2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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.
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).
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.
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
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)"
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
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.]
58 /* ====================================================================
59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
87 * 6. Redistributions of any form whatsoever must retain the following
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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 * ====================================================================
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).
111 /* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
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.
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.
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.
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
139 #include <openssl/lhash.h>
140 #include <openssl/rand.h>
141 #include "ssl_locl.h"
143 static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
144 static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s);
145 static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck);
147 SSL_SESSION *SSL_get_session(const SSL *ssl)
148 /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
150 return(ssl->session);
153 SSL_SESSION *SSL_get1_session(SSL *ssl)
154 /* variant of SSL_get_session: caller really gets something */
157 /* Need to lock this all up rather than just use CRYPTO_add so that
158 * somebody doesn't free ssl->session between when we check it's
159 * non-null and when we up the reference count. */
160 CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION);
164 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION);
168 int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
169 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
171 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp,
172 new_func, dup_func, free_func);
175 int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg)
177 return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
180 void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx)
182 return(CRYPTO_get_ex_data(&s->ex_data,idx));
185 SSL_SESSION *SSL_SESSION_new(void)
189 ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION));
192 SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE);
195 memset(ss,0,sizeof(SSL_SESSION));
197 ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */
199 ss->timeout=60*5+4; /* 5 minute timeout by default */
200 ss->time=(unsigned long)time(NULL);
204 #ifndef OPENSSL_NO_TLSEXT
205 ss->tlsext_hostname = NULL;
206 #ifndef OPENSSL_NO_EC
207 ss->tlsext_ecpointformatlist_length = 0;
208 ss->tlsext_ecpointformatlist = NULL;
209 ss->tlsext_ellipticcurvelist_length = 0;
210 ss->tlsext_ellipticcurvelist = NULL;
213 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
214 #ifndef OPENSSL_NO_PSK
215 ss->psk_identity_hint=NULL;
216 ss->psk_identity=NULL;
221 const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len)
224 *len = s->session_id_length;
225 return s->session_id;
228 /* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1
229 * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly
230 * until we have no conflict is going to complete in one iteration pretty much
231 * "most" of the time (btw: understatement). So, if it takes us 10 iterations
232 * and we still can't avoid a conflict - well that's a reasonable point to call
233 * it quits. Either the RAND code is broken or someone is trying to open roughly
234 * very close to 2^128 (or 2^256) SSL sessions to our server. How you might
235 * store that many sessions is perhaps a more interesting question ... */
237 #define MAX_SESS_ID_ATTEMPTS 10
238 static int def_generate_session_id(const SSL *ssl, unsigned char *id,
239 unsigned int *id_len)
241 unsigned int retry = 0;
243 if (RAND_pseudo_bytes(id, *id_len) <= 0)
245 while(SSL_has_matching_session_id(ssl, id, *id_len) &&
246 (++retry < MAX_SESS_ID_ATTEMPTS));
247 if(retry < MAX_SESS_ID_ATTEMPTS)
249 /* else - woops a session_id match */
250 /* XXX We should also check the external cache --
251 * but the probability of a collision is negligible, and
252 * we could not prevent the concurrent creation of sessions
253 * with identical IDs since we currently don't have means
254 * to atomically check whether a session ID already exists
255 * and make a reservation for it if it does not
256 * (this problem applies to the internal cache as well).
