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Commit | Line | Data |
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846e33c7 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
c80149d9 | 3 | * Copyright 2005 Nokia. All rights reserved. |
f1fd4544 | 4 | * |
846e33c7 RS |
5 | * Licensed under the OpenSSL license (the "License"). You may not use |
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 BM |
12 | #include <openssl/lhash.h> |
13 | #include <openssl/rand.h> | |
3c27208f | 14 | #include <openssl/engine.h> |
d02b48c6 | 15 | #include "ssl_locl.h" |
1053a6e2 | 16 | #include "statem/statem_locl.h" |
d02b48c6 | 17 | |
58964a49 | 18 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s); |
0f113f3e | 19 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s); |
801294f8 | 20 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck); |
58964a49 | 21 | |
e7a28df7 | 22 | /* |
e586eac8 MC |
23 | * SSL_get_session() and SSL_get1_session() are problematic in TLS1.3 because, |
24 | * unlike in earlier protocol versions, the session ticket may not have been | |
25 | * sent yet even though a handshake has finished. The session ticket data could | |
26 | * come in sometime later...or even change if multiple session ticket messages | |
27 | * are sent from the server. The preferred way for applications to obtain | |
28 | * a resumable session is to use SSL_CTX_sess_set_new_cb(). | |
e7a28df7 MC |
29 | */ |
30 | ||
0821bcd4 | 31 | SSL_SESSION *SSL_get_session(const SSL *ssl) |
52732b38 | 32 | /* aka SSL_get0_session; gets 0 objects, just returns a copy of the pointer */ |
0f113f3e MC |
33 | { |
34 | return (ssl->session); | |
35 | } | |
52732b38 BM |
36 | |
37 | SSL_SESSION *SSL_get1_session(SSL *ssl) | |
38 | /* variant of SSL_get_session: caller really gets something */ | |
0f113f3e MC |
39 | { |
40 | SSL_SESSION *sess; | |
41 | /* | |
42 | * Need to lock this all up rather than just use CRYPTO_add so that | |
43 | * somebody doesn't free ssl->session between when we check it's non-null | |
44 | * and when we up the reference count. | |
45 | */ | |
16203f7b | 46 | CRYPTO_THREAD_read_lock(ssl->lock); |
0f113f3e MC |
47 | sess = ssl->session; |
48 | if (sess) | |
16203f7b AG |
49 | SSL_SESSION_up_ref(sess); |
50 | CRYPTO_THREAD_unlock(ssl->lock); | |
51 | return sess; | |
0f113f3e MC |
52 | } |
53 | ||
6b691a5c | 54 | int SSL_SESSION_set_ex_data(SSL_SESSION *s, int idx, void *arg) |
0f113f3e MC |
55 | { |
56 | return (CRYPTO_set_ex_data(&s->ex_data, idx, arg)); | |
57 | } | |
58964a49 | 58 | |
0821bcd4 | 59 | void *SSL_SESSION_get_ex_data(const SSL_SESSION *s, int idx) |
0f113f3e MC |
60 | { |
61 | return (CRYPTO_get_ex_data(&s->ex_data, idx)); | |
62 | } | |
58964a49 | 63 | |
6b691a5c | 64 | SSL_SESSION *SSL_SESSION_new(void) |
0f113f3e MC |
65 | { |
66 | SSL_SESSION *ss; | |
67 | ||
534a43ff MC |
68 | if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL)) |
69 | return NULL; | |
70 | ||
b51bce94 | 71 | ss = OPENSSL_zalloc(sizeof(*ss)); |
0f113f3e MC |
72 | if (ss == NULL) { |
73 | SSLerr(SSL_F_SSL_SESSION_NEW, ERR_R_MALLOC_FAILURE); | |
16203f7b | 74 | return NULL; |
0f113f3e | 75 | } |
0f113f3e MC |
76 | |
77 | ss->verify_result = 1; /* avoid 0 (= X509_V_OK) just in case */ | |
78 | ss->references = 1; | |
79 | ss->timeout = 60 * 5 + 4; /* 5 minute timeout by default */ | |
80 | ss->time = (unsigned long)time(NULL); | |
16203f7b AG |
81 | ss->lock = CRYPTO_THREAD_lock_new(); |
82 | if (ss->lock == NULL) { | |
83 | SSLerr(SSL_F_SSL_SESSION_NEW, ERR_R_MALLOC_FAILURE); | |
84 | OPENSSL_free(ss); | |
85 | return NULL; | |
86 | } | |
87 | ||
25a807bc F |
88 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, ss, &ss->ex_data)) { |
89 | CRYPTO_THREAD_lock_free(ss->lock); | |
90 | OPENSSL_free(ss); | |
91 | return NULL; | |
92 | } | |
16203f7b | 93 | return ss; |
0f113f3e | 94 | } |
d02b48c6 | 95 | |
98ece4ee MC |
96 | /* |
97 | * Create a new SSL_SESSION and duplicate the contents of |src| into it. If | |
98 | * ticket == 0 then no ticket information is duplicated, otherwise it is. | |
99 | */ | |
100 | SSL_SESSION *ssl_session_dup(SSL_SESSION *src, int ticket) | |
101 | { | |
102 | SSL_SESSION *dest; | |
103 | ||
104 | dest = OPENSSL_malloc(sizeof(*src)); | |
105 | if (dest == NULL) { | |
106 | goto err; | |
107 | } | |
108 | memcpy(dest, src, sizeof(*dest)); | |
109 | ||
708cf593 MC |
110 | /* |
111 | * Set the various pointers to NULL so that we can call SSL_SESSION_free in | |
112 | * the case of an error whilst halfway through constructing dest | |
113 | */ | |
114 | #ifndef OPENSSL_NO_PSK | |
115 | dest->psk_identity_hint = NULL; | |
116 | dest->psk_identity = NULL; | |
117 | #endif | |
118 | dest->ciphers = NULL; | |
aff8c126 | 119 | dest->ext.hostname = NULL; |
708cf593 | 120 | #ifndef OPENSSL_NO_EC |
aff8c126 RS |
121 | dest->ext.ecpointformats = NULL; |
122 | dest->ext.supportedgroups = NULL; | |
708cf593 | 123 | #endif |
aff8c126 | 124 | dest->ext.tick = NULL; |
708cf593 MC |
125 | #ifndef OPENSSL_NO_SRP |
126 | dest->srp_username = NULL; | |
127 | #endif | |
1ee21259 TS |
128 | dest->peer_chain = NULL; |
129 | dest->peer = NULL; | |
708cf593 MC |
130 | memset(&dest->ex_data, 0, sizeof(dest->ex_data)); |
131 | ||
132 | /* We deliberately don't copy the prev and next pointers */ | |
133 | dest->prev = NULL; | |
134 | dest->next = NULL; | |
135 | ||
136 | dest->references = 1; | |
137 | ||
16203f7b AG |
138 | dest->lock = CRYPTO_THREAD_lock_new(); |
139 | if (dest->lock == NULL) | |
140 | goto err; | |
141 | ||
1ee21259 TS |
142 | if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, dest, &dest->ex_data)) |
