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846e33c7 | 1 | /* |
fecb3aae | 2 | * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved. |
c80149d9 | 3 | * Copyright 2005 Nokia. All rights reserved. |
f1fd4544 | 4 | * |
2c18d164 | 5 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
846e33c7 RS |
6 | * this file except in compliance with the License. You can obtain a copy |
7 | * in the file LICENSE in the source distribution or at | |
8 | * https://www.openssl.org/source/license.html | |
f1fd4544 | 9 | */ |
846e33c7 | 10 | |
650c6687 RB |
11 | #if defined(__TANDEM) && defined(_SPT_MODEL_) |
12 | # include <spthread.h> | |
13 | # include <spt_extensions.h> /* timeval */ | |
14 | #endif | |
d02b48c6 | 15 | #include <stdio.h> |
ec577822 | 16 | #include <openssl/rand.h> |
3c27208f | 17 | #include <openssl/engine.h> |
cd420b0b | 18 | #include "internal/refcount.h" |
6cc0b3c2 | 19 | #include "internal/cryptlib.h" |
706457b7 DMSP |
20 | #include "ssl_local.h" |
21 | #include "statem/statem_local.h" | |
d02b48c6 | 22 | |
58964a49 | 23 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); |
0f113f3e | 24 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s); |
801294f8 | 25 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); |
58964a49 | 26 | |
25959e04 TS |
27 | DEFINE_STACK_OF(SSL_SESSION) |
28 | ||
29 | __owur static int sess_timedout(time_t t, SSL_SESSION *ss) | |
30 | { | |
31 | /* if timeout overflowed, it can never timeout! */ | |
32 | if (ss->timeout_ovf) | |
33 | return 0; | |
34 | return t > ss->calc_timeout; | |
35 | } | |
36 | ||
37 | /* | |
38 | * Returns -1/0/+1 as other XXXcmp-type functions | |
39 | * Takes overflow of calculated timeout into consideration | |
40 | */ | |
41 | __owur static int timeoutcmp(SSL_SESSION *a, SSL_SESSION *b) | |
42 | { | |
43 | /* if only one overflowed, then it is greater */ | |
44 | if (a->timeout_ovf && !b->timeout_ovf) | |
45 | return 1; | |
46 | if (!a->timeout_ovf && b->timeout_ovf) | |
47 | return -1; | |
48 | /* No overflow, or both overflowed, so straight compare is safe */ | |
49 | if (a->calc_timeout < b->calc_timeout) | |
50 | return -1; | |
51 | if (a->calc_timeout > b->calc_timeout) | |
52 | return 1; | |
53 | return 0; | |
54 | } | |
55 | ||
56 | /* | |
57 | * Calculates effective timeout, saving overflow state | |
58 | * Locking must be done by the caller of this function | |
59 | */ | |
60 | void ssl_session_calculate_timeout(SSL_SESSION *ss) | |
61 | { | |
62 | /* Force positive timeout */ | |
63 | if (ss->timeout < 0) | |
64 | ss->timeout = 0; | |
65 | ss->calc_timeout = ss->time + ss->timeout; | |
66 | /* | |
67 | * |timeout| is always zero or positive, so the check for | |
68 | * overflow only needs to consider if |time| is positive | |
69 | */ | |
70 | ss->timeout_ovf = ss->time > 0 && ss->calc_timeout < ss->time; | |
71 | /* | |
72 | * N.B. Realistic overflow can only occur in our lifetimes on a | |
73 | * 32-bit machine in January 2038. | |
74 | * However, There are no controls to limit the |timeout| | |
75 | * value, except to keep it positive. | |
76 | */ | |
77 | } | |
78 | ||
e7a28df7 | 79 | /* |
e586eac8 MC |
80 | * SSL_get_session() and SSL_get1_session() are problematic in TLS1.3 because, |
81 | * unlike in earlier protocol versions, the session ticket may not have been | |
82 | * sent yet even though a handshake has finished. The session ticket data could | |
83 | * come in sometime later...or even change if multiple session ticket messages | |
84 | * are sent from the server. The preferred way for applications to obtain | |
85 | * a resumable session is to use SSL_CTX_sess_set_new_cb(). | |
e7a28df7 MC |
86 | */ |
87 | ||
0821bcd4 | 88 | SSL_SESSION *SSL_get_session(const SSL *ssl) |
52732b38 | 89 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ |
0f113f3e | 90 | { |
26a7d938 | 91 | return ssl->session; |
0f113f3e | 92 | } |
52732b38 BM |
93 | |
94 | SSL_SESSION *SSL_get1_session(SSL *ssl) | |
95 | /* variant of SSL_get_session: caller really gets something */ | |
0f113f3e MC |
96 | { |
97 | SSL_SESSION *sess; | |
98 | /* | |
99 | * Need to lock this all up rather than just use CRYPTO_add so that | |
100 | * somebody doesn't free ssl->session between when we check it's non-null | |
101 | * and when we up the reference count. | |
102 | */ | |
cd3f8c1b RS |
103 | if (!CRYPTO_THREAD_read_lock(ssl->lock)) |
104 | return NULL; | |
0f113f3e MC |
105 | sess = ssl->session; |
106 | if (sess) | |
16203f7b AG |
107 | SSL_SESSION_up_ref(sess); |
108 | CRYPTO_THREAD_unlock(ssl->lock); | |
109 | return sess; | |
0f113f3e MC |
110 | } |
111 | ||
6b691a5c | 112 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
0f113f3e | 113 | { |
26a7d938 | 114 | return CRYPTO_set_ex_data(&s->ex_data, idx, arg); |
0f113f3e | 115 | } |
58964a49 | 116 | |
0821bcd4 | 117 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) |
0f113f3e | 118 | { |
26a7d938 | 119 | return CRYPTO_get_ex_data(&s->ex_data, idx); |
0f113f3e | 120 | } |
58964a49 | 121 | |
6b691a5c | 122 | SSL_SESSION *SSL_SESSION_new(void) |
0f113f3e MC |
123 | { |
124 | SSL_SESSION *ss; | |
125 | ||
534a43ff MC |
126 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) |
127 | return NULL; | |
128 | ||
b51bce94 | 129 | ss = OPENSSL_zalloc(sizeof(*ss)); |
0f113f3e | 130 | if (ss == NULL) { |
6849b73c | 131 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
16203f7b | 132 | return NULL; |
0f113f3e | 133 | } |
0f113f3e MC |
134 | |
135 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ | |
136 | ss->references = 1; | |
137 | ss->timeout = 60 * 5 + 4; /* 5 minute timeout by default */ | |
25959e04 TS |
138 | ss->time = time(NULL); |
139 | ssl_session_calculate_timeout(ss); | |
16203f7b AG |
140 | ss->lock = CRYPTO_THREAD_lock_new(); |
141 | if (ss->lock == NULL) { | |
6849b73c | 142 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
16203f7b AG |
143 | OPENSSL_free(ss); |
144 | return NULL; | |
145 | } | |
146 | ||
25a807bc F |
147 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data)) { |
148 | CRYPTO_THREAD_lock_free(ss->lock); | |
149 | OPENSSL_free(ss); | |
150 | return NULL; | |
151 | } | |
16203f7b | 152 | return ss; |
0f113f3e | 153 | } |
d02b48c6 | 154 | |
9fdcc21f | 155 | SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src) |
07927bed MC |
156 | { |
157 | return ssl_session_dup(src, 1); | |
158 | } | |
159 | ||
98ece4ee MC |
160 | /* |
161 | * Create a new SSL_SESSION and duplicate the contents of |src| into it. If | |
162 | * ticket == 0 then no ticket information is duplicated, otherwise it is. | |
