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Deprecate the low level SRP APIs
[thirdparty/openssl.git] / ssl / ssl_lib.c
CommitLineData
0f113f3e 1/*
4333b89f 2 * Copyright 1995-2021 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>
67c8e7f4 18#include <openssl/ocsp.h>
3c27208f
RS		 19#include <openssl/dh.h>
20#include <openssl/engine.h>
07bbc92c 21#include <openssl/async.h>
3c27208f 22#include <openssl/ct.h>
77359d22 23#include <openssl/trace.h>
67dc995e 24#include "internal/cryptlib.h"
cd420b0b 25#include "internal/refcount.h"
50ec7505 26#include "internal/ktls.h"
0f113f3e 27
ec27e619
MC		 28static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
29 SSL_MAC_BUF *mac, size_t macsize)
fce78bd4 30{
fce78bd4
BE		 31 return ssl_undefined_function(ssl);
32}
33
34static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
35 int t)
36{
fce78bd4
BE		 37 return ssl_undefined_function(ssl);
38}
39
40static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
41 unsigned char *s, size_t t, size_t *u)
42{
fce78bd4
BE		 43 return ssl_undefined_function(ssl);
44}
45
46static int ssl_undefined_function_4(SSL *ssl, int r)
47{
fce78bd4
BE		 48 return ssl_undefined_function(ssl);
49}
50
51static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
52 unsigned char *t)
53{
fce78bd4
BE		 54 return ssl_undefined_function(ssl);
55}
56
57static int ssl_undefined_function_6(int r)
58{
fce78bd4
BE		 59 return ssl_undefined_function(NULL);
60}
61
62static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
63 const char *t, size_t u,
64 const unsigned char *v, size_t w, int x)
65{
fce78bd4
BE		 66 return ssl_undefined_function(ssl);
67}
68
0f113f3e 69SSL3_ENC_METHOD ssl3_undef_enc_method = {
fce78bd4
BE		 70 ssl_undefined_function_1,
71 ssl_undefined_function_2,
0f113f3e 72 ssl_undefined_function,
fce78bd4
BE		 73 ssl_undefined_function_3,
74 ssl_undefined_function_4,
75 ssl_undefined_function_5,
0f113f3e
MC		 76 NULL, /* client_finished_label */
77 0, /* client_finished_label_len */
78 NULL, /* server_finished_label */
79 0, /* server_finished_label_len */
fce78bd4
BE		 80 ssl_undefined_function_6,
81 ssl_undefined_function_7,
0f113f3e 82};
d02b48c6 83
07bbc92c
MC		 84struct ssl_async_args {
85 SSL *s;
86 void *buf;
348240c6 87 size_t num;
a230b26e 88 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 89 union {
eda75751 90 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 91 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 92 int (*func_other) (SSL *);
add2f5ca 93 } f;
07bbc92c
MC		 94};
95
919ba009
VD		 96static const struct {
97 uint8_t mtype;
98 uint8_t ord;
a230b26e 99 int nid;
919ba009 100} dane_mds[] = {
a230b26e
EK		 101 {
102 DANETLS_MATCHING_FULL, 0, NID_undef
103 },
104 {
105 DANETLS_MATCHING_2256, 1, NID_sha256
106 },
107 {
108 DANETLS_MATCHING_2512, 2, NID_sha512
109 },
919ba009
VD		 110};
111
112static int dane_ctx_enable(struct dane_ctx_st *dctx)
113{
114 const EVP_MD **mdevp;
115 uint8_t *mdord;
116 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 117 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 118 size_t i;
119
5ae4ceb9
VD		 120 if (dctx->mdevp != NULL)
121 return 1;
122
919ba009
VD		 123 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
124 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
125
126 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 127 OPENSSL_free(mdord);
919ba009 128 OPENSSL_free(mdevp);
6849b73c 129 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 130 return 0;
131 }
132
133 /* Install default entries */
134 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
135 const EVP_MD *md;
136
137 if (dane_mds[i].nid == NID_undef ||
138 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
139 continue;
140 mdevp[dane_mds[i].mtype] = md;
141 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
142 }
143
144 dctx->mdevp = mdevp;
145 dctx->mdord = mdord;
146 dctx->mdmax = mdmax;
147
148 return 1;
149}
150
151static void dane_ctx_final(struct dane_ctx_st *dctx)
152{
153 OPENSSL_free(dctx->mdevp);
154 dctx->mdevp = NULL;
155
156 OPENSSL_free(dctx->mdord);
157 dctx->mdord = NULL;
158 dctx->mdmax = 0;
159}
160
161static void tlsa_free(danetls_record *t)
162{
163 if (t == NULL)
164 return;
165 OPENSSL_free(t->data);
166 EVP_PKEY_free(t->spki);
167 OPENSSL_free(t);
168}
169
b9aec69a 170static void dane_final(SSL_DANE *dane)
919ba009
VD		 171{
172 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
173 dane->trecs = NULL;
174
175 sk_X509_pop_free(dane->certs, X509_free);
176 dane->certs = NULL;
177
178 X509_free(dane->mcert);
179 dane->mcert = NULL;
180 dane->mtlsa = NULL;
181 dane->mdpth = -1;
182 dane->pdpth = -1;
183}
184
185/*
186 * dane_copy - Copy dane configuration, sans verification state.
187 */
188static int ssl_dane_dup(SSL *to, SSL *from)
189{
190 int num;
191 int i;
192
193 if (!DANETLS_ENABLED(&from->dane))
194 return 1;
195
e431363f 196 num = sk_danetls_record_num(from->dane.trecs);
919ba009 197 dane_final(&to->dane);
5ae4ceb9 198 to->dane.flags = from->dane.flags;
9f6b22b8 199 to->dane.dctx = &to->ctx->dane;
7a908204 200 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 201
202 if (to->dane.trecs == NULL) {
6849b73c 203 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
9f6b22b8
VD		 204 return 0;
205 }
919ba009 206
919ba009
VD		 207 for (i = 0; i < num; ++i) {
208 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 209
919ba009
VD		 210 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
211 t->data, t->dlen) <= 0)
212 return 0;
213 }
214 return 1;
215}
216
a230b26e
EK		 217static int dane_mtype_set(struct dane_ctx_st *dctx,
218 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 219{
220 int i;
221
222 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
6849b73c 223 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 224 return 0;
225 }
226
227 if (mtype > dctx->mdmax) {
228 const EVP_MD **mdevp;
229 uint8_t *mdord;
a230b26e 230 int n = ((int)mtype) + 1;
919ba009
VD		 231
232 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
233 if (mdevp == NULL) {
6849b73c 234 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 235 return -1;
236 }
237 dctx->mdevp = mdevp;
238
239 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
240 if (mdord == NULL) {
6849b73c 241 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 242 return -1;
243 }
244 dctx->mdord = mdord;
245
246 /* Zero-fill any gaps */
a230b26e 247 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 248 mdevp[i] = NULL;
249 mdord[i] = 0;
250 }
251
252 dctx->mdmax = mtype;
253 }
254
255 dctx->mdevp[mtype] = md;
256 /* Coerce ordinal of disabled matching types to 0 */
257 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
258
259 return 1;
260}
261
b9aec69a 262static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 263{
264 if (mtype > dane->dctx->mdmax)
265 return NULL;
266 return dane->dctx->mdevp[mtype];
267}
268
a230b26e
EK		 269static int dane_tlsa_add(SSL_DANE *dane,
270 uint8_t usage,
271 uint8_t selector,
6d4313f0 272 uint8_t mtype, const unsigned char *data, size_t dlen)
919ba009
VD		 273{
274 danetls_record *t;
275 const EVP_MD *md = NULL;
276 int ilen = (int)dlen;
277 int i;
9f6b22b8 278 int num;
919ba009
VD		 279
280 if (dane->trecs == NULL) {
6849b73c 281 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
919ba009
VD		 282 return -1;
283 }
284
285 if (ilen < 0 || dlen != (size_t)ilen) {
6849b73c 286 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
919ba009
VD		 287 return 0;
288 }
289
290 if (usage > DANETLS_USAGE_LAST) {
6849b73c 291 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
919ba009
VD		 292 return 0;
293 }
294
295 if (selector > DANETLS_SELECTOR_LAST) {
6849b73c 296 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
919ba009
VD		 297 return 0;
298 }
299
300 if (mtype != DANETLS_MATCHING_FULL) {
301 md = tlsa_md_get(dane, mtype);
302 if (md == NULL) {
6849b73c 303 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
919ba009
VD		 304 return 0;
305 }
306 }
307
308 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
6849b73c 309 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
919ba009
VD		 310 return 0;
311 }
312 if (!data) {
6849b73c 313 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
919ba009
VD		 314 return 0;
315 }
316
317 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
6849b73c 318 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 319 return -1;
320 }
321
322 t->usage = usage;
323 t->selector = selector;
324 t->mtype = mtype;
348240c6 325 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 326 if (t->data == NULL) {
327 tlsa_free(t);
6849b73c 328 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 329 return -1;
330 }
348240c6
MC		 331 memcpy(t->data, data, dlen);
332 t->dlen = dlen;
919ba009
VD		 333
334 /* Validate and cache full certificate or public key */
335 if (mtype == DANETLS_MATCHING_FULL) {
336 const unsigned char *p = data;
337 X509 *cert = NULL;
338 EVP_PKEY *pkey = NULL;
339
340 switch (selector) {
341 case DANETLS_SELECTOR_CERT:
348240c6 342 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 343 dlen != (size_t)(p - data)) {
344 tlsa_free(t);
6849b73c 345 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
919ba009
VD		 346 return 0;
347 }
348 if (X509_get0_pubkey(cert) == NULL) {
349 tlsa_free(t);
6849b73c 350 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
919ba009
VD		 351 return 0;
352 }
353
354 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
355 X509_free(cert);
356 break;
357 }
358
359 /*
360 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
361 * records that contain full certificates of trust-anchors that are
362 * not present in the wire chain. For usage PKIX-TA(0), we augment
363 * the chain with untrusted Full(0) certificates from DNS, in case
364 * they are missing from the chain.
365 */
366 if ((dane->certs == NULL &&
367 (dane->certs = sk_X509_new_null()) == NULL) ||
368 !sk_X509_push(dane->certs, cert)) {
6849b73c 369 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 370 X509_free(cert);
371 tlsa_free(t);
372 return -1;
373 }
374 break;
375
376 case DANETLS_SELECTOR_SPKI:
348240c6 377 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 378 dlen != (size_t)(p - data)) {
379 tlsa_free(t);
6849b73c 380 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
919ba009
VD		 381 return 0;
382 }
383
384 /*
385 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
386 * records that contain full bare keys of trust-anchors that are
387 * not present in the wire chain.
388 */
389 if (usage == DANETLS_USAGE_DANE_TA)
390 t->spki = pkey;
391 else
392 EVP_PKEY_free(pkey);
393 break;
394 }
395 }
396
397 /*-
398 * Find the right insertion point for the new record.
399 *
400 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
401 * they can be processed first, as they require no chain building, and no
402 * expiration or hostname checks. Because DANE-EE(3) is numerically
403 * largest, this is accomplished via descending sort by "usage".
404 *
405 * We also sort in descending order by matching ordinal to simplify
406 * the implementation of digest agility in the verification code.
407 *
408 * The choice of order for the selector is not significant, so we
409 * use the same descending order for consistency.
410 */
9f6b22b8
VD		 411 num = sk_danetls_record_num(dane->trecs);
412 for (i = 0; i < num; ++i) {
919ba009 413 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 414
919ba009
VD		 415 if (rec->usage > usage)
416 continue;
417 if (rec->usage < usage)
418 break;
419 if (rec->selector > selector)
420 continue;
421 if (rec->selector < selector)
422 break;
423 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
424 continue;
425 break;
426 }
427
428 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
429 tlsa_free(t);
6849b73c 430 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 431 return -1;
432 }
433 dane->umask |= DANETLS_USAGE_BIT(usage);
434
435 return 1;
436}
437
c8feba72
BK		 438/*
439 * Return 0 if there is only one version configured and it was disabled
440 * at configure time. Return 1 otherwise.
441 */
442static int ssl_check_allowed_versions(int min_version, int max_version)
443{
444 int minisdtls = 0, maxisdtls = 0;
445
446 /* Figure out if we're doing DTLS versions or TLS versions */
447 if (min_version == DTLS1_BAD_VER
448 || min_version >> 8 == DTLS1_VERSION_MAJOR)
449 minisdtls = 1;
450 if (max_version == DTLS1_BAD_VER
451 || max_version >> 8 == DTLS1_VERSION_MAJOR)
452 maxisdtls = 1;
453 /* A wildcard version of 0 could be DTLS or TLS. */
454 if ((minisdtls && !maxisdtls && max_version != 0)
455 || (maxisdtls && !minisdtls && min_version != 0)) {
456 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
457 return 0;
458 }
459
460 if (minisdtls || maxisdtls) {
461 /* Do DTLS version checks. */
462 if (min_version == 0)
463 /* Ignore DTLS1_BAD_VER */
464 min_version = DTLS1_VERSION;
465 if (max_version == 0)
466 max_version = DTLS1_2_VERSION;
467#ifdef OPENSSL_NO_DTLS1_2
468 if (max_version == DTLS1_2_VERSION)
469 max_version = DTLS1_VERSION;
470#endif
471#ifdef OPENSSL_NO_DTLS1
472 if (min_version == DTLS1_VERSION)
473 min_version = DTLS1_2_VERSION;
474#endif
79b4444d
DMSP		 475 /* Done massaging versions; do the check. */
476 if (0
c8feba72
BK		 477#ifdef OPENSSL_NO_DTLS1
478 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
479 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
480#endif
481#ifdef OPENSSL_NO_DTLS1_2
482 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
483 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
484#endif
485 )
486 return 0;
487 } else {
488 /* Regular TLS version checks. */
79b4444d
DMSP		 489 if (min_version == 0)
490 min_version = SSL3_VERSION;
491 if (max_version == 0)
492 max_version = TLS1_3_VERSION;
c8feba72 493#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 494 if (max_version == TLS1_3_VERSION)
495 max_version = TLS1_2_VERSION;
c8feba72
BK		 496#endif
497#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 498 if (max_version == TLS1_2_VERSION)
499 max_version = TLS1_1_VERSION;
c8feba72
BK		 500#endif
501#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 502 if (max_version == TLS1_1_VERSION)
503 max_version = TLS1_VERSION;
c8feba72
BK		 504#endif
505#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 506 if (max_version == TLS1_VERSION)
507 max_version = SSL3_VERSION;
c8feba72
BK		 508#endif
509#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 510 if (min_version == SSL3_VERSION)
511 min_version = TLS1_VERSION;
c8feba72
BK		 512#endif
513#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 514 if (min_version == TLS1_VERSION)
515 min_version = TLS1_1_VERSION;
c8feba72
BK		 516#endif
517#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 518 if (min_version == TLS1_1_VERSION)
519 min_version = TLS1_2_VERSION;
c8feba72
BK		 520#endif
521#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 522 if (min_version == TLS1_2_VERSION)
523 min_version = TLS1_3_VERSION;
c8feba72 524#endif
79b4444d
DMSP		 525 /* Done massaging versions; do the check. */
526 if (0
c8feba72
BK		 527#ifdef OPENSSL_NO_SSL3
528 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
529#endif
530#ifdef OPENSSL_NO_TLS1
531 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
532#endif
533#ifdef OPENSSL_NO_TLS1_1
534 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
535#endif
536#ifdef OPENSSL_NO_TLS1_2
537 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
538#endif
539#ifdef OPENSSL_NO_TLS1_3
540 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
541#endif
542 )
543 return 0;
544 }
545 return 1;
546}
547
08073700
RB		 548#if defined(__TANDEM) && defined(OPENSSL_VPROC)
549/*
550 * Define a VPROC function for HP NonStop build ssl library.
551 * This is used by platform version identification tools.
552 * Do not inline this procedure or make it static.
553 */
554# define OPENSSL_VPROC_STRING_(x) x##_SSL
555# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
556# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
557void OPENSSL_VPROC_FUNC(void) {}
558#endif
559
560
d31fb0b5
RS		 561static void clear_ciphers(SSL *s)
562{
563 /* clear the current cipher */
564 ssl_clear_cipher_ctx(s);
565 ssl_clear_hash_ctx(&s->read_hash);
566 ssl_clear_hash_ctx(&s->write_hash);
567}
568
4f43d0e7 569int SSL_clear(SSL *s)
0f113f3e 570{
0f113f3e 571 if (s->method == NULL) {
6849b73c 572 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 573 return 0;
0f113f3e 574 }
d02b48c6 575
0f113f3e
MC		 576 if (ssl_clear_bad_session(s)) {
577 SSL_SESSION_free(s->session);
578 s->session = NULL;
579 }
9368f865
MC		 580 SSL_SESSION_free(s->psksession);
581 s->psksession = NULL;
add8d0e9
MC		 582 OPENSSL_free(s->psksession_id);
583 s->psksession_id = NULL;
584 s->psksession_id_len = 0;
808d1601 585 s->hello_retry_request = 0;
36ff232c 586 s->sent_tickets = 0;
d62bfb39 587
0f113f3e
MC		 588 s->error = 0;
589 s->hit = 0;
590 s->shutdown = 0;
d02b48c6 591
0f113f3e 592 if (s->renegotiate) {
6849b73c 593 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
0f113f3e
MC		 594 return 0;
595 }
d02b48c6 596
fe3a3291 597 ossl_statem_clear(s);
413c4f45 598
0f113f3e
MC		 599 s->version = s->method->version;
600 s->client_version = s->version;
601 s->rwstate = SSL_NOTHING;
d02b48c6 602
25aaa98a
RS		 603 BUF_MEM_free(s->init_buf);
604 s->init_buf = NULL;
d31fb0b5 605 clear_ciphers(s);
0f113f3e 606 s->first_packet = 0;
d02b48c6 607
44c04a2e
MC		 608 s->key_update = SSL_KEY_UPDATE_NONE;
609
88834998
TS		 610 EVP_MD_CTX_free(s->pha_dgst);
611 s->pha_dgst = NULL;
612
919ba009
VD		 613 /* Reset DANE verification result state */
614 s->dane.mdpth = -1;
615 s->dane.pdpth = -1;
616 X509_free(s->dane.mcert);
617 s->dane.mcert = NULL;
618 s->dane.mtlsa = NULL;
619
620 /* Clear the verification result peername */
621 X509_VERIFY_PARAM_move_peername(s->param, NULL);
622
29948ac8
BK		 623 /* Clear any shared connection state */
624 OPENSSL_free(s->shared_sigalgs);
625 s->shared_sigalgs = NULL;
626 s->shared_sigalgslen = 0;
627
0f113f3e
MC		 628 /*
629 * Check to see if we were changed into a different method, if so, revert
24252537 630 * back.
0f113f3e 631 */
24252537 632 if (s->method != s->ctx->method) {
0f113f3e
MC		 633 s->method->ssl_free(s);
634 s->method = s->ctx->method;
635 if (!s->method->ssl_new(s))
a89325e4 636 return 0;
b77f3ed1
MC		 637 } else {
638 if (!s->method->ssl_clear(s))
639 return 0;
640 }
33d23b87 641
af9752e5 642 RECORD_LAYER_clear(&s->rlayer);
33d23b87 643
a89325e4 644 return 1;
0f113f3e 645}
d02b48c6 646
dd0164e7 647#ifndef OPENSSL_NO_DEPRECATED_3_0
4f43d0e7 648/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 649int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
650{
651 STACK_OF(SSL_CIPHER) *sk;
652
653 ctx->method = meth;
654
5d120511 655 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
6849b73c 656 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
2340ed27
BK		 657 return 0;
658 }
a68eee67 659 sk = ssl_create_cipher_list(ctx,
f865b081
MC		 660 ctx->tls13_ciphersuites,
661 &(ctx->cipher_list),
0f113f3e 662 &(ctx->cipher_list_by_id),
5d120511 663 OSSL_default_cipher_list(), ctx->cert);
0f113f3e 664 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
6849b73c 665 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 666 return 0;
0f113f3e 667 }
208fb891 668 return 1;
0f113f3e 669}
dd0164e7 670#endif
d02b48c6 671
4f43d0e7 672SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 673{
674 SSL *s;
675
676 if (ctx == NULL) {
6849b73c 677 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
26a7d938 678 return NULL;
0f113f3e
MC		 679 }
680 if (ctx->method == NULL) {
6849b73c 681 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 682 return NULL;
0f113f3e
MC		 683 }
684
b51bce94 685 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 686 if (s == NULL)
687 goto err;
0f113f3e 688
e6b10c34 689 s->references = 1;
16203f7b 690 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 691 if (s->lock == NULL) {
692 OPENSSL_free(s);
693 s = NULL;
ae3947de 694 goto err;
e6b10c34 695 }
ae3947de 696
c036e210 697 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 698
0f113f3e 699 s->options = ctx->options;
5ae4ceb9 700 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 701 s->min_proto_version = ctx->min_proto_version;
702 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 703 s->mode = ctx->mode;
704 s->max_cert_list = ctx->max_cert_list;
3fc8d856 705 s->max_early_data = ctx->max_early_data;
4e8548e8 706 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 707 s->num_tickets = ctx->num_tickets;
e97be718 708 s->pha_enabled = ctx->pha_enabled;
0f113f3e 709
f865b081
MC		 710 /* Shallow copy of the ciphersuites stack */
711 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
712 if (s->tls13_ciphersuites == NULL)
713 goto err;
714
2c382349
KR		 715 /*
716 * Earlier library versions used to copy the pointer to the CERT, not
717 * its contents; only when setting new parameters for the per-SSL
718 * copy, ssl_cert_new would be called (and the direct reference to
719 * the per-SSL_CTX settings would be lost, but those still were
720 * indirectly accessed for various purposes, and for that reason they
721 * used to be known as s->ctx->default_cert). Now we don't look at the
722 * SSL_CTX's CERT after having duplicated it once.
