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Fix clienthellotest for new TLSv1.3 ciphersuite configuration
[thirdparty/openssl.git] / ssl / ssl_lib.c
CommitLineData
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
88834998
TS		 617 EVP_MD_CTX_free(s->pha_dgst);
618 s->pha_dgst = NULL;
619
919ba009
VD		 620 /* Reset DANE verification result state */
621 s->dane.mdpth = -1;
622 s->dane.pdpth = -1;
623 X509_free(s->dane.mcert);
624 s->dane.mcert = NULL;
625 s->dane.mtlsa = NULL;
626
627 /* Clear the verification result peername */
628 X509_VERIFY_PARAM_move_peername(s->param, NULL);
629
0f113f3e
MC		 630 /*
631 * Check to see if we were changed into a different method, if so, revert
24252537 632 * back.
0f113f3e 633 */
24252537 634 if (s->method != s->ctx->method) {
0f113f3e
MC		 635 s->method->ssl_free(s);
636 s->method = s->ctx->method;
637 if (!s->method->ssl_new(s))
a89325e4 638 return 0;
b77f3ed1
MC		 639 } else {
640 if (!s->method->ssl_clear(s))
641 return 0;
642 }
33d23b87 643
af9752e5 644 RECORD_LAYER_clear(&s->rlayer);
33d23b87 645
a89325e4 646 return 1;
0f113f3e 647}
d02b48c6 648
4f43d0e7 649/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 650int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
651{
652 STACK_OF(SSL_CIPHER) *sk;
653
654 ctx->method = meth;
655
f865b081
MC		 656 sk = ssl_create_cipher_list(ctx->method,
657 ctx->tls13_ciphersuites,
658 &(ctx->cipher_list),
0f113f3e
MC		 659 &(ctx->cipher_list_by_id),
660 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
661 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 662 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 663 return 0;
0f113f3e 664 }
208fb891 665 return 1;
0f113f3e 666}
d02b48c6 667
4f43d0e7 668SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 669{
670 SSL *s;
671
672 if (ctx == NULL) {
673 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 674 return NULL;
0f113f3e
MC		 675 }
676 if (ctx->method == NULL) {
677 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 678 return NULL;
0f113f3e
MC		 679 }
680
b51bce94 681 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 682 if (s == NULL)
683 goto err;
0f113f3e 684
e6b10c34 685 s->references = 1;
16203f7b 686 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 687 if (s->lock == NULL) {
688 OPENSSL_free(s);
689 s = NULL;
ae3947de 690 goto err;
e6b10c34 691 }
ae3947de
RS		 692
693 /*
694 * If not using the standard RAND (say for fuzzing), then don't use a
695 * chained DRBG.
696 */
697 if (RAND_get_rand_method() == RAND_OpenSSL()) {
c16de9d8 698 s->drbg =
8164d91d 699 RAND_DRBG_new(RAND_DRBG_NID, 0, RAND_DRBG_get0_public());
0b14a5b7 700 if (s->drbg == NULL
c16de9d8
DMSP		 701 || RAND_DRBG_instantiate(s->drbg,
702 (const unsigned char *) SSL_version_str,
e6b10c34 703 sizeof(SSL_version_str) - 1) == 0)
ae3947de 704 goto err;
16203f7b
AG		 705 }
706
c036e210 707 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 708
0f113f3e 709 s->options = ctx->options;
5ae4ceb9 710 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 711 s->min_proto_version = ctx->min_proto_version;
712 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 713 s->mode = ctx->mode;
714 s->max_cert_list = ctx->max_cert_list;
3fc8d856 715 s->max_early_data = ctx->max_early_data;
0f113f3e 716
f865b081
MC		 717 /* Shallow copy of the ciphersuites stack */
718 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
719 if (s->tls13_ciphersuites == NULL)
720 goto err;
721
2c382349
KR		 722 /*
723 * Earlier library versions used to copy the pointer to the CERT, not
724 * its contents; only when setting new parameters for the per-SSL
725 * copy, ssl_cert_new would be called (and the direct reference to
726 * the per-SSL_CTX settings would be lost, but those still were
727 * indirectly accessed for various purposes, and for that reason they
728 * used to be known as s->ctx->default_cert). Now we don't look at the
729 * SSL_CTX's CERT after having duplicated it once.
730 */
731 s->cert = ssl_cert_dup(ctx->cert);
732 if (s->cert == NULL)
733 goto err;
0f113f3e 734
52e1d7b1 735 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 736 s->msg_callback = ctx->msg_callback;
737 s->msg_callback_arg = ctx->msg_callback_arg;
738 s->verify_mode = ctx->verify_mode;
739 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 740 s->record_padding_cb = ctx->record_padding_cb;
741 s->record_padding_arg = ctx->record_padding_arg;
742 s->block_padding = ctx->block_padding;
0f113f3e 743 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 744 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 745 goto err;
0f113f3e
MC		 746 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
747 s->verify_callback = ctx->default_verify_callback;
748 s->generate_session_id = ctx->generate_session_id;
749
750 s->param = X509_VERIFY_PARAM_new();
a71edf3b 751 if (s->param == NULL)
0f113f3e
MC		 752 goto err;
753 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 754 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 755
756 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 757 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 758 s->split_send_fragment = ctx->split_send_fragment;
759 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 760 if (s->max_pipelines > 1)
761 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 762 if (ctx->default_read_buf_len > 0)
763 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 764
16203f7b 765 SSL_CTX_up_ref(ctx);
0f113f3e 766 s->ctx = ctx;
aff8c126
RS		 767 s->ext.debug_cb = 0;
768 s->ext.debug_arg = NULL;
769 s->ext.ticket_expected = 0;
770 s->ext.status_type = ctx->ext.status_type;
771 s->ext.status_expected = 0;
772 s->ext.ocsp.ids = NULL;
773 s->ext.ocsp.exts = NULL;
774 s->ext.ocsp.resp = NULL;
775 s->ext.ocsp.resp_len = 0;
16203f7b 776 SSL_CTX_up_ref(ctx);
222da979 777 s->session_ctx = ctx;
a230b26e 778#ifndef OPENSSL_NO_EC
aff8c126
RS		 779 if (ctx->ext.ecpointformats) {
780 s->ext.ecpointformats =
781 OPENSSL_memdup(ctx->ext.ecpointformats,
782 ctx->ext.ecpointformats_len);
783 if (!s->ext.ecpointformats)
0f113f3e 784 goto err;
aff8c126
RS		 785 s->ext.ecpointformats_len =
786 ctx->ext.ecpointformats_len;
787 }
788 if (ctx->ext.supportedgroups) {
789 s->ext.supportedgroups =
790 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 791 ctx->ext.supportedgroups_len
b92d7b62 792 * sizeof(*ctx->ext.supportedgroups));
aff8c126 793 if (!s->ext.supportedgroups)
0f113f3e 794 goto err;
aff8c126 795 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 796 }
a230b26e
EK		 797#endif
798#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 799 s->ext.npn = NULL;
a230b26e 800#endif
6f017a8f 801
aff8c126
RS		 802 if (s->ctx->ext.alpn) {
803 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
804 if (s->ext.alpn == NULL)
0f113f3e 805 goto err;
aff8c126
RS		 806 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
807 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 808 }
d02b48c6 809
696178ed 810 s->verified_chain = NULL;
0f113f3e 811 s->verify_result = X509_V_OK;
d02b48c6 812
a974e64a
MC		 813 s->default_passwd_callback = ctx->default_passwd_callback;
814 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
815
0f113f3e 816 s->method = ctx->method;
d02b48c6 817
44c04a2e
MC		 818 s->key_update = SSL_KEY_UPDATE_NONE;
819
0f113f3e
MC		 820 if (!s->method->ssl_new(s))
821 goto err;
d02b48c6 822
0f113f3e 823 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 824
61986d32 825 if (!SSL_clear(s))
69f68237 826 goto err;
58964a49 827
25a807bc
F		 828 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
829 goto err;
58964a49 830
ddac1974 831#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 832 s->psk_client_callback = ctx->psk_client_callback;
833 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 834#endif
f46184bd
MC		 835 s->psk_find_session_cb = ctx->psk_find_session_cb;
836 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 837
07bbc92c
MC		 838 s->job = NULL;
839
ed29e82a
RP		 840#ifndef OPENSSL_NO_CT
841 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 842 ctx->ct_validation_callback_arg))
ed29e82a
RP		 843 goto err;
844#endif
845
16203f7b 846 return s;
0f113f3e 847 err:
62adbcee 848 SSL_free(s);
0f113f3e 849 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 850 return NULL;
0f113f3e 851}
d02b48c6 852
e417070c
RS		 853int SSL_is_dtls(const SSL *s)
854{
855 return SSL_IS_DTLS(s) ? 1 : 0;
856}
857
c5ebfcab 858int SSL_up_ref(SSL *s)
a18a31e4 859{
16203f7b 860 int i;
c5ebfcab 861
2f545ae4 862 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 863 return 0;
864
865 REF_PRINT_COUNT("SSL", s);
866 REF_ASSERT_ISNT(i < 2);
867 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 868}
869
0f113f3e
MC		 870int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
871 unsigned int sid_ctx_len)
872{
cbe29648 873 if (sid_ctx_len > sizeof(ctx->sid_ctx)) {
0f113f3e
MC		 874 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
875 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
876 return 0;
877 }
878 ctx->sid_ctx_length = sid_ctx_len;
879 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 880
881 return 1;
0f113f3e 882}
4eb77b26 883
0f113f3e
MC		 884int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
885 unsigned int sid_ctx_len)
886{
887 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
888 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
889 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
890 return 0;
891 }
892 ssl->sid_ctx_length = sid_ctx_len;
893 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 894
895 return 1;
0f113f3e 896}
b4cadc6e 897
dc644fe2 898int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 899{
16203f7b 900 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 901 ctx->generate_session_id = cb;
16203f7b 902 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 903 return 1;
904}
dc644fe2
GT		 905
906int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 907{
16203f7b 908 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 909 ssl->generate_session_id = cb;
16203f7b 910 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 911 return 1;
912}
dc644fe2 913
f85c9904 914int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 915 unsigned int id_len)
916{
917 /*
918 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 919 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 920 * find if there's a session in the hash table that would conflict with
921 * any new session built out of this id/id_len and the ssl_version in use
922 * by this SSL.
923 */
924 SSL_SESSION r, *p;
925
cbe29648 926 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 927 return 0;
928
929 r.ssl_version = ssl->version;
930 r.session_id_length = id_len;
931 memcpy(r.session_id, id, id_len);
932
e2bb9b9b
TS		 933 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
934 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
935 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 936 return (p != NULL);
937}
dc644fe2 938
bb7cd4e3 939int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 940{
941 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
942}
bb7cd4e3
DSH		 943
944int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 945{
946 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
947}
926a56bf 948
bb7cd4e3 949int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 950{
951 return X509_VERIFY_PARAM_set_trust(s->param, trust);
952}
bb7cd4e3
DSH		 953
954int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 955{
956 return X509_VERIFY_PARAM_set_trust(s->param, trust);
957}
bb7cd4e3 958
919ba009
VD		 959int SSL_set1_host(SSL *s, const char *hostname)
960{
961 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
962}
963
964int SSL_add1_host(SSL *s, const char *hostname)
965{
966 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
967}
968
969void SSL_set_hostflags(SSL *s, unsigned int flags)
970{
971 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
972}
973
4588cb44 974const char *SSL_get0_peername(SSL *s)
919ba009
VD		 975{
976 return X509_VERIFY_PARAM_get0_peername(s->param);
977}
978
979int SSL_CTX_dane_enable(SSL_CTX *ctx)
980{
981 return dane_ctx_enable(&ctx->dane);
982}
983
5ae4ceb9
VD		 984unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
985{
986 unsigned long orig = ctx->dane.flags;
987
988 ctx->dane.flags |= flags;
989 return orig;
990}
991
992unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
993{
994 unsigned long orig = ctx->dane.flags;
995
996 ctx->dane.flags &= ~flags;
997 return orig;
998}
999
919ba009
VD		 1000int SSL_dane_enable(SSL *s, const char *basedomain)
1001{
b9aec69a 1002 SSL_DANE *dane = &s->dane;
919ba009
VD		 1003
1004 if (s->ctx->dane.mdmax == 0) {
1005 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1006 return 0;
1007 }
1008 if (dane->trecs != NULL) {
1009 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1010 return 0;
1011 }
1012
8d887efa
VD		 1013 /*
1014 * Default SNI name. This rejects empty names, while set1_host below
1015 * accepts them and disables host name checks. To avoid side-effects with
1016 * invalid input, set the SNI name first.
1017 */
aff8c126 1018 if (s->ext.hostname == NULL) {
dccd20d1 1019 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 1020 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1021 return -1;
8d887efa
VD		 1022 }
1023 }
1024
919ba009
VD		 1025 /* Primary RFC6125 reference identifier */
1026 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1027 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1028 return -1;
1029 }
1030
919ba009
VD		 1031 dane->mdpth = -1;
1032 dane->pdpth = -1;
1033 dane->dctx = &s->ctx->dane;
1034 dane->trecs = sk_danetls_record_new_null();
1035
1036 if (dane->trecs == NULL) {
1037 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1038 return -1;
1039 }
1040 return 1;
1041}
1042
5ae4ceb9
VD		 1043unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1044{
1045 unsigned long orig = ssl->dane.flags;
1046
1047 ssl->dane.flags |= flags;
1048 return orig;
1049}
1050
1051unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1052{
1053 unsigned long orig = ssl->dane.flags;
1054
1055 ssl->dane.flags &= ~flags;
1056 return orig;
1057}
1058
919ba009
VD		 1059int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1060{
b9aec69a 1061 SSL_DANE *dane = &s->dane;
919ba009 1062
c0a445a9 1063 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1064 return -1;
1065 if (dane->mtlsa) {
1066 if (mcert)
1067 *mcert = dane->mcert;
1068 if (mspki)
1069 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1070 }
1071 return dane->mdpth;
1072}
1073
1074int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1075 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1076{
b9aec69a 1077 SSL_DANE *dane = &s->dane;
919ba009 1078
c0a445a9 1079 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1080 return -1;
1081 if (dane->mtlsa) {
1082 if (usage)
1083 *usage = dane->mtlsa->usage;
1084 if (selector)
1085 *selector = dane->mtlsa->selector;
1086 if (mtype)
1087 *mtype = dane->mtlsa->mtype;
1088 if (data)
1089 *data = dane->mtlsa->data;
1090 if (dlen)
1091 *dlen = dane->mtlsa->dlen;
1092 }
1093 return dane->mdpth;
1094}
1095
b9aec69a 1096SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1097{
1098 return &s->dane;
1099}
1100
1101int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
a41a6120 1102 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 1103{
1104 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1105}
1106
a230b26e
EK		 1107int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1108 uint8_t ord)
919ba009
VD		 1109{
1110 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1111}
1112
ccf11751 1113int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1114{
1115 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1116}
ccf11751
DSH		 1117
1118int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1119{
1120 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1121}
ccf11751 1122
7af31968 1123X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1124{
1125 return ctx->param;
1126}
7af31968
DSH		 1127
1128X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1129{
1130 return ssl->param;
1131}
7af31968 1132
a5ee80b9 1133void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1134{
1135 ssl_cert_clear_certs(s->cert);
1136}
a5ee80b9 1137
4f43d0e7 1138void SSL_free(SSL *s)
0f113f3e
MC		 1139{
1140 int i;
58964a49 1141
0f113f3e
MC		 1142 if (s == NULL)
1143 return;
e03ddfae 1144
2f545ae4 1145 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1146 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1147 if (i > 0)
1148 return;
f3f1cf84 1149 REF_ASSERT_ISNT(i < 0);
d02b48c6 1150
222561fe 1151 X509_VERIFY_PARAM_free(s->param);
919ba009 1152 dane_final(&s->dane);
0f113f3e
MC		 1153 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1154
b77f3ed1 1155 /* Ignore return value */
2e7dc7cd
MC		 1156 ssl_free_wbio_buffer(s);
1157
65e2d672 1158 BIO_free_all(s->wbio);
325cfa85 1159 BIO_free_all(s->rbio);
0f113f3e 1160
25aaa98a 1161 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1162
1163 /* add extra stuff */
25aaa98a
RS		 1164 sk_SSL_CIPHER_free(s->cipher_list);
1165 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1166 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
0f113f3e
MC		 1167
1168 /* Make the next call work :-) */
1169 if (s->session != NULL) {
1170 ssl_clear_bad_session(s);
1171 SSL_SESSION_free(s->session);
1172 }
9368f865 1173 SSL_SESSION_free(s->psksession);
add8d0e9 1174 OPENSSL_free(s->psksession_id);
0f113f3e 1175
d31fb0b5 1176 clear_ciphers(s);
d02b48c6 1177
e0e920b1 1178 ssl_cert_free(s->cert);
0f113f3e 1179 /* Free up if allocated */
d02b48c6 1180
aff8c126 1181 OPENSSL_free(s->ext.hostname);
222da979 1182 SSL_CTX_free(s->session_ctx);
e481f9b9 1183#ifndef OPENSSL_NO_EC
aff8c126
RS		 1184 OPENSSL_free(s->ext.ecpointformats);
1185 OPENSSL_free(s->ext.supportedgroups);
a230b26e 1186#endif /* OPENSSL_NO_EC */
aff8c126 1187 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1188#ifndef OPENSSL_NO_OCSP
aff8c126 1189 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1190#endif
ed29e82a
RP		 1191#ifndef OPENSSL_NO_CT
1192 SCT_LIST_free(s->scts);
aff8c126 1193 OPENSSL_free(s->ext.scts);
ed29e82a 1194#endif
aff8c126
RS		 1195 OPENSSL_free(s->ext.ocsp.resp);
1196 OPENSSL_free(s->ext.alpn);
cfef5027 1197 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1198 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1199 OPENSSL_free(s->pha_context);
1200 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1201
fa7c2637 1202 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
0f113f3e 1203
696178ed
DSH		 1204 sk_X509_pop_free(s->verified_chain, X509_free);
1205
0f113f3e
MC		 1206 if (s->method != NULL)
1207 s->method->ssl_free(s);
1208
f161995e 1209 RECORD_LAYER_release(&s->rlayer);
33d23b87 1210
e0e920b1 1211 SSL_CTX_free(s->ctx);
7c3908dd 1212
ff75a257
MC		 1213 ASYNC_WAIT_CTX_free(s->waitctx);
1214
e481f9b9 1215#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1216 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1217#endif
1218
e783bae2 1219#ifndef OPENSSL_NO_SRTP
25aaa98a 1220 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1221#endif
1222
ae3947de 1223 RAND_DRBG_free(s->drbg);
16203f7b
AG		 1224 CRYPTO_THREAD_lock_free(s->lock);
1225
0f113f3e
MC		 1226 OPENSSL_free(s);
1227}
1228
65e2d672 1229void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1230{
65e2d672 1231 BIO_free_all(s->rbio);
3ffbe008
MC		 1232 s->rbio = rbio;
1233}
1234
65e2d672 1235void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1236{
1237 /*
1238 * If the output buffering BIO is still in place, remove it
1239 */
2e7dc7cd
MC		 1240 if (s->bbio != NULL)
1241 s->wbio = BIO_pop(s->wbio);
1242
65e2d672 1243 BIO_free_all(s->wbio);
0f113f3e 1244 s->wbio = wbio;
2e7dc7cd
MC		 1245
1246 /* Re-attach |bbio| to the new |wbio|. */
1247 if (s->bbio != NULL)
1248 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1249}
d02b48c6 1250
3ffbe008
MC		 1251void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1252{
65e2d672
MC		 1253 /*
1254 * For historical reasons, this function has many different cases in
1255 * ownership handling.
