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0f113f3e 1/*
677963e5 2 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.
aa8f3d76 3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
c80149d9 4 * Copyright 2005 Nokia. All rights reserved.
bf21446a 5 *
846e33c7
RS		 6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
bf21446a 10 */
846e33c7 11
d02b48c6 12#include <stdio.h>
7b63c0fa 13#include "ssl_locl.h"
ec577822 14#include <openssl/objects.h>
bb7cd4e3 15#include <openssl/x509v3.h>
6434abbf 16#include <openssl/rand.h>
67c8e7f4 17#include <openssl/ocsp.h>
3c27208f
RS		 18#include <openssl/dh.h>
19#include <openssl/engine.h>
07bbc92c 20#include <openssl/async.h>
3c27208f 21#include <openssl/ct.h>
67dc995e 22#include "internal/cryptlib.h"
ae3947de 23#include "internal/rand.h"
cd420b0b 24#include "internal/refcount.h"
0f113f3e 25
df2ee0e2 26const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
0f113f3e
MC		 27
28SSL3_ENC_METHOD ssl3_undef_enc_method = {
29 /*
30 * evil casts, but these functions are only called if there's a library
31 * bug
32 */
72716e79 33 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
d102d9df 34 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
0f113f3e 35 ssl_undefined_function,
8c1a5343 36 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
0f113f3e
MC		 37 ssl_undefined_function,
38 (int (*)(SSL *, int))ssl_undefined_function,
6db6bc5a 39 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
0f113f3e 40 ssl_undefined_function,
0f113f3e
MC		 41 NULL, /* client_finished_label */
42 0, /* client_finished_label_len */
43 NULL, /* server_finished_label */
44 0, /* server_finished_label_len */
45 (int (*)(int))ssl_undefined_function,
46 (int (*)(SSL *, unsigned char *, size_t, const char *,
47 size_t, const unsigned char *, size_t,
48 int use_context))ssl_undefined_function,
49};
d02b48c6 50
07bbc92c
MC		 51struct ssl_async_args {
52 SSL *s;
53 void *buf;
348240c6 54 size_t num;
a230b26e 55 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 56 union {
eda75751 57 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 58 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 59 int (*func_other) (SSL *);
add2f5ca 60 } f;
07bbc92c
MC		 61};
62
919ba009
VD		 63static const struct {
64 uint8_t mtype;
65 uint8_t ord;
a230b26e 66 int nid;
919ba009 67} dane_mds[] = {
a230b26e
EK		 68 {
69 DANETLS_MATCHING_FULL, 0, NID_undef
70 },
71 {
72 DANETLS_MATCHING_2256, 1, NID_sha256
73 },
74 {
75 DANETLS_MATCHING_2512, 2, NID_sha512
76 },
919ba009
VD		 77};
78
79static int dane_ctx_enable(struct dane_ctx_st *dctx)
80{
81 const EVP_MD **mdevp;
82 uint8_t *mdord;
83 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 84 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 85 size_t i;
86
5ae4ceb9
VD		 87 if (dctx->mdevp != NULL)
88 return 1;
89
919ba009
VD		 90 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
91 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
92
93 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 94 OPENSSL_free(mdord);
919ba009
VD		 95 OPENSSL_free(mdevp);
96 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
97 return 0;
98 }
99
100 /* Install default entries */
101 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
102 const EVP_MD *md;
103
104 if (dane_mds[i].nid == NID_undef ||
105 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
106 continue;
107 mdevp[dane_mds[i].mtype] = md;
108 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
109 }
110
111 dctx->mdevp = mdevp;
112 dctx->mdord = mdord;
113 dctx->mdmax = mdmax;
114
115 return 1;
116}
117
118static void dane_ctx_final(struct dane_ctx_st *dctx)
119{
120 OPENSSL_free(dctx->mdevp);
121 dctx->mdevp = NULL;
122
123 OPENSSL_free(dctx->mdord);
124 dctx->mdord = NULL;
125 dctx->mdmax = 0;
126}
127
128static void tlsa_free(danetls_record *t)
129{
130 if (t == NULL)
131 return;
132 OPENSSL_free(t->data);
133 EVP_PKEY_free(t->spki);
134 OPENSSL_free(t);
135}
136
b9aec69a 137static void dane_final(SSL_DANE *dane)
919ba009
VD		 138{
139 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
140 dane->trecs = NULL;
141
142 sk_X509_pop_free(dane->certs, X509_free);
143 dane->certs = NULL;
144
145 X509_free(dane->mcert);
146 dane->mcert = NULL;
147 dane->mtlsa = NULL;
148 dane->mdpth = -1;
149 dane->pdpth = -1;
150}
151
152/*
153 * dane_copy - Copy dane configuration, sans verification state.
154 */
155static int ssl_dane_dup(SSL *to, SSL *from)
156{
157 int num;
158 int i;
159
160 if (!DANETLS_ENABLED(&from->dane))
161 return 1;
162
e431363f 163 num = sk_danetls_record_num(from->dane.trecs);
919ba009 164 dane_final(&to->dane);
5ae4ceb9 165 to->dane.flags = from->dane.flags;
9f6b22b8 166 to->dane.dctx = &to->ctx->dane;
7a908204 167 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 168
169 if (to->dane.trecs == NULL) {
170 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
171 return 0;
172 }
919ba009 173
919ba009
VD		 174 for (i = 0; i < num; ++i) {
175 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 176
919ba009
VD		 177 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
178 t->data, t->dlen) <= 0)
179 return 0;
180 }
181 return 1;
182}
183
a230b26e
EK		 184static int dane_mtype_set(struct dane_ctx_st *dctx,
185 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 186{
187 int i;
188
189 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
a230b26e 190 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 191 return 0;
192 }
193
194 if (mtype > dctx->mdmax) {
195 const EVP_MD **mdevp;
196 uint8_t *mdord;
a230b26e 197 int n = ((int)mtype) + 1;
919ba009
VD		 198
199 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
200 if (mdevp == NULL) {
201 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
202 return -1;
203 }
204 dctx->mdevp = mdevp;
205
206 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
207 if (mdord == NULL) {
208 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
209 return -1;
210 }
211 dctx->mdord = mdord;
212
213 /* Zero-fill any gaps */
a230b26e 214 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 215 mdevp[i] = NULL;
216 mdord[i] = 0;
217 }
218
219 dctx->mdmax = mtype;
220 }
221
222 dctx->mdevp[mtype] = md;
223 /* Coerce ordinal of disabled matching types to 0 */
224 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
225
226 return 1;
227}
228
b9aec69a 229static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 230{
231 if (mtype > dane->dctx->mdmax)
232 return NULL;
233 return dane->dctx->mdevp[mtype];
234}
235
a230b26e
EK		 236static int dane_tlsa_add(SSL_DANE *dane,
237 uint8_t usage,
238 uint8_t selector,
239 uint8_t mtype, unsigned char *data, size_t dlen)
919ba009
VD		 240{
241 danetls_record *t;
242 const EVP_MD *md = NULL;
243 int ilen = (int)dlen;
244 int i;
9f6b22b8 245 int num;
919ba009
VD		 246
247 if (dane->trecs == NULL) {
248 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
249 return -1;
250 }
251
252 if (ilen < 0 || dlen != (size_t)ilen) {
253 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
254 return 0;
255 }
256
257 if (usage > DANETLS_USAGE_LAST) {
258 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
259 return 0;
260 }
261
262 if (selector > DANETLS_SELECTOR_LAST) {
263 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
264 return 0;
265 }
266
267 if (mtype != DANETLS_MATCHING_FULL) {
268 md = tlsa_md_get(dane, mtype);
269 if (md == NULL) {
270 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
271 return 0;
272 }
273 }
274
275 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
276 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
277 return 0;
278 }
279 if (!data) {
280 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
281 return 0;
282 }
283
284 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
285 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
286 return -1;
287 }
288
289 t->usage = usage;
290 t->selector = selector;
291 t->mtype = mtype;
348240c6 292 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 293 if (t->data == NULL) {
294 tlsa_free(t);
295 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
296 return -1;
297 }
348240c6
MC		 298 memcpy(t->data, data, dlen);
299 t->dlen = dlen;
919ba009
VD		 300
301 /* Validate and cache full certificate or public key */
302 if (mtype == DANETLS_MATCHING_FULL) {
303 const unsigned char *p = data;
304 X509 *cert = NULL;
305 EVP_PKEY *pkey = NULL;
306
307 switch (selector) {
308 case DANETLS_SELECTOR_CERT:
348240c6 309 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 310 dlen != (size_t)(p - data)) {
311 tlsa_free(t);
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
313 return 0;
314 }
315 if (X509_get0_pubkey(cert) == NULL) {
316 tlsa_free(t);
317 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
318 return 0;
319 }
320
321 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
322 X509_free(cert);
323 break;
324 }
325
326 /*
327 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
328 * records that contain full certificates of trust-anchors that are
329 * not present in the wire chain. For usage PKIX-TA(0), we augment
330 * the chain with untrusted Full(0) certificates from DNS, in case
331 * they are missing from the chain.
332 */
333 if ((dane->certs == NULL &&
334 (dane->certs = sk_X509_new_null()) == NULL) ||
335 !sk_X509_push(dane->certs, cert)) {
336 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
337 X509_free(cert);
338 tlsa_free(t);
339 return -1;
340 }
341 break;
342
343 case DANETLS_SELECTOR_SPKI:
348240c6 344 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 345 dlen != (size_t)(p - data)) {
346 tlsa_free(t);
347 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
348 return 0;
349 }
350
351 /*
352 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
353 * records that contain full bare keys of trust-anchors that are
354 * not present in the wire chain.
355 */
356 if (usage == DANETLS_USAGE_DANE_TA)
357 t->spki = pkey;
358 else
359 EVP_PKEY_free(pkey);
360 break;
361 }
362 }
363
364 /*-
365 * Find the right insertion point for the new record.
366 *
367 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
368 * they can be processed first, as they require no chain building, and no
369 * expiration or hostname checks. Because DANE-EE(3) is numerically
370 * largest, this is accomplished via descending sort by "usage".
371 *
372 * We also sort in descending order by matching ordinal to simplify
373 * the implementation of digest agility in the verification code.
374 *
375 * The choice of order for the selector is not significant, so we
376 * use the same descending order for consistency.
377 */
9f6b22b8
VD		 378 num = sk_danetls_record_num(dane->trecs);
379 for (i = 0; i < num; ++i) {
919ba009 380 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 381
919ba009
VD		 382 if (rec->usage > usage)
383 continue;
384 if (rec->usage < usage)
385 break;
386 if (rec->selector > selector)
387 continue;
388 if (rec->selector < selector)
389 break;
390 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
391 continue;
392 break;
393 }
394
395 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
396 tlsa_free(t);
397 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
398 return -1;
399 }
400 dane->umask |= DANETLS_USAGE_BIT(usage);
401
402 return 1;
403}
404
c8feba72
BK		 405/*
406 * Return 0 if there is only one version configured and it was disabled
407 * at configure time. Return 1 otherwise.
408 */
409static int ssl_check_allowed_versions(int min_version, int max_version)
410{
411 int minisdtls = 0, maxisdtls = 0;
412
413 /* Figure out if we're doing DTLS versions or TLS versions */
414 if (min_version == DTLS1_BAD_VER
415 || min_version >> 8 == DTLS1_VERSION_MAJOR)
416 minisdtls = 1;
417 if (max_version == DTLS1_BAD_VER
418 || max_version >> 8 == DTLS1_VERSION_MAJOR)
419 maxisdtls = 1;
420 /* A wildcard version of 0 could be DTLS or TLS. */
421 if ((minisdtls && !maxisdtls && max_version != 0)
422 || (maxisdtls && !minisdtls && min_version != 0)) {
423 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
424 return 0;
425 }
426
427 if (minisdtls || maxisdtls) {
428 /* Do DTLS version checks. */
429 if (min_version == 0)
430 /* Ignore DTLS1_BAD_VER */
431 min_version = DTLS1_VERSION;
432 if (max_version == 0)
433 max_version = DTLS1_2_VERSION;
434#ifdef OPENSSL_NO_DTLS1_2
435 if (max_version == DTLS1_2_VERSION)
436 max_version = DTLS1_VERSION;
437#endif
438#ifdef OPENSSL_NO_DTLS1
439 if (min_version == DTLS1_VERSION)
440 min_version = DTLS1_2_VERSION;
441#endif
79b4444d
DMSP		 442 /* Done massaging versions; do the check. */
443 if (0
c8feba72
BK		 444#ifdef OPENSSL_NO_DTLS1
445 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
446 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
447#endif
448#ifdef OPENSSL_NO_DTLS1_2
449 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
450 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
451#endif
452 )
453 return 0;
454 } else {
455 /* Regular TLS version checks. */
79b4444d
DMSP		 456 if (min_version == 0)
457 min_version = SSL3_VERSION;
458 if (max_version == 0)
459 max_version = TLS1_3_VERSION;
c8feba72 460#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 461 if (max_version == TLS1_3_VERSION)
462 max_version = TLS1_2_VERSION;
c8feba72
BK		 463#endif
464#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 465 if (max_version == TLS1_2_VERSION)
466 max_version = TLS1_1_VERSION;
c8feba72
BK		 467#endif
468#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 469 if (max_version == TLS1_1_VERSION)
470 max_version = TLS1_VERSION;
c8feba72
BK		 471#endif
472#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 473 if (max_version == TLS1_VERSION)
474 max_version = SSL3_VERSION;
c8feba72
BK		 475#endif
476#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 477 if (min_version == SSL3_VERSION)
478 min_version = TLS1_VERSION;
c8feba72
BK		 479#endif
480#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 481 if (min_version == TLS1_VERSION)
482 min_version = TLS1_1_VERSION;
c8feba72
BK		 483#endif
484#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 485 if (min_version == TLS1_1_VERSION)
486 min_version = TLS1_2_VERSION;
c8feba72
BK		 487#endif
488#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 489 if (min_version == TLS1_2_VERSION)
490 min_version = TLS1_3_VERSION;
c8feba72 491#endif
79b4444d
DMSP		 492 /* Done massaging versions; do the check. */
493 if (0
c8feba72
BK		 494#ifdef OPENSSL_NO_SSL3
495 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
496#endif
497#ifdef OPENSSL_NO_TLS1
498 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
499#endif
500#ifdef OPENSSL_NO_TLS1_1
501 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
502#endif
503#ifdef OPENSSL_NO_TLS1_2
504 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
505#endif
506#ifdef OPENSSL_NO_TLS1_3
507 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
508#endif
509 )
510 return 0;
511 }
512 return 1;
513}
514
d31fb0b5
RS		 515static void clear_ciphers(SSL *s)
516{
517 /* clear the current cipher */
518 ssl_clear_cipher_ctx(s);
519 ssl_clear_hash_ctx(&s->read_hash);
520 ssl_clear_hash_ctx(&s->write_hash);
521}
522
4f43d0e7 523int SSL_clear(SSL *s)
0f113f3e 524{
0f113f3e
MC		 525 if (s->method == NULL) {
526 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 527 return 0;
0f113f3e 528 }
d02b48c6 529
0f113f3e
MC		 530 if (ssl_clear_bad_session(s)) {
531 SSL_SESSION_free(s->session);
532 s->session = NULL;
533 }
9368f865
MC		 534 SSL_SESSION_free(s->psksession);
535 s->psksession = NULL;
add8d0e9
MC		 536 OPENSSL_free(s->psksession_id);
537 s->psksession_id = NULL;
538 s->psksession_id_len = 0;
d62bfb39 539
0f113f3e
MC		 540 s->error = 0;
541 s->hit = 0;
542 s->shutdown = 0;
d02b48c6 543
0f113f3e
MC		 544 if (s->renegotiate) {
545 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
546 return 0;
547 }
d02b48c6 548
fe3a3291 549 ossl_statem_clear(s);
413c4f45 550
0f113f3e
MC		 551 s->version = s->method->version;
552 s->client_version = s->version;
553 s->rwstate = SSL_NOTHING;
d02b48c6 554
25aaa98a
RS		 555 BUF_MEM_free(s->init_buf);
556 s->init_buf = NULL;
d31fb0b5 557 clear_ciphers(s);
0f113f3e 558 s->first_packet = 0;
d02b48c6 559
44c04a2e
MC		 560 s->key_update = SSL_KEY_UPDATE_NONE;
561
919ba009
VD		 562 /* Reset DANE verification result state */
563 s->dane.mdpth = -1;
564 s->dane.pdpth = -1;
565 X509_free(s->dane.mcert);
566 s->dane.mcert = NULL;
567 s->dane.mtlsa = NULL;
568
569 /* Clear the verification result peername */
570 X509_VERIFY_PARAM_move_peername(s->param, NULL);
571
0f113f3e
MC		 572 /*
573 * Check to see if we were changed into a different method, if so, revert
24252537 574 * back.
0f113f3e 575 */
24252537 576 if (s->method != s->ctx->method) {
0f113f3e
MC		 577 s->method->ssl_free(s);
578 s->method = s->ctx->method;
579 if (!s->method->ssl_new(s))
a89325e4 580 return 0;
b77f3ed1
MC		 581 } else {
582 if (!s->method->ssl_clear(s))
583 return 0;
584 }
33d23b87 585
af9752e5 586 RECORD_LAYER_clear(&s->rlayer);
33d23b87 587
a89325e4 588 return 1;
0f113f3e 589}
d02b48c6 590
4f43d0e7 591/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 592int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
593{
594 STACK_OF(SSL_CIPHER) *sk;
595
596 ctx->method = meth;
597
598 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
599 &(ctx->cipher_list_by_id),
600 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
601 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 602 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 603 return 0;
0f113f3e 604 }
208fb891 605 return 1;
0f113f3e 606}
d02b48c6 607
4f43d0e7 608SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 609{
610 SSL *s;
611
612 if (ctx == NULL) {
613 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 614 return NULL;
0f113f3e
MC		 615 }
616 if (ctx->method == NULL) {
617 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 618 return NULL;
0f113f3e
MC		 619 }
620
b51bce94 621 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 622 if (s == NULL)
623 goto err;
0f113f3e 624
e6b10c34 625 s->references = 1;
16203f7b 626 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 627 if (s->lock == NULL) {
628 OPENSSL_free(s);
629 s = NULL;
ae3947de 630 goto err;
e6b10c34 631 }
ae3947de
RS		 632
633 /*
634 * If not using the standard RAND (say for fuzzing), then don't use a
635 * chained DRBG.
636 */
637 if (RAND_get_rand_method() == RAND_OpenSSL()) {
c16de9d8
DMSP		 638 s->drbg =
639 RAND_DRBG_new(RAND_DRBG_NID, RAND_DRBG_FLAG_CTR_USE_DF,
640 RAND_DRBG_get0_global());
0b14a5b7 641 if (s->drbg == NULL
c16de9d8
DMSP		 642 || RAND_DRBG_instantiate(s->drbg,
643 (const unsigned char *) SSL_version_str,
e6b10c34 644 sizeof(SSL_version_str) - 1) == 0)
ae3947de 645 goto err;
16203f7b
AG		 646 }
647
c036e210 648 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 649
0f113f3e 650 s->options = ctx->options;
5ae4ceb9 651 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 652 s->min_proto_version = ctx->min_proto_version;
653 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 654 s->mode = ctx->mode;
655 s->max_cert_list = ctx->max_cert_list;
3fc8d856 656 s->max_early_data = ctx->max_early_data;
0f113f3e 657
2c382349
KR		 658 /*
659 * Earlier library versions used to copy the pointer to the CERT, not
660 * its contents; only when setting new parameters for the per-SSL
661 * copy, ssl_cert_new would be called (and the direct reference to
662 * the per-SSL_CTX settings would be lost, but those still were
663 * indirectly accessed for various purposes, and for that reason they
664 * used to be known as s->ctx->default_cert). Now we don't look at the
665 * SSL_CTX's CERT after having duplicated it once.
