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Update Stream Receive Buffers design document with implementation details
[thirdparty/openssl.git] / ssl / ssl_lib.c
CommitLineData
0f113f3e 1/*
fecb3aae 2 * Copyright 1995-2022 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"
d5f9166b 14#include "internal/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>
4566dae7 24#include <openssl/core_names.h>
67dc995e 25#include "internal/cryptlib.h"
cd420b0b 26#include "internal/refcount.h"
50ec7505 27#include "internal/ktls.h"
0f113f3e 28
38b051a1 29static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
fce78bd4
BE		 30 unsigned char *s, size_t t, size_t *u)
31{
38b051a1 32 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 33}
34
38b051a1 35static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
fce78bd4 36{
38b051a1 37 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 38}
39
38b051a1
TM		 40static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
41 size_t s, unsigned char *t)
fce78bd4 42{
38b051a1 43 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 44}
45
46static int ssl_undefined_function_6(int r)
47{
fce78bd4
BE		 48 return ssl_undefined_function(NULL);
49}
50
38b051a1
TM		 51static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
52 size_t s, const char *t, size_t u,
fce78bd4
BE		 53 const unsigned char *v, size_t w, int x)
54{
38b051a1
TM		 55 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
56}
57
58static int ssl_undefined_function_8(SSL_CONNECTION *sc)
59{
60 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 61}
62
0f113f3e 63SSL3_ENC_METHOD ssl3_undef_enc_method = {
38b051a1 64 ssl_undefined_function_8,
fce78bd4
BE		 65 ssl_undefined_function_3,
66 ssl_undefined_function_4,
67 ssl_undefined_function_5,
0f113f3e
MC		 68 NULL, /* client_finished_label */
69 0, /* client_finished_label_len */
70 NULL, /* server_finished_label */
71 0, /* server_finished_label_len */
fce78bd4
BE		 72 ssl_undefined_function_6,
73 ssl_undefined_function_7,
0f113f3e 74};
d02b48c6 75
07bbc92c
MC		 76struct ssl_async_args {
77 SSL *s;
78 void *buf;
348240c6 79 size_t num;
a230b26e 80 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 81 union {
eda75751 82 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 83 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 84 int (*func_other) (SSL *);
add2f5ca 85 } f;
07bbc92c
MC		 86};
87
919ba009
VD		 88static const struct {
89 uint8_t mtype;
90 uint8_t ord;
a230b26e 91 int nid;
919ba009 92} dane_mds[] = {
a230b26e
EK		 93 {
94 DANETLS_MATCHING_FULL, 0, NID_undef
95 },
96 {
97 DANETLS_MATCHING_2256, 1, NID_sha256
98 },
99 {
100 DANETLS_MATCHING_2512, 2, NID_sha512
101 },
919ba009
VD		 102};
103
104static int dane_ctx_enable(struct dane_ctx_st *dctx)
105{
106 const EVP_MD **mdevp;
107 uint8_t *mdord;
108 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 109 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 110 size_t i;
111
5ae4ceb9
VD		 112 if (dctx->mdevp != NULL)
113 return 1;
114
919ba009
VD		 115 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
116 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
117
118 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 119 OPENSSL_free(mdord);
919ba009 120 OPENSSL_free(mdevp);
919ba009
VD		 121 return 0;
122 }
123
124 /* Install default entries */
125 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
126 const EVP_MD *md;
127
128 if (dane_mds[i].nid == NID_undef ||
129 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
130 continue;
131 mdevp[dane_mds[i].mtype] = md;
132 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
133 }
134
135 dctx->mdevp = mdevp;
136 dctx->mdord = mdord;
137 dctx->mdmax = mdmax;
138
139 return 1;
140}
141
142static void dane_ctx_final(struct dane_ctx_st *dctx)
143{
144 OPENSSL_free(dctx->mdevp);
145 dctx->mdevp = NULL;
146
147 OPENSSL_free(dctx->mdord);
148 dctx->mdord = NULL;
149 dctx->mdmax = 0;
150}
151
152static void tlsa_free(danetls_record *t)
153{
154 if (t == NULL)
155 return;
156 OPENSSL_free(t->data);
157 EVP_PKEY_free(t->spki);
158 OPENSSL_free(t);
159}
160
b9aec69a 161static void dane_final(SSL_DANE *dane)
919ba009
VD		 162{
163 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
164 dane->trecs = NULL;
165
79b2a2f2 166 OSSL_STACK_OF_X509_free(dane->certs);
919ba009
VD		 167 dane->certs = NULL;
168
169 X509_free(dane->mcert);
170 dane->mcert = NULL;
171 dane->mtlsa = NULL;
172 dane->mdpth = -1;
173 dane->pdpth = -1;
174}
175
176/*
177 * dane_copy - Copy dane configuration, sans verification state.
178 */
38b051a1 179static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
919ba009
VD		 180{
181 int num;
182 int i;
183
184 if (!DANETLS_ENABLED(&from->dane))
185 return 1;
186
e431363f 187 num = sk_danetls_record_num(from->dane.trecs);
919ba009 188 dane_final(&to->dane);
5ae4ceb9 189 to->dane.flags = from->dane.flags;
38b051a1 190 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
7a908204 191 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 192
193 if (to->dane.trecs == NULL) {
e077455e 194 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
9f6b22b8
VD		 195 return 0;
196 }
919ba009 197
919ba009
VD		 198 for (i = 0; i < num; ++i) {
199 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 200
38b051a1
TM		 201 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
202 t->selector, t->mtype, t->data, t->dlen) <= 0)
919ba009
VD		 203 return 0;
204 }
205 return 1;
206}
207
a230b26e
EK		 208static int dane_mtype_set(struct dane_ctx_st *dctx,
209 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 210{
211 int i;
212
213 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
6849b73c 214 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 215 return 0;
216 }
217
218 if (mtype > dctx->mdmax) {
219 const EVP_MD **mdevp;
220 uint8_t *mdord;
a230b26e 221 int n = ((int)mtype) + 1;
919ba009
VD		 222
223 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
e077455e 224 if (mdevp == NULL)
919ba009 225 return -1;
919ba009
VD		 226 dctx->mdevp = mdevp;
227
228 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
e077455e 229 if (mdord == NULL)
919ba009 230 return -1;
919ba009
VD		 231 dctx->mdord = mdord;
232
233 /* Zero-fill any gaps */
a230b26e 234 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 235 mdevp[i] = NULL;
236 mdord[i] = 0;
237 }
238
239 dctx->mdmax = mtype;
240 }
241
242 dctx->mdevp[mtype] = md;
243 /* Coerce ordinal of disabled matching types to 0 */
244 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
245
246 return 1;
247}
248
b9aec69a 249static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 250{
251 if (mtype > dane->dctx->mdmax)
252 return NULL;
253 return dane->dctx->mdevp[mtype];
254}
255
a230b26e
EK		 256static int dane_tlsa_add(SSL_DANE *dane,
257 uint8_t usage,
258 uint8_t selector,
6d4313f0 259 uint8_t mtype, const unsigned char *data, size_t dlen)
919ba009
VD		 260{
261 danetls_record *t;
262 const EVP_MD *md = NULL;
263 int ilen = (int)dlen;
264 int i;
9f6b22b8 265 int num;
919ba009
VD		 266
267 if (dane->trecs == NULL) {
6849b73c 268 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
919ba009
VD		 269 return -1;
270 }
271
272 if (ilen < 0 || dlen != (size_t)ilen) {
6849b73c 273 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
919ba009
VD		 274 return 0;
275 }
276
277 if (usage > DANETLS_USAGE_LAST) {
6849b73c 278 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
919ba009
VD		 279 return 0;
280 }
281
282 if (selector > DANETLS_SELECTOR_LAST) {
6849b73c 283 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
919ba009
VD		 284 return 0;
285 }
286
287 if (mtype != DANETLS_MATCHING_FULL) {
288 md = tlsa_md_get(dane, mtype);
289 if (md == NULL) {
6849b73c 290 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
919ba009
VD		 291 return 0;
292 }
293 }
294
ed576acd 295 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
6849b73c 296 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
919ba009
VD		 297 return 0;
298 }
299 if (!data) {
6849b73c 300 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
919ba009
VD		 301 return 0;
302 }
303
e077455e 304 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
919ba009 305 return -1;
919ba009
VD		 306
307 t->usage = usage;
308 t->selector = selector;
309 t->mtype = mtype;
348240c6 310 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 311 if (t->data == NULL) {
312 tlsa_free(t);
919ba009
VD		 313 return -1;
314 }
348240c6
MC		 315 memcpy(t->data, data, dlen);
316 t->dlen = dlen;
919ba009
VD		 317
318 /* Validate and cache full certificate or public key */
319 if (mtype == DANETLS_MATCHING_FULL) {
320 const unsigned char *p = data;
321 X509 *cert = NULL;
322 EVP_PKEY *pkey = NULL;
323
324 switch (selector) {
325 case DANETLS_SELECTOR_CERT:
348240c6 326 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 327 dlen != (size_t)(p - data)) {
328 tlsa_free(t);
6849b73c 329 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
919ba009
VD		 330 return 0;
331 }
332 if (X509_get0_pubkey(cert) == NULL) {
333 tlsa_free(t);
6849b73c 334 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
919ba009
VD		 335 return 0;
336 }
337
338 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
339 X509_free(cert);
340 break;
341 }
342
343 /*
344 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
345 * records that contain full certificates of trust-anchors that are
346 * not present in the wire chain. For usage PKIX-TA(0), we augment
347 * the chain with untrusted Full(0) certificates from DNS, in case
348 * they are missing from the chain.
349 */
350 if ((dane->certs == NULL &&
351 (dane->certs = sk_X509_new_null()) == NULL) ||
352 !sk_X509_push(dane->certs, cert)) {
e077455e 353 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
919ba009
VD		 354 X509_free(cert);
355 tlsa_free(t);
356 return -1;
357 }
358 break;
359
360 case DANETLS_SELECTOR_SPKI:
348240c6 361 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 362 dlen != (size_t)(p - data)) {
363 tlsa_free(t);
6849b73c 364 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
919ba009
VD		 365 return 0;
366 }
367
368 /*
369 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
370 * records that contain full bare keys of trust-anchors that are
371 * not present in the wire chain.
372 */
373 if (usage == DANETLS_USAGE_DANE_TA)
374 t->spki = pkey;
375 else
376 EVP_PKEY_free(pkey);
377 break;
378 }
379 }
380
381 /*-
382 * Find the right insertion point for the new record.
383 *
384 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
385 * they can be processed first, as they require no chain building, and no
386 * expiration or hostname checks. Because DANE-EE(3) is numerically
387 * largest, this is accomplished via descending sort by "usage".
388 *
389 * We also sort in descending order by matching ordinal to simplify
390 * the implementation of digest agility in the verification code.
391 *
392 * The choice of order for the selector is not significant, so we
393 * use the same descending order for consistency.
394 */
9f6b22b8
VD		 395 num = sk_danetls_record_num(dane->trecs);
396 for (i = 0; i < num; ++i) {
919ba009 397 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 398
919ba009
VD		 399 if (rec->usage > usage)
400 continue;
401 if (rec->usage < usage)
402 break;
403 if (rec->selector > selector)
404 continue;
405 if (rec->selector < selector)
406 break;
407 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
408 continue;
409 break;
410 }
411
412 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
413 tlsa_free(t);
e077455e 414 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
919ba009
VD		 415 return -1;
416 }
417 dane->umask |= DANETLS_USAGE_BIT(usage);
418
419 return 1;
420}
421
c8feba72
BK		 422/*
423 * Return 0 if there is only one version configured and it was disabled
424 * at configure time. Return 1 otherwise.
425 */
426static int ssl_check_allowed_versions(int min_version, int max_version)
427{
428 int minisdtls = 0, maxisdtls = 0;
429
430 /* Figure out if we're doing DTLS versions or TLS versions */
431 if (min_version == DTLS1_BAD_VER
432 || min_version >> 8 == DTLS1_VERSION_MAJOR)
433 minisdtls = 1;
434 if (max_version == DTLS1_BAD_VER
435 || max_version >> 8 == DTLS1_VERSION_MAJOR)
436 maxisdtls = 1;
437 /* A wildcard version of 0 could be DTLS or TLS. */
438 if ((minisdtls && !maxisdtls && max_version != 0)
439 || (maxisdtls && !minisdtls && min_version != 0)) {
440 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
441 return 0;
442 }
443
444 if (minisdtls || maxisdtls) {
445 /* Do DTLS version checks. */
446 if (min_version == 0)
447 /* Ignore DTLS1_BAD_VER */
448 min_version = DTLS1_VERSION;
449 if (max_version == 0)
450 max_version = DTLS1_2_VERSION;
451#ifdef OPENSSL_NO_DTLS1_2
452 if (max_version == DTLS1_2_VERSION)
453 max_version = DTLS1_VERSION;
454#endif
455#ifdef OPENSSL_NO_DTLS1
456 if (min_version == DTLS1_VERSION)
457 min_version = DTLS1_2_VERSION;
458#endif
79b4444d
DMSP		 459 /* Done massaging versions; do the check. */
460 if (0
c8feba72
BK		 461#ifdef OPENSSL_NO_DTLS1
462 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
463 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
464#endif
465#ifdef OPENSSL_NO_DTLS1_2
466 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
467 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
468#endif
469 )
470 return 0;
471 } else {
472 /* Regular TLS version checks. */
79b4444d
DMSP		 473 if (min_version == 0)
474 min_version = SSL3_VERSION;
475 if (max_version == 0)
476 max_version = TLS1_3_VERSION;
c8feba72 477#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 478 if (max_version == TLS1_3_VERSION)
479 max_version = TLS1_2_VERSION;
c8feba72
BK		 480#endif
481#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 482 if (max_version == TLS1_2_VERSION)
483 max_version = TLS1_1_VERSION;
c8feba72
BK		 484#endif
485#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 486 if (max_version == TLS1_1_VERSION)
487 max_version = TLS1_VERSION;
c8feba72
BK		 488#endif
489#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 490 if (max_version == TLS1_VERSION)
491 max_version = SSL3_VERSION;
c8feba72
BK		 492#endif
493#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 494 if (min_version == SSL3_VERSION)
495 min_version = TLS1_VERSION;
c8feba72
BK		 496#endif
497#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 498 if (min_version == TLS1_VERSION)
499 min_version = TLS1_1_VERSION;
c8feba72
BK		 500#endif
501#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 502 if (min_version == TLS1_1_VERSION)
503 min_version = TLS1_2_VERSION;
c8feba72
BK		 504#endif
505#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 506 if (min_version == TLS1_2_VERSION)
507 min_version = TLS1_3_VERSION;
c8feba72 508#endif
79b4444d
DMSP		 509 /* Done massaging versions; do the check. */
510 if (0
c8feba72
BK		 511#ifdef OPENSSL_NO_SSL3
512 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
513#endif
514#ifdef OPENSSL_NO_TLS1
515 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
516#endif
517#ifdef OPENSSL_NO_TLS1_1
518 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
519#endif
520#ifdef OPENSSL_NO_TLS1_2
521 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
522#endif
523#ifdef OPENSSL_NO_TLS1_3
524 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
525#endif
526 )
527 return 0;
528 }
529 return 1;
530}
531
08073700
RB		 532#if defined(__TANDEM) && defined(OPENSSL_VPROC)
533/*
534 * Define a VPROC function for HP NonStop build ssl library.
535 * This is used by platform version identification tools.
536 * Do not inline this procedure or make it static.
537 */
538# define OPENSSL_VPROC_STRING_(x) x##_SSL
539# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
540# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
541void OPENSSL_VPROC_FUNC(void) {}
542#endif
543
6d814fd6 544static int clear_record_layer(SSL_CONNECTION *s)
d31fb0b5 545{
6d814fd6
MC		 546 int ret;
547
548 /* We try and reset both record layers even if one fails */
549
550 ret = ssl_set_new_record_layer(s,
551 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
552 : TLS_ANY_VERSION,
553 OSSL_RECORD_DIRECTION_READ,
554 OSSL_RECORD_PROTECTION_LEVEL_NONE,
555 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
556 NID_undef, NULL, NULL);
557
558 ret &= ssl_set_new_record_layer(s,
559 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
560 : TLS_ANY_VERSION,
561 OSSL_RECORD_DIRECTION_WRITE,
562 OSSL_RECORD_PROTECTION_LEVEL_NONE,
563 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
564 NID_undef, NULL, NULL);
565 /* SSLfatal already called in the event of failure */
566 return ret;
d31fb0b5
RS		 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
38b051a1
TM		 576 return s->method->ssl_reset(s);
577}
578
579int ossl_ssl_connection_reset(SSL *s)
580{
581 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
582
583 if (sc == NULL)
584 return 0;
585
586 if (ssl_clear_bad_session(sc)) {
587 SSL_SESSION_free(sc->session);
588 sc->session = NULL;
0f113f3e 589 }
38b051a1
TM		 590 SSL_SESSION_free(sc->psksession);
591 sc->psksession = NULL;
592 OPENSSL_free(sc->psksession_id);
593 sc->psksession_id = NULL;
594 sc->psksession_id_len = 0;
595 sc->hello_retry_request = 0;
596 sc->sent_tickets = 0;
d62bfb39 597
38b051a1
TM		 598 sc->error = 0;
599 sc->hit = 0;
600 sc->shutdown = 0;
d02b48c6 601
38b051a1 602 if (sc->renegotiate) {
6849b73c 603 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
0f113f3e
MC		 604 return 0;
605 }
d02b48c6 606
38b051a1 607 ossl_statem_clear(sc);
413c4f45 608
38b051a1
TM		 609 /* TODO(QUIC): Version handling not yet clear */
610 sc->version = s->method->version;
611 sc->client_version = sc->version;
612 sc->rwstate = SSL_NOTHING;
d02b48c6 613
38b051a1
TM		 614 BUF_MEM_free(sc->init_buf);
615 sc->init_buf = NULL;
38b051a1 616 sc->first_packet = 0;
d02b48c6 617
38b051a1 618 sc->key_update = SSL_KEY_UPDATE_NONE;
b67cb09f
TS		 619 memset(sc->ext.compress_certificate_from_peer, 0,
620 sizeof(sc->ext.compress_certificate_from_peer));
621 sc->ext.compress_certificate_sent = 0;
44c04a2e 622
38b051a1
TM		 623 EVP_MD_CTX_free(sc->pha_dgst);
624 sc->pha_dgst = NULL;
88834998 625
919ba009 626 /* Reset DANE verification result state */
38b051a1
TM		 627 sc->dane.mdpth = -1;
628 sc->dane.pdpth = -1;
629 X509_free(sc->dane.mcert);
630 sc->dane.mcert = NULL;
631 sc->dane.mtlsa = NULL;
919ba009
VD		 632
633 /* Clear the verification result peername */
38b051a1 634 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
919ba009 635
29948ac8 636 /* Clear any shared connection state */
38b051a1
TM		 637 OPENSSL_free(sc->shared_sigalgs);
638 sc->shared_sigalgs = NULL;
639 sc->shared_sigalgslen = 0;
29948ac8 640
0f113f3e
MC		 641 /*
642 * Check to see if we were changed into a different method, if so, revert
24252537 643 * back.
0f113f3e 644 */
38b051a1
TM		 645 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
646 s->method->ssl_deinit(s);
647 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
648 if (!s->method->ssl_init(s))
a89325e4 649 return 0;
b77f3ed1
MC		 650 } else {
651 if (!s->method->ssl_clear(s))
652 return 0;
653 }
33d23b87 654
38b051a1 655 RECORD_LAYER_clear(&sc->rlayer);
cffafb5f
MC		 656 BIO_free(sc->rlayer.rrlnext);
657 sc->rlayer.rrlnext = NULL;
33d23b87 658
6d814fd6 659 if (!clear_record_layer(sc))
2b71b042 660 return 0;
aedbb71b 661
a89325e4 662 return 1;
0f113f3e 663}
d02b48c6 664
dd0164e7 665#ifndef OPENSSL_NO_DEPRECATED_3_0
4f43d0e7 666/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 667int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
668{
669 STACK_OF(SSL_CIPHER) *sk;
670
671 ctx->method = meth;
672
5d120511 673 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
6849b73c 674 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
2340ed27
BK		 675 return 0;
676 }
a68eee67 677 sk = ssl_create_cipher_list(ctx,
f865b081
MC		 678 ctx->tls13_ciphersuites,
679 &(ctx->cipher_list),
0f113f3e 680 &(ctx->cipher_list_by_id),
5d120511 681 OSSL_default_cipher_list(), ctx->cert);
0f113f3e 682 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
6849b73c 683 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 684 return 0;
0f113f3e 685 }
208fb891 686 return 1;
0f113f3e 687}
dd0164e7 688#endif
d02b48c6 689
4f43d0e7 690SSL *SSL_new(SSL_CTX *ctx)
0f113f3e 691{
0f113f3e 692 if (ctx == NULL) {
6849b73c 693 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
26a7d938 694 return NULL;
0f113f3e
MC		 695 }
696 if (ctx->method == NULL) {
6849b73c 697 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 698 return NULL;
0f113f3e 699 }
38b051a1
TM		 700 return ctx->method->ssl_new(ctx);
701}
702
703int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
704{
705 ssl->type = type;
706
707 ssl->references = 1;
708 ssl->lock = CRYPTO_THREAD_lock_new();
709 if (ssl->lock == NULL)
710 return 0;
711
712 SSL_CTX_up_ref(ctx);
713 ssl->ctx = ctx;
714
715 ssl->method = ctx->method;
716
717 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
718 return 0;
719
720 return 1;
721}
722
723SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
724{
725 SSL_CONNECTION *s;
726 SSL *ssl;
0f113f3e 727
b51bce94 728 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e 729 if (s == NULL)
38b051a1 730 return NULL;
0f113f3e 731
38b051a1
TM		 732 ssl = &s->ssl;
733 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
e6b10c34
BE		 734 OPENSSL_free(s);
735 s = NULL;
e077455e 736 goto sslerr;
e6b10c34 737 }
ae3947de 738
38b051a1
TM		 739#ifndef OPENSSL_NO_QUIC
740 /* set the parent (user visible) ssl to self */
741 s->user_ssl = ssl;
742#endif
743
c036e210 744 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 745
0f113f3e 746 s->options = ctx->options;
5ae4ceb9 747 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 748 s->min_proto_version = ctx->min_proto_version;
749 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 750 s->mode = ctx->mode;
751 s->max_cert_list = ctx->max_cert_list;
3fc8d856 752 s->max_early_data = ctx->max_early_data;
4e8548e8 753 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 754 s->num_tickets = ctx->num_tickets;
e97be718 755 s->pha_enabled = ctx->pha_enabled;
0f113f3e 756
f865b081
MC		 757 /* Shallow copy of the ciphersuites stack */
758 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
759 if (s->tls13_ciphersuites == NULL)
e077455e 760 goto cerr;
f865b081 761
2c382349
KR		 762 /*
763 * Earlier library versions used to copy the pointer to the CERT, not
764 * its contents; only when setting new parameters for the per-SSL
765 * copy, ssl_cert_new would be called (and the direct reference to
766 * the per-SSL_CTX settings would be lost, but those still were
767 * indirectly accessed for various purposes, and for that reason they
768 * used to be known as s->ctx->default_cert). Now we don't look at the
769 * SSL_CTX's CERT after having duplicated it once.
770 */
771 s->cert = ssl_cert_dup(ctx->cert);
772 if (s->cert == NULL)
e077455e 773 goto sslerr;
0f113f3e 774
52e1d7b1 775 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 776 s->msg_callback = ctx->msg_callback;
777 s->msg_callback_arg = ctx->msg_callback_arg;
778 s->verify_mode = ctx->verify_mode;
779 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
eb7d6c2a
MC		 780 s->rlayer.record_padding_cb = ctx->record_padding_cb;
781 s->rlayer.record_padding_arg = ctx->record_padding_arg;
782 s->rlayer.block_padding = ctx->block_padding;
0f113f3e 783 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 784 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 785 goto err;
0f113f3e
MC		 786 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
787 s->verify_callback = ctx->default_verify_callback;
788 s->generate_session_id = ctx->generate_session_id;
789
790 s->param = X509_VERIFY_PARAM_new();
a71edf3b 791 if (s->param == NULL)
e077455e 792 goto asn1err;
0f113f3e 793 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 794 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 795
796 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 797 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 798 s->split_send_fragment = ctx->split_send_fragment;
799 s->max_pipelines = ctx->max_pipelines;
cffafb5f 800 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
bf21446a 801
aff8c126
RS		 802 s->ext.debug_cb = 0;
803 s->ext.debug_arg = NULL;
804 s->ext.ticket_expected = 0;
805 s->ext.status_type = ctx->ext.status_type;
806 s->ext.status_expected = 0;
807 s->ext.ocsp.ids = NULL;
808 s->ext.ocsp.exts = NULL;
809 s->ext.ocsp.resp = NULL;
810 s->ext.ocsp.resp_len = 0;
16203f7b 811 SSL_CTX_up_ref(ctx);
222da979 812 s->session_ctx = ctx;
aff8c126
RS		 813 if (ctx->ext.ecpointformats) {
814 s->ext.ecpointformats =
815 OPENSSL_memdup(ctx->ext.ecpointformats,
816 ctx->ext.ecpointformats_len);
39a14059
MC		 817 if (!s->ext.ecpointformats) {
818 s->ext.ecpointformats_len = 0;
0f113f3e 819 goto err;
39a14059 820 }
aff8c126
RS		 821 s->ext.ecpointformats_len =
822 ctx->ext.ecpointformats_len;
823 }
824 if (ctx->ext.supportedgroups) {
825 s->ext.supportedgroups =
826 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 827 ctx->ext.supportedgroups_len
b92d7b62 828 * sizeof(*ctx->ext.supportedgroups));
39a14059
MC		 829 if (!s->ext.supportedgroups) {
830 s->ext.supportedgroups_len = 0;
0f113f3e 831 goto err;
39a14059 832 }
aff8c126 833 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 834 }
dbc6268f 835
a230b26e 836#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 837 s->ext.npn = NULL;
a230b26e 838#endif
6f017a8f 839
38b051a1
TM		 840 if (ctx->ext.alpn != NULL) {
841 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
39a14059
MC		 842 if (s->ext.alpn == NULL) {
843 s->ext.alpn_len = 0;
0f113f3e 844 goto err;
39a14059 845 }
38b051a1
TM		 846 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
847 s->ext.alpn_len = ctx->ext.alpn_len;
0f113f3e 848 }
d02b48c6 849
696178ed 850 s->verified_chain = NULL;
0f113f3e 851 s->verify_result = X509_V_OK;
d02b48c6 852
a974e64a
MC		 853 s->default_passwd_callback = ctx->default_passwd_callback;
854 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
855
44c04a2e
MC		 856 s->key_update = SSL_KEY_UPDATE_NONE;
857
c9598459
MC		 858 s->allow_early_data_cb = ctx->allow_early_data_cb;
859 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
860
38b051a1 861 if (!ssl->method->ssl_init(ssl))
e077455e 862 goto sslerr;
d02b48c6 863
0f113f3e 864 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 865
38b051a1 866 if (!SSL_clear(ssl))
e077455e 867 goto sslerr;
58964a49 868
ddac1974 869#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 870 s->psk_client_callback = ctx->psk_client_callback;
871 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 872#endif
f46184bd
MC		 873 s->psk_find_session_cb = ctx->psk_find_session_cb;
874 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 875
9f5a87fd
PY		 876 s->async_cb = ctx->async_cb;
877 s->async_cb_arg = ctx->async_cb_arg;
878
07bbc92c
MC		 879 s->job = NULL;
880
b67cb09f
TS		 881#ifndef OPENSSL_NO_COMP_ALG
882 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
883#endif
884
ed29e82a 885#ifndef OPENSSL_NO_CT
38b051a1 886 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
a230b26e 887 ctx->ct_validation_callback_arg))
e077455e 888 goto sslerr;
ed29e82a
RP		 889#endif
890
38b051a1 891 return ssl;
e077455e
RL		 892 cerr:
893 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
894 goto err;
895 asn1err:
896 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
897 goto err;
898 sslerr:
899 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
0f113f3e 900 err:
38b051a1 901 SSL_free(ssl);
16203f7b 902 return NULL;
0f113f3e 903}
d02b48c6 904
e417070c
RS		 905int SSL_is_dtls(const SSL *s)
906{
38b051a1
TM		 907 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
908
909 if (sc == NULL)
910 return 0;
911
912 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
e417070c
RS		 913}
914
c5ebfcab 915int SSL_up_ref(SSL *s)
a18a31e4 916{
16203f7b 917 int i;
c5ebfcab 918
2f545ae4 919 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 920 return 0;
921
922 REF_PRINT_COUNT("SSL", s);
923 REF_ASSERT_ISNT(i < 2);
924 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 925}
926
0f113f3e
MC		 927int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
928 unsigned int sid_ctx_len)
929{
fe9edc9d 930 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 931 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 932 return 0;
933 }
934 ctx->sid_ctx_length = sid_ctx_len;
935 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 936
937 return 1;
0f113f3e 938}
4eb77b26 939
0f113f3e
MC		 940int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
941 unsigned int sid_ctx_len)
942{
38b051a1
TM		 943 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
944
945 if (sc == NULL)
946 return 0;
947
0f113f3e 948 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 949 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 950 return 0;
951 }
38b051a1
TM		 952 sc->sid_ctx_length = sid_ctx_len;
953 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 954
955 return 1;
0f113f3e 956}
b4cadc6e 957
dc644fe2 958int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 959{
cd3f8c1b
RS		 960 if (!CRYPTO_THREAD_write_lock(ctx->lock))
961 return 0;
0f113f3e 962 ctx->generate_session_id = cb;
16203f7b 963 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 964 return 1;
965}
dc644fe2
GT		 966
967int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 968{
38b051a1
TM		 969 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
970
971 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
cd3f8c1b 972 return 0;
38b051a1 973 sc->generate_session_id = cb;
16203f7b 974 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 975 return 1;
976}
dc644fe2 977
f85c9904 978int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 979 unsigned int id_len)
980{
981 /*
982 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 983 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 984 * find if there's a session in the hash table that would conflict with
985 * any new session built out of this id/id_len and the ssl_version in use
986 * by this SSL.
