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d02b48c6 | 1 | /* ssl/ssl_sess.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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 | */ | |
f1fd4544 BM |
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 | */ | |
ddac1974 NL |
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 | */ | |
d02b48c6 RE |
137 | |
138 | #include <stdio.h> | |
ec577822 BM |
139 | #include <openssl/lhash.h> |
140 | #include <openssl/rand.h> | |
368888bc DSH |
141 | #ifndef OPENSSL_NO_ENGINE |
142 | #include <openssl/engine.h> | |
143 | #endif | |
d02b48c6 RE |
144 | #include "ssl_locl.h" |
145 | ||
58964a49 RE |
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); | |
801294f8 | 148 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); |
58964a49 | 149 | |
0821bcd4 | 150 | SSL_SESSION *SSL_get_session(const SSL *ssl) |
52732b38 | 151 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ |
1088e27c BM |
152 | { |
153 | return(ssl->session); | |
154 | } | |
52732b38 BM |
155 | |
156 | SSL_SESSION *SSL_get1_session(SSL *ssl) | |
157 | /* variant of SSL_get_session: caller really gets something */ | |
58964a49 | 158 | { |
b7cfcfb7 MC |
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. */ | |
9ea72d37 | 163 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION); |
b7cfcfb7 MC |
164 | sess = ssl->session; |
165 | if(sess) | |
166 | sess->references++; | |
9ea72d37 | 167 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION); |
b7cfcfb7 | 168 | return(sess); |
58964a49 RE |
169 | } |
170 | ||
dd9d233e DSH |
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) | |
b1c4fe36 | 173 | { |
79aa04ef GT |
174 | return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp, |
175 | new_func, dup_func, free_func); | |
b1c4fe36 | 176 | } |
58964a49 | 177 | |
6b691a5c | 178 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
58964a49 RE |
179 | { |
180 | return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); | |
181 | } | |
182 | ||
0821bcd4 | 183 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) |
58964a49 RE |
184 | { |
185 | return(CRYPTO_get_ex_data(&s->ex_data,idx)); | |
186 | } | |
187 | ||
6b691a5c | 188 | SSL_SESSION *SSL_SESSION_new(void) |
d02b48c6 RE |
189 | { |
190 | SSL_SESSION *ss; | |
191 | ||
26a3a48d | 192 | ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION)); |
d02b48c6 RE |
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 | ||
b1fe6ca1 | 200 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ |
d02b48c6 RE |
201 | ss->references=1; |
202 | ss->timeout=60*5+4; /* 5 minute timeout by default */ | |
7bbcb2f6 | 203 | ss->time=(unsigned long)time(NULL); |
58964a49 RE |
204 | ss->prev=NULL; |
205 | ss->next=NULL; | |
413c4f45 | 206 | ss->compress_meth=0; |
ed3883d2 BM |
207 | #ifndef OPENSSL_NO_TLSEXT |
208 | ss->tlsext_hostname = NULL; | |
36ca4ba6 BM |
209 | #ifndef OPENSSL_NO_EC |
210 | ss->tlsext_ecpointformatlist_length = 0; | |
211 | ss->tlsext_ecpointformatlist = NULL; | |
33273721 BM |
212 | ss->tlsext_ellipticcurvelist_length = 0; |
213 | ss->tlsext_ellipticcurvelist = NULL; | |
36ca4ba6 | 214 | #endif |
ed3883d2 | 215 | #endif |
79aa04ef | 216 | CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
ddac1974 NL |
217 | #ifndef OPENSSL_NO_PSK |
218 | ss->psk_identity_hint=NULL; | |
219 | ss->psk_identity=NULL; | |
a149b246 BL |
220 | #endif |
221 | #ifndef OPENSSL_NO_SRP | |
222 | ss->srp_username=NULL; | |
ddac1974 | 223 | #endif |
d02b48c6 RE |
224 | return(ss); |
225 | } | |
226 | ||
4879ec7b GT |
227 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) |
228 | { | |
229 | if(len) | |
230 | *len = s->session_id_length; | |
231 | return s->session_id; | |
232 | } | |
233 | ||
f5575cd1 DSH |
234 | unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s) |
235 | { | |
236 | return s->compress_meth; | |
237 | } | |
238 | ||
dc644fe2 GT |
239 | /* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1 |
240 | * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly | |
241 | * until we have no conflict is going to complete in one iteration pretty much | |
242 | * "most" of the time (btw: understatement). So, if it takes us 10 iterations | |
243 | * and we still can't avoid a conflict - well that's a reasonable point to call | |
244 | * it quits. Either the RAND code is broken or someone is trying to open roughly | |
245 | * very close to 2^128 (or 2^256) SSL sessions to our server. How you might | |
246 | * store that many sessions is perhaps a more interesting question ... */ | |
247 | ||
248 | #define MAX_SESS_ID_ATTEMPTS 10 | |
249 | static int def_generate_session_id(const SSL *ssl, unsigned char *id, | |
