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[thirdparty/openssl.git] / ssl / ssl_lib.c
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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);
39a14059
MC		 775 if (!s->ext.ecpointformats) {
776 s->ext.ecpointformats_len = 0;
0f113f3e 777 goto err;
39a14059 778 }
aff8c126
RS		 779 s->ext.ecpointformats_len =
780 ctx->ext.ecpointformats_len;
781 }
782 if (ctx->ext.supportedgroups) {
783 s->ext.supportedgroups =
784 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 785 ctx->ext.supportedgroups_len
b92d7b62 786 * sizeof(*ctx->ext.supportedgroups));
39a14059
MC		 787 if (!s->ext.supportedgroups) {
788 s->ext.supportedgroups_len = 0;
0f113f3e 789 goto err;
39a14059 790 }
aff8c126 791 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 792 }
dbc6268f 793
a230b26e 794#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 795 s->ext.npn = NULL;
a230b26e 796#endif
6f017a8f 797
aff8c126
RS		 798 if (s->ctx->ext.alpn) {
799 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
39a14059
MC		 800 if (s->ext.alpn == NULL) {
801 s->ext.alpn_len = 0;
0f113f3e 802 goto err;
39a14059 803 }
aff8c126
RS		 804 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
805 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 806 }
d02b48c6 807
696178ed 808 s->verified_chain = NULL;
0f113f3e 809 s->verify_result = X509_V_OK;
d02b48c6 810
a974e64a
MC		 811 s->default_passwd_callback = ctx->default_passwd_callback;
812 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
813
0f113f3e 814 s->method = ctx->method;
d02b48c6 815
44c04a2e
MC		 816 s->key_update = SSL_KEY_UPDATE_NONE;
817
c9598459
MC		 818 s->allow_early_data_cb = ctx->allow_early_data_cb;
819 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
820
0f113f3e
MC		 821 if (!s->method->ssl_new(s))
822 goto err;
d02b48c6 823
0f113f3e 824 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 825
61986d32 826 if (!SSL_clear(s))
69f68237 827 goto err;
58964a49 828
25a807bc
F		 829 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
830 goto err;
58964a49 831
ddac1974 832#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 833 s->psk_client_callback = ctx->psk_client_callback;
834 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 835#endif
f46184bd
MC		 836 s->psk_find_session_cb = ctx->psk_find_session_cb;
837 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 838
9f5a87fd
PY		 839 s->async_cb = ctx->async_cb;
840 s->async_cb_arg = ctx->async_cb_arg;
841
07bbc92c
MC		 842 s->job = NULL;
843
ed29e82a
RP		 844#ifndef OPENSSL_NO_CT
845 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 846 ctx->ct_validation_callback_arg))
ed29e82a
RP		 847 goto err;
848#endif
849
16203f7b 850 return s;
0f113f3e 851 err:
62adbcee 852 SSL_free(s);
6849b73c 853 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
16203f7b 854 return NULL;
0f113f3e 855}
d02b48c6 856
e417070c
RS		 857int SSL_is_dtls(const SSL *s)
858{
859 return SSL_IS_DTLS(s) ? 1 : 0;
860}
861
c5ebfcab 862int SSL_up_ref(SSL *s)
a18a31e4 863{
16203f7b 864 int i;
c5ebfcab 865
2f545ae4 866 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 867 return 0;
868
869 REF_PRINT_COUNT("SSL", s);
870 REF_ASSERT_ISNT(i < 2);
871 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 872}
873
0f113f3e
MC		 874int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
875 unsigned int sid_ctx_len)
876{
fe9edc9d 877 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 878 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 879 return 0;
880 }
881 ctx->sid_ctx_length = sid_ctx_len;
882 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 883
884 return 1;
0f113f3e 885}
4eb77b26 886
0f113f3e
MC		 887int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
888 unsigned int sid_ctx_len)
889{
890 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 891 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 892 return 0;
893 }
894 ssl->sid_ctx_length = sid_ctx_len;
895 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 896
897 return 1;
0f113f3e 898}
b4cadc6e 899
dc644fe2 900int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 901{
cd3f8c1b
RS		 902 if (!CRYPTO_THREAD_write_lock(ctx->lock))
903 return 0;
0f113f3e 904 ctx->generate_session_id = cb;
16203f7b 905 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 906 return 1;
907}
dc644fe2
GT		 908
909int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 910{
cd3f8c1b
RS		 911 if (!CRYPTO_THREAD_write_lock(ssl->lock))
912 return 0;
0f113f3e 913 ssl->generate_session_id = cb;
16203f7b 914 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 915 return 1;
916}
dc644fe2 917
f85c9904 918int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 919 unsigned int id_len)
920{
921 /*
922 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 923 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 924 * find if there's a session in the hash table that would conflict with
925 * any new session built out of this id/id_len and the ssl_version in use
926 * by this SSL.
927 */
928 SSL_SESSION r, *p;
929
cbe29648 930 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 931 return 0;
932
933 r.ssl_version = ssl->version;
934 r.session_id_length = id_len;
935 memcpy(r.session_id, id, id_len);
936
cd3f8c1b
RS		 937 if (!CRYPTO_THREAD_read_lock(ssl->session_ctx->lock))
938 return 0;
e2bb9b9b
TS		 939 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
940 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 941 return (p != NULL);
942}
dc644fe2 943
bb7cd4e3 944int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 945{
946 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
947}
bb7cd4e3
DSH		 948
949int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 950{
951 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
952}
926a56bf 953
bb7cd4e3 954int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 955{
956 return X509_VERIFY_PARAM_set_trust(s->param, trust);
957}
bb7cd4e3
DSH		 958
959int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 960{
961 return X509_VERIFY_PARAM_set_trust(s->param, trust);
962}
bb7cd4e3 963
919ba009
VD		 964int SSL_set1_host(SSL *s, const char *hostname)
965{
c832840e
DW		 966 /* If a hostname is provided and parses as an IP address,
967 * treat it as such. */
968 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
969 return 1;
970
919ba009
VD		 971 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
972}
973
974int SSL_add1_host(SSL *s, const char *hostname)
975{
c832840e
DW		 976 /* If a hostname is provided and parses as an IP address,
977 * treat it as such. */
892a9e4c
DW		 978 if (hostname)
979 {
980 ASN1_OCTET_STRING *ip;
981 char *old_ip;
982
983 ip = a2i_IPADDRESS(hostname);
984 if (ip) {
985 /* We didn't want it; only to check if it *is* an IP address */
986 ASN1_OCTET_STRING_free(ip);
987
988 old_ip = X509_VERIFY_PARAM_get1_ip_asc(s->param);
989 if (old_ip)
990 {
f2bfc53b 991 OPENSSL_free(old_ip);
892a9e4c
DW		 992 /* There can be only one IP address */
993 return 0;
994 }
995
996 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
997 }
998 }
c832840e 999
919ba009
VD		 1000 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
1001}
1002
1003void SSL_set_hostflags(SSL *s, unsigned int flags)
1004{
1005 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
1006}
1007
4588cb44 1008const char *SSL_get0_peername(SSL *s)
919ba009
VD		 1009{
1010 return X509_VERIFY_PARAM_get0_peername(s->param);
1011}
1012
1013int SSL_CTX_dane_enable(SSL_CTX *ctx)
1014{
1015 return dane_ctx_enable(&ctx->dane);
1016}
1017
5ae4ceb9
VD		 1018unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1019{
1020 unsigned long orig = ctx->dane.flags;
1021
1022 ctx->dane.flags |= flags;
1023 return orig;
1024}
1025
1026unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1027{
1028 unsigned long orig = ctx->dane.flags;
1029
1030 ctx->dane.flags &= ~flags;
1031 return orig;
1032}
1033
919ba009
VD		 1034int SSL_dane_enable(SSL *s, const char *basedomain)
1035{
b9aec69a 1036 SSL_DANE *dane = &s->dane;
919ba009
VD		 1037
1038 if (s->ctx->dane.mdmax == 0) {
6849b73c 1039 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
919ba009
VD		 1040 return 0;
1041 }
1042 if (dane->trecs != NULL) {
6849b73c 1043 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
919ba009
VD		 1044 return 0;
1045 }
1046
8d887efa
VD		 1047 /*
1048 * Default SNI name. This rejects empty names, while set1_host below
1049 * accepts them and disables host name checks. To avoid side-effects with
1050 * invalid input, set the SNI name first.
1051 */
aff8c126 1052 if (s->ext.hostname == NULL) {
dccd20d1 1053 if (!SSL_set_tlsext_host_name(s, basedomain)) {
6849b73c 1054 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1055 return -1;
8d887efa
VD		 1056 }
1057 }
1058
919ba009
VD		 1059 /* Primary RFC6125 reference identifier */
1060 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
6849b73c 1061 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
919ba009
VD		 1062 return -1;
1063 }
1064
919ba009
VD		 1065 dane->mdpth = -1;
1066 dane->pdpth = -1;
1067 dane->dctx = &s->ctx->dane;
1068 dane->trecs = sk_danetls_record_new_null();
1069
1070 if (dane->trecs == NULL) {
6849b73c 1071 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 1072 return -1;
1073 }
1074 return 1;
1075}
1076
5ae4ceb9
VD		 1077unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1078{
1079 unsigned long orig = ssl->dane.flags;
1080
1081 ssl->dane.flags |= flags;
1082 return orig;
1083}
1084
1085unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1086{
1087 unsigned long orig = ssl->dane.flags;
1088
1089 ssl->dane.flags &= ~flags;
1090 return orig;
1091}
1092
919ba009
VD		 1093int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1094{
b9aec69a 1095 SSL_DANE *dane = &s->dane;
919ba009 1096
c0a445a9 1097 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1098 return -1;
1099 if (dane->mtlsa) {
1100 if (mcert)
1101 *mcert = dane->mcert;
1102 if (mspki)
1103 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1104 }
1105 return dane->mdpth;
1106}
1107
1108int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
6d4313f0 1109 uint8_t *mtype, const unsigned char **data, size_t *dlen)
919ba009 1110{
b9aec69a 1111 SSL_DANE *dane = &s->dane;
919ba009 1112
c0a445a9 1113 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1114 return -1;
1115 if (dane->mtlsa) {
1116 if (usage)
1117 *usage = dane->mtlsa->usage;
1118 if (selector)
1119 *selector = dane->mtlsa->selector;
1120 if (mtype)
1121 *mtype = dane->mtlsa->mtype;
1122 if (data)
1123 *data = dane->mtlsa->data;
1124 if (dlen)
1125 *dlen = dane->mtlsa->dlen;
1126 }
1127 return dane->mdpth;
1128}
1129
b9aec69a 1130SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1131{
1132 return &s->dane;
1133}
1134
1135int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
6d4313f0 1136 uint8_t mtype, const unsigned char *data, size_t dlen)
919ba009
VD		 1137{
1138 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1139}
1140
a230b26e
EK		 1141int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1142 uint8_t ord)
919ba009
VD		 1143{
1144 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1145}
1146
ccf11751 1147int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1148{
1149 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1150}
ccf11751
DSH		 1151
1152int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1153{
1154 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1155}
ccf11751 1156
7af31968 1157X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1158{
1159 return ctx->param;
1160}
7af31968
DSH		 1161
1162X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1163{
1164 return ssl->param;
1165}
7af31968 1166
a5ee80b9 1167void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1168{
1169 ssl_cert_clear_certs(s->cert);
1170}
a5ee80b9 1171
4f43d0e7 1172void SSL_free(SSL *s)
0f113f3e
MC		 1173{
1174 int i;
58964a49 1175
e6e9170d
RS		 1176 if (s == NULL)
1177 return;
2f545ae4 1178 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1179 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1180 if (i > 0)
1181 return;
f3f1cf84 1182 REF_ASSERT_ISNT(i < 0);
d02b48c6 1183
222561fe 1184 X509_VERIFY_PARAM_free(s->param);
919ba009 1185 dane_final(&s->dane);
0f113f3e
MC		 1186 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1187
50ec7505
BP		 1188 RECORD_LAYER_release(&s->rlayer);
1189
b77f3ed1 1190 /* Ignore return value */
2e7dc7cd
MC		 1191 ssl_free_wbio_buffer(s);
1192
65e2d672 1193 BIO_free_all(s->wbio);
50ec7505 1194 s->wbio = NULL;
325cfa85 1195 BIO_free_all(s->rbio);
50ec7505 1196 s->rbio = NULL;
0f113f3e 1197
25aaa98a 1198 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1199
1200 /* add extra stuff */
25aaa98a
RS		 1201 sk_SSL_CIPHER_free(s->cipher_list);
1202 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1203 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
eee2a6a7 1204 sk_SSL_CIPHER_free(s->peer_ciphers);
0f113f3e
MC		 1205
1206 /* Make the next call work :-) */
1207 if (s->session != NULL) {
1208 ssl_clear_bad_session(s);
1209 SSL_SESSION_free(s->session);
1210 }
9368f865 1211 SSL_SESSION_free(s->psksession);
add8d0e9 1212 OPENSSL_free(s->psksession_id);
0f113f3e 1213
d31fb0b5 1214 clear_ciphers(s);
d02b48c6 1215
e0e920b1 1216 ssl_cert_free(s->cert);
29948ac8 1217 OPENSSL_free(s->shared_sigalgs);
0f113f3e 1218 /* Free up if allocated */
d02b48c6 1219
aff8c126 1220 OPENSSL_free(s->ext.hostname);
222da979 1221 SSL_CTX_free(s->session_ctx);
aff8c126 1222 OPENSSL_free(s->ext.ecpointformats);
cd0fb43c 1223 OPENSSL_free(s->ext.peer_ecpointformats);
aff8c126 1224 OPENSSL_free(s->ext.supportedgroups);
45436e61 1225 OPENSSL_free(s->ext.peer_supportedgroups);
aff8c126 1226 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1227#ifndef OPENSSL_NO_OCSP
aff8c126 1228 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1229#endif
ed29e82a
RP		 1230#ifndef OPENSSL_NO_CT
1231 SCT_LIST_free(s->scts);
aff8c126 1232 OPENSSL_free(s->ext.scts);
ed29e82a 1233#endif
aff8c126
RS		 1234 OPENSSL_free(s->ext.ocsp.resp);
1235 OPENSSL_free(s->ext.alpn);
cfef5027 1236 OPENSSL_free(s->ext.tls13_cookie);
94941cad
MK		 1237 if (s->clienthello != NULL)
1238 OPENSSL_free(s->clienthello->pre_proc_exts);
6b1bb98f 1239 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1240 OPENSSL_free(s->pha_context);
1241 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1242
fa7c2637 1243 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1244 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1245
696178ed
DSH		 1246 sk_X509_pop_free(s->verified_chain, X509_free);
1247
0f113f3e
MC		 1248 if (s->method != NULL)
1249 s->method->ssl_free(s);
1250
e0e920b1 1251 SSL_CTX_free(s->ctx);
7c3908dd 1252
ff75a257
MC		 1253 ASYNC_WAIT_CTX_free(s->waitctx);
1254
e481f9b9 1255#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1256 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1257#endif
1258
e783bae2 1259#ifndef OPENSSL_NO_SRTP
25aaa98a 1260 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1261#endif
1262
16203f7b
AG		 1263 CRYPTO_THREAD_lock_free(s->lock);
1264
0f113f3e
MC		 1265 OPENSSL_free(s);
1266}
1267
65e2d672 1268void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1269{
65e2d672 1270 BIO_free_all(s->rbio);
3ffbe008
MC		 1271 s->rbio = rbio;
1272}
1273
65e2d672 1274void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1275{
1276 /*
1277 * If the output buffering BIO is still in place, remove it
1278 */
2e7dc7cd
MC		 1279 if (s->bbio != NULL)
1280 s->wbio = BIO_pop(s->wbio);
1281
65e2d672 1282 BIO_free_all(s->wbio);
0f113f3e 1283 s->wbio = wbio;
2e7dc7cd
MC		 1284
1285 /* Re-attach |bbio| to the new |wbio|. */
1286 if (s->bbio != NULL)
1287 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1288}
d02b48c6 1289
3ffbe008
MC		 1290void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1291{
65e2d672
MC		 1292 /*
1293 * For historical reasons, this function has many different cases in
1294 * ownership handling.
1295 */
1296
1297 /* If nothing has changed, do nothing */
1298 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1299 return;
1300
1301 /*
1302 * If the two arguments are equal then one fewer reference is granted by the
1303 * caller than we want to take
1304 */
1305 if (rbio != NULL && rbio == wbio)
1306 BIO_up_ref(rbio);
1307
1308 /*
1309 * If only the wbio is changed only adopt one reference.
1310 */
1311 if (rbio == SSL_get_rbio(s)) {
1312 SSL_set0_wbio(s, wbio);
1313 return;
1314 }
1315 /*
1316 * There is an asymmetry here for historical reasons. If only the rbio is
1317 * changed AND the rbio and wbio were originally different, then we only
1318 * adopt one reference.
1319 */
1320 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1321 SSL_set0_rbio(s, rbio);
1322 return;
1323 }
1324
1325 /* Otherwise, adopt both references. */
1326 SSL_set0_rbio(s, rbio);
1327 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1328}
1329
0821bcd4 1330BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1331{
2e7dc7cd 1332 return s->rbio;
0f113f3e 1333}
d02b48c6 1334
0821bcd4 1335BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1336{
2e7dc7cd
MC		 1337 if (s->bbio != NULL) {
1338 /*
1339 * If |bbio| is active, the true caller-configured BIO is its
1340 * |next_bio|.
1341 */
1342 return BIO_next(s->bbio);
1343 }
1344 return s->wbio;
0f113f3e 1345}
d02b48c6 1346
0821bcd4 1347int SSL_get_fd(const SSL *s)
0f113f3e 1348{
2e7dc7cd 1349 return SSL_get_rfd(s);
0f113f3e 1350}
24cbf3ef 1351
0821bcd4 1352int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1353{
1354 int ret = -1;
1355 BIO *b, *r;
1356
1357 b = SSL_get_rbio(s);
1358 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1359 if (r != NULL)
1360 BIO_get_fd(r, &ret);
26a7d938 1361 return ret;
0f113f3e 1362}
d02b48c6 1363
0821bcd4 1364int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1365{
1366 int ret = -1;
1367 BIO *b, *r;
1368
1369 b = SSL_get_wbio(s);
1370 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1371 if (r != NULL)
1372 BIO_get_fd(r, &ret);
26a7d938 1373 return ret;
0f113f3e 1374}
24cbf3ef 1375
bc36ee62 1376#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1377int SSL_set_fd(SSL *s, int fd)
1378{
1379 int ret = 0;
1380 BIO *bio = NULL;
1381
1382 bio = BIO_new(BIO_s_socket());
1383
1384 if (bio == NULL) {
6849b73c 1385 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
0f113f3e
MC		 1386 goto err;
1387 }
1388 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1389 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1390#ifndef OPENSSL_NO_KTLS
1391 /*
1392 * The new socket is created successfully regardless of ktls_enable.
1393 * ktls_enable doesn't change any functionality of the socket, except
1394 * changing the setsockopt to enable the processing of ktls_start.
1395 * Thus, it is not a problem to call it for non-TLS sockets.
1396 */
1397 ktls_enable(fd);
1398#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1399 ret = 1;
1400 err:
26a7d938 1401 return ret;
0f113f3e 1402}
d02b48c6 1403
0f113f3e
MC		 1404int SSL_set_wfd(SSL *s, int fd)
1405{
2e7dc7cd 1406 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1407
2e7dc7cd
MC		 1408 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1409 || (int)BIO_get_fd(rbio, NULL) != fd) {
1410 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1411
1412 if (bio == NULL) {
6849b73c 1413 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1414 return 0;
0f113f3e
MC		 1415 }
1416 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1417 SSL_set0_wbio(s, bio);
50ec7505
BP		 1418#ifndef OPENSSL_NO_KTLS
1419 /*
1420 * The new socket is created successfully regardless of ktls_enable.
