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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 | */ | |
58 | ||
59 | #include <stdio.h> | |
ec577822 BM |
60 | #include <openssl/lhash.h> |
61 | #include <openssl/rand.h> | |
d02b48c6 RE |
62 | #include "ssl_locl.h" |
63 | ||
58964a49 RE |
64 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); |
65 | static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s); | |
dfeab068 | 66 | static int ssl_session_num=0; |
58964a49 RE |
67 | static STACK *ssl_session_meth=NULL; |
68 | ||
6b691a5c | 69 | SSL_SESSION *SSL_get_session(SSL *ssl) |
58964a49 RE |
70 | { |
71 | return(ssl->session); | |
72 | } | |
73 | ||
6b691a5c UM |
74 | int SSL_SESSION_get_ex_new_index(long argl, char *argp, int (*new_func)(), |
75 | int (*dup_func)(), void (*free_func)()) | |
58964a49 RE |
76 | { |
77 | ssl_session_num++; | |
78 | return(CRYPTO_get_ex_new_index(ssl_session_num-1, | |
79 | &ssl_session_meth, | |
80 | argl,argp,new_func,dup_func,free_func)); | |
81 | } | |
82 | ||
6b691a5c | 83 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
58964a49 RE |
84 | { |
85 | return(CRYPTO_set_ex_data(&s->ex_data,idx,arg)); | |
86 | } | |
87 | ||
6b691a5c | 88 | void *SSL_SESSION_get_ex_data(SSL_SESSION *s, int idx) |
58964a49 RE |
89 | { |
90 | return(CRYPTO_get_ex_data(&s->ex_data,idx)); | |
91 | } | |
92 | ||
6b691a5c | 93 | SSL_SESSION *SSL_SESSION_new(void) |
d02b48c6 RE |
94 | { |
95 | SSL_SESSION *ss; | |
96 | ||
97 | ss=(SSL_SESSION *)Malloc(sizeof(SSL_SESSION)); | |
98 | if (ss == NULL) | |
99 | { | |
100 | SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE); | |
101 | return(0); | |
102 | } | |
103 | memset(ss,0,sizeof(SSL_SESSION)); | |
104 | ||
105 | ss->references=1; | |
106 | ss->timeout=60*5+4; /* 5 minute timeout by default */ | |
107 | ss->time=time(NULL); | |
58964a49 RE |
108 | ss->prev=NULL; |
109 | ss->next=NULL; | |
413c4f45 | 110 | ss->compress_meth=0; |
58964a49 | 111 | CRYPTO_new_ex_data(ssl_session_meth,(char *)ss,&ss->ex_data); |
d02b48c6 RE |
112 | return(ss); |
113 | } | |
114 | ||
6b691a5c | 115 | int ssl_get_new_session(SSL *s, int session) |
d02b48c6 RE |
116 | { |
117 | SSL_SESSION *ss=NULL; | |
118 | ||
119 | if ((ss=SSL_SESSION_new()) == NULL) return(0); | |
120 | ||
121 | /* If the context has a default timeout, use it */ | |
413c4f45 | 122 | if (s->ctx->session_timeout == 0) |
d02b48c6 | 123 | ss->timeout=SSL_get_default_timeout(s); |
413c4f45 MC |
124 | else |
125 | ss->timeout=s->ctx->session_timeout; | |
d02b48c6 RE |
126 | |
127 | if (s->session != NULL) | |
128 | { | |
129 | SSL_SESSION_free(s->session); | |
130 | s->session=NULL; | |
131 | } | |
132 | ||
133 | if (session) | |
134 | { | |
6d02d8e4 | 135 | if (s->version == SSL2_VERSION) |
d02b48c6 | 136 | { |
58964a49 | 137 | ss->ssl_version=SSL2_VERSION; |
d02b48c6 RE |
138 | ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH; |
139 | } | |
58964a49 | 140 | else if (s->version == SSL3_VERSION) |
d02b48c6 | 141 | { |
58964a49 RE |
142 | ss->ssl_version=SSL3_VERSION; |
143 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; | |
144 | } | |
145 | else if (s->version == TLS1_VERSION) | |
146 | { | |
147 | ss->ssl_version=TLS1_VERSION; | |
d02b48c6 RE |
148 | ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH; |
149 | } | |
150 | else | |
151 | { | |
152 | SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION); | |
153 | SSL_SESSION_free(ss); | |
154 | return(0); | |
155 | } | |
156 | ||
157 | for (;;) | |
