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.]
60 #include <openssl/lhash.h>
61 #include <openssl/rand.h>
62 #ifndef OPENSSL_NO_ENGINE
63 #include <openssl/engine.h>
67 static void SSL_SESSION_list_remove(SSL_CTX
*ctx
, SSL_SESSION
*s
);
68 static void SSL_SESSION_list_add(SSL_CTX
*ctx
,SSL_SESSION
*s
);
69 static int remove_session_lock(SSL_CTX
*ctx
, SSL_SESSION
*c
, int lck
);
71 SSL_SESSION
*SSL_get_session(const SSL
*ssl
)
72 /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
77 SSL_SESSION
*SSL_get1_session(SSL
*ssl
)
78 /* variant of SSL_get_session: caller really gets something */
81 /* Need to lock this all up rather than just use CRYPTO_add so that
82 * somebody doesn't free ssl->session between when we check it's
83 * non-null and when we up the reference count. */
84 CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION
);
88 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION
);
92 int SSL_SESSION_get_ex_new_index(long argl
, void *argp
, CRYPTO_EX_new
*new_func
,
93 CRYPTO_EX_dup
*dup_func
, CRYPTO_EX_free
*free_func
)
95 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION
, argl
, argp
,
96 new_func
, dup_func
, free_func
);
99 int SSL_SESSION_set_ex_data(SSL_SESSION
*s
, int idx
, void *arg
)
101 return(CRYPTO_set_ex_data(&s
->ex_data
,idx
,arg
));
104 void *SSL_SESSION_get_ex_data(const SSL_SESSION
*s
, int idx
)
106 return(CRYPTO_get_ex_data(&s
->ex_data
,idx
));
109 SSL_SESSION
*SSL_SESSION_new(void)
113 ss
=(SSL_SESSION
*)OPENSSL_malloc(sizeof(SSL_SESSION
));
116 SSLerr(SSL_F_SSL_SESSION_NEW
,ERR_R_MALLOC_FAILURE
);
119 memset(ss
,0,sizeof(SSL_SESSION
));
121 ss
->verify_result
= 1; /* avoid 0 (= X509_V_OK) just in case */
123 ss
->timeout
=60*5+4; /* 5 minute timeout by default */
124 ss
->time
=(unsigned long)time(NULL
);
128 #ifndef OPENSSL_NO_TLSEXT
129 ss
->tlsext_hostname
= NULL
;
131 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION
, ss
, &ss
->ex_data
);
135 const unsigned char *SSL_SESSION_get_id(const SSL_SESSION
*s
, unsigned int *len
)
138 *len
= s
->session_id_length
;
139 return s
->session_id
;
142 /* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1
143 * has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly
144 * until we have no conflict is going to complete in one iteration pretty much
145 * "most" of the time (btw: understatement). So, if it takes us 10 iterations
146 * and we still can't avoid a conflict - well that's a reasonable point to call
147 * it quits. Either the RAND code is broken or someone is trying to open roughly
148 * very close to 2^128 (or 2^256) SSL sessions to our server. How you might
149 * store that many sessions is perhaps a more interesting question ... */
151 #define MAX_SESS_ID_ATTEMPTS 10
152 static int def_generate_session_id(const SSL
*ssl
, unsigned char *id
,
153 unsigned int *id_len
)
155 unsigned int retry
= 0;
157 if (RAND_pseudo_bytes(id
, *id_len
) <= 0)
159 while(SSL_has_matching_session_id(ssl
, id
, *id_len
) &&
160 (++retry
< MAX_SESS_ID_ATTEMPTS
));
161 if(retry
< MAX_SESS_ID_ATTEMPTS
)
163 /* else - woops a session_id match */
164 /* XXX We should also check the external cache --
165 * but the probability of a collision is negligible, and
166 * we could not prevent the concurrent creation of sessions
167 * with identical IDs since we currently don't have means
168 * to atomically check whether a session ID already exists
169 * and make a reservation for it if it does not
170 * (this problem applies to the internal cache as well).
