Upload Kmake

deps/v8/third_party/zlib/BUILD.gn

@@ -0,0 +1,560 @@
+# Copyright 2013 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//build/config/compiler/compiler.gni")
+import("//build/config/dcheck_always_on.gni")
+
+declare_args() {
+  # Expose zlib's symbols, used by Node.js to provide zlib APIs for its native
+  # modules.
+  zlib_symbols_visible = false
+}
+
+if (build_with_chromium) {
+  import("//testing/test.gni")
+}
+
+if (current_cpu == "arm" || current_cpu == "arm64") {
+  import("//build/config/arm.gni")
+}
+
+config("zlib_config") {
+  include_dirs = [ "." ]
+
+  if (zlib_symbols_visible) {
+    defines = [ "ZLIB_DLL" ]
+  }
+}
+
+config("zlib_internal_config") {
+  defines = [ "ZLIB_IMPLEMENTATION" ]
+
+  if (!is_debug) {
+    # Build code using -O3, see: crbug.com/1084371.
+    configs = [ "//build/config/compiler:optimize_speed" ]
+  }
+  if (is_debug || dcheck_always_on || use_fuzzing_engine) {
+    # Enable zlib's asserts in debug and fuzzer builds.
+    defines += [ "ZLIB_DEBUG" ]
+  }
+
+  if (is_win && !is_clang) {
+    # V8 supports building with msvc, these silence some warnings that
+    # causes compilation to fail (https://crbug.com/1255096).
+    cflags = [
+      "/wd4244",
+      "/wd4100",
+      "/wd4702",
+      "/wd4127",
+    ]
+  }
+}
+
+source_set("zlib_common_headers") {
+  visibility = [ ":*" ]
+
+  sources = [
+    "chromeconf.h",
+    "deflate.h",
+    "inffast.h",
+    "inffixed.h",
+    "inflate.h",
+    "inftrees.h",
+    "zconf.h",
+    "zlib.h",
+    "zutil.h",
+  ]
+}
+
+use_arm_neon_optimizations = false
+if ((current_cpu == "arm" || current_cpu == "arm64") &&
+    !(is_win && !is_clang)) {
+  # TODO(richard.townsend@arm.com): Optimizations temporarily disabled for
+  # Windows on Arm MSVC builds, see http://crbug.com/v8/10012.
+  if (arm_use_neon) {
+    use_arm_neon_optimizations = true
+  }
+}
+
+use_x86_x64_optimizations =
+    (current_cpu == "x86" || current_cpu == "x64") && !is_ios
+
+config("zlib_adler32_simd_config") {
+  if (use_x86_x64_optimizations) {
+    defines = [ "ADLER32_SIMD_SSSE3" ]
+    if (is_win) {
+      defines += [ "X86_WINDOWS" ]
+    } else {
+      defines += [ "X86_NOT_WINDOWS" ]
+    }
+  }
+
+  if (use_arm_neon_optimizations) {
+    defines = [ "ADLER32_SIMD_NEON" ]
+  }
+}
+
+source_set("zlib_adler32_simd") {
+  visibility = [ ":*" ]
+
+  if (use_x86_x64_optimizations) {
+    sources = [
+      "adler32_simd.c",
+      "adler32_simd.h",
+    ]
+
+    if (!is_win || is_clang) {
+      cflags = [ "-mssse3" ]
+    }
+  }
+
+  if (use_arm_neon_optimizations) {
+    sources = [
+      "adler32_simd.c",
+      "adler32_simd.h",
+    ]
+  }
+
+  configs += [ ":zlib_internal_config" ]
+
+  public_configs = [ ":zlib_adler32_simd_config" ]
+
+  public_deps = [ ":zlib_common_headers" ]
+}
+
+if (use_arm_neon_optimizations) {
+  config("zlib_arm_crc32_config") {
+    defines = [ "CRC32_ARMV8_CRC32" ]
+    if (is_android) {
+      defines += [ "ARMV8_OS_ANDROID" ]
+    } else if (is_linux || is_chromeos) {
+      defines += [ "ARMV8_OS_LINUX" ]
+    } else if (is_mac) {
+      defines += [ "ARMV8_OS_MACOS" ]
+    } else if (is_ios) {
+      defines += [ "ARMV8_OS_IOS" ]
+    } else if (is_fuchsia) {
+      defines += [ "ARMV8_OS_FUCHSIA" ]
+    } else if (is_win) {
+      defines += [ "ARMV8_OS_WINDOWS" ]
+    } else {
+      assert(false, "Unsupported ARM OS")
+    }
+  }
+
+  source_set("zlib_arm_crc32") {
+    visibility = [ ":*" ]
+
+    include_dirs = [ "." ]
+
+    if (!is_win && !is_clang) {
+      assert(!use_thin_lto,
+             "ThinLTO fails mixing different module-level targets")
+      if (current_cpu == "arm64") {
+        cflags_c = [ "-march=armv8-a+aes+crc" ]
+      } else if (current_cpu == "arm") {
+        cflags_c = [ "-march=armv8-a+crc" ]
+      } else {
+        assert(false, "Unexpected cpu: $current_cpu")
+      }
+    }
+
+    sources = [
+      "crc32_simd.c",
+      "crc32_simd.h",
+    ]
+
+    configs += [ ":zlib_internal_config" ]
+
+    public_configs = [ ":zlib_arm_crc32_config" ]
+
+    public_deps = [ ":zlib_common_headers" ]
+  }
+}
+
+config("zlib_inflate_chunk_simd_config") {
+  if (use_x86_x64_optimizations) {
+    defines = [ "INFLATE_CHUNK_SIMD_SSE2" ]
+
+    if (current_cpu == "x64") {
+      defines += [ "INFLATE_CHUNK_READ_64LE" ]
+    }
+  }
+
+  if (use_arm_neon_optimizations) {
+    defines = [ "INFLATE_CHUNK_SIMD_NEON" ]
+
+    if (current_cpu == "arm64") {
+      defines += [ "INFLATE_CHUNK_READ_64LE" ]
+    }
+  }
+}
+
+source_set("zlib_inflate_chunk_simd") {
+  visibility = [ ":*" ]
+
+  if (use_x86_x64_optimizations || use_arm_neon_optimizations) {
+    include_dirs = [ "." ]
+
+    sources = [
+      "contrib/optimizations/chunkcopy.h",
+      "contrib/optimizations/inffast_chunk.c",
+      "contrib/optimizations/inffast_chunk.h",
+      "contrib/optimizations/inflate.c",
+    ]
+  }
+
+  configs += [ ":zlib_internal_config" ]
+
+  # Needed for MSVC, which is still supported by V8 and PDFium. zlib uses K&R C
+  # style function declarations, which triggers warning C4131.
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+  configs += [ ":zlib_warnings" ]
+
+  public_configs = [ ":zlib_inflate_chunk_simd_config" ]
+
+  public_deps = [ ":zlib_common_headers" ]
+}
+
+config("zlib_crc32_simd_config") {
+  if (use_x86_x64_optimizations) {
+    defines = [ "CRC32_SIMD_SSE42_PCLMUL" ]
+  }
+}
+
+source_set("zlib_crc32_simd") {
+  visibility = [ ":*" ]
+
+  if (use_x86_x64_optimizations) {
+    sources = [
+      "crc32_simd.c",
+      "crc32_simd.h",
+      "crc_folding.c",
+    ]
+
+    if (!is_win || is_clang) {
+      cflags = [
+        "-msse4.2",
+        "-mpclmul",
+      ]
+    }
+  }
+
+  configs += [ ":zlib_internal_config" ]
+
+  public_configs = [ ":zlib_crc32_simd_config" ]
+
+  public_deps = [ ":zlib_common_headers" ]
+}
+
+config("zlib_slide_hash_simd_config") {
+  if (use_x86_x64_optimizations) {
+    defines = [ "DEFLATE_SLIDE_HASH_SSE2" ]
+  }
+
+  if (use_arm_neon_optimizations) {
+    defines = [ "DEFLATE_SLIDE_HASH_NEON" ]
+  }
+}
+
+source_set("zlib_slide_hash_simd") {
+  visibility = [ ":*" ]
+
+  if (use_x86_x64_optimizations) {
+    sources = [ "slide_hash_simd.h" ]
+  }
+
+  if (use_arm_neon_optimizations) {
+    sources = [ "slide_hash_simd.h" ]
+  }
+
+  configs += [ ":zlib_internal_config" ]
+
+  public_configs = [ ":zlib_slide_hash_simd_config" ]
+
+  public_deps = [ ":zlib_common_headers" ]
+}
+
+config("zlib_warnings") {
+  if (is_clang) {
+    cflags = [
+      "-Wno-incompatible-pointer-types",
+      "-Wunused-variable",
+    ]
+  }
+}
+
+component("zlib") {
+  if (!is_win) {
+    # Don't stomp on "libzlib" on other platforms.
+    output_name = "chrome_zlib"
+  }
+
+  sources = [
+    "adler32.c",
+    "chromeconf.h",
+    "compress.c",
+    "contrib/optimizations/insert_string.h",
+    "cpu_features.c",
+    "cpu_features.h",
+    "crc32.c",
+    "crc32.h",
+    "deflate.c",
+    "deflate.h",
+    "gzclose.c",
+    "gzguts.h",
+    "gzlib.c",
+    "gzread.c",
+    "gzwrite.c",
+    "infback.c",
+    "inffast.c",
+    "inffast.h",
+    "inffixed.h",
+    "inflate.h",
+    "inftrees.c",
+    "inftrees.h",
+    "trees.c",
+    "trees.h",
+    "uncompr.c",
+    "zconf.h",
+    "zlib.h",
+    "zutil.c",
+    "zutil.h",
+  ]
+
+  defines = []
+  deps = []
+
+  if (!use_x86_x64_optimizations && !use_arm_neon_optimizations) {
+    # Apparently android_cronet bot builds with NEON disabled and
+    # we also should disable optimizations for iOS@x86 (a.k.a. simulator).
+    defines += [ "CPU_NO_SIMD" ]
+  }
+
+  if (use_x86_x64_optimizations || use_arm_neon_optimizations) {
+    deps += [
+      ":zlib_adler32_simd",
+      ":zlib_inflate_chunk_simd",
+      ":zlib_slide_hash_simd",
+    ]
+
+    if (use_x86_x64_optimizations) {
+      deps += [ ":zlib_crc32_simd" ]
+    } else if (use_arm_neon_optimizations) {
+      deps += [ ":zlib_arm_crc32" ]
+    }
+  } else {
+    sources += [ "inflate.c" ]
+  }
+
+  if (is_android) {
+    import("//build/config/android/config.gni")
+    if (defined(android_ndk_root) && android_ndk_root != "") {
+      deps += [ "//third_party/cpu_features:ndk_compat" ]
+    } else {
+      assert(false, "CPU detection requires the Android NDK")
+    }
+  }
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
+  if (zlib_symbols_visible) {
+    configs -= [ "//build/config/gcc:symbol_visibility_hidden" ]
+    configs += [ "//build/config/gcc:symbol_visibility_default" ]
+  }
+
+  public_configs = [ ":zlib_config" ]
+
+  configs += [
+    ":zlib_internal_config",
+
+    # Must be after no_chromium_code for warning flags to be ordered correctly.
+    ":zlib_warnings",
+  ]
+
+  allow_circular_includes_from = deps
+}
+
+config("minizip_warnings") {
+  visibility = [ ":*" ]
+
+  if (is_clang) {
+    cflags = [
+      # zlib uses `if ((a == b))` for some reason.
+      "-Wno-parentheses-equality",
+    ]
+  }
+}
+
+static_library("minizip") {
+  include_dirs = [
+    ".",
+    "//third_party/zlib",
+  ]
+
+  sources = [
+    "contrib/minizip/ioapi.c",
+    "contrib/minizip/ioapi.h",
+    "contrib/minizip/iowin32.c",
+    "contrib/minizip/iowin32.h",
+    "contrib/minizip/unzip.c",
+    "contrib/minizip/unzip.h",
+    "contrib/minizip/zip.c",
+    "contrib/minizip/zip.h",
+  ]
+
+  if (!is_win) {
+    sources -= [
+      "contrib/minizip/iowin32.c",
+      "contrib/minizip/iowin32.h",
+    ]
+  }
+
+  if (is_apple || is_android || is_nacl) {
+    # Mac, Android and the BSDs don't have fopen64, ftello64, or fseeko64. We
+    # use fopen, ftell, and fseek instead on these systems.
+    defines = [ "USE_FILE32API" ]
+  }
+
+  deps = [ ":zlib" ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+
+  public_configs = [ ":zlib_config" ]
+
+  configs += [
+    # Must be after no_chromium_code for warning flags to be ordered correctly.
+    ":minizip_warnings",
+  ]
+}
+
+executable("zlib_bench") {
+  include_dirs = [ "." ]
+
+  sources = [ "contrib/bench/zlib_bench.cc" ]
+  if (!is_debug) {
+    configs -= [ "//build/config/compiler:default_optimization" ]
+    configs += [ "//build/config/compiler:optimize_speed" ]
+  }
+
+  deps = [ ":zlib" ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+}
+
+executable("minigzip") {
+  include_dirs = [ "." ]
+
+  sources = [ "test/minigzip.c" ]
+  if (!is_debug) {
+    configs -= [ "//build/config/compiler:default_optimization" ]
+    configs += [ "//build/config/compiler:optimize_speed" ]
+  }
+
+  deps = [ ":zlib" ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+}
+
+executable("zpipe") {
+  include_dirs = [ "." ]
+
+  sources = [ "examples/zpipe.c" ]
+  if (!is_debug) {
+    configs -= [ "//build/config/compiler:default_optimization" ]
+    configs += [ "//build/config/compiler:optimize_speed" ]
+  }
+
+  deps = [ ":zlib" ]
+
+  configs -= [ "//build/config/compiler:chromium_code" ]
+  configs += [ "//build/config/compiler:no_chromium_code" ]
+}
+
+if (!is_win || target_os != "winuwp") {
+  executable("minizip_bin") {
+    include_dirs = [ "." ]
+
+    sources = [ "contrib/minizip/minizip.c" ]
+
+    if (is_clang) {
+      cflags = [ "-Wno-incompatible-pointer-types-discards-qualifiers" ]
+    }
+
+    if (!is_debug) {
+      configs -= [ "//build/config/compiler:default_optimization" ]
+      configs += [ "//build/config/compiler:optimize_speed" ]
+    }
+
+    deps = [ ":minizip" ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ "//build/config/compiler:no_chromium_code" ]
+  }
+
+  executable("miniunz_bin") {
+    include_dirs = [ "." ]
+
+    sources = [ "contrib/minizip/miniunz.c" ]
+
+    if (is_clang) {
+      cflags = [ "-Wno-incompatible-pointer-types-discards-qualifiers" ]
+    }
+
+    if (!is_debug) {
+      configs -= [ "//build/config/compiler:default_optimization" ]
+      configs += [ "//build/config/compiler:optimize_speed" ]
+    }
+
+    deps = [ ":minizip" ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ "//build/config/compiler:no_chromium_code" ]
+  }
+}
+
+if (build_with_chromium) {
+  test("zlib_unittests") {
+    testonly = true
+
+    sources = [
+      "contrib/tests/infcover.cc",
+      "contrib/tests/infcover.h",
+      "contrib/tests/run_all_unittests.cc",
+      "contrib/tests/utils_unittest.cc",
+      "google/compression_utils_unittest.cc",
+      "google/zip_reader_unittest.cc",
+      "google/zip_unittest.cc",
+    ]
+
+    data = [ "google/test/data/" ]
+
+    if (is_ios) {
+      bundle_deps = [ "google:zlib_pak_bundle_data" ]
+    }
+
+    deps = [
+      ":minizip",
+      ":zlib",
+      "google:compression_utils",
+      "google:zip",
+      "//base/test:test_support",
+      "//testing/gtest",
+    ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ "//build/config/compiler:no_chromium_code" ]
+
+    include_dirs = [
+      "//third_party/googletest/src/googletest/include/gtest",
+      ".",
+      "google",
+    ]
+  }
+}

deps/v8/third_party/zlib/CMakeLists.txt

@@ -0,0 +1,407 @@
+cmake_minimum_required(VERSION 2.4.4...3.15.0)
+set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
+
+project(zlib C)
+
+set(VERSION "1.3.0.1")
+
+set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
+set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
+set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers")
+set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages")
+set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")
+
+include(CheckTypeSize)
+include(CheckFunctionExists)
+include(CheckIncludeFile)
+include(CheckCSourceCompiles)
+enable_testing()
+
+check_include_file(sys/types.h HAVE_SYS_TYPES_H)
+check_include_file(stdint.h    HAVE_STDINT_H)
+check_include_file(stddef.h    HAVE_STDDEF_H)
+
+option(ENABLE_SIMD_OPTIMIZATIONS "Enable all SIMD optimizations" OFF)
+option(ENABLE_SIMD_AVX512 "Enable SIMD AXV512 optimizations" OFF)
+option(USE_ZLIB_RABIN_KARP_HASH "Enable bitstream compatibility with canonical zlib" OFF)
+option(ENABLE_INTEL_QAT_COMPRESSION "Enable Intel Quick Assist Technology use for compression" OFF)
+option(BUILD_UNITTESTS "Enable standalone unit tests build" OFF)
+option(BUILD_MINIZIP_BIN "Enable building minzip_bin tool" OFF)
+option(BUILD_ZPIPE "Enable building zpipe tool" OFF)
+option(BUILD_MINIGZIP "Enable building minigzip tool" OFF)
+
+if (USE_ZLIB_RABIN_KARP_HASH)
+   add_definitions(-DUSE_ZLIB_RABIN_KARP_ROLLING_HASH)
+endif()
+
+# TODO(cavalcantii): add support for other OSes (e.g. Android, Fuchsia, etc)
+# and architectures (e.g. RISCV).
+if (ENABLE_SIMD_OPTIMIZATIONS)
+  # Apparently some environments (e.g. CentOS) require to explicitly link
+  # with pthread and that is required by the CPU features detection code.
+  find_package (Threads REQUIRED)
+  SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
+  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
+
+  if (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
+    add_definitions(-DINFLATE_CHUNK_SIMD_SSE2)
+    add_definitions(-DADLER32_SIMD_SSSE3)
+    add_definitions(-DINFLATE_CHUNK_READ_64LE)
+    add_definitions(-DCRC32_SIMD_SSE42_PCLMUL)
+    if (ENABLE_SIMD_AVX512)
+      add_definitions(-DCRC32_SIMD_AVX512_PCLMUL)
+      add_compile_options(-mvpclmulqdq -msse2 -mavx512f -mpclmul)
+    else()
+      add_compile_options(-msse4.2 -mpclmul)
+    endif()
+    add_definitions(-DDEFLATE_SLIDE_HASH_SSE2)
+    # Required by CPU features detection code.
+    add_definitions(-DX86_NOT_WINDOWS)
+  endif()
+
+  if ((CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64") OR
+      (CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64"))
+    add_definitions(-DINFLATE_CHUNK_SIMD_NEON)
+    add_definitions(-DADLER32_SIMD_NEON)
+    add_definitions(-DINFLATE_CHUNK_READ_64LE)
+    add_definitions(-DCRC32_ARMV8_CRC32)
+    add_definitions(-DDEFLATE_SLIDE_HASH_NEON)
+    # Required by CPU features detection code.
+    if (APPLE)
+      add_definitions(-DARMV8_OS_MACOS)
+    endif()
+
+    if (UNIX AND NOT APPLE)
+      add_definitions(-DARMV8_OS_LINUX)
+    endif()
+
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=armv8-a+crc+crypto")
+  endif()
+
+  if (CMAKE_SYSTEM_PROCESSOR STREQUAL "riscv64")
+    add_definitions(-DRISCV_RVV)
+    add_definitions(-DDEFLATE_SLIDE_HASH_RVV)
+    add_definitions(-DADLER32_SIMD_RVV)
+
+    # TODO(cavalcantii): add remaining flags as we port optimizations to RVV.
+    # chunk_copy is required for READ64 and unconditional decode of literals.
+    add_definitions(-DINFLATE_CHUNK_GENERIC)
+    add_definitions(-DINFLATE_CHUNK_READ_64LE)
+
+    # Tested with clang-17, unaligned loads are required by read64 & chunk_copy.
+    # TODO(cavalcantii): replace internal clang flags for -munaligned-access
+    # when we have a newer compiler available.
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} --target=riscv64-unknown-linux-gnu -march=rv64gcv -Xclang -target-feature -Xclang +unaligned-scalar-mem")
+  endif()
+
+endif()
+
+#
+# Check to see if we have large file support
+#
+set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
+# We add these other definitions here because CheckTypeSize.cmake
+# in CMake 2.4.x does not automatically do so and we want
+# compatibility with CMake 2.4.x.
+if(HAVE_SYS_TYPES_H)
+    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
+endif()
+if(HAVE_STDINT_H)
+    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
+endif()
+if(HAVE_STDDEF_H)
+    list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
+endif()
+check_type_size(off64_t OFF64_T)
+if(HAVE_OFF64_T)
+   add_definitions(-D_LARGEFILE64_SOURCE=1)
+endif()
+set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
+
+#
+# Check for fseeko
+#
+check_function_exists(fseeko HAVE_FSEEKO)
+if(NOT HAVE_FSEEKO)
+    add_definitions(-DNO_FSEEKO)
+endif()
+
+#
+# Check for unistd.h
+#
+check_include_file(unistd.h Z_HAVE_UNISTD_H)
+
+if(MSVC)
+    set(CMAKE_DEBUG_POSTFIX "d")
+    add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
+    add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
+    include_directories(${CMAKE_CURRENT_SOURCE_DIR})
+endif()
+
+if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
+    # If we're doing an out of source build and the user has a zconf.h
+    # in their source tree...
+    if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h)
+        message(STATUS "Renaming")
+        message(STATUS "    ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h")
+        message(STATUS "to 'zconf.h.included' because this file is included with zlib")
+        message(STATUS "but CMake generates it automatically in the build directory.")
+        file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.included)
+  endif()
+endif()
+
+set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc)
+configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
+		${ZLIB_PC} @ONLY)
+configure_file(	${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
+		${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
+include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
+
+
+#============================================================================
+# zlib
+#============================================================================
+
+set(ZLIB_PUBLIC_HDRS
+    ${CMAKE_CURRENT_BINARY_DIR}/zconf.h
+    zlib.h
+)
+set(ZLIB_PRIVATE_HDRS
+    crc32.h
+    deflate.h
+    gzguts.h
+    inffast.h
+    inffixed.h
+    inflate.h
+    inftrees.h
+    trees.h
+    zutil.h
+)
+set(ZLIB_SRCS
+    adler32.c
+    compress.c
+    crc32.c
+    deflate.c
+    gzclose.c
+    gzlib.c
+    gzread.c
+    gzwrite.c
+    inflate.c
+    infback.c
+    inftrees.c
+    inffast.c
+    trees.c
+    uncompr.c
+    zutil.c
+)
+
+
+#============================================================================
+# Update list of source files if optimizations were enabled
+#============================================================================
+if (ENABLE_SIMD_OPTIMIZATIONS)
+  if (CMAKE_SYSTEM_PROCESSOR STREQUAL "riscv64")
+    message("RISCVV: Add optimizations.")
+    list(REMOVE_ITEM ZLIB_SRCS inflate.c)
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/adler32_simd.h)
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/optimizations/chunkcopy.h)
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/cpu_features.h)
+
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/adler32_simd.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/optimizations/inffast_chunk.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/optimizations/inflate.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/cpu_features.c)
+  else()
+    list(REMOVE_ITEM ZLIB_SRCS inflate.c)
+
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/adler32_simd.h)
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/optimizations/chunkcopy.h)
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/optimizations/inffast_chunk.h)
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/cpu_features.h)
+    list(APPEND ZLIB_PRIVATE_HDRS ${CMAKE_CURRENT_SOURCE_DIR}/crc32_simd.h)
+
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/adler32_simd.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/optimizations/inffast_chunk.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/optimizations/inflate.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/cpu_features.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/crc32_simd.c)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/crc_folding.c)
+  endif()
+endif()
+
+if (ENABLE_INTEL_QAT_COMPRESSION)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/deflate_qat.cpp)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp/io_buffers.cpp)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp/memory.cpp)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp/qat_buffer_list.cpp)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp/qat.cpp)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp/qat_instance.cpp)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp/session.cpp)
+    list(APPEND ZLIB_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp/qat_task.cpp)
+
+    # TODO(gustavoa): Find a way to include the qatzpp headers without having the
+    # presubmit check throw errors.
+    include_directories(${CMAKE_CURRENT_SOURCE_DIR}/contrib/qat/qatzpp)
+    add_compile_definitions(QAT_COMPRESSION_ENABLED)
+endif()
+
+# parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
+file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
+string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
+    "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
+
+if(MINGW)
+    # This gets us DLL resource information when compiling on MinGW.
+    if(NOT CMAKE_RC_COMPILER)
+        set(CMAKE_RC_COMPILER windres.exe)
+    endif()
+
+    add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
+                       COMMAND ${CMAKE_RC_COMPILER}
+                            -D GCC_WINDRES
+                            -I ${CMAKE_CURRENT_SOURCE_DIR}
+                            -I ${CMAKE_CURRENT_BINARY_DIR}
+                            -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
+                            -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
+    set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
+endif(MINGW)
+
+add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
+set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
+set_target_properties(zlib PROPERTIES SOVERSION 1)
+
+if (ENABLE_INTEL_QAT_COMPRESSION)
+    target_include_directories(zlib PUBLIC ${QATZPP_INCLUDE_DIRS})
+    target_link_libraries(zlib ${QATZPP_LIBRARY})
+    target_link_libraries(zlib qat)
+    target_include_directories(zlibstatic PUBLIC ${QATZPP_INCLUDE_DIRS})
+    target_link_libraries(zlibstatic ${QATZPP_LIBRARY})
+    target_link_libraries(zlibstatic qat)
+endif()
+
+if(NOT CYGWIN)
+    # This property causes shared libraries on Linux to have the full version
+    # encoded into their final filename.  We disable this on Cygwin because
+    # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
+    # seems to be the default.
+    #
+    # This has no effect with MSVC, on that platform the version info for
+    # the DLL comes from the resource file win32/zlib1.rc
+    set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
+endif()
+
+if(UNIX)
+    # On unix-like platforms the library is almost always called libz
+   set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z)
+   if(NOT APPLE)
+     set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
+   endif()
+elseif(BUILD_SHARED_LIBS AND WIN32)
+    # Creates zlib1.dll when building shared library version
+    set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
+endif()
+
+if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
+    install(TARGETS zlib zlibstatic
+        RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
+        ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
+        LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
+endif()
+if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
+    install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
+endif()
+if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
+    install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3")
+endif()
+if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
+    install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}")
+endif()
+
+#============================================================================
+# Benchmarker
+#============================================================================
+enable_language(CXX)
+set(CMAKE_CXX_STANDARD 14) # workaround for older compilers (e.g. g++ 5.4).
+add_executable(zlib_bench contrib/bench/zlib_bench.cc)
+target_link_libraries(zlib_bench zlib)
+
+#============================================================================
+# Unit Tests
+#============================================================================
+if (BUILD_UNITTESTS)
+    include (ExternalProject)
+    set_directory_properties(PROPERTIES EP_PREFIX ${CMAKE_BINARY_DIR}/third_party)
+    ExternalProject_add(
+        googletest
+        GIT_REPOSITORY https://github.com/google/googletest.git
+        GIT_TAG d1467f5813f4d363cfd11aba99c4e9fe47a85e99
+        UPDATE_COMMAND ""
+        INSTALL_COMMAND ""
+        LOG_DOWNLOAD ON
+        LOG_CONFIGURE ON
+        LOG_BUILD ON
+    )
+
+    # gtest includedir
+    ExternalProject_Get_Property(googletest source_dir)
+    set(GTEST_INCLUDE_DIRS
+        ${source_dir}/googletest/include
+        ${source_dir}/googletest/include/gtest
+    )
+
+    # gtest library
+    ExternalProject_Get_Property(googletest binary_dir)
+    set(GTEST_LIBRARY_PATH ${binary_dir}/lib/${CMAKE_FIND_LIBRARY_PREFIXES}gtest.a)
+    set(GTEST_LIBRARY gtest)
+    add_library(${GTEST_LIBRARY} UNKNOWN IMPORTED)
+    set_property(TARGET ${GTEST_LIBRARY} PROPERTY IMPORTED_LOCATION ${GTEST_LIBRARY_PATH})
+    add_dependencies(${GTEST_LIBRARY} googletest)
+
+    set(UTEST_SRC
+        ${CMAKE_CURRENT_SOURCE_DIR}/contrib/tests/infcover.cc
+        ${CMAKE_CURRENT_SOURCE_DIR}/contrib/tests/infcover.h
+        ${CMAKE_CURRENT_SOURCE_DIR}/contrib/tests/utils_unittest.cc
+        ${CMAKE_CURRENT_SOURCE_DIR}/contrib/tests/standalone_test_runner.cc
+        ${CMAKE_CURRENT_SOURCE_DIR}/google/compression_utils_portable.cc
+    )
+
+    add_compile_definitions(CMAKE_STANDALONE_UNITTESTS)
+
+    add_executable(zlib_unittests ${UTEST_SRC})
+    target_include_directories(zlib_unittests PUBLIC ${GTEST_INCLUDE_DIRS})
+    target_include_directories(zlib_unittests PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/google)
+
+    target_link_libraries(zlib_unittests ${GTEST_LIBRARY})
+    target_link_libraries(zlib_unittests zlib)
+    # Needed by gtest
+    target_link_libraries(zlib_unittests pthread)
+endif()
+
+#============================================================================
+# Minizip tool
+#============================================================================
+# TODO(cavalcantii): get it working on Windows.
+if (BUILD_MINIZIP_BIN)
+  add_executable(minizip_bin contrib/minizip/minizip.c contrib/minizip/ioapi.c
+    contrib/minizip/ioapi.h contrib/minizip/unzip.c
+    contrib/minizip/unzip.h contrib/minizip/zip.c contrib/minizip/zip.h
+    contrib/minizip/ints.h contrib/minizip/skipset.h
+    )
+  target_link_libraries(minizip_bin zlib)
+endif()
+
+#============================================================================
+# zpipe tool
+#============================================================================
+if (BUILD_ZPIPE)
+  add_executable(zpipe examples/zpipe.c)
+  target_link_libraries(zpipe zlib)
+endif()
+#============================================================================
+# MiniGzip tool
+#============================================================================
+if (BUILD_MINIGZIP)
+  add_executable(minigzip_bin test/minigzip.c)
+  target_link_libraries(minigzip_bin zlib)
+endif()

deps/v8/third_party/zlib/DIR_METADATA

@@ -0,0 +1,6 @@
+monorail: {
+  component: "Internals"
+}
+buganizer_public: {
+  component_id: 1456292
+}

deps/v8/third_party/zlib/LICENSE

@@ -0,0 +1,19 @@
+version 1.2.12, March 27th, 2022
+
+Copyright (C) 1995-2022 Jean-loup Gailly and Mark Adler
+
+This software is provided 'as-is', without any express or implied
+warranty.  In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.

deps/v8/third_party/zlib/OWNERS

@@ -0,0 +1,4 @@
+agl@chromium.org
+cavalcantii@chromium.org
+cblume@chromium.org
+scroggo@google.com

deps/v8/third_party/zlib/README.chromium

@@ -0,0 +1,34 @@
+Name: zlib
+Short Name: zlib
+URL: http://zlib.net/
+Version: 1.3.0.1
+Revision: ac8f12c97d1afd9bafa9c710f827d40a407d3266
+CPEPrefix: cpe:/a:zlib:zlib:1.3.0.1
+Security Critical: yes
+Shipped: yes
+License: Zlib
+License File: LICENSE
+License Android Compatible: yes
+
+Description:
+"A massively spiffy yet delicately unobtrusive compression library."
+
+zlib is a free, general-purpose, legally unencumbered lossless data-compression
+library. zlib implements the "deflate" compression algorithm described by RFC
+1951, which combines the LZ77 (Lempel-Ziv) algorithm with Huffman coding. zlib
+also implements the zlib (RFC 1950) and gzip (RFC 1952) wrapper formats.
+
+Local Modifications:
+ - Only source code from the zlib distribution used to build the zlib and
+   minizip libraries are present. Many other files have been omitted. Only *.c
+   and *.h files from the upstream root directory and contrib/minizip were
+   imported.
+ - The contents of the google directory are original Chromium-specific
+   additions.
+ - Added chromeconf.h
+ - Plus the changes in 'patches' folder.
+ - Code in contrib/ other than contrib/minizip was added to match zlib's
+   contributor layout.
+ - In sync with 1.2.13 official release
+ - ZIP reader modified to allow for progress callbacks during extraction.
+ - ZIP reader modified to add detection of AES encrypted content.

deps/v8/third_party/zlib/adler32.c

@@ -0,0 +1,197 @@
+/* adler32.c -- compute the Adler-32 checksum of a data stream
+ * Copyright (C) 1995-2011, 2016 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#include "zutil.h"
+
+#define BASE 65521U     /* largest prime smaller than 65536 */
+#define NMAX 5552
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+
+#define DO1(buf,i)  {adler += (buf)[i]; sum2 += adler;}
+#define DO2(buf,i)  DO1(buf,i); DO1(buf,i+1);
+#define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
+#define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
+#define DO16(buf)   DO8(buf,0); DO8(buf,8);
+
+/* use NO_DIVIDE if your processor does not do division in hardware --
+   try it both ways to see which is faster */
+#ifdef NO_DIVIDE
+/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
+   (thank you to John Reiser for pointing this out) */
+#  define CHOP(a) \
+    do { \
+        unsigned long tmp = a >> 16; \
+        a &= 0xffffUL; \
+        a += (tmp << 4) - tmp; \
+    } while (0)
+#  define MOD28(a) \
+    do { \
+        CHOP(a); \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
+#  define MOD(a) \
+    do { \
+        CHOP(a); \
+        MOD28(a); \
+    } while (0)
+#  define MOD63(a) \
+    do { /* this assumes a is not negative */ \
+        z_off64_t tmp = a >> 32; \
+        a &= 0xffffffffL; \
+        a += (tmp << 8) - (tmp << 5) + tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
+        tmp = a >> 16; \
+        a &= 0xffffL; \
+        a += (tmp << 4) - tmp; \
+        if (a >= BASE) a -= BASE; \
+    } while (0)
+#else
+#  define MOD(a) a %= BASE
+#  define MOD28(a) a %= BASE
+#  define MOD63(a) a %= BASE
+#endif
+
+#include "cpu_features.h"
+#if defined(ADLER32_SIMD_SSSE3) || defined(ADLER32_SIMD_NEON) || defined(ADLER32_SIMD_RVV)
+#include "adler32_simd.h"
+#endif
+
+/* ========================================================================= */
+uLong ZEXPORT adler32_z(uLong adler, const Bytef *buf, z_size_t len) {
+    unsigned long sum2;
+    unsigned n;
+    /* TODO(cavalcantii): verify if this lengths are optimal for current CPUs. */
+#if defined(ADLER32_SIMD_SSSE3) || defined(ADLER32_SIMD_NEON) \
+    || defined(ADLER32_SIMD_RVV)
+#if defined(ADLER32_SIMD_SSSE3)
+    if (buf != Z_NULL && len >= 64 && x86_cpu_enable_ssse3)
+#elif defined(ADLER32_SIMD_NEON)
+    if (buf != Z_NULL && len >= 64)
+#elif defined(ADLER32_SIMD_RVV)
+    if (buf != Z_NULL && len >= 32 && riscv_cpu_enable_rvv)
+#endif
+        return adler32_simd_(adler, buf, len);
+#endif
+
+    /* split Adler-32 into component sums */
+    sum2 = (adler >> 16) & 0xffff;
+    adler &= 0xffff;
+
+    /* in case user likes doing a byte at a time, keep it fast */
+    if (len == 1) {
+        adler += buf[0];
+        if (adler >= BASE)
+            adler -= BASE;
+        sum2 += adler;
+        if (sum2 >= BASE)
+            sum2 -= BASE;
+        return adler | (sum2 << 16);
+    }
+
+#if defined(ADLER32_SIMD_SSSE3) || defined(ADLER32_SIMD_NEON) \
+    || defined(RISCV_RVV)
+    /*
+     * Use SIMD to compute the adler32. Since this function can be
+     * freely used, check CPU features here. zlib convention is to
+     * call adler32(0, NULL, 0), before making calls to adler32().
+     * So this is a good early (and infrequent) place to cache CPU
+     * features for those later, more interesting adler32() calls.
+     */
+    if (buf == Z_NULL) {
+        if (!len) /* Assume user is calling adler32(0, NULL, 0); */
+            cpu_check_features();
+        return 1L;
+    }
+#else
+    /* initial Adler-32 value (deferred check for len == 1 speed) */
+    if (buf == Z_NULL)
+        return 1L;
+#endif
+
+    /* in case short lengths are provided, keep it somewhat fast */
+    if (len < 16) {
+        while (len--) {
+            adler += *buf++;
+            sum2 += adler;
+        }
+        if (adler >= BASE)
+            adler -= BASE;
+        MOD28(sum2);            /* only added so many BASE's */
+        return adler | (sum2 << 16);
+    }
+
+    /* do length NMAX blocks -- requires just one modulo operation */
+    while (len >= NMAX) {
+        len -= NMAX;
+        n = NMAX / 16;          /* NMAX is divisible by 16 */
+        do {
+            DO16(buf);          /* 16 sums unrolled */
+            buf += 16;
+        } while (--n);
+        MOD(adler);
+        MOD(sum2);
+    }
+
+    /* do remaining bytes (less than NMAX, still just one modulo) */
+    if (len) {                  /* avoid modulos if none remaining */
+        while (len >= 16) {
+            len -= 16;
+            DO16(buf);
+            buf += 16;
+        }
+        while (len--) {
+            adler += *buf++;
+            sum2 += adler;
+        }
+        MOD(adler);
+        MOD(sum2);
+    }
+
+    /* return recombined sums */
+    return adler | (sum2 << 16);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len) {
+    return adler32_z(adler, buf, len);
+}
+
+/* ========================================================================= */
+local uLong adler32_combine_(uLong adler1, uLong adler2, z_off64_t len2) {
+    unsigned long sum1;
+    unsigned long sum2;
+    unsigned rem;
+
+    /* for negative len, return invalid adler32 as a clue for debugging */
+    if (len2 < 0)
+        return 0xffffffffUL;
+
+    /* the derivation of this formula is left as an exercise for the reader */
+    MOD63(len2);                /* assumes len2 >= 0 */
+    rem = (unsigned)len2;
+    sum1 = adler1 & 0xffff;
+    sum2 = rem * sum1;
+    MOD(sum2);
+    sum1 += (adler2 & 0xffff) + BASE - 1;
+    sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
+    if (sum1 >= BASE) sum1 -= BASE;
+    if (sum1 >= BASE) sum1 -= BASE;
+    if (sum2 >= ((unsigned long)BASE << 1)) sum2 -= ((unsigned long)BASE << 1);
+    if (sum2 >= BASE) sum2 -= BASE;
+    return sum1 | (sum2 << 16);
+}
+
+/* ========================================================================= */
+uLong ZEXPORT adler32_combine(uLong adler1, uLong adler2, z_off_t len2) {
+    return adler32_combine_(adler1, adler2, len2);
+}
+
+uLong ZEXPORT adler32_combine64(uLong adler1, uLong adler2, z_off64_t len2) {
+    return adler32_combine_(adler1, adler2, len2);
+}

deps/v8/third_party/zlib/adler32_simd.c

@@ -0,0 +1,456 @@
+/* adler32_simd.c
+ *
+ * Copyright 2017 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ *
+ * Per http://en.wikipedia.org/wiki/Adler-32 the adler32 A value (aka s1) is
+ * the sum of N input data bytes D1 ... DN,
+ *
+ *   A = A0 + D1 + D2 + ... + DN
+ *
+ * where A0 is the initial value.
+ *
+ * SSE2 _mm_sad_epu8() can be used for byte sums (see http://bit.ly/2wpUOeD,
+ * for example) and accumulating the byte sums can use SSE shuffle-adds (see
+ * the "Integer" section of http://bit.ly/2erPT8t for details). Arm NEON has
+ * similar instructions.
+ *
+ * The adler32 B value (aka s2) sums the A values from each step:
+ *
+ *   B0 + (A0 + D1) + (A0 + D1 + D2) + ... + (A0 + D1 + D2 + ... + DN) or
+ *
+ *       B0 + N.A0 + N.D1 + (N-1).D2 + (N-2).D3 + ... + (N-(N-1)).DN
+ *
+ * B0 being the initial value. For 32 bytes (ideal for garden-variety SIMD):
+ *
+ *   B = B0 + 32.A0 + [D1 D2 D3 ... D32] x [32 31 30 ... 1].
+ *
+ * Adjacent blocks of 32 input bytes can be iterated with the expressions to
+ * compute the adler32 s1 s2 of M >> 32 input bytes [1].
+ *
+ * As M grows, the s1 s2 sums grow. If left unchecked, they would eventually
+ * overflow the precision of their integer representation (bad). However, s1
+ * and s2 also need to be computed modulo the adler BASE value (reduced). If
+ * at most NMAX bytes are processed before a reduce, s1 s2 _cannot_ overflow
+ * a uint32_t type (the NMAX constraint) [2].
+ *
+ * [1] the iterative equations for s2 contain constant factors; these can be
+ * hoisted from the n-blocks do loop of the SIMD code.
+ *
+ * [2] zlib adler32_z() uses this fact to implement NMAX-block-based updates
+ * of the adler s1 s2 of uint32_t type (see adler32.c).
+ */
+
+#include "adler32_simd.h"
+
+/* Definitions from adler32.c: largest prime smaller than 65536 */
+#define BASE 65521U
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+#define NMAX 5552
+
+#if defined(ADLER32_SIMD_SSSE3)
+
+#include <tmmintrin.h>
+
+uint32_t ZLIB_INTERNAL adler32_simd_(  /* SSSE3 */
+    uint32_t adler,
+    const unsigned char *buf,
+    z_size_t len)
+{
+    /*
+     * Split Adler-32 into component sums.
+     */
+    uint32_t s1 = adler & 0xffff;
+    uint32_t s2 = adler >> 16;
+
+    /*
+     * Process the data in blocks.
+     */
+    const unsigned BLOCK_SIZE = 1 << 5;
+
+    z_size_t blocks = len / BLOCK_SIZE;
+    len -= blocks * BLOCK_SIZE;
+
+    while (blocks)
+    {
+        unsigned n = NMAX / BLOCK_SIZE;  /* The NMAX constraint. */
+        if (n > blocks)
+            n = (unsigned) blocks;
+        blocks -= n;
+
+        const __m128i tap1 =
+            _mm_setr_epi8(32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17);
+        const __m128i tap2 =
+            _mm_setr_epi8(16,15,14,13,12,11,10, 9, 8, 7, 6, 5, 4, 3, 2, 1);
+        const __m128i zero =
+            _mm_setr_epi8( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+        const __m128i ones =
+            _mm_set_epi16( 1, 1, 1, 1, 1, 1, 1, 1);
+
+        /*
+         * Process n blocks of data. At most NMAX data bytes can be
+         * processed before s2 must be reduced modulo BASE.
+         */
+        __m128i v_ps = _mm_set_epi32(0, 0, 0, s1 * n);
+        __m128i v_s2 = _mm_set_epi32(0, 0, 0, s2);
+        __m128i v_s1 = _mm_set_epi32(0, 0, 0, 0);
+
+        do {
+            /*
+             * Load 32 input bytes.
+             */
+            const __m128i bytes1 = _mm_loadu_si128((__m128i*)(buf));
+            const __m128i bytes2 = _mm_loadu_si128((__m128i*)(buf + 16));
+
+            /*
+             * Add previous block byte sum to v_ps.
+             */
+            v_ps = _mm_add_epi32(v_ps, v_s1);
+
+            /*
+             * Horizontally add the bytes for s1, multiply-adds the
+             * bytes by [ 32, 31, 30, ... ] for s2.
+             */
+            v_s1 = _mm_add_epi32(v_s1, _mm_sad_epu8(bytes1, zero));
+            const __m128i mad1 = _mm_maddubs_epi16(bytes1, tap1);
+            v_s2 = _mm_add_epi32(v_s2, _mm_madd_epi16(mad1, ones));
+
+            v_s1 = _mm_add_epi32(v_s1, _mm_sad_epu8(bytes2, zero));
+            const __m128i mad2 = _mm_maddubs_epi16(bytes2, tap2);
+            v_s2 = _mm_add_epi32(v_s2, _mm_madd_epi16(mad2, ones));
+
+            buf += BLOCK_SIZE;
+
+        } while (--n);
+
+        v_s2 = _mm_add_epi32(v_s2, _mm_slli_epi32(v_ps, 5));
+
+        /*
+         * Sum epi32 ints v_s1(s2) and accumulate in s1(s2).
+         */
+
+#define S23O1 _MM_SHUFFLE(2,3,0,1)  /* A B C D -> B A D C */
+#define S1O32 _MM_SHUFFLE(1,0,3,2)  /* A B C D -> C D A B */
+
+        v_s1 = _mm_add_epi32(v_s1, _mm_shuffle_epi32(v_s1, S23O1));
+        v_s1 = _mm_add_epi32(v_s1, _mm_shuffle_epi32(v_s1, S1O32));
+
+        s1 += _mm_cvtsi128_si32(v_s1);
+
+        v_s2 = _mm_add_epi32(v_s2, _mm_shuffle_epi32(v_s2, S23O1));
+        v_s2 = _mm_add_epi32(v_s2, _mm_shuffle_epi32(v_s2, S1O32));
+
+        s2 = _mm_cvtsi128_si32(v_s2);
+
+#undef S23O1
+#undef S1O32
+
+        /*
+         * Reduce.
+         */
+        s1 %= BASE;
+        s2 %= BASE;
+    }
+
+    /*
+     * Handle leftover data.
+     */
+    if (len) {
+        if (len >= 16) {
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            len -= 16;
+        }
+
+        while (len--) {
+            s2 += (s1 += *buf++);
+        }
+
+        if (s1 >= BASE)
+            s1 -= BASE;
+        s2 %= BASE;
+    }
+
+    /*
+     * Return the recombined sums.
+     */
+    return s1 | (s2 << 16);
+}
+
+#elif defined(ADLER32_SIMD_NEON)
+
+#include <arm_neon.h>
+
+uint32_t ZLIB_INTERNAL adler32_simd_(  /* NEON */
+    uint32_t adler,
+    const unsigned char *buf,
+    z_size_t len)
+{
+    /*
+     * Split Adler-32 into component sums.
+     */
+    uint32_t s1 = adler & 0xffff;
+    uint32_t s2 = adler >> 16;
+
+    /*
+     * Serially compute s1 & s2, until the data is 16-byte aligned.
+     */
+    if ((uintptr_t)buf & 15) {
+        while ((uintptr_t)buf & 15) {
+            s2 += (s1 += *buf++);
+            --len;
+        }
+
+        if (s1 >= BASE)
+            s1 -= BASE;
+        s2 %= BASE;
+    }
+
+    /*
+     * Process the data in blocks.
+     */
+    const unsigned BLOCK_SIZE = 1 << 5;
+
+    z_size_t blocks = len / BLOCK_SIZE;
+    len -= blocks * BLOCK_SIZE;
+
+    while (blocks)
+    {
+        unsigned n = NMAX / BLOCK_SIZE;  /* The NMAX constraint. */
+        if (n > blocks)
+            n = (unsigned) blocks;
+        blocks -= n;
+
+        /*
+         * Process n blocks of data. At most NMAX data bytes can be
+         * processed before s2 must be reduced modulo BASE.
+         */
+        uint32x4_t v_s2 = (uint32x4_t) { 0, 0, 0, s1 * n };
+        uint32x4_t v_s1 = (uint32x4_t) { 0, 0, 0, 0 };
+
+        uint16x8_t v_column_sum_1 = vdupq_n_u16(0);
+        uint16x8_t v_column_sum_2 = vdupq_n_u16(0);
+        uint16x8_t v_column_sum_3 = vdupq_n_u16(0);
+        uint16x8_t v_column_sum_4 = vdupq_n_u16(0);
+
+        do {
+            /*
+             * Load 32 input bytes.
+             */
+            const uint8x16_t bytes1 = vld1q_u8((uint8_t*)(buf));
+            const uint8x16_t bytes2 = vld1q_u8((uint8_t*)(buf + 16));
+
+            /*
+             * Add previous block byte sum to v_s2.
+             */
+            v_s2 = vaddq_u32(v_s2, v_s1);
+
+            /*
+             * Horizontally add the bytes for s1.
+             */
+            v_s1 = vpadalq_u16(v_s1, vpadalq_u8(vpaddlq_u8(bytes1), bytes2));
+
+            /*
+             * Vertically add the bytes for s2.
+             */
+            v_column_sum_1 = vaddw_u8(v_column_sum_1, vget_low_u8 (bytes1));
+            v_column_sum_2 = vaddw_u8(v_column_sum_2, vget_high_u8(bytes1));
+            v_column_sum_3 = vaddw_u8(v_column_sum_3, vget_low_u8 (bytes2));
+            v_column_sum_4 = vaddw_u8(v_column_sum_4, vget_high_u8(bytes2));
+
+            buf += BLOCK_SIZE;
+
+        } while (--n);
+
+        v_s2 = vshlq_n_u32(v_s2, 5);
+
+        /*
+         * Multiply-add bytes by [ 32, 31, 30, ... ] for s2.
+         */
+        v_s2 = vmlal_u16(v_s2, vget_low_u16 (v_column_sum_1),
+            (uint16x4_t) { 32, 31, 30, 29 });
+        v_s2 = vmlal_u16(v_s2, vget_high_u16(v_column_sum_1),
+            (uint16x4_t) { 28, 27, 26, 25 });
+        v_s2 = vmlal_u16(v_s2, vget_low_u16 (v_column_sum_2),
+            (uint16x4_t) { 24, 23, 22, 21 });
+        v_s2 = vmlal_u16(v_s2, vget_high_u16(v_column_sum_2),
+            (uint16x4_t) { 20, 19, 18, 17 });
+        v_s2 = vmlal_u16(v_s2, vget_low_u16 (v_column_sum_3),
+            (uint16x4_t) { 16, 15, 14, 13 });
+        v_s2 = vmlal_u16(v_s2, vget_high_u16(v_column_sum_3),
+            (uint16x4_t) { 12, 11, 10,  9 });
+        v_s2 = vmlal_u16(v_s2, vget_low_u16 (v_column_sum_4),
+            (uint16x4_t) {  8,  7,  6,  5 });
+        v_s2 = vmlal_u16(v_s2, vget_high_u16(v_column_sum_4),
+            (uint16x4_t) {  4,  3,  2,  1 });
+
+        /*
+         * Sum epi32 ints v_s1(s2) and accumulate in s1(s2).
+         */
+        uint32x2_t sum1 = vpadd_u32(vget_low_u32(v_s1), vget_high_u32(v_s1));
+        uint32x2_t sum2 = vpadd_u32(vget_low_u32(v_s2), vget_high_u32(v_s2));
+        uint32x2_t s1s2 = vpadd_u32(sum1, sum2);
+
+        s1 += vget_lane_u32(s1s2, 0);
+        s2 += vget_lane_u32(s1s2, 1);
+
+        /*
+         * Reduce.
+         */
+        s1 %= BASE;
+        s2 %= BASE;
+    }
+
+    /*
+     * Handle leftover data.
+     */
+    if (len) {
+        if (len >= 16) {
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+            s2 += (s1 += *buf++);
+
+            len -= 16;
+        }
+
+        while (len--) {
+            s2 += (s1 += *buf++);
+        }
+
+        if (s1 >= BASE)
+            s1 -= BASE;
+        s2 %= BASE;
+    }
+
+    /*
+     * Return the recombined sums.
+     */
+    return s1 | (s2 << 16);
+}
+
+#elif defined(ADLER32_SIMD_RVV)
+#include <riscv_vector.h>
+
+/*
+ * Patch by Simon Hosie, from:
+ *    https://github.com/cloudflare/zlib/pull/55
+ */
+
+uint32_t ZLIB_INTERNAL adler32_simd_(  /* RVV */
+    uint32_t adler,
+    const unsigned char *buf,
+    unsigned long len)
+{
+  size_t vl = __riscv_vsetvlmax_e8m2();
+  const vuint16m4_t zero16 = __riscv_vmv_v_x_u16m4(0, vl);
+  vuint16m4_t a_sum = zero16;
+  vuint32m8_t b_sum = __riscv_vmv_v_x_u32m8(0, vl);
+
+  /* Deal with the part which is not a multiple of vl first; because it's
+   * easier to zero-stuff the beginning of the checksum than it is to tweak the
+   * multipliers and sums for odd lengths afterwards.
+   */
+  size_t head = len & (vl - 1);
+  if (head > 0) {
+    vuint8m2_t zero8 = __riscv_vmv_v_x_u8m2(0, vl);
+    vuint8m2_t in = __riscv_vle8_v_u8m2(buf, vl);
+    in = __riscv_vslideup(zero8, in, vl - head, vl);
+    vuint16m4_t in16 = __riscv_vwcvtu_x(in, vl);
+    a_sum = in16;
+    buf += head;
+  }
+
+  /* We have a 32-bit accumulator, and in each iteration we add 22-times a
+   * 16-bit value, plus another 16-bit value.  We periodically subtract up to
+   * 65535 times BASE to avoid overflow.  b_overflow estimates how often we
+   * need to do this subtraction.
+   */
+  const int b_overflow = BASE / 23;
+  int fixup = b_overflow;
+  ssize_t iters = (len - head) / vl;
+  while (iters > 0) {
+    const vuint16m4_t a_overflow = __riscv_vrsub(a_sum, BASE, vl);
+    int batch = iters < 22 ? iters : 22;
+    iters -= batch;
+    b_sum = __riscv_vwmaccu(b_sum, batch, a_sum, vl);
+    vuint16m4_t a_batch = zero16, b_batch = zero16;
+
+    /* Do a short batch, where neither a_sum nor b_sum can overflow a 16-bit
+     * register.  Then add them back into the main accumulators.
+     */
+    while (batch-- > 0) {
+      vuint8m2_t in8 = __riscv_vle8_v_u8m2(buf, vl);
+      buf += vl;
+      b_batch = __riscv_vadd(b_batch, a_batch, vl);
+      a_batch = __riscv_vwaddu_wv(a_batch, in8, vl);
+    }
+    vbool4_t ov = __riscv_vmsgeu(a_batch, a_overflow, vl);
+    a_sum = __riscv_vadd(a_sum, a_batch, vl);
+    a_sum = __riscv_vadd_mu(ov, a_sum, a_sum, 65536 - BASE, vl);
+    b_sum = __riscv_vwaddu_wv(b_sum, b_batch, vl);
+    if (--fixup <= 0) {
+      b_sum = __riscv_vnmsac(b_sum, BASE, __riscv_vsrl(b_sum, 16, vl), vl);
+      fixup = b_overflow;
+    }
+  }
+  /* Adjust per-lane sums to have appropriate offsets from the end of the
+   * buffer.
+   */
+  const vuint16m4_t off = __riscv_vrsub(__riscv_vid_v_u16m4(vl), vl, vl);
+  vuint16m4_t bsum16 = __riscv_vncvt_x(__riscv_vremu(b_sum, BASE, vl), vl);
+  b_sum = __riscv_vadd(__riscv_vwmulu(a_sum, off, vl),
+                       __riscv_vwmulu(bsum16, vl, vl), vl);
+  bsum16 = __riscv_vncvt_x(__riscv_vremu(b_sum, BASE, vl), vl);
+
+  /* And finally, do a horizontal sum across the registers for the final
+   * result.
+   */
+  uint32_t a = adler & 0xffff;
+  uint32_t b = ((adler >> 16) + a * (len % BASE)) % BASE;
+  vuint32m1_t sca = __riscv_vmv_v_x_u32m1(a, 1);
+  vuint32m1_t scb = __riscv_vmv_v_x_u32m1(b, 1);
+  sca = __riscv_vwredsumu(a_sum, sca, vl);
+  scb = __riscv_vwredsumu(bsum16, scb, vl);
+  a = __riscv_vmv_x(sca);
+  b = __riscv_vmv_x(scb);
+  a %= BASE;
+  b %= BASE;
+  return (b << 16) | a;
+}
+
+#endif  /* ADLER32_SIMD_SSSE3 */

deps/v8/third_party/zlib/adler32_simd.h

@@ -0,0 +1,16 @@
+/* adler32_simd.h
+ *
+ * Copyright 2017 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#include <stdint.h>
+
+#include "zconf.h"
+#include "zutil.h"
+
+uint32_t ZLIB_INTERNAL adler32_simd_(
+    uint32_t adler,
+    const unsigned char *buf,
+    z_size_t len);

deps/v8/third_party/zlib/chromeconf.h

@@ -0,0 +1,206 @@
+/* Copyright 2017 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+#ifndef THIRD_PARTY_ZLIB_CHROMECONF_H_
+#define THIRD_PARTY_ZLIB_CHROMECONF_H_
+
+#if defined(COMPONENT_BUILD)
+#if defined(WIN32)
+#if defined(ZLIB_IMPLEMENTATION)
+#define ZEXTERN __declspec(dllexport)
+#else
+#define ZEXTERN __declspec(dllimport)
+#endif
+#elif defined(ZLIB_IMPLEMENTATION)
+#define ZEXTERN __attribute__((visibility("default")))
+#endif
+#endif
+
+/* Rename all zlib names with a Cr_z_ prefix. This is based on the Z_PREFIX
+ * option from zconf.h, but with a custom prefix. Where zconf.h would rename
+ * both a macro and its underscore-suffixed internal implementation (such as
+ * deflateInit2 and deflateInit2_), only the implementation is renamed here.
+ * The Byte type is also omitted.
+ *
+ * To generate this list, run
+ * sed -rn -e 's/^# *define +([^ ]+) +(z_[^ ]+)$/#define \1 Cr_\2/p' zconf.h
+ * (use -E instead of -r on macOS).
+ *
+ * gzread is also addressed by modifications in gzread.c and zlib.h. */
+
+#define Z_CR_PREFIX_SET
+
+#define _dist_code Cr_z__dist_code
+#define _length_code Cr_z__length_code
+#define _tr_align Cr_z__tr_align
+#define _tr_flush_bits Cr_z__tr_flush_bits
+#define _tr_flush_block Cr_z__tr_flush_block
+#define _tr_init Cr_z__tr_init
+#define _tr_stored_block Cr_z__tr_stored_block
+#define _tr_tally Cr_z__tr_tally
+#define adler32 Cr_z_adler32
+#define adler32_combine Cr_z_adler32_combine
+#define adler32_combine64 Cr_z_adler32_combine64
+#define adler32_z Cr_z_adler32_z
+#define compress Cr_z_compress
+#define compress2 Cr_z_compress2
+#define compressBound Cr_z_compressBound
+#define crc32 Cr_z_crc32
+#define crc32_combine Cr_z_crc32_combine
+#define crc32_combine64 Cr_z_crc32_combine64
+#define crc32_combine_gen64 Cr_z_crc32_combine_gen64
+#define crc32_combine_gen Cr_z_crc32_combine_gen
+#define crc32_combine_op Cr_z_crc32_combine_op
+#define crc32_z Cr_z_crc32_z
+#define deflate Cr_z_deflate
+#define deflateBound Cr_z_deflateBound
+#define deflateCopy Cr_z_deflateCopy
+#define deflateEnd Cr_z_deflateEnd
+#define deflateGetDictionary Cr_z_deflateGetDictionary
+/* #undef deflateInit */
+/* #undef deflateInit2 */
+#define deflateInit2_ Cr_z_deflateInit2_
+#define deflateInit_ Cr_z_deflateInit_
+#define deflateParams Cr_z_deflateParams
+#define deflatePending Cr_z_deflatePending
+#define deflatePrime Cr_z_deflatePrime
+#define deflateReset Cr_z_deflateReset
+#define deflateResetKeep Cr_z_deflateResetKeep
+#define deflateSetDictionary Cr_z_deflateSetDictionary
+#define deflateSetHeader Cr_z_deflateSetHeader
+#define deflateTune Cr_z_deflateTune
+#define deflate_copyright Cr_z_deflate_copyright
+#define get_crc_table Cr_z_get_crc_table
+#define gz_error Cr_z_gz_error
+#define gz_intmax Cr_z_gz_intmax
+#define gz_strwinerror Cr_z_gz_strwinerror
+#define gzbuffer Cr_z_gzbuffer
+#define gzclearerr Cr_z_gzclearerr
+#define gzclose Cr_z_gzclose
+#define gzclose_r Cr_z_gzclose_r
+#define gzclose_w Cr_z_gzclose_w
+#define gzdirect Cr_z_gzdirect
+#define gzdopen Cr_z_gzdopen
+#define gzeof Cr_z_gzeof
+#define gzerror Cr_z_gzerror
+#define gzflush Cr_z_gzflush
+#define gzfread Cr_z_gzfread
+#define gzfwrite Cr_z_gzfwrite
+#define gzgetc Cr_z_gzgetc
+#define gzgetc_ Cr_z_gzgetc_
+#define gzgets Cr_z_gzgets
+#define gzoffset Cr_z_gzoffset
+#define gzoffset64 Cr_z_gzoffset64
+#define gzopen Cr_z_gzopen
+#define gzopen64 Cr_z_gzopen64
+#define gzopen_w Cr_z_gzopen_w
+#define gzprintf Cr_z_gzprintf
+#define gzputc Cr_z_gzputc
+#define gzputs Cr_z_gzputs
+#define gzread Cr_z_gzread
+#define gzrewind Cr_z_gzrewind
+#define gzseek Cr_z_gzseek
+#define gzseek64 Cr_z_gzseek64
+#define gzsetparams Cr_z_gzsetparams
+#define gztell Cr_z_gztell
+#define gztell64 Cr_z_gztell64
+#define gzungetc Cr_z_gzungetc
+#define gzvprintf Cr_z_gzvprintf
+#define gzwrite Cr_z_gzwrite
+#define inflate Cr_z_inflate
+#define inflateBack Cr_z_inflateBack
+#define inflateBackEnd Cr_z_inflateBackEnd
+/* #undef inflateBackInit */
+#define inflateBackInit_ Cr_z_inflateBackInit_
+#define inflateCodesUsed Cr_z_inflateCodesUsed
+#define inflateCopy Cr_z_inflateCopy
+#define inflateEnd Cr_z_inflateEnd
+#define inflateGetDictionary Cr_z_inflateGetDictionary
+#define inflateGetHeader Cr_z_inflateGetHeader
+/* #undef inflateInit */
+/* #undef inflateInit2 */
+#define inflateInit2_ Cr_z_inflateInit2_
+#define inflateInit_ Cr_z_inflateInit_
+#define inflateMark Cr_z_inflateMark
+#define inflatePrime Cr_z_inflatePrime
+#define inflateReset Cr_z_inflateReset
+#define inflateReset2 Cr_z_inflateReset2
+#define inflateResetKeep Cr_z_inflateResetKeep
+#define inflateSetDictionary Cr_z_inflateSetDictionary
+#define inflateSync Cr_z_inflateSync
+#define inflateSyncPoint Cr_z_inflateSyncPoint
+#define inflateUndermine Cr_z_inflateUndermine
+#define inflateValidate Cr_z_inflateValidate
+#define inflate_copyright Cr_z_inflate_copyright
+#define inflate_fast Cr_z_inflate_fast
+#define inflate_table Cr_z_inflate_table
+#define uncompress Cr_z_uncompress
+#define uncompress2 Cr_z_uncompress2
+#define zError Cr_z_zError
+#define zcalloc Cr_z_zcalloc
+#define zcfree Cr_z_zcfree
+#define zlibCompileFlags Cr_z_zlibCompileFlags
+#define zlibVersion Cr_z_zlibVersion
+/* #undef Byte */
+#define Bytef Cr_z_Bytef
+#define alloc_func Cr_z_alloc_func
+#define charf Cr_z_charf
+#define free_func Cr_z_free_func
+#define gzFile Cr_z_gzFile
+#define gz_header Cr_z_gz_header
+#define gz_headerp Cr_z_gz_headerp
+#define in_func Cr_z_in_func
+#define intf Cr_z_intf
+#define out_func Cr_z_out_func
+#define uInt Cr_z_uInt
+#define uIntf Cr_z_uIntf
+#define uLong Cr_z_uLong
+#define uLongf Cr_z_uLongf
+#define voidp Cr_z_voidp
+#define voidpc Cr_z_voidpc
+#define voidpf Cr_z_voidpf
+#define gz_header_s Cr_z_gz_header_s
+/* #undef internal_state */
+/* #undef z_off64_t */
+
+/* An exported symbol that isn't handled by Z_PREFIX in zconf.h */
+#define z_errmsg Cr_z_z_errmsg
+
+/* Symbols added in simd.patch */
+#define copy_with_crc Cr_z_copy_with_crc
+#define crc_finalize Cr_z_crc_finalize
+#define crc_fold_512to32 Cr_z_crc_fold_512to32
+#define crc_fold_copy Cr_z_crc_fold_copy
+#define crc_fold_init Cr_z_crc_fold_init
+#define crc_reset Cr_z_crc_reset
+#define fill_window_sse Cr_z_fill_window_sse
+#define deflate_read_buf Cr_z_deflate_read_buf
+#define x86_check_features Cr_z_x86_check_features
+#define x86_cpu_enable_simd Cr_z_x86_cpu_enable_simd
+
+/* Symbols added by adler_simd.c */
+#define adler32_simd_ Cr_z_adler32_simd_
+#define x86_cpu_enable_ssse3 Cr_z_x86_cpu_enable_ssse3
+
+/* Symbols added by contrib/optimizations/inffast_chunk */
+#define inflate_fast_chunk_ Cr_z_inflate_fast_chunk_
+
+/* Symbols added by crc32_simd.c */
+#define crc32_sse42_simd_ Cr_z_crc32_sse42_simd_
+
+/* Symbols added by armv8_crc32 */
+#define arm_cpu_enable_crc32 Cr_z_arm_cpu_enable_crc32
+#define arm_cpu_enable_pmull Cr_z_arm_cpu_enable_pmull
+#define arm_check_features Cr_z_arm_check_features
+#define armv8_crc32_little Cr_z_armv8_crc32_little
+#define armv8_crc32_pmull_little Cr_z_armv8_crc32_pmull_little
+
+/* Symbols added by cpu_features.c */
+#define cpu_check_features Cr_z_cpu_check_features
+#define x86_cpu_enable_sse2 Cr_z_x86_cpu_enable_sse2
+#define x86_cpu_enable_avx512 Cr_z_x86_cpu_enable_avx512
+#define riscv_cpu_enable_rvv Cr_z_riscv_cpu_enable_rvv
+#define riscv_cpu_enable_vclmul Cr_z_riscv_cpu_enable_vclmul
+
+#endif /* THIRD_PARTY_ZLIB_CHROMECONF_H_ */

deps/v8/third_party/zlib/compress.c

@@ -0,0 +1,85 @@
+/* compress.c -- compress a memory buffer
+ * Copyright (C) 1995-2005, 2014, 2016 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#define ZLIB_INTERNAL
+#include "zlib.h"
+
+/* ===========================================================================
+     Compresses the source buffer into the destination buffer. The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer. Upon entry, destLen is the total size of the
+   destination buffer, which must be at least 0.1% larger than sourceLen plus
+   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+*/
+int ZEXPORT compress2(Bytef *dest, uLongf *destLen, const Bytef *source,
+                      uLong sourceLen, int level) {
+    z_stream stream;
+    int err;
+    const uInt max = (uInt)-1;
+    uLong left;
+
+    left = *destLen;
+    *destLen = 0;
+
+    stream.zalloc = (alloc_func)0;
+    stream.zfree = (free_func)0;
+    stream.opaque = (voidpf)0;
+
+    err = deflateInit(&stream, level);
+    if (err != Z_OK) return err;
+
+    stream.next_out = dest;
+    stream.avail_out = 0;
+    stream.next_in = (z_const Bytef *)source;
+    stream.avail_in = 0;
+
+    do {
+        if (stream.avail_out == 0) {
+            stream.avail_out = left > (uLong)max ? max : (uInt)left;
+            left -= stream.avail_out;
+        }
+        if (stream.avail_in == 0) {
+            stream.avail_in = sourceLen > (uLong)max ? max : (uInt)sourceLen;
+            sourceLen -= stream.avail_in;
+        }
+        err = deflate(&stream, sourceLen ? Z_NO_FLUSH : Z_FINISH);
+    } while (err == Z_OK);
+
+    *destLen = stream.total_out;
+    deflateEnd(&stream);
+    return err == Z_STREAM_END ? Z_OK : err;
+}
+
+/* ===========================================================================
+ */
+int ZEXPORT compress(Bytef *dest, uLongf *destLen, const Bytef *source,
+                     uLong sourceLen) {
+    return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
+}
+
+/* ===========================================================================
+     If the default memLevel or windowBits for deflateInit() is changed, then
+   this function needs to be updated.
+ */
+uLong ZEXPORT compressBound(uLong sourceLen) {
+    sourceLen = sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
+                (sourceLen >> 25) + 13;
+    /* FIXME(cavalcantii): usage of CRC32 Castagnoli as a hash function
+     * for the hash table of symbols used for compression has a side effect
+     * where for compression level [4, 5] it will increase the output buffer size
+     * by 0.1% (i.e. less than 1%) for a high entropy input (i.e. random data).
+     * To avoid a scenario where client code would fail, for safety we increase
+     * the expected output size by 0.8% (i.e. 8x more than the worst scenario).
+     * See: http://crbug.com/990489
+     */
+    sourceLen += sourceLen >> 7; // Equivalent to 1.0078125
+    return sourceLen;
+}

deps/v8/third_party/zlib/contrib/minizip/ChangeLogUnzip

@@ -0,0 +1,67 @@
+Change in 1.01e (12 feb 05)
+- Fix in zipOpen2 for globalcomment (Rolf Kalbermatter)
+- Fix possible memory leak in unzip.c (Zoran Stevanovic)
+
+Change in 1.01b (20 may 04)
+- Integrate patch from Debian package (submited by Mark Brown)
+- Add tools mztools from Xavier Roche
+
+Change in 1.01 (8 may 04)
+- fix buffer overrun risk in unzip.c (Xavier Roche)
+- fix a minor buffer insecurity in minizip.c (Mike Whittaker)
+
+Change in 1.00: (10 sept 03)
+- rename to 1.00
+- cosmetic code change
+
+Change in 0.22: (19 May 03)
+- crypting support (unless you define NOCRYPT)
+- append file in existing zipfile
+
+Change in 0.21: (10 Mar 03)
+- bug fixes
+
+Change in 0.17: (27 Jan 02)
+- bug fixes
+
+Change in 0.16: (19 Jan 02)
+- Support of ioapi for virtualize zip file access
+
+Change in 0.15: (19 Mar 98)
+- fix memory leak in minizip.c
+
+Change in 0.14: (10 Mar 98)
+- fix bugs in minizip.c sample for zipping big file
+- fix problem in month in date handling
+- fix bug in unzlocal_GetCurrentFileInfoInternal in unzip.c for
+    comment handling
+
+Change in 0.13: (6 Mar 98)
+- fix bugs in zip.c
+- add real minizip sample
+
+Change in 0.12: (4 Mar 98)
+- add zip.c and zip.h for creates .zip file
+- fix change_file_date in miniunz.c for Unix (Jean-loup Gailly)
+- fix miniunz.c for file without specific record for directory
+
+Change in 0.11: (3 Mar 98)
+- fix bug in unzGetCurrentFileInfo for get extra field and comment
+- enhance miniunz sample, remove the bad unztst.c sample
+
+Change in 0.10: (2 Mar 98)
+- fix bug in unzReadCurrentFile
+- rename unzip* to unz* function and structure
+- remove Windows-like hungary notation variable name
+- modify some structure in unzip.h
+- add somes comment in source
+- remove unzipGetcCurrentFile function
+- replace ZUNZEXPORT by ZEXPORT
+- add unzGetLocalExtrafield for get the local extrafield info
+- add a new sample, miniunz.c
+
+Change in 0.4: (25 Feb 98)
+- suppress the type unzipFileInZip.
+  Only on file in the zipfile can be open at the same time
+- fix somes typo in code
+- added tm_unz structure in unzip_file_info (date/time in readable format)

deps/v8/third_party/zlib/contrib/minizip/Makefile

@@ -0,0 +1,37 @@
+CC?=cc
+CFLAGS := -O $(CFLAGS) -I../..
+
+UNZ_OBJS = miniunz.o unzip.o ioapi.o ../../libz.a
+ZIP_OBJS = minizip.o zip.o   ioapi.o ../../libz.a
+
+.c.o:
+	$(CC) -c $(CFLAGS) $*.c
+
+all: miniunz minizip
+
+miniunz.o: miniunz.c unzip.h iowin32.h
+minizip.o: minizip.c zip.h iowin32.h ints.h
+unzip.o: unzip.c unzip.h crypt.h
+zip.o: zip.c zip.h crypt.h skipset.h ints.h
+ioapi.o: ioapi.c ioapi.h ints.h
+iowin32.o: iowin32.c iowin32.h ioapi.h
+mztools.o: mztools.c unzip.h
+
+miniunz: $(UNZ_OBJS)
+	$(CC) $(CFLAGS) -o $@ $(UNZ_OBJS)
+
+minizip: $(ZIP_OBJS)
+	$(CC) $(CFLAGS) -o $@ $(ZIP_OBJS)
+
+test: miniunz minizip
+	@rm -f test.*
+	@echo hello hello hello > test.txt
+	./minizip test test.txt
+	./miniunz -l test.zip
+	@mv test.txt test.old
+	./miniunz test.zip
+	@cmp test.txt test.old
+	@rm -f test.*
+
+clean:
+	/bin/rm -f *.o *~ minizip miniunz test.*

deps/v8/third_party/zlib/contrib/minizip/README.chromium

@@ -0,0 +1,36 @@
+Name: ZIP file API for reading file entries in a ZIP archive
+Short Name: minizip
+URL: https://github.com/madler/zlib/tree/master/contrib/minizip
+Version: 1.3.1.1
+Revision: ef24c4c7502169f016dcd2a26923dbaf3216748c
+License: Zlib
+License File: //third_party/zlib/LICENSE
+Shipped: yes
+Security Critical: yes
+CPEPrefix: cpe:/a:minizip_project:minizip
+
+Description:
+Minizip provides API on top of zlib that can enumerate and extract ZIP archive
+files. See minizip.md for chromium build instructions.
+
+Local Modifications:
+- OS macro tweaks for Android and Fuchsia
+  0000-build.patch (the contrib/minizip/ parts)
+  0008-minizip-zip-unzip-tools.patch (crrev.com/886990)
+
+- Fix build on UWP. (crrev.com/750639)
+  0004-fix-uwp.patch
+
+- Fixed uncompressing files with wrong uncompressed size set
+  crrev.com/268940
+  0014-minizip-unzip-with-incorrect-size.patch
+
+- Enable traditional PKWARE decryption in zlib/contrib/minizip
+	Correct the value of rest_read_compressed when decompressing an encrypted
+  zip. (crrev.com/580862)
+  0015-minizip-unzip-enable-decryption.patch
+
+- Add parsing of the 'Info-ZIP Unicode Path Extra Field' as described in
+  https://pkware.cachefly.net/webdocs/casestudies/APPNOTE.TXT section 4.6.9.
+  (see crrev.com/1002476)
+  0016-minizip-parse-unicode-path-extra-field.patch

deps/v8/third_party/zlib/contrib/minizip/crypt.h

@@ -0,0 +1,128 @@
+/* crypt.h -- base code for crypt/uncrypt ZIPfile
+
+
+   Version 1.01e, February 12th, 2005
+
+   Copyright (C) 1998-2005 Gilles Vollant
+
+   This code is a modified version of crypting code in Infozip distribution
+
+   The encryption/decryption parts of this source code (as opposed to the
+   non-echoing password parts) were originally written in Europe.  The
+   whole source package can be freely distributed, including from the USA.
+   (Prior to January 2000, re-export from the US was a violation of US law.)
+
+   This encryption code is a direct transcription of the algorithm from
+   Roger Schlafly, described by Phil Katz in the file appnote.txt.  This
+   file (appnote.txt) is distributed with the PKZIP program (even in the
+   version without encryption capabilities).
+
+   If you don't need crypting in your application, just define symbols
+   NOCRYPT and NOUNCRYPT.
+
+   This code support the "Traditional PKWARE Encryption".
+
+   The new AES encryption added on Zip format by Winzip (see the page
+   http://www.winzip.com/aes_info.htm ) and PKWare PKZip 5.x Strong
+   Encryption is not supported.
+*/
+
+#define CRC32(c, b) ((*(pcrc_32_tab+(((int)(c) ^ (b)) & 0xff))) ^ ((c) >> 8))
+
+/***********************************************************************
+ * Return the next byte in the pseudo-random sequence
+ */
+static int decrypt_byte(unsigned long* pkeys, const z_crc_t* pcrc_32_tab) {
+    unsigned temp;  /* POTENTIAL BUG:  temp*(temp^1) may overflow in an
+                     * unpredictable manner on 16-bit systems; not a problem
+                     * with any known compiler so far, though */
+
+    (void)pcrc_32_tab;
+    temp = ((unsigned)(*(pkeys+2)) & 0xffff) | 2;
+    return (int)(((temp * (temp ^ 1)) >> 8) & 0xff);
+}
+
+/***********************************************************************
+ * Update the encryption keys with the next byte of plain text
+ */
+static int update_keys(unsigned long* pkeys, const z_crc_t* pcrc_32_tab, int c) {
+    (*(pkeys+0)) = CRC32((*(pkeys+0)), c);
+    (*(pkeys+1)) += (*(pkeys+0)) & 0xff;
+    (*(pkeys+1)) = (*(pkeys+1)) * 134775813L + 1;
+    {
+      register int keyshift = (int)((*(pkeys+1)) >> 24);
+      (*(pkeys+2)) = CRC32((*(pkeys+2)), keyshift);
+    }
+    return c;
+}
+
+
+/***********************************************************************
+ * Initialize the encryption keys and the random header according to
+ * the given password.
+ */
+static void init_keys(const char* passwd, unsigned long* pkeys, const z_crc_t* pcrc_32_tab) {
+    *(pkeys+0) = 305419896L;
+    *(pkeys+1) = 591751049L;
+    *(pkeys+2) = 878082192L;
+    while (*passwd != '\0') {
+        update_keys(pkeys,pcrc_32_tab,(int)*passwd);
+        passwd++;
+    }
+}
+
+#define zdecode(pkeys,pcrc_32_tab,c) \
+    (update_keys(pkeys,pcrc_32_tab,c ^= decrypt_byte(pkeys,pcrc_32_tab)))
+
+#define zencode(pkeys,pcrc_32_tab,c,t) \
+    (t=decrypt_byte(pkeys,pcrc_32_tab), update_keys(pkeys,pcrc_32_tab,c), (Byte)t^(c))
+
+#ifdef INCLUDECRYPTINGCODE_IFCRYPTALLOWED
+
+#define RAND_HEAD_LEN  12
+   /* "last resort" source for second part of crypt seed pattern */
+#  ifndef ZCR_SEED2
+#    define ZCR_SEED2 3141592654UL      /* use PI as default pattern */
+#  endif
+
+static unsigned crypthead(const char* passwd,       /* password string */
+                          unsigned char* buf,       /* where to write header */
+                          int bufSize,
+                          unsigned long* pkeys,
+                          const z_crc_t* pcrc_32_tab,
+                          unsigned long crcForCrypting) {
+    unsigned n;                  /* index in random header */
+    int t;                       /* temporary */
+    int c;                       /* random byte */
+    unsigned char header[RAND_HEAD_LEN-2]; /* random header */
+    static unsigned calls = 0;   /* ensure different random header each time */
+
+    if (bufSize<RAND_HEAD_LEN)
+      return 0;
+
+    /* First generate RAND_HEAD_LEN-2 random bytes. We encrypt the
+     * output of rand() to get less predictability, since rand() is
+     * often poorly implemented.
+     */
+    if (++calls == 1)
+    {
+        srand((unsigned)(time(NULL) ^ ZCR_SEED2));
+    }
+    init_keys(passwd, pkeys, pcrc_32_tab);
+    for (n = 0; n < RAND_HEAD_LEN-2; n++)
+    {
+        c = (rand() >> 7) & 0xff;
+        header[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, c, t);
+    }
+    /* Encrypt random header (last two bytes is high word of crc) */
+    init_keys(passwd, pkeys, pcrc_32_tab);
+    for (n = 0; n < RAND_HEAD_LEN-2; n++)
+    {
+        buf[n] = (unsigned char)zencode(pkeys, pcrc_32_tab, header[n], t);
+    }
+    buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 16) & 0xff, t);
+    buf[n++] = (unsigned char)zencode(pkeys, pcrc_32_tab, (int)(crcForCrypting >> 24) & 0xff, t);
+    return n;
+}
+
+#endif

