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0f113f3e 1/*
33388b44 2 * Copyright 1995-2020 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 *
2c18d164 6 * Licensed under the Apache License 2.0 (the "License"). You may not use
846e33c7
RS		 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>
706457b7 13#include "ssl_local.h"
7c3a7561 14#include "e_os.h"
ec577822 15#include <openssl/objects.h>
bb7cd4e3 16#include <openssl/x509v3.h>
6434abbf 17#include <openssl/rand.h>
6decf943 18#include <openssl/rand_drbg.h>
67c8e7f4 19#include <openssl/ocsp.h>
3c27208f
RS		 20#include <openssl/dh.h>
21#include <openssl/engine.h>
07bbc92c 22#include <openssl/async.h>
3c27208f 23#include <openssl/ct.h>
77359d22 24#include <openssl/trace.h>
67dc995e 25#include "internal/cryptlib.h"
cd420b0b 26#include "internal/refcount.h"
50ec7505 27#include "internal/ktls.h"
0f113f3e 28
852c2ed2
RS		 29DEFINE_STACK_OF(X509)
30DEFINE_STACK_OF(X509_NAME)
31DEFINE_STACK_OF_CONST(SSL_CIPHER)
32DEFINE_STACK_OF(X509_EXTENSION)
33DEFINE_STACK_OF(OCSP_RESPID)
34DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
35DEFINE_STACK_OF(SCT)
36
fce78bd4
BE		 37static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, 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_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
46 int t)
47{
48 (void)r;
49 (void)s;
50 (void)t;
51 return ssl_undefined_function(ssl);
52}
53
54static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
55 unsigned char *s, size_t t, size_t *u)
56{
57 (void)r;
58 (void)s;
59 (void)t;
60 (void)u;
61 return ssl_undefined_function(ssl);
62}
63
64static int ssl_undefined_function_4(SSL *ssl, int r)
65{
66 (void)r;
67 return ssl_undefined_function(ssl);
68}
69
70static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
71 unsigned char *t)
72{
73 (void)r;
74 (void)s;
75 (void)t;
76 return ssl_undefined_function(ssl);
77}
78
79static int ssl_undefined_function_6(int r)
80{
81 (void)r;
82 return ssl_undefined_function(NULL);
83}
84
85static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
86 const char *t, size_t u,
87 const unsigned char *v, size_t w, int x)
88{
89 (void)r;
90 (void)s;
91 (void)t;
92 (void)u;
93 (void)v;
94 (void)w;
95 (void)x;
96 return ssl_undefined_function(ssl);
97}
98
0f113f3e 99SSL3_ENC_METHOD ssl3_undef_enc_method = {
fce78bd4
BE		 100 ssl_undefined_function_1,
101 ssl_undefined_function_2,
0f113f3e 102 ssl_undefined_function,
fce78bd4
BE		 103 ssl_undefined_function_3,
104 ssl_undefined_function_4,
105 ssl_undefined_function_5,
0f113f3e
MC		 106 NULL, /* client_finished_label */
107 0, /* client_finished_label_len */
108 NULL, /* server_finished_label */
109 0, /* server_finished_label_len */
fce78bd4
BE		 110 ssl_undefined_function_6,
111 ssl_undefined_function_7,
0f113f3e 112};
d02b48c6 113
07bbc92c
MC		 114struct ssl_async_args {
115 SSL *s;
116 void *buf;
348240c6 117 size_t num;
a230b26e 118 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 119 union {
eda75751 120 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 121 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 122 int (*func_other) (SSL *);
add2f5ca 123 } f;
07bbc92c
MC		 124};
125
919ba009
VD		 126static const struct {
127 uint8_t mtype;
128 uint8_t ord;
a230b26e 129 int nid;
919ba009 130} dane_mds[] = {
a230b26e
EK		 131 {
132 DANETLS_MATCHING_FULL, 0, NID_undef
133 },
134 {
135 DANETLS_MATCHING_2256, 1, NID_sha256
136 },
137 {
138 DANETLS_MATCHING_2512, 2, NID_sha512
139 },
919ba009
VD		 140};
141
142static int dane_ctx_enable(struct dane_ctx_st *dctx)
143{
144 const EVP_MD **mdevp;
145 uint8_t *mdord;
146 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 147 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 148 size_t i;
149
5ae4ceb9
VD		 150 if (dctx->mdevp != NULL)
151 return 1;
152
919ba009
VD		 153 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
154 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
155
156 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 157 OPENSSL_free(mdord);
919ba009
VD		 158 OPENSSL_free(mdevp);
159 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
160 return 0;
161 }
162
163 /* Install default entries */
164 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
165 const EVP_MD *md;
166
167 if (dane_mds[i].nid == NID_undef ||
168 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
169 continue;
170 mdevp[dane_mds[i].mtype] = md;
171 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
172 }
173
174 dctx->mdevp = mdevp;
175 dctx->mdord = mdord;
176 dctx->mdmax = mdmax;
177
178 return 1;
179}
180
181static void dane_ctx_final(struct dane_ctx_st *dctx)
182{
183 OPENSSL_free(dctx->mdevp);
184 dctx->mdevp = NULL;
185
186 OPENSSL_free(dctx->mdord);
187 dctx->mdord = NULL;
188 dctx->mdmax = 0;
189}
190
191static void tlsa_free(danetls_record *t)
192{
193 if (t == NULL)
194 return;
195 OPENSSL_free(t->data);
196 EVP_PKEY_free(t->spki);
197 OPENSSL_free(t);
198}
199
b9aec69a 200static void dane_final(SSL_DANE *dane)
919ba009
VD		 201{
202 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
203 dane->trecs = NULL;
204
205 sk_X509_pop_free(dane->certs, X509_free);
206 dane->certs = NULL;
207
208 X509_free(dane->mcert);
209 dane->mcert = NULL;
210 dane->mtlsa = NULL;
211 dane->mdpth = -1;
212 dane->pdpth = -1;
213}
214
215/*
216 * dane_copy - Copy dane configuration, sans verification state.
217 */
218static int ssl_dane_dup(SSL *to, SSL *from)
219{
220 int num;
221 int i;
222
223 if (!DANETLS_ENABLED(&from->dane))
224 return 1;
225
e431363f 226 num = sk_danetls_record_num(from->dane.trecs);
919ba009 227 dane_final(&to->dane);
5ae4ceb9 228 to->dane.flags = from->dane.flags;
9f6b22b8 229 to->dane.dctx = &to->ctx->dane;
7a908204 230 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 231
232 if (to->dane.trecs == NULL) {
233 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
234 return 0;
235 }
919ba009 236
919ba009
VD		 237 for (i = 0; i < num; ++i) {
238 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 239
919ba009
VD		 240 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
241 t->data, t->dlen) <= 0)
242 return 0;
243 }
244 return 1;
245}
246
a230b26e
EK		 247static int dane_mtype_set(struct dane_ctx_st *dctx,
248 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 249{
250 int i;
251
252 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
a230b26e 253 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 254 return 0;
255 }
256
257 if (mtype > dctx->mdmax) {
258 const EVP_MD **mdevp;
259 uint8_t *mdord;
a230b26e 260 int n = ((int)mtype) + 1;
919ba009
VD		 261
262 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
263 if (mdevp == NULL) {
264 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
265 return -1;
266 }
267 dctx->mdevp = mdevp;
268
269 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
270 if (mdord == NULL) {
271 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
272 return -1;
273 }
274 dctx->mdord = mdord;
275
276 /* Zero-fill any gaps */
a230b26e 277 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 278 mdevp[i] = NULL;
279 mdord[i] = 0;
280 }
281
282 dctx->mdmax = mtype;
283 }
284
285 dctx->mdevp[mtype] = md;
286 /* Coerce ordinal of disabled matching types to 0 */
287 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
288
289 return 1;
290}
291
b9aec69a 292static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 293{
294 if (mtype > dane->dctx->mdmax)
295 return NULL;
296 return dane->dctx->mdevp[mtype];
297}
298
a230b26e
EK		 299static int dane_tlsa_add(SSL_DANE *dane,
300 uint8_t usage,
301 uint8_t selector,
a41a6120 302 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 303{
304 danetls_record *t;
305 const EVP_MD *md = NULL;
306 int ilen = (int)dlen;
307 int i;
9f6b22b8 308 int num;
919ba009
VD		 309
310 if (dane->trecs == NULL) {
311 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
312 return -1;
313 }
314
315 if (ilen < 0 || dlen != (size_t)ilen) {
316 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
317 return 0;
318 }
319
320 if (usage > DANETLS_USAGE_LAST) {
321 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
322 return 0;
323 }
324
325 if (selector > DANETLS_SELECTOR_LAST) {
326 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
327 return 0;
328 }
329
330 if (mtype != DANETLS_MATCHING_FULL) {
331 md = tlsa_md_get(dane, mtype);
332 if (md == NULL) {
333 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
334 return 0;
335 }
336 }
337
338 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
340 return 0;
341 }
342 if (!data) {
343 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
344 return 0;
345 }
346
347 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
348 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
349 return -1;
350 }
351
352 t->usage = usage;
353 t->selector = selector;
354 t->mtype = mtype;
348240c6 355 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 356 if (t->data == NULL) {
357 tlsa_free(t);
358 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
359 return -1;
360 }
348240c6
MC		 361 memcpy(t->data, data, dlen);
362 t->dlen = dlen;
919ba009
VD		 363
364 /* Validate and cache full certificate or public key */
365 if (mtype == DANETLS_MATCHING_FULL) {
366 const unsigned char *p = data;
367 X509 *cert = NULL;
368 EVP_PKEY *pkey = NULL;
369
370 switch (selector) {
371 case DANETLS_SELECTOR_CERT:
348240c6 372 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 373 dlen != (size_t)(p - data)) {
374 tlsa_free(t);
375 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
376 return 0;
377 }
378 if (X509_get0_pubkey(cert) == NULL) {
379 tlsa_free(t);
380 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
381 return 0;
382 }
383
384 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
385 X509_free(cert);
386 break;
387 }
388
389 /*
390 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
391 * records that contain full certificates of trust-anchors that are
392 * not present in the wire chain. For usage PKIX-TA(0), we augment
393 * the chain with untrusted Full(0) certificates from DNS, in case
394 * they are missing from the chain.
395 */
396 if ((dane->certs == NULL &&
397 (dane->certs = sk_X509_new_null()) == NULL) ||
398 !sk_X509_push(dane->certs, cert)) {
399 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
400 X509_free(cert);
401 tlsa_free(t);
402 return -1;
403 }
404 break;
405
406 case DANETLS_SELECTOR_SPKI:
348240c6 407 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 408 dlen != (size_t)(p - data)) {
409 tlsa_free(t);
410 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
411 return 0;
412 }
413
414 /*
415 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
416 * records that contain full bare keys of trust-anchors that are
417 * not present in the wire chain.
418 */
419 if (usage == DANETLS_USAGE_DANE_TA)
420 t->spki = pkey;
421 else
422 EVP_PKEY_free(pkey);
423 break;
424 }
425 }
426
427 /*-
428 * Find the right insertion point for the new record.
429 *
430 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
431 * they can be processed first, as they require no chain building, and no
432 * expiration or hostname checks. Because DANE-EE(3) is numerically
433 * largest, this is accomplished via descending sort by "usage".
434 *
435 * We also sort in descending order by matching ordinal to simplify
436 * the implementation of digest agility in the verification code.
437 *
438 * The choice of order for the selector is not significant, so we
439 * use the same descending order for consistency.
440 */
9f6b22b8
VD		 441 num = sk_danetls_record_num(dane->trecs);
442 for (i = 0; i < num; ++i) {
919ba009 443 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 444
919ba009
VD		 445 if (rec->usage > usage)
446 continue;
447 if (rec->usage < usage)
448 break;
449 if (rec->selector > selector)
450 continue;
451 if (rec->selector < selector)
452 break;
453 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
454 continue;
455 break;
456 }
457
458 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
459 tlsa_free(t);
460 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
461 return -1;
462 }
463 dane->umask |= DANETLS_USAGE_BIT(usage);
464
465 return 1;
466}
467
c8feba72
BK		 468/*
469 * Return 0 if there is only one version configured and it was disabled
470 * at configure time. Return 1 otherwise.
471 */
472static int ssl_check_allowed_versions(int min_version, int max_version)
473{
474 int minisdtls = 0, maxisdtls = 0;
475
476 /* Figure out if we're doing DTLS versions or TLS versions */
477 if (min_version == DTLS1_BAD_VER
478 || min_version >> 8 == DTLS1_VERSION_MAJOR)
479 minisdtls = 1;
480 if (max_version == DTLS1_BAD_VER
481 || max_version >> 8 == DTLS1_VERSION_MAJOR)
482 maxisdtls = 1;
483 /* A wildcard version of 0 could be DTLS or TLS. */
484 if ((minisdtls && !maxisdtls && max_version != 0)
485 || (maxisdtls && !minisdtls && min_version != 0)) {
486 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
487 return 0;
488 }
489
490 if (minisdtls || maxisdtls) {
491 /* Do DTLS version checks. */
492 if (min_version == 0)
493 /* Ignore DTLS1_BAD_VER */
494 min_version = DTLS1_VERSION;
495 if (max_version == 0)
496 max_version = DTLS1_2_VERSION;
497#ifdef OPENSSL_NO_DTLS1_2
498 if (max_version == DTLS1_2_VERSION)
499 max_version = DTLS1_VERSION;
500#endif
501#ifdef OPENSSL_NO_DTLS1
502 if (min_version == DTLS1_VERSION)
503 min_version = DTLS1_2_VERSION;
504#endif
79b4444d
DMSP		 505 /* Done massaging versions; do the check. */
506 if (0
c8feba72
BK		 507#ifdef OPENSSL_NO_DTLS1
508 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
509 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
510#endif
511#ifdef OPENSSL_NO_DTLS1_2
512 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
513 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
514#endif
515 )
516 return 0;
517 } else {
518 /* Regular TLS version checks. */
79b4444d
DMSP		 519 if (min_version == 0)
520 min_version = SSL3_VERSION;
521 if (max_version == 0)
522 max_version = TLS1_3_VERSION;
c8feba72 523#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 524 if (max_version == TLS1_3_VERSION)
525 max_version = TLS1_2_VERSION;
c8feba72
BK		 526#endif
527#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 528 if (max_version == TLS1_2_VERSION)
529 max_version = TLS1_1_VERSION;
c8feba72
BK		 530#endif
531#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 532 if (max_version == TLS1_1_VERSION)
533 max_version = TLS1_VERSION;
c8feba72
BK		 534#endif
535#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 536 if (max_version == TLS1_VERSION)
537 max_version = SSL3_VERSION;
c8feba72
BK		 538#endif
539#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 540 if (min_version == SSL3_VERSION)
541 min_version = TLS1_VERSION;
c8feba72
BK		 542#endif
543#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 544 if (min_version == TLS1_VERSION)
545 min_version = TLS1_1_VERSION;
c8feba72
BK		 546#endif
547#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 548 if (min_version == TLS1_1_VERSION)
549 min_version = TLS1_2_VERSION;
c8feba72
BK		 550#endif
551#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 552 if (min_version == TLS1_2_VERSION)
553 min_version = TLS1_3_VERSION;
c8feba72 554#endif
79b4444d
DMSP		 555 /* Done massaging versions; do the check. */
556 if (0
c8feba72
BK		 557#ifdef OPENSSL_NO_SSL3
558 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
559#endif
560#ifdef OPENSSL_NO_TLS1
561 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
562#endif
563#ifdef OPENSSL_NO_TLS1_1
564 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
565#endif
566#ifdef OPENSSL_NO_TLS1_2
567 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
568#endif
569#ifdef OPENSSL_NO_TLS1_3
570 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
571#endif
572 )
573 return 0;
574 }
575 return 1;
576}
577
d31fb0b5
RS		 578static void clear_ciphers(SSL *s)
579{
580 /* clear the current cipher */
581 ssl_clear_cipher_ctx(s);
582 ssl_clear_hash_ctx(&s->read_hash);
583 ssl_clear_hash_ctx(&s->write_hash);
584}
585
4f43d0e7 586int SSL_clear(SSL *s)
0f113f3e 587{
0f113f3e
MC		 588 if (s->method == NULL) {
589 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 590 return 0;
0f113f3e 591 }
d02b48c6 592
0f113f3e
MC		 593 if (ssl_clear_bad_session(s)) {
594 SSL_SESSION_free(s->session);
595 s->session = NULL;
596 }
9368f865
MC		 597 SSL_SESSION_free(s->psksession);
598 s->psksession = NULL;
add8d0e9
MC		 599 OPENSSL_free(s->psksession_id);
600 s->psksession_id = NULL;
601 s->psksession_id_len = 0;
808d1601 602 s->hello_retry_request = 0;
36ff232c 603 s->sent_tickets = 0;
d62bfb39 604
0f113f3e
MC		 605 s->error = 0;
606 s->hit = 0;
607 s->shutdown = 0;
d02b48c6 608
0f113f3e
MC		 609 if (s->renegotiate) {
610 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
611 return 0;
612 }
d02b48c6 613
fe3a3291 614 ossl_statem_clear(s);
413c4f45 615
0f113f3e
MC		 616 s->version = s->method->version;
617 s->client_version = s->version;
618 s->rwstate = SSL_NOTHING;
d02b48c6 619
25aaa98a
RS		 620 BUF_MEM_free(s->init_buf);
621 s->init_buf = NULL;
d31fb0b5 622 clear_ciphers(s);
0f113f3e 623 s->first_packet = 0;
d02b48c6 624
44c04a2e
MC		 625 s->key_update = SSL_KEY_UPDATE_NONE;
626
88834998
TS		 627 EVP_MD_CTX_free(s->pha_dgst);
628 s->pha_dgst = NULL;
629
919ba009
VD		 630 /* Reset DANE verification result state */
631 s->dane.mdpth = -1;
632 s->dane.pdpth = -1;
633 X509_free(s->dane.mcert);
634 s->dane.mcert = NULL;
635 s->dane.mtlsa = NULL;
636
637 /* Clear the verification result peername */
638 X509_VERIFY_PARAM_move_peername(s->param, NULL);
639
29948ac8
BK		 640 /* Clear any shared connection state */
641 OPENSSL_free(s->shared_sigalgs);
642 s->shared_sigalgs = NULL;
643 s->shared_sigalgslen = 0;
644
0f113f3e
MC		 645 /*
646 * Check to see if we were changed into a different method, if so, revert
24252537 647 * back.
0f113f3e 648 */
24252537 649 if (s->method != s->ctx->method) {
0f113f3e
MC		 650 s->method->ssl_free(s);
651 s->method = s->ctx->method;
652 if (!s->method->ssl_new(s))
a89325e4 653 return 0;
b77f3ed1
MC		 654 } else {
655 if (!s->method->ssl_clear(s))
656 return 0;
657 }
33d23b87 658
af9752e5 659 RECORD_LAYER_clear(&s->rlayer);
33d23b87 660
a89325e4 661 return 1;
0f113f3e 662}
d02b48c6 663
4f43d0e7 664/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 665int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
666{
667 STACK_OF(SSL_CIPHER) *sk;
668
669 ctx->method = meth;
670
5d120511 671 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
2340ed27
BK		 672 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
673 return 0;
674 }
f865b081
MC		 675 sk = ssl_create_cipher_list(ctx->method,
676 ctx->tls13_ciphersuites,
677 &(ctx->cipher_list),
0f113f3e 678 &(ctx->cipher_list_by_id),
5d120511 679 OSSL_default_cipher_list(), ctx->cert);
0f113f3e 680 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 681 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 682 return 0;
0f113f3e 683 }
208fb891 684 return 1;
0f113f3e 685}
d02b48c6 686
4f43d0e7 687SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 688{
689 SSL *s;
690
691 if (ctx == NULL) {
692 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 693 return NULL;
0f113f3e
MC		 694 }
695 if (ctx->method == NULL) {
696 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 697 return NULL;
0f113f3e
MC		 698 }
699
b51bce94 700 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 701 if (s == NULL)
702 goto err;
0f113f3e 703
e6b10c34 704 s->references = 1;
16203f7b 705 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 706 if (s->lock == NULL) {
707 OPENSSL_free(s);
708 s = NULL;
ae3947de 709 goto err;
e6b10c34 710 }
ae3947de 711
c036e210 712 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 713
0f113f3e 714 s->options = ctx->options;
5ae4ceb9 715 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 716 s->min_proto_version = ctx->min_proto_version;
717 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 718 s->mode = ctx->mode;
719 s->max_cert_list = ctx->max_cert_list;
3fc8d856 720 s->max_early_data = ctx->max_early_data;
4e8548e8 721 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 722 s->num_tickets = ctx->num_tickets;
e97be718 723 s->pha_enabled = ctx->pha_enabled;
0f113f3e 724
f865b081
MC		 725 /* Shallow copy of the ciphersuites stack */
726 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
727 if (s->tls13_ciphersuites == NULL)
728 goto err;
729
2c382349
KR		 730 /*
731 * Earlier library versions used to copy the pointer to the CERT, not
732 * its contents; only when setting new parameters for the per-SSL
733 * copy, ssl_cert_new would be called (and the direct reference to
734 * the per-SSL_CTX settings would be lost, but those still were
735 * indirectly accessed for various purposes, and for that reason they
736 * used to be known as s->ctx->default_cert). Now we don't look at the
737 * SSL_CTX's CERT after having duplicated it once.