250 | unsigned int *id_len) | |
251 | { | |
252 | unsigned int retry = 0; | |
253 | do | |
7c7667b8 NL |
254 | if (RAND_pseudo_bytes(id, *id_len) <= 0) |
255 | return 0; | |
f85c9904 | 256 | while(SSL_has_matching_session_id(ssl, id, *id_len) && |
dc644fe2 GT |
257 | (++retry < MAX_SESS_ID_ATTEMPTS)); |
258 | if(retry < MAX_SESS_ID_ATTEMPTS) | |
259 | return 1; | |
260 | /* else - woops a session_id match */ | |
261 | /* XXX We should also check the external cache -- | |
262 | * but the probability of a collision is negligible, and | |
263 | * we could not prevent the concurrent creation of sessions | |
264 | * with identical IDs since we currently don't have means | |
265 | * to atomically check whether a session ID already exists | |
266 | * and make a reservation for it if it does not | |
267 | * (this problem applies to the internal cache as well). | |
268 | */ | |
269 | return 0; | |
270 | } | |
271 | ||
6b691a5c | 272 | int ssl_get_new_session(SSL *s, int session) |
d02b48c6 | 273 | { |
b56bce4f BM |
274 | /* This gets used by clients and servers. */ |
275 | ||
dc644fe2 | 276 | unsigned int tmp; |
d02b48c6 | 277 | SSL_SESSION *ss=NULL; |
dc644fe2 | 278 | GEN_SESSION_CB cb = def_generate_session_id; |
d02b48c6 RE |
279 | |
280 | if ((ss=SSL_SESSION_new()) == NULL) return(0); | |
281 | ||
282 | /* If the context has a default timeout, use it */ | |
1aeb3da8 | 283 | if (s->session_ctx->session_timeout == 0) |
d02b48c6 | 284 | ss->timeout=SSL_get_default_timeout(s); |
413c4f45 | 285 | else |
a13c20f6 | 286 | ss->timeout=s->session_ctx->session_timeout; |
d02b48c6 RE |
287 | |
288 | if (s->session != NULL) | |
289 | { | |
290 | SSL_SESSION_free(s->session); | |
291 | s->session=NULL; | |
292 | } | |
293 | ||
294 | if (session) | |
295 | { | |
6d02d8e4 | 296 | if (s->version == SSL2_VERSION) |
d02b48c6 | 297 | { |
58964a49 | 298 | ss->ssl_version=SSL2_VERSION; |
d02b48c6 RE |
299 | ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; |
300 | } | |
58964a49 | 301 | else if (s->version == SSL3_VERSION) |
d02b48c6 | 302 | { |
58964a49 RE |
303 | ss->ssl_version=SSL3_VERSION; |
304 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; | |
305 | } | |
306 | else if (s->version == TLS1_VERSION) | |
307 | { | |
308 | ss->ssl_version=TLS1_VERSION; | |
d02b48c6 RE |
309 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; |
310 | } | |
b4b15f68 DSH |
311 | else if (s->version == TLS1_1_VERSION) |
312 | { | |
313 | ss->ssl_version=TLS1_1_VERSION; | |
314 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; | |
9472baae DSH |
315 | } |
316 | else if (s->version == TLS1_2_VERSION) | |
317 | { | |
318 | ss->ssl_version=TLS1_2_VERSION; | |
319 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; | |
b4b15f68 | 320 | } |
b452f433 DSH |
321 | else if (s->version == DTLS1_BAD_VER) |
322 | { | |
323 | ss->ssl_version=DTLS1_BAD_VER; | |
324 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; | |
325 | } | |
36d16f8e BL |
326 | else if (s->version == DTLS1_VERSION) |
327 | { | |
328 | ss->ssl_version=DTLS1_VERSION; | |
329 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; | |
330 | } | |
acec5a62 DSH |
331 | else if (s->version == DTLS1_2_VERSION) |
332 | { | |
333 | ss->ssl_version=DTLS1_2_VERSION; | |
334 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; | |
335 | } | |
d02b48c6 RE |
336 | else |
337 | { | |
338 | SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION); | |
339 | SSL_SESSION_free(ss); | |
340 | return(0); | |
341 | } | |
6434abbf DSH |
342 | #ifndef OPENSSL_NO_TLSEXT |
343 | /* If RFC4507 ticket use empty session ID */ | |
344 | if (s->tlsext_ticket_expected) | |
345 | { | |
346 | ss->session_id_length = 0; | |
347 | goto sess_id_done; | |
348 | } | |
349 | #endif | |
dc644fe2 GT |
350 | /* Choose which callback will set the session ID */ |
351 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); | |
352 | if(s->generate_session_id) | |
353 | cb = s->generate_session_id; | |
1aeb3da8 BM |
354 | else if(s->session_ctx->generate_session_id) |
355 | cb = s->session_ctx->generate_session_id; | |
dc644fe2 GT |
356 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); |
357 | /* Choose a session ID */ | |
358 | tmp = ss->session_id_length; | |
359 | if(!cb(s, ss->session_id, &tmp)) | |
360 | { | |
361 | /* The callback failed */ | |
362 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, | |
363 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); | |
364 | SSL_SESSION_free(ss); | |
365 | return(0); | |
366 | } | |
367 | /* Don't allow the callback to set the session length to zero. | |
368 | * nor set it higher than it was. */ | |
369 | if(!tmp || (tmp > ss->session_id_length)) | |
