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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
TM		 29static int ssl_undefined_function_1(SSL_CONNECTION *sc, SSL3_RECORD *r, size_t s,
30 int t, SSL_MAC_BUF *mac, size_t macsize)
fce78bd4 31{
38b051a1 32 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 33}
34
38b051a1
TM		 35static int ssl_undefined_function_2(SSL_CONNECTION *sc, SSL3_RECORD *r,
36 unsigned char *s, int t)
fce78bd4 37{
38b051a1 38 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 39}
40
38b051a1 41static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
fce78bd4
BE		 42 unsigned char *s, size_t t, size_t *u)
43{
38b051a1 44 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 45}
46
38b051a1 47static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
fce78bd4 48{
38b051a1 49 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 50}
51
38b051a1
TM		 52static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
53 size_t s, unsigned char *t)
fce78bd4 54{
38b051a1 55 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 56}
57
58static int ssl_undefined_function_6(int r)
59{
fce78bd4
BE		 60 return ssl_undefined_function(NULL);
61}
62
38b051a1
TM		 63static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
64 size_t s, const char *t, size_t u,
fce78bd4
BE		 65 const unsigned char *v, size_t w, int x)
66{
38b051a1
TM		 67 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
68}
69
70static int ssl_undefined_function_8(SSL_CONNECTION *sc)
71{
72 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
fce78bd4
BE		 73}
74
0f113f3e 75SSL3_ENC_METHOD ssl3_undef_enc_method = {
fce78bd4
BE		 76 ssl_undefined_function_1,
77 ssl_undefined_function_2,
38b051a1 78 ssl_undefined_function_8,
fce78bd4
BE		 79 ssl_undefined_function_3,
80 ssl_undefined_function_4,
81 ssl_undefined_function_5,
0f113f3e
MC		 82 NULL, /* client_finished_label */
83 0, /* client_finished_label_len */
84 NULL, /* server_finished_label */
85 0, /* server_finished_label_len */
fce78bd4
BE		 86 ssl_undefined_function_6,
87 ssl_undefined_function_7,
0f113f3e 88};
d02b48c6 89
07bbc92c
MC		 90struct ssl_async_args {
91 SSL *s;
92 void *buf;
348240c6 93 size_t num;
a230b26e 94 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 95 union {
eda75751 96 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 97 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 98 int (*func_other) (SSL *);
add2f5ca 99 } f;
07bbc92c
MC		 100};
101
919ba009
VD		 102static const struct {
103 uint8_t mtype;
104 uint8_t ord;
a230b26e 105 int nid;
919ba009 106} dane_mds[] = {
a230b26e
EK		 107 {
108 DANETLS_MATCHING_FULL, 0, NID_undef
109 },
110 {
111 DANETLS_MATCHING_2256, 1, NID_sha256
112 },
113 {
114 DANETLS_MATCHING_2512, 2, NID_sha512
115 },
919ba009
VD		 116};
117
118static int dane_ctx_enable(struct dane_ctx_st *dctx)
119{
120 const EVP_MD **mdevp;
121 uint8_t *mdord;
122 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 123 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 124 size_t i;
125
5ae4ceb9
VD		 126 if (dctx->mdevp != NULL)
127 return 1;
128
919ba009
VD		 129 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
130 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
131
132 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 133 OPENSSL_free(mdord);
919ba009 134 OPENSSL_free(mdevp);
6849b73c 135 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 136 return 0;
137 }
138
139 /* Install default entries */
140 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
141 const EVP_MD *md;
142
143 if (dane_mds[i].nid == NID_undef ||
144 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
145 continue;
146 mdevp[dane_mds[i].mtype] = md;
147 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
148 }
149
150 dctx->mdevp = mdevp;
151 dctx->mdord = mdord;
152 dctx->mdmax = mdmax;
153
154 return 1;
155}
156
157static void dane_ctx_final(struct dane_ctx_st *dctx)
158{
159 OPENSSL_free(dctx->mdevp);
160 dctx->mdevp = NULL;
161
162 OPENSSL_free(dctx->mdord);
163 dctx->mdord = NULL;
164 dctx->mdmax = 0;
165}
166
167static void tlsa_free(danetls_record *t)
168{
169 if (t == NULL)
170 return;
171 OPENSSL_free(t->data);
172 EVP_PKEY_free(t->spki);
173 OPENSSL_free(t);
174}
175
b9aec69a 176static void dane_final(SSL_DANE *dane)
919ba009
VD		 177{
178 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
179 dane->trecs = NULL;
180
79b2a2f2 181 OSSL_STACK_OF_X509_free(dane->certs);
919ba009
VD		 182 dane->certs = NULL;
183
184 X509_free(dane->mcert);
185 dane->mcert = NULL;
186 dane->mtlsa = NULL;
187 dane->mdpth = -1;
188 dane->pdpth = -1;
189}
190
191/*
192 * dane_copy - Copy dane configuration, sans verification state.
193 */
38b051a1 194static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
919ba009
VD		 195{
196 int num;
197 int i;
198
199 if (!DANETLS_ENABLED(&from->dane))
200 return 1;
201
e431363f 202 num = sk_danetls_record_num(from->dane.trecs);
919ba009 203 dane_final(&to->dane);
5ae4ceb9 204 to->dane.flags = from->dane.flags;
38b051a1 205 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
7a908204 206 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 207
208 if (to->dane.trecs == NULL) {
6849b73c 209 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
9f6b22b8
VD		 210 return 0;
211 }
919ba009 212
919ba009
VD		 213 for (i = 0; i < num; ++i) {
214 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 215
38b051a1
TM		 216 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
217 t->selector, t->mtype, t->data, t->dlen) <= 0)
919ba009
VD		 218 return 0;
219 }
220 return 1;
221}
222
a230b26e
EK		 223static int dane_mtype_set(struct dane_ctx_st *dctx,
224 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 225{
226 int i;
227
228 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
6849b73c 229 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 230 return 0;
231 }
232
233 if (mtype > dctx->mdmax) {
234 const EVP_MD **mdevp;
235 uint8_t *mdord;
a230b26e 236 int n = ((int)mtype) + 1;
919ba009
VD		 237
238 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
239 if (mdevp == NULL) {
6849b73c 240 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 241 return -1;
242 }
243 dctx->mdevp = mdevp;
244
245 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
246 if (mdord == NULL) {
6849b73c 247 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 248 return -1;
249 }
250 dctx->mdord = mdord;
251
252 /* Zero-fill any gaps */
a230b26e 253 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 254 mdevp[i] = NULL;
255 mdord[i] = 0;
256 }
257
258 dctx->mdmax = mtype;
259 }
260
261 dctx->mdevp[mtype] = md;
262 /* Coerce ordinal of disabled matching types to 0 */
263 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
264
265 return 1;
266}
267
b9aec69a 268static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 269{
270 if (mtype > dane->dctx->mdmax)
271 return NULL;
272 return dane->dctx->mdevp[mtype];
273}
274
a230b26e
EK		 275static int dane_tlsa_add(SSL_DANE *dane,
276 uint8_t usage,
277 uint8_t selector,
6d4313f0 278 uint8_t mtype, const unsigned char *data, size_t dlen)
919ba009
VD		 279{
280 danetls_record *t;
281 const EVP_MD *md = NULL;
282 int ilen = (int)dlen;
283 int i;
9f6b22b8 284 int num;
919ba009
VD		 285
286 if (dane->trecs == NULL) {
6849b73c 287 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
919ba009
VD		 288 return -1;
289 }
290
291 if (ilen < 0 || dlen != (size_t)ilen) {
6849b73c 292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
919ba009
VD		 293 return 0;
294 }
295
296 if (usage > DANETLS_USAGE_LAST) {
6849b73c 297 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
919ba009
VD		 298 return 0;
299 }
300
301 if (selector > DANETLS_SELECTOR_LAST) {
6849b73c 302 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
919ba009
VD		 303 return 0;
304 }
305
306 if (mtype != DANETLS_MATCHING_FULL) {
307 md = tlsa_md_get(dane, mtype);
308 if (md == NULL) {
6849b73c 309 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
919ba009
VD		 310 return 0;
311 }
312 }
313
ed576acd 314 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
6849b73c 315 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
919ba009
VD		 316 return 0;
317 }
318 if (!data) {
6849b73c 319 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
919ba009
VD		 320 return 0;
321 }
322
323 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
6849b73c 324 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 325 return -1;
326 }
327
328 t->usage = usage;
329 t->selector = selector;
330 t->mtype = mtype;
348240c6 331 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 332 if (t->data == NULL) {
333 tlsa_free(t);
6849b73c 334 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 335 return -1;
336 }
348240c6
MC		 337 memcpy(t->data, data, dlen);
338 t->dlen = dlen;
919ba009
VD		 339
340 /* Validate and cache full certificate or public key */
341 if (mtype == DANETLS_MATCHING_FULL) {
342 const unsigned char *p = data;
343 X509 *cert = NULL;
344 EVP_PKEY *pkey = NULL;
345
346 switch (selector) {
347 case DANETLS_SELECTOR_CERT:
348240c6 348 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 349 dlen != (size_t)(p - data)) {
350 tlsa_free(t);
6849b73c 351 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
919ba009
VD		 352 return 0;
353 }
354 if (X509_get0_pubkey(cert) == NULL) {
355 tlsa_free(t);
6849b73c 356 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
919ba009
VD		 357 return 0;
358 }
359
360 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
361 X509_free(cert);
362 break;
363 }
364
365 /*
366 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
367 * records that contain full certificates of trust-anchors that are
368 * not present in the wire chain. For usage PKIX-TA(0), we augment
369 * the chain with untrusted Full(0) certificates from DNS, in case
370 * they are missing from the chain.
371 */
372 if ((dane->certs == NULL &&
373 (dane->certs = sk_X509_new_null()) == NULL) ||
374 !sk_X509_push(dane->certs, cert)) {
6849b73c 375 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 376 X509_free(cert);
377 tlsa_free(t);
378 return -1;
379 }
380 break;
381
382 case DANETLS_SELECTOR_SPKI:
348240c6 383 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 384 dlen != (size_t)(p - data)) {
385 tlsa_free(t);
6849b73c 386 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
919ba009
VD		 387 return 0;
388 }
389
390 /*
391 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
392 * records that contain full bare keys of trust-anchors that are
393 * not present in the wire chain.
394 */
395 if (usage == DANETLS_USAGE_DANE_TA)
396 t->spki = pkey;
397 else
398 EVP_PKEY_free(pkey);
399 break;
400 }
401 }
402
403 /*-
404 * Find the right insertion point for the new record.
405 *
406 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
407 * they can be processed first, as they require no chain building, and no
408 * expiration or hostname checks. Because DANE-EE(3) is numerically
409 * largest, this is accomplished via descending sort by "usage".
410 *
411 * We also sort in descending order by matching ordinal to simplify
412 * the implementation of digest agility in the verification code.
413 *
414 * The choice of order for the selector is not significant, so we
415 * use the same descending order for consistency.
416 */
9f6b22b8
VD		 417 num = sk_danetls_record_num(dane->trecs);
418 for (i = 0; i < num; ++i) {
919ba009 419 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 420
919ba009
VD		 421 if (rec->usage > usage)
422 continue;
423 if (rec->usage < usage)
424 break;
425 if (rec->selector > selector)
426 continue;
427 if (rec->selector < selector)
428 break;
429 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
430 continue;
431 break;
432 }
433
434 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
435 tlsa_free(t);
6849b73c 436 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 437 return -1;
438 }
439 dane->umask |= DANETLS_USAGE_BIT(usage);
440
441 return 1;
442}
443
c8feba72
BK		 444/*
445 * Return 0 if there is only one version configured and it was disabled
446 * at configure time. Return 1 otherwise.
447 */
448static int ssl_check_allowed_versions(int min_version, int max_version)
449{
450 int minisdtls = 0, maxisdtls = 0;
451
452 /* Figure out if we're doing DTLS versions or TLS versions */
453 if (min_version == DTLS1_BAD_VER
454 || min_version >> 8 == DTLS1_VERSION_MAJOR)
455 minisdtls = 1;
456 if (max_version == DTLS1_BAD_VER
457 || max_version >> 8 == DTLS1_VERSION_MAJOR)
458 maxisdtls = 1;
459 /* A wildcard version of 0 could be DTLS or TLS. */
460 if ((minisdtls && !maxisdtls && max_version != 0)
461 || (maxisdtls && !minisdtls && min_version != 0)) {
462 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
463 return 0;
464 }
465
466 if (minisdtls || maxisdtls) {
467 /* Do DTLS version checks. */
468 if (min_version == 0)
469 /* Ignore DTLS1_BAD_VER */
470 min_version = DTLS1_VERSION;
471 if (max_version == 0)
472 max_version = DTLS1_2_VERSION;
473#ifdef OPENSSL_NO_DTLS1_2
474 if (max_version == DTLS1_2_VERSION)
475 max_version = DTLS1_VERSION;
476#endif
477#ifdef OPENSSL_NO_DTLS1
478 if (min_version == DTLS1_VERSION)
479 min_version = DTLS1_2_VERSION;
480#endif
79b4444d
DMSP		 481 /* Done massaging versions; do the check. */
482 if (0
c8feba72
BK		 483#ifdef OPENSSL_NO_DTLS1
484 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
485 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
486#endif
487#ifdef OPENSSL_NO_DTLS1_2
488 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
489 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
490#endif
491 )
492 return 0;
493 } else {
494 /* Regular TLS version checks. */
79b4444d
DMSP		 495 if (min_version == 0)
496 min_version = SSL3_VERSION;
497 if (max_version == 0)
498 max_version = TLS1_3_VERSION;
c8feba72 499#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 500 if (max_version == TLS1_3_VERSION)
501 max_version = TLS1_2_VERSION;
c8feba72
BK		 502#endif
503#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 504 if (max_version == TLS1_2_VERSION)
505 max_version = TLS1_1_VERSION;
c8feba72
BK		 506#endif
507#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 508 if (max_version == TLS1_1_VERSION)
509 max_version = TLS1_VERSION;
c8feba72
BK		 510#endif
511#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 512 if (max_version == TLS1_VERSION)
513 max_version = SSL3_VERSION;
c8feba72
BK		 514#endif
515#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 516 if (min_version == SSL3_VERSION)
517 min_version = TLS1_VERSION;
c8feba72
BK		 518#endif
519#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 520 if (min_version == TLS1_VERSION)
521 min_version = TLS1_1_VERSION;
c8feba72
BK		 522#endif
523#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 524 if (min_version == TLS1_1_VERSION)
525 min_version = TLS1_2_VERSION;
c8feba72
BK		 526#endif
527#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 528 if (min_version == TLS1_2_VERSION)
529 min_version = TLS1_3_VERSION;
c8feba72 530#endif
79b4444d
DMSP		 531 /* Done massaging versions; do the check. */
532 if (0
c8feba72
BK		 533#ifdef OPENSSL_NO_SSL3
534 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
535#endif
536#ifdef OPENSSL_NO_TLS1
537 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
538#endif
539#ifdef OPENSSL_NO_TLS1_1
540 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
541#endif
542#ifdef OPENSSL_NO_TLS1_2
543 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
544#endif
545#ifdef OPENSSL_NO_TLS1_3
546 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
547#endif
548 )
549 return 0;
550 }
551 return 1;
552}
553
08073700
RB		 554#if defined(__TANDEM) && defined(OPENSSL_VPROC)
555/*
556 * Define a VPROC function for HP NonStop build ssl library.
557 * This is used by platform version identification tools.
558 * Do not inline this procedure or make it static.
559 */
560# define OPENSSL_VPROC_STRING_(x) x##_SSL
561# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
562# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
563void OPENSSL_VPROC_FUNC(void) {}
564#endif
565
566
38b051a1 567static void clear_ciphers(SSL_CONNECTION *s)
d31fb0b5
RS		 568{
569 /* clear the current cipher */
570 ssl_clear_cipher_ctx(s);
571 ssl_clear_hash_ctx(&s->read_hash);
572 ssl_clear_hash_ctx(&s->write_hash);
573}
574
4f43d0e7 575int SSL_clear(SSL *s)
0f113f3e 576{
0f113f3e 577 if (s->method == NULL) {
6849b73c 578 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 579 return 0;
0f113f3e 580 }
d02b48c6 581
38b051a1
TM		 582 return s->method->ssl_reset(s);
583}
584
585int ossl_ssl_connection_reset(SSL *s)
586{
587 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
588
589 if (sc == NULL)
590 return 0;
591
592 if (ssl_clear_bad_session(sc)) {
593 SSL_SESSION_free(sc->session);
594 sc->session = NULL;
0f113f3e 595 }
38b051a1
TM		 596 SSL_SESSION_free(sc->psksession);
597 sc->psksession = NULL;
598 OPENSSL_free(sc->psksession_id);
599 sc->psksession_id = NULL;
600 sc->psksession_id_len = 0;
601 sc->hello_retry_request = 0;
602 sc->sent_tickets = 0;
d62bfb39 603
38b051a1
TM		 604 sc->error = 0;
605 sc->hit = 0;
606 sc->shutdown = 0;
d02b48c6 607
38b051a1 608 if (sc->renegotiate) {
6849b73c 609 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
0f113f3e
MC		 610 return 0;
611 }
d02b48c6 612
38b051a1 613 ossl_statem_clear(sc);
413c4f45 614
38b051a1
TM		 615 /* TODO(QUIC): Version handling not yet clear */
616 sc->version = s->method->version;
617 sc->client_version = sc->version;
618 sc->rwstate = SSL_NOTHING;
d02b48c6 619
38b051a1
TM		 620 BUF_MEM_free(sc->init_buf);
621 sc->init_buf = NULL;
622 clear_ciphers(sc);
623 sc->first_packet = 0;
d02b48c6 624
38b051a1 625 sc->key_update = SSL_KEY_UPDATE_NONE;
44c04a2e 626
38b051a1
TM		 627 EVP_MD_CTX_free(sc->pha_dgst);
628 sc->pha_dgst = NULL;
88834998 629
919ba009 630 /* Reset DANE verification result state */
38b051a1
TM		 631 sc->dane.mdpth = -1;
632 sc->dane.pdpth = -1;
633 X509_free(sc->dane.mcert);
634 sc->dane.mcert = NULL;
635 sc->dane.mtlsa = NULL;
919ba009
VD		 636
637 /* Clear the verification result peername */
38b051a1 638 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
919ba009 639
29948ac8 640 /* Clear any shared connection state */
38b051a1
TM		 641 OPENSSL_free(sc->shared_sigalgs);
642 sc->shared_sigalgs = NULL;
643 sc->shared_sigalgslen = 0;
29948ac8 644
0f113f3e
MC		 645 /*
646 * Check to see if we were changed into a different method, if so, revert
24252537 647 * back.
0f113f3e 648 */
38b051a1
TM		 649 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
650 s->method->ssl_deinit(s);
651 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
652 if (!s->method->ssl_init(s))
a89325e4 653 return 0;
b77f3ed1
MC		 654 } else {
655 if (!s->method->ssl_clear(s))
656 return 0;
657 }
33d23b87 658
38b051a1 659 RECORD_LAYER_clear(&sc->rlayer);
cffafb5f
MC		 660 BIO_free(sc->rlayer.rrlnext);
661 sc->rlayer.rrlnext = NULL;
33d23b87 662
79eebb08 663 if (!ssl_set_new_record_layer(sc,
222cf410 664 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
79eebb08
MC		 665 OSSL_RECORD_DIRECTION_READ,
666 OSSL_RECORD_PROTECTION_LEVEL_NONE,
667 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
668 NID_undef, NULL, NULL)) {
7c293999 669 /* SSLfatal already called */
aedbb71b
MC		 670 return 0;
671 }
2b71b042
MC		 672 if (!ssl_set_new_record_layer(sc,
673 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
674 OSSL_RECORD_DIRECTION_WRITE,
675 OSSL_RECORD_PROTECTION_LEVEL_NONE,
676 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
677 NID_undef, NULL, NULL)) {
678 /* SSLfatal already called */
679 return 0;
680 }
aedbb71b 681
a89325e4 682 return 1;
0f113f3e 683}
d02b48c6 684
dd0164e7 685#ifndef OPENSSL_NO_DEPRECATED_3_0
4f43d0e7 686/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 687int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
688{
689 STACK_OF(SSL_CIPHER) *sk;
690
691 ctx->method = meth;
692
5d120511 693 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
6849b73c 694 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
2340ed27
BK		 695 return 0;
696 }
a68eee67 697 sk = ssl_create_cipher_list(ctx,
f865b081
MC		 698 ctx->tls13_ciphersuites,
699 &(ctx->cipher_list),
0f113f3e 700 &(ctx->cipher_list_by_id),
5d120511 701 OSSL_default_cipher_list(), ctx->cert);
0f113f3e 702 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
6849b73c 703 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 704 return 0;
0f113f3e 705 }
208fb891 706 return 1;
0f113f3e 707}
dd0164e7 708#endif
d02b48c6 709
4f43d0e7 710SSL *SSL_new(SSL_CTX *ctx)
0f113f3e 711{
0f113f3e 712 if (ctx == NULL) {
6849b73c 713 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
26a7d938 714 return NULL;
0f113f3e
MC		 715 }
716 if (ctx->method == NULL) {
6849b73c 717 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 718 return NULL;
0f113f3e 719 }
38b051a1
TM		 720 return ctx->method->ssl_new(ctx);
721}
722
723int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
724{
725 ssl->type = type;
726
727 ssl->references = 1;
728 ssl->lock = CRYPTO_THREAD_lock_new();
729 if (ssl->lock == NULL)
730 return 0;
731
732 SSL_CTX_up_ref(ctx);
733 ssl->ctx = ctx;
734
735 ssl->method = ctx->method;
736
737 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
738 return 0;
739
740 return 1;
741}
742
743SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
744{
745 SSL_CONNECTION *s;
746 SSL *ssl;
0f113f3e 747
b51bce94 748 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e 749 if (s == NULL)
38b051a1 750 return NULL;
0f113f3e 751
38b051a1
TM		 752 ssl = &s->ssl;
753 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
e6b10c34
BE		 754 OPENSSL_free(s);
755 s = NULL;
ae3947de 756 goto err;
e6b10c34 757 }
ae3947de 758
38b051a1
TM		 759#ifndef OPENSSL_NO_QUIC
760 /* set the parent (user visible) ssl to self */
761 s->user_ssl = ssl;
762#endif
763
c036e210 764 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 765
0f113f3e 766 s->options = ctx->options;
5ae4ceb9 767 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 768 s->min_proto_version = ctx->min_proto_version;
769 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 770 s->mode = ctx->mode;
771 s->max_cert_list = ctx->max_cert_list;
3fc8d856 772 s->max_early_data = ctx->max_early_data;
4e8548e8 773 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 774 s->num_tickets = ctx->num_tickets;
e97be718 775 s->pha_enabled = ctx->pha_enabled;
0f113f3e 776
f865b081
MC		 777 /* Shallow copy of the ciphersuites stack */
778 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
779 if (s->tls13_ciphersuites == NULL)
780 goto err;
781
2c382349
KR		 782 /*
783 * Earlier library versions used to copy the pointer to the CERT, not
784 * its contents; only when setting new parameters for the per-SSL
785 * copy, ssl_cert_new would be called (and the direct reference to
786 * the per-SSL_CTX settings would be lost, but those still were
787 * indirectly accessed for various purposes, and for that reason they
788 * used to be known as s->ctx->default_cert). Now we don't look at the
789 * SSL_CTX's CERT after having duplicated it once.
790 */
791 s->cert = ssl_cert_dup(ctx->cert);
792 if (s->cert == NULL)
793 goto err;
0f113f3e 794
52e1d7b1 795 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 796 s->msg_callback = ctx->msg_callback;
797 s->msg_callback_arg = ctx->msg_callback_arg;
798 s->verify_mode = ctx->verify_mode;
799 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
eb7d6c2a
MC		 800 s->rlayer.record_padding_cb = ctx->record_padding_cb;
801 s->rlayer.record_padding_arg = ctx->record_padding_arg;
802 s->rlayer.block_padding = ctx->block_padding;
0f113f3e 803 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 804 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 805 goto err;
0f113f3e
MC		 806 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
807 s->verify_callback = ctx->default_verify_callback;
808 s->generate_session_id = ctx->generate_session_id;
809
810 s->param = X509_VERIFY_PARAM_new();
a71edf3b 811 if (s->param == NULL)
0f113f3e
MC		 812 goto err;
813 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 814 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 815
816 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 817 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 818 s->split_send_fragment = ctx->split_send_fragment;
819 s->max_pipelines = ctx->max_pipelines;
cffafb5f 820 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
bf21446a 821
aff8c126
RS		 822 s->ext.debug_cb = 0;
823 s->ext.debug_arg = NULL;
824 s->ext.ticket_expected = 0;
825 s->ext.status_type = ctx->ext.status_type;
826 s->ext.status_expected = 0;
827 s->ext.ocsp.ids = NULL;
828 s->ext.ocsp.exts = NULL;
829 s->ext.ocsp.resp = NULL;
830 s->ext.ocsp.resp_len = 0;
16203f7b 831 SSL_CTX_up_ref(ctx);
222da979 832 s->session_ctx = ctx;
aff8c126
RS		 833 if (ctx->ext.ecpointformats) {
834 s->ext.ecpointformats =
835 OPENSSL_memdup(ctx->ext.ecpointformats,
836 ctx->ext.ecpointformats_len);
39a14059
MC		 837 if (!s->ext.ecpointformats) {
838 s->ext.ecpointformats_len = 0;
0f113f3e 839 goto err;
39a14059 840 }
aff8c126
RS		 841 s->ext.ecpointformats_len =
842 ctx->ext.ecpointformats_len;
843 }
844 if (ctx->ext.supportedgroups) {
845 s->ext.supportedgroups =
846 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 847 ctx->ext.supportedgroups_len
b92d7b62 848 * sizeof(*ctx->ext.supportedgroups));
39a14059
MC		 849 if (!s->ext.supportedgroups) {
850 s->ext.supportedgroups_len = 0;
0f113f3e 851 goto err;
39a14059 852 }
aff8c126 853 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 854 }
dbc6268f 855
a230b26e 856#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 857 s->ext.npn = NULL;
a230b26e 858#endif
6f017a8f 859
38b051a1
TM		 860 if (ctx->ext.alpn != NULL) {
861 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
39a14059
MC		 862 if (s->ext.alpn == NULL) {
863 s->ext.alpn_len = 0;
0f113f3e 864 goto err;
39a14059 865 }
38b051a1
TM		 866 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
867 s->ext.alpn_len = ctx->ext.alpn_len;
0f113f3e 868 }
d02b48c6 869
696178ed 870 s->verified_chain = NULL;
0f113f3e 871 s->verify_result = X509_V_OK;
d02b48c6 872
a974e64a
MC		 873 s->default_passwd_callback = ctx->default_passwd_callback;
874 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
875
44c04a2e
MC		 876 s->key_update = SSL_KEY_UPDATE_NONE;
877
c9598459
MC		 878 s->allow_early_data_cb = ctx->allow_early_data_cb;
879 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
880
38b051a1 881 if (!ssl->method->ssl_init(ssl))
0f113f3e 882 goto err;
d02b48c6 883
0f113f3e 884 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 885
38b051a1 886 if (!SSL_clear(ssl))
25a807bc 887 goto err;
58964a49 888
ddac1974 889#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 890 s->psk_client_callback = ctx->psk_client_callback;
891 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 892#endif
f46184bd
MC		 893 s->psk_find_session_cb = ctx->psk_find_session_cb;
894 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 895
9f5a87fd
PY		 896 s->async_cb = ctx->async_cb;
897 s->async_cb_arg = ctx->async_cb_arg;
898
07bbc92c
MC		 899 s->job = NULL;
900
ed29e82a 901#ifndef OPENSSL_NO_CT
38b051a1 902 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
a230b26e 903 ctx->ct_validation_callback_arg))
ed29e82a
RP		 904 goto err;
905#endif
906
38b051a1 907 return ssl;
0f113f3e 908 err:
38b051a1 909 SSL_free(ssl);
6849b73c 910 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
16203f7b 911 return NULL;
0f113f3e 912}
d02b48c6 913
e417070c
RS		 914int SSL_is_dtls(const SSL *s)
915{
38b051a1
TM		 916 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
917
918 if (sc == NULL)
919 return 0;
920
921 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
e417070c
RS		 922}
923
c5ebfcab 924int SSL_up_ref(SSL *s)
a18a31e4 925{
16203f7b 926 int i;
c5ebfcab 927
2f545ae4 928 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 929 return 0;
930
931 REF_PRINT_COUNT("SSL", s);
932 REF_ASSERT_ISNT(i < 2);
933 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 934}
935
0f113f3e
MC		 936int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
937 unsigned int sid_ctx_len)
938{
fe9edc9d 939 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 940 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 941 return 0;
942 }
943 ctx->sid_ctx_length = sid_ctx_len;
944 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 945
946 return 1;
0f113f3e 947}
4eb77b26 948
0f113f3e
MC		 949int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
950 unsigned int sid_ctx_len)
951{
38b051a1
TM		 952 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
953
954 if (sc == NULL)
955 return 0;
956
0f113f3e 957 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
6849b73c 958 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
0f113f3e
MC		 959 return 0;
960 }
38b051a1
TM		 961 sc->sid_ctx_length = sid_ctx_len;
962 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 963
964 return 1;
0f113f3e 965}
b4cadc6e 966
dc644fe2 967int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 968{
cd3f8c1b
RS		 969 if (!CRYPTO_THREAD_write_lock(ctx->lock))
970 return 0;
0f113f3e 971 ctx->generate_session_id = cb;
16203f7b 972 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 973 return 1;
974}
dc644fe2
GT		 975
976int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 977{
38b051a1
TM		 978 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
979
980 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
cd3f8c1b 981 return 0;
38b051a1 982 sc->generate_session_id = cb;
16203f7b 983 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 984 return 1;
985}
dc644fe2 986
f85c9904 987int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 988 unsigned int id_len)
989{
990 /*
991 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 992 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 993 * find if there's a session in the hash table that would conflict with
994 * any new session built out of this id/id_len and the ssl_version in use
995 * by this SSL.