738 */
739 s->cert = ssl_cert_dup(ctx->cert);
740 if (s->cert == NULL)
741 goto err;
0f113f3e 742
52e1d7b1 743 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 744 s->msg_callback = ctx->msg_callback;
745 s->msg_callback_arg = ctx->msg_callback_arg;
746 s->verify_mode = ctx->verify_mode;
747 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 748 s->record_padding_cb = ctx->record_padding_cb;
749 s->record_padding_arg = ctx->record_padding_arg;
750 s->block_padding = ctx->block_padding;
0f113f3e 751 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 752 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 753 goto err;
0f113f3e
MC		 754 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
755 s->verify_callback = ctx->default_verify_callback;
756 s->generate_session_id = ctx->generate_session_id;
757
758 s->param = X509_VERIFY_PARAM_new();
a71edf3b 759 if (s->param == NULL)
0f113f3e
MC		 760 goto err;
761 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 762 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 763
764 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 765 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 766 s->split_send_fragment = ctx->split_send_fragment;
767 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 768 if (s->max_pipelines > 1)
769 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 770 if (ctx->default_read_buf_len > 0)
771 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 772
16203f7b 773 SSL_CTX_up_ref(ctx);
0f113f3e 774 s->ctx = ctx;
aff8c126
RS		 775 s->ext.debug_cb = 0;
776 s->ext.debug_arg = NULL;
777 s->ext.ticket_expected = 0;
778 s->ext.status_type = ctx->ext.status_type;
779 s->ext.status_expected = 0;
780 s->ext.ocsp.ids = NULL;
781 s->ext.ocsp.exts = NULL;
782 s->ext.ocsp.resp = NULL;
783 s->ext.ocsp.resp_len = 0;
16203f7b 784 SSL_CTX_up_ref(ctx);
222da979 785 s->session_ctx = ctx;
a230b26e 786#ifndef OPENSSL_NO_EC
aff8c126
RS		 787 if (ctx->ext.ecpointformats) {
788 s->ext.ecpointformats =
789 OPENSSL_memdup(ctx->ext.ecpointformats,
790 ctx->ext.ecpointformats_len);
791 if (!s->ext.ecpointformats)
0f113f3e 792 goto err;
aff8c126
RS		 793 s->ext.ecpointformats_len =
794 ctx->ext.ecpointformats_len;
795 }
dbc6268f 796#endif
aff8c126
RS		 797 if (ctx->ext.supportedgroups) {
798 s->ext.supportedgroups =
799 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 800 ctx->ext.supportedgroups_len
b92d7b62 801 * sizeof(*ctx->ext.supportedgroups));
aff8c126 802 if (!s->ext.supportedgroups)
0f113f3e 803 goto err;
aff8c126 804 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 805 }
dbc6268f 806
a230b26e 807#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 808 s->ext.npn = NULL;
a230b26e 809#endif
6f017a8f 810
aff8c126
RS		 811 if (s->ctx->ext.alpn) {
812 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
813 if (s->ext.alpn == NULL)
0f113f3e 814 goto err;
aff8c126
RS		 815 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
816 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 817 }
d02b48c6 818
696178ed 819 s->verified_chain = NULL;
0f113f3e 820 s->verify_result = X509_V_OK;
d02b48c6 821
a974e64a
MC		 822 s->default_passwd_callback = ctx->default_passwd_callback;
823 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
824
0f113f3e 825 s->method = ctx->method;
d02b48c6 826
44c04a2e
MC		 827 s->key_update = SSL_KEY_UPDATE_NONE;
828
c9598459
MC		 829 s->allow_early_data_cb = ctx->allow_early_data_cb;
830 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
831
0f113f3e
MC		 832 if (!s->method->ssl_new(s))
833 goto err;
d02b48c6 834
0f113f3e 835 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 836
61986d32 837 if (!SSL_clear(s))
69f68237 838 goto err;
58964a49 839
25a807bc
F		 840 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
841 goto err;
58964a49 842
ddac1974 843#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 844 s->psk_client_callback = ctx->psk_client_callback;
845 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 846#endif
f46184bd
MC		 847 s->psk_find_session_cb = ctx->psk_find_session_cb;
848 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 849
9f5a87fd
PY		 850 s->async_cb = ctx->async_cb;
851 s->async_cb_arg = ctx->async_cb_arg;
852
07bbc92c
MC		 853 s->job = NULL;
854
ed29e82a
RP		 855#ifndef OPENSSL_NO_CT
856 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 857 ctx->ct_validation_callback_arg))
ed29e82a
RP		 858 goto err;
859#endif
860
16203f7b 861 return s;
0f113f3e 862 err:
62adbcee 863 SSL_free(s);
0f113f3e 864 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 865 return NULL;
0f113f3e 866}
d02b48c6 867
e417070c
RS		 868int SSL_is_dtls(const SSL *s)
869{
870 return SSL_IS_DTLS(s) ? 1 : 0;
871}
872
c5ebfcab 873int SSL_up_ref(SSL *s)
a18a31e4 874{
16203f7b 875 int i;
c5ebfcab 876
2f545ae4 877 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 878 return 0;
879
880 REF_PRINT_COUNT("SSL", s);
881 REF_ASSERT_ISNT(i < 2);
882 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 883}
884
0f113f3e
MC		 885int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
886 unsigned int sid_ctx_len)
887{
fe9edc9d 888 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
0f113f3e
MC		 889 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
890 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
891 return 0;
892 }
893 ctx->sid_ctx_length = sid_ctx_len;
894 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 895
896 return 1;
0f113f3e 897}
4eb77b26 898
0f113f3e
MC		 899int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
900 unsigned int sid_ctx_len)
901{
902 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
903 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
904 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
905 return 0;
906 }
907 ssl->sid_ctx_length = sid_ctx_len;
908 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 909
910 return 1;
0f113f3e 911}
b4cadc6e 912
dc644fe2 913int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 914{
16203f7b 915 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 916 ctx->generate_session_id = cb;
16203f7b 917 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 918 return 1;
919}
dc644fe2
GT		 920
921int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 922{
16203f7b 923 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 924 ssl->generate_session_id = cb;
16203f7b 925 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 926 return 1;
927}
dc644fe2 928
f85c9904 929int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 930 unsigned int id_len)
931{
932 /*
933 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 934 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 935 * find if there's a session in the hash table that would conflict with
936 * any new session built out of this id/id_len and the ssl_version in use
937 * by this SSL.
938 */
939 SSL_SESSION r, *p;
940
cbe29648 941 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 942 return 0;
943
944 r.ssl_version = ssl->version;
945 r.session_id_length = id_len;
946 memcpy(r.session_id, id, id_len);
947
e2bb9b9b
TS		 948 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
949 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
950 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 951 return (p != NULL);
952}
dc644fe2 953
bb7cd4e3 954int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 955{
956 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
957}
bb7cd4e3
DSH		 958
959int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 960{
961 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
962}
926a56bf 963
bb7cd4e3 964int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 965{
966 return X509_VERIFY_PARAM_set_trust(s->param, trust);
967}
bb7cd4e3
DSH		 968
969int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 970{
971 return X509_VERIFY_PARAM_set_trust(s->param, trust);
972}
bb7cd4e3 973
919ba009
VD		 974int SSL_set1_host(SSL *s, const char *hostname)
975{
976 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
977}
978
979int SSL_add1_host(SSL *s, const char *hostname)
980{
981 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
982}
983
984void SSL_set_hostflags(SSL *s, unsigned int flags)
985{
986 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
987}
988
4588cb44 989const char *SSL_get0_peername(SSL *s)
919ba009
VD		 990{
991 return X509_VERIFY_PARAM_get0_peername(s->param);
992}
993
994int SSL_CTX_dane_enable(SSL_CTX *ctx)
995{
996 return dane_ctx_enable(&ctx->dane);
997}
998
5ae4ceb9
VD		 999unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1000{
1001 unsigned long orig = ctx->dane.flags;
1002
1003 ctx->dane.flags |= flags;
1004 return orig;
1005}
1006
1007unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1008{
1009 unsigned long orig = ctx->dane.flags;
1010
1011 ctx->dane.flags &= ~flags;
1012 return orig;
1013}
1014
919ba009
VD		 1015int SSL_dane_enable(SSL *s, const char *basedomain)
1016{
b9aec69a 1017 SSL_DANE *dane = &s->dane;
919ba009
VD		 1018
1019 if (s->ctx->dane.mdmax == 0) {
1020 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1021 return 0;
1022 }
1023 if (dane->trecs != NULL) {
1024 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1025 return 0;
1026 }
1027
8d887efa
VD		 1028 /*
1029 * Default SNI name. This rejects empty names, while set1_host below
1030 * accepts them and disables host name checks. To avoid side-effects with
1031 * invalid input, set the SNI name first.
1032 */
aff8c126 1033 if (s->ext.hostname == NULL) {
dccd20d1 1034 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 1035 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1036 return -1;
8d887efa
VD		 1037 }
1038 }
1039
919ba009
VD		 1040 /* Primary RFC6125 reference identifier */
1041 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1042 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1043 return -1;
1044 }
1045
919ba009
VD		 1046 dane->mdpth = -1;
1047 dane->pdpth = -1;
1048 dane->dctx = &s->ctx->dane;
1049 dane->trecs = sk_danetls_record_new_null();
1050
1051 if (dane->trecs == NULL) {
1052 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1053 return -1;
1054 }
1055 return 1;
1056}
1057
5ae4ceb9
VD		 1058unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1059{
1060 unsigned long orig = ssl->dane.flags;
1061
1062 ssl->dane.flags |= flags;
1063 return orig;
1064}
1065
1066unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1067{
1068 unsigned long orig = ssl->dane.flags;
1069
1070 ssl->dane.flags &= ~flags;
1071 return orig;
1072}
1073
919ba009
VD		 1074int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1075{
b9aec69a 1076 SSL_DANE *dane = &s->dane;
919ba009 1077
c0a445a9 1078 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1079 return -1;
1080 if (dane->mtlsa) {
1081 if (mcert)
1082 *mcert = dane->mcert;
1083 if (mspki)
1084 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1085 }
1086 return dane->mdpth;
1087}
1088
1089int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1090 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1091{
b9aec69a 1092 SSL_DANE *dane = &s->dane;
919ba009 1093
c0a445a9 1094 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1095 return -1;
1096 if (dane->mtlsa) {
1097 if (usage)
1098 *usage = dane->mtlsa->usage;
1099 if (selector)
1100 *selector = dane->mtlsa->selector;
1101 if (mtype)
1102 *mtype = dane->mtlsa->mtype;
1103 if (data)
1104 *data = dane->mtlsa->data;
1105 if (dlen)
1106 *dlen = dane->mtlsa->dlen;
1107 }
1108 return dane->mdpth;
1109}
1110
b9aec69a 1111SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1112{
1113 return &s->dane;
1114}
1115
1116int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
a41a6120 1117 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 1118{
1119 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1120}
1121
a230b26e
EK		 1122int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1123 uint8_t ord)
919ba009
VD		 1124{
1125 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1126}
1127
ccf11751 1128int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1129{
1130 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1131}
ccf11751
DSH		 1132
1133int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1134{
1135 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1136}
ccf11751 1137
7af31968 1138X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1139{
1140 return ctx->param;
1141}
7af31968
DSH		 1142
1143X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1144{
1145 return ssl->param;
1146}
7af31968 1147
a5ee80b9 1148void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1149{
1150 ssl_cert_clear_certs(s->cert);
1151}
a5ee80b9 1152
4f43d0e7 1153void SSL_free(SSL *s)
0f113f3e
MC		 1154{
1155 int i;
58964a49 1156
e6e9170d
RS		 1157 if (s == NULL)
1158 return;
2f545ae4 1159 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1160 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1161 if (i > 0)
1162 return;
f3f1cf84 1163 REF_ASSERT_ISNT(i < 0);
d02b48c6 1164
222561fe 1165 X509_VERIFY_PARAM_free(s->param);
919ba009 1166 dane_final(&s->dane);
0f113f3e
MC		 1167 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1168
50ec7505
BP		 1169 RECORD_LAYER_release(&s->rlayer);
1170
b77f3ed1 1171 /* Ignore return value */
2e7dc7cd
MC		 1172 ssl_free_wbio_buffer(s);
1173
65e2d672 1174 BIO_free_all(s->wbio);
50ec7505 1175 s->wbio = NULL;
325cfa85 1176 BIO_free_all(s->rbio);
50ec7505 1177 s->rbio = NULL;
0f113f3e 1178
25aaa98a 1179 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1180
1181 /* add extra stuff */
25aaa98a
RS		 1182 sk_SSL_CIPHER_free(s->cipher_list);
1183 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1184 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
eee2a6a7 1185 sk_SSL_CIPHER_free(s->peer_ciphers);
0f113f3e
MC		 1186
1187 /* Make the next call work :-) */
1188 if (s->session != NULL) {
1189 ssl_clear_bad_session(s);
1190 SSL_SESSION_free(s->session);
1191 }
9368f865 1192 SSL_SESSION_free(s->psksession);
add8d0e9 1193 OPENSSL_free(s->psksession_id);
0f113f3e 1194
d31fb0b5 1195 clear_ciphers(s);
d02b48c6 1196
e0e920b1 1197 ssl_cert_free(s->cert);
29948ac8 1198 OPENSSL_free(s->shared_sigalgs);
0f113f3e 1199 /* Free up if allocated */
d02b48c6 1200
aff8c126 1201 OPENSSL_free(s->ext.hostname);
222da979 1202 SSL_CTX_free(s->session_ctx);
e481f9b9 1203#ifndef OPENSSL_NO_EC
aff8c126 1204 OPENSSL_free(s->ext.ecpointformats);
cd0fb43c 1205 OPENSSL_free(s->ext.peer_ecpointformats);
187753e0 1206#endif /* OPENSSL_NO_EC */
aff8c126 1207 OPENSSL_free(s->ext.supportedgroups);
45436e61 1208 OPENSSL_free(s->ext.peer_supportedgroups);
aff8c126 1209 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1210#ifndef OPENSSL_NO_OCSP
aff8c126 1211 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1212#endif
ed29e82a
RP		 1213#ifndef OPENSSL_NO_CT
1214 SCT_LIST_free(s->scts);
aff8c126 1215 OPENSSL_free(s->ext.scts);
ed29e82a 1216#endif
aff8c126
RS		 1217 OPENSSL_free(s->ext.ocsp.resp);
1218 OPENSSL_free(s->ext.alpn);
cfef5027 1219 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1220 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1221 OPENSSL_free(s->pha_context);
1222 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1223
fa7c2637 1224 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1225 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1226
696178ed
DSH		 1227 sk_X509_pop_free(s->verified_chain, X509_free);
1228
0f113f3e
MC		 1229 if (s->method != NULL)
1230 s->method->ssl_free(s);
1231
e0e920b1 1232 SSL_CTX_free(s->ctx);
7c3908dd 1233
ff75a257
MC		 1234 ASYNC_WAIT_CTX_free(s->waitctx);
1235
e481f9b9 1236#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1237 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1238#endif
1239
e783bae2 1240#ifndef OPENSSL_NO_SRTP
25aaa98a 1241 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1242#endif
1243
16203f7b
AG		 1244 CRYPTO_THREAD_lock_free(s->lock);
1245
0f113f3e
MC		 1246 OPENSSL_free(s);
1247}
1248
65e2d672 1249void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1250{
65e2d672 1251 BIO_free_all(s->rbio);
3ffbe008
MC		 1252 s->rbio = rbio;
1253}
1254
65e2d672 1255void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1256{
1257 /*
1258 * If the output buffering BIO is still in place, remove it
1259 */
2e7dc7cd
MC		 1260 if (s->bbio != NULL)
1261 s->wbio = BIO_pop(s->wbio);
1262
65e2d672 1263 BIO_free_all(s->wbio);
0f113f3e 1264 s->wbio = wbio;
2e7dc7cd
MC		 1265
1266 /* Re-attach |bbio| to the new |wbio|. */
1267 if (s->bbio != NULL)
1268 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1269}
d02b48c6 1270
3ffbe008
MC		 1271void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1272{
65e2d672
MC		 1273 /*
1274 * For historical reasons, this function has many different cases in
1275 * ownership handling.
1276 */
1277
1278 /* If nothing has changed, do nothing */
1279 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1280 return;
1281
1282 /*
1283 * If the two arguments are equal then one fewer reference is granted by the
1284 * caller than we want to take
1285 */
1286 if (rbio != NULL && rbio == wbio)
1287 BIO_up_ref(rbio);
1288
1289 /*
1290 * If only the wbio is changed only adopt one reference.
1291 */
1292 if (rbio == SSL_get_rbio(s)) {
1293 SSL_set0_wbio(s, wbio);
1294 return;
1295 }
1296 /*
1297 * There is an asymmetry here for historical reasons. If only the rbio is
1298 * changed AND the rbio and wbio were originally different, then we only
1299 * adopt one reference.
1300 */
1301 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1302 SSL_set0_rbio(s, rbio);
1303 return;
1304 }
1305
1306 /* Otherwise, adopt both references. */
1307 SSL_set0_rbio(s, rbio);
1308 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1309}
1310
0821bcd4 1311BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1312{
2e7dc7cd 1313 return s->rbio;
0f113f3e 1314}
d02b48c6 1315
0821bcd4 1316BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1317{
2e7dc7cd
MC		 1318 if (s->bbio != NULL) {
1319 /*
1320 * If |bbio| is active, the true caller-configured BIO is its
1321 * |next_bio|.
1322 */
1323 return BIO_next(s->bbio);
1324 }
1325 return s->wbio;
0f113f3e 1326}
d02b48c6 1327
0821bcd4 1328int SSL_get_fd(const SSL *s)
0f113f3e 1329{
2e7dc7cd 1330 return SSL_get_rfd(s);
0f113f3e 1331}
24cbf3ef 1332
0821bcd4 1333int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1334{
1335 int ret = -1;
1336 BIO *b, *r;
1337
1338 b = SSL_get_rbio(s);
1339 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1340 if (r != NULL)
1341 BIO_get_fd(r, &ret);
26a7d938 1342 return ret;
0f113f3e 1343}
d02b48c6 1344
0821bcd4 1345int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1346{
1347 int ret = -1;
1348 BIO *b, *r;
1349
1350 b = SSL_get_wbio(s);
1351 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1352 if (r != NULL)
1353 BIO_get_fd(r, &ret);
26a7d938 1354 return ret;
0f113f3e 1355}
24cbf3ef 1356
bc36ee62 1357#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1358int SSL_set_fd(SSL *s, int fd)
1359{
1360 int ret = 0;
1361 BIO *bio = NULL;
1362
1363 bio = BIO_new(BIO_s_socket());
1364
1365 if (bio == NULL) {
1366 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1367 goto err;
1368 }
1369 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1370 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1371#ifndef OPENSSL_NO_KTLS
1372 /*
1373 * The new socket is created successfully regardless of ktls_enable.
1374 * ktls_enable doesn't change any functionality of the socket, except
1375 * changing the setsockopt to enable the processing of ktls_start.
1376 * Thus, it is not a problem to call it for non-TLS sockets.
1377 */
1378 ktls_enable(fd);
1379#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1380 ret = 1;
1381 err:
26a7d938 1382 return ret;
0f113f3e 1383}
d02b48c6 1384
0f113f3e
MC		 1385int SSL_set_wfd(SSL *s, int fd)
1386{
2e7dc7cd 1387 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1388
2e7dc7cd
MC		 1389 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1390 || (int)BIO_get_fd(rbio, NULL) != fd) {
1391 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1392
1393 if (bio == NULL) {
1394 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1395 return 0;
0f113f3e
MC		 1396 }
1397 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1398 SSL_set0_wbio(s, bio);
50ec7505
BP		 1399#ifndef OPENSSL_NO_KTLS
1400 /*
1401 * The new socket is created successfully regardless of ktls_enable.
1402 * ktls_enable doesn't change any functionality of the socket, except
1403 * changing the setsockopt to enable the processing of ktls_start.
1404 * Thus, it is not a problem to call it for non-TLS sockets.
1405 */
1406 ktls_enable(fd);
1407#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1408 } else {
65e2d672
MC		 1409 BIO_up_ref(rbio);
1410 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1411 }
1412 return 1;
0f113f3e
MC		 1413}
1414
1415int SSL_set_rfd(SSL *s, int fd)
1416{
2e7dc7cd 1417 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1418
2e7dc7cd
MC		 1419 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1420 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1421 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1422
1423 if (bio == NULL) {
1424 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1425 return 0;
0f113f3e
MC		 1426 }
1427 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1428 SSL_set0_rbio(s, bio);
2e7dc7cd 1429 } else {
65e2d672
MC		 1430 BIO_up_ref(wbio);
1431 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1432 }
1433
1434 return 1;
0f113f3e
MC		 1435}
1436#endif
ca03109c
BM		 1437
1438/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1439size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1440{
1441 size_t ret = 0;
1442
555cbb32
TS		 1443 ret = s->s3.tmp.finish_md_len;
1444 if (count > ret)
1445 count = ret;
1446 memcpy(buf, s->s3.tmp.finish_md, count);
0f113f3e
MC		 1447 return ret;
1448}
ca03109c
BM		 1449
1450/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1451size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1452{
1453 size_t ret = 0;
ca03109c 1454
555cbb32
TS		 1455 ret = s->s3.tmp.peer_finish_md_len;
1456 if (count > ret)
1457 count = ret;
1458 memcpy(buf, s->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1459 return ret;
1460}
ca03109c 1461
0821bcd4 1462int SSL_get_verify_mode(const SSL *s)
0f113f3e 1463{
26a7d938 1464 return s->verify_mode;
0f113f3e 1465}
d02b48c6 1466
0821bcd4 1467int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1468{
1469 return X509_VERIFY_PARAM_get_depth(s->param);
1470}
7f89714e 1471
0f113f3e 1472int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1473 return s->verify_callback;
0f113f3e 1474}
d02b48c6 1475
0821bcd4 1476int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1477{
26a7d938 1478 return ctx->verify_mode;
0f113f3e 1479}
d02b48c6 1480
0821bcd4 1481int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1482{
1483 return X509_VERIFY_PARAM_get_depth(ctx->param);
1484}
1485
1486int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1487 return ctx->default_verify_callback;
0f113f3e
MC		 1488}
1489
1490void SSL_set_verify(SSL *s, int mode,
1491 int (*callback) (int ok, X509_STORE_CTX *ctx))
1492{
1493 s->verify_mode = mode;
1494 if (callback != NULL)
1495 s->verify_callback = callback;
1496}
1497
1498void SSL_set_verify_depth(SSL *s, int depth)
1499{
1500 X509_VERIFY_PARAM_set_depth(s->param, depth);
1501}
1502
1503void SSL_set_read_ahead(SSL *s, int yes)
1504{
52e1d7b1 1505 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1506}
d02b48c6 1507
0821bcd4 1508int SSL_get_read_ahead(const SSL *s)
0f113f3e 1509{
52e1d7b1 1510 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1511}
d02b48c6 1512
0821bcd4 1513int SSL_pending(const SSL *s)
0f113f3e 1514{
8b0e934a
MC		 1515 size_t pending = s->method->ssl_pending(s);
1516
0f113f3e
MC		 1517 /*
1518 * SSL_pending cannot work properly if read-ahead is enabled
1519 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1520 * impossible to fix since SSL_pending cannot report errors that may be
1521 * observed while scanning the new data. (Note that SSL_pending() is
1522 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1523 *
1524 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1525 * we just return INT_MAX.