261 int ssl_get_new_session(SSL *s, int session)
263 /* This gets used by clients and servers. */
266 SSL_SESSION *ss=NULL;
267 GEN_SESSION_CB cb = def_generate_session_id;
269 if ((ss=SSL_SESSION_new()) == NULL) return(0);
271 /* If the context has a default timeout, use it */
272 if (s->session_ctx->session_timeout == 0)
273 ss->timeout=SSL_get_default_timeout(s);
275 ss->timeout=s->session_ctx->session_timeout;
277 if (s->session != NULL)
279 SSL_SESSION_free(s->session);
285 if (s->version == SSL2_VERSION)
287 ss->ssl_version=SSL2_VERSION;
288 ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
290 else if (s->version == SSL3_VERSION)
292 ss->ssl_version=SSL3_VERSION;
293 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
295 else if (s->version == TLS1_VERSION)
297 ss->ssl_version=TLS1_VERSION;
298 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
300 else if (s->version == DTLS1_VERSION)
302 ss->ssl_version=DTLS1_VERSION;
303 ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
307 SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION);
308 SSL_SESSION_free(ss);
311 #ifndef OPENSSL_NO_TLSEXT
312 /* If RFC4507 ticket use empty session ID */
313 if (s->tlsext_ticket_expected)
315 ss->session_id_length = 0;
319 /* Choose which callback will set the session ID */
320 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
321 if(s->generate_session_id)
322 cb = s->generate_session_id;
323 else if(s->session_ctx->generate_session_id)
324 cb = s->session_ctx->generate_session_id;
325 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
326 /* Choose a session ID */
327 tmp = ss->session_id_length;
328 if(!cb(s, ss->session_id, &tmp))
330 /* The callback failed */
331 SSLerr(SSL_F_SSL_GET_NEW_SESSION,
332 SSL_R_SSL_SESSION_ID_CALLBACK_FAILED);
333 SSL_SESSION_free(ss);
336 /* Don't allow the callback to set the session length to zero.
337 * nor set it higher than it was. */
338 if(!tmp || (tmp > ss->session_id_length))
340 /* The callback set an illegal length */
341 SSLerr(SSL_F_SSL_GET_NEW_SESSION,
342 SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
343 SSL_SESSION_free(ss);
346 /* If the session length was shrunk and we're SSLv2, pad it */
347 if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION))
348 memset(ss->session_id + tmp, 0, ss->session_id_length - tmp);
350 ss->session_id_length = tmp;
351 /* Finally, check for a conflict */
352 if(SSL_has_matching_session_id(s, ss->session_id,
353 ss->session_id_length))
355 SSLerr(SSL_F_SSL_GET_NEW_SESSION,
356 SSL_R_SSL_SESSION_ID_CONFLICT);
357 SSL_SESSION_free(ss);
360 #ifndef OPENSSL_NO_TLSEXT
362 if (s->tlsext_hostname) {
363 ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname);
364 if (ss->tlsext_hostname == NULL) {
365 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
366 SSL_SESSION_free(ss);
370 #ifndef OPENSSL_NO_EC
371 if (s->tlsext_ecpointformatlist)
373 if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist);
374 if ((ss->tlsext_ecpointformatlist = OPENSSL_malloc(s->tlsext_ecpointformatlist_length)) == NULL)
376 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
377 SSL_SESSION_free(ss);
380 ss->tlsext_ecpointformatlist_length = s->tlsext_ecpointformatlist_length;
381 memcpy(ss->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length);
383 if (s->tlsext_ellipticcurvelist)
385 if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist);
386 if ((ss->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL)
388 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
389 SSL_SESSION_free(ss);
392 ss->tlsext_ellipticcurvelist_length = s->tlsext_ellipticcurvelist_length;
393 memcpy(ss->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist_length);
400 ss->session_id_length=0;
403 if (s->sid_ctx_length > sizeof ss->sid_ctx)
405 SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
406 SSL_SESSION_free(ss);
409 memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length);
410 ss->sid_ctx_length=s->sid_ctx_length;
412 ss->ssl_version=s->version;
413 ss->verify_result = X509_V_OK;
418 int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len,
419 const unsigned char *limit)
421 /* This is used only by servers. */
423 SSL_SESSION *ret=NULL;
425 #ifndef OPENSSL_NO_TLSEXT
429 if (len > SSL_MAX_SSL_SESSION_ID_LENGTH)
