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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;
cbe29648 680 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 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 690 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 691
692 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 693 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 694 s->split_send_fragment = ctx->split_send_fragment;
695 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 696 if (s->max_pipelines > 1)
697 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 698 if (ctx->default_read_buf_len > 0)
699 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 700
16203f7b 701 SSL_CTX_up_ref(ctx);
0f113f3e 702 s->ctx = ctx;
aff8c126
RS		 703 s->ext.debug_cb = 0;
704 s->ext.debug_arg = NULL;
705 s->ext.ticket_expected = 0;
706 s->ext.status_type = ctx->ext.status_type;
707 s->ext.status_expected = 0;
708 s->ext.ocsp.ids = NULL;
709 s->ext.ocsp.exts = NULL;
710 s->ext.ocsp.resp = NULL;
711 s->ext.ocsp.resp_len = 0;
16203f7b 712 SSL_CTX_up_ref(ctx);
222da979 713 s->session_ctx = ctx;
a230b26e 714#ifndef OPENSSL_NO_EC
aff8c126
RS		 715 if (ctx->ext.ecpointformats) {
716 s->ext.ecpointformats =
717 OPENSSL_memdup(ctx->ext.ecpointformats,
718 ctx->ext.ecpointformats_len);
719 if (!s->ext.ecpointformats)
0f113f3e 720 goto err;
aff8c126
RS		 721 s->ext.ecpointformats_len =
722 ctx->ext.ecpointformats_len;
723 }
724 if (ctx->ext.supportedgroups) {
725 s->ext.supportedgroups =
726 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 727 ctx->ext.supportedgroups_len
b92d7b62 728 * sizeof(*ctx->ext.supportedgroups));
aff8c126 729 if (!s->ext.supportedgroups)
0f113f3e 730 goto err;
aff8c126 731 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 732 }
a230b26e
EK		 733#endif
734#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 735 s->ext.npn = NULL;
a230b26e 736#endif
6f017a8f 737
aff8c126
RS		 738 if (s->ctx->ext.alpn) {
739 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
740 if (s->ext.alpn == NULL)
0f113f3e 741 goto err;
aff8c126
RS		 742 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
743 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 744 }
d02b48c6 745
696178ed 746 s->verified_chain = NULL;
0f113f3e 747 s->verify_result = X509_V_OK;
d02b48c6 748
a974e64a
MC		 749 s->default_passwd_callback = ctx->default_passwd_callback;
750 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
751
0f113f3e 752 s->method = ctx->method;
d02b48c6 753
44c04a2e
MC		 754 s->key_update = SSL_KEY_UPDATE_NONE;
755
0f113f3e
MC		 756 if (!s->method->ssl_new(s))
757 goto err;
d02b48c6 758
0f113f3e 759 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 760
61986d32 761 if (!SSL_clear(s))
69f68237 762 goto err;
58964a49 763
25a807bc
F		 764 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
765 goto err;
58964a49 766
ddac1974 767#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 768 s->psk_client_callback = ctx->psk_client_callback;
769 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 770#endif
f46184bd
MC		 771 s->psk_find_session_cb = ctx->psk_find_session_cb;
772 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 773
07bbc92c
MC		 774 s->job = NULL;
775
ed29e82a
RP		 776#ifndef OPENSSL_NO_CT
777 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 778 ctx->ct_validation_callback_arg))
ed29e82a
RP		 779 goto err;
780#endif
781
16203f7b 782 return s;
0f113f3e 783 err:
62adbcee 784 SSL_free(s);
0f113f3e 785 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 786 return NULL;
0f113f3e 787}
d02b48c6 788
e417070c
RS		 789int SSL_is_dtls(const SSL *s)
790{
791 return SSL_IS_DTLS(s) ? 1 : 0;
792}
793
c5ebfcab 794int SSL_up_ref(SSL *s)
a18a31e4 795{
16203f7b 796 int i;
c5ebfcab 797
2f545ae4 798 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 799 return 0;
800
801 REF_PRINT_COUNT("SSL", s);
802 REF_ASSERT_ISNT(i < 2);
803 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 804}
805
0f113f3e
MC		 806int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
807 unsigned int sid_ctx_len)
808{
cbe29648 809 if (sid_ctx_len > sizeof(ctx->sid_ctx)) {
0f113f3e
MC		 810 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
811 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
812 return 0;
813 }
814 ctx->sid_ctx_length = sid_ctx_len;
815 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 816
817 return 1;
0f113f3e 818}
4eb77b26 819
0f113f3e
MC		 820int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
821 unsigned int sid_ctx_len)
822{
823 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
824 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
825 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
826 return 0;
827 }
828 ssl->sid_ctx_length = sid_ctx_len;
829 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 830
831 return 1;
0f113f3e 832}
b4cadc6e 833
dc644fe2 834int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 835{
16203f7b 836 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 837 ctx->generate_session_id = cb;
16203f7b 838 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 839 return 1;
840}
dc644fe2
GT		 841
842int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 843{
16203f7b 844 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 845 ssl->generate_session_id = cb;
16203f7b 846 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 847 return 1;
848}
dc644fe2 849
f85c9904 850int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 851 unsigned int id_len)
852{
853 /*
854 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 855 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 856 * find if there's a session in the hash table that would conflict with
857 * any new session built out of this id/id_len and the ssl_version in use
858 * by this SSL.
859 */
860 SSL_SESSION r, *p;
861
cbe29648 862 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 863 return 0;
864
865 r.ssl_version = ssl->version;
866 r.session_id_length = id_len;
867 memcpy(r.session_id, id, id_len);
868
e2bb9b9b
TS		 869 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
870 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
871 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 872 return (p != NULL);
873}
dc644fe2 874
bb7cd4e3 875int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 876{
877 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
878}
bb7cd4e3
DSH		 879
880int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 881{
882 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
883}
926a56bf 884
bb7cd4e3 885int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 886{
887 return X509_VERIFY_PARAM_set_trust(s->param, trust);
888}
bb7cd4e3
DSH		 889
890int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 891{
892 return X509_VERIFY_PARAM_set_trust(s->param, trust);
893}
bb7cd4e3 894
919ba009
VD		 895int SSL_set1_host(SSL *s, const char *hostname)
896{
897 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
898}
899
900int SSL_add1_host(SSL *s, const char *hostname)
901{
902 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
903}
904
905void SSL_set_hostflags(SSL *s, unsigned int flags)
906{
907 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
908}
909
4588cb44 910const char *SSL_get0_peername(SSL *s)
919ba009
VD		 911{
912 return X509_VERIFY_PARAM_get0_peername(s->param);
913}
914
915int SSL_CTX_dane_enable(SSL_CTX *ctx)
916{
917 return dane_ctx_enable(&ctx->dane);
918}
919
5ae4ceb9
VD		 920unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
921{
922 unsigned long orig = ctx->dane.flags;
923
924 ctx->dane.flags |= flags;
925 return orig;
926}
927
928unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
929{
930 unsigned long orig = ctx->dane.flags;
931
932 ctx->dane.flags &= ~flags;
933 return orig;
934}
935
919ba009
VD		 936int SSL_dane_enable(SSL *s, const char *basedomain)
937{
b9aec69a 938 SSL_DANE *dane = &s->dane;
919ba009
VD		 939
940 if (s->ctx->dane.mdmax == 0) {
941 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
942 return 0;
943 }
944 if (dane->trecs != NULL) {
945 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
946 return 0;
947 }
948
8d887efa
VD		 949 /*
950 * Default SNI name. This rejects empty names, while set1_host below
951 * accepts them and disables host name checks. To avoid side-effects with
952 * invalid input, set the SNI name first.
953 */
aff8c126 954 if (s->ext.hostname == NULL) {
dccd20d1 955 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 956 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 957 return -1;
8d887efa
VD		 958 }
959 }
960
919ba009
VD		 961 /* Primary RFC6125 reference identifier */
962 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
963 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
964 return -1;
965 }
966
919ba009
VD		 967 dane->mdpth = -1;
968 dane->pdpth = -1;
969 dane->dctx = &s->ctx->dane;
970 dane->trecs = sk_danetls_record_new_null();
971
972 if (dane->trecs == NULL) {
973 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
974 return -1;
975 }
976 return 1;
977}
978
5ae4ceb9
VD		 979unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
980{
981 unsigned long orig = ssl->dane.flags;
982
983 ssl->dane.flags |= flags;
984 return orig;
985}
986
987unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
988{
989 unsigned long orig = ssl->dane.flags;
990
991 ssl->dane.flags &= ~flags;
992 return orig;
993}
994
919ba009
VD		 995int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
996{
b9aec69a 997 SSL_DANE *dane = &s->dane;
919ba009 998
c0a445a9 999 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1000 return -1;
1001 if (dane->mtlsa) {
1002 if (mcert)
1003 *mcert = dane->mcert;
1004 if (mspki)
1005 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1006 }
1007 return dane->mdpth;
1008}
1009
1010int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1011 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1012{
b9aec69a 1013 SSL_DANE *dane = &s->dane;
919ba009 1014
c0a445a9 1015 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1016 return -1;
1017 if (dane->mtlsa) {
1018 if (usage)
1019 *usage = dane->mtlsa->usage;
1020 if (selector)
1021 *selector = dane->mtlsa->selector;
1022 if (mtype)
1023 *mtype = dane->mtlsa->mtype;
1024 if (data)
1025 *data = dane->mtlsa->data;
1026 if (dlen)
1027 *dlen = dane->mtlsa->dlen;
1028 }
1029 return dane->mdpth;
1030}
1031
b9aec69a 1032SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1033{
1034 return &s->dane;
1035}
1036
1037int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1038 uint8_t mtype, unsigned char *data, size_t dlen)
1039{
1040 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1041}
1042
a230b26e
EK		 1043int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1044 uint8_t ord)
919ba009
VD		 1045{
1046 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1047}
1048
ccf11751 1049int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1050{
1051 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1052}
ccf11751
DSH		 1053
1054int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1055{
1056 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1057}
ccf11751 1058
7af31968 1059X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1060{
1061 return ctx->param;
1062}
7af31968
DSH		 1063
1064X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1065{
1066 return ssl->param;
1067}
7af31968 1068
a5ee80b9 1069void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1070{
1071 ssl_cert_clear_certs(s->cert);
1072}
a5ee80b9 1073
4f43d0e7 1074void SSL_free(SSL *s)
0f113f3e
MC		 1075{
1076 int i;
58964a49 1077
0f113f3e
MC		 1078 if (s == NULL)
1079 return;
e03ddfae 1080
2f545ae4 1081 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1082 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1083 if (i > 0)
1084 return;
f3f1cf84 1085 REF_ASSERT_ISNT(i < 0);
d02b48c6 1086
222561fe 1087 X509_VERIFY_PARAM_free(s->param);
919ba009 1088 dane_final(&s->dane);
0f113f3e
MC		 1089 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1090
b77f3ed1 1091 /* Ignore return value */
2e7dc7cd
MC		 1092 ssl_free_wbio_buffer(s);
1093
65e2d672 1094 BIO_free_all(s->wbio);
325cfa85 1095 BIO_free_all(s->rbio);
0f113f3e 1096
25aaa98a 1097 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1098
1099 /* add extra stuff */
25aaa98a
RS		 1100 sk_SSL_CIPHER_free(s->cipher_list);
1101 sk_SSL_CIPHER_free(s->cipher_list_by_id);
0f113f3e
MC		 1102
1103 /* Make the next call work :-) */
1104 if (s->session != NULL) {
1105 ssl_clear_bad_session(s);
1106 SSL_SESSION_free(s->session);
1107 }
9368f865 1108 SSL_SESSION_free(s->psksession);
add8d0e9 1109 OPENSSL_free(s->psksession_id);
0f113f3e 1110
d31fb0b5 1111 clear_ciphers(s);
d02b48c6 1112
e0e920b1 1113 ssl_cert_free(s->cert);
0f113f3e 1114 /* Free up if allocated */
d02b48c6 1115
aff8c126 1116 OPENSSL_free(s->ext.hostname);
222da979 1117 SSL_CTX_free(s->session_ctx);
e481f9b9 1118#ifndef OPENSSL_NO_EC
aff8c126
RS		 1119 OPENSSL_free(s->ext.ecpointformats);
1120 OPENSSL_free(s->ext.supportedgroups);
a230b26e 1121#endif /* OPENSSL_NO_EC */
aff8c126 1122 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1123#ifndef OPENSSL_NO_OCSP
aff8c126 1124 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1125#endif
ed29e82a
RP		 1126#ifndef OPENSSL_NO_CT
1127 SCT_LIST_free(s->scts);
aff8c126 1128 OPENSSL_free(s->ext.scts);
ed29e82a 1129#endif
aff8c126
RS		 1130 OPENSSL_free(s->ext.ocsp.resp);
1131 OPENSSL_free(s->ext.alpn);
cfef5027 1132 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1133 OPENSSL_free(s->clienthello);
0f113f3e 1134
fa7c2637 1135 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
0f113f3e 1136
696178ed
DSH		 1137 sk_X509_pop_free(s->verified_chain, X509_free);
1138
0f113f3e
MC		 1139 if (s->method != NULL)
1140 s->method->ssl_free(s);
1141
f161995e 1142 RECORD_LAYER_release(&s->rlayer);
33d23b87 1143
e0e920b1 1144 SSL_CTX_free(s->ctx);
7c3908dd 1145
ff75a257
MC		 1146 ASYNC_WAIT_CTX_free(s->waitctx);
1147
e481f9b9 1148#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1149 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1150#endif
1151
e783bae2 1152#ifndef OPENSSL_NO_SRTP
25aaa98a 1153 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1154#endif
1155
ae3947de 1156 RAND_DRBG_free(s->drbg);
16203f7b
AG		 1157 CRYPTO_THREAD_lock_free(s->lock);
1158
0f113f3e
MC		 1159 OPENSSL_free(s);
1160}
1161
65e2d672 1162void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1163{
65e2d672 1164 BIO_free_all(s->rbio);
3ffbe008
MC		 1165 s->rbio = rbio;
1166}
1167
65e2d672 1168void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1169{
1170 /*
1171 * If the output buffering BIO is still in place, remove it
1172 */
2e7dc7cd
MC		 1173 if (s->bbio != NULL)
1174 s->wbio = BIO_pop(s->wbio);
1175
65e2d672 1176 BIO_free_all(s->wbio);
0f113f3e 1177 s->wbio = wbio;
2e7dc7cd
MC		 1178
1179 /* Re-attach |bbio| to the new |wbio|. */
1180 if (s->bbio != NULL)
1181 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1182}
d02b48c6 1183
3ffbe008
MC		 1184void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1185{
65e2d672
MC		 1186 /*
1187 * For historical reasons, this function has many different cases in
1188 * ownership handling.
1189 */
1190
1191 /* If nothing has changed, do nothing */
1192 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1193 return;
1194
1195 /*
1196 * If the two arguments are equal then one fewer reference is granted by the
1197 * caller than we want to take
1198 */
1199 if (rbio != NULL && rbio == wbio)
1200 BIO_up_ref(rbio);
1201
1202 /*
1203 * If only the wbio is changed only adopt one reference.
1204 */
1205 if (rbio == SSL_get_rbio(s)) {
1206 SSL_set0_wbio(s, wbio);
1207 return;
1208 }
1209 /*
1210 * There is an asymmetry here for historical reasons. If only the rbio is
1211 * changed AND the rbio and wbio were originally different, then we only
1212 * adopt one reference.
1213 */
1214 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1215 SSL_set0_rbio(s, rbio);
1216 return;
1217 }
1218
1219 /* Otherwise, adopt both references. */
1220 SSL_set0_rbio(s, rbio);
1221 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1222}
1223
0821bcd4 1224BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1225{
2e7dc7cd 1226 return s->rbio;
0f113f3e 1227}
d02b48c6 1228
0821bcd4 1229BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1230{
2e7dc7cd
MC		 1231 if (s->bbio != NULL) {
1232 /*
1233 * If |bbio| is active, the true caller-configured BIO is its
1234 * |next_bio|.