175 int ssl_get_new_session(SSL
*s
, int session
)
177 /* This gets used by clients and servers. */
180 SSL_SESSION
*ss
=NULL
;
181 GEN_SESSION_CB cb
= def_generate_session_id
;
183 if ((ss
=SSL_SESSION_new()) == NULL
) return(0);
185 /* If the context has a default timeout, use it */
186 if (s
->ctx
->session_timeout
== 0)
187 ss
->timeout
=SSL_get_default_timeout(s
);
189 ss
->timeout
=s
->ctx
->session_timeout
;
191 if (s
->session
!= NULL
)
193 SSL_SESSION_free(s
->session
);
199 if (s
->version
== SSL2_VERSION
)
201 ss
->ssl_version
=SSL2_VERSION
;
202 ss
->session_id_length
=SSL2_SSL_SESSION_ID_LENGTH
;
204 else if (s
->version
== SSL3_VERSION
)
206 ss
->ssl_version
=SSL3_VERSION
;
207 ss
->session_id_length
=SSL3_SSL_SESSION_ID_LENGTH
;
209 else if (s
->version
== TLS1_VERSION
)
211 ss
->ssl_version
=TLS1_VERSION
;
212 ss
->session_id_length
=SSL3_SSL_SESSION_ID_LENGTH
;
214 else if (s
->version
== DTLS1_VERSION
)
216 ss
->ssl_version
=DTLS1_VERSION
;
217 ss
->session_id_length
=SSL3_SSL_SESSION_ID_LENGTH
;
221 SSLerr(SSL_F_SSL_GET_NEW_SESSION
,SSL_R_UNSUPPORTED_SSL_VERSION
);
222 SSL_SESSION_free(ss
);
225 #ifndef OPENSSL_NO_TLSEXT
226 /* If RFC4507 ticket use empty session ID */
227 if (s
->tlsext_ticket_expected
)
229 ss
->session_id_length
= 0;
233 /* Choose which callback will set the session ID */
234 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX
);
235 if(s
->generate_session_id
)
236 cb
= s
->generate_session_id
;
237 else if(s
->ctx
->generate_session_id
)
238 cb
= s
->ctx
->generate_session_id
;
239 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
240 /* Choose a session ID */
241 tmp
= ss
->session_id_length
;
242 if(!cb(s
, ss
->session_id
, &tmp
))
244 /* The callback failed */
245 SSLerr(SSL_F_SSL_GET_NEW_SESSION
,
246 SSL_R_SSL_SESSION_ID_CALLBACK_FAILED
);
247 SSL_SESSION_free(ss
);
250 /* Don't allow the callback to set the session length to zero.