163 | */ | |
9fdcc21f | 164 | SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket) |
98ece4ee MC |
165 | { |
166 | SSL_SESSION *dest; | |
167 | ||
8ad36917 | 168 | dest = OPENSSL_malloc(sizeof(*dest)); |
98ece4ee MC |
169 | if (dest == NULL) { |
170 | goto err; | |
171 | } | |
172 | memcpy(dest, src, sizeof(*dest)); | |
173 | ||
708cf593 MC |
174 | /* |
175 | * Set the various pointers to NULL so that we can call SSL_SESSION_free in | |
176 | * the case of an error whilst halfway through constructing dest | |
177 | */ | |
178 | #ifndef OPENSSL_NO_PSK | |
179 | dest->psk_identity_hint = NULL; | |
180 | dest->psk_identity = NULL; | |
181 | #endif | |
aff8c126 | 182 | dest->ext.hostname = NULL; |
aff8c126 | 183 | dest->ext.tick = NULL; |
eed3ec90 | 184 | dest->ext.alpn_selected = NULL; |
708cf593 MC |
185 | #ifndef OPENSSL_NO_SRP |
186 | dest->srp_username = NULL; | |
187 | #endif | |
1ee21259 TS |
188 | dest->peer_chain = NULL; |
189 | dest->peer = NULL; | |
df0fed9a | 190 | dest->ticket_appdata = NULL; |
51598215 | 191 | memset(&dest->ex_data, 0, sizeof(dest->ex_data)); |
9b6a8254 | 192 | |
708cf593 MC |
193 | /* We deliberately don't copy the prev and next pointers */ |
194 | dest->prev = NULL; | |
195 | dest->next = NULL; | |
196 | ||
197 | dest->references = 1; | |
198 | ||
16203f7b AG |
199 | dest->lock = CRYPTO_THREAD_lock_new(); |
200 | if (dest->lock == NULL) | |
201 | goto err; | |
202 | ||
1ee21259 TS |
203 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, dest, &dest->ex_data)) |
204 | goto err; | |
205 | ||
206 | if (src->peer != NULL) { | |
207 | if (!X509_up_ref(src->peer)) | |
208 | goto err; | |
209 | dest->peer = src->peer; | |
210 | } | |
708cf593 | 211 | |
36f038f1 DSH |
212 | if (src->peer_chain != NULL) { |
213 | dest->peer_chain = X509_chain_up_ref(src->peer_chain); | |
214 | if (dest->peer_chain == NULL) | |
215 | goto err; | |
216 | } | |
98ece4ee MC |
217 | #ifndef OPENSSL_NO_PSK |
218 | if (src->psk_identity_hint) { | |
7644a9ae | 219 | dest->psk_identity_hint = OPENSSL_strdup(src->psk_identity_hint); |
98ece4ee MC |
220 | if (dest->psk_identity_hint == NULL) { |
221 | goto err; | |
222 | } | |
98ece4ee MC |
223 | } |
224 | if (src->psk_identity) { | |
7644a9ae | 225 | dest->psk_identity = OPENSSL_strdup(src->psk_identity); |
98ece4ee MC |
226 | if (dest->psk_identity == NULL) { |
227 | goto err; | |
228 | } | |
98ece4ee MC |
229 | } |
230 | #endif | |
231 | ||
98ece4ee | 232 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, |
a230b26e | 233 | &dest->ex_data, &src->ex_data)) { |
98ece4ee MC |
234 | goto err; |
235 | } | |
236 | ||
aff8c126 RS |
237 | if (src->ext.hostname) { |
238 | dest->ext.hostname = OPENSSL_strdup(src->ext.hostname); | |
239 | if (dest->ext.hostname == NULL) { | |
98ece4ee MC |
240 | goto err; |
241 | } | |
98ece4ee | 242 | } |
98ece4ee | 243 | |
1ee21259 | 244 | if (ticket != 0 && src->ext.tick != NULL) { |
aff8c126 RS |
245 | dest->ext.tick = |
246 | OPENSSL_memdup(src->ext.tick, src->ext.ticklen); | |
247 | if (dest->ext.tick == NULL) | |
98ece4ee | 248 | goto err; |
708cf593 | 249 | } else { |
aff8c126 RS |
250 | dest->ext.tick_lifetime_hint = 0; |
251 | dest->ext.ticklen = 0; | |
98ece4ee MC |
252 | } |
253 | ||
27232cc3 MC |
254 | if (src->ext.alpn_selected != NULL) { |
255 | dest->ext.alpn_selected = OPENSSL_memdup(src->ext.alpn_selected, | |
256 | src->ext.alpn_selected_len); | |
257 | if (dest->ext.alpn_selected == NULL) | |
eed3ec90 | 258 | goto err; |
eed3ec90 TS |
259 | } |
260 | ||
98ece4ee | 261 | #ifndef OPENSSL_NO_SRP |
98ece4ee | 262 | if (src->srp_username) { |
7644a9ae | 263 | dest->srp_username = OPENSSL_strdup(src->srp_username); |
98ece4ee MC |
264 | if (dest->srp_username == NULL) { |
265 | goto err; | |
266 | } | |
98ece4ee MC |
267 | } |
268 | #endif | |
269 | ||
df0fed9a TS |
270 | if (src->ticket_appdata != NULL) { |
271 | dest->ticket_appdata = | |
272 | OPENSSL_memdup(src->ticket_appdata, src->ticket_appdata_len); | |
273 | if (dest->ticket_appdata == NULL) | |
274 | goto err; | |
275 | } | |
276 | ||
98ece4ee | 277 | return dest; |
a230b26e | 278 | err: |
6849b73c | 279 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
98ece4ee MC |
280 | SSL_SESSION_free(dest); |
281 | return NULL; | |
282 | } | |
283 | ||
a230b26e | 284 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) |
0f113f3e MC |
285 | { |
286 | if (len) | |
348240c6 | 287 | *len = (unsigned int)s->session_id_length; |
0f113f3e MC |
288 | return s->session_id; |
289 | } | |
fddfc0af RG |
290 | const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s, |
291 | unsigned int *len) | |
292 | { | |
293 | if (len != NULL) | |
348240c6 | 294 | *len = (unsigned int)s->sid_ctx_length; |
fddfc0af RG |
295 | return s->sid_ctx; |
296 | } | |
4879ec7b | 297 | |
f9b0b452 | 298 | unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s) |
0f113f3e MC |
299 | { |
300 | return s->compress_meth; | |
301 | } | |
302 | ||
303 | /* | |
304 | * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling | |
305 | * the ID with random junk repeatedly until we have no conflict is going to | |
306 | * complete in one iteration pretty much "most" of the time (btw: | |
307 | * understatement). So, if it takes us 10 iterations and we still can't avoid | |
308 | * a conflict - well that's a reasonable point to call it quits. Either the | |
309 | * RAND code is broken or someone is trying to open roughly very close to | |
310 | * 2^256 SSL sessions to our server. How you might store that many sessions | |
311 | * is perhaps a more interesting question ... | |
312 | */ | |
dc644fe2 GT |
313 | |
314 | #define MAX_SESS_ID_ATTEMPTS 10 | |
ae3947de | 315 | static int def_generate_session_id(SSL *ssl, unsigned char *id, |
0f113f3e | 316 | unsigned int *id_len) |
dc644fe2 | 317 | { |
0f113f3e MC |
318 | unsigned int retry = 0; |
319 | do | |
0f8815aa | 320 | if (RAND_bytes_ex(ssl->ctx->libctx, id, *id_len, 0) <= 0) |
0f113f3e MC |
321 | return 0; |
322 | while (SSL_has_matching_session_id(ssl, id, *id_len) && | |
323 | (++retry < MAX_SESS_ID_ATTEMPTS)) ; | |
324 | if (retry < MAX_SESS_ID_ATTEMPTS) | |
325 | return 1; | |
326 | /* else - woops a session_id match */ | |
327 | /* | |
328 | * XXX We should also check the external cache -- but the probability of | |
329 | * a collision is negligible, and we could not prevent the concurrent | |
330 | * creation of sessions with identical IDs since we currently don't have | |
331 | * means to atomically check whether a session ID already exists and make | |