666 */
667 s->cert = ssl_cert_dup(ctx->cert);
668 if (s->cert == NULL)
669 goto err;
0f113f3e 670
52e1d7b1 671 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 672 s->msg_callback = ctx->msg_callback;
673 s->msg_callback_arg = ctx->msg_callback_arg;
674 s->verify_mode = ctx->verify_mode;
675 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 676 s->record_padding_cb = ctx->record_padding_cb;
677 s->record_padding_arg = ctx->record_padding_arg;
678 s->block_padding = ctx->block_padding;
0f113f3e 679 s->sid_ctx_length = ctx->sid_ctx_length;
380a522f
MC		 680 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
681 goto err;
0f113f3e
MC		 682 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
683 s->verify_callback = ctx->default_verify_callback;
684 s->generate_session_id = ctx->generate_session_id;
685
686 s->param = X509_VERIFY_PARAM_new();
a71edf3b 687 if (s->param == NULL)
0f113f3e
MC		 688 goto err;
689 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e
MC		 690 s->quiet_shutdown = ctx->quiet_shutdown;
691 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 692 s->split_send_fragment = ctx->split_send_fragment;
693 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 694 if (s->max_pipelines > 1)
695 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 696 if (ctx->default_read_buf_len > 0)
697 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 698
16203f7b 699 SSL_CTX_up_ref(ctx);
0f113f3e 700 s->ctx = ctx;
aff8c126
RS		 701 s->ext.debug_cb = 0;
702 s->ext.debug_arg = NULL;
703 s->ext.ticket_expected = 0;
704 s->ext.status_type = ctx->ext.status_type;
705 s->ext.status_expected = 0;
706 s->ext.ocsp.ids = NULL;
707 s->ext.ocsp.exts = NULL;
708 s->ext.ocsp.resp = NULL;
709 s->ext.ocsp.resp_len = 0;
16203f7b 710 SSL_CTX_up_ref(ctx);
222da979 711 s->session_ctx = ctx;
a230b26e 712#ifndef OPENSSL_NO_EC
aff8c126
RS		 713 if (ctx->ext.ecpointformats) {
714 s->ext.ecpointformats =
715 OPENSSL_memdup(ctx->ext.ecpointformats,
716 ctx->ext.ecpointformats_len);
717 if (!s->ext.ecpointformats)
0f113f3e 718 goto err;
aff8c126
RS		 719 s->ext.ecpointformats_len =
720 ctx->ext.ecpointformats_len;
721 }
722 if (ctx->ext.supportedgroups) {
723 s->ext.supportedgroups =
724 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 725 ctx->ext.supportedgroups_len
b92d7b62 726 * sizeof(*ctx->ext.supportedgroups));
aff8c126 727 if (!s->ext.supportedgroups)
0f113f3e 728 goto err;
aff8c126 729 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 730 }
a230b26e
EK		 731#endif
732#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 733 s->ext.npn = NULL;
a230b26e 734#endif
6f017a8f 735
aff8c126
RS		 736 if (s->ctx->ext.alpn) {
737 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
738 if (s->ext.alpn == NULL)
0f113f3e 739 goto err;
aff8c126
RS		 740 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
741 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 742 }
d02b48c6 743
696178ed 744 s->verified_chain = NULL;
0f113f3e 745 s->verify_result = X509_V_OK;
d02b48c6 746
a974e64a
MC		 747 s->default_passwd_callback = ctx->default_passwd_callback;
748 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
749
0f113f3e 750 s->method = ctx->method;
d02b48c6 751
44c04a2e
MC		 752 s->key_update = SSL_KEY_UPDATE_NONE;
753
0f113f3e
MC		 754 if (!s->method->ssl_new(s))
755 goto err;
d02b48c6 756
0f113f3e 757 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 758
61986d32 759 if (!SSL_clear(s))
69f68237 760 goto err;
58964a49 761
25a807bc
F		 762 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
763 goto err;
58964a49 764
ddac1974 765#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 766 s->psk_client_callback = ctx->psk_client_callback;
767 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 768#endif
f46184bd
MC		 769 s->psk_find_session_cb = ctx->psk_find_session_cb;
770 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 771
07bbc92c
MC		 772 s->job = NULL;
773
ed29e82a
RP		 774#ifndef OPENSSL_NO_CT
775 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 776 ctx->ct_validation_callback_arg))
ed29e82a
RP		 777 goto err;
778#endif
779
16203f7b 780 return s;
0f113f3e 781 err:
62adbcee 782 SSL_free(s);
0f113f3e 783 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 784 return NULL;
0f113f3e 785}
d02b48c6 786
e417070c
RS		 787int SSL_is_dtls(const SSL *s)
788{
789 return SSL_IS_DTLS(s) ? 1 : 0;
790}
791
c5ebfcab 792int SSL_up_ref(SSL *s)
a18a31e4 793{
16203f7b 794 int i;
c5ebfcab 795
2f545ae4 796 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 797 return 0;
798
799 REF_PRINT_COUNT("SSL", s);
800 REF_ASSERT_ISNT(i < 2);
801 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 802}
803
0f113f3e
MC		 804int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
805 unsigned int sid_ctx_len)
806{
807 if (sid_ctx_len > sizeof ctx->sid_ctx) {
808 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
809 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
810 return 0;
811 }
812 ctx->sid_ctx_length = sid_ctx_len;
813 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 814
815 return 1;
0f113f3e 816}
4eb77b26 817
0f113f3e
MC		 818int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
819 unsigned int sid_ctx_len)
820{
821 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
822 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
823 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
824 return 0;
825 }
826 ssl->sid_ctx_length = sid_ctx_len;
827 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 828
829 return 1;
0f113f3e 830}
b4cadc6e 831
dc644fe2 832int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 833{
16203f7b 834 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 835 ctx->generate_session_id = cb;
16203f7b 836 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 837 return 1;
838}
dc644fe2
GT		 839
840int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 841{
16203f7b 842 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 843 ssl->generate_session_id = cb;
16203f7b 844 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 845 return 1;
846}
dc644fe2 847
f85c9904 848int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 849 unsigned int id_len)
850{
851 /*
852 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 853 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 854 * find if there's a session in the hash table that would conflict with
855 * any new session built out of this id/id_len and the ssl_version in use
856 * by this SSL.
857 */
858 SSL_SESSION r, *p;
859
860 if (id_len > sizeof r.session_id)
861 return 0;
862
863 r.ssl_version = ssl->version;
864 r.session_id_length = id_len;
865 memcpy(r.session_id, id, id_len);
866
e2bb9b9b
TS		 867 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
868 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
869 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 870 return (p != NULL);
871}
dc644fe2 872
bb7cd4e3 873int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 874{
875 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
876}
bb7cd4e3
DSH		 877
878int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 879{
880 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
881}
926a56bf 882
bb7cd4e3 883int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 884{
885 return X509_VERIFY_PARAM_set_trust(s->param, trust);
886}
bb7cd4e3
DSH		 887
888int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 889{
890 return X509_VERIFY_PARAM_set_trust(s->param, trust);
891}
bb7cd4e3 892
919ba009
VD		 893int SSL_set1_host(SSL *s, const char *hostname)
894{
895 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
896}
897
898int SSL_add1_host(SSL *s, const char *hostname)
899{
900 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
901}
902
903void SSL_set_hostflags(SSL *s, unsigned int flags)
904{
905 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
906}
907
4588cb44 908const char *SSL_get0_peername(SSL *s)
919ba009
VD		 909{
910 return X509_VERIFY_PARAM_get0_peername(s->param);
911}
912
913int SSL_CTX_dane_enable(SSL_CTX *ctx)
914{
915 return dane_ctx_enable(&ctx->dane);
916}
917
5ae4ceb9
VD		 918unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
919{
920 unsigned long orig = ctx->dane.flags;
921
922 ctx->dane.flags |= flags;
923 return orig;
924}
925
926unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
927{
928 unsigned long orig = ctx->dane.flags;
929
930 ctx->dane.flags &= ~flags;
931 return orig;
932}
933
919ba009
VD		 934int SSL_dane_enable(SSL *s, const char *basedomain)
935{
b9aec69a 936 SSL_DANE *dane = &s->dane;
919ba009
VD		 937
938 if (s->ctx->dane.mdmax == 0) {
939 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
940 return 0;
941 }
942 if (dane->trecs != NULL) {
943 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
944 return 0;
945 }
946
8d887efa
VD		 947 /*
948 * Default SNI name. This rejects empty names, while set1_host below
949 * accepts them and disables host name checks. To avoid side-effects with
950 * invalid input, set the SNI name first.
951 */
aff8c126 952 if (s->ext.hostname == NULL) {
dccd20d1 953 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 954 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 955 return -1;
8d887efa
VD		 956 }
957 }
958
919ba009
VD		 959 /* Primary RFC6125 reference identifier */
960 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
961 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
962 return -1;
963 }
964
919ba009
VD		 965 dane->mdpth = -1;
966 dane->pdpth = -1;
967 dane->dctx = &s->ctx->dane;
968 dane->trecs = sk_danetls_record_new_null();
969
970 if (dane->trecs == NULL) {
971 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
972 return -1;
973 }
974 return 1;
975}
976
5ae4ceb9
VD		 977unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
978{
979 unsigned long orig = ssl->dane.flags;
980
981 ssl->dane.flags |= flags;
982 return orig;
983}
984
985unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
986{
987 unsigned long orig = ssl->dane.flags;
988
989 ssl->dane.flags &= ~flags;
990 return orig;
991}
992
919ba009
VD		 993int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
994{
b9aec69a 995 SSL_DANE *dane = &s->dane;
919ba009 996
c0a445a9 997 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 998 return -1;
999 if (dane->mtlsa) {
1000 if (mcert)
1001 *mcert = dane->mcert;
1002 if (mspki)
1003 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1004 }
1005 return dane->mdpth;
1006}
1007
1008int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1009 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1010{
b9aec69a 1011 SSL_DANE *dane = &s->dane;
919ba009 1012
c0a445a9 1013 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1014 return -1;
1015 if (dane->mtlsa) {
1016 if (usage)
1017 *usage = dane->mtlsa->usage;
1018 if (selector)
1019 *selector = dane->mtlsa->selector;
1020 if (mtype)
1021 *mtype = dane->mtlsa->mtype;
1022 if (data)
1023 *data = dane->mtlsa->data;
1024 if (dlen)
1025 *dlen = dane->mtlsa->dlen;
1026 }
1027 return dane->mdpth;
1028}
1029
b9aec69a 1030SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1031{
1032 return &s->dane;
1033}
1034
1035int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1036 uint8_t mtype, unsigned char *data, size_t dlen)
1037{
1038 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1039}
1040
a230b26e
EK		 1041int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1042 uint8_t ord)
919ba009
VD		 1043{
1044 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1045}
1046
ccf11751 1047int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1048{
1049 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1050}
ccf11751
DSH		 1051
1052int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1053{
1054 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1055}
ccf11751 1056
7af31968 1057X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1058{
1059 return ctx->param;
1060}
7af31968
DSH		 1061
1062X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1063{
1064 return ssl->param;
1065}
7af31968 1066
a5ee80b9 1067void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1068{
1069 ssl_cert_clear_certs(s->cert);
1070}
a5ee80b9 1071
4f43d0e7 1072void SSL_free(SSL *s)
0f113f3e
MC		 1073{
1074 int i;
58964a49 1075
0f113f3e
MC		 1076 if (s == NULL)
1077 return;
e03ddfae 1078
2f545ae4 1079 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1080 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1081 if (i > 0)
1082 return;
f3f1cf84 1083 REF_ASSERT_ISNT(i < 0);
d02b48c6 1084
222561fe 1085 X509_VERIFY_PARAM_free(s->param);
919ba009 1086 dane_final(&s->dane);
0f113f3e
MC		 1087 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1088
b77f3ed1 1089 /* Ignore return value */
2e7dc7cd
MC		 1090 ssl_free_wbio_buffer(s);
1091
65e2d672 1092 BIO_free_all(s->wbio);
325cfa85 1093 BIO_free_all(s->rbio);
0f113f3e 1094
25aaa98a 1095 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1096
1097 /* add extra stuff */
25aaa98a
RS		 1098 sk_SSL_CIPHER_free(s->cipher_list);
1099 sk_SSL_CIPHER_free(s->cipher_list_by_id);
0f113f3e
MC		 1100
1101 /* Make the next call work :-) */
1102 if (s->session != NULL) {
1103 ssl_clear_bad_session(s);
1104 SSL_SESSION_free(s->session);
1105 }
9368f865 1106 SSL_SESSION_free(s->psksession);
add8d0e9 1107 OPENSSL_free(s->psksession_id);
0f113f3e 1108
d31fb0b5 1109 clear_ciphers(s);
d02b48c6 1110
e0e920b1 1111 ssl_cert_free(s->cert);
0f113f3e 1112 /* Free up if allocated */
d02b48c6 1113
aff8c126 1114 OPENSSL_free(s->ext.hostname);
222da979 1115 SSL_CTX_free(s->session_ctx);
e481f9b9 1116#ifndef OPENSSL_NO_EC
aff8c126
RS		 1117 OPENSSL_free(s->ext.ecpointformats);
1118 OPENSSL_free(s->ext.supportedgroups);
a230b26e 1119#endif /* OPENSSL_NO_EC */
aff8c126 1120 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1121#ifndef OPENSSL_NO_OCSP
aff8c126 1122 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1123#endif
ed29e82a
RP		 1124#ifndef OPENSSL_NO_CT
1125 SCT_LIST_free(s->scts);
aff8c126 1126 OPENSSL_free(s->ext.scts);
ed29e82a 1127#endif
aff8c126
RS		 1128 OPENSSL_free(s->ext.ocsp.resp);
1129 OPENSSL_free(s->ext.alpn);
cfef5027 1130 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1131 OPENSSL_free(s->clienthello);
0f113f3e 1132
fa7c2637 1133 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
0f113f3e 1134
696178ed
DSH		 1135 sk_X509_pop_free(s->verified_chain, X509_free);
1136
0f113f3e
MC		 1137 if (s->method != NULL)
1138 s->method->ssl_free(s);
1139
f161995e 1140 RECORD_LAYER_release(&s->rlayer);
33d23b87 1141
e0e920b1 1142 SSL_CTX_free(s->ctx);
7c3908dd 1143
ff75a257
MC		 1144 ASYNC_WAIT_CTX_free(s->waitctx);
1145
e481f9b9 1146#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1147 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1148#endif
1149
e783bae2 1150#ifndef OPENSSL_NO_SRTP
25aaa98a 1151 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1152#endif
1153
ae3947de 1154 RAND_DRBG_free(s->drbg);
16203f7b
AG		 1155 CRYPTO_THREAD_lock_free(s->lock);
1156
0f113f3e
MC		 1157 OPENSSL_free(s);
1158}
1159
65e2d672 1160void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1161{
65e2d672 1162 BIO_free_all(s->rbio);
3ffbe008
MC		 1163 s->rbio = rbio;
1164}
1165
65e2d672 1166void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1167{
1168 /*
1169 * If the output buffering BIO is still in place, remove it
1170 */
2e7dc7cd
MC		 1171 if (s->bbio != NULL)
1172 s->wbio = BIO_pop(s->wbio);
1173
65e2d672 1174 BIO_free_all(s->wbio);
0f113f3e 1175 s->wbio = wbio;
2e7dc7cd
MC		 1176
1177 /* Re-attach |bbio| to the new |wbio|. */
1178 if (s->bbio != NULL)
1179 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1180}
d02b48c6 1181
3ffbe008
MC		 1182void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1183{
65e2d672
MC		 1184 /*
1185 * For historical reasons, this function has many different cases in
1186 * ownership handling.
1187 */
1188
1189 /* If nothing has changed, do nothing */
1190 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1191 return;
1192
1193 /*
1194 * If the two arguments are equal then one fewer reference is granted by the
1195 * caller than we want to take
1196 */
1197 if (rbio != NULL && rbio == wbio)
1198 BIO_up_ref(rbio);
1199
1200 /*
1201 * If only the wbio is changed only adopt one reference.
1202 */
1203 if (rbio == SSL_get_rbio(s)) {
1204 SSL_set0_wbio(s, wbio);
1205 return;
1206 }
1207 /*
1208 * There is an asymmetry here for historical reasons. If only the rbio is
1209 * changed AND the rbio and wbio were originally different, then we only
1210 * adopt one reference.
1211 */
1212 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1213 SSL_set0_rbio(s, rbio);
1214 return;
1215 }
1216
1217 /* Otherwise, adopt both references. */
1218 SSL_set0_rbio(s, rbio);
1219 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1220}
1221
0821bcd4 1222BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1223{
2e7dc7cd 1224 return s->rbio;
0f113f3e 1225}
d02b48c6 1226
0821bcd4 1227BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1228{
2e7dc7cd
MC		 1229 if (s->bbio != NULL) {
1230 /*
1231 * If |bbio| is active, the true caller-configured BIO is its
1232 * |next_bio|.
