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
#ifndef OPENSSL_NO_ENGINE
142
#include <openssl/engine.h>
144
#include "ssl_locl.h"
146
static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
147
static void SSL_SESSION_list_add(SSL_CTX *ctx,SSL_SESSION *s);
148
static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck);
150
SSL_SESSION *SSL_get_session(const SSL *ssl)
151
/* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
153
return(ssl->session);
156
SSL_SESSION *SSL_get1_session(SSL *ssl)
157
/* variant of SSL_get_session: caller really gets something */
160
/* Need to lock this all up rather than just use CRYPTO_add so that
161
* somebody doesn't free ssl->session between when we check it's
162
* non-null and when we up the reference count. */
163
CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION);
167
CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION);
171
int SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
172
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
174
return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION, argl, argp,
175
new_func, dup_func, free_func);
178
int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg)
180
return(CRYPTO_set_ex_data(&s->ex_data,idx,arg));
183
void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx)
185
return(CRYPTO_get_ex_data(&s->ex_data,idx));
188
SSL_SESSION *SSL_SESSION_new(void)
192
ss=(SSL_SESSION *)OPENSSL_malloc(sizeof(SSL_SESSION));
195
SSLerr(SSL_F_SSL_SESSION_NEW,ERR_R_MALLOC_FAILURE);
198
memset(ss,0,sizeof(SSL_SESSION));
200
ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */
202
ss->timeout=60*5+4; /* 5 minute timeout by default */
203
ss->time=(unsigned long)time(NULL);
207
#ifndef OPENSSL_NO_TLSEXT
208
ss->tlsext_hostname = NULL;
209
#ifndef OPENSSL_NO_EC
210
ss->tlsext_ecpointformatlist_length = 0;
211
ss->tlsext_ecpointformatlist = NULL;
212
ss->tlsext_ellipticcurvelist_length = 0;
213
ss->tlsext_ellipticcurvelist = NULL;
216
CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
217
#ifndef OPENSSL_NO_PSK
218
ss->psk_identity_hint=NULL;
219
ss->psk_identity=NULL;
221
#ifndef OPENSSL_NO_SRP
222
ss->srp_username=NULL;
227
const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len)
230
*len = s->session_id_length;
231
return s->session_id;
234
unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s)
236
return s->compress_meth;
239
/* Even with SSLv2, we have 16 bytes (128 bits) of session ID space. SSLv3/TLSv1
240
* has 32 bytes (256 bits). As such, filling the ID with random gunk repeatedly
241
* until we have no conflict is going to complete in one iteration pretty much
242
* "most" of the time (btw: understatement). So, if it takes us 10 iterations
243
* and we still can't avoid a conflict - well that's a reasonable point to call
244
* it quits. Either the RAND code is broken or someone is trying to open roughly
245
* very close to 2^128 (or 2^256) SSL sessions to our server. How you might
246
* store that many sessions is perhaps a more interesting question ... */
248
#define MAX_SESS_ID_ATTEMPTS 10
249
static int def_generate_session_id(const SSL *ssl, unsigned char *id,
250
unsigned int *id_len)
252
unsigned int retry = 0;
254
if (RAND_pseudo_bytes(id, *id_len) <= 0)
256
while(SSL_has_matching_session_id(ssl, id, *id_len) &&
257
(++retry < MAX_SESS_ID_ATTEMPTS));
258
if(retry < MAX_SESS_ID_ATTEMPTS)
260
/* else - woops a session_id match */
261
/* XXX We should also check the external cache --
262
* but the probability of a collision is negligible, and
263
* we could not prevent the concurrent creation of sessions
264
* with identical IDs since we currently don't have means
265
* to atomically check whether a session ID already exists
266
* and make a reservation for it if it does not
267
* (this problem applies to the internal cache as well).