996 */
997 SSL_SESSION r, *p;
38b051a1 998 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
0f113f3e 999
38b051a1 1000 if (sc == NULL || id_len > sizeof(r.session_id))
0f113f3e
MC		 1001 return 0;
1002
38b051a1 1003 r.ssl_version = sc->version;
0f113f3e
MC		 1004 r.session_id_length = id_len;
1005 memcpy(r.session_id, id, id_len);
1006
38b051a1 1007 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
cd3f8c1b 1008 return 0;
38b051a1
TM		 1009 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1010 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
0f113f3e
MC		 1011 return (p != NULL);
1012}
dc644fe2 1013
bb7cd4e3 1014int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 1015{
1016 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1017}
bb7cd4e3
DSH		 1018
1019int SSL_set_purpose(SSL *s, int purpose)
0f113f3e 1020{
38b051a1
TM		 1021 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1022
1023 if (sc == NULL)
1024 return 0;
1025
1026 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
0f113f3e 1027}
926a56bf 1028
bb7cd4e3 1029int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 1030{
1031 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1032}
bb7cd4e3
DSH		 1033
1034int SSL_set_trust(SSL *s, int trust)
0f113f3e 1035{
38b051a1
TM		 1036 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1037
1038 if (sc == NULL)
1039 return 0;
1040
1041 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
0f113f3e 1042}
bb7cd4e3 1043
919ba009
VD		 1044int SSL_set1_host(SSL *s, const char *hostname)
1045{
38b051a1
TM		 1046 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1047
1048 if (sc == NULL)
1049 return 0;
1050
c832840e
DW		 1051 /* If a hostname is provided and parses as an IP address,
1052 * treat it as such. */
38b051a1
TM		 1053 if (hostname != NULL
1054 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
c832840e
DW		 1055 return 1;
1056
38b051a1 1057 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
919ba009
VD		 1058}
1059
1060int SSL_add1_host(SSL *s, const char *hostname)
1061{
38b051a1
TM		 1062 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1063
1064 if (sc == NULL)
1065 return 0;
1066
c832840e
DW		 1067 /* If a hostname is provided and parses as an IP address,
1068 * treat it as such. */
892a9e4c
DW		 1069 if (hostname)
1070 {
1071 ASN1_OCTET_STRING *ip;
1072 char *old_ip;
1073
1074 ip = a2i_IPADDRESS(hostname);
1075 if (ip) {
1076 /* We didn't want it; only to check if it *is* an IP address */
1077 ASN1_OCTET_STRING_free(ip);
1078
38b051a1 1079 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
892a9e4c
DW		 1080 if (old_ip)
1081 {
f2bfc53b 1082 OPENSSL_free(old_ip);
892a9e4c
DW		 1083 /* There can be only one IP address */
1084 return 0;
1085 }
1086
38b051a1 1087 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
892a9e4c
DW		 1088 }
1089 }
c832840e 1090
38b051a1 1091 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
919ba009
VD		 1092}
1093
1094void SSL_set_hostflags(SSL *s, unsigned int flags)
1095{
38b051a1
TM		 1096 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1097
1098 if (sc == NULL)
1099 return;
1100
1101 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
919ba009
VD		 1102}
1103
4588cb44 1104const char *SSL_get0_peername(SSL *s)
919ba009 1105{
38b051a1
TM		 1106 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1107
1108 if (sc == NULL)
1109 return NULL;
1110
1111 return X509_VERIFY_PARAM_get0_peername(sc->param);
919ba009
VD		 1112}
1113
1114int SSL_CTX_dane_enable(SSL_CTX *ctx)
1115{
1116 return dane_ctx_enable(&ctx->dane);
1117}
1118
5ae4ceb9
VD		 1119unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1120{
1121 unsigned long orig = ctx->dane.flags;
1122
1123 ctx->dane.flags |= flags;
1124 return orig;
1125}
1126
1127unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1128{
1129 unsigned long orig = ctx->dane.flags;
1130
1131 ctx->dane.flags &= ~flags;
1132 return orig;
1133}
1134
919ba009
VD		 1135int SSL_dane_enable(SSL *s, const char *basedomain)
1136{
38b051a1
TM		 1137 SSL_DANE *dane;
1138 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919ba009 1139
38b051a1
TM		 1140 if (sc == NULL)
1141 return 0;
1142
1143 dane = &sc->dane;
919ba009 1144 if (s->ctx->dane.mdmax == 0) {
6849b73c 1145 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
919ba009
VD		 1146 return 0;
1147 }
1148 if (dane->trecs != NULL) {
6849b73c 1149 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
919ba009
VD		 1150 return 0;
1151 }
1152
8d887efa
VD		 1153 /*
1154 * Default SNI name. This rejects empty names, while set1_host below
1155 * accepts them and disables host name checks. To avoid side-effects with
1156 * invalid input, set the SNI name first.
1157 */
38b051a1 1158 if (sc->ext.hostname == NULL) {
dccd20d1 1159 if (!SSL_set_tlsext_host_name(s, basedomain)) {
6849b73c 1160 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1161 return -1;
8d887efa
VD		 1162 }
1163 }
1164
919ba009 1165 /* Primary RFC6125 reference identifier */
38b051a1 1166 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
6849b73c 1167 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
919ba009
VD		 1168 return -1;
1169 }
1170
919ba009
VD		 1171 dane->mdpth = -1;
1172 dane->pdpth = -1;
1173 dane->dctx = &s->ctx->dane;
1174 dane->trecs = sk_danetls_record_new_null();
1175
1176 if (dane->trecs == NULL) {
6849b73c 1177 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
919ba009
VD		 1178 return -1;
1179 }
1180 return 1;
1181}
1182
5ae4ceb9
VD		 1183unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1184{
38b051a1
TM		 1185 unsigned long orig;
1186 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1187
1188 if (sc == NULL)
1189 return 0;
1190
1191 orig = sc->dane.flags;
5ae4ceb9 1192
38b051a1 1193 sc->dane.flags |= flags;
5ae4ceb9
VD		 1194 return orig;
1195}
1196
1197unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1198{
38b051a1
TM		 1199 unsigned long orig;
1200 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5ae4ceb9 1201
38b051a1
TM		 1202 if (sc == NULL)
1203 return 0;
1204
1205 orig = sc->dane.flags;
1206
1207 sc->dane.flags &= ~flags;
5ae4ceb9
VD		 1208 return orig;
1209}
1210
919ba009
VD		 1211int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1212{
38b051a1
TM		 1213 SSL_DANE *dane;
1214 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919ba009 1215
38b051a1
TM		 1216 if (sc == NULL)
1217 return -1;
1218
1219 dane = &sc->dane;
1220
1221 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
919ba009
VD		 1222 return -1;
1223 if (dane->mtlsa) {
1224 if (mcert)
1225 *mcert = dane->mcert;
1226 if (mspki)
1227 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1228 }
1229 return dane->mdpth;
1230}
1231
1232int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
6d4313f0 1233 uint8_t *mtype, const unsigned char **data, size_t *dlen)
919ba009 1234{
38b051a1
TM		 1235 SSL_DANE *dane;
1236 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919ba009 1237
38b051a1
TM		 1238 if (sc == NULL)
1239 return -1;
1240
1241 dane = &sc->dane;
1242
1243 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
919ba009
VD		 1244 return -1;
1245 if (dane->mtlsa) {
1246 if (usage)
1247 *usage = dane->mtlsa->usage;
1248 if (selector)
1249 *selector = dane->mtlsa->selector;
1250 if (mtype)
1251 *mtype = dane->mtlsa->mtype;
1252 if (data)
1253 *data = dane->mtlsa->data;
1254 if (dlen)
1255 *dlen = dane->mtlsa->dlen;
1256 }
1257 return dane->mdpth;
1258}
1259
b9aec69a 1260SSL_DANE *SSL_get0_dane(SSL *s)
919ba009 1261{
38b051a1
TM		 1262 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1263
1264 if (sc == NULL)
1265 return NULL;
1266
1267 return &sc->dane;
919ba009
VD		 1268}
1269
1270int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
6d4313f0 1271 uint8_t mtype, const unsigned char *data, size_t dlen)
919ba009 1272{
38b051a1
TM		 1273 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1274
1275 if (sc == NULL)
1276 return 0;
1277
1278 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
919ba009
VD		 1279}
1280
a230b26e
EK		 1281int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1282 uint8_t ord)
919ba009
VD		 1283{
1284 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1285}
1286
ccf11751 1287int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1288{
1289 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1290}
ccf11751
DSH		 1291
1292int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e 1293{
38b051a1
TM		 1294 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1295
1296 if (sc == NULL)
1297 return 0;
1298
1299 return X509_VERIFY_PARAM_set1(sc->param, vpm);
0f113f3e 1300}
ccf11751 1301
7af31968 1302X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1303{
1304 return ctx->param;
1305}
7af31968
DSH		 1306
1307X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e 1308{
38b051a1
TM		 1309 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1310
1311 if (sc == NULL)
1312 return NULL;
1313
1314 return sc->param;
0f113f3e 1315}
7af31968 1316
a5ee80b9 1317void SSL_certs_clear(SSL *s)
0f113f3e 1318{
38b051a1
TM		 1319 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1320
1321 if (sc == NULL)
1322 return;
1323
1324 ssl_cert_clear_certs(sc->cert);
0f113f3e 1325}
a5ee80b9 1326
4f43d0e7 1327void SSL_free(SSL *s)
0f113f3e
MC		 1328{
1329 int i;
58964a49 1330
e6e9170d
RS		 1331 if (s == NULL)
1332 return;
2f545ae4 1333 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1334 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1335 if (i > 0)
1336 return;
f3f1cf84 1337 REF_ASSERT_ISNT(i < 0);
d02b48c6 1338
38b051a1
TM		 1339 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1340
1341 if (s->method != NULL)
1342 s->method->ssl_free(s);
1343
1344 SSL_CTX_free(s->ctx);
1345 CRYPTO_THREAD_lock_free(s->lock);
1346
1347 OPENSSL_free(s);
1348}
1349
1350void ossl_ssl_connection_free(SSL *ssl)
1351{
1352 SSL_CONNECTION *s;
1353
1354 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1355 if (s == NULL)
1356 return;
1357
222561fe 1358 X509_VERIFY_PARAM_free(s->param);
919ba009 1359 dane_final(&s->dane);
0f113f3e 1360
b77f3ed1 1361 /* Ignore return value */
2e7dc7cd
MC		 1362 ssl_free_wbio_buffer(s);
1363
65e2d672 1364 BIO_free_all(s->wbio);
50ec7505 1365 s->wbio = NULL;
325cfa85 1366 BIO_free_all(s->rbio);
50ec7505 1367 s->rbio = NULL;
0f113f3e 1368
b5cf81f7
MC		 1369 RECORD_LAYER_clear(&s->rlayer);
1370
25aaa98a 1371 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1372
1373 /* add extra stuff */
25aaa98a
RS		 1374 sk_SSL_CIPHER_free(s->cipher_list);
1375 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1376 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
eee2a6a7 1377 sk_SSL_CIPHER_free(s->peer_ciphers);
0f113f3e
MC		 1378
1379 /* Make the next call work :-) */
1380 if (s->session != NULL) {
1381 ssl_clear_bad_session(s);
1382 SSL_SESSION_free(s->session);
1383 }
9368f865 1384 SSL_SESSION_free(s->psksession);
add8d0e9 1385 OPENSSL_free(s->psksession_id);
0f113f3e 1386
d31fb0b5 1387 clear_ciphers(s);
d02b48c6 1388
e0e920b1 1389 ssl_cert_free(s->cert);
29948ac8 1390 OPENSSL_free(s->shared_sigalgs);
0f113f3e 1391 /* Free up if allocated */
d02b48c6 1392
aff8c126 1393 OPENSSL_free(s->ext.hostname);
222da979 1394 SSL_CTX_free(s->session_ctx);
aff8c126 1395 OPENSSL_free(s->ext.ecpointformats);
cd0fb43c 1396 OPENSSL_free(s->ext.peer_ecpointformats);
aff8c126 1397 OPENSSL_free(s->ext.supportedgroups);
45436e61 1398 OPENSSL_free(s->ext.peer_supportedgroups);
aff8c126 1399 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1400#ifndef OPENSSL_NO_OCSP
aff8c126 1401 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1402#endif
ed29e82a
RP		 1403#ifndef OPENSSL_NO_CT
1404 SCT_LIST_free(s->scts);
aff8c126 1405 OPENSSL_free(s->ext.scts);
ed29e82a 1406#endif
aff8c126
RS		 1407 OPENSSL_free(s->ext.ocsp.resp);
1408 OPENSSL_free(s->ext.alpn);
cfef5027 1409 OPENSSL_free(s->ext.tls13_cookie);
94941cad
MK		 1410 if (s->clienthello != NULL)
1411 OPENSSL_free(s->clienthello->pre_proc_exts);
6b1bb98f 1412 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1413 OPENSSL_free(s->pha_context);
1414 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1415
fa7c2637 1416 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1417 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1418
79b2a2f2 1419 OSSL_STACK_OF_X509_free(s->verified_chain);
696178ed 1420
38b051a1
TM		 1421 if (ssl->method != NULL)
1422 ssl->method->ssl_deinit(ssl);
7c3908dd 1423
ff75a257
MC		 1424 ASYNC_WAIT_CTX_free(s->waitctx);
1425
e481f9b9 1426#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1427 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1428#endif
1429
e783bae2 1430#ifndef OPENSSL_NO_SRTP
25aaa98a 1431 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e 1432#endif
0f113f3e
MC		 1433}
1434
65e2d672 1435void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1436{
38b051a1
TM		 1437 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1438
1439 if (sc == NULL)
1440 return;
1441
1442 BIO_free_all(sc->rbio);
1443 sc->rbio = rbio;
cffafb5f 1444 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
3ffbe008
MC		 1445}
1446
65e2d672 1447void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e 1448{
38b051a1
TM		 1449 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1450
1451 if (sc == NULL)
1452 return;
1453
0f113f3e
MC		 1454 /*
1455 * If the output buffering BIO is still in place, remove it
1456 */
38b051a1
TM		 1457 if (sc->bbio != NULL)
1458 sc->wbio = BIO_pop(sc->wbio);
2e7dc7cd 1459
38b051a1
TM		 1460 BIO_free_all(sc->wbio);
1461 sc->wbio = wbio;
2e7dc7cd
MC		 1462
1463 /* Re-attach |bbio| to the new |wbio|. */
38b051a1
TM		 1464 if (sc->bbio != NULL)
1465 sc->wbio = BIO_push(sc->bbio, sc->wbio);
b5cf81f7
MC		 1466
1467 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
0f113f3e 1468}
d02b48c6 1469
3ffbe008
MC		 1470void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1471{
65e2d672
MC		 1472 /*
1473 * For historical reasons, this function has many different cases in
1474 * ownership handling.
1475 */
1476
1477 /* If nothing has changed, do nothing */
1478 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1479 return;
1480
1481 /*
1482 * If the two arguments are equal then one fewer reference is granted by the
1483 * caller than we want to take
1484 */
1485 if (rbio != NULL && rbio == wbio)
1486 BIO_up_ref(rbio);
1487
1488 /*
1489 * If only the wbio is changed only adopt one reference.
1490 */
1491 if (rbio == SSL_get_rbio(s)) {
1492 SSL_set0_wbio(s, wbio);
1493 return;
1494 }
1495 /*
1496 * There is an asymmetry here for historical reasons. If only the rbio is
1497 * changed AND the rbio and wbio were originally different, then we only
1498 * adopt one reference.
1499 */
1500 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1501 SSL_set0_rbio(s, rbio);
1502 return;
1503 }
1504
1505 /* Otherwise, adopt both references. */
1506 SSL_set0_rbio(s, rbio);
1507 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1508}
1509
0821bcd4 1510BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1511{
38b051a1
TM		 1512 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1513
1514 if (sc == NULL)
1515 return NULL;
1516
1517 return sc->rbio;
0f113f3e 1518}
d02b48c6 1519
0821bcd4 1520BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1521{
38b051a1
TM		 1522 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1523
1524 if (sc == NULL)
1525 return NULL;
1526
1527 if (sc->bbio != NULL) {
2e7dc7cd
MC		 1528 /*
1529 * If |bbio| is active, the true caller-configured BIO is its
1530 * |next_bio|.
1531 */
38b051a1 1532 return BIO_next(sc->bbio);
2e7dc7cd 1533 }
38b051a1 1534 return sc->wbio;
0f113f3e 1535}
d02b48c6 1536
0821bcd4 1537int SSL_get_fd(const SSL *s)
0f113f3e 1538{
2e7dc7cd 1539 return SSL_get_rfd(s);
0f113f3e 1540}
24cbf3ef 1541
0821bcd4 1542int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1543{
1544 int ret = -1;
1545 BIO *b, *r;
1546
1547 b = SSL_get_rbio(s);
1548 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1549 if (r != NULL)
1550 BIO_get_fd(r, &ret);
26a7d938 1551 return ret;
0f113f3e 1552}
d02b48c6 1553
0821bcd4 1554int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1555{
1556 int ret = -1;
1557 BIO *b, *r;
1558
1559 b = SSL_get_wbio(s);
1560 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1561 if (r != NULL)
1562 BIO_get_fd(r, &ret);
26a7d938 1563 return ret;
0f113f3e 1564}
24cbf3ef 1565
bc36ee62 1566#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1567int SSL_set_fd(SSL *s, int fd)
1568{
1569 int ret = 0;
1570 BIO *bio = NULL;
1571
1572 bio = BIO_new(BIO_s_socket());
1573
1574 if (bio == NULL) {
6849b73c 1575 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
0f113f3e
MC		 1576 goto err;
1577 }
1578 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1579 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1580#ifndef OPENSSL_NO_KTLS
1581 /*
1582 * The new socket is created successfully regardless of ktls_enable.
1583 * ktls_enable doesn't change any functionality of the socket, except
1584 * changing the setsockopt to enable the processing of ktls_start.
1585 * Thus, it is not a problem to call it for non-TLS sockets.
1586 */
1587 ktls_enable(fd);
1588#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1589 ret = 1;
1590 err:
26a7d938 1591 return ret;
0f113f3e 1592}
d02b48c6 1593
0f113f3e
MC		 1594int SSL_set_wfd(SSL *s, int fd)
1595{
2e7dc7cd 1596 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1597
2e7dc7cd
MC		 1598 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1599 || (int)BIO_get_fd(rbio, NULL) != fd) {
1600 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1601
1602 if (bio == NULL) {
6849b73c 1603 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1604 return 0;
0f113f3e
MC		 1605 }
1606 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1607 SSL_set0_wbio(s, bio);
50ec7505
BP		 1608#ifndef OPENSSL_NO_KTLS
1609 /*
1610 * The new socket is created successfully regardless of ktls_enable.
1611 * ktls_enable doesn't change any functionality of the socket, except
1612 * changing the setsockopt to enable the processing of ktls_start.
1613 * Thus, it is not a problem to call it for non-TLS sockets.
1614 */
1615 ktls_enable(fd);
1616#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1617 } else {
65e2d672
MC		 1618 BIO_up_ref(rbio);
1619 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1620 }
1621 return 1;
0f113f3e
MC		 1622}
1623
1624int SSL_set_rfd(SSL *s, int fd)
1625{
2e7dc7cd 1626 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1627
2e7dc7cd
MC		 1628 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1629 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1630 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1631
1632 if (bio == NULL) {
6849b73c 1633 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
2e7dc7cd 1634 return 0;
0f113f3e
MC		 1635 }
1636 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1637 SSL_set0_rbio(s, bio);
2e7dc7cd 1638 } else {
65e2d672
MC		 1639 BIO_up_ref(wbio);
1640 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1641 }
1642
1643 return 1;
0f113f3e
MC		 1644}
1645#endif
ca03109c
BM		 1646
1647/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1648size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1649{
1650 size_t ret = 0;
38b051a1
TM		 1651 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1652
1653 if (sc == NULL)
1654 return 0;
0f113f3e 1655
38b051a1 1656 ret = sc->s3.tmp.finish_md_len;
555cbb32
TS		 1657 if (count > ret)
1658 count = ret;
38b051a1 1659 memcpy(buf, sc->s3.tmp.finish_md, count);
0f113f3e
MC		 1660 return ret;
1661}
ca03109c
BM		 1662
1663/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1664size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1665{
1666 size_t ret = 0;
38b051a1 1667 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
ca03109c 1668
38b051a1
TM		 1669 if (sc == NULL)
1670 return 0;
1671
1672 ret = sc->s3.tmp.peer_finish_md_len;
555cbb32
TS		 1673 if (count > ret)
1674 count = ret;
38b051a1 1675 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1676 return ret;
1677}
ca03109c 1678
0821bcd4 1679int SSL_get_verify_mode(const SSL *s)
0f113f3e 1680{
38b051a1
TM		 1681 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1682
1683 if (sc == NULL)
1684 return 0;
1685
1686 return sc->verify_mode;
0f113f3e 1687}
d02b48c6 1688
0821bcd4 1689int SSL_get_verify_depth(const SSL *s)
0f113f3e 1690{
38b051a1
TM		 1691 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1692
1693 if (sc == NULL)
1694 return 0;
1695
1696 return X509_VERIFY_PARAM_get_depth(sc->param);
0f113f3e 1697}
7f89714e 1698
0f113f3e 1699int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
38b051a1
TM		 1700 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1701
1702 if (sc == NULL)
1703 return NULL;
1704
1705 return sc->verify_callback;
0f113f3e 1706}
d02b48c6 1707
0821bcd4 1708int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1709{
26a7d938 1710 return ctx->verify_mode;
0f113f3e 1711}
d02b48c6 1712
0821bcd4 1713int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1714{
1715 return X509_VERIFY_PARAM_get_depth(ctx->param);
1716}
1717
1718int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1719 return ctx->default_verify_callback;
0f113f3e
MC		 1720}
1721
1722void SSL_set_verify(SSL *s, int mode,
1723 int (*callback) (int ok, X509_STORE_CTX *ctx))
1724{
38b051a1
TM		 1725 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1726
1727 if (sc == NULL)
1728 return;
1729
1730 sc->verify_mode = mode;
0f113f3e 1731 if (callback != NULL)
38b051a1 1732 sc->verify_callback = callback;
0f113f3e
MC		 1733}
1734
1735void SSL_set_verify_depth(SSL *s, int depth)
1736{
38b051a1
TM		 1737 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1738
1739 if (sc == NULL)
1740 return;
1741
1742 X509_VERIFY_PARAM_set_depth(sc->param, depth);
0f113f3e
MC		 1743}
1744
1745void SSL_set_read_ahead(SSL *s, int yes)
1746{
38b051a1 1747 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4566dae7 1748 OSSL_PARAM options[2], *opts = options;
38b051a1
TM		 1749
1750 if (sc == NULL)
1751 return;
1752
1753 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
4566dae7
MC		 1754
1755 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1756 &sc->rlayer.read_ahead);
1757 *opts = OSSL_PARAM_construct_end();
1758
1759 /* Ignore return value */
1760 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
0f113f3e 1761}
d02b48c6 1762
0821bcd4 1763int SSL_get_read_ahead(const SSL *s)
0f113f3e 1764{
38b051a1
TM		 1765 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1766
1767 if (sc == NULL)
1768 return 0;
1769
1770 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
0f113f3e 1771}
d02b48c6 1772
0821bcd4 1773int SSL_pending(const SSL *s)
0f113f3e 1774{
8b0e934a
MC		 1775 size_t pending = s->method->ssl_pending(s);
1776
0f113f3e
MC		 1777 /*
1778 * SSL_pending cannot work properly if read-ahead is enabled
1779 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1780 * impossible to fix since SSL_pending cannot report errors that may be
1781 * observed while scanning the new data. (Note that SSL_pending() is
1782 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1783 *
1784 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1785 * we just return INT_MAX.