251 * nor set it higher than it was. */
252 if(!tmp
|| (tmp
> ss
->session_id_length
))
254 /* The callback set an illegal length */
255 SSLerr(SSL_F_SSL_GET_NEW_SESSION
,
256 SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH
);
257 SSL_SESSION_free(ss
);
260 /* If the session length was shrunk and we're SSLv2, pad it */
261 if((tmp
< ss
->session_id_length
) && (s
->version
== SSL2_VERSION
))
262 memset(ss
->session_id
+ tmp
, 0, ss
->session_id_length
- tmp
);
264 ss
->session_id_length
= tmp
;
265 /* Finally, check for a conflict */
266 if(SSL_has_matching_session_id(s
, ss
->session_id
,
267 ss
->session_id_length
))
269 SSLerr(SSL_F_SSL_GET_NEW_SESSION
,
270 SSL_R_SSL_SESSION_ID_CONFLICT
);
271 SSL_SESSION_free(ss
);
274 #ifndef OPENSSL_NO_TLSEXT
276 if (s
->tlsext_hostname
) {
277 ss
->tlsext_hostname
= BUF_strdup(s
->tlsext_hostname
);
278 if (ss
->tlsext_hostname
== NULL
) {
279 SSLerr(SSL_F_SSL_GET_NEW_SESSION
, ERR_R_INTERNAL_ERROR
);
280 SSL_SESSION_free(ss
);
288 ss
->session_id_length
=0;
291 if (s
->sid_ctx_length
> sizeof ss
->sid_ctx
)
293 SSLerr(SSL_F_SSL_GET_NEW_SESSION
, ERR_R_INTERNAL_ERROR
);
294 SSL_SESSION_free(ss
);
297 memcpy(ss
->sid_ctx
,s
->sid_ctx
,s
->sid_ctx_length
);
298 ss
->sid_ctx_length
=s
->sid_ctx_length
;
300 ss
->ssl_version
=s
->version
;
301 ss
->verify_result
= X509_V_OK
;
306 int ssl_get_prev_session(SSL
*s
, unsigned char *session_id
, int len
,
307 const unsigned char *limit
)
309 /* This is used only by servers. */
311 SSL_SESSION
*ret
=NULL
;
313 #ifndef OPENSSL_NO_TLSEXT
317 if (len
> SSL_MAX_SSL_SESSION_ID_LENGTH
)
319 #ifndef OPENSSL_NO_TLSEXT
320 r
= tls1_process_ticket(s
, session_id
, len
, limit
, &ret
);
326 else if (r
== 0 || (!ret
&& !len
))
328 else if (!ret
&& !(s
->session_ctx
->session_cache_mode
& SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
))
332 if (!(s
->ctx
->session_cache_mode
& SSL_SESS_CACHE_NO_INTERNAL_LOOKUP
))
336 data
.ssl_version
=s
->version
;
337 data
.session_id_length
=len
;
340 memcpy(data
.session_id
,session_id
,len
);
341 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX
);
342 ret
=(SSL_SESSION
*)lh_retrieve(s
->ctx
->sessions
,&data
);
344 /* don't allow other threads to steal it: */
345 CRYPTO_add(&ret
->references
,1,CRYPTO_LOCK_SSL_SESSION
);
346 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX
);
353 s
->ctx
->stats
.sess_miss
++;
355 if (s
->ctx
->get_session_cb
!= NULL
356 && (ret
=s
->ctx
->get_session_cb(s
,session_id
,len
,©
))
359 s
->ctx
->stats
.sess_cb_hit
++;
361 /* Increment reference count now if the session callback
362 * asks us to do so (note that if the session structures
363 * returned by the callback are shared between threads,
364 * it must handle the reference count itself [i.e. copy == 0],
365 * or things won't be thread-safe). */
367 CRYPTO_add(&ret
->references
,1,CRYPTO_LOCK_SSL_SESSION
);
369 /* Add the externally cached session to the internal
370 * cache as well if and only if we are supposed to. */
371 if(!(s
->ctx
->session_cache_mode
& SSL_SESS_CACHE_NO_INTERNAL_STORE
))
372 /* The following should not return 1, otherwise,
373 * things are very strange */
374 SSL_CTX_add_session(s
->ctx
,ret
);
380 /* Now ret is non-NULL, and we own one of its reference counts. */
382 if (ret
->sid_ctx_length
!= s
->sid_ctx_length
383 || memcmp(ret
->sid_ctx
,s
->sid_ctx
,ret
->sid_ctx_length
))
385 /* We've found the session named by the client, but we don't
386 * want to use it in this context. */
388 #if 0 /* The client cannot always know when a session is not appropriate,
389 * so we shouldn't generate an error message. */
391 SSLerr(SSL_F_SSL_GET_PREV_SESSION
,SSL_R_ATTEMPT_TO_REUSE_SESSION_IN_DIFFERENT_CONTEXT
);
393 goto err
; /* treat like cache miss */
396 if((s
->verify_mode
& SSL_VERIFY_PEER
) && s
->sid_ctx_length
== 0)
398 /* We can't be sure if this session is being used out of
399 * context, which is especially important for SSL_VERIFY_PEER.
