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846e33c7 | 1 | /* |
33388b44 | 2 | * Copyright 1995-2020 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 | |
d02b48c6 | 11 | #include <stdio.h> |
ec577822 | 12 | #include <openssl/rand.h> |
3c27208f | 13 | #include <openssl/engine.h> |
cd420b0b | 14 | #include "internal/refcount.h" |
6cc0b3c2 | 15 | #include "internal/cryptlib.h" |
706457b7 DMSP |
16 | #include "ssl_local.h" |
17 | #include "statem/statem_local.h" | |
d02b48c6 | 18 | |
58964a49 | 19 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); |
0f113f3e | 20 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s); |
801294f8 | 21 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); |
58964a49 | 22 | |
e7a28df7 | 23 | /* |
e586eac8 MC |
24 | * SSL_get_session() and SSL_get1_session() are problematic in TLS1.3 because, |
25 | * unlike in earlier protocol versions, the session ticket may not have been | |
26 | * sent yet even though a handshake has finished. The session ticket data could | |
27 | * come in sometime later...or even change if multiple session ticket messages | |
28 | * are sent from the server. The preferred way for applications to obtain | |
29 | * a resumable session is to use SSL_CTX_sess_set_new_cb(). | |
e7a28df7 MC |
30 | */ |
31 | ||
0821bcd4 | 32 | SSL_SESSION *SSL_get_session(const SSL *ssl) |
52732b38 | 33 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ |
0f113f3e | 34 | { |
26a7d938 | 35 | return ssl->session; |
0f113f3e | 36 | } |
52732b38 BM |
37 | |
38 | SSL_SESSION *SSL_get1_session(SSL *ssl) | |
39 | /* variant of SSL_get_session: caller really gets something */ | |
0f113f3e MC |
40 | { |
41 | SSL_SESSION *sess; | |
42 | /* | |
43 | * Need to lock this all up rather than just use CRYPTO_add so that | |
44 | * somebody doesn't free ssl->session between when we check it's non-null | |
45 | * and when we up the reference count. | |
46 | */ | |
16203f7b | 47 | CRYPTO_THREAD_read_lock(ssl->lock); |
0f113f3e MC |
48 | sess = ssl->session; |
49 | if (sess) | |
16203f7b AG |
50 | SSL_SESSION_up_ref(sess); |
51 | CRYPTO_THREAD_unlock(ssl->lock); | |
52 | return sess; | |
0f113f3e MC |
53 | } |
54 | ||
6b691a5c | 55 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
0f113f3e | 56 | { |
26a7d938 | 57 | return CRYPTO_set_ex_data(&s->ex_data, idx, arg); |
0f113f3e | 58 | } |
58964a49 | 59 | |
0821bcd4 | 60 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) |
0f113f3e | 61 | { |
26a7d938 | 62 | return CRYPTO_get_ex_data(&s->ex_data, idx); |
0f113f3e | 63 | } |
58964a49 | 64 | |
6b691a5c | 65 | SSL_SESSION *SSL_SESSION_new(void) |
0f113f3e MC |
66 | { |
67 | SSL_SESSION *ss; | |
68 | ||
534a43ff MC |
69 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) |
70 | return NULL; | |
71 | ||
b51bce94 | 72 | ss = OPENSSL_zalloc(sizeof(*ss)); |
0f113f3e | 73 | if (ss == NULL) { |
6849b73c | 74 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
16203f7b | 75 | return NULL; |
0f113f3e | 76 | } |
0f113f3e MC |
77 | |
78 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ | |
79 | ss->references = 1; | |
80 | ss->timeout = 60 * 5 + 4; /* 5 minute timeout by default */ | |
81 | ss->time = (unsigned long)time(NULL); | |
16203f7b AG |
82 | ss->lock = CRYPTO_THREAD_lock_new(); |
83 | if (ss->lock == NULL) { | |
6849b73c | 84 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
16203f7b AG |
85 | OPENSSL_free(ss); |
86 | return NULL; | |
87 | } | |
88 | ||
25a807bc F |
89 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data)) { |
90 | CRYPTO_THREAD_lock_free(ss->lock); | |
91 | OPENSSL_free(ss); | |
92 | return NULL; | |
93 | } | |
16203f7b | 94 | return ss; |
0f113f3e | 95 | } |
d02b48c6 | 96 | |
9fdcc21f | 97 | SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src) |
07927bed MC |
98 | { |
99 | return ssl_session_dup(src, 1); | |
100 | } | |
101 | ||
98ece4ee MC |
102 | /* |
103 | * Create a new SSL_SESSION and duplicate the contents of |src| into it. If | |
104 | * ticket == 0 then no ticket information is duplicated, otherwise it is. | |
105 | */ | |
9fdcc21f | 106 | SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket) |
98ece4ee MC |
107 | { |
108 | SSL_SESSION *dest; | |
109 | ||
8ad36917 | 110 | dest = OPENSSL_malloc(sizeof(*dest)); |
98ece4ee MC |
111 | if (dest == NULL) { |
112 | goto err; | |
113 | } | |
114 | memcpy(dest, src, sizeof(*dest)); | |
115 | ||
708cf593 MC |
116 | /* |
117 | * Set the various pointers to NULL so that we can call SSL_SESSION_free in | |
118 | * the case of an error whilst halfway through constructing dest | |
119 | */ | |
120 | #ifndef OPENSSL_NO_PSK | |
121 | dest->psk_identity_hint = NULL; | |
122 | dest->psk_identity = NULL; | |
123 | #endif | |
aff8c126 | 124 | dest->ext.hostname = NULL; |
aff8c126 | 125 | dest->ext.tick = NULL; |
eed3ec90 | 126 | dest->ext.alpn_selected = NULL; |
708cf593 MC |
127 | #ifndef OPENSSL_NO_SRP |
128 | dest->srp_username = NULL; | |
129 | #endif | |
1ee21259 TS |
130 | dest->peer_chain = NULL; |
131 | dest->peer = NULL; | |
df0fed9a | 132 | dest->ticket_appdata = NULL; |
51598215 | 133 | memset(&dest->ex_data, 0, sizeof(dest->ex_data)); |
9b6a8254 | 134 | |
708cf593 MC |
135 | /* We deliberately don't copy the prev and next pointers */ |
136 | dest->prev = NULL; | |
137 | dest->next = NULL; | |
138 | ||
139 | dest->references = 1; | |
140 | ||
16203f7b AG |
141 | dest->lock = CRYPTO_THREAD_lock_new(); |
142 | if (dest->lock == NULL) | |
143 | goto err; | |
144 | ||
1ee21259 TS |
145 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, dest, &dest->ex_data)) |
146 | goto err; | |
147 | ||
148 | if (src->peer != NULL) { | |
149 | if (!X509_up_ref(src->peer)) | |
150 | goto err; | |
151 | dest->peer = src->peer; | |
152 | } | |
708cf593 | 153 | |
36f038f1 DSH |
154 | if (src->peer_chain != NULL) { |