272
int ssl_get_new_session(SSL *s, int session)
274
/* This gets used by clients and servers. */
277
SSL_SESSION *ss=NULL;
278
GEN_SESSION_CB cb = def_generate_session_id;
280
if ((ss=SSL_SESSION_new()) == NULL) return(0);
282
/* If the context has a default timeout, use it */
283
if (s->session_ctx->session_timeout == 0)
284
ss->timeout=SSL_get_default_timeout(s);
286
ss->timeout=s->session_ctx->session_timeout;
288
if (s->session != NULL)
290
SSL_SESSION_free(s->session);
296
if (s->version == SSL2_VERSION)
298
ss->ssl_version=SSL2_VERSION;
299
ss->session_id_length=SSL2_SSL_SESSION_ID_LENGTH;
301
else if (s->version == SSL3_VERSION)
303
ss->ssl_version=SSL3_VERSION;
304
ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
306
else if (s->version == TLS1_VERSION)
308
ss->ssl_version=TLS1_VERSION;
309
ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
311
else if (s->version == TLS1_1_VERSION)
313
ss->ssl_version=TLS1_1_VERSION;
314
ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
316
else if (s->version == TLS1_2_VERSION)
318
ss->ssl_version=TLS1_2_VERSION;
319
ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
321
else if (s->version == DTLS1_BAD_VER)
323
ss->ssl_version=DTLS1_BAD_VER;
324
ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
326
else if (s->version == DTLS1_VERSION)
328
ss->ssl_version=DTLS1_VERSION;
329
ss->session_id_length=SSL3_SSL_SESSION_ID_LENGTH;
333
SSLerr(SSL_F_SSL_GET_NEW_SESSION,SSL_R_UNSUPPORTED_SSL_VERSION);
334
SSL_SESSION_free(ss);
337
#ifndef OPENSSL_NO_TLSEXT
338
/* If RFC4507 ticket use empty session ID */
339
if (s->tlsext_ticket_expected)
341
ss->session_id_length = 0;
345
/* Choose which callback will set the session ID */
346
CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
347
if(s->generate_session_id)
348
cb = s->generate_session_id;
349
else if(s->session_ctx->generate_session_id)
350
cb = s->session_ctx->generate_session_id;
351
CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
352
/* Choose a session ID */
353
tmp = ss->session_id_length;
354
if(!cb(s, ss->session_id, &tmp))
356
/* The callback failed */
357
SSLerr(SSL_F_SSL_GET_NEW_SESSION,
358
SSL_R_SSL_SESSION_ID_CALLBACK_FAILED);
359
SSL_SESSION_free(ss);
362
/* Don't allow the callback to set the session length to zero.
363
* nor set it higher than it was. */
364
if(!tmp || (tmp > ss->session_id_length))
366
/* The callback set an illegal length */
367
SSLerr(SSL_F_SSL_GET_NEW_SESSION,
368
SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
369
SSL_SESSION_free(ss);
372
/* If the session length was shrunk and we're SSLv2, pad it */
373
if((tmp < ss->session_id_length) && (s->version == SSL2_VERSION))
374
memset(ss->session_id + tmp, 0, ss->session_id_length - tmp);
376
ss->session_id_length = tmp;
377
/* Finally, check for a conflict */
378
if(SSL_has_matching_session_id(s, ss->session_id,
379
ss->session_id_length))
381
SSLerr(SSL_F_SSL_GET_NEW_SESSION,
382
SSL_R_SSL_SESSION_ID_CONFLICT);
383
SSL_SESSION_free(ss);
386
#ifndef OPENSSL_NO_TLSEXT
388
if (s->tlsext_hostname) {
389
ss->tlsext_hostname = BUF_strdup(s->tlsext_hostname);
390
if (ss->tlsext_hostname == NULL) {
391
SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
392
SSL_SESSION_free(ss);
396
#ifndef OPENSSL_NO_EC
397
if (s->tlsext_ecpointformatlist)
399
if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist);
400
if ((ss->tlsext_ecpointformatlist = OPENSSL_malloc(s->tlsext_ecpointformatlist_length)) == NULL)
402
SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
403
SSL_SESSION_free(ss);
406
ss->tlsext_ecpointformatlist_length = s->tlsext_ecpointformatlist_length;
407
memcpy(ss->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist, s->tlsext_ecpointformatlist_length);
409
if (s->tlsext_ellipticcurvelist)
411
if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist);
412
if ((ss->tlsext_ellipticcurvelist = OPENSSL_malloc(s->tlsext_ellipticcurvelist_length)) == NULL)
414
SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_MALLOC_FAILURE);
415
SSL_SESSION_free(ss);
418
ss->tlsext_ellipticcurvelist_length = s->tlsext_ellipticcurvelist_length;
419
memcpy(ss->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist, s->tlsext_ellipticcurvelist_length);
426
ss->session_id_length=0;
429
if (s->sid_ctx_length > sizeof ss->sid_ctx)
431
SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR);
432
SSL_SESSION_free(ss);
435
memcpy(ss->sid_ctx,s->sid_ctx,s->sid_ctx_length);
436
ss->sid_ctx_length=s->sid_ctx_length;
438
ss->ssl_version=s->version;
439
ss->verify_result = X509_V_OK;
444
/* ssl_get_prev attempts to find an SSL_SESSION to be used to resume this
445
* connection. It is only called by servers.
447
* session_id: points at the session ID in the ClientHello. This code will
448
* read past the end of this in order to parse out the session ticket
450
* len: the length of the session ID.
451
* limit: a pointer to the first byte after the ClientHello.
455
* 0: a session may have been found.
458
* - If a session is found then s->session is pointed at it (after freeing an
459
* existing session if need be) and s->verify_result is set from the session.
460
* - Both for new and resumed sessions, s->tlsext_ticket_expected is set to 1
461
* if the server should issue a new session ticket (to 0 otherwise).
463
int ssl_get_prev_session(SSL *s, unsigned char *session_id, int len,
464
const unsigned char *limit)
466
/* This is used only by servers. */
468
SSL_SESSION *ret=NULL;
470
int try_session_cache = 1;
471
#ifndef OPENSSL_NO_TLSEXT
475
if (len > SSL_MAX_SSL_SESSION_ID_LENGTH)
479
try_session_cache = 0;
481
#ifndef OPENSSL_NO_TLSEXT
482
r = tls1_process_ticket(s, session_id, len, limit, &ret); /* sets s->tlsext_ticket_expected */
485
case -1: /* Error during processing */
488
case 0: /* No ticket found */
489
case 1: /* Zero length ticket found */
490
break; /* Ok to carry on processing session id. */
491
case 2: /* Ticket found but not decrypted. */
492
case 3: /* Ticket decrypted, *ret has been set. */
493
try_session_cache = 0;
500
if (try_session_cache &&
502
!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
505
data.ssl_version=s->version;
506
data.session_id_length=len;
509
memcpy(data.session_id,session_id,len);
510
CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
511
ret=lh_SSL_SESSION_retrieve(s->session_ctx->sessions,&data);
514
/* don't allow other threads to steal it: */
515
CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
517
CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
519
s->session_ctx->stats.sess_miss++;
522
if (try_session_cache &&
524
s->session_ctx->get_session_cb != NULL)
528
if ((ret=s->session_ctx->get_session_cb(s,session_id,len,©)))
530
s->session_ctx->stats.sess_cb_hit++;
532
/* Increment reference count now if the session callback
533
* asks us to do so (note that if the session structures
534
* returned by the callback are shared between threads,
535
* it must handle the reference count itself [i.e. copy == 0],
536
* or things won't be thread-safe). */
538
CRYPTO_add(&ret->references,1,CRYPTO_LOCK_SSL_SESSION);
540
/* Add the externally cached session to the internal
541
* cache as well if and only if we are supposed to. */
542
if(!(s->session_ctx->session_cache_mode & SSL_SESS_CACHE_NO_INTERNAL_STORE))
543
/* The following should not return 1, otherwise,
544
* things are very strange */
545
SSL_CTX_add_session(s->session_ctx,ret);
552
/* Now ret is non-NULL and we own one of its reference counts. */
554
if (ret->sid_ctx_length != s->sid_ctx_length
555
|| memcmp(ret->sid_ctx,s->sid_ctx,ret->sid_ctx_length))
557
/* We have the session requested by the client, but we don't
558
* want to use it in this context. */
559
goto err; /* treat like cache miss */
562
if((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0)
564
/* We can't be sure if this session is being used out of
565
* context, which is especially important for SSL_VERIFY_PEER.