723 */
724 s->cert = ssl_cert_dup(ctx->cert);
725 if (s->cert == NULL)
726 goto err;
0f113f3e 727
52e1d7b1 728 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 729 s->msg_callback = ctx->msg_callback;
730 s->msg_callback_arg = ctx->msg_callback_arg;
731 s->verify_mode = ctx->verify_mode;
732 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 733 s->record_padding_cb = ctx->record_padding_cb;
734 s->record_padding_arg = ctx->record_padding_arg;
735 s->block_padding = ctx->block_padding;
0f113f3e 736 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 737 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 738 goto err;
0f113f3e
MC		 739 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
740 s->verify_callback = ctx->default_verify_callback;
741 s->generate_session_id = ctx->generate_session_id;
742
743 s->param = X509_VERIFY_PARAM_new();
a71edf3b 744 if (s->param == NULL)
0f113f3e
MC		 745 goto err;
746 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 747 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 748
749 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 750 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 751 s->split_send_fragment = ctx->split_send_fragment;
752 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 753 if (s->max_pipelines > 1)
754 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 755 if (ctx->default_read_buf_len > 0)
756 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 757
16203f7b 758 SSL_CTX_up_ref(ctx);
0f113f3e 759 s->ctx = ctx;
aff8c126
RS		 760 s->ext.debug_cb = 0;
761 s->ext.debug_arg = NULL;
762 s->ext.ticket_expected = 0;
763 s->ext.status_type = ctx->ext.status_type;
764 s->ext.status_expected = 0;
765 s->ext.ocsp.ids = NULL;
766 s->ext.ocsp.exts = NULL;
767 s->ext.ocsp.resp = NULL;
768 s->ext.ocsp.resp_len = 0;
16203f7b 769 SSL_CTX_up_ref(ctx);
222da979 770 s->session_ctx = ctx;
aff8c126
RS		 771 if (ctx->ext.ecpointformats) {
772 s->ext.ecpointformats =
773 OPENSSL_memdup(ctx->ext.ecpointformats,
774 ctx->ext.ecpointformats_len);
775 if (!s->ext.ecpointformats)
0f113f3e 776 goto err;
aff8c126
RS		 777 s->ext.ecpointformats_len =
778 ctx->ext.ecpointformats_len;
779 }
780 if (ctx->ext.supportedgroups) {
781 s->ext.supportedgroups =
782 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 783 ctx->ext.supportedgroups_len
b92d7b62 784 * sizeof(*ctx->ext.supportedgroups));
aff8c126 785 if (!s->ext.supportedgroups)
0f113f3e 786 goto err;
aff8c126 787 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 788 }
dbc6268f 789
a230b26e 790#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 791 s->ext.npn = NULL;
a230b26e 792#endif
6f017a8f 793
aff8c126
RS		 794 if (s->ctx->ext.alpn) {
795 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
796 if (s->ext.alpn == NULL)
0f113f3e 797 goto err;
aff8c126
RS		 798 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
799 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 800 }
d02b48c6 801
696178ed 802 s->verified_chain = NULL;
0f113f3e 803 s->verify_result = X509_V_OK;
d02b48c6 804
a974e64a
MC		 805 s->default_passwd_callback = ctx->default_passwd_callback;
806 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
807
0f113f3e 808 s->method = ctx->method;
d02b48c6 809
44c04a2e
MC		 810 s->key_update = SSL_KEY_UPDATE_NONE;
811
c9598459
MC		 812 s->allow_early_data_cb = ctx->allow_early_data_cb;
813 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
814
0f113f3e
MC		 815 if (!s->method->ssl_new(s))
816 goto err;
d02b48c6 817
0f113f3e 818 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 819
61986d32 820 if (!SSL_clear(s))
69f68237 821 goto err;
58964a49 822
25a807bc
F		 823 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
824 goto err;
58964a49 825
ddac1974 826#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 827 s->psk_client_callback = ctx->psk_client_callback;
828 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 829#endif
f46184bd
MC		 830 s->psk_find_session_cb = ctx->psk_find_session_cb;
831 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 832
9f5a87fd
PY		 833 s->async_cb = ctx->async_cb;
834 s->async_cb_arg = ctx->async_cb_arg;
835
07bbc92c
MC		 836 s->job = NULL;
837
ed29e82a
RP		 838#ifndef OPENSSL_NO_CT
839 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 840 ctx->ct_validation_callback_arg))
ed29e82a
RP		 841 goto err;
842#endif
843
16203f7b 844 return s;
0f113f3e 845 err:
62adbcee 846 SSL_free(s);
6849b73c 847 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
16203f7b 848 return NULL;
0f113f3e 849}
d02b48c6 850
e417070c
RS		 851int SSL_is_dtls(const SSL *s)
852{
853 return SSL_IS_DTLS(s) ? 1 : 0;
854}
855
c5ebfcab 856int SSL_up_ref(SSL *s)
a18a31e4 857{
16203f7b 858 int i;
c5ebfcab 859
2f545ae4 860 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 861 return 0;
862
863 REF_PRINT_COUNT("SSL", s);
864 REF_ASSERT_ISNT(i < 2);
865 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 866}
867
0f113f3e
MC		 868int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
869 unsigned int sid_ctx_len)
870{
fe9edc9d 871 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 872 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 873 return 0;
874 }
875 ctx->sid_ctx_length = sid_ctx_len;
876 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 877
878 return 1;
0f113f3e 879}
4eb77b26 880
0f113f3e
MC		 881int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
882 unsigned int sid_ctx_len)
883{
884 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 885 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 886 return 0;
887 }
888 ssl->sid_ctx_length = sid_ctx_len;
889 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 890
891 return 1;
0f113f3e 892}
b4cadc6e 893
dc644fe2 894int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 895{
16203f7b 896 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 897 ctx->generate_session_id = cb;
16203f7b 898 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 899 return 1;
900}
dc644fe2
GT		 901
902int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 903{
16203f7b 904 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 905 ssl->generate_session_id = cb;
16203f7b 906 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 907 return 1;
908}
dc644fe2 909
f85c9904 910int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 911 unsigned int id_len)
912{
913 /*
914 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 915 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 916 * find if there's a session in the hash table that would conflict with
917 * any new session built out of this id/id_len and the ssl_version in use
918 * by this SSL.
919 */
920 SSL_SESSION r, *p;
921
cbe29648 922 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 923 return 0;
924
925 r.ssl_version = ssl->version;
926 r.session_id_length = id_len;
927 memcpy(r.session_id, id, id_len);
928
e2bb9b9b
TS		 929 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
930 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
931 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 932 return (p != NULL);
933}
dc644fe2 934
bb7cd4e3 935int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 936{
937 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
938}
bb7cd4e3
DSH		 939
940int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 941{
942 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
943}
926a56bf 944
bb7cd4e3 945int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 946{
947 return X509_VERIFY_PARAM_set_trust(s->param, trust);
948}
bb7cd4e3
DSH		 949
950int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 951{
952 return X509_VERIFY_PARAM_set_trust(s->param, trust);
953}
bb7cd4e3 954
919ba009
VD		 955int SSL_set1_host(SSL *s, const char *hostname)
956{
c832840e
DW		 957 /* If a hostname is provided and parses as an IP address,
958 * treat it as such. */
959 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
960 return 1;
961
919ba009
VD		 962 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
963}
964
965int SSL_add1_host(SSL *s, const char *hostname)
966{
c832840e
DW		 967 /* If a hostname is provided and parses as an IP address,
968 * treat it as such. */
892a9e4c
DW		 969 if (hostname)
970 {
971 ASN1_OCTET_STRING *ip;
972 char *old_ip;
973
974 ip = a2i_IPADDRESS(hostname);
975 if (ip) {
976 /* We didn't want it; only to check if it *is* an IP address */
977 ASN1_OCTET_STRING_free(ip);
978
979 old_ip = X509_VERIFY_PARAM_get1_ip_asc(s->param);
980 if (old_ip)
981 {
f2bfc53b 982 OPENSSL_free(old_ip);
892a9e4c
DW		 983 /* There can be only one IP address */
984 return 0;
985 }
986
987 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
988 }
989 }
c832840e 990
919ba009
VD		 991 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
992}
993
994void SSL_set_hostflags(SSL *s, unsigned int flags)
995{
996 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
997}
998
4588cb44 999const char *SSL_get0_peername(SSL *s)
919ba009
VD		 1000{
1001 return X509_VERIFY_PARAM_get0_peername(s->param);
1002}
1003
1004int SSL_CTX_dane_enable(SSL_CTX *ctx)
1005{
1006 return dane_ctx_enable(&ctx->dane);
1007}
1008
5ae4ceb9
VD		 1009unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1010{
1011 unsigned long orig = ctx->dane.flags;
1012
1013 ctx->dane.flags |= flags;
1014 return orig;
1015}
1016
1017unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1018{
1019 unsigned long orig = ctx->dane.flags;
1020
1021 ctx->dane.flags &= ~flags;
1022 return orig;
1023}
1024
919ba009
VD		 1025int SSL_dane_enable(SSL *s, const char *basedomain)
1026{
b9aec69a 1027 SSL_DANE *dane = &s->dane;
919ba009
VD		 1028
1029 if (s->ctx->dane.mdmax == 0) {
6849b73c 1030 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
919ba009
VD		 1031 return 0;
1032 }
1033 if (dane->trecs != NULL) {
6849b73c 1034 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
919ba009
VD		 1035 return 0;
1036 }
1037
8d887efa
VD		 1038 /*
1039 * Default SNI name. This rejects empty names, while set1_host below
1040 * accepts them and disables host name checks. To avoid side-effects with
1041 * invalid input, set the SNI name first.
1042 */
aff8c126 1043 if (s->ext.hostname == NULL) {
dccd20d1 1044 if (!SSL_set_tlsext_host_name(s, basedomain)) {
6849b73c 1045 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1046 return -1;
8d887efa
VD		 1047 }
1048 }
1049
919ba009
VD		 1050 /* Primary RFC6125 reference identifier */
1051 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
6849b73c 1052 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
919ba009
VD		 1053 return -1;
1054 }
1055
919ba009
VD		 1056 dane->mdpth = -1;
1057 dane->pdpth = -1;
1058 dane->dctx = &s->ctx->dane;
1059 dane->trecs = sk_danetls_record_new_null();
1060
1061 if (dane->trecs == NULL) {
6849b73c 1062 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 1063 return -1;
1064 }
1065 return 1;
1066}
1067
5ae4ceb9
VD		 1068unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1069{
1070 unsigned long orig = ssl->dane.flags;
1071
1072 ssl->dane.flags |= flags;
1073 return orig;
1074}
1075
1076unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1077{
1078 unsigned long orig = ssl->dane.flags;
1079
1080 ssl->dane.flags &= ~flags;
1081 return orig;
1082}
1083
919ba009
VD		 1084int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1085{
b9aec69a 1086 SSL_DANE *dane = &s->dane;
919ba009 1087
c0a445a9 1088 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1089 return -1;
1090 if (dane->mtlsa) {
1091 if (mcert)
1092 *mcert = dane->mcert;
1093 if (mspki)
1094 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1095 }
1096 return dane->mdpth;
1097}
1098
1099int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
6d4313f0 1100 uint8_t *mtype, const unsigned char **data, size_t *dlen)
919ba009 1101{
b9aec69a 1102 SSL_DANE *dane = &s->dane;
919ba009 1103
c0a445a9 1104 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1105 return -1;
1106 if (dane->mtlsa) {
1107 if (usage)
1108 *usage = dane->mtlsa->usage;
1109 if (selector)
1110 *selector = dane->mtlsa->selector;
1111 if (mtype)
1112 *mtype = dane->mtlsa->mtype;
1113 if (data)
1114 *data = dane->mtlsa->data;
1115 if (dlen)
1116 *dlen = dane->mtlsa->dlen;
1117 }
1118 return dane->mdpth;
1119}
1120
b9aec69a 1121SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1122{
1123 return &s->dane;
1124}
1125
1126int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
6d4313f0 1127 uint8_t mtype, const unsigned char *data, size_t dlen)
919ba009
VD		 1128{
1129 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1130}
1131
a230b26e
EK		 1132int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1133 uint8_t ord)
919ba009
VD		 1134{
1135 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1136}
1137
ccf11751 1138int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1139{
1140 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1141}
ccf11751
DSH		 1142
1143int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1144{
1145 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1146}
ccf11751 1147
7af31968 1148X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1149{
1150 return ctx->param;
1151}
7af31968
DSH		 1152
1153X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1154{
1155 return ssl->param;
1156}
7af31968 1157
a5ee80b9 1158void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1159{
1160 ssl_cert_clear_certs(s->cert);
1161}
a5ee80b9 1162
4f43d0e7 1163void SSL_free(SSL *s)
0f113f3e
MC		 1164{
1165 int i;
58964a49 1166
e6e9170d
RS		 1167 if (s == NULL)
1168 return;
2f545ae4 1169 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1170 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1171 if (i > 0)
1172 return;
f3f1cf84 1173 REF_ASSERT_ISNT(i < 0);
d02b48c6 1174
222561fe 1175 X509_VERIFY_PARAM_free(s->param);
919ba009 1176 dane_final(&s->dane);
0f113f3e
MC		 1177 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1178
50ec7505
BP		 1179 RECORD_LAYER_release(&s->rlayer);
1180
b77f3ed1 1181 /* Ignore return value */
2e7dc7cd
MC		 1182 ssl_free_wbio_buffer(s);
1183
65e2d672 1184 BIO_free_all(s->wbio);
50ec7505 1185 s->wbio = NULL;
325cfa85 1186 BIO_free_all(s->rbio);
50ec7505 1187 s->rbio = NULL;
0f113f3e 1188
25aaa98a 1189 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1190
1191 /* add extra stuff */
25aaa98a
RS		 1192 sk_SSL_CIPHER_free(s->cipher_list);
1193 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1194 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
eee2a6a7 1195 sk_SSL_CIPHER_free(s->peer_ciphers);
0f113f3e
MC		 1196
1197 /* Make the next call work :-) */
1198 if (s->session != NULL) {
1199 ssl_clear_bad_session(s);
1200 SSL_SESSION_free(s->session);
1201 }
9368f865 1202 SSL_SESSION_free(s->psksession);
add8d0e9 1203 OPENSSL_free(s->psksession_id);
0f113f3e 1204
d31fb0b5 1205 clear_ciphers(s);
d02b48c6 1206
e0e920b1 1207 ssl_cert_free(s->cert);
29948ac8 1208 OPENSSL_free(s->shared_sigalgs);
0f113f3e 1209 /* Free up if allocated */
d02b48c6 1210
aff8c126 1211 OPENSSL_free(s->ext.hostname);
222da979 1212 SSL_CTX_free(s->session_ctx);
aff8c126 1213 OPENSSL_free(s->ext.ecpointformats);
cd0fb43c 1214 OPENSSL_free(s->ext.peer_ecpointformats);
aff8c126 1215 OPENSSL_free(s->ext.supportedgroups);
45436e61 1216 OPENSSL_free(s->ext.peer_supportedgroups);
aff8c126 1217 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1218#ifndef OPENSSL_NO_OCSP
aff8c126 1219 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1220#endif
ed29e82a
RP		 1221#ifndef OPENSSL_NO_CT
1222 SCT_LIST_free(s->scts);
aff8c126 1223 OPENSSL_free(s->ext.scts);
ed29e82a 1224#endif
aff8c126
RS		 1225 OPENSSL_free(s->ext.ocsp.resp);
1226 OPENSSL_free(s->ext.alpn);
cfef5027 1227 OPENSSL_free(s->ext.tls13_cookie);
94941cad
MK		 1228 if (s->clienthello != NULL)
1229 OPENSSL_free(s->clienthello->pre_proc_exts);
6b1bb98f 1230 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1231 OPENSSL_free(s->pha_context);
1232 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1233
fa7c2637 1234 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1235 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1236
696178ed
DSH		 1237 sk_X509_pop_free(s->verified_chain, X509_free);
1238
0f113f3e
MC		 1239 if (s->method != NULL)
1240 s->method->ssl_free(s);
1241
e0e920b1 1242 SSL_CTX_free(s->ctx);
7c3908dd 1243
ff75a257
MC		 1244 ASYNC_WAIT_CTX_free(s->waitctx);
1245
e481f9b9 1246#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1247 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1248#endif
1249
e783bae2 1250#ifndef OPENSSL_NO_SRTP
25aaa98a 1251 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1252#endif
1253
16203f7b
AG		 1254 CRYPTO_THREAD_lock_free(s->lock);
1255
0f113f3e
MC		 1256 OPENSSL_free(s);
1257}
1258
65e2d672 1259void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1260{
65e2d672 1261 BIO_free_all(s->rbio);
3ffbe008
MC		 1262 s->rbio = rbio;
1263}
1264
65e2d672 1265void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1266{
1267 /*
1268 * If the output buffering BIO is still in place, remove it
1269 */
2e7dc7cd
MC		 1270 if (s->bbio != NULL)
1271 s->wbio = BIO_pop(s->wbio);
1272
65e2d672 1273 BIO_free_all(s->wbio);
0f113f3e 1274 s->wbio = wbio;
2e7dc7cd
MC		 1275
1276 /* Re-attach |bbio| to the new |wbio|. */
1277 if (s->bbio != NULL)
1278 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1279}
d02b48c6 1280
3ffbe008
MC		 1281void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1282{
65e2d672
MC		 1283 /*
1284 * For historical reasons, this function has many different cases in
1285 * ownership handling.
1286 */
1287
1288 /* If nothing has changed, do nothing */
1289 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1290 return;
1291
1292 /*
1293 * If the two arguments are equal then one fewer reference is granted by the
1294 * caller than we want to take
1295 */
1296 if (rbio != NULL && rbio == wbio)
1297 BIO_up_ref(rbio);
1298
1299 /*
1300 * If only the wbio is changed only adopt one reference.
1301 */
1302 if (rbio == SSL_get_rbio(s)) {
1303 SSL_set0_wbio(s, wbio);
1304 return;
1305 }
1306 /*
1307 * There is an asymmetry here for historical reasons. If only the rbio is
1308 * changed AND the rbio and wbio were originally different, then we only
1309 * adopt one reference.
1310 */
1311 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1312 SSL_set0_rbio(s, rbio);
1313 return;
1314 }
1315
1316 /* Otherwise, adopt both references. */
1317 SSL_set0_rbio(s, rbio);
1318 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1319}
1320
0821bcd4 1321BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1322{
2e7dc7cd 1323 return s->rbio;
0f113f3e 1324}
d02b48c6 1325
0821bcd4 1326BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1327{
2e7dc7cd
MC		 1328 if (s->bbio != NULL) {
1329 /*
1330 * If |bbio| is active, the true caller-configured BIO is its
1331 * |next_bio|.
1332 */
1333 return BIO_next(s->bbio);
1334 }
1335 return s->wbio;
0f113f3e 1336}
d02b48c6 1337
0821bcd4 1338int SSL_get_fd(const SSL *s)
0f113f3e 1339{
2e7dc7cd 1340 return SSL_get_rfd(s);
0f113f3e 1341}
24cbf3ef 1342
0821bcd4 1343int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1344{
1345 int ret = -1;
1346 BIO *b, *r;
1347
1348 b = SSL_get_rbio(s);
1349 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1350 if (r != NULL)
1351 BIO_get_fd(r, &ret);
26a7d938 1352 return ret;
0f113f3e 1353}
d02b48c6 1354
0821bcd4 1355int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1356{
1357 int ret = -1;
1358 BIO *b, *r;
1359
1360 b = SSL_get_wbio(s);
1361 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1362 if (r != NULL)
1363 BIO_get_fd(r, &ret);
26a7d938 1364 return ret;
0f113f3e 1365}
24cbf3ef 1366
bc36ee62 1367#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1368int SSL_set_fd(SSL *s, int fd)
1369{
1370 int ret = 0;
1371 BIO *bio = NULL;
1372
1373 bio = BIO_new(BIO_s_socket());
1374
1375 if (bio == NULL) {
6849b73c 1376 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
0f113f3e
MC		 1377 goto err;
1378 }
1379 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1380 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1381#ifndef OPENSSL_NO_KTLS
1382 /*
1383 * The new socket is created successfully regardless of ktls_enable.
1384 * ktls_enable doesn't change any functionality of the socket, except
1385 * changing the setsockopt to enable the processing of ktls_start.
1386 * Thus, it is not a problem to call it for non-TLS sockets.
1387 */
1388 ktls_enable(fd);
1389#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1390 ret = 1;
1391 err:
26a7d938 1392 return ret;
0f113f3e 1393}
d02b48c6 1394
0f113f3e
MC		 1395int SSL_set_wfd(SSL *s, int fd)
1396{
2e7dc7cd 1397 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1398
2e7dc7cd
MC		 1399 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1400 || (int)BIO_get_fd(rbio, NULL) != fd) {
1401 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1402
1403 if (bio == NULL) {
6849b73c 1404 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1405 return 0;
0f113f3e
MC		 1406 }
1407 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1408 SSL_set0_wbio(s, bio);
50ec7505
BP		 1409#ifndef OPENSSL_NO_KTLS
1410 /*
1411 * The new socket is created successfully regardless of ktls_enable.
1412 * ktls_enable doesn't change any functionality of the socket, except
1413 * changing the setsockopt to enable the processing of ktls_start.
1414 * Thus, it is not a problem to call it for non-TLS sockets.
