Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
| 2 | * All rights reserved. |
| 3 | * |
| 4 | * This package is an SSL implementation written |
| 5 | * by Eric Young (eay@cryptsoft.com). |
| 6 | * The implementation was written so as to conform with Netscapes SSL. |
| 7 | * |
| 8 | * This library is free for commercial and non-commercial use as long as |
| 9 | * the following conditions are aheared to. The following conditions |
| 10 | * apply to all code found in this distribution, be it the RC4, RSA, |
| 11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
| 12 | * included with this distribution is covered by the same copyright terms |
| 13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
| 14 | * |
| 15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
| 16 | * the code are not to be removed. |
| 17 | * If this package is used in a product, Eric Young should be given attribution |
| 18 | * as the author of the parts of the library used. |
| 19 | * This can be in the form of a textual message at program startup or |
| 20 | * in documentation (online or textual) provided with the package. |
| 21 | * |
| 22 | * Redistribution and use in source and binary forms, with or without |
| 23 | * modification, are permitted provided that the following conditions |
| 24 | * are met: |
| 25 | * 1. Redistributions of source code must retain the copyright |
| 26 | * notice, this list of conditions and the following disclaimer. |
| 27 | * 2. Redistributions in binary form must reproduce the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer in the |
| 29 | * documentation and/or other materials provided with the distribution. |
| 30 | * 3. All advertising materials mentioning features or use of this software |
| 31 | * must display the following acknowledgement: |
| 32 | * "This product includes cryptographic software written by |
| 33 | * Eric Young (eay@cryptsoft.com)" |
| 34 | * The word 'cryptographic' can be left out if the rouines from the library |
| 35 | * being used are not cryptographic related :-). |
| 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
| 37 | * the apps directory (application code) you must include an acknowledgement: |
| 38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
| 39 | * |
| 40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
| 41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 50 | * SUCH DAMAGE. |
| 51 | * |
| 52 | * The licence and distribution terms for any publically available version or |
| 53 | * derivative of this code cannot be changed. i.e. this code cannot simply be |
| 54 | * copied and put under another distribution licence |
| 55 | * [including the GNU Public Licence.] |
| 56 | */ |
| 57 | /* ==================================================================== |
| 58 | * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. |
| 59 | * |
| 60 | * Redistribution and use in source and binary forms, with or without |
| 61 | * modification, are permitted provided that the following conditions |
| 62 | * are met: |
| 63 | * |
| 64 | * 1. Redistributions of source code must retain the above copyright |
| 65 | * notice, this list of conditions and the following disclaimer. |
| 66 | * |
| 67 | * 2. Redistributions in binary form must reproduce the above copyright |
| 68 | * notice, this list of conditions and the following disclaimer in |
| 69 | * the documentation and/or other materials provided with the |
| 70 | * distribution. |
| 71 | * |
| 72 | * 3. All advertising materials mentioning features or use of this |
| 73 | * software must display the following acknowledgment: |
| 74 | * "This product includes software developed by the OpenSSL Project |
| 75 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" |
| 76 | * |
| 77 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 78 | * endorse or promote products derived from this software without |
| 79 | * prior written permission. For written permission, please contact |
| 80 | * openssl-core@openssl.org. |
| 81 | * |
| 82 | * 5. Products derived from this software may not be called "OpenSSL" |
| 83 | * nor may "OpenSSL" appear in their names without prior written |
| 84 | * permission of the OpenSSL Project. |
| 85 | * |
| 86 | * 6. Redistributions of any form whatsoever must retain the following |
| 87 | * acknowledgment: |
| 88 | * "This product includes software developed by the OpenSSL Project |
| 89 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" |