143 | goto err; | |
144 | ||
145 | if (src->peer != NULL) { | |
146 | if (!X509_up_ref(src->peer)) | |
147 | goto err; | |
148 | dest->peer = src->peer; | |
149 | } | |
708cf593 | 150 | |
36f038f1 DSH |
151 | if (src->peer_chain != NULL) { |
152 | dest->peer_chain = X509_chain_up_ref(src->peer_chain); | |
153 | if (dest->peer_chain == NULL) | |
154 | goto err; | |
155 | } | |
98ece4ee MC |
156 | #ifndef OPENSSL_NO_PSK |
157 | if (src->psk_identity_hint) { | |
7644a9ae | 158 | dest->psk_identity_hint = OPENSSL_strdup(src->psk_identity_hint); |
98ece4ee MC |
159 | if (dest->psk_identity_hint == NULL) { |
160 | goto err; | |
161 | } | |
98ece4ee MC |
162 | } |
163 | if (src->psk_identity) { | |
7644a9ae | 164 | dest->psk_identity = OPENSSL_strdup(src->psk_identity); |
98ece4ee MC |
165 | if (dest->psk_identity == NULL) { |
166 | goto err; | |
167 | } | |
98ece4ee MC |
168 | } |
169 | #endif | |
170 | ||
e8aa8b6c | 171 | if (src->ciphers != NULL) { |
98ece4ee MC |
172 | dest->ciphers = sk_SSL_CIPHER_dup(src->ciphers); |
173 | if (dest->ciphers == NULL) | |
174 | goto err; | |
98ece4ee MC |
175 | } |
176 | ||
177 | if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL_SESSION, | |
a230b26e | 178 | &dest->ex_data, &src->ex_data)) { |
98ece4ee MC |
179 | goto err; |
180 | } | |
181 | ||
aff8c126 RS |
182 | if (src->ext.hostname) { |
183 | dest->ext.hostname = OPENSSL_strdup(src->ext.hostname); | |
184 | if (dest->ext.hostname == NULL) { | |
98ece4ee MC |
185 | goto err; |
186 | } | |
98ece4ee | 187 | } |
708cf593 | 188 | #ifndef OPENSSL_NO_EC |
aff8c126 RS |
189 | if (src->ext.ecpointformats) { |
190 | dest->ext.ecpointformats = | |
191 | OPENSSL_memdup(src->ext.ecpointformats, | |
192 | src->ext.ecpointformats_len); | |
193 | if (dest->ext.ecpointformats == NULL) | |
98ece4ee | 194 | goto err; |
98ece4ee | 195 | } |
aff8c126 RS |
196 | if (src->ext.supportedgroups) { |
197 | dest->ext.supportedgroups = | |
198 | OPENSSL_memdup(src->ext.supportedgroups, | |
199 | src->ext.supportedgroups_len); | |
200 | if (dest->ext.supportedgroups == NULL) | |
98ece4ee | 201 | goto err; |
98ece4ee | 202 | } |
98ece4ee MC |
203 | #endif |
204 | ||
1ee21259 | 205 | if (ticket != 0 && src->ext.tick != NULL) { |
aff8c126 RS |
206 | dest->ext.tick = |
207 | OPENSSL_memdup(src->ext.tick, src->ext.ticklen); | |
208 | if (dest->ext.tick == NULL) | |
98ece4ee | 209 | goto err; |
708cf593 | 210 | } else { |
aff8c126 RS |
211 | dest->ext.tick_lifetime_hint = 0; |
212 | dest->ext.ticklen = 0; | |
98ece4ee MC |
213 | } |
214 | ||
215 | #ifndef OPENSSL_NO_SRP | |
98ece4ee | 216 | if (src->srp_username) { |
7644a9ae | 217 | dest->srp_username = OPENSSL_strdup(src->srp_username); |
98ece4ee MC |
218 | if (dest->srp_username == NULL) { |
219 | goto err; | |
220 | } | |
98ece4ee MC |
221 | } |
222 | #endif | |
223 | ||
224 | return dest; | |
a230b26e | 225 | err: |
98ece4ee MC |
226 | SSLerr(SSL_F_SSL_SESSION_DUP, ERR_R_MALLOC_FAILURE); |
227 | SSL_SESSION_free(dest); | |
228 | return NULL; | |
229 | } | |
230 | ||
a230b26e | 231 | const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) |
0f113f3e MC |
232 | { |
233 | if (len) | |
348240c6 | 234 | *len = (unsigned int)s->session_id_length; |
0f113f3e MC |
235 | return s->session_id; |
236 | } | |
fddfc0af RG |
237 | const unsigned char *SSL_SESSION_get0_id_context(const SSL_SESSION *s, |
238 | unsigned int *len) | |
239 | { | |
240 | if (len != NULL) | |
348240c6 | 241 | *len = (unsigned int)s->sid_ctx_length; |
fddfc0af RG |
242 | return s->sid_ctx; |
243 | } | |
4879ec7b | 244 | |
f9b0b452 | 245 | unsigned int SSL_SESSION_get_compress_id(const SSL_SESSION *s) |
0f113f3e MC |
246 | { |
247 | return s->compress_meth; | |
248 | } | |
249 | ||
250 | /* | |
251 | * SSLv3/TLSv1 has 32 bytes (256 bits) of session ID space. As such, filling | |
252 | * the ID with random junk repeatedly until we have no conflict is going to | |
253 | * complete in one iteration pretty much "most" of the time (btw: | |
254 | * understatement). So, if it takes us 10 iterations and we still can't avoid | |
255 | * a conflict - well that's a reasonable point to call it quits. Either the | |
256 | * RAND code is broken or someone is trying to open roughly very close to | |
257 | * 2^256 SSL sessions to our server. How you might store that many sessions | |
258 | * is perhaps a more interesting question ... | |
259 | */ | |
dc644fe2 GT |
260 | |
261 | #define MAX_SESS_ID_ATTEMPTS 10 | |
262 | static int def_generate_session_id(const SSL *ssl, unsigned char *id, | |
0f113f3e | 263 | unsigned int *id_len) |
dc644fe2 | 264 | { |
0f113f3e MC |
265 | unsigned int retry = 0; |
266 | do | |
266483d2 | 267 | if (RAND_bytes(id, *id_len) <= 0) |
0f113f3e MC |
268 | return 0; |
269 | while (SSL_has_matching_session_id(ssl, id, *id_len) && | |
270 | (++retry < MAX_SESS_ID_ATTEMPTS)) ; | |
271 | if (retry < MAX_SESS_ID_ATTEMPTS) | |
272 | return 1; | |
273 | /* else - woops a session_id match */ | |
274 | /* | |
275 | * XXX We should also check the external cache -- but the probability of | |
276 | * a collision is negligible, and we could not prevent the concurrent | |
277 | * creation of sessions with identical IDs since we currently don't have | |
278 | * means to atomically check whether a session ID already exists and make | |
279 | * a reservation for it if it does not (this problem applies to the | |
280 | * internal cache as well). | |
281 | */ | |
282 | return 0; | |
dc644fe2 GT |
283 | } |
284 | ||
6b691a5c | 285 | int ssl_get_new_session(SSL *s, int session) |
0f113f3e MC |
286 | { |
