Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 1 | /* ssl/ssl_sess.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 | * |
| 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 | * Copyright 2005 Nokia. All rights reserved. |
| 113 | * |
| 114 | * The portions of the attached software ("Contribution") is developed by |
| 115 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source |
| 116 | * license. |
| 117 | * |
| 118 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of |
| 119 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites |
| 120 | * support (see RFC 4279) to OpenSSL. |
| 121 | * |
| 122 | * No patent licenses or other rights except those expressly stated in |
| 123 | * the OpenSSL open source license shall be deemed granted or received |
| 124 | * expressly, by implication, estoppel, or otherwise. |
| 125 | * |
| 126 | * No assurances are provided by Nokia that the Contribution does not |
| 127 | * infringe the patent or other intellectual property rights of any third |
| 128 | * party or that the license provides you with all the necessary rights |
| 129 | * to make use of the Contribution. |
| 130 | * |
| 131 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN |
| 132 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA |
| 133 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY |
| 134 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR |
| 135 | * OTHERWISE. |
| 136 | */ |
| 137 | |
| 138 | #include <stdio.h> |
| 139 | #include <openssl/lhash.h> |
| 140 | #include <openssl/rand.h> |
| 141 | #ifndef OPENSSL_NO_ENGINE |
| 142 | #include <openssl/engine.h> |
| 143 | #endif |
| 144 | #include "ssl_locl.h" |
| 145 | |
| 146 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); |
| 147 | static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s); |
| 148 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); |
| 149 | |
| 150 | SSL_SESSION *SSL_get_session(const SSL *ssl) |
| 151 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ |
| 152 | { |
| 153 | return(ssl->session); |
| 154 | } |
| 155 | |
| 156 | SSL_SESSION *SSL_get1_session(SSL *ssl) |
| 157 | /* variant of SSL_get_session: caller really gets something */ |
| 158 | { |
| 159 | SSL_SESSION *sess; |
| 160 | /* Need to lock this all up rather than just use CRYPTO_add so that |
| 161 | * somebody doesn't free ssl->session between when we check it's |
| 162 | * non-null and when we up the reference count. */ |
| 163 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION); |
| 164 | sess = ssl->session; |
| 165 | if(sess) |
| 166 | sess->references++; |
| 167 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION); |
| 168 | return(sess); |
| 169 | } |
| 170 | |
| 171 | int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, |
| 172 | CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) |
| 173 | { |
| 174 | return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp, |
| 175 | new_func, dup_func, free_func); |
| 176 | } |
| 177 | |
| 178 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
| 179 | { |
| 180 | return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); |
| 181 | } |
| 182 | |
| 183 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) |
| 184 | { |
| 185 | return(CRYPTO_get_ex_data(&s->ex_data,idx)); |
| 186 | } |
| 187 | |
| 188 | SSL_SESSION *SSL_SESSION_new(void) |
| 189 | { |
| 190 | SSL_SESSION *ss; |
| 191 | |
| 192 | ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION)); |
| 193 | if (ss == NULL) |
| 194 | { |
| 195 | SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE); |
| 196 | return(0); |
| 197 | } |
| 198 | memset(ss,0,sizeof(SSL_SESSION)); |
| 199 | |
| 200 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ |
| 201 | ss->references=1; |
| 202 | ss->timeout=60*5+4; /* 5 minute timeout by default */ |
| 203 | ss->time=(unsigned long)time(NULL); |
| 204 | ss->prev=NULL; |
| 205 | ss->next=NULL; |
| 206 | ss->compress_meth=0; |
| 207 | #ifndef OPENSSL_NO_TLSEXT |
| 208 | ss->tlsext_hostname = NULL; |
| 209 | #ifndef OPENSSL_NO_EC |
| 210 | ss->tlsext_ecpointformatlist_length = 0; |
| 211 | ss->tlsext_ecpointformatlist = NULL; |
| 212 | ss->tlsext_ellipticcurvelist_length = 0; |
| 213 | ss->tlsext_ellipticcurvelist = NULL; |
| 214 | #endif |
| 215 | #endif |
| 216 | CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
| 217 | #ifndef OPENSSL_NO_PSK |
| 218 | ss->psk_identity_hint=NULL; |
| 219 | ss->psk_identity=NULL; |
| 220 | #endif |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 221 | return(ss); |
| 222 | } |
| 223 | |