deps/v8/third_party/zlib/contrib/minizip/ints.h

@@ -0,0 +1,57 @@
+/* ints.h -- create integer types for 8, 16, 32, and 64 bits
+ * Copyright (C) 2024 Mark Adler
+ * For conditions of distribution and use, see the copyright notice in zlib.h
+ *
+ * There exist compilers with limits.h, but not stdint.h or inttypes.h.
+ */
+
+#ifndef INTS_H
+#define INTS_H
+#include <limits.h>
+#if defined(UCHAR_MAX) && UCHAR_MAX == 0xff
+    typedef signed char i8_t;
+    typedef unsigned char ui8_t;
+#else
+#   error "no 8-bit integer"
+#endif
+#if defined(USHRT_MAX) && USHRT_MAX == 0xffff
+    typedef short i16_t;
+    typedef unsigned short ui16_t;
+#elif defined(UINT_MAX) && UINT_MAX == 0xffff
+    typedef int i16_t;
+    typedef unsigned ui16_t;
+#else
+#   error "no 16-bit integer"
+#endif
+#if defined(UINT_MAX) && UINT_MAX == 0xffffffff
+    typedef int i32_t;
+    typedef unsigned ui32_t;
+#   define PI32 "d"
+#   define PUI32 "u"
+#elif defined(ULONG_MAX) && ULONG_MAX == 0xffffffff
+    typedef long i32_t;
+    typedef unsigned long ui32_t;
+#   define PI32 "ld"
+#   define PUI32 "lu"
+#else
+#   error "no 32-bit integer"
+#endif
+#if defined(ULONG_MAX) && ULONG_MAX == 0xffffffffffffffff
+    typedef long i64_t;
+    typedef unsigned long ui64_t;
+#   define PI64 "ld"
+#   define PUI64 "lu"
+#elif defined(ULLONG_MAX) && ULLONG_MAX == 0xffffffffffffffff
+    typedef long long i64_t;
+    typedef unsigned long long ui64_t;
+#   define PI64 "lld"
+#   define PUI64 "llu"
+#elif defined(ULONG_LONG_MAX) && ULONG_LONG_MAX == 0xffffffffffffffff
+    typedef long long i64_t;
+    typedef unsigned long long ui64_t;
+#   define PI64 "lld"
+#   define PUI64 "llu"
+#else
+#   error "no 64-bit integer"
+#endif
+#endif

deps/v8/third_party/zlib/contrib/minizip/ioapi.c

@@ -0,0 +1,231 @@
+/* ioapi.h -- IO base function header for compress/uncompress .zip
+   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications for Zip64 support
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+         For more info read MiniZip_info.txt
+
+*/
+
+#if defined(_WIN32) && (!(defined(_CRT_SECURE_NO_WARNINGS)))
+        #define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#if defined(__APPLE__) || defined(__Fuchsia__) || defined(IOAPI_NO_64) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
+// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
+#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
+#define FTELLO_FUNC(stream) ftello(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
+#else
+#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
+#define FTELLO_FUNC(stream) ftello64(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
+#endif
+
+
+#include "ioapi.h"
+
+voidpf call_zopen64 (const zlib_filefunc64_32_def* pfilefunc, const void*filename, int mode) {
+    if (pfilefunc->zfile_func64.zopen64_file != NULL)
+        return (*(pfilefunc->zfile_func64.zopen64_file)) (pfilefunc->zfile_func64.opaque,filename,mode);
+    else
+    {
+        return (*(pfilefunc->zopen32_file))(pfilefunc->zfile_func64.opaque,(const char*)filename,mode);
+    }
+}
+
+long call_zseek64 (const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin) {
+    if (pfilefunc->zfile_func64.zseek64_file != NULL)
+        return (*(pfilefunc->zfile_func64.zseek64_file)) (pfilefunc->zfile_func64.opaque,filestream,offset,origin);
+    else
+    {
+        uLong offsetTruncated = (uLong)offset;
+        if (offsetTruncated != offset)
+            return -1;
+        else
+            return (*(pfilefunc->zseek32_file))(pfilefunc->zfile_func64.opaque,filestream,offsetTruncated,origin);
+    }
+}
+
+ZPOS64_T call_ztell64 (const zlib_filefunc64_32_def* pfilefunc, voidpf filestream) {
+    if (pfilefunc->zfile_func64.zseek64_file != NULL)
+        return (*(pfilefunc->zfile_func64.ztell64_file)) (pfilefunc->zfile_func64.opaque,filestream);
+    else
+    {
+        uLong tell_uLong = (uLong)(*(pfilefunc->ztell32_file))(pfilefunc->zfile_func64.opaque,filestream);
+        if ((tell_uLong) == MAXU32)
+            return (ZPOS64_T)-1;
+        else
+            return tell_uLong;
+    }
+}
+
+void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32, const zlib_filefunc_def* p_filefunc32) {
+    p_filefunc64_32->zfile_func64.zopen64_file = NULL;
+    p_filefunc64_32->zopen32_file = p_filefunc32->zopen_file;
+    p_filefunc64_32->zfile_func64.zread_file = p_filefunc32->zread_file;
+    p_filefunc64_32->zfile_func64.zwrite_file = p_filefunc32->zwrite_file;
+    p_filefunc64_32->zfile_func64.ztell64_file = NULL;
+    p_filefunc64_32->zfile_func64.zseek64_file = NULL;
+    p_filefunc64_32->zfile_func64.zclose_file = p_filefunc32->zclose_file;
+    p_filefunc64_32->zfile_func64.zerror_file = p_filefunc32->zerror_file;
+    p_filefunc64_32->zfile_func64.opaque = p_filefunc32->opaque;
+    p_filefunc64_32->zseek32_file = p_filefunc32->zseek_file;
+    p_filefunc64_32->ztell32_file = p_filefunc32->ztell_file;
+}
+
+
+
+static voidpf ZCALLBACK fopen_file_func(voidpf opaque, const char* filename, int mode) {
+    FILE* file = NULL;
+    const char* mode_fopen = NULL;
+    (void)opaque;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
+        mode_fopen = "rb";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+        mode_fopen = "r+b";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+        mode_fopen = "wb";
+
+    if ((filename!=NULL) && (mode_fopen != NULL))
+        file = fopen(filename, mode_fopen);
+    return file;
+}
+
+static voidpf ZCALLBACK fopen64_file_func(voidpf opaque, const void* filename, int mode) {
+    FILE* file = NULL;
+    const char* mode_fopen = NULL;
+    (void)opaque;
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
+        mode_fopen = "rb";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+        mode_fopen = "r+b";
+    else
+    if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+        mode_fopen = "wb";
+
+    if ((filename!=NULL) && (mode_fopen != NULL))
+        file = FOPEN_FUNC((const char*)filename, mode_fopen);
+    return file;
+}
+
+
+static uLong ZCALLBACK fread_file_func(voidpf opaque, voidpf stream, void* buf, uLong size) {
+    uLong ret;
+    (void)opaque;
+    ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);
+    return ret;
+}
+
+static uLong ZCALLBACK fwrite_file_func(voidpf opaque, voidpf stream, const void* buf, uLong size) {
+    uLong ret;
+    (void)opaque;
+    ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);
+    return ret;
+}
+
+static long ZCALLBACK ftell_file_func(voidpf opaque, voidpf stream) {
+    long ret;
+    (void)opaque;
+    ret = ftell((FILE *)stream);
+    return ret;
+}
+
+
+static ZPOS64_T ZCALLBACK ftell64_file_func(voidpf opaque, voidpf stream) {
+    ZPOS64_T ret;
+    (void)opaque;
+    ret = (ZPOS64_T)FTELLO_FUNC((FILE *)stream);
+    return ret;
+}
+
+static long ZCALLBACK fseek_file_func(voidpf opaque, voidpf stream, uLong offset, int origin) {
+    int fseek_origin=0;
+    long ret;
+    (void)opaque;
+    switch (origin)
+    {
+    case ZLIB_FILEFUNC_SEEK_CUR :
+        fseek_origin = SEEK_CUR;
+        break;
+    case ZLIB_FILEFUNC_SEEK_END :
+        fseek_origin = SEEK_END;
+        break;
+    case ZLIB_FILEFUNC_SEEK_SET :
+        fseek_origin = SEEK_SET;
+        break;
+    default: return -1;
+    }
+    ret = 0;
+    if (fseek((FILE *)stream, (long)offset, fseek_origin) != 0)
+        ret = -1;
+    return ret;
+}
+
+static long ZCALLBACK fseek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) {
+    int fseek_origin=0;
+    long ret;
+    (void)opaque;
+    switch (origin)
+    {
+    case ZLIB_FILEFUNC_SEEK_CUR :
+        fseek_origin = SEEK_CUR;
+        break;
+    case ZLIB_FILEFUNC_SEEK_END :
+        fseek_origin = SEEK_END;
+        break;
+    case ZLIB_FILEFUNC_SEEK_SET :
+        fseek_origin = SEEK_SET;
+        break;
+    default: return -1;
+    }
+    ret = 0;
+
+    if(FSEEKO_FUNC((FILE *)stream, (z_off64_t)offset, fseek_origin) != 0)
+                        ret = -1;
+
+    return ret;
+}
+
+
+static int ZCALLBACK fclose_file_func(voidpf opaque, voidpf stream) {
+    int ret;
+    (void)opaque;
+    ret = fclose((FILE *)stream);
+    return ret;
+}
+
+static int ZCALLBACK ferror_file_func(voidpf opaque, voidpf stream) {
+    int ret;
+    (void)opaque;
+    ret = ferror((FILE *)stream);
+    return ret;
+}
+
+void fill_fopen_filefunc(zlib_filefunc_def* pzlib_filefunc_def) {
+    pzlib_filefunc_def->zopen_file = fopen_file_func;
+    pzlib_filefunc_def->zread_file = fread_file_func;
+    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
+    pzlib_filefunc_def->ztell_file = ftell_file_func;
+    pzlib_filefunc_def->zseek_file = fseek_file_func;
+    pzlib_filefunc_def->zclose_file = fclose_file_func;
+    pzlib_filefunc_def->zerror_file = ferror_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+void fill_fopen64_filefunc(zlib_filefunc64_def* pzlib_filefunc_def) {
+    pzlib_filefunc_def->zopen64_file = fopen64_file_func;
+    pzlib_filefunc_def->zread_file = fread_file_func;
+    pzlib_filefunc_def->zwrite_file = fwrite_file_func;
+    pzlib_filefunc_def->ztell64_file = ftell64_file_func;
+    pzlib_filefunc_def->zseek64_file = fseek64_file_func;
+    pzlib_filefunc_def->zclose_file = fclose_file_func;
+    pzlib_filefunc_def->zerror_file = ferror_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}

deps/v8/third_party/zlib/contrib/minizip/ioapi.h

@@ -0,0 +1,183 @@
+/* ioapi.h -- IO base function header for compress/uncompress .zip
+   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications for Zip64 support
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+         For more info read MiniZip_info.txt
+
+         Changes
+
+    Oct-2009 - Defined ZPOS64_T to fpos_t on windows and u_int64_t on linux. (might need to find a better why for this)
+    Oct-2009 - Change to fseeko64, ftello64 and fopen64 so large files would work on linux.
+               More if/def section may be needed to support other platforms
+    Oct-2009 - Defined fxxxx64 calls to normal fopen/ftell/fseek so they would compile on windows.
+                          (but you should use iowin32.c for windows instead)
+
+*/
+
+#ifndef ZLIBIOAPI64_H
+#define ZLIBIOAPI64_H
+
+#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))
+
+  // Linux needs this to support file operation on files larger then 4+GB
+  // But might need better if/def to select just the platforms that needs them.
+
+        #ifndef __USE_FILE_OFFSET64
+                #define __USE_FILE_OFFSET64
+        #endif
+        #ifndef __USE_LARGEFILE64
+                #define __USE_LARGEFILE64
+        #endif
+        #ifndef _LARGEFILE64_SOURCE
+                #define _LARGEFILE64_SOURCE
+        #endif
+        #ifndef _FILE_OFFSET_BIT
+                #define _FILE_OFFSET_BIT 64
+        #endif
+
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "zlib.h"
+
+#if defined(USE_FILE32API)
+#define fopen64 fopen
+#define ftello64 ftell
+#define fseeko64 fseek
+#else
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
+#define fopen64 fopen
+#define ftello64 ftello
+#define fseeko64 fseeko
+#endif
+#ifdef _MSC_VER
+ #define fopen64 fopen
+ #if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC)))
+  #define ftello64 _ftelli64
+  #define fseeko64 _fseeki64
+ #else // old MSC
+  #define ftello64 ftell
+  #define fseeko64 fseek
+ #endif
+#endif
+#endif
+
+#ifdef HAVE_MINIZIP64_CONF_H
+#include "mz64conf.h"
+#endif
+
+#include "ints.h"
+typedef ui64_t ZPOS64_T;
+
+/* Maximum unsigned 32-bit value used as placeholder for zip64 */
+#ifndef MAXU32
+#define MAXU32 (0xffffffff)
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define ZLIB_FILEFUNC_SEEK_CUR (1)
+#define ZLIB_FILEFUNC_SEEK_END (2)
+#define ZLIB_FILEFUNC_SEEK_SET (0)
+
+#define ZLIB_FILEFUNC_MODE_READ      (1)
+#define ZLIB_FILEFUNC_MODE_WRITE     (2)
+#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)
+
+#define ZLIB_FILEFUNC_MODE_EXISTING (4)
+#define ZLIB_FILEFUNC_MODE_CREATE   (8)
+
+
+#ifndef ZCALLBACK
+ #if (defined(WIN32) || defined(_WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
+   #define ZCALLBACK CALLBACK
+ #else
+   #define ZCALLBACK
+ #endif
+#endif
+
+
+
+
+typedef voidpf   (ZCALLBACK *open_file_func)      (voidpf opaque, const char* filename, int mode);
+typedef uLong    (ZCALLBACK *read_file_func)      (voidpf opaque, voidpf stream, void* buf, uLong size);
+typedef uLong    (ZCALLBACK *write_file_func)     (voidpf opaque, voidpf stream, const void* buf, uLong size);
+typedef int      (ZCALLBACK *close_file_func)     (voidpf opaque, voidpf stream);
+typedef int      (ZCALLBACK *testerror_file_func) (voidpf opaque, voidpf stream);
+
+typedef long     (ZCALLBACK *tell_file_func)      (voidpf opaque, voidpf stream);
+typedef long     (ZCALLBACK *seek_file_func)      (voidpf opaque, voidpf stream, uLong offset, int origin);
+
+
+/* here is the "old" 32 bits structure */
+typedef struct zlib_filefunc_def_s
+{
+    open_file_func      zopen_file;
+    read_file_func      zread_file;
+    write_file_func     zwrite_file;
+    tell_file_func      ztell_file;
+    seek_file_func      zseek_file;
+    close_file_func     zclose_file;
+    testerror_file_func zerror_file;
+    voidpf              opaque;
+} zlib_filefunc_def;
+
+typedef ZPOS64_T (ZCALLBACK *tell64_file_func)    (voidpf opaque, voidpf stream);
+typedef long     (ZCALLBACK *seek64_file_func)    (voidpf opaque, voidpf stream, ZPOS64_T offset, int origin);
+typedef voidpf   (ZCALLBACK *open64_file_func)    (voidpf opaque, const void* filename, int mode);
+
+typedef struct zlib_filefunc64_def_s
+{
+    open64_file_func    zopen64_file;
+    read_file_func      zread_file;
+    write_file_func     zwrite_file;
+    tell64_file_func    ztell64_file;
+    seek64_file_func    zseek64_file;
+    close_file_func     zclose_file;
+    testerror_file_func zerror_file;
+    voidpf              opaque;
+} zlib_filefunc64_def;
+
+void fill_fopen64_filefunc(zlib_filefunc64_def* pzlib_filefunc_def);
+void fill_fopen_filefunc(zlib_filefunc_def* pzlib_filefunc_def);
+
+/* now internal definition, only for zip.c and unzip.h */
+typedef struct zlib_filefunc64_32_def_s
+{
+    zlib_filefunc64_def zfile_func64;
+    open_file_func      zopen32_file;
+    tell_file_func      ztell32_file;
+    seek_file_func      zseek32_file;
+} zlib_filefunc64_32_def;
+
+
+#define ZREAD64(filefunc,filestream,buf,size)     ((*((filefunc).zfile_func64.zread_file))   ((filefunc).zfile_func64.opaque,filestream,buf,size))
+#define ZWRITE64(filefunc,filestream,buf,size)    ((*((filefunc).zfile_func64.zwrite_file))  ((filefunc).zfile_func64.opaque,filestream,buf,size))
+//#define ZTELL64(filefunc,filestream)            ((*((filefunc).ztell64_file)) ((filefunc).opaque,filestream))
+//#define ZSEEK64(filefunc,filestream,pos,mode)   ((*((filefunc).zseek64_file)) ((filefunc).opaque,filestream,pos,mode))
+#define ZCLOSE64(filefunc,filestream)             ((*((filefunc).zfile_func64.zclose_file))  ((filefunc).zfile_func64.opaque,filestream))
+#define ZERROR64(filefunc,filestream)             ((*((filefunc).zfile_func64.zerror_file))  ((filefunc).zfile_func64.opaque,filestream))
+
+voidpf call_zopen64(const zlib_filefunc64_32_def* pfilefunc,const void*filename,int mode);
+long call_zseek64(const zlib_filefunc64_32_def* pfilefunc,voidpf filestream, ZPOS64_T offset, int origin);
+ZPOS64_T call_ztell64(const zlib_filefunc64_32_def* pfilefunc,voidpf filestream);
+
+void fill_zlib_filefunc64_32_def_from_filefunc32(zlib_filefunc64_32_def* p_filefunc64_32,const zlib_filefunc_def* p_filefunc32);
+
+#define ZOPEN64(filefunc,filename,mode)         (call_zopen64((&(filefunc)),(filename),(mode)))
+#define ZTELL64(filefunc,filestream)            (call_ztell64((&(filefunc)),(filestream)))
+#define ZSEEK64(filefunc,filestream,pos,mode)   (call_zseek64((&(filefunc)),(filestream),(pos),(mode)))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

deps/v8/third_party/zlib/contrib/minizip/iowin32.c

@@ -0,0 +1,447 @@
+/* iowin32.c -- IO base function header for compress/uncompress .zip
+     Version 1.1, February 14h, 2010
+     part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications for Zip64 support
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+     For more info read MiniZip_info.txt
+
+*/
+
+#include <stdlib.h>
+
+#include "zlib.h"
+#include "ioapi.h"
+#include "iowin32.h"
+
+#ifndef INVALID_HANDLE_VALUE
+#define INVALID_HANDLE_VALUE (0xFFFFFFFF)
+#endif
+
+#ifndef INVALID_SET_FILE_POINTER
+#define INVALID_SET_FILE_POINTER ((DWORD)-1)
+#endif
+
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#define _WIN32_WINNT 0x601
+#endif
+
+#if !defined(IOWIN32_USING_WINRT_API)
+#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
+// Windows Store or Universal Windows Platform
+#define IOWIN32_USING_WINRT_API 1
+#endif
+#endif
+
+typedef struct
+{
+    HANDLE hf;
+    int error;
+} WIN32FILE_IOWIN;
+
+
+static void win32_translate_open_mode(int mode,
+                                      DWORD* lpdwDesiredAccess,
+                                      DWORD* lpdwCreationDisposition,
+                                      DWORD* lpdwShareMode,
+                                      DWORD* lpdwFlagsAndAttributes) {
+    *lpdwDesiredAccess = *lpdwShareMode = *lpdwFlagsAndAttributes = *lpdwCreationDisposition = 0;
+
+    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)
+    {
+        *lpdwDesiredAccess = GENERIC_READ;
+        *lpdwCreationDisposition = OPEN_EXISTING;
+        *lpdwShareMode = FILE_SHARE_READ;
+    }
+    else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+    {
+        *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
+        *lpdwCreationDisposition = OPEN_EXISTING;
+    }
+    else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+    {
+        *lpdwDesiredAccess = GENERIC_WRITE | GENERIC_READ;
+        *lpdwCreationDisposition = CREATE_ALWAYS;
+    }
+}
+
+static voidpf win32_build_iowin(HANDLE hFile) {
+    voidpf ret=NULL;
+
+    if ((hFile != NULL) && (hFile != INVALID_HANDLE_VALUE))
+    {
+        WIN32FILE_IOWIN w32fiow;
+        w32fiow.hf = hFile;
+        w32fiow.error = 0;
+        ret = malloc(sizeof(WIN32FILE_IOWIN));
+
+        if (ret==NULL)
+            CloseHandle(hFile);
+        else
+            *((WIN32FILE_IOWIN*)ret) = w32fiow;
+    }
+    return ret;
+}
+
+voidpf ZCALLBACK win32_open64_file_func(voidpf opaque, const void* filename, int mode) {
+    (void)opaque;
+    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
+    HANDLE hFile = NULL;
+
+    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
+
+#ifdef IOWIN32_USING_WINRT_API
+#ifdef UNICODE
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+        hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#else
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+    {
+        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
+        MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
+        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+    }
+#endif
+#else
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+        hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+
+    return win32_build_iowin(hFile);
+}
+
+
+voidpf ZCALLBACK win32_open64_file_funcA(voidpf opaque, const void* filename, int mode) {
+    (void)opaque;
+    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
+    HANDLE hFile = NULL;
+
+    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
+
+#ifdef IOWIN32_USING_WINRT_API
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+    {
+        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
+        MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
+        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+    }
+#else
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+        hFile = CreateFileA((LPCSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+
+    return win32_build_iowin(hFile);
+}
+
+
+voidpf ZCALLBACK win32_open64_file_funcW(voidpf opaque, const void* filename, int mode) {
+    (void)opaque;
+    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
+    HANDLE hFile = NULL;
+
+    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
+
+#ifdef IOWIN32_USING_WINRT_API
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+        hFile = CreateFile2((LPCWSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition,NULL);
+#else
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+        hFile = CreateFileW((LPCWSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+
+    return win32_build_iowin(hFile);
+}
+
+
+voidpf ZCALLBACK win32_open_file_func(voidpf opaque, const char* filename, int mode) {
+    (void)opaque;
+    DWORD dwDesiredAccess,dwCreationDisposition,dwShareMode,dwFlagsAndAttributes ;
+    HANDLE hFile = NULL;
+
+    win32_translate_open_mode(mode,&dwDesiredAccess,&dwCreationDisposition,&dwShareMode,&dwFlagsAndAttributes);
+
+#ifdef IOWIN32_USING_WINRT_API
+#ifdef UNICODE
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+        hFile = CreateFile2((LPCTSTR)filename, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+#else
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+    {
+        WCHAR filenameW[FILENAME_MAX + 0x200 + 1];
+        MultiByteToWideChar(CP_ACP,0,(const char*)filename,-1,filenameW,FILENAME_MAX + 0x200);
+        hFile = CreateFile2(filenameW, dwDesiredAccess, dwShareMode, dwCreationDisposition, NULL);
+    }
+#endif
+#else
+    if ((filename!=NULL) && (dwDesiredAccess != 0))
+        hFile = CreateFile((LPCTSTR)filename, dwDesiredAccess, dwShareMode, NULL, dwCreationDisposition, dwFlagsAndAttributes, NULL);
+#endif
+
+    return win32_build_iowin(hFile);
+}
+
+
+uLong ZCALLBACK win32_read_file_func(voidpf opaque, voidpf stream, void* buf,uLong size) {
+    (void)opaque;
+    uLong ret=0;
+    HANDLE hFile = NULL;
+    if (stream!=NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
+
+    if (hFile != NULL)
+    {
+        if (!ReadFile(hFile, buf, size, &ret, NULL))
+        {
+            DWORD dwErr = GetLastError();
+            if (dwErr == ERROR_HANDLE_EOF)
+                dwErr = 0;
+            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
+        }
+    }
+
+    return ret;
+}
+
+
+uLong ZCALLBACK win32_write_file_func(voidpf opaque, voidpf stream, const void* buf, uLong size) {
+    (void)opaque;
+    uLong ret=0;
+    HANDLE hFile = NULL;
+    if (stream!=NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
+
+    if (hFile != NULL)
+    {
+        if (!WriteFile(hFile, buf, size, &ret, NULL))
+        {
+            DWORD dwErr = GetLastError();
+            if (dwErr == ERROR_HANDLE_EOF)
+                dwErr = 0;
+            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
+        }
+    }
+
+    return ret;
+}
+
+static BOOL MySetFilePointerEx(HANDLE hFile, LARGE_INTEGER pos, LARGE_INTEGER *newPos, DWORD dwMoveMethod) {
+#ifdef IOWIN32_USING_WINRT_API
+    return SetFilePointerEx(hFile, pos, newPos, dwMoveMethod);
+#else
+    LONG lHigh = pos.HighPart;
+    DWORD dwNewPos = SetFilePointer(hFile, pos.LowPart, &lHigh, dwMoveMethod);
+    BOOL fOk = TRUE;
+    if (dwNewPos == 0xFFFFFFFF)
+        if (GetLastError() != NO_ERROR)
+            fOk = FALSE;
+    if ((newPos != NULL) && (fOk))
+    {
+        newPos->LowPart = dwNewPos;
+        newPos->HighPart = lHigh;
+    }
+    return fOk;
+#endif
+}
+
+long ZCALLBACK win32_tell_file_func(voidpf opaque, voidpf stream) {
+    (void)opaque;
+    long ret=-1;
+    HANDLE hFile = NULL;
+    if (stream!=NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
+    if (hFile != NULL)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = 0;
+
+        if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
+            ret = -1;
+        }
+        else
+            ret=(long)pos.LowPart;
+    }
+    return ret;
+}
+
+ZPOS64_T ZCALLBACK win32_tell64_file_func(voidpf opaque, voidpf stream) {
+    (void)opaque;
+    ZPOS64_T ret= (ZPOS64_T)-1;
+    HANDLE hFile = NULL;
+    if (stream!=NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+
+    if (hFile)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = 0;
+
+        if (!MySetFilePointerEx(hFile, pos, &pos, FILE_CURRENT))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
+            ret = (ZPOS64_T)-1;
+        }
+        else
+            ret=pos.QuadPart;
+    }
+    return ret;
+}
+
+
+long ZCALLBACK win32_seek_file_func(voidpf opaque, voidpf stream, uLong offset, int origin) {
+    (void)opaque;
+    DWORD dwMoveMethod=0xFFFFFFFF;
+    HANDLE hFile = NULL;
+
+    long ret=-1;
+    if (stream!=NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
+    switch (origin)
+    {
+    case ZLIB_FILEFUNC_SEEK_CUR :
+        dwMoveMethod = FILE_CURRENT;
+        break;
+    case ZLIB_FILEFUNC_SEEK_END :
+        dwMoveMethod = FILE_END;
+        break;
+    case ZLIB_FILEFUNC_SEEK_SET :
+        dwMoveMethod = FILE_BEGIN;
+        break;
+    default: return -1;
+    }
+
+    if (hFile != NULL)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = offset;
+        if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
+            ret = -1;
+        }
+        else
+            ret=0;
+    }
+    return ret;
+}
+
+long ZCALLBACK win32_seek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T offset, int origin) {
+    (void)opaque;
+    DWORD dwMoveMethod=0xFFFFFFFF;
+    HANDLE hFile = NULL;
+    long ret=-1;
+
+    if (stream!=NULL)
+        hFile = ((WIN32FILE_IOWIN*)stream)->hf;
+
+    switch (origin)
+    {
+        case ZLIB_FILEFUNC_SEEK_CUR :
+            dwMoveMethod = FILE_CURRENT;
+            break;
+        case ZLIB_FILEFUNC_SEEK_END :
+            dwMoveMethod = FILE_END;
+            break;
+        case ZLIB_FILEFUNC_SEEK_SET :
+            dwMoveMethod = FILE_BEGIN;
+            break;
+        default: return -1;
+    }
+
+    if (hFile)
+    {
+        LARGE_INTEGER pos;
+        pos.QuadPart = offset;
+        if (!MySetFilePointerEx(hFile, pos, NULL, dwMoveMethod))
+        {
+            DWORD dwErr = GetLastError();
+            ((WIN32FILE_IOWIN*)stream) -> error=(int)dwErr;
+            ret = -1;
+        }
+        else
+            ret=0;
+    }
+    return ret;
+}
+
+int ZCALLBACK win32_close_file_func(voidpf opaque, voidpf stream) {
+    (void)opaque;
+    int ret=-1;
+
+    if (stream!=NULL)
+    {
+        HANDLE hFile;
+        hFile = ((WIN32FILE_IOWIN*)stream) -> hf;
+        if (hFile != NULL)
+        {
+            CloseHandle(hFile);
+            ret=0;
+        }
+        free(stream);
+    }
+    return ret;
+}
+
+int ZCALLBACK win32_error_file_func(voidpf opaque, voidpf stream) {
+    (void)opaque;
+    int ret=-1;
+    if (stream!=NULL)
+    {
+        ret = ((WIN32FILE_IOWIN*)stream) -> error;
+    }
+    return ret;
+}
+
+void fill_win32_filefunc(zlib_filefunc_def* pzlib_filefunc_def) {
+    pzlib_filefunc_def->zopen_file = win32_open_file_func;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell_file = win32_tell_file_func;
+    pzlib_filefunc_def->zseek_file = win32_seek_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def) {
+    pzlib_filefunc_def->zopen64_file = win32_open64_file_func;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
+    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+
+void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def) {
+    pzlib_filefunc_def->zopen64_file = win32_open64_file_funcA;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
+    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}
+
+
+void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def) {
+    pzlib_filefunc_def->zopen64_file = win32_open64_file_funcW;
+    pzlib_filefunc_def->zread_file = win32_read_file_func;
+    pzlib_filefunc_def->zwrite_file = win32_write_file_func;
+    pzlib_filefunc_def->ztell64_file = win32_tell64_file_func;
+    pzlib_filefunc_def->zseek64_file = win32_seek64_file_func;
+    pzlib_filefunc_def->zclose_file = win32_close_file_func;
+    pzlib_filefunc_def->zerror_file = win32_error_file_func;
+    pzlib_filefunc_def->opaque = NULL;
+}

deps/v8/third_party/zlib/contrib/minizip/iowin32.h

@@ -0,0 +1,28 @@
+/* iowin32.h -- IO base function header for compress/uncompress .zip
+     Version 1.1, February 14h, 2010
+     part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications for Zip64 support
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+         For more info read MiniZip_info.txt
+
+*/
+
+#include <windows.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void fill_win32_filefunc(zlib_filefunc_def* pzlib_filefunc_def);
+void fill_win32_filefunc64(zlib_filefunc64_def* pzlib_filefunc_def);
+void fill_win32_filefunc64A(zlib_filefunc64_def* pzlib_filefunc_def);
+void fill_win32_filefunc64W(zlib_filefunc64_def* pzlib_filefunc_def);
+
+#ifdef __cplusplus
+}
+#endif

deps/v8/third_party/zlib/contrib/minizip/miniunz.c

@@ -0,0 +1,647 @@
+/*
+   miniunz.c
+   Version 1.1, February 14h, 2010
+   sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications of Unzip for Zip64
+         Copyright (C) 2007-2008 Even Rouault
+
+         Modifications for Zip64 support on both zip and unzip
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+*/
+
+#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) && (!defined(__ANDROID_API__))
+        #ifndef __USE_FILE_OFFSET64
+                #define __USE_FILE_OFFSET64
+        #endif
+        #ifndef __USE_LARGEFILE64
+                #define __USE_LARGEFILE64
+        #endif
+        #ifndef _LARGEFILE64_SOURCE
+                #define _LARGEFILE64_SOURCE
+        #endif
+        #ifndef _FILE_OFFSET_BIT
+                #define _FILE_OFFSET_BIT 64
+        #endif
+#endif
+
+#if defined(__APPLE__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64) || defined(__Fuchsia__) || defined(__ANDROID_API__)
+// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
+#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
+#define FTELLO_FUNC(stream) ftello(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
+#else
+#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
+#define FTELLO_FUNC(stream) ftello64(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
+#endif
+
+
+#ifndef _CRT_SECURE_NO_WARNINGS
+#  define _CRT_SECURE_NO_WARNINGS
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+
+#ifdef _WIN32
+# include <direct.h>
+# include <io.h>
+#else
+# include <unistd.h>
+# include <utime.h>
+#endif
+
+
+#include "unzip.h"
+
+#define CASESENSITIVITY (0)
+#define WRITEBUFFERSIZE (8192)
+#define MAXFILENAME (256)
+
+#ifdef _WIN32
+#define USEWIN32IOAPI
+#include "iowin32.h"
+#endif
+/*
+  mini unzip, demo of unzip package
+
+  usage :
+  Usage : miniunz [-exvlo] file.zip [file_to_extract] [-d extractdir]
+
+  list the file in the zipfile, and print the content of FILE_ID.ZIP or README.TXT
+    if it exists
+*/
+
+
+/* change_file_date : change the date/time of a file
+    filename : the filename of the file where date/time must be modified
+    dosdate : the new date at the MSDOS format (4 bytes)
+    tmu_date : the SAME new date at the tm_unz format */
+static void change_file_date(const char *filename, uLong dosdate, tm_unz tmu_date) {
+#ifdef _WIN32
+  (void)tmu_date;
+  HANDLE hFile;
+  FILETIME ftm,ftLocal,ftCreate,ftLastAcc,ftLastWrite;
+
+  hFile = CreateFileA(filename,GENERIC_READ | GENERIC_WRITE,
+                      0,NULL,OPEN_EXISTING,0,NULL);
+  GetFileTime(hFile,&ftCreate,&ftLastAcc,&ftLastWrite);
+  DosDateTimeToFileTime((WORD)(dosdate>>16),(WORD)dosdate,&ftLocal);
+  LocalFileTimeToFileTime(&ftLocal,&ftm);
+  SetFileTime(hFile,&ftm,&ftLastAcc,&ftm);
+  CloseHandle(hFile);
+#elif defined(__unix__) || defined(__unix) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__ANDROID_API__)
+  (void)dosdate;
+  struct utimbuf ut;
+  struct tm newdate;
+  newdate.tm_sec = tmu_date.tm_sec;
+  newdate.tm_min=tmu_date.tm_min;
+  newdate.tm_hour=tmu_date.tm_hour;
+  newdate.tm_mday=tmu_date.tm_mday;
+  newdate.tm_mon=tmu_date.tm_mon;
+  if (tmu_date.tm_year > 1900)
+      newdate.tm_year=tmu_date.tm_year - 1900;
+  else
+      newdate.tm_year=tmu_date.tm_year ;
+  newdate.tm_isdst=-1;
+
+  ut.actime=ut.modtime=mktime(&newdate);
+  utime(filename,&ut);
+#else
+  (void)filename;
+  (void)dosdate;
+  (void)tmu_date;
+#endif
+}
+
+
+/* mymkdir and change_file_date are not 100 % portable
+   As I don't know well Unix, I wait feedback for the unix portion */
+
+static int mymkdir(const char* dirname) {
+    int ret=0;
+#ifdef _WIN32
+    ret = _mkdir(dirname);
+#elif defined(__unix__) || defined(__unix) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__ANDROID_API__)
+    ret = mkdir (dirname,0775);
+#else
+    (void)dirname;
+#endif
+    return ret;
+}
+
+static int makedir(const char *newdir) {
+  char *buffer ;
+  char *p;
+  size_t len = strlen(newdir);
+
+  if (len == 0)
+    return 0;
+
+  buffer = (char*)malloc(len+1);
+        if (buffer==NULL)
+        {
+                printf("Error allocating memory\n");
+                return UNZ_INTERNALERROR;
+        }
+  strcpy(buffer,newdir);
+
+  if (buffer[len-1] == '/') {
+    buffer[len-1] = '\0';
+  }
+  if (mymkdir(buffer) == 0)
+    {
+      free(buffer);
+      return 1;
+    }
+
+  p = buffer+1;
+  while (1)
+    {
+      char hold;
+
+      while(*p && *p != '\\' && *p != '/')
+        p++;
+      hold = *p;
+      *p = 0;
+      if ((mymkdir(buffer) == -1) && (errno == ENOENT))
+        {
+          printf("couldn't create directory %s\n",buffer);
+          free(buffer);
+          return 0;
+        }
+      if (hold == 0)
+        break;
+      *p++ = hold;
+    }
+  free(buffer);
+  return 1;
+}
+
+static void do_banner(void) {
+    printf("MiniUnz 1.1, demo of zLib + Unz package written by Gilles Vollant\n");
+    printf("more info at http://www.winimage.com/zLibDll/unzip.html\n\n");
+}
+
+static void do_help(void) {
+    printf("Usage : miniunz [-e] [-x] [-v] [-l] [-o] [-p password] file.zip [file_to_extr.] [-d extractdir]\n\n" \
+           "  -e  Extract without pathname (junk paths)\n" \
+           "  -x  Extract with pathname\n" \
+           "  -v  list files\n" \
+           "  -l  list files\n" \
+           "  -d  directory to extract into\n" \
+           "  -o  overwrite files without prompting\n" \
+           "  -p  extract encrypted file using password\n\n");
+}
+
+static void Display64BitsSize(ZPOS64_T n, int size_char) {
+  /* to avoid compatibility problem , we do here the conversion */
+  char number[21];
+  int offset=19;
+  int pos_string = 19;
+  number[20]=0;
+  for (;;) {
+      number[offset]=(char)((n%10)+'0');
+      if (number[offset] != '0')
+          pos_string=offset;
+      n/=10;
+      if (offset==0)
+          break;
+      offset--;
+  }
+  {
+      int size_display_string = 19-pos_string;
+      while (size_char > size_display_string)
+      {
+          size_char--;
+          printf(" ");
+      }
+  }
+
+  printf("%s",&number[pos_string]);
+}
+
+static int do_list(unzFile uf) {
+    uLong i;
+    unz_global_info64 gi;
+    int err;
+
+    err = unzGetGlobalInfo64(uf,&gi);
+    if (err!=UNZ_OK)
+        printf("error %d with zipfile in unzGetGlobalInfo \n",err);
+    printf("  Length  Method     Size Ratio   Date    Time   CRC-32     Name\n");
+    printf("  ------  ------     ---- -----   ----    ----   ------     ----\n");
+    for (i=0;i<gi.number_entry;i++)
+    {
+        char filename_inzip[65536+1];
+        unz_file_info64 file_info;
+        uLong ratio=0;
+        const char *string_method = "";
+        char charCrypt=' ';
+        err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
+        if (err!=UNZ_OK)
+        {
+            printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
+            break;
+        }
+        if (file_info.uncompressed_size>0)
+            ratio = (uLong)((file_info.compressed_size*100)/file_info.uncompressed_size);
+
+        /* display a '*' if the file is encrypted */
+        if ((file_info.flag & 1) != 0)
+            charCrypt='*';
+
+        if (file_info.compression_method==0)
+            string_method="Stored";
+        else
+        if (file_info.compression_method==Z_DEFLATED)
+        {
+            uInt iLevel=(uInt)((file_info.flag & 0x6)/2);
+            if (iLevel==0)
+              string_method="Defl:N";
+            else if (iLevel==1)
+              string_method="Defl:X";
+            else if ((iLevel==2) || (iLevel==3))
+              string_method="Defl:F"; /* 2:fast , 3 : extra fast*/
+        }
+        else
+        if (file_info.compression_method==Z_BZIP2ED)
+        {
+              string_method="BZip2 ";
+        }
+        else
+            string_method="Unkn. ";
+
+        Display64BitsSize(file_info.uncompressed_size,7);
+        printf("  %6s%c",string_method,charCrypt);
+        Display64BitsSize(file_info.compressed_size,7);
+        printf(" %3lu%%  %2.2lu-%2.2lu-%2.2lu  %2.2lu:%2.2lu  %8.8lx   %s\n",
+                ratio,
+                (uLong)file_info.tmu_date.tm_mon + 1,
+                (uLong)file_info.tmu_date.tm_mday,
+                (uLong)file_info.tmu_date.tm_year % 100,
+                (uLong)file_info.tmu_date.tm_hour,(uLong)file_info.tmu_date.tm_min,
+                (uLong)file_info.crc,filename_inzip);
+        if ((i+1)<gi.number_entry)
+        {
+            err = unzGoToNextFile(uf);
+            if (err!=UNZ_OK)
+            {
+                printf("error %d with zipfile in unzGoToNextFile\n",err);
+                break;
+            }
+        }
+    }
+
+    return 0;
+}
+
+
+static int do_extract_currentfile(unzFile uf, const int* popt_extract_without_path, int* popt_overwrite, const char* password) {
+    char filename_inzip[65536+1];
+    char* filename_withoutpath;
+    char* p;
+    int err=UNZ_OK;
+    FILE *fout=NULL;
+    void* buf;
+    uInt size_buf;
+
+    unz_file_info64 file_info;
+    err = unzGetCurrentFileInfo64(uf,&file_info,filename_inzip,sizeof(filename_inzip),NULL,0,NULL,0);
+
+    if (err!=UNZ_OK)
+    {
+        printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
+        return err;
+    }
+
+    size_buf = WRITEBUFFERSIZE;
+    buf = (void*)malloc(size_buf);
+    if (buf==NULL)
+    {
+        printf("Error allocating memory\n");
+        return UNZ_INTERNALERROR;
+    }
+
+    p = filename_withoutpath = filename_inzip;
+    while ((*p) != '\0')
+    {
+        if (((*p)=='/') || ((*p)=='\\'))
+            filename_withoutpath = p+1;
+        p++;
+    }
+
+    if ((*filename_withoutpath)=='\0')
+    {
+        if ((*popt_extract_without_path)==0)
+        {
+            printf("creating directory: %s\n",filename_inzip);
+            mymkdir(filename_inzip);
+        }
+    }
+    else
+    {
+        const char* write_filename;
+        int skip=0;
+
+        if ((*popt_extract_without_path)==0)
+            write_filename = filename_inzip;
+        else
+            write_filename = filename_withoutpath;
+
+        if (write_filename[0]!='\0')
+        {
+            const char* relative_check = write_filename;
+            while (relative_check[1]!='\0')
+            {
+                if (relative_check[0]=='.' && relative_check[1]=='.')
+                    write_filename = relative_check;
+                relative_check++;
+            }
+        }
+
+        while (write_filename[0]=='/' || write_filename[0]=='.')
+            write_filename++;
+
+        err = unzOpenCurrentFilePassword(uf,password);
+        if (err!=UNZ_OK)
+        {
+            printf("error %d with zipfile in unzOpenCurrentFilePassword\n",err);
+        }
+
+        if (((*popt_overwrite)==0) && (err==UNZ_OK))
+        {
+            char rep=0;
+            FILE* ftestexist;
+            ftestexist = FOPEN_FUNC(write_filename,"rb");
+            if (ftestexist!=NULL)
+            {
+                fclose(ftestexist);
+                do
+                {
+                    char answer[128];
+                    int ret;
+
+                    printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ",write_filename);
+                    ret = scanf("%1s",answer);
+                    if (ret != 1)
+                    {
+                       exit(EXIT_FAILURE);
+                    }
+                    rep = answer[0] ;
+                    if ((rep>='a') && (rep<='z'))
+                        rep -= 0x20;
+                }
+                while ((rep!='Y') && (rep!='N') && (rep!='A'));
+            }
+
+            if (rep == 'N')
+                skip = 1;
+
+            if (rep == 'A')
+                *popt_overwrite=1;
+        }
+
+        if ((skip==0) && (err==UNZ_OK))
+        {
+            fout=FOPEN_FUNC(write_filename,"wb");
+            /* some zipfile don't contain directory alone before file */
+            if ((fout==NULL) && ((*popt_extract_without_path)==0) &&
+                                (filename_withoutpath!=(char*)filename_inzip))
+            {
+                char c=*(filename_withoutpath-1);
+                *(filename_withoutpath-1)='\0';
+                makedir(write_filename);
+                *(filename_withoutpath-1)=c;
+                fout=FOPEN_FUNC(write_filename,"wb");
+            }
+
+            if (fout==NULL)
+            {
+                printf("error opening %s\n",write_filename);
+            }
+        }
+
+        if (fout!=NULL)
+        {
+            printf(" extracting: %s\n",write_filename);
+
+            do
+            {
+                err = unzReadCurrentFile(uf,buf,size_buf);
+                if (err<0)
+                {
+                    printf("error %d with zipfile in unzReadCurrentFile\n",err);
+                    break;
+                }
+                if (err>0)
+                    if (fwrite(buf,(unsigned)err,1,fout)!=1)
+                    {
+                        printf("error in writing extracted file\n");
+                        err=UNZ_ERRNO;
+                        break;
+                    }
+            }
+            while (err>0);
+            if (fout)
+                    fclose(fout);
+
+            if (err==0)
+                change_file_date(write_filename,file_info.dosDate,
+                                 file_info.tmu_date);
+        }
+
+        if (err==UNZ_OK)
+        {
+            err = unzCloseCurrentFile (uf);
+            if (err!=UNZ_OK)
+            {
+                printf("error %d with zipfile in unzCloseCurrentFile\n",err);
+            }
+        }
+        else
+            unzCloseCurrentFile(uf); /* don't lose the error */
+    }
+
+    free(buf);
+    return err;
+}
+
+
+static int do_extract(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char* password) {
+    uLong i;
+    unz_global_info64 gi;
+    int err;
+
+    err = unzGetGlobalInfo64(uf,&gi);
+    if (err!=UNZ_OK)
+        printf("error %d with zipfile in unzGetGlobalInfo \n",err);
+
+    for (i=0;i<gi.number_entry;i++)
+    {
+        if (do_extract_currentfile(uf,&opt_extract_without_path,
+                                      &opt_overwrite,
+                                      password) != UNZ_OK)
+            break;
+
+        if ((i+1)<gi.number_entry)
+        {
+            err = unzGoToNextFile(uf);
+            if (err!=UNZ_OK)
+            {
+                printf("error %d with zipfile in unzGoToNextFile\n",err);
+                break;
+            }
+        }
+    }
+
+    return 0;
+}
+
+static int do_extract_onefile(unzFile uf, const char* filename, int opt_extract_without_path, int opt_overwrite, const char* password) {
+    if (unzLocateFile(uf,filename,CASESENSITIVITY)!=UNZ_OK)
+    {
+        printf("file %s not found in the zipfile\n",filename);
+        return 2;
+    }
+
+    if (do_extract_currentfile(uf,&opt_extract_without_path,
+                                      &opt_overwrite,
+                                      password) == UNZ_OK)
+        return 0;
+    else
+        return 1;
+}
+
+
+int main(int argc, char *argv[]) {
+    const char *zipfilename=NULL;
+    const char *filename_to_extract=NULL;
+    const char *password=NULL;
+    char filename_try[MAXFILENAME+16] = "";
+    int i;
+    int ret_value=0;
+    int opt_do_list=0;
+    int opt_do_extract=1;
+    int opt_do_extract_withoutpath=0;
+    int opt_overwrite=0;
+    int opt_extractdir=0;
+    const char *dirname=NULL;
+    unzFile uf=NULL;
+
+    do_banner();
+    if (argc==1)
+    {
+        do_help();
+        return 0;
+    }
+    else
+    {
+        for (i=1;i<argc;i++)
+        {
+            if ((*argv[i])=='-')
+            {
+                const char *p=argv[i]+1;
+
+                while ((*p)!='\0')
+                {
+                    char c=*(p++);
+                    if ((c=='l') || (c=='L'))
+                        opt_do_list = 1;
+                    if ((c=='v') || (c=='V'))
+                        opt_do_list = 1;
+                    if ((c=='x') || (c=='X'))
+                        opt_do_extract = 1;
+                    if ((c=='e') || (c=='E'))
+                        opt_do_extract = opt_do_extract_withoutpath = 1;
+                    if ((c=='o') || (c=='O'))
+                        opt_overwrite=1;
+                    if ((c=='d') || (c=='D'))
+                    {
+                        opt_extractdir=1;
+                        dirname=argv[i+1];
+                    }
+
+                    if (((c=='p') || (c=='P')) && (i+1<argc))
+                    {
+                        password=argv[i+1];
+                        i++;
+                    }
+                }
+            }
+            else
+            {
+                if (zipfilename == NULL)
+                    zipfilename = argv[i];
+                else if ((filename_to_extract==NULL) && (!opt_extractdir))
+                        filename_to_extract = argv[i] ;
+            }
+        }
+    }
+
+    if (zipfilename!=NULL)
+    {
+
+#        ifdef USEWIN32IOAPI
+        zlib_filefunc64_def ffunc;
+#        endif
+
+        strncpy(filename_try, zipfilename,MAXFILENAME-1);
+        /* strncpy doesn't append the trailing NULL, of the string is too long. */
+        filename_try[ MAXFILENAME ] = '\0';
+
+#        ifdef USEWIN32IOAPI
+        fill_win32_filefunc64A(&ffunc);
+        uf = unzOpen2_64(zipfilename,&ffunc);
+#        else
+        uf = unzOpen64(zipfilename);
+#        endif
+        if (uf==NULL)
+        {
+            strcat(filename_try,".zip");
+#            ifdef USEWIN32IOAPI
+            uf = unzOpen2_64(filename_try,&ffunc);
+#            else
+            uf = unzOpen64(filename_try);
+#            endif
+        }
+    }
+
+    if (uf==NULL)
+    {
+        printf("Cannot open %s or %s.zip\n",zipfilename,zipfilename);
+        return 1;
+    }
+    printf("%s opened\n",filename_try);
+
+    if (opt_do_list==1)
+        ret_value = do_list(uf);
+    else if (opt_do_extract==1)
+    {
+#ifdef _WIN32
+        if (opt_extractdir && _chdir(dirname))
+#else
+        if (opt_extractdir && chdir(dirname))
+#endif
+        {
+          printf("Error changing into %s, aborting\n", dirname);
+          exit(-1);
+        }
+
+        if (filename_to_extract == NULL)
+            ret_value = do_extract(uf, opt_do_extract_withoutpath, opt_overwrite, password);
+        else
+            ret_value = do_extract_onefile(uf, filename_to_extract, opt_do_extract_withoutpath, opt_overwrite, password);
+    }
+
+    unzClose(uf);
+
+    return ret_value;
+}

deps/v8/third_party/zlib/contrib/minizip/minizip.c

@@ -0,0 +1,511 @@
+/*
+   minizip.c
+   Version 1.1, February 14h, 2010
+   sample part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications of Unzip for Zip64
+         Copyright (C) 2007-2008 Even Rouault
+
+         Modifications for Zip64 support on both zip and unzip
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+*/
+
+#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__)) && (!defined(__ANDROID_API__))
+        #ifndef __USE_FILE_OFFSET64
+                #define __USE_FILE_OFFSET64
+        #endif
+        #ifndef __USE_LARGEFILE64
+                #define __USE_LARGEFILE64
+        #endif
+        #ifndef _LARGEFILE64_SOURCE
+                #define _LARGEFILE64_SOURCE
+        #endif
+        #ifndef _FILE_OFFSET_BIT
+                #define _FILE_OFFSET_BIT 64
+        #endif
+#endif
+
+#if defined(__APPLE__) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64) || defined(__Fuchsia__) || defined(__ANDROID_API__)
+// In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
+#define FOPEN_FUNC(filename, mode) fopen(filename, mode)
+#define FTELLO_FUNC(stream) ftello(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko(stream, offset, origin)
+#else
+#define FOPEN_FUNC(filename, mode) fopen64(filename, mode)
+#define FTELLO_FUNC(stream) ftello64(stream)
+#define FSEEKO_FUNC(stream, offset, origin) fseeko64(stream, offset, origin)
+#endif
+
+
+
+#ifndef _CRT_SECURE_NO_WARNINGS
+#  define _CRT_SECURE_NO_WARNINGS
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#ifdef _WIN32
+# include <direct.h>
+# include <io.h>
+#else
+# include <unistd.h>
+# include <utime.h>
+# include <sys/types.h>
+# include <sys/stat.h>
+#endif
+
+#include "zip.h"
+#include "ints.h"
+
+#ifdef _WIN32
+        #define USEWIN32IOAPI
+        #include "iowin32.h"
+#endif
+
+
+
+#define WRITEBUFFERSIZE (16384)
+#define MAXFILENAME (256)
+
+#ifdef _WIN32
+/* f: name of file to get info on, tmzip: return value: access,
+   modification and creation times, dt: dostime */
+static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
+  (void)tmzip;
+  int ret = 0;
+  {
+      FILETIME ftLocal;
+      HANDLE hFind;
+      WIN32_FIND_DATAA ff32;
+
+      hFind = FindFirstFileA(f,&ff32);
+      if (hFind != INVALID_HANDLE_VALUE)
+      {
+        FileTimeToLocalFileTime(&(ff32.ftLastWriteTime),&ftLocal);
+        FileTimeToDosDateTime(&ftLocal,((LPWORD)dt)+1,((LPWORD)dt)+0);
+        FindClose(hFind);
+        ret = 1;
+      }
+  }
+  return ret;
+}
+#elif defined(__unix__) || defined(__unix) || defined(__APPLE__) || defined(__Fuchsia__) || defined(__ANDROID_API__)
+/* f: name of file to get info on, tmzip: return value: access,
+   modification and creation times, dt: dostime */
+static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
+  (void)dt;
+  int ret=0;
+  struct stat s;        /* results of stat() */
+  struct tm* filedate;
+  time_t tm_t=0;
+
+  if (strcmp(f,"-")!=0)
+  {
+    char name[MAXFILENAME+1];
+    size_t len = strlen(f);
+    if (len > MAXFILENAME)
+      len = MAXFILENAME;
+
+    strncpy(name, f,MAXFILENAME-1);
+    /* strncpy doesn't append the trailing NULL, of the string is too long. */
+    name[ MAXFILENAME ] = '\0';
+
+    if (name[len - 1] == '/')
+      name[len - 1] = '\0';
+    /* not all systems allow stat'ing a file with / appended */
+    if (stat(name,&s)==0)
+    {
+      tm_t = s.st_mtime;
+      ret = 1;
+    }
+  }
+  filedate = localtime(&tm_t);
+
+  tmzip->tm_sec  = filedate->tm_sec;
+  tmzip->tm_min  = filedate->tm_min;
+  tmzip->tm_hour = filedate->tm_hour;
+  tmzip->tm_mday = filedate->tm_mday;
+  tmzip->tm_mon  = filedate->tm_mon ;
+  tmzip->tm_year = filedate->tm_year;
+
+  return ret;
+}
+#else
+/* f: name of file to get info on, tmzip: return value: access,
+   modification and creation times, dt: dostime */
+static int filetime(const char *f, tm_zip *tmzip, uLong *dt) {
+    (void)f;
+    (void)tmzip;
+    (void)dt;
+    return 0;
+}
+#endif
+
+
+
+
+static int check_exist_file(const char* filename) {
+    FILE* ftestexist;
+    int ret = 1;
+    ftestexist = FOPEN_FUNC(filename,"rb");
+    if (ftestexist==NULL)
+        ret = 0;
+    else
+        fclose(ftestexist);
+    return ret;
+}
+
+static void do_banner(void) {
+    printf("MiniZip 1.1, demo of zLib + MiniZip64 package, written by Gilles Vollant\n");
+    printf("more info on MiniZip at http://www.winimage.com/zLibDll/minizip.html\n\n");
+}
+
+static void do_help(void) {
+    printf("Usage : minizip [-o] [-a] [-0 to -9] [-p password] [-j] file.zip [files_to_add]\n\n" \
+           "  -o  Overwrite existing file.zip\n" \
+           "  -a  Append to existing file.zip\n" \
+           "  -0  Store only\n" \
+           "  -1  Compress faster\n" \
+           "  -9  Compress better\n\n" \
+           "  -j  exclude path. store only the file name.\n\n");
+}
+
+/* calculate the CRC32 of a file,
+   because to encrypt a file, we need known the CRC32 of the file before */
+static int getFileCrc(const char* filenameinzip, void* buf, unsigned long size_buf, unsigned long* result_crc) {
+   unsigned long calculate_crc=0;
+   int err=ZIP_OK;
+   FILE * fin = FOPEN_FUNC(filenameinzip,"rb");
+
+   unsigned long size_read = 0;
+   /* unsigned long total_read = 0; */
+   if (fin==NULL)
+   {
+       err = ZIP_ERRNO;
+   }
+
+    if (err == ZIP_OK)
+        do
+        {
+            err = ZIP_OK;
+            size_read = (unsigned long)fread(buf,1,size_buf,fin);
+            if (size_read < size_buf)
+                if (feof(fin)==0)
+            {
+                printf("error in reading %s\n",filenameinzip);
+                err = ZIP_ERRNO;
+            }
+
+            if (size_read>0)
+                calculate_crc = crc32_z(calculate_crc,buf,size_read);
+            /* total_read += size_read; */
+
+        } while ((err == ZIP_OK) && (size_read>0));
+
+    if (fin)
+        fclose(fin);
+
+    *result_crc=calculate_crc;
+    printf("file %s crc %lx\n", filenameinzip, calculate_crc);
+    return err;
+}
+
+static int isLargeFile(const char* filename) {
+  int largeFile = 0;
+  ZPOS64_T pos = 0;
+  FILE* pFile = FOPEN_FUNC(filename, "rb");
+
+  if(pFile != NULL)
+  {
+    FSEEKO_FUNC(pFile, 0, SEEK_END);
+    pos = (ZPOS64_T)FTELLO_FUNC(pFile);
+
+                printf("File : %s is %"PUI64" bytes\n", filename, pos);
+
+    if(pos >= 0xffffffff)
+     largeFile = 1;
+
+                fclose(pFile);
+  }
+
+ return largeFile;
+}
+
+int main(int argc, char *argv[]) {
+    int i;
+    int opt_overwrite=0;
+    int opt_compress_level=Z_DEFAULT_COMPRESSION;
+    int opt_exclude_path=0;
+    int zipfilenamearg = 0;
+    char filename_try[MAXFILENAME+16];
+    int zipok;
+    int err=0;
+    unsigned long size_buf=0;
+    void* buf=NULL;
+    const char* password=NULL;
+
+
+    do_banner();
+    if (argc==1)
+    {
+        do_help();
+        return 0;
+    }
+    else
+    {
+        for (i=1;i<argc;i++)
+        {
+            if ((*argv[i])=='-')
+            {
+                const char *p=argv[i]+1;
+
+                while ((*p)!='\0')
+                {
+                    char c=*(p++);
+                    if ((c=='o') || (c=='O'))
+                        opt_overwrite = 1;
+                    if ((c=='a') || (c=='A'))
+                        opt_overwrite = 2;
+                    if ((c>='0') && (c<='9'))
+                        opt_compress_level = c-'0';
+                    if ((c=='j') || (c=='J'))
+                        opt_exclude_path = 1;
+
+                    if (((c=='p') || (c=='P')) && (i+1<argc))
+                    {
+                        password=argv[i+1];
+                        i++;
+                    }
+                }
+            }
+            else
+            {
+                if (zipfilenamearg == 0)
+                {
+                    zipfilenamearg = i ;
+                }
+            }
+        }
+    }
+
+    size_buf = WRITEBUFFERSIZE;
+    buf = (void*)malloc(size_buf);
+    if (buf==NULL)
+    {
+        printf("Error allocating memory\n");
+        return ZIP_INTERNALERROR;
+    }
+
+    if (zipfilenamearg==0)
+    {
+        zipok=0;
+    }
+    else
+    {
+        int len;
+        int dot_found=0;
+
+        zipok = 1 ;
+        strncpy(filename_try, argv[zipfilenamearg],MAXFILENAME-1);
+        /* strncpy doesn't append the trailing NULL, of the string is too long. */
+        filename_try[ MAXFILENAME ] = '\0';
+
+        len=(int)strlen(filename_try);
+        for (i=0;i<len;i++)
+            if (filename_try[i]=='.')
+                dot_found=1;
+
+        if (dot_found==0)
+            strcat(filename_try,".zip");
+
+        if (opt_overwrite==2)
+        {
+            /* if the file don't exist, we not append file */
+            if (check_exist_file(filename_try)==0)
+                opt_overwrite=1;
+        }
+        else
+        if (opt_overwrite==0)
+            if (check_exist_file(filename_try)!=0)
+            {
+                char rep=0;
+                do
+                {
+                    char answer[128];
+                    int ret;
+                    printf("The file %s exists. Overwrite ? [y]es, [n]o, [a]ppend : ",filename_try);
+                    ret = scanf("%1s",answer);
+                    if (ret != 1)
+                    {
+                       exit(EXIT_FAILURE);
+                    }
+                    rep = answer[0] ;
+                    if ((rep>='a') && (rep<='z'))
+                        rep -= 0x20;
+                }
+                while ((rep!='Y') && (rep!='N') && (rep!='A'));
+                if (rep=='N')
+                    zipok = 0;
+                if (rep=='A')
+                    opt_overwrite = 2;
+            }
+    }
+
+    if (zipok==1)
+    {
+        zipFile zf;
+        int errclose;
+#        ifdef USEWIN32IOAPI
+        zlib_filefunc64_def ffunc;
+        fill_win32_filefunc64A(&ffunc);
+        zf = zipOpen2_64(filename_try,(opt_overwrite==2) ? 2 : 0,NULL,&ffunc);
+#        else
+        zf = zipOpen64(filename_try,(opt_overwrite==2) ? 2 : 0);
+#        endif
+
+        if (zf == NULL)
+        {
+            printf("error opening %s\n",filename_try);
+            err= ZIP_ERRNO;
+        }
+        else
+            printf("creating %s\n",filename_try);
+
+        for (i=zipfilenamearg+1;(i<argc) && (err==ZIP_OK);i++)
+        {
+            if (!((((*(argv[i]))=='-') || ((*(argv[i]))=='/')) &&
+                  ((argv[i][1]=='o') || (argv[i][1]=='O') ||
+                   (argv[i][1]=='a') || (argv[i][1]=='A') ||
+                   (argv[i][1]=='p') || (argv[i][1]=='P') ||
+                   ((argv[i][1]>='0') && (argv[i][1]<='9'))) &&
+                  (strlen(argv[i]) == 2)))
+            {
+                FILE * fin = NULL;
+                size_t size_read;
+                const char* filenameinzip = argv[i];
+                const char *savefilenameinzip;
+                zip_fileinfo zi;
+                unsigned long crcFile=0;
+                int zip64 = 0;
+
+                zi.tmz_date.tm_sec = zi.tmz_date.tm_min = zi.tmz_date.tm_hour =
+                zi.tmz_date.tm_mday = zi.tmz_date.tm_mon = zi.tmz_date.tm_year = 0;
+                zi.dosDate = 0;
+                zi.internal_fa = 0;
+                zi.external_fa = 0;
+                filetime(filenameinzip,&zi.tmz_date,&zi.dosDate);
+
+/*
+                err = zipOpenNewFileInZip(zf,filenameinzip,&zi,
+                                 NULL,0,NULL,0,NULL / * comment * /,
+                                 (opt_compress_level != 0) ? Z_DEFLATED : 0,
+                                 opt_compress_level);
+*/
+                if ((password != NULL) && (err==ZIP_OK))
+                    err = getFileCrc(filenameinzip,buf,size_buf,&crcFile);
+
+                zip64 = isLargeFile(filenameinzip);
+
+                                                         /* The path name saved, should not include a leading slash. */
+               /*if it did, windows/xp and dynazip couldn't read the zip file. */
+                 savefilenameinzip = filenameinzip;
+                 while( savefilenameinzip[0] == '\\' || savefilenameinzip[0] == '/' )
+                 {
+                     savefilenameinzip++;
+                 }
+
+                 /*should the zip file contain any path at all?*/
+                 if( opt_exclude_path )
+                 {
+                     const char *tmpptr;
+                     const char *lastslash = 0;
+                     for( tmpptr = savefilenameinzip; *tmpptr; tmpptr++)
+                     {
+                         if( *tmpptr == '\\' || *tmpptr == '/')
+                         {
+                             lastslash = tmpptr;
+                         }
+                     }
+                     if( lastslash != NULL )
+                     {
+                         savefilenameinzip = lastslash+1; // base filename follows last slash.
+                     }
+                 }
+
+                 /**/
+                err = zipOpenNewFileInZip3_64(zf,savefilenameinzip,&zi,
+                                 NULL,0,NULL,0,NULL /* comment*/,
+                                 (opt_compress_level != 0) ? Z_DEFLATED : 0,
+                                 opt_compress_level,0,
+                                 /* -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY, */
+                                 -MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY,
+                                 password,crcFile, zip64);
+
+                if (err != ZIP_OK)
+                    printf("error in opening %s in zipfile\n",filenameinzip);
+                else
+                {
+                    fin = FOPEN_FUNC(filenameinzip,"rb");
+                    if (fin==NULL)
+                    {
+                        err=ZIP_ERRNO;
+                        printf("error in opening %s for reading\n",filenameinzip);
+                    }
+                }
+
+                if (err == ZIP_OK)
+                    do
+                    {
+                        err = ZIP_OK;
+                        size_read = fread(buf,1,size_buf,fin);
+                        if (size_read < size_buf)
+                            if (feof(fin)==0)
+                        {
+                            printf("error in reading %s\n",filenameinzip);
+                            err = ZIP_ERRNO;
+                        }
+
+                        if (size_read>0)
+                        {
+                            err = zipWriteInFileInZip (zf,buf,(unsigned)size_read);
+                            if (err<0)
+                            {
+                                printf("error in writing %s in the zipfile\n",
+                                                 filenameinzip);
+                            }
+
+                        }
+                    } while ((err == ZIP_OK) && (size_read>0));
+
+                if (fin)
+                    fclose(fin);
+
+                if (err<0)
+                    err=ZIP_ERRNO;
+                else
+                {
+                    err = zipCloseFileInZip(zf);
+                    if (err!=ZIP_OK)
+                        printf("error in closing %s in the zipfile\n",
+                                    filenameinzip);
+                }
+            }
+        }
+        errclose = zipClose(zf,NULL);
+        if (errclose != ZIP_OK)
+            printf("error in closing %s\n",filename_try);
+    }
+    else
+    {
+       do_help();
+    }
+
+    free(buf);
+    return 0;
+}

deps/v8/third_party/zlib/contrib/minizip/minizip.md

@@ -0,0 +1,9 @@
+Minizip is a library provided by //third_party/zlib [1]. Its zip and unzip
+tools can be built in a developer checkout for testing purposes with:
+
+```shell
+  autoninja -C out/Release minizip_bin
+  autoninja -C out/Release miniunz_bin
+```
+
+[1] Upstream is https://github.com/madler/zlib/tree/master/contrib/minizip

deps/v8/third_party/zlib/contrib/minizip/mztools.c

@@ -0,0 +1,288 @@
+/*
+  Additional tools for Minizip
+  Code: Xavier Roche '2004
+  License: Same as ZLIB (www.gzip.org)
+*/
+
+/* Code */
+#ifndef _CRT_SECURE_NO_WARNINGS
+#  define _CRT_SECURE_NO_WARNINGS
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "zlib.h"
+#include "unzip.h"
+
+#define READ_8(adr)  ((unsigned char)*(adr))
+#define READ_16(adr) ( READ_8(adr) | (READ_8(adr+1) << 8) )
+#define READ_32(adr) ( READ_16(adr) | (READ_16((adr)+2) << 16) )
+
+#define WRITE_8(buff, n) do { \
+  *((unsigned char*)(buff)) = (unsigned char) ((n) & 0xff); \
+} while(0)
+#define WRITE_16(buff, n) do { \
+  WRITE_8((unsigned char*)(buff), n); \
+  WRITE_8(((unsigned char*)(buff)) + 1, (n) >> 8); \
+} while(0)
+#define WRITE_32(buff, n) do { \
+  WRITE_16((unsigned char*)(buff), (n) & 0xffff); \
+  WRITE_16((unsigned char*)(buff) + 2, (n) >> 16); \
+} while(0)
+
+extern int ZEXPORT unzRepair(const char* file, const char* fileOut, const char* fileOutTmp, uLong* nRecovered, uLong* bytesRecovered) {
+  int err = Z_OK;
+  FILE* fpZip = fopen(file, "rb");
+  FILE* fpOut = fopen(fileOut, "wb");
+  FILE* fpOutCD = fopen(fileOutTmp, "wb");
+  if (fpZip != NULL &&  fpOut != NULL) {
+    int entries = 0;
+    uLong totalBytes = 0;
+    char header[30];
+    char filename[1024];
+    char extra[1024];
+    int offset = 0;
+    int offsetCD = 0;
+    while ( fread(header, 1, 30, fpZip) == 30 ) {
+      int currentOffset = offset;
+
+      /* File entry */
+      if (READ_32(header) == 0x04034b50) {
+        unsigned int version = READ_16(header + 4);
+        unsigned int gpflag = READ_16(header + 6);
+        unsigned int method = READ_16(header + 8);
+        unsigned int filetime = READ_16(header + 10);
+        unsigned int filedate = READ_16(header + 12);
+        unsigned int crc = READ_32(header + 14); /* crc */
+        unsigned int cpsize = READ_32(header + 18); /* compressed size */
+        unsigned int uncpsize = READ_32(header + 22); /* uncompressed sz */
+        unsigned int fnsize = READ_16(header + 26); /* file name length */
+        unsigned int extsize = READ_16(header + 28); /* extra field length */
+        filename[0] = extra[0] = '\0';
+
+        /* Header */
+        if (fwrite(header, 1, 30, fpOut) == 30) {
+          offset += 30;
+        } else {
+          err = Z_ERRNO;
+          break;
+        }
+
+        /* Filename */
+        if (fnsize > 0) {
+          if (fnsize < sizeof(filename)) {
+            if (fread(filename, 1, fnsize, fpZip) == fnsize) {
+                if (fwrite(filename, 1, fnsize, fpOut) == fnsize) {
+                offset += fnsize;
+              } else {
+                err = Z_ERRNO;
+                break;
+              }
+            } else {
+              err = Z_ERRNO;
+              break;
+            }
+          } else {
+            err = Z_ERRNO;
+            break;
+          }
+        } else {
+          err = Z_STREAM_ERROR;
+          break;
+        }
+
+        /* Extra field */
+        if (extsize > 0) {
+          if (extsize < sizeof(extra)) {
+            if (fread(extra, 1, extsize, fpZip) == extsize) {
+              if (fwrite(extra, 1, extsize, fpOut) == extsize) {
+                offset += extsize;
+                } else {
+                err = Z_ERRNO;
+                break;
+              }
+            } else {
+              err = Z_ERRNO;
+              break;
+            }
+          } else {
+            err = Z_ERRNO;
+            break;
+          }
+        }
+
+        /* Data */
+        {
+          int dataSize = cpsize;
+          if (dataSize == 0) {
+            dataSize = uncpsize;
+          }
+          if (dataSize > 0) {
+            char* data = malloc(dataSize);
+            if (data != NULL) {
+              if ((int)fread(data, 1, dataSize, fpZip) == dataSize) {
+                if ((int)fwrite(data, 1, dataSize, fpOut) == dataSize) {
+                  offset += dataSize;
+                  totalBytes += dataSize;
+                } else {
+                  err = Z_ERRNO;
+                }
+              } else {
+                err = Z_ERRNO;
+              }
+              free(data);
+              if (err != Z_OK) {
+                break;
+              }
+            } else {
+              err = Z_MEM_ERROR;
+              break;
+            }
+          }
+        }
+
+        /* Central directory entry */
+        {
+          char central[46];
+          char* comment = "";
+          int comsize = (int) strlen(comment);
+          WRITE_32(central, 0x02014b50);
+          WRITE_16(central + 4, version);
+          WRITE_16(central + 6, version);
+          WRITE_16(central + 8, gpflag);
+          WRITE_16(central + 10, method);
+          WRITE_16(central + 12, filetime);
+          WRITE_16(central + 14, filedate);
+          WRITE_32(central + 16, crc);
+          WRITE_32(central + 20, cpsize);
+          WRITE_32(central + 24, uncpsize);
+          WRITE_16(central + 28, fnsize);
+          WRITE_16(central + 30, extsize);
+          WRITE_16(central + 32, comsize);
+          WRITE_16(central + 34, 0);    /* disk # */
+          WRITE_16(central + 36, 0);    /* int attrb */
+          WRITE_32(central + 38, 0);    /* ext attrb */
+          WRITE_32(central + 42, currentOffset);
+          /* Header */
+          if (fwrite(central, 1, 46, fpOutCD) == 46) {
+            offsetCD += 46;
+
+            /* Filename */
+            if (fnsize > 0) {
+              if (fwrite(filename, 1, fnsize, fpOutCD) == fnsize) {
+                offsetCD += fnsize;
+              } else {
+                err = Z_ERRNO;
+                break;
+              }
+            } else {
+              err = Z_STREAM_ERROR;
+              break;
+            }
+
+            /* Extra field */
+            if (extsize > 0) {
+              if (fwrite(extra, 1, extsize, fpOutCD) == extsize) {
+                offsetCD += extsize;
+              } else {
+                err = Z_ERRNO;
+                break;
+              }
+            }
+
+            /* Comment field */
+            if (comsize > 0) {
+              if ((int)fwrite(comment, 1, comsize, fpOutCD) == comsize) {
+                offsetCD += comsize;
+              } else {
+                err = Z_ERRNO;
+                break;
+              }
+            }
+
+
+          } else {
+            err = Z_ERRNO;
+            break;
+          }
+        }
+
+        /* Success */
+        entries++;
+
+      } else {
+        break;
+      }
+    }
+
+    /* Final central directory  */
+    {
+      int entriesZip = entries;
+      char end[22];
+      char* comment = ""; // "ZIP File recovered by zlib/minizip/mztools";
+      int comsize = (int) strlen(comment);
+      if (entriesZip > 0xffff) {
+        entriesZip = 0xffff;
+      }
+      WRITE_32(end, 0x06054b50);
+      WRITE_16(end + 4, 0);         /* disk # */
+      WRITE_16(end + 6, 0);         /* disk # */
+      WRITE_16(end + 8, entriesZip);        /* hack */
+      WRITE_16(end + 10, entriesZip);       /* hack */
+      WRITE_32(end + 12, offsetCD);         /* size of CD */
+      WRITE_32(end + 16, offset);           /* offset to CD */
+      WRITE_16(end + 20, comsize);          /* comment */
+
+      /* Header */
+      if (fwrite(end, 1, 22, fpOutCD) == 22) {
+
+        /* Comment field */
+        if (comsize > 0) {
+          if ((int)fwrite(comment, 1, comsize, fpOutCD) != comsize) {
+            err = Z_ERRNO;
+          }
+        }
+
+      } else {
+        err = Z_ERRNO;
+      }
+    }
+
+    /* Final merge (file + central directory) */
+    fclose(fpOutCD);
+    if (err == Z_OK) {
+      fpOutCD = fopen(fileOutTmp, "rb");
+      if (fpOutCD != NULL) {
+        int nRead;
+        char buffer[8192];
+        while ( (nRead = (int)fread(buffer, 1, sizeof(buffer), fpOutCD)) > 0) {
+          if ((int)fwrite(buffer, 1, nRead, fpOut) != nRead) {
+            err = Z_ERRNO;
+            break;
+          }
+        }
+        fclose(fpOutCD);
+      }
+    }
+
+    /* Close */
+    fclose(fpZip);
+    fclose(fpOut);
+
+    /* Wipe temporary file */
+    (void)remove(fileOutTmp);
+
+    /* Number of recovered entries */
+    if (err == Z_OK) {
+      if (nRecovered != NULL) {
+        *nRecovered = entries;
+      }
+      if (bytesRecovered != NULL) {
+        *bytesRecovered = totalBytes;
+      }
+    }
+  } else {
+    err = Z_STREAM_ERROR;
+  }
+  return err;
+}

deps/v8/third_party/zlib/contrib/minizip/mztools.h

@@ -0,0 +1,37 @@
+/*
+  Additional tools for Minizip
+  Code: Xavier Roche '2004
+  License: Same as ZLIB (www.gzip.org)
+*/
+
+#ifndef _zip_tools_H
+#define _zip_tools_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef _ZLIB_H
+#include "zlib.h"
+#endif
+
+#include "unzip.h"
+
+/* Repair a ZIP file (missing central directory)
+   file: file to recover
+   fileOut: output file after recovery
+   fileOutTmp: temporary file name used for recovery
+*/
+extern int ZEXPORT unzRepair(const char* file,
+                             const char* fileOut,
+                             const char* fileOutTmp,
+                             uLong* nRecovered,
+                             uLong* bytesRecovered);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif

