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Change SSL parameter SSL_session_reused const
[thirdparty/openssl.git] / ssl / ssl_lib.c
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0f113f3e 1/*
48e5119a 2 * Copyright 1995-2018 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>
7b63c0fa 13#include "ssl_locl.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
fce78bd4
BE		 29static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
30{
31 (void)r;
32 (void)s;
33 (void)t;
34 return ssl_undefined_function(ssl);
35}
36
37static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
38 int t)
39{
40 (void)r;
41 (void)s;
42 (void)t;
43 return ssl_undefined_function(ssl);
44}
45
46static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
47 unsigned char *s, size_t t, size_t *u)
48{
49 (void)r;
50 (void)s;
51 (void)t;
52 (void)u;
53 return ssl_undefined_function(ssl);
54}
55
56static int ssl_undefined_function_4(SSL *ssl, int r)
57{
58 (void)r;
59 return ssl_undefined_function(ssl);
60}
61
62static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
63 unsigned char *t)
64{
65 (void)r;
66 (void)s;
67 (void)t;
68 return ssl_undefined_function(ssl);
69}
70
71static int ssl_undefined_function_6(int r)
72{
73 (void)r;
74 return ssl_undefined_function(NULL);
75}
76
77static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
78 const char *t, size_t u,
79 const unsigned char *v, size_t w, int x)
80{
81 (void)r;
82 (void)s;
83 (void)t;
84 (void)u;
85 (void)v;
86 (void)w;
87 (void)x;
88 return ssl_undefined_function(ssl);
89}
90
0f113f3e 91SSL3_ENC_METHOD ssl3_undef_enc_method = {
fce78bd4
BE		 92 ssl_undefined_function_1,
93 ssl_undefined_function_2,
0f113f3e 94 ssl_undefined_function,
fce78bd4
BE		 95 ssl_undefined_function_3,
96 ssl_undefined_function_4,
97 ssl_undefined_function_5,
0f113f3e
MC		 98 NULL, /* client_finished_label */
99 0, /* client_finished_label_len */
100 NULL, /* server_finished_label */
101 0, /* server_finished_label_len */
fce78bd4
BE		 102 ssl_undefined_function_6,
103 ssl_undefined_function_7,
0f113f3e 104};
d02b48c6 105
07bbc92c
MC		 106struct ssl_async_args {
107 SSL *s;
108 void *buf;
348240c6 109 size_t num;
a230b26e 110 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 111 union {
eda75751 112 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 113 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 114 int (*func_other) (SSL *);
add2f5ca 115 } f;
07bbc92c
MC		 116};
117
919ba009
VD		 118static const struct {
119 uint8_t mtype;
120 uint8_t ord;
a230b26e 121 int nid;
919ba009 122} dane_mds[] = {
a230b26e
EK		 123 {
124 DANETLS_MATCHING_FULL, 0, NID_undef
125 },
126 {
127 DANETLS_MATCHING_2256, 1, NID_sha256
128 },
129 {
130 DANETLS_MATCHING_2512, 2, NID_sha512
131 },
919ba009
VD		 132};
133
134static int dane_ctx_enable(struct dane_ctx_st *dctx)
135{
136 const EVP_MD **mdevp;
137 uint8_t *mdord;
138 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 139 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 140 size_t i;
141
5ae4ceb9
VD		 142 if (dctx->mdevp != NULL)
143 return 1;
144
919ba009
VD		 145 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
146 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
147
148 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 149 OPENSSL_free(mdord);
919ba009
VD		 150 OPENSSL_free(mdevp);
151 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
152 return 0;
153 }
154
155 /* Install default entries */
156 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
157 const EVP_MD *md;
158
159 if (dane_mds[i].nid == NID_undef ||
160 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
161 continue;
162 mdevp[dane_mds[i].mtype] = md;
163 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
164 }
165
166 dctx->mdevp = mdevp;
167 dctx->mdord = mdord;
168 dctx->mdmax = mdmax;
169
170 return 1;
171}
172
173static void dane_ctx_final(struct dane_ctx_st *dctx)
174{
175 OPENSSL_free(dctx->mdevp);
176 dctx->mdevp = NULL;
177
178 OPENSSL_free(dctx->mdord);
179 dctx->mdord = NULL;
180 dctx->mdmax = 0;
181}
182
183static void tlsa_free(danetls_record *t)
184{
185 if (t == NULL)
186 return;
187 OPENSSL_free(t->data);
188 EVP_PKEY_free(t->spki);
189 OPENSSL_free(t);
190}
191
b9aec69a 192static void dane_final(SSL_DANE *dane)
919ba009
VD		 193{
194 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
195 dane->trecs = NULL;
196
197 sk_X509_pop_free(dane->certs, X509_free);
198 dane->certs = NULL;
199
200 X509_free(dane->mcert);
201 dane->mcert = NULL;
202 dane->mtlsa = NULL;
203 dane->mdpth = -1;
204 dane->pdpth = -1;
205}
206
207/*
208 * dane_copy - Copy dane configuration, sans verification state.
209 */
210static int ssl_dane_dup(SSL *to, SSL *from)
211{
212 int num;
213 int i;
214
215 if (!DANETLS_ENABLED(&from->dane))
216 return 1;
217
e431363f 218 num = sk_danetls_record_num(from->dane.trecs);
919ba009 219 dane_final(&to->dane);
5ae4ceb9 220 to->dane.flags = from->dane.flags;
9f6b22b8 221 to->dane.dctx = &to->ctx->dane;
7a908204 222 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 223
224 if (to->dane.trecs == NULL) {
225 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
226 return 0;
227 }
919ba009 228
919ba009
VD		 229 for (i = 0; i < num; ++i) {
230 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 231
919ba009
VD		 232 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
233 t->data, t->dlen) <= 0)
234 return 0;
235 }
236 return 1;
237}
238
a230b26e
EK		 239static int dane_mtype_set(struct dane_ctx_st *dctx,
240 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 241{
242 int i;
243
244 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
a230b26e 245 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 246 return 0;
247 }
248
249 if (mtype > dctx->mdmax) {
250 const EVP_MD **mdevp;
251 uint8_t *mdord;
a230b26e 252 int n = ((int)mtype) + 1;
919ba009
VD		 253
254 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
255 if (mdevp == NULL) {
256 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
257 return -1;
258 }
259 dctx->mdevp = mdevp;
260
261 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
262 if (mdord == NULL) {
263 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
264 return -1;
265 }
266 dctx->mdord = mdord;
267
268 /* Zero-fill any gaps */
a230b26e 269 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 270 mdevp[i] = NULL;
271 mdord[i] = 0;
272 }
273
274 dctx->mdmax = mtype;
275 }
276
277 dctx->mdevp[mtype] = md;
278 /* Coerce ordinal of disabled matching types to 0 */
279 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
280
281 return 1;
282}
283
b9aec69a 284static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 285{
286 if (mtype > dane->dctx->mdmax)
287 return NULL;
288 return dane->dctx->mdevp[mtype];
289}
290
a230b26e
EK		 291static int dane_tlsa_add(SSL_DANE *dane,
292 uint8_t usage,
293 uint8_t selector,
a41a6120 294 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 295{
296 danetls_record *t;
297 const EVP_MD *md = NULL;
298 int ilen = (int)dlen;
299 int i;
9f6b22b8 300 int num;
919ba009
VD		 301
302 if (dane->trecs == NULL) {
303 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
304 return -1;
305 }
306
307 if (ilen < 0 || dlen != (size_t)ilen) {
308 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
309 return 0;
310 }
311
312 if (usage > DANETLS_USAGE_LAST) {
313 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
314 return 0;
315 }
316
317 if (selector > DANETLS_SELECTOR_LAST) {
318 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
319 return 0;
320 }
321
322 if (mtype != DANETLS_MATCHING_FULL) {
323 md = tlsa_md_get(dane, mtype);
324 if (md == NULL) {
325 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
326 return 0;
327 }
328 }
329
330 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
331 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
332 return 0;
333 }
334 if (!data) {
335 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
336 return 0;
337 }
338
339 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
340 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
341 return -1;
342 }
343
344 t->usage = usage;
345 t->selector = selector;
346 t->mtype = mtype;
348240c6 347 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 348 if (t->data == NULL) {
349 tlsa_free(t);
350 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
351 return -1;
352 }
348240c6
MC		 353 memcpy(t->data, data, dlen);
354 t->dlen = dlen;
919ba009
VD		 355
356 /* Validate and cache full certificate or public key */
357 if (mtype == DANETLS_MATCHING_FULL) {
358 const unsigned char *p = data;
359 X509 *cert = NULL;
360 EVP_PKEY *pkey = NULL;
361
362 switch (selector) {
363 case DANETLS_SELECTOR_CERT:
348240c6 364 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 365 dlen != (size_t)(p - data)) {
366 tlsa_free(t);
367 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
368 return 0;
369 }
370 if (X509_get0_pubkey(cert) == NULL) {
371 tlsa_free(t);
372 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
373 return 0;
374 }
375
376 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
377 X509_free(cert);
378 break;
379 }
380
381 /*
382 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
383 * records that contain full certificates of trust-anchors that are
384 * not present in the wire chain. For usage PKIX-TA(0), we augment
385 * the chain with untrusted Full(0) certificates from DNS, in case
386 * they are missing from the chain.
387 */
388 if ((dane->certs == NULL &&
389 (dane->certs = sk_X509_new_null()) == NULL) ||
390 !sk_X509_push(dane->certs, cert)) {
391 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
392 X509_free(cert);
393 tlsa_free(t);
394 return -1;
395 }
396 break;
397
398 case DANETLS_SELECTOR_SPKI:
348240c6 399 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 400 dlen != (size_t)(p - data)) {
401 tlsa_free(t);
402 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
403 return 0;
404 }
405
406 /*
407 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
408 * records that contain full bare keys of trust-anchors that are
409 * not present in the wire chain.
410 */
411 if (usage == DANETLS_USAGE_DANE_TA)
412 t->spki = pkey;
413 else
414 EVP_PKEY_free(pkey);
415 break;
416 }
417 }
418
419 /*-
420 * Find the right insertion point for the new record.
421 *
422 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
423 * they can be processed first, as they require no chain building, and no
424 * expiration or hostname checks. Because DANE-EE(3) is numerically
425 * largest, this is accomplished via descending sort by "usage".
426 *
427 * We also sort in descending order by matching ordinal to simplify
428 * the implementation of digest agility in the verification code.
429 *
430 * The choice of order for the selector is not significant, so we
431 * use the same descending order for consistency.
432 */
9f6b22b8
VD		 433 num = sk_danetls_record_num(dane->trecs);
434 for (i = 0; i < num; ++i) {
919ba009 435 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 436
919ba009
VD		 437 if (rec->usage > usage)
438 continue;
439 if (rec->usage < usage)
440 break;
441 if (rec->selector > selector)
442 continue;
443 if (rec->selector < selector)
444 break;
445 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
446 continue;
447 break;
448 }
449
450 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
451 tlsa_free(t);
452 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
453 return -1;
454 }
455 dane->umask |= DANETLS_USAGE_BIT(usage);
456
457 return 1;
458}
459
c8feba72
BK		 460/*
461 * Return 0 if there is only one version configured and it was disabled
462 * at configure time. Return 1 otherwise.
463 */
464static int ssl_check_allowed_versions(int min_version, int max_version)
465{
466 int minisdtls = 0, maxisdtls = 0;
467
468 /* Figure out if we're doing DTLS versions or TLS versions */
469 if (min_version == DTLS1_BAD_VER
470 || min_version >> 8 == DTLS1_VERSION_MAJOR)
471 minisdtls = 1;
472 if (max_version == DTLS1_BAD_VER
473 || max_version >> 8 == DTLS1_VERSION_MAJOR)
474 maxisdtls = 1;
475 /* A wildcard version of 0 could be DTLS or TLS. */
476 if ((minisdtls && !maxisdtls && max_version != 0)
477 || (maxisdtls && !minisdtls && min_version != 0)) {
478 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
479 return 0;
480 }
481
482 if (minisdtls || maxisdtls) {
483 /* Do DTLS version checks. */
484 if (min_version == 0)
485 /* Ignore DTLS1_BAD_VER */
486 min_version = DTLS1_VERSION;
487 if (max_version == 0)
488 max_version = DTLS1_2_VERSION;
489#ifdef OPENSSL_NO_DTLS1_2
490 if (max_version == DTLS1_2_VERSION)
491 max_version = DTLS1_VERSION;
492#endif
493#ifdef OPENSSL_NO_DTLS1
494 if (min_version == DTLS1_VERSION)
495 min_version = DTLS1_2_VERSION;
496#endif
79b4444d
DMSP		 497 /* Done massaging versions; do the check. */
498 if (0
c8feba72
BK		 499#ifdef OPENSSL_NO_DTLS1
500 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
501 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
502#endif
503#ifdef OPENSSL_NO_DTLS1_2
504 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
505 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
506#endif
507 )
508 return 0;
509 } else {
510 /* Regular TLS version checks. */
79b4444d
DMSP		 511 if (min_version == 0)
512 min_version = SSL3_VERSION;
513 if (max_version == 0)
514 max_version = TLS1_3_VERSION;
c8feba72 515#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 516 if (max_version == TLS1_3_VERSION)
517 max_version = TLS1_2_VERSION;
c8feba72
BK		 518#endif
519#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 520 if (max_version == TLS1_2_VERSION)
521 max_version = TLS1_1_VERSION;
c8feba72
BK		 522#endif
523#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 524 if (max_version == TLS1_1_VERSION)
525 max_version = TLS1_VERSION;
c8feba72
BK		 526#endif
527#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 528 if (max_version == TLS1_VERSION)
529 max_version = SSL3_VERSION;
c8feba72
BK		 530#endif
531#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 532 if (min_version == SSL3_VERSION)
533 min_version = TLS1_VERSION;
c8feba72
BK		 534#endif
535#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 536 if (min_version == TLS1_VERSION)
537 min_version = TLS1_1_VERSION;
c8feba72
BK		 538#endif
539#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 540 if (min_version == TLS1_1_VERSION)
541 min_version = TLS1_2_VERSION;
c8feba72
BK		 542#endif
543#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 544 if (min_version == TLS1_2_VERSION)
545 min_version = TLS1_3_VERSION;
c8feba72 546#endif
79b4444d
DMSP		 547 /* Done massaging versions; do the check. */
548 if (0
c8feba72
BK		 549#ifdef OPENSSL_NO_SSL3
550 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
551#endif
552#ifdef OPENSSL_NO_TLS1
553 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
554#endif
555#ifdef OPENSSL_NO_TLS1_1
556 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
557#endif
558#ifdef OPENSSL_NO_TLS1_2
559 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
560#endif
561#ifdef OPENSSL_NO_TLS1_3
562 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
563#endif
564 )
565 return 0;
566 }
567 return 1;
568}
569
d31fb0b5
RS		 570static void clear_ciphers(SSL *s)
571{
572 /* clear the current cipher */
573 ssl_clear_cipher_ctx(s);
574 ssl_clear_hash_ctx(&s->read_hash);
575 ssl_clear_hash_ctx(&s->write_hash);
576}
577
4f43d0e7 578int SSL_clear(SSL *s)
0f113f3e 579{
0f113f3e
MC		 580 if (s->method == NULL) {
581 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 582 return 0;
0f113f3e 583 }
d02b48c6 584
0f113f3e
MC		 585 if (ssl_clear_bad_session(s)) {
586 SSL_SESSION_free(s->session);
587 s->session = NULL;
588 }
9368f865
MC		 589 SSL_SESSION_free(s->psksession);
590 s->psksession = NULL;
add8d0e9
MC		 591 OPENSSL_free(s->psksession_id);
592 s->psksession_id = NULL;
593 s->psksession_id_len = 0;
808d1601 594 s->hello_retry_request = 0;
36ff232c 595 s->sent_tickets = 0;
d62bfb39 596
0f113f3e
MC		 597 s->error = 0;
598 s->hit = 0;
599 s->shutdown = 0;
d02b48c6 600
0f113f3e
MC		 601 if (s->renegotiate) {
602 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
603 return 0;
604 }
d02b48c6 605
fe3a3291 606 ossl_statem_clear(s);
413c4f45 607
0f113f3e
MC		 608 s->version = s->method->version;
609 s->client_version = s->version;
610 s->rwstate = SSL_NOTHING;
d02b48c6 611
25aaa98a
RS		 612 BUF_MEM_free(s->init_buf);
613 s->init_buf = NULL;
d31fb0b5 614 clear_ciphers(s);
0f113f3e 615 s->first_packet = 0;
d02b48c6 616
44c04a2e
MC		 617 s->key_update = SSL_KEY_UPDATE_NONE;
618
88834998
TS		 619 EVP_MD_CTX_free(s->pha_dgst);
620 s->pha_dgst = NULL;
621
919ba009
VD		 622 /* Reset DANE verification result state */
623 s->dane.mdpth = -1;
624 s->dane.pdpth = -1;
625 X509_free(s->dane.mcert);
626 s->dane.mcert = NULL;
627 s->dane.mtlsa = NULL;
628
629 /* Clear the verification result peername */
630 X509_VERIFY_PARAM_move_peername(s->param, NULL);
631
0f113f3e
MC		 632 /*
633 * Check to see if we were changed into a different method, if so, revert
24252537 634 * back.
0f113f3e 635 */
24252537 636 if (s->method != s->ctx->method) {
0f113f3e
MC		 637 s->method->ssl_free(s);
638 s->method = s->ctx->method;
639 if (!s->method->ssl_new(s))
a89325e4 640 return 0;
b77f3ed1
MC		 641 } else {
642 if (!s->method->ssl_clear(s))
643 return 0;
644 }
33d23b87 645
af9752e5 646 RECORD_LAYER_clear(&s->rlayer);
33d23b87 647
a89325e4 648 return 1;
0f113f3e 649}
d02b48c6 650
4f43d0e7 651/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 652int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
653{
654 STACK_OF(SSL_CIPHER) *sk;
655
656 ctx->method = meth;
657
2340ed27
BK		 658 if (!SSL_CTX_set_ciphersuites(ctx, TLS_DEFAULT_CIPHERSUITES)) {
659 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
660 return 0;
661 }
f865b081
MC		 662 sk = ssl_create_cipher_list(ctx->method,
663 ctx->tls13_ciphersuites,
664 &(ctx->cipher_list),
0f113f3e
MC		 665 &(ctx->cipher_list_by_id),
666 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
667 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 668 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 669 return 0;
0f113f3e 670 }
208fb891 671 return 1;
0f113f3e 672}
d02b48c6 673
4f43d0e7 674SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 675{
676 SSL *s;
677
678 if (ctx == NULL) {
679 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 680 return NULL;
0f113f3e
MC		 681 }
682 if (ctx->method == NULL) {
683 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 684 return NULL;
0f113f3e
MC		 685 }
686
b51bce94 687 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 688 if (s == NULL)
689 goto err;
0f113f3e 690
e6b10c34 691 s->references = 1;
16203f7b 692 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 693 if (s->lock == NULL) {
694 OPENSSL_free(s);
695 s = NULL;
ae3947de 696 goto err;
e6b10c34 697 }
ae3947de 698
c036e210 699 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 700
0f113f3e 701 s->options = ctx->options;
5ae4ceb9 702 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 703 s->min_proto_version = ctx->min_proto_version;
704 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 705 s->mode = ctx->mode;
706 s->max_cert_list = ctx->max_cert_list;
3fc8d856 707 s->max_early_data = ctx->max_early_data;
4e8548e8 708 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 709 s->num_tickets = ctx->num_tickets;
e97be718 710 s->pha_enabled = ctx->pha_enabled;
0f113f3e 711
f865b081
MC		 712 /* Shallow copy of the ciphersuites stack */
713 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
714 if (s->tls13_ciphersuites == NULL)
715 goto err;
716
2c382349
KR		 717 /*
718 * Earlier library versions used to copy the pointer to the CERT, not
719 * its contents; only when setting new parameters for the per-SSL
720 * copy, ssl_cert_new would be called (and the direct reference to
721 * the per-SSL_CTX settings would be lost, but those still were
722 * indirectly accessed for various purposes, and for that reason they
723 * used to be known as s->ctx->default_cert). Now we don't look at the
724 * SSL_CTX's CERT after having duplicated it once.
