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Update source files for deprecation at 3.0
[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>
706457b7 13#include "ssl_local.h"
7c3a7561 14#include "e_os.h"
ec577822 15#include <openssl/objects.h>
bb7cd4e3 16#include <openssl/x509v3.h>
6434abbf 17#include <openssl/rand.h>
6decf943 18#include <openssl/rand_drbg.h>
67c8e7f4 19#include <openssl/ocsp.h>
3c27208f
RS		 20#include <openssl/dh.h>
21#include <openssl/engine.h>
07bbc92c 22#include <openssl/async.h>
3c27208f 23#include <openssl/ct.h>
77359d22 24#include <openssl/trace.h>
67dc995e 25#include "internal/cryptlib.h"
cd420b0b 26#include "internal/refcount.h"
50ec7505 27#include "internal/ktls.h"
0f113f3e 28
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
29948ac8
BK		 632 /* Clear any shared connection state */
633 OPENSSL_free(s->shared_sigalgs);
634 s->shared_sigalgs = NULL;
635 s->shared_sigalgslen = 0;
636
0f113f3e
MC		 637 /*
638 * Check to see if we were changed into a different method, if so, revert
24252537 639 * back.
0f113f3e 640 */
24252537 641 if (s->method != s->ctx->method) {
0f113f3e
MC		 642 s->method->ssl_free(s);
643 s->method = s->ctx->method;
644 if (!s->method->ssl_new(s))
a89325e4 645 return 0;
b77f3ed1
MC		 646 } else {
647 if (!s->method->ssl_clear(s))
648 return 0;
649 }
33d23b87 650
af9752e5 651 RECORD_LAYER_clear(&s->rlayer);
33d23b87 652
a89325e4 653 return 1;
0f113f3e 654}
d02b48c6 655
4f43d0e7 656/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 657int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
658{
659 STACK_OF(SSL_CIPHER) *sk;
660
661 ctx->method = meth;
662
5d120511 663 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
2340ed27
BK		 664 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
665 return 0;
666 }
f865b081
MC		 667 sk = ssl_create_cipher_list(ctx->method,
668 ctx->tls13_ciphersuites,
669 &(ctx->cipher_list),
0f113f3e 670 &(ctx->cipher_list_by_id),
5d120511 671 OSSL_default_cipher_list(), ctx->cert);
0f113f3e 672 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 673 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 674 return 0;
0f113f3e 675 }
208fb891 676 return 1;
0f113f3e 677}
d02b48c6 678
4f43d0e7 679SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 680{
681 SSL *s;
682
683 if (ctx == NULL) {
684 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 685 return NULL;
0f113f3e
MC		 686 }
687 if (ctx->method == NULL) {
688 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 689 return NULL;
0f113f3e
MC		 690 }
691
b51bce94 692 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 693 if (s == NULL)
694 goto err;
0f113f3e 695
e6b10c34 696 s->references = 1;
16203f7b 697 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 698 if (s->lock == NULL) {
699 OPENSSL_free(s);
700 s = NULL;
ae3947de 701 goto err;
e6b10c34 702 }
ae3947de 703
c036e210 704 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 705
0f113f3e 706 s->options = ctx->options;
5ae4ceb9 707 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 708 s->min_proto_version = ctx->min_proto_version;
709 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 710 s->mode = ctx->mode;
711 s->max_cert_list = ctx->max_cert_list;
3fc8d856 712 s->max_early_data = ctx->max_early_data;
4e8548e8 713 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 714 s->num_tickets = ctx->num_tickets;
e97be718 715 s->pha_enabled = ctx->pha_enabled;
0f113f3e 716
f865b081
MC		 717 /* Shallow copy of the ciphersuites stack */
718 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
719 if (s->tls13_ciphersuites == NULL)
720 goto err;
721
2c382349
KR		 722 /*
723 * Earlier library versions used to copy the pointer to the CERT, not
724 * its contents; only when setting new parameters for the per-SSL
725 * copy, ssl_cert_new would be called (and the direct reference to
726 * the per-SSL_CTX settings would be lost, but those still were
727 * indirectly accessed for various purposes, and for that reason they
728 * used to be known as s->ctx->default_cert). Now we don't look at the
729 * SSL_CTX's CERT after having duplicated it once.
730 */
731 s->cert = ssl_cert_dup(ctx->cert);
732 if (s->cert == NULL)
733 goto err;
0f113f3e 734
52e1d7b1 735 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 736 s->msg_callback = ctx->msg_callback;
737 s->msg_callback_arg = ctx->msg_callback_arg;
738 s->verify_mode = ctx->verify_mode;
739 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 740 s->record_padding_cb = ctx->record_padding_cb;
741 s->record_padding_arg = ctx->record_padding_arg;
742 s->block_padding = ctx->block_padding;
0f113f3e 743 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 744 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 745 goto err;
0f113f3e
MC		 746 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
747 s->verify_callback = ctx->default_verify_callback;
748 s->generate_session_id = ctx->generate_session_id;
749
750 s->param = X509_VERIFY_PARAM_new();
a71edf3b 751 if (s->param == NULL)
0f113f3e
MC		 752 goto err;
753 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 754 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 755
756 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 757 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 758 s->split_send_fragment = ctx->split_send_fragment;
759 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 760 if (s->max_pipelines > 1)
761 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 762 if (ctx->default_read_buf_len > 0)
763 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 764
16203f7b 765 SSL_CTX_up_ref(ctx);
0f113f3e 766 s->ctx = ctx;
aff8c126
RS		 767 s->ext.debug_cb = 0;
768 s->ext.debug_arg = NULL;
769 s->ext.ticket_expected = 0;
770 s->ext.status_type = ctx->ext.status_type;
771 s->ext.status_expected = 0;
772 s->ext.ocsp.ids = NULL;
773 s->ext.ocsp.exts = NULL;
774 s->ext.ocsp.resp = NULL;
775 s->ext.ocsp.resp_len = 0;
16203f7b 776 SSL_CTX_up_ref(ctx);
222da979 777 s->session_ctx = ctx;
a230b26e 778#ifndef OPENSSL_NO_EC
aff8c126
RS		 779 if (ctx->ext.ecpointformats) {
780 s->ext.ecpointformats =
781 OPENSSL_memdup(ctx->ext.ecpointformats,
782 ctx->ext.ecpointformats_len);
783 if (!s->ext.ecpointformats)
0f113f3e 784 goto err;
aff8c126
RS		 785 s->ext.ecpointformats_len =
786 ctx->ext.ecpointformats_len;
787 }
dbc6268f 788#endif
aff8c126
RS		 789 if (ctx->ext.supportedgroups) {
790 s->ext.supportedgroups =
791 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 792 ctx->ext.supportedgroups_len
b92d7b62 793 * sizeof(*ctx->ext.supportedgroups));
aff8c126 794 if (!s->ext.supportedgroups)
0f113f3e 795 goto err;
aff8c126 796 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 797 }
dbc6268f 798
a230b26e 799#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 800 s->ext.npn = NULL;
a230b26e 801#endif
6f017a8f 802
aff8c126
RS		 803 if (s->ctx->ext.alpn) {
804 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
805 if (s->ext.alpn == NULL)
0f113f3e 806 goto err;
aff8c126
RS		 807 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
808 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 809 }
d02b48c6 810
696178ed 811 s->verified_chain = NULL;
0f113f3e 812 s->verify_result = X509_V_OK;
d02b48c6 813
a974e64a
MC		 814 s->default_passwd_callback = ctx->default_passwd_callback;
815 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
816
0f113f3e 817 s->method = ctx->method;
d02b48c6 818
44c04a2e
MC		 819 s->key_update = SSL_KEY_UPDATE_NONE;
820
c9598459
MC		 821 s->allow_early_data_cb = ctx->allow_early_data_cb;
822 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
823
0f113f3e
MC		 824 if (!s->method->ssl_new(s))
825 goto err;
d02b48c6 826
0f113f3e 827 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 828
61986d32 829 if (!SSL_clear(s))
69f68237 830 goto err;
58964a49 831
25a807bc
F		 832 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
833 goto err;
58964a49 834
ddac1974 835#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 836 s->psk_client_callback = ctx->psk_client_callback;
837 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 838#endif
f46184bd
MC		 839 s->psk_find_session_cb = ctx->psk_find_session_cb;
840 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 841
9f5a87fd
PY		 842 s->async_cb = ctx->async_cb;
843 s->async_cb_arg = ctx->async_cb_arg;
844
07bbc92c
MC		 845 s->job = NULL;
846
ed29e82a
RP		 847#ifndef OPENSSL_NO_CT
848 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 849 ctx->ct_validation_callback_arg))
ed29e82a
RP		 850 goto err;
851#endif
852
16203f7b 853 return s;
0f113f3e 854 err:
62adbcee 855 SSL_free(s);
0f113f3e 856 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 857 return NULL;
0f113f3e 858}
d02b48c6 859
e417070c
RS		 860int SSL_is_dtls(const SSL *s)
861{
862 return SSL_IS_DTLS(s) ? 1 : 0;
863}
864
c5ebfcab 865int SSL_up_ref(SSL *s)
a18a31e4 866{
16203f7b 867 int i;
c5ebfcab 868
2f545ae4 869 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 870 return 0;
871
872 REF_PRINT_COUNT("SSL", s);
873 REF_ASSERT_ISNT(i < 2);
874 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 875}
876
0f113f3e
MC		 877int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
878 unsigned int sid_ctx_len)
879{
fe9edc9d 880 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
0f113f3e
MC		 881 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
882 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
883 return 0;
884 }
885 ctx->sid_ctx_length = sid_ctx_len;
886 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 887
888 return 1;
0f113f3e 889}
4eb77b26 890
0f113f3e
MC		 891int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
892 unsigned int sid_ctx_len)
893{
894 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
895 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
896 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
897 return 0;
898 }
899 ssl->sid_ctx_length = sid_ctx_len;
900 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 901
902 return 1;
0f113f3e 903}
b4cadc6e 904
dc644fe2 905int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 906{
16203f7b 907 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 908 ctx->generate_session_id = cb;
16203f7b 909 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 910 return 1;
911}
dc644fe2
GT		 912
913int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 914{
16203f7b 915 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 916 ssl->generate_session_id = cb;
16203f7b 917 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 918 return 1;
919}
dc644fe2 920
f85c9904 921int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 922 unsigned int id_len)
923{
924 /*
925 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 926 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 927 * find if there's a session in the hash table that would conflict with
928 * any new session built out of this id/id_len and the ssl_version in use
929 * by this SSL.