155 | dest->peer_chain = X509_chain_up_ref(src->peer_chain); | |
156 | if (dest->peer_chain == NULL) | |
157 | goto err; | |
158 | } | |
98ece4ee MC |
159 | #ifndef OPENSSL_NO_PSK |
160 | if (src->psk_identity_hint) { | |
7644a9ae | 161 | dest->psk_identity_hint = OPENSSL_strdup(src->psk_identity_hint); |
98ece4ee MC |
162 | if (dest->psk_identity_hint == NULL) { |
163 | goto err; | |
164 | } | |
98ece4ee MC |
165 | } |
166 | if (src->psk_identity) { | |
7644a9ae | 167 | dest->psk_identity = OPENSSL_strdup(src->psk_identity); |
98ece4ee MC |
168 | if (dest->psk_identity == NULL) { |
169 | goto err; | |
170 | } | |
98ece4ee MC |
171 | } |
172 | #endif | |
173 | ||
98ece4ee | 174 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, |
a230b26e | 175 | &dest->ex_data, &src->ex_data)) { |
98ece4ee MC |
176 | goto err; |
177 | } | |
178 | ||
aff8c126 RS |
179 | if (src->ext.hostname) { |
180 | dest->ext.hostname = OPENSSL_strdup(src->ext.hostname); | |
181 | if (dest->ext.hostname == NULL) { | |
98ece4ee MC |
182 | goto err; |
183 | } | |
98ece4ee | 184 | } |
98ece4ee | 185 | |
1ee21259 | 186 | if (ticket != 0 && src->ext.tick != NULL) { |
aff8c126 RS |
187 | dest->ext.tick = |
188 | OPENSSL_memdup(src->ext.tick, src->ext.ticklen); | |
189 | if (dest->ext.tick == NULL) | |
98ece4ee | 190 | goto err; |
708cf593 | 191 | } else { |
aff8c126 RS |
192 | dest->ext.tick_lifetime_hint = 0; |
193 | dest->ext.ticklen = 0; | |
98ece4ee MC |
194 | } |
195 | ||
27232cc3 MC |
196 | if (src->ext.alpn_selected != NULL) { |
197 | dest->ext.alpn_selected = OPENSSL_memdup(src->ext.alpn_selected, | |
198 | src->ext.alpn_selected_len); | |
199 | if (dest->ext.alpn_selected == NULL) | |
eed3ec90 | 200 | goto err; |
eed3ec90 TS |
201 | } |
202 | ||
98ece4ee | 203 | #ifndef OPENSSL_NO_SRP |
98ece4ee | 204 | if (src->srp_username) { |
7644a9ae | 205 | dest->srp_username = OPENSSL_strdup(src->srp_username); |
98ece4ee MC |
206 | if (dest->srp_username == NULL) { |
207 | goto err; | |
208 | } | |
98ece4ee MC |
209 | } |
210 | #endif | |
211 | ||
df0fed9a TS |
212 | if (src->ticket_appdata != NULL) { |
213 | dest->ticket_appdata = | |
214 | OPENSSL_memdup(src->ticket_appdata, src->ticket_appdata_len); | |
215 | if (dest->ticket_appdata == NULL) | |
216 | goto err; | |
217 | } | |
218 | ||
98ece4ee | 219 | return dest; |
a230b26e | 220 | err: |
6849b73c | 221 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
98ece4ee MC |
222 | SSL_SESSION_free(dest); |
223 | return NULL; | |
224 | } | |
225 | ||
a230b26e | 226 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) |
0f113f3e MC |
227 | { |
228 | if (len) | |
348240c6 | 229 | *len = (unsigned int)s->session_id_length; |
0f113f3e MC |
230 | return s->session_id; |
231 | } | |
fddfc0af RG |
232 | const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s, |
233 | unsigned int *len) | |
234 | { | |
235 | if (len != NULL) | |
348240c6 | 236 | *len = (unsigned int)s->sid_ctx_length; |
fddfc0af RG |
237 | return s->sid_ctx; |
238 | } | |
4879ec7b | 239 | |
f9b0b452 | 240 | unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s) |
0f113f3e MC |
241 | { |
242 | return s->compress_meth; | |
243 | } | |
244 | ||
245 | /* | |
246 | * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling | |
247 | * the ID with random junk repeatedly until we have no conflict is going to | |
248 | * complete in one iteration pretty much "most" of the time (btw: | |
249 | * understatement). So, if it takes us 10 iterations and we still can't avoid | |
250 | * a conflict - well that's a reasonable point to call it quits. Either the | |
251 | * RAND code is broken or someone is trying to open roughly very close to | |
252 | * 2^256 SSL sessions to our server. How you might store that many sessions | |
253 | * is perhaps a more interesting question ... | |
254 | */ | |
dc644fe2 GT |
255 | |
256 | #define MAX_SESS_ID_ATTEMPTS 10 | |
ae3947de | 257 | static int def_generate_session_id(SSL *ssl, unsigned char *id, |
0f113f3e | 258 | unsigned int *id_len) |
dc644fe2 | 259 | { |
0f113f3e MC |
260 | unsigned int retry = 0; |
261 | do | |
8f21260b | 262 | if (RAND_bytes_ex(ssl->ctx->libctx, id, *id_len) <= 0) |
0f113f3e MC |
263 | return 0; |
264 | while (SSL_has_matching_session_id(ssl, id, *id_len) && | |
265 | (++retry < MAX_SESS_ID_ATTEMPTS)) ; | |
266 | if (retry < MAX_SESS_ID_ATTEMPTS) | |
267 | return 1; | |
268 | /* else - woops a session_id match */ | |
269 | /* | |
270 | * XXX We should also check the external cache -- but the probability of | |
271 | * a collision is negligible, and we could not prevent the concurrent | |
272 | * creation of sessions with identical IDs since we currently don't have | |
273 | * means to atomically check whether a session ID already exists and make | |
274 | * a reservation for it if it does not (this problem applies to the | |
275 | * internal cache as well). | |
276 | */ | |
277 | return 0; | |
dc644fe2 GT |
278 | } |
279 | ||
a84e5c9a TS |
280 | int ssl_generate_session_id(SSL *s, SSL_SESSION *ss) |
281 | { | |
282 | unsigned int tmp; | |
283 | GEN_SESSION_CB cb = def_generate_session_id; | |
284 | ||
285 | switch (s->version) { | |
286 | case SSL3_VERSION: | |
287 | case TLS1_VERSION: | |
288 | case TLS1_1_VERSION: | |
289 | case TLS1_2_VERSION: | |
290 | case TLS1_3_VERSION: | |
291 | case DTLS1_BAD_VER: | |
292 | case DTLS1_VERSION: | |
293 | case DTLS1_2_VERSION: | |
294 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
295 | break; | |
296 | default: | |
c48ffbcc | 297 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_UNSUPPORTED_SSL_VERSION); |
a84e5c9a TS |
298 | return 0; |
299 | } | |
300 | ||
301 | /*- | |
302 | * If RFC5077 ticket, use empty session ID (as server). | |
303 | * Note that: | |
304 | * (a) ssl_get_prev_session() does lookahead into the | |