1235 */
1236 return BIO_next(s->bbio);
1237 }
1238 return s->wbio;
0f113f3e 1239}
d02b48c6 1240
0821bcd4 1241int SSL_get_fd(const SSL *s)
0f113f3e 1242{
2e7dc7cd 1243 return SSL_get_rfd(s);
0f113f3e 1244}
24cbf3ef 1245
0821bcd4 1246int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1247{
1248 int ret = -1;
1249 BIO *b, *r;
1250
1251 b = SSL_get_rbio(s);
1252 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1253 if (r != NULL)
1254 BIO_get_fd(r, &ret);
26a7d938 1255 return ret;
0f113f3e 1256}
d02b48c6 1257
0821bcd4 1258int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1259{
1260 int ret = -1;
1261 BIO *b, *r;
1262
1263 b = SSL_get_wbio(s);
1264 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1265 if (r != NULL)
1266 BIO_get_fd(r, &ret);
26a7d938 1267 return ret;
0f113f3e 1268}
24cbf3ef 1269
bc36ee62 1270#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1271int SSL_set_fd(SSL *s, int fd)
1272{
1273 int ret = 0;
1274 BIO *bio = NULL;
1275
1276 bio = BIO_new(BIO_s_socket());
1277
1278 if (bio == NULL) {
1279 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1280 goto err;
1281 }
1282 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1283 SSL_set_bio(s, bio, bio);
1284 ret = 1;
1285 err:
26a7d938 1286 return ret;
0f113f3e 1287}
d02b48c6 1288
0f113f3e
MC		 1289int SSL_set_wfd(SSL *s, int fd)
1290{
2e7dc7cd 1291 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1292
2e7dc7cd
MC		 1293 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1294 || (int)BIO_get_fd(rbio, NULL) != fd) {
1295 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1296
1297 if (bio == NULL) {
1298 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1299 return 0;
0f113f3e
MC		 1300 }
1301 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1302 SSL_set0_wbio(s, bio);
2e7dc7cd 1303 } else {
65e2d672
MC		 1304 BIO_up_ref(rbio);
1305 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1306 }
1307 return 1;
0f113f3e
MC		 1308}
1309
1310int SSL_set_rfd(SSL *s, int fd)
1311{
2e7dc7cd 1312 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1313
2e7dc7cd
MC		 1314 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1315 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1316 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1317
1318 if (bio == NULL) {
1319 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1320 return 0;
0f113f3e
MC		 1321 }
1322 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1323 SSL_set0_rbio(s, bio);
2e7dc7cd 1324 } else {
65e2d672
MC		 1325 BIO_up_ref(wbio);
1326 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1327 }
1328
1329 return 1;
0f113f3e
MC		 1330}
1331#endif
ca03109c
BM		 1332
1333/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1334size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1335{
1336 size_t ret = 0;
1337
1338 if (s->s3 != NULL) {
1339 ret = s->s3->tmp.finish_md_len;
1340 if (count > ret)
1341 count = ret;
1342 memcpy(buf, s->s3->tmp.finish_md, count);
1343 }
1344 return ret;
1345}
ca03109c
BM		 1346
1347/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1348size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1349{
1350 size_t ret = 0;
ca03109c 1351
0f113f3e
MC		 1352 if (s->s3 != NULL) {
1353 ret = s->s3->tmp.peer_finish_md_len;
1354 if (count > ret)
1355 count = ret;
1356 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1357 }
1358 return ret;
1359}
ca03109c 1360
0821bcd4 1361int SSL_get_verify_mode(const SSL *s)
0f113f3e 1362{
26a7d938 1363 return s->verify_mode;
0f113f3e 1364}
d02b48c6 1365
0821bcd4 1366int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1367{
1368 return X509_VERIFY_PARAM_get_depth(s->param);
1369}
7f89714e 1370
0f113f3e 1371int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1372 return s->verify_callback;
0f113f3e 1373}
d02b48c6 1374
0821bcd4 1375int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1376{
26a7d938 1377 return ctx->verify_mode;
0f113f3e 1378}
d02b48c6 1379
0821bcd4 1380int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1381{
1382 return X509_VERIFY_PARAM_get_depth(ctx->param);
1383}
1384
1385int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1386 return ctx->default_verify_callback;
0f113f3e
MC		 1387}
1388
1389void SSL_set_verify(SSL *s, int mode,
1390 int (*callback) (int ok, X509_STORE_CTX *ctx))
1391{
1392 s->verify_mode = mode;
1393 if (callback != NULL)
1394 s->verify_callback = callback;
1395}
1396
1397void SSL_set_verify_depth(SSL *s, int depth)
1398{
1399 X509_VERIFY_PARAM_set_depth(s->param, depth);
1400}
1401
1402void SSL_set_read_ahead(SSL *s, int yes)
1403{
52e1d7b1 1404 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1405}
d02b48c6 1406
0821bcd4 1407int SSL_get_read_ahead(const SSL *s)
0f113f3e 1408{
52e1d7b1 1409 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1410}
d02b48c6 1411
0821bcd4 1412int SSL_pending(const SSL *s)
0f113f3e 1413{
8b0e934a
MC		 1414 size_t pending = s->method->ssl_pending(s);
1415
0f113f3e
MC		 1416 /*
1417 * SSL_pending cannot work properly if read-ahead is enabled
1418 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1419 * impossible to fix since SSL_pending cannot report errors that may be
1420 * observed while scanning the new data. (Note that SSL_pending() is
1421 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1422 *
1423 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1424 * we just return INT_MAX.
0f113f3e 1425 */
348240c6 1426 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1427}
d02b48c6 1428
49580f25
MC		 1429int SSL_has_pending(const SSL *s)
1430{
1431 /*
1432 * Similar to SSL_pending() but returns a 1 to indicate that we have
1433 * unprocessed data available or 0 otherwise (as opposed to the number of
1434 * bytes available). Unlike SSL_pending() this will take into account
1435 * read_ahead data. A 1 return simply indicates that we have unprocessed
1436 * data. That data may not result in any application data, or we may fail
1437 * to parse the records for some reason.
1438 */
b8c49611 1439 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1440 return 1;
1441
1442 return RECORD_LAYER_read_pending(&s->rlayer);
1443}
1444
0821bcd4 1445X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1446{
1447 X509 *r;
d02b48c6 1448
0f113f3e
MC		 1449 if ((s == NULL) || (s->session == NULL))
1450 r = NULL;
1451 else
1452 r = s->session->peer;
d02b48c6 1453
0f113f3e 1454 if (r == NULL)
26a7d938 1455 return r;
d02b48c6 1456
05f0fb9f 1457 X509_up_ref(r);
0f113f3e 1458
26a7d938 1459 return r;
0f113f3e 1460}
d02b48c6 1461
0821bcd4 1462STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1463{
1464 STACK_OF(X509) *r;
1465
c34b0f99 1466 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1467 r = NULL;
1468 else
c34b0f99 1469 r = s->session->peer_chain;
0f113f3e
MC		 1470
1471 /*
1472 * If we are a client, cert_chain includes the peer's own certificate; if
1473 * we are a server, it does not.
1474 */
1475
26a7d938 1476 return r;
0f113f3e
MC		 1477}
1478
1479/*
1480 * Now in theory, since the calling process own 't' it should be safe to
1481 * modify. We need to be able to read f without being hassled
1482 */
17dd65e6 1483int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1484{
16203f7b 1485 int i;
0f113f3e 1486 /* Do we need to to SSL locking? */
61986d32 1487 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1488 return 0;
69f68237 1489 }
0f113f3e
MC		 1490
1491 /*
87d9cafa 1492 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1493 */
1494 if (t->method != f->method) {
919ba009
VD		 1495 t->method->ssl_free(t);
1496 t->method = f->method;
1497 if (t->method->ssl_new(t) == 0)
1498 return 0;
0f113f3e
MC		 1499 }
1500
2f545ae4 1501 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1502 ssl_cert_free(t->cert);
1503 t->cert = f->cert;
348240c6 1504 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1505 return 0;
69f68237 1506 }
17dd65e6
MC		 1507
1508 return 1;
0f113f3e 1509}
d02b48c6 1510
58964a49 1511/* Fix this so it checks all the valid key/cert options */
0821bcd4 1512int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1513{
a230b26e
EK		 1514 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1515 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1516 return 0;
0f113f3e
MC		 1517 }
1518 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1519 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1520 return 0;
0f113f3e 1521 }
26a7d938
K		 1522 return X509_check_private_key
1523 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1524}
d02b48c6 1525
58964a49 1526/* Fix this function so that it takes an optional type parameter */
0821bcd4 1527int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1528{
1529 if (ssl == NULL) {
1530 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1531 return 0;
0f113f3e 1532 }
0f113f3e
MC		 1533 if (ssl->cert->key->x509 == NULL) {
1534 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1535 return 0;
0f113f3e
MC		 1536 }
1537 if (ssl->cert->key->privatekey == NULL) {
1538 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1539 return 0;
0f113f3e 1540 }
26a7d938
K		 1541 return X509_check_private_key(ssl->cert->key->x509,
1542 ssl->cert->key->privatekey);
0f113f3e 1543}
d02b48c6 1544
07bbc92c
MC		 1545int SSL_waiting_for_async(SSL *s)
1546{
e8aa8b6c 1547 if (s->job)
82676094
MC		 1548 return 1;
1549
07bbc92c
MC		 1550 return 0;
1551}
1552
ff75a257 1553int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1554{
ff75a257
MC		 1555 ASYNC_WAIT_CTX *ctx = s->waitctx;
1556
1557 if (ctx == NULL)
1558 return 0;
1559 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1560}
f4da39d2 1561
ff75a257
MC		 1562int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1563 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1564{
1565 ASYNC_WAIT_CTX *ctx = s->waitctx;
1566
1567 if (ctx == NULL)
1568 return 0;
1569 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1570 numdelfds);
f4da39d2
MC		 1571}
1572
4f43d0e7 1573int SSL_accept(SSL *s)
0f113f3e 1574{
c4c32155 1575 if (s->handshake_func == NULL) {
0f113f3e
MC		 1576 /* Not properly initialized yet */
1577 SSL_set_accept_state(s);
07bbc92c 1578 }
add2f5ca
MC		 1579
1580 return SSL_do_handshake(s);
0f113f3e 1581}
d02b48c6 1582
4f43d0e7 1583int SSL_connect(SSL *s)
0f113f3e 1584{
c4c32155 1585 if (s->handshake_func == NULL) {
0f113f3e
MC		 1586 /* Not properly initialized yet */
1587 SSL_set_connect_state(s);
add2f5ca 1588 }
b31b04d9 1589
add2f5ca 1590 return SSL_do_handshake(s);
0f113f3e 1591}
d02b48c6 1592
0821bcd4 1593long SSL_get_default_timeout(const SSL *s)
0f113f3e 1594{
26a7d938 1595 return s->method->get_timeout();
0f113f3e
MC		 1596}
1597
7fecbf6f 1598static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1599 int (*func) (void *))
1600{
add2f5ca 1601 int ret;
ff75a257
MC		 1602 if (s->waitctx == NULL) {
1603 s->waitctx = ASYNC_WAIT_CTX_new();
1604 if (s->waitctx == NULL)
1605 return -1;
1606 }
e8aa8b6c 1607 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1608 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1609 case ASYNC_ERR:
1610 s->rwstate = SSL_NOTHING;
7fecbf6f 1611 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1612 return -1;
1613 case ASYNC_PAUSE:
1614 s->rwstate = SSL_ASYNC_PAUSED;
1615 return -1;
fc7f190c
MC		 1616 case ASYNC_NO_JOBS:
1617 s->rwstate = SSL_ASYNC_NO_JOBS;
1618 return -1;
add2f5ca
MC		 1619 case ASYNC_FINISH:
1620 s->job = NULL;
1621 return ret;
1622 default:
1623 s->rwstate = SSL_NOTHING;
7fecbf6f 1624 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1625 /* Shouldn't happen */
1626 return -1;
1627 }
1628}
07bbc92c 1629
add2f5ca 1630static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1631{
1632 struct ssl_async_args *args;
1633 SSL *s;
1634 void *buf;
348240c6 1635 size_t num;
07bbc92c
MC		 1636
1637 args = (struct ssl_async_args *)vargs;
1638 s = args->s;
1639 buf = args->buf;
1640 num = args->num;
ec447924
MC		 1641 switch (args->type) {
1642 case READFUNC:
7ee8627f 1643 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1644 case WRITEFUNC:
7ee8627f 1645 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1646 case OTHERFUNC:
1647 return args->f.func_other(s);
1648 }
1649 return -1;
07bbc92c
MC		 1650}
1651
4ee7d3f9 1652int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1653{
c4c32155 1654 if (s->handshake_func == NULL) {
4ee7d3f9 1655 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1656 return -1;
1657 }
1658
1659 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1660 s->rwstate = SSL_NOTHING;
4ee7d3f9 1661 return 0;
0f113f3e 1662 }
07bbc92c 1663
564547e4
MC		 1664 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1665 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1666 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1667 return 0;
1668 }
564547e4
MC		 1669 /*
1670 * If we are a client and haven't received the ServerHello etc then we
1671 * better do that
1672 */
1673 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1674
e8aa8b6c 1675 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1676 struct ssl_async_args args;
eda75751 1677 int ret;
add2f5ca
MC		 1678
1679 args.s = s;
1680 args.buf = buf;
1681 args.num = num;
ec447924
MC		 1682 args.type = READFUNC;
1683 args.f.func_read = s->method->ssl_read;
add2f5ca 1684
eda75751 1685 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1686 *readbytes = s->asyncrw;
eda75751 1687 return ret;
07bbc92c 1688 } else {
54105ddd 1689 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1690 }
0f113f3e
MC		 1691}
1692
4ee7d3f9 1693int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1694{
1695 int ret;
54105ddd 1696 size_t readbytes;
eda75751
MC		 1697
1698 if (num < 0) {
4ee7d3f9 1699 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1700 return -1;
1701 }
1702
4ee7d3f9 1703 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1704
1705 /*
1706 * The cast is safe here because ret should be <= INT_MAX because num is
1707 * <= INT_MAX
1708 */
1709 if (ret > 0)
54105ddd 1710 ret = (int)readbytes;
eda75751
MC		 1711
1712 return ret;
1713}
1714
4ee7d3f9
KR		 1715int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1716{
1717 int ret = ssl_read_internal(s, buf, num, readbytes);
1718
1719 if (ret < 0)
1720 ret = 0;
1721 return ret;
1722}
1723
f533fbd4 1724int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1725{
1726 int ret;
1727
1728 if (!s->server) {
f533fbd4
MC		 1729 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1730 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1731 }
1732
d781d247
MC		 1733 switch (s->early_data_state) {
1734 case SSL_EARLY_DATA_NONE:
1735 if (!SSL_in_before(s)) {
f533fbd4
MC		 1736 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1737 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1738 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1739 }
1740 /* fall through */
1741
1742 case SSL_EARLY_DATA_ACCEPT_RETRY:
1743 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1744 ret = SSL_accept(s);
1745 if (ret <= 0) {
1746 /* NBIO or error */
1747 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1748 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1749 }
1750 /* fall through */
1751
1752 case SSL_EARLY_DATA_READ_RETRY:
1753 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1754 s->early_data_state = SSL_EARLY_DATA_READING;
1755 ret = SSL_read_ex(s, buf, num, readbytes);
1756 /*
ef6c191b
MC		 1757 * State machine will update early_data_state to
1758 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1759 * message
d781d247
MC		 1760 */
1761 if (ret > 0 || (ret <= 0 && s->early_data_state
1762 != SSL_EARLY_DATA_FINISHED_READING)) {
1763 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1764 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1765 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1766 }
1767 } else {
1768 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1769 }
1770 *readbytes = 0;
f533fbd4 1771 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1772
1773 default:
f533fbd4
MC		 1774 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1775 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1776 }
1777}
1778
f5b519c4 1779int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1780{
1781 return s->ext.early_data;
1782}
1783
4ee7d3f9 1784static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1785{
c4c32155 1786 if (s->handshake_func == NULL) {
4ee7d3f9 1787 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1788 return -1;
1789 }
1790
1791 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1792 return 0;
0f113f3e 1793 }
e8aa8b6c 1794 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1795 struct ssl_async_args args;
eda75751 1796 int ret;
0f113f3e 1797
add2f5ca
MC		 1798 args.s = s;
1799 args.buf = buf;
1800 args.num = num;
ec447924
MC		 1801 args.type = READFUNC;
1802 args.f.func_read = s->method->ssl_peek;
07bbc92c 1803
eda75751 1804 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1805 *readbytes = s->asyncrw;
eda75751 1806 return ret;
add2f5ca 1807 } else {
54105ddd 1808 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1809 }
07bbc92c
MC		 1810}
1811
4ee7d3f9 1812int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1813{
1814 int ret;
4ee7d3f9 1815 size_t readbytes;
7ee8627f
MC		 1816
1817 if (num < 0) {
4ee7d3f9 1818 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1819 return -1;
1820 }
1821
4ee7d3f9 1822 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1823
1824 /*
1825 * The cast is safe here because ret should be <= INT_MAX because num is
1826 * <= INT_MAX
1827 */
1828 if (ret > 0)
4ee7d3f9 1829 ret = (int)readbytes;
7ee8627f
MC		 1830
1831 return ret;
1832}
1833
4ee7d3f9
KR		 1834
1835int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1836{
1837 int ret = ssl_peek_internal(s, buf, num, readbytes);
1838
1839 if (ret < 0)
1840 ret = 0;
1841 return ret;
1842}
1843
1844int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1845{
c4c32155 1846 if (s->handshake_func == NULL) {
4ee7d3f9 1847 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1848 return -1;
1849 }
1850
1851 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1852 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1853 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1854 return -1;
0f113f3e 1855 }
07bbc92c 1856
ef6c191b 1857 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1858 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1859 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1860 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1861 return 0;
0a5ece5b 1862 }
564547e4
MC		 1863 /* If we are a client and haven't sent the Finished we better do that */
1864 ossl_statem_check_finish_init(s, 1);
49e7fe12 1865
e8aa8b6c 1866 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1867 int ret;
add2f5ca
MC		 1868 struct ssl_async_args args;
1869
1870 args.s = s;
1871 args.buf = (void *)buf;
1872 args.num = num;
ec447924
MC		 1873 args.type = WRITEFUNC;
1874 args.f.func_write = s->method->ssl_write;
add2f5ca 1875
7ee8627f
MC		 1876 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1877 *written = s->asyncrw;
1878 return ret;
07bbc92c 1879 } else {
7ee8627f 1880 return s->method->ssl_write(s, buf, num, written);
07bbc92c 1881 }
0f113f3e 1882}
d02b48c6 1883
4ee7d3f9
KR		 1884int SSL_write(SSL *s, const void *buf, int num)
1885{
1886 int ret;
1887 size_t written;
1888
1889 if (num < 0) {
1890 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1891 return -1;
1892 }
1893
1894 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1895
1896 /*
1897 * The cast is safe here because ret should be <= INT_MAX because num is
1898 * <= INT_MAX
1899 */
1900 if (ret > 0)
1901 ret = (int)written;
1902
1903 return ret;
1904}
1905
1906int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1907{
1908 int ret = ssl_write_internal(s, buf, num, written);
1909
1910 if (ret < 0)
1911 ret = 0;
1912 return ret;
1913}
1914
0665b4ed 1915int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 1916{
a0cb628b 1917 int ret, early_data_state;
49e7fe12 1918
49e7fe12
MC		 1919 switch (s->early_data_state) {
1920 case SSL_EARLY_DATA_NONE:
09f28874
MC		 1921 if (s->server
1922 || !SSL_in_before(s)
add8d0e9
MC		 1923 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1924 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 1925 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1926 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1927 return 0;
1928 }
1929 /* fall through */
1930
1931 case SSL_EARLY_DATA_CONNECT_RETRY:
1932 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1933 ret = SSL_connect(s);
1934 if (ret <= 0) {
1935 /* NBIO or error */
1936 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1937 return 0;
1938 }
1939 /* fall through */
1940
1941 case SSL_EARLY_DATA_WRITE_RETRY:
1942 s->early_data_state = SSL_EARLY_DATA_WRITING;
1943 ret = SSL_write_ex(s, buf, num, written);
1944 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1945 return ret;
1946
116d0da5 1947 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 1948 case SSL_EARLY_DATA_READ_RETRY:
1949 early_data_state = s->early_data_state;
09f28874
MC		 1950 /* We are a server writing to an unauthenticated client */
1951 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1952 ret = SSL_write_ex(s, buf, num, written);
bbea9f2c 1953 s->early_data_state = early_data_state;
09f28874
MC		 1954 return ret;
1955
49e7fe12 1956 default:
09f28874 1957 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1958 return 0;
1959 }
1960}
1961
4f43d0e7 1962int SSL_shutdown(SSL *s)
0f113f3e
MC		 1963{
1964 /*
1965 * Note that this function behaves differently from what one might
1966 * expect. Return values are 0 for no success (yet), 1 for success; but
1967 * calling it once is usually not enough, even if blocking I/O is used
1968 * (see ssl3_shutdown).
