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[thirdparty/openssl.git] / ssl / ssl_lib.c
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0f113f3e 1/*
33388b44 2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
aa8f3d76 3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
c80149d9 4 * Copyright 2005 Nokia. All rights reserved.
bf21446a 5 *
2c18d164 6 * Licensed under the Apache License 2.0 (the "License"). You may not use
846e33c7
RS		 7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
bf21446a 10 */
846e33c7 11
d02b48c6 12#include <stdio.h>
706457b7 13#include "ssl_local.h"
7c3a7561 14#include "e_os.h"
ec577822 15#include <openssl/objects.h>
bb7cd4e3 16#include <openssl/x509v3.h>
6434abbf 17#include <openssl/rand.h>
6decf943 18#include <openssl/rand_drbg.h>
67c8e7f4 19#include <openssl/ocsp.h>
3c27208f
RS		 20#include <openssl/dh.h>
21#include <openssl/engine.h>
07bbc92c 22#include <openssl/async.h>
3c27208f 23#include <openssl/ct.h>
77359d22 24#include <openssl/trace.h>
67dc995e 25#include "internal/cryptlib.h"
cd420b0b 26#include "internal/refcount.h"
50ec7505 27#include "internal/ktls.h"
0f113f3e 28
852c2ed2
RS		 29DEFINE_STACK_OF(X509)
30DEFINE_STACK_OF(X509_NAME)
31DEFINE_STACK_OF_CONST(SSL_CIPHER)
32DEFINE_STACK_OF(X509_EXTENSION)
33DEFINE_STACK_OF(OCSP_RESPID)
34DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
35DEFINE_STACK_OF(SCT)
36
ec27e619
MC		 37static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
38 SSL_MAC_BUF *mac, size_t macsize)
fce78bd4 39{
fce78bd4
BE		 40 return ssl_undefined_function(ssl);
41}
42
43static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
44 int t)
45{
fce78bd4
BE		 46 return ssl_undefined_function(ssl);
47}
48
49static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
50 unsigned char *s, size_t t, size_t *u)
51{
fce78bd4
BE		 52 return ssl_undefined_function(ssl);
53}
54
55static int ssl_undefined_function_4(SSL *ssl, int r)
56{
fce78bd4
BE		 57 return ssl_undefined_function(ssl);
58}
59
60static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
61 unsigned char *t)
62{
fce78bd4
BE		 63 return ssl_undefined_function(ssl);
64}
65
66static int ssl_undefined_function_6(int r)
67{
fce78bd4
BE		 68 return ssl_undefined_function(NULL);
69}
70
71static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
72 const char *t, size_t u,
73 const unsigned char *v, size_t w, int x)
74{
fce78bd4
BE		 75 return ssl_undefined_function(ssl);
76}
77
0f113f3e 78SSL3_ENC_METHOD ssl3_undef_enc_method = {
fce78bd4
BE		 79 ssl_undefined_function_1,
80 ssl_undefined_function_2,
0f113f3e 81 ssl_undefined_function,
fce78bd4
BE		 82 ssl_undefined_function_3,
83 ssl_undefined_function_4,
84 ssl_undefined_function_5,
0f113f3e
MC		 85 NULL, /* client_finished_label */
86 0, /* client_finished_label_len */
87 NULL, /* server_finished_label */
88 0, /* server_finished_label_len */
fce78bd4
BE		 89 ssl_undefined_function_6,
90 ssl_undefined_function_7,
0f113f3e 91};
d02b48c6 92
07bbc92c
MC		 93struct ssl_async_args {
94 SSL *s;
95 void *buf;
348240c6 96 size_t num;
a230b26e 97 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 98 union {
eda75751 99 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 100 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 101 int (*func_other) (SSL *);
add2f5ca 102 } f;
07bbc92c
MC		 103};
104
919ba009
VD		 105static const struct {
106 uint8_t mtype;
107 uint8_t ord;
a230b26e 108 int nid;
919ba009 109} dane_mds[] = {
a230b26e
EK		 110 {
111 DANETLS_MATCHING_FULL, 0, NID_undef
112 },
113 {
114 DANETLS_MATCHING_2256, 1, NID_sha256
115 },
116 {
117 DANETLS_MATCHING_2512, 2, NID_sha512
118 },
919ba009
VD		 119};
120
121static int dane_ctx_enable(struct dane_ctx_st *dctx)
122{
123 const EVP_MD **mdevp;
124 uint8_t *mdord;
125 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 126 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 127 size_t i;
128
5ae4ceb9
VD		 129 if (dctx->mdevp != NULL)
130 return 1;
131
919ba009
VD		 132 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
133 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
134
135 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 136 OPENSSL_free(mdord);
919ba009
VD		 137 OPENSSL_free(mdevp);
138 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
139 return 0;
140 }
141
142 /* Install default entries */
143 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
144 const EVP_MD *md;
145
146 if (dane_mds[i].nid == NID_undef ||
147 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
148 continue;
149 mdevp[dane_mds[i].mtype] = md;
150 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
151 }
152
153 dctx->mdevp = mdevp;
154 dctx->mdord = mdord;
155 dctx->mdmax = mdmax;
156
157 return 1;
158}
159
160static void dane_ctx_final(struct dane_ctx_st *dctx)
161{
162 OPENSSL_free(dctx->mdevp);
163 dctx->mdevp = NULL;
164
165 OPENSSL_free(dctx->mdord);
166 dctx->mdord = NULL;
167 dctx->mdmax = 0;
168}
169
170static void tlsa_free(danetls_record *t)
171{
172 if (t == NULL)
173 return;
174 OPENSSL_free(t->data);
175 EVP_PKEY_free(t->spki);
176 OPENSSL_free(t);
177}
178
b9aec69a 179static void dane_final(SSL_DANE *dane)
919ba009
VD		 180{
181 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
182 dane->trecs = NULL;
183
184 sk_X509_pop_free(dane->certs, X509_free);
185 dane->certs = NULL;
186
187 X509_free(dane->mcert);
188 dane->mcert = NULL;
189 dane->mtlsa = NULL;
190 dane->mdpth = -1;
191 dane->pdpth = -1;
192}
193
194/*
195 * dane_copy - Copy dane configuration, sans verification state.
196 */
197static int ssl_dane_dup(SSL *to, SSL *from)
198{
199 int num;
200 int i;
201
202 if (!DANETLS_ENABLED(&from->dane))
203 return 1;
204
e431363f 205 num = sk_danetls_record_num(from->dane.trecs);
919ba009 206 dane_final(&to->dane);
5ae4ceb9 207 to->dane.flags = from->dane.flags;
9f6b22b8 208 to->dane.dctx = &to->ctx->dane;
7a908204 209 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 210
211 if (to->dane.trecs == NULL) {
212 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
213 return 0;
214 }
919ba009 215
919ba009
VD		 216 for (i = 0; i < num; ++i) {
217 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 218
919ba009
VD		 219 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
220 t->data, t->dlen) <= 0)
221 return 0;
222 }
223 return 1;
224}
225
a230b26e
EK		 226static int dane_mtype_set(struct dane_ctx_st *dctx,
227 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 228{
229 int i;
230
231 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
a230b26e 232 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 233 return 0;
234 }
235
236 if (mtype > dctx->mdmax) {
237 const EVP_MD **mdevp;
238 uint8_t *mdord;
a230b26e 239 int n = ((int)mtype) + 1;
919ba009
VD		 240
241 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
242 if (mdevp == NULL) {
243 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
244 return -1;
245 }
246 dctx->mdevp = mdevp;
247
248 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
249 if (mdord == NULL) {
250 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
251 return -1;
252 }
253 dctx->mdord = mdord;
254
255 /* Zero-fill any gaps */
a230b26e 256 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 257 mdevp[i] = NULL;
258 mdord[i] = 0;
259 }
260
261 dctx->mdmax = mtype;
262 }
263
264 dctx->mdevp[mtype] = md;
265 /* Coerce ordinal of disabled matching types to 0 */
266 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
267
268 return 1;
269}
270
b9aec69a 271static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 272{
273 if (mtype > dane->dctx->mdmax)
274 return NULL;
275 return dane->dctx->mdevp[mtype];
276}
277
a230b26e
EK		 278static int dane_tlsa_add(SSL_DANE *dane,
279 uint8_t usage,
280 uint8_t selector,
a41a6120 281 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 282{
283 danetls_record *t;
284 const EVP_MD *md = NULL;
285 int ilen = (int)dlen;
286 int i;
9f6b22b8 287 int num;
919ba009
VD		 288
289 if (dane->trecs == NULL) {
290 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
291 return -1;
292 }
293
294 if (ilen < 0 || dlen != (size_t)ilen) {
295 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
296 return 0;
297 }
298
299 if (usage > DANETLS_USAGE_LAST) {
300 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
301 return 0;
302 }
303
304 if (selector > DANETLS_SELECTOR_LAST) {
305 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
306 return 0;
307 }
308
309 if (mtype != DANETLS_MATCHING_FULL) {
310 md = tlsa_md_get(dane, mtype);
311 if (md == NULL) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
313 return 0;
314 }
315 }
316
317 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
318 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
319 return 0;
320 }
321 if (!data) {
322 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
323 return 0;
324 }
325
326 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
327 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
328 return -1;
329 }
330
331 t->usage = usage;
332 t->selector = selector;
333 t->mtype = mtype;
348240c6 334 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 335 if (t->data == NULL) {
336 tlsa_free(t);
337 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
338 return -1;
339 }
348240c6
MC		 340 memcpy(t->data, data, dlen);
341 t->dlen = dlen;
919ba009
VD		 342
343 /* Validate and cache full certificate or public key */
344 if (mtype == DANETLS_MATCHING_FULL) {
345 const unsigned char *p = data;
346 X509 *cert = NULL;
347 EVP_PKEY *pkey = NULL;
348
349 switch (selector) {
350 case DANETLS_SELECTOR_CERT:
348240c6 351 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 352 dlen != (size_t)(p - data)) {
353 tlsa_free(t);
354 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
355 return 0;
356 }
357 if (X509_get0_pubkey(cert) == NULL) {
358 tlsa_free(t);
359 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
360 return 0;
361 }
362
363 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
364 X509_free(cert);
365 break;
366 }
367
368 /*
369 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
370 * records that contain full certificates of trust-anchors that are
371 * not present in the wire chain. For usage PKIX-TA(0), we augment
372 * the chain with untrusted Full(0) certificates from DNS, in case
373 * they are missing from the chain.
374 */
375 if ((dane->certs == NULL &&
376 (dane->certs = sk_X509_new_null()) == NULL) ||
377 !sk_X509_push(dane->certs, cert)) {
378 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
379 X509_free(cert);
380 tlsa_free(t);
381 return -1;
382 }
383 break;
384
385 case DANETLS_SELECTOR_SPKI:
348240c6 386 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 387 dlen != (size_t)(p - data)) {
388 tlsa_free(t);
389 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
390 return 0;
391 }
392
393 /*
394 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
395 * records that contain full bare keys of trust-anchors that are
396 * not present in the wire chain.
397 */
398 if (usage == DANETLS_USAGE_DANE_TA)
399 t->spki = pkey;
400 else
401 EVP_PKEY_free(pkey);
402 break;
403 }
404 }
405
406 /*-
407 * Find the right insertion point for the new record.
408 *
409 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
410 * they can be processed first, as they require no chain building, and no
411 * expiration or hostname checks. Because DANE-EE(3) is numerically
412 * largest, this is accomplished via descending sort by "usage".
413 *
414 * We also sort in descending order by matching ordinal to simplify
415 * the implementation of digest agility in the verification code.
416 *
417 * The choice of order for the selector is not significant, so we
418 * use the same descending order for consistency.
419 */
9f6b22b8
VD		 420 num = sk_danetls_record_num(dane->trecs);
421 for (i = 0; i < num; ++i) {
919ba009 422 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 423
919ba009
VD		 424 if (rec->usage > usage)
425 continue;
426 if (rec->usage < usage)
427 break;
428 if (rec->selector > selector)
429 continue;
430 if (rec->selector < selector)
431 break;
432 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
433 continue;
434 break;
435 }
436
437 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
438 tlsa_free(t);
439 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
440 return -1;
441 }
442 dane->umask |= DANETLS_USAGE_BIT(usage);
443
444 return 1;
445}
446
c8feba72
BK		 447/*
448 * Return 0 if there is only one version configured and it was disabled
449 * at configure time. Return 1 otherwise.
450 */
451static int ssl_check_allowed_versions(int min_version, int max_version)
452{
453 int minisdtls = 0, maxisdtls = 0;
454
455 /* Figure out if we're doing DTLS versions or TLS versions */
456 if (min_version == DTLS1_BAD_VER
457 || min_version >> 8 == DTLS1_VERSION_MAJOR)
458 minisdtls = 1;
459 if (max_version == DTLS1_BAD_VER
460 || max_version >> 8 == DTLS1_VERSION_MAJOR)
461 maxisdtls = 1;
462 /* A wildcard version of 0 could be DTLS or TLS. */
463 if ((minisdtls && !maxisdtls && max_version != 0)
464 || (maxisdtls && !minisdtls && min_version != 0)) {
465 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
466 return 0;
467 }
468
469 if (minisdtls || maxisdtls) {
470 /* Do DTLS version checks. */
471 if (min_version == 0)
472 /* Ignore DTLS1_BAD_VER */
473 min_version = DTLS1_VERSION;
474 if (max_version == 0)
475 max_version = DTLS1_2_VERSION;
476#ifdef OPENSSL_NO_DTLS1_2
477 if (max_version == DTLS1_2_VERSION)
478 max_version = DTLS1_VERSION;
479#endif
480#ifdef OPENSSL_NO_DTLS1
481 if (min_version == DTLS1_VERSION)
482 min_version = DTLS1_2_VERSION;
483#endif
79b4444d
DMSP		 484 /* Done massaging versions; do the check. */
485 if (0
c8feba72
BK		 486#ifdef OPENSSL_NO_DTLS1
487 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
488 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
489#endif
490#ifdef OPENSSL_NO_DTLS1_2
491 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
492 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
493#endif
494 )
495 return 0;
496 } else {
497 /* Regular TLS version checks. */
79b4444d
DMSP		 498 if (min_version == 0)
499 min_version = SSL3_VERSION;
500 if (max_version == 0)
501 max_version = TLS1_3_VERSION;
c8feba72 502#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 503 if (max_version == TLS1_3_VERSION)
504 max_version = TLS1_2_VERSION;
c8feba72
BK		 505#endif
506#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 507 if (max_version == TLS1_2_VERSION)
508 max_version = TLS1_1_VERSION;
c8feba72
BK		 509#endif
510#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 511 if (max_version == TLS1_1_VERSION)
512 max_version = TLS1_VERSION;
c8feba72
BK		 513#endif
514#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 515 if (max_version == TLS1_VERSION)
516 max_version = SSL3_VERSION;
c8feba72
BK		 517#endif
518#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 519 if (min_version == SSL3_VERSION)
520 min_version = TLS1_VERSION;
c8feba72
BK		 521#endif
522#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 523 if (min_version == TLS1_VERSION)
524 min_version = TLS1_1_VERSION;
c8feba72
BK		 525#endif
526#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 527 if (min_version == TLS1_1_VERSION)
528 min_version = TLS1_2_VERSION;
c8feba72
BK		 529#endif
530#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 531 if (min_version == TLS1_2_VERSION)
532 min_version = TLS1_3_VERSION;
c8feba72 533#endif
79b4444d
DMSP		 534 /* Done massaging versions; do the check. */
535 if (0
c8feba72
BK		 536#ifdef OPENSSL_NO_SSL3
537 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
538#endif
539#ifdef OPENSSL_NO_TLS1
540 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
541#endif
542#ifdef OPENSSL_NO_TLS1_1
543 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
544#endif
545#ifdef OPENSSL_NO_TLS1_2
546 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
547#endif
548#ifdef OPENSSL_NO_TLS1_3
549 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
550#endif
551 )
552 return 0;
553 }
554 return 1;
555}
556
d31fb0b5
RS		 557static void clear_ciphers(SSL *s)
558{
559 /* clear the current cipher */
560 ssl_clear_cipher_ctx(s);
561 ssl_clear_hash_ctx(&s->read_hash);
562 ssl_clear_hash_ctx(&s->write_hash);
563}
564
4f43d0e7 565int SSL_clear(SSL *s)
0f113f3e 566{
0f113f3e
MC		 567 if (s->method == NULL) {
568 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 569 return 0;
0f113f3e 570 }
d02b48c6 571
0f113f3e
MC		 572 if (ssl_clear_bad_session(s)) {
573 SSL_SESSION_free(s->session);
574 s->session = NULL;
575 }
9368f865
MC		 576 SSL_SESSION_free(s->psksession);
577 s->psksession = NULL;
add8d0e9
MC		 578 OPENSSL_free(s->psksession_id);
579 s->psksession_id = NULL;
580 s->psksession_id_len = 0;
808d1601 581 s->hello_retry_request = 0;
36ff232c 582 s->sent_tickets = 0;
d62bfb39 583
0f113f3e
MC		 584 s->error = 0;
585 s->hit = 0;
586 s->shutdown = 0;
d02b48c6 587
0f113f3e
MC		 588 if (s->renegotiate) {
589 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
590 return 0;
591 }
d02b48c6 592
fe3a3291 593 ossl_statem_clear(s);
413c4f45 594
0f113f3e
MC		 595 s->version = s->method->version;
596 s->client_version = s->version;
597 s->rwstate = SSL_NOTHING;
d02b48c6 598
25aaa98a
RS		 599 BUF_MEM_free(s->init_buf);
600 s->init_buf = NULL;
d31fb0b5 601 clear_ciphers(s);
0f113f3e 602 s->first_packet = 0;
d02b48c6 603
44c04a2e
MC		 604 s->key_update = SSL_KEY_UPDATE_NONE;
605
88834998
TS		 606 EVP_MD_CTX_free(s->pha_dgst);
607 s->pha_dgst = NULL;
608
919ba009
VD		 609 /* Reset DANE verification result state */
610 s->dane.mdpth = -1;
611 s->dane.pdpth = -1;
612 X509_free(s->dane.mcert);
613 s->dane.mcert = NULL;
614 s->dane.mtlsa = NULL;
615
616 /* Clear the verification result peername */
617 X509_VERIFY_PARAM_move_peername(s->param, NULL);
618
29948ac8
BK		 619 /* Clear any shared connection state */
620 OPENSSL_free(s->shared_sigalgs);
621 s->shared_sigalgs = NULL;
622 s->shared_sigalgslen = 0;
623
0f113f3e
MC		 624 /*
625 * Check to see if we were changed into a different method, if so, revert
24252537 626 * back.
0f113f3e 627 */
24252537 628 if (s->method != s->ctx->method) {
0f113f3e
MC		 629 s->method->ssl_free(s);
630 s->method = s->ctx->method;
631 if (!s->method->ssl_new(s))
a89325e4 632 return 0;
b77f3ed1
MC		 633 } else {
634 if (!s->method->ssl_clear(s))
635 return 0;
636 }
33d23b87 637
af9752e5 638 RECORD_LAYER_clear(&s->rlayer);
33d23b87 639
a89325e4 640 return 1;
0f113f3e 641}
d02b48c6 642
4f43d0e7 643/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 644int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
645{
646 STACK_OF(SSL_CIPHER) *sk;
647
648 ctx->method = meth;
649
5d120511 650 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
2340ed27
BK		 651 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
652 return 0;
653 }
f865b081
MC		 654 sk = ssl_create_cipher_list(ctx->method,
655 ctx->tls13_ciphersuites,
656 &(ctx->cipher_list),
0f113f3e 657 &(ctx->cipher_list_by_id),
5d120511 658 OSSL_default_cipher_list(), ctx->cert);
0f113f3e 659 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 660 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 661 return 0;
0f113f3e 662 }
208fb891 663 return 1;
0f113f3e 664}
d02b48c6 665
4f43d0e7 666SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 667{
668 SSL *s;
669
670 if (ctx == NULL) {
671 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 672 return NULL;
0f113f3e
MC		 673 }
674 if (ctx->method == NULL) {
675 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 676 return NULL;
0f113f3e
MC		 677 }
678
b51bce94 679 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 680 if (s == NULL)
681 goto err;
0f113f3e 682
e6b10c34 683 s->references = 1;
16203f7b 684 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 685 if (s->lock == NULL) {
686 OPENSSL_free(s);
687 s = NULL;
ae3947de 688 goto err;
e6b10c34 689 }
ae3947de 690
c036e210 691 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 692
0f113f3e 693 s->options = ctx->options;
5ae4ceb9 694 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 695 s->min_proto_version = ctx->min_proto_version;
696 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 697 s->mode = ctx->mode;
698 s->max_cert_list = ctx->max_cert_list;
3fc8d856 699 s->max_early_data = ctx->max_early_data;
4e8548e8 700 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 701 s->num_tickets = ctx->num_tickets;
e97be718 702 s->pha_enabled = ctx->pha_enabled;
0f113f3e 703
f865b081
MC		 704 /* Shallow copy of the ciphersuites stack */
705 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
706 if (s->tls13_ciphersuites == NULL)
707 goto err;
708
2c382349
KR		 709 /*
710 * Earlier library versions used to copy the pointer to the CERT, not
711 * its contents; only when setting new parameters for the per-SSL
712 * copy, ssl_cert_new would be called (and the direct reference to
713 * the per-SSL_CTX settings would be lost, but those still were
714 * indirectly accessed for various purposes, and for that reason they
715 * used to be known as s->ctx->default_cert). Now we don't look at the
716 * SSL_CTX's CERT after having duplicated it once.