0f113f3e 1526 */
348240c6 1527 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1528}
d02b48c6 1529
49580f25
MC		 1530int SSL_has_pending(const SSL *s)
1531{
1532 /*
1533 * Similar to SSL_pending() but returns a 1 to indicate that we have
1534 * unprocessed data available or 0 otherwise (as opposed to the number of
1535 * bytes available). Unlike SSL_pending() this will take into account
1536 * read_ahead data. A 1 return simply indicates that we have unprocessed
1537 * data. That data may not result in any application data, or we may fail
1538 * to parse the records for some reason.
1539 */
b8c49611 1540 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1541 return 1;
1542
1543 return RECORD_LAYER_read_pending(&s->rlayer);
1544}
1545
0821bcd4 1546X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1547{
1548 X509 *r;
d02b48c6 1549
0f113f3e
MC		 1550 if ((s == NULL) || (s->session == NULL))
1551 r = NULL;
1552 else
1553 r = s->session->peer;
d02b48c6 1554
0f113f3e 1555 if (r == NULL)
26a7d938 1556 return r;
d02b48c6 1557
05f0fb9f 1558 X509_up_ref(r);
0f113f3e 1559
26a7d938 1560 return r;
0f113f3e 1561}
d02b48c6 1562
0821bcd4 1563STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1564{
1565 STACK_OF(X509) *r;
1566
c34b0f99 1567 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1568 r = NULL;
1569 else
c34b0f99 1570 r = s->session->peer_chain;
0f113f3e
MC		 1571
1572 /*
1573 * If we are a client, cert_chain includes the peer's own certificate; if
1574 * we are a server, it does not.
1575 */
1576
26a7d938 1577 return r;
0f113f3e
MC		 1578}
1579
1580/*
1581 * Now in theory, since the calling process own 't' it should be safe to
1582 * modify. We need to be able to read f without being hassled
1583 */
17dd65e6 1584int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1585{
16203f7b 1586 int i;
0f113f3e 1587 /* Do we need to to SSL locking? */
61986d32 1588 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1589 return 0;
69f68237 1590 }
0f113f3e
MC		 1591
1592 /*
87d9cafa 1593 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1594 */
1595 if (t->method != f->method) {
919ba009
VD		 1596 t->method->ssl_free(t);
1597 t->method = f->method;
1598 if (t->method->ssl_new(t) == 0)
1599 return 0;
0f113f3e
MC		 1600 }
1601
2f545ae4 1602 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1603 ssl_cert_free(t->cert);
1604 t->cert = f->cert;
348240c6 1605 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1606 return 0;
69f68237 1607 }
17dd65e6
MC		 1608
1609 return 1;
0f113f3e 1610}
d02b48c6 1611
58964a49 1612/* Fix this so it checks all the valid key/cert options */
0821bcd4 1613int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1614{
a230b26e
EK		 1615 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1616 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1617 return 0;
0f113f3e
MC		 1618 }
1619 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1620 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1621 return 0;
0f113f3e 1622 }
26a7d938
K		 1623 return X509_check_private_key
1624 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1625}
d02b48c6 1626
58964a49 1627/* Fix this function so that it takes an optional type parameter */
0821bcd4 1628int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1629{
1630 if (ssl == NULL) {
1631 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1632 return 0;
0f113f3e 1633 }
0f113f3e
MC		 1634 if (ssl->cert->key->x509 == NULL) {
1635 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1636 return 0;
0f113f3e
MC		 1637 }
1638 if (ssl->cert->key->privatekey == NULL) {
1639 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1640 return 0;
0f113f3e 1641 }
26a7d938
K		 1642 return X509_check_private_key(ssl->cert->key->x509,
1643 ssl->cert->key->privatekey);
0f113f3e 1644}
d02b48c6 1645
07bbc92c
MC		 1646int SSL_waiting_for_async(SSL *s)
1647{
e8aa8b6c 1648 if (s->job)
82676094
MC		 1649 return 1;
1650
07bbc92c
MC		 1651 return 0;
1652}
1653
ff75a257 1654int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1655{
ff75a257
MC		 1656 ASYNC_WAIT_CTX *ctx = s->waitctx;
1657
1658 if (ctx == NULL)
1659 return 0;
1660 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1661}
f4da39d2 1662
ff75a257
MC		 1663int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1664 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1665{
1666 ASYNC_WAIT_CTX *ctx = s->waitctx;
1667
1668 if (ctx == NULL)
1669 return 0;
1670 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1671 numdelfds);
f4da39d2
MC		 1672}
1673
9f5a87fd
PY		 1674int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1675{
1676 ctx->async_cb = callback;
1677 return 1;
1678}
1679
1680int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1681{
1682 ctx->async_cb_arg = arg;
1683 return 1;
1684}
1685
1686int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1687{
1688 s->async_cb = callback;
1689 return 1;
1690}
1691
1692int SSL_set_async_callback_arg(SSL *s, void *arg)
1693{
1694 s->async_cb_arg = arg;
1695 return 1;
1696}
1697
1698int SSL_get_async_status(SSL *s, int *status)
1699{
1700 ASYNC_WAIT_CTX *ctx = s->waitctx;
1701
1702 if (ctx == NULL)
1703 return 0;
1704 *status = ASYNC_WAIT_CTX_get_status(ctx);
1705 return 1;
1706}
1707
4f43d0e7 1708int SSL_accept(SSL *s)
0f113f3e 1709{
c4c32155 1710 if (s->handshake_func == NULL) {
0f113f3e
MC		 1711 /* Not properly initialized yet */
1712 SSL_set_accept_state(s);
07bbc92c 1713 }
add2f5ca
MC		 1714
1715 return SSL_do_handshake(s);
0f113f3e 1716}
d02b48c6 1717
4f43d0e7 1718int SSL_connect(SSL *s)
0f113f3e 1719{
c4c32155 1720 if (s->handshake_func == NULL) {
0f113f3e
MC		 1721 /* Not properly initialized yet */
1722 SSL_set_connect_state(s);
add2f5ca 1723 }
b31b04d9 1724
add2f5ca 1725 return SSL_do_handshake(s);
0f113f3e 1726}
d02b48c6 1727
0821bcd4 1728long SSL_get_default_timeout(const SSL *s)
0f113f3e 1729{
26a7d938 1730 return s->method->get_timeout();
0f113f3e
MC		 1731}
1732
9f5a87fd
PY		 1733static int ssl_async_wait_ctx_cb(void *arg)
1734{
1735 SSL *s = (SSL *)arg;
1736
1737 return s->async_cb(s, s->async_cb_arg);
1738}
1739
7fecbf6f 1740static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1741 int (*func) (void *))
1742{
add2f5ca 1743 int ret;
ff75a257
MC		 1744 if (s->waitctx == NULL) {
1745 s->waitctx = ASYNC_WAIT_CTX_new();
1746 if (s->waitctx == NULL)
1747 return -1;
9f5a87fd
PY		 1748 if (s->async_cb != NULL
1749 && !ASYNC_WAIT_CTX_set_callback
1750 (s->waitctx, ssl_async_wait_ctx_cb, s))
1751 return -1;
ff75a257 1752 }
e8aa8b6c 1753 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1754 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1755 case ASYNC_ERR:
1756 s->rwstate = SSL_NOTHING;
7fecbf6f 1757 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1758 return -1;
1759 case ASYNC_PAUSE:
1760 s->rwstate = SSL_ASYNC_PAUSED;
1761 return -1;
fc7f190c
MC		 1762 case ASYNC_NO_JOBS:
1763 s->rwstate = SSL_ASYNC_NO_JOBS;
1764 return -1;
add2f5ca
MC		 1765 case ASYNC_FINISH:
1766 s->job = NULL;
1767 return ret;
1768 default:
1769 s->rwstate = SSL_NOTHING;
7fecbf6f 1770 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1771 /* Shouldn't happen */
1772 return -1;
1773 }
1774}
07bbc92c 1775
add2f5ca 1776static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1777{
1778 struct ssl_async_args *args;
1779 SSL *s;
1780 void *buf;
348240c6 1781 size_t num;
07bbc92c
MC		 1782
1783 args = (struct ssl_async_args *)vargs;
1784 s = args->s;
1785 buf = args->buf;
1786 num = args->num;
ec447924
MC		 1787 switch (args->type) {
1788 case READFUNC:
7ee8627f 1789 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1790 case WRITEFUNC:
7ee8627f 1791 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1792 case OTHERFUNC:
1793 return args->f.func_other(s);
1794 }
1795 return -1;
07bbc92c
MC		 1796}
1797
4ee7d3f9 1798int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1799{
c4c32155 1800 if (s->handshake_func == NULL) {
4ee7d3f9 1801 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1802 return -1;
1803 }
1804
1805 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1806 s->rwstate = SSL_NOTHING;
4ee7d3f9 1807 return 0;
0f113f3e 1808 }
07bbc92c 1809
564547e4
MC		 1810 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1811 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1812 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1813 return 0;
1814 }
564547e4
MC		 1815 /*
1816 * If we are a client and haven't received the ServerHello etc then we
1817 * better do that
1818 */
1819 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1820
e8aa8b6c 1821 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1822 struct ssl_async_args args;
eda75751 1823 int ret;
add2f5ca
MC		 1824
1825 args.s = s;
1826 args.buf = buf;
1827 args.num = num;
ec447924
MC		 1828 args.type = READFUNC;
1829 args.f.func_read = s->method->ssl_read;
add2f5ca 1830
eda75751 1831 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1832 *readbytes = s->asyncrw;
eda75751 1833 return ret;
07bbc92c 1834 } else {
54105ddd 1835 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1836 }
0f113f3e
MC		 1837}
1838
4ee7d3f9 1839int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1840{
1841 int ret;
54105ddd 1842 size_t readbytes;
eda75751
MC		 1843
1844 if (num < 0) {
4ee7d3f9 1845 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1846 return -1;
1847 }
1848
4ee7d3f9 1849 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1850
1851 /*
1852 * The cast is safe here because ret should be <= INT_MAX because num is
1853 * <= INT_MAX
1854 */
1855 if (ret > 0)
54105ddd 1856 ret = (int)readbytes;
eda75751
MC		 1857
1858 return ret;
1859}
1860
4ee7d3f9
KR		 1861int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1862{
1863 int ret = ssl_read_internal(s, buf, num, readbytes);
1864
1865 if (ret < 0)
1866 ret = 0;
1867 return ret;
1868}
1869
f533fbd4 1870int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1871{
1872 int ret;
1873
1874 if (!s->server) {
f533fbd4
MC		 1875 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1876 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1877 }
1878
d781d247
MC		 1879 switch (s->early_data_state) {
1880 case SSL_EARLY_DATA_NONE:
1881 if (!SSL_in_before(s)) {
f533fbd4
MC		 1882 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1883 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1884 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1885 }
1886 /* fall through */
1887
1888 case SSL_EARLY_DATA_ACCEPT_RETRY:
1889 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1890 ret = SSL_accept(s);
1891 if (ret <= 0) {
1892 /* NBIO or error */
1893 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1894 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1895 }
1896 /* fall through */
1897
1898 case SSL_EARLY_DATA_READ_RETRY:
1899 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1900 s->early_data_state = SSL_EARLY_DATA_READING;
1901 ret = SSL_read_ex(s, buf, num, readbytes);
1902 /*
ef6c191b
MC		 1903 * State machine will update early_data_state to
1904 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1905 * message
d781d247
MC		 1906 */
1907 if (ret > 0 || (ret <= 0 && s->early_data_state
1908 != SSL_EARLY_DATA_FINISHED_READING)) {
1909 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1910 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1911 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1912 }
1913 } else {
1914 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1915 }
1916 *readbytes = 0;
f533fbd4 1917 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1918
1919 default:
f533fbd4
MC		 1920 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1921 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1922 }
1923}
1924
f5b519c4 1925int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1926{
1927 return s->ext.early_data;
1928}
1929
4ee7d3f9 1930static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1931{
c4c32155 1932 if (s->handshake_func == NULL) {
4ee7d3f9 1933 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1934 return -1;
1935 }
1936
1937 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1938 return 0;
0f113f3e 1939 }
e8aa8b6c 1940 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1941 struct ssl_async_args args;
eda75751 1942 int ret;
0f113f3e 1943
add2f5ca
MC		 1944 args.s = s;
1945 args.buf = buf;
1946 args.num = num;
ec447924
MC		 1947 args.type = READFUNC;
1948 args.f.func_read = s->method->ssl_peek;
07bbc92c 1949
eda75751 1950 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1951 *readbytes = s->asyncrw;
eda75751 1952 return ret;
add2f5ca 1953 } else {
54105ddd 1954 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1955 }
07bbc92c
MC		 1956}
1957
4ee7d3f9 1958int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1959{
1960 int ret;
4ee7d3f9 1961 size_t readbytes;
7ee8627f
MC		 1962
1963 if (num < 0) {
4ee7d3f9 1964 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1965 return -1;
1966 }
1967
4ee7d3f9 1968 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1969
1970 /*
1971 * The cast is safe here because ret should be <= INT_MAX because num is
1972 * <= INT_MAX
1973 */
1974 if (ret > 0)
4ee7d3f9 1975 ret = (int)readbytes;
7ee8627f
MC		 1976
1977 return ret;
1978}
1979
4ee7d3f9
KR		 1980
1981int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1982{
1983 int ret = ssl_peek_internal(s, buf, num, readbytes);
1984
1985 if (ret < 0)
1986 ret = 0;
1987 return ret;
1988}
1989
1990int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1991{
c4c32155 1992 if (s->handshake_func == NULL) {
4ee7d3f9 1993 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1994 return -1;
1995 }
1996
1997 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1998 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1999 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2000 return -1;
0f113f3e 2001 }
07bbc92c 2002
ef6c191b 2003 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 2004 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2005 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 2006 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 2007 return 0;
0a5ece5b 2008 }
564547e4
MC		 2009 /* If we are a client and haven't sent the Finished we better do that */
2010 ossl_statem_check_finish_init(s, 1);
49e7fe12 2011
e8aa8b6c 2012 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 2013 int ret;
add2f5ca
MC		 2014 struct ssl_async_args args;
2015
2016 args.s = s;
2017 args.buf = (void *)buf;
2018 args.num = num;
ec447924
MC		 2019 args.type = WRITEFUNC;
2020 args.f.func_write = s->method->ssl_write;
add2f5ca 2021
7ee8627f
MC		 2022 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2023 *written = s->asyncrw;
2024 return ret;
07bbc92c 2025 } else {
7ee8627f 2026 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2027 }
0f113f3e 2028}
d02b48c6 2029
7c3a7561
BP		 2030ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2031{
2032 ossl_ssize_t ret;
2033
2034 if (s->handshake_func == NULL) {
2035 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2036 return -1;
2037 }
2038
2039 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2040 s->rwstate = SSL_NOTHING;
2041 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2042 return -1;
2043 }
2044
2045 if (!BIO_get_ktls_send(s->wbio)) {
2046 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2047 return -1;
2048 }
2049
2050 /* If we have an alert to send, lets send it */
2051 if (s->s3.alert_dispatch) {
2052 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2053 if (ret <= 0) {
2054 /* SSLfatal() already called if appropriate */
2055 return ret;
2056 }
2057 /* if it went, fall through and send more stuff */
2058 }
2059
2060 s->rwstate = SSL_WRITING;
2061 if (BIO_flush(s->wbio) <= 0) {
2062 if (!BIO_should_retry(s->wbio)) {
2063 s->rwstate = SSL_NOTHING;
2064 } else {
2065#ifdef EAGAIN
2066 set_sys_error(EAGAIN);
2067#endif
2068 }
2069 return -1;
2070 }
2071
712c0942
JB		 2072#ifdef OPENSSL_NO_KTLS
2073 ERR_raise_data(ERR_LIB_SYS, ERR_R_INTERNAL_ERROR, "calling sendfile()");
2074 return -1;
7c3a7561 2075#else
712c0942 2076 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
7c3a7561
BP		 2077 if (ret < 0) {
2078#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2079 if ((get_last_sys_error() == EAGAIN) ||
2080 (get_last_sys_error() == EINTR) ||
2081 (get_last_sys_error() == EBUSY))
2082 BIO_set_retry_write(s->wbio);
2083 else
2084#endif
7c3a7561 2085 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2086 return ret;
2087 }
2088 s->rwstate = SSL_NOTHING;
2089 return ret;
712c0942 2090#endif
7c3a7561
BP		 2091}
2092
4ee7d3f9
KR		 2093int SSL_write(SSL *s, const void *buf, int num)
2094{
2095 int ret;
2096 size_t written;
2097
2098 if (num < 0) {
2099 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2100 return -1;
2101 }
2102
2103 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2104
2105 /*
2106 * The cast is safe here because ret should be <= INT_MAX because num is
2107 * <= INT_MAX
2108 */
2109 if (ret > 0)
2110 ret = (int)written;
2111
2112 return ret;
2113}
2114
2115int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2116{
2117 int ret = ssl_write_internal(s, buf, num, written);
2118
2119 if (ret < 0)
2120 ret = 0;
2121 return ret;
2122}
2123
0665b4ed 2124int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2125{
a0cb628b 2126 int ret, early_data_state;
2a8db717 2127 size_t writtmp;
f7414b08 2128 uint32_t partialwrite;
49e7fe12 2129
49e7fe12
MC		 2130 switch (s->early_data_state) {
2131 case SSL_EARLY_DATA_NONE:
09f28874
MC		 2132 if (s->server
2133 || !SSL_in_before(s)
add8d0e9
MC		 2134 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2135 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 2136 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2137 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2138 return 0;
2139 }
2140 /* fall through */
2141
2142 case SSL_EARLY_DATA_CONNECT_RETRY:
2143 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2144 ret = SSL_connect(s);
2145 if (ret <= 0) {
2146 /* NBIO or error */
2147 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2148 return 0;
2149 }
2150 /* fall through */
2151
2152 case SSL_EARLY_DATA_WRITE_RETRY:
2153 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2154 /*
2155 * We disable partial write for early data because we don't keep track
2156 * of how many bytes we've written between the SSL_write_ex() call and
2157 * the flush if the flush needs to be retried)
2158 */
2159 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2160 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2161 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2162 s->mode |= partialwrite;
2a8db717
MC		 2163 if (!ret) {
2164 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2165 return ret;
2166 }
2167 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2168 /* fall through */
2169
2170 case SSL_EARLY_DATA_WRITE_FLUSH:
2171 /* The buffering BIO is still in place so we need to flush it */
2172 if (statem_flush(s) != 1)
2173 return 0;
2a8db717 2174 *written = num;
49e7fe12 2175 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2176 return 1;
49e7fe12 2177
116d0da5 2178 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2179 case SSL_EARLY_DATA_READ_RETRY:
2180 early_data_state = s->early_data_state;
09f28874
MC		 2181 /* We are a server writing to an unauthenticated client */
2182 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2183 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2184 /* The buffering BIO is still in place */
2185 if (ret)
2186 (void)BIO_flush(s->wbio);
bbea9f2c 2187 s->early_data_state = early_data_state;
09f28874
MC		 2188 return ret;
2189
49e7fe12 2190 default:
09f28874 2191 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2192 return 0;
2193 }
2194}
2195
4f43d0e7 2196int SSL_shutdown(SSL *s)
0f113f3e
MC		 2197{
2198 /*
2199 * Note that this function behaves differently from what one might
2200 * expect. Return values are 0 for no success (yet), 1 for success; but
2201 * calling it once is usually not enough, even if blocking I/O is used
2202 * (see ssl3_shutdown).
2203 */
2204
c4c32155 2205 if (s->handshake_func == NULL) {
0f113f3e
MC		 2206 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2207 return -1;
2208 }
2209
64f9f406 2210 if (!SSL_in_init(s)) {
e8aa8b6c 2211 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2212 struct ssl_async_args args;
ec447924 2213
64f9f406
MC		 2214 args.s = s;
2215 args.type = OTHERFUNC;
2216 args.f.func_other = s->method->ssl_shutdown;
ec447924 2217
64f9f406
MC		 2218 return ssl_start_async_job(s, &args, ssl_io_intern);
2219 } else {
2220 return s->method->ssl_shutdown(s);
2221 }
ec447924 2222 } else {
64f9f406
MC		 2223 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2224 return -1;
ec447924 2225 }
0f113f3e 2226}
d02b48c6 2227
4fbfe86a 2228int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2229{
f14afcaa 2230 /*
a9998e2f 2231 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2232 * negotiated, and that it is appropriate to call SSL_key_update() instead
2233 * of SSL_renegotiate().