d02b48c6 | 370 | { |
dc644fe2 GT |
371 | /* The callback set an illegal length */ |
372 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, | |
373 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); | |
374 | SSL_SESSION_free(ss); | |
375 | return(0); | |
376 | } | |
377 | /* If the session length was shrunk and we're SSLv2, pad it */ | |
378 | if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION)) | |
379 | memset(ss->session_id + tmp, 0, ss->session_id_length - tmp); | |
380 | else | |
381 | ss->session_id_length = tmp; | |
382 | /* Finally, check for a conflict */ | |
f85c9904 | 383 | if(SSL_has_matching_session_id(s, ss->session_id, |
dc644fe2 GT |
384 | ss->session_id_length)) |
385 | { | |
386 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, | |
387 | SSL_R_SSL_SESSION_ID_CONFLICT); | |
388 | SSL_SESSION_free(ss); | |
389 | return(0); | |
d02b48c6 | 390 | } |
a13c20f6 | 391 | #ifndef OPENSSL_NO_TLSEXT |
6434abbf | 392 | sess_id_done: |
a13c20f6 BM |
393 | if (s->tlsext_hostname) { |
394 | ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname); | |
395 | if (ss->tlsext_hostname == NULL) { | |
396 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); | |
397 | SSL_SESSION_free(ss); | |
398 | return 0; | |
399 | } | |
400 | } | |
401 | #endif | |
d02b48c6 RE |
402 | } |
403 | else | |
404 | { | |
405 | ss->session_id_length=0; | |
406 | } | |
407 | ||
5574e0ed BM |
408 | if (s->sid_ctx_length > sizeof ss->sid_ctx) |
409 | { | |
410 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); | |
411 | SSL_SESSION_free(ss); | |
412 | return 0; | |
413 | } | |
b4cadc6e BL |
414 | memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length); |
415 | ss->sid_ctx_length=s->sid_ctx_length; | |
d02b48c6 RE |
416 | s->session=ss; |
417 | ss->ssl_version=s->version; | |
b1fe6ca1 | 418 | ss->verify_result = X509_V_OK; |
d02b48c6 RE |
419 | |
420 | return(1); | |
421 | } | |
422 | ||
3c3f0259 BM |
423 | /* ssl_get_prev attempts to find an SSL_SESSION to be used to resume this |
424 | * connection. It is only called by servers. | |
425 | * | |
426 | * session_id: points at the session ID in the ClientHello. This code will | |
427 | * read past the end of this in order to parse out the session ticket | |
428 | * extension, if any. | |
429 | * len: the length of the session ID. | |
430 | * limit: a pointer to the first byte after the ClientHello. | |
431 | * | |
432 | * Returns: | |
433 | * -1: error | |
434 | * 0: a session may have been found. | |
435 | * | |
436 | * Side effects: | |
437 | * - If a session is found then s->session is pointed at it (after freeing an | |
438 | * existing session if need be) and s->verify_result is set from the session. | |
439 | * - Both for new and resumed sessions, s->tlsext_ticket_expected is set to 1 | |
440 | * if the server should issue a new session ticket (to 0 otherwise). | |
441 | */ | |
6434abbf DSH |
442 | int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len, |
443 | const unsigned char *limit) | |
d02b48c6 | 444 | { |
b56bce4f BM |
445 | /* This is used only by servers. */ |
446 | ||
6434abbf | 447 | SSL_SESSION *ret=NULL; |
8876bc05 | 448 | int fatal = 0; |
3c3f0259 | 449 | int try_session_cache = 1; |
6434abbf DSH |
450 | #ifndef OPENSSL_NO_TLSEXT |
451 | int r; | |
452 | #endif | |
d02b48c6 | 453 | |
d02b48c6 | 454 | if (len > SSL_MAX_SSL_SESSION_ID_LENGTH) |
8876bc05 | 455 | goto err; |
3c3f0259 BM |
456 | |
457 | if (len == 0) | |
458 | try_session_cache = 0; | |
459 | ||
6434abbf | 460 | #ifndef OPENSSL_NO_TLSEXT |
3c3f0259 BM |
461 | r = tls1_process_ticket(s, session_id, len, limit, &ret); /* sets s->tlsext_ticket_expected */ |
462 | switch (r) | |
6434abbf | 463 | { |
3c3f0259 | 464 | case -1: /* Error during processing */ |
6434abbf DSH |
465 | fatal = 1; |
466 | goto err; | |
3c3f0259 BM |
467 | case 0: /* No ticket found */ |
468 | case 1: /* Zero length ticket found */ | |
469 | break; /* Ok to carry on processing session id. */ | |
470 | case 2: /* Ticket found but not decrypted. */ | |
471 | case 3: /* Ticket decrypted, *ret has been set. */ | |
472 | try_session_cache = 0; | |
473 | break; | |
474 | default: | |
475 | abort(); | |
6434abbf | 476 | } |
6434abbf | 477 | #endif |
3c3f0259 BM |
478 | |
479 | if (try_session_cache && | |
480 | ret == NULL && | |
481 | !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) | |
58964a49 | 482 | { |
6434abbf DSH |
483 | SSL_SESSION data; |
484 | data.ssl_version=s->version; | |
485 | data.session_id_length=len; | |
486 | if (len == 0) | |
487 | return 0; | |
488 | memcpy(data.session_id,session_id,len); | |
58964a49 | 489 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); |