332 | * a reservation for it if it does not (this problem applies to the | |
333 | * internal cache as well). | |
334 | */ | |
335 | return 0; | |
dc644fe2 GT |
336 | } |
337 | ||
a84e5c9a TS |
338 | int ssl_generate_session_id(SSL *s, SSL_SESSION *ss) |
339 | { | |
340 | unsigned int tmp; | |
341 | GEN_SESSION_CB cb = def_generate_session_id; | |
342 | ||
343 | switch (s->version) { | |
344 | case SSL3_VERSION: | |
345 | case TLS1_VERSION: | |
346 | case TLS1_1_VERSION: | |
347 | case TLS1_2_VERSION: | |
348 | case TLS1_3_VERSION: | |
349 | case DTLS1_BAD_VER: | |
350 | case DTLS1_VERSION: | |
351 | case DTLS1_2_VERSION: | |
352 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
353 | break; | |
354 | default: | |
c48ffbcc | 355 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_UNSUPPORTED_SSL_VERSION); |
a84e5c9a TS |
356 | return 0; |
357 | } | |
358 | ||
359 | /*- | |
360 | * If RFC5077 ticket, use empty session ID (as server). | |
361 | * Note that: | |
362 | * (a) ssl_get_prev_session() does lookahead into the | |
363 | * ClientHello extensions to find the session ticket. | |
364 | * When ssl_get_prev_session() fails, statem_srvr.c calls | |
365 | * ssl_get_new_session() in tls_process_client_hello(). | |
366 | * At that point, it has not yet parsed the extensions, | |
367 | * however, because of the lookahead, it already knows | |
368 | * whether a ticket is expected or not. | |
369 | * | |
370 | * (b) statem_clnt.c calls ssl_get_new_session() before parsing | |
371 | * ServerHello extensions, and before recording the session | |
372 | * ID received from the server, so this block is a noop. | |
373 | */ | |
374 | if (s->ext.ticket_expected) { | |
375 | ss->session_id_length = 0; | |
376 | return 1; | |
377 | } | |
378 | ||
379 | /* Choose which callback will set the session ID */ | |
cd3f8c1b RS |
380 | if (!CRYPTO_THREAD_read_lock(s->lock)) |
381 | return 0; | |
382 | if (!CRYPTO_THREAD_read_lock(s->session_ctx->lock)) { | |
383 | CRYPTO_THREAD_unlock(s->lock); | |
384 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, | |
385 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); | |
386 | return 0; | |
387 | } | |
a84e5c9a TS |
388 | if (s->generate_session_id) |
389 | cb = s->generate_session_id; | |
390 | else if (s->session_ctx->generate_session_id) | |
391 | cb = s->session_ctx->generate_session_id; | |
392 | CRYPTO_THREAD_unlock(s->session_ctx->lock); | |
393 | CRYPTO_THREAD_unlock(s->lock); | |
394 | /* Choose a session ID */ | |
395 | memset(ss->session_id, 0, ss->session_id_length); | |
396 | tmp = (int)ss->session_id_length; | |
397 | if (!cb(s, ss->session_id, &tmp)) { | |
398 | /* The callback failed */ | |
c48ffbcc | 399 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 400 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); |
a84e5c9a TS |
401 | return 0; |
402 | } | |
403 | /* | |
404 | * Don't allow the callback to set the session length to zero. nor | |
405 | * set it higher than it was. | |
406 | */ | |
407 | if (tmp == 0 || tmp > ss->session_id_length) { | |
408 | /* The callback set an illegal length */ | |
c48ffbcc | 409 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 410 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); |
a84e5c9a TS |
411 | return 0; |
412 | } | |
413 | ss->session_id_length = tmp; | |
414 | /* Finally, check for a conflict */ | |
415 | if (SSL_has_matching_session_id(s, ss->session_id, | |
416 | (unsigned int)ss->session_id_length)) { | |
c48ffbcc | 417 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_SSL_SESSION_ID_CONFLICT); |
a84e5c9a TS |
418 | return 0; |
419 | } | |
420 | ||
421 | return 1; | |
422 | } | |
423 | ||
6b691a5c | 424 | int ssl_get_new_session(SSL *s, int session) |
0f113f3e MC |
425 | { |
426 | /* This gets used by clients and servers. */ | |
427 | ||
0f113f3e | 428 | SSL_SESSION *ss = NULL; |
0f113f3e | 429 | |
f63a17d6 | 430 | if ((ss = SSL_SESSION_new()) == NULL) { |
c48ffbcc | 431 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE); |
a84e5c9a | 432 | return 0; |
f63a17d6 | 433 | } |
0f113f3e MC |
434 | |
435 | /* If the context has a default timeout, use it */ | |
436 | if (s->session_ctx->session_timeout == 0) | |
437 | ss->timeout = SSL_get_default_timeout(s); | |
438 | else | |
439 | ss->timeout = s->session_ctx->session_timeout; | |
a65c8d8f | 440 | ssl_session_calculate_timeout(ss); |
0f113f3e | 441 | |
62adbcee RS |
442 | SSL_SESSION_free(s->session); |
443 | s->session = NULL; | |
0f113f3e MC |
444 | |
445 | if (session) { | |
32305f88 MC |
446 | if (SSL_IS_TLS13(s)) { |
447 | /* | |
448 | * We generate the session id while constructing the | |
449 | * NewSessionTicket in TLSv1.3. | |
450 | */ | |
451 | ss->session_id_length = 0; | |
452 | } else if (!ssl_generate_session_id(s, ss)) { | |
f63a17d6 | 453 | /* SSLfatal() already called */ |
0f113f3e | 454 | SSL_SESSION_free(ss); |
a84e5c9a | 455 | return 0; |
0f113f3e | 456 | } |
e481f9b9 | 457 | |
0f113f3e MC |
458 | } else { |
459 | ss->session_id_length = 0; | |
460 | } | |
461 | ||
cbe29648 | 462 | if (s->sid_ctx_length > sizeof(ss->sid_ctx)) { |
c48ffbcc | 463 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
0f113f3e MC |
464 | SSL_SESSION_free(ss); |
465 | return 0; | |
466 | } | |
467 | memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length); | |
468 | ss->sid_ctx_length = s->sid_ctx_length; | |
469 | s->session = ss; | |
470 | ss->ssl_version = s->version; | |
471 | ss->verify_result = X509_V_OK; | |
472 | ||
e7f0d921 | 473 | /* If client supports extended master secret set it in session */ |
555cbb32 | 474 | if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) |
e7f0d921 DSH |
475 | ss->flags |= SSL_SESS_FLAG_EXTMS; |
476 | ||
a84e5c9a | 477 | return 1; |
0f113f3e | 478 | } |
d02b48c6 | 479 | |
6cc0b3c2 MC |
480 | SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id, |
481 | size_t sess_id_len) | |
482 | { | |
483 | SSL_SESSION *ret = NULL; | |
6cc0b3c2 MC |
484 | |
485 | if ((s->session_ctx->session_cache_mode | |
486 | & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP) == 0) { | |
487 | SSL_SESSION data; | |
488 | ||
489 | data.ssl_version = s->version; | |
490 | if (!ossl_assert(sess_id_len <= SSL_MAX_SSL_SESSION_ID_LENGTH)) | |
491 | return NULL; | |
492 | ||
493 | memcpy(data.session_id, sess_id, sess_id_len); | |
494 | data.session_id_length = sess_id_len; | |
495 | ||
cd3f8c1b RS |
496 | if (!CRYPTO_THREAD_read_lock(s->session_ctx->lock)) |
497 | return NULL; | |
6cc0b3c2 MC |