725 */
726 s->cert = ssl_cert_dup(ctx->cert);
727 if (s->cert == NULL)
728 goto err;
0f113f3e 729
52e1d7b1 730 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 731 s->msg_callback = ctx->msg_callback;
732 s->msg_callback_arg = ctx->msg_callback_arg;
733 s->verify_mode = ctx->verify_mode;
734 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 735 s->record_padding_cb = ctx->record_padding_cb;
736 s->record_padding_arg = ctx->record_padding_arg;
737 s->block_padding = ctx->block_padding;
0f113f3e 738 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 739 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 740 goto err;
0f113f3e
MC		 741 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
742 s->verify_callback = ctx->default_verify_callback;
743 s->generate_session_id = ctx->generate_session_id;
744
745 s->param = X509_VERIFY_PARAM_new();
a71edf3b 746 if (s->param == NULL)
0f113f3e
MC		 747 goto err;
748 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 749 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 750
751 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 752 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 753 s->split_send_fragment = ctx->split_send_fragment;
754 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 755 if (s->max_pipelines > 1)
756 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 757 if (ctx->default_read_buf_len > 0)
758 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 759
16203f7b 760 SSL_CTX_up_ref(ctx);
0f113f3e 761 s->ctx = ctx;
aff8c126
RS		 762 s->ext.debug_cb = 0;
763 s->ext.debug_arg = NULL;
764 s->ext.ticket_expected = 0;
765 s->ext.status_type = ctx->ext.status_type;
766 s->ext.status_expected = 0;
767 s->ext.ocsp.ids = NULL;
768 s->ext.ocsp.exts = NULL;
769 s->ext.ocsp.resp = NULL;
770 s->ext.ocsp.resp_len = 0;
16203f7b 771 SSL_CTX_up_ref(ctx);
222da979 772 s->session_ctx = ctx;
a230b26e 773#ifndef OPENSSL_NO_EC
aff8c126
RS		 774 if (ctx->ext.ecpointformats) {
775 s->ext.ecpointformats =
776 OPENSSL_memdup(ctx->ext.ecpointformats,
777 ctx->ext.ecpointformats_len);
778 if (!s->ext.ecpointformats)
0f113f3e 779 goto err;
aff8c126
RS		 780 s->ext.ecpointformats_len =
781 ctx->ext.ecpointformats_len;
782 }
783 if (ctx->ext.supportedgroups) {
784 s->ext.supportedgroups =
785 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 786 ctx->ext.supportedgroups_len
b92d7b62 787 * sizeof(*ctx->ext.supportedgroups));
aff8c126 788 if (!s->ext.supportedgroups)
0f113f3e 789 goto err;
aff8c126 790 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 791 }
a230b26e
EK		 792#endif
793#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 794 s->ext.npn = NULL;
a230b26e 795#endif
6f017a8f 796
aff8c126
RS		 797 if (s->ctx->ext.alpn) {
798 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
799 if (s->ext.alpn == NULL)
0f113f3e 800 goto err;
aff8c126
RS		 801 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
802 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 803 }
d02b48c6 804
696178ed 805 s->verified_chain = NULL;
0f113f3e 806 s->verify_result = X509_V_OK;
d02b48c6 807
a974e64a
MC		 808 s->default_passwd_callback = ctx->default_passwd_callback;
809 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
810
0f113f3e 811 s->method = ctx->method;
d02b48c6 812
44c04a2e
MC		 813 s->key_update = SSL_KEY_UPDATE_NONE;
814
c9598459
MC		 815 s->allow_early_data_cb = ctx->allow_early_data_cb;
816 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
817
0f113f3e
MC		 818 if (!s->method->ssl_new(s))
819 goto err;
d02b48c6 820
0f113f3e 821 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 822
61986d32 823 if (!SSL_clear(s))
69f68237 824 goto err;
58964a49 825
25a807bc
F		 826 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
827 goto err;
58964a49 828
ddac1974 829#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 830 s->psk_client_callback = ctx->psk_client_callback;
831 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 832#endif
f46184bd
MC		 833 s->psk_find_session_cb = ctx->psk_find_session_cb;
834 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 835
9f5a87fd
PY		 836 s->async_cb = ctx->async_cb;
837 s->async_cb_arg = ctx->async_cb_arg;
838
07bbc92c
MC		 839 s->job = NULL;
840
ed29e82a
RP		 841#ifndef OPENSSL_NO_CT
842 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 843 ctx->ct_validation_callback_arg))
ed29e82a
RP		 844 goto err;
845#endif
846
16203f7b 847 return s;
0f113f3e 848 err:
62adbcee 849 SSL_free(s);
0f113f3e 850 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 851 return NULL;
0f113f3e 852}
d02b48c6 853
e417070c
RS		 854int SSL_is_dtls(const SSL *s)
855{
856 return SSL_IS_DTLS(s) ? 1 : 0;
857}
858
c5ebfcab 859int SSL_up_ref(SSL *s)
a18a31e4 860{
16203f7b 861 int i;
c5ebfcab 862
2f545ae4 863 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 864 return 0;
865
866 REF_PRINT_COUNT("SSL", s);
867 REF_ASSERT_ISNT(i < 2);
868 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 869}
870
0f113f3e
MC		 871int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
872 unsigned int sid_ctx_len)
873{
cbe29648 874 if (sid_ctx_len > sizeof(ctx->sid_ctx)) {
0f113f3e
MC		 875 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
876 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
877 return 0;
878 }
879 ctx->sid_ctx_length = sid_ctx_len;
880 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 881
882 return 1;
0f113f3e 883}
4eb77b26 884
0f113f3e
MC		 885int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
886 unsigned int sid_ctx_len)
887{
888 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
889 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
890 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
891 return 0;
892 }
893 ssl->sid_ctx_length = sid_ctx_len;
894 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 895
896 return 1;
0f113f3e 897}
b4cadc6e 898
dc644fe2 899int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 900{
16203f7b 901 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 902 ctx->generate_session_id = cb;
16203f7b 903 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 904 return 1;
905}
dc644fe2
GT		 906
907int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 908{
16203f7b 909 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 910 ssl->generate_session_id = cb;
16203f7b 911 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 912 return 1;
913}
dc644fe2 914
f85c9904 915int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 916 unsigned int id_len)
917{
918 /*
919 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 920 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 921 * find if there's a session in the hash table that would conflict with
922 * any new session built out of this id/id_len and the ssl_version in use
923 * by this SSL.
924 */
925 SSL_SESSION r, *p;
926
cbe29648 927 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 928 return 0;
929
930 r.ssl_version = ssl->version;
931 r.session_id_length = id_len;
932 memcpy(r.session_id, id, id_len);
933
e2bb9b9b
TS		 934 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
935 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
936 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 937 return (p != NULL);
938}
dc644fe2 939
bb7cd4e3 940int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 941{
942 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
943}
bb7cd4e3
DSH		 944
945int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 946{
947 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
948}
926a56bf 949
bb7cd4e3 950int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 951{
952 return X509_VERIFY_PARAM_set_trust(s->param, trust);
953}
bb7cd4e3
DSH		 954
955int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 956{
957 return X509_VERIFY_PARAM_set_trust(s->param, trust);
958}
bb7cd4e3 959
919ba009
VD		 960int SSL_set1_host(SSL *s, const char *hostname)
961{
962 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
963}
964
965int SSL_add1_host(SSL *s, const char *hostname)
966{
967 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
968}
969
970void SSL_set_hostflags(SSL *s, unsigned int flags)
971{
972 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
973}
974
4588cb44 975const char *SSL_get0_peername(SSL *s)
919ba009
VD		 976{
977 return X509_VERIFY_PARAM_get0_peername(s->param);
978}
979
980int SSL_CTX_dane_enable(SSL_CTX *ctx)
981{
982 return dane_ctx_enable(&ctx->dane);
983}
984
5ae4ceb9
VD		 985unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
986{
987 unsigned long orig = ctx->dane.flags;
988
989 ctx->dane.flags |= flags;
990 return orig;
991}
992
993unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
994{
995 unsigned long orig = ctx->dane.flags;
996
997 ctx->dane.flags &= ~flags;
998 return orig;
999}
1000
919ba009
VD		 1001int SSL_dane_enable(SSL *s, const char *basedomain)
1002{
b9aec69a 1003 SSL_DANE *dane = &s->dane;
919ba009
VD		 1004
1005 if (s->ctx->dane.mdmax == 0) {
1006 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1007 return 0;
1008 }
1009 if (dane->trecs != NULL) {
1010 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1011 return 0;
1012 }
1013
8d887efa
VD		 1014 /*
1015 * Default SNI name. This rejects empty names, while set1_host below
1016 * accepts them and disables host name checks. To avoid side-effects with
1017 * invalid input, set the SNI name first.
1018 */
aff8c126 1019 if (s->ext.hostname == NULL) {
dccd20d1 1020 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 1021 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1022 return -1;
8d887efa
VD		 1023 }
1024 }
1025
919ba009
VD		 1026 /* Primary RFC6125 reference identifier */
1027 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1028 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1029 return -1;
1030 }
1031
919ba009
VD		 1032 dane->mdpth = -1;
1033 dane->pdpth = -1;
1034 dane->dctx = &s->ctx->dane;
1035 dane->trecs = sk_danetls_record_new_null();
1036
1037 if (dane->trecs == NULL) {
1038 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1039 return -1;
1040 }
1041 return 1;
1042}
1043
5ae4ceb9
VD		 1044unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1045{
1046 unsigned long orig = ssl->dane.flags;
1047
1048 ssl->dane.flags |= flags;
1049 return orig;
1050}
1051
1052unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1053{
1054 unsigned long orig = ssl->dane.flags;
1055
1056 ssl->dane.flags &= ~flags;
1057 return orig;
1058}
1059
919ba009
VD		 1060int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1061{
b9aec69a 1062 SSL_DANE *dane = &s->dane;
919ba009 1063
c0a445a9 1064 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1065 return -1;
1066 if (dane->mtlsa) {
1067 if (mcert)
1068 *mcert = dane->mcert;
1069 if (mspki)
1070 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1071 }
1072 return dane->mdpth;
1073}
1074
1075int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1076 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1077{
b9aec69a 1078 SSL_DANE *dane = &s->dane;
919ba009 1079
c0a445a9 1080 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1081 return -1;
1082 if (dane->mtlsa) {
1083 if (usage)
1084 *usage = dane->mtlsa->usage;
1085 if (selector)
1086 *selector = dane->mtlsa->selector;
1087 if (mtype)
1088 *mtype = dane->mtlsa->mtype;
1089 if (data)
1090 *data = dane->mtlsa->data;
1091 if (dlen)
1092 *dlen = dane->mtlsa->dlen;
1093 }
1094 return dane->mdpth;
1095}
1096
b9aec69a 1097SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1098{
1099 return &s->dane;
1100}
1101
1102int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
a41a6120 1103 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 1104{
1105 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1106}
1107
a230b26e
EK		 1108int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1109 uint8_t ord)
919ba009
VD		 1110{
1111 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1112}
1113
ccf11751 1114int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1115{
1116 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1117}
ccf11751
DSH		 1118
1119int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1120{
1121 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1122}
ccf11751 1123
7af31968 1124X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1125{
1126 return ctx->param;
1127}
7af31968
DSH		 1128
1129X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1130{
1131 return ssl->param;
1132}
7af31968 1133
a5ee80b9 1134void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1135{
1136 ssl_cert_clear_certs(s->cert);
1137}
a5ee80b9 1138
4f43d0e7 1139void SSL_free(SSL *s)
0f113f3e
MC		 1140{
1141 int i;
58964a49 1142
e6e9170d
RS		 1143 if (s == NULL)
1144 return;
2f545ae4 1145 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1146 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1147 if (i > 0)
1148 return;
f3f1cf84 1149 REF_ASSERT_ISNT(i < 0);
d02b48c6 1150
222561fe 1151 X509_VERIFY_PARAM_free(s->param);
919ba009 1152 dane_final(&s->dane);
0f113f3e
MC		 1153 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1154
50ec7505
BP		 1155 RECORD_LAYER_release(&s->rlayer);
1156
b77f3ed1 1157 /* Ignore return value */
2e7dc7cd
MC		 1158 ssl_free_wbio_buffer(s);
1159
65e2d672 1160 BIO_free_all(s->wbio);
50ec7505 1161 s->wbio = NULL;
325cfa85 1162 BIO_free_all(s->rbio);
50ec7505 1163 s->rbio = NULL;
0f113f3e 1164
25aaa98a 1165 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1166
1167 /* add extra stuff */
25aaa98a
RS		 1168 sk_SSL_CIPHER_free(s->cipher_list);
1169 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1170 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
0f113f3e
MC		 1171
1172 /* Make the next call work :-) */
1173 if (s->session != NULL) {
1174 ssl_clear_bad_session(s);
1175 SSL_SESSION_free(s->session);
1176 }
9368f865 1177 SSL_SESSION_free(s->psksession);
add8d0e9 1178 OPENSSL_free(s->psksession_id);
0f113f3e 1179
d31fb0b5 1180 clear_ciphers(s);
d02b48c6 1181
e0e920b1 1182 ssl_cert_free(s->cert);
0f113f3e 1183 /* Free up if allocated */
d02b48c6 1184
aff8c126 1185 OPENSSL_free(s->ext.hostname);
222da979 1186 SSL_CTX_free(s->session_ctx);
e481f9b9 1187#ifndef OPENSSL_NO_EC
aff8c126
RS		 1188 OPENSSL_free(s->ext.ecpointformats);
1189 OPENSSL_free(s->ext.supportedgroups);
a230b26e 1190#endif /* OPENSSL_NO_EC */
aff8c126 1191 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1192#ifndef OPENSSL_NO_OCSP
aff8c126 1193 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1194#endif
ed29e82a
RP		 1195#ifndef OPENSSL_NO_CT
1196 SCT_LIST_free(s->scts);
aff8c126 1197 OPENSSL_free(s->ext.scts);
ed29e82a 1198#endif
aff8c126
RS		 1199 OPENSSL_free(s->ext.ocsp.resp);
1200 OPENSSL_free(s->ext.alpn);
cfef5027 1201 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1202 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1203 OPENSSL_free(s->pha_context);
1204 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1205
fa7c2637 1206 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1207 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1208
696178ed
DSH		 1209 sk_X509_pop_free(s->verified_chain, X509_free);
1210
0f113f3e
MC		 1211 if (s->method != NULL)
1212 s->method->ssl_free(s);
1213
e0e920b1 1214 SSL_CTX_free(s->ctx);
7c3908dd 1215
ff75a257
MC		 1216 ASYNC_WAIT_CTX_free(s->waitctx);
1217
e481f9b9 1218#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1219 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1220#endif
1221
e783bae2 1222#ifndef OPENSSL_NO_SRTP
25aaa98a 1223 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1224#endif
1225
16203f7b
AG		 1226 CRYPTO_THREAD_lock_free(s->lock);
1227
0f113f3e
MC		 1228 OPENSSL_free(s);
1229}
1230
65e2d672 1231void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1232{
65e2d672 1233 BIO_free_all(s->rbio);
3ffbe008
MC		 1234 s->rbio = rbio;
1235}
1236
65e2d672 1237void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1238{
1239 /*
1240 * If the output buffering BIO is still in place, remove it
1241 */
2e7dc7cd
MC		 1242 if (s->bbio != NULL)
1243 s->wbio = BIO_pop(s->wbio);
1244
65e2d672 1245 BIO_free_all(s->wbio);
0f113f3e 1246 s->wbio = wbio;
2e7dc7cd
MC		 1247
1248 /* Re-attach |bbio| to the new |wbio|. */
1249 if (s->bbio != NULL)
1250 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1251}
d02b48c6 1252
3ffbe008
MC		 1253void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1254{
65e2d672
MC		 1255 /*
1256 * For historical reasons, this function has many different cases in
1257 * ownership handling.
1258 */
1259
1260 /* If nothing has changed, do nothing */
1261 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1262 return;
1263
1264 /*
1265 * If the two arguments are equal then one fewer reference is granted by the
1266 * caller than we want to take
1267 */
1268 if (rbio != NULL && rbio == wbio)
1269 BIO_up_ref(rbio);
1270
1271 /*
1272 * If only the wbio is changed only adopt one reference.
1273 */
1274 if (rbio == SSL_get_rbio(s)) {
1275 SSL_set0_wbio(s, wbio);
1276 return;
1277 }
1278 /*
1279 * There is an asymmetry here for historical reasons. If only the rbio is
1280 * changed AND the rbio and wbio were originally different, then we only
1281 * adopt one reference.
1282 */
1283 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1284 SSL_set0_rbio(s, rbio);
1285 return;
1286 }
1287
1288 /* Otherwise, adopt both references. */
1289 SSL_set0_rbio(s, rbio);
1290 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1291}
1292
0821bcd4 1293BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1294{
2e7dc7cd 1295 return s->rbio;
0f113f3e 1296}
d02b48c6 1297
0821bcd4 1298BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1299{
2e7dc7cd
MC		 1300 if (s->bbio != NULL) {
1301 /*
1302 * If |bbio| is active, the true caller-configured BIO is its
1303 * |next_bio|.
1304 */
1305 return BIO_next(s->bbio);
1306 }
1307 return s->wbio;
0f113f3e 1308}
d02b48c6 1309
0821bcd4 1310int SSL_get_fd(const SSL *s)
0f113f3e 1311{
2e7dc7cd 1312 return SSL_get_rfd(s);
0f113f3e 1313}
24cbf3ef 1314
0821bcd4 1315int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1316{
1317 int ret = -1;
1318 BIO *b, *r;
1319
1320 b = SSL_get_rbio(s);
1321 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1322 if (r != NULL)
1323 BIO_get_fd(r, &ret);
26a7d938 1324 return ret;
0f113f3e 1325}
d02b48c6 1326
0821bcd4 1327int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1328{
1329 int ret = -1;
1330 BIO *b, *r;
1331
1332 b = SSL_get_wbio(s);
1333 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1334 if (r != NULL)
1335 BIO_get_fd(r, &ret);
26a7d938 1336 return ret;
0f113f3e 1337}
24cbf3ef 1338
bc36ee62 1339#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1340int SSL_set_fd(SSL *s, int fd)
1341{
1342 int ret = 0;
1343 BIO *bio = NULL;
1344
1345 bio = BIO_new(BIO_s_socket());
1346
1347 if (bio == NULL) {
1348 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1349 goto err;
1350 }
1351 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1352 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1353#ifndef OPENSSL_NO_KTLS
1354 /*
1355 * The new socket is created successfully regardless of ktls_enable.
1356 * ktls_enable doesn't change any functionality of the socket, except
1357 * changing the setsockopt to enable the processing of ktls_start.
1358 * Thus, it is not a problem to call it for non-TLS sockets.
1359 */
1360 ktls_enable(fd);
1361#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1362 ret = 1;
1363 err:
26a7d938 1364 return ret;
0f113f3e 1365}
d02b48c6 1366
0f113f3e
MC		 1367int SSL_set_wfd(SSL *s, int fd)
1368{
2e7dc7cd 1369 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1370
2e7dc7cd
MC		 1371 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1372 || (int)BIO_get_fd(rbio, NULL) != fd) {
1373 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1374
1375 if (bio == NULL) {
1376 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1377 return 0;
0f113f3e
MC		 1378 }
1379 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1380 SSL_set0_wbio(s, bio);
50ec7505
BP		 1381#ifndef OPENSSL_NO_KTLS
1382 /*
1383 * The new socket is created successfully regardless of ktls_enable.
1384 * ktls_enable doesn't change any functionality of the socket, except
1385 * changing the setsockopt to enable the processing of ktls_start.
1386 * Thus, it is not a problem to call it for non-TLS sockets.