717 */
718 s->cert = ssl_cert_dup(ctx->cert);
719 if (s->cert == NULL)
720 goto err;
0f113f3e 721
52e1d7b1 722 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 723 s->msg_callback = ctx->msg_callback;
724 s->msg_callback_arg = ctx->msg_callback_arg;
725 s->verify_mode = ctx->verify_mode;
726 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 727 s->record_padding_cb = ctx->record_padding_cb;
728 s->record_padding_arg = ctx->record_padding_arg;
729 s->block_padding = ctx->block_padding;
0f113f3e 730 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 731 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 732 goto err;
0f113f3e
MC		 733 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
734 s->verify_callback = ctx->default_verify_callback;
735 s->generate_session_id = ctx->generate_session_id;
736
737 s->param = X509_VERIFY_PARAM_new();
a71edf3b 738 if (s->param == NULL)
0f113f3e
MC		 739 goto err;
740 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 741 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 742
743 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 744 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 745 s->split_send_fragment = ctx->split_send_fragment;
746 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 747 if (s->max_pipelines > 1)
748 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 749 if (ctx->default_read_buf_len > 0)
750 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 751
16203f7b 752 SSL_CTX_up_ref(ctx);
0f113f3e 753 s->ctx = ctx;
aff8c126
RS		 754 s->ext.debug_cb = 0;
755 s->ext.debug_arg = NULL;
756 s->ext.ticket_expected = 0;
757 s->ext.status_type = ctx->ext.status_type;
758 s->ext.status_expected = 0;
759 s->ext.ocsp.ids = NULL;
760 s->ext.ocsp.exts = NULL;
761 s->ext.ocsp.resp = NULL;
762 s->ext.ocsp.resp_len = 0;
16203f7b 763 SSL_CTX_up_ref(ctx);
222da979 764 s->session_ctx = ctx;
a230b26e 765#ifndef OPENSSL_NO_EC
aff8c126
RS		 766 if (ctx->ext.ecpointformats) {
767 s->ext.ecpointformats =
768 OPENSSL_memdup(ctx->ext.ecpointformats,
769 ctx->ext.ecpointformats_len);
770 if (!s->ext.ecpointformats)
0f113f3e 771 goto err;
aff8c126
RS		 772 s->ext.ecpointformats_len =
773 ctx->ext.ecpointformats_len;
774 }
dbc6268f 775#endif
aff8c126
RS		 776 if (ctx->ext.supportedgroups) {
777 s->ext.supportedgroups =
778 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 779 ctx->ext.supportedgroups_len
b92d7b62 780 * sizeof(*ctx->ext.supportedgroups));
aff8c126 781 if (!s->ext.supportedgroups)
0f113f3e 782 goto err;
aff8c126 783 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 784 }
dbc6268f 785
a230b26e 786#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 787 s->ext.npn = NULL;
a230b26e 788#endif
6f017a8f 789
aff8c126
RS		 790 if (s->ctx->ext.alpn) {
791 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
792 if (s->ext.alpn == NULL)
0f113f3e 793 goto err;
aff8c126
RS		 794 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
795 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 796 }
d02b48c6 797
696178ed 798 s->verified_chain = NULL;
0f113f3e 799 s->verify_result = X509_V_OK;
d02b48c6 800
a974e64a
MC		 801 s->default_passwd_callback = ctx->default_passwd_callback;
802 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
803
0f113f3e 804 s->method = ctx->method;
d02b48c6 805
44c04a2e
MC		 806 s->key_update = SSL_KEY_UPDATE_NONE;
807
c9598459
MC		 808 s->allow_early_data_cb = ctx->allow_early_data_cb;
809 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
810
0f113f3e
MC		 811 if (!s->method->ssl_new(s))
812 goto err;
d02b48c6 813
0f113f3e 814 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 815
61986d32 816 if (!SSL_clear(s))
69f68237 817 goto err;
58964a49 818
25a807bc
F		 819 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
820 goto err;
58964a49 821
ddac1974 822#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 823 s->psk_client_callback = ctx->psk_client_callback;
824 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 825#endif
f46184bd
MC		 826 s->psk_find_session_cb = ctx->psk_find_session_cb;
827 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 828
9f5a87fd
PY		 829 s->async_cb = ctx->async_cb;
830 s->async_cb_arg = ctx->async_cb_arg;
831
07bbc92c
MC		 832 s->job = NULL;
833
ed29e82a
RP		 834#ifndef OPENSSL_NO_CT
835 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 836 ctx->ct_validation_callback_arg))
ed29e82a
RP		 837 goto err;
838#endif
839
16203f7b 840 return s;
0f113f3e 841 err:
62adbcee 842 SSL_free(s);
0f113f3e 843 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 844 return NULL;
0f113f3e 845}
d02b48c6 846
e417070c
RS		 847int SSL_is_dtls(const SSL *s)
848{
849 return SSL_IS_DTLS(s) ? 1 : 0;
850}
851
c5ebfcab 852int SSL_up_ref(SSL *s)
a18a31e4 853{
16203f7b 854 int i;
c5ebfcab 855
2f545ae4 856 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 857 return 0;
858
859 REF_PRINT_COUNT("SSL", s);
860 REF_ASSERT_ISNT(i < 2);
861 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 862}
863
0f113f3e
MC		 864int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
865 unsigned int sid_ctx_len)
866{
fe9edc9d 867 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
0f113f3e
MC		 868 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
869 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
870 return 0;
871 }
872 ctx->sid_ctx_length = sid_ctx_len;
873 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 874
875 return 1;
0f113f3e 876}
4eb77b26 877
0f113f3e
MC		 878int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
879 unsigned int sid_ctx_len)
880{
881 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
882 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
883 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
884 return 0;
885 }
886 ssl->sid_ctx_length = sid_ctx_len;
887 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 888
889 return 1;
0f113f3e 890}
b4cadc6e 891
dc644fe2 892int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 893{
16203f7b 894 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 895 ctx->generate_session_id = cb;
16203f7b 896 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 897 return 1;
898}
dc644fe2
GT		 899
900int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 901{
16203f7b 902 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 903 ssl->generate_session_id = cb;
16203f7b 904 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 905 return 1;
906}
dc644fe2 907
f85c9904 908int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 909 unsigned int id_len)
910{
911 /*
912 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 913 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 914 * find if there's a session in the hash table that would conflict with
915 * any new session built out of this id/id_len and the ssl_version in use
916 * by this SSL.
917 */
918 SSL_SESSION r, *p;
919
cbe29648 920 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 921 return 0;
922
923 r.ssl_version = ssl->version;
924 r.session_id_length = id_len;
925 memcpy(r.session_id, id, id_len);
926
e2bb9b9b
TS		 927 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
928 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
929 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 930 return (p != NULL);
931}
dc644fe2 932
bb7cd4e3 933int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 934{
935 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
936}
bb7cd4e3
DSH		 937
938int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 939{
940 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
941}
926a56bf 942
bb7cd4e3 943int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 944{
945 return X509_VERIFY_PARAM_set_trust(s->param, trust);
946}
bb7cd4e3
DSH		 947
948int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 949{
950 return X509_VERIFY_PARAM_set_trust(s->param, trust);
951}
bb7cd4e3 952
919ba009
VD		 953int SSL_set1_host(SSL *s, const char *hostname)
954{
955 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
956}
957
958int SSL_add1_host(SSL *s, const char *hostname)
959{
960 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
961}
962
963void SSL_set_hostflags(SSL *s, unsigned int flags)
964{
965 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
966}
967
4588cb44 968const char *SSL_get0_peername(SSL *s)
919ba009
VD		 969{
970 return X509_VERIFY_PARAM_get0_peername(s->param);
971}
972
973int SSL_CTX_dane_enable(SSL_CTX *ctx)
974{
975 return dane_ctx_enable(&ctx->dane);
976}
977
5ae4ceb9
VD		 978unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
979{
980 unsigned long orig = ctx->dane.flags;
981
982 ctx->dane.flags |= flags;
983 return orig;
984}
985
986unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
987{
988 unsigned long orig = ctx->dane.flags;
989
990 ctx->dane.flags &= ~flags;
991 return orig;
992}
993
919ba009
VD		 994int SSL_dane_enable(SSL *s, const char *basedomain)
995{
b9aec69a 996 SSL_DANE *dane = &s->dane;
919ba009
VD		 997
998 if (s->ctx->dane.mdmax == 0) {
999 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1000 return 0;
1001 }
1002 if (dane->trecs != NULL) {
1003 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1004 return 0;
1005 }
1006
8d887efa
VD		 1007 /*
1008 * Default SNI name. This rejects empty names, while set1_host below
1009 * accepts them and disables host name checks. To avoid side-effects with
1010 * invalid input, set the SNI name first.
1011 */
aff8c126 1012 if (s->ext.hostname == NULL) {
dccd20d1 1013 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 1014 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1015 return -1;
8d887efa
VD		 1016 }
1017 }
1018
919ba009
VD		 1019 /* Primary RFC6125 reference identifier */
1020 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1021 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1022 return -1;
1023 }
1024
919ba009
VD		 1025 dane->mdpth = -1;
1026 dane->pdpth = -1;
1027 dane->dctx = &s->ctx->dane;
1028 dane->trecs = sk_danetls_record_new_null();
1029
1030 if (dane->trecs == NULL) {
1031 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1032 return -1;
1033 }
1034 return 1;
1035}
1036
5ae4ceb9
VD		 1037unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1038{
1039 unsigned long orig = ssl->dane.flags;
1040
1041 ssl->dane.flags |= flags;
1042 return orig;
1043}
1044
1045unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1046{
1047 unsigned long orig = ssl->dane.flags;
1048
1049 ssl->dane.flags &= ~flags;
1050 return orig;
1051}
1052
919ba009
VD		 1053int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1054{
b9aec69a 1055 SSL_DANE *dane = &s->dane;
919ba009 1056
c0a445a9 1057 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1058 return -1;
1059 if (dane->mtlsa) {
1060 if (mcert)
1061 *mcert = dane->mcert;
1062 if (mspki)
1063 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1064 }
1065 return dane->mdpth;
1066}
1067
1068int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1069 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1070{
b9aec69a 1071 SSL_DANE *dane = &s->dane;
919ba009 1072
c0a445a9 1073 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1074 return -1;
1075 if (dane->mtlsa) {
1076 if (usage)
1077 *usage = dane->mtlsa->usage;
1078 if (selector)
1079 *selector = dane->mtlsa->selector;
1080 if (mtype)
1081 *mtype = dane->mtlsa->mtype;
1082 if (data)
1083 *data = dane->mtlsa->data;
1084 if (dlen)
1085 *dlen = dane->mtlsa->dlen;
1086 }
1087 return dane->mdpth;
1088}
1089
b9aec69a 1090SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1091{
1092 return &s->dane;
1093}
1094
1095int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
a41a6120 1096 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 1097{
1098 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1099}
1100
a230b26e
EK		 1101int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1102 uint8_t ord)
919ba009
VD		 1103{
1104 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1105}
1106
ccf11751 1107int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1108{
1109 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1110}
ccf11751
DSH		 1111
1112int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1113{
1114 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1115}
ccf11751 1116
7af31968 1117X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1118{
1119 return ctx->param;
1120}
7af31968
DSH		 1121
1122X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1123{
1124 return ssl->param;
1125}
7af31968 1126
a5ee80b9 1127void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1128{
1129 ssl_cert_clear_certs(s->cert);
1130}
a5ee80b9 1131
4f43d0e7 1132void SSL_free(SSL *s)
0f113f3e
MC		 1133{
1134 int i;
58964a49 1135
e6e9170d
RS		 1136 if (s == NULL)
1137 return;
2f545ae4 1138 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1139 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1140 if (i > 0)
1141 return;
f3f1cf84 1142 REF_ASSERT_ISNT(i < 0);
d02b48c6 1143
222561fe 1144 X509_VERIFY_PARAM_free(s->param);
919ba009 1145 dane_final(&s->dane);
0f113f3e
MC		 1146 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1147
50ec7505
BP		 1148 RECORD_LAYER_release(&s->rlayer);
1149
b77f3ed1 1150 /* Ignore return value */
2e7dc7cd
MC		 1151 ssl_free_wbio_buffer(s);
1152
65e2d672 1153 BIO_free_all(s->wbio);
50ec7505 1154 s->wbio = NULL;
325cfa85 1155 BIO_free_all(s->rbio);
50ec7505 1156 s->rbio = NULL;
0f113f3e 1157
25aaa98a 1158 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1159
1160 /* add extra stuff */
25aaa98a
RS		 1161 sk_SSL_CIPHER_free(s->cipher_list);
1162 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1163 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
eee2a6a7 1164 sk_SSL_CIPHER_free(s->peer_ciphers);
0f113f3e
MC		 1165
1166 /* Make the next call work :-) */
1167 if (s->session != NULL) {
1168 ssl_clear_bad_session(s);
1169 SSL_SESSION_free(s->session);
1170 }
9368f865 1171 SSL_SESSION_free(s->psksession);
add8d0e9 1172 OPENSSL_free(s->psksession_id);
0f113f3e 1173
d31fb0b5 1174 clear_ciphers(s);
d02b48c6 1175
e0e920b1 1176 ssl_cert_free(s->cert);
29948ac8 1177 OPENSSL_free(s->shared_sigalgs);
0f113f3e 1178 /* Free up if allocated */
d02b48c6 1179
aff8c126 1180 OPENSSL_free(s->ext.hostname);
222da979 1181 SSL_CTX_free(s->session_ctx);
e481f9b9 1182#ifndef OPENSSL_NO_EC
aff8c126 1183 OPENSSL_free(s->ext.ecpointformats);
cd0fb43c 1184 OPENSSL_free(s->ext.peer_ecpointformats);
187753e0 1185#endif /* OPENSSL_NO_EC */
aff8c126 1186 OPENSSL_free(s->ext.supportedgroups);
45436e61 1187 OPENSSL_free(s->ext.peer_supportedgroups);
aff8c126 1188 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1189#ifndef OPENSSL_NO_OCSP
aff8c126 1190 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1191#endif
ed29e82a
RP		 1192#ifndef OPENSSL_NO_CT
1193 SCT_LIST_free(s->scts);
aff8c126 1194 OPENSSL_free(s->ext.scts);
ed29e82a 1195#endif
aff8c126
RS		 1196 OPENSSL_free(s->ext.ocsp.resp);
1197 OPENSSL_free(s->ext.alpn);
cfef5027 1198 OPENSSL_free(s->ext.tls13_cookie);
94941cad
MK		 1199 if (s->clienthello != NULL)
1200 OPENSSL_free(s->clienthello->pre_proc_exts);
6b1bb98f 1201 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1202 OPENSSL_free(s->pha_context);
1203 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1204
fa7c2637 1205 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1206 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1207
696178ed
DSH		 1208 sk_X509_pop_free(s->verified_chain, X509_free);
1209
0f113f3e
MC		 1210 if (s->method != NULL)
1211 s->method->ssl_free(s);
1212
e0e920b1 1213 SSL_CTX_free(s->ctx);
7c3908dd 1214
ff75a257
MC		 1215 ASYNC_WAIT_CTX_free(s->waitctx);
1216
e481f9b9 1217#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1218 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1219#endif
1220
e783bae2 1221#ifndef OPENSSL_NO_SRTP
25aaa98a 1222 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1223#endif
1224
16203f7b
AG		 1225 CRYPTO_THREAD_lock_free(s->lock);
1226
0f113f3e
MC		 1227 OPENSSL_free(s);
1228}
1229
65e2d672 1230void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1231{
65e2d672 1232 BIO_free_all(s->rbio);
3ffbe008
MC		 1233 s->rbio = rbio;
1234}
1235
65e2d672 1236void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1237{
1238 /*
1239 * If the output buffering BIO is still in place, remove it
1240 */
2e7dc7cd
MC		 1241 if (s->bbio != NULL)
1242 s->wbio = BIO_pop(s->wbio);
1243
65e2d672 1244 BIO_free_all(s->wbio);
0f113f3e 1245 s->wbio = wbio;
2e7dc7cd
MC		 1246
1247 /* Re-attach |bbio| to the new |wbio|. */
1248 if (s->bbio != NULL)
1249 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1250}
d02b48c6 1251
3ffbe008
MC		 1252void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1253{
65e2d672
MC		 1254 /*
1255 * For historical reasons, this function has many different cases in
1256 * ownership handling.
1257 */
1258
1259 /* If nothing has changed, do nothing */
1260 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1261 return;
1262
1263 /*
1264 * If the two arguments are equal then one fewer reference is granted by the
1265 * caller than we want to take
1266 */
1267 if (rbio != NULL && rbio == wbio)
1268 BIO_up_ref(rbio);
1269
1270 /*
1271 * If only the wbio is changed only adopt one reference.
1272 */
1273 if (rbio == SSL_get_rbio(s)) {
1274 SSL_set0_wbio(s, wbio);
1275 return;
1276 }
1277 /*
1278 * There is an asymmetry here for historical reasons. If only the rbio is
1279 * changed AND the rbio and wbio were originally different, then we only
1280 * adopt one reference.
1281 */
1282 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1283 SSL_set0_rbio(s, rbio);
1284 return;
1285 }
1286
1287 /* Otherwise, adopt both references. */
1288 SSL_set0_rbio(s, rbio);
1289 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1290}
1291
0821bcd4 1292BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1293{
2e7dc7cd 1294 return s->rbio;
0f113f3e 1295}
d02b48c6 1296
0821bcd4 1297BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1298{
2e7dc7cd
MC		 1299 if (s->bbio != NULL) {
1300 /*
1301 * If |bbio| is active, the true caller-configured BIO is its
1302 * |next_bio|.
1303 */
1304 return BIO_next(s->bbio);
1305 }
1306 return s->wbio;
0f113f3e 1307}
d02b48c6 1308
0821bcd4 1309int SSL_get_fd(const SSL *s)
0f113f3e 1310{
2e7dc7cd 1311 return SSL_get_rfd(s);
0f113f3e 1312}
24cbf3ef 1313
0821bcd4 1314int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1315{
1316 int ret = -1;
1317 BIO *b, *r;
1318
1319 b = SSL_get_rbio(s);
1320 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1321 if (r != NULL)
1322 BIO_get_fd(r, &ret);
26a7d938 1323 return ret;
0f113f3e 1324}
d02b48c6 1325
0821bcd4 1326int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1327{
1328 int ret = -1;
1329 BIO *b, *r;
1330
1331 b = SSL_get_wbio(s);
1332 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1333 if (r != NULL)
1334 BIO_get_fd(r, &ret);
26a7d938 1335 return ret;
0f113f3e 1336}
24cbf3ef 1337
bc36ee62 1338#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1339int SSL_set_fd(SSL *s, int fd)
1340{
1341 int ret = 0;
1342 BIO *bio = NULL;
1343
1344 bio = BIO_new(BIO_s_socket());
1345
1346 if (bio == NULL) {
1347 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1348 goto err;
1349 }
1350 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1351 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1352#ifndef OPENSSL_NO_KTLS
1353 /*
1354 * The new socket is created successfully regardless of ktls_enable.
1355 * ktls_enable doesn't change any functionality of the socket, except
1356 * changing the setsockopt to enable the processing of ktls_start.
1357 * Thus, it is not a problem to call it for non-TLS sockets.
1358 */
1359 ktls_enable(fd);
1360#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1361 ret = 1;
1362 err:
26a7d938 1363 return ret;
0f113f3e 1364}
d02b48c6 1365
0f113f3e
MC		 1366int SSL_set_wfd(SSL *s, int fd)
1367{
2e7dc7cd 1368 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1369
2e7dc7cd
MC		 1370 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1371 || (int)BIO_get_fd(rbio, NULL) != fd) {
1372 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1373
1374 if (bio == NULL) {
1375 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1376 return 0;
0f113f3e
MC		 1377 }
1378 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1379 SSL_set0_wbio(s, bio);
50ec7505
BP		 1380#ifndef OPENSSL_NO_KTLS
1381 /*
1382 * The new socket is created successfully regardless of ktls_enable.
1383 * ktls_enable doesn't change any functionality of the socket, except
1384 * changing the setsockopt to enable the processing of ktls_start.
1385 * Thus, it is not a problem to call it for non-TLS sockets.
1386 */
1387 ktls_enable(fd);
1388#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1389 } else {
65e2d672
MC		 1390 BIO_up_ref(rbio);
1391 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1392 }
1393 return 1;
0f113f3e
MC		 1394}
1395
1396int SSL_set_rfd(SSL *s, int fd)
1397{
2e7dc7cd 1398 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1399
2e7dc7cd
MC		 1400 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1401 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1402 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1403
1404 if (bio == NULL) {
1405 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1406 return 0;
0f113f3e
MC		 1407 }
1408 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1409 SSL_set0_rbio(s, bio);
2e7dc7cd 1410 } else {
65e2d672
MC		 1411 BIO_up_ref(wbio);
1412 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1413 }
1414
1415 return 1;
0f113f3e
MC		 1416}
1417#endif
ca03109c
BM		 1418
1419/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1420size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1421{
1422 size_t ret = 0;
1423
555cbb32
TS		 1424 ret = s->s3.tmp.finish_md_len;
1425 if (count > ret)
1426 count = ret;
1427 memcpy(buf, s->s3.tmp.finish_md, count);
0f113f3e
MC		 1428 return ret;
1429}
ca03109c
BM		 1430
1431/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1432size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1433{
1434 size_t ret = 0;
ca03109c 1435
555cbb32
TS		 1436 ret = s->s3.tmp.peer_finish_md_len;
1437 if (count > ret)
1438 count = ret;
1439 memcpy(buf, s->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1440 return ret;
1441}
ca03109c 1442
0821bcd4 1443int SSL_get_verify_mode(const SSL *s)
0f113f3e 1444{
26a7d938 1445 return s->verify_mode;
0f113f3e 1446}
d02b48c6 1447
0821bcd4 1448int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1449{
1450 return X509_VERIFY_PARAM_get_depth(s->param);
1451}
7f89714e 1452
0f113f3e 1453int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1454 return s->verify_callback;
0f113f3e 1455}
d02b48c6 1456
0821bcd4 1457int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1458{
26a7d938 1459 return ctx->verify_mode;
0f113f3e 1460}
d02b48c6 1461
0821bcd4 1462int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1463{
1464 return X509_VERIFY_PARAM_get_depth(ctx->param);
1465}
1466
1467int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1468 return ctx->default_verify_callback;
0f113f3e
MC		 1469}
1470
1471void SSL_set_verify(SSL *s, int mode,
1472 int (*callback) (int ok, X509_STORE_CTX *ctx))
1473{
1474 s->verify_mode = mode;
1475 if (callback != NULL)
1476 s->verify_callback = callback;
1477}
1478
1479void SSL_set_verify_depth(SSL *s, int depth)
1480{
1481 X509_VERIFY_PARAM_set_depth(s->param, depth);
1482}
1483
1484void SSL_set_read_ahead(SSL *s, int yes)
1485{
52e1d7b1 1486 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1487}
d02b48c6 1488
0821bcd4 1489int SSL_get_read_ahead(const SSL *s)
0f113f3e 1490{
52e1d7b1 1491 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1492}
d02b48c6 1493
0821bcd4 1494int SSL_pending(const SSL *s)
0f113f3e 1495{
8b0e934a
MC		 1496 size_t pending = s->method->ssl_pending(s);
1497
0f113f3e
MC		 1498 /*
1499 * SSL_pending cannot work properly if read-ahead is enabled
1500 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1501 * impossible to fix since SSL_pending cannot report errors that may be
1502 * observed while scanning the new data. (Note that SSL_pending() is
1503 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1504 *
1505 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1506 * we just return INT_MAX.