498 | ret = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data); |
499 | if (ret != NULL) { | |
500 | /* don't allow other threads to steal it: */ | |
501 | SSL_SESSION_up_ref(ret); | |
502 | } | |
503 | CRYPTO_THREAD_unlock(s->session_ctx->lock); | |
504 | if (ret == NULL) | |
acce0557 | 505 | ssl_tsan_counter(s->session_ctx, &s->session_ctx->stats.sess_miss); |
6cc0b3c2 MC |
506 | } |
507 | ||
508 | if (ret == NULL && s->session_ctx->get_session_cb != NULL) { | |
509 | int copy = 1; | |
510 | ||
511 | ret = s->session_ctx->get_session_cb(s, sess_id, sess_id_len, ©); | |
512 | ||
513 | if (ret != NULL) { | |
acce0557 P |
514 | ssl_tsan_counter(s->session_ctx, |
515 | &s->session_ctx->stats.sess_cb_hit); | |
6cc0b3c2 MC |
516 | |
517 | /* | |
518 | * Increment reference count now if the session callback asks us | |
519 | * to do so (note that if the session structures returned by the | |
520 | * callback are shared between threads, it must handle the | |
521 | * reference count itself [i.e. copy == 0], or things won't be | |
522 | * thread-safe). | |
523 | */ | |
524 | if (copy) | |
525 | SSL_SESSION_up_ref(ret); | |
526 | ||
527 | /* | |
528 | * Add the externally cached session to the internal cache as | |
529 | * well if and only if we are supposed to. | |
530 | */ | |
531 | if ((s->session_ctx->session_cache_mode & | |
532 | SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0) { | |
533 | /* | |
534 | * Either return value of SSL_CTX_add_session should not | |
535 | * interrupt the session resumption process. The return | |
536 | * value is intentionally ignored. | |
537 | */ | |
538 | (void)SSL_CTX_add_session(s->session_ctx, ret); | |
539 | } | |
540 | } | |
541 | } | |
542 | ||
543 | return ret; | |
544 | } | |
545 | ||
3a83462d MC |
546 | /*- |
547 | * ssl_get_prev attempts to find an SSL_SESSION to be used to resume this | |
c519e89f BM |
548 | * connection. It is only called by servers. |
549 | * | |
de7d61d5 | 550 | * hello: The parsed ClientHello data |
c519e89f BM |
551 | * |
552 | * Returns: | |
1053a6e2 MC |
553 | * -1: fatal error |
554 | * 0: no session found | |
555 | * 1: a session may have been found. | |
c519e89f BM |
556 | * |
557 | * Side effects: | |
558 | * - If a session is found then s->session is pointed at it (after freeing an | |
559 | * existing session if need be) and s->verify_result is set from the session. | |
aff8c126 | 560 | * - Both for new and resumed sessions, s->ext.ticket_expected is set to 1 |
c519e89f BM |
561 | * if the server should issue a new session ticket (to 0 otherwise). |
562 | */ | |
f63a17d6 | 563 | int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello) |
0f113f3e MC |
564 | { |
565 | /* This is used only by servers. */ | |
b56bce4f | 566 | |
0f113f3e | 567 | SSL_SESSION *ret = NULL; |
9ef9088c | 568 | int fatal = 0; |
1053a6e2 | 569 | int try_session_cache = 0; |
61fb5923 | 570 | SSL_TICKET_STATUS r; |
d02b48c6 | 571 | |
1053a6e2 | 572 | if (SSL_IS_TLS13(s)) { |
61fb5923 MC |
573 | /* |
574 | * By default we will send a new ticket. This can be overridden in the | |
575 | * ticket processing. | |
576 | */ | |
577 | s->ext.ticket_expected = 1; | |
fe874d27 MC |
578 | if (!tls_parse_extension(s, TLSEXT_IDX_psk_kex_modes, |
579 | SSL_EXT_CLIENT_HELLO, hello->pre_proc_exts, | |
f63a17d6 | 580 | NULL, 0) |
fe874d27 | 581 | || !tls_parse_extension(s, TLSEXT_IDX_psk, SSL_EXT_CLIENT_HELLO, |
f63a17d6 | 582 | hello->pre_proc_exts, NULL, 0)) |
1053a6e2 MC |
583 | return -1; |
584 | ||
585 | ret = s->session; | |
586 | } else { | |
587 | /* sets s->ext.ticket_expected */ | |
588 | r = tls_get_ticket_from_client(s, hello, &ret); | |
589 | switch (r) { | |
df0fed9a TS |
590 | case SSL_TICKET_FATAL_ERR_MALLOC: |
591 | case SSL_TICKET_FATAL_ERR_OTHER: | |
1053a6e2 | 592 | fatal = 1; |
c48ffbcc | 593 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
1053a6e2 | 594 | goto err; |
df0fed9a TS |
595 | case SSL_TICKET_NONE: |
596 | case SSL_TICKET_EMPTY: | |
6cc0b3c2 | 597 | if (hello->session_id_len > 0) { |
0afca811 | 598 | try_session_cache = 1; |
6cc0b3c2 MC |
599 | ret = lookup_sess_in_cache(s, hello->session_id, |
600 | hello->session_id_len); | |
601 | } | |
61c32649 | 602 | break; |
df0fed9a TS |
603 | case SSL_TICKET_NO_DECRYPT: |
604 | case SSL_TICKET_SUCCESS: | |
605 | case SSL_TICKET_SUCCESS_RENEW: | |
1053a6e2 | 606 | break; |
1053a6e2 | 607 | } |
0f113f3e | 608 | } |
c519e89f | 609 | |
0f113f3e MC |
610 | if (ret == NULL) |
611 | goto err; | |
612 | ||
613 | /* Now ret is non-NULL and we own one of its reference counts. */ | |
614 | ||
128ae276 MC |
615 | /* Check TLS version consistency */ |
616 | if (ret->ssl_version != s->version) | |
617 | goto err; | |
618 | ||
0f113f3e MC |
619 | if (ret->sid_ctx_length != s->sid_ctx_length |
620 | || memcmp(ret->sid_ctx, s->sid_ctx, ret->sid_ctx_length)) { | |
621 | /* | |
622 | * We have the session requested by the client, but we don't want to | |
623 | * use it in this context. | |
624 | */ | |
625 | goto err; /* treat like cache miss */ | |
626 | } | |
627 | ||
628 | if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) { | |
629 | /* | |
630 | * We can't be sure if this session is being used out of context, | |
631 | * which is especially important for SSL_VERIFY_PEER. The application | |
632 | * should have used SSL[_CTX]_set_session_id_context. For this error | |
633 | * case, we generate an error instead of treating the event like a | |
634 | * cache miss (otherwise it would be easy for applications to | |
635 | * effectively disable the session cache by accident without anyone | |
636 | * noticing). | |
637 | */ | |
638 | ||
c48ffbcc | 639 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 640 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); |
0f113f3e MC |
641 | fatal = 1; |
642 | goto err; | |
643 | } | |
644 | ||
25959e04 | 645 | if (sess_timedout(time(NULL), ret)) { |
acce0557 | 646 | ssl_tsan_counter(s->session_ctx, &s->session_ctx->stats.sess_timeout); |
0f113f3e MC |
647 | if (try_session_cache) { |
648 | /* session was from the cache, so remove it */ | |
649 | SSL_CTX_remove_session(s->session_ctx, ret); | |
650 | } | |
651 | goto err; | |
652 | } | |
653 | ||
e7f0d921 DSH |
654 | /* Check extended master secret extension consistency */ |
655 | if (ret->flags & SSL_SESS_FLAG_EXTMS) { | |
656 | /* If old session includes extms, but new does not: abort handshake */ | |
555cbb32 | 657 | if (!(s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS)) { |
c48ffbcc | 658 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_INCONSISTENT_EXTMS); |
