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diff --git a/src/lib/libssl/d1_srtp.c b/src/lib/libssl/d1_srtp.c
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1/* $OpenBSD: d1_srtp.c,v 1.33 2023/07/08 16:40:13 beck Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
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.
8 *
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).
15 *
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.
22 *
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)"
40 *
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.
52 *
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.]
57 */
58/* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
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.
72 *
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/)"
77 *
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.
82 *
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.
86 *
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/)"
91 *
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 * ====================================================================
105 *
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).
109 *
110 */
111/*
112 * DTLS code by Eric Rescorla <ekr@rtfm.com>
113 *
114 * Copyright (C) 2006, Network Resonance, Inc.
115 * Copyright (C) 2011, RTFM, Inc.
116 */
117
118#include <stdio.h>
119
120#include <openssl/objects.h>
121#include <openssl/opensslconf.h>
122
123#ifndef OPENSSL_NO_SRTP
124
125#include "bytestring.h"
126#include "dtls_local.h"
127#include "ssl_local.h"
128#include "srtp.h"
129
130static const SRTP_PROTECTION_PROFILE srtp_known_profiles[] = {
131 {
132 "SRTP_AES128_CM_SHA1_80",
133 SRTP_AES128_CM_SHA1_80,
134 },
135 {
136 "SRTP_AES128_CM_SHA1_32",
137 SRTP_AES128_CM_SHA1_32,
138 },
139 {
140 "SRTP_AEAD_AES_128_GCM",
141 SRTP_AEAD_AES_128_GCM,
142 },
143 {
144 "SRTP_AEAD_AES_256_GCM",
145 SRTP_AEAD_AES_256_GCM,
146 },
147 {0}
148};
149
150int
151srtp_find_profile_by_name(const char *profile_name,
152 const SRTP_PROTECTION_PROFILE **pptr, unsigned int len)
153{
154 const SRTP_PROTECTION_PROFILE *p;
155
156 p = srtp_known_profiles;
157 while (p->name) {
158 if ((len == strlen(p->name)) &&
159 !strncmp(p->name, profile_name, len)) {
160 *pptr = p;
161 return 0;
162 }
163
164 p++;
165 }
166
167 return 1;
168}
169
170int
171srtp_find_profile_by_num(unsigned int profile_num,
172 const SRTP_PROTECTION_PROFILE **pptr)
173{
174 const SRTP_PROTECTION_PROFILE *p;
175
176 p = srtp_known_profiles;
177 while (p->name) {
178 if (p->id == profile_num) {
179 *pptr = p;
180 return 0;
181 }
182 p++;
183 }
184
185 return 1;
186}
187
188static int
189ssl_ctx_make_profiles(const char *profiles_string,
190 STACK_OF(SRTP_PROTECTION_PROFILE) **out)
191{
192 STACK_OF(SRTP_PROTECTION_PROFILE) *profiles;
193 char *col;
194 const char *ptr = profiles_string;
195 const SRTP_PROTECTION_PROFILE *p;
196
197 if (!(profiles = sk_SRTP_PROTECTION_PROFILE_new_null())) {
198 SSLerrorx(SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES);
199 return 1;
200 }
201
202 do {
203 col = strchr(ptr, ':');
204
205 if (!srtp_find_profile_by_name(ptr, &p,
206 col ? col - ptr : (int)strlen(ptr))) {
207 if (!sk_SRTP_PROTECTION_PROFILE_push(profiles, p)) {
208 sk_SRTP_PROTECTION_PROFILE_free(profiles);
209 return 1;
210 }
211 } else {
212 SSLerrorx(SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE);
213 sk_SRTP_PROTECTION_PROFILE_free(profiles);
214 return 1;
215 }
216
217 if (col)
218 ptr = col + 1;
219 } while (col);
220
221 sk_SRTP_PROTECTION_PROFILE_free(*out);
222 *out = profiles;
223
224 return 0;
225}
226
227int
228SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles)
229{
230 return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles);
231}
232LSSL_ALIAS(SSL_CTX_set_tlsext_use_srtp);
233
234int
235SSL_set_tlsext_use_srtp(SSL *s, const char *profiles)
236{
237 return ssl_ctx_make_profiles(profiles, &s->srtp_profiles);
238}
239LSSL_ALIAS(SSL_set_tlsext_use_srtp);
240
241
242STACK_OF(SRTP_PROTECTION_PROFILE) *
243SSL_get_srtp_profiles(SSL *s)
244{
245 if (s != NULL) {
246 if (s->srtp_profiles != NULL) {
247 return s->srtp_profiles;
248 } else if ((s->ctx != NULL) &&
249 (s->ctx->srtp_profiles != NULL)) {
250 return s->ctx->srtp_profiles;
251 }
252 }
253
254 return NULL;
255}
256LSSL_ALIAS(SSL_get_srtp_profiles);
257
258SRTP_PROTECTION_PROFILE *
259SSL_get_selected_srtp_profile(SSL *s)
260{
261 /* XXX cast away the const */
262 return (SRTP_PROTECTION_PROFILE *)s->srtp_profile;
263}
264LSSL_ALIAS(SSL_get_selected_srtp_profile);
265
266#endif
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