305 | * ClientHello extensions to find the session ticket. | |
306 | * When ssl_get_prev_session() fails, statem_srvr.c calls | |
307 | * ssl_get_new_session() in tls_process_client_hello(). | |
308 | * At that point, it has not yet parsed the extensions, | |
309 | * however, because of the lookahead, it already knows | |
310 | * whether a ticket is expected or not. | |
311 | * | |
312 | * (b) statem_clnt.c calls ssl_get_new_session() before parsing | |
313 | * ServerHello extensions, and before recording the session | |
314 | * ID received from the server, so this block is a noop. | |
315 | */ | |
316 | if (s->ext.ticket_expected) { | |
317 | ss->session_id_length = 0; | |
318 | return 1; | |
319 | } | |
320 | ||
321 | /* Choose which callback will set the session ID */ | |
322 | CRYPTO_THREAD_read_lock(s->lock); | |
323 | CRYPTO_THREAD_read_lock(s->session_ctx->lock); | |
324 | if (s->generate_session_id) | |
325 | cb = s->generate_session_id; | |
326 | else if (s->session_ctx->generate_session_id) | |
327 | cb = s->session_ctx->generate_session_id; | |
328 | CRYPTO_THREAD_unlock(s->session_ctx->lock); | |
329 | CRYPTO_THREAD_unlock(s->lock); | |
330 | /* Choose a session ID */ | |
331 | memset(ss->session_id, 0, ss->session_id_length); | |
332 | tmp = (int)ss->session_id_length; | |
333 | if (!cb(s, ss->session_id, &tmp)) { | |
334 | /* The callback failed */ | |
c48ffbcc | 335 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 336 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); |
a84e5c9a TS |
337 | return 0; |
338 | } | |
339 | /* | |
340 | * Don't allow the callback to set the session length to zero. nor | |
341 | * set it higher than it was. | |
342 | */ | |
343 | if (tmp == 0 || tmp > ss->session_id_length) { | |
344 | /* The callback set an illegal length */ | |
c48ffbcc | 345 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 346 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); |
a84e5c9a TS |
347 | return 0; |
348 | } | |
349 | ss->session_id_length = tmp; | |
350 | /* Finally, check for a conflict */ | |
351 | if (SSL_has_matching_session_id(s, ss->session_id, | |
352 | (unsigned int)ss->session_id_length)) { | |
c48ffbcc | 353 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_SSL_SESSION_ID_CONFLICT); |
a84e5c9a TS |
354 | return 0; |
355 | } | |
356 | ||
357 | return 1; | |
358 | } | |
359 | ||
6b691a5c | 360 | int ssl_get_new_session(SSL *s, int session) |
0f113f3e MC |
361 | { |
362 | /* This gets used by clients and servers. */ | |
363 | ||
0f113f3e | 364 | SSL_SESSION *ss = NULL; |
0f113f3e | 365 | |
f63a17d6 | 366 | if ((ss = SSL_SESSION_new()) == NULL) { |
c48ffbcc | 367 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE); |
a84e5c9a | 368 | return 0; |
f63a17d6 | 369 | } |
0f113f3e MC |
370 | |
371 | /* If the context has a default timeout, use it */ | |
372 | if (s->session_ctx->session_timeout == 0) | |
373 | ss->timeout = SSL_get_default_timeout(s); | |
374 | else | |
375 | ss->timeout = s->session_ctx->session_timeout; | |
376 | ||
62adbcee RS |
377 | SSL_SESSION_free(s->session); |
378 | s->session = NULL; | |
0f113f3e MC |
379 | |
380 | if (session) { | |
32305f88 MC |
381 | if (SSL_IS_TLS13(s)) { |
382 | /* | |
383 | * We generate the session id while constructing the | |
384 | * NewSessionTicket in TLSv1.3. | |
385 | */ | |
386 | ss->session_id_length = 0; | |
387 | } else if (!ssl_generate_session_id(s, ss)) { | |
f63a17d6 | 388 | /* SSLfatal() already called */ |
0f113f3e | 389 | SSL_SESSION_free(ss); |
a84e5c9a | 390 | return 0; |
0f113f3e | 391 | } |
e481f9b9 | 392 | |
0f113f3e MC |
393 | } else { |
394 | ss->session_id_length = 0; | |
395 | } | |
396 | ||
cbe29648 | 397 | if (s->sid_ctx_length > sizeof(ss->sid_ctx)) { |
c48ffbcc | 398 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
0f113f3e MC |
399 | SSL_SESSION_free(ss); |
400 | return 0; | |
401 | } | |
402 | memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length); | |
403 | ss->sid_ctx_length = s->sid_ctx_length; | |
404 | s->session = ss; | |
405 | ss->ssl_version = s->version; | |
406 | ss->verify_result = X509_V_OK; | |
407 | ||
e7f0d921 | 408 | /* If client supports extended master secret set it in session */ |
555cbb32 | 409 | if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) |
e7f0d921 DSH |
410 | ss->flags |= SSL_SESS_FLAG_EXTMS; |
411 | ||
a84e5c9a | 412 | return 1; |
0f113f3e | 413 | } |
d02b48c6 | 414 | |
6cc0b3c2 MC |
415 | SSL_SESSION *lookup_sess_in_cache(SSL *s, const unsigned char *sess_id, |
416 | size_t sess_id_len) | |
417 | { | |
418 | SSL_SESSION *ret = NULL; | |
6cc0b3c2 MC |
419 | |
420 | if ((s->session_ctx->session_cache_mode | |
421 | & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP) == 0) { | |
422 | SSL_SESSION data; | |
423 | ||
424 | data.ssl_version = s->version; | |
425 | if (!ossl_assert(sess_id_len <= SSL_MAX_SSL_SESSION_ID_LENGTH)) | |
426 | return NULL; | |
427 | ||
428 | memcpy(data.session_id, sess_id, sess_id_len); | |
429 | data.session_id_length = sess_id_len; | |
430 | ||
431 | CRYPTO_THREAD_read_lock(s->session_ctx->lock); | |
432 | ret = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data); | |
433 | if (ret != NULL) { | |
434 | /* don't allow other threads to steal it: */ | |
435 | SSL_SESSION_up_ref(ret); | |
436 | } | |
437 | CRYPTO_THREAD_unlock(s->session_ctx->lock); | |
438 | if (ret == NULL) | |
9ef9088c | 439 | tsan_counter(&s->session_ctx->stats.sess_miss); |
6cc0b3c2 MC |
440 | } |
441 | ||
442 | if (ret == NULL && s->session_ctx->get_session_cb != NULL) { | |
443 | int copy = 1; | |
444 | ||
445 | ret = s->session_ctx->get_session_cb(s, sess_id, sess_id_len, ©); | |
446 | ||
447 | if (ret != NULL) { | |
9ef9088c | 448 | tsan_counter(&s->session_ctx->stats.sess_cb_hit); |
6cc0b3c2 MC |
449 | |
450 | /* | |