1387 */
1388 ktls_enable(fd);
1389#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1390 } else {
65e2d672
MC		 1391 BIO_up_ref(rbio);
1392 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1393 }
1394 return 1;
0f113f3e
MC		 1395}
1396
1397int SSL_set_rfd(SSL *s, int fd)
1398{
2e7dc7cd 1399 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1400
2e7dc7cd
MC		 1401 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1402 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1403 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1404
1405 if (bio == NULL) {
1406 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1407 return 0;
0f113f3e
MC		 1408 }
1409 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1410 SSL_set0_rbio(s, bio);
2e7dc7cd 1411 } else {
65e2d672
MC		 1412 BIO_up_ref(wbio);
1413 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1414 }
1415
1416 return 1;
0f113f3e
MC		 1417}
1418#endif
ca03109c
BM		 1419
1420/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1421size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1422{
1423 size_t ret = 0;
1424
555cbb32
TS		 1425 ret = s->s3.tmp.finish_md_len;
1426 if (count > ret)
1427 count = ret;
1428 memcpy(buf, s->s3.tmp.finish_md, count);
0f113f3e
MC		 1429 return ret;
1430}
ca03109c
BM		 1431
1432/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1433size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1434{
1435 size_t ret = 0;
ca03109c 1436
555cbb32
TS		 1437 ret = s->s3.tmp.peer_finish_md_len;
1438 if (count > ret)
1439 count = ret;
1440 memcpy(buf, s->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1441 return ret;
1442}
ca03109c 1443
0821bcd4 1444int SSL_get_verify_mode(const SSL *s)
0f113f3e 1445{
26a7d938 1446 return s->verify_mode;
0f113f3e 1447}
d02b48c6 1448
0821bcd4 1449int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1450{
1451 return X509_VERIFY_PARAM_get_depth(s->param);
1452}
7f89714e 1453
0f113f3e 1454int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1455 return s->verify_callback;
0f113f3e 1456}
d02b48c6 1457
0821bcd4 1458int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1459{
26a7d938 1460 return ctx->verify_mode;
0f113f3e 1461}
d02b48c6 1462
0821bcd4 1463int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1464{
1465 return X509_VERIFY_PARAM_get_depth(ctx->param);
1466}
1467
1468int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1469 return ctx->default_verify_callback;
0f113f3e
MC		 1470}
1471
1472void SSL_set_verify(SSL *s, int mode,
1473 int (*callback) (int ok, X509_STORE_CTX *ctx))
1474{
1475 s->verify_mode = mode;
1476 if (callback != NULL)
1477 s->verify_callback = callback;
1478}
1479
1480void SSL_set_verify_depth(SSL *s, int depth)
1481{
1482 X509_VERIFY_PARAM_set_depth(s->param, depth);
1483}
1484
1485void SSL_set_read_ahead(SSL *s, int yes)
1486{
52e1d7b1 1487 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1488}
d02b48c6 1489
0821bcd4 1490int SSL_get_read_ahead(const SSL *s)
0f113f3e 1491{
52e1d7b1 1492 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1493}
d02b48c6 1494
0821bcd4 1495int SSL_pending(const SSL *s)
0f113f3e 1496{
8b0e934a
MC		 1497 size_t pending = s->method->ssl_pending(s);
1498
0f113f3e
MC		 1499 /*
1500 * SSL_pending cannot work properly if read-ahead is enabled
1501 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1502 * impossible to fix since SSL_pending cannot report errors that may be
1503 * observed while scanning the new data. (Note that SSL_pending() is
1504 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1505 *
1506 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1507 * we just return INT_MAX.
0f113f3e 1508 */
348240c6 1509 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1510}
d02b48c6 1511
49580f25
MC		 1512int SSL_has_pending(const SSL *s)
1513{
1514 /*
1515 * Similar to SSL_pending() but returns a 1 to indicate that we have
1516 * unprocessed data available or 0 otherwise (as opposed to the number of
1517 * bytes available). Unlike SSL_pending() this will take into account
1518 * read_ahead data. A 1 return simply indicates that we have unprocessed
1519 * data. That data may not result in any application data, or we may fail
1520 * to parse the records for some reason.
1521 */
b8c49611 1522 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1523 return 1;
1524
1525 return RECORD_LAYER_read_pending(&s->rlayer);
1526}
1527
0821bcd4 1528X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1529{
1530 X509 *r;
d02b48c6 1531
0f113f3e
MC		 1532 if ((s == NULL) || (s->session == NULL))
1533 r = NULL;
1534 else
1535 r = s->session->peer;
d02b48c6 1536
0f113f3e 1537 if (r == NULL)
26a7d938 1538 return r;
d02b48c6 1539
05f0fb9f 1540 X509_up_ref(r);
0f113f3e 1541
26a7d938 1542 return r;
0f113f3e 1543}
d02b48c6 1544
0821bcd4 1545STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1546{
1547 STACK_OF(X509) *r;
1548
c34b0f99 1549 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1550 r = NULL;
1551 else
c34b0f99 1552 r = s->session->peer_chain;
0f113f3e
MC		 1553
1554 /*
1555 * If we are a client, cert_chain includes the peer's own certificate; if
1556 * we are a server, it does not.
1557 */
1558
26a7d938 1559 return r;
0f113f3e
MC		 1560}
1561
1562/*
1563 * Now in theory, since the calling process own 't' it should be safe to
1564 * modify. We need to be able to read f without being hassled
1565 */
17dd65e6 1566int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1567{
16203f7b 1568 int i;
0f113f3e 1569 /* Do we need to to SSL locking? */
61986d32 1570 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1571 return 0;
69f68237 1572 }
0f113f3e
MC		 1573
1574 /*
87d9cafa 1575 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1576 */
1577 if (t->method != f->method) {
919ba009
VD		 1578 t->method->ssl_free(t);
1579 t->method = f->method;
1580 if (t->method->ssl_new(t) == 0)
1581 return 0;
0f113f3e
MC		 1582 }
1583
2f545ae4 1584 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1585 ssl_cert_free(t->cert);
1586 t->cert = f->cert;
348240c6 1587 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1588 return 0;
69f68237 1589 }
17dd65e6
MC		 1590
1591 return 1;
0f113f3e 1592}
d02b48c6 1593
58964a49 1594/* Fix this so it checks all the valid key/cert options */
0821bcd4 1595int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1596{
a230b26e
EK		 1597 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1598 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1599 return 0;
0f113f3e
MC		 1600 }
1601 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1602 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1603 return 0;
0f113f3e 1604 }
26a7d938
K		 1605 return X509_check_private_key
1606 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1607}
d02b48c6 1608
58964a49 1609/* Fix this function so that it takes an optional type parameter */
0821bcd4 1610int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1611{
1612 if (ssl == NULL) {
1613 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1614 return 0;
0f113f3e 1615 }
0f113f3e
MC		 1616 if (ssl->cert->key->x509 == NULL) {
1617 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1618 return 0;
0f113f3e
MC		 1619 }
1620 if (ssl->cert->key->privatekey == NULL) {
1621 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1622 return 0;
0f113f3e 1623 }
26a7d938
K		 1624 return X509_check_private_key(ssl->cert->key->x509,
1625 ssl->cert->key->privatekey);
0f113f3e 1626}
d02b48c6 1627
07bbc92c
MC		 1628int SSL_waiting_for_async(SSL *s)
1629{
e8aa8b6c 1630 if (s->job)
82676094
MC		 1631 return 1;
1632
07bbc92c
MC		 1633 return 0;
1634}
1635
ff75a257 1636int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1637{
ff75a257
MC		 1638 ASYNC_WAIT_CTX *ctx = s->waitctx;
1639
1640 if (ctx == NULL)
1641 return 0;
1642 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1643}
f4da39d2 1644
ff75a257
MC		 1645int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1646 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1647{
1648 ASYNC_WAIT_CTX *ctx = s->waitctx;
1649
1650 if (ctx == NULL)
1651 return 0;
1652 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1653 numdelfds);
f4da39d2
MC		 1654}
1655
9f5a87fd
PY		 1656int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1657{
1658 ctx->async_cb = callback;
1659 return 1;
1660}
1661
1662int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1663{
1664 ctx->async_cb_arg = arg;
1665 return 1;
1666}
1667
1668int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1669{
1670 s->async_cb = callback;
1671 return 1;
1672}
1673
1674int SSL_set_async_callback_arg(SSL *s, void *arg)
1675{
1676 s->async_cb_arg = arg;
1677 return 1;
1678}
1679
1680int SSL_get_async_status(SSL *s, int *status)
1681{
1682 ASYNC_WAIT_CTX *ctx = s->waitctx;
1683
1684 if (ctx == NULL)
1685 return 0;
1686 *status = ASYNC_WAIT_CTX_get_status(ctx);
1687 return 1;
1688}
1689
4f43d0e7 1690int SSL_accept(SSL *s)
0f113f3e 1691{
c4c32155 1692 if (s->handshake_func == NULL) {
0f113f3e
MC		 1693 /* Not properly initialized yet */
1694 SSL_set_accept_state(s);
07bbc92c 1695 }
add2f5ca
MC		 1696
1697 return SSL_do_handshake(s);
0f113f3e 1698}
d02b48c6 1699
4f43d0e7 1700int SSL_connect(SSL *s)
0f113f3e 1701{
c4c32155 1702 if (s->handshake_func == NULL) {
0f113f3e
MC		 1703 /* Not properly initialized yet */
1704 SSL_set_connect_state(s);
add2f5ca 1705 }
b31b04d9 1706
add2f5ca 1707 return SSL_do_handshake(s);
0f113f3e 1708}
d02b48c6 1709
0821bcd4 1710long SSL_get_default_timeout(const SSL *s)
0f113f3e 1711{
26a7d938 1712 return s->method->get_timeout();
0f113f3e
MC		 1713}
1714
9f5a87fd
PY		 1715static int ssl_async_wait_ctx_cb(void *arg)
1716{
1717 SSL *s = (SSL *)arg;
1718
1719 return s->async_cb(s, s->async_cb_arg);
1720}
1721
7fecbf6f 1722static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1723 int (*func) (void *))
1724{
add2f5ca 1725 int ret;
ff75a257
MC		 1726 if (s->waitctx == NULL) {
1727 s->waitctx = ASYNC_WAIT_CTX_new();
1728 if (s->waitctx == NULL)
1729 return -1;
9f5a87fd
PY		 1730 if (s->async_cb != NULL
1731 && !ASYNC_WAIT_CTX_set_callback
1732 (s->waitctx, ssl_async_wait_ctx_cb, s))
1733 return -1;
ff75a257 1734 }
e8aa8b6c 1735 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1736 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1737 case ASYNC_ERR:
1738 s->rwstate = SSL_NOTHING;
7fecbf6f 1739 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1740 return -1;
1741 case ASYNC_PAUSE:
1742 s->rwstate = SSL_ASYNC_PAUSED;
1743 return -1;
fc7f190c
MC		 1744 case ASYNC_NO_JOBS:
1745 s->rwstate = SSL_ASYNC_NO_JOBS;
1746 return -1;
add2f5ca
MC		 1747 case ASYNC_FINISH:
1748 s->job = NULL;
1749 return ret;
1750 default:
1751 s->rwstate = SSL_NOTHING;
7fecbf6f 1752 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1753 /* Shouldn't happen */
1754 return -1;
1755 }
1756}
07bbc92c 1757
add2f5ca 1758static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1759{
1760 struct ssl_async_args *args;
1761 SSL *s;
1762 void *buf;
348240c6 1763 size_t num;
07bbc92c
MC		 1764
1765 args = (struct ssl_async_args *)vargs;
1766 s = args->s;
1767 buf = args->buf;
1768 num = args->num;
ec447924
MC		 1769 switch (args->type) {
1770 case READFUNC:
7ee8627f 1771 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1772 case WRITEFUNC:
7ee8627f 1773 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1774 case OTHERFUNC:
1775 return args->f.func_other(s);
1776 }
1777 return -1;
07bbc92c
MC		 1778}
1779
4ee7d3f9 1780int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1781{
c4c32155 1782 if (s->handshake_func == NULL) {
4ee7d3f9 1783 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1784 return -1;
1785 }
1786
1787 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1788 s->rwstate = SSL_NOTHING;
4ee7d3f9 1789 return 0;
0f113f3e 1790 }
07bbc92c 1791
564547e4
MC		 1792 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1793 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1794 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1795 return 0;
1796 }
564547e4
MC		 1797 /*
1798 * If we are a client and haven't received the ServerHello etc then we
1799 * better do that
1800 */
1801 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1802
e8aa8b6c 1803 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1804 struct ssl_async_args args;
eda75751 1805 int ret;
add2f5ca
MC		 1806
1807 args.s = s;
1808 args.buf = buf;
1809 args.num = num;
ec447924
MC		 1810 args.type = READFUNC;
1811 args.f.func_read = s->method->ssl_read;
add2f5ca 1812
eda75751 1813 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1814 *readbytes = s->asyncrw;
eda75751 1815 return ret;
07bbc92c 1816 } else {
54105ddd 1817 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1818 }
0f113f3e
MC		 1819}
1820
4ee7d3f9 1821int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1822{
1823 int ret;
54105ddd 1824 size_t readbytes;
eda75751
MC		 1825
1826 if (num < 0) {
4ee7d3f9 1827 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1828 return -1;
1829 }
1830
4ee7d3f9 1831 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1832
1833 /*
1834 * The cast is safe here because ret should be <= INT_MAX because num is
1835 * <= INT_MAX
1836 */
1837 if (ret > 0)
54105ddd 1838 ret = (int)readbytes;
eda75751
MC		 1839
1840 return ret;
1841}
1842
4ee7d3f9
KR		 1843int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1844{
1845 int ret = ssl_read_internal(s, buf, num, readbytes);
1846
1847 if (ret < 0)
1848 ret = 0;
1849 return ret;
1850}
1851
f533fbd4 1852int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1853{
1854 int ret;
1855
1856 if (!s->server) {
f533fbd4
MC		 1857 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1858 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1859 }
1860
d781d247
MC		 1861 switch (s->early_data_state) {
1862 case SSL_EARLY_DATA_NONE:
1863 if (!SSL_in_before(s)) {
f533fbd4
MC		 1864 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1865 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1866 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1867 }
1868 /* fall through */
1869
1870 case SSL_EARLY_DATA_ACCEPT_RETRY:
1871 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1872 ret = SSL_accept(s);
1873 if (ret <= 0) {
1874 /* NBIO or error */
1875 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1876 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1877 }
1878 /* fall through */
1879
1880 case SSL_EARLY_DATA_READ_RETRY:
1881 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1882 s->early_data_state = SSL_EARLY_DATA_READING;
1883 ret = SSL_read_ex(s, buf, num, readbytes);
1884 /*
ef6c191b
MC		 1885 * State machine will update early_data_state to
1886 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1887 * message
d781d247
MC		 1888 */
1889 if (ret > 0 || (ret <= 0 && s->early_data_state
1890 != SSL_EARLY_DATA_FINISHED_READING)) {
1891 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1892 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1893 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1894 }
1895 } else {
1896 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1897 }
1898 *readbytes = 0;
f533fbd4 1899 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1900
1901 default:
f533fbd4
MC		 1902 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1903 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1904 }
1905}
1906
f5b519c4 1907int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1908{
1909 return s->ext.early_data;
1910}
1911
4ee7d3f9 1912static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1913{
c4c32155 1914 if (s->handshake_func == NULL) {
4ee7d3f9 1915 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1916 return -1;
1917 }
1918
1919 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1920 return 0;
0f113f3e 1921 }
e8aa8b6c 1922 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1923 struct ssl_async_args args;
eda75751 1924 int ret;
0f113f3e 1925
add2f5ca
MC		 1926 args.s = s;
1927 args.buf = buf;
1928 args.num = num;
ec447924
MC		 1929 args.type = READFUNC;
1930 args.f.func_read = s->method->ssl_peek;
07bbc92c 1931
eda75751 1932 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1933 *readbytes = s->asyncrw;
eda75751 1934 return ret;
add2f5ca 1935 } else {
54105ddd 1936 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1937 }
07bbc92c
MC		 1938}
1939
4ee7d3f9 1940int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1941{
1942 int ret;
4ee7d3f9 1943 size_t readbytes;
7ee8627f
MC		 1944
1945 if (num < 0) {
4ee7d3f9 1946 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1947 return -1;
1948 }
1949
4ee7d3f9 1950 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1951
1952 /*
1953 * The cast is safe here because ret should be <= INT_MAX because num is
1954 * <= INT_MAX
1955 */
1956 if (ret > 0)
4ee7d3f9 1957 ret = (int)readbytes;
7ee8627f
MC		 1958
1959 return ret;
1960}
1961
4ee7d3f9
KR		 1962
1963int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1964{
1965 int ret = ssl_peek_internal(s, buf, num, readbytes);
1966
1967 if (ret < 0)
1968 ret = 0;
1969 return ret;
1970}
1971
1972int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1973{
c4c32155 1974 if (s->handshake_func == NULL) {
4ee7d3f9 1975 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1976 return -1;
1977 }
1978
1979 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1980 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1981 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1982 return -1;
0f113f3e 1983 }
07bbc92c 1984
ef6c191b 1985 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1986 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1987 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1988 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1989 return 0;
0a5ece5b 1990 }
564547e4
MC		 1991 /* If we are a client and haven't sent the Finished we better do that */
1992 ossl_statem_check_finish_init(s, 1);
49e7fe12 1993
e8aa8b6c 1994 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1995 int ret;
add2f5ca
MC		 1996 struct ssl_async_args args;
1997
1998 args.s = s;
1999 args.buf = (void *)buf;
2000 args.num = num;
ec447924
MC		 2001 args.type = WRITEFUNC;
2002 args.f.func_write = s->method->ssl_write;
add2f5ca 2003
7ee8627f
MC		 2004 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2005 *written = s->asyncrw;
2006 return ret;
07bbc92c 2007 } else {
7ee8627f 2008 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2009 }
0f113f3e 2010}
d02b48c6 2011
7c3a7561
BP		 2012ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2013{
2014 ossl_ssize_t ret;
2015
2016 if (s->handshake_func == NULL) {
2017 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2018 return -1;
2019 }
2020
2021 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2022 s->rwstate = SSL_NOTHING;
2023 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2024 return -1;
2025 }
2026
2027 if (!BIO_get_ktls_send(s->wbio)) {
2028 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2029 return -1;
2030 }
2031
2032 /* If we have an alert to send, lets send it */
2033 if (s->s3.alert_dispatch) {
2034 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2035 if (ret <= 0) {
2036 /* SSLfatal() already called if appropriate */
2037 return ret;
2038 }
2039 /* if it went, fall through and send more stuff */
2040 }
2041
2042 s->rwstate = SSL_WRITING;
2043 if (BIO_flush(s->wbio) <= 0) {
2044 if (!BIO_should_retry(s->wbio)) {
2045 s->rwstate = SSL_NOTHING;
2046 } else {
2047#ifdef EAGAIN
2048 set_sys_error(EAGAIN);
2049#endif
2050 }
2051 return -1;
2052 }
2053
2054#ifndef OPENSSL_NO_KTLS
2055 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2056#else
2057 ret = -1;
2058#endif
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
2067#ifdef OPENSSL_NO_KTLS
2068 SYSerr(SYS_F_SENDFILE, get_last_sys_error());
2069#else
2070 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2071#endif
2072 return ret;
2073 }
2074 s->rwstate = SSL_NOTHING;
2075 return ret;
2076}
2077
4ee7d3f9
KR		 2078int SSL_write(SSL *s, const void *buf, int num)
2079{
2080 int ret;
2081 size_t written;
2082
2083 if (num < 0) {
2084 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2085 return -1;
2086 }
2087
2088 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2089
2090 /*
2091 * The cast is safe here because ret should be <= INT_MAX because num is
2092 * <= INT_MAX
2093 */
2094 if (ret > 0)
2095 ret = (int)written;
2096
2097 return ret;
2098}
2099
2100int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2101{
2102 int ret = ssl_write_internal(s, buf, num, written);
2103
2104 if (ret < 0)
2105 ret = 0;
2106 return ret;
2107}
2108
0665b4ed 2109int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2110{
a0cb628b 2111 int ret, early_data_state;
2a8db717 2112 size_t writtmp;
f7414b08 2113 uint32_t partialwrite;
49e7fe12 2114
49e7fe12
MC		 2115 switch (s->early_data_state) {
2116 case SSL_EARLY_DATA_NONE:
09f28874
MC		 2117 if (s->server
2118 || !SSL_in_before(s)
add8d0e9
MC		 2119 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2120 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 2121 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2122 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2123 return 0;
2124 }
2125 /* fall through */
2126
2127 case SSL_EARLY_DATA_CONNECT_RETRY:
2128 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2129 ret = SSL_connect(s);
2130 if (ret <= 0) {
2131 /* NBIO or error */
2132 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2133 return 0;
2134 }
2135 /* fall through */
2136
2137 case SSL_EARLY_DATA_WRITE_RETRY:
2138 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2139 /*
2140 * We disable partial write for early data because we don't keep track
2141 * of how many bytes we've written between the SSL_write_ex() call and
2142 * the flush if the flush needs to be retried)
2143 */
2144 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2145 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2146 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2147 s->mode |= partialwrite;
2a8db717
MC		 2148 if (!ret) {
2149 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2150 return ret;
2151 }
2152 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2153 /* fall through */
2154
2155 case SSL_EARLY_DATA_WRITE_FLUSH:
2156 /* The buffering BIO is still in place so we need to flush it */
2157 if (statem_flush(s) != 1)
2158 return 0;
2a8db717 2159 *written = num;
49e7fe12 2160 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2161 return 1;
49e7fe12 2162
116d0da5 2163 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2164 case SSL_EARLY_DATA_READ_RETRY:
2165 early_data_state = s->early_data_state;
09f28874
MC		 2166 /* We are a server writing to an unauthenticated client */
2167 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2168 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2169 /* The buffering BIO is still in place */
2170 if (ret)
2171 (void)BIO_flush(s->wbio);
bbea9f2c 2172 s->early_data_state = early_data_state;
09f28874
MC		 2173 return ret;
2174
49e7fe12 2175 default:
09f28874 2176 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2177 return 0;
2178 }
2179}
2180
4f43d0e7 2181int SSL_shutdown(SSL *s)
0f113f3e
MC		 2182{
2183 /*
2184 * Note that this function behaves differently from what one might
2185 * expect. Return values are 0 for no success (yet), 1 for success; but
2186 * calling it once is usually not enough, even if blocking I/O is used
2187 * (see ssl3_shutdown).
