Merge commit 'dfc115332c94a2f62058ac7f2bce7631fbd20b3d'
[unleashed/tickless.git] / lib / libssl / d1_srtp.c
blobeb1877a12c8f7771d791cfcedb150f898d40ca57
1 /* $OpenBSD: d1_srtp.c,v 1.22 2017/08/27 02:58:04 doug Exp $ */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
68 * 2. Redistributions in binary form must reproduce the above copyright
69 * notice, this list of conditions and the following disclaimer in
70 * the documentation and/or other materials provided with the
71 * distribution.
73 * 3. All advertising materials mentioning features or use of this
74 * software must display the following acknowledgment:
75 * "This product includes software developed by the OpenSSL Project
76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
79 * endorse or promote products derived from this software without
80 * prior written permission. For written permission, please contact
81 * openssl-core@openssl.org.
83 * 5. Products derived from this software may not be called "OpenSSL"
84 * nor may "OpenSSL" appear in their names without prior written
85 * permission of the OpenSSL Project.
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
103 * OF THE POSSIBILITY OF SUCH DAMAGE.
104 * ====================================================================
106 * This product includes cryptographic software written by Eric Young
107 * (eay@cryptsoft.com). This product includes software written by Tim
108 * Hudson (tjh@cryptsoft.com).
112 * DTLS code by Eric Rescorla <ekr@rtfm.com>
114 * Copyright (C) 2006, Network Resonance, Inc.
115 * Copyright (C) 2011, RTFM, Inc.
118 #include <stdio.h>
120 #include <openssl/objects.h>
122 #include "ssl_locl.h"
124 #ifndef OPENSSL_NO_SRTP
126 #include "bytestring.h"
127 #include "srtp.h"
129 static SRTP_PROTECTION_PROFILE srtp_known_profiles[] = {
131 "SRTP_AES128_CM_SHA1_80",
132 SRTP_AES128_CM_SHA1_80,
135 "SRTP_AES128_CM_SHA1_32",
136 SRTP_AES128_CM_SHA1_32,
142 srtp_find_profile_by_name(char *profile_name, SRTP_PROTECTION_PROFILE **pptr,
143 unsigned len)
145 SRTP_PROTECTION_PROFILE *p;
147 p = srtp_known_profiles;
148 while (p->name) {
149 if ((len == strlen(p->name)) &&
150 !strncmp(p->name, profile_name, len)) {
151 *pptr = p;
152 return 0;
155 p++;
158 return 1;
162 srtp_find_profile_by_num(unsigned profile_num, SRTP_PROTECTION_PROFILE **pptr)
164 SRTP_PROTECTION_PROFILE *p;
166 p = srtp_known_profiles;
167 while (p->name) {
168 if (p->id == profile_num) {
169 *pptr = p;
170 return 0;
172 p++;
175 return 1;
178 static int
179 ssl_ctx_make_profiles(const char *profiles_string,
180 STACK_OF(SRTP_PROTECTION_PROFILE) **out)
182 STACK_OF(SRTP_PROTECTION_PROFILE) *profiles;
184 char *col;
185 char *ptr = (char *)profiles_string;
187 SRTP_PROTECTION_PROFILE *p;
189 if (!(profiles = sk_SRTP_PROTECTION_PROFILE_new_null())) {
190 SSLerrorx(SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
191 return 1;
194 do {
195 col = strchr(ptr, ':');
197 if (!srtp_find_profile_by_name(ptr, &p,
198 col ? col - ptr : (int)strlen(ptr))) {
199 sk_SRTP_PROTECTION_PROFILE_push(profiles, p);
200 } else {
201 SSLerrorx(SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
202 sk_SRTP_PROTECTION_PROFILE_free(profiles);
203 return 1;
206 if (col)
207 ptr = col + 1;
208 } while (col);
210 *out = profiles;
212 return 0;
216 SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles)
218 return ssl_ctx_make_profiles(profiles, &ctx->internal->srtp_profiles);
222 SSL_set_tlsext_use_srtp(SSL *s, const char *profiles)
224 return ssl_ctx_make_profiles(profiles, &s->internal->srtp_profiles);
228 STACK_OF(SRTP_PROTECTION_PROFILE) *
229 SSL_get_srtp_profiles(SSL *s)
231 if (s != NULL) {
232 if (s->internal->srtp_profiles != NULL) {
233 return s->internal->srtp_profiles;
234 } else if ((s->ctx != NULL) &&
235 (s->ctx->internal->srtp_profiles != NULL)) {
236 return s->ctx->internal->srtp_profiles;
240 return NULL;
243 SRTP_PROTECTION_PROFILE *
244 SSL_get_selected_srtp_profile(SSL *s)
246 return s->internal->srtp_profile;
249 #endif