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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 | ||
340fe504 | 29 | __owur static ossl_inline int sess_timedout(time_t t, SSL_SESSION *ss) |
25959e04 | 30 | { |
340fe504 | 31 | return ossl_time_compare(ossl_time_from_time_t(t), ss->calc_timeout) > 0; |
25959e04 TS |
32 | } |
33 | ||
34 | /* | |
35 | * Returns -1/0/+1 as other XXXcmp-type functions | |
340fe504 | 36 | * Takes calculated timeout into consideration |
25959e04 | 37 | */ |
340fe504 | 38 | __owur static ossl_inline int timeoutcmp(SSL_SESSION *a, SSL_SESSION *b) |
25959e04 | 39 | { |
340fe504 | 40 | return ossl_time_compare(a->calc_timeout, b->calc_timeout); |
25959e04 TS |
41 | } |
42 | ||
43 | /* | |
340fe504 | 44 | * Calculates effective timeout |
25959e04 TS |
45 | * Locking must be done by the caller of this function |
46 | */ | |
47 | void ssl_session_calculate_timeout(SSL_SESSION *ss) | |
48 | { | |
49 | /* Force positive timeout */ | |
50 | if (ss->timeout < 0) | |
51 | ss->timeout = 0; | |
340fe504 TS |
52 | |
53 | ss->calc_timeout = ossl_time_add(ossl_time_from_time_t(ss->time), | |
54 | ossl_time_from_time_t(ss->timeout)); | |
25959e04 TS |
55 | } |
56 | ||
e7a28df7 | 57 | /* |
e586eac8 MC |
58 | * SSL_get_session() and SSL_get1_session() are problematic in TLS1.3 because, |
59 | * unlike in earlier protocol versions, the session ticket may not have been | |
60 | * sent yet even though a handshake has finished. The session ticket data could | |
61 | * come in sometime later...or even change if multiple session ticket messages | |
62 | * are sent from the server. The preferred way for applications to obtain | |
63 | * a resumable session is to use SSL_CTX_sess_set_new_cb(). | |
e7a28df7 MC |
64 | */ |
65 | ||
0821bcd4 | 66 | SSL_SESSION *SSL_get_session(const SSL *ssl) |
52732b38 | 67 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ |
0f113f3e | 68 | { |
38b051a1 TM |
69 | const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl); |
70 | ||
71 | if (sc == NULL) | |
72 | return NULL; | |
73 | ||
74 | return sc->session; | |
0f113f3e | 75 | } |
52732b38 BM |
76 | |
77 | SSL_SESSION *SSL_get1_session(SSL *ssl) | |
78 | /* variant of SSL_get_session: caller really gets something */ | |
0f113f3e MC |
79 | { |
80 | SSL_SESSION *sess; | |
38b051a1 | 81 | |
0f113f3e MC |
82 | /* |
83 | * Need to lock this all up rather than just use CRYPTO_add so that | |
84 | * somebody doesn't free ssl->session between when we check it's non-null | |
85 | * and when we up the reference count. | |
86 | */ | |
cd3f8c1b RS |
87 | if (!CRYPTO_THREAD_read_lock(ssl->lock)) |
88 | return NULL; | |
38b051a1 TM |
89 | sess = SSL_get_session(ssl); |
90 | if (sess != NULL) | |
16203f7b AG |
91 | SSL_SESSION_up_ref(sess); |
92 | CRYPTO_THREAD_unlock(ssl->lock); | |
93 | return sess; | |
0f113f3e MC |
94 | } |
95 | ||
6b691a5c | 96 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
0f113f3e | 97 | { |
26a7d938 | 98 | return CRYPTO_set_ex_data(&s->ex_data, idx, arg); |
0f113f3e | 99 | } |
58964a49 | 100 | |
0821bcd4 | 101 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) |
0f113f3e | 102 | { |
26a7d938 | 103 | return CRYPTO_get_ex_data(&s->ex_data, idx); |
0f113f3e | 104 | } |
58964a49 | 105 | |
6b691a5c | 106 | SSL_SESSION *SSL_SESSION_new(void) |
0f113f3e MC |
107 | { |
108 | SSL_SESSION *ss; | |
109 | ||
534a43ff MC |
110 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) |
111 | return NULL; | |
112 | ||
b51bce94 | 113 | ss = OPENSSL_zalloc(sizeof(*ss)); |
0f113f3e | 114 | if (ss == NULL) { |
6849b73c | 115 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
16203f7b | 116 | return NULL; |
0f113f3e | 117 | } |
0f113f3e MC |
118 | |
119 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ | |
120 | ss->references = 1; | |
121 | ss->timeout = 60 * 5 + 4; /* 5 minute timeout by default */ | |
25959e04 TS |
122 | ss->time = time(NULL); |
123 | ssl_session_calculate_timeout(ss); | |
16203f7b AG |
124 | ss->lock = CRYPTO_THREAD_lock_new(); |
125 | if (ss->lock == NULL) { | |
6849b73c | 126 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
16203f7b AG |
127 | OPENSSL_free(ss); |
128 | return NULL; | |
129 | } | |
130 | ||
25a807bc F |
131 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data)) { |
132 | CRYPTO_THREAD_lock_free(ss->lock); | |
133 | OPENSSL_free(ss); | |
134 | return NULL; | |
135 | } | |
16203f7b | 136 | return ss; |
0f113f3e | 137 | } |
d02b48c6 | 138 | |
9fdcc21f | 139 | SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src) |
07927bed MC |
140 | { |
141 | return ssl_session_dup(src, 1); | |
142 | } | |
143 | ||
98ece4ee MC |
144 | /* |
145 | * Create a new SSL_SESSION and duplicate the contents of |src| into it. If | |
146 | * ticket == 0 then no ticket information is duplicated, otherwise it is. | |
147 | */ | |
9fdcc21f | 148 | SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket) |
98ece4ee MC |
149 | { |
150 | SSL_SESSION *dest; | |
151 | ||
8ad36917 | 152 | dest = OPENSSL_malloc(sizeof(*dest)); |
98ece4ee MC |
153 | if (dest == NULL) { |
154 | goto err; | |
155 | } | |
156 | memcpy(dest, src, sizeof(*dest)); | |
157 | ||
708cf593 MC |
158 | /* |
159 | * Set the various pointers to NULL so that we can call SSL_SESSION_free in | |
160 | * the case of an error whilst halfway through constructing dest | |
161 | */ | |
162 | #ifndef OPENSSL_NO_PSK | |
163 | dest->psk_identity_hint = NULL; | |
164 | dest->psk_identity = NULL; | |
165 | #endif | |
aff8c126 | 166 | dest->ext.hostname = NULL; |
aff8c126 | 167 | dest->ext.tick = NULL; |
eed3ec90 | 168 | dest->ext.alpn_selected = NULL; |
708cf593 MC |
169 | #ifndef OPENSSL_NO_SRP |
170 | dest->srp_username = NULL; | |
171 | #endif | |
1ee21259 TS |
172 | dest->peer_chain = NULL; |
173 | dest->peer = NULL; | |
df0fed9a | 174 | dest->ticket_appdata = NULL; |
51598215 | 175 | memset(&dest->ex_data, 0, sizeof(dest->ex_data)); |
9b6a8254 | 176 | |
708cf593 MC |
177 | /* We deliberately don't copy the prev and next pointers */ |
178 | dest->prev = NULL; | |
179 | dest->next = NULL; | |
180 | ||
181 | dest->references = 1; | |
182 | ||
16203f7b AG |
183 | dest->lock = CRYPTO_THREAD_lock_new(); |
184 | if (dest->lock == NULL) | |
185 | goto err; | |
186 | ||
1ee21259 TS |
187 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, dest, &dest->ex_data)) |
188 | goto err; | |
189 | ||
190 | if (src->peer != NULL) { | |
191 | if (!X509_up_ref(src->peer)) | |
192 | goto err; | |