3c1d6bbc | 490 | ret=lh_SSL_SESSION_retrieve(s->session_ctx->sessions,&data); |
bdc98ffb | 491 | if (ret != NULL) |
3c3f0259 BM |
492 | { |
493 | /* don't allow other threads to steal it: */ | |
494 | CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); | |
495 | } | |
58964a49 | 496 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); |
3c3f0259 BM |
497 | if (ret == NULL) |
498 | s->session_ctx->stats.sess_miss++; | |
58964a49 | 499 | } |
d02b48c6 | 500 | |
3c3f0259 BM |
501 | if (try_session_cache && |
502 | ret == NULL && | |
503 | s->session_ctx->get_session_cb != NULL) | |
d02b48c6 | 504 | { |
9a193d88 BM |
505 | int copy=1; |
506 | ||
3c3f0259 | 507 | if ((ret=s->session_ctx->get_session_cb(s,session_id,len,©))) |
d02b48c6 | 508 | { |
1aeb3da8 | 509 | s->session_ctx->stats.sess_cb_hit++; |
d02b48c6 | 510 | |
8876bc05 BM |
511 | /* Increment reference count now if the session callback |
512 | * asks us to do so (note that if the session structures | |
513 | * returned by the callback are shared between threads, | |
514 | * it must handle the reference count itself [i.e. copy == 0], | |
515 | * or things won't be thread-safe). */ | |
516 | if (copy) | |
517 | CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); | |
518 | ||
e0db2eed GT |
519 | /* Add the externally cached session to the internal |
520 | * cache as well if and only if we are supposed to. */ | |
1aeb3da8 | 521 | if(!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE)) |
e0db2eed GT |
522 | /* The following should not return 1, otherwise, |
523 | * things are very strange */ | |
1aeb3da8 | 524 | SSL_CTX_add_session(s->session_ctx,ret); |
d02b48c6 | 525 | } |
d02b48c6 RE |
526 | } |
527 | ||
3c3f0259 BM |
528 | if (ret == NULL) |
529 | goto err; | |
530 | ||
531 | /* Now ret is non-NULL and we own one of its reference counts. */ | |
8876bc05 | 532 | |
0f32c841 BM |
533 | if (ret->sid_ctx_length != s->sid_ctx_length |
534 | || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length)) | |
535 | { | |
3c3f0259 | 536 | /* We have the session requested by the client, but we don't |
8876bc05 | 537 | * want to use it in this context. */ |
0f32c841 BM |
538 | goto err; /* treat like cache miss */ |
539 | } | |
540 | ||
541 | if((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) | |
542 | { | |
543 | /* We can't be sure if this session is being used out of | |
544 | * context, which is especially important for SSL_VERIFY_PEER. | |
545 | * The application should have used SSL[_CTX]_set_session_id_context. | |
546 | * | |
547 | * For this error case, we generate an error instead of treating | |
548 | * the event like a cache miss (otherwise it would be easy for | |
549 | * applications to effectively disable the session cache by | |
550 | * accident without anyone noticing). | |
551 | */ | |
552 | ||
553 | SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); | |
554 | fatal = 1; | |
555 | goto err; | |
8876bc05 | 556 | } |
b4cadc6e | 557 | |
d02b48c6 RE |
558 | if (ret->cipher == NULL) |
559 | { | |
c5db363e | 560 | unsigned char buf[5],*p; |
d02b48c6 RE |
561 | unsigned long l; |
562 | ||
563 | p=buf; | |
564 | l=ret->cipher_id; | |
565 | l2n(l,p); | |
868f5e44 | 566 | if ((ret->ssl_version>>8) >= SSL3_VERSION_MAJOR) |
d02b48c6 RE |
567 | ret->cipher=ssl_get_cipher_by_char(s,&(buf[2])); |
568 | else | |
569 | ret->cipher=ssl_get_cipher_by_char(s,&(buf[1])); | |
570 | if (ret->cipher == NULL) | |
8876bc05 | 571 | goto err; |
d02b48c6 RE |
572 | } |
573 | ||
7476f3ac | 574 | if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */ |
d02b48c6 | 575 | { |
1aeb3da8 | 576 | s->session_ctx->stats.sess_timeout++; |
3c3f0259 BM |
577 | if (try_session_cache) |
578 | { | |
579 | /* session was from the cache, so remove it */ | |
580 | SSL_CTX_remove_session(s->session_ctx,ret); | |
581 | } | |
8876bc05 | 582 | goto err; |
d02b48c6 RE |
583 | } |
584 | ||
1aeb3da8 | 585 | s->session_ctx->stats.sess_hit++; |
d02b48c6 | 586 | |
d02b48c6 RE |
587 | if (s->session != NULL) |
588 | SSL_SESSION_free(s->session); | |
589 | s->session=ret; | |
b1fe6ca1 | 590 | s->verify_result = s->session->verify_result; |
3c3f0259 | 591 | return 1; |
8876bc05 BM |
592 | |
593 | err: | |
594 | if (ret != NULL) | |
3c3f0259 | 595 | { |
8876bc05 | 596 | SSL_SESSION_free(ret); |
271daaf7 | 597 | #ifndef OPENSSL_NO_TLSEXT |
3c3f0259 BM |
598 | if (!try_session_cache) |
599 | { | |
600 | /* The session was from a ticket, so we should | |
601 | * issue a ticket for the new session */ | |
602 | s->tlsext_ticket_expected = 1; | |
603 | } | |
271daaf7 | 604 | #endif |
3c3f0259 | 605 | } |
8876bc05 BM |
606 | if (fatal) |
607 | return -1; | |