1233 */
1234 return BIO_next(s->bbio);
1235 }
1236 return s->wbio;
0f113f3e 1237}
d02b48c6 1238
0821bcd4 1239int SSL_get_fd(const SSL *s)
0f113f3e 1240{
2e7dc7cd 1241 return SSL_get_rfd(s);
0f113f3e 1242}
24cbf3ef 1243
0821bcd4 1244int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1245{
1246 int ret = -1;
1247 BIO *b, *r;
1248
1249 b = SSL_get_rbio(s);
1250 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1251 if (r != NULL)
1252 BIO_get_fd(r, &ret);
26a7d938 1253 return ret;
0f113f3e 1254}
d02b48c6 1255
0821bcd4 1256int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1257{
1258 int ret = -1;
1259 BIO *b, *r;
1260
1261 b = SSL_get_wbio(s);
1262 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1263 if (r != NULL)
1264 BIO_get_fd(r, &ret);
26a7d938 1265 return ret;
0f113f3e 1266}
24cbf3ef 1267
bc36ee62 1268#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1269int SSL_set_fd(SSL *s, int fd)
1270{
1271 int ret = 0;
1272 BIO *bio = NULL;
1273
1274 bio = BIO_new(BIO_s_socket());
1275
1276 if (bio == NULL) {
1277 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1278 goto err;
1279 }
1280 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1281 SSL_set_bio(s, bio, bio);
1282 ret = 1;
1283 err:
26a7d938 1284 return ret;
0f113f3e 1285}
d02b48c6 1286
0f113f3e
MC		 1287int SSL_set_wfd(SSL *s, int fd)
1288{
2e7dc7cd 1289 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1290
2e7dc7cd
MC		 1291 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1292 || (int)BIO_get_fd(rbio, NULL) != fd) {
1293 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1294
1295 if (bio == NULL) {
1296 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1297 return 0;
0f113f3e
MC		 1298 }
1299 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1300 SSL_set0_wbio(s, bio);
2e7dc7cd 1301 } else {
65e2d672
MC		 1302 BIO_up_ref(rbio);
1303 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1304 }
1305 return 1;
0f113f3e
MC		 1306}
1307
1308int SSL_set_rfd(SSL *s, int fd)
1309{
2e7dc7cd 1310 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1311
2e7dc7cd
MC		 1312 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1313 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1314 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1315
1316 if (bio == NULL) {
1317 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1318 return 0;
0f113f3e
MC		 1319 }
1320 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1321 SSL_set0_rbio(s, bio);
2e7dc7cd 1322 } else {
65e2d672
MC		 1323 BIO_up_ref(wbio);
1324 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1325 }
1326
1327 return 1;
0f113f3e
MC		 1328}
1329#endif
ca03109c
BM		 1330
1331/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1332size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1333{
1334 size_t ret = 0;
1335
1336 if (s->s3 != NULL) {
1337 ret = s->s3->tmp.finish_md_len;
1338 if (count > ret)
1339 count = ret;
1340 memcpy(buf, s->s3->tmp.finish_md, count);
1341 }
1342 return ret;
1343}
ca03109c
BM		 1344
1345/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1346size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1347{
1348 size_t ret = 0;
ca03109c 1349
0f113f3e
MC		 1350 if (s->s3 != NULL) {
1351 ret = s->s3->tmp.peer_finish_md_len;
1352 if (count > ret)
1353 count = ret;
1354 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1355 }
1356 return ret;
1357}
ca03109c 1358
0821bcd4 1359int SSL_get_verify_mode(const SSL *s)
0f113f3e 1360{
26a7d938 1361 return s->verify_mode;
0f113f3e 1362}
d02b48c6 1363
0821bcd4 1364int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1365{
1366 return X509_VERIFY_PARAM_get_depth(s->param);
1367}
7f89714e 1368
0f113f3e 1369int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1370 return s->verify_callback;
0f113f3e 1371}
d02b48c6 1372
0821bcd4 1373int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1374{
26a7d938 1375 return ctx->verify_mode;
0f113f3e 1376}
d02b48c6 1377
0821bcd4 1378int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1379{
1380 return X509_VERIFY_PARAM_get_depth(ctx->param);
1381}
1382
1383int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1384 return ctx->default_verify_callback;
0f113f3e
MC		 1385}
1386
1387void SSL_set_verify(SSL *s, int mode,
1388 int (*callback) (int ok, X509_STORE_CTX *ctx))
1389{
1390 s->verify_mode = mode;
1391 if (callback != NULL)
1392 s->verify_callback = callback;
1393}
1394
1395void SSL_set_verify_depth(SSL *s, int depth)
1396{
1397 X509_VERIFY_PARAM_set_depth(s->param, depth);
1398}
1399
1400void SSL_set_read_ahead(SSL *s, int yes)
1401{
52e1d7b1 1402 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1403}
d02b48c6 1404
0821bcd4 1405int SSL_get_read_ahead(const SSL *s)
0f113f3e 1406{
52e1d7b1 1407 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1408}
d02b48c6 1409
0821bcd4 1410int SSL_pending(const SSL *s)
0f113f3e 1411{
8b0e934a
MC		 1412 size_t pending = s->method->ssl_pending(s);
1413
0f113f3e
MC		 1414 /*
1415 * SSL_pending cannot work properly if read-ahead is enabled
1416 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1417 * impossible to fix since SSL_pending cannot report errors that may be
1418 * observed while scanning the new data. (Note that SSL_pending() is
1419 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1420 *
1421 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1422 * we just return INT_MAX.
0f113f3e 1423 */
348240c6 1424 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1425}
d02b48c6 1426
49580f25
MC		 1427int SSL_has_pending(const SSL *s)
1428{
1429 /*
1430 * Similar to SSL_pending() but returns a 1 to indicate that we have
1431 * unprocessed data available or 0 otherwise (as opposed to the number of
1432 * bytes available). Unlike SSL_pending() this will take into account
1433 * read_ahead data. A 1 return simply indicates that we have unprocessed
1434 * data. That data may not result in any application data, or we may fail
1435 * to parse the records for some reason.
1436 */
b8c49611 1437 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1438 return 1;
1439
1440 return RECORD_LAYER_read_pending(&s->rlayer);
1441}
1442
0821bcd4 1443X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1444{
1445 X509 *r;
d02b48c6 1446
0f113f3e
MC		 1447 if ((s == NULL) || (s->session == NULL))
1448 r = NULL;
1449 else
1450 r = s->session->peer;
d02b48c6 1451
0f113f3e 1452 if (r == NULL)
26a7d938 1453 return r;
d02b48c6 1454
05f0fb9f 1455 X509_up_ref(r);
0f113f3e 1456
26a7d938 1457 return r;
0f113f3e 1458}
d02b48c6 1459
0821bcd4 1460STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1461{
1462 STACK_OF(X509) *r;
1463
c34b0f99 1464 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1465 r = NULL;
1466 else
c34b0f99 1467 r = s->session->peer_chain;
0f113f3e
MC		 1468
1469 /*
1470 * If we are a client, cert_chain includes the peer's own certificate; if
1471 * we are a server, it does not.
1472 */
1473
26a7d938 1474 return r;
0f113f3e
MC		 1475}
1476
1477/*
1478 * Now in theory, since the calling process own 't' it should be safe to
1479 * modify. We need to be able to read f without being hassled
1480 */
17dd65e6 1481int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1482{
16203f7b 1483 int i;
0f113f3e 1484 /* Do we need to to SSL locking? */
61986d32 1485 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1486 return 0;
69f68237 1487 }
0f113f3e
MC		 1488
1489 /*
87d9cafa 1490 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1491 */
1492 if (t->method != f->method) {
919ba009
VD		 1493 t->method->ssl_free(t);
1494 t->method = f->method;
1495 if (t->method->ssl_new(t) == 0)
1496 return 0;
0f113f3e
MC		 1497 }
1498
2f545ae4 1499 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1500 ssl_cert_free(t->cert);
1501 t->cert = f->cert;
348240c6 1502 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1503 return 0;
69f68237 1504 }
17dd65e6
MC		 1505
1506 return 1;
0f113f3e 1507}
d02b48c6 1508
58964a49 1509/* Fix this so it checks all the valid key/cert options */
0821bcd4 1510int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1511{
a230b26e
EK		 1512 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1513 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1514 return 0;
0f113f3e
MC		 1515 }
1516 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1517 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1518 return 0;
0f113f3e 1519 }
26a7d938
K		 1520 return X509_check_private_key
1521 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1522}
d02b48c6 1523
58964a49 1524/* Fix this function so that it takes an optional type parameter */
0821bcd4 1525int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1526{
1527 if (ssl == NULL) {
1528 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1529 return 0;
0f113f3e 1530 }
0f113f3e
MC		 1531 if (ssl->cert->key->x509 == NULL) {
1532 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1533 return 0;
0f113f3e
MC		 1534 }
1535 if (ssl->cert->key->privatekey == NULL) {
1536 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1537 return 0;
0f113f3e 1538 }
26a7d938
K		 1539 return X509_check_private_key(ssl->cert->key->x509,
1540 ssl->cert->key->privatekey);
0f113f3e 1541}
d02b48c6 1542
07bbc92c
MC		 1543int SSL_waiting_for_async(SSL *s)
1544{
e8aa8b6c 1545 if (s->job)
82676094
MC		 1546 return 1;
1547
07bbc92c
MC		 1548 return 0;
1549}
1550
ff75a257 1551int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1552{
ff75a257
MC		 1553 ASYNC_WAIT_CTX *ctx = s->waitctx;
1554
1555 if (ctx == NULL)
1556 return 0;
1557 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1558}
f4da39d2 1559
ff75a257
MC		 1560int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1561 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1562{
1563 ASYNC_WAIT_CTX *ctx = s->waitctx;
1564
1565 if (ctx == NULL)
1566 return 0;
1567 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1568 numdelfds);
f4da39d2
MC		 1569}
1570
4f43d0e7 1571int SSL_accept(SSL *s)
0f113f3e 1572{
c4c32155 1573 if (s->handshake_func == NULL) {
0f113f3e
MC		 1574 /* Not properly initialized yet */
1575 SSL_set_accept_state(s);
07bbc92c 1576 }
add2f5ca
MC		 1577
1578 return SSL_do_handshake(s);
0f113f3e 1579}
d02b48c6 1580
4f43d0e7 1581int SSL_connect(SSL *s)
0f113f3e 1582{
c4c32155 1583 if (s->handshake_func == NULL) {
0f113f3e
MC		 1584 /* Not properly initialized yet */
1585 SSL_set_connect_state(s);
add2f5ca 1586 }
b31b04d9 1587
add2f5ca 1588 return SSL_do_handshake(s);
0f113f3e 1589}
d02b48c6 1590
0821bcd4 1591long SSL_get_default_timeout(const SSL *s)
0f113f3e 1592{
26a7d938 1593 return s->method->get_timeout();
0f113f3e
MC		 1594}
1595
7fecbf6f 1596static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1597 int (*func) (void *))
1598{
add2f5ca 1599 int ret;
ff75a257
MC		 1600 if (s->waitctx == NULL) {
1601 s->waitctx = ASYNC_WAIT_CTX_new();
1602 if (s->waitctx == NULL)
1603 return -1;
1604 }
e8aa8b6c 1605 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1606 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1607 case ASYNC_ERR:
1608 s->rwstate = SSL_NOTHING;
7fecbf6f 1609 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1610 return -1;
1611 case ASYNC_PAUSE:
1612 s->rwstate = SSL_ASYNC_PAUSED;
1613 return -1;
fc7f190c
MC		 1614 case ASYNC_NO_JOBS:
1615 s->rwstate = SSL_ASYNC_NO_JOBS;
1616 return -1;
add2f5ca
MC		 1617 case ASYNC_FINISH:
1618 s->job = NULL;
1619 return ret;
1620 default:
1621 s->rwstate = SSL_NOTHING;
7fecbf6f 1622 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1623 /* Shouldn't happen */
1624 return -1;
1625 }
1626}
07bbc92c 1627
add2f5ca 1628static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1629{
1630 struct ssl_async_args *args;
1631 SSL *s;
1632 void *buf;
348240c6 1633 size_t num;
07bbc92c
MC		 1634
1635 args = (struct ssl_async_args *)vargs;
1636 s = args->s;
1637 buf = args->buf;
1638 num = args->num;
ec447924
MC		 1639 switch (args->type) {
1640 case READFUNC:
7ee8627f 1641 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1642 case WRITEFUNC:
7ee8627f 1643 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1644 case OTHERFUNC:
1645 return args->f.func_other(s);
1646 }
1647 return -1;
07bbc92c
MC		 1648}
1649
4ee7d3f9 1650int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1651{
c4c32155 1652 if (s->handshake_func == NULL) {
4ee7d3f9 1653 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1654 return -1;
1655 }
1656
1657 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1658 s->rwstate = SSL_NOTHING;
4ee7d3f9 1659 return 0;
0f113f3e 1660 }
07bbc92c 1661
564547e4
MC		 1662 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1663 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1664 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1665 return 0;
1666 }
564547e4
MC		 1667 /*
1668 * If we are a client and haven't received the ServerHello etc then we
1669 * better do that
1670 */
1671 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1672
e8aa8b6c 1673 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1674 struct ssl_async_args args;
eda75751 1675 int ret;
add2f5ca
MC		 1676
1677 args.s = s;
1678 args.buf = buf;
1679 args.num = num;
ec447924
MC		 1680 args.type = READFUNC;
1681 args.f.func_read = s->method->ssl_read;
add2f5ca 1682
eda75751 1683 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1684 *readbytes = s->asyncrw;
eda75751 1685 return ret;
07bbc92c 1686 } else {
54105ddd 1687 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1688 }
0f113f3e
MC		 1689}
1690
4ee7d3f9 1691int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1692{
1693 int ret;
54105ddd 1694 size_t readbytes;
eda75751
MC		 1695
1696 if (num < 0) {
4ee7d3f9 1697 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1698 return -1;
1699 }
1700
4ee7d3f9 1701 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1702
1703 /*
1704 * The cast is safe here because ret should be <= INT_MAX because num is
1705 * <= INT_MAX
1706 */
1707 if (ret > 0)
54105ddd 1708 ret = (int)readbytes;
eda75751
MC		 1709
1710 return ret;
1711}
1712
4ee7d3f9
KR		 1713int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1714{
1715 int ret = ssl_read_internal(s, buf, num, readbytes);
1716
1717 if (ret < 0)
1718 ret = 0;
1719 return ret;
1720}
1721
f533fbd4 1722int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1723{
1724 int ret;
1725
1726 if (!s->server) {
f533fbd4
MC		 1727 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1728 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1729 }
1730
d781d247
MC		 1731 switch (s->early_data_state) {
1732 case SSL_EARLY_DATA_NONE:
1733 if (!SSL_in_before(s)) {
f533fbd4
MC		 1734 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1735 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1736 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1737 }
1738 /* fall through */
1739
1740 case SSL_EARLY_DATA_ACCEPT_RETRY:
1741 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1742 ret = SSL_accept(s);
1743 if (ret <= 0) {
1744 /* NBIO or error */
1745 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1746 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1747 }
1748 /* fall through */
1749
1750 case SSL_EARLY_DATA_READ_RETRY:
1751 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1752 s->early_data_state = SSL_EARLY_DATA_READING;
1753 ret = SSL_read_ex(s, buf, num, readbytes);
1754 /*
ef6c191b
MC		 1755 * State machine will update early_data_state to
1756 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1757 * message
d781d247
MC		 1758 */
1759 if (ret > 0 || (ret <= 0 && s->early_data_state
1760 != SSL_EARLY_DATA_FINISHED_READING)) {
1761 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1762 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1763 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1764 }
1765 } else {
1766 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1767 }
1768 *readbytes = 0;
f533fbd4 1769 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1770
1771 default:
f533fbd4
MC		 1772 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1773 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1774 }
1775}
1776
f5b519c4 1777int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1778{
1779 return s->ext.early_data;
1780}
1781
4ee7d3f9 1782static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1783{
c4c32155 1784 if (s->handshake_func == NULL) {
4ee7d3f9 1785 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1786 return -1;
1787 }
1788
1789 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1790 return 0;
0f113f3e 1791 }
e8aa8b6c 1792 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1793 struct ssl_async_args args;
eda75751 1794 int ret;
0f113f3e 1795
add2f5ca
MC		 1796 args.s = s;
1797 args.buf = buf;
1798 args.num = num;
ec447924
MC		 1799 args.type = READFUNC;
1800 args.f.func_read = s->method->ssl_peek;
07bbc92c 1801
eda75751 1802 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1803 *readbytes = s->asyncrw;
eda75751 1804 return ret;
add2f5ca 1805 } else {
54105ddd 1806 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1807 }
07bbc92c
MC		 1808}
1809
4ee7d3f9 1810int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1811{
1812 int ret;
4ee7d3f9 1813 size_t readbytes;
7ee8627f
MC		 1814
1815 if (num < 0) {
4ee7d3f9 1816 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1817 return -1;
1818 }
1819
4ee7d3f9 1820 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1821
1822 /*
1823 * The cast is safe here because ret should be <= INT_MAX because num is
1824 * <= INT_MAX
1825 */
1826 if (ret > 0)
4ee7d3f9 1827 ret = (int)readbytes;
7ee8627f
MC		 1828
1829 return ret;
1830}
1831
4ee7d3f9
KR		 1832
1833int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1834{
1835 int ret = ssl_peek_internal(s, buf, num, readbytes);
1836
1837 if (ret < 0)
1838 ret = 0;
1839 return ret;
1840}
1841
1842int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1843{
c4c32155 1844 if (s->handshake_func == NULL) {
4ee7d3f9 1845 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1846 return -1;
1847 }
1848
1849 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1850 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1851 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1852 return -1;
0f113f3e 1853 }
07bbc92c 1854
ef6c191b 1855 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1856 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1857 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1858 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1859 return 0;
0a5ece5b 1860 }
564547e4
MC		 1861 /* If we are a client and haven't sent the Finished we better do that */
1862 ossl_statem_check_finish_init(s, 1);
49e7fe12 1863
e8aa8b6c 1864 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1865 int ret;
add2f5ca
MC		 1866 struct ssl_async_args args;
1867
1868 args.s = s;
1869 args.buf = (void *)buf;
1870 args.num = num;
ec447924
MC		 1871 args.type = WRITEFUNC;
1872 args.f.func_write = s->method->ssl_write;
add2f5ca 1873
7ee8627f
MC		 1874 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1875 *written = s->asyncrw;
1876 return ret;
07bbc92c 1877 } else {
7ee8627f 1878 return s->method->ssl_write(s, buf, num, written);
07bbc92c 1879 }
0f113f3e 1880}
d02b48c6 1881
4ee7d3f9
KR		 1882int SSL_write(SSL *s, const void *buf, int num)
1883{
1884 int ret;
1885 size_t written;
1886
1887 if (num < 0) {
1888 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1889 return -1;
1890 }
1891
1892 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1893
1894 /*
1895 * The cast is safe here because ret should be <= INT_MAX because num is
1896 * <= INT_MAX
1897 */
1898 if (ret > 0)
1899 ret = (int)written;
1900
1901 return ret;
1902}
1903
1904int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1905{
1906 int ret = ssl_write_internal(s, buf, num, written);
1907
1908 if (ret < 0)
1909 ret = 0;
1910 return ret;
1911}
1912
0665b4ed 1913int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 1914{
a0cb628b 1915 int ret, early_data_state;
49e7fe12 1916
49e7fe12
MC		 1917 switch (s->early_data_state) {
1918 case SSL_EARLY_DATA_NONE:
09f28874
MC		 1919 if (s->server
1920 || !SSL_in_before(s)
add8d0e9
MC		 1921 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1922 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 1923 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1924 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1925 return 0;
1926 }
1927 /* fall through */
1928
1929 case SSL_EARLY_DATA_CONNECT_RETRY:
1930 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1931 ret = SSL_connect(s);
1932 if (ret <= 0) {
1933 /* NBIO or error */
1934 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1935 return 0;
1936 }
1937 /* fall through */
1938
1939 case SSL_EARLY_DATA_WRITE_RETRY:
1940 s->early_data_state = SSL_EARLY_DATA_WRITING;
1941 ret = SSL_write_ex(s, buf, num, written);
1942 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1943 return ret;
1944
116d0da5 1945 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 1946 case SSL_EARLY_DATA_READ_RETRY:
1947 early_data_state = s->early_data_state;
09f28874
MC		 1948 /* We are a server writing to an unauthenticated client */
1949 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1950 ret = SSL_write_ex(s, buf, num, written);
bbea9f2c 1951 s->early_data_state = early_data_state;
09f28874
MC		 1952 return ret;
1953
49e7fe12 1954 default:
09f28874 1955 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1956 return 0;
1957 }
1958}
1959
4f43d0e7 1960int SSL_shutdown(SSL *s)
0f113f3e
MC		 1961{
1962 /*
1963 * Note that this function behaves differently from what one might
1964 * expect. Return values are 0 for no success (yet), 1 for success; but
1965 * calling it once is usually not enough, even if blocking I/O is used
1966 * (see ssl3_shutdown).