1415 */
1416 ktls_enable(fd);
1417#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1418 } else {
65e2d672
MC		 1419 BIO_up_ref(rbio);
1420 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1421 }
1422 return 1;
0f113f3e
MC		 1423}
1424
1425int SSL_set_rfd(SSL *s, int fd)
1426{
2e7dc7cd 1427 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1428
2e7dc7cd
MC		 1429 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1430 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1431 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1432
1433 if (bio == NULL) {
6849b73c 1434 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1435 return 0;
0f113f3e
MC		 1436 }
1437 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1438 SSL_set0_rbio(s, bio);
2e7dc7cd 1439 } else {
65e2d672
MC		 1440 BIO_up_ref(wbio);
1441 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1442 }
1443
1444 return 1;
0f113f3e
MC		 1445}
1446#endif
ca03109c
BM		 1447
1448/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1449size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1450{
1451 size_t ret = 0;
1452
555cbb32
TS		 1453 ret = s->s3.tmp.finish_md_len;
1454 if (count > ret)
1455 count = ret;
1456 memcpy(buf, s->s3.tmp.finish_md, count);
0f113f3e
MC		 1457 return ret;
1458}
ca03109c
BM		 1459
1460/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1461size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1462{
1463 size_t ret = 0;
ca03109c 1464
555cbb32
TS		 1465 ret = s->s3.tmp.peer_finish_md_len;
1466 if (count > ret)
1467 count = ret;
1468 memcpy(buf, s->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1469 return ret;
1470}
ca03109c 1471
0821bcd4 1472int SSL_get_verify_mode(const SSL *s)
0f113f3e 1473{
26a7d938 1474 return s->verify_mode;
0f113f3e 1475}
d02b48c6 1476
0821bcd4 1477int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1478{
1479 return X509_VERIFY_PARAM_get_depth(s->param);
1480}
7f89714e 1481
0f113f3e 1482int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1483 return s->verify_callback;
0f113f3e 1484}
d02b48c6 1485
0821bcd4 1486int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1487{
26a7d938 1488 return ctx->verify_mode;
0f113f3e 1489}
d02b48c6 1490
0821bcd4 1491int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1492{
1493 return X509_VERIFY_PARAM_get_depth(ctx->param);
1494}
1495
1496int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1497 return ctx->default_verify_callback;
0f113f3e
MC		 1498}
1499
1500void SSL_set_verify(SSL *s, int mode,
1501 int (*callback) (int ok, X509_STORE_CTX *ctx))
1502{
1503 s->verify_mode = mode;
1504 if (callback != NULL)
1505 s->verify_callback = callback;
1506}
1507
1508void SSL_set_verify_depth(SSL *s, int depth)
1509{
1510 X509_VERIFY_PARAM_set_depth(s->param, depth);
1511}
1512
1513void SSL_set_read_ahead(SSL *s, int yes)
1514{
52e1d7b1 1515 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1516}
d02b48c6 1517
0821bcd4 1518int SSL_get_read_ahead(const SSL *s)
0f113f3e 1519{
52e1d7b1 1520 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1521}
d02b48c6 1522
0821bcd4 1523int SSL_pending(const SSL *s)
0f113f3e 1524{
8b0e934a
MC		 1525 size_t pending = s->method->ssl_pending(s);
1526
0f113f3e
MC		 1527 /*
1528 * SSL_pending cannot work properly if read-ahead is enabled
1529 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1530 * impossible to fix since SSL_pending cannot report errors that may be
1531 * observed while scanning the new data. (Note that SSL_pending() is
1532 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1533 *
1534 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1535 * we just return INT_MAX.
0f113f3e 1536 */
348240c6 1537 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1538}
d02b48c6 1539
49580f25
MC		 1540int SSL_has_pending(const SSL *s)
1541{
1542 /*
1543 * Similar to SSL_pending() but returns a 1 to indicate that we have
1544 * unprocessed data available or 0 otherwise (as opposed to the number of
1545 * bytes available). Unlike SSL_pending() this will take into account
1546 * read_ahead data. A 1 return simply indicates that we have unprocessed
1547 * data. That data may not result in any application data, or we may fail
1548 * to parse the records for some reason.
1549 */
b8c49611 1550 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1551 return 1;
1552
1553 return RECORD_LAYER_read_pending(&s->rlayer);
1554}
1555
8c2bfd25 1556X509 *SSL_get1_peer_certificate(const SSL *s)
0f113f3e 1557{
8c2bfd25 1558 X509 *r = SSL_get0_peer_certificate(s);
d02b48c6 1559
8c2bfd25
TS		 1560 if (r != NULL)
1561 X509_up_ref(r);
0f113f3e 1562
26a7d938 1563 return r;
0f113f3e 1564}
d02b48c6 1565
8c2bfd25
TS		 1566X509 *SSL_get0_peer_certificate(const SSL *s)
1567{
1568 if ((s == NULL) || (s->session == NULL))
1569 return NULL;
1570 else
1571 return s->session->peer;
1572}
1573
0821bcd4 1574STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1575{
1576 STACK_OF(X509) *r;
1577
c34b0f99 1578 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1579 r = NULL;
1580 else
c34b0f99 1581 r = s->session->peer_chain;
0f113f3e
MC		 1582
1583 /*
1584 * If we are a client, cert_chain includes the peer's own certificate; if
1585 * we are a server, it does not.
1586 */
1587
26a7d938 1588 return r;
0f113f3e
MC		 1589}
1590
1591/*
1592 * Now in theory, since the calling process own 't' it should be safe to
1593 * modify. We need to be able to read f without being hassled
1594 */
17dd65e6 1595int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1596{
16203f7b 1597 int i;
0f113f3e 1598 /* Do we need to to SSL locking? */
61986d32 1599 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1600 return 0;
69f68237 1601 }
0f113f3e
MC		 1602
1603 /*
87d9cafa 1604 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1605 */
1606 if (t->method != f->method) {
919ba009
VD		 1607 t->method->ssl_free(t);
1608 t->method = f->method;
1609 if (t->method->ssl_new(t) == 0)
1610 return 0;
0f113f3e
MC		 1611 }
1612
2f545ae4 1613 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1614 ssl_cert_free(t->cert);
1615 t->cert = f->cert;
348240c6 1616 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1617 return 0;
69f68237 1618 }
17dd65e6
MC		 1619
1620 return 1;
0f113f3e 1621}
d02b48c6 1622
58964a49 1623/* Fix this so it checks all the valid key/cert options */
0821bcd4 1624int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1625{
a230b26e 1626 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
6849b73c 1627 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1628 return 0;
0f113f3e
MC		 1629 }
1630 if (ctx->cert->key->privatekey == NULL) {
6849b73c 1631 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1632 return 0;
0f113f3e 1633 }
26a7d938
K		 1634 return X509_check_private_key
1635 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1636}
d02b48c6 1637
58964a49 1638/* Fix this function so that it takes an optional type parameter */
0821bcd4 1639int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1640{
1641 if (ssl == NULL) {
6849b73c 1642 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1643 return 0;
0f113f3e 1644 }
0f113f3e 1645 if (ssl->cert->key->x509 == NULL) {
6849b73c 1646 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1647 return 0;
0f113f3e
MC		 1648 }
1649 if (ssl->cert->key->privatekey == NULL) {
6849b73c 1650 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1651 return 0;
0f113f3e 1652 }
26a7d938
K		 1653 return X509_check_private_key(ssl->cert->key->x509,
1654 ssl->cert->key->privatekey);
0f113f3e 1655}
d02b48c6 1656
07bbc92c
MC		 1657int SSL_waiting_for_async(SSL *s)
1658{
e8aa8b6c 1659 if (s->job)
82676094
MC		 1660 return 1;
1661
07bbc92c
MC		 1662 return 0;
1663}
1664
ff75a257 1665int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1666{
ff75a257
MC		 1667 ASYNC_WAIT_CTX *ctx = s->waitctx;
1668
1669 if (ctx == NULL)
1670 return 0;
1671 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1672}
f4da39d2 1673
ff75a257
MC		 1674int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1675 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1676{
1677 ASYNC_WAIT_CTX *ctx = s->waitctx;
1678
1679 if (ctx == NULL)
1680 return 0;
1681 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1682 numdelfds);
f4da39d2
MC		 1683}
1684
9f5a87fd
PY		 1685int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1686{
1687 ctx->async_cb = callback;
1688 return 1;
1689}
1690
1691int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1692{
1693 ctx->async_cb_arg = arg;
1694 return 1;
1695}
1696
1697int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1698{
1699 s->async_cb = callback;
1700 return 1;
1701}
1702
1703int SSL_set_async_callback_arg(SSL *s, void *arg)
1704{
1705 s->async_cb_arg = arg;
1706 return 1;
1707}
1708
1709int SSL_get_async_status(SSL *s, int *status)
1710{
1711 ASYNC_WAIT_CTX *ctx = s->waitctx;
1712
1713 if (ctx == NULL)
1714 return 0;
1715 *status = ASYNC_WAIT_CTX_get_status(ctx);
1716 return 1;
1717}
1718
4f43d0e7 1719int SSL_accept(SSL *s)
0f113f3e 1720{
c4c32155 1721 if (s->handshake_func == NULL) {
0f113f3e
MC		 1722 /* Not properly initialized yet */
1723 SSL_set_accept_state(s);
07bbc92c 1724 }
add2f5ca
MC		 1725
1726 return SSL_do_handshake(s);
0f113f3e 1727}
d02b48c6 1728
4f43d0e7 1729int SSL_connect(SSL *s)
0f113f3e 1730{
c4c32155 1731 if (s->handshake_func == NULL) {
0f113f3e
MC		 1732 /* Not properly initialized yet */
1733 SSL_set_connect_state(s);
add2f5ca 1734 }
b31b04d9 1735
add2f5ca 1736 return SSL_do_handshake(s);
0f113f3e 1737}
d02b48c6 1738
0821bcd4 1739long SSL_get_default_timeout(const SSL *s)
0f113f3e 1740{
26a7d938 1741 return s->method->get_timeout();
0f113f3e
MC		 1742}
1743
9f5a87fd
PY		 1744static int ssl_async_wait_ctx_cb(void *arg)
1745{
1746 SSL *s = (SSL *)arg;
1747
1748 return s->async_cb(s, s->async_cb_arg);
1749}
1750
7fecbf6f 1751static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1752 int (*func) (void *))
1753{
add2f5ca 1754 int ret;
ff75a257
MC		 1755 if (s->waitctx == NULL) {
1756 s->waitctx = ASYNC_WAIT_CTX_new();
1757 if (s->waitctx == NULL)
1758 return -1;
9f5a87fd
PY		 1759 if (s->async_cb != NULL
1760 && !ASYNC_WAIT_CTX_set_callback
1761 (s->waitctx, ssl_async_wait_ctx_cb, s))
1762 return -1;
ff75a257 1763 }
e8aa8b6c 1764 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1765 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1766 case ASYNC_ERR:
1767 s->rwstate = SSL_NOTHING;
6849b73c 1768 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1769 return -1;
1770 case ASYNC_PAUSE:
1771 s->rwstate = SSL_ASYNC_PAUSED;
1772 return -1;
fc7f190c
MC		 1773 case ASYNC_NO_JOBS:
1774 s->rwstate = SSL_ASYNC_NO_JOBS;
1775 return -1;
add2f5ca
MC		 1776 case ASYNC_FINISH:
1777 s->job = NULL;
1778 return ret;
1779 default:
1780 s->rwstate = SSL_NOTHING;
6849b73c 1781 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1782 /* Shouldn't happen */
1783 return -1;
1784 }
1785}
07bbc92c 1786
add2f5ca 1787static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1788{
1789 struct ssl_async_args *args;
1790 SSL *s;
1791 void *buf;
348240c6 1792 size_t num;
07bbc92c
MC		 1793
1794 args = (struct ssl_async_args *)vargs;
1795 s = args->s;
1796 buf = args->buf;
1797 num = args->num;
ec447924
MC		 1798 switch (args->type) {
1799 case READFUNC:
7ee8627f 1800 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1801 case WRITEFUNC:
7ee8627f 1802 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1803 case OTHERFUNC:
1804 return args->f.func_other(s);
1805 }
1806 return -1;
07bbc92c
MC		 1807}
1808
4ee7d3f9 1809int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1810{
c4c32155 1811 if (s->handshake_func == NULL) {
6849b73c 1812 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1813 return -1;
1814 }
1815
1816 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1817 s->rwstate = SSL_NOTHING;
4ee7d3f9 1818 return 0;
0f113f3e 1819 }
07bbc92c 1820
564547e4
MC		 1821 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1822 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
6849b73c 1823 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
0a5ece5b
MC		 1824 return 0;
1825 }
564547e4
MC		 1826 /*
1827 * If we are a client and haven't received the ServerHello etc then we
1828 * better do that
1829 */
1830 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1831
e8aa8b6c 1832 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1833 struct ssl_async_args args;
eda75751 1834 int ret;
add2f5ca
MC		 1835
1836 args.s = s;
1837 args.buf = buf;
1838 args.num = num;
ec447924
MC		 1839 args.type = READFUNC;
1840 args.f.func_read = s->method->ssl_read;
add2f5ca 1841
eda75751 1842 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1843 *readbytes = s->asyncrw;
eda75751 1844 return ret;
07bbc92c 1845 } else {
54105ddd 1846 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1847 }
0f113f3e
MC		 1848}
1849
4ee7d3f9 1850int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1851{
1852 int ret;
54105ddd 1853 size_t readbytes;
eda75751
MC		 1854
1855 if (num < 0) {
6849b73c 1856 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
eda75751
MC		 1857 return -1;
1858 }
1859
4ee7d3f9 1860 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1861
1862 /*
1863 * The cast is safe here because ret should be <= INT_MAX because num is
1864 * <= INT_MAX
1865 */
1866 if (ret > 0)
54105ddd 1867 ret = (int)readbytes;
eda75751
MC		 1868
1869 return ret;
1870}
1871
4ee7d3f9
KR		 1872int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1873{
1874 int ret = ssl_read_internal(s, buf, num, readbytes);
1875
1876 if (ret < 0)
1877 ret = 0;
1878 return ret;
1879}
1880
f533fbd4 1881int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1882{
1883 int ret;
1884
1885 if (!s->server) {
6849b73c 1886 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 1887 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1888 }
1889
d781d247
MC		 1890 switch (s->early_data_state) {
1891 case SSL_EARLY_DATA_NONE:
1892 if (!SSL_in_before(s)) {
6849b73c 1893 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 1894 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1895 }
1896 /* fall through */
1897
1898 case SSL_EARLY_DATA_ACCEPT_RETRY:
1899 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1900 ret = SSL_accept(s);
1901 if (ret <= 0) {
1902 /* NBIO or error */
1903 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1904 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1905 }
1906 /* fall through */
1907
1908 case SSL_EARLY_DATA_READ_RETRY:
1909 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1910 s->early_data_state = SSL_EARLY_DATA_READING;
1911 ret = SSL_read_ex(s, buf, num, readbytes);
1912 /*
ef6c191b
MC		 1913 * State machine will update early_data_state to
1914 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1915 * message
d781d247
MC		 1916 */
1917 if (ret > 0 || (ret <= 0 && s->early_data_state
1918 != SSL_EARLY_DATA_FINISHED_READING)) {
1919 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1920 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1921 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1922 }
1923 } else {
1924 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1925 }
1926 *readbytes = 0;
f533fbd4 1927 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1928
1929 default:
6849b73c 1930 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 1931 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1932 }
1933}
1934
f5b519c4 1935int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1936{
1937 return s->ext.early_data;
1938}
1939
4ee7d3f9 1940static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1941{
c4c32155 1942 if (s->handshake_func == NULL) {
6849b73c 1943 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1944 return -1;
1945 }
1946
1947 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1948 return 0;
0f113f3e 1949 }
e8aa8b6c 1950 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1951 struct ssl_async_args args;
eda75751 1952 int ret;
0f113f3e 1953
add2f5ca
MC		 1954 args.s = s;
1955 args.buf = buf;
1956 args.num = num;
ec447924
MC		 1957 args.type = READFUNC;
1958 args.f.func_read = s->method->ssl_peek;
07bbc92c 1959
eda75751 1960 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1961 *readbytes = s->asyncrw;
eda75751 1962 return ret;
add2f5ca 1963 } else {
54105ddd 1964 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1965 }
07bbc92c
MC		 1966}
1967
4ee7d3f9 1968int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1969{
1970 int ret;
4ee7d3f9 1971 size_t readbytes;
7ee8627f
MC		 1972
1973 if (num < 0) {
6849b73c 1974 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1975 return -1;
1976 }
1977
4ee7d3f9 1978 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1979
1980 /*
1981 * The cast is safe here because ret should be <= INT_MAX because num is
1982 * <= INT_MAX
1983 */
1984 if (ret > 0)
4ee7d3f9 1985 ret = (int)readbytes;
7ee8627f
MC		 1986
1987 return ret;
1988}
1989
4ee7d3f9
KR		 1990
1991int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1992{
1993 int ret = ssl_peek_internal(s, buf, num, readbytes);
1994
1995 if (ret < 0)
1996 ret = 0;
1997 return ret;
1998}
1999
2000int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 2001{
c4c32155 2002 if (s->handshake_func == NULL) {
6849b73c 2003 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2004 return -1;
2005 }
2006
2007 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2008 s->rwstate = SSL_NOTHING;
6849b73c 2009 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
4ee7d3f9 2010 return -1;
0f113f3e 2011 }
07bbc92c 2012
ef6c191b 2013 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 2014 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2015 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
6849b73c 2016 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 2017 return 0;
0a5ece5b 2018 }
564547e4
MC		 2019 /* If we are a client and haven't sent the Finished we better do that */
2020 ossl_statem_check_finish_init(s, 1);
49e7fe12 2021
e8aa8b6c 2022 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 2023 int ret;
add2f5ca
MC		 2024 struct ssl_async_args args;
2025
2026 args.s = s;
2027 args.buf = (void *)buf;
2028 args.num = num;
ec447924
MC		 2029 args.type = WRITEFUNC;
2030 args.f.func_write = s->method->ssl_write;
add2f5ca 2031
7ee8627f
MC		 2032 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2033 *written = s->asyncrw;
2034 return ret;
07bbc92c 2035 } else {
7ee8627f 2036 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2037 }
0f113f3e 2038}
d02b48c6 2039
7c3a7561
BP		 2040ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2041{
2042 ossl_ssize_t ret;
2043
2044 if (s->handshake_func == NULL) {
6849b73c 2045 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2046 return -1;
2047 }
2048
2049 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2050 s->rwstate = SSL_NOTHING;
6849b73c 2051 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
7c3a7561
BP		 2052 return -1;
2053 }
2054
2055 if (!BIO_get_ktls_send(s->wbio)) {
6849b73c 2056 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2057 return -1;
2058 }
2059
2060 /* If we have an alert to send, lets send it */
2061 if (s->s3.alert_dispatch) {
2062 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2063 if (ret <= 0) {
2064 /* SSLfatal() already called if appropriate */
2065 return ret;
2066 }
2067 /* if it went, fall through and send more stuff */
2068 }
2069
2070 s->rwstate = SSL_WRITING;
2071 if (BIO_flush(s->wbio) <= 0) {
2072 if (!BIO_should_retry(s->wbio)) {
2073 s->rwstate = SSL_NOTHING;
2074 } else {
2075#ifdef EAGAIN
2076 set_sys_error(EAGAIN);
2077#endif
2078 }
2079 return -1;
2080 }
2081
712c0942 2082#ifdef OPENSSL_NO_KTLS
fa7a8074
RL		 2083 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2084 "can't call ktls_sendfile(), ktls disabled");
712c0942 2085 return -1;
7c3a7561 2086#else
712c0942 2087 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
7c3a7561
BP		 2088 if (ret < 0) {
2089#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2090 if ((get_last_sys_error() == EAGAIN) ||
2091 (get_last_sys_error() == EINTR) ||
2092 (get_last_sys_error() == EBUSY))
2093 BIO_set_retry_write(s->wbio);
2094 else
2095#endif
6849b73c 2096 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2097 return ret;
2098 }
2099 s->rwstate = SSL_NOTHING;
2100 return ret;
712c0942 2101#endif
7c3a7561
BP		 2102}
2103
4ee7d3f9
KR		 2104int SSL_write(SSL *s, const void *buf, int num)
2105{
2106 int ret;
2107 size_t written;
2108
2109 if (num < 0) {
6849b73c 2110 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
4ee7d3f9
KR		 2111 return -1;
2112 }
2113
2114 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2115
2116 /*
2117 * The cast is safe here because ret should be <= INT_MAX because num is
2118 * <= INT_MAX
2119 */
2120 if (ret > 0)
2121 ret = (int)written;
2122
2123 return ret;
2124}
2125
2126int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2127{
2128 int ret = ssl_write_internal(s, buf, num, written);
2129
2130 if (ret < 0)
2131 ret = 0;
2132 return ret;
2133}
2134
0665b4ed 2135int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2136{
a0cb628b 2137 int ret, early_data_state;
2a8db717 2138 size_t writtmp;
f7414b08 2139 uint32_t partialwrite;
49e7fe12 2140
49e7fe12
MC		 2141 switch (s->early_data_state) {
2142 case SSL_EARLY_DATA_NONE:
09f28874
MC		 2143 if (s->server
2144 || !SSL_in_before(s)
add8d0e9
MC		 2145 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2146 && (s->psk_use_session_cb == NULL))) {
6849b73c 2147 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2148 return 0;
2149 }
2150 /* fall through */
2151
2152 case SSL_EARLY_DATA_CONNECT_RETRY:
2153 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2154 ret = SSL_connect(s);
2155 if (ret <= 0) {
2156 /* NBIO or error */
2157 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2158 return 0;
2159 }
2160 /* fall through */
2161
2162 case SSL_EARLY_DATA_WRITE_RETRY:
2163 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2164 /*
2165 * We disable partial write for early data because we don't keep track
2166 * of how many bytes we've written between the SSL_write_ex() call and
2167 * the flush if the flush needs to be retried)
2168 */
2169 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2170 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2171 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2172 s->mode |= partialwrite;
2a8db717
MC		 2173 if (!ret) {
2174 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2175 return ret;
2176 }
2177 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2178 /* fall through */
2179
2180 case SSL_EARLY_DATA_WRITE_FLUSH:
2181 /* The buffering BIO is still in place so we need to flush it */
2182 if (statem_flush(s) != 1)
2183 return 0;
2a8db717 2184 *written = num;
49e7fe12 2185 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2186 return 1;
49e7fe12 2187
116d0da5 2188 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2189 case SSL_EARLY_DATA_READ_RETRY:
2190 early_data_state = s->early_data_state;
09f28874
MC		 2191 /* We are a server writing to an unauthenticated client */
2192 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2193 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2194 /* The buffering BIO is still in place */
2195 if (ret)
2196 (void)BIO_flush(s->wbio);
bbea9f2c 2197 s->early_data_state = early_data_state;
09f28874
MC		 2198 return ret;
2199
49e7fe12 2200 default:
6849b73c 2201 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2202 return 0;
2203 }
2204}
2205
4f43d0e7 2206int SSL_shutdown(SSL *s)
0f113f3e
MC		 2207{
2208 /*
2209 * Note that this function behaves differently from what one might
2210 * expect. Return values are 0 for no success (yet), 1 for success; but
2211 * calling it once is usually not enough, even if blocking I/O is used
2212 * (see ssl3_shutdown).
2213 */
2214
c4c32155 2215 if (s->handshake_func == NULL) {
6849b73c 2216 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2217 return -1;
2218 }
2219
64f9f406 2220 if (!SSL_in_init(s)) {
e8aa8b6c 2221 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2222 struct ssl_async_args args;
ec447924 2223
64f9f406
MC		 2224 args.s = s;
2225 args.type = OTHERFUNC;
2226 args.f.func_other = s->method->ssl_shutdown;
ec447924 2227
64f9f406
MC		 2228 return ssl_start_async_job(s, &args, ssl_io_intern);
2229 } else {
2230 return s->method->ssl_shutdown(s);
2231 }
ec447924 2232 } else {
6849b73c 2233 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
64f9f406 2234 return -1;
ec447924 2235 }
0f113f3e 2236}
d02b48c6 2237
4fbfe86a 2238int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2239{
f14afcaa 2240 /*
a9998e2f 2241 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2242 * negotiated, and that it is appropriate to call SSL_key_update() instead
2243 * of SSL_renegotiate().