0f113f3e 1507 */
348240c6 1508 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1509}
d02b48c6 1510
49580f25
MC		 1511int SSL_has_pending(const SSL *s)
1512{
1513 /*
1514 * Similar to SSL_pending() but returns a 1 to indicate that we have
1515 * unprocessed data available or 0 otherwise (as opposed to the number of
1516 * bytes available). Unlike SSL_pending() this will take into account
1517 * read_ahead data. A 1 return simply indicates that we have unprocessed
1518 * data. That data may not result in any application data, or we may fail
1519 * to parse the records for some reason.
1520 */
b8c49611 1521 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1522 return 1;
1523
1524 return RECORD_LAYER_read_pending(&s->rlayer);
1525}
1526
0821bcd4 1527X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1528{
1529 X509 *r;
d02b48c6 1530
0f113f3e
MC		 1531 if ((s == NULL) || (s->session == NULL))
1532 r = NULL;
1533 else
1534 r = s->session->peer;
d02b48c6 1535
0f113f3e 1536 if (r == NULL)
26a7d938 1537 return r;
d02b48c6 1538
05f0fb9f 1539 X509_up_ref(r);
0f113f3e 1540
26a7d938 1541 return r;
0f113f3e 1542}
d02b48c6 1543
0821bcd4 1544STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1545{
1546 STACK_OF(X509) *r;
1547
c34b0f99 1548 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1549 r = NULL;
1550 else
c34b0f99 1551 r = s->session->peer_chain;
0f113f3e
MC		 1552
1553 /*
1554 * If we are a client, cert_chain includes the peer's own certificate; if
1555 * we are a server, it does not.
1556 */
1557
26a7d938 1558 return r;
0f113f3e
MC		 1559}
1560
1561/*
1562 * Now in theory, since the calling process own 't' it should be safe to
1563 * modify. We need to be able to read f without being hassled
1564 */
17dd65e6 1565int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1566{
16203f7b 1567 int i;
0f113f3e 1568 /* Do we need to to SSL locking? */
61986d32 1569 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1570 return 0;
69f68237 1571 }
0f113f3e
MC		 1572
1573 /*
87d9cafa 1574 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1575 */
1576 if (t->method != f->method) {
919ba009
VD		 1577 t->method->ssl_free(t);
1578 t->method = f->method;
1579 if (t->method->ssl_new(t) == 0)
1580 return 0;
0f113f3e
MC		 1581 }
1582
2f545ae4 1583 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1584 ssl_cert_free(t->cert);
1585 t->cert = f->cert;
348240c6 1586 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1587 return 0;
69f68237 1588 }
17dd65e6
MC		 1589
1590 return 1;
0f113f3e 1591}
d02b48c6 1592
58964a49 1593/* Fix this so it checks all the valid key/cert options */
0821bcd4 1594int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1595{
a230b26e
EK		 1596 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1597 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1598 return 0;
0f113f3e
MC		 1599 }
1600 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1601 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1602 return 0;
0f113f3e 1603 }
26a7d938
K		 1604 return X509_check_private_key
1605 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1606}
d02b48c6 1607
58964a49 1608/* Fix this function so that it takes an optional type parameter */
0821bcd4 1609int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1610{
1611 if (ssl == NULL) {
1612 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1613 return 0;
0f113f3e 1614 }
0f113f3e
MC		 1615 if (ssl->cert->key->x509 == NULL) {
1616 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1617 return 0;
0f113f3e
MC		 1618 }
1619 if (ssl->cert->key->privatekey == NULL) {
1620 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1621 return 0;
0f113f3e 1622 }
26a7d938
K		 1623 return X509_check_private_key(ssl->cert->key->x509,
1624 ssl->cert->key->privatekey);
0f113f3e 1625}
d02b48c6 1626
07bbc92c
MC		 1627int SSL_waiting_for_async(SSL *s)
1628{
e8aa8b6c 1629 if (s->job)
82676094
MC		 1630 return 1;
1631
07bbc92c
MC		 1632 return 0;
1633}
1634
ff75a257 1635int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1636{
ff75a257
MC		 1637 ASYNC_WAIT_CTX *ctx = s->waitctx;
1638
1639 if (ctx == NULL)
1640 return 0;
1641 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1642}
f4da39d2 1643
ff75a257
MC		 1644int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1645 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1646{
1647 ASYNC_WAIT_CTX *ctx = s->waitctx;
1648
1649 if (ctx == NULL)
1650 return 0;
1651 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1652 numdelfds);
f4da39d2
MC		 1653}
1654
9f5a87fd
PY		 1655int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1656{
1657 ctx->async_cb = callback;
1658 return 1;
1659}
1660
1661int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1662{
1663 ctx->async_cb_arg = arg;
1664 return 1;
1665}
1666
1667int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1668{
1669 s->async_cb = callback;
1670 return 1;
1671}
1672
1673int SSL_set_async_callback_arg(SSL *s, void *arg)
1674{
1675 s->async_cb_arg = arg;
1676 return 1;
1677}
1678
1679int SSL_get_async_status(SSL *s, int *status)
1680{
1681 ASYNC_WAIT_CTX *ctx = s->waitctx;
1682
1683 if (ctx == NULL)
1684 return 0;
1685 *status = ASYNC_WAIT_CTX_get_status(ctx);
1686 return 1;
1687}
1688
4f43d0e7 1689int SSL_accept(SSL *s)
0f113f3e 1690{
c4c32155 1691 if (s->handshake_func == NULL) {
0f113f3e
MC		 1692 /* Not properly initialized yet */
1693 SSL_set_accept_state(s);
07bbc92c 1694 }
add2f5ca
MC		 1695
1696 return SSL_do_handshake(s);
0f113f3e 1697}
d02b48c6 1698
4f43d0e7 1699int SSL_connect(SSL *s)
0f113f3e 1700{
c4c32155 1701 if (s->handshake_func == NULL) {
0f113f3e
MC		 1702 /* Not properly initialized yet */
1703 SSL_set_connect_state(s);
add2f5ca 1704 }
b31b04d9 1705
add2f5ca 1706 return SSL_do_handshake(s);
0f113f3e 1707}
d02b48c6 1708
0821bcd4 1709long SSL_get_default_timeout(const SSL *s)
0f113f3e 1710{
26a7d938 1711 return s->method->get_timeout();
0f113f3e
MC		 1712}
1713
9f5a87fd
PY		 1714static int ssl_async_wait_ctx_cb(void *arg)
1715{
1716 SSL *s = (SSL *)arg;
1717
1718 return s->async_cb(s, s->async_cb_arg);
1719}
1720
7fecbf6f 1721static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1722 int (*func) (void *))
1723{
add2f5ca 1724 int ret;
ff75a257
MC		 1725 if (s->waitctx == NULL) {
1726 s->waitctx = ASYNC_WAIT_CTX_new();
1727 if (s->waitctx == NULL)
1728 return -1;
9f5a87fd
PY		 1729 if (s->async_cb != NULL
1730 && !ASYNC_WAIT_CTX_set_callback
1731 (s->waitctx, ssl_async_wait_ctx_cb, s))
1732 return -1;
ff75a257 1733 }
e8aa8b6c 1734 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1735 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1736 case ASYNC_ERR:
1737 s->rwstate = SSL_NOTHING;
7fecbf6f 1738 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1739 return -1;
1740 case ASYNC_PAUSE:
1741 s->rwstate = SSL_ASYNC_PAUSED;
1742 return -1;
fc7f190c
MC		 1743 case ASYNC_NO_JOBS:
1744 s->rwstate = SSL_ASYNC_NO_JOBS;
1745 return -1;
add2f5ca
MC		 1746 case ASYNC_FINISH:
1747 s->job = NULL;
1748 return ret;
1749 default:
1750 s->rwstate = SSL_NOTHING;
7fecbf6f 1751 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1752 /* Shouldn't happen */
1753 return -1;
1754 }
1755}
07bbc92c 1756
add2f5ca 1757static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1758{
1759 struct ssl_async_args *args;
1760 SSL *s;
1761 void *buf;
348240c6 1762 size_t num;
07bbc92c
MC		 1763
1764 args = (struct ssl_async_args *)vargs;
1765 s = args->s;
1766 buf = args->buf;
1767 num = args->num;
ec447924
MC		 1768 switch (args->type) {
1769 case READFUNC:
7ee8627f 1770 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1771 case WRITEFUNC:
7ee8627f 1772 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1773 case OTHERFUNC:
1774 return args->f.func_other(s);
1775 }
1776 return -1;
07bbc92c
MC		 1777}
1778
4ee7d3f9 1779int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1780{
c4c32155 1781 if (s->handshake_func == NULL) {
4ee7d3f9 1782 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1783 return -1;
1784 }
1785
1786 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1787 s->rwstate = SSL_NOTHING;
4ee7d3f9 1788 return 0;
0f113f3e 1789 }
07bbc92c 1790
564547e4
MC		 1791 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1792 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1793 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1794 return 0;
1795 }
564547e4
MC		 1796 /*
1797 * If we are a client and haven't received the ServerHello etc then we
1798 * better do that
1799 */
1800 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1801
e8aa8b6c 1802 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1803 struct ssl_async_args args;
eda75751 1804 int ret;
add2f5ca
MC		 1805
1806 args.s = s;
1807 args.buf = buf;
1808 args.num = num;
ec447924
MC		 1809 args.type = READFUNC;
1810 args.f.func_read = s->method->ssl_read;
add2f5ca 1811
eda75751 1812 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1813 *readbytes = s->asyncrw;
eda75751 1814 return ret;
07bbc92c 1815 } else {
54105ddd 1816 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1817 }
0f113f3e
MC		 1818}
1819
4ee7d3f9 1820int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1821{
1822 int ret;
54105ddd 1823 size_t readbytes;
eda75751
MC		 1824
1825 if (num < 0) {
4ee7d3f9 1826 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1827 return -1;
1828 }
1829
4ee7d3f9 1830 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1831
1832 /*
1833 * The cast is safe here because ret should be <= INT_MAX because num is
1834 * <= INT_MAX
1835 */
1836 if (ret > 0)
54105ddd 1837 ret = (int)readbytes;
eda75751
MC		 1838
1839 return ret;
1840}
1841
4ee7d3f9
KR		 1842int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1843{
1844 int ret = ssl_read_internal(s, buf, num, readbytes);
1845
1846 if (ret < 0)
1847 ret = 0;
1848 return ret;
1849}
1850
f533fbd4 1851int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1852{
1853 int ret;
1854
1855 if (!s->server) {
f533fbd4
MC		 1856 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1857 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1858 }
1859
d781d247
MC		 1860 switch (s->early_data_state) {
1861 case SSL_EARLY_DATA_NONE:
1862 if (!SSL_in_before(s)) {
f533fbd4
MC		 1863 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1864 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1865 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1866 }
1867 /* fall through */
1868
1869 case SSL_EARLY_DATA_ACCEPT_RETRY:
1870 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1871 ret = SSL_accept(s);
1872 if (ret <= 0) {
1873 /* NBIO or error */
1874 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1875 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1876 }
1877 /* fall through */
1878
1879 case SSL_EARLY_DATA_READ_RETRY:
1880 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1881 s->early_data_state = SSL_EARLY_DATA_READING;
1882 ret = SSL_read_ex(s, buf, num, readbytes);
1883 /*
ef6c191b
MC		 1884 * State machine will update early_data_state to
1885 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1886 * message
d781d247
MC		 1887 */
1888 if (ret > 0 || (ret <= 0 && s->early_data_state
1889 != SSL_EARLY_DATA_FINISHED_READING)) {
1890 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1891 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1892 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1893 }
1894 } else {
1895 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1896 }
1897 *readbytes = 0;
f533fbd4 1898 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1899
1900 default:
f533fbd4
MC		 1901 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1902 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1903 }
1904}
1905
f5b519c4 1906int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1907{
1908 return s->ext.early_data;
1909}
1910
4ee7d3f9 1911static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1912{
c4c32155 1913 if (s->handshake_func == NULL) {
4ee7d3f9 1914 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1915 return -1;
1916 }
1917
1918 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1919 return 0;
0f113f3e 1920 }
e8aa8b6c 1921 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1922 struct ssl_async_args args;
eda75751 1923 int ret;
0f113f3e 1924
add2f5ca
MC		 1925 args.s = s;
1926 args.buf = buf;
1927 args.num = num;
ec447924
MC		 1928 args.type = READFUNC;
1929 args.f.func_read = s->method->ssl_peek;
07bbc92c 1930
eda75751 1931 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1932 *readbytes = s->asyncrw;
eda75751 1933 return ret;
add2f5ca 1934 } else {
54105ddd 1935 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1936 }
07bbc92c
MC		 1937}
1938
4ee7d3f9 1939int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1940{
1941 int ret;
4ee7d3f9 1942 size_t readbytes;
7ee8627f
MC		 1943
1944 if (num < 0) {
4ee7d3f9 1945 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1946 return -1;
1947 }
1948
4ee7d3f9 1949 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1950
1951 /*
1952 * The cast is safe here because ret should be <= INT_MAX because num is
1953 * <= INT_MAX
1954 */
1955 if (ret > 0)
4ee7d3f9 1956 ret = (int)readbytes;
7ee8627f
MC		 1957
1958 return ret;
1959}
1960
4ee7d3f9
KR		 1961
1962int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1963{
1964 int ret = ssl_peek_internal(s, buf, num, readbytes);
1965
1966 if (ret < 0)
1967 ret = 0;
1968 return ret;
1969}
1970
1971int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1972{
c4c32155 1973 if (s->handshake_func == NULL) {
4ee7d3f9 1974 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1975 return -1;
1976 }
1977
1978 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1979 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1980 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1981 return -1;
0f113f3e 1982 }
07bbc92c 1983
ef6c191b 1984 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1985 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1986 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1987 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1988 return 0;
0a5ece5b 1989 }
564547e4
MC		 1990 /* If we are a client and haven't sent the Finished we better do that */
1991 ossl_statem_check_finish_init(s, 1);
49e7fe12 1992
e8aa8b6c 1993 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1994 int ret;
add2f5ca
MC		 1995 struct ssl_async_args args;
1996
1997 args.s = s;
1998 args.buf = (void *)buf;
1999 args.num = num;
ec447924
MC		 2000 args.type = WRITEFUNC;
2001 args.f.func_write = s->method->ssl_write;
add2f5ca 2002
7ee8627f
MC		 2003 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2004 *written = s->asyncrw;
2005 return ret;
07bbc92c 2006 } else {
7ee8627f 2007 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2008 }
0f113f3e 2009}
d02b48c6 2010
7c3a7561
BP		 2011ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2012{
2013 ossl_ssize_t ret;
2014
2015 if (s->handshake_func == NULL) {
2016 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2017 return -1;
2018 }
2019
2020 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2021 s->rwstate = SSL_NOTHING;
2022 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2023 return -1;
2024 }
2025
2026 if (!BIO_get_ktls_send(s->wbio)) {
2027 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2028 return -1;
2029 }
2030
2031 /* If we have an alert to send, lets send it */
2032 if (s->s3.alert_dispatch) {
2033 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2034 if (ret <= 0) {
2035 /* SSLfatal() already called if appropriate */
2036 return ret;
2037 }
2038 /* if it went, fall through and send more stuff */
2039 }
2040
2041 s->rwstate = SSL_WRITING;
2042 if (BIO_flush(s->wbio) <= 0) {
2043 if (!BIO_should_retry(s->wbio)) {
2044 s->rwstate = SSL_NOTHING;
2045 } else {
2046#ifdef EAGAIN
2047 set_sys_error(EAGAIN);
2048#endif
2049 }
2050 return -1;
2051 }
2052
712c0942 2053#ifdef OPENSSL_NO_KTLS
fa7a8074
RL		 2054 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2055 "can't call ktls_sendfile(), ktls disabled");
712c0942 2056 return -1;
7c3a7561 2057#else
712c0942 2058 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
7c3a7561
BP		 2059 if (ret < 0) {
2060#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2061 if ((get_last_sys_error() == EAGAIN) ||
2062 (get_last_sys_error() == EINTR) ||
2063 (get_last_sys_error() == EBUSY))
2064 BIO_set_retry_write(s->wbio);
2065 else
2066#endif
7c3a7561 2067 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2068 return ret;
2069 }
2070 s->rwstate = SSL_NOTHING;
2071 return ret;
712c0942 2072#endif
7c3a7561
BP		 2073}
2074
4ee7d3f9
KR		 2075int SSL_write(SSL *s, const void *buf, int num)
2076{
2077 int ret;
2078 size_t written;
2079
2080 if (num < 0) {
2081 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2082 return -1;
2083 }
2084
2085 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2086
2087 /*
2088 * The cast is safe here because ret should be <= INT_MAX because num is
2089 * <= INT_MAX
2090 */
2091 if (ret > 0)
2092 ret = (int)written;
2093
2094 return ret;
2095}
2096
2097int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2098{
2099 int ret = ssl_write_internal(s, buf, num, written);
2100
2101 if (ret < 0)
2102 ret = 0;
2103 return ret;
2104}
2105
0665b4ed 2106int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2107{
a0cb628b 2108 int ret, early_data_state;
2a8db717 2109 size_t writtmp;
f7414b08 2110 uint32_t partialwrite;
49e7fe12 2111
49e7fe12
MC		 2112 switch (s->early_data_state) {
2113 case SSL_EARLY_DATA_NONE:
09f28874
MC		 2114 if (s->server
2115 || !SSL_in_before(s)
add8d0e9
MC		 2116 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2117 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 2118 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2119 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2120 return 0;
2121 }
2122 /* fall through */
2123
2124 case SSL_EARLY_DATA_CONNECT_RETRY:
2125 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2126 ret = SSL_connect(s);
2127 if (ret <= 0) {
2128 /* NBIO or error */
2129 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2130 return 0;
2131 }
2132 /* fall through */
2133
2134 case SSL_EARLY_DATA_WRITE_RETRY:
2135 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2136 /*
2137 * We disable partial write for early data because we don't keep track
2138 * of how many bytes we've written between the SSL_write_ex() call and
2139 * the flush if the flush needs to be retried)
2140 */
2141 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2142 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2143 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2144 s->mode |= partialwrite;
2a8db717
MC		 2145 if (!ret) {
2146 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2147 return ret;
2148 }
2149 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2150 /* fall through */
2151
2152 case SSL_EARLY_DATA_WRITE_FLUSH:
2153 /* The buffering BIO is still in place so we need to flush it */
2154 if (statem_flush(s) != 1)
2155 return 0;
2a8db717 2156 *written = num;
49e7fe12 2157 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2158 return 1;
49e7fe12 2159
116d0da5 2160 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2161 case SSL_EARLY_DATA_READ_RETRY:
2162 early_data_state = s->early_data_state;
09f28874
MC		 2163 /* We are a server writing to an unauthenticated client */
2164 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2165 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2166 /* The buffering BIO is still in place */
2167 if (ret)
2168 (void)BIO_flush(s->wbio);
bbea9f2c 2169 s->early_data_state = early_data_state;
09f28874
MC		 2170 return ret;
2171
49e7fe12 2172 default:
09f28874 2173 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2174 return 0;
2175 }
2176}
2177
4f43d0e7 2178int SSL_shutdown(SSL *s)
0f113f3e
MC		 2179{
2180 /*
2181 * Note that this function behaves differently from what one might
2182 * expect. Return values are 0 for no success (yet), 1 for success; but
2183 * calling it once is usually not enough, even if blocking I/O is used
2184 * (see ssl3_shutdown).
2185 */
2186
c4c32155 2187 if (s->handshake_func == NULL) {
0f113f3e
MC		 2188 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2189 return -1;
2190 }
2191
64f9f406 2192 if (!SSL_in_init(s)) {
e8aa8b6c 2193 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2194 struct ssl_async_args args;
ec447924 2195
64f9f406
MC		 2196 args.s = s;
2197 args.type = OTHERFUNC;
2198 args.f.func_other = s->method->ssl_shutdown;
ec447924 2199
64f9f406
MC		 2200 return ssl_start_async_job(s, &args, ssl_io_intern);
2201 } else {
2202 return s->method->ssl_shutdown(s);
2203 }
ec447924 2204 } else {
64f9f406
MC		 2205 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2206 return -1;
ec447924 2207 }
0f113f3e 2208}
d02b48c6 2209
4fbfe86a 2210int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2211{
f14afcaa 2212 /*
a9998e2f 2213 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2214 * negotiated, and that it is appropriate to call SSL_key_update() instead
2215 * of SSL_renegotiate().