| 224 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) |
| 225 | { |
| 226 | if(len) |
| 227 | *len = s->session_id_length; |
| 228 | return s->session_id; |
| 229 | } |
| 230 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 231 | /* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1 |
| 232 | * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly |
| 233 | * until we have no conflict is going to complete in one iteration pretty much |
| 234 | * "most" of the time (btw: understatement). So, if it takes us 10 iterations |
| 235 | * and we still can't avoid a conflict - well that's a reasonable point to call |
| 236 | * it quits. Either the RAND code is broken or someone is trying to open roughly |
| 237 | * very close to 2^128 (or 2^256) SSL sessions to our server. How you might |
| 238 | * store that many sessions is perhaps a more interesting question ... */ |
| 239 | |
| 240 | #define MAX_SESS_ID_ATTEMPTS 10 |
| 241 | static int def_generate_session_id(const SSL *ssl, unsigned char *id, |
| 242 | unsigned int *id_len) |
| 243 | { |
| 244 | unsigned int retry = 0; |
| 245 | do |
| 246 | if (RAND_pseudo_bytes(id, *id_len) <= 0) |
| 247 | return 0; |
| 248 | while(SSL_has_matching_session_id(ssl, id, *id_len) && |
| 249 | (++retry < MAX_SESS_ID_ATTEMPTS)); |
| 250 | if(retry < MAX_SESS_ID_ATTEMPTS) |
| 251 | return 1; |
| 252 | /* else - woops a session_id match */ |
| 253 | /* XXX We should also check the external cache -- |
| 254 | * but the probability of a collision is negligible, and |
| 255 | * we could not prevent the concurrent creation of sessions |
| 256 | * with identical IDs since we currently don't have means |
| 257 | * to atomically check whether a session ID already exists |
| 258 | * and make a reservation for it if it does not |
| 259 | * (this problem applies to the internal cache as well). |
| 260 | */ |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | void SSL_set_session_creation_enabled (SSL *s, int creation_enabled) |
| 265 | { |
| 266 | s->session_creation_enabled = creation_enabled; |
| 267 | } |
| 268 | |
| 269 | int ssl_get_new_session(SSL *s, int session) |
| 270 | { |
| 271 | /* This gets used by clients and servers. */ |
| 272 | |
| 273 | unsigned int tmp; |
| 274 | SSL_SESSION *ss=NULL; |
| 275 | GEN_SESSION_CB cb = def_generate_session_id; |
| 276 | |
| 277 | /* caller should check this if they can do better error handling */ |
| 278 | if (!s->session_creation_enabled) return(0); |
| 279 | if ((ss=SSL_SESSION_new()) == NULL) return(0); |
| 280 | |
| 281 | /* If the context has a default timeout, use it */ |
| 282 | if (s->session_ctx->session_timeout == 0) |
| 283 | ss->timeout=SSL_get_default_timeout(s); |
| 284 | else |
| 285 | ss->timeout=s->session_ctx->session_timeout; |
| 286 | |
| 287 | if (s->session != NULL) |
| 288 | { |
| 289 | SSL_SESSION_free(s->session); |
| 290 | s->session=NULL; |
| 291 | } |
| 292 | |
| 293 | if (session) |
| 294 | { |
| 295 | if (s->version == SSL2_VERSION) |
| 296 | { |
| 297 | ss->ssl_version=SSL2_VERSION; |
| 298 | ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; |
| 299 | } |
| 300 | else if (s->version == SSL3_VERSION) |
| 301 | { |
| 302 | ss->ssl_version=SSL3_VERSION; |
| 303 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; |
| 304 | } |
| 305 | else if (s->version == TLS1_VERSION) |
| 306 | { |
| 307 | ss->ssl_version=TLS1_VERSION; |
| 308 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; |
| 309 | } |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 310 | else if (s->version == DTLS1_BAD_VER) |
| 311 | { |
| 312 | ss->ssl_version=DTLS1_BAD_VER; |
| 313 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; |
| 314 | } |
| 315 | else if (s->version == DTLS1_VERSION) |
| 316 | { |
| 317 | ss->ssl_version=DTLS1_VERSION; |
| 318 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; |
| 319 | } |
| 320 | else |
| 321 | { |
| 322 | SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION); |
| 323 | SSL_SESSION_free(ss); |
| 324 | return(0); |
| 325 | } |
| 326 | #ifndef OPENSSL_NO_TLSEXT |
| 327 | /* If RFC4507 ticket use empty session ID */ |
| 328 | if (s->tlsext_ticket_expected) |
| 329 | { |
| 330 | ss->session_id_length = 0; |
| 331 | goto sess_id_done; |
| 332 | } |
| 333 | #endif |
| 334 | /* Choose which callback will set the session ID */ |
| 335 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); |
| 336 | if(s->generate_session_id) |
| 337 | cb = s->generate_session_id; |
| 338 | else if(s->session_ctx->generate_session_id) |
| 339 | cb = s->session_ctx->generate_session_id; |
| 340 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); |