2188 */
2189
c4c32155 2190 if (s->handshake_func == NULL) {
0f113f3e
MC		 2191 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2192 return -1;
2193 }
2194
64f9f406 2195 if (!SSL_in_init(s)) {
e8aa8b6c 2196 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2197 struct ssl_async_args args;
ec447924 2198
64f9f406
MC		 2199 args.s = s;
2200 args.type = OTHERFUNC;
2201 args.f.func_other = s->method->ssl_shutdown;
ec447924 2202
64f9f406
MC		 2203 return ssl_start_async_job(s, &args, ssl_io_intern);
2204 } else {
2205 return s->method->ssl_shutdown(s);
2206 }
ec447924 2207 } else {
64f9f406
MC		 2208 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2209 return -1;
ec447924 2210 }
0f113f3e 2211}
d02b48c6 2212
4fbfe86a 2213int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2214{
f14afcaa 2215 /*
a9998e2f 2216 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2217 * negotiated, and that it is appropriate to call SSL_key_update() instead
2218 * of SSL_renegotiate().
2219 */
44c04a2e
MC		 2220 if (!SSL_IS_TLS13(s)) {
2221 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2222 return 0;
2223 }
2224
2225 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2226 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2227 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2228 return 0;
2229 }
2230
2231 if (!SSL_is_init_finished(s)) {
2232 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2233 return 0;
2234 }
2235
2236 ossl_statem_set_in_init(s, 1);
44c04a2e 2237 s->key_update = updatetype;
44c04a2e
MC		 2238 return 1;
2239}
2240
3499327b 2241int SSL_get_key_update_type(const SSL *s)
53d1d07d
MC		 2242{
2243 return s->key_update;
2244}
2245
4f43d0e7 2246int SSL_renegotiate(SSL *s)
0f113f3e 2247{
44c04a2e
MC		 2248 if (SSL_IS_TLS13(s)) {
2249 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2250 return 0;
44c04a2e 2251 }
cda6b998 2252
db0f35dd
TS		 2253 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2254 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2255 return 0;
2256 }
44959ee4 2257
db0f35dd 2258 s->renegotiate = 1;
0f113f3e 2259 s->new_session = 1;
44959ee4 2260
26a7d938 2261 return s->method->ssl_renegotiate(s);
0f113f3e 2262}
d02b48c6 2263
44959ee4 2264int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2265{
db0f35dd
TS		 2266 if (SSL_IS_TLS13(s)) {
2267 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2268 return 0;
db0f35dd 2269 }
cda6b998 2270
db0f35dd
TS		 2271 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2272 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2273 return 0;
2274 }
c519e89f 2275
db0f35dd 2276 s->renegotiate = 1;
0f113f3e 2277 s->new_session = 0;
c519e89f 2278
26a7d938 2279 return s->method->ssl_renegotiate(s);
0f113f3e 2280}
44959ee4 2281
3499327b 2282int SSL_renegotiate_pending(const SSL *s)
0f113f3e
MC		 2283{
2284 /*
2285 * becomes true when negotiation is requested; false again once a
2286 * handshake has finished
2287 */
2288 return (s->renegotiate != 0);
2289}
2290
2291long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2292{
2293 long l;
2294
2295 switch (cmd) {
2296 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2297 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2298 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2299 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2300 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2301 return l;
0f113f3e
MC		 2302
2303 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2304 s->msg_callback_arg = parg;
2305 return 1;
2306
0f113f3e
MC		 2307 case SSL_CTRL_MODE:
2308 return (s->mode |= larg);
2309 case SSL_CTRL_CLEAR_MODE:
2310 return (s->mode &= ~larg);
2311 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2312 return (long)s->max_cert_list;
0f113f3e 2313 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2314 if (larg < 0)
2315 return 0;
2316 l = (long)s->max_cert_list;
2317 s->max_cert_list = (size_t)larg;
2318 return l;
0f113f3e
MC		 2319 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2320 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2321 return 0;
50ec7505
BP		 2322#ifndef OPENSSL_NO_KTLS
2323 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2324 return 0;
2325#endif /* OPENSSL_NO_KTLS */
0f113f3e 2326 s->max_send_fragment = larg;
d102d9df
MC		 2327 if (s->max_send_fragment < s->split_send_fragment)
2328 s->split_send_fragment = s->max_send_fragment;
2329 return 1;
2330 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2331 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2332 return 0;
2333 s->split_send_fragment = larg;
0f113f3e 2334 return 1;
d102d9df
MC		 2335 case SSL_CTRL_SET_MAX_PIPELINES:
2336 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2337 return 0;
2338 s->max_pipelines = larg;
94777c9c
MC		 2339 if (larg > 1)
2340 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2341 return 1;
0f113f3e 2342 case SSL_CTRL_GET_RI_SUPPORT:
555cbb32 2343 return s->s3.send_connection_binding;
0f113f3e
MC		 2344 case SSL_CTRL_CERT_FLAGS:
2345 return (s->cert->cert_flags |= larg);
2346 case SSL_CTRL_CLEAR_CERT_FLAGS:
2347 return (s->cert->cert_flags &= ~larg);
2348
2349 case SSL_CTRL_GET_RAW_CIPHERLIST:
2350 if (parg) {
555cbb32 2351 if (s->s3.tmp.ciphers_raw == NULL)
0f113f3e 2352 return 0;
555cbb32
TS		 2353 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2354 return (int)s->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2355 } else {
2356 return TLS_CIPHER_LEN;
2357 }
c5364614 2358 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2359 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2360 return -1;
dccd20d1 2361 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2362 return 1;
2363 else
2364 return 0;
7946ab33 2365 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2366 return ssl_check_allowed_versions(larg, s->max_proto_version)
2367 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2368 &s->min_proto_version);
3edabd3c
CH		 2369 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2370 return s->min_proto_version;
7946ab33 2371 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2372 return ssl_check_allowed_versions(s->min_proto_version, larg)
2373 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2374 &s->max_proto_version);
3edabd3c
CH		 2375 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2376 return s->max_proto_version;
0f113f3e 2377 default:
26a7d938 2378 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2379 }
2380}
2381
2382long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2383{
2384 switch (cmd) {
2385 case SSL_CTRL_SET_MSG_CALLBACK:
2386 s->msg_callback = (void (*)
2387 (int write_p, int version, int content_type,
2388 const void *buf, size_t len, SSL *ssl,
2389 void *arg))(fp);
2390 return 1;
2391
2392 default:
26a7d938 2393 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2394 }
2395}
d3442bc7 2396
3c1d6bbc 2397LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2398{
2399 return ctx->sessions;
2400}
2401
2402long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2403{
2404 long l;
2405 /* For some cases with ctx == NULL perform syntax checks */
2406 if (ctx == NULL) {
2407 switch (cmd) {
14536c8c 2408#ifndef OPENSSL_NO_EC
de4d764e
MC		 2409 case SSL_CTRL_SET_GROUPS_LIST:
2410 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2411#endif
2412 case SSL_CTRL_SET_SIGALGS_LIST:
2413 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2414 return tls1_set_sigalgs_list(NULL, parg, 0);
2415 default:
2416 return 0;
2417 }
2418 }
2419
2420 switch (cmd) {
2421 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2422 return ctx->read_ahead;
0f113f3e
MC		 2423 case SSL_CTRL_SET_READ_AHEAD:
2424 l = ctx->read_ahead;
2425 ctx->read_ahead = larg;
26a7d938 2426 return l;
0f113f3e
MC		 2427
2428 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2429 ctx->msg_callback_arg = parg;
2430 return 1;
2431
2432 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2433 return (long)ctx->max_cert_list;
0f113f3e 2434 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2435 if (larg < 0)
2436 return 0;
2437 l = (long)ctx->max_cert_list;
2438 ctx->max_cert_list = (size_t)larg;
2439 return l;
0f113f3e
MC		 2440
2441 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2442 if (larg < 0)
2443 return 0;
2444 l = (long)ctx->session_cache_size;
2445 ctx->session_cache_size = (size_t)larg;
2446 return l;
0f113f3e 2447 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2448 return (long)ctx->session_cache_size;
0f113f3e
MC		 2449 case SSL_CTRL_SET_SESS_CACHE_MODE:
2450 l = ctx->session_cache_mode;
2451 ctx->session_cache_mode = larg;
26a7d938 2452 return l;
0f113f3e 2453 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2454 return ctx->session_cache_mode;
0f113f3e
MC		 2455
2456 case SSL_CTRL_SESS_NUMBER:
26a7d938 2457 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2458 case SSL_CTRL_SESS_CONNECT:
9ef9088c 2459 return tsan_load(&ctx->stats.sess_connect);
0f113f3e 2460 case SSL_CTRL_SESS_CONNECT_GOOD:
9ef9088c 2461 return tsan_load(&ctx->stats.sess_connect_good);
0f113f3e 2462 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
9ef9088c 2463 return tsan_load(&ctx->stats.sess_connect_renegotiate);
0f113f3e 2464 case SSL_CTRL_SESS_ACCEPT:
9ef9088c 2465 return tsan_load(&ctx->stats.sess_accept);
0f113f3e 2466 case SSL_CTRL_SESS_ACCEPT_GOOD:
9ef9088c 2467 return tsan_load(&ctx->stats.sess_accept_good);
0f113f3e 2468 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
9ef9088c 2469 return tsan_load(&ctx->stats.sess_accept_renegotiate);
0f113f3e 2470 case SSL_CTRL_SESS_HIT:
9ef9088c 2471 return tsan_load(&ctx->stats.sess_hit);
0f113f3e 2472 case SSL_CTRL_SESS_CB_HIT:
9ef9088c 2473 return tsan_load(&ctx->stats.sess_cb_hit);
0f113f3e 2474 case SSL_CTRL_SESS_MISSES:
9ef9088c 2475 return tsan_load(&ctx->stats.sess_miss);
0f113f3e 2476 case SSL_CTRL_SESS_TIMEOUTS:
9ef9088c 2477 return tsan_load(&ctx->stats.sess_timeout);
0f113f3e 2478 case SSL_CTRL_SESS_CACHE_FULL:
9ef9088c 2479 return tsan_load(&ctx->stats.sess_cache_full);
0f113f3e
MC		 2480 case SSL_CTRL_MODE:
2481 return (ctx->mode |= larg);
2482 case SSL_CTRL_CLEAR_MODE:
2483 return (ctx->mode &= ~larg);
2484 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2485 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2486 return 0;
2487 ctx->max_send_fragment = larg;
d102d9df 2488 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2489 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2490 return 1;
d102d9df 2491 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2492 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2493 return 0;
2494 ctx->split_send_fragment = larg;
2495 return 1;
2496 case SSL_CTRL_SET_MAX_PIPELINES:
2497 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2498 return 0;
2499 ctx->max_pipelines = larg;
07077415 2500 return 1;
0f113f3e
MC		 2501 case SSL_CTRL_CERT_FLAGS:
2502 return (ctx->cert->cert_flags |= larg);
2503 case SSL_CTRL_CLEAR_CERT_FLAGS:
2504 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2505 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2506 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2507 && ssl_set_version_bound(ctx->method->version, (int)larg,
2508 &ctx->min_proto_version);
3edabd3c
CH		 2509 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2510 return ctx->min_proto_version;
7946ab33 2511 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2512 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2513 && ssl_set_version_bound(ctx->method->version, (int)larg,
2514 &ctx->max_proto_version);
3edabd3c
CH		 2515 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2516 return ctx->max_proto_version;
0f113f3e 2517 default:
26a7d938 2518 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2519 }
2520}
2521
2522long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2523{
2524 switch (cmd) {
2525 case SSL_CTRL_SET_MSG_CALLBACK:
2526 ctx->msg_callback = (void (*)
2527 (int write_p, int version, int content_type,
2528 const void *buf, size_t len, SSL *ssl,
2529 void *arg))(fp);
2530 return 1;
2531
2532 default:
26a7d938 2533 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2534 }
2535}
d3442bc7 2536
ccd86b68 2537int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2538{
90d9e49a
DSH		 2539 if (a->id > b->id)
2540 return 1;
2541 if (a->id < b->id)
2542 return -1;
2543 return 0;
0f113f3e
MC		 2544}
2545
2546int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2547 const SSL_CIPHER *const *bp)
2548{
90d9e49a
DSH		 2549 if ((*ap)->id > (*bp)->id)
2550 return 1;
2551 if ((*ap)->id < (*bp)->id)
2552 return -1;
2553 return 0;
0f113f3e 2554}
d02b48c6 2555
4f43d0e7 2556/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2557 * preference */
0821bcd4 2558STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2559{
2560 if (s != NULL) {
2561 if (s->cipher_list != NULL) {
26a7d938 2562 return s->cipher_list;
0f113f3e 2563 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2564 return s->ctx->cipher_list;
0f113f3e
MC		 2565 }
2566 }
26a7d938 2567 return NULL;
0f113f3e
MC		 2568}
2569
831eef2c
NM		 2570STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2571{
2572 if ((s == NULL) || (s->session == NULL) || !s->server)
2573 return NULL;
2574 return s->session->ciphers;
2575}
2576
8b8e5bed 2577STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2578{
2579 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2580 int i;
1d0c08b4 2581
0f113f3e
MC		 2582 ciphers = SSL_get_ciphers(s);
2583 if (!ciphers)
2584 return NULL;
1d0c08b4
MC		 2585 if (!ssl_set_client_disabled(s))
2586 return NULL;
0f113f3e
MC		 2587 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2588 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2589 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2590 if (!sk)
2591 sk = sk_SSL_CIPHER_new_null();
2592 if (!sk)
2593 return NULL;
2594 if (!sk_SSL_CIPHER_push(sk, c)) {
2595 sk_SSL_CIPHER_free(sk);
2596 return NULL;
2597 }
2598 }
2599 }
2600 return sk;
2601}
8b8e5bed 2602
4f43d0e7 2603/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2604 * algorithm id */
f73e07cf 2605STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2606{
2607 if (s != NULL) {
2608 if (s->cipher_list_by_id != NULL) {
26a7d938 2609 return s->cipher_list_by_id;
0f113f3e 2610 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2611 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2612 }
2613 }
26a7d938 2614 return NULL;
0f113f3e 2615}
d02b48c6 2616
4f43d0e7 2617/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2618const char *SSL_get_cipher_list(const SSL *s, int n)
2619{
4a640fb6 2620 const SSL_CIPHER *c;
0f113f3e
MC		 2621 STACK_OF(SSL_CIPHER) *sk;
2622
2623 if (s == NULL)
26a7d938 2624 return NULL;
0f113f3e
MC		 2625 sk = SSL_get_ciphers(s);
2626 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2627 return NULL;
0f113f3e
MC		 2628 c = sk_SSL_CIPHER_value(sk, n);
2629 if (c == NULL)
26a7d938
K		 2630 return NULL;
2631 return c->name;
0f113f3e 2632}
d02b48c6 2633
9d5ac953
KY		 2634/** return a STACK of the ciphers available for the SSL_CTX and in order of
2635 * preference */
2636STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2637{
2638 if (ctx != NULL)
2639 return ctx->cipher_list;
2640 return NULL;
2641}
2642
3c83c5ba
SR		 2643/*
2644 * Distinguish between ciphers controlled by set_ciphersuite() and
2645 * set_cipher_list() when counting.
2646 */
2647static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2648{
2649 int i, num = 0;
2650 const SSL_CIPHER *c;
2651
2652 if (sk == NULL)
2653 return 0;
2654 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2655 c = sk_SSL_CIPHER_value(sk, i);
2656 if (c->min_tls >= TLS1_3_VERSION)
2657 continue;
2658 num++;
2659 }
2660 return num;
2661}
2662
25f923dd 2663/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2664int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2665{
2666 STACK_OF(SSL_CIPHER) *sk;
2667
f865b081
MC		 2668 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2669 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2670 ctx->cert);
0f113f3e
MC		 2671 /*
2672 * ssl_create_cipher_list may return an empty stack if it was unable to
2673 * find a cipher matching the given rule string (for example if the rule
2674 * string specifies a cipher which has been disabled). This is not an
2675 * error as far as ssl_create_cipher_list is concerned, and hence
2676 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2677 */
2678 if (sk == NULL)
2679 return 0;
3c83c5ba 2680 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2681 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2682 return 0;
2683 }
2684 return 1;
2685}
d02b48c6 2686
4f43d0e7 2687/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2688int SSL_set_cipher_list(SSL *s, const char *str)
2689{
2690 STACK_OF(SSL_CIPHER) *sk;
2691
f865b081
MC		 2692 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2693 &s->cipher_list, &s->cipher_list_by_id, str,
2694 s->cert);
0f113f3e
MC		 2695 /* see comment in SSL_CTX_set_cipher_list */
2696 if (sk == NULL)
2697 return 0;
3c83c5ba 2698 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2699 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2700 return 0;
2701 }
2702 return 1;
2703}
d02b48c6 2704
a216df59 2705char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 2706{
2707 char *p;
a216df59 2708 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 2709 const SSL_CIPHER *c;
0f113f3e
MC		 2710 int i;
2711
a216df59
MC		 2712 if (!s->server
2713 || s->session == NULL
2714 || s->session->ciphers == NULL
2715 || size < 2)
26a7d938 2716 return NULL;
0f113f3e
MC		 2717
2718 p = buf;
a216df59
MC		 2719 clntsk = s->session->ciphers;
2720 srvrsk = SSL_get_ciphers(s);
2721 if (clntsk == NULL || srvrsk == NULL)
2722 return NULL;
0f113f3e 2723
a216df59 2724 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 2725 return NULL;
2726
a216df59 2727 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 2728 int n;
2729
a216df59
MC		 2730 c = sk_SSL_CIPHER_value(clntsk, i);
2731 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2732 continue;
2733
0f113f3e 2734 n = strlen(c->name);
a216df59 2735 if (n + 1 > size) {
0f113f3e
MC		 2736 if (p != buf)
2737 --p;
2738 *p = '\0';
2739 return buf;
2740 }
4cacc9d5 2741 strcpy(p, c->name);
0f113f3e
MC		 2742 p += n;
2743 *(p++) = ':';
a216df59 2744 size -= n + 1;
0f113f3e
MC		 2745 }
2746 p[-1] = '\0';
26a7d938 2747 return buf;
0f113f3e
MC		 2748}
2749
52b8dad8 2750/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2751 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2752 */
2753
f1fd4544 2754const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2755{
2756 if (type != TLSEXT_NAMETYPE_host_name)
2757 return NULL;
a13c20f6 2758
1c4aa31d 2759 /*
328a0547
BK		 2760 * SNI is not negotiated in pre-TLS-1.3 resumption flows, so fake up an
2761 * SNI value to return if we are resuming/resumed. N.B. that we still
2762 * call the relevant callbacks for such resumption flows, and callbacks
2763 * might error out if there is not a SNI value available.
1c4aa31d 2764 */
328a0547
BK		 2765 if (s->hit)
2766 return s->session->ext.hostname;
2767 return s->ext.hostname;
0f113f3e 2768}
ed3883d2 2769
f1fd4544 2770int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2771{
2772 if (s->session
aff8c126
RS		 2773 && (!s->ext.hostname ? s->session->
2774 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2775 return TLSEXT_NAMETYPE_host_name;
2776 return -1;
2777}
ee2ffc27 2778
0f113f3e
MC		 2779/*
2780 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2781 * expected that this function is called from the callback set by
0f113f3e
MC		 2782 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2783 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2784 * not included in the length. A byte string of length 0 is invalid. No byte
2785 * string may be truncated. The current, but experimental algorithm for
2786 * selecting the protocol is: 1) If the server doesn't support NPN then this
2787 * is indicated to the callback. In this case, the client application has to
2788 * abort the connection or have a default application level protocol. 2) If
2789 * the server supports NPN, but advertises an empty list then the client
f430ba31 2790 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2791 * fallback case was enacted. 3) Otherwise, the client finds the first
2792 * protocol in the server's list that it supports and selects this protocol.
2793 * This is because it's assumed that the server has better information about
2794 * which protocol a client should use. 4) If the client doesn't support any
2795 * of the server's advertised protocols, then this is treated the same as
2796 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2797 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2798 */
0f113f3e
MC		 2799int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2800 const unsigned char *server,
2801 unsigned int server_len,
a230b26e 2802 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2803{
2804 unsigned int i, j;
2805 const unsigned char *result;
2806 int status = OPENSSL_NPN_UNSUPPORTED;
2807
2808 /*
2809 * For each protocol in server preference order, see if we support it.