2234 */
44c04a2e
MC		 2235 if (!SSL_IS_TLS13(s)) {
2236 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2237 return 0;
2238 }
2239
2240 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2241 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2242 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2243 return 0;
2244 }
2245
2246 if (!SSL_is_init_finished(s)) {
2247 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2248 return 0;
2249 }
2250
2251 ossl_statem_set_in_init(s, 1);
44c04a2e 2252 s->key_update = updatetype;
44c04a2e
MC		 2253 return 1;
2254}
2255
3499327b 2256int SSL_get_key_update_type(const SSL *s)
53d1d07d
MC		 2257{
2258 return s->key_update;
2259}
2260
4f43d0e7 2261int SSL_renegotiate(SSL *s)
0f113f3e 2262{
44c04a2e
MC		 2263 if (SSL_IS_TLS13(s)) {
2264 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2265 return 0;
44c04a2e 2266 }
cda6b998 2267
db0f35dd
TS		 2268 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2269 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2270 return 0;
2271 }
44959ee4 2272
db0f35dd 2273 s->renegotiate = 1;
0f113f3e 2274 s->new_session = 1;
44959ee4 2275
26a7d938 2276 return s->method->ssl_renegotiate(s);
0f113f3e 2277}
d02b48c6 2278
44959ee4 2279int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2280{
db0f35dd
TS		 2281 if (SSL_IS_TLS13(s)) {
2282 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2283 return 0;
db0f35dd 2284 }
cda6b998 2285
db0f35dd
TS		 2286 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2287 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2288 return 0;
2289 }
c519e89f 2290
db0f35dd 2291 s->renegotiate = 1;
0f113f3e 2292 s->new_session = 0;
c519e89f 2293
26a7d938 2294 return s->method->ssl_renegotiate(s);
0f113f3e 2295}
44959ee4 2296
3499327b 2297int SSL_renegotiate_pending(const SSL *s)
0f113f3e
MC		 2298{
2299 /*
2300 * becomes true when negotiation is requested; false again once a
2301 * handshake has finished
2302 */
2303 return (s->renegotiate != 0);
2304}
2305
3bfacb5f
BK		 2306int SSL_new_session_ticket(SSL *s)
2307{
35774d55
BK		 2308 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2309 || !SSL_IS_TLS13(s))
2310 return 0;
2311 s->ext.extra_tickets_expected++;
2312 return 1;
3bfacb5f
BK		 2313}
2314
0f113f3e
MC		 2315long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2316{
2317 long l;
2318
2319 switch (cmd) {
2320 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2321 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2322 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2323 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2324 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2325 return l;
0f113f3e
MC		 2326
2327 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2328 s->msg_callback_arg = parg;
2329 return 1;
2330
0f113f3e
MC		 2331 case SSL_CTRL_MODE:
2332 return (s->mode |= larg);
2333 case SSL_CTRL_CLEAR_MODE:
2334 return (s->mode &= ~larg);
2335 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2336 return (long)s->max_cert_list;
0f113f3e 2337 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2338 if (larg < 0)
2339 return 0;
2340 l = (long)s->max_cert_list;
2341 s->max_cert_list = (size_t)larg;
2342 return l;
0f113f3e
MC		 2343 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2344 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2345 return 0;
50ec7505
BP		 2346#ifndef OPENSSL_NO_KTLS
2347 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2348 return 0;
2349#endif /* OPENSSL_NO_KTLS */
0f113f3e 2350 s->max_send_fragment = larg;
d102d9df
MC		 2351 if (s->max_send_fragment < s->split_send_fragment)
2352 s->split_send_fragment = s->max_send_fragment;
2353 return 1;
2354 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2355 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2356 return 0;
2357 s->split_send_fragment = larg;
0f113f3e 2358 return 1;
d102d9df
MC		 2359 case SSL_CTRL_SET_MAX_PIPELINES:
2360 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2361 return 0;
2362 s->max_pipelines = larg;
94777c9c
MC		 2363 if (larg > 1)
2364 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2365 return 1;
0f113f3e 2366 case SSL_CTRL_GET_RI_SUPPORT:
555cbb32 2367 return s->s3.send_connection_binding;
0f113f3e
MC		 2368 case SSL_CTRL_CERT_FLAGS:
2369 return (s->cert->cert_flags |= larg);
2370 case SSL_CTRL_CLEAR_CERT_FLAGS:
2371 return (s->cert->cert_flags &= ~larg);
2372
2373 case SSL_CTRL_GET_RAW_CIPHERLIST:
2374 if (parg) {
555cbb32 2375 if (s->s3.tmp.ciphers_raw == NULL)
0f113f3e 2376 return 0;
555cbb32
TS		 2377 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2378 return (int)s->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2379 } else {
2380 return TLS_CIPHER_LEN;
2381 }
c5364614 2382 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2383 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2384 return -1;
dccd20d1 2385 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2386 return 1;
2387 else
2388 return 0;
7946ab33 2389 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2390 return ssl_check_allowed_versions(larg, s->max_proto_version)
2391 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2392 &s->min_proto_version);
3edabd3c
CH		 2393 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2394 return s->min_proto_version;
7946ab33 2395 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2396 return ssl_check_allowed_versions(s->min_proto_version, larg)
2397 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2398 &s->max_proto_version);
3edabd3c
CH		 2399 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2400 return s->max_proto_version;
0f113f3e 2401 default:
26a7d938 2402 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2403 }
2404}
2405
2406long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2407{
2408 switch (cmd) {
2409 case SSL_CTRL_SET_MSG_CALLBACK:
2410 s->msg_callback = (void (*)
2411 (int write_p, int version, int content_type,
2412 const void *buf, size_t len, SSL *ssl,
2413 void *arg))(fp);
2414 return 1;
2415
2416 default:
26a7d938 2417 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2418 }
2419}
d3442bc7 2420
3c1d6bbc 2421LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2422{
2423 return ctx->sessions;
2424}
2425
2426long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2427{
2428 long l;
2429 /* For some cases with ctx == NULL perform syntax checks */
2430 if (ctx == NULL) {
2431 switch (cmd) {
14536c8c 2432#ifndef OPENSSL_NO_EC
de4d764e
MC		 2433 case SSL_CTRL_SET_GROUPS_LIST:
2434 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2435#endif
2436 case SSL_CTRL_SET_SIGALGS_LIST:
2437 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2438 return tls1_set_sigalgs_list(NULL, parg, 0);
2439 default:
2440 return 0;
2441 }
2442 }
2443
2444 switch (cmd) {
2445 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2446 return ctx->read_ahead;
0f113f3e
MC		 2447 case SSL_CTRL_SET_READ_AHEAD:
2448 l = ctx->read_ahead;
2449 ctx->read_ahead = larg;
26a7d938 2450 return l;
0f113f3e
MC		 2451
2452 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2453 ctx->msg_callback_arg = parg;
2454 return 1;
2455
2456 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2457 return (long)ctx->max_cert_list;
0f113f3e 2458 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2459 if (larg < 0)
2460 return 0;
2461 l = (long)ctx->max_cert_list;
2462 ctx->max_cert_list = (size_t)larg;
2463 return l;
0f113f3e
MC		 2464
2465 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2466 if (larg < 0)
2467 return 0;
2468 l = (long)ctx->session_cache_size;
2469 ctx->session_cache_size = (size_t)larg;
2470 return l;
0f113f3e 2471 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2472 return (long)ctx->session_cache_size;
0f113f3e
MC		 2473 case SSL_CTRL_SET_SESS_CACHE_MODE:
2474 l = ctx->session_cache_mode;
2475 ctx->session_cache_mode = larg;
26a7d938 2476 return l;
0f113f3e 2477 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2478 return ctx->session_cache_mode;
0f113f3e
MC		 2479
2480 case SSL_CTRL_SESS_NUMBER:
26a7d938 2481 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2482 case SSL_CTRL_SESS_CONNECT:
9ef9088c 2483 return tsan_load(&ctx->stats.sess_connect);
0f113f3e 2484 case SSL_CTRL_SESS_CONNECT_GOOD:
9ef9088c 2485 return tsan_load(&ctx->stats.sess_connect_good);
0f113f3e 2486 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
9ef9088c 2487 return tsan_load(&ctx->stats.sess_connect_renegotiate);
0f113f3e 2488 case SSL_CTRL_SESS_ACCEPT:
9ef9088c 2489 return tsan_load(&ctx->stats.sess_accept);
0f113f3e 2490 case SSL_CTRL_SESS_ACCEPT_GOOD:
9ef9088c 2491 return tsan_load(&ctx->stats.sess_accept_good);
0f113f3e 2492 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
9ef9088c 2493 return tsan_load(&ctx->stats.sess_accept_renegotiate);
0f113f3e 2494 case SSL_CTRL_SESS_HIT:
9ef9088c 2495 return tsan_load(&ctx->stats.sess_hit);
0f113f3e 2496 case SSL_CTRL_SESS_CB_HIT:
9ef9088c 2497 return tsan_load(&ctx->stats.sess_cb_hit);
0f113f3e 2498 case SSL_CTRL_SESS_MISSES:
9ef9088c 2499 return tsan_load(&ctx->stats.sess_miss);
0f113f3e 2500 case SSL_CTRL_SESS_TIMEOUTS:
9ef9088c 2501 return tsan_load(&ctx->stats.sess_timeout);
0f113f3e 2502 case SSL_CTRL_SESS_CACHE_FULL:
9ef9088c 2503 return tsan_load(&ctx->stats.sess_cache_full);
0f113f3e
MC		 2504 case SSL_CTRL_MODE:
2505 return (ctx->mode |= larg);
2506 case SSL_CTRL_CLEAR_MODE:
2507 return (ctx->mode &= ~larg);
2508 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2509 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2510 return 0;
2511 ctx->max_send_fragment = larg;
d102d9df 2512 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2513 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2514 return 1;
d102d9df 2515 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2516 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2517 return 0;
2518 ctx->split_send_fragment = larg;
2519 return 1;
2520 case SSL_CTRL_SET_MAX_PIPELINES:
2521 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2522 return 0;
2523 ctx->max_pipelines = larg;
07077415 2524 return 1;
0f113f3e
MC		 2525 case SSL_CTRL_CERT_FLAGS:
2526 return (ctx->cert->cert_flags |= larg);
2527 case SSL_CTRL_CLEAR_CERT_FLAGS:
2528 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2529 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2530 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2531 && ssl_set_version_bound(ctx->method->version, (int)larg,
2532 &ctx->min_proto_version);
3edabd3c
CH		 2533 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2534 return ctx->min_proto_version;
7946ab33 2535 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2536 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2537 && ssl_set_version_bound(ctx->method->version, (int)larg,
2538 &ctx->max_proto_version);
3edabd3c
CH		 2539 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2540 return ctx->max_proto_version;
0f113f3e 2541 default:
26a7d938 2542 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2543 }
2544}
2545
2546long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2547{
2548 switch (cmd) {
2549 case SSL_CTRL_SET_MSG_CALLBACK:
2550 ctx->msg_callback = (void (*)
2551 (int write_p, int version, int content_type,
2552 const void *buf, size_t len, SSL *ssl,
2553 void *arg))(fp);
2554 return 1;
2555
2556 default:
26a7d938 2557 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2558 }
2559}
d3442bc7 2560
ccd86b68 2561int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2562{
90d9e49a
DSH		 2563 if (a->id > b->id)
2564 return 1;
2565 if (a->id < b->id)
2566 return -1;
2567 return 0;
0f113f3e
MC		 2568}
2569
2570int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2571 const SSL_CIPHER *const *bp)
2572{
90d9e49a
DSH		 2573 if ((*ap)->id > (*bp)->id)
2574 return 1;
2575 if ((*ap)->id < (*bp)->id)
2576 return -1;
2577 return 0;
0f113f3e 2578}
d02b48c6 2579
4f43d0e7 2580/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2581 * preference */
0821bcd4 2582STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2583{
2584 if (s != NULL) {
2585 if (s->cipher_list != NULL) {
26a7d938 2586 return s->cipher_list;
0f113f3e 2587 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2588 return s->ctx->cipher_list;
0f113f3e
MC		 2589 }
2590 }
26a7d938 2591 return NULL;
0f113f3e
MC		 2592}
2593
831eef2c
NM		 2594STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2595{
eee2a6a7 2596 if ((s == NULL) || !s->server)
831eef2c 2597 return NULL;
eee2a6a7 2598 return s->peer_ciphers;
831eef2c
NM		 2599}
2600
8b8e5bed 2601STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2602{
2603 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2604 int i;
1d0c08b4 2605
0f113f3e
MC		 2606 ciphers = SSL_get_ciphers(s);
2607 if (!ciphers)
2608 return NULL;
1d0c08b4
MC		 2609 if (!ssl_set_client_disabled(s))
2610 return NULL;
0f113f3e
MC		 2611 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2612 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2613 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2614 if (!sk)
2615 sk = sk_SSL_CIPHER_new_null();
2616 if (!sk)
2617 return NULL;
2618 if (!sk_SSL_CIPHER_push(sk, c)) {
2619 sk_SSL_CIPHER_free(sk);
2620 return NULL;
2621 }
2622 }
2623 }
2624 return sk;
2625}
8b8e5bed 2626
4f43d0e7 2627/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2628 * algorithm id */
f73e07cf 2629STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2630{
2631 if (s != NULL) {
2632 if (s->cipher_list_by_id != NULL) {
26a7d938 2633 return s->cipher_list_by_id;
0f113f3e 2634 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2635 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2636 }
2637 }
26a7d938 2638 return NULL;
0f113f3e 2639}
d02b48c6 2640
4f43d0e7 2641/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2642const char *SSL_get_cipher_list(const SSL *s, int n)
2643{
4a640fb6 2644 const SSL_CIPHER *c;
0f113f3e
MC		 2645 STACK_OF(SSL_CIPHER) *sk;
2646
2647 if (s == NULL)
26a7d938 2648 return NULL;
0f113f3e
MC		 2649 sk = SSL_get_ciphers(s);
2650 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2651 return NULL;
0f113f3e
MC		 2652 c = sk_SSL_CIPHER_value(sk, n);
2653 if (c == NULL)
26a7d938
K		 2654 return NULL;
2655 return c->name;
0f113f3e 2656}
d02b48c6 2657
9d5ac953
KY		 2658/** return a STACK of the ciphers available for the SSL_CTX and in order of
2659 * preference */
2660STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2661{
2662 if (ctx != NULL)
2663 return ctx->cipher_list;
2664 return NULL;
2665}
2666
3c83c5ba
SR		 2667/*
2668 * Distinguish between ciphers controlled by set_ciphersuite() and
2669 * set_cipher_list() when counting.
2670 */
2671static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2672{
2673 int i, num = 0;
2674 const SSL_CIPHER *c;
2675
2676 if (sk == NULL)
2677 return 0;
2678 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2679 c = sk_SSL_CIPHER_value(sk, i);
2680 if (c->min_tls >= TLS1_3_VERSION)
2681 continue;
2682 num++;
2683 }
2684 return num;
2685}
2686
25f923dd 2687/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2688int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2689{
2690 STACK_OF(SSL_CIPHER) *sk;
2691
f865b081
MC		 2692 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2693 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2694 ctx->cert);
0f113f3e
MC		 2695 /*
2696 * ssl_create_cipher_list may return an empty stack if it was unable to
2697 * find a cipher matching the given rule string (for example if the rule
2698 * string specifies a cipher which has been disabled). This is not an
2699 * error as far as ssl_create_cipher_list is concerned, and hence
2700 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2701 */
2702 if (sk == NULL)
2703 return 0;
3c83c5ba 2704 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2705 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2706 return 0;
2707 }
2708 return 1;
2709}
d02b48c6 2710
4f43d0e7 2711/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2712int SSL_set_cipher_list(SSL *s, const char *str)
2713{
2714 STACK_OF(SSL_CIPHER) *sk;
2715
f865b081
MC		 2716 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2717 &s->cipher_list, &s->cipher_list_by_id, str,
2718 s->cert);
0f113f3e
MC		 2719 /* see comment in SSL_CTX_set_cipher_list */
2720 if (sk == NULL)
2721 return 0;
3c83c5ba 2722 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2723 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2724 return 0;
2725 }
2726 return 1;
2727}
d02b48c6 2728
a216df59 2729char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 2730{
2731 char *p;
a216df59 2732 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 2733 const SSL_CIPHER *c;
0f113f3e
MC		 2734 int i;
2735
a216df59 2736 if (!s->server
eee2a6a7 2737 || s->peer_ciphers == NULL
a216df59 2738 || size < 2)
26a7d938 2739 return NULL;
0f113f3e
MC		 2740
2741 p = buf;
eee2a6a7 2742 clntsk = s->peer_ciphers;
a216df59
MC		 2743 srvrsk = SSL_get_ciphers(s);
2744 if (clntsk == NULL || srvrsk == NULL)
2745 return NULL;
0f113f3e 2746
a216df59 2747 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 2748 return NULL;
2749
a216df59 2750 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 2751 int n;
2752
a216df59
MC		 2753 c = sk_SSL_CIPHER_value(clntsk, i);
2754 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2755 continue;
2756
0f113f3e 2757 n = strlen(c->name);
a216df59 2758 if (n + 1 > size) {
0f113f3e
MC		 2759 if (p != buf)
2760 --p;
2761 *p = '\0';
2762 return buf;
2763 }
4cacc9d5 2764 strcpy(p, c->name);
0f113f3e
MC		 2765 p += n;
2766 *(p++) = ':';
a216df59 2767 size -= n + 1;
0f113f3e
MC		 2768 }
2769 p[-1] = '\0';
26a7d938 2770 return buf;
0f113f3e
MC		 2771}
2772
7955c1f1
MC		 2773/**
2774 * Return the requested servername (SNI) value. Note that the behaviour varies
2775 * depending on:
2776 * - whether this is called by the client or the server,
2777 * - if we are before or during/after the handshake,
2778 * - if a resumption or normal handshake is being attempted/has occurred
2779 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2780 *
2781 * Note that only the host_name type is defined (RFC 3546).
ed3883d2 2782 */
f1fd4544 2783const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e 2784{
7955c1f1
MC		 2785 /*
2786 * If we don't know if we are the client or the server yet then we assume
2787 * client.
2788 */
2789 int server = s->handshake_func == NULL ? 0 : s->server;
0f113f3e
MC		 2790 if (type != TLSEXT_NAMETYPE_host_name)
2791 return NULL;
a13c20f6 2792
7955c1f1
MC		 2793 if (server) {
2794 /**
2795 * Server side
2796 * In TLSv1.3 on the server SNI is not associated with the session
2797 * but in TLSv1.2 or below it is.
2798 *
2799 * Before the handshake:
2800 * - return NULL
2801 *
2802 * During/after the handshake (TLSv1.2 or below resumption occurred):
2803 * - If a servername was accepted by the server in the original
2804 * handshake then it will return that servername, or NULL otherwise.
2805 *
2806 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2807 * - The function will return the servername requested by the client in
2808 * this handshake or NULL if none was requested.
2809 */
2810 if (s->hit && !SSL_IS_TLS13(s))
2811 return s->session->ext.hostname;
2812 } else {
2813 /**
2814 * Client side
2815 *
2816 * Before the handshake:
2817 * - If a servername has been set via a call to
2818 * SSL_set_tlsext_host_name() then it will return that servername
2819 * - If one has not been set, but a TLSv1.2 resumption is being
2820 * attempted and the session from the original handshake had a
2821 * servername accepted by the server then it will return that
2822 * servername
2823 * - Otherwise it returns NULL
2824 *
2825 * During/after the handshake (TLSv1.2 or below resumption occurred):
2826 * - If the session from the orignal handshake had a servername accepted
2827 * by the server then it will return that servername.
2828 * - Otherwise it returns the servername set via
2829 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2830 *
2831 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2832 * - It will return the servername set via SSL_set_tlsext_host_name()
2833 * (or NULL if it was not called).
2834 */
2835 if (SSL_in_before(s)) {
2836 if (s->ext.hostname == NULL
2837 && s->session != NULL
2838 && s->session->ssl_version != TLS1_3_VERSION)
2839 return s->session->ext.hostname;
2840 } else {
2841 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2842 return s->session->ext.hostname;
2843 }
2844 }
2845
328a0547 2846 return s->ext.hostname;
0f113f3e 2847}
ed3883d2 2848
f1fd4544 2849int SSL_get_servername_type(const SSL *s)
0f113f3e 2850{
7955c1f1 2851 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
0f113f3e
MC		 2852 return TLSEXT_NAMETYPE_host_name;
2853 return -1;
2854}
ee2ffc27 2855
0f113f3e
MC		 2856/*
2857 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2858 * expected that this function is called from the callback set by
0f113f3e
MC		 2859 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2860 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2861 * not included in the length. A byte string of length 0 is invalid. No byte
2862 * string may be truncated. The current, but experimental algorithm for
2863 * selecting the protocol is: 1) If the server doesn't support NPN then this
2864 * is indicated to the callback. In this case, the client application has to
2865 * abort the connection or have a default application level protocol. 2) If
2866 * the server supports NPN, but advertises an empty list then the client
f430ba31 2867 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2868 * fallback case was enacted. 3) Otherwise, the client finds the first
2869 * protocol in the server's list that it supports and selects this protocol.
2870 * This is because it's assumed that the server has better information about
2871 * which protocol a client should use. 4) If the client doesn't support any
2872 * of the server's advertised protocols, then this is treated the same as
2873 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2874 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2875 */
0f113f3e
MC		 2876int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2877 const unsigned char *server,
2878 unsigned int server_len,
a230b26e 2879 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2880{
2881 unsigned int i, j;
2882 const unsigned char *result;
2883 int status = OPENSSL_NPN_UNSUPPORTED;
2884
2885 /*
2886 * For each protocol in server preference order, see if we support it.
2887 */
2888 for (i = 0; i < server_len;) {
2889 for (j = 0; j < client_len;) {
2890 if (server[i] == client[j] &&
2891 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2892 /* We found a match */
2893 result = &server[i];
2894 status = OPENSSL_NPN_NEGOTIATED;
2895 goto found;
2896 }
2897 j += client[j];
2898 j++;
2899 }
2900 i += server[i];
2901 i++;
2902 }
2903
2904 /* There's no overlap between our protocols and the server's list. */
2905 result = client;
2906 status = OPENSSL_NPN_NO_OVERLAP;
2907
2908 found:
2909 *out = (unsigned char *)result + 1;
2910 *outlen = result[0];
2911 return status;
2912}
ee2ffc27 2913
e481f9b9 2914#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2915/*
2916 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2917 * client's requested protocol for this connection and returns 0. If the
2918 * client didn't request any protocol, then *data is set to NULL. Note that
2919 * the client can request any protocol it chooses. The value returned from
2920 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2921 * provided by the callback.