| 341 | /* Choose a session ID */ |
| 342 | tmp = ss->session_id_length; |
| 343 | if(!cb(s, ss->session_id, &tmp)) |
| 344 | { |
| 345 | /* The callback failed */ |
| 346 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, |
| 347 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); |
| 348 | SSL_SESSION_free(ss); |
| 349 | return(0); |
| 350 | } |
| 351 | /* Don't allow the callback to set the session length to zero. |
| 352 | * nor set it higher than it was. */ |
| 353 | if(!tmp || (tmp > ss->session_id_length)) |
| 354 | { |
| 355 | /* The callback set an illegal length */ |
| 356 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, |
| 357 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); |
| 358 | SSL_SESSION_free(ss); |
| 359 | return(0); |
| 360 | } |
| 361 | /* If the session length was shrunk and we're SSLv2, pad it */ |
| 362 | if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION)) |
| 363 | memset(ss->session_id + tmp, 0, ss->session_id_length - tmp); |
| 364 | else |
| 365 | ss->session_id_length = tmp; |
| 366 | /* Finally, check for a conflict */ |
| 367 | if(SSL_has_matching_session_id(s, ss->session_id, |
| 368 | ss->session_id_length)) |
| 369 | { |
| 370 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, |
| 371 | SSL_R_SSL_SESSION_ID_CONFLICT); |
| 372 | SSL_SESSION_free(ss); |
| 373 | return(0); |
| 374 | } |
| 375 | #ifndef OPENSSL_NO_TLSEXT |
| 376 | sess_id_done: |
| 377 | if (s->tlsext_hostname) { |
| 378 | ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname); |
| 379 | if (ss->tlsext_hostname == NULL) { |
| 380 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); |
| 381 | SSL_SESSION_free(ss); |
| 382 | return 0; |
| 383 | } |
| 384 | } |
| 385 | #ifndef OPENSSL_NO_EC |
| 386 | if (s->tlsext_ecpointformatlist) |
| 387 | { |
| 388 | if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist); |
| 389 | if ((ss->tlsext_ecpointformatlist = OPENSSL_malloc(s->tlsext_ecpointformatlist_length)) == NULL) |
| 390 | { |
| 391 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE); |
| 392 | SSL_SESSION_free(ss); |
| 393 | return 0; |
| 394 | } |
| 395 | ss->tlsext_ecpointformatlist_length = s->tlsext_ecpointformatlist_length; |
| 396 | memcpy(ss->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length); |
| 397 | } |
| 398 | if (s->tlsext_ellipticcurvelist) |
| 399 | { |
| 400 | if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist); |
| 401 | if ((ss->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL) |
| 402 | { |
| 403 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE); |
| 404 | SSL_SESSION_free(ss); |
| 405 | return 0; |
| 406 | } |
| 407 | ss->tlsext_ellipticcurvelist_length = s->tlsext_ellipticcurvelist_length; |
| 408 | memcpy(ss->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist_length); |
| 409 | } |
| 410 | #endif |
| 411 | #endif |
| 412 | } |
| 413 | else |
| 414 | { |
| 415 | ss->session_id_length=0; |
| 416 | } |
| 417 | |
| 418 | if (s->sid_ctx_length > sizeof ss->sid_ctx) |
| 419 | { |
| 420 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); |
| 421 | SSL_SESSION_free(ss); |
| 422 | return 0; |
| 423 | } |
| 424 | memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length); |
| 425 | ss->sid_ctx_length=s->sid_ctx_length; |
| 426 | s->session=ss; |
| 427 | ss->ssl_version=s->version; |
| 428 | ss->verify_result = X509_V_OK; |
| 429 | |
| 430 | return(1); |
| 431 | } |
| 432 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 433 | int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len, |
| 434 | const unsigned char *limit) |
| 435 | { |
| 436 | /* This is used only by servers. */ |
| 437 | |
| 438 | SSL_SESSION *ret=NULL; |
| 439 | int fatal = 0; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 440 | #ifndef OPENSSL_NO_TLSEXT |
| 441 | int r; |
| 442 | #endif |
| 443 | |
| 444 | if (len > SSL_MAX_SSL_SESSION_ID_LENGTH) |
| 445 | goto err; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 446 | #ifndef OPENSSL_NO_TLSEXT |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 447 | r = tls1_process_ticket(s, session_id, len, limit, &ret); |
| 448 | if (r == -1) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 449 | { |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 450 | fatal = 1; |
| 451 | goto err; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 452 | } |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 453 | else if (r == 0 || (!ret && !len)) |
| 454 | goto err; |
| 455 | else if (!ret && !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) |
| 456 | #else |