2810 */
2811 for (i = 0; i < server_len;) {
2812 for (j = 0; j < client_len;) {
2813 if (server[i] == client[j] &&
2814 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2815 /* We found a match */
2816 result = &server[i];
2817 status = OPENSSL_NPN_NEGOTIATED;
2818 goto found;
2819 }
2820 j += client[j];
2821 j++;
2822 }
2823 i += server[i];
2824 i++;
2825 }
2826
2827 /* There's no overlap between our protocols and the server's list. */
2828 result = client;
2829 status = OPENSSL_NPN_NO_OVERLAP;
2830
2831 found:
2832 *out = (unsigned char *)result + 1;
2833 *outlen = result[0];
2834 return status;
2835}
ee2ffc27 2836
e481f9b9 2837#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2838/*
2839 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2840 * client's requested protocol for this connection and returns 0. If the
2841 * client didn't request any protocol, then *data is set to NULL. Note that
2842 * the client can request any protocol it chooses. The value returned from
2843 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2844 * provided by the callback.
2845 */
0f113f3e
MC		 2846void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2847 unsigned *len)
2848{
aff8c126 2849 *data = s->ext.npn;
0f113f3e
MC		 2850 if (!*data) {
2851 *len = 0;
2852 } else {
aff8c126 2853 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2854 }
2855}
2856
2857/*
aff8c126 2858 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2859 * a TLS server needs a list of supported protocols for Next Protocol
2860 * Negotiation. The returned list must be in wire format. The list is
2861 * returned by setting |out| to point to it and |outlen| to its length. This
2862 * memory will not be modified, but one should assume that the SSL* keeps a
2863 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2864 * wishes to advertise. Otherwise, no such extension will be included in the
2865 * ServerHello.
2866 */
aff8c126 2867void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2868 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2869 void *arg)
0f113f3e 2870{
aff8c126
RS		 2871 ctx->ext.npn_advertised_cb = cb;
2872 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2873}
2874
2875/*
2876 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2877 * client needs to select a protocol from the server's provided list. |out|
2878 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2879 * The length of the protocol name must be written into |outlen|. The
2880 * server's advertised protocols are provided in |in| and |inlen|. The
2881 * callback can assume that |in| is syntactically valid. The client must
2882 * select a protocol. It is fatal to the connection if this callback returns
2883 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2884 */
aff8c126 2885void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2886 SSL_CTX_npn_select_cb_func cb,
aff8c126 2887 void *arg)
0f113f3e 2888{
aff8c126
RS		 2889 ctx->ext.npn_select_cb = cb;
2890 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2891}
e481f9b9 2892#endif
a398f821 2893
0f113f3e
MC		 2894/*
2895 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2896 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2897 * length-prefixed strings). Returns 0 on success.
2898 */
2899int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2900 unsigned int protos_len)
0f113f3e 2901{
aff8c126
RS		 2902 OPENSSL_free(ctx->ext.alpn);
2903 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2904 if (ctx->ext.alpn == NULL) {
72e9be3d 2905 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2906 return 1;
72e9be3d 2907 }
aff8c126 2908 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2909
2910 return 0;
2911}
2912
2913/*
2914 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2915 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2916 * length-prefixed strings). Returns 0 on success.
2917 */
2918int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2919 unsigned int protos_len)
0f113f3e 2920{
aff8c126
RS		 2921 OPENSSL_free(ssl->ext.alpn);
2922 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2923 if (ssl->ext.alpn == NULL) {
72e9be3d 2924 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2925 return 1;
72e9be3d 2926 }
aff8c126 2927 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2928
2929 return 0;
2930}
2931
2932/*
2933 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2934 * called during ClientHello processing in order to select an ALPN protocol
2935 * from the client's list of offered protocols.
2936 */
2937void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2938 SSL_CTX_alpn_select_cb_func cb,
2939 void *arg)
0f113f3e 2940{
aff8c126
RS		 2941 ctx->ext.alpn_select_cb = cb;
2942 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2943}
2944
2945/*
69687aa8
F		 2946 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2947 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2948 * (not including the leading length-prefix byte). If the server didn't
2949 * respond with a negotiated protocol then |*len| will be zero.
2950 */
6f017a8f 2951void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2952 unsigned int *len)
0f113f3e 2953{
555cbb32 2954 *data = ssl->s3.alpn_selected;
0f113f3e
MC		 2955 if (*data == NULL)
2956 *len = 0;
2957 else
555cbb32 2958 *len = (unsigned int)ssl->s3.alpn_selected_len;
0f113f3e
MC		 2959}
2960
74b4b494 2961int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2962 const char *label, size_t llen,
23cec1f4 2963 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2964 int use_context)
2965{
c8a18468 2966 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2967 return -1;
e0af0405 2968
0f113f3e 2969 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2970 llen, context,
2971 contextlen, use_context);
0f113f3e 2972}
e0af0405 2973
b38ede80
TT		 2974int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2975 const char *label, size_t llen,
2976 const unsigned char *context,
2977 size_t contextlen)
2978{
2979 if (s->version != TLS1_3_VERSION)
2980 return 0;
2981
2982 return tls13_export_keying_material_early(s, out, olen, label, llen,
2983 context, contextlen);
2984}
2985
3c1d6bbc 2986static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2987{
bd5d27c1 2988 const unsigned char *session_id = a->session_id;
0f113f3e 2989 unsigned long l;
bd5d27c1
DB		 2990 unsigned char tmp_storage[4];
2991
2992 if (a->session_id_length < sizeof(tmp_storage)) {
2993 memset(tmp_storage, 0, sizeof(tmp_storage));
2994 memcpy(tmp_storage, a->session_id, a->session_id_length);
2995 session_id = tmp_storage;
2996 }
0f113f3e
MC		 2997
2998 l = (unsigned long)
bd5d27c1
DB		 2999 ((unsigned long)session_id[0]) |
3000 ((unsigned long)session_id[1] << 8L) |
3001 ((unsigned long)session_id[2] << 16L) |
3002 ((unsigned long)session_id[3] << 24L);
26a7d938 3003 return l;
0f113f3e
MC		 3004}
3005
3006/*
3007 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3008 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3009 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3010 * being able to construct an SSL_SESSION that will collide with any existing
3011 * session with a matching session ID.
3012 */
3013static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3014{
3015 if (a->ssl_version != b->ssl_version)
208fb891 3016 return 1;
0f113f3e 3017 if (a->session_id_length != b->session_id_length)
208fb891 3018 return 1;
26a7d938 3019 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3020}
3021
3022/*
3023 * These wrapper functions should remain rather than redeclaring
d0fa136c 3024 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3025 * variable. The reason is that the functions aren't static, they're exposed
3026 * via ssl.h.
3027 */
97b17195 3028
4ebb342f 3029SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 3030{
3031 SSL_CTX *ret = NULL;
3032
3033 if (meth == NULL) {
3034 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3035 return NULL;
0f113f3e
MC		 3036 }
3037
0fc32b07
MC		 3038 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3039 return NULL;
7fa792d1 3040
0f113f3e
MC		 3041 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3042 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3043 goto err;
3044 }
b51bce94 3045 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3046 if (ret == NULL)
3047 goto err;
3048
0f113f3e 3049 ret->method = meth;
7946ab33
KR		 3050 ret->min_proto_version = 0;
3051 ret->max_proto_version = 0;
693cf80c 3052 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3053 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3054 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3055 /* We take the system default. */
0f113f3e 3056 ret->session_timeout = meth->get_timeout();
0f113f3e 3057 ret->references = 1;
16203f7b
AG		 3058 ret->lock = CRYPTO_THREAD_lock_new();
3059 if (ret->lock == NULL) {
3060 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3061 OPENSSL_free(ret);
3062 return NULL;
3063 }
0f113f3e 3064 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3065 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3066 if ((ret->cert = ssl_cert_new()) == NULL)
3067 goto err;
3068
62d0577e 3069 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3070 if (ret->sessions == NULL)
3071 goto err;
3072 ret->cert_store = X509_STORE_new();
3073 if (ret->cert_store == NULL)
3074 goto err;
ed29e82a
RP		 3075#ifndef OPENSSL_NO_CT
3076 ret->ctlog_store = CTLOG_STORE_new();
3077 if (ret->ctlog_store == NULL)
3078 goto err;
3079#endif
f865b081 3080
fa25763b 3081 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
f865b081
MC		 3082 goto err;
3083
61986d32 3084 if (!ssl_create_cipher_list(ret->method,
f865b081 3085 ret->tls13_ciphersuites,
a230b26e
EK		 3086 &ret->cipher_list, &ret->cipher_list_by_id,
3087 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3088 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 3089 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3090 goto err2;
3091 }
3092
3093 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3094 if (ret->param == NULL)
0f113f3e
MC		 3095 goto err;
3096
3097 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3098 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3099 goto err2;
3100 }
3101 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3102 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3103 goto err2;
3104 }
3105
fa7c2637 3106 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3107 goto err;
3108
98732979
MC		 3109 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3110 goto err;
3111
25a807bc
F		 3112 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3113 goto err;
0f113f3e 3114
4bfb96f2
TS		 3115 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3116 goto err;
3117
0f113f3e
MC		 3118 /* No compression for DTLS */
3119 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3120 ret->comp_methods = SSL_COMP_get_compression_methods();
3121
3122 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3123 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3124
4e2e1ec9 3125 /* Setup RFC5077 ticket keys */
aff8c126
RS		 3126 if ((RAND_bytes(ret->ext.tick_key_name,
3127 sizeof(ret->ext.tick_key_name)) <= 0)
4cffafe9 3128 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
4bfb96f2 3129 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
4cffafe9 3130 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
4bfb96f2 3131 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
0f113f3e 3132 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3133
4cffafe9 3134 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
43054d3d
MC		 3135 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3136 goto err;
3137
edc032b5 3138#ifndef OPENSSL_NO_SRP
61986d32 3139 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 3140 goto err;
edc032b5 3141#endif
4db9677b 3142#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3143# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3144# define eng_strx(x) #x
3145# define eng_str(x) eng_strx(x)
3146 /* Use specific client engine automatically... ignore errors */
3147 {
3148 ENGINE *eng;
3149 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3150 if (!eng) {
3151 ERR_clear_error();
3152 ENGINE_load_builtin_engines();
3153 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3154 }
3155 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3156 ERR_clear_error();
3157 }
3158# endif
3159#endif
3160 /*
3161 * Default is to connect to non-RI servers. When RI is more widely
3162 * deployed might change this.
3163 */
3164 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3165 /*
3166 * Disable compression by default to prevent CRIME. Applications can
3167 * re-enable compression by configuring
3168 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3169 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3170 * middlebox compatibility by default. This may be disabled by default in
3171 * a later OpenSSL version.
dc5744cb 3172 */
a5816a5a 3173 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3174
aff8c126 3175 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3176
bfa9a9af 3177 /*
c39e4048
BK		 3178 * We cannot usefully set a default max_early_data here (which gets
3179 * propagated in SSL_new(), for the following reason: setting the
3180 * SSL field causes tls_construct_stoc_early_data() to tell the
3181 * client that early data will be accepted when constructing a TLS 1.3
3182 * session ticket, and the client will accordingly send us early data
3183 * when using that ticket (if the client has early data to send).
3184 * However, in order for the early data to actually be consumed by
3185 * the application, the application must also have calls to
3186 * SSL_read_early_data(); otherwise we'll just skip past the early data
3187 * and ignore it. So, since the application must add calls to
3188 * SSL_read_early_data(), we also require them to add
3189 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3190 * eliminating the bandwidth-wasting early data in the case described
3191 * above.
bfa9a9af 3192 */
c39e4048 3193 ret->max_early_data = 0;
bfa9a9af 3194
4e8548e8
MC		 3195 /*
3196 * Default recv_max_early_data is a fully loaded single record. Could be
3197 * split across multiple records in practice. We set this differently to
3198 * max_early_data so that, in the default case, we do not advertise any
3199 * support for early_data, but if a client were to send us some (e.g.
3200 * because of an old, stale ticket) then we will tolerate it and skip over
3201 * it.
3202 */
3203 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3204
36ff232c
MC		 3205 /* By default we send two session tickets automatically in TLSv1.3 */
3206 ret->num_tickets = 2;
9d0a8bb7 3207
8a5ed9dc
TM		 3208 ssl_ctx_system_config(ret);
3209
16203f7b 3210 return ret;
0f113f3e
MC		 3211 err:
3212 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3213 err2:
e0e920b1 3214 SSL_CTX_free(ret);
16203f7b 3215 return NULL;
0f113f3e 3216}
d02b48c6 3217
c5ebfcab 3218int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3219{
16203f7b 3220 int i;
c5ebfcab 3221
2f545ae4 3222 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3223 return 0;
3224
3225 REF_PRINT_COUNT("SSL_CTX", ctx);
3226 REF_ASSERT_ISNT(i < 2);
3227 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3228}
3229
4f43d0e7 3230void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3231{
3232 int i;
d02b48c6 3233
0f113f3e
MC		 3234 if (a == NULL)
3235 return;
d02b48c6 3236
2f545ae4 3237 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3238 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3239 if (i > 0)
3240 return;
f3f1cf84 3241 REF_ASSERT_ISNT(i < 0);
0f113f3e 3242
222561fe 3243 X509_VERIFY_PARAM_free(a->param);
919ba009 3244 dane_ctx_final(&a->dane);
0f113f3e
MC		 3245
3246 /*
3247 * Free internal session cache. However: the remove_cb() may reference
3248 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3249 * after the sessions were flushed.
3250 * As the ex_data handling routines might also touch the session cache,
3251 * the most secure solution seems to be: empty (flush) the cache, then
3252 * free ex_data, then finally free the cache.
3253 * (See ticket [openssl.org #212].)
3254 */
3255 if (a->sessions != NULL)
3256 SSL_CTX_flush_sessions(a, 0);
3257
3258 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3259 lh_SSL_SESSION_free(a->sessions);
222561fe 3260 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3261#ifndef OPENSSL_NO_CT
3262 CTLOG_STORE_free(a->ctlog_store);
3263#endif
25aaa98a
RS		 3264 sk_SSL_CIPHER_free(a->cipher_list);
3265 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3266 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3267 ssl_cert_free(a->cert);
fa7c2637 3268 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3269 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
222561fe 3270 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3271 a->comp_methods = NULL;
e783bae2 3272#ifndef OPENSSL_NO_SRTP
25aaa98a 3273 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3274#endif
edc032b5 3275#ifndef OPENSSL_NO_SRP
0f113f3e 3276 SSL_CTX_SRP_CTX_free(a);
edc032b5 3277#endif
bdfe932d 3278#ifndef OPENSSL_NO_ENGINE
7c96dbcd 3279 ENGINE_finish(a->client_cert_engine);
ddac1974 3280#endif
8671b898 3281
e481f9b9 3282#ifndef OPENSSL_NO_EC
aff8c126
RS		 3283 OPENSSL_free(a->ext.ecpointformats);
3284 OPENSSL_free(a->ext.supportedgroups);
8671b898 3285#endif
aff8c126 3286 OPENSSL_free(a->ext.alpn);
4bfb96f2 3287 OPENSSL_secure_free(a->ext.secure);
8671b898 3288
16203f7b
AG		 3289 CRYPTO_THREAD_lock_free(a->lock);
3290
0f113f3e
MC		 3291 OPENSSL_free(a);
3292}
d02b48c6 3293
3ae76679 3294void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3295{
3296 ctx->default_passwd_callback = cb;
3297}
3298
3299void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3300{
3301 ctx->default_passwd_callback_userdata = u;
3302}
3303
0c452abc
CH		 3304pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3305{
3306 return ctx->default_passwd_callback;
3307}
3308
3309void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3310{
3311 return ctx->default_passwd_callback_userdata;
3312}
3313
a974e64a
MC		 3314void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3315{
3316 s->default_passwd_callback = cb;
3317}
3318
3319void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3320{
3321 s->default_passwd_callback_userdata = u;
3322}
3323
0c452abc
CH		 3324pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3325{
3326 return s->default_passwd_callback;
3327}
3328
3329void *SSL_get_default_passwd_cb_userdata(SSL *s)
3330{
3331 return s->default_passwd_callback_userdata;
3332}
3333
0f113f3e
MC		 3334void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3335 int (*cb) (X509_STORE_CTX *, void *),
3336 void *arg)
3337{
3338 ctx->app_verify_callback = cb;
3339 ctx->app_verify_arg = arg;
3340}
3341
3342void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3343 int (*cb) (int, X509_STORE_CTX *))
3344{
3345 ctx->verify_mode = mode;
3346 ctx->default_verify_callback = cb;
3347}
3348
3349void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3350{
3351 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3352}
3353
a230b26e 3354void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3355{
3356 ssl_cert_set_cert_cb(c->cert, cb, arg);
3357}
3358
3359void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3360{
3361 ssl_cert_set_cert_cb(s->cert, cb, arg);
3362}
18d71588 3363
2cf28d61 3364void ssl_set_masks(SSL *s)
0f113f3e 3365{
6383d316 3366 CERT *c = s->cert;
555cbb32 3367 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 3368 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3369 unsigned long mask_k, mask_a;
10bf4fc2 3370#ifndef OPENSSL_NO_EC
361a1191 3371 int have_ecc_cert, ecdsa_ok;
14536c8c 3372#endif
0f113f3e
MC		 3373 if (c == NULL)
3374 return;
d02b48c6 3375
bc36ee62 3376#ifndef OPENSSL_NO_DH
0f113f3e 3377 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3378#else
361a1191 3379 dh_tmp = 0;
d02b48c6
RE		 3380#endif
3381
d0ff28f8 3382 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3383 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3384 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3385#ifndef OPENSSL_NO_EC
6383d316 3386 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3387#endif
0f113f3e
MC		 3388 mask_k = 0;
3389 mask_a = 0;
0e1dba93 3390
77359d22
RL		 3391 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3392 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 3393
2a9b9654 3394#ifndef OPENSSL_NO_GOST
4020c0b3 3395 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3396 mask_k |= SSL_kGOST;
3397 mask_a |= SSL_aGOST12;
3398 }
4020c0b3 3399 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3400 mask_k |= SSL_kGOST;
3401 mask_a |= SSL_aGOST12;
3402 }
4020c0b3 3403 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3404 mask_k |= SSL_kGOST;
3405 mask_a |= SSL_aGOST01;
3406 }
2a9b9654 3407#endif
0f113f3e 3408
361a1191 3409 if (rsa_enc)
0f113f3e 3410 mask_k |= SSL_kRSA;
d02b48c6 3411
0f113f3e
MC		 3412 if (dh_tmp)
3413 mask_k |= SSL_kDHE;
d02b48c6 3414
6aaa29fb
DSH		 3415 /*
3416 * If we only have an RSA-PSS certificate allow RSA authentication
3417 * if TLS 1.2 and peer supports it.
3418 */
3419
3420 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3421 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3422 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3423 mask_a |= SSL_aRSA;
d02b48c6 3424
0f113f3e
MC		 3425 if (dsa_sign) {
3426 mask_a |= SSL_aDSS;
0f113f3e 3427 }
d02b48c6 3428
0f113f3e 3429 mask_a |= SSL_aNULL;
d02b48c6 3430
0f113f3e
MC		 3431 /*
3432 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3433 * depending on the key usage extension.
3434 */
14536c8c 3435#ifndef OPENSSL_NO_EC
0f113f3e 3436 if (have_ecc_cert) {
a8d8e06b 3437 uint32_t ex_kusage;
4020c0b3 3438 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3439 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3440 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3441 ecdsa_ok = 0;
c7c46256 3442 if (ecdsa_ok)
0f113f3e 3443 mask_a |= SSL_aECDSA;
0f113f3e 3444 }
b2021556
DSH		 3445 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3446 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3447 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3448 && TLS1_get_version(s) == TLS1_2_VERSION)
3449 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3450
3451 /* Allow Ed448 for TLS 1.2 if peer supports it */
3452 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3453 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3454 && TLS1_get_version(s) == TLS1_2_VERSION)
3455 mask_a |= SSL_aECDSA;
14536c8c 3456#endif
ea262260 3457
10bf4fc2 3458#ifndef OPENSSL_NO_EC
fe6ef247 3459 mask_k |= SSL_kECDHE;
ea262260 3460#endif
ddac1974
NL		 3461
3462#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3463 mask_k |= SSL_kPSK;
3464 mask_a |= SSL_aPSK;
526f94ad
DSH		 3465 if (mask_k & SSL_kRSA)
3466 mask_k |= SSL_kRSAPSK;
3467 if (mask_k & SSL_kDHE)
3468 mask_k |= SSL_kDHEPSK;
3469 if (mask_k & SSL_kECDHE)
3470 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3471#endif
3472
555cbb32
TS		 3473 s->s3.tmp.mask_k = mask_k;
3474 s->s3.tmp.mask_a = mask_a;
0f113f3e 3475}
d02b48c6 3476
ef236ec3
DSH		 3477#ifndef OPENSSL_NO_EC
3478
a2f9200f 3479int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3480{
555cbb32 3481 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3482 /* key usage, if present, must allow signing */
ce0c1f2b 3483 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3484 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3485 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3486 return 0;
3487 }
3488 }
0f113f3e
MC		 3489 return 1; /* all checks are ok */
3490}
ea262260 3491
ef236ec3
DSH		 3492#endif
3493
a398f821 3494int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3495 size_t *serverinfo_length)
3496{
555cbb32 3497 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 3498 *serverinfo_length = 0;
3499
a497cf25 3500 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3501 return 0;
3502
a497cf25
DSH		 3503 *serverinfo = cpk->serverinfo;
3504 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3505 return 1;
3506}
0f113f3e
MC		 3507
3508void ssl_update_cache(SSL *s, int mode)
3509{
3510 int i;
3511
3512 /*
3513 * If the session_id_length is 0, we are not supposed to cache it, and it
3514 * would be rather hard to do anyway :-)
3515 */
3516 if (s->session->session_id_length == 0)
3517 return;
3518
d316cdcf
BK		 3519 /*
3520 * If sid_ctx_length is 0 there is no specific application context
3521 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 3522 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3523 * indication that this is actually a session for the proper application
3524 * context, and the *handshake* will fail, not just the resumption attempt.