1256 */
1257
1258 /* If nothing has changed, do nothing */
1259 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1260 return;
1261
1262 /*
1263 * If the two arguments are equal then one fewer reference is granted by the
1264 * caller than we want to take
1265 */
1266 if (rbio != NULL && rbio == wbio)
1267 BIO_up_ref(rbio);
1268
1269 /*
1270 * If only the wbio is changed only adopt one reference.
1271 */
1272 if (rbio == SSL_get_rbio(s)) {
1273 SSL_set0_wbio(s, wbio);
1274 return;
1275 }
1276 /*
1277 * There is an asymmetry here for historical reasons. If only the rbio is
1278 * changed AND the rbio and wbio were originally different, then we only
1279 * adopt one reference.
1280 */
1281 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1282 SSL_set0_rbio(s, rbio);
1283 return;
1284 }
1285
1286 /* Otherwise, adopt both references. */
1287 SSL_set0_rbio(s, rbio);
1288 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1289}
1290
0821bcd4 1291BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1292{
2e7dc7cd 1293 return s->rbio;
0f113f3e 1294}
d02b48c6 1295
0821bcd4 1296BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1297{
2e7dc7cd
MC		 1298 if (s->bbio != NULL) {
1299 /*
1300 * If |bbio| is active, the true caller-configured BIO is its
1301 * |next_bio|.
1302 */
1303 return BIO_next(s->bbio);
1304 }
1305 return s->wbio;
0f113f3e 1306}
d02b48c6 1307
0821bcd4 1308int SSL_get_fd(const SSL *s)
0f113f3e 1309{
2e7dc7cd 1310 return SSL_get_rfd(s);
0f113f3e 1311}
24cbf3ef 1312
0821bcd4 1313int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1314{
1315 int ret = -1;
1316 BIO *b, *r;
1317
1318 b = SSL_get_rbio(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}
d02b48c6 1324
0821bcd4 1325int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1326{
1327 int ret = -1;
1328 BIO *b, *r;
1329
1330 b = SSL_get_wbio(s);
1331 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1332 if (r != NULL)
1333 BIO_get_fd(r, &ret);
26a7d938 1334 return ret;
0f113f3e 1335}
24cbf3ef 1336
bc36ee62 1337#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1338int SSL_set_fd(SSL *s, int fd)
1339{
1340 int ret = 0;
1341 BIO *bio = NULL;
1342
1343 bio = BIO_new(BIO_s_socket());
1344
1345 if (bio == NULL) {
1346 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1347 goto err;
1348 }
1349 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1350 SSL_set_bio(s, bio, bio);
1351 ret = 1;
1352 err:
26a7d938 1353 return ret;
0f113f3e 1354}
d02b48c6 1355
0f113f3e
MC		 1356int SSL_set_wfd(SSL *s, int fd)
1357{
2e7dc7cd 1358 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1359
2e7dc7cd
MC		 1360 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1361 || (int)BIO_get_fd(rbio, NULL) != fd) {
1362 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1363
1364 if (bio == NULL) {
1365 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1366 return 0;
0f113f3e
MC		 1367 }
1368 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1369 SSL_set0_wbio(s, bio);
2e7dc7cd 1370 } else {
65e2d672
MC		 1371 BIO_up_ref(rbio);
1372 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1373 }
1374 return 1;
0f113f3e
MC		 1375}
1376
1377int SSL_set_rfd(SSL *s, int fd)
1378{
2e7dc7cd 1379 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1380
2e7dc7cd
MC		 1381 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1382 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1383 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1384
1385 if (bio == NULL) {
1386 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1387 return 0;
0f113f3e
MC		 1388 }
1389 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1390 SSL_set0_rbio(s, bio);
2e7dc7cd 1391 } else {
65e2d672
MC		 1392 BIO_up_ref(wbio);
1393 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1394 }
1395
1396 return 1;
0f113f3e
MC		 1397}
1398#endif
ca03109c
BM		 1399
1400/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1401size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1402{
1403 size_t ret = 0;
1404
1405 if (s->s3 != NULL) {
1406 ret = s->s3->tmp.finish_md_len;
1407 if (count > ret)
1408 count = ret;
1409 memcpy(buf, s->s3->tmp.finish_md, count);
1410 }
1411 return ret;
1412}
ca03109c
BM		 1413
1414/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1415size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1416{
1417 size_t ret = 0;
ca03109c 1418
0f113f3e
MC		 1419 if (s->s3 != NULL) {
1420 ret = s->s3->tmp.peer_finish_md_len;
1421 if (count > ret)
1422 count = ret;
1423 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1424 }
1425 return ret;
1426}
ca03109c 1427
0821bcd4 1428int SSL_get_verify_mode(const SSL *s)
0f113f3e 1429{
26a7d938 1430 return s->verify_mode;
0f113f3e 1431}
d02b48c6 1432
0821bcd4 1433int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1434{
1435 return X509_VERIFY_PARAM_get_depth(s->param);
1436}
7f89714e 1437
0f113f3e 1438int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1439 return s->verify_callback;
0f113f3e 1440}
d02b48c6 1441
0821bcd4 1442int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1443{
26a7d938 1444 return ctx->verify_mode;
0f113f3e 1445}
d02b48c6 1446
0821bcd4 1447int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1448{
1449 return X509_VERIFY_PARAM_get_depth(ctx->param);
1450}
1451
1452int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1453 return ctx->default_verify_callback;
0f113f3e
MC		 1454}
1455
1456void SSL_set_verify(SSL *s, int mode,
1457 int (*callback) (int ok, X509_STORE_CTX *ctx))
1458{
1459 s->verify_mode = mode;
1460 if (callback != NULL)
1461 s->verify_callback = callback;
1462}
1463
1464void SSL_set_verify_depth(SSL *s, int depth)
1465{
1466 X509_VERIFY_PARAM_set_depth(s->param, depth);
1467}
1468
1469void SSL_set_read_ahead(SSL *s, int yes)
1470{
52e1d7b1 1471 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1472}
d02b48c6 1473
0821bcd4 1474int SSL_get_read_ahead(const SSL *s)
0f113f3e 1475{
52e1d7b1 1476 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1477}
d02b48c6 1478
0821bcd4 1479int SSL_pending(const SSL *s)
0f113f3e 1480{
8b0e934a
MC		 1481 size_t pending = s->method->ssl_pending(s);
1482
0f113f3e
MC		 1483 /*
1484 * SSL_pending cannot work properly if read-ahead is enabled
1485 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1486 * impossible to fix since SSL_pending cannot report errors that may be
1487 * observed while scanning the new data. (Note that SSL_pending() is
1488 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1489 *
1490 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1491 * we just return INT_MAX.
0f113f3e 1492 */
348240c6 1493 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1494}
d02b48c6 1495
49580f25
MC		 1496int SSL_has_pending(const SSL *s)
1497{
1498 /*
1499 * Similar to SSL_pending() but returns a 1 to indicate that we have
1500 * unprocessed data available or 0 otherwise (as opposed to the number of
1501 * bytes available). Unlike SSL_pending() this will take into account
1502 * read_ahead data. A 1 return simply indicates that we have unprocessed
1503 * data. That data may not result in any application data, or we may fail
1504 * to parse the records for some reason.
1505 */
b8c49611 1506 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1507 return 1;
1508
1509 return RECORD_LAYER_read_pending(&s->rlayer);
1510}
1511
0821bcd4 1512X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1513{
1514 X509 *r;
d02b48c6 1515
0f113f3e
MC		 1516 if ((s == NULL) || (s->session == NULL))
1517 r = NULL;
1518 else
1519 r = s->session->peer;
d02b48c6 1520
0f113f3e 1521 if (r == NULL)
26a7d938 1522 return r;
d02b48c6 1523
05f0fb9f 1524 X509_up_ref(r);
0f113f3e 1525
26a7d938 1526 return r;
0f113f3e 1527}
d02b48c6 1528
0821bcd4 1529STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1530{
1531 STACK_OF(X509) *r;
1532
c34b0f99 1533 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1534 r = NULL;
1535 else
c34b0f99 1536 r = s->session->peer_chain;
0f113f3e
MC		 1537
1538 /*
1539 * If we are a client, cert_chain includes the peer's own certificate; if
1540 * we are a server, it does not.
1541 */
1542
26a7d938 1543 return r;
0f113f3e
MC		 1544}
1545
1546/*
1547 * Now in theory, since the calling process own 't' it should be safe to
1548 * modify. We need to be able to read f without being hassled
1549 */
17dd65e6 1550int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1551{
16203f7b 1552 int i;
0f113f3e 1553 /* Do we need to to SSL locking? */
61986d32 1554 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1555 return 0;
69f68237 1556 }
0f113f3e
MC		 1557
1558 /*
87d9cafa 1559 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1560 */
1561 if (t->method != f->method) {
919ba009
VD		 1562 t->method->ssl_free(t);
1563 t->method = f->method;
1564 if (t->method->ssl_new(t) == 0)
1565 return 0;
0f113f3e
MC		 1566 }
1567
2f545ae4 1568 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1569 ssl_cert_free(t->cert);
1570 t->cert = f->cert;
348240c6 1571 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1572 return 0;
69f68237 1573 }
17dd65e6
MC		 1574
1575 return 1;
0f113f3e 1576}
d02b48c6 1577
58964a49 1578/* Fix this so it checks all the valid key/cert options */
0821bcd4 1579int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1580{
a230b26e
EK		 1581 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1582 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1583 return 0;
0f113f3e
MC		 1584 }
1585 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1586 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1587 return 0;
0f113f3e 1588 }
26a7d938
K		 1589 return X509_check_private_key
1590 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1591}
d02b48c6 1592
58964a49 1593/* Fix this function so that it takes an optional type parameter */
0821bcd4 1594int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1595{
1596 if (ssl == NULL) {
1597 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1598 return 0;
0f113f3e 1599 }
0f113f3e
MC		 1600 if (ssl->cert->key->x509 == NULL) {
1601 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1602 return 0;
0f113f3e
MC		 1603 }
1604 if (ssl->cert->key->privatekey == NULL) {
1605 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1606 return 0;
0f113f3e 1607 }
26a7d938
K		 1608 return X509_check_private_key(ssl->cert->key->x509,
1609 ssl->cert->key->privatekey);
0f113f3e 1610}
d02b48c6 1611
07bbc92c
MC		 1612int SSL_waiting_for_async(SSL *s)
1613{
e8aa8b6c 1614 if (s->job)
82676094
MC		 1615 return 1;
1616
07bbc92c
MC		 1617 return 0;
1618}
1619
ff75a257 1620int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1621{
ff75a257
MC		 1622 ASYNC_WAIT_CTX *ctx = s->waitctx;
1623
1624 if (ctx == NULL)
1625 return 0;
1626 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1627}
f4da39d2 1628
ff75a257
MC		 1629int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1630 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1631{
1632 ASYNC_WAIT_CTX *ctx = s->waitctx;
1633
1634 if (ctx == NULL)
1635 return 0;
1636 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1637 numdelfds);
f4da39d2
MC		 1638}
1639
4f43d0e7 1640int SSL_accept(SSL *s)
0f113f3e 1641{
c4c32155 1642 if (s->handshake_func == NULL) {
0f113f3e
MC		 1643 /* Not properly initialized yet */
1644 SSL_set_accept_state(s);
07bbc92c 1645 }
add2f5ca
MC		 1646
1647 return SSL_do_handshake(s);
0f113f3e 1648}
d02b48c6 1649
4f43d0e7 1650int SSL_connect(SSL *s)
0f113f3e 1651{
c4c32155 1652 if (s->handshake_func == NULL) {
0f113f3e
MC		 1653 /* Not properly initialized yet */
1654 SSL_set_connect_state(s);
add2f5ca 1655 }
b31b04d9 1656
add2f5ca 1657 return SSL_do_handshake(s);
0f113f3e 1658}
d02b48c6 1659
0821bcd4 1660long SSL_get_default_timeout(const SSL *s)
0f113f3e 1661{
26a7d938 1662 return s->method->get_timeout();
0f113f3e
MC		 1663}
1664
7fecbf6f 1665static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1666 int (*func) (void *))
1667{
add2f5ca 1668 int ret;
ff75a257
MC		 1669 if (s->waitctx == NULL) {
1670 s->waitctx = ASYNC_WAIT_CTX_new();
1671 if (s->waitctx == NULL)
1672 return -1;
1673 }
e8aa8b6c 1674 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1675 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1676 case ASYNC_ERR:
1677 s->rwstate = SSL_NOTHING;
7fecbf6f 1678 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1679 return -1;
1680 case ASYNC_PAUSE:
1681 s->rwstate = SSL_ASYNC_PAUSED;
1682 return -1;
fc7f190c
MC		 1683 case ASYNC_NO_JOBS:
1684 s->rwstate = SSL_ASYNC_NO_JOBS;
1685 return -1;
add2f5ca
MC		 1686 case ASYNC_FINISH:
1687 s->job = NULL;
1688 return ret;
1689 default:
1690 s->rwstate = SSL_NOTHING;
7fecbf6f 1691 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1692 /* Shouldn't happen */
1693 return -1;
1694 }
1695}
07bbc92c 1696
add2f5ca 1697static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1698{
1699 struct ssl_async_args *args;
1700 SSL *s;
1701 void *buf;
348240c6 1702 size_t num;
07bbc92c
MC		 1703
1704 args = (struct ssl_async_args *)vargs;
1705 s = args->s;
1706 buf = args->buf;
1707 num = args->num;
ec447924
MC		 1708 switch (args->type) {
1709 case READFUNC:
7ee8627f 1710 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1711 case WRITEFUNC:
7ee8627f 1712 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1713 case OTHERFUNC:
1714 return args->f.func_other(s);
1715 }
1716 return -1;
07bbc92c
MC		 1717}
1718
4ee7d3f9 1719int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1720{
c4c32155 1721 if (s->handshake_func == NULL) {
4ee7d3f9 1722 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1723 return -1;
1724 }
1725
1726 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1727 s->rwstate = SSL_NOTHING;
4ee7d3f9 1728 return 0;
0f113f3e 1729 }
07bbc92c 1730
564547e4
MC		 1731 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1732 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1733 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1734 return 0;
1735 }
564547e4
MC		 1736 /*
1737 * If we are a client and haven't received the ServerHello etc then we
1738 * better do that
1739 */
1740 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1741
e8aa8b6c 1742 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1743 struct ssl_async_args args;
eda75751 1744 int ret;
add2f5ca
MC		 1745
1746 args.s = s;
1747 args.buf = buf;
1748 args.num = num;
ec447924
MC		 1749 args.type = READFUNC;
1750 args.f.func_read = s->method->ssl_read;
add2f5ca 1751
eda75751 1752 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1753 *readbytes = s->asyncrw;
eda75751 1754 return ret;
07bbc92c 1755 } else {
54105ddd 1756 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1757 }
0f113f3e
MC		 1758}
1759
4ee7d3f9 1760int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1761{
1762 int ret;
54105ddd 1763 size_t readbytes;
eda75751
MC		 1764
1765 if (num < 0) {
4ee7d3f9 1766 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1767 return -1;
1768 }
1769
4ee7d3f9 1770 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1771
1772 /*
1773 * The cast is safe here because ret should be <= INT_MAX because num is
1774 * <= INT_MAX
1775 */
1776 if (ret > 0)
54105ddd 1777 ret = (int)readbytes;
eda75751
MC		 1778
1779 return ret;
1780}
1781
4ee7d3f9
KR		 1782int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1783{
1784 int ret = ssl_read_internal(s, buf, num, readbytes);
1785
1786 if (ret < 0)
1787 ret = 0;
1788 return ret;
1789}
1790
f533fbd4 1791int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1792{
1793 int ret;
1794
1795 if (!s->server) {
f533fbd4
MC		 1796 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1797 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1798 }
1799
d781d247
MC		 1800 switch (s->early_data_state) {
1801 case SSL_EARLY_DATA_NONE:
1802 if (!SSL_in_before(s)) {
f533fbd4
MC		 1803 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1804 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1805 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1806 }
1807 /* fall through */
1808
1809 case SSL_EARLY_DATA_ACCEPT_RETRY:
1810 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1811 ret = SSL_accept(s);
1812 if (ret <= 0) {
1813 /* NBIO or error */
1814 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1815 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1816 }
1817 /* fall through */
1818
1819 case SSL_EARLY_DATA_READ_RETRY:
1820 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1821 s->early_data_state = SSL_EARLY_DATA_READING;
1822 ret = SSL_read_ex(s, buf, num, readbytes);
1823 /*
ef6c191b
MC		 1824 * State machine will update early_data_state to
1825 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1826 * message
d781d247
MC		 1827 */
1828 if (ret > 0 || (ret <= 0 && s->early_data_state
1829 != SSL_EARLY_DATA_FINISHED_READING)) {
1830 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1831 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1832 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1833 }
1834 } else {
1835 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1836 }
1837 *readbytes = 0;
f533fbd4 1838 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1839
1840 default:
f533fbd4
MC		 1841 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1842 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1843 }
1844}
1845
f5b519c4 1846int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1847{
1848 return s->ext.early_data;
1849}
1850
4ee7d3f9 1851static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1852{
c4c32155 1853 if (s->handshake_func == NULL) {
4ee7d3f9 1854 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1855 return -1;
1856 }
1857
1858 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1859 return 0;
0f113f3e 1860 }
e8aa8b6c 1861 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1862 struct ssl_async_args args;
eda75751 1863 int ret;
0f113f3e 1864
add2f5ca
MC		 1865 args.s = s;
1866 args.buf = buf;
1867 args.num = num;
ec447924
MC		 1868 args.type = READFUNC;
1869 args.f.func_read = s->method->ssl_peek;
07bbc92c 1870
eda75751 1871 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1872 *readbytes = s->asyncrw;
eda75751 1873 return ret;
add2f5ca 1874 } else {
54105ddd 1875 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1876 }
07bbc92c
MC		 1877}
1878
4ee7d3f9 1879int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1880{
1881 int ret;
4ee7d3f9 1882 size_t readbytes;
7ee8627f
MC		 1883
1884 if (num < 0) {
4ee7d3f9 1885 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1886 return -1;
1887 }
1888
4ee7d3f9 1889 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1890
1891 /*
1892 * The cast is safe here because ret should be <= INT_MAX because num is
1893 * <= INT_MAX
1894 */
1895 if (ret > 0)
4ee7d3f9 1896 ret = (int)readbytes;
7ee8627f
MC		 1897
1898 return ret;
1899}
1900
4ee7d3f9
KR		 1901
1902int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1903{
1904 int ret = ssl_peek_internal(s, buf, num, readbytes);
1905
1906 if (ret < 0)
1907 ret = 0;
1908 return ret;
1909}
1910
1911int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1912{
c4c32155 1913 if (s->handshake_func == NULL) {
4ee7d3f9 1914 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1915 return -1;
1916 }
1917
1918 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1919 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1920 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1921 return -1;
0f113f3e 1922 }
07bbc92c 1923
ef6c191b 1924 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1925 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1926 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1927 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1928 return 0;
0a5ece5b 1929 }
564547e4
MC		 1930 /* If we are a client and haven't sent the Finished we better do that */
1931 ossl_statem_check_finish_init(s, 1);
49e7fe12 1932
e8aa8b6c 1933 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1934 int ret;
add2f5ca
MC		 1935 struct ssl_async_args args;
1936
1937 args.s = s;
1938 args.buf = (void *)buf;
1939 args.num = num;
ec447924
MC		 1940 args.type = WRITEFUNC;
1941 args.f.func_write = s->method->ssl_write;
add2f5ca 1942
7ee8627f
MC		 1943 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1944 *written = s->asyncrw;
1945 return ret;
07bbc92c 1946 } else {
7ee8627f 1947 return s->method->ssl_write(s, buf, num, written);
07bbc92c 1948 }
0f113f3e 1949}
d02b48c6 1950
4ee7d3f9
KR		 1951int SSL_write(SSL *s, const void *buf, int num)
1952{
1953 int ret;
1954 size_t written;
1955
1956 if (num < 0) {
1957 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1958 return -1;
1959 }
1960
1961 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1962
1963 /*
1964 * The cast is safe here because ret should be <= INT_MAX because num is
1965 * <= INT_MAX
1966 */
1967 if (ret > 0)
1968 ret = (int)written;
1969
1970 return ret;
1971}
1972
1973int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1974{
1975 int ret = ssl_write_internal(s, buf, num, written);
1976
1977 if (ret < 0)
1978 ret = 0;
1979 return ret;
1980}
1981
0665b4ed 1982int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 1983{
a0cb628b 1984 int ret, early_data_state;
2a8db717 1985 size_t writtmp;
f7414b08 1986 uint32_t partialwrite;
49e7fe12 1987
49e7fe12
MC		 1988 switch (s->early_data_state) {
1989 case SSL_EARLY_DATA_NONE:
09f28874
MC		 1990 if (s->server
1991 || !SSL_in_before(s)
add8d0e9
MC		 1992 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1993 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 1994 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1995 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1996 return 0;
1997 }
1998 /* fall through */
1999
2000 case SSL_EARLY_DATA_CONNECT_RETRY:
2001 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2002 ret = SSL_connect(s);
2003 if (ret <= 0) {
2004 /* NBIO or error */
2005 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2006 return 0;
2007 }
2008 /* fall through */
2009
2010 case SSL_EARLY_DATA_WRITE_RETRY:
2011 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2012 /*
2013 * We disable partial write for early data because we don't keep track
2014 * of how many bytes we've written between the SSL_write_ex() call and
2015 * the flush if the flush needs to be retried)
2016 */
2017 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2018 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2019 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2020 s->mode |= partialwrite;
2a8db717
MC		 2021 if (!ret) {
2022 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2023 return ret;
2024 }
2025 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2026 /* fall through */
2027
2028 case SSL_EARLY_DATA_WRITE_FLUSH:
2029 /* The buffering BIO is still in place so we need to flush it */
2030 if (statem_flush(s) != 1)
2031 return 0;
2a8db717 2032 *written = num;
49e7fe12 2033 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2034 return 1;
49e7fe12 2035
116d0da5 2036 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2037 case SSL_EARLY_DATA_READ_RETRY:
2038 early_data_state = s->early_data_state;
09f28874
MC		 2039 /* We are a server writing to an unauthenticated client */
2040 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2041 ret = SSL_write_ex(s, buf, num, written);
bbea9f2c 2042 s->early_data_state = early_data_state;
09f28874
MC		 2043 return ret;
2044
49e7fe12 2045 default:
09f28874 2046 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2047 return 0;
2048 }
2049}
2050
4f43d0e7 2051int SSL_shutdown(SSL *s)
0f113f3e
MC		 2052{
2053 /*
2054 * Note that this function behaves differently from what one might
2055 * expect. Return values are 0 for no success (yet), 1 for success; but
2056 * calling it once is usually not enough, even if blocking I/O is used
2057 * (see ssl3_shutdown).