930 */
931 SSL_SESSION r, *p;
932
cbe29648 933 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 934 return 0;
935
936 r.ssl_version = ssl->version;
937 r.session_id_length = id_len;
938 memcpy(r.session_id, id, id_len);
939
e2bb9b9b
TS		 940 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
941 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
942 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 943 return (p != NULL);
944}
dc644fe2 945
bb7cd4e3 946int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 947{
948 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
949}
bb7cd4e3
DSH		 950
951int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 952{
953 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
954}
926a56bf 955
bb7cd4e3 956int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 957{
958 return X509_VERIFY_PARAM_set_trust(s->param, trust);
959}
bb7cd4e3
DSH		 960
961int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 962{
963 return X509_VERIFY_PARAM_set_trust(s->param, trust);
964}
bb7cd4e3 965
919ba009
VD		 966int SSL_set1_host(SSL *s, const char *hostname)
967{
968 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
969}
970
971int SSL_add1_host(SSL *s, const char *hostname)
972{
973 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
974}
975
976void SSL_set_hostflags(SSL *s, unsigned int flags)
977{
978 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
979}
980
4588cb44 981const char *SSL_get0_peername(SSL *s)
919ba009
VD		 982{
983 return X509_VERIFY_PARAM_get0_peername(s->param);
984}
985
986int SSL_CTX_dane_enable(SSL_CTX *ctx)
987{
988 return dane_ctx_enable(&ctx->dane);
989}
990
5ae4ceb9
VD		 991unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
992{
993 unsigned long orig = ctx->dane.flags;
994
995 ctx->dane.flags |= flags;
996 return orig;
997}
998
999unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1000{
1001 unsigned long orig = ctx->dane.flags;
1002
1003 ctx->dane.flags &= ~flags;
1004 return orig;
1005}
1006
919ba009
VD		 1007int SSL_dane_enable(SSL *s, const char *basedomain)
1008{
b9aec69a 1009 SSL_DANE *dane = &s->dane;
919ba009
VD		 1010
1011 if (s->ctx->dane.mdmax == 0) {
1012 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1013 return 0;
1014 }
1015 if (dane->trecs != NULL) {
1016 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1017 return 0;
1018 }
1019
8d887efa
VD		 1020 /*
1021 * Default SNI name. This rejects empty names, while set1_host below
1022 * accepts them and disables host name checks. To avoid side-effects with
1023 * invalid input, set the SNI name first.
1024 */
aff8c126 1025 if (s->ext.hostname == NULL) {
dccd20d1 1026 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 1027 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1028 return -1;
8d887efa
VD		 1029 }
1030 }
1031
919ba009
VD		 1032 /* Primary RFC6125 reference identifier */
1033 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1034 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1035 return -1;
1036 }
1037
919ba009
VD		 1038 dane->mdpth = -1;
1039 dane->pdpth = -1;
1040 dane->dctx = &s->ctx->dane;
1041 dane->trecs = sk_danetls_record_new_null();
1042
1043 if (dane->trecs == NULL) {
1044 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1045 return -1;
1046 }
1047 return 1;
1048}
1049
5ae4ceb9
VD		 1050unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1051{
1052 unsigned long orig = ssl->dane.flags;
1053
1054 ssl->dane.flags |= flags;
1055 return orig;
1056}
1057
1058unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1059{
1060 unsigned long orig = ssl->dane.flags;
1061
1062 ssl->dane.flags &= ~flags;
1063 return orig;
1064}
1065
919ba009
VD		 1066int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1067{
b9aec69a 1068 SSL_DANE *dane = &s->dane;
919ba009 1069
c0a445a9 1070 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1071 return -1;
1072 if (dane->mtlsa) {
1073 if (mcert)
1074 *mcert = dane->mcert;
1075 if (mspki)
1076 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1077 }
1078 return dane->mdpth;
1079}
1080
1081int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1082 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1083{
b9aec69a 1084 SSL_DANE *dane = &s->dane;
919ba009 1085
c0a445a9 1086 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1087 return -1;
1088 if (dane->mtlsa) {
1089 if (usage)
1090 *usage = dane->mtlsa->usage;
1091 if (selector)
1092 *selector = dane->mtlsa->selector;
1093 if (mtype)
1094 *mtype = dane->mtlsa->mtype;
1095 if (data)
1096 *data = dane->mtlsa->data;
1097 if (dlen)
1098 *dlen = dane->mtlsa->dlen;
1099 }
1100 return dane->mdpth;
1101}
1102
b9aec69a 1103SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1104{
1105 return &s->dane;
1106}
1107
1108int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
a41a6120 1109 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 1110{
1111 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1112}
1113
a230b26e
EK		 1114int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1115 uint8_t ord)
919ba009
VD		 1116{
1117 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1118}
1119
ccf11751 1120int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1121{
1122 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1123}
ccf11751
DSH		 1124
1125int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1126{
1127 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1128}
ccf11751 1129
7af31968 1130X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1131{
1132 return ctx->param;
1133}
7af31968
DSH		 1134
1135X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1136{
1137 return ssl->param;
1138}
7af31968 1139
a5ee80b9 1140void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1141{
1142 ssl_cert_clear_certs(s->cert);
1143}
a5ee80b9 1144
4f43d0e7 1145void SSL_free(SSL *s)
0f113f3e
MC		 1146{
1147 int i;
58964a49 1148
e6e9170d
RS		 1149 if (s == NULL)
1150 return;
2f545ae4 1151 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1152 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1153 if (i > 0)
1154 return;
f3f1cf84 1155 REF_ASSERT_ISNT(i < 0);
d02b48c6 1156
222561fe 1157 X509_VERIFY_PARAM_free(s->param);
919ba009 1158 dane_final(&s->dane);
0f113f3e
MC		 1159 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1160
50ec7505
BP		 1161 RECORD_LAYER_release(&s->rlayer);
1162
b77f3ed1 1163 /* Ignore return value */
2e7dc7cd
MC		 1164 ssl_free_wbio_buffer(s);
1165
65e2d672 1166 BIO_free_all(s->wbio);
50ec7505 1167 s->wbio = NULL;
325cfa85 1168 BIO_free_all(s->rbio);
50ec7505 1169 s->rbio = NULL;
0f113f3e 1170
25aaa98a 1171 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1172
1173 /* add extra stuff */
25aaa98a
RS		 1174 sk_SSL_CIPHER_free(s->cipher_list);
1175 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1176 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
eee2a6a7 1177 sk_SSL_CIPHER_free(s->peer_ciphers);
0f113f3e
MC		 1178
1179 /* Make the next call work :-) */
1180 if (s->session != NULL) {
1181 ssl_clear_bad_session(s);
1182 SSL_SESSION_free(s->session);
1183 }
9368f865 1184 SSL_SESSION_free(s->psksession);
add8d0e9 1185 OPENSSL_free(s->psksession_id);
0f113f3e 1186
d31fb0b5 1187 clear_ciphers(s);
d02b48c6 1188
e0e920b1 1189 ssl_cert_free(s->cert);
29948ac8 1190 OPENSSL_free(s->shared_sigalgs);
0f113f3e 1191 /* Free up if allocated */
d02b48c6 1192
aff8c126 1193 OPENSSL_free(s->ext.hostname);
222da979 1194 SSL_CTX_free(s->session_ctx);
e481f9b9 1195#ifndef OPENSSL_NO_EC
aff8c126 1196 OPENSSL_free(s->ext.ecpointformats);
cd0fb43c 1197 OPENSSL_free(s->ext.peer_ecpointformats);
187753e0 1198#endif /* OPENSSL_NO_EC */
aff8c126 1199 OPENSSL_free(s->ext.supportedgroups);
45436e61 1200 OPENSSL_free(s->ext.peer_supportedgroups);
aff8c126 1201 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1202#ifndef OPENSSL_NO_OCSP
aff8c126 1203 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1204#endif
ed29e82a
RP		 1205#ifndef OPENSSL_NO_CT
1206 SCT_LIST_free(s->scts);
aff8c126 1207 OPENSSL_free(s->ext.scts);
ed29e82a 1208#endif
aff8c126
RS		 1209 OPENSSL_free(s->ext.ocsp.resp);
1210 OPENSSL_free(s->ext.alpn);
cfef5027 1211 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1212 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1213 OPENSSL_free(s->pha_context);
1214 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1215
fa7c2637 1216 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
98732979 1217 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
0f113f3e 1218
696178ed
DSH		 1219 sk_X509_pop_free(s->verified_chain, X509_free);
1220
0f113f3e
MC		 1221 if (s->method != NULL)
1222 s->method->ssl_free(s);
1223
e0e920b1 1224 SSL_CTX_free(s->ctx);
7c3908dd 1225
ff75a257
MC		 1226 ASYNC_WAIT_CTX_free(s->waitctx);
1227
e481f9b9 1228#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1229 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1230#endif
1231
e783bae2 1232#ifndef OPENSSL_NO_SRTP
25aaa98a 1233 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1234#endif
1235
16203f7b
AG		 1236 CRYPTO_THREAD_lock_free(s->lock);
1237
0f113f3e
MC		 1238 OPENSSL_free(s);
1239}
1240
65e2d672 1241void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1242{
65e2d672 1243 BIO_free_all(s->rbio);
3ffbe008
MC		 1244 s->rbio = rbio;
1245}
1246
65e2d672 1247void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1248{
1249 /*
1250 * If the output buffering BIO is still in place, remove it
1251 */
2e7dc7cd
MC		 1252 if (s->bbio != NULL)
1253 s->wbio = BIO_pop(s->wbio);
1254
65e2d672 1255 BIO_free_all(s->wbio);
0f113f3e 1256 s->wbio = wbio;
2e7dc7cd
MC		 1257
1258 /* Re-attach |bbio| to the new |wbio|. */
1259 if (s->bbio != NULL)
1260 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1261}
d02b48c6 1262
3ffbe008
MC		 1263void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1264{
65e2d672
MC		 1265 /*
1266 * For historical reasons, this function has many different cases in
1267 * ownership handling.
1268 */
1269
1270 /* If nothing has changed, do nothing */
1271 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1272 return;
1273
1274 /*
1275 * If the two arguments are equal then one fewer reference is granted by the
1276 * caller than we want to take
1277 */
1278 if (rbio != NULL && rbio == wbio)
1279 BIO_up_ref(rbio);
1280
1281 /*
1282 * If only the wbio is changed only adopt one reference.
1283 */
1284 if (rbio == SSL_get_rbio(s)) {
1285 SSL_set0_wbio(s, wbio);
1286 return;
1287 }
1288 /*
1289 * There is an asymmetry here for historical reasons. If only the rbio is
1290 * changed AND the rbio and wbio were originally different, then we only
1291 * adopt one reference.