2922 */
0f113f3e
MC		 2923void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2924 unsigned *len)
2925{
aff8c126 2926 *data = s->ext.npn;
12a765a5 2927 if (*data == NULL) {
0f113f3e
MC		 2928 *len = 0;
2929 } else {
aff8c126 2930 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2931 }
2932}
2933
2934/*
aff8c126 2935 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2936 * a TLS server needs a list of supported protocols for Next Protocol
2937 * Negotiation. The returned list must be in wire format. The list is
2938 * returned by setting |out| to point to it and |outlen| to its length. This
2939 * memory will not be modified, but one should assume that the SSL* keeps a
2940 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2941 * wishes to advertise. Otherwise, no such extension will be included in the
2942 * ServerHello.
2943 */
aff8c126 2944void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2945 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2946 void *arg)
0f113f3e 2947{
aff8c126
RS		 2948 ctx->ext.npn_advertised_cb = cb;
2949 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2950}
2951
2952/*
2953 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2954 * client needs to select a protocol from the server's provided list. |out|
2955 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2956 * The length of the protocol name must be written into |outlen|. The
2957 * server's advertised protocols are provided in |in| and |inlen|. The
2958 * callback can assume that |in| is syntactically valid. The client must
2959 * select a protocol. It is fatal to the connection if this callback returns
2960 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2961 */
aff8c126 2962void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2963 SSL_CTX_npn_select_cb_func cb,
aff8c126 2964 void *arg)
0f113f3e 2965{
aff8c126
RS		 2966 ctx->ext.npn_select_cb = cb;
2967 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2968}
e481f9b9 2969#endif
a398f821 2970
0f113f3e
MC		 2971/*
2972 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2973 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2974 * length-prefixed strings). Returns 0 on success.
2975 */
2976int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2977 unsigned int protos_len)
0f113f3e 2978{
aff8c126
RS		 2979 OPENSSL_free(ctx->ext.alpn);
2980 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2981 if (ctx->ext.alpn == NULL) {
72e9be3d 2982 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2983 return 1;
72e9be3d 2984 }
aff8c126 2985 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2986
2987 return 0;
2988}
2989
2990/*
2991 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2992 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2993 * length-prefixed strings). Returns 0 on success.
2994 */
2995int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2996 unsigned int protos_len)
0f113f3e 2997{
aff8c126
RS		 2998 OPENSSL_free(ssl->ext.alpn);
2999 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
3000 if (ssl->ext.alpn == NULL) {
72e9be3d 3001 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 3002 return 1;
72e9be3d 3003 }
aff8c126 3004 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 3005
3006 return 0;
3007}
3008
3009/*
3010 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3011 * called during ClientHello processing in order to select an ALPN protocol
3012 * from the client's list of offered protocols.
3013 */
3014void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 3015 SSL_CTX_alpn_select_cb_func cb,
3016 void *arg)
0f113f3e 3017{
aff8c126
RS		 3018 ctx->ext.alpn_select_cb = cb;
3019 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 3020}
3021
3022/*
69687aa8
F		 3023 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3024 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 3025 * (not including the leading length-prefix byte). If the server didn't
3026 * respond with a negotiated protocol then |*len| will be zero.
3027 */
6f017a8f 3028void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 3029 unsigned int *len)
0f113f3e 3030{
555cbb32 3031 *data = ssl->s3.alpn_selected;
0f113f3e
MC		 3032 if (*data == NULL)
3033 *len = 0;
3034 else
555cbb32 3035 *len = (unsigned int)ssl->s3.alpn_selected_len;
0f113f3e
MC		 3036}
3037
74b4b494 3038int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 3039 const char *label, size_t llen,
23cec1f4 3040 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 3041 int use_context)
3042{
c8a18468 3043 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 3044 return -1;
e0af0405 3045
0f113f3e 3046 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 3047 llen, context,
3048 contextlen, use_context);
0f113f3e 3049}
e0af0405 3050
b38ede80
TT		 3051int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3052 const char *label, size_t llen,
3053 const unsigned char *context,
3054 size_t contextlen)
3055{
3056 if (s->version != TLS1_3_VERSION)
3057 return 0;
3058
3059 return tls13_export_keying_material_early(s, out, olen, label, llen,
3060 context, contextlen);
3061}
3062
3c1d6bbc 3063static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 3064{
bd5d27c1 3065 const unsigned char *session_id = a->session_id;
0f113f3e 3066 unsigned long l;
bd5d27c1
DB		 3067 unsigned char tmp_storage[4];
3068
3069 if (a->session_id_length < sizeof(tmp_storage)) {
3070 memset(tmp_storage, 0, sizeof(tmp_storage));
3071 memcpy(tmp_storage, a->session_id, a->session_id_length);
3072 session_id = tmp_storage;
3073 }
0f113f3e
MC		 3074
3075 l = (unsigned long)
bd5d27c1
DB		 3076 ((unsigned long)session_id[0]) |
3077 ((unsigned long)session_id[1] << 8L) |
3078 ((unsigned long)session_id[2] << 16L) |
3079 ((unsigned long)session_id[3] << 24L);
26a7d938 3080 return l;
0f113f3e
MC		 3081}
3082
3083/*
3084 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3085 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3086 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3087 * being able to construct an SSL_SESSION that will collide with any existing
3088 * session with a matching session ID.
3089 */
3090static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3091{
3092 if (a->ssl_version != b->ssl_version)
208fb891 3093 return 1;
0f113f3e 3094 if (a->session_id_length != b->session_id_length)
208fb891 3095 return 1;
26a7d938 3096 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3097}
3098
3099/*
3100 * These wrapper functions should remain rather than redeclaring
d0fa136c 3101 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3102 * variable. The reason is that the functions aren't static, they're exposed
3103 * via ssl.h.
3104 */
97b17195 3105
ba18627e
MC		 3106SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3107 const SSL_METHOD *meth)
0f113f3e
MC		 3108{
3109 SSL_CTX *ret = NULL;
3110
3111 if (meth == NULL) {
ba18627e 3112 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3113 return NULL;
0f113f3e
MC		 3114 }
3115
0fc32b07
MC		 3116 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3117 return NULL;
7fa792d1 3118
0f113f3e 3119 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
ba18627e 3120 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
0f113f3e
MC		 3121 goto err;
3122 }
b51bce94 3123 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3124 if (ret == NULL)
3125 goto err;
3126
ba18627e
MC		 3127 ret->libctx = libctx;
3128 if (propq != NULL) {
3129 ret->propq = OPENSSL_strdup(propq);
3130 if (ret->propq == NULL)
3131 goto err;
3132 }
3133
0f113f3e 3134 ret->method = meth;
7946ab33
KR		 3135 ret->min_proto_version = 0;
3136 ret->max_proto_version = 0;
693cf80c 3137 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3138 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3139 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3140 /* We take the system default. */
0f113f3e 3141 ret->session_timeout = meth->get_timeout();
0f113f3e 3142 ret->references = 1;
16203f7b
AG		 3143 ret->lock = CRYPTO_THREAD_lock_new();
3144 if (ret->lock == NULL) {
ba18627e 3145 SSLerr(0, ERR_R_MALLOC_FAILURE);
16203f7b
AG		 3146 OPENSSL_free(ret);
3147 return NULL;
3148 }
0f113f3e 3149 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3150 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3151 if ((ret->cert = ssl_cert_new()) == NULL)
3152 goto err;
3153
62d0577e 3154 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3155 if (ret->sessions == NULL)
3156 goto err;
3157 ret->cert_store = X509_STORE_new();
3158 if (ret->cert_store == NULL)
3159 goto err;
ed29e82a 3160#ifndef OPENSSL_NO_CT
1a37ee94 3161 ret->ctlog_store = CTLOG_STORE_new_with_libctx(libctx, propq);
ed29e82a
RP		 3162 if (ret->ctlog_store == NULL)
3163 goto err;
3164#endif
f865b081 3165
c8f6c28a
MC		 3166 /* initialize cipher/digest methods table */
3167 if (!ssl_load_ciphers(ret))
075b1f2f 3168 goto err2;
c8f6c28a 3169
5d120511 3170 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
f865b081
MC		 3171 goto err;
3172
61986d32 3173 if (!ssl_create_cipher_list(ret->method,
f865b081 3174 ret->tls13_ciphersuites,
a230b26e 3175 &ret->cipher_list, &ret->cipher_list_by_id,
5d120511 3176 OSSL_default_cipher_list(), ret->cert)
a230b26e 3177 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
ba18627e 3178 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
0f113f3e
MC		 3179 goto err2;
3180 }
3181
3182 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3183 if (ret->param == NULL)
0f113f3e
MC		 3184 goto err;
3185
c8f6c28a
MC		 3186 /*
3187 * If these aren't available from the provider we'll get NULL returns.
3188 * That's fine but will cause errors later if SSLv3 is negotiated
3189 */
3190 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3191 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
0f113f3e 3192
fa7c2637 3193 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3194 goto err;
3195
98732979
MC		 3196 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3197 goto err;
3198
25a807bc
F		 3199 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3200 goto err;
0f113f3e 3201
4bfb96f2
TS		 3202 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3203 goto err;
3204
0f113f3e
MC		 3205 /* No compression for DTLS */
3206 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3207 ret->comp_methods = SSL_COMP_get_compression_methods();
3208
3209 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3210 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3211
4e2e1ec9 3212 /* Setup RFC5077 ticket keys */
8f21260b
MC		 3213 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3214 sizeof(ret->ext.tick_key_name)) <= 0)
3215 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3216 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3217 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3218 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
0f113f3e 3219 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3220
8f21260b
MC		 3221 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3222 sizeof(ret->ext.cookie_hmac_key)) <= 0)
43054d3d
MC		 3223 goto err;
3224
edc032b5 3225#ifndef OPENSSL_NO_SRP
61986d32 3226 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 3227 goto err;
edc032b5 3228#endif
4db9677b 3229#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3230# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3231# define eng_strx(x) #x
3232# define eng_str(x) eng_strx(x)
3233 /* Use specific client engine automatically... ignore errors */
3234 {
3235 ENGINE *eng;
3236 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3237 if (!eng) {
3238 ERR_clear_error();
3239 ENGINE_load_builtin_engines();
3240 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3241 }
3242 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3243 ERR_clear_error();
3244 }
3245# endif
3246#endif
3247 /*
3248 * Default is to connect to non-RI servers. When RI is more widely
3249 * deployed might change this.
3250 */
3251 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3252 /*
3253 * Disable compression by default to prevent CRIME. Applications can
3254 * re-enable compression by configuring
3255 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3256 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3257 * middlebox compatibility by default. This may be disabled by default in
3258 * a later OpenSSL version.
dc5744cb 3259 */
a5816a5a 3260 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3261
aff8c126 3262 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3263
bfa9a9af 3264 /*
c39e4048
BK		 3265 * We cannot usefully set a default max_early_data here (which gets
3266 * propagated in SSL_new(), for the following reason: setting the
3267 * SSL field causes tls_construct_stoc_early_data() to tell the
3268 * client that early data will be accepted when constructing a TLS 1.3
3269 * session ticket, and the client will accordingly send us early data
3270 * when using that ticket (if the client has early data to send).
3271 * However, in order for the early data to actually be consumed by
3272 * the application, the application must also have calls to
3273 * SSL_read_early_data(); otherwise we'll just skip past the early data
3274 * and ignore it. So, since the application must add calls to
3275 * SSL_read_early_data(), we also require them to add
3276 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3277 * eliminating the bandwidth-wasting early data in the case described
3278 * above.
bfa9a9af 3279 */
c39e4048 3280 ret->max_early_data = 0;
bfa9a9af 3281
4e8548e8
MC		 3282 /*
3283 * Default recv_max_early_data is a fully loaded single record. Could be
3284 * split across multiple records in practice. We set this differently to
3285 * max_early_data so that, in the default case, we do not advertise any
3286 * support for early_data, but if a client were to send us some (e.g.
3287 * because of an old, stale ticket) then we will tolerate it and skip over
3288 * it.
3289 */
3290 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3291
36ff232c
MC		 3292 /* By default we send two session tickets automatically in TLSv1.3 */
3293 ret->num_tickets = 2;
9d0a8bb7 3294
8a5ed9dc
TM		 3295 ssl_ctx_system_config(ret);
3296
16203f7b 3297 return ret;
0f113f3e 3298 err:
ba18627e 3299 SSLerr(0, ERR_R_MALLOC_FAILURE);
0f113f3e 3300 err2:
e0e920b1 3301 SSL_CTX_free(ret);
16203f7b 3302 return NULL;
0f113f3e 3303}
d02b48c6 3304
ba18627e
MC		 3305SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3306{
3307 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3308}
3309
c5ebfcab 3310int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3311{
16203f7b 3312 int i;
c5ebfcab 3313
2f545ae4 3314 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3315 return 0;
3316
3317 REF_PRINT_COUNT("SSL_CTX", ctx);
3318 REF_ASSERT_ISNT(i < 2);
3319 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3320}
3321
4f43d0e7 3322void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3323{
3324 int i;
d02b48c6 3325
0f113f3e
MC		 3326 if (a == NULL)
3327 return;
d02b48c6 3328
2f545ae4 3329 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3330 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3331 if (i > 0)
3332 return;
f3f1cf84 3333 REF_ASSERT_ISNT(i < 0);
0f113f3e 3334
222561fe 3335 X509_VERIFY_PARAM_free(a->param);
919ba009 3336 dane_ctx_final(&a->dane);
0f113f3e
MC		 3337
3338 /*
3339 * Free internal session cache. However: the remove_cb() may reference
3340 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3341 * after the sessions were flushed.
3342 * As the ex_data handling routines might also touch the session cache,
3343 * the most secure solution seems to be: empty (flush) the cache, then
3344 * free ex_data, then finally free the cache.
3345 * (See ticket [openssl.org #212].)
3346 */
3347 if (a->sessions != NULL)
3348 SSL_CTX_flush_sessions(a, 0);
3349
3350 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3351 lh_SSL_SESSION_free(a->sessions);
222561fe 3352 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3353#ifndef OPENSSL_NO_CT
3354 CTLOG_STORE_free(a->ctlog_store);
3355#endif
25aaa98a
RS		 3356 sk_SSL_CIPHER_free(a->cipher_list);
3357 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3358 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3359 ssl_cert_free(a->cert);
fa7c2637 3360 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3361 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
222561fe 3362 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3363 a->comp_methods = NULL;
e783bae2 3364#ifndef OPENSSL_NO_SRTP
25aaa98a 3365 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3366#endif
edc032b5 3367#ifndef OPENSSL_NO_SRP
0f113f3e 3368 SSL_CTX_SRP_CTX_free(a);
edc032b5 3369#endif
bdfe932d 3370#ifndef OPENSSL_NO_ENGINE
7c96dbcd 3371 ENGINE_finish(a->client_cert_engine);
ddac1974 3372#endif
8671b898 3373
e481f9b9 3374#ifndef OPENSSL_NO_EC
aff8c126 3375 OPENSSL_free(a->ext.ecpointformats);
8671b898 3376#endif
187753e0 3377 OPENSSL_free(a->ext.supportedgroups);
aff8c126 3378 OPENSSL_free(a->ext.alpn);
4bfb96f2 3379 OPENSSL_secure_free(a->ext.secure);
8671b898 3380
c8f6c28a
MC		 3381 ssl_evp_md_free(a->md5);
3382 ssl_evp_md_free(a->sha1);
3383
3384 for (i = 0; i < SSL_ENC_NUM_IDX; i++)
3385 ssl_evp_cipher_free(a->ssl_cipher_methods[i]);
3386 for (i = 0; i < SSL_MD_NUM_IDX; i++)
3387 ssl_evp_md_free(a->ssl_digest_methods[i]);
3388
16203f7b
AG		 3389 CRYPTO_THREAD_lock_free(a->lock);
3390
ba18627e
MC		 3391 OPENSSL_free(a->propq);
3392
0f113f3e
MC		 3393 OPENSSL_free(a);
3394}
d02b48c6 3395
3ae76679 3396void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3397{
3398 ctx->default_passwd_callback = cb;
3399}
3400
3401void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3402{
3403 ctx->default_passwd_callback_userdata = u;
3404}
3405
0c452abc
CH		 3406pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3407{
3408 return ctx->default_passwd_callback;
3409}
3410
3411void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3412{
3413 return ctx->default_passwd_callback_userdata;
3414}
3415
a974e64a
MC		 3416void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3417{
3418 s->default_passwd_callback = cb;
3419}
3420
3421void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3422{
3423 s->default_passwd_callback_userdata = u;
3424}
3425
0c452abc
CH		 3426pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3427{
3428 return s->default_passwd_callback;
3429}
3430
3431void *SSL_get_default_passwd_cb_userdata(SSL *s)
3432{
3433 return s->default_passwd_callback_userdata;
3434}
3435
0f113f3e
MC		 3436void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3437 int (*cb) (X509_STORE_CTX *, void *),
3438 void *arg)
3439{
3440 ctx->app_verify_callback = cb;
3441 ctx->app_verify_arg = arg;
3442}
3443
3444void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3445 int (*cb) (int, X509_STORE_CTX *))
3446{
3447 ctx->verify_mode = mode;
3448 ctx->default_verify_callback = cb;
3449}
3450
3451void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3452{
3453 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3454}
3455
a230b26e 3456void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3457{
3458 ssl_cert_set_cert_cb(c->cert, cb, arg);
3459}
3460
3461void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3462{
3463 ssl_cert_set_cert_cb(s->cert, cb, arg);
3464}
18d71588 3465
2cf28d61 3466void ssl_set_masks(SSL *s)
0f113f3e 3467{
6383d316 3468 CERT *c = s->cert;
555cbb32 3469 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 3470 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3471 unsigned long mask_k, mask_a;
10bf4fc2 3472#ifndef OPENSSL_NO_EC
361a1191 3473 int have_ecc_cert, ecdsa_ok;
14536c8c 3474#endif
0f113f3e
MC		 3475 if (c == NULL)
3476 return;
d02b48c6 3477
bc36ee62 3478#ifndef OPENSSL_NO_DH
0f113f3e 3479 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3480#else
361a1191 3481 dh_tmp = 0;
d02b48c6
RE		 3482#endif
3483
d0ff28f8 3484 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3485 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3486 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3487#ifndef OPENSSL_NO_EC
6383d316 3488 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3489#endif
0f113f3e
MC		 3490 mask_k = 0;
3491 mask_a = 0;
0e1dba93 3492
77359d22
RL		 3493 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3494 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 3495
2a9b9654 3496#ifndef OPENSSL_NO_GOST
4020c0b3 3497 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
5a5530a2 3498 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3499 mask_a |= SSL_aGOST12;
3500 }
4020c0b3 3501 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
5a5530a2 3502 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3503 mask_a |= SSL_aGOST12;
3504 }
4020c0b3 3505 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3506 mask_k |= SSL_kGOST;
3507 mask_a |= SSL_aGOST01;
3508 }
2a9b9654 3509#endif
0f113f3e 3510
361a1191 3511 if (rsa_enc)
0f113f3e 3512 mask_k |= SSL_kRSA;
d02b48c6 3513
0f113f3e
MC		 3514 if (dh_tmp)
3515 mask_k |= SSL_kDHE;
d02b48c6 3516
6aaa29fb
DSH		 3517 /*
3518 * If we only have an RSA-PSS certificate allow RSA authentication
3519 * if TLS 1.2 and peer supports it.
3520 */
3521
3522 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3523 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3524 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3525 mask_a |= SSL_aRSA;
d02b48c6 3526
0f113f3e
MC		 3527 if (dsa_sign) {
3528 mask_a |= SSL_aDSS;
0f113f3e 3529 }
d02b48c6 3530
0f113f3e 3531 mask_a |= SSL_aNULL;
d02b48c6 3532
0f113f3e
MC		 3533 /*
3534 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3535 * depending on the key usage extension.
3536 */
14536c8c 3537#ifndef OPENSSL_NO_EC
0f113f3e 3538 if (have_ecc_cert) {
a8d8e06b 3539 uint32_t ex_kusage;
4020c0b3 3540 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3541 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3542 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3543 ecdsa_ok = 0;
c7c46256 3544 if (ecdsa_ok)
0f113f3e 3545 mask_a |= SSL_aECDSA;
0f113f3e 3546 }
b2021556
DSH		 3547 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3548 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3549 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3550 && TLS1_get_version(s) == TLS1_2_VERSION)
3551 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3552
3553 /* Allow Ed448 for TLS 1.2 if peer supports it */
3554 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3555 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3556 && TLS1_get_version(s) == TLS1_2_VERSION)
3557 mask_a |= SSL_aECDSA;
14536c8c 3558#endif
ea262260 3559
10bf4fc2 3560#ifndef OPENSSL_NO_EC
fe6ef247 3561 mask_k |= SSL_kECDHE;
ea262260 3562#endif
ddac1974
NL		 3563
3564#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3565 mask_k |= SSL_kPSK;
3566 mask_a |= SSL_aPSK;
526f94ad
DSH		 3567 if (mask_k & SSL_kRSA)
3568 mask_k |= SSL_kRSAPSK;
3569 if (mask_k & SSL_kDHE)
3570 mask_k |= SSL_kDHEPSK;
3571 if (mask_k & SSL_kECDHE)
3572 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3573#endif
3574
555cbb32
TS		 3575 s->s3.tmp.mask_k = mask_k;
3576 s->s3.tmp.mask_a = mask_a;
0f113f3e 3577}
d02b48c6 3578
ef236ec3
DSH		 3579#ifndef OPENSSL_NO_EC
3580
a2f9200f 3581int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3582{
555cbb32 3583 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3584 /* key usage, if present, must allow signing */
ce0c1f2b 3585 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3586 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3587 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3588 return 0;
3589 }
3590 }
0f113f3e
MC		 3591 return 1; /* all checks are ok */
3592}
ea262260 3593
ef236ec3
DSH		 3594#endif
3595
a398f821 3596int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3597 size_t *serverinfo_length)
3598{
555cbb32 3599 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 3600 *serverinfo_length = 0;
3601
a497cf25 3602 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3603 return 0;
3604
a497cf25
DSH		 3605 *serverinfo = cpk->serverinfo;
3606 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3607 return 1;
3608}
0f113f3e
MC		 3609
3610void ssl_update_cache(SSL *s, int mode)
3611{
3612 int i;
3613
3614 /*
3615 * If the session_id_length is 0, we are not supposed to cache it, and it
3616 * would be rather hard to do anyway :-)
3617 */
3618 if (s->session->session_id_length == 0)
3619 return;
3620
d316cdcf
BK		 3621 /*
3622 * If sid_ctx_length is 0 there is no specific application context
3623 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 3624 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3625 * indication that this is actually a session for the proper application
3626 * context, and the *handshake* will fail, not just the resumption attempt.