3525 * Do not cache (on the server) these sessions that are not resumable
3526 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 3527 */
c4fa1f7f 3528 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 3529 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3530 return;
3531
0f113f3e 3532 i = s->session_ctx->session_cache_mode;
5d61491c 3533 if ((i & mode) != 0
ee94ec2e
MC		 3534 && (!s->hit || SSL_IS_TLS13(s))) {
3535 /*
3536 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 3537 * normally don't do this because by default it's a full stateless ticket
3538 * with only a dummy session id so there is no reason to cache it,
3539 * unless:
ee94ec2e
MC		 3540 * - we are doing early_data, in which case we cache so that we can
3541 * detect replays
3542 * - the application has set a remove_session_cb so needs to know about
3543 * session timeout events
6cc0b3c2 3544 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 3545 */
3546 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3547 && (!SSL_IS_TLS13(s)
3548 || !s->server
5d263fb7
MC		 3549 || (s->max_early_data > 0
3550 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 3551 || s->session_ctx->remove_session_cb != NULL
3552 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 3553 SSL_CTX_add_session(s->session_ctx, s->session);
3554
3555 /*
3556 * Add the session to the external cache. We do this even in server side
3557 * TLSv1.3 without early data because some applications just want to
3558 * know about the creation of a session and aren't doing a full cache.
3559 */
3560 if (s->session_ctx->new_session_cb != NULL) {
3561 SSL_SESSION_up_ref(s->session);
3562 if (!s->session_ctx->new_session_cb(s, s->session))
3563 SSL_SESSION_free(s->session);
3564 }
0f113f3e
MC		 3565 }
3566
3567 /* auto flush every 255 connections */
3568 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 3569 TSAN_QUALIFIER int *stat;
1fcb4e4d
BK		 3570 if (mode & SSL_SESS_CACHE_CLIENT)
3571 stat = &s->session_ctx->stats.sess_connect_good;
3572 else
3573 stat = &s->session_ctx->stats.sess_accept_good;
9ef9088c 3574 if ((tsan_load(stat) & 0xff) == 0xff)
0f113f3e 3575 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3576 }
3577}
d02b48c6 3578
3499327b 3579const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 3580{
3581 return ctx->method;
3582}
ba168244 3583
3499327b 3584const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 3585{
26a7d938 3586 return s->method;
0f113f3e 3587}
d02b48c6 3588
4ebb342f 3589int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3590{
0f113f3e
MC		 3591 int ret = 1;
3592
3593 if (s->method != meth) {
919ba009 3594 const SSL_METHOD *sm = s->method;
a230b26e 3595 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3596
919ba009 3597 if (sm->version == meth->version)
0f113f3e
MC		 3598 s->method = meth;
3599 else {
919ba009 3600 sm->ssl_free(s);
0f113f3e
MC		 3601 s->method = meth;
3602 ret = s->method->ssl_new(s);
3603 }
3604
919ba009 3605 if (hf == sm->ssl_connect)
0f113f3e 3606 s->handshake_func = meth->ssl_connect;
919ba009 3607 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3608 s->handshake_func = meth->ssl_accept;
3609 }
26a7d938 3610 return ret;
0f113f3e
MC		 3611}
3612
3613int SSL_get_error(const SSL *s, int i)
3614{
3615 int reason;
3616 unsigned long l;
3617 BIO *bio;
3618
3619 if (i > 0)
26a7d938 3620 return SSL_ERROR_NONE;
0f113f3e
MC		 3621
3622 /*
3623 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3624 * where we do encode the error
3625 */
3626 if ((l = ERR_peek_error()) != 0) {
3627 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3628 return SSL_ERROR_SYSCALL;
0f113f3e 3629 else
26a7d938 3630 return SSL_ERROR_SSL;
0f113f3e
MC		 3631 }
3632
8051ab2b
MC		 3633 if (SSL_want_read(s)) {
3634 bio = SSL_get_rbio(s);
3635 if (BIO_should_read(bio))
26a7d938 3636 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3637 else if (BIO_should_write(bio))
3638 /*
3639 * This one doesn't make too much sense ... We never try to write
3640 * to the rbio, and an application program where rbio and wbio
3641 * are separate couldn't even know what it should wait for.
3642 * However if we ever set s->rwstate incorrectly (so that we have
3643 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3644 * wbio *are* the same, this test works around that bug; so it
3645 * might be safer to keep it.
3646 */
26a7d938 3647 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3648 else if (BIO_should_io_special(bio)) {
3649 reason = BIO_get_retry_reason(bio);
3650 if (reason == BIO_RR_CONNECT)
26a7d938 3651 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3652 else if (reason == BIO_RR_ACCEPT)
26a7d938 3653 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3654 else
26a7d938 3655 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3656 }
8051ab2b 3657 }
0f113f3e 3658
8051ab2b 3659 if (SSL_want_write(s)) {
69687aa8 3660 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3661 bio = s->wbio;
3662 if (BIO_should_write(bio))
26a7d938 3663 return SSL_ERROR_WANT_WRITE;
8051ab2b 3664 else if (BIO_should_read(bio))
2e7dc7cd 3665 /*
8051ab2b 3666 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3667 */
26a7d938 3668 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3669 else if (BIO_should_io_special(bio)) {
3670 reason = BIO_get_retry_reason(bio);
3671 if (reason == BIO_RR_CONNECT)
26a7d938 3672 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3673 else if (reason == BIO_RR_ACCEPT)
26a7d938 3674 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3675 else
26a7d938 3676 return SSL_ERROR_SYSCALL;
0f113f3e 3677 }
07bbc92c 3678 }
6b1bb98f 3679 if (SSL_want_x509_lookup(s))
26a7d938 3680 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3681 if (SSL_want_async(s))
8051ab2b 3682 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3683 if (SSL_want_async_job(s))
8051ab2b 3684 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3685 if (SSL_want_client_hello_cb(s))
3686 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3687
3688 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
555cbb32 3689 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3690 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3691
26a7d938 3692 return SSL_ERROR_SYSCALL;
0f113f3e 3693}
d02b48c6 3694
add2f5ca
MC		 3695static int ssl_do_handshake_intern(void *vargs)
3696{
3697 struct ssl_async_args *args;
3698 SSL *s;
3699
3700 args = (struct ssl_async_args *)vargs;
3701 s = args->s;
3702
3703 return s->handshake_func(s);
3704}
3705
4f43d0e7 3706int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3707{
3708 int ret = 1;
3709
3710 if (s->handshake_func == NULL) {
3711 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3712 return -1;
0f113f3e
MC		 3713 }
3714
3eaa4170 3715 ossl_statem_check_finish_init(s, -1);
49e7fe12 3716
c7f47786 3717 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 3718
3719 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3720 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3721 struct ssl_async_args args;
3722
3723 args.s = s;
3724
7fecbf6f 3725 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3726 } else {
3727 ret = s->handshake_func(s);
3728 }
0f113f3e 3729 }
add2f5ca 3730 return ret;
0f113f3e
MC		 3731}
3732
4f43d0e7 3733void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3734{
3735 s->server = 1;
3736 s->shutdown = 0;
fe3a3291 3737 ossl_statem_clear(s);
0f113f3e 3738 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3739 clear_ciphers(s);
0f113f3e 3740}
d02b48c6 3741
4f43d0e7 3742void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3743{
3744 s->server = 0;
3745 s->shutdown = 0;
fe3a3291 3746 ossl_statem_clear(s);
0f113f3e 3747 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3748 clear_ciphers(s);
0f113f3e 3749}
d02b48c6 3750
4f43d0e7 3751int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3752{
3753 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3754 return 0;
0f113f3e 3755}
d02b48c6 3756
41a15c4f 3757int ssl_undefined_void_function(void)
0f113f3e
MC		 3758{
3759 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3760 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3761 return 0;
0f113f3e 3762}
41a15c4f 3763
0821bcd4 3764int ssl_undefined_const_function(const SSL *s)
0f113f3e 3765{
26a7d938 3766 return 0;
0f113f3e 3767}
0821bcd4 3768
2b8fa1d5 3769const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3770{
3771 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3772 return NULL;
0f113f3e 3773}
d02b48c6 3774
3eb2aff4 3775const char *ssl_protocol_to_string(int version)
7d650072 3776{
2abacef1
MC		 3777 switch(version)
3778 {
3779 case TLS1_3_VERSION:
582a17d6 3780 return "TLSv1.3";
2abacef1
MC		 3781
3782 case TLS1_2_VERSION:
7d650072 3783 return "TLSv1.2";
2abacef1
MC		 3784
3785 case TLS1_1_VERSION:
7d650072 3786 return "TLSv1.1";
2abacef1
MC		 3787
3788 case TLS1_VERSION:
ee3a6c64 3789 return "TLSv1";
2abacef1
MC		 3790
3791 case SSL3_VERSION:
7d650072 3792 return "SSLv3";
2abacef1
MC		 3793
3794 case DTLS1_BAD_VER:
7d650072 3795 return "DTLSv0.9";
2abacef1
MC		 3796
3797 case DTLS1_VERSION:
7d650072 3798 return "DTLSv1";
2abacef1
MC		 3799
3800 case DTLS1_2_VERSION:
7d650072 3801 return "DTLSv1.2";
2abacef1
MC		 3802
3803 default:
3804 return "unknown";
3805 }
0f113f3e 3806}
d02b48c6 3807
7d650072
KR		 3808const char *SSL_get_version(const SSL *s)
3809{
3eb2aff4 3810 return ssl_protocol_to_string(s->version);
7d650072
KR		 3811}
3812
98732979 3813static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 3814{
3815 STACK_OF(X509_NAME) *sk;
3816 X509_NAME *xn;
98732979
MC		 3817 int i;
3818
3819 if (src == NULL) {
3820 *dst = NULL;
3821 return 1;
3822 }
3823
3824 if ((sk = sk_X509_NAME_new_null()) == NULL)
3825 return 0;
3826 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3827 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3828 if (xn == NULL) {
3829 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3830 return 0;
3831 }
3832 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3833 X509_NAME_free(xn);
3834 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3835 return 0;
3836 }
3837 }
3838 *dst = sk;
3839
3840 return 1;
3841}
3842
3843SSL *SSL_dup(SSL *s)
3844{
0f113f3e
MC		 3845 SSL *ret;
3846 int i;
3847
919ba009
VD		 3848 /* If we're not quiescent, just up_ref! */
3849 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3850 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3851 return s;
3852 }
3853
3854 /*
3855 * Otherwise, copy configuration state, and session if set.
3856 */
0f113f3e 3857 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3858 return NULL;
0f113f3e 3859
0f113f3e 3860 if (s->session != NULL) {
919ba009
VD		 3861 /*
3862 * Arranges to share the same session via up_ref. This "copies"
3863 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3864 */
61986d32 3865 if (!SSL_copy_session_id(ret, s))
17dd65e6 3866 goto err;
0f113f3e
MC		 3867 } else {
3868 /*
3869 * No session has been established yet, so we have to expect that
3870 * s->cert or ret->cert will be changed later -- they should not both
3871 * point to the same object, and thus we can't use
3872 * SSL_copy_session_id.
3873 */
919ba009
VD		 3874 if (!SSL_set_ssl_method(ret, s->method))
3875 goto err;
0f113f3e
MC		 3876
3877 if (s->cert != NULL) {
e0e920b1 3878 ssl_cert_free(ret->cert);
0f113f3e
MC		 3879 ret->cert = ssl_cert_dup(s->cert);
3880 if (ret->cert == NULL)
3881 goto err;
3882 }
3883
348240c6
MC		 3884 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3885 (int)s->sid_ctx_length))
69f68237 3886 goto err;
0f113f3e
MC		 3887 }
3888
9f6b22b8
VD		 3889 if (!ssl_dane_dup(ret, s))
3890 goto err;
919ba009 3891 ret->version = s->version;
0f113f3e
MC		 3892 ret->options = s->options;
3893 ret->mode = s->mode;
3894 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3895 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3896 ret->msg_callback = s->msg_callback;
3897 ret->msg_callback_arg = s->msg_callback_arg;
3898 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3899 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3900 ret->generate_session_id = s->generate_session_id;
3901
3902 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3903
0f113f3e
MC		 3904 /* copy app data, a little dangerous perhaps */
3905 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3906 goto err;
3907
3908 /* setup rbio, and wbio */
3909 if (s->rbio != NULL) {
3910 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3911 goto err;
3912 }
3913 if (s->wbio != NULL) {
3914 if (s->wbio != s->rbio) {
3915 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3916 goto err;
65e2d672
MC		 3917 } else {
3918 BIO_up_ref(ret->rbio);
0f113f3e 3919 ret->wbio = ret->rbio;
65e2d672 3920 }
0f113f3e 3921 }
919ba009 3922
0f113f3e 3923 ret->server = s->server;
919ba009
VD		 3924 if (s->handshake_func) {
3925 if (s->server)
3926 SSL_set_accept_state(ret);
3927 else
3928 SSL_set_connect_state(ret);
3929 }
0f113f3e 3930 ret->shutdown = s->shutdown;
0f113f3e
MC		 3931 ret->hit = s->hit;
3932
a974e64a
MC		 3933 ret->default_passwd_callback = s->default_passwd_callback;
3934 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3935
0f113f3e
MC		 3936 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3937
3938 /* dup the cipher_list and cipher_list_by_id stacks */
3939 if (s->cipher_list != NULL) {
3940 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3941 goto err;
3942 }
3943 if (s->cipher_list_by_id != NULL)
3944 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3945 == NULL)
3946 goto err;
3947
3948 /* Dup the client_CA list */
98732979
MC		 3949 if (!dup_ca_names(&ret->ca_names, s->ca_names)
3950 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
3951 goto err;
3952
66696478 3953 return ret;
0f113f3e 3954
0f113f3e 3955 err:
66696478
RS		 3956 SSL_free(ret);
3957 return NULL;
0f113f3e 3958}
d02b48c6 3959
4f43d0e7 3960void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3961{
3962 if (s->enc_read_ctx != NULL) {
846ec07d 3963 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3964 s->enc_read_ctx = NULL;
3965 }
3966 if (s->enc_write_ctx != NULL) {
846ec07d 3967 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3968 s->enc_write_ctx = NULL;
3969 }
09b6c2ef 3970#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3971 COMP_CTX_free(s->expand);
3972 s->expand = NULL;
3973 COMP_CTX_free(s->compress);
3974 s->compress = NULL;
0f113f3e
MC		 3975#endif
3976}
d02b48c6 3977
0821bcd4 3978X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3979{
3980 if (s->cert != NULL)
26a7d938 3981 return s->cert->key->x509;
0f113f3e 3982 else
26a7d938 3983 return NULL;
0f113f3e 3984}
d02b48c6 3985
a25f9adc 3986EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3987{
3988 if (s->cert != NULL)
26a7d938 3989 return s->cert->key->privatekey;
0f113f3e 3990 else
26a7d938 3991 return NULL;
0f113f3e 3992}
d02b48c6 3993
a25f9adc 3994X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 3995{
3996 if (ctx->cert != NULL)
3997 return ctx->cert->key->x509;
3998 else
3999 return NULL;
4000}
a25f9adc
DSH		 4001
4002EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4003{
4004 if (ctx->cert != NULL)
4005 return ctx->cert->key->privatekey;
4006 else
4007 return NULL;
4008}
a25f9adc 4009
babb3798 4010const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 4011{
4012 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 4013 return s->session->cipher;
4014 return NULL;
0f113f3e
MC		 4015}
4016
0aed6e44
BK		 4017const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4018{
555cbb32 4019 return s->s3.tmp.new_cipher;
0aed6e44
BK		 4020}
4021
3499327b 4022const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4023{
9a555706
RS		 4024#ifndef OPENSSL_NO_COMP
4025 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4026#else
4027 return NULL;
4028#endif
0f113f3e 4029}
377dcdba 4030
3499327b 4031const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4032{
9a555706
RS		 4033#ifndef OPENSSL_NO_COMP
4034 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4035#else
4036 return NULL;
0f113f3e 4037#endif
9a555706 4038}
0f113f3e 4039
46417569 4040int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 4041{
4042 BIO *bbio;
4043
2e7dc7cd
MC		 4044 if (s->bbio != NULL) {
4045 /* Already buffered. */
4046 return 1;
0f113f3e 4047 }
46417569 4048
2e7dc7cd
MC		 4049 bbio = BIO_new(BIO_f_buffer());
4050 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4051 BIO_free(bbio);
0f113f3e 4052 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 4053 return 0;
0f113f3e 4054 }
2e7dc7cd
MC		 4055 s->bbio = bbio;
4056 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 4057
4058 return 1;
0f113f3e 4059}
413c4f45 4060
b77f3ed1 4061int ssl_free_wbio_buffer(SSL *s)
0f113f3e 4062{
62adbcee 4063 /* callers ensure s is never null */
0f113f3e 4064 if (s->bbio == NULL)
b77f3ed1 4065 return 1;
0f113f3e 4066
2e7dc7cd 4067 s->wbio = BIO_pop(s->wbio);
0f113f3e
MC		 4068 BIO_free(s->bbio);
4069 s->bbio = NULL;
b77f3ed1
MC		 4070
4071 return 1;
0f113f3e
MC		 4072}
4073
4074void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4075{
4076 ctx->quiet_shutdown = mode;
4077}
58964a49 4078
0821bcd4 4079int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4080{
26a7d938 4081 return ctx->quiet_shutdown;
0f113f3e 4082}
58964a49 4083
0f113f3e
MC		 4084void SSL_set_quiet_shutdown(SSL *s, int mode)
4085{
4086 s->quiet_shutdown = mode;
4087}
58964a49 4088
0821bcd4 4089int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4090{
26a7d938 4091 return s->quiet_shutdown;
0f113f3e 4092}
58964a49 4093
0f113f3e
MC		 4094void SSL_set_shutdown(SSL *s, int mode)
4095{
4096 s->shutdown = mode;
4097}
58964a49 4098
0821bcd4 4099int SSL_get_shutdown(const SSL *s)
0f113f3e 4100{
6546e9b2 4101 return s->shutdown;
0f113f3e 4102}
58964a49 4103
0821bcd4 4104int SSL_version(const SSL *s)
0f113f3e 4105{
6546e9b2
AG		 4106 return s->version;
4107}
4108
4109int SSL_client_version(const SSL *s)
4110{
4111 return s->client_version;
0f113f3e 4112}
58964a49 4113
0821bcd4 4114SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4115{
6546e9b2 4116 return ssl->ctx;
0f113f3e
MC		 4117}
4118
4119SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4120{
24a0d393 4121 CERT *new_cert;
0f113f3e
MC		 4122 if (ssl->ctx == ctx)
4123 return ssl->ctx;
0f113f3e 4124 if (ctx == NULL)
222da979 4125 ctx = ssl->session_ctx;
24a0d393
KR		 4126 new_cert = ssl_cert_dup(ctx->cert);
4127 if (new_cert == NULL) {
4128 return NULL;
0f113f3e 4129 }
21181889
MC		 4130
4131 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4132 ssl_cert_free(new_cert);
4133 return NULL;
4134 }
4135
24a0d393
KR		 4136 ssl_cert_free(ssl->cert);
4137 ssl->cert = new_cert;
0f113f3e
MC		 4138
4139 /*
4140 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4141 * so setter APIs must prevent invalid lengths from entering the system.
4142 */
380a522f
MC		 4143 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4144 return NULL;
0f113f3e
MC		 4145
4146 /*
4147 * If the session ID context matches that of the parent SSL_CTX,
4148 * inherit it from the new SSL_CTX as well. If however the context does
4149 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4150 * leave it unchanged.