e7f0d921 DSH |
659 | fatal = 1; |
660 | goto err; | |
661 | } | |
555cbb32 | 662 | } else if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) { |
e7f0d921 DSH |
663 | /* If new session includes extms, but old does not: do not resume */ |
664 | goto err; | |
665 | } | |
666 | ||
1053a6e2 MC |
667 | if (!SSL_IS_TLS13(s)) { |
668 | /* We already did this for TLS1.3 */ | |
669 | SSL_SESSION_free(s->session); | |
670 | s->session = ret; | |
671 | } | |
0f113f3e | 672 | |
acce0557 | 673 | ssl_tsan_counter(s->session_ctx, &s->session_ctx->stats.sess_hit); |
0f113f3e MC |
674 | s->verify_result = s->session->verify_result; |
675 | return 1; | |
8876bc05 BM |
676 | |
677 | err: | |
0f113f3e MC |
678 | if (ret != NULL) { |
679 | SSL_SESSION_free(ret); | |
1f5b44e9 | 680 | /* In TLSv1.3 s->session was already set to ret, so we NULL it out */ |
128ae276 MC |
681 | if (SSL_IS_TLS13(s)) |
682 | s->session = NULL; | |
e481f9b9 | 683 | |
0f113f3e MC |
684 | if (!try_session_cache) { |
685 | /* | |
686 | * The session was from a ticket, so we should issue a ticket for | |
687 | * the new session | |
688 | */ | |
aff8c126 | 689 | s->ext.ticket_expected = 1; |
0f113f3e | 690 | } |
0f113f3e | 691 | } |
f63a17d6 | 692 | if (fatal) |
0f113f3e | 693 | return -1; |
40f805ad MC |
694 | |
695 | return 0; | |
0f113f3e | 696 | } |
d02b48c6 | 697 | |
6b691a5c | 698 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
0f113f3e | 699 | { |
9ef9088c | 700 | int ret = 0; |
0f113f3e MC |
701 | SSL_SESSION *s; |
702 | ||
703 | /* | |
704 | * add just 1 reference count for the SSL_CTX's session cache even though | |
705 | * it has two ways of access: each session is in a doubly linked list and | |
706 | * an lhash | |
707 | */ | |
16203f7b | 708 | SSL_SESSION_up_ref(c); |
0f113f3e MC |
709 | /* |
710 | * if session c is in already in cache, we take back the increment later | |
711 | */ | |
712 | ||
cd3f8c1b RS |
713 | if (!CRYPTO_THREAD_write_lock(ctx->lock)) { |
714 | SSL_SESSION_free(c); | |
715 | return 0; | |
716 | } | |
0f113f3e MC |
717 | s = lh_SSL_SESSION_insert(ctx->sessions, c); |
718 | ||
719 | /* | |
720 | * s != NULL iff we already had a session with the given PID. In this | |
721 | * case, s == c should hold (then we did not really modify | |
722 | * ctx->sessions), or we're in trouble. | |
723 | */ | |
724 | if (s != NULL && s != c) { | |
725 | /* We *are* in trouble ... */ | |
726 | SSL_SESSION_list_remove(ctx, s); | |
727 | SSL_SESSION_free(s); | |
728 | /* | |
729 | * ... so pretend the other session did not exist in cache (we cannot | |
730 | * handle two SSL_SESSION structures with identical session ID in the | |
731 | * same cache, which could happen e.g. when two threads concurrently | |
732 | * obtain the same session from an external cache) | |
733 | */ | |
734 | s = NULL; | |
38088ce9 BE |
735 | } else if (s == NULL && |
736 | lh_SSL_SESSION_retrieve(ctx->sessions, c) == NULL) { | |
737 | /* s == NULL can also mean OOM error in lh_SSL_SESSION_insert ... */ | |
738 | ||
739 | /* | |
740 | * ... so take back the extra reference and also don't add | |
741 | * the session to the SSL_SESSION_list at this time | |
742 | */ | |
743 | s = c; | |
0f113f3e MC |
744 | } |
745 | ||
25959e04 TS |
746 | /* Adjust last used time, and add back into the cache at the appropriate spot */ |
747 | if (ctx->session_cache_mode & SSL_SESS_CACHE_UPDATE_TIME) { | |
748 | c->time = time(NULL); | |
749 | ssl_session_calculate_timeout(c); | |
750 | } | |
751 | SSL_SESSION_list_add(ctx, c); | |
0f113f3e MC |
752 | |
753 | if (s != NULL) { | |
754 | /* | |
755 | * existing cache entry -- decrement previously incremented reference | |
756 | * count because it already takes into account the cache | |
757 | */ | |
758 | ||
759 | SSL_SESSION_free(s); /* s == c */ | |
760 | ret = 0; | |
761 | } else { | |
762 | /* | |
763 | * new cache entry -- remove old ones if cache has become too large | |
764 | */ | |
765 | ||
766 | ret = 1; | |
767 | ||
768 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) { | |
a230b26e | 769 | while (SSL_CTX_sess_number(ctx) > SSL_CTX_sess_get_cache_size(ctx)) { |
0f113f3e MC |
770 | if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) |
771 | break; | |
772 | else | |
acce0557 | 773 | ssl_tsan_counter(ctx, &ctx->stats.sess_cache_full); |
0f113f3e MC |
774 | } |
775 | } | |
776 | } | |
16203f7b AG |
777 | CRYPTO_THREAD_unlock(ctx->lock); |
778 | return ret; | |
0f113f3e | 779 | } |
d02b48c6 | 780 | |
6b691a5c | 781 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
801294f8 | 782 | { |
0f113f3e | 783 | return remove_session_lock(ctx, c, 1); |
801294f8 DSH |
784 | } |
785 | ||
0fda2e37 | 786 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) |
0f113f3e MC |
787 | { |
788 | SSL_SESSION *r; | |
789 | int ret = 0; | |
790 | ||
791 | if ((c != NULL) && (c->session_id_length != 0)) { | |
cd3f8c1b RS |
792 | if (lck) { |
793 | if (!CRYPTO_THREAD_write_lock(ctx->lock)) | |
794 | return 0; | |
795 | } | |
66d7de16 | 796 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) != NULL) { |
0f113f3e | 797 | ret = 1; |
66d7de16 MC |
798 | r = lh_SSL_SESSION_delete(ctx->sessions, r); |
799 | SSL_SESSION_list_remove(ctx, r); | |
0f113f3e | 800 | } |
e4612d02 | 801 | c->not_resumable = 1; |
0f113f3e MC |
802 | |
803 | if (lck) | |
16203f7b | 804 | CRYPTO_THREAD_unlock(ctx->lock); |
0f113f3e | 805 | |
e4612d02 MC |
806 | if (ctx->remove_session_cb != NULL) |
807 | ctx->remove_session_cb(ctx, c); | |
c0a58e03 MH |
808 | |
809 | if (ret) | |
810 | SSL_SESSION_free(r); | |
cd3f8c1b | 811 | } |
26a7d938 | 812 | return ret; |
0f113f3e | 813 | } |
d02b48c6 | 814 | |
6b691a5c | 815 | void SSL_SESSION_free(SSL_SESSION *ss) |
0f113f3e MC |
816 | { |
817 | int i; | |
d02b48c6 | 818 | |
e6e9170d RS |
819 | if (ss == NULL) |
820 | return; | |
2f545ae4 | 821 | CRYPTO_DOWN_REF(&ss->references, &i, ss->lock); |
f3f1cf84 | 822 | REF_PRINT_COUNT("SSL_SESSION", ss); |
0f113f3e MC |
823 | if (i > 0) |
824 | return; | |
f3f1cf84 | 825 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 826 | |
0f113f3e | 827 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
58964a49 | 828 | |
cbe29648 RS |
829 | OPENSSL_cleanse(ss->master_key, sizeof(ss->master_key)); |
830 | OPENSSL_cleanse(ss->session_id, sizeof(ss->session_id)); | |
222561fe | 831 | X509_free(ss->peer); |
79b2a2f2 | 832 | OSSL_STACK_OF_X509_free(ss->peer_chain); |
aff8c126 RS |
833 | OPENSSL_free(ss->ext.hostname); |
834 | OPENSSL_free(ss->ext.tick); | |
ddac1974 | 835 | #ifndef OPENSSL_NO_PSK |