| 457 | if (len == 0) |
| 458 | goto err; |
| 459 | if (!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 460 | #endif |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 461 | { |
| 462 | SSL_SESSION data; |
| 463 | data.ssl_version=s->version; |
| 464 | data.session_id_length=len; |
| 465 | if (len == 0) |
| 466 | return 0; |
| 467 | memcpy(data.session_id,session_id,len); |
| 468 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); |
| 469 | ret=lh_SSL_SESSION_retrieve(s->session_ctx->sessions,&data); |
| 470 | if (ret != NULL) |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 471 | /* don't allow other threads to steal it: */ |
| 472 | CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 473 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 474 | } |
| 475 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 476 | if (ret == NULL) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 477 | { |
| 478 | int copy=1; |
| 479 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 480 | s->session_ctx->stats.sess_miss++; |
| 481 | ret=NULL; |
| 482 | if (s->session_ctx->get_session_cb != NULL |
| 483 | && (ret=s->session_ctx->get_session_cb(s,session_id,len,©)) |
| 484 | != NULL) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 485 | { |
| 486 | s->session_ctx->stats.sess_cb_hit++; |
| 487 | |
| 488 | /* Increment reference count now if the session callback |
| 489 | * asks us to do so (note that if the session structures |
| 490 | * returned by the callback are shared between threads, |
| 491 | * it must handle the reference count itself [i.e. copy == 0], |
| 492 | * or things won't be thread-safe). */ |
| 493 | if (copy) |
| 494 | CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); |
| 495 | |
| 496 | /* Add the externally cached session to the internal |
| 497 | * cache as well if and only if we are supposed to. */ |
| 498 | if(!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE)) |
| 499 | /* The following should not return 1, otherwise, |
| 500 | * things are very strange */ |
| 501 | SSL_CTX_add_session(s->session_ctx,ret); |
| 502 | } |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 503 | if (ret == NULL) |
| 504 | goto err; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 505 | } |
| 506 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 507 | /* Now ret is non-NULL, and we own one of its reference counts. */ |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 508 | |
| 509 | if (ret->sid_ctx_length != s->sid_ctx_length |
| 510 | || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length)) |
| 511 | { |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 512 | /* We've found the session named by the client, but we don't |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 513 | * want to use it in this context. */ |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 514 | |
| 515 | #if 0 /* The client cannot always know when a session is not appropriate, |
| 516 | * so we shouldn't generate an error message. */ |
| 517 | |
| 518 | SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); |
| 519 | #endif |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 520 | goto err; /* treat like cache miss */ |
| 521 | } |
| 522 | |
| 523 | if((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) |
| 524 | { |
| 525 | /* We can't be sure if this session is being used out of |
| 526 | * context, which is especially important for SSL_VERIFY_PEER. |
| 527 | * The application should have used SSL[_CTX]_set_session_id_context. |
| 528 | * |
| 529 | * For this error case, we generate an error instead of treating |
| 530 | * the event like a cache miss (otherwise it would be easy for |
| 531 | * applications to effectively disable the session cache by |
| 532 | * accident without anyone noticing). |
| 533 | */ |
| 534 | |
| 535 | SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); |
| 536 | fatal = 1; |
| 537 | goto err; |
| 538 | } |
| 539 | |
| 540 | if (ret->cipher == NULL) |
| 541 | { |
| 542 | unsigned char buf[5],*p; |
| 543 | unsigned long l; |
| 544 | |
| 545 | p=buf; |
| 546 | l=ret->cipher_id; |
| 547 | l2n(l,p); |
| 548 | if ((ret->ssl_version>>8) >= SSL3_VERSION_MAJOR) |
| 549 | ret->cipher=ssl_get_cipher_by_char(s,&(buf[2])); |
| 550 | else |
| 551 | ret->cipher=ssl_get_cipher_by_char(s,&(buf[1])); |
| 552 | if (ret->cipher == NULL) |
| 553 | goto err; |
| 554 | } |
| 555 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 556 | |
| 557 | #if 0 /* This is way too late. */ |
| 558 | |
| 559 | /* If a thread got the session, then 'swaped', and another got |