608 | else | |
609 | return 0; | |
d02b48c6 RE |
610 | } |
611 | ||
6b691a5c | 612 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
d02b48c6 | 613 | { |
58964a49 | 614 | int ret=0; |
d02b48c6 RE |
615 | SSL_SESSION *s; |
616 | ||
45fd4dbb BM |
617 | /* add just 1 reference count for the SSL_CTX's session cache |
618 | * even though it has two ways of access: each session is in a | |
619 | * doubly linked list and an lhash */ | |
d02b48c6 | 620 | CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION); |
45fd4dbb | 621 | /* if session c is in already in cache, we take back the increment later */ |
d02b48c6 RE |
622 | |
623 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
3c1d6bbc | 624 | s=lh_SSL_SESSION_insert(ctx->sessions,c); |
58964a49 | 625 | |
45fd4dbb BM |
626 | /* s != NULL iff we already had a session with the given PID. |
627 | * In this case, s == c should hold (then we did not really modify | |
628 | * ctx->sessions), or we're in trouble. */ | |
629 | if (s != NULL && s != c) | |
630 | { | |
631 | /* We *are* in trouble ... */ | |
632 | SSL_SESSION_list_remove(ctx,s); | |
633 | SSL_SESSION_free(s); | |
634 | /* ... so pretend the other session did not exist in cache | |
635 | * (we cannot handle two SSL_SESSION structures with identical | |
636 | * session ID in the same cache, which could happen e.g. when | |
637 | * two threads concurrently obtain the same session from an external | |
638 | * cache) */ | |
639 | s = NULL; | |
640 | } | |
641 | ||
642 | /* Put at the head of the queue unless it is already in the cache */ | |
58964a49 RE |
643 | if (s == NULL) |
644 | SSL_SESSION_list_add(ctx,c); | |
d02b48c6 | 645 | |
d02b48c6 RE |
646 | if (s != NULL) |
647 | { | |
45fd4dbb BM |
648 | /* existing cache entry -- decrement previously incremented reference |
649 | * count because it already takes into account the cache */ | |
650 | ||
651 | SSL_SESSION_free(s); /* s == c */ | |
58964a49 | 652 | ret=0; |
d02b48c6 RE |
653 | } |
654 | else | |
58964a49 | 655 | { |
45fd4dbb BM |
656 | /* new cache entry -- remove old ones if cache has become too large */ |
657 | ||
58964a49 RE |
658 | ret=1; |
659 | ||
660 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) | |
661 | { | |
662 | while (SSL_CTX_sess_number(ctx) > | |
663 | SSL_CTX_sess_get_cache_size(ctx)) | |
664 | { | |
801294f8 DSH |
665 | if (!remove_session_lock(ctx, |
666 | ctx->session_cache_tail, 0)) | |
58964a49 RE |
667 | break; |
668 | else | |
413c4f45 | 669 | ctx->stats.sess_cache_full++; |
58964a49 RE |
670 | } |
671 | } | |
672 | } | |
673 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
674 | return(ret); | |
d02b48c6 RE |
675 | } |
676 | ||
6b691a5c | 677 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
801294f8 DSH |
678 | { |
679 | return remove_session_lock(ctx, c, 1); | |
680 | } | |
681 | ||
0fda2e37 | 682 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) |
d02b48c6 RE |
683 | { |
684 | SSL_SESSION *r; | |
685 | int ret=0; | |
686 | ||
58964a49 | 687 | if ((c != NULL) && (c->session_id_length != 0)) |
d02b48c6 | 688 | { |
801294f8 | 689 | if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); |
3c1d6bbc | 690 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions,c)) == c) |
58964a49 RE |
691 | { |
692 | ret=1; | |
3c1d6bbc | 693 | r=lh_SSL_SESSION_delete(ctx->sessions,c); |
58964a49 RE |
694 | SSL_SESSION_list_remove(ctx,c); |
695 | } | |
d02b48c6 | 696 | |
801294f8 | 697 | if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); |
d02b48c6 RE |
698 | |
699 | if (ret) | |
700 | { | |
701 | r->not_resumable=1; | |
702 | if (ctx->remove_session_cb != NULL) | |
58964a49 | 703 | ctx->remove_session_cb(ctx,r); |
d02b48c6 RE |
704 | SSL_SESSION_free(r); |
705 | } | |
706 | } | |
707 | else | |
708 | ret=0; | |
709 | return(ret); | |
710 | } | |
711 | ||
6b691a5c | 712 | void SSL_SESSION_free(SSL_SESSION *ss) |
d02b48c6 RE |
713 | { |
714 | int i; | |
715 | ||
e03ddfae BL |
716 | if(ss == NULL) |
717 | return; | |
718 | ||
d02b48c6 | 719 | i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION); |
58964a49 RE |
720 | #ifdef REF_PRINT |
721 | REF_PRINT("SSL_SESSION",ss); | |
722 | #endif | |
d02b48c6 RE |
723 | if (i > 0) return; |
724 | #ifdef REF_CHECK | |
725 | if (i < 0) | |
726 | { | |
727 | fprintf(stderr,"SSL_SESSION_free, bad reference count\n"); | |
728 | abort(); /* ok */ | |
729 | } | |
730 | #endif | |
731 | ||
79aa04ef | 732 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
58964a49 | 733 | |
4579924b RL |
734 | OPENSSL_cleanse(ss->key_arg,sizeof ss->key_arg); |
735 | OPENSSL_cleanse(ss->master_key,sizeof ss->master_key); | |
736 | OPENSSL_cleanse(ss->session_id,sizeof ss->session_id); | |