987 */
988 SSL_SESSION r, *p;
38b051a1 989 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
0f113f3e 990
38b051a1 991 if (sc == NULL || id_len > sizeof(r.session_id))
0f113f3e
MC		 992 return 0;
993
38b051a1 994 r.ssl_version = sc->version;
0f113f3e
MC		 995 r.session_id_length = id_len;
996 memcpy(r.session_id, id, id_len);
997
38b051a1 998 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
cd3f8c1b 999 return 0;
38b051a1
TM		 1000 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1001 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
0f113f3e
MC		 1002 return (p != NULL);
1003}
dc644fe2 1004
bb7cd4e3 1005int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 1006{
1007 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1008}
bb7cd4e3
DSH		 1009
1010int SSL_set_purpose(SSL *s, int purpose)
0f113f3e 1011{
38b051a1
TM		 1012 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1013
1014 if (sc == NULL)
1015 return 0;
1016
1017 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
0f113f3e 1018}
926a56bf 1019
bb7cd4e3 1020int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 1021{
1022 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1023}
bb7cd4e3
DSH		 1024
1025int SSL_set_trust(SSL *s, int trust)
0f113f3e 1026{
38b051a1
TM		 1027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1028
1029 if (sc == NULL)
1030 return 0;
1031
1032 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
0f113f3e 1033}
bb7cd4e3 1034
919ba009
VD		 1035int SSL_set1_host(SSL *s, const char *hostname)
1036{
38b051a1
TM		 1037 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1038
1039 if (sc == NULL)
1040 return 0;
1041
c832840e
DW		 1042 /* If a hostname is provided and parses as an IP address,
1043 * treat it as such. */
38b051a1
TM		 1044 if (hostname != NULL
1045 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
c832840e
DW		 1046 return 1;
1047
38b051a1 1048 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
919ba009
VD		 1049}
1050
1051int SSL_add1_host(SSL *s, const char *hostname)
1052{
38b051a1
TM		 1053 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1054
1055 if (sc == NULL)
1056 return 0;
1057
c832840e
DW		 1058 /* If a hostname is provided and parses as an IP address,
1059 * treat it as such. */
892a9e4c
DW		 1060 if (hostname)
1061 {
1062 ASN1_OCTET_STRING *ip;
1063 char *old_ip;
1064
1065 ip = a2i_IPADDRESS(hostname);
1066 if (ip) {
1067 /* We didn't want it; only to check if it *is* an IP address */
1068 ASN1_OCTET_STRING_free(ip);
1069
38b051a1 1070 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
892a9e4c
DW		 1071 if (old_ip)
1072 {
f2bfc53b 1073 OPENSSL_free(old_ip);
892a9e4c
DW		 1074 /* There can be only one IP address */
1075 return 0;
1076 }
1077
38b051a1 1078 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
892a9e4c
DW		 1079 }
1080 }
c832840e 1081
38b051a1 1082 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
919ba009
VD		 1083}
1084
1085void SSL_set_hostflags(SSL *s, unsigned int flags)
1086{
38b051a1
TM		 1087 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1088
1089 if (sc == NULL)
1090 return;
1091
1092 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
919ba009
VD		 1093}
1094
4588cb44 1095const char *SSL_get0_peername(SSL *s)
919ba009 1096{
38b051a1
TM		 1097 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1098
1099 if (sc == NULL)
1100 return NULL;
1101
1102 return X509_VERIFY_PARAM_get0_peername(sc->param);
919ba009
VD		 1103}
1104
1105int SSL_CTX_dane_enable(SSL_CTX *ctx)
1106{
1107 return dane_ctx_enable(&ctx->dane);
1108}
1109
5ae4ceb9
VD		 1110unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1111{
1112 unsigned long orig = ctx->dane.flags;
1113
1114 ctx->dane.flags |= flags;
1115 return orig;
1116}
1117
1118unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1119{
1120 unsigned long orig = ctx->dane.flags;
1121
1122 ctx->dane.flags &= ~flags;
1123 return orig;
1124}
1125
919ba009
VD		 1126int SSL_dane_enable(SSL *s, const char *basedomain)
1127{
38b051a1
TM		 1128 SSL_DANE *dane;
1129 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919ba009 1130
38b051a1
TM		 1131 if (sc == NULL)
1132 return 0;
1133
1134 dane = &sc->dane;
919ba009 1135 if (s->ctx->dane.mdmax == 0) {
6849b73c 1136 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
919ba009
VD		 1137 return 0;
1138 }
1139 if (dane->trecs != NULL) {
6849b73c 1140 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
919ba009
VD		 1141 return 0;
1142 }
1143
8d887efa
VD		 1144 /*
1145 * Default SNI name. This rejects empty names, while set1_host below
9929c817 1146 * accepts them and disables hostname checks. To avoid side-effects with
8d887efa
VD		 1147 * invalid input, set the SNI name first.
1148 */
38b051a1 1149 if (sc->ext.hostname == NULL) {
dccd20d1 1150 if (!SSL_set_tlsext_host_name(s, basedomain)) {
6849b73c 1151 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1152 return -1;
8d887efa
VD		 1153 }
1154 }
1155
919ba009 1156 /* Primary RFC6125 reference identifier */
38b051a1 1157 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
6849b73c 1158 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
919ba009
VD		 1159 return -1;
1160 }
1161
919ba009
VD		 1162 dane->mdpth = -1;
1163 dane->pdpth = -1;
1164 dane->dctx = &s->ctx->dane;
1165 dane->trecs = sk_danetls_record_new_null();
1166
1167 if (dane->trecs == NULL) {
e077455e 1168 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
919ba009
VD		 1169 return -1;
1170 }
1171 return 1;
1172}
1173
5ae4ceb9
VD		 1174unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1175{
38b051a1
TM		 1176 unsigned long orig;
1177 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1178
1179 if (sc == NULL)
1180 return 0;
1181
1182 orig = sc->dane.flags;
5ae4ceb9 1183
38b051a1 1184 sc->dane.flags |= flags;
5ae4ceb9
VD		 1185 return orig;
1186}
1187
1188unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1189{
38b051a1
TM		 1190 unsigned long orig;
1191 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5ae4ceb9 1192
38b051a1
TM		 1193 if (sc == NULL)
1194 return 0;
1195
1196 orig = sc->dane.flags;
1197
1198 sc->dane.flags &= ~flags;
5ae4ceb9
VD		 1199 return orig;
1200}
1201
919ba009
VD		 1202int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1203{
38b051a1
TM		 1204 SSL_DANE *dane;
1205 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919ba009 1206
38b051a1
TM		 1207 if (sc == NULL)
1208 return -1;
1209
1210 dane = &sc->dane;
1211
1212 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
919ba009
VD		 1213 return -1;
1214 if (dane->mtlsa) {
1215 if (mcert)
1216 *mcert = dane->mcert;
1217 if (mspki)
1218 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1219 }
1220 return dane->mdpth;
1221}
1222
1223int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
6d4313f0 1224 uint8_t *mtype, const unsigned char **data, size_t *dlen)
919ba009 1225{
38b051a1
TM		 1226 SSL_DANE *dane;
1227 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919ba009 1228
38b051a1
TM		 1229 if (sc == NULL)
1230 return -1;
1231
1232 dane = &sc->dane;
1233
1234 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
919ba009
VD		 1235 return -1;
1236 if (dane->mtlsa) {
1237 if (usage)
1238 *usage = dane->mtlsa->usage;
1239 if (selector)
1240 *selector = dane->mtlsa->selector;
1241 if (mtype)
1242 *mtype = dane->mtlsa->mtype;
1243 if (data)
1244 *data = dane->mtlsa->data;
1245 if (dlen)
1246 *dlen = dane->mtlsa->dlen;
1247 }
1248 return dane->mdpth;
1249}
1250
b9aec69a 1251SSL_DANE *SSL_get0_dane(SSL *s)
919ba009 1252{
38b051a1
TM		 1253 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1254
1255 if (sc == NULL)
1256 return NULL;
1257
1258 return &sc->dane;
919ba009
VD		 1259}
1260
1261int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
6d4313f0 1262 uint8_t mtype, const unsigned char *data, size_t dlen)
919ba009 1263{
38b051a1
TM		 1264 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1265
1266 if (sc == NULL)
1267 return 0;
1268
1269 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
919ba009
VD		 1270}
1271
a230b26e
EK		 1272int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1273 uint8_t ord)
919ba009
VD		 1274{
1275 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1276}
1277
ccf11751 1278int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1279{
1280 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1281}
ccf11751
DSH		 1282
1283int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e 1284{
38b051a1
TM		 1285 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1286
1287 if (sc == NULL)
1288 return 0;
1289
1290 return X509_VERIFY_PARAM_set1(sc->param, vpm);
0f113f3e 1291}
ccf11751 1292
7af31968 1293X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1294{
1295 return ctx->param;
1296}
7af31968
DSH		 1297
1298X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e 1299{
38b051a1
TM		 1300 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1301
1302 if (sc == NULL)
1303 return NULL;
1304
1305 return sc->param;
0f113f3e 1306}
7af31968 1307
a5ee80b9 1308void SSL_certs_clear(SSL *s)
0f113f3e 1309{
38b051a1
TM		 1310 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1311
1312 if (sc == NULL)
1313 return;
1314
1315 ssl_cert_clear_certs(sc->cert);
0f113f3e 1316}
a5ee80b9 1317
4f43d0e7 1318void SSL_free(SSL *s)
0f113f3e
MC		 1319{
1320 int i;
58964a49 1321
e6e9170d
RS		 1322 if (s == NULL)
1323 return;
2f545ae4 1324 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1325 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1326 if (i > 0)
1327 return;
f3f1cf84 1328 REF_ASSERT_ISNT(i < 0);
d02b48c6 1329
38b051a1
TM		 1330 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1331
1332 if (s->method != NULL)
1333 s->method->ssl_free(s);
1334
1335 SSL_CTX_free(s->ctx);
1336 CRYPTO_THREAD_lock_free(s->lock);
1337
1338 OPENSSL_free(s);
1339}
1340
1341void ossl_ssl_connection_free(SSL *ssl)
1342{
1343 SSL_CONNECTION *s;
1344
1345 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1346 if (s == NULL)
1347 return;
1348
222561fe 1349 X509_VERIFY_PARAM_free(s->param);
919ba009 1350 dane_final(&s->dane);
0f113f3e 1351
b77f3ed1 1352 /* Ignore return value */
2e7dc7cd
MC		 1353 ssl_free_wbio_buffer(s);
1354
9ff51954
MC		 1355 RECORD_LAYER_clear(&s->rlayer);
1356
25aaa98a 1357 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1358
1359 /* add extra stuff */
25aaa98a
RS		 1360 sk_SSL_CIPHER_free(s->cipher_list);
1361 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1362 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
eee2a6a7 1363 sk_SSL_CIPHER_free(s->peer_ciphers);
0f113f3e
MC		 1364
1365 /* Make the next call work :-) */
1366 if (s->session != NULL) {
1367 ssl_clear_bad_session(s);
1368 SSL_SESSION_free(s->session);
1369 }
9368f865 1370 SSL_SESSION_free(s->psksession);
add8d0e9 1371 OPENSSL_free(s->psksession_id);
0f113f3e 1372
e0e920b1 1373 ssl_cert_free(s->cert);
29948ac8 1374 OPENSSL_free(s->shared_sigalgs);
0f113f3e 1375 /* Free up if allocated */
d02b48c6 1376
aff8c126 1377 OPENSSL_free(s->ext.hostname);
222da979 1378 SSL_CTX_free(s->session_ctx);
aff8c126 1379 OPENSSL_free(s->ext.ecpointformats);
cd0fb43c 1380 OPENSSL_free(s->ext.peer_ecpointformats);
aff8c126 1381 OPENSSL_free(s->ext.supportedgroups);
45436e61 1382 OPENSSL_free(s->ext.peer_supportedgroups);
aff8c126 1383 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1384#ifndef OPENSSL_NO_OCSP
aff8c126 1385 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1386#endif
ed29e82a
RP		 1387#ifndef OPENSSL_NO_CT
1388 SCT_LIST_free(s->scts);
aff8c126 1389 OPENSSL_free(s->ext.scts);
ed29e82a 1390#endif
aff8c126
RS		 1391 OPENSSL_free(s->ext.ocsp.resp);
1392 OPENSSL_free(s->ext.alpn);
cfef5027 1393 OPENSSL_free(s->ext.tls13_cookie);
94941cad
MK		 1394 if (s->clienthello != NULL)
1395 OPENSSL_free(s->clienthello->pre_proc_exts);
6b1bb98f 1396 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1397 OPENSSL_free(s->pha_context);
1398 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1399
fa7c2637 1400 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1401 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1402
79b2a2f2 1403 OSSL_STACK_OF_X509_free(s->verified_chain);
696178ed 1404
38b051a1
TM		 1405 if (ssl->method != NULL)
1406 ssl->method->ssl_deinit(ssl);
7c3908dd 1407
ff75a257
MC		 1408 ASYNC_WAIT_CTX_free(s->waitctx);
1409
e481f9b9 1410#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1411 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1412#endif
1413
e783bae2 1414#ifndef OPENSSL_NO_SRTP
25aaa98a 1415 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e 1416#endif
cd6e89b6
MC		 1417
1418 /*
1419 * We do this late. We want to ensure that any other references we held to
1420 * these BIOs are freed first *before* we call BIO_free_all(), because
1421 * BIO_free_all() will only free each BIO in the chain if the number of
1422 * references to the first BIO have dropped to 0
1423 */
1424 BIO_free_all(s->wbio);
1425 s->wbio = NULL;
1426 BIO_free_all(s->rbio);
1427 s->rbio = NULL;
0f113f3e
MC		 1428}
1429
65e2d672 1430void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1431{
38b051a1
TM		 1432 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1433
1434 if (sc == NULL)
1435 return;
1436
1437 BIO_free_all(sc->rbio);
1438 sc->rbio = rbio;
cffafb5f 1439 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
3ffbe008
MC		 1440}
1441
65e2d672 1442void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e 1443{
38b051a1
TM		 1444 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1445
1446 if (sc == NULL)
1447 return;
1448
0f113f3e
MC		 1449 /*
1450 * If the output buffering BIO is still in place, remove it
1451 */
38b051a1
TM		 1452 if (sc->bbio != NULL)
1453 sc->wbio = BIO_pop(sc->wbio);
2e7dc7cd 1454
38b051a1
TM		 1455 BIO_free_all(sc->wbio);
1456 sc->wbio = wbio;
2e7dc7cd
MC		 1457
1458 /* Re-attach |bbio| to the new |wbio|. */
38b051a1
TM		 1459 if (sc->bbio != NULL)
1460 sc->wbio = BIO_push(sc->bbio, sc->wbio);
b5cf81f7
MC		 1461
1462 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
0f113f3e 1463}
d02b48c6 1464
3ffbe008
MC		 1465void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1466{
65e2d672
MC		 1467 /*
1468 * For historical reasons, this function has many different cases in
1469 * ownership handling.
1470 */
1471
1472 /* If nothing has changed, do nothing */
1473 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1474 return;
1475
1476 /*
1477 * If the two arguments are equal then one fewer reference is granted by the
1478 * caller than we want to take
1479 */
1480 if (rbio != NULL && rbio == wbio)
1481 BIO_up_ref(rbio);
1482
1483 /*
1484 * If only the wbio is changed only adopt one reference.
1485 */
1486 if (rbio == SSL_get_rbio(s)) {
1487 SSL_set0_wbio(s, wbio);
1488 return;
1489 }
1490 /*
1491 * There is an asymmetry here for historical reasons. If only the rbio is
1492 * changed AND the rbio and wbio were originally different, then we only
1493 * adopt one reference.
1494 */
1495 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1496 SSL_set0_rbio(s, rbio);
1497 return;
1498 }
1499
1500 /* Otherwise, adopt both references. */
1501 SSL_set0_rbio(s, rbio);
1502 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1503}
1504
0821bcd4 1505BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1506{
38b051a1
TM		 1507 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1508
1509 if (sc == NULL)
1510 return NULL;
1511
1512 return sc->rbio;
0f113f3e 1513}
d02b48c6 1514
0821bcd4 1515BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1516{
38b051a1
TM		 1517 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1518
1519 if (sc == NULL)
1520 return NULL;
1521
1522 if (sc->bbio != NULL) {
2e7dc7cd
MC		 1523 /*
1524 * If |bbio| is active, the true caller-configured BIO is its
1525 * |next_bio|.
1526 */
38b051a1 1527 return BIO_next(sc->bbio);
2e7dc7cd 1528 }
38b051a1 1529 return sc->wbio;
0f113f3e 1530}
d02b48c6 1531
0821bcd4 1532int SSL_get_fd(const SSL *s)
0f113f3e 1533{
2e7dc7cd 1534 return SSL_get_rfd(s);
0f113f3e 1535}
24cbf3ef 1536
0821bcd4 1537int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1538{
1539 int ret = -1;
1540 BIO *b, *r;
1541
1542 b = SSL_get_rbio(s);
1543 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1544 if (r != NULL)
1545 BIO_get_fd(r, &ret);
26a7d938 1546 return ret;
0f113f3e 1547}
d02b48c6 1548
0821bcd4 1549int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1550{
1551 int ret = -1;
1552 BIO *b, *r;
1553
1554 b = SSL_get_wbio(s);
1555 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1556 if (r != NULL)
1557 BIO_get_fd(r, &ret);
26a7d938 1558 return ret;
0f113f3e 1559}
24cbf3ef 1560
bc36ee62 1561#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1562int SSL_set_fd(SSL *s, int fd)
1563{
1564 int ret = 0;
1565 BIO *bio = NULL;
1566
1567 bio = BIO_new(BIO_s_socket());
1568
1569 if (bio == NULL) {
6849b73c 1570 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
0f113f3e
MC		 1571 goto err;
1572 }
1573 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1574 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1575#ifndef OPENSSL_NO_KTLS
1576 /*
1577 * The new socket is created successfully regardless of ktls_enable.
1578 * ktls_enable doesn't change any functionality of the socket, except
1579 * changing the setsockopt to enable the processing of ktls_start.
1580 * Thus, it is not a problem to call it for non-TLS sockets.
1581 */
1582 ktls_enable(fd);
1583#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1584 ret = 1;
1585 err:
26a7d938 1586 return ret;
0f113f3e 1587}
d02b48c6 1588
0f113f3e
MC		 1589int SSL_set_wfd(SSL *s, int fd)
1590{
2e7dc7cd 1591 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1592
2e7dc7cd
MC		 1593 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1594 || (int)BIO_get_fd(rbio, NULL) != fd) {
1595 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1596
1597 if (bio == NULL) {
6849b73c 1598 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1599 return 0;
0f113f3e
MC		 1600 }
1601 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1602 SSL_set0_wbio(s, bio);
50ec7505
BP		 1603#ifndef OPENSSL_NO_KTLS
1604 /*
1605 * The new socket is created successfully regardless of ktls_enable.
1606 * ktls_enable doesn't change any functionality of the socket, except
1607 * changing the setsockopt to enable the processing of ktls_start.
1608 * Thus, it is not a problem to call it for non-TLS sockets.
1609 */
1610 ktls_enable(fd);
1611#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1612 } else {
65e2d672
MC		 1613 BIO_up_ref(rbio);
1614 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1615 }
1616 return 1;
0f113f3e
MC		 1617}
1618
1619int SSL_set_rfd(SSL *s, int fd)
1620{
2e7dc7cd 1621 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1622
2e7dc7cd
MC		 1623 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1624 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1625 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1626
1627 if (bio == NULL) {
6849b73c 1628 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1629 return 0;
0f113f3e
MC		 1630 }
1631 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1632 SSL_set0_rbio(s, bio);
2e7dc7cd 1633 } else {
65e2d672
MC		 1634 BIO_up_ref(wbio);
1635 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1636 }
1637
1638 return 1;
0f113f3e
MC		 1639}
1640#endif
ca03109c
BM		 1641
1642/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1643size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1644{
1645 size_t ret = 0;
38b051a1
TM		 1646 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1647
1648 if (sc == NULL)
1649 return 0;
0f113f3e 1650
38b051a1 1651 ret = sc->s3.tmp.finish_md_len;
555cbb32
TS		 1652 if (count > ret)
1653 count = ret;
38b051a1 1654 memcpy(buf, sc->s3.tmp.finish_md, count);
0f113f3e
MC		 1655 return ret;
1656}
ca03109c
BM		 1657
1658/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1659size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1660{
1661 size_t ret = 0;
38b051a1 1662 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
ca03109c 1663
38b051a1
TM		 1664 if (sc == NULL)
1665 return 0;
1666
1667 ret = sc->s3.tmp.peer_finish_md_len;
555cbb32
TS		 1668 if (count > ret)
1669 count = ret;
38b051a1 1670 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1671 return ret;
1672}
ca03109c 1673
0821bcd4 1674int SSL_get_verify_mode(const SSL *s)
0f113f3e 1675{
38b051a1
TM		 1676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1677
1678 if (sc == NULL)
1679 return 0;
1680
1681 return sc->verify_mode;
0f113f3e 1682}
d02b48c6 1683
0821bcd4 1684int SSL_get_verify_depth(const SSL *s)
0f113f3e 1685{
38b051a1
TM		 1686 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1687
1688 if (sc == NULL)
1689 return 0;
1690
1691 return X509_VERIFY_PARAM_get_depth(sc->param);
0f113f3e 1692}
7f89714e 1693
0f113f3e 1694int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
38b051a1
TM		 1695 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1696
1697 if (sc == NULL)
1698 return NULL;
1699
1700 return sc->verify_callback;
0f113f3e 1701}
d02b48c6 1702
0821bcd4 1703int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1704{
26a7d938 1705 return ctx->verify_mode;
0f113f3e 1706}
d02b48c6 1707
0821bcd4 1708int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1709{
1710 return X509_VERIFY_PARAM_get_depth(ctx->param);
1711}
1712
1713int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1714 return ctx->default_verify_callback;
0f113f3e
MC		 1715}
1716
1717void SSL_set_verify(SSL *s, int mode,
1718 int (*callback) (int ok, X509_STORE_CTX *ctx))
1719{
38b051a1
TM		 1720 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1721
1722 if (sc == NULL)
1723 return;
1724
1725 sc->verify_mode = mode;
0f113f3e 1726 if (callback != NULL)
38b051a1 1727 sc->verify_callback = callback;
0f113f3e
MC		 1728}
1729
1730void SSL_set_verify_depth(SSL *s, int depth)
1731{
38b051a1
TM		 1732 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1733
1734 if (sc == NULL)
1735 return;
1736
1737 X509_VERIFY_PARAM_set_depth(sc->param, depth);
0f113f3e
MC		 1738}
1739
1740void SSL_set_read_ahead(SSL *s, int yes)
1741{
38b051a1 1742 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4566dae7 1743 OSSL_PARAM options[2], *opts = options;
38b051a1
TM		 1744
1745 if (sc == NULL)
1746 return;
1747
1748 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
4566dae7
MC		 1749
1750 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1751 &sc->rlayer.read_ahead);
1752 *opts = OSSL_PARAM_construct_end();
1753
1754 /* Ignore return value */
1755 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
0f113f3e 1756}
d02b48c6 1757
0821bcd4 1758int SSL_get_read_ahead(const SSL *s)
0f113f3e 1759{
38b051a1
TM		 1760 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1761
1762 if (sc == NULL)
1763 return 0;
1764
1765 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
0f113f3e 1766}
d02b48c6 1767
0821bcd4 1768int SSL_pending(const SSL *s)
0f113f3e 1769{
8b0e934a
MC		 1770 size_t pending = s->method->ssl_pending(s);
1771
0f113f3e
MC		 1772 /*
1773 * SSL_pending cannot work properly if read-ahead is enabled
1774 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1775 * impossible to fix since SSL_pending cannot report errors that may be
1776 * observed while scanning the new data. (Note that SSL_pending() is
1777 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1778 *
1779 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1780 * we just return INT_MAX.