1969 */
1970
c4c32155 1971 if (s->handshake_func == NULL) {
0f113f3e
MC		 1972 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1973 return -1;
1974 }
1975
64f9f406 1976 if (!SSL_in_init(s)) {
e8aa8b6c 1977 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 1978 struct ssl_async_args args;
ec447924 1979
64f9f406
MC		 1980 args.s = s;
1981 args.type = OTHERFUNC;
1982 args.f.func_other = s->method->ssl_shutdown;
ec447924 1983
64f9f406
MC		 1984 return ssl_start_async_job(s, &args, ssl_io_intern);
1985 } else {
1986 return s->method->ssl_shutdown(s);
1987 }
ec447924 1988 } else {
64f9f406
MC		 1989 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1990 return -1;
ec447924 1991 }
0f113f3e 1992}
d02b48c6 1993
4fbfe86a 1994int SSL_key_update(SSL *s, int updatetype)
44c04a2e 1995{
f14afcaa 1996 /*
a9998e2f 1997 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 1998 * negotiated, and that it is appropriate to call SSL_key_update() instead
1999 * of SSL_renegotiate().
2000 */
44c04a2e
MC		 2001 if (!SSL_IS_TLS13(s)) {
2002 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2003 return 0;
2004 }
2005
2006 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2007 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2008 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2009 return 0;
2010 }
2011
2012 if (!SSL_is_init_finished(s)) {
2013 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2014 return 0;
2015 }
2016
2017 ossl_statem_set_in_init(s, 1);
44c04a2e 2018 s->key_update = updatetype;
44c04a2e
MC		 2019 return 1;
2020}
2021
4fbfe86a 2022int SSL_get_key_update_type(SSL *s)
53d1d07d
MC		 2023{
2024 return s->key_update;
2025}
2026
4f43d0e7 2027int SSL_renegotiate(SSL *s)
0f113f3e 2028{
44c04a2e
MC		 2029 if (SSL_IS_TLS13(s)) {
2030 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2031 return 0;
44c04a2e 2032 }
cda6b998 2033
db0f35dd
TS		 2034 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2035 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2036 return 0;
2037 }
44959ee4 2038
db0f35dd 2039 s->renegotiate = 1;
0f113f3e 2040 s->new_session = 1;
44959ee4 2041
26a7d938 2042 return s->method->ssl_renegotiate(s);
0f113f3e 2043}
d02b48c6 2044
44959ee4 2045int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2046{
db0f35dd
TS		 2047 if (SSL_IS_TLS13(s)) {
2048 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2049 return 0;
db0f35dd 2050 }
cda6b998 2051
db0f35dd
TS		 2052 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2053 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2054 return 0;
2055 }
c519e89f 2056
db0f35dd 2057 s->renegotiate = 1;
0f113f3e 2058 s->new_session = 0;
c519e89f 2059
26a7d938 2060 return s->method->ssl_renegotiate(s);
0f113f3e 2061}
44959ee4 2062
6b0e9fac 2063int SSL_renegotiate_pending(SSL *s)
0f113f3e
MC		 2064{
2065 /*
2066 * becomes true when negotiation is requested; false again once a
2067 * handshake has finished
2068 */
2069 return (s->renegotiate != 0);
2070}
2071
2072long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2073{
2074 long l;
2075
2076 switch (cmd) {
2077 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2078 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2079 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2080 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2081 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2082 return l;
0f113f3e
MC		 2083
2084 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2085 s->msg_callback_arg = parg;
2086 return 1;
2087
0f113f3e
MC		 2088 case SSL_CTRL_MODE:
2089 return (s->mode |= larg);
2090 case SSL_CTRL_CLEAR_MODE:
2091 return (s->mode &= ~larg);
2092 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2093 return (long)s->max_cert_list;
0f113f3e 2094 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2095 if (larg < 0)
2096 return 0;
2097 l = (long)s->max_cert_list;
2098 s->max_cert_list = (size_t)larg;
2099 return l;
0f113f3e
MC		 2100 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2101 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2102 return 0;
2103 s->max_send_fragment = larg;
d102d9df
MC		 2104 if (s->max_send_fragment < s->split_send_fragment)
2105 s->split_send_fragment = s->max_send_fragment;
2106 return 1;
2107 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2108 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2109 return 0;
2110 s->split_send_fragment = larg;
0f113f3e 2111 return 1;
d102d9df
MC		 2112 case SSL_CTRL_SET_MAX_PIPELINES:
2113 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2114 return 0;
2115 s->max_pipelines = larg;
94777c9c
MC		 2116 if (larg > 1)
2117 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2118 return 1;
0f113f3e
MC		 2119 case SSL_CTRL_GET_RI_SUPPORT:
2120 if (s->s3)
2121 return s->s3->send_connection_binding;
2122 else
2123 return 0;
2124 case SSL_CTRL_CERT_FLAGS:
2125 return (s->cert->cert_flags |= larg);
2126 case SSL_CTRL_CLEAR_CERT_FLAGS:
2127 return (s->cert->cert_flags &= ~larg);
2128
2129 case SSL_CTRL_GET_RAW_CIPHERLIST:
2130 if (parg) {
76106e60 2131 if (s->s3->tmp.ciphers_raw == NULL)
0f113f3e 2132 return 0;
76106e60
DSH		 2133 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2134 return (int)s->s3->tmp.ciphers_rawlen;
e9fa092e
EK		 2135 } else {
2136 return TLS_CIPHER_LEN;
2137 }
c5364614 2138 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2139 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2140 return -1;
dccd20d1 2141 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2142 return 1;
2143 else
2144 return 0;
7946ab33 2145 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2146 return ssl_check_allowed_versions(larg, s->max_proto_version)
2147 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2148 &s->min_proto_version);
3edabd3c
CH		 2149 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2150 return s->min_proto_version;
7946ab33 2151 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2152 return ssl_check_allowed_versions(s->min_proto_version, larg)
2153 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2154 &s->max_proto_version);
3edabd3c
CH		 2155 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2156 return s->max_proto_version;
0f113f3e 2157 default:
26a7d938 2158 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2159 }
2160}
2161
2162long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2163{
2164 switch (cmd) {
2165 case SSL_CTRL_SET_MSG_CALLBACK:
2166 s->msg_callback = (void (*)
2167 (int write_p, int version, int content_type,
2168 const void *buf, size_t len, SSL *ssl,
2169 void *arg))(fp);
2170 return 1;
2171
2172 default:
26a7d938 2173 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2174 }
2175}
d3442bc7 2176
3c1d6bbc 2177LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2178{
2179 return ctx->sessions;
2180}
2181
2182long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2183{
2184 long l;
1fcb4e4d 2185 int i;
0f113f3e
MC		 2186 /* For some cases with ctx == NULL perform syntax checks */
2187 if (ctx == NULL) {
2188 switch (cmd) {
14536c8c 2189#ifndef OPENSSL_NO_EC
de4d764e
MC		 2190 case SSL_CTRL_SET_GROUPS_LIST:
2191 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2192#endif
2193 case SSL_CTRL_SET_SIGALGS_LIST:
2194 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2195 return tls1_set_sigalgs_list(NULL, parg, 0);
2196 default:
2197 return 0;
2198 }
2199 }
2200
2201 switch (cmd) {
2202 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2203 return ctx->read_ahead;
0f113f3e
MC		 2204 case SSL_CTRL_SET_READ_AHEAD:
2205 l = ctx->read_ahead;
2206 ctx->read_ahead = larg;
26a7d938 2207 return l;
0f113f3e
MC		 2208
2209 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2210 ctx->msg_callback_arg = parg;
2211 return 1;
2212
2213 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2214 return (long)ctx->max_cert_list;
0f113f3e 2215 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2216 if (larg < 0)
2217 return 0;
2218 l = (long)ctx->max_cert_list;
2219 ctx->max_cert_list = (size_t)larg;
2220 return l;
0f113f3e
MC		 2221
2222 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2223 if (larg < 0)
2224 return 0;
2225 l = (long)ctx->session_cache_size;
2226 ctx->session_cache_size = (size_t)larg;
2227 return l;
0f113f3e 2228 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2229 return (long)ctx->session_cache_size;
0f113f3e
MC		 2230 case SSL_CTRL_SET_SESS_CACHE_MODE:
2231 l = ctx->session_cache_mode;
2232 ctx->session_cache_mode = larg;
26a7d938 2233 return l;
0f113f3e 2234 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2235 return ctx->session_cache_mode;
0f113f3e
MC		 2236
2237 case SSL_CTRL_SESS_NUMBER:
26a7d938 2238 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2239 case SSL_CTRL_SESS_CONNECT:
1fcb4e4d
BK		 2240 return CRYPTO_atomic_read(&ctx->stats.sess_connect, &i, ctx->lock)
2241 ? i : 0;
0f113f3e 2242 case SSL_CTRL_SESS_CONNECT_GOOD:
1fcb4e4d
BK		 2243 return CRYPTO_atomic_read(&ctx->stats.sess_connect_good, &i, ctx->lock)
2244 ? i : 0;
0f113f3e 2245 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1fcb4e4d
BK		 2246 return CRYPTO_atomic_read(&ctx->stats.sess_connect_renegotiate, &i,
2247 ctx->lock)
2248 ? i : 0;
0f113f3e 2249 case SSL_CTRL_SESS_ACCEPT:
1fcb4e4d
BK		 2250 return CRYPTO_atomic_read(&ctx->stats.sess_accept, &i, ctx->lock)
2251 ? i : 0;
0f113f3e 2252 case SSL_CTRL_SESS_ACCEPT_GOOD:
1fcb4e4d
BK		 2253 return CRYPTO_atomic_read(&ctx->stats.sess_accept_good, &i, ctx->lock)
2254 ? i : 0;
0f113f3e 2255 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1fcb4e4d
BK		 2256 return CRYPTO_atomic_read(&ctx->stats.sess_accept_renegotiate, &i,
2257 ctx->lock)
2258 ? i : 0;
0f113f3e 2259 case SSL_CTRL_SESS_HIT:
1fcb4e4d
BK		 2260 return CRYPTO_atomic_read(&ctx->stats.sess_hit, &i, ctx->lock)
2261 ? i : 0;
0f113f3e 2262 case SSL_CTRL_SESS_CB_HIT:
1fcb4e4d
BK		 2263 return CRYPTO_atomic_read(&ctx->stats.sess_cb_hit, &i, ctx->lock)
2264 ? i : 0;
0f113f3e 2265 case SSL_CTRL_SESS_MISSES:
1fcb4e4d
BK		 2266 return CRYPTO_atomic_read(&ctx->stats.sess_miss, &i, ctx->lock)
2267 ? i : 0;
0f113f3e 2268 case SSL_CTRL_SESS_TIMEOUTS:
1fcb4e4d
BK		 2269 return CRYPTO_atomic_read(&ctx->stats.sess_timeout, &i, ctx->lock)
2270 ? i : 0;
0f113f3e 2271 case SSL_CTRL_SESS_CACHE_FULL:
1fcb4e4d
BK		 2272 return CRYPTO_atomic_read(&ctx->stats.sess_cache_full, &i, ctx->lock)
2273 ? i : 0;
0f113f3e
MC		 2274 case SSL_CTRL_MODE:
2275 return (ctx->mode |= larg);
2276 case SSL_CTRL_CLEAR_MODE:
2277 return (ctx->mode &= ~larg);
2278 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2279 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2280 return 0;
2281 ctx->max_send_fragment = larg;
d102d9df 2282 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2283 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2284 return 1;
d102d9df 2285 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2286 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2287 return 0;
2288 ctx->split_send_fragment = larg;
2289 return 1;
2290 case SSL_CTRL_SET_MAX_PIPELINES:
2291 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2292 return 0;
2293 ctx->max_pipelines = larg;
07077415 2294 return 1;
0f113f3e
MC		 2295 case SSL_CTRL_CERT_FLAGS:
2296 return (ctx->cert->cert_flags |= larg);
2297 case SSL_CTRL_CLEAR_CERT_FLAGS:
2298 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2299 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2300 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2301 && ssl_set_version_bound(ctx->method->version, (int)larg,
2302 &ctx->min_proto_version);
3edabd3c
CH		 2303 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2304 return ctx->min_proto_version;
7946ab33 2305 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2306 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2307 && ssl_set_version_bound(ctx->method->version, (int)larg,
2308 &ctx->max_proto_version);
3edabd3c
CH		 2309 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2310 return ctx->max_proto_version;
0f113f3e 2311 default:
26a7d938 2312 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2313 }
2314}
2315
2316long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2317{
2318 switch (cmd) {
2319 case SSL_CTRL_SET_MSG_CALLBACK:
2320 ctx->msg_callback = (void (*)
2321 (int write_p, int version, int content_type,
2322 const void *buf, size_t len, SSL *ssl,
2323 void *arg))(fp);
2324 return 1;
2325
2326 default:
26a7d938 2327 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2328 }
2329}
d3442bc7 2330
ccd86b68 2331int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2332{
90d9e49a
DSH		 2333 if (a->id > b->id)
2334 return 1;
2335 if (a->id < b->id)
2336 return -1;
2337 return 0;
0f113f3e
MC		 2338}
2339
2340int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2341 const SSL_CIPHER *const *bp)
2342{
90d9e49a
DSH		 2343 if ((*ap)->id > (*bp)->id)
2344 return 1;
2345 if ((*ap)->id < (*bp)->id)
2346 return -1;
2347 return 0;
0f113f3e 2348}
d02b48c6 2349
4f43d0e7 2350/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2351 * preference */
0821bcd4 2352STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2353{
2354 if (s != NULL) {
2355 if (s->cipher_list != NULL) {
26a7d938 2356 return s->cipher_list;
0f113f3e 2357 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2358 return s->ctx->cipher_list;
0f113f3e
MC		 2359 }
2360 }
26a7d938 2361 return NULL;
0f113f3e
MC		 2362}
2363
831eef2c
NM		 2364STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2365{
2366 if ((s == NULL) || (s->session == NULL) || !s->server)
2367 return NULL;
2368 return s->session->ciphers;
2369}
2370
8b8e5bed 2371STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2372{
2373 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2374 int i;
2375 ciphers = SSL_get_ciphers(s);
2376 if (!ciphers)
2377 return NULL;
2378 ssl_set_client_disabled(s);
2379 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2380 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2381 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2382 if (!sk)
2383 sk = sk_SSL_CIPHER_new_null();
2384 if (!sk)
2385 return NULL;
2386 if (!sk_SSL_CIPHER_push(sk, c)) {
2387 sk_SSL_CIPHER_free(sk);
2388 return NULL;
2389 }
2390 }
2391 }
2392 return sk;
2393}
8b8e5bed 2394
4f43d0e7 2395/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2396 * algorithm id */
f73e07cf 2397STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2398{
2399 if (s != NULL) {
2400 if (s->cipher_list_by_id != NULL) {
26a7d938 2401 return s->cipher_list_by_id;
0f113f3e 2402 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2403 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2404 }
2405 }
26a7d938 2406 return NULL;
0f113f3e 2407}
d02b48c6 2408
4f43d0e7 2409/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2410const char *SSL_get_cipher_list(const SSL *s, int n)
2411{
4a640fb6 2412 const SSL_CIPHER *c;
0f113f3e
MC		 2413 STACK_OF(SSL_CIPHER) *sk;
2414
2415 if (s == NULL)
26a7d938 2416 return NULL;
0f113f3e
MC		 2417 sk = SSL_get_ciphers(s);
2418 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2419 return NULL;
0f113f3e
MC		 2420 c = sk_SSL_CIPHER_value(sk, n);
2421 if (c == NULL)
26a7d938
K		 2422 return NULL;
2423 return c->name;
0f113f3e 2424}
d02b48c6 2425
9d5ac953
KY		 2426/** return a STACK of the ciphers available for the SSL_CTX and in order of
2427 * preference */
2428STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2429{
2430 if (ctx != NULL)
2431 return ctx->cipher_list;
2432 return NULL;
2433}
2434
25f923dd 2435/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2436int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2437{
2438 STACK_OF(SSL_CIPHER) *sk;
2439
2440 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2441 &ctx->cipher_list_by_id, str, ctx->cert);
2442 /*
2443 * ssl_create_cipher_list may return an empty stack if it was unable to
2444 * find a cipher matching the given rule string (for example if the rule
2445 * string specifies a cipher which has been disabled). This is not an
2446 * error as far as ssl_create_cipher_list is concerned, and hence
2447 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2448 */
2449 if (sk == NULL)
2450 return 0;
2451 else if (sk_SSL_CIPHER_num(sk) == 0) {
2452 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2453 return 0;
2454 }
2455 return 1;
2456}
d02b48c6 2457
4f43d0e7 2458/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2459int SSL_set_cipher_list(SSL *s, const char *str)
2460{
2461 STACK_OF(SSL_CIPHER) *sk;
2462
2463 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2464 &s->cipher_list_by_id, str, s->cert);
2465 /* see comment in SSL_CTX_set_cipher_list */
2466 if (sk == NULL)
2467 return 0;
2468 else if (sk_SSL_CIPHER_num(sk) == 0) {
2469 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2470 return 0;
2471 }
2472 return 1;
2473}
d02b48c6 2474
0f113f3e
MC		 2475char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2476{
2477 char *p;
2478 STACK_OF(SSL_CIPHER) *sk;
4a640fb6 2479 const SSL_CIPHER *c;
0f113f3e
MC		 2480 int i;
2481
2482 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
26a7d938 2483 return NULL;
0f113f3e
MC		 2484
2485 p = buf;
2486 sk = s->session->ciphers;
2487
2488 if (sk_SSL_CIPHER_num(sk) == 0)
2489 return NULL;
2490
2491 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2492 int n;
2493
2494 c = sk_SSL_CIPHER_value(sk, i);
2495 n = strlen(c->name);
2496 if (n + 1 > len) {
2497 if (p != buf)
2498 --p;
2499 *p = '\0';
2500 return buf;
2501 }
4cacc9d5 2502 strcpy(p, c->name);
0f113f3e
MC		 2503 p += n;
2504 *(p++) = ':';
2505 len -= n + 1;
2506 }
2507 p[-1] = '\0';
26a7d938 2508 return buf;
0f113f3e
MC		 2509}
2510
52b8dad8 2511/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2512 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2513 */
2514
f1fd4544 2515const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2516{
2517 if (type != TLSEXT_NAMETYPE_host_name)
2518 return NULL;
a13c20f6 2519
aff8c126
RS		 2520 return s->session && !s->ext.hostname ?
