d1_srtp.c (273149) | d1_srtp.c (280304) |
---|---|
1/* ssl/t1_lib.c */ 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. | 1/* ssl/t1_lib.c */ 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 * | 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). | 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 * | 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. | 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 * | 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 :-). | 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 | 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)" | 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
40 * | 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. | 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 * | 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 | 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. | 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: --- 29 unchanged lines hidden (view full) --- 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/* | 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: --- 29 unchanged lines hidden (view full) --- 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 | 112 * DTLS code by Eric Rescorla <ekr@rtfm.com> 113 * 114 * Copyright (C) 2006, Network Resonance, Inc. Copyright (C) 2011, RTFM, Inc. 115 */ |
113 | 116 |
114 Copyright (C) 2006, Network Resonance, Inc. 115 Copyright (C) 2011, RTFM, Inc. 116*/ 117 | |
118#include <stdio.h> 119#include <openssl/objects.h> 120#include "ssl_locl.h" 121 122#ifndef OPENSSL_NO_SRTP 123 | 117#include <stdio.h> 118#include <openssl/objects.h> 119#include "ssl_locl.h" 120 121#ifndef OPENSSL_NO_SRTP 122 |
124#include "srtp.h" | 123# include "srtp.h" |
125 | 124 |
126 127static SRTP_PROTECTION_PROFILE srtp_known_profiles[]= | 125static SRTP_PROTECTION_PROFILE srtp_known_profiles[] = { |
128 { | 126 { |
127 "SRTP_AES128_CM_SHA1_80", 128 SRTP_AES128_CM_SHA1_80, 129 }, |
|
129 { | 130 { |
130 "SRTP_AES128_CM_SHA1_80", 131 SRTP_AES128_CM_SHA1_80, 132 }, | 131 "SRTP_AES128_CM_SHA1_32", 132 SRTP_AES128_CM_SHA1_32, 133 }, 134# if 0 |
133 { | 135 { |
134 "SRTP_AES128_CM_SHA1_32", 135 SRTP_AES128_CM_SHA1_32, 136 }, 137#if 0 | 136 "SRTP_NULL_SHA1_80", 137 SRTP_NULL_SHA1_80, 138 }, |
138 { | 139 { |
139 "SRTP_NULL_SHA1_80", 140 SRTP_NULL_SHA1_80, 141 }, 142 { 143 "SRTP_NULL_SHA1_32", 144 SRTP_NULL_SHA1_32, 145 }, 146#endif | 140 "SRTP_NULL_SHA1_32", 141 SRTP_NULL_SHA1_32, 142 }, 143# endif |
147 {0} | 144 {0} |
148 }; | 145}; |
149 150static int find_profile_by_name(char *profile_name, | 146 147static int find_profile_by_name(char *profile_name, |
151 SRTP_PROTECTION_PROFILE **pptr,unsigned len) 152 { 153 SRTP_PROTECTION_PROFILE *p; | 148 SRTP_PROTECTION_PROFILE **pptr, unsigned len) 149{ 150 SRTP_PROTECTION_PROFILE *p; |
154 | 151 |
155 p=srtp_known_profiles; 156 while(p->name) 157 { 158 if((len == strlen(p->name)) && !strncmp(p->name,profile_name, 159 len)) 160 { 161 *pptr=p; 162 return 0; 163 } | 152 p = srtp_known_profiles; 153 while (p->name) { 154 if ((len == strlen(p->name)) && !strncmp(p->name, profile_name, len)) { 155 *pptr = p; 156 return 0; 157 } |
164 | 158 |
165 p++; 166 } | 159 p++; 160 } |
167 | 161 |
168 return 1; 169 } | 162 return 1; 163} |
170 | 164 |