287 | /* This gets used by clients and servers. */ | |
288 | ||
289 | unsigned int tmp; | |
290 | SSL_SESSION *ss = NULL; | |
291 | GEN_SESSION_CB cb = def_generate_session_id; | |
292 | ||
293 | if ((ss = SSL_SESSION_new()) == NULL) | |
294 | return (0); | |
295 | ||
296 | /* If the context has a default timeout, use it */ | |
297 | if (s->session_ctx->session_timeout == 0) | |
298 | ss->timeout = SSL_get_default_timeout(s); | |
299 | else | |
300 | ss->timeout = s->session_ctx->session_timeout; | |
301 | ||
62adbcee RS |
302 | SSL_SESSION_free(s->session); |
303 | s->session = NULL; | |
0f113f3e MC |
304 | |
305 | if (session) { | |
306 | if (s->version == SSL3_VERSION) { | |
307 | ss->ssl_version = SSL3_VERSION; | |
308 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
309 | } else if (s->version == TLS1_VERSION) { | |
310 | ss->ssl_version = TLS1_VERSION; | |
311 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
312 | } else if (s->version == TLS1_1_VERSION) { | |
313 | ss->ssl_version = TLS1_1_VERSION; | |
314 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
315 | } else if (s->version == TLS1_2_VERSION) { | |
316 | ss->ssl_version = TLS1_2_VERSION; | |
317 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
582a17d6 MC |
318 | } else if (s->version == TLS1_3_VERSION) { |
319 | ss->ssl_version = TLS1_3_VERSION; | |
320 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
0f113f3e MC |
321 | } else if (s->version == DTLS1_BAD_VER) { |
322 | ss->ssl_version = DTLS1_BAD_VER; | |
323 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
324 | } else if (s->version == DTLS1_VERSION) { | |
325 | ss->ssl_version = DTLS1_VERSION; | |
326 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
327 | } else if (s->version == DTLS1_2_VERSION) { | |
328 | ss->ssl_version = DTLS1_2_VERSION; | |
329 | ss->session_id_length = SSL3_SSL_SESSION_ID_LENGTH; | |
330 | } else { | |
331 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, SSL_R_UNSUPPORTED_SSL_VERSION); | |
332 | SSL_SESSION_free(ss); | |
333 | return (0); | |
334 | } | |
e481f9b9 | 335 | |
35a1cc90 MC |
336 | /*- |
337 | * If RFC5077 ticket, use empty session ID (as server). | |
338 | * Note that: | |
339 | * (a) ssl_get_prev_session() does lookahead into the | |
340 | * ClientHello extensions to find the session ticket. | |
d4d78943 MC |
341 | * When ssl_get_prev_session() fails, statem_srvr.c calls |
342 | * ssl_get_new_session() in tls_process_client_hello(). | |
35a1cc90 MC |
343 | * At that point, it has not yet parsed the extensions, |
344 | * however, because of the lookahead, it already knows | |
345 | * whether a ticket is expected or not. | |
346 | * | |
d4d78943 | 347 | * (b) statem_clnt.c calls ssl_get_new_session() before parsing |
35a1cc90 MC |
348 | * ServerHello extensions, and before recording the session |
349 | * ID received from the server, so this block is a noop. | |
350 | */ | |
aff8c126 | 351 | if (s->ext.ticket_expected) { |
0f113f3e MC |
352 | ss->session_id_length = 0; |
353 | goto sess_id_done; | |
354 | } | |
e481f9b9 | 355 | |
0f113f3e | 356 | /* Choose which callback will set the session ID */ |
16203f7b AG |
357 | CRYPTO_THREAD_read_lock(s->lock); |
358 | CRYPTO_THREAD_read_lock(s->session_ctx->lock); | |
0f113f3e MC |
359 | if (s->generate_session_id) |
360 | cb = s->generate_session_id; | |
361 | else if (s->session_ctx->generate_session_id) | |
362 | cb = s->session_ctx->generate_session_id; | |
16203f7b AG |
363 | CRYPTO_THREAD_unlock(s->session_ctx->lock); |
364 | CRYPTO_THREAD_unlock(s->lock); | |
0f113f3e | 365 | /* Choose a session ID */ |
947f3156 | 366 | memset(ss->session_id, 0, ss->session_id_length); |
348240c6 | 367 | tmp = (int)ss->session_id_length; |
0f113f3e MC |
368 | if (!cb(s, ss->session_id, &tmp)) { |
369 | /* The callback failed */ | |
370 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, | |
371 | SSL_R_SSL_SESSION_ID_CALLBACK_FAILED); | |
372 | SSL_SESSION_free(ss); | |
373 | return (0); | |
374 | } | |
375 | /* | |
376 | * Don't allow the callback to set the session length to zero. nor | |
377 | * set it higher than it was. | |
378 | */ | |
cc99bfa7 | 379 | if (tmp == 0 || tmp > ss->session_id_length) { |
0f113f3e MC |
380 | /* The callback set an illegal length */ |
381 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, | |
382 | SSL_R_SSL_SESSION_ID_HAS_BAD_LENGTH); | |
383 | SSL_SESSION_free(ss); | |
384 | return (0); | |
385 | } | |
386 | ss->session_id_length = tmp; | |
387 | /* Finally, check for a conflict */ | |
388 | if (SSL_has_matching_session_id(s, ss->session_id, | |
348240c6 | 389 | (unsigned int)ss->session_id_length)) { |
0f113f3e MC |
390 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, SSL_R_SSL_SESSION_ID_CONFLICT); |
391 | SSL_SESSION_free(ss); | |
392 | return (0); | |
393 | } | |
e481f9b9 | 394 | |
0f113f3e | 395 | sess_id_done: |
aff8c126 RS |
396 | if (s->ext.hostname) { |
397 | ss->ext.hostname = OPENSSL_strdup(s->ext.hostname); | |
398 | if (ss->ext.hostname == NULL) { | |
0f113f3e MC |
399 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); |
400 | SSL_SESSION_free(ss); | |
401 | return 0; | |
402 | } | |
403 | } | |
0f113f3e MC |
404 | } else { |
405 | ss->session_id_length = 0; | |
406 | } | |
407 | ||
408 | if (s->sid_ctx_length > sizeof ss->sid_ctx) { | |
409 | SSLerr(SSL_F_SSL_GET_NEW_SESSION, ERR_R_INTERNAL_ERROR); | |
410 | SSL_SESSION_free(ss); | |
411 | return 0; | |
412 | } | |
413 | memcpy(ss->sid_ctx, s->sid_ctx, s->sid_ctx_length); | |
414 | ss->sid_ctx_length = s->sid_ctx_length; | |
415 | s->session = ss; | |