158 | { | |
159 | SSL_SESSION *r; | |
160 | ||
161 | RAND_bytes(ss->session_id,ss->session_id_length); | |
162 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); | |
163 | r=(SSL_SESSION *)lh_retrieve(s->ctx->sessions, | |
164 | (char *)ss); | |
165 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); | |
166 | if (r == NULL) break; | |
167 | /* else - woops a session_id match */ | |
168 | } | |
169 | } | |
170 | else | |
171 | { | |
172 | ss->session_id_length=0; | |
173 | } | |
174 | ||
b4cadc6e BL |
175 | memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length); |
176 | ss->sid_ctx_length=s->sid_ctx_length; | |
d02b48c6 RE |
177 | s->session=ss; |
178 | ss->ssl_version=s->version; | |
179 | ||
180 | return(1); | |
181 | } | |
182 | ||
6b691a5c | 183 | int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len) |
d02b48c6 | 184 | { |
58964a49 | 185 | SSL_SESSION *ret=NULL,data; |
b4cadc6e | 186 | int copy=1; |
d02b48c6 RE |
187 | |
188 | /* conn_init();*/ | |
189 | data.ssl_version=s->version; | |
190 | data.session_id_length=len; | |
191 | if (len > SSL_MAX_SSL_SESSION_ID_LENGTH) | |
192 | return(0); | |
b4cadc6e | 193 | memcpy(data.session_id,session_id,len); |
d02b48c6 | 194 | |
58964a49 RE |
195 | if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) |
196 | { | |
197 | CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); | |
198 | ret=(SSL_SESSION *)lh_retrieve(s->ctx->sessions,(char *)&data); | |
199 | CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX); | |
200 | } | |
d02b48c6 RE |
201 | |
202 | if (ret == NULL) | |
203 | { | |
413c4f45 | 204 | s->ctx->stats.sess_miss++; |
d02b48c6 | 205 | ret=NULL; |
b4cadc6e BL |
206 | if (s->ctx->get_session_cb != NULL |
207 | && (ret=s->ctx->get_session_cb(s,session_id,len,©)) | |
208 | != NULL) | |
d02b48c6 | 209 | { |
413c4f45 | 210 | s->ctx->stats.sess_cb_hit++; |
d02b48c6 RE |
211 | |
212 | /* The following should not return 1, otherwise, | |
213 | * things are very strange */ | |
214 | SSL_CTX_add_session(s->ctx,ret); | |
d02b48c6 RE |
215 | } |
216 | if (ret == NULL) return(0); | |
217 | } | |
218 | ||
b4cadc6e BL |
219 | if((s->verify_mode&SSL_VERIFY_PEER) |
220 | && (!s->sid_ctx_length || ret->sid_ctx_length != s->sid_ctx_length | |
221 | || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length))) | |
222 | { | |
223 | SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT); | |
224 | return 0; | |
225 | } | |
226 | ||
227 | /* auto free it */ | |
228 | if (!copy) | |
229 | SSL_SESSION_free(ret); | |
230 | ||
d02b48c6 RE |
231 | if (ret->cipher == NULL) |
232 | { | |
c5db363e | 233 | unsigned char buf[5],*p; |
d02b48c6 RE |
234 | unsigned long l; |
235 | ||
236 | p=buf; | |
237 | l=ret->cipher_id; | |
238 | l2n(l,p); | |
58964a49 | 239 | if ((ret->ssl_version>>8) == SSL3_VERSION_MAJOR) |
d02b48c6 RE |
240 | ret->cipher=ssl_get_cipher_by_char(s,&(buf[2])); |
241 | else | |
242 | ret->cipher=ssl_get_cipher_by_char(s,&(buf[1])); | |
243 | if (ret->cipher == NULL) | |
244 | return(0); | |
245 | } | |
246 | ||
247 | /* If a thread got the session, then 'swaped', and another got | |
248 | * it and then due to a time-out decided to 'Free' it we could | |
249 | * be in trouble. So I'll increment it now, then double decrement | |
250 | * later - am I speaking rubbish?. */ | |
251 | CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION); | |
252 | ||
253 | if ((long)(ret->time+ret->timeout) < (long)time(NULL)) /* timeout */ | |
254 | { | |
413c4f45 | 255 | s->ctx->stats.sess_timeout++; |