2244 */
44c04a2e 2245 if (!SSL_IS_TLS13(s)) {
6849b73c 2246 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
44c04a2e
MC		 2247 return 0;
2248 }
2249
2250 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2251 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
6849b73c 2252 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
44c04a2e
MC		 2253 return 0;
2254 }
2255
2256 if (!SSL_is_init_finished(s)) {
6849b73c 2257 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
44c04a2e
MC		 2258 return 0;
2259 }
2260
2261 ossl_statem_set_in_init(s, 1);
44c04a2e 2262 s->key_update = updatetype;
44c04a2e
MC		 2263 return 1;
2264}
2265
3499327b 2266int SSL_get_key_update_type(const SSL *s)
53d1d07d
MC		 2267{
2268 return s->key_update;
2269}
2270
4f43d0e7 2271int SSL_renegotiate(SSL *s)
0f113f3e 2272{
44c04a2e 2273 if (SSL_IS_TLS13(s)) {
6849b73c 2274 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2275 return 0;
44c04a2e 2276 }
cda6b998 2277
db0f35dd 2278 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
6849b73c 2279 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
db0f35dd
TS		 2280 return 0;
2281 }
44959ee4 2282
db0f35dd 2283 s->renegotiate = 1;
0f113f3e 2284 s->new_session = 1;
44959ee4 2285
26a7d938 2286 return s->method->ssl_renegotiate(s);
0f113f3e 2287}
d02b48c6 2288
44959ee4 2289int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2290{
db0f35dd 2291 if (SSL_IS_TLS13(s)) {
6849b73c 2292 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2293 return 0;
db0f35dd 2294 }
cda6b998 2295
db0f35dd 2296 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
6849b73c 2297 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
db0f35dd
TS		 2298 return 0;
2299 }
c519e89f 2300
db0f35dd 2301 s->renegotiate = 1;
0f113f3e 2302 s->new_session = 0;
c519e89f 2303
26a7d938 2304 return s->method->ssl_renegotiate(s);
0f113f3e 2305}
44959ee4 2306
3499327b 2307int SSL_renegotiate_pending(const SSL *s)
0f113f3e
MC		 2308{
2309 /*
2310 * becomes true when negotiation is requested; false again once a
2311 * handshake has finished
2312 */
2313 return (s->renegotiate != 0);
2314}
2315
3bfacb5f
BK		 2316int SSL_new_session_ticket(SSL *s)
2317{
35774d55
BK		 2318 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2319 || !SSL_IS_TLS13(s))
2320 return 0;
2321 s->ext.extra_tickets_expected++;
2322 return 1;
3bfacb5f
BK		 2323}
2324
0f113f3e
MC		 2325long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2326{
2327 long l;
2328
2329 switch (cmd) {
2330 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2331 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2332 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2333 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2334 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2335 return l;
0f113f3e
MC		 2336
2337 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2338 s->msg_callback_arg = parg;
2339 return 1;
2340
0f113f3e
MC		 2341 case SSL_CTRL_MODE:
2342 return (s->mode |= larg);
2343 case SSL_CTRL_CLEAR_MODE:
2344 return (s->mode &= ~larg);
2345 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2346 return (long)s->max_cert_list;
0f113f3e 2347 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2348 if (larg < 0)
2349 return 0;
2350 l = (long)s->max_cert_list;
2351 s->max_cert_list = (size_t)larg;
2352 return l;
0f113f3e
MC		 2353 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2354 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2355 return 0;
50ec7505
BP		 2356#ifndef OPENSSL_NO_KTLS
2357 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2358 return 0;
2359#endif /* OPENSSL_NO_KTLS */
0f113f3e 2360 s->max_send_fragment = larg;
d102d9df
MC		 2361 if (s->max_send_fragment < s->split_send_fragment)
2362 s->split_send_fragment = s->max_send_fragment;
2363 return 1;
2364 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2365 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2366 return 0;
2367 s->split_send_fragment = larg;
0f113f3e 2368 return 1;
d102d9df
MC		 2369 case SSL_CTRL_SET_MAX_PIPELINES:
2370 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2371 return 0;
2372 s->max_pipelines = larg;
94777c9c
MC		 2373 if (larg > 1)
2374 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2375 return 1;
0f113f3e 2376 case SSL_CTRL_GET_RI_SUPPORT:
555cbb32 2377 return s->s3.send_connection_binding;
0f113f3e
MC		 2378 case SSL_CTRL_CERT_FLAGS:
2379 return (s->cert->cert_flags |= larg);
2380 case SSL_CTRL_CLEAR_CERT_FLAGS:
2381 return (s->cert->cert_flags &= ~larg);
2382
2383 case SSL_CTRL_GET_RAW_CIPHERLIST:
2384 if (parg) {
555cbb32 2385 if (s->s3.tmp.ciphers_raw == NULL)
0f113f3e 2386 return 0;
555cbb32
TS		 2387 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2388 return (int)s->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2389 } else {
2390 return TLS_CIPHER_LEN;
2391 }
c5364614 2392 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2393 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2394 return -1;
dccd20d1 2395 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2396 return 1;
2397 else
2398 return 0;
7946ab33 2399 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2400 return ssl_check_allowed_versions(larg, s->max_proto_version)
2401 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2402 &s->min_proto_version);
3edabd3c
CH		 2403 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2404 return s->min_proto_version;
7946ab33 2405 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2406 return ssl_check_allowed_versions(s->min_proto_version, larg)
2407 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2408 &s->max_proto_version);
3edabd3c
CH		 2409 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2410 return s->max_proto_version;
0f113f3e 2411 default:
26a7d938 2412 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2413 }
2414}
2415
2416long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2417{
2418 switch (cmd) {
2419 case SSL_CTRL_SET_MSG_CALLBACK:
2420 s->msg_callback = (void (*)
2421 (int write_p, int version, int content_type,
2422 const void *buf, size_t len, SSL *ssl,
2423 void *arg))(fp);
2424 return 1;
2425
2426 default:
26a7d938 2427 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2428 }
2429}
d3442bc7 2430
3c1d6bbc 2431LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2432{
2433 return ctx->sessions;
2434}
2435
2436long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2437{
2438 long l;
2439 /* For some cases with ctx == NULL perform syntax checks */
2440 if (ctx == NULL) {
2441 switch (cmd) {
de4d764e 2442 case SSL_CTRL_SET_GROUPS_LIST:
260009d8 2443 return tls1_set_groups_list(ctx, NULL, NULL, parg);
0f113f3e
MC		 2444 case SSL_CTRL_SET_SIGALGS_LIST:
2445 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2446 return tls1_set_sigalgs_list(NULL, parg, 0);
2447 default:
2448 return 0;
2449 }
2450 }
2451
2452 switch (cmd) {
2453 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2454 return ctx->read_ahead;
0f113f3e
MC		 2455 case SSL_CTRL_SET_READ_AHEAD:
2456 l = ctx->read_ahead;
2457 ctx->read_ahead = larg;
26a7d938 2458 return l;
0f113f3e
MC		 2459
2460 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2461 ctx->msg_callback_arg = parg;
2462 return 1;
2463
2464 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2465 return (long)ctx->max_cert_list;
0f113f3e 2466 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2467 if (larg < 0)
2468 return 0;
2469 l = (long)ctx->max_cert_list;
2470 ctx->max_cert_list = (size_t)larg;
2471 return l;
0f113f3e
MC		 2472
2473 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2474 if (larg < 0)
2475 return 0;
2476 l = (long)ctx->session_cache_size;
2477 ctx->session_cache_size = (size_t)larg;
2478 return l;
0f113f3e 2479 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2480 return (long)ctx->session_cache_size;
0f113f3e
MC		 2481 case SSL_CTRL_SET_SESS_CACHE_MODE:
2482 l = ctx->session_cache_mode;
2483 ctx->session_cache_mode = larg;
26a7d938 2484 return l;
0f113f3e 2485 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2486 return ctx->session_cache_mode;
0f113f3e
MC		 2487
2488 case SSL_CTRL_SESS_NUMBER:
26a7d938 2489 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2490 case SSL_CTRL_SESS_CONNECT:
9ef9088c 2491 return tsan_load(&ctx->stats.sess_connect);
0f113f3e 2492 case SSL_CTRL_SESS_CONNECT_GOOD:
9ef9088c 2493 return tsan_load(&ctx->stats.sess_connect_good);
0f113f3e 2494 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
9ef9088c 2495 return tsan_load(&ctx->stats.sess_connect_renegotiate);
0f113f3e 2496 case SSL_CTRL_SESS_ACCEPT:
9ef9088c 2497 return tsan_load(&ctx->stats.sess_accept);
0f113f3e 2498 case SSL_CTRL_SESS_ACCEPT_GOOD:
9ef9088c 2499 return tsan_load(&ctx->stats.sess_accept_good);
0f113f3e 2500 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
9ef9088c 2501 return tsan_load(&ctx->stats.sess_accept_renegotiate);
0f113f3e 2502 case SSL_CTRL_SESS_HIT:
9ef9088c 2503 return tsan_load(&ctx->stats.sess_hit);
0f113f3e 2504 case SSL_CTRL_SESS_CB_HIT:
9ef9088c 2505 return tsan_load(&ctx->stats.sess_cb_hit);
0f113f3e 2506 case SSL_CTRL_SESS_MISSES:
9ef9088c 2507 return tsan_load(&ctx->stats.sess_miss);
0f113f3e 2508 case SSL_CTRL_SESS_TIMEOUTS:
9ef9088c 2509 return tsan_load(&ctx->stats.sess_timeout);
0f113f3e 2510 case SSL_CTRL_SESS_CACHE_FULL:
9ef9088c 2511 return tsan_load(&ctx->stats.sess_cache_full);
0f113f3e
MC		 2512 case SSL_CTRL_MODE:
2513 return (ctx->mode |= larg);
2514 case SSL_CTRL_CLEAR_MODE:
2515 return (ctx->mode &= ~larg);
2516 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2517 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2518 return 0;
2519 ctx->max_send_fragment = larg;
d102d9df 2520 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2521 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2522 return 1;
d102d9df 2523 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2524 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2525 return 0;
2526 ctx->split_send_fragment = larg;
2527 return 1;
2528 case SSL_CTRL_SET_MAX_PIPELINES:
2529 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2530 return 0;
2531 ctx->max_pipelines = larg;
07077415 2532 return 1;
0f113f3e
MC		 2533 case SSL_CTRL_CERT_FLAGS:
2534 return (ctx->cert->cert_flags |= larg);
2535 case SSL_CTRL_CLEAR_CERT_FLAGS:
2536 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2537 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2538 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2539 && ssl_set_version_bound(ctx->method->version, (int)larg,
2540 &ctx->min_proto_version);
3edabd3c
CH		 2541 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2542 return ctx->min_proto_version;
7946ab33 2543 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2544 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2545 && ssl_set_version_bound(ctx->method->version, (int)larg,
2546 &ctx->max_proto_version);
3edabd3c
CH		 2547 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2548 return ctx->max_proto_version;
0f113f3e 2549 default:
26a7d938 2550 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2551 }
2552}
2553
2554long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2555{
2556 switch (cmd) {
2557 case SSL_CTRL_SET_MSG_CALLBACK:
2558 ctx->msg_callback = (void (*)
2559 (int write_p, int version, int content_type,
2560 const void *buf, size_t len, SSL *ssl,
2561 void *arg))(fp);
2562 return 1;
2563
2564 default:
26a7d938 2565 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2566 }
2567}
d3442bc7 2568
ccd86b68 2569int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2570{
90d9e49a
DSH		 2571 if (a->id > b->id)
2572 return 1;
2573 if (a->id < b->id)
2574 return -1;
2575 return 0;
0f113f3e
MC		 2576}
2577
2578int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2579 const SSL_CIPHER *const *bp)
2580{
90d9e49a
DSH		 2581 if ((*ap)->id > (*bp)->id)
2582 return 1;
2583 if ((*ap)->id < (*bp)->id)
2584 return -1;
2585 return 0;
0f113f3e 2586}
d02b48c6 2587
4f43d0e7 2588/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2589 * preference */
0821bcd4 2590STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2591{
2592 if (s != NULL) {
2593 if (s->cipher_list != NULL) {
26a7d938 2594 return s->cipher_list;
0f113f3e 2595 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2596 return s->ctx->cipher_list;
0f113f3e
MC		 2597 }
2598 }
26a7d938 2599 return NULL;
0f113f3e
MC		 2600}
2601
831eef2c
NM		 2602STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2603{
eee2a6a7 2604 if ((s == NULL) || !s->server)
831eef2c 2605 return NULL;
eee2a6a7 2606 return s->peer_ciphers;
831eef2c
NM		 2607}
2608
8b8e5bed 2609STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2610{
2611 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2612 int i;
1d0c08b4 2613
0f113f3e
MC		 2614 ciphers = SSL_get_ciphers(s);
2615 if (!ciphers)
2616 return NULL;
1d0c08b4
MC		 2617 if (!ssl_set_client_disabled(s))
2618 return NULL;
0f113f3e
MC		 2619 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2620 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2621 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2622 if (!sk)
2623 sk = sk_SSL_CIPHER_new_null();
2624 if (!sk)
2625 return NULL;
2626 if (!sk_SSL_CIPHER_push(sk, c)) {
2627 sk_SSL_CIPHER_free(sk);
2628 return NULL;
2629 }
2630 }
2631 }
2632 return sk;
2633}
8b8e5bed 2634
4f43d0e7 2635/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2636 * algorithm id */
f73e07cf 2637STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2638{
2639 if (s != NULL) {
2640 if (s->cipher_list_by_id != NULL) {
26a7d938 2641 return s->cipher_list_by_id;
0f113f3e 2642 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2643 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2644 }
2645 }
26a7d938 2646 return NULL;
0f113f3e 2647}
d02b48c6 2648
4f43d0e7 2649/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2650const char *SSL_get_cipher_list(const SSL *s, int n)
2651{
4a640fb6 2652 const SSL_CIPHER *c;
0f113f3e
MC		 2653 STACK_OF(SSL_CIPHER) *sk;
2654
2655 if (s == NULL)
26a7d938 2656 return NULL;
0f113f3e
MC		 2657 sk = SSL_get_ciphers(s);
2658 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2659 return NULL;
0f113f3e
MC		 2660 c = sk_SSL_CIPHER_value(sk, n);
2661 if (c == NULL)
26a7d938
K		 2662 return NULL;
2663 return c->name;
0f113f3e 2664}
d02b48c6 2665
9d5ac953
KY		 2666/** return a STACK of the ciphers available for the SSL_CTX and in order of
2667 * preference */
2668STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2669{
2670 if (ctx != NULL)
2671 return ctx->cipher_list;
2672 return NULL;
2673}
2674
3c83c5ba
SR		 2675/*
2676 * Distinguish between ciphers controlled by set_ciphersuite() and
2677 * set_cipher_list() when counting.
2678 */
2679static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2680{
2681 int i, num = 0;
2682 const SSL_CIPHER *c;
2683
2684 if (sk == NULL)
2685 return 0;
2686 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2687 c = sk_SSL_CIPHER_value(sk, i);
2688 if (c->min_tls >= TLS1_3_VERSION)
2689 continue;
2690 num++;
2691 }
2692 return num;
2693}
2694
25f923dd 2695/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2696int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2697{
2698 STACK_OF(SSL_CIPHER) *sk;
2699
a68eee67 2700 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
f865b081
MC		 2701 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2702 ctx->cert);
0f113f3e
MC		 2703 /*
2704 * ssl_create_cipher_list may return an empty stack if it was unable to
2705 * find a cipher matching the given rule string (for example if the rule
2706 * string specifies a cipher which has been disabled). This is not an
2707 * error as far as ssl_create_cipher_list is concerned, and hence
2708 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2709 */
2710 if (sk == NULL)
2711 return 0;
3c83c5ba 2712 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 2713 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 2714 return 0;
2715 }
2716 return 1;
2717}
d02b48c6 2718
4f43d0e7 2719/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2720int SSL_set_cipher_list(SSL *s, const char *str)
2721{
2722 STACK_OF(SSL_CIPHER) *sk;
2723
a68eee67 2724 sk = ssl_create_cipher_list(s->ctx, s->tls13_ciphersuites,
f865b081
MC		 2725 &s->cipher_list, &s->cipher_list_by_id, str,
2726 s->cert);
0f113f3e
MC		 2727 /* see comment in SSL_CTX_set_cipher_list */
2728 if (sk == NULL)
2729 return 0;
3c83c5ba 2730 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 2731 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 2732 return 0;
2733 }
2734 return 1;
2735}
d02b48c6 2736
a216df59 2737char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 2738{
2739 char *p;
a216df59 2740 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 2741 const SSL_CIPHER *c;
0f113f3e
MC		 2742 int i;
2743
a216df59 2744 if (!s->server
eee2a6a7 2745 || s->peer_ciphers == NULL
a216df59 2746 || size < 2)
26a7d938 2747 return NULL;
0f113f3e
MC		 2748
2749 p = buf;
eee2a6a7 2750 clntsk = s->peer_ciphers;
a216df59
MC		 2751 srvrsk = SSL_get_ciphers(s);
2752 if (clntsk == NULL || srvrsk == NULL)
2753 return NULL;
0f113f3e 2754
a216df59 2755 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 2756 return NULL;
2757
a216df59 2758 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 2759 int n;
2760
a216df59
MC		 2761 c = sk_SSL_CIPHER_value(clntsk, i);
2762 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2763 continue;
2764
0f113f3e 2765 n = strlen(c->name);
a216df59 2766 if (n + 1 > size) {
0f113f3e
MC		 2767 if (p != buf)
2768 --p;
2769 *p = '\0';
2770 return buf;
2771 }
4cacc9d5 2772 strcpy(p, c->name);
0f113f3e
MC		 2773 p += n;
2774 *(p++) = ':';
a216df59 2775 size -= n + 1;
0f113f3e
MC		 2776 }
2777 p[-1] = '\0';
26a7d938 2778 return buf;
0f113f3e
MC		 2779}
2780
7955c1f1
MC		 2781/**
2782 * Return the requested servername (SNI) value. Note that the behaviour varies
2783 * depending on:
2784 * - whether this is called by the client or the server,
2785 * - if we are before or during/after the handshake,
2786 * - if a resumption or normal handshake is being attempted/has occurred
2787 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2788 *
2789 * Note that only the host_name type is defined (RFC 3546).
ed3883d2 2790 */
f1fd4544 2791const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e 2792{
7955c1f1
MC		 2793 /*
2794 * If we don't know if we are the client or the server yet then we assume
2795 * client.
2796 */
2797 int server = s->handshake_func == NULL ? 0 : s->server;
0f113f3e
MC		 2798 if (type != TLSEXT_NAMETYPE_host_name)
2799 return NULL;
a13c20f6 2800
7955c1f1
MC		 2801 if (server) {
2802 /**
2803 * Server side
2804 * In TLSv1.3 on the server SNI is not associated with the session
2805 * but in TLSv1.2 or below it is.
2806 *
2807 * Before the handshake:
2808 * - return NULL
2809 *
2810 * During/after the handshake (TLSv1.2 or below resumption occurred):
2811 * - If a servername was accepted by the server in the original
2812 * handshake then it will return that servername, or NULL otherwise.
2813 *
2814 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2815 * - The function will return the servername requested by the client in
2816 * this handshake or NULL if none was requested.
2817 */
2818 if (s->hit && !SSL_IS_TLS13(s))
2819 return s->session->ext.hostname;
2820 } else {
2821 /**
2822 * Client side
2823 *
2824 * Before the handshake:
2825 * - If a servername has been set via a call to
2826 * SSL_set_tlsext_host_name() then it will return that servername
2827 * - If one has not been set, but a TLSv1.2 resumption is being
2828 * attempted and the session from the original handshake had a
2829 * servername accepted by the server then it will return that
2830 * servername
2831 * - Otherwise it returns NULL
2832 *
2833 * During/after the handshake (TLSv1.2 or below resumption occurred):
9f7505ab 2834 * - If the session from the original handshake had a servername accepted
7955c1f1
MC		 2835 * by the server then it will return that servername.
2836 * - Otherwise it returns the servername set via
2837 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2838 *
2839 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2840 * - It will return the servername set via SSL_set_tlsext_host_name()
2841 * (or NULL if it was not called).
2842 */
2843 if (SSL_in_before(s)) {
2844 if (s->ext.hostname == NULL
2845 && s->session != NULL
2846 && s->session->ssl_version != TLS1_3_VERSION)
2847 return s->session->ext.hostname;
2848 } else {
2849 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2850 return s->session->ext.hostname;
2851 }
2852 }
2853
328a0547 2854 return s->ext.hostname;
0f113f3e 2855}
ed3883d2 2856
f1fd4544 2857int SSL_get_servername_type(const SSL *s)
0f113f3e 2858{
7955c1f1 2859 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
0f113f3e
MC		 2860 return TLSEXT_NAMETYPE_host_name;
2861 return -1;
2862}
ee2ffc27 2863
0f113f3e
MC		 2864/*
2865 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2866 * expected that this function is called from the callback set by
0f113f3e
MC		 2867 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2868 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2869 * not included in the length. A byte string of length 0 is invalid. No byte
2870 * string may be truncated. The current, but experimental algorithm for
2871 * selecting the protocol is: 1) If the server doesn't support NPN then this
2872 * is indicated to the callback. In this case, the client application has to
2873 * abort the connection or have a default application level protocol. 2) If
2874 * the server supports NPN, but advertises an empty list then the client
f430ba31 2875 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2876 * fallback case was enacted. 3) Otherwise, the client finds the first
2877 * protocol in the server's list that it supports and selects this protocol.
2878 * This is because it's assumed that the server has better information about
2879 * which protocol a client should use. 4) If the client doesn't support any
2880 * of the server's advertised protocols, then this is treated the same as
2881 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2882 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2883 */
0f113f3e
MC		 2884int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2885 const unsigned char *server,
2886 unsigned int server_len,
a230b26e 2887 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2888{
2889 unsigned int i, j;
2890 const unsigned char *result;
2891 int status = OPENSSL_NPN_UNSUPPORTED;
2892
2893 /*
2894 * For each protocol in server preference order, see if we support it.
