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diff --git a/src/lib/libssl/ssl_sess.c b/src/lib/libssl/ssl_sess.c
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1/* $OpenBSD: ssl_sess.c,v 1.129 2025/03/09 15:53:36 tb Exp $ */
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 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved.
60 *
61 * Redistribution and use in source and binary forms, with or without
62 * modification, are permitted provided that the following conditions
63 * are met:
64 *
65 * 1. Redistributions of source code must retain the above copyright
66 * notice, this list of conditions and the following disclaimer.
67 *
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
71 * distribution.
72 *
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/)"
77 *
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.
82 *
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.
86 *
87 * 6. Redistributions of any form whatsoever must retain the following
88 * acknowledgment:
89 * "This product includes software developed by the OpenSSL Project
90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
91 *
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 * ====================================================================
105 *
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).
109 *
110 */
111/* ====================================================================
112 * Copyright 2005 Nokia. All rights reserved.
113 *
114 * The portions of the attached software ("Contribution") is developed by
115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source
116 * license.
117 *
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.
121 *
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.
125 *
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.
130 *
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
135 * OTHERWISE.
136 */
137
138#include <openssl/lhash.h>
139#include <openssl/opensslconf.h>
140
141#include "ssl_local.h"
142
143static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s);
144static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s);
145static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck);
146
147/* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */
148SSL_SESSION *
149SSL_get_session(const SSL *ssl)
150{
151 return (ssl->session);
152}
153LSSL_ALIAS(SSL_get_session);
154
155/* variant of SSL_get_session: caller really gets something */
156SSL_SESSION *
157SSL_get1_session(SSL *ssl)
158{
159 SSL_SESSION *sess;
160
161 /*
162 * Need to lock this all up rather than just use CRYPTO_add so that
163 * somebody doesn't free ssl->session between when we check it's
164 * non-null and when we up the reference count.
165 */
166 CRYPTO_w_lock(CRYPTO_LOCK_SSL_SESSION);
167 sess = ssl->session;
168 if (sess)
169 sess->references++;
170 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_SESSION);
171
172 return (sess);
173}
174LSSL_ALIAS(SSL_get1_session);
175
176int
177SSL_SESSION_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
178 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
179{
180 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_SSL_SESSION,
181 argl, argp, new_func, dup_func, free_func);
182}
183LSSL_ALIAS(SSL_SESSION_get_ex_new_index);
184
185int
186SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg)
187{
188 return (CRYPTO_set_ex_data(&s->ex_data, idx, arg));
189}
190LSSL_ALIAS(SSL_SESSION_set_ex_data);
191
192void *
193SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx)
194{
195 return (CRYPTO_get_ex_data(&s->ex_data, idx));
196}
197LSSL_ALIAS(SSL_SESSION_get_ex_data);
198
199uint32_t
200SSL_SESSION_get_max_early_data(const SSL_SESSION *s)
201{
202 return 0;
203}
204LSSL_ALIAS(SSL_SESSION_get_max_early_data);
205
206int
207SSL_SESSION_set_max_early_data(SSL_SESSION *s, uint32_t max_early_data)
208{
209 return 1;
210}
211LSSL_ALIAS(SSL_SESSION_set_max_early_data);
212
213SSL_SESSION *
214SSL_SESSION_new(void)
215{
216 SSL_SESSION *ss;
217
218 if (!OPENSSL_init_ssl(0, NULL)) {
219 SSLerrorx(SSL_R_LIBRARY_BUG);
220 return(NULL);
221 }
222
223 if ((ss = calloc(1, sizeof(*ss))) == NULL) {
224 SSLerrorx(ERR_R_MALLOC_FAILURE);
225 return (NULL);
226 }
227
228 ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */
229 ss->references = 1;
230 ss->timeout = 60 * 5 + 4; /* 5 minutes 4 seconds timeout by default */
231 ss->time = time(NULL);
232 ss->prev = NULL;
233 ss->next = NULL;
234 ss->tlsext_hostname = NULL;
235
236 ss->peer_cert_type = -1;
237
238 ss->tlsext_ecpointformatlist_length = 0;
239 ss->tlsext_ecpointformatlist = NULL;
240 ss->tlsext_supportedgroups_length = 0;
241 ss->tlsext_supportedgroups = NULL;
242
243 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
244
245 return (ss);
246}
247LSSL_ALIAS(SSL_SESSION_new);
248
249SSL_SESSION *
250ssl_session_dup(SSL_SESSION *sess, int include_ticket)
251{
252 SSL_SESSION *copy;
253 CBS cbs;
254
255 if ((copy = calloc(1, sizeof(*copy))) == NULL) {