2216 */
44c04a2e
MC		 2217 if (!SSL_IS_TLS13(s)) {
2218 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2219 return 0;
2220 }
2221
2222 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2223 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2224 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2225 return 0;
2226 }
2227
2228 if (!SSL_is_init_finished(s)) {
2229 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2230 return 0;
2231 }
2232
2233 ossl_statem_set_in_init(s, 1);
44c04a2e 2234 s->key_update = updatetype;
44c04a2e
MC		 2235 return 1;
2236}
2237
3499327b 2238int SSL_get_key_update_type(const SSL *s)
53d1d07d
MC		 2239{
2240 return s->key_update;
2241}
2242
4f43d0e7 2243int SSL_renegotiate(SSL *s)
0f113f3e 2244{
44c04a2e
MC		 2245 if (SSL_IS_TLS13(s)) {
2246 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2247 return 0;
44c04a2e 2248 }
cda6b998 2249
db0f35dd
TS		 2250 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2251 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2252 return 0;
2253 }
44959ee4 2254
db0f35dd 2255 s->renegotiate = 1;
0f113f3e 2256 s->new_session = 1;
44959ee4 2257
26a7d938 2258 return s->method->ssl_renegotiate(s);
0f113f3e 2259}
d02b48c6 2260
44959ee4 2261int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2262{
db0f35dd
TS		 2263 if (SSL_IS_TLS13(s)) {
2264 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2265 return 0;
db0f35dd 2266 }
cda6b998 2267
db0f35dd
TS		 2268 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2269 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2270 return 0;
2271 }
c519e89f 2272
db0f35dd 2273 s->renegotiate = 1;
0f113f3e 2274 s->new_session = 0;
c519e89f 2275
26a7d938 2276 return s->method->ssl_renegotiate(s);
0f113f3e 2277}
44959ee4 2278
3499327b 2279int SSL_renegotiate_pending(const SSL *s)
0f113f3e
MC		 2280{
2281 /*
2282 * becomes true when negotiation is requested; false again once a
2283 * handshake has finished
2284 */
2285 return (s->renegotiate != 0);
2286}
2287
3bfacb5f
BK		 2288int SSL_new_session_ticket(SSL *s)
2289{
35774d55
BK		 2290 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2291 || !SSL_IS_TLS13(s))
2292 return 0;
2293 s->ext.extra_tickets_expected++;
2294 return 1;
3bfacb5f
BK		 2295}
2296
0f113f3e
MC		 2297long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2298{
2299 long l;
2300
2301 switch (cmd) {
2302 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2303 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2304 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2305 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2306 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2307 return l;
0f113f3e
MC		 2308
2309 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2310 s->msg_callback_arg = parg;
2311 return 1;
2312
0f113f3e
MC		 2313 case SSL_CTRL_MODE:
2314 return (s->mode |= larg);
2315 case SSL_CTRL_CLEAR_MODE:
2316 return (s->mode &= ~larg);
2317 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2318 return (long)s->max_cert_list;
0f113f3e 2319 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2320 if (larg < 0)
2321 return 0;
2322 l = (long)s->max_cert_list;
2323 s->max_cert_list = (size_t)larg;
2324 return l;
0f113f3e
MC		 2325 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2326 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2327 return 0;
50ec7505
BP		 2328#ifndef OPENSSL_NO_KTLS
2329 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2330 return 0;
2331#endif /* OPENSSL_NO_KTLS */
0f113f3e 2332 s->max_send_fragment = larg;
d102d9df
MC		 2333 if (s->max_send_fragment < s->split_send_fragment)
2334 s->split_send_fragment = s->max_send_fragment;
2335 return 1;
2336 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2337 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2338 return 0;
2339 s->split_send_fragment = larg;
0f113f3e 2340 return 1;
d102d9df
MC		 2341 case SSL_CTRL_SET_MAX_PIPELINES:
2342 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2343 return 0;
2344 s->max_pipelines = larg;
94777c9c
MC		 2345 if (larg > 1)
2346 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2347 return 1;
0f113f3e 2348 case SSL_CTRL_GET_RI_SUPPORT:
555cbb32 2349 return s->s3.send_connection_binding;
0f113f3e
MC		 2350 case SSL_CTRL_CERT_FLAGS:
2351 return (s->cert->cert_flags |= larg);
2352 case SSL_CTRL_CLEAR_CERT_FLAGS:
2353 return (s->cert->cert_flags &= ~larg);
2354
2355 case SSL_CTRL_GET_RAW_CIPHERLIST:
2356 if (parg) {
555cbb32 2357 if (s->s3.tmp.ciphers_raw == NULL)
0f113f3e 2358 return 0;
555cbb32
TS		 2359 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2360 return (int)s->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2361 } else {
2362 return TLS_CIPHER_LEN;
2363 }
c5364614 2364 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2365 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2366 return -1;
dccd20d1 2367 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2368 return 1;
2369 else
2370 return 0;
7946ab33 2371 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2372 return ssl_check_allowed_versions(larg, s->max_proto_version)
2373 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2374 &s->min_proto_version);
3edabd3c
CH		 2375 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2376 return s->min_proto_version;
7946ab33 2377 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2378 return ssl_check_allowed_versions(s->min_proto_version, larg)
2379 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2380 &s->max_proto_version);
3edabd3c
CH		 2381 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2382 return s->max_proto_version;
0f113f3e 2383 default:
26a7d938 2384 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2385 }
2386}
2387
2388long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2389{
2390 switch (cmd) {
2391 case SSL_CTRL_SET_MSG_CALLBACK:
2392 s->msg_callback = (void (*)
2393 (int write_p, int version, int content_type,
2394 const void *buf, size_t len, SSL *ssl,
2395 void *arg))(fp);
2396 return 1;
2397
2398 default:
26a7d938 2399 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2400 }
2401}
d3442bc7 2402
3c1d6bbc 2403LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2404{
2405 return ctx->sessions;
2406}
2407
2408long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2409{
2410 long l;
2411 /* For some cases with ctx == NULL perform syntax checks */
2412 if (ctx == NULL) {
2413 switch (cmd) {
de4d764e 2414 case SSL_CTRL_SET_GROUPS_LIST:
260009d8 2415 return tls1_set_groups_list(ctx, NULL, NULL, parg);
0f113f3e
MC		 2416 case SSL_CTRL_SET_SIGALGS_LIST:
2417 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2418 return tls1_set_sigalgs_list(NULL, parg, 0);
2419 default:
2420 return 0;
2421 }
2422 }
2423
2424 switch (cmd) {
2425 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2426 return ctx->read_ahead;
0f113f3e
MC		 2427 case SSL_CTRL_SET_READ_AHEAD:
2428 l = ctx->read_ahead;
2429 ctx->read_ahead = larg;
26a7d938 2430 return l;
0f113f3e
MC		 2431
2432 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2433 ctx->msg_callback_arg = parg;
2434 return 1;
2435
2436 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2437 return (long)ctx->max_cert_list;
0f113f3e 2438 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2439 if (larg < 0)
2440 return 0;
2441 l = (long)ctx->max_cert_list;
2442 ctx->max_cert_list = (size_t)larg;
2443 return l;
0f113f3e
MC		 2444
2445 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2446 if (larg < 0)
2447 return 0;
2448 l = (long)ctx->session_cache_size;
2449 ctx->session_cache_size = (size_t)larg;
2450 return l;
0f113f3e 2451 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2452 return (long)ctx->session_cache_size;
0f113f3e
MC		 2453 case SSL_CTRL_SET_SESS_CACHE_MODE:
2454 l = ctx->session_cache_mode;
2455 ctx->session_cache_mode = larg;
26a7d938 2456 return l;
0f113f3e 2457 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2458 return ctx->session_cache_mode;
0f113f3e
MC		 2459
2460 case SSL_CTRL_SESS_NUMBER:
26a7d938 2461 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2462 case SSL_CTRL_SESS_CONNECT:
9ef9088c 2463 return tsan_load(&ctx->stats.sess_connect);
0f113f3e 2464 case SSL_CTRL_SESS_CONNECT_GOOD:
9ef9088c 2465 return tsan_load(&ctx->stats.sess_connect_good);
0f113f3e 2466 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
9ef9088c 2467 return tsan_load(&ctx->stats.sess_connect_renegotiate);
0f113f3e 2468 case SSL_CTRL_SESS_ACCEPT:
9ef9088c 2469 return tsan_load(&ctx->stats.sess_accept);
0f113f3e 2470 case SSL_CTRL_SESS_ACCEPT_GOOD:
9ef9088c 2471 return tsan_load(&ctx->stats.sess_accept_good);
0f113f3e 2472 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
9ef9088c 2473 return tsan_load(&ctx->stats.sess_accept_renegotiate);
0f113f3e 2474 case SSL_CTRL_SESS_HIT:
9ef9088c 2475 return tsan_load(&ctx->stats.sess_hit);
0f113f3e 2476 case SSL_CTRL_SESS_CB_HIT:
9ef9088c 2477 return tsan_load(&ctx->stats.sess_cb_hit);
0f113f3e 2478 case SSL_CTRL_SESS_MISSES:
9ef9088c 2479 return tsan_load(&ctx->stats.sess_miss);
0f113f3e 2480 case SSL_CTRL_SESS_TIMEOUTS:
9ef9088c 2481 return tsan_load(&ctx->stats.sess_timeout);
0f113f3e 2482 case SSL_CTRL_SESS_CACHE_FULL:
9ef9088c 2483 return tsan_load(&ctx->stats.sess_cache_full);
0f113f3e
MC		 2484 case SSL_CTRL_MODE:
2485 return (ctx->mode |= larg);
2486 case SSL_CTRL_CLEAR_MODE:
2487 return (ctx->mode &= ~larg);
2488 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2489 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2490 return 0;
2491 ctx->max_send_fragment = larg;
d102d9df 2492 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2493 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2494 return 1;
d102d9df 2495 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2496 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2497 return 0;
2498 ctx->split_send_fragment = larg;
2499 return 1;
2500 case SSL_CTRL_SET_MAX_PIPELINES:
2501 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2502 return 0;
2503 ctx->max_pipelines = larg;
07077415 2504 return 1;
0f113f3e
MC		 2505 case SSL_CTRL_CERT_FLAGS:
2506 return (ctx->cert->cert_flags |= larg);
2507 case SSL_CTRL_CLEAR_CERT_FLAGS:
2508 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2509 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2510 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2511 && ssl_set_version_bound(ctx->method->version, (int)larg,
2512 &ctx->min_proto_version);
3edabd3c
CH		 2513 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2514 return ctx->min_proto_version;
7946ab33 2515 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2516 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2517 && ssl_set_version_bound(ctx->method->version, (int)larg,
2518 &ctx->max_proto_version);
3edabd3c
CH		 2519 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2520 return ctx->max_proto_version;
0f113f3e 2521 default:
26a7d938 2522 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2523 }
2524}
2525
2526long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2527{
2528 switch (cmd) {
2529 case SSL_CTRL_SET_MSG_CALLBACK:
2530 ctx->msg_callback = (void (*)
2531 (int write_p, int version, int content_type,
2532 const void *buf, size_t len, SSL *ssl,
2533 void *arg))(fp);
2534 return 1;
2535
2536 default:
26a7d938 2537 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2538 }
2539}
d3442bc7 2540
ccd86b68 2541int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2542{
90d9e49a
DSH		 2543 if (a->id > b->id)
2544 return 1;
2545 if (a->id < b->id)
2546 return -1;
2547 return 0;
0f113f3e
MC		 2548}
2549
2550int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2551 const SSL_CIPHER *const *bp)
2552{
90d9e49a
DSH		 2553 if ((*ap)->id > (*bp)->id)
2554 return 1;
2555 if ((*ap)->id < (*bp)->id)
2556 return -1;
2557 return 0;
0f113f3e 2558}
d02b48c6 2559
4f43d0e7 2560/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2561 * preference */
0821bcd4 2562STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2563{
2564 if (s != NULL) {
2565 if (s->cipher_list != NULL) {
26a7d938 2566 return s->cipher_list;
0f113f3e 2567 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2568 return s->ctx->cipher_list;
0f113f3e
MC		 2569 }
2570 }
26a7d938 2571 return NULL;
0f113f3e
MC		 2572}
2573
831eef2c
NM		 2574STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2575{
eee2a6a7 2576 if ((s == NULL) || !s->server)
831eef2c 2577 return NULL;
eee2a6a7 2578 return s->peer_ciphers;
831eef2c
NM		 2579}
2580
8b8e5bed 2581STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2582{
2583 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2584 int i;
1d0c08b4 2585
0f113f3e
MC		 2586 ciphers = SSL_get_ciphers(s);
2587 if (!ciphers)
2588 return NULL;
1d0c08b4
MC		 2589 if (!ssl_set_client_disabled(s))
2590 return NULL;
0f113f3e
MC		 2591 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2592 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2593 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2594 if (!sk)
2595 sk = sk_SSL_CIPHER_new_null();
2596 if (!sk)
2597 return NULL;
2598 if (!sk_SSL_CIPHER_push(sk, c)) {
2599 sk_SSL_CIPHER_free(sk);
2600 return NULL;
2601 }
2602 }
2603 }
2604 return sk;
2605}
8b8e5bed 2606
4f43d0e7 2607/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2608 * algorithm id */
f73e07cf 2609STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2610{
2611 if (s != NULL) {
2612 if (s->cipher_list_by_id != NULL) {
26a7d938 2613 return s->cipher_list_by_id;
0f113f3e 2614 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2615 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2616 }
2617 }
26a7d938 2618 return NULL;
0f113f3e 2619}
d02b48c6 2620
4f43d0e7 2621/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2622const char *SSL_get_cipher_list(const SSL *s, int n)
2623{
4a640fb6 2624 const SSL_CIPHER *c;
0f113f3e
MC		 2625 STACK_OF(SSL_CIPHER) *sk;
2626
2627 if (s == NULL)
26a7d938 2628 return NULL;
0f113f3e
MC		 2629 sk = SSL_get_ciphers(s);
2630 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2631 return NULL;
0f113f3e
MC		 2632 c = sk_SSL_CIPHER_value(sk, n);
2633 if (c == NULL)
26a7d938
K		 2634 return NULL;
2635 return c->name;
0f113f3e 2636}
d02b48c6 2637
9d5ac953
KY		 2638/** return a STACK of the ciphers available for the SSL_CTX and in order of
2639 * preference */
2640STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2641{
2642 if (ctx != NULL)
2643 return ctx->cipher_list;
2644 return NULL;
2645}
2646
3c83c5ba
SR		 2647/*
2648 * Distinguish between ciphers controlled by set_ciphersuite() and
2649 * set_cipher_list() when counting.
2650 */
2651static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2652{
2653 int i, num = 0;
2654 const SSL_CIPHER *c;
2655
2656 if (sk == NULL)
2657 return 0;
2658 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2659 c = sk_SSL_CIPHER_value(sk, i);
2660 if (c->min_tls >= TLS1_3_VERSION)
2661 continue;
2662 num++;
2663 }
2664 return num;
2665}
2666
25f923dd 2667/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2668int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2669{
2670 STACK_OF(SSL_CIPHER) *sk;
2671
f865b081
MC		 2672 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2673 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2674 ctx->cert);
0f113f3e
MC		 2675 /*
2676 * ssl_create_cipher_list may return an empty stack if it was unable to
2677 * find a cipher matching the given rule string (for example if the rule
2678 * string specifies a cipher which has been disabled). This is not an
2679 * error as far as ssl_create_cipher_list is concerned, and hence
2680 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2681 */
2682 if (sk == NULL)
2683 return 0;
3c83c5ba 2684 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2685 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2686 return 0;
2687 }
2688 return 1;
2689}
d02b48c6 2690
4f43d0e7 2691/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2692int SSL_set_cipher_list(SSL *s, const char *str)
2693{
2694 STACK_OF(SSL_CIPHER) *sk;
2695
f865b081
MC		 2696 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2697 &s->cipher_list, &s->cipher_list_by_id, str,
2698 s->cert);
0f113f3e
MC		 2699 /* see comment in SSL_CTX_set_cipher_list */
2700 if (sk == NULL)
2701 return 0;
3c83c5ba 2702 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2703 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2704 return 0;
2705 }
2706 return 1;
2707}
d02b48c6 2708
a216df59 2709char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 2710{
2711 char *p;
a216df59 2712 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 2713 const SSL_CIPHER *c;
0f113f3e
MC		 2714 int i;
2715
a216df59 2716 if (!s->server
eee2a6a7 2717 || s->peer_ciphers == NULL
a216df59 2718 || size < 2)
26a7d938 2719 return NULL;
0f113f3e
MC		 2720
2721 p = buf;
eee2a6a7 2722 clntsk = s->peer_ciphers;
a216df59
MC		 2723 srvrsk = SSL_get_ciphers(s);
2724 if (clntsk == NULL || srvrsk == NULL)
2725 return NULL;
0f113f3e 2726
a216df59 2727 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 2728 return NULL;
2729
a216df59 2730 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 2731 int n;
2732
a216df59
MC		 2733 c = sk_SSL_CIPHER_value(clntsk, i);
2734 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2735 continue;
2736
0f113f3e 2737 n = strlen(c->name);
a216df59 2738 if (n + 1 > size) {
0f113f3e
MC		 2739 if (p != buf)
2740 --p;
2741 *p = '\0';
2742 return buf;
2743 }
4cacc9d5 2744 strcpy(p, c->name);
0f113f3e
MC		 2745 p += n;
2746 *(p++) = ':';
a216df59 2747 size -= n + 1;
0f113f3e
MC		 2748 }
2749 p[-1] = '\0';
26a7d938 2750 return buf;
0f113f3e
MC		 2751}
2752
7955c1f1
MC		 2753/**
2754 * Return the requested servername (SNI) value. Note that the behaviour varies
2755 * depending on:
2756 * - whether this is called by the client or the server,
2757 * - if we are before or during/after the handshake,
2758 * - if a resumption or normal handshake is being attempted/has occurred
2759 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2760 *
2761 * Note that only the host_name type is defined (RFC 3546).
ed3883d2 2762 */
f1fd4544 2763const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e 2764{
7955c1f1
MC		 2765 /*
2766 * If we don't know if we are the client or the server yet then we assume
2767 * client.
2768 */
2769 int server = s->handshake_func == NULL ? 0 : s->server;
0f113f3e
MC		 2770 if (type != TLSEXT_NAMETYPE_host_name)
2771 return NULL;
a13c20f6 2772
7955c1f1
MC		 2773 if (server) {
2774 /**
2775 * Server side
2776 * In TLSv1.3 on the server SNI is not associated with the session
2777 * but in TLSv1.2 or below it is.
2778 *
2779 * Before the handshake:
2780 * - return NULL
2781 *
2782 * During/after the handshake (TLSv1.2 or below resumption occurred):
2783 * - If a servername was accepted by the server in the original
2784 * handshake then it will return that servername, or NULL otherwise.
2785 *
2786 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2787 * - The function will return the servername requested by the client in
2788 * this handshake or NULL if none was requested.
2789 */
2790 if (s->hit && !SSL_IS_TLS13(s))
2791 return s->session->ext.hostname;
2792 } else {
2793 /**
2794 * Client side
2795 *
2796 * Before the handshake:
2797 * - If a servername has been set via a call to
2798 * SSL_set_tlsext_host_name() then it will return that servername
2799 * - If one has not been set, but a TLSv1.2 resumption is being
2800 * attempted and the session from the original handshake had a
2801 * servername accepted by the server then it will return that
2802 * servername
2803 * - Otherwise it returns NULL
2804 *
2805 * During/after the handshake (TLSv1.2 or below resumption occurred):
2806 * - If the session from the orignal handshake had a servername accepted
2807 * by the server then it will return that servername.
2808 * - Otherwise it returns the servername set via
2809 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2810 *
2811 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2812 * - It will return the servername set via SSL_set_tlsext_host_name()
2813 * (or NULL if it was not called).
2814 */
2815 if (SSL_in_before(s)) {
2816 if (s->ext.hostname == NULL
2817 && s->session != NULL
2818 && s->session->ssl_version != TLS1_3_VERSION)
2819 return s->session->ext.hostname;
2820 } else {
2821 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2822 return s->session->ext.hostname;
2823 }
2824 }
2825
328a0547 2826 return s->ext.hostname;
0f113f3e 2827}
ed3883d2 2828
f1fd4544 2829int SSL_get_servername_type(const SSL *s)
0f113f3e 2830{
7955c1f1 2831 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
0f113f3e
MC		 2832 return TLSEXT_NAMETYPE_host_name;
2833 return -1;
2834}
ee2ffc27 2835
0f113f3e
MC		 2836/*
2837 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2838 * expected that this function is called from the callback set by
0f113f3e
MC		 2839 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2840 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2841 * not included in the length. A byte string of length 0 is invalid. No byte
2842 * string may be truncated. The current, but experimental algorithm for
2843 * selecting the protocol is: 1) If the server doesn't support NPN then this
2844 * is indicated to the callback. In this case, the client application has to
2845 * abort the connection or have a default application level protocol. 2) If
2846 * the server supports NPN, but advertises an empty list then the client
f430ba31 2847 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2848 * fallback case was enacted. 3) Otherwise, the client finds the first
2849 * protocol in the server's list that it supports and selects this protocol.
2850 * This is because it's assumed that the server has better information about
2851 * which protocol a client should use. 4) If the client doesn't support any
2852 * of the server's advertised protocols, then this is treated the same as
2853 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2854 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2855 */
0f113f3e
MC		 2856int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2857 const unsigned char *server,
2858 unsigned int server_len,
a230b26e 2859 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2860{
2861 unsigned int i, j;
2862 const unsigned char *result;
2863 int status = OPENSSL_NPN_UNSUPPORTED;
2864
2865 /*
2866 * For each protocol in server preference order, see if we support it.
2867 */
2868 for (i = 0; i < server_len;) {
2869 for (j = 0; j < client_len;) {
2870 if (server[i] == client[j] &&
2871 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2872 /* We found a match */
2873 result = &server[i];
2874 status = OPENSSL_NPN_NEGOTIATED;
2875 goto found;
2876 }
2877 j += client[j];
2878 j++;
2879 }
2880 i += server[i];
2881 i++;
2882 }
2883
2884 /* There's no overlap between our protocols and the server's list. */
2885 result = client;
2886 status = OPENSSL_NPN_NO_OVERLAP;
2887
2888 found:
2889 *out = (unsigned char *)result + 1;
2890 *outlen = result[0];
2891 return status;
2892}
ee2ffc27 2893
e481f9b9 2894#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2895/*
2896 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2897 * client's requested protocol for this connection and returns 0. If the
2898 * client didn't request any protocol, then *data is set to NULL. Note that
2899 * the client can request any protocol it chooses. The value returned from
2900 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2901 * provided by the callback.
2902 */
0f113f3e
MC		 2903void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2904 unsigned *len)
2905{
aff8c126 2906 *data = s->ext.npn;
12a765a5 2907 if (*data == NULL) {
0f113f3e
MC		 2908 *len = 0;
2909 } else {
aff8c126 2910 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2911 }
2912}
2913
2914/*
aff8c126 2915 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2916 * a TLS server needs a list of supported protocols for Next Protocol
2917 * Negotiation. The returned list must be in wire format. The list is
2918 * returned by setting |out| to point to it and |outlen| to its length. This
2919 * memory will not be modified, but one should assume that the SSL* keeps a
2920 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2921 * wishes to advertise. Otherwise, no such extension will be included in the
2922 * ServerHello.
