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[thirdparty/openssl.git] / ssl / ssl_lib.c
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0f113f3e 1/*
48e5119a 2 * Copyright 1995-2018 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 27
fce78bd4
BE		 28static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
29{
30 (void)r;
31 (void)s;
32 (void)t;
33 return ssl_undefined_function(ssl);
34}
35
36static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
37 int t)
38{
39 (void)r;
40 (void)s;
41 (void)t;
42 return ssl_undefined_function(ssl);
43}
44
45static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
46 unsigned char *s, size_t t, size_t *u)
47{
48 (void)r;
49 (void)s;
50 (void)t;
51 (void)u;
52 return ssl_undefined_function(ssl);
53}
54
55static int ssl_undefined_function_4(SSL *ssl, int r)
56{
57 (void)r;
58 return ssl_undefined_function(ssl);
59}
60
61static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
62 unsigned char *t)
63{
64 (void)r;
65 (void)s;
66 (void)t;
67 return ssl_undefined_function(ssl);
68}
69
70static int ssl_undefined_function_6(int r)
71{
72 (void)r;
73 return ssl_undefined_function(NULL);
74}
75
76static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
77 const char *t, size_t u,
78 const unsigned char *v, size_t w, int x)
79{
80 (void)r;
81 (void)s;
82 (void)t;
83 (void)u;
84 (void)v;
85 (void)w;
86 (void)x;
87 return ssl_undefined_function(ssl);
88}
89
0f113f3e 90SSL3_ENC_METHOD ssl3_undef_enc_method = {
fce78bd4
BE		 91 ssl_undefined_function_1,
92 ssl_undefined_function_2,
0f113f3e 93 ssl_undefined_function,
fce78bd4
BE		 94 ssl_undefined_function_3,
95 ssl_undefined_function_4,
96 ssl_undefined_function_5,
0f113f3e
MC		 97 NULL, /* client_finished_label */
98 0, /* client_finished_label_len */
99 NULL, /* server_finished_label */
100 0, /* server_finished_label_len */
fce78bd4
BE		 101 ssl_undefined_function_6,
102 ssl_undefined_function_7,
0f113f3e 103};
d02b48c6 104
07bbc92c
MC		 105struct ssl_async_args {
106 SSL *s;
107 void *buf;
348240c6 108 size_t num;
a230b26e 109 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 110 union {
eda75751 111 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 112 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 113 int (*func_other) (SSL *);
add2f5ca 114 } f;
07bbc92c
MC		 115};
116
919ba009
VD		 117static const struct {
118 uint8_t mtype;
119 uint8_t ord;
a230b26e 120 int nid;
919ba009 121} dane_mds[] = {
a230b26e
EK		 122 {
123 DANETLS_MATCHING_FULL, 0, NID_undef
124 },
125 {
126 DANETLS_MATCHING_2256, 1, NID_sha256
127 },
128 {
129 DANETLS_MATCHING_2512, 2, NID_sha512
130 },
919ba009
VD		 131};
132
133static int dane_ctx_enable(struct dane_ctx_st *dctx)
134{
135 const EVP_MD **mdevp;
136 uint8_t *mdord;
137 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 138 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 139 size_t i;
140
5ae4ceb9
VD		 141 if (dctx->mdevp != NULL)
142 return 1;
143
919ba009
VD		 144 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
145 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
146
147 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 148 OPENSSL_free(mdord);
919ba009
VD		 149 OPENSSL_free(mdevp);
150 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
151 return 0;
152 }
153
154 /* Install default entries */
155 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
156 const EVP_MD *md;
157
158 if (dane_mds[i].nid == NID_undef ||
159 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
160 continue;
161 mdevp[dane_mds[i].mtype] = md;
162 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
163 }
164
165 dctx->mdevp = mdevp;
166 dctx->mdord = mdord;
167 dctx->mdmax = mdmax;
168
169 return 1;
170}
171
172static void dane_ctx_final(struct dane_ctx_st *dctx)
173{
174 OPENSSL_free(dctx->mdevp);
175 dctx->mdevp = NULL;
176
177 OPENSSL_free(dctx->mdord);
178 dctx->mdord = NULL;
179 dctx->mdmax = 0;
180}
181
182static void tlsa_free(danetls_record *t)
183{
184 if (t == NULL)
185 return;
186 OPENSSL_free(t->data);
187 EVP_PKEY_free(t->spki);
188 OPENSSL_free(t);
189}
190
b9aec69a 191static void dane_final(SSL_DANE *dane)
919ba009
VD		 192{
193 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
194 dane->trecs = NULL;
195
196 sk_X509_pop_free(dane->certs, X509_free);
197 dane->certs = NULL;
198
199 X509_free(dane->mcert);
200 dane->mcert = NULL;
201 dane->mtlsa = NULL;
202 dane->mdpth = -1;
203 dane->pdpth = -1;
204}
205
206/*
207 * dane_copy - Copy dane configuration, sans verification state.
208 */
209static int ssl_dane_dup(SSL *to, SSL *from)
210{
211 int num;
212 int i;
213
214 if (!DANETLS_ENABLED(&from->dane))
215 return 1;
216
e431363f 217 num = sk_danetls_record_num(from->dane.trecs);
919ba009 218 dane_final(&to->dane);
5ae4ceb9 219 to->dane.flags = from->dane.flags;
9f6b22b8 220 to->dane.dctx = &to->ctx->dane;
7a908204 221 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 222
223 if (to->dane.trecs == NULL) {
224 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
225 return 0;
226 }
919ba009 227
919ba009
VD		 228 for (i = 0; i < num; ++i) {
229 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 230
919ba009
VD		 231 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
232 t->data, t->dlen) <= 0)
233 return 0;
234 }
235 return 1;
236}
237
a230b26e
EK		 238static int dane_mtype_set(struct dane_ctx_st *dctx,
239 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 240{
241 int i;
242
243 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
a230b26e 244 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 245 return 0;
246 }
247
248 if (mtype > dctx->mdmax) {
249 const EVP_MD **mdevp;
250 uint8_t *mdord;
a230b26e 251 int n = ((int)mtype) + 1;
919ba009
VD		 252
253 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
254 if (mdevp == NULL) {
255 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
256 return -1;
257 }
258 dctx->mdevp = mdevp;
259
260 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
261 if (mdord == NULL) {
262 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
263 return -1;
264 }
265 dctx->mdord = mdord;
266
267 /* Zero-fill any gaps */
a230b26e 268 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 269 mdevp[i] = NULL;
270 mdord[i] = 0;
271 }
272
273 dctx->mdmax = mtype;
274 }
275
276 dctx->mdevp[mtype] = md;
277 /* Coerce ordinal of disabled matching types to 0 */
278 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
279
280 return 1;
281}
282
b9aec69a 283static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 284{
285 if (mtype > dane->dctx->mdmax)
286 return NULL;
287 return dane->dctx->mdevp[mtype];
288}
289
a230b26e
EK		 290static int dane_tlsa_add(SSL_DANE *dane,
291 uint8_t usage,
292 uint8_t selector,
a41a6120 293 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 294{
295 danetls_record *t;
296 const EVP_MD *md = NULL;
297 int ilen = (int)dlen;
298 int i;
9f6b22b8 299 int num;
919ba009
VD		 300
301 if (dane->trecs == NULL) {
302 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
303 return -1;
304 }
305
306 if (ilen < 0 || dlen != (size_t)ilen) {
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
308 return 0;
309 }
310
311 if (usage > DANETLS_USAGE_LAST) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
313 return 0;
314 }
315
316 if (selector > DANETLS_SELECTOR_LAST) {
317 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
318 return 0;
319 }
320
321 if (mtype != DANETLS_MATCHING_FULL) {
322 md = tlsa_md_get(dane, mtype);
323 if (md == NULL) {
324 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
325 return 0;
326 }
327 }
328
329 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
330 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
331 return 0;
332 }
333 if (!data) {
334 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
335 return 0;
336 }
337
338 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
340 return -1;
341 }
342
343 t->usage = usage;
344 t->selector = selector;
345 t->mtype = mtype;
348240c6 346 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 347 if (t->data == NULL) {
348 tlsa_free(t);
349 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
350 return -1;
351 }
348240c6
MC		 352 memcpy(t->data, data, dlen);
353 t->dlen = dlen;
919ba009
VD		 354
355 /* Validate and cache full certificate or public key */
356 if (mtype == DANETLS_MATCHING_FULL) {
357 const unsigned char *p = data;
358 X509 *cert = NULL;
359 EVP_PKEY *pkey = NULL;
360
361 switch (selector) {
362 case DANETLS_SELECTOR_CERT:
348240c6 363 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 364 dlen != (size_t)(p - data)) {
365 tlsa_free(t);
366 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
367 return 0;
368 }
369 if (X509_get0_pubkey(cert) == NULL) {
370 tlsa_free(t);
371 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
372 return 0;
373 }
374
375 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
376 X509_free(cert);
377 break;
378 }
379
380 /*
381 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
382 * records that contain full certificates of trust-anchors that are
383 * not present in the wire chain. For usage PKIX-TA(0), we augment
384 * the chain with untrusted Full(0) certificates from DNS, in case
385 * they are missing from the chain.
386 */
387 if ((dane->certs == NULL &&
388 (dane->certs = sk_X509_new_null()) == NULL) ||
389 !sk_X509_push(dane->certs, cert)) {
390 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
391 X509_free(cert);
392 tlsa_free(t);
393 return -1;
394 }
395 break;
396
397 case DANETLS_SELECTOR_SPKI:
348240c6 398 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 399 dlen != (size_t)(p - data)) {
400 tlsa_free(t);
401 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
402 return 0;
403 }
404
405 /*
406 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
407 * records that contain full bare keys of trust-anchors that are
408 * not present in the wire chain.
409 */
410 if (usage == DANETLS_USAGE_DANE_TA)
411 t->spki = pkey;
412 else
413 EVP_PKEY_free(pkey);
414 break;
415 }
416 }
417
418 /*-
419 * Find the right insertion point for the new record.
420 *
421 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
422 * they can be processed first, as they require no chain building, and no
423 * expiration or hostname checks. Because DANE-EE(3) is numerically
424 * largest, this is accomplished via descending sort by "usage".
425 *
426 * We also sort in descending order by matching ordinal to simplify
427 * the implementation of digest agility in the verification code.
428 *
429 * The choice of order for the selector is not significant, so we
430 * use the same descending order for consistency.
431 */
9f6b22b8
VD		 432 num = sk_danetls_record_num(dane->trecs);
433 for (i = 0; i < num; ++i) {
919ba009 434 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 435
919ba009
VD		 436 if (rec->usage > usage)
437 continue;
438 if (rec->usage < usage)
439 break;
440 if (rec->selector > selector)
441 continue;
442 if (rec->selector < selector)
443 break;
444 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
445 continue;
446 break;
447 }
448
449 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
450 tlsa_free(t);
451 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
452 return -1;
453 }
454 dane->umask |= DANETLS_USAGE_BIT(usage);
455
456 return 1;
457}
458
c8feba72
BK		 459/*
460 * Return 0 if there is only one version configured and it was disabled
461 * at configure time. Return 1 otherwise.
462 */
463static int ssl_check_allowed_versions(int min_version, int max_version)
464{
465 int minisdtls = 0, maxisdtls = 0;
466
467 /* Figure out if we're doing DTLS versions or TLS versions */
468 if (min_version == DTLS1_BAD_VER
469 || min_version >> 8 == DTLS1_VERSION_MAJOR)
470 minisdtls = 1;
471 if (max_version == DTLS1_BAD_VER
472 || max_version >> 8 == DTLS1_VERSION_MAJOR)
473 maxisdtls = 1;
474 /* A wildcard version of 0 could be DTLS or TLS. */
475 if ((minisdtls && !maxisdtls && max_version != 0)
476 || (maxisdtls && !minisdtls && min_version != 0)) {
477 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
478 return 0;
479 }
480
481 if (minisdtls || maxisdtls) {
482 /* Do DTLS version checks. */
483 if (min_version == 0)
484 /* Ignore DTLS1_BAD_VER */
485 min_version = DTLS1_VERSION;
486 if (max_version == 0)
487 max_version = DTLS1_2_VERSION;
488#ifdef OPENSSL_NO_DTLS1_2
489 if (max_version == DTLS1_2_VERSION)
490 max_version = DTLS1_VERSION;
491#endif
492#ifdef OPENSSL_NO_DTLS1
493 if (min_version == DTLS1_VERSION)
494 min_version = DTLS1_2_VERSION;
495#endif
79b4444d
DMSP		 496 /* Done massaging versions; do the check. */
497 if (0
c8feba72
BK		 498#ifdef OPENSSL_NO_DTLS1
499 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
500 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
501#endif
502#ifdef OPENSSL_NO_DTLS1_2
503 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
504 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
505#endif
506 )
507 return 0;
508 } else {
509 /* Regular TLS version checks. */
79b4444d
DMSP		 510 if (min_version == 0)
511 min_version = SSL3_VERSION;
512 if (max_version == 0)
513 max_version = TLS1_3_VERSION;
c8feba72 514#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 515 if (max_version == TLS1_3_VERSION)
516 max_version = TLS1_2_VERSION;
c8feba72
BK		 517#endif
518#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 519 if (max_version == TLS1_2_VERSION)
520 max_version = TLS1_1_VERSION;
c8feba72
BK		 521#endif
522#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 523 if (max_version == TLS1_1_VERSION)
524 max_version = TLS1_VERSION;
c8feba72
BK		 525#endif
526#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 527 if (max_version == TLS1_VERSION)
528 max_version = SSL3_VERSION;
c8feba72
BK		 529#endif
530#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 531 if (min_version == SSL3_VERSION)
532 min_version = TLS1_VERSION;
c8feba72
BK		 533#endif
534#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 535 if (min_version == TLS1_VERSION)
536 min_version = TLS1_1_VERSION;
c8feba72
BK		 537#endif
538#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 539 if (min_version == TLS1_1_VERSION)
540 min_version = TLS1_2_VERSION;
c8feba72
BK		 541#endif
542#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 543 if (min_version == TLS1_2_VERSION)
544 min_version = TLS1_3_VERSION;
c8feba72 545#endif
79b4444d
DMSP		 546 /* Done massaging versions; do the check. */
547 if (0
c8feba72
BK		 548#ifdef OPENSSL_NO_SSL3
549 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
550#endif
551#ifdef OPENSSL_NO_TLS1
552 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
553#endif
554#ifdef OPENSSL_NO_TLS1_1
555 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
556#endif
557#ifdef OPENSSL_NO_TLS1_2
558 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
559#endif
560#ifdef OPENSSL_NO_TLS1_3
561 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
562#endif
563 )
564 return 0;
565 }
566 return 1;
567}
568
d31fb0b5
RS		 569static void clear_ciphers(SSL *s)
570{
571 /* clear the current cipher */
572 ssl_clear_cipher_ctx(s);
573 ssl_clear_hash_ctx(&s->read_hash);
574 ssl_clear_hash_ctx(&s->write_hash);
575}
576
4f43d0e7 577int SSL_clear(SSL *s)
0f113f3e 578{
0f113f3e
MC		 579 if (s->method == NULL) {
580 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 581 return 0;
0f113f3e 582 }
d02b48c6 583
0f113f3e
MC		 584 if (ssl_clear_bad_session(s)) {
585 SSL_SESSION_free(s->session);
586 s->session = NULL;
587 }
9368f865
MC		 588 SSL_SESSION_free(s->psksession);
589 s->psksession = NULL;
add8d0e9
MC		 590 OPENSSL_free(s->psksession_id);
591 s->psksession_id = NULL;
592 s->psksession_id_len = 0;
808d1601 593 s->hello_retry_request = 0;
d62bfb39 594
0f113f3e
MC		 595 s->error = 0;
596 s->hit = 0;
597 s->shutdown = 0;
d02b48c6 598
0f113f3e
MC		 599 if (s->renegotiate) {
600 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
601 return 0;
602 }
d02b48c6 603
fe3a3291 604 ossl_statem_clear(s);
413c4f45 605
0f113f3e
MC		 606 s->version = s->method->version;
607 s->client_version = s->version;
608 s->rwstate = SSL_NOTHING;
d02b48c6 609
25aaa98a
RS		 610 BUF_MEM_free(s->init_buf);
611 s->init_buf = NULL;
d31fb0b5 612 clear_ciphers(s);
0f113f3e 613 s->first_packet = 0;
d02b48c6 614
44c04a2e
MC		 615 s->key_update = SSL_KEY_UPDATE_NONE;
616
919ba009
VD		 617 /* Reset DANE verification result state */
618 s->dane.mdpth = -1;
619 s->dane.pdpth = -1;
620 X509_free(s->dane.mcert);
621 s->dane.mcert = NULL;
622 s->dane.mtlsa = NULL;
623
624 /* Clear the verification result peername */
625 X509_VERIFY_PARAM_move_peername(s->param, NULL);
626
0f113f3e
MC		 627 /*
628 * Check to see if we were changed into a different method, if so, revert
24252537 629 * back.
0f113f3e 630 */
24252537 631 if (s->method != s->ctx->method) {
0f113f3e
MC		 632 s->method->ssl_free(s);
633 s->method = s->ctx->method;
634 if (!s->method->ssl_new(s))
a89325e4 635 return 0;
b77f3ed1
MC		 636 } else {
637 if (!s->method->ssl_clear(s))
638 return 0;
639 }
33d23b87 640
af9752e5 641 RECORD_LAYER_clear(&s->rlayer);
33d23b87 642
a89325e4 643 return 1;
0f113f3e 644}
d02b48c6 645
4f43d0e7 646/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 647int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
648{
649 STACK_OF(SSL_CIPHER) *sk;
650
651 ctx->method = meth;
652
653 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
654 &(ctx->cipher_list_by_id),
655 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
656 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 657 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 658 return 0;
0f113f3e 659 }
208fb891 660 return 1;
0f113f3e 661}
d02b48c6 662
4f43d0e7 663SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 664{
665 SSL *s;
666
667 if (ctx == NULL) {
668 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 669 return NULL;
0f113f3e
MC		 670 }
671 if (ctx->method == NULL) {
672 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 673 return NULL;
0f113f3e
MC		 674 }
675
b51bce94 676 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 677 if (s == NULL)
678 goto err;
0f113f3e 679
e6b10c34 680 s->references = 1;
16203f7b 681 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 682 if (s->lock == NULL) {
683 OPENSSL_free(s);
684 s = NULL;
ae3947de 685 goto err;
e6b10c34 686 }
ae3947de
RS		 687
688 /*
689 * If not using the standard RAND (say for fuzzing), then don't use a
690 * chained DRBG.
691 */
692 if (RAND_get_rand_method() == RAND_OpenSSL()) {
c16de9d8
DMSP		 693 s->drbg =
694 RAND_DRBG_new(RAND_DRBG_NID, RAND_DRBG_FLAG_CTR_USE_DF,
a93ba405 695 RAND_DRBG_get0_public());
0b14a5b7 696 if (s->drbg == NULL
c16de9d8
DMSP		 697 || RAND_DRBG_instantiate(s->drbg,
698 (const unsigned char *) SSL_version_str,
e6b10c34 699 sizeof(SSL_version_str) - 1) == 0)
ae3947de 700 goto err;
16203f7b
AG		 701 }
702
c036e210 703 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 704
0f113f3e 705 s->options = ctx->options;
5ae4ceb9 706 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 707 s->min_proto_version = ctx->min_proto_version;
708 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 709 s->mode = ctx->mode;
710 s->max_cert_list = ctx->max_cert_list;
3fc8d856 711 s->max_early_data = ctx->max_early_data;
0f113f3e 712
2c382349
KR		 713 /*
714 * Earlier library versions used to copy the pointer to the CERT, not
715 * its contents; only when setting new parameters for the per-SSL
716 * copy, ssl_cert_new would be called (and the direct reference to
717 * the per-SSL_CTX settings would be lost, but those still were
718 * indirectly accessed for various purposes, and for that reason they
719 * used to be known as s->ctx->default_cert). Now we don't look at the
720 * SSL_CTX's CERT after having duplicated it once.