193 | dest->peer = src->peer; | |
194 | } | |
708cf593 | 195 | |
36f038f1 DSH |
196 | if (src->peer_chain != NULL) { |
197 | dest->peer_chain = X509_chain_up_ref(src->peer_chain); | |
198 | if (dest->peer_chain == NULL) | |
199 | goto err; | |
200 | } | |
98ece4ee MC |
201 | #ifndef OPENSSL_NO_PSK |
202 | if (src->psk_identity_hint) { | |
7644a9ae | 203 | dest->psk_identity_hint = OPENSSL_strdup(src->psk_identity_hint); |
98ece4ee MC |
204 | if (dest->psk_identity_hint == NULL) { |
205 | goto err; | |
206 | } | |
98ece4ee MC |
207 | } |
208 | if (src->psk_identity) { | |
7644a9ae | 209 | dest->psk_identity = OPENSSL_strdup(src->psk_identity); |
98ece4ee MC |
210 | if (dest->psk_identity == NULL) { |
211 | goto err; | |
212 | } | |
98ece4ee MC |
213 | } |
214 | #endif | |
215 | ||
98ece4ee | 216 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, |
a230b26e | 217 | &dest->ex_data, &src->ex_data)) { |
98ece4ee MC |
218 | goto err; |
219 | } | |
220 | ||
aff8c126 RS |
221 | if (src->ext.hostname) { |
222 | dest->ext.hostname = OPENSSL_strdup(src->ext.hostname); | |
223 | if (dest->ext.hostname == NULL) { | |
98ece4ee MC |
224 | goto err; |
225 | } | |
98ece4ee | 226 | } |
98ece4ee | 227 | |
1ee21259 | 228 | if (ticket != 0 && src->ext.tick != NULL) { |
aff8c126 RS |
229 | dest->ext.tick = |
230 | OPENSSL_memdup(src->ext.tick, src->ext.ticklen); | |
231 | if (dest->ext.tick == NULL) | |
98ece4ee | 232 | goto err; |
708cf593 | 233 | } else { |
aff8c126 RS |
234 | dest->ext.tick_lifetime_hint = 0; |
235 | dest->ext.ticklen = 0; | |
98ece4ee MC |
236 | } |
237 | ||
27232cc3 MC |
238 | if (src->ext.alpn_selected != NULL) { |
239 | dest->ext.alpn_selected = OPENSSL_memdup(src->ext.alpn_selected, | |
240 | src->ext.alpn_selected_len); | |
241 | if (dest->ext.alpn_selected == NULL) | |
eed3ec90 | 242 | goto err; |
eed3ec90 TS |
243 | } |
244 | ||
98ece4ee | 245 | #ifndef OPENSSL_NO_SRP |
98ece4ee | 246 | if (src->srp_username) { |
7644a9ae | 247 | dest->srp_username = OPENSSL_strdup(src->srp_username); |
98ece4ee MC |
248 | if (dest->srp_username == NULL) { |
249 | goto err; | |
250 | } | |
98ece4ee MC |
251 | } |
252 | #endif | |
253 | ||
df0fed9a TS |
254 | if (src->ticket_appdata != NULL) { |
255 | dest->ticket_appdata = | |
256 | OPENSSL_memdup(src->ticket_appdata, src->ticket_appdata_len); | |
257 | if (dest->ticket_appdata == NULL) | |
258 | goto err; | |
259 | } | |
260 | ||
98ece4ee | 261 | return dest; |
a230b26e | 262 | err: |
6849b73c | 263 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
98ece4ee MC |
264 | SSL_SESSION_free(dest); |
265 | return NULL; | |
266 | } | |
267 | ||
a230b26e | 268 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) |
0f113f3e MC |
269 | { |
270 | if (len) | |
348240c6 | 271 | *len = (unsigned int)s->session_id_length; |
0f113f3e MC |
272 | return s->session_id; |
273 | } | |
fddfc0af RG |
274 | const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s, |
275 | unsigned int *len) | |
276 | { | |
277 | if (len != NULL) | |
348240c6 | 278 | *len = (unsigned int)s->sid_ctx_length; |
fddfc0af RG |
279 | return s->sid_ctx; |
280 | } | |
4879ec7b | 281 | |
f9b0b452 | 282 | unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s) |
0f113f3e MC |
283 | { |
284 | return s->compress_meth; | |
285 | } | |
286 | ||
287 | /* | |
288 | * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling | |
289 | * the ID with random junk repeatedly until we have no conflict is going to | |
290 | * complete in one iteration pretty much "most" of the time (btw: | |
291 | * understatement). So, if it takes us 10 iterations and we still can't avoid | |
292 | * a conflict - well that's a reasonable point to call it quits. Either the | |
293 | * RAND code is broken or someone is trying to open roughly very close to | |
294 | * 2^256 SSL sessions to our server. How you might store that many sessions | |
295 | * is perhaps a more interesting question ... | |
296 | */ | |
dc644fe2 GT |
297 | |
298 | #define MAX_SESS_ID_ATTEMPTS 10 | |
ae3947de | 299 | static int def_generate_session_id(SSL *ssl, unsigned char *id, |
0f113f3e | 300 | unsigned int *id_len) |
dc644fe2 | 301 | { |
0f113f3e MC |
302 | unsigned int retry = 0; |
303 | do | |
0f8815aa | 304 | if (RAND_bytes_ex(ssl->ctx->libctx, id, *id_len, 0) <= 0) |
0f113f3e MC |
305 | return 0; |
306 | while (SSL_has_matching_session_id(ssl, id, *id_len) && | |
307 | (++retry < MAX_SESS_ID_ATTEMPTS)) ; | |
308 | if (retry < MAX_SESS_ID_ATTEMPTS) | |
309 | return 1; | |
310 | /* else - woops a session_id match */ | |
311 | /* | |
312 | * XXX We should also check the external cache -- but the probability of | |
313 | * a collision is negligible, and we could not prevent the concurrent | |
314 | * creation of sessions with identical IDs since we currently don't have | |
315 | * means to atomically check whether a session ID already exists and make | |
316 | * a reservation for it if it does not (this problem applies to the | |
317 | * internal cache as well). | |
318 | */ | |
319 | return 0; | |
dc644fe2 GT |
320 | } |
321 | ||
38b051a1 | 322 | int ssl_generate_session_id(SSL_CONNECTION *s, SSL_SESSION *ss) |
a84e5c9a TS |
323 | { |
324 | unsigned int tmp; | |
325 | GEN_SESSION_CB cb = def_generate_session_id; | |
38b051a1 | 326 | SSL *ssl = SSL_CONNECTION_GET_SSL(s); |
a84e5c9a TS |
327 | |
328 | switch (s->version) { | |
329 | case SSL3_VERSION: | |
330 | case TLS1_VERSION: | |
331 | case TLS1_1_VERSION: | |
332 | case TLS1_2_VERSION: | |
333 | case TLS1_3_VERSION: | |
334 | case DTLS1_BAD_VER: | |
335 | case DTLS1_VERSION: | |
336 | case DTLS1_2_VERSION: | |
337 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
338 | break; | |
339 | default: | |
c48ffbcc | 340 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_UNSUPPORTED_SSL_VERSION); |
a84e5c9a TS |
341 | return 0; |
342 | } | |
343 | ||
344 | /*- | |
345 | * If RFC5077 ticket, use empty session ID (as server). | |
346 | * Note that: | |
347 | * (a) ssl_get_prev_session() does lookahead into the | |
348 | * ClientHello extensions to find the session ticket. | |
349 | * When ssl_get_prev_session() fails, statem_srvr.c calls | |
350 | * ssl_get_new_session() in tls_process_client_hello(). | |
351 | * At that point, it has not yet parsed the extensions, | |
352 | * however, because of the lookahead, it already knows | |
353 | * whether a ticket is expected or not. | |
354 | * | |
355 | * (b) statem_clnt.c calls ssl_get_new_session() before parsing | |