deps/v8/third_party/zlib/contrib/minizip/skipset.h

@@ -0,0 +1,361 @@
+// skipset.h -- set operations using a skiplist
+// Copyright (C) 2024 Mark Adler
+// See MiniZip_info.txt for the license.
+
+// This implements a skiplist set, i.e. just keys, no data, with ~O(log n) time
+// insert and search operations. The application defines the type of a key, and
+// provides a function to compare two keys.
+
+// This header is not definitions of functions found in another source file --
+// it creates the set functions, with the application's key type, right where
+// the #include is. Before this header is #included, these must be defined:
+//
+// 1. A macro or typedef for set_key_t, the type of a key.
+// 2. A macro or function set_cmp(a, b) to compare two keys. The return values
+//    are < 0 for a < b, 0 for a == b, and > 0 for a > b.
+// 3. A macro or function set_drop(s, k) to release the key k's resources, if
+//    any, when doing a set_end() or set_clear(). s is a pointer to the set
+//    that key is in, for use with set_free() if desired.
+//
+// Example usage:
+//
+//      typedef int set_key_t;
+//      #define set_cmp(a, b) ((a) < (b) ? -1 : (a) == (b) ? 0 : 1)
+//      #define set_drop(s, k)
+//      #include "skipset.h"
+//
+//      int test(void) {        // return 0: good, 1: bad, -1: out of memory
+//          set_t set;
+//          if (setjmp(set.env))
+//              return -1;
+//          set_start(&set);
+//          set_insert(&set, 2);
+//          set_insert(&set, 1);
+//          set_insert(&set, 7);
+//          int bad = !set_found(&set, 2);
+//          bad = bad || set_found(&set, 5);
+//          set_end(&set);
+//          return bad;
+//      }
+//
+// Interface summary (see more details below):
+// - set_t is the type of the set being operated on (a set_t pointer is passed)
+// - set_start() initializes a new, empty set (initialize set.env first)
+// - set_insert() inserts a new key into the set, or not if it's already there
+// - set_found() determines whether or not a key is in the set
+// - set_end() ends the use of the set, freeing all memory
+// - set_clear() empties the set, equivalent to set_end() and then set_start()
+// - set_ok() checks if set appears to be usable, i.e. started and not ended
+//
+// Auxiliary functions available to the application:
+// - set_alloc() allocates memory with optional tracking (#define SET_TRACK)
+// - set_free() deallocates memory allocated by set_alloc()
+// - set_rand() returns 32 random bits (seeded by set_start())
+
+#ifndef SKIPSET_H
+#define SKIPSET_H
+
+#include <stdlib.h>     // realloc(), free(), NULL, size_t
+#include <stddef.h>     // ptrdiff_t
+#include <setjmp.h>     // jmp_buf, longjmp()
+#include <errno.h>      // ENOMEM
+#include <time.h>       // time(), clock()
+#include <assert.h>     // assert.h
+#include "ints.h"       // i16_t, ui32_t, ui64_t
+
+// Structures and functions below noted as "--private--" should not be used by
+// the application. set_t is partially private and partially public -- see the
+// comments there.
+
+// There is no POSIX random() in MSVC, and rand() is awful. For portability, we
+// cannot rely on a library function for random numbers. Instead we use the
+// fast and effective algorithm below, invented by Melissa O'Neill.
+
+// *Really* minimal PCG32 code / (c) 2014 M.E. O'Neill / www.pcg-random.org
+// Licensed under Apache License 2.0 (NO WARRANTY, etc. see website)
+// --private-- Random number generator state.
+typedef struct {
+    ui64_t state;       // 64-bit generator state
+    ui64_t inc;         // 63-bit sequence id
+} set_rand_t;
+// --private-- Initialize the state *gen using seed and seq. seed seeds the
+// advancing 64-bit state. seq is a sequence selection constant.
+void set_seed(set_rand_t *gen, ui64_t seed, ui64_t seq) {
+    gen->inc = (seq << 1) | 1;
+    gen->state = (seed + gen->inc) * 6364136223846793005ULL + gen->inc;
+}
+// Return 32 random bits, advancing the state *gen.
+ui32_t set_rand(set_rand_t *gen) {
+    ui64_t state = gen->state;
+    gen->state = state * 6364136223846793005ULL + gen->inc;
+    ui32_t mix = (ui32_t)(((state >> 18) ^ state) >> 27);
+    int rot = state >> 59;
+    return (mix >> rot) | (mix << ((-rot) & 31));
+}
+// End of PCG32 code.
+
+// --private-- Linked-list node.
+typedef struct set_node_s set_node_t;
+struct set_node_s {
+    set_key_t key;          // the key (not used for head or path)
+    i16_t size;             // number of allocated pointers in right[]
+    i16_t fill;             // number of pointers in right[] filled in
+    set_node_t **right;     // pointer for each level, each to the right
+};
+
+// A set. The application sets env, may use gen with set_rand(), and may read
+// allocs and memory. The remaining variables are --private-- .
+typedef struct set_s {
+    set_node_t *head;       // skiplist head -- no key, just links
+    set_node_t *path;       // right[] is path to key from set_found()
+    set_node_t *node;       // node under construction, in case of longjmp()
+    i16_t depth;            // maximum depth of the skiplist
+    ui64_t ran;             // a precious trove of random bits
+    set_rand_t gen;         // random number generator state
+    jmp_buf env;            // setjmp() environment for allocation errors
+#ifdef SET_TRACK
+    size_t allocs;          // number of allocations
+    size_t memory;          // total amount of allocated memory (>= requests)
+#endif
+} set_t;
+
+// Memory allocation and deallocation. set_alloc(set, ptr, size) returns a
+// pointer to an allocation of size bytes if ptr is NULL, or the previous
+// allocation ptr resized to size bytes. set_alloc() will never return NULL.
+// set_free(set, ptr) frees an allocation created by set_alloc(). These may be
+// used by the application. e.g. if allocation tracking is desired.
+#ifdef SET_TRACK
+// Track the number of allocations and the total backing memory size.
+#  if defined(_WIN32)
+#    include <malloc.h>
+#    define SET_ALLOC_SIZE(ptr) _msize(ptr)
+#  elif defined(__MACH__)
+#    include <malloc/malloc.h>
+#    define SET_ALLOC_SIZE(ptr) malloc_size(ptr)
+#  elif defined(__linux__)
+#    include <malloc.h>
+#    define SET_ALLOC_SIZE(ptr) malloc_usable_size(ptr)
+#  elif defined(__FreeBSD__)
+#    include <malloc_np.h>
+#    define SET_ALLOC_SIZE(ptr) malloc_usable_size(ptr)
+#  elif defined(__NetBSD__)
+#    include <jemalloc/jemalloc.h>
+#    define SET_ALLOC_SIZE(ptr) malloc_usable_size(ptr)
+#  else     // e.g. OpenBSD
+#    define SET_ALLOC_SIZE(ptr) 0
+#  endif
+// With tracking.
+void *set_alloc(set_t *set, void *ptr, size_t size) {
+    size_t had = ptr == NULL ? 0 : SET_ALLOC_SIZE(ptr);
+    void *mem = realloc(ptr, size);
+    if (mem == NULL)
+        longjmp(set->env, ENOMEM);
+    set->allocs += ptr == NULL;
+    set->memory += SET_ALLOC_SIZE(mem) - had;
+    return mem;
+}
+void set_free(set_t *set, void *ptr) {
+    if (ptr != NULL) {
+        set->allocs--;
+        set->memory -= SET_ALLOC_SIZE(ptr);
+        free(ptr);
+    }
+}
+#else
+// Without tracking.
+void *set_alloc(set_t *set, void *ptr, size_t size) {
+    void *mem = realloc(ptr, size);
+    if (mem == NULL)
+        longjmp(set->env, ENOMEM);
+    return mem;
+}
+void set_free(set_t *set, void *ptr) {
+    (void)set;
+    free(ptr);
+}
+#endif
+
+// --private-- Grow node's array right[] as needed to be able to hold at least
+// want links. If fill is true, assure that the first want links are filled in,
+// setting them to set->head if not previously filled in. Otherwise it is
+// assumed that the first want links are about to be filled in.
+void set_grow(set_t *set, set_node_t *node, int want, int fill) {
+    if (node->size < want) {
+        int more = node->size ? node->size : 1;
+        while (more < want)
+            more <<= 1;
+        node->right = set_alloc(set, node->right, more * sizeof(set_node_t *));
+        node->size = (i16_t)more;
+    }
+    int i;
+    if (fill)
+        for (i = node->fill; i < want; i++)
+            node->right[i] = set->head;
+    node->fill = (i16_t)want;
+}
+
+// --private-- Return a new node. key is left uninitialized.
+set_node_t *set_node(set_t *set) {
+    set_node_t *node = set_alloc(set, NULL, sizeof(set_node_t));
+    node->size = 0;
+    node->fill = 0;
+    node->right = NULL;
+    return node;
+}
+
+// --private-- Free the list linked from head, along with the keys.
+void set_sweep(set_t *set) {
+    set_node_t *step = set->head->right[0];
+    while (step != set->head) {
+        set_node_t *next = step->right[0];      // save link to next node
+        set_drop(set, step->key);
+        set_free(set, step->right);
+        set_free(set, step);
+        step = next;
+    }
+}
+
+// Initialize a new set. set->env must be initialized using setjmp() before
+// set_start() is called. A longjmp(set->env, ENOMEM) will be used to handle a
+// memory allocation failure during any of the operations. (See setjmp.h and
+// errno.h.) The set can still be used if this happens, assuming that it didn't
+// happen during set_start(). Whether set_start() completed or not, set_end()
+// can be used to free the set's memory after a longjmp().
+void set_start(set_t *set) {
+#ifdef SET_TRACK
+    set->allocs = 0;
+    set->memory = 0;
+#endif
+    set->head = set->path = set->node = NULL;   // in case set_node() fails
+    set->path = set_node(set);
+    set->head = set_node(set);
+    set_grow(set, set->head, 1, 1); // one link back to head for an empty set
+    *(unsigned char *)&set->head->key = 137;    // set id
+    set->depth = 0;
+    set_seed(&set->gen, ((ui64_t)(ptrdiff_t)set << 32) ^
+                        ((ui64_t)time(NULL) << 12) ^ clock(), 0);
+    set->ran = 1;
+}
+
+// Return true if *set appears to be in a usable state. If *set has been zeroed
+// out, then set_ok(set) will be false and set_end(set) will be safe.
+int set_ok(set_t *set) {
+    return set->head != NULL &&
+           set->head->right != NULL &&
+           *(unsigned char *)&set->head->key == 137;
+}
+
+// Empty the set. This frees the memory used for the previous set contents.
+// After set_clear(), *set is ready for use, as if after a set_start().
+void set_clear(set_t *set) {
+    assert(set_ok(set) && "improper use");
+
+    // Free all the keys and their nodes.
+    set_sweep(set);
+
+    // Leave the head and path allocations as is. Clear their contents, with
+    // head pointing to itself and setting depth to zero, for an empty set.
+    set->head->right[0] = set->head;
+    set->head->fill = 1;
+    set->path->fill = 0;
+    set->depth = 0;
+}
+
+// Done using the set -- free all allocations. The only operation on *set
+// permitted after this is set_start(). Though another set_end() would do no
+// harm. This can be done at any time after a set_start(), or after a longjmp()
+// on any allocation failure, including during a set_start().
+void set_end(set_t *set) {
+    if (set->head != NULL) {
+        // Empty the set and free the head node.
+        if (set->head->right != NULL) {
+            set_sweep(set);
+            set_free(set, set->head->right);
+        }
+        set_free(set, set->head);
+        set->head = NULL;
+    }
+    if (set->path != NULL) {
+        // Free the path work area.
+        set_free(set, set->path->right);
+        set_free(set, set->path);
+        set->path = NULL;
+    }
+    if (set->node != NULL) {
+        // Free the node that was under construction when longjmp() hit.
+        set_drop(set, set->node->key);
+        set_free(set, set->node->right);
+        set_free(set, set->node);
+        set->node = NULL;
+    }
+}
+
+// Look for key. Return 1 if found or 0 if not. This also puts the path to get
+// there in set->path, for use by set_insert().
+int set_found(set_t *set, set_key_t key) {
+    assert(set_ok(set) && "improper use");
+
+    // Start at depth and work down and right as determined by key comparisons.
+    set_node_t *head = set->head, *here = head;
+    int i = set->depth;
+    set_grow(set, set->path, i + 1, 0);
+    do {
+        while (here->right[i] != head &&
+               set_cmp(here->right[i]->key, key) < 0)
+            here = here->right[i];
+        set->path->right[i] = here;
+    } while (i--);
+
+    // See if the key matches.
+    here = here->right[0];
+    return here != head && set_cmp(here->key, key) == 0;
+}
+
+// Insert the key key. Return 0 on success, or 1 if key is already in the set.
+int set_insert(set_t *set, set_key_t key) {
+    assert(set_ok(set) && "improper use");
+
+    if (set_found(set, key))
+        // That key is already in the set.
+        return 1;
+
+    // Randomly generate a new level-- level 0 with probability 1/2, 1 with
+    // probability 1/4, 2 with probability 1/8, etc.
+    int level = 0;
+    for (;;) {
+        if (set->ran == 1)
+            // Ran out. Get another 32 random bits.
+            set->ran = set_rand(&set->gen) | (1ULL << 32);
+        int bit = set->ran & 1;
+        set->ran >>= 1;
+        if (bit)
+            break;
+        assert(level < 32767 &&
+               "Overhead, without any fuss, the stars were going out.");
+        level++;
+    }
+    if (level > set->depth) {
+        // The maximum depth is now deeper. Update the structures.
+        set_grow(set, set->path, level + 1, 1);
+        set_grow(set, set->head, level + 1, 1);
+        set->depth = (i16_t)level;
+    }
+
+    // Make a new node for the provided key, and insert it in the lists up to
+    // and including level.
+    set->node = set_node(set);
+    set->node->key = key;
+    set_grow(set, set->node, level + 1, 0);
+    int i;
+    for (i = 0; i <= level; i++) {
+        set->node->right[i] = set->path->right[i]->right[i];
+        set->path->right[i]->right[i] = set->node;
+    }
+    set->node = NULL;
+    return 0;
+}
+
+#else
+#error ** another skiplist set already created here
+// Would need to implement a prefix in order to support multiple sets.
+#endif

deps/v8/third_party/zlib/contrib/minizip/unzip.h

@@ -0,0 +1,441 @@
+/* unzip.h -- IO for uncompress .zip files using zlib
+   Version 1.1, February 14h, 2010
+   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications of Unzip for Zip64
+         Copyright (C) 2007-2008 Even Rouault
+
+         Modifications for Zip64 support on both zip and unzip
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+         For more info read MiniZip_info.txt
+
+         ---------------------------------------------------------------------------------
+
+        Condition of use and distribution are the same than zlib :
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  ---------------------------------------------------------------------------------
+
+        Changes
+
+        See header of unzip64.c
+
+*/
+
+#ifndef _unz64_H
+#define _unz64_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef _ZLIB_H
+#include "zlib.h"
+#endif
+
+#ifndef  _ZLIBIOAPI_H
+#include "ioapi.h"
+#endif
+
+#ifdef HAVE_BZIP2
+#include "bzlib.h"
+#endif
+
+#define Z_BZIP2ED 12
+
+#if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
+/* like the STRICT of WIN32, we define a pointer that cannot be converted
+    from (void*) without cast */
+typedef struct TagunzFile__ { int unused; } unzFile__;
+typedef unzFile__ *unzFile;
+#else
+typedef voidp unzFile;
+#endif
+
+
+#define UNZ_OK                          (0)
+#define UNZ_END_OF_LIST_OF_FILE         (-100)
+#define UNZ_ERRNO                       (Z_ERRNO)
+#define UNZ_EOF                         (0)
+#define UNZ_PARAMERROR                  (-102)
+#define UNZ_BADZIPFILE                  (-103)
+#define UNZ_INTERNALERROR               (-104)
+#define UNZ_CRCERROR                    (-105)
+
+/* tm_unz contain date/time info */
+typedef struct tm_unz_s
+{
+    int tm_sec;             /* seconds after the minute - [0,59] */
+    int tm_min;             /* minutes after the hour - [0,59] */
+    int tm_hour;            /* hours since midnight - [0,23] */
+    int tm_mday;            /* day of the month - [1,31] */
+    int tm_mon;             /* months since January - [0,11] */
+    int tm_year;            /* years - [1980..2044] */
+} tm_unz;
+
+/* unz_global_info structure contain global data about the ZIPfile
+   These data comes from the end of central dir */
+typedef struct unz_global_info64_s
+{
+    ZPOS64_T number_entry;         /* total number of entries in
+                                     the central dir on this disk */
+    uLong size_comment;         /* size of the global comment of the zipfile */
+} unz_global_info64;
+
+typedef struct unz_global_info_s
+{
+    uLong number_entry;         /* total number of entries in
+                                     the central dir on this disk */
+    uLong size_comment;         /* size of the global comment of the zipfile */
+} unz_global_info;
+
+/* unz_file_info contain information about a file in the zipfile */
+typedef struct unz_file_info64_s
+{
+    uLong version;              /* version made by                 2 bytes */
+    uLong version_needed;       /* version needed to extract       2 bytes */
+    uLong flag;                 /* general purpose bit flag        2 bytes */
+    uLong compression_method;   /* compression method              2 bytes */
+    uLong dosDate;              /* last mod file date in Dos fmt   4 bytes */
+    uLong crc;                  /* crc-32                          4 bytes */
+    ZPOS64_T compressed_size;   /* compressed size                 8 bytes */
+    ZPOS64_T uncompressed_size; /* uncompressed size               8 bytes */
+    uLong size_filename;        /* filename length                 2 bytes */
+    uLong size_file_extra;      /* extra field length              2 bytes */
+    uLong size_file_comment;    /* file comment length             2 bytes */
+
+    uLong disk_num_start;       /* disk number start               2 bytes */
+    uLong internal_fa;          /* internal file attributes        2 bytes */
+    uLong external_fa;          /* external file attributes        4 bytes */
+
+    tm_unz tmu_date;
+} unz_file_info64;
+
+typedef struct unz_file_info_s
+{
+    uLong version;              /* version made by                 2 bytes */
+    uLong version_needed;       /* version needed to extract       2 bytes */
+    uLong flag;                 /* general purpose bit flag        2 bytes */
+    uLong compression_method;   /* compression method              2 bytes */
+    uLong dosDate;              /* last mod file date in Dos fmt   4 bytes */
+    uLong crc;                  /* crc-32                          4 bytes */
+    uLong compressed_size;      /* compressed size                 4 bytes */
+    uLong uncompressed_size;    /* uncompressed size               4 bytes */
+    uLong size_filename;        /* filename length                 2 bytes */
+    uLong size_file_extra;      /* extra field length              2 bytes */
+    uLong size_file_comment;    /* file comment length             2 bytes */
+
+    uLong disk_num_start;       /* disk number start               2 bytes */
+    uLong internal_fa;          /* internal file attributes        2 bytes */
+    uLong external_fa;          /* external file attributes        4 bytes */
+
+    tm_unz tmu_date;
+} unz_file_info;
+
+extern int ZEXPORT unzStringFileNameCompare(const char* fileName1,
+                                            const char* fileName2,
+                                            int iCaseSensitivity);
+/*
+   Compare two filenames (fileName1,fileName2).
+   If iCaseSensitivity = 1, comparison is case sensitive (like strcmp)
+   If iCaseSensitivity = 2, comparison is not case sensitive (like strcmpi
+                                or strcasecmp)
+   If iCaseSensitivity = 0, case sensitivity is default of your operating system
+    (like 1 on Unix, 2 on Windows)
+*/
+
+
+extern unzFile ZEXPORT unzOpen(const char *path);
+extern unzFile ZEXPORT unzOpen64(const void *path);
+/*
+  Open a Zip file. path contain the full pathname (by example,
+     on a Windows XP computer "c:\\zlib\\zlib113.zip" or on an Unix computer
+     "zlib/zlib113.zip".
+     If the zipfile cannot be opened (file don't exist or in not valid), the
+       return value is NULL.
+     Else, the return value is a unzFile Handle, usable with other function
+       of this unzip package.
+     the "64" function take a const void* pointer, because the path is just the
+       value passed to the open64_file_func callback.
+     Under Windows, if UNICODE is defined, using fill_fopen64_filefunc, the path
+       is a pointer to a wide unicode string (LPCTSTR is LPCWSTR), so const char*
+       does not describe the reality
+*/
+
+
+extern unzFile ZEXPORT unzOpen2(const char *path,
+                                zlib_filefunc_def* pzlib_filefunc_def);
+/*
+   Open a Zip file, like unzOpen, but provide a set of file low level API
+      for read/write the zip file (see ioapi.h)
+*/
+
+extern unzFile ZEXPORT unzOpen2_64(const void *path,
+                                   zlib_filefunc64_def* pzlib_filefunc_def);
+/*
+   Open a Zip file, like unz64Open, but provide a set of file low level API
+      for read/write the zip file (see ioapi.h)
+*/
+
+extern int ZEXPORT unzClose(unzFile file);
+/*
+  Close a ZipFile opened with unzOpen.
+  If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
+    these files MUST be closed with unzCloseCurrentFile before call unzClose.
+  return UNZ_OK if there is no problem. */
+
+extern int ZEXPORT unzGetGlobalInfo(unzFile file,
+                                    unz_global_info *pglobal_info);
+
+extern int ZEXPORT unzGetGlobalInfo64(unzFile file,
+                                      unz_global_info64 *pglobal_info);
+/*
+  Write info about the ZipFile in the *pglobal_info structure.
+  No preparation of the structure is needed
+  return UNZ_OK if there is no problem. */
+
+
+extern int ZEXPORT unzGetGlobalComment(unzFile file,
+                                       char *szComment,
+                                       uLong uSizeBuf);
+/*
+  Get the global comment string of the ZipFile, in the szComment buffer.
+  uSizeBuf is the size of the szComment buffer.
+  return the number of byte copied or an error code <0
+*/
+
+
+/***************************************************************************/
+/* Unzip package allow you browse the directory of the zipfile */
+
+extern int ZEXPORT unzGoToFirstFile(unzFile file);
+/*
+  Set the current file of the zipfile to the first file.
+  return UNZ_OK if there is no problem
+*/
+
+extern int ZEXPORT unzGoToNextFile(unzFile file);
+/*
+  Set the current file of the zipfile to the next file.
+  return UNZ_OK if there is no problem
+  return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
+*/
+
+extern int ZEXPORT unzLocateFile(unzFile file,
+                                 const char *szFileName,
+                                 int iCaseSensitivity);
+/*
+  Try locate the file szFileName in the zipfile.
+  For the iCaseSensitivity signification, see unzStringFileNameCompare
+
+  return value :
+  UNZ_OK if the file is found. It becomes the current file.
+  UNZ_END_OF_LIST_OF_FILE if the file is not found
+*/
+
+
+/* ****************************************** */
+/* Ryan supplied functions */
+/* unz_file_info contain information about a file in the zipfile */
+typedef struct unz_file_pos_s
+{
+    uLong pos_in_zip_directory;   /* offset in zip file directory */
+    uLong num_of_file;            /* # of file */
+} unz_file_pos;
+
+extern int ZEXPORT unzGetFilePos(
+    unzFile file,
+    unz_file_pos* file_pos);
+
+extern int ZEXPORT unzGoToFilePos(
+    unzFile file,
+    unz_file_pos* file_pos);
+
+typedef struct unz64_file_pos_s
+{
+    ZPOS64_T pos_in_zip_directory;   /* offset in zip file directory */
+    ZPOS64_T num_of_file;            /* # of file */
+} unz64_file_pos;
+
+extern int ZEXPORT unzGetFilePos64(
+    unzFile file,
+    unz64_file_pos* file_pos);
+
+extern int ZEXPORT unzGoToFilePos64(
+    unzFile file,
+    const unz64_file_pos* file_pos);
+
+/* ****************************************** */
+
+extern int ZEXPORT unzGetCurrentFileInfo64(unzFile file,
+                                           unz_file_info64 *pfile_info,
+                                           char *szFileName,
+                                           uLong fileNameBufferSize,
+                                           void *extraField,
+                                           uLong extraFieldBufferSize,
+                                           char *szComment,
+                                           uLong commentBufferSize);
+
+extern int ZEXPORT unzGetCurrentFileInfo(unzFile file,
+                                         unz_file_info *pfile_info,
+                                         char *szFileName,
+                                         uLong fileNameBufferSize,
+                                         void *extraField,
+                                         uLong extraFieldBufferSize,
+                                         char *szComment,
+                                         uLong commentBufferSize);
+/*
+  Get Info about the current file
+  if pfile_info!=NULL, the *pfile_info structure will contain some info about
+        the current file
+  if szFileName!=NULL, the filename string will be copied in szFileName
+            (fileNameBufferSize is the size of the buffer)
+  if extraField!=NULL, the extra field information will be copied in extraField
+            (extraFieldBufferSize is the size of the buffer).
+            This is the Central-header version of the extra field
+  if szComment!=NULL, the comment string of the file will be copied in szComment
+            (commentBufferSize is the size of the buffer)
+  The file name and comment will be zero-terminated if there is room in the
+  provided buffer. Otherwise the buffer will contain as much as will fit. If at
+  least 65537 bytes of room is provided, then the result will always be
+  complete and zero-terminated.
+*/
+
+
+/** Addition for GDAL : START */
+
+extern ZPOS64_T ZEXPORT unzGetCurrentFileZStreamPos64(unzFile file);
+
+/** Addition for GDAL : END */
+
+
+/***************************************************************************/
+/* for reading the content of the current zipfile, you can open it, read data
+   from it, and close it (you can close it before reading all the file)
+   */
+
+extern int ZEXPORT unzOpenCurrentFile(unzFile file);
+/*
+  Open for reading data the current file in the zipfile.
+  If there is no error, the return value is UNZ_OK.
+*/
+
+extern int ZEXPORT unzOpenCurrentFilePassword(unzFile file,
+                                              const char* password);
+/*
+  Open for reading data the current file in the zipfile.
+  password is a crypting password
+  If there is no error, the return value is UNZ_OK.
+*/
+
+extern int ZEXPORT unzOpenCurrentFile2(unzFile file,
+                                       int* method,
+                                       int* level,
+                                       int raw);
+/*
+  Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
+    if raw==1
+  *method will receive method of compression, *level will receive level of
+     compression
+  note : you can set level parameter as NULL (if you did not want known level,
+         but you CANNOT set method parameter as NULL
+*/
+
+extern int ZEXPORT unzOpenCurrentFile3(unzFile file,
+                                       int* method,
+                                       int* level,
+                                       int raw,
+                                       const char* password);
+/*
+  Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
+    if raw==1
+  *method will receive method of compression, *level will receive level of
+     compression
+  note : you can set level parameter as NULL (if you did not want known level,
+         but you CANNOT set method parameter as NULL
+*/
+
+
+extern int ZEXPORT unzCloseCurrentFile(unzFile file);
+/*
+  Close the file in zip opened with unzOpenCurrentFile
+  Return UNZ_CRCERROR if all the file was read but the CRC is not good
+*/
+
+extern int ZEXPORT unzReadCurrentFile(unzFile file,
+                                      voidp buf,
+                                      unsigned len);
+/*
+  Read bytes from the current file (opened by unzOpenCurrentFile)
+  buf contain buffer where data must be copied
+  len the size of buf.
+
+  return the number of byte copied if some bytes are copied
+  return 0 if the end of file was reached
+  return <0 with error code if there is an error
+    (UNZ_ERRNO for IO error, or zLib error for uncompress error)
+*/
+
+extern z_off_t ZEXPORT unztell(unzFile file);
+
+extern ZPOS64_T ZEXPORT unztell64(unzFile file);
+/*
+  Give the current position in uncompressed data
+*/
+
+extern int ZEXPORT unzeof(unzFile file);
+/*
+  return 1 if the end of file was reached, 0 elsewhere
+*/
+
+extern int ZEXPORT unzGetLocalExtrafield(unzFile file,
+                                         voidp buf,
+                                         unsigned len);
+/*
+  Read extra field from the current file (opened by unzOpenCurrentFile)
+  This is the local-header version of the extra field (sometimes, there is
+    more info in the local-header version than in the central-header)
+
+  if buf==NULL, it return the size of the local extra field
+
+  if buf!=NULL, len is the size of the buffer, the extra header is copied in
+    buf.
+  the return value is the number of bytes copied in buf, or (if <0)
+    the error code
+*/
+
+/***************************************************************************/
+
+/* Get the current file offset */
+extern ZPOS64_T ZEXPORT unzGetOffset64 (unzFile file);
+extern uLong ZEXPORT unzGetOffset (unzFile file);
+
+/* Set the current file offset */
+extern int ZEXPORT unzSetOffset64 (unzFile file, ZPOS64_T pos);
+extern int ZEXPORT unzSetOffset (unzFile file, uLong pos);
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _unz64_H */

deps/v8/third_party/zlib/contrib/minizip/zip.h

@@ -0,0 +1,370 @@
+/* zip.h -- IO on .zip files using zlib
+   Version 1.1, February 14h, 2010
+   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )
+
+         Modifications for Zip64 support
+         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )
+
+         For more info read MiniZip_info.txt
+
+         ---------------------------------------------------------------------------
+
+   Condition of use and distribution are the same than zlib :
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+        ---------------------------------------------------------------------------
+
+        Changes
+
+        See header of zip.h
+
+ */
+
+#ifndef _zip12_H
+#define _zip12_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//#define HAVE_BZIP2
+
+#ifndef _ZLIB_H
+#include "zlib.h"
+#endif
+
+#ifndef _ZLIBIOAPI_H
+#include "ioapi.h"
+#endif
+
+#ifdef HAVE_BZIP2
+#include "bzlib.h"
+#endif
+
+#define Z_BZIP2ED 12
+
+#if defined(STRICTZIP) || defined(STRICTZIPUNZIP)
+/* like the STRICT of WIN32, we define a pointer that cannot be converted
+    from (void*) without cast */
+typedef struct TagzipFile__ { int unused; } zipFile__;
+typedef zipFile__ *zipFile;
+#else
+typedef voidp zipFile;
+#endif
+
+#define ZIP_OK                          (0)
+#define ZIP_EOF                         (0)
+#define ZIP_ERRNO                       (Z_ERRNO)
+#define ZIP_PARAMERROR                  (-102)
+#define ZIP_BADZIPFILE                  (-103)
+#define ZIP_INTERNALERROR               (-104)
+
+#ifndef DEF_MEM_LEVEL
+#  if MAX_MEM_LEVEL >= 8
+#    define DEF_MEM_LEVEL 8
+#  else
+#    define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#  endif
+#endif
+/* default memLevel */
+
+/* tm_zip contain date/time info */
+typedef struct tm_zip_s
+{
+    int tm_sec;             /* seconds after the minute - [0,59] */
+    int tm_min;             /* minutes after the hour - [0,59] */
+    int tm_hour;            /* hours since midnight - [0,23] */
+    int tm_mday;            /* day of the month - [1,31] */
+    int tm_mon;             /* months since January - [0,11] */
+    int tm_year;            /* years - [1980..2044] */
+} tm_zip;
+
+typedef struct
+{
+    tm_zip      tmz_date;       /* date in understandable format           */
+    uLong       dosDate;       /* if dos_date == 0, tmu_date is used      */
+/*    uLong       flag;        */   /* general purpose bit flag        2 bytes */
+
+    uLong       internal_fa;    /* internal file attributes        2 bytes */
+    uLong       external_fa;    /* external file attributes        4 bytes */
+} zip_fileinfo;
+
+typedef const char* zipcharpc;
+
+
+#define APPEND_STATUS_CREATE        (0)
+#define APPEND_STATUS_CREATEAFTER   (1)
+#define APPEND_STATUS_ADDINZIP      (2)
+
+extern zipFile ZEXPORT zipOpen(const char *pathname, int append);
+extern zipFile ZEXPORT zipOpen64(const void *pathname, int append);
+/*
+  Create a zipfile.
+     pathname contain on Windows XP a filename like "c:\\zlib\\zlib113.zip" or on
+       an Unix computer "zlib/zlib113.zip".
+     if the file pathname exist and append==APPEND_STATUS_CREATEAFTER, the zip
+       will be created at the end of the file.
+         (useful if the file contain a self extractor code)
+     if the file pathname exist and append==APPEND_STATUS_ADDINZIP, we will
+       add files in existing zip (be sure you don't add file that doesn't exist)
+     If the zipfile cannot be opened, the return value is NULL.
+     Else, the return value is a zipFile Handle, usable with other function
+       of this zip package.
+ */
+
+/* Note : there is no delete function into a zipfile.
+   If you want delete file into a zipfile, you must open a zipfile, and create another
+   Of course, you can use RAW reading and writing to copy the file you did not want delete
+ */
+
+extern zipFile ZEXPORT zipOpen2(const char *pathname,
+                                int append,
+                                zipcharpc* globalcomment,
+                                zlib_filefunc_def* pzlib_filefunc_def);
+
+extern zipFile ZEXPORT zipOpen2_64(const void *pathname,
+                                   int append,
+                                   zipcharpc* globalcomment,
+                                   zlib_filefunc64_def* pzlib_filefunc_def);
+
+extern zipFile ZEXPORT zipOpen3(const void *pathname,
+                                int append,
+                                zipcharpc* globalcomment,
+                                zlib_filefunc64_32_def* pzlib_filefunc64_32_def);
+
+extern int ZEXPORT zipOpenNewFileInZip(zipFile file,
+                                       const char* filename,
+                                       const zip_fileinfo* zipfi,
+                                       const void* extrafield_local,
+                                       uInt size_extrafield_local,
+                                       const void* extrafield_global,
+                                       uInt size_extrafield_global,
+                                       const char* comment,
+                                       int method,
+                                       int level);
+
+extern int ZEXPORT zipOpenNewFileInZip64(zipFile file,
+                                         const char* filename,
+                                         const zip_fileinfo* zipfi,
+                                         const void* extrafield_local,
+                                         uInt size_extrafield_local,
+                                         const void* extrafield_global,
+                                         uInt size_extrafield_global,
+                                         const char* comment,
+                                         int method,
+                                         int level,
+                                         int zip64);
+
+/*
+  Open a file in the ZIP for writing.
+  filename : the filename in zip (if NULL, '-' without quote will be used
+  *zipfi contain supplemental information
+  if extrafield_local!=NULL and size_extrafield_local>0, extrafield_local
+    contains the extrafield data for the local header
+  if extrafield_global!=NULL and size_extrafield_global>0, extrafield_global
+    contains the extrafield data for the global header
+  if comment != NULL, comment contain the comment string
+  method contain the compression method (0 for store, Z_DEFLATED for deflate)
+  level contain the level of compression (can be Z_DEFAULT_COMPRESSION)
+  zip64 is set to 1 if a zip64 extended information block should be added to the local file header.
+                    this MUST be '1' if the uncompressed size is >= 0xffffffff.
+
+ */
+
+
+extern int ZEXPORT zipOpenNewFileInZip2(zipFile file,
+                                        const char* filename,
+                                        const zip_fileinfo* zipfi,
+                                        const void* extrafield_local,
+                                        uInt size_extrafield_local,
+                                        const void* extrafield_global,
+                                        uInt size_extrafield_global,
+                                        const char* comment,
+                                        int method,
+                                        int level,
+                                        int raw);
+
+
+extern int ZEXPORT zipOpenNewFileInZip2_64(zipFile file,
+                                           const char* filename,
+                                           const zip_fileinfo* zipfi,
+                                           const void* extrafield_local,
+                                           uInt size_extrafield_local,
+                                           const void* extrafield_global,
+                                           uInt size_extrafield_global,
+                                           const char* comment,
+                                           int method,
+                                           int level,
+                                           int raw,
+                                           int zip64);
+/*
+  Same than zipOpenNewFileInZip, except if raw=1, we write raw file
+ */
+
+extern int ZEXPORT zipOpenNewFileInZip3(zipFile file,
+                                        const char* filename,
+                                        const zip_fileinfo* zipfi,
+                                        const void* extrafield_local,
+                                        uInt size_extrafield_local,
+                                        const void* extrafield_global,
+                                        uInt size_extrafield_global,
+                                        const char* comment,
+                                        int method,
+                                        int level,
+                                        int raw,
+                                        int windowBits,
+                                        int memLevel,
+                                        int strategy,
+                                        const char* password,
+                                        uLong crcForCrypting);
+
+extern int ZEXPORT zipOpenNewFileInZip3_64(zipFile file,
+                                           const char* filename,
+                                           const zip_fileinfo* zipfi,
+                                           const void* extrafield_local,
+                                           uInt size_extrafield_local,
+                                           const void* extrafield_global,
+                                           uInt size_extrafield_global,
+                                           const char* comment,
+                                           int method,
+                                           int level,
+                                           int raw,
+                                           int windowBits,
+                                           int memLevel,
+                                           int strategy,
+                                           const char* password,
+                                           uLong crcForCrypting,
+                                           int zip64);
+
+/*
+  Same than zipOpenNewFileInZip2, except
+    windowBits,memLevel,,strategy : see parameter strategy in deflateInit2
+    password : crypting password (NULL for no crypting)
+    crcForCrypting : crc of file to compress (needed for crypting)
+ */
+
+extern int ZEXPORT zipOpenNewFileInZip4(zipFile file,
+                                        const char* filename,
+                                        const zip_fileinfo* zipfi,
+                                        const void* extrafield_local,
+                                        uInt size_extrafield_local,
+                                        const void* extrafield_global,
+                                        uInt size_extrafield_global,
+                                        const char* comment,
+                                        int method,
+                                        int level,
+                                        int raw,
+                                        int windowBits,
+                                        int memLevel,
+                                        int strategy,
+                                        const char* password,
+                                        uLong crcForCrypting,
+                                        uLong versionMadeBy,
+                                        uLong flagBase);
+
+
+extern int ZEXPORT zipOpenNewFileInZip4_64(zipFile file,
+                                           const char* filename,
+                                           const zip_fileinfo* zipfi,
+                                           const void* extrafield_local,
+                                           uInt size_extrafield_local,
+                                           const void* extrafield_global,
+                                           uInt size_extrafield_global,
+                                           const char* comment,
+                                           int method,
+                                           int level,
+                                           int raw,
+                                           int windowBits,
+                                           int memLevel,
+                                           int strategy,
+                                           const char* password,
+                                           uLong crcForCrypting,
+                                           uLong versionMadeBy,
+                                           uLong flagBase,
+                                           int zip64);
+/*
+  Same than zipOpenNewFileInZip4, except
+    versionMadeBy : value for Version made by field
+    flag : value for flag field (compression level info will be added)
+ */
+
+
+extern int ZEXPORT zipWriteInFileInZip(zipFile file,
+                                       const void* buf,
+                                       unsigned len);
+/*
+  Write data in the zipfile
+ */
+
+extern int ZEXPORT zipCloseFileInZip(zipFile file);
+/*
+  Close the current file in the zipfile
+ */
+
+extern int ZEXPORT zipCloseFileInZipRaw(zipFile file,
+                                        uLong uncompressed_size,
+                                        uLong crc32);
+
+extern int ZEXPORT zipCloseFileInZipRaw64(zipFile file,
+                                          ZPOS64_T uncompressed_size,
+                                          uLong crc32);
+
+extern int ZEXPORT zipAlreadyThere(zipFile file,
+                                   char const* name);
+/*
+  See if name is already in file's central directory.
+ */
+
+/*
+  Close the current file in the zipfile, for file opened with
+    parameter raw=1 in zipOpenNewFileInZip2
+  uncompressed_size and crc32 are value for the uncompressed size
+ */
+
+extern int ZEXPORT zipClose(zipFile file,
+                            const char* global_comment);
+/*
+  Close the zipfile
+ */
+
+
+extern int ZEXPORT zipRemoveExtraInfoBlock(char* pData, int* dataLen, short sHeader);
+/*
+  zipRemoveExtraInfoBlock -  Added by Mathias Svensson
+
+  Remove extra information block from a extra information data for the local file header or central directory header
+
+  It is needed to remove ZIP64 extra information blocks when before data is written if using RAW mode.
+
+  0x0001 is the signature header for the ZIP64 extra information blocks
+
+  usage.
+                        Remove ZIP64 Extra information from a central director extra field data
+              zipRemoveExtraInfoBlock(pCenDirExtraFieldData, &nCenDirExtraFieldDataLen, 0x0001);
+
+                        Remove ZIP64 Extra information from a Local File Header extra field data
+        zipRemoveExtraInfoBlock(pLocalHeaderExtraFieldData, &nLocalHeaderExtraFieldDataLen, 0x0001);
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _zip64_H */

deps/v8/third_party/zlib/contrib/optimizations/chunkcopy.h

@@ -0,0 +1,564 @@
+/* chunkcopy.h -- fast chunk copy and set operations
+ * Copyright (C) 2017 ARM, Inc.
+ * Copyright 2017 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#ifndef CHUNKCOPY_H
+#define CHUNKCOPY_H
+
+#include <stdint.h>
+#include "zutil.h"
+
+#define Z_STATIC_ASSERT(name, assert) typedef char name[(assert) ? 1 : -1]
+
+#if __STDC_VERSION__ >= 199901L
+#define Z_RESTRICT restrict
+#else
+#define Z_RESTRICT
+#endif
+
+#if defined(__clang__) || defined(__GNUC__) || defined(__llvm__)
+#define Z_BUILTIN_MEMCPY __builtin_memcpy
+#define Z_BUILTIN_MEMSET __builtin_memset
+#else
+#define Z_BUILTIN_MEMCPY zmemcpy
+#define Z_BUILTIN_MEMSET zmemset
+#endif
+
+#if defined(INFLATE_CHUNK_SIMD_NEON)
+#include <arm_neon.h>
+typedef uint8x16_t z_vec128i_t;
+#elif defined(INFLATE_CHUNK_SIMD_SSE2)
+#include <emmintrin.h>
+typedef __m128i z_vec128i_t;
+#elif defined(INFLATE_CHUNK_GENERIC)
+typedef struct { uint8_t x[16]; } z_vec128i_t;
+#else
+#error chunkcopy.h inflate chunk SIMD is not defined for your build target
+#endif
+
+/*
+ * Suppress MSan errors about copying uninitialized bytes (crbug.com/1376033).
+ */
+#define Z_DISABLE_MSAN
+#if defined(__has_feature)
+  #if __has_feature(memory_sanitizer)
+    #undef Z_DISABLE_MSAN
+    #define Z_DISABLE_MSAN __attribute__((no_sanitize("memory")))
+  #endif
+#endif
+
+/*
+ * chunk copy type: the z_vec128i_t type size should be exactly 128-bits
+ * and equal to CHUNKCOPY_CHUNK_SIZE.
+ */
+#define CHUNKCOPY_CHUNK_SIZE sizeof(z_vec128i_t)
+
+Z_STATIC_ASSERT(vector_128_bits_wide,
+                CHUNKCOPY_CHUNK_SIZE == sizeof(int8_t) * 16);
+
+/*
+ * Ask the compiler to perform a wide, unaligned load with a machine
+ * instruction appropriate for the z_vec128i_t type.
+ */
+static inline z_vec128i_t loadchunk(
+    const unsigned char FAR* s) Z_DISABLE_MSAN {
+  z_vec128i_t v;
+  Z_BUILTIN_MEMCPY(&v, s, sizeof(v));
+  return v;
+}
+
+/*
+ * Ask the compiler to perform a wide, unaligned store with a machine
+ * instruction appropriate for the z_vec128i_t type.
+ */
+static inline void storechunk(
+    unsigned char FAR* d,
+    const z_vec128i_t v) {
+  Z_BUILTIN_MEMCPY(d, &v, sizeof(v));
+}
+
+/*
+ * Perform a memcpy-like operation, assuming that length is non-zero and that
+ * it's OK to overwrite at least CHUNKCOPY_CHUNK_SIZE bytes of output even if
+ * the length is shorter than this.
+ *
+ * It also guarantees that it will properly unroll the data if the distance
+ * between `out` and `from` is at least CHUNKCOPY_CHUNK_SIZE, which we rely on
+ * in chunkcopy_relaxed().
+ *
+ * Aside from better memory bus utilisation, this means that short copies
+ * (CHUNKCOPY_CHUNK_SIZE bytes or fewer) will fall straight through the loop
+ * without iteration, which will hopefully make the branch prediction more
+ * reliable.
+ */
+static inline unsigned char FAR* chunkcopy_core(
+    unsigned char FAR* out,
+    const unsigned char FAR* from,
+    unsigned len) Z_DISABLE_MSAN {
+  const int bump = (--len % CHUNKCOPY_CHUNK_SIZE) + 1;
+  storechunk(out, loadchunk(from));
+  out += bump;
+  from += bump;
+  len /= CHUNKCOPY_CHUNK_SIZE;
+  while (len-- > 0) {
+    storechunk(out, loadchunk(from));
+    out += CHUNKCOPY_CHUNK_SIZE;
+    from += CHUNKCOPY_CHUNK_SIZE;
+  }
+  return out;
+}
+
+/*
+ * Like chunkcopy_core(), but avoid writing beyond of legal output.
+ *
+ * Accepts an additional pointer to the end of safe output.  A generic safe
+ * copy would use (out + len), but it's normally the case that the end of the
+ * output buffer is beyond the end of the current copy, and this can still be
+ * exploited.
+ */
+static inline unsigned char FAR* chunkcopy_core_safe(
+    unsigned char FAR* out,
+    const unsigned char FAR* from,
+    unsigned len,
+    unsigned char FAR* limit) {
+  Assert(out + len <= limit, "chunk copy exceeds safety limit");
+  if ((limit - out) < (ptrdiff_t)CHUNKCOPY_CHUNK_SIZE) {
+    const unsigned char FAR* Z_RESTRICT rfrom = from;
+    Assert((uintptr_t)out - (uintptr_t)from >= len,
+           "invalid restrict in chunkcopy_core_safe");
+    Assert((uintptr_t)from - (uintptr_t)out >= len,
+           "invalid restrict in chunkcopy_core_safe");
+    if (len & 8) {
+      Z_BUILTIN_MEMCPY(out, rfrom, 8);
+      out += 8;
+      rfrom += 8;
+    }
+    if (len & 4) {
+      Z_BUILTIN_MEMCPY(out, rfrom, 4);
+      out += 4;
+      rfrom += 4;
+    }
+    if (len & 2) {
+      Z_BUILTIN_MEMCPY(out, rfrom, 2);
+      out += 2;
+      rfrom += 2;
+    }
+    if (len & 1) {
+      *out++ = *rfrom++;
+    }
+    return out;
+  }
+  return chunkcopy_core(out, from, len);
+}
+
+/*
+ * Perform short copies until distance can be rewritten as being at least
+ * CHUNKCOPY_CHUNK_SIZE.
+ *
+ * Assumes it's OK to overwrite at least the first 2*CHUNKCOPY_CHUNK_SIZE
+ * bytes of output even if the copy is shorter than this.  This assumption
+ * holds within zlib inflate_fast(), which starts every iteration with at
+ * least 258 bytes of output space available (258 being the maximum length
+ * output from a single token; see inffast.c).
+ */
+static inline unsigned char FAR* chunkunroll_relaxed(
+    unsigned char FAR* out,
+    unsigned FAR* dist,
+    unsigned FAR* len) Z_DISABLE_MSAN {
+  const unsigned char FAR* from = out - *dist;
+  while (*dist < *len && *dist < CHUNKCOPY_CHUNK_SIZE) {
+    storechunk(out, loadchunk(from));
+    out += *dist;
+    *len -= *dist;
+    *dist += *dist;
+  }
+  return out;
+}
+
+#if defined(INFLATE_CHUNK_SIMD_NEON)
+/*
+ * v_load64_dup(): load *src as an unaligned 64-bit int and duplicate it in
+ * every 64-bit component of the 128-bit result (64-bit int splat).
+ */
+static inline z_vec128i_t v_load64_dup(const void* src) {
+  return vcombine_u8(vld1_u8(src), vld1_u8(src));
+}
+
+/*
+ * v_load32_dup(): load *src as an unaligned 32-bit int and duplicate it in
+ * every 32-bit component of the 128-bit result (32-bit int splat).
+ */
+static inline z_vec128i_t v_load32_dup(const void* src) {
+  int32_t i32;
+  Z_BUILTIN_MEMCPY(&i32, src, sizeof(i32));
+  return vreinterpretq_u8_s32(vdupq_n_s32(i32));
+}
+
+/*
+ * v_load16_dup(): load *src as an unaligned 16-bit int and duplicate it in
+ * every 16-bit component of the 128-bit result (16-bit int splat).
+ */
+static inline z_vec128i_t v_load16_dup(const void* src) {
+  int16_t i16;
+  Z_BUILTIN_MEMCPY(&i16, src, sizeof(i16));
+  return vreinterpretq_u8_s16(vdupq_n_s16(i16));
+}
+
+/*
+ * v_load8_dup(): load the 8-bit int *src and duplicate it in every 8-bit
+ * component of the 128-bit result (8-bit int splat).
+ */
+static inline z_vec128i_t v_load8_dup(const void* src) {
+  return vld1q_dup_u8((const uint8_t*)src);
+}
+
+/*
+ * v_store_128(): store the 128-bit vec in a memory destination (that might
+ * not be 16-byte aligned) void* out.
+ */
+static inline void v_store_128(void* out, const z_vec128i_t vec) {
+  vst1q_u8(out, vec);
+}
+
+#elif defined(INFLATE_CHUNK_SIMD_SSE2)
+/*
+ * v_load64_dup(): load *src as an unaligned 64-bit int and duplicate it in
+ * every 64-bit component of the 128-bit result (64-bit int splat).
+ */
+static inline z_vec128i_t v_load64_dup(const void* src) {
+  int64_t i64;
+  Z_BUILTIN_MEMCPY(&i64, src, sizeof(i64));
+  return _mm_set1_epi64x(i64);
+}
+
+/*
+ * v_load32_dup(): load *src as an unaligned 32-bit int and duplicate it in
+ * every 32-bit component of the 128-bit result (32-bit int splat).
+ */
+static inline z_vec128i_t v_load32_dup(const void* src) {
+  int32_t i32;
+  Z_BUILTIN_MEMCPY(&i32, src, sizeof(i32));
+  return _mm_set1_epi32(i32);
+}
+
+/*
+ * v_load16_dup(): load *src as an unaligned 16-bit int and duplicate it in
+ * every 16-bit component of the 128-bit result (16-bit int splat).
+ */
+static inline z_vec128i_t v_load16_dup(const void* src) {
+  int16_t i16;
+  Z_BUILTIN_MEMCPY(&i16, src, sizeof(i16));
+  return _mm_set1_epi16(i16);
+}
+
+/*
+ * v_load8_dup(): load the 8-bit int *src and duplicate it in every 8-bit
+ * component of the 128-bit result (8-bit int splat).
+ */
+static inline z_vec128i_t v_load8_dup(const void* src) {
+  return _mm_set1_epi8(*(const char*)src);
+}
+
+/*
+ * v_store_128(): store the 128-bit vec in a memory destination (that might
+ * not be 16-byte aligned) void* out.
+ */
+static inline void v_store_128(void* out, const z_vec128i_t vec) {
+  _mm_storeu_si128((__m128i*)out, vec);
+}
+#elif defined(INFLATE_CHUNK_GENERIC)
+/*
+ * Default implementations for chunk-copy functions rely on memcpy() being
+ * inlined by the compiler for best performance.  This is most likely to work
+ * as expected when the length argument is constant (as is the case here) and
+ * the target supports unaligned loads and stores.  Since that's not always a
+ * safe assumption, this may need extra compiler arguments such as
+ * `-mno-strict-align` or `-munaligned-access`, or the availability of
+ * extensions like SIMD.
+ */
+
+/*
+ * v_load64_dup(): load *src as an unaligned 64-bit int and duplicate it in
+ * every 64-bit component of the 128-bit result (64-bit int splat).
+ */
+static inline z_vec128i_t v_load64_dup(const void* src) {
+  int64_t in;
+  Z_BUILTIN_MEMCPY(&in, src, sizeof(in));
+  z_vec128i_t out;
+  for (int i = 0; i < sizeof(out); i += sizeof(in)) {
+    Z_BUILTIN_MEMCPY((uint8_t*)&out + i, &in, sizeof(in));
+  }
+  return out;
+}
+
+/*
+ * v_load32_dup(): load *src as an unaligned 32-bit int and duplicate it in
+ * every 32-bit component of the 128-bit result (32-bit int splat).
+ */
+static inline z_vec128i_t v_load32_dup(const void* src) {
+  int32_t in;
+  Z_BUILTIN_MEMCPY(&in, src, sizeof(in));
+  z_vec128i_t out;
+  for (int i = 0; i < sizeof(out); i += sizeof(in)) {
+    Z_BUILTIN_MEMCPY((uint8_t*)&out + i, &in, sizeof(in));
+  }
+  return out;
+}
+
+/*
+ * v_load16_dup(): load *src as an unaligned 16-bit int and duplicate it in
+ * every 16-bit component of the 128-bit result (16-bit int splat).
+ */
+static inline z_vec128i_t v_load16_dup(const void* src) {
+  int16_t in;
+  Z_BUILTIN_MEMCPY(&in, src, sizeof(in));
+  z_vec128i_t out;
+  for (int i = 0; i < sizeof(out); i += sizeof(in)) {
+    Z_BUILTIN_MEMCPY((uint8_t*)&out + i, &in, sizeof(in));
+  }
+  return out;
+}
+
+/*
+ * v_load8_dup(): load the 8-bit int *src and duplicate it in every 8-bit
+ * component of the 128-bit result (8-bit int splat).
+ */
+static inline z_vec128i_t v_load8_dup(const void* src) {
+  int8_t in = *(const uint8_t*)src;
+  z_vec128i_t out;
+  Z_BUILTIN_MEMSET(&out, in, sizeof(out));
+  return out;
+}
+
+/*
+ * v_store_128(): store the 128-bit vec in a memory destination (that might
+ * not be 16-byte aligned) void* out.
+ */
+static inline void v_store_128(void* out, const z_vec128i_t vec) {
+  Z_BUILTIN_MEMCPY(out, &vec, sizeof(vec));
+}
+#endif
+
+/*
+ * Perform an overlapping copy which behaves as a memset() operation, but
+ * supporting periods other than one, and assume that length is non-zero and
+ * that it's OK to overwrite at least CHUNKCOPY_CHUNK_SIZE*3 bytes of output
+ * even if the length is shorter than this.
+ */
+static inline unsigned char FAR* chunkset_core(
+    unsigned char FAR* out,
+    unsigned period,
+    unsigned len) {
+  z_vec128i_t v;
+  const int bump = ((len - 1) % sizeof(v)) + 1;
+
+  switch (period) {
+    case 1:
+      v = v_load8_dup(out - 1);
+      v_store_128(out, v);
+      out += bump;
+      len -= bump;
+      while (len > 0) {
+        v_store_128(out, v);
+        out += sizeof(v);
+        len -= sizeof(v);
+      }
+      return out;
+    case 2:
+      v = v_load16_dup(out - 2);
+      v_store_128(out, v);
+      out += bump;
+      len -= bump;
+      if (len > 0) {
+        v = v_load16_dup(out - 2);
+        do {
+          v_store_128(out, v);
+          out += sizeof(v);
+          len -= sizeof(v);
+        } while (len > 0);
+      }
+      return out;
+    case 4:
+      v = v_load32_dup(out - 4);
+      v_store_128(out, v);
+      out += bump;
+      len -= bump;
+      if (len > 0) {
+        v = v_load32_dup(out - 4);
+        do {
+          v_store_128(out, v);
+          out += sizeof(v);
+          len -= sizeof(v);
+        } while (len > 0);
+      }
+      return out;
+    case 8:
+      v = v_load64_dup(out - 8);
+      v_store_128(out, v);
+      out += bump;
+      len -= bump;
+      if (len > 0) {
+        v = v_load64_dup(out - 8);
+        do {
+          v_store_128(out, v);
+          out += sizeof(v);
+          len -= sizeof(v);
+        } while (len > 0);
+      }
+      return out;
+  }
+  out = chunkunroll_relaxed(out, &period, &len);
+  return chunkcopy_core(out, out - period, len);
+}
+
+/*
+ * Perform a memcpy-like operation, but assume that length is non-zero and that
+ * it's OK to overwrite at least CHUNKCOPY_CHUNK_SIZE bytes of output even if
+ * the length is shorter than this.
+ *
+ * Unlike chunkcopy_core() above, no guarantee is made regarding the behaviour
+ * of overlapping buffers, regardless of the distance between the pointers.
+ * This is reflected in the `restrict`-qualified pointers, allowing the
+ * compiler to re-order loads and stores.
+ */
+static inline unsigned char FAR* chunkcopy_relaxed(
+    unsigned char FAR* Z_RESTRICT out,
+    const unsigned char FAR* Z_RESTRICT from,
+    unsigned len) {
+  Assert((uintptr_t)out - (uintptr_t)from >= len,
+         "invalid restrict in chunkcopy_relaxed");
+  Assert((uintptr_t)from - (uintptr_t)out >= len,
+         "invalid restrict in chunkcopy_relaxed");
+  return chunkcopy_core(out, from, len);
+}
+
+/*
+ * Like chunkcopy_relaxed(), but avoid writing beyond of legal output.
+ *
+ * Unlike chunkcopy_core_safe() above, no guarantee is made regarding the
+ * behaviour of overlapping buffers, regardless of the distance between the
+ * pointers.  This is reflected in the `restrict`-qualified pointers, allowing
+ * the compiler to re-order loads and stores.
+ *
+ * Accepts an additional pointer to the end of safe output.  A generic safe
+ * copy would use (out + len), but it's normally the case that the end of the
+ * output buffer is beyond the end of the current copy, and this can still be
+ * exploited.
+ */
+static inline unsigned char FAR* chunkcopy_safe(
+    unsigned char FAR* out,
+    const unsigned char FAR* Z_RESTRICT from,
+    unsigned len,
+    unsigned char FAR* limit) {
+  Assert(out + len <= limit, "chunk copy exceeds safety limit");
+  Assert((uintptr_t)out - (uintptr_t)from >= len,
+         "invalid restrict in chunkcopy_safe");
+  Assert((uintptr_t)from - (uintptr_t)out >= len,
+         "invalid restrict in chunkcopy_safe");
+
+  return chunkcopy_core_safe(out, from, len, limit);
+}
+
+/*
+ * Perform chunky copy within the same buffer, where the source and destination
+ * may potentially overlap.
+ *
+ * Assumes that len > 0 on entry, and that it's safe to write at least
+ * CHUNKCOPY_CHUNK_SIZE*3 bytes to the output.
+ */
+static inline unsigned char FAR* chunkcopy_lapped_relaxed(
+    unsigned char FAR* out,
+    unsigned dist,
+    unsigned len) {
+  if (dist < len && dist < CHUNKCOPY_CHUNK_SIZE) {
+    return chunkset_core(out, dist, len);
+  }
+  return chunkcopy_core(out, out - dist, len);
+}
+
+/*
+ * Behave like chunkcopy_lapped_relaxed(), but avoid writing beyond of legal
+ * output.
+ *
+ * Accepts an additional pointer to the end of safe output.  A generic safe
+ * copy would use (out + len), but it's normally the case that the end of the
+ * output buffer is beyond the end of the current copy, and this can still be
+ * exploited.
+ */
+static inline unsigned char FAR* chunkcopy_lapped_safe(
+    unsigned char FAR* out,
+    unsigned dist,
+    unsigned len,
+    unsigned char FAR* limit) {
+  Assert(out + len <= limit, "chunk copy exceeds safety limit");
+  if ((limit - out) < (ptrdiff_t)(3 * CHUNKCOPY_CHUNK_SIZE)) {
+    /* TODO(cavalcantii): try harder to optimise this */
+    while (len-- > 0) {
+      *out = *(out - dist);
+      out++;
+    }
+    return out;
+  }
+  return chunkcopy_lapped_relaxed(out, dist, len);
+}
+
+/* TODO(cavalcanti): see crbug.com/1110083. */
+static inline unsigned char FAR* chunkcopy_safe_ugly(unsigned char FAR* out,
+                                                     unsigned dist,
+                                                     unsigned len,
+                                                     unsigned char FAR* limit) {
+#if defined(__GNUC__) && !defined(__clang__)
+  /* Speed is the same as using chunkcopy_safe
+     w/ GCC on ARM (tested gcc 6.3 and 7.5) and avoids
+     undefined behavior.
+  */
+  return chunkcopy_core_safe(out, out - dist, len, limit);
+#elif defined(__clang__) && defined(ARMV8_OS_ANDROID) && !defined(__aarch64__)
+  /* Seems to perform better on 32bit (i.e. Android). */
+  return chunkcopy_core_safe(out, out - dist, len, limit);
+#else
+  /* Seems to perform better on 64bit. */
+  return chunkcopy_lapped_safe(out, dist, len, limit);
+#endif
+}
+
+/*
+ * The chunk-copy code above deals with writing the decoded DEFLATE data to
+ * the output with SIMD methods to increase decode speed. Reading the input
+ * to the DEFLATE decoder with a wide, SIMD method can also increase decode
+ * speed. This option is supported on little endian machines, and reads the
+ * input data in 64-bit (8 byte) chunks.
+ */
+
+#ifdef INFLATE_CHUNK_READ_64LE
+/*
+ * Buffer the input in a uint64_t (8 bytes) in the wide input reading case.
+ */
+typedef uint64_t inflate_holder_t;
+
+/*
+ * Ask the compiler to perform a wide, unaligned load of a uint64_t using a
+ * machine instruction appropriate for the uint64_t type.
+ */
+static inline inflate_holder_t read64le(const unsigned char FAR *in) {
+    inflate_holder_t input;
+    Z_BUILTIN_MEMCPY(&input, in, sizeof(input));
+    return input;
+}
+#else
+/*
+ * Otherwise, buffer the input bits using zlib's default input buffer type.
+ */
+typedef unsigned long inflate_holder_t;
+
+#endif /* INFLATE_CHUNK_READ_64LE */
+
+#undef Z_STATIC_ASSERT
+#undef Z_RESTRICT
+#undef Z_BUILTIN_MEMCPY
+#undef Z_DISABLE_MSAN
+
+#endif /* CHUNKCOPY_H */

deps/v8/third_party/zlib/contrib/optimizations/inffast_chunk.c

@@ -0,0 +1,376 @@
+/* inffast_chunk.c -- fast decoding
+ * Copyright (C) 1995-2017 Mark Adler
+ * Copyright 2023 The Chromium Authors
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "inflate.h"
+#include "contrib/optimizations/inffast_chunk.h"
+#include "contrib/optimizations/chunkcopy.h"
+
+#ifdef ASMINF
+#  pragma message("Assembler code may have bugs -- use at your own risk")
+#else
+
+/*
+   Decode literal, length, and distance codes and write out the resulting
+   literal and match bytes until either not enough input or output is
+   available, an end-of-block is encountered, or a data error is encountered.
+   When large enough input and output buffers are supplied to inflate(), for
+   example, a 16K input buffer and a 64K output buffer, more than 95% of the
+   inflate() execution time is spent in this routine.
+
+   Entry assumptions:
+
+        state->mode == LEN
+        strm->avail_in >= INFLATE_FAST_MIN_INPUT (6 or 8 bytes + 7 bytes)
+        strm->avail_out >= INFLATE_FAST_MIN_OUTPUT (258 bytes + 2 bytes)
+        start >= strm->avail_out
+        state->bits < 8
+        (state->hold >> state->bits) == 0
+        strm->next_out[0..strm->avail_out] does not overlap with
+              strm->next_in[0..strm->avail_in]
+        strm->state->window is allocated with an additional
+              CHUNKCOPY_CHUNK_SIZE-1 bytes of padding beyond strm->state->wsize
+
+   On return, state->mode is one of:
+
+        LEN -- ran out of enough output space or enough available input
+        TYPE -- reached end of block code, inflate() to interpret next block
+        BAD -- error in block data
+
+   Notes:
+
+    INFLATE_FAST_MIN_INPUT: 6 or 8 bytes + 7 bytes
+
+    - The maximum input bits used by a length/distance pair is 15 bits for the
+      length code, 5 bits for the length extra, 15 bits for the distance code,
+      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
+      Therefore if strm->avail_in >= 6, then there is enough input to avoid
+      checking for available input while decoding.
+
+    - The wide input data reading option reads 64 input bits at a time. Thus,
+      if strm->avail_in >= 8, then there is enough input to avoid checking for
+      available input while decoding. Reading consumes the input with:
+
+          hold |= read64le(in) << bits;
+          in += 6;
+          bits += 48;
+
+      reporting 6 bytes of new input because |bits| is 0..15 (2 bytes rounded
+      up, worst case) and 6 bytes is enough to decode as noted above. At exit,
+      hold &= (1U << bits) - 1 drops excess input to keep the invariant:
+
+          (state->hold >> state->bits) == 0
+
+    INFLATE_FAST_MIN_OUTPUT: 258 bytes + 2 bytes for literals = 260 bytes
+
+    - The maximum bytes that a single length/distance pair can output is 258
+      bytes, which is the maximum length that can be coded.  inflate_fast()
+      requires strm->avail_out >= 260 for each loop to avoid checking for
+      available output space while decoding.
+ */
+void ZLIB_INTERNAL inflate_fast_chunk_(z_streamp strm, unsigned start) {
+    struct inflate_state FAR *state;
+    z_const unsigned char FAR *in;      /* local strm->next_in */
+    z_const unsigned char FAR *last;    /* have enough input while in < last */
+    unsigned char FAR *out;     /* local strm->next_out */
+    unsigned char FAR *beg;     /* inflate()'s initial strm->next_out */
+    unsigned char FAR *end;     /* while out < end, enough space available */
+    unsigned char FAR *limit;   /* safety limit for chunky copies */
+#ifdef INFLATE_STRICT
+    unsigned dmax;              /* maximum distance from zlib header */
+#endif
+    unsigned wsize;             /* window size or zero if not using window */
+    unsigned whave;             /* valid bytes in the window */
+    unsigned wnext;             /* window write index */
+    unsigned char FAR *window;  /* allocated sliding window, if wsize != 0 */
+    inflate_holder_t hold;      /* local strm->hold */
+    unsigned bits;              /* local strm->bits */
+    code const FAR *lcode;      /* local strm->lencode */
+    code const FAR *dcode;      /* local strm->distcode */
+    unsigned lmask;             /* mask for first level of length codes */
+    unsigned dmask;             /* mask for first level of distance codes */
+    code const *here;           /* retrieved table entry */
+    unsigned op;                /* code bits, operation, extra bits, or */
+                                /*  window position, window bytes to copy */
+    unsigned len;               /* match length, unused bytes */
+    unsigned dist;              /* match distance */
+    unsigned char FAR *from;    /* where to copy match from */
+
+    /* copy state to local variables */
+    state = (struct inflate_state FAR *)strm->state;
+    in = strm->next_in;
+    last = in + (strm->avail_in - (INFLATE_FAST_MIN_INPUT - 1));
+    out = strm->next_out;
+    beg = out - (start - strm->avail_out);
+    end = out + (strm->avail_out - (INFLATE_FAST_MIN_OUTPUT - 1));
+    limit = out + strm->avail_out;
+#ifdef INFLATE_STRICT
+    dmax = state->dmax;
+#endif
+    wsize = state->wsize;
+    whave = state->whave;
+    wnext = (state->wnext == 0 && whave >= wsize) ? wsize : state->wnext;
+    window = state->window;
+    hold = state->hold;
+    bits = state->bits;
+    lcode = state->lencode;
+    dcode = state->distcode;
+    lmask = (1U << state->lenbits) - 1;
+    dmask = (1U << state->distbits) - 1;
+
+#ifdef INFLATE_CHUNK_READ_64LE
+#define REFILL() do { \
+        Assert(bits < 64, "### Too many bits in inflate_fast."); \
+        hold |= read64le(in) << bits; \
+        in += 7; \
+        in -= bits >> 3; \
+        bits |= 56; \
+    } while (0)
+#endif
+
+    /* decode literals and length/distances until end-of-block or not enough
+       input data or output space */
+    do {
+#ifdef INFLATE_CHUNK_READ_64LE
+        REFILL();
+#else
+        if (bits < 15) {
+            hold += (unsigned long)(*in++) << bits;
+            bits += 8;
+            hold += (unsigned long)(*in++) << bits;
+            bits += 8;
+        }
+#endif
+        here = lcode + (hold & lmask);
+#ifdef INFLATE_CHUNK_READ_64LE
+        if (here->op == 0) {                    /* literal */
+            Tracevv((stderr, here->val >= 0x20 && here->val < 0x7f ?
+                    "inflate:         literal '%c'\n" :
+                    "inflate:         literal 0x%02x\n", here->val));
+            *out++ = (unsigned char)(here->val);
+            hold >>= here->bits;
+            bits -= here->bits;
+            here = lcode + (hold & lmask);
+            if (here->op == 0) {                /* literal */
+                Tracevv((stderr, here->val >= 0x20 && here->val < 0x7f ?
+                        "inflate:    2nd  literal '%c'\n" :
+                        "inflate:    2nd  literal 0x%02x\n", here->val));
+                *out++ = (unsigned char)(here->val);
+                hold >>= here->bits;
+                bits -= here->bits;
+                here = lcode + (hold & lmask);
+            }
+        }
+#endif
+      dolen:
+        op = (unsigned)(here->bits);
+        hold >>= op;
+        bits -= op;
+        op = (unsigned)(here->op);
+        if (op == 0) {                          /* literal */
+            Tracevv((stderr, here->val >= 0x20 && here->val < 0x7f ?
+                    "inflate:         literal '%c'\n" :
+                    "inflate:         literal 0x%02x\n", here->val));
+            *out++ = (unsigned char)(here->val);
+        }
+        else if (op & 16) {                     /* length base */
+            len = (unsigned)(here->val);
+            op &= 15;                           /* number of extra bits */
+            if (op) {
+#ifndef INFLATE_CHUNK_READ_64LE
+                if (bits < op) {
+                    hold += (unsigned long)(*in++) << bits;
+                    bits += 8;
+                }
+#endif
+                len += (unsigned)hold & ((1U << op) - 1);
+                hold >>= op;
+                bits -= op;
+            }
+            Tracevv((stderr, "inflate:         length %u\n", len));
+#ifndef INFLATE_CHUNK_READ_64LE
+            if (bits < 15) {
+                hold += (unsigned long)(*in++) << bits;
+                bits += 8;
+                hold += (unsigned long)(*in++) << bits;
+                bits += 8;
+            }
+#endif
+            here = dcode + (hold & dmask);
+          dodist:
+            op = (unsigned)(here->bits);
+            hold >>= op;
+            bits -= op;
+            op = (unsigned)(here->op);
+            if (op & 16) {                      /* distance base */
+                dist = (unsigned)(here->val);
+                op &= 15;                       /* number of extra bits */
+                /* we have two fast-path loads: 10+10 + 15+5 + 15 = 55,
+                   but we may need to refill here in the worst case */
+                if (bits < op) {
+#ifdef INFLATE_CHUNK_READ_64LE
+                    REFILL();
+#else
+                    hold += (unsigned long)(*in++) << bits;
+                    bits += 8;
+                    if (bits < op) {
+                        hold += (unsigned long)(*in++) << bits;
+                        bits += 8;
+                    }
+#endif
+                }
+                dist += (unsigned)hold & ((1U << op) - 1);
+#ifdef INFLATE_STRICT
+                if (dist > dmax) {
+                    strm->msg = (char *)"invalid distance too far back";
+                    state->mode = BAD;
+                    break;
+                }
+#endif
+                hold >>= op;
+                bits -= op;
+                Tracevv((stderr, "inflate:         distance %u\n", dist));
+                op = (unsigned)(out - beg);     /* max distance in output */
+                if (dist > op) {                /* see if copy from window */
+                    op = dist - op;             /* distance back in window */
+                    if (op > whave) {
+                        if (state->sane) {
+                            strm->msg =
+                                (char *)"invalid distance too far back";
+                            state->mode = BAD;
+                            break;
+                        }
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+                        if (len <= op - whave) {
+                            do {
+                                *out++ = 0;
+                            } while (--len);
+                            continue;
+                        }
+                        len -= op - whave;
+                        do {
+                            *out++ = 0;
+                        } while (--op > whave);
+                        if (op == 0) {
+                            from = out - dist;
+                            do {
+                                *out++ = *from++;
+                            } while (--len);
+                            continue;
+                        }
+#endif
+                    }
+                    from = window;
+                    if (wnext >= op) {          /* contiguous in window */
+                        from += wnext - op;
+                    }
+                    else {                      /* wrap around window */
+                        op -= wnext;
+                        from += wsize - op;
+                        if (op < len) {         /* some from end of window */
+                            len -= op;
+                            out = chunkcopy_safe(out, from, op, limit);
+                            from = window;      /* more from start of window */
+                            op = wnext;
+                            /* This (rare) case can create a situation where
+                               the first chunkcopy below must be checked.
+                             */
+                        }
+                    }
+                    if (op < len) {             /* still need some from output */
+                        out = chunkcopy_safe(out, from, op, limit);
+                        len -= op;
+                        /* When dist is small the amount of data that can be
+                           copied from the window is also small, and progress
+                           towards the dangerous end of the output buffer is
+                           also small.  This means that for trivial memsets and
+                           for chunkunroll_relaxed() a safety check is
+                           unnecessary.  However, these conditions may not be
+                           entered at all, and in that case it's possible that
+                           the main copy is near the end.
+                          */
+                        out = chunkunroll_relaxed(out, &dist, &len);
+                        out = chunkcopy_safe_ugly(out, dist, len, limit);
+                    } else {
+                        /* from points to window, so there is no risk of
+                           overlapping pointers requiring memset-like behaviour
+                         */
+                        out = chunkcopy_safe(out, from, len, limit);
+                    }
+                }
+                else {
+                    /* Whole reference is in range of current output.  No
+                       range checks are necessary because we start with room
+                       for at least 258 bytes of output, so unroll and roundoff
+                       operations can write beyond `out+len` so long as they
+                       stay within 258 bytes of `out`.
+                     */
+                    out = chunkcopy_lapped_relaxed(out, dist, len);
+                }
+            }
+            else if ((op & 64) == 0) {          /* 2nd level distance code */
+                here = dcode + here->val + (hold & ((1U << op) - 1));
+                goto dodist;
+            }
+            else {
+                strm->msg = (char *)"invalid distance code";
+                state->mode = BAD;
+                break;
+            }
+        }
+        else if ((op & 64) == 0) {              /* 2nd level length code */
+            here = lcode + here->val + (hold & ((1U << op) - 1));
+            goto dolen;
+        }
+        else if (op & 32) {                     /* end-of-block */
+            Tracevv((stderr, "inflate:         end of block\n"));
+            state->mode = TYPE;
+            break;
+        }
+        else {
+            strm->msg = (char *)"invalid literal/length code";
+            state->mode = BAD;
+            break;
+        }
+    } while (in < last && out < end);
+
+    /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
+    len = bits >> 3;
+    in -= len;
+    bits -= len << 3;
+    hold &= (1U << bits) - 1;
+
+    /* update state and return */
+    strm->next_in = in;
+    strm->next_out = out;
+    strm->avail_in = (unsigned)(in < last ?
+        (INFLATE_FAST_MIN_INPUT - 1) + (last - in) :
+        (INFLATE_FAST_MIN_INPUT - 1) - (in - last));
+    strm->avail_out = (unsigned)(out < end ?
+        (INFLATE_FAST_MIN_OUTPUT - 1) + (end - out) :
+        (INFLATE_FAST_MIN_OUTPUT - 1) - (out - end));
+    state->hold = hold;
+    state->bits = bits;
+
+    Assert((state->hold >> state->bits) == 0, "invalid input data state");
+}
+
+/*
+   inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
+   - Using bit fields for code structure
+   - Different op definition to avoid & for extra bits (do & for table bits)
+   - Three separate decoding do-loops for direct, window, and wnext == 0
+   - Special case for distance > 1 copies to do overlapped load and store copy
+   - Explicit branch predictions (based on measured branch probabilities)
+   - Deferring match copy and interspersed it with decoding subsequent codes
+   - Swapping literal/length else
+   - Swapping window/direct else
+   - Larger unrolled copy loops (three is about right)
+   - Moving len -= 3 statement into middle of loop
+ */
+
+#endif /* !ASMINF */

deps/v8/third_party/zlib/contrib/optimizations/inffast_chunk.h

@@ -0,0 +1,42 @@
+/* inffast_chunk.h -- header to use inffast_chunk.c
+ * Copyright (C) 1995-2003, 2010 Mark Adler
+ * Copyright (C) 2017 ARM, Inc.
+ * Copyright 2023 The Chromium Authors
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#include "inffast.h"
+
+/* INFLATE_FAST_MIN_INPUT:
+   The minimum number of input bytes needed so that we can safely call
+   inflate_fast() with only one up-front bounds check. One
+   length/distance code pair (15 bits for the length code, 5 bits for length
+   extra, 15 bits for the distance code, 13 bits for distance extra) requires
+   reading up to 48 input bits. Additionally, in the same iteraction, we may
+   decode two literals from the root-table (requiring MIN_OUTPUT = 258 + 2).
+
+   Each root-table entry is up to 10 bits, for a total of 68 input bits each
+   iteraction.
+
+   The refill variant reads 8 bytes from the buffer at a time, and advances
+   the input pointer by up to 7 bytes, ensuring there are at least 56-bits
+   available in the bit-buffer. The technique was documented by Fabian Giesen
+   on his blog as variant 4 in the article 'Reading bits in far too many ways':
+   https://fgiesen.wordpress.com/2018/02/20/
+
+   In the worst case, we may refill twice in the same iteraction, requiring
+   MIN_INPUT = 8 + 7.
+*/
+#ifdef INFLATE_CHUNK_READ_64LE
+#undef INFLATE_FAST_MIN_INPUT
+#define INFLATE_FAST_MIN_INPUT 15
+#undef INFLATE_FAST_MIN_OUTPUT
+#define INFLATE_FAST_MIN_OUTPUT 260
+#endif
+
+void ZLIB_INTERNAL inflate_fast_chunk_(z_streamp strm, unsigned start);