0f113f3e 1781 */
348240c6 1782 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1783}
d02b48c6 1784
49580f25
MC		 1785int SSL_has_pending(const SSL *s)
1786{
1787 /*
1788 * Similar to SSL_pending() but returns a 1 to indicate that we have
6d6b295a
MC		 1789 * processed or unprocessed data available or 0 otherwise (as opposed to the
1790 * number of bytes available). Unlike SSL_pending() this will take into
1791 * account read_ahead data. A 1 return simply indicates that we have data.
1792 * That data may not result in any application data, or we may fail to parse
1793 * the records for some reason.
49580f25 1794 */
38b051a1
TM		 1795 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1796
6d6b295a
MC		 1797 /* Check buffered app data if any first */
1798 if (SSL_CONNECTION_IS_DTLS(sc)) {
eddb067e 1799 TLS_RECORD *rdata;
6d6b295a
MC		 1800 pitem *item, *iter;
1801
1802 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1803 while ((item = pqueue_next(&iter)) != NULL) {
1804 rdata = item->data;
eddb067e 1805 if (rdata->length > 0)
6d6b295a
MC		 1806 return 1;
1807 }
1808 }
38b051a1
TM		 1809
1810 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
49580f25
MC		 1811 return 1;
1812
38b051a1 1813 return RECORD_LAYER_read_pending(&sc->rlayer);
49580f25
MC		 1814}
1815
8c2bfd25 1816X509 *SSL_get1_peer_certificate(const SSL *s)
0f113f3e 1817{
8c2bfd25 1818 X509 *r = SSL_get0_peer_certificate(s);
d02b48c6 1819
8c2bfd25
TS		 1820 if (r != NULL)
1821 X509_up_ref(r);
0f113f3e 1822
26a7d938 1823 return r;
0f113f3e 1824}
d02b48c6 1825
8c2bfd25
TS		 1826X509 *SSL_get0_peer_certificate(const SSL *s)
1827{
38b051a1
TM		 1828 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1829
1830 if (sc == NULL)
1831 return NULL;
1832
1833 if (sc->session == NULL)
8c2bfd25
TS		 1834 return NULL;
1835 else
38b051a1 1836 return sc->session->peer;
8c2bfd25
TS		 1837}
1838
0821bcd4 1839STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1840{
1841 STACK_OF(X509) *r;
38b051a1 1842 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
0f113f3e 1843
38b051a1
TM		 1844 if (sc == NULL)
1845 return NULL;
1846
1847 if (sc->session == NULL)
0f113f3e
MC		 1848 r = NULL;
1849 else
38b051a1 1850 r = sc->session->peer_chain;
0f113f3e
MC		 1851
1852 /*
1853 * If we are a client, cert_chain includes the peer's own certificate; if
1854 * we are a server, it does not.
1855 */
1856
26a7d938 1857 return r;
0f113f3e
MC		 1858}
1859
1860/*
1861 * Now in theory, since the calling process own 't' it should be safe to
1862 * modify. We need to be able to read f without being hassled
1863 */
17dd65e6 1864int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1865{
16203f7b 1866 int i;
38b051a1
TM		 1867 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1868 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1869 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1870
1871 if (tsc == NULL || fsc == NULL)
1872 return 0;
1873
3e6a0d57 1874 /* Do we need to do SSL locking? */
61986d32 1875 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1876 return 0;
69f68237 1877 }
0f113f3e
MC		 1878
1879 /*
87d9cafa 1880 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1881 */
1882 if (t->method != f->method) {
38b051a1 1883 t->method->ssl_deinit(t);
919ba009 1884 t->method = f->method;
38b051a1 1885 if (t->method->ssl_init(t) == 0)
919ba009 1886 return 0;
0f113f3e
MC		 1887 }
1888
38b051a1
TM		 1889 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1890 ssl_cert_free(tsc->cert);
1891 tsc->cert = fsc->cert;
1892 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
17dd65e6 1893 return 0;
69f68237 1894 }
17dd65e6
MC		 1895
1896 return 1;
0f113f3e 1897}
d02b48c6 1898
58964a49 1899/* Fix this so it checks all the valid key/cert options */
0821bcd4 1900int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1901{
a230b26e 1902 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
6849b73c 1903 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1904 return 0;
0f113f3e
MC		 1905 }
1906 if (ctx->cert->key->privatekey == NULL) {
6849b73c 1907 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1908 return 0;
0f113f3e 1909 }
26a7d938
K		 1910 return X509_check_private_key
1911 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1912}
d02b48c6 1913
58964a49 1914/* Fix this function so that it takes an optional type parameter */
0821bcd4 1915int SSL_check_private_key(const SSL *ssl)
0f113f3e 1916{
38b051a1
TM		 1917 const SSL_CONNECTION *sc;
1918
1919 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
6849b73c 1920 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1921 return 0;
0f113f3e 1922 }
38b051a1 1923 if (sc->cert->key->x509 == NULL) {
6849b73c 1924 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1925 return 0;
0f113f3e 1926 }
38b051a1 1927 if (sc->cert->key->privatekey == NULL) {
6849b73c 1928 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1929 return 0;
0f113f3e 1930 }
38b051a1
TM		 1931 return X509_check_private_key(sc->cert->key->x509,
1932 sc->cert->key->privatekey);
0f113f3e 1933}
d02b48c6 1934
07bbc92c
MC		 1935int SSL_waiting_for_async(SSL *s)
1936{
38b051a1
TM		 1937 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1938
1939 if (sc == NULL)
1940 return 0;
1941
1942 if (sc->job)
82676094
MC		 1943 return 1;
1944
07bbc92c
MC		 1945 return 0;
1946}
1947
ff75a257 1948int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1949{
38b051a1
TM		 1950 ASYNC_WAIT_CTX *ctx;
1951 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
ff75a257 1952
38b051a1
TM		 1953 if (sc == NULL)
1954 return 0;
1955
1956 if ((ctx = sc->waitctx) == NULL)
ff75a257
MC		 1957 return 0;
1958 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1959}
f4da39d2 1960
ff75a257
MC		 1961int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1962 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1963{
38b051a1
TM		 1964 ASYNC_WAIT_CTX *ctx;
1965 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
ff75a257 1966
38b051a1
TM		 1967 if (sc == NULL)
1968 return 0;
1969
1970 if ((ctx = sc->waitctx) == NULL)
ff75a257
MC		 1971 return 0;
1972 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1973 numdelfds);
f4da39d2
MC		 1974}
1975
9f5a87fd
PY		 1976int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1977{
1978 ctx->async_cb = callback;
1979 return 1;
1980}
1981
1982int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1983{
1984 ctx->async_cb_arg = arg;
1985 return 1;
1986}
1987
1988int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1989{
38b051a1
TM		 1990 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1991
1992 if (sc == NULL)
1993 return 0;
1994
1995 sc->async_cb = callback;
9f5a87fd
PY		 1996 return 1;
1997}
1998
1999int SSL_set_async_callback_arg(SSL *s, void *arg)
2000{
38b051a1
TM		 2001 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2002
2003 if (sc == NULL)
2004 return 0;
2005
2006 sc->async_cb_arg = arg;
9f5a87fd
PY		 2007 return 1;
2008}
2009
2010int SSL_get_async_status(SSL *s, int *status)
2011{
38b051a1
TM		 2012 ASYNC_WAIT_CTX *ctx;
2013 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
9f5a87fd 2014
38b051a1
TM		 2015 if (sc == NULL)
2016 return 0;
2017
2018 if ((ctx = sc->waitctx) == NULL)
9f5a87fd
PY		 2019 return 0;
2020 *status = ASYNC_WAIT_CTX_get_status(ctx);
2021 return 1;
2022}
2023
4f43d0e7 2024int SSL_accept(SSL *s)
0f113f3e 2025{
38b051a1
TM		 2026 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2027
2028 if (sc == NULL)
2029 return 0;
2030
2031 if (sc->handshake_func == NULL) {
0f113f3e
MC		 2032 /* Not properly initialized yet */
2033 SSL_set_accept_state(s);
07bbc92c 2034 }
add2f5ca
MC		 2035
2036 return SSL_do_handshake(s);
0f113f3e 2037}
d02b48c6 2038
4f43d0e7 2039int SSL_connect(SSL *s)
0f113f3e 2040{
38b051a1
TM		 2041 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2042
2043 if (sc == NULL)
2044 return 0;
2045
2046 if (sc->handshake_func == NULL) {
0f113f3e
MC		 2047 /* Not properly initialized yet */
2048 SSL_set_connect_state(s);
add2f5ca 2049 }
b31b04d9 2050
add2f5ca 2051 return SSL_do_handshake(s);
0f113f3e 2052}
d02b48c6 2053
0821bcd4 2054long SSL_get_default_timeout(const SSL *s)
0f113f3e 2055{
f0131dc0 2056 return (long int)ossl_time2seconds(s->method->get_timeout());
0f113f3e
MC		 2057}
2058
9f5a87fd
PY		 2059static int ssl_async_wait_ctx_cb(void *arg)
2060{
2061 SSL *s = (SSL *)arg;
38b051a1 2062 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
9f5a87fd 2063
38b051a1
TM		 2064 if (sc == NULL)
2065 return 0;
2066
2067 return sc->async_cb(s, sc->async_cb_arg);
9f5a87fd
PY		 2068}
2069
7fecbf6f 2070static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 2071 int (*func) (void *))
2072{
add2f5ca 2073 int ret;
38b051a1
TM		 2074 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2075
2076 if (sc == NULL)
2077 return 0;
2078
2079 if (sc->waitctx == NULL) {
2080 sc->waitctx = ASYNC_WAIT_CTX_new();
2081 if (sc->waitctx == NULL)
ff75a257 2082 return -1;
38b051a1 2083 if (sc->async_cb != NULL
9f5a87fd 2084 && !ASYNC_WAIT_CTX_set_callback
38b051a1 2085 (sc->waitctx, ssl_async_wait_ctx_cb, s))
9f5a87fd 2086 return -1;
ff75a257 2087 }
07f620e3 2088
38b051a1
TM		 2089 sc->rwstate = SSL_NOTHING;
2090 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
a230b26e 2091 sizeof(struct ssl_async_args))) {
add2f5ca 2092 case ASYNC_ERR:
38b051a1 2093 sc->rwstate = SSL_NOTHING;
6849b73c 2094 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 2095 return -1;
2096 case ASYNC_PAUSE:
38b051a1 2097 sc->rwstate = SSL_ASYNC_PAUSED;
add2f5ca 2098 return -1;
fc7f190c 2099 case ASYNC_NO_JOBS:
38b051a1 2100 sc->rwstate = SSL_ASYNC_NO_JOBS;
fc7f190c 2101 return -1;
add2f5ca 2102 case ASYNC_FINISH:
38b051a1 2103 sc->job = NULL;
add2f5ca
MC		 2104 return ret;
2105 default:
38b051a1 2106 sc->rwstate = SSL_NOTHING;
6849b73c 2107 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 2108 /* Shouldn't happen */
2109 return -1;
2110 }
2111}
07bbc92c 2112
add2f5ca 2113static int ssl_io_intern(void *vargs)
07bbc92c
MC		 2114{
2115 struct ssl_async_args *args;
2116 SSL *s;
2117 void *buf;
348240c6 2118 size_t num;
38b051a1 2119 SSL_CONNECTION *sc;
07bbc92c
MC		 2120
2121 args = (struct ssl_async_args *)vargs;
2122 s = args->s;
2123 buf = args->buf;
2124 num = args->num;
38b051a1
TM		 2125 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2126 return -1;
2127
ec447924
MC		 2128 switch (args->type) {
2129 case READFUNC:
38b051a1 2130 return args->f.func_read(s, buf, num, &sc->asyncrw);
ec447924 2131 case WRITEFUNC:
38b051a1 2132 return args->f.func_write(s, buf, num, &sc->asyncrw);
ec447924
MC		 2133 case OTHERFUNC:
2134 return args->f.func_other(s);
2135 }
2136 return -1;
07bbc92c
MC		 2137}
2138
4ee7d3f9 2139int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 2140{
38b051a1
TM		 2141 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2142
2143 if (sc == NULL)
2144 return -1;
2145
2146 if (sc->handshake_func == NULL) {
6849b73c 2147 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2148 return -1;
2149 }
2150
38b051a1
TM		 2151 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2152 sc->rwstate = SSL_NOTHING;
4ee7d3f9 2153 return 0;
0f113f3e 2154 }
07bbc92c 2155
38b051a1
TM		 2156 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2157 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
6849b73c 2158 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
0a5ece5b
MC		 2159 return 0;
2160 }
564547e4
MC		 2161 /*
2162 * If we are a client and haven't received the ServerHello etc then we
2163 * better do that
2164 */
38b051a1 2165 ossl_statem_check_finish_init(sc, 0);
0a5ece5b 2166
38b051a1 2167 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 2168 struct ssl_async_args args;
eda75751 2169 int ret;
add2f5ca
MC		 2170
2171 args.s = s;
2172 args.buf = buf;
2173 args.num = num;
ec447924
MC		 2174 args.type = READFUNC;
2175 args.f.func_read = s->method->ssl_read;
add2f5ca 2176
eda75751 2177 ret = ssl_start_async_job(s, &args, ssl_io_intern);
38b051a1 2178 *readbytes = sc->asyncrw;
eda75751 2179 return ret;
07bbc92c 2180 } else {
54105ddd 2181 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 2182 }
0f113f3e
MC		 2183}
2184
4ee7d3f9 2185int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 2186{
2187 int ret;
54105ddd 2188 size_t readbytes;
eda75751
MC		 2189
2190 if (num < 0) {
6849b73c 2191 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
eda75751
MC		 2192 return -1;
2193 }
2194
4ee7d3f9 2195 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 2196
2197 /*
2198 * The cast is safe here because ret should be <= INT_MAX because num is
2199 * <= INT_MAX
2200 */
2201 if (ret > 0)
54105ddd 2202 ret = (int)readbytes;
eda75751
MC		 2203
2204 return ret;
2205}
2206
4ee7d3f9
KR		 2207int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2208{
2209 int ret = ssl_read_internal(s, buf, num, readbytes);
2210
2211 if (ret < 0)
2212 ret = 0;
2213 return ret;
2214}
2215
f533fbd4 2216int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 2217{
2218 int ret;
38b051a1
TM		 2219 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2220
2221 /* TODO(QUIC): This will need special handling for QUIC */
2222 if (sc == NULL)
2223 return 0;
d781d247 2224
38b051a1 2225 if (!sc->server) {
6849b73c 2226 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 2227 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2228 }
2229
38b051a1 2230 switch (sc->early_data_state) {
d781d247
MC		 2231 case SSL_EARLY_DATA_NONE:
2232 if (!SSL_in_before(s)) {
6849b73c 2233 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 2234 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2235 }
2236 /* fall through */
2237
2238 case SSL_EARLY_DATA_ACCEPT_RETRY:
38b051a1 2239 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
d781d247
MC		 2240 ret = SSL_accept(s);
2241 if (ret <= 0) {
2242 /* NBIO or error */
38b051a1 2243 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 2244 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2245 }
2246 /* fall through */
2247
2248 case SSL_EARLY_DATA_READ_RETRY:
38b051a1
TM		 2249 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2250 sc->early_data_state = SSL_EARLY_DATA_READING;
d781d247
MC		 2251 ret = SSL_read_ex(s, buf, num, readbytes);
2252 /*
ef6c191b
MC		 2253 * State machine will update early_data_state to
2254 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2255 * message
d781d247 2256 */
38b051a1 2257 if (ret > 0 || (ret <= 0 && sc->early_data_state
d781d247 2258 != SSL_EARLY_DATA_FINISHED_READING)) {
38b051a1 2259 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 2260 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2261 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2262 }
2263 } else {
38b051a1 2264 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
d781d247
MC		 2265 }
2266 *readbytes = 0;
f533fbd4 2267 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 2268
2269 default:
6849b73c 2270 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 2271 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2272 }
2273}
2274
f5b519c4 2275int SSL_get_early_data_status(const SSL *s)
1ea4d09a 2276{
38b051a1
TM		 2277 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2278
2279 /* TODO(QUIC): This will need special handling for QUIC */
2280 if (sc == NULL)
2281 return 0;
2282
2283 return sc->ext.early_data;
1ea4d09a
MC		 2284}
2285
4ee7d3f9 2286static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 2287{
38b051a1
TM		 2288 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2289
2290 if (sc == NULL)
2291 return 0;
2292
2293 if (sc->handshake_func == NULL) {
6849b73c 2294 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2295 return -1;
2296 }
2297
38b051a1 2298 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 2299 return 0;
0f113f3e 2300 }
38b051a1 2301 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 2302 struct ssl_async_args args;
eda75751 2303 int ret;
0f113f3e 2304
add2f5ca
MC		 2305 args.s = s;
2306 args.buf = buf;
2307 args.num = num;
ec447924
MC		 2308 args.type = READFUNC;
2309 args.f.func_read = s->method->ssl_peek;
07bbc92c 2310
eda75751 2311 ret = ssl_start_async_job(s, &args, ssl_io_intern);
38b051a1 2312 *readbytes = sc->asyncrw;
eda75751 2313 return ret;
add2f5ca 2314 } else {
54105ddd 2315 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 2316 }
07bbc92c
MC		 2317}
2318
4ee7d3f9 2319int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 2320{
2321 int ret;
4ee7d3f9 2322 size_t readbytes;
7ee8627f
MC		 2323
2324 if (num < 0) {
6849b73c 2325 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
7ee8627f
MC		 2326 return -1;
2327 }
2328
4ee7d3f9 2329 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 2330
2331 /*
2332 * The cast is safe here because ret should be <= INT_MAX because num is
2333 * <= INT_MAX
2334 */
2335 if (ret > 0)
4ee7d3f9 2336 ret = (int)readbytes;
7ee8627f
MC		 2337
2338 return ret;
2339}
2340
4ee7d3f9
KR		 2341
2342int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2343{
2344 int ret = ssl_peek_internal(s, buf, num, readbytes);
2345
2346 if (ret < 0)
2347 ret = 0;
2348 return ret;
2349}
2350
2351int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 2352{
38b051a1
TM		 2353 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2354
2355 if (sc == NULL)
2356 return 0;
2357
2358 if (sc->handshake_func == NULL) {
6849b73c 2359 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2360 return -1;
2361 }
2362
38b051a1
TM		 2363 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2364 sc->rwstate = SSL_NOTHING;
6849b73c 2365 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
4ee7d3f9 2366 return -1;
0f113f3e 2367 }
07bbc92c 2368
38b051a1
TM		 2369 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2370 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2371 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
6849b73c 2372 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 2373 return 0;
0a5ece5b 2374 }
564547e4 2375 /* If we are a client and haven't sent the Finished we better do that */
38b051a1 2376 ossl_statem_check_finish_init(sc, 1);
49e7fe12 2377
38b051a1 2378 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 2379 int ret;
add2f5ca
MC		 2380 struct ssl_async_args args;
2381
2382 args.s = s;
2383 args.buf = (void *)buf;
2384 args.num = num;
ec447924
MC		 2385 args.type = WRITEFUNC;
2386 args.f.func_write = s->method->ssl_write;
add2f5ca 2387
7ee8627f 2388 ret = ssl_start_async_job(s, &args, ssl_io_intern);
38b051a1 2389 *written = sc->asyncrw;
7ee8627f 2390 return ret;
07bbc92c 2391 } else {
7ee8627f 2392 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2393 }
0f113f3e 2394}
d02b48c6 2395
7c3a7561
BP		 2396ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2397{
2398 ossl_ssize_t ret;
38b051a1 2399 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7c3a7561 2400
38b051a1
TM		 2401 if (sc == NULL)
2402 return 0;
2403
2404 if (sc->handshake_func == NULL) {
6849b73c 2405 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2406 return -1;
2407 }
2408
38b051a1
TM		 2409 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2410 sc->rwstate = SSL_NOTHING;
6849b73c 2411 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
7c3a7561
BP		 2412 return -1;
2413 }
2414
38b051a1 2415 if (!BIO_get_ktls_send(sc->wbio)) {
6849b73c 2416 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2417 return -1;
2418 }
2419
2420 /* If we have an alert to send, lets send it */
38b051a1 2421 if (sc->s3.alert_dispatch) {
7c3a7561
BP		 2422 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2423 if (ret <= 0) {
2424 /* SSLfatal() already called if appropriate */
2425 return ret;
2426 }
2427 /* if it went, fall through and send more stuff */
2428 }
2429
38b051a1
TM		 2430 sc->rwstate = SSL_WRITING;
2431 if (BIO_flush(sc->wbio) <= 0) {
2432 if (!BIO_should_retry(sc->wbio)) {
2433 sc->rwstate = SSL_NOTHING;
7c3a7561
BP		 2434 } else {
2435#ifdef EAGAIN
2436 set_sys_error(EAGAIN);
2437#endif
2438 }
2439 return -1;
2440 }
2441
712c0942 2442#ifdef OPENSSL_NO_KTLS
fa7a8074
RL		 2443 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2444 "can't call ktls_sendfile(), ktls disabled");
712c0942 2445 return -1;
7c3a7561 2446#else
712c0942 2447 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
7c3a7561
BP		 2448 if (ret < 0) {
2449#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2450 if ((get_last_sys_error() == EAGAIN) ||
2451 (get_last_sys_error() == EINTR) ||
2452 (get_last_sys_error() == EBUSY))
38b051a1 2453 BIO_set_retry_write(sc->wbio);
7c3a7561
BP		 2454 else
2455#endif
6849b73c 2456 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2457 return ret;
2458 }
38b051a1 2459 sc->rwstate = SSL_NOTHING;
7c3a7561 2460 return ret;
712c0942 2461#endif
7c3a7561
BP		 2462}
2463
4ee7d3f9
KR		 2464int SSL_write(SSL *s, const void *buf, int num)
2465{
2466 int ret;
2467 size_t written;
2468
2469 if (num < 0) {
6849b73c 2470 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
4ee7d3f9
KR		 2471 return -1;
2472 }
2473
2474 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2475
2476 /*
2477 * The cast is safe here because ret should be <= INT_MAX because num is
2478 * <= INT_MAX
2479 */
2480 if (ret > 0)
2481 ret = (int)written;
2482
2483 return ret;
2484}
2485
2486int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2487{
2488 int ret = ssl_write_internal(s, buf, num, written);
2489
2490 if (ret < 0)
2491 ret = 0;
2492 return ret;
2493}
2494
0665b4ed 2495int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2496{
a0cb628b 2497 int ret, early_data_state;
2a8db717 2498 size_t writtmp;
f7414b08 2499 uint32_t partialwrite;
38b051a1
TM		 2500 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2501
2502 /* TODO(QUIC): This will need special handling for QUIC */
2503 if (sc == NULL)
2504 return 0;
49e7fe12 2505
38b051a1 2506 switch (sc->early_data_state) {
49e7fe12 2507 case SSL_EARLY_DATA_NONE:
38b051a1 2508 if (sc->server
09f28874 2509 || !SSL_in_before(s)
38b051a1
TM		 2510 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2511 && (sc->psk_use_session_cb == NULL))) {
6849b73c 2512 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2513 return 0;
2514 }
2515 /* fall through */
2516
2517 case SSL_EARLY_DATA_CONNECT_RETRY:
38b051a1 2518 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
49e7fe12
MC		 2519 ret = SSL_connect(s);
2520 if (ret <= 0) {
2521 /* NBIO or error */
38b051a1 2522 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
49e7fe12
MC		 2523 return 0;
2524 }
2525 /* fall through */
2526
2527 case SSL_EARLY_DATA_WRITE_RETRY:
38b051a1 2528 sc->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2529 /*
2530 * We disable partial write for early data because we don't keep track
2531 * of how many bytes we've written between the SSL_write_ex() call and
2532 * the flush if the flush needs to be retried)
2533 */
38b051a1
TM		 2534 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2535 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2536 ret = SSL_write_ex(s, buf, num, &writtmp);
38b051a1 2537 sc->mode |= partialwrite;
2a8db717 2538 if (!ret) {
38b051a1 2539 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717
MC		 2540 return ret;
2541 }
38b051a1 2542 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2a8db717
MC		 2543 /* fall through */
2544
2545 case SSL_EARLY_DATA_WRITE_FLUSH:
2546 /* The buffering BIO is still in place so we need to flush it */
38b051a1 2547 if (statem_flush(sc) != 1)
2a8db717 2548 return 0;
2a8db717 2549 *written = num;
38b051a1 2550 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2551 return 1;
49e7fe12 2552
116d0da5 2553 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b 2554 case SSL_EARLY_DATA_READ_RETRY:
38b051a1 2555 early_data_state = sc->early_data_state;
09f28874 2556 /* We are a server writing to an unauthenticated client */
38b051a1 2557 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
09f28874 2558 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2559 /* The buffering BIO is still in place */
2560 if (ret)
38b051a1
TM		 2561 (void)BIO_flush(sc->wbio);
2562 sc->early_data_state = early_data_state;
09f28874
MC		 2563 return ret;
2564
49e7fe12 2565 default:
6849b73c 2566 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2567 return 0;
2568 }
2569}
2570
4f43d0e7 2571int SSL_shutdown(SSL *s)
0f113f3e
MC		 2572{
2573 /*
2574 * Note that this function behaves differently from what one might
2575 * expect. Return values are 0 for no success (yet), 1 for success; but
2576 * calling it once is usually not enough, even if blocking I/O is used
2577 * (see ssl3_shutdown).
2578 */
38b051a1 2579 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
0f113f3e 2580
38b051a1
TM		 2581 if (sc == NULL)
2582 return -1;
2583
2584 if (sc->handshake_func == NULL) {
6849b73c 2585 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2586 return -1;
2587 }
2588
64f9f406 2589 if (!SSL_in_init(s)) {
38b051a1 2590 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2591 struct ssl_async_args args;
ec447924 2592
09134f18 2593 memset(&args, 0, sizeof(args));
64f9f406
MC		 2594 args.s = s;
2595 args.type = OTHERFUNC;
2596 args.f.func_other = s->method->ssl_shutdown;
ec447924 2597
64f9f406
MC		 2598 return ssl_start_async_job(s, &args, ssl_io_intern);
2599 } else {
2600 return s->method->ssl_shutdown(s);
2601 }
ec447924 2602 } else {
6849b73c 2603 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
64f9f406 2604 return -1;
ec447924 2605 }
0f113f3e 2606}
d02b48c6 2607
4fbfe86a 2608int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2609{
38b051a1
TM		 2610 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2611
2612 if (sc == NULL)
2613 return 0;
2614
2615 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6849b73c 2616 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
44c04a2e
MC		 2617 return 0;
2618 }
2619
2620 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2621 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
6849b73c 2622 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
44c04a2e
MC		 2623 return 0;
2624 }
2625
2626 if (!SSL_is_init_finished(s)) {
6849b73c 2627 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
44c04a2e
MC		 2628 return 0;
2629 }
2630
38b051a1 2631 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
3bec4851
MC		 2632 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2633 return 0;
2634 }
2635
38b051a1
TM		 2636 ossl_statem_set_in_init(sc, 1);
2637 sc->key_update = updatetype;
44c04a2e
MC		 2638 return 1;
2639}
2640
3499327b 2641int SSL_get_key_update_type(const SSL *s)
53d1d07d 2642{
38b051a1
TM		 2643 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2644
2645 if (sc == NULL)
2646 return 0;
2647
2648 return sc->key_update;
53d1d07d
MC		 2649}
2650
55373bfd
RS		 2651/*
2652 * Can we accept a renegotiation request? If yes, set the flag and
2653 * return 1 if yes. If not, raise error and return 0.