431 #ifndef OPENSSL_NO_TLSEXT
432 r = tls1_process_ticket(s, session_id, len, limit, &ret);
438 else if (r == 0 || (!ret || !len))
440 else if (!ret && !(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
444 if (!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
448 data.ssl_version=s->version;
449 data.session_id_length=len;
452 memcpy(data.session_id,session_id,len);
453 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
454 ret=lh_SSL_SESSION_retrieve(s->session_ctx->sessions,&data);
456 /* don't allow other threads to steal it: */
457 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
458 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
465 s->session_ctx->stats.sess_miss++;
467 if (s->session_ctx->get_session_cb != NULL
468 && (ret=s->session_ctx->get_session_cb(s,session_id,len,©))
471 s->session_ctx->stats.sess_cb_hit++;
473 /* Increment reference count now if the session callback
474 * asks us to do so (note that if the session structures
475 * returned by the callback are shared between threads,
476 * it must handle the reference count itself [i.e. copy == 0],
477 * or things won't be thread-safe). */
479 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
481 /* Add the externally cached session to the internal
482 * cache as well if and only if we are supposed to. */
483 if(!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE))
484 /* The following should not return 1, otherwise,
485 * things are very strange */
486 SSL_CTX_add_session(s->session_ctx,ret);
492 /* Now ret is non-NULL, and we own one of its reference counts. */
494 if (ret->sid_ctx_length != s->sid_ctx_length
495 || memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length))
497 /* We've found the session named by the client, but we don't
498 * want to use it in this context. */
500 #if 0 /* The client cannot always know when a session is not appropriate,
501 * so we shouldn't generate an error message. */
503 SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT);
505 goto err; /* treat like cache miss */
508 if((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0)
510 /* We can't be sure if this session is being used out of
511 * context, which is especially important for SSL_VERIFY_PEER.
512 * The application should have used SSL[_CTX]_set_session_id_context.
514 * For this error case, we generate an error instead of treating
515 * the event like a cache miss (otherwise it would be easy for
516 * applications to effectively disable the session cache by
517 * accident without anyone noticing).
520 SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
525 if (ret->cipher == NULL)
527 unsigned char buf[5],*p;
533 if ((ret->ssl_version>>8) == SSL3_VERSION_MAJOR)
534 ret->cipher=ssl_get_cipher_by_char(s,&(buf[2]));
536 ret->cipher=ssl_get_cipher_by_char(s,&(buf[1]));
537 if (ret->cipher == NULL)
542 #if 0 /* This is way too late. */
544 /* If a thread got the session, then 'swaped', and another got
545 * it and then due to a time-out decided to 'OPENSSL_free' it we could
546 * be in trouble. So I'll increment it now, then double decrement
547 * later - am I speaking rubbish?. */
548 CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
551 if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */
553 s->session_ctx->stats.sess_timeout++;
554 /* remove it from the cache */
555 SSL_CTX_remove_session(s->session_ctx,ret);
559 s->session_ctx->stats.sess_hit++;
561 /* ret->time=time(NULL); */ /* rezero timeout? */
562 /* again, just leave the session
563 * if it is the same session, we have just incremented and
564 * then decremented the reference count :-) */
565 if (s->session != NULL)
566 SSL_SESSION_free(s->session);
568 s->verify_result = s->session->verify_result;
573 SSL_SESSION_free(ret);
580 int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
585 /* add just 1 reference count for the SSL_CTX's session cache
586 * even though it has two ways of access: each session is in a
587 * doubly linked list and an lhash */
588 CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION);
589 /* if session c is in already in cache, we take back the increment later */
591 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
592 s=lh_SSL_SESSION_insert(ctx->sessions,c);
594 /* s != NULL iff we already had a session with the given PID.