2923 */
aff8c126 2924void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2925 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2926 void *arg)
0f113f3e 2927{
aff8c126
RS		 2928 ctx->ext.npn_advertised_cb = cb;
2929 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2930}
2931
2932/*
2933 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2934 * client needs to select a protocol from the server's provided list. |out|
2935 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2936 * The length of the protocol name must be written into |outlen|. The
2937 * server's advertised protocols are provided in |in| and |inlen|. The
2938 * callback can assume that |in| is syntactically valid. The client must
2939 * select a protocol. It is fatal to the connection if this callback returns
2940 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2941 */
aff8c126 2942void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2943 SSL_CTX_npn_select_cb_func cb,
aff8c126 2944 void *arg)
0f113f3e 2945{
aff8c126
RS		 2946 ctx->ext.npn_select_cb = cb;
2947 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2948}
e481f9b9 2949#endif
a398f821 2950
0f113f3e
MC		 2951/*
2952 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2953 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2954 * length-prefixed strings). Returns 0 on success.
2955 */
2956int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2957 unsigned int protos_len)
0f113f3e 2958{
aff8c126
RS		 2959 OPENSSL_free(ctx->ext.alpn);
2960 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2961 if (ctx->ext.alpn == NULL) {
72e9be3d 2962 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2963 return 1;
72e9be3d 2964 }
aff8c126 2965 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2966
2967 return 0;
2968}
2969
2970/*
2971 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2972 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2973 * length-prefixed strings). Returns 0 on success.
2974 */
2975int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2976 unsigned int protos_len)
0f113f3e 2977{
aff8c126
RS		 2978 OPENSSL_free(ssl->ext.alpn);
2979 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2980 if (ssl->ext.alpn == NULL) {
72e9be3d 2981 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2982 return 1;
72e9be3d 2983 }
aff8c126 2984 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2985
2986 return 0;
2987}
2988
2989/*
2990 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2991 * called during ClientHello processing in order to select an ALPN protocol
2992 * from the client's list of offered protocols.
2993 */
2994void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2995 SSL_CTX_alpn_select_cb_func cb,
2996 void *arg)
0f113f3e 2997{
aff8c126
RS		 2998 ctx->ext.alpn_select_cb = cb;
2999 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 3000}
3001
3002/*
69687aa8
F		 3003 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3004 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 3005 * (not including the leading length-prefix byte). If the server didn't
3006 * respond with a negotiated protocol then |*len| will be zero.
3007 */
6f017a8f 3008void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 3009 unsigned int *len)
0f113f3e 3010{
555cbb32 3011 *data = ssl->s3.alpn_selected;
0f113f3e
MC		 3012 if (*data == NULL)
3013 *len = 0;
3014 else
555cbb32 3015 *len = (unsigned int)ssl->s3.alpn_selected_len;
0f113f3e
MC		 3016}
3017
74b4b494 3018int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 3019 const char *label, size_t llen,
23cec1f4 3020 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 3021 int use_context)
3022{
c8a18468 3023 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 3024 return -1;
e0af0405 3025
0f113f3e 3026 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 3027 llen, context,
3028 contextlen, use_context);
0f113f3e 3029}
e0af0405 3030
b38ede80
TT		 3031int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3032 const char *label, size_t llen,
3033 const unsigned char *context,
3034 size_t contextlen)
3035{
3036 if (s->version != TLS1_3_VERSION)
3037 return 0;
3038
3039 return tls13_export_keying_material_early(s, out, olen, label, llen,
3040 context, contextlen);
3041}
3042
3c1d6bbc 3043static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 3044{
bd5d27c1 3045 const unsigned char *session_id = a->session_id;
0f113f3e 3046 unsigned long l;
bd5d27c1
DB		 3047 unsigned char tmp_storage[4];
3048
3049 if (a->session_id_length < sizeof(tmp_storage)) {
3050 memset(tmp_storage, 0, sizeof(tmp_storage));
3051 memcpy(tmp_storage, a->session_id, a->session_id_length);
3052 session_id = tmp_storage;
3053 }
0f113f3e
MC		 3054
3055 l = (unsigned long)
bd5d27c1
DB		 3056 ((unsigned long)session_id[0]) |
3057 ((unsigned long)session_id[1] << 8L) |
3058 ((unsigned long)session_id[2] << 16L) |
3059 ((unsigned long)session_id[3] << 24L);
26a7d938 3060 return l;
0f113f3e
MC		 3061}
3062
3063/*
3064 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3065 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3066 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3067 * being able to construct an SSL_SESSION that will collide with any existing
3068 * session with a matching session ID.
3069 */
3070static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3071{
3072 if (a->ssl_version != b->ssl_version)
208fb891 3073 return 1;
0f113f3e 3074 if (a->session_id_length != b->session_id_length)
208fb891 3075 return 1;
26a7d938 3076 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3077}
3078
3079/*
3080 * These wrapper functions should remain rather than redeclaring
d0fa136c 3081 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3082 * variable. The reason is that the functions aren't static, they're exposed
3083 * via ssl.h.
3084 */
97b17195 3085
ba18627e
MC		 3086SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3087 const SSL_METHOD *meth)
0f113f3e
MC		 3088{
3089 SSL_CTX *ret = NULL;
3090
3091 if (meth == NULL) {
ba18627e 3092 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3093 return NULL;
0f113f3e
MC		 3094 }
3095
0fc32b07
MC		 3096 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3097 return NULL;
7fa792d1 3098
0f113f3e 3099 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
ba18627e 3100 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
0f113f3e
MC		 3101 goto err;
3102 }
b51bce94 3103 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3104 if (ret == NULL)
3105 goto err;
3106
ba18627e
MC		 3107 ret->libctx = libctx;
3108 if (propq != NULL) {
3109 ret->propq = OPENSSL_strdup(propq);
3110 if (ret->propq == NULL)
3111 goto err;
3112 }
3113
0f113f3e 3114 ret->method = meth;
7946ab33
KR		 3115 ret->min_proto_version = 0;
3116 ret->max_proto_version = 0;
693cf80c 3117 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3118 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3119 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3120 /* We take the system default. */
0f113f3e 3121 ret->session_timeout = meth->get_timeout();
0f113f3e 3122 ret->references = 1;
16203f7b
AG		 3123 ret->lock = CRYPTO_THREAD_lock_new();
3124 if (ret->lock == NULL) {
ba18627e 3125 SSLerr(0, ERR_R_MALLOC_FAILURE);
16203f7b
AG		 3126 OPENSSL_free(ret);
3127 return NULL;
3128 }
0f113f3e 3129 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3130 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3131 if ((ret->cert = ssl_cert_new()) == NULL)
3132 goto err;
3133
62d0577e 3134 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3135 if (ret->sessions == NULL)
3136 goto err;
3137 ret->cert_store = X509_STORE_new();
3138 if (ret->cert_store == NULL)
3139 goto err;
ed29e82a 3140#ifndef OPENSSL_NO_CT
1a37ee94 3141 ret->ctlog_store = CTLOG_STORE_new_with_libctx(libctx, propq);
ed29e82a
RP		 3142 if (ret->ctlog_store == NULL)
3143 goto err;
3144#endif
f865b081 3145
c8f6c28a
MC		 3146 /* initialize cipher/digest methods table */
3147 if (!ssl_load_ciphers(ret))
075b1f2f 3148 goto err2;
263ff2c9
MC		 3149 /* initialise sig algs */
3150 if (!ssl_setup_sig_algs(ret))
3151 goto err2;
3152
c8f6c28a 3153
9d2d857f
MC		 3154 if (!ssl_load_groups(ret))
3155 goto err2;
3156
5d120511 3157 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
f865b081
MC		 3158 goto err;
3159
61986d32 3160 if (!ssl_create_cipher_list(ret->method,
f865b081 3161 ret->tls13_ciphersuites,
a230b26e 3162 &ret->cipher_list, &ret->cipher_list_by_id,
5d120511 3163 OSSL_default_cipher_list(), ret->cert)
a230b26e 3164 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
ba18627e 3165 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
0f113f3e
MC		 3166 goto err2;
3167 }
3168
3169 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3170 if (ret->param == NULL)
0f113f3e
MC		 3171 goto err;
3172
c8f6c28a
MC		 3173 /*
3174 * If these aren't available from the provider we'll get NULL returns.
3175 * That's fine but will cause errors later if SSLv3 is negotiated
3176 */
3177 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3178 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
0f113f3e 3179
fa7c2637 3180 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3181 goto err;
3182
98732979
MC		 3183 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3184 goto err;
3185
25a807bc
F		 3186 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3187 goto err;
0f113f3e 3188
4bfb96f2
TS		 3189 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3190 goto err;
3191
0f113f3e
MC		 3192 /* No compression for DTLS */
3193 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3194 ret->comp_methods = SSL_COMP_get_compression_methods();
3195
3196 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3197 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3198
4e2e1ec9 3199 /* Setup RFC5077 ticket keys */
8f21260b
MC		 3200 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3201 sizeof(ret->ext.tick_key_name)) <= 0)
3202 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3203 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3204 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3205 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
0f113f3e 3206 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3207
8f21260b
MC		 3208 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3209 sizeof(ret->ext.cookie_hmac_key)) <= 0)
43054d3d
MC		 3210 goto err;
3211
edc032b5 3212#ifndef OPENSSL_NO_SRP
61986d32 3213 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 3214 goto err;
edc032b5 3215#endif
4db9677b 3216#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3217# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3218# define eng_strx(x) #x
3219# define eng_str(x) eng_strx(x)
3220 /* Use specific client engine automatically... ignore errors */
3221 {
3222 ENGINE *eng;
3223 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3224 if (!eng) {
3225 ERR_clear_error();
3226 ENGINE_load_builtin_engines();
3227 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3228 }
3229 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3230 ERR_clear_error();
3231 }
3232# endif
3233#endif
3234 /*
3235 * Default is to connect to non-RI servers. When RI is more widely
3236 * deployed might change this.
3237 */
3238 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3239 /*
3240 * Disable compression by default to prevent CRIME. Applications can
3241 * re-enable compression by configuring
3242 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3243 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3244 * middlebox compatibility by default. This may be disabled by default in
3245 * a later OpenSSL version.
dc5744cb 3246 */
a5816a5a 3247 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3248
aff8c126 3249 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3250
bfa9a9af 3251 /*
c39e4048
BK		 3252 * We cannot usefully set a default max_early_data here (which gets
3253 * propagated in SSL_new(), for the following reason: setting the
3254 * SSL field causes tls_construct_stoc_early_data() to tell the
3255 * client that early data will be accepted when constructing a TLS 1.3
3256 * session ticket, and the client will accordingly send us early data
3257 * when using that ticket (if the client has early data to send).
3258 * However, in order for the early data to actually be consumed by
3259 * the application, the application must also have calls to
3260 * SSL_read_early_data(); otherwise we'll just skip past the early data
3261 * and ignore it. So, since the application must add calls to
3262 * SSL_read_early_data(), we also require them to add
3263 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3264 * eliminating the bandwidth-wasting early data in the case described
3265 * above.
bfa9a9af 3266 */
c39e4048 3267 ret->max_early_data = 0;
bfa9a9af 3268
4e8548e8
MC		 3269 /*
3270 * Default recv_max_early_data is a fully loaded single record. Could be
3271 * split across multiple records in practice. We set this differently to
3272 * max_early_data so that, in the default case, we do not advertise any
3273 * support for early_data, but if a client were to send us some (e.g.
3274 * because of an old, stale ticket) then we will tolerate it and skip over
3275 * it.
3276 */
3277 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3278
36ff232c
MC		 3279 /* By default we send two session tickets automatically in TLSv1.3 */
3280 ret->num_tickets = 2;
9d0a8bb7 3281
8a5ed9dc
TM		 3282 ssl_ctx_system_config(ret);
3283
16203f7b 3284 return ret;
0f113f3e 3285 err:
ba18627e 3286 SSLerr(0, ERR_R_MALLOC_FAILURE);
0f113f3e 3287 err2:
e0e920b1 3288 SSL_CTX_free(ret);
16203f7b 3289 return NULL;
0f113f3e 3290}
d02b48c6 3291
ba18627e
MC		 3292SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3293{
3294 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3295}
3296
c5ebfcab 3297int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3298{
16203f7b 3299 int i;
c5ebfcab 3300
2f545ae4 3301 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3302 return 0;
3303
3304 REF_PRINT_COUNT("SSL_CTX", ctx);
3305 REF_ASSERT_ISNT(i < 2);
3306 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3307}
3308
4f43d0e7 3309void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3310{
3311 int i;
9d2d857f 3312 size_t j;
d02b48c6 3313
0f113f3e
MC		 3314 if (a == NULL)
3315 return;
d02b48c6 3316
2f545ae4 3317 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3318 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3319 if (i > 0)
3320 return;
f3f1cf84 3321 REF_ASSERT_ISNT(i < 0);
0f113f3e 3322
222561fe 3323 X509_VERIFY_PARAM_free(a->param);
919ba009 3324 dane_ctx_final(&a->dane);
0f113f3e
MC		 3325
3326 /*
3327 * Free internal session cache. However: the remove_cb() may reference
3328 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3329 * after the sessions were flushed.
3330 * As the ex_data handling routines might also touch the session cache,
3331 * the most secure solution seems to be: empty (flush) the cache, then
3332 * free ex_data, then finally free the cache.
3333 * (See ticket [openssl.org #212].)
3334 */
3335 if (a->sessions != NULL)
3336 SSL_CTX_flush_sessions(a, 0);
3337
3338 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3339 lh_SSL_SESSION_free(a->sessions);
222561fe 3340 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3341#ifndef OPENSSL_NO_CT
3342 CTLOG_STORE_free(a->ctlog_store);
3343#endif
25aaa98a
RS		 3344 sk_SSL_CIPHER_free(a->cipher_list);
3345 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3346 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3347 ssl_cert_free(a->cert);
fa7c2637 3348 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3349 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
222561fe 3350 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3351 a->comp_methods = NULL;
e783bae2 3352#ifndef OPENSSL_NO_SRTP
25aaa98a 3353 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3354#endif
edc032b5 3355#ifndef OPENSSL_NO_SRP
0f113f3e 3356 SSL_CTX_SRP_CTX_free(a);
edc032b5 3357#endif
bdfe932d 3358#ifndef OPENSSL_NO_ENGINE
7c96dbcd 3359 ENGINE_finish(a->client_cert_engine);
ddac1974 3360#endif
8671b898 3361
e481f9b9 3362#ifndef OPENSSL_NO_EC
aff8c126 3363 OPENSSL_free(a->ext.ecpointformats);
8671b898 3364#endif
187753e0 3365 OPENSSL_free(a->ext.supportedgroups);
aff8c126 3366 OPENSSL_free(a->ext.alpn);
4bfb96f2 3367 OPENSSL_secure_free(a->ext.secure);
8671b898 3368
c8f6c28a
MC		 3369 ssl_evp_md_free(a->md5);
3370 ssl_evp_md_free(a->sha1);
3371
9d2d857f
MC		 3372 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3373 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3374 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3375 ssl_evp_md_free(a->ssl_digest_methods[j]);
3376 for (j = 0; j < a->group_list_len; j++) {
3377 OPENSSL_free(a->group_list[j].tlsname);
3378 OPENSSL_free(a->group_list[j].realname);
3379 OPENSSL_free(a->group_list[j].algorithm);
3380 }
3381 OPENSSL_free(a->group_list);
c8f6c28a 3382
263ff2c9
MC		 3383 OPENSSL_free(a->sigalg_lookup_cache);
3384
16203f7b
AG		 3385 CRYPTO_THREAD_lock_free(a->lock);
3386
ba18627e
MC		 3387 OPENSSL_free(a->propq);
3388
0f113f3e
MC		 3389 OPENSSL_free(a);
3390}
d02b48c6 3391
3ae76679 3392void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3393{
3394 ctx->default_passwd_callback = cb;
3395}
3396
3397void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3398{
3399 ctx->default_passwd_callback_userdata = u;
3400}
3401
0c452abc
CH		 3402pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3403{
3404 return ctx->default_passwd_callback;
3405}
3406
3407void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3408{
3409 return ctx->default_passwd_callback_userdata;
3410}
3411
a974e64a
MC		 3412void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3413{
3414 s->default_passwd_callback = cb;
3415}
3416
3417void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3418{
3419 s->default_passwd_callback_userdata = u;
3420}
3421
0c452abc
CH		 3422pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3423{
3424 return s->default_passwd_callback;
3425}
3426
3427void *SSL_get_default_passwd_cb_userdata(SSL *s)
3428{
3429 return s->default_passwd_callback_userdata;
3430}
3431
0f113f3e
MC		 3432void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3433 int (*cb) (X509_STORE_CTX *, void *),
3434 void *arg)
3435{
3436 ctx->app_verify_callback = cb;
3437 ctx->app_verify_arg = arg;
3438}
3439
3440void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3441 int (*cb) (int, X509_STORE_CTX *))
3442{
3443 ctx->verify_mode = mode;
3444 ctx->default_verify_callback = cb;
3445}
3446
3447void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3448{
3449 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3450}
3451
a230b26e 3452void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3453{
3454 ssl_cert_set_cert_cb(c->cert, cb, arg);
3455}
3456
3457void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3458{
3459 ssl_cert_set_cert_cb(s->cert, cb, arg);
3460}
18d71588 3461
2cf28d61 3462void ssl_set_masks(SSL *s)
0f113f3e 3463{
6383d316 3464 CERT *c = s->cert;
555cbb32 3465 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 3466 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3467 unsigned long mask_k, mask_a;
10bf4fc2 3468#ifndef OPENSSL_NO_EC
361a1191 3469 int have_ecc_cert, ecdsa_ok;
14536c8c 3470#endif
0f113f3e
MC		 3471 if (c == NULL)
3472 return;
d02b48c6 3473
bc36ee62 3474#ifndef OPENSSL_NO_DH
0f113f3e 3475 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3476#else
361a1191 3477 dh_tmp = 0;
d02b48c6
RE		 3478#endif
3479
d0ff28f8 3480 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3481 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3482 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3483#ifndef OPENSSL_NO_EC
6383d316 3484 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3485#endif
0f113f3e
MC		 3486 mask_k = 0;
3487 mask_a = 0;
0e1dba93 3488
77359d22
RL		 3489 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3490 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 3491
2a9b9654 3492#ifndef OPENSSL_NO_GOST
4020c0b3 3493 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
5a5530a2 3494 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3495 mask_a |= SSL_aGOST12;
3496 }
4020c0b3 3497 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
5a5530a2 3498 mask_k |= SSL_kGOST | SSL_kGOST18;
e44380a9
DB		 3499 mask_a |= SSL_aGOST12;
3500 }
4020c0b3 3501 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3502 mask_k |= SSL_kGOST;
3503 mask_a |= SSL_aGOST01;
3504 }
2a9b9654 3505#endif
0f113f3e 3506
361a1191 3507 if (rsa_enc)
0f113f3e 3508 mask_k |= SSL_kRSA;
d02b48c6 3509
0f113f3e
MC		 3510 if (dh_tmp)
3511 mask_k |= SSL_kDHE;
d02b48c6 3512
6aaa29fb
DSH		 3513 /*
3514 * If we only have an RSA-PSS certificate allow RSA authentication
3515 * if TLS 1.2 and peer supports it.
3516 */
3517
3518 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3519 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3520 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3521 mask_a |= SSL_aRSA;
d02b48c6 3522
0f113f3e
MC		 3523 if (dsa_sign) {
3524 mask_a |= SSL_aDSS;
0f113f3e 3525 }
d02b48c6 3526
0f113f3e 3527 mask_a |= SSL_aNULL;
d02b48c6 3528
0f113f3e
MC		 3529 /*
3530 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3531 * depending on the key usage extension.
3532 */
14536c8c 3533#ifndef OPENSSL_NO_EC
0f113f3e 3534 if (have_ecc_cert) {
a8d8e06b 3535 uint32_t ex_kusage;
4020c0b3 3536 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3537 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3538 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3539 ecdsa_ok = 0;
c7c46256 3540 if (ecdsa_ok)
0f113f3e 3541 mask_a |= SSL_aECDSA;
0f113f3e 3542 }
b2021556
DSH		 3543 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3544 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3545 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3546 && TLS1_get_version(s) == TLS1_2_VERSION)
3547 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3548
3549 /* Allow Ed448 for TLS 1.2 if peer supports it */
3550 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3551 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3552 && TLS1_get_version(s) == TLS1_2_VERSION)
3553 mask_a |= SSL_aECDSA;
14536c8c 3554#endif
ea262260 3555
10bf4fc2 3556#ifndef OPENSSL_NO_EC
fe6ef247 3557 mask_k |= SSL_kECDHE;
ea262260 3558#endif
ddac1974
NL		 3559
3560#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3561 mask_k |= SSL_kPSK;
3562 mask_a |= SSL_aPSK;
526f94ad
DSH		 3563 if (mask_k & SSL_kRSA)
3564 mask_k |= SSL_kRSAPSK;
3565 if (mask_k & SSL_kDHE)
3566 mask_k |= SSL_kDHEPSK;
3567 if (mask_k & SSL_kECDHE)
3568 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3569#endif
3570
555cbb32
TS		 3571 s->s3.tmp.mask_k = mask_k;
3572 s->s3.tmp.mask_a = mask_a;
0f113f3e 3573}
d02b48c6 3574
ef236ec3
DSH		 3575#ifndef OPENSSL_NO_EC
3576
a2f9200f 3577int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3578{
555cbb32 3579 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3580 /* key usage, if present, must allow signing */
ce0c1f2b 3581 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3582 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3583 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3584 return 0;
3585 }
3586 }
0f113f3e
MC		 3587 return 1; /* all checks are ok */
3588}
ea262260 3589
ef236ec3
DSH		 3590#endif
3591
a398f821 3592int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3593 size_t *serverinfo_length)
3594{
555cbb32 3595 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 3596 *serverinfo_length = 0;
3597
a497cf25 3598 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3599 return 0;
3600
a497cf25
DSH		 3601 *serverinfo = cpk->serverinfo;
3602 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3603 return 1;
3604}
0f113f3e
MC		 3605
3606void ssl_update_cache(SSL *s, int mode)
3607{
3608 int i;
3609
3610 /*
3611 * If the session_id_length is 0, we are not supposed to cache it, and it
3612 * would be rather hard to do anyway :-)
3613 */
3614 if (s->session->session_id_length == 0)
3615 return;
3616
d316cdcf
BK		 3617 /*
3618 * If sid_ctx_length is 0 there is no specific application context
3619 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 3620 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3621 * indication that this is actually a session for the proper application
3622 * context, and the *handshake* will fail, not just the resumption attempt.