1292 */
1293 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1294 SSL_set0_rbio(s, rbio);
1295 return;
1296 }
1297
1298 /* Otherwise, adopt both references. */
1299 SSL_set0_rbio(s, rbio);
1300 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1301}
1302
0821bcd4 1303BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1304{
2e7dc7cd 1305 return s->rbio;
0f113f3e 1306}
d02b48c6 1307
0821bcd4 1308BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1309{
2e7dc7cd
MC		 1310 if (s->bbio != NULL) {
1311 /*
1312 * If |bbio| is active, the true caller-configured BIO is its
1313 * |next_bio|.
1314 */
1315 return BIO_next(s->bbio);
1316 }
1317 return s->wbio;
0f113f3e 1318}
d02b48c6 1319
0821bcd4 1320int SSL_get_fd(const SSL *s)
0f113f3e 1321{
2e7dc7cd 1322 return SSL_get_rfd(s);
0f113f3e 1323}
24cbf3ef 1324
0821bcd4 1325int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1326{
1327 int ret = -1;
1328 BIO *b, *r;
1329
1330 b = SSL_get_rbio(s);
1331 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1332 if (r != NULL)
1333 BIO_get_fd(r, &ret);
26a7d938 1334 return ret;
0f113f3e 1335}
d02b48c6 1336
0821bcd4 1337int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1338{
1339 int ret = -1;
1340 BIO *b, *r;
1341
1342 b = SSL_get_wbio(s);
1343 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1344 if (r != NULL)
1345 BIO_get_fd(r, &ret);
26a7d938 1346 return ret;
0f113f3e 1347}
24cbf3ef 1348
bc36ee62 1349#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1350int SSL_set_fd(SSL *s, int fd)
1351{
1352 int ret = 0;
1353 BIO *bio = NULL;
1354
1355 bio = BIO_new(BIO_s_socket());
1356
1357 if (bio == NULL) {
1358 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1359 goto err;
1360 }
1361 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1362 SSL_set_bio(s, bio, bio);
50ec7505
BP		 1363#ifndef OPENSSL_NO_KTLS
1364 /*
1365 * The new socket is created successfully regardless of ktls_enable.
1366 * ktls_enable doesn't change any functionality of the socket, except
1367 * changing the setsockopt to enable the processing of ktls_start.
1368 * Thus, it is not a problem to call it for non-TLS sockets.
1369 */
1370 ktls_enable(fd);
1371#endif /* OPENSSL_NO_KTLS */
0f113f3e
MC		 1372 ret = 1;
1373 err:
26a7d938 1374 return ret;
0f113f3e 1375}
d02b48c6 1376
0f113f3e
MC		 1377int SSL_set_wfd(SSL *s, int fd)
1378{
2e7dc7cd 1379 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1380
2e7dc7cd
MC		 1381 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1382 || (int)BIO_get_fd(rbio, NULL) != fd) {
1383 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1384
1385 if (bio == NULL) {
1386 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1387 return 0;
0f113f3e
MC		 1388 }
1389 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1390 SSL_set0_wbio(s, bio);
50ec7505
BP		 1391#ifndef OPENSSL_NO_KTLS
1392 /*
1393 * The new socket is created successfully regardless of ktls_enable.
1394 * ktls_enable doesn't change any functionality of the socket, except
1395 * changing the setsockopt to enable the processing of ktls_start.
1396 * Thus, it is not a problem to call it for non-TLS sockets.
1397 */
1398 ktls_enable(fd);
1399#endif /* OPENSSL_NO_KTLS */
2e7dc7cd 1400 } else {
65e2d672
MC		 1401 BIO_up_ref(rbio);
1402 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1403 }
1404 return 1;
0f113f3e
MC		 1405}
1406
1407int SSL_set_rfd(SSL *s, int fd)
1408{
2e7dc7cd 1409 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1410
2e7dc7cd
MC		 1411 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1412 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1413 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1414
1415 if (bio == NULL) {
1416 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1417 return 0;
0f113f3e
MC		 1418 }
1419 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1420 SSL_set0_rbio(s, bio);
2e7dc7cd 1421 } else {
65e2d672
MC		 1422 BIO_up_ref(wbio);
1423 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1424 }
1425
1426 return 1;
0f113f3e
MC		 1427}
1428#endif
ca03109c
BM		 1429
1430/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1431size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1432{
1433 size_t ret = 0;
1434
555cbb32
TS		 1435 ret = s->s3.tmp.finish_md_len;
1436 if (count > ret)
1437 count = ret;
1438 memcpy(buf, s->s3.tmp.finish_md, count);
0f113f3e
MC		 1439 return ret;
1440}
ca03109c
BM		 1441
1442/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1443size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1444{
1445 size_t ret = 0;
ca03109c 1446
555cbb32
TS		 1447 ret = s->s3.tmp.peer_finish_md_len;
1448 if (count > ret)
1449 count = ret;
1450 memcpy(buf, s->s3.tmp.peer_finish_md, count);
0f113f3e
MC		 1451 return ret;
1452}
ca03109c 1453
0821bcd4 1454int SSL_get_verify_mode(const SSL *s)
0f113f3e 1455{
26a7d938 1456 return s->verify_mode;
0f113f3e 1457}
d02b48c6 1458
0821bcd4 1459int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1460{
1461 return X509_VERIFY_PARAM_get_depth(s->param);
1462}
7f89714e 1463
0f113f3e 1464int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1465 return s->verify_callback;
0f113f3e 1466}
d02b48c6 1467
0821bcd4 1468int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1469{
26a7d938 1470 return ctx->verify_mode;
0f113f3e 1471}
d02b48c6 1472
0821bcd4 1473int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1474{
1475 return X509_VERIFY_PARAM_get_depth(ctx->param);
1476}
1477
1478int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1479 return ctx->default_verify_callback;
0f113f3e
MC		 1480}
1481
1482void SSL_set_verify(SSL *s, int mode,
1483 int (*callback) (int ok, X509_STORE_CTX *ctx))
1484{
1485 s->verify_mode = mode;
1486 if (callback != NULL)
1487 s->verify_callback = callback;
1488}
1489
1490void SSL_set_verify_depth(SSL *s, int depth)
1491{
1492 X509_VERIFY_PARAM_set_depth(s->param, depth);
1493}
1494
1495void SSL_set_read_ahead(SSL *s, int yes)
1496{
52e1d7b1 1497 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1498}
d02b48c6 1499
0821bcd4 1500int SSL_get_read_ahead(const SSL *s)
0f113f3e 1501{
52e1d7b1 1502 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1503}
d02b48c6 1504
0821bcd4 1505int SSL_pending(const SSL *s)
0f113f3e 1506{
8b0e934a
MC		 1507 size_t pending = s->method->ssl_pending(s);
1508
0f113f3e
MC		 1509 /*
1510 * SSL_pending cannot work properly if read-ahead is enabled
1511 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1512 * impossible to fix since SSL_pending cannot report errors that may be
1513 * observed while scanning the new data. (Note that SSL_pending() is
1514 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1515 *
1516 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1517 * we just return INT_MAX.
0f113f3e 1518 */
348240c6 1519 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1520}
d02b48c6 1521
49580f25
MC		 1522int SSL_has_pending(const SSL *s)
1523{
1524 /*
1525 * Similar to SSL_pending() but returns a 1 to indicate that we have
1526 * unprocessed data available or 0 otherwise (as opposed to the number of
1527 * bytes available). Unlike SSL_pending() this will take into account
1528 * read_ahead data. A 1 return simply indicates that we have unprocessed
1529 * data. That data may not result in any application data, or we may fail
1530 * to parse the records for some reason.
1531 */
b8c49611 1532 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1533 return 1;
1534
1535 return RECORD_LAYER_read_pending(&s->rlayer);
1536}
1537
0821bcd4 1538X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1539{
1540 X509 *r;
d02b48c6 1541
0f113f3e
MC		 1542 if ((s == NULL) || (s->session == NULL))
1543 r = NULL;
1544 else
1545 r = s->session->peer;
d02b48c6 1546
0f113f3e 1547 if (r == NULL)
26a7d938 1548 return r;
d02b48c6 1549
05f0fb9f 1550 X509_up_ref(r);
0f113f3e 1551
26a7d938 1552 return r;
0f113f3e 1553}
d02b48c6 1554
0821bcd4 1555STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1556{
1557 STACK_OF(X509) *r;
1558
c34b0f99 1559 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1560 r = NULL;
1561 else
c34b0f99 1562 r = s->session->peer_chain;
0f113f3e
MC		 1563
1564 /*
1565 * If we are a client, cert_chain includes the peer's own certificate; if
1566 * we are a server, it does not.