451 | * Increment reference count now if the session callback asks us | |
452 | * to do so (note that if the session structures returned by the | |
453 | * callback are shared between threads, it must handle the | |
454 | * reference count itself [i.e. copy == 0], or things won't be | |
455 | * thread-safe). | |
456 | */ | |
457 | if (copy) | |
458 | SSL_SESSION_up_ref(ret); | |
459 | ||
460 | /* | |
461 | * Add the externally cached session to the internal cache as | |
462 | * well if and only if we are supposed to. | |
463 | */ | |
464 | if ((s->session_ctx->session_cache_mode & | |
465 | SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0) { | |
466 | /* | |
467 | * Either return value of SSL_CTX_add_session should not | |
468 | * interrupt the session resumption process. The return | |
469 | * value is intentionally ignored. | |
470 | */ | |
471 | (void)SSL_CTX_add_session(s->session_ctx, ret); | |
472 | } | |
473 | } | |
474 | } | |
475 | ||
476 | return ret; | |
477 | } | |
478 | ||
3a83462d MC |
479 | /*- |
480 | * ssl_get_prev attempts to find an SSL_SESSION to be used to resume this | |
c519e89f BM |
481 | * connection. It is only called by servers. |
482 | * | |
de7d61d5 | 483 | * hello: The parsed ClientHello data |
c519e89f BM |
484 | * |
485 | * Returns: | |
1053a6e2 MC |
486 | * -1: fatal error |
487 | * 0: no session found | |
488 | * 1: a session may have been found. | |
c519e89f BM |
489 | * |
490 | * Side effects: | |
491 | * - If a session is found then s->session is pointed at it (after freeing an | |
492 | * existing session if need be) and s->verify_result is set from the session. | |
aff8c126 | 493 | * - Both for new and resumed sessions, s->ext.ticket_expected is set to 1 |
c519e89f BM |
494 | * if the server should issue a new session ticket (to 0 otherwise). |
495 | */ | |
f63a17d6 | 496 | int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello) |
0f113f3e MC |
497 | { |
498 | /* This is used only by servers. */ | |
b56bce4f | 499 | |
0f113f3e | 500 | SSL_SESSION *ret = NULL; |
9ef9088c | 501 | int fatal = 0; |
1053a6e2 | 502 | int try_session_cache = 0; |
61fb5923 | 503 | SSL_TICKET_STATUS r; |
d02b48c6 | 504 | |
1053a6e2 | 505 | if (SSL_IS_TLS13(s)) { |
61fb5923 MC |
506 | /* |
507 | * By default we will send a new ticket. This can be overridden in the | |
508 | * ticket processing. | |
509 | */ | |
510 | s->ext.ticket_expected = 1; | |
fe874d27 MC |
511 | if (!tls_parse_extension(s, TLSEXT_IDX_psk_kex_modes, |
512 | SSL_EXT_CLIENT_HELLO, hello->pre_proc_exts, | |
f63a17d6 | 513 | NULL, 0) |
fe874d27 | 514 | || !tls_parse_extension(s, TLSEXT_IDX_psk, SSL_EXT_CLIENT_HELLO, |
f63a17d6 | 515 | hello->pre_proc_exts, NULL, 0)) |
1053a6e2 MC |
516 | return -1; |
517 | ||
518 | ret = s->session; | |
519 | } else { | |
520 | /* sets s->ext.ticket_expected */ | |
521 | r = tls_get_ticket_from_client(s, hello, &ret); | |
522 | switch (r) { | |
df0fed9a TS |
523 | case SSL_TICKET_FATAL_ERR_MALLOC: |
524 | case SSL_TICKET_FATAL_ERR_OTHER: | |
1053a6e2 | 525 | fatal = 1; |
c48ffbcc | 526 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
1053a6e2 | 527 | goto err; |
df0fed9a TS |
528 | case SSL_TICKET_NONE: |
529 | case SSL_TICKET_EMPTY: | |
6cc0b3c2 | 530 | if (hello->session_id_len > 0) { |
0afca811 | 531 | try_session_cache = 1; |
6cc0b3c2 MC |
532 | ret = lookup_sess_in_cache(s, hello->session_id, |
533 | hello->session_id_len); | |
534 | } | |
61c32649 | 535 | break; |
df0fed9a TS |
536 | case SSL_TICKET_NO_DECRYPT: |
537 | case SSL_TICKET_SUCCESS: | |
538 | case SSL_TICKET_SUCCESS_RENEW: | |
1053a6e2 | 539 | break; |
1053a6e2 | 540 | } |
0f113f3e | 541 | } |
c519e89f | 542 | |
0f113f3e MC |
543 | if (ret == NULL) |
544 | goto err; | |
545 | ||
546 | /* Now ret is non-NULL and we own one of its reference counts. */ | |
547 | ||
128ae276 MC |
548 | /* Check TLS version consistency */ |
549 | if (ret->ssl_version != s->version) | |
550 | goto err; | |
551 | ||
0f113f3e MC |
552 | if (ret->sid_ctx_length != s->sid_ctx_length |
553 | || memcmp(ret->sid_ctx, s->sid_ctx, ret->sid_ctx_length)) { | |
554 | /* | |
555 | * We have the session requested by the client, but we don't want to | |
556 | * use it in this context. | |
557 | */ | |
558 | goto err; /* treat like cache miss */ | |
559 | } | |
560 | ||
561 | if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) { | |
562 | /* | |
563 | * We can't be sure if this session is being used out of context, | |
564 | * which is especially important for SSL_VERIFY_PEER. The application | |
565 | * should have used SSL[_CTX]_set_session_id_context. For this error | |
566 | * case, we generate an error instead of treating the event like a | |
567 | * cache miss (otherwise it would be easy for applications to | |
568 | * effectively disable the session cache by accident without anyone | |
569 | * noticing). | |
570 | */ | |
571 | ||
c48ffbcc | 572 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 573 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); |
0f113f3e MC |
574 | fatal = 1; |
575 | goto err; | |
576 | } | |
577 | ||
0f113f3e | 578 | if (ret->timeout < (long)(time(NULL) - ret->time)) { /* timeout */ |
9ef9088c | 579 | tsan_counter(&s->session_ctx->stats.sess_timeout); |
0f113f3e MC |
580 | if (try_session_cache) { |
581 | /* session was from the cache, so remove it */ | |
582 | SSL_CTX_remove_session(s->session_ctx, ret); | |
583 | } | |
584 | goto err; | |
585 | } | |
586 | ||
e7f0d921 DSH |
587 | /* Check extended master secret extension consistency */ |
588 | if (ret->flags & SSL_SESS_FLAG_EXTMS) { | |
589 | /* If old session includes extms, but new does not: abort handshake */ | |
555cbb32 | 590 | if (!(s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS)) { |
c48ffbcc | 591 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_INCONSISTENT_EXTMS); |