0f113f3e 1786 */
348240c6 1787 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1788}
d02b48c6 1789
49580f25
MC		 1790int SSL_has_pending(const SSL *s)
1791{
1792 /*
1793 * Similar to SSL_pending() but returns a 1 to indicate that we have
6d6b295a
MC		 1794 * processed or unprocessed data available or 0 otherwise (as opposed to the
1795 * number of bytes available). Unlike SSL_pending() this will take into
1796 * account read_ahead data. A 1 return simply indicates that we have data.
1797 * That data may not result in any application data, or we may fail to parse
1798 * the records for some reason.
49580f25 1799 */
38b051a1
TM		 1800 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1801
6d6b295a
MC		 1802 /* Check buffered app data if any first */
1803 if (SSL_CONNECTION_IS_DTLS(sc)) {
eddb067e 1804 TLS_RECORD *rdata;
6d6b295a
MC		 1805 pitem *item, *iter;
1806
1807 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1808 while ((item = pqueue_next(&iter)) != NULL) {
1809 rdata = item->data;
eddb067e 1810 if (rdata->length > 0)
6d6b295a
MC		 1811 return 1;
1812 }
1813 }
38b051a1
TM		 1814
1815 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
49580f25
MC		 1816 return 1;
1817
38b051a1 1818 return RECORD_LAYER_read_pending(&sc->rlayer);
49580f25
MC		 1819}
1820
8c2bfd25 1821X509 *SSL_get1_peer_certificate(const SSL *s)
0f113f3e 1822{
8c2bfd25 1823 X509 *r = SSL_get0_peer_certificate(s);
d02b48c6 1824
8c2bfd25
TS		 1825 if (r != NULL)
1826 X509_up_ref(r);
0f113f3e 1827
26a7d938 1828 return r;
0f113f3e 1829}
d02b48c6 1830
8c2bfd25
TS		 1831X509 *SSL_get0_peer_certificate(const SSL *s)
1832{
38b051a1
TM		 1833 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1834
1835 if (sc == NULL)
1836 return NULL;
1837
1838 if (sc->session == NULL)
8c2bfd25
TS		 1839 return NULL;
1840 else
38b051a1 1841 return sc->session->peer;
8c2bfd25
TS		 1842}
1843
0821bcd4 1844STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1845{
1846 STACK_OF(X509) *r;
38b051a1 1847 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
0f113f3e 1848
38b051a1
TM		 1849 if (sc == NULL)
1850 return NULL;
1851
1852 if (sc->session == NULL)
0f113f3e
MC		 1853 r = NULL;
1854 else
38b051a1 1855 r = sc->session->peer_chain;
0f113f3e
MC		 1856
1857 /*
1858 * If we are a client, cert_chain includes the peer's own certificate; if
1859 * we are a server, it does not.
1860 */
1861
26a7d938 1862 return r;
0f113f3e
MC		 1863}
1864
1865/*
1866 * Now in theory, since the calling process own 't' it should be safe to
1867 * modify. We need to be able to read f without being hassled
1868 */
17dd65e6 1869int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1870{
16203f7b 1871 int i;
38b051a1
TM		 1872 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1873 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1874 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1875
1876 if (tsc == NULL || fsc == NULL)
1877 return 0;
1878
3e6a0d57 1879 /* Do we need to do SSL locking? */
61986d32 1880 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1881 return 0;
69f68237 1882 }
0f113f3e
MC		 1883
1884 /*
87d9cafa 1885 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1886 */
1887 if (t->method != f->method) {
38b051a1 1888 t->method->ssl_deinit(t);
919ba009 1889 t->method = f->method;
38b051a1 1890 if (t->method->ssl_init(t) == 0)
919ba009 1891 return 0;
0f113f3e
MC		 1892 }
1893
38b051a1
TM		 1894 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1895 ssl_cert_free(tsc->cert);
1896 tsc->cert = fsc->cert;
1897 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
17dd65e6 1898 return 0;
69f68237 1899 }
17dd65e6
MC		 1900
1901 return 1;
0f113f3e 1902}
d02b48c6 1903
58964a49 1904/* Fix this so it checks all the valid key/cert options */
0821bcd4 1905int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1906{
a230b26e 1907 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
6849b73c 1908 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1909 return 0;
0f113f3e
MC		 1910 }
1911 if (ctx->cert->key->privatekey == NULL) {
6849b73c 1912 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1913 return 0;
0f113f3e 1914 }
26a7d938
K		 1915 return X509_check_private_key
1916 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1917}
d02b48c6 1918
58964a49 1919/* Fix this function so that it takes an optional type parameter */
0821bcd4 1920int SSL_check_private_key(const SSL *ssl)
0f113f3e 1921{
38b051a1
TM		 1922 const SSL_CONNECTION *sc;
1923
1924 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
6849b73c 1925 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1926 return 0;
0f113f3e 1927 }
38b051a1 1928 if (sc->cert->key->x509 == NULL) {
6849b73c 1929 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1930 return 0;
0f113f3e 1931 }
38b051a1 1932 if (sc->cert->key->privatekey == NULL) {
6849b73c 1933 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1934 return 0;
0f113f3e 1935 }
38b051a1
TM		 1936 return X509_check_private_key(sc->cert->key->x509,
1937 sc->cert->key->privatekey);
0f113f3e 1938}
d02b48c6 1939
07bbc92c
MC		 1940int SSL_waiting_for_async(SSL *s)
1941{
38b051a1
TM		 1942 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1943
1944 if (sc == NULL)
1945 return 0;
1946
1947 if (sc->job)
82676094
MC		 1948 return 1;
1949
07bbc92c
MC		 1950 return 0;
1951}
1952
ff75a257 1953int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1954{
38b051a1
TM		 1955 ASYNC_WAIT_CTX *ctx;
1956 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
ff75a257 1957
38b051a1
TM		 1958 if (sc == NULL)
1959 return 0;
1960
1961 if ((ctx = sc->waitctx) == NULL)
ff75a257
MC		 1962 return 0;
1963 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1964}
f4da39d2 1965
ff75a257
MC		 1966int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1967 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1968{
38b051a1
TM		 1969 ASYNC_WAIT_CTX *ctx;
1970 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
ff75a257 1971
38b051a1
TM		 1972 if (sc == NULL)
1973 return 0;
1974
1975 if ((ctx = sc->waitctx) == NULL)
ff75a257
MC		 1976 return 0;
1977 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1978 numdelfds);
f4da39d2
MC		 1979}
1980
9f5a87fd
PY		 1981int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1982{
1983 ctx->async_cb = callback;
1984 return 1;
1985}
1986
1987int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1988{
1989 ctx->async_cb_arg = arg;
1990 return 1;
1991}
1992
1993int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1994{
38b051a1
TM		 1995 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1996
1997 if (sc == NULL)
1998 return 0;
1999
2000 sc->async_cb = callback;
9f5a87fd
PY		 2001 return 1;
2002}
2003
2004int SSL_set_async_callback_arg(SSL *s, void *arg)
2005{
38b051a1
TM		 2006 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2007
2008 if (sc == NULL)
2009 return 0;
2010
2011 sc->async_cb_arg = arg;
9f5a87fd
PY		 2012 return 1;
2013}
2014
2015int SSL_get_async_status(SSL *s, int *status)
2016{
38b051a1
TM		 2017 ASYNC_WAIT_CTX *ctx;
2018 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
9f5a87fd 2019
38b051a1
TM		 2020 if (sc == NULL)
2021 return 0;
2022
2023 if ((ctx = sc->waitctx) == NULL)
9f5a87fd
PY		 2024 return 0;
2025 *status = ASYNC_WAIT_CTX_get_status(ctx);
2026 return 1;
2027}
2028
4f43d0e7 2029int SSL_accept(SSL *s)
0f113f3e 2030{
38b051a1
TM		 2031 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2032
2033 if (sc == NULL)
2034 return 0;
2035
2036 if (sc->handshake_func == NULL) {
0f113f3e
MC		 2037 /* Not properly initialized yet */
2038 SSL_set_accept_state(s);
07bbc92c 2039 }
add2f5ca
MC		 2040
2041 return SSL_do_handshake(s);
0f113f3e 2042}
d02b48c6 2043
4f43d0e7 2044int SSL_connect(SSL *s)
0f113f3e 2045{
38b051a1
TM		 2046 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2047
2048 if (sc == NULL)
2049 return 0;
2050
2051 if (sc->handshake_func == NULL) {
0f113f3e
MC		 2052 /* Not properly initialized yet */
2053 SSL_set_connect_state(s);
add2f5ca 2054 }
b31b04d9 2055
add2f5ca 2056 return SSL_do_handshake(s);
0f113f3e 2057}
d02b48c6 2058
0821bcd4 2059long SSL_get_default_timeout(const SSL *s)
0f113f3e 2060{
f0131dc0 2061 return (long int)ossl_time2seconds(s->method->get_timeout());
0f113f3e
MC		 2062}
2063
9f5a87fd
PY		 2064static int ssl_async_wait_ctx_cb(void *arg)
2065{
2066 SSL *s = (SSL *)arg;
38b051a1 2067 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
9f5a87fd 2068
38b051a1
TM		 2069 if (sc == NULL)
2070 return 0;
2071
2072 return sc->async_cb(s, sc->async_cb_arg);
9f5a87fd
PY		 2073}
2074
7fecbf6f 2075static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 2076 int (*func) (void *))
2077{
add2f5ca 2078 int ret;
38b051a1
TM		 2079 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2080
2081 if (sc == NULL)
2082 return 0;
2083
2084 if (sc->waitctx == NULL) {
2085 sc->waitctx = ASYNC_WAIT_CTX_new();
2086 if (sc->waitctx == NULL)
ff75a257 2087 return -1;
38b051a1 2088 if (sc->async_cb != NULL
9f5a87fd 2089 && !ASYNC_WAIT_CTX_set_callback
38b051a1 2090 (sc->waitctx, ssl_async_wait_ctx_cb, s))
9f5a87fd 2091 return -1;
ff75a257 2092 }
07f620e3 2093
38b051a1
TM		 2094 sc->rwstate = SSL_NOTHING;
2095 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
a230b26e 2096 sizeof(struct ssl_async_args))) {
add2f5ca 2097 case ASYNC_ERR:
38b051a1 2098 sc->rwstate = SSL_NOTHING;
6849b73c 2099 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 2100 return -1;
2101 case ASYNC_PAUSE:
38b051a1 2102 sc->rwstate = SSL_ASYNC_PAUSED;
add2f5ca 2103 return -1;
fc7f190c 2104 case ASYNC_NO_JOBS:
38b051a1 2105 sc->rwstate = SSL_ASYNC_NO_JOBS;
fc7f190c 2106 return -1;
add2f5ca 2107 case ASYNC_FINISH:
38b051a1 2108 sc->job = NULL;
add2f5ca
MC		 2109 return ret;
2110 default:
38b051a1 2111 sc->rwstate = SSL_NOTHING;
6849b73c 2112 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 2113 /* Shouldn't happen */
2114 return -1;
2115 }
2116}
07bbc92c 2117
add2f5ca 2118static int ssl_io_intern(void *vargs)
07bbc92c
MC		 2119{
2120 struct ssl_async_args *args;
2121 SSL *s;
2122 void *buf;
348240c6 2123 size_t num;
38b051a1 2124 SSL_CONNECTION *sc;
07bbc92c
MC		 2125
2126 args = (struct ssl_async_args *)vargs;
2127 s = args->s;
2128 buf = args->buf;
2129 num = args->num;
38b051a1
TM		 2130 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2131 return -1;
2132
ec447924
MC		 2133 switch (args->type) {
2134 case READFUNC:
38b051a1 2135 return args->f.func_read(s, buf, num, &sc->asyncrw);
ec447924 2136 case WRITEFUNC:
38b051a1 2137 return args->f.func_write(s, buf, num, &sc->asyncrw);
ec447924
MC		 2138 case OTHERFUNC:
2139 return args->f.func_other(s);
2140 }
2141 return -1;
07bbc92c
MC		 2142}
2143
4ee7d3f9 2144int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 2145{
38b051a1
TM		 2146 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2147
2148 if (sc == NULL)
2149 return -1;
2150
2151 if (sc->handshake_func == NULL) {
6849b73c 2152 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2153 return -1;
2154 }
2155
38b051a1
TM		 2156 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2157 sc->rwstate = SSL_NOTHING;
4ee7d3f9 2158 return 0;
0f113f3e 2159 }
07bbc92c 2160
38b051a1
TM		 2161 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2162 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
6849b73c 2163 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
0a5ece5b
MC		 2164 return 0;
2165 }
564547e4
MC		 2166 /*
2167 * If we are a client and haven't received the ServerHello etc then we
2168 * better do that
2169 */
38b051a1 2170 ossl_statem_check_finish_init(sc, 0);
0a5ece5b 2171
38b051a1 2172 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 2173 struct ssl_async_args args;
eda75751 2174 int ret;
add2f5ca
MC		 2175
2176 args.s = s;
2177 args.buf = buf;
2178 args.num = num;
ec447924
MC		 2179 args.type = READFUNC;
2180 args.f.func_read = s->method->ssl_read;
add2f5ca 2181
eda75751 2182 ret = ssl_start_async_job(s, &args, ssl_io_intern);
38b051a1 2183 *readbytes = sc->asyncrw;
eda75751 2184 return ret;
07bbc92c 2185 } else {
54105ddd 2186 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 2187 }
0f113f3e
MC		 2188}
2189
4ee7d3f9 2190int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 2191{
2192 int ret;
54105ddd 2193 size_t readbytes;
eda75751
MC		 2194
2195 if (num < 0) {
6849b73c 2196 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
eda75751
MC		 2197 return -1;
2198 }
2199
4ee7d3f9 2200 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 2201
2202 /*
2203 * The cast is safe here because ret should be <= INT_MAX because num is
2204 * <= INT_MAX
2205 */
2206 if (ret > 0)
54105ddd 2207 ret = (int)readbytes;
eda75751
MC		 2208
2209 return ret;
2210}
2211
4ee7d3f9
KR		 2212int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2213{
2214 int ret = ssl_read_internal(s, buf, num, readbytes);
2215
2216 if (ret < 0)
2217 ret = 0;
2218 return ret;
2219}
2220
f533fbd4 2221int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 2222{
2223 int ret;
38b051a1
TM		 2224 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2225
2226 /* TODO(QUIC): This will need special handling for QUIC */
2227 if (sc == NULL)
2228 return 0;
d781d247 2229
38b051a1 2230 if (!sc->server) {
6849b73c 2231 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 2232 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2233 }
2234
38b051a1 2235 switch (sc->early_data_state) {
d781d247
MC		 2236 case SSL_EARLY_DATA_NONE:
2237 if (!SSL_in_before(s)) {
6849b73c 2238 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 2239 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2240 }
2241 /* fall through */
2242
2243 case SSL_EARLY_DATA_ACCEPT_RETRY:
38b051a1 2244 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
d781d247
MC		 2245 ret = SSL_accept(s);
2246 if (ret <= 0) {
2247 /* NBIO or error */
38b051a1 2248 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 2249 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2250 }
2251 /* fall through */
2252
2253 case SSL_EARLY_DATA_READ_RETRY:
38b051a1
TM		 2254 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2255 sc->early_data_state = SSL_EARLY_DATA_READING;
d781d247
MC		 2256 ret = SSL_read_ex(s, buf, num, readbytes);
2257 /*
ef6c191b
MC		 2258 * State machine will update early_data_state to
2259 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2260 * message
d781d247 2261 */
38b051a1 2262 if (ret > 0 || (ret <= 0 && sc->early_data_state
d781d247 2263 != SSL_EARLY_DATA_FINISHED_READING)) {
38b051a1 2264 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 2265 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2266 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2267 }
2268 } else {
38b051a1 2269 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
d781d247
MC		 2270 }
2271 *readbytes = 0;
f533fbd4 2272 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 2273
2274 default:
6849b73c 2275 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
f533fbd4 2276 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 2277 }
2278}
2279
f5b519c4 2280int SSL_get_early_data_status(const SSL *s)
1ea4d09a 2281{
38b051a1
TM		 2282 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2283
2284 /* TODO(QUIC): This will need special handling for QUIC */
2285 if (sc == NULL)
2286 return 0;
2287
2288 return sc->ext.early_data;
1ea4d09a
MC		 2289}
2290
4ee7d3f9 2291static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 2292{
38b051a1
TM		 2293 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2294
2295 if (sc == NULL)
2296 return 0;
2297
2298 if (sc->handshake_func == NULL) {
6849b73c 2299 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2300 return -1;
2301 }
2302
38b051a1 2303 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 2304 return 0;
0f113f3e 2305 }
38b051a1 2306 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 2307 struct ssl_async_args args;
eda75751 2308 int ret;
0f113f3e 2309
add2f5ca
MC		 2310 args.s = s;
2311 args.buf = buf;
2312 args.num = num;
ec447924
MC		 2313 args.type = READFUNC;
2314 args.f.func_read = s->method->ssl_peek;
07bbc92c 2315
eda75751 2316 ret = ssl_start_async_job(s, &args, ssl_io_intern);
38b051a1 2317 *readbytes = sc->asyncrw;
eda75751 2318 return ret;
add2f5ca 2319 } else {
54105ddd 2320 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 2321 }
07bbc92c
MC		 2322}
2323
4ee7d3f9 2324int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 2325{
2326 int ret;
4ee7d3f9 2327 size_t readbytes;
7ee8627f
MC		 2328
2329 if (num < 0) {
6849b73c 2330 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
7ee8627f
MC		 2331 return -1;
2332 }
2333
4ee7d3f9 2334 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 2335
2336 /*
2337 * The cast is safe here because ret should be <= INT_MAX because num is
2338 * <= INT_MAX
2339 */
2340 if (ret > 0)
4ee7d3f9 2341 ret = (int)readbytes;
7ee8627f
MC		 2342
2343 return ret;
2344}
2345
4ee7d3f9
KR		 2346
2347int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2348{
2349 int ret = ssl_peek_internal(s, buf, num, readbytes);
2350
2351 if (ret < 0)
2352 ret = 0;
2353 return ret;
2354}
2355
2356int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 2357{
38b051a1
TM		 2358 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2359
2360 if (sc == NULL)
2361 return 0;
2362
2363 if (sc->handshake_func == NULL) {
6849b73c 2364 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2365 return -1;
2366 }
2367
38b051a1
TM		 2368 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2369 sc->rwstate = SSL_NOTHING;
6849b73c 2370 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
4ee7d3f9 2371 return -1;
0f113f3e 2372 }
07bbc92c 2373
38b051a1
TM		 2374 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2375 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2376 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
6849b73c 2377 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 2378 return 0;
0a5ece5b 2379 }
564547e4 2380 /* If we are a client and haven't sent the Finished we better do that */
38b051a1 2381 ossl_statem_check_finish_init(sc, 1);
49e7fe12 2382
38b051a1 2383 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 2384 int ret;
add2f5ca
MC		 2385 struct ssl_async_args args;
2386
2387 args.s = s;
2388 args.buf = (void *)buf;
2389 args.num = num;
ec447924
MC		 2390 args.type = WRITEFUNC;
2391 args.f.func_write = s->method->ssl_write;
add2f5ca 2392
7ee8627f 2393 ret = ssl_start_async_job(s, &args, ssl_io_intern);
38b051a1 2394 *written = sc->asyncrw;
7ee8627f 2395 return ret;
07bbc92c 2396 } else {
7ee8627f 2397 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2398 }
0f113f3e 2399}
d02b48c6 2400
7c3a7561
BP		 2401ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2402{
2403 ossl_ssize_t ret;
38b051a1 2404 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7c3a7561 2405
38b051a1
TM		 2406 if (sc == NULL)
2407 return 0;
2408
2409 if (sc->handshake_func == NULL) {
6849b73c 2410 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2411 return -1;
2412 }
2413
38b051a1
TM		 2414 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2415 sc->rwstate = SSL_NOTHING;
6849b73c 2416 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
7c3a7561
BP		 2417 return -1;
2418 }
2419
38b051a1 2420 if (!BIO_get_ktls_send(sc->wbio)) {
6849b73c 2421 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2422 return -1;
2423 }
2424
2425 /* If we have an alert to send, lets send it */
38b051a1 2426 if (sc->s3.alert_dispatch) {
7c3a7561
BP		 2427 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2428 if (ret <= 0) {
2429 /* SSLfatal() already called if appropriate */
2430 return ret;
2431 }
2432 /* if it went, fall through and send more stuff */
2433 }
2434
38b051a1
TM		 2435 sc->rwstate = SSL_WRITING;
2436 if (BIO_flush(sc->wbio) <= 0) {
2437 if (!BIO_should_retry(sc->wbio)) {
2438 sc->rwstate = SSL_NOTHING;
7c3a7561
BP		 2439 } else {
2440#ifdef EAGAIN
2441 set_sys_error(EAGAIN);
2442#endif
2443 }
2444 return -1;
2445 }
2446
712c0942 2447#ifdef OPENSSL_NO_KTLS
fa7a8074
RL		 2448 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2449 "can't call ktls_sendfile(), ktls disabled");
712c0942 2450 return -1;
7c3a7561 2451#else
712c0942 2452 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
7c3a7561
BP		 2453 if (ret < 0) {
2454#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2455 if ((get_last_sys_error() == EAGAIN) ||
2456 (get_last_sys_error() == EINTR) ||
2457 (get_last_sys_error() == EBUSY))
38b051a1 2458 BIO_set_retry_write(sc->wbio);
7c3a7561
BP		 2459 else
2460#endif
6849b73c 2461 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2462 return ret;
2463 }
38b051a1 2464 sc->rwstate = SSL_NOTHING;
7c3a7561 2465 return ret;
712c0942 2466#endif
7c3a7561
BP		 2467}
2468
4ee7d3f9
KR		 2469int SSL_write(SSL *s, const void *buf, int num)
2470{
2471 int ret;
2472 size_t written;
2473
2474 if (num < 0) {
6849b73c 2475 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
4ee7d3f9
KR		 2476 return -1;
2477 }
2478
2479 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2480
2481 /*
2482 * The cast is safe here because ret should be <= INT_MAX because num is
2483 * <= INT_MAX
2484 */
2485 if (ret > 0)
2486 ret = (int)written;
2487
2488 return ret;
2489}
2490
2491int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2492{
2493 int ret = ssl_write_internal(s, buf, num, written);
2494
2495 if (ret < 0)
2496 ret = 0;
2497 return ret;
2498}
2499
0665b4ed 2500int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2501{
a0cb628b 2502 int ret, early_data_state;
2a8db717 2503 size_t writtmp;
f7414b08 2504 uint32_t partialwrite;
38b051a1
TM		 2505 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2506
2507 /* TODO(QUIC): This will need special handling for QUIC */
2508 if (sc == NULL)
2509 return 0;
49e7fe12 2510
38b051a1 2511 switch (sc->early_data_state) {
49e7fe12 2512 case SSL_EARLY_DATA_NONE:
38b051a1 2513 if (sc->server
09f28874 2514 || !SSL_in_before(s)
38b051a1
TM		 2515 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2516 && (sc->psk_use_session_cb == NULL))) {
6849b73c 2517 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2518 return 0;
2519 }
2520 /* fall through */
2521
2522 case SSL_EARLY_DATA_CONNECT_RETRY:
38b051a1 2523 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
49e7fe12
MC		 2524 ret = SSL_connect(s);
2525 if (ret <= 0) {
2526 /* NBIO or error */
38b051a1 2527 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
49e7fe12
MC		 2528 return 0;
2529 }
2530 /* fall through */
2531
2532 case SSL_EARLY_DATA_WRITE_RETRY:
38b051a1 2533 sc->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2534 /*
2535 * We disable partial write for early data because we don't keep track
2536 * of how many bytes we've written between the SSL_write_ex() call and
2537 * the flush if the flush needs to be retried)
2538 */
38b051a1
TM		 2539 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2540 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2541 ret = SSL_write_ex(s, buf, num, &writtmp);
38b051a1 2542 sc->mode |= partialwrite;
2a8db717 2543 if (!ret) {
38b051a1 2544 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717
MC		 2545 return ret;
2546 }
38b051a1 2547 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2a8db717
MC		 2548 /* fall through */
2549
2550 case SSL_EARLY_DATA_WRITE_FLUSH:
2551 /* The buffering BIO is still in place so we need to flush it */
38b051a1 2552 if (statem_flush(sc) != 1)
2a8db717 2553 return 0;
2a8db717 2554 *written = num;
38b051a1 2555 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2556 return 1;
49e7fe12 2557
116d0da5 2558 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b 2559 case SSL_EARLY_DATA_READ_RETRY:
38b051a1 2560 early_data_state = sc->early_data_state;
09f28874 2561 /* We are a server writing to an unauthenticated client */
38b051a1 2562 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
09f28874 2563 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2564 /* The buffering BIO is still in place */
2565 if (ret)
38b051a1
TM		 2566 (void)BIO_flush(sc->wbio);
2567 sc->early_data_state = early_data_state;
09f28874
MC		 2568 return ret;
2569
49e7fe12 2570 default:
6849b73c 2571 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2572 return 0;
2573 }
2574}
2575
4f43d0e7 2576int SSL_shutdown(SSL *s)
0f113f3e
MC		 2577{
2578 /*
2579 * Note that this function behaves differently from what one might
2580 * expect. Return values are 0 for no success (yet), 1 for success; but
2581 * calling it once is usually not enough, even if blocking I/O is used
2582 * (see ssl3_shutdown).
2583 */
38b051a1 2584 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
0f113f3e 2585
38b051a1
TM		 2586 if (sc == NULL)
2587 return -1;
2588
2589 if (sc->handshake_func == NULL) {
6849b73c 2590 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 2591 return -1;
2592 }
2593
64f9f406 2594 if (!SSL_in_init(s)) {
38b051a1 2595 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2596 struct ssl_async_args args;
ec447924 2597
09134f18 2598 memset(&args, 0, sizeof(args));
64f9f406
MC		 2599 args.s = s;
2600 args.type = OTHERFUNC;
2601 args.f.func_other = s->method->ssl_shutdown;
ec447924 2602
64f9f406
MC		 2603 return ssl_start_async_job(s, &args, ssl_io_intern);
2604 } else {
2605 return s->method->ssl_shutdown(s);
2606 }
ec447924 2607 } else {
6849b73c 2608 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
64f9f406 2609 return -1;
ec447924 2610 }
0f113f3e 2611}
d02b48c6 2612
4fbfe86a 2613int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2614{
38b051a1
TM		 2615 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2616
2617 if (sc == NULL)
2618 return 0;
2619
2620 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6849b73c 2621 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
44c04a2e
MC		 2622 return 0;
2623 }
2624
2625 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2626 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
6849b73c 2627 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
44c04a2e
MC		 2628 return 0;
2629 }
2630
2631 if (!SSL_is_init_finished(s)) {
6849b73c 2632 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
44c04a2e
MC		 2633 return 0;
2634 }
2635
38b051a1 2636 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
3bec4851
MC		 2637 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2638 return 0;
2639 }
2640
38b051a1
TM		 2641 ossl_statem_set_in_init(sc, 1);
2642 sc->key_update = updatetype;
44c04a2e
MC		 2643 return 1;
2644}
2645
3499327b 2646int SSL_get_key_update_type(const SSL *s)
53d1d07d 2647{
38b051a1
TM		 2648 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2649
2650 if (sc == NULL)
2651 return 0;
2652
2653 return sc->key_update;
53d1d07d
MC		 2654}
2655
55373bfd
RS		 2656/*
2657 * Can we accept a renegotiation request? If yes, set the flag and
2658 * return 1 if yes. If not, raise error and return 0.