2058 */
2059
c4c32155 2060 if (s->handshake_func == NULL) {
0f113f3e
MC		 2061 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2062 return -1;
2063 }
2064
64f9f406 2065 if (!SSL_in_init(s)) {
e8aa8b6c 2066 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2067 struct ssl_async_args args;
ec447924 2068
64f9f406
MC		 2069 args.s = s;
2070 args.type = OTHERFUNC;
2071 args.f.func_other = s->method->ssl_shutdown;
ec447924 2072
64f9f406
MC		 2073 return ssl_start_async_job(s, &args, ssl_io_intern);
2074 } else {
2075 return s->method->ssl_shutdown(s);
2076 }
ec447924 2077 } else {
64f9f406
MC		 2078 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2079 return -1;
ec447924 2080 }
0f113f3e 2081}
d02b48c6 2082
4fbfe86a 2083int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2084{
f14afcaa 2085 /*
a9998e2f 2086 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2087 * negotiated, and that it is appropriate to call SSL_key_update() instead
2088 * of SSL_renegotiate().
2089 */
44c04a2e
MC		 2090 if (!SSL_IS_TLS13(s)) {
2091 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2092 return 0;
2093 }
2094
2095 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2096 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2097 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2098 return 0;
2099 }
2100
2101 if (!SSL_is_init_finished(s)) {
2102 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2103 return 0;
2104 }
2105
2106 ossl_statem_set_in_init(s, 1);
44c04a2e 2107 s->key_update = updatetype;
44c04a2e
MC		 2108 return 1;
2109}
2110
4fbfe86a 2111int SSL_get_key_update_type(SSL *s)
53d1d07d
MC		 2112{
2113 return s->key_update;
2114}
2115
4f43d0e7 2116int SSL_renegotiate(SSL *s)
0f113f3e 2117{
44c04a2e
MC		 2118 if (SSL_IS_TLS13(s)) {
2119 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2120 return 0;
44c04a2e 2121 }
cda6b998 2122
db0f35dd
TS		 2123 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2124 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2125 return 0;
2126 }
44959ee4 2127
db0f35dd 2128 s->renegotiate = 1;
0f113f3e 2129 s->new_session = 1;
44959ee4 2130
26a7d938 2131 return s->method->ssl_renegotiate(s);
0f113f3e 2132}
d02b48c6 2133
44959ee4 2134int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2135{
db0f35dd
TS		 2136 if (SSL_IS_TLS13(s)) {
2137 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2138 return 0;
db0f35dd 2139 }
cda6b998 2140
db0f35dd
TS		 2141 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2142 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2143 return 0;
2144 }
c519e89f 2145
db0f35dd 2146 s->renegotiate = 1;
0f113f3e 2147 s->new_session = 0;
c519e89f 2148
26a7d938 2149 return s->method->ssl_renegotiate(s);
0f113f3e 2150}
44959ee4 2151
6b0e9fac 2152int SSL_renegotiate_pending(SSL *s)
0f113f3e
MC		 2153{
2154 /*
2155 * becomes true when negotiation is requested; false again once a
2156 * handshake has finished
2157 */
2158 return (s->renegotiate != 0);
2159}
2160
2161long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2162{
2163 long l;
2164
2165 switch (cmd) {
2166 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2167 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2168 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2169 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2170 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2171 return l;
0f113f3e
MC		 2172
2173 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2174 s->msg_callback_arg = parg;
2175 return 1;
2176
0f113f3e
MC		 2177 case SSL_CTRL_MODE:
2178 return (s->mode |= larg);
2179 case SSL_CTRL_CLEAR_MODE:
2180 return (s->mode &= ~larg);
2181 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2182 return (long)s->max_cert_list;
0f113f3e 2183 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2184 if (larg < 0)
2185 return 0;
2186 l = (long)s->max_cert_list;
2187 s->max_cert_list = (size_t)larg;
2188 return l;
0f113f3e
MC		 2189 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2190 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2191 return 0;
2192 s->max_send_fragment = larg;
d102d9df
MC		 2193 if (s->max_send_fragment < s->split_send_fragment)
2194 s->split_send_fragment = s->max_send_fragment;
2195 return 1;
2196 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2197 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2198 return 0;
2199 s->split_send_fragment = larg;
0f113f3e 2200 return 1;
d102d9df
MC		 2201 case SSL_CTRL_SET_MAX_PIPELINES:
2202 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2203 return 0;
2204 s->max_pipelines = larg;
94777c9c
MC		 2205 if (larg > 1)
2206 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2207 return 1;
0f113f3e
MC		 2208 case SSL_CTRL_GET_RI_SUPPORT:
2209 if (s->s3)
2210 return s->s3->send_connection_binding;
2211 else
2212 return 0;
2213 case SSL_CTRL_CERT_FLAGS:
2214 return (s->cert->cert_flags |= larg);
2215 case SSL_CTRL_CLEAR_CERT_FLAGS:
2216 return (s->cert->cert_flags &= ~larg);
2217
2218 case SSL_CTRL_GET_RAW_CIPHERLIST:
2219 if (parg) {
76106e60 2220 if (s->s3->tmp.ciphers_raw == NULL)
0f113f3e 2221 return 0;
76106e60
DSH		 2222 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2223 return (int)s->s3->tmp.ciphers_rawlen;
e9fa092e
EK		 2224 } else {
2225 return TLS_CIPHER_LEN;
2226 }
c5364614 2227 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2228 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2229 return -1;
dccd20d1 2230 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2231 return 1;
2232 else
2233 return 0;
7946ab33 2234 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2235 return ssl_check_allowed_versions(larg, s->max_proto_version)
2236 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2237 &s->min_proto_version);
3edabd3c
CH		 2238 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2239 return s->min_proto_version;
7946ab33 2240 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2241 return ssl_check_allowed_versions(s->min_proto_version, larg)
2242 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2243 &s->max_proto_version);
3edabd3c
CH		 2244 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2245 return s->max_proto_version;
0f113f3e 2246 default:
26a7d938 2247 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2248 }
2249}
2250
2251long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2252{
2253 switch (cmd) {
2254 case SSL_CTRL_SET_MSG_CALLBACK:
2255 s->msg_callback = (void (*)
2256 (int write_p, int version, int content_type,
2257 const void *buf, size_t len, SSL *ssl,
2258 void *arg))(fp);
2259 return 1;
2260
2261 default:
26a7d938 2262 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2263 }
2264}
d3442bc7 2265
3c1d6bbc 2266LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2267{
2268 return ctx->sessions;
2269}
2270
2271long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2272{
2273 long l;
1fcb4e4d 2274 int i;
0f113f3e
MC		 2275 /* For some cases with ctx == NULL perform syntax checks */
2276 if (ctx == NULL) {
2277 switch (cmd) {
14536c8c 2278#ifndef OPENSSL_NO_EC
de4d764e
MC		 2279 case SSL_CTRL_SET_GROUPS_LIST:
2280 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2281#endif
2282 case SSL_CTRL_SET_SIGALGS_LIST:
2283 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2284 return tls1_set_sigalgs_list(NULL, parg, 0);
2285 default:
2286 return 0;
2287 }
2288 }
2289
2290 switch (cmd) {
2291 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2292 return ctx->read_ahead;
0f113f3e
MC		 2293 case SSL_CTRL_SET_READ_AHEAD:
2294 l = ctx->read_ahead;
2295 ctx->read_ahead = larg;
26a7d938 2296 return l;
0f113f3e
MC		 2297
2298 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2299 ctx->msg_callback_arg = parg;
2300 return 1;
2301
2302 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2303 return (long)ctx->max_cert_list;
0f113f3e 2304 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2305 if (larg < 0)
2306 return 0;
2307 l = (long)ctx->max_cert_list;
2308 ctx->max_cert_list = (size_t)larg;
2309 return l;
0f113f3e
MC		 2310
2311 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2312 if (larg < 0)
2313 return 0;
2314 l = (long)ctx->session_cache_size;
2315 ctx->session_cache_size = (size_t)larg;
2316 return l;
0f113f3e 2317 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2318 return (long)ctx->session_cache_size;
0f113f3e
MC		 2319 case SSL_CTRL_SET_SESS_CACHE_MODE:
2320 l = ctx->session_cache_mode;
2321 ctx->session_cache_mode = larg;
26a7d938 2322 return l;
0f113f3e 2323 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2324 return ctx->session_cache_mode;
0f113f3e
MC		 2325
2326 case SSL_CTRL_SESS_NUMBER:
26a7d938 2327 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2328 case SSL_CTRL_SESS_CONNECT:
1fcb4e4d
BK		 2329 return CRYPTO_atomic_read(&ctx->stats.sess_connect, &i, ctx->lock)
2330 ? i : 0;
0f113f3e 2331 case SSL_CTRL_SESS_CONNECT_GOOD:
1fcb4e4d
BK		 2332 return CRYPTO_atomic_read(&ctx->stats.sess_connect_good, &i, ctx->lock)
2333 ? i : 0;
0f113f3e 2334 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1fcb4e4d
BK		 2335 return CRYPTO_atomic_read(&ctx->stats.sess_connect_renegotiate, &i,
2336 ctx->lock)
2337 ? i : 0;
0f113f3e 2338 case SSL_CTRL_SESS_ACCEPT:
1fcb4e4d
BK		 2339 return CRYPTO_atomic_read(&ctx->stats.sess_accept, &i, ctx->lock)
2340 ? i : 0;
0f113f3e 2341 case SSL_CTRL_SESS_ACCEPT_GOOD:
1fcb4e4d
BK		 2342 return CRYPTO_atomic_read(&ctx->stats.sess_accept_good, &i, ctx->lock)
2343 ? i : 0;
0f113f3e 2344 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1fcb4e4d
BK		 2345 return CRYPTO_atomic_read(&ctx->stats.sess_accept_renegotiate, &i,
2346 ctx->lock)
2347 ? i : 0;
0f113f3e 2348 case SSL_CTRL_SESS_HIT:
1fcb4e4d
BK		 2349 return CRYPTO_atomic_read(&ctx->stats.sess_hit, &i, ctx->lock)
2350 ? i : 0;
0f113f3e 2351 case SSL_CTRL_SESS_CB_HIT:
1fcb4e4d
BK		 2352 return CRYPTO_atomic_read(&ctx->stats.sess_cb_hit, &i, ctx->lock)
2353 ? i : 0;
0f113f3e 2354 case SSL_CTRL_SESS_MISSES:
1fcb4e4d
BK		 2355 return CRYPTO_atomic_read(&ctx->stats.sess_miss, &i, ctx->lock)
2356 ? i : 0;
0f113f3e 2357 case SSL_CTRL_SESS_TIMEOUTS:
1fcb4e4d
BK		 2358 return CRYPTO_atomic_read(&ctx->stats.sess_timeout, &i, ctx->lock)
2359 ? i : 0;
0f113f3e 2360 case SSL_CTRL_SESS_CACHE_FULL:
1fcb4e4d
BK		 2361 return CRYPTO_atomic_read(&ctx->stats.sess_cache_full, &i, ctx->lock)
2362 ? i : 0;
0f113f3e
MC		 2363 case SSL_CTRL_MODE:
2364 return (ctx->mode |= larg);
2365 case SSL_CTRL_CLEAR_MODE:
2366 return (ctx->mode &= ~larg);
2367 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2368 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2369 return 0;
2370 ctx->max_send_fragment = larg;
d102d9df 2371 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2372 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2373 return 1;
d102d9df 2374 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2375 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2376 return 0;
2377 ctx->split_send_fragment = larg;
2378 return 1;
2379 case SSL_CTRL_SET_MAX_PIPELINES:
2380 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2381 return 0;
2382 ctx->max_pipelines = larg;
07077415 2383 return 1;
0f113f3e
MC		 2384 case SSL_CTRL_CERT_FLAGS:
2385 return (ctx->cert->cert_flags |= larg);
2386 case SSL_CTRL_CLEAR_CERT_FLAGS:
2387 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2388 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2389 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2390 && ssl_set_version_bound(ctx->method->version, (int)larg,
2391 &ctx->min_proto_version);
3edabd3c
CH		 2392 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2393 return ctx->min_proto_version;
7946ab33 2394 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2395 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2396 && ssl_set_version_bound(ctx->method->version, (int)larg,
2397 &ctx->max_proto_version);
3edabd3c
CH		 2398 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2399 return ctx->max_proto_version;
0f113f3e 2400 default:
26a7d938 2401 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2402 }
2403}
2404
2405long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2406{
2407 switch (cmd) {
2408 case SSL_CTRL_SET_MSG_CALLBACK:
2409 ctx->msg_callback = (void (*)
2410 (int write_p, int version, int content_type,
2411 const void *buf, size_t len, SSL *ssl,
2412 void *arg))(fp);
2413 return 1;
2414
2415 default:
26a7d938 2416 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2417 }
2418}
d3442bc7 2419
ccd86b68 2420int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2421{
90d9e49a
DSH		 2422 if (a->id > b->id)
2423 return 1;
2424 if (a->id < b->id)
2425 return -1;
2426 return 0;
0f113f3e
MC		 2427}
2428
2429int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2430 const SSL_CIPHER *const *bp)
2431{
90d9e49a
DSH		 2432 if ((*ap)->id > (*bp)->id)
2433 return 1;
2434 if ((*ap)->id < (*bp)->id)
2435 return -1;
2436 return 0;
0f113f3e 2437}
d02b48c6 2438
4f43d0e7 2439/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2440 * preference */
0821bcd4 2441STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2442{
2443 if (s != NULL) {
2444 if (s->cipher_list != NULL) {
26a7d938 2445 return s->cipher_list;
0f113f3e 2446 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2447 return s->ctx->cipher_list;
0f113f3e
MC		 2448 }
2449 }
26a7d938 2450 return NULL;
0f113f3e
MC		 2451}
2452
831eef2c
NM		 2453STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2454{
2455 if ((s == NULL) || (s->session == NULL) || !s->server)
2456 return NULL;
2457 return s->session->ciphers;
2458}
2459
8b8e5bed 2460STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2461{
2462 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2463 int i;
1d0c08b4 2464
0f113f3e
MC		 2465 ciphers = SSL_get_ciphers(s);
2466 if (!ciphers)
2467 return NULL;
1d0c08b4
MC		 2468 if (!ssl_set_client_disabled(s))
2469 return NULL;
0f113f3e
MC		 2470 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2471 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2472 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2473 if (!sk)
2474 sk = sk_SSL_CIPHER_new_null();
2475 if (!sk)
2476 return NULL;
2477 if (!sk_SSL_CIPHER_push(sk, c)) {
2478 sk_SSL_CIPHER_free(sk);
2479 return NULL;
2480 }
2481 }
2482 }
2483 return sk;
2484}
8b8e5bed 2485
4f43d0e7 2486/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2487 * algorithm id */
f73e07cf 2488STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2489{
2490 if (s != NULL) {
2491 if (s->cipher_list_by_id != NULL) {
26a7d938 2492 return s->cipher_list_by_id;
0f113f3e 2493 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2494 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2495 }
2496 }
26a7d938 2497 return NULL;
0f113f3e 2498}
d02b48c6 2499
4f43d0e7 2500/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2501const char *SSL_get_cipher_list(const SSL *s, int n)
2502{
4a640fb6 2503 const SSL_CIPHER *c;
0f113f3e
MC		 2504 STACK_OF(SSL_CIPHER) *sk;
2505
2506 if (s == NULL)
26a7d938 2507 return NULL;
0f113f3e
MC		 2508 sk = SSL_get_ciphers(s);
2509 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2510 return NULL;
0f113f3e
MC		 2511 c = sk_SSL_CIPHER_value(sk, n);
2512 if (c == NULL)
26a7d938
K		 2513 return NULL;
2514 return c->name;
0f113f3e 2515}
d02b48c6 2516
9d5ac953