3623 * Do not cache (on the server) these sessions that are not resumable
3624 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 3625 */
c4fa1f7f 3626 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 3627 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3628 return;
3629
0f113f3e 3630 i = s->session_ctx->session_cache_mode;
5d61491c 3631 if ((i & mode) != 0
ee94ec2e
MC		 3632 && (!s->hit || SSL_IS_TLS13(s))) {
3633 /*
3634 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 3635 * normally don't do this because by default it's a full stateless ticket
3636 * with only a dummy session id so there is no reason to cache it,
3637 * unless:
ee94ec2e
MC		 3638 * - we are doing early_data, in which case we cache so that we can
3639 * detect replays
3640 * - the application has set a remove_session_cb so needs to know about
3641 * session timeout events
6cc0b3c2 3642 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 3643 */
3644 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3645 && (!SSL_IS_TLS13(s)
3646 || !s->server
5d263fb7
MC		 3647 || (s->max_early_data > 0
3648 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 3649 || s->session_ctx->remove_session_cb != NULL
3650 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 3651 SSL_CTX_add_session(s->session_ctx, s->session);
3652
3653 /*
3654 * Add the session to the external cache. We do this even in server side
3655 * TLSv1.3 without early data because some applications just want to
3656 * know about the creation of a session and aren't doing a full cache.
3657 */
3658 if (s->session_ctx->new_session_cb != NULL) {
3659 SSL_SESSION_up_ref(s->session);
3660 if (!s->session_ctx->new_session_cb(s, s->session))
3661 SSL_SESSION_free(s->session);
3662 }
0f113f3e
MC		 3663 }
3664
3665 /* auto flush every 255 connections */
3666 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 3667 TSAN_QUALIFIER int *stat;
1fcb4e4d
BK		 3668 if (mode & SSL_SESS_CACHE_CLIENT)
3669 stat = &s->session_ctx->stats.sess_connect_good;
3670 else
3671 stat = &s->session_ctx->stats.sess_accept_good;
9ef9088c 3672 if ((tsan_load(stat) & 0xff) == 0xff)
0f113f3e 3673 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3674 }
3675}
d02b48c6 3676
3499327b 3677const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 3678{
3679 return ctx->method;
3680}
ba168244 3681
3499327b 3682const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 3683{
26a7d938 3684 return s->method;
0f113f3e 3685}
d02b48c6 3686
4ebb342f 3687int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3688{
0f113f3e
MC		 3689 int ret = 1;
3690
3691 if (s->method != meth) {
919ba009 3692 const SSL_METHOD *sm = s->method;
a230b26e 3693 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3694
919ba009 3695 if (sm->version == meth->version)
0f113f3e
MC		 3696 s->method = meth;
3697 else {
919ba009 3698 sm->ssl_free(s);
0f113f3e
MC		 3699 s->method = meth;
3700 ret = s->method->ssl_new(s);
3701 }
3702
919ba009 3703 if (hf == sm->ssl_connect)
0f113f3e 3704 s->handshake_func = meth->ssl_connect;
919ba009 3705 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3706 s->handshake_func = meth->ssl_accept;
3707 }
26a7d938 3708 return ret;
0f113f3e
MC		 3709}
3710
3711int SSL_get_error(const SSL *s, int i)
3712{
3713 int reason;
3714 unsigned long l;
3715 BIO *bio;
3716
3717 if (i > 0)
26a7d938 3718 return SSL_ERROR_NONE;
0f113f3e
MC		 3719
3720 /*
3721 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3722 * where we do encode the error
3723 */
3724 if ((l = ERR_peek_error()) != 0) {
3725 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3726 return SSL_ERROR_SYSCALL;
0f113f3e 3727 else
26a7d938 3728 return SSL_ERROR_SSL;
0f113f3e
MC		 3729 }
3730
8051ab2b
MC		 3731 if (SSL_want_read(s)) {
3732 bio = SSL_get_rbio(s);
3733 if (BIO_should_read(bio))
26a7d938 3734 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3735 else if (BIO_should_write(bio))
3736 /*
3737 * This one doesn't make too much sense ... We never try to write
3738 * to the rbio, and an application program where rbio and wbio
3739 * are separate couldn't even know what it should wait for.
3740 * However if we ever set s->rwstate incorrectly (so that we have
3741 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3742 * wbio *are* the same, this test works around that bug; so it
3743 * might be safer to keep it.
3744 */
26a7d938 3745 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3746 else if (BIO_should_io_special(bio)) {
3747 reason = BIO_get_retry_reason(bio);
3748 if (reason == BIO_RR_CONNECT)
26a7d938 3749 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3750 else if (reason == BIO_RR_ACCEPT)
26a7d938 3751 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3752 else
26a7d938 3753 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3754 }
8051ab2b 3755 }
0f113f3e 3756
8051ab2b 3757 if (SSL_want_write(s)) {
69687aa8 3758 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3759 bio = s->wbio;
3760 if (BIO_should_write(bio))
26a7d938 3761 return SSL_ERROR_WANT_WRITE;
8051ab2b 3762 else if (BIO_should_read(bio))
2e7dc7cd 3763 /*
8051ab2b 3764 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3765 */
26a7d938 3766 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3767 else if (BIO_should_io_special(bio)) {
3768 reason = BIO_get_retry_reason(bio);
3769 if (reason == BIO_RR_CONNECT)
26a7d938 3770 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3771 else if (reason == BIO_RR_ACCEPT)
26a7d938 3772 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3773 else
26a7d938 3774 return SSL_ERROR_SYSCALL;
0f113f3e 3775 }
07bbc92c 3776 }
6b1bb98f 3777 if (SSL_want_x509_lookup(s))
26a7d938 3778 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3779 if (SSL_want_async(s))
8051ab2b 3780 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3781 if (SSL_want_async_job(s))
8051ab2b 3782 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3783 if (SSL_want_client_hello_cb(s))
3784 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3785
3786 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
555cbb32 3787 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3788 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3789
26a7d938 3790 return SSL_ERROR_SYSCALL;
0f113f3e 3791}
d02b48c6 3792
add2f5ca
MC		 3793static int ssl_do_handshake_intern(void *vargs)
3794{
3795 struct ssl_async_args *args;
3796 SSL *s;
3797
3798 args = (struct ssl_async_args *)vargs;
3799 s = args->s;
3800
3801 return s->handshake_func(s);
3802}
3803
4f43d0e7 3804int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3805{
3806 int ret = 1;
3807
3808 if (s->handshake_func == NULL) {
3809 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3810 return -1;
0f113f3e
MC		 3811 }
3812
3eaa4170 3813 ossl_statem_check_finish_init(s, -1);
49e7fe12 3814
c7f47786 3815 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 3816
3817 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3818 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3819 struct ssl_async_args args;
3820
3821 args.s = s;
3822
7fecbf6f 3823 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3824 } else {
3825 ret = s->handshake_func(s);
3826 }
0f113f3e 3827 }
add2f5ca 3828 return ret;
0f113f3e
MC		 3829}
3830
4f43d0e7 3831void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3832{
3833 s->server = 1;
3834 s->shutdown = 0;
fe3a3291 3835 ossl_statem_clear(s);
0f113f3e 3836 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3837 clear_ciphers(s);
0f113f3e 3838}
d02b48c6 3839
4f43d0e7 3840void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3841{
3842 s->server = 0;
3843 s->shutdown = 0;
fe3a3291 3844 ossl_statem_clear(s);
0f113f3e 3845 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3846 clear_ciphers(s);
0f113f3e 3847}
d02b48c6 3848
4f43d0e7 3849int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3850{
3851 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3852 return 0;
0f113f3e 3853}
d02b48c6 3854
41a15c4f 3855int ssl_undefined_void_function(void)
0f113f3e
MC		 3856{
3857 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3858 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3859 return 0;
0f113f3e 3860}
41a15c4f 3861
0821bcd4 3862int ssl_undefined_const_function(const SSL *s)
0f113f3e 3863{
26a7d938 3864 return 0;
0f113f3e 3865}
0821bcd4 3866
2b8fa1d5 3867const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3868{
3869 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3870 return NULL;
0f113f3e 3871}
d02b48c6 3872
3eb2aff4 3873const char *ssl_protocol_to_string(int version)
7d650072 3874{
2abacef1
MC		 3875 switch(version)
3876 {
3877 case TLS1_3_VERSION:
582a17d6 3878 return "TLSv1.3";
2abacef1
MC		 3879
3880 case TLS1_2_VERSION:
7d650072 3881 return "TLSv1.2";
2abacef1
MC		 3882
3883 case TLS1_1_VERSION:
7d650072 3884 return "TLSv1.1";
2abacef1
MC		 3885
3886 case TLS1_VERSION:
ee3a6c64 3887 return "TLSv1";
2abacef1
MC		 3888
3889 case SSL3_VERSION:
7d650072 3890 return "SSLv3";
2abacef1
MC		 3891
3892 case DTLS1_BAD_VER:
7d650072 3893 return "DTLSv0.9";
2abacef1
MC		 3894
3895 case DTLS1_VERSION:
7d650072 3896 return "DTLSv1";
2abacef1
MC		 3897
3898 case DTLS1_2_VERSION:
7d650072 3899 return "DTLSv1.2";
2abacef1
MC		 3900
3901 default:
3902 return "unknown";
3903 }
0f113f3e 3904}
d02b48c6 3905
7d650072
KR		 3906const char *SSL_get_version(const SSL *s)
3907{
3eb2aff4 3908 return ssl_protocol_to_string(s->version);
7d650072
KR		 3909}
3910
98732979 3911static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 3912{
3913 STACK_OF(X509_NAME) *sk;
3914 X509_NAME *xn;
98732979
MC		 3915 int i;
3916
3917 if (src == NULL) {
3918 *dst = NULL;
3919 return 1;
3920 }
3921
3922 if ((sk = sk_X509_NAME_new_null()) == NULL)
3923 return 0;
3924 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3925 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3926 if (xn == NULL) {
3927 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3928 return 0;
3929 }
3930 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3931 X509_NAME_free(xn);
3932 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3933 return 0;
3934 }
3935 }
3936 *dst = sk;
3937
3938 return 1;
3939}
3940
3941SSL *SSL_dup(SSL *s)
3942{
0f113f3e
MC		 3943 SSL *ret;
3944 int i;
3945
919ba009
VD		 3946 /* If we're not quiescent, just up_ref! */
3947 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3948 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3949 return s;
3950 }
3951
3952 /*
3953 * Otherwise, copy configuration state, and session if set.
3954 */
0f113f3e 3955 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3956 return NULL;
0f113f3e 3957
0f113f3e 3958 if (s->session != NULL) {
919ba009
VD		 3959 /*
3960 * Arranges to share the same session via up_ref. This "copies"
3961 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3962 */
61986d32 3963 if (!SSL_copy_session_id(ret, s))
17dd65e6 3964 goto err;
0f113f3e
MC		 3965 } else {
3966 /*
3967 * No session has been established yet, so we have to expect that
3968 * s->cert or ret->cert will be changed later -- they should not both
3969 * point to the same object, and thus we can't use
3970 * SSL_copy_session_id.
3971 */
919ba009
VD		 3972 if (!SSL_set_ssl_method(ret, s->method))
3973 goto err;
0f113f3e
MC		 3974
3975 if (s->cert != NULL) {
e0e920b1 3976 ssl_cert_free(ret->cert);
0f113f3e
MC		 3977 ret->cert = ssl_cert_dup(s->cert);
3978 if (ret->cert == NULL)
3979 goto err;
3980 }
3981
348240c6
MC		 3982 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3983 (int)s->sid_ctx_length))
69f68237 3984 goto err;
0f113f3e
MC		 3985 }
3986
9f6b22b8
VD		 3987 if (!ssl_dane_dup(ret, s))
3988 goto err;
919ba009 3989 ret->version = s->version;
0f113f3e 3990 ret->options = s->options;
f12dd991
MC		 3991 ret->min_proto_version = s->min_proto_version;
3992 ret->max_proto_version = s->max_proto_version;
0f113f3e
MC		 3993 ret->mode = s->mode;
3994 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3995 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3996 ret->msg_callback = s->msg_callback;
3997 ret->msg_callback_arg = s->msg_callback_arg;
3998 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3999 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4000 ret->generate_session_id = s->generate_session_id;
4001
4002 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4003
0f113f3e
MC		 4004 /* copy app data, a little dangerous perhaps */
4005 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4006 goto err;
4007
0f113f3e 4008 ret->server = s->server;
919ba009
VD		 4009 if (s->handshake_func) {
4010 if (s->server)
4011 SSL_set_accept_state(ret);
4012 else
4013 SSL_set_connect_state(ret);
4014 }
0f113f3e 4015 ret->shutdown = s->shutdown;
0f113f3e
MC		 4016 ret->hit = s->hit;
4017
a974e64a
MC		 4018 ret->default_passwd_callback = s->default_passwd_callback;
4019 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4020
0f113f3e
MC		 4021 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4022
4023 /* dup the cipher_list and cipher_list_by_id stacks */
4024 if (s->cipher_list != NULL) {
4025 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4026 goto err;
4027 }
4028 if (s->cipher_list_by_id != NULL)
4029 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4030 == NULL)
4031 goto err;
4032
4033 /* Dup the client_CA list */
98732979
MC		 4034 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4035 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4036 goto err;
4037
66696478 4038 return ret;
0f113f3e 4039
0f113f3e 4040 err:
66696478
RS		 4041 SSL_free(ret);
4042 return NULL;
0f113f3e 4043}
d02b48c6 4044
4f43d0e7 4045void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 4046{
4047 if (s->enc_read_ctx != NULL) {
846ec07d 4048 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 4049 s->enc_read_ctx = NULL;
4050 }
4051 if (s->enc_write_ctx != NULL) {
846ec07d 4052 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 4053 s->enc_write_ctx = NULL;
4054 }
09b6c2ef 4055#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 4056 COMP_CTX_free(s->expand);
4057 s->expand = NULL;
4058 COMP_CTX_free(s->compress);
4059 s->compress = NULL;
0f113f3e
MC		 4060#endif
4061}
d02b48c6 4062
0821bcd4 4063X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 4064{
4065 if (s->cert != NULL)
26a7d938 4066 return s->cert->key->x509;
0f113f3e 4067 else
26a7d938 4068 return NULL;
0f113f3e 4069}
d02b48c6 4070
a25f9adc 4071EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 4072{
4073 if (s->cert != NULL)
26a7d938 4074 return s->cert->key->privatekey;
0f113f3e 4075 else
26a7d938 4076 return NULL;
0f113f3e 4077}
d02b48c6 4078
a25f9adc 4079X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 4080{
4081 if (ctx->cert != NULL)
4082 return ctx->cert->key->x509;
4083 else
4084 return NULL;
4085}
a25f9adc
DSH		 4086
4087EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4088{
4089 if (ctx->cert != NULL)
4090 return ctx->cert->key->privatekey;
4091 else
4092 return NULL;
4093}
a25f9adc 4094
babb3798 4095const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 4096{
4097 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 4098 return s->session->cipher;
4099 return NULL;
0f113f3e
MC		 4100}
4101
0aed6e44
BK		 4102const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4103{
555cbb32 4104 return s->s3.tmp.new_cipher;
0aed6e44
BK		 4105}
4106
3499327b 4107const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4108{
9a555706
RS		 4109#ifndef OPENSSL_NO_COMP
4110 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4111#else
4112 return NULL;
4113#endif
0f113f3e 4114}
377dcdba 4115
3499327b 4116const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4117{
9a555706
RS		 4118#ifndef OPENSSL_NO_COMP
4119 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4120#else
4121 return NULL;
0f113f3e 4122#endif
9a555706 4123}
0f113f3e 4124
46417569 4125int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 4126{
4127 BIO *bbio;
4128
2e7dc7cd
MC		 4129 if (s->bbio != NULL) {
4130 /* Already buffered. */
4131 return 1;
0f113f3e 4132 }
46417569 4133
2e7dc7cd
MC		 4134 bbio = BIO_new(BIO_f_buffer());
4135 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4136 BIO_free(bbio);
0f113f3e 4137 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 4138 return 0;
0f113f3e 4139 }
2e7dc7cd
MC		 4140 s->bbio = bbio;
4141 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 4142
4143 return 1;
0f113f3e 4144}
413c4f45 4145
b77f3ed1 4146int ssl_free_wbio_buffer(SSL *s)
0f113f3e 4147{
62adbcee 4148 /* callers ensure s is never null */
0f113f3e 4149 if (s->bbio == NULL)
b77f3ed1 4150 return 1;
0f113f3e 4151
2e7dc7cd 4152 s->wbio = BIO_pop(s->wbio);
0f113f3e
MC		 4153 BIO_free(s->bbio);
4154 s->bbio = NULL;
b77f3ed1
MC		 4155
4156 return 1;
0f113f3e
MC		 4157}
4158
4159void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4160{
4161 ctx->quiet_shutdown = mode;
4162}
58964a49 4163
0821bcd4 4164int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4165{
26a7d938 4166 return ctx->quiet_shutdown;
0f113f3e 4167}
58964a49 4168
0f113f3e
MC		 4169void SSL_set_quiet_shutdown(SSL *s, int mode)
4170{
4171 s->quiet_shutdown = mode;
4172}
58964a49 4173
0821bcd4 4174int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4175{
26a7d938 4176 return s->quiet_shutdown;
0f113f3e 4177}
58964a49 4178
0f113f3e
MC		 4179void SSL_set_shutdown(SSL *s, int mode)
4180{
4181 s->shutdown = mode;
4182}
58964a49 4183
0821bcd4 4184int SSL_get_shutdown(const SSL *s)
0f113f3e 4185{
6546e9b2 4186 return s->shutdown;
0f113f3e 4187}
58964a49 4188
0821bcd4 4189int SSL_version(const SSL *s)
0f113f3e 4190{
6546e9b2
AG		 4191 return s->version;
4192}
4193
4194int SSL_client_version(const SSL *s)
4195{
4196 return s->client_version;
0f113f3e 4197}
58964a49 4198
0821bcd4 4199SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4200{
6546e9b2 4201 return ssl->ctx;
0f113f3e
MC		 4202}
4203
4204SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4205{
24a0d393 4206 CERT *new_cert;
0f113f3e
MC		 4207 if (ssl->ctx == ctx)
4208 return ssl->ctx;
0f113f3e 4209 if (ctx == NULL)
222da979 4210 ctx = ssl->session_ctx;
24a0d393
KR		 4211 new_cert = ssl_cert_dup(ctx->cert);
4212 if (new_cert == NULL) {
4213 return NULL;
0f113f3e 4214 }
21181889
MC		 4215
4216 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4217 ssl_cert_free(new_cert);
4218 return NULL;
4219 }
4220
24a0d393
KR		 4221 ssl_cert_free(ssl->cert);
4222 ssl->cert = new_cert;
0f113f3e
MC		 4223
4224 /*
4225 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4226 * so setter APIs must prevent invalid lengths from entering the system.
4227 */
380a522f
MC		 4228 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4229 return NULL;
0f113f3e
MC		 4230
4231 /*
4232 * If the session ID context matches that of the parent SSL_CTX,
4233 * inherit it from the new SSL_CTX as well. If however the context does
4234 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4235 * leave it unchanged.
4236 */
4237 if ((ssl->ctx != NULL) &&
4238 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4239 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4240 ssl->sid_ctx_length = ctx->sid_ctx_length;
4241 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4242 }
4243
16203f7b 4244 SSL_CTX_up_ref(ctx);
a230b26e 4245 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4246 ssl->ctx = ctx;
4247
16203f7b 4248 return ssl->ctx;
0f113f3e 4249}
ed3883d2 4250
4f43d0e7 4251int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4252{
26a7d938 4253 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 4254}
58964a49 4255
d84a7b20
MC		 4256int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4257{
4258 X509_LOOKUP *lookup;
4259
4260 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4261 if (lookup == NULL)
4262 return 0;
6dcb100f
RL		 4263
4264 /* We ignore errors, in case the directory doesn't exist */
4265 ERR_set_mark();
4266
d84a7b20
MC		 4267 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4268
6dcb100f 4269 ERR_pop_to_mark();
d84a7b20
MC		 4270
4271 return 1;
4272}
4273
4274int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4275{
4276 X509_LOOKUP *lookup;
4277
4278 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4279 if (lookup == NULL)
4280 return 0;
4281
6dcb100f
RL		 4282 /* We ignore errors, in case the directory doesn't exist */
4283 ERR_set_mark();
4284
d84a7b20
MC		 4285 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4286
6dcb100f
RL		 4287 ERR_pop_to_mark();
4288
4289 return 1;
4290}
4291
4292int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4293{
4294 X509_LOOKUP *lookup;
4295
4296 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4297 if (lookup == NULL)
4298 return 0;
4299
4300 /* We ignore errors, in case the directory doesn't exist */
4301 ERR_set_mark();
4302
4303 X509_LOOKUP_add_store(lookup, NULL);
4304
4305 ERR_pop_to_mark();
d84a7b20
MC		 4306
4307 return 1;
4308}
4309
6dcb100f
RL		 4310int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4311{
4312 return X509_STORE_load_file(ctx->cert_store, CAfile);
4313}
4314
4315int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4316{
4317 return X509_STORE_load_path(ctx->cert_store, CApath);
4318}
4319
4320int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4321{
4322 return X509_STORE_load_store(ctx->cert_store, CAstore);
4323}
4324
303c0028 4325int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4326 const char *CApath)
4327{
6dcb100f
RL		 4328 if (CAfile == NULL && CApath == NULL)
4329 return 0;
4330 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4331 return 0;
4332 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4333 return 0;
4334 return 1;
0f113f3e 4335}
58964a49 4336
45d87a1f 4337void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4338 void (*cb) (const SSL *ssl, int type, int val))
4339{
4340 ssl->info_callback = cb;
4341}
4342
4343/*
4344 * One compiler (Diab DCC) doesn't like argument names in returned function
4345 * pointer.