2521 s->session->ext.hostname : s->ext.hostname;
0f113f3e 2522}
ed3883d2 2523
f1fd4544 2524int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2525{
2526 if (s->session
aff8c126
RS		 2527 && (!s->ext.hostname ? s->session->
2528 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2529 return TLSEXT_NAMETYPE_host_name;
2530 return -1;
2531}
ee2ffc27 2532
0f113f3e
MC		 2533/*
2534 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2535 * expected that this function is called from the callback set by
0f113f3e
MC		 2536 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2537 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2538 * not included in the length. A byte string of length 0 is invalid. No byte
2539 * string may be truncated. The current, but experimental algorithm for
2540 * selecting the protocol is: 1) If the server doesn't support NPN then this
2541 * is indicated to the callback. In this case, the client application has to
2542 * abort the connection or have a default application level protocol. 2) If
2543 * the server supports NPN, but advertises an empty list then the client
f430ba31 2544 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2545 * fallback case was enacted. 3) Otherwise, the client finds the first
2546 * protocol in the server's list that it supports and selects this protocol.
2547 * This is because it's assumed that the server has better information about
2548 * which protocol a client should use. 4) If the client doesn't support any
2549 * of the server's advertised protocols, then this is treated the same as
2550 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2551 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2552 */
0f113f3e
MC		 2553int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2554 const unsigned char *server,
2555 unsigned int server_len,
a230b26e 2556 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2557{
2558 unsigned int i, j;
2559 const unsigned char *result;
2560 int status = OPENSSL_NPN_UNSUPPORTED;
2561
2562 /*
2563 * For each protocol in server preference order, see if we support it.
2564 */
2565 for (i = 0; i < server_len;) {
2566 for (j = 0; j < client_len;) {
2567 if (server[i] == client[j] &&
2568 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2569 /* We found a match */
2570 result = &server[i];
2571 status = OPENSSL_NPN_NEGOTIATED;
2572 goto found;
2573 }
2574 j += client[j];
2575 j++;
2576 }
2577 i += server[i];
2578 i++;
2579 }
2580
2581 /* There's no overlap between our protocols and the server's list. */
2582 result = client;
2583 status = OPENSSL_NPN_NO_OVERLAP;
2584
2585 found:
2586 *out = (unsigned char *)result + 1;
2587 *outlen = result[0];
2588 return status;
2589}
ee2ffc27 2590
e481f9b9 2591#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2592/*
2593 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2594 * client's requested protocol for this connection and returns 0. If the
2595 * client didn't request any protocol, then *data is set to NULL. Note that
2596 * the client can request any protocol it chooses. The value returned from
2597 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2598 * provided by the callback.
2599 */
0f113f3e
MC		 2600void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2601 unsigned *len)
2602{
aff8c126 2603 *data = s->ext.npn;
0f113f3e
MC		 2604 if (!*data) {
2605 *len = 0;
2606 } else {
aff8c126 2607 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2608 }
2609}
2610
2611/*
aff8c126 2612 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2613 * a TLS server needs a list of supported protocols for Next Protocol
2614 * Negotiation. The returned list must be in wire format. The list is
2615 * returned by setting |out| to point to it and |outlen| to its length. This
2616 * memory will not be modified, but one should assume that the SSL* keeps a
2617 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2618 * wishes to advertise. Otherwise, no such extension will be included in the
2619 * ServerHello.
2620 */
aff8c126 2621void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2622 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2623 void *arg)
0f113f3e 2624{
aff8c126
RS		 2625 ctx->ext.npn_advertised_cb = cb;
2626 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2627}
2628
2629/*
2630 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2631 * client needs to select a protocol from the server's provided list. |out|
2632 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2633 * The length of the protocol name must be written into |outlen|. The
2634 * server's advertised protocols are provided in |in| and |inlen|. The
2635 * callback can assume that |in| is syntactically valid. The client must
2636 * select a protocol. It is fatal to the connection if this callback returns
2637 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2638 */
aff8c126 2639void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2640 SSL_CTX_npn_select_cb_func cb,
aff8c126 2641 void *arg)
0f113f3e 2642{
aff8c126
RS		 2643 ctx->ext.npn_select_cb = cb;
2644 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2645}
e481f9b9 2646#endif
a398f821 2647
0f113f3e
MC		 2648/*
2649 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2650 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2651 * length-prefixed strings). Returns 0 on success.
2652 */
2653int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2654 unsigned int protos_len)
0f113f3e 2655{
aff8c126
RS		 2656 OPENSSL_free(ctx->ext.alpn);
2657 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2658 if (ctx->ext.alpn == NULL) {
72e9be3d 2659 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2660 return 1;
72e9be3d 2661 }
aff8c126 2662 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2663
2664 return 0;
2665}
2666
2667/*
2668 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2669 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2670 * length-prefixed strings). Returns 0 on success.
2671 */
2672int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2673 unsigned int protos_len)
0f113f3e 2674{
aff8c126
RS		 2675 OPENSSL_free(ssl->ext.alpn);
2676 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2677 if (ssl->ext.alpn == NULL) {
72e9be3d 2678 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2679 return 1;
72e9be3d 2680 }
aff8c126 2681 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2682
2683 return 0;
2684}
2685
2686/*
2687 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2688 * called during ClientHello processing in order to select an ALPN protocol
2689 * from the client's list of offered protocols.
2690 */
2691void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2692 SSL_CTX_alpn_select_cb_func cb,
2693 void *arg)
0f113f3e 2694{
aff8c126
RS		 2695 ctx->ext.alpn_select_cb = cb;
2696 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2697}
2698
2699/*
69687aa8
F		 2700 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2701 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2702 * (not including the leading length-prefix byte). If the server didn't
2703 * respond with a negotiated protocol then |*len| will be zero.
2704 */
6f017a8f 2705void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2706 unsigned int *len)
0f113f3e
MC		 2707{
2708 *data = NULL;
2709 if (ssl->s3)
2710 *data = ssl->s3->alpn_selected;
2711 if (*data == NULL)
2712 *len = 0;
2713 else
348240c6 2714 *len = (unsigned int)ssl->s3->alpn_selected_len;
0f113f3e
MC		 2715}
2716
74b4b494 2717int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2718 const char *label, size_t llen,
23cec1f4 2719 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2720 int use_context)
2721{
c8a18468 2722 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2723 return -1;
e0af0405 2724
0f113f3e 2725 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2726 llen, context,
2727 contextlen, use_context);
0f113f3e 2728}
e0af0405 2729
3c1d6bbc 2730static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2731{
bd5d27c1 2732 const unsigned char *session_id = a->session_id;
0f113f3e 2733 unsigned long l;
bd5d27c1
DB		 2734 unsigned char tmp_storage[4];
2735
2736 if (a->session_id_length < sizeof(tmp_storage)) {
2737 memset(tmp_storage, 0, sizeof(tmp_storage));
2738 memcpy(tmp_storage, a->session_id, a->session_id_length);
2739 session_id = tmp_storage;
2740 }
0f113f3e
MC		 2741
2742 l = (unsigned long)
bd5d27c1
DB		 2743 ((unsigned long)session_id[0]) |
2744 ((unsigned long)session_id[1] << 8L) |
2745 ((unsigned long)session_id[2] << 16L) |
2746 ((unsigned long)session_id[3] << 24L);
26a7d938 2747 return l;
0f113f3e
MC		 2748}
2749
2750/*
2751 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 2752 * coarser function than this one) is changed, ensure
0f113f3e
MC		 2753 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2754 * being able to construct an SSL_SESSION that will collide with any existing
2755 * session with a matching session ID.
2756 */
2757static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2758{
2759 if (a->ssl_version != b->ssl_version)
208fb891 2760 return 1;
0f113f3e 2761 if (a->session_id_length != b->session_id_length)
208fb891 2762 return 1;
26a7d938 2763 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 2764}
2765
2766/*
2767 * These wrapper functions should remain rather than redeclaring
d0fa136c 2768 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 2769 * variable. The reason is that the functions aren't static, they're exposed
2770 * via ssl.h.
2771 */
97b17195 2772
4ebb342f 2773SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 2774{
2775 SSL_CTX *ret = NULL;
2776
2777 if (meth == NULL) {
2778 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 2779 return NULL;
0f113f3e
MC		 2780 }
2781
0fc32b07
MC		 2782 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2783 return NULL;
7fa792d1 2784
0f113f3e
MC		 2785 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2786 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2787 goto err;
2788 }
b51bce94 2789 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 2790 if (ret == NULL)
2791 goto err;
2792
0f113f3e 2793 ret->method = meth;
7946ab33
KR		 2794 ret->min_proto_version = 0;
2795 ret->max_proto_version = 0;
0f113f3e
MC		 2796 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2797 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 2798 /* We take the system default. */
0f113f3e 2799 ret->session_timeout = meth->get_timeout();
0f113f3e 2800 ret->references = 1;
16203f7b
AG		 2801 ret->lock = CRYPTO_THREAD_lock_new();
2802 if (ret->lock == NULL) {
2803 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2804 OPENSSL_free(ret);
2805 return NULL;
2806 }
0f113f3e 2807 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 2808 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 2809 if ((ret->cert = ssl_cert_new()) == NULL)
2810 goto err;
2811
62d0577e 2812 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 2813 if (ret->sessions == NULL)
2814 goto err;
2815 ret->cert_store = X509_STORE_new();
2816 if (ret->cert_store == NULL)
2817 goto err;
ed29e82a
RP		 2818#ifndef OPENSSL_NO_CT
2819 ret->ctlog_store = CTLOG_STORE_new();
2820 if (ret->ctlog_store == NULL)
2821 goto err;
2822#endif
61986d32 2823 if (!ssl_create_cipher_list(ret->method,
a230b26e
EK		 2824 &ret->cipher_list, &ret->cipher_list_by_id,
2825 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2826 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 2827 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2828 goto err2;
2829 }
2830
2831 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 2832 if (ret->param == NULL)
0f113f3e
MC		 2833 goto err;
2834
2835 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2836 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2837 goto err2;
2838 }
2839 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2840 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2841 goto err2;
2842 }
2843
fa7c2637 2844 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 2845 goto err;
2846
25a807bc
F		 2847 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2848 goto err;
0f113f3e 2849
0f113f3e
MC		 2850 /* No compression for DTLS */
2851 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2852 ret->comp_methods = SSL_COMP_get_compression_methods();
2853
2854 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 2855 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 2856
4e2e1ec9 2857 /* Setup RFC5077 ticket keys */
aff8c126
RS		 2858 if ((RAND_bytes(ret->ext.tick_key_name,
2859 sizeof(ret->ext.tick_key_name)) <= 0)
2860 || (RAND_bytes(ret->ext.tick_hmac_key,
2861 sizeof(ret->ext.tick_hmac_key)) <= 0)
2862 || (RAND_bytes(ret->ext.tick_aes_key,
2863 sizeof(ret->ext.tick_aes_key)) <= 0))
0f113f3e 2864 ret->options |= SSL_OP_NO_TICKET;
6434abbf 2865
edc032b5 2866#ifndef OPENSSL_NO_SRP
61986d32 2867 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 2868 goto err;
edc032b5 2869#endif
4db9677b 2870#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 2871# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2872# define eng_strx(x) #x
2873# define eng_str(x) eng_strx(x)
2874 /* Use specific client engine automatically... ignore errors */
2875 {
2876 ENGINE *eng;
2877 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2878 if (!eng) {
2879 ERR_clear_error();
2880 ENGINE_load_builtin_engines();
2881 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2882 }
2883 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2884 ERR_clear_error();
2885 }
2886# endif
2887#endif
2888 /*
2889 * Default is to connect to non-RI servers. When RI is more widely
2890 * deployed might change this.