4151 */
4152 if ((ssl->ctx != NULL) &&
4153 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4154 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4155 ssl->sid_ctx_length = ctx->sid_ctx_length;
4156 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4157 }
4158
16203f7b 4159 SSL_CTX_up_ref(ctx);
a230b26e 4160 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4161 ssl->ctx = ctx;
4162
16203f7b 4163 return ssl->ctx;
0f113f3e 4164}
ed3883d2 4165
4f43d0e7 4166int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4167{
26a7d938 4168 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 4169}
58964a49 4170
d84a7b20
MC		 4171int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4172{
4173 X509_LOOKUP *lookup;
4174
4175 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4176 if (lookup == NULL)
4177 return 0;
4178 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4179
4180 /* Clear any errors if the default directory does not exist */
4181 ERR_clear_error();
4182
4183 return 1;
4184}
4185
4186int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4187{
4188 X509_LOOKUP *lookup;
4189
4190 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4191 if (lookup == NULL)
4192 return 0;
4193
4194 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4195
4196 /* Clear any errors if the default file does not exist */
4197 ERR_clear_error();
4198
4199 return 1;
4200}
4201
303c0028 4202int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4203 const char *CApath)
4204{
26a7d938 4205 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
0f113f3e 4206}
58964a49 4207
45d87a1f 4208void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4209 void (*cb) (const SSL *ssl, int type, int val))
4210{
4211 ssl->info_callback = cb;
4212}
4213
4214/*
4215 * One compiler (Diab DCC) doesn't like argument names in returned function
4216 * pointer.
4217 */
4218void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4219 int /* type */ ,
4220 int /* val */ ) {
4221 return ssl->info_callback;
4222}
58964a49 4223
0f113f3e
MC		 4224void SSL_set_verify_result(SSL *ssl, long arg)
4225{
4226 ssl->verify_result = arg;
4227}
58964a49 4228
0821bcd4 4229long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4230{
26a7d938 4231 return ssl->verify_result;
0f113f3e
MC		 4232}
4233
d9f1c639 4234size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4235{
6b8f5d0d 4236 if (outlen == 0)
555cbb32
TS		 4237 return sizeof(ssl->s3.client_random);
4238 if (outlen > sizeof(ssl->s3.client_random))
4239 outlen = sizeof(ssl->s3.client_random);
4240 memcpy(out, ssl->s3.client_random, outlen);
d9f1c639 4241 return outlen;
858618e7
NM		 4242}
4243
d9f1c639 4244size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4245{
6b8f5d0d 4246 if (outlen == 0)
555cbb32
TS		 4247 return sizeof(ssl->s3.server_random);
4248 if (outlen > sizeof(ssl->s3.server_random))
4249 outlen = sizeof(ssl->s3.server_random);
4250 memcpy(out, ssl->s3.server_random, outlen);
d9f1c639 4251 return outlen;
858618e7
NM		 4252}
4253
d9f1c639 4254size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4255 unsigned char *out, size_t outlen)
858618e7 4256{
d9f1c639
MC		 4257 if (outlen == 0)
4258 return session->master_key_length;
8c1a5343 4259 if (outlen > session->master_key_length)
858618e7
NM		 4260 outlen = session->master_key_length;
4261 memcpy(out, session->master_key, outlen);
d9f1c639 4262 return outlen;
858618e7
NM		 4263}
4264
725b0f1e 4265int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4266 size_t len)
4267{
4268 if (len > sizeof(sess->master_key))
4269 return 0;
4270
4271 memcpy(sess->master_key, in, len);
4272 sess->master_key_length = len;
911d63f2
MC		 4273 return 1;
4274}
4275
4276
0f113f3e
MC		 4277int SSL_set_ex_data(SSL *s, int idx, void *arg)
4278{
26a7d938 4279 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4280}
4281
4282void *SSL_get_ex_data(const SSL *s, int idx)
4283{
26a7d938 4284 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4285}
4286
0f113f3e
MC		 4287int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4288{
26a7d938 4289 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4290}
4291
4292void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4293{
26a7d938 4294 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4295}
58964a49 4296
0821bcd4 4297X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4298{
26a7d938 4299 return ctx->cert_store;
0f113f3e 4300}
413c4f45 4301
0f113f3e
MC		 4302void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4303{
222561fe 4304 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4305 ctx->cert_store = store;
4306}
413c4f45 4307
b50052db
TS		 4308void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4309{
4310 if (store != NULL)
4311 X509_STORE_up_ref(store);
4312 SSL_CTX_set_cert_store(ctx, store);
4313}
4314
0821bcd4 4315int SSL_want(const SSL *s)
0f113f3e 4316{
26a7d938 4317 return s->rwstate;
0f113f3e 4318}
413c4f45 4319
0f113f3e 4320/**
4f43d0e7
BL		 4321 * \brief Set the callback for generating temporary DH keys.
4322 * \param ctx the SSL context.
4323 * \param dh the callback
4324 */
4325
bc36ee62 4326#ifndef OPENSSL_NO_DH
0f113f3e
MC		 4327void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4328 DH *(*dh) (SSL *ssl, int is_export,
4329 int keylength))
4330{
4331 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4332}
f8c3c05d 4333
0f113f3e
MC		 4334void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4335 int keylength))
4336{
4337 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4338}
79df9d62 4339#endif
15d21c2d 4340
ddac1974
NL		 4341#ifndef OPENSSL_NO_PSK
4342int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4343{
4344 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 4345 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4346 return 0;
4347 }
df6da24b 4348 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4349 if (identity_hint != NULL) {
7644a9ae 4350 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4351 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4352 return 0;
4353 } else
df6da24b 4354 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4355 return 1;
4356}
ddac1974
NL		 4357
4358int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4359{
4360 if (s == NULL)
4361 return 0;
4362
0f113f3e
MC		 4363 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4364 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4365 return 0;
4366 }
df6da24b 4367 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4368 if (identity_hint != NULL) {
7644a9ae 4369 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4370 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4371 return 0;
4372 } else
df6da24b 4373 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4374 return 1;
4375}
ddac1974
NL		 4376
4377const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4378{
4379 if (s == NULL || s->session == NULL)
4380 return NULL;
26a7d938 4381 return s->session->psk_identity_hint;
0f113f3e 4382}
ddac1974
NL		 4383
4384const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4385{
4386 if (s == NULL || s->session == NULL)
4387 return NULL;
26a7d938 4388 return s->session->psk_identity;
0f113f3e 4389}
7806f3dd 4390
8cbfcc70 4391void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4392{
4393 s->psk_client_callback = cb;
4394}
7806f3dd 4395
8cbfcc70 4396void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4397{
4398 ctx->psk_client_callback = cb;
4399}
7806f3dd 4400
8cbfcc70 4401void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4402{
4403 s->psk_server_callback = cb;
4404}
7806f3dd 4405
8cbfcc70 4406void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4407{
4408 ctx->psk_server_callback = cb;
4409}
4410#endif
4411
f46184bd
MC		 4412void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4413{
4414 s->psk_find_session_cb = cb;
4415}
4416
4417void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4418 SSL_psk_find_session_cb_func cb)
4419{
4420 ctx->psk_find_session_cb = cb;
4421}
4422
4423void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4424{
4425 s->psk_use_session_cb = cb;
4426}
4427
4428void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4429 SSL_psk_use_session_cb_func cb)
4430{
4431 ctx->psk_use_session_cb = cb;
4432}
4433
0f113f3e
MC		 4434void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4435 void (*cb) (int write_p, int version,
4436 int content_type, const void *buf,
4437 size_t len, SSL *ssl, void *arg))
4438{
4439 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4440}
4441
4442void SSL_set_msg_callback(SSL *ssl,
4443 void (*cb) (int write_p, int version,
4444 int content_type, const void *buf,
4445 size_t len, SSL *ssl, void *arg))
4446{
4447 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4448}
a661b653 4449
7c2d4fee 4450void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4451 int (*cb) (SSL *ssl,
4452 int
4453 is_forward_secure))
4454{
4455 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4456 (void (*)(void))cb);
4457}
4458
7c2d4fee 4459void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4460 int (*cb) (SSL *ssl,
4461 int is_forward_secure))
4462{
4463 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4464 (void (*)(void))cb);
4465}
4466
c649d10d
TS		 4467void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4468 size_t (*cb) (SSL *ssl, int type,
4469 size_t len, void *arg))
4470{
4471 ctx->record_padding_cb = cb;
4472}
4473
4474void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4475{
4476 ctx->record_padding_arg = arg;
4477}
4478
3499327b 4479void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 4480{
4481 return ctx->record_padding_arg;
4482}
4483
4484int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4485{
4486 /* block size of 0 or 1 is basically no padding */
4487 if (block_size == 1)
4488 ctx->block_padding = 0;
4489 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4490 ctx->block_padding = block_size;
4491 else
4492 return 0;
4493 return 1;
4494}
4495
4496void SSL_set_record_padding_callback(SSL *ssl,
4497 size_t (*cb) (SSL *ssl, int type,
4498 size_t len, void *arg))
4499{
4500 ssl->record_padding_cb = cb;
4501}
4502
4503void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4504{
4505 ssl->record_padding_arg = arg;
4506}
4507
3499327b 4508void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d
TS		 4509{
4510 return ssl->record_padding_arg;
4511}
4512
4513int SSL_set_block_padding(SSL *ssl, size_t block_size)
4514{
4515 /* block size of 0 or 1 is basically no padding */
4516 if (block_size == 1)
4517 ssl->block_padding = 0;
4518 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4519 ssl->block_padding = block_size;
4520 else
4521 return 0;
4522 return 1;
4523}
4524
9d0a8bb7
MC		 4525int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4526{
4527 s->num_tickets = num_tickets;
4528
4529 return 1;
4530}
4531
3499327b 4532size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7
MC		 4533{
4534 return s->num_tickets;
4535}
4536
4537int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4538{
4539 ctx->num_tickets = num_tickets;
4540
4541 return 1;
4542}
4543
3499327b 4544size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 4545{
4546 return ctx->num_tickets;
4547}
4548
0f113f3e
MC		 4549/*
4550 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4551 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4552 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4553 * Returns the newly allocated ctx;
8671b898 4554 */
b948e2c5 4555
0f113f3e 4556EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4557{
0f113f3e 4558 ssl_clear_hash_ctx(hash);
bfb0641f 4559 *hash = EVP_MD_CTX_new();
5f3d93e4 4560 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4561 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4562 *hash = NULL;
4563 return NULL;
4564 }
0f113f3e 4565 return *hash;
b948e2c5 4566}
0f113f3e
MC		 4567
4568void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4569{
4570
0d9824c1 4571 EVP_MD_CTX_free(*hash);
0f113f3e 4572 *hash = NULL;
b948e2c5 4573}
a661b653 4574
48fbcbac 4575/* Retrieve handshake hashes */
8c1a5343
MC		 4576int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4577 size_t *hashlen)
48fbcbac 4578{
6e59a892 4579 EVP_MD_CTX *ctx = NULL;
555cbb32 4580 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
8c1a5343
MC		 4581 int hashleni = EVP_MD_CTX_size(hdgst);
4582 int ret = 0;
4583
f63a17d6
MC		 4584 if (hashleni < 0 || (size_t)hashleni > outlen) {
4585 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4586 ERR_R_INTERNAL_ERROR);
28ba2541 4587 goto err;
f63a17d6 4588 }
8c1a5343 4589
bfb0641f 4590 ctx = EVP_MD_CTX_new();
8c1a5343 4591 if (ctx == NULL)
6e59a892 4592 goto err;
8c1a5343 4593
6e59a892 4594 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4595 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4596 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4597 ERR_R_INTERNAL_ERROR);
8c1a5343 4598 goto err;
f63a17d6 4599 }
8c1a5343
MC		 4600
4601 *hashlen = hashleni;
4602
4603 ret = 1;
48fbcbac 4604 err:
bfb0641f 4605 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4606 return ret;
4607}
4608
c04b66b1 4609int SSL_session_reused(const SSL *s)
0f113f3e
MC		 4610{
4611 return s->hit;
4612}
08557cf2 4613
69443116 4614int SSL_is_server(const SSL *s)
0f113f3e
MC		 4615{
4616 return s->server;
4617}
87adf1fa 4618
fcd2d5a6 4619#if !OPENSSL_API_1_1_0
47153c72
RS		 4620void SSL_set_debug(SSL *s, int debug)
4621{
4622 /* Old function was do-nothing anyway... */
4623 (void)s;
4624 (void)debug;
4625}
4626#endif
4627
b362ccab 4628void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4629{
4630 s->cert->sec_level = level;
4631}
b362ccab
DSH		 4632
4633int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4634{
4635 return s->cert->sec_level;
4636}
b362ccab 4637
0f113f3e 4638void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4639 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4640 int op, int bits, int nid,
4641 void *other, void *ex))
0f113f3e
MC		 4642{
4643 s->cert->sec_cb = cb;
4644}
b362ccab 4645
a230b26e
EK		 4646int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4647 const SSL_CTX *ctx, int op,
4648 int bits, int nid, void *other,
4649 void *ex) {
0f113f3e
MC		 4650 return s->cert->sec_cb;
4651}
b362ccab
DSH		 4652
4653void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4654{
4655 s->cert->sec_ex = ex;
4656}
b362ccab
DSH		 4657
4658void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4659{
4660 return s->cert->sec_ex;
4661}
b362ccab
DSH		 4662
4663void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4664{
4665 ctx->cert->sec_level = level;
4666}
b362ccab
DSH		 4667
4668int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4669{
4670 return ctx->cert->sec_level;
4671}
b362ccab 4672
0f113f3e 4673void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4674 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4675 int op, int bits, int nid,
4676 void *other, void *ex))
0f113f3e
MC		 4677{
4678 ctx->cert->sec_cb = cb;
4679}
b362ccab 4680
e4646a89
KR		 4681int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4682 const SSL_CTX *ctx,
0f113f3e
MC		 4683 int op, int bits,
4684 int nid,
4685 void *other,
4686 void *ex) {
4687 return ctx->cert->sec_cb;
4688}
b362ccab
DSH		 4689
4690void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4691{
4692 ctx->cert->sec_ex = ex;
4693}
b362ccab
DSH		 4694
4695void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4696{
4697 return ctx->cert->sec_ex;
4698}
b362ccab 4699
8106cb8b
VD		 4700/*
4701 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4702 * can return unsigned long, instead of the generic long return value from the
4703 * control interface.
4704 */
4705unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4706{
4707 return ctx->options;
4708}
a230b26e
EK		 4709
4710unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4711{
4712 return s->options;
4713}
a230b26e 4714
8106cb8b
VD		 4715unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4716{
4717 return ctx->options |= op;
4718}
a230b26e 4719
8106cb8b
VD		 4720unsigned long SSL_set_options(SSL *s, unsigned long op)
4721{
4722 return s->options |= op;
4723}
a230b26e 4724
8106cb8b
VD		 4725unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4726{
4727 return ctx->options &= ~op;
4728}
a230b26e 4729
8106cb8b
VD		 4730unsigned long SSL_clear_options(SSL *s, unsigned long op)
4731{
4732 return s->options &= ~op;
4733}
4734
696178ed
DSH		 4735STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4736{
4737 return s->verified_chain;
4738}
4739
0f113f3e 4740IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4741
4742#ifndef OPENSSL_NO_CT
4743
4744/*
4745 * Moves SCTs from the |src| stack to the |dst| stack.
4746 * The source of each SCT will be set to |origin|.
4747 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4748 * the caller.
4749 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4750 */
a230b26e
EK		 4751static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4752 sct_source_t origin)
ed29e82a
RP		 4753{
4754 int scts_moved = 0;
4755 SCT *sct = NULL;
4756
4757 if (*dst == NULL) {
4758 *dst = sk_SCT_new_null();
4759 if (*dst == NULL) {
4760 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4761 goto err;
4762 }
4763 }
4764
4765 while ((sct = sk_SCT_pop(src)) != NULL) {
4766 if (SCT_set_source(sct, origin) != 1)
4767 goto err;
4768
4769 if (sk_SCT_push(*dst, sct) <= 0)
4770 goto err;
4771 scts_moved += 1;
4772 }
4773
4774 return scts_moved;
a230b26e 4775 err:
ed29e82a 4776 if (sct != NULL)
a230b26e 4777 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4778 return -1;
ed29e82a
RP		 4779}
4780
4781/*
a230b26e 4782 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4783 * Returns the number of SCTs extracted.
a230b26e 4784 */
ed29e82a
RP		 4785static int ct_extract_tls_extension_scts(SSL *s)
4786{
4787 int scts_extracted = 0;
4788
aff8c126
RS		 4789 if (s->ext.scts != NULL) {
4790 const unsigned char *p = s->ext.scts;
4791 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4792
4793 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4794
4795 SCT_LIST_free(scts);
4796 }
4797
4798 return scts_extracted;
4799}
4800
4801/*
4802 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4803 * contains an SCT X509 extension. They will be stored in |s->scts|.
4804 * Returns:
4805 * - The number of SCTs extracted, assuming an OCSP response exists.
4806 * - 0 if no OCSP response exists or it contains no SCTs.
4807 * - A negative integer if an error occurs.
4808 */
4809static int ct_extract_ocsp_response_scts(SSL *s)
4810{
a230b26e 4811# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4812 int scts_extracted = 0;
4813 const unsigned char *p;
4814 OCSP_BASICRESP *br = NULL;
4815 OCSP_RESPONSE *rsp = NULL;
4816 STACK_OF(SCT) *scts = NULL;
4817 int i;
4818
aff8c126 4819 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4820 goto err;
4821
aff8c126
RS		 4822 p = s->ext.ocsp.resp;
4823 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4824 if (rsp == NULL)
4825 goto err;
4826
4827 br = OCSP_response_get1_basic(rsp);
4828 if (br == NULL)
4829 goto err;
4830
4831 for (i = 0; i < OCSP_resp_count(br); ++i) {
4832 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4833
4834 if (single == NULL)
4835 continue;
4836
a230b26e
EK		 4837 scts =
4838 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4839 scts_extracted =
4840 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4841 if (scts_extracted < 0)
4842 goto err;
4843 }
a230b26e 4844 err:
ed29e82a
RP		 4845 SCT_LIST_free(scts);
4846 OCSP_BASICRESP_free(br);
4847 OCSP_RESPONSE_free(rsp);
4848 return scts_extracted;
a230b26e 4849# else
3e41ac35
MC		 4850 /* Behave as if no OCSP response exists */
4851 return 0;
a230b26e 4852# endif
ed29e82a
RP		 4853}
4854
4855/*
4856 * Attempts to extract SCTs from the peer certificate.
4857 * Return the number of SCTs extracted, or a negative integer if an error
4858 * occurs.
4859 */
4860static int ct_extract_x509v3_extension_scts(SSL *s)
4861{
4862 int scts_extracted = 0;
3f3c7d26 4863 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4864
4865 if (cert != NULL) {
4866 STACK_OF(SCT) *scts =
4867 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4868
4869 scts_extracted =
4870 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4871
4872 SCT_LIST_free(scts);
4873 }
4874
4875 return scts_extracted;
4876}
4877
4878/*
4879 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4880 * response (if it exists) and X509v3 extensions in the certificate.
4881 * Returns NULL if an error occurs.
4882 */
4883const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4884{
4885 if (!s->scts_parsed) {
4886 if (ct_extract_tls_extension_scts(s) < 0 ||
4887 ct_extract_ocsp_response_scts(s) < 0 ||
4888 ct_extract_x509v3_extension_scts(s) < 0)
4889 goto err;
4890
4891 s->scts_parsed = 1;
4892 }
4893 return s->scts;
a230b26e 4894 err:
ed29e82a
RP		 4895 return NULL;
4896}
4897
a230b26e 4898static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4899 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4900{
43341433
VD		 4901 return 1;
4902}
4903
a230b26e 4904static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4905 const STACK_OF(SCT) *scts, void *unused_arg)
4906{
4907 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4908 int i;
ed29e82a 4909
43341433
VD		 4910 for (i = 0; i < count; ++i) {
4911 SCT *sct = sk_SCT_value(scts, i);
4912 int status = SCT_get_validation_status(sct);
4913
4914 if (status == SCT_VALIDATION_STATUS_VALID)
4915 return 1;
4916 }
4917 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4918 return 0;
4919}
4920
4921int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4922 void *arg)
4923{
ed29e82a
RP		 4924 /*
4925 * Since code exists that uses the custom extension handler for CT, look
4926 * for this and throw an error if they have already registered to use CT.
4927 */
4928 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4929 TLSEXT_TYPE_signed_certificate_timestamp))
4930 {
ed29e82a
RP		 4931 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4932 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4933 return 0;
ed29e82a
RP		 4934 }
4935
ed29e82a 4936 if (callback != NULL) {
a230b26e
EK		 4937 /*
4938 * If we are validating CT, then we MUST accept SCTs served via OCSP
4939 */
ed29e82a 4940 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4941 return 0;
ed29e82a
RP		 4942 }
4943
43341433
VD		 4944 s->ct_validation_callback = callback;
4945 s->ct_validation_callback_arg = arg;
4946
4947 return 1;
ed29e82a
RP		 4948}
4949
43341433 4950int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 4951 ssl_ct_validation_cb callback, void *arg)
ed29e82a 4952{
ed29e82a
RP		 4953 /*
4954 * Since code exists that uses the custom extension handler for CT, look for
4955 * this and throw an error if they have already registered to use CT.
