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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
0f113f3e | 7 | * |
d02b48c6 RE |
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). | |
0f113f3e | 14 | * |
d02b48c6 RE |
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. | |
0f113f3e | 21 | * |
d02b48c6 RE |
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 :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
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. | |
0f113f3e | 51 | * |
d02b48c6 RE |
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 | */ | |
f1fd4544 BM |
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 | |
0f113f3e | 65 | * notice, this list of conditions and the following disclaimer. |
f1fd4544 BM |
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 | */ | |
ddac1974 NL |
110 | /* ==================================================================== |
111 | * Copyright 2005 Nokia. All rights reserved. | |
112 | * | |
113 | * The portions of the attached software ("Contribution") is developed by | |
114 | * Nokia Corporation and is licensed pursuant to the OpenSSL open source | |
115 | * license. | |
116 | * | |
117 | * The Contribution, originally written by Mika Kousa and Pasi Eronen of | |
118 | * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites | |
119 | * support (see RFC 4279) to OpenSSL. | |
120 | * | |
121 | * No patent licenses or other rights except those expressly stated in | |
122 | * the OpenSSL open source license shall be deemed granted or received | |
123 | * expressly, by implication, estoppel, or otherwise. | |
124 | * | |
125 | * No assurances are provided by Nokia that the Contribution does not | |
126 | * infringe the patent or other intellectual property rights of any third | |
127 | * party or that the license provides you with all the necessary rights | |
128 | * to make use of the Contribution. | |
129 | * | |
130 | * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN | |
131 | * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA | |
132 | * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY | |
133 | * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR | |
134 | * OTHERWISE. | |
135 | */ | |
d02b48c6 RE |
136 | |
137 | #include <stdio.h> | |
ec577822 BM |
138 | #include <openssl/lhash.h> |
139 | #include <openssl/rand.h> | |
368888bc | 140 | #ifndef OPENSSL_NO_ENGINE |
0f113f3e | 141 | # include <openssl/engine.h> |
368888bc | 142 | #endif |
d02b48c6 RE |
143 | #include "ssl_locl.h" |
144 | ||
58964a49 | 145 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); |
0f113f3e | 146 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s); |
801294f8 | 147 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); |
58964a49 | 148 | |
0821bcd4 | 149 | SSL_SESSION *SSL_get_session(const SSL *ssl) |
52732b38 | 150 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ |
0f113f3e MC |
151 | { |
152 | return (ssl->session); | |
153 | } | |
52732b38 BM |
154 | |
155 | SSL_SESSION *SSL_get1_session(SSL *ssl) | |
156 | /* variant of SSL_get_session: caller really gets something */ | |
0f113f3e MC |
157 | { |
158 | SSL_SESSION *sess; | |
159 | /* | |
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 non-null | |
162 | * and when we up the reference count. | |
163 | */ | |
164 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION); | |
165 | sess = ssl->session; | |
166 | if (sess) | |
167 | sess->references++; | |
168 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION); | |
169 | return (sess); | |
170 | } | |
171 | ||
6b691a5c | 172 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
0f113f3e MC |
173 | { |
174 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
175 | } | |
58964a49 | 176 | |
0821bcd4 | 177 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) |
0f113f3e MC |
178 | { |
179 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
180 | } | |
58964a49 | 181 | |
6b691a5c | 182 | SSL_SESSION *SSL_SESSION_new(void) |
0f113f3e MC |
183 | { |
184 | SSL_SESSION *ss; | |
185 | ||
b51bce94 | 186 | ss = OPENSSL_zalloc(sizeof(*ss)); |
0f113f3e MC |
187 | if (ss == NULL) { |
188 | SSLerr(SSL_F_SSL_SESSION_NEW, ERR_R_MALLOC_FAILURE); | |
64b25758 | 189 | return (NULL); |
0f113f3e | 190 | } |
0f113f3e MC |
191 | |
192 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ | |
193 | ss->references = 1; | |
194 | ss->timeout = 60 * 5 + 4; /* 5 minute timeout by default */ | |
195 | ss->time = (unsigned long)time(NULL); | |
0f113f3e | 196 | CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
0f113f3e MC |
197 | return (ss); |
198 | } | |
d02b48c6 | 199 | |
98ece4ee MC |
200 | /* |
201 | * Create a new SSL_SESSION and duplicate the contents of |src| into it. If | |
202 | * ticket == 0 then no ticket information is duplicated, otherwise it is. | |
203 | */ | |
204 | SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket) | |
205 | { | |
206 | SSL_SESSION *dest; | |
207 | ||
208 | dest = OPENSSL_malloc(sizeof(*src)); | |
209 | if (dest == NULL) { | |
210 | goto err; | |
211 | } | |
212 | memcpy(dest, src, sizeof(*dest)); | |
213 | ||
708cf593 MC |
214 | /* |
215 | * Set the various pointers to NULL so that we can call SSL_SESSION_free in | |
216 | * the case of an error whilst halfway through constructing dest | |
217 | */ | |
218 | #ifndef OPENSSL_NO_PSK | |