256 SSLerrorx(ERR_R_MALLOC_FAILURE);
257 goto err;
258 }
259
260 copy->ssl_version = sess->ssl_version;
261
262 CBS_init(&cbs, sess->master_key, sess->master_key_length);
263 if (!CBS_write_bytes(&cbs, copy->master_key, sizeof(copy->master_key),
264 &copy->master_key_length))
265 goto err;
266
267 CBS_init(&cbs, sess->session_id, sess->session_id_length);
268 if (!CBS_write_bytes(&cbs, copy->session_id, sizeof(copy->session_id),
269 &copy->session_id_length))
270 goto err;
271
272 CBS_init(&cbs, sess->sid_ctx, sess->sid_ctx_length);
273 if (!CBS_write_bytes(&cbs, copy->sid_ctx, sizeof(copy->sid_ctx),
274 &copy->sid_ctx_length))
275 goto err;
276
277 if (sess->peer_cert != NULL) {
278 if (!X509_up_ref(sess->peer_cert))
279 goto err;
280 copy->peer_cert = sess->peer_cert;
281 }
282 copy->peer_cert_type = sess->peer_cert_type;
283
284 copy->verify_result = sess->verify_result;
285
286 copy->timeout = sess->timeout;
287 copy->time = sess->time;
288 copy->references = 1;
289
290 copy->cipher_value = sess->cipher_value;
291
292 if (sess->tlsext_hostname != NULL) {
293 copy->tlsext_hostname = strdup(sess->tlsext_hostname);
294 if (copy->tlsext_hostname == NULL)
295 goto err;
296 }
297
298 if (include_ticket) {
299 CBS_init(&cbs, sess->tlsext_tick, sess->tlsext_ticklen);
300 if (!CBS_stow(&cbs, &copy->tlsext_tick, &copy->tlsext_ticklen))
301 goto err;
302 copy->tlsext_tick_lifetime_hint =
303 sess->tlsext_tick_lifetime_hint;
304
305 /*
306 * XXX - copy sess->resumption_master_secret and all other
307 * TLSv1.3 info here.
308 */
309 }
310
311 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, copy,
312 &copy->ex_data))
313 goto err;
314
315 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, &copy->ex_data,
316 &sess->ex_data))
317 goto err;
318
319 /* Omit prev/next: the new session gets its own slot in the cache. */
320
321 copy->not_resumable = sess->not_resumable;
322
323 CBS_init(&cbs, sess->tlsext_ecpointformatlist,
324 sess->tlsext_ecpointformatlist_length);
325 if (!CBS_stow(&cbs, &copy->tlsext_ecpointformatlist,
326 &copy->tlsext_ecpointformatlist_length))
327 goto err;
328
329 if (sess->tlsext_supportedgroups != NULL) {
330 if ((copy->tlsext_supportedgroups = calloc(sizeof(uint16_t),
331 sess->tlsext_supportedgroups_length)) == NULL)
332 goto err;
333 memcpy(copy->tlsext_supportedgroups,
334 sess->tlsext_supportedgroups,
335 sizeof(uint16_t) * sess->tlsext_supportedgroups_length);
336 copy->tlsext_supportedgroups_length =
337 sess->tlsext_supportedgroups_length;
338 }
339
340 return copy;
341
342 err:
343 SSL_SESSION_free(copy);
344
345 return NULL;
346}
347
348const unsigned char *
349SSL_SESSION_get_id(const SSL_SESSION *ss, unsigned int *len)
350{
351 if (len != NULL)
352 *len = (unsigned int)ss->session_id_length;
353 return ss->session_id;
354}
355LSSL_ALIAS(SSL_SESSION_get_id);
356
357const unsigned char *
358SSL_SESSION_get0_id_context(const SSL_SESSION *ss, unsigned int *len)
359{
360 if (len != NULL)
361 *len = (unsigned int)ss->sid_ctx_length;
362 return ss->sid_ctx;
363}
364LSSL_ALIAS(SSL_SESSION_get0_id_context);
365
366unsigned int
367SSL_SESSION_get_compress_id(const SSL_SESSION *ss)
368{
369 return 0;
370}
371LSSL_ALIAS(SSL_SESSION_get_compress_id);
372
373unsigned long
374SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s)
375{
376 return s->tlsext_tick_lifetime_hint;
377}
378LSSL_ALIAS(SSL_SESSION_get_ticket_lifetime_hint);
379
380int
381SSL_SESSION_has_ticket(const SSL_SESSION *s)
382{
383 return (s->tlsext_ticklen > 0) ? 1 : 0;
384}
385LSSL_ALIAS(SSL_SESSION_has_ticket);
386
387/*
388 * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling
389 * the ID with random gunk repeatedly until we have no conflict is going to
390 * complete in one iteration pretty much "most" of the time (btw:
391 * understatement). So, if it takes us 10 iterations and we still can't avoid
392 * a conflict - well that's a reasonable point to call it quits. Either the
393 * arc4random code is broken or someone is trying to open roughly very close to
394 * 2^128 (or 2^256) SSL sessions to our server. How you might store that many
395 * sessions is perhaps a more interesting question...
396 */
397
398#define MAX_SESS_ID_ATTEMPTS 10
399
400static int
401def_generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len)
402{
403 unsigned int retry = 0;
404
405 do {
406 arc4random_buf(id, *id_len);
407 } while (SSL_has_matching_session_id(ssl, id, *id_len) &&
408 (++retry < MAX_SESS_ID_ATTEMPTS));
409
410 if (retry < MAX_SESS_ID_ATTEMPTS)
411 return 1;
412
413 /* else - woops a session_id match */
414 /* XXX We should also check the external cache --
415 * but the probability of a collision is negligible, and
416 * we could not prevent the concurrent creation of sessions
417 * with identical IDs since we currently don't have means
418 * to atomically check whether a session ID already exists
419 * and make a reservation for it if it does not
420 * (this problem applies to the internal cache as well).