1421 * ktls_enable doesn't change any functionality of the socket, except
1422 * changing the setsockopt to enable the processing of ktls_start.
1423 * Thus, it is not a problem to call it for non-TLS sockets.
1424 */
1425 ktls_enable(fd);
1426#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1427 } else {
65e2d672
MC		 1428 BIO_up_ref(rbio);
1429 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1430 }
1431 return 1;
0f113f3e
MC		 1432}
1433
1434int SSL_set_rfd(SSL *s, int fd)
1435{
2e7dc7cd 1436 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1437
2e7dc7cd
MC		 1438 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1439 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1440 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1441
1442 if (bio == NULL) {
6849b73c 1443 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1444 return 0;
0f113f3e
MC		 1445 }
1446 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1447 SSL_set0_rbio(s, bio);
2e7dc7cd 1448 } else {
65e2d672
MC		 1449 BIO_up_ref(wbio);
1450 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1451 }
1452
1453 return 1;
0f113f3e
MC		 1454}
1455#endif
ca03109c
BM		 1456
1457/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1458size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1459{
1460 size_t ret = 0;
1461
555cbb32
TS		 1462 ret = s->s3.tmp.finish_md_len;
1463 if (count > ret)
1464 count = ret;
1465 memcpy(buf, s->s3.tmp.finish_md, count);
0f113f3e
MC		 1466 return ret;
1467}
ca03109c
BM		 1468
1469/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1470size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1471{
1472 size_t ret = 0;
ca03109c 1473
555cbb32
TS		 1474 ret = s->s3.tmp.peer_finish_md_len;
1475 if (count > ret)
1476 count = ret;
1477 memcpy(buf, s->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1478 return ret;
1479}
ca03109c 1480
0821bcd4 1481int SSL_get_verify_mode(const SSL *s)
0f113f3e 1482{
26a7d938 1483 return s->verify_mode;
0f113f3e 1484}
d02b48c6 1485
0821bcd4 1486int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1487{
1488 return X509_VERIFY_PARAM_get_depth(s->param);
1489}
7f89714e 1490
0f113f3e 1491int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1492 return s->verify_callback;
0f113f3e 1493}
d02b48c6 1494
0821bcd4 1495int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1496{
26a7d938 1497 return ctx->verify_mode;
0f113f3e 1498}
d02b48c6 1499
0821bcd4 1500int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1501{
1502 return X509_VERIFY_PARAM_get_depth(ctx->param);
1503}
1504
1505int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1506 return ctx->default_verify_callback;
0f113f3e
MC		 1507}
1508
1509void SSL_set_verify(SSL *s, int mode,
1510 int (*callback) (int ok, X509_STORE_CTX *ctx))
1511{
1512 s->verify_mode = mode;
1513 if (callback != NULL)
1514 s->verify_callback = callback;
1515}
1516
1517void SSL_set_verify_depth(SSL *s, int depth)
1518{
1519 X509_VERIFY_PARAM_set_depth(s->param, depth);
1520}
1521
1522void SSL_set_read_ahead(SSL *s, int yes)
1523{
52e1d7b1 1524 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1525}
d02b48c6 1526
0821bcd4 1527int SSL_get_read_ahead(const SSL *s)
0f113f3e 1528{
52e1d7b1 1529 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1530}
d02b48c6 1531
0821bcd4 1532int SSL_pending(const SSL *s)
0f113f3e 1533{
8b0e934a
MC		 1534 size_t pending = s->method->ssl_pending(s);
1535
0f113f3e
MC		 1536 /*
1537 * SSL_pending cannot work properly if read-ahead is enabled
1538 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1539 * impossible to fix since SSL_pending cannot report errors that may be
1540 * observed while scanning the new data. (Note that SSL_pending() is
1541 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1542 *
1543 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1544 * we just return INT_MAX.
0f113f3e 1545 */
348240c6 1546 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1547}
d02b48c6 1548
49580f25
MC		 1549int SSL_has_pending(const SSL *s)
1550{
1551 /*
1552 * Similar to SSL_pending() but returns a 1 to indicate that we have
1553 * unprocessed data available or 0 otherwise (as opposed to the number of
1554 * bytes available). Unlike SSL_pending() this will take into account
1555 * read_ahead data. A 1 return simply indicates that we have unprocessed
1556 * data. That data may not result in any application data, or we may fail
1557 * to parse the records for some reason.
1558 */
b8c49611 1559 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1560 return 1;
1561
1562 return RECORD_LAYER_read_pending(&s->rlayer);
1563}
1564
8c2bfd25 1565X509 *SSL_get1_peer_certificate(const SSL *s)
0f113f3e 1566{
8c2bfd25 1567 X509 *r = SSL_get0_peer_certificate(s);
d02b48c6 1568
8c2bfd25
TS		 1569 if (r != NULL)
1570 X509_up_ref(r);
0f113f3e 1571
26a7d938 1572 return r;
0f113f3e 1573}
d02b48c6 1574
8c2bfd25
TS		 1575X509 *SSL_get0_peer_certificate(const SSL *s)
1576{
1577 if ((s == NULL) || (s->session == NULL))
1578 return NULL;
1579 else
1580 return s->session->peer;
1581}
1582
0821bcd4 1583STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1584{
1585 STACK_OF(X509) *r;
1586
c34b0f99 1587 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1588 r = NULL;
1589 else
c34b0f99 1590 r = s->session->peer_chain;
0f113f3e
MC		 1591
1592 /*
1593 * If we are a client, cert_chain includes the peer's own certificate; if
1594 * we are a server, it does not.
1595 */
1596
26a7d938 1597 return r;
0f113f3e
MC		 1598}
1599
1600/*
1601 * Now in theory, since the calling process own 't' it should be safe to
1602 * modify. We need to be able to read f without being hassled
1603 */
17dd65e6 1604int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1605{
16203f7b 1606 int i;
3e6a0d57 1607 /* Do we need to do SSL locking? */
61986d32 1608 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1609 return 0;
69f68237 1610 }
0f113f3e
MC		 1611
1612 /*
87d9cafa 1613 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1614 */
1615 if (t->method != f->method) {
919ba009
VD		 1616 t->method->ssl_free(t);
1617 t->method = f->method;
1618 if (t->method->ssl_new(t) == 0)
1619 return 0;
0f113f3e
MC		 1620 }
1621
2f545ae4 1622 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1623 ssl_cert_free(t->cert);
1624 t->cert = f->cert;
348240c6 1625 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1626 return 0;
69f68237 1627 }
17dd65e6
MC		 1628
1629 return 1;
0f113f3e 1630}
d02b48c6 1631
58964a49 1632/* Fix this so it checks all the valid key/cert options */
0821bcd4 1633int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1634{
a230b26e 1635 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
6849b73c 1636 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1637 return 0;
0f113f3e
MC		 1638 }
1639 if (ctx->cert->key->privatekey == NULL) {
6849b73c 1640 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1641 return 0;
0f113f3e 1642 }
26a7d938
K		 1643 return X509_check_private_key
1644 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1645}
d02b48c6 1646
58964a49 1647/* Fix this function so that it takes an optional type parameter */
0821bcd4 1648int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1649{
1650 if (ssl == NULL) {
6849b73c 1651 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1652 return 0;
0f113f3e 1653 }
0f113f3e 1654 if (ssl->cert->key->x509 == NULL) {
6849b73c 1655 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1656 return 0;
0f113f3e
MC		 1657 }
1658 if (ssl->cert->key->privatekey == NULL) {
6849b73c 1659 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1660 return 0;
0f113f3e 1661 }
26a7d938
K		 1662 return X509_check_private_key(ssl->cert->key->x509,
1663 ssl->cert->key->privatekey);
0f113f3e 1664}
d02b48c6 1665
07bbc92c
MC		 1666int SSL_waiting_for_async(SSL *s)
1667{
e8aa8b6c 1668 if (s->job)
82676094
MC		 1669 return 1;
1670
07bbc92c
MC		 1671 return 0;
1672}
1673
ff75a257 1674int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1675{
ff75a257
MC		 1676 ASYNC_WAIT_CTX *ctx = s->waitctx;
1677
1678 if (ctx == NULL)
1679 return 0;
1680 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1681}
f4da39d2 1682
ff75a257
MC		 1683int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1684 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1685{
1686 ASYNC_WAIT_CTX *ctx = s->waitctx;
1687
1688 if (ctx == NULL)
1689 return 0;
1690 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1691 numdelfds);
f4da39d2
MC		 1692}
1693
9f5a87fd
PY		 1694int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1695{
1696 ctx->async_cb = callback;
1697 return 1;
1698}
1699
1700int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1701{
1702 ctx->async_cb_arg = arg;
1703 return 1;
1704}
1705
1706int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1707{
1708 s->async_cb = callback;
1709 return 1;
1710}
1711
1712int SSL_set_async_callback_arg(SSL *s, void *arg)
1713{
1714 s->async_cb_arg = arg;
1715 return 1;
1716}
1717
1718int SSL_get_async_status(SSL *s, int *status)
1719{
1720 ASYNC_WAIT_CTX *ctx = s->waitctx;
1721
1722 if (ctx == NULL)
1723 return 0;
1724 *status = ASYNC_WAIT_CTX_get_status(ctx);
1725 return 1;
1726}
1727
4f43d0e7 1728int SSL_accept(SSL *s)
0f113f3e 1729{
c4c32155 1730 if (s->handshake_func == NULL) {
0f113f3e
MC		 1731 /* Not properly initialized yet */
1732 SSL_set_accept_state(s);
07bbc92c 1733 }
add2f5ca
MC		 1734
1735 return SSL_do_handshake(s);
0f113f3e 1736}
d02b48c6 1737
4f43d0e7 1738int SSL_connect(SSL *s)
0f113f3e 1739{
c4c32155 1740 if (s->handshake_func == NULL) {
0f113f3e
MC		 1741 /* Not properly initialized yet */
1742 SSL_set_connect_state(s);
add2f5ca 1743 }
b31b04d9 1744
add2f5ca 1745 return SSL_do_handshake(s);
0f113f3e 1746}
d02b48c6 1747
0821bcd4 1748long SSL_get_default_timeout(const SSL *s)
0f113f3e 1749{
26a7d938 1750 return s->method->get_timeout();
0f113f3e
MC		 1751}
1752
9f5a87fd
PY		 1753static int ssl_async_wait_ctx_cb(void *arg)
1754{
1755 SSL *s = (SSL *)arg;
1756
1757 return s->async_cb(s, s->async_cb_arg);
1758}
1759
7fecbf6f 1760static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1761 int (*func) (void *))
1762{
add2f5ca 1763 int ret;
ff75a257
MC		 1764 if (s->waitctx == NULL) {
1765 s->waitctx = ASYNC_WAIT_CTX_new();
1766 if (s->waitctx == NULL)
1767 return -1;
9f5a87fd
PY		 1768 if (s->async_cb != NULL
1769 && !ASYNC_WAIT_CTX_set_callback
1770 (s->waitctx, ssl_async_wait_ctx_cb, s))
1771 return -1;
ff75a257 1772 }
e8aa8b6c 1773 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1774 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1775 case ASYNC_ERR:
1776 s->rwstate = SSL_NOTHING;
6849b73c 1777 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1778 return -1;
1779 case ASYNC_PAUSE:
1780 s->rwstate = SSL_ASYNC_PAUSED;
1781 return -1;
fc7f190c
MC		 1782 case ASYNC_NO_JOBS:
1783 s->rwstate = SSL_ASYNC_NO_JOBS;
1784 return -1;
add2f5ca
MC		 1785 case ASYNC_FINISH:
1786 s->job = NULL;
1787 return ret;
1788 default:
1789 s->rwstate = SSL_NOTHING;
6849b73c 1790 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1791 /* Shouldn't happen */
1792 return -1;
1793 }
1794}
07bbc92c 1795
add2f5ca 1796static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1797{
1798 struct ssl_async_args *args;
1799 SSL *s;
1800 void *buf;
348240c6 1801 size_t num;
07bbc92c
MC		 1802
1803 args = (struct ssl_async_args *)vargs;
1804 s = args->s;
1805 buf = args->buf;
1806 num = args->num;
ec447924
MC		 1807 switch (args->type) {
1808 case READFUNC:
7ee8627f 1809 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1810 case WRITEFUNC:
7ee8627f 1811 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1812 case OTHERFUNC:
1813 return args->f.func_other(s);
1814 }
1815 return -1;
07bbc92c
MC		 1816}
1817
4ee7d3f9 1818int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1819{
c4c32155 1820 if (s->handshake_func == NULL) {
6849b73c 1821 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1822 return -1;
1823 }
1824
1825 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1826 s->rwstate = SSL_NOTHING;
4ee7d3f9 1827 return 0;
0f113f3e 1828 }
07bbc92c 1829
564547e4
MC		 1830 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1831 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
6849b73c 1832 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
0a5ece5b
MC		 1833 return 0;
1834 }
564547e4
MC		 1835 /*
1836 * If we are a client and haven't received the ServerHello etc then we
1837 * better do that
1838 */
1839 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1840
e8aa8b6c 1841 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1842 struct ssl_async_args args;
eda75751 1843 int ret;
add2f5ca
MC		 1844
1845 args.s = s;
1846 args.buf = buf;
1847 args.num = num;
ec447924
MC		 1848 args.type = READFUNC;
1849 args.f.func_read = s->method->ssl_read;
add2f5ca 1850
eda75751 1851 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1852 *readbytes = s->asyncrw;
eda75751 1853 return ret;
07bbc92c 1854 } else {
54105ddd 1855 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1856 }
0f113f3e
MC		 1857}
1858
4ee7d3f9 1859int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1860{
1861 int ret;
54105ddd 1862 size_t readbytes;
eda75751
MC		 1863
1864 if (num < 0) {
6849b73c 1865 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
eda75751
MC		 1866 return -1;
1867 }
1868
4ee7d3f9 1869 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1870
1871 /*
1872 * The cast is safe here because ret should be <= INT_MAX because num is
1873 * <= INT_MAX
1874 */
1875 if (ret > 0)
54105ddd 1876 ret = (int)readbytes;
eda75751
MC		 1877
1878 return ret;
1879}
1880
4ee7d3f9
KR		 1881int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1882{
1883 int ret = ssl_read_internal(s, buf, num, readbytes);
1884
1885 if (ret < 0)
1886 ret = 0;
1887 return ret;
1888}
1889
f533fbd4 1890int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1891{
1892 int ret;
1893
1894 if (!s->server) {
6849b73c 1895 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 1896 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1897 }
1898
d781d247
MC		 1899 switch (s->early_data_state) {
1900 case SSL_EARLY_DATA_NONE:
1901 if (!SSL_in_before(s)) {
6849b73c 1902 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 1903 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1904 }
1905 /* fall through */
1906
1907 case SSL_EARLY_DATA_ACCEPT_RETRY:
1908 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1909 ret = SSL_accept(s);
1910 if (ret <= 0) {
1911 /* NBIO or error */
1912 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1913 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1914 }
1915 /* fall through */
1916
1917 case SSL_EARLY_DATA_READ_RETRY:
1918 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1919 s->early_data_state = SSL_EARLY_DATA_READING;
1920 ret = SSL_read_ex(s, buf, num, readbytes);
1921 /*
ef6c191b
MC		 1922 * State machine will update early_data_state to
1923 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1924 * message
d781d247
MC		 1925 */
1926 if (ret > 0 || (ret <= 0 && s->early_data_state
1927 != SSL_EARLY_DATA_FINISHED_READING)) {
1928 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1929 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1930 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1931 }
1932 } else {
1933 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1934 }
1935 *readbytes = 0;
f533fbd4 1936 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1937
1938 default:
6849b73c 1939 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 1940 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1941 }
1942}
1943
f5b519c4 1944int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1945{
1946 return s->ext.early_data;
1947}
1948
4ee7d3f9 1949static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1950{
c4c32155 1951 if (s->handshake_func == NULL) {
6849b73c 1952 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1953 return -1;
1954 }
1955
1956 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1957 return 0;
0f113f3e 1958 }
e8aa8b6c 1959 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1960 struct ssl_async_args args;
eda75751 1961 int ret;
0f113f3e 1962
add2f5ca
MC		 1963 args.s = s;
1964 args.buf = buf;
1965 args.num = num;
ec447924
MC		 1966 args.type = READFUNC;
1967 args.f.func_read = s->method->ssl_peek;
07bbc92c 1968
eda75751 1969 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1970 *readbytes = s->asyncrw;
eda75751 1971 return ret;
add2f5ca 1972 } else {
54105ddd 1973 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1974 }
07bbc92c
MC		 1975}
1976
4ee7d3f9 1977int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1978{
1979 int ret;
4ee7d3f9 1980 size_t readbytes;
7ee8627f
MC		 1981
1982 if (num < 0) {
6849b73c 1983 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1984 return -1;
1985 }
1986
4ee7d3f9 1987 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1988
1989 /*
1990 * The cast is safe here because ret should be <= INT_MAX because num is
1991 * <= INT_MAX
1992 */
1993 if (ret > 0)
4ee7d3f9 1994 ret = (int)readbytes;
7ee8627f
MC		 1995
1996 return ret;
1997}
1998
4ee7d3f9
KR		 1999
2000int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2001{
2002 int ret = ssl_peek_internal(s, buf, num, readbytes);
2003
2004 if (ret < 0)
2005 ret = 0;
2006 return ret;
2007}
2008
2009int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 2010{
c4c32155 2011 if (s->handshake_func == NULL) {
6849b73c 2012 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2013 return -1;
2014 }
2015
2016 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2017 s->rwstate = SSL_NOTHING;
6849b73c 2018 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
4ee7d3f9 2019 return -1;
0f113f3e 2020 }
07bbc92c 2021
ef6c191b 2022 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 2023 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2024 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
6849b73c 2025 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 2026 return 0;
0a5ece5b 2027 }
564547e4
MC		 2028 /* If we are a client and haven't sent the Finished we better do that */
2029 ossl_statem_check_finish_init(s, 1);
49e7fe12 2030
e8aa8b6c 2031 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 2032 int ret;
add2f5ca
MC		 2033 struct ssl_async_args args;
2034
2035 args.s = s;
2036 args.buf = (void *)buf;
2037 args.num = num;
ec447924
MC		 2038 args.type = WRITEFUNC;
2039 args.f.func_write = s->method->ssl_write;
add2f5ca 2040
7ee8627f
MC		 2041 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2042 *written = s->asyncrw;
2043 return ret;
07bbc92c 2044 } else {
7ee8627f 2045 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2046 }
0f113f3e 2047}
d02b48c6 2048
7c3a7561
BP		 2049ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2050{
2051 ossl_ssize_t ret;
2052
2053 if (s->handshake_func == NULL) {
6849b73c 2054 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2055 return -1;
2056 }
2057
2058 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2059 s->rwstate = SSL_NOTHING;
6849b73c 2060 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
7c3a7561
BP		 2061 return -1;
2062 }
2063
2064 if (!BIO_get_ktls_send(s->wbio)) {
6849b73c 2065 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2066 return -1;
2067 }
2068
2069 /* If we have an alert to send, lets send it */
2070 if (s->s3.alert_dispatch) {
2071 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2072 if (ret <= 0) {
2073 /* SSLfatal() already called if appropriate */
2074 return ret;
2075 }
2076 /* if it went, fall through and send more stuff */
2077 }
2078
2079 s->rwstate = SSL_WRITING;
2080 if (BIO_flush(s->wbio) <= 0) {
2081 if (!BIO_should_retry(s->wbio)) {
2082 s->rwstate = SSL_NOTHING;
2083 } else {
2084#ifdef EAGAIN
2085 set_sys_error(EAGAIN);
2086#endif
2087 }
2088 return -1;
2089 }
2090
712c0942 2091#ifdef OPENSSL_NO_KTLS
fa7a8074
RL		 2092 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2093 "can't call ktls_sendfile(), ktls disabled");
712c0942 2094 return -1;
7c3a7561 2095#else
712c0942 2096 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
7c3a7561
BP		 2097 if (ret < 0) {
2098#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2099 if ((get_last_sys_error() == EAGAIN) ||
2100 (get_last_sys_error() == EINTR) ||
2101 (get_last_sys_error() == EBUSY))
2102 BIO_set_retry_write(s->wbio);
2103 else
2104#endif
6849b73c 2105 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2106 return ret;
2107 }
2108 s->rwstate = SSL_NOTHING;
2109 return ret;
712c0942 2110#endif
7c3a7561
BP		 2111}
2112
4ee7d3f9
KR		 2113int SSL_write(SSL *s, const void *buf, int num)
2114{
2115 int ret;
2116 size_t written;
2117
2118 if (num < 0) {
6849b73c 2119 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
4ee7d3f9
KR		 2120 return -1;
2121 }
2122
2123 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2124
2125 /*
2126 * The cast is safe here because ret should be <= INT_MAX because num is
2127 * <= INT_MAX
2128 */
2129 if (ret > 0)
2130 ret = (int)written;
2131
2132 return ret;
2133}
2134
2135int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2136{
2137 int ret = ssl_write_internal(s, buf, num, written);
2138
2139 if (ret < 0)
2140 ret = 0;
2141 return ret;
2142}
2143
0665b4ed 2144int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2145{
a0cb628b 2146 int ret, early_data_state;
2a8db717 2147 size_t writtmp;
f7414b08 2148 uint32_t partialwrite;
49e7fe12 2149
49e7fe12
MC		 2150 switch (s->early_data_state) {
2151 case SSL_EARLY_DATA_NONE:
09f28874
MC		 2152 if (s->server
2153 || !SSL_in_before(s)
add8d0e9
MC		 2154 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2155 && (s->psk_use_session_cb == NULL))) {
6849b73c 2156 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2157 return 0;
2158 }
2159 /* fall through */
2160
2161 case SSL_EARLY_DATA_CONNECT_RETRY:
2162 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2163 ret = SSL_connect(s);
2164 if (ret <= 0) {
2165 /* NBIO or error */
2166 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2167 return 0;
2168 }
2169 /* fall through */
2170
2171 case SSL_EARLY_DATA_WRITE_RETRY:
2172 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2173 /*
2174 * We disable partial write for early data because we don't keep track
2175 * of how many bytes we've written between the SSL_write_ex() call and
2176 * the flush if the flush needs to be retried)
2177 */
2178 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2179 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2180 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2181 s->mode |= partialwrite;
2a8db717
MC		 2182 if (!ret) {
2183 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2184 return ret;
2185 }
2186 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2187 /* fall through */
2188
2189 case SSL_EARLY_DATA_WRITE_FLUSH:
2190 /* The buffering BIO is still in place so we need to flush it */
2191 if (statem_flush(s) != 1)
2192 return 0;
2a8db717 2193 *written = num;
49e7fe12 2194 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2195 return 1;
49e7fe12 2196
116d0da5 2197 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2198 case SSL_EARLY_DATA_READ_RETRY:
2199 early_data_state = s->early_data_state;
09f28874
MC		 2200 /* We are a server writing to an unauthenticated client */
2201 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2202 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2203 /* The buffering BIO is still in place */
2204 if (ret)
2205 (void)BIO_flush(s->wbio);
bbea9f2c 2206 s->early_data_state = early_data_state;
09f28874
MC		 2207 return ret;
2208
49e7fe12 2209 default:
6849b73c 2210 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2211 return 0;
2212 }
2213}
2214
4f43d0e7 2215int SSL_shutdown(SSL *s)
0f113f3e
MC		 2216{
2217 /*
2218 * Note that this function behaves differently from what one might
2219 * expect. Return values are 0 for no success (yet), 1 for success; but
2220 * calling it once is usually not enough, even if blocking I/O is used
2221 * (see ssl3_shutdown).