KY		 2517/** return a STACK of the ciphers available for the SSL_CTX and in order of
2518 * preference */
2519STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2520{
2521 if (ctx != NULL)
2522 return ctx->cipher_list;
2523 return NULL;
2524}
2525
25f923dd 2526/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2527int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2528{
2529 STACK_OF(SSL_CIPHER) *sk;
2530
f865b081
MC		 2531 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2532 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2533 ctx->cert);
0f113f3e
MC		 2534 /*
2535 * ssl_create_cipher_list may return an empty stack if it was unable to
2536 * find a cipher matching the given rule string (for example if the rule
2537 * string specifies a cipher which has been disabled). This is not an
2538 * error as far as ssl_create_cipher_list is concerned, and hence
2539 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2540 */
2541 if (sk == NULL)
2542 return 0;
2543 else if (sk_SSL_CIPHER_num(sk) == 0) {
2544 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2545 return 0;
2546 }
2547 return 1;
2548}
d02b48c6 2549
4f43d0e7 2550/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2551int SSL_set_cipher_list(SSL *s, const char *str)
2552{
2553 STACK_OF(SSL_CIPHER) *sk;
2554
f865b081
MC		 2555 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2556 &s->cipher_list, &s->cipher_list_by_id, str,
2557 s->cert);
0f113f3e
MC		 2558 /* see comment in SSL_CTX_set_cipher_list */
2559 if (sk == NULL)
2560 return 0;
2561 else if (sk_SSL_CIPHER_num(sk) == 0) {
2562 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2563 return 0;
2564 }
2565 return 1;
2566}
d02b48c6 2567
f865b081
MC		 2568static int ciphersuite_cb(const char *elem, int len, void *arg)
2569{
2570 STACK_OF(SSL_CIPHER) *ciphersuites = (STACK_OF(SSL_CIPHER) *)arg;
2571 const SSL_CIPHER *cipher;
2572 /* Arbitrary sized temp buffer for the cipher name. Should be big enough */
2573 char name[80];
2574
2575 if (len > (int)(sizeof(name) - 1)) {
2576 SSLerr(SSL_F_CIPHERSUITE_CB, SSL_R_NO_CIPHER_MATCH);
2577 return 0;
2578 }
2579
2580 memcpy(name, elem, len);
2581 name[len] = '\0';
2582
2583 cipher = ssl3_get_cipher_by_std_name(name);
2584 if (cipher == NULL) {
2585 SSLerr(SSL_F_CIPHERSUITE_CB, SSL_R_NO_CIPHER_MATCH);
2586 return 0;
2587 }
2588
2589 if (!sk_SSL_CIPHER_push(ciphersuites, cipher)) {
2590 SSLerr(SSL_F_CIPHERSUITE_CB, ERR_R_INTERNAL_ERROR);
2591 return 0;
2592 }
2593
2594 return 1;
2595}
2596
2597static int set_ciphersuites(STACK_OF(SSL_CIPHER) **currciphers, const char *str)
2598{
2599 STACK_OF(SSL_CIPHER) *newciphers = sk_SSL_CIPHER_new_null();
2600
2601 if (newciphers == NULL)
2602 return 0;
2603
2604 /* Parse the list. We explicitly allow an empty list */
2605 if (*str != '\0'
2606 && !CONF_parse_list(str, ':', 1, ciphersuite_cb, newciphers)) {
2607 sk_SSL_CIPHER_free(newciphers);
2608 return 0;
2609 }
2610 sk_SSL_CIPHER_free(*currciphers);
2611 *currciphers = newciphers;
2612
2613 return 1;
2614}
2615
2616static int update_cipher_list(STACK_OF(SSL_CIPHER) *cipher_list,
2617 STACK_OF(SSL_CIPHER) *tls13_ciphersuites)
2618{
2619 int i;
2620
2621 /*
2622 * Delete any existing TLSv1.3 ciphersuites. These are always first in the
2623 * list.
2624 */
2625 while (sk_SSL_CIPHER_num(cipher_list) > 0
2626 && sk_SSL_CIPHER_value(cipher_list, 0)->min_tls == TLS1_3_VERSION)
2627 sk_SSL_CIPHER_delete(cipher_list, 0);
2628
2629 /* Insert the new TLSv1.3 ciphersuites */
2630 for (i = 0; i < sk_SSL_CIPHER_num(tls13_ciphersuites); i++)
2631 sk_SSL_CIPHER_insert(cipher_list,
2632 sk_SSL_CIPHER_value(tls13_ciphersuites, i), i);
2633
2634 return 1;
2635}
2636
2637int SSL_CTX_set_ciphersuites(SSL_CTX *ctx, const char *str)
2638{
2639 int ret = set_ciphersuites(&(ctx->tls13_ciphersuites), str);
2640
2641 if (ret && ctx->cipher_list != NULL) {
2642 /* We already have a cipher_list, so we need to update it */
2643 return update_cipher_list(ctx->cipher_list, ctx->tls13_ciphersuites);
2644 }
2645
2646 return ret;
2647}
2648
2649int SSL_set_ciphersuites(SSL *s, const char *str)
2650{
2651 int ret = set_ciphersuites(&(s->tls13_ciphersuites), str);
2652
2653 if (ret && s->cipher_list != NULL) {
2654 /* We already have a cipher_list, so we need to update it */
2655 return update_cipher_list(s->cipher_list, s->tls13_ciphersuites);
2656 }
2657
2658 return ret;
2659}
2660
0f113f3e
MC		 2661char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2662{
2663 char *p;
2664 STACK_OF(SSL_CIPHER) *sk;
4a640fb6 2665 const SSL_CIPHER *c;
0f113f3e
MC		 2666 int i;
2667
2668 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
26a7d938 2669 return NULL;
0f113f3e
MC		 2670
2671 p = buf;
2672 sk = s->session->ciphers;
2673
2674 if (sk_SSL_CIPHER_num(sk) == 0)
2675 return NULL;
2676
2677 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2678 int n;
2679
2680 c = sk_SSL_CIPHER_value(sk, i);
2681 n = strlen(c->name);
2682 if (n + 1 > len) {
2683 if (p != buf)
2684 --p;
2685 *p = '\0';
2686 return buf;
2687 }
4cacc9d5 2688 strcpy(p, c->name);
0f113f3e
MC		 2689 p += n;
2690 *(p++) = ':';
2691 len -= n + 1;
2692 }
2693 p[-1] = '\0';
26a7d938 2694 return buf;
0f113f3e
MC		 2695}
2696
52b8dad8 2697/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2698 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2699 */
2700
f1fd4544 2701const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2702{
2703 if (type != TLSEXT_NAMETYPE_host_name)
2704 return NULL;
a13c20f6 2705
aff8c126
RS		 2706 return s->session && !s->ext.hostname ?
2707 s->session->ext.hostname : s->ext.hostname;
0f113f3e 2708}
ed3883d2 2709
f1fd4544 2710int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2711{
2712 if (s->session
aff8c126
RS		 2713 && (!s->ext.hostname ? s->session->
2714 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2715 return TLSEXT_NAMETYPE_host_name;
2716 return -1;
2717}
ee2ffc27 2718
0f113f3e
MC		 2719/*
2720 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2721 * expected that this function is called from the callback set by
0f113f3e
MC		 2722 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2723 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2724 * not included in the length. A byte string of length 0 is invalid. No byte
2725 * string may be truncated. The current, but experimental algorithm for
2726 * selecting the protocol is: 1) If the server doesn't support NPN then this
2727 * is indicated to the callback. In this case, the client application has to
2728 * abort the connection or have a default application level protocol. 2) If
2729 * the server supports NPN, but advertises an empty list then the client
f430ba31 2730 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2731 * fallback case was enacted. 3) Otherwise, the client finds the first
2732 * protocol in the server's list that it supports and selects this protocol.
2733 * This is because it's assumed that the server has better information about
2734 * which protocol a client should use. 4) If the client doesn't support any
2735 * of the server's advertised protocols, then this is treated the same as
2736 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2737 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2738 */
0f113f3e
MC		 2739int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2740 const unsigned char *server,
2741 unsigned int server_len,
a230b26e 2742 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2743{
2744 unsigned int i, j;
2745 const unsigned char *result;
2746 int status = OPENSSL_NPN_UNSUPPORTED;
2747
2748 /*
2749 * For each protocol in server preference order, see if we support it.
2750 */
2751 for (i = 0; i < server_len;) {
2752 for (j = 0; j < client_len;) {
2753 if (server[i] == client[j] &&
2754 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2755 /* We found a match */
2756 result = &server[i];
2757 status = OPENSSL_NPN_NEGOTIATED;
2758 goto found;
2759 }
2760 j += client[j];
2761 j++;
2762 }
2763 i += server[i];
2764 i++;
2765 }
2766
2767 /* There's no overlap between our protocols and the server's list. */
2768 result = client;
2769 status = OPENSSL_NPN_NO_OVERLAP;
2770
2771 found:
2772 *out = (unsigned char *)result + 1;
2773 *outlen = result[0];
2774 return status;
2775}
ee2ffc27 2776
e481f9b9 2777#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2778/*
2779 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2780 * client's requested protocol for this connection and returns 0. If the
2781 * client didn't request any protocol, then *data is set to NULL. Note that
2782 * the client can request any protocol it chooses. The value returned from
2783 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2784 * provided by the callback.
2785 */
0f113f3e
MC		 2786void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2787 unsigned *len)
2788{
aff8c126 2789 *data = s->ext.npn;
0f113f3e
MC		 2790 if (!*data) {
2791 *len = 0;
2792 } else {
aff8c126 2793 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2794 }
2795}
2796
2797/*
aff8c126 2798 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2799 * a TLS server needs a list of supported protocols for Next Protocol
2800 * Negotiation. The returned list must be in wire format. The list is
2801 * returned by setting |out| to point to it and |outlen| to its length. This
2802 * memory will not be modified, but one should assume that the SSL* keeps a
2803 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2804 * wishes to advertise. Otherwise, no such extension will be included in the
2805 * ServerHello.
2806 */
aff8c126 2807void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2808 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2809 void *arg)
0f113f3e 2810{
aff8c126
RS		 2811 ctx->ext.npn_advertised_cb = cb;
2812 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2813}
2814
2815/*
2816 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2817 * client needs to select a protocol from the server's provided list. |out|
2818 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2819 * The length of the protocol name must be written into |outlen|. The
2820 * server's advertised protocols are provided in |in| and |inlen|. The
2821 * callback can assume that |in| is syntactically valid. The client must
2822 * select a protocol. It is fatal to the connection if this callback returns
2823 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2824 */
aff8c126 2825void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2826 SSL_CTX_npn_select_cb_func cb,
aff8c126 2827 void *arg)
0f113f3e 2828{
aff8c126
RS		 2829 ctx->ext.npn_select_cb = cb;
2830 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2831}
e481f9b9 2832#endif
a398f821 2833
0f113f3e
MC		 2834/*
2835 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2836 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2837 * length-prefixed strings). Returns 0 on success.
2838 */
2839int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2840 unsigned int protos_len)
0f113f3e 2841{
aff8c126
RS		 2842 OPENSSL_free(ctx->ext.alpn);
2843 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2844 if (ctx->ext.alpn == NULL) {
72e9be3d 2845 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2846 return 1;
72e9be3d 2847 }
aff8c126 2848 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2849
2850 return 0;
2851}
2852
2853/*
2854 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2855 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2856 * length-prefixed strings). Returns 0 on success.
2857 */
2858int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2859 unsigned int protos_len)
0f113f3e 2860{
aff8c126
RS		 2861 OPENSSL_free(ssl->ext.alpn);
2862 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2863 if (ssl->ext.alpn == NULL) {
72e9be3d 2864 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2865 return 1;
72e9be3d 2866 }
aff8c126 2867 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2868
2869 return 0;
2870}
2871
2872/*
2873 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2874 * called during ClientHello processing in order to select an ALPN protocol
2875 * from the client's list of offered protocols.
2876 */
2877void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2878 SSL_CTX_alpn_select_cb_func cb,
2879 void *arg)
0f113f3e 2880{
aff8c126
RS		 2881 ctx->ext.alpn_select_cb = cb;
2882 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2883}
2884
2885/*
69687aa8
F		 2886 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2887 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2888 * (not including the leading length-prefix byte). If the server didn't
2889 * respond with a negotiated protocol then |*len| will be zero.
2890 */
6f017a8f 2891void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2892 unsigned int *len)
0f113f3e
MC		 2893{
2894 *data = NULL;
2895 if (ssl->s3)
2896 *data = ssl->s3->alpn_selected;
2897 if (*data == NULL)
2898 *len = 0;
2899 else
348240c6 2900 *len = (unsigned int)ssl->s3->alpn_selected_len;
0f113f3e
MC		 2901}
2902
74b4b494 2903int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2904 const char *label, size_t llen,
23cec1f4 2905 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2906 int use_context)
2907{
c8a18468 2908 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2909 return -1;
e0af0405 2910
0f113f3e 2911 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2912 llen, context,
2913 contextlen, use_context);
0f113f3e 2914}
e0af0405 2915
b38ede80
TT		 2916int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2917 const char *label, size_t llen,
2918 const unsigned char *context,
2919 size_t contextlen)
2920{
2921 if (s->version != TLS1_3_VERSION)
2922 return 0;
2923
2924 return tls13_export_keying_material_early(s, out, olen, label, llen,
2925 context, contextlen);
2926}
2927
3c1d6bbc 2928static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2929{
bd5d27c1 2930 const unsigned char *session_id = a->session_id;
0f113f3e 2931 unsigned long l;
bd5d27c1
DB		 2932 unsigned char tmp_storage[4];
2933
2934 if (a->session_id_length < sizeof(tmp_storage)) {
2935 memset(tmp_storage, 0, sizeof(tmp_storage));
2936 memcpy(tmp_storage, a->session_id, a->session_id_length);
2937 session_id = tmp_storage;
2938 }
0f113f3e
MC		 2939
2940 l = (unsigned long)
bd5d27c1
DB		 2941 ((unsigned long)session_id[0]) |
2942 ((unsigned long)session_id[1] << 8L) |
2943 ((unsigned long)session_id[2] << 16L) |
2944 ((unsigned long)session_id[3] << 24L);
26a7d938 2945 return l;
0f113f3e
MC		 2946}
2947
2948/*
2949 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 2950 * coarser function than this one) is changed, ensure
0f113f3e
MC		 2951 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2952 * being able to construct an SSL_SESSION that will collide with any existing
2953 * session with a matching session ID.
2954 */
2955static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2956{
2957 if (a->ssl_version != b->ssl_version)
208fb891 2958 return 1;
0f113f3e 2959 if (a->session_id_length != b->session_id_length)
208fb891 2960 return 1;
26a7d938 2961 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 2962}
2963
2964/*
2965 * These wrapper functions should remain rather than redeclaring
d0fa136c 2966 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 2967 * variable. The reason is that the functions aren't static, they're exposed
2968 * via ssl.h.