171static int ssl_ctx_make_profiles(const char *profiles_string,STACK_OF(SRTP_PROTECTION_PROFILE) **out) 172 { 173 STACK_OF(SRTP_PROTECTION_PROFILE) *profiles; | 165static int ssl_ctx_make_profiles(const char *profiles_string, 166 STACK_OF(SRTP_PROTECTION_PROFILE) **out) 167{ 168 STACK_OF(SRTP_PROTECTION_PROFILE) *profiles; |
174 | 169 |
175 char *col; 176 char *ptr=(char *)profiles_string; 177 178 SRTP_PROTECTION_PROFILE *p; | 170 char *col; 171 char *ptr = (char *)profiles_string; |
179 | 172 |
180 if(!(profiles=sk_SRTP_PROTECTION_PROFILE_new_null())) 181 { 182 SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES, SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES); 183 return 1; 184 } 185 186 do 187 { 188 col=strchr(ptr,':'); | 173 SRTP_PROTECTION_PROFILE *p; |
189 | 174 |
190 if(!find_profile_by_name(ptr,&p, 191 col ? col-ptr : (int)strlen(ptr))) 192 { 193 if (sk_SRTP_PROTECTION_PROFILE_find(profiles,p) >= 0) 194 { 195 SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 196 sk_SRTP_PROTECTION_PROFILE_free(profiles); 197 return 1; 198 } | 175 if (!(profiles = sk_SRTP_PROTECTION_PROFILE_new_null())) { 176 SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES, 177 SSL_R_SRTP_COULD_NOT_ALLOCATE_PROFILES); 178 return 1; 179 } |
199 | 180 |
200 sk_SRTP_PROTECTION_PROFILE_push(profiles,p); 201 } 202 else 203 { 204 SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES,SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE); 205 sk_SRTP_PROTECTION_PROFILE_free(profiles); 206 return 1; 207 } | 181 do { 182 col = strchr(ptr, ':'); |
208 | 183 |
209 if(col) ptr=col+1; 210 } while (col); | 184 if (!find_profile_by_name(ptr, &p, 185 col ? col - ptr : (int)strlen(ptr))) { 186 if (sk_SRTP_PROTECTION_PROFILE_find(profiles, p) >= 0) { 187 SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES, 188 SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 189 sk_SRTP_PROTECTION_PROFILE_free(profiles); 190 return 1; 191 } |
211 | 192 |
212 *out=profiles; 213 214 return 0; 215 } 216 217int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx,const char *profiles) 218 { 219 return ssl_ctx_make_profiles(profiles,&ctx->srtp_profiles); 220 } | 193 sk_SRTP_PROTECTION_PROFILE_push(profiles, p); 194 } else { 195 SSLerr(SSL_F_SSL_CTX_MAKE_PROFILES, 196 SSL_R_SRTP_UNKNOWN_PROTECTION_PROFILE); 197 sk_SRTP_PROTECTION_PROFILE_free(profiles); 198 return 1; 199 } |
221 | 200 |
222int SSL_set_tlsext_use_srtp(SSL *s,const char *profiles) 223 { 224 return ssl_ctx_make_profiles(profiles,&s->srtp_profiles); 225 } | 201 if (col) 202 ptr = col + 1; 203 } while (col); |
226 | 204 |
205 *out = profiles; |
|
227 | 206 |
207 return 0; 208} 209 210int SSL_CTX_set_tlsext_use_srtp(SSL_CTX *ctx, const char *profiles) 211{ 212 return ssl_ctx_make_profiles(profiles, &ctx->srtp_profiles); 213} 214 215int SSL_set_tlsext_use_srtp(SSL *s, const char *profiles) 216{ 217 return ssl_ctx_make_profiles(profiles, &s->srtp_profiles); 218} 219 |
|
228STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(SSL *s) | 220STACK_OF(SRTP_PROTECTION_PROFILE) *SSL_get_srtp_profiles(SSL *s) |
229 { 230 if(s != NULL) 231 { 232 if(s->srtp_profiles != NULL) 233 { 234 return s->srtp_profiles; 235 } 236 else if((s->ctx != NULL) && 237 (s->ctx->srtp_profiles != NULL)) 238 { 239 return s->ctx->srtp_profiles; 240 } 241 } | 221{ 222 if (s != NULL) { 223 if (s->srtp_profiles != NULL) { 224 return s->srtp_profiles; 225 } else if ((s->ctx != NULL) && (s->ctx->srtp_profiles != NULL)) { 226 return s->ctx->srtp_profiles; 227 } 228 } |
242 | 229 |
243 return NULL; 244 } | 230 return NULL; 231} |