721 */
722 s->cert = ssl_cert_dup(ctx->cert);
723 if (s->cert == NULL)
724 goto err;
0f113f3e 725
52e1d7b1 726 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 727 s->msg_callback = ctx->msg_callback;
728 s->msg_callback_arg = ctx->msg_callback_arg;
729 s->verify_mode = ctx->verify_mode;
730 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 731 s->record_padding_cb = ctx->record_padding_cb;
732 s->record_padding_arg = ctx->record_padding_arg;
733 s->block_padding = ctx->block_padding;
0f113f3e 734 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 735 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 736 goto err;
0f113f3e
MC		 737 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
738 s->verify_callback = ctx->default_verify_callback;
739 s->generate_session_id = ctx->generate_session_id;
740
741 s->param = X509_VERIFY_PARAM_new();
a71edf3b 742 if (s->param == NULL)
0f113f3e
MC		 743 goto err;
744 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 745 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 746
747 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 748 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 749 s->split_send_fragment = ctx->split_send_fragment;
750 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 751 if (s->max_pipelines > 1)
752 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 753 if (ctx->default_read_buf_len > 0)
754 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 755
16203f7b 756 SSL_CTX_up_ref(ctx);
0f113f3e 757 s->ctx = ctx;
aff8c126
RS		 758 s->ext.debug_cb = 0;
759 s->ext.debug_arg = NULL;
760 s->ext.ticket_expected = 0;
761 s->ext.status_type = ctx->ext.status_type;
762 s->ext.status_expected = 0;
763 s->ext.ocsp.ids = NULL;
764 s->ext.ocsp.exts = NULL;
765 s->ext.ocsp.resp = NULL;
766 s->ext.ocsp.resp_len = 0;
16203f7b 767 SSL_CTX_up_ref(ctx);
222da979 768 s->session_ctx = ctx;
a230b26e 769#ifndef OPENSSL_NO_EC
aff8c126
RS		 770 if (ctx->ext.ecpointformats) {
771 s->ext.ecpointformats =
772 OPENSSL_memdup(ctx->ext.ecpointformats,
773 ctx->ext.ecpointformats_len);
774 if (!s->ext.ecpointformats)
0f113f3e 775 goto err;
aff8c126
RS		 776 s->ext.ecpointformats_len =
777 ctx->ext.ecpointformats_len;
778 }
779 if (ctx->ext.supportedgroups) {
780 s->ext.supportedgroups =
781 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 782 ctx->ext.supportedgroups_len
b92d7b62 783 * sizeof(*ctx->ext.supportedgroups));
aff8c126 784 if (!s->ext.supportedgroups)
0f113f3e 785 goto err;
aff8c126 786 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 787 }
a230b26e
EK		 788#endif
789#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 790 s->ext.npn = NULL;
a230b26e 791#endif
6f017a8f 792
aff8c126
RS		 793 if (s->ctx->ext.alpn) {
794 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
795 if (s->ext.alpn == NULL)
0f113f3e 796 goto err;
aff8c126
RS		 797 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
798 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 799 }
d02b48c6 800
696178ed 801 s->verified_chain = NULL;
0f113f3e 802 s->verify_result = X509_V_OK;
d02b48c6 803
a974e64a
MC		 804 s->default_passwd_callback = ctx->default_passwd_callback;
805 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
806
0f113f3e 807 s->method = ctx->method;
d02b48c6 808
44c04a2e
MC		 809 s->key_update = SSL_KEY_UPDATE_NONE;
810
0f113f3e
MC		 811 if (!s->method->ssl_new(s))
812 goto err;
d02b48c6 813
0f113f3e 814 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 815
61986d32 816 if (!SSL_clear(s))
69f68237 817 goto err;
58964a49 818
25a807bc
F		 819 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
820 goto err;
58964a49 821
ddac1974 822#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 823 s->psk_client_callback = ctx->psk_client_callback;
824 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 825#endif
f46184bd
MC		 826 s->psk_find_session_cb = ctx->psk_find_session_cb;
827 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 828
07bbc92c
MC		 829 s->job = NULL;
830
ed29e82a
RP		 831#ifndef OPENSSL_NO_CT
832 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 833 ctx->ct_validation_callback_arg))
ed29e82a
RP		 834 goto err;
835#endif
836
16203f7b 837 return s;
0f113f3e 838 err:
62adbcee 839 SSL_free(s);
0f113f3e 840 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 841 return NULL;
0f113f3e 842}
d02b48c6 843
e417070c
RS		 844int SSL_is_dtls(const SSL *s)
845{
846 return SSL_IS_DTLS(s) ? 1 : 0;
847}
848
c5ebfcab 849int SSL_up_ref(SSL *s)
a18a31e4 850{
16203f7b 851 int i;
c5ebfcab 852
2f545ae4 853 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 854 return 0;
855
856 REF_PRINT_COUNT("SSL", s);
857 REF_ASSERT_ISNT(i < 2);
858 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 859}
860
0f113f3e
MC		 861int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
862 unsigned int sid_ctx_len)
863{
cbe29648 864 if (sid_ctx_len > sizeof(ctx->sid_ctx)) {
0f113f3e
MC		 865 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
866 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
867 return 0;
868 }
869 ctx->sid_ctx_length = sid_ctx_len;
870 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 871
872 return 1;
0f113f3e 873}
4eb77b26 874
0f113f3e
MC		 875int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
876 unsigned int sid_ctx_len)
877{
878 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
879 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
880 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
881 return 0;
882 }
883 ssl->sid_ctx_length = sid_ctx_len;
884 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 885
886 return 1;
0f113f3e 887}
b4cadc6e 888
dc644fe2 889int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 890{
16203f7b 891 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 892 ctx->generate_session_id = cb;
16203f7b 893 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 894 return 1;
895}
dc644fe2
GT		 896
897int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 898{
16203f7b 899 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 900 ssl->generate_session_id = cb;
16203f7b 901 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 902 return 1;
903}
dc644fe2 904
f85c9904 905int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 906 unsigned int id_len)
907{
908 /*
909 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 910 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 911 * find if there's a session in the hash table that would conflict with
912 * any new session built out of this id/id_len and the ssl_version in use
913 * by this SSL.
914 */
915 SSL_SESSION r, *p;
916
cbe29648 917 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 918 return 0;
919
920 r.ssl_version = ssl->version;
921 r.session_id_length = id_len;
922 memcpy(r.session_id, id, id_len);
923
e2bb9b9b
TS		 924 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
925 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
926 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 927 return (p != NULL);
928}
dc644fe2 929
bb7cd4e3 930int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 931{
932 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
933}
bb7cd4e3
DSH		 934
935int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 936{
937 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
938}
926a56bf 939
bb7cd4e3 940int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 941{
942 return X509_VERIFY_PARAM_set_trust(s->param, trust);
943}
bb7cd4e3
DSH		 944
945int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 946{
947 return X509_VERIFY_PARAM_set_trust(s->param, trust);
948}
bb7cd4e3 949
919ba009
VD		 950int SSL_set1_host(SSL *s, const char *hostname)
951{
952 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
953}
954
955int SSL_add1_host(SSL *s, const char *hostname)
956{
957 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
958}
959
960void SSL_set_hostflags(SSL *s, unsigned int flags)
961{
962 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
963}
964
4588cb44 965const char *SSL_get0_peername(SSL *s)
919ba009
VD		 966{
967 return X509_VERIFY_PARAM_get0_peername(s->param);
968}
969
970int SSL_CTX_dane_enable(SSL_CTX *ctx)
971{
972 return dane_ctx_enable(&ctx->dane);
973}
974
5ae4ceb9
VD		 975unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
976{
977 unsigned long orig = ctx->dane.flags;
978
979 ctx->dane.flags |= flags;
980 return orig;
981}
982
983unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
984{
985 unsigned long orig = ctx->dane.flags;
986
987 ctx->dane.flags &= ~flags;
988 return orig;
989}
990
919ba009
VD		 991int SSL_dane_enable(SSL *s, const char *basedomain)
992{
b9aec69a 993 SSL_DANE *dane = &s->dane;
919ba009
VD		 994
995 if (s->ctx->dane.mdmax == 0) {
996 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
997 return 0;
998 }
999 if (dane->trecs != NULL) {
1000 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1001 return 0;
1002 }
1003
8d887efa
VD		 1004 /*
1005 * Default SNI name. This rejects empty names, while set1_host below
1006 * accepts them and disables host name checks. To avoid side-effects with
1007 * invalid input, set the SNI name first.
1008 */
aff8c126 1009 if (s->ext.hostname == NULL) {
dccd20d1 1010 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 1011 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1012 return -1;
8d887efa
VD		 1013 }
1014 }
1015
919ba009
VD		 1016 /* Primary RFC6125 reference identifier */
1017 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1018 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1019 return -1;
1020 }
1021
919ba009
VD		 1022 dane->mdpth = -1;
1023 dane->pdpth = -1;
1024 dane->dctx = &s->ctx->dane;
1025 dane->trecs = sk_danetls_record_new_null();
1026
1027 if (dane->trecs == NULL) {
1028 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1029 return -1;
1030 }
1031 return 1;
1032}
1033
5ae4ceb9
VD		 1034unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1035{
1036 unsigned long orig = ssl->dane.flags;
1037
1038 ssl->dane.flags |= flags;
1039 return orig;
1040}
1041
1042unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1043{
1044 unsigned long orig = ssl->dane.flags;
1045
1046 ssl->dane.flags &= ~flags;
1047 return orig;
1048}
1049
919ba009
VD		 1050int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1051{
b9aec69a 1052 SSL_DANE *dane = &s->dane;
919ba009 1053
c0a445a9 1054 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1055 return -1;
1056 if (dane->mtlsa) {
1057 if (mcert)
1058 *mcert = dane->mcert;
1059 if (mspki)
1060 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1061 }
1062 return dane->mdpth;
1063}
1064
1065int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1066 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1067{
b9aec69a 1068 SSL_DANE *dane = &s->dane;
919ba009 1069
c0a445a9 1070 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1071 return -1;
1072 if (dane->mtlsa) {
1073 if (usage)
1074 *usage = dane->mtlsa->usage;
1075 if (selector)
1076 *selector = dane->mtlsa->selector;
1077 if (mtype)
1078 *mtype = dane->mtlsa->mtype;
1079 if (data)
1080 *data = dane->mtlsa->data;
1081 if (dlen)
1082 *dlen = dane->mtlsa->dlen;
1083 }
1084 return dane->mdpth;
1085}
1086
b9aec69a 1087SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1088{
1089 return &s->dane;
1090}
1091
1092int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
a41a6120 1093 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 1094{
1095 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1096}
1097
a230b26e
EK		 1098int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1099 uint8_t ord)
919ba009
VD		 1100{
1101 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1102}
1103
ccf11751 1104int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1105{
1106 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1107}
ccf11751
DSH		 1108
1109int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1110{
1111 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1112}
ccf11751 1113
7af31968 1114X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1115{
1116 return ctx->param;
1117}
7af31968
DSH		 1118
1119X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1120{
1121 return ssl->param;
1122}
7af31968 1123
a5ee80b9 1124void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1125{
1126 ssl_cert_clear_certs(s->cert);
1127}
a5ee80b9 1128
4f43d0e7 1129void SSL_free(SSL *s)
0f113f3e
MC		 1130{
1131 int i;
58964a49 1132
0f113f3e
MC		 1133 if (s == NULL)
1134 return;
e03ddfae 1135
2f545ae4 1136 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1137 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1138 if (i > 0)
1139 return;
f3f1cf84 1140 REF_ASSERT_ISNT(i < 0);
d02b48c6 1141
222561fe 1142 X509_VERIFY_PARAM_free(s->param);
919ba009 1143 dane_final(&s->dane);
0f113f3e
MC		 1144 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1145
b77f3ed1 1146 /* Ignore return value */
2e7dc7cd
MC		 1147 ssl_free_wbio_buffer(s);
1148
65e2d672 1149 BIO_free_all(s->wbio);
325cfa85 1150 BIO_free_all(s->rbio);
0f113f3e 1151
25aaa98a 1152 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1153
1154 /* add extra stuff */
25aaa98a
RS		 1155 sk_SSL_CIPHER_free(s->cipher_list);
1156 sk_SSL_CIPHER_free(s->cipher_list_by_id);
0f113f3e
MC		 1157
1158 /* Make the next call work :-) */
1159 if (s->session != NULL) {
1160 ssl_clear_bad_session(s);
1161 SSL_SESSION_free(s->session);
1162 }
9368f865 1163 SSL_SESSION_free(s->psksession);
add8d0e9 1164 OPENSSL_free(s->psksession_id);
0f113f3e 1165
d31fb0b5 1166 clear_ciphers(s);
d02b48c6 1167
e0e920b1 1168 ssl_cert_free(s->cert);
0f113f3e 1169 /* Free up if allocated */
d02b48c6 1170
aff8c126 1171 OPENSSL_free(s->ext.hostname);
222da979 1172 SSL_CTX_free(s->session_ctx);
e481f9b9 1173#ifndef OPENSSL_NO_EC
aff8c126
RS		 1174 OPENSSL_free(s->ext.ecpointformats);
1175 OPENSSL_free(s->ext.supportedgroups);
a230b26e 1176#endif /* OPENSSL_NO_EC */
aff8c126 1177 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1178#ifndef OPENSSL_NO_OCSP
aff8c126 1179 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1180#endif
ed29e82a
RP		 1181#ifndef OPENSSL_NO_CT
1182 SCT_LIST_free(s->scts);
aff8c126 1183 OPENSSL_free(s->ext.scts);
ed29e82a 1184#endif
aff8c126
RS		 1185 OPENSSL_free(s->ext.ocsp.resp);
1186 OPENSSL_free(s->ext.alpn);
cfef5027 1187 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1188 OPENSSL_free(s->clienthello);
0f113f3e 1189
fa7c2637 1190 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
0f113f3e 1191
696178ed
DSH		 1192 sk_X509_pop_free(s->verified_chain, X509_free);
1193
0f113f3e
MC		 1194 if (s->method != NULL)
1195 s->method->ssl_free(s);
1196
f161995e 1197 RECORD_LAYER_release(&s->rlayer);
33d23b87 1198
e0e920b1 1199 SSL_CTX_free(s->ctx);
7c3908dd 1200
ff75a257
MC		 1201 ASYNC_WAIT_CTX_free(s->waitctx);
1202
e481f9b9 1203#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1204 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1205#endif
1206
e783bae2 1207#ifndef OPENSSL_NO_SRTP
25aaa98a 1208 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1209#endif
1210
ae3947de 1211 RAND_DRBG_free(s->drbg);
16203f7b
AG		 1212 CRYPTO_THREAD_lock_free(s->lock);
1213
0f113f3e
MC		 1214 OPENSSL_free(s);
1215}
1216
65e2d672 1217void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1218{
65e2d672 1219 BIO_free_all(s->rbio);
3ffbe008
MC		 1220 s->rbio = rbio;
1221}
1222
65e2d672 1223void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1224{
1225 /*
1226 * If the output buffering BIO is still in place, remove it
1227 */
2e7dc7cd
MC		 1228 if (s->bbio != NULL)
1229 s->wbio = BIO_pop(s->wbio);
1230
65e2d672 1231 BIO_free_all(s->wbio);
0f113f3e 1232 s->wbio = wbio;
2e7dc7cd
MC		 1233
1234 /* Re-attach |bbio| to the new |wbio|. */
1235 if (s->bbio != NULL)
1236 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1237}
d02b48c6 1238
3ffbe008
MC		 1239void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1240{
65e2d672
MC		 1241 /*
1242 * For historical reasons, this function has many different cases in
1243 * ownership handling.
1244 */
1245
1246 /* If nothing has changed, do nothing */
1247 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1248 return;
1249
1250 /*
1251 * If the two arguments are equal then one fewer reference is granted by the
1252 * caller than we want to take
1253 */
1254 if (rbio != NULL && rbio == wbio)
1255 BIO_up_ref(rbio);
1256
1257 /*
1258 * If only the wbio is changed only adopt one reference.
1259 */
1260 if (rbio == SSL_get_rbio(s)) {
1261 SSL_set0_wbio(s, wbio);
1262 return;
1263 }
1264 /*
1265 * There is an asymmetry here for historical reasons. If only the rbio is
1266 * changed AND the rbio and wbio were originally different, then we only
1267 * adopt one reference.
1268 */
1269 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1270 SSL_set0_rbio(s, rbio);
1271 return;
1272 }
1273
1274 /* Otherwise, adopt both references. */
1275 SSL_set0_rbio(s, rbio);
1276 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1277}
1278
0821bcd4 1279BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1280{
2e7dc7cd 1281 return s->rbio;
0f113f3e 1282}
d02b48c6 1283
0821bcd4 1284BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1285{
2e7dc7cd
MC		 1286 if (s->bbio != NULL) {
1287 /*
1288 * If |bbio| is active, the true caller-configured BIO is its
1289 * |next_bio|.
