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-rw-r--r--src/lib/libssl/ssl_sess.c751
1 files changed, 0 insertions, 751 deletions
diff --git a/src/lib/libssl/ssl_sess.c b/src/lib/libssl/ssl_sess.c
deleted file mode 100644
index 664f8c2230..0000000000
--- a/src/lib/libssl/ssl_sess.c
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@@ -1,751 +0,0 @@
1/* ssl/ssl_sess.c */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60#include <openssl/lhash.h>
61#include <openssl/rand.h>
62#include "ssl_locl.h"
63
64static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
65static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s);
66static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck);
67
68SSL_SESSION *SSL_get_session(SSL *ssl)
69/* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
70 {
71 return(ssl->session);
72 }
73
74SSL_SESSION *SSL_get1_session(SSL *ssl)
75/* variant of SSL_get_session: caller really gets something */
76 {
77 SSL_SESSION *sess;
78 /* Need to lock this all up rather than just use CRYPTO_add so that
79 * somebody doesn't free ssl->session between when we check it's
80 * non-null and when we up the reference count. */
81 CRYPTO_r_lock(CRYPTO_LOCK_SSL_SESSION);
82 sess = ssl->session;
83 if(sess)
84 sess->references++;
85 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_SESSION);
86 return(sess);
87 }
88
89int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
90 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
91 {
92 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp,
93 new_func, dup_func, free_func);
94 }
95
96int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg)
97 {
98 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
99 }
100
101void *SSL_SESSION_get_ex_data(SSL_SESSION *s, int idx)
102 {
103 return(CRYPTO_get_ex_data(&s->ex_data,idx));
104 }
105
106SSL_SESSION *SSL_SESSION_new(void)
107 {
108 SSL_SESSION *ss;
109
110 ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION));
111 if (ss == NULL)
112 {
113 SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE);
114 return(0);
115 }
116 memset(ss,0,sizeof(SSL_SESSION));
117
118 ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */
119 ss->references=1;
120 ss->timeout=60*5+4; /* 5 minute timeout by default */
121 ss->time=time(NULL);
122 ss->prev=NULL;
123 ss->next=NULL;
124 ss->compress_meth=0;
125 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
126 return(ss);
127 }
128
129/* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1
130 * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly
131 * until we have no conflict is going to complete in one iteration pretty much
132 * "most" of the time (btw: understatement). So, if it takes us 10 iterations
133 * and we still can't avoid a conflict - well that's a reasonable point to call
134 * it quits. Either the RAND code is broken or someone is trying to open roughly
135 * very close to 2^128 (or 2^256) SSL sessions to our server. How you might
136 * store that many sessions is perhaps a more interesting question ... */
137
138#define MAX_SESS_ID_ATTEMPTS 10
139static int def_generate_session_id(const SSL *ssl, unsigned char *id,
140 unsigned int *id_len)
141{
142 unsigned int retry = 0;
143 do
144 RAND_pseudo_bytes(id, *id_len);
145 while(SSL_has_matching_session_id(ssl, id, *id_len) &&
146 (++retry < MAX_SESS_ID_ATTEMPTS));
147 if(retry < MAX_SESS_ID_ATTEMPTS)
148 return 1;
149 /* else - woops a session_id match */
150 /* XXX We should also check the external cache --
151 * but the probability of a collision is negligible, and
152 * we could not prevent the concurrent creation of sessions
153 * with identical IDs since we currently don't have means
154 * to atomically check whether a session ID already exists
155 * and make a reservation for it if it does not
156 * (this problem applies to the internal cache as well).