400 * The application should have used SSL[_CTX]_set_session_id_context.
402 * For this error case, we generate an error instead of treating
403 * the event like a cache miss (otherwise it would be easy for
404 * applications to effectively disable the session cache by
405 * accident without anyone noticing).
408 SSLerr(SSL_F_SSL_GET_PREV_SESSION
,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED
);
413 if (ret
->cipher
== NULL
)
415 unsigned char buf
[5],*p
;
421 if ((ret
->ssl_version
>>8) == SSL3_VERSION_MAJOR
)
422 ret
->cipher
=ssl_get_cipher_by_char(s
,&(buf
[2]));
424 ret
->cipher
=ssl_get_cipher_by_char(s
,&(buf
[1]));
425 if (ret
->cipher
== NULL
)
430 #if 0 /* This is way too late. */
432 /* If a thread got the session, then 'swaped', and another got
433 * it and then due to a time-out decided to 'OPENSSL_free' it we could
434 * be in trouble. So I'll increment it now, then double decrement
435 * later - am I speaking rubbish?. */
436 CRYPTO_add(&ret
->references
,1,CRYPTO_LOCK_SSL_SESSION
);
439 if (ret
->timeout
< (long)(time(NULL
) - ret
->time
)) /* timeout */
441 s
->ctx
->stats
.sess_timeout
++;
442 /* remove it from the cache */
443 SSL_CTX_remove_session(s
->ctx
,ret
);
447 s
->ctx
->stats
.sess_hit
++;
449 /* ret->time=time(NULL); */ /* rezero timeout? */
450 /* again, just leave the session
451 * if it is the same session, we have just incremented and
452 * then decremented the reference count :-) */
453 if (s
->session
!= NULL
)
454 SSL_SESSION_free(s
->session
);
456 s
->verify_result
= s
->session
->verify_result
;
461 SSL_SESSION_free(ret
);
468 int SSL_CTX_add_session(SSL_CTX
*ctx
, SSL_SESSION
*c
)
473 /* add just 1 reference count for the SSL_CTX's session cache
474 * even though it has two ways of access: each session is in a
475 * doubly linked list and an lhash */
476 CRYPTO_add(&c
->references
,1,CRYPTO_LOCK_SSL_SESSION
);
477 /* if session c is in already in cache, we take back the increment later */
479 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
480 s
=(SSL_SESSION
*)lh_insert(ctx
->sessions
,c
);
482 /* s != NULL iff we already had a session with the given PID.
483 * In this case, s == c should hold (then we did not really modify
484 * ctx->sessions), or we're in trouble. */
485 if (s
!= NULL
&& s
!= c
)
487 /* We *are* in trouble ... */
488 SSL_SESSION_list_remove(ctx
,s
);
490 /* ... so pretend the other session did not exist in cache
491 * (we cannot handle two SSL_SESSION structures with identical
492 * session ID in the same cache, which could happen e.g. when
493 * two threads concurrently obtain the same session from an external
498 /* Put at the head of the queue unless it is already in the cache */
500 SSL_SESSION_list_add(ctx
,c
);
504 /* existing cache entry -- decrement previously incremented reference