2969 */
97b17195 2970
4ebb342f 2971SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 2972{
2973 SSL_CTX *ret = NULL;
2974
2975 if (meth == NULL) {
2976 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 2977 return NULL;
0f113f3e
MC		 2978 }
2979
0fc32b07
MC		 2980 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2981 return NULL;
7fa792d1 2982
0f113f3e
MC		 2983 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2984 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2985 goto err;
2986 }
b51bce94 2987 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 2988 if (ret == NULL)
2989 goto err;
2990
0f113f3e 2991 ret->method = meth;
7946ab33
KR		 2992 ret->min_proto_version = 0;
2993 ret->max_proto_version = 0;
0f113f3e
MC		 2994 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2995 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 2996 /* We take the system default. */
0f113f3e 2997 ret->session_timeout = meth->get_timeout();
0f113f3e 2998 ret->references = 1;
16203f7b
AG		 2999 ret->lock = CRYPTO_THREAD_lock_new();
3000 if (ret->lock == NULL) {
3001 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3002 OPENSSL_free(ret);
3003 return NULL;
3004 }
0f113f3e 3005 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3006 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3007 if ((ret->cert = ssl_cert_new()) == NULL)
3008 goto err;
3009
62d0577e 3010 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3011 if (ret->sessions == NULL)
3012 goto err;
3013 ret->cert_store = X509_STORE_new();
3014 if (ret->cert_store == NULL)
3015 goto err;
ed29e82a
RP		 3016#ifndef OPENSSL_NO_CT
3017 ret->ctlog_store = CTLOG_STORE_new();
3018 if (ret->ctlog_store == NULL)
3019 goto err;
3020#endif
f865b081
MC		 3021
3022 if (!SSL_CTX_set_ciphersuites(ret,
3023 "TLS_AES_256_GCM_SHA384:"
3024 "TLS_CHACHA20_POLY1305_SHA256:"
3025 "TLS_AES_128_GCM_SHA256"))
3026 goto err;
3027
61986d32 3028 if (!ssl_create_cipher_list(ret->method,
f865b081 3029 ret->tls13_ciphersuites,
a230b26e
EK		 3030 &ret->cipher_list, &ret->cipher_list_by_id,
3031 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3032 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 3033 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3034 goto err2;
3035 }
3036
3037 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3038 if (ret->param == NULL)
0f113f3e
MC		 3039 goto err;
3040
3041 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3042 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3043 goto err2;
3044 }
3045 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3046 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3047 goto err2;
3048 }
3049
fa7c2637 3050 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3051 goto err;
3052
25a807bc
F		 3053 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3054 goto err;
0f113f3e 3055
0f113f3e
MC		 3056 /* No compression for DTLS */
3057 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3058 ret->comp_methods = SSL_COMP_get_compression_methods();
3059
3060 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3061 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3062
4e2e1ec9 3063 /* Setup RFC5077 ticket keys */
aff8c126
RS		 3064 if ((RAND_bytes(ret->ext.tick_key_name,
3065 sizeof(ret->ext.tick_key_name)) <= 0)
3066 || (RAND_bytes(ret->ext.tick_hmac_key,
3067 sizeof(ret->ext.tick_hmac_key)) <= 0)
3068 || (RAND_bytes(ret->ext.tick_aes_key,
3069 sizeof(ret->ext.tick_aes_key)) <= 0))
0f113f3e 3070 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3071
43054d3d
MC		 3072 if (RAND_bytes(ret->ext.cookie_hmac_key,
3073 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3074 goto err;
3075
edc032b5 3076#ifndef OPENSSL_NO_SRP
61986d32 3077 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 3078 goto err;
edc032b5 3079#endif
4db9677b 3080#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3081# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3082# define eng_strx(x) #x
3083# define eng_str(x) eng_strx(x)
3084 /* Use specific client engine automatically... ignore errors */
3085 {
3086 ENGINE *eng;
3087 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3088 if (!eng) {
3089 ERR_clear_error();
3090 ENGINE_load_builtin_engines();
3091 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3092 }
3093 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3094 ERR_clear_error();
3095 }
3096# endif
3097#endif
3098 /*
3099 * Default is to connect to non-RI servers. When RI is more widely
3100 * deployed might change this.
3101 */
3102 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3103 /*
3104 * Disable compression by default to prevent CRIME. Applications can
3105 * re-enable compression by configuring
3106 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3107 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3108 * middlebox compatibility by default. This may be disabled by default in
3109 * a later OpenSSL version.
dc5744cb 3110 */
a5816a5a 3111 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3112
aff8c126 3113 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3114
bfa9a9af 3115 /*
c39e4048
BK		 3116 * We cannot usefully set a default max_early_data here (which gets
3117 * propagated in SSL_new(), for the following reason: setting the
3118 * SSL field causes tls_construct_stoc_early_data() to tell the
3119 * client that early data will be accepted when constructing a TLS 1.3
3120 * session ticket, and the client will accordingly send us early data
3121 * when using that ticket (if the client has early data to send).
3122 * However, in order for the early data to actually be consumed by
3123 * the application, the application must also have calls to
3124 * SSL_read_early_data(); otherwise we'll just skip past the early data
3125 * and ignore it. So, since the application must add calls to
3126 * SSL_read_early_data(), we also require them to add
3127 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3128 * eliminating the bandwidth-wasting early data in the case described
3129 * above.
bfa9a9af 3130 */
c39e4048 3131 ret->max_early_data = 0;
bfa9a9af 3132
16203f7b 3133 return ret;
0f113f3e
MC		 3134 err:
3135 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3136 err2:
e0e920b1 3137 SSL_CTX_free(ret);
16203f7b 3138 return NULL;
0f113f3e 3139}
d02b48c6 3140
c5ebfcab 3141int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3142{
16203f7b 3143 int i;
c5ebfcab 3144
2f545ae4 3145 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3146 return 0;
3147
3148 REF_PRINT_COUNT("SSL_CTX", ctx);
3149 REF_ASSERT_ISNT(i < 2);
3150 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3151}
3152
4f43d0e7 3153void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3154{
3155 int i;
d02b48c6 3156
0f113f3e
MC		 3157 if (a == NULL)
3158 return;
d02b48c6 3159
2f545ae4 3160 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3161 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3162 if (i > 0)
3163 return;
f3f1cf84 3164 REF_ASSERT_ISNT(i < 0);
0f113f3e 3165
222561fe 3166 X509_VERIFY_PARAM_free(a->param);
919ba009 3167 dane_ctx_final(&a->dane);
0f113f3e
MC		 3168
3169 /*
3170 * Free internal session cache. However: the remove_cb() may reference
3171 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3172 * after the sessions were flushed.
3173 * As the ex_data handling routines might also touch the session cache,
3174 * the most secure solution seems to be: empty (flush) the cache, then
3175 * free ex_data, then finally free the cache.
3176 * (See ticket [openssl.org #212].)
3177 */
3178 if (a->sessions != NULL)
3179 SSL_CTX_flush_sessions(a, 0);
3180
3181 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3182 lh_SSL_SESSION_free(a->sessions);
222561fe 3183 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3184#ifndef OPENSSL_NO_CT
3185 CTLOG_STORE_free(a->ctlog_store);
3186#endif
25aaa98a
RS		 3187 sk_SSL_CIPHER_free(a->cipher_list);
3188 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3189 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3190 ssl_cert_free(a->cert);
fa7c2637 3191 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
222561fe 3192 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3193 a->comp_methods = NULL;
e783bae2 3194#ifndef OPENSSL_NO_SRTP
25aaa98a 3195 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3196#endif
edc032b5 3197#ifndef OPENSSL_NO_SRP
0f113f3e 3198 SSL_CTX_SRP_CTX_free(a);
edc032b5 3199#endif
bdfe932d 3200#ifndef OPENSSL_NO_ENGINE
7c96dbcd 3201 ENGINE_finish(a->client_cert_engine);
ddac1974 3202#endif
8671b898 3203
e481f9b9 3204#ifndef OPENSSL_NO_EC
aff8c126
RS		 3205 OPENSSL_free(a->ext.ecpointformats);
3206 OPENSSL_free(a->ext.supportedgroups);
8671b898 3207#endif
aff8c126 3208 OPENSSL_free(a->ext.alpn);
8671b898 3209
16203f7b
AG		 3210 CRYPTO_THREAD_lock_free(a->lock);
3211
0f113f3e
MC		 3212 OPENSSL_free(a);
3213}
d02b48c6 3214
3ae76679 3215void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3216{
3217 ctx->default_passwd_callback = cb;
3218}
3219
3220void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3221{
3222 ctx->default_passwd_callback_userdata = u;
3223}
3224
0c452abc
CH		 3225pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3226{
3227 return ctx->default_passwd_callback;
3228}
3229
3230void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3231{
3232 return ctx->default_passwd_callback_userdata;
3233}
3234
a974e64a
MC		 3235void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3236{
3237 s->default_passwd_callback = cb;
3238}
3239
3240void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3241{
3242 s->default_passwd_callback_userdata = u;
3243}
3244
0c452abc
CH		 3245pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3246{
3247 return s->default_passwd_callback;
3248}
3249
3250void *SSL_get_default_passwd_cb_userdata(SSL *s)
3251{
3252 return s->default_passwd_callback_userdata;
3253}
3254
0f113f3e
MC		 3255void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3256 int (*cb) (X509_STORE_CTX *, void *),
3257 void *arg)
3258{
3259 ctx->app_verify_callback = cb;
3260 ctx->app_verify_arg = arg;
3261}
3262
3263void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3264 int (*cb) (int, X509_STORE_CTX *))
3265{
3266 ctx->verify_mode = mode;
3267 ctx->default_verify_callback = cb;
3268}
3269
3270void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3271{
3272 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3273}
3274
a230b26e 3275void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3276{
3277 ssl_cert_set_cert_cb(c->cert, cb, arg);
3278}
3279
3280void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3281{
3282 ssl_cert_set_cert_cb(s->cert, cb, arg);
3283}
18d71588 3284
2cf28d61 3285void ssl_set_masks(SSL *s)
0f113f3e 3286{
6383d316 3287 CERT *c = s->cert;
f7d53487 3288 uint32_t *pvalid = s->s3->tmp.valid_flags;
bc71f910 3289 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3290 unsigned long mask_k, mask_a;
10bf4fc2 3291#ifndef OPENSSL_NO_EC
361a1191 3292 int have_ecc_cert, ecdsa_ok;
14536c8c 3293#endif
0f113f3e
MC		 3294 if (c == NULL)
3295 return;
d02b48c6 3296
bc36ee62 3297#ifndef OPENSSL_NO_DH
0f113f3e 3298 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3299#else
361a1191 3300 dh_tmp = 0;
d02b48c6
RE		 3301#endif
3302
d0ff28f8 3303 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3304 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3305 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3306#ifndef OPENSSL_NO_EC
6383d316 3307 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3308#endif
0f113f3e
MC		 3309 mask_k = 0;
3310 mask_a = 0;
0e1dba93 3311
d02b48c6 3312#ifdef CIPHER_DEBUG
b7557ccf
AG		 3313 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3314 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e
MC		 3315#endif
3316
2a9b9654 3317#ifndef OPENSSL_NO_GOST
4020c0b3 3318 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3319 mask_k |= SSL_kGOST;
3320 mask_a |= SSL_aGOST12;
3321 }
4020c0b3 3322 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3323 mask_k |= SSL_kGOST;
3324 mask_a |= SSL_aGOST12;
3325 }
4020c0b3 3326 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3327 mask_k |= SSL_kGOST;
3328 mask_a |= SSL_aGOST01;
3329 }
2a9b9654 3330#endif
0f113f3e 3331
361a1191 3332 if (rsa_enc)
0f113f3e 3333 mask_k |= SSL_kRSA;
d02b48c6 3334
0f113f3e
MC		 3335 if (dh_tmp)
3336 mask_k |= SSL_kDHE;
d02b48c6 3337
6aaa29fb
DSH		 3338 /*
3339 * If we only have an RSA-PSS certificate allow RSA authentication
3340 * if TLS 1.2 and peer supports it.
3341 */
3342
3343 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3344 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3345 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3346 mask_a |= SSL_aRSA;
d02b48c6 3347
0f113f3e
MC		 3348 if (dsa_sign) {
3349 mask_a |= SSL_aDSS;
0f113f3e 3350 }
d02b48c6 3351
0f113f3e 3352 mask_a |= SSL_aNULL;
d02b48c6 3353
0f113f3e
MC		 3354 /*
3355 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3356 * depending on the key usage extension.
3357 */
14536c8c 3358#ifndef OPENSSL_NO_EC
0f113f3e 3359 if (have_ecc_cert) {
a8d8e06b 3360 uint32_t ex_kusage;
4020c0b3 3361 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3362 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3363 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3364 ecdsa_ok = 0;
c7c46256 3365 if (ecdsa_ok)
0f113f3e 3366 mask_a |= SSL_aECDSA;
0f113f3e 3367 }
b2021556
DSH		 3368 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3369 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3370 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3371 && TLS1_get_version(s) == TLS1_2_VERSION)
3372 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3373
3374 /* Allow Ed448 for TLS 1.2 if peer supports it */
3375 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3376 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3377 && TLS1_get_version(s) == TLS1_2_VERSION)
3378 mask_a |= SSL_aECDSA;
14536c8c 3379#endif
ea262260 3380
10bf4fc2 3381#ifndef OPENSSL_NO_EC
fe6ef247 3382 mask_k |= SSL_kECDHE;
ea262260 3383#endif
ddac1974
NL		 3384
3385#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3386 mask_k |= SSL_kPSK;
3387 mask_a |= SSL_aPSK;
526f94ad
DSH		 3388 if (mask_k & SSL_kRSA)
3389 mask_k |= SSL_kRSAPSK;
3390 if (mask_k & SSL_kDHE)
3391 mask_k |= SSL_kDHEPSK;
3392 if (mask_k & SSL_kECDHE)
3393 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3394#endif
3395
4d69f9e6
DSH		 3396 s->s3->tmp.mask_k = mask_k;
3397 s->s3->tmp.mask_a = mask_a;
0f113f3e 3398}
d02b48c6 3399
ef236ec3
DSH		 3400#ifndef OPENSSL_NO_EC
3401
a2f9200f 3402int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3403{
ce0c1f2b 3404 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3405 /* key usage, if present, must allow signing */
ce0c1f2b 3406 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3407 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3408 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3409 return 0;
3410 }
3411 }
0f113f3e
MC		 3412 return 1; /* all checks are ok */
3413}
ea262260 3414
ef236ec3
DSH		 3415#endif
3416
a398f821 3417int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3418 size_t *serverinfo_length)
3419{
a497cf25 3420 CERT_PKEY *cpk = s->s3->tmp.cert;
0f113f3e
MC		 3421 *serverinfo_length = 0;
3422
a497cf25 3423 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3424 return 0;
3425
a497cf25
DSH		 3426 *serverinfo = cpk->serverinfo;
3427 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3428 return 1;
3429}
0f113f3e
MC		 3430
3431void ssl_update_cache(SSL *s, int mode)
3432{
3433 int i;
3434
3435 /*
3436 * If the session_id_length is 0, we are not supposed to cache it, and it
3437 * would be rather hard to do anyway :-)
3438 */
3439 if (s->session->session_id_length == 0)
3440 return;
3441
3442 i = s->session_ctx->session_cache_mode;
5d61491c
MC		 3443 if ((i & mode) != 0
3444 && (!s->hit || SSL_IS_TLS13(s))
3445 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
0f113f3e 3446 || SSL_CTX_add_session(s->session_ctx, s->session))
5d61491c 3447 && s->session_ctx->new_session_cb != NULL) {
16203f7b 3448 SSL_SESSION_up_ref(s->session);
0f113f3e
MC		 3449 if (!s->session_ctx->new_session_cb(s, s->session))
3450 SSL_SESSION_free(s->session);
3451 }
3452
3453 /* auto flush every 255 connections */
3454 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
1fcb4e4d
BK		 3455 int *stat, val;
3456 if (mode & SSL_SESS_CACHE_CLIENT)
3457 stat = &s->session_ctx->stats.sess_connect_good;
3458 else
3459 stat = &s->session_ctx->stats.sess_accept_good;
3460 if (CRYPTO_atomic_read(stat, &val, s->session_ctx->lock)
3461 && (val & 0xff) == 0xff)
0f113f3e 3462 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3463 }
3464}
d02b48c6 3465
ba168244 3466const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
0f113f3e
MC		 3467{
3468 return ctx->method;
3469}
ba168244 3470
4ebb342f 3471const SSL_METHOD *SSL_get_ssl_method(SSL *s)
0f113f3e 3472{
26a7d938 3473 return s->method;
0f113f3e 3474}
d02b48c6 3475
4ebb342f 3476int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3477{
0f113f3e
MC		 3478 int ret = 1;
3479
3480 if (s->method != meth) {
919ba009 3481 const SSL_METHOD *sm = s->method;
a230b26e 3482 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3483
919ba009 3484 if (sm->version == meth->version)
0f113f3e
MC		 3485 s->method = meth;
3486 else {
919ba009 3487 sm->ssl_free(s);
0f113f3e
MC		 3488 s->method = meth;
3489 ret = s->method->ssl_new(s);
3490 }
3491
919ba009 3492 if (hf == sm->ssl_connect)
0f113f3e 3493 s->handshake_func = meth->ssl_connect;
919ba009 3494 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3495 s->handshake_func = meth->ssl_accept;
3496 }
26a7d938 3497 return ret;
0f113f3e
MC		 3498}
3499
3500int SSL_get_error(const SSL *s, int i)
3501{
3502 int reason;
3503 unsigned long l;
3504 BIO *bio;
3505
3506 if (i > 0)
26a7d938 3507 return SSL_ERROR_NONE;
0f113f3e
MC		 3508
3509 /*
3510 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3511 * where we do encode the error
3512 */
3513 if ((l = ERR_peek_error()) != 0) {
3514 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3515 return SSL_ERROR_SYSCALL;
0f113f3e 3516 else
26a7d938 3517 return SSL_ERROR_SSL;
0f113f3e
MC		 3518 }
3519
8051ab2b
MC		 3520 if (SSL_want_read(s)) {
3521 bio = SSL_get_rbio(s);
3522 if (BIO_should_read(bio))
26a7d938 3523 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3524 else if (BIO_should_write(bio))
3525 /*
3526 * This one doesn't make too much sense ... We never try to write
3527 * to the rbio, and an application program where rbio and wbio
3528 * are separate couldn't even know what it should wait for.
3529 * However if we ever set s->rwstate incorrectly (so that we have
3530 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3531 * wbio *are* the same, this test works around that bug; so it
3532 * might be safer to keep it.