157 */
158 return 0;
159}
160
161int ssl_get_new_session(SSL *s, int session)
162 {
163 /* This gets used by clients and servers. */
164
165 unsigned int tmp;
166 SSL_SESSION *ss=NULL;
167 GEN_SESSION_CB cb = def_generate_session_id;
168
169 if ((ss=SSL_SESSION_new()) == NULL) return(0);
170
171 /* If the context has a default timeout, use it */
172 if (s->ctx->session_timeout == 0)
173 ss->timeout=SSL_get_default_timeout(s);
174 else
175 ss->timeout=s->ctx->session_timeout;
176
177 if (s->session != NULL)
178 {
179 SSL_SESSION_free(s->session);
180 s->session=NULL;
181 }
182
183 if (session)
184 {
185 if (s->version == SSL2_VERSION)
186 {
187 ss->ssl_version=SSL2_VERSION;
188 ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
189 }
190 else if (s->version == SSL3_VERSION)
191 {
192 ss->ssl_version=SSL3_VERSION;
193 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
194 }
195 else if (s->version == TLS1_VERSION)
196 {
197 ss->ssl_version=TLS1_VERSION;
198 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
199 }
200 else
201 {
202 SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION);
203 SSL_SESSION_free(ss);
204 return(0);
205 }
206 /* Choose which callback will set the session ID */
207 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
208 if(s->generate_session_id)
209 cb = s->generate_session_id;
210 else if(s->ctx->generate_session_id)
211 cb = s->ctx->generate_session_id;
212 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
213 /* Choose a session ID */
214 tmp = ss->session_id_length;
215 if(!cb(s, ss->session_id, &tmp))
216 {
217 /* The callback failed */
218 SSLerr(SSL_F_SSL_GET_NEW_SESSION,
219 SSL_R_SSL_SESSION_ID_CALLBACK_FAILED);
220 SSL_SESSION_free(ss);
221 return(0);
222 }
223 /* Don't allow the callback to set the session length to zero.
224 * nor set it higher than it was. */
225 if(!tmp || (tmp > ss->session_id_length))
226 {
227 /* The callback set an illegal length */
228 SSLerr(SSL_F_SSL_GET_NEW_SESSION,
229 SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
230 SSL_SESSION_free(ss);
231 return(0);
232 }
233 /* If the session length was shrunk and we're SSLv2, pad it */
234 if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION))
235 memset(ss->session_id + tmp, 0, ss->session_id_length - tmp);
236 else
237 ss->session_id_length = tmp;
238 /* Finally, check for a conflict */
239 if(SSL_has_matching_session_id(s, ss->session_id,
240 ss->session_id_length))
241 {
242 SSLerr(SSL_F_SSL_GET_NEW_SESSION,
243 SSL_R_SSL_SESSION_ID_CONFLICT);
244 SSL_SESSION_free(ss);
245 return(0);
246 }
247 }
248 else
249 {
250 ss->session_id_length=0;
251 }
252
253 if (s->sid_ctx_length > sizeof ss->sid_ctx)
254 {
255 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
256 SSL_SESSION_free(ss);
257 return 0;
258 }
259 memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length);
260 ss->sid_ctx_length=s->sid_ctx_length;
261 s->session=ss;
262 ss->ssl_version=s->version;
263 ss->verify_result = X509_V_OK;
264
265 return(1);
266 }
267
268int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len)
269 {
270 /* This is used only by servers. */
271
272 SSL_SESSION *ret=NULL,data;
273 int fatal = 0;
274
275 data.ssl_version=s->version;
276 data.session_id_length=len;
277 if (len > SSL_MAX_SSL_SESSION_ID_LENGTH)
278 goto err;
279 memcpy(data.session_id,session_id,len);
280
281 if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
282 {
283 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
284 ret=(SSL_SESSION *)lh_retrieve(s->ctx->sessions,&data);
285 if (ret != NULL)
286 /* don't allow other threads to steal it: */
287 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
288 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
289 }
290
291 if (ret == NULL)
292 {
293 int copy=1;
294
295 s->ctx->stats.sess_miss++;