2654 */
38b051a1 2655static int can_renegotiate(const SSL_CONNECTION *sc)
0f113f3e 2656{
38b051a1 2657 if (SSL_CONNECTION_IS_TLS13(sc)) {
6849b73c 2658 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2659 return 0;
44c04a2e 2660 }
cda6b998 2661
38b051a1 2662 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
6849b73c 2663 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
db0f35dd
TS		 2664 return 0;
2665 }
44959ee4 2666
55373bfd
RS		 2667 return 1;
2668}
2669
2670int SSL_renegotiate(SSL *s)
2671{
38b051a1
TM		 2672 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2673
2674 if (sc == NULL)
55373bfd
RS		 2675 return 0;
2676
38b051a1
TM		 2677 if (!can_renegotiate(sc))
2678 return 0;
2679
2680 sc->renegotiate = 1;
2681 sc->new_session = 1;
26a7d938 2682 return s->method->ssl_renegotiate(s);
0f113f3e 2683}
d02b48c6 2684
44959ee4 2685int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2686{
38b051a1
TM		 2687 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2688
2689 if (sc == NULL)
2690 return 0;
2691
2692 if (!can_renegotiate(sc))
2c0980d2 2693 return 0;
c519e89f 2694
38b051a1
TM		 2695 sc->renegotiate = 1;
2696 sc->new_session = 0;
26a7d938 2697 return s->method->ssl_renegotiate(s);
0f113f3e 2698}
44959ee4 2699
3499327b 2700int SSL_renegotiate_pending(const SSL *s)
0f113f3e 2701{
38b051a1
TM		 2702 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2703
2704 if (sc == NULL)
2705 return 0;
2706
0f113f3e
MC		 2707 /*
2708 * becomes true when negotiation is requested; false again once a
2709 * handshake has finished
2710 */
38b051a1 2711 return (sc->renegotiate != 0);
0f113f3e
MC		 2712}
2713
3bfacb5f
BK		 2714int SSL_new_session_ticket(SSL *s)
2715{
38b051a1
TM		 2716 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2717
2718 if (sc == NULL)
2719 return 0;
2720
7c73fefe 2721 /* If we are in init because we're sending tickets, okay to send more. */
38b051a1
TM		 2722 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2723 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2724 || !SSL_CONNECTION_IS_TLS13(sc))
35774d55 2725 return 0;
38b051a1
TM		 2726 sc->ext.extra_tickets_expected++;
2727 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2728 ossl_statem_set_in_init(sc, 1);
35774d55 2729 return 1;
3bfacb5f
BK		 2730}
2731
0f113f3e
MC		 2732long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2733{
2734 long l;
38b051a1
TM		 2735 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2736
2737 /* TODO(QUIC): Special handling for some ctrls will be needed */
2738 if (sc == NULL)
2739 return 0;
0f113f3e
MC		 2740
2741 switch (cmd) {
2742 case SSL_CTRL_GET_READ_AHEAD:
38b051a1 2743 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
0f113f3e 2744 case SSL_CTRL_SET_READ_AHEAD:
38b051a1
TM		 2745 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2746 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
26a7d938 2747 return l;
0f113f3e
MC		 2748
2749 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
38b051a1 2750 sc->msg_callback_arg = parg;
0f113f3e
MC		 2751 return 1;
2752
0f113f3e 2753 case SSL_CTRL_MODE:
4566dae7
MC		 2754 {
2755 OSSL_PARAM options[2], *opts = options;
2756
2757 sc->mode |= larg;
2758
2759 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2760 &sc->mode);
2761 *opts = OSSL_PARAM_construct_end();
2762
2763 /* Ignore return value */
2764 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2765
2766 return sc->mode;
2767 }
0f113f3e 2768 case SSL_CTRL_CLEAR_MODE:
38b051a1 2769 return (sc->mode &= ~larg);
0f113f3e 2770 case SSL_CTRL_GET_MAX_CERT_LIST:
38b051a1 2771 return (long)sc->max_cert_list;
0f113f3e 2772 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2773 if (larg < 0)
2774 return 0;
38b051a1
TM		 2775 l = (long)sc->max_cert_list;
2776 sc->max_cert_list = (size_t)larg;
348240c6 2777 return l;
0f113f3e
MC		 2778 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2779 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2780 return 0;
50ec7505 2781#ifndef OPENSSL_NO_KTLS
38b051a1 2782 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
50ec7505
BP		 2783 return 0;
2784#endif /* OPENSSL_NO_KTLS */
38b051a1
TM		 2785 sc->max_send_fragment = larg;
2786 if (sc->max_send_fragment < sc->split_send_fragment)
2787 sc->split_send_fragment = sc->max_send_fragment;
435d88d7 2788 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
d102d9df
MC		 2789 return 1;
2790 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
38b051a1 2791 if ((size_t)larg > sc->max_send_fragment || larg == 0)
d102d9df 2792 return 0;
38b051a1 2793 sc->split_send_fragment = larg;
0f113f3e 2794 return 1;
d102d9df
MC		 2795 case SSL_CTRL_SET_MAX_PIPELINES:
2796 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2797 return 0;
38b051a1 2798 sc->max_pipelines = larg;
cffafb5f
MC		 2799 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2800 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
07077415 2801 return 1;
0f113f3e 2802 case SSL_CTRL_GET_RI_SUPPORT:
38b051a1 2803 return sc->s3.send_connection_binding;
dfb39f73 2804 case SSL_CTRL_SET_RETRY_VERIFY:
38b051a1 2805 sc->rwstate = SSL_RETRY_VERIFY;
dfb39f73 2806 return 1;
0f113f3e 2807 case SSL_CTRL_CERT_FLAGS:
38b051a1 2808 return (sc->cert->cert_flags |= larg);
0f113f3e 2809 case SSL_CTRL_CLEAR_CERT_FLAGS:
38b051a1 2810 return (sc->cert->cert_flags &= ~larg);
0f113f3e
MC		 2811
2812 case SSL_CTRL_GET_RAW_CIPHERLIST:
2813 if (parg) {
38b051a1 2814 if (sc->s3.tmp.ciphers_raw == NULL)
0f113f3e 2815 return 0;
38b051a1
TM		 2816 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2817 return (int)sc->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2818 } else {
2819 return TLS_CIPHER_LEN;
2820 }
c5364614 2821 case SSL_CTRL_GET_EXTMS_SUPPORT:
38b051a1 2822 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
a230b26e 2823 return -1;
38b051a1 2824 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2825 return 1;
2826 else
2827 return 0;
7946ab33 2828 case SSL_CTRL_SET_MIN_PROTO_VERSION:
38b051a1 2829 return ssl_check_allowed_versions(larg, sc->max_proto_version)
c8feba72 2830 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
38b051a1 2831 &sc->min_proto_version);
3edabd3c 2832 case SSL_CTRL_GET_MIN_PROTO_VERSION:
38b051a1 2833 return sc->min_proto_version;
7946ab33 2834 case SSL_CTRL_SET_MAX_PROTO_VERSION:
38b051a1 2835 return ssl_check_allowed_versions(sc->min_proto_version, larg)
c8feba72 2836 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
38b051a1 2837 &sc->max_proto_version);
3edabd3c 2838 case SSL_CTRL_GET_MAX_PROTO_VERSION:
38b051a1 2839 return sc->max_proto_version;
0f113f3e 2840 default:
26a7d938 2841 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2842 }
2843}
2844
2845long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2846{
38b051a1
TM		 2847 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2848
2849 if (sc == NULL)
2850 return 0;
2851
0f113f3e
MC		 2852 switch (cmd) {
2853 case SSL_CTRL_SET_MSG_CALLBACK:
38b051a1
TM		 2854 sc->msg_callback = (void (*)
2855 (int write_p, int version, int content_type,
2856 const void *buf, size_t len, SSL *ssl,
2857 void *arg))(fp);
0f113f3e
MC		 2858 return 1;
2859
2860 default:
26a7d938 2861 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2862 }
2863}
d3442bc7 2864
3c1d6bbc 2865LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2866{
2867 return ctx->sessions;
2868}
2869
acce0557
P		 2870static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2871{
2872 int res = 0;
2873
2874 if (ssl_tsan_lock(ctx)) {
2875 res = tsan_load(stat);
2876 ssl_tsan_unlock(ctx);
2877 }
2878 return res;
2879}
2880
0f113f3e
MC		 2881long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2882{
2883 long l;
2884 /* For some cases with ctx == NULL perform syntax checks */
2885 if (ctx == NULL) {
2886 switch (cmd) {
de4d764e 2887 case SSL_CTRL_SET_GROUPS_LIST:
260009d8 2888 return tls1_set_groups_list(ctx, NULL, NULL, parg);
0f113f3e
MC		 2889 case SSL_CTRL_SET_SIGALGS_LIST:
2890 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2891 return tls1_set_sigalgs_list(NULL, parg, 0);
2892 default:
2893 return 0;
2894 }
2895 }
2896
2897 switch (cmd) {
2898 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2899 return ctx->read_ahead;
0f113f3e
MC		 2900 case SSL_CTRL_SET_READ_AHEAD:
2901 l = ctx->read_ahead;
2902 ctx->read_ahead = larg;
26a7d938 2903 return l;
0f113f3e
MC		 2904
2905 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2906 ctx->msg_callback_arg = parg;
2907 return 1;
2908
2909 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2910 return (long)ctx->max_cert_list;
0f113f3e 2911 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2912 if (larg < 0)
2913 return 0;
2914 l = (long)ctx->max_cert_list;
2915 ctx->max_cert_list = (size_t)larg;
2916 return l;
0f113f3e
MC		 2917
2918 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2919 if (larg < 0)
2920 return 0;
2921 l = (long)ctx->session_cache_size;
2922 ctx->session_cache_size = (size_t)larg;
2923 return l;
0f113f3e 2924 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2925 return (long)ctx->session_cache_size;
0f113f3e
MC		 2926 case SSL_CTRL_SET_SESS_CACHE_MODE:
2927 l = ctx->session_cache_mode;
2928 ctx->session_cache_mode = larg;
26a7d938 2929 return l;
0f113f3e 2930 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2931 return ctx->session_cache_mode;
0f113f3e
MC		 2932
2933 case SSL_CTRL_SESS_NUMBER:
26a7d938 2934 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2935 case SSL_CTRL_SESS_CONNECT:
acce0557 2936 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
0f113f3e 2937 case SSL_CTRL_SESS_CONNECT_GOOD:
acce0557 2938 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
0f113f3e 2939 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
acce0557 2940 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
0f113f3e 2941 case SSL_CTRL_SESS_ACCEPT:
acce0557 2942 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
0f113f3e 2943 case SSL_CTRL_SESS_ACCEPT_GOOD:
acce0557 2944 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
0f113f3e 2945 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
acce0557 2946 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
0f113f3e 2947 case SSL_CTRL_SESS_HIT:
acce0557 2948 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
0f113f3e 2949 case SSL_CTRL_SESS_CB_HIT:
acce0557 2950 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
0f113f3e 2951 case SSL_CTRL_SESS_MISSES:
acce0557 2952 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
0f113f3e 2953 case SSL_CTRL_SESS_TIMEOUTS:
acce0557 2954 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
0f113f3e 2955 case SSL_CTRL_SESS_CACHE_FULL:
acce0557 2956 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
0f113f3e
MC		 2957 case SSL_CTRL_MODE:
2958 return (ctx->mode |= larg);
2959 case SSL_CTRL_CLEAR_MODE:
2960 return (ctx->mode &= ~larg);
2961 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2962 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2963 return 0;
2964 ctx->max_send_fragment = larg;
d102d9df 2965 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2966 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2967 return 1;
d102d9df 2968 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2969 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2970 return 0;
2971 ctx->split_send_fragment = larg;
2972 return 1;
2973 case SSL_CTRL_SET_MAX_PIPELINES:
2974 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2975 return 0;
2976 ctx->max_pipelines = larg;
07077415 2977 return 1;
0f113f3e
MC		 2978 case SSL_CTRL_CERT_FLAGS:
2979 return (ctx->cert->cert_flags |= larg);
2980 case SSL_CTRL_CLEAR_CERT_FLAGS:
2981 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2982 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2983 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2984 && ssl_set_version_bound(ctx->method->version, (int)larg,
2985 &ctx->min_proto_version);
3edabd3c
CH		 2986 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2987 return ctx->min_proto_version;
7946ab33 2988 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2989 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2990 && ssl_set_version_bound(ctx->method->version, (int)larg,
2991 &ctx->max_proto_version);
3edabd3c
CH		 2992 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2993 return ctx->max_proto_version;
0f113f3e 2994 default:
26a7d938 2995 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2996 }
2997}
2998
2999long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3000{
3001 switch (cmd) {
3002 case SSL_CTRL_SET_MSG_CALLBACK:
3003 ctx->msg_callback = (void (*)
3004 (int write_p, int version, int content_type,
3005 const void *buf, size_t len, SSL *ssl,
3006 void *arg))(fp);
3007 return 1;
3008
3009 default:
26a7d938 3010 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 3011 }
3012}
d3442bc7 3013
ccd86b68 3014int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 3015{
90d9e49a
DSH		 3016 if (a->id > b->id)
3017 return 1;
3018 if (a->id < b->id)
3019 return -1;
3020 return 0;
0f113f3e
MC		 3021}
3022
3023int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3024 const SSL_CIPHER *const *bp)
3025{
90d9e49a
DSH		 3026 if ((*ap)->id > (*bp)->id)
3027 return 1;
3028 if ((*ap)->id < (*bp)->id)
3029 return -1;
3030 return 0;
0f113f3e 3031}
d02b48c6 3032
38b051a1
TM		 3033/*
3034 * return a STACK of the ciphers available for the SSL and in order of
3035 * preference
3036 */
0821bcd4 3037STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e 3038{
38b051a1
TM		 3039 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3040
3041 if (sc != NULL) {
3042 if (sc->cipher_list != NULL) {
3043 return sc->cipher_list;
0f113f3e 3044 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 3045 return s->ctx->cipher_list;
0f113f3e
MC		 3046 }
3047 }
26a7d938 3048 return NULL;
0f113f3e
MC		 3049}
3050
831eef2c
NM		 3051STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3052{
38b051a1
TM		 3053 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3054
3055 if (sc == NULL || !sc->server)
831eef2c 3056 return NULL;
38b051a1 3057 return sc->peer_ciphers;
831eef2c
NM		 3058}
3059
8b8e5bed 3060STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 3061{
3062 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3063 int i;
38b051a1
TM		 3064 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3065
3066 if (sc == NULL)
3067 return NULL;
1d0c08b4 3068
0f113f3e
MC		 3069 ciphers = SSL_get_ciphers(s);
3070 if (!ciphers)
3071 return NULL;
38b051a1 3072 if (!ssl_set_client_disabled(sc))
1d0c08b4 3073 return NULL;
0f113f3e
MC		 3074 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3075 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
38b051a1 3076 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 3077 if (!sk)
3078 sk = sk_SSL_CIPHER_new_null();
3079 if (!sk)
3080 return NULL;
3081 if (!sk_SSL_CIPHER_push(sk, c)) {
3082 sk_SSL_CIPHER_free(sk);
3083 return NULL;
3084 }
3085 }
3086 }
3087 return sk;
3088}
8b8e5bed 3089
4f43d0e7 3090/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 3091 * algorithm id */
38b051a1 3092STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
0f113f3e
MC		 3093{
3094 if (s != NULL) {
38b051a1 3095 if (s->cipher_list_by_id != NULL)
26a7d938 3096 return s->cipher_list_by_id;
38b051a1
TM		 3097 else if (s->ssl.ctx != NULL
3098 && s->ssl.ctx->cipher_list_by_id != NULL)
3099 return s->ssl.ctx->cipher_list_by_id;
0f113f3e 3100 }
26a7d938 3101 return NULL;
0f113f3e 3102}
d02b48c6 3103
4f43d0e7 3104/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 3105const char *SSL_get_cipher_list(const SSL *s, int n)
3106{
4a640fb6 3107 const SSL_CIPHER *c;
0f113f3e
MC		 3108 STACK_OF(SSL_CIPHER) *sk;
3109
3110 if (s == NULL)
26a7d938 3111 return NULL;
0f113f3e
MC		 3112 sk = SSL_get_ciphers(s);
3113 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 3114 return NULL;
0f113f3e
MC		 3115 c = sk_SSL_CIPHER_value(sk, n);
3116 if (c == NULL)
26a7d938
K		 3117 return NULL;
3118 return c->name;
0f113f3e 3119}
d02b48c6 3120
9d5ac953
KY		 3121/** return a STACK of the ciphers available for the SSL_CTX and in order of
3122 * preference */
3123STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3124{
3125 if (ctx != NULL)
3126 return ctx->cipher_list;
3127 return NULL;
3128}
3129
3c83c5ba
SR		 3130/*
3131 * Distinguish between ciphers controlled by set_ciphersuite() and
3132 * set_cipher_list() when counting.
3133 */
3134static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3135{
3136 int i, num = 0;
3137 const SSL_CIPHER *c;
3138
3139 if (sk == NULL)
3140 return 0;
3141 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3142 c = sk_SSL_CIPHER_value(sk, i);
3143 if (c->min_tls >= TLS1_3_VERSION)
3144 continue;
3145 num++;
3146 }
3147 return num;
3148}
3149
25f923dd 3150/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 3151int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 3152{
3153 STACK_OF(SSL_CIPHER) *sk;
3154
a68eee67 3155 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
f865b081
MC		 3156 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3157 ctx->cert);
0f113f3e
MC		 3158 /*
3159 * ssl_create_cipher_list may return an empty stack if it was unable to
3160 * find a cipher matching the given rule string (for example if the rule
3161 * string specifies a cipher which has been disabled). This is not an
3162 * error as far as ssl_create_cipher_list is concerned, and hence
3163 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3164 */
3165 if (sk == NULL)
3166 return 0;
3c83c5ba 3167 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 3168 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 3169 return 0;
3170 }
3171 return 1;
3172}
d02b48c6 3173
4f43d0e7 3174/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 3175int SSL_set_cipher_list(SSL *s, const char *str)
3176{
3177 STACK_OF(SSL_CIPHER) *sk;
38b051a1 3178 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
0f113f3e 3179
38b051a1
TM		 3180 if (sc == NULL)
3181 return 0;
3182
3183 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3184 &sc->cipher_list, &sc->cipher_list_by_id, str,
3185 sc->cert);
0f113f3e
MC		 3186 /* see comment in SSL_CTX_set_cipher_list */
3187 if (sk == NULL)
3188 return 0;
3c83c5ba 3189 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 3190 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 3191 return 0;
3192 }
3193 return 1;
3194}
d02b48c6 3195
a216df59 3196char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 3197{
3198 char *p;
a216df59 3199 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 3200 const SSL_CIPHER *c;
0f113f3e 3201 int i;
38b051a1
TM		 3202 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3203
3204 if (sc == NULL)
3205 return NULL;
0f113f3e 3206
38b051a1
TM		 3207 if (!sc->server
3208 || sc->peer_ciphers == NULL
a216df59 3209 || size < 2)
26a7d938 3210 return NULL;
0f113f3e
MC		 3211
3212 p = buf;
38b051a1 3213 clntsk = sc->peer_ciphers;
a216df59
MC		 3214 srvrsk = SSL_get_ciphers(s);
3215 if (clntsk == NULL || srvrsk == NULL)
3216 return NULL;
0f113f3e 3217
a216df59 3218 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 3219 return NULL;
3220
a216df59 3221 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 3222 int n;
3223
a216df59
MC		 3224 c = sk_SSL_CIPHER_value(clntsk, i);
3225 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3226 continue;
3227
0f113f3e 3228 n = strlen(c->name);
a216df59 3229 if (n + 1 > size) {
0f113f3e
MC		 3230 if (p != buf)
3231 --p;
3232 *p = '\0';
3233 return buf;
3234 }
4cacc9d5 3235 strcpy(p, c->name);
0f113f3e
MC		 3236 p += n;
3237 *(p++) = ':';
a216df59 3238 size -= n + 1;
0f113f3e
MC		 3239 }
3240 p[-1] = '\0';
26a7d938 3241 return buf;
0f113f3e
MC		 3242}
3243
7955c1f1
MC		 3244/**
3245 * Return the requested servername (SNI) value. Note that the behaviour varies
3246 * depending on:
3247 * - whether this is called by the client or the server,
3248 * - if we are before or during/after the handshake,
3249 * - if a resumption or normal handshake is being attempted/has occurred
3250 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
38b051a1 3251 *
7955c1f1 3252 * Note that only the host_name type is defined (RFC 3546).
ed3883d2 3253 */
f1fd4544 3254const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e 3255{
38b051a1
TM		 3256 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3257 int server;
3258
3259 if (sc == NULL)
3260 return NULL;
3261
7955c1f1
MC		 3262 /*
3263 * If we don't know if we are the client or the server yet then we assume
3264 * client.
3265 */
38b051a1
TM		 3266 server = sc->handshake_func == NULL ? 0 : sc->server;
3267
0f113f3e
MC		 3268 if (type != TLSEXT_NAMETYPE_host_name)
3269 return NULL;
a13c20f6 3270
7955c1f1
MC		 3271 if (server) {
3272 /**
3273 * Server side
3274 * In TLSv1.3 on the server SNI is not associated with the session
3275 * but in TLSv1.2 or below it is.
3276 *
3277 * Before the handshake:
3278 * - return NULL
3279 *
3280 * During/after the handshake (TLSv1.2 or below resumption occurred):
3281 * - If a servername was accepted by the server in the original
3282 * handshake then it will return that servername, or NULL otherwise.
3283 *
3284 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3285 * - The function will return the servername requested by the client in
3286 * this handshake or NULL if none was requested.
3287 */
38b051a1
TM		 3288 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3289 return sc->session->ext.hostname;
7955c1f1
MC		 3290 } else {
3291 /**
3292 * Client side
3293 *
3294 * Before the handshake:
3295 * - If a servername has been set via a call to
3296 * SSL_set_tlsext_host_name() then it will return that servername
3297 * - If one has not been set, but a TLSv1.2 resumption is being
3298 * attempted and the session from the original handshake had a
3299 * servername accepted by the server then it will return that
3300 * servername
3301 * - Otherwise it returns NULL
3302 *
3303 * During/after the handshake (TLSv1.2 or below resumption occurred):
9f7505ab 3304 * - If the session from the original handshake had a servername accepted
7955c1f1
MC		 3305 * by the server then it will return that servername.
3306 * - Otherwise it returns the servername set via
3307 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3308 *
3309 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3310 * - It will return the servername set via SSL_set_tlsext_host_name()
3311 * (or NULL if it was not called).
3312 */
3313 if (SSL_in_before(s)) {
38b051a1
TM		 3314 if (sc->ext.hostname == NULL
3315 && sc->session != NULL
3316 && sc->session->ssl_version != TLS1_3_VERSION)
3317 return sc->session->ext.hostname;
7955c1f1 3318 } else {
38b051a1
TM		 3319 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3320 && sc->session->ext.hostname != NULL)
3321 return sc->session->ext.hostname;
7955c1f1
MC		 3322 }
3323 }
3324
38b051a1 3325 return sc->ext.hostname;
0f113f3e 3326}
ed3883d2 3327
f1fd4544 3328int SSL_get_servername_type(const SSL *s)
0f113f3e 3329{
7955c1f1 3330 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
0f113f3e
MC		 3331 return TLSEXT_NAMETYPE_host_name;
3332 return -1;
3333}
ee2ffc27 3334
0f113f3e
MC		 3335/*
3336 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 3337 * expected that this function is called from the callback set by
0f113f3e
MC		 3338 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3339 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3340 * not included in the length. A byte string of length 0 is invalid. No byte
3341 * string may be truncated. The current, but experimental algorithm for
3342 * selecting the protocol is: 1) If the server doesn't support NPN then this
3343 * is indicated to the callback. In this case, the client application has to
3344 * abort the connection or have a default application level protocol. 2) If
3345 * the server supports NPN, but advertises an empty list then the client
f430ba31 3346 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 3347 * fallback case was enacted. 3) Otherwise, the client finds the first
3348 * protocol in the server's list that it supports and selects this protocol.
3349 * This is because it's assumed that the server has better information about
3350 * which protocol a client should use. 4) If the client doesn't support any
3351 * of the server's advertised protocols, then this is treated the same as
3352 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3353 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 3354 */
0f113f3e
MC		 3355int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3356 const unsigned char *server,
3357 unsigned int server_len,
a230b26e 3358 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 3359{
3360 unsigned int i, j;
3361 const unsigned char *result;
3362 int status = OPENSSL_NPN_UNSUPPORTED;
3363
3364 /*
3365 * For each protocol in server preference order, see if we support it.
3366 */
3367 for (i = 0; i < server_len;) {
3368 for (j = 0; j < client_len;) {
3369 if (server[i] == client[j] &&
3370 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3371 /* We found a match */
3372 result = &server[i];
3373 status = OPENSSL_NPN_NEGOTIATED;
3374 goto found;
3375 }
3376 j += client[j];
3377 j++;
3378 }
3379 i += server[i];
3380 i++;
3381 }
3382
3383 /* There's no overlap between our protocols and the server's list. */
3384 result = client;
3385 status = OPENSSL_NPN_NO_OVERLAP;
3386
3387 found:
3388 *out = (unsigned char *)result + 1;
3389 *outlen = result[0];
3390 return status;
3391}
ee2ffc27 3392
e481f9b9 3393#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 3394/*
3395 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3396 * client's requested protocol for this connection and returns 0. If the
3397 * client didn't request any protocol, then *data is set to NULL. Note that
3398 * the client can request any protocol it chooses. The value returned from
3399 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 3400 * provided by the callback.