3627 * Do not cache (on the server) these sessions that are not resumable
3628 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 3629 */
c4fa1f7f 3630 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 3631 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3632 return;
3633
0f113f3e 3634 i = s->session_ctx->session_cache_mode;
5d61491c 3635 if ((i & mode) != 0
ee94ec2e
MC		 3636 && (!s->hit || SSL_IS_TLS13(s))) {
3637 /*
3638 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 3639 * normally don't do this because by default it's a full stateless ticket
3640 * with only a dummy session id so there is no reason to cache it,
3641 * unless:
ee94ec2e
MC		 3642 * - we are doing early_data, in which case we cache so that we can
3643 * detect replays
3644 * - the application has set a remove_session_cb so needs to know about
3645 * session timeout events
6cc0b3c2 3646 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 3647 */
3648 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3649 && (!SSL_IS_TLS13(s)
3650 || !s->server
5d263fb7
MC		 3651 || (s->max_early_data > 0
3652 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 3653 || s->session_ctx->remove_session_cb != NULL
3654 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 3655 SSL_CTX_add_session(s->session_ctx, s->session);
3656
3657 /*
3658 * Add the session to the external cache. We do this even in server side
3659 * TLSv1.3 without early data because some applications just want to
3660 * know about the creation of a session and aren't doing a full cache.
3661 */
3662 if (s->session_ctx->new_session_cb != NULL) {
3663 SSL_SESSION_up_ref(s->session);
3664 if (!s->session_ctx->new_session_cb(s, s->session))
3665 SSL_SESSION_free(s->session);
3666 }
0f113f3e
MC		 3667 }
3668
3669 /* auto flush every 255 connections */
3670 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 3671 TSAN_QUALIFIER int *stat;
1fcb4e4d
BK		 3672 if (mode & SSL_SESS_CACHE_CLIENT)
3673 stat = &s->session_ctx->stats.sess_connect_good;
3674 else
3675 stat = &s->session_ctx->stats.sess_accept_good;
9ef9088c 3676 if ((tsan_load(stat) & 0xff) == 0xff)
0f113f3e 3677 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3678 }
3679}
d02b48c6 3680
3499327b 3681const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 3682{
3683 return ctx->method;
3684}
ba168244 3685
3499327b 3686const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 3687{
26a7d938 3688 return s->method;
0f113f3e 3689}
d02b48c6 3690
4ebb342f 3691int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3692{
0f113f3e
MC		 3693 int ret = 1;
3694
3695 if (s->method != meth) {
919ba009 3696 const SSL_METHOD *sm = s->method;
a230b26e 3697 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3698
919ba009 3699 if (sm->version == meth->version)
0f113f3e
MC		 3700 s->method = meth;
3701 else {
919ba009 3702 sm->ssl_free(s);
0f113f3e
MC		 3703 s->method = meth;
3704 ret = s->method->ssl_new(s);
3705 }
3706
919ba009 3707 if (hf == sm->ssl_connect)
0f113f3e 3708 s->handshake_func = meth->ssl_connect;
919ba009 3709 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3710 s->handshake_func = meth->ssl_accept;
3711 }
26a7d938 3712 return ret;
0f113f3e
MC		 3713}
3714
3715int SSL_get_error(const SSL *s, int i)
3716{
3717 int reason;
3718 unsigned long l;
3719 BIO *bio;
3720
3721 if (i > 0)
26a7d938 3722 return SSL_ERROR_NONE;
0f113f3e
MC		 3723
3724 /*
3725 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3726 * where we do encode the error
3727 */
3728 if ((l = ERR_peek_error()) != 0) {
3729 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3730 return SSL_ERROR_SYSCALL;
0f113f3e 3731 else
26a7d938 3732 return SSL_ERROR_SSL;
0f113f3e
MC		 3733 }
3734
8051ab2b
MC		 3735 if (SSL_want_read(s)) {
3736 bio = SSL_get_rbio(s);
3737 if (BIO_should_read(bio))
26a7d938 3738 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3739 else if (BIO_should_write(bio))
3740 /*
3741 * This one doesn't make too much sense ... We never try to write
3742 * to the rbio, and an application program where rbio and wbio
3743 * are separate couldn't even know what it should wait for.
3744 * However if we ever set s->rwstate incorrectly (so that we have
3745 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3746 * wbio *are* the same, this test works around that bug; so it
3747 * might be safer to keep it.
3748 */
26a7d938 3749 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3750 else if (BIO_should_io_special(bio)) {
3751 reason = BIO_get_retry_reason(bio);
3752 if (reason == BIO_RR_CONNECT)
26a7d938 3753 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3754 else if (reason == BIO_RR_ACCEPT)
26a7d938 3755 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3756 else
26a7d938 3757 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3758 }
8051ab2b 3759 }
0f113f3e 3760
8051ab2b 3761 if (SSL_want_write(s)) {
69687aa8 3762 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3763 bio = s->wbio;
3764 if (BIO_should_write(bio))
26a7d938 3765 return SSL_ERROR_WANT_WRITE;
8051ab2b 3766 else if (BIO_should_read(bio))
2e7dc7cd 3767 /*
8051ab2b 3768 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3769 */
26a7d938 3770 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3771 else if (BIO_should_io_special(bio)) {
3772 reason = BIO_get_retry_reason(bio);
3773 if (reason == BIO_RR_CONNECT)
26a7d938 3774 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3775 else if (reason == BIO_RR_ACCEPT)
26a7d938 3776 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3777 else
26a7d938 3778 return SSL_ERROR_SYSCALL;
0f113f3e 3779 }
07bbc92c 3780 }
6b1bb98f 3781 if (SSL_want_x509_lookup(s))
26a7d938 3782 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3783 if (SSL_want_async(s))
8051ab2b 3784 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3785 if (SSL_want_async_job(s))
8051ab2b 3786 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3787 if (SSL_want_client_hello_cb(s))
3788 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3789
3790 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
555cbb32 3791 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3792 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3793
26a7d938 3794 return SSL_ERROR_SYSCALL;
0f113f3e 3795}
d02b48c6 3796
add2f5ca
MC		 3797static int ssl_do_handshake_intern(void *vargs)
3798{
3799 struct ssl_async_args *args;
3800 SSL *s;
3801
3802 args = (struct ssl_async_args *)vargs;
3803 s = args->s;
3804
3805 return s->handshake_func(s);
3806}
3807
4f43d0e7 3808int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3809{
3810 int ret = 1;
3811
3812 if (s->handshake_func == NULL) {
3813 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3814 return -1;
0f113f3e
MC		 3815 }
3816
3eaa4170 3817 ossl_statem_check_finish_init(s, -1);
49e7fe12 3818
c7f47786 3819 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 3820
3821 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3822 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3823 struct ssl_async_args args;
3824
3825 args.s = s;
3826
7fecbf6f 3827 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3828 } else {
3829 ret = s->handshake_func(s);
3830 }
0f113f3e 3831 }
add2f5ca 3832 return ret;
0f113f3e
MC		 3833}
3834
4f43d0e7 3835void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3836{
3837 s->server = 1;
3838 s->shutdown = 0;
fe3a3291 3839 ossl_statem_clear(s);
0f113f3e 3840 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3841 clear_ciphers(s);
0f113f3e 3842}
d02b48c6 3843
4f43d0e7 3844void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3845{
3846 s->server = 0;
3847 s->shutdown = 0;
fe3a3291 3848 ossl_statem_clear(s);
0f113f3e 3849 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3850 clear_ciphers(s);
0f113f3e 3851}
d02b48c6 3852
4f43d0e7 3853int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3854{
3855 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3856 return 0;
0f113f3e 3857}
d02b48c6 3858
41a15c4f 3859int ssl_undefined_void_function(void)
0f113f3e
MC		 3860{
3861 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3862 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3863 return 0;
0f113f3e 3864}
41a15c4f 3865
0821bcd4 3866int ssl_undefined_const_function(const SSL *s)
0f113f3e 3867{
26a7d938 3868 return 0;
0f113f3e 3869}
0821bcd4 3870
2b8fa1d5 3871const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3872{
3873 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3874 return NULL;
0f113f3e 3875}
d02b48c6 3876
3eb2aff4 3877const char *ssl_protocol_to_string(int version)
7d650072 3878{
2abacef1
MC		 3879 switch(version)
3880 {
3881 case TLS1_3_VERSION:
582a17d6 3882 return "TLSv1.3";
2abacef1
MC		 3883
3884 case TLS1_2_VERSION:
7d650072 3885 return "TLSv1.2";
2abacef1
MC		 3886
3887 case TLS1_1_VERSION:
7d650072 3888 return "TLSv1.1";
2abacef1
MC		 3889
3890 case TLS1_VERSION:
ee3a6c64 3891 return "TLSv1";
2abacef1
MC		 3892
3893 case SSL3_VERSION:
7d650072 3894 return "SSLv3";
2abacef1
MC		 3895
3896 case DTLS1_BAD_VER:
7d650072 3897 return "DTLSv0.9";
2abacef1
MC		 3898
3899 case DTLS1_VERSION:
7d650072 3900 return "DTLSv1";
2abacef1
MC		 3901
3902 case DTLS1_2_VERSION:
7d650072 3903 return "DTLSv1.2";
2abacef1
MC		 3904
3905 default:
3906 return "unknown";
3907 }
0f113f3e 3908}
d02b48c6 3909
7d650072
KR		 3910const char *SSL_get_version(const SSL *s)
3911{
3eb2aff4 3912 return ssl_protocol_to_string(s->version);
7d650072
KR		 3913}
3914
98732979 3915static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 3916{
3917 STACK_OF(X509_NAME) *sk;
3918 X509_NAME *xn;
98732979
MC		 3919 int i;
3920
3921 if (src == NULL) {
3922 *dst = NULL;
3923 return 1;
3924 }
3925
3926 if ((sk = sk_X509_NAME_new_null()) == NULL)
3927 return 0;
3928 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3929 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3930 if (xn == NULL) {
3931 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3932 return 0;
3933 }
3934 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3935 X509_NAME_free(xn);
3936 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3937 return 0;
3938 }
3939 }
3940 *dst = sk;
3941
3942 return 1;
3943}
3944
3945SSL *SSL_dup(SSL *s)
3946{
0f113f3e
MC		 3947 SSL *ret;
3948 int i;
3949
919ba009
VD		 3950 /* If we're not quiescent, just up_ref! */
3951 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3952 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3953 return s;
3954 }
3955
3956 /*
3957 * Otherwise, copy configuration state, and session if set.
3958 */
0f113f3e 3959 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3960 return NULL;
0f113f3e 3961
0f113f3e 3962 if (s->session != NULL) {
919ba009
VD		 3963 /*
3964 * Arranges to share the same session via up_ref. This "copies"
3965 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3966 */
61986d32 3967 if (!SSL_copy_session_id(ret, s))
17dd65e6 3968 goto err;
0f113f3e
MC		 3969 } else {
3970 /*
3971 * No session has been established yet, so we have to expect that
3972 * s->cert or ret->cert will be changed later -- they should not both
3973 * point to the same object, and thus we can't use
3974 * SSL_copy_session_id.
3975 */
919ba009
VD		 3976 if (!SSL_set_ssl_method(ret, s->method))
3977 goto err;
0f113f3e
MC		 3978
3979 if (s->cert != NULL) {
e0e920b1 3980 ssl_cert_free(ret->cert);
0f113f3e
MC		 3981 ret->cert = ssl_cert_dup(s->cert);
3982 if (ret->cert == NULL)
3983 goto err;
3984 }
3985
348240c6
MC		 3986 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3987 (int)s->sid_ctx_length))
69f68237 3988 goto err;
0f113f3e
MC		 3989 }
3990
9f6b22b8
VD		 3991 if (!ssl_dane_dup(ret, s))
3992 goto err;
919ba009 3993 ret->version = s->version;
0f113f3e
MC		 3994 ret->options = s->options;
3995 ret->mode = s->mode;
3996 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3997 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3998 ret->msg_callback = s->msg_callback;
3999 ret->msg_callback_arg = s->msg_callback_arg;
4000 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4001 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4002 ret->generate_session_id = s->generate_session_id;
4003
4004 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4005
0f113f3e
MC		 4006 /* copy app data, a little dangerous perhaps */
4007 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4008 goto err;
4009
4010 /* setup rbio, and wbio */
4011 if (s->rbio != NULL) {
4012 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
4013 goto err;
4014 }
4015 if (s->wbio != NULL) {
4016 if (s->wbio != s->rbio) {
4017 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
4018 goto err;
65e2d672
MC		 4019 } else {
4020 BIO_up_ref(ret->rbio);
0f113f3e 4021 ret->wbio = ret->rbio;
65e2d672 4022 }
0f113f3e 4023 }
919ba009 4024
0f113f3e 4025 ret->server = s->server;
919ba009
VD		 4026 if (s->handshake_func) {
4027 if (s->server)
4028 SSL_set_accept_state(ret);
4029 else
4030 SSL_set_connect_state(ret);
4031 }
0f113f3e 4032 ret->shutdown = s->shutdown;
0f113f3e
MC		 4033 ret->hit = s->hit;
4034
a974e64a
MC		 4035 ret->default_passwd_callback = s->default_passwd_callback;
4036 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4037
0f113f3e
MC		 4038 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4039
4040 /* dup the cipher_list and cipher_list_by_id stacks */
4041 if (s->cipher_list != NULL) {
4042 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4043 goto err;
4044 }
4045 if (s->cipher_list_by_id != NULL)
4046 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4047 == NULL)
4048 goto err;
4049
4050 /* Dup the client_CA list */
98732979
MC		 4051 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4052 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4053 goto err;
4054
66696478 4055 return ret;
0f113f3e 4056
0f113f3e 4057 err:
66696478
RS		 4058 SSL_free(ret);
4059 return NULL;
0f113f3e 4060}
d02b48c6 4061
4f43d0e7 4062void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 4063{
4064 if (s->enc_read_ctx != NULL) {
846ec07d 4065 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 4066 s->enc_read_ctx = NULL;
4067 }
4068 if (s->enc_write_ctx != NULL) {
846ec07d 4069 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 4070 s->enc_write_ctx = NULL;
4071 }
09b6c2ef 4072#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 4073 COMP_CTX_free(s->expand);
4074 s->expand = NULL;
4075 COMP_CTX_free(s->compress);
4076 s->compress = NULL;
0f113f3e
MC		 4077#endif
4078}
d02b48c6 4079
0821bcd4 4080X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 4081{
4082 if (s->cert != NULL)
26a7d938 4083 return s->cert->key->x509;
0f113f3e 4084 else
26a7d938 4085 return NULL;
0f113f3e 4086}
d02b48c6 4087
a25f9adc 4088EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 4089{
4090 if (s->cert != NULL)
26a7d938 4091 return s->cert->key->privatekey;
0f113f3e 4092 else
26a7d938 4093 return NULL;
0f113f3e 4094}
d02b48c6 4095
a25f9adc 4096X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 4097{
4098 if (ctx->cert != NULL)
4099 return ctx->cert->key->x509;
4100 else
4101 return NULL;
4102}
a25f9adc
DSH		 4103
4104EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4105{
4106 if (ctx->cert != NULL)
4107 return ctx->cert->key->privatekey;
4108 else
4109 return NULL;
4110}
a25f9adc 4111
babb3798 4112const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 4113{
4114 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 4115 return s->session->cipher;
4116 return NULL;
0f113f3e
MC		 4117}
4118
0aed6e44
BK		 4119const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4120{
555cbb32 4121 return s->s3.tmp.new_cipher;
0aed6e44
BK		 4122}
4123
3499327b 4124const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4125{
9a555706
RS		 4126#ifndef OPENSSL_NO_COMP
4127 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4128#else
4129 return NULL;
4130#endif
0f113f3e 4131}
377dcdba 4132
3499327b 4133const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4134{
9a555706
RS		 4135#ifndef OPENSSL_NO_COMP
4136 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4137#else
4138 return NULL;
0f113f3e 4139#endif
9a555706 4140}
0f113f3e 4141
46417569 4142int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 4143{
4144 BIO *bbio;
4145
2e7dc7cd
MC		 4146 if (s->bbio != NULL) {
4147 /* Already buffered. */
4148 return 1;
0f113f3e 4149 }
46417569 4150
2e7dc7cd
MC		 4151 bbio = BIO_new(BIO_f_buffer());
4152 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4153 BIO_free(bbio);
0f113f3e 4154 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 4155 return 0;
0f113f3e 4156 }
2e7dc7cd
MC		 4157 s->bbio = bbio;
4158 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 4159
4160 return 1;
0f113f3e 4161}
413c4f45 4162
b77f3ed1 4163int ssl_free_wbio_buffer(SSL *s)
0f113f3e 4164{
62adbcee 4165 /* callers ensure s is never null */
0f113f3e 4166 if (s->bbio == NULL)
b77f3ed1 4167 return 1;
0f113f3e 4168
2e7dc7cd 4169 s->wbio = BIO_pop(s->wbio);
0f113f3e
MC		 4170 BIO_free(s->bbio);
4171 s->bbio = NULL;
b77f3ed1
MC		 4172
4173 return 1;
0f113f3e
MC		 4174}
4175
4176void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4177{
4178 ctx->quiet_shutdown = mode;
4179}
58964a49 4180
0821bcd4 4181int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4182{
26a7d938 4183 return ctx->quiet_shutdown;
0f113f3e 4184}
58964a49 4185
0f113f3e
MC		 4186void SSL_set_quiet_shutdown(SSL *s, int mode)
4187{
4188 s->quiet_shutdown = mode;
4189}
58964a49 4190
0821bcd4 4191int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4192{
26a7d938 4193 return s->quiet_shutdown;
0f113f3e 4194}
58964a49 4195
0f113f3e
MC		 4196void SSL_set_shutdown(SSL *s, int mode)
4197{
4198 s->shutdown = mode;
4199}
58964a49 4200
0821bcd4 4201int SSL_get_shutdown(const SSL *s)
0f113f3e 4202{
6546e9b2 4203 return s->shutdown;
0f113f3e 4204}
58964a49 4205
0821bcd4 4206int SSL_version(const SSL *s)
0f113f3e 4207{
6546e9b2
AG		 4208 return s->version;
4209}
4210
4211int SSL_client_version(const SSL *s)
4212{
4213 return s->client_version;
0f113f3e 4214}
58964a49 4215
0821bcd4 4216SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4217{
6546e9b2 4218 return ssl->ctx;
0f113f3e
MC		 4219}
4220
4221SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4222{
24a0d393 4223 CERT *new_cert;
0f113f3e
MC		 4224 if (ssl->ctx == ctx)
4225 return ssl->ctx;
0f113f3e 4226 if (ctx == NULL)
222da979 4227 ctx = ssl->session_ctx;
24a0d393
KR		 4228 new_cert = ssl_cert_dup(ctx->cert);
4229 if (new_cert == NULL) {
4230 return NULL;
0f113f3e 4231 }
21181889
MC		 4232
4233 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4234 ssl_cert_free(new_cert);
4235 return NULL;
4236 }
4237
24a0d393
KR		 4238 ssl_cert_free(ssl->cert);
4239 ssl->cert = new_cert;
0f113f3e
MC		 4240
4241 /*
4242 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4243 * so setter APIs must prevent invalid lengths from entering the system.
4244 */
380a522f
MC		 4245 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4246 return NULL;
0f113f3e
MC		 4247
4248 /*
4249 * If the session ID context matches that of the parent SSL_CTX,
4250 * inherit it from the new SSL_CTX as well. If however the context does
4251 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4252 * leave it unchanged.
4253 */
4254 if ((ssl->ctx != NULL) &&
4255 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4256 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4257 ssl->sid_ctx_length = ctx->sid_ctx_length;
4258 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4259 }
4260
16203f7b 4261 SSL_CTX_up_ref(ctx);
a230b26e 4262 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4263 ssl->ctx = ctx;
4264
16203f7b 4265 return ssl->ctx;
0f113f3e 4266}
ed3883d2 4267
4f43d0e7 4268int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4269{
26a7d938 4270 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 4271}
58964a49 4272
d84a7b20
MC		 4273int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4274{
4275 X509_LOOKUP *lookup;
4276
4277 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4278 if (lookup == NULL)
4279 return 0;
6dcb100f
RL		 4280
4281 /* We ignore errors, in case the directory doesn't exist */
4282 ERR_set_mark();
4283
d84a7b20
MC		 4284 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4285
6dcb100f 4286 ERR_pop_to_mark();
d84a7b20
MC		 4287
4288 return 1;
4289}
4290
4291int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4292{
4293 X509_LOOKUP *lookup;
4294
4295 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4296 if (lookup == NULL)
4297 return 0;
4298
6dcb100f
RL		 4299 /* We ignore errors, in case the directory doesn't exist */
4300 ERR_set_mark();
4301
d84a7b20
MC		 4302 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4303
6dcb100f
RL		 4304 ERR_pop_to_mark();
4305
4306 return 1;
4307}
4308
4309int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4310{
4311 X509_LOOKUP *lookup;
4312
4313 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4314 if (lookup == NULL)
4315 return 0;
4316
4317 /* We ignore errors, in case the directory doesn't exist */
4318 ERR_set_mark();
4319
4320 X509_LOOKUP_add_store(lookup, NULL);
4321
4322 ERR_pop_to_mark();
d84a7b20
MC		 4323
4324 return 1;
4325}
4326
6dcb100f
RL		 4327int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4328{
4329 return X509_STORE_load_file(ctx->cert_store, CAfile);
4330}
4331
4332int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4333{
4334 return X509_STORE_load_path(ctx->cert_store, CApath);
4335}
4336
4337int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4338{
4339 return X509_STORE_load_store(ctx->cert_store, CAstore);
4340}
4341
303c0028 4342int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4343 const char *CApath)
4344{
6dcb100f
RL		 4345 if (CAfile == NULL && CApath == NULL)
4346 return 0;
4347 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4348 return 0;
4349 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4350 return 0;
4351 return 1;
0f113f3e 4352}
58964a49 4353
45d87a1f 4354void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4355 void (*cb) (const SSL *ssl, int type, int val))
4356{
4357 ssl->info_callback = cb;
4358}
4359
4360/*
4361 * One compiler (Diab DCC) doesn't like argument names in returned function
4362 * pointer.