505 * count because it already takes into account the cache */
507 SSL_SESSION_free(s
); /* s == c */
512 /* new cache entry -- remove old ones if cache has become too large */
516 if (SSL_CTX_sess_get_cache_size(ctx
) > 0)
518 while (SSL_CTX_sess_number(ctx
) >
519 SSL_CTX_sess_get_cache_size(ctx
))
521 if (!remove_session_lock(ctx
,
522 ctx
->session_cache_tail
, 0))
525 ctx
->stats
.sess_cache_full
++;
529 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
533 int SSL_CTX_remove_session(SSL_CTX
*ctx
, SSL_SESSION
*c
)
535 return remove_session_lock(ctx
, c
, 1);
538 static int remove_session_lock(SSL_CTX
*ctx
, SSL_SESSION
*c
, int lck
)
543 if ((c
!= NULL
) && (c
->session_id_length
!= 0))
545 if(lck
) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
546 if ((r
= (SSL_SESSION
*)lh_retrieve(ctx
->sessions
,c
)) == c
)
549 r
=(SSL_SESSION
*)lh_delete(ctx
->sessions
,c
);
550 SSL_SESSION_list_remove(ctx
,c
);
553 if(lck
) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
558 if (ctx
->remove_session_cb
!= NULL
)
559 ctx
->remove_session_cb(ctx
,r
);
568 void SSL_SESSION_free(SSL_SESSION
*ss
)
575 i
=CRYPTO_add(&ss
->references
,-1,CRYPTO_LOCK_SSL_SESSION
);
577 REF_PRINT("SSL_SESSION",ss
);
583 fprintf(stderr
,"SSL_SESSION_free, bad reference count\n");
588 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION
, ss
, &ss
->ex_data
);
590 OPENSSL_cleanse(ss
->key_arg
,sizeof ss
->key_arg
);
591 OPENSSL_cleanse(ss
->master_key
,sizeof ss
->master_key
);
592 OPENSSL_cleanse(ss
->session_id
,sizeof ss
->session_id
);
593 if (ss
->sess_cert
!= NULL
) ssl_sess_cert_free(ss
->sess_cert
);
594 if (ss
->peer
!= NULL
) X509_free(ss
->peer
);
595 if (ss
->ciphers
!= NULL
) sk_SSL_CIPHER_free(ss
->ciphers
);
596 #ifndef OPENSSL_NO_TLSEXT
597 if (ss
->tlsext_hostname
!= NULL
) OPENSSL_free(ss
->tlsext_hostname
);
598 if (ss
->tlsext_tick
!= NULL
) OPENSSL_free(ss
->tlsext_tick
);
600 OPENSSL_cleanse(ss
,sizeof(*ss
));
604 int SSL_set_session(SSL
*s
, SSL_SESSION
*session
)
611 meth
=s
->ctx
->method
->get_ssl_method(session
->ssl_version
);
613 meth
=s
->method
->get_ssl_method(session
->ssl_version
);
616 SSLerr(SSL_F_SSL_SET_SESSION
,SSL_R_UNABLE_TO_FIND_SSL_METHOD
);
620 if (meth
!= s
->method
)
622 if (!SSL_set_ssl_method(s
,meth
))
624 if (s
->ctx
->session_timeout
== 0)
625 session
->timeout
=SSL_get_default_timeout(s
);
627 session
->timeout
=s
->ctx
->session_timeout
;
630 #ifndef OPENSSL_NO_KRB5
631 if (s
->kssl_ctx
&& !s
->kssl_ctx
->client_princ
&&
632 session
->krb5_client_princ_len
> 0)
634 s
->kssl_ctx
->client_princ
= (char *)OPENSSL_malloc(session
->krb5_client_princ_len
+ 1);
635 memcpy(s
->kssl_ctx
->client_princ
,session
->krb5_client_princ
,
636 session
->krb5_client_princ_len
);
637 s
->kssl_ctx
->client_princ
[session
->krb5_client_princ_len
] = '\0';
639 #endif /* OPENSSL_NO_KRB5 */