2895 */
2896 for (i = 0; i < server_len;) {
2897 for (j = 0; j < client_len;) {
2898 if (server[i] == client[j] &&
2899 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2900 /* We found a match */
2901 result = &server[i];
2902 status = OPENSSL_NPN_NEGOTIATED;
2903 goto found;
2904 }
2905 j += client[j];
2906 j++;
2907 }
2908 i += server[i];
2909 i++;
2910 }
2911
2912 /* There's no overlap between our protocols and the server's list. */
2913 result = client;
2914 status = OPENSSL_NPN_NO_OVERLAP;
2915
2916 found:
2917 *out = (unsigned char *)result + 1;
2918 *outlen = result[0];
2919 return status;
2920}
ee2ffc27 2921
e481f9b9 2922#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2923/*
2924 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2925 * client's requested protocol for this connection and returns 0. If the
2926 * client didn't request any protocol, then *data is set to NULL. Note that
2927 * the client can request any protocol it chooses. The value returned from
2928 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2929 * provided by the callback.
2930 */
0f113f3e
MC		 2931void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2932 unsigned *len)
2933{
aff8c126 2934 *data = s->ext.npn;
12a765a5 2935 if (*data == NULL) {
0f113f3e
MC		 2936 *len = 0;
2937 } else {
aff8c126 2938 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2939 }
2940}
2941
2942/*
aff8c126 2943 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2944 * a TLS server needs a list of supported protocols for Next Protocol
2945 * Negotiation. The returned list must be in wire format. The list is
2946 * returned by setting |out| to point to it and |outlen| to its length. This
2947 * memory will not be modified, but one should assume that the SSL* keeps a
2948 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2949 * wishes to advertise. Otherwise, no such extension will be included in the
2950 * ServerHello.
2951 */
aff8c126 2952void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2953 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2954 void *arg)
0f113f3e 2955{
aff8c126
RS		 2956 ctx->ext.npn_advertised_cb = cb;
2957 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2958}
2959
2960/*
2961 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2962 * client needs to select a protocol from the server's provided list. |out|
2963 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2964 * The length of the protocol name must be written into |outlen|. The
2965 * server's advertised protocols are provided in |in| and |inlen|. The
2966 * callback can assume that |in| is syntactically valid. The client must
2967 * select a protocol. It is fatal to the connection if this callback returns
2968 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2969 */
aff8c126 2970void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2971 SSL_CTX_npn_select_cb_func cb,
aff8c126 2972 void *arg)
0f113f3e 2973{
aff8c126
RS		 2974 ctx->ext.npn_select_cb = cb;
2975 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2976}
e481f9b9 2977#endif
a398f821 2978
0f113f3e
MC		 2979/*
2980 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2981 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2982 * length-prefixed strings). Returns 0 on success.
2983 */
2984int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2985 unsigned int protos_len)
0f113f3e 2986{
aff8c126
RS		 2987 OPENSSL_free(ctx->ext.alpn);
2988 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2989 if (ctx->ext.alpn == NULL) {
6849b73c 2990 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 2991 return 1;
72e9be3d 2992 }
aff8c126 2993 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2994
2995 return 0;
2996}
2997
2998/*
2999 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 3000 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 3001 * length-prefixed strings). Returns 0 on success.
3002 */
3003int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 3004 unsigned int protos_len)
0f113f3e 3005{
aff8c126
RS		 3006 OPENSSL_free(ssl->ext.alpn);
3007 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
3008 if (ssl->ext.alpn == NULL) {
6849b73c 3009 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3010 return 1;
72e9be3d 3011 }
aff8c126 3012 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 3013
3014 return 0;
3015}
3016
3017/*
3018 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3019 * called during ClientHello processing in order to select an ALPN protocol
3020 * from the client's list of offered protocols.
3021 */
3022void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 3023 SSL_CTX_alpn_select_cb_func cb,
3024 void *arg)
0f113f3e 3025{
aff8c126
RS		 3026 ctx->ext.alpn_select_cb = cb;
3027 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 3028}
3029
3030/*
69687aa8
F		 3031 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3032 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 3033 * (not including the leading length-prefix byte). If the server didn't
3034 * respond with a negotiated protocol then |*len| will be zero.
3035 */
6f017a8f 3036void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 3037 unsigned int *len)
0f113f3e 3038{
555cbb32 3039 *data = ssl->s3.alpn_selected;
0f113f3e
MC		 3040 if (*data == NULL)
3041 *len = 0;
3042 else
555cbb32 3043 *len = (unsigned int)ssl->s3.alpn_selected_len;
0f113f3e
MC		 3044}
3045
74b4b494 3046int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 3047 const char *label, size_t llen,
23cec1f4 3048 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 3049 int use_context)
3050{
dffeec1c
TM		 3051 if (s->session == NULL
3052 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
0f113f3e 3053 return -1;
e0af0405 3054
0f113f3e 3055 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 3056 llen, context,
3057 contextlen, use_context);
0f113f3e 3058}
e0af0405 3059
b38ede80
TT		 3060int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3061 const char *label, size_t llen,
3062 const unsigned char *context,
3063 size_t contextlen)
3064{
3065 if (s->version != TLS1_3_VERSION)
3066 return 0;
3067
3068 return tls13_export_keying_material_early(s, out, olen, label, llen,
3069 context, contextlen);
3070}
3071
3c1d6bbc 3072static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 3073{
bd5d27c1 3074 const unsigned char *session_id = a->session_id;
0f113f3e 3075 unsigned long l;
bd5d27c1
DB		 3076 unsigned char tmp_storage[4];
3077
3078 if (a->session_id_length < sizeof(tmp_storage)) {
3079 memset(tmp_storage, 0, sizeof(tmp_storage));
3080 memcpy(tmp_storage, a->session_id, a->session_id_length);
3081 session_id = tmp_storage;
3082 }
0f113f3e
MC		 3083
3084 l = (unsigned long)
bd5d27c1
DB		 3085 ((unsigned long)session_id[0]) |
3086 ((unsigned long)session_id[1] << 8L) |
3087 ((unsigned long)session_id[2] << 16L) |
3088 ((unsigned long)session_id[3] << 24L);
26a7d938 3089 return l;
0f113f3e
MC		 3090}
3091
3092/*
3093 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3094 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3095 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3096 * being able to construct an SSL_SESSION that will collide with any existing
3097 * session with a matching session ID.
3098 */
3099static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3100{
3101 if (a->ssl_version != b->ssl_version)
208fb891 3102 return 1;
0f113f3e 3103 if (a->session_id_length != b->session_id_length)
208fb891 3104 return 1;
26a7d938 3105 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3106}
3107
3108/*
3109 * These wrapper functions should remain rather than redeclaring
d0fa136c 3110 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3111 * variable. The reason is that the functions aren't static, they're exposed
3112 * via ssl.h.
3113 */
97b17195 3114
b4250010 3115SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
d8652be0 3116 const SSL_METHOD *meth)
0f113f3e
MC		 3117{
3118 SSL_CTX *ret = NULL;
3119
3120 if (meth == NULL) {
6849b73c 3121 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3122 return NULL;
0f113f3e
MC		 3123 }
3124
0fc32b07
MC		 3125 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3126 return NULL;
7fa792d1 3127
0f113f3e 3128 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
6849b73c 3129 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
0f113f3e
MC		 3130 goto err;
3131 }
b51bce94 3132 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3133 if (ret == NULL)
3134 goto err;
3135
ba18627e
MC		 3136 ret->libctx = libctx;
3137 if (propq != NULL) {
3138 ret->propq = OPENSSL_strdup(propq);
3139 if (ret->propq == NULL)
3140 goto err;
3141 }
3142
0f113f3e 3143 ret->method = meth;
7946ab33
KR		 3144 ret->min_proto_version = 0;
3145 ret->max_proto_version = 0;
693cf80c 3146 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3147 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3148 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3149 /* We take the system default. */
0f113f3e 3150 ret->session_timeout = meth->get_timeout();
0f113f3e 3151 ret->references = 1;
16203f7b
AG		 3152 ret->lock = CRYPTO_THREAD_lock_new();
3153 if (ret->lock == NULL) {
6849b73c 3154 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
16203f7b
AG		 3155 OPENSSL_free(ret);
3156 return NULL;
3157 }
0f113f3e 3158 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3159 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3160 if ((ret->cert = ssl_cert_new()) == NULL)
3161 goto err;
3162
62d0577e 3163 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3164 if (ret->sessions == NULL)
3165 goto err;
3166 ret->cert_store = X509_STORE_new();
3167 if (ret->cert_store == NULL)
3168 goto err;
ed29e82a 3169#ifndef OPENSSL_NO_CT
d8652be0 3170 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
ed29e82a
RP		 3171 if (ret->ctlog_store == NULL)
3172 goto err;
3173#endif
f865b081 3174
c8f6c28a
MC		 3175 /* initialize cipher/digest methods table */
3176 if (!ssl_load_ciphers(ret))
075b1f2f 3177 goto err2;
263ff2c9
MC		 3178 /* initialise sig algs */
3179 if (!ssl_setup_sig_algs(ret))
3180 goto err2;
3181
c8f6c28a 3182
9d2d857f
MC		 3183 if (!ssl_load_groups(ret))
3184 goto err2;
3185
5d120511 3186 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
f865b081
MC		 3187 goto err;
3188
a68eee67 3189 if (!ssl_create_cipher_list(ret,
f865b081 3190 ret->tls13_ciphersuites,
a230b26e 3191 &ret->cipher_list, &ret->cipher_list_by_id,
5d120511 3192 OSSL_default_cipher_list(), ret->cert)
a230b26e 3193 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
6849b73c 3194 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
0f113f3e
MC		 3195 goto err2;
3196 }
3197
3198 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3199 if (ret->param == NULL)
0f113f3e
MC		 3200 goto err;
3201
c8f6c28a
MC		 3202 /*
3203 * If these aren't available from the provider we'll get NULL returns.
3204 * That's fine but will cause errors later if SSLv3 is negotiated
3205 */
3206 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3207 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
0f113f3e 3208
fa7c2637 3209 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3210 goto err;
3211
98732979
MC		 3212 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3213 goto err;
3214
25a807bc
F		 3215 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3216 goto err;
0f113f3e 3217
4bfb96f2
TS		 3218 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3219 goto err;
3220
0f113f3e
MC		 3221 /* No compression for DTLS */
3222 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3223 ret->comp_methods = SSL_COMP_get_compression_methods();
3224
3225 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3226 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3227
4e2e1ec9 3228 /* Setup RFC5077 ticket keys */
8f21260b
MC		 3229 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3230 sizeof(ret->ext.tick_key_name)) <= 0)
3231 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3232 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3233 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3234 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
0f113f3e 3235 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3236
8f21260b
MC		 3237 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3238 sizeof(ret->ext.cookie_hmac_key)) <= 0)
43054d3d
MC		 3239 goto err;
3240
edc032b5 3241#ifndef OPENSSL_NO_SRP
61986d32 3242 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 3243 goto err;
edc032b5 3244#endif
4db9677b 3245#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3246# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3247# define eng_strx(x) #x
3248# define eng_str(x) eng_strx(x)
3249 /* Use specific client engine automatically... ignore errors */
3250 {
3251 ENGINE *eng;
3252 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3253 if (!eng) {
3254 ERR_clear_error();
3255 ENGINE_load_builtin_engines();
3256 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3257 }
3258 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3259 ERR_clear_error();
3260 }
3261# endif
3262#endif
3263 /*
3264 * Default is to connect to non-RI servers. When RI is more widely
3265 * deployed might change this.
3266 */
3267 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3268 /*
3269 * Disable compression by default to prevent CRIME. Applications can
3270 * re-enable compression by configuring
3271 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3272 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3273 * middlebox compatibility by default. This may be disabled by default in
3274 * a later OpenSSL version.
dc5744cb 3275 */
a5816a5a 3276 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3277
aff8c126 3278 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3279
bfa9a9af 3280 /*
c39e4048
BK		 3281 * We cannot usefully set a default max_early_data here (which gets
3282 * propagated in SSL_new(), for the following reason: setting the
3283 * SSL field causes tls_construct_stoc_early_data() to tell the
3284 * client that early data will be accepted when constructing a TLS 1.3
3285 * session ticket, and the client will accordingly send us early data
3286 * when using that ticket (if the client has early data to send).
3287 * However, in order for the early data to actually be consumed by
3288 * the application, the application must also have calls to
3289 * SSL_read_early_data(); otherwise we'll just skip past the early data
3290 * and ignore it. So, since the application must add calls to
3291 * SSL_read_early_data(), we also require them to add
3292 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3293 * eliminating the bandwidth-wasting early data in the case described
3294 * above.
bfa9a9af 3295 */
c39e4048 3296 ret->max_early_data = 0;
bfa9a9af 3297
4e8548e8
MC		 3298 /*
3299 * Default recv_max_early_data is a fully loaded single record. Could be
3300 * split across multiple records in practice. We set this differently to
3301 * max_early_data so that, in the default case, we do not advertise any
3302 * support for early_data, but if a client were to send us some (e.g.
3303 * because of an old, stale ticket) then we will tolerate it and skip over
3304 * it.
3305 */
3306 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3307
36ff232c
MC		 3308 /* By default we send two session tickets automatically in TLSv1.3 */
3309 ret->num_tickets = 2;
9d0a8bb7 3310
8a5ed9dc
TM		 3311 ssl_ctx_system_config(ret);
3312
16203f7b 3313 return ret;
0f113f3e 3314 err:
6849b73c 3315 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3316 err2:
e0e920b1 3317 SSL_CTX_free(ret);
16203f7b 3318 return NULL;
0f113f3e 3319}
d02b48c6 3320
ba18627e
MC		 3321SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3322{
d8652be0 3323 return SSL_CTX_new_ex(NULL, NULL, meth);
ba18627e
MC		 3324}
3325
c5ebfcab 3326int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3327{
16203f7b 3328 int i;
c5ebfcab 3329
2f545ae4 3330 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3331 return 0;
3332
3333 REF_PRINT_COUNT("SSL_CTX", ctx);
3334 REF_ASSERT_ISNT(i < 2);
3335 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3336}
3337
4f43d0e7 3338void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3339{
3340 int i;
9d2d857f 3341 size_t j;
d02b48c6 3342
0f113f3e
MC		 3343 if (a == NULL)
3344 return;
d02b48c6 3345
2f545ae4 3346 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3347 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3348 if (i > 0)
3349 return;
f3f1cf84 3350 REF_ASSERT_ISNT(i < 0);
0f113f3e 3351
222561fe 3352 X509_VERIFY_PARAM_free(a->param);
919ba009 3353 dane_ctx_final(&a->dane);
0f113f3e
MC		 3354
3355 /*
3356 * Free internal session cache. However: the remove_cb() may reference
3357 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3358 * after the sessions were flushed.
3359 * As the ex_data handling routines might also touch the session cache,
3360 * the most secure solution seems to be: empty (flush) the cache, then
3361 * free ex_data, then finally free the cache.
3362 * (See ticket [openssl.org #212].)
3363 */
3364 if (a->sessions != NULL)
3365 SSL_CTX_flush_sessions(a, 0);
3366
3367 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3368 lh_SSL_SESSION_free(a->sessions);
222561fe 3369 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3370#ifndef OPENSSL_NO_CT
3371 CTLOG_STORE_free(a->ctlog_store);
3372#endif
25aaa98a
RS		 3373 sk_SSL_CIPHER_free(a->cipher_list);
3374 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3375 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3376 ssl_cert_free(a->cert);
fa7c2637 3377 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3378 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
222561fe 3379 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3380 a->comp_methods = NULL;
e783bae2 3381#ifndef OPENSSL_NO_SRTP
25aaa98a 3382 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3383#endif
edc032b5 3384#ifndef OPENSSL_NO_SRP
0f113f3e 3385 SSL_CTX_SRP_CTX_free(a);
edc032b5 3386#endif
bdfe932d 3387#ifndef OPENSSL_NO_ENGINE
301fcb28 3388 tls_engine_finish(a->client_cert_engine);
ddac1974 3389#endif
8671b898 3390
aff8c126 3391 OPENSSL_free(a->ext.ecpointformats);
187753e0 3392 OPENSSL_free(a->ext.supportedgroups);
ddf8f1ce 3393 OPENSSL_free(a->ext.supported_groups_default);
aff8c126 3394 OPENSSL_free(a->ext.alpn);
4bfb96f2 3395 OPENSSL_secure_free(a->ext.secure);
8671b898 3396
c8f6c28a
MC		 3397 ssl_evp_md_free(a->md5);
3398 ssl_evp_md_free(a->sha1);
3399
9d2d857f
MC		 3400 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3401 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3402 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3403 ssl_evp_md_free(a->ssl_digest_methods[j]);
3404 for (j = 0; j < a->group_list_len; j++) {
3405 OPENSSL_free(a->group_list[j].tlsname);
3406 OPENSSL_free(a->group_list[j].realname);
3407 OPENSSL_free(a->group_list[j].algorithm);
3408 }
3409 OPENSSL_free(a->group_list);
c8f6c28a 3410
263ff2c9
MC		 3411 OPENSSL_free(a->sigalg_lookup_cache);
3412
16203f7b
AG		 3413 CRYPTO_THREAD_lock_free(a->lock);
3414
ba18627e
MC		 3415 OPENSSL_free(a->propq);
3416
0f113f3e
MC		 3417 OPENSSL_free(a);
3418}
d02b48c6 3419
3ae76679 3420void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3421{
3422 ctx->default_passwd_callback = cb;
3423}
3424
3425void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3426{
3427 ctx->default_passwd_callback_userdata = u;
3428}
3429
0c452abc
CH		 3430pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3431{
3432 return ctx->default_passwd_callback;
3433}
3434
3435void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3436{
3437 return ctx->default_passwd_callback_userdata;
3438}
3439
a974e64a
MC		 3440void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3441{
3442 s->default_passwd_callback = cb;
3443}
3444
3445void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3446{
3447 s->default_passwd_callback_userdata = u;
3448}
3449
0c452abc
CH		 3450pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3451{
3452 return s->default_passwd_callback;
3453}
3454
3455void *SSL_get_default_passwd_cb_userdata(SSL *s)
3456{
3457 return s->default_passwd_callback_userdata;
3458}
3459
0f113f3e
MC		 3460void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3461 int (*cb) (X509_STORE_CTX *, void *),
3462 void *arg)
3463{
3464 ctx->app_verify_callback = cb;
3465 ctx->app_verify_arg = arg;
3466}
3467
3468void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3469 int (*cb) (int, X509_STORE_CTX *))
3470{
3471 ctx->verify_mode = mode;
3472 ctx->default_verify_callback = cb;
3473}
3474
3475void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3476{
3477 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3478}
3479
a230b26e 3480void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3481{
3482 ssl_cert_set_cert_cb(c->cert, cb, arg);
3483}
3484
3485void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3486{
3487 ssl_cert_set_cert_cb(s->cert, cb, arg);
3488}
18d71588 3489
2cf28d61 3490void ssl_set_masks(SSL *s)
0f113f3e 3491{
6383d316 3492 CERT *c = s->cert;
555cbb32 3493 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 3494 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3495 unsigned long mask_k, mask_a;
361a1191 3496 int have_ecc_cert, ecdsa_ok;
462f4f4b 3497
0f113f3e
MC		 3498 if (c == NULL)
3499 return;
d02b48c6 3500
13c45372 3501 dh_tmp = (c->dh_tmp != NULL
13c45372 3502 || c->dh_tmp_cb != NULL
13c45372 3503 || c->dh_tmp_auto);
d02b48c6 3504
d0ff28f8 3505 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3506 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3507 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
6383d316 3508 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
0f113f3e
MC		 3509 mask_k = 0;
3510 mask_a = 0;
0e1dba93 3511
77359d22
RL		 3512 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3513 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 3514
2a9b9654 3515#ifndef OPENSSL_NO_GOST
4020c0b3 3516 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
5a5530a2 3517 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3518 mask_a |= SSL_aGOST12;
3519 }
4020c0b3 3520 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
5a5530a2 3521 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3522 mask_a |= SSL_aGOST12;
3523 }
4020c0b3 3524 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3525 mask_k |= SSL_kGOST;
3526 mask_a |= SSL_aGOST01;
3527 }
2a9b9654 3528#endif
0f113f3e 3529
361a1191 3530 if (rsa_enc)
0f113f3e 3531 mask_k |= SSL_kRSA;
d02b48c6 3532
0f113f3e
MC		 3533 if (dh_tmp)
3534 mask_k |= SSL_kDHE;
d02b48c6 3535
6aaa29fb
DSH		 3536 /*
3537 * If we only have an RSA-PSS certificate allow RSA authentication
3538 * if TLS 1.2 and peer supports it.
3539 */
3540
3541 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3542 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3543 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3544 mask_a |= SSL_aRSA;
d02b48c6 3545
0f113f3e
MC		 3546 if (dsa_sign) {
3547 mask_a |= SSL_aDSS;
0f113f3e 3548 }
d02b48c6 3549
0f113f3e 3550 mask_a |= SSL_aNULL;
d02b48c6 3551
0f113f3e
MC		 3552 /*
3553 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3554 * depending on the key usage extension.
3555 */
0f113f3e 3556 if (have_ecc_cert) {
a8d8e06b 3557 uint32_t ex_kusage;
4020c0b3 3558 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3559 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3560 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3561 ecdsa_ok = 0;
c7c46256 3562 if (ecdsa_ok)
0f113f3e 3563 mask_a |= SSL_aECDSA;
0f113f3e 3564 }
b2021556
DSH		 3565 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3566 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3567 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3568 && TLS1_get_version(s) == TLS1_2_VERSION)
3569 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3570
3571 /* Allow Ed448 for TLS 1.2 if peer supports it */
3572 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3573 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3574 && TLS1_get_version(s) == TLS1_2_VERSION)
3575 mask_a |= SSL_aECDSA;
ea262260 3576
fe6ef247 3577 mask_k |= SSL_kECDHE;
ddac1974
NL		 3578
3579#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3580 mask_k |= SSL_kPSK;
3581 mask_a |= SSL_aPSK;
526f94ad
DSH		 3582 if (mask_k & SSL_kRSA)
3583 mask_k |= SSL_kRSAPSK;
3584 if (mask_k & SSL_kDHE)
3585 mask_k |= SSL_kDHEPSK;
3586 if (mask_k & SSL_kECDHE)
3587 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3588#endif
3589
555cbb32
TS		 3590 s->s3.tmp.mask_k = mask_k;
3591 s->s3.tmp.mask_a = mask_a;
0f113f3e 3592}
d02b48c6 3593
a2f9200f 3594int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3595{
555cbb32 3596 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3597 /* key usage, if present, must allow signing */
ce0c1f2b 3598 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
6849b73c 3599 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
0f113f3e
MC		 3600 return 0;
3601 }
3602 }
0f113f3e
MC		 3603 return 1; /* all checks are ok */
3604}
ea262260 3605
a398f821 3606int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3607 size_t *serverinfo_length)
3608{
555cbb32 3609 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 3610 *serverinfo_length = 0;
3611
a497cf25 3612 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3613 return 0;
3614
a497cf25
DSH		 3615 *serverinfo = cpk->serverinfo;
3616 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3617 return 1;
3618}
0f113f3e
MC		 3619
3620void ssl_update_cache(SSL *s, int mode)
3621{
3622 int i;
3623
3624 /*
3625 * If the session_id_length is 0, we are not supposed to cache it, and it
3626 * would be rather hard to do anyway :-)
3627 */
3628 if (s->session->session_id_length == 0)
3629 return;
3630
d316cdcf
BK		 3631 /*
3632 * If sid_ctx_length is 0 there is no specific application context
3633 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 3634 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3635 * indication that this is actually a session for the proper application
3636 * context, and the *handshake* will fail, not just the resumption attempt.