356 | * ServerHello extensions, and before recording the session | |
357 | * ID received from the server, so this block is a noop. | |
358 | */ | |
359 | if (s->ext.ticket_expected) { | |
360 | ss->session_id_length = 0; | |
361 | return 1; | |
362 | } | |
363 | ||
364 | /* Choose which callback will set the session ID */ | |
38b051a1 | 365 | if (!CRYPTO_THREAD_read_lock(SSL_CONNECTION_GET_SSL(s)->lock)) |
cd3f8c1b RS |
366 | return 0; |
367 | if (!CRYPTO_THREAD_read_lock(s->session_ctx->lock)) { | |
38b051a1 | 368 | CRYPTO_THREAD_unlock(ssl->lock); |
cd3f8c1b RS |
369 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
370 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); | |
371 | return 0; | |
372 | } | |
a84e5c9a TS |
373 | if (s->generate_session_id) |
374 | cb = s->generate_session_id; | |
375 | else if (s->session_ctx->generate_session_id) | |
376 | cb = s->session_ctx->generate_session_id; | |
377 | CRYPTO_THREAD_unlock(s->session_ctx->lock); | |
38b051a1 | 378 | CRYPTO_THREAD_unlock(ssl->lock); |
a84e5c9a TS |
379 | /* Choose a session ID */ |
380 | memset(ss->session_id, 0, ss->session_id_length); | |
381 | tmp = (int)ss->session_id_length; | |
38b051a1 | 382 | if (!cb(ssl, ss->session_id, &tmp)) { |
a84e5c9a | 383 | /* The callback failed */ |
c48ffbcc | 384 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 385 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); |
a84e5c9a TS |
386 | return 0; |
387 | } | |
388 | /* | |
389 | * Don't allow the callback to set the session length to zero. nor | |
390 | * set it higher than it was. | |
391 | */ | |
392 | if (tmp == 0 || tmp > ss->session_id_length) { | |
393 | /* The callback set an illegal length */ | |
c48ffbcc | 394 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 395 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); |
a84e5c9a TS |
396 | return 0; |
397 | } | |
398 | ss->session_id_length = tmp; | |
399 | /* Finally, check for a conflict */ | |
38b051a1 | 400 | if (SSL_has_matching_session_id(ssl, ss->session_id, |
a84e5c9a | 401 | (unsigned int)ss->session_id_length)) { |
c48ffbcc | 402 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_SSL_SESSION_ID_CONFLICT); |
a84e5c9a TS |
403 | return 0; |
404 | } | |
405 | ||
406 | return 1; | |
407 | } | |
408 | ||
38b051a1 | 409 | int ssl_get_new_session(SSL_CONNECTION *s, int session) |
0f113f3e MC |
410 | { |
411 | /* This gets used by clients and servers. */ | |
412 | ||
0f113f3e | 413 | SSL_SESSION *ss = NULL; |
0f113f3e | 414 | |
f63a17d6 | 415 | if ((ss = SSL_SESSION_new()) == NULL) { |
c48ffbcc | 416 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE); |
a84e5c9a | 417 | return 0; |
f63a17d6 | 418 | } |
0f113f3e MC |
419 | |
420 | /* If the context has a default timeout, use it */ | |
421 | if (s->session_ctx->session_timeout == 0) | |
38b051a1 | 422 | ss->timeout = SSL_get_default_timeout(SSL_CONNECTION_GET_SSL(s)); |
0f113f3e MC |
423 | else |
424 | ss->timeout = s->session_ctx->session_timeout; | |
a65c8d8f | 425 | ssl_session_calculate_timeout(ss); |
0f113f3e | 426 | |
62adbcee RS |
427 | SSL_SESSION_free(s->session); |
428 | s->session = NULL; | |
0f113f3e MC |
429 | |
430 | if (session) { | |
38b051a1 | 431 | if (SSL_CONNECTION_IS_TLS13(s)) { |
32305f88 MC |
432 | /* |
433 | * We generate the session id while constructing the | |
434 | * NewSessionTicket in TLSv1.3. | |
435 | */ | |
436 | ss->session_id_length = 0; | |
437 | } else if (!ssl_generate_session_id(s, ss)) { | |
f63a17d6 | 438 | /* SSLfatal() already called */ |
0f113f3e | 439 | SSL_SESSION_free(ss); |
a84e5c9a | 440 | return 0; |
0f113f3e | 441 | } |
e481f9b9 | 442 | |
0f113f3e MC |
443 | } else { |
444 | ss->session_id_length = 0; | |
445 | } | |
446 | ||
cbe29648 | 447 | if (s->sid_ctx_length > sizeof(ss->sid_ctx)) { |
c48ffbcc | 448 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
0f113f3e MC |
449 | SSL_SESSION_free(ss); |
450 | return 0; | |
451 | } | |
452 | memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length); | |
453 | ss->sid_ctx_length = s->sid_ctx_length; | |
454 | s->session = ss; | |
455 | ss->ssl_version = s->version; | |
456 | ss->verify_result = X509_V_OK; | |
457 | ||
e7f0d921 | 458 | /* If client supports extended master secret set it in session */ |
555cbb32 | 459 | if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) |
e7f0d921 DSH |
460 | ss->flags |= SSL_SESS_FLAG_EXTMS; |
461 | ||
a84e5c9a | 462 | return 1; |
0f113f3e | 463 | } |
d02b48c6 | 464 | |
38b051a1 TM |
465 | SSL_SESSION *lookup_sess_in_cache(SSL_CONNECTION *s, |
466 | const unsigned char *sess_id, | |
6cc0b3c2 MC |
467 | size_t sess_id_len) |
468 | { | |
469 | SSL_SESSION *ret = NULL; | |
6cc0b3c2 MC |
470 | |
471 | if ((s->session_ctx->session_cache_mode | |
472 | & SSL_SESS_CACHE_NO_INTERNAL_LOOKUP) == 0) { | |
473 | SSL_SESSION data; | |
474 | ||
475 | data.ssl_version = s->version; | |
476 | if (!ossl_assert(sess_id_len <= SSL_MAX_SSL_SESSION_ID_LENGTH)) | |
477 | return NULL; | |
478 | ||
479 | memcpy(data.session_id, sess_id, sess_id_len); | |
480 | data.session_id_length = sess_id_len; | |
481 | ||
cd3f8c1b RS |
482 | if (!CRYPTO_THREAD_read_lock(s->session_ctx->lock)) |
483 | return NULL; | |
6cc0b3c2 MC |
484 | ret = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data); |
485 | if (ret != NULL) { | |
486 | /* don't allow other threads to steal it: */ | |
487 | SSL_SESSION_up_ref(ret); | |
488 | } | |
489 | CRYPTO_THREAD_unlock(s->session_ctx->lock); | |
490 | if (ret == NULL) | |
acce0557 | 491 | ssl_tsan_counter(s->session_ctx, &s->session_ctx->stats.sess_miss); |
6cc0b3c2 MC |
492 | } |
493 | ||
494 | if (ret == NULL && s->session_ctx->get_session_cb != NULL) { | |
495 | int copy = 1; | |
496 | ||
38b051a1 TM |
497 | ret = s->session_ctx->get_session_cb(SSL_CONNECTION_GET_SSL(s), |
498 | sess_id, sess_id_len, ©); | |
6cc0b3c2 MC |
499 | |
500 | if (ret != NULL) { | |
acce0557 P |
501 | ssl_tsan_counter(s->session_ctx, |
502 | &s->session_ctx->stats.sess_cb_hit); | |
6cc0b3c2 MC |
503 | |
504 | /* | |
505 | * Increment reference count now if the session callback asks us | |
506 | * to do so (note that if the session structures returned by the | |
507 | * callback are shared between threads, it must handle the | |
508 | * reference count itself [i.e. copy == 0], or things won't be | |
509 | * thread-safe). | |
510 | */ | |
511 | if (copy) | |
512 | SSL_SESSION_up_ref(ret); | |
513 | ||
514 | /* | |
515 | * Add the externally cached session to the internal cache as | |