416 | ss->ssl_version = s->version; | |
417 | ss->verify_result = X509_V_OK; | |
418 | ||
e7f0d921 DSH |
419 | /* If client supports extended master secret set it in session */ |
420 | if (s->s3->flags & TLS1_FLAGS_RECEIVED_EXTMS) | |
421 | ss->flags |= SSL_SESS_FLAG_EXTMS; | |
422 | ||
0f113f3e MC |
423 | return (1); |
424 | } | |
d02b48c6 | 425 | |
3a83462d MC |
426 | /*- |
427 | * ssl_get_prev attempts to find an SSL_SESSION to be used to resume this | |
c519e89f BM |
428 | * connection. It is only called by servers. |
429 | * | |
de7d61d5 | 430 | * hello: The parsed ClientHello data |
c519e89f BM |
431 | * |
432 | * Returns: | |
1053a6e2 MC |
433 | * -1: fatal error |
434 | * 0: no session found | |
435 | * 1: a session may have been found. | |
c519e89f BM |
436 | * |
437 | * Side effects: | |
438 | * - If a session is found then s->session is pointed at it (after freeing an | |
439 | * existing session if need be) and s->verify_result is set from the session. | |
aff8c126 | 440 | * - Both for new and resumed sessions, s->ext.ticket_expected is set to 1 |
c519e89f BM |
441 | * if the server should issue a new session ticket (to 0 otherwise). |
442 | */ | |
1a9f457c | 443 | int ssl_get_prev_session(SSL *s, CLIENTHELLO_MSG *hello, int *al) |
0f113f3e MC |
444 | { |
445 | /* This is used only by servers. */ | |
b56bce4f | 446 | |
0f113f3e MC |
447 | SSL_SESSION *ret = NULL; |
448 | int fatal = 0; | |
1053a6e2 | 449 | int try_session_cache = 0; |
ddf6ec00 | 450 | TICKET_RETURN r; |
d02b48c6 | 451 | |
1053a6e2 | 452 | if (SSL_IS_TLS13(s)) { |
fe874d27 MC |
453 | if (!tls_parse_extension(s, TLSEXT_IDX_psk_kex_modes, |
454 | SSL_EXT_CLIENT_HELLO, hello->pre_proc_exts, | |
455 | NULL, 0, al) | |
456 | || !tls_parse_extension(s, TLSEXT_IDX_psk, SSL_EXT_CLIENT_HELLO, | |
1a9f457c | 457 | hello->pre_proc_exts, NULL, 0, al)) |
1053a6e2 MC |
458 | return -1; |
459 | ||
460 | ret = s->session; | |
461 | } else { | |
462 | /* sets s->ext.ticket_expected */ | |
463 | r = tls_get_ticket_from_client(s, hello, &ret); | |
464 | switch (r) { | |
ddf6ec00 | 465 | case TICKET_FATAL_ERR_MALLOC: |
61c32649 | 466 | case TICKET_FATAL_ERR_OTHER: |
1053a6e2 MC |
467 | fatal = 1; |
468 | goto err; | |
61c32649 MC |
469 | case TICKET_NONE: |
470 | case TICKET_EMPTY: | |
1053a6e2 | 471 | try_session_cache = 1; |
61c32649 MC |
472 | break; |
473 | case TICKET_NO_DECRYPT: | |
474 | case TICKET_SUCCESS: | |
ddf6ec00 | 475 | case TICKET_SUCCESS_RENEW: |
1053a6e2 | 476 | break; |
1053a6e2 | 477 | } |
0f113f3e | 478 | } |
c519e89f | 479 | |
0f113f3e MC |
480 | if (try_session_cache && |
481 | ret == NULL && | |
739a5eee | 482 | !(s->session_ctx->session_cache_mode & |
0f113f3e MC |
483 | SSL_SESS_CACHE_NO_INTERNAL_LOOKUP)) { |
484 | SSL_SESSION data; | |
1ab3836b | 485 | |
0f113f3e | 486 | data.ssl_version = s->version; |
1ab3836b MC |
487 | memcpy(data.session_id, hello->session_id, hello->session_id_len); |
488 | data.session_id_length = hello->session_id_len; | |
489 | ||
16203f7b | 490 | CRYPTO_THREAD_read_lock(s->session_ctx->lock); |
0f113f3e MC |
491 | ret = lh_SSL_SESSION_retrieve(s->session_ctx->sessions, &data); |
492 | if (ret != NULL) { | |
493 | /* don't allow other threads to steal it: */ | |
16203f7b | 494 | SSL_SESSION_up_ref(ret); |
0f113f3e | 495 | } |
16203f7b | 496 | CRYPTO_THREAD_unlock(s->session_ctx->lock); |
0f113f3e MC |
497 | if (ret == NULL) |
498 | s->session_ctx->stats.sess_miss++; | |
499 | } | |
500 | ||
501 | if (try_session_cache && | |
502 | ret == NULL && s->session_ctx->get_session_cb != NULL) { | |
503 | int copy = 1; | |
1ab3836b MC |
504 | |
505 | ret = s->session_ctx->get_session_cb(s, hello->session_id, | |
506 | hello->session_id_len, | |
b6981744 | 507 | ©); |
0f113f3e | 508 | |
bf0fc412 | 509 | if (ret != NULL) { |
0f113f3e MC |
510 | s->session_ctx->stats.sess_cb_hit++; |
511 | ||
512 | /* | |
513 | * Increment reference count now if the session callback asks us | |
514 | * to do so (note that if the session structures returned by the | |
515 | * callback are shared between threads, it must handle the | |
516 | * reference count itself [i.e. copy == 0], or things won't be | |
517 | * thread-safe). | |
518 | */ | |
519 | if (copy) | |
16203f7b | 520 | SSL_SESSION_up_ref(ret); |
0f113f3e MC |
521 | |
522 | /* | |
523 | * Add the externally cached session to the internal cache as | |
524 | * well if and only if we are supposed to. | |
525 | */ | |
526 | if (! | |
739a5eee | 527 | (s->session_ctx->session_cache_mode & |
69f68237 | 528 | SSL_SESS_CACHE_NO_INTERNAL_STORE)) { |
0f113f3e MC |
529 | /* |
530 | * The following should not return 1, otherwise, things are | |
531 | * very strange | |
532 | */ | |
61986d32 | 533 | if (SSL_CTX_add_session(s->session_ctx, ret)) |
69f68237 MC |
534 | goto err; |
535 | } | |
0f113f3e MC |
536 | } |
537 | } | |
538 | ||
539 | if (ret == NULL) | |
540 | goto err; | |
541 | ||
542 | /* Now ret is non-NULL and we own one of its reference counts. */ | |
543 | ||
128ae276 MC |
544 | /* Check TLS version consistency */ |
545 | if (ret->ssl_version != s->version) | |
546 | goto err; | |
547 | ||
0f113f3e MC |
548 | if (ret->sid_ctx_length != s->sid_ctx_length |
549 | || memcmp(ret->sid_ctx, s->sid_ctx, ret->sid_ctx_length)) { | |
550 | /* | |
551 | * We have the session requested by the client, but we don't want to | |
552 | * use it in this context. | |
553 | */ | |
554 | goto err; /* treat like cache miss */ | |
555 | } | |
556 | ||
557 | if ((s->verify_mode & SSL_VERIFY_PEER) && s->sid_ctx_length == 0) { | |
558 | /* | |
559 | * We can't be sure if this session is being used out of context, | |