219 | dest->psk_identity_hint = NULL; | |
220 | dest->psk_identity = NULL; | |
221 | #endif | |
222 | dest->ciphers = NULL; | |
223 | dest->tlsext_hostname = NULL; | |
224 | #ifndef OPENSSL_NO_EC | |
225 | dest->tlsext_ecpointformatlist = NULL; | |
226 | dest->tlsext_ellipticcurvelist = NULL; | |
227 | #endif | |
228 | dest->tlsext_tick = NULL; | |
229 | #ifndef OPENSSL_NO_SRP | |
230 | dest->srp_username = NULL; | |
231 | #endif | |
232 | memset(&dest->ex_data, 0, sizeof(dest->ex_data)); | |
233 | ||
234 | /* We deliberately don't copy the prev and next pointers */ | |
235 | dest->prev = NULL; | |
236 | dest->next = NULL; | |
237 | ||
238 | dest->references = 1; | |
239 | ||
708cf593 | 240 | if (src->peer != NULL) |
05f0fb9f | 241 | X509_up_ref(src->peer); |
708cf593 | 242 | |
36f038f1 DSH |
243 | if (src->peer_chain != NULL) { |
244 | dest->peer_chain = X509_chain_up_ref(src->peer_chain); | |
245 | if (dest->peer_chain == NULL) | |
246 | goto err; | |
247 | } | |
248 | ||
98ece4ee MC |
249 | #ifndef OPENSSL_NO_PSK |
250 | if (src->psk_identity_hint) { | |
7644a9ae | 251 | dest->psk_identity_hint = OPENSSL_strdup(src->psk_identity_hint); |
98ece4ee MC |
252 | if (dest->psk_identity_hint == NULL) { |
253 | goto err; | |
254 | } | |
98ece4ee MC |
255 | } |
256 | if (src->psk_identity) { | |
7644a9ae | 257 | dest->psk_identity = OPENSSL_strdup(src->psk_identity); |
98ece4ee MC |
258 | if (dest->psk_identity == NULL) { |
259 | goto err; | |
260 | } | |
98ece4ee MC |
261 | } |
262 | #endif | |
263 | ||
98ece4ee MC |
264 | if(src->ciphers != NULL) { |
265 | dest->ciphers = sk_SSL_CIPHER_dup(src->ciphers); | |
266 | if (dest->ciphers == NULL) | |
267 | goto err; | |
98ece4ee MC |
268 | } |
269 | ||
270 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, | |
271 | &dest->ex_data, &src->ex_data)) { | |
272 | goto err; | |
273 | } | |
274 | ||
98ece4ee | 275 | if (src->tlsext_hostname) { |
7644a9ae | 276 | dest->tlsext_hostname = OPENSSL_strdup(src->tlsext_hostname); |
98ece4ee MC |
277 | if (dest->tlsext_hostname == NULL) { |
278 | goto err; | |
279 | } | |
98ece4ee | 280 | } |
708cf593 | 281 | #ifndef OPENSSL_NO_EC |
98ece4ee MC |
282 | if (src->tlsext_ecpointformatlist) { |
283 | dest->tlsext_ecpointformatlist = | |
7644a9ae | 284 | OPENSSL_memdup(src->tlsext_ecpointformatlist, |
98ece4ee MC |
285 | src->tlsext_ecpointformatlist_length); |
286 | if (dest->tlsext_ecpointformatlist == NULL) | |
287 | goto err; | |
98ece4ee MC |
288 | } |
289 | if (src->tlsext_ellipticcurvelist) { | |
290 | dest->tlsext_ellipticcurvelist = | |
7644a9ae | 291 | OPENSSL_memdup(src->tlsext_ellipticcurvelist, |
98ece4ee MC |
292 | src->tlsext_ellipticcurvelist_length); |
293 | if (dest->tlsext_ellipticcurvelist == NULL) | |
294 | goto err; | |
98ece4ee | 295 | } |
98ece4ee MC |
296 | #endif |
297 | ||
298 | if (ticket != 0) { | |
7644a9ae | 299 | dest->tlsext_tick = OPENSSL_memdup(src->tlsext_tick, src->tlsext_ticklen); |
708cf593 | 300 | if(dest->tlsext_tick == NULL) |
98ece4ee | 301 | goto err; |
708cf593 MC |
302 | } else { |
303 | dest->tlsext_tick_lifetime_hint = 0; | |
304 | dest->tlsext_ticklen = 0; | |
98ece4ee MC |
305 | } |
306 | ||
307 | #ifndef OPENSSL_NO_SRP | |
98ece4ee | 308 | if (src->srp_username) { |
7644a9ae | 309 | dest->srp_username = OPENSSL_strdup(src->srp_username); |
98ece4ee MC |
310 | if (dest->srp_username == NULL) { |
311 | goto err; | |
312 | } | |
98ece4ee MC |
313 | } |
314 | #endif | |
315 | ||
316 | return dest; | |
317 | err: | |
318 | SSLerr(SSL_F_SSL_SESSION_DUP, ERR_R_MALLOC_FAILURE); | |
319 | SSL_SESSION_free(dest); | |
320 | return NULL; | |
321 | } | |
322 | ||
0f113f3e MC |
323 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, |
324 | unsigned int *len) | |
325 | { | |
326 | if (len) | |
327 | *len = s->session_id_length; | |
328 | return s->session_id; | |
329 | } | |
4879ec7b | 330 | |
f9b0b452 | 331 | unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s) |
0f113f3e MC |
332 | { |
333 | return s->compress_meth; | |
334 | } | |
335 | ||
336 | /* | |
337 | * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling | |
338 | * the ID with random junk repeatedly until we have no conflict is going to | |
339 | * complete in one iteration pretty much "most" of the time (btw: | |
340 | * understatement). So, if it takes us 10 iterations and we still can't avoid | |
341 | * a conflict - well that's a reasonable point to call it quits. Either the | |
342 | * RAND code is broken or someone is trying to open roughly very close to | |
343 | * 2^256 SSL sessions to our server. How you might store that many sessions | |
344 | * is perhaps a more interesting question ... | |
345 | */ | |
dc644fe2 GT |
346 | |
347 | #define MAX_SESS_ID_ATTEMPTS 10 | |
348 | static int def_generate_session_id(const SSL *ssl, unsigned char *id, | |
0f113f3e | 349 | unsigned int *id_len) |
dc644fe2 | 350 | { |
0f113f3e MC |
351 | unsigned int retry = 0; |
352 | do | |
266483d2 | 353 | if (RAND_bytes(id, *id_len) <= 0) |
0f113f3e MC |
354 | return 0; |
355 | while (SSL_has_matching_session_id(ssl, id, *id_len) && | |
356 | (++retry < MAX_SESS_ID_ATTEMPTS)) ; | |
357 | if (retry < MAX_SESS_ID_ATTEMPTS) | |
358 | return 1; | |
359 | /* else - woops a session_id match */ | |
360 | /* | |
361 | * XXX We should also check the external cache -- but the probability of | |