1967 */
1968
c4c32155 1969 if (s->handshake_func == NULL) {
0f113f3e
MC		 1970 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1971 return -1;
1972 }
1973
64f9f406 1974 if (!SSL_in_init(s)) {
e8aa8b6c 1975 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 1976 struct ssl_async_args args;
ec447924 1977
64f9f406
MC		 1978 args.s = s;
1979 args.type = OTHERFUNC;
1980 args.f.func_other = s->method->ssl_shutdown;
ec447924 1981
64f9f406
MC		 1982 return ssl_start_async_job(s, &args, ssl_io_intern);
1983 } else {
1984 return s->method->ssl_shutdown(s);
1985 }
ec447924 1986 } else {
64f9f406
MC		 1987 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1988 return -1;
ec447924 1989 }
0f113f3e 1990}
d02b48c6 1991
4fbfe86a 1992int SSL_key_update(SSL *s, int updatetype)
44c04a2e 1993{
f14afcaa 1994 /*
a9998e2f 1995 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 1996 * negotiated, and that it is appropriate to call SSL_key_update() instead
1997 * of SSL_renegotiate().
1998 */
44c04a2e
MC		 1999 if (!SSL_IS_TLS13(s)) {
2000 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2001 return 0;
2002 }
2003
2004 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2005 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2006 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2007 return 0;
2008 }
2009
2010 if (!SSL_is_init_finished(s)) {
2011 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2012 return 0;
2013 }
2014
2015 ossl_statem_set_in_init(s, 1);
44c04a2e 2016 s->key_update = updatetype;
44c04a2e
MC		 2017 return 1;
2018}
2019
4fbfe86a 2020int SSL_get_key_update_type(SSL *s)
53d1d07d
MC		 2021{
2022 return s->key_update;
2023}
2024
4f43d0e7 2025int SSL_renegotiate(SSL *s)
0f113f3e 2026{
44c04a2e
MC		 2027 if (SSL_IS_TLS13(s)) {
2028 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2029 return 0;
44c04a2e 2030 }
cda6b998 2031
db0f35dd
TS		 2032 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2033 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2034 return 0;
2035 }
44959ee4 2036
db0f35dd 2037 s->renegotiate = 1;
0f113f3e 2038 s->new_session = 1;
44959ee4 2039
26a7d938 2040 return s->method->ssl_renegotiate(s);
0f113f3e 2041}
d02b48c6 2042
44959ee4 2043int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2044{
db0f35dd
TS		 2045 if (SSL_IS_TLS13(s)) {
2046 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2047 return 0;
db0f35dd 2048 }
cda6b998 2049
db0f35dd
TS		 2050 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2051 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2052 return 0;
2053 }
c519e89f 2054
db0f35dd 2055 s->renegotiate = 1;
0f113f3e 2056 s->new_session = 0;
c519e89f 2057
26a7d938 2058 return s->method->ssl_renegotiate(s);
0f113f3e 2059}
44959ee4 2060
6b0e9fac 2061int SSL_renegotiate_pending(SSL *s)
0f113f3e
MC		 2062{
2063 /*
2064 * becomes true when negotiation is requested; false again once a
2065 * handshake has finished
2066 */
2067 return (s->renegotiate != 0);
2068}
2069
2070long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2071{
2072 long l;
2073
2074 switch (cmd) {
2075 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2076 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2077 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2078 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2079 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2080 return l;
0f113f3e
MC		 2081
2082 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2083 s->msg_callback_arg = parg;
2084 return 1;
2085
0f113f3e
MC		 2086 case SSL_CTRL_MODE:
2087 return (s->mode |= larg);
2088 case SSL_CTRL_CLEAR_MODE:
2089 return (s->mode &= ~larg);
2090 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2091 return (long)s->max_cert_list;
0f113f3e 2092 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2093 if (larg < 0)
2094 return 0;
2095 l = (long)s->max_cert_list;
2096 s->max_cert_list = (size_t)larg;
2097 return l;
0f113f3e
MC		 2098 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2099 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2100 return 0;
2101 s->max_send_fragment = larg;
d102d9df
MC		 2102 if (s->max_send_fragment < s->split_send_fragment)
2103 s->split_send_fragment = s->max_send_fragment;
2104 return 1;
2105 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2106 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2107 return 0;
2108 s->split_send_fragment = larg;
0f113f3e 2109 return 1;
d102d9df
MC		 2110 case SSL_CTRL_SET_MAX_PIPELINES:
2111 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2112 return 0;
2113 s->max_pipelines = larg;
94777c9c
MC		 2114 if (larg > 1)
2115 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2116 return 1;
0f113f3e
MC		 2117 case SSL_CTRL_GET_RI_SUPPORT:
2118 if (s->s3)
2119 return s->s3->send_connection_binding;
2120 else
2121 return 0;
2122 case SSL_CTRL_CERT_FLAGS:
2123 return (s->cert->cert_flags |= larg);
2124 case SSL_CTRL_CLEAR_CERT_FLAGS:
2125 return (s->cert->cert_flags &= ~larg);
2126
2127 case SSL_CTRL_GET_RAW_CIPHERLIST:
2128 if (parg) {
76106e60 2129 if (s->s3->tmp.ciphers_raw == NULL)
0f113f3e 2130 return 0;
76106e60
DSH		 2131 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2132 return (int)s->s3->tmp.ciphers_rawlen;
e9fa092e
EK		 2133 } else {
2134 return TLS_CIPHER_LEN;
2135 }
c5364614 2136 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2137 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2138 return -1;
dccd20d1 2139 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2140 return 1;
2141 else
2142 return 0;
7946ab33 2143 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2144 return ssl_check_allowed_versions(larg, s->max_proto_version)
2145 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2146 &s->min_proto_version);
3edabd3c
CH		 2147 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2148 return s->min_proto_version;
7946ab33 2149 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2150 return ssl_check_allowed_versions(s->min_proto_version, larg)
2151 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2152 &s->max_proto_version);
3edabd3c
CH		 2153 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2154 return s->max_proto_version;
0f113f3e 2155 default:
26a7d938 2156 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2157 }
2158}
2159
2160long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2161{
2162 switch (cmd) {
2163 case SSL_CTRL_SET_MSG_CALLBACK:
2164 s->msg_callback = (void (*)
2165 (int write_p, int version, int content_type,
2166 const void *buf, size_t len, SSL *ssl,
2167 void *arg))(fp);
2168 return 1;
2169
2170 default:
26a7d938 2171 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2172 }
2173}
d3442bc7 2174
3c1d6bbc 2175LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2176{
2177 return ctx->sessions;
2178}
2179
2180long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2181{
2182 long l;
2183 /* For some cases with ctx == NULL perform syntax checks */
2184 if (ctx == NULL) {
2185 switch (cmd) {
14536c8c 2186#ifndef OPENSSL_NO_EC
de4d764e
MC		 2187 case SSL_CTRL_SET_GROUPS_LIST:
2188 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2189#endif
2190 case SSL_CTRL_SET_SIGALGS_LIST:
2191 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2192 return tls1_set_sigalgs_list(NULL, parg, 0);
2193 default:
2194 return 0;
2195 }
2196 }
2197
2198 switch (cmd) {
2199 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2200 return ctx->read_ahead;
0f113f3e
MC		 2201 case SSL_CTRL_SET_READ_AHEAD:
2202 l = ctx->read_ahead;
2203 ctx->read_ahead = larg;
26a7d938 2204 return l;
0f113f3e
MC		 2205
2206 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2207 ctx->msg_callback_arg = parg;
2208 return 1;
2209
2210 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2211 return (long)ctx->max_cert_list;
0f113f3e 2212 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2213 if (larg < 0)
2214 return 0;
2215 l = (long)ctx->max_cert_list;
2216 ctx->max_cert_list = (size_t)larg;
2217 return l;
0f113f3e
MC		 2218
2219 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2220 if (larg < 0)
2221 return 0;
2222 l = (long)ctx->session_cache_size;
2223 ctx->session_cache_size = (size_t)larg;
2224 return l;
0f113f3e 2225 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2226 return (long)ctx->session_cache_size;
0f113f3e
MC		 2227 case SSL_CTRL_SET_SESS_CACHE_MODE:
2228 l = ctx->session_cache_mode;
2229 ctx->session_cache_mode = larg;
26a7d938 2230 return l;
0f113f3e 2231 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2232 return ctx->session_cache_mode;
0f113f3e
MC		 2233
2234 case SSL_CTRL_SESS_NUMBER:
26a7d938 2235 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2236 case SSL_CTRL_SESS_CONNECT:
26a7d938 2237 return ctx->stats.sess_connect;
0f113f3e 2238 case SSL_CTRL_SESS_CONNECT_GOOD:
26a7d938 2239 return ctx->stats.sess_connect_good;
0f113f3e 2240 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
26a7d938 2241 return ctx->stats.sess_connect_renegotiate;
0f113f3e 2242 case SSL_CTRL_SESS_ACCEPT:
26a7d938 2243 return ctx->stats.sess_accept;
0f113f3e 2244 case SSL_CTRL_SESS_ACCEPT_GOOD:
26a7d938 2245 return ctx->stats.sess_accept_good;
0f113f3e 2246 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
26a7d938 2247 return ctx->stats.sess_accept_renegotiate;
0f113f3e 2248 case SSL_CTRL_SESS_HIT:
26a7d938 2249 return ctx->stats.sess_hit;
0f113f3e 2250 case SSL_CTRL_SESS_CB_HIT:
26a7d938 2251 return ctx->stats.sess_cb_hit;
0f113f3e 2252 case SSL_CTRL_SESS_MISSES:
26a7d938 2253 return ctx->stats.sess_miss;
0f113f3e 2254 case SSL_CTRL_SESS_TIMEOUTS:
26a7d938 2255 return ctx->stats.sess_timeout;
0f113f3e 2256 case SSL_CTRL_SESS_CACHE_FULL:
26a7d938 2257 return ctx->stats.sess_cache_full;
0f113f3e
MC		 2258 case SSL_CTRL_MODE:
2259 return (ctx->mode |= larg);
2260 case SSL_CTRL_CLEAR_MODE:
2261 return (ctx->mode &= ~larg);
2262 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2263 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2264 return 0;
2265 ctx->max_send_fragment = larg;
d102d9df 2266 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2267 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2268 return 1;
d102d9df 2269 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2270 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2271 return 0;
2272 ctx->split_send_fragment = larg;
2273 return 1;
2274 case SSL_CTRL_SET_MAX_PIPELINES:
2275 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2276 return 0;
2277 ctx->max_pipelines = larg;
07077415 2278 return 1;
0f113f3e
MC		 2279 case SSL_CTRL_CERT_FLAGS:
2280 return (ctx->cert->cert_flags |= larg);
2281 case SSL_CTRL_CLEAR_CERT_FLAGS:
2282 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2283 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2284 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2285 && ssl_set_version_bound(ctx->method->version, (int)larg,
2286 &ctx->min_proto_version);
3edabd3c
CH		 2287 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2288 return ctx->min_proto_version;
7946ab33 2289 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2290 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2291 && ssl_set_version_bound(ctx->method->version, (int)larg,
2292 &ctx->max_proto_version);
3edabd3c
CH		 2293 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2294 return ctx->max_proto_version;
0f113f3e 2295 default:
26a7d938 2296 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2297 }
2298}
2299
2300long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2301{
2302 switch (cmd) {
2303 case SSL_CTRL_SET_MSG_CALLBACK:
2304 ctx->msg_callback = (void (*)
2305 (int write_p, int version, int content_type,
2306 const void *buf, size_t len, SSL *ssl,
2307 void *arg))(fp);
2308 return 1;
2309
2310 default:
26a7d938 2311 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2312 }
2313}
d3442bc7 2314
ccd86b68 2315int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2316{
90d9e49a
DSH		 2317 if (a->id > b->id)
2318 return 1;
2319 if (a->id < b->id)
2320 return -1;
2321 return 0;
0f113f3e
MC		 2322}
2323
2324int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2325 const SSL_CIPHER *const *bp)
2326{
90d9e49a
DSH		 2327 if ((*ap)->id > (*bp)->id)
2328 return 1;
2329 if ((*ap)->id < (*bp)->id)
2330 return -1;
2331 return 0;
0f113f3e 2332}
d02b48c6 2333
4f43d0e7 2334/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2335 * preference */
0821bcd4 2336STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2337{
2338 if (s != NULL) {
2339 if (s->cipher_list != NULL) {
26a7d938 2340 return s->cipher_list;
0f113f3e 2341 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2342 return s->ctx->cipher_list;
0f113f3e
MC		 2343 }
2344 }
26a7d938 2345 return NULL;
0f113f3e
MC		 2346}
2347
831eef2c
NM		 2348STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2349{
2350 if ((s == NULL) || (s->session == NULL) || !s->server)
2351 return NULL;
2352 return s->session->ciphers;
2353}
2354
8b8e5bed 2355STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2356{
2357 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2358 int i;
2359 ciphers = SSL_get_ciphers(s);
2360 if (!ciphers)
2361 return NULL;
2362 ssl_set_client_disabled(s);
2363 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2364 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2365 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2366 if (!sk)
2367 sk = sk_SSL_CIPHER_new_null();
2368 if (!sk)
2369 return NULL;
2370 if (!sk_SSL_CIPHER_push(sk, c)) {
2371 sk_SSL_CIPHER_free(sk);
2372 return NULL;
2373 }
2374 }
2375 }
2376 return sk;
2377}
8b8e5bed 2378
4f43d0e7 2379/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2380 * algorithm id */
f73e07cf 2381STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2382{
2383 if (s != NULL) {
2384 if (s->cipher_list_by_id != NULL) {
26a7d938 2385 return s->cipher_list_by_id;
0f113f3e 2386 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2387 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2388 }
2389 }
26a7d938 2390 return NULL;
0f113f3e 2391}
d02b48c6 2392
4f43d0e7 2393/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2394const char *SSL_get_cipher_list(const SSL *s, int n)
2395{
4a640fb6 2396 const SSL_CIPHER *c;
0f113f3e
MC		 2397 STACK_OF(SSL_CIPHER) *sk;
2398
2399 if (s == NULL)
26a7d938 2400 return NULL;
0f113f3e
MC		 2401 sk = SSL_get_ciphers(s);
2402 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2403 return NULL;
0f113f3e
MC		 2404 c = sk_SSL_CIPHER_value(sk, n);
2405 if (c == NULL)
26a7d938
K		 2406 return NULL;
2407 return c->name;
0f113f3e 2408}
d02b48c6 2409
9d5ac953
KY		 2410/** return a STACK of the ciphers available for the SSL_CTX and in order of
2411 * preference */
2412STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2413{
2414 if (ctx != NULL)
2415 return ctx->cipher_list;
2416 return NULL;
2417}
2418
25f923dd 2419/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2420int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2421{
2422 STACK_OF(SSL_CIPHER) *sk;
2423
2424 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2425 &ctx->cipher_list_by_id, str, ctx->cert);
2426 /*
2427 * ssl_create_cipher_list may return an empty stack if it was unable to
2428 * find a cipher matching the given rule string (for example if the rule
2429 * string specifies a cipher which has been disabled). This is not an
2430 * error as far as ssl_create_cipher_list is concerned, and hence
2431 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2432 */
2433 if (sk == NULL)
2434 return 0;
2435 else if (sk_SSL_CIPHER_num(sk) == 0) {
2436 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2437 return 0;
2438 }
2439 return 1;
2440}
d02b48c6 2441
4f43d0e7 2442/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2443int SSL_set_cipher_list(SSL *s, const char *str)
2444{
2445 STACK_OF(SSL_CIPHER) *sk;
2446
2447 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2448 &s->cipher_list_by_id, str, s->cert);
2449 /* see comment in SSL_CTX_set_cipher_list */
2450 if (sk == NULL)
2451 return 0;
2452 else if (sk_SSL_CIPHER_num(sk) == 0) {
2453 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2454 return 0;
2455 }
2456 return 1;
2457}
d02b48c6 2458
0f113f3e
MC		 2459char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2460{
2461 char *p;
2462 STACK_OF(SSL_CIPHER) *sk;
4a640fb6 2463 const SSL_CIPHER *c;
0f113f3e
MC		 2464 int i;
2465
2466 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
26a7d938 2467 return NULL;
0f113f3e
MC		 2468
2469 p = buf;
2470 sk = s->session->ciphers;
2471
2472 if (sk_SSL_CIPHER_num(sk) == 0)
2473 return NULL;
2474
2475 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2476 int n;
2477
2478 c = sk_SSL_CIPHER_value(sk, i);
2479 n = strlen(c->name);
2480 if (n + 1 > len) {
2481 if (p != buf)
2482 --p;
2483 *p = '\0';
2484 return buf;
2485 }
4cacc9d5 2486 strcpy(p, c->name);
0f113f3e
MC		 2487 p += n;
2488 *(p++) = ':';
2489 len -= n + 1;
2490 }
2491 p[-1] = '\0';
26a7d938 2492 return buf;
0f113f3e
MC		 2493}
2494
52b8dad8 2495/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2496 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2497 */
2498
f1fd4544 2499const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2500{
2501 if (type != TLSEXT_NAMETYPE_host_name)
2502 return NULL;
a13c20f6 2503
aff8c126
RS		 2504 return s->session && !s->ext.hostname ?
2505 s->session->ext.hostname : s->ext.hostname;
0f113f3e 2506}
ed3883d2 2507
f1fd4544 2508int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2509{
2510 if (s->session
aff8c126
RS		 2511 && (!s->ext.hostname ? s->session->
2512 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2513 return TLSEXT_NAMETYPE_host_name;
2514 return -1;
2515}
ee2ffc27 2516
0f113f3e
MC		 2517/*
2518 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2519 * expected that this function is called from the callback set by
0f113f3e
MC		 2520 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2521 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2522 * not included in the length. A byte string of length 0 is invalid. No byte
2523 * string may be truncated. The current, but experimental algorithm for
2524 * selecting the protocol is: 1) If the server doesn't support NPN then this
2525 * is indicated to the callback. In this case, the client application has to
2526 * abort the connection or have a default application level protocol. 2) If
2527 * the server supports NPN, but advertises an empty list then the client
f430ba31 2528 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2529 * fallback case was enacted. 3) Otherwise, the client finds the first
2530 * protocol in the server's list that it supports and selects this protocol.
2531 * This is because it's assumed that the server has better information about
2532 * which protocol a client should use. 4) If the client doesn't support any
2533 * of the server's advertised protocols, then this is treated the same as
2534 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2535 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2536 */
0f113f3e
MC		 2537int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2538 const unsigned char *server,
2539 unsigned int server_len,
a230b26e 2540 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2541{
2542 unsigned int i, j;
2543 const unsigned char *result;
2544 int status = OPENSSL_NPN_UNSUPPORTED;
2545
2546 /*
2547 * For each protocol in server preference order, see if we support it.
2548 */
2549 for (i = 0; i < server_len;) {
2550 for (j = 0; j < client_len;) {
2551 if (server[i] == client[j] &&
2552 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2553 /* We found a match */
2554 result = &server[i];
2555 status = OPENSSL_NPN_NEGOTIATED;
2556 goto found;
2557 }
2558 j += client[j];
2559 j++;
2560 }
2561 i += server[i];
2562 i++;
2563 }
2564
2565 /* There's no overlap between our protocols and the server's list. */
2566 result = client;
2567 status = OPENSSL_NPN_NO_OVERLAP;
2568
2569 found:
2570 *out = (unsigned char *)result + 1;
2571 *outlen = result[0];
2572 return status;
2573}
ee2ffc27 2574
e481f9b9 2575#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2576/*
2577 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2578 * client's requested protocol for this connection and returns 0. If the
2579 * client didn't request any protocol, then *data is set to NULL. Note that
2580 * the client can request any protocol it chooses. The value returned from
2581 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2582 * provided by the callback.