516 | * well if and only if we are supposed to. | |
517 | */ | |
518 | if ((s->session_ctx->session_cache_mode & | |
519 | SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0) { | |
520 | /* | |
521 | * Either return value of SSL_CTX_add_session should not | |
522 | * interrupt the session resumption process. The return | |
523 | * value is intentionally ignored. | |
524 | */ | |
525 | (void)SSL_CTX_add_session(s->session_ctx, ret); | |
526 | } | |
527 | } | |
528 | } | |
529 | ||
530 | return ret; | |
531 | } | |
532 | ||
3a83462d MC |
533 | /*- |
534 | * ssl_get_prev attempts to find an SSL_SESSION to be used to resume this | |
c519e89f BM |
535 | * connection. It is only called by servers. |
536 | * | |
de7d61d5 | 537 | * hello: The parsed ClientHello data |
c519e89f BM |
538 | * |
539 | * Returns: | |
1053a6e2 MC |
540 | * -1: fatal error |
541 | * 0: no session found | |
542 | * 1: a session may have been found. | |
c519e89f BM |
543 | * |
544 | * Side effects: | |
545 | * - If a session is found then s->session is pointed at it (after freeing an | |
546 | * existing session if need be) and s->verify_result is set from the session. | |
aff8c126 | 547 | * - Both for new and resumed sessions, s->ext.ticket_expected is set to 1 |
c519e89f BM |
548 | * if the server should issue a new session ticket (to 0 otherwise). |
549 | */ | |
38b051a1 | 550 | int ssl_get_prev_session(SSL_CONNECTION *s, CLIENTHELLO_MSG *hello) |
0f113f3e MC |
551 | { |
552 | /* This is used only by servers. */ | |
b56bce4f | 553 | |
0f113f3e | 554 | SSL_SESSION *ret = NULL; |
9ef9088c | 555 | int fatal = 0; |
1053a6e2 | 556 | int try_session_cache = 0; |
61fb5923 | 557 | SSL_TICKET_STATUS r; |
d02b48c6 | 558 | |
38b051a1 | 559 | if (SSL_CONNECTION_IS_TLS13(s)) { |
61fb5923 MC |
560 | /* |
561 | * By default we will send a new ticket. This can be overridden in the | |
562 | * ticket processing. | |
563 | */ | |
564 | s->ext.ticket_expected = 1; | |
fe874d27 MC |
565 | if (!tls_parse_extension(s, TLSEXT_IDX_psk_kex_modes, |
566 | SSL_EXT_CLIENT_HELLO, hello->pre_proc_exts, | |
f63a17d6 | 567 | NULL, 0) |
fe874d27 | 568 | || !tls_parse_extension(s, TLSEXT_IDX_psk, SSL_EXT_CLIENT_HELLO, |
f63a17d6 | 569 | hello->pre_proc_exts, NULL, 0)) |
1053a6e2 MC |
570 | return -1; |
571 | ||
572 | ret = s->session; | |
573 | } else { | |
574 | /* sets s->ext.ticket_expected */ | |
575 | r = tls_get_ticket_from_client(s, hello, &ret); | |
576 | switch (r) { | |
df0fed9a TS |
577 | case SSL_TICKET_FATAL_ERR_MALLOC: |
578 | case SSL_TICKET_FATAL_ERR_OTHER: | |
1053a6e2 | 579 | fatal = 1; |
c48ffbcc | 580 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR); |
1053a6e2 | 581 | goto err; |
df0fed9a TS |
582 | case SSL_TICKET_NONE: |
583 | case SSL_TICKET_EMPTY: | |
6cc0b3c2 | 584 | if (hello->session_id_len > 0) { |
0afca811 | 585 | try_session_cache = 1; |
6cc0b3c2 MC |
586 | ret = lookup_sess_in_cache(s, hello->session_id, |
587 | hello->session_id_len); | |
588 | } | |
61c32649 | 589 | break; |
df0fed9a TS |
590 | case SSL_TICKET_NO_DECRYPT: |
591 | case SSL_TICKET_SUCCESS: | |
592 | case SSL_TICKET_SUCCESS_RENEW: | |
1053a6e2 | 593 | break; |
1053a6e2 | 594 | } |
0f113f3e | 595 | } |
c519e89f | 596 | |
0f113f3e MC |
597 | if (ret == NULL) |
598 | goto err; | |
599 | ||
600 | /* Now ret is non-NULL and we own one of its reference counts. */ | |
601 | ||
128ae276 MC |
602 | /* Check TLS version consistency */ |
603 | if (ret->ssl_version != s->version) | |
604 | goto err; | |
605 | ||
0f113f3e MC |
606 | if (ret->sid_ctx_length != s->sid_ctx_length |
607 | || memcmp(ret->sid_ctx, s->sid_ctx, ret->sid_ctx_length)) { | |
608 | /* | |
609 | * We have the session requested by the client, but we don't want to | |
610 | * use it in this context. | |
611 | */ | |
612 | goto err; /* treat like cache miss */ | |
613 | } | |
614 | ||
615 | if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) { | |
616 | /* | |
617 | * We can't be sure if this session is being used out of context, | |
618 | * which is especially important for SSL_VERIFY_PEER. The application | |
619 | * should have used SSL[_CTX]_set_session_id_context. For this error | |
620 | * case, we generate an error instead of treating the event like a | |
621 | * cache miss (otherwise it would be easy for applications to | |
622 | * effectively disable the session cache by accident without anyone | |
623 | * noticing). | |
624 | */ | |
625 | ||
c48ffbcc | 626 | SSLfatal(s, SSL_AD_INTERNAL_ERROR, |
f63a17d6 | 627 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); |
0f113f3e MC |
628 | fatal = 1; |
629 | goto err; | |
630 | } | |
631 | ||
25959e04 | 632 | if (sess_timedout(time(NULL), ret)) { |
acce0557 | 633 | ssl_tsan_counter(s->session_ctx, &s->session_ctx->stats.sess_timeout); |
0f113f3e MC |
634 | if (try_session_cache) { |
635 | /* session was from the cache, so remove it */ | |
636 | SSL_CTX_remove_session(s->session_ctx, ret); | |
637 | } | |
638 | goto err; | |
639 | } | |
640 | ||
e7f0d921 DSH |
641 | /* Check extended master secret extension consistency */ |
642 | if (ret->flags & SSL_SESS_FLAG_EXTMS) { | |
643 | /* If old session includes extms, but new does not: abort handshake */ | |
555cbb32 | 644 | if (!(s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS)) { |
c48ffbcc | 645 | SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_INCONSISTENT_EXTMS); |
e7f0d921 DSH |
646 | fatal = 1; |
647 | goto err; | |
648 | } | |
555cbb32 | 649 | } else if (s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) { |
e7f0d921 DSH |
650 | /* If new session includes extms, but old does not: do not resume */ |
651 | goto err; | |
652 | } | |
653 | ||
38b051a1 | 654 | if (!SSL_CONNECTION_IS_TLS13(s)) { |
1053a6e2 MC |
655 | /* We already did this for TLS1.3 */ |
656 | SSL_SESSION_free(s->session); | |
657 | s->session = ret; | |
658 | } | |
0f113f3e | 659 | |
acce0557 | 660 | ssl_tsan_counter(s->session_ctx, &s->session_ctx->stats.sess_hit); |
0f113f3e MC |
661 | s->verify_result = s->session->verify_result; |
662 | return 1; | |
8876bc05 BM |
663 | |
664 | err: | |
0f113f3e MC |
665 | if (ret != NULL) { |
666 | SSL_SESSION_free(ret); | |
1f5b44e9 | 667 | /* In TLSv1.3 s->session was already set to ret, so we NULL it out */ |
38b051a1 | 668 | if (SSL_CONNECTION_IS_TLS13(s)) |
128ae276 | 669 | s->session = NULL; |
e481f9b9 | 670 | |
0f113f3e MC |
671 | if (!try_session_cache) { |
672 | /* | |
673 | * The session was from a ticket, so we should issue a ticket for | |