1567 */
1568
26a7d938 1569 return r;
0f113f3e
MC		 1570}
1571
1572/*
1573 * Now in theory, since the calling process own 't' it should be safe to
1574 * modify. We need to be able to read f without being hassled
1575 */
17dd65e6 1576int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1577{
16203f7b 1578 int i;
0f113f3e 1579 /* Do we need to to SSL locking? */
61986d32 1580 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1581 return 0;
69f68237 1582 }
0f113f3e
MC		 1583
1584 /*
87d9cafa 1585 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1586 */
1587 if (t->method != f->method) {
919ba009
VD		 1588 t->method->ssl_free(t);
1589 t->method = f->method;
1590 if (t->method->ssl_new(t) == 0)
1591 return 0;
0f113f3e
MC		 1592 }
1593
2f545ae4 1594 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1595 ssl_cert_free(t->cert);
1596 t->cert = f->cert;
348240c6 1597 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1598 return 0;
69f68237 1599 }
17dd65e6
MC		 1600
1601 return 1;
0f113f3e 1602}
d02b48c6 1603
58964a49 1604/* Fix this so it checks all the valid key/cert options */
0821bcd4 1605int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1606{
a230b26e
EK		 1607 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1608 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1609 return 0;
0f113f3e
MC		 1610 }
1611 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1612 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1613 return 0;
0f113f3e 1614 }
26a7d938
K		 1615 return X509_check_private_key
1616 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1617}
d02b48c6 1618
58964a49 1619/* Fix this function so that it takes an optional type parameter */
0821bcd4 1620int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1621{
1622 if (ssl == NULL) {
1623 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1624 return 0;
0f113f3e 1625 }
0f113f3e
MC		 1626 if (ssl->cert->key->x509 == NULL) {
1627 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1628 return 0;
0f113f3e
MC		 1629 }
1630 if (ssl->cert->key->privatekey == NULL) {
1631 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1632 return 0;
0f113f3e 1633 }
26a7d938
K		 1634 return X509_check_private_key(ssl->cert->key->x509,
1635 ssl->cert->key->privatekey);
0f113f3e 1636}
d02b48c6 1637
07bbc92c
MC		 1638int SSL_waiting_for_async(SSL *s)
1639{
e8aa8b6c 1640 if (s->job)
82676094
MC		 1641 return 1;
1642
07bbc92c
MC		 1643 return 0;
1644}
1645
ff75a257 1646int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1647{
ff75a257
MC		 1648 ASYNC_WAIT_CTX *ctx = s->waitctx;
1649
1650 if (ctx == NULL)
1651 return 0;
1652 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1653}
f4da39d2 1654
ff75a257
MC		 1655int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1656 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1657{
1658 ASYNC_WAIT_CTX *ctx = s->waitctx;
1659
1660 if (ctx == NULL)
1661 return 0;
1662 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1663 numdelfds);
f4da39d2
MC		 1664}
1665
9f5a87fd
PY		 1666int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1667{
1668 ctx->async_cb = callback;
1669 return 1;
1670}
1671
1672int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1673{
1674 ctx->async_cb_arg = arg;
1675 return 1;
1676}
1677
1678int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1679{
1680 s->async_cb = callback;
1681 return 1;
1682}
1683
1684int SSL_set_async_callback_arg(SSL *s, void *arg)
1685{
1686 s->async_cb_arg = arg;
1687 return 1;
1688}
1689
1690int SSL_get_async_status(SSL *s, int *status)
1691{
1692 ASYNC_WAIT_CTX *ctx = s->waitctx;
1693
1694 if (ctx == NULL)
1695 return 0;
1696 *status = ASYNC_WAIT_CTX_get_status(ctx);
1697 return 1;
1698}
1699
4f43d0e7 1700int SSL_accept(SSL *s)
0f113f3e 1701{
c4c32155 1702 if (s->handshake_func == NULL) {
0f113f3e
MC		 1703 /* Not properly initialized yet */
1704 SSL_set_accept_state(s);
07bbc92c 1705 }
add2f5ca
MC		 1706
1707 return SSL_do_handshake(s);
0f113f3e 1708}
d02b48c6 1709
4f43d0e7 1710int SSL_connect(SSL *s)
0f113f3e 1711{
c4c32155 1712 if (s->handshake_func == NULL) {
0f113f3e
MC		 1713 /* Not properly initialized yet */
1714 SSL_set_connect_state(s);
add2f5ca 1715 }
b31b04d9 1716
add2f5ca 1717 return SSL_do_handshake(s);
0f113f3e 1718}
d02b48c6 1719
0821bcd4 1720long SSL_get_default_timeout(const SSL *s)
0f113f3e 1721{
26a7d938 1722 return s->method->get_timeout();
0f113f3e
MC		 1723}
1724
9f5a87fd
PY		 1725static int ssl_async_wait_ctx_cb(void *arg)
1726{
1727 SSL *s = (SSL *)arg;
1728
1729 return s->async_cb(s, s->async_cb_arg);
1730}
1731
7fecbf6f 1732static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1733 int (*func) (void *))
1734{
add2f5ca 1735 int ret;
ff75a257
MC		 1736 if (s->waitctx == NULL) {
1737 s->waitctx = ASYNC_WAIT_CTX_new();
1738 if (s->waitctx == NULL)
1739 return -1;
9f5a87fd
PY		 1740 if (s->async_cb != NULL
1741 && !ASYNC_WAIT_CTX_set_callback
1742 (s->waitctx, ssl_async_wait_ctx_cb, s))
1743 return -1;
ff75a257 1744 }
e8aa8b6c 1745 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1746 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1747 case ASYNC_ERR:
1748 s->rwstate = SSL_NOTHING;
7fecbf6f 1749 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1750 return -1;
1751 case ASYNC_PAUSE:
1752 s->rwstate = SSL_ASYNC_PAUSED;
1753 return -1;
fc7f190c
MC		 1754 case ASYNC_NO_JOBS:
1755 s->rwstate = SSL_ASYNC_NO_JOBS;
1756 return -1;
add2f5ca
MC		 1757 case ASYNC_FINISH:
1758 s->job = NULL;
1759 return ret;
1760 default:
1761 s->rwstate = SSL_NOTHING;
7fecbf6f 1762 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1763 /* Shouldn't happen */
1764 return -1;
1765 }
1766}
07bbc92c 1767
add2f5ca 1768static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1769{
1770 struct ssl_async_args *args;
1771 SSL *s;
1772 void *buf;
348240c6 1773 size_t num;
07bbc92c
MC		 1774
1775 args = (struct ssl_async_args *)vargs;
1776 s = args->s;
1777 buf = args->buf;
1778 num = args->num;
ec447924
MC		 1779 switch (args->type) {
1780 case READFUNC:
7ee8627f 1781 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1782 case WRITEFUNC:
7ee8627f 1783 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1784 case OTHERFUNC:
1785 return args->f.func_other(s);
1786 }
1787 return -1;
07bbc92c
MC		 1788}
1789
4ee7d3f9 1790int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1791{
c4c32155 1792 if (s->handshake_func == NULL) {
4ee7d3f9 1793 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1794 return -1;
1795 }
1796
1797 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1798 s->rwstate = SSL_NOTHING;
4ee7d3f9 1799 return 0;
0f113f3e 1800 }
07bbc92c 1801
564547e4
MC		 1802 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1803 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1804 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1805 return 0;
1806 }
564547e4
MC		 1807 /*
1808 * If we are a client and haven't received the ServerHello etc then we
1809 * better do that
1810 */
1811 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1812
e8aa8b6c 1813 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1814 struct ssl_async_args args;
eda75751 1815 int ret;
add2f5ca
MC		 1816
1817 args.s = s;
1818 args.buf = buf;
1819 args.num = num;
ec447924
MC		 1820 args.type = READFUNC;
1821 args.f.func_read = s->method->ssl_read;
add2f5ca 1822
eda75751 1823 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1824 *readbytes = s->asyncrw;
eda75751 1825 return ret;
07bbc92c 1826 } else {
54105ddd 1827 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1828 }
0f113f3e
MC		 1829}
1830
4ee7d3f9 1831int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1832{
1833 int ret;
54105ddd 1834 size_t readbytes;
eda75751
MC		 1835
1836 if (num < 0) {
4ee7d3f9 1837 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1838 return -1;
1839 }
1840
4ee7d3f9 1841 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1842
1843 /*
1844 * The cast is safe here because ret should be <= INT_MAX because num is
1845 * <= INT_MAX
1846 */
1847 if (ret > 0)
54105ddd 1848 ret = (int)readbytes;
eda75751
MC		 1849
1850 return ret;
1851}
1852
4ee7d3f9
KR		 1853int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1854{
1855 int ret = ssl_read_internal(s, buf, num, readbytes);
1856
1857 if (ret < 0)
1858 ret = 0;
1859 return ret;
1860}
1861
f533fbd4 1862int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1863{
1864 int ret;
1865
1866 if (!s->server) {
f533fbd4
MC		 1867 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1868 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1869 }
1870
d781d247
MC		 1871 switch (s->early_data_state) {
1872 case SSL_EARLY_DATA_NONE:
1873 if (!SSL_in_before(s)) {
f533fbd4
MC		 1874 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1875 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1876 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1877 }
1878 /* fall through */
1879
1880 case SSL_EARLY_DATA_ACCEPT_RETRY:
1881 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1882 ret = SSL_accept(s);
1883 if (ret <= 0) {
1884 /* NBIO or error */
1885 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1886 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1887 }
1888 /* fall through */
1889
1890 case SSL_EARLY_DATA_READ_RETRY:
1891 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1892 s->early_data_state = SSL_EARLY_DATA_READING;
1893 ret = SSL_read_ex(s, buf, num, readbytes);
1894 /*
ef6c191b
MC		 1895 * State machine will update early_data_state to
1896 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1897 * message
d781d247
MC		 1898 */
1899 if (ret > 0 || (ret <= 0 && s->early_data_state
1900 != SSL_EARLY_DATA_FINISHED_READING)) {
1901 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1902 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1903 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1904 }
1905 } else {
1906 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1907 }
1908 *readbytes = 0;
f533fbd4 1909 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1910
1911 default:
f533fbd4
MC		 1912 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1913 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1914 }
1915}
1916
f5b519c4 1917int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1918{
1919 return s->ext.early_data;
1920}
1921
4ee7d3f9 1922static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1923{
c4c32155 1924 if (s->handshake_func == NULL) {
4ee7d3f9 1925 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1926 return -1;
1927 }
1928
1929 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1930 return 0;
0f113f3e 1931 }
e8aa8b6c 1932 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1933 struct ssl_async_args args;
eda75751 1934 int ret;
0f113f3e 1935
add2f5ca
MC		 1936 args.s = s;
1937 args.buf = buf;
1938 args.num = num;
ec447924
MC		 1939 args.type = READFUNC;
1940 args.f.func_read = s->method->ssl_peek;
07bbc92c 1941
eda75751 1942 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1943 *readbytes = s->asyncrw;
eda75751 1944 return ret;
add2f5ca 1945 } else {
54105ddd 1946 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1947 }
07bbc92c
MC		 1948}
1949
4ee7d3f9 1950int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1951{
1952 int ret;
4ee7d3f9 1953 size_t readbytes;
7ee8627f
MC		 1954