362 | * a collision is negligible, and we could not prevent the concurrent | |
363 | * creation of sessions with identical IDs since we currently don't have | |
364 | * means to atomically check whether a session ID already exists and make | |
365 | * a reservation for it if it does not (this problem applies to the | |
366 | * internal cache as well). | |
367 | */ | |
368 | return 0; | |
dc644fe2 GT |
369 | } |
370 | ||
6b691a5c | 371 | int ssl_get_new_session(SSL *s, int session) |
0f113f3e MC |
372 | { |
373 | /* This gets used by clients and servers. */ | |
374 | ||
375 | unsigned int tmp; | |
376 | SSL_SESSION *ss = NULL; | |
377 | GEN_SESSION_CB cb = def_generate_session_id; | |
378 | ||
379 | if ((ss = SSL_SESSION_new()) == NULL) | |
380 | return (0); | |
381 | ||
382 | /* If the context has a default timeout, use it */ | |
383 | if (s->session_ctx->session_timeout == 0) | |
384 | ss->timeout = SSL_get_default_timeout(s); | |
385 | else | |
386 | ss->timeout = s->session_ctx->session_timeout; | |
387 | ||
62adbcee RS |
388 | SSL_SESSION_free(s->session); |
389 | s->session = NULL; | |
0f113f3e MC |
390 | |
391 | if (session) { | |
392 | if (s->version == SSL3_VERSION) { | |
393 | ss->ssl_version = SSL3_VERSION; | |
394 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
395 | } else if (s->version == TLS1_VERSION) { | |
396 | ss->ssl_version = TLS1_VERSION; | |
397 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
398 | } else if (s->version == TLS1_1_VERSION) { | |
399 | ss->ssl_version = TLS1_1_VERSION; | |
400 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
401 | } else if (s->version == TLS1_2_VERSION) { | |
402 | ss->ssl_version = TLS1_2_VERSION; | |
403 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
404 | } else if (s->version == DTLS1_BAD_VER) { | |
405 | ss->ssl_version = DTLS1_BAD_VER; | |
406 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
407 | } else if (s->version == DTLS1_VERSION) { | |
408 | ss->ssl_version = DTLS1_VERSION; | |
409 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
410 | } else if (s->version == DTLS1_2_VERSION) { | |
411 | ss->ssl_version = DTLS1_2_VERSION; | |
412 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
413 | } else { | |
414 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, SSL_R_UNSUPPORTED_SSL_VERSION); | |
415 | SSL_SESSION_free(ss); | |
416 | return (0); | |
417 | } | |
e481f9b9 | 418 | |
35a1cc90 MC |
419 | /*- |
420 | * If RFC5077 ticket, use empty session ID (as server). | |
421 | * Note that: | |
422 | * (a) ssl_get_prev_session() does lookahead into the | |
423 | * ClientHello extensions to find the session ticket. | |
424 | * When ssl_get_prev_session() fails, s3_srvr.c calls | |
425 | * ssl_get_new_session() in ssl3_get_client_hello(). | |
426 | * At that point, it has not yet parsed the extensions, | |
427 | * however, because of the lookahead, it already knows | |
428 | * whether a ticket is expected or not. | |
429 | * | |
430 | * (b) s3_clnt.c calls ssl_get_new_session() before parsing | |
431 | * ServerHello extensions, and before recording the session | |
432 | * ID received from the server, so this block is a noop. | |
433 | */ | |
0f113f3e MC |
434 | if (s->tlsext_ticket_expected) { |
435 | ss->session_id_length = 0; | |
436 | goto sess_id_done; | |
437 | } | |
e481f9b9 | 438 | |
0f113f3e MC |
439 | /* Choose which callback will set the session ID */ |
440 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); | |
441 | if (s->generate_session_id) | |
442 | cb = s->generate_session_id; | |
443 | else if (s->session_ctx->generate_session_id) | |
444 | cb = s->session_ctx->generate_session_id; | |
445 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); | |
446 | /* Choose a session ID */ | |
447 | tmp = ss->session_id_length; | |
448 | if (!cb(s, ss->session_id, &tmp)) { | |
449 | /* The callback failed */ | |
450 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, | |
451 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); | |
452 | SSL_SESSION_free(ss); | |
453 | return (0); | |
454 | } | |
455 | /* | |
456 | * Don't allow the callback to set the session length to zero. nor | |
457 | * set it higher than it was. | |
458 | */ | |
cc99bfa7 | 459 | if (tmp == 0 || tmp > ss->session_id_length) { |
0f113f3e MC |
460 | /* The callback set an illegal length */ |
461 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, | |
462 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); | |
463 | SSL_SESSION_free(ss); | |
464 | return (0); | |
465 | } | |
466 | ss->session_id_length = tmp; | |
467 | /* Finally, check for a conflict */ | |
468 | if (SSL_has_matching_session_id(s, ss->session_id, | |
469 | ss->session_id_length)) { | |
470 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, SSL_R_SSL_SESSION_ID_CONFLICT); | |
471 | SSL_SESSION_free(ss); | |
472 | return (0); | |
473 | } | |
e481f9b9 | 474 | |
0f113f3e MC |
475 | sess_id_done: |
476 | if (s->tlsext_hostname) { | |
7644a9ae | 477 | ss->tlsext_hostname = OPENSSL_strdup(s->tlsext_hostname); |
0f113f3e MC |
478 | if (ss->tlsext_hostname == NULL) { |
479 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); | |
480 | SSL_SESSION_free(ss); | |
481 | return 0; | |
482 | } | |
483 | } | |
0f113f3e MC |
484 | } else { |
485 | ss->session_id_length = 0; | |