2222 */
2223
c4c32155 2224 if (s->handshake_func == NULL) {
6849b73c 2225 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2226 return -1;
2227 }
2228
64f9f406 2229 if (!SSL_in_init(s)) {
e8aa8b6c 2230 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2231 struct ssl_async_args args;
ec447924 2232
64f9f406
MC		 2233 args.s = s;
2234 args.type = OTHERFUNC;
2235 args.f.func_other = s->method->ssl_shutdown;
ec447924 2236
64f9f406
MC		 2237 return ssl_start_async_job(s, &args, ssl_io_intern);
2238 } else {
2239 return s->method->ssl_shutdown(s);
2240 }
ec447924 2241 } else {
6849b73c 2242 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
64f9f406 2243 return -1;
ec447924 2244 }
0f113f3e 2245}
d02b48c6 2246
4fbfe86a 2247int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2248{
f14afcaa 2249 /*
a9998e2f 2250 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2251 * negotiated, and that it is appropriate to call SSL_key_update() instead
2252 * of SSL_renegotiate().
2253 */
44c04a2e 2254 if (!SSL_IS_TLS13(s)) {
6849b73c 2255 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
44c04a2e
MC		 2256 return 0;
2257 }
2258
2259 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2260 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
6849b73c 2261 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
44c04a2e
MC		 2262 return 0;
2263 }
2264
2265 if (!SSL_is_init_finished(s)) {
6849b73c 2266 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
44c04a2e
MC		 2267 return 0;
2268 }
2269
2270 ossl_statem_set_in_init(s, 1);
44c04a2e 2271 s->key_update = updatetype;
44c04a2e
MC		 2272 return 1;
2273}
2274
3499327b 2275int SSL_get_key_update_type(const SSL *s)
53d1d07d
MC		 2276{
2277 return s->key_update;
2278}
2279
4f43d0e7 2280int SSL_renegotiate(SSL *s)
0f113f3e 2281{
44c04a2e 2282 if (SSL_IS_TLS13(s)) {
6849b73c 2283 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2284 return 0;
44c04a2e 2285 }
cda6b998 2286
db0f35dd 2287 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
6849b73c 2288 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
db0f35dd
TS		 2289 return 0;
2290 }
44959ee4 2291
db0f35dd 2292 s->renegotiate = 1;
0f113f3e 2293 s->new_session = 1;
44959ee4 2294
26a7d938 2295 return s->method->ssl_renegotiate(s);
0f113f3e 2296}
d02b48c6 2297
44959ee4 2298int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2299{
db0f35dd 2300 if (SSL_IS_TLS13(s)) {
6849b73c 2301 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2302 return 0;
db0f35dd 2303 }
cda6b998 2304
db0f35dd 2305 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
6849b73c 2306 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
db0f35dd
TS		 2307 return 0;
2308 }
c519e89f 2309
db0f35dd 2310 s->renegotiate = 1;
0f113f3e 2311 s->new_session = 0;
c519e89f 2312
26a7d938 2313 return s->method->ssl_renegotiate(s);
0f113f3e 2314}
44959ee4 2315
3499327b 2316int SSL_renegotiate_pending(const SSL *s)
0f113f3e
MC		 2317{
2318 /*
2319 * becomes true when negotiation is requested; false again once a
2320 * handshake has finished
2321 */
2322 return (s->renegotiate != 0);
2323}
2324
3bfacb5f
BK		 2325int SSL_new_session_ticket(SSL *s)
2326{
35774d55
BK		 2327 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2328 || !SSL_IS_TLS13(s))
2329 return 0;
2330 s->ext.extra_tickets_expected++;
2331 return 1;
3bfacb5f
BK		 2332}
2333
0f113f3e
MC		 2334long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2335{
2336 long l;
2337
2338 switch (cmd) {
2339 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2340 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2341 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2342 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2343 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2344 return l;
0f113f3e
MC		 2345
2346 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2347 s->msg_callback_arg = parg;
2348 return 1;
2349
0f113f3e
MC		 2350 case SSL_CTRL_MODE:
2351 return (s->mode |= larg);
2352 case SSL_CTRL_CLEAR_MODE:
2353 return (s->mode &= ~larg);
2354 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2355 return (long)s->max_cert_list;
0f113f3e 2356 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2357 if (larg < 0)
2358 return 0;
2359 l = (long)s->max_cert_list;
2360 s->max_cert_list = (size_t)larg;
2361 return l;
0f113f3e
MC		 2362 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2363 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2364 return 0;
50ec7505
BP		 2365#ifndef OPENSSL_NO_KTLS
2366 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2367 return 0;
2368#endif /* OPENSSL_NO_KTLS */
0f113f3e 2369 s->max_send_fragment = larg;
d102d9df
MC		 2370 if (s->max_send_fragment < s->split_send_fragment)
2371 s->split_send_fragment = s->max_send_fragment;
2372 return 1;
2373 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2374 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2375 return 0;
2376 s->split_send_fragment = larg;
0f113f3e 2377 return 1;
d102d9df
MC		 2378 case SSL_CTRL_SET_MAX_PIPELINES:
2379 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2380 return 0;
2381 s->max_pipelines = larg;
94777c9c
MC		 2382 if (larg > 1)
2383 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2384 return 1;
0f113f3e 2385 case SSL_CTRL_GET_RI_SUPPORT:
555cbb32 2386 return s->s3.send_connection_binding;
0f113f3e
MC		 2387 case SSL_CTRL_CERT_FLAGS:
2388 return (s->cert->cert_flags |= larg);
2389 case SSL_CTRL_CLEAR_CERT_FLAGS:
2390 return (s->cert->cert_flags &= ~larg);
2391
2392 case SSL_CTRL_GET_RAW_CIPHERLIST:
2393 if (parg) {
555cbb32 2394 if (s->s3.tmp.ciphers_raw == NULL)
0f113f3e 2395 return 0;
555cbb32
TS		 2396 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2397 return (int)s->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2398 } else {
2399 return TLS_CIPHER_LEN;
2400 }
c5364614 2401 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2402 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2403 return -1;
dccd20d1 2404 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2405 return 1;
2406 else
2407 return 0;
7946ab33 2408 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2409 return ssl_check_allowed_versions(larg, s->max_proto_version)
2410 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2411 &s->min_proto_version);
3edabd3c
CH		 2412 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2413 return s->min_proto_version;
7946ab33 2414 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2415 return ssl_check_allowed_versions(s->min_proto_version, larg)
2416 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2417 &s->max_proto_version);
3edabd3c
CH		 2418 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2419 return s->max_proto_version;
0f113f3e 2420 default:
26a7d938 2421 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2422 }
2423}
2424
2425long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2426{
2427 switch (cmd) {
2428 case SSL_CTRL_SET_MSG_CALLBACK:
2429 s->msg_callback = (void (*)
2430 (int write_p, int version, int content_type,
2431 const void *buf, size_t len, SSL *ssl,
2432 void *arg))(fp);
2433 return 1;
2434
2435 default:
26a7d938 2436 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2437 }
2438}
d3442bc7 2439
3c1d6bbc 2440LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2441{
2442 return ctx->sessions;
2443}
2444
2445long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2446{
2447 long l;
2448 /* For some cases with ctx == NULL perform syntax checks */
2449 if (ctx == NULL) {
2450 switch (cmd) {
de4d764e 2451 case SSL_CTRL_SET_GROUPS_LIST:
260009d8 2452 return tls1_set_groups_list(ctx, NULL, NULL, parg);
0f113f3e
MC		 2453 case SSL_CTRL_SET_SIGALGS_LIST:
2454 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2455 return tls1_set_sigalgs_list(NULL, parg, 0);
2456 default:
2457 return 0;
2458 }
2459 }
2460
2461 switch (cmd) {
2462 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2463 return ctx->read_ahead;
0f113f3e
MC		 2464 case SSL_CTRL_SET_READ_AHEAD:
2465 l = ctx->read_ahead;
2466 ctx->read_ahead = larg;
26a7d938 2467 return l;
0f113f3e
MC		 2468
2469 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2470 ctx->msg_callback_arg = parg;
2471 return 1;
2472
2473 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2474 return (long)ctx->max_cert_list;
0f113f3e 2475 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2476 if (larg < 0)
2477 return 0;
2478 l = (long)ctx->max_cert_list;
2479 ctx->max_cert_list = (size_t)larg;
2480 return l;
0f113f3e
MC		 2481
2482 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2483 if (larg < 0)
2484 return 0;
2485 l = (long)ctx->session_cache_size;
2486 ctx->session_cache_size = (size_t)larg;
2487 return l;
0f113f3e 2488 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2489 return (long)ctx->session_cache_size;
0f113f3e
MC		 2490 case SSL_CTRL_SET_SESS_CACHE_MODE:
2491 l = ctx->session_cache_mode;
2492 ctx->session_cache_mode = larg;
26a7d938 2493 return l;
0f113f3e 2494 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2495 return ctx->session_cache_mode;
0f113f3e
MC		 2496
2497 case SSL_CTRL_SESS_NUMBER:
26a7d938 2498 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2499 case SSL_CTRL_SESS_CONNECT:
9ef9088c 2500 return tsan_load(&ctx->stats.sess_connect);
0f113f3e 2501 case SSL_CTRL_SESS_CONNECT_GOOD:
9ef9088c 2502 return tsan_load(&ctx->stats.sess_connect_good);
0f113f3e 2503 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
9ef9088c 2504 return tsan_load(&ctx->stats.sess_connect_renegotiate);
0f113f3e 2505 case SSL_CTRL_SESS_ACCEPT:
9ef9088c 2506 return tsan_load(&ctx->stats.sess_accept);
0f113f3e 2507 case SSL_CTRL_SESS_ACCEPT_GOOD:
9ef9088c 2508 return tsan_load(&ctx->stats.sess_accept_good);
0f113f3e 2509 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
9ef9088c 2510 return tsan_load(&ctx->stats.sess_accept_renegotiate);
0f113f3e 2511 case SSL_CTRL_SESS_HIT:
9ef9088c 2512 return tsan_load(&ctx->stats.sess_hit);
0f113f3e 2513 case SSL_CTRL_SESS_CB_HIT:
9ef9088c 2514 return tsan_load(&ctx->stats.sess_cb_hit);
0f113f3e 2515 case SSL_CTRL_SESS_MISSES:
9ef9088c 2516 return tsan_load(&ctx->stats.sess_miss);
0f113f3e 2517 case SSL_CTRL_SESS_TIMEOUTS:
9ef9088c 2518 return tsan_load(&ctx->stats.sess_timeout);
0f113f3e 2519 case SSL_CTRL_SESS_CACHE_FULL:
9ef9088c 2520 return tsan_load(&ctx->stats.sess_cache_full);
0f113f3e
MC		 2521 case SSL_CTRL_MODE:
2522 return (ctx->mode |= larg);
2523 case SSL_CTRL_CLEAR_MODE:
2524 return (ctx->mode &= ~larg);
2525 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2526 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2527 return 0;
2528 ctx->max_send_fragment = larg;
d102d9df 2529 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2530 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2531 return 1;
d102d9df 2532 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2533 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2534 return 0;
2535 ctx->split_send_fragment = larg;
2536 return 1;
2537 case SSL_CTRL_SET_MAX_PIPELINES:
2538 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2539 return 0;
2540 ctx->max_pipelines = larg;
07077415 2541 return 1;
0f113f3e
MC		 2542 case SSL_CTRL_CERT_FLAGS:
2543 return (ctx->cert->cert_flags |= larg);
2544 case SSL_CTRL_CLEAR_CERT_FLAGS:
2545 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2546 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2547 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2548 && ssl_set_version_bound(ctx->method->version, (int)larg,
2549 &ctx->min_proto_version);
3edabd3c
CH		 2550 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2551 return ctx->min_proto_version;
7946ab33 2552 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2553 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2554 && ssl_set_version_bound(ctx->method->version, (int)larg,
2555 &ctx->max_proto_version);
3edabd3c
CH		 2556 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2557 return ctx->max_proto_version;
0f113f3e 2558 default:
26a7d938 2559 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2560 }
2561}
2562
2563long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2564{
2565 switch (cmd) {
2566 case SSL_CTRL_SET_MSG_CALLBACK:
2567 ctx->msg_callback = (void (*)
2568 (int write_p, int version, int content_type,
2569 const void *buf, size_t len, SSL *ssl,
2570 void *arg))(fp);
2571 return 1;
2572
2573 default:
26a7d938 2574 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2575 }
2576}
d3442bc7 2577
ccd86b68 2578int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2579{
90d9e49a
DSH		 2580 if (a->id > b->id)
2581 return 1;
2582 if (a->id < b->id)
2583 return -1;
2584 return 0;
0f113f3e
MC		 2585}
2586
2587int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2588 const SSL_CIPHER *const *bp)
2589{
90d9e49a
DSH		 2590 if ((*ap)->id > (*bp)->id)
2591 return 1;
2592 if ((*ap)->id < (*bp)->id)
2593 return -1;
2594 return 0;
0f113f3e 2595}
d02b48c6 2596
4f43d0e7 2597/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2598 * preference */
0821bcd4 2599STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2600{
2601 if (s != NULL) {
2602 if (s->cipher_list != NULL) {
26a7d938 2603 return s->cipher_list;
0f113f3e 2604 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2605 return s->ctx->cipher_list;
0f113f3e
MC		 2606 }
2607 }
26a7d938 2608 return NULL;
0f113f3e
MC		 2609}
2610
831eef2c
NM		 2611STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2612{
eee2a6a7 2613 if ((s == NULL) || !s->server)
831eef2c 2614 return NULL;
eee2a6a7 2615 return s->peer_ciphers;
831eef2c
NM		 2616}
2617
8b8e5bed 2618STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2619{
2620 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2621 int i;
1d0c08b4 2622
0f113f3e
MC		 2623 ciphers = SSL_get_ciphers(s);
2624 if (!ciphers)
2625 return NULL;
1d0c08b4
MC		 2626 if (!ssl_set_client_disabled(s))
2627 return NULL;
0f113f3e
MC		 2628 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2629 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2630 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2631 if (!sk)
2632 sk = sk_SSL_CIPHER_new_null();
2633 if (!sk)
2634 return NULL;
2635 if (!sk_SSL_CIPHER_push(sk, c)) {
2636 sk_SSL_CIPHER_free(sk);
2637 return NULL;
2638 }
2639 }
2640 }
2641 return sk;
2642}
8b8e5bed 2643
4f43d0e7 2644/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2645 * algorithm id */
f73e07cf 2646STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2647{
2648 if (s != NULL) {
2649 if (s->cipher_list_by_id != NULL) {
26a7d938 2650 return s->cipher_list_by_id;
0f113f3e 2651 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2652 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2653 }
2654 }
26a7d938 2655 return NULL;
0f113f3e 2656}
d02b48c6 2657
4f43d0e7 2658/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2659const char *SSL_get_cipher_list(const SSL *s, int n)
2660{
4a640fb6 2661 const SSL_CIPHER *c;
0f113f3e
MC		 2662 STACK_OF(SSL_CIPHER) *sk;
2663
2664 if (s == NULL)
26a7d938 2665 return NULL;
0f113f3e
MC		 2666 sk = SSL_get_ciphers(s);
2667 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2668 return NULL;
0f113f3e
MC		 2669 c = sk_SSL_CIPHER_value(sk, n);
2670 if (c == NULL)
26a7d938
K		 2671 return NULL;
2672 return c->name;
0f113f3e 2673}
d02b48c6 2674
9d5ac953
KY		 2675/** return a STACK of the ciphers available for the SSL_CTX and in order of
2676 * preference */
2677STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2678{
2679 if (ctx != NULL)
2680 return ctx->cipher_list;
2681 return NULL;
2682}
2683
3c83c5ba
SR		 2684/*
2685 * Distinguish between ciphers controlled by set_ciphersuite() and
2686 * set_cipher_list() when counting.