1955 if (num < 0) {
4ee7d3f9 1956 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1957 return -1;
1958 }
1959
4ee7d3f9 1960 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1961
1962 /*
1963 * The cast is safe here because ret should be <= INT_MAX because num is
1964 * <= INT_MAX
1965 */
1966 if (ret > 0)
4ee7d3f9 1967 ret = (int)readbytes;
7ee8627f
MC		 1968
1969 return ret;
1970}
1971
4ee7d3f9
KR		 1972
1973int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1974{
1975 int ret = ssl_peek_internal(s, buf, num, readbytes);
1976
1977 if (ret < 0)
1978 ret = 0;
1979 return ret;
1980}
1981
1982int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1983{
c4c32155 1984 if (s->handshake_func == NULL) {
4ee7d3f9 1985 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1986 return -1;
1987 }
1988
1989 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1990 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1991 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1992 return -1;
0f113f3e 1993 }
07bbc92c 1994
ef6c191b 1995 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1996 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1997 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1998 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1999 return 0;
0a5ece5b 2000 }
564547e4
MC		 2001 /* If we are a client and haven't sent the Finished we better do that */
2002 ossl_statem_check_finish_init(s, 1);
49e7fe12 2003
e8aa8b6c 2004 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 2005 int ret;
add2f5ca
MC		 2006 struct ssl_async_args args;
2007
2008 args.s = s;
2009 args.buf = (void *)buf;
2010 args.num = num;
ec447924
MC		 2011 args.type = WRITEFUNC;
2012 args.f.func_write = s->method->ssl_write;
add2f5ca 2013
7ee8627f
MC		 2014 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2015 *written = s->asyncrw;
2016 return ret;
07bbc92c 2017 } else {
7ee8627f 2018 return s->method->ssl_write(s, buf, num, written);
07bbc92c 2019 }
0f113f3e 2020}
d02b48c6 2021
7c3a7561
BP		 2022ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2023{
2024 ossl_ssize_t ret;
2025
2026 if (s->handshake_func == NULL) {
2027 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2028 return -1;
2029 }
2030
2031 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2032 s->rwstate = SSL_NOTHING;
2033 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2034 return -1;
2035 }
2036
2037 if (!BIO_get_ktls_send(s->wbio)) {
2038 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2039 return -1;
2040 }
2041
2042 /* If we have an alert to send, lets send it */
2043 if (s->s3.alert_dispatch) {
2044 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2045 if (ret <= 0) {
2046 /* SSLfatal() already called if appropriate */
2047 return ret;
2048 }
2049 /* if it went, fall through and send more stuff */
2050 }
2051
2052 s->rwstate = SSL_WRITING;
2053 if (BIO_flush(s->wbio) <= 0) {
2054 if (!BIO_should_retry(s->wbio)) {
2055 s->rwstate = SSL_NOTHING;
2056 } else {
2057#ifdef EAGAIN
2058 set_sys_error(EAGAIN);
2059#endif
2060 }
2061 return -1;
2062 }
2063
712c0942
JB		 2064#ifdef OPENSSL_NO_KTLS
2065 ERR_raise_data(ERR_LIB_SYS, ERR_R_INTERNAL_ERROR, "calling sendfile()");
2066 return -1;
7c3a7561 2067#else
712c0942 2068 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
7c3a7561
BP		 2069 if (ret < 0) {
2070#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2071 if ((get_last_sys_error() == EAGAIN) ||
2072 (get_last_sys_error() == EINTR) ||
2073 (get_last_sys_error() == EBUSY))
2074 BIO_set_retry_write(s->wbio);
2075 else
2076#endif
7c3a7561 2077 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
7c3a7561
BP		 2078 return ret;
2079 }
2080 s->rwstate = SSL_NOTHING;
2081 return ret;
712c0942 2082#endif
7c3a7561
BP		 2083}
2084
4ee7d3f9
KR		 2085int SSL_write(SSL *s, const void *buf, int num)
2086{
2087 int ret;
2088 size_t written;
2089
2090 if (num < 0) {
2091 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2092 return -1;
2093 }
2094
2095 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2096
2097 /*
2098 * The cast is safe here because ret should be <= INT_MAX because num is
2099 * <= INT_MAX
2100 */
2101 if (ret > 0)
2102 ret = (int)written;
2103
2104 return ret;
2105}
2106
2107int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2108{
2109 int ret = ssl_write_internal(s, buf, num, written);
2110
2111 if (ret < 0)
2112 ret = 0;
2113 return ret;
2114}
2115
0665b4ed 2116int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 2117{
a0cb628b 2118 int ret, early_data_state;
2a8db717 2119 size_t writtmp;
f7414b08 2120 uint32_t partialwrite;
49e7fe12 2121
49e7fe12
MC		 2122 switch (s->early_data_state) {
2123 case SSL_EARLY_DATA_NONE:
09f28874
MC		 2124 if (s->server
2125 || !SSL_in_before(s)
add8d0e9
MC		 2126 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2127 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 2128 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2129 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2130 return 0;
2131 }
2132 /* fall through */
2133
2134 case SSL_EARLY_DATA_CONNECT_RETRY:
2135 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2136 ret = SSL_connect(s);
2137 if (ret <= 0) {
2138 /* NBIO or error */
2139 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2140 return 0;
2141 }
2142 /* fall through */
2143
2144 case SSL_EARLY_DATA_WRITE_RETRY:
2145 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2146 /*
2147 * We disable partial write for early data because we don't keep track
2148 * of how many bytes we've written between the SSL_write_ex() call and
2149 * the flush if the flush needs to be retried)
2150 */
2151 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2152 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2153 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2154 s->mode |= partialwrite;
2a8db717
MC		 2155 if (!ret) {
2156 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2157 return ret;
2158 }
2159 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2160 /* fall through */
2161
2162 case SSL_EARLY_DATA_WRITE_FLUSH:
2163 /* The buffering BIO is still in place so we need to flush it */
2164 if (statem_flush(s) != 1)
2165 return 0;
2a8db717 2166 *written = num;
49e7fe12 2167 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2168 return 1;
49e7fe12 2169
116d0da5 2170 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2171 case SSL_EARLY_DATA_READ_RETRY:
2172 early_data_state = s->early_data_state;
09f28874
MC		 2173 /* We are a server writing to an unauthenticated client */
2174 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2175 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2176 /* The buffering BIO is still in place */
2177 if (ret)
2178 (void)BIO_flush(s->wbio);
bbea9f2c 2179 s->early_data_state = early_data_state;
09f28874
MC		 2180 return ret;
2181
49e7fe12 2182 default:
09f28874 2183 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2184 return 0;
2185 }
2186}
2187
4f43d0e7 2188int SSL_shutdown(SSL *s)
0f113f3e
MC		 2189{
2190 /*
2191 * Note that this function behaves differently from what one might
2192 * expect. Return values are 0 for no success (yet), 1 for success; but
2193 * calling it once is usually not enough, even if blocking I/O is used
2194 * (see ssl3_shutdown).
2195 */
2196
c4c32155 2197 if (s->handshake_func == NULL) {
0f113f3e
MC		 2198 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2199 return -1;
2200 }
2201
64f9f406 2202 if (!SSL_in_init(s)) {
e8aa8b6c 2203 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2204 struct ssl_async_args args;
ec447924 2205
64f9f406
MC		 2206 args.s = s;
2207 args.type = OTHERFUNC;
2208 args.f.func_other = s->method->ssl_shutdown;
ec447924 2209
64f9f406
MC		 2210 return ssl_start_async_job(s, &args, ssl_io_intern);
2211 } else {
2212 return s->method->ssl_shutdown(s);
2213 }
ec447924 2214 } else {
64f9f406
MC		 2215 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2216 return -1;
ec447924 2217 }
0f113f3e 2218}
d02b48c6 2219
4fbfe86a 2220int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2221{
f14afcaa 2222 /*
a9998e2f 2223 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2224 * negotiated, and that it is appropriate to call SSL_key_update() instead
2225 * of SSL_renegotiate().
2226 */
44c04a2e
MC		 2227 if (!SSL_IS_TLS13(s)) {
2228 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2229 return 0;
2230 }
2231
2232 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2233 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2234 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2235 return 0;
2236 }
2237
2238 if (!SSL_is_init_finished(s)) {
2239 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2240 return 0;
2241 }
2242
2243 ossl_statem_set_in_init(s, 1);
44c04a2e 2244 s->key_update = updatetype;
44c04a2e
MC		 2245 return 1;
2246}
2247
3499327b 2248int SSL_get_key_update_type(const SSL *s)
53d1d07d
MC		 2249{
2250 return s->key_update;
2251}
2252
4f43d0e7 2253int SSL_renegotiate(SSL *s)
0f113f3e 2254{
44c04a2e
MC		 2255 if (SSL_IS_TLS13(s)) {
2256 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2257 return 0;
44c04a2e 2258 }
cda6b998 2259
db0f35dd
TS		 2260 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2261 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2262 return 0;
2263 }
44959ee4 2264
db0f35dd 2265 s->renegotiate = 1;
0f113f3e 2266 s->new_session = 1;
44959ee4 2267
26a7d938 2268 return s->method->ssl_renegotiate(s);
0f113f3e 2269}
d02b48c6 2270
44959ee4 2271int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2272{
db0f35dd
TS		 2273 if (SSL_IS_TLS13(s)) {
2274 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2275 return 0;
db0f35dd 2276 }
cda6b998 2277
db0f35dd
TS		 2278 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2279 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2280 return 0;
2281 }
c519e89f 2282
db0f35dd 2283 s->renegotiate = 1;
0f113f3e 2284 s->new_session = 0;
c519e89f 2285
26a7d938 2286 return s->method->ssl_renegotiate(s);
0f113f3e 2287}
44959ee4 2288
3499327b 2289int SSL_renegotiate_pending(const SSL *s)
0f113f3e
MC		 2290{
2291 /*
2292 * becomes true when negotiation is requested; false again once a
2293 * handshake has finished
2294 */
2295 return (s->renegotiate != 0);
2296}
2297
2298long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2299{
2300 long l;
2301
2302 switch (cmd) {
2303 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2304 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2305 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2306 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2307 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2308 return l;
0f113f3e
MC		 2309
2310 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2311 s->msg_callback_arg = parg;
2312 return 1;
2313
0f113f3e
MC		 2314 case SSL_CTRL_MODE:
2315 return (s->mode |= larg);
2316 case SSL_CTRL_CLEAR_MODE:
2317 return (s->mode &= ~larg);
2318 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2319 return (long)s->max_cert_list;
0f113f3e 2320 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2321 if (larg < 0)
2322 return 0;
2323 l = (long)s->max_cert_list;
2324 s->max_cert_list = (size_t)larg;
2325 return l;
0f113f3e
MC		 2326 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2327 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2328 return 0;