25aaa98a RS |
836 | OPENSSL_free(ss->psk_identity_hint); |
837 | OPENSSL_free(ss->psk_identity); | |
edc032b5 BL |
838 | #endif |
839 | #ifndef OPENSSL_NO_SRP | |
25aaa98a | 840 | OPENSSL_free(ss->srp_username); |
ed3883d2 | 841 | #endif |
f6370040 | 842 | OPENSSL_free(ss->ext.alpn_selected); |
df0fed9a | 843 | OPENSSL_free(ss->ticket_appdata); |
16203f7b | 844 | CRYPTO_THREAD_lock_free(ss->lock); |
4b45c6e5 | 845 | OPENSSL_clear_free(ss, sizeof(*ss)); |
0f113f3e | 846 | } |
d02b48c6 | 847 | |
16203f7b AG |
848 | int SSL_SESSION_up_ref(SSL_SESSION *ss) |
849 | { | |
850 | int i; | |
851 | ||
2f545ae4 | 852 | if (CRYPTO_UP_REF(&ss->references, &i, ss->lock) <= 0) |
16203f7b AG |
853 | return 0; |
854 | ||
855 | REF_PRINT_COUNT("SSL_SESSION", ss); | |
856 | REF_ASSERT_ISNT(i < 2); | |
857 | return ((i > 1) ? 1 : 0); | |
858 | } | |
859 | ||
6b691a5c | 860 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
0f113f3e | 861 | { |
e70656cf MC |
862 | ssl_clear_bad_session(s); |
863 | if (s->ctx->method != s->method) { | |
864 | if (!SSL_set_ssl_method(s, s->ctx->method)) | |
865 | return 0; | |
866 | } | |
0f113f3e | 867 | |
e70656cf | 868 | if (session != NULL) { |
16203f7b | 869 | SSL_SESSION_up_ref(session); |
e70656cf | 870 | s->verify_result = session->verify_result; |
0f113f3e | 871 | } |
e70656cf MC |
872 | SSL_SESSION_free(s->session); |
873 | s->session = session; | |
874 | ||
875 | return 1; | |
0f113f3e | 876 | } |
d02b48c6 | 877 | |
fddfc0af RG |
878 | int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid, |
879 | unsigned int sid_len) | |
880 | { | |
881 | if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) { | |
6849b73c | 882 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_TOO_LONG); |
fddfc0af RG |
883 | return 0; |
884 | } | |
885 | s->session_id_length = sid_len; | |
6aad9393 RG |
886 | if (sid != s->session_id) |
887 | memcpy(s->session_id, sid, sid_len); | |
fddfc0af RG |
888 | return 1; |
889 | } | |
890 | ||
6b691a5c | 891 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
0f113f3e | 892 | { |
25959e04 TS |
893 | time_t new_timeout = (time_t)t; |
894 | ||
895 | if (s == NULL || t < 0) | |
26a7d938 | 896 | return 0; |
25959e04 TS |
897 | if (s->owner != NULL) { |
898 | if (!CRYPTO_THREAD_write_lock(s->owner->lock)) | |
899 | return 0; | |
900 | s->timeout = new_timeout; | |
901 | ssl_session_calculate_timeout(s); | |
902 | SSL_SESSION_list_add(s->owner, s); | |
903 | CRYPTO_THREAD_unlock(s->owner->lock); | |
904 | } else { | |
905 | s->timeout = new_timeout; | |
906 | ssl_session_calculate_timeout(s); | |
907 | } | |
208fb891 | 908 | return 1; |
0f113f3e | 909 | } |
d02b48c6 | 910 | |
0821bcd4 | 911 | long SSL_SESSION_get_timeout(const SSL_SESSION *s) |
0f113f3e MC |
912 | { |
913 | if (s == NULL) | |
26a7d938 | 914 | return 0; |
25959e04 | 915 | return (long)s->timeout; |
0f113f3e | 916 | } |
d02b48c6 | 917 | |
0821bcd4 | 918 | long SSL_SESSION_get_time(const SSL_SESSION *s) |
0f113f3e MC |
919 | { |
920 | if (s == NULL) | |
26a7d938 | 921 | return 0; |
25959e04 | 922 | return (long)s->time; |
0f113f3e | 923 | } |
d02b48c6 | 924 | |
6b691a5c | 925 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
0f113f3e | 926 | { |
25959e04 TS |
927 | time_t new_time = (time_t)t; |
928 | ||
0f113f3e | 929 | if (s == NULL) |
26a7d938 | 930 | return 0; |
25959e04 TS |
931 | if (s->owner != NULL) { |
932 | if (!CRYPTO_THREAD_write_lock(s->owner->lock)) | |
933 | return 0; | |
934 | s->time = new_time; | |
935 | ssl_session_calculate_timeout(s); | |
936 | SSL_SESSION_list_add(s->owner, s); | |
937 | CRYPTO_THREAD_unlock(s->owner->lock); | |
938 | } else { | |
939 | s->time = new_time; | |
940 | ssl_session_calculate_timeout(s); | |
941 | } | |
26a7d938 | 942 | return t; |
0f113f3e | 943 | } |
d02b48c6 | 944 | |
bd01f649 TS |
945 | int SSL_SESSION_get_protocol_version(const SSL_SESSION *s) |
946 | { | |
bd01f649 TS |
947 | return s->ssl_version; |
948 | } | |
949 | ||
5a43d511 MC |
950 | int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version) |
951 | { | |
952 | s->ssl_version = version; | |
953 | return 1; | |
954 | } | |
955 | ||
e9281323 RS |
956 | const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s) |
957 | { | |
958 | return s->cipher; | |
959 | } | |
1a993d1d MC |
960 | |
961 | int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher) | |
962 | { | |
963 | s->cipher = cipher; | |
964 | return 1; | |
965 | } | |
e9281323 | 966 | |
4b6b8487 LC |
967 | const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s) |
968 | { | |
aff8c126 | 969 | return s->ext.hostname; |
4b6b8487 LC |
970 | } |
971 | ||
67738645 MC |
972 | int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname) |
973 | { | |
974 | OPENSSL_free(s->ext.hostname); | |
975 | if (hostname == NULL) { | |
976 | s->ext.hostname = NULL; | |
977 | return 1; | |
978 | } | |
979 | s->ext.hostname = OPENSSL_strdup(hostname); | |
980 | ||
981 | return s->ext.hostname != NULL; | |
982 | } | |
983 | ||
f2baac27 MC |
984 | int SSL_SESSION_has_ticket(const SSL_SESSION *s) |
985 | { | |
aff8c126 | 986 | return (s->ext.ticklen > 0) ? 1 : 0; |
f2baac27 MC |
987 | } |
988 | ||
989 | unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s) | |
990 | { | |
aff8c126 | 991 | return s->ext.tick_lifetime_hint; |
f2baac27 MC |
992 | } |
993 | ||
48593cb1 | 994 | void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick, |
a230b26e | 995 | size_t *len) |
b7c9187b | 996 | { |
aff8c126 | 997 | *len = s->ext.ticklen; |
61986d32 | 998 | if (tick != NULL) |
aff8c126 | 999 | *tick = s->ext.tick; |
b7c9187b MC |
1000 | } |
1001 | ||
fcc47578 MC |
1002 | uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s) |
1003 | { | |
1004 | return s->ext.max_early_data; | |
1005 | } | |
1006 | ||
98e1d934 MC |
1007 | int SSL_SESSION_set_max_early_data(SSL_SESSION *s, uint32_t max_early_data) |
1008 | { | |
1009 | s->ext.max_early_data = max_early_data; | |
1010 | ||
1011 | return 1; | |
1012 | } | |
1013 | ||
67738645 MC |
1014 | void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s, |
1015 | const unsigned char **alpn, | |
1016 | size_t *len) | |
1017 | { | |
1018 | *alpn = s->ext.alpn_selected; | |
1019 | *len = s->ext.alpn_selected_len; | |
1020 | } | |
1021 | ||
1022 | int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s, const unsigned char *alpn, | |
1023 | size_t len) | |
1024 | { | |
1025 | OPENSSL_free(s->ext.alpn_selected); | |
1026 | if (alpn == NULL || len == 0) { | |
1027 | s->ext.alpn_selected = NULL; | |
1028 | s->ext.alpn_selected_len = 0; | |