560 | * which is especially important for SSL_VERIFY_PEER. The application | |
561 | * should have used SSL[_CTX]_set_session_id_context. For this error | |
562 | * case, we generate an error instead of treating the event like a | |
563 | * cache miss (otherwise it would be easy for applications to | |
564 | * effectively disable the session cache by accident without anyone | |
565 | * noticing). | |
566 | */ | |
567 | ||
568 | SSLerr(SSL_F_SSL_GET_PREV_SESSION, | |
569 | SSL_R_SESSION_ID_CONTEXT_UNINITIALIZED); | |
570 | fatal = 1; | |
571 | goto err; | |
572 | } | |
573 | ||
0f113f3e MC |
574 | if (ret->timeout < (long)(time(NULL) - ret->time)) { /* timeout */ |
575 | s->session_ctx->stats.sess_timeout++; | |
576 | if (try_session_cache) { | |
577 | /* session was from the cache, so remove it */ | |
578 | SSL_CTX_remove_session(s->session_ctx, ret); | |
579 | } | |
580 | goto err; | |
581 | } | |
582 | ||
e7f0d921 DSH |
583 | /* Check extended master secret extension consistency */ |
584 | if (ret->flags & SSL_SESS_FLAG_EXTMS) { | |
585 | /* If old session includes extms, but new does not: abort handshake */ | |
586 | if (!(s->s3->flags & TLS1_FLAGS_RECEIVED_EXTMS)) { | |
587 | SSLerr(SSL_F_SSL_GET_PREV_SESSION, SSL_R_INCONSISTENT_EXTMS); | |
fb34a0f4 | 588 | ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER); |
e7f0d921 DSH |
589 | fatal = 1; |
590 | goto err; | |
591 | } | |
592 | } else if (s->s3->flags & TLS1_FLAGS_RECEIVED_EXTMS) { | |
593 | /* If new session includes extms, but old does not: do not resume */ | |
594 | goto err; | |
595 | } | |
596 | ||
1053a6e2 MC |
597 | if (!SSL_IS_TLS13(s)) { |
598 | /* We already did this for TLS1.3 */ | |
599 | SSL_SESSION_free(s->session); | |
600 | s->session = ret; | |
601 | } | |
0f113f3e | 602 | |
1053a6e2 | 603 | s->session_ctx->stats.sess_hit++; |
0f113f3e MC |
604 | s->verify_result = s->session->verify_result; |
605 | return 1; | |
8876bc05 BM |
606 | |
607 | err: | |
0f113f3e MC |
608 | if (ret != NULL) { |
609 | SSL_SESSION_free(ret); | |
1f5b44e9 | 610 | /* In TLSv1.3 s->session was already set to ret, so we NULL it out */ |
128ae276 MC |
611 | if (SSL_IS_TLS13(s)) |
612 | s->session = NULL; | |
e481f9b9 | 613 | |
0f113f3e MC |
614 | if (!try_session_cache) { |
615 | /* | |
616 | * The session was from a ticket, so we should issue a ticket for | |
617 | * the new session | |
618 | */ | |
aff8c126 | 619 | s->ext.ticket_expected = 1; |
0f113f3e | 620 | } |
0f113f3e | 621 | } |
1a9f457c MC |
622 | if (fatal) { |
623 | *al = SSL_AD_INTERNAL_ERROR; | |
0f113f3e | 624 | return -1; |
1a9f457c | 625 | } |
40f805ad MC |
626 | |
627 | return 0; | |
0f113f3e | 628 | } |
d02b48c6 | 629 | |
6b691a5c | 630 | int SSL_CTX_add_session(SSL_CTX *ctx, SSL_SESSION *c) |
0f113f3e MC |
631 | { |
632 | int ret = 0; | |
633 | SSL_SESSION *s; | |
634 | ||
635 | /* | |
636 | * add just 1 reference count for the SSL_CTX's session cache even though | |
637 | * it has two ways of access: each session is in a doubly linked list and | |
638 | * an lhash | |
639 | */ | |
16203f7b | 640 | SSL_SESSION_up_ref(c); |
0f113f3e MC |
641 | /* |
642 | * if session c is in already in cache, we take back the increment later | |
643 | */ | |
644 | ||
16203f7b | 645 | CRYPTO_THREAD_write_lock(ctx->lock); |
0f113f3e MC |
646 | s = lh_SSL_SESSION_insert(ctx->sessions, c); |
647 | ||
648 | /* | |
649 | * s != NULL iff we already had a session with the given PID. In this | |
650 | * case, s == c should hold (then we did not really modify | |
651 | * ctx->sessions), or we're in trouble. | |
652 | */ | |
653 | if (s != NULL && s != c) { | |
654 | /* We *are* in trouble ... */ | |
655 | SSL_SESSION_list_remove(ctx, s); | |
656 | SSL_SESSION_free(s); | |
657 | /* | |
658 | * ... so pretend the other session did not exist in cache (we cannot | |
659 | * handle two SSL_SESSION structures with identical session ID in the | |
660 | * same cache, which could happen e.g. when two threads concurrently | |
661 | * obtain the same session from an external cache) | |
662 | */ | |
663 | s = NULL; | |
38088ce9 BE |
664 | } else if (s == NULL && |
665 | lh_SSL_SESSION_retrieve(ctx->sessions, c) == NULL) { | |
666 | /* s == NULL can also mean OOM error in lh_SSL_SESSION_insert ... */ | |
667 | ||
668 | /* | |
669 | * ... so take back the extra reference and also don't add | |
670 | * the session to the SSL_SESSION_list at this time | |
671 | */ | |
672 | s = c; | |
0f113f3e MC |
673 | } |
674 | ||
675 | /* Put at the head of the queue unless it is already in the cache */ | |
676 | if (s == NULL) | |
677 | SSL_SESSION_list_add(ctx, c); | |
678 | ||
679 | if (s != NULL) { | |
680 | /* | |
681 | * existing cache entry -- decrement previously incremented reference | |
682 | * count because it already takes into account the cache | |
683 | */ | |
684 | ||
685 | SSL_SESSION_free(s); /* s == c */ | |
686 | ret = 0; | |
687 | } else { | |
688 | /* | |
689 | * new cache entry -- remove old ones if cache has become too large | |
690 | */ | |
691 | ||
692 | ret = 1; | |
693 | ||
694 | if (SSL_CTX_sess_get_cache_size(ctx) > 0) { | |
a230b26e | 695 | while (SSL_CTX_sess_number(ctx) > SSL_CTX_sess_get_cache_size(ctx)) { |
0f113f3e MC |
696 | if (!remove_session_lock(ctx, ctx->session_cache_tail, 0)) |
697 | break; | |
698 | else | |
699 | ctx->stats.sess_cache_full++; | |
700 | } | |
701 | } | |
702 | } | |
16203f7b AG |
703 | CRYPTO_THREAD_unlock(ctx->lock); |
704 | return ret; | |
0f113f3e | 705 | } |
d02b48c6 | 706 | |
6b691a5c | 707 | int SSL_CTX_remove_session(SSL_CTX *ctx, SSL_SESSION *c) |