421 */
422 return 0;
423}
424
425int
426ssl_get_new_session(SSL *s, int session)
427{
428 unsigned int tmp;
429 SSL_SESSION *ss = NULL;
430 GEN_SESSION_CB cb = def_generate_session_id;
431
432 /* This gets used by clients and servers. */
433
434 if ((ss = SSL_SESSION_new()) == NULL)
435 return (0);
436
437 /* If the context has a default timeout, use it */
438 if (s->session_ctx->session_timeout == 0)
439 ss->timeout = SSL_get_default_timeout(s);
440 else
441 ss->timeout = s->session_ctx->session_timeout;
442
443 if (s->session != NULL) {
444 SSL_SESSION_free(s->session);
445 s->session = NULL;
446 }
447
448 if (session) {
449 switch (s->version) {
450 case TLS1_VERSION:
451 case TLS1_1_VERSION:
452 case TLS1_2_VERSION:
453 case DTLS1_VERSION:
454 case DTLS1_2_VERSION:
455 ss->ssl_version = s->version;
456 ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH;
457 break;
458 default:
459 SSLerror(s, SSL_R_UNSUPPORTED_SSL_VERSION);
460 SSL_SESSION_free(ss);
461 return (0);
462 }
463
464 /* If RFC4507 ticket use empty session ID. */
465 if (s->tlsext_ticket_expected) {
466 ss->session_id_length = 0;
467 goto sess_id_done;
468 }
469
470 /* Choose which callback will set the session ID. */
471 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
472 if (s->generate_session_id)
473 cb = s->generate_session_id;
474 else if (s->session_ctx->generate_session_id)
475 cb = s->session_ctx->generate_session_id;
476 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
477
478 /* Choose a session ID. */
479 tmp = ss->session_id_length;
480 if (!cb(s, ss->session_id, &tmp)) {
481 /* The callback failed */
482 SSLerror(s, SSL_R_SSL_SESSION_ID_CALLBACK_FAILED);
483 SSL_SESSION_free(ss);
484 return (0);
485 }
486
487 /*
488 * Don't allow the callback to set the session length to zero.
489 * nor set it higher than it was.
490 */
491 if (tmp == 0 || tmp > ss->session_id_length) {
492 /* The callback set an illegal length */
493 SSLerror(s, SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH);
494 SSL_SESSION_free(ss);
495 return (0);
496 }
497 ss->session_id_length = tmp;
498
499 /* Finally, check for a conflict. */
500 if (SSL_has_matching_session_id(s, ss->session_id,
501 ss->session_id_length)) {
502 SSLerror(s, SSL_R_SSL_SESSION_ID_CONFLICT);
503 SSL_SESSION_free(ss);
504 return (0);
505 }
506
507 sess_id_done:
508 if (s->tlsext_hostname) {
509 ss->tlsext_hostname = strdup(s->tlsext_hostname);
510 if (ss->tlsext_hostname == NULL) {
511 SSLerror(s, ERR_R_INTERNAL_ERROR);
512 SSL_SESSION_free(ss);
513 return 0;
514 }
515 }
516 } else {
517 ss->session_id_length = 0;
518 }
519
520 if (s->sid_ctx_length > sizeof ss->sid_ctx) {
521 SSLerror(s, ERR_R_INTERNAL_ERROR);
522 SSL_SESSION_free(ss);
523 return 0;
524 }
525
526 memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length);
527 ss->sid_ctx_length = s->sid_ctx_length;
528 s->session = ss;
529 ss->ssl_version = s->version;
530 ss->verify_result = X509_V_OK;
531
532 return (1);
533}
534
535static SSL_SESSION *
536ssl_session_from_cache(SSL *s, CBS *session_id)
537{
538 SSL_SESSION *sess;
539 SSL_SESSION data;
540
541 if ((s->session_ctx->session_cache_mode &
542 SSL_SESS_CACHE_NO_INTERNAL_LOOKUP))
543 return NULL;
544
545 memset(&data, 0, sizeof(data));
546
547 data.ssl_version = s->version;
548
549 if (!CBS_write_bytes(session_id, data.session_id,
550 sizeof(data.session_id), &data.session_id_length))
551 return NULL;
552
553 CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
554 sess = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data);
555 if (sess != NULL)
556 CRYPTO_add(&sess->references, 1, CRYPTO_LOCK_SSL_SESSION);
557 CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
558
559 if (sess == NULL)
560 s->session_ctx->stats.sess_miss++;
561
562 return sess;
563}
564
565static SSL_SESSION *
566ssl_session_from_callback(SSL *s, CBS *session_id)
567{
568 SSL_SESSION *sess;
569 int copy;
570
571 if (s->session_ctx->get_session_cb == NULL)
572 return NULL;
573
574 copy = 1;
575 if ((sess = s->session_ctx->get_session_cb(s,
576 CBS_data(session_id), CBS_len(session_id), &copy)) == NULL)
577 return NULL;
578 /*
579 * The copy handler may have set copy == 0 to indicate that the session
580 * structures are shared between threads and that it handles the
581 * reference count itself. If it didn't set copy to zero, we must
582 * increment the reference count.