2583 */
0f113f3e
MC		 2584void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2585 unsigned *len)
2586{
aff8c126 2587 *data = s->ext.npn;
0f113f3e
MC		 2588 if (!*data) {
2589 *len = 0;
2590 } else {
aff8c126 2591 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2592 }
2593}
2594
2595/*
aff8c126 2596 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2597 * a TLS server needs a list of supported protocols for Next Protocol
2598 * Negotiation. The returned list must be in wire format. The list is
2599 * returned by setting |out| to point to it and |outlen| to its length. This
2600 * memory will not be modified, but one should assume that the SSL* keeps a
2601 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2602 * wishes to advertise. Otherwise, no such extension will be included in the
2603 * ServerHello.
2604 */
aff8c126 2605void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2606 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2607 void *arg)
0f113f3e 2608{
aff8c126
RS		 2609 ctx->ext.npn_advertised_cb = cb;
2610 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2611}
2612
2613/*
2614 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2615 * client needs to select a protocol from the server's provided list. |out|
2616 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2617 * The length of the protocol name must be written into |outlen|. The
2618 * server's advertised protocols are provided in |in| and |inlen|. The
2619 * callback can assume that |in| is syntactically valid. The client must
2620 * select a protocol. It is fatal to the connection if this callback returns
2621 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2622 */
aff8c126 2623void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2624 SSL_CTX_npn_select_cb_func cb,
aff8c126 2625 void *arg)
0f113f3e 2626{
aff8c126
RS		 2627 ctx->ext.npn_select_cb = cb;
2628 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2629}
e481f9b9 2630#endif
a398f821 2631
0f113f3e
MC		 2632/*
2633 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2634 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2635 * length-prefixed strings). Returns 0 on success.
2636 */
2637int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2638 unsigned int protos_len)
0f113f3e 2639{
aff8c126
RS		 2640 OPENSSL_free(ctx->ext.alpn);
2641 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2642 if (ctx->ext.alpn == NULL) {
72e9be3d 2643 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2644 return 1;
72e9be3d 2645 }
aff8c126 2646 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2647
2648 return 0;
2649}
2650
2651/*
2652 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2653 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2654 * length-prefixed strings). Returns 0 on success.
2655 */
2656int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2657 unsigned int protos_len)
0f113f3e 2658{
aff8c126
RS		 2659 OPENSSL_free(ssl->ext.alpn);
2660 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2661 if (ssl->ext.alpn == NULL) {
72e9be3d 2662 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2663 return 1;
72e9be3d 2664 }
aff8c126 2665 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2666
2667 return 0;
2668}
2669
2670/*
2671 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2672 * called during ClientHello processing in order to select an ALPN protocol
2673 * from the client's list of offered protocols.
2674 */
2675void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2676 SSL_CTX_alpn_select_cb_func cb,
2677 void *arg)
0f113f3e 2678{
aff8c126
RS		 2679 ctx->ext.alpn_select_cb = cb;
2680 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2681}
2682
2683/*
69687aa8
F		 2684 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2685 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2686 * (not including the leading length-prefix byte). If the server didn't
2687 * respond with a negotiated protocol then |*len| will be zero.
2688 */
6f017a8f 2689void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2690 unsigned int *len)
0f113f3e
MC		 2691{
2692 *data = NULL;
2693 if (ssl->s3)
2694 *data = ssl->s3->alpn_selected;
2695 if (*data == NULL)
2696 *len = 0;
2697 else
348240c6 2698 *len = (unsigned int)ssl->s3->alpn_selected_len;
0f113f3e
MC		 2699}
2700
74b4b494 2701int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2702 const char *label, size_t llen,
23cec1f4 2703 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2704 int use_context)
2705{
c8a18468 2706 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2707 return -1;
e0af0405 2708
0f113f3e 2709 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2710 llen, context,
2711 contextlen, use_context);
0f113f3e 2712}
e0af0405 2713
3c1d6bbc 2714static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2715{
bd5d27c1 2716 const unsigned char *session_id = a->session_id;
0f113f3e 2717 unsigned long l;
bd5d27c1
DB		 2718 unsigned char tmp_storage[4];
2719
2720 if (a->session_id_length < sizeof(tmp_storage)) {
2721 memset(tmp_storage, 0, sizeof(tmp_storage));
2722 memcpy(tmp_storage, a->session_id, a->session_id_length);
2723 session_id = tmp_storage;
2724 }
0f113f3e
MC		 2725
2726 l = (unsigned long)
bd5d27c1
DB		 2727 ((unsigned long)session_id[0]) |
2728 ((unsigned long)session_id[1] << 8L) |
2729 ((unsigned long)session_id[2] << 16L) |
2730 ((unsigned long)session_id[3] << 24L);
26a7d938 2731 return l;
0f113f3e
MC		 2732}
2733
2734/*
2735 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 2736 * coarser function than this one) is changed, ensure
0f113f3e
MC		 2737 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2738 * being able to construct an SSL_SESSION that will collide with any existing
2739 * session with a matching session ID.
2740 */
2741static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2742{
2743 if (a->ssl_version != b->ssl_version)
208fb891 2744 return 1;
0f113f3e 2745 if (a->session_id_length != b->session_id_length)
208fb891 2746 return 1;
26a7d938 2747 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 2748}
2749
2750/*
2751 * These wrapper functions should remain rather than redeclaring
d0fa136c 2752 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 2753 * variable. The reason is that the functions aren't static, they're exposed
2754 * via ssl.h.
2755 */
97b17195 2756
4ebb342f 2757SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 2758{
2759 SSL_CTX *ret = NULL;
2760
2761 if (meth == NULL) {
2762 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 2763 return NULL;
0f113f3e
MC		 2764 }
2765
0fc32b07
MC		 2766 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2767 return NULL;
7fa792d1 2768
0f113f3e
MC		 2769 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2770 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2771 goto err;
2772 }
b51bce94 2773 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 2774 if (ret == NULL)
2775 goto err;
2776
0f113f3e 2777 ret->method = meth;
7946ab33
KR		 2778 ret->min_proto_version = 0;
2779 ret->max_proto_version = 0;
0f113f3e
MC		 2780 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2781 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 2782 /* We take the system default. */
0f113f3e 2783 ret->session_timeout = meth->get_timeout();
0f113f3e 2784 ret->references = 1;
16203f7b
AG		 2785 ret->lock = CRYPTO_THREAD_lock_new();
2786 if (ret->lock == NULL) {
2787 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2788 OPENSSL_free(ret);
2789 return NULL;
2790 }
0f113f3e 2791 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 2792 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 2793 if ((ret->cert = ssl_cert_new()) == NULL)
2794 goto err;
2795
62d0577e 2796 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 2797 if (ret->sessions == NULL)
2798 goto err;
2799 ret->cert_store = X509_STORE_new();
2800 if (ret->cert_store == NULL)
2801 goto err;
ed29e82a
RP		 2802#ifndef OPENSSL_NO_CT
2803 ret->ctlog_store = CTLOG_STORE_new();
2804 if (ret->ctlog_store == NULL)
2805 goto err;
2806#endif
61986d32 2807 if (!ssl_create_cipher_list(ret->method,
a230b26e
EK		 2808 &ret->cipher_list, &ret->cipher_list_by_id,
2809 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2810 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 2811 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2812 goto err2;
2813 }
2814
2815 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 2816 if (ret->param == NULL)
0f113f3e
MC		 2817 goto err;
2818
2819 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2820 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2821 goto err2;
2822 }
2823 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2824 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2825 goto err2;
2826 }
2827
fa7c2637 2828 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 2829 goto err;
2830
25a807bc
F		 2831 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2832 goto err;
0f113f3e 2833
0f113f3e
MC		 2834 /* No compression for DTLS */
2835 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2836 ret->comp_methods = SSL_COMP_get_compression_methods();
2837
2838 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 2839 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 2840
4e2e1ec9 2841 /* Setup RFC5077 ticket keys */
aff8c126
RS		 2842 if ((RAND_bytes(ret->ext.tick_key_name,
2843 sizeof(ret->ext.tick_key_name)) <= 0)
2844 || (RAND_bytes(ret->ext.tick_hmac_key,
2845 sizeof(ret->ext.tick_hmac_key)) <= 0)
2846 || (RAND_bytes(ret->ext.tick_aes_key,
2847 sizeof(ret->ext.tick_aes_key)) <= 0))
0f113f3e 2848 ret->options |= SSL_OP_NO_TICKET;
6434abbf 2849
edc032b5 2850#ifndef OPENSSL_NO_SRP
61986d32 2851 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 2852 goto err;
edc032b5 2853#endif
4db9677b 2854#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 2855# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2856# define eng_strx(x) #x
2857# define eng_str(x) eng_strx(x)
2858 /* Use specific client engine automatically... ignore errors */
2859 {
2860 ENGINE *eng;
2861 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2862 if (!eng) {
2863 ERR_clear_error();
2864 ENGINE_load_builtin_engines();
2865 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2866 }
2867 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2868 ERR_clear_error();
2869 }
2870# endif
2871#endif
2872 /*
2873 * Default is to connect to non-RI servers. When RI is more widely
2874 * deployed might change this.
2875 */
2876 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 2877 /*
2878 * Disable compression by default to prevent CRIME. Applications can
2879 * re-enable compression by configuring
2880 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2881 * or by using the SSL_CONF library.
2882 */
2883 ret->options |= SSL_OP_NO_COMPRESSION;
0f113f3e 2884
aff8c126 2885 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 2886
bfa9a9af
MC		 2887 /*
2888 * Default max early data is a fully loaded single record. Could be split
2889 * across multiple records in practice
2890 */
2891 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2892
16203f7b 2893 return ret;
0f113f3e
MC		 2894 err:
2895 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2896 err2:
e0e920b1 2897 SSL_CTX_free(ret);
16203f7b 2898 return NULL;
0f113f3e 2899}
d02b48c6 2900
c5ebfcab 2901int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 2902{
16203f7b 2903 int i;
c5ebfcab 2904
2f545ae4 2905 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 2906 return 0;
2907
2908 REF_PRINT_COUNT("SSL_CTX", ctx);
2909 REF_ASSERT_ISNT(i < 2);
2910 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 2911}
2912
4f43d0e7 2913void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 2914{
2915 int i;
d02b48c6 2916
0f113f3e
MC		 2917 if (a == NULL)
2918 return;
d02b48c6 2919
2f545ae4 2920 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 2921 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 2922 if (i > 0)
2923 return;
f3f1cf84 2924 REF_ASSERT_ISNT(i < 0);
0f113f3e 2925
222561fe 2926 X509_VERIFY_PARAM_free(a->param);
919ba009 2927 dane_ctx_final(&a->dane);
0f113f3e
MC		 2928
2929 /*
2930 * Free internal session cache. However: the remove_cb() may reference
2931 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2932 * after the sessions were flushed.
2933 * As the ex_data handling routines might also touch the session cache,
2934 * the most secure solution seems to be: empty (flush) the cache, then
2935 * free ex_data, then finally free the cache.
2936 * (See ticket [openssl.org #212].)
2937 */
2938 if (a->sessions != NULL)
2939 SSL_CTX_flush_sessions(a, 0);
2940
2941 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 2942 lh_SSL_SESSION_free(a->sessions);
222561fe 2943 X509_STORE_free(a->cert_store);
ed29e82a
RP		 2944#ifndef OPENSSL_NO_CT
2945 CTLOG_STORE_free(a->ctlog_store);
2946#endif
25aaa98a
RS		 2947 sk_SSL_CIPHER_free(a->cipher_list);
2948 sk_SSL_CIPHER_free(a->cipher_list_by_id);
e0e920b1 2949 ssl_cert_free(a->cert);
fa7c2637 2950 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
222561fe 2951 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 2952 a->comp_methods = NULL;
e783bae2 2953#ifndef OPENSSL_NO_SRTP
25aaa98a 2954 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 2955#endif
edc032b5 2956#ifndef OPENSSL_NO_SRP
0f113f3e 2957 SSL_CTX_SRP_CTX_free(a);
edc032b5 2958#endif
bdfe932d 2959#ifndef OPENSSL_NO_ENGINE
7c96dbcd 2960 ENGINE_finish(a->client_cert_engine);
ddac1974 2961#endif
8671b898 2962
e481f9b9 2963#ifndef OPENSSL_NO_EC
aff8c126
RS		 2964 OPENSSL_free(a->ext.ecpointformats);
2965 OPENSSL_free(a->ext.supportedgroups);
8671b898 2966#endif
aff8c126 2967 OPENSSL_free(a->ext.alpn);
8671b898 2968
16203f7b
AG		 2969 CRYPTO_THREAD_lock_free(a->lock);
2970
0f113f3e
MC		 2971 OPENSSL_free(a);
2972}
d02b48c6 2973
3ae76679 2974void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 2975{
2976 ctx->default_passwd_callback = cb;
2977}
2978
2979void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2980{
2981 ctx->default_passwd_callback_userdata = u;
2982}
2983
0c452abc
CH		 2984pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2985{
2986 return ctx->default_passwd_callback;
2987}
2988
2989void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
2990{
2991 return ctx->default_passwd_callback_userdata;
2992}
2993
a974e64a
MC		 2994void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
2995{
2996 s->default_passwd_callback = cb;
2997}
2998
2999void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3000{
3001 s->default_passwd_callback_userdata = u;
3002}
3003
0c452abc
CH		 3004pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3005{
3006 return s->default_passwd_callback;
3007}
3008
3009void *SSL_get_default_passwd_cb_userdata(SSL *s)
3010{
3011 return s->default_passwd_callback_userdata;
3012}
3013
0f113f3e
MC		 3014void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3015 int (*cb) (X509_STORE_CTX *, void *),
3016 void *arg)
3017{
3018 ctx->app_verify_callback = cb;
3019 ctx->app_verify_arg = arg;
3020}
3021
3022void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3023 int (*cb) (int, X509_STORE_CTX *))
3024{
3025 ctx->verify_mode = mode;
3026 ctx->default_verify_callback = cb;
3027}
3028
3029void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3030{
3031 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3032}
3033
a230b26e 3034void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3035{
3036 ssl_cert_set_cert_cb(c->cert, cb, arg);
3037}
3038
3039void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3040{
3041 ssl_cert_set_cert_cb(s->cert, cb, arg);
3042}
18d71588 3043
2cf28d61 3044void ssl_set_masks(SSL *s)
0f113f3e 3045{
6383d316 3046 CERT *c = s->cert;
f7d53487 3047 uint32_t *pvalid = s->s3->tmp.valid_flags;
bc71f910 3048 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3049 unsigned long mask_k, mask_a;
10bf4fc2 3050#ifndef OPENSSL_NO_EC
361a1191 3051 int have_ecc_cert, ecdsa_ok;
14536c8c 3052#endif
0f113f3e
MC		 3053 if (c == NULL)
3054 return;
d02b48c6 3055
bc36ee62 3056#ifndef OPENSSL_NO_DH
0f113f3e 3057 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3058#else
361a1191 3059 dh_tmp = 0;
d02b48c6
RE		 3060#endif
3061
d0ff28f8 3062 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3063 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3064 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3065#ifndef OPENSSL_NO_EC
6383d316 3066 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3067#endif
0f113f3e
MC		 3068 mask_k = 0;
3069 mask_a = 0;
0e1dba93 3070
d02b48c6 3071#ifdef CIPHER_DEBUG
b7557ccf
AG		 3072 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3073 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e
MC		 3074#endif
3075
2a9b9654 3076#ifndef OPENSSL_NO_GOST
4020c0b3 3077 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3078 mask_k |= SSL_kGOST;
3079 mask_a |= SSL_aGOST12;
3080 }
4020c0b3 3081 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3082 mask_k |= SSL_kGOST;
3083 mask_a |= SSL_aGOST12;
3084 }
4020c0b3 3085 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3086 mask_k |= SSL_kGOST;
3087 mask_a |= SSL_aGOST01;
3088 }
2a9b9654 3089#endif
0f113f3e 3090
361a1191 3091 if (rsa_enc)
0f113f3e 3092 mask_k |= SSL_kRSA;
d02b48c6 3093
0f113f3e
MC		 3094 if (dh_tmp)
3095 mask_k |= SSL_kDHE;
d02b48c6 3096
6aaa29fb
DSH		 3097 /*
3098 * If we only have an RSA-PSS certificate allow RSA authentication
3099 * if TLS 1.2 and peer supports it.
3100 */
3101
3102 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3103 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3104 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3105 mask_a |= SSL_aRSA;
d02b48c6 3106
0f113f3e
MC		 3107 if (dsa_sign) {
3108 mask_a |= SSL_aDSS;
0f113f3e 3109 }
d02b48c6 3110
0f113f3e 3111 mask_a |= SSL_aNULL;
d02b48c6 3112
0f113f3e
MC		 3113 /*
3114 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3115 * depending on the key usage extension.