deps/v8/third_party/zlib/contrib/optimizations/insert_string.h

@@ -0,0 +1,80 @@
+/* insert_string.h
+ *
+ * Copyright 2019 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#ifndef INSERT_STRING_H
+#define INSERT_STRING_H
+
+#ifndef INLINE
+#if defined(_MSC_VER) && !defined(__clang__)
+#define INLINE __inline
+#else
+#define INLINE inline
+#endif
+#endif
+
+#include <stdint.h>
+
+/**
+ * Some applications need to match zlib DEFLATE output exactly [3]. Use the
+ * canonical zlib Rabin-Karp rolling hash [1,2] in that case.
+ *
+ *  [1] For a description of the Rabin and Karp algorithm, see "Algorithms"
+ *      book by R. Sedgewick, Addison-Wesley, p252.
+ *  [2] https://www.euccas.me/zlib/#zlib_rabin_karp and also "rolling hash"
+ *      https://en.wikipedia.org/wiki/Rolling_hash
+ *  [3] crbug.com/1316541 AOSP incremental client APK package OTA upgrades.
+ */
+#ifdef CHROMIUM_ZLIB_NO_CASTAGNOLI
+#define USE_ZLIB_RABIN_KARP_ROLLING_HASH
+#endif
+
+/* ===========================================================================
+ * Update a hash value with the given input byte (Rabin-Karp rolling hash).
+ * IN  assertion: all calls to UPDATE_HASH are made with consecutive input
+ *    characters, so that a running hash key can be computed from the previous
+ *    key instead of complete recalculation each time.
+ */
+#define UPDATE_HASH(s, h, c) (h = (((h) << s->hash_shift) ^ (c)) & s->hash_mask)
+
+/* ===========================================================================
+ * Insert string str in the dictionary and set match_head to the previous head
+ * of the hash chain (the most recent string with same hash key). Return
+ * the previous length of the hash chain.
+ * If this file is compiled with -DFASTEST, the compression level is forced
+ * to 1, and no hash chains are maintained.
+ * IN  assertion: all calls to INSERT_STRING are made with consecutive input
+ *    characters and the first MIN_MATCH bytes of str are valid (except for
+ *    the last MIN_MATCH-1 bytes of the input file).
+ */
+local INLINE Pos insert_string(deflate_state* const s, const Pos str) {
+  Pos ret;
+/* insert_string dictionary insertion: ANZAC++ hasher
+ * significantly improves data compression speed.
+ *
+ * Note: the generated compressed output is a valid DEFLATE stream, but will
+ * differ from canonical zlib output.
+ */
+#if defined(USE_ZLIB_RABIN_KARP_ROLLING_HASH)
+  UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH - 1)]);
+#else
+  uint32_t value;
+  // Validated for little endian archs (i.e. x86, Arm). YMMV for big endian.
+  zmemcpy(&value, &s->window[str], sizeof(value));
+  s->ins_h = ((value * 66521 + 66521) >> 16) & s->hash_mask;
+#endif
+
+#ifdef FASTEST
+  ret = s->head[s->ins_h];
+#else
+  ret = s->prev[str & s->w_mask] = s->head[s->ins_h];
+#endif
+  s->head[s->ins_h] = str;
+
+  return ret;
+}
+
+#endif /* INSERT_STRING_H */

deps/v8/third_party/zlib/contrib/qat/deflate_qat.cpp

@@ -0,0 +1,312 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include "deflate_qat.h"
+#include "deflate.h"
+
+#include "session.hpp"
+#include "qat_instance.hpp"
+#include "qat_buffer_list.hpp"
+#include "qat.hpp"
+
+#include <memory>
+
+/*
+*   TODO(gustavoa): Make the input size adjustable from the memlevel
+*   attribute on deflateInit.
+*/
+static constexpr size_t kInputSize = 1024 * 1024;
+
+/* QAT Instances obtained available from the library. */
+static std::vector<std::shared_ptr<qat::Instance>> qat_instances;
+
+/*
+*   TODO(gustavoa): Verify if the ordering of the struct fields won't create
+*   unnecessary holes in the structure that requires extraneous padding.
+*/
+struct qat_deflate {
+    std::unique_ptr<qat::DeflateSession> qat_session;
+
+    /*  QAT requires contiguous physical pages. Cannot be allocated using
+    *   malloc/new.
+    */
+    uint8_t *input_buffer;
+    uint8_t *output_buffer;
+
+    /* Pointer to the next byte in the output buffer. */
+    uint8_t *pending_out;
+
+    unsigned input_buffer_size;
+    unsigned output_buffer_size;
+
+    unsigned pending_in_count;
+    unsigned pending_out_count;
+};
+
+static std::unique_ptr<qat::DeflateSession> qat_create_session(int level, int wrap)
+{
+    CpaDcChecksum checksum = CPA_DC_NONE;
+
+    switch(wrap) {
+    case 1:
+        checksum = CPA_DC_ADLER32;
+        break;
+    case 2:
+        checksum = CPA_DC_CRC32;
+        break;
+    }
+
+    return std::make_unique<qat::DeflateSession>(
+        qat_instances[0],
+        (CpaDcCompLvl)level,
+        checksum,
+        0
+    );
+}
+
+
+int qat_deflate_init()
+{
+    return (qat::Initialize()) ? Z_ERRNO : Z_OK;
+}
+
+struct qat_deflate* qat_deflate_state_init(int level, int wrap)
+{
+    if (qat_instances.empty()) {
+        qat_instances = qat::Instance::Create();
+    }
+    if (qat_instances.empty()) {
+        return nullptr;
+    }
+
+    struct qat_deflate *qat_deflate = new struct qat_deflate;
+    if (!qat_deflate) {
+        return nullptr;
+    }
+
+    /* TODO(gustavoa): Find a way to utilize all the available instances for the same
+     * process.
+     */
+    qat_instances[0]->Start();
+
+    qat_deflate->qat_session = qat_create_session(level, wrap);
+
+    qat_deflate->input_buffer_size = kInputSize;
+    qat_deflate->input_buffer = qat::AllocBlockArray<uint8_t>(kInputSize, 0);
+    qat_deflate->output_buffer_size =
+        qat_deflate->qat_session->GetDeflateBound(qat_deflate->input_buffer_size);
+    qat_deflate->pending_out = qat_deflate->output_buffer =
+        qat::AllocBlockArray<uint8_t>(qat_deflate->output_buffer_size, 0);
+
+    qat_deflate->pending_in_count = qat_deflate->pending_out_count = 0;
+
+    if (!qat_deflate->input_buffer || !qat_deflate->output_buffer) {
+        return nullptr;
+    }
+
+    return qat_deflate;
+}
+
+static unsigned qat_read_buf(z_streamp strm, struct qat_deflate* qat, unsigned size)
+{
+    unsigned len = strm->avail_in;
+
+    if (len > size) {
+        len = size;
+    }
+    if (len == 0) return 0;
+
+    strm->avail_in -= len;
+    strm->total_in += len;
+
+    zmemcpy(
+        qat->input_buffer + qat->pending_in_count,
+        strm->next_in,
+        len
+    );
+
+    strm->next_in += len;
+    qat->pending_in_count += len;
+
+    return len;
+}
+
+void qat_flush_pending(deflate_state* s)
+{
+    unsigned len;
+    z_streamp strm = s->strm;
+    struct qat_deflate* qat = s->qat_s;
+
+    len = qat->pending_out_count;
+    if (len > strm->avail_out) len = strm->avail_out;
+    if (len == 0) return;
+
+    zmemcpy(strm->next_out, qat->pending_out, len);
+
+    qat->pending_out        += len;
+    qat->pending_out_count -= len;
+    strm->next_out          += len;
+    strm->avail_out         -= len;
+    strm->total_out         += len;
+    if (qat->pending_out_count == 0) {
+        qat->pending_out = qat->output_buffer;
+    }
+}
+
+static int qat_compress_pending(deflate_state*s, int flush)
+{
+    struct qat_deflate* qat = s->qat_s;
+    uint32_t metadata_size;
+
+    /* TODO(gustavoa): find a way to make qatzpp setup this number internally. */
+    cpaDcBufferListGetMetaSize(qat->qat_session->getInstance()->GetHandle(), 1, &metadata_size);
+
+    auto job = qat->qat_session->Deflate(
+        std::make_unique<qat::IOBuffers>(
+            std::make_unique<qat::BufferListUser>(
+                qat->input_buffer,
+                qat->pending_in_count,
+                metadata_size
+            ),
+            std::make_unique<qat::BufferListUser>(
+                qat->output_buffer,
+                qat->output_buffer_size,
+                metadata_size
+            )
+        ), (flush == Z_FINISH && s->strm->avail_in == 0)
+    );
+
+    job->WaitCompletion();
+
+    /*
+     *  TODO(gustavoa): make QAT perform the checksum combine.
+     */
+    if (s->wrap == 2) {
+        s->strm->adler = crc32_combine(
+            s->strm->adler,
+            job->GetResults()->checksum,
+            job->GetResults()->consumed
+        );
+    } else if (s->wrap == 1) {
+        s->strm->adler = adler32(
+            s->strm->adler,
+            qat->input_buffer,
+            job->GetResults()->consumed
+        );
+    }
+
+    qat->pending_out_count = job->GetResults()->produced;
+    qat->pending_in_count -= job->GetResults()->consumed;
+
+    if(qat->pending_in_count != 0) {
+        /* Copy any remaining bytes to the beginning of the buffer. */
+        zmemcpy(
+            qat->input_buffer,
+            qat->input_buffer + job->GetResults()->consumed,
+            qat->pending_in_count
+        );
+    }
+
+    return 0;
+}
+
+qat_block_state qat_deflate_step(deflate_state* s, int flush)
+{
+    z_streamp strm = s->strm;
+    struct qat_deflate* qat_state = s->qat_s;
+
+    for (;;) {
+        if (qat_state->pending_in_count < qat_state->input_buffer_size) {
+            qat_read_buf(
+                strm,
+                qat_state,
+                qat_state->input_buffer_size - qat_state->pending_in_count
+            );
+            if (qat_state->pending_in_count < qat_state->input_buffer_size && flush == Z_NO_FLUSH) {
+                return qat_block_need_more;
+            } else {
+                qat_compress_pending(s, flush);
+            }
+            if (strm->avail_in == 0) {
+                break;
+            }
+        } else {
+            qat_compress_pending(s, flush);
+        }
+
+        qat_flush_pending(s);
+        if (strm->avail_out == 0) {
+            return (flush == Z_FINISH) ? qat_block_finish_started : qat_block_need_more;
+        }
+    }
+
+    if (flush == Z_FINISH) {
+        qat_flush_pending(s);
+        if (strm->avail_out == 0) {
+            return qat_block_finish_started;
+        } else {
+            return qat_block_finish_done;
+        }
+    }
+
+    qat_flush_pending(s);
+    if (strm->avail_out == 0) {
+        return qat_block_done;
+    }
+
+    return qat_block_need_more;
+}
+
+int qat_deflate_state_free(deflate_state* s)
+{
+    struct qat_deflate* qat_state = s->qat_s;
+    if (qat_state->input_buffer) {
+        qat::Free(qat_state->input_buffer);
+    }
+    if (qat_state->output_buffer) {
+        qat::Free(qat_state->output_buffer);
+    }
+
+    qat_state->qat_session.reset();
+    delete qat_state;
+    s->qat_s = nullptr;
+
+    return Z_OK;
+}
+
+struct qat_deflate *qat_deflate_copy(deflate_state *ss)
+{
+    struct qat_deflate *sqat = ss->qat_s;
+    struct qat_deflate *dqat = nullptr;
+
+    if (!sqat) {
+        return nullptr;
+    }
+
+    dqat = new struct qat_deflate;
+
+    dqat->qat_session = qat_create_session(ss->level, ss->wrap);
+
+    dqat->input_buffer_size = sqat->input_buffer_size;
+    dqat->input_buffer = qat::AllocBlockArray<uint8_t>(dqat->input_buffer_size, 0);
+
+    dqat->output_buffer_size = sqat->output_buffer_size;
+    dqat->output_buffer = qat::AllocBlockArray<uint8_t>(dqat->output_buffer_size, 0);
+
+    dqat->pending_in_count = sqat->pending_in_count;
+    dqat->pending_out_count = sqat->pending_out_count;
+
+    dqat->pending_out =
+        dqat->output_buffer + (sqat->pending_out - sqat->output_buffer);
+
+    zmemcpy(dqat->input_buffer, sqat->input_buffer, dqat->input_buffer_size);
+    zmemcpy(dqat->output_buffer, sqat->output_buffer, dqat->output_buffer_size);
+
+    return dqat;
+}
+

deps/v8/third_party/zlib/contrib/qat/deflate_qat.h

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef DEFLATE_QAT_H
+#define DEFLATE_QAT_H
+
+#include "deflate.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* This is a 1:1 mapping of the block states that deflate_fast, deflate_slow,
+ * deflate_rle, etc.. return.
+ * The added 'qat_failure' value is used for signaling the caller to revert
+ * back into software mode.
+ */
+typedef enum {
+    qat_block_need_more,
+    qat_block_done,
+    qat_block_finish_started,
+    qat_block_finish_done,
+    qat_failure
+} qat_block_state;
+
+/* Initialize QAT for the calling process if it has not been yet initialized. */
+int qat_deflate_init();
+
+/* Initialize a QAT stream state for a deflate_state object. */
+struct qat_deflate *qat_deflate_state_init(int level, int wra);
+
+/* Flush QAT output buffer into the zstream.next_out pointer. */
+void qat_flush_pending(deflate_state*);
+
+/* Compresses/copies/flushes any data in the internal QAT state
+ * input/output buffers.
+*/
+qat_block_state qat_deflate_step(deflate_state*, int flush);
+
+/* Frees all the QAT-related buffers and objects for a given deflate_state. */
+int qat_deflate_state_free(deflate_state*);
+
+struct qat_deflate *qat_deflate_copy(deflate_state *ss);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

deps/v8/third_party/zlib/contrib/qat/qatzpp/io_buffers.cpp

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include <fstream>
+#include <iostream>
+
+#include "io_buffers.h"
+#include "qat_instance.hpp"
+
+namespace qat
+{
+
+IOBuffers::IOBuffers()
+{
+}
+
+IOBuffers::IOBuffers(std::unique_ptr<BaseBufferList>&& src_list, std::unique_ptr<BaseBufferList>&& dst_list):
+    src_buffer_list_(std::move(src_list)), dst_buffer_list_(std::move(dst_list))
+{
+}
+
+IOBuffers::~IOBuffers()
+{
+}
+
+}

deps/v8/third_party/zlib/contrib/qat/qatzpp/io_buffers.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef QATZPP_IO_BUFFERS_H
+#define QATZPP_IO_BUFFERS_H
+
+#include <qat/cpa_dc.h>
+
+#include <cstring>
+#include <iostream>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include "memory.hpp"
+#include "qat_instance.hpp"
+
+namespace qat
+{
+
+struct BaseBufferList
+{
+    virtual ~BaseBufferList() {}
+
+    CpaBufferList list;
+    std::vector<CpaFlatBuffer> flat_buffers;
+
+protected:
+    BaseBufferList() {}
+};
+
+class IOBuffers
+{
+public:
+    IOBuffers(
+        std::unique_ptr<BaseBufferList> &&src_list,
+        std::unique_ptr<BaseBufferList> &&dst_list
+    );
+    virtual ~IOBuffers();
+
+    BaseBufferList *GetSrc() const {
+        return src_buffer_list_.get();
+    }
+
+    BaseBufferList *GetDst() const {
+        return dst_buffer_list_.get();
+    }
+protected:
+    IOBuffers();
+
+    std::unique_ptr<BaseBufferList> src_buffer_list_;
+    std::unique_ptr<BaseBufferList> dst_buffer_list_;
+};
+
+}
+
+#endif

deps/v8/third_party/zlib/contrib/qat/qatzpp/memory.cpp

@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include <qat/qae_mem.h>
+
+#include <cstdlib>
+#include <iostream>
+
+#include "memory.hpp"
+#include "qat.hpp"
+
+namespace qat
+{
+
+void *Alloc(size_t size_bytes, uint32_t numa_node)
+{
+    return qaeMemAllocNUMA(size_bytes, numa_node, 1);
+}
+
+void Free(void *ptr)
+{
+    qaeMemFreeNUMA(&ptr);
+}
+
+}

deps/v8/third_party/zlib/contrib/qat/qatzpp/memory.hpp

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef QATZPP_MEMORY_HPP
+#define QATZPP_MEMORY_HPP
+
+#include <cstddef>
+#include <cstdint>
+
+namespace qat
+{
+
+void *Alloc(size_t sizeBytes, uint32_t numa_node);
+
+template <typename T>
+T *AllocBlock(int32_t numa_node)
+{
+    return static_cast<T*>(Alloc(sizeof(T), numa_node));
+}
+
+template <typename T>
+T *AllocBlockArray(size_t count, int32_t numa_node)
+{
+    if (count <= 0) {
+        return nullptr;
+    }
+
+    return static_cast<T*>(Alloc(sizeof(T) * count, numa_node));
+}
+
+void Free(void *ptr);
+
+}
+
+#endif

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat.cpp

@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include "qat.hpp"
+
+#include <qat/cpa.h>
+#include <qat/icp_sal_user.h>
+#include <qat/qae_mem.h>
+
+#include <iostream>
+#include <string>
+#include <memory>
+#include <mutex>
+
+namespace qat
+{
+
+static bool g_qat_not_available = false;
+static bool g_qat_initialized = false;
+static std::mutex g_qat_initialization_mutex;
+
+class QATContext
+{
+public:
+    explicit QATContext() {}
+
+    QATContext(const QATContext &) = delete;
+    QATContext &operator=(const QATContext &) = delete;
+
+    QATContext(QATContext &&) = delete;
+    QATContext &operator=(QATContext &&) = delete;
+
+    ~QATContext()
+    {
+        std::lock_guard<std::mutex> lock(g_qat_initialization_mutex);
+
+        if (g_qat_not_available) return;
+
+        if (g_qat_initialized) {
+            icp_sal_userStop();
+            g_qat_initialized = false;
+        }
+    }
+};
+
+static std::unique_ptr<QATContext> qat_context;
+
+int Initialize()
+{
+    std::lock_guard<std::mutex> lock(g_qat_initialization_mutex);
+    uint32_t cpa_state;
+    if (g_qat_not_available) {
+        return CPA_STATUS_FAIL;
+    }
+    if (g_qat_initialized) {
+        return CPA_STATUS_SUCCESS;
+    }
+
+    cpa_state = icp_sal_userStartMultiProcess("SSL", CPA_FALSE);
+
+    g_qat_not_available = (cpa_state != CPA_STATUS_SUCCESS);
+    g_qat_initialized = (cpa_state == CPA_STATUS_SUCCESS);
+
+    qat_context = std::make_unique<QATContext>();
+    return cpa_state;
+}
+
+}

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat.hpp

@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef QATZPP_QAT_HPP
+#define QATZPP_QAT_HPP
+
+namespace qat
+{
+
+int Initialize();
+
+}
+
+#endif

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat_buffer_list.cpp

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include "qat_buffer_list.hpp"
+
+namespace qat
+{
+
+BufferListUser::BufferListUser(
+    uint8_t *data,
+    size_t size,
+    size_t metadata_size)
+{
+    flat_buffers = std::vector<CpaFlatBuffer>(1);
+    flat_buffers[0].pData = data;
+    flat_buffers[0].dataLenInBytes = size;
+    list.pPrivateMetaData = AllocBlockArray<uint8_t>(metadata_size, 0);
+    list.numBuffers = 1;
+    list.pBuffers = flat_buffers.data();
+}
+
+BufferListUser::~BufferListUser()
+{
+    if (list.pPrivateMetaData) {
+        Free(list.pPrivateMetaData);
+    }
+}
+
+}

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat_buffer_list.hpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef QATZPP_QAT_BUFFER_LIST_HPP
+#define QATZPP_QAT_BUFFER_LIST_HPP
+
+#include <qat/cpa.h>
+
+#include "io_buffers.h"
+
+namespace qat
+{
+
+struct BufferListUser final : public BaseBufferList
+{
+    BufferListUser(
+        uint8_t *data,
+        size_t size,
+        size_t metadata_size
+    );
+
+    ~BufferListUser() override;
+};
+
+}
+
+#endif

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat_instance.cpp

@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include <qat/qae_mem.h>
+
+#include <iostream>
+#include <vector>
+
+#include "memory.hpp"
+#include "qat_instance.hpp"
+#include "session.hpp"
+
+#define MAX_SAMPLE_BUFFER_SIZE  (4*1024*1024)
+
+namespace qat
+{
+
+static std::mutex g_instance_mutex;
+static std::vector<std::shared_ptr<Instance>> instances;
+
+static CpaPhysicalAddr virt2Phys(void *virt_addr)
+{
+    return (CpaPhysicalAddr)qaeVirtToPhysNUMA(virt_addr);
+}
+
+Instance::Instance(CpaInstanceHandle instance):
+    instance_(instance),
+    num_intermediate_buffer_lists_(0),
+    intermediate_buffer_array_(nullptr),
+    started_(false)
+{
+    CpaDcInstanceCapabilities caps{};
+    cpaDcQueryCapabilities(instance_, &caps);
+
+    if (!caps.statelessDeflateCompression || !caps.statelessDeflateDecompression ||
+        !caps.checksumAdler32 || !caps.dynamicHuffman)
+    {
+        return;
+    }
+
+    if (caps.dynamicHuffmanBufferReq) {
+        uint32_t buffer_metadata_size;
+        cpaDcBufferListGetMetaSize(instance_, 1, &buffer_metadata_size);
+        cpaDcGetNumIntermediateBuffers(instance_, &num_intermediate_buffer_lists_);
+
+        if(num_intermediate_buffer_lists_) {
+            intermediate_buffer_array_ = AllocBlockArray<CpaBufferList*>(num_intermediate_buffer_lists_, 0);
+        }
+        for (int i = 0; i < num_intermediate_buffer_lists_; ++i) {
+            intermediate_buffer_array_[i] = AllocBlock<CpaBufferList>(0);
+            intermediate_buffer_array_[i]->pPrivateMetaData =
+                                                    AllocBlockArray<uint8_t>(buffer_metadata_size, 0);
+            intermediate_buffer_array_[i]->pBuffers = AllocBlock<CpaFlatBuffer>(0);
+            intermediate_buffer_array_[i]->pBuffers->pData =
+                                                    AllocBlockArray<uint8_t>(MAX_SAMPLE_BUFFER_SIZE, 0);
+            intermediate_buffer_array_[i]->pBuffers->dataLenInBytes = MAX_SAMPLE_BUFFER_SIZE;
+        }
+    }
+
+    cpaDcSetAddressTranslation(instance_, virt2Phys);
+}
+
+Instance::~Instance()
+{
+}
+
+CpaDcInstanceCapabilities Instance::GetCapabilities()
+{
+    CpaDcInstanceCapabilities caps{};
+    cpaDcQueryCapabilities(instance_, &caps);
+
+    return caps;
+}
+
+CpaInstanceInfo2 Instance::GetInfo()
+{
+    CpaInstanceInfo2 info{};
+    cpaDcInstanceGetInfo2(instance_, &info);
+
+    return info;
+}
+
+int Instance::Start()
+{
+    std::lock_guard<std::mutex> lock(mutex_);
+
+    if (started_) {
+        return 0;
+    }
+
+    int ret = cpaDcStartInstance
+    (
+        instance_,
+        num_intermediate_buffer_lists_,
+        intermediate_buffer_array_
+    );
+    if (ret) {
+        return -1;
+    }
+    started_ = true;
+    return 0;
+}
+
+std::vector<std::shared_ptr<Instance>> Instance::Create()
+{
+    std::lock_guard<std::mutex> lock(g_instance_mutex);
+    uint16_t num_instances = 0;
+
+    if (!instances.empty()) {
+        return instances;
+    }
+
+    cpaDcGetNumInstances(&num_instances);
+
+    if (!num_instances) {
+        std::cerr << "No instances found\n";
+        return {};
+    }
+
+    std::vector<CpaInstanceHandle> handles(num_instances);
+    cpaDcGetInstances(num_instances, handles.data());
+
+    for(auto& handle: handles) {
+        instances.emplace_back(std::make_shared<Instance>(handle));
+    }
+
+    return instances;
+}
+
+}

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat_instance.hpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef QATZPP_QAT_INSTANCE_HPP
+#define QATZPP_QAT_INSTANCE_HPP
+
+#include <qat/cpa_dc.h>
+
+#include <memory>
+#include <mutex>
+#include <vector>
+
+namespace qat
+{
+
+class Instance
+{
+public:
+    Instance(CpaInstanceHandle);
+    ~Instance();
+
+    CpaInstanceHandle GetHandle() { return instance_; }
+    CpaDcInstanceCapabilities GetCapabilities();
+    CpaInstanceInfo2 GetInfo();
+
+    int Start(void);
+    static std::vector<std::shared_ptr<Instance>> Create();
+private:
+
+    CpaInstanceHandle instance_;
+    uint16_t num_intermediate_buffer_lists_;
+    CpaBufferList **intermediate_buffer_array_;
+    bool started_;
+
+    std::mutex mutex_;
+};
+
+}
+
+#endif

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat_task.cpp

@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include <qat/cpa.h>
+#include <qat/icp_sal_poll.h>
+
+#include "qat_task.hpp"
+
+namespace qat
+{
+
+QATTask::QATTask(std::shared_ptr<Instance> &qat_instance,
+    std::unique_ptr<IOBuffers> &&buffers,
+    std::unique_ptr<CpaDcRqResults> &&dc_results):
+    qat_instance_(qat_instance),
+    io_buffers_(std::move(buffers)),
+    dc_results_(std::move(dc_results)),
+    completed_(false)
+{
+}
+
+void QATTask::WaitCompletion()
+{
+    if (completed_) {
+        return;
+    }
+
+    while (!completed_) {
+        icp_sal_DcPollInstance(qat_instance_->GetHandle(), 0);
+    }
+}
+
+IOBuffers *QATTask::GetBuffers()
+{
+    return io_buffers_.get();
+}
+
+CpaDcRqResults *QATTask::GetResults()
+{
+    return dc_results_.get();
+}
+
+void dc_callback(void *callback_tag, CpaStatus status)
+{
+    if (!callback_tag) {
+        return;
+    }
+    // Ugly and dangerous
+    QATTask* task = static_cast<QATTask*>(callback_tag);
+    task->completed_ = true;
+}
+
+}

deps/v8/third_party/zlib/contrib/qat/qatzpp/qat_task.hpp

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef QATZPP_WORK_HPP
+#define QATZPP_WORK_HPP
+
+#include <qat/cpa.h>
+
+#include <memory>
+
+#include "io_buffers.h"
+
+namespace qat
+{
+
+class QATTask
+{
+public:
+    explicit QATTask(std::shared_ptr<Instance> &qat_instance,
+                std::unique_ptr<IOBuffers> &&,
+                std::unique_ptr<CpaDcRqResults> &&dc_results);
+
+    QATTask(QATTask &&) = delete;
+    QATTask& operator=(QATTask &&) = delete;
+
+    QATTask(const QATTask &) = delete;
+    QATTask &operator=(const QATTask &) = delete;
+
+    void WaitCompletion();
+
+    IOBuffers *GetBuffers();
+    CpaDcRqResults *GetResults();
+
+private:
+    bool completed_;
+
+    std::shared_ptr<Instance> qat_instance_;
+
+    std::unique_ptr<CpaDcRqResults> dc_results_;
+    std::unique_ptr<IOBuffers> io_buffers_;
+
+    friend void dc_callback(void *, CpaStatus);
+};
+
+void dc_callback(void*, CpaStatus);
+
+}
+
+#endif

deps/v8/third_party/zlib/contrib/qat/qatzpp/session.cpp

@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#include <iostream>
+#include <semaphore.h>
+
+#include "memory.hpp"
+#include "session.hpp"
+
+namespace qat
+{
+
+constexpr CpaDcHuffType kHuffType = CPA_DC_HT_FULL_DYNAMIC;
+
+DeflateSession::DeflateSession(
+    std::shared_ptr<Instance> &qat_instance,
+    CpaDcCompLvl comp_level, CpaDcChecksum checksum,
+    uint32_t numa_node):
+    qat_instance_(qat_instance)
+{
+    uint32_t session_size = 0;
+    uint32_t ctx_size = 0;
+
+    CpaDcSessionSetupData sd{};
+    sd.compLevel = comp_level;
+    sd.compType = CPA_DC_DEFLATE;
+    sd.huffType = kHuffType;
+    sd.autoSelectBestHuffmanTree = CPA_DC_ASB_UNCOMP_STATIC_DYNAMIC_WITH_STORED_HDRS;
+    sd.sessDirection = CPA_DC_DIR_COMBINED;
+    sd.sessState = CPA_DC_STATELESS;
+    sd.checksum = checksum;
+
+    cpaDcGetSessionSize(qat_instance_->GetHandle(), &sd, &session_size, &ctx_size);
+    session_ = AllocBlockArray<uint8_t>(session_size, numa_node);
+
+    cpaDcInitSession(
+        qat_instance_->GetHandle(),
+        session_,
+        &sd,
+        nullptr, // No context for stateless operations
+        &dc_callback
+    );
+
+}
+
+DeflateSession::~DeflateSession()
+{
+    if (session_) {
+        cpaDcRemoveSession(qat_instance_->GetHandle(), session_);
+        Free(session_);
+    }
+
+    session_ = nullptr;
+}
+
+std::unique_ptr<QATTask> DeflateSession::Deflate(
+    std::unique_ptr<IOBuffers> &&buffers,
+    bool flush_final)
+{
+    CpaDcOpData op_data{};
+    op_data.flushFlag = (flush_final) ?
+        CPA_DC_FLUSH_FINAL : CPA_DC_FLUSH_FULL;
+    op_data.compressAndVerify = CPA_TRUE;
+    op_data.inputSkipData.skipMode = CPA_DC_SKIP_DISABLED;
+    op_data.outputSkipData.skipMode = CPA_DC_SKIP_DISABLED;
+
+    auto task = std::make_unique<QATTask>(
+        qat_instance_, std::move(buffers),
+        std::make_unique<CpaDcRqResults>()
+    );
+
+    cpaDcCompressData2(
+        qat_instance_->GetHandle(),
+        session_,
+        &task->GetBuffers()->GetSrc()->list,
+        &task->GetBuffers()->GetDst()->list,
+        &op_data,
+        task->GetResults(),
+        static_cast<void*>(task.get())
+    );
+
+    return std::move(task);
+}
+
+std::unique_ptr<QATTask> DeflateSession::Inflate(std::unique_ptr<IOBuffers> &&buffers)
+{
+    CpaDcOpData op_data = {};
+    op_data.flushFlag = CPA_DC_FLUSH_FINAL;
+    op_data.compressAndVerify = CPA_TRUE;
+    op_data.inputSkipData.skipMode = CPA_DC_SKIP_DISABLED;
+    op_data.outputSkipData.skipMode = CPA_DC_SKIP_DISABLED;
+
+    auto task = std::make_unique<QATTask>(
+        qat_instance_, std::move(buffers),
+        std::make_unique<CpaDcRqResults>()
+    );
+
+    cpaDcDecompressData2(
+        qat_instance_->GetHandle(),
+        session_,
+        &task->GetBuffers()->GetSrc()->list,
+        &task->GetBuffers()->GetDst()->list,
+        &op_data,
+        task->GetResults(),
+        static_cast<void*>(task.get())
+    );
+
+    return std::move(task);
+}
+
+uint32_t DeflateSession::GetDeflateBound(uint32_t input_size)
+{
+    uint32_t output_size = 0;
+
+    cpaDcDeflateCompressBound(
+        qat_instance_->GetHandle(),
+        kHuffType,
+        input_size, &output_size
+    );
+
+    return output_size;
+}
+
+}

deps/v8/third_party/zlib/contrib/qat/qatzpp/session.hpp

@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2024 Intel Corporation. All rights reserved.
+ * Authors:
+ *  Gustavo A Espinoza   <gustavo.adolfo.espinoza.quintero@intel.com>
+ *                       <gustavoaespinozaq@hotmail.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+#ifndef QATZPP_SESSION_HPP
+#define QATZPP_SESSION_HPP
+
+#include <qat/cpa.h>
+#include <qat/cpa_dc.h>
+
+#include <memory>
+
+#include "io_buffers.h"
+#include "qat_task.hpp"
+
+namespace qat
+{
+
+class DeflateSession
+{
+public:
+    DeflateSession(
+        std::shared_ptr<Instance> &, CpaDcCompLvl,
+        CpaDcChecksum, uint32_t numa_node);
+    ~DeflateSession();
+
+    std::unique_ptr<QATTask> Deflate(std::unique_ptr<IOBuffers> &&buffers, bool flush_final);
+    std::unique_ptr<QATTask> Inflate(std::unique_ptr<IOBuffers> &&buffers);
+
+    uint32_t GetDeflateBound(uint32_t input_size);
+
+    std::shared_ptr<Instance> getInstance() { return qat_instance_; }
+
+private:
+    std::shared_ptr<Instance> qat_instance_;
+    CpaDcSessionHandle session_;
+};
+
+}
+
+#endif

deps/v8/third_party/zlib/cpu_features.c

@@ -0,0 +1,213 @@
+/* cpu_features.c -- Processor features detection.
+ *
+ * Copyright 2018 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#include "cpu_features.h"
+#include "zutil.h"
+
+#include <stdint.h>
+#if defined(_MSC_VER)
+#include <intrin.h>
+#elif defined(ADLER32_SIMD_SSSE3)
+#include <cpuid.h>
+#endif
+
+/* TODO(cavalcantii): remove checks for x86_flags on deflate.
+ */
+#if defined(ARMV8_OS_MACOS)
+/* Crypto extensions (crc32/pmull) are a baseline feature in ARMv8.1-A, and
+ * OSX running on arm64 is new enough that these can be assumed without
+ * runtime detection.
+ */
+int ZLIB_INTERNAL arm_cpu_enable_crc32 = 1;
+int ZLIB_INTERNAL arm_cpu_enable_pmull = 1;
+#else
+int ZLIB_INTERNAL arm_cpu_enable_crc32 = 0;
+int ZLIB_INTERNAL arm_cpu_enable_pmull = 0;
+#endif
+int ZLIB_INTERNAL x86_cpu_enable_sse2 = 0;
+int ZLIB_INTERNAL x86_cpu_enable_ssse3 = 0;
+int ZLIB_INTERNAL x86_cpu_enable_simd = 0;
+int ZLIB_INTERNAL x86_cpu_enable_avx512 = 0;
+
+int ZLIB_INTERNAL riscv_cpu_enable_rvv = 0;
+int ZLIB_INTERNAL riscv_cpu_enable_vclmul = 0;
+
+#ifndef CPU_NO_SIMD
+
+#if defined(ARMV8_OS_ANDROID) || defined(ARMV8_OS_LINUX) || \
+    defined(ARMV8_OS_FUCHSIA) || defined(ARMV8_OS_IOS)
+#include <pthread.h>
+#endif
+
+#if defined(ARMV8_OS_ANDROID)
+#include <cpu-features.h>
+#elif defined(ARMV8_OS_LINUX)
+#include <asm/hwcap.h>
+#include <sys/auxv.h>
+#elif defined(ARMV8_OS_FUCHSIA)
+#include <zircon/features.h>
+#include <zircon/syscalls.h>
+#include <zircon/types.h>
+#elif defined(ARMV8_OS_WINDOWS) || defined(X86_WINDOWS)
+#include <windows.h>
+#elif defined(ARMV8_OS_IOS)
+#include <sys/sysctl.h>
+#elif !defined(_MSC_VER)
+#include <pthread.h>
+#else
+#error cpu_features.c CPU feature detection in not defined for your platform
+#endif
+
+#if !defined(CPU_NO_SIMD) && !defined(ARMV8_OS_MACOS)
+static void _cpu_check_features(void);
+#endif
+
+#if defined(ARMV8_OS_ANDROID) || defined(ARMV8_OS_LINUX) || \
+    defined(ARMV8_OS_MACOS) || defined(ARMV8_OS_FUCHSIA) || \
+    defined(X86_NOT_WINDOWS) || defined(ARMV8_OS_IOS) || \
+    defined(RISCV_RVV)
+#if !defined(ARMV8_OS_MACOS)
+// _cpu_check_features() doesn't need to do anything on mac/arm since all
+// features are known at build time, so don't call it.
+// Do provide cpu_check_features() (with a no-op implementation) so that we
+// don't have to make all callers of it check for mac/arm.
+static pthread_once_t cpu_check_inited_once = PTHREAD_ONCE_INIT;
+#endif
+void ZLIB_INTERNAL cpu_check_features(void)
+{
+#if !defined(ARMV8_OS_MACOS)
+    pthread_once(&cpu_check_inited_once, _cpu_check_features);
+#endif
+}
+#elif defined(ARMV8_OS_WINDOWS) || defined(X86_WINDOWS)
+static INIT_ONCE cpu_check_inited_once = INIT_ONCE_STATIC_INIT;
+static BOOL CALLBACK _cpu_check_features_forwarder(PINIT_ONCE once, PVOID param, PVOID* context)
+{
+    _cpu_check_features();
+    return TRUE;
+}
+void ZLIB_INTERNAL cpu_check_features(void)
+{
+    InitOnceExecuteOnce(&cpu_check_inited_once, _cpu_check_features_forwarder,
+                        NULL, NULL);
+}
+#endif
+
+#if (defined(__ARM_NEON__) || defined(__ARM_NEON))
+#if !defined(ARMV8_OS_MACOS)
+/*
+ * See http://bit.ly/2CcoEsr for run-time detection of ARM features and also
+ * crbug.com/931275 for android_getCpuFeatures() use in the Android sandbox.
+ */
+static void _cpu_check_features(void)
+{
+#if defined(ARMV8_OS_ANDROID) && defined(__aarch64__)
+    uint64_t features = android_getCpuFeatures();
+    arm_cpu_enable_crc32 = !!(features & ANDROID_CPU_ARM64_FEATURE_CRC32);
+    arm_cpu_enable_pmull = !!(features & ANDROID_CPU_ARM64_FEATURE_PMULL);
+#elif defined(ARMV8_OS_ANDROID) /* aarch32 */
+    uint64_t features = android_getCpuFeatures();
+    arm_cpu_enable_crc32 = !!(features & ANDROID_CPU_ARM_FEATURE_CRC32);
+    arm_cpu_enable_pmull = !!(features & ANDROID_CPU_ARM_FEATURE_PMULL);
+#elif defined(ARMV8_OS_LINUX) && defined(__aarch64__)
+    unsigned long features = getauxval(AT_HWCAP);
+    arm_cpu_enable_crc32 = !!(features & HWCAP_CRC32);
+    arm_cpu_enable_pmull = !!(features & HWCAP_PMULL);
+#elif defined(ARMV8_OS_LINUX) && (defined(__ARM_NEON) || defined(__ARM_NEON__))
+    /* Query HWCAP2 for ARMV8-A SoCs running in aarch32 mode */
+    unsigned long features = getauxval(AT_HWCAP2);
+    arm_cpu_enable_crc32 = !!(features & HWCAP2_CRC32);
+    arm_cpu_enable_pmull = !!(features & HWCAP2_PMULL);
+#elif defined(ARMV8_OS_FUCHSIA)
+    uint32_t features;
+    zx_status_t rc = zx_system_get_features(ZX_FEATURE_KIND_CPU, &features);
+    if (rc != ZX_OK || (features & ZX_ARM64_FEATURE_ISA_ASIMD) == 0)
+        return;  /* Report nothing if ASIMD(NEON) is missing */
+    arm_cpu_enable_crc32 = !!(features & ZX_ARM64_FEATURE_ISA_CRC32);
+    arm_cpu_enable_pmull = !!(features & ZX_ARM64_FEATURE_ISA_PMULL);
+#elif defined(ARMV8_OS_WINDOWS)
+    arm_cpu_enable_crc32 = IsProcessorFeaturePresent(PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE);
+    arm_cpu_enable_pmull = IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE);
+#elif defined(ARMV8_OS_IOS)
+    // Determine what features are supported dynamically. This code is applicable to macOS
+    // as well if we wish to do that dynamically on that platform in the future.
+    // See https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_instruction_set_characteristics
+    int val = 0;
+    size_t len = sizeof(val);
+    arm_cpu_enable_crc32 = sysctlbyname("hw.optional.armv8_crc32", &val, &len, 0, 0) == 0
+               && val != 0;
+    val = 0;
+    len = sizeof(val);
+    arm_cpu_enable_pmull = sysctlbyname("hw.optional.arm.FEAT_PMULL", &val, &len, 0, 0) == 0
+               && val != 0;
+#endif
+}
+#endif
+#elif defined(X86_NOT_WINDOWS) || defined(X86_WINDOWS)
+/*
+ * iOS@x86 (i.e. emulator) is another special case where we disable
+ * SIMD optimizations.
+ */
+#ifndef CPU_NO_SIMD
+/* On x86 we simply use a instruction to check the CPU features.
+ * (i.e. CPUID).
+ */
+#ifdef CRC32_SIMD_AVX512_PCLMUL
+#include <immintrin.h>
+#include <xsaveintrin.h>
+#endif
+static void _cpu_check_features(void)
+{
+    int x86_cpu_has_sse2;
+    int x86_cpu_has_ssse3;
+    int x86_cpu_has_sse42;
+    int x86_cpu_has_pclmulqdq;
+    int abcd[4];
+
+#ifdef _MSC_VER
+    __cpuid(abcd, 1);
+#else
+    __cpuid(1, abcd[0], abcd[1], abcd[2], abcd[3]);
+#endif
+
+    x86_cpu_has_sse2 = abcd[3] & 0x4000000;
+    x86_cpu_has_ssse3 = abcd[2] & 0x000200;
+    x86_cpu_has_sse42 = abcd[2] & 0x100000;
+    x86_cpu_has_pclmulqdq = abcd[2] & 0x2;
+
+    x86_cpu_enable_sse2 = x86_cpu_has_sse2;
+
+    x86_cpu_enable_ssse3 = x86_cpu_has_ssse3;
+
+    x86_cpu_enable_simd = x86_cpu_has_sse2 &&
+                          x86_cpu_has_sse42 &&
+                          x86_cpu_has_pclmulqdq;
+
+#ifdef CRC32_SIMD_AVX512_PCLMUL
+    x86_cpu_enable_avx512 = _xgetbv(0) & 0x00000040;
+#endif
+}
+#endif // x86 & NO_SIMD
+
+#elif defined(RISCV_RVV)
+#include <sys/auxv.h>
+
+#ifndef ZLIB_HWCAP_RVV
+#define ZLIB_HWCAP_RVV (1 << ('v' - 'a'))
+#endif
+
+/* TODO(cavalcantii)
+ * - add support for Android@RISCV i.e. __riscv_hwprobe().
+ * - detect vclmul (crypto extensions).
+ */
+static void _cpu_check_features(void)
+{
+  unsigned long features = getauxval(AT_HWCAP);
+  riscv_cpu_enable_rvv = !!(features & ZLIB_HWCAP_RVV);
+}
+#endif // ARM | x86 | RISCV
+#endif // NO SIMD CPU

deps/v8/third_party/zlib/cpu_features.h

@@ -0,0 +1,22 @@
+/* cpu_features.h -- Processor features detection.
+ *
+ * Copyright 2018 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#include "zlib.h"
+
+/* TODO(cavalcantii): remove checks for x86_flags on deflate.
+ */
+extern int arm_cpu_enable_crc32;
+extern int arm_cpu_enable_pmull;
+extern int x86_cpu_enable_sse2;
+extern int x86_cpu_enable_ssse3;
+extern int x86_cpu_enable_simd;
+extern int x86_cpu_enable_avx512;
+
+extern int riscv_cpu_enable_rvv;
+extern int riscv_cpu_enable_vclmul;
+
+void cpu_check_features(void);

deps/v8/third_party/zlib/crc32_simd.c

@@ -0,0 +1,622 @@
+/* crc32_simd.c
+ *
+ * Copyright 2017 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#include "crc32_simd.h"
+#if defined(CRC32_SIMD_AVX512_PCLMUL)
+
+/*
+ * crc32_avx512_simd_(): compute the crc32 of the buffer, where the buffer
+ * length must be at least 256, and a multiple of 64. Based on:
+ *
+ * "Fast CRC Computation for Generic Polynomials Using PCLMULQDQ Instruction"
+ *  V. Gopal, E. Ozturk, et al., 2009, http://intel.ly/2ySEwL0
+ */
+
+#include <emmintrin.h>
+#include <smmintrin.h>
+#include <wmmintrin.h>
+#include <immintrin.h>
+
+uint32_t ZLIB_INTERNAL crc32_avx512_simd_(  /* AVX512+PCLMUL */
+    const unsigned char *buf,
+    z_size_t len,
+    uint32_t crc)
+{
+    /*
+     * Definitions of the bit-reflected domain constants k1,k2,k3,k4
+     * are similar to those given at the end of the paper, and remaining
+     * constants and CRC32+Barrett polynomials remain unchanged.
+     *
+     * Replace the index of x from 128 to 512. As follows:
+     * k1 = ( x ^ ( 512 * 4 + 32 ) mod P(x) << 32 )' << 1 = 0x011542778a
+     * k2 = ( x ^ ( 512 * 4 - 32 ) mod P(x) << 32 )' << 1 = 0x01322d1430
+     * k3 = ( x ^ ( 512 + 32 ) mod P(x) << 32 )' << 1 = 0x0154442bd4
+     * k4 = ( x ^ ( 512 - 32 ) mod P(x) << 32 )' << 1 = 0x01c6e41596
+     */
+    static const uint64_t zalign(64) k1k2[] = { 0x011542778a, 0x01322d1430,
+                                                0x011542778a, 0x01322d1430,
+                                                0x011542778a, 0x01322d1430,
+                                                0x011542778a, 0x01322d1430 };
+    static const uint64_t zalign(64) k3k4[] = { 0x0154442bd4, 0x01c6e41596,
+                                                0x0154442bd4, 0x01c6e41596,
+                                                0x0154442bd4, 0x01c6e41596,
+                                                0x0154442bd4, 0x01c6e41596 };
+    static const uint64_t zalign(16) k5k6[] = { 0x01751997d0, 0x00ccaa009e };
+    static const uint64_t zalign(16) k7k8[] = { 0x0163cd6124, 0x0000000000 };
+    static const uint64_t zalign(16) poly[] = { 0x01db710641, 0x01f7011641 };
+    __m512i x0, x1, x2, x3, x4, x5, x6, x7, x8, y5, y6, y7, y8;
+    __m128i a0, a1, a2, a3;
+
+    /*
+     * There's at least one block of 256.
+     */
+    x1 = _mm512_loadu_si512((__m512i *)(buf + 0x00));
+    x2 = _mm512_loadu_si512((__m512i *)(buf + 0x40));
+    x3 = _mm512_loadu_si512((__m512i *)(buf + 0x80));
+    x4 = _mm512_loadu_si512((__m512i *)(buf + 0xC0));
+
+    x1 = _mm512_xor_si512(x1, _mm512_castsi128_si512(_mm_cvtsi32_si128(crc)));
+
+    x0 = _mm512_load_si512((__m512i *)k1k2);
+
+    buf += 256;
+    len -= 256;
+
+    /*
+     * Parallel fold blocks of 256, if any.
+     */
+    while (len >= 256)
+    {
+        x5 = _mm512_clmulepi64_epi128(x1, x0, 0x00);
+        x6 = _mm512_clmulepi64_epi128(x2, x0, 0x00);
+        x7 = _mm512_clmulepi64_epi128(x3, x0, 0x00);
+        x8 = _mm512_clmulepi64_epi128(x4, x0, 0x00);
+
+
+        x1 = _mm512_clmulepi64_epi128(x1, x0, 0x11);
+        x2 = _mm512_clmulepi64_epi128(x2, x0, 0x11);
+        x3 = _mm512_clmulepi64_epi128(x3, x0, 0x11);
+        x4 = _mm512_clmulepi64_epi128(x4, x0, 0x11);
+
+        y5 = _mm512_loadu_si512((__m512i *)(buf + 0x00));
+        y6 = _mm512_loadu_si512((__m512i *)(buf + 0x40));
+        y7 = _mm512_loadu_si512((__m512i *)(buf + 0x80));
+        y8 = _mm512_loadu_si512((__m512i *)(buf + 0xC0));
+
+        x1 = _mm512_xor_si512(x1, x5);
+        x2 = _mm512_xor_si512(x2, x6);
+        x3 = _mm512_xor_si512(x3, x7);
+        x4 = _mm512_xor_si512(x4, x8);
+
+        x1 = _mm512_xor_si512(x1, y5);
+        x2 = _mm512_xor_si512(x2, y6);
+        x3 = _mm512_xor_si512(x3, y7);
+        x4 = _mm512_xor_si512(x4, y8);
+
+        buf += 256;
+        len -= 256;
+    }
+
+    /*
+     * Fold into 512-bits.
+     */
+    x0 = _mm512_load_si512((__m512i *)k3k4);
+
+    x5 = _mm512_clmulepi64_epi128(x1, x0, 0x00);
+    x1 = _mm512_clmulepi64_epi128(x1, x0, 0x11);
+    x1 = _mm512_xor_si512(x1, x2);
+    x1 = _mm512_xor_si512(x1, x5);
+
+    x5 = _mm512_clmulepi64_epi128(x1, x0, 0x00);
+    x1 = _mm512_clmulepi64_epi128(x1, x0, 0x11);
+    x1 = _mm512_xor_si512(x1, x3);
+    x1 = _mm512_xor_si512(x1, x5);
+
+    x5 = _mm512_clmulepi64_epi128(x1, x0, 0x00);
+    x1 = _mm512_clmulepi64_epi128(x1, x0, 0x11);
+    x1 = _mm512_xor_si512(x1, x4);
+    x1 = _mm512_xor_si512(x1, x5);
+
+    /*
+     * Single fold blocks of 64, if any.
+     */
+    while (len >= 64)
+    {
+        x2 = _mm512_loadu_si512((__m512i *)buf);
+
+        x5 = _mm512_clmulepi64_epi128(x1, x0, 0x00);
+        x1 = _mm512_clmulepi64_epi128(x1, x0, 0x11);
+        x1 = _mm512_xor_si512(x1, x2);
+        x1 = _mm512_xor_si512(x1, x5);
+
+        buf += 64;
+        len -= 64;
+    }
+
+    /*
+     * Fold 512-bits to 384-bits.
+     */
+    a0 = _mm_load_si128((__m128i *)k5k6);
+
+    a1 = _mm512_extracti32x4_epi32(x1, 0);
+    a2 = _mm512_extracti32x4_epi32(x1, 1);
+
+    a3 = _mm_clmulepi64_si128(a1, a0, 0x00);
+    a1 = _mm_clmulepi64_si128(a1, a0, 0x11);
+
+    a1 = _mm_xor_si128(a1, a3);
+    a1 = _mm_xor_si128(a1, a2);
+
+    /*
+     * Fold 384-bits to 256-bits.
+     */
+    a2 = _mm512_extracti32x4_epi32(x1, 2);
+    a3 = _mm_clmulepi64_si128(a1, a0, 0x00);
+    a1 = _mm_clmulepi64_si128(a1, a0, 0x11);
+    a1 = _mm_xor_si128(a1, a3);
+    a1 = _mm_xor_si128(a1, a2);
+
+    /*
+     * Fold 256-bits to 128-bits.
+     */
+    a2 = _mm512_extracti32x4_epi32(x1, 3);
+    a3 = _mm_clmulepi64_si128(a1, a0, 0x00);
+    a1 = _mm_clmulepi64_si128(a1, a0, 0x11);
+    a1 = _mm_xor_si128(a1, a3);
+    a1 = _mm_xor_si128(a1, a2);
+
+    /*
+     * Fold 128-bits to 64-bits.
+     */
+    a2 = _mm_clmulepi64_si128(a1, a0, 0x10);
+    a3 = _mm_setr_epi32(~0, 0, ~0, 0);
+    a1 = _mm_srli_si128(a1, 8);
+    a1 = _mm_xor_si128(a1, a2);
+
+    a0 = _mm_loadl_epi64((__m128i*)k7k8);
+    a2 = _mm_srli_si128(a1, 4);
+    a1 = _mm_and_si128(a1, a3);
+    a1 = _mm_clmulepi64_si128(a1, a0, 0x00);
+    a1 = _mm_xor_si128(a1, a2);
+
+    /*
+     * Barret reduce to 32-bits.
+     */
+    a0 = _mm_load_si128((__m128i*)poly);
+
+    a2 = _mm_and_si128(a1, a3);
+    a2 = _mm_clmulepi64_si128(a2, a0, 0x10);
+    a2 = _mm_and_si128(a2, a3);
+    a2 = _mm_clmulepi64_si128(a2, a0, 0x00);
+    a1 = _mm_xor_si128(a1, a2);
+
+    /*
+     * Return the crc32.
+     */
+    return _mm_extract_epi32(a1, 1);
+}
+
+#endif
+#if defined(CRC32_SIMD_SSE42_PCLMUL)
+
+/*
+ * crc32_sse42_simd_(): compute the crc32 of the buffer, where the buffer
+ * length must be at least 64, and a multiple of 16.
+ */
+
+#include <emmintrin.h>
+#include <smmintrin.h>
+#include <wmmintrin.h>
+
+uint32_t ZLIB_INTERNAL crc32_sse42_simd_(  /* SSE4.2+PCLMUL */
+    const unsigned char *buf,
+    z_size_t len,
+    uint32_t crc)
+{
+    /*
+     * Definitions of the bit-reflected domain constants k1,k2,k3, etc and
+     * the CRC32+Barrett polynomials given at the end of the paper.
+     */
+    static const uint64_t zalign(16) k1k2[] = { 0x0154442bd4, 0x01c6e41596 };
+    static const uint64_t zalign(16) k3k4[] = { 0x01751997d0, 0x00ccaa009e };
+    static const uint64_t zalign(16) k5k0[] = { 0x0163cd6124, 0x0000000000 };
+    static const uint64_t zalign(16) poly[] = { 0x01db710641, 0x01f7011641 };
+
+    __m128i x0, x1, x2, x3, x4, x5, x6, x7, x8, y5, y6, y7, y8;
+
+    /*
+     * There's at least one block of 64.
+     */
+    x1 = _mm_loadu_si128((__m128i *)(buf + 0x00));
+    x2 = _mm_loadu_si128((__m128i *)(buf + 0x10));
+    x3 = _mm_loadu_si128((__m128i *)(buf + 0x20));
+    x4 = _mm_loadu_si128((__m128i *)(buf + 0x30));
+
+    x1 = _mm_xor_si128(x1, _mm_cvtsi32_si128(crc));
+
+    x0 = _mm_load_si128((__m128i *)k1k2);
+
+    buf += 64;
+    len -= 64;
+
+    /*
+     * Parallel fold blocks of 64, if any.
+     */
+    while (len >= 64)
+    {
+        x5 = _mm_clmulepi64_si128(x1, x0, 0x00);
+        x6 = _mm_clmulepi64_si128(x2, x0, 0x00);
+        x7 = _mm_clmulepi64_si128(x3, x0, 0x00);
+        x8 = _mm_clmulepi64_si128(x4, x0, 0x00);
+
+        x1 = _mm_clmulepi64_si128(x1, x0, 0x11);
+        x2 = _mm_clmulepi64_si128(x2, x0, 0x11);
+        x3 = _mm_clmulepi64_si128(x3, x0, 0x11);
+        x4 = _mm_clmulepi64_si128(x4, x0, 0x11);
+
+        y5 = _mm_loadu_si128((__m128i *)(buf + 0x00));
+        y6 = _mm_loadu_si128((__m128i *)(buf + 0x10));
+        y7 = _mm_loadu_si128((__m128i *)(buf + 0x20));
+        y8 = _mm_loadu_si128((__m128i *)(buf + 0x30));
+
+        x1 = _mm_xor_si128(x1, x5);
+        x2 = _mm_xor_si128(x2, x6);
+        x3 = _mm_xor_si128(x3, x7);
+        x4 = _mm_xor_si128(x4, x8);
+
+        x1 = _mm_xor_si128(x1, y5);
+        x2 = _mm_xor_si128(x2, y6);
+        x3 = _mm_xor_si128(x3, y7);
+        x4 = _mm_xor_si128(x4, y8);
+
+        buf += 64;
+        len -= 64;
+    }
+
+    /*
+     * Fold into 128-bits.
+     */
+    x0 = _mm_load_si128((__m128i *)k3k4);
+
+    x5 = _mm_clmulepi64_si128(x1, x0, 0x00);
+    x1 = _mm_clmulepi64_si128(x1, x0, 0x11);
+    x1 = _mm_xor_si128(x1, x2);
+    x1 = _mm_xor_si128(x1, x5);
+
+    x5 = _mm_clmulepi64_si128(x1, x0, 0x00);
+    x1 = _mm_clmulepi64_si128(x1, x0, 0x11);
+    x1 = _mm_xor_si128(x1, x3);
+    x1 = _mm_xor_si128(x1, x5);
+
+    x5 = _mm_clmulepi64_si128(x1, x0, 0x00);
+    x1 = _mm_clmulepi64_si128(x1, x0, 0x11);
+    x1 = _mm_xor_si128(x1, x4);
+    x1 = _mm_xor_si128(x1, x5);
+
+    /*
+     * Single fold blocks of 16, if any.
+     */
+    while (len >= 16)
+    {
+        x2 = _mm_loadu_si128((__m128i *)buf);
+
+        x5 = _mm_clmulepi64_si128(x1, x0, 0x00);
+        x1 = _mm_clmulepi64_si128(x1, x0, 0x11);
+        x1 = _mm_xor_si128(x1, x2);
+        x1 = _mm_xor_si128(x1, x5);
+
+        buf += 16;
+        len -= 16;
+    }
+
+    /*
+     * Fold 128-bits to 64-bits.
+     */
+    x2 = _mm_clmulepi64_si128(x1, x0, 0x10);
+    x3 = _mm_setr_epi32(~0, 0, ~0, 0);
+    x1 = _mm_srli_si128(x1, 8);
+    x1 = _mm_xor_si128(x1, x2);
+
+    x0 = _mm_loadl_epi64((__m128i*)k5k0);
+
+    x2 = _mm_srli_si128(x1, 4);
+    x1 = _mm_and_si128(x1, x3);
+    x1 = _mm_clmulepi64_si128(x1, x0, 0x00);
+    x1 = _mm_xor_si128(x1, x2);
+
+    /*
+     * Barret reduce to 32-bits.
+     */
+    x0 = _mm_load_si128((__m128i*)poly);
+
+    x2 = _mm_and_si128(x1, x3);
+    x2 = _mm_clmulepi64_si128(x2, x0, 0x10);
+    x2 = _mm_and_si128(x2, x3);
+    x2 = _mm_clmulepi64_si128(x2, x0, 0x00);
+    x1 = _mm_xor_si128(x1, x2);
+
+    /*
+     * Return the crc32.
+     */
+    return _mm_extract_epi32(x1, 1);
+}
+
+#elif defined(CRC32_ARMV8_CRC32)
+
+/* CRC32 checksums using ARMv8-a crypto instructions.
+ */
+
+#if defined(__clang__)
+/* We need some extra types for using PMULL.
+ */
+#if defined(__aarch64__)
+#include <arm_neon.h>
+#include <arm_acle.h>
+#endif
+
+/* CRC32 intrinsics are #ifdef'ed out of arm_acle.h unless we build with an
+ * armv8 target, which is incompatible with ThinLTO optimizations on Android.
+ * (Namely, mixing and matching different module-level targets makes ThinLTO
+ * warn, and Android defaults to armv7-a. This restriction does not apply to
+ * function-level `target`s, however.)
+ *
+ * Since we only need four crc intrinsics, and since clang's implementation of
+ * those are just wrappers around compiler builtins, it's simplest to #define
+ * those builtins directly. If this #define list grows too much (or we depend on
+ * an intrinsic that isn't a trivial wrapper), we may have to find a better way
+ * to go about this.
+ *
+ * NOTE: clang currently complains that "'+soft-float-abi' is not a recognized
+ * feature for this target (ignoring feature)." This appears to be a harmless
+ * bug in clang.
+ *
+ * These definitions must appear *after* including arm_acle.h otherwise that
+ * header may end up defining functions named __builtin_arm_crc32* that call
+ * themselves, creating an infinite loop when the intrinsic is called.
+ */
+/* XXX: Cannot hook into builtins with XCode for arm64. */
+#if !defined(ARMV8_OS_MACOS)
+#define __crc32b __builtin_arm_crc32b
+#define __crc32d __builtin_arm_crc32d
+#define __crc32w __builtin_arm_crc32w
+#define __crc32cw __builtin_arm_crc32cw
+#endif
+
+#if defined(__aarch64__)
+#define TARGET_ARMV8_WITH_CRC __attribute__((target("arch=armv8-a+aes+crc")))
+#else  // !defined(__aarch64__)
+#define TARGET_ARMV8_WITH_CRC __attribute__((target("crc")))
+#endif  // defined(__aarch64__)
+
+#elif defined(__GNUC__)
+/* For GCC, we are setting CRC extensions at module level, so ThinLTO is not
+ * allowed. We can just include arm_acle.h.
+ */
+#include <arm_acle.h>
+#include <arm_neon.h>
+#define TARGET_ARMV8_WITH_CRC __attribute__((target("arch=armv8-a+crc+crypto")))
+#else  // !defined(__GNUC__) && !defined(_aarch64__)
+#error ARM CRC32 SIMD extensions only supported for Clang and GCC
+#endif
+
+TARGET_ARMV8_WITH_CRC
+uint32_t ZLIB_INTERNAL armv8_crc32_little(
+    const unsigned char *buf,
+    z_size_t len,
+    uint32_t crc)
+{
+    uint32_t c = (uint32_t) ~crc;
+
+    while (len && ((uintptr_t)buf & 7)) {
+        c = __crc32b(c, *buf++);
+        --len;
+    }
+
+    const uint64_t *buf8 = (const uint64_t *)buf;
+
+    while (len >= 64) {
+        c = __crc32d(c, *buf8++);
+        c = __crc32d(c, *buf8++);
+        c = __crc32d(c, *buf8++);
+        c = __crc32d(c, *buf8++);
+
+        c = __crc32d(c, *buf8++);
+        c = __crc32d(c, *buf8++);
+        c = __crc32d(c, *buf8++);
+        c = __crc32d(c, *buf8++);
+        len -= 64;
+    }
+
+    while (len >= 8) {
+        c = __crc32d(c, *buf8++);
+        len -= 8;
+    }
+
+    buf = (const unsigned char *)buf8;
+
+    while (len--) {
+        c = __crc32b(c, *buf++);
+    }
+
+    return ~c;
+}
+
+#if defined(__aarch64__) || defined(ARMV8_OS_MACOS) /* aarch64 specific code. */
+
+/*
+ * crc32_pmull_simd_(): compute the crc32 of the buffer, where the buffer
+ * length must be at least 64, and a multiple of 16. Based on:
+ *
+ * "Fast CRC Computation for Generic Polynomials Using PCLMULQDQ Instruction"
+ *  V. Gopal, E. Ozturk, et al., 2009, http://intel.ly/2ySEwL0
+ */
+TARGET_ARMV8_WITH_CRC
+static inline uint8x16_t pmull_lo(const uint64x2_t a, const uint64x2_t b)
+{
+    uint8x16_t r;
+    __asm__ __volatile__ ("pmull  %0.1q, %1.1d, %2.1d \n\t"
+        : "=w" (r) : "w" (a), "w" (b) );
+    return r;
+}
+
+TARGET_ARMV8_WITH_CRC
+static inline uint8x16_t pmull_01(const uint64x2_t a, const uint64x2_t b)
+{
+    uint8x16_t r;
+    __asm__ __volatile__ ("pmull  %0.1q, %1.1d, %2.1d \n\t"
+        : "=w" (r) : "w" (a), "w" (vgetq_lane_u64(b, 1)) );
+    return r;
+}
+
+TARGET_ARMV8_WITH_CRC
+static inline uint8x16_t pmull_hi(const uint64x2_t a, const uint64x2_t b)
+{
+    uint8x16_t r;
+    __asm__ __volatile__ ("pmull2 %0.1q, %1.2d, %2.2d \n\t"
+        : "=w" (r) : "w" (a), "w" (b) );
+    return r;
+}
+
+TARGET_ARMV8_WITH_CRC
+uint32_t ZLIB_INTERNAL armv8_crc32_pmull_little(
+    const unsigned char *buf,
+    z_size_t len,
+    uint32_t crc)
+{
+    /*
+     * Definitions of the bit-reflected domain constants k1,k2,k3, etc and
+     * the CRC32+Barrett polynomials given at the end of the paper.
+     */
+    static const uint64_t zalign(16) k1k2[] = { 0x0154442bd4, 0x01c6e41596 };
+    static const uint64_t zalign(16) k3k4[] = { 0x01751997d0, 0x00ccaa009e };
+    static const uint64_t zalign(16) k5k0[] = { 0x0163cd6124, 0x0000000000 };
+    static const uint64_t zalign(16) poly[] = { 0x01db710641, 0x01f7011641 };
+
+    uint64x2_t x0, x1, x2, x3, x4, x5, x6, x7, x8, y5, y6, y7, y8;
+
+    /*
+     * There's at least one block of 64.
+     */
+    x1 = vld1q_u64((const uint64_t *)(buf + 0x00));
+    x2 = vld1q_u64((const uint64_t *)(buf + 0x10));
+    x3 = vld1q_u64((const uint64_t *)(buf + 0x20));
+    x4 = vld1q_u64((const uint64_t *)(buf + 0x30));
+
+    x1 = veorq_u64(x1, (uint64x2_t) vsetq_lane_u32(crc, vdupq_n_u32(0), 0));
+
+    x0 = vld1q_u64(k1k2);
+
+    buf += 64;
+    len -= 64;
+
+    /*
+     * Parallel fold blocks of 64, if any.
+     */
+    while (len >= 64)
+    {
+        x5 = (uint64x2_t) pmull_lo(x1, x0);
+        x6 = (uint64x2_t) pmull_lo(x2, x0);
+        x7 = (uint64x2_t) pmull_lo(x3, x0);
+        x8 = (uint64x2_t) pmull_lo(x4, x0);
+
+        y5 = vld1q_u64((const uint64_t *)(buf + 0x00));
+        y6 = vld1q_u64((const uint64_t *)(buf + 0x10));
+        y7 = vld1q_u64((const uint64_t *)(buf + 0x20));
+        y8 = vld1q_u64((const uint64_t *)(buf + 0x30));
+
+        x1 = (uint64x2_t) pmull_hi(x1, x0);
+        x2 = (uint64x2_t) pmull_hi(x2, x0);
+        x3 = (uint64x2_t) pmull_hi(x3, x0);
+        x4 = (uint64x2_t) pmull_hi(x4, x0);
+
+        x1 = veorq_u64(x1, x5);
+        x2 = veorq_u64(x2, x6);
+        x3 = veorq_u64(x3, x7);
+        x4 = veorq_u64(x4, x8);
+
+        x1 = veorq_u64(x1, y5);
+        x2 = veorq_u64(x2, y6);
+        x3 = veorq_u64(x3, y7);
+        x4 = veorq_u64(x4, y8);
+
+        buf += 64;
+        len -= 64;
+    }
+
+    /*
+     * Fold into 128-bits.
+     */
+    x0 = vld1q_u64(k3k4);
+
+    x5 = (uint64x2_t) pmull_lo(x1, x0);
+    x1 = (uint64x2_t) pmull_hi(x1, x0);
+    x1 = veorq_u64(x1, x2);
+    x1 = veorq_u64(x1, x5);
+
+    x5 = (uint64x2_t) pmull_lo(x1, x0);
+    x1 = (uint64x2_t) pmull_hi(x1, x0);
+    x1 = veorq_u64(x1, x3);
+    x1 = veorq_u64(x1, x5);
+
+    x5 = (uint64x2_t) pmull_lo(x1, x0);
+    x1 = (uint64x2_t) pmull_hi(x1, x0);
+    x1 = veorq_u64(x1, x4);
+    x1 = veorq_u64(x1, x5);
+
+    /*
+     * Single fold blocks of 16, if any.
+     */
+    while (len >= 16)
+    {
+        x2 = vld1q_u64((const uint64_t *)buf);
+
+        x5 = (uint64x2_t) pmull_lo(x1, x0);
+        x1 = (uint64x2_t) pmull_hi(x1, x0);
+        x1 = veorq_u64(x1, x2);
+        x1 = veorq_u64(x1, x5);
+
+        buf += 16;
+        len -= 16;
+    }
+
+    /*
+     * Fold 128-bits to 64-bits.
+     */
+    static uint32_t zalign(16) mask[] = { ~0u, 0u, ~0u, 0u };
+
+    x2 = (uint64x2_t) pmull_01(x1, x0);
+    x1 = (uint64x2_t) vextq_u8(vreinterpretq_u8_u64(x1), vdupq_n_u8(0), 8);
+    x3 = (uint64x2_t) vld1q_u32(mask);
+    x1 = veorq_u64(x1, x2);
+
+    x0 = vld1q_u64(k5k0);
+
+    x2 = (uint64x2_t) pmull_01(x2, x0);
+    x2 = (uint64x2_t) vextq_u8(vreinterpretq_u8_u64(x1), vdupq_n_u8(0), 4);
+    x1 = vandq_u64(x1, x3);
+    x1 = (uint64x2_t) pmull_lo(x1, x0);
+    x1 = veorq_u64(x1, x2);
+
+    /*
+     * Barret reduce to 32-bits.
+     */
+    x0 = vld1q_u64(poly);
+
+    x2 = vandq_u64(x1, x3);
+    x2 = (uint64x2_t) pmull_01(x2, x0);
+    x2 = vandq_u64(x2, x3);
+    x2 = (uint64x2_t) pmull_lo(x2, x0);
+    x1 = veorq_u64(x1, x2);
+
+    /*
+     * Return the crc32.
+     */
+    return vgetq_lane_u32(vreinterpretq_u32_u64(x1), 1);
+}
+#endif /* aarch64 specific code. */
+
+#endif

deps/v8/third_party/zlib/crc32_simd.h

@@ -0,0 +1,57 @@
+/* crc32_simd.h
+ *
+ * Copyright 2017 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#include <stdint.h>
+
+#include "zconf.h"
+#include "zutil.h"
+#include "deflate.h"
+
+/*
+ * crc32_sse42_simd_(): compute the crc32 of the buffer, where the buffer
+ * length must be at least 64, and a multiple of 16.
+ */
+uint32_t ZLIB_INTERNAL crc32_sse42_simd_(const unsigned char* buf,
+                                         z_size_t len,
+                                         uint32_t crc);
+
+uint32_t ZLIB_INTERNAL crc32_avx512_simd_(const unsigned char* buf,
+                                          z_size_t len,
+                                          uint32_t crc);
+
+/*
+ * crc32_sse42_simd_ buffer size constraints: see the use in zlib/crc32.c
+ * for computing the crc32 of an arbitrary length buffer.
+ */
+#define Z_CRC32_SSE42_MINIMUM_LENGTH 64
+#define Z_CRC32_SSE42_CHUNKSIZE_MASK 15
+#define Z_CRC32_AVX512_MINIMUM_LENGTH 256
+#define Z_CRC32_AVX512_CHUNKSIZE_MASK 63
+
+/*
+ * CRC32 checksums using ARMv8-a crypto instructions.
+ */
+uint32_t ZLIB_INTERNAL armv8_crc32_little(const unsigned char* buf,
+                                          z_size_t len,
+                                          uint32_t crc);
+
+/* aarch64 specific code. */
+#if defined(__aarch64__)
+
+/* 128 is the sweet spot at the time of coding (late 2020). */
+#define Z_CRC32_PMULL_MINIMUM_LENGTH 128
+#define Z_CRC32_PMULL_CHUNKSIZE_MASK 15
+
+/*
+ * CRC32 checksums using ARMv8-a PMULL instructions, where the buffer
+ * length must be at least 64, and a multiple of 16.
+ */
+uint32_t ZLIB_INTERNAL armv8_crc32_pmull_little(const unsigned char* buf,
+                                                z_size_t len,
+                                                uint32_t crc);
+
+#endif