3533 */
26a7d938 3534 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3535 else if (BIO_should_io_special(bio)) {
3536 reason = BIO_get_retry_reason(bio);
3537 if (reason == BIO_RR_CONNECT)
26a7d938 3538 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3539 else if (reason == BIO_RR_ACCEPT)
26a7d938 3540 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3541 else
26a7d938 3542 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3543 }
8051ab2b 3544 }
0f113f3e 3545
8051ab2b 3546 if (SSL_want_write(s)) {
69687aa8 3547 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3548 bio = s->wbio;
3549 if (BIO_should_write(bio))
26a7d938 3550 return SSL_ERROR_WANT_WRITE;
8051ab2b 3551 else if (BIO_should_read(bio))
2e7dc7cd 3552 /*
8051ab2b 3553 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3554 */
26a7d938 3555 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3556 else if (BIO_should_io_special(bio)) {
3557 reason = BIO_get_retry_reason(bio);
3558 if (reason == BIO_RR_CONNECT)
26a7d938 3559 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3560 else if (reason == BIO_RR_ACCEPT)
26a7d938 3561 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3562 else
26a7d938 3563 return SSL_ERROR_SYSCALL;
0f113f3e 3564 }
07bbc92c 3565 }
6b1bb98f 3566 if (SSL_want_x509_lookup(s))
26a7d938 3567 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3568 if (SSL_want_async(s))
8051ab2b 3569 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3570 if (SSL_want_async_job(s))
8051ab2b 3571 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3572 if (SSL_want_client_hello_cb(s))
3573 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3574
3575 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3576 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3577 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3578
26a7d938 3579 return SSL_ERROR_SYSCALL;
0f113f3e 3580}
d02b48c6 3581
add2f5ca
MC		 3582static int ssl_do_handshake_intern(void *vargs)
3583{
3584 struct ssl_async_args *args;
3585 SSL *s;
3586
3587 args = (struct ssl_async_args *)vargs;
3588 s = args->s;
3589
3590 return s->handshake_func(s);
3591}
3592
4f43d0e7 3593int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3594{
3595 int ret = 1;
3596
3597 if (s->handshake_func == NULL) {
3598 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3599 return -1;
0f113f3e
MC		 3600 }
3601
3eaa4170 3602 ossl_statem_check_finish_init(s, -1);
49e7fe12 3603
c7f47786 3604 s->method->ssl_renegotiate_check(s, 0);
0f113f3e 3605
190b9a03
PY		 3606 if (SSL_is_server(s)) {
3607 /* clear SNI settings at server-side */
3608 OPENSSL_free(s->ext.hostname);
3609 s->ext.hostname = NULL;
3610 }
3611
0f113f3e 3612 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3613 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3614 struct ssl_async_args args;
3615
3616 args.s = s;
3617
7fecbf6f 3618 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3619 } else {
3620 ret = s->handshake_func(s);
3621 }
0f113f3e 3622 }
add2f5ca 3623 return ret;
0f113f3e
MC		 3624}
3625
4f43d0e7 3626void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3627{
3628 s->server = 1;
3629 s->shutdown = 0;
fe3a3291 3630 ossl_statem_clear(s);
0f113f3e 3631 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3632 clear_ciphers(s);
0f113f3e 3633}
d02b48c6 3634
4f43d0e7 3635void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3636{
3637 s->server = 0;
3638 s->shutdown = 0;
fe3a3291 3639 ossl_statem_clear(s);
0f113f3e 3640 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3641 clear_ciphers(s);
0f113f3e 3642}
d02b48c6 3643
4f43d0e7 3644int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3645{
3646 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3647 return 0;
0f113f3e 3648}
d02b48c6 3649
41a15c4f 3650int ssl_undefined_void_function(void)
0f113f3e
MC		 3651{
3652 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3653 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3654 return 0;
0f113f3e 3655}
41a15c4f 3656
0821bcd4 3657int ssl_undefined_const_function(const SSL *s)
0f113f3e 3658{
26a7d938 3659 return 0;
0f113f3e 3660}
0821bcd4 3661
2b8fa1d5 3662const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3663{
3664 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3665 return NULL;
0f113f3e 3666}
d02b48c6 3667
3eb2aff4 3668const char *ssl_protocol_to_string(int version)
7d650072 3669{
2abacef1
MC		 3670 switch(version)
3671 {
3672 case TLS1_3_VERSION:
582a17d6 3673 return "TLSv1.3";
2abacef1
MC		 3674
3675 case TLS1_2_VERSION:
7d650072 3676 return "TLSv1.2";
2abacef1
MC		 3677
3678 case TLS1_1_VERSION:
7d650072 3679 return "TLSv1.1";
2abacef1
MC		 3680
3681 case TLS1_VERSION:
ee3a6c64 3682 return "TLSv1";
2abacef1
MC		 3683
3684 case SSL3_VERSION:
7d650072 3685 return "SSLv3";
2abacef1
MC		 3686
3687 case DTLS1_BAD_VER:
7d650072 3688 return "DTLSv0.9";
2abacef1
MC		 3689
3690 case DTLS1_VERSION:
7d650072 3691 return "DTLSv1";
2abacef1
MC		 3692
3693 case DTLS1_2_VERSION:
7d650072 3694 return "DTLSv1.2";
2abacef1
MC		 3695
3696 default:
3697 return "unknown";
3698 }
0f113f3e 3699}
d02b48c6 3700
7d650072
KR		 3701const char *SSL_get_version(const SSL *s)
3702{
3eb2aff4 3703 return ssl_protocol_to_string(s->version);
7d650072
KR		 3704}
3705
4f43d0e7 3706SSL *SSL_dup(SSL *s)
0f113f3e
MC		 3707{
3708 STACK_OF(X509_NAME) *sk;
3709 X509_NAME *xn;
3710 SSL *ret;
3711 int i;
3712
919ba009
VD		 3713 /* If we're not quiescent, just up_ref! */
3714 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3715 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3716 return s;
3717 }
3718
3719 /*
3720 * Otherwise, copy configuration state, and session if set.
3721 */
0f113f3e 3722 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3723 return NULL;
0f113f3e 3724
0f113f3e 3725 if (s->session != NULL) {
919ba009
VD		 3726 /*
3727 * Arranges to share the same session via up_ref. This "copies"
3728 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3729 */
61986d32 3730 if (!SSL_copy_session_id(ret, s))
17dd65e6 3731 goto err;
0f113f3e
MC		 3732 } else {
3733 /*
3734 * No session has been established yet, so we have to expect that
3735 * s->cert or ret->cert will be changed later -- they should not both
3736 * point to the same object, and thus we can't use
3737 * SSL_copy_session_id.
3738 */
919ba009
VD		 3739 if (!SSL_set_ssl_method(ret, s->method))
3740 goto err;
0f113f3e
MC		 3741
3742 if (s->cert != NULL) {
e0e920b1 3743 ssl_cert_free(ret->cert);
0f113f3e
MC		 3744 ret->cert = ssl_cert_dup(s->cert);
3745 if (ret->cert == NULL)
3746 goto err;
3747 }
3748
348240c6
MC		 3749 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3750 (int)s->sid_ctx_length))
69f68237 3751 goto err;
0f113f3e
MC		 3752 }
3753
9f6b22b8
VD		 3754 if (!ssl_dane_dup(ret, s))
3755 goto err;
919ba009 3756 ret->version = s->version;
0f113f3e
MC		 3757 ret->options = s->options;
3758 ret->mode = s->mode;
3759 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3760 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3761 ret->msg_callback = s->msg_callback;
3762 ret->msg_callback_arg = s->msg_callback_arg;
3763 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3764 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3765 ret->generate_session_id = s->generate_session_id;
3766
3767 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3768
0f113f3e
MC		 3769 /* copy app data, a little dangerous perhaps */
3770 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3771 goto err;
3772
3773 /* setup rbio, and wbio */
3774 if (s->rbio != NULL) {
3775 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3776 goto err;
3777 }
3778 if (s->wbio != NULL) {
3779 if (s->wbio != s->rbio) {
3780 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3781 goto err;
65e2d672
MC		 3782 } else {
3783 BIO_up_ref(ret->rbio);
0f113f3e 3784 ret->wbio = ret->rbio;
65e2d672 3785 }
0f113f3e 3786 }
919ba009 3787
0f113f3e 3788 ret->server = s->server;
919ba009
VD		 3789 if (s->handshake_func) {
3790 if (s->server)
3791 SSL_set_accept_state(ret);
3792 else
3793 SSL_set_connect_state(ret);
3794 }
0f113f3e 3795 ret->shutdown = s->shutdown;
0f113f3e
MC		 3796 ret->hit = s->hit;
3797
a974e64a
MC		 3798 ret->default_passwd_callback = s->default_passwd_callback;
3799 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3800
0f113f3e
MC		 3801 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3802
3803 /* dup the cipher_list and cipher_list_by_id stacks */
3804 if (s->cipher_list != NULL) {
3805 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3806 goto err;
3807 }
3808 if (s->cipher_list_by_id != NULL)
3809 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3810 == NULL)
3811 goto err;
3812
3813 /* Dup the client_CA list */
fa7c2637
DSH		 3814 if (s->ca_names != NULL) {
3815 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
0f113f3e 3816 goto err;
fa7c2637 3817 ret->ca_names = sk;
0f113f3e
MC		 3818 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3819 xn = sk_X509_NAME_value(sk, i);
3820 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3821 X509_NAME_free(xn);
3822 goto err;
3823 }
3824 }
3825 }
66696478 3826 return ret;
0f113f3e 3827
0f113f3e 3828 err:
66696478
RS		 3829 SSL_free(ret);
3830 return NULL;
0f113f3e 3831}
d02b48c6 3832
4f43d0e7 3833void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3834{
3835 if (s->enc_read_ctx != NULL) {
846ec07d 3836 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3837 s->enc_read_ctx = NULL;
3838 }
3839 if (s->enc_write_ctx != NULL) {
846ec07d 3840 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3841 s->enc_write_ctx = NULL;
3842 }
09b6c2ef 3843#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3844 COMP_CTX_free(s->expand);
3845 s->expand = NULL;
3846 COMP_CTX_free(s->compress);
3847 s->compress = NULL;
0f113f3e
MC		 3848#endif
3849}
d02b48c6 3850
0821bcd4 3851X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3852{
3853 if (s->cert != NULL)
26a7d938 3854 return s->cert->key->x509;
0f113f3e 3855 else
26a7d938 3856 return NULL;
0f113f3e 3857}
d02b48c6 3858
a25f9adc 3859EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3860{
3861 if (s->cert != NULL)
26a7d938 3862 return s->cert->key->privatekey;
0f113f3e 3863 else
26a7d938 3864 return NULL;
0f113f3e 3865}
d02b48c6 3866
a25f9adc 3867X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 3868{
3869 if (ctx->cert != NULL)
3870 return ctx->cert->key->x509;
3871 else
3872 return NULL;
3873}
a25f9adc
DSH		 3874
3875EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 3876{
3877 if (ctx->cert != NULL)
3878 return ctx->cert->key->privatekey;
3879 else
3880 return NULL;
3881}
a25f9adc 3882
babb3798 3883const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 3884{
3885 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 3886 return s->session->cipher;
3887 return NULL;
0f113f3e
MC		 3888}
3889
0aed6e44
BK		 3890const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3891{
3892 return s->s3->tmp.new_cipher;
3893}
3894
377dcdba 3895const COMP_METHOD *SSL_get_current_compression(SSL *s)
0f113f3e 3896{
9a555706
RS		 3897#ifndef OPENSSL_NO_COMP
3898 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3899#else
3900 return NULL;
3901#endif
0f113f3e 3902}
377dcdba
RL		 3903
3904const COMP_METHOD *SSL_get_current_expansion(SSL *s)
0f113f3e 3905{
9a555706
RS		 3906#ifndef OPENSSL_NO_COMP
3907 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3908#else
3909 return NULL;
0f113f3e 3910#endif
9a555706 3911}
0f113f3e 3912
46417569 3913int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 3914{
3915 BIO *bbio;
3916
2e7dc7cd
MC		 3917 if (s->bbio != NULL) {
3918 /* Already buffered. */
3919 return 1;
0f113f3e 3920 }
46417569 3921
2e7dc7cd
MC		 3922 bbio = BIO_new(BIO_f_buffer());
3923 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3924 BIO_free(bbio);
0f113f3e 3925 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 3926 return 0;
0f113f3e 3927 }
2e7dc7cd
MC		 3928 s->bbio = bbio;
3929 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 3930
3931 return 1;
0f113f3e 3932}
413c4f45 3933
b77f3ed1 3934int ssl_free_wbio_buffer(SSL *s)
0f113f3e 3935{
62adbcee 3936 /* callers ensure s is never null */
0f113f3e 3937 if (s->bbio == NULL)
b77f3ed1 3938 return 1;
0f113f3e 3939
2e7dc7cd 3940 s->wbio = BIO_pop(s->wbio);
b77f3ed1
MC		 3941 if (!ossl_assert(s->wbio != NULL))
3942 return 0;
0f113f3e
MC		 3943 BIO_free(s->bbio);
3944 s->bbio = NULL;
b77f3ed1
MC		 3945
3946 return 1;
0f113f3e
MC		 3947}
3948
3949void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3950{
3951 ctx->quiet_shutdown = mode;
3952}
58964a49 3953
0821bcd4 3954int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 3955{
26a7d938 3956 return ctx->quiet_shutdown;
0f113f3e 3957}
58964a49 3958
0f113f3e
MC		 3959void SSL_set_quiet_shutdown(SSL *s, int mode)
3960{
3961 s->quiet_shutdown = mode;
3962}
58964a49 3963
0821bcd4 3964int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 3965{
26a7d938 3966 return s->quiet_shutdown;
0f113f3e 3967}
58964a49 3968
0f113f3e
MC		 3969void SSL_set_shutdown(SSL *s, int mode)
3970{
3971 s->shutdown = mode;
3972}
58964a49 3973
0821bcd4 3974int SSL_get_shutdown(const SSL *s)
0f113f3e 3975{
6546e9b2 3976 return s->shutdown;
0f113f3e 3977}
58964a49 3978
0821bcd4 3979int SSL_version(const SSL *s)
0f113f3e 3980{
6546e9b2
AG		 3981 return s->version;
3982}
3983
3984int SSL_client_version(const SSL *s)
3985{
3986 return s->client_version;
0f113f3e 3987}
58964a49 3988
0821bcd4 3989SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 3990{
6546e9b2 3991 return ssl->ctx;
0f113f3e
MC		 3992}
3993
3994SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3995{
24a0d393 3996 CERT *new_cert;
0f113f3e
MC		 3997 if (ssl->ctx == ctx)
3998 return ssl->ctx;
0f113f3e 3999 if (ctx == NULL)
222da979 4000 ctx = ssl->session_ctx;
24a0d393
KR		 4001 new_cert = ssl_cert_dup(ctx->cert);
4002 if (new_cert == NULL) {
4003 return NULL;
0f113f3e 4004 }
21181889
MC		 4005
4006 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4007 ssl_cert_free(new_cert);
4008 return NULL;
4009 }
4010
24a0d393
KR		 4011 ssl_cert_free(ssl->cert);
4012 ssl->cert = new_cert;
0f113f3e
MC		 4013
4014 /*
4015 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4016 * so setter APIs must prevent invalid lengths from entering the system.
4017 */
380a522f
MC		 4018 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4019 return NULL;
0f113f3e
MC		 4020
4021 /*
4022 * If the session ID context matches that of the parent SSL_CTX,
4023 * inherit it from the new SSL_CTX as well. If however the context does
4024 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4025 * leave it unchanged.
4026 */
4027 if ((ssl->ctx != NULL) &&
4028 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4029 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4030 ssl->sid_ctx_length = ctx->sid_ctx_length;
4031 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4032 }
4033
16203f7b 4034 SSL_CTX_up_ref(ctx);
a230b26e 4035 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4036 ssl->ctx = ctx;
4037
16203f7b 4038 return ssl->ctx;
0f113f3e 4039}
ed3883d2 4040
4f43d0e7 4041int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4042{
26a7d938 4043 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 4044}
58964a49 4045
d84a7b20
MC		 4046int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4047{
4048 X509_LOOKUP *lookup;
4049
4050 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4051 if (lookup == NULL)
4052 return 0;
4053 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4054
4055 /* Clear any errors if the default directory does not exist */
4056 ERR_clear_error();
4057
4058 return 1;
4059}
4060
4061int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4062{
4063 X509_LOOKUP *lookup;
4064
4065 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4066 if (lookup == NULL)
4067 return 0;
4068
4069 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4070
4071 /* Clear any errors if the default file does not exist */
4072 ERR_clear_error();
4073
4074 return 1;
4075}
4076
303c0028 4077int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4078 const char *CApath)
4079{
26a7d938 4080 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
0f113f3e 4081}
58964a49 4082
45d87a1f 4083void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4084 void (*cb) (const SSL *ssl, int type, int val))
4085{
4086 ssl->info_callback = cb;
4087}
4088
4089/*
4090 * One compiler (Diab DCC) doesn't like argument names in returned function
4091 * pointer.
4092 */
4093void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4094 int /* type */ ,
4095 int /* val */ ) {
4096 return ssl->info_callback;
4097}
58964a49 4098
0f113f3e
MC		 4099void SSL_set_verify_result(SSL *ssl, long arg)
4100{
4101 ssl->verify_result = arg;
4102}
58964a49 4103
0821bcd4 4104long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4105{
26a7d938 4106 return ssl->verify_result;
0f113f3e
MC		 4107}
4108
d9f1c639 4109size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4110{
6b8f5d0d 4111 if (outlen == 0)
858618e7
NM		 4112 return sizeof(ssl->s3->client_random);
4113 if (outlen > sizeof(ssl->s3->client_random))
4114 outlen = sizeof(ssl->s3->client_random);
4115 memcpy(out, ssl->s3->client_random, outlen);
d9f1c639 4116 return outlen;
858618e7
NM		 4117}
4118
d9f1c639 4119size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4120{
6b8f5d0d 4121 if (outlen == 0)
858618e7
NM		 4122 return sizeof(ssl->s3->server_random);
4123 if (outlen > sizeof(ssl->s3->server_random))
4124 outlen = sizeof(ssl->s3->server_random);
4125 memcpy(out, ssl->s3->server_random, outlen);
d9f1c639 4126 return outlen;
858618e7
NM		 4127}
4128
d9f1c639 4129size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4130 unsigned char *out, size_t outlen)
858618e7 4131{
d9f1c639
MC		 4132 if (outlen == 0)
4133 return session->master_key_length;
8c1a5343 4134 if (outlen > session->master_key_length)
858618e7
NM		 4135 outlen = session->master_key_length;
4136 memcpy(out, session->master_key, outlen);
d9f1c639 4137 return outlen;
858618e7
NM		 4138}
4139
725b0f1e 4140int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4141 size_t len)
4142{
4143 if (len > sizeof(sess->master_key))
4144 return 0;
4145
4146 memcpy(sess->master_key, in, len);
4147 sess->master_key_length = len;
911d63f2
MC		 4148 return 1;
4149}
4150
4151
0f113f3e
MC		 4152int SSL_set_ex_data(SSL *s, int idx, void *arg)
4153{
26a7d938 4154 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4155}
4156
4157void *SSL_get_ex_data(const SSL *s, int idx)
4158{
26a7d938 4159 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4160}
4161
0f113f3e
MC		 4162int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4163{
26a7d938 4164 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4165}
4166
4167void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4168{
26a7d938 4169 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4170}
58964a49 4171
0821bcd4 4172X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4173{
26a7d938 4174 return ctx->cert_store;
0f113f3e 4175}
413c4f45 4176
0f113f3e
MC		 4177void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4178{
222561fe 4179 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4180 ctx->cert_store = store;
4181}
413c4f45 4182
b50052db
TS		 4183void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4184{
4185 if (store != NULL)
4186 X509_STORE_up_ref(store);
4187 SSL_CTX_set_cert_store(ctx, store);
4188}
4189
0821bcd4 4190int SSL_want(const SSL *s)
0f113f3e 4191{
26a7d938 4192 return s->rwstate;
0f113f3e 4193}
413c4f45 4194
0f113f3e 4195/**
4f43d0e7
BL		 4196 * \brief Set the callback for generating temporary DH keys.