674 | * the new session | |
675 | */ | |
aff8c126 | 676 | s->ext.ticket_expected = 1; |
0f113f3e | 677 | } |
0f113f3e | 678 | } |
f63a17d6 | 679 | if (fatal) |
0f113f3e | 680 | return -1; |
40f805ad MC |
681 | |
682 | return 0; | |
0f113f3e | 683 | } |
d02b48c6 | 684 | |
6b691a5c | 685 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
0f113f3e | 686 | { |
9ef9088c | 687 | int ret = 0; |
0f113f3e MC |
688 | SSL_SESSION *s; |
689 | ||
690 | /* | |
691 | * add just 1 reference count for the SSL_CTX's session cache even though | |
692 | * it has two ways of access: each session is in a doubly linked list and | |
693 | * an lhash | |
694 | */ | |
16203f7b | 695 | SSL_SESSION_up_ref(c); |
0f113f3e MC |
696 | /* |
697 | * if session c is in already in cache, we take back the increment later | |
698 | */ | |
699 | ||
cd3f8c1b RS |
700 | if (!CRYPTO_THREAD_write_lock(ctx->lock)) { |
701 | SSL_SESSION_free(c); | |
702 | return 0; | |
703 | } | |
0f113f3e MC |
704 | s = lh_SSL_SESSION_insert(ctx->sessions, c); |
705 | ||
706 | /* | |
707 | * s != NULL iff we already had a session with the given PID. In this | |
708 | * case, s == c should hold (then we did not really modify | |
709 | * ctx->sessions), or we're in trouble. | |
710 | */ | |
711 | if (s != NULL && s != c) { | |
712 | /* We *are* in trouble ... */ | |
713 | SSL_SESSION_list_remove(ctx, s); | |
714 | SSL_SESSION_free(s); | |
715 | /* | |
716 | * ... so pretend the other session did not exist in cache (we cannot | |
717 | * handle two SSL_SESSION structures with identical session ID in the | |
718 | * same cache, which could happen e.g. when two threads concurrently | |
719 | * obtain the same session from an external cache) | |
720 | */ | |
721 | s = NULL; | |
38088ce9 BE |
722 | } else if (s == NULL && |
723 | lh_SSL_SESSION_retrieve(ctx->sessions, c) == NULL) { | |
724 | /* s == NULL can also mean OOM error in lh_SSL_SESSION_insert ... */ | |
725 | ||
726 | /* | |
727 | * ... so take back the extra reference and also don't add | |
728 | * the session to the SSL_SESSION_list at this time | |
729 | */ | |
730 | s = c; | |
0f113f3e MC |
731 | } |
732 | ||
25959e04 TS |
733 | /* Adjust last used time, and add back into the cache at the appropriate spot */ |
734 | if (ctx->session_cache_mode & SSL_SESS_CACHE_UPDATE_TIME) { | |
735 | c->time = time(NULL); | |
736 | ssl_session_calculate_timeout(c); | |
737 | } | |
0f113f3e | 738 | |
4842a27b | 739 | if (s == NULL) { |
0f113f3e MC |
740 | /* |
741 | * new cache entry -- remove old ones if cache has become too large | |
4842a27b | 742 | * delete cache entry *before* add, so we don't remove the one we're adding! |
0f113f3e MC |
743 | */ |
744 | ||
745 | ret = 1; | |
746 | ||
747 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) { | |
4842a27b | 748 | while (SSL_CTX_sess_number(ctx) >= SSL_CTX_sess_get_cache_size(ctx)) { |
0f113f3e MC |
749 | if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) |
750 | break; | |
751 | else | |
acce0557 | 752 | ssl_tsan_counter(ctx, &ctx->stats.sess_cache_full); |
0f113f3e MC |
753 | } |
754 | } | |
755 | } | |
4842a27b TS |
756 | |
757 | SSL_SESSION_list_add(ctx, c); | |
758 | ||
759 | if (s != NULL) { | |
760 | /* | |
761 | * existing cache entry -- decrement previously incremented reference | |
762 | * count because it already takes into account the cache | |
763 | */ | |
764 | ||
765 | SSL_SESSION_free(s); /* s == c */ | |
766 | ret = 0; | |
767 | } | |
16203f7b AG |
768 | CRYPTO_THREAD_unlock(ctx->lock); |
769 | return ret; | |
0f113f3e | 770 | } |
d02b48c6 | 771 | |
6b691a5c | 772 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
801294f8 | 773 | { |
0f113f3e | 774 | return remove_session_lock(ctx, c, 1); |
801294f8 DSH |
775 | } |
776 | ||
0fda2e37 | 777 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) |
0f113f3e MC |
778 | { |
779 | SSL_SESSION *r; | |
780 | int ret = 0; | |
781 | ||
782 | if ((c != NULL) && (c->session_id_length != 0)) { | |
cd3f8c1b RS |
783 | if (lck) { |
784 | if (!CRYPTO_THREAD_write_lock(ctx->lock)) | |
785 | return 0; | |
786 | } | |
66d7de16 | 787 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) != NULL) { |
0f113f3e | 788 | ret = 1; |
66d7de16 MC |
789 | r = lh_SSL_SESSION_delete(ctx->sessions, r); |
790 | SSL_SESSION_list_remove(ctx, r); | |
0f113f3e | 791 | } |
e4612d02 | 792 | c->not_resumable = 1; |
0f113f3e MC |
793 | |
794 | if (lck) | |
16203f7b | 795 | CRYPTO_THREAD_unlock(ctx->lock); |
0f113f3e | 796 | |
e4612d02 MC |
797 | if (ctx->remove_session_cb != NULL) |
798 | ctx->remove_session_cb(ctx, c); | |
c0a58e03 MH |
799 | |
800 | if (ret) | |
801 | SSL_SESSION_free(r); | |
cd3f8c1b | 802 | } |
26a7d938 | 803 | return ret; |
0f113f3e | 804 | } |
d02b48c6 | 805 | |
6b691a5c | 806 | void SSL_SESSION_free(SSL_SESSION *ss) |
0f113f3e MC |
807 | { |
808 | int i; | |
d02b48c6 | 809 | |
e6e9170d RS |
810 | if (ss == NULL) |
811 | return; | |
2f545ae4 | 812 | CRYPTO_DOWN_REF(&ss->references, &i, ss->lock); |
f3f1cf84 | 813 | REF_PRINT_COUNT("SSL_SESSION", ss); |
0f113f3e MC |
814 | if (i > 0) |
815 | return; | |
f3f1cf84 | 816 | REF_ASSERT_ISNT(i < 0); |
d02b48c6 | 817 | |
0f113f3e | 818 | CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data); |
58964a49 | 819 | |
cbe29648 RS |
820 | OPENSSL_cleanse(ss->master_key, sizeof(ss->master_key)); |
821 | OPENSSL_cleanse(ss->session_id, sizeof(ss->session_id)); | |
222561fe | 822 | X509_free(ss->peer); |
79b2a2f2 | 823 | OSSL_STACK_OF_X509_free(ss->peer_chain); |
aff8c126 RS |
824 | OPENSSL_free(ss->ext.hostname); |
825 | OPENSSL_free(ss->ext.tick); | |
ddac1974 | 826 | #ifndef OPENSSL_NO_PSK |
25aaa98a RS |
827 | OPENSSL_free(ss->psk_identity_hint); |
828 | OPENSSL_free(ss->psk_identity); | |
edc032b5 BL |
829 | #endif |
830 | #ifndef OPENSSL_NO_SRP | |
25aaa98a | 831 | OPENSSL_free(ss->srp_username); |
ed3883d2 | 832 | #endif |
f6370040 | 833 | OPENSSL_free(ss->ext.alpn_selected); |
df0fed9a | 834 | OPENSSL_free(ss->ticket_appdata); |
16203f7b | 835 | CRYPTO_THREAD_lock_free(ss->lock); |
4b45c6e5 | 836 | OPENSSL_clear_free(ss, sizeof(*ss)); |
0f113f3e | 837 | } |
d02b48c6 | 838 | |
16203f7b AG |
839 | int SSL_SESSION_up_ref(SSL_SESSION *ss) |
840 | { | |
841 | int i; | |
842 | ||
2f545ae4 | 843 | if (CRYPTO_UP_REF(&ss->references, &i, ss->lock) <= 0) |
16203f7b AG |
844 | return 0; |
845 | ||
846 | REF_PRINT_COUNT("SSL_SESSION", ss); | |
847 | REF_ASSERT_ISNT(i < 2); | |
848 | return ((i > 1) ? 1 : 0); | |