b56bce4f | 737 | if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert); |
d02b48c6 | 738 | if (ss->peer != NULL) X509_free(ss->peer); |
f73e07cf | 739 | if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers); |
ed3883d2 | 740 | #ifndef OPENSSL_NO_TLSEXT |
f1fd4544 | 741 | if (ss->tlsext_hostname != NULL) OPENSSL_free(ss->tlsext_hostname); |
6434abbf | 742 | if (ss->tlsext_tick != NULL) OPENSSL_free(ss->tlsext_tick); |
36ca4ba6 BM |
743 | #ifndef OPENSSL_NO_EC |
744 | ss->tlsext_ecpointformatlist_length = 0; | |
745 | if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist); | |
33273721 BM |
746 | ss->tlsext_ellipticcurvelist_length = 0; |
747 | if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist); | |
36ca4ba6 | 748 | #endif /* OPENSSL_NO_EC */ |
ddac1974 NL |
749 | #endif |
750 | #ifndef OPENSSL_NO_PSK | |
751 | if (ss->psk_identity_hint != NULL) | |
752 | OPENSSL_free(ss->psk_identity_hint); | |
753 | if (ss->psk_identity != NULL) | |
754 | OPENSSL_free(ss->psk_identity); | |
a149b246 BL |
755 | #endif |
756 | #ifndef OPENSSL_NO_SRP | |
757 | if (ss->srp_username != NULL) | |
758 | OPENSSL_free(ss->srp_username); | |
ed3883d2 | 759 | #endif |
4579924b | 760 | OPENSSL_cleanse(ss,sizeof(*ss)); |
26a3a48d | 761 | OPENSSL_free(ss); |
d02b48c6 RE |
762 | } |
763 | ||
6b691a5c | 764 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
d02b48c6 RE |
765 | { |
766 | int ret=0; | |
4ebb342f | 767 | const SSL_METHOD *meth; |
d02b48c6 RE |
768 | |
769 | if (session != NULL) | |
770 | { | |
771 | meth=s->ctx->method->get_ssl_method(session->ssl_version); | |
772 | if (meth == NULL) | |
773 | meth=s->method->get_ssl_method(session->ssl_version); | |
774 | if (meth == NULL) | |
775 | { | |
776 | SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD); | |
777 | return(0); | |
778 | } | |
779 | ||
780 | if (meth != s->method) | |
781 | { | |
782 | if (!SSL_set_ssl_method(s,meth)) | |
783 | return(0); | |
d02b48c6 RE |
784 | } |
785 | ||
882e8912 RL |
786 | #ifndef OPENSSL_NO_KRB5 |
787 | if (s->kssl_ctx && !s->kssl_ctx->client_princ && | |
788 | session->krb5_client_princ_len > 0) | |
789 | { | |
15780a1e | 790 | s->kssl_ctx->client_princ = (char *)OPENSSL_malloc(session->krb5_client_princ_len + 1); |
882e8912 RL |
791 | memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ, |
792 | session->krb5_client_princ_len); | |
c2a3358b | 793 | s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0'; |
882e8912 RL |
794 | } |
795 | #endif /* OPENSSL_NO_KRB5 */ | |
796 | ||
d02b48c6 RE |
797 | /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/ |
798 | CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION); | |
799 | if (s->session != NULL) | |
800 | SSL_SESSION_free(s->session); | |
801 | s->session=session; | |
0dd2254d | 802 | s->verify_result = s->session->verify_result; |
d02b48c6 RE |
803 | /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/ |
804 | ret=1; | |
805 | } | |
58964a49 RE |
806 | else |
807 | { | |
808 | if (s->session != NULL) | |
809 | { | |
810 | SSL_SESSION_free(s->session); | |
811 | s->session=NULL; | |
812 | } | |
413c4f45 MC |
813 | |
814 | meth=s->ctx->method; | |
815 | if (meth != s->method) | |
816 | { | |
817 | if (!SSL_set_ssl_method(s,meth)) | |
818 | return(0); | |
819 | } | |
820 | ret=1; | |
58964a49 | 821 | } |
d02b48c6 RE |
822 | return(ret); |
823 | } | |
824 | ||
6b691a5c | 825 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
d02b48c6 RE |
826 | { |
827 | if (s == NULL) return(0); | |
828 | s->timeout=t; | |
829 | return(1); | |
830 | } | |
831 | ||
0821bcd4 | 832 | long SSL_SESSION_get_timeout(const SSL_SESSION *s) |
d02b48c6 RE |
833 | { |
834 | if (s == NULL) return(0); | |
835 | return(s->timeout); | |
836 | } | |
837 | ||
0821bcd4 | 838 | long SSL_SESSION_get_time(const SSL_SESSION *s) |
d02b48c6 RE |
839 | { |
840 | if (s == NULL) return(0); | |
841 | return(s->time); | |
842 | } | |
843 | ||
6b691a5c | 844 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
d02b48c6 RE |
845 | { |
846 | if (s == NULL) return(0); | |
847 | s->time=t; | |
848 | return(t); | |
849 | } | |
850 | ||
74096890 DSH |
851 | X509 *SSL_SESSION_get0_peer(SSL_SESSION *s) |
852 | { | |
853 | return s->peer; | |
854 | } | |
855 | ||
856 | int SSL_SESSION_set1_id_context(SSL_SESSION *s,const unsigned char *sid_ctx, | |
857 | unsigned int sid_ctx_len) | |
74096890 | 858 | { |
3c3f0259 BM |
859 | if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) |
860 | { | |
861 | SSLerr(SSL_F_SSL_SESSION_SET1_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
862 | return 0; | |
863 | } | |
864 | s->sid_ctx_length=sid_ctx_len; | |