3116 */
14536c8c 3117#ifndef OPENSSL_NO_EC
0f113f3e 3118 if (have_ecc_cert) {
a8d8e06b 3119 uint32_t ex_kusage;
4020c0b3 3120 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3121 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3122 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3123 ecdsa_ok = 0;
c7c46256 3124 if (ecdsa_ok)
0f113f3e 3125 mask_a |= SSL_aECDSA;
0f113f3e 3126 }
b2021556
DSH		 3127 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3128 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3129 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3130 && TLS1_get_version(s) == TLS1_2_VERSION)
3131 mask_a |= SSL_aECDSA;
14536c8c 3132#endif
ea262260 3133
10bf4fc2 3134#ifndef OPENSSL_NO_EC
fe6ef247 3135 mask_k |= SSL_kECDHE;
ea262260 3136#endif
ddac1974
NL		 3137
3138#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3139 mask_k |= SSL_kPSK;
3140 mask_a |= SSL_aPSK;
526f94ad
DSH		 3141 if (mask_k & SSL_kRSA)
3142 mask_k |= SSL_kRSAPSK;
3143 if (mask_k & SSL_kDHE)
3144 mask_k |= SSL_kDHEPSK;
3145 if (mask_k & SSL_kECDHE)
3146 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3147#endif
3148
4d69f9e6
DSH		 3149 s->s3->tmp.mask_k = mask_k;
3150 s->s3->tmp.mask_a = mask_a;
0f113f3e 3151}
d02b48c6 3152
ef236ec3
DSH		 3153#ifndef OPENSSL_NO_EC
3154
a2f9200f 3155int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3156{
ce0c1f2b 3157 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3158 /* key usage, if present, must allow signing */
ce0c1f2b 3159 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3160 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3161 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3162 return 0;
3163 }
3164 }
0f113f3e
MC		 3165 return 1; /* all checks are ok */
3166}
ea262260 3167
ef236ec3
DSH		 3168#endif
3169
a398f821 3170int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3171 size_t *serverinfo_length)
3172{
a497cf25 3173 CERT_PKEY *cpk = s->s3->tmp.cert;
0f113f3e
MC		 3174 *serverinfo_length = 0;
3175
a497cf25 3176 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3177 return 0;
3178
a497cf25
DSH		 3179 *serverinfo = cpk->serverinfo;
3180 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3181 return 1;
3182}
0f113f3e
MC		 3183
3184void ssl_update_cache(SSL *s, int mode)
3185{
3186 int i;
3187
3188 /*
3189 * If the session_id_length is 0, we are not supposed to cache it, and it
3190 * would be rather hard to do anyway :-)
3191 */
3192 if (s->session->session_id_length == 0)
3193 return;
3194
3195 i = s->session_ctx->session_cache_mode;
5d61491c
MC		 3196 if ((i & mode) != 0
3197 && (!s->hit || SSL_IS_TLS13(s))
3198 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
0f113f3e 3199 || SSL_CTX_add_session(s->session_ctx, s->session))
5d61491c 3200 && s->session_ctx->new_session_cb != NULL) {
16203f7b 3201 SSL_SESSION_up_ref(s->session);
0f113f3e
MC		 3202 if (!s->session_ctx->new_session_cb(s, s->session))
3203 SSL_SESSION_free(s->session);
3204 }
3205
3206 /* auto flush every 255 connections */
3207 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3208 if ((((mode & SSL_SESS_CACHE_CLIENT)
3209 ? s->session_ctx->stats.sess_connect_good
3210 : s->session_ctx->stats.sess_accept_good) & 0xff) == 0xff) {
3211 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3212 }
3213 }
3214}
d02b48c6 3215
ba168244 3216const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
0f113f3e
MC		 3217{
3218 return ctx->method;
3219}
ba168244 3220
4ebb342f 3221const SSL_METHOD *SSL_get_ssl_method(SSL *s)
0f113f3e 3222{
26a7d938 3223 return s->method;
0f113f3e 3224}
d02b48c6 3225
4ebb342f 3226int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3227{
0f113f3e
MC		 3228 int ret = 1;
3229
3230 if (s->method != meth) {
919ba009 3231 const SSL_METHOD *sm = s->method;
a230b26e 3232 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3233
919ba009 3234 if (sm->version == meth->version)
0f113f3e
MC		 3235 s->method = meth;
3236 else {
919ba009 3237 sm->ssl_free(s);
0f113f3e
MC		 3238 s->method = meth;
3239 ret = s->method->ssl_new(s);
3240 }
3241
919ba009 3242 if (hf == sm->ssl_connect)
0f113f3e 3243 s->handshake_func = meth->ssl_connect;
919ba009 3244 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3245 s->handshake_func = meth->ssl_accept;
3246 }
26a7d938 3247 return ret;
0f113f3e
MC		 3248}
3249
3250int SSL_get_error(const SSL *s, int i)
3251{
3252 int reason;
3253 unsigned long l;
3254 BIO *bio;
3255
3256 if (i > 0)
26a7d938 3257 return SSL_ERROR_NONE;
0f113f3e
MC		 3258
3259 /*
3260 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3261 * where we do encode the error
3262 */
3263 if ((l = ERR_peek_error()) != 0) {
3264 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3265 return SSL_ERROR_SYSCALL;
0f113f3e 3266 else
26a7d938 3267 return SSL_ERROR_SSL;
0f113f3e
MC		 3268 }
3269
8051ab2b
MC		 3270 if (SSL_want_read(s)) {
3271 bio = SSL_get_rbio(s);
3272 if (BIO_should_read(bio))
26a7d938 3273 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3274 else if (BIO_should_write(bio))
3275 /*
3276 * This one doesn't make too much sense ... We never try to write
3277 * to the rbio, and an application program where rbio and wbio
3278 * are separate couldn't even know what it should wait for.
3279 * However if we ever set s->rwstate incorrectly (so that we have
3280 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3281 * wbio *are* the same, this test works around that bug; so it
3282 * might be safer to keep it.
3283 */
26a7d938 3284 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3285 else if (BIO_should_io_special(bio)) {
3286 reason = BIO_get_retry_reason(bio);
3287 if (reason == BIO_RR_CONNECT)
26a7d938 3288 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3289 else if (reason == BIO_RR_ACCEPT)
26a7d938 3290 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3291 else
26a7d938 3292 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3293 }
8051ab2b 3294 }
0f113f3e 3295
8051ab2b 3296 if (SSL_want_write(s)) {
69687aa8 3297 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3298 bio = s->wbio;
3299 if (BIO_should_write(bio))
26a7d938 3300 return SSL_ERROR_WANT_WRITE;
8051ab2b 3301 else if (BIO_should_read(bio))
2e7dc7cd 3302 /*
8051ab2b 3303 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3304 */
26a7d938 3305 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3306 else if (BIO_should_io_special(bio)) {
3307 reason = BIO_get_retry_reason(bio);
3308 if (reason == BIO_RR_CONNECT)
26a7d938 3309 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3310 else if (reason == BIO_RR_ACCEPT)
26a7d938 3311 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3312 else
26a7d938 3313 return SSL_ERROR_SYSCALL;
0f113f3e 3314 }
07bbc92c 3315 }
6b1bb98f 3316 if (SSL_want_x509_lookup(s))
26a7d938 3317 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3318 if (SSL_want_async(s))
8051ab2b 3319 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3320 if (SSL_want_async_job(s))
8051ab2b 3321 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3322 if (SSL_want_client_hello_cb(s))
3323 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3324
3325 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3326 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3327 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3328
26a7d938 3329 return SSL_ERROR_SYSCALL;
0f113f3e 3330}
d02b48c6 3331
add2f5ca
MC		 3332static int ssl_do_handshake_intern(void *vargs)
3333{
3334 struct ssl_async_args *args;
3335 SSL *s;
3336
3337 args = (struct ssl_async_args *)vargs;
3338 s = args->s;
3339
3340 return s->handshake_func(s);
3341}
3342
4f43d0e7 3343int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3344{
3345 int ret = 1;
3346
3347 if (s->handshake_func == NULL) {
3348 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3349 return -1;
0f113f3e
MC		 3350 }
3351
3eaa4170 3352 ossl_statem_check_finish_init(s, -1);
49e7fe12 3353
c7f47786 3354 s->method->ssl_renegotiate_check(s, 0);
0f113f3e 3355
190b9a03
PY		 3356 if (SSL_is_server(s)) {
3357 /* clear SNI settings at server-side */
3358 OPENSSL_free(s->ext.hostname);
3359 s->ext.hostname = NULL;
3360 }
3361
0f113f3e 3362 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3363 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3364 struct ssl_async_args args;
3365
3366 args.s = s;
3367
7fecbf6f 3368 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3369 } else {
3370 ret = s->handshake_func(s);
3371 }
0f113f3e 3372 }
add2f5ca 3373 return ret;
0f113f3e
MC		 3374}
3375
4f43d0e7 3376void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3377{
3378 s->server = 1;
3379 s->shutdown = 0;
fe3a3291 3380 ossl_statem_clear(s);
0f113f3e 3381 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3382 clear_ciphers(s);
0f113f3e 3383}
d02b48c6 3384
4f43d0e7 3385void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3386{
3387 s->server = 0;
3388 s->shutdown = 0;
fe3a3291 3389 ossl_statem_clear(s);
0f113f3e 3390 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3391 clear_ciphers(s);
0f113f3e 3392}
d02b48c6 3393
4f43d0e7 3394int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3395{
3396 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3397 return 0;
0f113f3e 3398}
d02b48c6 3399
41a15c4f 3400int ssl_undefined_void_function(void)
0f113f3e
MC		 3401{
3402 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3403 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3404 return 0;
0f113f3e 3405}
41a15c4f 3406
0821bcd4 3407int ssl_undefined_const_function(const SSL *s)
0f113f3e 3408{
26a7d938 3409 return 0;
0f113f3e 3410}
0821bcd4 3411
2b8fa1d5 3412const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3413{
3414 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3415 return NULL;
0f113f3e 3416}
d02b48c6 3417
3eb2aff4 3418const char *ssl_protocol_to_string(int version)
7d650072 3419{
2abacef1
MC		 3420 switch(version)
3421 {
3422 case TLS1_3_VERSION:
582a17d6 3423 return "TLSv1.3";
2abacef1
MC		 3424
3425 case TLS1_2_VERSION:
7d650072 3426 return "TLSv1.2";
2abacef1
MC		 3427
3428 case TLS1_1_VERSION:
7d650072 3429 return "TLSv1.1";
2abacef1
MC		 3430
3431 case TLS1_VERSION:
ee3a6c64 3432 return "TLSv1";
2abacef1
MC		 3433
3434 case SSL3_VERSION:
7d650072 3435 return "SSLv3";
2abacef1
MC		 3436
3437 case DTLS1_BAD_VER:
7d650072 3438 return "DTLSv0.9";
2abacef1
MC		 3439
3440 case DTLS1_VERSION:
7d650072 3441 return "DTLSv1";
2abacef1
MC		 3442
3443 case DTLS1_2_VERSION:
7d650072 3444 return "DTLSv1.2";
2abacef1
MC		 3445
3446 default:
3447 return "unknown";
3448 }
0f113f3e 3449}
d02b48c6 3450
7d650072
KR		 3451const char *SSL_get_version(const SSL *s)
3452{
3eb2aff4 3453 return ssl_protocol_to_string(s->version);
7d650072
KR		 3454}
3455
4f43d0e7 3456SSL *SSL_dup(SSL *s)
0f113f3e
MC		 3457{
3458 STACK_OF(X509_NAME) *sk;
3459 X509_NAME *xn;
3460 SSL *ret;
3461 int i;
3462
919ba009
VD		 3463 /* If we're not quiescent, just up_ref! */
3464 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3465 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3466 return s;
3467 }
3468
3469 /*
3470 * Otherwise, copy configuration state, and session if set.
3471 */
0f113f3e 3472 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3473 return NULL;
0f113f3e 3474
0f113f3e 3475 if (s->session != NULL) {
919ba009
VD		 3476 /*
3477 * Arranges to share the same session via up_ref. This "copies"
3478 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3479 */
61986d32 3480 if (!SSL_copy_session_id(ret, s))
17dd65e6 3481 goto err;
0f113f3e
MC		 3482 } else {
3483 /*
3484 * No session has been established yet, so we have to expect that
3485 * s->cert or ret->cert will be changed later -- they should not both
3486 * point to the same object, and thus we can't use
3487 * SSL_copy_session_id.
3488 */
919ba009
VD		 3489 if (!SSL_set_ssl_method(ret, s->method))
3490 goto err;
0f113f3e
MC		 3491
3492 if (s->cert != NULL) {
e0e920b1 3493 ssl_cert_free(ret->cert);
0f113f3e
MC		 3494 ret->cert = ssl_cert_dup(s->cert);
3495 if (ret->cert == NULL)
3496 goto err;
3497 }
3498
348240c6
MC		 3499 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3500 (int)s->sid_ctx_length))
69f68237 3501 goto err;
0f113f3e
MC		 3502 }
3503
9f6b22b8
VD		 3504 if (!ssl_dane_dup(ret, s))
3505 goto err;
919ba009 3506 ret->version = s->version;
0f113f3e
MC		 3507 ret->options = s->options;
3508 ret->mode = s->mode;
3509 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3510 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3511 ret->msg_callback = s->msg_callback;
3512 ret->msg_callback_arg = s->msg_callback_arg;
3513 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3514 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3515 ret->generate_session_id = s->generate_session_id;
3516
3517 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3518
0f113f3e
MC		 3519 /* copy app data, a little dangerous perhaps */
3520 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3521 goto err;
3522
3523 /* setup rbio, and wbio */
3524 if (s->rbio != NULL) {
3525 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3526 goto err;
3527 }
3528 if (s->wbio != NULL) {
3529 if (s->wbio != s->rbio) {
3530 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3531 goto err;
65e2d672
MC		 3532 } else {
3533 BIO_up_ref(ret->rbio);
0f113f3e 3534 ret->wbio = ret->rbio;
65e2d672 3535 }
0f113f3e 3536 }
919ba009 3537
0f113f3e 3538 ret->server = s->server;
919ba009
VD		 3539 if (s->handshake_func) {
3540 if (s->server)
3541 SSL_set_accept_state(ret);
3542 else
3543 SSL_set_connect_state(ret);
3544 }
0f113f3e 3545 ret->shutdown = s->shutdown;
0f113f3e
MC		 3546 ret->hit = s->hit;
3547
a974e64a
MC		 3548 ret->default_passwd_callback = s->default_passwd_callback;
3549 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3550
0f113f3e
MC		 3551 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3552
3553 /* dup the cipher_list and cipher_list_by_id stacks */
3554 if (s->cipher_list != NULL) {
3555 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3556 goto err;
3557 }
3558 if (s->cipher_list_by_id != NULL)
3559 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3560 == NULL)
3561 goto err;
3562
3563 /* Dup the client_CA list */
fa7c2637
DSH		 3564 if (s->ca_names != NULL) {
3565 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
0f113f3e 3566 goto err;
fa7c2637 3567 ret->ca_names = sk;
0f113f3e
MC		 3568 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3569 xn = sk_X509_NAME_value(sk, i);
3570 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3571 X509_NAME_free(xn);
3572 goto err;
3573 }
3574 }
3575 }
66696478 3576 return ret;
0f113f3e 3577
0f113f3e 3578 err:
66696478
RS		 3579 SSL_free(ret);
3580 return NULL;
0f113f3e 3581}
d02b48c6 3582
4f43d0e7 3583void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3584{
3585 if (s->enc_read_ctx != NULL) {
846ec07d 3586 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3587 s->enc_read_ctx = NULL;
3588 }
3589 if (s->enc_write_ctx != NULL) {
846ec07d 3590 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3591 s->enc_write_ctx = NULL;
3592 }
09b6c2ef 3593#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3594 COMP_CTX_free(s->expand);
3595 s->expand = NULL;
3596 COMP_CTX_free(s->compress);
3597 s->compress = NULL;
0f113f3e
MC		 3598#endif
3599}
d02b48c6 3600
0821bcd4 3601X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3602{
3603 if (s->cert != NULL)
26a7d938 3604 return s->cert->key->x509;
0f113f3e 3605 else
26a7d938 3606 return NULL;
0f113f3e 3607}
d02b48c6 3608
a25f9adc 3609EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3610{
3611 if (s->cert != NULL)
26a7d938 3612 return s->cert->key->privatekey;
0f113f3e 3613 else
26a7d938 3614 return NULL;
0f113f3e 3615}
d02b48c6 3616
a25f9adc 3617X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 3618{
3619 if (ctx->cert != NULL)
3620 return ctx->cert->key->x509;
3621 else
3622 return NULL;
3623}
a25f9adc
DSH		 3624
3625EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 3626{
3627 if (ctx->cert != NULL)
3628 return ctx->cert->key->privatekey;
3629 else
3630 return NULL;
3631}
a25f9adc 3632
babb3798 3633const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 3634{
3635 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 3636 return s->session->cipher;
3637 return NULL;
0f113f3e
MC		 3638}
3639
0aed6e44
BK		 3640const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3641{
3642 return s->s3->tmp.new_cipher;
3643}
3644
377dcdba 3645const COMP_METHOD *SSL_get_current_compression(SSL *s)
0f113f3e 3646{
9a555706
RS		 3647#ifndef OPENSSL_NO_COMP
3648 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3649#else
3650 return NULL;
3651#endif
0f113f3e 3652}
377dcdba
RL		 3653
3654const COMP_METHOD *SSL_get_current_expansion(SSL *s)
0f113f3e 3655{
9a555706
RS		 3656#ifndef OPENSSL_NO_COMP
3657 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3658#else
3659 return NULL;
0f113f3e 3660#endif
9a555706 3661}
0f113f3e 3662
46417569 3663int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 3664{
3665 BIO *bbio;
3666
2e7dc7cd
MC		 3667 if (s->bbio != NULL) {
3668 /* Already buffered. */
3669 return 1;
0f113f3e 3670 }
46417569 3671
2e7dc7cd
MC		 3672 bbio = BIO_new(BIO_f_buffer());
3673 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3674 BIO_free(bbio);
0f113f3e 3675 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 3676 return 0;
0f113f3e 3677 }
2e7dc7cd
MC		 3678 s->bbio = bbio;
3679 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 3680
3681 return 1;
0f113f3e 3682}
413c4f45 3683
b77f3ed1 3684int ssl_free_wbio_buffer(SSL *s)
0f113f3e 3685{
62adbcee 3686 /* callers ensure s is never null */
0f113f3e 3687 if (s->bbio == NULL)
b77f3ed1 3688 return 1;
0f113f3e 3689
2e7dc7cd 3690 s->wbio = BIO_pop(s->wbio);
b77f3ed1
MC		 3691 if (!ossl_assert(s->wbio != NULL))
3692 return 0;
0f113f3e
MC		 3693 BIO_free(s->bbio);
3694 s->bbio = NULL;
b77f3ed1
MC		 3695
3696 return 1;
0f113f3e
MC		 3697}
3698
3699void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3700{
3701 ctx->quiet_shutdown = mode;
3702}
58964a49 3703
0821bcd4 3704int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 3705{
26a7d938 3706 return ctx->quiet_shutdown;
0f113f3e 3707}
58964a49 3708
0f113f3e
MC		 3709void SSL_set_quiet_shutdown(SSL *s, int mode)
3710{
3711 s->quiet_shutdown = mode;
3712}
58964a49 3713
0821bcd4 3714int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 3715{
26a7d938 3716 return s->quiet_shutdown;
0f113f3e 3717}
58964a49 3718
0f113f3e
MC		 3719void SSL_set_shutdown(SSL *s, int mode)
3720{
3721 s->shutdown = mode;
3722}
58964a49 3723
0821bcd4 3724int SSL_get_shutdown(const SSL *s)
0f113f3e 3725{
6546e9b2 3726 return s->shutdown;
0f113f3e 3727}
58964a49 3728
0821bcd4 3729int SSL_version(const SSL *s)
0f113f3e 3730{
6546e9b2
AG		 3731 return s->version;
3732}
3733
3734int SSL_client_version(const SSL *s)
3735{
3736 return s->client_version;
0f113f3e 3737}
58964a49 3738
0821bcd4 3739SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 3740{
6546e9b2 3741 return ssl->ctx;
0f113f3e
MC		 3742}
3743
3744SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3745{
24a0d393 3746 CERT *new_cert;
0f113f3e
MC		 3747 if (ssl->ctx == ctx)
3748 return ssl->ctx;
0f113f3e 3749 if (ctx == NULL)
222da979 3750 ctx = ssl->session_ctx;
24a0d393
KR		 3751 new_cert = ssl_cert_dup(ctx->cert);
3752 if (new_cert == NULL) {
3753 return NULL;
0f113f3e 3754 }
21181889
MC		 3755
3756 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3757 ssl_cert_free(new_cert);
3758 return NULL;
3759 }
3760
24a0d393
KR		 3761 ssl_cert_free(ssl->cert);
3762 ssl->cert = new_cert;
0f113f3e
MC		 3763
3764 /*
3765 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3766 * so setter APIs must prevent invalid lengths from entering the system.
3767 */
380a522f
MC		 3768 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3769 return NULL;
0f113f3e
MC		 3770
3771 /*
3772 * If the session ID context matches that of the parent SSL_CTX,
3773 * inherit it from the new SSL_CTX as well. If however the context does
3774 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3775 * leave it unchanged.