d02b48c6 RE |
256 | /* remove it from the cache */ |
257 | SSL_CTX_remove_session(s->ctx,ret); | |
258 | SSL_SESSION_free(ret); /* again to actually Free it */ | |
259 | return(0); | |
260 | } | |
261 | ||
413c4f45 | 262 | s->ctx->stats.sess_hit++; |
d02b48c6 RE |
263 | |
264 | /* ret->time=time(NULL); */ /* rezero timeout? */ | |
265 | /* again, just leave the session | |
266 | * if it is the same session, we have just incremented and | |
267 | * then decremented the reference count :-) */ | |
268 | if (s->session != NULL) | |
269 | SSL_SESSION_free(s->session); | |
270 | s->session=ret; | |
271 | return(1); | |
272 | } | |
273 | ||
6b691a5c | 274 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
d02b48c6 | 275 | { |
58964a49 | 276 | int ret=0; |
d02b48c6 RE |
277 | SSL_SESSION *s; |
278 | ||
279 | /* conn_init(); */ | |
280 | CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION); | |
281 | ||
282 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
283 | s=(SSL_SESSION *)lh_insert(ctx->sessions,(char *)c); | |
58964a49 RE |
284 | |
285 | /* Put on the end of the queue unless it is already in the cache */ | |
286 | if (s == NULL) | |
287 | SSL_SESSION_list_add(ctx,c); | |
d02b48c6 RE |
288 | |
289 | /* If the same session if is being 're-added', Free the old | |
290 | * one when the last person stops using it. | |
291 | * This will also work if it is alread in the cache. | |
292 | * The references will go up and then down :-) */ | |
293 | if (s != NULL) | |
294 | { | |
295 | SSL_SESSION_free(s); | |
58964a49 | 296 | ret=0; |
d02b48c6 RE |
297 | } |
298 | else | |
58964a49 RE |
299 | { |
300 | ret=1; | |
301 | ||
302 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) | |
303 | { | |
304 | while (SSL_CTX_sess_number(ctx) > | |
305 | SSL_CTX_sess_get_cache_size(ctx)) | |
306 | { | |
307 | if (!SSL_CTX_remove_session(ctx, | |
308 | ctx->session_cache_tail)) | |
309 | break; | |
310 | else | |
413c4f45 | 311 | ctx->stats.sess_cache_full++; |
58964a49 RE |
312 | } |
313 | } | |
314 | } | |
315 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
316 | return(ret); | |
d02b48c6 RE |
317 | } |
318 | ||
6b691a5c | 319 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
d02b48c6 RE |
320 | { |
321 | SSL_SESSION *r; | |
322 | int ret=0; | |
323 | ||
58964a49 | 324 | if ((c != NULL) && (c->session_id_length != 0)) |
d02b48c6 RE |
325 | { |
326 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
327 | r=(SSL_SESSION *)lh_delete(ctx->sessions,(char *)c); | |
58964a49 RE |
328 | if (r != NULL) |
329 | { | |
330 | ret=1; | |
331 | SSL_SESSION_list_remove(ctx,c); | |
332 | } | |
d02b48c6 RE |
333 | |
334 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
335 | ||
336 | if (ret) | |
337 | { | |
338 | r->not_resumable=1; | |
339 | if (ctx->remove_session_cb != NULL) | |
58964a49 | 340 | ctx->remove_session_cb(ctx,r); |
d02b48c6 RE |
341 | SSL_SESSION_free(r); |
342 | } | |
343 | } | |
344 | else | |
345 | ret=0; | |
346 | return(ret); | |
347 | } | |
348 | ||
6b691a5c | 349 | void SSL_SESSION_free(SSL_SESSION *ss) |
d02b48c6 RE |
350 | { |
351 | int i; | |
352 | ||
e03ddfae BL |
353 | if(ss == NULL) |
354 | return; | |
355 | ||
d02b48c6 | 356 | i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION); |
58964a49 RE |
357 | #ifdef REF_PRINT |
358 | REF_PRINT("SSL_SESSION",ss); | |
359 | #endif | |
d02b48c6 RE |
360 | if (i > 0) return; |
361 | #ifdef REF_CHECK | |
362 | if (i < 0) | |
363 | { | |
