Update Files

Kinc/Sources/kinc/libs/misc/lwsac/lwsac.cxx

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+/*
+ * libwebsockets - small server side websockets and web server implementation
+ *
+ * Copyright (C) 2020 Andy Green <andy@warmcat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * C++ classes for Secure Streams - atomic heap messages
+ */
+
+#include <libwebsockets.hxx>
+#include "private-lib-misc-lwsac.h"
+
+void
+lssAc::start(bool atomic)
+{
+	if (atomic && ac->next) {
+		struct lwsac *ac2 = NULL, *i;
+		size_t total = (size_t)lwsac_total_alloc(ac);
+		uint8_t *p = (uint8_t *)lwsac_use(&ac2, total, total);
+
+		/*
+		 * He wants a single linear buffer, and we have more than one
+		 * piece... let's make a new, single one, copy the fragments
+		 * in and replace the fragmented one with the unified copy.
+		 */
+
+		i = ac;
+		while (i) {
+			size_t bl = lwsac_get_tail_pos(i) -
+						lwsac_sizeof(i == ac);
+			memcpy(p, (uint8_t *)i + lwsac_sizeof(i == ac), bl);
+			p += bl;
+		}
+
+		lwsac_free(&ac);
+		ac = ac2;
+	}
+
+	iter = ac;
+}
+
+int
+lssAc::get(lssbuf_t *lb)
+{
+	if (!ac)
+		return 1;
+
+	lb->buf = (uint8_t *)iter + lwsac_sizeof(iter == ac);
+	lb->len = lwsac_get_tail_pos(iter) - lwsac_sizeof(iter == ac);
+	iter = iter->next;
+
+	return 0;
+}
+
+void
+lssAc::append(lssbuf_t *lb)
+{
+	uint8_t *p = (uint8_t *)lwsac_use(&ac, lb->len, lb->len);
+
+	if (!p)
+		throw lssException("oom");
+	memcpy(p, lb->buf, lb->len);
+}