2687 */
2688static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2689{
2690 int i, num = 0;
2691 const SSL_CIPHER *c;
2692
2693 if (sk == NULL)
2694 return 0;
2695 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2696 c = sk_SSL_CIPHER_value(sk, i);
2697 if (c->min_tls >= TLS1_3_VERSION)
2698 continue;
2699 num++;
2700 }
2701 return num;
2702}
2703
25f923dd 2704/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2705int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2706{
2707 STACK_OF(SSL_CIPHER) *sk;
2708
a68eee67 2709 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
f865b081
MC		 2710 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2711 ctx->cert);
0f113f3e
MC		 2712 /*
2713 * ssl_create_cipher_list may return an empty stack if it was unable to
2714 * find a cipher matching the given rule string (for example if the rule
2715 * string specifies a cipher which has been disabled). This is not an
2716 * error as far as ssl_create_cipher_list is concerned, and hence
2717 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2718 */
2719 if (sk == NULL)
2720 return 0;
3c83c5ba 2721 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 2722 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 2723 return 0;
2724 }
2725 return 1;
2726}
d02b48c6 2727
4f43d0e7 2728/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2729int SSL_set_cipher_list(SSL *s, const char *str)
2730{
2731 STACK_OF(SSL_CIPHER) *sk;
2732
a68eee67 2733 sk = ssl_create_cipher_list(s->ctx, s->tls13_ciphersuites,
f865b081
MC		 2734 &s->cipher_list, &s->cipher_list_by_id, str,
2735 s->cert);
0f113f3e
MC		 2736 /* see comment in SSL_CTX_set_cipher_list */
2737 if (sk == NULL)
2738 return 0;
3c83c5ba 2739 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 2740 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 2741 return 0;
2742 }
2743 return 1;
2744}
d02b48c6 2745
a216df59 2746char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 2747{
2748 char *p;
a216df59 2749 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 2750 const SSL_CIPHER *c;
0f113f3e
MC		 2751 int i;
2752
a216df59 2753 if (!s->server
eee2a6a7 2754 || s->peer_ciphers == NULL
a216df59 2755 || size < 2)
26a7d938 2756 return NULL;
0f113f3e
MC		 2757
2758 p = buf;
eee2a6a7 2759 clntsk = s->peer_ciphers;
a216df59
MC		 2760 srvrsk = SSL_get_ciphers(s);
2761 if (clntsk == NULL || srvrsk == NULL)
2762 return NULL;
0f113f3e 2763
a216df59 2764 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 2765 return NULL;
2766
a216df59 2767 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 2768 int n;
2769
a216df59
MC		 2770 c = sk_SSL_CIPHER_value(clntsk, i);
2771 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2772 continue;
2773
0f113f3e 2774 n = strlen(c->name);
a216df59 2775 if (n + 1 > size) {
0f113f3e
MC		 2776 if (p != buf)
2777 --p;
2778 *p = '\0';
2779 return buf;
2780 }
4cacc9d5 2781 strcpy(p, c->name);
0f113f3e
MC		 2782 p += n;
2783 *(p++) = ':';
a216df59 2784 size -= n + 1;
0f113f3e
MC		 2785 }
2786 p[-1] = '\0';
26a7d938 2787 return buf;
0f113f3e
MC		 2788}
2789
7955c1f1
MC		 2790/**
2791 * Return the requested servername (SNI) value. Note that the behaviour varies
2792 * depending on:
2793 * - whether this is called by the client or the server,
2794 * - if we are before or during/after the handshake,
2795 * - if a resumption or normal handshake is being attempted/has occurred
2796 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2797 *
2798 * Note that only the host_name type is defined (RFC 3546).
ed3883d2 2799 */
f1fd4544 2800const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e 2801{
7955c1f1
MC		 2802 /*
2803 * If we don't know if we are the client or the server yet then we assume
2804 * client.
2805 */
2806 int server = s->handshake_func == NULL ? 0 : s->server;
0f113f3e
MC		 2807 if (type != TLSEXT_NAMETYPE_host_name)
2808 return NULL;
a13c20f6 2809
7955c1f1
MC		 2810 if (server) {
2811 /**
2812 * Server side
2813 * In TLSv1.3 on the server SNI is not associated with the session
2814 * but in TLSv1.2 or below it is.
2815 *
2816 * Before the handshake:
2817 * - return NULL
2818 *
2819 * During/after the handshake (TLSv1.2 or below resumption occurred):
2820 * - If a servername was accepted by the server in the original
2821 * handshake then it will return that servername, or NULL otherwise.
2822 *
2823 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2824 * - The function will return the servername requested by the client in
2825 * this handshake or NULL if none was requested.
2826 */
2827 if (s->hit && !SSL_IS_TLS13(s))
2828 return s->session->ext.hostname;
2829 } else {
2830 /**
2831 * Client side
2832 *
2833 * Before the handshake:
2834 * - If a servername has been set via a call to
2835 * SSL_set_tlsext_host_name() then it will return that servername
2836 * - If one has not been set, but a TLSv1.2 resumption is being
2837 * attempted and the session from the original handshake had a
2838 * servername accepted by the server then it will return that
2839 * servername
2840 * - Otherwise it returns NULL
2841 *
2842 * During/after the handshake (TLSv1.2 or below resumption occurred):
9f7505ab 2843 * - If the session from the original handshake had a servername accepted
7955c1f1
MC		 2844 * by the server then it will return that servername.
2845 * - Otherwise it returns the servername set via
2846 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2847 *
2848 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2849 * - It will return the servername set via SSL_set_tlsext_host_name()
2850 * (or NULL if it was not called).
2851 */
2852 if (SSL_in_before(s)) {
2853 if (s->ext.hostname == NULL
2854 && s->session != NULL
2855 && s->session->ssl_version != TLS1_3_VERSION)
2856 return s->session->ext.hostname;
2857 } else {
2858 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2859 return s->session->ext.hostname;
2860 }
2861 }
2862
328a0547 2863 return s->ext.hostname;
0f113f3e 2864}
ed3883d2 2865
f1fd4544 2866int SSL_get_servername_type(const SSL *s)
0f113f3e 2867{
7955c1f1 2868 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
0f113f3e
MC		 2869 return TLSEXT_NAMETYPE_host_name;
2870 return -1;
2871}
ee2ffc27 2872
0f113f3e
MC		 2873/*
2874 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2875 * expected that this function is called from the callback set by
0f113f3e
MC		 2876 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2877 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2878 * not included in the length. A byte string of length 0 is invalid. No byte
2879 * string may be truncated. The current, but experimental algorithm for
2880 * selecting the protocol is: 1) If the server doesn't support NPN then this
2881 * is indicated to the callback. In this case, the client application has to
2882 * abort the connection or have a default application level protocol. 2) If
2883 * the server supports NPN, but advertises an empty list then the client
f430ba31 2884 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2885 * fallback case was enacted. 3) Otherwise, the client finds the first
2886 * protocol in the server's list that it supports and selects this protocol.
2887 * This is because it's assumed that the server has better information about
2888 * which protocol a client should use. 4) If the client doesn't support any
2889 * of the server's advertised protocols, then this is treated the same as
2890 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2891 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2892 */
0f113f3e
MC		 2893int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2894 const unsigned char *server,
2895 unsigned int server_len,
a230b26e 2896 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2897{
2898 unsigned int i, j;
2899 const unsigned char *result;
2900 int status = OPENSSL_NPN_UNSUPPORTED;
2901
2902 /*
2903 * For each protocol in server preference order, see if we support it.
2904 */
2905 for (i = 0; i < server_len;) {
2906 for (j = 0; j < client_len;) {
2907 if (server[i] == client[j] &&
2908 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2909 /* We found a match */
2910 result = &server[i];
2911 status = OPENSSL_NPN_NEGOTIATED;
2912 goto found;
2913 }
2914 j += client[j];
2915 j++;
2916 }
2917 i += server[i];
2918 i++;
2919 }
2920
2921 /* There's no overlap between our protocols and the server's list. */
2922 result = client;
2923 status = OPENSSL_NPN_NO_OVERLAP;
2924
2925 found:
2926 *out = (unsigned char *)result + 1;
2927 *outlen = result[0];
2928 return status;
2929}
ee2ffc27 2930
e481f9b9 2931#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2932/*
2933 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2934 * client's requested protocol for this connection and returns 0. If the
2935 * client didn't request any protocol, then *data is set to NULL. Note that
2936 * the client can request any protocol it chooses. The value returned from
2937 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2938 * provided by the callback.
2939 */
0f113f3e
MC		 2940void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2941 unsigned *len)
2942{
aff8c126 2943 *data = s->ext.npn;
12a765a5 2944 if (*data == NULL) {
0f113f3e
MC		 2945 *len = 0;
2946 } else {
aff8c126 2947 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2948 }
2949}
2950
2951/*
aff8c126 2952 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2953 * a TLS server needs a list of supported protocols for Next Protocol
2954 * Negotiation. The returned list must be in wire format. The list is
2955 * returned by setting |out| to point to it and |outlen| to its length. This
2956 * memory will not be modified, but one should assume that the SSL* keeps a
2957 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2958 * wishes to advertise. Otherwise, no such extension will be included in the
2959 * ServerHello.
2960 */
aff8c126 2961void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2962 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2963 void *arg)
0f113f3e 2964{
aff8c126
RS		 2965 ctx->ext.npn_advertised_cb = cb;
2966 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2967}
2968
2969/*
2970 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2971 * client needs to select a protocol from the server's provided list. |out|
2972 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2973 * The length of the protocol name must be written into |outlen|. The
2974 * server's advertised protocols are provided in |in| and |inlen|. The
2975 * callback can assume that |in| is syntactically valid. The client must
2976 * select a protocol. It is fatal to the connection if this callback returns
2977 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2978 */
aff8c126 2979void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2980 SSL_CTX_npn_select_cb_func cb,
aff8c126 2981 void *arg)
0f113f3e 2982{
aff8c126
RS		 2983 ctx->ext.npn_select_cb = cb;
2984 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2985}
e481f9b9 2986#endif
a398f821 2987
feba11cf
TS		 2988static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
2989{
2990 unsigned int idx;
2991
2992 if (protos_len < 2 || protos == NULL)
2993 return 0;
2994
2995 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
2996 if (protos[idx] == 0)
2997 return 0;
2998 }
2999 return idx == protos_len;
3000}
0f113f3e
MC		 3001/*
3002 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 3003 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 3004 * length-prefixed strings). Returns 0 on success.
3005 */
3006int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 3007 unsigned int protos_len)
0f113f3e 3008{
feba11cf
TS		 3009 unsigned char *alpn;
3010
3011 if (protos_len == 0 || protos == NULL) {
3012 OPENSSL_free(ctx->ext.alpn);
3013 ctx->ext.alpn = NULL;
39a14059 3014 ctx->ext.alpn_len = 0;
feba11cf
TS		 3015 return 0;
3016 }
3017 /* Not valid per RFC */
3018 if (!alpn_value_ok(protos, protos_len))
3019 return 1;
3020
3021 alpn = OPENSSL_memdup(protos, protos_len);
3022 if (alpn == NULL) {
6849b73c 3023 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3024 return 1;
72e9be3d 3025 }
feba11cf
TS		 3026 OPENSSL_free(ctx->ext.alpn);
3027 ctx->ext.alpn = alpn;
aff8c126 3028 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 3029
3030 return 0;
3031}
3032
3033/*
3034 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 3035 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 3036 * length-prefixed strings). Returns 0 on success.
3037 */
3038int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 3039 unsigned int protos_len)
0f113f3e 3040{
feba11cf
TS		 3041 unsigned char *alpn;
3042
3043 if (protos_len == 0 || protos == NULL) {
3044 OPENSSL_free(ssl->ext.alpn);
3045 ssl->ext.alpn = NULL;
39a14059 3046 ssl->ext.alpn_len = 0;
feba11cf
TS		 3047 return 0;
3048 }
3049 /* Not valid per RFC */
3050 if (!alpn_value_ok(protos, protos_len))
3051 return 1;
3052
3053 alpn = OPENSSL_memdup(protos, protos_len);
3054 if (alpn == NULL) {
6849b73c 3055 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3056 return 1;
72e9be3d 3057 }
feba11cf
TS		 3058 OPENSSL_free(ssl->ext.alpn);
3059 ssl->ext.alpn = alpn;
aff8c126 3060 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 3061
3062 return 0;
3063}
3064
3065/*
3066 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3067 * called during ClientHello processing in order to select an ALPN protocol
3068 * from the client's list of offered protocols.
3069 */
3070void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 3071 SSL_CTX_alpn_select_cb_func cb,
3072 void *arg)
0f113f3e 3073{
aff8c126
RS		 3074 ctx->ext.alpn_select_cb = cb;
3075 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 3076}
3077
3078/*
69687aa8
F		 3079 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3080 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 3081 * (not including the leading length-prefix byte). If the server didn't
3082 * respond with a negotiated protocol then |*len| will be zero.
3083 */
6f017a8f 3084void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 3085 unsigned int *len)
0f113f3e 3086{
555cbb32 3087 *data = ssl->s3.alpn_selected;
0f113f3e
MC		 3088 if (*data == NULL)
3089 *len = 0;
3090 else
555cbb32 3091 *len = (unsigned int)ssl->s3.alpn_selected_len;
0f113f3e
MC		 3092}
3093
74b4b494 3094int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 3095 const char *label, size_t llen,
23cec1f4 3096 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 3097 int use_context)
3098{
dffeec1c
TM		 3099 if (s->session == NULL
3100 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
0f113f3e 3101 return -1;
e0af0405 3102
0f113f3e 3103 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 3104 llen, context,
3105 contextlen, use_context);
0f113f3e 3106}
e0af0405 3107
b38ede80
TT		 3108int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3109 const char *label, size_t llen,
3110 const unsigned char *context,
3111 size_t contextlen)
3112{
3113 if (s->version != TLS1_3_VERSION)
3114 return 0;
3115
3116 return tls13_export_keying_material_early(s, out, olen, label, llen,
3117 context, contextlen);
3118}
3119
3c1d6bbc 3120static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 3121{
bd5d27c1 3122 const unsigned char *session_id = a->session_id;
0f113f3e 3123 unsigned long l;
bd5d27c1
DB		 3124 unsigned char tmp_storage[4];
3125
3126 if (a->session_id_length < sizeof(tmp_storage)) {
3127 memset(tmp_storage, 0, sizeof(tmp_storage));
3128 memcpy(tmp_storage, a->session_id, a->session_id_length);
3129 session_id = tmp_storage;
3130 }
0f113f3e
MC		 3131
3132 l = (unsigned long)
bd5d27c1
DB		 3133 ((unsigned long)session_id[0]) |
3134 ((unsigned long)session_id[1] << 8L) |
3135 ((unsigned long)session_id[2] << 16L) |
3136 ((unsigned long)session_id[3] << 24L);
26a7d938 3137 return l;
0f113f3e
MC		 3138}
3139
3140/*
3141 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3142 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3143 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3144 * being able to construct an SSL_SESSION that will collide with any existing
3145 * session with a matching session ID.
3146 */
3147static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3148{
3149 if (a->ssl_version != b->ssl_version)
208fb891 3150 return 1;
0f113f3e 3151 if (a->session_id_length != b->session_id_length)
208fb891 3152 return 1;
26a7d938 3153 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3154}
3155
3156/*
3157 * These wrapper functions should remain rather than redeclaring
d0fa136c 3158 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3159 * variable. The reason is that the functions aren't static, they're exposed
3160 * via ssl.h.
3161 */
97b17195 3162
b4250010 3163SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
d8652be0 3164 const SSL_METHOD *meth)
0f113f3e
MC		 3165{
3166 SSL_CTX *ret = NULL;
3167
3168 if (meth == NULL) {
6849b73c 3169 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3170 return NULL;
0f113f3e
MC		 3171 }
3172
0fc32b07
MC		 3173 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3174 return NULL;
7fa792d1 3175
0f113f3e 3176 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
6849b73c 3177 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
0f113f3e
MC		 3178 goto err;
3179 }
b51bce94 3180 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3181 if (ret == NULL)
3182 goto err;
3183
ba18627e
MC		 3184 ret->libctx = libctx;
3185 if (propq != NULL) {
3186 ret->propq = OPENSSL_strdup(propq);
3187 if (ret->propq == NULL)
3188 goto err;
3189 }
3190
0f113f3e 3191 ret->method = meth;
7946ab33
KR		 3192 ret->min_proto_version = 0;
3193 ret->max_proto_version = 0;
693cf80c 3194 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3195 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3196 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3197 /* We take the system default. */
0f113f3e 3198 ret->session_timeout = meth->get_timeout();
0f113f3e 3199 ret->references = 1;
16203f7b
AG		 3200 ret->lock = CRYPTO_THREAD_lock_new();
3201 if (ret->lock == NULL) {
6849b73c 3202 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
16203f7b
AG		 3203 OPENSSL_free(ret);
3204 return NULL;
3205 }
0f113f3e 3206 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3207 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3208 if ((ret->cert = ssl_cert_new()) == NULL)
3209 goto err;
3210
62d0577e 3211 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3212 if (ret->sessions == NULL)
3213 goto err;
3214 ret->cert_store = X509_STORE_new();
3215 if (ret->cert_store == NULL)
3216 goto err;
ed29e82a 3217#ifndef OPENSSL_NO_CT
d8652be0 3218 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
ed29e82a
RP		 3219 if (ret->ctlog_store == NULL)
3220 goto err;
3221#endif
f865b081 3222
c8f6c28a
MC		 3223 /* initialize cipher/digest methods table */
3224 if (!ssl_load_ciphers(ret))
075b1f2f 3225 goto err2;
263ff2c9
MC		 3226 /* initialise sig algs */
3227 if (!ssl_setup_sig_algs(ret))
3228 goto err2;
3229
c8f6c28a 3230
9d2d857f
MC		 3231 if (!ssl_load_groups(ret))
3232 goto err2;
3233
5d120511 3234 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
f865b081
MC		 3235 goto err;
3236
a68eee67 3237 if (!ssl_create_cipher_list(ret,
f865b081 3238 ret->tls13_ciphersuites,
a230b26e 3239 &ret->cipher_list, &ret->cipher_list_by_id,
5d120511 3240 OSSL_default_cipher_list(), ret->cert)
a230b26e 3241 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
6849b73c 3242 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
0f113f3e
MC		 3243 goto err2;
3244 }
3245
3246 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3247 if (ret->param == NULL)
0f113f3e
MC		 3248 goto err;
3249
c8f6c28a
MC		 3250 /*
3251 * If these aren't available from the provider we'll get NULL returns.
3252 * That's fine but will cause errors later if SSLv3 is negotiated
3253 */
3254 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3255 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
0f113f3e 3256
fa7c2637 3257 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3258 goto err;
3259
98732979
MC		 3260 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3261 goto err;
3262
25a807bc
F		 3263 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3264 goto err;
0f113f3e 3265
4bfb96f2
TS		 3266 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3267 goto err;
3268
0f113f3e
MC		 3269 /* No compression for DTLS */
3270 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3271 ret->comp_methods = SSL_COMP_get_compression_methods();
3272
3273 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3274 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3275
4e2e1ec9 3276 /* Setup RFC5077 ticket keys */
8f21260b
MC		 3277 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3278 sizeof(ret->ext.tick_key_name)) <= 0)
3279 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3280 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3281 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3282 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
0f113f3e 3283 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3284
8f21260b
MC		 3285 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3286 sizeof(ret->ext.cookie_hmac_key)) <= 0)
43054d3d
MC		 3287 goto err;
3288
edc032b5 3289#ifndef OPENSSL_NO_SRP
76cb077f 3290 if (!ssl_ctx_srp_ctx_init_intern(ret))
69f68237 3291 goto err;
edc032b5 3292#endif
4db9677b 3293#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3294# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3295# define eng_strx(x) #x
3296# define eng_str(x) eng_strx(x)
3297 /* Use specific client engine automatically... ignore errors */
3298 {
3299 ENGINE *eng;
3300 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3301 if (!eng) {
3302 ERR_clear_error();
3303 ENGINE_load_builtin_engines();
3304 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3305 }
3306 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3307 ERR_clear_error();
3308 }
3309# endif
3310#endif
3311 /*
3312 * Default is to connect to non-RI servers. When RI is more widely
3313 * deployed might change this.