3637 * Do not cache (on the server) these sessions that are not resumable
3638 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 3639 */
c4fa1f7f 3640 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 3641 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3642 return;
3643
0f113f3e 3644 i = s->session_ctx->session_cache_mode;
5d61491c 3645 if ((i & mode) != 0
ee94ec2e
MC		 3646 && (!s->hit || SSL_IS_TLS13(s))) {
3647 /*
3648 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 3649 * normally don't do this because by default it's a full stateless ticket
3650 * with only a dummy session id so there is no reason to cache it,
3651 * unless:
ee94ec2e
MC		 3652 * - we are doing early_data, in which case we cache so that we can
3653 * detect replays
3654 * - the application has set a remove_session_cb so needs to know about
3655 * session timeout events
6cc0b3c2 3656 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 3657 */
3658 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3659 && (!SSL_IS_TLS13(s)
3660 || !s->server
5d263fb7
MC		 3661 || (s->max_early_data > 0
3662 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 3663 || s->session_ctx->remove_session_cb != NULL
3664 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 3665 SSL_CTX_add_session(s->session_ctx, s->session);
3666
3667 /*
3668 * Add the session to the external cache. We do this even in server side
3669 * TLSv1.3 without early data because some applications just want to
3670 * know about the creation of a session and aren't doing a full cache.
3671 */
3672 if (s->session_ctx->new_session_cb != NULL) {
3673 SSL_SESSION_up_ref(s->session);
3674 if (!s->session_ctx->new_session_cb(s, s->session))
3675 SSL_SESSION_free(s->session);
3676 }
0f113f3e
MC		 3677 }
3678
3679 /* auto flush every 255 connections */
3680 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 3681 TSAN_QUALIFIER int *stat;
1fcb4e4d
BK		 3682 if (mode & SSL_SESS_CACHE_CLIENT)
3683 stat = &s->session_ctx->stats.sess_connect_good;
3684 else
3685 stat = &s->session_ctx->stats.sess_accept_good;
9ef9088c 3686 if ((tsan_load(stat) & 0xff) == 0xff)
0f113f3e 3687 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3688 }
3689}
d02b48c6 3690
3499327b 3691const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 3692{
3693 return ctx->method;
3694}
ba168244 3695
3499327b 3696const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 3697{
26a7d938 3698 return s->method;
0f113f3e 3699}
d02b48c6 3700
4ebb342f 3701int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3702{
0f113f3e
MC		 3703 int ret = 1;
3704
3705 if (s->method != meth) {
919ba009 3706 const SSL_METHOD *sm = s->method;
a230b26e 3707 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3708
919ba009 3709 if (sm->version == meth->version)
0f113f3e
MC		 3710 s->method = meth;
3711 else {
919ba009 3712 sm->ssl_free(s);
0f113f3e
MC		 3713 s->method = meth;
3714 ret = s->method->ssl_new(s);
3715 }
3716
919ba009 3717 if (hf == sm->ssl_connect)
0f113f3e 3718 s->handshake_func = meth->ssl_connect;
919ba009 3719 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3720 s->handshake_func = meth->ssl_accept;
3721 }
26a7d938 3722 return ret;
0f113f3e
MC		 3723}
3724
3725int SSL_get_error(const SSL *s, int i)
3726{
3727 int reason;
3728 unsigned long l;
3729 BIO *bio;
3730
3731 if (i > 0)
26a7d938 3732 return SSL_ERROR_NONE;
0f113f3e
MC		 3733
3734 /*
3735 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3736 * where we do encode the error
3737 */
3738 if ((l = ERR_peek_error()) != 0) {
3739 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3740 return SSL_ERROR_SYSCALL;
0f113f3e 3741 else
26a7d938 3742 return SSL_ERROR_SSL;
0f113f3e
MC		 3743 }
3744
8051ab2b
MC		 3745 if (SSL_want_read(s)) {
3746 bio = SSL_get_rbio(s);
3747 if (BIO_should_read(bio))
26a7d938 3748 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3749 else if (BIO_should_write(bio))
3750 /*
3751 * This one doesn't make too much sense ... We never try to write
3752 * to the rbio, and an application program where rbio and wbio
3753 * are separate couldn't even know what it should wait for.
3754 * However if we ever set s->rwstate incorrectly (so that we have
3755 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3756 * wbio *are* the same, this test works around that bug; so it
3757 * might be safer to keep it.
3758 */
26a7d938 3759 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3760 else if (BIO_should_io_special(bio)) {
3761 reason = BIO_get_retry_reason(bio);
3762 if (reason == BIO_RR_CONNECT)
26a7d938 3763 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3764 else if (reason == BIO_RR_ACCEPT)
26a7d938 3765 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3766 else
26a7d938 3767 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3768 }
8051ab2b 3769 }
0f113f3e 3770
8051ab2b 3771 if (SSL_want_write(s)) {
69687aa8 3772 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3773 bio = s->wbio;
3774 if (BIO_should_write(bio))
26a7d938 3775 return SSL_ERROR_WANT_WRITE;
8051ab2b 3776 else if (BIO_should_read(bio))
2e7dc7cd 3777 /*
8051ab2b 3778 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3779 */
26a7d938 3780 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3781 else if (BIO_should_io_special(bio)) {
3782 reason = BIO_get_retry_reason(bio);
3783 if (reason == BIO_RR_CONNECT)
26a7d938 3784 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3785 else if (reason == BIO_RR_ACCEPT)
26a7d938 3786 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3787 else
26a7d938 3788 return SSL_ERROR_SYSCALL;
0f113f3e 3789 }
07bbc92c 3790 }
6b1bb98f 3791 if (SSL_want_x509_lookup(s))
26a7d938 3792 return SSL_ERROR_WANT_X509_LOOKUP;
0c3eb279
DDO		 3793 if (SSL_want_retry_verify(s))
3794 return SSL_ERROR_WANT_RETRY_VERIFY;
6b1bb98f 3795 if (SSL_want_async(s))
8051ab2b 3796 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3797 if (SSL_want_async_job(s))
8051ab2b 3798 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3799 if (SSL_want_client_hello_cb(s))
3800 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3801
3802 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
555cbb32 3803 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3804 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3805
26a7d938 3806 return SSL_ERROR_SYSCALL;
0f113f3e 3807}
d02b48c6 3808
add2f5ca
MC		 3809static int ssl_do_handshake_intern(void *vargs)
3810{
3811 struct ssl_async_args *args;
3812 SSL *s;
3813
3814 args = (struct ssl_async_args *)vargs;
3815 s = args->s;
3816
3817 return s->handshake_func(s);
3818}
3819
4f43d0e7 3820int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3821{
3822 int ret = 1;
3823
3824 if (s->handshake_func == NULL) {
6849b73c 3825 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3826 return -1;
0f113f3e
MC		 3827 }
3828
3eaa4170 3829 ossl_statem_check_finish_init(s, -1);
49e7fe12 3830
c7f47786 3831 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 3832
3833 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3834 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3835 struct ssl_async_args args;
3836
3837 args.s = s;
3838
7fecbf6f 3839 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3840 } else {
3841 ret = s->handshake_func(s);
3842 }
0f113f3e 3843 }
add2f5ca 3844 return ret;
0f113f3e
MC		 3845}
3846
4f43d0e7 3847void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3848{
3849 s->server = 1;
3850 s->shutdown = 0;
fe3a3291 3851 ossl_statem_clear(s);
0f113f3e 3852 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3853 clear_ciphers(s);
0f113f3e 3854}
d02b48c6 3855
4f43d0e7 3856void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3857{
3858 s->server = 0;
3859 s->shutdown = 0;
fe3a3291 3860 ossl_statem_clear(s);
0f113f3e 3861 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3862 clear_ciphers(s);
0f113f3e 3863}
d02b48c6 3864
4f43d0e7 3865int ssl_undefined_function(SSL *s)
0f113f3e 3866{
6849b73c 3867 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3868 return 0;
0f113f3e 3869}
d02b48c6 3870
41a15c4f 3871int ssl_undefined_void_function(void)
0f113f3e 3872{
6849b73c 3873 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3874 return 0;
0f113f3e 3875}
41a15c4f 3876
0821bcd4 3877int ssl_undefined_const_function(const SSL *s)
0f113f3e 3878{
26a7d938 3879 return 0;
0f113f3e 3880}
0821bcd4 3881
2b8fa1d5 3882const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e 3883{
6849b73c 3884 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3885 return NULL;
0f113f3e 3886}
d02b48c6 3887
3eb2aff4 3888const char *ssl_protocol_to_string(int version)
7d650072 3889{
2abacef1
MC		 3890 switch(version)
3891 {
3892 case TLS1_3_VERSION:
582a17d6 3893 return "TLSv1.3";
2abacef1
MC		 3894
3895 case TLS1_2_VERSION:
7d650072 3896 return "TLSv1.2";
2abacef1
MC		 3897
3898 case TLS1_1_VERSION:
7d650072 3899 return "TLSv1.1";
2abacef1
MC		 3900
3901 case TLS1_VERSION:
ee3a6c64 3902 return "TLSv1";
2abacef1
MC		 3903
3904 case SSL3_VERSION:
7d650072 3905 return "SSLv3";
2abacef1
MC		 3906
3907 case DTLS1_BAD_VER:
7d650072 3908 return "DTLSv0.9";
2abacef1
MC		 3909
3910 case DTLS1_VERSION:
7d650072 3911 return "DTLSv1";
2abacef1
MC		 3912
3913 case DTLS1_2_VERSION:
7d650072 3914 return "DTLSv1.2";
2abacef1
MC		 3915
3916 default:
3917 return "unknown";
3918 }
0f113f3e 3919}
d02b48c6 3920
7d650072
KR		 3921const char *SSL_get_version(const SSL *s)
3922{
3eb2aff4 3923 return ssl_protocol_to_string(s->version);
7d650072
KR		 3924}
3925
98732979 3926static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 3927{
3928 STACK_OF(X509_NAME) *sk;
3929 X509_NAME *xn;
98732979
MC		 3930 int i;
3931
3932 if (src == NULL) {
3933 *dst = NULL;
3934 return 1;
3935 }
3936
3937 if ((sk = sk_X509_NAME_new_null()) == NULL)
3938 return 0;
3939 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3940 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3941 if (xn == NULL) {
3942 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3943 return 0;
3944 }
3945 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3946 X509_NAME_free(xn);
3947 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3948 return 0;
3949 }
3950 }
3951 *dst = sk;
3952
3953 return 1;
3954}
3955
3956SSL *SSL_dup(SSL *s)
3957{
0f113f3e
MC		 3958 SSL *ret;
3959 int i;
3960
919ba009
VD		 3961 /* If we're not quiescent, just up_ref! */
3962 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3963 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3964 return s;
3965 }
3966
3967 /*
3968 * Otherwise, copy configuration state, and session if set.
3969 */
0f113f3e 3970 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3971 return NULL;
0f113f3e 3972
0f113f3e 3973 if (s->session != NULL) {
919ba009
VD		 3974 /*
3975 * Arranges to share the same session via up_ref. This "copies"
3976 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3977 */
61986d32 3978 if (!SSL_copy_session_id(ret, s))
17dd65e6 3979 goto err;
0f113f3e
MC		 3980 } else {
3981 /*
3982 * No session has been established yet, so we have to expect that
3983 * s->cert or ret->cert will be changed later -- they should not both
3984 * point to the same object, and thus we can't use
3985 * SSL_copy_session_id.
3986 */
919ba009
VD		 3987 if (!SSL_set_ssl_method(ret, s->method))
3988 goto err;
0f113f3e
MC		 3989
3990 if (s->cert != NULL) {
e0e920b1 3991 ssl_cert_free(ret->cert);
0f113f3e
MC		 3992 ret->cert = ssl_cert_dup(s->cert);
3993 if (ret->cert == NULL)
3994 goto err;
3995 }
3996
348240c6
MC		 3997 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3998 (int)s->sid_ctx_length))
69f68237 3999 goto err;
0f113f3e
MC		 4000 }
4001
9f6b22b8
VD		 4002 if (!ssl_dane_dup(ret, s))
4003 goto err;
919ba009 4004 ret->version = s->version;
0f113f3e 4005 ret->options = s->options;
f12dd991
MC		 4006 ret->min_proto_version = s->min_proto_version;
4007 ret->max_proto_version = s->max_proto_version;
0f113f3e
MC		 4008 ret->mode = s->mode;
4009 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4010 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4011 ret->msg_callback = s->msg_callback;
4012 ret->msg_callback_arg = s->msg_callback_arg;
4013 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4014 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4015 ret->generate_session_id = s->generate_session_id;
4016
4017 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4018
0f113f3e
MC		 4019 /* copy app data, a little dangerous perhaps */
4020 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4021 goto err;
4022
0f113f3e 4023 ret->server = s->server;
919ba009
VD		 4024 if (s->handshake_func) {
4025 if (s->server)
4026 SSL_set_accept_state(ret);
4027 else
4028 SSL_set_connect_state(ret);
4029 }
0f113f3e 4030 ret->shutdown = s->shutdown;
0f113f3e
MC		 4031 ret->hit = s->hit;
4032
a974e64a
MC		 4033 ret->default_passwd_callback = s->default_passwd_callback;
4034 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4035
0f113f3e
MC		 4036 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4037
4038 /* dup the cipher_list and cipher_list_by_id stacks */
4039 if (s->cipher_list != NULL) {
4040 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4041 goto err;
4042 }
4043 if (s->cipher_list_by_id != NULL)
4044 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4045 == NULL)
4046 goto err;
4047
4048 /* Dup the client_CA list */
98732979
MC		 4049 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4050 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4051 goto err;
4052
66696478 4053 return ret;
0f113f3e 4054
0f113f3e 4055 err:
66696478
RS		 4056 SSL_free(ret);
4057 return NULL;
0f113f3e 4058}
d02b48c6 4059
4f43d0e7 4060void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 4061{
4062 if (s->enc_read_ctx != NULL) {
846ec07d 4063 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 4064 s->enc_read_ctx = NULL;
4065 }
4066 if (s->enc_write_ctx != NULL) {
846ec07d 4067 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 4068 s->enc_write_ctx = NULL;
4069 }
09b6c2ef 4070#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 4071 COMP_CTX_free(s->expand);
4072 s->expand = NULL;
4073 COMP_CTX_free(s->compress);
4074 s->compress = NULL;
0f113f3e
MC		 4075#endif
4076}
d02b48c6 4077
0821bcd4 4078X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 4079{
4080 if (s->cert != NULL)
26a7d938 4081 return s->cert->key->x509;
0f113f3e 4082 else
26a7d938 4083 return NULL;
0f113f3e 4084}
d02b48c6 4085
a25f9adc 4086EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 4087{
4088 if (s->cert != NULL)
26a7d938 4089 return s->cert->key->privatekey;
0f113f3e 4090 else
26a7d938 4091 return NULL;
0f113f3e 4092}
d02b48c6 4093
a25f9adc 4094X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 4095{
4096 if (ctx->cert != NULL)
4097 return ctx->cert->key->x509;
4098 else
4099 return NULL;
4100}
a25f9adc
DSH		 4101
4102EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4103{
4104 if (ctx->cert != NULL)
4105 return ctx->cert->key->privatekey;
4106 else
4107 return NULL;
4108}
a25f9adc 4109
babb3798 4110const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 4111{
4112 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 4113 return s->session->cipher;
4114 return NULL;
0f113f3e
MC		 4115}
4116
0aed6e44
BK		 4117const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4118{
555cbb32 4119 return s->s3.tmp.new_cipher;
0aed6e44
BK		 4120}
4121
3499327b 4122const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4123{
9a555706
RS		 4124#ifndef OPENSSL_NO_COMP
4125 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4126#else
4127 return NULL;
4128#endif
0f113f3e 4129}
377dcdba 4130
3499327b 4131const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4132{
9a555706
RS		 4133#ifndef OPENSSL_NO_COMP
4134 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4135#else
4136 return NULL;
0f113f3e 4137#endif
9a555706 4138}
0f113f3e 4139
46417569 4140int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 4141{
4142 BIO *bbio;
4143
2e7dc7cd
MC		 4144 if (s->bbio != NULL) {
4145 /* Already buffered. */
4146 return 1;
0f113f3e 4147 }
46417569 4148
2e7dc7cd
MC		 4149 bbio = BIO_new(BIO_f_buffer());
4150 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4151 BIO_free(bbio);
6849b73c 4152 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
46417569 4153 return 0;
0f113f3e 4154 }
2e7dc7cd
MC		 4155 s->bbio = bbio;
4156 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 4157
4158 return 1;
0f113f3e 4159}
413c4f45 4160
b77f3ed1 4161int ssl_free_wbio_buffer(SSL *s)
0f113f3e 4162{
62adbcee 4163 /* callers ensure s is never null */
0f113f3e 4164 if (s->bbio == NULL)
b77f3ed1 4165 return 1;
0f113f3e 4166
2e7dc7cd 4167 s->wbio = BIO_pop(s->wbio);
0f113f3e
MC		 4168 BIO_free(s->bbio);
4169 s->bbio = NULL;
b77f3ed1
MC		 4170
4171 return 1;
0f113f3e
MC		 4172}
4173
4174void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4175{
4176 ctx->quiet_shutdown = mode;
4177}
58964a49 4178
0821bcd4 4179int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4180{
26a7d938 4181 return ctx->quiet_shutdown;
0f113f3e 4182}
58964a49 4183
0f113f3e
MC		 4184void SSL_set_quiet_shutdown(SSL *s, int mode)
4185{
4186 s->quiet_shutdown = mode;
4187}
58964a49 4188
0821bcd4 4189int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4190{
26a7d938 4191 return s->quiet_shutdown;
0f113f3e 4192}
58964a49 4193
0f113f3e
MC		 4194void SSL_set_shutdown(SSL *s, int mode)
4195{
4196 s->shutdown = mode;
4197}
58964a49 4198
0821bcd4 4199int SSL_get_shutdown(const SSL *s)
0f113f3e 4200{
6546e9b2 4201 return s->shutdown;
0f113f3e 4202}
58964a49 4203
0821bcd4 4204int SSL_version(const SSL *s)
0f113f3e 4205{
6546e9b2
AG		 4206 return s->version;
4207}
4208
4209int SSL_client_version(const SSL *s)
4210{
4211 return s->client_version;
0f113f3e 4212}
58964a49 4213
0821bcd4 4214SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4215{
6546e9b2 4216 return ssl->ctx;
0f113f3e
MC		 4217}
4218
4219SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4220{
24a0d393 4221 CERT *new_cert;
0f113f3e
MC		 4222 if (ssl->ctx == ctx)
4223 return ssl->ctx;
0f113f3e 4224 if (ctx == NULL)
222da979 4225 ctx = ssl->session_ctx;
24a0d393
KR		 4226 new_cert = ssl_cert_dup(ctx->cert);
4227 if (new_cert == NULL) {
4228 return NULL;
0f113f3e 4229 }
21181889
MC		 4230
4231 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4232 ssl_cert_free(new_cert);
4233 return NULL;
4234 }
4235
24a0d393
KR		 4236 ssl_cert_free(ssl->cert);
4237 ssl->cert = new_cert;
0f113f3e
MC		 4238
4239 /*
4240 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4241 * so setter APIs must prevent invalid lengths from entering the system.
4242 */
380a522f
MC		 4243 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4244 return NULL;
0f113f3e
MC		 4245
4246 /*
4247 * If the session ID context matches that of the parent SSL_CTX,
4248 * inherit it from the new SSL_CTX as well. If however the context does
4249 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4250 * leave it unchanged.
4251 */
4252 if ((ssl->ctx != NULL) &&
4253 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4254 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4255 ssl->sid_ctx_length = ctx->sid_ctx_length;
4256 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4257 }
4258
16203f7b 4259 SSL_CTX_up_ref(ctx);
a230b26e 4260 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4261 ssl->ctx = ctx;
4262
16203f7b 4263 return ssl->ctx;
0f113f3e 4264}
ed3883d2 4265
4f43d0e7 4266int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4267{
d8652be0
MC		 4268 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4269 ctx->propq);
0f113f3e 4270}
58964a49 4271
d84a7b20
MC		 4272int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4273{
4274 X509_LOOKUP *lookup;
4275
4276 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4277 if (lookup == NULL)
4278 return 0;
6dcb100f
RL		 4279
4280 /* We ignore errors, in case the directory doesn't exist */
4281 ERR_set_mark();
4282
d84a7b20
MC		 4283 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4284
6dcb100f 4285 ERR_pop_to_mark();
d84a7b20
MC		 4286
4287 return 1;
4288}
4289
4290int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4291{
4292 X509_LOOKUP *lookup;
4293
4294 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4295 if (lookup == NULL)
4296 return 0;
4297
6dcb100f
RL		 4298 /* We ignore errors, in case the directory doesn't exist */
4299 ERR_set_mark();
4300
d8652be0
MC		 4301 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4302 ctx->propq);
d84a7b20 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
d8652be0 4320 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
6dcb100f
RL		 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{
d8652be0
MC		 4329 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4330 ctx->propq);
6dcb100f
RL		 4331}
4332
4333int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4334{
4335 return X509_STORE_load_path(ctx->cert_store, CApath);
4336}
4337
4338int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4339{
d8652be0
MC		 4340 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
4341 ctx->propq);
6dcb100f
RL		 4342}
4343
303c0028 4344int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4345 const char *CApath)
4346{
6dcb100f
RL		 4347 if (CAfile == NULL && CApath == NULL)
4348 return 0;
4349 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4350 return 0;
4351 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4352 return 0;
4353 return 1;
0f113f3e 4354}
58964a49 4355
45d87a1f 4356void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4357 void (*cb) (const SSL *ssl, int type, int val))
4358{
4359 ssl->info_callback = cb;
4360}
4361
4362/*
4363 * One compiler (Diab DCC) doesn't like argument names in returned function
4364 * pointer.