1290 */
1291 return BIO_next(s->bbio);
1292 }
1293 return s->wbio;
0f113f3e 1294}
d02b48c6 1295
0821bcd4 1296int SSL_get_fd(const SSL *s)
0f113f3e 1297{
2e7dc7cd 1298 return SSL_get_rfd(s);
0f113f3e 1299}
24cbf3ef 1300
0821bcd4 1301int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1302{
1303 int ret = -1;
1304 BIO *b, *r;
1305
1306 b = SSL_get_rbio(s);
1307 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1308 if (r != NULL)
1309 BIO_get_fd(r, &ret);
26a7d938 1310 return ret;
0f113f3e 1311}
d02b48c6 1312
0821bcd4 1313int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1314{
1315 int ret = -1;
1316 BIO *b, *r;
1317
1318 b = SSL_get_wbio(s);
1319 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1320 if (r != NULL)
1321 BIO_get_fd(r, &ret);
26a7d938 1322 return ret;
0f113f3e 1323}
24cbf3ef 1324
bc36ee62 1325#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1326int SSL_set_fd(SSL *s, int fd)
1327{
1328 int ret = 0;
1329 BIO *bio = NULL;
1330
1331 bio = BIO_new(BIO_s_socket());
1332
1333 if (bio == NULL) {
1334 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1335 goto err;
1336 }
1337 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1338 SSL_set_bio(s, bio, bio);
1339 ret = 1;
1340 err:
26a7d938 1341 return ret;
0f113f3e 1342}
d02b48c6 1343
0f113f3e
MC		 1344int SSL_set_wfd(SSL *s, int fd)
1345{
2e7dc7cd 1346 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1347
2e7dc7cd
MC		 1348 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1349 || (int)BIO_get_fd(rbio, NULL) != fd) {
1350 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1351
1352 if (bio == NULL) {
1353 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1354 return 0;
0f113f3e
MC		 1355 }
1356 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1357 SSL_set0_wbio(s, bio);
2e7dc7cd 1358 } else {
65e2d672
MC		 1359 BIO_up_ref(rbio);
1360 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1361 }
1362 return 1;
0f113f3e
MC		 1363}
1364
1365int SSL_set_rfd(SSL *s, int fd)
1366{
2e7dc7cd 1367 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1368
2e7dc7cd
MC		 1369 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1370 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1371 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1372
1373 if (bio == NULL) {
1374 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1375 return 0;
0f113f3e
MC		 1376 }
1377 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1378 SSL_set0_rbio(s, bio);
2e7dc7cd 1379 } else {
65e2d672
MC		 1380 BIO_up_ref(wbio);
1381 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1382 }
1383
1384 return 1;
0f113f3e
MC		 1385}
1386#endif
ca03109c
BM		 1387
1388/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1389size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1390{
1391 size_t ret = 0;
1392
1393 if (s->s3 != NULL) {
1394 ret = s->s3->tmp.finish_md_len;
1395 if (count > ret)
1396 count = ret;
1397 memcpy(buf, s->s3->tmp.finish_md, count);
1398 }
1399 return ret;
1400}
ca03109c
BM		 1401
1402/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1403size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1404{
1405 size_t ret = 0;
ca03109c 1406
0f113f3e
MC		 1407 if (s->s3 != NULL) {
1408 ret = s->s3->tmp.peer_finish_md_len;
1409 if (count > ret)
1410 count = ret;
1411 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1412 }
1413 return ret;
1414}
ca03109c 1415
0821bcd4 1416int SSL_get_verify_mode(const SSL *s)
0f113f3e 1417{
26a7d938 1418 return s->verify_mode;
0f113f3e 1419}
d02b48c6 1420
0821bcd4 1421int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1422{
1423 return X509_VERIFY_PARAM_get_depth(s->param);
1424}
7f89714e 1425
0f113f3e 1426int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1427 return s->verify_callback;
0f113f3e 1428}
d02b48c6 1429
0821bcd4 1430int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1431{
26a7d938 1432 return ctx->verify_mode;
0f113f3e 1433}
d02b48c6 1434
0821bcd4 1435int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1436{
1437 return X509_VERIFY_PARAM_get_depth(ctx->param);
1438}
1439
1440int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1441 return ctx->default_verify_callback;
0f113f3e
MC		 1442}
1443
1444void SSL_set_verify(SSL *s, int mode,
1445 int (*callback) (int ok, X509_STORE_CTX *ctx))
1446{
1447 s->verify_mode = mode;
1448 if (callback != NULL)
1449 s->verify_callback = callback;
1450}
1451
1452void SSL_set_verify_depth(SSL *s, int depth)
1453{
1454 X509_VERIFY_PARAM_set_depth(s->param, depth);
1455}
1456
1457void SSL_set_read_ahead(SSL *s, int yes)
1458{
52e1d7b1 1459 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1460}
d02b48c6 1461
0821bcd4 1462int SSL_get_read_ahead(const SSL *s)
0f113f3e 1463{
52e1d7b1 1464 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1465}
d02b48c6 1466
0821bcd4 1467int SSL_pending(const SSL *s)
0f113f3e 1468{
8b0e934a
MC		 1469 size_t pending = s->method->ssl_pending(s);
1470
0f113f3e
MC		 1471 /*
1472 * SSL_pending cannot work properly if read-ahead is enabled
1473 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1474 * impossible to fix since SSL_pending cannot report errors that may be
1475 * observed while scanning the new data. (Note that SSL_pending() is
1476 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1477 *
1478 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1479 * we just return INT_MAX.
0f113f3e 1480 */
348240c6 1481 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1482}
d02b48c6 1483
49580f25
MC		 1484int SSL_has_pending(const SSL *s)
1485{
1486 /*
1487 * Similar to SSL_pending() but returns a 1 to indicate that we have
1488 * unprocessed data available or 0 otherwise (as opposed to the number of
1489 * bytes available). Unlike SSL_pending() this will take into account
1490 * read_ahead data. A 1 return simply indicates that we have unprocessed
1491 * data. That data may not result in any application data, or we may fail
1492 * to parse the records for some reason.
1493 */
b8c49611 1494 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1495 return 1;
1496
1497 return RECORD_LAYER_read_pending(&s->rlayer);
1498}
1499
0821bcd4 1500X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1501{
1502 X509 *r;
d02b48c6 1503
0f113f3e
MC		 1504 if ((s == NULL) || (s->session == NULL))
1505 r = NULL;
1506 else
1507 r = s->session->peer;
d02b48c6 1508
0f113f3e 1509 if (r == NULL)
26a7d938 1510 return r;
d02b48c6 1511
05f0fb9f 1512 X509_up_ref(r);
0f113f3e 1513
26a7d938 1514 return r;
0f113f3e 1515}
d02b48c6 1516
0821bcd4 1517STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1518{
1519 STACK_OF(X509) *r;
1520
c34b0f99 1521 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1522 r = NULL;
1523 else
c34b0f99 1524 r = s->session->peer_chain;
0f113f3e
MC		 1525
1526 /*
1527 * If we are a client, cert_chain includes the peer's own certificate; if
1528 * we are a server, it does not.
1529 */
1530
26a7d938 1531 return r;
0f113f3e
MC		 1532}
1533
1534/*
1535 * Now in theory, since the calling process own 't' it should be safe to
1536 * modify. We need to be able to read f without being hassled
1537 */
17dd65e6 1538int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1539{
16203f7b 1540 int i;
0f113f3e 1541 /* Do we need to to SSL locking? */
61986d32 1542 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1543 return 0;
69f68237 1544 }
0f113f3e
MC		 1545
1546 /*
87d9cafa 1547 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1548 */
1549 if (t->method != f->method) {
919ba009
VD		 1550 t->method->ssl_free(t);
1551 t->method = f->method;
1552 if (t->method->ssl_new(t) == 0)
1553 return 0;
0f113f3e
MC		 1554 }
1555
2f545ae4 1556 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1557 ssl_cert_free(t->cert);
1558 t->cert = f->cert;
348240c6 1559 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1560 return 0;
69f68237 1561 }
17dd65e6
MC		 1562
1563 return 1;
0f113f3e 1564}
d02b48c6 1565
58964a49 1566/* Fix this so it checks all the valid key/cert options */
0821bcd4 1567int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1568{
a230b26e
EK		 1569 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1570 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1571 return 0;
0f113f3e
MC		 1572 }
1573 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1574 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1575 return 0;
0f113f3e 1576 }
26a7d938
K		 1577 return X509_check_private_key
1578 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1579}
d02b48c6 1580
58964a49 1581/* Fix this function so that it takes an optional type parameter */
0821bcd4 1582int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1583{
1584 if (ssl == NULL) {
1585 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1586 return 0;
0f113f3e 1587 }
0f113f3e
MC		 1588 if (ssl->cert->key->x509 == NULL) {
1589 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1590 return 0;
0f113f3e
MC		 1591 }
1592 if (ssl->cert->key->privatekey == NULL) {
1593 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1594 return 0;
0f113f3e 1595 }
26a7d938
K		 1596 return X509_check_private_key(ssl->cert->key->x509,
1597 ssl->cert->key->privatekey);
0f113f3e 1598}
d02b48c6 1599
07bbc92c
MC		 1600int SSL_waiting_for_async(SSL *s)
1601{
e8aa8b6c 1602 if (s->job)
82676094
MC		 1603 return 1;
1604
07bbc92c
MC		 1605 return 0;
1606}
1607
ff75a257 1608int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1609{
ff75a257
MC		 1610 ASYNC_WAIT_CTX *ctx = s->waitctx;
1611
1612 if (ctx == NULL)
1613 return 0;
1614 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1615}
f4da39d2 1616
ff75a257
MC		 1617int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1618 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1619{
1620 ASYNC_WAIT_CTX *ctx = s->waitctx;
1621
1622 if (ctx == NULL)
1623 return 0;
1624 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1625 numdelfds);
f4da39d2
MC		 1626}
1627
4f43d0e7 1628int SSL_accept(SSL *s)
0f113f3e 1629{
c4c32155 1630 if (s->handshake_func == NULL) {
0f113f3e
MC		 1631 /* Not properly initialized yet */
1632 SSL_set_accept_state(s);
07bbc92c 1633 }
add2f5ca
MC		 1634
1635 return SSL_do_handshake(s);
0f113f3e 1636}
d02b48c6 1637
4f43d0e7 1638int SSL_connect(SSL *s)
0f113f3e 1639{
c4c32155 1640 if (s->handshake_func == NULL) {
0f113f3e
MC		 1641 /* Not properly initialized yet */
1642 SSL_set_connect_state(s);
add2f5ca 1643 }
b31b04d9 1644
add2f5ca 1645 return SSL_do_handshake(s);
0f113f3e 1646}
d02b48c6 1647
0821bcd4 1648long SSL_get_default_timeout(const SSL *s)
0f113f3e 1649{
26a7d938 1650 return s->method->get_timeout();
0f113f3e
MC		 1651}
1652
7fecbf6f 1653static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1654 int (*func) (void *))
1655{
add2f5ca 1656 int ret;
ff75a257
MC		 1657 if (s->waitctx == NULL) {
1658 s->waitctx = ASYNC_WAIT_CTX_new();
1659 if (s->waitctx == NULL)
1660 return -1;
1661 }
e8aa8b6c 1662 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1663 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1664 case ASYNC_ERR:
1665 s->rwstate = SSL_NOTHING;
7fecbf6f 1666 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1667 return -1;
1668 case ASYNC_PAUSE:
1669 s->rwstate = SSL_ASYNC_PAUSED;
1670 return -1;
fc7f190c
MC		 1671 case ASYNC_NO_JOBS:
1672 s->rwstate = SSL_ASYNC_NO_JOBS;
1673 return -1;
add2f5ca
MC		 1674 case ASYNC_FINISH:
1675 s->job = NULL;
1676 return ret;
1677 default:
1678 s->rwstate = SSL_NOTHING;
7fecbf6f 1679 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1680 /* Shouldn't happen */
1681 return -1;
1682 }
1683}
07bbc92c 1684
add2f5ca 1685static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1686{
1687 struct ssl_async_args *args;
1688 SSL *s;
1689 void *buf;
348240c6 1690 size_t num;
07bbc92c
MC		 1691
1692 args = (struct ssl_async_args *)vargs;
1693 s = args->s;
1694 buf = args->buf;
1695 num = args->num;
ec447924
MC		 1696 switch (args->type) {
1697 case READFUNC:
7ee8627f 1698 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1699 case WRITEFUNC:
7ee8627f 1700 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1701 case OTHERFUNC:
1702 return args->f.func_other(s);
1703 }
1704 return -1;
07bbc92c
MC		 1705}
1706
4ee7d3f9 1707int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1708{
c4c32155 1709 if (s->handshake_func == NULL) {
4ee7d3f9 1710 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1711 return -1;
1712 }
1713
1714 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1715 s->rwstate = SSL_NOTHING;
4ee7d3f9 1716 return 0;
0f113f3e 1717 }
07bbc92c 1718
564547e4
MC		 1719 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1720 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1721 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1722 return 0;
1723 }
564547e4
MC		 1724 /*
1725 * If we are a client and haven't received the ServerHello etc then we
1726 * better do that
1727 */
1728 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1729
e8aa8b6c 1730 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1731 struct ssl_async_args args;
eda75751 1732 int ret;
add2f5ca
MC		 1733
1734 args.s = s;
1735 args.buf = buf;
1736 args.num = num;
ec447924
MC		 1737 args.type = READFUNC;
1738 args.f.func_read = s->method->ssl_read;
add2f5ca 1739
eda75751 1740 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1741 *readbytes = s->asyncrw;
eda75751 1742 return ret;
07bbc92c 1743 } else {
54105ddd 1744 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1745 }
0f113f3e
MC		 1746}
1747
4ee7d3f9 1748int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1749{
1750 int ret;
54105ddd 1751 size_t readbytes;
eda75751
MC		 1752
1753 if (num < 0) {
4ee7d3f9 1754 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1755 return -1;
1756 }
1757
4ee7d3f9 1758 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1759
1760 /*
1761 * The cast is safe here because ret should be <= INT_MAX because num is
1762 * <= INT_MAX
1763 */
1764 if (ret > 0)
54105ddd 1765 ret = (int)readbytes;
eda75751
MC		 1766
1767 return ret;
1768}
1769
4ee7d3f9
KR		 1770int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1771{
1772 int ret = ssl_read_internal(s, buf, num, readbytes);
1773
1774 if (ret < 0)
1775 ret = 0;
1776 return ret;
1777}
1778
f533fbd4 1779int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1780{
1781 int ret;
1782
1783 if (!s->server) {
f533fbd4
MC		 1784 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1785 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1786 }
1787
d781d247
MC		 1788 switch (s->early_data_state) {
1789 case SSL_EARLY_DATA_NONE:
1790 if (!SSL_in_before(s)) {
f533fbd4
MC		 1791 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1792 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1793 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1794 }
1795 /* fall through */
1796
1797 case SSL_EARLY_DATA_ACCEPT_RETRY:
1798 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1799 ret = SSL_accept(s);
1800 if (ret <= 0) {
1801 /* NBIO or error */
1802 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1803 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1804 }
1805 /* fall through */
1806
1807 case SSL_EARLY_DATA_READ_RETRY:
1808 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1809 s->early_data_state = SSL_EARLY_DATA_READING;
1810 ret = SSL_read_ex(s, buf, num, readbytes);
1811 /*
ef6c191b
MC		 1812 * State machine will update early_data_state to
1813 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1814 * message
d781d247
MC		 1815 */
1816 if (ret > 0 || (ret <= 0 && s->early_data_state
1817 != SSL_EARLY_DATA_FINISHED_READING)) {
1818 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1819 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1820 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1821 }
1822 } else {
1823 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1824 }
1825 *readbytes = 0;
f533fbd4 1826 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1827
1828 default:
f533fbd4
MC		 1829 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1830 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1831 }
1832}
1833
f5b519c4 1834int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1835{
1836 return s->ext.early_data;
1837}
1838
4ee7d3f9 1839static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1840{
c4c32155 1841 if (s->handshake_func == NULL) {
4ee7d3f9 1842 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1843 return -1;
1844 }
1845
1846 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1847 return 0;
0f113f3e 1848 }
e8aa8b6c 1849 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1850 struct ssl_async_args args;
eda75751 1851 int ret;
0f113f3e 1852
add2f5ca
MC		 1853 args.s = s;
1854 args.buf = buf;
1855 args.num = num;
ec447924
MC		 1856 args.type = READFUNC;
1857 args.f.func_read = s->method->ssl_peek;
07bbc92c 1858
eda75751 1859 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1860 *readbytes = s->asyncrw;
eda75751 1861 return ret;
add2f5ca 1862 } else {
54105ddd 1863 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1864 }
07bbc92c
MC		 1865}
1866
4ee7d3f9 1867int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1868{
1869 int ret;
4ee7d3f9 1870 size_t readbytes;
7ee8627f
MC		 1871
1872 if (num < 0) {
4ee7d3f9 1873 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1874 return -1;
1875 }
1876
4ee7d3f9 1877 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1878
1879 /*
1880 * The cast is safe here because ret should be <= INT_MAX because num is
1881 * <= INT_MAX
1882 */
1883 if (ret > 0)
4ee7d3f9 1884 ret = (int)readbytes;
7ee8627f
MC		 1885
1886 return ret;
1887}
1888
4ee7d3f9
KR		 1889
1890int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1891{
1892 int ret = ssl_peek_internal(s, buf, num, readbytes);
1893
1894 if (ret < 0)
1895 ret = 0;
1896 return ret;
1897}
1898
1899int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1900{
c4c32155 1901 if (s->handshake_func == NULL) {
4ee7d3f9 1902 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1903 return -1;
1904 }
1905
1906 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1907 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1908 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1909 return -1;
0f113f3e 1910 }
07bbc92c 1911
ef6c191b 1912 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1913 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1914 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1915 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1916 return 0;
0a5ece5b 1917 }
564547e4
MC		 1918 /* If we are a client and haven't sent the Finished we better do that */
1919 ossl_statem_check_finish_init(s, 1);
49e7fe12 1920
e8aa8b6c 1921 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1922 int ret;
add2f5ca
MC		 1923 struct ssl_async_args args;
1924
1925 args.s = s;
1926 args.buf = (void *)buf;
1927 args.num = num;
ec447924
MC		 1928 args.type = WRITEFUNC;
1929 args.f.func_write = s->method->ssl_write;
add2f5ca 1930
7ee8627f
MC		 1931 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1932 *written = s->asyncrw;
1933 return ret;
07bbc92c 1934 } else {
7ee8627f 1935 return s->method->ssl_write(s, buf, num, written);
07bbc92c 1936 }
0f113f3e 1937}
d02b48c6 1938
4ee7d3f9
KR		 1939int SSL_write(SSL *s, const void *buf, int num)
1940{
1941 int ret;
1942 size_t written;
1943
1944 if (num < 0) {
1945 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1946 return -1;
1947 }
1948
1949 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1950
1951 /*
1952 * The cast is safe here because ret should be <= INT_MAX because num is
1953 * <= INT_MAX
1954 */
1955 if (ret > 0)
1956 ret = (int)written;
1957
1958 return ret;
1959}
1960
1961int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1962{
1963 int ret = ssl_write_internal(s, buf, num, written);
1964
1965 if (ret < 0)
1966 ret = 0;
1967 return ret;
1968}
1969
0665b4ed 1970int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 1971{
a0cb628b 1972 int ret, early_data_state;
2a8db717 1973 size_t writtmp;
f7414b08 1974 uint32_t partialwrite;
49e7fe12 1975
49e7fe12
MC		 1976 switch (s->early_data_state) {
1977 case SSL_EARLY_DATA_NONE:
09f28874
MC		 1978 if (s->server
1979 || !SSL_in_before(s)
add8d0e9
MC		 1980 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1981 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 1982 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1983 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1984 return 0;
1985 }
1986 /* fall through */
1987
1988 case SSL_EARLY_DATA_CONNECT_RETRY:
1989 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1990 ret = SSL_connect(s);
1991 if (ret <= 0) {
1992 /* NBIO or error */
1993 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1994 return 0;
1995 }
1996 /* fall through */
1997
1998 case SSL_EARLY_DATA_WRITE_RETRY:
1999 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2000 /*
2001 * We disable partial write for early data because we don't keep track
2002 * of how many bytes we've written between the SSL_write_ex() call and
2003 * the flush if the flush needs to be retried)
2004 */
2005 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2006 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2007 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2008 s->mode |= partialwrite;
2a8db717
MC		 2009 if (!ret) {
2010 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2011 return ret;
2012 }
2013 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2014 /* fall through */
2015
2016 case SSL_EARLY_DATA_WRITE_FLUSH:
2017 /* The buffering BIO is still in place so we need to flush it */
2018 if (statem_flush(s) != 1)
2019 return 0;
2a8db717 2020 *written = num;
49e7fe12 2021 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2022 return 1;
49e7fe12 2023
116d0da5 2024 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2025 case SSL_EARLY_DATA_READ_RETRY:
2026 early_data_state = s->early_data_state;
09f28874
MC		 2027 /* We are a server writing to an unauthenticated client */
2028 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2029 ret = SSL_write_ex(s, buf, num, written);
bbea9f2c 2030 s->early_data_state = early_data_state;
09f28874
MC		 2031 return ret;
2032
49e7fe12 2033 default:
09f28874 2034 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2035 return 0;
2036 }
2037}
2038
4f43d0e7 2039int SSL_shutdown(SSL *s)
0f113f3e
MC		 2040{
2041 /*
2042 * Note that this function behaves differently from what one might
2043 * expect. Return values are 0 for no success (yet), 1 for success; but
2044 * calling it once is usually not enough, even if blocking I/O is used
2045 * (see ssl3_shutdown).