4956 */
4957 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 4958 TLSEXT_TYPE_signed_certificate_timestamp))
4959 {
ed29e82a
RP		 4960 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4961 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4962 return 0;
ed29e82a
RP		 4963 }
4964
4965 ctx->ct_validation_callback = callback;
4966 ctx->ct_validation_callback_arg = arg;
43341433 4967 return 1;
ed29e82a
RP		 4968}
4969
43341433 4970int SSL_ct_is_enabled(const SSL *s)
ed29e82a 4971{
43341433 4972 return s->ct_validation_callback != NULL;
ed29e82a
RP		 4973}
4974
43341433 4975int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 4976{
43341433 4977 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 4978}
4979
4d482ee2 4980int ssl_validate_ct(SSL *s)
ed29e82a
RP		 4981{
4982 int ret = 0;
3f3c7d26 4983 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 4984 X509 *issuer;
b9aec69a 4985 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 4986 CT_POLICY_EVAL_CTX *ctx = NULL;
4987 const STACK_OF(SCT) *scts;
4988
43341433
VD		 4989 /*
4990 * If no callback is set, the peer is anonymous, or its chain is invalid,
4991 * skip SCT validation - just return success. Applications that continue
4992 * handshakes without certificates, with unverified chains, or pinned leaf
4993 * certificates are outside the scope of the WebPKI and CT.
4994 *
4995 * The above exclusions notwithstanding the vast majority of peers will
4996 * have rather ordinary certificate chains validated by typical
4997 * applications that perform certificate verification and therefore will
4998 * process SCTs when enabled.
4999 */
5000 if (s->ct_validation_callback == NULL || cert == NULL ||
5001 s->verify_result != X509_V_OK ||
a230b26e 5002 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 5003 return 1;
5004
43341433
VD		 5005 /*
5006 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5007 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5008 */
5009 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5010 switch (dane->mtlsa->usage) {
5011 case DANETLS_USAGE_DANE_TA:
5012 case DANETLS_USAGE_DANE_EE:
5013 return 1;
5014 }
ed29e82a
RP		 5015 }
5016
ed29e82a
RP		 5017 ctx = CT_POLICY_EVAL_CTX_new();
5018 if (ctx == NULL) {
f63a17d6
MC		 5019 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5020 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 5021 goto end;
5022 }
5023
43341433 5024 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 5025 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5026 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5027 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 5028 CT_POLICY_EVAL_CTX_set_time(
5029 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 5030
5031 scts = SSL_get0_peer_scts(s);
5032
43341433
VD		 5033 /*
5034 * This function returns success (> 0) only when all the SCTs are valid, 0
5035 * when some are invalid, and < 0 on various internal errors (out of
5036 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5037 * reason to abort the handshake, that decision is up to the callback.
5038 * Therefore, we error out only in the unexpected case that the return
5039 * value is negative.
5040 *
5041 * XXX: One might well argue that the return value of this function is an
f430ba31 5042 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 5043 * status of each of the provided SCTs. So long as it correctly separates
5044 * the wheat from the chaff it should return success. Failure in this case
5045 * ought to correspond to an inability to carry out its duties.
5046 */
5047 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 5048 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5049 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 5050 goto end;
5051 }
5052
5053 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5054 if (ret < 0)
a230b26e 5055 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 5056 if (!ret)
5057 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5058 SSL_R_CALLBACK_FAILED);
ed29e82a 5059
a230b26e 5060 end:
ed29e82a 5061 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 5062 /*
5063 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5064 * failure return code here. Also the application may wish the complete
5065 * the handshake, and then disconnect cleanly at a higher layer, after
5066 * checking the verification status of the completed connection.
5067 *
5068 * We therefore force a certificate verification failure which will be
5069 * visible via SSL_get_verify_result() and cached as part of any resumed
5070 * session.
5071 *
5072 * Note: the permissive callback is for information gathering only, always
5073 * returns success, and does not affect verification status. Only the
5074 * strict callback or a custom application-specified callback can trigger
5075 * connection failure or record a verification error.
5076 */
5077 if (ret <= 0)
5078 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 5079 return ret;
5080}
5081
43341433
VD		 5082int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5083{
5084 switch (validation_mode) {
5085 default:
5086 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5087 return 0;
5088 case SSL_CT_VALIDATION_PERMISSIVE:
5089 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5090 case SSL_CT_VALIDATION_STRICT:
5091 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5092 }
5093}
5094
5095int SSL_enable_ct(SSL *s, int validation_mode)
5096{
5097 switch (validation_mode) {
5098 default:
5099 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5100 return 0;
5101 case SSL_CT_VALIDATION_PERMISSIVE:
5102 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5103 case SSL_CT_VALIDATION_STRICT:
5104 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5105 }
5106}
5107
ed29e82a
RP		 5108int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5109{
328f36c5 5110 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 5111}
5112
5113int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5114{
5115 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5116}
5117
a230b26e 5118void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 5119{
5120 CTLOG_STORE_free(ctx->ctlog_store);
5121 ctx->ctlog_store = logs;
5122}
5123
5124const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5125{
5126 return ctx->ctlog_store;
5127}
5128
6b1bb98f
BK		 5129#endif /* OPENSSL_NO_CT */
5130
a9c0d8be
DB		 5131void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5132 void *arg)
6b1bb98f 5133{
a9c0d8be
DB		 5134 c->client_hello_cb = cb;
5135 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 5136}
5137
a9c0d8be 5138int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 5139{
5140 if (s->clienthello == NULL)
5141 return 0;
5142 return s->clienthello->isv2;
5143}
5144
a9c0d8be 5145unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 5146{
5147 if (s->clienthello == NULL)
5148 return 0;
5149 return s->clienthello->legacy_version;
5150}
5151
a9c0d8be 5152size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5153{
5154 if (s->clienthello == NULL)
5155 return 0;
5156 if (out != NULL)
5157 *out = s->clienthello->random;
5158 return SSL3_RANDOM_SIZE;
5159}
5160
a9c0d8be 5161size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5162{
5163 if (s->clienthello == NULL)
5164 return 0;
5165 if (out != NULL)
5166 *out = s->clienthello->session_id;
5167 return s->clienthello->session_id_len;
5168}
5169
a9c0d8be 5170size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5171{
5172 if (s->clienthello == NULL)
5173 return 0;
5174 if (out != NULL)
5175 *out = PACKET_data(&s->clienthello->ciphersuites);
5176 return PACKET_remaining(&s->clienthello->ciphersuites);
5177}
5178
a9c0d8be 5179size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5180{
5181 if (s->clienthello == NULL)
5182 return 0;
5183 if (out != NULL)
5184 *out = s->clienthello->compressions;
5185 return s->clienthello->compressions_len;
5186}
5187
a9c0d8be 5188int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5189{
5190 RAW_EXTENSION *ext;
5191 int *present;
5192 size_t num = 0, i;
5193
5194 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5195 return 0;
5196 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5197 ext = s->clienthello->pre_proc_exts + i;
5198 if (ext->present)
5199 num++;
5200 }
6fda11ae 5201 if (num == 0) {
5202 *out = NULL;
5203 *outlen = 0;
5204 return 1;
5205 }
cdb10bae
RS		 5206 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5207 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5208 ERR_R_MALLOC_FAILURE);
193b5d76 5209 return 0;
cdb10bae 5210 }
193b5d76
BK		 5211 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5212 ext = s->clienthello->pre_proc_exts + i;
5213 if (ext->present) {
5214 if (ext->received_order >= num)
5215 goto err;
5216 present[ext->received_order] = ext->type;
5217 }
5218 }
5219 *out = present;
5220 *outlen = num;
5221 return 1;
5222 err:
5223 OPENSSL_free(present);
5224 return 0;
5225}
5226
a9c0d8be 5227int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5228 size_t *outlen)
5229{
5230 size_t i;
5231 RAW_EXTENSION *r;
5232
5233 if (s->clienthello == NULL)
5234 return 0;
5235 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5236 r = s->clienthello->pre_proc_exts + i;
5237 if (r->present && r->type == type) {
5238 if (out != NULL)
5239 *out = PACKET_data(&r->data);
5240 if (outlen != NULL)
5241 *outlen = PACKET_remaining(&r->data);
5242 return 1;
5243 }
5244 }
5245 return 0;
5246}
2faa1b48 5247
a58eb06d
TS		 5248int SSL_free_buffers(SSL *ssl)
5249{
5250 RECORD_LAYER *rl = &ssl->rlayer;
5251
5252 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5253 return 0;
5254
5255 RECORD_LAYER_release(rl);
5256 return 1;
5257}
5258
5259int SSL_alloc_buffers(SSL *ssl)
5260{
5261 return ssl3_setup_buffers(ssl);
5262}
5263
2faa1b48
CB		 5264void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5265{
5266 ctx->keylog_callback = cb;
5267}
5268
5269SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5270{
5271 return ctx->keylog_callback;
5272}
5273
5274static int nss_keylog_int(const char *prefix,
5275 SSL *ssl,
5276 const uint8_t *parameter_1,
5277 size_t parameter_1_len,
5278 const uint8_t *parameter_2,
5279 size_t parameter_2_len)
5280{
5281 char *out = NULL;
5282 char *cursor = NULL;
5283 size_t out_len = 0;
5284 size_t i;
5285 size_t prefix_len;
5286
20870286
P		 5287 if (ssl->ctx->keylog_callback == NULL)
5288 return 1;
2faa1b48
CB		 5289
5290 /*
5291 * Our output buffer will contain the following strings, rendered with
5292 * space characters in between, terminated by a NULL character: first the
5293 * prefix, then the first parameter, then the second parameter. The
5294 * meaning of each parameter depends on the specific key material being
5295 * logged. Note that the first and second parameters are encoded in
5296 * hexadecimal, so we need a buffer that is twice their lengths.
5297 */
5298 prefix_len = strlen(prefix);
e931f370 5299 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
2faa1b48 5300 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 5301 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5302 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5303 return 0;
5304 }
5305
5306 strcpy(cursor, prefix);
5307 cursor += prefix_len;
5308 *cursor++ = ' ';
5309
5310 for (i = 0; i < parameter_1_len; i++) {
5311 sprintf(cursor, "%02x", parameter_1[i]);
5312 cursor += 2;
5313 }
5314 *cursor++ = ' ';
5315
5316 for (i = 0; i < parameter_2_len; i++) {
5317 sprintf(cursor, "%02x", parameter_2[i]);
5318 cursor += 2;
5319 }
5320 *cursor = '\0';
5321
5322 ssl->ctx->keylog_callback(ssl, (const char *)out);
e931f370 5323 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 5324 return 1;
5325
5326}
5327
5328int ssl_log_rsa_client_key_exchange(SSL *ssl,
5329 const uint8_t *encrypted_premaster,
5330 size_t encrypted_premaster_len,
5331 const uint8_t *premaster,
5332 size_t premaster_len)
5333{
5334 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 5335 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5336 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5337 return 0;
5338 }
5339
f0deb4d3 5340 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5341 return nss_keylog_int("RSA",
5342 ssl,
5343 encrypted_premaster,
f0deb4d3 5344 8,
2faa1b48
CB		 5345 premaster,
5346 premaster_len);
5347}
5348
2c7bd692
CB		 5349int ssl_log_secret(SSL *ssl,
5350 const char *label,
5351 const uint8_t *secret,
5352 size_t secret_len)
2faa1b48 5353{
2c7bd692 5354 return nss_keylog_int(label,
2faa1b48 5355 ssl,
555cbb32 5356 ssl->s3.client_random,
2c7bd692
CB		 5357 SSL3_RANDOM_SIZE,
5358 secret,
5359 secret_len);
2faa1b48
CB		 5360}
5361
ccb8e6e0
BK		 5362#define SSLV2_CIPHER_LEN 3
5363
f63a17d6 5364int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5365{
ccb8e6e0 5366 int n;
ccb8e6e0
BK		 5367
5368 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5369
5370 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5371 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5372 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5373 return 0;
ccb8e6e0
BK		 5374 }
5375
5376 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5377 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 5378 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5379 return 0;
ccb8e6e0
BK		 5380 }
5381
555cbb32
TS		 5382 OPENSSL_free(s->s3.tmp.ciphers_raw);
5383 s->s3.tmp.ciphers_raw = NULL;
5384 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5385
5386 if (sslv2format) {
5387 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5388 PACKET sslv2ciphers = *cipher_suites;
5389 unsigned int leadbyte;
5390 unsigned char *raw;
5391
5392 /*
5393 * We store the raw ciphers list in SSLv3+ format so we need to do some
5394 * preprocessing to convert the list first. If there are any SSLv2 only
5395 * ciphersuites with a non-zero leading byte then we are going to
5396 * slightly over allocate because we won't store those. But that isn't a
5397 * problem.
5398 */
5399 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 5400 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 5401 if (raw == NULL) {
f63a17d6
MC		 5402 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5403 ERR_R_MALLOC_FAILURE);
5404 return 0;
ccb8e6e0 5405 }
555cbb32 5406 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5407 PACKET_remaining(&sslv2ciphers) > 0;
5408 raw += TLS_CIPHER_LEN) {
5409 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5410 || (leadbyte == 0
5411 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5412 TLS_CIPHER_LEN))
5413 || (leadbyte != 0
5414 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5415 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5416 SSL_R_BAD_PACKET);
555cbb32
TS		 5417 OPENSSL_free(s->s3.tmp.ciphers_raw);
5418 s->s3.tmp.ciphers_raw = NULL;
5419 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 5420 return 0;
ccb8e6e0
BK		 5421 }
5422 if (leadbyte == 0)
555cbb32 5423 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 5424 }
555cbb32
TS		 5425 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5426 &s->s3.tmp.ciphers_rawlen)) {
f63a17d6
MC		 5427 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5428 ERR_R_INTERNAL_ERROR);
5429 return 0;
ccb8e6e0 5430 }
90134d98 5431 return 1;
90134d98
BK		 5432}
5433
5434int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5435 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5436 STACK_OF(SSL_CIPHER) **scsvs)
5437{
90134d98
BK		 5438 PACKET pkt;
5439
5440 if (!PACKET_buf_init(&pkt, bytes, len))
5441 return 0;
f63a17d6 5442 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5443}
5444
5445int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5446 STACK_OF(SSL_CIPHER) **skp,
5447 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5448 int sslv2format, int fatal)
90134d98
BK		 5449{
5450 const SSL_CIPHER *c;
5451 STACK_OF(SSL_CIPHER) *sk = NULL;
5452 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5453 int n;
5454 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5455 unsigned char cipher[SSLV2_CIPHER_LEN];
5456
5457 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5458
5459 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5460 if (fatal)
5461 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5462 SSL_R_NO_CIPHERS_SPECIFIED);
5463 else
5464 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5465 return 0;
5466 }
5467
5468 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5469 if (fatal)
5470 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5471 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5472 else
5473 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5474 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5475 return 0;
5476 }
5477
5478 sk = sk_SSL_CIPHER_new_null();
5479 scsvs = sk_SSL_CIPHER_new_null();
5480 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5481 if (fatal)
5482 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5483 ERR_R_MALLOC_FAILURE);
5484 else
5485 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5486 goto err;
5487 }
ccb8e6e0
BK		 5488
5489 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5490 /*
5491 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5492 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5493 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5494 */
5495 if (sslv2format && cipher[0] != '\0')
5496 continue;
5497
ccb8e6e0
BK		 5498 /* For SSLv2-compat, ignore leading 0-byte. */
5499 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5500 if (c != NULL) {
90134d98
BK		 5501 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5502 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5503 if (fatal)
5504 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5505 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5506 else
5507 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5508 goto err;
5509 }
5510 }
5511 }
5512 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5513 if (fatal)
5514 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5515 SSL_R_BAD_LENGTH);
5516 else
5517 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5518 goto err;
5519 }
5520
90134d98
BK		 5521 if (skp != NULL)
5522 *skp = sk;
5523 else
5524 sk_SSL_CIPHER_free(sk);
5525 if (scsvs_out != NULL)
5526 *scsvs_out = scsvs;
5527 else
5528 sk_SSL_CIPHER_free(scsvs);
5529 return 1;
ccb8e6e0
BK		 5530 err:
5531 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5532 sk_SSL_CIPHER_free(scsvs);
5533 return 0;
ccb8e6e0 5534}
3fc8d856
MC		 5535
5536int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5537{
5538 ctx->max_early_data = max_early_data;
5539
5540 return 1;
5541}
5542
46dcb945 5543uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5544{
5545 return ctx->max_early_data;
5546}
5547
5548int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5549{
5550 s->max_early_data = max_early_data;
5551
5552 return 1;
5553}
5554
a8e75d56 5555uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5556{
5557 return s->max_early_data;
5558}
ae3947de 5559
4e8548e8
MC		 5560int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5561{
5562 ctx->recv_max_early_data = recv_max_early_data;
5563
5564 return 1;
5565}
5566
5567uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5568{
5569 return ctx->recv_max_early_data;
5570}
5571
5572int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5573{
5574 s->recv_max_early_data = recv_max_early_data;
5575
5576 return 1;
5577}
5578
5579uint32_t SSL_get_recv_max_early_data(const SSL *s)
5580{
5581 return s->recv_max_early_data;
5582}
5583
cf72c757
F		 5584__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5585{
5586 /* Return any active Max Fragment Len extension */
5587 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5588 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5589
5590 /* return current SSL connection setting */
5591 return ssl->max_send_fragment;
5592}
5593
5594__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5595{
5596 /* Return a value regarding an active Max Fragment Len extension */
5597 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5598 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5599 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5600
5601 /* else limit |split_send_fragment| to current |max_send_fragment| */
5602 if (ssl->split_send_fragment > ssl->max_send_fragment)
5603 return ssl->max_send_fragment;
5604
5605 /* return current SSL connection setting */
5606 return ssl->split_send_fragment;
5607}
042c5753
MC		 5608
5609int SSL_stateless(SSL *s)
5610{
5611 int ret;
5612
5613 /* Ensure there is no state left over from a previous invocation */
5614 if (!SSL_clear(s))
d6bb50a5 5615 return 0;
042c5753
MC		 5616
5617 ERR_clear_error();
5618
555cbb32 5619 s->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 5620 ret = SSL_accept(s);
555cbb32 5621 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 5622
d6bb50a5 5623 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5624 return 1;
5625
e440f513
MC		 5626 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5627 return 0;
5628
5629 return -1;
042c5753 5630}
9d75dce3 5631
e97be718
MC		 5632void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5633{
5634 ctx->pha_enabled = val;
5635}
5636
32097b33 5637void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 5638{
32097b33 5639 ssl->pha_enabled = val;
9d75dce3
TS		 5640}
5641
5642int SSL_verify_client_post_handshake(SSL *ssl)
5643{
5644 if (!SSL_IS_TLS13(ssl)) {
5645 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5646 return 0;
5647 }
5648 if (!ssl->server) {
5649 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5650 return 0;
5651 }
5652
5653 if (!SSL_is_init_finished(ssl)) {
5654 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5655 return 0;
5656 }
5657
5658 switch (ssl->post_handshake_auth) {
5659 case SSL_PHA_NONE:
5660 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5661 return 0;
5662 default:
5663 case SSL_PHA_EXT_SENT:
5664 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5665 return 0;
5666 case SSL_PHA_EXT_RECEIVED:
5667 break;
5668 case SSL_PHA_REQUEST_PENDING:
5669 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5670 return 0;
5671 case SSL_PHA_REQUESTED:
5672 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5673 return 0;
5674 }
5675
5676 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5677
5678 /* checks verify_mode and algorithm_auth */
5679 if (!send_certificate_request(ssl)) {
5680 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5681 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5682 return 0;
5683 }
5684
5685 ossl_statem_set_in_init(ssl, 1);
5686 return 1;
5687}
df0fed9a
TS		 5688
5689int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5690 SSL_CTX_generate_session_ticket_fn gen_cb,
5691 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5692 void *arg)
5693{
5694 ctx->generate_ticket_cb = gen_cb;
5695 ctx->decrypt_ticket_cb = dec_cb;
5696 ctx->ticket_cb_data = arg;
5697 return 1;
5698}
c9598459
MC		 5699
5700void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5701 SSL_allow_early_data_cb_fn cb,
5702 void *arg)
5703{
5704 ctx->allow_early_data_cb = cb;
5705 ctx->allow_early_data_cb_data = arg;
5706}
5707
5708void SSL_set_allow_early_data_cb(SSL *s,
5709 SSL_allow_early_data_cb_fn cb,
5710 void *arg)
5711{
5712 s->allow_early_data_cb = cb;
5713 s->allow_early_data_cb_data = arg;
5714}
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