583 */
584 if (copy)
585 CRYPTO_add(&sess->references, 1, CRYPTO_LOCK_SSL_SESSION);
586
587 s->session_ctx->stats.sess_cb_hit++;
588
589 /* Add the externally cached session to the internal cache as well. */
590 if (!(s->session_ctx->session_cache_mode &
591 SSL_SESS_CACHE_NO_INTERNAL_STORE)) {
592 /*
593 * The following should not return 1,
594 * otherwise, things are very strange.
595 */
596 SSL_CTX_add_session(s->session_ctx, sess);
597 }
598
599 return sess;
600}
601
602static SSL_SESSION *
603ssl_session_by_id(SSL *s, CBS *session_id)
604{
605 SSL_SESSION *sess;
606
607 if (CBS_len(session_id) == 0)
608 return NULL;
609
610 if ((sess = ssl_session_from_cache(s, session_id)) == NULL)
611 sess = ssl_session_from_callback(s, session_id);
612
613 return sess;
614}
615
616/*
617 * ssl_get_prev_session attempts to find an SSL_SESSION to be used to resume
618 * this connection. It is only called by servers.
619 *
620 * session_id: points at the session ID in the ClientHello. This code will
621 * read past the end of this in order to parse out the session ticket
622 * extension, if any.
623 * ext_block: a CBS for the ClientHello extensions block.
624 * alert: alert that the caller should send in case of failure.
625 *
626 * Returns:
627 * -1: error
628 * 0: a session may have been found.
629 *
630 * Side effects:
631 * - If a session is found then s->session is pointed at it (after freeing
632 * an existing session if need be) and s->verify_result is set from the
633 * session.
634 * - For both new and resumed sessions, s->tlsext_ticket_expected
635 * indicates whether the server should issue a new session ticket or not.
636 */
637int
638ssl_get_prev_session(SSL *s, CBS *session_id, CBS *ext_block, int *alert)
639{
640 SSL_SESSION *sess = NULL;
641 int alert_desc = SSL_AD_INTERNAL_ERROR, fatal = 0;
642 int ticket_decrypted = 0;
643
644 /* This is used only by servers. */
645
646 if (CBS_len(session_id) > SSL_MAX_SSL_SESSION_ID_LENGTH)
647 goto err;
648
649 /* Sets s->tlsext_ticket_expected. */
650 switch (tls1_process_ticket(s, ext_block, &alert_desc, &sess)) {
651 case TLS1_TICKET_FATAL_ERROR:
652 fatal = 1;
653 goto err;
654 case TLS1_TICKET_NONE:
655 case TLS1_TICKET_EMPTY:
656 if ((sess = ssl_session_by_id(s, session_id)) == NULL)
657 goto err;
658 break;
659 case TLS1_TICKET_NOT_DECRYPTED:
660 goto err;
661 case TLS1_TICKET_DECRYPTED:
662 ticket_decrypted = 1;
663
664 /*
665 * The session ID is used by some clients to detect that the
666 * ticket has been accepted so we copy it into sess.
667 */
668 if (!CBS_write_bytes(session_id, sess->session_id,
669 sizeof(sess->session_id), &sess->session_id_length)) {
670 fatal = 1;
671 goto err;
672 }
673 break;
674 default:
675 SSLerror(s, ERR_R_INTERNAL_ERROR);
676 fatal = 1;
677 goto err;
678 }
679
680 /* Now sess is non-NULL and we own one of its reference counts. */
681
682 if (sess->sid_ctx_length != s->sid_ctx_length ||
683 timingsafe_memcmp(sess->sid_ctx, s->sid_ctx,
684 sess->sid_ctx_length) != 0) {
685 /*
686 * We have the session requested by the client, but we don't
687 * want to use it in this context. Treat it like a cache miss.
688 */
689 goto err;
690 }
691
692 if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) {
693 /*
694 * We can't be sure if this session is being used out of
695 * context, which is especially important for SSL_VERIFY_PEER.
696 * The application should have used
697 * SSL[_CTX]_set_session_id_context.
698 *
699 * For this error case, we generate an error instead of treating
700 * the event like a cache miss (otherwise it would be easy for
701 * applications to effectively disable the session cache by
702 * accident without anyone noticing).
703 */
704 SSLerror(s, SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED);
705 fatal = 1;
706 goto err;
707 }
708
709 if (sess->timeout < (time(NULL) - sess->time)) {
710 s->session_ctx->stats.sess_timeout++;
711 if (!ticket_decrypted) {
712 /* The session was from the cache, so remove it. */
713 SSL_CTX_remove_session(s->session_ctx, sess);
714 }
715 goto err;
716 }
717
718 s->session_ctx->stats.sess_hit++;
719
720 SSL_SESSION_free(s->session);
721 s->session = sess;
722 s->verify_result = s->session->verify_result;
723
724 return 1;
725
726 err:
727 SSL_SESSION_free(sess);
728 if (ticket_decrypted) {
729 /*
730 * The session was from a ticket. Issue a ticket for the new
731 * session.