1029 | return 1; | |
1030 | } | |
1031 | s->ext.alpn_selected = OPENSSL_memdup(alpn, len); | |
1032 | if (s->ext.alpn_selected == NULL) { | |
1033 | s->ext.alpn_selected_len = 0; | |
1034 | return 0; | |
1035 | } | |
1036 | s->ext.alpn_selected_len = len; | |
1037 | ||
1038 | return 1; | |
1039 | } | |
1040 | ||
08557cf2 | 1041 | X509 *SSL_SESSION_get0_peer(SSL_SESSION *s) |
0f113f3e MC |
1042 | { |
1043 | return s->peer; | |
1044 | } | |
1045 | ||
1046 | int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx, | |
1047 | unsigned int sid_ctx_len) | |
1048 | { | |
1049 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
6849b73c | 1050 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); |
0f113f3e MC |
1051 | return 0; |
1052 | } | |
1053 | s->sid_ctx_length = sid_ctx_len; | |
6aad9393 RG |
1054 | if (sid_ctx != s->sid_ctx) |
1055 | memcpy(s->sid_ctx, sid_ctx, sid_ctx_len); | |
0f113f3e MC |
1056 | |
1057 | return 1; | |
1058 | } | |
08557cf2 | 1059 | |
e586eac8 MC |
1060 | int SSL_SESSION_is_resumable(const SSL_SESSION *s) |
1061 | { | |
1062 | /* | |
1063 | * In the case of EAP-FAST, we can have a pre-shared "ticket" without a | |
1064 | * session ID. | |
1065 | */ | |
1066 | return !s->not_resumable | |
1067 | && (s->session_id_length > 0 || s->ext.ticklen > 0); | |
1068 | } | |
1069 | ||
6b691a5c | 1070 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
0f113f3e MC |
1071 | { |
1072 | long l; | |
1073 | if (s == NULL) | |
26a7d938 | 1074 | return 0; |
0f113f3e MC |
1075 | l = s->session_timeout; |
1076 | s->session_timeout = t; | |
26a7d938 | 1077 | return l; |
0f113f3e | 1078 | } |
413c4f45 | 1079 | |
0821bcd4 | 1080 | long SSL_CTX_get_timeout(const SSL_CTX *s) |
0f113f3e MC |
1081 | { |
1082 | if (s == NULL) | |
26a7d938 K |
1083 | return 0; |
1084 | return s->session_timeout; | |
0f113f3e | 1085 | } |
413c4f45 | 1086 | |
0f113f3e | 1087 | int SSL_set_session_secret_cb(SSL *s, |
aff8c126 | 1088 | tls_session_secret_cb_fn tls_session_secret_cb, |
0f113f3e MC |
1089 | void *arg) |
1090 | { | |
1091 | if (s == NULL) | |
26a7d938 | 1092 | return 0; |
aff8c126 RS |
1093 | s->ext.session_secret_cb = tls_session_secret_cb; |
1094 | s->ext.session_secret_cb_arg = arg; | |
208fb891 | 1095 | return 1; |
0f113f3e | 1096 | } |
12bf56c0 DSH |
1097 | |
1098 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, | |
0f113f3e MC |
1099 | void *arg) |
1100 | { | |
1101 | if (s == NULL) | |
26a7d938 | 1102 | return 0; |
aff8c126 RS |
1103 | s->ext.session_ticket_cb = cb; |
1104 | s->ext.session_ticket_cb_arg = arg; | |
208fb891 | 1105 | return 1; |
0f113f3e | 1106 | } |
12bf56c0 DSH |
1107 | |
1108 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) | |
0f113f3e MC |
1109 | { |
1110 | if (s->version >= TLS1_VERSION) { | |
aff8c126 RS |
1111 | OPENSSL_free(s->ext.session_ticket); |
1112 | s->ext.session_ticket = NULL; | |
1113 | s->ext.session_ticket = | |
0f113f3e | 1114 | OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); |
aff8c126 | 1115 | if (s->ext.session_ticket == NULL) { |
6849b73c | 1116 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
1117 | return 0; |
1118 | } | |
1119 | ||
1ed327f7 | 1120 | if (ext_data != NULL) { |
aff8c126 RS |
1121 | s->ext.session_ticket->length = ext_len; |
1122 | s->ext.session_ticket->data = s->ext.session_ticket + 1; | |
1123 | memcpy(s->ext.session_ticket->data, ext_data, ext_len); | |
0f113f3e | 1124 | } else { |
aff8c126 RS |
1125 | s->ext.session_ticket->length = 0; |
1126 | s->ext.session_ticket->data = NULL; | |
0f113f3e MC |
1127 | } |
1128 | ||
1129 | return 1; | |
1130 | } | |
1131 | ||
1132 | return 0; | |
1133 | } | |
0f113f3e | 1134 | |
6b691a5c | 1135 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
0f113f3e | 1136 | { |
25959e04 TS |
1137 | STACK_OF(SSL_SESSION) *sk; |
1138 | SSL_SESSION *current; | |
0f113f3e | 1139 | unsigned long i; |
0f113f3e | 1140 | |
cd3f8c1b RS |
1141 | if (!CRYPTO_THREAD_write_lock(s->lock)) |
1142 | return; | |
25959e04 TS |
1143 | |
1144 | sk = sk_SSL_SESSION_new_null(); | |
739a1eb1 RS |
1145 | i = lh_SSL_SESSION_get_down_load(s->sessions); |
1146 | lh_SSL_SESSION_set_down_load(s->sessions, 0); | |
25959e04 TS |
1147 | |
1148 | /* | |
1149 | * Iterate over the list from the back (oldest), and stop | |
1150 | * when a session can no longer be removed. | |
1151 | * Add the session to a temporary list to be freed outside | |
1152 | * the SSL_CTX lock. | |
1153 | * But still do the remove_session_cb() within the lock. | |
1154 | */ | |
1155 | while (s->session_cache_tail != NULL) { | |
1156 | current = s->session_cache_tail; | |
1157 | if (t == 0 || sess_timedout((time_t)t, current)) { | |
1158 | lh_SSL_SESSION_delete(s->sessions, current); | |
1159 | SSL_SESSION_list_remove(s, current); | |
1160 | current->not_resumable = 1; | |
1161 | if (s->remove_session_cb != NULL) | |
1162 | s->remove_session_cb(s, current); | |
1163 | /* | |
1164 | * Throw the session on a stack, it's entirely plausible | |
1165 | * that while freeing outside the critical section, the | |
1166 | * session could be re-added, so avoid using the next/prev | |
1167 | * pointers. If the stack failed to create, or the session | |
1168 | * couldn't be put on the stack, just free it here | |
1169 | */ | |
1170 | if (sk == NULL || !sk_SSL_SESSION_push(sk, current)) | |
1171 | SSL_SESSION_free(current); | |
1172 | } else { | |
1173 | break; | |
1174 | } | |
1175 | } | |
1176 | ||
739a1eb1 | 1177 | lh_SSL_SESSION_set_down_load(s->sessions, i); |
16203f7b | 1178 | CRYPTO_THREAD_unlock(s->lock); |
25959e04 TS |
1179 | |
1180 | sk_SSL_SESSION_pop_free(sk, SSL_SESSION_free); | |
0f113f3e | 1181 | } |
d02b48c6 | 1182 | |
6b691a5c | 1183 | int ssl_clear_bad_session(SSL *s) |
0f113f3e MC |
1184 | { |
1185 | if ((s->session != NULL) && | |
1186 | !(s->shutdown & SSL_SENT_SHUTDOWN) && | |
1187 | !(SSL_in_init(s) || SSL_in_before(s))) { | |
e2bb9b9b | 1188 | SSL_CTX_remove_session(s->session_ctx, s->session); |
208fb891 | 1189 | return 1; |
0f113f3e | 1190 | } else |
26a7d938 | 1191 | return 0; |
0f113f3e | 1192 | } |
58964a49 RE |
1193 | |
1194 | /* locked by SSL_CTX in the calling function */ | |
6b691a5c | 1195 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1196 | { |
1197 | if ((s->next == NULL) || (s->prev == NULL)) | |
1198 | return; | |
1199 | ||
1200 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) { | |
1201 | /* last element in list */ | |
1202 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1203 | /* only one element in list */ | |