4363 */
4364void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4365 int /* type */ ,
4366 int /* val */ ) {
4367 return ssl->info_callback;
4368}
58964a49 4369
0f113f3e
MC		 4370void SSL_set_verify_result(SSL *ssl, long arg)
4371{
4372 ssl->verify_result = arg;
4373}
58964a49 4374
0821bcd4 4375long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4376{
26a7d938 4377 return ssl->verify_result;
0f113f3e
MC		 4378}
4379
d9f1c639 4380size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4381{
6b8f5d0d 4382 if (outlen == 0)
555cbb32
TS		 4383 return sizeof(ssl->s3.client_random);
4384 if (outlen > sizeof(ssl->s3.client_random))
4385 outlen = sizeof(ssl->s3.client_random);
4386 memcpy(out, ssl->s3.client_random, outlen);
d9f1c639 4387 return outlen;
858618e7
NM		 4388}
4389
d9f1c639 4390size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4391{
6b8f5d0d 4392 if (outlen == 0)
555cbb32
TS		 4393 return sizeof(ssl->s3.server_random);
4394 if (outlen > sizeof(ssl->s3.server_random))
4395 outlen = sizeof(ssl->s3.server_random);
4396 memcpy(out, ssl->s3.server_random, outlen);
d9f1c639 4397 return outlen;
858618e7
NM		 4398}
4399
d9f1c639 4400size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4401 unsigned char *out, size_t outlen)
858618e7 4402{
d9f1c639
MC		 4403 if (outlen == 0)
4404 return session->master_key_length;
8c1a5343 4405 if (outlen > session->master_key_length)
858618e7
NM		 4406 outlen = session->master_key_length;
4407 memcpy(out, session->master_key, outlen);
d9f1c639 4408 return outlen;
858618e7
NM		 4409}
4410
725b0f1e 4411int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4412 size_t len)
4413{
4414 if (len > sizeof(sess->master_key))
4415 return 0;
4416
4417 memcpy(sess->master_key, in, len);
4418 sess->master_key_length = len;
911d63f2
MC		 4419 return 1;
4420}
4421
4422
0f113f3e
MC		 4423int SSL_set_ex_data(SSL *s, int idx, void *arg)
4424{
26a7d938 4425 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4426}
4427
4428void *SSL_get_ex_data(const SSL *s, int idx)
4429{
26a7d938 4430 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4431}
4432
0f113f3e
MC		 4433int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4434{
26a7d938 4435 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4436}
4437
4438void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4439{
26a7d938 4440 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4441}
58964a49 4442
0821bcd4 4443X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4444{
26a7d938 4445 return ctx->cert_store;
0f113f3e 4446}
413c4f45 4447
0f113f3e
MC		 4448void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4449{
222561fe 4450 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4451 ctx->cert_store = store;
4452}
413c4f45 4453
b50052db
TS		 4454void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4455{
4456 if (store != NULL)
4457 X509_STORE_up_ref(store);
4458 SSL_CTX_set_cert_store(ctx, store);
4459}
4460
0821bcd4 4461int SSL_want(const SSL *s)
0f113f3e 4462{
26a7d938 4463 return s->rwstate;
0f113f3e 4464}
413c4f45 4465
0f113f3e 4466/**
4f43d0e7
BL		 4467 * \brief Set the callback for generating temporary DH keys.
4468 * \param ctx the SSL context.
4469 * \param dh the callback
4470 */
4471
bc36ee62 4472#ifndef OPENSSL_NO_DH
0f113f3e
MC		 4473void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4474 DH *(*dh) (SSL *ssl, int is_export,
4475 int keylength))
4476{
4477 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4478}
f8c3c05d 4479
0f113f3e
MC		 4480void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4481 int keylength))
4482{
4483 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4484}
79df9d62 4485#endif
15d21c2d 4486
ddac1974
NL		 4487#ifndef OPENSSL_NO_PSK
4488int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4489{
4490 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 4491 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4492 return 0;
4493 }
df6da24b 4494 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4495 if (identity_hint != NULL) {
7644a9ae 4496 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4497 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4498 return 0;
4499 } else
df6da24b 4500 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4501 return 1;
4502}
ddac1974
NL		 4503
4504int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4505{
4506 if (s == NULL)
4507 return 0;
4508
0f113f3e
MC		 4509 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4510 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4511 return 0;
4512 }
df6da24b 4513 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4514 if (identity_hint != NULL) {
7644a9ae 4515 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4516 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4517 return 0;
4518 } else
df6da24b 4519 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4520 return 1;
4521}
ddac1974
NL		 4522
4523const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4524{
4525 if (s == NULL || s->session == NULL)
4526 return NULL;
26a7d938 4527 return s->session->psk_identity_hint;
0f113f3e 4528}
ddac1974
NL		 4529
4530const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4531{
4532 if (s == NULL || s->session == NULL)
4533 return NULL;
26a7d938 4534 return s->session->psk_identity;
0f113f3e 4535}
7806f3dd 4536
8cbfcc70 4537void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4538{
4539 s->psk_client_callback = cb;
4540}
7806f3dd 4541
8cbfcc70 4542void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4543{
4544 ctx->psk_client_callback = cb;
4545}
7806f3dd 4546
8cbfcc70 4547void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4548{
4549 s->psk_server_callback = cb;
4550}
7806f3dd 4551
8cbfcc70 4552void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4553{
4554 ctx->psk_server_callback = cb;
4555}
4556#endif
4557
f46184bd
MC		 4558void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4559{
4560 s->psk_find_session_cb = cb;
4561}
4562
4563void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4564 SSL_psk_find_session_cb_func cb)
4565{
4566 ctx->psk_find_session_cb = cb;
4567}
4568
4569void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4570{
4571 s->psk_use_session_cb = cb;
4572}
4573
4574void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4575 SSL_psk_use_session_cb_func cb)
4576{
4577 ctx->psk_use_session_cb = cb;
4578}
4579
0f113f3e
MC		 4580void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4581 void (*cb) (int write_p, int version,
4582 int content_type, const void *buf,
4583 size_t len, SSL *ssl, void *arg))
4584{
4585 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4586}
4587
4588void SSL_set_msg_callback(SSL *ssl,
4589 void (*cb) (int write_p, int version,
4590 int content_type, const void *buf,
4591 size_t len, SSL *ssl, void *arg))
4592{
4593 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4594}
a661b653 4595
7c2d4fee 4596void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4597 int (*cb) (SSL *ssl,
4598 int
4599 is_forward_secure))
4600{
4601 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4602 (void (*)(void))cb);
4603}
4604
7c2d4fee 4605void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4606 int (*cb) (SSL *ssl,
4607 int is_forward_secure))
4608{
4609 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4610 (void (*)(void))cb);
4611}
4612
c649d10d
TS		 4613void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4614 size_t (*cb) (SSL *ssl, int type,
4615 size_t len, void *arg))
4616{
4617 ctx->record_padding_cb = cb;
4618}
4619
4620void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4621{
4622 ctx->record_padding_arg = arg;
4623}
4624
3499327b 4625void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 4626{
4627 return ctx->record_padding_arg;
4628}
4629
4630int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4631{
4632 /* block size of 0 or 1 is basically no padding */
4633 if (block_size == 1)
4634 ctx->block_padding = 0;
4635 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4636 ctx->block_padding = block_size;
4637 else
4638 return 0;
4639 return 1;
4640}
4641
4642void SSL_set_record_padding_callback(SSL *ssl,
4643 size_t (*cb) (SSL *ssl, int type,
4644 size_t len, void *arg))
4645{
4646 ssl->record_padding_cb = cb;
4647}
4648
4649void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4650{
4651 ssl->record_padding_arg = arg;
4652}
4653
3499327b 4654void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d
TS		 4655{
4656 return ssl->record_padding_arg;
4657}
4658
4659int SSL_set_block_padding(SSL *ssl, size_t block_size)
4660{
4661 /* block size of 0 or 1 is basically no padding */
4662 if (block_size == 1)
4663 ssl->block_padding = 0;
4664 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4665 ssl->block_padding = block_size;
4666 else
4667 return 0;
4668 return 1;
4669}
4670
9d0a8bb7
MC		 4671int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4672{
4673 s->num_tickets = num_tickets;
4674
4675 return 1;
4676}
4677
3499327b 4678size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7
MC		 4679{
4680 return s->num_tickets;
4681}
4682
4683int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4684{
4685 ctx->num_tickets = num_tickets;
4686
4687 return 1;
4688}
4689
3499327b 4690size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 4691{
4692 return ctx->num_tickets;
4693}
4694
0f113f3e
MC		 4695/*
4696 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4697 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4698 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4699 * Returns the newly allocated ctx;
8671b898 4700 */
b948e2c5 4701
0f113f3e 4702EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4703{
0f113f3e 4704 ssl_clear_hash_ctx(hash);
bfb0641f 4705 *hash = EVP_MD_CTX_new();
5f3d93e4 4706 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4707 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4708 *hash = NULL;
4709 return NULL;
4710 }
0f113f3e 4711 return *hash;
b948e2c5 4712}
0f113f3e
MC		 4713
4714void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4715{
4716
0d9824c1 4717 EVP_MD_CTX_free(*hash);
0f113f3e 4718 *hash = NULL;
b948e2c5 4719}
a661b653 4720
48fbcbac 4721/* Retrieve handshake hashes */
8c1a5343
MC		 4722int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4723 size_t *hashlen)
48fbcbac 4724{
6e59a892 4725 EVP_MD_CTX *ctx = NULL;
555cbb32 4726 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
8c1a5343
MC		 4727 int hashleni = EVP_MD_CTX_size(hdgst);
4728 int ret = 0;
4729
f63a17d6
MC		 4730 if (hashleni < 0 || (size_t)hashleni > outlen) {
4731 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4732 ERR_R_INTERNAL_ERROR);
28ba2541 4733 goto err;
f63a17d6 4734 }
8c1a5343 4735
bfb0641f 4736 ctx = EVP_MD_CTX_new();
8c1a5343 4737 if (ctx == NULL)
6e59a892 4738 goto err;
8c1a5343 4739
6e59a892 4740 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4741 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4742 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4743 ERR_R_INTERNAL_ERROR);
8c1a5343 4744 goto err;
f63a17d6 4745 }
8c1a5343
MC		 4746
4747 *hashlen = hashleni;
4748
4749 ret = 1;
48fbcbac 4750 err:
bfb0641f 4751 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4752 return ret;
4753}
4754
c04b66b1 4755int SSL_session_reused(const SSL *s)
0f113f3e
MC		 4756{
4757 return s->hit;
4758}
08557cf2 4759
69443116 4760int SSL_is_server(const SSL *s)
0f113f3e
MC		 4761{
4762 return s->server;
4763}
87adf1fa 4764
00db8c60 4765#ifndef OPENSSL_NO_DEPRECATED_1_1_0
47153c72
RS		 4766void SSL_set_debug(SSL *s, int debug)
4767{
4768 /* Old function was do-nothing anyway... */
4769 (void)s;
4770 (void)debug;
4771}
4772#endif
4773
b362ccab 4774void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4775{
4776 s->cert->sec_level = level;
4777}
b362ccab
DSH		 4778
4779int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4780{
4781 return s->cert->sec_level;
4782}
b362ccab 4783
0f113f3e 4784void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4785 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4786 int op, int bits, int nid,
4787 void *other, void *ex))
0f113f3e
MC		 4788{
4789 s->cert->sec_cb = cb;
4790}
b362ccab 4791
a230b26e
EK		 4792int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4793 const SSL_CTX *ctx, int op,
4794 int bits, int nid, void *other,
4795 void *ex) {
0f113f3e
MC		 4796 return s->cert->sec_cb;
4797}
b362ccab
DSH		 4798
4799void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4800{
4801 s->cert->sec_ex = ex;
4802}
b362ccab
DSH		 4803
4804void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4805{
4806 return s->cert->sec_ex;
4807}
b362ccab
DSH		 4808
4809void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4810{
4811 ctx->cert->sec_level = level;
4812}
b362ccab
DSH		 4813
4814int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4815{
4816 return ctx->cert->sec_level;
4817}
b362ccab 4818
0f113f3e 4819void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4820 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4821 int op, int bits, int nid,
4822 void *other, void *ex))
0f113f3e
MC		 4823{
4824 ctx->cert->sec_cb = cb;
4825}
b362ccab 4826
e4646a89
KR		 4827int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4828 const SSL_CTX *ctx,
0f113f3e
MC		 4829 int op, int bits,
4830 int nid,
4831 void *other,
4832 void *ex) {
4833 return ctx->cert->sec_cb;
4834}
b362ccab
DSH		 4835
4836void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4837{
4838 ctx->cert->sec_ex = ex;
4839}
b362ccab
DSH		 4840
4841void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4842{
4843 return ctx->cert->sec_ex;
4844}
b362ccab 4845
8106cb8b
VD		 4846/*
4847 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4848 * can return unsigned long, instead of the generic long return value from the
4849 * control interface.
4850 */
4851unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4852{
4853 return ctx->options;
4854}
a230b26e
EK		 4855
4856unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4857{
4858 return s->options;
4859}
a230b26e 4860
8106cb8b
VD		 4861unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4862{
4863 return ctx->options |= op;
4864}
a230b26e 4865
8106cb8b
VD		 4866unsigned long SSL_set_options(SSL *s, unsigned long op)
4867{
4868 return s->options |= op;
4869}
a230b26e 4870
8106cb8b
VD		 4871unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4872{
4873 return ctx->options &= ~op;
4874}
a230b26e 4875
8106cb8b
VD		 4876unsigned long SSL_clear_options(SSL *s, unsigned long op)
4877{
4878 return s->options &= ~op;
4879}
4880
696178ed
DSH		 4881STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4882{
4883 return s->verified_chain;
4884}
4885
0f113f3e 4886IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4887
4888#ifndef OPENSSL_NO_CT
4889
4890/*
4891 * Moves SCTs from the |src| stack to the |dst| stack.
4892 * The source of each SCT will be set to |origin|.
4893 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4894 * the caller.
4895 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4896 */
a230b26e
EK		 4897static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4898 sct_source_t origin)
ed29e82a
RP		 4899{
4900 int scts_moved = 0;
4901 SCT *sct = NULL;
4902
4903 if (*dst == NULL) {
4904 *dst = sk_SCT_new_null();
4905 if (*dst == NULL) {
4906 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4907 goto err;
4908 }
4909 }
4910
4911 while ((sct = sk_SCT_pop(src)) != NULL) {
4912 if (SCT_set_source(sct, origin) != 1)
4913 goto err;
4914
4915 if (sk_SCT_push(*dst, sct) <= 0)
4916 goto err;
4917 scts_moved += 1;
4918 }
4919
4920 return scts_moved;
a230b26e 4921 err:
ed29e82a 4922 if (sct != NULL)
a230b26e 4923 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4924 return -1;
ed29e82a
RP		 4925}
4926
4927/*
a230b26e 4928 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4929 * Returns the number of SCTs extracted.
a230b26e 4930 */
ed29e82a
RP		 4931static int ct_extract_tls_extension_scts(SSL *s)
4932{
4933 int scts_extracted = 0;
4934
aff8c126
RS		 4935 if (s->ext.scts != NULL) {
4936 const unsigned char *p = s->ext.scts;
4937 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4938
4939 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4940
4941 SCT_LIST_free(scts);
4942 }
4943
4944 return scts_extracted;
4945}
4946
4947/*
4948 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4949 * contains an SCT X509 extension. They will be stored in |s->scts|.
4950 * Returns:
4951 * - The number of SCTs extracted, assuming an OCSP response exists.
4952 * - 0 if no OCSP response exists or it contains no SCTs.
4953 * - A negative integer if an error occurs.
4954 */
4955static int ct_extract_ocsp_response_scts(SSL *s)
4956{
a230b26e 4957# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4958 int scts_extracted = 0;
4959 const unsigned char *p;
4960 OCSP_BASICRESP *br = NULL;
4961 OCSP_RESPONSE *rsp = NULL;
4962 STACK_OF(SCT) *scts = NULL;
4963 int i;
4964
aff8c126 4965 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4966 goto err;
4967
aff8c126
RS		 4968 p = s->ext.ocsp.resp;
4969 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4970 if (rsp == NULL)
4971 goto err;
4972
4973 br = OCSP_response_get1_basic(rsp);
4974 if (br == NULL)
4975 goto err;
4976
4977 for (i = 0; i < OCSP_resp_count(br); ++i) {
4978 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4979
4980 if (single == NULL)
4981 continue;
4982
a230b26e
EK		 4983 scts =
4984 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4985 scts_extracted =
4986 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4987 if (scts_extracted < 0)
4988 goto err;
4989 }
a230b26e 4990 err:
ed29e82a
RP		 4991 SCT_LIST_free(scts);
4992 OCSP_BASICRESP_free(br);
4993 OCSP_RESPONSE_free(rsp);
4994 return scts_extracted;
a230b26e 4995# else
3e41ac35
MC		 4996 /* Behave as if no OCSP response exists */
4997 return 0;
a230b26e 4998# endif
ed29e82a
RP		 4999}
5000
5001/*
5002 * Attempts to extract SCTs from the peer certificate.
5003 * Return the number of SCTs extracted, or a negative integer if an error
5004 * occurs.
5005 */
5006static int ct_extract_x509v3_extension_scts(SSL *s)
5007{
5008 int scts_extracted = 0;
3f3c7d26 5009 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 5010
5011 if (cert != NULL) {
5012 STACK_OF(SCT) *scts =
5013 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5014
5015 scts_extracted =
5016 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5017
5018 SCT_LIST_free(scts);
5019 }
5020
5021 return scts_extracted;
5022}
5023
5024/*
5025 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5026 * response (if it exists) and X509v3 extensions in the certificate.
5027 * Returns NULL if an error occurs.
5028 */
5029const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5030{
5031 if (!s->scts_parsed) {
5032 if (ct_extract_tls_extension_scts(s) < 0 ||
5033 ct_extract_ocsp_response_scts(s) < 0 ||
5034 ct_extract_x509v3_extension_scts(s) < 0)
5035 goto err;
5036
5037 s->scts_parsed = 1;
5038 }
5039 return s->scts;
a230b26e 5040 err:
ed29e82a
RP		 5041 return NULL;
5042}
5043
a230b26e 5044static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 5045 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 5046{
43341433
VD		 5047 return 1;
5048}
5049
a230b26e 5050static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 5051 const STACK_OF(SCT) *scts, void *unused_arg)
5052{
5053 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5054 int i;
ed29e82a 5055
43341433
VD		 5056 for (i = 0; i < count; ++i) {
5057 SCT *sct = sk_SCT_value(scts, i);
5058 int status = SCT_get_validation_status(sct);
5059
5060 if (status == SCT_VALIDATION_STATUS_VALID)
5061 return 1;
5062 }
5063 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5064 return 0;
5065}
5066
5067int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5068 void *arg)
5069{
ed29e82a
RP		 5070 /*
5071 * Since code exists that uses the custom extension handler for CT, look
5072 * for this and throw an error if they have already registered to use CT.
5073 */
5074 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 5075 TLSEXT_TYPE_signed_certificate_timestamp))
5076 {
ed29e82a
RP		 5077 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5078 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5079 return 0;
ed29e82a
RP		 5080 }
5081
ed29e82a 5082 if (callback != NULL) {
a230b26e
EK		 5083 /*
5084 * If we are validating CT, then we MUST accept SCTs served via OCSP
5085 */
ed29e82a 5086 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 5087 return 0;
ed29e82a
RP		 5088 }
5089
43341433
VD		 5090 s->ct_validation_callback = callback;
5091 s->ct_validation_callback_arg = arg;
5092
5093 return 1;
ed29e82a
RP		 5094}
5095
43341433 5096int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 5097 ssl_ct_validation_cb callback, void *arg)
ed29e82a 5098{
ed29e82a
RP		 5099 /*
5100 * Since code exists that uses the custom extension handler for CT, look for
5101 * this and throw an error if they have already registered to use CT.
5102 */
5103 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 5104 TLSEXT_TYPE_signed_certificate_timestamp))
5105 {
ed29e82a
RP		 5106 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5107 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5108 return 0;
ed29e82a
RP		 5109 }
5110
5111 ctx->ct_validation_callback = callback;
5112 ctx->ct_validation_callback_arg = arg;
43341433 5113 return 1;
ed29e82a
RP		 5114}
5115
43341433 5116int SSL_ct_is_enabled(const SSL *s)
ed29e82a 5117{
43341433 5118 return s->ct_validation_callback != NULL;
ed29e82a
RP		 5119}
5120
43341433 5121int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 5122{
43341433 5123 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 5124}
5125
4d482ee2 5126int ssl_validate_ct(SSL *s)
ed29e82a
RP		 5127{
5128 int ret = 0;
3f3c7d26 5129 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 5130 X509 *issuer;
b9aec69a 5131 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 5132 CT_POLICY_EVAL_CTX *ctx = NULL;
5133 const STACK_OF(SCT) *scts;
5134
43341433
VD		 5135 /*
5136 * If no callback is set, the peer is anonymous, or its chain is invalid,
5137 * skip SCT validation - just return success. Applications that continue
5138 * handshakes without certificates, with unverified chains, or pinned leaf
5139 * certificates are outside the scope of the WebPKI and CT.
5140 *
5141 * The above exclusions notwithstanding the vast majority of peers will
5142 * have rather ordinary certificate chains validated by typical
5143 * applications that perform certificate verification and therefore will
5144 * process SCTs when enabled.