50ec7505
BP		 2329#ifndef OPENSSL_NO_KTLS
2330 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2331 return 0;
2332#endif /* OPENSSL_NO_KTLS */
0f113f3e 2333 s->max_send_fragment = larg;
d102d9df
MC		 2334 if (s->max_send_fragment < s->split_send_fragment)
2335 s->split_send_fragment = s->max_send_fragment;
2336 return 1;
2337 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2338 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2339 return 0;
2340 s->split_send_fragment = larg;
0f113f3e 2341 return 1;
d102d9df
MC		 2342 case SSL_CTRL_SET_MAX_PIPELINES:
2343 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2344 return 0;
2345 s->max_pipelines = larg;
94777c9c
MC		 2346 if (larg > 1)
2347 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2348 return 1;
0f113f3e 2349 case SSL_CTRL_GET_RI_SUPPORT:
555cbb32 2350 return s->s3.send_connection_binding;
0f113f3e
MC		 2351 case SSL_CTRL_CERT_FLAGS:
2352 return (s->cert->cert_flags |= larg);
2353 case SSL_CTRL_CLEAR_CERT_FLAGS:
2354 return (s->cert->cert_flags &= ~larg);
2355
2356 case SSL_CTRL_GET_RAW_CIPHERLIST:
2357 if (parg) {
555cbb32 2358 if (s->s3.tmp.ciphers_raw == NULL)
0f113f3e 2359 return 0;
555cbb32
TS		 2360 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2361 return (int)s->s3.tmp.ciphers_rawlen;
e9fa092e
EK		 2362 } else {
2363 return TLS_CIPHER_LEN;
2364 }
c5364614 2365 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2366 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2367 return -1;
dccd20d1 2368 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2369 return 1;
2370 else
2371 return 0;
7946ab33 2372 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2373 return ssl_check_allowed_versions(larg, s->max_proto_version)
2374 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2375 &s->min_proto_version);
3edabd3c
CH		 2376 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2377 return s->min_proto_version;
7946ab33 2378 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2379 return ssl_check_allowed_versions(s->min_proto_version, larg)
2380 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2381 &s->max_proto_version);
3edabd3c
CH		 2382 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2383 return s->max_proto_version;
0f113f3e 2384 default:
26a7d938 2385 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2386 }
2387}
2388
2389long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2390{
2391 switch (cmd) {
2392 case SSL_CTRL_SET_MSG_CALLBACK:
2393 s->msg_callback = (void (*)
2394 (int write_p, int version, int content_type,
2395 const void *buf, size_t len, SSL *ssl,
2396 void *arg))(fp);
2397 return 1;
2398
2399 default:
26a7d938 2400 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2401 }
2402}
d3442bc7 2403
3c1d6bbc 2404LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2405{
2406 return ctx->sessions;
2407}
2408
2409long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2410{
2411 long l;
2412 /* For some cases with ctx == NULL perform syntax checks */
2413 if (ctx == NULL) {
2414 switch (cmd) {
14536c8c 2415#ifndef OPENSSL_NO_EC
de4d764e
MC		 2416 case SSL_CTRL_SET_GROUPS_LIST:
2417 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2418#endif
2419 case SSL_CTRL_SET_SIGALGS_LIST:
2420 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2421 return tls1_set_sigalgs_list(NULL, parg, 0);
2422 default:
2423 return 0;
2424 }
2425 }
2426
2427 switch (cmd) {
2428 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2429 return ctx->read_ahead;
0f113f3e
MC		 2430 case SSL_CTRL_SET_READ_AHEAD:
2431 l = ctx->read_ahead;
2432 ctx->read_ahead = larg;
26a7d938 2433 return l;
0f113f3e
MC		 2434
2435 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2436 ctx->msg_callback_arg = parg;
2437 return 1;
2438
2439 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2440 return (long)ctx->max_cert_list;
0f113f3e 2441 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2442 if (larg < 0)
2443 return 0;
2444 l = (long)ctx->max_cert_list;
2445 ctx->max_cert_list = (size_t)larg;
2446 return l;
0f113f3e
MC		 2447
2448 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2449 if (larg < 0)
2450 return 0;
2451 l = (long)ctx->session_cache_size;
2452 ctx->session_cache_size = (size_t)larg;
2453 return l;
0f113f3e 2454 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2455 return (long)ctx->session_cache_size;
0f113f3e
MC		 2456 case SSL_CTRL_SET_SESS_CACHE_MODE:
2457 l = ctx->session_cache_mode;
2458 ctx->session_cache_mode = larg;
26a7d938 2459 return l;
0f113f3e 2460 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2461 return ctx->session_cache_mode;
0f113f3e
MC		 2462
2463 case SSL_CTRL_SESS_NUMBER:
26a7d938 2464 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2465 case SSL_CTRL_SESS_CONNECT:
9ef9088c 2466 return tsan_load(&ctx->stats.sess_connect);
0f113f3e 2467 case SSL_CTRL_SESS_CONNECT_GOOD:
9ef9088c 2468 return tsan_load(&ctx->stats.sess_connect_good);
0f113f3e 2469 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
9ef9088c 2470 return tsan_load(&ctx->stats.sess_connect_renegotiate);
0f113f3e 2471 case SSL_CTRL_SESS_ACCEPT:
9ef9088c 2472 return tsan_load(&ctx->stats.sess_accept);
0f113f3e 2473 case SSL_CTRL_SESS_ACCEPT_GOOD:
9ef9088c 2474 return tsan_load(&ctx->stats.sess_accept_good);
0f113f3e 2475 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
9ef9088c 2476 return tsan_load(&ctx->stats.sess_accept_renegotiate);
0f113f3e 2477 case SSL_CTRL_SESS_HIT:
9ef9088c 2478 return tsan_load(&ctx->stats.sess_hit);
0f113f3e 2479 case SSL_CTRL_SESS_CB_HIT:
9ef9088c 2480 return tsan_load(&ctx->stats.sess_cb_hit);
0f113f3e 2481 case SSL_CTRL_SESS_MISSES:
9ef9088c 2482 return tsan_load(&ctx->stats.sess_miss);
0f113f3e 2483 case SSL_CTRL_SESS_TIMEOUTS:
9ef9088c 2484 return tsan_load(&ctx->stats.sess_timeout);
0f113f3e 2485 case SSL_CTRL_SESS_CACHE_FULL:
9ef9088c 2486 return tsan_load(&ctx->stats.sess_cache_full);
0f113f3e
MC		 2487 case SSL_CTRL_MODE:
2488 return (ctx->mode |= larg);
2489 case SSL_CTRL_CLEAR_MODE:
2490 return (ctx->mode &= ~larg);
2491 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2492 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2493 return 0;
2494 ctx->max_send_fragment = larg;
d102d9df 2495 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2496 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2497 return 1;
d102d9df 2498 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2499 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2500 return 0;
2501 ctx->split_send_fragment = larg;
2502 return 1;
2503 case SSL_CTRL_SET_MAX_PIPELINES:
2504 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2505 return 0;
2506 ctx->max_pipelines = larg;
07077415 2507 return 1;
0f113f3e
MC		 2508 case SSL_CTRL_CERT_FLAGS:
2509 return (ctx->cert->cert_flags |= larg);
2510 case SSL_CTRL_CLEAR_CERT_FLAGS:
2511 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2512 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2513 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2514 && ssl_set_version_bound(ctx->method->version, (int)larg,
2515 &ctx->min_proto_version);
3edabd3c
CH		 2516 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2517 return ctx->min_proto_version;
7946ab33 2518 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2519 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2520 && ssl_set_version_bound(ctx->method->version, (int)larg,
2521 &ctx->max_proto_version);
3edabd3c
CH		 2522 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2523 return ctx->max_proto_version;
0f113f3e 2524 default:
26a7d938 2525 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2526 }
2527}
2528
2529long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2530{
2531 switch (cmd) {
2532 case SSL_CTRL_SET_MSG_CALLBACK:
2533 ctx->msg_callback = (void (*)
2534 (int write_p, int version, int content_type,
2535 const void *buf, size_t len, SSL *ssl,
2536 void *arg))(fp);
2537 return 1;
2538
2539 default:
26a7d938 2540 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2541 }
2542}
d3442bc7 2543
ccd86b68 2544int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2545{
90d9e49a
DSH		 2546 if (a->id > b->id)
2547 return 1;
2548 if (a->id < b->id)
2549 return -1;
2550 return 0;
0f113f3e
MC		 2551}
2552
2553int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2554 const SSL_CIPHER *const *bp)
2555{
90d9e49a
DSH		 2556 if ((*ap)->id > (*bp)->id)
2557 return 1;
2558 if ((*ap)->id < (*bp)->id)
2559 return -1;
2560 return 0;
0f113f3e 2561}
d02b48c6 2562
4f43d0e7 2563/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2564 * preference */
0821bcd4 2565STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2566{
2567 if (s != NULL) {
2568 if (s->cipher_list != NULL) {
26a7d938 2569 return s->cipher_list;
0f113f3e 2570 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2571 return s->ctx->cipher_list;
0f113f3e
MC		 2572 }
2573 }
26a7d938 2574 return NULL;
0f113f3e
MC		 2575}
2576
831eef2c
NM		 2577STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2578{
eee2a6a7 2579 if ((s == NULL) || !s->server)
831eef2c 2580 return NULL;
eee2a6a7 2581 return s->peer_ciphers;
831eef2c
NM		 2582}
2583
8b8e5bed 2584STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2585{
2586 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2587 int i;
1d0c08b4 2588
0f113f3e
MC		 2589 ciphers = SSL_get_ciphers(s);
2590 if (!ciphers)
2591 return NULL;
1d0c08b4
MC		 2592 if (!ssl_set_client_disabled(s))
2593 return NULL;
0f113f3e
MC		 2594 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2595 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2596 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2597 if (!sk)
2598 sk = sk_SSL_CIPHER_new_null();
2599 if (!sk)
2600 return NULL;
2601 if (!sk_SSL_CIPHER_push(sk, c)) {
2602 sk_SSL_CIPHER_free(sk);
2603 return NULL;
2604 }
2605 }
2606 }
2607 return sk;
2608}
8b8e5bed 2609
4f43d0e7 2610/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2611 * algorithm id */
f73e07cf 2612STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2613{
2614 if (s != NULL) {
2615 if (s->cipher_list_by_id != NULL) {
26a7d938 2616 return s->cipher_list_by_id;
0f113f3e 2617 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2618 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2619 }
2620 }
26a7d938 2621 return NULL;
0f113f3e 2622}
d02b48c6 2623
4f43d0e7 2624/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2625const char *SSL_get_cipher_list(const SSL *s, int n)
2626{
4a640fb6 2627 const SSL_CIPHER *c;
0f113f3e
MC		 2628 STACK_OF(SSL_CIPHER) *sk;
2629
2630 if (s == NULL)
26a7d938 2631 return NULL;
0f113f3e
MC		 2632 sk = SSL_get_ciphers(s);
2633 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2634 return NULL;
0f113f3e
MC		 2635 c = sk_SSL_CIPHER_value(sk, n);
2636 if (c == NULL)
26a7d938
K		 2637 return NULL;
2638 return c->name;
0f113f3e 2639}
d02b48c6 2640
9d5ac953
KY		 2641/** return a STACK of the ciphers available for the SSL_CTX and in order of
2642 * preference */
2643STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2644{
2645 if (ctx != NULL)
2646 return ctx->cipher_list;
2647 return NULL;
2648}
2649
3c83c5ba
SR		 2650/*
2651 * Distinguish between ciphers controlled by set_ciphersuite() and
2652 * set_cipher_list() when counting.