4365 */
4366void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4367 int /* type */ ,
4368 int /* val */ ) {
4369 return ssl->info_callback;
4370}
58964a49 4371
0f113f3e
MC		 4372void SSL_set_verify_result(SSL *ssl, long arg)
4373{
4374 ssl->verify_result = arg;
4375}
58964a49 4376
0821bcd4 4377long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4378{
26a7d938 4379 return ssl->verify_result;
0f113f3e
MC		 4380}
4381
d9f1c639 4382size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4383{
6b8f5d0d 4384 if (outlen == 0)
555cbb32
TS		 4385 return sizeof(ssl->s3.client_random);
4386 if (outlen > sizeof(ssl->s3.client_random))
4387 outlen = sizeof(ssl->s3.client_random);
4388 memcpy(out, ssl->s3.client_random, outlen);
d9f1c639 4389 return outlen;
858618e7
NM		 4390}
4391
d9f1c639 4392size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4393{
6b8f5d0d 4394 if (outlen == 0)
555cbb32
TS		 4395 return sizeof(ssl->s3.server_random);
4396 if (outlen > sizeof(ssl->s3.server_random))
4397 outlen = sizeof(ssl->s3.server_random);
4398 memcpy(out, ssl->s3.server_random, outlen);
d9f1c639 4399 return outlen;
858618e7
NM		 4400}
4401
d9f1c639 4402size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4403 unsigned char *out, size_t outlen)
858618e7 4404{
d9f1c639
MC		 4405 if (outlen == 0)
4406 return session->master_key_length;
8c1a5343 4407 if (outlen > session->master_key_length)
858618e7
NM		 4408 outlen = session->master_key_length;
4409 memcpy(out, session->master_key, outlen);
d9f1c639 4410 return outlen;
858618e7
NM		 4411}
4412
725b0f1e 4413int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4414 size_t len)
4415{
4416 if (len > sizeof(sess->master_key))
4417 return 0;
4418
4419 memcpy(sess->master_key, in, len);
4420 sess->master_key_length = len;
911d63f2
MC		 4421 return 1;
4422}
4423
4424
0f113f3e
MC		 4425int SSL_set_ex_data(SSL *s, int idx, void *arg)
4426{
26a7d938 4427 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4428}
4429
4430void *SSL_get_ex_data(const SSL *s, int idx)
4431{
26a7d938 4432 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4433}
4434
0f113f3e
MC		 4435int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4436{
26a7d938 4437 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4438}
4439
4440void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4441{
26a7d938 4442 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4443}
58964a49 4444
0821bcd4 4445X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4446{
26a7d938 4447 return ctx->cert_store;
0f113f3e 4448}
413c4f45 4449
0f113f3e
MC		 4450void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4451{
222561fe 4452 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4453 ctx->cert_store = store;
4454}
413c4f45 4455
b50052db
TS		 4456void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4457{
4458 if (store != NULL)
4459 X509_STORE_up_ref(store);
4460 SSL_CTX_set_cert_store(ctx, store);
4461}
4462
0821bcd4 4463int SSL_want(const SSL *s)
0f113f3e 4464{
26a7d938 4465 return s->rwstate;
0f113f3e 4466}
413c4f45 4467
ddac1974
NL		 4468#ifndef OPENSSL_NO_PSK
4469int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4470{
4471 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 4472 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4473 return 0;
4474 }
df6da24b 4475 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4476 if (identity_hint != NULL) {
7644a9ae 4477 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4478 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4479 return 0;
4480 } else
df6da24b 4481 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4482 return 1;
4483}
ddac1974
NL		 4484
4485int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4486{
4487 if (s == NULL)
4488 return 0;
4489
0f113f3e 4490 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 4491 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4492 return 0;
4493 }
df6da24b 4494 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4495 if (identity_hint != NULL) {
7644a9ae 4496 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4497 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4498 return 0;
4499 } else
df6da24b 4500 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4501 return 1;
4502}
ddac1974
NL		 4503
4504const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4505{
4506 if (s == NULL || s->session == NULL)
4507 return NULL;
26a7d938 4508 return s->session->psk_identity_hint;
0f113f3e 4509}
ddac1974
NL		 4510
4511const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4512{
4513 if (s == NULL || s->session == NULL)
4514 return NULL;
26a7d938 4515 return s->session->psk_identity;
0f113f3e 4516}
7806f3dd 4517
8cbfcc70 4518void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4519{
4520 s->psk_client_callback = cb;
4521}
7806f3dd 4522
8cbfcc70 4523void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4524{
4525 ctx->psk_client_callback = cb;
4526}
7806f3dd 4527
8cbfcc70 4528void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4529{
4530 s->psk_server_callback = cb;
4531}
7806f3dd 4532
8cbfcc70 4533void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4534{
4535 ctx->psk_server_callback = cb;
4536}
4537#endif
4538
f46184bd
MC		 4539void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4540{
4541 s->psk_find_session_cb = cb;
4542}
4543
4544void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4545 SSL_psk_find_session_cb_func cb)
4546{
4547 ctx->psk_find_session_cb = cb;
4548}
4549
4550void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4551{
4552 s->psk_use_session_cb = cb;
4553}
4554
4555void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4556 SSL_psk_use_session_cb_func cb)
4557{
4558 ctx->psk_use_session_cb = cb;
4559}
4560
0f113f3e
MC		 4561void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4562 void (*cb) (int write_p, int version,
4563 int content_type, const void *buf,
4564 size_t len, SSL *ssl, void *arg))
4565{
4566 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4567}
4568
4569void SSL_set_msg_callback(SSL *ssl,
4570 void (*cb) (int write_p, int version,
4571 int content_type, const void *buf,
4572 size_t len, SSL *ssl, void *arg))
4573{
4574 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4575}
a661b653 4576
7c2d4fee 4577void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4578 int (*cb) (SSL *ssl,
4579 int
4580 is_forward_secure))
4581{
4582 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4583 (void (*)(void))cb);
4584}
4585
7c2d4fee 4586void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4587 int (*cb) (SSL *ssl,
4588 int is_forward_secure))
4589{
4590 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4591 (void (*)(void))cb);
4592}
4593
c649d10d
TS		 4594void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4595 size_t (*cb) (SSL *ssl, int type,
4596 size_t len, void *arg))
4597{
4598 ctx->record_padding_cb = cb;
4599}
4600
4601void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4602{
4603 ctx->record_padding_arg = arg;
4604}
4605
3499327b 4606void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 4607{
4608 return ctx->record_padding_arg;
4609}
4610
4611int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4612{
4613 /* block size of 0 or 1 is basically no padding */
4614 if (block_size == 1)
4615 ctx->block_padding = 0;
4616 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4617 ctx->block_padding = block_size;
4618 else
4619 return 0;
4620 return 1;
4621}
4622
a6d36303 4623int SSL_set_record_padding_callback(SSL *ssl,
c649d10d
TS		 4624 size_t (*cb) (SSL *ssl, int type,
4625 size_t len, void *arg))
4626{
a6d36303
VF		 4627 BIO *b;
4628
4629 b = SSL_get_wbio(ssl);
4630 if (b == NULL || !BIO_get_ktls_send(b)) {
4631 ssl->record_padding_cb = cb;
4632 return 1;
4633 }
4634 return 0;
c649d10d
TS		 4635}
4636
4637void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4638{
4639 ssl->record_padding_arg = arg;
4640}
4641
3499327b 4642void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d
TS		 4643{
4644 return ssl->record_padding_arg;
4645}
4646
4647int SSL_set_block_padding(SSL *ssl, size_t block_size)
4648{
4649 /* block size of 0 or 1 is basically no padding */
4650 if (block_size == 1)
4651 ssl->block_padding = 0;
4652 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4653 ssl->block_padding = block_size;
4654 else
4655 return 0;
4656 return 1;
4657}
4658
9d0a8bb7
MC		 4659int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4660{
4661 s->num_tickets = num_tickets;
4662
4663 return 1;
4664}
4665
3499327b 4666size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7
MC		 4667{
4668 return s->num_tickets;
4669}
4670
4671int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4672{
4673 ctx->num_tickets = num_tickets;
4674
4675 return 1;
4676}
4677
3499327b 4678size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 4679{
4680 return ctx->num_tickets;
4681}
4682
0f113f3e
MC		 4683/*
4684 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4685 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4686 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4687 * Returns the newly allocated ctx;
8671b898 4688 */
b948e2c5 4689
0f113f3e 4690EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4691{
0f113f3e 4692 ssl_clear_hash_ctx(hash);
bfb0641f 4693 *hash = EVP_MD_CTX_new();
5f3d93e4 4694 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4695 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4696 *hash = NULL;
4697 return NULL;
4698 }
0f113f3e 4699 return *hash;
b948e2c5 4700}
0f113f3e
MC		 4701
4702void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4703{
4704
0d9824c1 4705 EVP_MD_CTX_free(*hash);
0f113f3e 4706 *hash = NULL;
b948e2c5 4707}
a661b653 4708
48fbcbac 4709/* Retrieve handshake hashes */
8c1a5343
MC		 4710int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4711 size_t *hashlen)
48fbcbac 4712{
6e59a892 4713 EVP_MD_CTX *ctx = NULL;
555cbb32 4714 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
8c1a5343
MC		 4715 int hashleni = EVP_MD_CTX_size(hdgst);
4716 int ret = 0;
4717
f63a17d6 4718 if (hashleni < 0 || (size_t)hashleni > outlen) {
c48ffbcc 4719 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
28ba2541 4720 goto err;
f63a17d6 4721 }
8c1a5343 4722
bfb0641f 4723 ctx = EVP_MD_CTX_new();
8c1a5343 4724 if (ctx == NULL)
6e59a892 4725 goto err;
8c1a5343 4726
6e59a892 4727 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6 4728 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
c48ffbcc 4729 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
8c1a5343 4730 goto err;
f63a17d6 4731 }
8c1a5343
MC		 4732
4733 *hashlen = hashleni;
4734
4735 ret = 1;
48fbcbac 4736 err:
bfb0641f 4737 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4738 return ret;
4739}
4740
c04b66b1 4741int SSL_session_reused(const SSL *s)
0f113f3e
MC		 4742{
4743 return s->hit;
4744}
08557cf2 4745
69443116 4746int SSL_is_server(const SSL *s)
0f113f3e
MC		 4747{
4748 return s->server;
4749}
87adf1fa 4750
00db8c60 4751#ifndef OPENSSL_NO_DEPRECATED_1_1_0
47153c72
RS		 4752void SSL_set_debug(SSL *s, int debug)
4753{
4754 /* Old function was do-nothing anyway... */
4755 (void)s;
4756 (void)debug;
4757}
4758#endif
4759
b362ccab 4760void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4761{
4762 s->cert->sec_level = level;
4763}
b362ccab
DSH		 4764
4765int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4766{
4767 return s->cert->sec_level;
4768}
b362ccab 4769
0f113f3e 4770void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4771 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4772 int op, int bits, int nid,
4773 void *other, void *ex))
0f113f3e
MC		 4774{
4775 s->cert->sec_cb = cb;
4776}
b362ccab 4777
a230b26e
EK		 4778int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4779 const SSL_CTX *ctx, int op,
4780 int bits, int nid, void *other,
4781 void *ex) {
0f113f3e
MC		 4782 return s->cert->sec_cb;
4783}
b362ccab
DSH		 4784
4785void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4786{
4787 s->cert->sec_ex = ex;
4788}
b362ccab
DSH		 4789
4790void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4791{
4792 return s->cert->sec_ex;
4793}
b362ccab
DSH		 4794
4795void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4796{
4797 ctx->cert->sec_level = level;
4798}
b362ccab
DSH		 4799
4800int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4801{
4802 return ctx->cert->sec_level;
4803}
b362ccab 4804
0f113f3e 4805void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4806 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4807 int op, int bits, int nid,
4808 void *other, void *ex))
0f113f3e
MC		 4809{
4810 ctx->cert->sec_cb = cb;
4811}
b362ccab 4812
e4646a89
KR		 4813int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4814 const SSL_CTX *ctx,
0f113f3e
MC		 4815 int op, int bits,
4816 int nid,
4817 void *other,
4818 void *ex) {
4819 return ctx->cert->sec_cb;
4820}
b362ccab
DSH		 4821
4822void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4823{
4824 ctx->cert->sec_ex = ex;
4825}
b362ccab
DSH		 4826
4827void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4828{
4829 return ctx->cert->sec_ex;
4830}
b362ccab 4831
8106cb8b
VD		 4832/*
4833 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4834 * can return unsigned long, instead of the generic long return value from the
4835 * control interface.
4836 */
4837unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4838{
4839 return ctx->options;
4840}
a230b26e
EK		 4841
4842unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4843{
4844 return s->options;
4845}
a230b26e 4846
8106cb8b
VD		 4847unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4848{
4849 return ctx->options |= op;
4850}
a230b26e 4851
8106cb8b
VD		 4852unsigned long SSL_set_options(SSL *s, unsigned long op)
4853{
4854 return s->options |= op;
4855}
a230b26e 4856
8106cb8b
VD		 4857unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4858{
4859 return ctx->options &= ~op;
4860}
a230b26e 4861
8106cb8b
VD		 4862unsigned long SSL_clear_options(SSL *s, unsigned long op)
4863{
4864 return s->options &= ~op;
4865}
4866
696178ed
DSH		 4867STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4868{
4869 return s->verified_chain;
4870}
4871
0f113f3e 4872IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4873
4874#ifndef OPENSSL_NO_CT
4875
4876/*
4877 * Moves SCTs from the |src| stack to the |dst| stack.
4878 * The source of each SCT will be set to |origin|.
4879 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4880 * the caller.
4881 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4882 */
a230b26e
EK		 4883static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4884 sct_source_t origin)
ed29e82a
RP		 4885{
4886 int scts_moved = 0;
4887 SCT *sct = NULL;
4888
4889 if (*dst == NULL) {
4890 *dst = sk_SCT_new_null();
4891 if (*dst == NULL) {
6849b73c 4892 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 4893 goto err;
4894 }
4895 }
4896
4897 while ((sct = sk_SCT_pop(src)) != NULL) {
4898 if (SCT_set_source(sct, origin) != 1)
4899 goto err;
4900
4901 if (sk_SCT_push(*dst, sct) <= 0)
4902 goto err;
4903 scts_moved += 1;
4904 }
4905
4906 return scts_moved;
a230b26e 4907 err:
ed29e82a 4908 if (sct != NULL)
a230b26e 4909 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4910 return -1;
ed29e82a
RP		 4911}
4912
4913/*
a230b26e 4914 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4915 * Returns the number of SCTs extracted.
a230b26e 4916 */
ed29e82a
RP		 4917static int ct_extract_tls_extension_scts(SSL *s)
4918{
4919 int scts_extracted = 0;
4920
aff8c126
RS		 4921 if (s->ext.scts != NULL) {
4922 const unsigned char *p = s->ext.scts;
4923 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4924
4925 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4926
4927 SCT_LIST_free(scts);
4928 }
4929
4930 return scts_extracted;
4931}
4932
4933/*
4934 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4935 * contains an SCT X509 extension. They will be stored in |s->scts|.
4936 * Returns:
4937 * - The number of SCTs extracted, assuming an OCSP response exists.
4938 * - 0 if no OCSP response exists or it contains no SCTs.
4939 * - A negative integer if an error occurs.
4940 */
4941static int ct_extract_ocsp_response_scts(SSL *s)
4942{
a230b26e 4943# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4944 int scts_extracted = 0;
4945 const unsigned char *p;
4946 OCSP_BASICRESP *br = NULL;
4947 OCSP_RESPONSE *rsp = NULL;
4948 STACK_OF(SCT) *scts = NULL;
4949 int i;
4950
aff8c126 4951 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4952 goto err;
4953
aff8c126
RS		 4954 p = s->ext.ocsp.resp;
4955 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4956 if (rsp == NULL)
4957 goto err;
4958
4959 br = OCSP_response_get1_basic(rsp);
4960 if (br == NULL)
4961 goto err;
4962
4963 for (i = 0; i < OCSP_resp_count(br); ++i) {
4964 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4965
4966 if (single == NULL)
4967 continue;
4968
a230b26e
EK		 4969 scts =
4970 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4971 scts_extracted =
4972 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4973 if (scts_extracted < 0)
4974 goto err;
4975 }
a230b26e 4976 err:
ed29e82a
RP		 4977 SCT_LIST_free(scts);
4978 OCSP_BASICRESP_free(br);
4979 OCSP_RESPONSE_free(rsp);
4980 return scts_extracted;
a230b26e 4981# else
3e41ac35
MC		 4982 /* Behave as if no OCSP response exists */
4983 return 0;
a230b26e 4984# endif
ed29e82a
RP		 4985}
4986
4987/*
4988 * Attempts to extract SCTs from the peer certificate.
4989 * Return the number of SCTs extracted, or a negative integer if an error
4990 * occurs.
4991 */
4992static int ct_extract_x509v3_extension_scts(SSL *s)
4993{
4994 int scts_extracted = 0;
3f3c7d26 4995 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4996
4997 if (cert != NULL) {
4998 STACK_OF(SCT) *scts =
4999 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5000
5001 scts_extracted =
5002 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5003
5004 SCT_LIST_free(scts);
5005 }
5006
5007 return scts_extracted;
5008}
5009
5010/*
5011 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5012 * response (if it exists) and X509v3 extensions in the certificate.
5013 * Returns NULL if an error occurs.
5014 */
5015const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5016{
5017 if (!s->scts_parsed) {
5018 if (ct_extract_tls_extension_scts(s) < 0 ||
5019 ct_extract_ocsp_response_scts(s) < 0 ||
5020 ct_extract_x509v3_extension_scts(s) < 0)
5021 goto err;
5022
5023 s->scts_parsed = 1;
5024 }
5025 return s->scts;
a230b26e 5026 err:
ed29e82a
RP		 5027 return NULL;
5028}
5029
a230b26e 5030static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 5031 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 5032{
43341433
VD		 5033 return 1;
5034}
5035
a230b26e 5036static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 5037 const STACK_OF(SCT) *scts, void *unused_arg)
5038{
5039 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5040 int i;
ed29e82a 5041
43341433
VD		 5042 for (i = 0; i < count; ++i) {
5043 SCT *sct = sk_SCT_value(scts, i);
5044 int status = SCT_get_validation_status(sct);
5045
5046 if (status == SCT_VALIDATION_STATUS_VALID)
5047 return 1;
5048 }
6849b73c 5049 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
43341433
VD		 5050 return 0;
5051}
5052
5053int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5054 void *arg)
5055{
ed29e82a
RP		 5056 /*
5057 * Since code exists that uses the custom extension handler for CT, look
5058 * for this and throw an error if they have already registered to use CT.
5059 */
5060 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 5061 TLSEXT_TYPE_signed_certificate_timestamp))
5062 {
6849b73c 5063 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5064 return 0;
ed29e82a
RP		 5065 }
5066
ed29e82a 5067 if (callback != NULL) {
a230b26e
EK		 5068 /*
5069 * If we are validating CT, then we MUST accept SCTs served via OCSP
5070 */
ed29e82a 5071 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 5072 return 0;
ed29e82a
RP		 5073 }
5074
43341433
VD		 5075 s->ct_validation_callback = callback;
5076 s->ct_validation_callback_arg = arg;
5077
5078 return 1;
ed29e82a
RP		 5079}
5080
43341433 5081int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 5082 ssl_ct_validation_cb callback, void *arg)
ed29e82a 5083{
ed29e82a
RP		 5084 /*
5085 * Since code exists that uses the custom extension handler for CT, look for
5086 * this and throw an error if they have already registered to use CT.
5087 */
5088 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 5089 TLSEXT_TYPE_signed_certificate_timestamp))
5090 {
6849b73c 5091 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5092 return 0;
ed29e82a
RP		 5093 }
5094
5095 ctx->ct_validation_callback = callback;
5096 ctx->ct_validation_callback_arg = arg;
43341433 5097 return 1;
ed29e82a
RP		 5098}
5099
43341433 5100int SSL_ct_is_enabled(const SSL *s)
ed29e82a 5101{
43341433 5102 return s->ct_validation_callback != NULL;
ed29e82a
RP		 5103}
5104
43341433 5105int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 5106{
43341433 5107 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 5108}
5109
4d482ee2 5110int ssl_validate_ct(SSL *s)
ed29e82a
RP		 5111{
5112 int ret = 0;
3f3c7d26 5113 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 5114 X509 *issuer;
b9aec69a 5115 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 5116 CT_POLICY_EVAL_CTX *ctx = NULL;
5117 const STACK_OF(SCT) *scts;
5118
43341433
VD		 5119 /*
5120 * If no callback is set, the peer is anonymous, or its chain is invalid,
5121 * skip SCT validation - just return success. Applications that continue
5122 * handshakes without certificates, with unverified chains, or pinned leaf
5123 * certificates are outside the scope of the WebPKI and CT.
5124 *
5125 * The above exclusions notwithstanding the vast majority of peers will
5126 * have rather ordinary certificate chains validated by typical
5127 * applications that perform certificate verification and therefore will
5128 * process SCTs when enabled.
5129 */
5130 if (s->ct_validation_callback == NULL || cert == NULL ||
5131 s->verify_result != X509_V_OK ||
a230b26e 5132 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 5133 return 1;
5134
43341433
VD		 5135 /*
5136 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5137 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5138 */
5139 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5140 switch (dane->mtlsa->usage) {
5141 case DANETLS_USAGE_DANE_TA:
5142 case DANETLS_USAGE_DANE_EE:
5143 return 1;
5144 }
ed29e82a
RP		 5145 }
5146
d8652be0 5147 ctx = CT_POLICY_EVAL_CTX_new_ex(s->ctx->libctx, s->ctx->propq);
ed29e82a 5148 if (ctx == NULL) {
c48ffbcc 5149 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 5150 goto end;
5151 }
5152
43341433 5153 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 5154 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5155 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5156 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 5157 CT_POLICY_EVAL_CTX_set_time(
5158 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 5159
5160 scts = SSL_get0_peer_scts(s);
5161
43341433
VD		 5162 /*
5163 * This function returns success (> 0) only when all the SCTs are valid, 0
5164 * when some are invalid, and < 0 on various internal errors (out of
5165 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5166 * reason to abort the handshake, that decision is up to the callback.
