1*0957b409SSimon J. Gerraty /*
2*0957b409SSimon J. Gerraty * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3*0957b409SSimon J. Gerraty *
4*0957b409SSimon J. Gerraty * Permission is hereby granted, free of charge, to any person obtaining
5*0957b409SSimon J. Gerraty * a copy of this software and associated documentation files (the
6*0957b409SSimon J. Gerraty * "Software"), to deal in the Software without restriction, including
7*0957b409SSimon J. Gerraty * without limitation the rights to use, copy, modify, merge, publish,
8*0957b409SSimon J. Gerraty * distribute, sublicense, and/or sell copies of the Software, and to
9*0957b409SSimon J. Gerraty * permit persons to whom the Software is furnished to do so, subject to
10*0957b409SSimon J. Gerraty * the following conditions:
11*0957b409SSimon J. Gerraty *
12*0957b409SSimon J. Gerraty * The above copyright notice and this permission notice shall be
13*0957b409SSimon J. Gerraty * included in all copies or substantial portions of the Software.
14*0957b409SSimon J. Gerraty *
15*0957b409SSimon J. Gerraty * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16*0957b409SSimon J. Gerraty * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17*0957b409SSimon J. Gerraty * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18*0957b409SSimon J. Gerraty * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19*0957b409SSimon J. Gerraty * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20*0957b409SSimon J. Gerraty * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21*0957b409SSimon J. Gerraty * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22*0957b409SSimon J. Gerraty * SOFTWARE.
23*0957b409SSimon J. Gerraty */
24*0957b409SSimon J. Gerraty
25*0957b409SSimon J. Gerraty #include "inner.h"
26*0957b409SSimon J. Gerraty
27*0957b409SSimon J. Gerraty /* see bearssl_ssl.h */
28*0957b409SSimon J. Gerraty void
br_ssl_client_zero(br_ssl_client_context * cc)29*0957b409SSimon J. Gerraty br_ssl_client_zero(br_ssl_client_context *cc)
30*0957b409SSimon J. Gerraty {
31*0957b409SSimon J. Gerraty /*
32*0957b409SSimon J. Gerraty * For really standard C, we should explicitly set to NULL all
33*0957b409SSimon J. Gerraty * pointers, and 0 all other fields. However, on all our target
34*0957b409SSimon J. Gerraty * architectures, a direct memset() will work, be faster, and
35*0957b409SSimon J. Gerraty * use a lot less code.
36*0957b409SSimon J. Gerraty */
37*0957b409SSimon J. Gerraty memset(cc, 0, sizeof *cc);
38*0957b409SSimon J. Gerraty }
39*0957b409SSimon J. Gerraty
40*0957b409SSimon J. Gerraty /* see bearssl_ssl.h */
41*0957b409SSimon J. Gerraty int
br_ssl_client_reset(br_ssl_client_context * cc,const char * server_name,int resume_session)42*0957b409SSimon J. Gerraty br_ssl_client_reset(br_ssl_client_context *cc,
43*0957b409SSimon J. Gerraty const char *server_name, int resume_session)
44*0957b409SSimon J. Gerraty {
45*0957b409SSimon J. Gerraty size_t n;
46*0957b409SSimon J. Gerraty
47*0957b409SSimon J. Gerraty br_ssl_engine_set_buffer(&cc->eng, NULL, 0, 0);
48*0957b409SSimon J. Gerraty cc->eng.version_out = cc->eng.version_min;
49*0957b409SSimon J. Gerraty if (!resume_session) {
50*0957b409SSimon J. Gerraty br_ssl_client_forget_session(cc);
51*0957b409SSimon J. Gerraty }
52*0957b409SSimon J. Gerraty if (!br_ssl_engine_init_rand(&cc->eng)) {
53*0957b409SSimon J. Gerraty return 0;
54*0957b409SSimon J. Gerraty }
55*0957b409SSimon J. Gerraty
56*0957b409SSimon J. Gerraty /*
57*0957b409SSimon J. Gerraty * We always set back the "reneg" flag to 0 because we use it
58*0957b409SSimon J. Gerraty * to distinguish between first handshake and renegotiation.
59*0957b409SSimon J. Gerraty * Note that "renegotiation" and "session resumption" are two
60*0957b409SSimon J. Gerraty * different things.
61*0957b409SSimon J. Gerraty */
62*0957b409SSimon J. Gerraty cc->eng.reneg = 0;
63*0957b409SSimon J. Gerraty
64*0957b409SSimon J. Gerraty if (server_name == NULL) {
65*0957b409SSimon J. Gerraty cc->eng.server_name[0] = 0;
66*0957b409SSimon J. Gerraty } else {
67*0957b409SSimon J. Gerraty n = strlen(server_name) + 1;
68*0957b409SSimon J. Gerraty if (n > sizeof cc->eng.server_name) {
69*0957b409SSimon J. Gerraty br_ssl_engine_fail(&cc->eng, BR_ERR_BAD_PARAM);
70*0957b409SSimon J. Gerraty return 0;
71*0957b409SSimon J. Gerraty }
72*0957b409SSimon J. Gerraty memcpy(cc->eng.server_name, server_name, n);
73*0957b409SSimon J. Gerraty }
74*0957b409SSimon J. Gerraty
75*0957b409SSimon J. Gerraty br_ssl_engine_hs_reset(&cc->eng,
76*0957b409SSimon J. Gerraty br_ssl_hs_client_init_main, br_ssl_hs_client_run);
77*0957b409SSimon J. Gerraty return br_ssl_engine_last_error(&cc->eng) == BR_ERR_OK;
78*0957b409SSimon J. Gerraty }
79