801294f8 | 708 | { |
0f113f3e | 709 | return remove_session_lock(ctx, c, 1); |
801294f8 DSH |
710 | } |
711 | ||
0fda2e37 | 712 | static int remove_session_lock(SSL_CTX *ctx, SSL_SESSION *c, int lck) |
0f113f3e MC |
713 | { |
714 | SSL_SESSION *r; | |
715 | int ret = 0; | |
716 | ||
717 | if ((c != NULL) && (c->session_id_length != 0)) { | |
718 | if (lck) | |
16203f7b | 719 | CRYPTO_THREAD_write_lock(ctx->lock); |
0f113f3e MC |
720 | if ((r = lh_SSL_SESSION_retrieve(ctx->sessions, c)) == c) { |
721 | ret = 1; | |
722 | r = lh_SSL_SESSION_delete(ctx->sessions, c); | |
723 | SSL_SESSION_list_remove(ctx, c); | |
724 | } | |
e4612d02 | 725 | c->not_resumable = 1; |
0f113f3e MC |
726 | |
727 | if (lck) | |
16203f7b | 728 | CRYPTO_THREAD_unlock(ctx->lock); |
0f113f3e | 729 | |
e4612d02 | 730 | if (ret) |
0f113f3e | 731 | SSL_SESSION_free(r); |
e4612d02 MC |
732 | |
733 | if (ctx->remove_session_cb != NULL) | |
734 | ctx->remove_session_cb(ctx, c); | |
0f113f3e MC |
735 | } else |
736 | ret = 0; | |
737 | return (ret); | |
738 | } | |
d02b48c6 | 739 | |
6b691a5c | 740 | void SSL_SESSION_free(SSL_SESSION *ss) |
0f113f3e MC |
741 | { |
742 | int i; | |
d02b48c6 | 743 | |
0f113f3e MC |
744 | if (ss == NULL) |
745 | return; | |
e03ddfae | 746 | |
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 | |
0f113f3e MC |
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); |
25aaa98a | 759 | sk_SSL_CIPHER_free(ss->ciphers); |
aff8c126 RS |
760 | OPENSSL_free(ss->ext.hostname); |
761 | OPENSSL_free(ss->ext.tick); | |
e481f9b9 | 762 | #ifndef OPENSSL_NO_EC |
aff8c126 RS |
763 | OPENSSL_free(ss->ext.ecpointformats); |
764 | ss->ext.ecpointformats = NULL; | |
765 | ss->ext.ecpointformats_len = 0; | |
766 | OPENSSL_free(ss->ext.supportedgroups); | |
767 | ss->ext.supportedgroups = NULL; | |
768 | ss->ext.supportedgroups_len = 0; | |
a230b26e | 769 | #endif /* OPENSSL_NO_EC */ |
ddac1974 | 770 | #ifndef OPENSSL_NO_PSK |
25aaa98a RS |
771 | OPENSSL_free(ss->psk_identity_hint); |
772 | OPENSSL_free(ss->psk_identity); | |
edc032b5 BL |
773 | #endif |
774 | #ifndef OPENSSL_NO_SRP | |
25aaa98a | 775 | OPENSSL_free(ss->srp_username); |
ed3883d2 | 776 | #endif |
f6370040 | 777 | OPENSSL_free(ss->ext.alpn_selected); |
16203f7b | 778 | CRYPTO_THREAD_lock_free(ss->lock); |
4b45c6e5 | 779 | OPENSSL_clear_free(ss, sizeof(*ss)); |
0f113f3e | 780 | } |
d02b48c6 | 781 | |
16203f7b AG |
782 | int SSL_SESSION_up_ref(SSL_SESSION *ss) |
783 | { | |
784 | int i; | |
785 | ||
2f545ae4 | 786 | if (CRYPTO_UP_REF(&ss->references, &i, ss->lock) <= 0) |
16203f7b AG |
787 | return 0; |
788 | ||
789 | REF_PRINT_COUNT("SSL_SESSION", ss); | |
790 | REF_ASSERT_ISNT(i < 2); | |
791 | return ((i > 1) ? 1 : 0); | |
792 | } | |
793 | ||
6b691a5c | 794 | int SSL_set_session(SSL *s, SSL_SESSION *session) |
0f113f3e | 795 | { |
e70656cf MC |
796 | ssl_clear_bad_session(s); |
797 | if (s->ctx->method != s->method) { | |
798 | if (!SSL_set_ssl_method(s, s->ctx->method)) | |
799 | return 0; | |
800 | } | |
0f113f3e | 801 | |
e70656cf | 802 | if (session != NULL) { |
16203f7b | 803 | SSL_SESSION_up_ref(session); |
e70656cf | 804 | s->verify_result = session->verify_result; |
0f113f3e | 805 | } |
e70656cf MC |
806 | SSL_SESSION_free(s->session); |
807 | s->session = session; | |
808 | ||
809 | return 1; | |
0f113f3e | 810 | } |
d02b48c6 | 811 | |
fddfc0af RG |
812 | int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid, |
813 | unsigned int sid_len) | |
814 | { | |
815 | if (sid_len > SSL_MAX_SSL_SESSION_ID_LENGTH) { | |
816 | SSLerr(SSL_F_SSL_SESSION_SET1_ID, | |
817 | SSL_R_SSL_SESSION_ID_TOO_LONG); | |
818 | return 0; | |
819 | } | |
820 | s->session_id_length = sid_len; | |
6aad9393 RG |
821 | if (sid != s->session_id) |
822 | memcpy(s->session_id, sid, sid_len); | |
fddfc0af RG |
823 | return 1; |
824 | } | |
825 | ||
6b691a5c | 826 | long SSL_SESSION_set_timeout(SSL_SESSION *s, long t) |
0f113f3e MC |
827 | { |
828 | if (s == NULL) | |
829 | return (0); | |
830 | s->timeout = t; | |
831 | return (1); | |
832 | } | |
d02b48c6 | 833 | |
0821bcd4 | 834 | long SSL_SESSION_get_timeout(const SSL_SESSION *s) |
0f113f3e MC |
835 | { |
836 | if (s == NULL) | |
837 | return (0); | |
838 | return (s->timeout); | |
839 | } | |
d02b48c6 | 840 | |
0821bcd4 | 841 | long SSL_SESSION_get_time(const SSL_SESSION *s) |
0f113f3e MC |
842 | { |
843 | if (s == NULL) | |
844 | return (0); | |
845 | return (s->time); | |
846 | } | |
d02b48c6 | 847 | |
6b691a5c | 848 | long SSL_SESSION_set_time(SSL_SESSION *s, long t) |
0f113f3e MC |
849 | { |
850 | if (s == NULL) | |
851 | return (0); | |
852 | s->time = t; | |
853 | return (t); | |
854 | } | |
d02b48c6 | 855 | |
bd01f649 TS |
856 | int SSL_SESSION_get_protocol_version(const SSL_SESSION *s) |
857 | { | |
bd01f649 TS |
858 | return s->ssl_version; |
859 | } | |
860 | ||
e9281323 RS |
861 | const SSL_CIPHER *SSL_SESSION_get0_cipher(const SSL_SESSION *s) |
862 | { | |
863 | return s->cipher; | |
864 | } | |
1a993d1d MC |
865 | |
866 | int SSL_SESSION_set_cipher(SSL_SESSION *s, const SSL_CIPHER *cipher) | |
867 | { | |
868 | s->cipher = cipher; | |
869 | return 1; | |
870 | } | |
e9281323 | 871 | |
4b6b8487 LC |
872 | const char *SSL_SESSION_get0_hostname(const SSL_SESSION *s) |
873 | { | |
aff8c126 | 874 | return s->ext.hostname; |
4b6b8487 LC |
875 | } |
876 | ||
f2baac27 MC |
877 | int SSL_SESSION_has_ticket(const SSL_SESSION *s) |
878 | { | |
aff8c126 | 879 | return (s->ext.ticklen > 0) ? 1 : 0; |
f2baac27 MC |
880 | } |
881 | ||
882 | unsigned long SSL_SESSION_get_ticket_lifetime_hint(const SSL_SESSION *s) | |