3401 */
0f113f3e
MC		 3402void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3403 unsigned *len)
3404{
38b051a1
TM		 3405 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3406
3407 if (sc == NULL) {
3408 /* We have no other way to indicate error */
3409 *data = NULL;
3410 *len = 0;
3411 return;
3412 }
3413
3414 *data = sc->ext.npn;
12a765a5 3415 if (*data == NULL) {
0f113f3e
MC		 3416 *len = 0;
3417 } else {
38b051a1 3418 *len = (unsigned int)sc->ext.npn_len;
0f113f3e
MC		 3419 }
3420}
3421
3422/*
aff8c126 3423 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 3424 * a TLS server needs a list of supported protocols for Next Protocol
3425 * Negotiation. The returned list must be in wire format. The list is
3426 * returned by setting |out| to point to it and |outlen| to its length. This
3427 * memory will not be modified, but one should assume that the SSL* keeps a
3428 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3429 * wishes to advertise. Otherwise, no such extension will be included in the
3430 * ServerHello.
3431 */
aff8c126 3432void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 3433 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 3434 void *arg)
0f113f3e 3435{
aff8c126
RS		 3436 ctx->ext.npn_advertised_cb = cb;
3437 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 3438}
3439
3440/*
3441 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 3442 * client needs to select a protocol from the server's provided list. |out|
3443 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 3444 * The length of the protocol name must be written into |outlen|. The
3445 * server's advertised protocols are provided in |in| and |inlen|. The
3446 * callback can assume that |in| is syntactically valid. The client must
3447 * select a protocol. It is fatal to the connection if this callback returns
3448 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 3449 */
aff8c126 3450void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 3451 SSL_CTX_npn_select_cb_func cb,
aff8c126 3452 void *arg)
0f113f3e 3453{
aff8c126
RS		 3454 ctx->ext.npn_select_cb = cb;
3455 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 3456}
e481f9b9 3457#endif
a398f821 3458
feba11cf
TS		 3459static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3460{
3461 unsigned int idx;
3462
3463 if (protos_len < 2 || protos == NULL)
3464 return 0;
3465
3466 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3467 if (protos[idx] == 0)
3468 return 0;
3469 }
3470 return idx == protos_len;
3471}
0f113f3e
MC		 3472/*
3473 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 3474 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 3475 * length-prefixed strings). Returns 0 on success.
3476 */
3477int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 3478 unsigned int protos_len)
0f113f3e 3479{
feba11cf
TS		 3480 unsigned char *alpn;
3481
3482 if (protos_len == 0 || protos == NULL) {
3483 OPENSSL_free(ctx->ext.alpn);
3484 ctx->ext.alpn = NULL;
39a14059 3485 ctx->ext.alpn_len = 0;
feba11cf
TS		 3486 return 0;
3487 }
3488 /* Not valid per RFC */
3489 if (!alpn_value_ok(protos, protos_len))
3490 return 1;
3491
3492 alpn = OPENSSL_memdup(protos, protos_len);
e077455e 3493 if (alpn == NULL)
0f113f3e 3494 return 1;
feba11cf
TS		 3495 OPENSSL_free(ctx->ext.alpn);
3496 ctx->ext.alpn = alpn;
aff8c126 3497 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 3498
3499 return 0;
3500}
3501
3502/*
3503 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 3504 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 3505 * length-prefixed strings). Returns 0 on success.
3506 */
3507int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 3508 unsigned int protos_len)
0f113f3e 3509{
feba11cf 3510 unsigned char *alpn;
38b051a1
TM		 3511 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3512
3513 if (sc == NULL)
3514 return 1;
feba11cf
TS		 3515
3516 if (protos_len == 0 || protos == NULL) {
38b051a1
TM		 3517 OPENSSL_free(sc->ext.alpn);
3518 sc->ext.alpn = NULL;
3519 sc->ext.alpn_len = 0;
feba11cf
TS		 3520 return 0;
3521 }
3522 /* Not valid per RFC */
3523 if (!alpn_value_ok(protos, protos_len))
3524 return 1;
3525
3526 alpn = OPENSSL_memdup(protos, protos_len);
e077455e 3527 if (alpn == NULL)
0f113f3e 3528 return 1;
38b051a1
TM		 3529 OPENSSL_free(sc->ext.alpn);
3530 sc->ext.alpn = alpn;
3531 sc->ext.alpn_len = protos_len;
0f113f3e
MC		 3532
3533 return 0;
3534}
3535
3536/*
3537 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3538 * called during ClientHello processing in order to select an ALPN protocol
3539 * from the client's list of offered protocols.
3540 */
3541void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 3542 SSL_CTX_alpn_select_cb_func cb,
3543 void *arg)
0f113f3e 3544{
aff8c126
RS		 3545 ctx->ext.alpn_select_cb = cb;
3546 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 3547}
3548
3549/*
69687aa8
F		 3550 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3551 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 3552 * (not including the leading length-prefix byte). If the server didn't
3553 * respond with a negotiated protocol then |*len| will be zero.
3554 */
6f017a8f 3555void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 3556 unsigned int *len)
0f113f3e 3557{
38b051a1
TM		 3558 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3559
3560 if (sc == NULL) {
3561 /* We have no other way to indicate error */
3562 *data = NULL;
3563 *len = 0;
3564 return;
3565 }
3566
3567 *data = sc->s3.alpn_selected;
0f113f3e
MC		 3568 if (*data == NULL)
3569 *len = 0;
3570 else
38b051a1 3571 *len = (unsigned int)sc->s3.alpn_selected_len;
0f113f3e
MC		 3572}
3573
74b4b494 3574int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 3575 const char *label, size_t llen,
23cec1f4 3576 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 3577 int use_context)
3578{
38b051a1
TM		 3579 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3580
3581 if (sc == NULL)
3582 return -1;
3583
3584 if (sc->session == NULL
3585 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
0f113f3e 3586 return -1;
e0af0405 3587
38b051a1 3588 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
23cec1f4
MC		 3589 llen, context,
3590 contextlen, use_context);
0f113f3e 3591}
e0af0405 3592
b38ede80
TT		 3593int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3594 const char *label, size_t llen,
3595 const unsigned char *context,
3596 size_t contextlen)
3597{
38b051a1
TM		 3598 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3599
3600 if (sc == NULL)
3601 return -1;
3602
3603 if (sc->version != TLS1_3_VERSION)
b38ede80
TT		 3604 return 0;
3605
38b051a1 3606 return tls13_export_keying_material_early(sc, out, olen, label, llen,
b38ede80
TT		 3607 context, contextlen);
3608}
3609
3c1d6bbc 3610static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 3611{
bd5d27c1 3612 const unsigned char *session_id = a->session_id;
0f113f3e 3613 unsigned long l;
bd5d27c1
DB		 3614 unsigned char tmp_storage[4];
3615
3616 if (a->session_id_length < sizeof(tmp_storage)) {
3617 memset(tmp_storage, 0, sizeof(tmp_storage));
3618 memcpy(tmp_storage, a->session_id, a->session_id_length);
3619 session_id = tmp_storage;
3620 }
0f113f3e
MC		 3621
3622 l = (unsigned long)
bd5d27c1
DB		 3623 ((unsigned long)session_id[0]) |
3624 ((unsigned long)session_id[1] << 8L) |
3625 ((unsigned long)session_id[2] << 16L) |
3626 ((unsigned long)session_id[3] << 24L);
26a7d938 3627 return l;
0f113f3e
MC		 3628}
3629
3630/*
3631 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3632 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3633 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3634 * being able to construct an SSL_SESSION that will collide with any existing
3635 * session with a matching session ID.
3636 */
3637static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3638{
3639 if (a->ssl_version != b->ssl_version)
208fb891 3640 return 1;
0f113f3e 3641 if (a->session_id_length != b->session_id_length)
208fb891 3642 return 1;
26a7d938 3643 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3644}
3645
3646/*
3647 * These wrapper functions should remain rather than redeclaring
d0fa136c 3648 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3649 * variable. The reason is that the functions aren't static, they're exposed
3650 * via ssl.h.
3651 */
97b17195 3652
b4250010 3653SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
d8652be0 3654 const SSL_METHOD *meth)
0f113f3e
MC		 3655{
3656 SSL_CTX *ret = NULL;
b67cb09f
TS		 3657#ifndef OPENSSL_NO_COMP_ALG
3658 int i;
3659#endif
0f113f3e
MC		 3660
3661 if (meth == NULL) {
6849b73c 3662 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3663 return NULL;
0f113f3e
MC		 3664 }
3665
0fc32b07
MC		 3666 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3667 return NULL;
7fa792d1 3668
0f113f3e 3669 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
6849b73c 3670 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
0f113f3e
MC		 3671 goto err;
3672 }
b51bce94 3673 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3674 if (ret == NULL)
3675 goto err;
3676
045a8930
F		 3677 /* Init the reference counting before any call to SSL_CTX_free */
3678 ret->references = 1;
3679 ret->lock = CRYPTO_THREAD_lock_new();
3680 if (ret->lock == NULL) {
e077455e
RL		 3681 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3682 goto err;
045a8930
F		 3683 }
3684
acce0557
P		 3685#ifdef TSAN_REQUIRES_LOCKING
3686 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3687 if (ret->tsan_lock == NULL) {
e077455e 3688 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
acce0557
P		 3689 goto err;
3690 }
3691#endif
3692
ba18627e
MC		 3693 ret->libctx = libctx;
3694 if (propq != NULL) {
3695 ret->propq = OPENSSL_strdup(propq);
3696 if (ret->propq == NULL)
3697 goto err;
3698 }
3699
0f113f3e 3700 ret->method = meth;
7946ab33
KR		 3701 ret->min_proto_version = 0;
3702 ret->max_proto_version = 0;
693cf80c 3703 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3704 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3705 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3706 /* We take the system default. */
0f113f3e 3707 ret->session_timeout = meth->get_timeout();
0f113f3e 3708 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3709 ret->verify_mode = SSL_VERIFY_NONE;
e077455e
RL		 3710 if ((ret->cert = ssl_cert_new()) == NULL) {
3711 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
0f113f3e 3712 goto err;
e077455e 3713 }
0f113f3e 3714
62d0577e 3715 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
e077455e
RL		 3716 if (ret->sessions == NULL) {
3717 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
0f113f3e 3718 goto err;
e077455e 3719 }
0f113f3e 3720 ret->cert_store = X509_STORE_new();
e077455e
RL		 3721 if (ret->cert_store == NULL) {
3722 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
0f113f3e 3723 goto err;
e077455e 3724 }
ed29e82a 3725#ifndef OPENSSL_NO_CT
d8652be0 3726 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
e077455e
RL		 3727 if (ret->ctlog_store == NULL) {
3728 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
ed29e82a 3729 goto err;
e077455e 3730 }
ed29e82a 3731#endif
f865b081 3732
c8f6c28a
MC		 3733 /* initialize cipher/digest methods table */
3734 if (!ssl_load_ciphers(ret))
e077455e 3735 goto err;
263ff2c9
MC		 3736 /* initialise sig algs */
3737 if (!ssl_setup_sig_algs(ret))
e077455e 3738 goto err;
c8f6c28a 3739
9d2d857f 3740 if (!ssl_load_groups(ret))
e077455e 3741 goto err;
9d2d857f 3742
e077455e
RL		 3743 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3744 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
f865b081 3745 goto err;
e077455e 3746 }
f865b081 3747
a68eee67 3748 if (!ssl_create_cipher_list(ret,
f865b081 3749 ret->tls13_ciphersuites,
a230b26e 3750 &ret->cipher_list, &ret->cipher_list_by_id,
5d120511 3751 OSSL_default_cipher_list(), ret->cert)
a230b26e 3752 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
6849b73c 3753 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
e077455e 3754 goto err;
0f113f3e
MC		 3755 }
3756
3757 ret->param = X509_VERIFY_PARAM_new();
e077455e
RL		 3758 if (ret->param == NULL) {
3759 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
0f113f3e 3760 goto err;
e077455e 3761 }
0f113f3e 3762
c8f6c28a
MC		 3763 /*
3764 * If these aren't available from the provider we'll get NULL returns.
3765 * That's fine but will cause errors later if SSLv3 is negotiated
3766 */
3767 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3768 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
0f113f3e 3769
e077455e
RL		 3770 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3771 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
0f113f3e 3772 goto err;
e077455e 3773 }
0f113f3e 3774
e077455e
RL		 3775 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3776 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
98732979 3777 goto err;
e077455e 3778 }
98732979 3779
e077455e
RL		 3780 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3781 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
25a807bc 3782 goto err;
e077455e 3783 }
0f113f3e 3784
4bfb96f2
TS		 3785 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3786 goto err;
3787
0f113f3e
MC		 3788 /* No compression for DTLS */
3789 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3790 ret->comp_methods = SSL_COMP_get_compression_methods();
3791
3792 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3793 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3794
4e2e1ec9 3795 /* Setup RFC5077 ticket keys */
8f21260b 3796 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
0f8815aa 3797 sizeof(ret->ext.tick_key_name), 0) <= 0)
8f21260b 3798 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
0f8815aa 3799 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
8f21260b 3800 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
0f8815aa 3801 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
0f113f3e 3802 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3803
8f21260b 3804 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
e077455e
RL		 3805 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3806 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
43054d3d 3807 goto err;
e077455e 3808 }
43054d3d 3809
edc032b5 3810#ifndef OPENSSL_NO_SRP
e077455e
RL		 3811 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3812 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
69f68237 3813 goto err;
e077455e 3814 }
edc032b5 3815#endif
4db9677b 3816#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3817# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3818# define eng_strx(x) #x
3819# define eng_str(x) eng_strx(x)
3820 /* Use specific client engine automatically... ignore errors */
3821 {
3822 ENGINE *eng;
3823 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3824 if (!eng) {
3825 ERR_clear_error();
3826 ENGINE_load_builtin_engines();
3827 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3828 }
3829 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3830 ERR_clear_error();
3831 }
3832# endif
b67cb09f
TS		 3833#endif
3834
3835#ifndef OPENSSL_NO_COMP_ALG
3836 /*
3837 * Set the default order: brotli, zlib, zstd
3838 * Including only those enabled algorithms
3839 */
3840 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3841 i = 0;
3842 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3843 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3844 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3845 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3846 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3847 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
0f113f3e 3848#endif
dc5744cb
EK		 3849 /*
3850 * Disable compression by default to prevent CRIME. Applications can
3851 * re-enable compression by configuring
3852 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3853 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3854 * middlebox compatibility by default. This may be disabled by default in
3855 * a later OpenSSL version.
dc5744cb 3856 */
a5816a5a 3857 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3858
aff8c126 3859 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3860
bfa9a9af 3861 /*
c39e4048
BK		 3862 * We cannot usefully set a default max_early_data here (which gets
3863 * propagated in SSL_new(), for the following reason: setting the
3864 * SSL field causes tls_construct_stoc_early_data() to tell the
3865 * client that early data will be accepted when constructing a TLS 1.3
3866 * session ticket, and the client will accordingly send us early data
3867 * when using that ticket (if the client has early data to send).
3868 * However, in order for the early data to actually be consumed by
3869 * the application, the application must also have calls to
3870 * SSL_read_early_data(); otherwise we'll just skip past the early data
3871 * and ignore it. So, since the application must add calls to
3872 * SSL_read_early_data(), we also require them to add
3873 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3874 * eliminating the bandwidth-wasting early data in the case described
3875 * above.
bfa9a9af 3876 */
c39e4048 3877 ret->max_early_data = 0;
bfa9a9af 3878
4e8548e8
MC		 3879 /*
3880 * Default recv_max_early_data is a fully loaded single record. Could be
3881 * split across multiple records in practice. We set this differently to
3882 * max_early_data so that, in the default case, we do not advertise any
3883 * support for early_data, but if a client were to send us some (e.g.
3884 * because of an old, stale ticket) then we will tolerate it and skip over
3885 * it.
3886 */
3887 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3888
36ff232c
MC		 3889 /* By default we send two session tickets automatically in TLSv1.3 */
3890 ret->num_tickets = 2;
9d0a8bb7 3891
8a5ed9dc
TM		 3892 ssl_ctx_system_config(ret);
3893
16203f7b 3894 return ret;
0f113f3e 3895 err:
e0e920b1 3896 SSL_CTX_free(ret);
16203f7b 3897 return NULL;
0f113f3e 3898}
d02b48c6 3899
ba18627e
MC		 3900SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3901{
d8652be0 3902 return SSL_CTX_new_ex(NULL, NULL, meth);
ba18627e
MC		 3903}
3904
c5ebfcab 3905int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3906{
16203f7b 3907 int i;
c5ebfcab 3908
2f545ae4 3909 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3910 return 0;
3911
3912 REF_PRINT_COUNT("SSL_CTX", ctx);
3913 REF_ASSERT_ISNT(i < 2);
3914 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3915}
3916
4f43d0e7 3917void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3918{
3919 int i;
9d2d857f 3920 size_t j;
d02b48c6 3921
0f113f3e
MC		 3922 if (a == NULL)
3923 return;
d02b48c6 3924
2f545ae4 3925 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3926 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3927 if (i > 0)
3928 return;
f3f1cf84 3929 REF_ASSERT_ISNT(i < 0);
0f113f3e 3930
222561fe 3931 X509_VERIFY_PARAM_free(a->param);
919ba009 3932 dane_ctx_final(&a->dane);
0f113f3e
MC		 3933
3934 /*
3935 * Free internal session cache. However: the remove_cb() may reference
3936 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3937 * after the sessions were flushed.
3938 * As the ex_data handling routines might also touch the session cache,
3939 * the most secure solution seems to be: empty (flush) the cache, then
3940 * free ex_data, then finally free the cache.
3941 * (See ticket [openssl.org #212].)
3942 */
3943 if (a->sessions != NULL)
3944 SSL_CTX_flush_sessions(a, 0);
3945
3946 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3947 lh_SSL_SESSION_free(a->sessions);
222561fe 3948 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3949#ifndef OPENSSL_NO_CT
3950 CTLOG_STORE_free(a->ctlog_store);
3951#endif
25aaa98a
RS		 3952 sk_SSL_CIPHER_free(a->cipher_list);
3953 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3954 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3955 ssl_cert_free(a->cert);
fa7c2637 3956 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3957 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
79b2a2f2 3958 OSSL_STACK_OF_X509_free(a->extra_certs);
0f113f3e 3959 a->comp_methods = NULL;
e783bae2 3960#ifndef OPENSSL_NO_SRTP
25aaa98a 3961 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3962#endif
edc032b5 3963#ifndef OPENSSL_NO_SRP
76cb077f 3964 ssl_ctx_srp_ctx_free_intern(a);
edc032b5 3965#endif
bdfe932d 3966#ifndef OPENSSL_NO_ENGINE
301fcb28 3967 tls_engine_finish(a->client_cert_engine);
ddac1974 3968#endif
8671b898 3969
aff8c126 3970 OPENSSL_free(a->ext.ecpointformats);
187753e0 3971 OPENSSL_free(a->ext.supportedgroups);
ddf8f1ce 3972 OPENSSL_free(a->ext.supported_groups_default);
aff8c126 3973 OPENSSL_free(a->ext.alpn);
4bfb96f2 3974 OPENSSL_secure_free(a->ext.secure);
8671b898 3975
c8f6c28a
MC		 3976 ssl_evp_md_free(a->md5);
3977 ssl_evp_md_free(a->sha1);
3978
9d2d857f
MC		 3979 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3980 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3981 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3982 ssl_evp_md_free(a->ssl_digest_methods[j]);
3983 for (j = 0; j < a->group_list_len; j++) {
3984 OPENSSL_free(a->group_list[j].tlsname);
3985 OPENSSL_free(a->group_list[j].realname);
3986 OPENSSL_free(a->group_list[j].algorithm);
3987 }
3988 OPENSSL_free(a->group_list);
c8f6c28a 3989
263ff2c9
MC		 3990 OPENSSL_free(a->sigalg_lookup_cache);
3991
16203f7b 3992 CRYPTO_THREAD_lock_free(a->lock);
acce0557
P		 3993#ifdef TSAN_REQUIRES_LOCKING
3994 CRYPTO_THREAD_lock_free(a->tsan_lock);
3995#endif
16203f7b 3996
ba18627e
MC		 3997 OPENSSL_free(a->propq);
3998
0f113f3e
MC		 3999 OPENSSL_free(a);
4000}
d02b48c6 4001
3ae76679 4002void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 4003{
4004 ctx->default_passwd_callback = cb;
4005}
4006
4007void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4008{
4009 ctx->default_passwd_callback_userdata = u;
4010}
4011
0c452abc
CH		 4012pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4013{
4014 return ctx->default_passwd_callback;
4015}
4016
4017void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4018{
4019 return ctx->default_passwd_callback_userdata;
4020}
4021
a974e64a
MC		 4022void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4023{
38b051a1
TM		 4024 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4025
4026 if (sc == NULL)
4027 return;
4028
4029 sc->default_passwd_callback = cb;
a974e64a
MC		 4030}
4031
4032void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4033{
38b051a1
TM		 4034 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4035
4036 if (sc == NULL)
4037 return;
4038
4039 sc->default_passwd_callback_userdata = u;
a974e64a
MC		 4040}
4041
0c452abc
CH		 4042pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4043{
38b051a1
TM		 4044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4045
4046 if (sc == NULL)
4047 return NULL;
4048
4049 return sc->default_passwd_callback;
0c452abc
CH		 4050}
4051
4052void *SSL_get_default_passwd_cb_userdata(SSL *s)
4053{
38b051a1
TM		 4054 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4055
4056 if (sc == NULL)
4057 return NULL;
4058
4059 return sc->default_passwd_callback_userdata;
0c452abc
CH		 4060}
4061
0f113f3e
MC		 4062void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4063 int (*cb) (X509_STORE_CTX *, void *),
4064 void *arg)
4065{
4066 ctx->app_verify_callback = cb;
4067 ctx->app_verify_arg = arg;
4068}
4069
4070void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4071 int (*cb) (int, X509_STORE_CTX *))
4072{
4073 ctx->verify_mode = mode;
4074 ctx->default_verify_callback = cb;
4075}
4076
4077void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4078{
4079 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4080}
4081
a230b26e 4082void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 4083{
4084 ssl_cert_set_cert_cb(c->cert, cb, arg);
4085}
4086
4087void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4088{
38b051a1
TM		 4089 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4090
4091 if (sc == NULL)
4092 return;
4093
4094 ssl_cert_set_cert_cb(sc->cert, cb, arg);
0f113f3e 4095}
18d71588 4096
38b051a1 4097void ssl_set_masks(SSL_CONNECTION *s)
0f113f3e 4098{
6383d316 4099 CERT *c = s->cert;
555cbb32 4100 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 4101 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 4102 unsigned long mask_k, mask_a;
361a1191 4103 int have_ecc_cert, ecdsa_ok;
462f4f4b 4104
0f113f3e
MC		 4105 if (c == NULL)
4106 return;
d02b48c6 4107
13c45372 4108 dh_tmp = (c->dh_tmp != NULL
13c45372 4109 || c->dh_tmp_cb != NULL
13c45372 4110 || c->dh_tmp_auto);
d02b48c6 4111
d0ff28f8 4112 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 4113 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4114 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
6383d316 4115 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
0f113f3e
MC		 4116 mask_k = 0;
4117 mask_a = 0;
0e1dba93 4118
77359d22
RL		 4119 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4120 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 4121
2a9b9654 4122#ifndef OPENSSL_NO_GOST
4020c0b3 4123 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
5a5530a2 4124 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 4125 mask_a |= SSL_aGOST12;
4126 }
4020c0b3 4127 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
5a5530a2 4128 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 4129 mask_a |= SSL_aGOST12;
4130 }
4020c0b3 4131 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 4132 mask_k |= SSL_kGOST;
4133 mask_a |= SSL_aGOST01;
4134 }
2a9b9654 4135#endif
0f113f3e 4136
361a1191 4137 if (rsa_enc)
0f113f3e 4138 mask_k |= SSL_kRSA;
d02b48c6 4139
0f113f3e
MC		 4140 if (dh_tmp)
4141 mask_k |= SSL_kDHE;
d02b48c6 4142
6aaa29fb
DSH		 4143 /*
4144 * If we only have an RSA-PSS certificate allow RSA authentication
4145 * if TLS 1.2 and peer supports it.
4146 */
4147
4148 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4149 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
38b051a1 4150 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
0f113f3e 4151 mask_a |= SSL_aRSA;
d02b48c6 4152
0f113f3e
MC		 4153 if (dsa_sign) {
4154 mask_a |= SSL_aDSS;
0f113f3e 4155 }
d02b48c6 4156
0f113f3e 4157 mask_a |= SSL_aNULL;
d02b48c6 4158
0f113f3e
MC		 4159 /*
4160 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4161 * depending on the key usage extension.
4162 */
0f113f3e 4163 if (have_ecc_cert) {
a8d8e06b 4164 uint32_t ex_kusage;
4020c0b3 4165 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 4166 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 4167 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 4168 ecdsa_ok = 0;
c7c46256 4169 if (ecdsa_ok)
0f113f3e 4170 mask_a |= SSL_aECDSA;
0f113f3e 4171 }
b2021556
DSH		 4172 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4173 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4174 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
38b051a1 4175 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
b2021556 4176 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 4177
4178 /* Allow Ed448 for TLS 1.2 if peer supports it */
4179 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4180 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
38b051a1 4181 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
0e1d6ecf 4182 mask_a |= SSL_aECDSA;
ea262260 4183
fe6ef247 4184 mask_k |= SSL_kECDHE;
ddac1974
NL		 4185
4186#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 4187 mask_k |= SSL_kPSK;
4188 mask_a |= SSL_aPSK;
526f94ad
DSH		 4189 if (mask_k & SSL_kRSA)
4190 mask_k |= SSL_kRSAPSK;
4191 if (mask_k & SSL_kDHE)
4192 mask_k |= SSL_kDHEPSK;
4193 if (mask_k & SSL_kECDHE)
4194 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 4195#endif
4196
555cbb32
TS		 4197 s->s3.tmp.mask_k = mask_k;
4198 s->s3.tmp.mask_a = mask_a;
0f113f3e 4199}
d02b48c6 4200
38b051a1 4201int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
0f113f3e 4202{
555cbb32 4203 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 4204 /* key usage, if present, must allow signing */
ce0c1f2b 4205 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
6849b73c 4206 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
0f113f3e
MC		 4207 return 0;
4208 }
4209 }
0f113f3e
MC		 4210 return 1; /* all checks are ok */
4211}
ea262260 4212
38b051a1
TM		 4213int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4214 const unsigned char **serverinfo,
0f113f3e
MC		 4215 size_t *serverinfo_length)
4216{
555cbb32 4217 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 4218 *serverinfo_length = 0;
4219
a497cf25 4220 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 4221 return 0;
4222
a497cf25
DSH		 4223 *serverinfo = cpk->serverinfo;
4224 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 4225 return 1;
4226}
0f113f3e 4227
38b051a1 4228void ssl_update_cache(SSL_CONNECTION *s, int mode)
0f113f3e
MC		 4229{
4230 int i;
4231
4232 /*
4233 * If the session_id_length is 0, we are not supposed to cache it, and it
4234 * would be rather hard to do anyway :-)
4235 */
4236 if (s->session->session_id_length == 0)
4237 return;
4238
d316cdcf
BK		 4239 /*
4240 * If sid_ctx_length is 0 there is no specific application context
4241 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 4242 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4243 * indication that this is actually a session for the proper application
4244 * context, and the *handshake* will fail, not just the resumption attempt.
