1 /* 2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org> 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files (the 6 * "Software"), to deal in the Software without restriction, including 7 * without limitation the rights to use, copy, modify, merge, publish, 8 * distribute, sublicense, and/or sell copies of the Software, and to 9 * permit persons to whom the Software is furnished to do so, subject to 10 * the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #include "inner.h" 26 27 /* see bearssl_ssl.h */ 28 void 29 br_ssl_client_zero(br_ssl_client_context *cc) 30 { 31 /* 32 * For really standard C, we should explicitly set to NULL all 33 * pointers, and 0 all other fields. However, on all our target 34 * architectures, a direct memset() will work, be faster, and 35 * use a lot less code. 36 */ 37 memset(cc, 0, sizeof *cc); 38 } 39 40 /* see bearssl_ssl.h */ 41 int 42 br_ssl_client_reset(br_ssl_client_context *cc, 43 const char *server_name, int resume_session) 44 { 45 size_t n; 46 47 br_ssl_engine_set_buffer(&cc->eng, NULL, 0, 0); 48 cc->eng.version_out = cc->eng.version_min; 49 if (!resume_session) { 50 br_ssl_client_forget_session(cc); 51 } 52 if (!br_ssl_engine_init_rand(&cc->eng)) { 53 return 0; 54 } 55 56 /* 57 * We always set back the "reneg" flag to 0 because we use it 58 * to distinguish between first handshake and renegotiation. 59 * Note that "renegotiation" and "session resumption" are two 60 * different things. 61 */ 62 cc->eng.reneg = 0; 63 64 if (server_name == NULL) { 65 cc->eng.server_name[0] = 0; 66 } else { 67 n = strlen(server_name) + 1; 68 if (n > sizeof cc->eng.server_name) { 69 br_ssl_engine_fail(&cc->eng, BR_ERR_BAD_PARAM); 70 return 0; 71 } 72 memcpy(cc->eng.server_name, server_name, n); 73 } 74 75 br_ssl_engine_hs_reset(&cc->eng, 76 br_ssl_hs_client_init_main, br_ssl_hs_client_run); 77 return br_ssl_engine_last_error(&cc->eng) == BR_ERR_OK; 78 } 79