e7f0d921 DSH |
592 | fatal = 1; |
593 | goto err; | |
594 | } | |
555cbb32 | 595 | } else if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) { |
e7f0d921 DSH |
596 | /* If new session includes extms, but old does not: do not resume */ |
597 | goto err; | |
598 | } | |
599 | ||
1053a6e2 MC |
600 | if (!SSL_IS_TLS13(s)) { |
601 | /* We already did this for TLS1.3 */ | |
602 | SSL_SESSION_free(s->session); | |
603 | s->session = ret; | |
604 | } | |
0f113f3e | 605 | |
9ef9088c | 606 | tsan_counter(&s->session_ctx->stats.sess_hit); |
0f113f3e MC |
607 | s->verify_result = s->session->verify_result; |
608 | return 1; | |
8876bc05 BM |
609 | |
610 | err: | |
0f113f3e MC |
611 | if (ret != NULL) { |
612 | SSL_SESSION_free(ret); | |
1f5b44e9 | 613 | /* In TLSv1.3 s->session was already set to ret, so we NULL it out */ |
128ae276 MC |
614 | if (SSL_IS_TLS13(s)) |
615 | s->session = NULL; | |
e481f9b9 | 616 | |
0f113f3e MC |
617 | if (!try_session_cache) { |
618 | /* | |
619 | * The session was from a ticket, so we should issue a ticket for | |
620 | * the new session | |
621 | */ | |
aff8c126 | 622 | s->ext.ticket_expected = 1; |
0f113f3e | 623 | } |
0f113f3e | 624 | } |
f63a17d6 | 625 | if (fatal) |
0f113f3e | 626 | return -1; |
40f805ad MC |
627 | |
628 | return 0; | |
0f113f3e | 629 | } |
d02b48c6 | 630 | |
6b691a5c | 631 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
0f113f3e | 632 | { |
9ef9088c | 633 | int ret = 0; |
0f113f3e MC |
634 | SSL_SESSION *s; |
635 | ||
636 | /* | |
637 | * add just 1 reference count for the SSL_CTX's session cache even though | |
638 | * it has two ways of access: each session is in a doubly linked list and | |
639 | * an lhash | |
640 | */ | |
16203f7b | 641 | SSL_SESSION_up_ref(c); |
0f113f3e MC |
642 | /* |
643 | * if session c is in already in cache, we take back the increment later | |
644 | */ | |
645 | ||
16203f7b | 646 | CRYPTO_THREAD_write_lock(ctx->lock); |
0f113f3e MC |
647 | s = lh_SSL_SESSION_insert(ctx->sessions, c); |
648 | ||
649 | /* | |
650 | * s != NULL iff we already had a session with the given PID. In this | |
651 | * case, s == c should hold (then we did not really modify | |
652 | * ctx->sessions), or we're in trouble. | |
653 | */ | |
654 | if (s != NULL && s != c) { | |
655 | /* We *are* in trouble ... */ | |
656 | SSL_SESSION_list_remove(ctx, s); | |
657 | SSL_SESSION_free(s); | |
658 | /* | |
659 | * ... so pretend the other session did not exist in cache (we cannot | |
660 | * handle two SSL_SESSION structures with identical session ID in the | |
661 | * same cache, which could happen e.g. when two threads concurrently | |
662 | * obtain the same session from an external cache) | |
663 | */ | |
664 | s = NULL; | |
38088ce9 BE |
665 | } else if (s == NULL && |
666 | lh_SSL_SESSION_retrieve(ctx->sessions, c) == NULL) { | |
667 | /* s == NULL can also mean OOM error in lh_SSL_SESSION_insert ... */ | |
668 | ||
669 | /* | |
670 | * ... so take back the extra reference and also don't add | |
671 | * the session to the SSL_SESSION_list at this time | |
672 | */ | |
673 | s = c; | |
0f113f3e MC |
674 | } |
675 | ||
676 | /* Put at the head of the queue unless it is already in the cache */ | |
677 | if (s == NULL) | |
678 | SSL_SESSION_list_add(ctx, c); | |
679 | ||
680 | if (s != NULL) { | |
681 | /* | |
682 | * existing cache entry -- decrement previously incremented reference | |
683 | * count because it already takes into account the cache | |
684 | */ | |
685 | ||
686 | SSL_SESSION_free(s); /* s == c */ | |
687 | ret = 0; | |
688 | } else { | |
689 | /* | |
690 | * new cache entry -- remove old ones if cache has become too large | |
691 | */ | |
692 | ||
693 | ret = 1; | |
694 | ||
695 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) { | |
a230b26e | 696 | while (SSL_CTX_sess_number(ctx) > SSL_CTX_sess_get_cache_size(ctx)) { |
0f113f3e MC |
697 | if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) |
698 | break; | |
699 | else | |
9ef9088c | 700 | tsan_counter(&ctx->stats.sess_cache_full); |
0f113f3e MC |
701 | } |
702 | } | |
703 | } | |
16203f7b AG |
704 | CRYPTO_THREAD_unlock(ctx->lock); |
705 | return ret; | |
0f113f3e | 706 | } |
d02b48c6 | 707 | |
6b691a5c | 708 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
801294f8 | 709 | { |
0f113f3e | 710 | return remove_session_lock(ctx, c, 1); |
801294f8 DSH |
711 | } |
712 | ||
0fda2e37 | 713 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) |
0f113f3e MC |
714 | { |
715 | SSL_SESSION *r; | |
716 | int ret = 0; | |
717 | ||
718 | if ((c != NULL) && (c->session_id_length != 0)) { | |
719 | if (lck) | |
16203f7b | 720 | CRYPTO_THREAD_write_lock(ctx->lock); |
66d7de16 | 721 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) != NULL) { |
0f113f3e | 722 | ret = 1; |
66d7de16 MC |
723 | r = lh_SSL_SESSION_delete(ctx->sessions, r); |
724 | SSL_SESSION_list_remove(ctx, r); | |
0f113f3e | 725 | } |
e4612d02 | 726 | c->not_resumable = 1; |
0f113f3e MC |
727 | |
728 | if (lck) | |
16203f7b | 729 | CRYPTO_THREAD_unlock(ctx->lock); |
0f113f3e | 730 | |
e4612d02 MC |
731 | if (ctx->remove_session_cb != NULL) |
732 | ctx->remove_session_cb(ctx, c); | |
c0a58e03 MH |
733 | |
734 | if (ret) | |
735 | SSL_SESSION_free(r); | |
0f113f3e MC |
736 | } else |
737 | ret = 0; | |
26a7d938 | 738 | return ret; |
0f113f3e | 739 | } |
d02b48c6 | 740 | |
6b691a5c | 741 | void SSL_SESSION_free(SSL_SESSION *ss) |
0f113f3e MC |
742 | { |
743 | int i; | |
d02b48c6 | 744 | |
e6e9170d RS |
745 | if (ss == NULL) |
746 | return; | |
2f545ae4 | 747 | CRYPTO_DOWN_REF(&ss->references, &i, ss->lock); |
f3f1cf84 | 748 | REF_PRINT_COUNT("SSL_SESSION", ss); |
0f113f3e MC |
749 | if (i > 0) |
750 | return; | |
f3f1cf84 | 751 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 752 | |
0f113f3e | 753 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