2659 */
38b051a1 2660static int can_renegotiate(const SSL_CONNECTION *sc)
0f113f3e 2661{
38b051a1 2662 if (SSL_CONNECTION_IS_TLS13(sc)) {
6849b73c 2663 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2664 return 0;
44c04a2e 2665 }
cda6b998 2666
38b051a1 2667 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
6849b73c 2668 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
db0f35dd
TS		 2669 return 0;
2670 }
44959ee4 2671
55373bfd
RS		 2672 return 1;
2673}
2674
2675int SSL_renegotiate(SSL *s)
2676{
38b051a1
TM		 2677 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2678
2679 if (sc == NULL)
55373bfd
RS		 2680 return 0;
2681
38b051a1
TM		 2682 if (!can_renegotiate(sc))
2683 return 0;
2684
2685 sc->renegotiate = 1;
2686 sc->new_session = 1;
26a7d938 2687 return s->method->ssl_renegotiate(s);
0f113f3e 2688}
d02b48c6 2689
44959ee4 2690int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2691{
38b051a1
TM		 2692 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2693
2694 if (sc == NULL)
2695 return 0;
2696
2697 if (!can_renegotiate(sc))
2c0980d2 2698 return 0;
c519e89f 2699
38b051a1
TM		 2700 sc->renegotiate = 1;
2701 sc->new_session = 0;
26a7d938 2702 return s->method->ssl_renegotiate(s);
0f113f3e 2703}
44959ee4 2704
3499327b 2705int SSL_renegotiate_pending(const SSL *s)
0f113f3e 2706{
38b051a1
TM		 2707 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2708
2709 if (sc == NULL)
2710 return 0;
2711
0f113f3e
MC		 2712 /*
2713 * becomes true when negotiation is requested; false again once a
2714 * handshake has finished
2715 */
38b051a1 2716 return (sc->renegotiate != 0);
0f113f3e
MC		 2717}
2718
3bfacb5f
BK		 2719int SSL_new_session_ticket(SSL *s)
2720{
38b051a1
TM		 2721 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2722
2723 if (sc == NULL)
2724 return 0;
2725
7c73fefe 2726 /* If we are in init because we're sending tickets, okay to send more. */
38b051a1
TM		 2727 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2728 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2729 || !SSL_CONNECTION_IS_TLS13(sc))
35774d55 2730 return 0;
38b051a1
TM		 2731 sc->ext.extra_tickets_expected++;
2732 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2733 ossl_statem_set_in_init(sc, 1);
35774d55 2734 return 1;
3bfacb5f
BK		 2735}
2736
0f113f3e
MC		 2737long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2738{
2739 long l;
38b051a1
TM		 2740 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2741
2742 /* TODO(QUIC): Special handling for some ctrls will be needed */
2743 if (sc == NULL)
2744 return 0;
0f113f3e
MC		 2745
2746 switch (cmd) {
2747 case SSL_CTRL_GET_READ_AHEAD:
38b051a1 2748 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
0f113f3e 2749 case SSL_CTRL_SET_READ_AHEAD:
38b051a1
TM		 2750 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2751 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
26a7d938 2752 return l;
0f113f3e
MC		 2753
2754 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
38b051a1 2755 sc->msg_callback_arg = parg;
0f113f3e
MC		 2756 return 1;
2757
0f113f3e 2758 case SSL_CTRL_MODE:
4566dae7
MC		 2759 {
2760 OSSL_PARAM options[2], *opts = options;
2761
2762 sc->mode |= larg;
2763
2764 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2765 &sc->mode);
2766 *opts = OSSL_PARAM_construct_end();
2767
2768 /* Ignore return value */
2769 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2770
2771 return sc->mode;
2772 }
0f113f3e 2773 case SSL_CTRL_CLEAR_MODE:
38b051a1 2774 return (sc->mode &= ~larg);
0f113f3e 2775 case SSL_CTRL_GET_MAX_CERT_LIST:
38b051a1 2776 return (long)sc->max_cert_list;
0f113f3e 2777 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2778 if (larg < 0)
2779 return 0;
38b051a1
TM		 2780 l = (long)sc->max_cert_list;
2781 sc->max_cert_list = (size_t)larg;
348240c6 2782 return l;
0f113f3e
MC		 2783 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2784 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2785 return 0;
50ec7505 2786#ifndef OPENSSL_NO_KTLS
38b051a1 2787 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
50ec7505
BP		 2788 return 0;
2789#endif /* OPENSSL_NO_KTLS */
38b051a1
TM		 2790 sc->max_send_fragment = larg;
2791 if (sc->max_send_fragment < sc->split_send_fragment)
2792 sc->split_send_fragment = sc->max_send_fragment;
d102d9df
MC		 2793 return 1;
2794 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
38b051a1 2795 if ((size_t)larg > sc->max_send_fragment || larg == 0)
d102d9df 2796 return 0;
38b051a1 2797 sc->split_send_fragment = larg;
0f113f3e 2798 return 1;
d102d9df
MC		 2799 case SSL_CTRL_SET_MAX_PIPELINES:
2800 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2801 return 0;
38b051a1 2802 sc->max_pipelines = larg;
cffafb5f
MC		 2803 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2804 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
07077415 2805 return 1;
0f113f3e 2806 case SSL_CTRL_GET_RI_SUPPORT:
38b051a1 2807 return sc->s3.send_connection_binding;
dfb39f73 2808 case SSL_CTRL_SET_RETRY_VERIFY:
38b051a1 2809 sc->rwstate = SSL_RETRY_VERIFY;
dfb39f73 2810 return 1;
0f113f3e 2811 case SSL_CTRL_CERT_FLAGS:
38b051a1 2812 return (sc->cert->cert_flags |= larg);
0f113f3e 2813 case SSL_CTRL_CLEAR_CERT_FLAGS:
38b051a1 2814 return (sc->cert->cert_flags &= ~larg);
0f113f3e
MC		 2815
2816 case SSL_CTRL_GET_RAW_CIPHERLIST:
2817 if (parg) {
38b051a1 2818 if (sc->s3.tmp.ciphers_raw == NULL)
0f113f3e 2819 return 0;
38b051a1
TM		 2820 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2821 return (int)sc->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2822 } else {
2823 return TLS_CIPHER_LEN;
2824 }
c5364614 2825 case SSL_CTRL_GET_EXTMS_SUPPORT:
38b051a1 2826 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
a230b26e 2827 return -1;
38b051a1 2828 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2829 return 1;
2830 else
2831 return 0;
7946ab33 2832 case SSL_CTRL_SET_MIN_PROTO_VERSION:
38b051a1 2833 return ssl_check_allowed_versions(larg, sc->max_proto_version)
c8feba72 2834 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
38b051a1 2835 &sc->min_proto_version);
3edabd3c 2836 case SSL_CTRL_GET_MIN_PROTO_VERSION:
38b051a1 2837 return sc->min_proto_version;
7946ab33 2838 case SSL_CTRL_SET_MAX_PROTO_VERSION:
38b051a1 2839 return ssl_check_allowed_versions(sc->min_proto_version, larg)
c8feba72 2840 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
38b051a1 2841 &sc->max_proto_version);
3edabd3c 2842 case SSL_CTRL_GET_MAX_PROTO_VERSION:
38b051a1 2843 return sc->max_proto_version;
0f113f3e 2844 default:
26a7d938 2845 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2846 }
2847}
2848
2849long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2850{
38b051a1
TM		 2851 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2852
2853 if (sc == NULL)
2854 return 0;
2855
0f113f3e
MC		 2856 switch (cmd) {
2857 case SSL_CTRL_SET_MSG_CALLBACK:
38b051a1
TM		 2858 sc->msg_callback = (void (*)
2859 (int write_p, int version, int content_type,
2860 const void *buf, size_t len, SSL *ssl,
2861 void *arg))(fp);
0f113f3e
MC		 2862 return 1;
2863
2864 default:
26a7d938 2865 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2866 }
2867}
d3442bc7 2868
3c1d6bbc 2869LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2870{
2871 return ctx->sessions;
2872}
2873
acce0557
P		 2874static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2875{
2876 int res = 0;
2877
2878 if (ssl_tsan_lock(ctx)) {
2879 res = tsan_load(stat);
2880 ssl_tsan_unlock(ctx);
2881 }
2882 return res;
2883}
2884
0f113f3e
MC		 2885long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2886{
2887 long l;
2888 /* For some cases with ctx == NULL perform syntax checks */
2889 if (ctx == NULL) {
2890 switch (cmd) {
de4d764e 2891 case SSL_CTRL_SET_GROUPS_LIST:
260009d8 2892 return tls1_set_groups_list(ctx, NULL, NULL, parg);
0f113f3e
MC		 2893 case SSL_CTRL_SET_SIGALGS_LIST:
2894 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2895 return tls1_set_sigalgs_list(NULL, parg, 0);
2896 default:
2897 return 0;
2898 }
2899 }
2900
2901 switch (cmd) {
2902 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2903 return ctx->read_ahead;
0f113f3e
MC		 2904 case SSL_CTRL_SET_READ_AHEAD:
2905 l = ctx->read_ahead;
2906 ctx->read_ahead = larg;
26a7d938 2907 return l;
0f113f3e
MC		 2908
2909 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2910 ctx->msg_callback_arg = parg;
2911 return 1;
2912
2913 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2914 return (long)ctx->max_cert_list;
0f113f3e 2915 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2916 if (larg < 0)
2917 return 0;
2918 l = (long)ctx->max_cert_list;
2919 ctx->max_cert_list = (size_t)larg;
2920 return l;
0f113f3e
MC		 2921
2922 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2923 if (larg < 0)
2924 return 0;
2925 l = (long)ctx->session_cache_size;
2926 ctx->session_cache_size = (size_t)larg;
2927 return l;
0f113f3e 2928 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2929 return (long)ctx->session_cache_size;
0f113f3e
MC		 2930 case SSL_CTRL_SET_SESS_CACHE_MODE:
2931 l = ctx->session_cache_mode;
2932 ctx->session_cache_mode = larg;
26a7d938 2933 return l;
0f113f3e 2934 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2935 return ctx->session_cache_mode;
0f113f3e
MC		 2936
2937 case SSL_CTRL_SESS_NUMBER:
26a7d938 2938 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2939 case SSL_CTRL_SESS_CONNECT:
acce0557 2940 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
0f113f3e 2941 case SSL_CTRL_SESS_CONNECT_GOOD:
acce0557 2942 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
0f113f3e 2943 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
acce0557 2944 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
0f113f3e 2945 case SSL_CTRL_SESS_ACCEPT:
acce0557 2946 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
0f113f3e 2947 case SSL_CTRL_SESS_ACCEPT_GOOD:
acce0557 2948 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
0f113f3e 2949 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
acce0557 2950 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
0f113f3e 2951 case SSL_CTRL_SESS_HIT:
acce0557 2952 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
0f113f3e 2953 case SSL_CTRL_SESS_CB_HIT:
acce0557 2954 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
0f113f3e 2955 case SSL_CTRL_SESS_MISSES:
acce0557 2956 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
0f113f3e 2957 case SSL_CTRL_SESS_TIMEOUTS:
acce0557 2958 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
0f113f3e 2959 case SSL_CTRL_SESS_CACHE_FULL:
acce0557 2960 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
0f113f3e
MC		 2961 case SSL_CTRL_MODE:
2962 return (ctx->mode |= larg);
2963 case SSL_CTRL_CLEAR_MODE:
2964 return (ctx->mode &= ~larg);
2965 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2966 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2967 return 0;
2968 ctx->max_send_fragment = larg;
d102d9df 2969 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2970 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2971 return 1;
d102d9df 2972 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2973 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2974 return 0;
2975 ctx->split_send_fragment = larg;
2976 return 1;
2977 case SSL_CTRL_SET_MAX_PIPELINES:
2978 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2979 return 0;
2980 ctx->max_pipelines = larg;
07077415 2981 return 1;
0f113f3e
MC		 2982 case SSL_CTRL_CERT_FLAGS:
2983 return (ctx->cert->cert_flags |= larg);
2984 case SSL_CTRL_CLEAR_CERT_FLAGS:
2985 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2986 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2987 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2988 && ssl_set_version_bound(ctx->method->version, (int)larg,
2989 &ctx->min_proto_version);
3edabd3c
CH		 2990 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2991 return ctx->min_proto_version;
7946ab33 2992 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2993 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2994 && ssl_set_version_bound(ctx->method->version, (int)larg,
2995 &ctx->max_proto_version);
3edabd3c
CH		 2996 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2997 return ctx->max_proto_version;
0f113f3e 2998 default:
26a7d938 2999 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 3000 }
3001}
3002
3003long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3004{
3005 switch (cmd) {
3006 case SSL_CTRL_SET_MSG_CALLBACK:
3007 ctx->msg_callback = (void (*)
3008 (int write_p, int version, int content_type,
3009 const void *buf, size_t len, SSL *ssl,
3010 void *arg))(fp);
3011 return 1;
3012
3013 default:
26a7d938 3014 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 3015 }
3016}
d3442bc7 3017
ccd86b68 3018int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 3019{
90d9e49a
DSH		 3020 if (a->id > b->id)
3021 return 1;
3022 if (a->id < b->id)
3023 return -1;
3024 return 0;
0f113f3e
MC		 3025}
3026
3027int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3028 const SSL_CIPHER *const *bp)
3029{
90d9e49a
DSH		 3030 if ((*ap)->id > (*bp)->id)
3031 return 1;
3032 if ((*ap)->id < (*bp)->id)
3033 return -1;
3034 return 0;
0f113f3e 3035}
d02b48c6 3036
38b051a1
TM		 3037/*
3038 * return a STACK of the ciphers available for the SSL and in order of
3039 * preference
3040 */
0821bcd4 3041STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e 3042{
38b051a1
TM		 3043 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3044
3045 if (sc != NULL) {
3046 if (sc->cipher_list != NULL) {
3047 return sc->cipher_list;
0f113f3e 3048 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 3049 return s->ctx->cipher_list;
0f113f3e
MC		 3050 }
3051 }
26a7d938 3052 return NULL;
0f113f3e
MC		 3053}
3054
831eef2c
NM		 3055STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3056{
38b051a1
TM		 3057 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3058
3059 if (sc == NULL || !sc->server)
831eef2c 3060 return NULL;
38b051a1 3061 return sc->peer_ciphers;
831eef2c
NM		 3062}
3063
8b8e5bed 3064STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 3065{
3066 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3067 int i;
38b051a1
TM		 3068 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3069
3070 if (sc == NULL)
3071 return NULL;
1d0c08b4 3072
0f113f3e
MC		 3073 ciphers = SSL_get_ciphers(s);
3074 if (!ciphers)
3075 return NULL;
38b051a1 3076 if (!ssl_set_client_disabled(sc))
1d0c08b4 3077 return NULL;
0f113f3e
MC		 3078 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3079 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
38b051a1 3080 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 3081 if (!sk)
3082 sk = sk_SSL_CIPHER_new_null();
3083 if (!sk)
3084 return NULL;
3085 if (!sk_SSL_CIPHER_push(sk, c)) {
3086 sk_SSL_CIPHER_free(sk);
3087 return NULL;
3088 }
3089 }
3090 }
3091 return sk;
3092}
8b8e5bed 3093
4f43d0e7 3094/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 3095 * algorithm id */
38b051a1 3096STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
0f113f3e
MC		 3097{
3098 if (s != NULL) {
38b051a1 3099 if (s->cipher_list_by_id != NULL)
26a7d938 3100 return s->cipher_list_by_id;
38b051a1
TM		 3101 else if (s->ssl.ctx != NULL
3102 && s->ssl.ctx->cipher_list_by_id != NULL)
3103 return s->ssl.ctx->cipher_list_by_id;
0f113f3e 3104 }
26a7d938 3105 return NULL;
0f113f3e 3106}
d02b48c6 3107
4f43d0e7 3108/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 3109const char *SSL_get_cipher_list(const SSL *s, int n)
3110{
4a640fb6 3111 const SSL_CIPHER *c;
0f113f3e
MC		 3112 STACK_OF(SSL_CIPHER) *sk;
3113
3114 if (s == NULL)
26a7d938 3115 return NULL;
0f113f3e
MC		 3116 sk = SSL_get_ciphers(s);
3117 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 3118 return NULL;
0f113f3e
MC		 3119 c = sk_SSL_CIPHER_value(sk, n);
3120 if (c == NULL)
26a7d938
K		 3121 return NULL;
3122 return c->name;
0f113f3e 3123}
d02b48c6 3124
9d5ac953
KY		 3125/** return a STACK of the ciphers available for the SSL_CTX and in order of
3126 * preference */
3127STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3128{
3129 if (ctx != NULL)
3130 return ctx->cipher_list;
3131 return NULL;
3132}
3133
3c83c5ba
SR		 3134/*
3135 * Distinguish between ciphers controlled by set_ciphersuite() and
3136 * set_cipher_list() when counting.
3137 */
3138static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3139{
3140 int i, num = 0;
3141 const SSL_CIPHER *c;
3142
3143 if (sk == NULL)
3144 return 0;
3145 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3146 c = sk_SSL_CIPHER_value(sk, i);
3147 if (c->min_tls >= TLS1_3_VERSION)
3148 continue;
3149 num++;
3150 }
3151 return num;
3152}
3153
25f923dd 3154/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 3155int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 3156{
3157 STACK_OF(SSL_CIPHER) *sk;
3158
a68eee67 3159 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
f865b081
MC		 3160 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3161 ctx->cert);
0f113f3e
MC		 3162 /*
3163 * ssl_create_cipher_list may return an empty stack if it was unable to
3164 * find a cipher matching the given rule string (for example if the rule
3165 * string specifies a cipher which has been disabled). This is not an
3166 * error as far as ssl_create_cipher_list is concerned, and hence
3167 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3168 */
3169 if (sk == NULL)
3170 return 0;
3c83c5ba 3171 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 3172 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 3173 return 0;
3174 }
3175 return 1;
3176}
d02b48c6 3177
4f43d0e7 3178/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 3179int SSL_set_cipher_list(SSL *s, const char *str)
3180{
3181 STACK_OF(SSL_CIPHER) *sk;
38b051a1 3182 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
0f113f3e 3183
38b051a1
TM		 3184 if (sc == NULL)
3185 return 0;
3186
3187 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3188 &sc->cipher_list, &sc->cipher_list_by_id, str,
3189 sc->cert);
0f113f3e
MC		 3190 /* see comment in SSL_CTX_set_cipher_list */
3191 if (sk == NULL)
3192 return 0;
3c83c5ba 3193 else if (cipher_list_tls12_num(sk) == 0) {
6849b73c 3194 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
0f113f3e
MC		 3195 return 0;
3196 }
3197 return 1;
3198}
d02b48c6 3199
a216df59 3200char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 3201{
3202 char *p;
a216df59 3203 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 3204 const SSL_CIPHER *c;
0f113f3e 3205 int i;
38b051a1
TM		 3206 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3207
3208 if (sc == NULL)
3209 return NULL;
0f113f3e 3210
38b051a1
TM		 3211 if (!sc->server
3212 || sc->peer_ciphers == NULL
a216df59 3213 || size < 2)
26a7d938 3214 return NULL;
0f113f3e
MC		 3215
3216 p = buf;
38b051a1 3217 clntsk = sc->peer_ciphers;
a216df59
MC		 3218 srvrsk = SSL_get_ciphers(s);
3219 if (clntsk == NULL || srvrsk == NULL)
3220 return NULL;
0f113f3e 3221
a216df59 3222 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 3223 return NULL;
3224
a216df59 3225 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 3226 int n;
3227
a216df59
MC		 3228 c = sk_SSL_CIPHER_value(clntsk, i);
3229 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3230 continue;
3231
0f113f3e 3232 n = strlen(c->name);
a216df59 3233 if (n + 1 > size) {
0f113f3e
MC		 3234 if (p != buf)
3235 --p;
3236 *p = '\0';
3237 return buf;
3238 }
4cacc9d5 3239 strcpy(p, c->name);
0f113f3e
MC		 3240 p += n;
3241 *(p++) = ':';
a216df59 3242 size -= n + 1;
0f113f3e
MC		 3243 }
3244 p[-1] = '\0';
26a7d938 3245 return buf;
0f113f3e
MC		 3246}
3247
7955c1f1
MC		 3248/**
3249 * Return the requested servername (SNI) value. Note that the behaviour varies
3250 * depending on:
3251 * - whether this is called by the client or the server,
3252 * - if we are before or during/after the handshake,
3253 * - if a resumption or normal handshake is being attempted/has occurred
3254 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
38b051a1 3255 *
7955c1f1 3256 * Note that only the host_name type is defined (RFC 3546).
ed3883d2 3257 */
f1fd4544 3258const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e 3259{
38b051a1
TM		 3260 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3261 int server;
3262
3263 if (sc == NULL)
3264 return NULL;
3265
7955c1f1
MC		 3266 /*
3267 * If we don't know if we are the client or the server yet then we assume
3268 * client.
3269 */
38b051a1
TM		 3270 server = sc->handshake_func == NULL ? 0 : sc->server;
3271
0f113f3e
MC		 3272 if (type != TLSEXT_NAMETYPE_host_name)
3273 return NULL;
a13c20f6 3274
7955c1f1
MC		 3275 if (server) {
3276 /**
3277 * Server side
3278 * In TLSv1.3 on the server SNI is not associated with the session
3279 * but in TLSv1.2 or below it is.
3280 *
3281 * Before the handshake:
3282 * - return NULL
3283 *
3284 * During/after the handshake (TLSv1.2 or below resumption occurred):
3285 * - If a servername was accepted by the server in the original
3286 * handshake then it will return that servername, or NULL otherwise.
3287 *
3288 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3289 * - The function will return the servername requested by the client in
3290 * this handshake or NULL if none was requested.
3291 */
38b051a1
TM		 3292 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3293 return sc->session->ext.hostname;
7955c1f1
MC		 3294 } else {
3295 /**
3296 * Client side
3297 *
3298 * Before the handshake:
3299 * - If a servername has been set via a call to
3300 * SSL_set_tlsext_host_name() then it will return that servername
3301 * - If one has not been set, but a TLSv1.2 resumption is being
3302 * attempted and the session from the original handshake had a
3303 * servername accepted by the server then it will return that
3304 * servername
3305 * - Otherwise it returns NULL
3306 *
3307 * During/after the handshake (TLSv1.2 or below resumption occurred):
9f7505ab 3308 * - If the session from the original handshake had a servername accepted
7955c1f1
MC		 3309 * by the server then it will return that servername.
3310 * - Otherwise it returns the servername set via
3311 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3312 *
3313 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3314 * - It will return the servername set via SSL_set_tlsext_host_name()
3315 * (or NULL if it was not called).
3316 */
3317 if (SSL_in_before(s)) {
38b051a1
TM		 3318 if (sc->ext.hostname == NULL
3319 && sc->session != NULL
3320 && sc->session->ssl_version != TLS1_3_VERSION)
3321 return sc->session->ext.hostname;
7955c1f1 3322 } else {
38b051a1
TM		 3323 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3324 && sc->session->ext.hostname != NULL)
3325 return sc->session->ext.hostname;
7955c1f1
MC		 3326 }
3327 }
3328
38b051a1 3329 return sc->ext.hostname;
0f113f3e 3330}
ed3883d2 3331
f1fd4544 3332int SSL_get_servername_type(const SSL *s)
0f113f3e 3333{
7955c1f1 3334 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
0f113f3e
MC		 3335 return TLSEXT_NAMETYPE_host_name;
3336 return -1;
3337}
ee2ffc27 3338
0f113f3e
MC		 3339/*
3340 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 3341 * expected that this function is called from the callback set by
0f113f3e
MC		 3342 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3343 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3344 * not included in the length. A byte string of length 0 is invalid. No byte
3345 * string may be truncated. The current, but experimental algorithm for
3346 * selecting the protocol is: 1) If the server doesn't support NPN then this
3347 * is indicated to the callback. In this case, the client application has to
3348 * abort the connection or have a default application level protocol. 2) If
3349 * the server supports NPN, but advertises an empty list then the client
f430ba31 3350 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 3351 * fallback case was enacted. 3) Otherwise, the client finds the first
3352 * protocol in the server's list that it supports and selects this protocol.
3353 * This is because it's assumed that the server has better information about
3354 * which protocol a client should use. 4) If the client doesn't support any
3355 * of the server's advertised protocols, then this is treated the same as
3356 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3357 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 3358 */
0f113f3e
MC		 3359int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3360 const unsigned char *server,
3361 unsigned int server_len,
a230b26e 3362 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 3363{
3364 unsigned int i, j;
3365 const unsigned char *result;
3366 int status = OPENSSL_NPN_UNSUPPORTED;
3367
3368 /*
3369 * For each protocol in server preference order, see if we support it.
3370 */
3371 for (i = 0; i < server_len;) {
3372 for (j = 0; j < client_len;) {
3373 if (server[i] == client[j] &&
3374 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3375 /* We found a match */
3376 result = &server[i];
3377 status = OPENSSL_NPN_NEGOTIATED;
3378 goto found;
3379 }
3380 j += client[j];
3381 j++;
3382 }
3383 i += server[i];
3384 i++;
3385 }
3386
3387 /* There's no overlap between our protocols and the server's list. */
3388 result = client;
3389 status = OPENSSL_NPN_NO_OVERLAP;
3390
3391 found:
3392 *out = (unsigned char *)result + 1;
3393 *outlen = result[0];
3394 return status;
3395}
ee2ffc27 3396
e481f9b9 3397#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 3398/*
3399 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3400 * client's requested protocol for this connection and returns 0. If the
3401 * client didn't request any protocol, then *data is set to NULL. Note that
3402 * the client can request any protocol it chooses. The value returned from
3403 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 3404 * provided by the callback.