4197 * \param ctx the SSL context.
4198 * \param dh the callback
4199 */
4200
bc36ee62 4201#ifndef OPENSSL_NO_DH
0f113f3e
MC		 4202void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4203 DH *(*dh) (SSL *ssl, int is_export,
4204 int keylength))
4205{
4206 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4207}
f8c3c05d 4208
0f113f3e
MC		 4209void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4210 int keylength))
4211{
4212 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4213}
79df9d62 4214#endif
15d21c2d 4215
ddac1974
NL		 4216#ifndef OPENSSL_NO_PSK
4217int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4218{
4219 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 4220 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4221 return 0;
4222 }
df6da24b 4223 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4224 if (identity_hint != NULL) {
7644a9ae 4225 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4226 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4227 return 0;
4228 } else
df6da24b 4229 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4230 return 1;
4231}
ddac1974
NL		 4232
4233int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4234{
4235 if (s == NULL)
4236 return 0;
4237
0f113f3e
MC		 4238 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4239 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4240 return 0;
4241 }
df6da24b 4242 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4243 if (identity_hint != NULL) {
7644a9ae 4244 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4245 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4246 return 0;
4247 } else
df6da24b 4248 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4249 return 1;
4250}
ddac1974
NL		 4251
4252const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4253{
4254 if (s == NULL || s->session == NULL)
4255 return NULL;
26a7d938 4256 return s->session->psk_identity_hint;
0f113f3e 4257}
ddac1974
NL		 4258
4259const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4260{
4261 if (s == NULL || s->session == NULL)
4262 return NULL;
26a7d938 4263 return s->session->psk_identity;
0f113f3e 4264}
7806f3dd 4265
8cbfcc70 4266void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4267{
4268 s->psk_client_callback = cb;
4269}
7806f3dd 4270
8cbfcc70 4271void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4272{
4273 ctx->psk_client_callback = cb;
4274}
7806f3dd 4275
8cbfcc70 4276void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4277{
4278 s->psk_server_callback = cb;
4279}
7806f3dd 4280
8cbfcc70 4281void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4282{
4283 ctx->psk_server_callback = cb;
4284}
4285#endif
4286
f46184bd
MC		 4287void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4288{
4289 s->psk_find_session_cb = cb;
4290}
4291
4292void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4293 SSL_psk_find_session_cb_func cb)
4294{
4295 ctx->psk_find_session_cb = cb;
4296}
4297
4298void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4299{
4300 s->psk_use_session_cb = cb;
4301}
4302
4303void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4304 SSL_psk_use_session_cb_func cb)
4305{
4306 ctx->psk_use_session_cb = cb;
4307}
4308
0f113f3e
MC		 4309void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4310 void (*cb) (int write_p, int version,
4311 int content_type, const void *buf,
4312 size_t len, SSL *ssl, void *arg))
4313{
4314 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4315}
4316
4317void SSL_set_msg_callback(SSL *ssl,
4318 void (*cb) (int write_p, int version,
4319 int content_type, const void *buf,
4320 size_t len, SSL *ssl, void *arg))
4321{
4322 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4323}
a661b653 4324
7c2d4fee 4325void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4326 int (*cb) (SSL *ssl,
4327 int
4328 is_forward_secure))
4329{
4330 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4331 (void (*)(void))cb);
4332}
4333
7c2d4fee 4334void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4335 int (*cb) (SSL *ssl,
4336 int is_forward_secure))
4337{
4338 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4339 (void (*)(void))cb);
4340}
4341
c649d10d
TS		 4342void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4343 size_t (*cb) (SSL *ssl, int type,
4344 size_t len, void *arg))
4345{
4346 ctx->record_padding_cb = cb;
4347}
4348
4349void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4350{
4351 ctx->record_padding_arg = arg;
4352}
4353
4354void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4355{
4356 return ctx->record_padding_arg;
4357}
4358
4359int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4360{
4361 /* block size of 0 or 1 is basically no padding */
4362 if (block_size == 1)
4363 ctx->block_padding = 0;
4364 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4365 ctx->block_padding = block_size;
4366 else
4367 return 0;
4368 return 1;
4369}
4370
4371void SSL_set_record_padding_callback(SSL *ssl,
4372 size_t (*cb) (SSL *ssl, int type,
4373 size_t len, void *arg))
4374{
4375 ssl->record_padding_cb = cb;
4376}
4377
4378void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4379{
4380 ssl->record_padding_arg = arg;
4381}
4382
4383void *SSL_get_record_padding_callback_arg(SSL *ssl)
4384{
4385 return ssl->record_padding_arg;
4386}
4387
4388int SSL_set_block_padding(SSL *ssl, size_t block_size)
4389{
4390 /* block size of 0 or 1 is basically no padding */
4391 if (block_size == 1)
4392 ssl->block_padding = 0;
4393 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4394 ssl->block_padding = block_size;
4395 else
4396 return 0;
4397 return 1;
4398}
4399
0f113f3e
MC		 4400/*
4401 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4402 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4403 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4404 * Returns the newly allocated ctx;
8671b898 4405 */
b948e2c5 4406
0f113f3e 4407EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4408{
0f113f3e 4409 ssl_clear_hash_ctx(hash);
bfb0641f 4410 *hash = EVP_MD_CTX_new();
5f3d93e4 4411 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4412 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4413 *hash = NULL;
4414 return NULL;
4415 }
0f113f3e 4416 return *hash;
b948e2c5 4417}
0f113f3e
MC		 4418
4419void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4420{
4421
0d9824c1 4422 EVP_MD_CTX_free(*hash);
0f113f3e 4423 *hash = NULL;
b948e2c5 4424}
a661b653 4425
48fbcbac 4426/* Retrieve handshake hashes */
8c1a5343
MC		 4427int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4428 size_t *hashlen)
48fbcbac 4429{
6e59a892 4430 EVP_MD_CTX *ctx = NULL;
28ba2541 4431 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
8c1a5343
MC		 4432 int hashleni = EVP_MD_CTX_size(hdgst);
4433 int ret = 0;
4434
f63a17d6
MC		 4435 if (hashleni < 0 || (size_t)hashleni > outlen) {
4436 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4437 ERR_R_INTERNAL_ERROR);
28ba2541 4438 goto err;
f63a17d6 4439 }
8c1a5343 4440
bfb0641f 4441 ctx = EVP_MD_CTX_new();
8c1a5343 4442 if (ctx == NULL)
6e59a892 4443 goto err;
8c1a5343 4444
6e59a892 4445 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4446 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4447 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4448 ERR_R_INTERNAL_ERROR);
8c1a5343 4449 goto err;
f63a17d6 4450 }
8c1a5343
MC		 4451
4452 *hashlen = hashleni;
4453
4454 ret = 1;
48fbcbac 4455 err:
bfb0641f 4456 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4457 return ret;
4458}
4459
b577fd0b 4460int SSL_session_reused(SSL *s)
0f113f3e
MC		 4461{
4462 return s->hit;
4463}
08557cf2 4464
69443116 4465int SSL_is_server(const SSL *s)
0f113f3e
MC		 4466{
4467 return s->server;
4468}
87adf1fa 4469
47153c72
RS		 4470#if OPENSSL_API_COMPAT < 0x10100000L
4471void SSL_set_debug(SSL *s, int debug)
4472{
4473 /* Old function was do-nothing anyway... */
4474 (void)s;
4475 (void)debug;
4476}
4477#endif
4478
b362ccab 4479void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4480{
4481 s->cert->sec_level = level;
4482}
b362ccab
DSH		 4483
4484int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4485{
4486 return s->cert->sec_level;
4487}
b362ccab 4488
0f113f3e 4489void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4490 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4491 int op, int bits, int nid,
4492 void *other, void *ex))
0f113f3e
MC		 4493{
4494 s->cert->sec_cb = cb;
4495}
b362ccab 4496
a230b26e
EK		 4497int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4498 const SSL_CTX *ctx, int op,
4499 int bits, int nid, void *other,
4500 void *ex) {
0f113f3e
MC		 4501 return s->cert->sec_cb;
4502}
b362ccab
DSH		 4503
4504void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4505{
4506 s->cert->sec_ex = ex;
4507}
b362ccab
DSH		 4508
4509void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4510{
4511 return s->cert->sec_ex;
4512}
b362ccab
DSH		 4513
4514void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4515{
4516 ctx->cert->sec_level = level;
4517}
b362ccab
DSH		 4518
4519int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4520{
4521 return ctx->cert->sec_level;
4522}
b362ccab 4523
0f113f3e 4524void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4525 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4526 int op, int bits, int nid,
4527 void *other, void *ex))
0f113f3e
MC		 4528{
4529 ctx->cert->sec_cb = cb;
4530}
b362ccab 4531
e4646a89
KR		 4532int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4533 const SSL_CTX *ctx,
0f113f3e
MC		 4534 int op, int bits,
4535 int nid,
4536 void *other,
4537 void *ex) {
4538 return ctx->cert->sec_cb;
4539}
b362ccab
DSH		 4540
4541void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4542{
4543 ctx->cert->sec_ex = ex;
4544}
b362ccab
DSH		 4545
4546void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4547{
4548 return ctx->cert->sec_ex;
4549}
b362ccab 4550
8106cb8b
VD		 4551/*
4552 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4553 * can return unsigned long, instead of the generic long return value from the
4554 * control interface.
4555 */
4556unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4557{
4558 return ctx->options;
4559}
a230b26e
EK		 4560
4561unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4562{
4563 return s->options;
4564}
a230b26e 4565
8106cb8b
VD		 4566unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4567{
4568 return ctx->options |= op;
4569}
a230b26e 4570
8106cb8b
VD		 4571unsigned long SSL_set_options(SSL *s, unsigned long op)
4572{
4573 return s->options |= op;
4574}
a230b26e 4575
8106cb8b
VD		 4576unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4577{
4578 return ctx->options &= ~op;
4579}
a230b26e 4580
8106cb8b
VD		 4581unsigned long SSL_clear_options(SSL *s, unsigned long op)
4582{
4583 return s->options &= ~op;
4584}
4585
696178ed
DSH		 4586STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4587{
4588 return s->verified_chain;
4589}
4590
0f113f3e 4591IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4592
4593#ifndef OPENSSL_NO_CT
4594
4595/*
4596 * Moves SCTs from the |src| stack to the |dst| stack.
4597 * The source of each SCT will be set to |origin|.
4598 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4599 * the caller.
4600 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4601 */
a230b26e
EK		 4602static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4603 sct_source_t origin)
ed29e82a
RP		 4604{
4605 int scts_moved = 0;
4606 SCT *sct = NULL;
4607
4608 if (*dst == NULL) {
4609 *dst = sk_SCT_new_null();
4610 if (*dst == NULL) {
4611 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4612 goto err;
4613 }
4614 }
4615
4616 while ((sct = sk_SCT_pop(src)) != NULL) {
4617 if (SCT_set_source(sct, origin) != 1)
4618 goto err;
4619
4620 if (sk_SCT_push(*dst, sct) <= 0)
4621 goto err;
4622 scts_moved += 1;
4623 }
4624
4625 return scts_moved;
a230b26e 4626 err:
ed29e82a 4627 if (sct != NULL)
a230b26e 4628 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4629 return -1;
ed29e82a
RP		 4630}
4631
4632/*
a230b26e 4633 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4634 * Returns the number of SCTs extracted.
a230b26e 4635 */
ed29e82a
RP		 4636static int ct_extract_tls_extension_scts(SSL *s)
4637{
4638 int scts_extracted = 0;
4639
aff8c126
RS		 4640 if (s->ext.scts != NULL) {
4641 const unsigned char *p = s->ext.scts;
4642 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4643
4644 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4645
4646 SCT_LIST_free(scts);
4647 }
4648
4649 return scts_extracted;
4650}
4651
4652/*
4653 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4654 * contains an SCT X509 extension. They will be stored in |s->scts|.
4655 * Returns:
4656 * - The number of SCTs extracted, assuming an OCSP response exists.
4657 * - 0 if no OCSP response exists or it contains no SCTs.
4658 * - A negative integer if an error occurs.
4659 */
4660static int ct_extract_ocsp_response_scts(SSL *s)
4661{
a230b26e 4662# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4663 int scts_extracted = 0;
4664 const unsigned char *p;
4665 OCSP_BASICRESP *br = NULL;
4666 OCSP_RESPONSE *rsp = NULL;
4667 STACK_OF(SCT) *scts = NULL;
4668 int i;
4669
aff8c126 4670 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4671 goto err;
4672
aff8c126
RS		 4673 p = s->ext.ocsp.resp;
4674 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4675 if (rsp == NULL)
4676 goto err;
4677
4678 br = OCSP_response_get1_basic(rsp);
4679 if (br == NULL)
4680 goto err;
4681
4682 for (i = 0; i < OCSP_resp_count(br); ++i) {
4683 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4684
4685 if (single == NULL)
4686 continue;
4687
a230b26e
EK		 4688 scts =
4689 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4690 scts_extracted =
4691 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4692 if (scts_extracted < 0)
4693 goto err;
4694 }
a230b26e 4695 err:
ed29e82a
RP		 4696 SCT_LIST_free(scts);
4697 OCSP_BASICRESP_free(br);
4698 OCSP_RESPONSE_free(rsp);
4699 return scts_extracted;
a230b26e 4700# else
3e41ac35
MC		 4701 /* Behave as if no OCSP response exists */
4702 return 0;
a230b26e 4703# endif
ed29e82a
RP		 4704}
4705
4706/*
4707 * Attempts to extract SCTs from the peer certificate.
4708 * Return the number of SCTs extracted, or a negative integer if an error
4709 * occurs.
4710 */
4711static int ct_extract_x509v3_extension_scts(SSL *s)
4712{
4713 int scts_extracted = 0;
3f3c7d26 4714 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4715
4716 if (cert != NULL) {
4717 STACK_OF(SCT) *scts =
4718 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4719
4720 scts_extracted =
4721 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4722
4723 SCT_LIST_free(scts);
4724 }
4725
4726 return scts_extracted;
4727}
4728
4729/*
4730 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4731 * response (if it exists) and X509v3 extensions in the certificate.
4732 * Returns NULL if an error occurs.
4733 */
4734const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4735{
4736 if (!s->scts_parsed) {
4737 if (ct_extract_tls_extension_scts(s) < 0 ||
4738 ct_extract_ocsp_response_scts(s) < 0 ||
4739 ct_extract_x509v3_extension_scts(s) < 0)
4740 goto err;
4741
4742 s->scts_parsed = 1;
4743 }
4744 return s->scts;
a230b26e 4745 err:
ed29e82a
RP		 4746 return NULL;
4747}
4748
a230b26e 4749static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4750 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4751{
43341433
VD		 4752 return 1;
4753}
4754
a230b26e 4755static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4756 const STACK_OF(SCT) *scts, void *unused_arg)
4757{
4758 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4759 int i;
ed29e82a 4760
43341433
VD		 4761 for (i = 0; i < count; ++i) {
4762 SCT *sct = sk_SCT_value(scts, i);
4763 int status = SCT_get_validation_status(sct);
4764
4765 if (status == SCT_VALIDATION_STATUS_VALID)
4766 return 1;
4767 }
4768 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4769 return 0;
4770}
4771
4772int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4773 void *arg)
4774{
ed29e82a
RP		 4775 /*
4776 * Since code exists that uses the custom extension handler for CT, look
4777 * for this and throw an error if they have already registered to use CT.
4778 */
4779 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4780 TLSEXT_TYPE_signed_certificate_timestamp))
4781 {
ed29e82a
RP		 4782 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4783 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4784 return 0;
ed29e82a
RP		 4785 }
4786
ed29e82a 4787 if (callback != NULL) {
a230b26e
EK		 4788 /*
4789 * If we are validating CT, then we MUST accept SCTs served via OCSP
4790 */
ed29e82a 4791 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4792 return 0;
ed29e82a
RP		 4793 }
4794
43341433
VD		 4795 s->ct_validation_callback = callback;
4796 s->ct_validation_callback_arg = arg;
4797
4798 return 1;
ed29e82a
RP		 4799}
4800
43341433 4801int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 4802 ssl_ct_validation_cb callback, void *arg)
ed29e82a 4803{
ed29e82a
RP		 4804 /*
4805 * Since code exists that uses the custom extension handler for CT, look for
4806 * this and throw an error if they have already registered to use CT.
4807 */
4808 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 4809 TLSEXT_TYPE_signed_certificate_timestamp))
4810 {
ed29e82a
RP		 4811 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4812 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4813 return 0;
ed29e82a
RP		 4814 }
4815
4816 ctx->ct_validation_callback = callback;
4817 ctx->ct_validation_callback_arg = arg;
43341433 4818 return 1;
ed29e82a
RP		 4819}
4820
43341433 4821int SSL_ct_is_enabled(const SSL *s)
ed29e82a 4822{
43341433 4823 return s->ct_validation_callback != NULL;
ed29e82a
RP		 4824}
4825
43341433 4826int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 4827{
43341433 4828 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 4829}
4830
4d482ee2 4831int ssl_validate_ct(SSL *s)
ed29e82a
RP		 4832{
4833 int ret = 0;
3f3c7d26 4834 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 4835 X509 *issuer;
b9aec69a 4836 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 4837 CT_POLICY_EVAL_CTX *ctx = NULL;
4838 const STACK_OF(SCT) *scts;
4839
43341433
VD		 4840 /*
4841 * If no callback is set, the peer is anonymous, or its chain is invalid,
4842 * skip SCT validation - just return success. Applications that continue
4843 * handshakes without certificates, with unverified chains, or pinned leaf
4844 * certificates are outside the scope of the WebPKI and CT.
4845 *
4846 * The above exclusions notwithstanding the vast majority of peers will
4847 * have rather ordinary certificate chains validated by typical
4848 * applications that perform certificate verification and therefore will
4849 * process SCTs when enabled.