58964a49 | 754 | |
cbe29648 RS |
755 | OPENSSL_cleanse(ss->master_key, sizeof(ss->master_key)); |
756 | OPENSSL_cleanse(ss->session_id, sizeof(ss->session_id)); | |
222561fe | 757 | X509_free(ss->peer); |
c34b0f99 | 758 | sk_X509_pop_free(ss->peer_chain, X509_free); |
aff8c126 RS |
759 | OPENSSL_free(ss->ext.hostname); |
760 | OPENSSL_free(ss->ext.tick); | |
ddac1974 | 761 | #ifndef OPENSSL_NO_PSK |
25aaa98a RS |
762 | OPENSSL_free(ss->psk_identity_hint); |
763 | OPENSSL_free(ss->psk_identity); | |
edc032b5 BL |
764 | #endif |
765 | #ifndef OPENSSL_NO_SRP | |
25aaa98a | 766 | OPENSSL_free(ss->srp_username); |
ed3883d2 | 767 | #endif |
f6370040 | 768 | OPENSSL_free(ss->ext.alpn_selected); |
df0fed9a | 769 | OPENSSL_free(ss->ticket_appdata); |
16203f7b | 770 | CRYPTO_THREAD_lock_free(ss->lock); |
4b45c6e5 | 771 | OPENSSL_clear_free(ss, sizeof(*ss)); |
0f113f3e | 772 | } |
d02b48c6 | 773 | |
16203f7b AG |
774 | int SSL_SESSION_up_ref(SSL_SESSION *ss) |
775 | { | |
776 | int i; | |
777 | ||
2f545ae4 | 778 | if (CRYPTO_UP_REF(&ss->references, &i, ss->lock) <= 0) |
16203f7b AG |
779 | return 0; |
780 | ||
781 | REF_PRINT_COUNT("SSL_SESSION", ss); | |
782 | REF_ASSERT_ISNT(i < 2); | |
783 | return ((i > 1) ? 1 : 0); | |
784 | } | |
785 | ||
6b691a5c | 786 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
0f113f3e | 787 | { |
e70656cf MC |
788 | ssl_clear_bad_session(s); |
789 | if (s->ctx->method != s->method) { | |
790 | if (!SSL_set_ssl_method(s, s->ctx->method)) | |
791 | return 0; | |
792 | } | |
0f113f3e | 793 | |
e70656cf | 794 | if (session != NULL) { |
16203f7b | 795 | SSL_SESSION_up_ref(session); |
e70656cf | 796 | s->verify_result = session->verify_result; |
0f113f3e | 797 | } |
e70656cf MC |
798 | SSL_SESSION_free(s->session); |
799 | s->session = session; | |
800 | ||
801 | return 1; | |
0f113f3e | 802 | } |
d02b48c6 | 803 | |
fddfc0af RG |
804 | int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid, |
805 | unsigned int sid_len) | |
806 | { | |
807 | if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) { | |
6849b73c | 808 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_TOO_LONG); |
fddfc0af RG |
809 | return 0; |
810 | } | |
811 | s->session_id_length = sid_len; | |
6aad9393 RG |
812 | if (sid != s->session_id) |
813 | memcpy(s->session_id, sid, sid_len); | |
fddfc0af RG |
814 | return 1; |
815 | } | |
816 | ||
6b691a5c | 817 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
0f113f3e MC |
818 | { |
819 | if (s == NULL) | |
26a7d938 | 820 | return 0; |
0f113f3e | 821 | s->timeout = t; |
208fb891 | 822 | return 1; |
0f113f3e | 823 | } |
d02b48c6 | 824 | |
0821bcd4 | 825 | long SSL_SESSION_get_timeout(const SSL_SESSION *s) |
0f113f3e MC |
826 | { |
827 | if (s == NULL) | |
26a7d938 K |
828 | return 0; |
829 | return s->timeout; | |
0f113f3e | 830 | } |
d02b48c6 | 831 | |
0821bcd4 | 832 | long SSL_SESSION_get_time(const SSL_SESSION *s) |
0f113f3e MC |
833 | { |
834 | if (s == NULL) | |
26a7d938 K |
835 | return 0; |
836 | return s->time; | |
0f113f3e | 837 | } |
d02b48c6 | 838 | |
6b691a5c | 839 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
0f113f3e MC |
840 | { |
841 | if (s == NULL) | |
26a7d938 | 842 | return 0; |
0f113f3e | 843 | s->time = t; |
26a7d938 | 844 | return t; |
0f113f3e | 845 | } |
d02b48c6 | 846 | |
bd01f649 TS |
847 | int SSL_SESSION_get_protocol_version(const SSL_SESSION *s) |
848 | { | |
bd01f649 TS |
849 | return s->ssl_version; |
850 | } | |
851 | ||
5a43d511 MC |
852 | int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version) |
853 | { | |
854 | s->ssl_version = version; | |
855 | return 1; | |
856 | } | |
857 | ||
e9281323 RS |
858 | const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s) |
859 | { | |
860 | return s->cipher; | |
861 | } | |
1a993d1d MC |
862 | |
863 | int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher) | |
864 | { | |
865 | s->cipher = cipher; | |
866 | return 1; | |
867 | } | |
e9281323 | 868 | |
4b6b8487 LC |
869 | const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s) |
870 | { | |
aff8c126 | 871 | return s->ext.hostname; |
4b6b8487 LC |
872 | } |
873 | ||
67738645 MC |
874 | int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname) |
875 | { | |
876 | OPENSSL_free(s->ext.hostname); | |
877 | if (hostname == NULL) { | |
878 | s->ext.hostname = NULL; | |
879 | return 1; | |
880 | } | |
881 | s->ext.hostname = OPENSSL_strdup(hostname); | |
882 | ||
883 | return s->ext.hostname != NULL; | |
884 | } | |
885 | ||
f2baac27 MC |
886 | int SSL_SESSION_has_ticket(const SSL_SESSION *s) |
887 | { | |
aff8c126 | 888 | return (s->ext.ticklen > 0) ? 1 : 0; |
f2baac27 MC |
889 | } |
890 | ||
891 | unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s) | |
892 | { | |
aff8c126 | 893 | return s->ext.tick_lifetime_hint; |
f2baac27 MC |
894 | } |
895 | ||
48593cb1 | 896 | void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick, |
a230b26e | 897 | size_t *len) |
b7c9187b | 898 | { |
aff8c126 | 899 | *len = s->ext.ticklen; |
61986d32 | 900 | if (tick != NULL) |
aff8c126 | 901 | *tick = s->ext.tick; |
b7c9187b MC |
902 | } |
903 | ||
fcc47578 MC |
904 | uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s) |
905 | { | |
906 | return s->ext.max_early_data; | |
907 | } | |
908 | ||
98e1d934 MC |
909 | int SSL_SESSION_set_max_early_data(SSL_SESSION *s, uint32_t max_early_data) |
910 | { | |
911 | s->ext.max_early_data = max_early_data; | |
912 | ||
913 | return 1; | |
914 | } | |
915 | ||
67738645 MC |
916 | void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s, |
917 | const unsigned char **alpn, | |
918 | size_t *len) | |
919 | { | |
920 | *alpn = s->ext.alpn_selected; | |
921 | *len = s->ext.alpn_selected_len; | |
922 | } | |
923 | ||
924 | int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s, const unsigned char *alpn, | |