641 /* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/
642 CRYPTO_add(&session
->references
,1,CRYPTO_LOCK_SSL_SESSION
);
643 if (s
->session
!= NULL
)
644 SSL_SESSION_free(s
->session
);
646 s
->verify_result
= s
->session
->verify_result
;
647 /* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/
652 if (s
->session
!= NULL
)
654 SSL_SESSION_free(s
->session
);
659 if (meth
!= s
->method
)
661 if (!SSL_set_ssl_method(s
,meth
))
669 long SSL_SESSION_set_timeout(SSL_SESSION
*s
, long t
)
671 if (s
== NULL
) return(0);
676 long SSL_SESSION_get_timeout(const SSL_SESSION
*s
)
678 if (s
== NULL
) return(0);
682 long SSL_SESSION_get_time(const SSL_SESSION
*s
)
684 if (s
== NULL
) return(0);
688 long SSL_SESSION_set_time(SSL_SESSION
*s
, long t
)
690 if (s
== NULL
) return(0);
695 long SSL_CTX_set_timeout(SSL_CTX
*s
, long t
)
698 if (s
== NULL
) return(0);
699 l
=s
->session_timeout
;
700 s
->session_timeout
=t
;
704 long SSL_CTX_get_timeout(const SSL_CTX
*s
)
706 if (s
== NULL
) return(0);
707 return(s
->session_timeout
);
710 typedef struct timeout_param_st
717 static void timeout(SSL_SESSION
*s
, TIMEOUT_PARAM
*p
)
719 if ((p
->time
== 0) || (p
->time
> (s
->time
+s
->timeout
))) /* timeout */
721 /* The reason we don't call SSL_CTX_remove_session() is to
722 * save on locking overhead */
723 lh_delete(p
->cache
,s
);
724 SSL_SESSION_list_remove(p
->ctx
,s
);
726 if (p
->ctx
->remove_session_cb
!= NULL
)
727 p
->ctx
->remove_session_cb(p
->ctx
,s
);
732 static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout
, SSL_SESSION
*, TIMEOUT_PARAM
*)
734 void SSL_CTX_flush_sessions(SSL_CTX
*s
, long t
)
740 tp
.cache
=s
->sessions
;
741 if (tp
.cache
== NULL
) return;
743 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX
);
744 i
=tp
.cache
->down_load
;
745 tp
.cache
->down_load
=0;
746 lh_doall_arg(tp
.cache
, LHASH_DOALL_ARG_FN(timeout
), &tp
);
747 tp
.cache
->down_load
=i
;
748 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX
);
751 int ssl_clear_bad_session(SSL
*s
)
753 if ( (s
->session
!= NULL
) &&
754 !(s
->shutdown
& SSL_SENT_SHUTDOWN
) &&
755 !(SSL_in_init(s
) || SSL_in_before(s
)))
757 SSL_CTX_remove_session(s
->ctx
,s
->session
);
764 /* locked by SSL_CTX in the calling function */
765 static void SSL_SESSION_list_remove(SSL_CTX
*ctx
, SSL_SESSION
*s
)
767 if ((s
->next
== NULL
) || (s
->prev
== NULL
)) return;
769 if (s
->next
== (SSL_SESSION
*)&(ctx
->session_cache_tail
))
770 { /* last element in list */
771 if (s
->prev
== (SSL_SESSION
*)&(ctx
->session_cache_head
))
772 { /* only one element in list */
773 ctx
->session_cache_head
=NULL
;
774 ctx
->session_cache_tail
=NULL
;
778 ctx
->session_cache_tail
=s
->prev
;
779 s
->prev
->next
=(SSL_SESSION
*)&(ctx
->session_cache_tail
);
784 if (s
->prev
== (SSL_SESSION
*)&(ctx
->session_cache_head
))