1204 | ctx->session_cache_head = NULL; | |
1205 | ctx->session_cache_tail = NULL; | |
1206 | } else { | |
1207 | ctx->session_cache_tail = s->prev; | |
1208 | s->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1209 | } | |
1210 | } else { | |
1211 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1212 | /* first element in list */ | |
1213 | ctx->session_cache_head = s->next; | |
1214 | s->next->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1215 | } else { | |
1216 | /* middle of list */ | |
1217 | s->next->prev = s->prev; | |
1218 | s->prev->next = s->next; | |
1219 | } | |
1220 | } | |
1221 | s->prev = s->next = NULL; | |
25959e04 | 1222 | s->owner = NULL; |
0f113f3e | 1223 | } |
58964a49 | 1224 | |
6b691a5c | 1225 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e | 1226 | { |
25959e04 TS |
1227 | SSL_SESSION *next; |
1228 | ||
0f113f3e MC |
1229 | if ((s->next != NULL) && (s->prev != NULL)) |
1230 | SSL_SESSION_list_remove(ctx, s); | |
1231 | ||
1232 | if (ctx->session_cache_head == NULL) { | |
1233 | ctx->session_cache_head = s; | |
1234 | ctx->session_cache_tail = s; | |
1235 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1236 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1237 | } else { | |
25959e04 TS |
1238 | if (timeoutcmp(s, ctx->session_cache_head) >= 0) { |
1239 | /* | |
1240 | * if we timeout after (or the same time as) the first | |
1241 | * session, put us first - usual case | |
1242 | */ | |
1243 | s->next = ctx->session_cache_head; | |
1244 | s->next->prev = s; | |
1245 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1246 | ctx->session_cache_head = s; | |
1247 | } else if (timeoutcmp(s, ctx->session_cache_tail) < 0) { | |
1248 | /* if we timeout before the last session, put us last */ | |
1249 | s->prev = ctx->session_cache_tail; | |
1250 | s->prev->next = s; | |
1251 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1252 | ctx->session_cache_tail = s; | |
1253 | } else { | |
1254 | /* | |
1255 | * we timeout somewhere in-between - if there is only | |
1256 | * one session in the cache it will be caught above | |
1257 | */ | |
1258 | next = ctx->session_cache_head->next; | |
1259 | while (next != (SSL_SESSION*)&(ctx->session_cache_tail)) { | |
1260 | if (timeoutcmp(s, next) >= 0) { | |
1261 | s->next = next; | |
1262 | s->prev = next->prev; | |
1263 | next->prev->next = s; | |
1264 | next->prev = s; | |
1265 | break; | |
1266 | } | |
1267 | next = next->next; | |
1268 | } | |
1269 | } | |
0f113f3e | 1270 | } |
25959e04 | 1271 | s->owner = ctx; |
0f113f3e | 1272 | } |
58964a49 | 1273 | |
7806f3dd | 1274 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
a230b26e | 1275 | int (*cb) (struct ssl_st *ssl, SSL_SESSION *sess)) |
0f113f3e MC |
1276 | { |
1277 | ctx->new_session_cb = cb; | |
1278 | } | |
7806f3dd | 1279 | |
0f113f3e MC |
1280 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (SSL *ssl, SSL_SESSION *sess) { |
1281 | return ctx->new_session_cb; | |
1282 | } | |
7806f3dd NL |
1283 | |
1284 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1285 | void (*cb) (SSL_CTX *ctx, SSL_SESSION *sess)) |
1286 | { | |
1287 | ctx->remove_session_cb = cb; | |
1288 | } | |
7806f3dd | 1289 | |
0f113f3e MC |
1290 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (SSL_CTX *ctx, |
1291 | SSL_SESSION *sess) { | |
1292 | return ctx->remove_session_cb; | |
1293 | } | |
7806f3dd NL |
1294 | |
1295 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, | |
0f113f3e | 1296 | SSL_SESSION *(*cb) (struct ssl_st *ssl, |
b6981744 EK |
1297 | const unsigned char *data, |
1298 | int len, int *copy)) | |
0f113f3e MC |
1299 | { |
1300 | ctx->get_session_cb = cb; | |
1301 | } | |
1302 | ||
1303 | SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (SSL *ssl, | |
a230b26e EK |
1304 | const unsigned char |
1305 | *data, int len, | |
1306 | int *copy) { | |
0f113f3e MC |
1307 | return ctx->get_session_cb; |
1308 | } | |
1309 | ||
1310 | void SSL_CTX_set_info_callback(SSL_CTX *ctx, | |
1311 | void (*cb) (const SSL *ssl, int type, int val)) | |
1312 | { | |
1313 | ctx->info_callback = cb; | |
1314 | } | |
1315 | ||
1316 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type, | |
1317 | int val) { | |
1318 | return ctx->info_callback; | |
1319 | } | |
7806f3dd NL |
1320 | |
1321 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1322 | int (*cb) (SSL *ssl, X509 **x509, |
1323 | EVP_PKEY **pkey)) | |
1324 | { | |
1325 | ctx->client_cert_cb = cb; | |
1326 | } | |
7806f3dd | 1327 | |
0f113f3e MC |
1328 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509, |
1329 | EVP_PKEY **pkey) { | |
1330 | return ctx->client_cert_cb; | |
1331 | } | |
7806f3dd NL |
1332 | |
1333 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1334 | int (*cb) (SSL *ssl, |
1335 | unsigned char *cookie, | |
1336 | unsigned int *cookie_len)) | |
1337 | { | |
1338 | ctx->app_gen_cookie_cb = cb; | |
1339 | } | |
7806f3dd NL |
1340 | |
1341 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, | |
a230b26e EK |
1342 | int (*cb) (SSL *ssl, |
1343 | const unsigned char *cookie, | |
0f113f3e MC |
1344 | unsigned int cookie_len)) |
1345 | { | |
1346 | ctx->app_verify_cookie_cb = cb; | |
1347 | } | |
7806f3dd | 1348 | |
df0fed9a TS |
1349 | int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len) |
1350 | { | |
1351 | OPENSSL_free(ss->ticket_appdata); | |
1352 | ss->ticket_appdata_len = 0; | |
1353 | if (data == NULL || len == 0) { | |
1354 | ss->ticket_appdata = NULL; | |
1355 | return 1; | |
1356 | } | |
1357 | ss->ticket_appdata = OPENSSL_memdup(data, len); | |
1358 | if (ss->ticket_appdata != NULL) { | |
1359 | ss->ticket_appdata_len = len; | |
1360 | return 1; | |
1361 | } | |
1362 | return 0; | |
1363 | } | |
1364 | ||
1365 | int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len) | |
1366 | { | |
1367 | *data = ss->ticket_appdata; | |
1368 | *len = ss->ticket_appdata_len; | |
1369 | return 1; | |
1370 | } | |
1371 | ||
3fa2812f BS |
1372 | void SSL_CTX_set_stateless_cookie_generate_cb( |
1373 | SSL_CTX *ctx, | |
1374 | int (*cb) (SSL *ssl, | |
1375 | unsigned char *cookie, | |
1376 | size_t *cookie_len)) | |
1377 | { | |
1378 | ctx->gen_stateless_cookie_cb = cb; | |
1379 | } | |
1380 | ||
1381 | void SSL_CTX_set_stateless_cookie_verify_cb( | |
1382 | SSL_CTX *ctx, | |
1383 | int (*cb) (SSL *ssl, | |
1384 | const unsigned char *cookie, | |
1385 | size_t cookie_len)) | |
1386 | { | |
1387 | ctx->verify_stateless_cookie_cb = cb; | |
1388 | } | |
1389 | ||
a230b26e | 1390 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) |