deps/v8/third_party/zlib/crc_folding.c

@@ -0,0 +1,499 @@
+/*
+ * Compute the CRC32 using a parallelized folding approach with the PCLMULQDQ
+ * instruction.
+ *
+ * A white paper describing this algorithm can be found at:
+ * http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/fast-crc-computation-generic-polynomials-pclmulqdq-paper.pdf
+ *
+ * Copyright (C) 2013 Intel Corporation. All rights reserved.
+ * Authors:
+ * 	Wajdi Feghali   <wajdi.k.feghali@intel.com>
+ * 	Jim Guilford    <james.guilford@intel.com>
+ * 	Vinodh Gopal    <vinodh.gopal@intel.com>
+ * 	Erdinc Ozturk   <erdinc.ozturk@intel.com>
+ * 	Jim Kukunas     <james.t.kukunas@linux.intel.com>
+ *
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "deflate.h"
+
+#ifdef CRC32_SIMD_SSE42_PCLMUL
+
+#include <inttypes.h>
+#include <emmintrin.h>
+#include <immintrin.h>
+#include <wmmintrin.h>
+
+#define CRC_LOAD(s) \
+    do { \
+        __m128i xmm_crc0 = _mm_loadu_si128((__m128i *)s->crc0 + 0);\
+        __m128i xmm_crc1 = _mm_loadu_si128((__m128i *)s->crc0 + 1);\
+        __m128i xmm_crc2 = _mm_loadu_si128((__m128i *)s->crc0 + 2);\
+        __m128i xmm_crc3 = _mm_loadu_si128((__m128i *)s->crc0 + 3);\
+        __m128i xmm_crc_part = _mm_loadu_si128((__m128i *)s->crc0 + 4);
+
+#define CRC_SAVE(s) \
+        _mm_storeu_si128((__m128i *)s->crc0 + 0, xmm_crc0);\
+        _mm_storeu_si128((__m128i *)s->crc0 + 1, xmm_crc1);\
+        _mm_storeu_si128((__m128i *)s->crc0 + 2, xmm_crc2);\
+        _mm_storeu_si128((__m128i *)s->crc0 + 3, xmm_crc3);\
+        _mm_storeu_si128((__m128i *)s->crc0 + 4, xmm_crc_part);\
+    } while (0);
+
+ZLIB_INTERNAL void crc_fold_init(deflate_state *const s)
+{
+    CRC_LOAD(s)
+
+    xmm_crc0 = _mm_cvtsi32_si128(0x9db42487);
+    xmm_crc1 = _mm_setzero_si128();
+    xmm_crc2 = _mm_setzero_si128();
+    xmm_crc3 = _mm_setzero_si128();
+
+    CRC_SAVE(s)
+
+    s->strm->adler = 0;
+}
+
+local void fold_1(deflate_state *const s,
+        __m128i *xmm_crc0, __m128i *xmm_crc1,
+        __m128i *xmm_crc2, __m128i *xmm_crc3)
+{
+    const __m128i xmm_fold4 = _mm_set_epi32(
+            0x00000001, 0x54442bd4,
+            0x00000001, 0xc6e41596);
+
+    __m128i x_tmp3;
+    __m128 ps_crc0, ps_crc3, ps_res;
+
+    x_tmp3 = *xmm_crc3;
+
+    *xmm_crc3 = *xmm_crc0;
+    *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01);
+    *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x10);
+    ps_crc0 = _mm_castsi128_ps(*xmm_crc0);
+    ps_crc3 = _mm_castsi128_ps(*xmm_crc3);
+    ps_res = _mm_xor_ps(ps_crc0, ps_crc3);
+
+    *xmm_crc0 = *xmm_crc1;
+    *xmm_crc1 = *xmm_crc2;
+    *xmm_crc2 = x_tmp3;
+    *xmm_crc3 = _mm_castps_si128(ps_res);
+}
+
+local void fold_2(deflate_state *const s,
+        __m128i *xmm_crc0, __m128i *xmm_crc1,
+        __m128i *xmm_crc2, __m128i *xmm_crc3)
+{
+    const __m128i xmm_fold4 = _mm_set_epi32(
+            0x00000001, 0x54442bd4,
+            0x00000001, 0xc6e41596);
+
+    __m128i x_tmp3, x_tmp2;
+    __m128 ps_crc0, ps_crc1, ps_crc2, ps_crc3, ps_res31, ps_res20;
+
+    x_tmp3 = *xmm_crc3;
+    x_tmp2 = *xmm_crc2;
+
+    *xmm_crc3 = *xmm_crc1;
+    *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x01);
+    *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x10);
+    ps_crc3 = _mm_castsi128_ps(*xmm_crc3);
+    ps_crc1 = _mm_castsi128_ps(*xmm_crc1);
+    ps_res31= _mm_xor_ps(ps_crc3, ps_crc1);
+
+    *xmm_crc2 = *xmm_crc0;
+    *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01);
+    *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x10);
+    ps_crc0 = _mm_castsi128_ps(*xmm_crc0);
+    ps_crc2 = _mm_castsi128_ps(*xmm_crc2);
+    ps_res20= _mm_xor_ps(ps_crc0, ps_crc2);
+
+    *xmm_crc0 = x_tmp2;
+    *xmm_crc1 = x_tmp3;
+    *xmm_crc2 = _mm_castps_si128(ps_res20);
+    *xmm_crc3 = _mm_castps_si128(ps_res31);
+}
+
+local void fold_3(deflate_state *const s,
+        __m128i *xmm_crc0, __m128i *xmm_crc1,
+        __m128i *xmm_crc2, __m128i *xmm_crc3)
+{
+    const __m128i xmm_fold4 = _mm_set_epi32(
+            0x00000001, 0x54442bd4,
+            0x00000001, 0xc6e41596);
+
+    __m128i x_tmp3;
+    __m128 ps_crc0, ps_crc1, ps_crc2, ps_crc3, ps_res32, ps_res21, ps_res10;
+
+    x_tmp3 = *xmm_crc3;
+
+    *xmm_crc3 = *xmm_crc2;
+    *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x01);
+    *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x10);
+    ps_crc2 = _mm_castsi128_ps(*xmm_crc2);
+    ps_crc3 = _mm_castsi128_ps(*xmm_crc3);
+    ps_res32 = _mm_xor_ps(ps_crc2, ps_crc3);
+
+    *xmm_crc2 = *xmm_crc1;
+    *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x01);
+    *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x10);
+    ps_crc1 = _mm_castsi128_ps(*xmm_crc1);
+    ps_crc2 = _mm_castsi128_ps(*xmm_crc2);
+    ps_res21= _mm_xor_ps(ps_crc1, ps_crc2);
+
+    *xmm_crc1 = *xmm_crc0;
+    *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01);
+    *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x10);
+    ps_crc0 = _mm_castsi128_ps(*xmm_crc0);
+    ps_crc1 = _mm_castsi128_ps(*xmm_crc1);
+    ps_res10= _mm_xor_ps(ps_crc0, ps_crc1);
+
+    *xmm_crc0 = x_tmp3;
+    *xmm_crc1 = _mm_castps_si128(ps_res10);
+    *xmm_crc2 = _mm_castps_si128(ps_res21);
+    *xmm_crc3 = _mm_castps_si128(ps_res32);
+}
+
+local void fold_4(deflate_state *const s,
+        __m128i *xmm_crc0, __m128i *xmm_crc1,
+        __m128i *xmm_crc2, __m128i *xmm_crc3)
+{
+    const __m128i xmm_fold4 = _mm_set_epi32(
+            0x00000001, 0x54442bd4,
+            0x00000001, 0xc6e41596);
+
+    __m128i x_tmp0, x_tmp1, x_tmp2, x_tmp3;
+    __m128 ps_crc0, ps_crc1, ps_crc2, ps_crc3;
+    __m128 ps_t0, ps_t1, ps_t2, ps_t3;
+    __m128 ps_res0, ps_res1, ps_res2, ps_res3;
+
+    x_tmp0 = *xmm_crc0;
+    x_tmp1 = *xmm_crc1;
+    x_tmp2 = *xmm_crc2;
+    x_tmp3 = *xmm_crc3;
+
+    *xmm_crc0 = _mm_clmulepi64_si128(*xmm_crc0, xmm_fold4, 0x01);
+    x_tmp0 = _mm_clmulepi64_si128(x_tmp0, xmm_fold4, 0x10);
+    ps_crc0 = _mm_castsi128_ps(*xmm_crc0);
+    ps_t0 = _mm_castsi128_ps(x_tmp0);
+    ps_res0 = _mm_xor_ps(ps_crc0, ps_t0);
+
+    *xmm_crc1 = _mm_clmulepi64_si128(*xmm_crc1, xmm_fold4, 0x01);
+    x_tmp1 = _mm_clmulepi64_si128(x_tmp1, xmm_fold4, 0x10);
+    ps_crc1 = _mm_castsi128_ps(*xmm_crc1);
+    ps_t1 = _mm_castsi128_ps(x_tmp1);
+    ps_res1 = _mm_xor_ps(ps_crc1, ps_t1);
+
+    *xmm_crc2 = _mm_clmulepi64_si128(*xmm_crc2, xmm_fold4, 0x01);
+    x_tmp2 = _mm_clmulepi64_si128(x_tmp2, xmm_fold4, 0x10);
+    ps_crc2 = _mm_castsi128_ps(*xmm_crc2);
+    ps_t2 = _mm_castsi128_ps(x_tmp2);
+    ps_res2 = _mm_xor_ps(ps_crc2, ps_t2);
+
+    *xmm_crc3 = _mm_clmulepi64_si128(*xmm_crc3, xmm_fold4, 0x01);
+    x_tmp3 = _mm_clmulepi64_si128(x_tmp3, xmm_fold4, 0x10);
+    ps_crc3 = _mm_castsi128_ps(*xmm_crc3);
+    ps_t3 = _mm_castsi128_ps(x_tmp3);
+    ps_res3 = _mm_xor_ps(ps_crc3, ps_t3);
+
+    *xmm_crc0 = _mm_castps_si128(ps_res0);
+    *xmm_crc1 = _mm_castps_si128(ps_res1);
+    *xmm_crc2 = _mm_castps_si128(ps_res2);
+    *xmm_crc3 = _mm_castps_si128(ps_res3);
+}
+
+local const unsigned zalign(32) pshufb_shf_table[60] = {
+	0x84838281,0x88878685,0x8c8b8a89,0x008f8e8d, /* shl 15 (16 - 1)/shr1 */
+	0x85848382,0x89888786,0x8d8c8b8a,0x01008f8e, /* shl 14 (16 - 3)/shr2 */
+	0x86858483,0x8a898887,0x8e8d8c8b,0x0201008f, /* shl 13 (16 - 4)/shr3 */
+	0x87868584,0x8b8a8988,0x8f8e8d8c,0x03020100, /* shl 12 (16 - 4)/shr4 */
+	0x88878685,0x8c8b8a89,0x008f8e8d,0x04030201, /* shl 11 (16 - 5)/shr5 */
+	0x89888786,0x8d8c8b8a,0x01008f8e,0x05040302, /* shl 10 (16 - 6)/shr6 */
+	0x8a898887,0x8e8d8c8b,0x0201008f,0x06050403, /* shl  9 (16 - 7)/shr7 */
+	0x8b8a8988,0x8f8e8d8c,0x03020100,0x07060504, /* shl  8 (16 - 8)/shr8 */
+	0x8c8b8a89,0x008f8e8d,0x04030201,0x08070605, /* shl  7 (16 - 9)/shr9 */
+	0x8d8c8b8a,0x01008f8e,0x05040302,0x09080706, /* shl  6 (16 -10)/shr10*/
+	0x8e8d8c8b,0x0201008f,0x06050403,0x0a090807, /* shl  5 (16 -11)/shr11*/
+	0x8f8e8d8c,0x03020100,0x07060504,0x0b0a0908, /* shl  4 (16 -12)/shr12*/
+	0x008f8e8d,0x04030201,0x08070605,0x0c0b0a09, /* shl  3 (16 -13)/shr13*/
+	0x01008f8e,0x05040302,0x09080706,0x0d0c0b0a, /* shl  2 (16 -14)/shr14*/
+	0x0201008f,0x06050403,0x0a090807,0x0e0d0c0b  /* shl  1 (16 -15)/shr15*/
+};
+
+local void partial_fold(deflate_state *const s, const size_t len,
+        __m128i *xmm_crc0, __m128i *xmm_crc1,
+        __m128i *xmm_crc2, __m128i *xmm_crc3,
+        __m128i *xmm_crc_part)
+{
+
+    const __m128i xmm_fold4 = _mm_set_epi32(
+            0x00000001, 0x54442bd4,
+            0x00000001, 0xc6e41596);
+    const __m128i xmm_mask3 = _mm_set1_epi32(0x80808080);
+
+    __m128i xmm_shl, xmm_shr, xmm_tmp1, xmm_tmp2, xmm_tmp3;
+    __m128i xmm_a0_0, xmm_a0_1;
+    __m128 ps_crc3, psa0_0, psa0_1, ps_res;
+
+    xmm_shl = _mm_load_si128((__m128i *)pshufb_shf_table + (len - 1));
+    xmm_shr = xmm_shl;
+    xmm_shr = _mm_xor_si128(xmm_shr, xmm_mask3);
+
+    xmm_a0_0 = _mm_shuffle_epi8(*xmm_crc0, xmm_shl);
+
+    *xmm_crc0 = _mm_shuffle_epi8(*xmm_crc0, xmm_shr);
+    xmm_tmp1 = _mm_shuffle_epi8(*xmm_crc1, xmm_shl);
+    *xmm_crc0 = _mm_or_si128(*xmm_crc0, xmm_tmp1);
+
+    *xmm_crc1 = _mm_shuffle_epi8(*xmm_crc1, xmm_shr);
+    xmm_tmp2 = _mm_shuffle_epi8(*xmm_crc2, xmm_shl);
+    *xmm_crc1 = _mm_or_si128(*xmm_crc1, xmm_tmp2);
+
+    *xmm_crc2 = _mm_shuffle_epi8(*xmm_crc2, xmm_shr);
+    xmm_tmp3 = _mm_shuffle_epi8(*xmm_crc3, xmm_shl);
+    *xmm_crc2 = _mm_or_si128(*xmm_crc2, xmm_tmp3);
+
+    *xmm_crc3 = _mm_shuffle_epi8(*xmm_crc3, xmm_shr);
+    *xmm_crc_part = _mm_shuffle_epi8(*xmm_crc_part, xmm_shl);
+    *xmm_crc3 = _mm_or_si128(*xmm_crc3, *xmm_crc_part);
+
+    xmm_a0_1 = _mm_clmulepi64_si128(xmm_a0_0, xmm_fold4, 0x10);
+    xmm_a0_0 = _mm_clmulepi64_si128(xmm_a0_0, xmm_fold4, 0x01);
+
+    ps_crc3 = _mm_castsi128_ps(*xmm_crc3);
+    psa0_0 = _mm_castsi128_ps(xmm_a0_0);
+    psa0_1 = _mm_castsi128_ps(xmm_a0_1);
+
+    ps_res = _mm_xor_ps(ps_crc3, psa0_0);
+    ps_res = _mm_xor_ps(ps_res, psa0_1);
+
+    *xmm_crc3 = _mm_castps_si128(ps_res);
+}
+
+ZLIB_INTERNAL void crc_fold_copy(deflate_state *const s,
+        unsigned char *dst, const unsigned char *src, long len)
+{
+    unsigned long algn_diff;
+    __m128i xmm_t0, xmm_t1, xmm_t2, xmm_t3;
+
+    CRC_LOAD(s)
+
+    if (len < 16) {
+        if (len == 0)
+            return;
+        goto partial;
+    }
+
+    algn_diff = (0 - (uintptr_t)src) & 0xF;
+    if (algn_diff) {
+        xmm_crc_part = _mm_loadu_si128((__m128i *)src);
+        _mm_storeu_si128((__m128i *)dst, xmm_crc_part);
+
+        dst += algn_diff;
+        src += algn_diff;
+        len -= algn_diff;
+
+        partial_fold(s, algn_diff, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3,
+            &xmm_crc_part);
+    }
+
+    while ((len -= 64) >= 0) {
+        xmm_t0 = _mm_load_si128((__m128i *)src);
+        xmm_t1 = _mm_load_si128((__m128i *)src + 1);
+        xmm_t2 = _mm_load_si128((__m128i *)src + 2);
+        xmm_t3 = _mm_load_si128((__m128i *)src + 3);
+
+        fold_4(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3);
+
+        _mm_storeu_si128((__m128i *)dst, xmm_t0);
+        _mm_storeu_si128((__m128i *)dst + 1, xmm_t1);
+        _mm_storeu_si128((__m128i *)dst + 2, xmm_t2);
+        _mm_storeu_si128((__m128i *)dst + 3, xmm_t3);
+
+        xmm_crc0 = _mm_xor_si128(xmm_crc0, xmm_t0);
+        xmm_crc1 = _mm_xor_si128(xmm_crc1, xmm_t1);
+        xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_t2);
+        xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t3);
+
+        src += 64;
+        dst += 64;
+    }
+
+    /*
+     * len = num bytes left - 64
+     */
+    if (len + 16 >= 0) {
+        len += 16;
+
+        xmm_t0 = _mm_load_si128((__m128i *)src);
+        xmm_t1 = _mm_load_si128((__m128i *)src + 1);
+        xmm_t2 = _mm_load_si128((__m128i *)src + 2);
+
+        fold_3(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3);
+
+        _mm_storeu_si128((__m128i *)dst, xmm_t0);
+        _mm_storeu_si128((__m128i *)dst + 1, xmm_t1);
+        _mm_storeu_si128((__m128i *)dst + 2, xmm_t2);
+
+        xmm_crc1 = _mm_xor_si128(xmm_crc1, xmm_t0);
+        xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_t1);
+        xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t2);
+
+        if (len == 0)
+            goto done;
+
+        dst += 48;
+        src += 48;
+    } else if (len + 32 >= 0) {
+        len += 32;
+
+        xmm_t0 = _mm_load_si128((__m128i *)src);
+        xmm_t1 = _mm_load_si128((__m128i *)src + 1);
+
+        fold_2(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3);
+
+        _mm_storeu_si128((__m128i *)dst, xmm_t0);
+        _mm_storeu_si128((__m128i *)dst + 1, xmm_t1);
+
+        xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_t0);
+        xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t1);
+
+        if (len == 0)
+            goto done;
+
+        dst += 32;
+        src += 32;
+    } else if (len + 48 >= 0) {
+        len += 48;
+
+        xmm_t0 = _mm_load_si128((__m128i *)src);
+
+        fold_1(s, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3);
+
+        _mm_storeu_si128((__m128i *)dst, xmm_t0);
+
+        xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_t0);
+
+        if (len == 0)
+            goto done;
+
+        dst += 16;
+        src += 16;
+    } else {
+        len += 64;
+        if (len == 0)
+            goto done;
+    }
+
+partial:
+
+#if defined(_MSC_VER)
+    /* VS does not permit the use of _mm_set_epi64x in 32-bit builds */
+    {
+        int32_t parts[4] = {0, 0, 0, 0};
+        memcpy(&parts, src, len);
+        xmm_crc_part = _mm_set_epi32(parts[3], parts[2], parts[1], parts[0]);
+    }
+#else
+    {
+        int64_t parts[2] = {0, 0};
+        memcpy(&parts, src, len);
+        xmm_crc_part = _mm_set_epi64x(parts[1], parts[0]);
+    }
+#endif
+
+    zmemcpy(dst, src, len);  /* TODO: Possibly generate more efficient code. */
+    partial_fold(s, len, &xmm_crc0, &xmm_crc1, &xmm_crc2, &xmm_crc3,
+        &xmm_crc_part);
+done:
+    CRC_SAVE(s)
+}
+
+local const unsigned zalign(16) crc_k[] = {
+    0xccaa009e, 0x00000000, /* rk1 */
+    0x751997d0, 0x00000001, /* rk2 */
+    0xccaa009e, 0x00000000, /* rk5 */
+    0x63cd6124, 0x00000001, /* rk6 */
+    0xf7011640, 0x00000001, /* rk7 */
+    0xdb710640, 0x00000001  /* rk8 */
+};
+
+local const unsigned zalign(16) crc_mask[4] = {
+    0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000
+};
+
+local const unsigned zalign(16) crc_mask2[4] = {
+    0x00000000, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF
+};
+
+unsigned ZLIB_INTERNAL crc_fold_512to32(deflate_state *const s)
+{
+    const __m128i xmm_mask  = _mm_load_si128((__m128i *)crc_mask);
+    const __m128i xmm_mask2 = _mm_load_si128((__m128i *)crc_mask2);
+
+    unsigned crc;
+    __m128i x_tmp0, x_tmp1, x_tmp2, crc_fold;
+
+    __m128i xmm_crc0 = _mm_loadu_si128((__m128i *)s->crc0 + 0);
+    __m128i xmm_crc1 = _mm_loadu_si128((__m128i *)s->crc0 + 1);
+    __m128i xmm_crc2 = _mm_loadu_si128((__m128i *)s->crc0 + 2);
+    __m128i xmm_crc3 = _mm_loadu_si128((__m128i *)s->crc0 + 3);
+
+    /*
+     * k1
+     */
+    crc_fold = _mm_load_si128((__m128i *)crc_k);
+
+    x_tmp0 = _mm_clmulepi64_si128(xmm_crc0, crc_fold, 0x10);
+    xmm_crc0 = _mm_clmulepi64_si128(xmm_crc0, crc_fold, 0x01);
+    xmm_crc1 = _mm_xor_si128(xmm_crc1, x_tmp0);
+    xmm_crc1 = _mm_xor_si128(xmm_crc1, xmm_crc0);
+
+    x_tmp1 = _mm_clmulepi64_si128(xmm_crc1, crc_fold, 0x10);
+    xmm_crc1 = _mm_clmulepi64_si128(xmm_crc1, crc_fold, 0x01);
+    xmm_crc2 = _mm_xor_si128(xmm_crc2, x_tmp1);
+    xmm_crc2 = _mm_xor_si128(xmm_crc2, xmm_crc1);
+
+    x_tmp2 = _mm_clmulepi64_si128(xmm_crc2, crc_fold, 0x10);
+    xmm_crc2 = _mm_clmulepi64_si128(xmm_crc2, crc_fold, 0x01);
+    xmm_crc3 = _mm_xor_si128(xmm_crc3, x_tmp2);
+    xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc2);
+
+    /*
+     * k5
+     */
+    crc_fold = _mm_load_si128((__m128i *)crc_k + 1);
+
+    xmm_crc0 = xmm_crc3;
+    xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0);
+    xmm_crc0 = _mm_srli_si128(xmm_crc0, 8);
+    xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc0);
+
+    xmm_crc0 = xmm_crc3;
+    xmm_crc3 = _mm_slli_si128(xmm_crc3, 4);
+    xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0x10);
+    xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc0);
+    xmm_crc3 = _mm_and_si128(xmm_crc3, xmm_mask2);
+
+    /*
+     * k7
+     */
+    xmm_crc1 = xmm_crc3;
+    xmm_crc2 = xmm_crc3;
+    crc_fold = _mm_load_si128((__m128i *)crc_k + 2);
+
+    xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0);
+    xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc2);
+    xmm_crc3 = _mm_and_si128(xmm_crc3, xmm_mask);
+
+    xmm_crc2 = xmm_crc3;
+    xmm_crc3 = _mm_clmulepi64_si128(xmm_crc3, crc_fold, 0x10);
+    xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc2);
+    xmm_crc3 = _mm_xor_si128(xmm_crc3, xmm_crc1);
+
+    crc = _mm_extract_epi32(xmm_crc3, 2);
+    return ~crc;
+}
+
+#endif  /* CRC32_SIMD_SSE42_PCLMUL */

deps/v8/third_party/zlib/deflate.h

@@ -0,0 +1,395 @@
+/* deflate.h -- internal compression state
+ * Copyright (C) 1995-2018 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id$ */
+
+#ifndef DEFLATE_H
+#define DEFLATE_H
+
+#include "zutil.h"
+
+/* define NO_GZIP when compiling if you want to disable gzip header and
+   trailer creation by deflate().  NO_GZIP would be used to avoid linking in
+   the crc code when it is not needed.  For shared libraries, gzip encoding
+   should be left enabled. */
+#ifndef NO_GZIP
+#  define GZIP
+#endif
+
+/* define LIT_MEM to slightly increase the speed of deflate (order 1% to 2%) at
+   the cost of a larger memory footprint */
+#define LIT_MEM
+
+/* ===========================================================================
+ * Internal compression state.
+ */
+
+#define LENGTH_CODES 29
+/* number of length codes, not counting the special END_BLOCK code */
+
+#define LITERALS  256
+/* number of literal bytes 0..255 */
+
+#define L_CODES (LITERALS+1+LENGTH_CODES)
+/* number of Literal or Length codes, including the END_BLOCK code */
+
+#define D_CODES   30
+/* number of distance codes */
+
+#define BL_CODES  19
+/* number of codes used to transfer the bit lengths */
+
+#define HEAP_SIZE (2*L_CODES+1)
+/* maximum heap size */
+
+#define MAX_BITS 15
+/* All codes must not exceed MAX_BITS bits */
+
+#define Buf_size 16
+/* size of bit buffer in bi_buf */
+
+#define INIT_STATE    42    /* zlib header -> BUSY_STATE */
+#ifdef GZIP
+#  define GZIP_STATE  57    /* gzip header -> BUSY_STATE | EXTRA_STATE */
+#endif
+#define EXTRA_STATE   69    /* gzip extra block -> NAME_STATE */
+#define NAME_STATE    73    /* gzip file name -> COMMENT_STATE */
+#define COMMENT_STATE 91    /* gzip comment -> HCRC_STATE */
+#define HCRC_STATE   103    /* gzip header CRC -> BUSY_STATE */
+#define BUSY_STATE   113    /* deflate -> FINISH_STATE */
+#define FINISH_STATE 666    /* stream complete */
+/* Stream status */
+
+
+/* Data structure describing a single value and its code string. */
+typedef struct ct_data_s {
+    union {
+        ush  freq;       /* frequency count */
+        ush  code;       /* bit string */
+    } fc;
+    union {
+        ush  dad;        /* father node in Huffman tree */
+        ush  len;        /* length of bit string */
+    } dl;
+} FAR ct_data;
+
+#define Freq fc.freq
+#define Code fc.code
+#define Dad  dl.dad
+#define Len  dl.len
+
+typedef struct static_tree_desc_s  static_tree_desc;
+
+typedef struct tree_desc_s {
+    ct_data *dyn_tree;           /* the dynamic tree */
+    int     max_code;            /* largest code with non zero frequency */
+    const static_tree_desc *stat_desc;  /* the corresponding static tree */
+} FAR tree_desc;
+
+typedef ush Pos;
+typedef Pos FAR Posf;
+typedef unsigned IPos;
+
+/* A Pos is an index in the character window. We use short instead of int to
+ * save space in the various tables. IPos is used only for parameter passing.
+ */
+
+typedef struct internal_state {
+    z_streamp strm;      /* pointer back to this zlib stream */
+    int   status;        /* as the name implies */
+    Bytef *pending_buf;  /* output still pending */
+    ulg   pending_buf_size; /* size of pending_buf */
+    Bytef *pending_out;  /* next pending byte to output to the stream */
+    ulg   pending;       /* nb of bytes in the pending buffer */
+    int   wrap;          /* bit 0 true for zlib, bit 1 true for gzip */
+    gz_headerp  gzhead;  /* gzip header information to write */
+    ulg   gzindex;       /* where in extra, name, or comment */
+    Byte  method;        /* can only be DEFLATED */
+    int   last_flush;    /* value of flush param for previous deflate call */
+    unsigned crc0[4 * 5];
+    /* used by deflate.c: */
+
+    uInt  w_size;        /* LZ77 window size (32K by default) */
+    uInt  w_bits;        /* log2(w_size)  (8..16) */
+    uInt  w_mask;        /* w_size - 1 */
+
+    Bytef *window;
+    /* Sliding window. Input bytes are read into the second half of the window,
+     * and move to the first half later to keep a dictionary of at least wSize
+     * bytes. With this organization, matches are limited to a distance of
+     * wSize-MAX_MATCH bytes, but this ensures that IO is always
+     * performed with a length multiple of the block size. Also, it limits
+     * the window size to 64K, which is quite useful on MSDOS.
+     * To do: use the user input buffer as sliding window.
+     */
+
+    ulg window_size;
+    /* Actual size of window: 2*wSize, except when the user input buffer
+     * is directly used as sliding window.
+     */
+
+    Posf *prev;
+    /* Link to older string with same hash index. To limit the size of this
+     * array to 64K, this link is maintained only for the last 32K strings.
+     * An index in this array is thus a window index modulo 32K.
+     */
+
+    Posf *head; /* Heads of the hash chains or NIL. */
+
+    uInt  ins_h;          /* hash index of string to be inserted */
+    uInt  hash_size;      /* number of elements in hash table */
+    uInt  hash_bits;      /* log2(hash_size) */
+    uInt  hash_mask;      /* hash_size-1 */
+
+    uInt  hash_shift;
+    /* Number of bits by which ins_h must be shifted at each input
+     * step. It must be such that after MIN_MATCH steps, the oldest
+     * byte no longer takes part in the hash key, that is:
+     *   hash_shift * MIN_MATCH >= hash_bits
+     */
+
+    long block_start;
+    /* Window position at the beginning of the current output block. Gets
+     * negative when the window is moved backwards.
+     */
+
+    uInt match_length;           /* length of best match */
+    IPos prev_match;             /* previous match */
+    int match_available;         /* set if previous match exists */
+    uInt strstart;               /* start of string to insert */
+    uInt match_start;            /* start of matching string */
+    uInt lookahead;              /* number of valid bytes ahead in window */
+
+    uInt prev_length;
+    /* Length of the best match at previous step. Matches not greater than this
+     * are discarded. This is used in the lazy match evaluation.
+     */
+
+    uInt max_chain_length;
+    /* To speed up deflation, hash chains are never searched beyond this
+     * length.  A higher limit improves compression ratio but degrades the
+     * speed.
+     */
+
+    uInt max_lazy_match;
+    /* Attempt to find a better match only when the current match is strictly
+     * smaller than this value. This mechanism is used only for compression
+     * levels >= 4.
+     */
+#   define max_insert_length  max_lazy_match
+    /* Insert new strings in the hash table only if the match length is not
+     * greater than this length. This saves time but degrades compression.
+     * max_insert_length is used only for compression levels <= 3.
+     */
+
+    int level;    /* compression level (1..9) */
+    int strategy; /* favor or force Huffman coding*/
+
+    uInt good_match;
+    /* Use a faster search when the previous match is longer than this */
+
+    int nice_match; /* Stop searching when current match exceeds this */
+
+                /* used by trees.c: */
+    /* Didn't use ct_data typedef below to suppress compiler warning */
+    struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
+    struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
+    struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
+
+    struct tree_desc_s l_desc;               /* desc. for literal tree */
+    struct tree_desc_s d_desc;               /* desc. for distance tree */
+    struct tree_desc_s bl_desc;              /* desc. for bit length tree */
+
+    ush bl_count[MAX_BITS+1];
+    /* number of codes at each bit length for an optimal tree */
+
+    int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
+    int heap_len;               /* number of elements in the heap */
+    int heap_max;               /* element of largest frequency */
+    /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+     * The same heap array is used to build all trees.
+     */
+
+    uch depth[2*L_CODES+1];
+    /* Depth of each subtree used as tie breaker for trees of equal frequency
+     */
+
+#ifdef LIT_MEM
+    ushf *d_buf;          /* buffer for distances */
+    uchf *l_buf;          /* buffer for literals/lengths */
+#else
+    uchf *sym_buf;        /* buffer for distances and literals/lengths */
+#endif
+
+    uInt  lit_bufsize;
+    /* Size of match buffer for literals/lengths.  There are 4 reasons for
+     * limiting lit_bufsize to 64K:
+     *   - frequencies can be kept in 16 bit counters
+     *   - if compression is not successful for the first block, all input
+     *     data is still in the window so we can still emit a stored block even
+     *     when input comes from standard input.  (This can also be done for
+     *     all blocks if lit_bufsize is not greater than 32K.)
+     *   - if compression is not successful for a file smaller than 64K, we can
+     *     even emit a stored file instead of a stored block (saving 5 bytes).
+     *     This is applicable only for zip (not gzip or zlib).
+     *   - creating new Huffman trees less frequently may not provide fast
+     *     adaptation to changes in the input data statistics. (Take for
+     *     example a binary file with poorly compressible code followed by
+     *     a highly compressible string table.) Smaller buffer sizes give
+     *     fast adaptation but have of course the overhead of transmitting
+     *     trees more frequently.
+     *   - I can't count above 4
+     */
+
+    uInt sym_next;      /* running index in symbol buffer */
+    uInt sym_end;       /* symbol table full when sym_next reaches this */
+
+    ulg opt_len;        /* bit length of current block with optimal trees */
+    ulg static_len;     /* bit length of current block with static trees */
+    uInt matches;       /* number of string matches in current block */
+    uInt insert;        /* bytes at end of window left to insert */
+
+#ifdef ZLIB_DEBUG
+    ulg compressed_len; /* total bit length of compressed file mod 2^32 */
+    ulg bits_sent;      /* bit length of compressed data sent mod 2^32 */
+#endif
+
+    ush bi_buf;
+    /* Output buffer. bits are inserted starting at the bottom (least
+     * significant bits).
+     */
+    int bi_valid;
+    /* Number of valid bits in bi_buf.  All bits above the last valid bit
+     * are always zero.
+     */
+
+    ulg high_water;
+    /* High water mark offset in window for initialized bytes -- bytes above
+     * this are set to zero in order to avoid memory check warnings when
+     * longest match routines access bytes past the input.  This is then
+     * updated to the new high water mark.
+     */
+
+    uInt chromium_zlib_hash;
+    /* 0 if Rabin-Karp rolling hash is enabled, non-zero if chromium zlib
+     * hash is enabled.
+     */
+
+#if defined(QAT_COMPRESSION_ENABLED)
+    /* Pointer to a struct that contains the current state of the QAT
+     * stream.
+     */
+    struct qat_deflate *qat_s;
+#endif
+
+} FAR deflate_state;
+
+/* Output a byte on the stream.
+ * IN assertion: there is enough room in pending_buf.
+ */
+#define put_byte(s, c) {s->pending_buf[s->pending++] = (Bytef)(c);}
+
+
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
+#define MAX_DIST(s)  ((s)->w_size-MIN_LOOKAHEAD)
+/* In order to simplify the code, particularly on 16 bit machines, match
+ * distances are limited to MAX_DIST instead of WSIZE.
+ */
+
+#define WIN_INIT MAX_MATCH
+/* Number of bytes after end of data in window to initialize in order to avoid
+   memory checker errors from longest match routines */
+
+        /* in trees.c */
+void ZLIB_INTERNAL _tr_init(deflate_state *s);
+int ZLIB_INTERNAL _tr_tally(deflate_state *s, unsigned dist, unsigned lc);
+void ZLIB_INTERNAL _tr_flush_block(deflate_state *s, charf *buf,
+                                   ulg stored_len, int last);
+void ZLIB_INTERNAL _tr_flush_bits(deflate_state *s);
+void ZLIB_INTERNAL _tr_align(deflate_state *s);
+void ZLIB_INTERNAL _tr_stored_block(deflate_state *s, charf *buf,
+                                    ulg stored_len, int last);
+
+#define d_code(dist) \
+   ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
+/* Mapping from a distance to a distance code. dist is the distance - 1 and
+ * must not have side effects. _dist_code[256] and _dist_code[257] are never
+ * used.
+ */
+
+#ifndef ZLIB_DEBUG
+/* Inline versions of _tr_tally for speed: */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+  extern uch ZLIB_INTERNAL _length_code[];
+  extern uch ZLIB_INTERNAL _dist_code[];
+#else
+  extern const uch ZLIB_INTERNAL _length_code[];
+  extern const uch ZLIB_INTERNAL _dist_code[];
+#endif
+
+#ifdef LIT_MEM
+# define _tr_tally_lit(s, c, flush) \
+  { uch cc = (c); \
+    s->d_buf[s->sym_next] = 0; \
+    s->l_buf[s->sym_next++] = cc; \
+    s->dyn_ltree[cc].Freq++; \
+    flush = (s->sym_next == s->sym_end); \
+   }
+# define _tr_tally_dist(s, distance, length, flush) \
+  { uch len = (uch)(length); \
+    ush dist = (ush)(distance); \
+    s->d_buf[s->sym_next] = dist; \
+    s->l_buf[s->sym_next++] = len; \
+    dist--; \
+    s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
+    s->dyn_dtree[d_code(dist)].Freq++; \
+    flush = (s->sym_next == s->sym_end); \
+  }
+#else
+# define _tr_tally_lit(s, c, flush) \
+  { uch cc = (c); \
+    s->sym_buf[s->sym_next++] = 0; \
+    s->sym_buf[s->sym_next++] = 0; \
+    s->sym_buf[s->sym_next++] = cc; \
+    s->dyn_ltree[cc].Freq++; \
+    flush = (s->sym_next == s->sym_end); \
+   }
+# define _tr_tally_dist(s, distance, length, flush) \
+  { uch len = (uch)(length); \
+    ush dist = (ush)(distance); \
+    s->sym_buf[s->sym_next++] = (uch)dist; \
+    s->sym_buf[s->sym_next++] = (uch)(dist >> 8); \
+    s->sym_buf[s->sym_next++] = len; \
+    dist--; \
+    s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
+    s->dyn_dtree[d_code(dist)].Freq++; \
+    flush = (s->sym_next == s->sym_end); \
+  }
+#endif
+#else
+# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
+# define _tr_tally_dist(s, distance, length, flush) \
+              flush = _tr_tally(s, distance, length)
+#endif
+
+/* Functions that are SIMD optimised on x86 */
+void ZLIB_INTERNAL crc_fold_init(deflate_state* const s);
+void ZLIB_INTERNAL crc_fold_copy(deflate_state* const s,
+                                 unsigned char* dst,
+                                 const unsigned char* src,
+                                 long len);
+unsigned ZLIB_INTERNAL crc_fold_512to32(deflate_state* const s);
+
+#endif /* DEFLATE_H */

deps/v8/third_party/zlib/examples/zpipe.c

@@ -0,0 +1,209 @@
+/* zpipe.c: example of proper use of zlib's inflate() and deflate()
+   Not copyrighted -- provided to the public domain
+   Version 1.4  11 December 2005  Mark Adler */
+
+/* Version history:
+   1.0  30 Oct 2004  First version
+   1.1   8 Nov 2004  Add void casting for unused return values
+                     Use switch statement for inflate() return values
+   1.2   9 Nov 2004  Add assertions to document zlib guarantees
+   1.3   6 Apr 2005  Remove incorrect assertion in inf()
+   1.4  11 Dec 2005  Add hack to avoid MSDOS end-of-line conversions
+                     Avoid some compiler warnings for input and output buffers
+ */
+
+#if defined(_WIN32) && !defined(_CRT_NONSTDC_NO_DEPRECATE)
+#  define _CRT_NONSTDC_NO_DEPRECATE
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <assert.h>
+#include "zlib.h"
+
+#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
+#  include <fcntl.h>
+#  include <io.h>
+#  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)
+#else
+#  define SET_BINARY_MODE(file)
+#endif
+
+#define CHUNK 16384
+
+/* Compress from file source to file dest until EOF on source.
+   def() returns Z_OK on success, Z_MEM_ERROR if memory could not be
+   allocated for processing, Z_STREAM_ERROR if an invalid compression
+   level is supplied, Z_VERSION_ERROR if the version of zlib.h and the
+   version of the library linked do not match, or Z_ERRNO if there is
+   an error reading or writing the files. */
+int def(FILE *source, FILE *dest, int level)
+{
+    int ret, flush;
+    unsigned have;
+    z_stream strm;
+    unsigned char in[CHUNK];
+    unsigned char out[CHUNK];
+
+    /* allocate deflate state */
+    strm.zalloc = Z_NULL;
+    strm.zfree = Z_NULL;
+    strm.opaque = Z_NULL;
+    ret = deflateInit(&strm, level);
+    if (ret != Z_OK)
+        return ret;
+
+    /* compress until end of file */
+    do {
+        strm.avail_in = fread(in, 1, CHUNK, source);
+        if (ferror(source)) {
+            (void)deflateEnd(&strm);
+            return Z_ERRNO;
+        }
+        flush = feof(source) ? Z_FINISH : Z_NO_FLUSH;
+        strm.next_in = in;
+
+        /* run deflate() on input until output buffer not full, finish
+           compression if all of source has been read in */
+        do {
+            strm.avail_out = CHUNK;
+            strm.next_out = out;
+            ret = deflate(&strm, flush);    /* no bad return value */
+            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
+            have = CHUNK - strm.avail_out;
+            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
+                (void)deflateEnd(&strm);
+                return Z_ERRNO;
+            }
+        } while (strm.avail_out == 0);
+        assert(strm.avail_in == 0);     /* all input will be used */
+
+        /* done when last data in file processed */
+    } while (flush != Z_FINISH);
+    assert(ret == Z_STREAM_END);        /* stream will be complete */
+
+    /* clean up and return */
+    (void)deflateEnd(&strm);
+    return Z_OK;
+}
+
+/* Decompress from file source to file dest until stream ends or EOF.
+   inf() returns Z_OK on success, Z_MEM_ERROR if memory could not be
+   allocated for processing, Z_DATA_ERROR if the deflate data is
+   invalid or incomplete, Z_VERSION_ERROR if the version of zlib.h and
+   the version of the library linked do not match, or Z_ERRNO if there
+   is an error reading or writing the files. */
+int inf(FILE *source, FILE *dest)
+{
+    int ret;
+    unsigned have;
+    z_stream strm;
+    unsigned char in[CHUNK];
+    unsigned char out[CHUNK];
+
+    /* allocate inflate state */
+    strm.zalloc = Z_NULL;
+    strm.zfree = Z_NULL;
+    strm.opaque = Z_NULL;
+    strm.avail_in = 0;
+    strm.next_in = Z_NULL;
+    ret = inflateInit(&strm);
+    if (ret != Z_OK)
+        return ret;
+
+    /* decompress until deflate stream ends or end of file */
+    do {
+        strm.avail_in = fread(in, 1, CHUNK, source);
+        if (ferror(source)) {
+            (void)inflateEnd(&strm);
+            return Z_ERRNO;
+        }
+        if (strm.avail_in == 0)
+            break;
+        strm.next_in = in;
+
+        /* run inflate() on input until output buffer not full */
+        do {
+            strm.avail_out = CHUNK;
+            strm.next_out = out;
+            ret = inflate(&strm, Z_NO_FLUSH);
+            assert(ret != Z_STREAM_ERROR);  /* state not clobbered */
+            switch (ret) {
+            case Z_NEED_DICT:
+                ret = Z_DATA_ERROR;     /* and fall through */
+            case Z_DATA_ERROR:
+            case Z_MEM_ERROR:
+                (void)inflateEnd(&strm);
+                return ret;
+            }
+            have = CHUNK - strm.avail_out;
+            if (fwrite(out, 1, have, dest) != have || ferror(dest)) {
+                (void)inflateEnd(&strm);
+                return Z_ERRNO;
+            }
+        } while (strm.avail_out == 0);
+
+        /* done when inflate() says it's done */
+    } while (ret != Z_STREAM_END);
+
+    /* clean up and return */
+    (void)inflateEnd(&strm);
+    return ret == Z_STREAM_END ? Z_OK : Z_DATA_ERROR;
+}
+
+/* report a zlib or i/o error */
+void zerr(int ret)
+{
+    fputs("zpipe: ", stderr);
+    switch (ret) {
+    case Z_ERRNO:
+        if (ferror(stdin))
+            fputs("error reading stdin\n", stderr);
+        if (ferror(stdout))
+            fputs("error writing stdout\n", stderr);
+        break;
+    case Z_STREAM_ERROR:
+        fputs("invalid compression level\n", stderr);
+        break;
+    case Z_DATA_ERROR:
+        fputs("invalid or incomplete deflate data\n", stderr);
+        break;
+    case Z_MEM_ERROR:
+        fputs("out of memory\n", stderr);
+        break;
+    case Z_VERSION_ERROR:
+        fputs("zlib version mismatch!\n", stderr);
+    }
+}
+
+/* compress or decompress from stdin to stdout */
+int main(int argc, char **argv)
+{
+    int ret;
+
+    /* avoid end-of-line conversions */
+    SET_BINARY_MODE(stdin);
+    SET_BINARY_MODE(stdout);
+
+    /* do compression if no arguments */
+    if (argc == 1) {
+        ret = def(stdin, stdout, Z_DEFAULT_COMPRESSION);
+        if (ret != Z_OK)
+            zerr(ret);
+        return ret;
+    }
+
+    /* do decompression if -d specified */
+    else if (argc == 2 && strcmp(argv[1], "-d") == 0) {
+        ret = inf(stdin, stdout);
+        if (ret != Z_OK)
+            zerr(ret);
+        return ret;
+    }
+
+    /* otherwise, report usage */
+    else {
+        fputs("zpipe usage: zpipe [-d] < source > dest\n", stderr);
+        return 1;
+    }
+}

deps/v8/third_party/zlib/google/BUILD.gn

@@ -0,0 +1,59 @@
+# Copyright 2017 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//build_overrides/build.gni")
+
+if (build_with_chromium && is_ios) {
+  import("//build/config/ios/bundle_data_from_filelist.gni")
+}
+
+if (build_with_chromium) {
+  static_library("zip") {
+    sources = [
+      "redact.h",
+      "zip.cc",
+      "zip.h",
+      "zip_internal.cc",
+      "zip_internal.h",
+      "zip_reader.cc",
+      "zip_reader.h",
+      "zip_writer.cc",
+      "zip_writer.h",
+    ]
+    deps = [
+      "..:minizip",
+      "//base",
+      "//base:i18n",
+    ]
+  }
+
+  static_library("compression_utils") {
+    sources = [
+      "compression_utils.cc",
+      "compression_utils.h",
+    ]
+    deps = [
+      "..",
+      "//base",
+    ]
+    public_deps = [ ":compression_utils_portable" ]
+  }
+
+  if (is_ios) {
+    bundle_data_from_filelist("zlib_pak_bundle_data") {
+      testonly = true
+      filelist_name = "test_data.filelist"
+    }
+  }
+}
+
+# This allows other users of Chromium's zlib library, but don't use Chromium's
+# //base, to reuse some boilerplate code.
+static_library("compression_utils_portable") {
+  sources = [
+    "compression_utils_portable.cc",
+    "compression_utils_portable.h",
+  ]
+  public_deps = [ ".." ]
+}

deps/v8/third_party/zlib/google/DEPS

@@ -0,0 +1,7 @@
+include_rules = [
+  '+base',
+  '+build',
+  '+testing',
+  '+third_party/icu/source/i18n/unicode',
+  '+third_party/zlib/zlib.h',
+]

deps/v8/third_party/zlib/google/OWNERS

@@ -0,0 +1,6 @@
+satorux@chromium.org
+
+# compression_utils*
+asvitkine@chromium.org
+isherman@chromium.org
+cavalcantii@chromium.org

deps/v8/third_party/zlib/google/compression_utils.cc

@@ -0,0 +1,132 @@
+// Copyright 2014 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/zlib/google/compression_utils.h"
+
+#include "base/check_op.h"
+#include "base/process/memory.h"
+
+#include "third_party/zlib/google/compression_utils_portable.h"
+
+namespace compression {
+
+bool GzipCompress(base::span<const char> input,
+                  char* output_buffer,
+                  size_t output_buffer_size,
+                  size_t* compressed_size,
+                  void* (*malloc_fn)(size_t),
+                  void (*free_fn)(void*)) {
+  static_assert(sizeof(Bytef) == 1, "");
+
+  // uLongf can be larger than size_t.
+  uLongf compressed_size_long = static_cast<uLongf>(output_buffer_size);
+  if (zlib_internal::GzipCompressHelper(
+          reinterpret_cast<Bytef*>(output_buffer), &compressed_size_long,
+          reinterpret_cast<const Bytef*>(input.data()),
+          static_cast<uLongf>(input.size()), malloc_fn, free_fn) != Z_OK) {
+    return false;
+  }
+  // No overflow, as compressed_size_long <= output.size() which is a size_t.
+  *compressed_size = static_cast<size_t>(compressed_size_long);
+  return true;
+}
+
+bool GzipCompress(base::span<const char> input, std::string* output) {
+  return GzipCompress(base::as_bytes(input), output);
+}
+
+bool GzipCompress(base::span<const uint8_t> input, std::string* output) {
+  // Not using std::vector<> because allocation failures are recoverable,
+  // which is hidden by std::vector<>.
+  static_assert(sizeof(Bytef) == 1, "");
+  const uLongf input_size = static_cast<uLongf>(input.size());
+
+  uLongf compressed_data_size =
+      zlib_internal::GzipExpectedCompressedSize(input_size);
+
+  Bytef* compressed_data;
+  if (!base::UncheckedMalloc(compressed_data_size,
+                             reinterpret_cast<void**>(&compressed_data))) {
+    return false;
+  }
+
+  if (zlib_internal::GzipCompressHelper(
+          compressed_data, &compressed_data_size,
+          reinterpret_cast<const Bytef*>(input.data()), input_size, nullptr,
+          nullptr) != Z_OK) {
+    free(compressed_data);
+    return false;
+  }
+
+  Bytef* resized_data =
+      reinterpret_cast<Bytef*>(realloc(compressed_data, compressed_data_size));
+  if (!resized_data) {
+    free(compressed_data);
+    return false;
+  }
+  output->assign(resized_data, resized_data + compressed_data_size);
+  DCHECK_EQ(input_size, GetUncompressedSize(*output));
+
+  free(resized_data);
+  return true;
+}
+
+bool GzipUncompress(const std::string& input, std::string* output) {
+  std::string uncompressed_output;
+  uLongf uncompressed_size = static_cast<uLongf>(GetUncompressedSize(input));
+  if (size_t{uncompressed_size} > uncompressed_output.max_size())
+    return false;
+
+  uncompressed_output.resize(uncompressed_size);
+  if (zlib_internal::GzipUncompressHelper(
+          reinterpret_cast<Bytef*>(uncompressed_output.data()),
+          &uncompressed_size, reinterpret_cast<const Bytef*>(input.data()),
+          static_cast<uLongf>(input.length())) == Z_OK) {
+    output->swap(uncompressed_output);
+    return true;
+  }
+  return false;
+}
+
+bool GzipUncompress(base::span<const char> input, base::span<char> output) {
+  return GzipUncompress(base::as_bytes(input), base::as_writable_bytes(output));
+}
+
+bool GzipUncompress(base::span<const uint8_t> input,
+                    base::span<uint8_t> output) {
+  uLongf uncompressed_size = GetUncompressedSize(input);
+  if (uncompressed_size > output.size())
+    return false;
+  return zlib_internal::GzipUncompressHelper(
+             reinterpret_cast<Bytef*>(output.data()), &uncompressed_size,
+             reinterpret_cast<const Bytef*>(input.data()),
+             static_cast<uLongf>(input.size())) == Z_OK;
+}
+
+bool GzipUncompress(base::span<const char> input, std::string* output) {
+  return GzipUncompress(base::as_bytes(input), output);
+}
+
+bool GzipUncompress(base::span<const uint8_t> input, std::string* output) {
+  // Disallow in-place usage, i.e., |input| using |*output| as underlying data.
+  DCHECK_NE(reinterpret_cast<const char*>(input.data()), output->data());
+  uLongf uncompressed_size = GetUncompressedSize(input);
+  output->resize(uncompressed_size);
+  return zlib_internal::GzipUncompressHelper(
+             reinterpret_cast<Bytef*>(output->data()), &uncompressed_size,
+             reinterpret_cast<const Bytef*>(input.data()),
+             static_cast<uLongf>(input.size())) == Z_OK;
+}
+
+uint32_t GetUncompressedSize(base::span<const char> compressed_data) {
+  return GetUncompressedSize(base::as_bytes(compressed_data));
+}
+
+uint32_t GetUncompressedSize(base::span<const uint8_t> compressed_data) {
+  return zlib_internal::GetGzipUncompressedSize(
+      reinterpret_cast<const Bytef*>(compressed_data.data()),
+      compressed_data.size());
+}
+
+}  // namespace compression

deps/v8/third_party/zlib/google/compression_utils.h

@@ -0,0 +1,69 @@
+// Copyright 2014 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_H_
+#define THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_H_
+
+#include <string>
+
+#include "base/containers/span.h"
+
+namespace compression {
+
+// Compresses the data in |input| using gzip, storing the result in
+// |output_buffer|, of size |output_buffer_size|. If the buffer is large enough
+// and compression succeeds, |compressed_size| points to the compressed data
+// size after the call.
+// |malloc_fn| and |free_fn| are pointers to malloc() and free()-like functions,
+// or nullptr to use the standard ones.
+// Returns true for success.
+bool GzipCompress(base::span<const char> input,
+                  char* output_buffer,
+                  size_t output_buffer_size,
+                  size_t* compressed_size,
+                  void* (*malloc_fn)(size_t),
+                  void (*free_fn)(void*));
+
+// Compresses the data in |input| using gzip, storing the result in |output|.
+// |input| and |output| are allowed to point to the same string (in-place
+// operation).
+// Returns true for success.
+bool GzipCompress(base::span<const char> input, std::string* output);
+
+// Like the above method, but using uint8_t instead.
+bool GzipCompress(base::span<const uint8_t> input, std::string* output);
+
+// Uncompresses the data in |input| using gzip, storing the result in |output|.
+// |input| and |output| are allowed to be the same string (in-place operation).
+// Returns true for success.
+bool GzipUncompress(const std::string& input, std::string* output);
+
+// Like the above method, but uses base::span to avoid allocations if
+// needed. |output|'s size must be at least as large as the return value from
+// GetUncompressedSize.
+// Returns true for success.
+bool GzipUncompress(base::span<const char> input, base::span<char> output);
+
+// Like the above method, but using uint8_t instead.
+bool GzipUncompress(base::span<const uint8_t> input,
+                    base::span<uint8_t> output);
+
+// Uncompresses the data in |input| using gzip, and writes the results to
+// |output|, which must NOT be the underlying string of |input|, and is resized
+// if necessary.
+// Returns true for success.
+bool GzipUncompress(base::span<const char> input, std::string* output);
+
+// Like the above method, but using uint8_t instead.
+bool GzipUncompress(base::span<const uint8_t> input, std::string* output);
+
+// Returns the uncompressed size from GZIP-compressed |compressed_data|.
+uint32_t GetUncompressedSize(base::span<const char> compressed_data);
+
+// Like the above method, but using uint8_t instead.
+uint32_t GetUncompressedSize(base::span<const uint8_t> compressed_data);
+
+}  // namespace compression
+
+#endif  // THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_H_

deps/v8/third_party/zlib/google/compression_utils_portable.cc

@@ -0,0 +1,205 @@
+/* compression_utils_portable.cc
+ *
+ * Copyright 2019 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+
+#include "compression_utils_portable.h"
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+namespace zlib_internal {
+
+// The difference in bytes between a zlib header and a gzip header.
+const size_t kGzipZlibHeaderDifferenceBytes = 16;
+
+// Pass an integer greater than the following get a gzip header instead of a
+// zlib header when calling deflateInit2() and inflateInit2().
+const int kWindowBitsToGetGzipHeader = 16;
+
+// This describes the amount of memory zlib uses to compress data. It can go
+// from 1 to 9, with 8 being the default. For details, see:
+// http://www.zlib.net/manual.html (search for memLevel).
+const int kZlibMemoryLevel = 8;
+
+// The expected compressed size is based on the input size factored by
+// internal Zlib constants (e.g. window size, etc) plus the wrapper
+// header size.
+uLongf GzipExpectedCompressedSize(uLongf input_size) {
+  return kGzipZlibHeaderDifferenceBytes + compressBound(input_size);
+}
+
+// The expected decompressed size is stored in the last
+// 4 bytes of |input| in LE. See https://tools.ietf.org/html/rfc1952#page-5
+uint32_t GetGzipUncompressedSize(const Bytef* compressed_data, size_t length) {
+  uint32_t size;
+  if (length < sizeof(size))
+    return 0;
+
+  memcpy(&size, &compressed_data[length - sizeof(size)], sizeof(size));
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+  return size;
+#else
+  return __builtin_bswap32(size);
+#endif
+}
+
+// The number of window bits determines the type of wrapper to use - see
+// https://cs.chromium.org/chromium/src/third_party/zlib/zlib.h?l=566
+inline int ZlibStreamWrapperType(WrapperType type) {
+  if (type == ZLIB)  // zlib DEFLATE stream wrapper
+    return MAX_WBITS;
+  if (type == GZIP)  // gzip DEFLATE stream wrapper
+    return MAX_WBITS + kWindowBitsToGetGzipHeader;
+  if (type == ZRAW)  // no wrapper, use raw DEFLATE
+    return -MAX_WBITS;
+  return 0;
+}
+
+int GzipCompressHelper(Bytef* dest,
+                       uLongf* dest_length,
+                       const Bytef* source,
+                       uLong source_length,
+                       void* (*malloc_fn)(size_t),
+                       void (*free_fn)(void*)) {
+  return CompressHelper(GZIP, dest, dest_length, source, source_length,
+                        Z_DEFAULT_COMPRESSION, malloc_fn, free_fn);
+}
+
+// This code is taken almost verbatim from third_party/zlib/compress.c. The only
+// difference is deflateInit2() is called which allows different window bits to
+// be set. > 16 causes a gzip header to be emitted rather than a zlib header,
+// and negative causes no header to emitted.
+//
+// Compression level can be a number from 1-9, with 1 being the fastest, 9 being
+// the best compression. The default, which the GZIP helper uses, is 6.
+int CompressHelper(WrapperType wrapper_type,
+                   Bytef* dest,
+                   uLongf* dest_length,
+                   const Bytef* source,
+                   uLong source_length,
+                   int compression_level,
+                   void* (*malloc_fn)(size_t),
+                   void (*free_fn)(void*)) {
+  if (compression_level < 0 || compression_level > 9) {
+    compression_level = Z_DEFAULT_COMPRESSION;
+  }
+
+  z_stream stream;
+
+  // FIXME(cavalcantii): z_const is not defined as 'const'.
+  stream.next_in = static_cast<z_const Bytef*>(const_cast<Bytef*>(source));
+  stream.avail_in = static_cast<uInt>(source_length);
+  stream.next_out = dest;
+  stream.avail_out = static_cast<uInt>(*dest_length);
+  if (static_cast<uLong>(stream.avail_out) != *dest_length)
+    return Z_BUF_ERROR;
+
+  // Cannot convert capturing lambdas to function pointers directly, hence the
+  // structure.
+  struct MallocFreeFunctions {
+    void* (*malloc_fn)(size_t);
+    void (*free_fn)(void*);
+  } malloc_free = {malloc_fn, free_fn};
+
+  if (malloc_fn) {
+    if (!free_fn)
+      return Z_BUF_ERROR;
+
+    auto zalloc = [](void* opaque, uInt items, uInt size) {
+      return reinterpret_cast<MallocFreeFunctions*>(opaque)->malloc_fn(items *
+                                                                       size);
+    };
+    auto zfree = [](void* opaque, void* address) {
+      return reinterpret_cast<MallocFreeFunctions*>(opaque)->free_fn(address);
+    };
+
+    stream.zalloc = static_cast<alloc_func>(zalloc);
+    stream.zfree = static_cast<free_func>(zfree);
+    stream.opaque = static_cast<voidpf>(&malloc_free);
+  } else {
+    stream.zalloc = static_cast<alloc_func>(0);
+    stream.zfree = static_cast<free_func>(0);
+    stream.opaque = static_cast<voidpf>(0);
+  }
+
+  int err = deflateInit2(&stream, compression_level, Z_DEFLATED,
+                         ZlibStreamWrapperType(wrapper_type), kZlibMemoryLevel,
+                         Z_DEFAULT_STRATEGY);
+  if (err != Z_OK)
+    return err;
+
+  // This has to exist outside of the if statement to prevent it going off the
+  // stack before deflate(), which will use this object.
+  gz_header gzip_header;
+  if (wrapper_type == GZIP) {
+    memset(&gzip_header, 0, sizeof(gzip_header));
+    err = deflateSetHeader(&stream, &gzip_header);
+    if (err != Z_OK)
+      return err;
+  }
+
+  err = deflate(&stream, Z_FINISH);
+  if (err != Z_STREAM_END) {
+    deflateEnd(&stream);
+    return err == Z_OK ? Z_BUF_ERROR : err;
+  }
+  *dest_length = stream.total_out;
+
+  err = deflateEnd(&stream);
+  return err;
+}
+
+int GzipUncompressHelper(Bytef* dest,
+                         uLongf* dest_length,
+                         const Bytef* source,
+                         uLong source_length) {
+  return UncompressHelper(GZIP, dest, dest_length, source, source_length);
+}
+
+// This code is taken almost verbatim from third_party/zlib/uncompr.c. The only
+// difference is inflateInit2() is called which allows different window bits to
+// be set. > 16 causes a gzip header to be emitted rather than a zlib header,
+// and negative causes no header to emitted.
+int UncompressHelper(WrapperType wrapper_type,
+                     Bytef* dest,
+                     uLongf* dest_length,
+                     const Bytef* source,
+                     uLong source_length) {
+  z_stream stream;
+
+  // FIXME(cavalcantii): z_const is not defined as 'const'.
+  stream.next_in = static_cast<z_const Bytef*>(const_cast<Bytef*>(source));
+  stream.avail_in = static_cast<uInt>(source_length);
+  if (static_cast<uLong>(stream.avail_in) != source_length)
+    return Z_BUF_ERROR;
+
+  stream.next_out = dest;
+  stream.avail_out = static_cast<uInt>(*dest_length);
+  if (static_cast<uLong>(stream.avail_out) != *dest_length)
+    return Z_BUF_ERROR;
+
+  stream.zalloc = static_cast<alloc_func>(0);
+  stream.zfree = static_cast<free_func>(0);
+
+  int err = inflateInit2(&stream, ZlibStreamWrapperType(wrapper_type));
+  if (err != Z_OK)
+    return err;
+
+  err = inflate(&stream, Z_FINISH);
+  if (err != Z_STREAM_END) {
+    inflateEnd(&stream);
+    if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
+      return Z_DATA_ERROR;
+    return err;
+  }
+  *dest_length = stream.total_out;
+
+  err = inflateEnd(&stream);
+  return err;
+}
+
+}  // namespace zlib_internal

deps/v8/third_party/zlib/google/compression_utils_portable.h

@@ -0,0 +1,63 @@
+/* compression_utils_portable.h
+ *
+ * Copyright 2019 The Chromium Authors
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the Chromium source repository LICENSE file.
+ */
+#ifndef THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_PORTABLE_H_
+#define THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_PORTABLE_H_
+
+#include <stdint.h>
+
+/* TODO(cavalcantii): remove support for Chromium ever building with a system
+ * zlib.
+ */
+#if defined(USE_SYSTEM_ZLIB)
+#include <zlib.h>
+/* AOSP build requires relative paths. */
+#else
+#include "zlib.h"
+#endif
+
+namespace zlib_internal {
+
+enum WrapperType {
+  ZLIB,
+  GZIP,
+  ZRAW,
+};
+
+uLongf GzipExpectedCompressedSize(uLongf input_size);
+
+uint32_t GetGzipUncompressedSize(const Bytef* compressed_data, size_t length);
+
+int GzipCompressHelper(Bytef* dest,
+                       uLongf* dest_length,
+                       const Bytef* source,
+                       uLong source_length,
+                       void* (*malloc_fn)(size_t),
+                       void (*free_fn)(void*));
+
+int CompressHelper(WrapperType wrapper_type,
+                   Bytef* dest,
+                   uLongf* dest_length,
+                   const Bytef* source,
+                   uLong source_length,
+                   int compression_level,
+                   void* (*malloc_fn)(size_t),
+                   void (*free_fn)(void*));
+
+int GzipUncompressHelper(Bytef* dest,
+                         uLongf* dest_length,
+                         const Bytef* source,
+                         uLong source_length);
+
+int UncompressHelper(WrapperType wrapper_type,
+                     Bytef* dest,
+                     uLongf* dest_length,
+                     const Bytef* source,
+                     uLong source_length);
+
+}  // namespace zlib_internal
+
+#endif  // THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_PORTABLE_H_

deps/v8/third_party/zlib/google/compression_utils_unittest.cc

@@ -0,0 +1,99 @@
+// Copyright 2014 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/zlib/google/compression_utils.h"
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <iterator>
+#include <string>
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace compression {
+
+namespace {
+
+// The data to be compressed by gzip. This is the hex representation of "hello
+// world".
+const uint8_t kData[] = {0x68, 0x65, 0x6c, 0x6c, 0x6f, 0x20,
+                         0x77, 0x6f, 0x72, 0x6c, 0x64};
+
+// This is the string representation of gzip compressed string above. It was
+// obtained by running echo -n "hello world" | gzip -c | hexdump -e '8 1 ",
+// 0x%x"' followed by 0'ing out the OS byte (10th byte) in the header. This is
+// so that the test passes on all platforms (that run various OS'es).
+const uint8_t kCompressedData[] = {
+    0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xcb,
+    0x48, 0xcd, 0xc9, 0xc9, 0x57, 0x28, 0xcf, 0x2f, 0xca, 0x49, 0x01,
+    0x00, 0x85, 0x11, 0x4a, 0x0d, 0x0b, 0x00, 0x00, 0x00};
+
+}  // namespace
+
+TEST(CompressionUtilsTest, GzipCompression) {
+  std::string data(reinterpret_cast<const char*>(kData), std::size(kData));
+  std::string compressed_data;
+  EXPECT_TRUE(GzipCompress(data, &compressed_data));
+  std::string golden_compressed_data(
+      reinterpret_cast<const char*>(kCompressedData),
+      std::size(kCompressedData));
+  EXPECT_EQ(golden_compressed_data, compressed_data);
+}
+
+TEST(CompressionUtilsTest, GzipUncompression) {
+  std::string compressed_data(reinterpret_cast<const char*>(kCompressedData),
+                              std::size(kCompressedData));
+
+  std::string uncompressed_data;
+  EXPECT_TRUE(GzipUncompress(compressed_data, &uncompressed_data));
+
+  std::string golden_data(reinterpret_cast<const char*>(kData),
+                          std::size(kData));
+  EXPECT_EQ(golden_data, uncompressed_data);
+}
+
+TEST(CompressionUtilsTest, GzipUncompressionFromSpanToString) {
+  std::string uncompressed_data;
+  EXPECT_TRUE(GzipUncompress(kCompressedData, &uncompressed_data));
+
+  std::string golden_data(reinterpret_cast<const char*>(kData),
+                          std::size(kData));
+  EXPECT_EQ(golden_data, uncompressed_data);
+}
+
+// Checks that compressing/decompressing input > 256 bytes works as expected.
+TEST(CompressionUtilsTest, LargeInput) {
+  const size_t kSize = 32 * 1024;
+
+  // Generate a data string of |kSize| for testing.
+  std::string data;
+  data.resize(kSize);
+  for (size_t i = 0; i < kSize; ++i)
+    data[i] = static_cast<char>(i & 0xFF);
+
+  std::string compressed_data;
+  EXPECT_TRUE(GzipCompress(data, &compressed_data));
+
+  std::string uncompressed_data;
+  EXPECT_TRUE(GzipUncompress(compressed_data, &uncompressed_data));
+
+  EXPECT_EQ(data, uncompressed_data);
+}
+
+TEST(CompressionUtilsTest, InPlace) {
+  const std::string original_data(reinterpret_cast<const char*>(kData),
+                                  std::size(kData));
+  const std::string golden_compressed_data(
+      reinterpret_cast<const char*>(kCompressedData),
+      std::size(kCompressedData));
+
+  std::string data(original_data);
+  EXPECT_TRUE(GzipCompress(data, &data));
+  EXPECT_EQ(golden_compressed_data, data);
+  EXPECT_TRUE(GzipUncompress(data, &data));
+  EXPECT_EQ(original_data, data);
+}
+
+}  // namespace compression

deps/v8/third_party/zlib/google/redact.h

@@ -0,0 +1,31 @@
+// Copyright 2022 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+#ifndef THIRD_PARTY_ZLIB_GOOGLE_REDACT_H_
+#define THIRD_PARTY_ZLIB_GOOGLE_REDACT_H_
+
+#include <ostream>
+
+#include "base/files/file_path.h"
+#include "base/logging.h"
+
+namespace zip {
+
+// Redacts file paths in log messages.
+// Example:
+// LOG(ERROR) << "Cannot open " << Redact(path);
+class Redact {
+ public:
+  explicit Redact(const base::FilePath& path) : path_(path) {}
+
+  friend std::ostream& operator<<(std::ostream& out, const Redact&& r) {
+    return LOG_IS_ON(INFO) ? out << "'" << r.path_ << "'" : out << "(redacted)";
+  }
+
+ private:
+  const base::FilePath& path_;
+};
+
+}  // namespace zip
+
+#endif  // THIRD_PARTY_ZLIB_GOOGLE_REDACT_H_

deps/v8/third_party/zlib/google/test_data.filelist

@@ -0,0 +1,32 @@
+# Copyright 2023 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+# NOTE: this file is generated by build/ios/update_bundle_filelist.py
+#       If it requires updating, you should get a presubmit error with
+#       instructions on how to regenerate. Otherwise, do not edit.
+test/data/Different Encryptions.zip
+test/data/Empty Dir Same Name As File.zip
+test/data/Mixed Paths.zip
+test/data/Parent Dir Same Name As File.zip
+test/data/README.md
+test/data/Repeated Dir Name.zip
+test/data/Repeated File Name With Different Cases.zip
+test/data/Repeated File Name.zip
+test/data/SJIS Bug 846195.zip
+test/data/Windows Special Names.zip
+test/data/Wrong CRC.zip
+test/data/create_test_zip.sh
+test/data/empty.zip
+test/data/evil.zip
+test/data/evil_via_absolute_file_name.zip
+test/data/evil_via_invalid_utf8.zip
+test/data/test.zip
+test/data/test/foo.txt
+test/data/test/foo/bar.txt
+test/data/test/foo/bar/.hidden
+test/data/test/foo/bar/baz.txt
+test/data/test/foo/bar/quux.txt
+test/data/test_encrypted.zip
+test/data/test_mismatch_size.zip
+test/data/test_nocompress.zip
+test/data/test_posix_permissions.zip

deps/v8/third_party/zlib/google/test_data.globlist

@@ -0,0 +1,8 @@
+# Copyright 2023 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# See build/ios/update_bundle_filelist.py for details on how .globlist
+# files are used to update their .filelist counterparts.
+test/data/**
+test/data/test/foo/bar/.hidden

deps/v8/third_party/zlib/google/zip.cc

@@ -0,0 +1,274 @@
+// Copyright 2012 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/zlib/google/zip.h"
+
+#include <string>
+#include <vector>
+
+#include "base/files/file.h"
+#include "base/files/file_enumerator.h"
+#include "base/files/file_util.h"
+#include "base/functional/bind.h"
+#include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "base/strings/string_util.h"
+#include "build/build_config.h"
+#include "third_party/zlib/google/redact.h"
+#include "third_party/zlib/google/zip_internal.h"
+#include "third_party/zlib/google/zip_reader.h"
+#include "third_party/zlib/google/zip_writer.h"
+
+namespace zip {
+namespace {
+
+bool IsHiddenFile(const base::FilePath& file_path) {
+  return file_path.BaseName().value()[0] == '.';
+}
+
+// Creates a directory at |extract_dir|/|entry_path|, including any parents.
+bool CreateDirectory(const base::FilePath& extract_dir,
+                     const base::FilePath& entry_path) {
+  const base::FilePath dir = extract_dir.Append(entry_path);
+  const bool ok = base::CreateDirectory(dir);
+  PLOG_IF(ERROR, !ok) << "Cannot create directory " << Redact(dir);
+  return ok;
+}
+
+// Creates a WriterDelegate that can write a file at |extract_dir|/|entry_path|.
+std::unique_ptr<WriterDelegate> CreateFilePathWriterDelegate(
+    const base::FilePath& extract_dir,
+    const base::FilePath& entry_path) {
+  return std::make_unique<FilePathWriterDelegate>(
+      extract_dir.Append(entry_path));
+}
+
+class DirectFileAccessor : public FileAccessor {
+ public:
+  explicit DirectFileAccessor(base::FilePath src_dir)
+      : src_dir_(std::move(src_dir)) {}
+
+  ~DirectFileAccessor() override = default;
+
+  bool Open(const Paths paths, std::vector<base::File>* const files) override {
+    DCHECK(files);
+    files->reserve(files->size() + paths.size());
+
+    for (const base::FilePath& path : paths) {
+      DCHECK(!path.IsAbsolute());
+      const base::FilePath absolute_path = src_dir_.Append(path);
+      if (base::DirectoryExists(absolute_path)) {
+        files->emplace_back();
+        LOG(ERROR) << "Cannot open " << Redact(path) << ": It is a directory";
+      } else {
+        const base::File& file = files->emplace_back(
+            absolute_path, base::File::FLAG_OPEN | base::File::FLAG_READ);
+        LOG_IF(ERROR, !file.IsValid())
+            << "Cannot open " << Redact(path) << ": "
+            << base::File::ErrorToString(file.error_details());
+      }
+    }
+
+    return true;
+  }
+
+  bool List(const base::FilePath& path,
+            std::vector<base::FilePath>* const files,
+            std::vector<base::FilePath>* const subdirs) override {
+    DCHECK(!path.IsAbsolute());
+    DCHECK(files);
+    DCHECK(subdirs);
+
+    base::FileEnumerator file_enumerator(
+        src_dir_.Append(path), false /* recursive */,
+        base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES);
+
+    while (!file_enumerator.Next().empty()) {
+      const base::FileEnumerator::FileInfo info = file_enumerator.GetInfo();
+      (info.IsDirectory() ? subdirs : files)
+          ->push_back(path.Append(info.GetName()));
+    }
+
+    return true;
+  }
+
+  bool GetInfo(const base::FilePath& path, Info* const info) override {
+    DCHECK(!path.IsAbsolute());
+    DCHECK(info);
+
+    base::File::Info file_info;
+    if (!base::GetFileInfo(src_dir_.Append(path), &file_info)) {
+      PLOG(ERROR) << "Cannot get info of " << Redact(path);
+      return false;
+    }
+
+    info->is_directory = file_info.is_directory;
+    info->last_modified = file_info.last_modified;
+
+    return true;
+  }
+
+ private:
+  const base::FilePath src_dir_;
+};
+
+}  // namespace
+
+std::ostream& operator<<(std::ostream& out, const Progress& progress) {
+  return out << progress.bytes << " bytes, " << progress.files << " files, "
+             << progress.directories << " dirs, " << progress.errors
+             << " errors";
+}
+
+bool Zip(const ZipParams& params) {
+  DirectFileAccessor default_accessor(params.src_dir);
+  FileAccessor* const file_accessor = params.file_accessor ?: &default_accessor;
+
+  std::unique_ptr<internal::ZipWriter> zip_writer;
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+  if (params.dest_fd != base::kInvalidPlatformFile) {
+    DCHECK(params.dest_file.empty());
+    zip_writer =
+        internal::ZipWriter::CreateWithFd(params.dest_fd, file_accessor);
+    if (!zip_writer)
+      return false;
+  }
+#endif
+
+  if (!zip_writer) {
+    zip_writer = internal::ZipWriter::Create(params.dest_file, file_accessor);
+    if (!zip_writer)
+      return false;
+  }
+
+  zip_writer->SetProgressCallback(params.progress_callback,
+                                  params.progress_period);
+  zip_writer->SetRecursive(params.recursive);
+  zip_writer->ContinueOnError(params.continue_on_error);
+
+  if (!params.include_hidden_files || params.filter_callback)
+    zip_writer->SetFilterCallback(base::BindRepeating(
+        [](const ZipParams* const params, const base::FilePath& path) -> bool {
+          return (params->include_hidden_files || !IsHiddenFile(path)) &&
+                 (!params->filter_callback ||
+                  params->filter_callback.Run(params->src_dir.Append(path)));
+        },
+        &params));
+
+  if (params.src_files.empty()) {
+    // No source items are specified. Zip the entire source directory.
+    zip_writer->SetRecursive(true);
+    if (!zip_writer->AddDirectoryContents(base::FilePath()))
+      return false;
+  } else {
+    // Only zip the specified source items.
+    if (!zip_writer->AddMixedEntries(params.src_files))
+      return false;
+  }
+
+  return zip_writer->Close();
+}
+
+bool Unzip(const base::FilePath& src_file,
+           const base::FilePath& dest_dir,
+           UnzipOptions options) {
+  base::File file(src_file, base::File::FLAG_OPEN | base::File::FLAG_READ);
+  if (!file.IsValid()) {
+    PLOG(ERROR) << "Cannot open " << Redact(src_file) << ": "
+                << base::File::ErrorToString(file.error_details());
+    return false;
+  }
+
+  DLOG_IF(WARNING, !base::IsDirectoryEmpty(dest_dir))
+      << "ZIP extraction directory is not empty: " << dest_dir;
+
+  return Unzip(file.GetPlatformFile(),
+               base::BindRepeating(&CreateFilePathWriterDelegate, dest_dir),
+               base::BindRepeating(&CreateDirectory, dest_dir),
+               std::move(options));
+}
+
+bool Unzip(const base::PlatformFile& src_file,
+           WriterFactory writer_factory,
+           DirectoryCreator directory_creator,
+           UnzipOptions options) {
+  ZipReader reader;
+  reader.SetEncoding(std::move(options.encoding));
+  reader.SetPassword(std::move(options.password));
+
+  if (!reader.OpenFromPlatformFile(src_file)) {
+    LOG(ERROR) << "Cannot open ZIP from file handle " << src_file;
+    return false;
+  }
+
+  while (const ZipReader::Entry* const entry = reader.Next()) {
+    if (entry->is_unsafe) {
+      LOG(ERROR) << "Found unsafe entry " << Redact(entry->path) << " in ZIP";
+      if (!options.continue_on_error)
+        return false;
+      continue;
+    }
+
+    if (options.filter && !options.filter.Run(entry->path)) {
+      VLOG(1) << "Skipped ZIP entry " << Redact(entry->path);
+      continue;
+    }
+
+    if (entry->is_directory) {
+      // It's a directory.
+      if (!directory_creator.Run(entry->path)) {
+        LOG(ERROR) << "Cannot create directory " << Redact(entry->path);
+        if (!options.continue_on_error)
+          return false;
+      }
+
+      continue;
+    }
+
+    // It's a file.
+    std::unique_ptr<WriterDelegate> writer = writer_factory.Run(entry->path);
+    if (!writer ||
+        (options.progress ? !reader.ExtractCurrentEntryWithListener(
+                                writer.get(), options.progress)
+                          : !reader.ExtractCurrentEntry(writer.get()))) {
+      LOG(ERROR) << "Cannot extract file " << Redact(entry->path)
+                 << " from ZIP";
+      if (!options.continue_on_error)
+        return false;
+    }
+  }
+
+  return reader.ok();
+}
+
+bool ZipWithFilterCallback(const base::FilePath& src_dir,
+                           const base::FilePath& dest_file,
+                           FilterCallback filter) {
+  DCHECK(base::DirectoryExists(src_dir));
+  return Zip({.src_dir = src_dir,
+              .dest_file = dest_file,
+              .filter_callback = std::move(filter)});
+}
+
+bool Zip(const base::FilePath& src_dir,
+         const base::FilePath& dest_file,
+         bool include_hidden_files) {
+  return Zip({.src_dir = src_dir,
+              .dest_file = dest_file,
+              .include_hidden_files = include_hidden_files});
+}
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+bool ZipFiles(const base::FilePath& src_dir,
+              Paths src_relative_paths,
+              int dest_fd) {
+  DCHECK(base::DirectoryExists(src_dir));
+  return Zip({.src_dir = src_dir,
+              .dest_fd = dest_fd,
+              .src_files = src_relative_paths});
+}
+#endif  // defined(OS_POSIX) || defined(OS_FUCHSIA)
+
+}  // namespace zip

deps/v8/third_party/zlib/google/zip.h

@@ -0,0 +1,219 @@
+// Copyright 2011 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_ZLIB_GOOGLE_ZIP_H_
+#define THIRD_PARTY_ZLIB_GOOGLE_ZIP_H_
+
+#include <cstdint>
+#include <ostream>
+#include <utility>
+#include <vector>
+
+#include "base/containers/span.h"
+#include "base/files/file_path.h"
+#include "base/files/platform_file.h"
+#include "base/functional/callback.h"
+#include "base/time/time.h"
+#include "build/build_config.h"
+
+namespace base {
+class File;
+}
+
+namespace zip {
+
+class WriterDelegate;
+
+// Paths passed as span to avoid copying them.
+using Paths = base::span<const base::FilePath>;
+
+// Abstraction for file access operation required by Zip().
+//
+// Can be passed to the ZipParams for providing custom access to the files,
+// for example over IPC.
+//
+// All parameters paths are expected to be relative to the source directory.
+class FileAccessor {
+ public:
+  virtual ~FileAccessor() = default;
+
+  struct Info {
+    bool is_directory = false;
+    base::Time last_modified;
+  };
+
+  // Opens files specified in |paths|.
+  // Directories should be mapped to invalid files.
+  virtual bool Open(Paths paths, std::vector<base::File>* files) = 0;
+
+  // Lists contents of a directory at |path|.
+  virtual bool List(const base::FilePath& path,
+                    std::vector<base::FilePath>* files,
+                    std::vector<base::FilePath>* subdirs) = 0;
+
+  // Gets info about a file or directory.
+  virtual bool GetInfo(const base::FilePath& path, Info* info) = 0;
+};
+
+// Progress of a ZIP creation operation.
+struct Progress {
+  // Total number of bytes read from files getting zipped so far.
+  std::int64_t bytes = 0;
+
+  // Number of file entries added to the ZIP so far.
+  // A file entry is added after its bytes have been processed.
+  int files = 0;
+
+  // Number of directory entries added to the ZIP so far.
+  // A directory entry is added before items in it.
+  int directories = 0;
+
+  // Number of errors encountered so far (files that cannot be opened,
+  // directories that cannot be listed).
+  int errors = 0;
+};
+
+// Prints Progress to output stream.
+std::ostream& operator<<(std::ostream& out, const Progress& progress);
+
+// Callback reporting the progress of a ZIP creation operation.
+//
+// This callback returns a boolean indicating whether the ZIP creation operation
+// should continue. If it returns false once, then the ZIP creation operation is
+// immediately cancelled and the callback won't be called again.
+using ProgressCallback = base::RepeatingCallback<bool(const Progress&)>;
+
+using FilterCallback = base::RepeatingCallback<bool(const base::FilePath&)>;
+
+// ZIP creation parameters and options.
+struct ZipParams {
+  // Source directory. Ignored if |file_accessor| is set.
+  base::FilePath src_dir;
+
+  // Abstraction around file system access used to read files.
+  // If left null, an implementation that accesses files directly is used.
+  FileAccessor* file_accessor = nullptr;  // Not owned
+
+  // Destination file path.
+  // Either dest_file or dest_fd should be set, but not both.
+  base::FilePath dest_file;
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+  // Destination file passed a file descriptor.
+  // Either dest_file or dest_fd should be set, but not both.
+  int dest_fd = base::kInvalidPlatformFile;
+#endif
+
+  // The relative paths to the files and directories that should be included in
+  // the ZIP file. If this is empty, the whole contents of |src_dir| are
+  // included.
+  //
+  // These paths must be relative to |src_dir| and will be used as the file
+  // names in the created ZIP file. All files must be under |src_dir| in the
+  // file system hierarchy.
+  //
+  // All the paths in |src_files| are included in the created ZIP file,
+  // irrespective of |include_hidden_files| and |filter_callback|.
+  Paths src_files;
+
+  // Filter used to exclude files from the ZIP file. This is only taken in
+  // account when recursively adding subdirectory contents.
+  FilterCallback filter_callback;
+
+  // Optional progress reporting callback.
+  ProgressCallback progress_callback;
+
+  // Progress reporting period. The final callback is always called when the ZIP
+  // creation operation completes.
+  base::TimeDelta progress_period;
+
+  // Should add hidden files? This is only taken in account when recursively
+  // adding subdirectory contents.
+  bool include_hidden_files = true;
+
+  // Should recursively add subdirectory contents?
+  bool recursive = false;
+
+  // Should ignore errors when discovering files and zipping them?
+  bool continue_on_error = false;
+};
+
+// Zip files specified into a ZIP archives. The source files and ZIP destination
+// files (as well as other settings) are specified in |params|.
+bool Zip(const ZipParams& params);
+
+// Zip the contents of src_dir into dest_file. src_path must be a directory.
+// An entry will *not* be created in the zip for the root folder -- children
+// of src_dir will be at the root level of the created zip. For each file in
+// src_dir, include it only if the callback |filter_cb| returns true. Otherwise
+// omit it.
+bool ZipWithFilterCallback(const base::FilePath& src_dir,
+                           const base::FilePath& dest_file,
+                           FilterCallback filter_cb);
+
+// Convenience method for callers who don't need to set up the filter callback.
+// If |include_hidden_files| is true, files starting with "." are included.
+// Otherwise they are omitted.
+bool Zip(const base::FilePath& src_dir,
+         const base::FilePath& dest_file,
+         bool include_hidden_files);
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+// Zips files listed in |src_relative_paths| to destination specified by file
+// descriptor |dest_fd|, without taking ownership of |dest_fd|. The paths listed
+// in |src_relative_paths| are relative to the |src_dir| and will be used as the
+// file names in the created zip file. All source paths must be under |src_dir|
+// in the file system hierarchy.
+bool ZipFiles(const base::FilePath& src_dir,
+              Paths src_relative_paths,
+              int dest_fd);
+#endif  // defined(OS_POSIX) || defined(OS_FUCHSIA)
+
+// Callback reporting the number of bytes written during Unzip.
+using UnzipProgressCallback = base::RepeatingCallback<void(uint64_t bytes)>;
+
+// Options of the Unzip function, with valid default values.
+struct UnzipOptions {
+  // Encoding of entry paths in the ZIP archive. By default, paths are assumed
+  // to be in UTF-8.
+  std::string encoding;
+
+  // Only extract the entries for which |filter_cb| returns true. By default,
+  // everything gets extracted.
+  FilterCallback filter;
+
+  // Callback to report bytes extracted from the ZIP.
+  UnzipProgressCallback progress;
+
+  // Password to decrypt the encrypted files.
+  std::string password;
+
+  // Should ignore errors when extracting files?
+  bool continue_on_error = false;
+};
+
+typedef base::RepeatingCallback<std::unique_ptr<WriterDelegate>(
+    const base::FilePath&)>
+    WriterFactory;
+
+typedef base::RepeatingCallback<bool(const base::FilePath&)> DirectoryCreator;
+
+// Unzips the contents of |zip_file|, using the writers provided by
+// |writer_factory|.
+bool Unzip(const base::PlatformFile& zip_file,
+           WriterFactory writer_factory,
+           DirectoryCreator directory_creator,
+           UnzipOptions options = {});
+
+// Unzips the contents of |zip_file| into |dest_dir|.
+// This function does not overwrite any existing file.
+// A filename collision will result in an error.
+// Therefore, |dest_dir| should initially be an empty directory.
+bool Unzip(const base::FilePath& zip_file,
+           const base::FilePath& dest_dir,
+           UnzipOptions options = {});
+
+}  // namespace zip
+
+#endif  // THIRD_PARTY_ZLIB_GOOGLE_ZIP_H_