785 { /* first element in list */
786 ctx
->session_cache_head
=s
->next
;
787 s
->next
->prev
=(SSL_SESSION
*)&(ctx
->session_cache_head
);
790 { /* middle of list */
791 s
->next
->prev
=s
->prev
;
792 s
->prev
->next
=s
->next
;
795 s
->prev
=s
->next
=NULL
;
798 static void SSL_SESSION_list_add(SSL_CTX
*ctx
, SSL_SESSION
*s
)
800 if ((s
->next
!= NULL
) && (s
->prev
!= NULL
))
801 SSL_SESSION_list_remove(ctx
,s
);
803 if (ctx
->session_cache_head
== NULL
)
805 ctx
->session_cache_head
=s
;
806 ctx
->session_cache_tail
=s
;
807 s
->prev
=(SSL_SESSION
*)&(ctx
->session_cache_head
);
808 s
->next
=(SSL_SESSION
*)&(ctx
->session_cache_tail
);
812 s
->next
=ctx
->session_cache_head
;
814 s
->prev
=(SSL_SESSION
*)&(ctx
->session_cache_head
);
815 ctx
->session_cache_head
=s
;
819 void SSL_CTX_sess_set_new_cb(SSL_CTX
*ctx
,
820 int (*cb
)(struct ssl_st
*ssl
,SSL_SESSION
*sess
))
822 ctx
->new_session_cb
=cb
;
825 int (*SSL_CTX_sess_get_new_cb(SSL_CTX
*ctx
))(SSL
*ssl
, SSL_SESSION
*sess
)
827 return ctx
->new_session_cb
;
830 void SSL_CTX_sess_set_remove_cb(SSL_CTX
*ctx
,
831 void (*cb
)(SSL_CTX
*ctx
,SSL_SESSION
*sess
))
833 ctx
->remove_session_cb
=cb
;
836 void (*SSL_CTX_sess_get_remove_cb(SSL_CTX
*ctx
))(SSL_CTX
* ctx
,SSL_SESSION
*sess
)
838 return ctx
->remove_session_cb
;
841 void SSL_CTX_sess_set_get_cb(SSL_CTX
*ctx
,
842 SSL_SESSION
*(*cb
)(struct ssl_st
*ssl
,
843 unsigned char *data
,int len
,int *copy
))
845 ctx
->get_session_cb
=cb
;
848 SSL_SESSION
* (*SSL_CTX_sess_get_get_cb(SSL_CTX
*ctx
))(SSL
*ssl
,
849 unsigned char *data
,int len
,int *copy
)
851 return ctx
->get_session_cb
;
854 void SSL_CTX_set_info_callback(SSL_CTX
*ctx
,
855 void (*cb
)(const SSL
*ssl
,int type
,int val
))
857 ctx
->info_callback
=cb
;
860 void (*SSL_CTX_get_info_callback(SSL_CTX
*ctx
))(const SSL
*ssl
,int type
,int val
)
862 return ctx
->info_callback
;
865 void SSL_CTX_set_client_cert_cb(SSL_CTX
*ctx
,
866 int (*cb
)(SSL
*ssl
, X509
**x509
, EVP_PKEY
**pkey
))
868 ctx
->client_cert_cb
=cb
;
871 int (*SSL_CTX_get_client_cert_cb(SSL_CTX
*ctx
))(SSL
* ssl
, X509
** x509
, EVP_PKEY
**pkey
)
873 return ctx
->client_cert_cb
;
876 #ifndef OPENSSL_NO_ENGINE
877 int SSL_CTX_set_client_cert_engine(SSL_CTX
*ctx
, ENGINE
*e
)
881 SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE
, ERR_R_ENGINE_LIB
);
884 if(!ENGINE_get_ssl_client_cert_function(e
))
886 SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE
, SSL_R_NO_CLIENT_CERT_METHOD
);
890 ctx
->client_cert_engine
= e
;
895 void SSL_CTX_set_cookie_generate_cb(SSL_CTX
*ctx
,
896 int (*cb
)(SSL
*ssl
, unsigned char *cookie
, unsigned int *cookie_len
))
898 ctx
->app_gen_cookie_cb
=cb
;
901 void SSL_CTX_set_cookie_verify_cb(SSL_CTX
*ctx
,
902 int (*cb
)(SSL
*ssl
, unsigned char *cookie
, unsigned int cookie_len
))
904 ctx
->app_verify_cookie_cb
=cb
;