732 */
733 s->tlsext_ticket_expected = 1;
734 }
735 if (fatal) {
736 *alert = alert_desc;
737 return -1;
738 }
739 return 0;
740}
741
742int
743SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c)
744{
745 int ret = 0;
746 SSL_SESSION *s;
747
748 /*
749 * Add just 1 reference count for the SSL_CTX's session cache
750 * even though it has two ways of access: each session is in a
751 * doubly linked list and an lhash.
752 */
753 CRYPTO_add(&c->references, 1, CRYPTO_LOCK_SSL_SESSION);
754
755 /*
756 * If session c is in already in cache, we take back the increment
757 * later.
758 */
759 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
760 s = lh_SSL_SESSION_insert(ctx->sessions, c);
761
762 /*
763 * s != NULL iff we already had a session with the given PID.
764 * In this case, s == c should hold (then we did not really modify
765 * ctx->sessions), or we're in trouble.
766 */
767 if (s != NULL && s != c) {
768 /* We *are* in trouble ... */
769 SSL_SESSION_list_remove(ctx, s);
770 SSL_SESSION_free(s);
771 /*
772 * ... so pretend the other session did not exist in cache
773 * (we cannot handle two SSL_SESSION structures with identical
774 * session ID in the same cache, which could happen e.g. when
775 * two threads concurrently obtain the same session from an
776 * external cache).
777 */
778 s = NULL;
779 }
780
781 /* Put at the head of the queue unless it is already in the cache */
782 if (s == NULL)
783 SSL_SESSION_list_add(ctx, c);
784
785 if (s != NULL) {
786 /*
787 * existing cache entry -- decrement previously incremented
788 * reference count because it already takes into account the
789 * cache.
790 */
791 SSL_SESSION_free(s); /* s == c */
792 ret = 0;
793 } else {
794 /*
795 * New cache entry -- remove old ones if cache has become
796 * too large.
797 */
798
799 ret = 1;
800
801 if (SSL_CTX_sess_get_cache_size(ctx) > 0) {
802 while (SSL_CTX_sess_number(ctx) >
803 SSL_CTX_sess_get_cache_size(ctx)) {
804 if (!remove_session_lock(ctx,
805 ctx->session_cache_tail, 0))
806 break;
807 else
808 ctx->stats.sess_cache_full++;
809 }
810 }
811 }
812 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
813 return (ret);
814}
815LSSL_ALIAS(SSL_CTX_add_session);
816
817int
818SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c)
819{
820 return remove_session_lock(ctx, c, 1);
821}
822LSSL_ALIAS(SSL_CTX_remove_session);
823
824static int
825remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck)
826{
827 SSL_SESSION *r;
828 int ret = 0;
829
830 if (c == NULL || c->session_id_length == 0)
831 return 0;
832
833 if (lck)
834 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
835 if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) == c) {
836 ret = 1;
837 r = lh_SSL_SESSION_delete(ctx->sessions, c);
838 SSL_SESSION_list_remove(ctx, c);
839 }
840 if (lck)
841 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
842
843 if (ret) {
844 r->not_resumable = 1;
845 if (ctx->remove_session_cb != NULL)
846 ctx->remove_session_cb(ctx, r);
847 SSL_SESSION_free(r);
848 }
849
850 return ret;
851}
852
853void
854SSL_SESSION_free(SSL_SESSION *ss)
855{
856 int i;
857
858 if (ss == NULL)
859 return;
860
861 i = CRYPTO_add(&ss->references, -1, CRYPTO_LOCK_SSL_SESSION);
862 if (i > 0)
863 return;
864
865 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data);
866
867 explicit_bzero(ss->master_key, sizeof ss->master_key);
868 explicit_bzero(ss->session_id, sizeof ss->session_id);
869
870 X509_free(ss->peer_cert);
871
872 free(ss->tlsext_hostname);
873 free(ss->tlsext_tick);
874 free(ss->tlsext_ecpointformatlist);
875 free(ss->tlsext_supportedgroups);
876
877 tls13_secret_cleanup(&ss->resumption_master_secret);
878
879 freezero(ss, sizeof(*ss));
880}
881LSSL_ALIAS(SSL_SESSION_free);
882
883int
884SSL_SESSION_up_ref(SSL_SESSION *ss)
885{
886 return CRYPTO_add(&ss->references, 1, CRYPTO_LOCK_SSL_SESSION) > 1;
887}
888LSSL_ALIAS(SSL_SESSION_up_ref);
889
890int