925 | size_t len) | |
926 | { | |
927 | OPENSSL_free(s->ext.alpn_selected); | |
928 | if (alpn == NULL || len == 0) { | |
929 | s->ext.alpn_selected = NULL; | |
930 | s->ext.alpn_selected_len = 0; | |
931 | return 1; | |
932 | } | |
933 | s->ext.alpn_selected = OPENSSL_memdup(alpn, len); | |
934 | if (s->ext.alpn_selected == NULL) { | |
935 | s->ext.alpn_selected_len = 0; | |
936 | return 0; | |
937 | } | |
938 | s->ext.alpn_selected_len = len; | |
939 | ||
940 | return 1; | |
941 | } | |
942 | ||
08557cf2 | 943 | X509 *SSL_SESSION_get0_peer(SSL_SESSION *s) |
0f113f3e MC |
944 | { |
945 | return s->peer; | |
946 | } | |
947 | ||
948 | int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx, | |
949 | unsigned int sid_ctx_len) | |
950 | { | |
951 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
6849b73c | 952 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); |
0f113f3e MC |
953 | return 0; |
954 | } | |
955 | s->sid_ctx_length = sid_ctx_len; | |
6aad9393 RG |
956 | if (sid_ctx != s->sid_ctx) |
957 | memcpy(s->sid_ctx, sid_ctx, sid_ctx_len); | |
0f113f3e MC |
958 | |
959 | return 1; | |
960 | } | |
08557cf2 | 961 | |
e586eac8 MC |
962 | int SSL_SESSION_is_resumable(const SSL_SESSION *s) |
963 | { | |
964 | /* | |
965 | * In the case of EAP-FAST, we can have a pre-shared "ticket" without a | |
966 | * session ID. | |
967 | */ | |
968 | return !s->not_resumable | |
969 | && (s->session_id_length > 0 || s->ext.ticklen > 0); | |
970 | } | |
971 | ||
6b691a5c | 972 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
0f113f3e MC |
973 | { |
974 | long l; | |
975 | if (s == NULL) | |
26a7d938 | 976 | return 0; |
0f113f3e MC |
977 | l = s->session_timeout; |
978 | s->session_timeout = t; | |
26a7d938 | 979 | return l; |
0f113f3e | 980 | } |
413c4f45 | 981 | |
0821bcd4 | 982 | long SSL_CTX_get_timeout(const SSL_CTX *s) |
0f113f3e MC |
983 | { |
984 | if (s == NULL) | |
26a7d938 K |
985 | return 0; |
986 | return s->session_timeout; | |
0f113f3e | 987 | } |
413c4f45 | 988 | |
0f113f3e | 989 | int SSL_set_session_secret_cb(SSL *s, |
aff8c126 | 990 | tls_session_secret_cb_fn tls_session_secret_cb, |
0f113f3e MC |
991 | void *arg) |
992 | { | |
993 | if (s == NULL) | |
26a7d938 | 994 | return 0; |
aff8c126 RS |
995 | s->ext.session_secret_cb = tls_session_secret_cb; |
996 | s->ext.session_secret_cb_arg = arg; | |
208fb891 | 997 | return 1; |
0f113f3e | 998 | } |
12bf56c0 DSH |
999 | |
1000 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, | |
0f113f3e MC |
1001 | void *arg) |
1002 | { | |
1003 | if (s == NULL) | |
26a7d938 | 1004 | return 0; |
aff8c126 RS |
1005 | s->ext.session_ticket_cb = cb; |
1006 | s->ext.session_ticket_cb_arg = arg; | |
208fb891 | 1007 | return 1; |
0f113f3e | 1008 | } |
12bf56c0 DSH |
1009 | |
1010 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) | |
0f113f3e MC |
1011 | { |
1012 | if (s->version >= TLS1_VERSION) { | |
aff8c126 RS |
1013 | OPENSSL_free(s->ext.session_ticket); |
1014 | s->ext.session_ticket = NULL; | |
1015 | s->ext.session_ticket = | |
0f113f3e | 1016 | OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); |
aff8c126 | 1017 | if (s->ext.session_ticket == NULL) { |
6849b73c | 1018 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
1019 | return 0; |
1020 | } | |
1021 | ||
1ed327f7 | 1022 | if (ext_data != NULL) { |
aff8c126 RS |
1023 | s->ext.session_ticket->length = ext_len; |
1024 | s->ext.session_ticket->data = s->ext.session_ticket + 1; | |
1025 | memcpy(s->ext.session_ticket->data, ext_data, ext_len); | |
0f113f3e | 1026 | } else { |
aff8c126 RS |
1027 | s->ext.session_ticket->length = 0; |
1028 | s->ext.session_ticket->data = NULL; | |
0f113f3e MC |
1029 | } |
1030 | ||
1031 | return 1; | |
1032 | } | |
1033 | ||
1034 | return 0; | |
1035 | } | |
0f113f3e MC |
1036 | |
1037 | typedef struct timeout_param_st { | |
1038 | SSL_CTX *ctx; | |
1039 | long time; | |
1040 | LHASH_OF(SSL_SESSION) *cache; | |
1041 | } TIMEOUT_PARAM; | |
d02b48c6 | 1042 | |
2a056de8 | 1043 | static void timeout_cb(SSL_SESSION *s, TIMEOUT_PARAM *p) |
0f113f3e MC |
1044 | { |
1045 | if ((p->time == 0) || (p->time > (s->time + s->timeout))) { /* timeout */ | |
1046 | /* | |
1047 | * The reason we don't call SSL_CTX_remove_session() is to save on | |
1048 | * locking overhead | |
1049 | */ | |
1050 | (void)lh_SSL_SESSION_delete(p->cache, s); | |
1051 | SSL_SESSION_list_remove(p->ctx, s); | |
1052 | s->not_resumable = 1; | |
1053 | if (p->ctx->remove_session_cb != NULL) | |
1054 | p->ctx->remove_session_cb(p->ctx, s); | |
1055 | SSL_SESSION_free(s); | |
1056 | } | |
1057 | } | |
d02b48c6 | 1058 | |
2a056de8 | 1059 | IMPLEMENT_LHASH_DOALL_ARG(SSL_SESSION, TIMEOUT_PARAM); |
3c914840 | 1060 | |
6b691a5c | 1061 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
0f113f3e MC |
1062 | { |
1063 | unsigned long i; | |
1064 | TIMEOUT_PARAM tp; | |
1065 | ||
1066 | tp.ctx = s; | |
1067 | tp.cache = s->sessions; | |
1068 | if (tp.cache == NULL) | |
1069 | return; | |
1070 | tp.time = t; | |
16203f7b | 1071 | CRYPTO_THREAD_write_lock(s->lock); |
739a1eb1 RS |
1072 | i = lh_SSL_SESSION_get_down_load(s->sessions); |
1073 | lh_SSL_SESSION_set_down_load(s->sessions, 0); | |
2a056de8 | 1074 | lh_SSL_SESSION_doall_TIMEOUT_PARAM(tp.cache, timeout_cb, &tp); |
739a1eb1 | 1075 | lh_SSL_SESSION_set_down_load(s->sessions, i); |
16203f7b | 1076 | CRYPTO_THREAD_unlock(s->lock); |
0f113f3e | 1077 | } |
d02b48c6 | 1078 | |
6b691a5c | 1079 | int ssl_clear_bad_session(SSL *s) |
0f113f3e MC |
1080 | { |
1081 | if ((s->session != NULL) && | |
1082 | !(s->shutdown & SSL_SENT_SHUTDOWN) && | |
1083 | !(SSL_in_init(s) || SSL_in_before(s))) { | |
e2bb9b9b | 1084 | SSL_CTX_remove_session(s->session_ctx, s->session); |
208fb891 | 1085 | return 1; |
0f113f3e | 1086 | } else |