2891 */
2892 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 2893 /*
2894 * Disable compression by default to prevent CRIME. Applications can
2895 * re-enable compression by configuring
2896 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 2897 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
2898 * middlebox compatibility by default. This may be disabled by default in
2899 * a later OpenSSL version.
dc5744cb 2900 */
a5816a5a 2901 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 2902
aff8c126 2903 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 2904
bfa9a9af
MC		 2905 /*
2906 * Default max early data is a fully loaded single record. Could be split
2907 * across multiple records in practice
2908 */
2909 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2910
16203f7b 2911 return ret;
0f113f3e
MC		 2912 err:
2913 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2914 err2:
e0e920b1 2915 SSL_CTX_free(ret);
16203f7b 2916 return NULL;
0f113f3e 2917}
d02b48c6 2918
c5ebfcab 2919int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 2920{
16203f7b 2921 int i;
c5ebfcab 2922
2f545ae4 2923 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 2924 return 0;
2925
2926 REF_PRINT_COUNT("SSL_CTX", ctx);
2927 REF_ASSERT_ISNT(i < 2);
2928 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 2929}
2930
4f43d0e7 2931void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 2932{
2933 int i;
d02b48c6 2934
0f113f3e
MC		 2935 if (a == NULL)
2936 return;
d02b48c6 2937
2f545ae4 2938 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 2939 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 2940 if (i > 0)
2941 return;
f3f1cf84 2942 REF_ASSERT_ISNT(i < 0);
0f113f3e 2943
222561fe 2944 X509_VERIFY_PARAM_free(a->param);
919ba009 2945 dane_ctx_final(&a->dane);
0f113f3e
MC		 2946
2947 /*
2948 * Free internal session cache. However: the remove_cb() may reference
2949 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2950 * after the sessions were flushed.
2951 * As the ex_data handling routines might also touch the session cache,
2952 * the most secure solution seems to be: empty (flush) the cache, then
2953 * free ex_data, then finally free the cache.
2954 * (See ticket [openssl.org #212].)
2955 */
2956 if (a->sessions != NULL)
2957 SSL_CTX_flush_sessions(a, 0);
2958
2959 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 2960 lh_SSL_SESSION_free(a->sessions);
222561fe 2961 X509_STORE_free(a->cert_store);
ed29e82a
RP		 2962#ifndef OPENSSL_NO_CT
2963 CTLOG_STORE_free(a->ctlog_store);
2964#endif
25aaa98a
RS		 2965 sk_SSL_CIPHER_free(a->cipher_list);
2966 sk_SSL_CIPHER_free(a->cipher_list_by_id);
e0e920b1 2967 ssl_cert_free(a->cert);
fa7c2637 2968 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
222561fe 2969 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 2970 a->comp_methods = NULL;
e783bae2 2971#ifndef OPENSSL_NO_SRTP
25aaa98a 2972 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 2973#endif
edc032b5 2974#ifndef OPENSSL_NO_SRP
0f113f3e 2975 SSL_CTX_SRP_CTX_free(a);
edc032b5 2976#endif
bdfe932d 2977#ifndef OPENSSL_NO_ENGINE
7c96dbcd 2978 ENGINE_finish(a->client_cert_engine);
ddac1974 2979#endif
8671b898 2980
e481f9b9 2981#ifndef OPENSSL_NO_EC
aff8c126
RS		 2982 OPENSSL_free(a->ext.ecpointformats);
2983 OPENSSL_free(a->ext.supportedgroups);
8671b898 2984#endif
aff8c126 2985 OPENSSL_free(a->ext.alpn);
8671b898 2986
16203f7b
AG		 2987 CRYPTO_THREAD_lock_free(a->lock);
2988
0f113f3e
MC		 2989 OPENSSL_free(a);
2990}
d02b48c6 2991
3ae76679 2992void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 2993{
2994 ctx->default_passwd_callback = cb;
2995}
2996
2997void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2998{
2999 ctx->default_passwd_callback_userdata = u;
3000}
3001
0c452abc
CH		 3002pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3003{
3004 return ctx->default_passwd_callback;
3005}
3006
3007void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3008{
3009 return ctx->default_passwd_callback_userdata;
3010}
3011
a974e64a
MC		 3012void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3013{
3014 s->default_passwd_callback = cb;
3015}
3016
3017void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3018{
3019 s->default_passwd_callback_userdata = u;
3020}
3021
0c452abc
CH		 3022pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3023{
3024 return s->default_passwd_callback;
3025}
3026
3027void *SSL_get_default_passwd_cb_userdata(SSL *s)
3028{
3029 return s->default_passwd_callback_userdata;
3030}
3031
0f113f3e
MC		 3032void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3033 int (*cb) (X509_STORE_CTX *, void *),
3034 void *arg)
3035{
3036 ctx->app_verify_callback = cb;
3037 ctx->app_verify_arg = arg;
3038}
3039
3040void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3041 int (*cb) (int, X509_STORE_CTX *))
3042{
3043 ctx->verify_mode = mode;
3044 ctx->default_verify_callback = cb;
3045}
3046
3047void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3048{
3049 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3050}
3051
a230b26e 3052void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3053{
3054 ssl_cert_set_cert_cb(c->cert, cb, arg);
3055}
3056
3057void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3058{
3059 ssl_cert_set_cert_cb(s->cert, cb, arg);
3060}
18d71588 3061
2cf28d61 3062void ssl_set_masks(SSL *s)
0f113f3e 3063{
6383d316 3064 CERT *c = s->cert;
f7d53487 3065 uint32_t *pvalid = s->s3->tmp.valid_flags;
bc71f910 3066 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3067 unsigned long mask_k, mask_a;
10bf4fc2 3068#ifndef OPENSSL_NO_EC
361a1191 3069 int have_ecc_cert, ecdsa_ok;
14536c8c 3070#endif
0f113f3e
MC		 3071 if (c == NULL)
3072 return;
d02b48c6 3073
bc36ee62 3074#ifndef OPENSSL_NO_DH
0f113f3e 3075 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3076#else
361a1191 3077 dh_tmp = 0;
d02b48c6
RE		 3078#endif
3079
d0ff28f8 3080 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3081 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3082 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3083#ifndef OPENSSL_NO_EC
6383d316 3084 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3085#endif
0f113f3e
MC		 3086 mask_k = 0;
3087 mask_a = 0;
0e1dba93 3088
d02b48c6 3089#ifdef CIPHER_DEBUG
b7557ccf
AG		 3090 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3091 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e
MC		 3092#endif
3093
2a9b9654 3094#ifndef OPENSSL_NO_GOST
4020c0b3 3095 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3096 mask_k |= SSL_kGOST;
3097 mask_a |= SSL_aGOST12;
3098 }
4020c0b3 3099 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3100 mask_k |= SSL_kGOST;
3101 mask_a |= SSL_aGOST12;
3102 }
4020c0b3 3103 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3104 mask_k |= SSL_kGOST;
3105 mask_a |= SSL_aGOST01;
3106 }
2a9b9654 3107#endif
0f113f3e 3108
361a1191 3109 if (rsa_enc)
0f113f3e 3110 mask_k |= SSL_kRSA;
d02b48c6 3111
0f113f3e
MC		 3112 if (dh_tmp)
3113 mask_k |= SSL_kDHE;
d02b48c6 3114
6aaa29fb
DSH		 3115 /*
3116 * If we only have an RSA-PSS certificate allow RSA authentication
3117 * if TLS 1.2 and peer supports it.
3118 */
3119
3120 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3121 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3122 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3123 mask_a |= SSL_aRSA;
d02b48c6 3124
0f113f3e
MC		 3125 if (dsa_sign) {
3126 mask_a |= SSL_aDSS;
0f113f3e 3127 }
d02b48c6 3128
0f113f3e 3129 mask_a |= SSL_aNULL;
d02b48c6 3130
0f113f3e
MC		 3131 /*
3132 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3133 * depending on the key usage extension.
3134 */
14536c8c 3135#ifndef OPENSSL_NO_EC
0f113f3e 3136 if (have_ecc_cert) {
a8d8e06b 3137 uint32_t ex_kusage;
4020c0b3 3138 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3139 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3140 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3141 ecdsa_ok = 0;
c7c46256 3142 if (ecdsa_ok)
0f113f3e 3143 mask_a |= SSL_aECDSA;
0f113f3e 3144 }
b2021556
DSH		 3145 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3146 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3147 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3148 && TLS1_get_version(s) == TLS1_2_VERSION)
3149 mask_a |= SSL_aECDSA;
14536c8c 3150#endif
ea262260 3151
10bf4fc2 3152#ifndef OPENSSL_NO_EC
fe6ef247 3153 mask_k |= SSL_kECDHE;
ea262260 3154#endif
ddac1974
NL		 3155
3156#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3157 mask_k |= SSL_kPSK;
3158 mask_a |= SSL_aPSK;
526f94ad
DSH		 3159 if (mask_k & SSL_kRSA)
3160 mask_k |= SSL_kRSAPSK;
3161 if (mask_k & SSL_kDHE)
3162 mask_k |= SSL_kDHEPSK;
3163 if (mask_k & SSL_kECDHE)
3164 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3165#endif
3166
4d69f9e6
DSH		 3167 s->s3->tmp.mask_k = mask_k;
3168 s->s3->tmp.mask_a = mask_a;
0f113f3e 3169}
d02b48c6 3170
ef236ec3
DSH		 3171#ifndef OPENSSL_NO_EC
3172
a2f9200f 3173int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3174{
ce0c1f2b 3175 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3176 /* key usage, if present, must allow signing */
ce0c1f2b 3177 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3178 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3179 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3180 return 0;
3181 }
3182 }
0f113f3e
MC		 3183 return 1; /* all checks are ok */
3184}
ea262260 3185
ef236ec3
DSH		 3186#endif
3187
a398f821 3188int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3189 size_t *serverinfo_length)
3190{
a497cf25 3191 CERT_PKEY *cpk = s->s3->tmp.cert;
0f113f3e
MC		 3192 *serverinfo_length = 0;
3193
a497cf25 3194 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3195 return 0;
3196
a497cf25
DSH		 3197 *serverinfo = cpk->serverinfo;
3198 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3199 return 1;
3200}
0f113f3e
MC		 3201
3202void ssl_update_cache(SSL *s, int mode)
3203{
3204 int i;
3205
3206 /*
3207 * If the session_id_length is 0, we are not supposed to cache it, and it
3208 * would be rather hard to do anyway :-)
3209 */
3210 if (s->session->session_id_length == 0)
3211 return;
3212
3213 i = s->session_ctx->session_cache_mode;
5d61491c
MC		 3214 if ((i & mode) != 0
3215 && (!s->hit || SSL_IS_TLS13(s))
3216 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
0f113f3e 3217 || SSL_CTX_add_session(s->session_ctx, s->session))
5d61491c 3218 && s->session_ctx->new_session_cb != NULL) {
16203f7b 3219 SSL_SESSION_up_ref(s->session);
0f113f3e
MC		 3220 if (!s->session_ctx->new_session_cb(s, s->session))
3221 SSL_SESSION_free(s->session);
3222 }
3223
3224 /* auto flush every 255 connections */
3225 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
1fcb4e4d
BK		 3226 int *stat, val;
3227 if (mode & SSL_SESS_CACHE_CLIENT)
3228 stat = &s->session_ctx->stats.sess_connect_good;
3229 else
3230 stat = &s->session_ctx->stats.sess_accept_good;
3231 if (CRYPTO_atomic_read(stat, &val, s->session_ctx->lock)
3232 && (val & 0xff) == 0xff)
0f113f3e 3233 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3234 }
3235}
d02b48c6 3236
ba168244 3237const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
0f113f3e
MC		 3238{
3239 return ctx->method;
3240}
ba168244 3241
4ebb342f 3242const SSL_METHOD *SSL_get_ssl_method(SSL *s)
0f113f3e 3243{
26a7d938 3244 return s->method;
0f113f3e 3245}
d02b48c6 3246
4ebb342f 3247int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3248{
0f113f3e
MC		 3249 int ret = 1;
3250
3251 if (s->method != meth) {
919ba009 3252 const SSL_METHOD *sm = s->method;
a230b26e 3253 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3254
919ba009 3255 if (sm->version == meth->version)
0f113f3e
MC		 3256 s->method = meth;
3257 else {
919ba009 3258 sm->ssl_free(s);
0f113f3e
MC		 3259 s->method = meth;
3260 ret = s->method->ssl_new(s);
3261 }
3262
919ba009 3263 if (hf == sm->ssl_connect)
0f113f3e 3264 s->handshake_func = meth->ssl_connect;
919ba009 3265 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3266 s->handshake_func = meth->ssl_accept;
3267 }
26a7d938 3268 return ret;
0f113f3e
MC		 3269}
3270
3271int SSL_get_error(const SSL *s, int i)
3272{
3273 int reason;
3274 unsigned long l;
3275 BIO *bio;
3276
3277 if (i > 0)
26a7d938 3278 return SSL_ERROR_NONE;
0f113f3e
MC		 3279
3280 /*
3281 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3282 * where we do encode the error
3283 */
3284 if ((l = ERR_peek_error()) != 0) {
3285 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3286 return SSL_ERROR_SYSCALL;
0f113f3e 3287 else
26a7d938 3288 return SSL_ERROR_SSL;
0f113f3e
MC		 3289 }
3290
8051ab2b
MC		 3291 if (SSL_want_read(s)) {
3292 bio = SSL_get_rbio(s);
3293 if (BIO_should_read(bio))
26a7d938 3294 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3295 else if (BIO_should_write(bio))
3296 /*
3297 * This one doesn't make too much sense ... We never try to write
3298 * to the rbio, and an application program where rbio and wbio
3299 * are separate couldn't even know what it should wait for.
3300 * However if we ever set s->rwstate incorrectly (so that we have
3301 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3302 * wbio *are* the same, this test works around that bug; so it
3303 * might be safer to keep it.
3304 */
26a7d938 3305 return SSL_ERROR_WANT_WRITE;
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; /* unknown */
0f113f3e 3314 }
8051ab2b 3315 }
0f113f3e 3316
8051ab2b 3317 if (SSL_want_write(s)) {
69687aa8 3318 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3319 bio = s->wbio;
3320 if (BIO_should_write(bio))
26a7d938 3321 return SSL_ERROR_WANT_WRITE;
8051ab2b 3322 else if (BIO_should_read(bio))
2e7dc7cd 3323 /*
8051ab2b 3324 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3325 */
26a7d938 3326 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3327 else if (BIO_should_io_special(bio)) {
3328 reason = BIO_get_retry_reason(bio);
3329 if (reason == BIO_RR_CONNECT)
26a7d938 3330 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3331 else if (reason == BIO_RR_ACCEPT)
26a7d938 3332 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3333 else
26a7d938 3334 return SSL_ERROR_SYSCALL;
0f113f3e 3335 }
07bbc92c 3336 }
6b1bb98f 3337 if (SSL_want_x509_lookup(s))
26a7d938 3338 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3339 if (SSL_want_async(s))
8051ab2b 3340 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3341 if (SSL_want_async_job(s))
8051ab2b 3342 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3343 if (SSL_want_client_hello_cb(s))
3344 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3345
3346 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3347 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3348 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3349
26a7d938 3350 return SSL_ERROR_SYSCALL;
0f113f3e 3351}
d02b48c6 3352
add2f5ca
MC		 3353static int ssl_do_handshake_intern(void *vargs)
3354{
3355 struct ssl_async_args *args;
3356 SSL *s;
3357
3358 args = (struct ssl_async_args *)vargs;
3359 s = args->s;
3360
3361 return s->handshake_func(s);
3362}
3363
4f43d0e7 3364int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3365{
3366 int ret = 1;
3367
3368 if (s->handshake_func == NULL) {
3369 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3370 return -1;
0f113f3e
MC		 3371 }
3372
3eaa4170 3373 ossl_statem_check_finish_init(s, -1);
49e7fe12 3374
c7f47786 3375 s->method->ssl_renegotiate_check(s, 0);
0f113f3e 3376
190b9a03
PY		 3377 if (SSL_is_server(s)) {
3378 /* clear SNI settings at server-side */
3379 OPENSSL_free(s->ext.hostname);
3380 s->ext.hostname = NULL;
3381 }
3382
0f113f3e 3383 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3384 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3385 struct ssl_async_args args;
3386
3387 args.s = s;
3388
7fecbf6f 3389 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3390 } else {
3391 ret = s->handshake_func(s);
3392 }
0f113f3e 3393 }
add2f5ca 3394 return ret;
0f113f3e
MC		 3395}
3396
4f43d0e7 3397void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3398{
3399 s->server = 1;
3400 s->shutdown = 0;
fe3a3291 3401 ossl_statem_clear(s);
0f113f3e 3402 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3403 clear_ciphers(s);
0f113f3e 3404}
d02b48c6 3405
4f43d0e7 3406void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3407{
3408 s->server = 0;
3409 s->shutdown = 0;
fe3a3291 3410 ossl_statem_clear(s);
0f113f3e 3411 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3412 clear_ciphers(s);
0f113f3e 3413}
d02b48c6 3414
4f43d0e7 3415int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3416{
3417 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3418 return 0;
0f113f3e 3419}
d02b48c6 3420
41a15c4f 3421int ssl_undefined_void_function(void)
0f113f3e
MC		 3422{
3423 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3424 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3425 return 0;
0f113f3e 3426}
41a15c4f 3427
0821bcd4 3428int ssl_undefined_const_function(const SSL *s)
0f113f3e 3429{
26a7d938 3430 return 0;
0f113f3e 3431}
0821bcd4 3432
2b8fa1d5 3433const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3434{
3435 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3436 return NULL;
0f113f3e 3437}
d02b48c6 3438
3eb2aff4 3439const char *ssl_protocol_to_string(int version)
7d650072 3440{
2abacef1
MC		 3441 switch(version)
3442 {
3443 case TLS1_3_VERSION:
582a17d6 3444 return "TLSv1.3";
2abacef1
MC		 3445
3446 case TLS1_2_VERSION:
7d650072 3447 return "TLSv1.2";
2abacef1
MC		 3448
3449 case TLS1_1_VERSION:
7d650072 3450 return "TLSv1.1";
2abacef1
MC		 3451
3452 case TLS1_VERSION:
ee3a6c64 3453 return "TLSv1";
2abacef1
MC		 3454
3455 case SSL3_VERSION:
7d650072 3456 return "SSLv3";
2abacef1
MC		 3457
3458 case DTLS1_BAD_VER:
7d650072 3459 return "DTLSv0.9";
2abacef1
MC		 3460
3461 case DTLS1_VERSION:
7d650072 3462 return "DTLSv1";
2abacef1
MC		 3463
3464 case DTLS1_2_VERSION:
7d650072 3465 return "DTLSv1.2";
2abacef1
MC		 3466
3467 default:
3468 return "unknown";
3469 }
0f113f3e 3470}
d02b48c6 3471
7d650072
KR		 3472const char *SSL_get_version(const SSL *s)
3473{
3eb2aff4 3474 return ssl_protocol_to_string(s->version);
7d650072
KR		 3475}
3476
4f43d0e7 3477SSL *SSL_dup(SSL *s)
0f113f3e
MC		 3478{
3479 STACK_OF(X509_NAME) *sk;
3480 X509_NAME *xn;
3481 SSL *ret;
3482 int i;
3483
919ba009
VD		 3484 /* If we're not quiescent, just up_ref! */
3485 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3486 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3487 return s;
3488 }
3489
3490 /*
3491 * Otherwise, copy configuration state, and session if set.
