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Onek8
2025-01-22 17:22:38 +01:00
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29
Kinc/Sources/kinc/libs/secure-streams/cpp/README.md Normal file
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## Secure Streams client C++ API
Enable for build by selecting `-DLWS_WITH_SECURE_STREAMS=1 -DLWS_WITH_SECURE_STREAMS_CPP=1` at
cmake.
Because it's designed for OpenSSL + system trust bundle, the minimal
example minimal-secure-streams-cpp requires `-DLWS_WITH_MINIMAL_EXAMPLES=1 -DLWS_WITH_MBEDTLS=0`
By default the -cpp example downloads https://warmcat.com/test-a.bin to the local
file /tmp/test-a.bin. By giving, eg, -c 4, you can run four concurrent downloads of
files test-a.bin through test-d.bin... up to 12 files may be downloaded concurrently.
By default it will connect over h2 and share the single connection between all the
downloads.
### File level api
```
#include <libwebsockets.hxx>
...
new lssFile(context, "https://warmcat.com/index.html",
"/tmp/index.html", lss_completion, 0);
```
This will copy the remote url to the given local file, and call the
completion callback when it has succeeded or failed.

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Kinc/Sources/kinc/libs/secure-streams/cpp/lss.cxx Normal file
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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
*/
#include <libwebsockets.hxx>
static const char *pcols[] = {
"http://", /* LWSSSP_H1 */
"https://",
"h2://", /* LWSSSP_H2 */
"h2s://",
"ws://", /* LWSSSP_WS */
"wss://",
"mqtt://", /* LWSSSP_MQTT */
"mqtts://",
"raw://", /* LWSSSP_RAW */
"raws://",
};
static const uint8_t pcols_len[] = {
7, 8, 5, 6, 5, 6, 7, 8, 6, 7
};
static const uint16_t pcols_port[] = {
80, 443, 443, 443, 80, 443, 1883, 8883, 80, 443
};
lss::lss(lws_ctx_t _ctx, std::string _uri, lsscomp_t _comp, bool _psh,
lws_sscb_rx rx, lws_sscb_tx tx, lws_sscb_state state)
{
const char *p, *urlpath;
lws_ss_info_t ssi;
int n, port;
memset(&ssi, 0, sizeof(ssi));
memset(&pol, 0, sizeof(pol));
ctx = _ctx;
comp = _comp;
comp_done = 0;
rxlen = 0;
/*
* We have a common stub userdata, our "real" userdata is in the
* derived class members. The Opaque user pointer points to the
* lss itself.
*/
ssi.handle_offset = offsetof(lssPriv, lssPriv::m_ss);
ssi.opaque_user_data_offset = offsetof(lssPriv, lssPriv::m_plss);
ssi.user_alloc = sizeof(lssPriv);
ssi.rx = rx;
ssi.tx = tx;
ssi.state = state;
ssi.policy = &pol; /* we will provide our own policy */
/*
* _uri is like "https://warmcat.com:443/index.html"... we need to
* deconstruct it into its policy implications
*/
uri = strdup(_uri.c_str());
for (n = 0; n < LWS_ARRAY_SIZE(pcols); n++)
if (!strncmp(uri, pcols[n], pcols_len[n]))
break;
if (n == LWS_ARRAY_SIZE(pcols))
throw lssException("unknown uri protocol://");
pol.protocol = n >> 1;
if (n & 1)
pol.flags |= LWSSSPOLF_TLS;
n = pcols_port[n];
if (lws_parse_uri(uri, &p, &pol.endpoint, &n, &urlpath))
throw lssException("unable to parse uri://");
pol.port = (uint16_t)n;
if (pol.protocol <= LWSSSP_WS) {
pol.u.http.url = urlpath;
/*
* These are workarounds for common h2 server noncompliances
*/
pol.flags |= LWSSSPOLF_QUIRK_NGHTTP2_END_STREAM |
LWSSSPOLF_H2_QUIRK_OVERFLOWS_TXCR |
LWSSSPOLF_H2_QUIRK_UNCLEAN_HPACK_STATE;
if (pol.protocol < LWSSSP_WS)
pol.u.http.method = _psh ? "POST" : "GET";
}
us_start = lws_now_usecs();
if (lws_ss_create(ctx, 0, &ssi, (void *)this, &m_ss, NULL, NULL))
goto blow;
if (pol.protocol <= LWSSSP_WS)
lws_ss_client_connect(m_ss);
return;
blow:
if (uri)
free(uri);
throw lssException("ss creation failed");
}
lss::~lss()
{
if (uri)
free(uri);
if (m_ss)
lws_ss_destroy(&m_ss);
}
int lss::call_completion(lws_ss_constate_t state)
{
if (comp_done)
return 0;
if (!comp)
return 0;
comp_done = 1;
return comp(this, state, NULL);
}