865 | memcpy(s->sid_ctx,sid_ctx,sid_ctx_len); | |
74096890 | 866 | |
3c3f0259 BM |
867 | return 1; |
868 | } | |
74096890 | 869 | |
6b691a5c | 870 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
413c4f45 MC |
871 | { |
872 | long l; | |
873 | if (s == NULL) return(0); | |
874 | l=s->session_timeout; | |
875 | s->session_timeout=t; | |
876 | return(l); | |
877 | } | |
878 | ||
0821bcd4 | 879 | long SSL_CTX_get_timeout(const SSL_CTX *s) |
413c4f45 MC |
880 | { |
881 | if (s == NULL) return(0); | |
882 | return(s->session_timeout); | |
883 | } | |
884 | ||
12bf56c0 DSH |
885 | #ifndef OPENSSL_NO_TLSEXT |
886 | int SSL_set_session_secret_cb(SSL *s, int (*tls_session_secret_cb)(SSL *s, void *secret, int *secret_len, | |
887 | STACK_OF(SSL_CIPHER) *peer_ciphers, SSL_CIPHER **cipher, void *arg), void *arg) | |
888 | { | |
889 | if (s == NULL) return(0); | |
890 | s->tls_session_secret_cb = tls_session_secret_cb; | |
891 | s->tls_session_secret_cb_arg = arg; | |
892 | return(1); | |
893 | } | |
894 | ||
895 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, | |
896 | void *arg) | |
897 | { | |
898 | if (s == NULL) return(0); | |
899 | s->tls_session_ticket_ext_cb = cb; | |
900 | s->tls_session_ticket_ext_cb_arg = arg; | |
901 | return(1); | |
902 | } | |
903 | ||
904 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) | |
905 | { | |
906 | if (s->version >= TLS1_VERSION) | |
907 | { | |
908 | if (s->tlsext_session_ticket) | |
909 | { | |
910 | OPENSSL_free(s->tlsext_session_ticket); | |
911 | s->tlsext_session_ticket = NULL; | |
912 | } | |
913 | ||
914 | s->tlsext_session_ticket = OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); | |
915 | if (!s->tlsext_session_ticket) | |
916 | { | |
917 | SSLerr(SSL_F_SSL_SET_SESSION_TICKET_EXT, ERR_R_MALLOC_FAILURE); | |
918 | return 0; | |
919 | } | |
920 | ||
921 | if (ext_data) | |
922 | { | |
923 | s->tlsext_session_ticket->length = ext_len; | |
924 | s->tlsext_session_ticket->data = s->tlsext_session_ticket + 1; | |
925 | memcpy(s->tlsext_session_ticket->data, ext_data, ext_len); | |
926 | } | |
927 | else | |
928 | { | |
929 | s->tlsext_session_ticket->length = 0; | |
930 | s->tlsext_session_ticket->data = NULL; | |
931 | } | |
932 | ||
933 | return 1; | |
934 | } | |
935 | ||
936 | return 0; | |
937 | } | |
938 | #endif /* OPENSSL_NO_TLSEXT */ | |
939 | ||
d02b48c6 RE |
940 | typedef struct timeout_param_st |
941 | { | |
942 | SSL_CTX *ctx; | |
943 | long time; | |
3c1d6bbc | 944 | LHASH_OF(SSL_SESSION) *cache; |
d02b48c6 RE |
945 | } TIMEOUT_PARAM; |
946 | ||
3c1d6bbc | 947 | static void timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p) |
d02b48c6 RE |
948 | { |
949 | if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */ | |
950 | { | |
58964a49 RE |
951 | /* The reason we don't call SSL_CTX_remove_session() is to |
952 | * save on locking overhead */ | |
d4cdbab9 | 953 | (void)lh_SSL_SESSION_delete(p->cache,s); |
58964a49 | 954 | SSL_SESSION_list_remove(p->ctx,s); |
d02b48c6 RE |
955 | s->not_resumable=1; |
956 | if (p->ctx->remove_session_cb != NULL) | |
957 | p->ctx->remove_session_cb(p->ctx,s); | |
958 | SSL_SESSION_free(s); | |
959 | } | |
960 | } | |
961 | ||
3c1d6bbc | 962 | static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION, TIMEOUT_PARAM) |
3c914840 | 963 | |
6b691a5c | 964 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
d02b48c6 RE |
965 | { |
966 | unsigned long i; | |
967 | TIMEOUT_PARAM tp; | |
968 | ||
969 | tp.ctx=s; | |
413c4f45 | 970 | tp.cache=s->sessions; |
d02b48c6 RE |
971 | if (tp.cache == NULL) return; |
972 | tp.time=t; | |
973 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
3c1d6bbc BL |
974 | i=CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load; |
975 | CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=0; | |
976 | lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout), | |
977 | TIMEOUT_PARAM, &tp); | |
978 | CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=i; | |
d02b48c6 RE |
979 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); |
980 | } | |
981 | ||
6b691a5c | 982 | int ssl_clear_bad_session(SSL *s) |
d02b48c6 RE |
983 | { |
984 | if ( (s->session != NULL) && | |
985 | !(s->shutdown & SSL_SENT_SHUTDOWN) && | |
986 | !(SSL_in_init(s) || SSL_in_before(s))) | |
987 | { | |
988 | SSL_CTX_remove_session(s->ctx,s->session); | |
989 | return(1); | |
990 | } | |
991 | else | |
992 | return(0); | |
993 | } | |
58964a49 RE |
994 | |
995 | /* locked by SSL_CTX in the calling function */ | |
6b691a5c | 996 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
58964a49 RE |
997 | { |
998 | if ((s->next == NULL) || (s->prev == NULL)) return; | |
999 | ||