3492 */
0f113f3e 3493 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3494 return NULL;
0f113f3e 3495
0f113f3e 3496 if (s->session != NULL) {
919ba009
VD		 3497 /*
3498 * Arranges to share the same session via up_ref. This "copies"
3499 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3500 */
61986d32 3501 if (!SSL_copy_session_id(ret, s))
17dd65e6 3502 goto err;
0f113f3e
MC		 3503 } else {
3504 /*
3505 * No session has been established yet, so we have to expect that
3506 * s->cert or ret->cert will be changed later -- they should not both
3507 * point to the same object, and thus we can't use
3508 * SSL_copy_session_id.
3509 */
919ba009
VD		 3510 if (!SSL_set_ssl_method(ret, s->method))
3511 goto err;
0f113f3e
MC		 3512
3513 if (s->cert != NULL) {
e0e920b1 3514 ssl_cert_free(ret->cert);
0f113f3e
MC		 3515 ret->cert = ssl_cert_dup(s->cert);
3516 if (ret->cert == NULL)
3517 goto err;
3518 }
3519
348240c6
MC		 3520 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3521 (int)s->sid_ctx_length))
69f68237 3522 goto err;
0f113f3e
MC		 3523 }
3524
9f6b22b8
VD		 3525 if (!ssl_dane_dup(ret, s))
3526 goto err;
919ba009 3527 ret->version = s->version;
0f113f3e
MC		 3528 ret->options = s->options;
3529 ret->mode = s->mode;
3530 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3531 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3532 ret->msg_callback = s->msg_callback;
3533 ret->msg_callback_arg = s->msg_callback_arg;
3534 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3535 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3536 ret->generate_session_id = s->generate_session_id;
3537
3538 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3539
0f113f3e
MC		 3540 /* copy app data, a little dangerous perhaps */
3541 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3542 goto err;
3543
3544 /* setup rbio, and wbio */
3545 if (s->rbio != NULL) {
3546 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3547 goto err;
3548 }
3549 if (s->wbio != NULL) {
3550 if (s->wbio != s->rbio) {
3551 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3552 goto err;
65e2d672
MC		 3553 } else {
3554 BIO_up_ref(ret->rbio);
0f113f3e 3555 ret->wbio = ret->rbio;
65e2d672 3556 }
0f113f3e 3557 }
919ba009 3558
0f113f3e 3559 ret->server = s->server;
919ba009
VD		 3560 if (s->handshake_func) {
3561 if (s->server)
3562 SSL_set_accept_state(ret);
3563 else
3564 SSL_set_connect_state(ret);
3565 }
0f113f3e 3566 ret->shutdown = s->shutdown;
0f113f3e
MC		 3567 ret->hit = s->hit;
3568
a974e64a
MC		 3569 ret->default_passwd_callback = s->default_passwd_callback;
3570 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3571
0f113f3e
MC		 3572 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3573
3574 /* dup the cipher_list and cipher_list_by_id stacks */
3575 if (s->cipher_list != NULL) {
3576 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3577 goto err;
3578 }
3579 if (s->cipher_list_by_id != NULL)
3580 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3581 == NULL)
3582 goto err;
3583
3584 /* Dup the client_CA list */
fa7c2637
DSH		 3585 if (s->ca_names != NULL) {
3586 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
0f113f3e 3587 goto err;
fa7c2637 3588 ret->ca_names = sk;
0f113f3e
MC		 3589 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3590 xn = sk_X509_NAME_value(sk, i);
3591 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3592 X509_NAME_free(xn);
3593 goto err;
3594 }
3595 }
3596 }
66696478 3597 return ret;
0f113f3e 3598
0f113f3e 3599 err:
66696478
RS		 3600 SSL_free(ret);
3601 return NULL;
0f113f3e 3602}
d02b48c6 3603
4f43d0e7 3604void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3605{
3606 if (s->enc_read_ctx != NULL) {
846ec07d 3607 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3608 s->enc_read_ctx = NULL;
3609 }
3610 if (s->enc_write_ctx != NULL) {
846ec07d 3611 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3612 s->enc_write_ctx = NULL;
3613 }
09b6c2ef 3614#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3615 COMP_CTX_free(s->expand);
3616 s->expand = NULL;
3617 COMP_CTX_free(s->compress);
3618 s->compress = NULL;
0f113f3e
MC		 3619#endif
3620}
d02b48c6 3621
0821bcd4 3622X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3623{
3624 if (s->cert != NULL)
26a7d938 3625 return s->cert->key->x509;
0f113f3e 3626 else
26a7d938 3627 return NULL;
0f113f3e 3628}
d02b48c6 3629
a25f9adc 3630EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3631{
3632 if (s->cert != NULL)
26a7d938 3633 return s->cert->key->privatekey;
0f113f3e 3634 else
26a7d938 3635 return NULL;
0f113f3e 3636}
d02b48c6 3637
a25f9adc 3638X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 3639{
3640 if (ctx->cert != NULL)
3641 return ctx->cert->key->x509;
3642 else
3643 return NULL;
3644}
a25f9adc
DSH		 3645
3646EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 3647{
3648 if (ctx->cert != NULL)
3649 return ctx->cert->key->privatekey;
3650 else
3651 return NULL;
3652}
a25f9adc 3653
babb3798 3654const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 3655{
3656 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 3657 return s->session->cipher;
3658 return NULL;
0f113f3e
MC		 3659}
3660
0aed6e44
BK		 3661const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3662{
3663 return s->s3->tmp.new_cipher;
3664}
3665
377dcdba 3666const COMP_METHOD *SSL_get_current_compression(SSL *s)
0f113f3e 3667{
9a555706
RS		 3668#ifndef OPENSSL_NO_COMP
3669 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3670#else
3671 return NULL;
3672#endif
0f113f3e 3673}
377dcdba
RL		 3674
3675const COMP_METHOD *SSL_get_current_expansion(SSL *s)
0f113f3e 3676{
9a555706
RS		 3677#ifndef OPENSSL_NO_COMP
3678 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3679#else
3680 return NULL;
0f113f3e 3681#endif
9a555706 3682}
0f113f3e 3683
46417569 3684int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 3685{
3686 BIO *bbio;
3687
2e7dc7cd
MC		 3688 if (s->bbio != NULL) {
3689 /* Already buffered. */
3690 return 1;
0f113f3e 3691 }
46417569 3692
2e7dc7cd
MC		 3693 bbio = BIO_new(BIO_f_buffer());
3694 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3695 BIO_free(bbio);
0f113f3e 3696 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 3697 return 0;
0f113f3e 3698 }
2e7dc7cd
MC		 3699 s->bbio = bbio;
3700 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 3701
3702 return 1;
0f113f3e 3703}
413c4f45 3704
b77f3ed1 3705int ssl_free_wbio_buffer(SSL *s)
0f113f3e 3706{
62adbcee 3707 /* callers ensure s is never null */
0f113f3e 3708 if (s->bbio == NULL)
b77f3ed1 3709 return 1;
0f113f3e 3710
2e7dc7cd 3711 s->wbio = BIO_pop(s->wbio);
b77f3ed1
MC		 3712 if (!ossl_assert(s->wbio != NULL))
3713 return 0;
0f113f3e
MC		 3714 BIO_free(s->bbio);
3715 s->bbio = NULL;
b77f3ed1
MC		 3716
3717 return 1;
0f113f3e
MC		 3718}
3719
3720void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3721{
3722 ctx->quiet_shutdown = mode;
3723}
58964a49 3724
0821bcd4 3725int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 3726{
26a7d938 3727 return ctx->quiet_shutdown;
0f113f3e 3728}
58964a49 3729
0f113f3e
MC		 3730void SSL_set_quiet_shutdown(SSL *s, int mode)
3731{
3732 s->quiet_shutdown = mode;
3733}
58964a49 3734
0821bcd4 3735int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 3736{
26a7d938 3737 return s->quiet_shutdown;
0f113f3e 3738}
58964a49 3739
0f113f3e
MC		 3740void SSL_set_shutdown(SSL *s, int mode)
3741{
3742 s->shutdown = mode;
3743}
58964a49 3744
0821bcd4 3745int SSL_get_shutdown(const SSL *s)
0f113f3e 3746{
6546e9b2 3747 return s->shutdown;
0f113f3e 3748}
58964a49 3749
0821bcd4 3750int SSL_version(const SSL *s)
0f113f3e 3751{
6546e9b2
AG		 3752 return s->version;
3753}
3754
3755int SSL_client_version(const SSL *s)
3756{
3757 return s->client_version;
0f113f3e 3758}
58964a49 3759
0821bcd4 3760SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 3761{
6546e9b2 3762 return ssl->ctx;
0f113f3e
MC		 3763}
3764
3765SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3766{
24a0d393 3767 CERT *new_cert;
0f113f3e
MC		 3768 if (ssl->ctx == ctx)
3769 return ssl->ctx;
0f113f3e 3770 if (ctx == NULL)
222da979 3771 ctx = ssl->session_ctx;
24a0d393
KR		 3772 new_cert = ssl_cert_dup(ctx->cert);
3773 if (new_cert == NULL) {
3774 return NULL;
0f113f3e 3775 }
21181889
MC		 3776
3777 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3778 ssl_cert_free(new_cert);
3779 return NULL;
3780 }
3781
24a0d393
KR		 3782 ssl_cert_free(ssl->cert);
3783 ssl->cert = new_cert;
0f113f3e
MC		 3784
3785 /*
3786 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3787 * so setter APIs must prevent invalid lengths from entering the system.
3788 */
380a522f
MC		 3789 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3790 return NULL;
0f113f3e
MC		 3791
3792 /*
3793 * If the session ID context matches that of the parent SSL_CTX,
3794 * inherit it from the new SSL_CTX as well. If however the context does
3795 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3796 * leave it unchanged.
3797 */
3798 if ((ssl->ctx != NULL) &&
3799 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3800 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3801 ssl->sid_ctx_length = ctx->sid_ctx_length;
3802 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3803 }
3804
16203f7b 3805 SSL_CTX_up_ref(ctx);
a230b26e 3806 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 3807 ssl->ctx = ctx;
3808
16203f7b 3809 return ssl->ctx;
0f113f3e 3810}
ed3883d2 3811
4f43d0e7 3812int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 3813{
26a7d938 3814 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 3815}
58964a49 3816
d84a7b20
MC		 3817int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3818{
3819 X509_LOOKUP *lookup;
3820
3821 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3822 if (lookup == NULL)
3823 return 0;
3824 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3825
3826 /* Clear any errors if the default directory does not exist */
3827 ERR_clear_error();
3828
3829 return 1;
3830}
3831
3832int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3833{
3834 X509_LOOKUP *lookup;
3835
3836 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3837 if (lookup == NULL)
3838 return 0;
3839
3840 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3841
3842 /* Clear any errors if the default file does not exist */
3843 ERR_clear_error();
3844
3845 return 1;
3846}
3847
303c0028 3848int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 3849 const char *CApath)
3850{
26a7d938 3851 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
0f113f3e 3852}
58964a49 3853
45d87a1f 3854void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 3855 void (*cb) (const SSL *ssl, int type, int val))
3856{
3857 ssl->info_callback = cb;
3858}
3859
3860/*
3861 * One compiler (Diab DCC) doesn't like argument names in returned function
3862 * pointer.
3863 */
3864void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3865 int /* type */ ,
3866 int /* val */ ) {
3867 return ssl->info_callback;
3868}
58964a49 3869
0f113f3e
MC		 3870void SSL_set_verify_result(SSL *ssl, long arg)
3871{
3872 ssl->verify_result = arg;
3873}
58964a49 3874
0821bcd4 3875long SSL_get_verify_result(const SSL *ssl)
0f113f3e 3876{
26a7d938 3877 return ssl->verify_result;
0f113f3e
MC		 3878}
3879
d9f1c639 3880size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3881{
6b8f5d0d 3882 if (outlen == 0)
858618e7
NM		 3883 return sizeof(ssl->s3->client_random);
3884 if (outlen > sizeof(ssl->s3->client_random))
3885 outlen = sizeof(ssl->s3->client_random);
3886 memcpy(out, ssl->s3->client_random, outlen);
d9f1c639 3887 return outlen;
858618e7
NM		 3888}
3889
d9f1c639 3890size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3891{
6b8f5d0d 3892 if (outlen == 0)
858618e7
NM		 3893 return sizeof(ssl->s3->server_random);
3894 if (outlen > sizeof(ssl->s3->server_random))
3895 outlen = sizeof(ssl->s3->server_random);
3896 memcpy(out, ssl->s3->server_random, outlen);
d9f1c639 3897 return outlen;
858618e7
NM		 3898}
3899
d9f1c639 3900size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 3901 unsigned char *out, size_t outlen)
858618e7 3902{
d9f1c639
MC		 3903 if (outlen == 0)
3904 return session->master_key_length;
8c1a5343 3905 if (outlen > session->master_key_length)
858618e7
NM		 3906 outlen = session->master_key_length;
3907 memcpy(out, session->master_key, outlen);
d9f1c639 3908 return outlen;
858618e7
NM		 3909}
3910
725b0f1e 3911int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 3912 size_t len)
3913{
3914 if (len > sizeof(sess->master_key))
3915 return 0;
3916
3917 memcpy(sess->master_key, in, len);
3918 sess->master_key_length = len;
911d63f2
MC		 3919 return 1;
3920}
3921
3922
0f113f3e
MC		 3923int SSL_set_ex_data(SSL *s, int idx, void *arg)
3924{
26a7d938 3925 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 3926}
3927
3928void *SSL_get_ex_data(const SSL *s, int idx)
3929{
26a7d938 3930 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 3931}
3932
0f113f3e
MC		 3933int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3934{
26a7d938 3935 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 3936}
3937
3938void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3939{
26a7d938 3940 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 3941}
58964a49 3942
0821bcd4 3943X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 3944{
26a7d938 3945 return ctx->cert_store;
0f113f3e 3946}
413c4f45 3947
0f113f3e
MC		 3948void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3949{
222561fe 3950 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 3951 ctx->cert_store = store;
3952}
413c4f45 3953
b50052db
TS		 3954void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3955{
3956 if (store != NULL)
3957 X509_STORE_up_ref(store);
3958 SSL_CTX_set_cert_store(ctx, store);
3959}
3960
0821bcd4 3961int SSL_want(const SSL *s)
0f113f3e 3962{
26a7d938 3963 return s->rwstate;
0f113f3e 3964}
413c4f45 3965
0f113f3e 3966/**
4f43d0e7
BL		 3967 * \brief Set the callback for generating temporary DH keys.
3968 * \param ctx the SSL context.