595 * In this case, s == c should hold (then we did not really modify
596 * ctx->sessions), or we're in trouble. */
597 if (s != NULL && s != c)
599 /* We *are* in trouble ... */
600 SSL_SESSION_list_remove(ctx,s);
602 /* ... so pretend the other session did not exist in cache
603 * (we cannot handle two SSL_SESSION structures with identical
604 * session ID in the same cache, which could happen e.g. when
605 * two threads concurrently obtain the same session from an external
610 /* Put at the head of the queue unless it is already in the cache */
612 SSL_SESSION_list_add(ctx,c);
616 /* existing cache entry -- decrement previously incremented reference
617 * count because it already takes into account the cache */
619 SSL_SESSION_free(s); /* s == c */
624 /* new cache entry -- remove old ones if cache has become too large */
628 if (SSL_CTX_sess_get_cache_size(ctx) > 0)
630 while (SSL_CTX_sess_number(ctx) >
631 SSL_CTX_sess_get_cache_size(ctx))
633 if (!remove_session_lock(ctx,
634 ctx->session_cache_tail, 0))
637 ctx->stats.sess_cache_full++;
641 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
645 int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c)
647 return remove_session_lock(ctx, c, 1);
650 static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck)
655 if ((c != NULL) && (c->session_id_length != 0))
657 if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
658 if ((r = lh_SSL_SESSION_retrieve(ctx->sessions,c)) == c)
661 r=lh_SSL_SESSION_delete(ctx->sessions,c);
662 SSL_SESSION_list_remove(ctx,c);
665 if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
670 if (ctx->remove_session_cb != NULL)
671 ctx->remove_session_cb(ctx,r);
680 void SSL_SESSION_free(SSL_SESSION *ss)
687 i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION);
689 REF_PRINT("SSL_SESSION",ss);
695 fprintf(stderr,"SSL_SESSION_free, bad reference count\n");
700 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
702 OPENSSL_cleanse(ss->key_arg,sizeof ss->key_arg);
703 OPENSSL_cleanse(ss->master_key,sizeof ss->master_key);
704 OPENSSL_cleanse(ss->session_id,sizeof ss->session_id);
705 if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert);
706 if (ss->peer != NULL) X509_free(ss->peer);
707 if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers);
708 #ifndef OPENSSL_NO_TLSEXT
709 if (ss->tlsext_hostname != NULL) OPENSSL_free(ss->tlsext_hostname);
710 if (ss->tlsext_tick != NULL) OPENSSL_free(ss->tlsext_tick);
711 #ifndef OPENSSL_NO_EC
712 ss->tlsext_ecpointformatlist_length = 0;
713 if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist);
714 ss->tlsext_ellipticcurvelist_length = 0;
715 if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist);
716 #endif /* OPENSSL_NO_EC */
718 #ifndef OPENSSL_NO_PSK
719 if (ss->psk_identity_hint != NULL)
720 OPENSSL_free(ss->psk_identity_hint);
721 if (ss->psk_identity != NULL)
722 OPENSSL_free(ss->psk_identity);
724 OPENSSL_cleanse(ss,sizeof(*ss));
728 int SSL_set_session(SSL *s, SSL_SESSION *session)
731 const SSL_METHOD *meth;
735 meth=s->ctx->method->get_ssl_method(session->ssl_version);
737 meth=s->method->get_ssl_method(session->ssl_version);
740 SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD);
744 if (meth != s->method)
746 if (!SSL_set_ssl_method(s,meth))
748 if (s->ctx->session_timeout == 0)
749 session->timeout=SSL_get_default_timeout(s);
751 session->timeout=s->ctx->session_timeout;
754 #ifndef OPENSSL_NO_KRB5
755 if (s->kssl_ctx && !s->kssl_ctx->client_princ &&
756 session->krb5_client_princ_len > 0)
758 s->kssl_ctx->client_princ = (char *)OPENSSL_malloc(session->krb5_client_princ_len + 1);
759 memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ,
760 session->krb5_client_princ_len);
761 s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0';
763 #endif /* OPENSSL_NO_KRB5 */
765 /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/
766 CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION);
767 if (s->session != NULL)
768 SSL_SESSION_free(s->session);
770 s->verify_result = s->session->verify_result;
771 /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/
776 if (s->session != NULL)
778 SSL_SESSION_free(s->session);
783 if (meth != s->method)
785 if (!SSL_set_ssl_method(s,meth))
793 long SSL_SESSION_set_timeout(SSL_SESSION *s, long t)
795 if (s == NULL) return(0);
800 long SSL_SESSION_get_timeout(const SSL_SESSION *s)
802 if (s == NULL) return(0);
806 long SSL_SESSION_get_time(const SSL_SESSION *s)
808 if (s == NULL) return(0);
812 long SSL_SESSION_set_time(SSL_SESSION *s, long t)