849 | } | |
850 | ||
6b691a5c | 851 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
0f113f3e | 852 | { |
38b051a1 TM |
853 | SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s); |
854 | ||
855 | if (sc == NULL) | |
856 | return 0; | |
857 | ||
858 | ssl_clear_bad_session(sc); | |
e70656cf MC |
859 | if (s->ctx->method != s->method) { |
860 | if (!SSL_set_ssl_method(s, s->ctx->method)) | |
861 | return 0; | |
862 | } | |
0f113f3e | 863 | |
e70656cf | 864 | if (session != NULL) { |
16203f7b | 865 | SSL_SESSION_up_ref(session); |
38b051a1 | 866 | sc->verify_result = session->verify_result; |
0f113f3e | 867 | } |
38b051a1 TM |
868 | SSL_SESSION_free(sc->session); |
869 | sc->session = session; | |
e70656cf MC |
870 | |
871 | return 1; | |
0f113f3e | 872 | } |
d02b48c6 | 873 | |
fddfc0af RG |
874 | int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid, |
875 | unsigned int sid_len) | |
876 | { | |
877 | if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) { | |
6849b73c | 878 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_TOO_LONG); |
fddfc0af RG |
879 | return 0; |
880 | } | |
881 | s->session_id_length = sid_len; | |
6aad9393 RG |
882 | if (sid != s->session_id) |
883 | memcpy(s->session_id, sid, sid_len); | |
fddfc0af RG |
884 | return 1; |
885 | } | |
886 | ||
6b691a5c | 887 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
0f113f3e | 888 | { |
25959e04 TS |
889 | time_t new_timeout = (time_t)t; |
890 | ||
891 | if (s == NULL || t < 0) | |
26a7d938 | 892 | return 0; |
25959e04 TS |
893 | if (s->owner != NULL) { |
894 | if (!CRYPTO_THREAD_write_lock(s->owner->lock)) | |
895 | return 0; | |
896 | s->timeout = new_timeout; | |
897 | ssl_session_calculate_timeout(s); | |
898 | SSL_SESSION_list_add(s->owner, s); | |
899 | CRYPTO_THREAD_unlock(s->owner->lock); | |
900 | } else { | |
901 | s->timeout = new_timeout; | |
902 | ssl_session_calculate_timeout(s); | |
903 | } | |
208fb891 | 904 | return 1; |
0f113f3e | 905 | } |
d02b48c6 | 906 | |
0821bcd4 | 907 | long SSL_SESSION_get_timeout(const SSL_SESSION *s) |
0f113f3e MC |
908 | { |
909 | if (s == NULL) | |
26a7d938 | 910 | return 0; |
25959e04 | 911 | return (long)s->timeout; |
0f113f3e | 912 | } |
d02b48c6 | 913 | |
0821bcd4 | 914 | long SSL_SESSION_get_time(const SSL_SESSION *s) |
0f113f3e MC |
915 | { |
916 | if (s == NULL) | |
26a7d938 | 917 | return 0; |
25959e04 | 918 | return (long)s->time; |
0f113f3e | 919 | } |
d02b48c6 | 920 | |
6b691a5c | 921 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
0f113f3e | 922 | { |
25959e04 TS |
923 | time_t new_time = (time_t)t; |
924 | ||
0f113f3e | 925 | if (s == NULL) |
26a7d938 | 926 | return 0; |
25959e04 TS |
927 | if (s->owner != NULL) { |
928 | if (!CRYPTO_THREAD_write_lock(s->owner->lock)) | |
929 | return 0; | |
930 | s->time = new_time; | |
931 | ssl_session_calculate_timeout(s); | |
932 | SSL_SESSION_list_add(s->owner, s); | |
933 | CRYPTO_THREAD_unlock(s->owner->lock); | |
934 | } else { | |
935 | s->time = new_time; | |
936 | ssl_session_calculate_timeout(s); | |
937 | } | |
26a7d938 | 938 | return t; |
0f113f3e | 939 | } |
d02b48c6 | 940 | |
bd01f649 TS |
941 | int SSL_SESSION_get_protocol_version(const SSL_SESSION *s) |
942 | { | |
bd01f649 TS |
943 | return s->ssl_version; |
944 | } | |
945 | ||
5a43d511 MC |
946 | int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version) |
947 | { | |
948 | s->ssl_version = version; | |
949 | return 1; | |
950 | } | |
951 | ||
e9281323 RS |
952 | const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s) |
953 | { | |
954 | return s->cipher; | |
955 | } | |
1a993d1d MC |
956 | |
957 | int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher) | |
958 | { | |
959 | s->cipher = cipher; | |
960 | return 1; | |
961 | } | |
e9281323 | 962 | |
4b6b8487 LC |
963 | const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s) |
964 | { | |
aff8c126 | 965 | return s->ext.hostname; |
4b6b8487 LC |
966 | } |
967 | ||
67738645 MC |
968 | int SSL_SESSION_set1_hostname(SSL_SESSION *s, const char *hostname) |
969 | { | |
970 | OPENSSL_free(s->ext.hostname); | |
971 | if (hostname == NULL) { | |
972 | s->ext.hostname = NULL; | |
973 | return 1; | |
974 | } | |
975 | s->ext.hostname = OPENSSL_strdup(hostname); | |
976 | ||
977 | return s->ext.hostname != NULL; | |
978 | } | |
979 | ||
f2baac27 MC |
980 | int SSL_SESSION_has_ticket(const SSL_SESSION *s) |
981 | { | |
aff8c126 | 982 | return (s->ext.ticklen > 0) ? 1 : 0; |
f2baac27 MC |
983 | } |
984 | ||
985 | unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s) | |
986 | { | |
aff8c126 | 987 | return s->ext.tick_lifetime_hint; |
f2baac27 MC |
988 | } |
989 | ||
48593cb1 | 990 | void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick, |
a230b26e | 991 | size_t *len) |
b7c9187b | 992 | { |
aff8c126 | 993 | *len = s->ext.ticklen; |
61986d32 | 994 | if (tick != NULL) |
aff8c126 | 995 | *tick = s->ext.tick; |
b7c9187b MC |
996 | } |
997 | ||
fcc47578 MC |
998 | uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s) |
999 | { | |
1000 | return s->ext.max_early_data; | |
1001 | } | |
1002 | ||
98e1d934 MC |
1003 | int SSL_SESSION_set_max_early_data(SSL_SESSION *s, uint32_t max_early_data) |
1004 | { | |
1005 | s->ext.max_early_data = max_early_data; | |
1006 | ||
1007 | return 1; | |
1008 | } | |
1009 | ||
67738645 MC |
1010 | void SSL_SESSION_get0_alpn_selected(const SSL_SESSION *s, |
1011 | const unsigned char **alpn, | |
1012 | size_t *len) | |
1013 | { | |
1014 | *alpn = s->ext.alpn_selected; | |
1015 | *len = s->ext.alpn_selected_len; | |
1016 | } | |
1017 | ||
1018 | int SSL_SESSION_set1_alpn_selected(SSL_SESSION *s, const unsigned char *alpn, | |
1019 | size_t len) | |
1020 | { | |
1021 | OPENSSL_free(s->ext.alpn_selected); | |
1022 | if (alpn == NULL || len == 0) { | |
1023 | s->ext.alpn_selected = NULL; | |
1024 | s->ext.alpn_selected_len = 0; | |
1025 | return 1; | |
1026 | } | |
1027 | s->ext.alpn_selected = OPENSSL_memdup(alpn, len); | |
1028 | if (s->ext.alpn_selected == NULL) { | |
1029 | s->ext.alpn_selected_len = 0; | |
1030 | return 0; | |
1031 | } | |
1032 | s->ext.alpn_selected_len = len; | |
1033 | ||
1034 | return 1; | |
1035 | } | |
1036 | ||
08557cf2 | 1037 | X509 *SSL_SESSION_get0_peer(SSL_SESSION *s) |
0f113f3e MC |
1038 | { |
1039 | return s->peer; | |
1040 | } | |
1041 | ||
1042 | int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx, | |
1043 | unsigned int sid_ctx_len) | |
1044 | { | |