3405 */
0f113f3e
MC		 3406void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3407 unsigned *len)
3408{
38b051a1
TM		 3409 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3410
3411 if (sc == NULL) {
3412 /* We have no other way to indicate error */
3413 *data = NULL;
3414 *len = 0;
3415 return;
3416 }
3417
3418 *data = sc->ext.npn;
12a765a5 3419 if (*data == NULL) {
0f113f3e
MC		 3420 *len = 0;
3421 } else {
38b051a1 3422 *len = (unsigned int)sc->ext.npn_len;
0f113f3e
MC		 3423 }
3424}
3425
3426/*
aff8c126 3427 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 3428 * a TLS server needs a list of supported protocols for Next Protocol
3429 * Negotiation. The returned list must be in wire format. The list is
3430 * returned by setting |out| to point to it and |outlen| to its length. This
3431 * memory will not be modified, but one should assume that the SSL* keeps a
3432 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3433 * wishes to advertise. Otherwise, no such extension will be included in the
3434 * ServerHello.
3435 */
aff8c126 3436void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 3437 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 3438 void *arg)
0f113f3e 3439{
aff8c126
RS		 3440 ctx->ext.npn_advertised_cb = cb;
3441 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 3442}
3443
3444/*
3445 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 3446 * client needs to select a protocol from the server's provided list. |out|
3447 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 3448 * The length of the protocol name must be written into |outlen|. The
3449 * server's advertised protocols are provided in |in| and |inlen|. The
3450 * callback can assume that |in| is syntactically valid. The client must
3451 * select a protocol. It is fatal to the connection if this callback returns
3452 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 3453 */
aff8c126 3454void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 3455 SSL_CTX_npn_select_cb_func cb,
aff8c126 3456 void *arg)
0f113f3e 3457{
aff8c126
RS		 3458 ctx->ext.npn_select_cb = cb;
3459 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 3460}
e481f9b9 3461#endif
a398f821 3462
feba11cf
TS		 3463static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3464{
3465 unsigned int idx;
3466
3467 if (protos_len < 2 || protos == NULL)
3468 return 0;
3469
3470 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3471 if (protos[idx] == 0)
3472 return 0;
3473 }
3474 return idx == protos_len;
3475}
0f113f3e
MC		 3476/*
3477 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 3478 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 3479 * length-prefixed strings). Returns 0 on success.
3480 */
3481int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 3482 unsigned int protos_len)
0f113f3e 3483{
feba11cf
TS		 3484 unsigned char *alpn;
3485
3486 if (protos_len == 0 || protos == NULL) {
3487 OPENSSL_free(ctx->ext.alpn);
3488 ctx->ext.alpn = NULL;
39a14059 3489 ctx->ext.alpn_len = 0;
feba11cf
TS		 3490 return 0;
3491 }
3492 /* Not valid per RFC */
3493 if (!alpn_value_ok(protos, protos_len))
3494 return 1;
3495
3496 alpn = OPENSSL_memdup(protos, protos_len);
3497 if (alpn == NULL) {
6849b73c 3498 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3499 return 1;
72e9be3d 3500 }
feba11cf
TS		 3501 OPENSSL_free(ctx->ext.alpn);
3502 ctx->ext.alpn = alpn;
aff8c126 3503 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 3504
3505 return 0;
3506}
3507
3508/*
3509 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 3510 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 3511 * length-prefixed strings). Returns 0 on success.
3512 */
3513int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 3514 unsigned int protos_len)
0f113f3e 3515{
feba11cf 3516 unsigned char *alpn;
38b051a1
TM		 3517 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3518
3519 if (sc == NULL)
3520 return 1;
feba11cf
TS		 3521
3522 if (protos_len == 0 || protos == NULL) {
38b051a1
TM		 3523 OPENSSL_free(sc->ext.alpn);
3524 sc->ext.alpn = NULL;
3525 sc->ext.alpn_len = 0;
feba11cf
TS		 3526 return 0;
3527 }
3528 /* Not valid per RFC */
3529 if (!alpn_value_ok(protos, protos_len))
3530 return 1;
3531
3532 alpn = OPENSSL_memdup(protos, protos_len);
3533 if (alpn == NULL) {
6849b73c 3534 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3535 return 1;
72e9be3d 3536 }
38b051a1
TM		 3537 OPENSSL_free(sc->ext.alpn);
3538 sc->ext.alpn = alpn;
3539 sc->ext.alpn_len = protos_len;
0f113f3e
MC		 3540
3541 return 0;
3542}
3543
3544/*
3545 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3546 * called during ClientHello processing in order to select an ALPN protocol
3547 * from the client's list of offered protocols.
3548 */
3549void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 3550 SSL_CTX_alpn_select_cb_func cb,
3551 void *arg)
0f113f3e 3552{
aff8c126
RS		 3553 ctx->ext.alpn_select_cb = cb;
3554 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 3555}
3556
3557/*
69687aa8
F		 3558 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3559 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 3560 * (not including the leading length-prefix byte). If the server didn't
3561 * respond with a negotiated protocol then |*len| will be zero.
3562 */
6f017a8f 3563void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 3564 unsigned int *len)
0f113f3e 3565{
38b051a1
TM		 3566 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3567
3568 if (sc == NULL) {
3569 /* We have no other way to indicate error */
3570 *data = NULL;
3571 *len = 0;
3572 return;
3573 }
3574
3575 *data = sc->s3.alpn_selected;
0f113f3e
MC		 3576 if (*data == NULL)
3577 *len = 0;
3578 else
38b051a1 3579 *len = (unsigned int)sc->s3.alpn_selected_len;
0f113f3e
MC		 3580}
3581
74b4b494 3582int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 3583 const char *label, size_t llen,
23cec1f4 3584 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 3585 int use_context)
3586{
38b051a1
TM		 3587 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3588
3589 if (sc == NULL)
3590 return -1;
3591
3592 if (sc->session == NULL
3593 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
0f113f3e 3594 return -1;
e0af0405 3595
38b051a1 3596 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
23cec1f4
MC		 3597 llen, context,
3598 contextlen, use_context);
0f113f3e 3599}
e0af0405 3600
b38ede80
TT		 3601int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3602 const char *label, size_t llen,
3603 const unsigned char *context,
3604 size_t contextlen)
3605{
38b051a1
TM		 3606 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3607
3608 if (sc == NULL)
3609 return -1;
3610
3611 if (sc->version != TLS1_3_VERSION)
b38ede80
TT		 3612 return 0;
3613
38b051a1 3614 return tls13_export_keying_material_early(sc, out, olen, label, llen,
b38ede80
TT		 3615 context, contextlen);
3616}
3617
3c1d6bbc 3618static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 3619{
bd5d27c1 3620 const unsigned char *session_id = a->session_id;
0f113f3e 3621 unsigned long l;
bd5d27c1
DB		 3622 unsigned char tmp_storage[4];
3623
3624 if (a->session_id_length < sizeof(tmp_storage)) {
3625 memset(tmp_storage, 0, sizeof(tmp_storage));
3626 memcpy(tmp_storage, a->session_id, a->session_id_length);
3627 session_id = tmp_storage;
3628 }
0f113f3e
MC		 3629
3630 l = (unsigned long)
bd5d27c1
DB		 3631 ((unsigned long)session_id[0]) |
3632 ((unsigned long)session_id[1] << 8L) |
3633 ((unsigned long)session_id[2] << 16L) |
3634 ((unsigned long)session_id[3] << 24L);
26a7d938 3635 return l;
0f113f3e
MC		 3636}
3637
3638/*
3639 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3640 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3641 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3642 * being able to construct an SSL_SESSION that will collide with any existing
3643 * session with a matching session ID.
3644 */
3645static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3646{
3647 if (a->ssl_version != b->ssl_version)
208fb891 3648 return 1;
0f113f3e 3649 if (a->session_id_length != b->session_id_length)
208fb891 3650 return 1;
26a7d938 3651 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3652}
3653
3654/*
3655 * These wrapper functions should remain rather than redeclaring
d0fa136c 3656 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3657 * variable. The reason is that the functions aren't static, they're exposed
3658 * via ssl.h.
3659 */
97b17195 3660
b4250010 3661SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
d8652be0 3662 const SSL_METHOD *meth)
0f113f3e
MC		 3663{
3664 SSL_CTX *ret = NULL;
3665
3666 if (meth == NULL) {
6849b73c 3667 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3668 return NULL;
0f113f3e
MC		 3669 }
3670
0fc32b07
MC		 3671 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3672 return NULL;
7fa792d1 3673
0f113f3e 3674 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
6849b73c 3675 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
0f113f3e
MC		 3676 goto err;
3677 }
b51bce94 3678 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3679 if (ret == NULL)
3680 goto err;
3681
045a8930
F		 3682 /* Init the reference counting before any call to SSL_CTX_free */
3683 ret->references = 1;
3684 ret->lock = CRYPTO_THREAD_lock_new();
3685 if (ret->lock == NULL) {
3686 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3687 OPENSSL_free(ret);
3688 return NULL;
3689 }
3690
acce0557
P		 3691#ifdef TSAN_REQUIRES_LOCKING
3692 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3693 if (ret->tsan_lock == NULL) {
3694 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3695 goto err;
3696 }
3697#endif
3698
ba18627e
MC		 3699 ret->libctx = libctx;
3700 if (propq != NULL) {
3701 ret->propq = OPENSSL_strdup(propq);
3702 if (ret->propq == NULL)
3703 goto err;
3704 }
3705
0f113f3e 3706 ret->method = meth;
7946ab33
KR		 3707 ret->min_proto_version = 0;
3708 ret->max_proto_version = 0;
693cf80c 3709 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3710 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3711 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3712 /* We take the system default. */
0f113f3e 3713 ret->session_timeout = meth->get_timeout();
0f113f3e 3714 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3715 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3716 if ((ret->cert = ssl_cert_new()) == NULL)
3717 goto err;
3718
62d0577e 3719 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3720 if (ret->sessions == NULL)
3721 goto err;
3722 ret->cert_store = X509_STORE_new();
3723 if (ret->cert_store == NULL)
3724 goto err;
ed29e82a 3725#ifndef OPENSSL_NO_CT
d8652be0 3726 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
ed29e82a
RP		 3727 if (ret->ctlog_store == NULL)
3728 goto err;
3729#endif
f865b081 3730
c8f6c28a
MC		 3731 /* initialize cipher/digest methods table */
3732 if (!ssl_load_ciphers(ret))
075b1f2f 3733 goto err2;
263ff2c9
MC		 3734 /* initialise sig algs */
3735 if (!ssl_setup_sig_algs(ret))
3736 goto err2;
3737
c8f6c28a 3738
9d2d857f
MC		 3739 if (!ssl_load_groups(ret))
3740 goto err2;
3741
5d120511 3742 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
f865b081
MC		 3743 goto err;
3744
a68eee67 3745 if (!ssl_create_cipher_list(ret,
f865b081 3746 ret->tls13_ciphersuites,
a230b26e 3747 &ret->cipher_list, &ret->cipher_list_by_id,
5d120511 3748 OSSL_default_cipher_list(), ret->cert)
a230b26e 3749 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
6849b73c 3750 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
0f113f3e
MC		 3751 goto err2;
3752 }
3753
3754 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3755 if (ret->param == NULL)
0f113f3e
MC		 3756 goto err;
3757
c8f6c28a
MC		 3758 /*
3759 * If these aren't available from the provider we'll get NULL returns.
3760 * That's fine but will cause errors later if SSLv3 is negotiated
3761 */
3762 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3763 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
0f113f3e 3764
fa7c2637 3765 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3766 goto err;
3767
98732979
MC		 3768 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3769 goto err;
3770
25a807bc
F		 3771 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3772 goto err;
0f113f3e 3773
4bfb96f2
TS		 3774 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3775 goto err;
3776
0f113f3e
MC		 3777 /* No compression for DTLS */
3778 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3779 ret->comp_methods = SSL_COMP_get_compression_methods();
3780
3781 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3782 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3783
4e2e1ec9 3784 /* Setup RFC5077 ticket keys */
8f21260b 3785 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
0f8815aa 3786 sizeof(ret->ext.tick_key_name), 0) <= 0)
8f21260b 3787 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
0f8815aa 3788 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
8f21260b 3789 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
0f8815aa 3790 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
0f113f3e 3791 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3792
8f21260b 3793 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
0f8815aa 3794 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
43054d3d
MC		 3795 goto err;
3796
edc032b5 3797#ifndef OPENSSL_NO_SRP
76cb077f 3798 if (!ssl_ctx_srp_ctx_init_intern(ret))
69f68237 3799 goto err;
edc032b5 3800#endif
4db9677b 3801#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3802# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3803# define eng_strx(x) #x
3804# define eng_str(x) eng_strx(x)
3805 /* Use specific client engine automatically... ignore errors */
3806 {
3807 ENGINE *eng;
3808 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3809 if (!eng) {
3810 ERR_clear_error();
3811 ENGINE_load_builtin_engines();
3812 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3813 }
3814 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3815 ERR_clear_error();
3816 }
3817# endif
3818#endif
dc5744cb
EK		 3819 /*
3820 * Disable compression by default to prevent CRIME. Applications can
3821 * re-enable compression by configuring
3822 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3823 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3824 * middlebox compatibility by default. This may be disabled by default in
3825 * a later OpenSSL version.
dc5744cb 3826 */
a5816a5a 3827 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3828
aff8c126 3829 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3830
bfa9a9af 3831 /*
c39e4048
BK		 3832 * We cannot usefully set a default max_early_data here (which gets
3833 * propagated in SSL_new(), for the following reason: setting the
3834 * SSL field causes tls_construct_stoc_early_data() to tell the
3835 * client that early data will be accepted when constructing a TLS 1.3
3836 * session ticket, and the client will accordingly send us early data
3837 * when using that ticket (if the client has early data to send).
3838 * However, in order for the early data to actually be consumed by
3839 * the application, the application must also have calls to
3840 * SSL_read_early_data(); otherwise we'll just skip past the early data
3841 * and ignore it. So, since the application must add calls to
3842 * SSL_read_early_data(), we also require them to add
3843 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3844 * eliminating the bandwidth-wasting early data in the case described
3845 * above.
bfa9a9af 3846 */
c39e4048 3847 ret->max_early_data = 0;
bfa9a9af 3848
4e8548e8
MC		 3849 /*
3850 * Default recv_max_early_data is a fully loaded single record. Could be
3851 * split across multiple records in practice. We set this differently to
3852 * max_early_data so that, in the default case, we do not advertise any
3853 * support for early_data, but if a client were to send us some (e.g.
3854 * because of an old, stale ticket) then we will tolerate it and skip over
3855 * it.
3856 */
3857 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3858
36ff232c
MC		 3859 /* By default we send two session tickets automatically in TLSv1.3 */
3860 ret->num_tickets = 2;
9d0a8bb7 3861
8a5ed9dc
TM		 3862 ssl_ctx_system_config(ret);
3863
16203f7b 3864 return ret;
0f113f3e 3865 err:
6849b73c 3866 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
0f113f3e 3867 err2:
e0e920b1 3868 SSL_CTX_free(ret);
16203f7b 3869 return NULL;
0f113f3e 3870}
d02b48c6 3871
ba18627e
MC		 3872SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3873{
d8652be0 3874 return SSL_CTX_new_ex(NULL, NULL, meth);
ba18627e
MC		 3875}
3876
c5ebfcab 3877int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3878{
16203f7b 3879 int i;
c5ebfcab 3880
2f545ae4 3881 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3882 return 0;
3883
3884 REF_PRINT_COUNT("SSL_CTX", ctx);
3885 REF_ASSERT_ISNT(i < 2);
3886 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3887}
3888
4f43d0e7 3889void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3890{
3891 int i;
9d2d857f 3892 size_t j;
d02b48c6 3893
0f113f3e
MC		 3894 if (a == NULL)
3895 return;
d02b48c6 3896
2f545ae4 3897 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3898 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3899 if (i > 0)
3900 return;
f3f1cf84 3901 REF_ASSERT_ISNT(i < 0);
0f113f3e 3902
222561fe 3903 X509_VERIFY_PARAM_free(a->param);
919ba009 3904 dane_ctx_final(&a->dane);
0f113f3e
MC		 3905
3906 /*
3907 * Free internal session cache. However: the remove_cb() may reference
3908 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3909 * after the sessions were flushed.
3910 * As the ex_data handling routines might also touch the session cache,
3911 * the most secure solution seems to be: empty (flush) the cache, then
3912 * free ex_data, then finally free the cache.
3913 * (See ticket [openssl.org #212].)
3914 */
3915 if (a->sessions != NULL)
3916 SSL_CTX_flush_sessions(a, 0);
3917
3918 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3919 lh_SSL_SESSION_free(a->sessions);
222561fe 3920 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3921#ifndef OPENSSL_NO_CT
3922 CTLOG_STORE_free(a->ctlog_store);
3923#endif
25aaa98a
RS		 3924 sk_SSL_CIPHER_free(a->cipher_list);
3925 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3926 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3927 ssl_cert_free(a->cert);
fa7c2637 3928 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3929 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
79b2a2f2 3930 OSSL_STACK_OF_X509_free(a->extra_certs);
0f113f3e 3931 a->comp_methods = NULL;
e783bae2 3932#ifndef OPENSSL_NO_SRTP
25aaa98a 3933 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3934#endif
edc032b5 3935#ifndef OPENSSL_NO_SRP
76cb077f 3936 ssl_ctx_srp_ctx_free_intern(a);
edc032b5 3937#endif
bdfe932d 3938#ifndef OPENSSL_NO_ENGINE
301fcb28 3939 tls_engine_finish(a->client_cert_engine);
ddac1974 3940#endif
8671b898 3941
aff8c126 3942 OPENSSL_free(a->ext.ecpointformats);
187753e0 3943 OPENSSL_free(a->ext.supportedgroups);
ddf8f1ce 3944 OPENSSL_free(a->ext.supported_groups_default);
aff8c126 3945 OPENSSL_free(a->ext.alpn);
4bfb96f2 3946 OPENSSL_secure_free(a->ext.secure);
8671b898 3947
c8f6c28a
MC		 3948 ssl_evp_md_free(a->md5);
3949 ssl_evp_md_free(a->sha1);
3950
9d2d857f
MC		 3951 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3952 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3953 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3954 ssl_evp_md_free(a->ssl_digest_methods[j]);
3955 for (j = 0; j < a->group_list_len; j++) {
3956 OPENSSL_free(a->group_list[j].tlsname);
3957 OPENSSL_free(a->group_list[j].realname);
3958 OPENSSL_free(a->group_list[j].algorithm);
3959 }
3960 OPENSSL_free(a->group_list);
c8f6c28a 3961
263ff2c9
MC		 3962 OPENSSL_free(a->sigalg_lookup_cache);
3963
16203f7b 3964 CRYPTO_THREAD_lock_free(a->lock);
acce0557
P		 3965#ifdef TSAN_REQUIRES_LOCKING
3966 CRYPTO_THREAD_lock_free(a->tsan_lock);
3967#endif
16203f7b 3968
ba18627e
MC		 3969 OPENSSL_free(a->propq);
3970
0f113f3e
MC		 3971 OPENSSL_free(a);
3972}
d02b48c6 3973
3ae76679 3974void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3975{
3976 ctx->default_passwd_callback = cb;
3977}
3978
3979void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3980{
3981 ctx->default_passwd_callback_userdata = u;
3982}
3983
0c452abc
CH		 3984pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3985{
3986 return ctx->default_passwd_callback;
3987}
3988
3989void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3990{
3991 return ctx->default_passwd_callback_userdata;
3992}
3993
a974e64a
MC		 3994void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3995{
38b051a1
TM		 3996 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3997
3998 if (sc == NULL)
3999 return;
4000
4001 sc->default_passwd_callback = cb;
a974e64a
MC		 4002}
4003
4004void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4005{
38b051a1
TM		 4006 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4007
4008 if (sc == NULL)
4009 return;
4010
4011 sc->default_passwd_callback_userdata = u;
a974e64a
MC		 4012}
4013
0c452abc
CH		 4014pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4015{
38b051a1
TM		 4016 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4017
4018 if (sc == NULL)
4019 return NULL;
4020
4021 return sc->default_passwd_callback;
0c452abc
CH		 4022}
4023
4024void *SSL_get_default_passwd_cb_userdata(SSL *s)
4025{
38b051a1
TM		 4026 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4027
4028 if (sc == NULL)
4029 return NULL;
4030
4031 return sc->default_passwd_callback_userdata;
0c452abc
CH		 4032}
4033
0f113f3e
MC		 4034void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4035 int (*cb) (X509_STORE_CTX *, void *),
4036 void *arg)
4037{
4038 ctx->app_verify_callback = cb;
4039 ctx->app_verify_arg = arg;
4040}
4041
4042void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4043 int (*cb) (int, X509_STORE_CTX *))
4044{
4045 ctx->verify_mode = mode;
4046 ctx->default_verify_callback = cb;
4047}
4048
4049void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4050{
4051 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4052}
4053
a230b26e 4054void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 4055{
4056 ssl_cert_set_cert_cb(c->cert, cb, arg);
4057}
4058
4059void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4060{
38b051a1
TM		 4061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4062
4063 if (sc == NULL)
4064 return;
4065
4066 ssl_cert_set_cert_cb(sc->cert, cb, arg);
0f113f3e 4067}
18d71588 4068
38b051a1 4069void ssl_set_masks(SSL_CONNECTION *s)
0f113f3e 4070{
6383d316 4071 CERT *c = s->cert;
555cbb32 4072 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 4073 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 4074 unsigned long mask_k, mask_a;
361a1191 4075 int have_ecc_cert, ecdsa_ok;
462f4f4b 4076
0f113f3e
MC		 4077 if (c == NULL)
4078 return;
d02b48c6 4079
13c45372 4080 dh_tmp = (c->dh_tmp != NULL
13c45372 4081 || c->dh_tmp_cb != NULL
13c45372 4082 || c->dh_tmp_auto);
d02b48c6 4083
d0ff28f8 4084 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 4085 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4086 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
6383d316 4087 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
0f113f3e
MC		 4088 mask_k = 0;
4089 mask_a = 0;
0e1dba93 4090
77359d22
RL		 4091 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4092 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 4093
2a9b9654 4094#ifndef OPENSSL_NO_GOST
4020c0b3 4095 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
5a5530a2 4096 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 4097 mask_a |= SSL_aGOST12;
4098 }
4020c0b3 4099 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
5a5530a2 4100 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 4101 mask_a |= SSL_aGOST12;
4102 }
4020c0b3 4103 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 4104 mask_k |= SSL_kGOST;
4105 mask_a |= SSL_aGOST01;
4106 }
2a9b9654 4107#endif
0f113f3e 4108
361a1191 4109 if (rsa_enc)
0f113f3e 4110 mask_k |= SSL_kRSA;
d02b48c6 4111
0f113f3e
MC		 4112 if (dh_tmp)
4113 mask_k |= SSL_kDHE;
d02b48c6 4114
6aaa29fb
DSH		 4115 /*
4116 * If we only have an RSA-PSS certificate allow RSA authentication
4117 * if TLS 1.2 and peer supports it.
4118 */
4119
4120 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4121 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
38b051a1 4122 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
0f113f3e 4123 mask_a |= SSL_aRSA;
d02b48c6 4124
0f113f3e
MC		 4125 if (dsa_sign) {
4126 mask_a |= SSL_aDSS;
0f113f3e 4127 }
d02b48c6 4128
0f113f3e 4129 mask_a |= SSL_aNULL;
d02b48c6 4130
0f113f3e
MC		 4131 /*
4132 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4133 * depending on the key usage extension.
4134 */
0f113f3e 4135 if (have_ecc_cert) {
a8d8e06b 4136 uint32_t ex_kusage;
4020c0b3 4137 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 4138 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 4139 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 4140 ecdsa_ok = 0;
c7c46256 4141 if (ecdsa_ok)
0f113f3e 4142 mask_a |= SSL_aECDSA;
0f113f3e 4143 }
b2021556
DSH		 4144 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4145 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4146 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
38b051a1 4147 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
b2021556 4148 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 4149
4150 /* Allow Ed448 for TLS 1.2 if peer supports it */
4151 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4152 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
38b051a1 4153 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
0e1d6ecf 4154 mask_a |= SSL_aECDSA;
ea262260 4155
fe6ef247 4156 mask_k |= SSL_kECDHE;
ddac1974
NL		 4157
4158#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 4159 mask_k |= SSL_kPSK;
4160 mask_a |= SSL_aPSK;
526f94ad
DSH		 4161 if (mask_k & SSL_kRSA)
4162 mask_k |= SSL_kRSAPSK;
4163 if (mask_k & SSL_kDHE)
4164 mask_k |= SSL_kDHEPSK;
4165 if (mask_k & SSL_kECDHE)
4166 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 4167#endif
4168
555cbb32
TS		 4169 s->s3.tmp.mask_k = mask_k;
4170 s->s3.tmp.mask_a = mask_a;
0f113f3e 4171}
d02b48c6 4172
38b051a1 4173int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
0f113f3e 4174{
555cbb32 4175 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 4176 /* key usage, if present, must allow signing */
ce0c1f2b 4177 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
6849b73c 4178 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
0f113f3e
MC		 4179 return 0;
4180 }
4181 }
0f113f3e
MC		 4182 return 1; /* all checks are ok */
4183}
ea262260 4184
38b051a1
TM		 4185int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4186 const unsigned char **serverinfo,
0f113f3e
MC		 4187 size_t *serverinfo_length)
4188{
555cbb32 4189 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 4190 *serverinfo_length = 0;
4191
a497cf25 4192 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 4193 return 0;
4194
a497cf25
DSH		 4195 *serverinfo = cpk->serverinfo;
4196 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 4197 return 1;
4198}
0f113f3e 4199
38b051a1 4200void ssl_update_cache(SSL_CONNECTION *s, int mode)
0f113f3e
MC		 4201{
4202 int i;
4203
4204 /*
4205 * If the session_id_length is 0, we are not supposed to cache it, and it
4206 * would be rather hard to do anyway :-)
4207 */
4208 if (s->session->session_id_length == 0)
4209 return;
4210
d316cdcf
BK		 4211 /*
4212 * If sid_ctx_length is 0 there is no specific application context
4213 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 4214 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4215 * indication that this is actually a session for the proper application
4216 * context, and the *handshake* will fail, not just the resumption attempt.
4217 * Do not cache (on the server) these sessions that are not resumable
4218 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 4219 */
c4fa1f7f 4220 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 4221 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4222 return;
4223
0f113f3e 4224 i = s->session_ctx->session_cache_mode;
5d61491c 4225 if ((i & mode) != 0
38b051a1 4226 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
ee94ec2e
MC		 4227 /*
4228 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 4229 * normally don't do this because by default it's a full stateless ticket
4230 * with only a dummy session id so there is no reason to cache it,
4231 * unless:
ee94ec2e
MC		 4232 * - we are doing early_data, in which case we cache so that we can
4233 * detect replays
4234 * - the application has set a remove_session_cb so needs to know about
4235 * session timeout events
6cc0b3c2 4236 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 4237 */
4238 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
38b051a1 4239 && (!SSL_CONNECTION_IS_TLS13(s)
ee94ec2e 4240 || !s->server
5d263fb7
MC		 4241 || (s->max_early_data > 0
4242 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 4243 || s->session_ctx->remove_session_cb != NULL
4244 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 4245 SSL_CTX_add_session(s->session_ctx, s->session);
4246
4247 /*
4248 * Add the session to the external cache. We do this even in server side
4249 * TLSv1.3 without early data because some applications just want to
4250 * know about the creation of a session and aren't doing a full cache.