245 246SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *s) | 232 233SRTP_PROTECTION_PROFILE *SSL_get_selected_srtp_profile(SSL *s) |
247 { 248 return s->srtp_profile; 249 } | 234{ 235 return s->srtp_profile; 236} |
250 | 237 |
251/* Note: this function returns 0 length if there are no 252 profiles specified */ 253int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen) 254 { 255 int ct=0; 256 int i; 257 STACK_OF(SRTP_PROTECTION_PROFILE) *clnt=0; 258 SRTP_PROTECTION_PROFILE *prof; 259 260 clnt=SSL_get_srtp_profiles(s); 261 ct=sk_SRTP_PROTECTION_PROFILE_num(clnt); /* -1 if clnt == 0 */ | 238/* 239 * Note: this function returns 0 length if there are no profiles specified 240 */ 241int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, 242 int maxlen) 243{ 244 int ct = 0; 245 int i; 246 STACK_OF(SRTP_PROTECTION_PROFILE) *clnt = 0; 247 SRTP_PROTECTION_PROFILE *prof; |
262 | 248 |
263 if(p) 264 { 265 if(ct==0) 266 { 267 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT,SSL_R_EMPTY_SRTP_PROTECTION_PROFILE_LIST); 268 return 1; 269 } | 249 clnt = SSL_get_srtp_profiles(s); 250 ct = sk_SRTP_PROTECTION_PROFILE_num(clnt); /* -1 if clnt == 0 */ |
270 | 251 |
271 if((2 + ct*2 + 1) > maxlen) 272 { 273 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT,SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG); 274 return 1; 275 } | 252 if (p) { 253 if (ct == 0) { 254 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT, 255 SSL_R_EMPTY_SRTP_PROTECTION_PROFILE_LIST); 256 return 1; 257 } |
276 | 258 |
277 /* Add the length */ 278 s2n(ct * 2, p); 279 for(i=0;i<ct;i++) 280 { 281 prof=sk_SRTP_PROTECTION_PROFILE_value(clnt,i); 282 s2n(prof->id,p); 283 } | 259 if ((2 + ct * 2 + 1) > maxlen) { 260 SSLerr(SSL_F_SSL_ADD_CLIENTHELLO_USE_SRTP_EXT, 261 SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG); 262 return 1; 263 } |
284 | 264 |
285 /* Add an empty use_mki value */ 286 *p++ = 0; 287 } | 265 /* Add the length */ 266 s2n(ct * 2, p); 267 for (i = 0; i < ct; i++) { 268 prof = sk_SRTP_PROTECTION_PROFILE_value(clnt, i); 269 s2n(prof->id, p); 270 } |
288 | 271 |
289 *len=2 + ct*2 + 1; 290 291 return 0; 292 } | 272 /* Add an empty use_mki value */ 273 *p++ = 0; 274 } |
293 | 275 |
276 *len = 2 + ct * 2 + 1; |
|
294 | 277 |
295int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al) 296 { 297 SRTP_PROTECTION_PROFILE *sprof; 298 STACK_OF(SRTP_PROTECTION_PROFILE) *srvr; 299 int ct; 300 int mki_len; 301 int i, srtp_pref; 302 unsigned int id; | 278 return 0; 279} |
303 | 280 |
304 /* Length value + the MKI length */ 305 if(len < 3) 306 { 307 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 308 *al=SSL_AD_DECODE_ERROR; 309 return 1; 310 } | 281int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len, 282 int *al) 283{ 284 SRTP_PROTECTION_PROFILE *sprof; 285 STACK_OF(SRTP_PROTECTION_PROFILE) *srvr; 286 int ct; 287 int mki_len; 288 int i, srtp_pref; 289 unsigned int id; |
311 | 290 |
312 /* Pull off the length of the cipher suite list */ 313 n2s(d, ct); | 291 /* Length value + the MKI length */ 292 if (len < 3) { 293 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT, 294 SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 295 *al = SSL_AD_DECODE_ERROR; 296 return 1; 297 } 298 299 /* Pull off the length of the cipher suite list */ 300 n2s(d, ct); 301 len -= 2; 302 303 /* Check that it is even */ 304 if (ct % 2) { 305 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT, 306 SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 307 *al = SSL_AD_DECODE_ERROR; 308 return 1; 309 } 310 311 /* Check that lengths are consistent */ 312 if (len < (ct + 1)) { 313 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT, 314 SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 315 *al = SSL_AD_DECODE_ERROR; 316 return 1; 317 } 318 319 srvr = SSL_get_srtp_profiles(s); 320 s->srtp_profile = NULL; 321 /* Search all profiles for a match initially */ 322 srtp_pref = sk_SRTP_PROTECTION_PROFILE_num(srvr); 323 324 while (ct) { 325 n2s(d, id); 326 ct -= 2; |
314 len -= 2; | 327 len -= 2; |
315 316 /* Check that it is even */ 317 if(ct%2) 318 { 319 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 320 *al=SSL_AD_DECODE_ERROR; 321 return 1; 322 } 323 324 /* Check that lengths are consistent */ 325 if(len < (ct + 1)) 326 { 327 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 328 *al=SSL_AD_DECODE_ERROR; 329 return 1; 330 } | |
331 | 328 |
332 srvr=SSL_get_srtp_profiles(s); 333 s->srtp_profile = NULL; 334 /* Search all profiles for a match initially */ 335 srtp_pref = sk_SRTP_PROTECTION_PROFILE_num(srvr); 336 337 while(ct) 338 { 339 n2s(d,id); 340 ct-=2; 341 len-=2; | 329 /* 330 * Only look for match in profiles of higher preference than 331 * current match. 332 * If no profiles have been have been configured then this 333 * does nothing. 334 */ 335 for (i = 0; i < srtp_pref; i++) { 336 sprof = sk_SRTP_PROTECTION_PROFILE_value(srvr, i); 337 if (sprof->id == id) { 338 s->srtp_profile = sprof; 339 srtp_pref = i; 340 break; 341 } 342 } 343 } |
342 | 344 |
343 /* 344 * Only look for match in profiles of higher preference than 345 * current match. 346 * If no profiles have been have been configured then this 347 * does nothing. 348 */ 349 for (i = 0; i < srtp_pref; i++) 350 { 351 sprof = sk_SRTP_PROTECTION_PROFILE_value(srvr, i); 352 if (sprof->id == id) 353 { 354 s->srtp_profile = sprof; 355 srtp_pref = i; 356 break; 357 } 358 } 359 } | 345 /* 346 * Now extract the MKI value as a sanity check, but discard it for now 347 */ 348 mki_len = *d; 349 d++; 350 len--; |
360 | 351 |
361 /* Now extract the MKI value as a sanity check, but discard it for now */ 362 mki_len = *d; 363 d++; len--; | 352 if (mki_len != len) { 353 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT, 354 SSL_R_BAD_SRTP_MKI_VALUE); 355 *al = SSL_AD_DECODE_ERROR; 356 return 1; 357 } |
364 | 358 |
365 if (mki_len != len) 366 { 367 SSLerr(SSL_F_SSL_PARSE_CLIENTHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_MKI_VALUE); 368 *al=SSL_AD_DECODE_ERROR; 369 return 1; 370 } | 359 return 0; 360} |
371 | 361 |
372 return 0; 373 } | 362int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, 363 int maxlen) 364{ 365 if (p) { 366 if (maxlen < 5) { 367 SSLerr(SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT, 368 SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG); 369 return 1; 370 } |
374 | 371 |
375int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen) 376 { 377 if(p) 378 { 379 if(maxlen < 5) 380 { 381 SSLerr(SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT,SSL_R_SRTP_PROTECTION_PROFILE_LIST_TOO_LONG); 382 return 1; 383 } | 372 if (s->srtp_profile == 0) { 373 SSLerr(SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT, 374 SSL_R_USE_SRTP_NOT_NEGOTIATED); 375 return 1; 376 } 377 s2n(2, p); 378 s2n(s->srtp_profile->id, p); 379 *p++ = 0; 380 } 381 *len = 5; |
384 | 382 |