| 90 | * |
| 91 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 92 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 93 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 94 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 95 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 96 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 97 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 98 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 99 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 100 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 101 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 102 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 103 | * ==================================================================== |
| 104 | * |
| 105 | * This product includes cryptographic software written by Eric Young |
| 106 | * (eay@cryptsoft.com). This product includes software written by Tim |
| 107 | * Hudson (tjh@cryptsoft.com). |
| 108 | * |
| 109 | */ |
| 110 | /* |
| 111 | DTLS code by Eric Rescorla <ekr@rtfm.com> |
| 112 | |
| 113 | Copyright (C) 2006, Network Resonance, Inc. |
| 114 | Copyright (C) 2011, RTFM, Inc. |
| 115 | */ |
| 116 | |
David Benjamin | 9e4e01e | 2015-09-15 01:48:04 -0400 | [diff] [blame] | 117 | #include <openssl/ssl.h> |
| 118 | |
David Benjamin | f0ae170 | 2015-04-07 23:05:04 -0400 | [diff] [blame] | 119 | #include <string.h> |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 120 | |
David Benjamin | 0397309 | 2014-06-24 23:27:17 -0400 | [diff] [blame] | 121 | #include <openssl/bytestring.h> |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 122 | #include <openssl/err.h> |
| 123 | |
David Benjamin | 2ee94aa | 2015-04-07 22:38:30 -0400 | [diff] [blame] | 124 | #include "internal.h" |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 125 | |
| 126 | |
David Benjamin | 86e95b8 | 2017-07-18 16:34:25 -0400 | [diff] [blame] | 127 | using namespace bssl; |
| 128 | |
David Benjamin | c6cc6e7 | 2016-05-10 17:19:00 -0400 | [diff] [blame] | 129 | static const SRTP_PROTECTION_PROFILE kSRTPProfiles[] = { |
Bob Beck | 61725ea | 2024-11-13 17:50:07 +0000 | [diff] [blame] | 130 | {"SRTP_AES128_CM_SHA1_80", SRTP_AES128_CM_SHA1_80}, |
| 131 | {"SRTP_AES128_CM_SHA1_32", SRTP_AES128_CM_SHA1_32}, |
| 132 | {"SRTP_AEAD_AES_128_GCM", SRTP_AEAD_AES_128_GCM}, |
| 133 | {"SRTP_AEAD_AES_256_GCM", SRTP_AEAD_AES_256_GCM}, |
Adam Langley | ce51469 | 2015-10-30 14:19:01 -0700 | [diff] [blame] | 134 | {0, 0}, |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 135 | }; |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 136 | |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 137 | static int find_profile_by_name(const char *profile_name, |
David Benjamin | bc44c08 | 2015-01-01 15:02:11 -0500 | [diff] [blame] | 138 | const SRTP_PROTECTION_PROFILE **pptr, |
| 139 | size_t len) { |
David Benjamin | 86e95b8 | 2017-07-18 16:34:25 -0400 | [diff] [blame] | 140 | const SRTP_PROTECTION_PROFILE *p = kSRTPProfiles; |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 141 | while (p->name) { |
| 142 | if (len == strlen(p->name) && !strncmp(p->name, profile_name, len)) { |
| 143 | *pptr = p; |
| 144 | return 1; |
| 145 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 146 | |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 147 | p++; |
| 148 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 149 | |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 150 | return 0; |
| 151 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 152 | |
David Benjamin | 0ce090a | 2018-07-02 20:24:40 -0400 | [diff] [blame] | 153 | static int ssl_ctx_make_profiles( |
| 154 | const char *profiles_string, |
| 155 | UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> *out) { |
David Benjamin | 38570b2 | 2017-09-21 02:11:35 -0400 | [diff] [blame] | 156 | UniquePtr<STACK_OF(SRTP_PROTECTION_PROFILE)> profiles( |
| 157 | sk_SRTP_PROTECTION_PROFILE_new_null()); |
| 158 | if (profiles == nullptr) { |
David Benjamin | 3570d73 | 2015-06-29 00:28:17 -0400 | [diff] [blame] | 159 | OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES); |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 160 | return 0; |
| 161 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 162 | |
David Benjamin | 5ab4596 | 2016-09-27 01:28:35 -0400 | [diff] [blame] | 163 | const char *col; |