566
* The application should have used SSL[_CTX]_set_session_id_context.
568
* For this error case, we generate an error instead of treating
569
* the event like a cache miss (otherwise it would be easy for
570
* applications to effectively disable the session cache by
571
* accident without anyone noticing).
574
SSLerr(SSL_F_SSL_GET_PREV_SESSION,SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
579
if (ret->cipher == NULL)
581
unsigned char buf[5],*p;
587
if ((ret->ssl_version>>8) >= SSL3_VERSION_MAJOR)
588
ret->cipher=ssl_get_cipher_by_char(s,&(buf[2]));
590
ret->cipher=ssl_get_cipher_by_char(s,&(buf[1]));
591
if (ret->cipher == NULL)
595
if (ret->timeout < (long)(time(NULL) - ret->time)) /* timeout */
597
s->session_ctx->stats.sess_timeout++;
598
if (try_session_cache)
600
/* session was from the cache, so remove it */
601
SSL_CTX_remove_session(s->session_ctx,ret);
606
s->session_ctx->stats.sess_hit++;
608
if (s->session != NULL)
609
SSL_SESSION_free(s->session);
611
s->verify_result = s->session->verify_result;
617
SSL_SESSION_free(ret);
618
#ifndef OPENSSL_NO_TLSEXT
619
if (!try_session_cache)
621
/* The session was from a ticket, so we should
622
* issue a ticket for the new session */
623
s->tlsext_ticket_expected = 1;
633
int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
638
/* add just 1 reference count for the SSL_CTX's session cache
639
* even though it has two ways of access: each session is in a
640
* doubly linked list and an lhash */
641
CRYPTO_add(&c->references,1,CRYPTO_LOCK_SSL_SESSION);
642
/* if session c is in already in cache, we take back the increment later */
644
CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
645
s=lh_SSL_SESSION_insert(ctx->sessions,c);
647
/* s != NULL iff we already had a session with the given PID.
648
* In this case, s == c should hold (then we did not really modify
649
* ctx->sessions), or we're in trouble. */
650
if (s != NULL && s != c)
652
/* We *are* in trouble ... */
653
SSL_SESSION_list_remove(ctx,s);
655
/* ... so pretend the other session did not exist in cache
656
* (we cannot handle two SSL_SESSION structures with identical
657
* session ID in the same cache, which could happen e.g. when
658
* two threads concurrently obtain the same session from an external
663
/* Put at the head of the queue unless it is already in the cache */
665
SSL_SESSION_list_add(ctx,c);
669
/* existing cache entry -- decrement previously incremented reference
670
* count because it already takes into account the cache */
672
SSL_SESSION_free(s); /* s == c */
677
/* new cache entry -- remove old ones if cache has become too large */
681
if (SSL_CTX_sess_get_cache_size(ctx) > 0)
683
while (SSL_CTX_sess_number(ctx) >
684
SSL_CTX_sess_get_cache_size(ctx))
686
if (!remove_session_lock(ctx,
687
ctx->session_cache_tail, 0))
690
ctx->stats.sess_cache_full++;
694
CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
698
int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c)
700
return remove_session_lock(ctx, c, 1);
703
static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck)
708
if ((c != NULL) && (c->session_id_length != 0))
710
if(lck) CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
711
if ((r = lh_SSL_SESSION_retrieve(ctx->sessions,c)) == c)