3314 */
3315 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3316 /*
3317 * Disable compression by default to prevent CRIME. Applications can
3318 * re-enable compression by configuring
3319 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3320 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3321 * middlebox compatibility by default. This may be disabled by default in
3322 * a later OpenSSL version.
dc5744cb 3323 */
a5816a5a 3324 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3325
aff8c126 3326 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3327
bfa9a9af 3328 /*
c39e4048
BK		 3329 * We cannot usefully set a default max_early_data here (which gets
3330 * propagated in SSL_new(), for the following reason: setting the
3331 * SSL field causes tls_construct_stoc_early_data() to tell the
3332 * client that early data will be accepted when constructing a TLS 1.3
3333 * session ticket, and the client will accordingly send us early data
3334 * when using that ticket (if the client has early data to send).
3335 * However, in order for the early data to actually be consumed by
3336 * the application, the application must also have calls to
3337 * SSL_read_early_data(); otherwise we'll just skip past the early data
3338 * and ignore it. So, since the application must add calls to
3339 * SSL_read_early_data(), we also require them to add
3340 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3341 * eliminating the bandwidth-wasting early data in the case described
3342 * above.
bfa9a9af 3343 */
c39e4048 3344 ret->max_early_data = 0;
bfa9a9af 3345
4e8548e8
MC		 3346 /*
3347 * Default recv_max_early_data is a fully loaded single record. Could be
3348 * split across multiple records in practice. We set this differently to
3349 * max_early_data so that, in the default case, we do not advertise any
3350 * support for early_data, but if a client were to send us some (e.g.
3351 * because of an old, stale ticket) then we will tolerate it and skip over
3352 * it.
3353 */
3354 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3355
36ff232c
MC		 3356 /* By default we send two session tickets automatically in TLSv1.3 */
3357 ret->num_tickets = 2;
9d0a8bb7 3358
8a5ed9dc
TM		 3359 ssl_ctx_system_config(ret);
3360
16203f7b 3361 return ret;
0f113f3e 3362 err:
6849b73c 3363 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3364 err2:
e0e920b1 3365 SSL_CTX_free(ret);
16203f7b 3366 return NULL;
0f113f3e 3367}
d02b48c6 3368
ba18627e
MC		 3369SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3370{
d8652be0 3371 return SSL_CTX_new_ex(NULL, NULL, meth);
ba18627e
MC		 3372}
3373
c5ebfcab 3374int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3375{
16203f7b 3376 int i;
c5ebfcab 3377
2f545ae4 3378 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3379 return 0;
3380
3381 REF_PRINT_COUNT("SSL_CTX", ctx);
3382 REF_ASSERT_ISNT(i < 2);
3383 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3384}
3385
4f43d0e7 3386void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3387{
3388 int i;
9d2d857f 3389 size_t j;
d02b48c6 3390
0f113f3e
MC		 3391 if (a == NULL)
3392 return;
d02b48c6 3393
2f545ae4 3394 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3395 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3396 if (i > 0)
3397 return;
f3f1cf84 3398 REF_ASSERT_ISNT(i < 0);
0f113f3e 3399
222561fe 3400 X509_VERIFY_PARAM_free(a->param);
919ba009 3401 dane_ctx_final(&a->dane);
0f113f3e
MC		 3402
3403 /*
3404 * Free internal session cache. However: the remove_cb() may reference
3405 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3406 * after the sessions were flushed.
3407 * As the ex_data handling routines might also touch the session cache,
3408 * the most secure solution seems to be: empty (flush) the cache, then
3409 * free ex_data, then finally free the cache.
3410 * (See ticket [openssl.org #212].)
3411 */
3412 if (a->sessions != NULL)
3413 SSL_CTX_flush_sessions(a, 0);
3414
3415 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3416 lh_SSL_SESSION_free(a->sessions);
222561fe 3417 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3418#ifndef OPENSSL_NO_CT
3419 CTLOG_STORE_free(a->ctlog_store);
3420#endif
25aaa98a
RS		 3421 sk_SSL_CIPHER_free(a->cipher_list);
3422 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3423 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3424 ssl_cert_free(a->cert);
fa7c2637 3425 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3426 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
222561fe 3427 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3428 a->comp_methods = NULL;
e783bae2 3429#ifndef OPENSSL_NO_SRTP
25aaa98a 3430 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3431#endif
edc032b5 3432#ifndef OPENSSL_NO_SRP
76cb077f 3433 ssl_ctx_srp_ctx_free_intern(a);
edc032b5 3434#endif
bdfe932d 3435#ifndef OPENSSL_NO_ENGINE
301fcb28 3436 tls_engine_finish(a->client_cert_engine);
ddac1974 3437#endif
8671b898 3438
aff8c126 3439 OPENSSL_free(a->ext.ecpointformats);
187753e0 3440 OPENSSL_free(a->ext.supportedgroups);
ddf8f1ce 3441 OPENSSL_free(a->ext.supported_groups_default);
aff8c126 3442 OPENSSL_free(a->ext.alpn);
4bfb96f2 3443 OPENSSL_secure_free(a->ext.secure);
8671b898 3444
c8f6c28a
MC		 3445 ssl_evp_md_free(a->md5);
3446 ssl_evp_md_free(a->sha1);
3447
9d2d857f
MC		 3448 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3449 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3450 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3451 ssl_evp_md_free(a->ssl_digest_methods[j]);
3452 for (j = 0; j < a->group_list_len; j++) {
3453 OPENSSL_free(a->group_list[j].tlsname);
3454 OPENSSL_free(a->group_list[j].realname);
3455 OPENSSL_free(a->group_list[j].algorithm);
3456 }
3457 OPENSSL_free(a->group_list);
c8f6c28a 3458
263ff2c9
MC		 3459 OPENSSL_free(a->sigalg_lookup_cache);
3460
16203f7b
AG		 3461 CRYPTO_THREAD_lock_free(a->lock);
3462
ba18627e
MC		 3463 OPENSSL_free(a->propq);
3464
0f113f3e
MC		 3465 OPENSSL_free(a);
3466}
d02b48c6 3467
3ae76679 3468void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3469{
3470 ctx->default_passwd_callback = cb;
3471}
3472
3473void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3474{
3475 ctx->default_passwd_callback_userdata = u;
3476}
3477
0c452abc
CH		 3478pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3479{
3480 return ctx->default_passwd_callback;
3481}
3482
3483void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3484{
3485 return ctx->default_passwd_callback_userdata;
3486}
3487
a974e64a
MC		 3488void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3489{
3490 s->default_passwd_callback = cb;
3491}
3492
3493void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3494{
3495 s->default_passwd_callback_userdata = u;
3496}
3497
0c452abc
CH		 3498pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3499{
3500 return s->default_passwd_callback;
3501}
3502
3503void *SSL_get_default_passwd_cb_userdata(SSL *s)
3504{
3505 return s->default_passwd_callback_userdata;
3506}
3507
0f113f3e
MC		 3508void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3509 int (*cb) (X509_STORE_CTX *, void *),
3510 void *arg)
3511{
3512 ctx->app_verify_callback = cb;
3513 ctx->app_verify_arg = arg;
3514}
3515
3516void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3517 int (*cb) (int, X509_STORE_CTX *))
3518{
3519 ctx->verify_mode = mode;
3520 ctx->default_verify_callback = cb;
3521}
3522
3523void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3524{
3525 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3526}
3527
a230b26e 3528void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3529{
3530 ssl_cert_set_cert_cb(c->cert, cb, arg);
3531}
3532
3533void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3534{
3535 ssl_cert_set_cert_cb(s->cert, cb, arg);
3536}
18d71588 3537
2cf28d61 3538void ssl_set_masks(SSL *s)
0f113f3e 3539{
6383d316 3540 CERT *c = s->cert;
555cbb32 3541 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 3542 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3543 unsigned long mask_k, mask_a;
361a1191 3544 int have_ecc_cert, ecdsa_ok;
462f4f4b 3545
0f113f3e
MC		 3546 if (c == NULL)
3547 return;
d02b48c6 3548
13c45372 3549 dh_tmp = (c->dh_tmp != NULL
13c45372 3550 || c->dh_tmp_cb != NULL
13c45372 3551 || c->dh_tmp_auto);
d02b48c6 3552
d0ff28f8 3553 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3554 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3555 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
6383d316 3556 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
0f113f3e
MC		 3557 mask_k = 0;
3558 mask_a = 0;
0e1dba93 3559
77359d22
RL		 3560 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3561 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 3562
2a9b9654 3563#ifndef OPENSSL_NO_GOST
4020c0b3 3564 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
5a5530a2 3565 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3566 mask_a |= SSL_aGOST12;
3567 }
4020c0b3 3568 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
5a5530a2 3569 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3570 mask_a |= SSL_aGOST12;
3571 }
4020c0b3 3572 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3573 mask_k |= SSL_kGOST;
3574 mask_a |= SSL_aGOST01;
3575 }
2a9b9654 3576#endif
0f113f3e 3577
361a1191 3578 if (rsa_enc)
0f113f3e 3579 mask_k |= SSL_kRSA;
d02b48c6 3580
0f113f3e
MC		 3581 if (dh_tmp)
3582 mask_k |= SSL_kDHE;
d02b48c6 3583
6aaa29fb
DSH		 3584 /*
3585 * If we only have an RSA-PSS certificate allow RSA authentication
3586 * if TLS 1.2 and peer supports it.
3587 */
3588
3589 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3590 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3591 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3592 mask_a |= SSL_aRSA;
d02b48c6 3593
0f113f3e
MC		 3594 if (dsa_sign) {
3595 mask_a |= SSL_aDSS;
0f113f3e 3596 }
d02b48c6 3597
0f113f3e 3598 mask_a |= SSL_aNULL;
d02b48c6 3599
0f113f3e
MC		 3600 /*
3601 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3602 * depending on the key usage extension.
3603 */
0f113f3e 3604 if (have_ecc_cert) {
a8d8e06b 3605 uint32_t ex_kusage;
4020c0b3 3606 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3607 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3608 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3609 ecdsa_ok = 0;
c7c46256 3610 if (ecdsa_ok)
0f113f3e 3611 mask_a |= SSL_aECDSA;
0f113f3e 3612 }
b2021556
DSH		 3613 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3614 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3615 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3616 && TLS1_get_version(s) == TLS1_2_VERSION)
3617 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3618
3619 /* Allow Ed448 for TLS 1.2 if peer supports it */
3620 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3621 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3622 && TLS1_get_version(s) == TLS1_2_VERSION)
3623 mask_a |= SSL_aECDSA;
ea262260 3624
fe6ef247 3625 mask_k |= SSL_kECDHE;
ddac1974
NL		 3626
3627#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3628 mask_k |= SSL_kPSK;
3629 mask_a |= SSL_aPSK;
526f94ad
DSH		 3630 if (mask_k & SSL_kRSA)
3631 mask_k |= SSL_kRSAPSK;
3632 if (mask_k & SSL_kDHE)
3633 mask_k |= SSL_kDHEPSK;
3634 if (mask_k & SSL_kECDHE)
3635 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3636#endif
3637
555cbb32
TS		 3638 s->s3.tmp.mask_k = mask_k;
3639 s->s3.tmp.mask_a = mask_a;
0f113f3e 3640}
d02b48c6 3641
a2f9200f 3642int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3643{
555cbb32 3644 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3645 /* key usage, if present, must allow signing */
ce0c1f2b 3646 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
6849b73c 3647 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
0f113f3e
MC		 3648 return 0;
3649 }
3650 }
0f113f3e
MC		 3651 return 1; /* all checks are ok */
3652}
ea262260 3653
a398f821 3654int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3655 size_t *serverinfo_length)
3656{
555cbb32 3657 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 3658 *serverinfo_length = 0;
3659
a497cf25 3660 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3661 return 0;
3662
a497cf25
DSH		 3663 *serverinfo = cpk->serverinfo;
3664 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3665 return 1;
3666}
0f113f3e
MC		 3667
3668void ssl_update_cache(SSL *s, int mode)
3669{
3670 int i;
3671
3672 /*
3673 * If the session_id_length is 0, we are not supposed to cache it, and it
3674 * would be rather hard to do anyway :-)
3675 */
3676 if (s->session->session_id_length == 0)
3677 return;
3678
d316cdcf
BK		 3679 /*
3680 * If sid_ctx_length is 0 there is no specific application context
3681 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 3682 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3683 * indication that this is actually a session for the proper application
3684 * context, and the *handshake* will fail, not just the resumption attempt.
3685 * Do not cache (on the server) these sessions that are not resumable
3686 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 3687 */
c4fa1f7f 3688 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 3689 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3690 return;
3691
0f113f3e 3692 i = s->session_ctx->session_cache_mode;
5d61491c 3693 if ((i & mode) != 0
ee94ec2e
MC		 3694 && (!s->hit || SSL_IS_TLS13(s))) {
3695 /*
3696 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 3697 * normally don't do this because by default it's a full stateless ticket
3698 * with only a dummy session id so there is no reason to cache it,
3699 * unless:
ee94ec2e
MC		 3700 * - we are doing early_data, in which case we cache so that we can
3701 * detect replays
3702 * - the application has set a remove_session_cb so needs to know about
3703 * session timeout events
6cc0b3c2 3704 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 3705 */
3706 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3707 && (!SSL_IS_TLS13(s)
3708 || !s->server
5d263fb7
MC		 3709 || (s->max_early_data > 0
3710 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 3711 || s->session_ctx->remove_session_cb != NULL
3712 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 3713 SSL_CTX_add_session(s->session_ctx, s->session);
3714
3715 /*
3716 * Add the session to the external cache. We do this even in server side
3717 * TLSv1.3 without early data because some applications just want to
3718 * know about the creation of a session and aren't doing a full cache.
3719 */
3720 if (s->session_ctx->new_session_cb != NULL) {
3721 SSL_SESSION_up_ref(s->session);
3722 if (!s->session_ctx->new_session_cb(s, s->session))
3723 SSL_SESSION_free(s->session);
3724 }
0f113f3e
MC		 3725 }
3726
3727 /* auto flush every 255 connections */
3728 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 3729 TSAN_QUALIFIER int *stat;
1fcb4e4d
BK		 3730 if (mode & SSL_SESS_CACHE_CLIENT)
3731 stat = &s->session_ctx->stats.sess_connect_good;
3732 else
3733 stat = &s->session_ctx->stats.sess_accept_good;
9ef9088c 3734 if ((tsan_load(stat) & 0xff) == 0xff)
0f113f3e 3735 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3736 }
3737}
d02b48c6 3738
3499327b 3739const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 3740{
3741 return ctx->method;
3742}
ba168244 3743
3499327b 3744const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 3745{
26a7d938 3746 return s->method;
0f113f3e 3747}
d02b48c6 3748
4ebb342f 3749int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3750{
0f113f3e
MC		 3751 int ret = 1;
3752
3753 if (s->method != meth) {
919ba009 3754 const SSL_METHOD *sm = s->method;
a230b26e 3755 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3756
919ba009 3757 if (sm->version == meth->version)
0f113f3e
MC		 3758 s->method = meth;
3759 else {
919ba009 3760 sm->ssl_free(s);
0f113f3e
MC		 3761 s->method = meth;
3762 ret = s->method->ssl_new(s);
3763 }
3764
919ba009 3765 if (hf == sm->ssl_connect)
0f113f3e 3766 s->handshake_func = meth->ssl_connect;
919ba009 3767 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3768 s->handshake_func = meth->ssl_accept;
3769 }
26a7d938 3770 return ret;
0f113f3e
MC		 3771}
3772
3773int SSL_get_error(const SSL *s, int i)
3774{
3775 int reason;
3776 unsigned long l;
3777 BIO *bio;
3778
3779 if (i > 0)
26a7d938 3780 return SSL_ERROR_NONE;
0f113f3e
MC		 3781
3782 /*
3783 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3784 * where we do encode the error
3785 */
3786 if ((l = ERR_peek_error()) != 0) {
3787 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3788 return SSL_ERROR_SYSCALL;
0f113f3e 3789 else
26a7d938 3790 return SSL_ERROR_SSL;
0f113f3e
MC		 3791 }
3792
8051ab2b
MC		 3793 if (SSL_want_read(s)) {
3794 bio = SSL_get_rbio(s);
3795 if (BIO_should_read(bio))
26a7d938 3796 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3797 else if (BIO_should_write(bio))
3798 /*
3799 * This one doesn't make too much sense ... We never try to write
3800 * to the rbio, and an application program where rbio and wbio
3801 * are separate couldn't even know what it should wait for.
3802 * However if we ever set s->rwstate incorrectly (so that we have
3803 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3804 * wbio *are* the same, this test works around that bug; so it
3805 * might be safer to keep it.