486 | } | |
487 | ||
488 | if (s->sid_ctx_length > sizeof ss->sid_ctx) { | |
489 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); | |
490 | SSL_SESSION_free(ss); | |
491 | return 0; | |
492 | } | |
493 | memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length); | |
494 | ss->sid_ctx_length = s->sid_ctx_length; | |
495 | s->session = ss; | |
496 | ss->ssl_version = s->version; | |
497 | ss->verify_result = X509_V_OK; | |
498 | ||
e7f0d921 DSH |
499 | /* If client supports extended master secret set it in session */ |
500 | if (s->s3->flags & TLS1_FLAGS_RECEIVED_EXTMS) | |
501 | ss->flags |= SSL_SESS_FLAG_EXTMS; | |
502 | ||
0f113f3e MC |
503 | return (1); |
504 | } | |
d02b48c6 | 505 | |
3a83462d MC |
506 | /*- |
507 | * ssl_get_prev attempts to find an SSL_SESSION to be used to resume this | |
c519e89f BM |
508 | * connection. It is only called by servers. |
509 | * | |
b3e2272c EK |
510 | * ext: ClientHello extensions (including length prefix) |
511 | * session_id: ClientHello session ID. | |
c519e89f BM |
512 | * |
513 | * Returns: | |
514 | * -1: error | |
515 | * 0: a session may have been found. | |
516 | * | |
517 | * Side effects: | |
518 | * - If a session is found then s->session is pointed at it (after freeing an | |
519 | * existing session if need be) and s->verify_result is set from the session. | |
520 | * - Both for new and resumed sessions, s->tlsext_ticket_expected is set to 1 | |
521 | * if the server should issue a new session ticket (to 0 otherwise). | |
522 | */ | |
b3e2272c | 523 | int ssl_get_prev_session(SSL *s, const PACKET *ext, const PACKET *session_id) |
0f113f3e MC |
524 | { |
525 | /* This is used only by servers. */ | |
b56bce4f | 526 | |
0f113f3e MC |
527 | SSL_SESSION *ret = NULL; |
528 | int fatal = 0; | |
529 | int try_session_cache = 1; | |
0f113f3e | 530 | int r; |
d02b48c6 | 531 | |
293b5ca4 | 532 | if (PACKET_remaining(session_id) == 0) |
0f113f3e | 533 | try_session_cache = 0; |
c519e89f | 534 | |
e7f0d921 DSH |
535 | /* sets s->tlsext_ticket_expected and extended master secret flag */ |
536 | r = tls_check_serverhello_tlsext_early(s, ext, session_id, &ret); | |
0f113f3e MC |
537 | switch (r) { |
538 | case -1: /* Error during processing */ | |
539 | fatal = 1; | |
540 | goto err; | |
541 | case 0: /* No ticket found */ | |
542 | case 1: /* Zero length ticket found */ | |
543 | break; /* Ok to carry on processing session id. */ | |
544 | case 2: /* Ticket found but not decrypted. */ | |
545 | case 3: /* Ticket decrypted, *ret has been set. */ | |
546 | try_session_cache = 0; | |
547 | break; | |
548 | default: | |
549 | abort(); | |
550 | } | |
c519e89f | 551 | |
0f113f3e MC |
552 | if (try_session_cache && |
553 | ret == NULL && | |
739a5eee | 554 | !(s->session_ctx->session_cache_mode & |
0f113f3e MC |
555 | SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) { |
556 | SSL_SESSION data; | |
67202973 | 557 | size_t local_len; |
0f113f3e | 558 | data.ssl_version = s->version; |
67202973 EK |
559 | if (!PACKET_copy_all(session_id, data.session_id, |
560 | sizeof(data.session_id), | |
561 | &local_len)) { | |
562 | goto err; | |
563 | } | |
564 | data.session_id_length = local_len; | |
0f113f3e MC |
565 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); |
566 | ret = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data); | |
567 | if (ret != NULL) { | |
568 | /* don't allow other threads to steal it: */ | |
569 | CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_SSL_SESSION); | |
570 | } | |
571 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); | |
572 | if (ret == NULL) | |
573 | s->session_ctx->stats.sess_miss++; | |
574 | } | |
575 | ||
576 | if (try_session_cache && | |
577 | ret == NULL && s->session_ctx->get_session_cb != NULL) { | |
578 | int copy = 1; | |
b6981744 EK |
579 | ret = s->session_ctx->get_session_cb(s, PACKET_data(session_id), |
580 | PACKET_remaining(session_id), | |
581 | ©); | |
0f113f3e | 582 | |
bf0fc412 | 583 | if (ret != NULL) { |
0f113f3e MC |
584 | s->session_ctx->stats.sess_cb_hit++; |
585 | ||
586 | /* | |
587 | * Increment reference count now if the session callback asks us | |
588 | * to do so (note that if the session structures returned by the | |
589 | * callback are shared between threads, it must handle the | |
590 | * reference count itself [i.e. copy == 0], or things won't be | |
591 | * thread-safe). | |
592 | */ | |
593 | if (copy) | |
594 | CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_SSL_SESSION); | |
595 | ||
596 | /* | |
597 | * Add the externally cached session to the internal cache as | |
598 | * well if and only if we are supposed to. | |
599 | */ | |
600 | if (! | |
739a5eee | 601 | (s->session_ctx->session_cache_mode & |
69f68237 | 602 | SSL_SESS_CACHE_NO_INTERNAL_STORE)) { |
0f113f3e MC |
603 | /* |
604 | * The following should not return 1, otherwise, things are | |
605 | * very strange | |
606 | */ | |
61986d32 | 607 | if (SSL_CTX_add_session(s->session_ctx, ret)) |
69f68237 MC |
608 | goto err; |
609 | } | |
0f113f3e MC |
610 | } |
611 | } | |
612 | ||
613 | if (ret == NULL) | |
614 | goto err; | |
615 | ||
616 | /* Now ret is non-NULL and we own one of its reference counts. */ | |
617 | ||
618 | if (ret->sid_ctx_length != s->sid_ctx_length | |
619 | || memcmp(ret->sid_ctx, s->sid_ctx, ret->sid_ctx_length)) { | |