364 | fprintf(stderr,"SSL_SESSION_free, bad reference count\n"); | |
365 | abort(); /* ok */ | |
366 | } | |
367 | #endif | |
368 | ||
58964a49 RE |
369 | CRYPTO_free_ex_data(ssl_session_meth,(char *)ss,&ss->ex_data); |
370 | ||
d02b48c6 RE |
371 | memset(ss->key_arg,0,SSL_MAX_KEY_ARG_LENGTH); |
372 | memset(ss->master_key,0,SSL_MAX_MASTER_KEY_LENGTH); | |
373 | memset(ss->session_id,0,SSL_MAX_SSL_SESSION_ID_LENGTH); | |
374 | if (ss->cert != NULL) ssl_cert_free(ss->cert); | |
375 | if (ss->peer != NULL) X509_free(ss->peer); | |
f73e07cf | 376 | if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers); |
d02b48c6 RE |
377 | memset(ss,0,sizeof(*ss)); |
378 | Free(ss); | |
379 | } | |
380 | ||
6b691a5c | 381 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
d02b48c6 RE |
382 | { |
383 | int ret=0; | |
384 | SSL_METHOD *meth; | |
385 | ||
386 | if (session != NULL) | |
387 | { | |
388 | meth=s->ctx->method->get_ssl_method(session->ssl_version); | |
389 | if (meth == NULL) | |
390 | meth=s->method->get_ssl_method(session->ssl_version); | |
391 | if (meth == NULL) | |
392 | { | |
393 | SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD); | |
394 | return(0); | |
395 | } | |
396 | ||
397 | if (meth != s->method) | |
398 | { | |
399 | if (!SSL_set_ssl_method(s,meth)) | |
400 | return(0); | |
413c4f45 MC |
401 | if (s->ctx->session_timeout == 0) |
402 | session->timeout=SSL_get_default_timeout(s); | |
403 | else | |
404 | session->timeout=s->ctx->session_timeout; | |
d02b48c6 RE |
405 | } |
406 | ||
407 | /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/ | |
408 | CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION); | |
409 | if (s->session != NULL) | |
410 | SSL_SESSION_free(s->session); | |
411 | s->session=session; | |
412 | /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/ | |
413 | ret=1; | |
414 | } | |
58964a49 RE |
415 | else |
416 | { | |
417 | if (s->session != NULL) | |
418 | { | |
419 | SSL_SESSION_free(s->session); | |
420 | s->session=NULL; | |
421 | } | |
413c4f45 MC |
422 | |
423 | meth=s->ctx->method; | |
424 | if (meth != s->method) | |
425 | { | |
426 | if (!SSL_set_ssl_method(s,meth)) | |
427 | return(0); | |
428 | } | |
429 | ret=1; | |
58964a49 | 430 | } |
d02b48c6 RE |
431 | return(ret); |
432 | } | |
433 | ||
6b691a5c | 434 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
d02b48c6 RE |
435 | { |
436 | if (s == NULL) return(0); | |
437 | s->timeout=t; | |
438 | return(1); | |
439 | } | |
440 | ||
6b691a5c | 441 | long SSL_SESSION_get_timeout(SSL_SESSION *s) |
d02b48c6 RE |
442 | { |
443 | if (s == NULL) return(0); | |
444 | return(s->timeout); | |
445 | } | |
446 | ||
6b691a5c | 447 | long SSL_SESSION_get_time(SSL_SESSION *s) |
d02b48c6 RE |
448 | { |
449 | if (s == NULL) return(0); | |
450 | return(s->time); | |
451 | } | |
452 | ||
6b691a5c | 453 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
d02b48c6 RE |
454 | { |
455 | if (s == NULL) return(0); | |
456 | s->time=t; | |
457 | return(t); | |
458 | } | |
459 | ||
6b691a5c | 460 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
413c4f45 MC |
461 | { |
462 | long l; | |
463 | if (s == NULL) return(0); | |
464 | l=s->session_timeout; | |
465 | s->session_timeout=t; | |
466 | return(l); | |
467 | } | |
468 | ||
6b691a5c | 469 | long SSL_CTX_get_timeout(SSL_CTX *s) |
413c4f45 MC |
470 | { |
471 | if (s == NULL) return(0); | |
472 | return(s->session_timeout); | |
473 | } | |
474 | ||
d02b48c6 RE |
475 | typedef struct timeout_param_st |
476 | { | |
477 | SSL_CTX *ctx; | |