1045 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
6849b73c | 1046 | ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); |
0f113f3e MC |
1047 | return 0; |
1048 | } | |
1049 | s->sid_ctx_length = sid_ctx_len; | |
6aad9393 RG |
1050 | if (sid_ctx != s->sid_ctx) |
1051 | memcpy(s->sid_ctx, sid_ctx, sid_ctx_len); | |
0f113f3e MC |
1052 | |
1053 | return 1; | |
1054 | } | |
08557cf2 | 1055 | |
e586eac8 MC |
1056 | int SSL_SESSION_is_resumable(const SSL_SESSION *s) |
1057 | { | |
1058 | /* | |
1059 | * In the case of EAP-FAST, we can have a pre-shared "ticket" without a | |
1060 | * session ID. | |
1061 | */ | |
1062 | return !s->not_resumable | |
1063 | && (s->session_id_length > 0 || s->ext.ticklen > 0); | |
1064 | } | |
1065 | ||
6b691a5c | 1066 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
0f113f3e MC |
1067 | { |
1068 | long l; | |
1069 | if (s == NULL) | |
26a7d938 | 1070 | return 0; |
0f113f3e MC |
1071 | l = s->session_timeout; |
1072 | s->session_timeout = t; | |
26a7d938 | 1073 | return l; |
0f113f3e | 1074 | } |
413c4f45 | 1075 | |
0821bcd4 | 1076 | long SSL_CTX_get_timeout(const SSL_CTX *s) |
0f113f3e MC |
1077 | { |
1078 | if (s == NULL) | |
26a7d938 K |
1079 | return 0; |
1080 | return s->session_timeout; | |
0f113f3e | 1081 | } |
413c4f45 | 1082 | |
0f113f3e | 1083 | int SSL_set_session_secret_cb(SSL *s, |
aff8c126 | 1084 | tls_session_secret_cb_fn tls_session_secret_cb, |
0f113f3e MC |
1085 | void *arg) |
1086 | { | |
38b051a1 TM |
1087 | SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s); |
1088 | ||
1089 | if (sc == NULL) | |
26a7d938 | 1090 | return 0; |
38b051a1 TM |
1091 | |
1092 | sc->ext.session_secret_cb = tls_session_secret_cb; | |
1093 | sc->ext.session_secret_cb_arg = arg; | |
208fb891 | 1094 | return 1; |
0f113f3e | 1095 | } |
12bf56c0 DSH |
1096 | |
1097 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, | |
0f113f3e MC |
1098 | void *arg) |
1099 | { | |
38b051a1 TM |
1100 | SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s); |
1101 | ||
1102 | if (sc == NULL) | |
26a7d938 | 1103 | return 0; |
38b051a1 TM |
1104 | |
1105 | sc->ext.session_ticket_cb = cb; | |
1106 | sc->ext.session_ticket_cb_arg = arg; | |
208fb891 | 1107 | return 1; |
0f113f3e | 1108 | } |
12bf56c0 DSH |
1109 | |
1110 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) | |
0f113f3e | 1111 | { |
38b051a1 TM |
1112 | SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s); |
1113 | ||
1114 | if (sc == NULL) | |
1115 | return 0; | |
1116 | ||
1117 | if (sc->version >= TLS1_VERSION) { | |
1118 | OPENSSL_free(sc->ext.session_ticket); | |
1119 | sc->ext.session_ticket = NULL; | |
1120 | sc->ext.session_ticket = | |
0f113f3e | 1121 | OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); |
38b051a1 | 1122 | if (sc->ext.session_ticket == NULL) { |
6849b73c | 1123 | ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
1124 | return 0; |
1125 | } | |
1126 | ||
1ed327f7 | 1127 | if (ext_data != NULL) { |
38b051a1 TM |
1128 | sc->ext.session_ticket->length = ext_len; |
1129 | sc->ext.session_ticket->data = sc->ext.session_ticket + 1; | |
1130 | memcpy(sc->ext.session_ticket->data, ext_data, ext_len); | |
0f113f3e | 1131 | } else { |
38b051a1 TM |
1132 | sc->ext.session_ticket->length = 0; |
1133 | sc->ext.session_ticket->data = NULL; | |
0f113f3e MC |
1134 | } |
1135 | ||
1136 | return 1; | |
1137 | } | |
1138 | ||
1139 | return 0; | |
1140 | } | |
0f113f3e | 1141 | |
6b691a5c | 1142 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
0f113f3e | 1143 | { |
25959e04 TS |
1144 | STACK_OF(SSL_SESSION) *sk; |
1145 | SSL_SESSION *current; | |
0f113f3e | 1146 | unsigned long i; |
0f113f3e | 1147 | |
cd3f8c1b RS |
1148 | if (!CRYPTO_THREAD_write_lock(s->lock)) |
1149 | return; | |
25959e04 TS |
1150 | |
1151 | sk = sk_SSL_SESSION_new_null(); | |
739a1eb1 RS |
1152 | i = lh_SSL_SESSION_get_down_load(s->sessions); |
1153 | lh_SSL_SESSION_set_down_load(s->sessions, 0); | |
25959e04 TS |
1154 | |
1155 | /* | |
1156 | * Iterate over the list from the back (oldest), and stop | |
1157 | * when a session can no longer be removed. | |
1158 | * Add the session to a temporary list to be freed outside | |
1159 | * the SSL_CTX lock. | |
1160 | * But still do the remove_session_cb() within the lock. | |
1161 | */ | |
1162 | while (s->session_cache_tail != NULL) { | |
1163 | current = s->session_cache_tail; | |
1164 | if (t == 0 || sess_timedout((time_t)t, current)) { | |
1165 | lh_SSL_SESSION_delete(s->sessions, current); | |
1166 | SSL_SESSION_list_remove(s, current); | |
1167 | current->not_resumable = 1; | |
1168 | if (s->remove_session_cb != NULL) | |
1169 | s->remove_session_cb(s, current); | |
1170 | /* | |
1171 | * Throw the session on a stack, it's entirely plausible | |
1172 | * that while freeing outside the critical section, the | |
1173 | * session could be re-added, so avoid using the next/prev | |
1174 | * pointers. If the stack failed to create, or the session | |
1175 | * couldn't be put on the stack, just free it here | |
1176 | */ | |
1177 | if (sk == NULL || !sk_SSL_SESSION_push(sk, current)) | |
1178 | SSL_SESSION_free(current); | |
1179 | } else { | |
1180 | break; | |
1181 | } | |
1182 | } | |
1183 | ||
739a1eb1 | 1184 | lh_SSL_SESSION_set_down_load(s->sessions, i); |
16203f7b | 1185 | CRYPTO_THREAD_unlock(s->lock); |
25959e04 TS |
1186 | |
1187 | sk_SSL_SESSION_pop_free(sk, SSL_SESSION_free); | |
0f113f3e | 1188 | } |
d02b48c6 | 1189 | |
38b051a1 | 1190 | int ssl_clear_bad_session(SSL_CONNECTION *s) |
0f113f3e MC |
1191 | { |
1192 | if ((s->session != NULL) && | |
1193 | !(s->shutdown & SSL_SENT_SHUTDOWN) && | |
38b051a1 TM |
1194 | !(SSL_in_init(SSL_CONNECTION_GET_SSL(s)) |
1195 | || SSL_in_before(SSL_CONNECTION_GET_SSL(s)))) { | |
e2bb9b9b | 1196 | SSL_CTX_remove_session(s->session_ctx, s->session); |
208fb891 | 1197 | return 1; |
0f113f3e | 1198 | } else |
26a7d938 | 1199 | return 0; |
0f113f3e | 1200 | } |
58964a49 RE |
1201 | |
1202 | /* locked by SSL_CTX in the calling function */ | |
6b691a5c | 1203 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1204 | { |
1205 | if ((s->next == NULL) || (s->prev == NULL)) | |
1206 | return; | |
1207 | ||
1208 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) { | |
1209 | /* last element in list */ | |
1210 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1211 | /* only one element in list */ | |
1212 | ctx->session_cache_head = NULL; | |
1213 | ctx->session_cache_tail = NULL; | |
1214 | } else { | |