deps/v8/third_party/zlib/google/zip_internal.cc

@@ -0,0 +1,465 @@
+// Copyright 2011 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/zlib/google/zip_internal.h"
+
+#include <stddef.h>
+#include <string.h>
+
+#include <algorithm>
+#include <string_view>
+
+#include "base/containers/fixed_flat_set.h"
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "base/notreached.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+
+#if defined(USE_SYSTEM_MINIZIP)
+#include <minizip/ioapi.h>
+#include <minizip/unzip.h>
+#include <minizip/zip.h>
+#else
+#include "third_party/zlib/contrib/minizip/unzip.h"
+#include "third_party/zlib/contrib/minizip/zip.h"
+#if defined(OS_WIN)
+#include "third_party/zlib/contrib/minizip/iowin32.h"
+#elif defined(OS_POSIX)
+#include "third_party/zlib/contrib/minizip/ioapi.h"
+#endif  // defined(OS_POSIX)
+#endif  // defined(USE_SYSTEM_MINIZIP)
+
+namespace {
+
+#if defined(OS_WIN)
+typedef struct {
+  HANDLE hf;
+  int error;
+} WIN32FILE_IOWIN;
+
+// This function is derived from third_party/minizip/iowin32.c.
+// Its only difference is that it treats the filename as UTF-8 and
+// uses the Unicode version of CreateFile.
+void* ZipOpenFunc(void* opaque, const void* filename, int mode) {
+  DWORD desired_access = 0, creation_disposition = 0;
+  DWORD share_mode = 0, flags_and_attributes = 0;
+  HANDLE file = 0;
+  void* ret = NULL;
+
+  if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ) {
+    desired_access = GENERIC_READ;
+    creation_disposition = OPEN_EXISTING;
+    share_mode = FILE_SHARE_READ;
+  } else if (mode & ZLIB_FILEFUNC_MODE_EXISTING) {
+    desired_access = GENERIC_WRITE | GENERIC_READ;
+    creation_disposition = OPEN_EXISTING;
+  } else if (mode & ZLIB_FILEFUNC_MODE_CREATE) {
+    desired_access = GENERIC_WRITE | GENERIC_READ;
+    creation_disposition = CREATE_ALWAYS;
+  }
+
+  if (filename != nullptr && desired_access != 0) {
+    file = CreateFileW(
+        base::UTF8ToWide(static_cast<const char*>(filename)).c_str(),
+        desired_access, share_mode, nullptr, creation_disposition,
+        flags_and_attributes, nullptr);
+  }
+
+  if (file == INVALID_HANDLE_VALUE)
+    file = NULL;
+
+  if (file != NULL) {
+    WIN32FILE_IOWIN file_ret;
+    file_ret.hf = file;
+    file_ret.error = 0;
+    ret = malloc(sizeof(WIN32FILE_IOWIN));
+    if (ret == NULL)
+      CloseHandle(file);
+    else
+      *(static_cast<WIN32FILE_IOWIN*>(ret)) = file_ret;
+  }
+  return ret;
+}
+#endif
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+// Callback function for zlib that opens a file stream from a file descriptor.
+// Since we do not own the file descriptor, dup it so that we can fdopen/fclose
+// a file stream.
+void* FdOpenFileFunc(void* opaque, const void* filename, int mode) {
+  FILE* file = NULL;
+  const char* mode_fopen = NULL;
+
+  if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) == ZLIB_FILEFUNC_MODE_READ)
+    mode_fopen = "rb";
+  else if (mode & ZLIB_FILEFUNC_MODE_EXISTING)
+    mode_fopen = "r+b";
+  else if (mode & ZLIB_FILEFUNC_MODE_CREATE)
+    mode_fopen = "wb";
+
+  if ((filename != NULL) && (mode_fopen != NULL)) {
+    int fd = dup(*static_cast<int*>(opaque));
+    if (fd != -1)
+      file = fdopen(fd, mode_fopen);
+  }
+
+  return file;
+}
+
+int FdCloseFileFunc(void* opaque, void* stream) {
+  fclose(static_cast<FILE*>(stream));
+  free(opaque);  // malloc'ed in FillFdOpenFileFunc()
+  return 0;
+}
+
+// Fills |pzlib_filecunc_def| appropriately to handle the zip file
+// referred to by |fd|.
+void FillFdOpenFileFunc(zlib_filefunc64_def* pzlib_filefunc_def, int fd) {
+  fill_fopen64_filefunc(pzlib_filefunc_def);
+  pzlib_filefunc_def->zopen64_file = FdOpenFileFunc;
+  pzlib_filefunc_def->zclose_file = FdCloseFileFunc;
+  int* ptr_fd = static_cast<int*>(malloc(sizeof(fd)));
+  *ptr_fd = fd;
+  pzlib_filefunc_def->opaque = ptr_fd;
+}
+#endif  // defined(OS_POSIX)
+
+#if defined(OS_WIN)
+// Callback function for zlib that opens a file stream from a Windows handle.
+// Does not take ownership of the handle.
+void* HandleOpenFileFunc(void* opaque, const void* /*filename*/, int mode) {
+  WIN32FILE_IOWIN file_ret;
+  file_ret.hf = static_cast<HANDLE>(opaque);
+  file_ret.error = 0;
+  if (file_ret.hf == INVALID_HANDLE_VALUE)
+    return NULL;
+
+  void* ret = malloc(sizeof(WIN32FILE_IOWIN));
+  if (ret != NULL)
+    *(static_cast<WIN32FILE_IOWIN*>(ret)) = file_ret;
+  return ret;
+}
+
+int HandleCloseFileFunc(void* opaque, void* stream) {
+  free(stream);  // malloc'ed in HandleOpenFileFunc()
+  return 0;
+}
+#endif
+
+// A struct that contains data required for zlib functions to extract files from
+// a zip archive stored in memory directly. The following I/O API functions
+// expect their opaque parameters refer to this struct.
+struct ZipBuffer {
+  const char* data;  // weak
+  ZPOS64_T length;
+  ZPOS64_T offset;
+};
+
+// Opens the specified file. When this function returns a non-NULL pointer, zlib
+// uses this pointer as a stream parameter while compressing or uncompressing
+// data. (Returning NULL represents an error.) This function initializes the
+// given opaque parameter and returns it because this parameter stores all
+// information needed for uncompressing data. (This function does not support
+// writing compressed data and it returns NULL for this case.)
+void* OpenZipBuffer(void* opaque, const void* /*filename*/, int mode) {
+  if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER) != ZLIB_FILEFUNC_MODE_READ) {
+    NOTREACHED();
+  }
+  ZipBuffer* buffer = static_cast<ZipBuffer*>(opaque);
+  if (!buffer || !buffer->data || !buffer->length)
+    return NULL;
+  buffer->offset = 0;
+  return opaque;
+}
+
+// Reads compressed data from the specified stream. This function copies data
+// refered by the opaque parameter and returns the size actually copied.
+uLong ReadZipBuffer(void* opaque, void* /*stream*/, void* buf, uLong size) {
+  ZipBuffer* buffer = static_cast<ZipBuffer*>(opaque);
+  DCHECK_LE(buffer->offset, buffer->length);
+  ZPOS64_T remaining_bytes = buffer->length - buffer->offset;
+  if (!buffer || !buffer->data || !remaining_bytes)
+    return 0;
+  if (size > remaining_bytes)
+    size = remaining_bytes;
+  memcpy(buf, &buffer->data[buffer->offset], size);
+  buffer->offset += size;
+  return size;
+}
+
+// Writes compressed data to the stream. This function always returns zero
+// because this implementation is only for reading compressed data.
+uLong WriteZipBuffer(void* /*opaque*/,
+                     void* /*stream*/,
+                     const void* /*buf*/,
+                     uLong /*size*/) {
+  NOTREACHED();
+}
+
+// Returns the offset from the beginning of the data.
+ZPOS64_T GetOffsetOfZipBuffer(void* opaque, void* /*stream*/) {
+  ZipBuffer* buffer = static_cast<ZipBuffer*>(opaque);
+  if (!buffer)
+    return -1;
+  return buffer->offset;
+}
+
+// Moves the current offset to the specified position.
+long SeekZipBuffer(void* opaque,
+                   void* /*stream*/,
+                   ZPOS64_T offset,
+                   int origin) {
+  ZipBuffer* buffer = static_cast<ZipBuffer*>(opaque);
+  if (!buffer)
+    return -1;
+  if (origin == ZLIB_FILEFUNC_SEEK_CUR) {
+    buffer->offset = std::min(buffer->offset + offset, buffer->length);
+    return 0;
+  }
+  if (origin == ZLIB_FILEFUNC_SEEK_END) {
+    buffer->offset = (buffer->length > offset) ? buffer->length - offset : 0;
+    return 0;
+  }
+  if (origin == ZLIB_FILEFUNC_SEEK_SET) {
+    buffer->offset = std::min(buffer->length, offset);
+    return 0;
+  }
+  NOTREACHED();
+}
+
+// Closes the input offset and deletes all resources used for compressing or
+// uncompressing data. This function deletes the ZipBuffer object referred by
+// the opaque parameter since zlib deletes the unzFile object and it does not
+// use this object any longer.
+int CloseZipBuffer(void* opaque, void* /*stream*/) {
+  if (opaque)
+    free(opaque);
+  return 0;
+}
+
+// Returns the last error happened when reading or writing data. This function
+// always returns zero, which means there are not any errors.
+int GetErrorOfZipBuffer(void* /*opaque*/, void* /*stream*/) {
+  return 0;
+}
+
+// Returns a zip_fileinfo struct with the time represented by |file_time|.
+zip_fileinfo TimeToZipFileInfo(const base::Time& file_time) {
+  base::Time::Exploded file_time_parts;
+  file_time.UTCExplode(&file_time_parts);
+
+  zip_fileinfo zip_info = {};
+  if (file_time_parts.year >= 1980) {
+    // This if check works around the handling of the year value in
+    // contrib/minizip/zip.c in function zip64local_TmzDateToDosDate
+    // It assumes that dates below 1980 are in the double digit format.
+    // Hence the fail safe option is to leave the date unset. Some programs
+    // might show the unset date as 1980-0-0 which is invalid.
+    zip_info.tmz_date.tm_year = file_time_parts.year;
+    zip_info.tmz_date.tm_mon = file_time_parts.month - 1;
+    zip_info.tmz_date.tm_mday = file_time_parts.day_of_month;
+    zip_info.tmz_date.tm_hour = file_time_parts.hour;
+    zip_info.tmz_date.tm_min = file_time_parts.minute;
+    zip_info.tmz_date.tm_sec = file_time_parts.second;
+  }
+
+  return zip_info;
+}
+}  // namespace
+
+namespace zip {
+namespace internal {
+
+unzFile OpenForUnzipping(const std::string& file_name_utf8) {
+  zlib_filefunc64_def* zip_func_ptrs = nullptr;
+#if defined(OS_WIN)
+  zlib_filefunc64_def zip_funcs;
+  fill_win32_filefunc64(&zip_funcs);
+  zip_funcs.zopen64_file = ZipOpenFunc;
+  zip_func_ptrs = &zip_funcs;
+#endif
+  return unzOpen2_64(file_name_utf8.c_str(), zip_func_ptrs);
+}
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+unzFile OpenFdForUnzipping(int zip_fd) {
+  zlib_filefunc64_def zip_funcs;
+  FillFdOpenFileFunc(&zip_funcs, zip_fd);
+  // Passing dummy "fd" filename to zlib.
+  return unzOpen2_64("fd", &zip_funcs);
+}
+#endif
+
+#if defined(OS_WIN)
+unzFile OpenHandleForUnzipping(HANDLE zip_handle) {
+  zlib_filefunc64_def zip_funcs;
+  fill_win32_filefunc64(&zip_funcs);
+  zip_funcs.zopen64_file = HandleOpenFileFunc;
+  zip_funcs.zclose_file = HandleCloseFileFunc;
+  zip_funcs.opaque = zip_handle;
+  return unzOpen2_64("fd", &zip_funcs);
+}
+#endif
+
+// static
+unzFile PrepareMemoryForUnzipping(const std::string& data) {
+  if (data.empty())
+    return NULL;
+
+  ZipBuffer* buffer = static_cast<ZipBuffer*>(malloc(sizeof(ZipBuffer)));
+  if (!buffer)
+    return NULL;
+  buffer->data = data.data();
+  buffer->length = data.length();
+  buffer->offset = 0;
+
+  zlib_filefunc64_def zip_functions;
+  zip_functions.zopen64_file = OpenZipBuffer;
+  zip_functions.zread_file = ReadZipBuffer;
+  zip_functions.zwrite_file = WriteZipBuffer;
+  zip_functions.ztell64_file = GetOffsetOfZipBuffer;
+  zip_functions.zseek64_file = SeekZipBuffer;
+  zip_functions.zclose_file = CloseZipBuffer;
+  zip_functions.zerror_file = GetErrorOfZipBuffer;
+  zip_functions.opaque = buffer;
+  return unzOpen2_64(nullptr, &zip_functions);
+}
+
+zipFile OpenForZipping(const std::string& file_name_utf8, int append_flag) {
+  zlib_filefunc64_def* zip_func_ptrs = nullptr;
+#if defined(OS_WIN)
+  zlib_filefunc64_def zip_funcs;
+  fill_win32_filefunc64(&zip_funcs);
+  zip_funcs.zopen64_file = ZipOpenFunc;
+  zip_func_ptrs = &zip_funcs;
+#endif
+  return zipOpen2_64(file_name_utf8.c_str(), append_flag, nullptr,
+                     zip_func_ptrs);
+}
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+zipFile OpenFdForZipping(int zip_fd, int append_flag) {
+  zlib_filefunc64_def zip_funcs;
+  FillFdOpenFileFunc(&zip_funcs, zip_fd);
+  // Passing dummy "fd" filename to zlib.
+  return zipOpen2_64("fd", append_flag, nullptr, &zip_funcs);
+}
+#endif
+
+bool ZipOpenNewFileInZip(zipFile zip_file,
+                         const std::string& str_path,
+                         base::Time last_modified_time,
+                         Compression compression) {
+  // Section 4.4.4 http://www.pkware.com/documents/casestudies/APPNOTE.TXT
+  // Setting the Language encoding flag so the file is told to be in utf-8.
+  const uLong LANGUAGE_ENCODING_FLAG = 0x1 << 11;
+
+  const zip_fileinfo file_info = TimeToZipFileInfo(last_modified_time);
+  const int err = zipOpenNewFileInZip4_64(
+      /*file=*/zip_file,
+      /*filename=*/str_path.c_str(),
+      /*zip_fileinfo=*/&file_info,
+      /*extrafield_local=*/nullptr,
+      /*size_extrafield_local=*/0u,
+      /*extrafield_global=*/nullptr,
+      /*size_extrafield_global=*/0u,
+      /*comment=*/nullptr,
+      /*method=*/compression,
+      /*level=*/Z_DEFAULT_COMPRESSION,
+      /*raw=*/0,
+      /*windowBits=*/-MAX_WBITS,
+      /*memLevel=*/DEF_MEM_LEVEL,
+      /*strategy=*/Z_DEFAULT_STRATEGY,
+      /*password=*/nullptr,
+      /*crcForCrypting=*/0,
+      /*versionMadeBy=*/0,
+      /*flagBase=*/LANGUAGE_ENCODING_FLAG,
+      /*zip64=*/1);
+
+  if (err != ZIP_OK) {
+    DLOG(ERROR) << "Cannot open ZIP file entry '" << str_path
+                << "': zipOpenNewFileInZip4_64 returned " << err;
+    return false;
+  }
+
+  return true;
+}
+
+Compression GetCompressionMethod(const base::FilePath& path) {
+  // Get the filename extension in lower case.
+  const base::FilePath::StringType ext =
+      base::ToLowerASCII(path.FinalExtension());
+
+  if (ext.empty())
+    return kDeflated;
+
+
+  // Skip the leading dot.
+  base::FilePath::StringViewType ext_without_dot = ext;
+  DCHECK_EQ(ext_without_dot.front(), FILE_PATH_LITERAL('.'));
+  ext_without_dot.remove_prefix(1);
+
+  // Well known filename extensions of files that a likely to be already
+  // compressed. The extensions are in lower case without the leading dot.
+  static constexpr auto kExts =
+      base::MakeFixedFlatSet<base::FilePath::StringViewType>({
+          FILE_PATH_LITERAL("3g2"),   //
+          FILE_PATH_LITERAL("3gp"),   //
+          FILE_PATH_LITERAL("7z"),    //
+          FILE_PATH_LITERAL("7zip"),  //
+          FILE_PATH_LITERAL("aac"),   //
+          FILE_PATH_LITERAL("avi"),   //
+          FILE_PATH_LITERAL("bz"),    //
+          FILE_PATH_LITERAL("bz2"),   //
+          FILE_PATH_LITERAL("crx"),   //
+          FILE_PATH_LITERAL("gif"),   //
+          FILE_PATH_LITERAL("gz"),    //
+          FILE_PATH_LITERAL("jar"),   //
+          FILE_PATH_LITERAL("jpeg"),  //
+          FILE_PATH_LITERAL("jpg"),   //
+          FILE_PATH_LITERAL("lz"),    //
+          FILE_PATH_LITERAL("m2v"),   //
+          FILE_PATH_LITERAL("m4p"),   //
+          FILE_PATH_LITERAL("m4v"),   //
+          FILE_PATH_LITERAL("mng"),   //
+          FILE_PATH_LITERAL("mov"),   //
+          FILE_PATH_LITERAL("mp2"),   //
+          FILE_PATH_LITERAL("mp3"),   //
+          FILE_PATH_LITERAL("mp4"),   //
+          FILE_PATH_LITERAL("mpe"),   //
+          FILE_PATH_LITERAL("mpeg"),  //
+          FILE_PATH_LITERAL("mpg"),   //
+          FILE_PATH_LITERAL("mpv"),   //
+          FILE_PATH_LITERAL("ogg"),   //
+          FILE_PATH_LITERAL("ogv"),   //
+          FILE_PATH_LITERAL("png"),   //
+          FILE_PATH_LITERAL("qt"),    //
+          FILE_PATH_LITERAL("rar"),   //
+          FILE_PATH_LITERAL("taz"),   //
+          FILE_PATH_LITERAL("tb2"),   //
+          FILE_PATH_LITERAL("tbz"),   //
+          FILE_PATH_LITERAL("tbz2"),  //
+          FILE_PATH_LITERAL("tgz"),   //
+          FILE_PATH_LITERAL("tlz"),   //
+          FILE_PATH_LITERAL("tz"),    //
+          FILE_PATH_LITERAL("tz2"),   //
+          FILE_PATH_LITERAL("vob"),   //
+          FILE_PATH_LITERAL("webm"),  //
+          FILE_PATH_LITERAL("wma"),   //
+          FILE_PATH_LITERAL("wmv"),   //
+          FILE_PATH_LITERAL("xz"),    //
+          FILE_PATH_LITERAL("z"),     //
+          FILE_PATH_LITERAL("zip"),   //
+      });
+
+  if (kExts.count(ext_without_dot)) {
+    return kStored;
+  }
+
+  return kDeflated;
+}
+
+}  // namespace internal
+}  // namespace zip

deps/v8/third_party/zlib/google/zip_internal.h

@@ -0,0 +1,88 @@
+// Copyright 2011 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_ZLIB_GOOGLE_ZIP_INTERNAL_H_
+#define THIRD_PARTY_ZLIB_GOOGLE_ZIP_INTERNAL_H_
+
+#include <string>
+
+#include "base/time/time.h"
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
+#if defined(USE_SYSTEM_MINIZIP)
+#include <minizip/unzip.h>
+#include <minizip/zip.h>
+#else
+#include "third_party/zlib/contrib/minizip/unzip.h"
+#include "third_party/zlib/contrib/minizip/zip.h"
+#endif
+
+namespace base {
+class FilePath;
+}
+
+// Utility functions and constants used internally for the zip file
+// library in the directory. Don't use them outside of the library.
+namespace zip {
+namespace internal {
+
+// Opens the given file name in UTF-8 for unzipping, with some setup for
+// Windows.
+unzFile OpenForUnzipping(const std::string& file_name_utf8);
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+// Opens the file referred to by |zip_fd| for unzipping.
+unzFile OpenFdForUnzipping(int zip_fd);
+#endif
+
+#if defined(OS_WIN)
+// Opens the file referred to by |zip_handle| for unzipping.
+unzFile OpenHandleForUnzipping(HANDLE zip_handle);
+#endif
+
+// Creates a custom unzFile object which reads data from the specified string.
+// This custom unzFile object overrides the I/O API functions of zlib so it can
+// read data from the specified string.
+unzFile PrepareMemoryForUnzipping(const std::string& data);
+
+// Opens the given file name in UTF-8 for zipping, with some setup for
+// Windows. |append_flag| will be passed to zipOpen2().
+zipFile OpenForZipping(const std::string& file_name_utf8, int append_flag);
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+// Opens the file referred to by |zip_fd| for zipping. |append_flag| will be
+// passed to zipOpen2().
+zipFile OpenFdForZipping(int zip_fd, int append_flag);
+#endif
+
+// Compression methods.
+enum Compression {
+  kStored = 0,             // Stored (no compression)
+  kDeflated = Z_DEFLATED,  // Deflated
+};
+
+// Adds a file (or directory) entry to the ZIP archive.
+bool ZipOpenNewFileInZip(zipFile zip_file,
+                         const std::string& str_path,
+                         base::Time last_modified_time,
+                         Compression compression);
+
+// Selects the best compression method for the given file. The heuristic is
+// based on the filename extension. By default, the compression method is
+// kDeflated. But if the given path has an extension indicating a well known
+// file format which is likely to be already compressed (eg ZIP, RAR, JPG,
+// PNG...) then the compression method is simply kStored.
+Compression GetCompressionMethod(const base::FilePath& path);
+
+const int kZipMaxPath = 256;
+const int kZipBufSize = 8192;
+
+}  // namespace internal
+}  // namespace zip
+
+#endif  // THIRD_PARTY_ZLIB_GOOGLE_ZIP_INTERNAL_H_

deps/v8/third_party/zlib/google/zip_reader.cc

@@ -0,0 +1,723 @@
+// Copyright 2012 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/zlib/google/zip_reader.h"
+
+#include <algorithm>
+#include <string_view>
+#include <utility>
+
+#include "base/check.h"
+#include "base/files/file.h"
+#include "base/files/file_util.h"
+#include "base/functional/bind.h"
+#include "base/i18n/icu_string_conversions.h"
+#include "base/logging.h"
+#include "base/numerics/safe_conversions.h"
+#include "base/strings/strcat.h"
+#include "base/strings/string_util.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/task/sequenced_task_runner.h"
+#include "build/build_config.h"
+#include "third_party/zlib/google/redact.h"
+#include "third_party/zlib/google/zip_internal.h"
+
+#if defined(USE_SYSTEM_MINIZIP)
+#include <minizip/unzip.h>
+#else
+#include "third_party/zlib/contrib/minizip/unzip.h"
+#if defined(OS_WIN)
+#include "third_party/zlib/contrib/minizip/iowin32.h"
+#endif  // defined(OS_WIN)
+#endif  // defined(USE_SYSTEM_MINIZIP)
+
+#if defined(OS_POSIX)
+#include <sys/stat.h>
+#endif
+
+namespace zip {
+namespace {
+
+enum UnzipError : int;
+
+std::ostream& operator<<(std::ostream& out, UnzipError error) {
+#define SWITCH_ERR(X) \
+  case X:             \
+    return out << #X;
+  switch (error) {
+    SWITCH_ERR(UNZ_OK);
+    SWITCH_ERR(UNZ_END_OF_LIST_OF_FILE);
+    SWITCH_ERR(UNZ_ERRNO);
+    SWITCH_ERR(UNZ_PARAMERROR);
+    SWITCH_ERR(UNZ_BADZIPFILE);
+    SWITCH_ERR(UNZ_INTERNALERROR);
+    SWITCH_ERR(UNZ_CRCERROR);
+    default:
+      return out << "UNZ" << static_cast<int>(error);
+  }
+#undef SWITCH_ERR
+}
+
+bool IsValidFileNameCharacterOnWindows(char16_t c) {
+  if (c < 32)
+    return false;
+
+  switch (c) {
+    case '<':   // Less than
+    case '>':   // Greater than
+    case ':':   // Colon
+    case '"':   // Double quote
+    case '|':   // Vertical bar or pipe
+    case '?':   // Question mark
+    case '*':   // Asterisk
+    case '/':   // Forward slash
+    case '\\':  // Backslash
+      return false;
+  }
+
+  return true;
+}
+
+// A writer delegate that writes to a given string.
+class StringWriterDelegate : public WriterDelegate {
+ public:
+  explicit StringWriterDelegate(std::string* output) : output_(output) {}
+
+  // WriterDelegate methods:
+  bool WriteBytes(const char* data, int num_bytes) override {
+    output_->append(data, num_bytes);
+    return true;
+  }
+
+ private:
+  std::string* const output_;
+};
+
+#if defined(OS_POSIX)
+void SetPosixFilePermissions(int fd, int mode) {
+  base::stat_wrapper_t sb;
+  if (base::File::Fstat(fd, &sb)) {
+    return;
+  }
+  mode_t new_mode = sb.st_mode;
+  // Transfer the executable bit only if the file is readable.
+  if ((sb.st_mode & S_IRUSR) == S_IRUSR && (mode & S_IXUSR) == S_IXUSR) {
+    new_mode |= S_IXUSR;
+  }
+  if ((sb.st_mode & S_IRGRP) == S_IRGRP && (mode & S_IXGRP) == S_IXGRP) {
+    new_mode |= S_IXGRP;
+  }
+  if ((sb.st_mode & S_IROTH) == S_IROTH && (mode & S_IXOTH) == S_IXOTH) {
+    new_mode |= S_IXOTH;
+  }
+  if (new_mode != sb.st_mode) {
+    fchmod(fd, new_mode);
+  }
+}
+#endif
+
+}  // namespace
+
+ZipReader::ZipReader() {
+  Reset();
+}
+
+ZipReader::~ZipReader() {
+  Close();
+}
+
+bool ZipReader::Open(const base::FilePath& zip_path) {
+  DCHECK(!zip_file_);
+
+  // Use of "Unsafe" function does not look good, but there is no way to do
+  // this safely on Linux. See file_util.h for details.
+  zip_file_ = internal::OpenForUnzipping(zip_path.AsUTF8Unsafe());
+  if (!zip_file_) {
+    LOG(ERROR) << "Cannot open ZIP archive " << Redact(zip_path);
+    return false;
+  }
+
+  return OpenInternal();
+}
+
+bool ZipReader::OpenFromPlatformFile(base::PlatformFile zip_fd) {
+  DCHECK(!zip_file_);
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+  zip_file_ = internal::OpenFdForUnzipping(zip_fd);
+#elif defined(OS_WIN)
+  zip_file_ = internal::OpenHandleForUnzipping(zip_fd);
+#endif
+  if (!zip_file_) {
+    LOG(ERROR) << "Cannot open ZIP from file handle " << zip_fd;
+    return false;
+  }
+
+  return OpenInternal();
+}
+
+bool ZipReader::OpenFromString(const std::string& data) {
+  zip_file_ = internal::PrepareMemoryForUnzipping(data);
+  if (!zip_file_)
+    return false;
+  return OpenInternal();
+}
+
+void ZipReader::Close() {
+  if (zip_file_) {
+    if (const UnzipError err{unzClose(zip_file_)}; err != UNZ_OK) {
+      LOG(ERROR) << "Error while closing ZIP archive: " << err;
+    }
+  }
+  Reset();
+}
+
+const ZipReader::Entry* ZipReader::Next() {
+  DCHECK(zip_file_);
+
+  if (reached_end_)
+    return nullptr;
+
+  DCHECK(ok_);
+
+  // Move to the next entry if we're not trying to open the first entry.
+  if (next_index_ > 0) {
+    if (const UnzipError err{unzGoToNextFile(zip_file_)}; err != UNZ_OK) {
+      reached_end_ = true;
+      if (err != UNZ_END_OF_LIST_OF_FILE) {
+        LOG(ERROR) << "Cannot go to next entry in ZIP: " << err;
+        ok_ = false;
+      }
+      return nullptr;
+    }
+  }
+
+  next_index_++;
+
+  if (!OpenEntry()) {
+    reached_end_ = true;
+    ok_ = false;
+    return nullptr;
+  }
+
+  return &entry_;
+}
+
+bool ZipReader::OpenEntry() {
+  DCHECK(zip_file_);
+
+  // Get entry info.
+  unz_file_info64 info = {};
+  char path_in_zip[internal::kZipMaxPath] = {};
+  if (const UnzipError err{unzGetCurrentFileInfo64(
+          zip_file_, &info, path_in_zip, sizeof(path_in_zip) - 1, nullptr, 0,
+          nullptr, 0)};
+      err != UNZ_OK) {
+    LOG(ERROR) << "Cannot get entry from ZIP: " << err;
+    return false;
+  }
+
+  entry_.path_in_original_encoding = path_in_zip;
+
+  // Convert path from original encoding to Unicode.
+  std::u16string path_in_utf16;
+  const char* const encoding = encoding_.empty() ? "UTF-8" : encoding_.c_str();
+  if (!base::CodepageToUTF16(entry_.path_in_original_encoding, encoding,
+                             base::OnStringConversionError::SUBSTITUTE,
+                             &path_in_utf16)) {
+    LOG(ERROR) << "Cannot convert path from encoding " << encoding;
+    return false;
+  }
+
+  // Normalize path.
+  Normalize(path_in_utf16);
+
+  entry_.original_size = info.uncompressed_size;
+
+  // The file content of this entry is encrypted if flag bit 0 is set.
+  entry_.is_encrypted = info.flag & 1;
+  if (entry_.is_encrypted) {
+    // Is the entry AES encrypted.
+    entry_.uses_aes_encryption = info.compression_method == 99;
+  } else {
+    entry_.uses_aes_encryption = false;
+  }
+
+  // Construct the last modified time. The timezone info is not present in ZIP
+  // archives, so we construct the time as UTC.
+  const base::Time::Exploded exploded_time = {
+      .year = static_cast<int>(info.tmu_date.tm_year),
+      .month =
+          static_cast<int>(info.tmu_date.tm_mon + 1),  // 0-based vs 1-based
+      .day_of_month = static_cast<int>(info.tmu_date.tm_mday),
+      .hour = static_cast<int>(info.tmu_date.tm_hour),
+      .minute = static_cast<int>(info.tmu_date.tm_min),
+      .second = static_cast<int>(info.tmu_date.tm_sec)};
+
+  if (!base::Time::FromUTCExploded(exploded_time, &entry_.last_modified))
+    entry_.last_modified = base::Time::UnixEpoch();
+
+#if defined(OS_POSIX)
+  entry_.posix_mode = (info.external_fa >> 16L) & (S_IRWXU | S_IRWXG | S_IRWXO);
+#else
+  entry_.posix_mode = 0;
+#endif
+
+  return true;
+}
+
+void ZipReader::Normalize(std::u16string_view in) {
+  entry_.is_unsafe = true;
+
+  // Directory entries in ZIP have a path ending with "/".
+  entry_.is_directory = base::EndsWith(in, u"/");
+
+  std::u16string normalized_path;
+  if (base::StartsWith(in, u"/")) {
+    normalized_path = u"ROOT";
+    entry_.is_unsafe = false;
+  }
+
+  for (;;) {
+    // Consume initial path separators.
+    const std::u16string_view::size_type i = in.find_first_not_of(u'/');
+    if (i == std::u16string_view::npos) {
+      break;
+    }
+
+    in.remove_prefix(i);
+    DCHECK(!in.empty());
+
+    // Isolate next path component.
+    const std::u16string_view part = in.substr(0, in.find_first_of(u'/'));
+    DCHECK(!part.empty());
+
+    in.remove_prefix(part.size());
+
+    if (!normalized_path.empty())
+      normalized_path += u'/';
+
+    if (part == u".") {
+      normalized_path += u"DOT";
+      entry_.is_unsafe = true;
+      continue;
+    }
+
+    if (part == u"..") {
+      normalized_path += u"UP";
+      entry_.is_unsafe = true;
+      continue;
+    }
+
+    // Windows has more restrictions than other systems when it comes to valid
+    // file paths. Replace Windows-invalid characters on all systems for
+    // consistency. In particular, this prevents a path component containing
+    // colon and backslash from being misinterpreted as an absolute path on
+    // Windows.
+    for (const char16_t c : part) {
+      normalized_path += IsValidFileNameCharacterOnWindows(c) ? c : 0xFFFD;
+    }
+
+    entry_.is_unsafe = false;
+  }
+
+  // If the entry is a directory, add the final path separator to the entry
+  // path.
+  if (entry_.is_directory && !normalized_path.empty()) {
+    normalized_path += u'/';
+    entry_.is_unsafe = false;
+  }
+
+  entry_.path = base::FilePath::FromUTF16Unsafe(normalized_path);
+
+  // By construction, we should always get a relative path.
+  DCHECK(!entry_.path.IsAbsolute()) << entry_.path;
+}
+
+void ZipReader::ReportProgress(ListenerCallback listener_callback,
+                               uint64_t bytes) const {
+  delta_bytes_read_ += bytes;
+
+  const base::TimeTicks now = base::TimeTicks::Now();
+  if (next_progress_report_time_ > now)
+    return;
+
+  next_progress_report_time_ = now + progress_period_;
+  listener_callback.Run(delta_bytes_read_);
+  delta_bytes_read_ = 0;
+}
+
+bool ZipReader::ExtractCurrentEntry(WriterDelegate* delegate,
+                                    ListenerCallback listener_callback,
+                                    uint64_t num_bytes_to_extract) const {
+  DCHECK(zip_file_);
+  DCHECK_LT(0, next_index_);
+  DCHECK(ok_);
+  DCHECK(!reached_end_);
+
+  // Use password only for encrypted files. For non-encrypted files, no password
+  // is needed, and must be nullptr.
+  const char* const password =
+      entry_.is_encrypted ? password_.c_str() : nullptr;
+  if (const UnzipError err{unzOpenCurrentFilePassword(zip_file_, password)};
+      err != UNZ_OK) {
+    LOG(ERROR) << "Cannot open file " << Redact(entry_.path)
+               << " from ZIP: " << err;
+    return false;
+  }
+
+  DCHECK(delegate);
+  if (!delegate->PrepareOutput())
+    return false;
+
+  uint64_t remaining_capacity = num_bytes_to_extract;
+  bool entire_file_extracted = false;
+
+  while (remaining_capacity > 0) {
+    char buf[internal::kZipBufSize];
+    const int num_bytes_read =
+        unzReadCurrentFile(zip_file_, buf, internal::kZipBufSize);
+
+    if (num_bytes_read == 0) {
+      entire_file_extracted = true;
+      break;
+    }
+
+    if (num_bytes_read < 0) {
+      LOG(ERROR) << "Cannot read file " << Redact(entry_.path)
+                 << " from ZIP: " << UnzipError(num_bytes_read);
+      break;
+    }
+
+    if (listener_callback) {
+      ReportProgress(listener_callback, num_bytes_read);
+    }
+
+    DCHECK_LT(0, num_bytes_read);
+    CHECK_LE(num_bytes_read, internal::kZipBufSize);
+
+    uint64_t num_bytes_to_write = std::min<uint64_t>(
+        remaining_capacity, base::checked_cast<uint64_t>(num_bytes_read));
+    if (!delegate->WriteBytes(buf, num_bytes_to_write))
+      break;
+
+    if (remaining_capacity == base::checked_cast<uint64_t>(num_bytes_read)) {
+      // Ensures function returns true if the entire file has been read.
+      const int n = unzReadCurrentFile(zip_file_, buf, 1);
+      entire_file_extracted = (n == 0);
+      LOG_IF(ERROR, n < 0) << "Cannot read file " << Redact(entry_.path)
+                           << " from ZIP: " << UnzipError(n);
+    }
+
+    CHECK_GE(remaining_capacity, num_bytes_to_write);
+    remaining_capacity -= num_bytes_to_write;
+  }
+
+  if (const UnzipError err{unzCloseCurrentFile(zip_file_)}; err != UNZ_OK) {
+    LOG(ERROR) << "Cannot extract file " << Redact(entry_.path)
+               << " from ZIP: " << err;
+    entire_file_extracted = false;
+  }
+
+  if (entire_file_extracted) {
+    delegate->SetPosixFilePermissions(entry_.posix_mode);
+    if (entry_.last_modified != base::Time::UnixEpoch()) {
+      delegate->SetTimeModified(entry_.last_modified);
+    }
+  } else {
+    delegate->OnError();
+  }
+
+  if (listener_callback) {
+    listener_callback.Run(delta_bytes_read_);
+    delta_bytes_read_ = 0;
+  }
+
+  return entire_file_extracted;
+}
+
+bool ZipReader::ExtractCurrentEntry(WriterDelegate* delegate,
+                                    uint64_t num_bytes_to_extract) const {
+  return ExtractCurrentEntry(delegate, ListenerCallback(),
+                             num_bytes_to_extract);
+}
+
+bool ZipReader::ExtractCurrentEntryWithListener(
+    WriterDelegate* delegate,
+    ListenerCallback listener_callback) const {
+  return ExtractCurrentEntry(delegate, listener_callback);
+}
+
+void ZipReader::ExtractCurrentEntryToFilePathAsync(
+    const base::FilePath& output_file_path,
+    SuccessCallback success_callback,
+    FailureCallback failure_callback,
+    ProgressCallback progress_callback) {
+  DCHECK(zip_file_);
+  DCHECK_LT(0, next_index_);
+  DCHECK(ok_);
+  DCHECK(!reached_end_);
+
+  // If this is a directory, just create it and return.
+  if (entry_.is_directory) {
+    if (base::CreateDirectory(output_file_path)) {
+      base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
+          FROM_HERE, std::move(success_callback));
+    } else {
+      LOG(ERROR) << "Cannot create directory " << Redact(output_file_path);
+      base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
+          FROM_HERE, std::move(failure_callback));
+    }
+    return;
+  }
+
+  // Use password only for encrypted files. For non-encrypted files, no password
+  // is needed, and must be nullptr.
+  const char* const password =
+      entry_.is_encrypted ? password_.c_str() : nullptr;
+  if (const UnzipError err{unzOpenCurrentFilePassword(zip_file_, password)};
+      err != UNZ_OK) {
+    LOG(ERROR) << "Cannot open file " << Redact(entry_.path)
+               << " from ZIP: " << err;
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
+        FROM_HERE, std::move(failure_callback));
+    return;
+  }
+
+  base::FilePath output_dir_path = output_file_path.DirName();
+  if (!base::CreateDirectory(output_dir_path)) {
+    LOG(ERROR) << "Cannot create directory " << Redact(output_dir_path);
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
+        FROM_HERE, std::move(failure_callback));
+    return;
+  }
+
+  const int flags = base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE;
+  base::File output_file(output_file_path, flags);
+
+  if (!output_file.IsValid()) {
+    LOG(ERROR) << "Cannot create file " << Redact(output_file_path);
+    base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
+        FROM_HERE, std::move(failure_callback));
+    return;
+  }
+
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
+      FROM_HERE,
+      base::BindOnce(&ZipReader::ExtractChunk, weak_ptr_factory_.GetWeakPtr(),
+                     std::move(output_file), std::move(success_callback),
+                     std::move(failure_callback), std::move(progress_callback),
+                     0 /* initial offset */));
+}
+
+bool ZipReader::ExtractCurrentEntryToString(uint64_t max_read_bytes,
+                                            std::string* output) const {
+  DCHECK(output);
+  DCHECK(zip_file_);
+  DCHECK_LT(0, next_index_);
+  DCHECK(ok_);
+  DCHECK(!reached_end_);
+
+  output->clear();
+
+  if (max_read_bytes == 0)
+    return true;
+
+  if (entry_.is_directory)
+    return true;
+
+  // The original_size is the best hint for the real size, so it saves doing
+  // reallocations for the common case when the uncompressed size is correct.
+  // However, we need to assume that the uncompressed size could be incorrect
+  // therefore this function needs to read as much data as possible.
+  output->reserve(base::checked_cast<size_t>(std::min<uint64_t>(
+      max_read_bytes, base::checked_cast<uint64_t>(entry_.original_size))));
+
+  StringWriterDelegate writer(output);
+  return ExtractCurrentEntry(&writer, max_read_bytes);
+}
+
+bool ZipReader::OpenInternal() {
+  DCHECK(zip_file_);
+
+  unz_global_info zip_info = {};  // Zero-clear.
+  if (const UnzipError err{unzGetGlobalInfo(zip_file_, &zip_info)};
+      err != UNZ_OK) {
+    LOG(ERROR) << "Cannot get ZIP info: " << err;
+    return false;
+  }
+
+  num_entries_ = zip_info.number_entry;
+  reached_end_ = (num_entries_ <= 0);
+  ok_ = true;
+  return true;
+}
+
+void ZipReader::Reset() {
+  zip_file_ = nullptr;
+  num_entries_ = 0;
+  next_index_ = 0;
+  reached_end_ = true;
+  ok_ = false;
+  delta_bytes_read_ = 0;
+  entry_ = {};
+}
+
+void ZipReader::ExtractChunk(base::File output_file,
+                             SuccessCallback success_callback,
+                             FailureCallback failure_callback,
+                             ProgressCallback progress_callback,
+                             int64_t offset) {
+  char buffer[internal::kZipBufSize];
+
+  const int num_bytes_read =
+      unzReadCurrentFile(zip_file_, buffer, internal::kZipBufSize);
+
+  if (num_bytes_read == 0) {
+    if (const UnzipError err{unzCloseCurrentFile(zip_file_)}; err != UNZ_OK) {
+      LOG(ERROR) << "Cannot extract file " << Redact(entry_.path)
+                 << " from ZIP: " << err;
+      std::move(failure_callback).Run();
+      return;
+    }
+
+    std::move(success_callback).Run();
+    return;
+  }
+
+  if (num_bytes_read < 0) {
+    LOG(ERROR) << "Cannot read file " << Redact(entry_.path)
+               << " from ZIP: " << UnzipError(num_bytes_read);
+    std::move(failure_callback).Run();
+    return;
+  }
+
+  if (num_bytes_read != output_file.Write(offset, buffer, num_bytes_read)) {
+    LOG(ERROR) << "Cannot write " << num_bytes_read
+               << " bytes to file at offset " << offset;
+    std::move(failure_callback).Run();
+    return;
+  }
+
+  offset += num_bytes_read;
+  progress_callback.Run(offset);
+
+  base::SequencedTaskRunner::GetCurrentDefault()->PostTask(
+      FROM_HERE,
+      base::BindOnce(&ZipReader::ExtractChunk, weak_ptr_factory_.GetWeakPtr(),
+                     std::move(output_file), std::move(success_callback),
+                     std::move(failure_callback), std::move(progress_callback),
+                     offset));
+}
+
+// FileWriterDelegate ----------------------------------------------------------
+
+FileWriterDelegate::FileWriterDelegate(base::File* file) : file_(file) {
+  DCHECK(file_);
+}
+
+FileWriterDelegate::FileWriterDelegate(base::File owned_file)
+    : owned_file_(std::move(owned_file)) {
+  DCHECK_EQ(file_, &owned_file_);
+}
+
+FileWriterDelegate::~FileWriterDelegate() {}
+
+bool FileWriterDelegate::PrepareOutput() {
+  DCHECK(file_);
+
+  if (!file_->IsValid()) {
+    LOG(ERROR) << "File is not valid";
+    return false;
+  }
+
+  const int64_t length = file_->GetLength();
+  if (length < 0) {
+    PLOG(ERROR) << "Cannot get length of file handle "
+                << file_->GetPlatformFile();
+    return false;
+  }
+
+  // Just log a warning if the file is not empty.
+  // See crbug.com/1309879 and crbug.com/774762.
+  LOG_IF(WARNING, length > 0)
+      << "File handle " << file_->GetPlatformFile()
+      << " is not empty: Its length is " << length << " bytes";
+
+  return true;
+}
+
+bool FileWriterDelegate::WriteBytes(const char* data, int num_bytes) {
+  int bytes_written = file_->WriteAtCurrentPos(data, num_bytes);
+  if (bytes_written > 0)
+    file_length_ += bytes_written;
+  return bytes_written == num_bytes;
+}
+
+void FileWriterDelegate::SetTimeModified(const base::Time& time) {
+  file_->SetTimes(base::Time::Now(), time);
+}
+
+void FileWriterDelegate::SetPosixFilePermissions(int mode) {
+#if defined(OS_POSIX)
+  zip::SetPosixFilePermissions(file_->GetPlatformFile(), mode);
+#endif
+}
+
+void FileWriterDelegate::OnError() {
+  file_length_ = 0;
+  file_->SetLength(0);
+}
+
+// FilePathWriterDelegate ------------------------------------------------------
+
+FilePathWriterDelegate::FilePathWriterDelegate(base::FilePath output_file_path)
+    : FileWriterDelegate(base::File()),
+      output_file_path_(std::move(output_file_path)) {}
+
+FilePathWriterDelegate::~FilePathWriterDelegate() {}
+
+bool FilePathWriterDelegate::PrepareOutput() {
+  // We can't rely on parent directory entries being specified in the
+  // zip, so we make sure they are created.
+  if (const base::FilePath dir = output_file_path_.DirName();
+      !base::CreateDirectory(dir)) {
+    PLOG(ERROR) << "Cannot create directory " << Redact(dir);
+    return false;
+  }
+
+  owned_file_.Initialize(output_file_path_,
+                         base::File::FLAG_CREATE | base::File::FLAG_WRITE);
+  if (!owned_file_.IsValid()) {
+    PLOG(ERROR) << "Cannot create file " << Redact(output_file_path_) << ": "
+                << base::File::ErrorToString(owned_file_.error_details());
+    return false;
+  }
+
+  const int64_t length = owned_file_.GetLength();
+  if (length < 0) {
+    PLOG(ERROR) << "Cannot get length of file " << Redact(output_file_path_);
+    return false;
+  }
+
+  if (length > 0) {
+    LOG(ERROR) << "File " << Redact(output_file_path_)
+               << " is not empty: Its length is " << length << " bytes";
+    return false;
+  }
+
+  return true;
+}
+
+void FilePathWriterDelegate::OnError() {
+  FileWriterDelegate::OnError();
+  owned_file_.Close();
+
+  if (!base::DeleteFile(output_file_path_)) {
+    LOG(ERROR) << "Cannot delete partially extracted file "
+               << Redact(output_file_path_);
+  }
+}
+
+}  // namespace zip

deps/v8/third_party/zlib/google/zip_reader.h

@@ -0,0 +1,405 @@
+// Copyright 2011 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+#ifndef THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_
+#define THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include <limits>
+#include <memory>
+#include <string>
+#include <string_view>
+
+#include "base/files/file.h"
+#include "base/files/file_path.h"
+#include "base/functional/callback.h"
+#include "base/memory/weak_ptr.h"
+#include "base/numerics/safe_conversions.h"
+#include "base/time/time.h"
+
+#if defined(USE_SYSTEM_MINIZIP)
+#include <minizip/unzip.h>
+#else
+#include "third_party/zlib/contrib/minizip/unzip.h"
+#endif
+
+namespace zip {
+
+// A delegate interface used to stream out an entry; see
+// ZipReader::ExtractCurrentEntry.
+class WriterDelegate {
+ public:
+  virtual ~WriterDelegate() {}
+
+  // Invoked once before any data is streamed out to pave the way (e.g., to open
+  // the output file). Return false on failure to cancel extraction.
+  virtual bool PrepareOutput() { return true; }
+
+  // Invoked to write the next chunk of data. Return false on failure to cancel
+  // extraction.
+  virtual bool WriteBytes(const char* data, int num_bytes) { return true; }
+
+  // Sets the last-modified time of the data.
+  virtual void SetTimeModified(const base::Time& time) {}
+
+  // Called with the POSIX file permissions of the data; POSIX implementations
+  // may apply some of the permissions (for example, the executable bit) to the
+  // output file.
+  virtual void SetPosixFilePermissions(int mode) {}
+
+  // Called if an error occurred while extracting the file. The WriterDelegate
+  // can then remove and clean up the partially extracted data.
+  virtual void OnError() {}
+};
+
+// This class is used for reading ZIP archives. A typical use case of this class
+// is to scan entries in a ZIP archive and extract them. The code will look
+// like:
+//
+//   ZipReader reader;
+//   if (!reader.Open(zip_path)) {
+//     // Cannot open
+//     return;
+//   }
+//
+//   while (const ZipReader::entry* entry = reader.Next()) {
+//     auto writer = CreateFilePathWriterDelegate(extract_dir, entry->path);
+//     if (!reader.ExtractCurrentEntry(writer)) {
+//           // Cannot extract
+//           return;
+//     }
+//   }
+//
+//   if (!reader.ok()) {
+//     // Error while enumerating entries
+//     return;
+//   }
+//
+class ZipReader {
+ public:
+  // A callback that is called when the operation is successful.
+  using SuccessCallback = base::OnceClosure;
+  // A callback that is called when the operation fails.
+  using FailureCallback = base::OnceClosure;
+  // A callback that is called periodically during the operation with the number
+  // of bytes that have been processed so far.
+  using ProgressCallback = base::RepeatingCallback<void(int64_t)>;
+  // A callback that is called periodically during the operation with the number
+  // of bytes that have been processed since the previous call (i.e. delta).
+  using ListenerCallback = base::RepeatingCallback<void(uint64_t)>;
+
+  // Information of an entry (file or directory) in a ZIP archive.
+  struct Entry {
+    // Path of this entry, in its original encoding as it is stored in the ZIP
+    // archive. The encoding is not specified here. It might or might not be
+    // UTF-8, and the caller needs to use other means to determine the encoding
+    // if it wants to interpret this path correctly.
+    std::string path_in_original_encoding;
+
+    // Path of the entry, converted to Unicode. This path is relative (eg
+    // "foo/bar.txt"). Absolute paths (eg "/foo/bar.txt") or paths containing
+    // ".." or "." components (eg "../foo/bar.txt") are converted to safe
+    // relative paths. Eg:
+    // (In ZIP) -> (Entry.path)
+    // /foo/bar -> ROOT/foo/bar
+    // ../a     -> UP/a
+    // ./a      -> DOT/a
+    base::FilePath path;
+
+    // Size of the original uncompressed file, or 0 if the entry is a directory.
+    // This value should not be trusted, because it is stored as metadata in the
+    // ZIP archive and can be different from the real uncompressed size.
+    int64_t original_size;
+
+    // Last modified time. If the timestamp stored in the ZIP archive is not
+    // valid, the Unix epoch will be returned.
+    //
+    // The timestamp stored in the ZIP archive uses the MS-DOS date and time
+    // format.
+    //
+    // http://msdn.microsoft.com/en-us/library/ms724247(v=vs.85).aspx
+    //
+    // As such the following limitations apply:
+    // * Only years from 1980 to 2107 can be represented.
+    // * The timestamp has a 2-second resolution.
+    // * There is no timezone information, so the time is interpreted as UTC.
+    base::Time last_modified;
+
+    // True if the entry is a directory.
+    // False if the entry is a file.
+    bool is_directory = false;
+
+    // True if the entry path cannot be converted to a safe relative path. This
+    // happens if a file entry (not a directory) has a filename "." or "..".
+    bool is_unsafe = false;
+
+    // True if the file content is encrypted.
+    bool is_encrypted = false;
+
+    // True if the encryption scheme is AES.
+    bool uses_aes_encryption = false;
+
+    // Entry POSIX permissions (POSIX systems only).
+    int posix_mode;
+  };
+
+  ZipReader();
+
+  ZipReader(const ZipReader&) = delete;
+  ZipReader& operator=(const ZipReader&) = delete;
+
+  ~ZipReader();
+
+  // Opens the ZIP archive specified by |zip_path|. Returns true on
+  // success.
+  bool Open(const base::FilePath& zip_path);
+
+  // Opens the ZIP archive referred to by the platform file |zip_fd|, without
+  // taking ownership of |zip_fd|. Returns true on success.
+  bool OpenFromPlatformFile(base::PlatformFile zip_fd);
+
+  // Opens the zip data stored in |data|. This class uses a weak reference to
+  // the given sring while extracting files, i.e. the caller should keep the
+  // string until it finishes extracting files.
+  bool OpenFromString(const std::string& data);
+
+  // Closes the currently opened ZIP archive. This function is called in the
+  // destructor of the class, so you usually don't need to call this.
+  void Close();
+
+  // Sets the encoding of entry paths in the ZIP archive.
+  // By default, paths are assumed to be in UTF-8.
+  void SetEncoding(std::string encoding) { encoding_ = std::move(encoding); }
+
+  // Sets the decryption password that will be used to decrypt encrypted file in
+  // the ZIP archive.
+  void SetPassword(std::string password) { password_ = std::move(password); }
+
+  // Gets the next entry. Returns null if there is no more entry, or if an error
+  // occurred while scanning entries. The returned Entry is owned by this
+  // ZipReader, and is valid until Next() is called again or until this
+  // ZipReader is closed.
+  //
+  // This function should be called before operations over the current entry
+  // like ExtractCurrentEntryToFile().
+  //
+  // while (const ZipReader::Entry* entry = reader.Next()) {
+  //   // Do something with the current entry here.
+  //   ...
+  // }
+  //
+  // // Finished scanning entries.
+  // // Check if the scanning stopped because of an error.
+  // if (!reader.ok()) {
+  //   // There was an error.
+  //   ...
+  // }
+  const Entry* Next();
+
+  // Returns true if the enumeration of entries was successful, or false if it
+  // stopped because of an error.
+  bool ok() const { return ok_; }
+
+  // Extracts |num_bytes_to_extract| bytes of the current entry to |delegate|,
+  // starting from the beginning of the entry.
+  //
+  // Returns true if the entire file was extracted without error.
+  //
+  // Precondition: Next() returned a non-null Entry.
+  bool ExtractCurrentEntry(WriterDelegate* delegate,
+                           uint64_t num_bytes_to_extract =
+                               std::numeric_limits<uint64_t>::max()) const;
+
+  // Extracts the current entry to |delegate|, starting from the beginning
+  // of the entry, calling |listener_callback| regularly with the number of
+  // bytes extracted.
+  //
+  // Returns true if the entire file was extracted without error.
+  //
+  // Precondition: Next() returned a non-null Entry.
+  bool ExtractCurrentEntryWithListener(
+      WriterDelegate* delegate,
+      ListenerCallback listener_callback) const;
+
+  // Asynchronously extracts the current entry to the given output file path. If
+  // the current entry is a directory it just creates the directory
+  // synchronously instead.
+  //
+  // |success_callback| will be called on success and |failure_callback| will be
+  // called on failure. |progress_callback| will be called at least once.
+  // Callbacks will be posted to the current MessageLoop in-order.
+  //
+  // Precondition: Next() returned a non-null Entry.
+  void ExtractCurrentEntryToFilePathAsync(
+      const base::FilePath& output_file_path,
+      SuccessCallback success_callback,
+      FailureCallback failure_callback,
+      ProgressCallback progress_callback);
+
+  // Extracts the current entry into memory. If the current entry is a
+  // directory, |*output| is set to the empty string. If the current entry is a
+  // file, |*output| is filled with its contents.
+  //
+  // The value in |Entry::original_size| cannot be trusted, so the real size of
+  // the uncompressed contents can be different. |max_read_bytes| limits the
+  // amount of memory used to carry the entry.
+  //
+  // Returns true if the entire content is read without error. If the content is
+  // bigger than |max_read_bytes|, this function returns false and |*output| is
+  // filled with |max_read_bytes| of data. If an error occurs, this function
+  // returns false and |*output| contains the content extracted so far, which
+  // might be garbage data.
+  //
+  // Precondition: Next() returned a non-null Entry.
+  bool ExtractCurrentEntryToString(uint64_t max_read_bytes,
+                                   std::string* output) const;
+
+  bool ExtractCurrentEntryToString(std::string* output) const {
+    return ExtractCurrentEntryToString(
+        base::checked_cast<uint64_t>(output->max_size()), output);
+  }
+
+  // Returns the number of entries in the ZIP archive.
+  //
+  // Precondition: one of the Open() methods returned true.
+  int num_entries() const { return num_entries_; }
+
+ private:
+  // Common code used both in Open and OpenFromFd.
+  bool OpenInternal();
+
+  // Resets the internal state.
+  void Reset();
+
+  // Opens the current entry in the ZIP archive. On success, returns true and
+  // updates the current entry state |entry_|.
+  //
+  // Note that there is no matching CloseEntry(). The current entry state is
+  // reset automatically as needed.
+  bool OpenEntry();
+
+  // Normalizes the given path passed as UTF-16 string piece. Sets entry_.path,
+  // entry_.is_directory and entry_.is_unsafe.
+  void Normalize(std::u16string_view in);
+
+  // Runs the ListenerCallback at a throttled rate.
+  void ReportProgress(ListenerCallback listener_callback, uint64_t bytes) const;
+
+  // Extracts |num_bytes_to_extract| bytes of the current entry to |delegate|,
+  // starting from the beginning of the entry calling |listener_callback| if
+  // its supplied.
+  //
+  // Returns true if the entire file was extracted without error.
+  //
+  // Precondition: Next() returned a non-null Entry.
+  bool ExtractCurrentEntry(WriterDelegate* delegate,
+                           ListenerCallback listener_callback,
+                           uint64_t num_bytes_to_extract =
+                               std::numeric_limits<uint64_t>::max()) const;
+
+  // Extracts a chunk of the file to the target.  Will post a task for the next
+  // chunk and success/failure/progress callbacks as necessary.
+  void ExtractChunk(base::File target_file,
+                    SuccessCallback success_callback,
+                    FailureCallback failure_callback,
+                    ProgressCallback progress_callback,
+                    const int64_t offset);
+
+  std::string encoding_;
+  std::string password_;
+  unzFile zip_file_;
+  int num_entries_;
+  int next_index_;
+  bool reached_end_;
+  bool ok_;
+  Entry entry_;
+
+  // Next time to report progress.
+  mutable base::TimeTicks next_progress_report_time_ = base::TimeTicks::Now();
+
+  // Progress time delta.
+  // TODO(crbug.com/953256) Add this as parameter to the unzip options.
+  base::TimeDelta progress_period_ = base::Milliseconds(1000);
+
+  // Number of bytes read since last progress report callback executed.
+  mutable uint64_t delta_bytes_read_ = 0;
+
+  base::WeakPtrFactory<ZipReader> weak_ptr_factory_{this};
+};
+
+// A writer delegate that writes to a given File. It is recommended that this
+// file be initially empty.
+class FileWriterDelegate : public WriterDelegate {
+ public:
+  // Constructs a FileWriterDelegate that manipulates |file|. The delegate will
+  // not own |file|, therefore the caller must guarantee |file| will outlive the
+  // delegate.
+  explicit FileWriterDelegate(base::File* file);
+
+  // Constructs a FileWriterDelegate that takes ownership of |file|.
+  explicit FileWriterDelegate(base::File owned_file);
+
+  FileWriterDelegate(const FileWriterDelegate&) = delete;
+  FileWriterDelegate& operator=(const FileWriterDelegate&) = delete;
+
+  ~FileWriterDelegate() override;
+
+  // Returns true if the file handle passed to the constructor is valid.
+  bool PrepareOutput() override;
+
+  // Writes |num_bytes| bytes of |data| to the file, returning false on error or
+  // if not all bytes could be written.
+  bool WriteBytes(const char* data, int num_bytes) override;
+
+  // Sets the last-modified time of the data.
+  void SetTimeModified(const base::Time& time) override;
+
+  // On POSIX systems, sets the file to be executable if the source file was
+  // executable.
+  void SetPosixFilePermissions(int mode) override;
+
+  // Empties the file to avoid leaving garbage data in it.
+  void OnError() override;
+
+  // Gets the number of bytes written into the file.
+  int64_t file_length() { return file_length_; }
+
+ protected:
+  // The delegate can optionally own the file it modifies, in which case
+  // owned_file_ is set and file_ is an alias for owned_file_.
+  base::File owned_file_;
+
+  // The file the delegate modifies.
+  base::File* const file_ = &owned_file_;
+
+  int64_t file_length_ = 0;
+};
+
+// A writer delegate that creates and writes a file at a given path. This does
+// not overwrite any existing file.
+class FilePathWriterDelegate : public FileWriterDelegate {
+ public:
+  explicit FilePathWriterDelegate(base::FilePath output_file_path);
+
+  FilePathWriterDelegate(const FilePathWriterDelegate&) = delete;
+  FilePathWriterDelegate& operator=(const FilePathWriterDelegate&) = delete;
+
+  ~FilePathWriterDelegate() override;
+
+  // Creates the output file and any necessary intermediate directories. Does
+  // not overwrite any existing file, and returns false if the output file
+  // cannot be created because another file conflicts with it.
+  bool PrepareOutput() override;
+
+  // Deletes the output file.
+  void OnError() override;
+
+ private:
+  const base::FilePath output_file_path_;
+};
+
+}  // namespace zip
+
+#endif  // THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_