| 560 | * it and then due to a time-out decided to 'OPENSSL_free' it we could |
| 561 | * be in trouble. So I'll increment it now, then double decrement |
| 562 | * later - am I speaking rubbish?. */ |
| 563 | CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); |
| 564 | #endif |
| 565 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 566 | if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */ |
| 567 | { |
| 568 | s->session_ctx->stats.sess_timeout++; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 569 | /* remove it from the cache */ |
| 570 | SSL_CTX_remove_session(s->session_ctx,ret); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 571 | goto err; |
| 572 | } |
| 573 | |
| 574 | s->session_ctx->stats.sess_hit++; |
| 575 | |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 576 | /* ret->time=time(NULL); */ /* rezero timeout? */ |
| 577 | /* again, just leave the session |
| 578 | * if it is the same session, we have just incremented and |
| 579 | * then decremented the reference count :-) */ |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 580 | if (s->session != NULL) |
| 581 | SSL_SESSION_free(s->session); |
| 582 | s->session=ret; |
| 583 | s->verify_result = s->session->verify_result; |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 584 | return(1); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 585 | |
| 586 | err: |
| 587 | if (ret != NULL) |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 588 | SSL_SESSION_free(ret); |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 589 | if (fatal) |
| 590 | return -1; |
| 591 | else |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
| 596 | { |
| 597 | int ret=0; |
| 598 | SSL_SESSION *s; |
| 599 | |
| 600 | /* add just 1 reference count for the SSL_CTX's session cache |
| 601 | * even though it has two ways of access: each session is in a |
| 602 | * doubly linked list and an lhash */ |
| 603 | CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION); |
| 604 | /* if session c is in already in cache, we take back the increment later */ |
| 605 | |
| 606 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); |
| 607 | s=lh_SSL_SESSION_insert(ctx->sessions,c); |
| 608 | |
| 609 | /* s != NULL iff we already had a session with the given PID. |
| 610 | * In this case, s == c should hold (then we did not really modify |
| 611 | * ctx->sessions), or we're in trouble. */ |
| 612 | if (s != NULL && s != c) |
| 613 | { |
| 614 | /* We *are* in trouble ... */ |
| 615 | SSL_SESSION_list_remove(ctx,s); |
| 616 | SSL_SESSION_free(s); |
| 617 | /* ... so pretend the other session did not exist in cache |
| 618 | * (we cannot handle two SSL_SESSION structures with identical |
| 619 | * session ID in the same cache, which could happen e.g. when |
| 620 | * two threads concurrently obtain the same session from an external |
| 621 | * cache) */ |
| 622 | s = NULL; |
| 623 | } |
| 624 | |
| 625 | /* Put at the head of the queue unless it is already in the cache */ |
| 626 | if (s == NULL) |
| 627 | SSL_SESSION_list_add(ctx,c); |
| 628 | |
| 629 | if (s != NULL) |
| 630 | { |
| 631 | /* existing cache entry -- decrement previously incremented reference |
| 632 | * count because it already takes into account the cache */ |
| 633 | |
| 634 | SSL_SESSION_free(s); /* s == c */ |
| 635 | ret=0; |
| 636 | } |
| 637 | else |
| 638 | { |
| 639 | /* new cache entry -- remove old ones if cache has become too large */ |
| 640 | |
| 641 | ret=1; |
| 642 | |
| 643 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) |
| 644 | { |
| 645 | while (SSL_CTX_sess_number(ctx) > |
| 646 | SSL_CTX_sess_get_cache_size(ctx)) |
| 647 | { |
| 648 | if (!remove_session_lock(ctx, |
| 649 | ctx->session_cache_tail, 0)) |
| 650 | break; |
| 651 | else |
| 652 | ctx->stats.sess_cache_full++; |
| 653 | } |
| 654 | } |
| 655 | } |
| 656 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); |
| 657 | return(ret); |
| 658 | } |
| 659 | |
| 660 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
| 661 | { |
| 662 | return remove_session_lock(ctx, c, 1); |
| 663 | } |
| 664 | |
| 665 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) |
| 666 | { |
| 667 | SSL_SESSION *r; |
| 668 | int ret=0; |
| 669 | |
| 670 | if ((c != NULL) && (c->session_id_length != 0)) |
| 671 | { |
| 672 | if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); |
| 673 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions,c)) == c) |
| 674 | { |
| 675 | ret=1; |
| 676 | r=lh_SSL_SESSION_delete(ctx->sessions,c); |
| 677 | SSL_SESSION_list_remove(ctx,c); |