5145 */
5146 if (s->ct_validation_callback == NULL || cert == NULL ||
5147 s->verify_result != X509_V_OK ||
a230b26e 5148 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 5149 return 1;
5150
43341433
VD		 5151 /*
5152 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5153 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5154 */
5155 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5156 switch (dane->mtlsa->usage) {
5157 case DANETLS_USAGE_DANE_TA:
5158 case DANETLS_USAGE_DANE_EE:
5159 return 1;
5160 }
ed29e82a
RP		 5161 }
5162
1a37ee94 5163 ctx = CT_POLICY_EVAL_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
ed29e82a 5164 if (ctx == NULL) {
f63a17d6
MC		 5165 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5166 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 5167 goto end;
5168 }
5169
43341433 5170 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 5171 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5172 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5173 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 5174 CT_POLICY_EVAL_CTX_set_time(
5175 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 5176
5177 scts = SSL_get0_peer_scts(s);
5178
43341433
VD		 5179 /*
5180 * This function returns success (> 0) only when all the SCTs are valid, 0
5181 * when some are invalid, and < 0 on various internal errors (out of
5182 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5183 * reason to abort the handshake, that decision is up to the callback.
5184 * Therefore, we error out only in the unexpected case that the return
5185 * value is negative.
5186 *
5187 * XXX: One might well argue that the return value of this function is an
f430ba31 5188 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 5189 * status of each of the provided SCTs. So long as it correctly separates
5190 * the wheat from the chaff it should return success. Failure in this case
5191 * ought to correspond to an inability to carry out its duties.
5192 */
5193 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 5194 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5195 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 5196 goto end;
5197 }
5198
5199 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5200 if (ret < 0)
a230b26e 5201 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 5202 if (!ret)
5203 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5204 SSL_R_CALLBACK_FAILED);
ed29e82a 5205
a230b26e 5206 end:
ed29e82a 5207 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 5208 /*
5209 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5210 * failure return code here. Also the application may wish the complete
5211 * the handshake, and then disconnect cleanly at a higher layer, after
5212 * checking the verification status of the completed connection.
5213 *
5214 * We therefore force a certificate verification failure which will be
5215 * visible via SSL_get_verify_result() and cached as part of any resumed
5216 * session.
5217 *
5218 * Note: the permissive callback is for information gathering only, always
5219 * returns success, and does not affect verification status. Only the
5220 * strict callback or a custom application-specified callback can trigger
5221 * connection failure or record a verification error.
5222 */
5223 if (ret <= 0)
5224 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 5225 return ret;
5226}
5227
43341433
VD		 5228int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5229{
5230 switch (validation_mode) {
5231 default:
5232 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5233 return 0;
5234 case SSL_CT_VALIDATION_PERMISSIVE:
5235 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5236 case SSL_CT_VALIDATION_STRICT:
5237 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5238 }
5239}
5240
5241int SSL_enable_ct(SSL *s, int validation_mode)
5242{
5243 switch (validation_mode) {
5244 default:
5245 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5246 return 0;
5247 case SSL_CT_VALIDATION_PERMISSIVE:
5248 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5249 case SSL_CT_VALIDATION_STRICT:
5250 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5251 }
5252}
5253
ed29e82a
RP		 5254int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5255{
328f36c5 5256 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 5257}
5258
5259int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5260{
5261 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5262}
5263
a230b26e 5264void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 5265{
5266 CTLOG_STORE_free(ctx->ctlog_store);
5267 ctx->ctlog_store = logs;
5268}
5269
5270const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5271{
5272 return ctx->ctlog_store;
5273}
5274
6b1bb98f
BK		 5275#endif /* OPENSSL_NO_CT */
5276
a9c0d8be
DB		 5277void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5278 void *arg)
6b1bb98f 5279{
a9c0d8be
DB		 5280 c->client_hello_cb = cb;
5281 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 5282}
5283
a9c0d8be 5284int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 5285{
5286 if (s->clienthello == NULL)
5287 return 0;
5288 return s->clienthello->isv2;
5289}
5290
a9c0d8be 5291unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 5292{
5293 if (s->clienthello == NULL)
5294 return 0;
5295 return s->clienthello->legacy_version;
5296}
5297
a9c0d8be 5298size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5299{
5300 if (s->clienthello == NULL)
5301 return 0;
5302 if (out != NULL)
5303 *out = s->clienthello->random;
5304 return SSL3_RANDOM_SIZE;
5305}
5306
a9c0d8be 5307size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5308{
5309 if (s->clienthello == NULL)
5310 return 0;
5311 if (out != NULL)
5312 *out = s->clienthello->session_id;
5313 return s->clienthello->session_id_len;
5314}
5315
a9c0d8be 5316size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5317{
5318 if (s->clienthello == NULL)
5319 return 0;
5320 if (out != NULL)
5321 *out = PACKET_data(&s->clienthello->ciphersuites);
5322 return PACKET_remaining(&s->clienthello->ciphersuites);
5323}
5324
a9c0d8be 5325size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5326{
5327 if (s->clienthello == NULL)
5328 return 0;
5329 if (out != NULL)
5330 *out = s->clienthello->compressions;
5331 return s->clienthello->compressions_len;
5332}
5333
a9c0d8be 5334int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5335{
5336 RAW_EXTENSION *ext;
5337 int *present;
5338 size_t num = 0, i;
5339
5340 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5341 return 0;
5342 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5343 ext = s->clienthello->pre_proc_exts + i;
5344 if (ext->present)
5345 num++;
5346 }
6fda11ae 5347 if (num == 0) {
5348 *out = NULL;
5349 *outlen = 0;
5350 return 1;
5351 }
cdb10bae
RS		 5352 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5353 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5354 ERR_R_MALLOC_FAILURE);
193b5d76 5355 return 0;
cdb10bae 5356 }
193b5d76
BK		 5357 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5358 ext = s->clienthello->pre_proc_exts + i;
5359 if (ext->present) {
5360 if (ext->received_order >= num)
5361 goto err;
5362 present[ext->received_order] = ext->type;
5363 }
5364 }
5365 *out = present;
5366 *outlen = num;
5367 return 1;
5368 err:
5369 OPENSSL_free(present);
5370 return 0;
5371}
5372
a9c0d8be 5373int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5374 size_t *outlen)
5375{
5376 size_t i;
5377 RAW_EXTENSION *r;
5378
5379 if (s->clienthello == NULL)
5380 return 0;
5381 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5382 r = s->clienthello->pre_proc_exts + i;
5383 if (r->present && r->type == type) {
5384 if (out != NULL)
5385 *out = PACKET_data(&r->data);
5386 if (outlen != NULL)
5387 *outlen = PACKET_remaining(&r->data);
5388 return 1;
5389 }
5390 }
5391 return 0;
5392}
2faa1b48 5393
a58eb06d
TS		 5394int SSL_free_buffers(SSL *ssl)
5395{
5396 RECORD_LAYER *rl = &ssl->rlayer;
5397
5398 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5399 return 0;
5400
5401 RECORD_LAYER_release(rl);
5402 return 1;
5403}
5404
5405int SSL_alloc_buffers(SSL *ssl)
5406{
5407 return ssl3_setup_buffers(ssl);
5408}
5409
2faa1b48
CB		 5410void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5411{
5412 ctx->keylog_callback = cb;
5413}
5414
5415SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5416{
5417 return ctx->keylog_callback;
5418}
5419
5420static int nss_keylog_int(const char *prefix,
5421 SSL *ssl,
5422 const uint8_t *parameter_1,
5423 size_t parameter_1_len,
5424 const uint8_t *parameter_2,
5425 size_t parameter_2_len)
5426{
5427 char *out = NULL;
5428 char *cursor = NULL;
5429 size_t out_len = 0;
5430 size_t i;
5431 size_t prefix_len;
5432
20870286
P		 5433 if (ssl->ctx->keylog_callback == NULL)
5434 return 1;
2faa1b48
CB		 5435
5436 /*
5437 * Our output buffer will contain the following strings, rendered with
5438 * space characters in between, terminated by a NULL character: first the
5439 * prefix, then the first parameter, then the second parameter. The
5440 * meaning of each parameter depends on the specific key material being
5441 * logged. Note that the first and second parameters are encoded in
5442 * hexadecimal, so we need a buffer that is twice their lengths.
5443 */
5444 prefix_len = strlen(prefix);
e931f370 5445 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
2faa1b48 5446 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 5447 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5448 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5449 return 0;
5450 }
5451
5452 strcpy(cursor, prefix);
5453 cursor += prefix_len;
5454 *cursor++ = ' ';
5455
5456 for (i = 0; i < parameter_1_len; i++) {
5457 sprintf(cursor, "%02x", parameter_1[i]);
5458 cursor += 2;
5459 }
5460 *cursor++ = ' ';
5461
5462 for (i = 0; i < parameter_2_len; i++) {
5463 sprintf(cursor, "%02x", parameter_2[i]);
5464 cursor += 2;
5465 }
5466 *cursor = '\0';
5467
5468 ssl->ctx->keylog_callback(ssl, (const char *)out);
e931f370 5469 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 5470 return 1;
5471
5472}
5473
5474int ssl_log_rsa_client_key_exchange(SSL *ssl,
5475 const uint8_t *encrypted_premaster,
5476 size_t encrypted_premaster_len,
5477 const uint8_t *premaster,
5478 size_t premaster_len)
5479{
5480 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 5481 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5482 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5483 return 0;
5484 }
5485
f0deb4d3 5486 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5487 return nss_keylog_int("RSA",
5488 ssl,
5489 encrypted_premaster,
f0deb4d3 5490 8,
2faa1b48
CB		 5491 premaster,
5492 premaster_len);
5493}
5494
2c7bd692
CB		 5495int ssl_log_secret(SSL *ssl,
5496 const char *label,
5497 const uint8_t *secret,
5498 size_t secret_len)
2faa1b48 5499{
2c7bd692 5500 return nss_keylog_int(label,
2faa1b48 5501 ssl,
555cbb32 5502 ssl->s3.client_random,
2c7bd692
CB		 5503 SSL3_RANDOM_SIZE,
5504 secret,
5505 secret_len);
2faa1b48
CB		 5506}
5507
ccb8e6e0
BK		 5508#define SSLV2_CIPHER_LEN 3
5509
f63a17d6 5510int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5511{
ccb8e6e0 5512 int n;
ccb8e6e0
BK		 5513
5514 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5515
5516 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5517 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5518 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5519 return 0;
ccb8e6e0
BK		 5520 }
5521
5522 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5523 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 5524 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5525 return 0;
ccb8e6e0
BK		 5526 }
5527
555cbb32
TS		 5528 OPENSSL_free(s->s3.tmp.ciphers_raw);
5529 s->s3.tmp.ciphers_raw = NULL;
5530 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5531
5532 if (sslv2format) {
5533 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5534 PACKET sslv2ciphers = *cipher_suites;
5535 unsigned int leadbyte;
5536 unsigned char *raw;
5537
5538 /*
5539 * We store the raw ciphers list in SSLv3+ format so we need to do some
5540 * preprocessing to convert the list first. If there are any SSLv2 only
5541 * ciphersuites with a non-zero leading byte then we are going to
5542 * slightly over allocate because we won't store those. But that isn't a
5543 * problem.
5544 */
5545 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 5546 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 5547 if (raw == NULL) {
f63a17d6
MC		 5548 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5549 ERR_R_MALLOC_FAILURE);
5550 return 0;
ccb8e6e0 5551 }
555cbb32 5552 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5553 PACKET_remaining(&sslv2ciphers) > 0;
5554 raw += TLS_CIPHER_LEN) {
5555 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5556 || (leadbyte == 0
5557 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5558 TLS_CIPHER_LEN))
5559 || (leadbyte != 0
5560 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5561 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5562 SSL_R_BAD_PACKET);
555cbb32
TS		 5563 OPENSSL_free(s->s3.tmp.ciphers_raw);
5564 s->s3.tmp.ciphers_raw = NULL;
5565 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 5566 return 0;
ccb8e6e0
BK		 5567 }
5568 if (leadbyte == 0)
555cbb32 5569 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 5570 }
555cbb32
TS		 5571 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5572 &s->s3.tmp.ciphers_rawlen)) {
f63a17d6
MC		 5573 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5574 ERR_R_INTERNAL_ERROR);
5575 return 0;
ccb8e6e0 5576 }
90134d98 5577 return 1;
90134d98
BK		 5578}
5579
5580int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5581 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5582 STACK_OF(SSL_CIPHER) **scsvs)
5583{
90134d98
BK		 5584 PACKET pkt;
5585
5586 if (!PACKET_buf_init(&pkt, bytes, len))
5587 return 0;
f63a17d6 5588 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5589}
5590
5591int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5592 STACK_OF(SSL_CIPHER) **skp,
5593 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5594 int sslv2format, int fatal)
90134d98
BK		 5595{
5596 const SSL_CIPHER *c;
5597 STACK_OF(SSL_CIPHER) *sk = NULL;
5598 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5599 int n;
5600 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5601 unsigned char cipher[SSLV2_CIPHER_LEN];
5602
5603 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5604
5605 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5606 if (fatal)
5607 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5608 SSL_R_NO_CIPHERS_SPECIFIED);
5609 else
5610 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5611 return 0;
5612 }
5613
5614 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5615 if (fatal)
5616 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5617 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5618 else
5619 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5620 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5621 return 0;
5622 }
5623
5624 sk = sk_SSL_CIPHER_new_null();
5625 scsvs = sk_SSL_CIPHER_new_null();
5626 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5627 if (fatal)
5628 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5629 ERR_R_MALLOC_FAILURE);
5630 else
5631 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5632 goto err;
5633 }
ccb8e6e0
BK		 5634
5635 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5636 /*
5637 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5638 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5639 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5640 */
5641 if (sslv2format && cipher[0] != '\0')
5642 continue;
5643
ccb8e6e0
BK		 5644 /* For SSLv2-compat, ignore leading 0-byte. */
5645 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5646 if (c != NULL) {
90134d98
BK		 5647 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5648 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5649 if (fatal)
5650 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5651 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5652 else
5653 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5654 goto err;
5655 }
5656 }
5657 }
5658 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5659 if (fatal)
5660 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5661 SSL_R_BAD_LENGTH);
5662 else
5663 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5664 goto err;
5665 }
5666
90134d98
BK		 5667 if (skp != NULL)
5668 *skp = sk;
5669 else
5670 sk_SSL_CIPHER_free(sk);
5671 if (scsvs_out != NULL)
5672 *scsvs_out = scsvs;
5673 else
5674 sk_SSL_CIPHER_free(scsvs);
5675 return 1;
ccb8e6e0
BK		 5676 err:
5677 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5678 sk_SSL_CIPHER_free(scsvs);
5679 return 0;
ccb8e6e0 5680}
3fc8d856
MC		 5681
5682int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5683{
5684 ctx->max_early_data = max_early_data;
5685
5686 return 1;
5687}
5688
46dcb945 5689uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5690{
5691 return ctx->max_early_data;
5692}
5693
5694int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5695{
5696 s->max_early_data = max_early_data;
5697
5698 return 1;
5699}
5700
a8e75d56 5701uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5702{
5703 return s->max_early_data;
5704}
ae3947de 5705
4e8548e8
MC		 5706int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5707{
5708 ctx->recv_max_early_data = recv_max_early_data;
5709
5710 return 1;
5711}
5712
5713uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5714{
5715 return ctx->recv_max_early_data;
5716}
5717
5718int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5719{
5720 s->recv_max_early_data = recv_max_early_data;
5721
5722 return 1;
5723}
5724
5725uint32_t SSL_get_recv_max_early_data(const SSL *s)
5726{
5727 return s->recv_max_early_data;
5728}
5729
cf72c757
F		 5730__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5731{
5732 /* Return any active Max Fragment Len extension */
5733 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5734 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5735
5736 /* return current SSL connection setting */
5737 return ssl->max_send_fragment;
5738}
5739
5740__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5741{
5742 /* Return a value regarding an active Max Fragment Len extension */
5743 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5744 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5745 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5746
5747 /* else limit |split_send_fragment| to current |max_send_fragment| */
5748 if (ssl->split_send_fragment > ssl->max_send_fragment)
5749 return ssl->max_send_fragment;
5750
5751 /* return current SSL connection setting */
5752 return ssl->split_send_fragment;
5753}
042c5753
MC		 5754
5755int SSL_stateless(SSL *s)
5756{
5757 int ret;
5758
5759 /* Ensure there is no state left over from a previous invocation */
5760 if (!SSL_clear(s))
d6bb50a5 5761 return 0;
042c5753
MC		 5762
5763 ERR_clear_error();
5764
555cbb32 5765 s->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 5766 ret = SSL_accept(s);
555cbb32 5767 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 5768
d6bb50a5 5769 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5770 return 1;
5771
e440f513
MC		 5772 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5773 return 0;
5774
5775 return -1;
042c5753 5776}
9d75dce3 5777
e97be718
MC		 5778void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5779{
5780 ctx->pha_enabled = val;
5781}
5782
32097b33 5783void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 5784{
32097b33 5785 ssl->pha_enabled = val;
9d75dce3
TS		 5786}
5787
5788int SSL_verify_client_post_handshake(SSL *ssl)
5789{
5790 if (!SSL_IS_TLS13(ssl)) {
5791 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5792 return 0;
5793 }
5794 if (!ssl->server) {
5795 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5796 return 0;
5797 }
5798
5799 if (!SSL_is_init_finished(ssl)) {
5800 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5801 return 0;
5802 }
5803
5804 switch (ssl->post_handshake_auth) {
5805 case SSL_PHA_NONE:
5806 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5807 return 0;
5808 default:
5809 case SSL_PHA_EXT_SENT:
5810 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5811 return 0;
5812 case SSL_PHA_EXT_RECEIVED:
5813 break;
5814 case SSL_PHA_REQUEST_PENDING:
5815 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5816 return 0;
5817 case SSL_PHA_REQUESTED:
5818 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5819 return 0;
5820 }
5821
5822 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5823
5824 /* checks verify_mode and algorithm_auth */
5825 if (!send_certificate_request(ssl)) {
5826 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5827 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5828 return 0;
5829 }
5830
5831 ossl_statem_set_in_init(ssl, 1);
5832 return 1;
5833}
df0fed9a
TS		 5834
5835int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5836 SSL_CTX_generate_session_ticket_fn gen_cb,
5837 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5838 void *arg)
5839{
5840 ctx->generate_ticket_cb = gen_cb;
5841 ctx->decrypt_ticket_cb = dec_cb;
5842 ctx->ticket_cb_data = arg;
5843 return 1;
5844}
c9598459
MC		 5845
5846void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5847 SSL_allow_early_data_cb_fn cb,
5848 void *arg)
5849{
5850 ctx->allow_early_data_cb = cb;
5851 ctx->allow_early_data_cb_data = arg;
5852}
5853
5854void SSL_set_allow_early_data_cb(SSL *s,
5855 SSL_allow_early_data_cb_fn cb,
5856 void *arg)
5857{
5858 s->allow_early_data_cb = cb;
5859 s->allow_early_data_cb_data = arg;
5860}
c8f6c28a
MC		 5861
5862const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5863 int nid,
5864 const char *properties)
5865{
5fcb97c6
MC		 5866 EVP_CIPHER *ciph;
5867
709b5e8a 5868#ifndef OPENSSL_NO_ENGINE
0618b62c
MC		 5869 ENGINE *eng;
5870
c8f6c28a
MC		 5871 /*
5872 * If there is an Engine available for this cipher we use the "implicit"
5873 * form to ensure we use that engine later.
5874 */
0618b62c
MC		 5875 eng = ENGINE_get_cipher_engine(nid);
5876 if (eng != NULL) {
5877 ENGINE_finish(eng);
c8f6c28a 5878 return EVP_get_cipherbynid(nid);
0618b62c 5879 }
709b5e8a 5880#endif
c8f6c28a 5881
5fcb97c6
MC		 5882 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5883 ERR_set_mark();
5884 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5885 ERR_pop_to_mark();
5886 return ciph;
c8f6c28a
MC		 5887}
5888
5889
5890int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5891{
5892 /* Don't up-ref an implicit EVP_CIPHER */
5893 if (EVP_CIPHER_provider(cipher) == NULL)
5894 return 1;
5895
5896 /*
5897 * The cipher was explicitly fetched and therefore it is safe to cast
5898 * away the const
5899 */
5900 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5901}
5902
5903void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5904{
5905 if (cipher == NULL)
5906 return;
5907
5908 if (EVP_CIPHER_provider(cipher) != NULL) {
5909 /*
5910 * The cipher was explicitly fetched and therefore it is safe to cast
5911 * away the const
5912 */
5913 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5914 }
5915}
5916
5917const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5918 int nid,
5919 const char *properties)
5920{
5fcb97c6
MC		 5921 EVP_MD *md;
5922
709b5e8a 5923#ifndef OPENSSL_NO_ENGINE
0618b62c
MC		 5924 ENGINE *eng;
5925
c8f6c28a
MC		 5926 /*
5927 * If there is an Engine available for this digest we use the "implicit"
5928 * form to ensure we use that engine later.
5929 */
0618b62c
MC		 5930 eng = ENGINE_get_digest_engine(nid);
5931 if (eng != NULL) {
5932 ENGINE_finish(eng);
c8f6c28a 5933 return EVP_get_digestbynid(nid);
0618b62c 5934 }
709b5e8a 5935#endif
c8f6c28a
MC		 5936
5937 /* Otherwise we do an explicit fetch */
5fcb97c6
MC		 5938 ERR_set_mark();
5939 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5940 ERR_pop_to_mark();
5941 return md;
c8f6c28a
MC		 5942}
5943
5944int ssl_evp_md_up_ref(const EVP_MD *md)
5945{
5946 /* Don't up-ref an implicit EVP_MD */
5947 if (EVP_MD_provider(md) == NULL)
5948 return 1;
5949
5950 /*
5951 * The digest was explicitly fetched and therefore it is safe to cast
5952 * away the const
5953 */
5954 return EVP_MD_up_ref((EVP_MD *)md);
5955}
5956
5957void ssl_evp_md_free(const EVP_MD *md)
5958{
5959 if (md == NULL)
5960 return;
5961
5962 if (EVP_MD_provider(md) != NULL) {
5963 /*
5964 * The digest was explicitly fetched and therefore it is safe to cast
5965 * away the const
5966 */
5967 EVP_MD_free((EVP_MD *)md);
5968 }
5969}
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