620 | /* | |
621 | * We have the session requested by the client, but we don't want to | |
622 | * use it in this context. | |
623 | */ | |
624 | goto err; /* treat like cache miss */ | |
625 | } | |
626 | ||
627 | if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) { | |
628 | /* | |
629 | * We can't be sure if this session is being used out of context, | |
630 | * which is especially important for SSL_VERIFY_PEER. The application | |
631 | * should have used SSL[_CTX]_set_session_id_context. For this error | |
632 | * case, we generate an error instead of treating the event like a | |
633 | * cache miss (otherwise it would be easy for applications to | |
634 | * effectively disable the session cache by accident without anyone | |
635 | * noticing). | |
636 | */ | |
637 | ||
638 | SSLerr(SSL_F_SSL_GET_PREV_SESSION, | |
639 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); | |
640 | fatal = 1; | |
641 | goto err; | |
642 | } | |
643 | ||
644 | if (ret->cipher == NULL) { | |
645 | unsigned char buf[5], *p; | |
646 | unsigned long l; | |
647 | ||
648 | p = buf; | |
649 | l = ret->cipher_id; | |
650 | l2n(l, p); | |
651 | if ((ret->ssl_version >> 8) >= SSL3_VERSION_MAJOR) | |
652 | ret->cipher = ssl_get_cipher_by_char(s, &(buf[2])); | |
653 | else | |
654 | ret->cipher = ssl_get_cipher_by_char(s, &(buf[1])); | |
655 | if (ret->cipher == NULL) | |
656 | goto err; | |
657 | } | |
658 | ||
659 | if (ret->timeout < (long)(time(NULL) - ret->time)) { /* timeout */ | |
660 | s->session_ctx->stats.sess_timeout++; | |
661 | if (try_session_cache) { | |
662 | /* session was from the cache, so remove it */ | |
663 | SSL_CTX_remove_session(s->session_ctx, ret); | |
664 | } | |
665 | goto err; | |
666 | } | |
667 | ||
e7f0d921 DSH |
668 | /* Check extended master secret extension consistency */ |
669 | if (ret->flags & SSL_SESS_FLAG_EXTMS) { | |
670 | /* If old session includes extms, but new does not: abort handshake */ | |
671 | if (!(s->s3->flags & TLS1_FLAGS_RECEIVED_EXTMS)) { | |
672 | SSLerr(SSL_F_SSL_GET_PREV_SESSION, SSL_R_INCONSISTENT_EXTMS); | |
673 | ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE); | |
674 | fatal = 1; | |
675 | goto err; | |
676 | } | |
677 | } else if (s->s3->flags & TLS1_FLAGS_RECEIVED_EXTMS) { | |
678 | /* If new session includes extms, but old does not: do not resume */ | |
679 | goto err; | |
680 | } | |
681 | ||
0f113f3e MC |
682 | s->session_ctx->stats.sess_hit++; |
683 | ||
62adbcee | 684 | SSL_SESSION_free(s->session); |
0f113f3e MC |
685 | s->session = ret; |
686 | s->verify_result = s->session->verify_result; | |
687 | return 1; | |
8876bc05 BM |
688 | |
689 | err: | |
0f113f3e MC |
690 | if (ret != NULL) { |
691 | SSL_SESSION_free(ret); | |
e481f9b9 | 692 | |
0f113f3e MC |
693 | if (!try_session_cache) { |
694 | /* | |
695 | * The session was from a ticket, so we should issue a ticket for | |
696 | * the new session | |
697 | */ | |
698 | s->tlsext_ticket_expected = 1; | |
699 | } | |
0f113f3e MC |
700 | } |
701 | if (fatal) | |
702 | return -1; | |
703 | else | |
704 | return 0; | |
705 | } | |
d02b48c6 | 706 | |
6b691a5c | 707 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
0f113f3e MC |
708 | { |
709 | int ret = 0; | |
710 | SSL_SESSION *s; | |
711 | ||
712 | /* | |
713 | * add just 1 reference count for the SSL_CTX's session cache even though | |
714 | * it has two ways of access: each session is in a doubly linked list and | |
715 | * an lhash | |
716 | */ | |
717 | CRYPTO_add(&c->references, 1, CRYPTO_LOCK_SSL_SESSION); | |
718 | /* | |
719 | * if session c is in already in cache, we take back the increment later | |
720 | */ | |
721 | ||
722 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
723 | s = lh_SSL_SESSION_insert(ctx->sessions, c); | |
724 | ||
725 | /* | |
726 | * s != NULL iff we already had a session with the given PID. In this | |
727 | * case, s == c should hold (then we did not really modify | |
728 | * ctx->sessions), or we're in trouble. | |
729 | */ | |
730 | if (s != NULL && s != c) { | |
731 | /* We *are* in trouble ... */ | |
732 | SSL_SESSION_list_remove(ctx, s); | |
733 | SSL_SESSION_free(s); | |
734 | /* | |
735 | * ... so pretend the other session did not exist in cache (we cannot | |
736 | * handle two SSL_SESSION structures with identical session ID in the | |
737 | * same cache, which could happen e.g. when two threads concurrently | |
738 | * obtain the same session from an external cache) | |
739 | */ | |
740 | s = NULL; | |
741 | } | |
742 | ||
743 | /* Put at the head of the queue unless it is already in the cache */ | |
744 | if (s == NULL) | |
745 | SSL_SESSION_list_add(ctx, c); | |
746 | ||
747 | if (s != NULL) { | |
748 | /* | |
749 | * existing cache entry -- decrement previously incremented reference | |
750 | * count because it already takes into account the cache | |
751 | */ | |
752 | ||
753 | SSL_SESSION_free(s); /* s == c */ | |
754 | ret = 0; | |
755 | } else { | |
756 | /* | |
757 | * new cache entry -- remove old ones if cache has become too large | |
758 | */ | |
759 | ||
760 | ret = 1; | |
761 | ||
762 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) { | |
763 | while (SSL_CTX_sess_number(ctx) > | |
764 | SSL_CTX_sess_get_cache_size(ctx)) { | |
765 | if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) | |