478 | long time; | |
479 | LHASH *cache; | |
480 | } TIMEOUT_PARAM; | |
481 | ||
6b691a5c | 482 | static void timeout(SSL_SESSION *s, TIMEOUT_PARAM *p) |
d02b48c6 RE |
483 | { |
484 | if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */ | |
485 | { | |
58964a49 RE |
486 | /* The reason we don't call SSL_CTX_remove_session() is to |
487 | * save on locking overhead */ | |
d02b48c6 | 488 | lh_delete(p->cache,(char *)s); |
58964a49 | 489 | SSL_SESSION_list_remove(p->ctx,s); |
d02b48c6 RE |
490 | s->not_resumable=1; |
491 | if (p->ctx->remove_session_cb != NULL) | |
492 | p->ctx->remove_session_cb(p->ctx,s); | |
493 | SSL_SESSION_free(s); | |
494 | } | |
495 | } | |
496 | ||
6b691a5c | 497 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
d02b48c6 RE |
498 | { |
499 | unsigned long i; | |
500 | TIMEOUT_PARAM tp; | |
501 | ||
502 | tp.ctx=s; | |
413c4f45 | 503 | tp.cache=s->sessions; |
d02b48c6 RE |
504 | if (tp.cache == NULL) return; |
505 | tp.time=t; | |
506 | CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); | |
507 | i=tp.cache->down_load; | |
508 | tp.cache->down_load=0; | |
509 | lh_doall_arg(tp.cache,(void (*)())timeout,(char *)&tp); | |
510 | tp.cache->down_load=i; | |
511 | CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); | |
512 | } | |
513 | ||
6b691a5c | 514 | int ssl_clear_bad_session(SSL *s) |
d02b48c6 RE |
515 | { |
516 | if ( (s->session != NULL) && | |
517 | !(s->shutdown & SSL_SENT_SHUTDOWN) && | |
518 | !(SSL_in_init(s) || SSL_in_before(s))) | |
519 | { | |
520 | SSL_CTX_remove_session(s->ctx,s->session); | |
521 | return(1); | |
522 | } | |
523 | else | |
524 | return(0); | |
525 | } | |
58964a49 RE |
526 | |
527 | /* locked by SSL_CTX in the calling function */ | |
6b691a5c | 528 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
58964a49 RE |
529 | { |
530 | if ((s->next == NULL) || (s->prev == NULL)) return; | |
531 | ||
532 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) | |
533 | { /* last element in list */ | |
534 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) | |
535 | { /* only one element in list */ | |
536 | ctx->session_cache_head=NULL; | |
537 | ctx->session_cache_tail=NULL; | |
538 | } | |
539 | else | |
540 | { | |
541 | ctx->session_cache_tail=s->prev; | |
542 | s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail); | |
543 | } | |
544 | } | |
545 | else | |
546 | { | |
547 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) | |
548 | { /* first element in list */ | |
549 | ctx->session_cache_head=s->next; | |
550 | s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head); | |
551 | } | |
552 | else | |
553 | { /* middle of list */ | |
554 | s->next->prev=s->prev; | |
555 | s->prev->next=s->next; | |
556 | } | |
557 | } | |
558 | s->prev=s->next=NULL; | |
559 | } | |
560 | ||
6b691a5c | 561 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
58964a49 RE |
562 | { |
563 | if ((s->next != NULL) && (s->prev != NULL)) | |
564 | SSL_SESSION_list_remove(ctx,s); | |
565 | ||
566 | if (ctx->session_cache_head == NULL) | |
567 | { | |
568 | ctx->session_cache_head=s; | |
569 | ctx->session_cache_tail=s; | |
570 | s->prev=(SSL_SESSION *)&(ctx->session_cache_head); | |
571 | s->next=(SSL_SESSION *)&(ctx->session_cache_tail); | |
572 | } | |
573 | else | |
574 | { | |
575 | s->next=ctx->session_cache_head; | |
576 | s->next->prev=s; | |
577 | s->prev=(SSL_SESSION *)&(ctx->session_cache_head); | |
578 | ctx->session_cache_head=s; | |
579 | } | |
580 | } | |
581 |