5167 * Therefore, we error out only in the unexpected case that the return
5168 * value is negative.
5169 *
5170 * XXX: One might well argue that the return value of this function is an
f430ba31 5171 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 5172 * status of each of the provided SCTs. So long as it correctly separates
5173 * the wheat from the chaff it should return success. Failure in this case
5174 * ought to correspond to an inability to carry out its duties.
5175 */
5176 if (SCT_LIST_validate(scts, ctx) < 0) {
c48ffbcc 5177 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 5178 goto end;
5179 }
5180
5181 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5182 if (ret < 0)
a230b26e 5183 ret = 0; /* This function returns 0 on failure */
f63a17d6 5184 if (!ret)
c48ffbcc 5185 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
ed29e82a 5186
a230b26e 5187 end:
ed29e82a 5188 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 5189 /*
5190 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5191 * failure return code here. Also the application may wish the complete
5192 * the handshake, and then disconnect cleanly at a higher layer, after
5193 * checking the verification status of the completed connection.
5194 *
5195 * We therefore force a certificate verification failure which will be
5196 * visible via SSL_get_verify_result() and cached as part of any resumed
5197 * session.
5198 *
5199 * Note: the permissive callback is for information gathering only, always
5200 * returns success, and does not affect verification status. Only the
5201 * strict callback or a custom application-specified callback can trigger
5202 * connection failure or record a verification error.
5203 */
5204 if (ret <= 0)
5205 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 5206 return ret;
5207}
5208
43341433
VD		 5209int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5210{
5211 switch (validation_mode) {
5212 default:
6849b73c 5213 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 5214 return 0;
5215 case SSL_CT_VALIDATION_PERMISSIVE:
5216 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5217 case SSL_CT_VALIDATION_STRICT:
5218 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5219 }
5220}
5221
5222int SSL_enable_ct(SSL *s, int validation_mode)
5223{
5224 switch (validation_mode) {
5225 default:
6849b73c 5226 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 5227 return 0;
5228 case SSL_CT_VALIDATION_PERMISSIVE:
5229 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5230 case SSL_CT_VALIDATION_STRICT:
5231 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5232 }
5233}
5234
ed29e82a
RP		 5235int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5236{
328f36c5 5237 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 5238}
5239
5240int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5241{
5242 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5243}
5244
a230b26e 5245void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 5246{
5247 CTLOG_STORE_free(ctx->ctlog_store);
5248 ctx->ctlog_store = logs;
5249}
5250
5251const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5252{
5253 return ctx->ctlog_store;
5254}
5255
6b1bb98f
BK		 5256#endif /* OPENSSL_NO_CT */
5257
a9c0d8be
DB		 5258void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5259 void *arg)
6b1bb98f 5260{
a9c0d8be
DB		 5261 c->client_hello_cb = cb;
5262 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 5263}
5264
a9c0d8be 5265int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 5266{
5267 if (s->clienthello == NULL)
5268 return 0;
5269 return s->clienthello->isv2;
5270}
5271
a9c0d8be 5272unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 5273{
5274 if (s->clienthello == NULL)
5275 return 0;
5276 return s->clienthello->legacy_version;
5277}
5278
a9c0d8be 5279size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5280{
5281 if (s->clienthello == NULL)
5282 return 0;
5283 if (out != NULL)
5284 *out = s->clienthello->random;
5285 return SSL3_RANDOM_SIZE;
5286}
5287
a9c0d8be 5288size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5289{
5290 if (s->clienthello == NULL)
5291 return 0;
5292 if (out != NULL)
5293 *out = s->clienthello->session_id;
5294 return s->clienthello->session_id_len;
5295}
5296
a9c0d8be 5297size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5298{
5299 if (s->clienthello == NULL)
5300 return 0;
5301 if (out != NULL)
5302 *out = PACKET_data(&s->clienthello->ciphersuites);
5303 return PACKET_remaining(&s->clienthello->ciphersuites);
5304}
5305
a9c0d8be 5306size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5307{
5308 if (s->clienthello == NULL)
5309 return 0;
5310 if (out != NULL)
5311 *out = s->clienthello->compressions;
5312 return s->clienthello->compressions_len;
5313}
5314
a9c0d8be 5315int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5316{
5317 RAW_EXTENSION *ext;
5318 int *present;
5319 size_t num = 0, i;
5320
5321 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5322 return 0;
5323 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5324 ext = s->clienthello->pre_proc_exts + i;
5325 if (ext->present)
5326 num++;
5327 }
6fda11ae 5328 if (num == 0) {
5329 *out = NULL;
5330 *outlen = 0;
5331 return 1;
5332 }
cdb10bae 5333 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6849b73c 5334 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
193b5d76 5335 return 0;
cdb10bae 5336 }
193b5d76
BK		 5337 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5338 ext = s->clienthello->pre_proc_exts + i;
5339 if (ext->present) {
5340 if (ext->received_order >= num)
5341 goto err;
5342 present[ext->received_order] = ext->type;
5343 }
5344 }
5345 *out = present;
5346 *outlen = num;
5347 return 1;
5348 err:
5349 OPENSSL_free(present);
5350 return 0;
5351}
5352
a9c0d8be 5353int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5354 size_t *outlen)
5355{
5356 size_t i;
5357 RAW_EXTENSION *r;
5358
5359 if (s->clienthello == NULL)
5360 return 0;
5361 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5362 r = s->clienthello->pre_proc_exts + i;
5363 if (r->present && r->type == type) {
5364 if (out != NULL)
5365 *out = PACKET_data(&r->data);
5366 if (outlen != NULL)
5367 *outlen = PACKET_remaining(&r->data);
5368 return 1;
5369 }
5370 }
5371 return 0;
5372}
2faa1b48 5373
a58eb06d
TS		 5374int SSL_free_buffers(SSL *ssl)
5375{
5376 RECORD_LAYER *rl = &ssl->rlayer;
5377
5378 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5379 return 0;
5380
5381 RECORD_LAYER_release(rl);
5382 return 1;
5383}
5384
5385int SSL_alloc_buffers(SSL *ssl)
5386{
5387 return ssl3_setup_buffers(ssl);
5388}
5389
2faa1b48
CB		 5390void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5391{
5392 ctx->keylog_callback = cb;
5393}
5394
5395SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5396{
5397 return ctx->keylog_callback;
5398}
5399
5400static int nss_keylog_int(const char *prefix,
5401 SSL *ssl,
5402 const uint8_t *parameter_1,
5403 size_t parameter_1_len,
5404 const uint8_t *parameter_2,
5405 size_t parameter_2_len)
5406{
5407 char *out = NULL;
5408 char *cursor = NULL;
5409 size_t out_len = 0;
5410 size_t i;
5411 size_t prefix_len;
5412
20870286
P		 5413 if (ssl->ctx->keylog_callback == NULL)
5414 return 1;
2faa1b48
CB		 5415
5416 /*
5417 * Our output buffer will contain the following strings, rendered with
5418 * space characters in between, terminated by a NULL character: first the
5419 * prefix, then the first parameter, then the second parameter. The
5420 * meaning of each parameter depends on the specific key material being
5421 * logged. Note that the first and second parameters are encoded in
5422 * hexadecimal, so we need a buffer that is twice their lengths.
5423 */
5424 prefix_len = strlen(prefix);
e931f370 5425 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
2faa1b48 5426 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
c48ffbcc 5427 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5428 return 0;
5429 }
5430
5431 strcpy(cursor, prefix);
5432 cursor += prefix_len;
5433 *cursor++ = ' ';
5434
5435 for (i = 0; i < parameter_1_len; i++) {
5436 sprintf(cursor, "%02x", parameter_1[i]);
5437 cursor += 2;
5438 }
5439 *cursor++ = ' ';
5440
5441 for (i = 0; i < parameter_2_len; i++) {
5442 sprintf(cursor, "%02x", parameter_2[i]);
5443 cursor += 2;
5444 }
5445 *cursor = '\0';
5446
5447 ssl->ctx->keylog_callback(ssl, (const char *)out);
e931f370 5448 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 5449 return 1;
5450
5451}
5452
5453int ssl_log_rsa_client_key_exchange(SSL *ssl,
5454 const uint8_t *encrypted_premaster,
5455 size_t encrypted_premaster_len,
5456 const uint8_t *premaster,
5457 size_t premaster_len)
5458{
5459 if (encrypted_premaster_len < 8) {
c48ffbcc 5460 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5461 return 0;
5462 }
5463
f0deb4d3 5464 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5465 return nss_keylog_int("RSA",
5466 ssl,
5467 encrypted_premaster,
f0deb4d3 5468 8,
2faa1b48
CB		 5469 premaster,
5470 premaster_len);
5471}
5472
2c7bd692
CB		 5473int ssl_log_secret(SSL *ssl,
5474 const char *label,
5475 const uint8_t *secret,
5476 size_t secret_len)
2faa1b48 5477{
2c7bd692 5478 return nss_keylog_int(label,
2faa1b48 5479 ssl,
555cbb32 5480 ssl->s3.client_random,
2c7bd692
CB		 5481 SSL3_RANDOM_SIZE,
5482 secret,
5483 secret_len);
2faa1b48
CB		 5484}
5485
ccb8e6e0
BK		 5486#define SSLV2_CIPHER_LEN 3
5487
f63a17d6 5488int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5489{
ccb8e6e0 5490 int n;
ccb8e6e0
BK		 5491
5492 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5493
5494 if (PACKET_remaining(cipher_suites) == 0) {
c48ffbcc 5495 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5496 return 0;
ccb8e6e0
BK		 5497 }
5498
5499 if (PACKET_remaining(cipher_suites) % n != 0) {
c48ffbcc 5500 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5501 return 0;
ccb8e6e0
BK		 5502 }
5503
555cbb32
TS		 5504 OPENSSL_free(s->s3.tmp.ciphers_raw);
5505 s->s3.tmp.ciphers_raw = NULL;
5506 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5507
5508 if (sslv2format) {
5509 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5510 PACKET sslv2ciphers = *cipher_suites;
5511 unsigned int leadbyte;
5512 unsigned char *raw;
5513
5514 /*
5515 * We store the raw ciphers list in SSLv3+ format so we need to do some
5516 * preprocessing to convert the list first. If there are any SSLv2 only
5517 * ciphersuites with a non-zero leading byte then we are going to
5518 * slightly over allocate because we won't store those. But that isn't a
5519 * problem.
5520 */
5521 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 5522 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 5523 if (raw == NULL) {
c48ffbcc 5524 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 5525 return 0;
ccb8e6e0 5526 }
555cbb32 5527 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5528 PACKET_remaining(&sslv2ciphers) > 0;
5529 raw += TLS_CIPHER_LEN) {
5530 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5531 || (leadbyte == 0
5532 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5533 TLS_CIPHER_LEN))
5534 || (leadbyte != 0
5535 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
c48ffbcc 5536 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
555cbb32
TS		 5537 OPENSSL_free(s->s3.tmp.ciphers_raw);
5538 s->s3.tmp.ciphers_raw = NULL;
5539 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 5540 return 0;
ccb8e6e0
BK		 5541 }
5542 if (leadbyte == 0)
555cbb32 5543 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 5544 }
555cbb32
TS		 5545 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5546 &s->s3.tmp.ciphers_rawlen)) {
c48ffbcc 5547 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
f63a17d6 5548 return 0;
ccb8e6e0 5549 }
90134d98 5550 return 1;
90134d98
BK		 5551}
5552
5553int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5554 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5555 STACK_OF(SSL_CIPHER) **scsvs)
5556{
90134d98
BK		 5557 PACKET pkt;
5558
5559 if (!PACKET_buf_init(&pkt, bytes, len))
5560 return 0;
f63a17d6 5561 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5562}
5563
5564int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5565 STACK_OF(SSL_CIPHER) **skp,
5566 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5567 int sslv2format, int fatal)
90134d98
BK		 5568{
5569 const SSL_CIPHER *c;
5570 STACK_OF(SSL_CIPHER) *sk = NULL;
5571 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5572 int n;
5573 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5574 unsigned char cipher[SSLV2_CIPHER_LEN];
5575
5576 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5577
5578 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6 5579 if (fatal)
c48ffbcc 5580 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
f63a17d6 5581 else
6849b73c 5582 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5583 return 0;
5584 }
5585
5586 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5587 if (fatal)
c48ffbcc 5588 SSLfatal(s, SSL_AD_DECODE_ERROR,
f63a17d6
MC		 5589 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5590 else
6849b73c 5591 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5592 return 0;
5593 }
5594
5595 sk = sk_SSL_CIPHER_new_null();
5596 scsvs = sk_SSL_CIPHER_new_null();
5597 if (sk == NULL || scsvs == NULL) {
f63a17d6 5598 if (fatal)
c48ffbcc 5599 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 5600 else
6849b73c 5601 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5602 goto err;
5603 }
ccb8e6e0
BK		 5604
5605 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5606 /*
5607 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5608 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5609 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5610 */
5611 if (sslv2format && cipher[0] != '\0')
5612 continue;
5613
ccb8e6e0
BK		 5614 /* For SSLv2-compat, ignore leading 0-byte. */
5615 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5616 if (c != NULL) {
90134d98
BK		 5617 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5618 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6 5619 if (fatal)
c48ffbcc 5620 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 5621 else
6849b73c 5622 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5623 goto err;
5624 }
5625 }
5626 }
5627 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6 5628 if (fatal)
c48ffbcc 5629 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
f63a17d6 5630 else
6849b73c 5631 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5632 goto err;
5633 }
5634
90134d98
BK		 5635 if (skp != NULL)
5636 *skp = sk;
5637 else
5638 sk_SSL_CIPHER_free(sk);
5639 if (scsvs_out != NULL)
5640 *scsvs_out = scsvs;
5641 else
5642 sk_SSL_CIPHER_free(scsvs);
5643 return 1;
ccb8e6e0
BK		 5644 err:
5645 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5646 sk_SSL_CIPHER_free(scsvs);
5647 return 0;
ccb8e6e0 5648}
3fc8d856
MC		 5649
5650int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5651{
5652 ctx->max_early_data = max_early_data;
5653
5654 return 1;
5655}
5656
46dcb945 5657uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5658{
5659 return ctx->max_early_data;
5660}
5661
5662int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5663{
5664 s->max_early_data = max_early_data;
5665
5666 return 1;
5667}
5668
a8e75d56 5669uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5670{
5671 return s->max_early_data;
5672}
ae3947de 5673
4e8548e8
MC		 5674int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5675{
5676 ctx->recv_max_early_data = recv_max_early_data;
5677
5678 return 1;
5679}
5680
5681uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5682{
5683 return ctx->recv_max_early_data;
5684}
5685
5686int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5687{
5688 s->recv_max_early_data = recv_max_early_data;
5689
5690 return 1;
5691}
5692
5693uint32_t SSL_get_recv_max_early_data(const SSL *s)
5694{
5695 return s->recv_max_early_data;
5696}
5697
cf72c757
F		 5698__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5699{
5700 /* Return any active Max Fragment Len extension */
5701 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5702 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5703
5704 /* return current SSL connection setting */
5705 return ssl->max_send_fragment;
5706}
5707
5708__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5709{
5710 /* Return a value regarding an active Max Fragment Len extension */
5711 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5712 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5713 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5714
5715 /* else limit |split_send_fragment| to current |max_send_fragment| */
5716 if (ssl->split_send_fragment > ssl->max_send_fragment)
5717 return ssl->max_send_fragment;
5718
5719 /* return current SSL connection setting */
5720 return ssl->split_send_fragment;
5721}
042c5753
MC		 5722
5723int SSL_stateless(SSL *s)
5724{
5725 int ret;
5726
5727 /* Ensure there is no state left over from a previous invocation */
5728 if (!SSL_clear(s))
d6bb50a5 5729 return 0;
042c5753
MC		 5730
5731 ERR_clear_error();
5732
555cbb32 5733 s->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 5734 ret = SSL_accept(s);
555cbb32 5735 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 5736
d6bb50a5 5737 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5738 return 1;
5739
e440f513
MC		 5740 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5741 return 0;
5742
5743 return -1;
042c5753 5744}
9d75dce3 5745
e97be718
MC		 5746void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5747{
5748 ctx->pha_enabled = val;
5749}
5750
32097b33 5751void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 5752{
32097b33 5753 ssl->pha_enabled = val;
9d75dce3
TS		 5754}
5755
5756int SSL_verify_client_post_handshake(SSL *ssl)
5757{
5758 if (!SSL_IS_TLS13(ssl)) {
6849b73c 5759 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
9d75dce3
TS		 5760 return 0;
5761 }
5762 if (!ssl->server) {
6849b73c 5763 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
9d75dce3
TS		 5764 return 0;
5765 }
5766
5767 if (!SSL_is_init_finished(ssl)) {
6849b73c 5768 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
9d75dce3
TS		 5769 return 0;
5770 }
5771
5772 switch (ssl->post_handshake_auth) {
5773 case SSL_PHA_NONE:
6849b73c 5774 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
9d75dce3
TS		 5775 return 0;
5776 default:
5777 case SSL_PHA_EXT_SENT:
6849b73c 5778 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
9d75dce3
TS		 5779 return 0;
5780 case SSL_PHA_EXT_RECEIVED:
5781 break;
5782 case SSL_PHA_REQUEST_PENDING:
6849b73c 5783 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
9d75dce3
TS		 5784 return 0;
5785 case SSL_PHA_REQUESTED:
6849b73c 5786 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
9d75dce3
TS		 5787 return 0;
5788 }
5789
5790 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5791
5792 /* checks verify_mode and algorithm_auth */
5793 if (!send_certificate_request(ssl)) {
5794 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6849b73c 5795 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
9d75dce3
TS		 5796 return 0;
5797 }
5798
5799 ossl_statem_set_in_init(ssl, 1);
5800 return 1;
5801}
df0fed9a
TS		 5802
5803int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5804 SSL_CTX_generate_session_ticket_fn gen_cb,
5805 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5806 void *arg)
5807{
5808 ctx->generate_ticket_cb = gen_cb;
5809 ctx->decrypt_ticket_cb = dec_cb;
5810 ctx->ticket_cb_data = arg;
5811 return 1;
5812}
c9598459
MC		 5813
5814void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5815 SSL_allow_early_data_cb_fn cb,
5816 void *arg)
5817{
5818 ctx->allow_early_data_cb = cb;
5819 ctx->allow_early_data_cb_data = arg;
5820}
5821
5822void SSL_set_allow_early_data_cb(SSL *s,
5823 SSL_allow_early_data_cb_fn cb,
5824 void *arg)
5825{
5826 s->allow_early_data_cb = cb;
5827 s->allow_early_data_cb_data = arg;
5828}
c8f6c28a 5829
b4250010 5830const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 5831 int nid,
5832 const char *properties)
5833{
301fcb28 5834 const EVP_CIPHER *ciph;
5fcb97c6 5835
301fcb28
MC		 5836 ciph = tls_get_cipher_from_engine(nid);
5837 if (ciph != NULL)
5838 return ciph;
0618b62c 5839
c8f6c28a 5840 /*
301fcb28
MC		 5841 * If there is no engine cipher then we do an explicit fetch. This may fail
5842 * and that could be ok
c8f6c28a 5843 */
5fcb97c6
MC		 5844 ERR_set_mark();
5845 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5846 ERR_pop_to_mark();
5847 return ciph;
c8f6c28a
MC		 5848}
5849
5850
5851int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5852{
5853 /* Don't up-ref an implicit EVP_CIPHER */
5854 if (EVP_CIPHER_provider(cipher) == NULL)
5855 return 1;
5856
5857 /*
5858 * The cipher was explicitly fetched and therefore it is safe to cast
5859 * away the const
5860 */
5861 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5862}
5863
5864void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5865{
5866 if (cipher == NULL)
5867 return;
5868
5869 if (EVP_CIPHER_provider(cipher) != NULL) {
5870 /*
5871 * The cipher was explicitly fetched and therefore it is safe to cast
5872 * away the const
5873 */
5874 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5875 }
5876}
5877
b4250010 5878const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 5879 int nid,
5880 const char *properties)
5881{
301fcb28 5882 const EVP_MD *md;
5fcb97c6 5883
301fcb28
MC		 5884 md = tls_get_digest_from_engine(nid);
5885 if (md != NULL)
5886 return md;
c8f6c28a
MC		 5887
5888 /* Otherwise we do an explicit fetch */
5fcb97c6
MC		 5889 ERR_set_mark();
5890 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5891 ERR_pop_to_mark();
5892 return md;
c8f6c28a
MC		 5893}
5894
5895int ssl_evp_md_up_ref(const EVP_MD *md)
5896{
5897 /* Don't up-ref an implicit EVP_MD */
5898 if (EVP_MD_provider(md) == NULL)
5899 return 1;
5900
5901 /*
5902 * The digest was explicitly fetched and therefore it is safe to cast
5903 * away the const
5904 */
5905 return EVP_MD_up_ref((EVP_MD *)md);
5906}
5907
5908void ssl_evp_md_free(const EVP_MD *md)
5909{
5910 if (md == NULL)
5911 return;
5912
5913 if (EVP_MD_provider(md) != NULL) {
5914 /*
5915 * The digest was explicitly fetched and therefore it is safe to cast
5916 * away the const
5917 */
5918 EVP_MD_free((EVP_MD *)md);
5919 }
5920}
163f6dc1
MC		 5921
5922int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
5923{
5924 if (!ssl_security(s, SSL_SECOP_TMP_DH,
5925 EVP_PKEY_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 5926 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 5927 EVP_PKEY_free(dhpkey);
5928 return 0;
5929 }
5930 EVP_PKEY_free(s->cert->dh_tmp);
5931 s->cert->dh_tmp = dhpkey;
5932 return 1;
5933}
5934
5935int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
5936{
5937 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
5938 EVP_PKEY_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 5939 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 5940 EVP_PKEY_free(dhpkey);
5941 return 0;
5942 }
5943 EVP_PKEY_free(ctx->cert->dh_tmp);
5944 ctx->cert->dh_tmp = dhpkey;
5945 return 1;
5946}
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