296 ret=NULL;
297 if (s->ctx->get_session_cb != NULL
298 && (ret=s->ctx->get_session_cb(s,session_id,len,&copy))
299 != NULL)
300 {
301 s->ctx->stats.sess_cb_hit++;
302
303 /* Increment reference count now if the session callback
304 * asks us to do so (note that if the session structures
305 * returned by the callback are shared between threads,
306 * it must handle the reference count itself [i.e. copy == 0],
307 * or things won't be thread-safe). */
308 if (copy)
309 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
310
311 /* The following should not return 1, otherwise,
312 * things are very strange */
313 SSL_CTX_add_session(s->ctx,ret);
314 }
315 if (ret == NULL)
316 goto err;
317 }
318
319 /* Now ret is non-NULL, and we own one of its reference counts. */
320
321 if((s->verify_mode&SSL_VERIFY_PEER)
322 && (!s->sid_ctx_length || ret->sid_ctx_length != s->sid_ctx_length
323 || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length)))
324 {
325 /* We've found the session named by the client, but we don't
326 * want to use it in this context. */
327
328 if (s->sid_ctx_length == 0)
329 {
330 /* application should have used SSL[_CTX]_set_session_id_context
331 * -- we could tolerate this and just pretend we never heard
332 * of this session, but then applications could effectively
333 * disable the session cache by accident without anyone noticing */
334
335 SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
336 fatal = 1;
337 goto err;
338 }
339 else
340 {
341#if 0 /* The client cannot always know when a session is not appropriate,
342 * so we shouldn't generate an error message. */
343
344 SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
345#endif
346 goto err; /* treat like cache miss */
347 }
348 }
349
350 if (ret->cipher == NULL)
351 {
352 unsigned char buf[5],*p;
353 unsigned long l;
354
355 p=buf;
356 l=ret->cipher_id;
357 l2n(l,p);
358 if ((ret->ssl_version>>8) == SSL3_VERSION_MAJOR)
359 ret->cipher=ssl_get_cipher_by_char(s,&(buf[2]));
360 else
361 ret->cipher=ssl_get_cipher_by_char(s,&(buf[1]));
362 if (ret->cipher == NULL)
363 goto err;
364 }
365
366
367#if 0 /* This is way too late. */
368
369 /* If a thread got the session, then 'swaped', and another got
370 * it and then due to a time-out decided to 'OPENSSL_free' it we could
371 * be in trouble. So I'll increment it now, then double decrement
372 * later - am I speaking rubbish?. */
373 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
374#endif
375
376 if ((long)(ret->time+ret->timeout) < (long)time(NULL)) /* timeout */
377 {
378 s->ctx->stats.sess_timeout++;
379 /* remove it from the cache */
380 SSL_CTX_remove_session(s->ctx,ret);
381 goto err;
382 }
383
384 s->ctx->stats.sess_hit++;
385
386 /* ret->time=time(NULL); */ /* rezero timeout? */
387 /* again, just leave the session
388 * if it is the same session, we have just incremented and
389 * then decremented the reference count :-) */
390 if (s->session != NULL)
391 SSL_SESSION_free(s->session);
392 s->session=ret;
393 s->verify_result = s->session->verify_result;
394 return(1);
395
396 err:
397 if (ret != NULL)
398 SSL_SESSION_free(ret);
399 if (fatal)
400 return -1;
401 else
402 return 0;
403 }
404
405int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
406 {
407 int ret=0;
408 SSL_SESSION *s;
409
410 /* add just 1 reference count for the SSL_CTX's session cache
411 * even though it has two ways of access: each session is in a
412 * doubly linked list and an lhash */
413 CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION);
414 /* if session c is in already in cache, we take back the increment later */
415
416 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
417 s=(SSL_SESSION *)lh_insert(ctx->sessions,c);
418
419 /* s != NULL iff we already had a session with the given PID.