4346 */
4347void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4348 int /* type */ ,
4349 int /* val */ ) {
4350 return ssl->info_callback;
4351}
58964a49 4352
0f113f3e
MC		 4353void SSL_set_verify_result(SSL *ssl, long arg)
4354{
4355 ssl->verify_result = arg;
4356}
58964a49 4357
0821bcd4 4358long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4359{
26a7d938 4360 return ssl->verify_result;
0f113f3e
MC		 4361}
4362
d9f1c639 4363size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4364{
6b8f5d0d 4365 if (outlen == 0)
555cbb32
TS		 4366 return sizeof(ssl->s3.client_random);
4367 if (outlen > sizeof(ssl->s3.client_random))
4368 outlen = sizeof(ssl->s3.client_random);
4369 memcpy(out, ssl->s3.client_random, outlen);
d9f1c639 4370 return outlen;
858618e7
NM		 4371}
4372
d9f1c639 4373size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4374{
6b8f5d0d 4375 if (outlen == 0)
555cbb32
TS		 4376 return sizeof(ssl->s3.server_random);
4377 if (outlen > sizeof(ssl->s3.server_random))
4378 outlen = sizeof(ssl->s3.server_random);
4379 memcpy(out, ssl->s3.server_random, outlen);
d9f1c639 4380 return outlen;
858618e7
NM		 4381}
4382
d9f1c639 4383size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4384 unsigned char *out, size_t outlen)
858618e7 4385{
d9f1c639
MC		 4386 if (outlen == 0)
4387 return session->master_key_length;
8c1a5343 4388 if (outlen > session->master_key_length)
858618e7
NM		 4389 outlen = session->master_key_length;
4390 memcpy(out, session->master_key, outlen);
d9f1c639 4391 return outlen;
858618e7
NM		 4392}
4393
725b0f1e 4394int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4395 size_t len)
4396{
4397 if (len > sizeof(sess->master_key))
4398 return 0;
4399
4400 memcpy(sess->master_key, in, len);
4401 sess->master_key_length = len;
911d63f2
MC		 4402 return 1;
4403}
4404
4405
0f113f3e
MC		 4406int SSL_set_ex_data(SSL *s, int idx, void *arg)
4407{
26a7d938 4408 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4409}
4410
4411void *SSL_get_ex_data(const SSL *s, int idx)
4412{
26a7d938 4413 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4414}
4415
0f113f3e
MC		 4416int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4417{
26a7d938 4418 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4419}
4420
4421void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4422{
26a7d938 4423 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4424}
58964a49 4425
0821bcd4 4426X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4427{
26a7d938 4428 return ctx->cert_store;
0f113f3e 4429}
413c4f45 4430
0f113f3e
MC		 4431void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4432{
222561fe 4433 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4434 ctx->cert_store = store;
4435}
413c4f45 4436
b50052db
TS		 4437void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4438{
4439 if (store != NULL)
4440 X509_STORE_up_ref(store);
4441 SSL_CTX_set_cert_store(ctx, store);
4442}
4443
0821bcd4 4444int SSL_want(const SSL *s)
0f113f3e 4445{
26a7d938 4446 return s->rwstate;
0f113f3e 4447}
413c4f45 4448
0f113f3e 4449/**
4f43d0e7
BL		 4450 * \brief Set the callback for generating temporary DH keys.
4451 * \param ctx the SSL context.
4452 * \param dh the callback
4453 */
4454
bc36ee62 4455#ifndef OPENSSL_NO_DH
0f113f3e
MC		 4456void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4457 DH *(*dh) (SSL *ssl, int is_export,
4458 int keylength))
4459{
4460 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4461}
f8c3c05d 4462
0f113f3e
MC		 4463void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4464 int keylength))
4465{
4466 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4467}
79df9d62 4468#endif
15d21c2d 4469
ddac1974
NL		 4470#ifndef OPENSSL_NO_PSK
4471int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4472{
4473 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 4474 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4475 return 0;
4476 }
df6da24b 4477 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4478 if (identity_hint != NULL) {
7644a9ae 4479 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4480 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4481 return 0;
4482 } else
df6da24b 4483 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4484 return 1;
4485}
ddac1974
NL		 4486
4487int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4488{
4489 if (s == NULL)
4490 return 0;
4491
0f113f3e
MC		 4492 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4493 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4494 return 0;
4495 }
df6da24b 4496 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4497 if (identity_hint != NULL) {
7644a9ae 4498 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4499 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4500 return 0;
4501 } else
df6da24b 4502 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4503 return 1;
4504}
ddac1974
NL		 4505
4506const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4507{
4508 if (s == NULL || s->session == NULL)
4509 return NULL;
26a7d938 4510 return s->session->psk_identity_hint;
0f113f3e 4511}
ddac1974
NL		 4512
4513const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4514{
4515 if (s == NULL || s->session == NULL)
4516 return NULL;
26a7d938 4517 return s->session->psk_identity;
0f113f3e 4518}
7806f3dd 4519
8cbfcc70 4520void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4521{
4522 s->psk_client_callback = cb;
4523}
7806f3dd 4524
8cbfcc70 4525void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4526{
4527 ctx->psk_client_callback = cb;
4528}
7806f3dd 4529
8cbfcc70 4530void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4531{
4532 s->psk_server_callback = cb;
4533}
7806f3dd 4534
8cbfcc70 4535void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4536{
4537 ctx->psk_server_callback = cb;
4538}
4539#endif
4540
f46184bd
MC		 4541void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4542{
4543 s->psk_find_session_cb = cb;
4544}
4545
4546void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4547 SSL_psk_find_session_cb_func cb)
4548{
4549 ctx->psk_find_session_cb = cb;
4550}
4551
4552void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4553{
4554 s->psk_use_session_cb = cb;
4555}
4556
4557void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4558 SSL_psk_use_session_cb_func cb)
4559{
4560 ctx->psk_use_session_cb = cb;
4561}
4562
0f113f3e
MC		 4563void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4564 void (*cb) (int write_p, int version,
4565 int content_type, const void *buf,
4566 size_t len, SSL *ssl, void *arg))
4567{
4568 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4569}
4570
4571void SSL_set_msg_callback(SSL *ssl,
4572 void (*cb) (int write_p, int version,
4573 int content_type, const void *buf,
4574 size_t len, SSL *ssl, void *arg))
4575{
4576 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4577}
a661b653 4578
7c2d4fee 4579void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4580 int (*cb) (SSL *ssl,
4581 int
4582 is_forward_secure))
4583{
4584 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4585 (void (*)(void))cb);
4586}
4587
7c2d4fee 4588void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4589 int (*cb) (SSL *ssl,
4590 int is_forward_secure))
4591{
4592 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4593 (void (*)(void))cb);
4594}
4595
c649d10d
TS		 4596void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4597 size_t (*cb) (SSL *ssl, int type,
4598 size_t len, void *arg))
4599{
4600 ctx->record_padding_cb = cb;
4601}
4602
4603void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4604{
4605 ctx->record_padding_arg = arg;
4606}
4607
3499327b 4608void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 4609{
4610 return ctx->record_padding_arg;
4611}
4612
4613int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4614{
4615 /* block size of 0 or 1 is basically no padding */
4616 if (block_size == 1)
4617 ctx->block_padding = 0;
4618 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4619 ctx->block_padding = block_size;
4620 else
4621 return 0;
4622 return 1;
4623}
4624
a6d36303 4625int SSL_set_record_padding_callback(SSL *ssl,
c649d10d
TS		 4626 size_t (*cb) (SSL *ssl, int type,
4627 size_t len, void *arg))
4628{
a6d36303
VF		 4629 BIO *b;
4630
4631 b = SSL_get_wbio(ssl);
4632 if (b == NULL || !BIO_get_ktls_send(b)) {
4633 ssl->record_padding_cb = cb;
4634 return 1;
4635 }
4636 return 0;
c649d10d
TS		 4637}
4638
4639void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4640{
4641 ssl->record_padding_arg = arg;
4642}
4643
3499327b 4644void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d
TS		 4645{
4646 return ssl->record_padding_arg;
4647}
4648
4649int SSL_set_block_padding(SSL *ssl, size_t block_size)
4650{
4651 /* block size of 0 or 1 is basically no padding */
4652 if (block_size == 1)
4653 ssl->block_padding = 0;
4654 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4655 ssl->block_padding = block_size;
4656 else
4657 return 0;
4658 return 1;
4659}
4660
9d0a8bb7
MC		 4661int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4662{
4663 s->num_tickets = num_tickets;
4664
4665 return 1;
4666}
4667
3499327b 4668size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7
MC		 4669{
4670 return s->num_tickets;
4671}
4672
4673int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4674{
4675 ctx->num_tickets = num_tickets;
4676
4677 return 1;
4678}
4679
3499327b 4680size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 4681{
4682 return ctx->num_tickets;
4683}
4684
0f113f3e
MC		 4685/*
4686 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4687 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4688 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4689 * Returns the newly allocated ctx;
8671b898 4690 */
b948e2c5 4691
0f113f3e 4692EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4693{
0f113f3e 4694 ssl_clear_hash_ctx(hash);
bfb0641f 4695 *hash = EVP_MD_CTX_new();
5f3d93e4 4696 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4697 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4698 *hash = NULL;
4699 return NULL;
4700 }
0f113f3e 4701 return *hash;
b948e2c5 4702}
0f113f3e
MC		 4703
4704void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4705{
4706
0d9824c1 4707 EVP_MD_CTX_free(*hash);
0f113f3e 4708 *hash = NULL;
b948e2c5 4709}
a661b653 4710
48fbcbac 4711/* Retrieve handshake hashes */
8c1a5343
MC		 4712int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4713 size_t *hashlen)
48fbcbac 4714{
6e59a892 4715 EVP_MD_CTX *ctx = NULL;
555cbb32 4716 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
8c1a5343
MC		 4717 int hashleni = EVP_MD_CTX_size(hdgst);
4718 int ret = 0;
4719
f63a17d6
MC		 4720 if (hashleni < 0 || (size_t)hashleni > outlen) {
4721 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4722 ERR_R_INTERNAL_ERROR);
28ba2541 4723 goto err;
f63a17d6 4724 }
8c1a5343 4725
bfb0641f 4726 ctx = EVP_MD_CTX_new();
8c1a5343 4727 if (ctx == NULL)
6e59a892 4728 goto err;
8c1a5343 4729
6e59a892 4730 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4731 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4732 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4733 ERR_R_INTERNAL_ERROR);
8c1a5343 4734 goto err;
f63a17d6 4735 }
8c1a5343
MC		 4736
4737 *hashlen = hashleni;
4738
4739 ret = 1;
48fbcbac 4740 err:
bfb0641f 4741 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4742 return ret;
4743}
4744
c04b66b1 4745int SSL_session_reused(const SSL *s)
0f113f3e
MC		 4746{
4747 return s->hit;
4748}
08557cf2 4749
69443116 4750int SSL_is_server(const SSL *s)
0f113f3e
MC		 4751{
4752 return s->server;
4753}
87adf1fa 4754
00db8c60 4755#ifndef OPENSSL_NO_DEPRECATED_1_1_0
47153c72
RS		 4756void SSL_set_debug(SSL *s, int debug)
4757{
4758 /* Old function was do-nothing anyway... */
4759 (void)s;
4760 (void)debug;
4761}
4762#endif
4763
b362ccab 4764void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4765{
4766 s->cert->sec_level = level;
4767}
b362ccab
DSH		 4768
4769int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4770{
4771 return s->cert->sec_level;
4772}
b362ccab 4773
0f113f3e 4774void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4775 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4776 int op, int bits, int nid,
4777 void *other, void *ex))
0f113f3e
MC		 4778{
4779 s->cert->sec_cb = cb;
4780}
b362ccab 4781
a230b26e
EK		 4782int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4783 const SSL_CTX *ctx, int op,
4784 int bits, int nid, void *other,
4785 void *ex) {
0f113f3e
MC		 4786 return s->cert->sec_cb;
4787}
b362ccab
DSH		 4788
4789void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4790{
4791 s->cert->sec_ex = ex;
4792}
b362ccab
DSH		 4793
4794void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4795{
4796 return s->cert->sec_ex;
4797}
b362ccab
DSH		 4798
4799void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4800{
4801 ctx->cert->sec_level = level;
4802}
b362ccab
DSH		 4803
4804int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4805{
4806 return ctx->cert->sec_level;
4807}
b362ccab 4808
0f113f3e 4809void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4810 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4811 int op, int bits, int nid,
4812 void *other, void *ex))
0f113f3e
MC		 4813{
4814 ctx->cert->sec_cb = cb;
4815}
b362ccab 4816
e4646a89
KR		 4817int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4818 const SSL_CTX *ctx,
0f113f3e
MC		 4819 int op, int bits,
4820 int nid,
4821 void *other,
4822 void *ex) {
4823 return ctx->cert->sec_cb;
4824}
b362ccab
DSH		 4825
4826void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4827{
4828 ctx->cert->sec_ex = ex;
4829}
b362ccab
DSH		 4830
4831void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4832{
4833 return ctx->cert->sec_ex;
4834}
b362ccab 4835
8106cb8b
VD		 4836/*
4837 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4838 * can return unsigned long, instead of the generic long return value from the
4839 * control interface.
4840 */
4841unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4842{
4843 return ctx->options;
4844}
a230b26e
EK		 4845
4846unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4847{
4848 return s->options;
4849}
a230b26e 4850
8106cb8b
VD		 4851unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4852{
4853 return ctx->options |= op;
4854}
a230b26e 4855
8106cb8b
VD		 4856unsigned long SSL_set_options(SSL *s, unsigned long op)
4857{
4858 return s->options |= op;
4859}
a230b26e 4860
8106cb8b
VD		 4861unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4862{
4863 return ctx->options &= ~op;
4864}
a230b26e 4865
8106cb8b
VD		 4866unsigned long SSL_clear_options(SSL *s, unsigned long op)
4867{
4868 return s->options &= ~op;
4869}
4870
696178ed
DSH		 4871STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4872{
4873 return s->verified_chain;
4874}
4875
0f113f3e 4876IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4877
4878#ifndef OPENSSL_NO_CT
4879
4880/*
4881 * Moves SCTs from the |src| stack to the |dst| stack.
4882 * The source of each SCT will be set to |origin|.
4883 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4884 * the caller.
4885 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4886 */
a230b26e
EK		 4887static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4888 sct_source_t origin)
ed29e82a
RP		 4889{
4890 int scts_moved = 0;
4891 SCT *sct = NULL;
4892
4893 if (*dst == NULL) {
4894 *dst = sk_SCT_new_null();
4895 if (*dst == NULL) {
4896 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4897 goto err;
4898 }
4899 }
4900
4901 while ((sct = sk_SCT_pop(src)) != NULL) {
4902 if (SCT_set_source(sct, origin) != 1)
4903 goto err;
4904
4905 if (sk_SCT_push(*dst, sct) <= 0)
4906 goto err;
4907 scts_moved += 1;
4908 }
4909
4910 return scts_moved;
a230b26e 4911 err:
ed29e82a 4912 if (sct != NULL)
a230b26e 4913 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4914 return -1;
ed29e82a
RP		 4915}
4916
4917/*
a230b26e 4918 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4919 * Returns the number of SCTs extracted.
a230b26e 4920 */
ed29e82a
RP		 4921static int ct_extract_tls_extension_scts(SSL *s)
4922{
4923 int scts_extracted = 0;
4924
aff8c126
RS		 4925 if (s->ext.scts != NULL) {
4926 const unsigned char *p = s->ext.scts;
4927 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4928
4929 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4930
4931 SCT_LIST_free(scts);
4932 }
4933
4934 return scts_extracted;
4935}
4936
4937/*
4938 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4939 * contains an SCT X509 extension. They will be stored in |s->scts|.
4940 * Returns:
4941 * - The number of SCTs extracted, assuming an OCSP response exists.
4942 * - 0 if no OCSP response exists or it contains no SCTs.
4943 * - A negative integer if an error occurs.
4944 */
4945static int ct_extract_ocsp_response_scts(SSL *s)
4946{
a230b26e 4947# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4948 int scts_extracted = 0;
4949 const unsigned char *p;
4950 OCSP_BASICRESP *br = NULL;
4951 OCSP_RESPONSE *rsp = NULL;
4952 STACK_OF(SCT) *scts = NULL;
4953 int i;
4954
aff8c126 4955 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4956 goto err;
4957
aff8c126
RS		 4958 p = s->ext.ocsp.resp;
4959 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4960 if (rsp == NULL)
4961 goto err;
4962
4963 br = OCSP_response_get1_basic(rsp);
4964 if (br == NULL)
4965 goto err;
4966
4967 for (i = 0; i < OCSP_resp_count(br); ++i) {
4968 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4969
4970 if (single == NULL)
4971 continue;
4972
a230b26e
EK		 4973 scts =
4974 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4975 scts_extracted =
4976 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4977 if (scts_extracted < 0)
4978 goto err;
4979 }
a230b26e 4980 err:
ed29e82a
RP		 4981 SCT_LIST_free(scts);
4982 OCSP_BASICRESP_free(br);
4983 OCSP_RESPONSE_free(rsp);
4984 return scts_extracted;
a230b26e 4985# else
3e41ac35
MC		 4986 /* Behave as if no OCSP response exists */
4987 return 0;
a230b26e 4988# endif
ed29e82a
RP		 4989}
4990
4991/*
4992 * Attempts to extract SCTs from the peer certificate.
4993 * Return the number of SCTs extracted, or a negative integer if an error
4994 * occurs.
4995 */
4996static int ct_extract_x509v3_extension_scts(SSL *s)
4997{
4998 int scts_extracted = 0;
3f3c7d26 4999 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 5000
5001 if (cert != NULL) {
5002 STACK_OF(SCT) *scts =
5003 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5004
5005 scts_extracted =
5006 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5007
5008 SCT_LIST_free(scts);
5009 }
5010
5011 return scts_extracted;
5012}
5013
5014/*
5015 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5016 * response (if it exists) and X509v3 extensions in the certificate.
5017 * Returns NULL if an error occurs.
5018 */
5019const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5020{
5021 if (!s->scts_parsed) {
5022 if (ct_extract_tls_extension_scts(s) < 0 ||
5023 ct_extract_ocsp_response_scts(s) < 0 ||
5024 ct_extract_x509v3_extension_scts(s) < 0)
5025 goto err;
5026
5027 s->scts_parsed = 1;
5028 }
5029 return s->scts;
a230b26e 5030 err:
ed29e82a
RP		 5031 return NULL;
5032}
5033
a230b26e 5034static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 5035 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 5036{
43341433
VD		 5037 return 1;
5038}
5039
a230b26e 5040static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 5041 const STACK_OF(SCT) *scts, void *unused_arg)
5042{
5043 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5044 int i;
ed29e82a 5045
43341433
VD		 5046 for (i = 0; i < count; ++i) {
5047 SCT *sct = sk_SCT_value(scts, i);
5048 int status = SCT_get_validation_status(sct);
5049
5050 if (status == SCT_VALIDATION_STATUS_VALID)
5051 return 1;
5052 }
5053 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5054 return 0;
5055}
5056
5057int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5058 void *arg)
5059{
ed29e82a
RP		 5060 /*
5061 * Since code exists that uses the custom extension handler for CT, look
5062 * for this and throw an error if they have already registered to use CT.
5063 */
5064 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 5065 TLSEXT_TYPE_signed_certificate_timestamp))
5066 {
ed29e82a
RP		 5067 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5068 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5069 return 0;
ed29e82a
RP		 5070 }
5071
ed29e82a 5072 if (callback != NULL) {
a230b26e
EK		 5073 /*
5074 * If we are validating CT, then we MUST accept SCTs served via OCSP
5075 */
ed29e82a 5076 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 5077 return 0;
ed29e82a
RP		 5078 }
5079
43341433
VD		 5080 s->ct_validation_callback = callback;
5081 s->ct_validation_callback_arg = arg;
5082
5083 return 1;
ed29e82a
RP		 5084}
5085
43341433 5086int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 5087 ssl_ct_validation_cb callback, void *arg)
ed29e82a 5088{
ed29e82a
RP		 5089 /*
5090 * Since code exists that uses the custom extension handler for CT, look for
5091 * this and throw an error if they have already registered to use CT.
5092 */
5093 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 5094 TLSEXT_TYPE_signed_certificate_timestamp))
5095 {
ed29e82a
RP		 5096 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5097 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5098 return 0;
ed29e82a
RP		 5099 }
5100
5101 ctx->ct_validation_callback = callback;
5102 ctx->ct_validation_callback_arg = arg;
43341433 5103 return 1;
ed29e82a
RP		 5104}
5105
43341433 5106int SSL_ct_is_enabled(const SSL *s)
ed29e82a 5107{
43341433 5108 return s->ct_validation_callback != NULL;
ed29e82a
RP		 5109}
5110
43341433 5111int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 5112{
43341433 5113 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 5114}
5115
4d482ee2 5116int ssl_validate_ct(SSL *s)
ed29e82a
RP		 5117{
5118 int ret = 0;
3f3c7d26 5119 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 5120 X509 *issuer;
b9aec69a 5121 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 5122 CT_POLICY_EVAL_CTX *ctx = NULL;
5123 const STACK_OF(SCT) *scts;
5124
43341433
VD		 5125 /*
5126 * If no callback is set, the peer is anonymous, or its chain is invalid,
5127 * skip SCT validation - just return success. Applications that continue
5128 * handshakes without certificates, with unverified chains, or pinned leaf
5129 * certificates are outside the scope of the WebPKI and CT.
5130 *
5131 * The above exclusions notwithstanding the vast majority of peers will
5132 * have rather ordinary certificate chains validated by typical
5133 * applications that perform certificate verification and therefore will
5134 * process SCTs when enabled.