3806 */
26a7d938 3807 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3808 else if (BIO_should_io_special(bio)) {
3809 reason = BIO_get_retry_reason(bio);
3810 if (reason == BIO_RR_CONNECT)
26a7d938 3811 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3812 else if (reason == BIO_RR_ACCEPT)
26a7d938 3813 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3814 else
26a7d938 3815 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3816 }
8051ab2b 3817 }
0f113f3e 3818
8051ab2b 3819 if (SSL_want_write(s)) {
69687aa8 3820 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3821 bio = s->wbio;
3822 if (BIO_should_write(bio))
26a7d938 3823 return SSL_ERROR_WANT_WRITE;
8051ab2b 3824 else if (BIO_should_read(bio))
2e7dc7cd 3825 /*
8051ab2b 3826 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3827 */
26a7d938 3828 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3829 else if (BIO_should_io_special(bio)) {
3830 reason = BIO_get_retry_reason(bio);
3831 if (reason == BIO_RR_CONNECT)
26a7d938 3832 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3833 else if (reason == BIO_RR_ACCEPT)
26a7d938 3834 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3835 else
26a7d938 3836 return SSL_ERROR_SYSCALL;
0f113f3e 3837 }
07bbc92c 3838 }
6b1bb98f 3839 if (SSL_want_x509_lookup(s))
26a7d938 3840 return SSL_ERROR_WANT_X509_LOOKUP;
0c3eb279
DDO		 3841 if (SSL_want_retry_verify(s))
3842 return SSL_ERROR_WANT_RETRY_VERIFY;
6b1bb98f 3843 if (SSL_want_async(s))
8051ab2b 3844 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3845 if (SSL_want_async_job(s))
8051ab2b 3846 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3847 if (SSL_want_client_hello_cb(s))
3848 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3849
3850 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
555cbb32 3851 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3852 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3853
26a7d938 3854 return SSL_ERROR_SYSCALL;
0f113f3e 3855}
d02b48c6 3856
add2f5ca
MC		 3857static int ssl_do_handshake_intern(void *vargs)
3858{
3859 struct ssl_async_args *args;
3860 SSL *s;
3861
3862 args = (struct ssl_async_args *)vargs;
3863 s = args->s;
3864
3865 return s->handshake_func(s);
3866}
3867
4f43d0e7 3868int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3869{
3870 int ret = 1;
3871
3872 if (s->handshake_func == NULL) {
6849b73c 3873 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3874 return -1;
0f113f3e
MC		 3875 }
3876
3eaa4170 3877 ossl_statem_check_finish_init(s, -1);
49e7fe12 3878
c7f47786 3879 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 3880
3881 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3882 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3883 struct ssl_async_args args;
3884
3885 args.s = s;
3886
7fecbf6f 3887 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3888 } else {
3889 ret = s->handshake_func(s);
3890 }
0f113f3e 3891 }
add2f5ca 3892 return ret;
0f113f3e
MC		 3893}
3894
4f43d0e7 3895void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3896{
3897 s->server = 1;
3898 s->shutdown = 0;
fe3a3291 3899 ossl_statem_clear(s);
0f113f3e 3900 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3901 clear_ciphers(s);
0f113f3e 3902}
d02b48c6 3903
4f43d0e7 3904void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3905{
3906 s->server = 0;
3907 s->shutdown = 0;
fe3a3291 3908 ossl_statem_clear(s);
0f113f3e 3909 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3910 clear_ciphers(s);
0f113f3e 3911}
d02b48c6 3912
4f43d0e7 3913int ssl_undefined_function(SSL *s)
0f113f3e 3914{
6849b73c 3915 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3916 return 0;
0f113f3e 3917}
d02b48c6 3918
41a15c4f 3919int ssl_undefined_void_function(void)
0f113f3e 3920{
6849b73c 3921 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3922 return 0;
0f113f3e 3923}
41a15c4f 3924
0821bcd4 3925int ssl_undefined_const_function(const SSL *s)
0f113f3e 3926{
26a7d938 3927 return 0;
0f113f3e 3928}
0821bcd4 3929
2b8fa1d5 3930const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e 3931{
6849b73c 3932 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3933 return NULL;
0f113f3e 3934}
d02b48c6 3935
3eb2aff4 3936const char *ssl_protocol_to_string(int version)
7d650072 3937{
2abacef1
MC		 3938 switch(version)
3939 {
3940 case TLS1_3_VERSION:
582a17d6 3941 return "TLSv1.3";
2abacef1
MC		 3942
3943 case TLS1_2_VERSION:
7d650072 3944 return "TLSv1.2";
2abacef1
MC		 3945
3946 case TLS1_1_VERSION:
7d650072 3947 return "TLSv1.1";
2abacef1
MC		 3948
3949 case TLS1_VERSION:
ee3a6c64 3950 return "TLSv1";
2abacef1
MC		 3951
3952 case SSL3_VERSION:
7d650072 3953 return "SSLv3";
2abacef1
MC		 3954
3955 case DTLS1_BAD_VER:
7d650072 3956 return "DTLSv0.9";
2abacef1
MC		 3957
3958 case DTLS1_VERSION:
7d650072 3959 return "DTLSv1";
2abacef1
MC		 3960
3961 case DTLS1_2_VERSION:
7d650072 3962 return "DTLSv1.2";
2abacef1
MC		 3963
3964 default:
3965 return "unknown";
3966 }
0f113f3e 3967}
d02b48c6 3968
7d650072
KR		 3969const char *SSL_get_version(const SSL *s)
3970{
3eb2aff4 3971 return ssl_protocol_to_string(s->version);
7d650072
KR		 3972}
3973
98732979 3974static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 3975{
3976 STACK_OF(X509_NAME) *sk;
3977 X509_NAME *xn;
98732979
MC		 3978 int i;
3979
3980 if (src == NULL) {
3981 *dst = NULL;
3982 return 1;
3983 }
3984
3985 if ((sk = sk_X509_NAME_new_null()) == NULL)
3986 return 0;
3987 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3988 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3989 if (xn == NULL) {
3990 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3991 return 0;
3992 }
3993 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3994 X509_NAME_free(xn);
3995 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3996 return 0;
3997 }
3998 }
3999 *dst = sk;
4000
4001 return 1;
4002}
4003
4004SSL *SSL_dup(SSL *s)
4005{
0f113f3e
MC		 4006 SSL *ret;
4007 int i;
4008
919ba009
VD		 4009 /* If we're not quiescent, just up_ref! */
4010 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 4011 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 4012 return s;
4013 }
4014
4015 /*
4016 * Otherwise, copy configuration state, and session if set.
4017 */
0f113f3e 4018 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 4019 return NULL;
0f113f3e 4020
0f113f3e 4021 if (s->session != NULL) {
919ba009
VD		 4022 /*
4023 * Arranges to share the same session via up_ref. This "copies"
4024 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4025 */
61986d32 4026 if (!SSL_copy_session_id(ret, s))
17dd65e6 4027 goto err;
0f113f3e
MC		 4028 } else {
4029 /*
4030 * No session has been established yet, so we have to expect that
4031 * s->cert or ret->cert will be changed later -- they should not both
4032 * point to the same object, and thus we can't use
4033 * SSL_copy_session_id.
4034 */
919ba009
VD		 4035 if (!SSL_set_ssl_method(ret, s->method))
4036 goto err;
0f113f3e
MC		 4037
4038 if (s->cert != NULL) {
e0e920b1 4039 ssl_cert_free(ret->cert);
0f113f3e
MC		 4040 ret->cert = ssl_cert_dup(s->cert);
4041 if (ret->cert == NULL)
4042 goto err;
4043 }
4044
348240c6
MC		 4045 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4046 (int)s->sid_ctx_length))
69f68237 4047 goto err;
0f113f3e
MC		 4048 }
4049
9f6b22b8
VD		 4050 if (!ssl_dane_dup(ret, s))
4051 goto err;
919ba009 4052 ret->version = s->version;
0f113f3e 4053 ret->options = s->options;
f12dd991
MC		 4054 ret->min_proto_version = s->min_proto_version;
4055 ret->max_proto_version = s->max_proto_version;
0f113f3e
MC		 4056 ret->mode = s->mode;
4057 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4058 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4059 ret->msg_callback = s->msg_callback;
4060 ret->msg_callback_arg = s->msg_callback_arg;
4061 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4062 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4063 ret->generate_session_id = s->generate_session_id;
4064
4065 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4066
0f113f3e
MC		 4067 /* copy app data, a little dangerous perhaps */
4068 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4069 goto err;
4070
0f113f3e 4071 ret->server = s->server;
919ba009
VD		 4072 if (s->handshake_func) {
4073 if (s->server)
4074 SSL_set_accept_state(ret);
4075 else
4076 SSL_set_connect_state(ret);
4077 }
0f113f3e 4078 ret->shutdown = s->shutdown;
0f113f3e
MC		 4079 ret->hit = s->hit;
4080
a974e64a
MC		 4081 ret->default_passwd_callback = s->default_passwd_callback;
4082 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4083
0f113f3e
MC		 4084 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4085
4086 /* dup the cipher_list and cipher_list_by_id stacks */
4087 if (s->cipher_list != NULL) {
4088 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4089 goto err;
4090 }
4091 if (s->cipher_list_by_id != NULL)
4092 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4093 == NULL)
4094 goto err;
4095
4096 /* Dup the client_CA list */
98732979
MC		 4097 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4098 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4099 goto err;
4100
66696478 4101 return ret;
0f113f3e 4102
0f113f3e 4103 err:
66696478
RS		 4104 SSL_free(ret);
4105 return NULL;
0f113f3e 4106}
d02b48c6 4107
4f43d0e7 4108void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 4109{
4110 if (s->enc_read_ctx != NULL) {
846ec07d 4111 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 4112 s->enc_read_ctx = NULL;
4113 }
4114 if (s->enc_write_ctx != NULL) {
846ec07d 4115 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 4116 s->enc_write_ctx = NULL;
4117 }
09b6c2ef 4118#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 4119 COMP_CTX_free(s->expand);
4120 s->expand = NULL;
4121 COMP_CTX_free(s->compress);
4122 s->compress = NULL;
0f113f3e
MC		 4123#endif
4124}
d02b48c6 4125
0821bcd4 4126X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 4127{
4128 if (s->cert != NULL)
26a7d938 4129 return s->cert->key->x509;
0f113f3e 4130 else
26a7d938 4131 return NULL;
0f113f3e 4132}
d02b48c6 4133
a25f9adc 4134EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 4135{
4136 if (s->cert != NULL)
26a7d938 4137 return s->cert->key->privatekey;
0f113f3e 4138 else
26a7d938 4139 return NULL;
0f113f3e 4140}
d02b48c6 4141
a25f9adc 4142X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 4143{
4144 if (ctx->cert != NULL)
4145 return ctx->cert->key->x509;
4146 else
4147 return NULL;
4148}
a25f9adc
DSH		 4149
4150EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4151{
4152 if (ctx->cert != NULL)
4153 return ctx->cert->key->privatekey;
4154 else
4155 return NULL;
4156}
a25f9adc 4157
babb3798 4158const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 4159{
4160 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 4161 return s->session->cipher;
4162 return NULL;
0f113f3e
MC		 4163}
4164
0aed6e44
BK		 4165const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4166{
555cbb32 4167 return s->s3.tmp.new_cipher;
0aed6e44
BK		 4168}
4169
3499327b 4170const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4171{
9a555706
RS		 4172#ifndef OPENSSL_NO_COMP
4173 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4174#else
4175 return NULL;
4176#endif
0f113f3e 4177}
377dcdba 4178
3499327b 4179const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4180{
9a555706
RS		 4181#ifndef OPENSSL_NO_COMP
4182 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4183#else
4184 return NULL;
0f113f3e 4185#endif
9a555706 4186}
0f113f3e 4187
46417569 4188int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 4189{
4190 BIO *bbio;
4191
2e7dc7cd
MC		 4192 if (s->bbio != NULL) {
4193 /* Already buffered. */
4194 return 1;
0f113f3e 4195 }
46417569 4196
2e7dc7cd
MC		 4197 bbio = BIO_new(BIO_f_buffer());
4198 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4199 BIO_free(bbio);
6849b73c 4200 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
46417569 4201 return 0;
0f113f3e 4202 }
2e7dc7cd
MC		 4203 s->bbio = bbio;
4204 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 4205
4206 return 1;
0f113f3e 4207}
413c4f45 4208
b77f3ed1 4209int ssl_free_wbio_buffer(SSL *s)
0f113f3e 4210{
62adbcee 4211 /* callers ensure s is never null */
0f113f3e 4212 if (s->bbio == NULL)
b77f3ed1 4213 return 1;
0f113f3e 4214
2e7dc7cd 4215 s->wbio = BIO_pop(s->wbio);
0f113f3e
MC		 4216 BIO_free(s->bbio);
4217 s->bbio = NULL;
b77f3ed1
MC		 4218
4219 return 1;
0f113f3e
MC		 4220}
4221
4222void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4223{
4224 ctx->quiet_shutdown = mode;
4225}
58964a49 4226
0821bcd4 4227int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4228{
26a7d938 4229 return ctx->quiet_shutdown;
0f113f3e 4230}
58964a49 4231
0f113f3e
MC		 4232void SSL_set_quiet_shutdown(SSL *s, int mode)
4233{
4234 s->quiet_shutdown = mode;
4235}
58964a49 4236
0821bcd4 4237int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4238{
26a7d938 4239 return s->quiet_shutdown;
0f113f3e 4240}
58964a49 4241
0f113f3e
MC		 4242void SSL_set_shutdown(SSL *s, int mode)
4243{
4244 s->shutdown = mode;
4245}
58964a49 4246
0821bcd4 4247int SSL_get_shutdown(const SSL *s)
0f113f3e 4248{
6546e9b2 4249 return s->shutdown;
0f113f3e 4250}
58964a49 4251
0821bcd4 4252int SSL_version(const SSL *s)
0f113f3e 4253{
6546e9b2
AG		 4254 return s->version;
4255}
4256
4257int SSL_client_version(const SSL *s)
4258{
4259 return s->client_version;
0f113f3e 4260}
58964a49 4261
0821bcd4 4262SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4263{
6546e9b2 4264 return ssl->ctx;
0f113f3e
MC		 4265}
4266
4267SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4268{
24a0d393 4269 CERT *new_cert;
0f113f3e
MC		 4270 if (ssl->ctx == ctx)
4271 return ssl->ctx;
0f113f3e 4272 if (ctx == NULL)
222da979 4273 ctx = ssl->session_ctx;
24a0d393
KR		 4274 new_cert = ssl_cert_dup(ctx->cert);
4275 if (new_cert == NULL) {
4276 return NULL;
0f113f3e 4277 }
21181889
MC		 4278
4279 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4280 ssl_cert_free(new_cert);
4281 return NULL;
4282 }
4283
24a0d393
KR		 4284 ssl_cert_free(ssl->cert);
4285 ssl->cert = new_cert;
0f113f3e
MC		 4286
4287 /*
4288 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4289 * so setter APIs must prevent invalid lengths from entering the system.
4290 */
380a522f
MC		 4291 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4292 return NULL;
0f113f3e
MC		 4293
4294 /*
4295 * If the session ID context matches that of the parent SSL_CTX,
4296 * inherit it from the new SSL_CTX as well. If however the context does
4297 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4298 * leave it unchanged.
4299 */
4300 if ((ssl->ctx != NULL) &&
4301 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4302 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4303 ssl->sid_ctx_length = ctx->sid_ctx_length;
4304 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4305 }
4306
16203f7b 4307 SSL_CTX_up_ref(ctx);
a230b26e 4308 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4309 ssl->ctx = ctx;
4310
16203f7b 4311 return ssl->ctx;
0f113f3e 4312}
ed3883d2 4313
4f43d0e7 4314int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4315{
d8652be0
MC		 4316 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4317 ctx->propq);
0f113f3e 4318}
58964a49 4319
d84a7b20
MC		 4320int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4321{
4322 X509_LOOKUP *lookup;
4323
4324 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4325 if (lookup == NULL)
4326 return 0;
6dcb100f
RL		 4327
4328 /* We ignore errors, in case the directory doesn't exist */
4329 ERR_set_mark();
4330
d84a7b20
MC		 4331 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4332
6dcb100f 4333 ERR_pop_to_mark();
d84a7b20
MC		 4334
4335 return 1;
4336}
4337
4338int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4339{
4340 X509_LOOKUP *lookup;
4341
4342 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4343 if (lookup == NULL)
4344 return 0;
4345
492bc359 4346 /* We ignore errors, in case the file doesn't exist */
6dcb100f
RL		 4347 ERR_set_mark();
4348
d8652be0
MC		 4349 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4350 ctx->propq);
d84a7b20 4351
6dcb100f
RL		 4352 ERR_pop_to_mark();
4353
4354 return 1;
4355}
4356
4357int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4358{
4359 X509_LOOKUP *lookup;
4360
4361 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4362 if (lookup == NULL)
4363 return 0;
4364
4365 /* We ignore errors, in case the directory doesn't exist */
4366 ERR_set_mark();
4367
d8652be0 4368 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
6dcb100f
RL		 4369
4370 ERR_pop_to_mark();
d84a7b20
MC		 4371
4372 return 1;
4373}
4374
6dcb100f
RL		 4375int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4376{
d8652be0
MC		 4377 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4378 ctx->propq);
6dcb100f
RL		 4379}
4380
4381int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4382{
4383 return X509_STORE_load_path(ctx->cert_store, CApath);
4384}
4385
4386int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4387{
d8652be0
MC		 4388 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
4389 ctx->propq);
6dcb100f
RL		 4390}
4391
303c0028 4392int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4393 const char *CApath)
4394{
6dcb100f
RL		 4395 if (CAfile == NULL && CApath == NULL)
4396 return 0;
4397 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4398 return 0;
4399 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4400 return 0;
4401 return 1;
0f113f3e 4402}
58964a49 4403
45d87a1f 4404void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4405 void (*cb) (const SSL *ssl, int type, int val))
4406{
4407 ssl->info_callback = cb;
4408}
4409
4410/*
4411 * One compiler (Diab DCC) doesn't like argument names in returned function
4412 * pointer.