4251 */
4252 if (s->session_ctx->new_session_cb != NULL) {
4253 SSL_SESSION_up_ref(s->session);
38b051a1
TM		 4254 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4255 s->session))
ee94ec2e
MC		 4256 SSL_SESSION_free(s->session);
4257 }
0f113f3e
MC		 4258 }
4259
4260 /* auto flush every 255 connections */
4261 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 4262 TSAN_QUALIFIER int *stat;
acce0557 4263
1fcb4e4d
BK		 4264 if (mode & SSL_SESS_CACHE_CLIENT)
4265 stat = &s->session_ctx->stats.sess_connect_good;
4266 else
4267 stat = &s->session_ctx->stats.sess_accept_good;
acce0557 4268 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
0f113f3e 4269 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 4270 }
4271}
d02b48c6 4272
3499327b 4273const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 4274{
4275 return ctx->method;
4276}
ba168244 4277
3499327b 4278const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 4279{
26a7d938 4280 return s->method;
0f113f3e 4281}
d02b48c6 4282
4ebb342f 4283int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 4284{
0f113f3e 4285 int ret = 1;
38b051a1
TM		 4286 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4287
4288 /* TODO(QUIC): Do we want this for QUIC? */
4289 if (sc == NULL
4290 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4291 return 0;
0f113f3e
MC		 4292
4293 if (s->method != meth) {
919ba009 4294 const SSL_METHOD *sm = s->method;
38b051a1 4295 int (*hf) (SSL *) = sc->handshake_func;
0f113f3e 4296
919ba009 4297 if (sm->version == meth->version)
0f113f3e
MC		 4298 s->method = meth;
4299 else {
38b051a1 4300 sm->ssl_deinit(s);
0f113f3e 4301 s->method = meth;
38b051a1 4302 ret = s->method->ssl_init(s);
0f113f3e
MC		 4303 }
4304
919ba009 4305 if (hf == sm->ssl_connect)
38b051a1 4306 sc->handshake_func = meth->ssl_connect;
919ba009 4307 else if (hf == sm->ssl_accept)
38b051a1 4308 sc->handshake_func = meth->ssl_accept;
0f113f3e 4309 }
26a7d938 4310 return ret;
0f113f3e
MC		 4311}
4312
4313int SSL_get_error(const SSL *s, int i)
4314{
4315 int reason;
4316 unsigned long l;
4317 BIO *bio;
38b051a1 4318 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
0f113f3e
MC		 4319
4320 if (i > 0)
26a7d938 4321 return SSL_ERROR_NONE;
0f113f3e 4322
38b051a1
TM		 4323 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4324 if (sc == NULL)
4325 return SSL_ERROR_SSL;
4326
0f113f3e
MC		 4327 /*
4328 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4329 * where we do encode the error
4330 */
4331 if ((l = ERR_peek_error()) != 0) {
4332 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 4333 return SSL_ERROR_SYSCALL;
0f113f3e 4334 else
26a7d938 4335 return SSL_ERROR_SSL;
0f113f3e
MC		 4336 }
4337
8051ab2b
MC		 4338 if (SSL_want_read(s)) {
4339 bio = SSL_get_rbio(s);
4340 if (BIO_should_read(bio))
26a7d938 4341 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 4342 else if (BIO_should_write(bio))
4343 /*
4344 * This one doesn't make too much sense ... We never try to write
4345 * to the rbio, and an application program where rbio and wbio
4346 * are separate couldn't even know what it should wait for.
4347 * However if we ever set s->rwstate incorrectly (so that we have
4348 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4349 * wbio *are* the same, this test works around that bug; so it
4350 * might be safer to keep it.
4351 */
26a7d938 4352 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 4353 else if (BIO_should_io_special(bio)) {
4354 reason = BIO_get_retry_reason(bio);
4355 if (reason == BIO_RR_CONNECT)
26a7d938 4356 return SSL_ERROR_WANT_CONNECT;
8051ab2b 4357 else if (reason == BIO_RR_ACCEPT)
26a7d938 4358 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 4359 else
26a7d938 4360 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 4361 }
8051ab2b 4362 }
0f113f3e 4363
8051ab2b 4364 if (SSL_want_write(s)) {
69687aa8 4365 /* Access wbio directly - in order to use the buffered bio if present */
38b051a1 4366 bio = sc->wbio;
8051ab2b 4367 if (BIO_should_write(bio))
26a7d938 4368 return SSL_ERROR_WANT_WRITE;
8051ab2b 4369 else if (BIO_should_read(bio))
2e7dc7cd 4370 /*
8051ab2b 4371 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 4372 */
26a7d938 4373 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 4374 else if (BIO_should_io_special(bio)) {
4375 reason = BIO_get_retry_reason(bio);
4376 if (reason == BIO_RR_CONNECT)
26a7d938 4377 return SSL_ERROR_WANT_CONNECT;
8051ab2b 4378 else if (reason == BIO_RR_ACCEPT)
26a7d938 4379 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 4380 else
26a7d938 4381 return SSL_ERROR_SYSCALL;
0f113f3e 4382 }
07bbc92c 4383 }
6b1bb98f 4384 if (SSL_want_x509_lookup(s))
26a7d938 4385 return SSL_ERROR_WANT_X509_LOOKUP;
0c3eb279
DDO		 4386 if (SSL_want_retry_verify(s))
4387 return SSL_ERROR_WANT_RETRY_VERIFY;
6b1bb98f 4388 if (SSL_want_async(s))
8051ab2b 4389 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 4390 if (SSL_want_async_job(s))
8051ab2b 4391 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 4392 if (SSL_want_client_hello_cb(s))
4393 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b 4394
38b051a1
TM		 4395 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4396 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 4397 return SSL_ERROR_ZERO_RETURN;
8051ab2b 4398
26a7d938 4399 return SSL_ERROR_SYSCALL;
0f113f3e 4400}
d02b48c6 4401
add2f5ca
MC		 4402static int ssl_do_handshake_intern(void *vargs)
4403{
38b051a1
TM		 4404 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4405 SSL *s = args->s;
4406 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
add2f5ca 4407
38b051a1
TM		 4408 if (sc == NULL)
4409 return -1;
add2f5ca 4410
38b051a1 4411 return sc->handshake_func(s);
add2f5ca
MC		 4412}
4413
4f43d0e7 4414int SSL_do_handshake(SSL *s)
0f113f3e
MC		 4415{
4416 int ret = 1;
38b051a1
TM		 4417 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4418
4419 /* TODO(QUIC): Special handling for QUIC will be needed */
4420 if (sc == NULL)
4421 return -1;
0f113f3e 4422
38b051a1 4423 if (sc->handshake_func == NULL) {
6849b73c 4424 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 4425 return -1;
0f113f3e
MC		 4426 }
4427
38b051a1 4428 ossl_statem_check_finish_init(sc, -1);
49e7fe12 4429
c7f47786 4430 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 4431
4432 if (SSL_in_init(s) || SSL_in_before(s)) {
38b051a1 4433 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 4434 struct ssl_async_args args;
4435
09134f18 4436 memset(&args, 0, sizeof(args));
add2f5ca
MC		 4437 args.s = s;
4438
7fecbf6f 4439 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca 4440 } else {
38b051a1 4441 ret = sc->handshake_func(s);
add2f5ca 4442 }
0f113f3e 4443 }
add2f5ca 4444 return ret;
0f113f3e
MC		 4445}
4446
4f43d0e7 4447void SSL_set_accept_state(SSL *s)
0f113f3e 4448{
38b051a1
TM		 4449 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4450
4451 /* TODO(QUIC): Special handling for QUIC will be needed */
4452 if (sc == NULL)
4453 return;
4454
4455 sc->server = 1;
4456 sc->shutdown = 0;
4457 ossl_statem_clear(sc);
4458 sc->handshake_func = s->method->ssl_accept;
4459 clear_ciphers(sc);
0f113f3e 4460}
d02b48c6 4461
4f43d0e7 4462void SSL_set_connect_state(SSL *s)
0f113f3e 4463{
38b051a1
TM		 4464 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4465
4466 /* TODO(QUIC): Special handling for QUIC will be needed */
4467 if (sc == NULL)
4468 return;
4469
4470 sc->server = 0;
4471 sc->shutdown = 0;
4472 ossl_statem_clear(sc);
4473 sc->handshake_func = s->method->ssl_connect;
4474 clear_ciphers(sc);
0f113f3e 4475}
d02b48c6 4476
4f43d0e7 4477int ssl_undefined_function(SSL *s)
0f113f3e 4478{
6849b73c 4479 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 4480 return 0;
0f113f3e 4481}
d02b48c6 4482
41a15c4f 4483int ssl_undefined_void_function(void)
0f113f3e 4484{
6849b73c 4485 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 4486 return 0;
0f113f3e 4487}
41a15c4f 4488
0821bcd4 4489int ssl_undefined_const_function(const SSL *s)
0f113f3e 4490{
26a7d938 4491 return 0;
0f113f3e 4492}
0821bcd4 4493
2b8fa1d5 4494const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e 4495{
6849b73c 4496 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 4497 return NULL;
0f113f3e 4498}
d02b48c6 4499
3eb2aff4 4500const char *ssl_protocol_to_string(int version)
7d650072 4501{
1287dabd 4502 switch (version)
2abacef1
MC		 4503 {
4504 case TLS1_3_VERSION:
582a17d6 4505 return "TLSv1.3";
2abacef1
MC		 4506
4507 case TLS1_2_VERSION:
7d650072 4508 return "TLSv1.2";
2abacef1
MC		 4509
4510 case TLS1_1_VERSION:
7d650072 4511 return "TLSv1.1";
2abacef1
MC		 4512
4513 case TLS1_VERSION:
ee3a6c64 4514 return "TLSv1";
2abacef1
MC		 4515
4516 case SSL3_VERSION:
7d650072 4517 return "SSLv3";
2abacef1
MC		 4518
4519 case DTLS1_BAD_VER:
7d650072 4520 return "DTLSv0.9";
2abacef1
MC		 4521
4522 case DTLS1_VERSION:
7d650072 4523 return "DTLSv1";
2abacef1
MC		 4524
4525 case DTLS1_2_VERSION:
7d650072 4526 return "DTLSv1.2";
2abacef1
MC		 4527
4528 default:
4529 return "unknown";
4530 }
0f113f3e 4531}
d02b48c6 4532
7d650072
KR		 4533const char *SSL_get_version(const SSL *s)
4534{
38b051a1
TM		 4535 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4536
4537 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4538 if (sc == NULL)
4539 return NULL;
4540
4541 return ssl_protocol_to_string(sc->version);
7d650072
KR		 4542}
4543
98732979 4544static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 4545{
4546 STACK_OF(X509_NAME) *sk;
4547 X509_NAME *xn;
98732979
MC		 4548 int i;
4549
4550 if (src == NULL) {
4551 *dst = NULL;
4552 return 1;
4553 }
4554
4555 if ((sk = sk_X509_NAME_new_null()) == NULL)
4556 return 0;
4557 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4558 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4559 if (xn == NULL) {
4560 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4561 return 0;
4562 }
4563 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4564 X509_NAME_free(xn);
4565 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4566 return 0;
4567 }
4568 }
4569 *dst = sk;
4570
4571 return 1;
4572}
4573
4574SSL *SSL_dup(SSL *s)
4575{
0f113f3e
MC		 4576 SSL *ret;
4577 int i;
38b051a1
TM		 4578 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4579 SSL_CONNECTION *retsc;
4580 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4581
4582 if (sc == NULL)
4583 return NULL;
0f113f3e 4584
919ba009
VD		 4585 /* If we're not quiescent, just up_ref! */
4586 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 4587 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 4588 return s;
4589 }
4590
4591 /*
4592 * Otherwise, copy configuration state, and session if set.
4593 */
0f113f3e 4594 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 4595 return NULL;
38b051a1
TM		 4596 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4597 goto err;
0f113f3e 4598
38b051a1 4599 if (sc->session != NULL) {
919ba009
VD		 4600 /*
4601 * Arranges to share the same session via up_ref. This "copies"
4602 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4603 */
61986d32 4604 if (!SSL_copy_session_id(ret, s))
17dd65e6 4605 goto err;
0f113f3e
MC		 4606 } else {
4607 /*
4608 * No session has been established yet, so we have to expect that
4609 * s->cert or ret->cert will be changed later -- they should not both
4610 * point to the same object, and thus we can't use
4611 * SSL_copy_session_id.
4612 */
919ba009
VD		 4613 if (!SSL_set_ssl_method(ret, s->method))
4614 goto err;
0f113f3e 4615
38b051a1
TM		 4616 if (sc->cert != NULL) {
4617 ssl_cert_free(retsc->cert);
4618 retsc->cert = ssl_cert_dup(sc->cert);
4619 if (retsc->cert == NULL)
0f113f3e
MC		 4620 goto err;
4621 }
4622
38b051a1
TM		 4623 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4624 (int)sc->sid_ctx_length))
69f68237 4625 goto err;
0f113f3e
MC		 4626 }
4627
38b051a1 4628 if (!ssl_dane_dup(retsc, sc))
9f6b22b8 4629 goto err;
38b051a1
TM		 4630 retsc->version = sc->version;
4631 retsc->options = sc->options;
4632 retsc->min_proto_version = sc->min_proto_version;
4633 retsc->max_proto_version = sc->max_proto_version;
4634 retsc->mode = sc->mode;
0f113f3e
MC		 4635 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4636 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
38b051a1
TM		 4637 retsc->msg_callback = sc->msg_callback;
4638 retsc->msg_callback_arg = sc->msg_callback_arg;
0f113f3e
MC		 4639 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4640 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
38b051a1 4641 retsc->generate_session_id = sc->generate_session_id;
0f113f3e
MC		 4642
4643 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4644
0f113f3e
MC		 4645 /* copy app data, a little dangerous perhaps */
4646 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4647 goto err;
4648
38b051a1
TM		 4649 retsc->server = sc->server;
4650 if (sc->handshake_func) {
4651 if (sc->server)
919ba009
VD		 4652 SSL_set_accept_state(ret);
4653 else
4654 SSL_set_connect_state(ret);
4655 }
38b051a1
TM		 4656 retsc->shutdown = sc->shutdown;
4657 retsc->hit = sc->hit;
0f113f3e 4658
38b051a1
TM		 4659 retsc->default_passwd_callback = sc->default_passwd_callback;
4660 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
a974e64a 4661
38b051a1 4662 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
0f113f3e
MC		 4663
4664 /* dup the cipher_list and cipher_list_by_id stacks */
38b051a1
TM		 4665 if (sc->cipher_list != NULL) {
4666 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
0f113f3e
MC		 4667 goto err;
4668 }
38b051a1
TM		 4669 if (sc->cipher_list_by_id != NULL)
4670 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
0f113f3e
MC		 4671 == NULL)
4672 goto err;
4673
4674 /* Dup the client_CA list */
38b051a1
TM		 4675 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4676 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
98732979
MC		 4677 goto err;
4678
66696478 4679 return ret;
0f113f3e 4680
0f113f3e 4681 err:
66696478
RS		 4682 SSL_free(ret);
4683 return NULL;
0f113f3e 4684}
d02b48c6 4685
38b051a1 4686void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
0f113f3e
MC		 4687{
4688 if (s->enc_read_ctx != NULL) {
846ec07d 4689 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 4690 s->enc_read_ctx = NULL;
4691 }
4692 if (s->enc_write_ctx != NULL) {
846ec07d 4693 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 4694 s->enc_write_ctx = NULL;
4695 }
09b6c2ef 4696#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 4697 COMP_CTX_free(s->expand);
4698 s->expand = NULL;
4699 COMP_CTX_free(s->compress);
4700 s->compress = NULL;
0f113f3e
MC		 4701#endif
4702}
d02b48c6 4703
0821bcd4 4704X509 *SSL_get_certificate(const SSL *s)
0f113f3e 4705{
38b051a1
TM		 4706 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4707
4708 if (sc == NULL)
4709 return NULL;
4710
4711 if (sc->cert != NULL)
4712 return sc->cert->key->x509;
0f113f3e 4713 else
26a7d938 4714 return NULL;
0f113f3e 4715}
d02b48c6 4716
a25f9adc 4717EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e 4718{
38b051a1
TM		 4719 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4720
4721 if (sc == NULL)
4722 return NULL;
4723
4724 if (sc->cert != NULL)
4725 return sc->cert->key->privatekey;
0f113f3e 4726 else
26a7d938 4727 return NULL;
0f113f3e 4728}
d02b48c6 4729
a25f9adc 4730X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 4731{
4732 if (ctx->cert != NULL)
4733 return ctx->cert->key->x509;
4734 else
4735 return NULL;
4736}
a25f9adc
DSH		 4737
4738EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4739{
4740 if (ctx->cert != NULL)
4741 return ctx->cert->key->privatekey;
4742 else
4743 return NULL;
4744}
a25f9adc 4745
babb3798 4746const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e 4747{
38b051a1
TM		 4748 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4749
4750 if (sc == NULL)
4751 return NULL;
4752
4753 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4754 return sc->session->cipher;
26a7d938 4755 return NULL;
0f113f3e
MC		 4756}
4757
0aed6e44
BK		 4758const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4759{
38b051a1
TM		 4760 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4761
4762 if (sc == NULL)
4763 return NULL;
4764
4765 return sc->s3.tmp.new_cipher;
0aed6e44
BK		 4766}
4767
3499327b 4768const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4769{
9a555706 4770#ifndef OPENSSL_NO_COMP
38b051a1
TM		 4771 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4772
4773 if (sc == NULL)
4774 return NULL;
4775
4776 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
9a555706
RS		 4777#else
4778 return NULL;
4779#endif
0f113f3e 4780}
377dcdba 4781
3499327b 4782const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4783{
9a555706 4784#ifndef OPENSSL_NO_COMP
38b051a1
TM		 4785 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4786
4787 if (sc == NULL)
4788 return NULL;
4789
4790 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
9a555706
RS		 4791#else
4792 return NULL;
0f113f3e 4793#endif
9a555706 4794}
0f113f3e 4795
38b051a1 4796int ssl_init_wbio_buffer(SSL_CONNECTION *s)
0f113f3e
MC		 4797{
4798 BIO *bbio;
4799
2e7dc7cd
MC		 4800 if (s->bbio != NULL) {
4801 /* Already buffered. */
4802 return 1;
0f113f3e 4803 }
46417569 4804
2e7dc7cd
MC		 4805 bbio = BIO_new(BIO_f_buffer());
4806 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4807 BIO_free(bbio);
6849b73c 4808 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
46417569 4809 return 0;
0f113f3e 4810 }
2e7dc7cd
MC		 4811 s->bbio = bbio;
4812 s->wbio = BIO_push(bbio, s->wbio);
46417569 4813
b5cf81f7
MC		 4814 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4815
46417569 4816 return 1;
0f113f3e 4817}
413c4f45 4818
38b051a1 4819int ssl_free_wbio_buffer(SSL_CONNECTION *s)
0f113f3e 4820{
62adbcee 4821 /* callers ensure s is never null */
0f113f3e 4822 if (s->bbio == NULL)
b77f3ed1 4823 return 1;
0f113f3e 4824
2e7dc7cd 4825 s->wbio = BIO_pop(s->wbio);
b5cf81f7
MC		 4826 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4827
0f113f3e
MC		 4828 BIO_free(s->bbio);
4829 s->bbio = NULL;
b77f3ed1
MC		 4830
4831 return 1;
0f113f3e
MC		 4832}
4833
4834void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4835{
4836 ctx->quiet_shutdown = mode;
4837}
58964a49 4838
0821bcd4 4839int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4840{
26a7d938 4841 return ctx->quiet_shutdown;
0f113f3e 4842}
58964a49 4843
0f113f3e
MC		 4844void SSL_set_quiet_shutdown(SSL *s, int mode)
4845{
38b051a1
TM		 4846 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4847
4848 /* TODO(QUIC): Do we want this for QUIC? */
4849 if (sc == NULL)
4850 return;
4851
4852 sc->quiet_shutdown = mode;
0f113f3e 4853}
58964a49 4854
0821bcd4 4855int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4856{
38b051a1
TM		 4857 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4858
4859 /* TODO(QUIC): Do we want this for QUIC? */
4860 if (sc == NULL)
4861 return 0;
4862
4863 return sc->quiet_shutdown;
0f113f3e 4864}
58964a49 4865
0f113f3e
MC		 4866void SSL_set_shutdown(SSL *s, int mode)
4867{
38b051a1
TM		 4868 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4869
4870 /* TODO(QUIC): Do we want this for QUIC? */
4871 if (sc == NULL)
4872 return;
4873
4874 sc->shutdown = mode;
0f113f3e 4875}
58964a49 4876
0821bcd4 4877int SSL_get_shutdown(const SSL *s)
0f113f3e 4878{
38b051a1
TM		 4879 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4880
4881 /* TODO(QUIC): Do we want this for QUIC? */
4882 if (sc == NULL)
4883 return 0;
4884
4885 return sc->shutdown;
0f113f3e 4886}
58964a49 4887
0821bcd4 4888int SSL_version(const SSL *s)
0f113f3e 4889{
38b051a1
TM		 4890 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4891
4892 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4893 if (sc == NULL)
4894 return 0;
4895
4896 return sc->version;
6546e9b2
AG		 4897}
4898
4899int SSL_client_version(const SSL *s)
4900{
38b051a1
TM		 4901 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4902
4903 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4904 if (sc == NULL)
4905 return 0;
4906
4907 return sc->client_version;
0f113f3e 4908}
58964a49 4909
0821bcd4 4910SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4911{
6546e9b2 4912 return ssl->ctx;
0f113f3e
MC		 4913}
4914
4915SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4916{
24a0d393 4917 CERT *new_cert;
38b051a1
TM		 4918 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4919
4920 /* TODO(QUIC): Do we need this for QUIC support? */
4921 if (sc == NULL)
4922 return NULL;
4923
0f113f3e
MC		 4924 if (ssl->ctx == ctx)
4925 return ssl->ctx;
0f113f3e 4926 if (ctx == NULL)
38b051a1 4927 ctx = sc->session_ctx;
24a0d393
KR		 4928 new_cert = ssl_cert_dup(ctx->cert);
4929 if (new_cert == NULL) {
4930 return NULL;
0f113f3e 4931 }
21181889 4932
38b051a1 4933 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
21181889
MC		 4934 ssl_cert_free(new_cert);
4935 return NULL;
4936 }
4937
38b051a1
TM		 4938 ssl_cert_free(sc->cert);
4939 sc->cert = new_cert;
0f113f3e
MC		 4940
4941 /*
4942 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4943 * so setter APIs must prevent invalid lengths from entering the system.
4944 */
38b051a1 4945 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
380a522f 4946 return NULL;
0f113f3e
MC		 4947
4948 /*
4949 * If the session ID context matches that of the parent SSL_CTX,
4950 * inherit it from the new SSL_CTX as well. If however the context does
4951 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4952 * leave it unchanged.
4953 */
4954 if ((ssl->ctx != NULL) &&
38b051a1
TM		 4955 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4956 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4957 sc->sid_ctx_length = ctx->sid_ctx_length;
4958 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
0f113f3e
MC		 4959 }
4960
16203f7b 4961 SSL_CTX_up_ref(ctx);
a230b26e 4962 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4963 ssl->ctx = ctx;
4964
16203f7b 4965 return ssl->ctx;
0f113f3e 4966}
ed3883d2 4967
4f43d0e7 4968int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4969{
d8652be0
MC		 4970 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4971 ctx->propq);
0f113f3e 4972}
58964a49 4973
d84a7b20
MC		 4974int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4975{
4976 X509_LOOKUP *lookup;
4977
4978 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4979 if (lookup == NULL)
4980 return 0;
6dcb100f
RL		 4981
4982 /* We ignore errors, in case the directory doesn't exist */
4983 ERR_set_mark();
4984
d84a7b20
MC		 4985 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4986
6dcb100f 4987 ERR_pop_to_mark();
d84a7b20
MC		 4988
4989 return 1;
4990}
4991
4992int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4993{
4994 X509_LOOKUP *lookup;
4995
4996 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4997 if (lookup == NULL)
4998 return 0;
4999
492bc359 5000 /* We ignore errors, in case the file doesn't exist */
6dcb100f
RL		 5001 ERR_set_mark();
5002
d8652be0
MC		 5003 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5004 ctx->propq);
d84a7b20 5005
6dcb100f
RL		 5006 ERR_pop_to_mark();
5007
5008 return 1;
5009}
5010
5011int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5012{
5013 X509_LOOKUP *lookup;
5014
5015 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5016 if (lookup == NULL)
5017 return 0;
5018
5019 /* We ignore errors, in case the directory doesn't exist */
5020 ERR_set_mark();
5021
d8652be0 5022 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
6dcb100f
RL		 5023
5024 ERR_pop_to_mark();
d84a7b20
MC		 5025
5026 return 1;
5027}
5028
6dcb100f
RL		 5029int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5030{
d8652be0
MC		 5031 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5032 ctx->propq);
6dcb100f
RL		 5033}
5034
5035int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5036{
5037 return X509_STORE_load_path(ctx->cert_store, CApath);
5038}
5039
5040int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5041{
d8652be0
MC		 5042 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5043 ctx->propq);
6dcb100f
RL		 5044}
5045
303c0028 5046int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 5047 const char *CApath)
5048{
6dcb100f
RL		 5049 if (CAfile == NULL && CApath == NULL)
5050 return 0;
5051 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5052 return 0;
5053 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5054 return 0;
5055 return 1;
0f113f3e 5056}
58964a49 5057
45d87a1f 5058void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 5059 void (*cb) (const SSL *ssl, int type, int val))
5060{
38b051a1
TM		 5061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5062
5063 if (sc == NULL)
5064 return;
5065
5066 sc->info_callback = cb;
0f113f3e
MC		 5067}
5068
5069/*
5070 * One compiler (Diab DCC) doesn't like argument names in returned function
5071 * pointer.