3776 */
3777 if ((ssl->ctx != NULL) &&
3778 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3779 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3780 ssl->sid_ctx_length = ctx->sid_ctx_length;
3781 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3782 }
3783
16203f7b 3784 SSL_CTX_up_ref(ctx);
a230b26e 3785 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 3786 ssl->ctx = ctx;
3787
16203f7b 3788 return ssl->ctx;
0f113f3e 3789}
ed3883d2 3790
4f43d0e7 3791int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 3792{
26a7d938 3793 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 3794}
58964a49 3795
d84a7b20
MC		 3796int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3797{
3798 X509_LOOKUP *lookup;
3799
3800 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3801 if (lookup == NULL)
3802 return 0;
3803 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3804
3805 /* Clear any errors if the default directory does not exist */
3806 ERR_clear_error();
3807
3808 return 1;
3809}
3810
3811int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3812{
3813 X509_LOOKUP *lookup;
3814
3815 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3816 if (lookup == NULL)
3817 return 0;
3818
3819 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3820
3821 /* Clear any errors if the default file does not exist */
3822 ERR_clear_error();
3823
3824 return 1;
3825}
3826
303c0028 3827int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 3828 const char *CApath)
3829{
26a7d938 3830 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
0f113f3e 3831}
58964a49 3832
45d87a1f 3833void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 3834 void (*cb) (const SSL *ssl, int type, int val))
3835{
3836 ssl->info_callback = cb;
3837}
3838
3839/*
3840 * One compiler (Diab DCC) doesn't like argument names in returned function
3841 * pointer.
3842 */
3843void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3844 int /* type */ ,
3845 int /* val */ ) {
3846 return ssl->info_callback;
3847}
58964a49 3848
0f113f3e
MC		 3849void SSL_set_verify_result(SSL *ssl, long arg)
3850{
3851 ssl->verify_result = arg;
3852}
58964a49 3853
0821bcd4 3854long SSL_get_verify_result(const SSL *ssl)
0f113f3e 3855{
26a7d938 3856 return ssl->verify_result;
0f113f3e
MC		 3857}
3858
d9f1c639 3859size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3860{
6b8f5d0d 3861 if (outlen == 0)
858618e7
NM		 3862 return sizeof(ssl->s3->client_random);
3863 if (outlen > sizeof(ssl->s3->client_random))
3864 outlen = sizeof(ssl->s3->client_random);
3865 memcpy(out, ssl->s3->client_random, outlen);
d9f1c639 3866 return outlen;
858618e7
NM		 3867}
3868
d9f1c639 3869size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3870{
6b8f5d0d 3871 if (outlen == 0)
858618e7
NM		 3872 return sizeof(ssl->s3->server_random);
3873 if (outlen > sizeof(ssl->s3->server_random))
3874 outlen = sizeof(ssl->s3->server_random);
3875 memcpy(out, ssl->s3->server_random, outlen);
d9f1c639 3876 return outlen;
858618e7
NM		 3877}
3878
d9f1c639 3879size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 3880 unsigned char *out, size_t outlen)
858618e7 3881{
d9f1c639
MC		 3882 if (outlen == 0)
3883 return session->master_key_length;
8c1a5343 3884 if (outlen > session->master_key_length)
858618e7
NM		 3885 outlen = session->master_key_length;
3886 memcpy(out, session->master_key, outlen);
d9f1c639 3887 return outlen;
858618e7
NM		 3888}
3889
725b0f1e 3890int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 3891 size_t len)
3892{
3893 if (len > sizeof(sess->master_key))
3894 return 0;
3895
3896 memcpy(sess->master_key, in, len);
3897 sess->master_key_length = len;
911d63f2
MC		 3898 return 1;
3899}
3900
3901
0f113f3e
MC		 3902int SSL_set_ex_data(SSL *s, int idx, void *arg)
3903{
26a7d938 3904 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 3905}
3906
3907void *SSL_get_ex_data(const SSL *s, int idx)
3908{
26a7d938 3909 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 3910}
3911
0f113f3e
MC		 3912int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3913{
26a7d938 3914 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 3915}
3916
3917void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3918{
26a7d938 3919 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 3920}
58964a49 3921
0821bcd4 3922X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 3923{
26a7d938 3924 return ctx->cert_store;
0f113f3e 3925}
413c4f45 3926
0f113f3e
MC		 3927void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3928{
222561fe 3929 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 3930 ctx->cert_store = store;
3931}
413c4f45 3932
b50052db
TS		 3933void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3934{
3935 if (store != NULL)
3936 X509_STORE_up_ref(store);
3937 SSL_CTX_set_cert_store(ctx, store);
3938}
3939
0821bcd4 3940int SSL_want(const SSL *s)
0f113f3e 3941{
26a7d938 3942 return s->rwstate;
0f113f3e 3943}
413c4f45 3944
0f113f3e 3945/**
4f43d0e7
BL		 3946 * \brief Set the callback for generating temporary DH keys.
3947 * \param ctx the SSL context.
3948 * \param dh the callback
3949 */
3950
bc36ee62 3951#ifndef OPENSSL_NO_DH
0f113f3e
MC		 3952void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3953 DH *(*dh) (SSL *ssl, int is_export,
3954 int keylength))
3955{
3956 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3957}
f8c3c05d 3958
0f113f3e
MC		 3959void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3960 int keylength))
3961{
3962 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3963}
79df9d62 3964#endif
15d21c2d 3965
ddac1974
NL		 3966#ifndef OPENSSL_NO_PSK
3967int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 3968{
3969 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 3970 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 3971 return 0;
3972 }
df6da24b 3973 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 3974 if (identity_hint != NULL) {
7644a9ae 3975 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 3976 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 3977 return 0;
3978 } else
df6da24b 3979 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 3980 return 1;
3981}
ddac1974
NL		 3982
3983int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 3984{
3985 if (s == NULL)
3986 return 0;
3987
0f113f3e
MC		 3988 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
3989 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
3990 return 0;
3991 }
df6da24b 3992 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 3993 if (identity_hint != NULL) {
7644a9ae 3994 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 3995 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 3996 return 0;
3997 } else
df6da24b 3998 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 3999 return 1;
4000}
ddac1974
NL		 4001
4002const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4003{
4004 if (s == NULL || s->session == NULL)
4005 return NULL;
26a7d938 4006 return s->session->psk_identity_hint;
0f113f3e 4007}
ddac1974
NL		 4008
4009const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4010{
4011 if (s == NULL || s->session == NULL)
4012 return NULL;
26a7d938 4013 return s->session->psk_identity;
0f113f3e 4014}
7806f3dd 4015
8cbfcc70 4016void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4017{
4018 s->psk_client_callback = cb;
4019}
7806f3dd 4020
8cbfcc70 4021void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4022{
4023 ctx->psk_client_callback = cb;
4024}
7806f3dd 4025
8cbfcc70 4026void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4027{
4028 s->psk_server_callback = cb;
4029}
7806f3dd 4030
8cbfcc70 4031void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4032{
4033 ctx->psk_server_callback = cb;
4034}
4035#endif
4036
f46184bd
MC		 4037void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4038{
4039 s->psk_find_session_cb = cb;
4040}
4041
4042void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4043 SSL_psk_find_session_cb_func cb)
4044{
4045 ctx->psk_find_session_cb = cb;
4046}
4047
4048void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4049{
4050 s->psk_use_session_cb = cb;
4051}
4052
4053void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4054 SSL_psk_use_session_cb_func cb)
4055{
4056 ctx->psk_use_session_cb = cb;
4057}
4058
0f113f3e
MC		 4059void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4060 void (*cb) (int write_p, int version,
4061 int content_type, const void *buf,
4062 size_t len, SSL *ssl, void *arg))
4063{
4064 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4065}
4066
4067void SSL_set_msg_callback(SSL *ssl,
4068 void (*cb) (int write_p, int version,
4069 int content_type, const void *buf,
4070 size_t len, SSL *ssl, void *arg))
4071{
4072 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4073}
a661b653 4074
7c2d4fee 4075void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4076 int (*cb) (SSL *ssl,
4077 int
4078 is_forward_secure))
4079{
4080 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4081 (void (*)(void))cb);
4082}
4083
7c2d4fee 4084void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4085 int (*cb) (SSL *ssl,
4086 int is_forward_secure))
4087{
4088 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4089 (void (*)(void))cb);
4090}
4091
c649d10d
TS		 4092void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4093 size_t (*cb) (SSL *ssl, int type,
4094 size_t len, void *arg))
4095{
4096 ctx->record_padding_cb = cb;
4097}
4098
4099void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4100{
4101 ctx->record_padding_arg = arg;
4102}
4103
4104void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4105{
4106 return ctx->record_padding_arg;
4107}
4108
4109int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4110{
4111 /* block size of 0 or 1 is basically no padding */
4112 if (block_size == 1)
4113 ctx->block_padding = 0;
4114 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4115 ctx->block_padding = block_size;
4116 else
4117 return 0;
4118 return 1;
4119}
4120
4121void SSL_set_record_padding_callback(SSL *ssl,
4122 size_t (*cb) (SSL *ssl, int type,
4123 size_t len, void *arg))
4124{
4125 ssl->record_padding_cb = cb;
4126}
4127
4128void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4129{
4130 ssl->record_padding_arg = arg;
4131}
4132
4133void *SSL_get_record_padding_callback_arg(SSL *ssl)
4134{
4135 return ssl->record_padding_arg;
4136}
4137
4138int SSL_set_block_padding(SSL *ssl, size_t block_size)
4139{
4140 /* block size of 0 or 1 is basically no padding */
4141 if (block_size == 1)
4142 ssl->block_padding = 0;
4143 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4144 ssl->block_padding = block_size;
4145 else
4146 return 0;
4147 return 1;
4148}
4149
0f113f3e
MC		 4150/*
4151 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4152 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4153 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4154 * Returns the newly allocated ctx;
8671b898 4155 */
b948e2c5 4156
0f113f3e 4157EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4158{
0f113f3e 4159 ssl_clear_hash_ctx(hash);
bfb0641f 4160 *hash = EVP_MD_CTX_new();
5f3d93e4 4161 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4162 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4163 *hash = NULL;
4164 return NULL;
4165 }
0f113f3e 4166 return *hash;
b948e2c5 4167}
0f113f3e
MC		 4168
4169void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4170{
4171
0d9824c1 4172 EVP_MD_CTX_free(*hash);
0f113f3e 4173 *hash = NULL;
b948e2c5 4174}
a661b653 4175
48fbcbac 4176/* Retrieve handshake hashes */
8c1a5343
MC		 4177int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4178 size_t *hashlen)
48fbcbac 4179{
6e59a892 4180 EVP_MD_CTX *ctx = NULL;
28ba2541 4181 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
8c1a5343
MC		 4182 int hashleni = EVP_MD_CTX_size(hdgst);
4183 int ret = 0;
4184
4185 if (hashleni < 0 || (size_t)hashleni > outlen)
28ba2541 4186 goto err;
8c1a5343 4187
bfb0641f 4188 ctx = EVP_MD_CTX_new();
8c1a5343 4189 if (ctx == NULL)
6e59a892 4190 goto err;
8c1a5343 4191
6e59a892
RL		 4192 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4193 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
8c1a5343
MC		 4194 goto err;
4195
4196 *hashlen = hashleni;
4197
4198 ret = 1;
48fbcbac 4199 err:
bfb0641f 4200 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4201 return ret;
4202}
4203
b577fd0b 4204int SSL_session_reused(SSL *s)
0f113f3e
MC		 4205{
4206 return s->hit;
4207}
08557cf2 4208
69443116 4209int SSL_is_server(const SSL *s)
0f113f3e
MC		 4210{
4211 return s->server;
4212}
87adf1fa 4213
47153c72
RS		 4214#if OPENSSL_API_COMPAT < 0x10100000L
4215void SSL_set_debug(SSL *s, int debug)
4216{
4217 /* Old function was do-nothing anyway... */
4218 (void)s;
4219 (void)debug;
4220}
4221#endif
4222
b362ccab 4223void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4224{
4225 s->cert->sec_level = level;
4226}
b362ccab
DSH		 4227
4228int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4229{
4230 return s->cert->sec_level;
4231}
b362ccab 4232
0f113f3e 4233void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4234 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4235 int op, int bits, int nid,
4236 void *other, void *ex))
0f113f3e
MC		 4237{
4238 s->cert->sec_cb = cb;
4239}
b362ccab 4240
a230b26e
EK		 4241int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4242 const SSL_CTX *ctx, int op,
4243 int bits, int nid, void *other,
4244 void *ex) {
0f113f3e
MC		 4245 return s->cert->sec_cb;
4246}
b362ccab
DSH		 4247
4248void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4249{
4250 s->cert->sec_ex = ex;
4251}
b362ccab
DSH		 4252
4253void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4254{
4255 return s->cert->sec_ex;
4256}
b362ccab
DSH		 4257
4258void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4259{
4260 ctx->cert->sec_level = level;
4261}
b362ccab
DSH		 4262
4263int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4264{
4265 return ctx->cert->sec_level;
4266}
b362ccab 4267
0f113f3e 4268void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4269 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4270 int op, int bits, int nid,
4271 void *other, void *ex))
0f113f3e
MC		 4272{
4273 ctx->cert->sec_cb = cb;
4274}
b362ccab 4275
e4646a89
KR		 4276int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4277 const SSL_CTX *ctx,
0f113f3e
MC		 4278 int op, int bits,
4279 int nid,
4280 void *other,
4281 void *ex) {
4282 return ctx->cert->sec_cb;
4283}
b362ccab
DSH		 4284
4285void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4286{
4287 ctx->cert->sec_ex = ex;
4288}
b362ccab
DSH		 4289
4290void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4291{
4292 return ctx->cert->sec_ex;
4293}
b362ccab 4294
8106cb8b
VD		 4295/*
4296 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4297 * can return unsigned long, instead of the generic long return value from the
4298 * control interface.
4299 */
4300unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4301{
4302 return ctx->options;
4303}
a230b26e
EK		 4304
4305unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4306{
4307 return s->options;
4308}
a230b26e 4309
8106cb8b
VD		 4310unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4311{
4312 return ctx->options |= op;
4313}
a230b26e 4314
8106cb8b
VD		 4315unsigned long SSL_set_options(SSL *s, unsigned long op)
4316{
4317 return s->options |= op;
4318}
a230b26e 4319
8106cb8b
VD		 4320unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4321{
4322 return ctx->options &= ~op;
4323}
a230b26e 4324
8106cb8b
VD		 4325unsigned long SSL_clear_options(SSL *s, unsigned long op)
4326{
4327 return s->options &= ~op;
4328}
4329
696178ed
DSH		 4330STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4331{
4332 return s->verified_chain;
4333}
4334
0f113f3e 4335IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4336
4337#ifndef OPENSSL_NO_CT
4338
4339/*
4340 * Moves SCTs from the |src| stack to the |dst| stack.
4341 * The source of each SCT will be set to |origin|.
4342 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4343 * the caller.
4344 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4345 */
a230b26e
EK		 4346static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4347 sct_source_t origin)
ed29e82a
RP		 4348{
4349 int scts_moved = 0;
4350 SCT *sct = NULL;
4351
4352 if (*dst == NULL) {
4353 *dst = sk_SCT_new_null();
4354 if (*dst == NULL) {
4355 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4356 goto err;
4357 }
4358 }
4359
4360 while ((sct = sk_SCT_pop(src)) != NULL) {
4361 if (SCT_set_source(sct, origin) != 1)
4362 goto err;
4363
4364 if (sk_SCT_push(*dst, sct) <= 0)
4365 goto err;
4366 scts_moved += 1;
4367 }
4368
4369 return scts_moved;
a230b26e 4370 err:
ed29e82a 4371 if (sct != NULL)
a230b26e 4372 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4373 return -1;
ed29e82a
RP		 4374}
4375
4376/*
a230b26e 4377 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4378 * Returns the number of SCTs extracted.
a230b26e 4379 */
ed29e82a
RP		 4380static int ct_extract_tls_extension_scts(SSL *s)
4381{
4382 int scts_extracted = 0;
4383
aff8c126
RS		 4384 if (s->ext.scts != NULL) {
4385 const unsigned char *p = s->ext.scts;
4386 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4387
4388 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4389
4390 SCT_LIST_free(scts);
4391 }
4392
4393 return scts_extracted;
4394}
4395
4396/*
4397 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4398 * contains an SCT X509 extension. They will be stored in |s->scts|.
4399 * Returns:
4400 * - The number of SCTs extracted, assuming an OCSP response exists.
4401 * - 0 if no OCSP response exists or it contains no SCTs.
4402 * - A negative integer if an error occurs.
4403 */
4404static int ct_extract_ocsp_response_scts(SSL *s)
4405{
a230b26e 4406# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4407 int scts_extracted = 0;
4408 const unsigned char *p;
4409 OCSP_BASICRESP *br = NULL;
4410 OCSP_RESPONSE *rsp = NULL;
4411 STACK_OF(SCT) *scts = NULL;
4412 int i;
4413
aff8c126 4414 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4415 goto err;
4416
aff8c126
RS		 4417 p = s->ext.ocsp.resp;
4418 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4419 if (rsp == NULL)
4420 goto err;
4421
4422 br = OCSP_response_get1_basic(rsp);
4423 if (br == NULL)
4424 goto err;
4425
4426 for (i = 0; i < OCSP_resp_count(br); ++i) {
4427 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4428
4429 if (single == NULL)
4430 continue;
4431
a230b26e
EK		 4432 scts =
4433 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4434 scts_extracted =
4435 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4436 if (scts_extracted < 0)
4437 goto err;
4438 }
a230b26e 4439 err:
ed29e82a
RP		 4440 SCT_LIST_free(scts);
4441 OCSP_BASICRESP_free(br);
4442 OCSP_RESPONSE_free(rsp);
4443 return scts_extracted;
a230b26e 4444# else
3e41ac35
MC		 4445 /* Behave as if no OCSP response exists */
4446 return 0;
a230b26e 4447# endif
ed29e82a
RP		 4448}
4449
4450/*
4451 * Attempts to extract SCTs from the peer certificate.
4452 * Return the number of SCTs extracted, or a negative integer if an error
4453 * occurs.
4454 */
4455static int ct_extract_x509v3_extension_scts(SSL *s)
4456{
4457 int scts_extracted = 0;
3f3c7d26 4458 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4459
4460 if (cert != NULL) {
4461 STACK_OF(SCT) *scts =
4462 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4463
4464 scts_extracted =
4465 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4466
4467 SCT_LIST_free(scts);
4468 }
4469
4470 return scts_extracted;
4471}
4472
4473/*
4474 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4475 * response (if it exists) and X509v3 extensions in the certificate.
4476 * Returns NULL if an error occurs.
4477 */
4478const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4479{
4480 if (!s->scts_parsed) {
4481 if (ct_extract_tls_extension_scts(s) < 0 ||
4482 ct_extract_ocsp_response_scts(s) < 0 ||
4483 ct_extract_x509v3_extension_scts(s) < 0)
4484 goto err;
4485
4486 s->scts_parsed = 1;
4487 }
4488 return s->scts;
a230b26e 4489 err:
ed29e82a
RP		 4490 return NULL;
4491}
4492
a230b26e 4493static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4494 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4495{
43341433
VD		 4496 return 1;
4497}
4498
a230b26e 4499static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4500 const STACK_OF(SCT) *scts, void *unused_arg)
4501{
4502 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4503 int i;
ed29e82a 4504
43341433
VD		 4505 for (i = 0; i < count; ++i) {
4506 SCT *sct = sk_SCT_value(scts, i);
4507 int status = SCT_get_validation_status(sct);
4508
4509 if (status == SCT_VALIDATION_STATUS_VALID)
4510 return 1;
4511 }
4512 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4513 return 0;
4514}
4515
4516int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4517 void *arg)
4518{
ed29e82a
RP		 4519 /*
4520 * Since code exists that uses the custom extension handler for CT, look
4521 * for this and throw an error if they have already registered to use CT.