4413 */
4414void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4415 int /* type */ ,
4416 int /* val */ ) {
4417 return ssl->info_callback;
4418}
58964a49 4419
0f113f3e
MC		 4420void SSL_set_verify_result(SSL *ssl, long arg)
4421{
4422 ssl->verify_result = arg;
4423}
58964a49 4424
0821bcd4 4425long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4426{
26a7d938 4427 return ssl->verify_result;
0f113f3e
MC		 4428}
4429
d9f1c639 4430size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4431{
6b8f5d0d 4432 if (outlen == 0)
555cbb32
TS		 4433 return sizeof(ssl->s3.client_random);
4434 if (outlen > sizeof(ssl->s3.client_random))
4435 outlen = sizeof(ssl->s3.client_random);
4436 memcpy(out, ssl->s3.client_random, outlen);
d9f1c639 4437 return outlen;
858618e7
NM		 4438}
4439
d9f1c639 4440size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4441{
6b8f5d0d 4442 if (outlen == 0)
555cbb32
TS		 4443 return sizeof(ssl->s3.server_random);
4444 if (outlen > sizeof(ssl->s3.server_random))
4445 outlen = sizeof(ssl->s3.server_random);
4446 memcpy(out, ssl->s3.server_random, outlen);
d9f1c639 4447 return outlen;
858618e7
NM		 4448}
4449
d9f1c639 4450size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4451 unsigned char *out, size_t outlen)
858618e7 4452{
d9f1c639
MC		 4453 if (outlen == 0)
4454 return session->master_key_length;
8c1a5343 4455 if (outlen > session->master_key_length)
858618e7
NM		 4456 outlen = session->master_key_length;
4457 memcpy(out, session->master_key, outlen);
d9f1c639 4458 return outlen;
858618e7
NM		 4459}
4460
725b0f1e 4461int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4462 size_t len)
4463{
4464 if (len > sizeof(sess->master_key))
4465 return 0;
4466
4467 memcpy(sess->master_key, in, len);
4468 sess->master_key_length = len;
911d63f2
MC		 4469 return 1;
4470}
4471
4472
0f113f3e
MC		 4473int SSL_set_ex_data(SSL *s, int idx, void *arg)
4474{
26a7d938 4475 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4476}
4477
4478void *SSL_get_ex_data(const SSL *s, int idx)
4479{
26a7d938 4480 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4481}
4482
0f113f3e
MC		 4483int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4484{
26a7d938 4485 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4486}
4487
4488void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4489{
26a7d938 4490 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4491}
58964a49 4492
0821bcd4 4493X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4494{
26a7d938 4495 return ctx->cert_store;
0f113f3e 4496}
413c4f45 4497
0f113f3e
MC		 4498void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4499{
222561fe 4500 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4501 ctx->cert_store = store;
4502}
413c4f45 4503
b50052db
TS		 4504void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4505{
4506 if (store != NULL)
4507 X509_STORE_up_ref(store);
4508 SSL_CTX_set_cert_store(ctx, store);
4509}
4510
0821bcd4 4511int SSL_want(const SSL *s)
0f113f3e 4512{
26a7d938 4513 return s->rwstate;
0f113f3e 4514}
413c4f45 4515
ddac1974
NL		 4516#ifndef OPENSSL_NO_PSK
4517int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4518{
4519 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 4520 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4521 return 0;
4522 }
df6da24b 4523 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4524 if (identity_hint != NULL) {
7644a9ae 4525 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4526 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4527 return 0;
4528 } else
df6da24b 4529 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4530 return 1;
4531}
ddac1974
NL		 4532
4533int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4534{
4535 if (s == NULL)
4536 return 0;
4537
0f113f3e 4538 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 4539 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4540 return 0;
4541 }
df6da24b 4542 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4543 if (identity_hint != NULL) {
7644a9ae 4544 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4545 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4546 return 0;
4547 } else
df6da24b 4548 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4549 return 1;
4550}
ddac1974
NL		 4551
4552const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4553{
4554 if (s == NULL || s->session == NULL)
4555 return NULL;
26a7d938 4556 return s->session->psk_identity_hint;
0f113f3e 4557}
ddac1974
NL		 4558
4559const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4560{
4561 if (s == NULL || s->session == NULL)
4562 return NULL;
26a7d938 4563 return s->session->psk_identity;
0f113f3e 4564}
7806f3dd 4565
8cbfcc70 4566void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4567{
4568 s->psk_client_callback = cb;
4569}
7806f3dd 4570
8cbfcc70 4571void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4572{
4573 ctx->psk_client_callback = cb;
4574}
7806f3dd 4575
8cbfcc70 4576void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4577{
4578 s->psk_server_callback = cb;
4579}
7806f3dd 4580
8cbfcc70 4581void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4582{
4583 ctx->psk_server_callback = cb;
4584}
4585#endif
4586
f46184bd
MC		 4587void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4588{
4589 s->psk_find_session_cb = cb;
4590}
4591
4592void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4593 SSL_psk_find_session_cb_func cb)
4594{
4595 ctx->psk_find_session_cb = cb;
4596}
4597
4598void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4599{
4600 s->psk_use_session_cb = cb;
4601}
4602
4603void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4604 SSL_psk_use_session_cb_func cb)
4605{
4606 ctx->psk_use_session_cb = cb;
4607}
4608
0f113f3e
MC		 4609void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4610 void (*cb) (int write_p, int version,
4611 int content_type, const void *buf,
4612 size_t len, SSL *ssl, void *arg))
4613{
4614 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4615}
4616
4617void SSL_set_msg_callback(SSL *ssl,
4618 void (*cb) (int write_p, int version,
4619 int content_type, const void *buf,
4620 size_t len, SSL *ssl, void *arg))
4621{
4622 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4623}
a661b653 4624
7c2d4fee 4625void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4626 int (*cb) (SSL *ssl,
4627 int
4628 is_forward_secure))
4629{
4630 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4631 (void (*)(void))cb);
4632}
4633
7c2d4fee 4634void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4635 int (*cb) (SSL *ssl,
4636 int is_forward_secure))
4637{
4638 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4639 (void (*)(void))cb);
4640}
4641
c649d10d
TS		 4642void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4643 size_t (*cb) (SSL *ssl, int type,
4644 size_t len, void *arg))
4645{
4646 ctx->record_padding_cb = cb;
4647}
4648
4649void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4650{
4651 ctx->record_padding_arg = arg;
4652}
4653
3499327b 4654void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 4655{
4656 return ctx->record_padding_arg;
4657}
4658
4659int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4660{
4661 /* block size of 0 or 1 is basically no padding */
4662 if (block_size == 1)
4663 ctx->block_padding = 0;
4664 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4665 ctx->block_padding = block_size;
4666 else
4667 return 0;
4668 return 1;
4669}
4670
a6d36303 4671int SSL_set_record_padding_callback(SSL *ssl,
c649d10d
TS		 4672 size_t (*cb) (SSL *ssl, int type,
4673 size_t len, void *arg))
4674{
a6d36303
VF		 4675 BIO *b;
4676
4677 b = SSL_get_wbio(ssl);
4678 if (b == NULL || !BIO_get_ktls_send(b)) {
4679 ssl->record_padding_cb = cb;
4680 return 1;
4681 }
4682 return 0;
c649d10d
TS		 4683}
4684
4685void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4686{
4687 ssl->record_padding_arg = arg;
4688}
4689
3499327b 4690void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d
TS		 4691{
4692 return ssl->record_padding_arg;
4693}
4694
4695int SSL_set_block_padding(SSL *ssl, size_t block_size)
4696{
4697 /* block size of 0 or 1 is basically no padding */
4698 if (block_size == 1)
4699 ssl->block_padding = 0;
4700 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4701 ssl->block_padding = block_size;
4702 else
4703 return 0;
4704 return 1;
4705}
4706
9d0a8bb7
MC		 4707int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4708{
4709 s->num_tickets = num_tickets;
4710
4711 return 1;
4712}
4713
3499327b 4714size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7
MC		 4715{
4716 return s->num_tickets;
4717}
4718
4719int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4720{
4721 ctx->num_tickets = num_tickets;
4722
4723 return 1;
4724}
4725
3499327b 4726size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 4727{
4728 return ctx->num_tickets;
4729}
4730
0f113f3e
MC		 4731/*
4732 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4733 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4734 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4735 * Returns the newly allocated ctx;
8671b898 4736 */
b948e2c5 4737
0f113f3e 4738EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4739{
0f113f3e 4740 ssl_clear_hash_ctx(hash);
bfb0641f 4741 *hash = EVP_MD_CTX_new();
5f3d93e4 4742 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4743 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4744 *hash = NULL;
4745 return NULL;
4746 }
0f113f3e 4747 return *hash;
b948e2c5 4748}
0f113f3e
MC		 4749
4750void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4751{
4752
0d9824c1 4753 EVP_MD_CTX_free(*hash);
0f113f3e 4754 *hash = NULL;
b948e2c5 4755}
a661b653 4756
48fbcbac 4757/* Retrieve handshake hashes */
8c1a5343
MC		 4758int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4759 size_t *hashlen)
48fbcbac 4760{
6e59a892 4761 EVP_MD_CTX *ctx = NULL;
555cbb32 4762 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
8c1a5343
MC		 4763 int hashleni = EVP_MD_CTX_size(hdgst);
4764 int ret = 0;
4765
f63a17d6 4766 if (hashleni < 0 || (size_t)hashleni > outlen) {
c48ffbcc 4767 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
28ba2541 4768 goto err;
f63a17d6 4769 }
8c1a5343 4770
bfb0641f 4771 ctx = EVP_MD_CTX_new();
8c1a5343 4772 if (ctx == NULL)
6e59a892 4773 goto err;
8c1a5343 4774
6e59a892 4775 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6 4776 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
c48ffbcc 4777 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
8c1a5343 4778 goto err;
f63a17d6 4779 }
8c1a5343
MC		 4780
4781 *hashlen = hashleni;
4782
4783 ret = 1;
48fbcbac 4784 err:
bfb0641f 4785 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4786 return ret;
4787}
4788
c04b66b1 4789int SSL_session_reused(const SSL *s)
0f113f3e
MC		 4790{
4791 return s->hit;
4792}
08557cf2 4793
69443116 4794int SSL_is_server(const SSL *s)
0f113f3e
MC		 4795{
4796 return s->server;
4797}
87adf1fa 4798
00db8c60 4799#ifndef OPENSSL_NO_DEPRECATED_1_1_0
47153c72
RS		 4800void SSL_set_debug(SSL *s, int debug)
4801{
4802 /* Old function was do-nothing anyway... */
4803 (void)s;
4804 (void)debug;
4805}
4806#endif
4807
b362ccab 4808void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4809{
4810 s->cert->sec_level = level;
4811}
b362ccab
DSH		 4812
4813int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4814{
4815 return s->cert->sec_level;
4816}
b362ccab 4817
0f113f3e 4818void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4819 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4820 int op, int bits, int nid,
4821 void *other, void *ex))
0f113f3e
MC		 4822{
4823 s->cert->sec_cb = cb;
4824}
b362ccab 4825
a230b26e
EK		 4826int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4827 const SSL_CTX *ctx, int op,
4828 int bits, int nid, void *other,
4829 void *ex) {
0f113f3e
MC		 4830 return s->cert->sec_cb;
4831}
b362ccab
DSH		 4832
4833void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4834{
4835 s->cert->sec_ex = ex;
4836}
b362ccab
DSH		 4837
4838void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4839{
4840 return s->cert->sec_ex;
4841}
b362ccab
DSH		 4842
4843void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4844{
4845 ctx->cert->sec_level = level;
4846}
b362ccab
DSH		 4847
4848int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4849{
4850 return ctx->cert->sec_level;
4851}
b362ccab 4852
0f113f3e 4853void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4854 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4855 int op, int bits, int nid,
4856 void *other, void *ex))
0f113f3e
MC		 4857{
4858 ctx->cert->sec_cb = cb;
4859}
b362ccab 4860
e4646a89
KR		 4861int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4862 const SSL_CTX *ctx,
0f113f3e
MC		 4863 int op, int bits,
4864 int nid,
4865 void *other,
4866 void *ex) {
4867 return ctx->cert->sec_cb;
4868}
b362ccab
DSH		 4869
4870void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4871{
4872 ctx->cert->sec_ex = ex;
4873}
b362ccab
DSH		 4874
4875void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4876{
4877 return ctx->cert->sec_ex;
4878}
b362ccab 4879
8106cb8b
VD		 4880/*
4881 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4882 * can return unsigned long, instead of the generic long return value from the
4883 * control interface.
4884 */
4885unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4886{
4887 return ctx->options;
4888}
a230b26e
EK		 4889
4890unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4891{
4892 return s->options;
4893}
a230b26e 4894
8106cb8b
VD		 4895unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4896{
4897 return ctx->options |= op;
4898}
a230b26e 4899
8106cb8b
VD		 4900unsigned long SSL_set_options(SSL *s, unsigned long op)
4901{
4902 return s->options |= op;
4903}
a230b26e 4904
8106cb8b
VD		 4905unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4906{
4907 return ctx->options &= ~op;
4908}
a230b26e 4909
8106cb8b
VD		 4910unsigned long SSL_clear_options(SSL *s, unsigned long op)
4911{
4912 return s->options &= ~op;
4913}
4914
696178ed
DSH		 4915STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4916{
4917 return s->verified_chain;
4918}
4919
0f113f3e 4920IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4921
4922#ifndef OPENSSL_NO_CT
4923
4924/*
4925 * Moves SCTs from the |src| stack to the |dst| stack.
4926 * The source of each SCT will be set to |origin|.
4927 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4928 * the caller.
4929 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4930 */
a230b26e
EK		 4931static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4932 sct_source_t origin)
ed29e82a
RP		 4933{
4934 int scts_moved = 0;
4935 SCT *sct = NULL;
4936
4937 if (*dst == NULL) {
4938 *dst = sk_SCT_new_null();
4939 if (*dst == NULL) {
6849b73c 4940 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 4941 goto err;
4942 }
4943 }
4944
4945 while ((sct = sk_SCT_pop(src)) != NULL) {
4946 if (SCT_set_source(sct, origin) != 1)
4947 goto err;
4948
4949 if (sk_SCT_push(*dst, sct) <= 0)
4950 goto err;
4951 scts_moved += 1;
4952 }
4953
4954 return scts_moved;
a230b26e 4955 err:
ed29e82a 4956 if (sct != NULL)
a230b26e 4957 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4958 return -1;
ed29e82a
RP		 4959}
4960
4961/*
a230b26e 4962 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4963 * Returns the number of SCTs extracted.
a230b26e 4964 */
ed29e82a
RP		 4965static int ct_extract_tls_extension_scts(SSL *s)
4966{
4967 int scts_extracted = 0;
4968
aff8c126
RS		 4969 if (s->ext.scts != NULL) {
4970 const unsigned char *p = s->ext.scts;
4971 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4972
4973 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4974
4975 SCT_LIST_free(scts);
4976 }
4977
4978 return scts_extracted;
4979}
4980
4981/*
4982 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4983 * contains an SCT X509 extension. They will be stored in |s->scts|.
4984 * Returns:
4985 * - The number of SCTs extracted, assuming an OCSP response exists.
4986 * - 0 if no OCSP response exists or it contains no SCTs.
4987 * - A negative integer if an error occurs.
4988 */
4989static int ct_extract_ocsp_response_scts(SSL *s)
4990{
a230b26e 4991# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4992 int scts_extracted = 0;
4993 const unsigned char *p;
4994 OCSP_BASICRESP *br = NULL;
4995 OCSP_RESPONSE *rsp = NULL;
4996 STACK_OF(SCT) *scts = NULL;
4997 int i;
4998
aff8c126 4999 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 5000 goto err;
5001
aff8c126
RS		 5002 p = s->ext.ocsp.resp;
5003 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 5004 if (rsp == NULL)
5005 goto err;
5006
5007 br = OCSP_response_get1_basic(rsp);
5008 if (br == NULL)
5009 goto err;
5010
5011 for (i = 0; i < OCSP_resp_count(br); ++i) {
5012 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5013
5014 if (single == NULL)
5015 continue;
5016
a230b26e
EK		 5017 scts =
5018 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5019 scts_extracted =
5020 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 5021 if (scts_extracted < 0)
5022 goto err;
5023 }
a230b26e 5024 err:
ed29e82a
RP		 5025 SCT_LIST_free(scts);
5026 OCSP_BASICRESP_free(br);
5027 OCSP_RESPONSE_free(rsp);
5028 return scts_extracted;
a230b26e 5029# else
3e41ac35
MC		 5030 /* Behave as if no OCSP response exists */
5031 return 0;
a230b26e 5032# endif
ed29e82a
RP		 5033}
5034
5035/*
5036 * Attempts to extract SCTs from the peer certificate.
5037 * Return the number of SCTs extracted, or a negative integer if an error
5038 * occurs.
5039 */
5040static int ct_extract_x509v3_extension_scts(SSL *s)
5041{
5042 int scts_extracted = 0;
3f3c7d26 5043 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 5044
5045 if (cert != NULL) {
5046 STACK_OF(SCT) *scts =
5047 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5048
5049 scts_extracted =
5050 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5051
5052 SCT_LIST_free(scts);
5053 }
5054
5055 return scts_extracted;
5056}
5057
5058/*
5059 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5060 * response (if it exists) and X509v3 extensions in the certificate.
5061 * Returns NULL if an error occurs.
5062 */
5063const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5064{
5065 if (!s->scts_parsed) {
5066 if (ct_extract_tls_extension_scts(s) < 0 ||
5067 ct_extract_ocsp_response_scts(s) < 0 ||
5068 ct_extract_x509v3_extension_scts(s) < 0)
5069 goto err;
5070
5071 s->scts_parsed = 1;
5072 }
5073 return s->scts;
a230b26e 5074 err:
ed29e82a
RP		 5075 return NULL;
5076}
5077
a230b26e 5078static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 5079 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 5080{
43341433
VD		 5081 return 1;
5082}
5083
a230b26e 5084static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 5085 const STACK_OF(SCT) *scts, void *unused_arg)
5086{
5087 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5088 int i;
ed29e82a 5089
43341433
VD		 5090 for (i = 0; i < count; ++i) {
5091 SCT *sct = sk_SCT_value(scts, i);
5092 int status = SCT_get_validation_status(sct);
5093
5094 if (status == SCT_VALIDATION_STATUS_VALID)
5095 return 1;
5096 }
6849b73c 5097 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
43341433
VD		 5098 return 0;
5099}
5100
5101int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5102 void *arg)
5103{
ed29e82a
RP		 5104 /*
5105 * Since code exists that uses the custom extension handler for CT, look
5106 * for this and throw an error if they have already registered to use CT.
5107 */
5108 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 5109 TLSEXT_TYPE_signed_certificate_timestamp))
5110 {
6849b73c 5111 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5112 return 0;
ed29e82a
RP		 5113 }
5114
ed29e82a 5115 if (callback != NULL) {
a230b26e
EK		 5116 /*
5117 * If we are validating CT, then we MUST accept SCTs served via OCSP
5118 */
ed29e82a 5119 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 5120 return 0;
ed29e82a
RP		 5121 }
5122
43341433
VD		 5123 s->ct_validation_callback = callback;
5124 s->ct_validation_callback_arg = arg;
5125
5126 return 1;
ed29e82a
RP		 5127}
5128
43341433 5129int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 5130 ssl_ct_validation_cb callback, void *arg)
ed29e82a 5131{
ed29e82a
RP		 5132 /*
5133 * Since code exists that uses the custom extension handler for CT, look for
5134 * this and throw an error if they have already registered to use CT.
5135 */
5136 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 5137 TLSEXT_TYPE_signed_certificate_timestamp))
5138 {
6849b73c 5139 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5140 return 0;
ed29e82a
RP		 5141 }
5142
5143 ctx->ct_validation_callback = callback;
5144 ctx->ct_validation_callback_arg = arg;
43341433 5145 return 1;
ed29e82a
RP		 5146}
5147
43341433 5148int SSL_ct_is_enabled(const SSL *s)
ed29e82a 5149{
43341433 5150 return s->ct_validation_callback != NULL;
ed29e82a
RP		 5151}
5152
43341433 5153int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 5154{
43341433 5155 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 5156}
5157
4d482ee2 5158int ssl_validate_ct(SSL *s)
ed29e82a
RP		 5159{
5160 int ret = 0;
3f3c7d26 5161 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 5162 X509 *issuer;
b9aec69a 5163 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 5164 CT_POLICY_EVAL_CTX *ctx = NULL;
5165 const STACK_OF(SCT) *scts;
5166
43341433
VD		 5167 /*
5168 * If no callback is set, the peer is anonymous, or its chain is invalid,
5169 * skip SCT validation - just return success. Applications that continue
5170 * handshakes without certificates, with unverified chains, or pinned leaf
5171 * certificates are outside the scope of the WebPKI and CT.
5172 *
5173 * The above exclusions notwithstanding the vast majority of peers will
5174 * have rather ordinary certificate chains validated by typical
5175 * applications that perform certificate verification and therefore will
5176 * process SCTs when enabled.
5177 */
5178 if (s->ct_validation_callback == NULL || cert == NULL ||
5179 s->verify_result != X509_V_OK ||
a230b26e 5180 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 5181 return 1;
5182
43341433
VD		 5183 /*
5184 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5185 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5186 */
5187 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5188 switch (dane->mtlsa->usage) {
5189 case DANETLS_USAGE_DANE_TA:
5190 case DANETLS_USAGE_DANE_EE:
5191 return 1;
5192 }
ed29e82a
RP		 5193 }
5194
d8652be0 5195 ctx = CT_POLICY_EVAL_CTX_new_ex(s->ctx->libctx, s->ctx->propq);
ed29e82a 5196 if (ctx == NULL) {
c48ffbcc 5197 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 5198 goto end;
5199 }
5200
43341433 5201 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 5202 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5203 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5204 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 5205 CT_POLICY_EVAL_CTX_set_time(
5206 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 5207
5208 scts = SSL_get0_peer_scts(s);
5209
43341433
VD		 5210 /*
5211 * This function returns success (> 0) only when all the SCTs are valid, 0
5212 * when some are invalid, and < 0 on various internal errors (out of
5213 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5214 * reason to abort the handshake, that decision is up to the callback.
5215 * Therefore, we error out only in the unexpected case that the return
5216 * value is negative.
5217 *
5218 * XXX: One might well argue that the return value of this function is an
f430ba31 5219 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 5220 * status of each of the provided SCTs. So long as it correctly separates
5221 * the wheat from the chaff it should return success. Failure in this case
5222 * ought to correspond to an inability to carry out its duties.
5223 */
5224 if (SCT_LIST_validate(scts, ctx) < 0) {
c48ffbcc 5225 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 5226 goto end;
5227 }
5228
5229 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5230 if (ret < 0)
a230b26e 5231 ret = 0; /* This function returns 0 on failure */
f63a17d6 5232 if (!ret)
c48ffbcc 5233 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
ed29e82a 5234
a230b26e 5235 end:
ed29e82a 5236 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 5237 /*
5238 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5239 * failure return code here. Also the application may wish the complete
5240 * the handshake, and then disconnect cleanly at a higher layer, after
5241 * checking the verification status of the completed connection.
5242 *
5243 * We therefore force a certificate verification failure which will be
5244 * visible via SSL_get_verify_result() and cached as part of any resumed
5245 * session.
5246 *
5247 * Note: the permissive callback is for information gathering only, always
5248 * returns success, and does not affect verification status. Only the
5249 * strict callback or a custom application-specified callback can trigger
5250 * connection failure or record a verification error.