5072 */
5073void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5074 int /* type */ ,
5075 int /* val */ ) {
38b051a1
TM		 5076 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5077
5078 if (sc == NULL)
5079 return NULL;
5080
5081 return sc->info_callback;
0f113f3e 5082}
58964a49 5083
0f113f3e
MC		 5084void SSL_set_verify_result(SSL *ssl, long arg)
5085{
38b051a1
TM		 5086 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5087
5088 if (sc == NULL)
5089 return;
5090
5091 sc->verify_result = arg;
0f113f3e 5092}
58964a49 5093
0821bcd4 5094long SSL_get_verify_result(const SSL *ssl)
0f113f3e 5095{
38b051a1
TM		 5096 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5097
5098 if (sc == NULL)
5099 return 0;
5100
5101 return sc->verify_result;
0f113f3e
MC		 5102}
5103
d9f1c639 5104size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 5105{
38b051a1
TM		 5106 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5107
5108 if (sc == NULL)
5109 return 0;
5110
6b8f5d0d 5111 if (outlen == 0)
38b051a1
TM		 5112 return sizeof(sc->s3.client_random);
5113 if (outlen > sizeof(sc->s3.client_random))
5114 outlen = sizeof(sc->s3.client_random);
5115 memcpy(out, sc->s3.client_random, outlen);
d9f1c639 5116 return outlen;
858618e7
NM		 5117}
5118
d9f1c639 5119size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 5120{
38b051a1
TM		 5121 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5122
5123 if (sc == NULL)
5124 return 0;
5125
6b8f5d0d 5126 if (outlen == 0)
38b051a1
TM		 5127 return sizeof(sc->s3.server_random);
5128 if (outlen > sizeof(sc->s3.server_random))
5129 outlen = sizeof(sc->s3.server_random);
5130 memcpy(out, sc->s3.server_random, outlen);
d9f1c639 5131 return outlen;
858618e7
NM		 5132}
5133
d9f1c639 5134size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 5135 unsigned char *out, size_t outlen)
858618e7 5136{
d9f1c639
MC		 5137 if (outlen == 0)
5138 return session->master_key_length;
8c1a5343 5139 if (outlen > session->master_key_length)
858618e7
NM		 5140 outlen = session->master_key_length;
5141 memcpy(out, session->master_key, outlen);
d9f1c639 5142 return outlen;
858618e7
NM		 5143}
5144
725b0f1e 5145int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 5146 size_t len)
5147{
5148 if (len > sizeof(sess->master_key))
5149 return 0;
5150
5151 memcpy(sess->master_key, in, len);
5152 sess->master_key_length = len;
911d63f2
MC		 5153 return 1;
5154}
5155
5156
0f113f3e
MC		 5157int SSL_set_ex_data(SSL *s, int idx, void *arg)
5158{
26a7d938 5159 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 5160}
5161
5162void *SSL_get_ex_data(const SSL *s, int idx)
5163{
26a7d938 5164 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 5165}
5166
0f113f3e
MC		 5167int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5168{
26a7d938 5169 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 5170}
5171
5172void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5173{
26a7d938 5174 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 5175}
58964a49 5176
0821bcd4 5177X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 5178{
26a7d938 5179 return ctx->cert_store;
0f113f3e 5180}
413c4f45 5181
0f113f3e
MC		 5182void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5183{
222561fe 5184 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 5185 ctx->cert_store = store;
5186}
413c4f45 5187
b50052db
TS		 5188void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5189{
5190 if (store != NULL)
5191 X509_STORE_up_ref(store);
5192 SSL_CTX_set_cert_store(ctx, store);
5193}
5194
0821bcd4 5195int SSL_want(const SSL *s)
0f113f3e 5196{
38b051a1
TM		 5197 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5198
5199 if (sc == NULL)
5200 return SSL_NOTHING;
5201
5202 return sc->rwstate;
0f113f3e 5203}
413c4f45 5204
ddac1974
NL		 5205#ifndef OPENSSL_NO_PSK
5206int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 5207{
5208 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 5209 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 5210 return 0;
5211 }
df6da24b 5212 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 5213 if (identity_hint != NULL) {
7644a9ae 5214 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 5215 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 5216 return 0;
5217 } else
df6da24b 5218 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 5219 return 1;
5220}
ddac1974
NL		 5221
5222int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e 5223{
38b051a1
TM		 5224 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5225
5226 if (sc == NULL)
0f113f3e
MC		 5227 return 0;
5228
0f113f3e 5229 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
6849b73c 5230 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 5231 return 0;
5232 }
38b051a1 5233 OPENSSL_free(sc->cert->psk_identity_hint);
0f113f3e 5234 if (identity_hint != NULL) {
38b051a1
TM		 5235 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5236 if (sc->cert->psk_identity_hint == NULL)
0f113f3e
MC		 5237 return 0;
5238 } else
38b051a1 5239 sc->cert->psk_identity_hint = NULL;
0f113f3e
MC		 5240 return 1;
5241}
ddac1974
NL		 5242
5243const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e 5244{
38b051a1
TM		 5245 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5246
5247 if (sc == NULL || sc->session == NULL)
0f113f3e 5248 return NULL;
38b051a1
TM		 5249
5250 return sc->session->psk_identity_hint;
0f113f3e 5251}
ddac1974
NL		 5252
5253const char *SSL_get_psk_identity(const SSL *s)
0f113f3e 5254{
38b051a1
TM		 5255 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5256
5257 if (sc == NULL || sc->session == NULL)
0f113f3e 5258 return NULL;
38b051a1
TM		 5259
5260 return sc->session->psk_identity;
0f113f3e 5261}
7806f3dd 5262
8cbfcc70 5263void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e 5264{
38b051a1
TM		 5265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5266
5267 if (sc == NULL)
5268 return;
5269
5270 sc->psk_client_callback = cb;
0f113f3e 5271}
7806f3dd 5272
8cbfcc70 5273void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 5274{
5275 ctx->psk_client_callback = cb;
5276}
7806f3dd 5277
8cbfcc70 5278void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e 5279{
38b051a1
TM		 5280 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5281
5282 if (sc == NULL)
5283 return;
5284
5285 sc->psk_server_callback = cb;
0f113f3e 5286}
7806f3dd 5287
8cbfcc70 5288void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 5289{
5290 ctx->psk_server_callback = cb;
5291}
5292#endif
5293
f46184bd
MC		 5294void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5295{
38b051a1
TM		 5296 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5297
5298 if (sc == NULL)
5299 return;
5300
5301 sc->psk_find_session_cb = cb;
f46184bd
MC		 5302}
5303
5304void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5305 SSL_psk_find_session_cb_func cb)
5306{
5307 ctx->psk_find_session_cb = cb;
5308}
5309
5310void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5311{
38b051a1
TM		 5312 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5313
5314 if (sc == NULL)
5315 return;
5316
5317 sc->psk_use_session_cb = cb;
f46184bd
MC		 5318}
5319
5320void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5321 SSL_psk_use_session_cb_func cb)
5322{
5323 ctx->psk_use_session_cb = cb;
5324}
5325
0f113f3e
MC		 5326void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5327 void (*cb) (int write_p, int version,
5328 int content_type, const void *buf,
5329 size_t len, SSL *ssl, void *arg))
5330{
5331 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5332}
5333
5334void SSL_set_msg_callback(SSL *ssl,
5335 void (*cb) (int write_p, int version,
5336 int content_type, const void *buf,
5337 size_t len, SSL *ssl, void *arg))
5338{
5339 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5340}
a661b653 5341
7c2d4fee 5342void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 5343 int (*cb) (SSL *ssl,
5344 int
5345 is_forward_secure))
5346{
5347 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5348 (void (*)(void))cb);
5349}
5350
7c2d4fee 5351void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 5352 int (*cb) (SSL *ssl,
5353 int is_forward_secure))
5354{
5355 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5356 (void (*)(void))cb);
5357}
5358
c649d10d
TS		 5359void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5360 size_t (*cb) (SSL *ssl, int type,
5361 size_t len, void *arg))
5362{
5363 ctx->record_padding_cb = cb;
5364}
5365
5366void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5367{
5368 ctx->record_padding_arg = arg;
5369}
5370
3499327b 5371void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 5372{
5373 return ctx->record_padding_arg;
5374}
5375
5376int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5377{
5378 /* block size of 0 or 1 is basically no padding */
5379 if (block_size == 1)
5380 ctx->block_padding = 0;
5381 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5382 ctx->block_padding = block_size;
5383 else
5384 return 0;
5385 return 1;
5386}
5387
a6d36303 5388int SSL_set_record_padding_callback(SSL *ssl,
c649d10d
TS		 5389 size_t (*cb) (SSL *ssl, int type,
5390 size_t len, void *arg))
5391{
a6d36303 5392 BIO *b;
38b051a1
TM		 5393 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5394
5395 if (sc == NULL)
5396 return 0;
a6d36303
VF		 5397
5398 b = SSL_get_wbio(ssl);
5399 if (b == NULL || !BIO_get_ktls_send(b)) {
eb7d6c2a 5400 sc->rlayer.record_padding_cb = cb;
a6d36303
VF		 5401 return 1;
5402 }
5403 return 0;
c649d10d
TS		 5404}
5405
5406void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5407{
38b051a1
TM		 5408 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5409
5410 if (sc == NULL)
5411 return;
5412
eb7d6c2a 5413 sc->rlayer.record_padding_arg = arg;
c649d10d
TS		 5414}
5415
3499327b 5416void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d 5417{
38b051a1
TM		 5418 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5419
5420 if (sc == NULL)
5421 return NULL;
5422
eb7d6c2a 5423 return sc->rlayer.record_padding_arg;
c649d10d
TS		 5424}
5425
5426int SSL_set_block_padding(SSL *ssl, size_t block_size)
5427{
38b051a1
TM		 5428 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5429
5430 if (sc == NULL)
5431 return 0;
5432
c649d10d
TS		 5433 /* block size of 0 or 1 is basically no padding */
5434 if (block_size == 1)
eb7d6c2a 5435 sc->rlayer.block_padding = 0;
c649d10d 5436 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
eb7d6c2a 5437 sc->rlayer.block_padding = block_size;
c649d10d
TS		 5438 else
5439 return 0;
5440 return 1;
5441}
5442
9d0a8bb7
MC		 5443int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5444{
38b051a1
TM		 5445 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5446
5447 if (sc == NULL)
5448 return 0;
5449
5450 sc->num_tickets = num_tickets;
9d0a8bb7
MC		 5451
5452 return 1;
5453}
5454
3499327b 5455size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7 5456{
38b051a1
TM		 5457 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5458
5459 if (sc == NULL)
5460 return 0;
5461
5462 return sc->num_tickets;
9d0a8bb7
MC		 5463}
5464
5465int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5466{
5467 ctx->num_tickets = num_tickets;
5468
5469 return 1;
5470}
5471
3499327b 5472size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 5473{
5474 return ctx->num_tickets;
5475}
5476
0f113f3e
MC		 5477/*
5478 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 5479 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 5480 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 5481 * Returns the newly allocated ctx;
8671b898 5482 */
b948e2c5 5483
0f113f3e 5484EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 5485{
0f113f3e 5486 ssl_clear_hash_ctx(hash);
bfb0641f 5487 *hash = EVP_MD_CTX_new();
5f3d93e4 5488 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 5489 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 5490 *hash = NULL;
5491 return NULL;
5492 }
0f113f3e 5493 return *hash;
b948e2c5 5494}
0f113f3e
MC		 5495
5496void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 5497{
5498
0d9824c1 5499 EVP_MD_CTX_free(*hash);
0f113f3e 5500 *hash = NULL;
b948e2c5 5501}
a661b653 5502
48fbcbac 5503/* Retrieve handshake hashes */
38b051a1
TM		 5504int ssl_handshake_hash(SSL_CONNECTION *s,
5505 unsigned char *out, size_t outlen,
8c1a5343 5506 size_t *hashlen)
48fbcbac 5507{
6e59a892 5508 EVP_MD_CTX *ctx = NULL;
555cbb32 5509 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
ed576acd 5510 int hashleni = EVP_MD_CTX_get_size(hdgst);
8c1a5343
MC		 5511 int ret = 0;
5512
f63a17d6 5513 if (hashleni < 0 || (size_t)hashleni > outlen) {
c48ffbcc 5514 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
28ba2541 5515 goto err;
f63a17d6 5516 }
8c1a5343 5517
bfb0641f 5518 ctx = EVP_MD_CTX_new();
147ed5f9
TL		 5519 if (ctx == NULL) {
5520 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6e59a892 5521 goto err;
147ed5f9 5522 }
8c1a5343 5523
6e59a892 5524 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6 5525 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
c48ffbcc 5526 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
8c1a5343 5527 goto err;
f63a17d6 5528 }
8c1a5343
MC		 5529
5530 *hashlen = hashleni;
5531
5532 ret = 1;
48fbcbac 5533 err:
bfb0641f 5534 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 5535 return ret;
5536}
5537
c04b66b1 5538int SSL_session_reused(const SSL *s)
0f113f3e 5539{
38b051a1
TM		 5540 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5541
5542 if (sc == NULL)
5543 return 0;
5544
5545 return sc->hit;
0f113f3e 5546}
08557cf2 5547
69443116 5548int SSL_is_server(const SSL *s)
0f113f3e 5549{
38b051a1
TM		 5550 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5551
5552 if (sc == NULL)
5553 return 0;
5554
5555 return sc->server;
0f113f3e 5556}
87adf1fa 5557
00db8c60 5558#ifndef OPENSSL_NO_DEPRECATED_1_1_0
47153c72
RS		 5559void SSL_set_debug(SSL *s, int debug)
5560{
5561 /* Old function was do-nothing anyway... */
5562 (void)s;
5563 (void)debug;
5564}
5565#endif
5566
b362ccab 5567void SSL_set_security_level(SSL *s, int level)
0f113f3e 5568{
38b051a1
TM		 5569 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5570
5571 if (sc == NULL)
5572 return;
5573
5574 sc->cert->sec_level = level;
0f113f3e 5575}
b362ccab
DSH		 5576
5577int SSL_get_security_level(const SSL *s)
0f113f3e 5578{
38b051a1
TM		 5579 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5580
5581 if (sc == NULL)
5582 return 0;
5583
5584 return sc->cert->sec_level;
0f113f3e 5585}
b362ccab 5586
0f113f3e 5587void SSL_set_security_callback(SSL *s,
a230b26e
EK		 5588 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5589 int op, int bits, int nid,
5590 void *other, void *ex))
0f113f3e 5591{
38b051a1
TM		 5592 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5593
5594 if (sc == NULL)
5595 return;
5596
5597 sc->cert->sec_cb = cb;
0f113f3e 5598}
b362ccab 5599
a230b26e
EK		 5600int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5601 const SSL_CTX *ctx, int op,
5602 int bits, int nid, void *other,
5603 void *ex) {
38b051a1
TM		 5604 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5605
5606 if (sc == NULL)
5607 return NULL;
5608
5609 return sc->cert->sec_cb;
0f113f3e 5610}
b362ccab
DSH		 5611
5612void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e 5613{
38b051a1
TM		 5614 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5615
5616 if (sc == NULL)
5617 return;
5618
5619 sc->cert->sec_ex = ex;
0f113f3e 5620}
b362ccab
DSH		 5621
5622void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e 5623{
38b051a1
TM		 5624 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5625
5626 if (sc == NULL)
5627 return NULL;
5628
5629 return sc->cert->sec_ex;
0f113f3e 5630}
b362ccab
DSH		 5631
5632void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 5633{
5634 ctx->cert->sec_level = level;
5635}
b362ccab
DSH		 5636
5637int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 5638{
5639 return ctx->cert->sec_level;
5640}
b362ccab 5641
0f113f3e 5642void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 5643 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5644 int op, int bits, int nid,
5645 void *other, void *ex))
0f113f3e
MC		 5646{
5647 ctx->cert->sec_cb = cb;
5648}
b362ccab 5649
e4646a89
KR		 5650int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5651 const SSL_CTX *ctx,
0f113f3e
MC		 5652 int op, int bits,
5653 int nid,
5654 void *other,
5655 void *ex) {
5656 return ctx->cert->sec_cb;
5657}
b362ccab
DSH		 5658
5659void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 5660{
5661 ctx->cert->sec_ex = ex;
5662}
b362ccab
DSH		 5663
5664void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 5665{
5666 return ctx->cert->sec_ex;
5667}
b362ccab 5668
56bd1783 5669uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
8106cb8b
VD		 5670{
5671 return ctx->options;
5672}
a230b26e 5673
56bd1783 5674uint64_t SSL_get_options(const SSL *s)
8106cb8b 5675{
38b051a1
TM		 5676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5677
5678 if (sc == NULL)
5679 return 0;
5680
5681 return sc->options;
8106cb8b 5682}
a230b26e 5683
56bd1783 5684uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
8106cb8b
VD		 5685{
5686 return ctx->options |= op;
5687}
a230b26e 5688
56bd1783 5689uint64_t SSL_set_options(SSL *s, uint64_t op)
8106cb8b 5690{
38b051a1 5691 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4566dae7 5692 OSSL_PARAM options[2], *opts = options;
38b051a1
TM		 5693
5694 if (sc == NULL)
5695 return 0;
5696
4566dae7
MC		 5697 sc->options |= op;
5698
5699 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5700 &sc->options);
5701 *opts = OSSL_PARAM_construct_end();
5702
5703 /* Ignore return value */
5704 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5705
5706 return sc->options;
8106cb8b 5707}
a230b26e 5708
56bd1783 5709uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
8106cb8b
VD		 5710{
5711 return ctx->options &= ~op;
5712}
a230b26e 5713
56bd1783 5714uint64_t SSL_clear_options(SSL *s, uint64_t op)
8106cb8b 5715{
38b051a1
TM		 5716 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5717
5718 if (sc == NULL)
5719 return 0;
5720
5721 return sc->options &= ~op;
8106cb8b
VD		 5722}
5723
696178ed
DSH		 5724STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5725{
38b051a1
TM		 5726 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5727
5728 if (sc == NULL)
5729 return NULL;
5730
5731 return sc->verified_chain;
696178ed
DSH		 5732}
5733
0f113f3e 5734IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 5735
5736#ifndef OPENSSL_NO_CT
5737
5738/*
5739 * Moves SCTs from the |src| stack to the |dst| stack.
5740 * The source of each SCT will be set to |origin|.
5741 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5742 * the caller.
5743 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5744 */
a230b26e
EK		 5745static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5746 sct_source_t origin)
ed29e82a
RP		 5747{
5748 int scts_moved = 0;
5749 SCT *sct = NULL;
5750
5751 if (*dst == NULL) {
5752 *dst = sk_SCT_new_null();
5753 if (*dst == NULL) {
6849b73c 5754 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 5755 goto err;
5756 }
5757 }
5758
30eba7f3
DDO		 5759 while (sk_SCT_num(src) > 0) {
5760 sct = sk_SCT_pop(src);
ed29e82a
RP		 5761 if (SCT_set_source(sct, origin) != 1)
5762 goto err;
5763
5764 if (sk_SCT_push(*dst, sct) <= 0)
5765 goto err;
5766 scts_moved += 1;
5767 }
5768
5769 return scts_moved;
a230b26e 5770 err:
ed29e82a 5771 if (sct != NULL)
a230b26e 5772 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 5773 return -1;
ed29e82a
RP		 5774}
5775
5776/*
a230b26e 5777 * Look for data collected during ServerHello and parse if found.
6b13bd1d 5778 * Returns the number of SCTs extracted.
a230b26e 5779 */
38b051a1 5780static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
ed29e82a
RP		 5781{
5782 int scts_extracted = 0;
5783
aff8c126
RS		 5784 if (s->ext.scts != NULL) {
5785 const unsigned char *p = s->ext.scts;
5786 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 5787
5788 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5789
5790 SCT_LIST_free(scts);
5791 }
5792
5793 return scts_extracted;
5794}
5795
5796/*
5797 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5798 * contains an SCT X509 extension. They will be stored in |s->scts|.
5799 * Returns:
5800 * - The number of SCTs extracted, assuming an OCSP response exists.
5801 * - 0 if no OCSP response exists or it contains no SCTs.
5802 * - A negative integer if an error occurs.
5803 */
38b051a1 5804static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
ed29e82a 5805{
a230b26e 5806# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 5807 int scts_extracted = 0;
5808 const unsigned char *p;
5809 OCSP_BASICRESP *br = NULL;
5810 OCSP_RESPONSE *rsp = NULL;
5811 STACK_OF(SCT) *scts = NULL;
5812 int i;
5813
aff8c126 5814 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 5815 goto err;
5816
aff8c126
RS		 5817 p = s->ext.ocsp.resp;
5818 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 5819 if (rsp == NULL)
5820 goto err;
5821
5822 br = OCSP_response_get1_basic(rsp);
5823 if (br == NULL)
5824 goto err;
5825
5826 for (i = 0; i < OCSP_resp_count(br); ++i) {
5827 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5828
5829 if (single == NULL)
5830 continue;
5831
a230b26e
EK		 5832 scts =
5833 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5834 scts_extracted =
5835 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 5836 if (scts_extracted < 0)
5837 goto err;
5838 }
a230b26e 5839 err:
ed29e82a
RP		 5840 SCT_LIST_free(scts);
5841 OCSP_BASICRESP_free(br);
5842 OCSP_RESPONSE_free(rsp);
5843 return scts_extracted;
a230b26e 5844# else
3e41ac35
MC		 5845 /* Behave as if no OCSP response exists */
5846 return 0;
a230b26e 5847# endif
ed29e82a
RP		 5848}
5849
5850/*
5851 * Attempts to extract SCTs from the peer certificate.
5852 * Return the number of SCTs extracted, or a negative integer if an error
5853 * occurs.
5854 */
38b051a1 5855static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
ed29e82a
RP		 5856{
5857 int scts_extracted = 0;
3f3c7d26 5858 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 5859
5860 if (cert != NULL) {
5861 STACK_OF(SCT) *scts =
5862 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5863
5864 scts_extracted =
5865 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5866
5867 SCT_LIST_free(scts);
5868 }
5869
5870 return scts_extracted;
5871}
5872
5873/*
5874 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5875 * response (if it exists) and X509v3 extensions in the certificate.
5876 * Returns NULL if an error occurs.
5877 */
5878const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5879{
38b051a1
TM		 5880 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5881
5882 if (sc == NULL)
5883 return NULL;
5884
5885 if (!sc->scts_parsed) {
5886 if (ct_extract_tls_extension_scts(sc) < 0 ||
5887 ct_extract_ocsp_response_scts(sc) < 0 ||
5888 ct_extract_x509v3_extension_scts(sc) < 0)
ed29e82a
RP		 5889 goto err;
5890
38b051a1 5891 sc->scts_parsed = 1;
ed29e82a 5892 }
38b051a1 5893 return sc->scts;
a230b26e 5894 err:
ed29e82a
RP		 5895 return NULL;
5896}
5897
a230b26e 5898static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 5899 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 5900{
43341433
VD		 5901 return 1;
5902}
5903
a230b26e 5904static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 5905 const STACK_OF(SCT) *scts, void *unused_arg)
5906{
5907 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5908 int i;
ed29e82a 5909
43341433
VD		 5910 for (i = 0; i < count; ++i) {
5911 SCT *sct = sk_SCT_value(scts, i);
5912 int status = SCT_get_validation_status(sct);
5913
5914 if (status == SCT_VALIDATION_STATUS_VALID)
5915 return 1;
5916 }
6849b73c 5917 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
43341433
VD		 5918 return 0;
5919}
5920
5921int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5922 void *arg)
5923{
38b051a1
TM		 5924 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5925
5926 if (sc == NULL)
5927 return 0;
5928
ed29e82a
RP		 5929 /*
5930 * Since code exists that uses the custom extension handler for CT, look
5931 * for this and throw an error if they have already registered to use CT.
5932 */
5933 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 5934 TLSEXT_TYPE_signed_certificate_timestamp))
5935 {
6849b73c 5936 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5937 return 0;
ed29e82a
RP		 5938 }
5939
ed29e82a 5940 if (callback != NULL) {
a230b26e
EK		 5941 /*
5942 * If we are validating CT, then we MUST accept SCTs served via OCSP
5943 */
ed29e82a 5944 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 5945 return 0;
ed29e82a
RP		 5946 }
5947
38b051a1
TM		 5948 sc->ct_validation_callback = callback;
5949 sc->ct_validation_callback_arg = arg;
43341433
VD		 5950
5951 return 1;
ed29e82a
RP		 5952}
5953
43341433 5954int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 5955 ssl_ct_validation_cb callback, void *arg)
ed29e82a 5956{
ed29e82a
RP		 5957 /*
5958 * Since code exists that uses the custom extension handler for CT, look for
5959 * this and throw an error if they have already registered to use CT.
5960 */
5961 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 5962 TLSEXT_TYPE_signed_certificate_timestamp))
5963 {
6849b73c 5964 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5965 return 0;
ed29e82a
RP		 5966 }
5967
5968 ctx->ct_validation_callback = callback;
5969 ctx->ct_validation_callback_arg = arg;
43341433 5970 return 1;
ed29e82a
RP		 5971}
5972
43341433 5973int SSL_ct_is_enabled(const SSL *s)
ed29e82a 5974{
38b051a1
TM		 5975 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5976
5977 if (sc == NULL)
5978 return 0;
5979
5980 return sc->ct_validation_callback != NULL;
ed29e82a
RP		 5981}
5982
43341433 5983int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 5984{
43341433 5985 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 5986}
5987
38b051a1 5988int ssl_validate_ct(SSL_CONNECTION *s)
ed29e82a
RP		 5989{
5990 int ret = 0;
3f3c7d26 5991 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 5992 X509 *issuer;
b9aec69a 5993 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 5994 CT_POLICY_EVAL_CTX *ctx = NULL;
5995 const STACK_OF(SCT) *scts;
5996
43341433
VD		 5997 /*
5998 * If no callback is set, the peer is anonymous, or its chain is invalid,
5999 * skip SCT validation - just return success. Applications that continue
6000 * handshakes without certificates, with unverified chains, or pinned leaf
6001 * certificates are outside the scope of the WebPKI and CT.
6002 *
6003 * The above exclusions notwithstanding the vast majority of peers will
6004 * have rather ordinary certificate chains validated by typical
6005 * applications that perform certificate verification and therefore will
6006 * process SCTs when enabled.
6007 */
6008 if (s->ct_validation_callback == NULL || cert == NULL ||
6009 s->verify_result != X509_V_OK ||
a230b26e 6010 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 6011 return 1;
6012
43341433
VD		 6013 /*
6014 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6015 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6016 */
6017 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6018 switch (dane->mtlsa->usage) {
6019 case DANETLS_USAGE_DANE_TA:
6020 case DANETLS_USAGE_DANE_EE:
6021 return 1;
6022 }
ed29e82a
RP		 6023 }
6024
38b051a1
TM		 6025 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6026 SSL_CONNECTION_GET_CTX(s)->propq);
ed29e82a 6027 if (ctx == NULL) {
c48ffbcc 6028 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 6029 goto end;
6030 }
6031
43341433 6032 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 6033 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6034 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
38b051a1
TM		 6035 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6036 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6a71e06d 6037 CT_POLICY_EVAL_CTX_set_time(
38b051a1 6038 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
ed29e82a 6039
38b051a1 6040 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
ed29e82a 6041
43341433
VD		 6042 /*
6043 * This function returns success (> 0) only when all the SCTs are valid, 0
6044 * when some are invalid, and < 0 on various internal errors (out of
6045 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6046 * reason to abort the handshake, that decision is up to the callback.
6047 * Therefore, we error out only in the unexpected case that the return
6048 * value is negative.