385 if(s->srtp_profile==0) 386 { 387 SSLerr(SSL_F_SSL_ADD_SERVERHELLO_USE_SRTP_EXT,SSL_R_USE_SRTP_NOT_NEGOTIATED); 388 return 1; 389 } 390 s2n(2, p); 391 s2n(s->srtp_profile->id,p); 392 *p++ = 0; 393 } 394 *len=5; 395 396 return 0; 397 } 398 | 383 return 0; 384} |
399 | 385 |
400int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al) 401 { 402 unsigned id; 403 int i; 404 int ct; | 386int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len, 387 int *al) 388{ 389 unsigned id; 390 int i; 391 int ct; |
405 | 392 |
406 STACK_OF(SRTP_PROTECTION_PROFILE) *clnt; 407 SRTP_PROTECTION_PROFILE *prof; | 393 STACK_OF(SRTP_PROTECTION_PROFILE) *clnt; 394 SRTP_PROTECTION_PROFILE *prof; |
408 | 395 |
409 if(len!=5) 410 { 411 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 412 *al=SSL_AD_DECODE_ERROR; 413 return 1; 414 } | 396 if (len != 5) { 397 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT, 398 SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 399 *al = SSL_AD_DECODE_ERROR; 400 return 1; 401 } |
415 | 402 |
416 n2s(d, ct); 417 if(ct!=2) 418 { 419 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 420 *al=SSL_AD_DECODE_ERROR; 421 return 1; 422 } | 403 n2s(d, ct); 404 if (ct != 2) { 405 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT, 406 SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 407 *al = SSL_AD_DECODE_ERROR; 408 return 1; 409 } |
423 | 410 |
424 n2s(d,id); 425 if (*d) /* Must be no MKI, since we never offer one */ 426 { 427 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_MKI_VALUE); 428 *al=SSL_AD_ILLEGAL_PARAMETER; 429 return 1; 430 } | 411 n2s(d, id); 412 if (*d) { /* Must be no MKI, since we never offer one */ 413 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT, 414 SSL_R_BAD_SRTP_MKI_VALUE); 415 *al = SSL_AD_ILLEGAL_PARAMETER; 416 return 1; 417 } |
431 | 418 |
432 clnt=SSL_get_srtp_profiles(s); | 419 clnt = SSL_get_srtp_profiles(s); |
433 | 420 |
434 /* Throw an error if the server gave us an unsolicited extension */ 435 if (clnt == NULL) 436 { 437 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_NO_SRTP_PROFILES); 438 *al=SSL_AD_DECODE_ERROR; 439 return 1; 440 } 441 442 /* Check to see if the server gave us something we support 443 (and presumably offered) 444 */ 445 for(i=0;i<sk_SRTP_PROTECTION_PROFILE_num(clnt);i++) 446 { 447 prof=sk_SRTP_PROTECTION_PROFILE_value(clnt,i); 448 449 if(prof->id == id) 450 { 451 s->srtp_profile=prof; 452 *al=0; 453 return 0; 454 } 455 } | 421 /* Throw an error if the server gave us an unsolicited extension */ 422 if (clnt == NULL) { 423 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT, 424 SSL_R_NO_SRTP_PROFILES); 425 *al = SSL_AD_DECODE_ERROR; 426 return 1; 427 } |
456 | 428 |
457 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT,SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 458 *al=SSL_AD_DECODE_ERROR; 459 return 1; 460 } | 429 /* 430 * Check to see if the server gave us something we support (and 431 * presumably offered) 432 */ 433 for (i = 0; i < sk_SRTP_PROTECTION_PROFILE_num(clnt); i++) { 434 prof = sk_SRTP_PROTECTION_PROFILE_value(clnt, i); |
461 | 435 |
436 if (prof->id == id) { 437 s->srtp_profile = prof; 438 *al = 0; 439 return 0; 440 } 441 } |
|
462 | 442 |
443 SSLerr(SSL_F_SSL_PARSE_SERVERHELLO_USE_SRTP_EXT, 444 SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST); 445 *al = SSL_AD_DECODE_ERROR; 446 return 1; 447} 448 |
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463#endif | 449#endif |