1215 | ctx->session_cache_tail = s->prev; | |
1216 | s->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1217 | } | |
1218 | } else { | |
1219 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1220 | /* first element in list */ | |
1221 | ctx->session_cache_head = s->next; | |
1222 | s->next->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1223 | } else { | |
1224 | /* middle of list */ | |
1225 | s->next->prev = s->prev; | |
1226 | s->prev->next = s->next; | |
1227 | } | |
1228 | } | |
1229 | s->prev = s->next = NULL; | |
25959e04 | 1230 | s->owner = NULL; |
0f113f3e | 1231 | } |
58964a49 | 1232 | |
6b691a5c | 1233 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e | 1234 | { |
25959e04 TS |
1235 | SSL_SESSION *next; |
1236 | ||
0f113f3e MC |
1237 | if ((s->next != NULL) && (s->prev != NULL)) |
1238 | SSL_SESSION_list_remove(ctx, s); | |
1239 | ||
1240 | if (ctx->session_cache_head == NULL) { | |
1241 | ctx->session_cache_head = s; | |
1242 | ctx->session_cache_tail = s; | |
1243 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1244 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1245 | } else { | |
25959e04 TS |
1246 | if (timeoutcmp(s, ctx->session_cache_head) >= 0) { |
1247 | /* | |
1248 | * if we timeout after (or the same time as) the first | |
1249 | * session, put us first - usual case | |
1250 | */ | |
1251 | s->next = ctx->session_cache_head; | |
1252 | s->next->prev = s; | |
1253 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1254 | ctx->session_cache_head = s; | |
1255 | } else if (timeoutcmp(s, ctx->session_cache_tail) < 0) { | |
1256 | /* if we timeout before the last session, put us last */ | |
1257 | s->prev = ctx->session_cache_tail; | |
1258 | s->prev->next = s; | |
1259 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1260 | ctx->session_cache_tail = s; | |
1261 | } else { | |
1262 | /* | |
1263 | * we timeout somewhere in-between - if there is only | |
1264 | * one session in the cache it will be caught above | |
1265 | */ | |
1266 | next = ctx->session_cache_head->next; | |
1267 | while (next != (SSL_SESSION*)&(ctx->session_cache_tail)) { | |
1268 | if (timeoutcmp(s, next) >= 0) { | |
1269 | s->next = next; | |
1270 | s->prev = next->prev; | |
1271 | next->prev->next = s; | |
1272 | next->prev = s; | |
1273 | break; | |
1274 | } | |
1275 | next = next->next; | |
1276 | } | |
1277 | } | |
0f113f3e | 1278 | } |
25959e04 | 1279 | s->owner = ctx; |
0f113f3e | 1280 | } |
58964a49 | 1281 | |
7806f3dd | 1282 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
a230b26e | 1283 | int (*cb) (struct ssl_st *ssl, SSL_SESSION *sess)) |
0f113f3e MC |
1284 | { |
1285 | ctx->new_session_cb = cb; | |
1286 | } | |
7806f3dd | 1287 | |
0f113f3e MC |
1288 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (SSL *ssl, SSL_SESSION *sess) { |
1289 | return ctx->new_session_cb; | |
1290 | } | |
7806f3dd NL |
1291 | |
1292 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1293 | void (*cb) (SSL_CTX *ctx, SSL_SESSION *sess)) |
1294 | { | |
1295 | ctx->remove_session_cb = cb; | |
1296 | } | |
7806f3dd | 1297 | |
0f113f3e MC |
1298 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (SSL_CTX *ctx, |
1299 | SSL_SESSION *sess) { | |
1300 | return ctx->remove_session_cb; | |
1301 | } | |
7806f3dd NL |
1302 | |
1303 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, | |
38b051a1 | 1304 | SSL_SESSION *(*cb) (SSL *ssl, |
b6981744 EK |
1305 | const unsigned char *data, |
1306 | int len, int *copy)) | |
0f113f3e MC |
1307 | { |
1308 | ctx->get_session_cb = cb; | |
1309 | } | |
1310 | ||
1311 | SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (SSL *ssl, | |
a230b26e EK |
1312 | const unsigned char |
1313 | *data, int len, | |
1314 | int *copy) { | |
0f113f3e MC |
1315 | return ctx->get_session_cb; |
1316 | } | |
1317 | ||
1318 | void SSL_CTX_set_info_callback(SSL_CTX *ctx, | |
1319 | void (*cb) (const SSL *ssl, int type, int val)) | |
1320 | { | |
1321 | ctx->info_callback = cb; | |
1322 | } | |
1323 | ||
1324 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type, | |
1325 | int val) { | |
1326 | return ctx->info_callback; | |
1327 | } | |
7806f3dd NL |
1328 | |
1329 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1330 | int (*cb) (SSL *ssl, X509 **x509, |
1331 | EVP_PKEY **pkey)) | |
1332 | { | |
1333 | ctx->client_cert_cb = cb; | |
1334 | } | |
7806f3dd | 1335 | |
0f113f3e MC |
1336 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509, |
1337 | EVP_PKEY **pkey) { | |
1338 | return ctx->client_cert_cb; | |
1339 | } | |
7806f3dd NL |
1340 | |
1341 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1342 | int (*cb) (SSL *ssl, |
1343 | unsigned char *cookie, | |
1344 | unsigned int *cookie_len)) | |
1345 | { | |
1346 | ctx->app_gen_cookie_cb = cb; | |
1347 | } | |
7806f3dd NL |
1348 | |
1349 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, | |
a230b26e EK |
1350 | int (*cb) (SSL *ssl, |
1351 | const unsigned char *cookie, | |
0f113f3e MC |
1352 | unsigned int cookie_len)) |
1353 | { | |
1354 | ctx->app_verify_cookie_cb = cb; | |
1355 | } | |
7806f3dd | 1356 | |
df0fed9a TS |
1357 | int SSL_SESSION_set1_ticket_appdata(SSL_SESSION *ss, const void *data, size_t len) |
1358 | { | |
1359 | OPENSSL_free(ss->ticket_appdata); | |
1360 | ss->ticket_appdata_len = 0; | |
1361 | if (data == NULL || len == 0) { | |
1362 | ss->ticket_appdata = NULL; | |
1363 | return 1; | |
1364 | } | |
1365 | ss->ticket_appdata = OPENSSL_memdup(data, len); | |
1366 | if (ss->ticket_appdata != NULL) { | |
1367 | ss->ticket_appdata_len = len; | |
1368 | return 1; | |
1369 | } | |
1370 | return 0; | |
1371 | } | |
1372 | ||
1373 | int SSL_SESSION_get0_ticket_appdata(SSL_SESSION *ss, void **data, size_t *len) | |
1374 | { | |
1375 | *data = ss->ticket_appdata; | |
1376 | *len = ss->ticket_appdata_len; | |
1377 | return 1; | |
1378 | } | |
1379 | ||
3fa2812f BS |
1380 | void SSL_CTX_set_stateless_cookie_generate_cb( |
1381 | SSL_CTX *ctx, | |
1382 | int (*cb) (SSL *ssl, | |
1383 | unsigned char *cookie, | |
1384 | size_t *cookie_len)) | |
1385 | { | |
1386 | ctx->gen_stateless_cookie_cb = cb; | |
1387 | } | |
1388 | ||
1389 | void SSL_CTX_set_stateless_cookie_verify_cb( | |
1390 | SSL_CTX *ctx, | |
1391 | int (*cb) (SSL *ssl, | |
1392 | const unsigned char *cookie, | |
1393 | size_t cookie_len)) | |
1394 | { | |
1395 | ctx->verify_stateless_cookie_cb = cb; | |
1396 | } | |
1397 | ||
a230b26e | 1398 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) |