4245 * Do not cache (on the server) these sessions that are not resumable
4246 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 4247 */
c4fa1f7f 4248 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 4249 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4250 return;
4251
0f113f3e 4252 i = s->session_ctx->session_cache_mode;
5d61491c 4253 if ((i & mode) != 0
38b051a1 4254 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
ee94ec2e
MC		 4255 /*
4256 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 4257 * normally don't do this because by default it's a full stateless ticket
4258 * with only a dummy session id so there is no reason to cache it,
4259 * unless:
ee94ec2e
MC		 4260 * - we are doing early_data, in which case we cache so that we can
4261 * detect replays
4262 * - the application has set a remove_session_cb so needs to know about
4263 * session timeout events
6cc0b3c2 4264 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 4265 */
4266 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
38b051a1 4267 && (!SSL_CONNECTION_IS_TLS13(s)
ee94ec2e 4268 || !s->server
5d263fb7
MC		 4269 || (s->max_early_data > 0
4270 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 4271 || s->session_ctx->remove_session_cb != NULL
4272 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 4273 SSL_CTX_add_session(s->session_ctx, s->session);
4274
4275 /*
4276 * Add the session to the external cache. We do this even in server side
4277 * TLSv1.3 without early data because some applications just want to
4278 * know about the creation of a session and aren't doing a full cache.
4279 */
4280 if (s->session_ctx->new_session_cb != NULL) {
4281 SSL_SESSION_up_ref(s->session);
38b051a1
TM		 4282 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4283 s->session))
ee94ec2e
MC		 4284 SSL_SESSION_free(s->session);
4285 }
0f113f3e
MC		 4286 }
4287
4288 /* auto flush every 255 connections */
4289 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 4290 TSAN_QUALIFIER int *stat;
acce0557 4291
1fcb4e4d
BK		 4292 if (mode & SSL_SESS_CACHE_CLIENT)
4293 stat = &s->session_ctx->stats.sess_connect_good;
4294 else
4295 stat = &s->session_ctx->stats.sess_accept_good;
acce0557 4296 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
0f113f3e 4297 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 4298 }
4299}
d02b48c6 4300
3499327b 4301const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 4302{
4303 return ctx->method;
4304}
ba168244 4305
3499327b 4306const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 4307{
26a7d938 4308 return s->method;
0f113f3e 4309}
d02b48c6 4310
4ebb342f 4311int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 4312{
0f113f3e 4313 int ret = 1;
38b051a1
TM		 4314 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4315
4316 /* TODO(QUIC): Do we want this for QUIC? */
4317 if (sc == NULL
4318 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4319 return 0;
0f113f3e
MC		 4320
4321 if (s->method != meth) {
919ba009 4322 const SSL_METHOD *sm = s->method;
38b051a1 4323 int (*hf) (SSL *) = sc->handshake_func;
0f113f3e 4324
919ba009 4325 if (sm->version == meth->version)
0f113f3e
MC		 4326 s->method = meth;
4327 else {
38b051a1 4328 sm->ssl_deinit(s);
0f113f3e 4329 s->method = meth;
38b051a1 4330 ret = s->method->ssl_init(s);
0f113f3e
MC		 4331 }
4332
919ba009 4333 if (hf == sm->ssl_connect)
38b051a1 4334 sc->handshake_func = meth->ssl_connect;
919ba009 4335 else if (hf == sm->ssl_accept)
38b051a1 4336 sc->handshake_func = meth->ssl_accept;
0f113f3e 4337 }
26a7d938 4338 return ret;
0f113f3e
MC		 4339}
4340
4341int SSL_get_error(const SSL *s, int i)
4342{
4343 int reason;
4344 unsigned long l;
4345 BIO *bio;
38b051a1 4346 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
0f113f3e
MC		 4347
4348 if (i > 0)
26a7d938 4349 return SSL_ERROR_NONE;
0f113f3e 4350
38b051a1
TM		 4351 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4352 if (sc == NULL)
4353 return SSL_ERROR_SSL;
4354
0f113f3e
MC		 4355 /*
4356 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4357 * where we do encode the error
4358 */
4359 if ((l = ERR_peek_error()) != 0) {
4360 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 4361 return SSL_ERROR_SYSCALL;
0f113f3e 4362 else
26a7d938 4363 return SSL_ERROR_SSL;
0f113f3e
MC		 4364 }
4365
8051ab2b
MC		 4366 if (SSL_want_read(s)) {
4367 bio = SSL_get_rbio(s);
4368 if (BIO_should_read(bio))
26a7d938 4369 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 4370 else if (BIO_should_write(bio))
4371 /*
4372 * This one doesn't make too much sense ... We never try to write
4373 * to the rbio, and an application program where rbio and wbio
4374 * are separate couldn't even know what it should wait for.
4375 * However if we ever set s->rwstate incorrectly (so that we have
4376 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4377 * wbio *are* the same, this test works around that bug; so it
4378 * might be safer to keep it.
4379 */
26a7d938 4380 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 4381 else if (BIO_should_io_special(bio)) {
4382 reason = BIO_get_retry_reason(bio);
4383 if (reason == BIO_RR_CONNECT)
26a7d938 4384 return SSL_ERROR_WANT_CONNECT;
8051ab2b 4385 else if (reason == BIO_RR_ACCEPT)
26a7d938 4386 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 4387 else
26a7d938 4388 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 4389 }
8051ab2b 4390 }
0f113f3e 4391
8051ab2b 4392 if (SSL_want_write(s)) {
69687aa8 4393 /* Access wbio directly - in order to use the buffered bio if present */
38b051a1 4394 bio = sc->wbio;
8051ab2b 4395 if (BIO_should_write(bio))
26a7d938 4396 return SSL_ERROR_WANT_WRITE;
8051ab2b 4397 else if (BIO_should_read(bio))
2e7dc7cd 4398 /*
8051ab2b 4399 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 4400 */
26a7d938 4401 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 4402 else if (BIO_should_io_special(bio)) {
4403 reason = BIO_get_retry_reason(bio);
4404 if (reason == BIO_RR_CONNECT)
26a7d938 4405 return SSL_ERROR_WANT_CONNECT;
8051ab2b 4406 else if (reason == BIO_RR_ACCEPT)
26a7d938 4407 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 4408 else
26a7d938 4409 return SSL_ERROR_SYSCALL;
0f113f3e 4410 }
07bbc92c 4411 }
6b1bb98f 4412 if (SSL_want_x509_lookup(s))
26a7d938 4413 return SSL_ERROR_WANT_X509_LOOKUP;
0c3eb279
DDO		 4414 if (SSL_want_retry_verify(s))
4415 return SSL_ERROR_WANT_RETRY_VERIFY;
6b1bb98f 4416 if (SSL_want_async(s))
8051ab2b 4417 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 4418 if (SSL_want_async_job(s))
8051ab2b 4419 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 4420 if (SSL_want_client_hello_cb(s))
4421 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b 4422
38b051a1
TM		 4423 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4424 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 4425 return SSL_ERROR_ZERO_RETURN;
8051ab2b 4426
26a7d938 4427 return SSL_ERROR_SYSCALL;
0f113f3e 4428}
d02b48c6 4429
add2f5ca
MC		 4430static int ssl_do_handshake_intern(void *vargs)
4431{
38b051a1
TM		 4432 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4433 SSL *s = args->s;
4434 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
add2f5ca 4435
38b051a1
TM		 4436 if (sc == NULL)
4437 return -1;
add2f5ca 4438
38b051a1 4439 return sc->handshake_func(s);
add2f5ca
MC		 4440}
4441
4f43d0e7 4442int SSL_do_handshake(SSL *s)
0f113f3e
MC		 4443{
4444 int ret = 1;
38b051a1
TM		 4445 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4446
4447 /* TODO(QUIC): Special handling for QUIC will be needed */
4448 if (sc == NULL)
4449 return -1;
0f113f3e 4450
38b051a1 4451 if (sc->handshake_func == NULL) {
6849b73c 4452 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 4453 return -1;
0f113f3e
MC		 4454 }
4455
38b051a1 4456 ossl_statem_check_finish_init(sc, -1);
49e7fe12 4457
c7f47786 4458 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 4459
4460 if (SSL_in_init(s) || SSL_in_before(s)) {
38b051a1 4461 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 4462 struct ssl_async_args args;
4463
09134f18 4464 memset(&args, 0, sizeof(args));
add2f5ca
MC		 4465 args.s = s;
4466
7fecbf6f 4467 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca 4468 } else {
38b051a1 4469 ret = sc->handshake_func(s);
add2f5ca 4470 }
0f113f3e 4471 }
add2f5ca 4472 return ret;
0f113f3e
MC		 4473}
4474
4f43d0e7 4475void SSL_set_accept_state(SSL *s)
0f113f3e 4476{
38b051a1
TM		 4477 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4478
4479 /* TODO(QUIC): Special handling for QUIC will be needed */
4480 if (sc == NULL)
4481 return;
4482
4483 sc->server = 1;
4484 sc->shutdown = 0;
4485 ossl_statem_clear(sc);
4486 sc->handshake_func = s->method->ssl_accept;
6d814fd6
MC		 4487 /* Ignore return value. Its a void public API function */
4488 clear_record_layer(sc);
0f113f3e 4489}
d02b48c6 4490
4f43d0e7 4491void SSL_set_connect_state(SSL *s)
0f113f3e 4492{
38b051a1
TM		 4493 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4494
4495 /* TODO(QUIC): Special handling for QUIC will be needed */
4496 if (sc == NULL)
4497 return;
4498
4499 sc->server = 0;
4500 sc->shutdown = 0;
4501 ossl_statem_clear(sc);
4502 sc->handshake_func = s->method->ssl_connect;
6d814fd6
MC		 4503 /* Ignore return value. Its a void public API function */
4504 clear_record_layer(sc);
0f113f3e 4505}
d02b48c6 4506
4f43d0e7 4507int ssl_undefined_function(SSL *s)
0f113f3e 4508{
6849b73c 4509 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 4510 return 0;
0f113f3e 4511}
d02b48c6 4512
41a15c4f 4513int ssl_undefined_void_function(void)
0f113f3e 4514{
6849b73c 4515 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 4516 return 0;
0f113f3e 4517}
41a15c4f 4518
0821bcd4 4519int ssl_undefined_const_function(const SSL *s)
0f113f3e 4520{
26a7d938 4521 return 0;
0f113f3e 4522}
0821bcd4 4523
2b8fa1d5 4524const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e 4525{
6849b73c 4526 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 4527 return NULL;
0f113f3e 4528}
d02b48c6 4529
3eb2aff4 4530const char *ssl_protocol_to_string(int version)
7d650072 4531{
1287dabd 4532 switch (version)
2abacef1
MC		 4533 {
4534 case TLS1_3_VERSION:
582a17d6 4535 return "TLSv1.3";
2abacef1
MC		 4536
4537 case TLS1_2_VERSION:
7d650072 4538 return "TLSv1.2";
2abacef1
MC		 4539
4540 case TLS1_1_VERSION:
7d650072 4541 return "TLSv1.1";
2abacef1
MC		 4542
4543 case TLS1_VERSION:
ee3a6c64 4544 return "TLSv1";
2abacef1
MC		 4545
4546 case SSL3_VERSION:
7d650072 4547 return "SSLv3";
2abacef1
MC		 4548
4549 case DTLS1_BAD_VER:
7d650072 4550 return "DTLSv0.9";
2abacef1
MC		 4551
4552 case DTLS1_VERSION:
7d650072 4553 return "DTLSv1";
2abacef1
MC		 4554
4555 case DTLS1_2_VERSION:
7d650072 4556 return "DTLSv1.2";
2abacef1
MC		 4557
4558 default:
4559 return "unknown";
4560 }
0f113f3e 4561}
d02b48c6 4562
7d650072
KR		 4563const char *SSL_get_version(const SSL *s)
4564{
38b051a1
TM		 4565 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4566
4567 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4568 if (sc == NULL)
4569 return NULL;
4570
4571 return ssl_protocol_to_string(sc->version);
7d650072
KR		 4572}
4573
98732979 4574static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 4575{
4576 STACK_OF(X509_NAME) *sk;
4577 X509_NAME *xn;
98732979
MC		 4578 int i;
4579
4580 if (src == NULL) {
4581 *dst = NULL;
4582 return 1;
4583 }
4584
4585 if ((sk = sk_X509_NAME_new_null()) == NULL)
4586 return 0;
4587 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4588 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4589 if (xn == NULL) {
4590 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4591 return 0;
4592 }
4593 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4594 X509_NAME_free(xn);
4595 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4596 return 0;
4597 }
4598 }
4599 *dst = sk;
4600
4601 return 1;
4602}
4603
4604SSL *SSL_dup(SSL *s)
4605{
0f113f3e
MC		 4606 SSL *ret;
4607 int i;
38b051a1
TM		 4608 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4609 SSL_CONNECTION *retsc;
4610 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4611
4612 if (sc == NULL)
4613 return NULL;
0f113f3e 4614
919ba009
VD		 4615 /* If we're not quiescent, just up_ref! */
4616 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 4617 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 4618 return s;
4619 }
4620
4621 /*
4622 * Otherwise, copy configuration state, and session if set.
4623 */
0f113f3e 4624 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 4625 return NULL;
38b051a1
TM		 4626 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4627 goto err;
0f113f3e 4628
38b051a1 4629 if (sc->session != NULL) {
919ba009
VD		 4630 /*
4631 * Arranges to share the same session via up_ref. This "copies"
4632 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4633 */
61986d32 4634 if (!SSL_copy_session_id(ret, s))
17dd65e6 4635 goto err;
0f113f3e
MC		 4636 } else {
4637 /*
4638 * No session has been established yet, so we have to expect that
4639 * s->cert or ret->cert will be changed later -- they should not both
4640 * point to the same object, and thus we can't use
4641 * SSL_copy_session_id.
4642 */
919ba009
VD		 4643 if (!SSL_set_ssl_method(ret, s->method))
4644 goto err;
0f113f3e 4645
38b051a1
TM		 4646 if (sc->cert != NULL) {
4647 ssl_cert_free(retsc->cert);
4648 retsc->cert = ssl_cert_dup(sc->cert);
4649 if (retsc->cert == NULL)
0f113f3e
MC		 4650 goto err;
4651 }
4652
38b051a1
TM		 4653 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4654 (int)sc->sid_ctx_length))
69f68237 4655 goto err;
0f113f3e
MC		 4656 }
4657
38b051a1 4658 if (!ssl_dane_dup(retsc, sc))
9f6b22b8 4659 goto err;
38b051a1
TM		 4660 retsc->version = sc->version;
4661 retsc->options = sc->options;
4662 retsc->min_proto_version = sc->min_proto_version;
4663 retsc->max_proto_version = sc->max_proto_version;
4664 retsc->mode = sc->mode;
0f113f3e
MC		 4665 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4666 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
38b051a1
TM		 4667 retsc->msg_callback = sc->msg_callback;
4668 retsc->msg_callback_arg = sc->msg_callback_arg;
0f113f3e
MC		 4669 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4670 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
38b051a1 4671 retsc->generate_session_id = sc->generate_session_id;
0f113f3e
MC		 4672
4673 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4674
0f113f3e
MC		 4675 /* copy app data, a little dangerous perhaps */
4676 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4677 goto err;
4678
38b051a1
TM		 4679 retsc->server = sc->server;
4680 if (sc->handshake_func) {
4681 if (sc->server)
919ba009
VD		 4682 SSL_set_accept_state(ret);
4683 else
4684 SSL_set_connect_state(ret);
4685 }
38b051a1
TM		 4686 retsc->shutdown = sc->shutdown;
4687 retsc->hit = sc->hit;
0f113f3e 4688
38b051a1
TM		 4689 retsc->default_passwd_callback = sc->default_passwd_callback;
4690 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
a974e64a 4691
38b051a1 4692 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
0f113f3e
MC		 4693
4694 /* dup the cipher_list and cipher_list_by_id stacks */
38b051a1
TM		 4695 if (sc->cipher_list != NULL) {
4696 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
0f113f3e
MC		 4697 goto err;
4698 }
38b051a1
TM		 4699 if (sc->cipher_list_by_id != NULL)
4700 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
0f113f3e
MC		 4701 == NULL)
4702 goto err;
4703
4704 /* Dup the client_CA list */
38b051a1
TM		 4705 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4706 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
98732979
MC		 4707 goto err;
4708
66696478 4709 return ret;
0f113f3e 4710
0f113f3e 4711 err:
66696478
RS		 4712 SSL_free(ret);
4713 return NULL;
0f113f3e 4714}
d02b48c6 4715
0821bcd4 4716X509 *SSL_get_certificate(const SSL *s)
0f113f3e 4717{
38b051a1
TM		 4718 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4719
4720 if (sc == NULL)
4721 return NULL;
4722
4723 if (sc->cert != NULL)
4724 return sc->cert->key->x509;
0f113f3e 4725 else
26a7d938 4726 return NULL;
0f113f3e 4727}
d02b48c6 4728
a25f9adc 4729EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e 4730{
38b051a1
TM		 4731 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4732
4733 if (sc == NULL)
4734 return NULL;
4735
4736 if (sc->cert != NULL)
4737 return sc->cert->key->privatekey;
0f113f3e 4738 else
26a7d938 4739 return NULL;
0f113f3e 4740}
d02b48c6 4741
a25f9adc 4742X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 4743{
4744 if (ctx->cert != NULL)
4745 return ctx->cert->key->x509;
4746 else
4747 return NULL;
4748}
a25f9adc
DSH		 4749
4750EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4751{
4752 if (ctx->cert != NULL)
4753 return ctx->cert->key->privatekey;
4754 else
4755 return NULL;
4756}
a25f9adc 4757
babb3798 4758const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e 4759{
38b051a1
TM		 4760 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4761
4762 if (sc == NULL)
4763 return NULL;
4764
4765 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4766 return sc->session->cipher;
26a7d938 4767 return NULL;
0f113f3e
MC		 4768}
4769
0aed6e44
BK		 4770const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4771{
38b051a1
TM		 4772 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4773
4774 if (sc == NULL)
4775 return NULL;
4776
4777 return sc->s3.tmp.new_cipher;
0aed6e44
BK		 4778}
4779
3499327b 4780const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4781{
9a555706 4782#ifndef OPENSSL_NO_COMP
38b051a1
TM		 4783 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4784
4785 if (sc == NULL)
4786 return NULL;
4787
1e76110b 4788 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
9a555706
RS		 4789#else
4790 return NULL;
4791#endif
0f113f3e 4792}
377dcdba 4793
3499327b 4794const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4795{
9a555706 4796#ifndef OPENSSL_NO_COMP
38b051a1
TM		 4797 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4798
4799 if (sc == NULL)
4800 return NULL;
4801
1e76110b 4802 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
9a555706
RS		 4803#else
4804 return NULL;
0f113f3e 4805#endif
9a555706 4806}
0f113f3e 4807
38b051a1 4808int ssl_init_wbio_buffer(SSL_CONNECTION *s)
0f113f3e
MC		 4809{
4810 BIO *bbio;
4811
2e7dc7cd
MC		 4812 if (s->bbio != NULL) {
4813 /* Already buffered. */
4814 return 1;
0f113f3e 4815 }
46417569 4816
2e7dc7cd
MC		 4817 bbio = BIO_new(BIO_f_buffer());
4818 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4819 BIO_free(bbio);
6849b73c 4820 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
46417569 4821 return 0;
0f113f3e 4822 }
2e7dc7cd
MC		 4823 s->bbio = bbio;
4824 s->wbio = BIO_push(bbio, s->wbio);
46417569 4825
b5cf81f7
MC		 4826 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4827
46417569 4828 return 1;
0f113f3e 4829}
413c4f45 4830
38b051a1 4831int ssl_free_wbio_buffer(SSL_CONNECTION *s)
0f113f3e 4832{
62adbcee 4833 /* callers ensure s is never null */
0f113f3e 4834 if (s->bbio == NULL)
b77f3ed1 4835 return 1;
0f113f3e 4836
2e7dc7cd 4837 s->wbio = BIO_pop(s->wbio);
b5cf81f7
MC		 4838 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4839
0f113f3e
MC		 4840 BIO_free(s->bbio);
4841 s->bbio = NULL;
b77f3ed1
MC		 4842
4843 return 1;
0f113f3e
MC		 4844}
4845
4846void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4847{
4848 ctx->quiet_shutdown = mode;
4849}
58964a49 4850
0821bcd4 4851int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4852{
26a7d938 4853 return ctx->quiet_shutdown;
0f113f3e 4854}
58964a49 4855
0f113f3e
MC		 4856void SSL_set_quiet_shutdown(SSL *s, int mode)
4857{
38b051a1
TM		 4858 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4859
4860 /* TODO(QUIC): Do we want this for QUIC? */
4861 if (sc == NULL)
4862 return;
4863
4864 sc->quiet_shutdown = mode;
0f113f3e 4865}
58964a49 4866
0821bcd4 4867int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4868{
38b051a1
TM		 4869 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4870
4871 /* TODO(QUIC): Do we want this for QUIC? */
4872 if (sc == NULL)
4873 return 0;
4874
4875 return sc->quiet_shutdown;
0f113f3e 4876}
58964a49 4877
0f113f3e
MC		 4878void SSL_set_shutdown(SSL *s, int mode)
4879{
38b051a1
TM		 4880 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4881
4882 /* TODO(QUIC): Do we want this for QUIC? */
4883 if (sc == NULL)
4884 return;
4885
4886 sc->shutdown = mode;
0f113f3e 4887}
58964a49 4888
0821bcd4 4889int SSL_get_shutdown(const SSL *s)
0f113f3e 4890{
38b051a1
TM		 4891 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4892
4893 /* TODO(QUIC): Do we want this for QUIC? */
4894 if (sc == NULL)
4895 return 0;
4896
4897 return sc->shutdown;
0f113f3e 4898}
58964a49 4899
0821bcd4 4900int SSL_version(const SSL *s)
0f113f3e 4901{
38b051a1
TM		 4902 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4903
4904 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4905 if (sc == NULL)
4906 return 0;
4907
4908 return sc->version;
6546e9b2
AG		 4909}
4910
4911int SSL_client_version(const SSL *s)
4912{
38b051a1
TM		 4913 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4914
4915 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4916 if (sc == NULL)
4917 return 0;
4918
4919 return sc->client_version;
0f113f3e 4920}
58964a49 4921
0821bcd4 4922SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4923{
6546e9b2 4924 return ssl->ctx;
0f113f3e
MC		 4925}
4926
4927SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4928{
24a0d393 4929 CERT *new_cert;
38b051a1
TM		 4930 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4931
4932 /* TODO(QUIC): Do we need this for QUIC support? */
4933 if (sc == NULL)
4934 return NULL;
4935
0f113f3e
MC		 4936 if (ssl->ctx == ctx)
4937 return ssl->ctx;
0f113f3e 4938 if (ctx == NULL)
38b051a1 4939 ctx = sc->session_ctx;
24a0d393
KR		 4940 new_cert = ssl_cert_dup(ctx->cert);
4941 if (new_cert == NULL) {
4942 return NULL;
0f113f3e 4943 }
21181889 4944
38b051a1 4945 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
21181889
MC		 4946 ssl_cert_free(new_cert);
4947 return NULL;
4948 }
4949
38b051a1
TM		 4950 ssl_cert_free(sc->cert);
4951 sc->cert = new_cert;
0f113f3e
MC		 4952
4953 /*
4954 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4955 * so setter APIs must prevent invalid lengths from entering the system.
4956 */
38b051a1 4957 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
380a522f 4958 return NULL;
0f113f3e
MC		 4959
4960 /*
4961 * If the session ID context matches that of the parent SSL_CTX,
4962 * inherit it from the new SSL_CTX as well. If however the context does
4963 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4964 * leave it unchanged.
4965 */
4966 if ((ssl->ctx != NULL) &&
38b051a1
TM		 4967 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4968 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4969 sc->sid_ctx_length = ctx->sid_ctx_length;
4970 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
0f113f3e
MC		 4971 }
4972
16203f7b 4973 SSL_CTX_up_ref(ctx);
a230b26e 4974 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4975 ssl->ctx = ctx;
4976
16203f7b 4977 return ssl->ctx;
0f113f3e 4978}
ed3883d2 4979
4f43d0e7 4980int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4981{
d8652be0
MC		 4982 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4983 ctx->propq);
0f113f3e 4984}
58964a49 4985
d84a7b20
MC		 4986int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4987{
4988 X509_LOOKUP *lookup;
4989
4990 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4991 if (lookup == NULL)
4992 return 0;
6dcb100f
RL		 4993
4994 /* We ignore errors, in case the directory doesn't exist */
4995 ERR_set_mark();
4996
d84a7b20
MC		 4997 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4998
6dcb100f 4999 ERR_pop_to_mark();
d84a7b20
MC		 5000
5001 return 1;
5002}
5003
5004int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5005{
5006 X509_LOOKUP *lookup;
5007
5008 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5009 if (lookup == NULL)
5010 return 0;
5011
492bc359 5012 /* We ignore errors, in case the file doesn't exist */
6dcb100f
RL		 5013 ERR_set_mark();
5014
d8652be0
MC		 5015 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5016 ctx->propq);
d84a7b20 5017
6dcb100f
RL		 5018 ERR_pop_to_mark();
5019
5020 return 1;
5021}
5022
5023int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5024{
5025 X509_LOOKUP *lookup;
5026
5027 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5028 if (lookup == NULL)
5029 return 0;
5030
5031 /* We ignore errors, in case the directory doesn't exist */
5032 ERR_set_mark();
5033
d8652be0 5034 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
6dcb100f
RL		 5035
5036 ERR_pop_to_mark();
d84a7b20
MC		 5037
5038 return 1;
5039}
5040
6dcb100f
RL		 5041int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5042{
d8652be0
MC		 5043 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5044 ctx->propq);
6dcb100f
RL		 5045}
5046
5047int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5048{
5049 return X509_STORE_load_path(ctx->cert_store, CApath);
5050}
5051
5052int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5053{
d8652be0
MC		 5054 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5055 ctx->propq);
6dcb100f
RL		 5056}
5057
303c0028 5058int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 5059 const char *CApath)
5060{
6dcb100f
RL		 5061 if (CAfile == NULL && CApath == NULL)
5062 return 0;
5063 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5064 return 0;
5065 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5066 return 0;
5067 return 1;
0f113f3e 5068}
58964a49 5069
45d87a1f 5070void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 5071 void (*cb) (const SSL *ssl, int type, int val))
5072{
38b051a1
TM		 5073 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5074
5075 if (sc == NULL)
5076 return;
5077
5078 sc->info_callback = cb;
0f113f3e
MC		 5079}
5080
5081/*
5082 * One compiler (Diab DCC) doesn't like argument names in returned function
5083 * pointer.