420 * In this case, s == c should hold (then we did not really modify
421 * ctx->sessions), or we're in trouble. */
422 if (s != NULL && s != c)
423 {
424 /* We *are* in trouble ... */
425 SSL_SESSION_list_remove(ctx,s);
426 SSL_SESSION_free(s);
427 /* ... so pretend the other session did not exist in cache
428 * (we cannot handle two SSL_SESSION structures with identical
429 * session ID in the same cache, which could happen e.g. when
430 * two threads concurrently obtain the same session from an external
431 * cache) */
432 s = NULL;
433 }
434
435 /* Put at the head of the queue unless it is already in the cache */
436 if (s == NULL)
437 SSL_SESSION_list_add(ctx,c);
438
439 if (s != NULL)
440 {
441 /* existing cache entry -- decrement previously incremented reference
442 * count because it already takes into account the cache */
443
444 SSL_SESSION_free(s); /* s == c */
445 ret=0;
446 }
447 else
448 {
449 /* new cache entry -- remove old ones if cache has become too large */
450
451 ret=1;
452
453 if (SSL_CTX_sess_get_cache_size(ctx) > 0)
454 {
455 while (SSL_CTX_sess_number(ctx) >
456 SSL_CTX_sess_get_cache_size(ctx))
457 {
458 if (!remove_session_lock(ctx,
459 ctx->session_cache_tail, 0))
460 break;
461 else
462 ctx->stats.sess_cache_full++;
463 }
464 }
465 }
466 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
467 return(ret);
468 }
469
470int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c)
471{
472 return remove_session_lock(ctx, c, 1);
473}
474
475static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck)
476 {
477 SSL_SESSION *r;
478 int ret=0;
479
480 if ((c != NULL) && (c->session_id_length != 0))
481 {
482 if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
483 if ((r = (SSL_SESSION *)lh_retrieve(ctx->sessions,c)) == c)
484 {
485 ret=1;
486 r=(SSL_SESSION *)lh_delete(ctx->sessions,c);
487 SSL_SESSION_list_remove(ctx,c);
488 }
489
490 if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
491
492 if (ret)
493 {
494 r->not_resumable=1;
495 if (ctx->remove_session_cb != NULL)
496 ctx->remove_session_cb(ctx,r);
497 SSL_SESSION_free(r);
498 }
499 }
500 else
501 ret=0;
502 return(ret);
503 }
504
505void SSL_SESSION_free(SSL_SESSION *ss)
506 {
507 int i;
508
509 if(ss == NULL)
510 return;
511
512 i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION);
513#ifdef REF_PRINT
514 REF_PRINT("SSL_SESSION",ss);
515#endif
516 if (i > 0) return;
517#ifdef REF_CHECK
518 if (i < 0)
519 {
520 fprintf(stderr,"SSL_SESSION_free, bad reference count\n");
521 abort(); /* ok */
522 }
523#endif
524
525 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
526
527 memset(ss->key_arg,0,SSL_MAX_KEY_ARG_LENGTH);
528 memset(ss->master_key,0,SSL_MAX_MASTER_KEY_LENGTH);
529 memset(ss->session_id,0,SSL_MAX_SSL_SESSION_ID_LENGTH);
530 if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert);
531 if (ss->peer != NULL) X509_free(ss->peer);
532 if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers);
533 memset(ss,0,sizeof(*ss));
534 OPENSSL_free(ss);
535 }
536
537int SSL_set_session(SSL *s, SSL_SESSION *session)
538 {
539 int ret=0;
540 SSL_METHOD *meth;
541
542 if (session != NULL)
543 {
544 meth=s->ctx->method->get_ssl_method(session->ssl_version);
545 if (meth == NULL)
546 meth=s->method->get_ssl_method(session->ssl_version);
547 if (meth == NULL)
548 {
549 SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD);
550 return(0);
551 }
552
553 if (meth != s->method)
554 {
555 if (!SSL_set_ssl_method(s,meth))
556 return(0);
557 if (s->ctx->session_timeout == 0)
558 session->timeout=SSL_get_default_timeout(s);
559 else
560 session->timeout=s->ctx->session_timeout;
561 }
562
563#ifndef OPENSSL_NO_KRB5
564 if (s->kssl_ctx && !s->kssl_ctx->client_princ &&
565 session->krb5_client_princ_len > 0)
566 {
567 s->kssl_ctx->client_princ = (char *)malloc(session->krb5_client_princ_len + 1);
568 memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ,
569 session->krb5_client_princ_len);
570 s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0';
571 }
572#endif /* OPENSSL_NO_KRB5 */
573
574 /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/
575 CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION);
576 if (s->session != NULL)