2046 */
2047
c4c32155 2048 if (s->handshake_func == NULL) {
0f113f3e
MC		 2049 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2050 return -1;
2051 }
2052
64f9f406 2053 if (!SSL_in_init(s)) {
e8aa8b6c 2054 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2055 struct ssl_async_args args;
ec447924 2056
64f9f406
MC		 2057 args.s = s;
2058 args.type = OTHERFUNC;
2059 args.f.func_other = s->method->ssl_shutdown;
ec447924 2060
64f9f406
MC		 2061 return ssl_start_async_job(s, &args, ssl_io_intern);
2062 } else {
2063 return s->method->ssl_shutdown(s);
2064 }
ec447924 2065 } else {
64f9f406
MC		 2066 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2067 return -1;
ec447924 2068 }
0f113f3e 2069}
d02b48c6 2070
4fbfe86a 2071int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2072{
f14afcaa 2073 /*
a9998e2f 2074 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2075 * negotiated, and that it is appropriate to call SSL_key_update() instead
2076 * of SSL_renegotiate().
2077 */
44c04a2e
MC		 2078 if (!SSL_IS_TLS13(s)) {
2079 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2080 return 0;
2081 }
2082
2083 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2084 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2085 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2086 return 0;
2087 }
2088
2089 if (!SSL_is_init_finished(s)) {
2090 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2091 return 0;
2092 }
2093
2094 ossl_statem_set_in_init(s, 1);
44c04a2e 2095 s->key_update = updatetype;
44c04a2e
MC		 2096 return 1;
2097}
2098
4fbfe86a 2099int SSL_get_key_update_type(SSL *s)
53d1d07d
MC		 2100{
2101 return s->key_update;
2102}
2103
4f43d0e7 2104int SSL_renegotiate(SSL *s)
0f113f3e 2105{
44c04a2e
MC		 2106 if (SSL_IS_TLS13(s)) {
2107 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2108 return 0;
44c04a2e 2109 }
cda6b998 2110
db0f35dd
TS		 2111 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2112 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2113 return 0;
2114 }
44959ee4 2115
db0f35dd 2116 s->renegotiate = 1;
0f113f3e 2117 s->new_session = 1;
44959ee4 2118
26a7d938 2119 return s->method->ssl_renegotiate(s);
0f113f3e 2120}
d02b48c6 2121
44959ee4 2122int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2123{
db0f35dd
TS		 2124 if (SSL_IS_TLS13(s)) {
2125 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2126 return 0;
db0f35dd 2127 }
cda6b998 2128
db0f35dd
TS		 2129 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2130 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2131 return 0;
2132 }
c519e89f 2133
db0f35dd 2134 s->renegotiate = 1;
0f113f3e 2135 s->new_session = 0;
c519e89f 2136
26a7d938 2137 return s->method->ssl_renegotiate(s);
0f113f3e 2138}
44959ee4 2139
6b0e9fac 2140int SSL_renegotiate_pending(SSL *s)
0f113f3e
MC		 2141{
2142 /*
2143 * becomes true when negotiation is requested; false again once a
2144 * handshake has finished
2145 */
2146 return (s->renegotiate != 0);
2147}
2148
2149long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2150{
2151 long l;
2152
2153 switch (cmd) {
2154 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2155 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2156 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2157 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2158 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2159 return l;
0f113f3e
MC		 2160
2161 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2162 s->msg_callback_arg = parg;
2163 return 1;
2164
0f113f3e
MC		 2165 case SSL_CTRL_MODE:
2166 return (s->mode |= larg);
2167 case SSL_CTRL_CLEAR_MODE:
2168 return (s->mode &= ~larg);
2169 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2170 return (long)s->max_cert_list;
0f113f3e 2171 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2172 if (larg < 0)
2173 return 0;
2174 l = (long)s->max_cert_list;
2175 s->max_cert_list = (size_t)larg;
2176 return l;
0f113f3e
MC		 2177 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2178 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2179 return 0;
2180 s->max_send_fragment = larg;
d102d9df
MC		 2181 if (s->max_send_fragment < s->split_send_fragment)
2182 s->split_send_fragment = s->max_send_fragment;
2183 return 1;
2184 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2185 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2186 return 0;
2187 s->split_send_fragment = larg;
0f113f3e 2188 return 1;
d102d9df
MC		 2189 case SSL_CTRL_SET_MAX_PIPELINES:
2190 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2191 return 0;
2192 s->max_pipelines = larg;
94777c9c
MC		 2193 if (larg > 1)
2194 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2195 return 1;
0f113f3e
MC		 2196 case SSL_CTRL_GET_RI_SUPPORT:
2197 if (s->s3)
2198 return s->s3->send_connection_binding;
2199 else
2200 return 0;
2201 case SSL_CTRL_CERT_FLAGS:
2202 return (s->cert->cert_flags |= larg);
2203 case SSL_CTRL_CLEAR_CERT_FLAGS:
2204 return (s->cert->cert_flags &= ~larg);
2205
2206 case SSL_CTRL_GET_RAW_CIPHERLIST:
2207 if (parg) {
76106e60 2208 if (s->s3->tmp.ciphers_raw == NULL)
0f113f3e 2209 return 0;
76106e60
DSH		 2210 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2211 return (int)s->s3->tmp.ciphers_rawlen;
e9fa092e
EK		 2212 } else {
2213 return TLS_CIPHER_LEN;
2214 }
c5364614 2215 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2216 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2217 return -1;
dccd20d1 2218 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2219 return 1;
2220 else
2221 return 0;
7946ab33 2222 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2223 return ssl_check_allowed_versions(larg, s->max_proto_version)
2224 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2225 &s->min_proto_version);
3edabd3c
CH		 2226 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2227 return s->min_proto_version;
7946ab33 2228 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2229 return ssl_check_allowed_versions(s->min_proto_version, larg)
2230 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2231 &s->max_proto_version);
3edabd3c
CH		 2232 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2233 return s->max_proto_version;
0f113f3e 2234 default:
26a7d938 2235 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2236 }
2237}
2238
2239long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2240{
2241 switch (cmd) {
2242 case SSL_CTRL_SET_MSG_CALLBACK:
2243 s->msg_callback = (void (*)
2244 (int write_p, int version, int content_type,
2245 const void *buf, size_t len, SSL *ssl,
2246 void *arg))(fp);
2247 return 1;
2248
2249 default:
26a7d938 2250 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2251 }
2252}
d3442bc7 2253
3c1d6bbc 2254LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2255{
2256 return ctx->sessions;
2257}
2258
2259long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2260{
2261 long l;
1fcb4e4d 2262 int i;
0f113f3e
MC		 2263 /* For some cases with ctx == NULL perform syntax checks */
2264 if (ctx == NULL) {
2265 switch (cmd) {
14536c8c 2266#ifndef OPENSSL_NO_EC
de4d764e
MC		 2267 case SSL_CTRL_SET_GROUPS_LIST:
2268 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2269#endif
2270 case SSL_CTRL_SET_SIGALGS_LIST:
2271 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2272 return tls1_set_sigalgs_list(NULL, parg, 0);
2273 default:
2274 return 0;
2275 }
2276 }
2277
2278 switch (cmd) {
2279 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2280 return ctx->read_ahead;
0f113f3e
MC		 2281 case SSL_CTRL_SET_READ_AHEAD:
2282 l = ctx->read_ahead;
2283 ctx->read_ahead = larg;
26a7d938 2284 return l;
0f113f3e
MC		 2285
2286 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2287 ctx->msg_callback_arg = parg;
2288 return 1;
2289
2290 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2291 return (long)ctx->max_cert_list;
0f113f3e 2292 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2293 if (larg < 0)
2294 return 0;
2295 l = (long)ctx->max_cert_list;
2296 ctx->max_cert_list = (size_t)larg;
2297 return l;
0f113f3e
MC		 2298
2299 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2300 if (larg < 0)
2301 return 0;
2302 l = (long)ctx->session_cache_size;
2303 ctx->session_cache_size = (size_t)larg;
2304 return l;
0f113f3e 2305 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2306 return (long)ctx->session_cache_size;
0f113f3e
MC		 2307 case SSL_CTRL_SET_SESS_CACHE_MODE:
2308 l = ctx->session_cache_mode;
2309 ctx->session_cache_mode = larg;
26a7d938 2310 return l;
0f113f3e 2311 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2312 return ctx->session_cache_mode;
0f113f3e
MC		 2313
2314 case SSL_CTRL_SESS_NUMBER:
26a7d938 2315 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2316 case SSL_CTRL_SESS_CONNECT:
1fcb4e4d
BK		 2317 return CRYPTO_atomic_read(&ctx->stats.sess_connect, &i, ctx->lock)
2318 ? i : 0;
0f113f3e 2319 case SSL_CTRL_SESS_CONNECT_GOOD:
1fcb4e4d
BK		 2320 return CRYPTO_atomic_read(&ctx->stats.sess_connect_good, &i, ctx->lock)
2321 ? i : 0;
0f113f3e 2322 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1fcb4e4d
BK		 2323 return CRYPTO_atomic_read(&ctx->stats.sess_connect_renegotiate, &i,
2324 ctx->lock)
2325 ? i : 0;
0f113f3e 2326 case SSL_CTRL_SESS_ACCEPT:
1fcb4e4d
BK		 2327 return CRYPTO_atomic_read(&ctx->stats.sess_accept, &i, ctx->lock)
2328 ? i : 0;
0f113f3e 2329 case SSL_CTRL_SESS_ACCEPT_GOOD:
1fcb4e4d
BK		 2330 return CRYPTO_atomic_read(&ctx->stats.sess_accept_good, &i, ctx->lock)
2331 ? i : 0;
0f113f3e 2332 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1fcb4e4d
BK		 2333 return CRYPTO_atomic_read(&ctx->stats.sess_accept_renegotiate, &i,
2334 ctx->lock)
2335 ? i : 0;
0f113f3e 2336 case SSL_CTRL_SESS_HIT:
1fcb4e4d
BK		 2337 return CRYPTO_atomic_read(&ctx->stats.sess_hit, &i, ctx->lock)
2338 ? i : 0;
0f113f3e 2339 case SSL_CTRL_SESS_CB_HIT:
1fcb4e4d
BK		 2340 return CRYPTO_atomic_read(&ctx->stats.sess_cb_hit, &i, ctx->lock)
2341 ? i : 0;
0f113f3e 2342 case SSL_CTRL_SESS_MISSES:
1fcb4e4d
BK		 2343 return CRYPTO_atomic_read(&ctx->stats.sess_miss, &i, ctx->lock)
2344 ? i : 0;
0f113f3e 2345 case SSL_CTRL_SESS_TIMEOUTS:
1fcb4e4d
BK		 2346 return CRYPTO_atomic_read(&ctx->stats.sess_timeout, &i, ctx->lock)
2347 ? i : 0;
0f113f3e 2348 case SSL_CTRL_SESS_CACHE_FULL:
1fcb4e4d
BK		 2349 return CRYPTO_atomic_read(&ctx->stats.sess_cache_full, &i, ctx->lock)
2350 ? i : 0;
0f113f3e
MC		 2351 case SSL_CTRL_MODE:
2352 return (ctx->mode |= larg);
2353 case SSL_CTRL_CLEAR_MODE:
2354 return (ctx->mode &= ~larg);
2355 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2356 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2357 return 0;
2358 ctx->max_send_fragment = larg;
d102d9df 2359 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2360 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2361 return 1;
d102d9df 2362 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2363 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2364 return 0;
2365 ctx->split_send_fragment = larg;
2366 return 1;
2367 case SSL_CTRL_SET_MAX_PIPELINES:
2368 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2369 return 0;
2370 ctx->max_pipelines = larg;
07077415 2371 return 1;
0f113f3e
MC		 2372 case SSL_CTRL_CERT_FLAGS:
2373 return (ctx->cert->cert_flags |= larg);
2374 case SSL_CTRL_CLEAR_CERT_FLAGS:
2375 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2376 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2377 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2378 && ssl_set_version_bound(ctx->method->version, (int)larg,
2379 &ctx->min_proto_version);
3edabd3c
CH		 2380 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2381 return ctx->min_proto_version;
7946ab33 2382 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2383 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2384 && ssl_set_version_bound(ctx->method->version, (int)larg,
2385 &ctx->max_proto_version);
3edabd3c
CH		 2386 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2387 return ctx->max_proto_version;
0f113f3e 2388 default:
26a7d938 2389 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2390 }
2391}
2392
2393long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2394{
2395 switch (cmd) {
2396 case SSL_CTRL_SET_MSG_CALLBACK:
2397 ctx->msg_callback = (void (*)
2398 (int write_p, int version, int content_type,
2399 const void *buf, size_t len, SSL *ssl,
2400 void *arg))(fp);
2401 return 1;
2402
2403 default:
26a7d938 2404 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2405 }
2406}
d3442bc7 2407
ccd86b68 2408int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2409{
90d9e49a
DSH		 2410 if (a->id > b->id)
2411 return 1;
2412 if (a->id < b->id)
2413 return -1;
2414 return 0;
0f113f3e
MC		 2415}
2416
2417int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2418 const SSL_CIPHER *const *bp)
2419{
90d9e49a
DSH		 2420 if ((*ap)->id > (*bp)->id)
2421 return 1;
2422 if ((*ap)->id < (*bp)->id)
2423 return -1;
2424 return 0;
0f113f3e 2425}
d02b48c6 2426
4f43d0e7 2427/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2428 * preference */
0821bcd4 2429STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2430{
2431 if (s != NULL) {
2432 if (s->cipher_list != NULL) {
26a7d938 2433 return s->cipher_list;
0f113f3e 2434 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2435 return s->ctx->cipher_list;
0f113f3e
MC		 2436 }
2437 }
26a7d938 2438 return NULL;
0f113f3e
MC		 2439}
2440
831eef2c
NM		 2441STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2442{
2443 if ((s == NULL) || (s->session == NULL) || !s->server)
2444 return NULL;
2445 return s->session->ciphers;
2446}
2447
8b8e5bed 2448STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2449{
2450 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2451 int i;
2452 ciphers = SSL_get_ciphers(s);
2453 if (!ciphers)
2454 return NULL;
2455 ssl_set_client_disabled(s);
2456 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2457 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2458 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2459 if (!sk)
2460 sk = sk_SSL_CIPHER_new_null();
2461 if (!sk)
2462 return NULL;
2463 if (!sk_SSL_CIPHER_push(sk, c)) {
2464 sk_SSL_CIPHER_free(sk);
2465 return NULL;
2466 }
2467 }
2468 }
2469 return sk;
2470}
8b8e5bed 2471
4f43d0e7 2472/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2473 * algorithm id */
f73e07cf 2474STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2475{
2476 if (s != NULL) {
2477 if (s->cipher_list_by_id != NULL) {
26a7d938 2478 return s->cipher_list_by_id;
0f113f3e 2479 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2480 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2481 }
2482 }
26a7d938 2483 return NULL;
0f113f3e 2484}
d02b48c6 2485
4f43d0e7 2486/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2487const char *SSL_get_cipher_list(const SSL *s, int n)
2488{
4a640fb6 2489 const SSL_CIPHER *c;
0f113f3e
MC		 2490 STACK_OF(SSL_CIPHER) *sk;
2491
2492 if (s == NULL)
26a7d938 2493 return NULL;
0f113f3e
MC		 2494 sk = SSL_get_ciphers(s);
2495 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2496 return NULL;
0f113f3e
MC		 2497 c = sk_SSL_CIPHER_value(sk, n);
2498 if (c == NULL)
26a7d938
K		 2499 return NULL;
2500 return c->name;
0f113f3e 2501}
d02b48c6 2502
9d5ac953
KY		 2503/** return a STACK of the ciphers available for the SSL_CTX and in order of
2504 * preference */
2505STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2506{
2507 if (ctx != NULL)
2508 return ctx->cipher_list;
2509 return NULL;
2510}
2511
25f923dd 2512/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2513int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2514{
2515 STACK_OF(SSL_CIPHER) *sk;
2516
2517 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2518 &ctx->cipher_list_by_id, str, ctx->cert);
2519 /*
2520 * ssl_create_cipher_list may return an empty stack if it was unable to
2521 * find a cipher matching the given rule string (for example if the rule
2522 * string specifies a cipher which has been disabled). This is not an
2523 * error as far as ssl_create_cipher_list is concerned, and hence
2524 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2525 */
2526 if (sk == NULL)
2527 return 0;
2528 else if (sk_SSL_CIPHER_num(sk) == 0) {
2529 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2530 return 0;
2531 }
2532 return 1;
2533}
d02b48c6 2534
4f43d0e7 2535/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2536int SSL_set_cipher_list(SSL *s, const char *str)
2537{
2538 STACK_OF(SSL_CIPHER) *sk;
2539
2540 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2541 &s->cipher_list_by_id, str, s->cert);
2542 /* see comment in SSL_CTX_set_cipher_list */
2543 if (sk == NULL)
2544 return 0;
2545 else if (sk_SSL_CIPHER_num(sk) == 0) {
2546 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2547 return 0;
2548 }
2549 return 1;
2550}
d02b48c6 2551
0f113f3e
MC		 2552char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2553{
2554 char *p;
2555 STACK_OF(SSL_CIPHER) *sk;
4a640fb6 2556 const SSL_CIPHER *c;
0f113f3e
MC		 2557 int i;
2558
2559 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
26a7d938 2560 return NULL;
0f113f3e
MC		 2561
2562 p = buf;
2563 sk = s->session->ciphers;
2564
2565 if (sk_SSL_CIPHER_num(sk) == 0)
2566 return NULL;
2567
2568 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2569 int n;
2570
2571 c = sk_SSL_CIPHER_value(sk, i);
2572 n = strlen(c->name);
2573 if (n + 1 > len) {
2574 if (p != buf)
2575 --p;
2576 *p = '\0';
2577 return buf;
2578 }
4cacc9d5 2579 strcpy(p, c->name);
0f113f3e
MC		 2580 p += n;
2581 *(p++) = ':';
2582 len -= n + 1;
2583 }
2584 p[-1] = '\0';
26a7d938 2585 return buf;
0f113f3e
MC		 2586}
2587
52b8dad8 2588/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2589 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2590 */
2591
f1fd4544 2592const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2593{
2594 if (type != TLSEXT_NAMETYPE_host_name)
2595 return NULL;
a13c20f6 2596
aff8c126
RS		 2597 return s->session && !s->ext.hostname ?
2598 s->session->ext.hostname : s->ext.hostname;
0f113f3e 2599}
ed3883d2 2600
f1fd4544 2601int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2602{
2603 if (s->session
aff8c126
RS		 2604 && (!s->ext.hostname ? s->session->
2605 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2606 return TLSEXT_NAMETYPE_host_name;
2607 return -1;
2608}
ee2ffc27 2609
0f113f3e
MC		 2610/*
2611 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2612 * expected that this function is called from the callback set by
0f113f3e
MC		 2613 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2614 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2615 * not included in the length. A byte string of length 0 is invalid. No byte
2616 * string may be truncated. The current, but experimental algorithm for
2617 * selecting the protocol is: 1) If the server doesn't support NPN then this
2618 * is indicated to the callback. In this case, the client application has to
2619 * abort the connection or have a default application level protocol. 2) If
2620 * the server supports NPN, but advertises an empty list then the client
f430ba31 2621 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2622 * fallback case was enacted. 3) Otherwise, the client finds the first
2623 * protocol in the server's list that it supports and selects this protocol.
2624 * This is because it's assumed that the server has better information about
2625 * which protocol a client should use. 4) If the client doesn't support any
2626 * of the server's advertised protocols, then this is treated the same as
2627 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2628 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2629 */
0f113f3e
MC		 2630int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2631 const unsigned char *server,
2632 unsigned int server_len,
a230b26e 2633 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2634{
2635 unsigned int i, j;
2636 const unsigned char *result;
2637 int status = OPENSSL_NPN_UNSUPPORTED;
2638
2639 /*
2640 * For each protocol in server preference order, see if we support it.