2653 */
2654static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2655{
2656 int i, num = 0;
2657 const SSL_CIPHER *c;
2658
2659 if (sk == NULL)
2660 return 0;
2661 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2662 c = sk_SSL_CIPHER_value(sk, i);
2663 if (c->min_tls >= TLS1_3_VERSION)
2664 continue;
2665 num++;
2666 }
2667 return num;
2668}
2669
25f923dd 2670/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2671int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2672{
2673 STACK_OF(SSL_CIPHER) *sk;
2674
f865b081
MC		 2675 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2676 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2677 ctx->cert);
0f113f3e
MC		 2678 /*
2679 * ssl_create_cipher_list may return an empty stack if it was unable to
2680 * find a cipher matching the given rule string (for example if the rule
2681 * string specifies a cipher which has been disabled). This is not an
2682 * error as far as ssl_create_cipher_list is concerned, and hence
2683 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2684 */
2685 if (sk == NULL)
2686 return 0;
3c83c5ba 2687 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2688 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2689 return 0;
2690 }
2691 return 1;
2692}
d02b48c6 2693
4f43d0e7 2694/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2695int SSL_set_cipher_list(SSL *s, const char *str)
2696{
2697 STACK_OF(SSL_CIPHER) *sk;
2698
f865b081
MC		 2699 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2700 &s->cipher_list, &s->cipher_list_by_id, str,
2701 s->cert);
0f113f3e
MC		 2702 /* see comment in SSL_CTX_set_cipher_list */
2703 if (sk == NULL)
2704 return 0;
3c83c5ba 2705 else if (cipher_list_tls12_num(sk) == 0) {
0f113f3e
MC		 2706 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2707 return 0;
2708 }
2709 return 1;
2710}
d02b48c6 2711
a216df59 2712char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 2713{
2714 char *p;
a216df59 2715 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 2716 const SSL_CIPHER *c;
0f113f3e
MC		 2717 int i;
2718
a216df59 2719 if (!s->server
eee2a6a7 2720 || s->peer_ciphers == NULL
a216df59 2721 || size < 2)
26a7d938 2722 return NULL;
0f113f3e
MC		 2723
2724 p = buf;
eee2a6a7 2725 clntsk = s->peer_ciphers;
a216df59
MC		 2726 srvrsk = SSL_get_ciphers(s);
2727 if (clntsk == NULL || srvrsk == NULL)
2728 return NULL;
0f113f3e 2729
a216df59 2730 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 2731 return NULL;
2732
a216df59 2733 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 2734 int n;
2735
a216df59
MC		 2736 c = sk_SSL_CIPHER_value(clntsk, i);
2737 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2738 continue;
2739
0f113f3e 2740 n = strlen(c->name);
a216df59 2741 if (n + 1 > size) {
0f113f3e
MC		 2742 if (p != buf)
2743 --p;
2744 *p = '\0';
2745 return buf;
2746 }
4cacc9d5 2747 strcpy(p, c->name);
0f113f3e
MC		 2748 p += n;
2749 *(p++) = ':';
a216df59 2750 size -= n + 1;
0f113f3e
MC		 2751 }
2752 p[-1] = '\0';
26a7d938 2753 return buf;
0f113f3e
MC		 2754}
2755
52b8dad8 2756/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2757 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2758 */
2759
f1fd4544 2760const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2761{
2762 if (type != TLSEXT_NAMETYPE_host_name)
2763 return NULL;
a13c20f6 2764
1c4aa31d 2765 /*
328a0547
BK		 2766 * SNI is not negotiated in pre-TLS-1.3 resumption flows, so fake up an
2767 * SNI value to return if we are resuming/resumed. N.B. that we still
2768 * call the relevant callbacks for such resumption flows, and callbacks
2769 * might error out if there is not a SNI value available.
1c4aa31d 2770 */
328a0547
BK		 2771 if (s->hit)
2772 return s->session->ext.hostname;
2773 return s->ext.hostname;
0f113f3e 2774}
ed3883d2 2775
f1fd4544 2776int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2777{
2778 if (s->session
aff8c126
RS		 2779 && (!s->ext.hostname ? s->session->
2780 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2781 return TLSEXT_NAMETYPE_host_name;
2782 return -1;
2783}
ee2ffc27 2784
0f113f3e
MC		 2785/*
2786 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2787 * expected that this function is called from the callback set by
0f113f3e
MC		 2788 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2789 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2790 * not included in the length. A byte string of length 0 is invalid. No byte
2791 * string may be truncated. The current, but experimental algorithm for
2792 * selecting the protocol is: 1) If the server doesn't support NPN then this
2793 * is indicated to the callback. In this case, the client application has to
2794 * abort the connection or have a default application level protocol. 2) If
2795 * the server supports NPN, but advertises an empty list then the client
f430ba31 2796 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2797 * fallback case was enacted. 3) Otherwise, the client finds the first
2798 * protocol in the server's list that it supports and selects this protocol.
2799 * This is because it's assumed that the server has better information about
2800 * which protocol a client should use. 4) If the client doesn't support any
2801 * of the server's advertised protocols, then this is treated the same as
2802 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2803 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2804 */
0f113f3e
MC		 2805int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2806 const unsigned char *server,
2807 unsigned int server_len,
a230b26e 2808 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2809{
2810 unsigned int i, j;
2811 const unsigned char *result;
2812 int status = OPENSSL_NPN_UNSUPPORTED;
2813
2814 /*
2815 * For each protocol in server preference order, see if we support it.
2816 */
2817 for (i = 0; i < server_len;) {
2818 for (j = 0; j < client_len;) {
2819 if (server[i] == client[j] &&
2820 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2821 /* We found a match */
2822 result = &server[i];
2823 status = OPENSSL_NPN_NEGOTIATED;
2824 goto found;
2825 }
2826 j += client[j];
2827 j++;
2828 }
2829 i += server[i];
2830 i++;
2831 }
2832
2833 /* There's no overlap between our protocols and the server's list. */
2834 result = client;
2835 status = OPENSSL_NPN_NO_OVERLAP;
2836
2837 found:
2838 *out = (unsigned char *)result + 1;
2839 *outlen = result[0];
2840 return status;
2841}
ee2ffc27 2842
e481f9b9 2843#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2844/*
2845 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2846 * client's requested protocol for this connection and returns 0. If the
2847 * client didn't request any protocol, then *data is set to NULL. Note that
2848 * the client can request any protocol it chooses. The value returned from
2849 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2850 * provided by the callback.
2851 */
0f113f3e
MC		 2852void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2853 unsigned *len)
2854{
aff8c126 2855 *data = s->ext.npn;
12a765a5 2856 if (*data == NULL) {
0f113f3e
MC		 2857 *len = 0;
2858 } else {
aff8c126 2859 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2860 }
2861}
2862
2863/*
aff8c126 2864 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2865 * a TLS server needs a list of supported protocols for Next Protocol
2866 * Negotiation. The returned list must be in wire format. The list is
2867 * returned by setting |out| to point to it and |outlen| to its length. This
2868 * memory will not be modified, but one should assume that the SSL* keeps a
2869 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2870 * wishes to advertise. Otherwise, no such extension will be included in the
2871 * ServerHello.
2872 */
aff8c126 2873void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2874 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2875 void *arg)
0f113f3e 2876{
aff8c126
RS		 2877 ctx->ext.npn_advertised_cb = cb;
2878 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2879}
2880
2881/*
2882 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2883 * client needs to select a protocol from the server's provided list. |out|
2884 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2885 * The length of the protocol name must be written into |outlen|. The
2886 * server's advertised protocols are provided in |in| and |inlen|. The
2887 * callback can assume that |in| is syntactically valid. The client must
2888 * select a protocol. It is fatal to the connection if this callback returns
2889 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2890 */
aff8c126 2891void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2892 SSL_CTX_npn_select_cb_func cb,
aff8c126 2893 void *arg)
0f113f3e 2894{
aff8c126
RS		 2895 ctx->ext.npn_select_cb = cb;
2896 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2897}
e481f9b9 2898#endif
a398f821 2899
0f113f3e
MC		 2900/*
2901 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2902 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2903 * length-prefixed strings). Returns 0 on success.
2904 */
2905int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2906 unsigned int protos_len)
0f113f3e 2907{
aff8c126
RS		 2908 OPENSSL_free(ctx->ext.alpn);
2909 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2910 if (ctx->ext.alpn == NULL) {
72e9be3d 2911 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2912 return 1;
72e9be3d 2913 }
aff8c126 2914 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2915
2916 return 0;
2917}
2918
2919/*
2920 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2921 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2922 * length-prefixed strings). Returns 0 on success.
2923 */
2924int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2925 unsigned int protos_len)
0f113f3e 2926{
aff8c126
RS		 2927 OPENSSL_free(ssl->ext.alpn);
2928 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2929 if (ssl->ext.alpn == NULL) {
72e9be3d 2930 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2931 return 1;
72e9be3d 2932 }
aff8c126 2933 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2934
2935 return 0;
2936}
2937
2938/*
2939 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2940 * called during ClientHello processing in order to select an ALPN protocol
2941 * from the client's list of offered protocols.
2942 */
2943void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2944 SSL_CTX_alpn_select_cb_func cb,
2945 void *arg)
0f113f3e 2946{
aff8c126
RS		 2947 ctx->ext.alpn_select_cb = cb;
2948 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2949}
2950
2951/*
69687aa8
F		 2952 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2953 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2954 * (not including the leading length-prefix byte). If the server didn't
2955 * respond with a negotiated protocol then |*len| will be zero.
2956 */
6f017a8f 2957void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2958 unsigned int *len)
0f113f3e 2959{
555cbb32 2960 *data = ssl->s3.alpn_selected;
0f113f3e
MC		 2961 if (*data == NULL)
2962 *len = 0;
2963 else
555cbb32 2964 *len = (unsigned int)ssl->s3.alpn_selected_len;
0f113f3e
MC		 2965}
2966
74b4b494 2967int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2968 const char *label, size_t llen,
23cec1f4 2969 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2970 int use_context)
2971{
c8a18468 2972 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2973 return -1;
e0af0405 2974
0f113f3e 2975 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2976 llen, context,
2977 contextlen, use_context);
0f113f3e 2978}
e0af0405 2979
b38ede80
TT		 2980int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2981 const char *label, size_t llen,
2982 const unsigned char *context,
2983 size_t contextlen)
2984{
2985 if (s->version != TLS1_3_VERSION)
2986 return 0;
2987
2988 return tls13_export_keying_material_early(s, out, olen, label, llen,
2989 context, contextlen);
2990}
2991
3c1d6bbc 2992static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2993{
bd5d27c1 2994 const unsigned char *session_id = a->session_id;
0f113f3e 2995 unsigned long l;
bd5d27c1
DB		 2996 unsigned char tmp_storage[4];
2997
2998 if (a->session_id_length < sizeof(tmp_storage)) {
2999 memset(tmp_storage, 0, sizeof(tmp_storage));
3000 memcpy(tmp_storage, a->session_id, a->session_id_length);
3001 session_id = tmp_storage;
3002 }
0f113f3e
MC		 3003
3004 l = (unsigned long)
bd5d27c1
DB		 3005 ((unsigned long)session_id[0]) |
3006 ((unsigned long)session_id[1] << 8L) |
3007 ((unsigned long)session_id[2] << 16L) |
3008 ((unsigned long)session_id[3] << 24L);
26a7d938 3009 return l;
0f113f3e
MC		 3010}
3011
3012/*
3013 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 3014 * coarser function than this one) is changed, ensure
0f113f3e
MC		 3015 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3016 * being able to construct an SSL_SESSION that will collide with any existing
3017 * session with a matching session ID.