1000 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) | |
1001 | { /* last element in list */ | |
1002 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) | |
1003 | { /* only one element in list */ | |
1004 | ctx->session_cache_head=NULL; | |
1005 | ctx->session_cache_tail=NULL; | |
1006 | } | |
1007 | else | |
1008 | { | |
1009 | ctx->session_cache_tail=s->prev; | |
1010 | s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail); | |
1011 | } | |
1012 | } | |
1013 | else | |
1014 | { | |
1015 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) | |
1016 | { /* first element in list */ | |
1017 | ctx->session_cache_head=s->next; | |
1018 | s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head); | |
1019 | } | |
1020 | else | |
1021 | { /* middle of list */ | |
1022 | s->next->prev=s->prev; | |
1023 | s->prev->next=s->next; | |
1024 | } | |
1025 | } | |
1026 | s->prev=s->next=NULL; | |
1027 | } | |
1028 | ||
6b691a5c | 1029 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
58964a49 RE |
1030 | { |
1031 | if ((s->next != NULL) && (s->prev != NULL)) | |
1032 | SSL_SESSION_list_remove(ctx,s); | |
1033 | ||
1034 | if (ctx->session_cache_head == NULL) | |
1035 | { | |
1036 | ctx->session_cache_head=s; | |
1037 | ctx->session_cache_tail=s; | |
1038 | s->prev=(SSL_SESSION *)&(ctx->session_cache_head); | |
1039 | s->next=(SSL_SESSION *)&(ctx->session_cache_tail); | |
1040 | } | |
1041 | else | |
1042 | { | |
1043 | s->next=ctx->session_cache_head; | |
1044 | s->next->prev=s; | |
1045 | s->prev=(SSL_SESSION *)&(ctx->session_cache_head); | |
1046 | ctx->session_cache_head=s; | |
1047 | } | |
1048 | } | |
1049 | ||
7806f3dd NL |
1050 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
1051 | int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess)) | |
1052 | { | |
1053 | ctx->new_session_cb=cb; | |
1054 | } | |
1055 | ||
d137b56a | 1056 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess) |
7806f3dd NL |
1057 | { |
1058 | return ctx->new_session_cb; | |
1059 | } | |
1060 | ||
1061 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, | |
d137b56a | 1062 | void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess)) |
7806f3dd NL |
1063 | { |
1064 | ctx->remove_session_cb=cb; | |
1065 | } | |
1066 | ||
d137b56a | 1067 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess) |
7806f3dd NL |
1068 | { |
1069 | return ctx->remove_session_cb; | |
1070 | } | |
1071 | ||
1072 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, | |
1073 | SSL_SESSION *(*cb)(struct ssl_st *ssl, | |
1074 | unsigned char *data,int len,int *copy)) | |
1075 | { | |
1076 | ctx->get_session_cb=cb; | |
1077 | } | |
1078 | ||
d137b56a DSH |
1079 | SSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, |
1080 | unsigned char *data,int len,int *copy) | |
7806f3dd NL |
1081 | { |
1082 | return ctx->get_session_cb; | |
1083 | } | |
1084 | ||
1085 | void SSL_CTX_set_info_callback(SSL_CTX *ctx, | |
1086 | void (*cb)(const SSL *ssl,int type,int val)) | |
1087 | { | |
1088 | ctx->info_callback=cb; | |
1089 | } | |
1090 | ||
d137b56a | 1091 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val) |
7806f3dd NL |
1092 | { |
1093 | return ctx->info_callback; | |
1094 | } | |
1095 | ||
1096 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, | |
1097 | int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey)) | |
1098 | { | |
1099 | ctx->client_cert_cb=cb; | |
1100 | } | |
1101 | ||
d137b56a | 1102 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey) |
7806f3dd NL |
1103 | { |
1104 | return ctx->client_cert_cb; | |
1105 | } | |
1106 | ||
368888bc DSH |
1107 | #ifndef OPENSSL_NO_ENGINE |
1108 | int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e) | |
1109 | { | |
1110 | if (!ENGINE_init(e)) | |
1111 | { | |
1112 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB); | |
1113 | return 0; | |
1114 | } | |
1115 | if(!ENGINE_get_ssl_client_cert_function(e)) | |
1116 | { | |
1117 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, SSL_R_NO_CLIENT_CERT_METHOD); | |
1118 | ENGINE_finish(e); | |
1119 | return 0; | |
1120 | } | |
1121 | ctx->client_cert_engine = e; | |
1122 | return 1; | |
1123 | } | |
1124 | #endif | |
1125 | ||
7806f3dd NL |
1126 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, |
1127 | int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len)) | |
1128 | { | |
1129 | ctx->app_gen_cookie_cb=cb; | |
1130 | } | |
1131 | ||
1132 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, | |
1133 | int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len)) | |
1134 | { | |
1135 | ctx->app_verify_cookie_cb=cb; | |
1136 | } | |
1137 | ||
3c07d3a3 | 1138 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) |