2641 */
2642 for (i = 0; i < server_len;) {
2643 for (j = 0; j < client_len;) {
2644 if (server[i] == client[j] &&
2645 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2646 /* We found a match */
2647 result = &server[i];
2648 status = OPENSSL_NPN_NEGOTIATED;
2649 goto found;
2650 }
2651 j += client[j];
2652 j++;
2653 }
2654 i += server[i];
2655 i++;
2656 }
2657
2658 /* There's no overlap between our protocols and the server's list. */
2659 result = client;
2660 status = OPENSSL_NPN_NO_OVERLAP;
2661
2662 found:
2663 *out = (unsigned char *)result + 1;
2664 *outlen = result[0];
2665 return status;
2666}
ee2ffc27 2667
e481f9b9 2668#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2669/*
2670 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2671 * client's requested protocol for this connection and returns 0. If the
2672 * client didn't request any protocol, then *data is set to NULL. Note that
2673 * the client can request any protocol it chooses. The value returned from
2674 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2675 * provided by the callback.
2676 */
0f113f3e
MC		 2677void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2678 unsigned *len)
2679{
aff8c126 2680 *data = s->ext.npn;
0f113f3e
MC		 2681 if (!*data) {
2682 *len = 0;
2683 } else {
aff8c126 2684 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2685 }
2686}
2687
2688/*
aff8c126 2689 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2690 * a TLS server needs a list of supported protocols for Next Protocol
2691 * Negotiation. The returned list must be in wire format. The list is
2692 * returned by setting |out| to point to it and |outlen| to its length. This
2693 * memory will not be modified, but one should assume that the SSL* keeps a
2694 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2695 * wishes to advertise. Otherwise, no such extension will be included in the
2696 * ServerHello.
2697 */
aff8c126 2698void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2699 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2700 void *arg)
0f113f3e 2701{
aff8c126
RS		 2702 ctx->ext.npn_advertised_cb = cb;
2703 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2704}
2705
2706/*
2707 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2708 * client needs to select a protocol from the server's provided list. |out|
2709 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2710 * The length of the protocol name must be written into |outlen|. The
2711 * server's advertised protocols are provided in |in| and |inlen|. The
2712 * callback can assume that |in| is syntactically valid. The client must
2713 * select a protocol. It is fatal to the connection if this callback returns
2714 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2715 */
aff8c126 2716void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2717 SSL_CTX_npn_select_cb_func cb,
aff8c126 2718 void *arg)
0f113f3e 2719{
aff8c126
RS		 2720 ctx->ext.npn_select_cb = cb;
2721 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2722}
e481f9b9 2723#endif
a398f821 2724
0f113f3e
MC		 2725/*
2726 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2727 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2728 * length-prefixed strings). Returns 0 on success.
2729 */
2730int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2731 unsigned int protos_len)
0f113f3e 2732{
aff8c126
RS		 2733 OPENSSL_free(ctx->ext.alpn);
2734 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2735 if (ctx->ext.alpn == NULL) {
72e9be3d 2736 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2737 return 1;
72e9be3d 2738 }
aff8c126 2739 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2740
2741 return 0;
2742}
2743
2744/*
2745 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2746 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2747 * length-prefixed strings). Returns 0 on success.
2748 */
2749int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2750 unsigned int protos_len)
0f113f3e 2751{
aff8c126
RS		 2752 OPENSSL_free(ssl->ext.alpn);
2753 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2754 if (ssl->ext.alpn == NULL) {
72e9be3d 2755 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2756 return 1;
72e9be3d 2757 }
aff8c126 2758 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2759
2760 return 0;
2761}
2762
2763/*
2764 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2765 * called during ClientHello processing in order to select an ALPN protocol
2766 * from the client's list of offered protocols.
2767 */
2768void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2769 SSL_CTX_alpn_select_cb_func cb,
2770 void *arg)
0f113f3e 2771{
aff8c126
RS		 2772 ctx->ext.alpn_select_cb = cb;
2773 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2774}
2775
2776/*
69687aa8
F		 2777 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2778 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2779 * (not including the leading length-prefix byte). If the server didn't
2780 * respond with a negotiated protocol then |*len| will be zero.
2781 */
6f017a8f 2782void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2783 unsigned int *len)
0f113f3e
MC		 2784{
2785 *data = NULL;
2786 if (ssl->s3)
2787 *data = ssl->s3->alpn_selected;
2788 if (*data == NULL)
2789 *len = 0;
2790 else
348240c6 2791 *len = (unsigned int)ssl->s3->alpn_selected_len;
0f113f3e
MC		 2792}
2793
74b4b494 2794int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2795 const char *label, size_t llen,
23cec1f4 2796 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2797 int use_context)
2798{
c8a18468 2799 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2800 return -1;
e0af0405 2801
0f113f3e 2802 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2803 llen, context,
2804 contextlen, use_context);
0f113f3e 2805}
e0af0405 2806
3c1d6bbc 2807static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2808{
bd5d27c1 2809 const unsigned char *session_id = a->session_id;
0f113f3e 2810 unsigned long l;
bd5d27c1
DB		 2811 unsigned char tmp_storage[4];
2812
2813 if (a->session_id_length < sizeof(tmp_storage)) {
2814 memset(tmp_storage, 0, sizeof(tmp_storage));
2815 memcpy(tmp_storage, a->session_id, a->session_id_length);
2816 session_id = tmp_storage;
2817 }
0f113f3e
MC		 2818
2819 l = (unsigned long)
bd5d27c1
DB		 2820 ((unsigned long)session_id[0]) |
2821 ((unsigned long)session_id[1] << 8L) |
2822 ((unsigned long)session_id[2] << 16L) |
2823 ((unsigned long)session_id[3] << 24L);
26a7d938 2824 return l;
0f113f3e
MC		 2825}
2826
2827/*
2828 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 2829 * coarser function than this one) is changed, ensure
0f113f3e
MC		 2830 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2831 * being able to construct an SSL_SESSION that will collide with any existing
2832 * session with a matching session ID.
2833 */
2834static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2835{
2836 if (a->ssl_version != b->ssl_version)
208fb891 2837 return 1;
0f113f3e 2838 if (a->session_id_length != b->session_id_length)
208fb891 2839 return 1;
26a7d938 2840 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 2841}
2842
2843/*
2844 * These wrapper functions should remain rather than redeclaring
d0fa136c 2845 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 2846 * variable. The reason is that the functions aren't static, they're exposed
2847 * via ssl.h.
2848 */
97b17195 2849
4ebb342f 2850SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 2851{
2852 SSL_CTX *ret = NULL;
2853
2854 if (meth == NULL) {
2855 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 2856 return NULL;
0f113f3e
MC		 2857 }
2858
0fc32b07
MC		 2859 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2860 return NULL;
7fa792d1 2861
0f113f3e
MC		 2862 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2863 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2864 goto err;
2865 }
b51bce94 2866 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 2867 if (ret == NULL)
2868 goto err;
2869
0f113f3e 2870 ret->method = meth;
7946ab33
KR		 2871 ret->min_proto_version = 0;
2872 ret->max_proto_version = 0;
0f113f3e
MC		 2873 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2874 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 2875 /* We take the system default. */
0f113f3e 2876 ret->session_timeout = meth->get_timeout();
0f113f3e 2877 ret->references = 1;
16203f7b
AG		 2878 ret->lock = CRYPTO_THREAD_lock_new();
2879 if (ret->lock == NULL) {
2880 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2881 OPENSSL_free(ret);
2882 return NULL;
2883 }
0f113f3e 2884 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 2885 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 2886 if ((ret->cert = ssl_cert_new()) == NULL)
2887 goto err;
2888
62d0577e 2889 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 2890 if (ret->sessions == NULL)
2891 goto err;
2892 ret->cert_store = X509_STORE_new();
2893 if (ret->cert_store == NULL)
2894 goto err;
ed29e82a
RP		 2895#ifndef OPENSSL_NO_CT
2896 ret->ctlog_store = CTLOG_STORE_new();
2897 if (ret->ctlog_store == NULL)
2898 goto err;
2899#endif
61986d32 2900 if (!ssl_create_cipher_list(ret->method,
a230b26e
EK		 2901 &ret->cipher_list, &ret->cipher_list_by_id,
2902 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2903 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 2904 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2905 goto err2;
2906 }
2907
2908 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 2909 if (ret->param == NULL)
0f113f3e
MC		 2910 goto err;
2911
2912 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2913 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2914 goto err2;
2915 }
2916 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2917 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2918 goto err2;
2919 }
2920
fa7c2637 2921 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 2922 goto err;
2923
25a807bc
F		 2924 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2925 goto err;
0f113f3e 2926
0f113f3e
MC		 2927 /* No compression for DTLS */
2928 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2929 ret->comp_methods = SSL_COMP_get_compression_methods();
2930
2931 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 2932 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 2933
4e2e1ec9 2934 /* Setup RFC5077 ticket keys */
aff8c126
RS		 2935 if ((RAND_bytes(ret->ext.tick_key_name,
2936 sizeof(ret->ext.tick_key_name)) <= 0)
2937 || (RAND_bytes(ret->ext.tick_hmac_key,
2938 sizeof(ret->ext.tick_hmac_key)) <= 0)
2939 || (RAND_bytes(ret->ext.tick_aes_key,
2940 sizeof(ret->ext.tick_aes_key)) <= 0))
0f113f3e 2941 ret->options |= SSL_OP_NO_TICKET;
6434abbf 2942
43054d3d
MC		 2943 if (RAND_bytes(ret->ext.cookie_hmac_key,
2944 sizeof(ret->ext.cookie_hmac_key)) <= 0)
2945 goto err;
2946
edc032b5 2947#ifndef OPENSSL_NO_SRP
61986d32 2948 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 2949 goto err;
edc032b5 2950#endif
4db9677b 2951#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 2952# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2953# define eng_strx(x) #x
2954# define eng_str(x) eng_strx(x)
2955 /* Use specific client engine automatically... ignore errors */
2956 {
2957 ENGINE *eng;
2958 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2959 if (!eng) {
2960 ERR_clear_error();
2961 ENGINE_load_builtin_engines();
2962 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2963 }
2964 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2965 ERR_clear_error();
2966 }
2967# endif
2968#endif
2969 /*
2970 * Default is to connect to non-RI servers. When RI is more widely
2971 * deployed might change this.
2972 */
2973 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 2974 /*
2975 * Disable compression by default to prevent CRIME. Applications can
2976 * re-enable compression by configuring
2977 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 2978 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
2979 * middlebox compatibility by default. This may be disabled by default in
2980 * a later OpenSSL version.
dc5744cb 2981 */
a5816a5a 2982 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 2983
aff8c126 2984 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 2985
bfa9a9af
MC		 2986 /*
2987 * Default max early data is a fully loaded single record. Could be split
2988 * across multiple records in practice
2989 */
2990 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2991
16203f7b 2992 return ret;
0f113f3e
MC		 2993 err:
2994 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2995 err2:
e0e920b1 2996 SSL_CTX_free(ret);
16203f7b 2997 return NULL;
0f113f3e 2998}
d02b48c6 2999
c5ebfcab 3000int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3001{
16203f7b 3002 int i;
c5ebfcab 3003
2f545ae4 3004 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3005 return 0;
3006
3007 REF_PRINT_COUNT("SSL_CTX", ctx);
3008 REF_ASSERT_ISNT(i < 2);
3009 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3010}
3011
4f43d0e7 3012void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3013{
3014 int i;
d02b48c6 3015
0f113f3e
MC		 3016 if (a == NULL)
3017 return;
d02b48c6 3018
2f545ae4 3019 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3020 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3021 if (i > 0)
3022 return;
f3f1cf84 3023 REF_ASSERT_ISNT(i < 0);
0f113f3e 3024
222561fe 3025 X509_VERIFY_PARAM_free(a->param);
919ba009 3026 dane_ctx_final(&a->dane);
0f113f3e
MC		 3027
3028 /*
3029 * Free internal session cache. However: the remove_cb() may reference
3030 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3031 * after the sessions were flushed.
3032 * As the ex_data handling routines might also touch the session cache,
3033 * the most secure solution seems to be: empty (flush) the cache, then
3034 * free ex_data, then finally free the cache.
3035 * (See ticket [openssl.org #212].)
3036 */
3037 if (a->sessions != NULL)
3038 SSL_CTX_flush_sessions(a, 0);
3039
3040 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3041 lh_SSL_SESSION_free(a->sessions);
222561fe 3042 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3043#ifndef OPENSSL_NO_CT
3044 CTLOG_STORE_free(a->ctlog_store);
3045#endif
25aaa98a
RS		 3046 sk_SSL_CIPHER_free(a->cipher_list);
3047 sk_SSL_CIPHER_free(a->cipher_list_by_id);
e0e920b1 3048 ssl_cert_free(a->cert);
fa7c2637 3049 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
222561fe 3050 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3051 a->comp_methods = NULL;
e783bae2 3052#ifndef OPENSSL_NO_SRTP
25aaa98a 3053 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3054#endif
edc032b5 3055#ifndef OPENSSL_NO_SRP
0f113f3e 3056 SSL_CTX_SRP_CTX_free(a);
edc032b5 3057#endif
bdfe932d 3058#ifndef OPENSSL_NO_ENGINE
7c96dbcd 3059 ENGINE_finish(a->client_cert_engine);
ddac1974 3060#endif
8671b898 3061
e481f9b9 3062#ifndef OPENSSL_NO_EC
aff8c126
RS		 3063 OPENSSL_free(a->ext.ecpointformats);
3064 OPENSSL_free(a->ext.supportedgroups);
8671b898 3065#endif
aff8c126 3066 OPENSSL_free(a->ext.alpn);
8671b898 3067
16203f7b
AG		 3068 CRYPTO_THREAD_lock_free(a->lock);
3069
0f113f3e
MC		 3070 OPENSSL_free(a);
3071}
d02b48c6 3072
3ae76679 3073void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3074{
3075 ctx->default_passwd_callback = cb;
3076}
3077
3078void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3079{
3080 ctx->default_passwd_callback_userdata = u;
3081}
3082
0c452abc
CH		 3083pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3084{
3085 return ctx->default_passwd_callback;
3086}
3087
3088void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3089{
3090 return ctx->default_passwd_callback_userdata;
3091}
3092
a974e64a
MC		 3093void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3094{
3095 s->default_passwd_callback = cb;
3096}
3097
3098void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3099{
3100 s->default_passwd_callback_userdata = u;
3101}
3102
0c452abc
CH		 3103pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3104{
3105 return s->default_passwd_callback;
3106}
3107
3108void *SSL_get_default_passwd_cb_userdata(SSL *s)
3109{
3110 return s->default_passwd_callback_userdata;
3111}
3112
0f113f3e
MC		 3113void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3114 int (*cb) (X509_STORE_CTX *, void *),
3115 void *arg)
3116{
3117 ctx->app_verify_callback = cb;
3118 ctx->app_verify_arg = arg;
3119}
3120
3121void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3122 int (*cb) (int, X509_STORE_CTX *))
3123{
3124 ctx->verify_mode = mode;
3125 ctx->default_verify_callback = cb;
3126}
3127
3128void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3129{
3130 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3131}
3132
a230b26e 3133void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3134{
3135 ssl_cert_set_cert_cb(c->cert, cb, arg);
3136}
3137
3138void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3139{
3140 ssl_cert_set_cert_cb(s->cert, cb, arg);
3141}
18d71588 3142
2cf28d61 3143void ssl_set_masks(SSL *s)
0f113f3e 3144{
6383d316 3145 CERT *c = s->cert;
f7d53487 3146 uint32_t *pvalid = s->s3->tmp.valid_flags;
bc71f910 3147 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3148 unsigned long mask_k, mask_a;
10bf4fc2 3149#ifndef OPENSSL_NO_EC
361a1191 3150 int have_ecc_cert, ecdsa_ok;
14536c8c 3151#endif
0f113f3e
MC		 3152 if (c == NULL)
3153 return;
d02b48c6 3154
bc36ee62 3155#ifndef OPENSSL_NO_DH
0f113f3e 3156 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3157#else
361a1191 3158 dh_tmp = 0;
d02b48c6
RE		 3159#endif
3160
d0ff28f8 3161 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3162 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3163 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3164#ifndef OPENSSL_NO_EC
6383d316 3165 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3166#endif
0f113f3e
MC		 3167 mask_k = 0;
3168 mask_a = 0;
0e1dba93 3169
d02b48c6 3170#ifdef CIPHER_DEBUG
b7557ccf
AG		 3171 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3172 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e
MC		 3173#endif
3174
2a9b9654 3175#ifndef OPENSSL_NO_GOST
4020c0b3 3176 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3177 mask_k |= SSL_kGOST;
3178 mask_a |= SSL_aGOST12;
3179 }
4020c0b3 3180 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3181 mask_k |= SSL_kGOST;
3182 mask_a |= SSL_aGOST12;
3183 }
4020c0b3 3184 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3185 mask_k |= SSL_kGOST;
3186 mask_a |= SSL_aGOST01;
3187 }
2a9b9654 3188#endif
0f113f3e 3189
361a1191 3190 if (rsa_enc)
0f113f3e 3191 mask_k |= SSL_kRSA;
d02b48c6 3192
0f113f3e
MC		 3193 if (dh_tmp)
3194 mask_k |= SSL_kDHE;
d02b48c6 3195
6aaa29fb
DSH		 3196 /*
3197 * If we only have an RSA-PSS certificate allow RSA authentication
3198 * if TLS 1.2 and peer supports it.
3199 */
3200
3201 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3202 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3203 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3204 mask_a |= SSL_aRSA;
d02b48c6 3205
0f113f3e
MC		 3206 if (dsa_sign) {
3207 mask_a |= SSL_aDSS;
0f113f3e 3208 }
d02b48c6 3209
0f113f3e 3210 mask_a |= SSL_aNULL;
d02b48c6 3211
0f113f3e
MC		 3212 /*
3213 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3214 * depending on the key usage extension.