6049 *
6050 * XXX: One might well argue that the return value of this function is an
f430ba31 6051 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 6052 * status of each of the provided SCTs. So long as it correctly separates
6053 * the wheat from the chaff it should return success. Failure in this case
6054 * ought to correspond to an inability to carry out its duties.
6055 */
6056 if (SCT_LIST_validate(scts, ctx) < 0) {
c48ffbcc 6057 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 6058 goto end;
6059 }
6060
6061 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6062 if (ret < 0)
a230b26e 6063 ret = 0; /* This function returns 0 on failure */
f63a17d6 6064 if (!ret)
c48ffbcc 6065 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
ed29e82a 6066
a230b26e 6067 end:
ed29e82a 6068 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 6069 /*
6070 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6071 * failure return code here. Also the application may wish the complete
6072 * the handshake, and then disconnect cleanly at a higher layer, after
6073 * checking the verification status of the completed connection.
6074 *
6075 * We therefore force a certificate verification failure which will be
6076 * visible via SSL_get_verify_result() and cached as part of any resumed
6077 * session.
6078 *
6079 * Note: the permissive callback is for information gathering only, always
6080 * returns success, and does not affect verification status. Only the
6081 * strict callback or a custom application-specified callback can trigger
6082 * connection failure or record a verification error.
6083 */
6084 if (ret <= 0)
6085 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 6086 return ret;
6087}
6088
43341433
VD		 6089int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6090{
6091 switch (validation_mode) {
6092 default:
6849b73c 6093 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 6094 return 0;
6095 case SSL_CT_VALIDATION_PERMISSIVE:
6096 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6097 case SSL_CT_VALIDATION_STRICT:
6098 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6099 }
6100}
6101
6102int SSL_enable_ct(SSL *s, int validation_mode)
6103{
6104 switch (validation_mode) {
6105 default:
6849b73c 6106 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
43341433
VD		 6107 return 0;
6108 case SSL_CT_VALIDATION_PERMISSIVE:
6109 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6110 case SSL_CT_VALIDATION_STRICT:
6111 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6112 }
6113}
6114
ed29e82a
RP		 6115int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6116{
328f36c5 6117 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 6118}
6119
6120int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6121{
6122 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6123}
6124
a230b26e 6125void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 6126{
6127 CTLOG_STORE_free(ctx->ctlog_store);
6128 ctx->ctlog_store = logs;
6129}
6130
6131const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6132{
6133 return ctx->ctlog_store;
6134}
6135
6b1bb98f
BK		 6136#endif /* OPENSSL_NO_CT */
6137
a9c0d8be
DB		 6138void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6139 void *arg)
6b1bb98f 6140{
a9c0d8be
DB		 6141 c->client_hello_cb = cb;
6142 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 6143}
6144
a9c0d8be 6145int SSL_client_hello_isv2(SSL *s)
6b1bb98f 6146{
38b051a1
TM		 6147 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6148
6149 if (sc == NULL)
6150 return 0;
6151
6152 if (sc->clienthello == NULL)
6b1bb98f 6153 return 0;
38b051a1 6154 return sc->clienthello->isv2;
6b1bb98f
BK		 6155}
6156
a9c0d8be 6157unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f 6158{
38b051a1
TM		 6159 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6160
6161 if (sc == NULL)
6162 return 0;
6163
6164 if (sc->clienthello == NULL)
6b1bb98f 6165 return 0;
38b051a1 6166 return sc->clienthello->legacy_version;
6b1bb98f
BK		 6167}
6168
a9c0d8be 6169size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f 6170{
38b051a1
TM		 6171 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6172
6173 if (sc == NULL)
6174 return 0;
6175
6176 if (sc->clienthello == NULL)
6b1bb98f
BK		 6177 return 0;
6178 if (out != NULL)
38b051a1 6179 *out = sc->clienthello->random;
6b1bb98f
BK		 6180 return SSL3_RANDOM_SIZE;
6181}
6182
a9c0d8be 6183size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f 6184{
38b051a1
TM		 6185 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6186
6187 if (sc == NULL)
6188 return 0;
6189
6190 if (sc->clienthello == NULL)
6b1bb98f
BK		 6191 return 0;
6192 if (out != NULL)
38b051a1
TM		 6193 *out = sc->clienthello->session_id;
6194 return sc->clienthello->session_id_len;
6b1bb98f
BK		 6195}
6196
a9c0d8be 6197size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f 6198{
38b051a1
TM		 6199 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6200
6201 if (sc == NULL)
6202 return 0;
6203
6204 if (sc->clienthello == NULL)
6b1bb98f
BK		 6205 return 0;
6206 if (out != NULL)
38b051a1
TM		 6207 *out = PACKET_data(&sc->clienthello->ciphersuites);
6208 return PACKET_remaining(&sc->clienthello->ciphersuites);
6b1bb98f
BK		 6209}
6210
a9c0d8be 6211size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f 6212{
38b051a1
TM		 6213 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6214
6215 if (sc == NULL)
6216 return 0;
6217
6218 if (sc->clienthello == NULL)
6b1bb98f
BK		 6219 return 0;
6220 if (out != NULL)
38b051a1
TM		 6221 *out = sc->clienthello->compressions;
6222 return sc->clienthello->compressions_len;
6b1bb98f
BK		 6223}
6224
a9c0d8be 6225int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 6226{
6227 RAW_EXTENSION *ext;
6228 int *present;
6229 size_t num = 0, i;
38b051a1 6230 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
193b5d76 6231
38b051a1 6232 if (sc == NULL)
193b5d76 6233 return 0;
38b051a1
TM		 6234
6235 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6236 return 0;
6237 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6238 ext = sc->clienthello->pre_proc_exts + i;
193b5d76
BK		 6239 if (ext->present)
6240 num++;
6241 }
6fda11ae 6242 if (num == 0) {
6243 *out = NULL;
6244 *outlen = 0;
6245 return 1;
6246 }
cdb10bae 6247 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6849b73c 6248 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
193b5d76 6249 return 0;
cdb10bae 6250 }
38b051a1
TM		 6251 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6252 ext = sc->clienthello->pre_proc_exts + i;
193b5d76
BK		 6253 if (ext->present) {
6254 if (ext->received_order >= num)
6255 goto err;
6256 present[ext->received_order] = ext->type;
6257 }
6258 }
6259 *out = present;
6260 *outlen = num;
6261 return 1;
6262 err:
6263 OPENSSL_free(present);
6264 return 0;
6265}
6266
13a53fbf
PL		 6267int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6268{
6269 RAW_EXTENSION *ext;
6270 size_t num = 0, i;
38b051a1
TM		 6271 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6272
6273 if (sc == NULL)
6274 return 0;
13a53fbf 6275
38b051a1 6276 if (sc->clienthello == NULL || num_exts == NULL)
13a53fbf 6277 return 0;
38b051a1
TM		 6278 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6279 ext = sc->clienthello->pre_proc_exts + i;
13a53fbf
PL		 6280 if (ext->present)
6281 num++;
6282 }
6283 if (num == 0) {
6284 *num_exts = 0;
6285 return 1;
6286 }
6287 if (exts == NULL) {
6288 *num_exts = num;
6289 return 1;
6290 }
6291 if (*num_exts < num)
6292 return 0;
38b051a1
TM		 6293 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6294 ext = sc->clienthello->pre_proc_exts + i;
13a53fbf
PL		 6295 if (ext->present) {
6296 if (ext->received_order >= num)
6297 return 0;
6298 exts[ext->received_order] = ext->type;
6299 }
6300 }
6301 *num_exts = num;
6302 return 1;
6303}
6304
a9c0d8be 6305int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 6306 size_t *outlen)
6307{
6308 size_t i;
6309 RAW_EXTENSION *r;
38b051a1 6310 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6b1bb98f 6311
38b051a1 6312 if (sc == NULL)
6b1bb98f 6313 return 0;
38b051a1
TM		 6314
6315 if (sc->clienthello == NULL)
6316 return 0;
6317 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6318 r = sc->clienthello->pre_proc_exts + i;
6b1bb98f
BK		 6319 if (r->present && r->type == type) {
6320 if (out != NULL)
6321 *out = PACKET_data(&r->data);
6322 if (outlen != NULL)
6323 *outlen = PACKET_remaining(&r->data);
6324 return 1;
6325 }
6326 }
6327 return 0;
6328}
2faa1b48 6329
a58eb06d
TS		 6330int SSL_free_buffers(SSL *ssl)
6331{
38b051a1
TM		 6332 RECORD_LAYER *rl;
6333 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6334
6335 if (sc == NULL)
6336 return 0;
6337
6338 rl = &sc->rlayer;
a58eb06d
TS		 6339
6340 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6341 return 0;
6342
6343 RECORD_LAYER_release(rl);
6344 return 1;
6345}
6346
6347int SSL_alloc_buffers(SSL *ssl)
6348{
38b051a1
TM		 6349 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6350
6351 if (sc == NULL)
6352 return 0;
6353
6354 return ssl3_setup_buffers(sc);
a58eb06d
TS		 6355}
6356
2faa1b48
CB		 6357void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6358{
6359 ctx->keylog_callback = cb;
6360}
6361
6362SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6363{
6364 return ctx->keylog_callback;
6365}
6366
6367static int nss_keylog_int(const char *prefix,
38b051a1 6368 SSL_CONNECTION *sc,
2faa1b48
CB		 6369 const uint8_t *parameter_1,
6370 size_t parameter_1_len,
6371 const uint8_t *parameter_2,
6372 size_t parameter_2_len)
6373{
6374 char *out = NULL;
6375 char *cursor = NULL;
6376 size_t out_len = 0;
6377 size_t i;
6378 size_t prefix_len;
38b051a1 6379 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
2faa1b48 6380
38b051a1 6381 if (sctx->keylog_callback == NULL)
20870286 6382 return 1;
2faa1b48
CB		 6383
6384 /*
6385 * Our output buffer will contain the following strings, rendered with
6386 * space characters in between, terminated by a NULL character: first the
6387 * prefix, then the first parameter, then the second parameter. The
6388 * meaning of each parameter depends on the specific key material being
6389 * logged. Note that the first and second parameters are encoded in
6390 * hexadecimal, so we need a buffer that is twice their lengths.
6391 */
6392 prefix_len = strlen(prefix);
e931f370 6393 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
2faa1b48 6394 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
38b051a1 6395 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 6396 return 0;
6397 }
6398
6399 strcpy(cursor, prefix);
6400 cursor += prefix_len;
6401 *cursor++ = ' ';
6402
6403 for (i = 0; i < parameter_1_len; i++) {
6404 sprintf(cursor, "%02x", parameter_1[i]);
6405 cursor += 2;
6406 }
6407 *cursor++ = ' ';
6408
6409 for (i = 0; i < parameter_2_len; i++) {
6410 sprintf(cursor, "%02x", parameter_2[i]);
6411 cursor += 2;
6412 }
6413 *cursor = '\0';
6414
38b051a1 6415 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
e931f370 6416 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 6417 return 1;
6418
6419}
6420
38b051a1 6421int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
2faa1b48
CB		 6422 const uint8_t *encrypted_premaster,
6423 size_t encrypted_premaster_len,
6424 const uint8_t *premaster,
6425 size_t premaster_len)
6426{
6427 if (encrypted_premaster_len < 8) {
38b051a1 6428 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 6429 return 0;
6430 }
6431
f0deb4d3 6432 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48 6433 return nss_keylog_int("RSA",
38b051a1 6434 sc,
2faa1b48 6435 encrypted_premaster,
f0deb4d3 6436 8,
2faa1b48
CB		 6437 premaster,
6438 premaster_len);
6439}
6440
38b051a1 6441int ssl_log_secret(SSL_CONNECTION *sc,
2c7bd692
CB		 6442 const char *label,
6443 const uint8_t *secret,
6444 size_t secret_len)
2faa1b48 6445{
2c7bd692 6446 return nss_keylog_int(label,
38b051a1
TM		 6447 sc,
6448 sc->s3.client_random,
2c7bd692
CB		 6449 SSL3_RANDOM_SIZE,
6450 secret,
6451 secret_len);
2faa1b48
CB		 6452}
6453
ccb8e6e0
BK		 6454#define SSLV2_CIPHER_LEN 3
6455
38b051a1 6456int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 6457{
ccb8e6e0 6458 int n;
ccb8e6e0
BK		 6459
6460 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6461
6462 if (PACKET_remaining(cipher_suites) == 0) {
c48ffbcc 6463 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 6464 return 0;
ccb8e6e0
BK		 6465 }
6466
6467 if (PACKET_remaining(cipher_suites) % n != 0) {
c48ffbcc 6468 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 6469 return 0;
ccb8e6e0
BK		 6470 }
6471
555cbb32
TS		 6472 OPENSSL_free(s->s3.tmp.ciphers_raw);
6473 s->s3.tmp.ciphers_raw = NULL;
6474 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 6475
6476 if (sslv2format) {
6477 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6478 PACKET sslv2ciphers = *cipher_suites;
6479 unsigned int leadbyte;
6480 unsigned char *raw;
6481
6482 /*
6483 * We store the raw ciphers list in SSLv3+ format so we need to do some
6484 * preprocessing to convert the list first. If there are any SSLv2 only
6485 * ciphersuites with a non-zero leading byte then we are going to
6486 * slightly over allocate because we won't store those. But that isn't a
6487 * problem.
6488 */
6489 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 6490 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 6491 if (raw == NULL) {
c48ffbcc 6492 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 6493 return 0;
ccb8e6e0 6494 }
555cbb32 6495 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 6496 PACKET_remaining(&sslv2ciphers) > 0;
6497 raw += TLS_CIPHER_LEN) {
6498 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6499 || (leadbyte == 0
6500 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6501 TLS_CIPHER_LEN))
6502 || (leadbyte != 0
6503 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
c48ffbcc 6504 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
555cbb32
TS		 6505 OPENSSL_free(s->s3.tmp.ciphers_raw);
6506 s->s3.tmp.ciphers_raw = NULL;
6507 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 6508 return 0;
ccb8e6e0
BK		 6509 }
6510 if (leadbyte == 0)
555cbb32 6511 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 6512 }
555cbb32
TS		 6513 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6514 &s->s3.tmp.ciphers_rawlen)) {
c48ffbcc 6515 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
f63a17d6 6516 return 0;
ccb8e6e0 6517 }
90134d98 6518 return 1;
90134d98
BK		 6519}
6520
6521int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6522 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6523 STACK_OF(SSL_CIPHER) **scsvs)
6524{
90134d98 6525 PACKET pkt;
38b051a1
TM		 6526 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6527
6528 if (sc == NULL)
6529 return 0;
90134d98
BK		 6530
6531 if (!PACKET_buf_init(&pkt, bytes, len))
6532 return 0;
38b051a1 6533 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 6534}
6535
38b051a1
TM		 6536int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6537 STACK_OF(SSL_CIPHER) **skp,
6538 STACK_OF(SSL_CIPHER) **scsvs_out,
6539 int sslv2format, int fatal)
90134d98
BK		 6540{
6541 const SSL_CIPHER *c;
6542 STACK_OF(SSL_CIPHER) *sk = NULL;
6543 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6544 int n;
6545 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6546 unsigned char cipher[SSLV2_CIPHER_LEN];
6547
6548 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6549
6550 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6 6551 if (fatal)
c48ffbcc 6552 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
f63a17d6 6553 else
6849b73c 6554 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 6555 return 0;
6556 }
6557
6558 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 6559 if (fatal)
c48ffbcc 6560 SSLfatal(s, SSL_AD_DECODE_ERROR,
f63a17d6
MC		 6561 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6562 else
6849b73c 6563 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 6564 return 0;
6565 }
6566
6567 sk = sk_SSL_CIPHER_new_null();
6568 scsvs = sk_SSL_CIPHER_new_null();
6569 if (sk == NULL || scsvs == NULL) {
f63a17d6 6570 if (fatal)
c48ffbcc 6571 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 6572 else
6849b73c 6573 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
90134d98
BK		 6574 goto err;
6575 }
ccb8e6e0
BK		 6576
6577 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6578 /*
6579 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6580 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6581 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6582 */
6583 if (sslv2format && cipher[0] != '\0')
6584 continue;
6585
ccb8e6e0
BK		 6586 /* For SSLv2-compat, ignore leading 0-byte. */
6587 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6588 if (c != NULL) {
90134d98
BK		 6589 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6590 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6 6591 if (fatal)
c48ffbcc 6592 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
f63a17d6 6593 else
6849b73c 6594 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 6595 goto err;
6596 }
6597 }
6598 }
6599 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6 6600 if (fatal)
c48ffbcc 6601 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
f63a17d6 6602 else
6849b73c 6603 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 6604 goto err;
6605 }
6606
90134d98
BK		 6607 if (skp != NULL)
6608 *skp = sk;
6609 else
6610 sk_SSL_CIPHER_free(sk);
6611 if (scsvs_out != NULL)
6612 *scsvs_out = scsvs;
6613 else
6614 sk_SSL_CIPHER_free(scsvs);
6615 return 1;
ccb8e6e0
BK		 6616 err:
6617 sk_SSL_CIPHER_free(sk);
90134d98
BK		 6618 sk_SSL_CIPHER_free(scsvs);
6619 return 0;
ccb8e6e0 6620}
3fc8d856
MC		 6621
6622int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6623{
6624 ctx->max_early_data = max_early_data;
6625
6626 return 1;
6627}
6628
46dcb945 6629uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 6630{
6631 return ctx->max_early_data;
6632}
6633
6634int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6635{
38b051a1
TM		 6636 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6637
6638 if (sc == NULL)
6639 return 0;
6640
6641 sc->max_early_data = max_early_data;
3fc8d856
MC		 6642
6643 return 1;
6644}
6645
a8e75d56 6646uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856 6647{
38b051a1
TM		 6648 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6649
6650 if (sc == NULL)
6651 return 0;
6652
6653 return sc->max_early_data;
3fc8d856 6654}
ae3947de 6655
4e8548e8
MC		 6656int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6657{
6658 ctx->recv_max_early_data = recv_max_early_data;
6659
6660 return 1;
6661}
6662
6663uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6664{
6665 return ctx->recv_max_early_data;
6666}
6667
6668int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6669{
38b051a1
TM		 6670 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6671
6672 if (sc == NULL)
6673 return 0;
6674
6675 sc->recv_max_early_data = recv_max_early_data;
4e8548e8
MC		 6676
6677 return 1;
6678}
6679
6680uint32_t SSL_get_recv_max_early_data(const SSL *s)
6681{
38b051a1
TM		 6682 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6683
6684 if (sc == NULL)
6685 return 0;
6686
6687 return sc->recv_max_early_data;
4e8548e8
MC		 6688}
6689
38b051a1 6690__owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
cf72c757
F		 6691{
6692 /* Return any active Max Fragment Len extension */
38b051a1
TM		 6693 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6694 return GET_MAX_FRAGMENT_LENGTH(sc->session);
cf72c757
F		 6695
6696 /* return current SSL connection setting */
38b051a1 6697 return sc->max_send_fragment;
cf72c757
F		 6698}
6699
38b051a1 6700__owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
cf72c757
F		 6701{
6702 /* Return a value regarding an active Max Fragment Len extension */
38b051a1
TM		 6703 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6704 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6705 return GET_MAX_FRAGMENT_LENGTH(sc->session);
cf72c757
F		 6706
6707 /* else limit |split_send_fragment| to current |max_send_fragment| */
38b051a1
TM		 6708 if (sc->split_send_fragment > sc->max_send_fragment)
6709 return sc->max_send_fragment;
cf72c757
F		 6710
6711 /* return current SSL connection setting */
38b051a1 6712 return sc->split_send_fragment;
cf72c757 6713}
042c5753
MC		 6714
6715int SSL_stateless(SSL *s)
6716{
6717 int ret;
38b051a1
TM		 6718 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6719
6720 /* TODO(QUIC): This will need further work. */
6721 if (sc == NULL)
6722 return 0;
042c5753
MC		 6723
6724 /* Ensure there is no state left over from a previous invocation */
6725 if (!SSL_clear(s))
d6bb50a5 6726 return 0;
042c5753
MC		 6727
6728 ERR_clear_error();
6729
38b051a1 6730 sc->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 6731 ret = SSL_accept(s);
38b051a1 6732 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 6733
38b051a1 6734 if (ret > 0 && sc->ext.cookieok)
c36001c3
MC		 6735 return 1;
6736
38b051a1 6737 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
e440f513
MC		 6738 return 0;
6739
6740 return -1;
042c5753 6741}
9d75dce3 6742
e97be718
MC		 6743void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6744{
6745 ctx->pha_enabled = val;
6746}
6747
32097b33 6748void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 6749{
38b051a1
TM		 6750 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6751
6752 if (sc == NULL)
6753 return;
6754
6755 sc->pha_enabled = val;
9d75dce3
TS		 6756}
6757
6758int SSL_verify_client_post_handshake(SSL *ssl)
6759{
38b051a1
TM		 6760 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6761
6762 if (sc == NULL)
6763 return 0;
6764
6765 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6849b73c 6766 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
9d75dce3
TS		 6767 return 0;
6768 }
38b051a1 6769 if (!sc->server) {
6849b73c 6770 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
9d75dce3
TS		 6771 return 0;
6772 }
6773
6774 if (!SSL_is_init_finished(ssl)) {
6849b73c 6775 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
9d75dce3
TS		 6776 return 0;
6777 }
6778
38b051a1 6779 switch (sc->post_handshake_auth) {
9d75dce3 6780 case SSL_PHA_NONE:
6849b73c 6781 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
9d75dce3
TS		 6782 return 0;
6783 default:
6784 case SSL_PHA_EXT_SENT:
6849b73c 6785 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
9d75dce3
TS		 6786 return 0;
6787 case SSL_PHA_EXT_RECEIVED:
6788 break;
6789 case SSL_PHA_REQUEST_PENDING:
6849b73c 6790 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
9d75dce3
TS		 6791 return 0;
6792 case SSL_PHA_REQUESTED:
6849b73c 6793 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
9d75dce3
TS		 6794 return 0;
6795 }
6796
38b051a1 6797 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
9d75dce3
TS		 6798
6799 /* checks verify_mode and algorithm_auth */
38b051a1
TM		 6800 if (!send_certificate_request(sc)) {
6801 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6849b73c 6802 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
9d75dce3
TS		 6803 return 0;
6804 }
6805
38b051a1 6806 ossl_statem_set_in_init(sc, 1);
9d75dce3
TS		 6807 return 1;
6808}
df0fed9a
TS		 6809
6810int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6811 SSL_CTX_generate_session_ticket_fn gen_cb,
6812 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6813 void *arg)
6814{
6815 ctx->generate_ticket_cb = gen_cb;
6816 ctx->decrypt_ticket_cb = dec_cb;
6817 ctx->ticket_cb_data = arg;
6818 return 1;
6819}
c9598459
MC		 6820
6821void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6822 SSL_allow_early_data_cb_fn cb,
6823 void *arg)
6824{
6825 ctx->allow_early_data_cb = cb;
6826 ctx->allow_early_data_cb_data = arg;
6827}
6828
6829void SSL_set_allow_early_data_cb(SSL *s,
6830 SSL_allow_early_data_cb_fn cb,
6831 void *arg)
6832{
38b051a1
TM		 6833 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6834
6835 if (sc == NULL)
6836 return;
6837
6838 sc->allow_early_data_cb = cb;
6839 sc->allow_early_data_cb_data = arg;
c9598459 6840}
c8f6c28a 6841
b4250010 6842const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 6843 int nid,
6844 const char *properties)
6845{
301fcb28 6846 const EVP_CIPHER *ciph;
5fcb97c6 6847
301fcb28
MC		 6848 ciph = tls_get_cipher_from_engine(nid);
6849 if (ciph != NULL)
6850 return ciph;
0618b62c 6851
c8f6c28a 6852 /*
301fcb28
MC		 6853 * If there is no engine cipher then we do an explicit fetch. This may fail
6854 * and that could be ok
c8f6c28a 6855 */
5fcb97c6
MC		 6856 ERR_set_mark();
6857 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6858 ERR_pop_to_mark();
6859 return ciph;
c8f6c28a
MC		 6860}
6861
6862
6863int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6864{
6865 /* Don't up-ref an implicit EVP_CIPHER */
ed576acd 6866 if (EVP_CIPHER_get0_provider(cipher) == NULL)
c8f6c28a
MC		 6867 return 1;
6868
6869 /*
6870 * The cipher was explicitly fetched and therefore it is safe to cast
6871 * away the const
6872 */
6873 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6874}
6875
6876void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6877{
6878 if (cipher == NULL)
6879 return;
6880
ed576acd 6881 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
c8f6c28a
MC		 6882 /*
6883 * The cipher was explicitly fetched and therefore it is safe to cast
6884 * away the const
6885 */
6886 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6887 }
6888}
6889
b4250010 6890const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
c8f6c28a
MC		 6891 int nid,
6892 const char *properties)
6893{
301fcb28 6894 const EVP_MD *md;
5fcb97c6 6895
301fcb28
MC		 6896 md = tls_get_digest_from_engine(nid);
6897 if (md != NULL)
6898 return md;
c8f6c28a
MC		 6899
6900 /* Otherwise we do an explicit fetch */
5fcb97c6
MC		 6901 ERR_set_mark();
6902 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6903 ERR_pop_to_mark();
6904 return md;
c8f6c28a
MC		 6905}
6906
6907int ssl_evp_md_up_ref(const EVP_MD *md)
6908{
6909 /* Don't up-ref an implicit EVP_MD */
ed576acd 6910 if (EVP_MD_get0_provider(md) == NULL)
c8f6c28a
MC		 6911 return 1;
6912
6913 /*
6914 * The digest was explicitly fetched and therefore it is safe to cast
6915 * away the const
6916 */
6917 return EVP_MD_up_ref((EVP_MD *)md);
6918}
6919
6920void ssl_evp_md_free(const EVP_MD *md)
6921{
6922 if (md == NULL)
6923 return;
6924
ed576acd 6925 if (EVP_MD_get0_provider(md) != NULL) {
c8f6c28a
MC		 6926 /*
6927 * The digest was explicitly fetched and therefore it is safe to cast
6928 * away the const
6929 */
6930 EVP_MD_free((EVP_MD *)md);
6931 }
6932}
163f6dc1
MC		 6933
6934int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6935{
38b051a1
TM		 6936 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6937
6938 if (sc == NULL)
6939 return 0;
6940
6941 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
ed576acd 6942 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 6943 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 6944 return 0;
6945 }
38b051a1
TM		 6946 EVP_PKEY_free(sc->cert->dh_tmp);
6947 sc->cert->dh_tmp = dhpkey;
163f6dc1
MC		 6948 return 1;
6949}
6950
6951int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6952{
6953 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
ed576acd 6954 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
276d6c68 6955 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
163f6dc1
MC		 6956 return 0;
6957 }
6958 EVP_PKEY_free(ctx->cert->dh_tmp);
6959 ctx->cert->dh_tmp = dhpkey;
6960 return 1;
6961}
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