| 164 | const char *ptr = profiles_string; |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 165 | do { |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 166 | col = strchr(ptr, ':'); |
David Benjamin | 5ab4596 | 2016-09-27 01:28:35 -0400 | [diff] [blame] | 167 | |
| 168 | const SRTP_PROTECTION_PROFILE *profile; |
| 169 | if (!find_profile_by_name(ptr, &profile, |
| 170 | col ? (size_t)(col - ptr) : strlen(ptr))) { |
David Benjamin | 3570d73 | 2015-06-29 00:28:17 -0400 | [diff] [blame] | 171 | OPENSSL_PUT_ERROR(SSL, SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE); |
David Benjamin | 38570b2 | 2017-09-21 02:11:35 -0400 | [diff] [blame] | 172 | return 0; |
David Benjamin | 5ab4596 | 2016-09-27 01:28:35 -0400 | [diff] [blame] | 173 | } |
| 174 | |
David Benjamin | 38570b2 | 2017-09-21 02:11:35 -0400 | [diff] [blame] | 175 | if (!sk_SRTP_PROTECTION_PROFILE_push(profiles.get(), profile)) { |
| 176 | return 0; |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 177 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 178 | |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 179 | if (col) { |
| 180 | ptr = col + 1; |
| 181 | } |
| 182 | } while (col); |
David Benjamin | aeb8d00 | 2014-10-27 17:33:35 -0400 | [diff] [blame] | 183 | |
David Benjamin | 0ce090a | 2018-07-02 20:24:40 -0400 | [diff] [blame] | 184 | *out = std::move(profiles); |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 185 | return 1; |
| 186 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 187 | |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 188 | int SSL_CTX_set_srtp_profiles(SSL_CTX *ctx, const char *profiles) { |
| 189 | return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles); |
| 190 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 191 | |
David Benjamin | cfd65b6 | 2015-09-14 01:54:44 -0400 | [diff] [blame] | 192 | int SSL_set_srtp_profiles(SSL *ssl, const char *profiles) { |
David Benjamin | b95d4b4 | 2018-05-02 16:11:34 -0400 | [diff] [blame] | 193 | return ssl->config != nullptr && |
| 194 | ssl_ctx_make_profiles(profiles, &ssl->config->srtp_profiles); |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 195 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 196 | |
David Benjamin | b778b9c | 2021-05-20 11:31:05 -0400 | [diff] [blame] | 197 | const STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(const SSL *ssl) { |
David Benjamin | b95d4b4 | 2018-05-02 16:11:34 -0400 | [diff] [blame] | 198 | if (ssl == nullptr) { |
| 199 | return nullptr; |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 200 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 201 | |
David Benjamin | b95d4b4 | 2018-05-02 16:11:34 -0400 | [diff] [blame] | 202 | if (ssl->config == nullptr) { |
| 203 | assert(0); |
| 204 | return nullptr; |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 205 | } |
David Benjamin | aeb8d00 | 2014-10-27 17:33:35 -0400 | [diff] [blame] | 206 | |
David Benjamin | 0ce090a | 2018-07-02 20:24:40 -0400 | [diff] [blame] | 207 | return ssl->config->srtp_profiles != nullptr |
| 208 | ? ssl->config->srtp_profiles.get() |
| 209 | : ssl->ctx->srtp_profiles.get(); |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 210 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 211 | |
David Benjamin | cfd65b6 | 2015-09-14 01:54:44 -0400 | [diff] [blame] | 212 | const SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *ssl) { |
David Benjamin | fceca8e | 2018-04-12 16:37:19 -0400 | [diff] [blame] | 213 | return ssl->s3->srtp_profile; |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 214 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 215 | |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 216 | int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles) { |
David Benjamin | c11ea942 | 2017-08-29 16:33:21 -0400 | [diff] [blame] | 217 | // This API inverts its return value. |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 218 | return !SSL_CTX_set_srtp_profiles(ctx, profiles); |
| 219 | } |
Adam Langley | 95c29f3 | 2014-06-20 12:00:00 -0700 | [diff] [blame] | 220 | |
David Benjamin | cfd65b6 | 2015-09-14 01:54:44 -0400 | [diff] [blame] | 221 | int SSL_set_tlsext_use_srtp(SSL *ssl, const char *profiles) { |
David Benjamin | c11ea942 | 2017-08-29 16:33:21 -0400 | [diff] [blame] | 222 | // This API inverts its return value. |
David Benjamin | cfd65b6 | 2015-09-14 01:54:44 -0400 | [diff] [blame] | 223 | return !SSL_set_srtp_profiles(ssl, profiles); |
Adam Langley | 2481975 | 2014-12-15 18:42:07 -0800 | [diff] [blame] | 224 | } |