3215 */
14536c8c 3216#ifndef OPENSSL_NO_EC
0f113f3e 3217 if (have_ecc_cert) {
a8d8e06b 3218 uint32_t ex_kusage;
4020c0b3 3219 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3220 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3221 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3222 ecdsa_ok = 0;
c7c46256 3223 if (ecdsa_ok)
0f113f3e 3224 mask_a |= SSL_aECDSA;
0f113f3e 3225 }
b2021556
DSH		 3226 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3227 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3228 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3229 && TLS1_get_version(s) == TLS1_2_VERSION)
3230 mask_a |= SSL_aECDSA;
14536c8c 3231#endif
ea262260 3232
10bf4fc2 3233#ifndef OPENSSL_NO_EC
fe6ef247 3234 mask_k |= SSL_kECDHE;
ea262260 3235#endif
ddac1974
NL		 3236
3237#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3238 mask_k |= SSL_kPSK;
3239 mask_a |= SSL_aPSK;
526f94ad
DSH		 3240 if (mask_k & SSL_kRSA)
3241 mask_k |= SSL_kRSAPSK;
3242 if (mask_k & SSL_kDHE)
3243 mask_k |= SSL_kDHEPSK;
3244 if (mask_k & SSL_kECDHE)
3245 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3246#endif
3247
4d69f9e6
DSH		 3248 s->s3->tmp.mask_k = mask_k;
3249 s->s3->tmp.mask_a = mask_a;
0f113f3e 3250}
d02b48c6 3251
ef236ec3
DSH		 3252#ifndef OPENSSL_NO_EC
3253
a2f9200f 3254int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3255{
ce0c1f2b 3256 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3257 /* key usage, if present, must allow signing */
ce0c1f2b 3258 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3259 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3260 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3261 return 0;
3262 }
3263 }
0f113f3e
MC		 3264 return 1; /* all checks are ok */
3265}
ea262260 3266
ef236ec3
DSH		 3267#endif
3268
a398f821 3269int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3270 size_t *serverinfo_length)
3271{
a497cf25 3272 CERT_PKEY *cpk = s->s3->tmp.cert;
0f113f3e
MC		 3273 *serverinfo_length = 0;
3274
a497cf25 3275 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3276 return 0;
3277
a497cf25
DSH		 3278 *serverinfo = cpk->serverinfo;
3279 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3280 return 1;
3281}
0f113f3e
MC		 3282
3283void ssl_update_cache(SSL *s, int mode)
3284{
3285 int i;
3286
3287 /*
3288 * If the session_id_length is 0, we are not supposed to cache it, and it
3289 * would be rather hard to do anyway :-)
3290 */
3291 if (s->session->session_id_length == 0)
3292 return;
3293
3294 i = s->session_ctx->session_cache_mode;
5d61491c
MC		 3295 if ((i & mode) != 0
3296 && (!s->hit || SSL_IS_TLS13(s))
3297 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
0f113f3e 3298 || SSL_CTX_add_session(s->session_ctx, s->session))
5d61491c 3299 && s->session_ctx->new_session_cb != NULL) {
16203f7b 3300 SSL_SESSION_up_ref(s->session);
0f113f3e
MC		 3301 if (!s->session_ctx->new_session_cb(s, s->session))
3302 SSL_SESSION_free(s->session);
3303 }
3304
3305 /* auto flush every 255 connections */
3306 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
1fcb4e4d
BK		 3307 int *stat, val;
3308 if (mode & SSL_SESS_CACHE_CLIENT)
3309 stat = &s->session_ctx->stats.sess_connect_good;
3310 else
3311 stat = &s->session_ctx->stats.sess_accept_good;
3312 if (CRYPTO_atomic_read(stat, &val, s->session_ctx->lock)
3313 && (val & 0xff) == 0xff)
0f113f3e 3314 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3315 }
3316}
d02b48c6 3317
ba168244 3318const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
0f113f3e
MC		 3319{
3320 return ctx->method;
3321}
ba168244 3322
4ebb342f 3323const SSL_METHOD *SSL_get_ssl_method(SSL *s)
0f113f3e 3324{
26a7d938 3325 return s->method;
0f113f3e 3326}
d02b48c6 3327
4ebb342f 3328int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3329{
0f113f3e
MC		 3330 int ret = 1;
3331
3332 if (s->method != meth) {
919ba009 3333 const SSL_METHOD *sm = s->method;
a230b26e 3334 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3335
919ba009 3336 if (sm->version == meth->version)
0f113f3e
MC		 3337 s->method = meth;
3338 else {
919ba009 3339 sm->ssl_free(s);
0f113f3e
MC		 3340 s->method = meth;
3341 ret = s->method->ssl_new(s);
3342 }
3343
919ba009 3344 if (hf == sm->ssl_connect)
0f113f3e 3345 s->handshake_func = meth->ssl_connect;
919ba009 3346 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3347 s->handshake_func = meth->ssl_accept;
3348 }
26a7d938 3349 return ret;
0f113f3e
MC		 3350}
3351
3352int SSL_get_error(const SSL *s, int i)
3353{
3354 int reason;
3355 unsigned long l;
3356 BIO *bio;
3357
3358 if (i > 0)
26a7d938 3359 return SSL_ERROR_NONE;
0f113f3e
MC		 3360
3361 /*
3362 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3363 * where we do encode the error
3364 */
3365 if ((l = ERR_peek_error()) != 0) {
3366 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3367 return SSL_ERROR_SYSCALL;
0f113f3e 3368 else
26a7d938 3369 return SSL_ERROR_SSL;
0f113f3e
MC		 3370 }
3371
8051ab2b
MC		 3372 if (SSL_want_read(s)) {
3373 bio = SSL_get_rbio(s);
3374 if (BIO_should_read(bio))
26a7d938 3375 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3376 else if (BIO_should_write(bio))
3377 /*
3378 * This one doesn't make too much sense ... We never try to write
3379 * to the rbio, and an application program where rbio and wbio
3380 * are separate couldn't even know what it should wait for.
3381 * However if we ever set s->rwstate incorrectly (so that we have
3382 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3383 * wbio *are* the same, this test works around that bug; so it
3384 * might be safer to keep it.
3385 */
26a7d938 3386 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3387 else if (BIO_should_io_special(bio)) {
3388 reason = BIO_get_retry_reason(bio);
3389 if (reason == BIO_RR_CONNECT)
26a7d938 3390 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3391 else if (reason == BIO_RR_ACCEPT)
26a7d938 3392 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3393 else
26a7d938 3394 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3395 }
8051ab2b 3396 }
0f113f3e 3397
8051ab2b 3398 if (SSL_want_write(s)) {
69687aa8 3399 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3400 bio = s->wbio;
3401 if (BIO_should_write(bio))
26a7d938 3402 return SSL_ERROR_WANT_WRITE;
8051ab2b 3403 else if (BIO_should_read(bio))
2e7dc7cd 3404 /*
8051ab2b 3405 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3406 */
26a7d938 3407 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3408 else if (BIO_should_io_special(bio)) {
3409 reason = BIO_get_retry_reason(bio);
3410 if (reason == BIO_RR_CONNECT)
26a7d938 3411 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3412 else if (reason == BIO_RR_ACCEPT)
26a7d938 3413 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3414 else
26a7d938 3415 return SSL_ERROR_SYSCALL;
0f113f3e 3416 }
07bbc92c 3417 }
6b1bb98f 3418 if (SSL_want_x509_lookup(s))
26a7d938 3419 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3420 if (SSL_want_async(s))
8051ab2b 3421 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3422 if (SSL_want_async_job(s))
8051ab2b 3423 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3424 if (SSL_want_client_hello_cb(s))
3425 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3426
3427 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3428 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3429 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3430
26a7d938 3431 return SSL_ERROR_SYSCALL;
0f113f3e 3432}
d02b48c6 3433
add2f5ca
MC		 3434static int ssl_do_handshake_intern(void *vargs)
3435{
3436 struct ssl_async_args *args;
3437 SSL *s;
3438
3439 args = (struct ssl_async_args *)vargs;
3440 s = args->s;
3441
3442 return s->handshake_func(s);
3443}
3444
4f43d0e7 3445int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3446{
3447 int ret = 1;
3448
3449 if (s->handshake_func == NULL) {
3450 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3451 return -1;
0f113f3e
MC		 3452 }
3453
3eaa4170 3454 ossl_statem_check_finish_init(s, -1);
49e7fe12 3455
c7f47786 3456 s->method->ssl_renegotiate_check(s, 0);
0f113f3e 3457
190b9a03
PY		 3458 if (SSL_is_server(s)) {
3459 /* clear SNI settings at server-side */
3460 OPENSSL_free(s->ext.hostname);
3461 s->ext.hostname = NULL;
3462 }
3463
0f113f3e 3464 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3465 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3466 struct ssl_async_args args;
3467
3468 args.s = s;
3469
7fecbf6f 3470 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3471 } else {
3472 ret = s->handshake_func(s);
3473 }
0f113f3e 3474 }
add2f5ca 3475 return ret;
0f113f3e
MC		 3476}
3477
4f43d0e7 3478void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3479{
3480 s->server = 1;
3481 s->shutdown = 0;
fe3a3291 3482 ossl_statem_clear(s);
0f113f3e 3483 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3484 clear_ciphers(s);
0f113f3e 3485}
d02b48c6 3486
4f43d0e7 3487void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3488{
3489 s->server = 0;
3490 s->shutdown = 0;
fe3a3291 3491 ossl_statem_clear(s);
0f113f3e 3492 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3493 clear_ciphers(s);
0f113f3e 3494}
d02b48c6 3495
4f43d0e7 3496int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3497{
3498 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3499 return 0;
0f113f3e 3500}
d02b48c6 3501
41a15c4f 3502int ssl_undefined_void_function(void)
0f113f3e
MC		 3503{
3504 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3505 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3506 return 0;
0f113f3e 3507}
41a15c4f 3508
0821bcd4 3509int ssl_undefined_const_function(const SSL *s)
0f113f3e 3510{
26a7d938 3511 return 0;
0f113f3e 3512}
0821bcd4 3513
2b8fa1d5 3514const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3515{
3516 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3517 return NULL;
0f113f3e 3518}
d02b48c6 3519
3eb2aff4 3520const char *ssl_protocol_to_string(int version)
7d650072 3521{
2abacef1
MC		 3522 switch(version)
3523 {
3524 case TLS1_3_VERSION:
582a17d6 3525 return "TLSv1.3";
2abacef1
MC		 3526
3527 case TLS1_2_VERSION:
7d650072 3528 return "TLSv1.2";
2abacef1
MC		 3529
3530 case TLS1_1_VERSION:
7d650072 3531 return "TLSv1.1";
2abacef1
MC		 3532
3533 case TLS1_VERSION:
ee3a6c64 3534 return "TLSv1";
2abacef1
MC		 3535
3536 case SSL3_VERSION:
7d650072 3537 return "SSLv3";
2abacef1
MC		 3538
3539 case DTLS1_BAD_VER:
7d650072 3540 return "DTLSv0.9";
2abacef1
MC		 3541
3542 case DTLS1_VERSION:
7d650072 3543 return "DTLSv1";
2abacef1
MC		 3544
3545 case DTLS1_2_VERSION:
7d650072 3546 return "DTLSv1.2";
2abacef1
MC		 3547
3548 default:
3549 return "unknown";
3550 }
0f113f3e 3551}
d02b48c6 3552
7d650072
KR		 3553const char *SSL_get_version(const SSL *s)
3554{
3eb2aff4 3555 return ssl_protocol_to_string(s->version);
7d650072
KR		 3556}
3557
4f43d0e7 3558SSL *SSL_dup(SSL *s)
0f113f3e
MC		 3559{
3560 STACK_OF(X509_NAME) *sk;
3561 X509_NAME *xn;
3562 SSL *ret;
3563 int i;
3564
919ba009
VD		 3565 /* If we're not quiescent, just up_ref! */
3566 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3567 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3568 return s;
3569 }
3570
3571 /*
3572 * Otherwise, copy configuration state, and session if set.
3573 */
0f113f3e 3574 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3575 return NULL;
0f113f3e 3576
0f113f3e 3577 if (s->session != NULL) {
919ba009
VD		 3578 /*
3579 * Arranges to share the same session via up_ref. This "copies"
3580 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3581 */
61986d32 3582 if (!SSL_copy_session_id(ret, s))
17dd65e6 3583 goto err;
0f113f3e
MC		 3584 } else {
3585 /*
3586 * No session has been established yet, so we have to expect that
3587 * s->cert or ret->cert will be changed later -- they should not both
3588 * point to the same object, and thus we can't use
3589 * SSL_copy_session_id.
3590 */
919ba009
VD		 3591 if (!SSL_set_ssl_method(ret, s->method))
3592 goto err;
0f113f3e
MC		 3593
3594 if (s->cert != NULL) {
e0e920b1 3595 ssl_cert_free(ret->cert);
0f113f3e
MC		 3596 ret->cert = ssl_cert_dup(s->cert);
3597 if (ret->cert == NULL)
3598 goto err;
3599 }
3600
348240c6
MC		 3601 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3602 (int)s->sid_ctx_length))
69f68237 3603 goto err;
0f113f3e
MC		 3604 }
3605
9f6b22b8
VD		 3606 if (!ssl_dane_dup(ret, s))
3607 goto err;
919ba009 3608 ret->version = s->version;
0f113f3e
MC		 3609 ret->options = s->options;
3610 ret->mode = s->mode;
3611 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3612 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3613 ret->msg_callback = s->msg_callback;
3614 ret->msg_callback_arg = s->msg_callback_arg;
3615 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3616 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3617 ret->generate_session_id = s->generate_session_id;
3618
3619 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3620
0f113f3e
MC		 3621 /* copy app data, a little dangerous perhaps */
3622 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3623 goto err;
3624
3625 /* setup rbio, and wbio */
3626 if (s->rbio != NULL) {
3627 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3628 goto err;
3629 }
3630 if (s->wbio != NULL) {
3631 if (s->wbio != s->rbio) {
3632 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3633 goto err;
65e2d672
MC		 3634 } else {
3635 BIO_up_ref(ret->rbio);
0f113f3e 3636 ret->wbio = ret->rbio;
65e2d672 3637 }
0f113f3e 3638 }
919ba009 3639
0f113f3e 3640 ret->server = s->server;
919ba009
VD		 3641 if (s->handshake_func) {
3642 if (s->server)
3643 SSL_set_accept_state(ret);
3644 else
3645 SSL_set_connect_state(ret);
3646 }
0f113f3e 3647 ret->shutdown = s->shutdown;
0f113f3e
MC		 3648 ret->hit = s->hit;
3649
a974e64a
MC		 3650 ret->default_passwd_callback = s->default_passwd_callback;
3651 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3652
0f113f3e
MC		 3653 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3654
3655 /* dup the cipher_list and cipher_list_by_id stacks */
3656 if (s->cipher_list != NULL) {
3657 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3658 goto err;
3659 }
3660 if (s->cipher_list_by_id != NULL)
3661 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3662 == NULL)
3663 goto err;
3664
3665 /* Dup the client_CA list */
fa7c2637
DSH		 3666 if (s->ca_names != NULL) {
3667 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
0f113f3e 3668 goto err;
fa7c2637 3669 ret->ca_names = sk;
0f113f3e
MC		 3670 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3671 xn = sk_X509_NAME_value(sk, i);
3672 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3673 X509_NAME_free(xn);
3674 goto err;
3675 }
3676 }
3677 }
66696478 3678 return ret;
0f113f3e 3679
0f113f3e 3680 err:
66696478
RS		 3681 SSL_free(ret);
3682 return NULL;
0f113f3e 3683}
d02b48c6 3684
4f43d0e7 3685void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3686{
3687 if (s->enc_read_ctx != NULL) {
846ec07d 3688 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3689 s->enc_read_ctx = NULL;
3690 }
3691 if (s->enc_write_ctx != NULL) {
846ec07d 3692 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3693 s->enc_write_ctx = NULL;
3694 }
09b6c2ef 3695#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3696 COMP_CTX_free(s->expand);
3697 s->expand = NULL;
3698 COMP_CTX_free(s->compress);
3699 s->compress = NULL;
0f113f3e
MC		 3700#endif
3701}
d02b48c6 3702
0821bcd4 3703X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3704{
3705 if (s->cert != NULL)
26a7d938 3706 return s->cert->key->x509;
0f113f3e 3707 else
26a7d938 3708 return NULL;
0f113f3e 3709}
d02b48c6 3710
a25f9adc 3711EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3712{
3713 if (s->cert != NULL)
26a7d938 3714 return s->cert->key->privatekey;
0f113f3e 3715 else
26a7d938 3716 return NULL;
0f113f3e 3717}
d02b48c6 3718
a25f9adc 3719X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 3720{
3721 if (ctx->cert != NULL)
3722 return ctx->cert->key->x509;
3723 else
3724 return NULL;
3725}
a25f9adc
DSH		 3726
3727EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 3728{
3729 if (ctx->cert != NULL)
3730 return ctx->cert->key->privatekey;
3731 else
3732 return NULL;
3733}
a25f9adc 3734
babb3798 3735const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 3736{
3737 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 3738 return s->session->cipher;
3739 return NULL;
0f113f3e
MC		 3740}
3741
0aed6e44
BK		 3742const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3743{
3744 return s->s3->tmp.new_cipher;
3745}
3746
377dcdba 3747const COMP_METHOD *SSL_get_current_compression(SSL *s)
0f113f3e 3748{
9a555706
RS		 3749#ifndef OPENSSL_NO_COMP
3750 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3751#else
3752 return NULL;
3753#endif
0f113f3e 3754}
377dcdba
RL		 3755
3756const COMP_METHOD *SSL_get_current_expansion(SSL *s)
0f113f3e 3757{
9a555706
RS		 3758#ifndef OPENSSL_NO_COMP
3759 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3760#else
3761 return NULL;
0f113f3e 3762#endif
9a555706 3763}
0f113f3e 3764
46417569 3765int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 3766{
3767 BIO *bbio;
3768
2e7dc7cd
MC		 3769 if (s->bbio != NULL) {
3770 /* Already buffered. */
3771 return 1;
0f113f3e 3772 }
46417569 3773
2e7dc7cd
MC		 3774 bbio = BIO_new(BIO_f_buffer());
3775 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3776 BIO_free(bbio);
0f113f3e 3777 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 3778 return 0;
0f113f3e 3779 }
2e7dc7cd
MC		 3780 s->bbio = bbio;
3781 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 3782
3783 return 1;
0f113f3e 3784}
413c4f45 3785
b77f3ed1 3786int ssl_free_wbio_buffer(SSL *s)
0f113f3e 3787{
62adbcee 3788 /* callers ensure s is never null */
0f113f3e 3789 if (s->bbio == NULL)
b77f3ed1 3790 return 1;
0f113f3e 3791
2e7dc7cd 3792 s->wbio = BIO_pop(s->wbio);
b77f3ed1
MC		 3793 if (!ossl_assert(s->wbio != NULL))
3794 return 0;
0f113f3e
MC		 3795 BIO_free(s->bbio);
3796 s->bbio = NULL;
b77f3ed1
MC		 3797
3798 return 1;
0f113f3e
MC		 3799}
3800
3801void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3802{
3803 ctx->quiet_shutdown = mode;
3804}
58964a49 3805
0821bcd4 3806int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 3807{
26a7d938 3808 return ctx->quiet_shutdown;
0f113f3e 3809}
58964a49 3810
0f113f3e
MC		 3811void SSL_set_quiet_shutdown(SSL *s, int mode)
3812{
3813 s->quiet_shutdown = mode;
3814}
58964a49 3815
0821bcd4 3816int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 3817{
26a7d938 3818 return s->quiet_shutdown;
0f113f3e 3819}
58964a49 3820
0f113f3e
MC		 3821void SSL_set_shutdown(SSL *s, int mode)
3822{
3823 s->shutdown = mode;
3824}
58964a49 3825
0821bcd4 3826int SSL_get_shutdown(const SSL *s)
0f113f3e 3827{
6546e9b2 3828 return s->shutdown;
0f113f3e 3829}
58964a49 3830
0821bcd4 3831int SSL_version(const SSL *s)
0f113f3e 3832{
6546e9b2
AG		 3833 return s->version;
3834}
3835
3836int SSL_client_version(const SSL *s)
3837{
3838 return s->client_version;
0f113f3e 3839}
58964a49 3840
0821bcd4 3841SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 3842{
6546e9b2 3843 return ssl->ctx;
0f113f3e
MC		 3844}
3845
3846SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3847{
24a0d393 3848 CERT *new_cert;
0f113f3e
MC		 3849 if (ssl->ctx == ctx)
3850 return ssl->ctx;
0f113f3e 3851 if (ctx == NULL)
222da979 3852 ctx = ssl->session_ctx;
24a0d393
KR		 3853 new_cert = ssl_cert_dup(ctx->cert);
3854 if (new_cert == NULL) {
3855 return NULL;
0f113f3e 3856 }
21181889
MC		 3857
3858 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3859 ssl_cert_free(new_cert);
3860 return NULL;
3861 }
3862
24a0d393
KR		 3863 ssl_cert_free(ssl->cert);
3864 ssl->cert = new_cert;
0f113f3e
MC		 3865
3866 /*
3867 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3868 * so setter APIs must prevent invalid lengths from entering the system.
3869 */
380a522f
MC		 3870 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3871 return NULL;
0f113f3e
MC		 3872
3873 /*
3874 * If the session ID context matches that of the parent SSL_CTX,
3875 * inherit it from the new SSL_CTX as well. If however the context does
3876 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3877 * leave it unchanged.