| 678 | } |
| 679 | |
| 680 | if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); |
| 681 | |
| 682 | if (ret) |
| 683 | { |
| 684 | r->not_resumable=1; |
| 685 | if (ctx->remove_session_cb != NULL) |
| 686 | ctx->remove_session_cb(ctx,r); |
| 687 | SSL_SESSION_free(r); |
| 688 | } |
| 689 | } |
| 690 | else |
| 691 | ret=0; |
| 692 | return(ret); |
| 693 | } |
| 694 | |
| 695 | void SSL_SESSION_free(SSL_SESSION *ss) |
| 696 | { |
| 697 | int i; |
| 698 | |
| 699 | if(ss == NULL) |
| 700 | return; |
| 701 | |
| 702 | i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION); |
| 703 | #ifdef REF_PRINT |
| 704 | REF_PRINT("SSL_SESSION",ss); |
| 705 | #endif |
| 706 | if (i > 0) return; |
| 707 | #ifdef REF_CHECK |
| 708 | if (i < 0) |
| 709 | { |
| 710 | fprintf(stderr,"SSL_SESSION_free, bad reference count\n"); |
| 711 | abort(); /* ok */ |
| 712 | } |
| 713 | #endif |
| 714 | |
| 715 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
| 716 | |
| 717 | OPENSSL_cleanse(ss->key_arg,sizeof ss->key_arg); |
| 718 | OPENSSL_cleanse(ss->master_key,sizeof ss->master_key); |
| 719 | OPENSSL_cleanse(ss->session_id,sizeof ss->session_id); |
| 720 | if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert); |
| 721 | if (ss->peer != NULL) X509_free(ss->peer); |
| 722 | if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers); |
| 723 | #ifndef OPENSSL_NO_TLSEXT |
| 724 | if (ss->tlsext_hostname != NULL) OPENSSL_free(ss->tlsext_hostname); |
| 725 | if (ss->tlsext_tick != NULL) OPENSSL_free(ss->tlsext_tick); |
| 726 | #ifndef OPENSSL_NO_EC |
| 727 | ss->tlsext_ecpointformatlist_length = 0; |
| 728 | if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist); |
| 729 | ss->tlsext_ellipticcurvelist_length = 0; |
| 730 | if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist); |
| 731 | #endif /* OPENSSL_NO_EC */ |
| 732 | #endif |
| 733 | #ifndef OPENSSL_NO_PSK |
| 734 | if (ss->psk_identity_hint != NULL) |
| 735 | OPENSSL_free(ss->psk_identity_hint); |
| 736 | if (ss->psk_identity != NULL) |
| 737 | OPENSSL_free(ss->psk_identity); |
| 738 | #endif |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 739 | OPENSSL_cleanse(ss,sizeof(*ss)); |
| 740 | OPENSSL_free(ss); |
| 741 | } |
| 742 | |
| 743 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
| 744 | { |
| 745 | int ret=0; |
| 746 | const SSL_METHOD *meth; |
| 747 | |
| 748 | if (session != NULL) |
| 749 | { |
| 750 | meth=s->ctx->method->get_ssl_method(session->ssl_version); |
| 751 | if (meth == NULL) |
| 752 | meth=s->method->get_ssl_method(session->ssl_version); |
| 753 | if (meth == NULL) |
| 754 | { |
| 755 | SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD); |
| 756 | return(0); |
| 757 | } |
| 758 | |
| 759 | if (meth != s->method) |
| 760 | { |
| 761 | if (!SSL_set_ssl_method(s,meth)) |
| 762 | return(0); |
Alexandre Savard | 7541067 | 2012-08-08 09:50:01 -0400 | [diff] [blame] | 763 | if (s->ctx->session_timeout == 0) |
| 764 | session->timeout=SSL_get_default_timeout(s); |
| 765 | else |
| 766 | session->timeout=s->ctx->session_timeout; |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 767 | } |
| 768 | |
| 769 | #ifndef OPENSSL_NO_KRB5 |
| 770 | if (s->kssl_ctx && !s->kssl_ctx->client_princ && |
| 771 | session->krb5_client_princ_len > 0) |
| 772 | { |
| 773 | s->kssl_ctx->client_princ = (char *)OPENSSL_malloc(session->krb5_client_princ_len + 1); |
| 774 | memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ, |
| 775 | session->krb5_client_princ_len); |
| 776 | s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0'; |
| 777 | } |
| 778 | #endif /* OPENSSL_NO_KRB5 */ |
| 779 | |
| 780 | /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/ |
| 781 | CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION); |
| 782 | if (s->session != NULL) |
| 783 | SSL_SESSION_free(s->session); |
| 784 | s->session=session; |
| 785 | s->verify_result = s->session->verify_result; |
| 786 | /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/ |
| 787 | ret=1; |
| 788 | } |
| 789 | else |
| 790 | { |
| 791 | if (s->session != NULL) |
| 792 | { |
| 793 | SSL_SESSION_free(s->session); |
| 794 | s->session=NULL; |
| 795 | } |
| 796 | |
| 797 | meth=s->ctx->method; |
| 798 | if (meth != s->method) |
| 799 | { |
| 800 | if (!SSL_set_ssl_method(s,meth)) |
| 801 | return(0); |
| 802 | } |
| 803 | ret=1; |
| 804 | } |
| 805 | return(ret); |
| 806 | } |
| 807 | |
| 808 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
| 809 | { |
| 810 | if (s == NULL) return(0); |
| 811 | s->timeout=t; |
| 812 | return(1); |
| 813 | } |
| 814 | |