5135 */
5136 if (s->ct_validation_callback == NULL || cert == NULL ||
5137 s->verify_result != X509_V_OK ||
a230b26e 5138 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 5139 return 1;
5140
43341433
VD		 5141 /*
5142 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5143 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5144 */
5145 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5146 switch (dane->mtlsa->usage) {
5147 case DANETLS_USAGE_DANE_TA:
5148 case DANETLS_USAGE_DANE_EE:
5149 return 1;
5150 }
ed29e82a
RP		 5151 }
5152
1a37ee94 5153 ctx = CT_POLICY_EVAL_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
ed29e82a 5154 if (ctx == NULL) {
f63a17d6
MC		 5155 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5156 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 5157 goto end;
5158 }
5159
43341433 5160 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 5161 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5162 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5163 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 5164 CT_POLICY_EVAL_CTX_set_time(
5165 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 5166
5167 scts = SSL_get0_peer_scts(s);
5168
43341433
VD		 5169 /*
5170 * This function returns success (> 0) only when all the SCTs are valid, 0
5171 * when some are invalid, and < 0 on various internal errors (out of
5172 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5173 * reason to abort the handshake, that decision is up to the callback.
5174 * Therefore, we error out only in the unexpected case that the return
5175 * value is negative.
5176 *
5177 * XXX: One might well argue that the return value of this function is an
f430ba31 5178 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 5179 * status of each of the provided SCTs. So long as it correctly separates
5180 * the wheat from the chaff it should return success. Failure in this case
5181 * ought to correspond to an inability to carry out its duties.
5182 */
5183 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 5184 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5185 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 5186 goto end;
5187 }
5188
5189 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5190 if (ret < 0)
a230b26e 5191 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 5192 if (!ret)
5193 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5194 SSL_R_CALLBACK_FAILED);
ed29e82a 5195
a230b26e 5196 end:
ed29e82a 5197 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 5198 /*
5199 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5200 * failure return code here. Also the application may wish the complete
5201 * the handshake, and then disconnect cleanly at a higher layer, after
5202 * checking the verification status of the completed connection.
5203 *
5204 * We therefore force a certificate verification failure which will be
5205 * visible via SSL_get_verify_result() and cached as part of any resumed
5206 * session.
5207 *
5208 * Note: the permissive callback is for information gathering only, always
5209 * returns success, and does not affect verification status. Only the
5210 * strict callback or a custom application-specified callback can trigger
5211 * connection failure or record a verification error.
5212 */
5213 if (ret <= 0)
5214 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 5215 return ret;
5216}
5217
43341433
VD		 5218int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5219{
5220 switch (validation_mode) {
5221 default:
5222 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5223 return 0;
5224 case SSL_CT_VALIDATION_PERMISSIVE:
5225 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5226 case SSL_CT_VALIDATION_STRICT:
5227 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5228 }
5229}
5230
5231int SSL_enable_ct(SSL *s, int validation_mode)
5232{
5233 switch (validation_mode) {
5234 default:
5235 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5236 return 0;
5237 case SSL_CT_VALIDATION_PERMISSIVE:
5238 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5239 case SSL_CT_VALIDATION_STRICT:
5240 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5241 }
5242}
5243
ed29e82a
RP		 5244int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5245{
328f36c5 5246 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 5247}
5248
5249int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5250{
5251 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5252}
5253
a230b26e 5254void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 5255{
5256 CTLOG_STORE_free(ctx->ctlog_store);
5257 ctx->ctlog_store = logs;
5258}
5259
5260const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5261{
5262 return ctx->ctlog_store;
5263}
5264
6b1bb98f
BK		 5265#endif /* OPENSSL_NO_CT */
5266
a9c0d8be
DB		 5267void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5268 void *arg)
6b1bb98f 5269{
a9c0d8be
DB		 5270 c->client_hello_cb = cb;
5271 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 5272}
5273
a9c0d8be 5274int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 5275{
5276 if (s->clienthello == NULL)
5277 return 0;
5278 return s->clienthello->isv2;
5279}
5280
a9c0d8be 5281unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 5282{
5283 if (s->clienthello == NULL)
5284 return 0;
5285 return s->clienthello->legacy_version;
5286}
5287
a9c0d8be 5288size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5289{
5290 if (s->clienthello == NULL)
5291 return 0;
5292 if (out != NULL)
5293 *out = s->clienthello->random;
5294 return SSL3_RANDOM_SIZE;
5295}
5296
a9c0d8be 5297size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5298{
5299 if (s->clienthello == NULL)
5300 return 0;
5301 if (out != NULL)
5302 *out = s->clienthello->session_id;
5303 return s->clienthello->session_id_len;
5304}
5305
a9c0d8be 5306size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5307{
5308 if (s->clienthello == NULL)
5309 return 0;
5310 if (out != NULL)
5311 *out = PACKET_data(&s->clienthello->ciphersuites);
5312 return PACKET_remaining(&s->clienthello->ciphersuites);
5313}
5314
a9c0d8be 5315size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5316{
5317 if (s->clienthello == NULL)
5318 return 0;
5319 if (out != NULL)
5320 *out = s->clienthello->compressions;
5321 return s->clienthello->compressions_len;
5322}
5323
a9c0d8be 5324int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5325{
5326 RAW_EXTENSION *ext;
5327 int *present;
5328 size_t num = 0, i;
5329
5330 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5331 return 0;
5332 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5333 ext = s->clienthello->pre_proc_exts + i;
5334 if (ext->present)
5335 num++;
5336 }
6fda11ae 5337 if (num == 0) {
5338 *out = NULL;
5339 *outlen = 0;
5340 return 1;
5341 }
cdb10bae
RS		 5342 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5343 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5344 ERR_R_MALLOC_FAILURE);
193b5d76 5345 return 0;
cdb10bae 5346 }
193b5d76
BK		 5347 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5348 ext = s->clienthello->pre_proc_exts + i;
5349 if (ext->present) {
5350 if (ext->received_order >= num)
5351 goto err;
5352 present[ext->received_order] = ext->type;
5353 }
5354 }
5355 *out = present;
5356 *outlen = num;
5357 return 1;
5358 err:
5359 OPENSSL_free(present);
5360 return 0;
5361}
5362
a9c0d8be 5363int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5364 size_t *outlen)
5365{
5366 size_t i;
5367 RAW_EXTENSION *r;
5368
5369 if (s->clienthello == NULL)
5370 return 0;
5371 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5372 r = s->clienthello->pre_proc_exts + i;
5373 if (r->present && r->type == type) {
5374 if (out != NULL)
5375 *out = PACKET_data(&r->data);
5376 if (outlen != NULL)
5377 *outlen = PACKET_remaining(&r->data);
5378 return 1;
5379 }
5380 }
5381 return 0;
5382}
2faa1b48 5383
a58eb06d
TS		 5384int SSL_free_buffers(SSL *ssl)
5385{
5386 RECORD_LAYER *rl = &ssl->rlayer;
5387
5388 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5389 return 0;
5390
5391 RECORD_LAYER_release(rl);
5392 return 1;
5393}
5394
5395int SSL_alloc_buffers(SSL *ssl)
5396{
5397 return ssl3_setup_buffers(ssl);
5398}
5399
2faa1b48
CB		 5400void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5401{
5402 ctx->keylog_callback = cb;
5403}
5404
5405SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5406{
5407 return ctx->keylog_callback;
5408}
5409
5410static int nss_keylog_int(const char *prefix,
5411 SSL *ssl,
5412 const uint8_t *parameter_1,
5413 size_t parameter_1_len,
5414 const uint8_t *parameter_2,
5415 size_t parameter_2_len)
5416{
5417 char *out = NULL;
5418 char *cursor = NULL;
5419 size_t out_len = 0;
5420 size_t i;
5421 size_t prefix_len;
5422
20870286
P		 5423 if (ssl->ctx->keylog_callback == NULL)
5424 return 1;
2faa1b48
CB		 5425
5426 /*
5427 * Our output buffer will contain the following strings, rendered with
5428 * space characters in between, terminated by a NULL character: first the
5429 * prefix, then the first parameter, then the second parameter. The
5430 * meaning of each parameter depends on the specific key material being
5431 * logged. Note that the first and second parameters are encoded in
5432 * hexadecimal, so we need a buffer that is twice their lengths.
5433 */
5434 prefix_len = strlen(prefix);
e931f370 5435 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
2faa1b48 5436 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 5437 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5438 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5439 return 0;
5440 }
5441
5442 strcpy(cursor, prefix);
5443 cursor += prefix_len;
5444 *cursor++ = ' ';
5445
5446 for (i = 0; i < parameter_1_len; i++) {
5447 sprintf(cursor, "%02x", parameter_1[i]);
5448 cursor += 2;
5449 }
5450 *cursor++ = ' ';
5451
5452 for (i = 0; i < parameter_2_len; i++) {
5453 sprintf(cursor, "%02x", parameter_2[i]);
5454 cursor += 2;
5455 }
5456 *cursor = '\0';
5457
5458 ssl->ctx->keylog_callback(ssl, (const char *)out);
e931f370 5459 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 5460 return 1;
5461
5462}
5463
5464int ssl_log_rsa_client_key_exchange(SSL *ssl,
5465 const uint8_t *encrypted_premaster,
5466 size_t encrypted_premaster_len,
5467 const uint8_t *premaster,
5468 size_t premaster_len)
5469{
5470 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 5471 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5472 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5473 return 0;
5474 }
5475
f0deb4d3 5476 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5477 return nss_keylog_int("RSA",
5478 ssl,
5479 encrypted_premaster,
f0deb4d3 5480 8,
2faa1b48
CB		 5481 premaster,
5482 premaster_len);
5483}
5484
2c7bd692
CB		 5485int ssl_log_secret(SSL *ssl,
5486 const char *label,
5487 const uint8_t *secret,
5488 size_t secret_len)
2faa1b48 5489{
2c7bd692 5490 return nss_keylog_int(label,
2faa1b48 5491 ssl,
555cbb32 5492 ssl->s3.client_random,
2c7bd692
CB		 5493 SSL3_RANDOM_SIZE,
5494 secret,
5495 secret_len);
2faa1b48
CB		 5496}
5497
ccb8e6e0
BK		 5498#define SSLV2_CIPHER_LEN 3
5499
f63a17d6 5500int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5501{
ccb8e6e0 5502 int n;
ccb8e6e0
BK		 5503
5504 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5505
5506 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5507 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5508 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5509 return 0;
ccb8e6e0
BK		 5510 }
5511
5512 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5513 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 5514 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5515 return 0;
ccb8e6e0
BK		 5516 }
5517
555cbb32
TS		 5518 OPENSSL_free(s->s3.tmp.ciphers_raw);
5519 s->s3.tmp.ciphers_raw = NULL;
5520 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5521
5522 if (sslv2format) {
5523 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5524 PACKET sslv2ciphers = *cipher_suites;
5525 unsigned int leadbyte;
5526 unsigned char *raw;
5527
5528 /*
5529 * We store the raw ciphers list in SSLv3+ format so we need to do some
5530 * preprocessing to convert the list first. If there are any SSLv2 only
5531 * ciphersuites with a non-zero leading byte then we are going to
5532 * slightly over allocate because we won't store those. But that isn't a
5533 * problem.
5534 */
5535 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 5536 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 5537 if (raw == NULL) {
f63a17d6
MC		 5538 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5539 ERR_R_MALLOC_FAILURE);
5540 return 0;
ccb8e6e0 5541 }
555cbb32 5542 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5543 PACKET_remaining(&sslv2ciphers) > 0;
5544 raw += TLS_CIPHER_LEN) {
5545 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5546 || (leadbyte == 0
5547 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5548 TLS_CIPHER_LEN))
5549 || (leadbyte != 0
5550 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5551 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5552 SSL_R_BAD_PACKET);
555cbb32
TS		 5553 OPENSSL_free(s->s3.tmp.ciphers_raw);
5554 s->s3.tmp.ciphers_raw = NULL;
5555 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 5556 return 0;
ccb8e6e0
BK		 5557 }
5558 if (leadbyte == 0)
555cbb32 5559 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 5560 }
555cbb32
TS		 5561 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5562 &s->s3.tmp.ciphers_rawlen)) {
f63a17d6
MC		 5563 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5564 ERR_R_INTERNAL_ERROR);
5565 return 0;
ccb8e6e0 5566 }
90134d98 5567 return 1;
90134d98
BK		 5568}
5569
5570int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5571 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5572 STACK_OF(SSL_CIPHER) **scsvs)
5573{
90134d98
BK		 5574 PACKET pkt;
5575
5576 if (!PACKET_buf_init(&pkt, bytes, len))
5577 return 0;
f63a17d6 5578 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5579}
5580
5581int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5582 STACK_OF(SSL_CIPHER) **skp,
5583 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5584 int sslv2format, int fatal)
90134d98
BK		 5585{
5586 const SSL_CIPHER *c;
5587 STACK_OF(SSL_CIPHER) *sk = NULL;
5588 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5589 int n;
5590 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5591 unsigned char cipher[SSLV2_CIPHER_LEN];
5592
5593 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5594
5595 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5596 if (fatal)
5597 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5598 SSL_R_NO_CIPHERS_SPECIFIED);
5599 else
5600 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5601 return 0;
5602 }
5603
5604 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5605 if (fatal)
5606 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5607 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5608 else
5609 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5610 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5611 return 0;
5612 }
5613
5614 sk = sk_SSL_CIPHER_new_null();
5615 scsvs = sk_SSL_CIPHER_new_null();
5616 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5617 if (fatal)
5618 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5619 ERR_R_MALLOC_FAILURE);
5620 else
5621 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5622 goto err;
5623 }
ccb8e6e0
BK		 5624
5625 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5626 /*
5627 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5628 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5629 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5630 */
5631 if (sslv2format && cipher[0] != '\0')
5632 continue;
5633
ccb8e6e0
BK		 5634 /* For SSLv2-compat, ignore leading 0-byte. */
5635 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5636 if (c != NULL) {
90134d98
BK		 5637 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5638 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5639 if (fatal)
5640 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5641 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5642 else
5643 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5644 goto err;
5645 }
5646 }
5647 }
5648 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5649 if (fatal)
5650 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5651 SSL_R_BAD_LENGTH);
5652 else
5653 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5654 goto err;
5655 }
5656
90134d98
BK		 5657 if (skp != NULL)
5658 *skp = sk;
5659 else
5660 sk_SSL_CIPHER_free(sk);
5661 if (scsvs_out != NULL)
5662 *scsvs_out = scsvs;
5663 else
5664 sk_SSL_CIPHER_free(scsvs);
5665 return 1;
ccb8e6e0
BK		 5666 err:
5667 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5668 sk_SSL_CIPHER_free(scsvs);
5669 return 0;
ccb8e6e0 5670}
3fc8d856
MC		 5671
5672int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5673{
5674 ctx->max_early_data = max_early_data;
5675
5676 return 1;
5677}
5678
46dcb945 5679uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5680{
5681 return ctx->max_early_data;
5682}
5683
5684int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5685{
5686 s->max_early_data = max_early_data;
5687
5688 return 1;
5689}
5690
a8e75d56 5691uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5692{
5693 return s->max_early_data;
5694}
ae3947de 5695
4e8548e8
MC		 5696int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5697{
5698 ctx->recv_max_early_data = recv_max_early_data;
5699
5700 return 1;
5701}
5702
5703uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5704{
5705 return ctx->recv_max_early_data;
5706}
5707
5708int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5709{
5710 s->recv_max_early_data = recv_max_early_data;
5711
5712 return 1;
5713}
5714
5715uint32_t SSL_get_recv_max_early_data(const SSL *s)
5716{
5717 return s->recv_max_early_data;
5718}
5719
cf72c757
F		 5720__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5721{
5722 /* Return any active Max Fragment Len extension */
5723 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5724 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5725
5726 /* return current SSL connection setting */
5727 return ssl->max_send_fragment;
5728}
5729
5730__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5731{
5732 /* Return a value regarding an active Max Fragment Len extension */
5733 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5734 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5735 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5736
5737 /* else limit |split_send_fragment| to current |max_send_fragment| */
5738 if (ssl->split_send_fragment > ssl->max_send_fragment)
5739 return ssl->max_send_fragment;
5740
5741 /* return current SSL connection setting */
5742 return ssl->split_send_fragment;
5743}
042c5753
MC		 5744
5745int SSL_stateless(SSL *s)
5746{
5747 int ret;
5748
5749 /* Ensure there is no state left over from a previous invocation */
5750 if (!SSL_clear(s))
d6bb50a5 5751 return 0;
042c5753
MC		 5752
5753 ERR_clear_error();
5754
555cbb32 5755 s->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 5756 ret = SSL_accept(s);
555cbb32 5757 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 5758
d6bb50a5 5759 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5760 return 1;
5761
e440f513
MC		 5762 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5763 return 0;
5764
5765 return -1;
042c5753 5766}
9d75dce3 5767
e97be718
MC		 5768void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5769{
5770 ctx->pha_enabled = val;
5771}
5772
32097b33 5773void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 5774{
32097b33 5775 ssl->pha_enabled = val;
9d75dce3
TS		 5776}
5777
5778int SSL_verify_client_post_handshake(SSL *ssl)
5779{
5780 if (!SSL_IS_TLS13(ssl)) {
5781 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5782 return 0;
5783 }
5784 if (!ssl->server) {
5785 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5786 return 0;
5787 }
5788
5789 if (!SSL_is_init_finished(ssl)) {
5790 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5791 return 0;
5792 }
5793
5794 switch (ssl->post_handshake_auth) {
5795 case SSL_PHA_NONE:
5796 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5797 return 0;
5798 default:
5799 case SSL_PHA_EXT_SENT:
5800 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5801 return 0;
5802 case SSL_PHA_EXT_RECEIVED:
5803 break;
5804 case SSL_PHA_REQUEST_PENDING:
5805 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5806 return 0;
5807 case SSL_PHA_REQUESTED:
5808 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5809 return 0;
5810 }
5811
5812 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5813
5814 /* checks verify_mode and algorithm_auth */
5815 if (!send_certificate_request(ssl)) {
5816 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5817 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5818 return 0;
5819 }
5820
5821 ossl_statem_set_in_init(ssl, 1);
5822 return 1;
5823}
df0fed9a
TS		 5824
5825int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5826 SSL_CTX_generate_session_ticket_fn gen_cb,
5827 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5828 void *arg)
5829{
5830 ctx->generate_ticket_cb = gen_cb;
5831 ctx->decrypt_ticket_cb = dec_cb;
5832 ctx->ticket_cb_data = arg;
5833 return 1;
5834}
c9598459
MC		 5835
5836void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5837 SSL_allow_early_data_cb_fn cb,
5838 void *arg)
5839{
5840 ctx->allow_early_data_cb = cb;
5841 ctx->allow_early_data_cb_data = arg;
5842}
5843
5844void SSL_set_allow_early_data_cb(SSL *s,
5845 SSL_allow_early_data_cb_fn cb,
5846 void *arg)
5847{
5848 s->allow_early_data_cb = cb;
5849 s->allow_early_data_cb_data = arg;
5850}
c8f6c28a
MC		 5851
5852const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5853 int nid,
5854 const char *properties)
5855{
5fcb97c6
MC		 5856 EVP_CIPHER *ciph;
5857
709b5e8a 5858#ifndef OPENSSL_NO_ENGINE
0618b62c
MC		 5859 ENGINE *eng;
5860
c8f6c28a
MC		 5861 /*
5862 * If there is an Engine available for this cipher we use the "implicit"
5863 * form to ensure we use that engine later.
5864 */
0618b62c
MC		 5865 eng = ENGINE_get_cipher_engine(nid);
5866 if (eng != NULL) {
5867 ENGINE_finish(eng);
c8f6c28a 5868 return EVP_get_cipherbynid(nid);
0618b62c 5869 }
709b5e8a 5870#endif
c8f6c28a 5871
5fcb97c6
MC		 5872 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5873 ERR_set_mark();
5874 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5875 ERR_pop_to_mark();
5876 return ciph;
c8f6c28a
MC		 5877}
5878
5879
5880int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5881{
5882 /* Don't up-ref an implicit EVP_CIPHER */
5883 if (EVP_CIPHER_provider(cipher) == NULL)
5884 return 1;
5885
5886 /*
5887 * The cipher was explicitly fetched and therefore it is safe to cast
5888 * away the const
5889 */
5890 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5891}
5892
5893void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5894{
5895 if (cipher == NULL)
5896 return;
5897
5898 if (EVP_CIPHER_provider(cipher) != NULL) {
5899 /*
5900 * The cipher was explicitly fetched and therefore it is safe to cast
5901 * away the const
5902 */
5903 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5904 }
5905}
5906
5907const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5908 int nid,
5909 const char *properties)
5910{
5fcb97c6
MC		 5911 EVP_MD *md;
5912
709b5e8a 5913#ifndef OPENSSL_NO_ENGINE
0618b62c
MC		 5914 ENGINE *eng;
5915
c8f6c28a
MC		 5916 /*
5917 * If there is an Engine available for this digest we use the "implicit"
5918 * form to ensure we use that engine later.
5919 */
0618b62c
MC		 5920 eng = ENGINE_get_digest_engine(nid);
5921 if (eng != NULL) {
5922 ENGINE_finish(eng);
c8f6c28a 5923 return EVP_get_digestbynid(nid);
0618b62c 5924 }
709b5e8a 5925#endif
c8f6c28a
MC		 5926
5927 /* Otherwise we do an explicit fetch */
5fcb97c6
MC		 5928 ERR_set_mark();
5929 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5930 ERR_pop_to_mark();
5931 return md;
c8f6c28a
MC		 5932}
5933
5934int ssl_evp_md_up_ref(const EVP_MD *md)
5935{
5936 /* Don't up-ref an implicit EVP_MD */
5937 if (EVP_MD_provider(md) == NULL)
5938 return 1;
5939
5940 /*
5941 * The digest was explicitly fetched and therefore it is safe to cast
5942 * away the const
5943 */
5944 return EVP_MD_up_ref((EVP_MD *)md);
5945}
5946
5947void ssl_evp_md_free(const EVP_MD *md)
5948{
5949 if (md == NULL)
5950 return;
5951
5952 if (EVP_MD_provider(md) != NULL) {
5953 /*
5954 * The digest was explicitly fetched and therefore it is safe to cast
5955 * away the const
5956 */
5957 EVP_MD_free((EVP_MD *)md);
5958 }
5959}
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