3878 */
3879 if ((ssl->ctx != NULL) &&
3880 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3881 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3882 ssl->sid_ctx_length = ctx->sid_ctx_length;
3883 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3884 }
3885
16203f7b 3886 SSL_CTX_up_ref(ctx);
a230b26e 3887 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 3888 ssl->ctx = ctx;
3889
16203f7b 3890 return ssl->ctx;
0f113f3e 3891}
ed3883d2 3892
4f43d0e7 3893int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 3894{
26a7d938 3895 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 3896}
58964a49 3897
d84a7b20
MC		 3898int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3899{
3900 X509_LOOKUP *lookup;
3901
3902 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3903 if (lookup == NULL)
3904 return 0;
3905 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3906
3907 /* Clear any errors if the default directory does not exist */
3908 ERR_clear_error();
3909
3910 return 1;
3911}
3912
3913int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3914{
3915 X509_LOOKUP *lookup;
3916
3917 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3918 if (lookup == NULL)
3919 return 0;
3920
3921 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3922
3923 /* Clear any errors if the default file does not exist */
3924 ERR_clear_error();
3925
3926 return 1;
3927}
3928
303c0028 3929int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 3930 const char *CApath)
3931{
26a7d938 3932 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
0f113f3e 3933}
58964a49 3934
45d87a1f 3935void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 3936 void (*cb) (const SSL *ssl, int type, int val))
3937{
3938 ssl->info_callback = cb;
3939}
3940
3941/*
3942 * One compiler (Diab DCC) doesn't like argument names in returned function
3943 * pointer.
3944 */
3945void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3946 int /* type */ ,
3947 int /* val */ ) {
3948 return ssl->info_callback;
3949}
58964a49 3950
0f113f3e
MC		 3951void SSL_set_verify_result(SSL *ssl, long arg)
3952{
3953 ssl->verify_result = arg;
3954}
58964a49 3955
0821bcd4 3956long SSL_get_verify_result(const SSL *ssl)
0f113f3e 3957{
26a7d938 3958 return ssl->verify_result;
0f113f3e
MC		 3959}
3960
d9f1c639 3961size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3962{
6b8f5d0d 3963 if (outlen == 0)
858618e7
NM		 3964 return sizeof(ssl->s3->client_random);
3965 if (outlen > sizeof(ssl->s3->client_random))
3966 outlen = sizeof(ssl->s3->client_random);
3967 memcpy(out, ssl->s3->client_random, outlen);
d9f1c639 3968 return outlen;
858618e7
NM		 3969}
3970
d9f1c639 3971size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3972{
6b8f5d0d 3973 if (outlen == 0)
858618e7
NM		 3974 return sizeof(ssl->s3->server_random);
3975 if (outlen > sizeof(ssl->s3->server_random))
3976 outlen = sizeof(ssl->s3->server_random);
3977 memcpy(out, ssl->s3->server_random, outlen);
d9f1c639 3978 return outlen;
858618e7
NM		 3979}
3980
d9f1c639 3981size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 3982 unsigned char *out, size_t outlen)
858618e7 3983{
d9f1c639
MC		 3984 if (outlen == 0)
3985 return session->master_key_length;
8c1a5343 3986 if (outlen > session->master_key_length)
858618e7
NM		 3987 outlen = session->master_key_length;
3988 memcpy(out, session->master_key, outlen);
d9f1c639 3989 return outlen;
858618e7
NM		 3990}
3991
725b0f1e 3992int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 3993 size_t len)
3994{
3995 if (len > sizeof(sess->master_key))
3996 return 0;
3997
3998 memcpy(sess->master_key, in, len);
3999 sess->master_key_length = len;
911d63f2
MC		 4000 return 1;
4001}
4002
4003
0f113f3e
MC		 4004int SSL_set_ex_data(SSL *s, int idx, void *arg)
4005{
26a7d938 4006 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4007}
4008
4009void *SSL_get_ex_data(const SSL *s, int idx)
4010{
26a7d938 4011 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4012}
4013
0f113f3e
MC		 4014int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4015{
26a7d938 4016 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4017}
4018
4019void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4020{
26a7d938 4021 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4022}
58964a49 4023
0821bcd4 4024X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4025{
26a7d938 4026 return ctx->cert_store;
0f113f3e 4027}
413c4f45 4028
0f113f3e
MC		 4029void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4030{
222561fe 4031 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4032 ctx->cert_store = store;
4033}
413c4f45 4034
b50052db
TS		 4035void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4036{
4037 if (store != NULL)
4038 X509_STORE_up_ref(store);
4039 SSL_CTX_set_cert_store(ctx, store);
4040}
4041
0821bcd4 4042int SSL_want(const SSL *s)
0f113f3e 4043{
26a7d938 4044 return s->rwstate;
0f113f3e 4045}
413c4f45 4046
0f113f3e 4047/**
4f43d0e7
BL		 4048 * \brief Set the callback for generating temporary DH keys.
4049 * \param ctx the SSL context.
4050 * \param dh the callback
4051 */
4052
bc36ee62 4053#ifndef OPENSSL_NO_DH
0f113f3e
MC		 4054void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4055 DH *(*dh) (SSL *ssl, int is_export,
4056 int keylength))
4057{
4058 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4059}
f8c3c05d 4060
0f113f3e
MC		 4061void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4062 int keylength))
4063{
4064 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4065}
79df9d62 4066#endif
15d21c2d 4067
ddac1974
NL		 4068#ifndef OPENSSL_NO_PSK
4069int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4070{
4071 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 4072 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4073 return 0;
4074 }
df6da24b 4075 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4076 if (identity_hint != NULL) {
7644a9ae 4077 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4078 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4079 return 0;
4080 } else
df6da24b 4081 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4082 return 1;
4083}
ddac1974
NL		 4084
4085int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4086{
4087 if (s == NULL)
4088 return 0;
4089
0f113f3e
MC		 4090 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4091 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4092 return 0;
4093 }
df6da24b 4094 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4095 if (identity_hint != NULL) {
7644a9ae 4096 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4097 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4098 return 0;
4099 } else
df6da24b 4100 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4101 return 1;
4102}
ddac1974
NL		 4103
4104const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4105{
4106 if (s == NULL || s->session == NULL)
4107 return NULL;
26a7d938 4108 return s->session->psk_identity_hint;
0f113f3e 4109}
ddac1974
NL		 4110
4111const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4112{
4113 if (s == NULL || s->session == NULL)
4114 return NULL;
26a7d938 4115 return s->session->psk_identity;
0f113f3e 4116}
7806f3dd 4117
8cbfcc70 4118void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4119{
4120 s->psk_client_callback = cb;
4121}
7806f3dd 4122
8cbfcc70 4123void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4124{
4125 ctx->psk_client_callback = cb;
4126}
7806f3dd 4127
8cbfcc70 4128void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4129{
4130 s->psk_server_callback = cb;
4131}
7806f3dd 4132
8cbfcc70 4133void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4134{
4135 ctx->psk_server_callback = cb;
4136}
4137#endif
4138
f46184bd
MC		 4139void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4140{
4141 s->psk_find_session_cb = cb;
4142}
4143
4144void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4145 SSL_psk_find_session_cb_func cb)
4146{
4147 ctx->psk_find_session_cb = cb;
4148}
4149
4150void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4151{
4152 s->psk_use_session_cb = cb;
4153}
4154
4155void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4156 SSL_psk_use_session_cb_func cb)
4157{
4158 ctx->psk_use_session_cb = cb;
4159}
4160
0f113f3e
MC		 4161void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4162 void (*cb) (int write_p, int version,
4163 int content_type, const void *buf,
4164 size_t len, SSL *ssl, void *arg))
4165{
4166 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4167}
4168
4169void SSL_set_msg_callback(SSL *ssl,
4170 void (*cb) (int write_p, int version,
4171 int content_type, const void *buf,
4172 size_t len, SSL *ssl, void *arg))
4173{
4174 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4175}
a661b653 4176
7c2d4fee 4177void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4178 int (*cb) (SSL *ssl,
4179 int
4180 is_forward_secure))
4181{
4182 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4183 (void (*)(void))cb);
4184}
4185
7c2d4fee 4186void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4187 int (*cb) (SSL *ssl,
4188 int is_forward_secure))
4189{
4190 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4191 (void (*)(void))cb);
4192}
4193
c649d10d
TS		 4194void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4195 size_t (*cb) (SSL *ssl, int type,
4196 size_t len, void *arg))
4197{
4198 ctx->record_padding_cb = cb;
4199}
4200
4201void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4202{
4203 ctx->record_padding_arg = arg;
4204}
4205
4206void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4207{
4208 return ctx->record_padding_arg;
4209}
4210
4211int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4212{
4213 /* block size of 0 or 1 is basically no padding */
4214 if (block_size == 1)
4215 ctx->block_padding = 0;
4216 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4217 ctx->block_padding = block_size;
4218 else
4219 return 0;
4220 return 1;
4221}
4222
4223void SSL_set_record_padding_callback(SSL *ssl,
4224 size_t (*cb) (SSL *ssl, int type,
4225 size_t len, void *arg))
4226{
4227 ssl->record_padding_cb = cb;
4228}
4229
4230void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4231{
4232 ssl->record_padding_arg = arg;
4233}
4234
4235void *SSL_get_record_padding_callback_arg(SSL *ssl)
4236{
4237 return ssl->record_padding_arg;
4238}
4239
4240int SSL_set_block_padding(SSL *ssl, size_t block_size)
4241{
4242 /* block size of 0 or 1 is basically no padding */
4243 if (block_size == 1)
4244 ssl->block_padding = 0;
4245 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4246 ssl->block_padding = block_size;
4247 else
4248 return 0;
4249 return 1;
4250}
4251
0f113f3e
MC		 4252/*
4253 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4254 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4255 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4256 * Returns the newly allocated ctx;
8671b898 4257 */
b948e2c5 4258
0f113f3e 4259EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4260{
0f113f3e 4261 ssl_clear_hash_ctx(hash);
bfb0641f 4262 *hash = EVP_MD_CTX_new();
5f3d93e4 4263 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4264 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4265 *hash = NULL;
4266 return NULL;
4267 }
0f113f3e 4268 return *hash;
b948e2c5 4269}
0f113f3e
MC		 4270
4271void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4272{
4273
0d9824c1 4274 EVP_MD_CTX_free(*hash);
0f113f3e 4275 *hash = NULL;
b948e2c5 4276}
a661b653 4277
48fbcbac 4278/* Retrieve handshake hashes */
8c1a5343
MC		 4279int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4280 size_t *hashlen)
48fbcbac 4281{
6e59a892 4282 EVP_MD_CTX *ctx = NULL;
28ba2541 4283 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
8c1a5343
MC		 4284 int hashleni = EVP_MD_CTX_size(hdgst);
4285 int ret = 0;
4286
f63a17d6
MC		 4287 if (hashleni < 0 || (size_t)hashleni > outlen) {
4288 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4289 ERR_R_INTERNAL_ERROR);
28ba2541 4290 goto err;
f63a17d6 4291 }
8c1a5343 4292
bfb0641f 4293 ctx = EVP_MD_CTX_new();
8c1a5343 4294 if (ctx == NULL)
6e59a892 4295 goto err;
8c1a5343 4296
6e59a892 4297 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4298 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4299 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4300 ERR_R_INTERNAL_ERROR);
8c1a5343 4301 goto err;
f63a17d6 4302 }
8c1a5343
MC		 4303
4304 *hashlen = hashleni;
4305
4306 ret = 1;
48fbcbac 4307 err:
bfb0641f 4308 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4309 return ret;
4310}
4311
b577fd0b 4312int SSL_session_reused(SSL *s)
0f113f3e
MC		 4313{
4314 return s->hit;
4315}
08557cf2 4316
69443116 4317int SSL_is_server(const SSL *s)
0f113f3e
MC		 4318{
4319 return s->server;
4320}
87adf1fa 4321
47153c72
RS		 4322#if OPENSSL_API_COMPAT < 0x10100000L
4323void SSL_set_debug(SSL *s, int debug)
4324{
4325 /* Old function was do-nothing anyway... */
4326 (void)s;
4327 (void)debug;
4328}
4329#endif
4330
b362ccab 4331void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4332{
4333 s->cert->sec_level = level;
4334}
b362ccab
DSH		 4335
4336int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4337{
4338 return s->cert->sec_level;
4339}
b362ccab 4340
0f113f3e 4341void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4342 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4343 int op, int bits, int nid,
4344 void *other, void *ex))
0f113f3e
MC		 4345{
4346 s->cert->sec_cb = cb;
4347}
b362ccab 4348
a230b26e
EK		 4349int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4350 const SSL_CTX *ctx, int op,
4351 int bits, int nid, void *other,
4352 void *ex) {
0f113f3e
MC		 4353 return s->cert->sec_cb;
4354}
b362ccab
DSH		 4355
4356void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4357{
4358 s->cert->sec_ex = ex;
4359}
b362ccab
DSH		 4360
4361void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4362{
4363 return s->cert->sec_ex;
4364}
b362ccab
DSH		 4365
4366void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4367{
4368 ctx->cert->sec_level = level;
4369}
b362ccab
DSH		 4370
4371int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4372{
4373 return ctx->cert->sec_level;
4374}
b362ccab 4375
0f113f3e 4376void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4377 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4378 int op, int bits, int nid,
4379 void *other, void *ex))
0f113f3e
MC		 4380{
4381 ctx->cert->sec_cb = cb;
4382}
b362ccab 4383
e4646a89
KR		 4384int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4385 const SSL_CTX *ctx,
0f113f3e
MC		 4386 int op, int bits,
4387 int nid,
4388 void *other,
4389 void *ex) {
4390 return ctx->cert->sec_cb;
4391}
b362ccab
DSH		 4392
4393void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4394{
4395 ctx->cert->sec_ex = ex;
4396}
b362ccab
DSH		 4397
4398void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4399{
4400 return ctx->cert->sec_ex;
4401}
b362ccab 4402
8106cb8b
VD		 4403/*
4404 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4405 * can return unsigned long, instead of the generic long return value from the
4406 * control interface.
4407 */
4408unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4409{
4410 return ctx->options;
4411}
a230b26e
EK		 4412
4413unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4414{
4415 return s->options;
4416}
a230b26e 4417
8106cb8b
VD		 4418unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4419{
4420 return ctx->options |= op;
4421}
a230b26e 4422
8106cb8b
VD		 4423unsigned long SSL_set_options(SSL *s, unsigned long op)
4424{
4425 return s->options |= op;
4426}
a230b26e 4427
8106cb8b
VD		 4428unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4429{
4430 return ctx->options &= ~op;
4431}
a230b26e 4432
8106cb8b
VD		 4433unsigned long SSL_clear_options(SSL *s, unsigned long op)
4434{
4435 return s->options &= ~op;
4436}
4437
696178ed
DSH		 4438STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4439{
4440 return s->verified_chain;
4441}
4442
0f113f3e 4443IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4444
4445#ifndef OPENSSL_NO_CT
4446
4447/*
4448 * Moves SCTs from the |src| stack to the |dst| stack.
4449 * The source of each SCT will be set to |origin|.
4450 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4451 * the caller.
4452 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4453 */
a230b26e
EK		 4454static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4455 sct_source_t origin)
ed29e82a
RP		 4456{
4457 int scts_moved = 0;
4458 SCT *sct = NULL;
4459
4460 if (*dst == NULL) {
4461 *dst = sk_SCT_new_null();
4462 if (*dst == NULL) {
4463 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4464 goto err;
4465 }
4466 }
4467
4468 while ((sct = sk_SCT_pop(src)) != NULL) {
4469 if (SCT_set_source(sct, origin) != 1)
4470 goto err;
4471
4472 if (sk_SCT_push(*dst, sct) <= 0)
4473 goto err;
4474 scts_moved += 1;
4475 }
4476
4477 return scts_moved;
a230b26e 4478 err:
ed29e82a 4479 if (sct != NULL)
a230b26e 4480 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4481 return -1;
ed29e82a
RP		 4482}
4483
4484/*
a230b26e 4485 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4486 * Returns the number of SCTs extracted.
a230b26e 4487 */
ed29e82a
RP		 4488static int ct_extract_tls_extension_scts(SSL *s)
4489{
4490 int scts_extracted = 0;
4491
aff8c126
RS		 4492 if (s->ext.scts != NULL) {
4493 const unsigned char *p = s->ext.scts;
4494 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4495
4496 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4497
4498 SCT_LIST_free(scts);
4499 }
4500
4501 return scts_extracted;
4502}
4503
4504/*
4505 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4506 * contains an SCT X509 extension. They will be stored in |s->scts|.
4507 * Returns:
4508 * - The number of SCTs extracted, assuming an OCSP response exists.
4509 * - 0 if no OCSP response exists or it contains no SCTs.
4510 * - A negative integer if an error occurs.
4511 */
4512static int ct_extract_ocsp_response_scts(SSL *s)
4513{
a230b26e 4514# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4515 int scts_extracted = 0;
4516 const unsigned char *p;
4517 OCSP_BASICRESP *br = NULL;
4518 OCSP_RESPONSE *rsp = NULL;
4519 STACK_OF(SCT) *scts = NULL;
4520 int i;
4521
aff8c126 4522 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4523 goto err;
4524
aff8c126
RS		 4525 p = s->ext.ocsp.resp;
4526 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4527 if (rsp == NULL)
4528 goto err;
4529
4530 br = OCSP_response_get1_basic(rsp);
4531 if (br == NULL)
4532 goto err;
4533
4534 for (i = 0; i < OCSP_resp_count(br); ++i) {
4535 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4536
4537 if (single == NULL)
4538 continue;
4539
a230b26e
EK		 4540 scts =
4541 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4542 scts_extracted =
4543 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4544 if (scts_extracted < 0)
4545 goto err;
4546 }
a230b26e 4547 err:
ed29e82a
RP		 4548 SCT_LIST_free(scts);
4549 OCSP_BASICRESP_free(br);
4550 OCSP_RESPONSE_free(rsp);
4551 return scts_extracted;
a230b26e 4552# else
3e41ac35
MC		 4553 /* Behave as if no OCSP response exists */
4554 return 0;
a230b26e 4555# endif
ed29e82a
RP		 4556}
4557
4558/*
4559 * Attempts to extract SCTs from the peer certificate.
4560 * Return the number of SCTs extracted, or a negative integer if an error
4561 * occurs.
4562 */
4563static int ct_extract_x509v3_extension_scts(SSL *s)
4564{
4565 int scts_extracted = 0;
3f3c7d26 4566 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4567
4568 if (cert != NULL) {
4569 STACK_OF(SCT) *scts =
4570 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4571
4572 scts_extracted =
4573 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4574
4575 SCT_LIST_free(scts);
4576 }
4577
4578 return scts_extracted;
4579}
4580
4581/*
4582 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4583 * response (if it exists) and X509v3 extensions in the certificate.
4584 * Returns NULL if an error occurs.
4585 */
4586const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4587{
4588 if (!s->scts_parsed) {
4589 if (ct_extract_tls_extension_scts(s) < 0 ||
4590 ct_extract_ocsp_response_scts(s) < 0 ||
4591 ct_extract_x509v3_extension_scts(s) < 0)
4592 goto err;
4593
4594 s->scts_parsed = 1;
4595 }
4596 return s->scts;
a230b26e 4597 err:
ed29e82a
RP		 4598 return NULL;
4599}
4600
a230b26e 4601static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4602 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4603{
43341433
VD		 4604 return 1;
4605}
4606
a230b26e 4607static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4608 const STACK_OF(SCT) *scts, void *unused_arg)
4609{
4610 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4611 int i;
ed29e82a 4612
43341433
VD		 4613 for (i = 0; i < count; ++i) {
4614 SCT *sct = sk_SCT_value(scts, i);
4615 int status = SCT_get_validation_status(sct);
4616
4617 if (status == SCT_VALIDATION_STATUS_VALID)
4618 return 1;
4619 }
4620 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4621 return 0;
4622}
4623
4624int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4625 void *arg)
4626{
ed29e82a
RP		 4627 /*
4628 * Since code exists that uses the custom extension handler for CT, look
4629 * for this and throw an error if they have already registered to use CT.