5084 */
5085void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5086 int /* type */ ,
5087 int /* val */ ) {
38b051a1
TM		 5088 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5089
5090 if (sc == NULL)
5091 return NULL;
5092
5093 return sc->info_callback;
0f113f3e 5094}
58964a49 5095
0f113f3e
MC		 5096void SSL_set_verify_result(SSL *ssl, long arg)
5097{
38b051a1
TM		 5098 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5099
5100 if (sc == NULL)
5101 return;
5102
5103 sc->verify_result = arg;
0f113f3e 5104}
58964a49 5105
0821bcd4 5106long SSL_get_verify_result(const SSL *ssl)
0f113f3e 5107{
38b051a1
TM		 5108 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5109
5110 if (sc == NULL)
5111 return 0;
5112
5113 return sc->verify_result;
0f113f3e
MC		 5114}
5115
d9f1c639 5116size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 5117{
38b051a1
TM		 5118 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5119
5120 if (sc == NULL)
5121 return 0;
5122
6b8f5d0d 5123 if (outlen == 0)
38b051a1
TM		 5124 return sizeof(sc->s3.client_random);
5125 if (outlen > sizeof(sc->s3.client_random))
5126 outlen = sizeof(sc->s3.client_random);
5127 memcpy(out, sc->s3.client_random, outlen);
d9f1c639 5128 return outlen;
858618e7
NM		 5129}
5130
d9f1c639 5131size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 5132{
38b051a1
TM		 5133 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5134
5135 if (sc == NULL)
5136 return 0;
5137
6b8f5d0d 5138 if (outlen == 0)
38b051a1
TM		 5139 return sizeof(sc->s3.server_random);
5140 if (outlen > sizeof(sc->s3.server_random))
5141 outlen = sizeof(sc->s3.server_random);
5142 memcpy(out, sc->s3.server_random, outlen);
d9f1c639 5143 return outlen;
858618e7
NM		 5144}
5145
d9f1c639 5146size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 5147 unsigned char *out, size_t outlen)
858618e7 5148{
d9f1c639
MC		 5149 if (outlen == 0)
5150 return session->master_key_length;
8c1a5343 5151 if (outlen > session->master_key_length)
858618e7
NM		 5152 outlen = session->master_key_length;
5153 memcpy(out, session->master_key, outlen);
d9f1c639 5154 return outlen;
858618e7
NM		 5155}
5156
725b0f1e 5157int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 5158 size_t len)
5159{
5160 if (len > sizeof(sess->master_key))
5161 return 0;
5162
5163 memcpy(sess->master_key, in, len);
5164 sess->master_key_length = len;
911d63f2
MC		 5165 return 1;
5166}
5167
5168
0f113f3e
MC		 5169int SSL_set_ex_data(SSL *s, int idx, void *arg)
5170{
26a7d938 5171 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 5172}
5173
5174void *SSL_get_ex_data(const SSL *s, int idx)
5175{
26a7d938 5176 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 5177}
5178
0f113f3e
MC		 5179int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5180{
26a7d938 5181 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 5182}
5183
5184void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5185{
26a7d938 5186 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 5187}
58964a49 5188
0821bcd4 5189X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 5190{
26a7d938 5191 return ctx->cert_store;
0f113f3e 5192}
413c4f45 5193
0f113f3e
MC		 5194void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5195{
222561fe 5196 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 5197 ctx->cert_store = store;
5198}
413c4f45 5199
b50052db
TS		 5200void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5201{
5202 if (store != NULL)
5203 X509_STORE_up_ref(store);
5204 SSL_CTX_set_cert_store(ctx, store);
5205}
5206
0821bcd4 5207int SSL_want(const SSL *s)
0f113f3e 5208{
38b051a1
TM		 5209 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5210
5211 if (sc == NULL)
5212 return SSL_NOTHING;
5213
5214 return sc->rwstate;
0f113f3e 5215}
413c4f45 5216
ddac1974
NL		 5217#ifndef OPENSSL_NO_PSK
5218int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 5219{
5220 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 5221 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 5222 return 0;
5223 }
df6da24b 5224 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 5225 if (identity_hint != NULL) {
7644a9ae 5226 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 5227 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 5228 return 0;
5229 } else
df6da24b 5230 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 5231 return 1;
5232}
ddac1974
NL		 5233
5234int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e 5235{
38b051a1
TM		 5236 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5237
5238 if (sc == NULL)
0f113f3e
MC		 5239 return 0;
5240
0f113f3e 5241 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 5242 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 5243 return 0;
5244 }
38b051a1 5245 OPENSSL_free(sc->cert->psk_identity_hint);
0f113f3e 5246 if (identity_hint != NULL) {
38b051a1
TM		 5247 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5248 if (sc->cert->psk_identity_hint == NULL)
0f113f3e
MC		 5249 return 0;
5250 } else
38b051a1 5251 sc->cert->psk_identity_hint = NULL;
0f113f3e
MC		 5252 return 1;
5253}
ddac1974
NL		 5254
5255const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e 5256{
38b051a1
TM		 5257 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5258
5259 if (sc == NULL || sc->session == NULL)
0f113f3e 5260 return NULL;
38b051a1
TM		 5261
5262 return sc->session->psk_identity_hint;
0f113f3e 5263}
ddac1974
NL		 5264
5265const char *SSL_get_psk_identity(const SSL *s)
0f113f3e 5266{
38b051a1
TM		 5267 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5268
5269 if (sc == NULL || sc->session == NULL)
0f113f3e 5270 return NULL;
38b051a1
TM		 5271
5272 return sc->session->psk_identity;
0f113f3e 5273}
7806f3dd 5274
8cbfcc70 5275void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e 5276{
38b051a1
TM		 5277 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5278
5279 if (sc == NULL)
5280 return;
5281
5282 sc->psk_client_callback = cb;
0f113f3e 5283}
7806f3dd 5284
8cbfcc70 5285void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 5286{
5287 ctx->psk_client_callback = cb;
5288}
7806f3dd 5289
8cbfcc70 5290void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e 5291{
38b051a1
TM		 5292 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5293
5294 if (sc == NULL)
5295 return;
5296
5297 sc->psk_server_callback = cb;
0f113f3e 5298}
7806f3dd 5299
8cbfcc70 5300void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 5301{
5302 ctx->psk_server_callback = cb;
5303}
5304#endif
5305
f46184bd
MC		 5306void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5307{
38b051a1
TM		 5308 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5309
5310 if (sc == NULL)
5311 return;
5312
5313 sc->psk_find_session_cb = cb;
f46184bd
MC		 5314}
5315
5316void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5317 SSL_psk_find_session_cb_func cb)
5318{
5319 ctx->psk_find_session_cb = cb;
5320}
5321
5322void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5323{
38b051a1
TM		 5324 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5325
5326 if (sc == NULL)
5327 return;
5328
5329 sc->psk_use_session_cb = cb;
f46184bd
MC		 5330}
5331
5332void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5333 SSL_psk_use_session_cb_func cb)
5334{
5335 ctx->psk_use_session_cb = cb;
5336}
5337
0f113f3e
MC		 5338void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5339 void (*cb) (int write_p, int version,
5340 int content_type, const void *buf,
5341 size_t len, SSL *ssl, void *arg))
5342{
5343 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5344}
5345
5346void SSL_set_msg_callback(SSL *ssl,
5347 void (*cb) (int write_p, int version,
5348 int content_type, const void *buf,
5349 size_t len, SSL *ssl, void *arg))
5350{
5351 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5352}
a661b653 5353
7c2d4fee 5354void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 5355 int (*cb) (SSL *ssl,
5356 int
5357 is_forward_secure))
5358{
5359 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5360 (void (*)(void))cb);
5361}
5362
7c2d4fee 5363void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 5364 int (*cb) (SSL *ssl,
5365 int is_forward_secure))
5366{
5367 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5368 (void (*)(void))cb);
5369}
5370
c649d10d
TS		 5371void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5372 size_t (*cb) (SSL *ssl, int type,
5373 size_t len, void *arg))
5374{
5375 ctx->record_padding_cb = cb;
5376}
5377
5378void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5379{
5380 ctx->record_padding_arg = arg;
5381}
5382
3499327b 5383void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 5384{
5385 return ctx->record_padding_arg;
5386}
5387
5388int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5389{
5390 /* block size of 0 or 1 is basically no padding */
5391 if (block_size == 1)
5392 ctx->block_padding = 0;
5393 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5394 ctx->block_padding = block_size;
5395 else
5396 return 0;
5397 return 1;
5398}
5399
a6d36303 5400int SSL_set_record_padding_callback(SSL *ssl,
c649d10d
TS		 5401 size_t (*cb) (SSL *ssl, int type,
5402 size_t len, void *arg))
5403{
a6d36303 5404 BIO *b;
38b051a1
TM		 5405 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5406
5407 if (sc == NULL)
5408 return 0;
a6d36303
VF		 5409
5410 b = SSL_get_wbio(ssl);
5411 if (b == NULL || !BIO_get_ktls_send(b)) {
eb7d6c2a 5412 sc->rlayer.record_padding_cb = cb;
a6d36303
VF		 5413 return 1;
5414 }
5415 return 0;
c649d10d
TS		 5416}
5417
5418void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5419{
38b051a1
TM		 5420 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5421
5422 if (sc == NULL)
5423 return;
5424
eb7d6c2a 5425 sc->rlayer.record_padding_arg = arg;
c649d10d
TS		 5426}
5427
3499327b 5428void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d 5429{
38b051a1
TM		 5430 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5431
5432 if (sc == NULL)
5433 return NULL;
5434
eb7d6c2a 5435 return sc->rlayer.record_padding_arg;
c649d10d
TS		 5436}
5437
5438int SSL_set_block_padding(SSL *ssl, size_t block_size)
5439{
38b051a1
TM		 5440 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5441
5442 if (sc == NULL)
5443 return 0;
5444
c649d10d
TS		 5445 /* block size of 0 or 1 is basically no padding */
5446 if (block_size == 1)
eb7d6c2a 5447 sc->rlayer.block_padding = 0;
c649d10d 5448 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
eb7d6c2a 5449 sc->rlayer.block_padding = block_size;
c649d10d
TS		 5450 else
5451 return 0;
5452 return 1;
5453}
5454
9d0a8bb7
MC		 5455int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5456{
38b051a1
TM		 5457 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5458
5459 if (sc == NULL)
5460 return 0;
5461
5462 sc->num_tickets = num_tickets;
9d0a8bb7
MC		 5463
5464 return 1;
5465}
5466
3499327b 5467size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7 5468{
38b051a1
TM		 5469 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5470
5471 if (sc == NULL)
5472 return 0;
5473
5474 return sc->num_tickets;
9d0a8bb7
MC		 5475}
5476
5477int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5478{
5479 ctx->num_tickets = num_tickets;
5480
5481 return 1;
5482}
5483
3499327b 5484size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 5485{
5486 return ctx->num_tickets;
5487}
5488
48fbcbac 5489/* Retrieve handshake hashes */
38b051a1
TM		 5490int ssl_handshake_hash(SSL_CONNECTION *s,
5491 unsigned char *out, size_t outlen,
8c1a5343 5492 size_t *hashlen)
48fbcbac 5493{
6e59a892 5494 EVP_MD_CTX *ctx = NULL;
555cbb32 5495 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
ed576acd 5496 int hashleni = EVP_MD_CTX_get_size(hdgst);
8c1a5343
MC		 5497 int ret = 0;
5498
f63a17d6 5499 if (hashleni < 0 || (size_t)hashleni > outlen) {
c48ffbcc 5500 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
28ba2541 5501 goto err;
f63a17d6 5502 }
8c1a5343 5503
bfb0641f 5504 ctx = EVP_MD_CTX_new();
147ed5f9
TL		 5505 if (ctx == NULL) {
5506 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6e59a892 5507 goto err;
147ed5f9 5508 }
8c1a5343 5509
6e59a892 5510 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6 5511 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
c48ffbcc 5512 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
8c1a5343 5513 goto err;
f63a17d6 5514 }
8c1a5343
MC		 5515
5516 *hashlen = hashleni;
5517
5518 ret = 1;
48fbcbac 5519 err:
bfb0641f 5520 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 5521 return ret;
5522}
5523
c04b66b1 5524int SSL_session_reused(const SSL *s)
0f113f3e 5525{
38b051a1
TM		 5526 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5527
5528 if (sc == NULL)
5529 return 0;
5530
5531 return sc->hit;
0f113f3e 5532}
08557cf2 5533
69443116 5534int SSL_is_server(const SSL *s)
0f113f3e 5535{
38b051a1
TM		 5536 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5537
5538 if (sc == NULL)
5539 return 0;
5540
5541 return sc->server;
0f113f3e 5542}
87adf1fa 5543
00db8c60 5544#ifndef OPENSSL_NO_DEPRECATED_1_1_0
47153c72
RS		 5545void SSL_set_debug(SSL *s, int debug)
5546{
5547 /* Old function was do-nothing anyway... */
5548 (void)s;
5549 (void)debug;
5550}
5551#endif
5552
b362ccab 5553void SSL_set_security_level(SSL *s, int level)
0f113f3e 5554{
38b051a1
TM		 5555 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5556
5557 if (sc == NULL)
5558 return;
5559
5560 sc->cert->sec_level = level;
0f113f3e 5561}
b362ccab
DSH		 5562
5563int SSL_get_security_level(const SSL *s)
0f113f3e 5564{
38b051a1
TM		 5565 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5566
5567 if (sc == NULL)
5568 return 0;
5569
5570 return sc->cert->sec_level;
0f113f3e 5571}
b362ccab 5572
0f113f3e 5573void SSL_set_security_callback(SSL *s,
a230b26e
EK		 5574 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5575 int op, int bits, int nid,
5576 void *other, void *ex))
0f113f3e 5577{
38b051a1
TM		 5578 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5579
5580 if (sc == NULL)
5581 return;
5582
5583 sc->cert->sec_cb = cb;
0f113f3e 5584}
b362ccab 5585
a230b26e
EK		 5586int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5587 const SSL_CTX *ctx, int op,
5588 int bits, int nid, void *other,
5589 void *ex) {
38b051a1
TM		 5590 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5591
5592 if (sc == NULL)
5593 return NULL;
5594
5595 return sc->cert->sec_cb;
0f113f3e 5596}
b362ccab
DSH		 5597
5598void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e 5599{
38b051a1
TM		 5600 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5601
5602 if (sc == NULL)
5603 return;
5604
5605 sc->cert->sec_ex = ex;
0f113f3e 5606}
b362ccab
DSH		 5607
5608void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e 5609{
38b051a1
TM		 5610 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5611
5612 if (sc == NULL)
5613 return NULL;
5614
5615 return sc->cert->sec_ex;
0f113f3e 5616}
b362ccab
DSH		 5617
5618void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 5619{
5620 ctx->cert->sec_level = level;
5621}
b362ccab
DSH		 5622
5623int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 5624{
5625 return ctx->cert->sec_level;
5626}
b362ccab 5627
0f113f3e 5628void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 5629 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5630 int op, int bits, int nid,
5631 void *other, void *ex))
0f113f3e
MC		 5632{
5633 ctx->cert->sec_cb = cb;
5634}
b362ccab 5635
e4646a89
KR		 5636int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5637 const SSL_CTX *ctx,
0f113f3e
MC		 5638 int op, int bits,
5639 int nid,
5640 void *other,
5641 void *ex) {
5642 return ctx->cert->sec_cb;
5643}
b362ccab
DSH		 5644
5645void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 5646{
5647 ctx->cert->sec_ex = ex;
5648}
b362ccab
DSH		 5649
5650void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 5651{
5652 return ctx->cert->sec_ex;
5653}
b362ccab 5654
56bd1783 5655uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
8106cb8b
VD		 5656{
5657 return ctx->options;
5658}
a230b26e 5659
56bd1783 5660uint64_t SSL_get_options(const SSL *s)
8106cb8b 5661{
38b051a1
TM		 5662 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5663
5664 if (sc == NULL)
5665 return 0;
5666
5667 return sc->options;
8106cb8b 5668}
a230b26e 5669
56bd1783 5670uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
8106cb8b
VD		 5671{
5672 return ctx->options |= op;
5673}
a230b26e 5674
56bd1783 5675uint64_t SSL_set_options(SSL *s, uint64_t op)
8106cb8b 5676{
38b051a1 5677 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4566dae7 5678 OSSL_PARAM options[2], *opts = options;
38b051a1
TM		 5679
5680 if (sc == NULL)
5681 return 0;
5682
4566dae7
MC		 5683 sc->options |= op;
5684
5685 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5686 &sc->options);
5687 *opts = OSSL_PARAM_construct_end();
5688
5689 /* Ignore return value */
5690 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5691
5692 return sc->options;
8106cb8b 5693}
a230b26e 5694
56bd1783 5695uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
8106cb8b
VD		 5696{
5697 return ctx->options &= ~op;
5698}
a230b26e 5699
56bd1783 5700uint64_t SSL_clear_options(SSL *s, uint64_t op)
8106cb8b 5701{
38b051a1
TM		 5702 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5703
5704 if (sc == NULL)
5705 return 0;
5706
5707 return sc->options &= ~op;
8106cb8b
VD		 5708}
5709
696178ed
DSH		 5710STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5711{
38b051a1
TM		 5712 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5713
5714 if (sc == NULL)
5715 return NULL;
5716
5717 return sc->verified_chain;
696178ed
DSH		 5718}
5719
0f113f3e 5720IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 5721
5722#ifndef OPENSSL_NO_CT
5723
5724/*
5725 * Moves SCTs from the |src| stack to the |dst| stack.
5726 * The source of each SCT will be set to |origin|.
5727 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5728 * the caller.
5729 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5730 */
a230b26e
EK		 5731static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5732 sct_source_t origin)
ed29e82a
RP		 5733{
5734 int scts_moved = 0;
5735 SCT *sct = NULL;
5736
5737 if (*dst == NULL) {
5738 *dst = sk_SCT_new_null();
5739 if (*dst == NULL) {
e077455e 5740 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
ed29e82a
RP		 5741 goto err;
5742 }
5743 }
5744
a8086e6b 5745 while ((sct = sk_SCT_pop(src)) != NULL) {
ed29e82a
RP		 5746 if (SCT_set_source(sct, origin) != 1)
5747 goto err;
5748
5749 if (sk_SCT_push(*dst, sct) <= 0)
5750 goto err;
5751 scts_moved += 1;
5752 }
5753
5754 return scts_moved;
a230b26e 5755 err:
ed29e82a 5756 if (sct != NULL)
a230b26e 5757 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 5758 return -1;
ed29e82a
RP		 5759}
5760
5761/*
a230b26e 5762 * Look for data collected during ServerHello and parse if found.
6b13bd1d 5763 * Returns the number of SCTs extracted.
a230b26e 5764 */
38b051a1 5765static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
ed29e82a
RP		 5766{
5767 int scts_extracted = 0;
5768
aff8c126
RS		 5769 if (s->ext.scts != NULL) {
5770 const unsigned char *p = s->ext.scts;
5771 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 5772
5773 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5774
5775 SCT_LIST_free(scts);
5776 }
5777
5778 return scts_extracted;
5779}
5780
5781/*
5782 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5783 * contains an SCT X509 extension. They will be stored in |s->scts|.
5784 * Returns:
5785 * - The number of SCTs extracted, assuming an OCSP response exists.
5786 * - 0 if no OCSP response exists or it contains no SCTs.
5787 * - A negative integer if an error occurs.
5788 */
38b051a1 5789static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
ed29e82a 5790{
a230b26e 5791# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 5792 int scts_extracted = 0;
5793 const unsigned char *p;
5794 OCSP_BASICRESP *br = NULL;
5795 OCSP_RESPONSE *rsp = NULL;
5796 STACK_OF(SCT) *scts = NULL;
5797 int i;
5798
aff8c126 5799 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 5800 goto err;
5801
aff8c126
RS		 5802 p = s->ext.ocsp.resp;
5803 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 5804 if (rsp == NULL)
5805 goto err;
5806
5807 br = OCSP_response_get1_basic(rsp);
5808 if (br == NULL)
5809 goto err;
5810
5811 for (i = 0; i < OCSP_resp_count(br); ++i) {
5812 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5813
5814 if (single == NULL)
5815 continue;
5816
a230b26e
EK		 5817 scts =
5818 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5819 scts_extracted =
5820 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 5821 if (scts_extracted < 0)
5822 goto err;
5823 }
a230b26e 5824 err:
ed29e82a
RP		 5825 SCT_LIST_free(scts);
5826 OCSP_BASICRESP_free(br);
5827 OCSP_RESPONSE_free(rsp);
5828 return scts_extracted;
a230b26e 5829# else
3e41ac35
MC		 5830 /* Behave as if no OCSP response exists */
5831 return 0;
a230b26e 5832# endif
ed29e82a
RP		 5833}
5834
5835/*
5836 * Attempts to extract SCTs from the peer certificate.
5837 * Return the number of SCTs extracted, or a negative integer if an error
5838 * occurs.
5839 */
38b051a1 5840static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
ed29e82a
RP		 5841{
5842 int scts_extracted = 0;
3f3c7d26 5843 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 5844
5845 if (cert != NULL) {
5846 STACK_OF(SCT) *scts =
5847 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5848
5849 scts_extracted =
5850 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5851
5852 SCT_LIST_free(scts);
5853 }
5854
5855 return scts_extracted;
5856}
5857
5858/*
5859 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5860 * response (if it exists) and X509v3 extensions in the certificate.
5861 * Returns NULL if an error occurs.
5862 */
5863const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5864{
38b051a1
TM		 5865 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5866
5867 if (sc == NULL)
5868 return NULL;
5869
5870 if (!sc->scts_parsed) {
5871 if (ct_extract_tls_extension_scts(sc) < 0 ||
5872 ct_extract_ocsp_response_scts(sc) < 0 ||
5873 ct_extract_x509v3_extension_scts(sc) < 0)
ed29e82a
RP		 5874 goto err;
5875
38b051a1 5876 sc->scts_parsed = 1;
ed29e82a 5877 }
38b051a1 5878 return sc->scts;
a230b26e 5879 err:
ed29e82a
RP		 5880 return NULL;
5881}
5882
a230b26e 5883static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 5884 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 5885{
43341433
VD		 5886 return 1;
5887}
5888
a230b26e 5889static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 5890 const STACK_OF(SCT) *scts, void *unused_arg)
5891{
5892 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5893 int i;
ed29e82a 5894
43341433
VD		 5895 for (i = 0; i < count; ++i) {
5896 SCT *sct = sk_SCT_value(scts, i);
5897 int status = SCT_get_validation_status(sct);
5898
5899 if (status == SCT_VALIDATION_STATUS_VALID)
5900 return 1;
5901 }
6849b73c 5902 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
43341433
VD		 5903 return 0;
5904}
5905
5906int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5907 void *arg)
5908{
38b051a1
TM		 5909 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5910
5911 if (sc == NULL)
5912 return 0;
5913
ed29e82a
RP		 5914 /*
5915 * Since code exists that uses the custom extension handler for CT, look
5916 * for this and throw an error if they have already registered to use CT.
5917 */
5918 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 5919 TLSEXT_TYPE_signed_certificate_timestamp))
5920 {
6849b73c 5921 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5922 return 0;
ed29e82a
RP		 5923 }
5924
ed29e82a 5925 if (callback != NULL) {
a230b26e
EK		 5926 /*
5927 * If we are validating CT, then we MUST accept SCTs served via OCSP
5928 */
ed29e82a 5929 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 5930 return 0;
ed29e82a
RP		 5931 }
5932
38b051a1
TM		 5933 sc->ct_validation_callback = callback;
5934 sc->ct_validation_callback_arg = arg;
43341433
VD		 5935
5936 return 1;
ed29e82a
RP		 5937}
5938
43341433 5939int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 5940 ssl_ct_validation_cb callback, void *arg)
ed29e82a 5941{
ed29e82a
RP		 5942 /*
5943 * Since code exists that uses the custom extension handler for CT, look for
5944 * this and throw an error if they have already registered to use CT.
5945 */
5946 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 5947 TLSEXT_TYPE_signed_certificate_timestamp))
5948 {
6849b73c 5949 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5950 return 0;
ed29e82a
RP		 5951 }
5952
5953 ctx->ct_validation_callback = callback;
5954 ctx->ct_validation_callback_arg = arg;
43341433 5955 return 1;
ed29e82a
RP		 5956}
5957
43341433 5958int SSL_ct_is_enabled(const SSL *s)
ed29e82a 5959{
38b051a1
TM		 5960 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5961
5962 if (sc == NULL)
5963 return 0;
5964
5965 return sc->ct_validation_callback != NULL;
ed29e82a
RP		 5966}
5967
43341433 5968int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 5969{
43341433 5970 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 5971}
5972
38b051a1 5973int ssl_validate_ct(SSL_CONNECTION *s)
ed29e82a
RP		 5974{
5975 int ret = 0;
3f3c7d26 5976 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 5977 X509 *issuer;
b9aec69a 5978 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 5979 CT_POLICY_EVAL_CTX *ctx = NULL;
5980 const STACK_OF(SCT) *scts;
5981
43341433
VD		 5982 /*
5983 * If no callback is set, the peer is anonymous, or its chain is invalid,
5984 * skip SCT validation - just return success. Applications that continue
5985 * handshakes without certificates, with unverified chains, or pinned leaf
5986 * certificates are outside the scope of the WebPKI and CT.
5987 *
5988 * The above exclusions notwithstanding the vast majority of peers will
5989 * have rather ordinary certificate chains validated by typical
5990 * applications that perform certificate verification and therefore will
5991 * process SCTs when enabled.
5992 */
5993 if (s->ct_validation_callback == NULL || cert == NULL ||
5994 s->verify_result != X509_V_OK ||
a230b26e 5995 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 5996 return 1;
5997
43341433
VD		 5998 /*
5999 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6000 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6001 */
6002 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6003 switch (dane->mtlsa->usage) {
6004 case DANETLS_USAGE_DANE_TA:
6005 case DANETLS_USAGE_DANE_EE:
6006 return 1;
6007 }
ed29e82a
RP		 6008 }
6009
38b051a1
TM		 6010 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6011 SSL_CONNECTION_GET_CTX(s)->propq);
ed29e82a 6012 if (ctx == NULL) {
e077455e 6013 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
ed29e82a
RP		 6014 goto end;
6015 }
6016
43341433 6017 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 6018 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6019 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
38b051a1
TM		 6020 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6021 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6a71e06d 6022 CT_POLICY_EVAL_CTX_set_time(
38b051a1 6023 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
ed29e82a 6024
38b051a1 6025 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
ed29e82a 6026
43341433
VD		 6027 /*
6028 * This function returns success (> 0) only when all the SCTs are valid, 0
6029 * when some are invalid, and < 0 on various internal errors (out of
6030 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6031 * reason to abort the handshake, that decision is up to the callback.
6032 * Therefore, we error out only in the unexpected case that the return
6033 * value is negative.
6034 *
6035 * XXX: One might well argue that the return value of this function is an
f430ba31 6036 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 6037 * status of each of the provided SCTs. So long as it correctly separates
6038 * the wheat from the chaff it should return success. Failure in this case
6039 * ought to correspond to an inability to carry out its duties.