3969 * \param dh the callback
3970 */
3971
bc36ee62 3972#ifndef OPENSSL_NO_DH
0f113f3e
MC		 3973void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3974 DH *(*dh) (SSL *ssl, int is_export,
3975 int keylength))
3976{
3977 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3978}
f8c3c05d 3979
0f113f3e
MC		 3980void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3981 int keylength))
3982{
3983 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3984}
79df9d62 3985#endif
15d21c2d 3986
ddac1974
NL		 3987#ifndef OPENSSL_NO_PSK
3988int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 3989{
3990 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 3991 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 3992 return 0;
3993 }
df6da24b 3994 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 3995 if (identity_hint != NULL) {
7644a9ae 3996 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 3997 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 3998 return 0;
3999 } else
df6da24b 4000 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4001 return 1;
4002}
ddac1974
NL		 4003
4004int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4005{
4006 if (s == NULL)
4007 return 0;
4008
0f113f3e
MC		 4009 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4010 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4011 return 0;
4012 }
df6da24b 4013 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4014 if (identity_hint != NULL) {
7644a9ae 4015 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4016 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4017 return 0;
4018 } else
df6da24b 4019 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4020 return 1;
4021}
ddac1974
NL		 4022
4023const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4024{
4025 if (s == NULL || s->session == NULL)
4026 return NULL;
26a7d938 4027 return s->session->psk_identity_hint;
0f113f3e 4028}
ddac1974
NL		 4029
4030const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4031{
4032 if (s == NULL || s->session == NULL)
4033 return NULL;
26a7d938 4034 return s->session->psk_identity;
0f113f3e 4035}
7806f3dd 4036
8cbfcc70 4037void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4038{
4039 s->psk_client_callback = cb;
4040}
7806f3dd 4041
8cbfcc70 4042void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4043{
4044 ctx->psk_client_callback = cb;
4045}
7806f3dd 4046
8cbfcc70 4047void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4048{
4049 s->psk_server_callback = cb;
4050}
7806f3dd 4051
8cbfcc70 4052void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4053{
4054 ctx->psk_server_callback = cb;
4055}
4056#endif
4057
f46184bd
MC		 4058void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4059{
4060 s->psk_find_session_cb = cb;
4061}
4062
4063void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4064 SSL_psk_find_session_cb_func cb)
4065{
4066 ctx->psk_find_session_cb = cb;
4067}
4068
4069void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4070{
4071 s->psk_use_session_cb = cb;
4072}
4073
4074void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4075 SSL_psk_use_session_cb_func cb)
4076{
4077 ctx->psk_use_session_cb = cb;
4078}
4079
0f113f3e
MC		 4080void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4081 void (*cb) (int write_p, int version,
4082 int content_type, const void *buf,
4083 size_t len, SSL *ssl, void *arg))
4084{
4085 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4086}
4087
4088void SSL_set_msg_callback(SSL *ssl,
4089 void (*cb) (int write_p, int version,
4090 int content_type, const void *buf,
4091 size_t len, SSL *ssl, void *arg))
4092{
4093 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4094}
a661b653 4095
7c2d4fee 4096void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4097 int (*cb) (SSL *ssl,
4098 int
4099 is_forward_secure))
4100{
4101 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4102 (void (*)(void))cb);
4103}
4104
7c2d4fee 4105void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4106 int (*cb) (SSL *ssl,
4107 int is_forward_secure))
4108{
4109 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4110 (void (*)(void))cb);
4111}
4112
c649d10d
TS		 4113void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4114 size_t (*cb) (SSL *ssl, int type,
4115 size_t len, void *arg))
4116{
4117 ctx->record_padding_cb = cb;
4118}
4119
4120void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4121{
4122 ctx->record_padding_arg = arg;
4123}
4124
4125void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4126{
4127 return ctx->record_padding_arg;
4128}
4129
4130int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4131{
4132 /* block size of 0 or 1 is basically no padding */
4133 if (block_size == 1)
4134 ctx->block_padding = 0;
4135 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4136 ctx->block_padding = block_size;
4137 else
4138 return 0;
4139 return 1;
4140}
4141
4142void SSL_set_record_padding_callback(SSL *ssl,
4143 size_t (*cb) (SSL *ssl, int type,
4144 size_t len, void *arg))
4145{
4146 ssl->record_padding_cb = cb;
4147}
4148
4149void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4150{
4151 ssl->record_padding_arg = arg;
4152}
4153
4154void *SSL_get_record_padding_callback_arg(SSL *ssl)
4155{
4156 return ssl->record_padding_arg;
4157}
4158
4159int SSL_set_block_padding(SSL *ssl, size_t block_size)
4160{
4161 /* block size of 0 or 1 is basically no padding */
4162 if (block_size == 1)
4163 ssl->block_padding = 0;
4164 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4165 ssl->block_padding = block_size;
4166 else
4167 return 0;
4168 return 1;
4169}
4170
0f113f3e
MC		 4171/*
4172 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4173 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4174 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4175 * Returns the newly allocated ctx;
8671b898 4176 */
b948e2c5 4177
0f113f3e 4178EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4179{
0f113f3e 4180 ssl_clear_hash_ctx(hash);
bfb0641f 4181 *hash = EVP_MD_CTX_new();
5f3d93e4 4182 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4183 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4184 *hash = NULL;
4185 return NULL;
4186 }
0f113f3e 4187 return *hash;
b948e2c5 4188}
0f113f3e
MC		 4189
4190void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4191{
4192
0d9824c1 4193 EVP_MD_CTX_free(*hash);
0f113f3e 4194 *hash = NULL;
b948e2c5 4195}
a661b653 4196
48fbcbac 4197/* Retrieve handshake hashes */
8c1a5343
MC		 4198int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4199 size_t *hashlen)
48fbcbac 4200{
6e59a892 4201 EVP_MD_CTX *ctx = NULL;
28ba2541 4202 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
8c1a5343
MC		 4203 int hashleni = EVP_MD_CTX_size(hdgst);
4204 int ret = 0;
4205
f63a17d6
MC		 4206 if (hashleni < 0 || (size_t)hashleni > outlen) {
4207 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4208 ERR_R_INTERNAL_ERROR);
28ba2541 4209 goto err;
f63a17d6 4210 }
8c1a5343 4211
bfb0641f 4212 ctx = EVP_MD_CTX_new();
8c1a5343 4213 if (ctx == NULL)
6e59a892 4214 goto err;
8c1a5343 4215
6e59a892 4216 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4217 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4218 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4219 ERR_R_INTERNAL_ERROR);
8c1a5343 4220 goto err;
f63a17d6 4221 }
8c1a5343
MC		 4222
4223 *hashlen = hashleni;
4224
4225 ret = 1;
48fbcbac 4226 err:
bfb0641f 4227 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4228 return ret;
4229}
4230
b577fd0b 4231int SSL_session_reused(SSL *s)
0f113f3e
MC		 4232{
4233 return s->hit;
4234}
08557cf2 4235
69443116 4236int SSL_is_server(const SSL *s)
0f113f3e
MC		 4237{
4238 return s->server;
4239}
87adf1fa 4240
47153c72
RS		 4241#if OPENSSL_API_COMPAT < 0x10100000L
4242void SSL_set_debug(SSL *s, int debug)
4243{
4244 /* Old function was do-nothing anyway... */
4245 (void)s;
4246 (void)debug;
4247}
4248#endif
4249
b362ccab 4250void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4251{
4252 s->cert->sec_level = level;
4253}
b362ccab
DSH		 4254
4255int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4256{
4257 return s->cert->sec_level;
4258}
b362ccab 4259
0f113f3e 4260void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4261 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4262 int op, int bits, int nid,
4263 void *other, void *ex))
0f113f3e
MC		 4264{
4265 s->cert->sec_cb = cb;
4266}
b362ccab 4267
a230b26e
EK		 4268int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4269 const SSL_CTX *ctx, int op,
4270 int bits, int nid, void *other,
4271 void *ex) {
0f113f3e
MC		 4272 return s->cert->sec_cb;
4273}
b362ccab
DSH		 4274
4275void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4276{
4277 s->cert->sec_ex = ex;
4278}
b362ccab
DSH		 4279
4280void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4281{
4282 return s->cert->sec_ex;
4283}
b362ccab
DSH		 4284
4285void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4286{
4287 ctx->cert->sec_level = level;
4288}
b362ccab
DSH		 4289
4290int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4291{
4292 return ctx->cert->sec_level;
4293}
b362ccab 4294
0f113f3e 4295void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4296 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4297 int op, int bits, int nid,
4298 void *other, void *ex))
0f113f3e
MC		 4299{
4300 ctx->cert->sec_cb = cb;
4301}
b362ccab 4302
e4646a89
KR		 4303int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4304 const SSL_CTX *ctx,
0f113f3e
MC		 4305 int op, int bits,
4306 int nid,
4307 void *other,
4308 void *ex) {
4309 return ctx->cert->sec_cb;
4310}
b362ccab
DSH		 4311
4312void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4313{
4314 ctx->cert->sec_ex = ex;
4315}
b362ccab
DSH		 4316
4317void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4318{
4319 return ctx->cert->sec_ex;
4320}
b362ccab 4321
8106cb8b
VD		 4322/*
4323 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4324 * can return unsigned long, instead of the generic long return value from the
4325 * control interface.
4326 */
4327unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4328{
4329 return ctx->options;
4330}
a230b26e
EK		 4331
4332unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4333{
4334 return s->options;
4335}
a230b26e 4336
8106cb8b
VD		 4337unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4338{
4339 return ctx->options |= op;
4340}
a230b26e 4341
8106cb8b
VD		 4342unsigned long SSL_set_options(SSL *s, unsigned long op)
4343{
4344 return s->options |= op;
4345}
a230b26e 4346
8106cb8b
VD		 4347unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4348{
4349 return ctx->options &= ~op;
4350}
a230b26e 4351
8106cb8b
VD		 4352unsigned long SSL_clear_options(SSL *s, unsigned long op)
4353{
4354 return s->options &= ~op;
4355}
4356
696178ed
DSH		 4357STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4358{
4359 return s->verified_chain;
4360}
4361
0f113f3e 4362IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4363
4364#ifndef OPENSSL_NO_CT
4365
4366/*
4367 * Moves SCTs from the |src| stack to the |dst| stack.
4368 * The source of each SCT will be set to |origin|.
4369 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4370 * the caller.
4371 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4372 */
a230b26e
EK		 4373static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4374 sct_source_t origin)
ed29e82a
RP		 4375{
4376 int scts_moved = 0;
4377 SCT *sct = NULL;
4378
4379 if (*dst == NULL) {
4380 *dst = sk_SCT_new_null();
4381 if (*dst == NULL) {
4382 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4383 goto err;
4384 }
4385 }
4386
4387 while ((sct = sk_SCT_pop(src)) != NULL) {
4388 if (SCT_set_source(sct, origin) != 1)
4389 goto err;
4390
4391 if (sk_SCT_push(*dst, sct) <= 0)
4392 goto err;
4393 scts_moved += 1;
4394 }
4395
4396 return scts_moved;
a230b26e 4397 err:
ed29e82a 4398 if (sct != NULL)
a230b26e 4399 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4400 return -1;
ed29e82a
RP		 4401}
4402
4403/*
a230b26e 4404 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4405 * Returns the number of SCTs extracted.
a230b26e 4406 */
ed29e82a
RP		 4407static int ct_extract_tls_extension_scts(SSL *s)
4408{
4409 int scts_extracted = 0;
4410
aff8c126
RS		 4411 if (s->ext.scts != NULL) {
4412 const unsigned char *p = s->ext.scts;
4413 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4414
4415 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4416
4417 SCT_LIST_free(scts);
4418 }
4419
4420 return scts_extracted;
4421}
4422
4423/*
4424 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4425 * contains an SCT X509 extension. They will be stored in |s->scts|.
4426 * Returns:
4427 * - The number of SCTs extracted, assuming an OCSP response exists.
4428 * - 0 if no OCSP response exists or it contains no SCTs.
4429 * - A negative integer if an error occurs.
4430 */
4431static int ct_extract_ocsp_response_scts(SSL *s)
4432{
a230b26e 4433# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4434 int scts_extracted = 0;
4435 const unsigned char *p;
4436 OCSP_BASICRESP *br = NULL;
4437 OCSP_RESPONSE *rsp = NULL;
4438 STACK_OF(SCT) *scts = NULL;
4439 int i;
4440
aff8c126 4441 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4442 goto err;
4443
aff8c126
RS		 4444 p = s->ext.ocsp.resp;
4445 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4446 if (rsp == NULL)
4447 goto err;
4448
4449 br = OCSP_response_get1_basic(rsp);
4450 if (br == NULL)
4451 goto err;
4452
4453 for (i = 0; i < OCSP_resp_count(br); ++i) {
4454 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4455
4456 if (single == NULL)
4457 continue;
4458
a230b26e
EK		 4459 scts =
4460 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4461 scts_extracted =
4462 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4463 if (scts_extracted < 0)
4464 goto err;
4465 }
a230b26e 4466 err:
ed29e82a
RP		 4467 SCT_LIST_free(scts);
4468 OCSP_BASICRESP_free(br);
4469 OCSP_RESPONSE_free(rsp);
4470 return scts_extracted;
a230b26e 4471# else
3e41ac35
MC		 4472 /* Behave as if no OCSP response exists */
4473 return 0;
a230b26e 4474# endif
ed29e82a
RP		 4475}
4476
4477/*
4478 * Attempts to extract SCTs from the peer certificate.
4479 * Return the number of SCTs extracted, or a negative integer if an error
4480 * occurs.
4481 */
4482static int ct_extract_x509v3_extension_scts(SSL *s)
4483{
4484 int scts_extracted = 0;
3f3c7d26 4485 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4486
4487 if (cert != NULL) {
4488 STACK_OF(SCT) *scts =
4489 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4490
4491 scts_extracted =
4492 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4493
4494 SCT_LIST_free(scts);
4495 }
4496
4497 return scts_extracted;
4498}
4499
4500/*
4501 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4502 * response (if it exists) and X509v3 extensions in the certificate.
4503 * Returns NULL if an error occurs.
4504 */
4505const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4506{
4507 if (!s->scts_parsed) {
4508 if (ct_extract_tls_extension_scts(s) < 0 ||
4509 ct_extract_ocsp_response_scts(s) < 0 ||
4510 ct_extract_x509v3_extension_scts(s) < 0)
4511 goto err;
4512
4513 s->scts_parsed = 1;
4514 }
4515 return s->scts;
a230b26e 4516 err:
ed29e82a
RP		 4517 return NULL;
4518}
4519
a230b26e 4520static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4521 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4522{
43341433
VD		 4523 return 1;
4524}
4525
a230b26e 4526static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4527 const STACK_OF(SCT) *scts, void *unused_arg)
4528{
4529 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4530 int i;
ed29e82a 4531
43341433
VD		 4532 for (i = 0; i < count; ++i) {
4533 SCT *sct = sk_SCT_value(scts, i);
4534 int status = SCT_get_validation_status(sct);
4535
4536 if (status == SCT_VALIDATION_STATUS_VALID)
4537 return 1;
4538 }
4539 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4540 return 0;
4541}
4542
4543int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4544 void *arg)
4545{
ed29e82a
RP		 4546 /*
4547 * Since code exists that uses the custom extension handler for CT, look
4548 * for this and throw an error if they have already registered to use CT.
4549 */
4550 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4551 TLSEXT_TYPE_signed_certificate_timestamp))
4552 {
ed29e82a
RP		 4553 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4554 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4555 return 0;
ed29e82a
RP		 4556 }
4557
ed29e82a 4558 if (callback != NULL) {
a230b26e
EK		 4559 /*
4560 * If we are validating CT, then we MUST accept SCTs served via OCSP
4561 */
ed29e82a 4562 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4563 return 0;
ed29e82a
RP		 4564 }
4565
43341433
VD		 4566 s->ct_validation_callback = callback;
4567 s->ct_validation_callback_arg = arg;
4568
4569 return 1;
ed29e82a
RP		 4570}
4571
43341433 4572int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 4573 ssl_ct_validation_cb callback, void *arg)
ed29e82a 4574{
ed29e82a
RP		 4575 /*
4576 * Since code exists that uses the custom extension handler for CT, look for
4577 * this and throw an error if they have already registered to use CT.
4578 */
4579 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 4580 TLSEXT_TYPE_signed_certificate_timestamp))
4581 {
ed29e82a
RP		 4582 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4583 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4584 return 0;
ed29e82a
RP		 4585 }
4586
4587 ctx->ct_validation_callback = callback;
4588 ctx->ct_validation_callback_arg = arg;
43341433 4589 return 1;
ed29e82a
RP		 4590}
4591
43341433 4592int SSL_ct_is_enabled(const SSL *s)
ed29e82a 4593{
43341433 4594 return s->ct_validation_callback != NULL;
ed29e82a
RP		 4595}
4596
43341433 4597int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 4598{
43341433 4599 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 4600}
4601
4d482ee2 4602int ssl_validate_ct(SSL *s)
ed29e82a
RP		 4603{
4604 int ret = 0;
3f3c7d26 4605 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 4606 X509 *issuer;
b9aec69a 4607 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 4608 CT_POLICY_EVAL_CTX *ctx = NULL;
4609 const STACK_OF(SCT) *scts;
4610
43341433
VD		 4611 /*
4612 * If no callback is set, the peer is anonymous, or its chain is invalid,
4613 * skip SCT validation - just return success. Applications that continue
4614 * handshakes without certificates, with unverified chains, or pinned leaf
4615 * certificates are outside the scope of the WebPKI and CT.