| 815 | long SSL_SESSION_get_timeout(const SSL_SESSION *s) |
| 816 | { |
| 817 | if (s == NULL) return(0); |
| 818 | return(s->timeout); |
| 819 | } |
| 820 | |
| 821 | long SSL_SESSION_get_time(const SSL_SESSION *s) |
| 822 | { |
| 823 | if (s == NULL) return(0); |
| 824 | return(s->time); |
| 825 | } |
| 826 | |
| 827 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
| 828 | { |
| 829 | if (s == NULL) return(0); |
| 830 | s->time=t; |
| 831 | return(t); |
| 832 | } |
| 833 | |
Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 834 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
| 835 | { |
| 836 | long l; |
| 837 | if (s == NULL) return(0); |
| 838 | l=s->session_timeout; |
| 839 | s->session_timeout=t; |
| 840 | return(l); |
| 841 | } |
| 842 | |
| 843 | long SSL_CTX_get_timeout(const SSL_CTX *s) |
| 844 | { |
| 845 | if (s == NULL) return(0); |
| 846 | return(s->session_timeout); |
| 847 | } |
| 848 | |
| 849 | #ifndef OPENSSL_NO_TLSEXT |
| 850 | int SSL_set_session_secret_cb(SSL *s, int (*tls_session_secret_cb)(SSL *s, void *secret, int *secret_len, |
| 851 | STACK_OF(SSL_CIPHER) *peer_ciphers, SSL_CIPHER **cipher, void *arg), void *arg) |
| 852 | { |
| 853 | if (s == NULL) return(0); |
| 854 | s->tls_session_secret_cb = tls_session_secret_cb; |
| 855 | s->tls_session_secret_cb_arg = arg; |
| 856 | return(1); |
| 857 | } |
| 858 | |
| 859 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, |
| 860 | void *arg) |
| 861 | { |
| 862 | if (s == NULL) return(0); |
| 863 | s->tls_session_ticket_ext_cb = cb; |
| 864 | s->tls_session_ticket_ext_cb_arg = arg; |
| 865 | return(1); |
| 866 | } |
| 867 | |
| 868 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) |
| 869 | { |
| 870 | if (s->version >= TLS1_VERSION) |
| 871 | { |
| 872 | if (s->tlsext_session_ticket) |
| 873 | { |
| 874 | OPENSSL_free(s->tlsext_session_ticket); |
| 875 | s->tlsext_session_ticket = NULL; |
| 876 | } |
| 877 | |
| 878 | s->tlsext_session_ticket = OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); |
| 879 | if (!s->tlsext_session_ticket) |
| 880 | { |
| 881 | SSLerr(SSL_F_SSL_SET_SESSION_TICKET_EXT, ERR_R_MALLOC_FAILURE); |
| 882 | return 0; |
| 883 | } |
| 884 | |
| 885 | if (ext_data) |
| 886 | { |
| 887 | s->tlsext_session_ticket->length = ext_len; |
| 888 | s->tlsext_session_ticket->data = s->tlsext_session_ticket + 1; |
| 889 | memcpy(s->tlsext_session_ticket->data, ext_data, ext_len); |
| 890 | } |
| 891 | else |
| 892 | { |
| 893 | s->tlsext_session_ticket->length = 0; |
| 894 | s->tlsext_session_ticket->data = NULL; |
| 895 | } |
| 896 | |
| 897 | return 1; |
| 898 | } |
| 899 | |
| 900 | return 0; |
| 901 | } |
| 902 | #endif /* OPENSSL_NO_TLSEXT */ |
| 903 | |
| 904 | typedef struct timeout_param_st |
| 905 | { |
| 906 | SSL_CTX *ctx; |
| 907 | long time; |
| 908 | LHASH_OF(SSL_SESSION) *cache; |
| 909 | } TIMEOUT_PARAM; |
| 910 | |
| 911 | static void timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p) |
| 912 | { |
| 913 | if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */ |
| 914 | { |
| 915 | /* The reason we don't call SSL_CTX_remove_session() is to |
| 916 | * save on locking overhead */ |
| 917 | (void)lh_SSL_SESSION_delete(p->cache,s); |
| 918 | SSL_SESSION_list_remove(p->ctx,s); |
| 919 | s->not_resumable=1; |
| 920 | if (p->ctx->remove_session_cb != NULL) |
| 921 | p->ctx->remove_session_cb(p->ctx,s); |
| 922 | SSL_SESSION_free(s); |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION, TIMEOUT_PARAM) |
| 927 | |
| 928 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
| 929 | { |
| 930 | unsigned long i; |
| 931 | TIMEOUT_PARAM tp; |
| 932 | |
| 933 | tp.ctx=s; |
| 934 | tp.cache=s->sessions; |
| 935 | if (tp.cache == NULL) return; |
| 936 | tp.time=t; |
| 937 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); |
| 938 | i=CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load; |
| 939 | CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=0; |
| 940 | lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout), |
| 941 | TIMEOUT_PARAM, &tp); |
| 942 | CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=i; |
| 943 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); |
| 944 | } |
| 945 | |
| 946 | int ssl_clear_bad_session(SSL *s) |
| 947 | { |
| 948 | if ( (s->session != NULL) && |
| 949 | !(s->shutdown & SSL_SENT_SHUTDOWN) && |
| 950 | !(SSL_in_init(s) || SSL_in_before(s))) |
| 951 | { |
| 952 | SSL_CTX_remove_session(s->ctx,s->session); |
| 953 | return(1); |
| 954 | } |
| 955 | else |
| 956 | return(0); |
| 957 | } |
| 958 | |
| 959 | /* locked by SSL_CTX in the calling function */ |