6040 */
6041 if (SCT_LIST_validate(scts, ctx) < 0) {
c48ffbcc 6042 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 6043 goto end;
6044 }
6045
6046 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6047 if (ret < 0)
a230b26e 6048 ret = 0; /* This function returns 0 on failure */
f63a17d6 6049 if (!ret)
c48ffbcc 6050 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
ed29e82a 6051
a230b26e 6052 end:
ed29e82a 6053 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 6054 /*
6055 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6056 * failure return code here. Also the application may wish the complete
6057 * the handshake, and then disconnect cleanly at a higher layer, after
6058 * checking the verification status of the completed connection.
6059 *
6060 * We therefore force a certificate verification failure which will be
6061 * visible via SSL_get_verify_result() and cached as part of any resumed
6062 * session.
6063 *
6064 * Note: the permissive callback is for information gathering only, always
6065 * returns success, and does not affect verification status. Only the
6066 * strict callback or a custom application-specified callback can trigger
6067 * connection failure or record a verification error.
6068 */
6069 if (ret <= 0)
6070 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 6071 return ret;
6072}
6073
43341433
VD		 6074int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6075{
6076 switch (validation_mode) {
6077 default:
6849b73c 6078 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 6079 return 0;
6080 case SSL_CT_VALIDATION_PERMISSIVE:
6081 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6082 case SSL_CT_VALIDATION_STRICT:
6083 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6084 }
6085}
6086
6087int SSL_enable_ct(SSL *s, int validation_mode)
6088{
6089 switch (validation_mode) {
6090 default:
6849b73c 6091 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 6092 return 0;
6093 case SSL_CT_VALIDATION_PERMISSIVE:
6094 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6095 case SSL_CT_VALIDATION_STRICT:
6096 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6097 }
6098}
6099
ed29e82a
RP		 6100int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6101{
328f36c5 6102 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 6103}
6104
6105int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6106{
6107 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6108}
6109
a230b26e 6110void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 6111{
6112 CTLOG_STORE_free(ctx->ctlog_store);
6113 ctx->ctlog_store = logs;
6114}
6115
6116const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6117{
6118 return ctx->ctlog_store;
6119}
6120
6b1bb98f
BK		 6121#endif /* OPENSSL_NO_CT */
6122
a9c0d8be
DB		 6123void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6124 void *arg)
6b1bb98f 6125{
a9c0d8be
DB		 6126 c->client_hello_cb = cb;
6127 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 6128}
6129
a9c0d8be 6130int SSL_client_hello_isv2(SSL *s)
6b1bb98f 6131{
38b051a1
TM		 6132 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6133
6134 if (sc == NULL)
6135 return 0;
6136
6137 if (sc->clienthello == NULL)
6b1bb98f 6138 return 0;
38b051a1 6139 return sc->clienthello->isv2;
6b1bb98f
BK		 6140}
6141
a9c0d8be 6142unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f 6143{
38b051a1
TM		 6144 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6145
6146 if (sc == NULL)
6147 return 0;
6148
6149 if (sc->clienthello == NULL)
6b1bb98f 6150 return 0;
38b051a1 6151 return sc->clienthello->legacy_version;
6b1bb98f
BK		 6152}
6153
a9c0d8be 6154size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f 6155{
38b051a1
TM		 6156 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6157
6158 if (sc == NULL)
6159 return 0;
6160
6161 if (sc->clienthello == NULL)
6b1bb98f
BK		 6162 return 0;
6163 if (out != NULL)
38b051a1 6164 *out = sc->clienthello->random;
6b1bb98f
BK		 6165 return SSL3_RANDOM_SIZE;
6166}
6167
a9c0d8be 6168size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f 6169{
38b051a1
TM		 6170 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6171
6172 if (sc == NULL)
6173 return 0;
6174
6175 if (sc->clienthello == NULL)
6b1bb98f
BK		 6176 return 0;
6177 if (out != NULL)
38b051a1
TM		 6178 *out = sc->clienthello->session_id;
6179 return sc->clienthello->session_id_len;
6b1bb98f
BK		 6180}
6181
a9c0d8be 6182size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f 6183{
38b051a1
TM		 6184 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6185
6186 if (sc == NULL)
6187 return 0;
6188
6189 if (sc->clienthello == NULL)
6b1bb98f
BK		 6190 return 0;
6191 if (out != NULL)
38b051a1
TM		 6192 *out = PACKET_data(&sc->clienthello->ciphersuites);
6193 return PACKET_remaining(&sc->clienthello->ciphersuites);
6b1bb98f
BK		 6194}
6195
a9c0d8be 6196size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f 6197{
38b051a1
TM		 6198 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6199
6200 if (sc == NULL)
6201 return 0;
6202
6203 if (sc->clienthello == NULL)
6b1bb98f
BK		 6204 return 0;
6205 if (out != NULL)
38b051a1
TM		 6206 *out = sc->clienthello->compressions;
6207 return sc->clienthello->compressions_len;
6b1bb98f
BK		 6208}
6209
a9c0d8be 6210int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 6211{
6212 RAW_EXTENSION *ext;
6213 int *present;
6214 size_t num = 0, i;
38b051a1 6215 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
193b5d76 6216
38b051a1 6217 if (sc == NULL)
193b5d76 6218 return 0;
38b051a1
TM		 6219
6220 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6221 return 0;
6222 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6223 ext = sc->clienthello->pre_proc_exts + i;
193b5d76
BK		 6224 if (ext->present)
6225 num++;
6226 }
6fda11ae 6227 if (num == 0) {
6228 *out = NULL;
6229 *outlen = 0;
6230 return 1;
6231 }
e077455e 6232 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
193b5d76 6233 return 0;
38b051a1
TM		 6234 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6235 ext = sc->clienthello->pre_proc_exts + i;
193b5d76
BK		 6236 if (ext->present) {
6237 if (ext->received_order >= num)
6238 goto err;
6239 present[ext->received_order] = ext->type;
6240 }
6241 }
6242 *out = present;
6243 *outlen = num;
6244 return 1;
6245 err:
6246 OPENSSL_free(present);
6247 return 0;
6248}
6249
13a53fbf
PL		 6250int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6251{
6252 RAW_EXTENSION *ext;
6253 size_t num = 0, i;
38b051a1
TM		 6254 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6255
6256 if (sc == NULL)
6257 return 0;
13a53fbf 6258
38b051a1 6259 if (sc->clienthello == NULL || num_exts == NULL)
13a53fbf 6260 return 0;
38b051a1
TM		 6261 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6262 ext = sc->clienthello->pre_proc_exts + i;
13a53fbf
PL		 6263 if (ext->present)
6264 num++;
6265 }
6266 if (num == 0) {
6267 *num_exts = 0;
6268 return 1;
6269 }
6270 if (exts == NULL) {
6271 *num_exts = num;
6272 return 1;
6273 }
6274 if (*num_exts < num)
6275 return 0;
38b051a1
TM		 6276 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6277 ext = sc->clienthello->pre_proc_exts + i;
13a53fbf
PL		 6278 if (ext->present) {
6279 if (ext->received_order >= num)
6280 return 0;
6281 exts[ext->received_order] = ext->type;
6282 }
6283 }
6284 *num_exts = num;
6285 return 1;
6286}
6287
a9c0d8be 6288int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 6289 size_t *outlen)
6290{
6291 size_t i;
6292 RAW_EXTENSION *r;
38b051a1 6293 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6b1bb98f 6294
38b051a1 6295 if (sc == NULL)
6b1bb98f 6296 return 0;
38b051a1
TM		 6297
6298 if (sc->clienthello == NULL)
6299 return 0;
6300 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6301 r = sc->clienthello->pre_proc_exts + i;
6b1bb98f
BK		 6302 if (r->present && r->type == type) {
6303 if (out != NULL)
6304 *out = PACKET_data(&r->data);
6305 if (outlen != NULL)
6306 *outlen = PACKET_remaining(&r->data);
6307 return 1;
6308 }
6309 }
6310 return 0;
6311}
2faa1b48 6312
a58eb06d
TS		 6313int SSL_free_buffers(SSL *ssl)
6314{
38b051a1
TM		 6315 RECORD_LAYER *rl;
6316 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6317
6318 if (sc == NULL)
6319 return 0;
6320
6321 rl = &sc->rlayer;
a58eb06d 6322
7eb39ecb
MC		 6323 return rl->rrlmethod->free_buffers(rl->rrl)
6324 && rl->wrlmethod->free_buffers(rl->wrl);
a58eb06d
TS		 6325}
6326
6327int SSL_alloc_buffers(SSL *ssl)
6328{
7eb39ecb 6329 RECORD_LAYER *rl;
38b051a1
TM		 6330 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6331
6332 if (sc == NULL)
6333 return 0;
6334
7eb39ecb
MC		 6335 rl = &sc->rlayer;
6336
6337 return rl->rrlmethod->alloc_buffers(rl->rrl)
6338 && rl->wrlmethod->alloc_buffers(rl->wrl);
a58eb06d
TS		 6339}
6340
2faa1b48
CB		 6341void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6342{
6343 ctx->keylog_callback = cb;
6344}
6345
6346SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6347{
6348 return ctx->keylog_callback;
6349}
6350
6351static int nss_keylog_int(const char *prefix,
38b051a1 6352 SSL_CONNECTION *sc,
2faa1b48
CB		 6353 const uint8_t *parameter_1,
6354 size_t parameter_1_len,
6355 const uint8_t *parameter_2,
6356 size_t parameter_2_len)
6357{
6358 char *out = NULL;
6359 char *cursor = NULL;
6360 size_t out_len = 0;
6361 size_t i;
6362 size_t prefix_len;
38b051a1 6363 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
2faa1b48 6364
38b051a1 6365 if (sctx->keylog_callback == NULL)
20870286 6366 return 1;
2faa1b48
CB		 6367
6368 /*
6369 * Our output buffer will contain the following strings, rendered with
6370 * space characters in between, terminated by a NULL character: first the
6371 * prefix, then the first parameter, then the second parameter. The
6372 * meaning of each parameter depends on the specific key material being
6373 * logged. Note that the first and second parameters are encoded in
6374 * hexadecimal, so we need a buffer that is twice their lengths.
6375 */
6376 prefix_len = strlen(prefix);
e931f370 6377 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
e077455e 6378 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
2faa1b48 6379 return 0;
2faa1b48
CB		 6380
6381 strcpy(cursor, prefix);
6382 cursor += prefix_len;
6383 *cursor++ = ' ';
6384
6385 for (i = 0; i < parameter_1_len; i++) {
6386 sprintf(cursor, "%02x", parameter_1[i]);
6387 cursor += 2;
6388 }
6389 *cursor++ = ' ';
6390
6391 for (i = 0; i < parameter_2_len; i++) {
6392 sprintf(cursor, "%02x", parameter_2[i]);
6393 cursor += 2;
6394 }
6395 *cursor = '\0';
6396
38b051a1 6397 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
e931f370 6398 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 6399 return 1;
6400
6401}
6402
38b051a1 6403int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
2faa1b48
CB		 6404 const uint8_t *encrypted_premaster,
6405 size_t encrypted_premaster_len,
6406 const uint8_t *premaster,
6407 size_t premaster_len)
6408{
6409 if (encrypted_premaster_len < 8) {
38b051a1 6410 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 6411 return 0;
6412 }
6413
f0deb4d3 6414 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48 6415 return nss_keylog_int("RSA",
38b051a1 6416 sc,
2faa1b48 6417 encrypted_premaster,
f0deb4d3 6418 8,
2faa1b48
CB		 6419 premaster,
6420 premaster_len);
6421}
6422
38b051a1 6423int ssl_log_secret(SSL_CONNECTION *sc,
2c7bd692
CB		 6424 const char *label,
6425 const uint8_t *secret,
6426 size_t secret_len)
2faa1b48 6427{
2c7bd692 6428 return nss_keylog_int(label,
38b051a1
TM		 6429 sc,
6430 sc->s3.client_random,
2c7bd692
CB		 6431 SSL3_RANDOM_SIZE,
6432 secret,
6433 secret_len);
2faa1b48
CB		 6434}
6435
ccb8e6e0
BK		 6436#define SSLV2_CIPHER_LEN 3
6437
38b051a1 6438int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 6439{
ccb8e6e0 6440 int n;
ccb8e6e0
BK		 6441
6442 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6443
6444 if (PACKET_remaining(cipher_suites) == 0) {
c48ffbcc 6445 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 6446 return 0;
ccb8e6e0
BK		 6447 }
6448
6449 if (PACKET_remaining(cipher_suites) % n != 0) {
c48ffbcc 6450 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 6451 return 0;
ccb8e6e0
BK		 6452 }
6453
555cbb32
TS		 6454 OPENSSL_free(s->s3.tmp.ciphers_raw);
6455 s->s3.tmp.ciphers_raw = NULL;
6456 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 6457
6458 if (sslv2format) {
6459 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6460 PACKET sslv2ciphers = *cipher_suites;
6461 unsigned int leadbyte;
6462 unsigned char *raw;
6463
6464 /*
6465 * We store the raw ciphers list in SSLv3+ format so we need to do some
6466 * preprocessing to convert the list first. If there are any SSLv2 only
6467 * ciphersuites with a non-zero leading byte then we are going to
6468 * slightly over allocate because we won't store those. But that isn't a
6469 * problem.
6470 */
6471 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 6472 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 6473 if (raw == NULL) {
e077455e 6474 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
f63a17d6 6475 return 0;
ccb8e6e0 6476 }
555cbb32 6477 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 6478 PACKET_remaining(&sslv2ciphers) > 0;
6479 raw += TLS_CIPHER_LEN) {
6480 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6481 || (leadbyte == 0
6482 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6483 TLS_CIPHER_LEN))
6484 || (leadbyte != 0
6485 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
c48ffbcc 6486 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
555cbb32
TS		 6487 OPENSSL_free(s->s3.tmp.ciphers_raw);
6488 s->s3.tmp.ciphers_raw = NULL;
6489 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 6490 return 0;
ccb8e6e0
BK		 6491 }
6492 if (leadbyte == 0)
555cbb32 6493 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 6494 }
555cbb32
TS		 6495 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6496 &s->s3.tmp.ciphers_rawlen)) {
c48ffbcc 6497 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
f63a17d6 6498 return 0;
ccb8e6e0 6499 }
90134d98 6500 return 1;
90134d98
BK		 6501}
6502
6503int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6504 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6505 STACK_OF(SSL_CIPHER) **scsvs)
6506{
90134d98 6507 PACKET pkt;
38b051a1
TM		 6508 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6509
6510 if (sc == NULL)
6511 return 0;
90134d98
BK		 6512
6513 if (!PACKET_buf_init(&pkt, bytes, len))
6514 return 0;
38b051a1 6515 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 6516}
6517
38b051a1
TM		 6518int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6519 STACK_OF(SSL_CIPHER) **skp,
6520 STACK_OF(SSL_CIPHER) **scsvs_out,
6521 int sslv2format, int fatal)
90134d98
BK		 6522{
6523 const SSL_CIPHER *c;
6524 STACK_OF(SSL_CIPHER) *sk = NULL;
6525 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6526 int n;
6527 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6528 unsigned char cipher[SSLV2_CIPHER_LEN];
6529
6530 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6531
6532 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6 6533 if (fatal)
c48ffbcc 6534 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
f63a17d6 6535 else
6849b73c 6536 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 6537 return 0;
6538 }
6539
6540 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 6541 if (fatal)
c48ffbcc 6542 SSLfatal(s, SSL_AD_DECODE_ERROR,
f63a17d6
MC		 6543 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6544 else
6849b73c 6545 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 6546 return 0;
6547 }
6548
6549 sk = sk_SSL_CIPHER_new_null();
6550 scsvs = sk_SSL_CIPHER_new_null();
6551 if (sk == NULL || scsvs == NULL) {
f63a17d6 6552 if (fatal)
e077455e 6553 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
f63a17d6 6554 else
e077455e 6555 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
90134d98
BK		 6556 goto err;
6557 }
ccb8e6e0
BK		 6558
6559 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6560 /*
6561 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6562 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6563 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6564 */
6565 if (sslv2format && cipher[0] != '\0')
6566 continue;
6567
ccb8e6e0
BK		 6568 /* For SSLv2-compat, ignore leading 0-byte. */
6569 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6570 if (c != NULL) {
90134d98
BK		 6571 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6572 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6 6573 if (fatal)
e077455e 6574 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
f63a17d6 6575 else
e077455e 6576 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
ccb8e6e0
BK		 6577 goto err;
6578 }
6579 }
6580 }
6581 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6 6582 if (fatal)
c48ffbcc 6583 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
f63a17d6 6584 else
6849b73c 6585 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 6586 goto err;
6587 }
6588
90134d98
BK		 6589 if (skp != NULL)
6590 *skp = sk;
6591 else
6592 sk_SSL_CIPHER_free(sk);
6593 if (scsvs_out != NULL)
6594 *scsvs_out = scsvs;
6595 else
6596 sk_SSL_CIPHER_free(scsvs);
6597 return 1;
ccb8e6e0
BK		 6598 err:
6599 sk_SSL_CIPHER_free(sk);
90134d98
BK		 6600 sk_SSL_CIPHER_free(scsvs);
6601 return 0;
ccb8e6e0 6602}
3fc8d856
MC		 6603
6604int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6605{
6606 ctx->max_early_data = max_early_data;
6607
6608 return 1;
6609}
6610
46dcb945 6611uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 6612{
6613 return ctx->max_early_data;
6614}
6615
6616int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6617{
38b051a1
TM		 6618 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6619
6620 if (sc == NULL)
6621 return 0;
6622
6623 sc->max_early_data = max_early_data;
3fc8d856
MC		 6624
6625 return 1;
6626}
6627
a8e75d56 6628uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856 6629{
38b051a1
TM		 6630 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6631
6632 if (sc == NULL)
6633 return 0;
6634
6635 return sc->max_early_data;
3fc8d856 6636}
ae3947de 6637
4e8548e8
MC		 6638int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6639{
6640 ctx->recv_max_early_data = recv_max_early_data;
6641
6642 return 1;
6643}
6644
6645uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6646{
6647 return ctx->recv_max_early_data;
6648}
6649
6650int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6651{
38b051a1
TM		 6652 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6653
6654 if (sc == NULL)
6655 return 0;
6656
6657 sc->recv_max_early_data = recv_max_early_data;
4e8548e8
MC		 6658
6659 return 1;
6660}
6661
6662uint32_t SSL_get_recv_max_early_data(const SSL *s)
6663{
38b051a1
TM		 6664 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6665
6666 if (sc == NULL)
6667 return 0;
6668
6669 return sc->recv_max_early_data;
4e8548e8
MC		 6670}
6671
38b051a1 6672__owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
cf72c757
F		 6673{
6674 /* Return any active Max Fragment Len extension */
38b051a1
TM		 6675 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6676 return GET_MAX_FRAGMENT_LENGTH(sc->session);
cf72c757
F		 6677
6678 /* return current SSL connection setting */
38b051a1 6679 return sc->max_send_fragment;
cf72c757
F		 6680}
6681
38b051a1 6682__owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
cf72c757
F		 6683{
6684 /* Return a value regarding an active Max Fragment Len extension */
38b051a1
TM		 6685 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6686 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6687 return GET_MAX_FRAGMENT_LENGTH(sc->session);
cf72c757
F		 6688
6689 /* else limit |split_send_fragment| to current |max_send_fragment| */
38b051a1
TM		 6690 if (sc->split_send_fragment > sc->max_send_fragment)
6691 return sc->max_send_fragment;
cf72c757
F		 6692
6693 /* return current SSL connection setting */
38b051a1 6694 return sc->split_send_fragment;
cf72c757 6695}
042c5753
MC		 6696
6697int SSL_stateless(SSL *s)
6698{
6699 int ret;
38b051a1
TM		 6700 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6701
6702 /* TODO(QUIC): This will need further work. */
6703 if (sc == NULL)
6704 return 0;
042c5753
MC		 6705
6706 /* Ensure there is no state left over from a previous invocation */
6707 if (!SSL_clear(s))
d6bb50a5 6708 return 0;
042c5753
MC		 6709
6710 ERR_clear_error();
6711
38b051a1 6712 sc->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 6713 ret = SSL_accept(s);
38b051a1 6714 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 6715
38b051a1 6716 if (ret > 0 && sc->ext.cookieok)
c36001c3
MC		 6717 return 1;
6718
38b051a1 6719 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
e440f513
MC		 6720 return 0;
6721
6722 return -1;
042c5753 6723}
9d75dce3 6724
e97be718
MC		 6725void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6726{
6727 ctx->pha_enabled = val;
6728}
6729
32097b33 6730void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 6731{
38b051a1
TM		 6732 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6733
6734 if (sc == NULL)
6735 return;
6736
6737 sc->pha_enabled = val;
9d75dce3
TS		 6738}
6739
6740int SSL_verify_client_post_handshake(SSL *ssl)
6741{
38b051a1
TM		 6742 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6743
6744 if (sc == NULL)
6745 return 0;
6746
6747 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6849b73c 6748 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
9d75dce3
TS		 6749 return 0;
6750 }
38b051a1 6751 if (!sc->server) {
6849b73c 6752 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
9d75dce3
TS		 6753 return 0;
6754 }
6755
6756 if (!SSL_is_init_finished(ssl)) {
6849b73c 6757 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
9d75dce3
TS		 6758 return 0;
6759 }
6760
38b051a1 6761 switch (sc->post_handshake_auth) {
9d75dce3 6762 case SSL_PHA_NONE:
6849b73c 6763 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
9d75dce3
TS		 6764 return 0;
6765 default:
6766 case SSL_PHA_EXT_SENT:
6849b73c 6767 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
9d75dce3
TS		 6768 return 0;
6769 case SSL_PHA_EXT_RECEIVED:
6770 break;
6771 case SSL_PHA_REQUEST_PENDING:
6849b73c 6772 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
9d75dce3
TS		 6773 return 0;
6774 case SSL_PHA_REQUESTED:
6849b73c 6775 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
9d75dce3
TS		 6776 return 0;
6777 }
6778
38b051a1 6779 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
9d75dce3
TS		 6780
6781 /* checks verify_mode and algorithm_auth */
38b051a1
TM		 6782 if (!send_certificate_request(sc)) {
6783 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6849b73c 6784 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
9d75dce3
TS		 6785 return 0;
6786 }
6787
38b051a1 6788 ossl_statem_set_in_init(sc, 1);
9d75dce3
TS		 6789 return 1;
6790}
df0fed9a
TS		 6791
6792int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6793 SSL_CTX_generate_session_ticket_fn gen_cb,
6794 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6795 void *arg)
6796{
6797 ctx->generate_ticket_cb = gen_cb;
6798 ctx->decrypt_ticket_cb = dec_cb;
6799 ctx->ticket_cb_data = arg;
6800 return 1;
6801}
c9598459
MC		 6802
6803void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6804 SSL_allow_early_data_cb_fn cb,
6805 void *arg)
6806{
6807 ctx->allow_early_data_cb = cb;
6808 ctx->allow_early_data_cb_data = arg;
6809}
6810
6811void SSL_set_allow_early_data_cb(SSL *s,
6812 SSL_allow_early_data_cb_fn cb,
6813 void *arg)
6814{
38b051a1
TM		 6815 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6816
6817 if (sc == NULL)
6818 return;
6819
6820 sc->allow_early_data_cb = cb;
6821 sc->allow_early_data_cb_data = arg;
c9598459 6822}
c8f6c28a 6823
b4250010 6824const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 6825 int nid,
6826 const char *properties)
6827{
301fcb28 6828 const EVP_CIPHER *ciph;
5fcb97c6 6829
301fcb28
MC		 6830 ciph = tls_get_cipher_from_engine(nid);
6831 if (ciph != NULL)
6832 return ciph;
0618b62c 6833
c8f6c28a 6834 /*
301fcb28
MC		 6835 * If there is no engine cipher then we do an explicit fetch. This may fail
6836 * and that could be ok
c8f6c28a 6837 */
5fcb97c6
MC		 6838 ERR_set_mark();
6839 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6840 ERR_pop_to_mark();
6841 return ciph;
c8f6c28a
MC		 6842}
6843
6844
6845int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6846{
6847 /* Don't up-ref an implicit EVP_CIPHER */
ed576acd 6848 if (EVP_CIPHER_get0_provider(cipher) == NULL)
c8f6c28a
MC		 6849 return 1;
6850
6851 /*
6852 * The cipher was explicitly fetched and therefore it is safe to cast
6853 * away the const
6854 */
6855 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6856}
6857
6858void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6859{
6860 if (cipher == NULL)
6861 return;
6862
ed576acd 6863 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
c8f6c28a
MC		 6864 /*
6865 * The cipher was explicitly fetched and therefore it is safe to cast
6866 * away the const
6867 */
6868 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6869 }
6870}
6871
b4250010 6872const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 6873 int nid,
6874 const char *properties)
6875{
301fcb28 6876 const EVP_MD *md;
5fcb97c6 6877
301fcb28
MC		 6878 md = tls_get_digest_from_engine(nid);
6879 if (md != NULL)
6880 return md;
c8f6c28a
MC		 6881
6882 /* Otherwise we do an explicit fetch */
5fcb97c6
MC		 6883 ERR_set_mark();
6884 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6885 ERR_pop_to_mark();
6886 return md;
c8f6c28a
MC		 6887}
6888
6889int ssl_evp_md_up_ref(const EVP_MD *md)
6890{
6891 /* Don't up-ref an implicit EVP_MD */
ed576acd 6892 if (EVP_MD_get0_provider(md) == NULL)
c8f6c28a
MC		 6893 return 1;
6894
6895 /*
6896 * The digest was explicitly fetched and therefore it is safe to cast
6897 * away the const
6898 */
6899 return EVP_MD_up_ref((EVP_MD *)md);
6900}
6901
6902void ssl_evp_md_free(const EVP_MD *md)
6903{
6904 if (md == NULL)
6905 return;
6906
ed576acd 6907 if (EVP_MD_get0_provider(md) != NULL) {
c8f6c28a
MC		 6908 /*
6909 * The digest was explicitly fetched and therefore it is safe to cast
6910 * away the const
6911 */
6912 EVP_MD_free((EVP_MD *)md);
6913 }
6914}
163f6dc1
MC		 6915
6916int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6917{
38b051a1
TM		 6918 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6919
6920 if (sc == NULL)
6921 return 0;
6922
6923 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
ed576acd 6924 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 6925 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 6926 return 0;
6927 }
38b051a1
TM		 6928 EVP_PKEY_free(sc->cert->dh_tmp);
6929 sc->cert->dh_tmp = dhpkey;
163f6dc1
MC		 6930 return 1;
6931}
6932
6933int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6934{
6935 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
ed576acd 6936 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 6937 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 6938 return 0;
6939 }
6940 EVP_PKEY_free(ctx->cert->dh_tmp);
6941 ctx->cert->dh_tmp = dhpkey;
6942 return 1;
6943}
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