4616 *
4617 * The above exclusions notwithstanding the vast majority of peers will
4618 * have rather ordinary certificate chains validated by typical
4619 * applications that perform certificate verification and therefore will
4620 * process SCTs when enabled.
4621 */
4622 if (s->ct_validation_callback == NULL || cert == NULL ||
4623 s->verify_result != X509_V_OK ||
a230b26e 4624 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 4625 return 1;
4626
43341433
VD		 4627 /*
4628 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4629 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4630 */
4631 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4632 switch (dane->mtlsa->usage) {
4633 case DANETLS_USAGE_DANE_TA:
4634 case DANETLS_USAGE_DANE_EE:
4635 return 1;
4636 }
ed29e82a
RP		 4637 }
4638
ed29e82a
RP		 4639 ctx = CT_POLICY_EVAL_CTX_new();
4640 if (ctx == NULL) {
f63a17d6
MC		 4641 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
4642 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 4643 goto end;
4644 }
4645
43341433 4646 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 4647 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4648 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4649 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 4650 CT_POLICY_EVAL_CTX_set_time(
4651 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 4652
4653 scts = SSL_get0_peer_scts(s);
4654
43341433
VD		 4655 /*
4656 * This function returns success (> 0) only when all the SCTs are valid, 0
4657 * when some are invalid, and < 0 on various internal errors (out of
4658 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4659 * reason to abort the handshake, that decision is up to the callback.
4660 * Therefore, we error out only in the unexpected case that the return
4661 * value is negative.
4662 *
4663 * XXX: One might well argue that the return value of this function is an
f430ba31 4664 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 4665 * status of each of the provided SCTs. So long as it correctly separates
4666 * the wheat from the chaff it should return success. Failure in this case
4667 * ought to correspond to an inability to carry out its duties.
4668 */
4669 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 4670 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4671 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 4672 goto end;
4673 }
4674
4675 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4676 if (ret < 0)
a230b26e 4677 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 4678 if (!ret)
4679 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4680 SSL_R_CALLBACK_FAILED);
ed29e82a 4681
a230b26e 4682 end:
ed29e82a 4683 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 4684 /*
4685 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4686 * failure return code here. Also the application may wish the complete
4687 * the handshake, and then disconnect cleanly at a higher layer, after
4688 * checking the verification status of the completed connection.
4689 *
4690 * We therefore force a certificate verification failure which will be
4691 * visible via SSL_get_verify_result() and cached as part of any resumed
4692 * session.
4693 *
4694 * Note: the permissive callback is for information gathering only, always
4695 * returns success, and does not affect verification status. Only the
4696 * strict callback or a custom application-specified callback can trigger
4697 * connection failure or record a verification error.
4698 */
4699 if (ret <= 0)
4700 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 4701 return ret;
4702}
4703
43341433
VD		 4704int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4705{
4706 switch (validation_mode) {
4707 default:
4708 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4709 return 0;
4710 case SSL_CT_VALIDATION_PERMISSIVE:
4711 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4712 case SSL_CT_VALIDATION_STRICT:
4713 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4714 }
4715}
4716
4717int SSL_enable_ct(SSL *s, int validation_mode)
4718{
4719 switch (validation_mode) {
4720 default:
4721 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4722 return 0;
4723 case SSL_CT_VALIDATION_PERMISSIVE:
4724 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4725 case SSL_CT_VALIDATION_STRICT:
4726 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4727 }
4728}
4729
ed29e82a
RP		 4730int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4731{
328f36c5 4732 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 4733}
4734
4735int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4736{
4737 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4738}
4739
a230b26e 4740void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 4741{
4742 CTLOG_STORE_free(ctx->ctlog_store);
4743 ctx->ctlog_store = logs;
4744}
4745
4746const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4747{
4748 return ctx->ctlog_store;
4749}
4750
6b1bb98f
BK		 4751#endif /* OPENSSL_NO_CT */
4752
a9c0d8be
DB		 4753void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4754 void *arg)
6b1bb98f 4755{
a9c0d8be
DB		 4756 c->client_hello_cb = cb;
4757 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 4758}
4759
a9c0d8be 4760int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 4761{
4762 if (s->clienthello == NULL)
4763 return 0;
4764 return s->clienthello->isv2;
4765}
4766
a9c0d8be 4767unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 4768{
4769 if (s->clienthello == NULL)
4770 return 0;
4771 return s->clienthello->legacy_version;
4772}
4773
a9c0d8be 4774size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4775{
4776 if (s->clienthello == NULL)
4777 return 0;
4778 if (out != NULL)
4779 *out = s->clienthello->random;
4780 return SSL3_RANDOM_SIZE;
4781}
4782
a9c0d8be 4783size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4784{
4785 if (s->clienthello == NULL)
4786 return 0;
4787 if (out != NULL)
4788 *out = s->clienthello->session_id;
4789 return s->clienthello->session_id_len;
4790}
4791
a9c0d8be 4792size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4793{
4794 if (s->clienthello == NULL)
4795 return 0;
4796 if (out != NULL)
4797 *out = PACKET_data(&s->clienthello->ciphersuites);
4798 return PACKET_remaining(&s->clienthello->ciphersuites);
4799}
4800
a9c0d8be 4801size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4802{
4803 if (s->clienthello == NULL)
4804 return 0;
4805 if (out != NULL)
4806 *out = s->clienthello->compressions;
4807 return s->clienthello->compressions_len;
4808}
4809
a9c0d8be 4810int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 4811{
4812 RAW_EXTENSION *ext;
4813 int *present;
4814 size_t num = 0, i;
4815
4816 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4817 return 0;
4818 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4819 ext = s->clienthello->pre_proc_exts + i;
4820 if (ext->present)
4821 num++;
4822 }
4823 present = OPENSSL_malloc(sizeof(*present) * num);
4824 if (present == NULL)
4825 return 0;
4826 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4827 ext = s->clienthello->pre_proc_exts + i;
4828 if (ext->present) {
4829 if (ext->received_order >= num)
4830 goto err;
4831 present[ext->received_order] = ext->type;
4832 }
4833 }
4834 *out = present;
4835 *outlen = num;
4836 return 1;
4837 err:
4838 OPENSSL_free(present);
4839 return 0;
4840}
4841
a9c0d8be 4842int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 4843 size_t *outlen)
4844{
4845 size_t i;
4846 RAW_EXTENSION *r;
4847
4848 if (s->clienthello == NULL)
4849 return 0;
4850 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4851 r = s->clienthello->pre_proc_exts + i;
4852 if (r->present && r->type == type) {
4853 if (out != NULL)
4854 *out = PACKET_data(&r->data);
4855 if (outlen != NULL)
4856 *outlen = PACKET_remaining(&r->data);
4857 return 1;
4858 }
4859 }
4860 return 0;
4861}
2faa1b48 4862
a58eb06d
TS		 4863int SSL_free_buffers(SSL *ssl)
4864{
4865 RECORD_LAYER *rl = &ssl->rlayer;
4866
4867 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4868 return 0;
4869
4870 RECORD_LAYER_release(rl);
4871 return 1;
4872}
4873
4874int SSL_alloc_buffers(SSL *ssl)
4875{
4876 return ssl3_setup_buffers(ssl);
4877}
4878
2faa1b48
CB		 4879void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4880{
4881 ctx->keylog_callback = cb;
4882}
4883
4884SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4885{
4886 return ctx->keylog_callback;
4887}
4888
4889static int nss_keylog_int(const char *prefix,
4890 SSL *ssl,
4891 const uint8_t *parameter_1,
4892 size_t parameter_1_len,
4893 const uint8_t *parameter_2,
4894 size_t parameter_2_len)
4895{
4896 char *out = NULL;
4897 char *cursor = NULL;
4898 size_t out_len = 0;
4899 size_t i;
4900 size_t prefix_len;
4901
4902 if (ssl->ctx->keylog_callback == NULL) return 1;
4903
4904 /*
4905 * Our output buffer will contain the following strings, rendered with
4906 * space characters in between, terminated by a NULL character: first the
4907 * prefix, then the first parameter, then the second parameter. The
4908 * meaning of each parameter depends on the specific key material being
4909 * logged. Note that the first and second parameters are encoded in
4910 * hexadecimal, so we need a buffer that is twice their lengths.
4911 */
4912 prefix_len = strlen(prefix);
4913 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4914 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 4915 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
4916 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 4917 return 0;
4918 }
4919
4920 strcpy(cursor, prefix);
4921 cursor += prefix_len;
4922 *cursor++ = ' ';
4923
4924 for (i = 0; i < parameter_1_len; i++) {
4925 sprintf(cursor, "%02x", parameter_1[i]);
4926 cursor += 2;
4927 }
4928 *cursor++ = ' ';
4929
4930 for (i = 0; i < parameter_2_len; i++) {
4931 sprintf(cursor, "%02x", parameter_2[i]);
4932 cursor += 2;
4933 }
4934 *cursor = '\0';
4935
4936 ssl->ctx->keylog_callback(ssl, (const char *)out);
4937 OPENSSL_free(out);
4938 return 1;
4939
4940}
4941
4942int ssl_log_rsa_client_key_exchange(SSL *ssl,
4943 const uint8_t *encrypted_premaster,
4944 size_t encrypted_premaster_len,
4945 const uint8_t *premaster,
4946 size_t premaster_len)
4947{
4948 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 4949 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
4950 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 4951 return 0;
4952 }
4953
f0deb4d3 4954 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 4955 return nss_keylog_int("RSA",
4956 ssl,
4957 encrypted_premaster,
f0deb4d3 4958 8,
2faa1b48
CB		 4959 premaster,
4960 premaster_len);
4961}
4962
2c7bd692
CB		 4963int ssl_log_secret(SSL *ssl,
4964 const char *label,
4965 const uint8_t *secret,
4966 size_t secret_len)
2faa1b48 4967{
2c7bd692 4968 return nss_keylog_int(label,
2faa1b48 4969 ssl,
2c7bd692
CB		 4970 ssl->s3->client_random,
4971 SSL3_RANDOM_SIZE,
4972 secret,
4973 secret_len);
2faa1b48
CB		 4974}
4975
ccb8e6e0
BK		 4976#define SSLV2_CIPHER_LEN 3
4977
f63a17d6 4978int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 4979{
ccb8e6e0 4980 int n;
ccb8e6e0
BK		 4981
4982 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4983
4984 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 4985 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
4986 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 4987 return 0;
ccb8e6e0
BK		 4988 }
4989
4990 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 4991 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 4992 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 4993 return 0;
ccb8e6e0
BK		 4994 }
4995
4996 OPENSSL_free(s->s3->tmp.ciphers_raw);
4997 s->s3->tmp.ciphers_raw = NULL;
4998 s->s3->tmp.ciphers_rawlen = 0;
4999
5000 if (sslv2format) {
5001 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5002 PACKET sslv2ciphers = *cipher_suites;
5003 unsigned int leadbyte;
5004 unsigned char *raw;
5005
5006 /*
5007 * We store the raw ciphers list in SSLv3+ format so we need to do some
5008 * preprocessing to convert the list first. If there are any SSLv2 only
5009 * ciphersuites with a non-zero leading byte then we are going to
5010 * slightly over allocate because we won't store those. But that isn't a
5011 * problem.
5012 */
5013 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5014 s->s3->tmp.ciphers_raw = raw;
5015 if (raw == NULL) {
f63a17d6
MC		 5016 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5017 ERR_R_MALLOC_FAILURE);
5018 return 0;
ccb8e6e0
BK		 5019 }
5020 for (s->s3->tmp.ciphers_rawlen = 0;
5021 PACKET_remaining(&sslv2ciphers) > 0;
5022 raw += TLS_CIPHER_LEN) {
5023 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5024 || (leadbyte == 0
5025 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5026 TLS_CIPHER_LEN))
5027 || (leadbyte != 0
5028 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5029 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5030 SSL_R_BAD_PACKET);
ccb8e6e0
BK		 5031 OPENSSL_free(s->s3->tmp.ciphers_raw);
5032 s->s3->tmp.ciphers_raw = NULL;
5033 s->s3->tmp.ciphers_rawlen = 0;
f63a17d6 5034 return 0;
ccb8e6e0
BK		 5035 }
5036 if (leadbyte == 0)
5037 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5038 }
5039 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5040 &s->s3->tmp.ciphers_rawlen)) {
f63a17d6
MC		 5041 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5042 ERR_R_INTERNAL_ERROR);
5043 return 0;
ccb8e6e0 5044 }
90134d98 5045 return 1;
90134d98
BK		 5046}
5047
5048int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5049 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5050 STACK_OF(SSL_CIPHER) **scsvs)
5051{
90134d98
BK		 5052 PACKET pkt;
5053
5054 if (!PACKET_buf_init(&pkt, bytes, len))
5055 return 0;
f63a17d6 5056 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5057}
5058
5059int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5060 STACK_OF(SSL_CIPHER) **skp,
5061 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5062 int sslv2format, int fatal)
90134d98
BK		 5063{
5064 const SSL_CIPHER *c;
5065 STACK_OF(SSL_CIPHER) *sk = NULL;
5066 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5067 int n;
5068 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5069 unsigned char cipher[SSLV2_CIPHER_LEN];
5070
5071 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5072
5073 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5074 if (fatal)
5075 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5076 SSL_R_NO_CIPHERS_SPECIFIED);
5077 else
5078 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5079 return 0;
5080 }
5081
5082 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5083 if (fatal)
5084 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5085 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5086 else
5087 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5088 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5089 return 0;
5090 }
5091
5092 sk = sk_SSL_CIPHER_new_null();
5093 scsvs = sk_SSL_CIPHER_new_null();
5094 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5095 if (fatal)
5096 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5097 ERR_R_MALLOC_FAILURE);
5098 else
5099 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5100 goto err;
5101 }
ccb8e6e0
BK		 5102
5103 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5104 /*
5105 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5106 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5107 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5108 */
5109 if (sslv2format && cipher[0] != '\0')
5110 continue;
5111
ccb8e6e0
BK		 5112 /* For SSLv2-compat, ignore leading 0-byte. */
5113 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5114 if (c != NULL) {
90134d98
BK		 5115 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5116 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5117 if (fatal)
5118 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5119 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5120 else
5121 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5122 goto err;
5123 }
5124 }
5125 }
5126 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5127 if (fatal)
5128 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5129 SSL_R_BAD_LENGTH);
5130 else
5131 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5132 goto err;
5133 }
5134
90134d98
BK		 5135 if (skp != NULL)
5136 *skp = sk;
5137 else
5138 sk_SSL_CIPHER_free(sk);
5139 if (scsvs_out != NULL)
5140 *scsvs_out = scsvs;
5141 else
5142 sk_SSL_CIPHER_free(scsvs);
5143 return 1;
ccb8e6e0
BK		 5144 err:
5145 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5146 sk_SSL_CIPHER_free(scsvs);
5147 return 0;
ccb8e6e0 5148}
3fc8d856
MC		 5149
5150int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5151{
5152 ctx->max_early_data = max_early_data;
5153
5154 return 1;
5155}
5156
46dcb945 5157uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5158{
5159 return ctx->max_early_data;
5160}
5161
5162int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5163{
5164 s->max_early_data = max_early_data;
5165
5166 return 1;
5167}
5168
a8e75d56 5169uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5170{
5171 return s->max_early_data;
5172}
ae3947de
RS		 5173
5174int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5175{
2139145b
BK		 5176 if (s->drbg != NULL) {
5177 /*
5178 * Currently, it's the duty of the caller to serialize the generate
5179 * requests to the DRBG. So formally we have to check whether
5180 * s->drbg->lock != NULL and take the lock if this is the case.
5181 * However, this DRBG is unique to a given SSL object, and we already
5182 * require that SSL objects are only accessed by a single thread at
5183 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5184 * no risk that this DRBG is accessed by a child DRBG in parallel
5185 * for reseeding. As such, we can rely on the application's
5186 * serialization of SSL accesses for the needed concurrency protection
5187 * here.
5188 */
5189 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5190 }
ae3947de
RS		 5191 return RAND_bytes(rnd, (int)size);
5192}
cf72c757
F		 5193
5194__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5195{
5196 /* Return any active Max Fragment Len extension */
5197 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5198 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5199
5200 /* return current SSL connection setting */
5201 return ssl->max_send_fragment;
5202}
5203
5204__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5205{
5206 /* Return a value regarding an active Max Fragment Len extension */
5207 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5208 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5209 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5210
5211 /* else limit |split_send_fragment| to current |max_send_fragment| */
5212 if (ssl->split_send_fragment > ssl->max_send_fragment)
5213 return ssl->max_send_fragment;
5214
5215 /* return current SSL connection setting */
5216 return ssl->split_send_fragment;
5217}
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