714
r=lh_SSL_SESSION_delete(ctx->sessions,c);
715
SSL_SESSION_list_remove(ctx,c);
718
if(lck) CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
723
if (ctx->remove_session_cb != NULL)
724
ctx->remove_session_cb(ctx,r);
733
void SSL_SESSION_free(SSL_SESSION *ss)
740
i=CRYPTO_add(&ss->references,-1,CRYPTO_LOCK_SSL_SESSION);
742
REF_PRINT("SSL_SESSION",ss);
748
fprintf(stderr,"SSL_SESSION_free, bad reference count\n");
753
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
755
OPENSSL_cleanse(ss->key_arg,sizeof ss->key_arg);
756
OPENSSL_cleanse(ss->master_key,sizeof ss->master_key);
757
OPENSSL_cleanse(ss->session_id,sizeof ss->session_id);
758
if (ss->sess_cert != NULL) ssl_sess_cert_free(ss->sess_cert);
759
if (ss->peer != NULL) X509_free(ss->peer);
760
if (ss->ciphers != NULL) sk_SSL_CIPHER_free(ss->ciphers);
761
#ifndef OPENSSL_NO_TLSEXT
762
if (ss->tlsext_hostname != NULL) OPENSSL_free(ss->tlsext_hostname);
763
if (ss->tlsext_tick != NULL) OPENSSL_free(ss->tlsext_tick);
764
#ifndef OPENSSL_NO_EC
765
ss->tlsext_ecpointformatlist_length = 0;
766
if (ss->tlsext_ecpointformatlist != NULL) OPENSSL_free(ss->tlsext_ecpointformatlist);
767
ss->tlsext_ellipticcurvelist_length = 0;
768
if (ss->tlsext_ellipticcurvelist != NULL) OPENSSL_free(ss->tlsext_ellipticcurvelist);
769
#endif /* OPENSSL_NO_EC */
771
#ifndef OPENSSL_NO_PSK
772
if (ss->psk_identity_hint != NULL)
773
OPENSSL_free(ss->psk_identity_hint);
774
if (ss->psk_identity != NULL)
775
OPENSSL_free(ss->psk_identity);
777
#ifndef OPENSSL_NO_SRP
778
if (ss->srp_username != NULL)
779
OPENSSL_free(ss->srp_username);
781
OPENSSL_cleanse(ss,sizeof(*ss));
785
int SSL_set_session(SSL *s, SSL_SESSION *session)
788
const SSL_METHOD *meth;
792
meth=s->ctx->method->get_ssl_method(session->ssl_version);
794
meth=s->method->get_ssl_method(session->ssl_version);
797
SSLerr(SSL_F_SSL_SET_SESSION,SSL_R_UNABLE_TO_FIND_SSL_METHOD);
801
if (meth != s->method)
803
if (!SSL_set_ssl_method(s,meth))
807
#ifndef OPENSSL_NO_KRB5
808
if (s->kssl_ctx && !s->kssl_ctx->client_princ &&
809
session->krb5_client_princ_len > 0)
811
s->kssl_ctx->client_princ = (char *)OPENSSL_malloc(session->krb5_client_princ_len + 1);
812
memcpy(s->kssl_ctx->client_princ,session->krb5_client_princ,
813
session->krb5_client_princ_len);
814
s->kssl_ctx->client_princ[session->krb5_client_princ_len] = '\0';
816
#endif /* OPENSSL_NO_KRB5 */
818
/* CRYPTO_w_lock(CRYPTO_LOCK_SSL);*/
819
CRYPTO_add(&session->references,1,CRYPTO_LOCK_SSL_SESSION);
820
if (s->session != NULL)
821
SSL_SESSION_free(s->session);
823
s->verify_result = s->session->verify_result;
824
/* CRYPTO_w_unlock(CRYPTO_LOCK_SSL);*/
829
if (s->session != NULL)
831
SSL_SESSION_free(s->session);
836
if (meth != s->method)
838
if (!SSL_set_ssl_method(s,meth))
846
long SSL_SESSION_set_timeout(SSL_SESSION *s, long t)
848
if (s == NULL) return(0);
853
long SSL_SESSION_get_timeout(const SSL_SESSION *s)
855
if (s == NULL) return(0);
859
long SSL_SESSION_get_time(const SSL_SESSION *s)
861
if (s == NULL) return(0);
865
long SSL_SESSION_set_time(SSL_SESSION *s, long t)
867
if (s == NULL) return(0);
872
X509 *SSL_SESSION_get0_peer(SSL_SESSION *s)
877
int SSL_SESSION_set1_id_context(SSL_SESSION *s,const unsigned char *sid_ctx,