814 if (s == NULL) return(0);
819 long SSL_CTX_set_timeout(SSL_CTX *s, long t)
822 if (s == NULL) return(0);
823 l=s->session_timeout;
824 s->session_timeout=t;
828 long SSL_CTX_get_timeout(const SSL_CTX *s)
830 if (s == NULL) return(0);
831 return(s->session_timeout);
834 typedef struct timeout_param_st
838 LHASH_OF(SSL_SESSION) *cache;
841 static void timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p)
843 if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */
845 /* The reason we don't call SSL_CTX_remove_session() is to
846 * save on locking overhead */
847 lh_SSL_SESSION_delete(p->cache,s);
848 SSL_SESSION_list_remove(p->ctx,s);
850 if (p->ctx->remove_session_cb != NULL)
851 p->ctx->remove_session_cb(p->ctx,s);
856 static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION, TIMEOUT_PARAM)
858 void SSL_CTX_flush_sessions(SSL_CTX *s, long t)
864 tp.cache=s->sessions;
865 if (tp.cache == NULL) return;
867 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
868 i=CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load;
869 CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=0;
870 lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout),
872 CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=i;
873 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
876 int ssl_clear_bad_session(SSL *s)
878 if ( (s->session != NULL) &&
879 !(s->shutdown & SSL_SENT_SHUTDOWN) &&
880 !(SSL_in_init(s) || SSL_in_before(s)))
882 SSL_CTX_remove_session(s->ctx,s->session);
889 /* locked by SSL_CTX in the calling function */
890 static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s)
892 if ((s->next == NULL) || (s->prev == NULL)) return;
894 if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail))
895 { /* last element in list */
896 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
897 { /* only one element in list */
898 ctx->session_cache_head=NULL;
899 ctx->session_cache_tail=NULL;
903 ctx->session_cache_tail=s->prev;
904 s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail);
909 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
910 { /* first element in list */
911 ctx->session_cache_head=s->next;
912 s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head);
915 { /* middle of list */
916 s->next->prev=s->prev;
917 s->prev->next=s->next;
920 s->prev=s->next=NULL;
923 static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s)
925 if ((s->next != NULL) && (s->prev != NULL))
926 SSL_SESSION_list_remove(ctx,s);
928 if (ctx->session_cache_head == NULL)
930 ctx->session_cache_head=s;
931 ctx->session_cache_tail=s;
932 s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
933 s->next=(SSL_SESSION *)&(ctx->session_cache_tail);
937 s->next=ctx->session_cache_head;
939 s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
940 ctx->session_cache_head=s;
944 void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
945 int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess))
947 ctx->new_session_cb=cb;
950 int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess)
952 return ctx->new_session_cb;
955 void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
956 void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess))
958 ctx->remove_session_cb=cb;
961 void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess)
963 return ctx->remove_session_cb;
966 void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
967 SSL_SESSION *(*cb)(struct ssl_st *ssl,
968 unsigned char *data,int len,int *copy))
970 ctx->get_session_cb=cb;
973 SSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl,
974 unsigned char *data,int len,int *copy)
976 return ctx->get_session_cb;
979 void SSL_CTX_set_info_callback(SSL_CTX *ctx,
980 void (*cb)(const SSL *ssl,int type,int val))
982 ctx->info_callback=cb;
985 void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val)
987 return ctx->info_callback;
990 void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
991 int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey))
993 ctx->client_cert_cb=cb;
996 int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey)
998 return ctx->client_cert_cb;
1001 void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
1002 int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len))
1004 ctx->app_gen_cookie_cb=cb;
1007 void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
1008 int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len))
1010 ctx->app_verify_cookie_cb=cb;
1013 IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)