766 | break; | |
767 | else | |
768 | ctx->stats.sess_cache_full++; | |
769 | } | |
770 | } | |
771 | } | |
772 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
773 | return (ret); | |
774 | } | |
d02b48c6 | 775 | |
6b691a5c | 776 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
801294f8 | 777 | { |
0f113f3e | 778 | return remove_session_lock(ctx, c, 1); |
801294f8 DSH |
779 | } |
780 | ||
0fda2e37 | 781 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) |
0f113f3e MC |
782 | { |
783 | SSL_SESSION *r; | |
784 | int ret = 0; | |
785 | ||
786 | if ((c != NULL) && (c->session_id_length != 0)) { | |
787 | if (lck) | |
788 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
789 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) == c) { | |
790 | ret = 1; | |
791 | r = lh_SSL_SESSION_delete(ctx->sessions, c); | |
792 | SSL_SESSION_list_remove(ctx, c); | |
793 | } | |
794 | ||
795 | if (lck) | |
796 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
797 | ||
798 | if (ret) { | |
799 | r->not_resumable = 1; | |
800 | if (ctx->remove_session_cb != NULL) | |
801 | ctx->remove_session_cb(ctx, r); | |
802 | SSL_SESSION_free(r); | |
803 | } | |
804 | } else | |
805 | ret = 0; | |
806 | return (ret); | |
807 | } | |
d02b48c6 | 808 | |
6b691a5c | 809 | void SSL_SESSION_free(SSL_SESSION *ss) |
0f113f3e MC |
810 | { |
811 | int i; | |
d02b48c6 | 812 | |
0f113f3e MC |
813 | if (ss == NULL) |
814 | return; | |
e03ddfae | 815 | |
0f113f3e | 816 | i = CRYPTO_add(&ss->references, -1, CRYPTO_LOCK_SSL_SESSION); |
58964a49 | 817 | #ifdef REF_PRINT |
0f113f3e | 818 | REF_PRINT("SSL_SESSION", ss); |
58964a49 | 819 | #endif |
0f113f3e MC |
820 | if (i > 0) |
821 | return; | |
d02b48c6 | 822 | #ifdef REF_CHECK |
0f113f3e MC |
823 | if (i < 0) { |
824 | fprintf(stderr, "SSL_SESSION_free, bad reference count\n"); | |
825 | abort(); /* ok */ | |
826 | } | |
d02b48c6 RE |
827 | #endif |
828 | ||
0f113f3e | 829 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
58964a49 | 830 | |
0f113f3e MC |
831 | OPENSSL_cleanse(ss->master_key, sizeof ss->master_key); |
832 | OPENSSL_cleanse(ss->session_id, sizeof ss->session_id); | |
222561fe | 833 | X509_free(ss->peer); |
c34b0f99 | 834 | sk_X509_pop_free(ss->peer_chain, X509_free); |
25aaa98a | 835 | sk_SSL_CIPHER_free(ss->ciphers); |
25aaa98a RS |
836 | OPENSSL_free(ss->tlsext_hostname); |
837 | OPENSSL_free(ss->tlsext_tick); | |
e481f9b9 | 838 | #ifndef OPENSSL_NO_EC |
0f113f3e | 839 | ss->tlsext_ecpointformatlist_length = 0; |
25aaa98a | 840 | OPENSSL_free(ss->tlsext_ecpointformatlist); |
0f113f3e | 841 | ss->tlsext_ellipticcurvelist_length = 0; |
25aaa98a | 842 | OPENSSL_free(ss->tlsext_ellipticcurvelist); |
e481f9b9 | 843 | #endif /* OPENSSL_NO_EC */ |
ddac1974 | 844 | #ifndef OPENSSL_NO_PSK |
25aaa98a RS |
845 | OPENSSL_free(ss->psk_identity_hint); |
846 | OPENSSL_free(ss->psk_identity); | |
edc032b5 BL |
847 | #endif |
848 | #ifndef OPENSSL_NO_SRP | |
25aaa98a | 849 | OPENSSL_free(ss->srp_username); |
ed3883d2 | 850 | #endif |
4b45c6e5 | 851 | OPENSSL_clear_free(ss, sizeof(*ss)); |
0f113f3e | 852 | } |
d02b48c6 | 853 | |
6b691a5c | 854 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
0f113f3e MC |
855 | { |
856 | int ret = 0; | |
857 | const SSL_METHOD *meth; | |
858 | ||
859 | if (session != NULL) { | |
860 | meth = s->ctx->method->get_ssl_method(session->ssl_version); | |
861 | if (meth == NULL) | |
862 | meth = s->method->get_ssl_method(session->ssl_version); | |
863 | if (meth == NULL) { | |
864 | SSLerr(SSL_F_SSL_SET_SESSION, SSL_R_UNABLE_TO_FIND_SSL_METHOD); | |
865 | return (0); | |
866 | } | |
867 | ||
868 | if (meth != s->method) { | |
869 | if (!SSL_set_ssl_method(s, meth)) | |
870 | return (0); | |
871 | } | |
0f113f3e MC |
872 | |
873 | /* CRYPTO_w_lock(CRYPTO_LOCK_SSL); */ | |
874 | CRYPTO_add(&session->references, 1, CRYPTO_LOCK_SSL_SESSION); | |
e0e920b1 | 875 | SSL_SESSION_free(s->session); |
0f113f3e MC |
876 | s->session = session; |
877 | s->verify_result = s->session->verify_result; | |
878 | /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL); */ | |
879 | ret = 1; | |
880 | } else { | |
e0e920b1 RS |
881 | SSL_SESSION_free(s->session); |
882 | s->session = NULL; | |
0f113f3e MC |
883 | meth = s->ctx->method; |
884 | if (meth != s->method) { | |
885 | if (!SSL_set_ssl_method(s, meth)) | |
886 | return (0); | |
887 | } | |
888 | ret = 1; | |
889 | } | |
890 | return (ret); | |
891 | } | |
d02b48c6 | 892 | |
6b691a5c | 893 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
0f113f3e MC |
894 | { |
895 | if (s == NULL) | |
896 | return (0); | |
897 | s->timeout = t; | |
898 | return (1); | |
899 | } | |
d02b48c6 | 900 | |
0821bcd4 | 901 | long SSL_SESSION_get_timeout(const SSL_SESSION *s) |
0f113f3e MC |
902 | { |
903 | if (s == NULL) | |
904 | return (0); | |
905 | return (s->timeout); | |
906 | } | |
d02b48c6 | 907 | |
0821bcd4 | 908 | long SSL_SESSION_get_time(const SSL_SESSION *s) |
0f113f3e MC |
909 | { |
910 | if (s == NULL) | |
911 | return (0); | |
912 | return (s->time); | |
913 | } | |
d02b48c6 | 914 | |
6b691a5c | 915 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
0f113f3e MC |
916 | { |
917 | if (s == NULL) | |
918 | return (0); | |
919 | s->time = t; | |
920 | return (t); | |
921 | } | |
d02b48c6 | 922 | |
f2baac27 MC |