577 SSL_SESSION_free(s->session);
578 s->session=session;
579 s->verify_result = s->session->verify_result;
580 /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/
581 ret=1;
582 }
583 else
584 {
585 if (s->session != NULL)
586 {
587 SSL_SESSION_free(s->session);
588 s->session=NULL;
589 }
590
591 meth=s->ctx->method;
592 if (meth != s->method)
593 {
594 if (!SSL_set_ssl_method(s,meth))
595 return(0);
596 }
597 ret=1;
598 }
599 return(ret);
600 }
601
602long SSL_SESSION_set_timeout(SSL_SESSION *s, long t)
603 {
604 if (s == NULL) return(0);
605 s->timeout=t;
606 return(1);
607 }
608
609long SSL_SESSION_get_timeout(SSL_SESSION *s)
610 {
611 if (s == NULL) return(0);
612 return(s->timeout);
613 }
614
615long SSL_SESSION_get_time(SSL_SESSION *s)
616 {
617 if (s == NULL) return(0);
618 return(s->time);
619 }
620
621long SSL_SESSION_set_time(SSL_SESSION *s, long t)
622 {
623 if (s == NULL) return(0);
624 s->time=t;
625 return(t);
626 }
627
628long SSL_CTX_set_timeout(SSL_CTX *s, long t)
629 {
630 long l;
631 if (s == NULL) return(0);
632 l=s->session_timeout;
633 s->session_timeout=t;
634 return(l);
635 }
636
637long SSL_CTX_get_timeout(SSL_CTX *s)
638 {
639 if (s == NULL) return(0);
640 return(s->session_timeout);
641 }
642
643typedef struct timeout_param_st
644 {
645 SSL_CTX *ctx;
646 long time;
647 LHASH *cache;
648 } TIMEOUT_PARAM;
649
650static void timeout(SSL_SESSION *s, TIMEOUT_PARAM *p)
651 {
652 if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */
653 {
654 /* The reason we don't call SSL_CTX_remove_session() is to
655 * save on locking overhead */
656 lh_delete(p->cache,s);
657 SSL_SESSION_list_remove(p->ctx,s);
658 s->not_resumable=1;
659 if (p->ctx->remove_session_cb != NULL)
660 p->ctx->remove_session_cb(p->ctx,s);
661 SSL_SESSION_free(s);
662 }
663 }
664
665static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION *, TIMEOUT_PARAM *)
666
667void SSL_CTX_flush_sessions(SSL_CTX *s, long t)
668 {
669 unsigned long i;
670 TIMEOUT_PARAM tp;
671
672 tp.ctx=s;
673 tp.cache=s->sessions;
674 if (tp.cache == NULL) return;
675 tp.time=t;
676 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
677 i=tp.cache->down_load;
678 tp.cache->down_load=0;
679 lh_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout), &tp);
680 tp.cache->down_load=i;
681 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
682 }
683
684int ssl_clear_bad_session(SSL *s)
685 {
686 if ( (s->session != NULL) &&
687 !(s->shutdown & SSL_SENT_SHUTDOWN) &&
688 !(SSL_in_init(s) || SSL_in_before(s)))
689 {
690 SSL_CTX_remove_session(s->ctx,s->session);
691 return(1);
692 }
693 else
694 return(0);
695 }
696
697/* locked by SSL_CTX in the calling function */
698static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s)
699 {
700 if ((s->next == NULL) || (s->prev == NULL)) return;
701
702 if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail))
703 { /* last element in list */
704 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
705 { /* only one element in list */
706 ctx->session_cache_head=NULL;
707 ctx->session_cache_tail=NULL;
708 }
709 else
710 {
711 ctx->session_cache_tail=s->prev;
712 s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail);
713 }
714 }
715 else
716 {
717 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
718 { /* first element in list */
719 ctx->session_cache_head=s->next;
720 s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head);
721 }
722 else
723 { /* middle of list */
724 s->next->prev=s->prev;
725 s->prev->next=s->next;
726 }
727 }
728 s->prev=s->next=NULL;
729 }
730
731static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s)
732 {
733 if ((s->next != NULL) && (s->prev != NULL))
734 SSL_SESSION_list_remove(ctx,s);
735
736 if (ctx->session_cache_head == NULL)
737 {
738 ctx->session_cache_head=s;
739 ctx->session_cache_tail=s;
740 s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
741 s->next=(SSL_SESSION *)&(ctx->session_cache_tail);
742 }
743 else
744 {
745 s->next=ctx->session_cache_head;
746 s->next->prev=s;
747 s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
748 ctx->session_cache_head=s;
749 }
750 }
751
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-03-22 09:50:25 +0000