4630 */
4631 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4632 TLSEXT_TYPE_signed_certificate_timestamp))
4633 {
ed29e82a
RP		 4634 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4635 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4636 return 0;
ed29e82a
RP		 4637 }
4638
ed29e82a 4639 if (callback != NULL) {
a230b26e
EK		 4640 /*
4641 * If we are validating CT, then we MUST accept SCTs served via OCSP
4642 */
ed29e82a 4643 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4644 return 0;
ed29e82a
RP		 4645 }
4646
43341433
VD		 4647 s->ct_validation_callback = callback;
4648 s->ct_validation_callback_arg = arg;
4649
4650 return 1;
ed29e82a
RP		 4651}
4652
43341433 4653int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 4654 ssl_ct_validation_cb callback, void *arg)
ed29e82a 4655{
ed29e82a
RP		 4656 /*
4657 * Since code exists that uses the custom extension handler for CT, look for
4658 * this and throw an error if they have already registered to use CT.
4659 */
4660 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 4661 TLSEXT_TYPE_signed_certificate_timestamp))
4662 {
ed29e82a
RP		 4663 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4664 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4665 return 0;
ed29e82a
RP		 4666 }
4667
4668 ctx->ct_validation_callback = callback;
4669 ctx->ct_validation_callback_arg = arg;
43341433 4670 return 1;
ed29e82a
RP		 4671}
4672
43341433 4673int SSL_ct_is_enabled(const SSL *s)
ed29e82a 4674{
43341433 4675 return s->ct_validation_callback != NULL;
ed29e82a
RP		 4676}
4677
43341433 4678int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 4679{
43341433 4680 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 4681}
4682
4d482ee2 4683int ssl_validate_ct(SSL *s)
ed29e82a
RP		 4684{
4685 int ret = 0;
3f3c7d26 4686 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 4687 X509 *issuer;
b9aec69a 4688 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 4689 CT_POLICY_EVAL_CTX *ctx = NULL;
4690 const STACK_OF(SCT) *scts;
4691
43341433
VD		 4692 /*
4693 * If no callback is set, the peer is anonymous, or its chain is invalid,
4694 * skip SCT validation - just return success. Applications that continue
4695 * handshakes without certificates, with unverified chains, or pinned leaf
4696 * certificates are outside the scope of the WebPKI and CT.
4697 *
4698 * The above exclusions notwithstanding the vast majority of peers will
4699 * have rather ordinary certificate chains validated by typical
4700 * applications that perform certificate verification and therefore will
4701 * process SCTs when enabled.
4702 */
4703 if (s->ct_validation_callback == NULL || cert == NULL ||
4704 s->verify_result != X509_V_OK ||
a230b26e 4705 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 4706 return 1;
4707
43341433
VD		 4708 /*
4709 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4710 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4711 */
4712 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4713 switch (dane->mtlsa->usage) {
4714 case DANETLS_USAGE_DANE_TA:
4715 case DANETLS_USAGE_DANE_EE:
4716 return 1;
4717 }
ed29e82a
RP		 4718 }
4719
ed29e82a
RP		 4720 ctx = CT_POLICY_EVAL_CTX_new();
4721 if (ctx == NULL) {
f63a17d6
MC		 4722 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
4723 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 4724 goto end;
4725 }
4726
43341433 4727 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 4728 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4729 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4730 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 4731 CT_POLICY_EVAL_CTX_set_time(
4732 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 4733
4734 scts = SSL_get0_peer_scts(s);
4735
43341433
VD		 4736 /*
4737 * This function returns success (> 0) only when all the SCTs are valid, 0
4738 * when some are invalid, and < 0 on various internal errors (out of
4739 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4740 * reason to abort the handshake, that decision is up to the callback.
4741 * Therefore, we error out only in the unexpected case that the return
4742 * value is negative.
4743 *
4744 * XXX: One might well argue that the return value of this function is an
f430ba31 4745 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 4746 * status of each of the provided SCTs. So long as it correctly separates
4747 * the wheat from the chaff it should return success. Failure in this case
4748 * ought to correspond to an inability to carry out its duties.
4749 */
4750 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 4751 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4752 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 4753 goto end;
4754 }
4755
4756 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4757 if (ret < 0)
a230b26e 4758 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 4759 if (!ret)
4760 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4761 SSL_R_CALLBACK_FAILED);
ed29e82a 4762
a230b26e 4763 end:
ed29e82a 4764 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 4765 /*
4766 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4767 * failure return code here. Also the application may wish the complete
4768 * the handshake, and then disconnect cleanly at a higher layer, after
4769 * checking the verification status of the completed connection.
4770 *
4771 * We therefore force a certificate verification failure which will be
4772 * visible via SSL_get_verify_result() and cached as part of any resumed
4773 * session.
4774 *
4775 * Note: the permissive callback is for information gathering only, always
4776 * returns success, and does not affect verification status. Only the
4777 * strict callback or a custom application-specified callback can trigger
4778 * connection failure or record a verification error.
4779 */
4780 if (ret <= 0)
4781 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 4782 return ret;
4783}
4784
43341433
VD		 4785int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4786{
4787 switch (validation_mode) {
4788 default:
4789 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4790 return 0;
4791 case SSL_CT_VALIDATION_PERMISSIVE:
4792 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4793 case SSL_CT_VALIDATION_STRICT:
4794 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4795 }
4796}
4797
4798int SSL_enable_ct(SSL *s, int validation_mode)
4799{
4800 switch (validation_mode) {
4801 default:
4802 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4803 return 0;
4804 case SSL_CT_VALIDATION_PERMISSIVE:
4805 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4806 case SSL_CT_VALIDATION_STRICT:
4807 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4808 }
4809}
4810
ed29e82a
RP		 4811int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4812{
328f36c5 4813 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 4814}
4815
4816int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4817{
4818 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4819}
4820
a230b26e 4821void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 4822{
4823 CTLOG_STORE_free(ctx->ctlog_store);
4824 ctx->ctlog_store = logs;
4825}
4826
4827const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4828{
4829 return ctx->ctlog_store;
4830}
4831
6b1bb98f
BK		 4832#endif /* OPENSSL_NO_CT */
4833
a9c0d8be
DB		 4834void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4835 void *arg)
6b1bb98f 4836{
a9c0d8be
DB		 4837 c->client_hello_cb = cb;
4838 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 4839}
4840
a9c0d8be 4841int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 4842{
4843 if (s->clienthello == NULL)
4844 return 0;
4845 return s->clienthello->isv2;
4846}
4847
a9c0d8be 4848unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 4849{
4850 if (s->clienthello == NULL)
4851 return 0;
4852 return s->clienthello->legacy_version;
4853}
4854
a9c0d8be 4855size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4856{
4857 if (s->clienthello == NULL)
4858 return 0;
4859 if (out != NULL)
4860 *out = s->clienthello->random;
4861 return SSL3_RANDOM_SIZE;
4862}
4863
a9c0d8be 4864size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4865{
4866 if (s->clienthello == NULL)
4867 return 0;
4868 if (out != NULL)
4869 *out = s->clienthello->session_id;
4870 return s->clienthello->session_id_len;
4871}
4872
a9c0d8be 4873size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4874{
4875 if (s->clienthello == NULL)
4876 return 0;
4877 if (out != NULL)
4878 *out = PACKET_data(&s->clienthello->ciphersuites);
4879 return PACKET_remaining(&s->clienthello->ciphersuites);
4880}
4881
a9c0d8be 4882size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4883{
4884 if (s->clienthello == NULL)
4885 return 0;
4886 if (out != NULL)
4887 *out = s->clienthello->compressions;
4888 return s->clienthello->compressions_len;
4889}
4890
a9c0d8be 4891int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 4892{
4893 RAW_EXTENSION *ext;
4894 int *present;
4895 size_t num = 0, i;
4896
4897 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4898 return 0;
4899 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4900 ext = s->clienthello->pre_proc_exts + i;
4901 if (ext->present)
4902 num++;
4903 }
4904 present = OPENSSL_malloc(sizeof(*present) * num);
4905 if (present == NULL)
4906 return 0;
4907 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4908 ext = s->clienthello->pre_proc_exts + i;
4909 if (ext->present) {
4910 if (ext->received_order >= num)
4911 goto err;
4912 present[ext->received_order] = ext->type;
4913 }
4914 }
4915 *out = present;
4916 *outlen = num;
4917 return 1;
4918 err:
4919 OPENSSL_free(present);
4920 return 0;
4921}
4922
a9c0d8be 4923int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 4924 size_t *outlen)
4925{
4926 size_t i;
4927 RAW_EXTENSION *r;
4928
4929 if (s->clienthello == NULL)
4930 return 0;
4931 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4932 r = s->clienthello->pre_proc_exts + i;
4933 if (r->present && r->type == type) {
4934 if (out != NULL)
4935 *out = PACKET_data(&r->data);
4936 if (outlen != NULL)
4937 *outlen = PACKET_remaining(&r->data);
4938 return 1;
4939 }
4940 }
4941 return 0;
4942}
2faa1b48 4943
a58eb06d
TS		 4944int SSL_free_buffers(SSL *ssl)
4945{
4946 RECORD_LAYER *rl = &ssl->rlayer;
4947
4948 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4949 return 0;
4950
4951 RECORD_LAYER_release(rl);
4952 return 1;
4953}
4954
4955int SSL_alloc_buffers(SSL *ssl)
4956{
4957 return ssl3_setup_buffers(ssl);
4958}
4959
2faa1b48
CB		 4960void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4961{
4962 ctx->keylog_callback = cb;
4963}
4964
4965SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4966{
4967 return ctx->keylog_callback;
4968}
4969
4970static int nss_keylog_int(const char *prefix,
4971 SSL *ssl,
4972 const uint8_t *parameter_1,
4973 size_t parameter_1_len,
4974 const uint8_t *parameter_2,
4975 size_t parameter_2_len)
4976{
4977 char *out = NULL;
4978 char *cursor = NULL;
4979 size_t out_len = 0;
4980 size_t i;
4981 size_t prefix_len;
4982
4983 if (ssl->ctx->keylog_callback == NULL) return 1;
4984
4985 /*
4986 * Our output buffer will contain the following strings, rendered with
4987 * space characters in between, terminated by a NULL character: first the
4988 * prefix, then the first parameter, then the second parameter. The
4989 * meaning of each parameter depends on the specific key material being
4990 * logged. Note that the first and second parameters are encoded in
4991 * hexadecimal, so we need a buffer that is twice their lengths.
4992 */
4993 prefix_len = strlen(prefix);
4994 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4995 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 4996 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
4997 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 4998 return 0;
4999 }
5000
5001 strcpy(cursor, prefix);
5002 cursor += prefix_len;
5003 *cursor++ = ' ';
5004
5005 for (i = 0; i < parameter_1_len; i++) {
5006 sprintf(cursor, "%02x", parameter_1[i]);
5007 cursor += 2;
5008 }
5009 *cursor++ = ' ';
5010
5011 for (i = 0; i < parameter_2_len; i++) {
5012 sprintf(cursor, "%02x", parameter_2[i]);
5013 cursor += 2;
5014 }
5015 *cursor = '\0';
5016
5017 ssl->ctx->keylog_callback(ssl, (const char *)out);
5018 OPENSSL_free(out);
5019 return 1;
5020
5021}
5022
5023int ssl_log_rsa_client_key_exchange(SSL *ssl,
5024 const uint8_t *encrypted_premaster,
5025 size_t encrypted_premaster_len,
5026 const uint8_t *premaster,
5027 size_t premaster_len)
5028{
5029 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 5030 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5031 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5032 return 0;
5033 }
5034
f0deb4d3 5035 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5036 return nss_keylog_int("RSA",
5037 ssl,
5038 encrypted_premaster,
f0deb4d3 5039 8,
2faa1b48
CB		 5040 premaster,
5041 premaster_len);
5042}
5043
2c7bd692
CB		 5044int ssl_log_secret(SSL *ssl,
5045 const char *label,
5046 const uint8_t *secret,
5047 size_t secret_len)
2faa1b48 5048{
2c7bd692 5049 return nss_keylog_int(label,
2faa1b48 5050 ssl,
2c7bd692
CB		 5051 ssl->s3->client_random,
5052 SSL3_RANDOM_SIZE,
5053 secret,
5054 secret_len);
2faa1b48
CB		 5055}
5056
ccb8e6e0
BK		 5057#define SSLV2_CIPHER_LEN 3
5058
f63a17d6 5059int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5060{
ccb8e6e0 5061 int n;
ccb8e6e0
BK		 5062
5063 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5064
5065 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5066 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5067 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5068 return 0;
ccb8e6e0
BK		 5069 }
5070
5071 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5072 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 5073 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5074 return 0;
ccb8e6e0
BK		 5075 }
5076
5077 OPENSSL_free(s->s3->tmp.ciphers_raw);
5078 s->s3->tmp.ciphers_raw = NULL;
5079 s->s3->tmp.ciphers_rawlen = 0;
5080
5081 if (sslv2format) {
5082 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5083 PACKET sslv2ciphers = *cipher_suites;
5084 unsigned int leadbyte;
5085 unsigned char *raw;
5086
5087 /*
5088 * We store the raw ciphers list in SSLv3+ format so we need to do some
5089 * preprocessing to convert the list first. If there are any SSLv2 only
5090 * ciphersuites with a non-zero leading byte then we are going to
5091 * slightly over allocate because we won't store those. But that isn't a
5092 * problem.
5093 */
5094 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5095 s->s3->tmp.ciphers_raw = raw;
5096 if (raw == NULL) {
f63a17d6
MC		 5097 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5098 ERR_R_MALLOC_FAILURE);
5099 return 0;
ccb8e6e0
BK		 5100 }
5101 for (s->s3->tmp.ciphers_rawlen = 0;
5102 PACKET_remaining(&sslv2ciphers) > 0;
5103 raw += TLS_CIPHER_LEN) {
5104 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5105 || (leadbyte == 0
5106 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5107 TLS_CIPHER_LEN))
5108 || (leadbyte != 0
5109 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5110 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5111 SSL_R_BAD_PACKET);
ccb8e6e0
BK		 5112 OPENSSL_free(s->s3->tmp.ciphers_raw);
5113 s->s3->tmp.ciphers_raw = NULL;
5114 s->s3->tmp.ciphers_rawlen = 0;
f63a17d6 5115 return 0;
ccb8e6e0
BK		 5116 }
5117 if (leadbyte == 0)
5118 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5119 }
5120 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5121 &s->s3->tmp.ciphers_rawlen)) {
f63a17d6
MC		 5122 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5123 ERR_R_INTERNAL_ERROR);
5124 return 0;
ccb8e6e0 5125 }
90134d98 5126 return 1;
90134d98
BK		 5127}
5128
5129int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5130 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5131 STACK_OF(SSL_CIPHER) **scsvs)
5132{
90134d98
BK		 5133 PACKET pkt;
5134
5135 if (!PACKET_buf_init(&pkt, bytes, len))
5136 return 0;
f63a17d6 5137 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5138}
5139
5140int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5141 STACK_OF(SSL_CIPHER) **skp,
5142 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5143 int sslv2format, int fatal)
90134d98
BK		 5144{
5145 const SSL_CIPHER *c;
5146 STACK_OF(SSL_CIPHER) *sk = NULL;
5147 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5148 int n;
5149 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5150 unsigned char cipher[SSLV2_CIPHER_LEN];
5151
5152 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5153
5154 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5155 if (fatal)
5156 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5157 SSL_R_NO_CIPHERS_SPECIFIED);
5158 else
5159 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5160 return 0;
5161 }
5162
5163 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5164 if (fatal)
5165 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5166 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5167 else
5168 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5169 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5170 return 0;
5171 }
5172
5173 sk = sk_SSL_CIPHER_new_null();
5174 scsvs = sk_SSL_CIPHER_new_null();
5175 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5176 if (fatal)
5177 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5178 ERR_R_MALLOC_FAILURE);
5179 else
5180 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5181 goto err;
5182 }
ccb8e6e0
BK		 5183
5184 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5185 /*
5186 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5187 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5188 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5189 */
5190 if (sslv2format && cipher[0] != '\0')
5191 continue;
5192
ccb8e6e0
BK		 5193 /* For SSLv2-compat, ignore leading 0-byte. */
5194 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5195 if (c != NULL) {
90134d98
BK		 5196 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5197 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5198 if (fatal)
5199 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5200 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5201 else
5202 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5203 goto err;
5204 }
5205 }
5206 }
5207 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5208 if (fatal)
5209 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5210 SSL_R_BAD_LENGTH);
5211 else
5212 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5213 goto err;
5214 }
5215
90134d98
BK		 5216 if (skp != NULL)
5217 *skp = sk;
5218 else
5219 sk_SSL_CIPHER_free(sk);
5220 if (scsvs_out != NULL)
5221 *scsvs_out = scsvs;
5222 else
5223 sk_SSL_CIPHER_free(scsvs);
5224 return 1;
ccb8e6e0
BK		 5225 err:
5226 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5227 sk_SSL_CIPHER_free(scsvs);
5228 return 0;
ccb8e6e0 5229}
3fc8d856
MC		 5230
5231int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5232{
5233 ctx->max_early_data = max_early_data;
5234
5235 return 1;
5236}
5237
46dcb945 5238uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5239{
5240 return ctx->max_early_data;
5241}
5242
5243int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5244{
5245 s->max_early_data = max_early_data;
5246
5247 return 1;
5248}
5249
a8e75d56 5250uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5251{
5252 return s->max_early_data;
5253}
ae3947de
RS		 5254
5255int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5256{
2139145b
BK		 5257 if (s->drbg != NULL) {
5258 /*
5259 * Currently, it's the duty of the caller to serialize the generate
5260 * requests to the DRBG. So formally we have to check whether
5261 * s->drbg->lock != NULL and take the lock if this is the case.
5262 * However, this DRBG is unique to a given SSL object, and we already
5263 * require that SSL objects are only accessed by a single thread at
5264 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5265 * no risk that this DRBG is accessed by a child DRBG in parallel
5266 * for reseeding. As such, we can rely on the application's
5267 * serialization of SSL accesses for the needed concurrency protection
5268 * here.
5269 */
5270 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5271 }
ae3947de
RS		 5272 return RAND_bytes(rnd, (int)size);
5273}
cf72c757
F		 5274
5275__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5276{
5277 /* Return any active Max Fragment Len extension */
5278 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5279 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5280
5281 /* return current SSL connection setting */
5282 return ssl->max_send_fragment;
5283}
5284
5285__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5286{
5287 /* Return a value regarding an active Max Fragment Len extension */
5288 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5289 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5290 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5291
5292 /* else limit |split_send_fragment| to current |max_send_fragment| */
5293 if (ssl->split_send_fragment > ssl->max_send_fragment)
5294 return ssl->max_send_fragment;
5295
5296 /* return current SSL connection setting */
5297 return ssl->split_send_fragment;
5298}
042c5753
MC		 5299
5300int SSL_stateless(SSL *s)
5301{
5302 int ret;
5303
5304 /* Ensure there is no state left over from a previous invocation */
5305 if (!SSL_clear(s))
d6bb50a5 5306 return 0;
042c5753
MC		 5307
5308 ERR_clear_error();
5309
5310 s->s3->flags |= TLS1_FLAGS_STATELESS;
5311 ret = SSL_accept(s);
5312 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5313
d6bb50a5 5314 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5315 return 1;
5316
d6bb50a5 5317 return 0;
042c5753 5318}
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