26a7d938 | 1087 | return 0; |
0f113f3e | 1088 | } |
58964a49 RE |
1089 | |
1090 | /* locked by SSL_CTX in the calling function */ | |
6b691a5c | 1091 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1092 | { |
1093 | if ((s->next == NULL) || (s->prev == NULL)) | |
1094 | return; | |
1095 | ||
1096 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) { | |
1097 | /* last element in list */ | |
1098 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1099 | /* only one element in list */ | |
1100 | ctx->session_cache_head = NULL; | |
1101 | ctx->session_cache_tail = NULL; | |
1102 | } else { | |
1103 | ctx->session_cache_tail = s->prev; | |
1104 | s->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1105 | } | |
1106 | } else { | |
1107 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1108 | /* first element in list */ | |
1109 | ctx->session_cache_head = s->next; | |
1110 | s->next->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1111 | } else { | |
1112 | /* middle of list */ | |
1113 | s->next->prev = s->prev; | |
1114 | s->prev->next = s->next; | |
1115 | } | |
1116 | } | |
1117 | s->prev = s->next = NULL; | |
1118 | } | |
58964a49 | 1119 | |
6b691a5c | 1120 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1121 | { |
1122 | if ((s->next != NULL) && (s->prev != NULL)) | |
1123 | SSL_SESSION_list_remove(ctx, s); | |
1124 | ||
1125 | if (ctx->session_cache_head == NULL) { | |
1126 | ctx->session_cache_head = s; | |
1127 | ctx->session_cache_tail = s; | |
1128 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1129 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1130 | } else { | |
1131 | s->next = ctx->session_cache_head; | |
1132 | s->next->prev = s; | |
1133 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1134 | ctx->session_cache_head = s; | |
1135 | } | |
1136 | } | |
58964a49 | 1137 | |
7806f3dd | 1138 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
a230b26e | 1139 | int (*cb) (struct ssl_st *ssl, SSL_SESSION *sess)) |
0f113f3e MC |
1140 | { |
1141 | ctx->new_session_cb = cb; | |
1142 | } | |
7806f3dd | 1143 | |
0f113f3e MC |
1144 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (SSL *ssl, SSL_SESSION *sess) { |
1145 | return ctx->new_session_cb; | |
1146 | } | |
7806f3dd NL |
1147 | |
1148 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1149 | void (*cb) (SSL_CTX *ctx, SSL_SESSION *sess)) |
1150 | { | |
1151 | ctx->remove_session_cb = cb; | |
1152 | } | |
7806f3dd | 1153 | |
0f113f3e MC |
1154 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (SSL_CTX *ctx, |
1155 | SSL_SESSION *sess) { | |
1156 | return ctx->remove_session_cb; | |
1157 | } | |
7806f3dd NL |
1158 | |
1159 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, | |
0f113f3e | 1160 | SSL_SESSION *(*cb) (struct ssl_st *ssl, |
b6981744 EK |
1161 | const unsigned char *data, |
1162 | int len, int *copy)) | |
0f113f3e MC |
1163 | { |
1164 | ctx->get_session_cb = cb; | |
1165 | } | |
1166 | ||
1167 | SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (SSL *ssl, | |
a230b26e EK |
1168 | const unsigned char |
1169 | *data, int len, | |
1170 | int *copy) { | |
0f113f3e MC |
1171 | return ctx->get_session_cb; |
1172 | } | |
1173 | ||
1174 | void SSL_CTX_set_info_callback(SSL_CTX *ctx, | |
1175 | void (*cb) (const SSL *ssl, int type, int val)) | |
1176 | { | |
1177 | ctx->info_callback = cb; | |
1178 | } | |
1179 | ||
1180 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type, | |
1181 | int val) { | |
1182 | return ctx->info_callback; | |
1183 | } | |
7806f3dd NL |
1184 | |
1185 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1186 | int (*cb) (SSL *ssl, X509 **x509, |
1187 | EVP_PKEY **pkey)) | |
1188 | { | |
1189 | ctx->client_cert_cb = cb; | |
1190 | } | |
7806f3dd | 1191 | |
0f113f3e MC |
1192 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509, |
1193 | EVP_PKEY **pkey) { | |
1194 | return ctx->client_cert_cb; | |
1195 | } | |
7806f3dd NL |
1196 | |
1197 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1198 | int (*cb) (SSL *ssl, |
1199 | unsigned char *cookie, | |
1200 | unsigned int *cookie_len)) | |
1201 | { | |
1202 | ctx->app_gen_cookie_cb = cb; | |
1203 | } | |
7806f3dd NL |
1204 | |
1205 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, | |
a230b26e EK |
1206 | int (*cb) (SSL *ssl, |
1207 | const unsigned char *cookie, | |
0f113f3e MC |
1208 | unsigned int cookie_len)) |
1209 | { | |
1210 | ctx->app_verify_cookie_cb = cb; | |
1211 | } | |
7806f3dd | 1212 | |
df0fed9a TS |
1213 | int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len) |
1214 | { | |
1215 | OPENSSL_free(ss->ticket_appdata); | |
1216 | ss->ticket_appdata_len = 0; | |
1217 | if (data == NULL || len == 0) { | |
1218 | ss->ticket_appdata = NULL; | |
1219 | return 1; | |
1220 | } | |
1221 | ss->ticket_appdata = OPENSSL_memdup(data, len); | |
1222 | if (ss->ticket_appdata != NULL) { | |
1223 | ss->ticket_appdata_len = len; | |
1224 | return 1; | |
1225 | } | |
1226 | return 0; | |
1227 | } | |
1228 | ||
1229 | int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len) | |
1230 | { | |
1231 | *data = ss->ticket_appdata; | |
1232 | *len = ss->ticket_appdata_len; | |
1233 | return 1; | |
1234 | } | |
1235 | ||
3fa2812f BS |
1236 | void SSL_CTX_set_stateless_cookie_generate_cb( |
1237 | SSL_CTX *ctx, | |
1238 | int (*cb) (SSL *ssl, | |
1239 | unsigned char *cookie, | |
1240 | size_t *cookie_len)) | |
1241 | { | |
1242 | ctx->gen_stateless_cookie_cb = cb; | |
1243 | } | |
1244 | ||
1245 | void SSL_CTX_set_stateless_cookie_verify_cb( | |
1246 | SSL_CTX *ctx, | |
1247 | int (*cb) (SSL *ssl, | |
1248 | const unsigned char *cookie, | |
1249 | size_t cookie_len)) | |
1250 | { | |
1251 | ctx->verify_stateless_cookie_cb = cb; | |
1252 | } | |
1253 | ||
a230b26e | 1254 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) |