878
unsigned int sid_ctx_len)
880
if(sid_ctx_len > SSL_MAX_SID_CTX_LENGTH)
882
SSLerr(SSL_F_SSL_SESSION_SET1_ID_CONTEXT,SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
885
s->sid_ctx_length=sid_ctx_len;
886
memcpy(s->sid_ctx,sid_ctx,sid_ctx_len);
891
long SSL_CTX_set_timeout(SSL_CTX *s, long t)
894
if (s == NULL) return(0);
895
l=s->session_timeout;
896
s->session_timeout=t;
900
long SSL_CTX_get_timeout(const SSL_CTX *s)
902
if (s == NULL) return(0);
903
return(s->session_timeout);
906
#ifndef OPENSSL_NO_TLSEXT
907
int SSL_set_session_secret_cb(SSL *s, int (*tls_session_secret_cb)(SSL *s, void *secret, int *secret_len,
908
STACK_OF(SSL_CIPHER) *peer_ciphers, SSL_CIPHER **cipher, void *arg), void *arg)
910
if (s == NULL) return(0);
911
s->tls_session_secret_cb = tls_session_secret_cb;
912
s->tls_session_secret_cb_arg = arg;
916
int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb,
919
if (s == NULL) return(0);
920
s->tls_session_ticket_ext_cb = cb;
921
s->tls_session_ticket_ext_cb_arg = arg;
925
int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len)
927
if (s->version >= TLS1_VERSION)
929
if (s->tlsext_session_ticket)
931
OPENSSL_free(s->tlsext_session_ticket);
932
s->tlsext_session_ticket = NULL;
935
s->tlsext_session_ticket = OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len);
936
if (!s->tlsext_session_ticket)
938
SSLerr(SSL_F_SSL_SET_SESSION_TICKET_EXT, ERR_R_MALLOC_FAILURE);
944
s->tlsext_session_ticket->length = ext_len;
945
s->tlsext_session_ticket->data = s->tlsext_session_ticket + 1;
946
memcpy(s->tlsext_session_ticket->data, ext_data, ext_len);
950
s->tlsext_session_ticket->length = 0;
951
s->tlsext_session_ticket->data = NULL;
959
#endif /* OPENSSL_NO_TLSEXT */
961
typedef struct timeout_param_st
965
LHASH_OF(SSL_SESSION) *cache;
968
static void timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p)
970
if ((p->time == 0) || (p->time > (s->time+s->timeout))) /* timeout */
972
/* The reason we don't call SSL_CTX_remove_session() is to
973
* save on locking overhead */
974
(void)lh_SSL_SESSION_delete(p->cache,s);
975
SSL_SESSION_list_remove(p->ctx,s);
977
if (p->ctx->remove_session_cb != NULL)
978
p->ctx->remove_session_cb(p->ctx,s);
983
static IMPLEMENT_LHASH_DOALL_ARG_FN(timeout, SSL_SESSION, TIMEOUT_PARAM)
985
void SSL_CTX_flush_sessions(SSL_CTX *s, long t)
991
tp.cache=s->sessions;
992
if (tp.cache == NULL) return;
994
CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
995
i=CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load;
996
CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=0;
997
lh_SSL_SESSION_doall_arg(tp.cache, LHASH_DOALL_ARG_FN(timeout),
999
CHECKED_LHASH_OF(SSL_SESSION, tp.cache)->down_load=i;
1000
CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
1003
int ssl_clear_bad_session(SSL *s)
1005
if ( (s->session != NULL) &&
1006
!(s->shutdown & SSL_SENT_SHUTDOWN) &&
1007
!(SSL_in_init(s) || SSL_in_before(s)))
1009
SSL_CTX_remove_session(s->ctx,s->session);
1016
/* locked by SSL_CTX in the calling function */
1017
static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s)
1019
if ((s->next == NULL) || (s->prev == NULL)) return;
1021
if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail))
1022
{ /* last element in list */