deps/v8/third_party/zlib/google/zip_reader_unittest.cc

@@ -0,0 +1,936 @@
+// Copyright 2011 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/zlib/google/zip_reader.h"
+
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <iterator>
+#include <optional>
+#include <string>
+#include <string_view>
+#include <vector>
+
+#include "base/check.h"
+#include "base/files/file.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util.h"
+#include "base/files/scoped_temp_dir.h"
+#include "base/functional/bind.h"
+#include "base/hash/md5.h"
+#include "base/i18n/time_formatting.h"
+#include "base/path_service.h"
+#include "base/run_loop.h"
+#include "base/strings/stringprintf.h"
+#include "base/strings/utf_string_conversions.h"
+#include "base/test/bind.h"
+#include "base/test/task_environment.h"
+#include "base/time/time.h"
+#include "build/build_config.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+#include "third_party/icu/source/i18n/unicode/timezone.h"
+#include "third_party/zlib/google/zip_internal.h"
+
+using ::testing::_;
+using ::testing::ElementsAre;
+using ::testing::ElementsAreArray;
+using ::testing::Return;
+using ::testing::SizeIs;
+
+namespace {
+
+const static std::string kQuuxExpectedMD5 = "d1ae4ac8a17a0e09317113ab284b57a6";
+
+class FileWrapper {
+ public:
+  typedef enum { READ_ONLY, READ_WRITE } AccessMode;
+
+  FileWrapper(const base::FilePath& path, AccessMode mode) {
+    int flags = base::File::FLAG_READ;
+    if (mode == READ_ONLY)
+      flags |= base::File::FLAG_OPEN;
+    else
+      flags |= base::File::FLAG_WRITE | base::File::FLAG_CREATE_ALWAYS;
+
+    file_.Initialize(path, flags);
+  }
+
+  ~FileWrapper() {}
+
+  base::PlatformFile platform_file() { return file_.GetPlatformFile(); }
+
+  base::File* file() { return &file_; }
+
+ private:
+  base::File file_;
+};
+
+// A mock that provides methods that can be used as callbacks in asynchronous
+// unzip functions.  Tracks the number of calls and number of bytes reported.
+// Assumes that progress callbacks will be executed in-order.
+class MockUnzipListener final {
+ public:
+  MockUnzipListener()
+      : success_calls_(0),
+        failure_calls_(0),
+        progress_calls_(0),
+        current_progress_(0) {}
+
+  // Success callback for async functions.
+  void OnUnzipSuccess() { success_calls_++; }
+
+  // Failure callback for async functions.
+  void OnUnzipFailure() { failure_calls_++; }
+
+  // Progress callback for async functions.
+  void OnUnzipProgress(int64_t progress) {
+    DCHECK(progress > current_progress_);
+    progress_calls_++;
+    current_progress_ = progress;
+  }
+
+  int success_calls() { return success_calls_; }
+  int failure_calls() { return failure_calls_; }
+  int progress_calls() { return progress_calls_; }
+  int current_progress() { return current_progress_; }
+
+  base::WeakPtr<MockUnzipListener> AsWeakPtr() {
+    return weak_ptr_factory_.GetWeakPtr();
+  }
+
+ private:
+  int success_calls_;
+  int failure_calls_;
+  int progress_calls_;
+
+  int64_t current_progress_;
+
+  base::WeakPtrFactory<MockUnzipListener> weak_ptr_factory_{this};
+};
+
+class MockWriterDelegate : public zip::WriterDelegate {
+ public:
+  MOCK_METHOD0(PrepareOutput, bool());
+  MOCK_METHOD2(WriteBytes, bool(const char*, int));
+  MOCK_METHOD1(SetTimeModified, void(const base::Time&));
+  MOCK_METHOD1(SetPosixFilePermissions, void(int));
+  MOCK_METHOD0(OnError, void());
+};
+
+bool ExtractCurrentEntryToFilePath(zip::ZipReader* reader,
+                                   base::FilePath path) {
+  zip::FilePathWriterDelegate writer(path);
+  return reader->ExtractCurrentEntry(&writer);
+}
+
+const zip::ZipReader::Entry* LocateAndOpenEntry(
+    zip::ZipReader* const reader,
+    const base::FilePath& path_in_zip) {
+  DCHECK(reader);
+  EXPECT_TRUE(reader->ok());
+
+  // The underlying library can do O(1) access, but ZipReader does not expose
+  // that. O(N) access is acceptable for these tests.
+  while (const zip::ZipReader::Entry* const entry = reader->Next()) {
+    EXPECT_TRUE(reader->ok());
+    if (entry->path == path_in_zip)
+      return entry;
+  }
+
+  EXPECT_TRUE(reader->ok());
+  return nullptr;
+}
+
+using Paths = std::vector<base::FilePath>;
+
+}  // namespace
+
+namespace zip {
+
+// Make the test a PlatformTest to setup autorelease pools properly on Mac.
+class ZipReaderTest : public PlatformTest {
+ protected:
+  void SetUp() override {
+    PlatformTest::SetUp();
+
+    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
+    test_dir_ = temp_dir_.GetPath();
+  }
+
+  static base::FilePath GetTestDataDirectory() {
+    base::FilePath path;
+    CHECK(base::PathService::Get(base::DIR_SRC_TEST_DATA_ROOT, &path));
+    return path.AppendASCII("third_party")
+        .AppendASCII("zlib")
+        .AppendASCII("google")
+        .AppendASCII("test")
+        .AppendASCII("data");
+  }
+
+  static Paths GetPaths(const base::FilePath& zip_path,
+                        std::string_view encoding = {}) {
+    Paths paths;
+
+    if (ZipReader reader; reader.Open(zip_path)) {
+      if (!encoding.empty())
+        reader.SetEncoding(std::string(encoding));
+
+      while (const ZipReader::Entry* const entry = reader.Next()) {
+        EXPECT_TRUE(reader.ok());
+        paths.push_back(entry->path);
+      }
+
+      EXPECT_TRUE(reader.ok());
+    }
+
+    return paths;
+  }
+
+  // The path to temporary directory used to contain the test operations.
+  base::FilePath test_dir_;
+  // The path to the test data directory where test.zip etc. are located.
+  const base::FilePath data_dir_ = GetTestDataDirectory();
+  // The path to test.zip in the test data directory.
+  const base::FilePath test_zip_file_ = data_dir_.AppendASCII("test.zip");
+  const Paths test_zip_contents_ = {
+      base::FilePath(FILE_PATH_LITERAL("foo/")),
+      base::FilePath(FILE_PATH_LITERAL("foo/bar/")),
+      base::FilePath(FILE_PATH_LITERAL("foo/bar/baz.txt")),
+      base::FilePath(FILE_PATH_LITERAL("foo/bar/quux.txt")),
+      base::FilePath(FILE_PATH_LITERAL("foo/bar.txt")),
+      base::FilePath(FILE_PATH_LITERAL("foo.txt")),
+      base::FilePath(FILE_PATH_LITERAL("foo/bar/.hidden")),
+  };
+  base::ScopedTempDir temp_dir_;
+  base::test::TaskEnvironment task_environment_;
+};
+
+TEST_F(ZipReaderTest, Open_ValidZipFile) {
+  ZipReader reader;
+  EXPECT_TRUE(reader.Open(test_zip_file_));
+  EXPECT_TRUE(reader.ok());
+}
+
+TEST_F(ZipReaderTest, Open_ValidZipPlatformFile) {
+  ZipReader reader;
+  EXPECT_FALSE(reader.ok());
+  FileWrapper zip_fd_wrapper(test_zip_file_, FileWrapper::READ_ONLY);
+  EXPECT_TRUE(reader.OpenFromPlatformFile(zip_fd_wrapper.platform_file()));
+  EXPECT_TRUE(reader.ok());
+}
+
+TEST_F(ZipReaderTest, Open_NonExistentFile) {
+  ZipReader reader;
+  EXPECT_FALSE(reader.ok());
+  EXPECT_FALSE(reader.Open(data_dir_.AppendASCII("nonexistent.zip")));
+  EXPECT_FALSE(reader.ok());
+}
+
+TEST_F(ZipReaderTest, Open_ExistentButNonZipFile) {
+  ZipReader reader;
+  EXPECT_FALSE(reader.ok());
+  EXPECT_FALSE(reader.Open(data_dir_.AppendASCII("create_test_zip.sh")));
+  EXPECT_FALSE(reader.ok());
+}
+
+TEST_F(ZipReaderTest, Open_EmptyFile) {
+  ZipReader reader;
+  EXPECT_FALSE(reader.ok());
+  EXPECT_TRUE(reader.Open(data_dir_.AppendASCII("empty.zip")));
+  EXPECT_TRUE(reader.ok());
+  EXPECT_EQ(0, reader.num_entries());
+  EXPECT_EQ(nullptr, reader.Next());
+}
+
+// Iterate through the contents in the test ZIP archive, and compare that the
+// contents collected from the ZipReader matches the expected contents.
+TEST_F(ZipReaderTest, Iteration) {
+  Paths actual_contents;
+  ZipReader reader;
+  EXPECT_FALSE(reader.ok());
+  EXPECT_TRUE(reader.Open(test_zip_file_));
+  EXPECT_TRUE(reader.ok());
+  while (const ZipReader::Entry* const entry = reader.Next()) {
+    EXPECT_TRUE(reader.ok());
+    actual_contents.push_back(entry->path);
+  }
+
+  EXPECT_TRUE(reader.ok());
+  EXPECT_FALSE(reader.Next());  // Shouldn't go further.
+  EXPECT_TRUE(reader.ok());
+
+  EXPECT_THAT(actual_contents, SizeIs(reader.num_entries()));
+  EXPECT_THAT(actual_contents, ElementsAreArray(test_zip_contents_));
+}
+
+// Open the test ZIP archive from a file descriptor, iterate through its
+// contents, and compare that they match the expected contents.
+TEST_F(ZipReaderTest, PlatformFileIteration) {
+  Paths actual_contents;
+  ZipReader reader;
+  FileWrapper zip_fd_wrapper(test_zip_file_, FileWrapper::READ_ONLY);
+  EXPECT_TRUE(reader.OpenFromPlatformFile(zip_fd_wrapper.platform_file()));
+  EXPECT_TRUE(reader.ok());
+  while (const ZipReader::Entry* const entry = reader.Next()) {
+    EXPECT_TRUE(reader.ok());
+    actual_contents.push_back(entry->path);
+  }
+
+  EXPECT_TRUE(reader.ok());
+  EXPECT_FALSE(reader.Next());  // Shouldn't go further.
+  EXPECT_TRUE(reader.ok());
+
+  EXPECT_THAT(actual_contents, SizeIs(reader.num_entries()));
+  EXPECT_THAT(actual_contents, ElementsAreArray(test_zip_contents_));
+}
+
+TEST_F(ZipReaderTest, RegularFile) {
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(test_zip_file_));
+  base::FilePath target_path(FILE_PATH_LITERAL("foo/bar/quux.txt"));
+
+  const ZipReader::Entry* entry = LocateAndOpenEntry(&reader, target_path);
+  ASSERT_TRUE(entry);
+
+  EXPECT_EQ(target_path, entry->path);
+  EXPECT_EQ(13527, entry->original_size);
+  EXPECT_EQ("2009-05-29 06:22:20.000",
+            base::UnlocalizedTimeFormatWithPattern(entry->last_modified,
+                                                   "y-MM-dd HH:mm:ss.SSS",
+                                                   icu::TimeZone::getGMT()));
+  EXPECT_FALSE(entry->is_unsafe);
+  EXPECT_FALSE(entry->is_directory);
+}
+
+TEST_F(ZipReaderTest, DotDotFile) {
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("evil.zip")));
+  base::FilePath target_path(FILE_PATH_LITERAL(
+      "UP/levilevilevilevilevilevilevilevilevilevilevilevil"));
+  const ZipReader::Entry* entry = LocateAndOpenEntry(&reader, target_path);
+  ASSERT_TRUE(entry);
+  EXPECT_EQ(target_path, entry->path);
+  EXPECT_FALSE(entry->is_unsafe);
+  EXPECT_FALSE(entry->is_directory);
+}
+
+TEST_F(ZipReaderTest, InvalidUTF8File) {
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("evil_via_invalid_utf8.zip")));
+  base::FilePath target_path = base::FilePath::FromUTF8Unsafe(".<2E>.<2E>evil.txt");
+  const ZipReader::Entry* entry = LocateAndOpenEntry(&reader, target_path);
+  ASSERT_TRUE(entry);
+  EXPECT_EQ(target_path, entry->path);
+  EXPECT_FALSE(entry->is_unsafe);
+  EXPECT_FALSE(entry->is_directory);
+}
+
+// By default, file paths in ZIPs are interpreted as UTF-8. But in this test,
+// the ZIP archive contains file paths that are actually encoded in Shift JIS.
+// The SJIS-encoded paths are thus wrongly interpreted as UTF-8, resulting in
+// garbled paths. Invalid UTF-8 sequences are safely converted to the
+// replacement character <20>.
+TEST_F(ZipReaderTest, EncodingSjisAsUtf8) {
+  EXPECT_THAT(
+      GetPaths(data_dir_.AppendASCII("SJIS Bug 846195.zip")),
+      ElementsAre(
+          base::FilePath::FromUTF8Unsafe("<EFBFBD>V<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>t<EFBFBD>H<EFBFBD><EFBFBD><EFBFBD>_/SJIS_835C_<43><5F>.txt"),
+          base::FilePath::FromUTF8Unsafe(
+              "<EFBFBD>V<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>t<EFBFBD>H<EFBFBD><EFBFBD><EFBFBD>_/<2F>V<EFBFBD><56><EFBFBD><EFBFBD><EFBFBD>e<EFBFBD>L<EFBFBD>X<EFBFBD>g <20>h<EFBFBD>L<EFBFBD><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>g.txt")));
+}
+
+// In this test, SJIS-encoded paths are interpreted as Code Page 1252. This
+// results in garbled paths. Note the presence of C1 control codes U+0090 and
+// U+0081 in the garbled paths.
+TEST_F(ZipReaderTest, EncodingSjisAs1252) {
+  EXPECT_THAT(
+      GetPaths(data_dir_.AppendASCII("SJIS Bug 846195.zip"), "windows-1252"),
+      ElementsAre(base::FilePath::FromUTF8Unsafe(
+                      "\u0090V‚µ‚¢ƒtƒHƒ‹ƒ_/SJIS_835C_ƒ<5F>.txt"),
+                  base::FilePath::FromUTF8Unsafe(
+                      "\u0090V‚µ‚¢ƒtƒHƒ‹ƒ_/\u0090V‚µ‚¢ƒeƒLƒXƒg "
+                      "ƒhƒLƒ…ƒ\u0081ƒ“ƒg.txt")));
+}
+
+// In this test, SJIS-encoded paths are interpreted as Code Page 866. This
+// results in garbled paths.
+TEST_F(ZipReaderTest, EncodingSjisAsIbm866) {
+  EXPECT_THAT(
+      GetPaths(data_dir_.AppendASCII("SJIS Bug 846195.zip"), "IBM866"),
+      ElementsAre(
+          base::FilePath::FromUTF8Unsafe("РVВ╡ВвГtГHГЛГ_/SJIS_835C_Г<5F>.txt"),
+          base::FilePath::FromUTF8Unsafe(
+              "РVВ╡ВвГtГHГЛГ_/РVВ╡ВвГeГLГXГg ГhГLГЕГБГУГg.txt")));
+}
+
+// Tests that SJIS-encoded paths are correctly converted to Unicode.
+TEST_F(ZipReaderTest, EncodingSjis) {
+  EXPECT_THAT(
+      GetPaths(data_dir_.AppendASCII("SJIS Bug 846195.zip"), "Shift_JIS"),
+      ElementsAre(
+          base::FilePath::FromUTF8Unsafe("新しいフォルダ/SJIS_835C_ソ.txt"),
+          base::FilePath::FromUTF8Unsafe(
+              "新しいフォルダ/新しいテキスト ドキュメント.txt")));
+}
+
+TEST_F(ZipReaderTest, AbsoluteFile) {
+  ZipReader reader;
+  ASSERT_TRUE(
+      reader.Open(data_dir_.AppendASCII("evil_via_absolute_file_name.zip")));
+  base::FilePath target_path(FILE_PATH_LITERAL("ROOT/evil.txt"));
+  const ZipReader::Entry* entry = LocateAndOpenEntry(&reader, target_path);
+  ASSERT_TRUE(entry);
+  EXPECT_EQ(target_path, entry->path);
+  EXPECT_FALSE(entry->is_unsafe);
+  EXPECT_FALSE(entry->is_directory);
+}
+
+TEST_F(ZipReaderTest, Directory) {
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(test_zip_file_));
+  base::FilePath target_path(FILE_PATH_LITERAL("foo/bar/"));
+  const ZipReader::Entry* entry = LocateAndOpenEntry(&reader, target_path);
+  ASSERT_TRUE(entry);
+  EXPECT_EQ(target_path, entry->path);
+  // The directory size should be zero.
+  EXPECT_EQ(0, entry->original_size);
+  EXPECT_EQ("2009-05-31 15:49:52.000",
+            base::UnlocalizedTimeFormatWithPattern(entry->last_modified,
+                                                   "y-MM-dd HH:mm:ss.SSS",
+                                                   icu::TimeZone::getGMT()));
+  EXPECT_FALSE(entry->is_unsafe);
+  EXPECT_TRUE(entry->is_directory);
+}
+
+TEST_F(ZipReaderTest, EncryptedFile_WrongPassword) {
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("Different Encryptions.zip")));
+  reader.SetPassword("wrong password");
+
+  {
+    const ZipReader::Entry* entry = reader.Next();
+    ASSERT_TRUE(entry);
+    EXPECT_EQ(base::FilePath::FromASCII("ClearText.txt"), entry->path);
+    EXPECT_FALSE(entry->is_directory);
+    EXPECT_FALSE(entry->is_encrypted);
+    std::string contents = "dummy";
+    EXPECT_TRUE(reader.ExtractCurrentEntryToString(&contents));
+    EXPECT_EQ("This is not encrypted.\n", contents);
+  }
+
+  for (const std::string_view path : {
+           "Encrypted AES-128.txt",
+           "Encrypted AES-192.txt",
+           "Encrypted AES-256.txt",
+           "Encrypted ZipCrypto.txt",
+       }) {
+    const ZipReader::Entry* entry = reader.Next();
+    ASSERT_TRUE(entry);
+    EXPECT_EQ(base::FilePath::FromASCII(path), entry->path);
+    EXPECT_FALSE(entry->is_directory);
+    EXPECT_TRUE(entry->is_encrypted);
+    std::string contents = "dummy";
+    EXPECT_FALSE(reader.ExtractCurrentEntryToString(&contents));
+  }
+
+  EXPECT_FALSE(reader.Next());
+  EXPECT_TRUE(reader.ok());
+}
+
+TEST_F(ZipReaderTest, EncryptedFile_RightPassword) {
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("Different Encryptions.zip")));
+  reader.SetPassword("password");
+
+  {
+    const ZipReader::Entry* entry = reader.Next();
+    ASSERT_TRUE(entry);
+    EXPECT_EQ(base::FilePath::FromASCII("ClearText.txt"), entry->path);
+    EXPECT_FALSE(entry->is_directory);
+    EXPECT_FALSE(entry->is_encrypted);
+    std::string contents = "dummy";
+    EXPECT_TRUE(reader.ExtractCurrentEntryToString(&contents));
+    EXPECT_EQ("This is not encrypted.\n", contents);
+  }
+
+  // TODO(crbug.com/1296838) Support AES encryption.
+  for (const std::string_view path : {
+           "Encrypted AES-128.txt",
+           "Encrypted AES-192.txt",
+           "Encrypted AES-256.txt",
+       }) {
+    const ZipReader::Entry* entry = reader.Next();
+    ASSERT_TRUE(entry);
+    EXPECT_EQ(base::FilePath::FromASCII(path), entry->path);
+    EXPECT_FALSE(entry->is_directory);
+    EXPECT_TRUE(entry->is_encrypted);
+    std::string contents = "dummy";
+    EXPECT_FALSE(reader.ExtractCurrentEntryToString(&contents));
+    EXPECT_EQ("", contents);
+  }
+
+  {
+    const ZipReader::Entry* entry = reader.Next();
+    ASSERT_TRUE(entry);
+    EXPECT_EQ(base::FilePath::FromASCII("Encrypted ZipCrypto.txt"),
+              entry->path);
+    EXPECT_FALSE(entry->is_directory);
+    EXPECT_TRUE(entry->is_encrypted);
+    std::string contents = "dummy";
+    EXPECT_TRUE(reader.ExtractCurrentEntryToString(&contents));
+    EXPECT_EQ("This is encrypted with ZipCrypto.\n", contents);
+  }
+
+  EXPECT_FALSE(reader.Next());
+  EXPECT_TRUE(reader.ok());
+}
+
+// Verifies that the ZipReader class can extract a file from a zip archive
+// stored in memory. This test opens a zip archive in a std::string object,
+// extracts its content, and verifies the content is the same as the expected
+// text.
+TEST_F(ZipReaderTest, OpenFromString) {
+  // A zip archive consisting of one file "test.txt", which is a 16-byte text
+  // file that contains "This is a test.\n".
+  const char kTestData[] =
+      "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\xa4\x66\x24\x41\x13\xe8"
+      "\xcb\x27\x10\x00\x00\x00\x10\x00\x00\x00\x08\x00\x1c\x00\x74\x65"
+      "\x73\x74\x2e\x74\x78\x74\x55\x54\x09\x00\x03\x34\x89\x45\x50\x34"
+      "\x89\x45\x50\x75\x78\x0b\x00\x01\x04\x8e\xf0\x00\x00\x04\x88\x13"
+      "\x00\x00\x54\x68\x69\x73\x20\x69\x73\x20\x61\x20\x74\x65\x73\x74"
+      "\x2e\x0a\x50\x4b\x01\x02\x1e\x03\x0a\x00\x00\x00\x00\x00\xa4\x66"
+      "\x24\x41\x13\xe8\xcb\x27\x10\x00\x00\x00\x10\x00\x00\x00\x08\x00"
+      "\x18\x00\x00\x00\x00\x00\x01\x00\x00\x00\xa4\x81\x00\x00\x00\x00"
+      "\x74\x65\x73\x74\x2e\x74\x78\x74\x55\x54\x05\x00\x03\x34\x89\x45"
+      "\x50\x75\x78\x0b\x00\x01\x04\x8e\xf0\x00\x00\x04\x88\x13\x00\x00"
+      "\x50\x4b\x05\x06\x00\x00\x00\x00\x01\x00\x01\x00\x4e\x00\x00\x00"
+      "\x52\x00\x00\x00\x00\x00";
+  std::string data(kTestData, std::size(kTestData));
+  ZipReader reader;
+  ASSERT_TRUE(reader.OpenFromString(data));
+  base::FilePath target_path(FILE_PATH_LITERAL("test.txt"));
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, target_path));
+  ASSERT_TRUE(ExtractCurrentEntryToFilePath(&reader,
+                                            test_dir_.AppendASCII("test.txt")));
+
+  std::string actual;
+  ASSERT_TRUE(
+      base::ReadFileToString(test_dir_.AppendASCII("test.txt"), &actual));
+  EXPECT_EQ(std::string("This is a test.\n"), actual);
+}
+
+// Verifies that the asynchronous extraction to a file works.
+TEST_F(ZipReaderTest, ExtractToFileAsync_RegularFile) {
+  MockUnzipListener listener;
+
+  ZipReader reader;
+  base::FilePath target_file = test_dir_.AppendASCII("quux.txt");
+  base::FilePath target_path(FILE_PATH_LITERAL("foo/bar/quux.txt"));
+  ASSERT_TRUE(reader.Open(test_zip_file_));
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, target_path));
+  reader.ExtractCurrentEntryToFilePathAsync(
+      target_file,
+      base::BindOnce(&MockUnzipListener::OnUnzipSuccess, listener.AsWeakPtr()),
+      base::BindOnce(&MockUnzipListener::OnUnzipFailure, listener.AsWeakPtr()),
+      base::BindRepeating(&MockUnzipListener::OnUnzipProgress,
+                          listener.AsWeakPtr()));
+
+  EXPECT_EQ(0, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_EQ(0, listener.progress_calls());
+
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(1, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_LE(1, listener.progress_calls());
+
+  std::string output;
+  ASSERT_TRUE(
+      base::ReadFileToString(test_dir_.AppendASCII("quux.txt"), &output));
+  const std::string md5 = base::MD5String(output);
+  EXPECT_EQ(kQuuxExpectedMD5, md5);
+
+  std::optional<int64_t> file_size = base::GetFileSize(target_file);
+  ASSERT_TRUE(file_size.has_value());
+
+  EXPECT_EQ(file_size.value(), listener.current_progress());
+}
+
+TEST_F(ZipReaderTest, ExtractToFileAsync_Encrypted_NoPassword) {
+  MockUnzipListener listener;
+
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("Different Encryptions.zip")));
+  ASSERT_TRUE(LocateAndOpenEntry(
+      &reader, base::FilePath::FromASCII("Encrypted ZipCrypto.txt")));
+  const base::FilePath target_path = test_dir_.AppendASCII("extracted");
+  reader.ExtractCurrentEntryToFilePathAsync(
+      target_path,
+      base::BindOnce(&MockUnzipListener::OnUnzipSuccess, listener.AsWeakPtr()),
+      base::BindOnce(&MockUnzipListener::OnUnzipFailure, listener.AsWeakPtr()),
+      base::BindRepeating(&MockUnzipListener::OnUnzipProgress,
+                          listener.AsWeakPtr()));
+
+  EXPECT_EQ(0, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_EQ(0, listener.progress_calls());
+
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(0, listener.success_calls());
+  EXPECT_EQ(1, listener.failure_calls());
+  EXPECT_LE(1, listener.progress_calls());
+
+  // The extracted file contains rubbish data.
+  // We probably shouldn't even look at it.
+  std::string contents;
+  ASSERT_TRUE(base::ReadFileToString(target_path, &contents));
+  EXPECT_NE("", contents);
+  EXPECT_EQ(contents.size(), listener.current_progress());
+}
+
+TEST_F(ZipReaderTest, ExtractToFileAsync_Encrypted_RightPassword) {
+  MockUnzipListener listener;
+
+  ZipReader reader;
+  reader.SetPassword("password");
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("Different Encryptions.zip")));
+  ASSERT_TRUE(LocateAndOpenEntry(
+      &reader, base::FilePath::FromASCII("Encrypted ZipCrypto.txt")));
+  const base::FilePath target_path = test_dir_.AppendASCII("extracted");
+  reader.ExtractCurrentEntryToFilePathAsync(
+      target_path,
+      base::BindOnce(&MockUnzipListener::OnUnzipSuccess, listener.AsWeakPtr()),
+      base::BindOnce(&MockUnzipListener::OnUnzipFailure, listener.AsWeakPtr()),
+      base::BindRepeating(&MockUnzipListener::OnUnzipProgress,
+                          listener.AsWeakPtr()));
+
+  EXPECT_EQ(0, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_EQ(0, listener.progress_calls());
+
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(1, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_LE(1, listener.progress_calls());
+
+  std::string contents;
+  ASSERT_TRUE(base::ReadFileToString(target_path, &contents));
+  EXPECT_EQ("This is encrypted with ZipCrypto.\n", contents);
+  EXPECT_EQ(contents.size(), listener.current_progress());
+}
+
+TEST_F(ZipReaderTest, ExtractToFileAsync_WrongCrc) {
+  MockUnzipListener listener;
+
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("Wrong CRC.zip")));
+  ASSERT_TRUE(
+      LocateAndOpenEntry(&reader, base::FilePath::FromASCII("Corrupted.txt")));
+  const base::FilePath target_path = test_dir_.AppendASCII("extracted");
+  reader.ExtractCurrentEntryToFilePathAsync(
+      target_path,
+      base::BindOnce(&MockUnzipListener::OnUnzipSuccess, listener.AsWeakPtr()),
+      base::BindOnce(&MockUnzipListener::OnUnzipFailure, listener.AsWeakPtr()),
+      base::BindRepeating(&MockUnzipListener::OnUnzipProgress,
+                          listener.AsWeakPtr()));
+
+  EXPECT_EQ(0, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_EQ(0, listener.progress_calls());
+
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(0, listener.success_calls());
+  EXPECT_EQ(1, listener.failure_calls());
+  EXPECT_LE(1, listener.progress_calls());
+
+  std::string contents;
+  ASSERT_TRUE(base::ReadFileToString(target_path, &contents));
+  EXPECT_EQ("This file has been changed after its CRC was computed.\n",
+            contents);
+  EXPECT_EQ(contents.size(), listener.current_progress());
+}
+
+// Verifies that the asynchronous extraction to a file works.
+TEST_F(ZipReaderTest, ExtractToFileAsync_Directory) {
+  MockUnzipListener listener;
+
+  ZipReader reader;
+  base::FilePath target_file = test_dir_.AppendASCII("foo");
+  base::FilePath target_path(FILE_PATH_LITERAL("foo/"));
+  ASSERT_TRUE(reader.Open(test_zip_file_));
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, target_path));
+  reader.ExtractCurrentEntryToFilePathAsync(
+      target_file,
+      base::BindOnce(&MockUnzipListener::OnUnzipSuccess, listener.AsWeakPtr()),
+      base::BindOnce(&MockUnzipListener::OnUnzipFailure, listener.AsWeakPtr()),
+      base::BindRepeating(&MockUnzipListener::OnUnzipProgress,
+                          listener.AsWeakPtr()));
+
+  EXPECT_EQ(0, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_EQ(0, listener.progress_calls());
+
+  base::RunLoop().RunUntilIdle();
+
+  EXPECT_EQ(1, listener.success_calls());
+  EXPECT_EQ(0, listener.failure_calls());
+  EXPECT_GE(0, listener.progress_calls());
+
+  ASSERT_TRUE(base::DirectoryExists(target_file));
+}
+
+TEST_F(ZipReaderTest, ExtractCurrentEntryToString) {
+  // test_mismatch_size.zip contains files with names from 0.txt to 7.txt with
+  // sizes from 0 to 7 bytes respectively, being the contents of each file a
+  // substring of "0123456" starting at '0'.
+  base::FilePath test_zip_file =
+      data_dir_.AppendASCII("test_mismatch_size.zip");
+
+  ZipReader reader;
+  std::string contents;
+  ASSERT_TRUE(reader.Open(test_zip_file));
+
+  for (size_t i = 0; i < 8; i++) {
+    SCOPED_TRACE(base::StringPrintf("Processing %d.txt", static_cast<int>(i)));
+
+    base::FilePath file_name = base::FilePath::FromUTF8Unsafe(
+        base::StringPrintf("%d.txt", static_cast<int>(i)));
+    ASSERT_TRUE(LocateAndOpenEntry(&reader, file_name));
+
+    if (i > 1) {
+      // Off by one byte read limit: must fail.
+      EXPECT_FALSE(reader.ExtractCurrentEntryToString(i - 1, &contents));
+    }
+
+    if (i > 0) {
+      // Exact byte read limit: must pass.
+      EXPECT_TRUE(reader.ExtractCurrentEntryToString(i, &contents));
+      EXPECT_EQ(std::string(std::string_view("0123456", i)), contents);
+    }
+
+    // More than necessary byte read limit: must pass.
+    EXPECT_TRUE(reader.ExtractCurrentEntryToString(&contents));
+    EXPECT_EQ(std::string(std::string_view("0123456", i)), contents);
+  }
+  reader.Close();
+}
+
+TEST_F(ZipReaderTest, ExtractPartOfCurrentEntry) {
+  // test_mismatch_size.zip contains files with names from 0.txt to 7.txt with
+  // sizes from 0 to 7 bytes respectively, being the contents of each file a
+  // substring of "0123456" starting at '0'.
+  base::FilePath test_zip_file =
+      data_dir_.AppendASCII("test_mismatch_size.zip");
+
+  ZipReader reader;
+  std::string contents;
+  ASSERT_TRUE(reader.Open(test_zip_file));
+
+  base::FilePath file_name0 = base::FilePath::FromUTF8Unsafe("0.txt");
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, file_name0));
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(0, &contents));
+  EXPECT_EQ("", contents);
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(1, &contents));
+  EXPECT_EQ("", contents);
+
+  base::FilePath file_name1 = base::FilePath::FromUTF8Unsafe("1.txt");
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, file_name1));
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(0, &contents));
+  EXPECT_EQ("", contents);
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(1, &contents));
+  EXPECT_EQ("0", contents);
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(2, &contents));
+  EXPECT_EQ("0", contents);
+
+  base::FilePath file_name4 = base::FilePath::FromUTF8Unsafe("4.txt");
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, file_name4));
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(0, &contents));
+  EXPECT_EQ("", contents);
+  EXPECT_FALSE(reader.ExtractCurrentEntryToString(2, &contents));
+  EXPECT_EQ("01", contents);
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(4, &contents));
+  EXPECT_EQ("0123", contents);
+  // Checks that entire file is extracted and function returns true when
+  // |max_read_bytes| is larger than file size.
+  EXPECT_TRUE(reader.ExtractCurrentEntryToString(5, &contents));
+  EXPECT_EQ("0123", contents);
+
+  reader.Close();
+}
+
+TEST_F(ZipReaderTest, ExtractPosixPermissions) {
+  base::ScopedTempDir temp_dir;
+  ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
+
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("test_posix_permissions.zip")));
+  for (auto entry : {"0.txt", "1.txt", "2.txt", "3.txt"}) {
+    ASSERT_TRUE(LocateAndOpenEntry(&reader, base::FilePath::FromASCII(entry)));
+    FilePathWriterDelegate delegate(temp_dir.GetPath().AppendASCII(entry));
+    ASSERT_TRUE(reader.ExtractCurrentEntry(&delegate));
+  }
+  reader.Close();
+
+#if defined(OS_POSIX)
+  // This assumes a umask of at least 0400.
+  int mode = 0;
+  EXPECT_TRUE(base::GetPosixFilePermissions(
+      temp_dir.GetPath().AppendASCII("0.txt"), &mode));
+  EXPECT_EQ(mode & 0700, 0700);
+  EXPECT_TRUE(base::GetPosixFilePermissions(
+      temp_dir.GetPath().AppendASCII("1.txt"), &mode));
+  EXPECT_EQ(mode & 0700, 0600);
+  EXPECT_TRUE(base::GetPosixFilePermissions(
+      temp_dir.GetPath().AppendASCII("2.txt"), &mode));
+  EXPECT_EQ(mode & 0700, 0700);
+  EXPECT_TRUE(base::GetPosixFilePermissions(
+      temp_dir.GetPath().AppendASCII("3.txt"), &mode));
+  EXPECT_EQ(mode & 0700, 0600);
+#endif
+}
+
+// This test exposes http://crbug.com/430959, at least on OS X
+TEST_F(ZipReaderTest, DISABLED_LeakDetectionTest) {
+  for (int i = 0; i < 100000; ++i) {
+    FileWrapper zip_fd_wrapper(test_zip_file_, FileWrapper::READ_ONLY);
+    ZipReader reader;
+    ASSERT_TRUE(reader.OpenFromPlatformFile(zip_fd_wrapper.platform_file()));
+  }
+}
+
+// Test that when WriterDelegate::PrepareMock returns false, no other methods on
+// the delegate are called and the extraction fails.
+TEST_F(ZipReaderTest, ExtractCurrentEntryPrepareFailure) {
+  testing::StrictMock<MockWriterDelegate> mock_writer;
+
+  EXPECT_CALL(mock_writer, PrepareOutput()).WillOnce(Return(false));
+
+  base::FilePath target_path(FILE_PATH_LITERAL("foo/bar/quux.txt"));
+  ZipReader reader;
+
+  ASSERT_TRUE(reader.Open(test_zip_file_));
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, target_path));
+  ASSERT_FALSE(reader.ExtractCurrentEntry(&mock_writer));
+}
+
+// Test that when WriterDelegate::WriteBytes returns false, only the OnError
+// method on the delegate is called and the extraction fails.
+TEST_F(ZipReaderTest, ExtractCurrentEntryWriteBytesFailure) {
+  testing::StrictMock<MockWriterDelegate> mock_writer;
+
+  EXPECT_CALL(mock_writer, PrepareOutput()).WillOnce(Return(true));
+  EXPECT_CALL(mock_writer, WriteBytes(_, _)).WillOnce(Return(false));
+  EXPECT_CALL(mock_writer, OnError());
+
+  base::FilePath target_path(FILE_PATH_LITERAL("foo/bar/quux.txt"));
+  ZipReader reader;
+
+  ASSERT_TRUE(reader.Open(test_zip_file_));
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, target_path));
+  ASSERT_FALSE(reader.ExtractCurrentEntry(&mock_writer));
+}
+
+// Test that extraction succeeds when the writer delegate reports all is well.
+TEST_F(ZipReaderTest, ExtractCurrentEntrySuccess) {
+  testing::StrictMock<MockWriterDelegate> mock_writer;
+
+  EXPECT_CALL(mock_writer, PrepareOutput()).WillOnce(Return(true));
+  EXPECT_CALL(mock_writer, WriteBytes(_, _)).WillRepeatedly(Return(true));
+  EXPECT_CALL(mock_writer, SetPosixFilePermissions(_));
+  EXPECT_CALL(mock_writer, SetTimeModified(_));
+
+  base::FilePath target_path(FILE_PATH_LITERAL("foo/bar/quux.txt"));
+  ZipReader reader;
+
+  ASSERT_TRUE(reader.Open(test_zip_file_));
+  ASSERT_TRUE(LocateAndOpenEntry(&reader, target_path));
+  ASSERT_TRUE(reader.ExtractCurrentEntry(&mock_writer));
+}
+
+TEST_F(ZipReaderTest, WrongCrc) {
+  ZipReader reader;
+  ASSERT_TRUE(reader.Open(data_dir_.AppendASCII("Wrong CRC.zip")));
+
+  const ZipReader::Entry* const entry =
+      LocateAndOpenEntry(&reader, base::FilePath::FromASCII("Corrupted.txt"));
+  ASSERT_TRUE(entry);
+
+  std::string contents = "dummy";
+  EXPECT_FALSE(reader.ExtractCurrentEntryToString(&contents));
+  EXPECT_EQ("This file has been changed after its CRC was computed.\n",
+            contents);
+
+  contents = "dummy";
+  EXPECT_FALSE(
+      reader.ExtractCurrentEntryToString(entry->original_size + 1, &contents));
+  EXPECT_EQ("This file has been changed after its CRC was computed.\n",
+            contents);
+
+  contents = "dummy";
+  EXPECT_FALSE(
+      reader.ExtractCurrentEntryToString(entry->original_size, &contents));
+  EXPECT_EQ("This file has been changed after its CRC was computed.\n",
+            contents);
+
+  contents = "dummy";
+  EXPECT_FALSE(
+      reader.ExtractCurrentEntryToString(entry->original_size - 1, &contents));
+  EXPECT_EQ("This file has been changed after its CRC was computed.", contents);
+}
+
+class FileWriterDelegateTest : public ::testing::Test {
+ protected:
+  void SetUp() override {
+    ASSERT_TRUE(base::CreateTemporaryFile(&temp_file_path_));
+    file_.Initialize(temp_file_path_,
+                     (base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_READ |
+                      base::File::FLAG_WRITE | base::File::FLAG_WIN_TEMPORARY |
+                      base::File::FLAG_DELETE_ON_CLOSE));
+    ASSERT_TRUE(file_.IsValid());
+  }
+
+  base::FilePath temp_file_path_;
+  base::File file_;
+};
+
+TEST_F(FileWriterDelegateTest, WriteToEnd) {
+  const std::string payload = "This is the actualy payload data.\n";
+
+  {
+    FileWriterDelegate writer(&file_);
+    EXPECT_EQ(0, writer.file_length());
+    ASSERT_TRUE(writer.PrepareOutput());
+    ASSERT_TRUE(writer.WriteBytes(payload.data(), payload.size()));
+    EXPECT_EQ(payload.size(), writer.file_length());
+  }
+
+  EXPECT_EQ(payload.size(), file_.GetLength());
+}
+
+TEST_F(FileWriterDelegateTest, EmptyOnError) {
+  const std::string payload = "This is the actualy payload data.\n";
+
+  {
+    FileWriterDelegate writer(&file_);
+    EXPECT_EQ(0, writer.file_length());
+    ASSERT_TRUE(writer.PrepareOutput());
+    ASSERT_TRUE(writer.WriteBytes(payload.data(), payload.size()));
+    EXPECT_EQ(payload.size(), writer.file_length());
+    EXPECT_EQ(payload.size(), file_.GetLength());
+    writer.OnError();
+    EXPECT_EQ(0, writer.file_length());
+  }
+
+  EXPECT_EQ(0, file_.GetLength());
+}
+
+}  // namespace zip

deps/v8/third_party/zlib/google/zip_writer.cc

@@ -0,0 +1,309 @@
+// Copyright 2017 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "third_party/zlib/google/zip_writer.h"
+
+#include <algorithm>
+#include <tuple>
+
+#include "base/files/file.h"
+#include "base/logging.h"
+#include "base/strings/strcat.h"
+#include "base/strings/string_util.h"
+#include "third_party/zlib/google/redact.h"
+#include "third_party/zlib/google/zip_internal.h"
+
+namespace zip {
+namespace internal {
+
+bool ZipWriter::ShouldContinue() {
+  if (!progress_callback_)
+    return true;
+
+  const base::TimeTicks now = base::TimeTicks::Now();
+  if (next_progress_report_time_ > now)
+    return true;
+
+  next_progress_report_time_ = now + progress_period_;
+  if (progress_callback_.Run(progress_))
+    return true;
+
+  LOG(ERROR) << "Cancelling ZIP creation";
+  return false;
+}
+
+bool ZipWriter::AddFileContent(const base::FilePath& path, base::File file) {
+  char buf[zip::internal::kZipBufSize];
+
+  while (ShouldContinue()) {
+    const int num_bytes =
+        file.ReadAtCurrentPos(buf, zip::internal::kZipBufSize);
+
+    if (num_bytes < 0) {
+      PLOG(ERROR) << "Cannot read file " << Redact(path);
+      return false;
+    }
+
+    if (num_bytes == 0)
+      return true;
+
+    if (zipWriteInFileInZip(zip_file_, buf, num_bytes) != ZIP_OK) {
+      PLOG(ERROR) << "Cannot write data from file " << Redact(path)
+                  << " to ZIP";
+      return false;
+    }
+
+    progress_.bytes += num_bytes;
+  }
+
+  return false;
+}
+
+bool ZipWriter::OpenNewFileEntry(const base::FilePath& path,
+                                 bool is_directory,
+                                 base::Time last_modified) {
+  std::string str_path = path.AsUTF8Unsafe();
+
+#if defined(OS_WIN)
+  base::ReplaceSubstringsAfterOffset(&str_path, 0u, "\\", "/");
+#endif
+
+  Compression compression = kDeflated;
+
+  if (is_directory) {
+    str_path += "/";
+  } else {
+    compression = GetCompressionMethod(path);
+  }
+
+  return zip::internal::ZipOpenNewFileInZip(zip_file_, str_path, last_modified,
+                                            compression);
+}
+
+bool ZipWriter::CloseNewFileEntry() {
+  return zipCloseFileInZip(zip_file_) == ZIP_OK;
+}
+
+bool ZipWriter::AddFileEntry(const base::FilePath& path, base::File file) {
+  base::File::Info info;
+  if (!file.GetInfo(&info))
+    return false;
+
+  if (!OpenNewFileEntry(path, /*is_directory=*/false, info.last_modified))
+    return false;
+
+  if (!AddFileContent(path, std::move(file)))
+    return false;
+
+  progress_.files++;
+  return CloseNewFileEntry();
+}
+
+bool ZipWriter::AddDirectoryEntry(const base::FilePath& path) {
+  FileAccessor::Info info;
+  if (!file_accessor_->GetInfo(path, &info) || !info.is_directory) {
+    LOG(ERROR) << "Not a directory: " << Redact(path);
+    progress_.errors++;
+    return continue_on_error_;
+  }
+
+  if (!OpenNewFileEntry(path, /*is_directory=*/true, info.last_modified))
+    return false;
+
+  if (!CloseNewFileEntry())
+    return false;
+
+  progress_.directories++;
+  if (!ShouldContinue())
+    return false;
+
+  if (!recursive_)
+    return true;
+
+  return AddDirectoryContents(path);
+}
+
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+// static
+std::unique_ptr<ZipWriter> ZipWriter::CreateWithFd(
+    int zip_file_fd,
+    FileAccessor* file_accessor) {
+  DCHECK(zip_file_fd != base::kInvalidPlatformFile);
+  zipFile zip_file =
+      internal::OpenFdForZipping(zip_file_fd, APPEND_STATUS_CREATE);
+
+  if (!zip_file) {
+    DLOG(ERROR) << "Cannot create ZIP file for FD " << zip_file_fd;
+    return nullptr;
+  }
+
+  return std::unique_ptr<ZipWriter>(new ZipWriter(zip_file, file_accessor));
+}
+#endif
+
+// static
+std::unique_ptr<ZipWriter> ZipWriter::Create(
+    const base::FilePath& zip_file_path,
+    FileAccessor* file_accessor) {
+  DCHECK(!zip_file_path.empty());
+  zipFile zip_file = internal::OpenForZipping(zip_file_path.AsUTF8Unsafe(),
+                                              APPEND_STATUS_CREATE);
+
+  if (!zip_file) {
+    PLOG(ERROR) << "Cannot create ZIP file " << Redact(zip_file_path);
+    return nullptr;
+  }
+
+  return std::unique_ptr<ZipWriter>(new ZipWriter(zip_file, file_accessor));
+}
+
+ZipWriter::ZipWriter(zipFile zip_file, FileAccessor* file_accessor)
+    : zip_file_(zip_file), file_accessor_(file_accessor) {}
+
+ZipWriter::~ZipWriter() {
+  if (zip_file_)
+    zipClose(zip_file_, nullptr);
+}
+
+bool ZipWriter::Close() {
+  const bool success = zipClose(zip_file_, nullptr) == ZIP_OK;
+  zip_file_ = nullptr;
+
+  // Call the progress callback one last time with the final progress status.
+  if (progress_callback_ && !progress_callback_.Run(progress_)) {
+    LOG(ERROR) << "Cancelling ZIP creation at the end";
+    return false;
+  }
+
+  return success;
+}
+
+bool ZipWriter::AddMixedEntries(Paths paths) {
+  // Pointers to directory paths in |paths|.
+  std::vector<const base::FilePath*> directories;
+
+  // Declared outside loop to reuse internal buffer.
+  std::vector<base::File> files;
+
+  // First pass. We don't know which paths are files and which ones are
+  // directories, and we want to avoid making a call to file_accessor_ for each
+  // path. Try to open all of the paths as files. We'll get invalid file
+  // descriptors for directories, and we'll process these directories in the
+  // second pass.
+  while (!paths.empty()) {
+    // Work with chunks of 50 paths at most.
+    const size_t n = std::min<size_t>(paths.size(), 50);
+    Paths relative_paths;
+    std::tie(relative_paths, paths) = paths.split_at(n);
+
+    files.clear();
+    if (!file_accessor_->Open(relative_paths, &files) || files.size() != n)
+      return false;
+
+    for (size_t i = 0; i < n; i++) {
+      const base::FilePath& relative_path = relative_paths[i];
+      DCHECK(!relative_path.empty());
+      base::File& file = files[i];
+
+      if (file.IsValid()) {
+        // It's a file.
+        if (!AddFileEntry(relative_path, std::move(file)))
+          return false;
+      } else {
+        // It's probably a directory. Remember its path for the second pass.
+        directories.push_back(&relative_path);
+      }
+    }
+  }
+
+  // Second pass for directories discovered during the first pass.
+  for (const base::FilePath* const path : directories) {
+    DCHECK(path);
+    if (!AddDirectoryEntry(*path))
+      return false;
+  }
+
+  return true;
+}
+
+bool ZipWriter::AddFileEntries(Paths paths) {
+  // Declared outside loop to reuse internal buffer.
+  std::vector<base::File> files;
+
+  while (!paths.empty()) {
+    // Work with chunks of 50 paths at most.
+    const size_t n = std::min<size_t>(paths.size(), 50);
+    Paths relative_paths;
+    std::tie(relative_paths, paths) = paths.split_at(n);
+
+    DCHECK_EQ(relative_paths.size(), n);
+
+    files.clear();
+    if (!file_accessor_->Open(relative_paths, &files) || files.size() != n)
+      return false;
+
+    for (size_t i = 0; i < n; i++) {
+      const base::FilePath& relative_path = relative_paths[i];
+      DCHECK(!relative_path.empty());
+      base::File& file = files[i];
+
+      if (!file.IsValid()) {
+        LOG(ERROR) << "Cannot open " << Redact(relative_path);
+        progress_.errors++;
+
+        if (continue_on_error_)
+          continue;
+
+        return false;
+      }
+
+      if (!AddFileEntry(relative_path, std::move(file)))
+        return false;
+    }
+  }
+
+  return true;
+}
+
+bool ZipWriter::AddDirectoryEntries(Paths paths) {
+  for (const base::FilePath& path : paths) {
+    if (!AddDirectoryEntry(path))
+      return false;
+  }
+
+  return true;
+}
+
+bool ZipWriter::AddDirectoryContents(const base::FilePath& path) {
+  std::vector<base::FilePath> files, subdirs;
+
+  if (!file_accessor_->List(path, &files, &subdirs)) {
+    progress_.errors++;
+    return continue_on_error_;
+  }
+
+  Filter(&files);
+  Filter(&subdirs);
+
+  if (!AddFileEntries(files))
+    return false;
+
+  return AddDirectoryEntries(subdirs);
+}
+
+void ZipWriter::Filter(std::vector<base::FilePath>* const paths) {
+  DCHECK(paths);
+
+  if (!filter_callback_)
+    return;
+
+  const auto end = std::remove_if(paths->begin(), paths->end(),
+                                  [this](const base::FilePath& path) {
+                                    return !filter_callback_.Run(path);
+                                  });
+  paths->erase(end, paths->end());
+}
+
+}  // namespace internal
+}  // namespace zip

deps/v8/third_party/zlib/google/zip_writer.h

@@ -0,0 +1,154 @@
+// Copyright 2017 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_ZLIB_GOOGLE_ZIP_WRITER_H_
+#define THIRD_PARTY_ZLIB_GOOGLE_ZIP_WRITER_H_
+
+#include <memory>
+#include <vector>
+
+#include "base/files/file_path.h"
+#include "base/time/time.h"
+#include "build/build_config.h"
+#include "third_party/zlib/google/zip.h"
+
+#if defined(USE_SYSTEM_MINIZIP)
+#include <minizip/unzip.h>
+#include <minizip/zip.h>
+#else
+#include "third_party/zlib/contrib/minizip/unzip.h"
+#include "third_party/zlib/contrib/minizip/zip.h"
+#endif
+
+namespace zip {
+namespace internal {
+
+// A class used to write entries to a ZIP file and buffering the reading of
+// files to limit the number of calls to the FileAccessor. This is for
+// performance reasons as these calls may be expensive when IPC based).
+// This class is so far internal and only used by zip.cc, but could be made
+// public if needed.
+//
+// All methods returning a bool return true on success and false on error.
+class ZipWriter {
+ public:
+// Creates a writer that will write a ZIP file to |zip_file_fd| or |zip_file|
+// and which entries are relative to |file_accessor|'s source directory.
+// All file reads are performed using |file_accessor|.
+#if defined(OS_POSIX) || defined(OS_FUCHSIA)
+  static std::unique_ptr<ZipWriter> CreateWithFd(int zip_file_fd,
+                                                 FileAccessor* file_accessor);
+#endif
+
+  static std::unique_ptr<ZipWriter> Create(const base::FilePath& zip_file,
+                                           FileAccessor* file_accessor);
+
+  ZipWriter(const ZipWriter&) = delete;
+  ZipWriter& operator=(const ZipWriter&) = delete;
+
+  ~ZipWriter();
+
+  // Sets the optional progress callback. The callback is called once for each
+  // time |period|. The final callback is always called when the ZIP operation
+  // completes.
+  void SetProgressCallback(ProgressCallback callback, base::TimeDelta period) {
+    progress_callback_ = std::move(callback);
+    progress_period_ = std::move(period);
+  }
+
+  // Should ignore missing files and directories?
+  void ContinueOnError(bool continue_on_error) {
+    continue_on_error_ = continue_on_error;
+  }
+
+  // Sets the recursive flag, indicating whether the contents of subdirectories
+  // should be included.
+  void SetRecursive(bool b) { recursive_ = b; }
+
+  // Sets the filter callback.
+  void SetFilterCallback(FilterCallback callback) {
+    filter_callback_ = std::move(callback);
+  }
+
+  // Adds the contents of a directory. If the recursive flag is set, the
+  // contents of subdirectories are also added.
+  bool AddDirectoryContents(const base::FilePath& path);
+
+  // Adds the entries at |paths| to the ZIP file. These can be a mixed bag of
+  // files and directories. If the recursive flag is set, the contents of
+  // subdirectories is also added.
+  bool AddMixedEntries(Paths paths);
+
+  // Closes the ZIP file.
+  bool Close();
+
+ private:
+  // Takes ownership of |zip_file|.
+  ZipWriter(zipFile zip_file, FileAccessor* file_accessor);
+
+  // Regularly called during processing to check whether zipping should continue
+  // or should be cancelled.
+  bool ShouldContinue();
+
+  // Adds file content to currently open file entry.
+  bool AddFileContent(const base::FilePath& path, base::File file);
+
+  // Adds a file entry (including file contents).
+  bool AddFileEntry(const base::FilePath& path, base::File file);
+
+  // Adds file entries. All the paths should be existing files.
+  bool AddFileEntries(Paths paths);
+
+  // Adds a directory entry. If the recursive flag is set, the contents of this
+  // directory are also added.
+  bool AddDirectoryEntry(const base::FilePath& path);
+
+  // Adds directory entries. All the paths should be existing directories. If
+  // the recursive flag is set, the contents of these directories are also
+  // added.
+  bool AddDirectoryEntries(Paths paths);
+
+  // Opens a file or directory entry.
+  bool OpenNewFileEntry(const base::FilePath& path,
+                        bool is_directory,
+                        base::Time last_modified);
+
+  // Closes the currently open entry.
+  bool CloseNewFileEntry();
+
+  // Filters entries.
+  void Filter(std::vector<base::FilePath>* paths);
+
+  // The actual zip file.
+  zipFile zip_file_;
+
+  // Abstraction over file access methods used to read files.
+  FileAccessor* const file_accessor_;
+
+  // Progress stats.
+  Progress progress_;
+
+  // Optional progress callback.
+  ProgressCallback progress_callback_;
+
+  // Optional progress reporting period.
+  base::TimeDelta progress_period_;
+
+  // Next time to report progress.
+  base::TimeTicks next_progress_report_time_ = base::TimeTicks::Now();
+
+  // Filter used to exclude files from the ZIP file.
+  FilterCallback filter_callback_;
+
+  // Should recursively add directories?
+  bool recursive_ = false;
+
+  // Should ignore missing files and directories?
+  bool continue_on_error_ = false;
+};
+
+}  // namespace internal
+}  // namespace zip
+
+#endif  // THIRD_PARTY_ZLIB_GOOGLE_ZIP_WRITER_H_

deps/v8/third_party/zlib/gzclose.c

@@ -0,0 +1,23 @@
+/* gzclose.c -- zlib gzclose() function
+ * Copyright (C) 2004, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+/* gzclose() is in a separate file so that it is linked in only if it is used.
+   That way the other gzclose functions can be used instead to avoid linking in
+   unneeded compression or decompression routines. */
+int ZEXPORT gzclose(gzFile file) {
+#ifndef NO_GZCOMPRESS
+    gz_statep state;
+
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
+#else
+    return gzclose_r(file);
+#endif
+}

deps/v8/third_party/zlib/gzguts.h

@@ -0,0 +1,218 @@
+/* gzguts.h -- zlib internal header definitions for gz* operations
+ * Copyright (C) 2004-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#ifdef _LARGEFILE64_SOURCE
+#  ifndef _LARGEFILE_SOURCE
+#    define _LARGEFILE_SOURCE 1
+#  endif
+#  undef _FILE_OFFSET_BITS
+#  undef _TIME_BITS
+#endif
+
+#ifdef HAVE_HIDDEN
+#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
+#else
+#  define ZLIB_INTERNAL
+#endif
+
+#include <stdio.h>
+#include "zlib.h"
+#ifdef STDC
+#  include <string.h>
+#  include <stdlib.h>
+#  include <limits.h>
+#endif
+
+#ifndef _POSIX_SOURCE
+#  define _POSIX_SOURCE
+#endif
+#include <fcntl.h>
+
+#ifdef _WIN32
+#  include <stddef.h>
+#endif
+
+#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
+#  include <io.h>
+#endif
+
+#if defined(_WIN32)
+#  define WIDECHAR
+#endif
+
+#ifdef WINAPI_FAMILY
+#  define open _open
+#  define read _read
+#  define write _write
+#  define close _close
+#endif
+
+#ifdef NO_DEFLATE       /* for compatibility with old definition */
+#  define NO_GZCOMPRESS
+#endif
+
+#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#if defined(__CYGWIN__)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
+#  ifndef HAVE_VSNPRINTF
+#    define HAVE_VSNPRINTF
+#  endif
+#endif
+
+#ifndef HAVE_VSNPRINTF
+#  ifdef MSDOS
+/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
+   but for now we just assume it doesn't. */
+#    define NO_vsnprintf
+#  endif
+#  ifdef __TURBOC__
+#    define NO_vsnprintf
+#  endif
+#  ifdef WIN32
+/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
+#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
+#      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
+#         define vsnprintf _vsnprintf
+#      endif
+#    endif
+#  endif
+#  ifdef __SASC
+#    define NO_vsnprintf
+#  endif
+#  ifdef VMS
+#    define NO_vsnprintf
+#  endif
+#  ifdef __OS400__
+#    define NO_vsnprintf
+#  endif
+#  ifdef __MVS__
+#    define NO_vsnprintf
+#  endif
+#endif
+
+/* unlike snprintf (which is required in C99), _snprintf does not guarantee
+   null termination of the result -- however this is only used in gzlib.c where
+   the result is assured to fit in the space provided */
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#  define snprintf _snprintf
+#endif
+
+#ifndef local
+#  define local static
+#endif
+/* since "static" is used to mean two completely different things in C, we
+   define "local" for the non-static meaning of "static", for readability
+   (compile with -Dlocal if your debugger can't find static symbols) */
+
+/* gz* functions always use library allocation functions */
+#ifndef STDC
+  extern voidp  malloc(uInt size);
+  extern void   free(voidpf ptr);
+#endif
+
+/* get errno and strerror definition */
+#if defined UNDER_CE
+#  include <windows.h>
+#  define zstrerror() gz_strwinerror((DWORD)GetLastError())
+#else
+#  ifndef NO_STRERROR
+#    include <errno.h>
+#    define zstrerror() strerror(errno)
+#  else
+#    define zstrerror() "stdio error (consult errno)"
+#  endif
+#endif
+
+/* provide prototypes for these when building zlib without LFS */
+#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
+    ZEXTERN gzFile ZEXPORT gzopen64(const char *, const char *);
+    ZEXTERN z_off64_t ZEXPORT gzseek64(gzFile, z_off64_t, int);
+    ZEXTERN z_off64_t ZEXPORT gztell64(gzFile);
+    ZEXTERN z_off64_t ZEXPORT gzoffset64(gzFile);
+#endif
+
+/* default memLevel */
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+
+/* default i/o buffer size -- double this for output when reading (this and
+   twice this must be able to fit in an unsigned type) */
+#define GZBUFSIZE 8192
+
+/* gzip modes, also provide a little integrity check on the passed structure */
+#define GZ_NONE 0
+#define GZ_READ 7247
+#define GZ_WRITE 31153
+#define GZ_APPEND 1     /* mode set to GZ_WRITE after the file is opened */
+
+/* values for gz_state how */
+#define LOOK 0      /* look for a gzip header */
+#define COPY 1      /* copy input directly */
+#define GZIP 2      /* decompress a gzip stream */
+
+/* internal gzip file state data structure */
+typedef struct {
+        /* exposed contents for gzgetc() macro */
+    struct gzFile_s x;      /* "x" for exposed */
+                            /* x.have: number of bytes available at x.next */
+                            /* x.next: next output data to deliver or write */
+                            /* x.pos: current position in uncompressed data */
+        /* used for both reading and writing */
+    int mode;               /* see gzip modes above */
+    int fd;                 /* file descriptor */
+    char *path;             /* path or fd for error messages */
+    unsigned size;          /* buffer size, zero if not allocated yet */
+    unsigned want;          /* requested buffer size, default is GZBUFSIZE */
+    unsigned char *in;      /* input buffer (double-sized when writing) */
+    unsigned char *out;     /* output buffer (double-sized when reading) */
+    int direct;             /* 0 if processing gzip, 1 if transparent */
+        /* just for reading */
+    int how;                /* 0: get header, 1: copy, 2: decompress */
+    z_off64_t start;        /* where the gzip data started, for rewinding */
+    int eof;                /* true if end of input file reached */
+    int past;               /* true if read requested past end */
+        /* just for writing */
+    int level;              /* compression level */
+    int strategy;           /* compression strategy */
+    int reset;              /* true if a reset is pending after a Z_FINISH */
+        /* seek request */
+    z_off64_t skip;         /* amount to skip (already rewound if backwards) */
+    int seek;               /* true if seek request pending */
+        /* error information */
+    int err;                /* error code */
+    char *msg;              /* error message */
+        /* zlib inflate or deflate stream */
+    z_stream strm;          /* stream structure in-place (not a pointer) */
+} gz_state;
+typedef gz_state FAR *gz_statep;
+
+/* shared functions */
+void ZLIB_INTERNAL gz_error(gz_statep, int, const char *);
+#if defined UNDER_CE
+char ZLIB_INTERNAL *gz_strwinerror(DWORD error);
+#endif
+
+/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
+   value -- needed when comparing unsigned to z_off64_t, which is signed
+   (possible z_off64_t types off_t, off64_t, and long are all signed) */
+#ifdef INT_MAX
+#  define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
+#else
+unsigned ZLIB_INTERNAL gz_intmax(void);
+#  define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
+#endif

deps/v8/third_party/zlib/gzlib.c

@@ -0,0 +1,585 @@
+/* gzlib.c -- zlib functions common to reading and writing gzip files
+ * Copyright (C) 2004-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+#if defined(_WIN32) && !defined(__BORLANDC__)
+#  define LSEEK _lseeki64
+#  define OPEN  open
+#else
+#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
+#  define LSEEK lseek64
+#  define OPEN  open64
+#else
+#  define LSEEK lseek
+#  define OPEN  open
+#endif
+#endif
+
+#if defined UNDER_CE
+
+/* Map the Windows error number in ERROR to a locale-dependent error message
+   string and return a pointer to it.  Typically, the values for ERROR come
+   from GetLastError.
+
+   The string pointed to shall not be modified by the application, but may be
+   overwritten by a subsequent call to gz_strwinerror
+
+   The gz_strwinerror function does not change the current setting of
+   GetLastError. */
+char ZLIB_INTERNAL *gz_strwinerror(DWORD error) {
+    static char buf[1024];
+
+    wchar_t *msgbuf;
+    DWORD lasterr = GetLastError();
+    DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
+        | FORMAT_MESSAGE_ALLOCATE_BUFFER,
+        NULL,
+        error,
+        0, /* Default language */
+        (LPVOID)&msgbuf,
+        0,
+        NULL);
+    if (chars != 0) {
+        /* If there is an \r\n appended, zap it.  */
+        if (chars >= 2
+            && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
+            chars -= 2;
+            msgbuf[chars] = 0;
+        }
+
+        if (chars > sizeof (buf) - 1) {
+            chars = sizeof (buf) - 1;
+            msgbuf[chars] = 0;
+        }
+
+        wcstombs(buf, msgbuf, chars + 1);
+        LocalFree(msgbuf);
+    }
+    else {
+        sprintf(buf, "unknown win32 error (%ld)", error);
+    }
+
+    SetLastError(lasterr);
+    return buf;
+}
+
+#endif /* UNDER_CE */
+
+/* Reset gzip file state */
+local void gz_reset(gz_statep state) {
+    state->x.have = 0;              /* no output data available */
+    if (state->mode == GZ_READ) {   /* for reading ... */
+        state->eof = 0;             /* not at end of file */
+        state->past = 0;            /* have not read past end yet */
+        state->how = LOOK;          /* look for gzip header */
+    }
+    else                            /* for writing ... */
+        state->reset = 0;           /* no deflateReset pending */
+    state->seek = 0;                /* no seek request pending */
+    gz_error(state, Z_OK, NULL);    /* clear error */
+    state->x.pos = 0;               /* no uncompressed data yet */
+    state->strm.avail_in = 0;       /* no input data yet */
+}
+
+/* Open a gzip file either by name or file descriptor. */
+local gzFile gz_open(const void *path, int fd, const char *mode) {
+    gz_statep state;
+    z_size_t len;
+    int oflag;
+#ifdef O_CLOEXEC
+    int cloexec = 0;
+#endif
+#ifdef O_EXCL
+    int exclusive = 0;
+#endif
+
+    /* check input */
+    if (path == NULL)
+        return NULL;
+
+    /* allocate gzFile structure to return */
+    state = (gz_statep)malloc(sizeof(gz_state));
+    if (state == NULL)
+        return NULL;
+    state->size = 0;            /* no buffers allocated yet */
+    state->want = GZBUFSIZE;    /* requested buffer size */
+    state->msg = NULL;          /* no error message yet */
+
+    /* interpret mode */
+    state->mode = GZ_NONE;
+    state->level = Z_DEFAULT_COMPRESSION;
+    state->strategy = Z_DEFAULT_STRATEGY;
+    state->direct = 0;
+    while (*mode) {
+        if (*mode >= '0' && *mode <= '9')
+            state->level = *mode - '0';
+        else
+            switch (*mode) {
+            case 'r':
+                state->mode = GZ_READ;
+                break;
+#ifndef NO_GZCOMPRESS
+            case 'w':
+                state->mode = GZ_WRITE;
+                break;
+            case 'a':
+                state->mode = GZ_APPEND;
+                break;
+#endif
+            case '+':       /* can't read and write at the same time */
+                free(state);
+                return NULL;
+            case 'b':       /* ignore -- will request binary anyway */
+                break;
+#ifdef O_CLOEXEC
+            case 'e':
+                cloexec = 1;
+                break;
+#endif
+#ifdef O_EXCL
+            case 'x':
+                exclusive = 1;
+                break;
+#endif
+            case 'f':
+                state->strategy = Z_FILTERED;
+                break;
+            case 'h':
+                state->strategy = Z_HUFFMAN_ONLY;
+                break;
+            case 'R':
+                state->strategy = Z_RLE;
+                break;
+            case 'F':
+                state->strategy = Z_FIXED;
+                break;
+            case 'T':
+                state->direct = 1;
+                break;
+            default:        /* could consider as an error, but just ignore */
+                ;
+            }
+        mode++;
+    }
+
+    /* must provide an "r", "w", or "a" */
+    if (state->mode == GZ_NONE) {
+        free(state);
+        return NULL;
+    }
+
+    /* can't force transparent read */
+    if (state->mode == GZ_READ) {
+        if (state->direct) {
+            free(state);
+            return NULL;
+        }
+        state->direct = 1;      /* for empty file */
+    }
+
+    /* save the path name for error messages */
+#ifdef WIDECHAR
+    if (fd == -2) {
+        len = wcstombs(NULL, path, 0);
+        if (len == (z_size_t)-1)
+            len = 0;
+    }
+    else
+#endif
+        len = strlen((const char *)path);
+    state->path = (char *)malloc(len + 1);
+    if (state->path == NULL) {
+        free(state);
+        return NULL;
+    }
+#ifdef WIDECHAR
+    if (fd == -2)
+        if (len)
+            wcstombs(state->path, path, len + 1);
+        else
+            *(state->path) = 0;
+    else
+#endif
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+        (void)snprintf(state->path, len + 1, "%s", (const char *)path);
+#else
+        strcpy(state->path, path);
+#endif
+
+    /* compute the flags for open() */
+    oflag =
+#ifdef O_LARGEFILE
+        O_LARGEFILE |
+#endif
+#ifdef O_BINARY
+        O_BINARY |
+#endif
+#ifdef O_CLOEXEC
+        (cloexec ? O_CLOEXEC : 0) |
+#endif
+        (state->mode == GZ_READ ?
+         O_RDONLY :
+         (O_WRONLY | O_CREAT |
+#ifdef O_EXCL
+          (exclusive ? O_EXCL : 0) |
+#endif
+          (state->mode == GZ_WRITE ?
+           O_TRUNC :
+           O_APPEND)));
+
+    /* open the file with the appropriate flags (or just use fd) */
+    state->fd = fd > -1 ? fd : (
+#ifdef WIDECHAR
+        fd == -2 ? _wopen(path, oflag, 0666) :
+#endif
+        OPEN((const char *)path, oflag, 0666));
+    if (state->fd == -1) {
+        free(state->path);
+        free(state);
+        return NULL;
+    }
+    if (state->mode == GZ_APPEND) {
+        LSEEK(state->fd, 0, SEEK_END);  /* so gzoffset() is correct */
+        state->mode = GZ_WRITE;         /* simplify later checks */
+    }
+
+    /* save the current position for rewinding (only if reading) */
+    if (state->mode == GZ_READ) {
+        state->start = LSEEK(state->fd, 0, SEEK_CUR);
+        if (state->start == -1) state->start = 0;
+    }
+
+    /* initialize stream */
+    gz_reset(state);
+
+    /* return stream */
+    return (gzFile)state;
+}
+
+/* -- see zlib.h -- */
+gzFile ZEXPORT gzopen(const char *path, const char *mode) {
+    return gz_open(path, -1, mode);
+}
+
+/* -- see zlib.h -- */
+gzFile ZEXPORT gzopen64(const char *path, const char *mode) {
+    return gz_open(path, -1, mode);
+}
+
+/* -- see zlib.h -- */
+gzFile ZEXPORT gzdopen(int fd, const char *mode) {
+    char *path;         /* identifier for error messages */
+    gzFile gz;
+
+    if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
+        return NULL;
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    (void)snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd);
+#else
+    sprintf(path, "<fd:%d>", fd);   /* for debugging */
+#endif
+    gz = gz_open(path, fd, mode);
+    free(path);
+    return gz;
+}
+
+/* -- see zlib.h -- */
+#ifdef WIDECHAR
+gzFile ZEXPORT gzopen_w(const wchar_t *path, const char *mode) {
+    return gz_open(path, -2, mode);
+}
+#endif
+
+/* -- see zlib.h -- */
+int ZEXPORT gzbuffer(gzFile file, unsigned size) {
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* make sure we haven't already allocated memory */
+    if (state->size != 0)
+        return -1;
+
+    /* check and set requested size */
+    if ((size << 1) < size)
+        return -1;              /* need to be able to double it */
+    if (size < 8)
+        size = 8;               /* needed to behave well with flushing */
+    state->want = size;
+    return 0;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzrewind(gzFile file) {
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no error */
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* back up and start over */
+    if (LSEEK(state->fd, state->start, SEEK_SET) == -1)
+        return -1;
+    gz_reset(state);
+    return 0;
+}
+
+/* -- see zlib.h -- */
+z_off64_t ZEXPORT gzseek64(gzFile file, z_off64_t offset, int whence) {
+    unsigned n;
+    z_off64_t ret;
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* check that there's no error */
+    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
+        return -1;
+
+    /* can only seek from start or relative to current position */
+    if (whence != SEEK_SET && whence != SEEK_CUR)
+        return -1;
+
+    /* normalize offset to a SEEK_CUR specification */
+    if (whence == SEEK_SET)
+        offset -= state->x.pos;
+    else if (state->seek)
+        offset += state->skip;
+    state->seek = 0;
+
+    /* if within raw area while reading, just go there */
+    if (state->mode == GZ_READ && state->how == COPY &&
+            state->x.pos + offset >= 0) {
+        ret = LSEEK(state->fd, offset - (z_off64_t)state->x.have, SEEK_CUR);
+        if (ret == -1)
+            return -1;
+        state->x.have = 0;
+        state->eof = 0;
+        state->past = 0;
+        state->seek = 0;
+        gz_error(state, Z_OK, NULL);
+        state->strm.avail_in = 0;
+        state->x.pos += offset;
+        return state->x.pos;
+    }
+
+    /* calculate skip amount, rewinding if needed for back seek when reading */
+    if (offset < 0) {
+        if (state->mode != GZ_READ)         /* writing -- can't go backwards */
+            return -1;
+        offset += state->x.pos;
+        if (offset < 0)                     /* before start of file! */
+            return -1;
+        if (gzrewind(file) == -1)           /* rewind, then skip to offset */
+            return -1;
+    }
+
+    /* if reading, skip what's in output buffer (one less gzgetc() check) */
+    if (state->mode == GZ_READ) {
+        n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ?
+            (unsigned)offset : state->x.have;
+        state->x.have -= n;
+        state->x.next += n;
+        state->x.pos += n;
+        offset -= n;
+    }
+
+    /* request skip (if not zero) */
+    if (offset) {
+        state->seek = 1;
+        state->skip = offset;
+    }
+    return state->x.pos + offset;
+}
+
+/* -- see zlib.h -- */
+z_off_t ZEXPORT gzseek(gzFile file, z_off_t offset, int whence) {
+    z_off64_t ret;
+
+    ret = gzseek64(file, (z_off64_t)offset, whence);
+    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
+}
+
+/* -- see zlib.h -- */
+z_off64_t ZEXPORT gztell64(gzFile file) {
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* return position */
+    return state->x.pos + (state->seek ? state->skip : 0);
+}
+
+/* -- see zlib.h -- */
+z_off_t ZEXPORT gztell(gzFile file) {
+    z_off64_t ret;
+
+    ret = gztell64(file);
+    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
+}
+
+/* -- see zlib.h -- */
+z_off64_t ZEXPORT gzoffset64(gzFile file) {
+    z_off64_t offset;
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return -1;
+
+    /* compute and return effective offset in file */
+    offset = LSEEK(state->fd, 0, SEEK_CUR);
+    if (offset == -1)
+        return -1;
+    if (state->mode == GZ_READ)             /* reading */
+        offset -= state->strm.avail_in;     /* don't count buffered input */
+    return offset;
+}
+
+/* -- see zlib.h -- */
+z_off_t ZEXPORT gzoffset(gzFile file) {
+    z_off64_t ret;
+
+    ret = gzoffset64(file);
+    return ret == (z_off_t)ret ? (z_off_t)ret : -1;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzeof(gzFile file) {
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return 0;
+
+    /* return end-of-file state */
+    return state->mode == GZ_READ ? state->past : 0;
+}
+
+/* -- see zlib.h -- */
+const char * ZEXPORT gzerror(gzFile file, int *errnum) {
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return NULL;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return NULL;
+
+    /* return error information */
+    if (errnum != NULL)
+        *errnum = state->err;
+    return state->err == Z_MEM_ERROR ? "out of memory" :
+                                       (state->msg == NULL ? "" : state->msg);
+}
+
+/* -- see zlib.h -- */
+void ZEXPORT gzclearerr(gzFile file) {
+    gz_statep state;
+
+    /* get internal structure and check integrity */
+    if (file == NULL)
+        return;
+    state = (gz_statep)file;
+    if (state->mode != GZ_READ && state->mode != GZ_WRITE)
+        return;
+
+    /* clear error and end-of-file */
+    if (state->mode == GZ_READ) {
+        state->eof = 0;
+        state->past = 0;
+    }
+    gz_error(state, Z_OK, NULL);
+}
+
+/* Create an error message in allocated memory and set state->err and
+   state->msg accordingly.  Free any previous error message already there.  Do
+   not try to free or allocate space if the error is Z_MEM_ERROR (out of
+   memory).  Simply save the error message as a static string.  If there is an
+   allocation failure constructing the error message, then convert the error to
+   out of memory. */
+void ZLIB_INTERNAL gz_error(gz_statep state, int err, const char *msg) {
+    /* free previously allocated message and clear */
+    if (state->msg != NULL) {
+        if (state->err != Z_MEM_ERROR)
+            free(state->msg);
+        state->msg = NULL;
+    }
+
+    /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */
+    if (err != Z_OK && err != Z_BUF_ERROR)
+        state->x.have = 0;
+
+    /* set error code, and if no message, then done */
+    state->err = err;
+    if (msg == NULL)
+        return;
+
+    /* for an out of memory error, return literal string when requested */
+    if (err == Z_MEM_ERROR)
+        return;
+
+    /* construct error message with path */
+    if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
+            NULL) {
+        state->err = Z_MEM_ERROR;
+        return;
+    }
+#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
+    (void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
+                   "%s%s%s", state->path, ": ", msg);
+#else
+    strcpy(state->msg, state->path);
+    strcat(state->msg, ": ");
+    strcat(state->msg, msg);
+#endif
+}
+
+#ifndef INT_MAX
+/* portably return maximum value for an int (when limits.h presumed not
+   available) -- we need to do this to cover cases where 2's complement not
+   used, since C standard permits 1's complement and sign-bit representations,
+   otherwise we could just use ((unsigned)-1) >> 1 */
+unsigned ZLIB_INTERNAL gz_intmax(void) {
+    unsigned p, q;
+
+    p = 1;
+    do {
+        q = p;
+        p <<= 1;
+        p++;
+    } while (p > q);
+    return q >> 1;
+}
+#endif

deps/v8/third_party/zlib/gzread.c

@@ -0,0 +1,602 @@
+/* gzread.c -- zlib functions for reading gzip files
+ * Copyright (C) 2004-2017 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+/* Use read() to load a buffer -- return -1 on error, otherwise 0.  Read from
+   state->fd, and update state->eof, state->err, and state->msg as appropriate.
+   This function needs to loop on read(), since read() is not guaranteed to
+   read the number of bytes requested, depending on the type of descriptor. */
+local int gz_load(gz_statep state, unsigned char *buf, unsigned len,
+                  unsigned *have) {
+    int ret;
+    unsigned get, max = ((unsigned)-1 >> 2) + 1;
+
+    *have = 0;
+    do {
+        get = len - *have;
+        if (get > max)
+            get = max;
+        ret = read(state->fd, buf + *have, get);
+        if (ret <= 0)
+            break;
+        *have += (unsigned)ret;
+    } while (*have < len);
+    if (ret < 0) {
+        gz_error(state, Z_ERRNO, zstrerror());
+        return -1;
+    }
+    if (ret == 0)
+        state->eof = 1;
+    return 0;
+}
+
+/* Load up input buffer and set eof flag if last data loaded -- return -1 on
+   error, 0 otherwise.  Note that the eof flag is set when the end of the input
+   file is reached, even though there may be unused data in the buffer.  Once
+   that data has been used, no more attempts will be made to read the file.
+   If strm->avail_in != 0, then the current data is moved to the beginning of
+   the input buffer, and then the remainder of the buffer is loaded with the
+   available data from the input file. */
+local int gz_avail(gz_statep state) {
+    unsigned got;
+    z_streamp strm = &(state->strm);
+
+    if (state->err != Z_OK && state->err != Z_BUF_ERROR)
+        return -1;
+    if (state->eof == 0) {
+        if (strm->avail_in) {       /* copy what's there to the start */
+            unsigned char *p = state->in;
+            unsigned const char *q = strm->next_in;
+            unsigned n = strm->avail_in;
+            do {
+                *p++ = *q++;
+            } while (--n);
+        }
+        if (gz_load(state, state->in + strm->avail_in,
+                    state->size - strm->avail_in, &got) == -1)
+            return -1;
+        strm->avail_in += got;
+        strm->next_in = state->in;
+    }
+    return 0;
+}
+
+/* Look for gzip header, set up for inflate or copy.  state->x.have must be 0.
+   If this is the first time in, allocate required memory.  state->how will be
+   left unchanged if there is no more input data available, will be set to COPY
+   if there is no gzip header and direct copying will be performed, or it will
+   be set to GZIP for decompression.  If direct copying, then leftover input
+   data from the input buffer will be copied to the output buffer.  In that
+   case, all further file reads will be directly to either the output buffer or
+   a user buffer.  If decompressing, the inflate state will be initialized.
+   gz_look() will return 0 on success or -1 on failure. */
+local int gz_look(gz_statep state) {
+    z_streamp strm = &(state->strm);
+
+    /* allocate read buffers and inflate memory */
+    if (state->size == 0) {
+        /* allocate buffers */
+        state->in = (unsigned char *)malloc(state->want);
+        state->out = (unsigned char *)malloc(state->want << 1);
+        if (state->in == NULL || state->out == NULL) {
+            free(state->out);
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+        state->size = state->want;
+
+        /* allocate inflate memory */
+        state->strm.zalloc = Z_NULL;
+        state->strm.zfree = Z_NULL;
+        state->strm.opaque = Z_NULL;
+        state->strm.avail_in = 0;
+        state->strm.next_in = Z_NULL;
+        if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) {    /* gunzip */
+            free(state->out);
+            free(state->in);
+            state->size = 0;
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+    }
+
+    /* get at least the magic bytes in the input buffer */
+    if (strm->avail_in < 2) {
+        if (gz_avail(state) == -1)
+            return -1;
+        if (strm->avail_in == 0)
+            return 0;
+    }
+
+    /* look for gzip magic bytes -- if there, do gzip decoding (note: there is
+       a logical dilemma here when considering the case of a partially written
+       gzip file, to wit, if a single 31 byte is written, then we cannot tell
+       whether this is a single-byte file, or just a partially written gzip
+       file -- for here we assume that if a gzip file is being written, then
+       the header will be written in a single operation, so that reading a
+       single byte is sufficient indication that it is not a gzip file) */
+    if (strm->avail_in > 1 &&
+            strm->next_in[0] == 31 && strm->next_in[1] == 139) {
+        inflateReset(strm);
+        state->how = GZIP;
+        state->direct = 0;
+        return 0;
+    }
+
+    /* no gzip header -- if we were decoding gzip before, then this is trailing
+       garbage.  Ignore the trailing garbage and finish. */
+    if (state->direct == 0) {
+        strm->avail_in = 0;
+        state->eof = 1;
+        state->x.have = 0;
+        return 0;
+    }
+
+    /* doing raw i/o, copy any leftover input to output -- this assumes that
+       the output buffer is larger than the input buffer, which also assures
+       space for gzungetc() */
+    state->x.next = state->out;
+    memcpy(state->x.next, strm->next_in, strm->avail_in);
+    state->x.have = strm->avail_in;
+    strm->avail_in = 0;
+    state->how = COPY;
+    state->direct = 1;
+    return 0;
+}
+
+/* Decompress from input to the provided next_out and avail_out in the state.
+   On return, state->x.have and state->x.next point to the just decompressed
+   data.  If the gzip stream completes, state->how is reset to LOOK to look for
+   the next gzip stream or raw data, once state->x.have is depleted.  Returns 0
+   on success, -1 on failure. */
+local int gz_decomp(gz_statep state) {
+    int ret = Z_OK;
+    unsigned had;
+    z_streamp strm = &(state->strm);
+
+    /* fill output buffer up to end of deflate stream */
+    had = strm->avail_out;
+    do {
+        /* get more input for inflate() */
+        if (strm->avail_in == 0 && gz_avail(state) == -1)
+            return -1;
+        if (strm->avail_in == 0) {
+            gz_error(state, Z_BUF_ERROR, "unexpected end of file");
+            break;
+        }
+
+        /* decompress and handle errors */
+        ret = inflate(strm, Z_NO_FLUSH);
+        if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {
+            gz_error(state, Z_STREAM_ERROR,
+                     "internal error: inflate stream corrupt");
+            return -1;
+        }
+        if (ret == Z_MEM_ERROR) {
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+        if (ret == Z_DATA_ERROR) {              /* deflate stream invalid */
+            gz_error(state, Z_DATA_ERROR,
+                     strm->msg == NULL ? "compressed data error" : strm->msg);
+            return -1;
+        }
+    } while (strm->avail_out && ret != Z_STREAM_END);
+
+    /* update available output */
+    state->x.have = had - strm->avail_out;
+    state->x.next = strm->next_out - state->x.have;
+
+    /* if the gzip stream completed successfully, look for another */
+    if (ret == Z_STREAM_END)
+        state->how = LOOK;
+
+    /* good decompression */
+    return 0;
+}
+
+/* Fetch data and put it in the output buffer.  Assumes state->x.have is 0.
+   Data is either copied from the input file or decompressed from the input
+   file depending on state->how.  If state->how is LOOK, then a gzip header is
+   looked for to determine whether to copy or decompress.  Returns -1 on error,
+   otherwise 0.  gz_fetch() will leave state->how as COPY or GZIP unless the
+   end of the input file has been reached and all data has been processed.  */
+local int gz_fetch(gz_statep state) {
+    z_streamp strm = &(state->strm);
+
+    do {
+        switch(state->how) {
+        case LOOK:      /* -> LOOK, COPY (only if never GZIP), or GZIP */
+            if (gz_look(state) == -1)
+                return -1;
+            if (state->how == LOOK)
+                return 0;
+            break;
+        case COPY:      /* -> COPY */
+            if (gz_load(state, state->out, state->size << 1, &(state->x.have))
+                    == -1)
+                return -1;
+            state->x.next = state->out;
+            return 0;
+        case GZIP:      /* -> GZIP or LOOK (if end of gzip stream) */
+            strm->avail_out = state->size << 1;
+            strm->next_out = state->out;
+            if (gz_decomp(state) == -1)
+                return -1;
+        }
+    } while (state->x.have == 0 && (!state->eof || strm->avail_in));
+    return 0;
+}
+
+/* Skip len uncompressed bytes of output.  Return -1 on error, 0 on success. */
+local int gz_skip(gz_statep state, z_off64_t len) {
+    unsigned n;
+
+    /* skip over len bytes or reach end-of-file, whichever comes first */
+    while (len)
+        /* skip over whatever is in output buffer */
+        if (state->x.have) {
+            n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ?
+                (unsigned)len : state->x.have;
+            state->x.have -= n;
+            state->x.next += n;
+            state->x.pos += n;
+            len -= n;
+        }
+
+        /* output buffer empty -- return if we're at the end of the input */
+        else if (state->eof && state->strm.avail_in == 0)
+            break;
+
+        /* need more data to skip -- load up output buffer */
+        else {
+            /* get more output, looking for header if required */
+            if (gz_fetch(state) == -1)
+                return -1;
+        }
+    return 0;
+}
+
+/* Read len bytes into buf from file, or less than len up to the end of the
+   input.  Return the number of bytes read.  If zero is returned, either the
+   end of file was reached, or there was an error.  state->err must be
+   consulted in that case to determine which. */
+local z_size_t gz_read(gz_statep state, voidp buf, z_size_t len) {
+    z_size_t got;
+    unsigned n;
+
+    /* if len is zero, avoid unnecessary operations */
+    if (len == 0)
+        return 0;
+
+    /* process a skip request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_skip(state, state->skip) == -1)
+            return 0;
+    }
+
+    /* get len bytes to buf, or less than len if at the end */
+    got = 0;
+    do {
+        /* set n to the maximum amount of len that fits in an unsigned int */
+        n = (unsigned)-1;
+        if (n > len)
+            n = (unsigned)len;
+
+        /* first just try copying data from the output buffer */
+        if (state->x.have) {
+            if (state->x.have < n)
+                n = state->x.have;
+            memcpy(buf, state->x.next, n);
+            state->x.next += n;
+            state->x.have -= n;
+        }
+
+        /* output buffer empty -- return if we're at the end of the input */
+        else if (state->eof && state->strm.avail_in == 0) {
+            state->past = 1;        /* tried to read past end */
+            break;
+        }
+
+        /* need output data -- for small len or new stream load up our output
+           buffer */
+        else if (state->how == LOOK || n < (state->size << 1)) {
+            /* get more output, looking for header if required */
+            if (gz_fetch(state) == -1)
+                return 0;
+            continue;       /* no progress yet -- go back to copy above */
+            /* the copy above assures that we will leave with space in the
+               output buffer, allowing at least one gzungetc() to succeed */
+        }
+
+        /* large len -- read directly into user buffer */
+        else if (state->how == COPY) {      /* read directly */
+            if (gz_load(state, (unsigned char *)buf, n, &n) == -1)
+                return 0;
+        }
+
+        /* large len -- decompress directly into user buffer */
+        else {  /* state->how == GZIP */
+            state->strm.avail_out = n;
+            state->strm.next_out = (unsigned char *)buf;
+            if (gz_decomp(state) == -1)
+                return 0;
+            n = state->x.have;
+            state->x.have = 0;
+        }
+
+        /* update progress */
+        len -= n;
+        buf = (char *)buf + n;
+        got += n;
+        state->x.pos += n;
+    } while (len);
+
+    /* return number of bytes read into user buffer */
+    return got;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzread(gzFile file, voidp buf, unsigned len) {
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* since an int is returned, make sure len fits in one, otherwise return
+       with an error (this avoids a flaw in the interface) */
+    if ((int)len < 0) {
+        gz_error(state, Z_STREAM_ERROR, "request does not fit in an int");
+        return -1;
+    }
+
+    /* read len or fewer bytes to buf */
+    len = (unsigned)gz_read(state, buf, len);
+
+    /* check for an error */
+    if (len == 0 && state->err != Z_OK && state->err != Z_BUF_ERROR)
+        return -1;
+
+    /* return the number of bytes read (this is assured to fit in an int) */
+    return (int)len;
+}
+
+/* -- see zlib.h -- */
+z_size_t ZEXPORT gzfread(voidp buf, z_size_t size, z_size_t nitems, gzFile file) {
+    z_size_t len;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+            (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return 0;
+
+    /* compute bytes to read -- error on overflow */
+    len = nitems * size;
+    if (size && len / size != nitems) {
+        gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
+        return 0;
+    }
+
+    /* read len or fewer bytes to buf, return the number of full items read */
+    return len ? gz_read(state, buf, len) / size : 0;
+}
+
+/* -- see zlib.h -- */
+#ifdef Z_PREFIX_SET
+#  undef z_gzgetc
+#else
+#  undef gzgetc
+#  ifdef Z_CR_PREFIX_SET
+#    define gzgetc Cr_z_gzgetc
+#  endif
+#endif
+
+int ZEXPORT gzgetc(gzFile file) {
+    unsigned char buf[1];
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* try output buffer (no need to check for skip request) */
+    if (state->x.have) {
+        state->x.have--;
+        state->x.pos++;
+        return *(state->x.next)++;
+    }
+
+    /* nothing there -- try gz_read() */
+    return gz_read(state, buf, 1) < 1 ? -1 : buf[0];
+}
+
+int ZEXPORT gzgetc_(gzFile file) {
+    return gzgetc(file);
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzungetc(int c, gzFile file) {
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return -1;
+
+    /* process a skip request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_skip(state, state->skip) == -1)
+            return -1;
+    }
+
+    /* can't push EOF */
+    if (c < 0)
+        return -1;
+
+    /* if output buffer empty, put byte at end (allows more pushing) */
+    if (state->x.have == 0) {
+        state->x.have = 1;
+        state->x.next = state->out + (state->size << 1) - 1;
+        state->x.next[0] = (unsigned char)c;
+        state->x.pos--;
+        state->past = 0;
+        return c;
+    }
+
+    /* if no room, give up (must have already done a gzungetc()) */
+    if (state->x.have == (state->size << 1)) {
+        gz_error(state, Z_DATA_ERROR, "out of room to push characters");
+        return -1;
+    }
+
+    /* slide output data if needed and insert byte before existing data */
+    if (state->x.next == state->out) {
+        unsigned char *src = state->out + state->x.have;
+        unsigned char *dest = state->out + (state->size << 1);
+        while (src > state->out)
+            *--dest = *--src;
+        state->x.next = dest;
+    }
+    state->x.have++;
+    state->x.next--;
+    state->x.next[0] = (unsigned char)c;
+    state->x.pos--;
+    state->past = 0;
+    return c;
+}
+
+/* -- see zlib.h -- */
+char * ZEXPORT gzgets(gzFile file, char *buf, int len) {
+    unsigned left, n;
+    char *str;
+    unsigned char *eol;
+    gz_statep state;
+
+    /* check parameters and get internal structure */
+    if (file == NULL || buf == NULL || len < 1)
+        return NULL;
+    state = (gz_statep)file;
+
+    /* check that we're reading and that there's no (serious) error */
+    if (state->mode != GZ_READ ||
+        (state->err != Z_OK && state->err != Z_BUF_ERROR))
+        return NULL;
+
+    /* process a skip request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_skip(state, state->skip) == -1)
+            return NULL;
+    }
+
+    /* copy output bytes up to new line or len - 1, whichever comes first --
+       append a terminating zero to the string (we don't check for a zero in
+       the contents, let the user worry about that) */
+    str = buf;
+    left = (unsigned)len - 1;
+    if (left) do {
+        /* assure that something is in the output buffer */
+        if (state->x.have == 0 && gz_fetch(state) == -1)
+            return NULL;                /* error */
+        if (state->x.have == 0) {       /* end of file */
+            state->past = 1;            /* read past end */
+            break;                      /* return what we have */
+        }
+
+        /* look for end-of-line in current output buffer */
+        n = state->x.have > left ? left : state->x.have;
+        eol = (unsigned char *)memchr(state->x.next, '\n', n);
+        if (eol != NULL)
+            n = (unsigned)(eol - state->x.next) + 1;
+
+        /* copy through end-of-line, or remainder if not found */
+        memcpy(buf, state->x.next, n);
+        state->x.have -= n;
+        state->x.next += n;
+        state->x.pos += n;
+        left -= n;
+        buf += n;
+    } while (left && eol == NULL);
+
+    /* return terminated string, or if nothing, end of file */
+    if (buf == str)
+        return NULL;
+    buf[0] = 0;
+    return str;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzdirect(gzFile file) {
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* if the state is not known, but we can find out, then do so (this is
+       mainly for right after a gzopen() or gzdopen()) */
+    if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
+        (void)gz_look(state);
+
+    /* return 1 if transparent, 0 if processing a gzip stream */
+    return state->direct;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzclose_r(gzFile file) {
+    int ret, err;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    /* check that we're reading */
+    if (state->mode != GZ_READ)
+        return Z_STREAM_ERROR;
+
+    /* free memory and close file */
+    if (state->size) {
+        inflateEnd(&(state->strm));
+        free(state->out);
+        free(state->in);
+    }
+    err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK;
+    gz_error(state, Z_OK, NULL);
+    free(state->path);
+    ret = close(state->fd);
+    free(state);
+    return ret ? Z_ERRNO : err;
+}