923 | int SSL_SESSION_has_ticket(const SSL_SESSION *s) |
924 | { | |
925 | return (s->tlsext_ticklen > 0) ? 1 : 0; | |
926 | } | |
927 | ||
928 | unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s) | |
929 | { | |
930 | return s->tlsext_tick_lifetime_hint; | |
931 | } | |
932 | ||
b7c9187b MC |
933 | void SSL_SESSION_get0_ticket(const SSL_SESSION *s, unsigned char **tick, |
934 | size_t *len) | |
935 | { | |
936 | *len = s->tlsext_ticklen; | |
61986d32 | 937 | if (tick != NULL) |
b7c9187b MC |
938 | *tick = s->tlsext_tick; |
939 | } | |
940 | ||
08557cf2 | 941 | X509 *SSL_SESSION_get0_peer(SSL_SESSION *s) |
0f113f3e MC |
942 | { |
943 | return s->peer; | |
944 | } | |
945 | ||
946 | int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx, | |
947 | unsigned int sid_ctx_len) | |
948 | { | |
949 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
950 | SSLerr(SSL_F_SSL_SESSION_SET1_ID_CONTEXT, | |
951 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
952 | return 0; | |
953 | } | |
954 | s->sid_ctx_length = sid_ctx_len; | |
955 | memcpy(s->sid_ctx, sid_ctx, sid_ctx_len); | |
956 | ||
957 | return 1; | |
958 | } | |
08557cf2 | 959 | |
6b691a5c | 960 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
0f113f3e MC |
961 | { |
962 | long l; | |
963 | if (s == NULL) | |
964 | return (0); | |
965 | l = s->session_timeout; | |
966 | s->session_timeout = t; | |
967 | return (l); | |
968 | } | |
413c4f45 | 969 | |
0821bcd4 | 970 | long SSL_CTX_get_timeout(const SSL_CTX *s) |
0f113f3e MC |
971 | { |
972 | if (s == NULL) | |
973 | return (0); | |
974 | return (s->session_timeout); | |
975 | } | |
413c4f45 | 976 | |
0f113f3e MC |
977 | int SSL_set_session_secret_cb(SSL *s, |
978 | int (*tls_session_secret_cb) (SSL *s, | |
979 | void *secret, | |
980 | int *secret_len, | |
981 | STACK_OF(SSL_CIPHER) | |
982 | *peer_ciphers, | |
4a640fb6 | 983 | const SSL_CIPHER |
0f113f3e MC |
984 | **cipher, |
985 | void *arg), | |
986 | void *arg) | |
987 | { | |
988 | if (s == NULL) | |
989 | return (0); | |
990 | s->tls_session_secret_cb = tls_session_secret_cb; | |
991 | s->tls_session_secret_cb_arg = arg; | |
992 | return (1); | |
993 | } | |
12bf56c0 DSH |
994 | |
995 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, | |
0f113f3e MC |
996 | void *arg) |
997 | { | |
998 | if (s == NULL) | |
999 | return (0); | |
1000 | s->tls_session_ticket_ext_cb = cb; | |
1001 | s->tls_session_ticket_ext_cb_arg = arg; | |
1002 | return (1); | |
1003 | } | |
12bf56c0 DSH |
1004 | |
1005 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) | |
0f113f3e MC |
1006 | { |
1007 | if (s->version >= TLS1_VERSION) { | |
b548a1f1 RS |
1008 | OPENSSL_free(s->tlsext_session_ticket); |
1009 | s->tlsext_session_ticket = NULL; | |
0f113f3e MC |
1010 | s->tlsext_session_ticket = |
1011 | OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); | |
a71edf3b | 1012 | if (s->tlsext_session_ticket == NULL) { |
0f113f3e MC |
1013 | SSLerr(SSL_F_SSL_SET_SESSION_TICKET_EXT, ERR_R_MALLOC_FAILURE); |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | if (ext_data) { | |
1018 | s->tlsext_session_ticket->length = ext_len; | |
1019 | s->tlsext_session_ticket->data = s->tlsext_session_ticket + 1; | |
1020 | memcpy(s->tlsext_session_ticket->data, ext_data, ext_len); | |
1021 | } else { | |
1022 | s->tlsext_session_ticket->length = 0; | |
1023 | s->tlsext_session_ticket->data = NULL; | |
1024 | } | |
1025 | ||
1026 | return 1; | |
1027 | } | |
1028 | ||
1029 | return 0; | |
1030 | } | |
0f113f3e MC |
1031 | |
1032 | typedef struct timeout_param_st { | |
1033 | SSL_CTX *ctx; | |
1034 | long time; | |
1035 | LHASH_OF(SSL_SESSION) *cache; | |
1036 | } TIMEOUT_PARAM; | |
d02b48c6 | 1037 | |
2a056de8 | 1038 | static void timeout_cb(SSL_SESSION *s, TIMEOUT_PARAM *p) |
0f113f3e MC |
1039 | { |
1040 | if ((p->time == 0) || (p->time > (s->time + s->timeout))) { /* timeout */ | |
1041 | /* | |
1042 | * The reason we don't call SSL_CTX_remove_session() is to save on | |
1043 | * locking overhead | |
1044 | */ | |
1045 | (void)lh_SSL_SESSION_delete(p->cache, s); | |
1046 | SSL_SESSION_list_remove(p->ctx, s); | |
1047 | s->not_resumable = 1; | |
1048 | if (p->ctx->remove_session_cb != NULL) | |
1049 | p->ctx->remove_session_cb(p->ctx, s); | |
1050 | SSL_SESSION_free(s); | |
1051 | } | |
1052 | } | |
d02b48c6 | 1053 | |
2a056de8 | 1054 | IMPLEMENT_LHASH_DOALL_ARG(SSL_SESSION, TIMEOUT_PARAM); |
3c914840 | 1055 | |
6b691a5c | 1056 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
0f113f3e MC |
1057 | { |
1058 | unsigned long i; | |
1059 | TIMEOUT_PARAM tp; | |
1060 | ||
1061 | tp.ctx = s; | |
1062 | tp.cache = s->sessions; | |
1063 | if (tp.cache == NULL) | |
1064 | return; | |
1065 | tp.time = t; | |
1066 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
1067 | i = CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load; | |
1068 | CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load = 0; | |
2a056de8 | 1069 | lh_SSL_SESSION_doall_TIMEOUT_PARAM(tp.cache, timeout_cb, &tp); |
0f113f3e MC |
1070 | CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load = i; |
1071 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
1072 | } | |
d02b48c6 | 1073 | |
6b691a5c | 1074 | int ssl_clear_bad_session(SSL *s) |
0f113f3e MC |
1075 | { |
1076 | if ((s->session != NULL) && | |
1077 | !(s->shutdown & SSL_SENT_SHUTDOWN) && | |