1023
if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
1024
{ /* only one element in list */
1025
ctx->session_cache_head=NULL;
1026
ctx->session_cache_tail=NULL;
1030
ctx->session_cache_tail=s->prev;
1031
s->prev->next=(SSL_SESSION *)&(ctx->session_cache_tail);
1036
if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head))
1037
{ /* first element in list */
1038
ctx->session_cache_head=s->next;
1039
s->next->prev=(SSL_SESSION *)&(ctx->session_cache_head);
1042
{ /* middle of list */
1043
s->next->prev=s->prev;
1044
s->prev->next=s->next;
1047
s->prev=s->next=NULL;
1050
static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s)
1052
if ((s->next != NULL) && (s->prev != NULL))
1053
SSL_SESSION_list_remove(ctx,s);
1055
if (ctx->session_cache_head == NULL)
1057
ctx->session_cache_head=s;
1058
ctx->session_cache_tail=s;
1059
s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
1060
s->next=(SSL_SESSION *)&(ctx->session_cache_tail);
1064
s->next=ctx->session_cache_head;
1066
s->prev=(SSL_SESSION *)&(ctx->session_cache_head);
1067
ctx->session_cache_head=s;
1071
void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
1072
int (*cb)(struct ssl_st *ssl,SSL_SESSION *sess))
1074
ctx->new_session_cb=cb;
1077
int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess)
1079
return ctx->new_session_cb;
1082
void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
1083
void (*cb)(SSL_CTX *ctx,SSL_SESSION *sess))
1085
ctx->remove_session_cb=cb;
1088
void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx,SSL_SESSION *sess)
1090
return ctx->remove_session_cb;
1093
void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx,
1094
SSL_SESSION *(*cb)(struct ssl_st *ssl,
1095
unsigned char *data,int len,int *copy))
1097
ctx->get_session_cb=cb;
1100
SSL_SESSION * (*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl,
1101
unsigned char *data,int len,int *copy)
1103
return ctx->get_session_cb;
1106
void SSL_CTX_set_info_callback(SSL_CTX *ctx,
1107
void (*cb)(const SSL *ssl,int type,int val))
1109
ctx->info_callback=cb;
1112
void (*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl,int type,int val)
1114
return ctx->info_callback;
1117
void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
1118
int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey))
1120
ctx->client_cert_cb=cb;
1123
int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509 , EVP_PKEY **pkey)
1125
return ctx->client_cert_cb;
1128
#ifndef OPENSSL_NO_ENGINE
1129
int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e)
1131
if (!ENGINE_init(e))
1133
SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB);
1136
if(!ENGINE_get_ssl_client_cert_function(e))
1138
SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, SSL_R_NO_CLIENT_CERT_METHOD);
1142
ctx->client_cert_engine = e;
1147
void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
1148
int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len))
1150
ctx->app_gen_cookie_cb=cb;
1153
void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
1154
int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int cookie_len))
1156
ctx->app_verify_cookie_cb=cb;
1159
IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION)
added
removed
ssl/ssl_sess.c