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Kinc/Sources/kinc/libs/secure-streams/cpp/lssFile.cxx Normal file
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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 - file transaction
*/
#include <libwebsockets.hxx>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
static lws_ss_state_return_t
lssfile_rx(void *userobj, const uint8_t *buf, size_t len, int flags)
{
lssFile *lf = (lssFile *)userobj_to_lss(userobj);
return lf->write(buf, len, flags);
}
static lws_ss_state_return_t
lssfile_tx(void *userobj, lws_ss_tx_ordinal_t ord,uint8_t *buf, size_t *len,
int *flags)
{
/*
* TODO: we don't know how to send things yet
*/
return LWSSSSRET_TX_DONT_SEND;
}
static lws_ss_state_return_t
lssfile_state(void *userobj, void *h_src, lws_ss_constate_t state,
lws_ss_tx_ordinal_t ack)
{
lssFile *lf = (lssFile *)userobj_to_lss(userobj);
lwsl_info("%s: state %s\n", __func__, lws_ss_state_name(state));
switch (state) {
/*
* These reflect some kind of final disposition for the transaction,
* that we want to report along with the completion. If no other chance
* we'll report DESTROYING
*/
case LWSSSCS_DESTROYING:
case LWSSSCS_ALL_RETRIES_FAILED:
case LWSSSCS_QOS_ACK_REMOTE:
case LWSSSCS_QOS_NACK_REMOTE:
lf->call_completion(state);
if (state == LWSSSCS_DESTROYING) {
/*
* we get DESTROYING because we are already in the
* middle of destroying the m_ss, unlink the C++ lss
* from the ss handle so it won't recursively try to
* destroy it
*/
lf->m_ss = NULL;
delete lf;
}
break;
}
return LWSSSSRET_OK;
}
lws_ss_state_return_t lssFile::write(const uint8_t *buf, size_t len, int flags)
{
if (fd == LWS_INVALID_FILE) {
fd = open(path.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0640);
if (fd == LWS_INVALID_FILE)
return LWSSSSRET_DESTROY_ME;
}
if (::write(fd, buf, len) != len) {
close(fd);
fd = LWS_INVALID_FILE;
return LWSSSSRET_DESTROY_ME;
}
rxlen += len;
if (flags & LWSSS_FLAG_EOM) {
close(fd);
fd = LWS_INVALID_FILE;
}
return LWSSSSRET_OK;
}
lssFile::lssFile(lws_ctx_t ctx, std::string uri, std::string _path,
lsscomp_t comp, bool _psh) :
lss(ctx, uri, comp, _psh, lssfile_rx, lssfile_tx, lssfile_state)
{
path = _path;
push = _psh;
fd = LWS_INVALID_FILE;
}
lssFile::~lssFile()
{
if (fd == LWS_INVALID_FILE)
return;
close(fd);
fd = LWS_INVALID_FILE;
}

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Kinc/Sources/kinc/libs/secure-streams/cpp/lssMsg.cxx Normal file
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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>
static lws_ss_state_return_t
lssmsg_rx(void *userobj, const uint8_t *buf, size_t len, int flags)
{
return LWSSSSRET_OK;
}
static lws_ss_state_return_t
lssmsg_tx(void *userobj, lws_ss_tx_ordinal_t ord,uint8_t *buf, size_t *len,
int *flags)
{
/*
* TODO: we don't know how to send things yet
*/
return LWSSSSRET_TX_DONT_SEND;
}
static lws_ss_state_return_t
lssmsg_state(void *userobj, void *h_src, lws_ss_constate_t state,
lws_ss_tx_ordinal_t ack)
{
return LWSSSSRET_OK;
}
lssMsg::lssMsg(lws_ctx_t ctx, lsscomp_t _comp, std::string uri) :
lss(ctx, uri, comp, 0, lssmsg_rx, lssmsg_tx, lssmsg_state)
{
}
lssMsg::~lssMsg()
{
}