891SSL_set_session(SSL *s, SSL_SESSION *session)
892{
893 const SSL_METHOD *method;
894
895 if (session == NULL) {
896 SSL_SESSION_free(s->session);
897 s->session = NULL;
898
899 return SSL_set_ssl_method(s, s->ctx->method);
900 }
901
902 if ((method = ssl_get_method(session->ssl_version)) == NULL) {
903 SSLerror(s, SSL_R_UNABLE_TO_FIND_SSL_METHOD);
904 return (0);
905 }
906
907 if (!SSL_set_ssl_method(s, method))
908 return (0);
909
910 CRYPTO_add(&session->references, 1, CRYPTO_LOCK_SSL_SESSION);
911 SSL_SESSION_free(s->session);
912 s->session = session;
913 s->verify_result = s->session->verify_result;
914
915 return (1);
916}
917LSSL_ALIAS(SSL_set_session);
918
919size_t
920SSL_SESSION_get_master_key(const SSL_SESSION *ss, unsigned char *out,
921 size_t max_out)
922{
923 size_t len = ss->master_key_length;
924
925 if (out == NULL)
926 return len;
927
928 if (len > max_out)
929 len = max_out;
930
931 memcpy(out, ss->master_key, len);
932
933 return len;
934}
935LSSL_ALIAS(SSL_SESSION_get_master_key);
936
937long
938SSL_SESSION_set_timeout(SSL_SESSION *s, long t)
939{
940 if (s == NULL)
941 return (0);
942 s->timeout = t;
943 return (1);
944}
945LSSL_ALIAS(SSL_SESSION_set_timeout);
946
947long
948SSL_SESSION_get_timeout(const SSL_SESSION *s)
949{
950 if (s == NULL)
951 return (0);
952 return (s->timeout);
953}
954LSSL_ALIAS(SSL_SESSION_get_timeout);
955
956/* XXX 2038 */
957long
958SSL_SESSION_get_time(const SSL_SESSION *s)
959{
960 if (s == NULL)
961 return (0);
962 return (s->time);
963}
964LSSL_ALIAS(SSL_SESSION_get_time);
965
966/* XXX 2038 */
967long
968SSL_SESSION_set_time(SSL_SESSION *s, long t)
969{
970 if (s == NULL)
971 return (0);
972 s->time = t;
973 return (t);
974}
975LSSL_ALIAS(SSL_SESSION_set_time);
976
977int
978SSL_SESSION_get_protocol_version(const SSL_SESSION *s)
979{
980 return s->ssl_version;
981}
982LSSL_ALIAS(SSL_SESSION_get_protocol_version);
983
984const SSL_CIPHER *
985SSL_SESSION_get0_cipher(const SSL_SESSION *s)
986{
987 return ssl3_get_cipher_by_value(s->cipher_value);
988}
989LSSL_ALIAS(SSL_SESSION_get0_cipher);
990
991X509 *
992SSL_SESSION_get0_peer(SSL_SESSION *s)
993{
994 return s->peer_cert;
995}
996LSSL_ALIAS(SSL_SESSION_get0_peer);
997
998int
999SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
1000 unsigned int sid_len)
1001{
1002 if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) {
1003 SSLerrorx(SSL_R_SSL_SESSION_ID_TOO_LONG);
1004 return 0;
1005 }
1006 s->session_id_length = sid_len;
1007 memmove(s->session_id, sid, sid_len);
1008 return 1;
1009}
1010LSSL_ALIAS(SSL_SESSION_set1_id);
1011
1012int
1013SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx,
1014 unsigned int sid_ctx_len)
1015{
1016 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
1017 SSLerrorx(SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
1018 return 0;
1019 }
1020 s->sid_ctx_length = sid_ctx_len;
1021 memcpy(s->sid_ctx, sid_ctx, sid_ctx_len);
1022
1023 return 1;
1024}
1025LSSL_ALIAS(SSL_SESSION_set1_id_context);
1026
1027int
1028SSL_SESSION_is_resumable(const SSL_SESSION *s)
1029{
1030 return 0;
1031}
1032LSSL_ALIAS(SSL_SESSION_is_resumable);
1033
1034long
1035SSL_CTX_set_timeout(SSL_CTX *s, long t)
1036{
1037 long l;
1038
1039 if (s == NULL)
1040 return (0);
1041 l = s->session_timeout;
1042 s->session_timeout = t;
1043
1044 return (l);
1045}
1046LSSL_ALIAS(SSL_CTX_set_timeout);
1047
1048long
1049SSL_CTX_get_timeout(const SSL_CTX *s)
1050{
1051 if (s == NULL)
1052 return (0);
1053 return (s->session_timeout);
1054}
1055LSSL_ALIAS(SSL_CTX_get_timeout);
1056
1057int
1058SSL_set_session_secret_cb(SSL *s, int (*tls_session_secret_cb)(SSL *s,
1059 void *secret, int *secret_len, STACK_OF(SSL_CIPHER) *peer_ciphers,
1060 const SSL_CIPHER **cipher, void *arg), void *arg)
1061{
1062 if (s == NULL)
1063 return (0);
1064 s->tls_session_secret_cb = tls_session_secret_cb;
1065 s->tls_session_secret_cb_arg = arg;
1066 return (1);
1067}
1068LSSL_ALIAS(SSL_set_session_secret_cb);