deps/v8/third_party/zlib/gzwrite.c

@@ -0,0 +1,631 @@
+/* gzwrite.c -- zlib functions for writing gzip files
+ * Copyright (C) 2004-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "gzguts.h"
+
+/* Initialize state for writing a gzip file.  Mark initialization by setting
+   state->size to non-zero.  Return -1 on a memory allocation failure, or 0 on
+   success. */
+local int gz_init(gz_statep state) {
+    int ret;
+    z_streamp strm = &(state->strm);
+
+    /* allocate input buffer (double size for gzprintf) */
+    state->in = (unsigned char *)malloc(state->want << 1);
+    if (state->in == NULL) {
+        gz_error(state, Z_MEM_ERROR, "out of memory");
+        return -1;
+    }
+
+    /* only need output buffer and deflate state if compressing */
+    if (!state->direct) {
+        /* allocate output buffer */
+        state->out = (unsigned char *)malloc(state->want);
+        if (state->out == NULL) {
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+
+        /* allocate deflate memory, set up for gzip compression */
+        strm->zalloc = Z_NULL;
+        strm->zfree = Z_NULL;
+        strm->opaque = Z_NULL;
+        ret = deflateInit2(strm, state->level, Z_DEFLATED,
+                           MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy);
+        if (ret != Z_OK) {
+            free(state->out);
+            free(state->in);
+            gz_error(state, Z_MEM_ERROR, "out of memory");
+            return -1;
+        }
+        strm->next_in = NULL;
+    }
+
+    /* mark state as initialized */
+    state->size = state->want;
+
+    /* initialize write buffer if compressing */
+    if (!state->direct) {
+        strm->avail_out = state->size;
+        strm->next_out = state->out;
+        state->x.next = strm->next_out;
+    }
+    return 0;
+}
+
+/* Compress whatever is at avail_in and next_in and write to the output file.
+   Return -1 if there is an error writing to the output file or if gz_init()
+   fails to allocate memory, otherwise 0.  flush is assumed to be a valid
+   deflate() flush value.  If flush is Z_FINISH, then the deflate() state is
+   reset to start a new gzip stream.  If gz->direct is true, then simply write
+   to the output file without compressing, and ignore flush. */
+local int gz_comp(gz_statep state, int flush) {
+    int ret, writ;
+    unsigned have, put, max = ((unsigned)-1 >> 2) + 1;
+    z_streamp strm = &(state->strm);
+
+    /* allocate memory if this is the first time through */
+    if (state->size == 0 && gz_init(state) == -1)
+        return -1;
+
+    /* write directly if requested */
+    if (state->direct) {
+        while (strm->avail_in) {
+            put = strm->avail_in > max ? max : strm->avail_in;
+            writ = write(state->fd, strm->next_in, put);
+            if (writ < 0) {
+                gz_error(state, Z_ERRNO, zstrerror());
+                return -1;
+            }
+            strm->avail_in -= (unsigned)writ;
+            strm->next_in += writ;
+        }
+        return 0;
+    }
+
+    /* check for a pending reset */
+    if (state->reset) {
+        /* don't start a new gzip member unless there is data to write */
+        if (strm->avail_in == 0)
+            return 0;
+        deflateReset(strm);
+        state->reset = 0;
+    }
+
+    /* run deflate() on provided input until it produces no more output */
+    ret = Z_OK;
+    do {
+        /* write out current buffer contents if full, or if flushing, but if
+           doing Z_FINISH then don't write until we get to Z_STREAM_END */
+        if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
+            (flush != Z_FINISH || ret == Z_STREAM_END))) {
+            while (strm->next_out > state->x.next) {
+                put = strm->next_out - state->x.next > (int)max ? max :
+                      (unsigned)(strm->next_out - state->x.next);
+                writ = write(state->fd, state->x.next, put);
+                if (writ < 0) {
+                    gz_error(state, Z_ERRNO, zstrerror());
+                    return -1;
+                }
+                state->x.next += writ;
+            }
+            if (strm->avail_out == 0) {
+                strm->avail_out = state->size;
+                strm->next_out = state->out;
+                state->x.next = state->out;
+            }
+        }
+
+        /* compress */
+        have = strm->avail_out;
+        ret = deflate(strm, flush);
+        if (ret == Z_STREAM_ERROR) {
+            gz_error(state, Z_STREAM_ERROR,
+                      "internal error: deflate stream corrupt");
+            return -1;
+        }
+        have -= strm->avail_out;
+    } while (have);
+
+    /* if that completed a deflate stream, allow another to start */
+    if (flush == Z_FINISH)
+        state->reset = 1;
+
+    /* all done, no errors */
+    return 0;
+}
+
+/* Compress len zeros to output.  Return -1 on a write error or memory
+   allocation failure by gz_comp(), or 0 on success. */
+local int gz_zero(gz_statep state, z_off64_t len) {
+    int first;
+    unsigned n;
+    z_streamp strm = &(state->strm);
+
+    /* consume whatever's left in the input buffer */
+    if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
+        return -1;
+
+    /* compress len zeros (len guaranteed > 0) */
+    first = 1;
+    while (len) {
+        n = GT_OFF(state->size) || (z_off64_t)state->size > len ?
+            (unsigned)len : state->size;
+        if (first) {
+            memset(state->in, 0, n);
+            first = 0;
+        }
+        strm->avail_in = n;
+        strm->next_in = state->in;
+        state->x.pos += n;
+        if (gz_comp(state, Z_NO_FLUSH) == -1)
+            return -1;
+        len -= n;
+    }
+    return 0;
+}
+
+/* Write len bytes from buf to file.  Return the number of bytes written.  If
+   the returned value is less than len, then there was an error. */
+local z_size_t gz_write(gz_statep state, voidpc buf, z_size_t len) {
+    z_size_t put = len;
+
+    /* if len is zero, avoid unnecessary operations */
+    if (len == 0)
+        return 0;
+
+    /* allocate memory if this is the first time through */
+    if (state->size == 0 && gz_init(state) == -1)
+        return 0;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return 0;
+    }
+
+    /* for small len, copy to input buffer, otherwise compress directly */
+    if (len < state->size) {
+        /* copy to input buffer, compress when full */
+        do {
+            unsigned have, copy;
+
+            if (state->strm.avail_in == 0)
+                state->strm.next_in = state->in;
+            have = (unsigned)((state->strm.next_in + state->strm.avail_in) -
+                              state->in);
+            copy = state->size - have;
+            if (copy > len)
+                copy = (unsigned)len;
+            memcpy(state->in + have, buf, copy);
+            state->strm.avail_in += copy;
+            state->x.pos += copy;
+            buf = (const char *)buf + copy;
+            len -= copy;
+            if (len && gz_comp(state, Z_NO_FLUSH) == -1)
+                return 0;
+        } while (len);
+    }
+    else {
+        /* consume whatever's left in the input buffer */
+        if (state->strm.avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
+            return 0;
+
+        /* directly compress user buffer to file */
+        state->strm.next_in = (z_const Bytef *)buf;
+        do {
+            unsigned n = (unsigned)-1;
+            if (n > len)
+                n = (unsigned)len;
+            state->strm.avail_in = n;
+            state->x.pos += n;
+            if (gz_comp(state, Z_NO_FLUSH) == -1)
+                return 0;
+            len -= n;
+        } while (len);
+    }
+
+    /* input was all buffered or compressed */
+    return put;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzwrite(gzFile file, voidpc buf, unsigned len) {
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return 0;
+
+    /* since an int is returned, make sure len fits in one, otherwise return
+       with an error (this avoids a flaw in the interface) */
+    if ((int)len < 0) {
+        gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
+        return 0;
+    }
+
+    /* write len bytes from buf (the return value will fit in an int) */
+    return (int)gz_write(state, buf, len);
+}
+
+/* -- see zlib.h -- */
+z_size_t ZEXPORT gzfwrite(voidpc buf, z_size_t size, z_size_t nitems,
+                          gzFile file) {
+    z_size_t len;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return 0;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return 0;
+
+    /* compute bytes to read -- error on overflow */
+    len = nitems * size;
+    if (size && len / size != nitems) {
+        gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t");
+        return 0;
+    }
+
+    /* write len bytes to buf, return the number of full items written */
+    return len ? gz_write(state, buf, len) / size : 0;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzputc(gzFile file, int c) {
+    unsigned have;
+    unsigned char buf[1];
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return -1;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return -1;
+    }
+
+    /* try writing to input buffer for speed (state->size == 0 if buffer not
+       initialized) */
+    if (state->size) {
+        if (strm->avail_in == 0)
+            strm->next_in = state->in;
+        have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
+        if (have < state->size) {
+            state->in[have] = (unsigned char)c;
+            strm->avail_in++;
+            state->x.pos++;
+            return c & 0xff;
+        }
+    }
+
+    /* no room in buffer or not initialized, use gz_write() */
+    buf[0] = (unsigned char)c;
+    if (gz_write(state, buf, 1) != 1)
+        return -1;
+    return c & 0xff;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzputs(gzFile file, const char *s) {
+    z_size_t len, put;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return -1;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return -1;
+
+    /* write string */
+    len = strlen(s);
+    if ((int)len < 0 || (unsigned)len != len) {
+        gz_error(state, Z_STREAM_ERROR, "string length does not fit in int");
+        return -1;
+    }
+    put = gz_write(state, s, len);
+    return put < len ? -1 : (int)len;
+}
+
+#if defined(STDC) || defined(Z_HAVE_STDARG_H)
+#include <stdarg.h>
+
+/* -- see zlib.h -- */
+int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va) {
+    int len;
+    unsigned left;
+    char *next;
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return Z_STREAM_ERROR;
+
+    /* make sure we have some buffer space */
+    if (state->size == 0 && gz_init(state) == -1)
+        return state->err;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->err;
+    }
+
+    /* do the printf() into the input buffer, put length in len -- the input
+       buffer is double-sized just for this function, so there is guaranteed to
+       be state->size bytes available after the current contents */
+    if (strm->avail_in == 0)
+        strm->next_in = state->in;
+    next = (char *)(state->in + (strm->next_in - state->in) + strm->avail_in);
+    next[state->size - 1] = 0;
+#ifdef NO_vsnprintf
+#  ifdef HAS_vsprintf_void
+    (void)vsprintf(next, format, va);
+    for (len = 0; len < state->size; len++)
+        if (next[len] == 0) break;
+#  else
+    len = vsprintf(next, format, va);
+#  endif
+#else
+#  ifdef HAS_vsnprintf_void
+    (void)vsnprintf(next, state->size, format, va);
+    len = strlen(next);
+#  else
+    len = vsnprintf(next, state->size, format, va);
+#  endif
+#endif
+
+    /* check that printf() results fit in buffer */
+    if (len == 0 || (unsigned)len >= state->size || next[state->size - 1] != 0)
+        return 0;
+
+    /* update buffer and position, compress first half if past that */
+    strm->avail_in += (unsigned)len;
+    state->x.pos += len;
+    if (strm->avail_in >= state->size) {
+        left = strm->avail_in - state->size;
+        strm->avail_in = state->size;
+        if (gz_comp(state, Z_NO_FLUSH) == -1)
+            return state->err;
+        memmove(state->in, state->in + state->size, left);
+        strm->next_in = state->in;
+        strm->avail_in = left;
+    }
+    return len;
+}
+
+int ZEXPORTVA gzprintf(gzFile file, const char *format, ...) {
+    va_list va;
+    int ret;
+
+    va_start(va, format);
+    ret = gzvprintf(file, format, va);
+    va_end(va);
+    return ret;
+}
+
+#else /* !STDC && !Z_HAVE_STDARG_H */
+
+/* -- see zlib.h -- */
+int ZEXPORTVA gzprintf(gzFile file, const char *format, int a1, int a2, int a3,
+                       int a4, int a5, int a6, int a7, int a8, int a9, int a10,
+                       int a11, int a12, int a13, int a14, int a15, int a16,
+                       int a17, int a18, int a19, int a20) {
+    unsigned len, left;
+    char *next;
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that can really pass pointer in ints */
+    if (sizeof(int) != sizeof(void *))
+        return Z_STREAM_ERROR;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return Z_STREAM_ERROR;
+
+    /* make sure we have some buffer space */
+    if (state->size == 0 && gz_init(state) == -1)
+        return state->error;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->error;
+    }
+
+    /* do the printf() into the input buffer, put length in len -- the input
+       buffer is double-sized just for this function, so there is guaranteed to
+       be state->size bytes available after the current contents */
+    if (strm->avail_in == 0)
+        strm->next_in = state->in;
+    next = (char *)(strm->next_in + strm->avail_in);
+    next[state->size - 1] = 0;
+#ifdef NO_snprintf
+#  ifdef HAS_sprintf_void
+    sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12,
+            a13, a14, a15, a16, a17, a18, a19, a20);
+    for (len = 0; len < size; len++)
+        if (next[len] == 0)
+            break;
+#  else
+    len = sprintf(next, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11,
+                  a12, a13, a14, a15, a16, a17, a18, a19, a20);
+#  endif
+#else
+#  ifdef HAS_snprintf_void
+    snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8, a9,
+             a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+    len = strlen(next);
+#  else
+    len = snprintf(next, state->size, format, a1, a2, a3, a4, a5, a6, a7, a8,
+                   a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+#  endif
+#endif
+
+    /* check that printf() results fit in buffer */
+    if (len == 0 || len >= state->size || next[state->size - 1] != 0)
+        return 0;
+
+    /* update buffer and position, compress first half if past that */
+    strm->avail_in += len;
+    state->x.pos += len;
+    if (strm->avail_in >= state->size) {
+        left = strm->avail_in - state->size;
+        strm->avail_in = state->size;
+        if (gz_comp(state, Z_NO_FLUSH) == -1)
+            return state->err;
+        memmove(state->in, state->in + state->size, left);
+        strm->next_in = state->in;
+        strm->avail_in = left;
+    }
+    return (int)len;
+}
+
+#endif
+
+/* -- see zlib.h -- */
+int ZEXPORT gzflush(gzFile file, int flush) {
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK)
+        return Z_STREAM_ERROR;
+
+    /* check flush parameter */
+    if (flush < 0 || flush > Z_FINISH)
+        return Z_STREAM_ERROR;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->err;
+    }
+
+    /* compress remaining data with requested flush */
+    (void)gz_comp(state, flush);
+    return state->err;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzsetparams(gzFile file, int level, int strategy) {
+    gz_statep state;
+    z_streamp strm;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+    strm = &(state->strm);
+
+    /* check that we're writing and that there's no error */
+    if (state->mode != GZ_WRITE || state->err != Z_OK || state->direct)
+        return Z_STREAM_ERROR;
+
+    /* if no change is requested, then do nothing */
+    if (level == state->level && strategy == state->strategy)
+        return Z_OK;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            return state->err;
+    }
+
+    /* change compression parameters for subsequent input */
+    if (state->size) {
+        /* flush previous input with previous parameters before changing */
+        if (strm->avail_in && gz_comp(state, Z_BLOCK) == -1)
+            return state->err;
+        deflateParams(strm, level, strategy);
+    }
+    state->level = level;
+    state->strategy = strategy;
+    return Z_OK;
+}
+
+/* -- see zlib.h -- */
+int ZEXPORT gzclose_w(gzFile file) {
+    int ret = Z_OK;
+    gz_statep state;
+
+    /* get internal structure */
+    if (file == NULL)
+        return Z_STREAM_ERROR;
+    state = (gz_statep)file;
+
+    /* check that we're writing */
+    if (state->mode != GZ_WRITE)
+        return Z_STREAM_ERROR;
+
+    /* check for seek request */
+    if (state->seek) {
+        state->seek = 0;
+        if (gz_zero(state, state->skip) == -1)
+            ret = state->err;
+    }
+
+    /* flush, free memory, and close file */
+    if (gz_comp(state, Z_FINISH) == -1)
+        ret = state->err;
+    if (state->size) {
+        if (!state->direct) {
+            (void)deflateEnd(&(state->strm));
+            free(state->out);
+        }
+        free(state->in);
+    }
+    gz_error(state, Z_OK, NULL);
+    free(state->path);
+    if (close(state->fd) == -1)
+        ret = Z_ERRNO;
+    free(state);
+    return ret;
+}

deps/v8/third_party/zlib/infback.c

@@ -0,0 +1,629 @@
+/* infback.c -- inflate using a call-back interface
+ * Copyright (C) 1995-2022 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/*
+   This code is largely copied from inflate.c.  Normally either infback.o or
+   inflate.o would be linked into an application--not both.  The interface
+   with inffast.c is retained so that optimized assembler-coded versions of
+   inflate_fast() can be used with either inflate.c or infback.c.
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "inflate.h"
+#include "inffast.h"
+
+/*
+   strm provides memory allocation functions in zalloc and zfree, or
+   Z_NULL to use the library memory allocation functions.
+
+   windowBits is in the range 8..15, and window is a user-supplied
+   window and output buffer that is 2**windowBits bytes.
+ */
+int ZEXPORT inflateBackInit_(z_streamp strm, int windowBits,
+                             unsigned char FAR *window, const char *version,
+                             int stream_size) {
+    struct inflate_state FAR *state;
+
+    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
+        stream_size != (int)(sizeof(z_stream)))
+        return Z_VERSION_ERROR;
+    if (strm == Z_NULL || window == Z_NULL ||
+        windowBits < 8 || windowBits > 15)
+        return Z_STREAM_ERROR;
+    strm->msg = Z_NULL;                 /* in case we return an error */
+    if (strm->zalloc == (alloc_func)0) {
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+        strm->zalloc = zcalloc;
+        strm->opaque = (voidpf)0;
+#endif
+    }
+    if (strm->zfree == (free_func)0)
+#ifdef Z_SOLO
+        return Z_STREAM_ERROR;
+#else
+    strm->zfree = zcfree;
+#endif
+    state = (struct inflate_state FAR *)ZALLOC(strm, 1,
+                                               sizeof(struct inflate_state));
+    if (state == Z_NULL) return Z_MEM_ERROR;
+    Tracev((stderr, "inflate: allocated\n"));
+    strm->state = (struct internal_state FAR *)state;
+    state->dmax = 32768U;
+    state->wbits = (uInt)windowBits;
+    state->wsize = 1U << windowBits;
+    state->window = window;
+    state->wnext = 0;
+    state->whave = 0;
+    state->sane = 1;
+    return Z_OK;
+}
+
+/*
+   Return state with length and distance decoding tables and index sizes set to
+   fixed code decoding.  Normally this returns fixed tables from inffixed.h.
+   If BUILDFIXED is defined, then instead this routine builds the tables the
+   first time it's called, and returns those tables the first time and
+   thereafter.  This reduces the size of the code by about 2K bytes, in
+   exchange for a little execution time.  However, BUILDFIXED should not be
+   used for threaded applications, since the rewriting of the tables and virgin
+   may not be thread-safe.
+ */
+local void fixedtables(struct inflate_state FAR *state) {
+#ifdef BUILDFIXED
+    static int virgin = 1;
+    static code *lenfix, *distfix;
+    static code fixed[544];
+
+    /* build fixed huffman tables if first call (may not be thread safe) */
+    if (virgin) {
+        unsigned sym, bits;
+        static code *next;
+
+        /* literal/length table */
+        sym = 0;
+        while (sym < 144) state->lens[sym++] = 8;
+        while (sym < 256) state->lens[sym++] = 9;
+        while (sym < 280) state->lens[sym++] = 7;
+        while (sym < 288) state->lens[sym++] = 8;
+        next = fixed;
+        lenfix = next;
+        bits = 9;
+        inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
+
+        /* distance table */
+        sym = 0;
+        while (sym < 32) state->lens[sym++] = 5;
+        distfix = next;
+        bits = 5;
+        inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
+
+        /* do this just once */
+        virgin = 0;
+    }
+#else /* !BUILDFIXED */
+#   include "inffixed.h"
+#endif /* BUILDFIXED */
+    state->lencode = lenfix;
+    state->lenbits = 9;
+    state->distcode = distfix;
+    state->distbits = 5;
+}
+
+/* Macros for inflateBack(): */
+
+/* Load returned state from inflate_fast() */
+#define LOAD() \
+    do { \
+        put = strm->next_out; \
+        left = strm->avail_out; \
+        next = strm->next_in; \
+        have = strm->avail_in; \
+        hold = state->hold; \
+        bits = state->bits; \
+    } while (0)
+
+/* Set state from registers for inflate_fast() */
+#define RESTORE() \
+    do { \
+        strm->next_out = put; \
+        strm->avail_out = left; \
+        strm->next_in = next; \
+        strm->avail_in = have; \
+        state->hold = hold; \
+        state->bits = bits; \
+    } while (0)
+
+/* Clear the input bit accumulator */
+#define INITBITS() \
+    do { \
+        hold = 0; \
+        bits = 0; \
+    } while (0)
+
+/* Assure that some input is available.  If input is requested, but denied,
+   then return a Z_BUF_ERROR from inflateBack(). */
+#define PULL() \
+    do { \
+        if (have == 0) { \
+            have = in(in_desc, &next); \
+            if (have == 0) { \
+                next = Z_NULL; \
+                ret = Z_BUF_ERROR; \
+                goto inf_leave; \
+            } \
+        } \
+    } while (0)
+
+/* Get a byte of input into the bit accumulator, or return from inflateBack()
+   with an error if there is no input available. */
+#define PULLBYTE() \
+    do { \
+        PULL(); \
+        have--; \
+        hold += (unsigned long)(*next++) << bits; \
+        bits += 8; \
+    } while (0)
+
+/* Assure that there are at least n bits in the bit accumulator.  If there is
+   not enough available input to do that, then return from inflateBack() with
+   an error. */
+#define NEEDBITS(n) \
+    do { \
+        while (bits < (unsigned)(n)) \
+            PULLBYTE(); \
+    } while (0)
+
+/* Return the low n bits of the bit accumulator (n < 16) */
+#define BITS(n) \
+    ((unsigned)hold & ((1U << (n)) - 1))
+
+/* Remove n bits from the bit accumulator */
+#define DROPBITS(n) \
+    do { \
+        hold >>= (n); \
+        bits -= (unsigned)(n); \
+    } while (0)
+
+/* Remove zero to seven bits as needed to go to a byte boundary */
+#define BYTEBITS() \
+    do { \
+        hold >>= bits & 7; \
+        bits -= bits & 7; \
+    } while (0)
+
+/* Assure that some output space is available, by writing out the window
+   if it's full.  If the write fails, return from inflateBack() with a
+   Z_BUF_ERROR. */
+#define ROOM() \
+    do { \
+        if (left == 0) { \
+            put = state->window; \
+            left = state->wsize; \
+            state->whave = left; \
+            if (out(out_desc, put, left)) { \
+                ret = Z_BUF_ERROR; \
+                goto inf_leave; \
+            } \
+        } \
+    } while (0)
+
+/*
+   strm provides the memory allocation functions and window buffer on input,
+   and provides information on the unused input on return.  For Z_DATA_ERROR
+   returns, strm will also provide an error message.
+
+   in() and out() are the call-back input and output functions.  When
+   inflateBack() needs more input, it calls in().  When inflateBack() has
+   filled the window with output, or when it completes with data in the
+   window, it calls out() to write out the data.  The application must not
+   change the provided input until in() is called again or inflateBack()
+   returns.  The application must not change the window/output buffer until
+   inflateBack() returns.
+
+   in() and out() are called with a descriptor parameter provided in the
+   inflateBack() call.  This parameter can be a structure that provides the
+   information required to do the read or write, as well as accumulated
+   information on the input and output such as totals and check values.
+
+   in() should return zero on failure.  out() should return non-zero on
+   failure.  If either in() or out() fails, than inflateBack() returns a
+   Z_BUF_ERROR.  strm->next_in can be checked for Z_NULL to see whether it
+   was in() or out() that caused in the error.  Otherwise,  inflateBack()
+   returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
+   error, or Z_MEM_ERROR if it could not allocate memory for the state.
+   inflateBack() can also return Z_STREAM_ERROR if the input parameters
+   are not correct, i.e. strm is Z_NULL or the state was not initialized.
+ */
+int ZEXPORT inflateBack(z_streamp strm, in_func in, void FAR *in_desc,
+                        out_func out, void FAR *out_desc) {
+    struct inflate_state FAR *state;
+    z_const unsigned char FAR *next;    /* next input */
+    unsigned char FAR *put;     /* next output */
+    unsigned have, left;        /* available input and output */
+    unsigned long hold;         /* bit buffer */
+    unsigned bits;              /* bits in bit buffer */
+    unsigned copy;              /* number of stored or match bytes to copy */
+    unsigned char FAR *from;    /* where to copy match bytes from */
+    code here;                  /* current decoding table entry */
+    code last;                  /* parent table entry */
+    unsigned len;               /* length to copy for repeats, bits to drop */
+    int ret;                    /* return code */
+    static const unsigned short order[19] = /* permutation of code lengths */
+        {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+    /* Check that the strm exists and that the state was initialized */
+    if (strm == Z_NULL || strm->state == Z_NULL)
+        return Z_STREAM_ERROR;
+    state = (struct inflate_state FAR *)strm->state;
+
+    /* Reset the state */
+    strm->msg = Z_NULL;
+    state->mode = TYPE;
+    state->last = 0;
+    state->whave = 0;
+    next = strm->next_in;
+    have = next != Z_NULL ? strm->avail_in : 0;
+    hold = 0;
+    bits = 0;
+    put = state->window;
+    left = state->wsize;
+
+    /* Inflate until end of block marked as last */
+    for (;;)
+        switch (state->mode) {
+        case TYPE:
+            /* determine and dispatch block type */
+            if (state->last) {
+                BYTEBITS();
+                state->mode = DONE;
+                break;
+            }
+            NEEDBITS(3);
+            state->last = BITS(1);
+            DROPBITS(1);
+            switch (BITS(2)) {
+            case 0:                             /* stored block */
+                Tracev((stderr, "inflate:     stored block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = STORED;
+                break;
+            case 1:                             /* fixed block */
+                fixedtables(state);
+                Tracev((stderr, "inflate:     fixed codes block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = LEN;              /* decode codes */
+                break;
+            case 2:                             /* dynamic block */
+                Tracev((stderr, "inflate:     dynamic codes block%s\n",
+                        state->last ? " (last)" : ""));
+                state->mode = TABLE;
+                break;
+            case 3:
+                strm->msg = (char *)"invalid block type";
+                state->mode = BAD;
+            }
+            DROPBITS(2);
+            break;
+
+        case STORED:
+            /* get and verify stored block length */
+            BYTEBITS();                         /* go to byte boundary */
+            NEEDBITS(32);
+            if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
+                strm->msg = (char *)"invalid stored block lengths";
+                state->mode = BAD;
+                break;
+            }
+            state->length = (unsigned)hold & 0xffff;
+            Tracev((stderr, "inflate:       stored length %u\n",
+                    state->length));
+            INITBITS();
+
+            /* copy stored block from input to output */
+            while (state->length != 0) {
+                copy = state->length;
+                PULL();
+                ROOM();
+                if (copy > have) copy = have;
+                if (copy > left) copy = left;
+                zmemcpy(put, next, copy);
+                have -= copy;
+                next += copy;
+                left -= copy;
+                put += copy;
+                state->length -= copy;
+            }
+            Tracev((stderr, "inflate:       stored end\n"));
+            state->mode = TYPE;
+            break;
+
+        case TABLE:
+            /* get dynamic table entries descriptor */
+            NEEDBITS(14);
+            state->nlen = BITS(5) + 257;
+            DROPBITS(5);
+            state->ndist = BITS(5) + 1;
+            DROPBITS(5);
+            state->ncode = BITS(4) + 4;
+            DROPBITS(4);
+#ifndef PKZIP_BUG_WORKAROUND
+            if (state->nlen > 286 || state->ndist > 30) {
+                strm->msg = (char *)"too many length or distance symbols";
+                state->mode = BAD;
+                break;
+            }
+#endif
+            Tracev((stderr, "inflate:       table sizes ok\n"));
+
+            /* get code length code lengths (not a typo) */
+            state->have = 0;
+            while (state->have < state->ncode) {
+                NEEDBITS(3);
+                state->lens[order[state->have++]] = (unsigned short)BITS(3);
+                DROPBITS(3);
+            }
+            while (state->have < 19)
+                state->lens[order[state->have++]] = 0;
+            state->next = state->codes;
+            state->lencode = (code const FAR *)(state->next);
+            state->lenbits = 7;
+            ret = inflate_table(CODES, state->lens, 19, &(state->next),
+                                &(state->lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid code lengths set";
+                state->mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       code lengths ok\n"));
+
+            /* get length and distance code code lengths */
+            state->have = 0;
+            while (state->have < state->nlen + state->ndist) {
+                for (;;) {
+                    here = state->lencode[BITS(state->lenbits)];
+                    if ((unsigned)(here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                if (here.val < 16) {
+                    DROPBITS(here.bits);
+                    state->lens[state->have++] = here.val;
+                }
+                else {
+                    if (here.val == 16) {
+                        NEEDBITS(here.bits + 2);
+                        DROPBITS(here.bits);
+                        if (state->have == 0) {
+                            strm->msg = (char *)"invalid bit length repeat";
+                            state->mode = BAD;
+                            break;
+                        }
+                        len = (unsigned)(state->lens[state->have - 1]);
+                        copy = 3 + BITS(2);
+                        DROPBITS(2);
+                    }
+                    else if (here.val == 17) {
+                        NEEDBITS(here.bits + 3);
+                        DROPBITS(here.bits);
+                        len = 0;
+                        copy = 3 + BITS(3);
+                        DROPBITS(3);
+                    }
+                    else {
+                        NEEDBITS(here.bits + 7);
+                        DROPBITS(here.bits);
+                        len = 0;
+                        copy = 11 + BITS(7);
+                        DROPBITS(7);
+                    }
+                    if (state->have + copy > state->nlen + state->ndist) {
+                        strm->msg = (char *)"invalid bit length repeat";
+                        state->mode = BAD;
+                        break;
+                    }
+                    while (copy--)
+                        state->lens[state->have++] = (unsigned short)len;
+                }
+            }
+
+            /* handle error breaks in while */
+            if (state->mode == BAD) break;
+
+            /* check for end-of-block code (better have one) */
+            if (state->lens[256] == 0) {
+                strm->msg = (char *)"invalid code -- missing end-of-block";
+                state->mode = BAD;
+                break;
+            }
+
+            /* build code tables -- note: do not change the lenbits or distbits
+               values here (10 and 9) without reading the comments in inftrees.h
+               concerning the ENOUGH constants, which depend on those values */
+            state->next = state->codes;
+            state->lencode = (code const FAR *)(state->next);
+            state->lenbits = 10;
+            ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
+                                &(state->lenbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid literal/lengths set";
+                state->mode = BAD;
+                break;
+            }
+            state->distcode = (code const FAR *)(state->next);
+            state->distbits = 9;
+            ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
+                            &(state->next), &(state->distbits), state->work);
+            if (ret) {
+                strm->msg = (char *)"invalid distances set";
+                state->mode = BAD;
+                break;
+            }
+            Tracev((stderr, "inflate:       codes ok\n"));
+            state->mode = LEN;
+                /* fallthrough */
+
+        case LEN:
+            /* use inflate_fast() if we have enough input and output */
+            if (have >= INFLATE_FAST_MIN_INPUT &&
+                left >= INFLATE_FAST_MIN_OUTPUT) {
+                RESTORE();
+                if (state->whave < state->wsize)
+                    state->whave = state->wsize - left;
+                inflate_fast(strm, state->wsize);
+                LOAD();
+                break;
+            }
+
+            /* get a literal, length, or end-of-block code */
+            for (;;) {
+                here = state->lencode[BITS(state->lenbits)];
+                if ((unsigned)(here.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if (here.op && (here.op & 0xf0) == 0) {
+                last = here;
+                for (;;) {
+                    here = state->lencode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+            }
+            DROPBITS(here.bits);
+            state->length = (unsigned)here.val;
+
+            /* process literal */
+            if (here.op == 0) {
+                Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+                        "inflate:         literal '%c'\n" :
+                        "inflate:         literal 0x%02x\n", here.val));
+                ROOM();
+                *put++ = (unsigned char)(state->length);
+                left--;
+                state->mode = LEN;
+                break;
+            }
+
+            /* process end of block */
+            if (here.op & 32) {
+                Tracevv((stderr, "inflate:         end of block\n"));
+                state->mode = TYPE;
+                break;
+            }
+
+            /* invalid code */
+            if (here.op & 64) {
+                strm->msg = (char *)"invalid literal/length code";
+                state->mode = BAD;
+                break;
+            }
+
+            /* length code -- get extra bits, if any */
+            state->extra = (unsigned)(here.op) & 15;
+            if (state->extra != 0) {
+                NEEDBITS(state->extra);
+                state->length += BITS(state->extra);
+                DROPBITS(state->extra);
+            }
+            Tracevv((stderr, "inflate:         length %u\n", state->length));
+
+            /* get distance code */
+            for (;;) {
+                here = state->distcode[BITS(state->distbits)];
+                if ((unsigned)(here.bits) <= bits) break;
+                PULLBYTE();
+            }
+            if ((here.op & 0xf0) == 0) {
+                last = here;
+                for (;;) {
+                    here = state->distcode[last.val +
+                            (BITS(last.bits + last.op) >> last.bits)];
+                    if ((unsigned)(last.bits + here.bits) <= bits) break;
+                    PULLBYTE();
+                }
+                DROPBITS(last.bits);
+            }
+            DROPBITS(here.bits);
+            if (here.op & 64) {
+                strm->msg = (char *)"invalid distance code";
+                state->mode = BAD;
+                break;
+            }
+            state->offset = (unsigned)here.val;
+
+            /* get distance extra bits, if any */
+            state->extra = (unsigned)(here.op) & 15;
+            if (state->extra != 0) {
+                NEEDBITS(state->extra);
+                state->offset += BITS(state->extra);
+                DROPBITS(state->extra);
+            }
+            if (state->offset > state->wsize - (state->whave < state->wsize ?
+                                                left : 0)) {
+                strm->msg = (char *)"invalid distance too far back";
+                state->mode = BAD;
+                break;
+            }
+            Tracevv((stderr, "inflate:         distance %u\n", state->offset));
+
+            /* copy match from window to output */
+            do {
+                ROOM();
+                copy = state->wsize - state->offset;
+                if (copy < left) {
+                    from = put + copy;
+                    copy = left - copy;
+                }
+                else {
+                    from = put - state->offset;
+                    copy = left;
+                }
+                if (copy > state->length) copy = state->length;
+                state->length -= copy;
+                left -= copy;
+                do {
+                    *put++ = *from++;
+                } while (--copy);
+            } while (state->length != 0);
+            break;
+
+        case DONE:
+            /* inflate stream terminated properly */
+            ret = Z_STREAM_END;
+            goto inf_leave;
+
+        case BAD:
+            ret = Z_DATA_ERROR;
+            goto inf_leave;
+
+        default:
+            /* can't happen, but makes compilers happy */
+            ret = Z_STREAM_ERROR;
+            goto inf_leave;
+        }
+
+    /* Write leftover output and return unused input */
+  inf_leave:
+    if (left < state->wsize) {
+        if (out(out_desc, state->window, state->wsize - left) &&
+            ret == Z_STREAM_END)
+            ret = Z_BUF_ERROR;
+    }
+    strm->next_in = next;
+    strm->avail_in = have;
+    return ret;
+}
+
+int ZEXPORT inflateBackEnd(z_streamp strm) {
+    if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
+        return Z_STREAM_ERROR;
+    ZFREE(strm, strm->state);
+    strm->state = Z_NULL;
+    Tracev((stderr, "inflate: end\n"));
+    return Z_OK;
+}

deps/v8/third_party/zlib/inffast.c

@@ -0,0 +1,327 @@
+/* inffast.c -- fast decoding
+ * Copyright (C) 1995-2017 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+#include "inflate.h"
+#include "inffast.h"
+
+#ifdef ASMINF
+#  pragma message("Assembler code may have bugs -- use at your own risk")
+#else
+
+/*
+   Decode literal, length, and distance codes and write out the resulting
+   literal and match bytes until either not enough input or output is
+   available, an end-of-block is encountered, or a data error is encountered.
+   When large enough input and output buffers are supplied to inflate(), for
+   example, a 16K input buffer and a 64K output buffer, more than 95% of the
+   inflate() execution time is spent in this routine.
+
+   Entry assumptions:
+
+        state->mode == LEN
+        strm->avail_in >= INFLATE_FAST_MIN_INPUT (6 bytes)
+        strm->avail_out >= INFLATE_FAST_MIN_OUTPUT (258 bytes)
+        start >= strm->avail_out
+        state->bits < 8
+
+   On return, state->mode is one of:
+
+        LEN -- ran out of enough output space or enough available input
+        TYPE -- reached end of block code, inflate() to interpret next block
+        BAD -- error in block data
+
+   Notes:
+
+    INFLATE_FAST_MIN_INPUT: 6 bytes
+
+    - The maximum input bits used by a length/distance pair is 15 bits for the
+      length code, 5 bits for the length extra, 15 bits for the distance code,
+      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
+      Therefore if strm->avail_in >= 6, then there is enough input to avoid
+      checking for available input while decoding.
+
+    INFLATE_FAST_MIN_OUTPUT: 258 bytes
+
+    - The maximum bytes that a single length/distance pair can output is 258
+      bytes, which is the maximum length that can be coded.  inflate_fast()
+      requires strm->avail_out >= 258 for each loop to avoid checking for
+      available output space while decoding.
+ */
+void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start) {
+    struct inflate_state FAR *state;
+    z_const unsigned char FAR *in;      /* local strm->next_in */
+    z_const unsigned char FAR *last;    /* have enough input while in < last */
+    unsigned char FAR *out;     /* local strm->next_out */
+    unsigned char FAR *beg;     /* inflate()'s initial strm->next_out */
+    unsigned char FAR *end;     /* while out < end, enough space available */
+#ifdef INFLATE_STRICT
+    unsigned dmax;              /* maximum distance from zlib header */
+#endif
+    unsigned wsize;             /* window size or zero if not using window */
+    unsigned whave;             /* valid bytes in the window */
+    unsigned wnext;             /* window write index */
+    unsigned char FAR *window;  /* allocated sliding window, if wsize != 0 */
+    unsigned long hold;         /* local strm->hold */
+    unsigned bits;              /* local strm->bits */
+    code const FAR *lcode;      /* local strm->lencode */
+    code const FAR *dcode;      /* local strm->distcode */
+    unsigned lmask;             /* mask for first level of length codes */
+    unsigned dmask;             /* mask for first level of distance codes */
+    code const *here;           /* retrieved table entry */
+    unsigned op;                /* code bits, operation, extra bits, or */
+                                /*  window position, window bytes to copy */
+    unsigned len;               /* match length, unused bytes */
+    unsigned dist;              /* match distance */
+    unsigned char FAR *from;    /* where to copy match from */
+
+    /* copy state to local variables */
+    state = (struct inflate_state FAR *)strm->state;
+    in = strm->next_in;
+    last = in + (strm->avail_in - (INFLATE_FAST_MIN_INPUT - 1));
+    out = strm->next_out;
+    beg = out - (start - strm->avail_out);
+    end = out + (strm->avail_out - (INFLATE_FAST_MIN_OUTPUT - 1));
+#ifdef INFLATE_STRICT
+    dmax = state->dmax;
+#endif
+    wsize = state->wsize;
+    whave = state->whave;
+    wnext = state->wnext;
+    window = state->window;
+    hold = state->hold;
+    bits = state->bits;
+    lcode = state->lencode;
+    dcode = state->distcode;
+    lmask = (1U << state->lenbits) - 1;
+    dmask = (1U << state->distbits) - 1;
+
+    /* decode literals and length/distances until end-of-block or not enough
+       input data or output space */
+    do {
+        if (bits < 15) {
+            hold += (unsigned long)(*in++) << bits;
+            bits += 8;
+            hold += (unsigned long)(*in++) << bits;
+            bits += 8;
+        }
+        here = lcode + (hold & lmask);
+      dolen:
+        op = (unsigned)(here->bits);
+        hold >>= op;
+        bits -= op;
+        op = (unsigned)(here->op);
+        if (op == 0) {                          /* literal */
+            Tracevv((stderr, here->val >= 0x20 && here->val < 0x7f ?
+                    "inflate:         literal '%c'\n" :
+                    "inflate:         literal 0x%02x\n", here->val));
+            *out++ = (unsigned char)(here->val);
+        }
+        else if (op & 16) {                     /* length base */
+            len = (unsigned)(here->val);
+            op &= 15;                           /* number of extra bits */
+            if (op) {
+                if (bits < op) {
+                    hold += (unsigned long)(*in++) << bits;
+                    bits += 8;
+                }
+                len += (unsigned)hold & ((1U << op) - 1);
+                hold >>= op;
+                bits -= op;
+            }
+            Tracevv((stderr, "inflate:         length %u\n", len));
+            if (bits < 15) {
+                hold += (unsigned long)(*in++) << bits;
+                bits += 8;
+                hold += (unsigned long)(*in++) << bits;
+                bits += 8;
+            }
+            here = dcode + (hold & dmask);
+          dodist:
+            op = (unsigned)(here->bits);
+            hold >>= op;
+            bits -= op;
+            op = (unsigned)(here->op);
+            if (op & 16) {                      /* distance base */
+                dist = (unsigned)(here->val);
+                op &= 15;                       /* number of extra bits */
+                if (bits < op) {
+                    hold += (unsigned long)(*in++) << bits;
+                    bits += 8;
+                    if (bits < op) {
+                        hold += (unsigned long)(*in++) << bits;
+                        bits += 8;
+                    }
+                }
+                dist += (unsigned)hold & ((1U << op) - 1);
+#ifdef INFLATE_STRICT
+                if (dist > dmax) {
+                    strm->msg = (char *)"invalid distance too far back";
+                    state->mode = BAD;
+                    break;
+                }
+#endif
+                hold >>= op;
+                bits -= op;
+                Tracevv((stderr, "inflate:         distance %u\n", dist));
+                op = (unsigned)(out - beg);     /* max distance in output */
+                if (dist > op) {                /* see if copy from window */
+                    op = dist - op;             /* distance back in window */
+                    if (op > whave) {
+                        if (state->sane) {
+                            strm->msg =
+                                (char *)"invalid distance too far back";
+                            state->mode = BAD;
+                            break;
+                        }
+#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+                        if (len <= op - whave) {
+                            do {
+                                *out++ = 0;
+                            } while (--len);
+                            continue;
+                        }
+                        len -= op - whave;
+                        do {
+                            *out++ = 0;
+                        } while (--op > whave);
+                        if (op == 0) {
+                            from = out - dist;
+                            do {
+                                *out++ = *from++;
+                            } while (--len);
+                            continue;
+                        }
+#endif
+                    }
+                    from = window;
+                    if (wnext == 0) {           /* very common case */
+                        from += wsize - op;
+                        if (op < len) {         /* some from window */
+                            len -= op;
+                            do {
+                                *out++ = *from++;
+                            } while (--op);
+                            from = out - dist;  /* rest from output */
+                        }
+                    }
+                    else if (wnext < op) {      /* wrap around window */
+                        from += wsize + wnext - op;
+                        op -= wnext;
+                        if (op < len) {         /* some from end of window */
+                            len -= op;
+                            do {
+                                *out++ = *from++;
+                            } while (--op);
+                            from = window;
+                            if (wnext < len) {  /* some from start of window */
+                                op = wnext;
+                                len -= op;
+                                do {
+                                    *out++ = *from++;
+                                } while (--op);
+                                from = out - dist;      /* rest from output */
+                            }
+                        }
+                    }
+                    else {                      /* contiguous in window */
+                        from += wnext - op;
+                        if (op < len) {         /* some from window */
+                            len -= op;
+                            do {
+                                *out++ = *from++;
+                            } while (--op);
+                            from = out - dist;  /* rest from output */
+                        }
+                    }
+                    while (len > 2) {
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        len -= 3;
+                    }
+                    if (len) {
+                        *out++ = *from++;
+                        if (len > 1)
+                            *out++ = *from++;
+                    }
+                }
+                else {
+                    from = out - dist;          /* copy direct from output */
+                    do {                        /* minimum length is three */
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        *out++ = *from++;
+                        len -= 3;
+                    } while (len > 2);
+                    if (len) {
+                        *out++ = *from++;
+                        if (len > 1)
+                            *out++ = *from++;
+                    }
+                }
+            }
+            else if ((op & 64) == 0) {          /* 2nd level distance code */
+                here = dcode + here->val + (hold & ((1U << op) - 1));
+                goto dodist;
+            }
+            else {
+                strm->msg = (char *)"invalid distance code";
+                state->mode = BAD;
+                break;
+            }
+        }
+        else if ((op & 64) == 0) {              /* 2nd level length code */
+            here = lcode + here->val + (hold & ((1U << op) - 1));
+            goto dolen;
+        }
+        else if (op & 32) {                     /* end-of-block */
+            Tracevv((stderr, "inflate:         end of block\n"));
+            state->mode = TYPE;
+            break;
+        }
+        else {
+            strm->msg = (char *)"invalid literal/length code";
+            state->mode = BAD;
+            break;
+        }
+    } while (in < last && out < end);
+
+    /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
+    len = bits >> 3;
+    in -= len;
+    bits -= len << 3;
+    hold &= (1U << bits) - 1;
+
+    /* update state and return */
+    strm->next_in = in;
+    strm->next_out = out;
+    strm->avail_in = (unsigned)(in < last ?
+        (INFLATE_FAST_MIN_INPUT - 1) + (last - in) :
+        (INFLATE_FAST_MIN_INPUT - 1) - (in - last));
+    strm->avail_out = (unsigned)(out < end ?
+        (INFLATE_FAST_MIN_OUTPUT - 1) + (end - out) :
+        (INFLATE_FAST_MIN_OUTPUT - 1) - (out - end));
+    state->hold = hold;
+    state->bits = bits;
+    return;
+}
+
+/*
+   inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
+   - Using bit fields for code structure
+   - Different op definition to avoid & for extra bits (do & for table bits)
+   - Three separate decoding do-loops for direct, window, and wnext == 0
+   - Special case for distance > 1 copies to do overlapped load and store copy
+   - Explicit branch predictions (based on measured branch probabilities)
+   - Deferring match copy and interspersed it with decoding subsequent codes
+   - Swapping literal/length else
+   - Swapping window/direct else
+   - Larger unrolled copy loops (three is about right)
+   - Moving len -= 3 statement into middle of loop
+ */
+
+#endif /* !ASMINF */

deps/v8/third_party/zlib/inffast.h

@@ -0,0 +1,26 @@
+/* inffast.h -- header to use inffast.c
+ * Copyright (C) 1995-2003, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* INFLATE_FAST_MIN_INPUT: the minimum number of input bytes needed so that
+   we can safely call inflate_fast() with only one up-front bounds check. One
+   length/distance code pair (15 bits for the length code, 5 bits for length
+   extra, 15 bits for the distance code, 13 bits for distance extra) requires
+   reading up to 48 input bits (6 bytes).
+*/
+#define INFLATE_FAST_MIN_INPUT 6
+
+/* INFLATE_FAST_MIN_OUTPUT: the minimum number of output bytes needed so that
+   we can safely call inflate_fast() with only one up-front bounds check. One
+   length/distance code pair can output up to 258 bytes, which is the maximum
+   length that can be coded.
+ */
+#define INFLATE_FAST_MIN_OUTPUT 258
+
+void ZLIB_INTERNAL inflate_fast(z_streamp strm, unsigned start);

deps/v8/third_party/zlib/inffixed.h

@@ -0,0 +1,94 @@
+    /* inffixed.h -- table for decoding fixed codes
+     * Generated automatically by makefixed().
+     */
+
+    /* WARNING: this file should *not* be used by applications.
+       It is part of the implementation of this library and is
+       subject to change. Applications should only use zlib.h.
+     */
+
+    static const code lenfix[512] = {
+        {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
+        {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
+        {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
+        {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
+        {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
+        {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
+        {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
+        {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
+        {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
+        {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
+        {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
+        {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
+        {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
+        {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
+        {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
+        {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
+        {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
+        {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
+        {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
+        {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
+        {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
+        {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
+        {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
+        {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
+        {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
+        {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
+        {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
+        {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
+        {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
+        {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
+        {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
+        {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
+        {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
+        {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
+        {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
+        {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
+        {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
+        {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
+        {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
+        {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
+        {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
+        {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
+        {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
+        {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
+        {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
+        {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
+        {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
+        {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
+        {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
+        {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
+        {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
+        {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
+        {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
+        {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
+        {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
+        {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
+        {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
+        {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
+        {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
+        {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
+        {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
+        {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
+        {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
+        {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
+        {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
+        {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
+        {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
+        {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
+        {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
+        {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
+        {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
+        {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
+        {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
+        {0,9,255}
+    };
+
+    static const code distfix[32] = {
+        {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
+        {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
+        {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
+        {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
+        {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
+        {22,5,193},{64,5,0}
+    };

deps/v8/third_party/zlib/inflate.h

@@ -0,0 +1,126 @@
+/* inflate.h -- internal inflate state definition
+ * Copyright (C) 1995-2019 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* define NO_GZIP when compiling if you want to disable gzip header and
+   trailer decoding by inflate().  NO_GZIP would be used to avoid linking in
+   the crc code when it is not needed.  For shared libraries, gzip decoding
+   should be left enabled. */
+#ifndef NO_GZIP
+#  define GUNZIP
+#endif
+
+/* Possible inflate modes between inflate() calls */
+typedef enum {
+    HEAD = 16180,   /* i: waiting for magic header */
+    FLAGS,      /* i: waiting for method and flags (gzip) */
+    TIME,       /* i: waiting for modification time (gzip) */
+    OS,         /* i: waiting for extra flags and operating system (gzip) */
+    EXLEN,      /* i: waiting for extra length (gzip) */
+    EXTRA,      /* i: waiting for extra bytes (gzip) */
+    NAME,       /* i: waiting for end of file name (gzip) */
+    COMMENT,    /* i: waiting for end of comment (gzip) */
+    HCRC,       /* i: waiting for header crc (gzip) */
+    DICTID,     /* i: waiting for dictionary check value */
+    DICT,       /* waiting for inflateSetDictionary() call */
+        TYPE,       /* i: waiting for type bits, including last-flag bit */
+        TYPEDO,     /* i: same, but skip check to exit inflate on new block */
+        STORED,     /* i: waiting for stored size (length and complement) */
+        COPY_,      /* i/o: same as COPY below, but only first time in */
+        COPY,       /* i/o: waiting for input or output to copy stored block */
+        TABLE,      /* i: waiting for dynamic block table lengths */
+        LENLENS,    /* i: waiting for code length code lengths */
+        CODELENS,   /* i: waiting for length/lit and distance code lengths */
+            LEN_,       /* i: same as LEN below, but only first time in */
+            LEN,        /* i: waiting for length/lit/eob code */
+            LENEXT,     /* i: waiting for length extra bits */
+            DIST,       /* i: waiting for distance code */
+            DISTEXT,    /* i: waiting for distance extra bits */
+            MATCH,      /* o: waiting for output space to copy string */
+            LIT,        /* o: waiting for output space to write literal */
+    CHECK,      /* i: waiting for 32-bit check value */
+    LENGTH,     /* i: waiting for 32-bit length (gzip) */
+    DONE,       /* finished check, done -- remain here until reset */
+    BAD,        /* got a data error -- remain here until reset */
+    MEM,        /* got an inflate() memory error -- remain here until reset */
+    SYNC        /* looking for synchronization bytes to restart inflate() */
+} inflate_mode;
+
+/*
+    State transitions between above modes -
+
+    (most modes can go to BAD or MEM on error -- not shown for clarity)
+
+    Process header:
+        HEAD -> (gzip) or (zlib) or (raw)
+        (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
+                  HCRC -> TYPE
+        (zlib) -> DICTID or TYPE
+        DICTID -> DICT -> TYPE
+        (raw) -> TYPEDO
+    Read deflate blocks:
+            TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
+            STORED -> COPY_ -> COPY -> TYPE
+            TABLE -> LENLENS -> CODELENS -> LEN_
+            LEN_ -> LEN
+    Read deflate codes in fixed or dynamic block:
+                LEN -> LENEXT or LIT or TYPE
+                LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
+                LIT -> LEN
+    Process trailer:
+        CHECK -> LENGTH -> DONE
+ */
+
+/* State maintained between inflate() calls -- approximately 7K bytes, not
+   including the allocated sliding window, which is up to 32K bytes. */
+struct inflate_state {
+    z_streamp strm;             /* pointer back to this zlib stream */
+    inflate_mode mode;          /* current inflate mode */
+    int last;                   /* true if processing last block */
+    int wrap;                   /* bit 0 true for zlib, bit 1 true for gzip,
+                                   bit 2 true to validate check value */
+    int havedict;               /* true if dictionary provided */
+    int flags;                  /* gzip header method and flags, 0 if zlib, or
+                                   -1 if raw or no header yet */
+    unsigned dmax;              /* zlib header max distance (INFLATE_STRICT) */
+    unsigned long check;        /* protected copy of check value */
+    unsigned long total;        /* protected copy of output count */
+    gz_headerp head;            /* where to save gzip header information */
+        /* sliding window */
+    unsigned wbits;             /* log base 2 of requested window size */
+    unsigned wsize;             /* window size or zero if not using window */
+    unsigned whave;             /* valid bytes in the window */
+    unsigned wnext;             /* window write index */
+    unsigned char FAR *window;  /* allocated sliding window, if needed */
+        /* bit accumulator */
+    unsigned long hold;         /* input bit accumulator */
+    unsigned bits;              /* number of bits in "in" */
+        /* for string and stored block copying */
+    unsigned length;            /* literal or length of data to copy */
+    unsigned offset;            /* distance back to copy string from */
+        /* for table and code decoding */
+    unsigned extra;             /* extra bits needed */
+        /* fixed and dynamic code tables */
+    code const FAR *lencode;    /* starting table for length/literal codes */
+    code const FAR *distcode;   /* starting table for distance codes */
+    unsigned lenbits;           /* index bits for lencode */
+    unsigned distbits;          /* index bits for distcode */
+        /* dynamic table building */
+    unsigned ncode;             /* number of code length code lengths */
+    unsigned nlen;              /* number of length code lengths */
+    unsigned ndist;             /* number of distance code lengths */
+    unsigned have;              /* number of code lengths in lens[] */
+    code FAR *next;             /* next available space in codes[] */
+    unsigned short lens[320];   /* temporary storage for code lengths */
+    unsigned short work[288];   /* work area for code table building */
+    code codes[ENOUGH];         /* space for code tables */
+    int sane;                   /* if false, allow invalid distance too far */
+    int back;                   /* bits back of last unprocessed length/lit */
+    unsigned was;               /* initial length of match */
+};

deps/v8/third_party/zlib/inftrees.c

@@ -0,0 +1,299 @@
+/* inftrees.c -- generate Huffman trees for efficient decoding
+ * Copyright (C) 1995-2023 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include "zutil.h"
+#include "inftrees.h"
+
+#define MAXBITS 15
+
+const char inflate_copyright[] =
+   " inflate 1.3.0.1 Copyright 1995-2023 Mark Adler ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+
+/*
+   Build a set of tables to decode the provided canonical Huffman code.
+   The code lengths are lens[0..codes-1].  The result starts at *table,
+   whose indices are 0..2^bits-1.  work is a writable array of at least
+   lens shorts, which is used as a work area.  type is the type of code
+   to be generated, CODES, LENS, or DISTS.  On return, zero is success,
+   -1 is an invalid code, and +1 means that ENOUGH isn't enough.  table
+   on return points to the next available entry's address.  bits is the
+   requested root table index bits, and on return it is the actual root
+   table index bits.  It will differ if the request is greater than the
+   longest code or if it is less than the shortest code.
+ */
+int ZLIB_INTERNAL inflate_table(codetype type, unsigned short FAR *lens,
+                                unsigned codes, code FAR * FAR *table,
+                                unsigned FAR *bits, unsigned short FAR *work) {
+    unsigned len;               /* a code's length in bits */
+    unsigned sym;               /* index of code symbols */
+    unsigned min, max;          /* minimum and maximum code lengths */
+    unsigned root;              /* number of index bits for root table */
+    unsigned curr;              /* number of index bits for current table */
+    unsigned drop;              /* code bits to drop for sub-table */
+    int left;                   /* number of prefix codes available */
+    unsigned used;              /* code entries in table used */
+    unsigned huff;              /* Huffman code */
+    unsigned incr;              /* for incrementing code, index */
+    unsigned fill;              /* index for replicating entries */
+    unsigned low;               /* low bits for current root entry */
+    unsigned mask;              /* mask for low root bits */
+    code here;                  /* table entry for duplication */
+    code FAR *next;             /* next available space in table */
+    const unsigned short FAR *base;     /* base value table to use */
+    const unsigned short FAR *extra;    /* extra bits table to use */
+    unsigned match;             /* use base and extra for symbol >= match */
+    unsigned short count[MAXBITS+1];    /* number of codes of each length */
+    unsigned short offs[MAXBITS+1];     /* offsets in table for each length */
+    static const unsigned short lbase[31] = { /* Length codes 257..285 base */
+        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
+    static const unsigned short lext[31] = { /* Length codes 257..285 extra */
+        16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
+        19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 70, 200};
+    static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
+        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+        8193, 12289, 16385, 24577, 0, 0};
+    static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
+        16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
+        23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
+        28, 28, 29, 29, 64, 64};
+
+    /*
+       Process a set of code lengths to create a canonical Huffman code.  The
+       code lengths are lens[0..codes-1].  Each length corresponds to the
+       symbols 0..codes-1.  The Huffman code is generated by first sorting the
+       symbols by length from short to long, and retaining the symbol order
+       for codes with equal lengths.  Then the code starts with all zero bits
+       for the first code of the shortest length, and the codes are integer
+       increments for the same length, and zeros are appended as the length
+       increases.  For the deflate format, these bits are stored backwards
+       from their more natural integer increment ordering, and so when the
+       decoding tables are built in the large loop below, the integer codes
+       are incremented backwards.
+
+       This routine assumes, but does not check, that all of the entries in
+       lens[] are in the range 0..MAXBITS.  The caller must assure this.
+       1..MAXBITS is interpreted as that code length.  zero means that that
+       symbol does not occur in this code.
+
+       The codes are sorted by computing a count of codes for each length,
+       creating from that a table of starting indices for each length in the
+       sorted table, and then entering the symbols in order in the sorted
+       table.  The sorted table is work[], with that space being provided by
+       the caller.
+
+       The length counts are used for other purposes as well, i.e. finding
+       the minimum and maximum length codes, determining if there are any
+       codes at all, checking for a valid set of lengths, and looking ahead
+       at length counts to determine sub-table sizes when building the
+       decoding tables.
+     */
+
+    /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
+    for (len = 0; len <= MAXBITS; len++)
+        count[len] = 0;
+    for (sym = 0; sym < codes; sym++)
+        count[lens[sym]]++;
+
+    /* bound code lengths, force root to be within code lengths */
+    root = *bits;
+    for (max = MAXBITS; max >= 1; max--)
+        if (count[max] != 0) break;
+    if (root > max) root = max;
+    if (max == 0) {                     /* no symbols to code at all */
+        here.op = (unsigned char)64;    /* invalid code marker */
+        here.bits = (unsigned char)1;
+        here.val = (unsigned short)0;
+        *(*table)++ = here;             /* make a table to force an error */
+        *(*table)++ = here;
+        *bits = 1;
+        return 0;     /* no symbols, but wait for decoding to report error */
+    }
+    for (min = 1; min < max; min++)
+        if (count[min] != 0) break;
+    if (root < min) root = min;
+
+    /* check for an over-subscribed or incomplete set of lengths */
+    left = 1;
+    for (len = 1; len <= MAXBITS; len++) {
+        left <<= 1;
+        left -= count[len];
+        if (left < 0) return -1;        /* over-subscribed */
+    }
+    if (left > 0 && (type == CODES || max != 1))
+        return -1;                      /* incomplete set */
+
+    /* generate offsets into symbol table for each length for sorting */
+    offs[1] = 0;
+    for (len = 1; len < MAXBITS; len++)
+        offs[len + 1] = offs[len] + count[len];
+
+    /* sort symbols by length, by symbol order within each length */
+    for (sym = 0; sym < codes; sym++)
+        if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
+
+    /*
+       Create and fill in decoding tables.  In this loop, the table being
+       filled is at next and has curr index bits.  The code being used is huff
+       with length len.  That code is converted to an index by dropping drop
+       bits off of the bottom.  For codes where len is less than drop + curr,
+       those top drop + curr - len bits are incremented through all values to
+       fill the table with replicated entries.
+
+       root is the number of index bits for the root table.  When len exceeds
+       root, sub-tables are created pointed to by the root entry with an index
+       of the low root bits of huff.  This is saved in low to check for when a
+       new sub-table should be started.  drop is zero when the root table is
+       being filled, and drop is root when sub-tables are being filled.
+
+       When a new sub-table is needed, it is necessary to look ahead in the
+       code lengths to determine what size sub-table is needed.  The length
+       counts are used for this, and so count[] is decremented as codes are
+       entered in the tables.
+
+       used keeps track of how many table entries have been allocated from the
+       provided *table space.  It is checked for LENS and DIST tables against
+       the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
+       the initial root table size constants.  See the comments in inftrees.h
+       for more information.
+
+       sym increments through all symbols, and the loop terminates when
+       all codes of length max, i.e. all codes, have been processed.  This
+       routine permits incomplete codes, so another loop after this one fills
+       in the rest of the decoding tables with invalid code markers.
+     */
+
+    /* set up for code type */
+    switch (type) {
+    case CODES:
+        base = extra = work;    /* dummy value--not used */
+        match = 20;
+        break;
+    case LENS:
+        base = lbase;
+        extra = lext;
+        match = 257;
+        break;
+    default:    /* DISTS */
+        base = dbase;
+        extra = dext;
+        match = 0;
+    }
+
+    /* initialize state for loop */
+    huff = 0;                   /* starting code */
+    sym = 0;                    /* starting code symbol */
+    len = min;                  /* starting code length */
+    next = *table;              /* current table to fill in */
+    curr = root;                /* current table index bits */
+    drop = 0;                   /* current bits to drop from code for index */
+    low = (unsigned)(-1);       /* trigger new sub-table when len > root */
+    used = 1U << root;          /* use root table entries */
+    mask = used - 1;            /* mask for comparing low */
+
+    /* check available table space */
+    if ((type == LENS && used > ENOUGH_LENS) ||
+        (type == DISTS && used > ENOUGH_DISTS))
+        return 1;
+
+    /* process all codes and make table entries */
+    for (;;) {
+        /* create table entry */
+        here.bits = (unsigned char)(len - drop);
+        if (work[sym] + 1U < match) {
+            here.op = (unsigned char)0;
+            here.val = work[sym];
+        }
+        else if (work[sym] >= match) {
+            here.op = (unsigned char)(extra[work[sym] - match]);
+            here.val = base[work[sym] - match];
+        }
+        else {
+            here.op = (unsigned char)(32 + 64);         /* end of block */
+            here.val = 0;
+        }
+
+        /* replicate for those indices with low len bits equal to huff */
+        incr = 1U << (len - drop);
+        fill = 1U << curr;
+        min = fill;                 /* save offset to next table */
+        do {
+            fill -= incr;
+            next[(huff >> drop) + fill] = here;
+        } while (fill != 0);
+
+        /* backwards increment the len-bit code huff */
+        incr = 1U << (len - 1);
+        while (huff & incr)
+            incr >>= 1;
+        if (incr != 0) {
+            huff &= incr - 1;
+            huff += incr;
+        }
+        else
+            huff = 0;
+
+        /* go to next symbol, update count, len */
+        sym++;
+        if (--(count[len]) == 0) {
+            if (len == max) break;
+            len = lens[work[sym]];
+        }
+
+        /* create new sub-table if needed */
+        if (len > root && (huff & mask) != low) {
+            /* if first time, transition to sub-tables */
+            if (drop == 0)
+                drop = root;
+
+            /* increment past last table */
+            next += min;            /* here min is 1 << curr */
+
+            /* determine length of next table */
+            curr = len - drop;
+            left = (int)(1 << curr);
+            while (curr + drop < max) {
+                left -= count[curr + drop];
+                if (left <= 0) break;
+                curr++;
+                left <<= 1;
+            }
+
+            /* check for enough space */
+            used += 1U << curr;
+            if ((type == LENS && used > ENOUGH_LENS) ||
+                (type == DISTS && used > ENOUGH_DISTS))
+                return 1;
+
+            /* point entry in root table to sub-table */
+            low = huff & mask;
+            (*table)[low].op = (unsigned char)curr;
+            (*table)[low].bits = (unsigned char)root;
+            (*table)[low].val = (unsigned short)(next - *table);
+        }
+    }
+
+    /* fill in remaining table entry if code is incomplete (guaranteed to have
+       at most one remaining entry, since if the code is incomplete, the
+       maximum code length that was allowed to get this far is one bit) */
+    if (huff != 0) {
+        here.op = (unsigned char)64;            /* invalid code marker */
+        here.bits = (unsigned char)(len - drop);
+        here.val = (unsigned short)0;
+        next[huff] = here;
+    }
+
+    /* set return parameters */
+    *table += used;
+    *bits = root;
+    return 0;
+}

deps/v8/third_party/zlib/inftrees.h

@@ -0,0 +1,62 @@
+/* inftrees.h -- header to use inftrees.c
+ * Copyright (C) 1995-2005, 2010 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* Structure for decoding tables.  Each entry provides either the
+   information needed to do the operation requested by the code that
+   indexed that table entry, or it provides a pointer to another
+   table that indexes more bits of the code.  op indicates whether
+   the entry is a pointer to another table, a literal, a length or
+   distance, an end-of-block, or an invalid code.  For a table
+   pointer, the low four bits of op is the number of index bits of
+   that table.  For a length or distance, the low four bits of op
+   is the number of extra bits to get after the code.  bits is
+   the number of bits in this code or part of the code to drop off
+   of the bit buffer.  val is the actual byte to output in the case
+   of a literal, the base length or distance, or the offset from
+   the current table to the next table.  Each entry is four bytes. */
+typedef struct {
+    unsigned char op;           /* operation, extra bits, table bits */
+    unsigned char bits;         /* bits in this part of the code */
+    unsigned short val;         /* offset in table or code value */
+} code;
+
+/* op values as set by inflate_table():
+    00000000 - literal
+    0000tttt - table link, tttt != 0 is the number of table index bits
+    0001eeee - length or distance, eeee is the number of extra bits
+    01100000 - end of block
+    01000000 - invalid code
+ */
+
+/* Maximum size of the dynamic table.  The maximum number of code structures is
+   1924, which is the sum of 1332 for literal/length codes and 592 for distance
+   codes.  These values were found by exhaustive searches using the program
+   examples/enough.c found in the zlib distribution.  The arguments to that
+   program are the number of symbols, the initial root table size, and the
+   maximum bit length of a code.  "enough 286 10 15" for literal/length codes
+   returns returns 1332, and "enough 30 9 15" for distance codes returns 592.
+   The initial root table size (10 or 9) is found in the fifth argument of the
+   inflate_table() calls in inflate.c and infback.c.  If the root table size is
+   changed, then these maximum sizes would be need to be recalculated and
+   updated. */
+#define ENOUGH_LENS 1332
+#define ENOUGH_DISTS 592
+#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
+
+/* Type of code to build for inflate_table() */
+typedef enum {
+    CODES,
+    LENS,
+    DISTS
+} codetype;
+
+int ZLIB_INTERNAL inflate_table(codetype type, unsigned short FAR *lens,
+                                unsigned codes, code FAR * FAR *table,
+                                unsigned FAR *bits, unsigned short FAR *work);

deps/v8/third_party/zlib/patches/0000-build.patch

@@ -0,0 +1,158 @@
+diff --git a/contrib/minizip/ioapi.c b/contrib/minizip/ioapi.c
+index 782d32469ae5d..a38881dca90a2 100644
+--- a/contrib/minizip/ioapi.c
++++ b/contrib/minizip/ioapi.c
+@@ -14,7 +14,7 @@
+         #define _CRT_SECURE_NO_WARNINGS
+ #endif
+ 
+-#if defined(__APPLE__) || defined(IOAPI_NO_64) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
++#if defined(__APPLE__) || defined(__Fuchsia__) || defined(IOAPI_NO_64) || defined(__HAIKU__) || defined(MINIZIP_FOPEN_NO_64)
+ // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
+ #define FOPEN_FUNC(filename, mode) fopen(filename, mode)
+ #define FTELLO_FUNC(stream) ftello(stream)
+diff --git a/contrib/minizip/iowin32.c b/contrib/minizip/iowin32.c
+index 08536e94b8a28..bbd7773e67146 100644
+--- a/contrib/minizip/iowin32.c
++++ b/contrib/minizip/iowin32.c
+@@ -25,7 +25,12 @@
+ #define INVALID_SET_FILE_POINTER ((DWORD)-1)
+ #endif
+ 
++#ifdef _WIN32_WINNT
++#undef _WIN32_WINNT
++#define _WIN32_WINNT 0x601
++#endif
+ 
++#if _WIN32_WINNT >= _WIN32_WINNT_WIN8
+ // see Include/shared/winapifamily.h in the Windows Kit
+ #if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
+ 
+@@ -37,6 +42,7 @@
+ #define IOWIN32_USING_WINRT_API 1
+ #endif
+ #endif
++#endif
+ 
+ typedef struct
+ {
+diff --git a/gzread.c b/gzread.c
+index 956b91ea7d9e..832d3ef98c59 100644
+--- a/gzread.c
++++ b/gzread.c
+@@ -443,7 +443,11 @@ z_size_t ZEXPORT gzfread(buf, size, nitems, file)
+ #  undef z_gzgetc
+ #else
+ #  undef gzgetc
++#  ifdef Z_CR_PREFIX_SET
++#    define gzgetc Cr_z_gzgetc
++#  endif
+ #endif
++
+ int ZEXPORT gzgetc(file)
+     gzFile file;
+ {
+diff --git a/zconf.h b/zconf.h
+index 5e1d68a004e9..a7a815f575a7 100644
+--- a/zconf.h
++++ b/zconf.h
+@@ -8,6 +8,10 @@
+ #ifndef ZCONF_H
+ #define ZCONF_H
+ 
++/*
++ * This library is also built as a part of AOSP, which does not need to include
++ * chromeconf.h. This config does not want chromeconf.h, so it can set this
++ * macro to opt out. While this works today, there's no guarantee that building
++ * zlib outside of Chromium keeps working in the future.
++ */
++#if !defined(CHROMIUM_ZLIB_NO_CHROMECONF)
++/* This include does prefixing as below, but with an updated set of names.  Also
++ * sets up export macros in component builds. */
++#include "chromeconf.h"
++#endif
++
+ /*
+  * If you *really* need a unique prefix for all types and library functions,
+  * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
+@@ -431,7 +434,7 @@ typedef uLong FAR uLongf;
+    typedef unsigned long z_crc_t;
+ #endif
+ 
+-#ifdef HAVE_UNISTD_H    /* may be set to #if 1 by ./configure */
++#if !defined(_WIN32)
+ #  define Z_HAVE_UNISTD_H
+ #endif
+ 
+diff --git a/zlib.h b/zlib.h
+index f09cdaf1e054..99fd467f6b1a 100644
+--- a/zlib.h
++++ b/zlib.h
+@@ -1824,6 +1824,11 @@ ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file));  /* backward compatibility */
+ #  undef z_gzgetc
+ #  define z_gzgetc(g) \
+           ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
++#elif defined(Z_CR_PREFIX_SET)
++#    undef gzgetc
++#    define gzgetc(g) \
++          ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) \
++                     : (Cr_z_gzgetc)(g))
+ #else
+ #  define gzgetc(g) \
+           ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : (gzgetc)(g))
+@@ -1853,11 +1858,29 @@ ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file));  /* backward compatibility */
+ #    define z_adler32_combine z_adler32_combine64
+ #    define z_crc32_combine z_crc32_combine64
+ #  else
++#    ifdef gzopen
++#      undef gzopen
++#    endif
+ #    define gzopen gzopen64
++#    ifdef gzseek
++#      undef gzseek
++#    endif
+ #    define gzseek gzseek64
++#    ifdef gztell
++#      undef gztell
++#    endif
+ #    define gztell gztell64
++#    ifdef gzoffset
++#      undef gzoffset
++#    endif
+ #    define gzoffset gzoffset64
++#    ifdef adler32_combine
++#      undef adler32_combine
++#    endif
+ #    define adler32_combine adler32_combine64
++#    ifdef crc32_combine
++#      undef crc32_combine
++#    endif
+ #    define crc32_combine crc32_combine64
+ #  endif
+ #  ifndef Z_LARGE64
+diff --git a/zutil.h b/zutil.h
+index b079ea6a80f5..80375b8b6109 100644
+--- a/zutil.h
++++ b/zutil.h
+@@ -28,6 +28,21 @@
+ #  include <string.h>
+ #  include <stdlib.h>
+ #endif
++#ifdef NO_ERRNO_H
++#   ifdef _WIN32_WCE
++      /* The Microsoft C Run-Time Library for Windows CE doesn't have
++       * errno.  We define it as a global variable to simplify porting.
++       * Its value is always 0 and should not be used.  We rename it to
++       * avoid conflict with other libraries that use the same workaround.
++       */
++#     define errno z_errno
++#   endif
++    extern int errno;
++#else
++#  ifndef _WIN32_WCE
++#    include <errno.h>
++#  endif
++#endif
+ 
+ #ifdef Z_SOLO
+    typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */

deps/v8/third_party/zlib/patches/0002-uninitializedcheck.patch

@@ -0,0 +1,27 @@
+From 1a03e7aec95d89c659fd91f195b99893b6458cd7 Mon Sep 17 00:00:00 2001
+From: Adenilson Cavalcanti <adenilson.cavalcanti@arm.com>
+Date: Wed, 27 Sep 2017 13:59:04 -0700
+Subject: [PATCH] Zlib patch: prevent uninitialized use of state->check
+
+No need to call the Adler32 checksum function, just set
+the struct field to the expected value.
+
+Upstream bug: madler/zlib#245
+---
+ third_party/zlib/inflate.c                             |  2 +-
+ 1 files changed, 1 insertion(+), 1 deletions(-)
+ delete mode 100644 third_party/zlib/patches/0002-uninitializedcheck.patch
+
+diff --git a/third_party/zlib/inflate.c b/third_party/zlib/inflate.c
+index bec9497..5c40cf1 100644
+--- a/third_party/zlib/inflate.c
++++ b/third_party/zlib/inflate.c
+@@ -228,7 +228,7 @@ int stream_size;
+     state->strm = strm;
+     state->window = Z_NULL;
+     state->mode = HEAD;     /* to pass state test in inflateReset2() */
+-    state->check = adler32(0L, Z_NULL, 0);
++    state->check = 1L;      /* 1L is the result of adler32() zero length data */
+     ret = inflateReset2(strm, windowBits);
+     if (ret != Z_OK) {
+         ZFREE(strm, state);

deps/v8/third_party/zlib/patches/0003-uninitializedjump.patch

@@ -0,0 +1,15 @@
+diff --git a/third_party/zlib/deflate.c b/third_party/zlib/deflate.c
+index a39e62787862..c6053fd1c7ea 100644
+--- a/third_party/zlib/deflate.c
++++ b/third_party/zlib/deflate.c
+@@ -318,6 +318,10 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
+                                  s->w_size + window_padding,
+                                  2*sizeof(Byte));
+     s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
++    /* Avoid use of uninitialized value, see:
++     * https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11360
++     */
++    zmemzero(s->prev, s->w_size * sizeof(Pos));
+     s->head   = (Posf *)  ZALLOC(strm, s->hash_size, sizeof(Pos));
+ 
+     s->high_water = 0;      /* nothing written to s->window yet */

deps/v8/third_party/zlib/patches/0004-fix-uwp.patch

@@ -0,0 +1,27 @@
+diff --git a/third_party/zlib/contrib/minizip/iowin32.c b/third_party/zlib/contrib/minizip/iowin32.c
+index bbd7773e67146..3f6867fd7e40b 100644
+--- a/third_party/zlib/contrib/minizip/iowin32.c
++++ b/third_party/zlib/contrib/minizip/iowin32.c
+@@ -30,19 +30,12 @@
+ #define _WIN32_WINNT 0x601
+ #endif
+ 
+-#if _WIN32_WINNT >= _WIN32_WINNT_WIN8
+-// see Include/shared/winapifamily.h in the Windows Kit
+-#if defined(WINAPI_FAMILY_PARTITION) && (!(defined(IOWIN32_USING_WINRT_API)))
+-
+-#if !defined(WINAPI_FAMILY_ONE_PARTITION)
+-#define WINAPI_FAMILY_ONE_PARTITION(PartitionSet, Partition) ((WINAPI_FAMILY & PartitionSet) == Partition)
+-#endif
+-
+-#if WINAPI_FAMILY_ONE_PARTITION(WINAPI_FAMILY, WINAPI_PARTITION_APP)
++#if !defined(IOWIN32_USING_WINRT_API)
++#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_APP)
++// Windows Store or Universal Windows Platform
+ #define IOWIN32_USING_WINRT_API 1
+ #endif
+ #endif
+-#endif
+ 
+ typedef struct
+ {