| 960 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
| 961 | { |
| 962 | if ((s->next == NULL) || (s->prev == NULL)) return; |
| 963 | |
| 964 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) |
| 965 | { /* last element in list */ |
| 966 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) |
| 967 | { /* only one element in list */ |
| 968 | ctx->session_cache_head=NULL; |
| 969 | ctx->session_cache_tail=NULL; |
| 970 | } |
| 971 | else |
| 972 | { |
| 973 | ctx->session_cache_tail=s->prev; |
| 974 | s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail); |
| 975 | } |
| 976 | } |
| 977 | else |
| 978 | { |
| 979 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) |
| 980 | { /* first element in list */ |
| 981 | ctx->session_cache_head=s->next; |
| 982 | s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head); |
| 983 | } |
| 984 | else |
| 985 | { /* middle of list */ |
| 986 | s->next->prev=s->prev; |
| 987 | s->prev->next=s->next; |
| 988 | } |
| 989 | } |
| 990 | s->prev=s->next=NULL; |
| 991 | } |
| 992 | |
| 993 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
| 994 | { |
| 995 | if ((s->next != NULL) && (s->prev != NULL)) |
| 996 | SSL_SESSION_list_remove(ctx,s); |
| 997 | |
| 998 | if (ctx->session_cache_head == NULL) |
| 999 | { |
| 1000 | ctx->session_cache_head=s; |
| 1001 | ctx->session_cache_tail=s; |
| 1002 | s->prev=(SSL_SESSION *)&(ctx->session_cache_head); |
| 1003 | s->next=(SSL_SESSION *)&(ctx->session_cache_tail); |
| 1004 | } |
| 1005 | else |
| 1006 | { |
| 1007 | s->next=ctx->session_cache_head; |
| 1008 | s->next->prev=s; |
| 1009 | s->prev=(SSL_SESSION *)&(ctx->session_cache_head); |
| 1010 | ctx->session_cache_head=s; |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
| 1015 | int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess)) |
| 1016 | { |
| 1017 | ctx->new_session_cb=cb; |
| 1018 | } |
| 1019 | |
| 1020 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess) |
| 1021 | { |
| 1022 | return ctx->new_session_cb; |
| 1023 | } |
| 1024 | |
| 1025 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, |
| 1026 | void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess)) |
| 1027 | { |
| 1028 | ctx->remove_session_cb=cb; |
| 1029 | } |
| 1030 | |
| 1031 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess) |
| 1032 | { |
| 1033 | return ctx->remove_session_cb; |
| 1034 | } |
| 1035 | |
| 1036 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, |
| 1037 | SSL_SESSION *(*cb)(struct ssl_st *ssl, |
| 1038 | unsigned char *data,int len,int *copy)) |
| 1039 | { |
| 1040 | ctx->get_session_cb=cb; |
| 1041 | } |
| 1042 | |
| 1043 | SSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, |
| 1044 | unsigned char *data,int len,int *copy) |
| 1045 | { |
| 1046 | return ctx->get_session_cb; |
| 1047 | } |
| 1048 | |
| 1049 | void SSL_CTX_set_info_callback(SSL_CTX *ctx, |
| 1050 | void (*cb)(const SSL *ssl,int type,int val)) |
| 1051 | { |
| 1052 | ctx->info_callback=cb; |
| 1053 | } |
| 1054 | |
| 1055 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val) |
| 1056 | { |
| 1057 | return ctx->info_callback; |
| 1058 | } |
| 1059 | |
| 1060 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, |
| 1061 | int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey)) |
| 1062 | { |
| 1063 | ctx->client_cert_cb=cb; |
| 1064 | } |
| 1065 | |
| 1066 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey) |
| 1067 | { |
| 1068 | return ctx->client_cert_cb; |
| 1069 | } |
| 1070 | |
| 1071 | #ifndef OPENSSL_NO_ENGINE |
| 1072 | int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e) |
| 1073 | { |
| 1074 | if (!ENGINE_init(e)) |
| 1075 | { |
| 1076 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB); |
| 1077 | return 0; |
| 1078 | } |
| 1079 | if(!ENGINE_get_ssl_client_cert_function(e)) |
| 1080 | { |
| 1081 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, SSL_R_NO_CLIENT_CERT_METHOD); |
| 1082 | ENGINE_finish(e); |
| 1083 | return 0; |
| 1084 | } |
| 1085 | ctx->client_cert_engine = e; |
| 1086 | return 1; |
| 1087 | } |
| 1088 | #endif |
| 1089 | |
| 1090 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, |
| 1091 | int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)) |
| 1092 | { |
| 1093 | ctx->app_gen_cookie_cb=cb; |
| 1094 | } |
| 1095 | |
| 1096 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, |
| 1097 | int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)) |
| 1098 | { |
| 1099 | ctx->app_verify_cookie_cb=cb; |
| 1100 | } |
| 1101 | |
| 1102 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) |