883 | { | |
aff8c126 | 884 | return s->ext.tick_lifetime_hint; |
f2baac27 MC |
885 | } |
886 | ||
48593cb1 | 887 | void SSL_SESSION_get0_ticket(const SSL_SESSION *s, const unsigned char **tick, |
a230b26e | 888 | size_t *len) |
b7c9187b | 889 | { |
aff8c126 | 890 | *len = s->ext.ticklen; |
61986d32 | 891 | if (tick != NULL) |
aff8c126 | 892 | *tick = s->ext.tick; |
b7c9187b MC |
893 | } |
894 | ||
fcc47578 MC |
895 | uint32_t SSL_SESSION_get_max_early_data(const SSL_SESSION *s) |
896 | { | |
897 | return s->ext.max_early_data; | |
898 | } | |
899 | ||
08557cf2 | 900 | X509 *SSL_SESSION_get0_peer(SSL_SESSION *s) |
0f113f3e MC |
901 | { |
902 | return s->peer; | |
903 | } | |
904 | ||
905 | int SSL_SESSION_set1_id_context(SSL_SESSION *s, const unsigned char *sid_ctx, | |
906 | unsigned int sid_ctx_len) | |
907 | { | |
908 | if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) { | |
909 | SSLerr(SSL_F_SSL_SESSION_SET1_ID_CONTEXT, | |
910 | SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG); | |
911 | return 0; | |
912 | } | |
913 | s->sid_ctx_length = sid_ctx_len; | |
6aad9393 RG |
914 | if (sid_ctx != s->sid_ctx) |
915 | memcpy(s->sid_ctx, sid_ctx, sid_ctx_len); | |
0f113f3e MC |
916 | |
917 | return 1; | |
918 | } | |
08557cf2 | 919 | |
e586eac8 MC |
920 | int SSL_SESSION_is_resumable(const SSL_SESSION *s) |
921 | { | |
922 | /* | |
923 | * In the case of EAP-FAST, we can have a pre-shared "ticket" without a | |
924 | * session ID. | |
925 | */ | |
926 | return !s->not_resumable | |
927 | && (s->session_id_length > 0 || s->ext.ticklen > 0); | |
928 | } | |
929 | ||
6b691a5c | 930 | long SSL_CTX_set_timeout(SSL_CTX *s, long t) |
0f113f3e MC |
931 | { |
932 | long l; | |
933 | if (s == NULL) | |
934 | return (0); | |
935 | l = s->session_timeout; | |
936 | s->session_timeout = t; | |
937 | return (l); | |
938 | } | |
413c4f45 | 939 | |
0821bcd4 | 940 | long SSL_CTX_get_timeout(const SSL_CTX *s) |
0f113f3e MC |
941 | { |
942 | if (s == NULL) | |
943 | return (0); | |
944 | return (s->session_timeout); | |
945 | } | |
413c4f45 | 946 | |
0f113f3e | 947 | int SSL_set_session_secret_cb(SSL *s, |
aff8c126 | 948 | tls_session_secret_cb_fn tls_session_secret_cb, |
0f113f3e MC |
949 | void *arg) |
950 | { | |
951 | if (s == NULL) | |
952 | return (0); | |
aff8c126 RS |
953 | s->ext.session_secret_cb = tls_session_secret_cb; |
954 | s->ext.session_secret_cb_arg = arg; | |
0f113f3e MC |
955 | return (1); |
956 | } | |
12bf56c0 DSH |
957 | |
958 | int SSL_set_session_ticket_ext_cb(SSL *s, tls_session_ticket_ext_cb_fn cb, | |
0f113f3e MC |
959 | void *arg) |
960 | { | |
961 | if (s == NULL) | |
962 | return (0); | |
aff8c126 RS |
963 | s->ext.session_ticket_cb = cb; |
964 | s->ext.session_ticket_cb_arg = arg; | |
0f113f3e MC |
965 | return (1); |
966 | } | |
12bf56c0 DSH |
967 | |
968 | int SSL_set_session_ticket_ext(SSL *s, void *ext_data, int ext_len) | |
0f113f3e MC |
969 | { |
970 | if (s->version >= TLS1_VERSION) { | |
aff8c126 RS |
971 | OPENSSL_free(s->ext.session_ticket); |
972 | s->ext.session_ticket = NULL; | |
973 | s->ext.session_ticket = | |
0f113f3e | 974 | OPENSSL_malloc(sizeof(TLS_SESSION_TICKET_EXT) + ext_len); |
aff8c126 | 975 | if (s->ext.session_ticket == NULL) { |
0f113f3e MC |
976 | SSLerr(SSL_F_SSL_SET_SESSION_TICKET_EXT, ERR_R_MALLOC_FAILURE); |
977 | return 0; | |
978 | } | |
979 | ||
1ed327f7 | 980 | if (ext_data != NULL) { |
aff8c126 RS |
981 | s->ext.session_ticket->length = ext_len; |
982 | s->ext.session_ticket->data = s->ext.session_ticket + 1; | |
983 | memcpy(s->ext.session_ticket->data, ext_data, ext_len); | |
0f113f3e | 984 | } else { |
aff8c126 RS |
985 | s->ext.session_ticket->length = 0; |
986 | s->ext.session_ticket->data = NULL; | |
0f113f3e MC |
987 | } |
988 | ||
989 | return 1; | |
990 | } | |
991 | ||
992 | return 0; | |
993 | } | |
0f113f3e MC |
994 | |
995 | typedef struct timeout_param_st { | |
996 | SSL_CTX *ctx; | |
997 | long time; | |
998 | LHASH_OF(SSL_SESSION) *cache; | |
999 | } TIMEOUT_PARAM; | |
d02b48c6 | 1000 | |
2a056de8 | 1001 | static void timeout_cb(SSL_SESSION *s, TIMEOUT_PARAM *p) |
0f113f3e MC |
1002 | { |
1003 | if ((p->time == 0) || (p->time > (s->time + s->timeout))) { /* timeout */ | |
1004 | /* | |
1005 | * The reason we don't call SSL_CTX_remove_session() is to save on | |
1006 | * locking overhead | |
1007 | */ | |
1008 | (void)lh_SSL_SESSION_delete(p->cache, s); | |
1009 | SSL_SESSION_list_remove(p->ctx, s); | |
1010 | s->not_resumable = 1; | |
1011 | if (p->ctx->remove_session_cb != NULL) | |
1012 | p->ctx->remove_session_cb(p->ctx, s); | |
1013 | SSL_SESSION_free(s); | |
1014 | } | |
1015 | } | |
d02b48c6 | 1016 | |
2a056de8 | 1017 | IMPLEMENT_LHASH_DOALL_ARG(SSL_SESSION, TIMEOUT_PARAM); |
3c914840 | 1018 | |
6b691a5c | 1019 | void SSL_CTX_flush_sessions(SSL_CTX *s, long t) |
0f113f3e MC |
1020 | { |
1021 | unsigned long i; | |
1022 | TIMEOUT_PARAM tp; | |
1023 | ||
1024 | tp.ctx = s; | |
1025 | tp.cache = s->sessions; | |
1026 | if (tp.cache == NULL) | |
1027 | return; | |
1028 | tp.time = t; | |
16203f7b | 1029 | CRYPTO_THREAD_write_lock(s->lock); |
739a1eb1 RS |
1030 | i = lh_SSL_SESSION_get_down_load(s->sessions); |
1031 | lh_SSL_SESSION_set_down_load(s->sessions, 0); | |
2a056de8 | 1032 | lh_SSL_SESSION_doall_TIMEOUT_PARAM(tp.cache, timeout_cb, &tp); |
739a1eb1 | 1033 | lh_SSL_SESSION_set_down_load(s->sessions, i); |
16203f7b | 1034 | CRYPTO_THREAD_unlock(s->lock); |
0f113f3e | 1035 | } |
d02b48c6 | 1036 | |
6b691a5c | 1037 | int ssl_clear_bad_session(SSL *s) |
0f113f3e MC |
1038 | { |
1039 | if ((s->session != NULL) && | |