1069
1070int
1071SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb,
1072 void *arg)
1073{
1074 if (s == NULL)
1075 return (0);
1076 s->tls_session_ticket_ext_cb = cb;
1077 s->tls_session_ticket_ext_cb_arg = arg;
1078 return (1);
1079}
1080LSSL_ALIAS(SSL_set_session_ticket_ext_cb);
1081
1082int
1083SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len)
1084{
1085 if (s->version >= TLS1_VERSION) {
1086 free(s->tlsext_session_ticket);
1087 s->tlsext_session_ticket =
1088 malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len);
1089 if (!s->tlsext_session_ticket) {
1090 SSLerror(s, ERR_R_MALLOC_FAILURE);
1091 return 0;
1092 }
1093
1094 if (ext_data) {
1095 s->tlsext_session_ticket->length = ext_len;
1096 s->tlsext_session_ticket->data =
1097 s->tlsext_session_ticket + 1;
1098 memcpy(s->tlsext_session_ticket->data,
1099 ext_data, ext_len);
1100 } else {
1101 s->tlsext_session_ticket->length = 0;
1102 s->tlsext_session_ticket->data = NULL;
1103 }
1104
1105 return 1;
1106 }
1107
1108 return 0;
1109}
1110LSSL_ALIAS(SSL_set_session_ticket_ext);
1111
1112typedef struct timeout_param_st {
1113 SSL_CTX *ctx;
1114 long time;
1115 struct lhash_st_SSL_SESSION *cache;
1116} TIMEOUT_PARAM;
1117
1118static void
1119timeout_doall_arg(SSL_SESSION *s, TIMEOUT_PARAM *p)
1120{
1121 if ((p->time == 0) || (p->time > (s->time + s->timeout))) {
1122 /* timeout */
1123 /* The reason we don't call SSL_CTX_remove_session() is to
1124 * save on locking overhead */
1125 (void)lh_SSL_SESSION_delete(p->cache, s);
1126 SSL_SESSION_list_remove(p->ctx, s);
1127 s->not_resumable = 1;
1128 if (p->ctx->remove_session_cb != NULL)
1129 p->ctx->remove_session_cb(p->ctx, s);
1130 SSL_SESSION_free(s);
1131 }
1132}
1133
1134static void
1135timeout_LHASH_DOALL_ARG(void *arg1, void *arg2)
1136{
1137 SSL_SESSION *a = arg1;
1138 TIMEOUT_PARAM *b = arg2;
1139
1140 timeout_doall_arg(a, b);
1141}
1142
1143/* XXX 2038 */
1144void
1145SSL_CTX_flush_sessions(SSL_CTX *s, long t)
1146{
1147 TIMEOUT_PARAM tp;
1148
1149 tp.ctx = s;
1150 tp.cache = s->sessions;
1151 if (tp.cache == NULL)
1152 return;
1153 tp.time = t;
1154
1155 CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
1156 lh_SSL_SESSION_doall_arg(tp.cache, timeout_LHASH_DOALL_ARG,
1157 TIMEOUT_PARAM, &tp);
1158 CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
1159}
1160LSSL_ALIAS(SSL_CTX_flush_sessions);
1161
1162int
1163ssl_clear_bad_session(SSL *s)
1164{
1165 if ((s->session != NULL) && !(s->shutdown & SSL_SENT_SHUTDOWN) &&
1166 !(SSL_in_init(s) || SSL_in_before(s))) {
1167 SSL_CTX_remove_session(s->ctx, s->session);
1168 return (1);
1169 } else
1170 return (0);
1171}
1172
1173/* locked by SSL_CTX in the calling function */
1174static void
1175SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s)
1176{
1177 if (s->next == NULL || s->prev == NULL)
1178 return;
1179
1180 if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) {
1181 /* last element in list */
1182 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) {
1183 /* only one element in list */
1184 ctx->session_cache_head = NULL;
1185 ctx->session_cache_tail = NULL;
1186 } else {
1187 ctx->session_cache_tail = s->prev;
1188 s->prev->next =
1189 (SSL_SESSION *)&(ctx->session_cache_tail);
1190 }
1191 } else {
1192 if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) {
1193 /* first element in list */
1194 ctx->session_cache_head = s->next;
1195 s->next->prev =
1196 (SSL_SESSION *)&(ctx->session_cache_head);
1197 } else {
1198 /* middle of list */
1199 s->next->prev = s->prev;
1200 s->prev->next = s->next;
1201 }
1202 }
1203 s->prev = s->next = NULL;
1204}
1205
1206static void
1207SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s)
1208{
1209 if (s->next != NULL && s->prev != NULL)
1210 SSL_SESSION_list_remove(ctx, s);
1211
1212 if (ctx->session_cache_head == NULL) {
1213 ctx->session_cache_head = s;
1214 ctx->session_cache_tail = s;
1215 s->prev = (SSL_SESSION *)&(ctx->session_cache_head);