4850 */
4851 if (s->ct_validation_callback == NULL || cert == NULL ||
4852 s->verify_result != X509_V_OK ||
a230b26e 4853 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 4854 return 1;
4855
43341433
VD		 4856 /*
4857 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4858 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4859 */
4860 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4861 switch (dane->mtlsa->usage) {
4862 case DANETLS_USAGE_DANE_TA:
4863 case DANETLS_USAGE_DANE_EE:
4864 return 1;
4865 }
ed29e82a
RP		 4866 }
4867
ed29e82a
RP		 4868 ctx = CT_POLICY_EVAL_CTX_new();
4869 if (ctx == NULL) {
f63a17d6
MC		 4870 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
4871 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 4872 goto end;
4873 }
4874
43341433 4875 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 4876 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4877 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4878 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 4879 CT_POLICY_EVAL_CTX_set_time(
4880 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 4881
4882 scts = SSL_get0_peer_scts(s);
4883
43341433
VD		 4884 /*
4885 * This function returns success (> 0) only when all the SCTs are valid, 0
4886 * when some are invalid, and < 0 on various internal errors (out of
4887 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4888 * reason to abort the handshake, that decision is up to the callback.
4889 * Therefore, we error out only in the unexpected case that the return
4890 * value is negative.
4891 *
4892 * XXX: One might well argue that the return value of this function is an
f430ba31 4893 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 4894 * status of each of the provided SCTs. So long as it correctly separates
4895 * the wheat from the chaff it should return success. Failure in this case
4896 * ought to correspond to an inability to carry out its duties.
4897 */
4898 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 4899 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4900 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 4901 goto end;
4902 }
4903
4904 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4905 if (ret < 0)
a230b26e 4906 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 4907 if (!ret)
4908 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4909 SSL_R_CALLBACK_FAILED);
ed29e82a 4910
a230b26e 4911 end:
ed29e82a 4912 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 4913 /*
4914 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4915 * failure return code here. Also the application may wish the complete
4916 * the handshake, and then disconnect cleanly at a higher layer, after
4917 * checking the verification status of the completed connection.
4918 *
4919 * We therefore force a certificate verification failure which will be
4920 * visible via SSL_get_verify_result() and cached as part of any resumed
4921 * session.
4922 *
4923 * Note: the permissive callback is for information gathering only, always
4924 * returns success, and does not affect verification status. Only the
4925 * strict callback or a custom application-specified callback can trigger
4926 * connection failure or record a verification error.
4927 */
4928 if (ret <= 0)
4929 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 4930 return ret;
4931}
4932
43341433
VD		 4933int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4934{
4935 switch (validation_mode) {
4936 default:
4937 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4938 return 0;
4939 case SSL_CT_VALIDATION_PERMISSIVE:
4940 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4941 case SSL_CT_VALIDATION_STRICT:
4942 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4943 }
4944}
4945
4946int SSL_enable_ct(SSL *s, int validation_mode)
4947{
4948 switch (validation_mode) {
4949 default:
4950 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4951 return 0;
4952 case SSL_CT_VALIDATION_PERMISSIVE:
4953 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4954 case SSL_CT_VALIDATION_STRICT:
4955 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4956 }
4957}
4958
ed29e82a
RP		 4959int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4960{
328f36c5 4961 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 4962}
4963
4964int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4965{
4966 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4967}
4968
a230b26e 4969void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 4970{
4971 CTLOG_STORE_free(ctx->ctlog_store);
4972 ctx->ctlog_store = logs;
4973}
4974
4975const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4976{
4977 return ctx->ctlog_store;
4978}
4979
6b1bb98f
BK		 4980#endif /* OPENSSL_NO_CT */
4981
a9c0d8be
DB		 4982void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4983 void *arg)
6b1bb98f 4984{
a9c0d8be
DB		 4985 c->client_hello_cb = cb;
4986 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 4987}
4988
a9c0d8be 4989int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 4990{
4991 if (s->clienthello == NULL)
4992 return 0;
4993 return s->clienthello->isv2;
4994}
4995
a9c0d8be 4996unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 4997{
4998 if (s->clienthello == NULL)
4999 return 0;
5000 return s->clienthello->legacy_version;
5001}
5002
a9c0d8be 5003size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5004{
5005 if (s->clienthello == NULL)
5006 return 0;
5007 if (out != NULL)
5008 *out = s->clienthello->random;
5009 return SSL3_RANDOM_SIZE;
5010}
5011
a9c0d8be 5012size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5013{
5014 if (s->clienthello == NULL)
5015 return 0;
5016 if (out != NULL)
5017 *out = s->clienthello->session_id;
5018 return s->clienthello->session_id_len;
5019}
5020
a9c0d8be 5021size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5022{
5023 if (s->clienthello == NULL)
5024 return 0;
5025 if (out != NULL)
5026 *out = PACKET_data(&s->clienthello->ciphersuites);
5027 return PACKET_remaining(&s->clienthello->ciphersuites);
5028}
5029
a9c0d8be 5030size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5031{
5032 if (s->clienthello == NULL)
5033 return 0;
5034 if (out != NULL)
5035 *out = s->clienthello->compressions;
5036 return s->clienthello->compressions_len;
5037}
5038
a9c0d8be 5039int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5040{
5041 RAW_EXTENSION *ext;
5042 int *present;
5043 size_t num = 0, i;
5044
5045 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5046 return 0;
5047 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5048 ext = s->clienthello->pre_proc_exts + i;
5049 if (ext->present)
5050 num++;
5051 }
5052 present = OPENSSL_malloc(sizeof(*present) * num);
5053 if (present == NULL)
5054 return 0;
5055 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5056 ext = s->clienthello->pre_proc_exts + i;
5057 if (ext->present) {
5058 if (ext->received_order >= num)
5059 goto err;
5060 present[ext->received_order] = ext->type;
5061 }
5062 }
5063 *out = present;
5064 *outlen = num;
5065 return 1;
5066 err:
5067 OPENSSL_free(present);
5068 return 0;
5069}
5070
a9c0d8be 5071int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5072 size_t *outlen)
5073{
5074 size_t i;
5075 RAW_EXTENSION *r;
5076
5077 if (s->clienthello == NULL)
5078 return 0;
5079 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5080 r = s->clienthello->pre_proc_exts + i;
5081 if (r->present && r->type == type) {
5082 if (out != NULL)
5083 *out = PACKET_data(&r->data);
5084 if (outlen != NULL)
5085 *outlen = PACKET_remaining(&r->data);
5086 return 1;
5087 }
5088 }
5089 return 0;
5090}
2faa1b48 5091
a58eb06d
TS		 5092int SSL_free_buffers(SSL *ssl)
5093{
5094 RECORD_LAYER *rl = &ssl->rlayer;
5095
5096 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5097 return 0;
5098
5099 RECORD_LAYER_release(rl);
5100 return 1;
5101}
5102
5103int SSL_alloc_buffers(SSL *ssl)
5104{
5105 return ssl3_setup_buffers(ssl);
5106}
5107
2faa1b48
CB		 5108void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5109{
5110 ctx->keylog_callback = cb;
5111}
5112
5113SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5114{
5115 return ctx->keylog_callback;
5116}
5117
5118static int nss_keylog_int(const char *prefix,
5119 SSL *ssl,
5120 const uint8_t *parameter_1,
5121 size_t parameter_1_len,
5122 const uint8_t *parameter_2,
5123 size_t parameter_2_len)
5124{
5125 char *out = NULL;
5126 char *cursor = NULL;
5127 size_t out_len = 0;
5128 size_t i;
5129 size_t prefix_len;
5130
5131 if (ssl->ctx->keylog_callback == NULL) return 1;
5132
5133 /*
5134 * Our output buffer will contain the following strings, rendered with
5135 * space characters in between, terminated by a NULL character: first the
5136 * prefix, then the first parameter, then the second parameter. The
5137 * meaning of each parameter depends on the specific key material being
5138 * logged. Note that the first and second parameters are encoded in
5139 * hexadecimal, so we need a buffer that is twice their lengths.
5140 */
5141 prefix_len = strlen(prefix);
5142 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
5143 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 5144 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5145 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5146 return 0;
5147 }
5148
5149 strcpy(cursor, prefix);
5150 cursor += prefix_len;
5151 *cursor++ = ' ';
5152
5153 for (i = 0; i < parameter_1_len; i++) {
5154 sprintf(cursor, "%02x", parameter_1[i]);
5155 cursor += 2;
5156 }
5157 *cursor++ = ' ';
5158
5159 for (i = 0; i < parameter_2_len; i++) {
5160 sprintf(cursor, "%02x", parameter_2[i]);
5161 cursor += 2;
5162 }
5163 *cursor = '\0';
5164
5165 ssl->ctx->keylog_callback(ssl, (const char *)out);
5166 OPENSSL_free(out);
5167 return 1;
5168
5169}
5170
5171int ssl_log_rsa_client_key_exchange(SSL *ssl,
5172 const uint8_t *encrypted_premaster,
5173 size_t encrypted_premaster_len,
5174 const uint8_t *premaster,
5175 size_t premaster_len)
5176{
5177 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 5178 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5179 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5180 return 0;
5181 }
5182
f0deb4d3 5183 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5184 return nss_keylog_int("RSA",
5185 ssl,
5186 encrypted_premaster,
f0deb4d3 5187 8,
2faa1b48
CB		 5188 premaster,
5189 premaster_len);
5190}
5191
2c7bd692
CB		 5192int ssl_log_secret(SSL *ssl,
5193 const char *label,
5194 const uint8_t *secret,
5195 size_t secret_len)
2faa1b48 5196{
2c7bd692 5197 return nss_keylog_int(label,
2faa1b48 5198 ssl,
2c7bd692
CB		 5199 ssl->s3->client_random,
5200 SSL3_RANDOM_SIZE,
5201 secret,
5202 secret_len);
2faa1b48
CB		 5203}
5204
ccb8e6e0
BK		 5205#define SSLV2_CIPHER_LEN 3
5206
f63a17d6 5207int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5208{
ccb8e6e0 5209 int n;
ccb8e6e0
BK		 5210
5211 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5212
5213 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5214 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5215 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5216 return 0;
ccb8e6e0
BK		 5217 }
5218
5219 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5220 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 5221 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5222 return 0;
ccb8e6e0
BK		 5223 }
5224
5225 OPENSSL_free(s->s3->tmp.ciphers_raw);
5226 s->s3->tmp.ciphers_raw = NULL;
5227 s->s3->tmp.ciphers_rawlen = 0;
5228
5229 if (sslv2format) {
5230 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5231 PACKET sslv2ciphers = *cipher_suites;
5232 unsigned int leadbyte;
5233 unsigned char *raw;
5234
5235 /*
5236 * We store the raw ciphers list in SSLv3+ format so we need to do some
5237 * preprocessing to convert the list first. If there are any SSLv2 only
5238 * ciphersuites with a non-zero leading byte then we are going to
5239 * slightly over allocate because we won't store those. But that isn't a
5240 * problem.
5241 */
5242 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5243 s->s3->tmp.ciphers_raw = raw;
5244 if (raw == NULL) {
f63a17d6
MC		 5245 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5246 ERR_R_MALLOC_FAILURE);
5247 return 0;
ccb8e6e0
BK		 5248 }
5249 for (s->s3->tmp.ciphers_rawlen = 0;
5250 PACKET_remaining(&sslv2ciphers) > 0;
5251 raw += TLS_CIPHER_LEN) {
5252 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5253 || (leadbyte == 0
5254 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5255 TLS_CIPHER_LEN))
5256 || (leadbyte != 0
5257 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5258 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5259 SSL_R_BAD_PACKET);
ccb8e6e0
BK		 5260 OPENSSL_free(s->s3->tmp.ciphers_raw);
5261 s->s3->tmp.ciphers_raw = NULL;
5262 s->s3->tmp.ciphers_rawlen = 0;
f63a17d6 5263 return 0;
ccb8e6e0
BK		 5264 }
5265 if (leadbyte == 0)
5266 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5267 }
5268 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5269 &s->s3->tmp.ciphers_rawlen)) {
f63a17d6
MC		 5270 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5271 ERR_R_INTERNAL_ERROR);
5272 return 0;
ccb8e6e0 5273 }
90134d98 5274 return 1;
90134d98
BK		 5275}
5276
5277int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5278 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5279 STACK_OF(SSL_CIPHER) **scsvs)
5280{
90134d98
BK		 5281 PACKET pkt;
5282
5283 if (!PACKET_buf_init(&pkt, bytes, len))
5284 return 0;
f63a17d6 5285 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5286}
5287
5288int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5289 STACK_OF(SSL_CIPHER) **skp,
5290 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5291 int sslv2format, int fatal)
90134d98
BK		 5292{
5293 const SSL_CIPHER *c;
5294 STACK_OF(SSL_CIPHER) *sk = NULL;
5295 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5296 int n;
5297 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5298 unsigned char cipher[SSLV2_CIPHER_LEN];
5299
5300 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5301
5302 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5303 if (fatal)
5304 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5305 SSL_R_NO_CIPHERS_SPECIFIED);
5306 else
5307 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5308 return 0;
5309 }
5310
5311 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5312 if (fatal)
5313 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5314 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5315 else
5316 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5317 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5318 return 0;
5319 }
5320
5321 sk = sk_SSL_CIPHER_new_null();
5322 scsvs = sk_SSL_CIPHER_new_null();
5323 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5324 if (fatal)
5325 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5326 ERR_R_MALLOC_FAILURE);
5327 else
5328 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5329 goto err;
5330 }
ccb8e6e0
BK		 5331
5332 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5333 /*
5334 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5335 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5336 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5337 */
5338 if (sslv2format && cipher[0] != '\0')
5339 continue;
5340
ccb8e6e0
BK		 5341 /* For SSLv2-compat, ignore leading 0-byte. */
5342 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5343 if (c != NULL) {
90134d98
BK		 5344 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5345 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5346 if (fatal)
5347 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5348 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5349 else
5350 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5351 goto err;
5352 }
5353 }
5354 }
5355 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5356 if (fatal)
5357 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5358 SSL_R_BAD_LENGTH);
5359 else
5360 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5361 goto err;
5362 }
5363
90134d98
BK		 5364 if (skp != NULL)
5365 *skp = sk;
5366 else
5367 sk_SSL_CIPHER_free(sk);
5368 if (scsvs_out != NULL)
5369 *scsvs_out = scsvs;
5370 else
5371 sk_SSL_CIPHER_free(scsvs);
5372 return 1;
ccb8e6e0
BK		 5373 err:
5374 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5375 sk_SSL_CIPHER_free(scsvs);
5376 return 0;
ccb8e6e0 5377}
3fc8d856
MC		 5378
5379int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5380{
5381 ctx->max_early_data = max_early_data;
5382
5383 return 1;
5384}
5385
46dcb945 5386uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5387{
5388 return ctx->max_early_data;
5389}
5390
5391int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5392{
5393 s->max_early_data = max_early_data;
5394
5395 return 1;
5396}
5397
a8e75d56 5398uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5399{
5400 return s->max_early_data;
5401}
ae3947de
RS		 5402
5403int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5404{
2139145b
BK		 5405 if (s->drbg != NULL) {
5406 /*
5407 * Currently, it's the duty of the caller to serialize the generate
5408 * requests to the DRBG. So formally we have to check whether
5409 * s->drbg->lock != NULL and take the lock if this is the case.
5410 * However, this DRBG is unique to a given SSL object, and we already
5411 * require that SSL objects are only accessed by a single thread at
5412 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5413 * no risk that this DRBG is accessed by a child DRBG in parallel
5414 * for reseeding. As such, we can rely on the application's
5415 * serialization of SSL accesses for the needed concurrency protection
5416 * here.
5417 */
20928ff6 5418 return RAND_DRBG_bytes(s->drbg, rnd, size);
2139145b 5419 }
20928ff6
KR		 5420 if (size > INT_MAX)
5421 return 0;
5422 return RAND_bytes(rnd, size);
ae3947de 5423}
cf72c757
F		 5424
5425__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5426{
5427 /* Return any active Max Fragment Len extension */
5428 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5429 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5430
5431 /* return current SSL connection setting */
5432 return ssl->max_send_fragment;
5433}
5434
5435__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5436{
5437 /* Return a value regarding an active Max Fragment Len extension */
5438 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5439 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5440 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5441
5442 /* else limit |split_send_fragment| to current |max_send_fragment| */
5443 if (ssl->split_send_fragment > ssl->max_send_fragment)
5444 return ssl->max_send_fragment;
5445
5446 /* return current SSL connection setting */
5447 return ssl->split_send_fragment;
5448}
042c5753
MC		 5449
5450int SSL_stateless(SSL *s)
5451{
5452 int ret;
5453
5454 /* Ensure there is no state left over from a previous invocation */
5455 if (!SSL_clear(s))
d6bb50a5 5456 return 0;
042c5753
MC		 5457
5458 ERR_clear_error();
5459
5460 s->s3->flags |= TLS1_FLAGS_STATELESS;
5461 ret = SSL_accept(s);
5462 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5463
d6bb50a5 5464 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5465 return 1;
5466
e440f513
MC		 5467 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5468 return 0;
5469
5470 return -1;
042c5753 5471}
9d75dce3
TS		 5472
5473void SSL_force_post_handshake_auth(SSL *ssl)
5474{
5475 ssl->pha_forced = 1;
5476}
5477
5478int SSL_verify_client_post_handshake(SSL *ssl)
5479{
5480 if (!SSL_IS_TLS13(ssl)) {
5481 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5482 return 0;
5483 }
5484 if (!ssl->server) {
5485 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5486 return 0;
5487 }
5488
5489 if (!SSL_is_init_finished(ssl)) {
5490 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5491 return 0;
5492 }
5493
5494 switch (ssl->post_handshake_auth) {
5495 case SSL_PHA_NONE:
5496 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5497 return 0;
5498 default:
5499 case SSL_PHA_EXT_SENT:
5500 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5501 return 0;
5502 case SSL_PHA_EXT_RECEIVED:
5503 break;
5504 case SSL_PHA_REQUEST_PENDING:
5505 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5506 return 0;
5507 case SSL_PHA_REQUESTED:
5508 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5509 return 0;
5510 }
5511
5512 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5513
5514 /* checks verify_mode and algorithm_auth */
5515 if (!send_certificate_request(ssl)) {
5516 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5517 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5518 return 0;
5519 }
5520
5521 ossl_statem_set_in_init(ssl, 1);
5522 return 1;
5523}
df0fed9a
TS		 5524
5525int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5526 SSL_CTX_generate_session_ticket_fn gen_cb,
5527 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5528 void *arg)
5529{
5530 ctx->generate_ticket_cb = gen_cb;
5531 ctx->decrypt_ticket_cb = dec_cb;
5532 ctx->ticket_cb_data = arg;
5533 return 1;
5534}
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