1040 | !(s->shutdown & SSL_SENT_SHUTDOWN) && | |
1041 | !(SSL_in_init(s) || SSL_in_before(s))) { | |
e2bb9b9b | 1042 | SSL_CTX_remove_session(s->session_ctx, s->session); |
0f113f3e MC |
1043 | return (1); |
1044 | } else | |
1045 | return (0); | |
1046 | } | |
58964a49 RE |
1047 | |
1048 | /* locked by SSL_CTX in the calling function */ | |
6b691a5c | 1049 | static void SSL_SESSION_list_remove(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1050 | { |
1051 | if ((s->next == NULL) || (s->prev == NULL)) | |
1052 | return; | |
1053 | ||
1054 | if (s->next == (SSL_SESSION *)&(ctx->session_cache_tail)) { | |
1055 | /* last element in list */ | |
1056 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1057 | /* only one element in list */ | |
1058 | ctx->session_cache_head = NULL; | |
1059 | ctx->session_cache_tail = NULL; | |
1060 | } else { | |
1061 | ctx->session_cache_tail = s->prev; | |
1062 | s->prev->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1063 | } | |
1064 | } else { | |
1065 | if (s->prev == (SSL_SESSION *)&(ctx->session_cache_head)) { | |
1066 | /* first element in list */ | |
1067 | ctx->session_cache_head = s->next; | |
1068 | s->next->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1069 | } else { | |
1070 | /* middle of list */ | |
1071 | s->next->prev = s->prev; | |
1072 | s->prev->next = s->next; | |
1073 | } | |
1074 | } | |
1075 | s->prev = s->next = NULL; | |
1076 | } | |
58964a49 | 1077 | |
6b691a5c | 1078 | static void SSL_SESSION_list_add(SSL_CTX *ctx, SSL_SESSION *s) |
0f113f3e MC |
1079 | { |
1080 | if ((s->next != NULL) && (s->prev != NULL)) | |
1081 | SSL_SESSION_list_remove(ctx, s); | |
1082 | ||
1083 | if (ctx->session_cache_head == NULL) { | |
1084 | ctx->session_cache_head = s; | |
1085 | ctx->session_cache_tail = s; | |
1086 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1087 | s->next = (SSL_SESSION *)&(ctx->session_cache_tail); | |
1088 | } else { | |
1089 | s->next = ctx->session_cache_head; | |
1090 | s->next->prev = s; | |
1091 | s->prev = (SSL_SESSION *)&(ctx->session_cache_head); | |
1092 | ctx->session_cache_head = s; | |
1093 | } | |
1094 | } | |
58964a49 | 1095 | |
7806f3dd | 1096 | void SSL_CTX_sess_set_new_cb(SSL_CTX *ctx, |
a230b26e | 1097 | int (*cb) (struct ssl_st *ssl, SSL_SESSION *sess)) |
0f113f3e MC |
1098 | { |
1099 | ctx->new_session_cb = cb; | |
1100 | } | |
7806f3dd | 1101 | |
0f113f3e MC |
1102 | int (*SSL_CTX_sess_get_new_cb(SSL_CTX *ctx)) (SSL *ssl, SSL_SESSION *sess) { |
1103 | return ctx->new_session_cb; | |
1104 | } | |
7806f3dd NL |
1105 | |
1106 | void SSL_CTX_sess_set_remove_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1107 | void (*cb) (SSL_CTX *ctx, SSL_SESSION *sess)) |
1108 | { | |
1109 | ctx->remove_session_cb = cb; | |
1110 | } | |
7806f3dd | 1111 | |
0f113f3e MC |
1112 | void (*SSL_CTX_sess_get_remove_cb(SSL_CTX *ctx)) (SSL_CTX *ctx, |
1113 | SSL_SESSION *sess) { | |
1114 | return ctx->remove_session_cb; | |
1115 | } | |
7806f3dd NL |
1116 | |
1117 | void SSL_CTX_sess_set_get_cb(SSL_CTX *ctx, | |
0f113f3e | 1118 | SSL_SESSION *(*cb) (struct ssl_st *ssl, |
b6981744 EK |
1119 | const unsigned char *data, |
1120 | int len, int *copy)) | |
0f113f3e MC |
1121 | { |
1122 | ctx->get_session_cb = cb; | |
1123 | } | |
1124 | ||
1125 | SSL_SESSION *(*SSL_CTX_sess_get_get_cb(SSL_CTX *ctx)) (SSL *ssl, | |
a230b26e EK |
1126 | const unsigned char |
1127 | *data, int len, | |
1128 | int *copy) { | |
0f113f3e MC |
1129 | return ctx->get_session_cb; |
1130 | } | |
1131 | ||
1132 | void SSL_CTX_set_info_callback(SSL_CTX *ctx, | |
1133 | void (*cb) (const SSL *ssl, int type, int val)) | |
1134 | { | |
1135 | ctx->info_callback = cb; | |
1136 | } | |
1137 | ||
1138 | void (*SSL_CTX_get_info_callback(SSL_CTX *ctx)) (const SSL *ssl, int type, | |
1139 | int val) { | |
1140 | return ctx->info_callback; | |
1141 | } | |
7806f3dd NL |
1142 | |
1143 | void SSL_CTX_set_client_cert_cb(SSL_CTX *ctx, | |
0f113f3e MC |
1144 | int (*cb) (SSL *ssl, X509 **x509, |
1145 | EVP_PKEY **pkey)) | |
1146 | { | |
1147 | ctx->client_cert_cb = cb; | |
1148 | } | |
7806f3dd | 1149 | |
0f113f3e MC |
1150 | int (*SSL_CTX_get_client_cert_cb(SSL_CTX *ctx)) (SSL *ssl, X509 **x509, |
1151 | EVP_PKEY **pkey) { | |
1152 | return ctx->client_cert_cb; | |
1153 | } | |
7806f3dd | 1154 | |
368888bc DSH |
1155 | #ifndef OPENSSL_NO_ENGINE |
1156 | int SSL_CTX_set_client_cert_engine(SSL_CTX *ctx, ENGINE *e) | |
0f113f3e MC |
1157 | { |
1158 | if (!ENGINE_init(e)) { | |
1159 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, ERR_R_ENGINE_LIB); | |
1160 | return 0; | |
1161 | } | |
1162 | if (!ENGINE_get_ssl_client_cert_function(e)) { | |
1163 | SSLerr(SSL_F_SSL_CTX_SET_CLIENT_CERT_ENGINE, | |
1164 | SSL_R_NO_CLIENT_CERT_METHOD); | |
1165 | ENGINE_finish(e); | |
1166 | return 0; | |
1167 | } | |
1168 | ctx->client_cert_engine = e; | |
1169 | return 1; | |
1170 | } | |
368888bc DSH |
1171 | #endif |
1172 | ||
7806f3dd | 1173 | void SSL_CTX_set_cookie_generate_cb(SSL_CTX *ctx, |
0f113f3e MC |
1174 | int (*cb) (SSL *ssl, |
1175 | unsigned char *cookie, | |
1176 | unsigned int *cookie_len)) | |
1177 | { | |
1178 | ctx->app_gen_cookie_cb = cb; | |
1179 | } | |
7806f3dd NL |
1180 | |
1181 | void SSL_CTX_set_cookie_verify_cb(SSL_CTX *ctx, | |
a230b26e EK |
1182 | int (*cb) (SSL *ssl, |
1183 | const unsigned char *cookie, | |
0f113f3e MC |
1184 | unsigned int cookie_len)) |
1185 | { | |
1186 | ctx->app_verify_cookie_cb = cb; | |
1187 | } | |
7806f3dd | 1188 | |
a230b26e | 1189 | IMPLEMENT_PEM_rw(SSL_SESSION, SSL_SESSION, PEM_STRING_SSL_SESSION, SSL_SESSION) |