1216 s->next = (SSL_SESSION *)&(ctx->session_cache_tail);
1217 } else {
1218 s->next = ctx->session_cache_head;
1219 s->next->prev = s;
1220 s->prev = (SSL_SESSION *)&(ctx->session_cache_head);
1221 ctx->session_cache_head = s;
1222 }
1223}
1224
1225void
1226SSL_CTX_sess_set_new_cb(SSL_CTX *ctx,
1227 int (*cb)(struct ssl_st *ssl, SSL_SESSION *sess)) {
1228 ctx->new_session_cb = cb;
1229}
1230LSSL_ALIAS(SSL_CTX_sess_set_new_cb);
1231
1232int
1233(*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx))(SSL *ssl, SSL_SESSION *sess)
1234{
1235 return ctx->new_session_cb;
1236}
1237LSSL_ALIAS(SSL_CTX_sess_get_new_cb);
1238
1239void
1240SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx,
1241 void (*cb)(SSL_CTX *ctx, SSL_SESSION *sess))
1242{
1243 ctx->remove_session_cb = cb;
1244}
1245LSSL_ALIAS(SSL_CTX_sess_set_remove_cb);
1246
1247void
1248(*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx))(SSL_CTX * ctx, SSL_SESSION *sess)
1249{
1250 return ctx->remove_session_cb;
1251}
1252LSSL_ALIAS(SSL_CTX_sess_get_remove_cb);
1253
1254void
1255SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, SSL_SESSION *(*cb)(struct ssl_st *ssl,
1256 const unsigned char *data, int len, int *copy))
1257{
1258 ctx->get_session_cb = cb;
1259}
1260LSSL_ALIAS(SSL_CTX_sess_set_get_cb);
1261
1262SSL_SESSION *
1263(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx))(SSL *ssl, const unsigned char *data,
1264 int len, int *copy)
1265{
1266 return ctx->get_session_cb;
1267}
1268LSSL_ALIAS(SSL_CTX_sess_get_get_cb);
1269
1270void
1271SSL_CTX_set_info_callback(SSL_CTX *ctx,
1272 void (*cb)(const SSL *ssl, int type, int val))
1273{
1274 ctx->info_callback = cb;
1275}
1276LSSL_ALIAS(SSL_CTX_set_info_callback);
1277
1278void
1279(*SSL_CTX_get_info_callback(SSL_CTX *ctx))(const SSL *ssl, int type, int val)
1280{
1281 return ctx->info_callback;
1282}
1283LSSL_ALIAS(SSL_CTX_get_info_callback);
1284
1285void
1286SSL_CTX_set_client_cert_cb(SSL_CTX *ctx,
1287 int (*cb)(SSL *ssl, X509 **x509, EVP_PKEY **pkey))
1288{
1289 ctx->client_cert_cb = cb;
1290}
1291LSSL_ALIAS(SSL_CTX_set_client_cert_cb);
1292
1293int
1294(*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx))(SSL * ssl, X509 ** x509,
1295 EVP_PKEY **pkey)
1296{
1297 return ctx->client_cert_cb;
1298}
1299LSSL_ALIAS(SSL_CTX_get_client_cert_cb);
1300
1301void
1302SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx,
1303 int (*cb)(SSL *ssl, unsigned char *cookie, unsigned int *cookie_len))
1304{
1305 ctx->app_gen_cookie_cb = cb;
1306}
1307LSSL_ALIAS(SSL_CTX_set_cookie_generate_cb);
1308
1309void
1310SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx,
1311 int (*cb)(SSL *ssl, const unsigned char *cookie, unsigned int cookie_len))
1312{
1313 ctx->app_verify_cookie_cb = cb;
1314}
1315LSSL_ALIAS(SSL_CTX_set_cookie_verify_cb);
1316
1317int
1318PEM_write_SSL_SESSION(FILE *fp, SSL_SESSION *x)
1319{
1320 return PEM_ASN1_write((i2d_of_void *)i2d_SSL_SESSION,
1321 PEM_STRING_SSL_SESSION, fp, x, NULL, NULL, 0, NULL, NULL);
1322}
1323LSSL_ALIAS(PEM_write_SSL_SESSION);
1324
1325SSL_SESSION *
1326PEM_read_SSL_SESSION(FILE *fp, SSL_SESSION **x, pem_password_cb *cb, void *u)
1327{
1328 return PEM_ASN1_read((d2i_of_void *)d2i_SSL_SESSION,
1329 PEM_STRING_SSL_SESSION, fp, (void **)x, cb, u);
1330}
1331LSSL_ALIAS(PEM_read_SSL_SESSION);
1332
1333SSL_SESSION *
1334PEM_read_bio_SSL_SESSION(BIO *bp, SSL_SESSION **x, pem_password_cb *cb, void *u)
1335{
1336 return PEM_ASN1_read_bio((d2i_of_void *)d2i_SSL_SESSION,
1337 PEM_STRING_SSL_SESSION, bp, (void **)x, cb, u);
1338}
1339LSSL_ALIAS(PEM_read_bio_SSL_SESSION);
1340
1341int
1342PEM_write_bio_SSL_SESSION(BIO *bp, SSL_SESSION *x)
1343{
1344 return PEM_ASN1_write_bio((i2d_of_void *)i2d_SSL_SESSION,
1345 PEM_STRING_SSL_SESSION, bp, x, NULL, NULL, 0, NULL, NULL);
1346}
1347LSSL_ALIAS(PEM_write_bio_SSL_SESSION);
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-04-28 22:40:27 +0000