4522 */
4523 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4524 TLSEXT_TYPE_signed_certificate_timestamp))
4525 {
ed29e82a
RP		 4526 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4527 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4528 return 0;
ed29e82a
RP		 4529 }
4530
ed29e82a 4531 if (callback != NULL) {
a230b26e
EK		 4532 /*
4533 * If we are validating CT, then we MUST accept SCTs served via OCSP
4534 */
ed29e82a 4535 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4536 return 0;
ed29e82a
RP		 4537 }
4538
43341433
VD		 4539 s->ct_validation_callback = callback;
4540 s->ct_validation_callback_arg = arg;
4541
4542 return 1;
ed29e82a
RP		 4543}
4544
43341433 4545int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 4546 ssl_ct_validation_cb callback, void *arg)
ed29e82a 4547{
ed29e82a
RP		 4548 /*
4549 * Since code exists that uses the custom extension handler for CT, look for
4550 * this and throw an error if they have already registered to use CT.
4551 */
4552 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 4553 TLSEXT_TYPE_signed_certificate_timestamp))
4554 {
ed29e82a
RP		 4555 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4556 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4557 return 0;
ed29e82a
RP		 4558 }
4559
4560 ctx->ct_validation_callback = callback;
4561 ctx->ct_validation_callback_arg = arg;
43341433 4562 return 1;
ed29e82a
RP		 4563}
4564
43341433 4565int SSL_ct_is_enabled(const SSL *s)
ed29e82a 4566{
43341433 4567 return s->ct_validation_callback != NULL;
ed29e82a
RP		 4568}
4569
43341433 4570int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 4571{
43341433 4572 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 4573}
4574
4d482ee2 4575int ssl_validate_ct(SSL *s)
ed29e82a
RP		 4576{
4577 int ret = 0;
3f3c7d26 4578 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 4579 X509 *issuer;
b9aec69a 4580 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 4581 CT_POLICY_EVAL_CTX *ctx = NULL;
4582 const STACK_OF(SCT) *scts;
4583
43341433
VD		 4584 /*
4585 * If no callback is set, the peer is anonymous, or its chain is invalid,
4586 * skip SCT validation - just return success. Applications that continue
4587 * handshakes without certificates, with unverified chains, or pinned leaf
4588 * certificates are outside the scope of the WebPKI and CT.
4589 *
4590 * The above exclusions notwithstanding the vast majority of peers will
4591 * have rather ordinary certificate chains validated by typical
4592 * applications that perform certificate verification and therefore will
4593 * process SCTs when enabled.
4594 */
4595 if (s->ct_validation_callback == NULL || cert == NULL ||
4596 s->verify_result != X509_V_OK ||
a230b26e 4597 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 4598 return 1;
4599
43341433
VD		 4600 /*
4601 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4602 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4603 */
4604 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4605 switch (dane->mtlsa->usage) {
4606 case DANETLS_USAGE_DANE_TA:
4607 case DANETLS_USAGE_DANE_EE:
4608 return 1;
4609 }
ed29e82a
RP		 4610 }
4611
ed29e82a
RP		 4612 ctx = CT_POLICY_EVAL_CTX_new();
4613 if (ctx == NULL) {
4614 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4615 goto end;
4616 }
4617
43341433 4618 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 4619 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4620 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4621 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 4622 CT_POLICY_EVAL_CTX_set_time(
4623 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 4624
4625 scts = SSL_get0_peer_scts(s);
4626
43341433
VD		 4627 /*
4628 * This function returns success (> 0) only when all the SCTs are valid, 0
4629 * when some are invalid, and < 0 on various internal errors (out of
4630 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4631 * reason to abort the handshake, that decision is up to the callback.
4632 * Therefore, we error out only in the unexpected case that the return
4633 * value is negative.
4634 *
4635 * XXX: One might well argue that the return value of this function is an
f430ba31 4636 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 4637 * status of each of the provided SCTs. So long as it correctly separates
4638 * the wheat from the chaff it should return success. Failure in this case
4639 * ought to correspond to an inability to carry out its duties.
4640 */
4641 if (SCT_LIST_validate(scts, ctx) < 0) {
ed29e82a
RP		 4642 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4643 goto end;
4644 }
4645
4646 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4647 if (ret < 0)
a230b26e 4648 ret = 0; /* This function returns 0 on failure */
ed29e82a 4649
a230b26e 4650 end:
ed29e82a 4651 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 4652 /*
4653 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4654 * failure return code here. Also the application may wish the complete
4655 * the handshake, and then disconnect cleanly at a higher layer, after
4656 * checking the verification status of the completed connection.
4657 *
4658 * We therefore force a certificate verification failure which will be
4659 * visible via SSL_get_verify_result() and cached as part of any resumed
4660 * session.
4661 *
4662 * Note: the permissive callback is for information gathering only, always
4663 * returns success, and does not affect verification status. Only the
4664 * strict callback or a custom application-specified callback can trigger
4665 * connection failure or record a verification error.
4666 */
4667 if (ret <= 0)
4668 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 4669 return ret;
4670}
4671
43341433
VD		 4672int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4673{
4674 switch (validation_mode) {
4675 default:
4676 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4677 return 0;
4678 case SSL_CT_VALIDATION_PERMISSIVE:
4679 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4680 case SSL_CT_VALIDATION_STRICT:
4681 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4682 }
4683}
4684
4685int SSL_enable_ct(SSL *s, int validation_mode)
4686{
4687 switch (validation_mode) {
4688 default:
4689 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4690 return 0;
4691 case SSL_CT_VALIDATION_PERMISSIVE:
4692 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4693 case SSL_CT_VALIDATION_STRICT:
4694 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4695 }
4696}
4697
ed29e82a
RP		 4698int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4699{
328f36c5 4700 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 4701}
4702
4703int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4704{
4705 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4706}
4707
a230b26e 4708void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 4709{
4710 CTLOG_STORE_free(ctx->ctlog_store);
4711 ctx->ctlog_store = logs;
4712}
4713
4714const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4715{
4716 return ctx->ctlog_store;
4717}
4718
6b1bb98f
BK		 4719#endif /* OPENSSL_NO_CT */
4720
a9c0d8be
DB		 4721void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4722 void *arg)
6b1bb98f 4723{
a9c0d8be
DB		 4724 c->client_hello_cb = cb;
4725 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 4726}
4727
a9c0d8be 4728int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 4729{
4730 if (s->clienthello == NULL)
4731 return 0;
4732 return s->clienthello->isv2;
4733}
4734
a9c0d8be 4735unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 4736{
4737 if (s->clienthello == NULL)
4738 return 0;
4739 return s->clienthello->legacy_version;
4740}
4741
a9c0d8be 4742size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4743{
4744 if (s->clienthello == NULL)
4745 return 0;
4746 if (out != NULL)
4747 *out = s->clienthello->random;
4748 return SSL3_RANDOM_SIZE;
4749}
4750
a9c0d8be 4751size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4752{
4753 if (s->clienthello == NULL)
4754 return 0;
4755 if (out != NULL)
4756 *out = s->clienthello->session_id;
4757 return s->clienthello->session_id_len;
4758}
4759
a9c0d8be 4760size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4761{
4762 if (s->clienthello == NULL)
4763 return 0;
4764 if (out != NULL)
4765 *out = PACKET_data(&s->clienthello->ciphersuites);
4766 return PACKET_remaining(&s->clienthello->ciphersuites);
4767}
4768
a9c0d8be 4769size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4770{
4771 if (s->clienthello == NULL)
4772 return 0;
4773 if (out != NULL)
4774 *out = s->clienthello->compressions;
4775 return s->clienthello->compressions_len;
4776}
4777
a9c0d8be 4778int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 4779{
4780 RAW_EXTENSION *ext;
4781 int *present;
4782 size_t num = 0, i;
4783
4784 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4785 return 0;
4786 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4787 ext = s->clienthello->pre_proc_exts + i;
4788 if (ext->present)
4789 num++;
4790 }
4791 present = OPENSSL_malloc(sizeof(*present) * num);
4792 if (present == NULL)
4793 return 0;
4794 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4795 ext = s->clienthello->pre_proc_exts + i;
4796 if (ext->present) {
4797 if (ext->received_order >= num)
4798 goto err;
4799 present[ext->received_order] = ext->type;
4800 }
4801 }
4802 *out = present;
4803 *outlen = num;
4804 return 1;
4805 err:
4806 OPENSSL_free(present);
4807 return 0;
4808}
4809
a9c0d8be 4810int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 4811 size_t *outlen)
4812{
4813 size_t i;
4814 RAW_EXTENSION *r;
4815
4816 if (s->clienthello == NULL)
4817 return 0;
4818 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4819 r = s->clienthello->pre_proc_exts + i;
4820 if (r->present && r->type == type) {
4821 if (out != NULL)
4822 *out = PACKET_data(&r->data);
4823 if (outlen != NULL)
4824 *outlen = PACKET_remaining(&r->data);
4825 return 1;
4826 }
4827 }
4828 return 0;
4829}
2faa1b48 4830
a58eb06d
TS		 4831int SSL_free_buffers(SSL *ssl)
4832{
4833 RECORD_LAYER *rl = &ssl->rlayer;
4834
4835 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4836 return 0;
4837
4838 RECORD_LAYER_release(rl);
4839 return 1;
4840}
4841
4842int SSL_alloc_buffers(SSL *ssl)
4843{
4844 return ssl3_setup_buffers(ssl);
4845}
4846
2faa1b48
CB		 4847void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4848{
4849 ctx->keylog_callback = cb;
4850}
4851
4852SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4853{
4854 return ctx->keylog_callback;
4855}
4856
4857static int nss_keylog_int(const char *prefix,
4858 SSL *ssl,
4859 const uint8_t *parameter_1,
4860 size_t parameter_1_len,
4861 const uint8_t *parameter_2,
4862 size_t parameter_2_len)
4863{
4864 char *out = NULL;
4865 char *cursor = NULL;
4866 size_t out_len = 0;
4867 size_t i;
4868 size_t prefix_len;
4869
4870 if (ssl->ctx->keylog_callback == NULL) return 1;
4871
4872 /*
4873 * Our output buffer will contain the following strings, rendered with
4874 * space characters in between, terminated by a NULL character: first the
4875 * prefix, then the first parameter, then the second parameter. The
4876 * meaning of each parameter depends on the specific key material being
4877 * logged. Note that the first and second parameters are encoded in
4878 * hexadecimal, so we need a buffer that is twice their lengths.
4879 */
4880 prefix_len = strlen(prefix);
4881 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4882 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4883 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4884 return 0;
4885 }
4886
4887 strcpy(cursor, prefix);
4888 cursor += prefix_len;
4889 *cursor++ = ' ';
4890
4891 for (i = 0; i < parameter_1_len; i++) {
4892 sprintf(cursor, "%02x", parameter_1[i]);
4893 cursor += 2;
4894 }
4895 *cursor++ = ' ';
4896
4897 for (i = 0; i < parameter_2_len; i++) {
4898 sprintf(cursor, "%02x", parameter_2[i]);
4899 cursor += 2;
4900 }
4901 *cursor = '\0';
4902
4903 ssl->ctx->keylog_callback(ssl, (const char *)out);
4904 OPENSSL_free(out);
4905 return 1;
4906
4907}
4908
4909int ssl_log_rsa_client_key_exchange(SSL *ssl,
4910 const uint8_t *encrypted_premaster,
4911 size_t encrypted_premaster_len,
4912 const uint8_t *premaster,
4913 size_t premaster_len)
4914{
4915 if (encrypted_premaster_len < 8) {
4916 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4917 return 0;
4918 }
4919
f0deb4d3 4920 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 4921 return nss_keylog_int("RSA",
4922 ssl,
4923 encrypted_premaster,
f0deb4d3 4924 8,
2faa1b48
CB		 4925 premaster,
4926 premaster_len);
4927}
4928
2c7bd692
CB		 4929int ssl_log_secret(SSL *ssl,
4930 const char *label,
4931 const uint8_t *secret,
4932 size_t secret_len)
2faa1b48 4933{
2c7bd692 4934 return nss_keylog_int(label,
2faa1b48 4935 ssl,
2c7bd692
CB		 4936 ssl->s3->client_random,
4937 SSL3_RANDOM_SIZE,
4938 secret,
4939 secret_len);
2faa1b48
CB		 4940}
4941
ccb8e6e0
BK		 4942#define SSLV2_CIPHER_LEN 3
4943
90134d98
BK		 4944int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4945 int *al)
ccb8e6e0 4946{
ccb8e6e0 4947 int n;
ccb8e6e0
BK		 4948
4949 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4950
4951 if (PACKET_remaining(cipher_suites) == 0) {
90134d98 4952 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
ccb8e6e0 4953 *al = SSL_AD_ILLEGAL_PARAMETER;
90134d98 4954 return 0;
ccb8e6e0
BK		 4955 }
4956
4957 if (PACKET_remaining(cipher_suites) % n != 0) {
90134d98 4958 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
ccb8e6e0
BK		 4959 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4960 *al = SSL_AD_DECODE_ERROR;
90134d98 4961 return 0;
ccb8e6e0
BK		 4962 }
4963
4964 OPENSSL_free(s->s3->tmp.ciphers_raw);
4965 s->s3->tmp.ciphers_raw = NULL;
4966 s->s3->tmp.ciphers_rawlen = 0;
4967
4968 if (sslv2format) {
4969 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4970 PACKET sslv2ciphers = *cipher_suites;
4971 unsigned int leadbyte;
4972 unsigned char *raw;
4973
4974 /*
4975 * We store the raw ciphers list in SSLv3+ format so we need to do some
4976 * preprocessing to convert the list first. If there are any SSLv2 only
4977 * ciphersuites with a non-zero leading byte then we are going to
4978 * slightly over allocate because we won't store those. But that isn't a
4979 * problem.
4980 */
4981 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4982 s->s3->tmp.ciphers_raw = raw;
4983 if (raw == NULL) {
4984 *al = SSL_AD_INTERNAL_ERROR;
4985 goto err;
4986 }
4987 for (s->s3->tmp.ciphers_rawlen = 0;
4988 PACKET_remaining(&sslv2ciphers) > 0;
4989 raw += TLS_CIPHER_LEN) {
4990 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
4991 || (leadbyte == 0
4992 && !PACKET_copy_bytes(&sslv2ciphers, raw,
4993 TLS_CIPHER_LEN))
4994 || (leadbyte != 0
4995 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
fb34a0f4 4996 *al = SSL_AD_DECODE_ERROR;
ccb8e6e0
BK		 4997 OPENSSL_free(s->s3->tmp.ciphers_raw);
4998 s->s3->tmp.ciphers_raw = NULL;
4999 s->s3->tmp.ciphers_rawlen = 0;
5000 goto err;
5001 }
5002 if (leadbyte == 0)
5003 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5004 }
5005 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5006 &s->s3->tmp.ciphers_rawlen)) {
5007 *al = SSL_AD_INTERNAL_ERROR;
5008 goto err;
5009 }
90134d98
BK		 5010 return 1;
5011 err:
5012 return 0;
5013}
5014
5015int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5016 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5017 STACK_OF(SSL_CIPHER) **scsvs)
5018{
5019 int alert;
5020 PACKET pkt;
5021
5022 if (!PACKET_buf_init(&pkt, bytes, len))
5023 return 0;
5024 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5025}
5026
5027int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5028 STACK_OF(SSL_CIPHER) **skp,
5029 STACK_OF(SSL_CIPHER) **scsvs_out,
5030 int sslv2format, int *al)
5031{
5032 const SSL_CIPHER *c;
5033 STACK_OF(SSL_CIPHER) *sk = NULL;
5034 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5035 int n;
5036 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5037 unsigned char cipher[SSLV2_CIPHER_LEN];
5038
5039 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5040
5041 if (PACKET_remaining(cipher_suites) == 0) {
5042 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5043 *al = SSL_AD_ILLEGAL_PARAMETER;
5044 return 0;
5045 }
5046
5047 if (PACKET_remaining(cipher_suites) % n != 0) {
5048 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5049 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5050 *al = SSL_AD_DECODE_ERROR;
5051 return 0;
5052 }
5053
5054 sk = sk_SSL_CIPHER_new_null();
5055 scsvs = sk_SSL_CIPHER_new_null();
5056 if (sk == NULL || scsvs == NULL) {
5057 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5058 *al = SSL_AD_INTERNAL_ERROR;
5059 goto err;
5060 }
ccb8e6e0
BK		 5061
5062 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5063 /*
5064 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5065 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5066 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5067 */
5068 if (sslv2format && cipher[0] != '\0')
5069 continue;
5070
ccb8e6e0
BK		 5071 /* For SSLv2-compat, ignore leading 0-byte. */
5072 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5073 if (c != NULL) {
90134d98
BK		 5074 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5075 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
ccb8e6e0
BK		 5076 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5077 *al = SSL_AD_INTERNAL_ERROR;
5078 goto err;
5079 }
5080 }
5081 }
5082 if (PACKET_remaining(cipher_suites) > 0) {
fb34a0f4
MC		 5083 *al = SSL_AD_DECODE_ERROR;
5084 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5085 goto err;
5086 }
5087
90134d98
BK		 5088 if (skp != NULL)
5089 *skp = sk;
5090 else
5091 sk_SSL_CIPHER_free(sk);
5092 if (scsvs_out != NULL)
5093 *scsvs_out = scsvs;
5094 else
5095 sk_SSL_CIPHER_free(scsvs);
5096 return 1;
ccb8e6e0
BK		 5097 err:
5098 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5099 sk_SSL_CIPHER_free(scsvs);
5100 return 0;
ccb8e6e0 5101}
3fc8d856
MC		 5102
5103int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5104{
5105 ctx->max_early_data = max_early_data;
5106
5107 return 1;
5108}
5109
46dcb945 5110uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5111{
5112 return ctx->max_early_data;
5113}
5114
5115int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5116{
5117 s->max_early_data = max_early_data;
5118
5119 return 1;
5120}
5121
a8e75d56 5122uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5123{
5124 return s->max_early_data;
5125}
ae3947de
RS		 5126
5127int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5128{
2139145b
BK		 5129 if (s->drbg != NULL) {
5130 /*
5131 * Currently, it's the duty of the caller to serialize the generate
5132 * requests to the DRBG. So formally we have to check whether
5133 * s->drbg->lock != NULL and take the lock if this is the case.
5134 * However, this DRBG is unique to a given SSL object, and we already
5135 * require that SSL objects are only accessed by a single thread at
5136 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5137 * no risk that this DRBG is accessed by a child DRBG in parallel
5138 * for reseeding. As such, we can rely on the application's
5139 * serialization of SSL accesses for the needed concurrency protection
5140 * here.
5141 */
5142 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5143 }
ae3947de
RS		 5144 return RAND_bytes(rnd, (int)size);
5145}
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