5251 */
5252 if (ret <= 0)
5253 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 5254 return ret;
5255}
5256
43341433
VD		 5257int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5258{
5259 switch (validation_mode) {
5260 default:
6849b73c 5261 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 5262 return 0;
5263 case SSL_CT_VALIDATION_PERMISSIVE:
5264 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5265 case SSL_CT_VALIDATION_STRICT:
5266 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5267 }
5268}
5269
5270int SSL_enable_ct(SSL *s, int validation_mode)
5271{
5272 switch (validation_mode) {
5273 default:
6849b73c 5274 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 5275 return 0;
5276 case SSL_CT_VALIDATION_PERMISSIVE:
5277 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5278 case SSL_CT_VALIDATION_STRICT:
5279 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5280 }
5281}
5282
ed29e82a
RP		 5283int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5284{
328f36c5 5285 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 5286}
5287
5288int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5289{
5290 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5291}
5292
a230b26e 5293void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 5294{
5295 CTLOG_STORE_free(ctx->ctlog_store);
5296 ctx->ctlog_store = logs;
5297}
5298
5299const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5300{
5301 return ctx->ctlog_store;
5302}
5303
6b1bb98f
BK		 5304#endif /* OPENSSL_NO_CT */
5305
a9c0d8be
DB		 5306void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5307 void *arg)
6b1bb98f 5308{
a9c0d8be
DB		 5309 c->client_hello_cb = cb;
5310 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 5311}
5312
a9c0d8be 5313int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 5314{
5315 if (s->clienthello == NULL)
5316 return 0;
5317 return s->clienthello->isv2;
5318}
5319
a9c0d8be 5320unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 5321{
5322 if (s->clienthello == NULL)
5323 return 0;
5324 return s->clienthello->legacy_version;
5325}
5326
a9c0d8be 5327size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5328{
5329 if (s->clienthello == NULL)
5330 return 0;
5331 if (out != NULL)
5332 *out = s->clienthello->random;
5333 return SSL3_RANDOM_SIZE;
5334}
5335
a9c0d8be 5336size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5337{
5338 if (s->clienthello == NULL)
5339 return 0;
5340 if (out != NULL)
5341 *out = s->clienthello->session_id;
5342 return s->clienthello->session_id_len;
5343}
5344
a9c0d8be 5345size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5346{
5347 if (s->clienthello == NULL)
5348 return 0;
5349 if (out != NULL)
5350 *out = PACKET_data(&s->clienthello->ciphersuites);
5351 return PACKET_remaining(&s->clienthello->ciphersuites);
5352}
5353
a9c0d8be 5354size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5355{
5356 if (s->clienthello == NULL)
5357 return 0;
5358 if (out != NULL)
5359 *out = s->clienthello->compressions;
5360 return s->clienthello->compressions_len;
5361}
5362
a9c0d8be 5363int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5364{
5365 RAW_EXTENSION *ext;
5366 int *present;
5367 size_t num = 0, i;
5368
5369 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5370 return 0;
5371 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5372 ext = s->clienthello->pre_proc_exts + i;
5373 if (ext->present)
5374 num++;
5375 }
6fda11ae 5376 if (num == 0) {
5377 *out = NULL;
5378 *outlen = 0;
5379 return 1;
5380 }
cdb10bae 5381 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6849b73c 5382 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
193b5d76 5383 return 0;
cdb10bae 5384 }
193b5d76
BK		 5385 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5386 ext = s->clienthello->pre_proc_exts + i;
5387 if (ext->present) {
5388 if (ext->received_order >= num)
5389 goto err;
5390 present[ext->received_order] = ext->type;
5391 }
5392 }
5393 *out = present;
5394 *outlen = num;
5395 return 1;
5396 err:
5397 OPENSSL_free(present);
5398 return 0;
5399}
5400
a9c0d8be 5401int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5402 size_t *outlen)
5403{
5404 size_t i;
5405 RAW_EXTENSION *r;
5406
5407 if (s->clienthello == NULL)
5408 return 0;
5409 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5410 r = s->clienthello->pre_proc_exts + i;
5411 if (r->present && r->type == type) {
5412 if (out != NULL)
5413 *out = PACKET_data(&r->data);
5414 if (outlen != NULL)
5415 *outlen = PACKET_remaining(&r->data);
5416 return 1;
5417 }
5418 }
5419 return 0;
5420}
2faa1b48 5421
a58eb06d
TS		 5422int SSL_free_buffers(SSL *ssl)
5423{
5424 RECORD_LAYER *rl = &ssl->rlayer;
5425
5426 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5427 return 0;
5428
5429 RECORD_LAYER_release(rl);
5430 return 1;
5431}
5432
5433int SSL_alloc_buffers(SSL *ssl)
5434{
5435 return ssl3_setup_buffers(ssl);
5436}
5437
2faa1b48
CB		 5438void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5439{
5440 ctx->keylog_callback = cb;
5441}
5442
5443SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5444{
5445 return ctx->keylog_callback;
5446}
5447
5448static int nss_keylog_int(const char *prefix,
5449 SSL *ssl,
5450 const uint8_t *parameter_1,
5451 size_t parameter_1_len,
5452 const uint8_t *parameter_2,
5453 size_t parameter_2_len)
5454{
5455 char *out = NULL;
5456 char *cursor = NULL;
5457 size_t out_len = 0;
5458 size_t i;
5459 size_t prefix_len;
5460
20870286
P		 5461 if (ssl->ctx->keylog_callback == NULL)
5462 return 1;
2faa1b48
CB		 5463
5464 /*
5465 * Our output buffer will contain the following strings, rendered with
5466 * space characters in between, terminated by a NULL character: first the
5467 * prefix, then the first parameter, then the second parameter. The
5468 * meaning of each parameter depends on the specific key material being
5469 * logged. Note that the first and second parameters are encoded in
5470 * hexadecimal, so we need a buffer that is twice their lengths.
5471 */
5472 prefix_len = strlen(prefix);
e931f370 5473 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
2faa1b48 5474 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
c48ffbcc 5475 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5476 return 0;
5477 }
5478
5479 strcpy(cursor, prefix);
5480 cursor += prefix_len;
5481 *cursor++ = ' ';
5482
5483 for (i = 0; i < parameter_1_len; i++) {
5484 sprintf(cursor, "%02x", parameter_1[i]);
5485 cursor += 2;
5486 }
5487 *cursor++ = ' ';
5488
5489 for (i = 0; i < parameter_2_len; i++) {
5490 sprintf(cursor, "%02x", parameter_2[i]);
5491 cursor += 2;
5492 }
5493 *cursor = '\0';
5494
5495 ssl->ctx->keylog_callback(ssl, (const char *)out);
e931f370 5496 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 5497 return 1;
5498
5499}
5500
5501int ssl_log_rsa_client_key_exchange(SSL *ssl,
5502 const uint8_t *encrypted_premaster,
5503 size_t encrypted_premaster_len,
5504 const uint8_t *premaster,
5505 size_t premaster_len)
5506{
5507 if (encrypted_premaster_len < 8) {
c48ffbcc 5508 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5509 return 0;
5510 }
5511
f0deb4d3 5512 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5513 return nss_keylog_int("RSA",
5514 ssl,
5515 encrypted_premaster,
f0deb4d3 5516 8,
2faa1b48
CB		 5517 premaster,
5518 premaster_len);
5519}
5520
2c7bd692
CB		 5521int ssl_log_secret(SSL *ssl,
5522 const char *label,
5523 const uint8_t *secret,
5524 size_t secret_len)
2faa1b48 5525{
2c7bd692 5526 return nss_keylog_int(label,
2faa1b48 5527 ssl,
555cbb32 5528 ssl->s3.client_random,
2c7bd692
CB		 5529 SSL3_RANDOM_SIZE,
5530 secret,
5531 secret_len);
2faa1b48
CB		 5532}
5533
ccb8e6e0
BK		 5534#define SSLV2_CIPHER_LEN 3
5535
f63a17d6 5536int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5537{
ccb8e6e0 5538 int n;
ccb8e6e0
BK		 5539
5540 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5541
5542 if (PACKET_remaining(cipher_suites) == 0) {
c48ffbcc 5543 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5544 return 0;
ccb8e6e0
BK		 5545 }
5546
5547 if (PACKET_remaining(cipher_suites) % n != 0) {
c48ffbcc 5548 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5549 return 0;
ccb8e6e0
BK		 5550 }
5551
555cbb32
TS		 5552 OPENSSL_free(s->s3.tmp.ciphers_raw);
5553 s->s3.tmp.ciphers_raw = NULL;
5554 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5555
5556 if (sslv2format) {
5557 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5558 PACKET sslv2ciphers = *cipher_suites;
5559 unsigned int leadbyte;
5560 unsigned char *raw;
5561
5562 /*
5563 * We store the raw ciphers list in SSLv3+ format so we need to do some
5564 * preprocessing to convert the list first. If there are any SSLv2 only
5565 * ciphersuites with a non-zero leading byte then we are going to
5566 * slightly over allocate because we won't store those. But that isn't a
5567 * problem.
5568 */
5569 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 5570 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 5571 if (raw == NULL) {
c48ffbcc 5572 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 5573 return 0;
ccb8e6e0 5574 }
555cbb32 5575 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5576 PACKET_remaining(&sslv2ciphers) > 0;
5577 raw += TLS_CIPHER_LEN) {
5578 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5579 || (leadbyte == 0
5580 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5581 TLS_CIPHER_LEN))
5582 || (leadbyte != 0
5583 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
c48ffbcc 5584 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
555cbb32
TS		 5585 OPENSSL_free(s->s3.tmp.ciphers_raw);
5586 s->s3.tmp.ciphers_raw = NULL;
5587 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 5588 return 0;
ccb8e6e0
BK		 5589 }
5590 if (leadbyte == 0)
555cbb32 5591 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 5592 }
555cbb32
TS		 5593 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5594 &s->s3.tmp.ciphers_rawlen)) {
c48ffbcc 5595 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
f63a17d6 5596 return 0;
ccb8e6e0 5597 }
90134d98 5598 return 1;
90134d98
BK		 5599}
5600
5601int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5602 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5603 STACK_OF(SSL_CIPHER) **scsvs)
5604{
90134d98
BK		 5605 PACKET pkt;
5606
5607 if (!PACKET_buf_init(&pkt, bytes, len))
5608 return 0;
f63a17d6 5609 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5610}
5611
5612int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5613 STACK_OF(SSL_CIPHER) **skp,
5614 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5615 int sslv2format, int fatal)
90134d98
BK		 5616{
5617 const SSL_CIPHER *c;
5618 STACK_OF(SSL_CIPHER) *sk = NULL;
5619 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5620 int n;
5621 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5622 unsigned char cipher[SSLV2_CIPHER_LEN];
5623
5624 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5625
5626 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6 5627 if (fatal)
c48ffbcc 5628 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
f63a17d6 5629 else
6849b73c 5630 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5631 return 0;
5632 }
5633
5634 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5635 if (fatal)
c48ffbcc 5636 SSLfatal(s, SSL_AD_DECODE_ERROR,
f63a17d6
MC		 5637 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5638 else
6849b73c 5639 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5640 return 0;
5641 }
5642
5643 sk = sk_SSL_CIPHER_new_null();
5644 scsvs = sk_SSL_CIPHER_new_null();
5645 if (sk == NULL || scsvs == NULL) {
f63a17d6 5646 if (fatal)
c48ffbcc 5647 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 5648 else
6849b73c 5649 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5650 goto err;
5651 }
ccb8e6e0
BK		 5652
5653 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5654 /*
5655 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5656 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5657 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5658 */
5659 if (sslv2format && cipher[0] != '\0')
5660 continue;
5661
ccb8e6e0
BK		 5662 /* For SSLv2-compat, ignore leading 0-byte. */
5663 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5664 if (c != NULL) {
90134d98
BK		 5665 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5666 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6 5667 if (fatal)
c48ffbcc 5668 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 5669 else
6849b73c 5670 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5671 goto err;
5672 }
5673 }
5674 }
5675 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6 5676 if (fatal)
c48ffbcc 5677 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
f63a17d6 5678 else
6849b73c 5679 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5680 goto err;
5681 }
5682
90134d98
BK		 5683 if (skp != NULL)
5684 *skp = sk;
5685 else
5686 sk_SSL_CIPHER_free(sk);
5687 if (scsvs_out != NULL)
5688 *scsvs_out = scsvs;
5689 else
5690 sk_SSL_CIPHER_free(scsvs);
5691 return 1;
ccb8e6e0
BK		 5692 err:
5693 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5694 sk_SSL_CIPHER_free(scsvs);
5695 return 0;
ccb8e6e0 5696}
3fc8d856
MC		 5697
5698int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5699{
5700 ctx->max_early_data = max_early_data;
5701
5702 return 1;
5703}
5704
46dcb945 5705uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5706{
5707 return ctx->max_early_data;
5708}
5709
5710int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5711{
5712 s->max_early_data = max_early_data;
5713
5714 return 1;
5715}
5716
a8e75d56 5717uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5718{
5719 return s->max_early_data;
5720}
ae3947de 5721
4e8548e8
MC		 5722int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5723{
5724 ctx->recv_max_early_data = recv_max_early_data;
5725
5726 return 1;
5727}
5728
5729uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5730{
5731 return ctx->recv_max_early_data;
5732}
5733
5734int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5735{
5736 s->recv_max_early_data = recv_max_early_data;
5737
5738 return 1;
5739}
5740
5741uint32_t SSL_get_recv_max_early_data(const SSL *s)
5742{
5743 return s->recv_max_early_data;
5744}
5745
cf72c757
F		 5746__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5747{
5748 /* Return any active Max Fragment Len extension */
5749 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5750 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5751
5752 /* return current SSL connection setting */
5753 return ssl->max_send_fragment;
5754}
5755
5756__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5757{
5758 /* Return a value regarding an active Max Fragment Len extension */
5759 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5760 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5761 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5762
5763 /* else limit |split_send_fragment| to current |max_send_fragment| */
5764 if (ssl->split_send_fragment > ssl->max_send_fragment)
5765 return ssl->max_send_fragment;
5766
5767 /* return current SSL connection setting */
5768 return ssl->split_send_fragment;
5769}
042c5753
MC		 5770
5771int SSL_stateless(SSL *s)
5772{
5773 int ret;
5774
5775 /* Ensure there is no state left over from a previous invocation */
5776 if (!SSL_clear(s))
d6bb50a5 5777 return 0;
042c5753
MC		 5778
5779 ERR_clear_error();
5780
555cbb32 5781 s->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 5782 ret = SSL_accept(s);
555cbb32 5783 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 5784
d6bb50a5 5785 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5786 return 1;
5787
e440f513
MC		 5788 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5789 return 0;
5790
5791 return -1;
042c5753 5792}
9d75dce3 5793
e97be718
MC		 5794void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5795{
5796 ctx->pha_enabled = val;
5797}
5798
32097b33 5799void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 5800{
32097b33 5801 ssl->pha_enabled = val;
9d75dce3
TS		 5802}
5803
5804int SSL_verify_client_post_handshake(SSL *ssl)
5805{
5806 if (!SSL_IS_TLS13(ssl)) {
6849b73c 5807 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
9d75dce3
TS		 5808 return 0;
5809 }
5810 if (!ssl->server) {
6849b73c 5811 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
9d75dce3
TS		 5812 return 0;
5813 }
5814
5815 if (!SSL_is_init_finished(ssl)) {
6849b73c 5816 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
9d75dce3
TS		 5817 return 0;
5818 }
5819
5820 switch (ssl->post_handshake_auth) {
5821 case SSL_PHA_NONE:
6849b73c 5822 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
9d75dce3
TS		 5823 return 0;
5824 default:
5825 case SSL_PHA_EXT_SENT:
6849b73c 5826 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
9d75dce3
TS		 5827 return 0;
5828 case SSL_PHA_EXT_RECEIVED:
5829 break;
5830 case SSL_PHA_REQUEST_PENDING:
6849b73c 5831 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
9d75dce3
TS		 5832 return 0;
5833 case SSL_PHA_REQUESTED:
6849b73c 5834 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
9d75dce3
TS		 5835 return 0;
5836 }
5837
5838 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5839
5840 /* checks verify_mode and algorithm_auth */
5841 if (!send_certificate_request(ssl)) {
5842 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6849b73c 5843 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
9d75dce3
TS		 5844 return 0;
5845 }
5846
5847 ossl_statem_set_in_init(ssl, 1);
5848 return 1;
5849}
df0fed9a
TS		 5850
5851int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5852 SSL_CTX_generate_session_ticket_fn gen_cb,
5853 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5854 void *arg)
5855{
5856 ctx->generate_ticket_cb = gen_cb;
5857 ctx->decrypt_ticket_cb = dec_cb;
5858 ctx->ticket_cb_data = arg;
5859 return 1;
5860}
c9598459
MC		 5861
5862void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5863 SSL_allow_early_data_cb_fn cb,
5864 void *arg)
5865{
5866 ctx->allow_early_data_cb = cb;
5867 ctx->allow_early_data_cb_data = arg;
5868}
5869
5870void SSL_set_allow_early_data_cb(SSL *s,
5871 SSL_allow_early_data_cb_fn cb,
5872 void *arg)
5873{
5874 s->allow_early_data_cb = cb;
5875 s->allow_early_data_cb_data = arg;
5876}
c8f6c28a 5877
b4250010 5878const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 5879 int nid,
5880 const char *properties)
5881{
301fcb28 5882 const EVP_CIPHER *ciph;
5fcb97c6 5883
301fcb28
MC		 5884 ciph = tls_get_cipher_from_engine(nid);
5885 if (ciph != NULL)
5886 return ciph;
0618b62c 5887
c8f6c28a 5888 /*
301fcb28
MC		 5889 * If there is no engine cipher then we do an explicit fetch. This may fail
5890 * and that could be ok
c8f6c28a 5891 */
5fcb97c6
MC		 5892 ERR_set_mark();
5893 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5894 ERR_pop_to_mark();
5895 return ciph;
c8f6c28a
MC		 5896}
5897
5898
5899int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5900{
5901 /* Don't up-ref an implicit EVP_CIPHER */
5902 if (EVP_CIPHER_provider(cipher) == NULL)
5903 return 1;
5904
5905 /*
5906 * The cipher was explicitly fetched and therefore it is safe to cast
5907 * away the const
5908 */
5909 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5910}
5911
5912void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5913{
5914 if (cipher == NULL)
5915 return;
5916
5917 if (EVP_CIPHER_provider(cipher) != NULL) {
5918 /*
5919 * The cipher was explicitly fetched and therefore it is safe to cast
5920 * away the const
5921 */
5922 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5923 }
5924}
5925
b4250010 5926const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 5927 int nid,
5928 const char *properties)
5929{
301fcb28 5930 const EVP_MD *md;
5fcb97c6 5931
301fcb28
MC		 5932 md = tls_get_digest_from_engine(nid);
5933 if (md != NULL)
5934 return md;
c8f6c28a
MC		 5935
5936 /* Otherwise we do an explicit fetch */
5fcb97c6
MC		 5937 ERR_set_mark();
5938 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5939 ERR_pop_to_mark();
5940 return md;
c8f6c28a
MC		 5941}
5942
5943int ssl_evp_md_up_ref(const EVP_MD *md)
5944{
5945 /* Don't up-ref an implicit EVP_MD */
5946 if (EVP_MD_provider(md) == NULL)
5947 return 1;
5948
5949 /*
5950 * The digest was explicitly fetched and therefore it is safe to cast
5951 * away the const
5952 */
5953 return EVP_MD_up_ref((EVP_MD *)md);
5954}
5955
5956void ssl_evp_md_free(const EVP_MD *md)
5957{
5958 if (md == NULL)
5959 return;
5960
5961 if (EVP_MD_provider(md) != NULL) {
5962 /*
5963 * The digest was explicitly fetched and therefore it is safe to cast
5964 * away the const
5965 */
5966 EVP_MD_free((EVP_MD *)md);
5967 }
5968}
163f6dc1
MC		 5969
5970int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
5971{
5972 if (!ssl_security(s, SSL_SECOP_TMP_DH,
5973 EVP_PKEY_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 5974 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 5975 EVP_PKEY_free(dhpkey);
5976 return 0;
5977 }
5978 EVP_PKEY_free(s->cert->dh_tmp);
5979 s->cert->dh_tmp = dhpkey;
5980 return 1;
5981}
5982
5983int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
5984{
5985 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
5986 EVP_PKEY_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 5987 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 5988 EVP_PKEY_free(dhpkey);
5989 return 0;
5990 }
5991 EVP_PKEY_free(ctx->cert->dh_tmp);
5992 ctx->cert->dh_tmp = dhpkey;
5993 return 1;
5994}
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