1078 | !(SSL_in_init(s) || SSL_in_before(s))) { | |
1079 | SSL_CTX_remove_session(s->ctx, s->session); | |
1080 | return (1); | |
1081 | } else | |
1082 | return (0); | |
1083 | } | |
58964a49 RE |
1084 | |
1085 | /* locked by SSL_CTX in the calling function */ | |
6b691a5c | 1086 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1087 | { |
1088 | if ((s->next == NULL) || (s->prev == NULL)) | |
1089 | return; | |
1090 | ||
1091 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) { | |
1092 | /* last element in list */ | |
1093 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1094 | /* only one element in list */ | |
1095 | ctx->session_cache_head = NULL; | |
1096 | ctx->session_cache_tail = NULL; | |
1097 | } else { | |
1098 | ctx->session_cache_tail = s->prev; | |
1099 | s->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1100 | } | |
1101 | } else { | |
1102 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1103 | /* first element in list */ | |
1104 | ctx->session_cache_head = s->next; | |
1105 | s->next->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1106 | } else { | |
1107 | /* middle of list */ | |
1108 | s->next->prev = s->prev; | |
1109 | s->prev->next = s->next; | |
1110 | } | |
1111 | } | |
1112 | s->prev = s->next = NULL; | |
1113 | } | |
58964a49 | 1114 | |
6b691a5c | 1115 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1116 | { |
1117 | if ((s->next != NULL) && (s->prev != NULL)) | |
1118 | SSL_SESSION_list_remove(ctx, s); | |
1119 | ||
1120 | if (ctx->session_cache_head == NULL) { | |
1121 | ctx->session_cache_head = s; | |
1122 | ctx->session_cache_tail = s; | |
1123 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1124 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1125 | } else { | |
1126 | s->next = ctx->session_cache_head; | |
1127 | s->next->prev = s; | |
1128 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1129 | ctx->session_cache_head = s; | |
1130 | } | |
1131 | } | |
58964a49 | 1132 | |
7806f3dd | 1133 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
0f113f3e MC |
1134 | int (*cb) (struct ssl_st *ssl, |
1135 | SSL_SESSION *sess)) | |
1136 | { | |
1137 | ctx->new_session_cb = cb; | |
1138 | } | |
7806f3dd | 1139 | |
0f113f3e MC |
1140 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (SSL *ssl, SSL_SESSION *sess) { |
1141 | return ctx->new_session_cb; | |
1142 | } | |
7806f3dd NL |
1143 | |
1144 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1145 | void (*cb) (SSL_CTX *ctx, SSL_SESSION *sess)) |
1146 | { | |
1147 | ctx->remove_session_cb = cb; | |
1148 | } | |
7806f3dd | 1149 | |
0f113f3e MC |
1150 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (SSL_CTX *ctx, |
1151 | SSL_SESSION *sess) { | |
1152 | return ctx->remove_session_cb; | |
1153 | } | |
7806f3dd NL |
1154 | |
1155 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, | |
0f113f3e | 1156 | SSL_SESSION *(*cb) (struct ssl_st *ssl, |
b6981744 EK |
1157 | const unsigned char *data, |
1158 | int len, int *copy)) | |
0f113f3e MC |
1159 | { |
1160 | ctx->get_session_cb = cb; | |
1161 | } | |
1162 | ||
1163 | SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (SSL *ssl, | |
b6981744 | 1164 | const unsigned char *data, |
0f113f3e MC |
1165 | int len, int *copy) { |
1166 | return ctx->get_session_cb; | |
1167 | } | |
1168 | ||
1169 | void SSL_CTX_set_info_callback(SSL_CTX *ctx, | |
1170 | void (*cb) (const SSL *ssl, int type, int val)) | |
1171 | { | |
1172 | ctx->info_callback = cb; | |
1173 | } | |
1174 | ||
1175 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type, | |
1176 | int val) { | |
1177 | return ctx->info_callback; | |
1178 | } | |
7806f3dd NL |
1179 | |
1180 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1181 | int (*cb) (SSL *ssl, X509 **x509, |
1182 | EVP_PKEY **pkey)) | |
1183 | { | |
1184 | ctx->client_cert_cb = cb; | |
1185 | } | |
7806f3dd | 1186 | |
0f113f3e MC |
1187 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509, |
1188 | EVP_PKEY **pkey) { | |
1189 | return ctx->client_cert_cb; | |
1190 | } | |
7806f3dd | 1191 | |
368888bc DSH |
1192 | #ifndef OPENSSL_NO_ENGINE |
1193 | int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e) | |
0f113f3e MC |
1194 | { |
1195 | if (!ENGINE_init(e)) { | |
1196 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB); | |
1197 | return 0; | |
1198 | } | |
1199 | if (!ENGINE_get_ssl_client_cert_function(e)) { | |
1200 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, | |
1201 | SSL_R_NO_CLIENT_CERT_METHOD); | |
1202 | ENGINE_finish(e); | |
1203 | return 0; | |
1204 | } | |
1205 | ctx->client_cert_engine = e; | |
1206 | return 1; | |
1207 | } | |
368888bc DSH |
1208 | #endif |
1209 | ||
7806f3dd | 1210 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, |
0f113f3e MC |
1211 | int (*cb) (SSL *ssl, |
1212 | unsigned char *cookie, | |
1213 | unsigned int *cookie_len)) | |
1214 | { | |
1215 | ctx->app_gen_cookie_cb = cb; | |
1216 | } | |
7806f3dd NL |
1217 | |
1218 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, | |
31011544 | 1219 | int (*cb) (SSL *ssl, const unsigned char *cookie, |
0f113f3e MC |
1220 | unsigned int cookie_len)) |
1221 | { | |
1222 | ctx->app_verify_cookie_cb = cb; | |
1223 | } | |
7806f3dd | 1224 | |
0f113f3e MC |
1225 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, |
1226 | SSL_SESSION) |