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/*
* Copyright (c) 2016 Thomas Pornin <[email protected]>
*
* 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.
*/
#include "inner.h"
/* see bearssl_ssl.h */
void
br_ssl_client_zero(br_ssl_client_context *cc)
{
/*
* For really standard C, we should explicitly set to NULL all
* pointers, and 0 all other fields. However, on all our target
* architectures, a direct memset() will work, be faster, and
* use a lot less code.
*/
memset(cc, 0, sizeof *cc);
}
/* see bearssl_ssl.h */
int
br_ssl_client_reset(br_ssl_client_context *cc,
const char *server_name, int resume_session)
{
size_t n;
br_ssl_engine_set_buffer(&cc->eng, NULL, 0, 0);
cc->eng.version_out = cc->eng.version_min;
if (!resume_session) {
br_ssl_client_forget_session(cc);
}
if (!br_ssl_engine_init_rand(&cc->eng)) {
return 0;
}
/*
* We always set back the "reneg" flag to 0 because we use it
* to distinguish between first handshake and renegotiation.
* Note that "renegotiation" and "session resumption" are two
* different things.
*/
cc->eng.reneg = 0;
if (server_name == NULL) {
cc->eng.server_name[0] = 0;
} else {
n = strlen(server_name) + 1;
if (n > sizeof cc->eng.server_name) {
br_ssl_engine_fail(&cc->eng, BR_ERR_BAD_PARAM);
return 0;
}
memcpy(cc->eng.server_name, server_name, n);
}
br_ssl_engine_hs_reset(&cc->eng,
br_ssl_hs_client_init_main, br_ssl_hs_client_run);
return br_ssl_engine_last_error(&cc->eng) == BR_ERR_OK;
}
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