3018 */
3019static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3020{
3021 if (a->ssl_version != b->ssl_version)
208fb891 3022 return 1;
0f113f3e 3023 if (a->session_id_length != b->session_id_length)
208fb891 3024 return 1;
26a7d938 3025 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 3026}
3027
3028/*
3029 * These wrapper functions should remain rather than redeclaring
d0fa136c 3030 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 3031 * variable. The reason is that the functions aren't static, they're exposed
3032 * via ssl.h.
3033 */
97b17195 3034
4ebb342f 3035SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 3036{
3037 SSL_CTX *ret = NULL;
3038
3039 if (meth == NULL) {
3040 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 3041 return NULL;
0f113f3e
MC		 3042 }
3043
0fc32b07
MC		 3044 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3045 return NULL;
7fa792d1 3046
0f113f3e
MC		 3047 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3048 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3049 goto err;
3050 }
b51bce94 3051 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 3052 if (ret == NULL)
3053 goto err;
3054
0f113f3e 3055 ret->method = meth;
7946ab33
KR		 3056 ret->min_proto_version = 0;
3057 ret->max_proto_version = 0;
693cf80c 3058 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 3059 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3060 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 3061 /* We take the system default. */
0f113f3e 3062 ret->session_timeout = meth->get_timeout();
0f113f3e 3063 ret->references = 1;
16203f7b
AG		 3064 ret->lock = CRYPTO_THREAD_lock_new();
3065 if (ret->lock == NULL) {
3066 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3067 OPENSSL_free(ret);
3068 return NULL;
3069 }
0f113f3e 3070 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 3071 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 3072 if ((ret->cert = ssl_cert_new()) == NULL)
3073 goto err;
3074
62d0577e 3075 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 3076 if (ret->sessions == NULL)
3077 goto err;
3078 ret->cert_store = X509_STORE_new();
3079 if (ret->cert_store == NULL)
3080 goto err;
ed29e82a
RP		 3081#ifndef OPENSSL_NO_CT
3082 ret->ctlog_store = CTLOG_STORE_new();
3083 if (ret->ctlog_store == NULL)
3084 goto err;
3085#endif
f865b081 3086
5d120511 3087 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
f865b081
MC		 3088 goto err;
3089
61986d32 3090 if (!ssl_create_cipher_list(ret->method,
f865b081 3091 ret->tls13_ciphersuites,
a230b26e 3092 &ret->cipher_list, &ret->cipher_list_by_id,
5d120511 3093 OSSL_default_cipher_list(), ret->cert)
a230b26e 3094 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 3095 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3096 goto err2;
3097 }
3098
3099 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 3100 if (ret->param == NULL)
0f113f3e
MC		 3101 goto err;
3102
3103 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3104 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3105 goto err2;
3106 }
3107 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3108 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3109 goto err2;
3110 }
3111
fa7c2637 3112 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 3113 goto err;
3114
98732979
MC		 3115 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3116 goto err;
3117
25a807bc
F		 3118 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3119 goto err;
0f113f3e 3120
4bfb96f2
TS		 3121 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3122 goto err;
3123
0f113f3e
MC		 3124 /* No compression for DTLS */
3125 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3126 ret->comp_methods = SSL_COMP_get_compression_methods();
3127
3128 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 3129 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 3130
4e2e1ec9 3131 /* Setup RFC5077 ticket keys */
aff8c126
RS		 3132 if ((RAND_bytes(ret->ext.tick_key_name,
3133 sizeof(ret->ext.tick_key_name)) <= 0)
4cffafe9 3134 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
4bfb96f2 3135 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
4cffafe9 3136 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
4bfb96f2 3137 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
0f113f3e 3138 ret->options |= SSL_OP_NO_TICKET;
6434abbf 3139
4cffafe9 3140 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
43054d3d
MC		 3141 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3142 goto err;
3143
edc032b5 3144#ifndef OPENSSL_NO_SRP
61986d32 3145 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 3146 goto err;
edc032b5 3147#endif
4db9677b 3148#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 3149# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3150# define eng_strx(x) #x
3151# define eng_str(x) eng_strx(x)
3152 /* Use specific client engine automatically... ignore errors */
3153 {
3154 ENGINE *eng;
3155 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3156 if (!eng) {
3157 ERR_clear_error();
3158 ENGINE_load_builtin_engines();
3159 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3160 }
3161 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3162 ERR_clear_error();
3163 }
3164# endif
3165#endif
3166 /*
3167 * Default is to connect to non-RI servers. When RI is more widely
3168 * deployed might change this.
3169 */
3170 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3171 /*
3172 * Disable compression by default to prevent CRIME. Applications can
3173 * re-enable compression by configuring
3174 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3175 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3176 * middlebox compatibility by default. This may be disabled by default in
3177 * a later OpenSSL version.
dc5744cb 3178 */
a5816a5a 3179 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3180
aff8c126 3181 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3182
bfa9a9af 3183 /*
c39e4048
BK		 3184 * We cannot usefully set a default max_early_data here (which gets
3185 * propagated in SSL_new(), for the following reason: setting the
3186 * SSL field causes tls_construct_stoc_early_data() to tell the
3187 * client that early data will be accepted when constructing a TLS 1.3
3188 * session ticket, and the client will accordingly send us early data
3189 * when using that ticket (if the client has early data to send).
3190 * However, in order for the early data to actually be consumed by
3191 * the application, the application must also have calls to
3192 * SSL_read_early_data(); otherwise we'll just skip past the early data
3193 * and ignore it. So, since the application must add calls to
3194 * SSL_read_early_data(), we also require them to add
3195 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3196 * eliminating the bandwidth-wasting early data in the case described
3197 * above.
bfa9a9af 3198 */
c39e4048 3199 ret->max_early_data = 0;
bfa9a9af 3200
4e8548e8
MC		 3201 /*
3202 * Default recv_max_early_data is a fully loaded single record. Could be
3203 * split across multiple records in practice. We set this differently to
3204 * max_early_data so that, in the default case, we do not advertise any
3205 * support for early_data, but if a client were to send us some (e.g.
3206 * because of an old, stale ticket) then we will tolerate it and skip over
3207 * it.
3208 */
3209 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3210
36ff232c
MC		 3211 /* By default we send two session tickets automatically in TLSv1.3 */
3212 ret->num_tickets = 2;
9d0a8bb7 3213
8a5ed9dc
TM		 3214 ssl_ctx_system_config(ret);
3215
16203f7b 3216 return ret;
0f113f3e
MC		 3217 err:
3218 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3219 err2:
e0e920b1 3220 SSL_CTX_free(ret);
16203f7b 3221 return NULL;
0f113f3e 3222}
d02b48c6 3223
c5ebfcab 3224int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3225{
16203f7b 3226 int i;
c5ebfcab 3227
2f545ae4 3228 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3229 return 0;
3230
3231 REF_PRINT_COUNT("SSL_CTX", ctx);
3232 REF_ASSERT_ISNT(i < 2);
3233 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3234}
3235
4f43d0e7 3236void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3237{
3238 int i;
d02b48c6 3239
0f113f3e
MC		 3240 if (a == NULL)
3241 return;
d02b48c6 3242
2f545ae4 3243 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3244 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3245 if (i > 0)
3246 return;
f3f1cf84 3247 REF_ASSERT_ISNT(i < 0);
0f113f3e 3248
222561fe 3249 X509_VERIFY_PARAM_free(a->param);
919ba009 3250 dane_ctx_final(&a->dane);
0f113f3e
MC		 3251
3252 /*
3253 * Free internal session cache. However: the remove_cb() may reference
3254 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3255 * after the sessions were flushed.
3256 * As the ex_data handling routines might also touch the session cache,
3257 * the most secure solution seems to be: empty (flush) the cache, then
3258 * free ex_data, then finally free the cache.
3259 * (See ticket [openssl.org #212].)
3260 */
3261 if (a->sessions != NULL)
3262 SSL_CTX_flush_sessions(a, 0);
3263
3264 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3265 lh_SSL_SESSION_free(a->sessions);
222561fe 3266 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3267#ifndef OPENSSL_NO_CT
3268 CTLOG_STORE_free(a->ctlog_store);
3269#endif
25aaa98a
RS		 3270 sk_SSL_CIPHER_free(a->cipher_list);
3271 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3272 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3273 ssl_cert_free(a->cert);
fa7c2637 3274 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
98732979 3275 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
222561fe 3276 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3277 a->comp_methods = NULL;
e783bae2 3278#ifndef OPENSSL_NO_SRTP
25aaa98a 3279 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3280#endif
edc032b5 3281#ifndef OPENSSL_NO_SRP
0f113f3e 3282 SSL_CTX_SRP_CTX_free(a);
edc032b5 3283#endif
bdfe932d 3284#ifndef OPENSSL_NO_ENGINE
7c96dbcd 3285 ENGINE_finish(a->client_cert_engine);
ddac1974 3286#endif
8671b898 3287
e481f9b9 3288#ifndef OPENSSL_NO_EC
aff8c126 3289 OPENSSL_free(a->ext.ecpointformats);
8671b898 3290#endif
187753e0 3291 OPENSSL_free(a->ext.supportedgroups);
aff8c126 3292 OPENSSL_free(a->ext.alpn);
4bfb96f2 3293 OPENSSL_secure_free(a->ext.secure);
8671b898 3294
16203f7b
AG		 3295 CRYPTO_THREAD_lock_free(a->lock);
3296
0f113f3e
MC		 3297 OPENSSL_free(a);
3298}
d02b48c6 3299
3ae76679 3300void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3301{
3302 ctx->default_passwd_callback = cb;
3303}
3304
3305void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3306{
3307 ctx->default_passwd_callback_userdata = u;
3308}
3309
0c452abc
CH		 3310pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3311{
3312 return ctx->default_passwd_callback;
3313}
3314
3315void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3316{
3317 return ctx->default_passwd_callback_userdata;
3318}
3319
a974e64a
MC		 3320void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3321{
3322 s->default_passwd_callback = cb;
3323}
3324
3325void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3326{
3327 s->default_passwd_callback_userdata = u;
3328}
3329
0c452abc
CH		 3330pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3331{
3332 return s->default_passwd_callback;
3333}
3334
3335void *SSL_get_default_passwd_cb_userdata(SSL *s)
3336{
3337 return s->default_passwd_callback_userdata;
3338}
3339
0f113f3e
MC		 3340void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3341 int (*cb) (X509_STORE_CTX *, void *),
3342 void *arg)
3343{
3344 ctx->app_verify_callback = cb;
3345 ctx->app_verify_arg = arg;
3346}
3347
3348void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3349 int (*cb) (int, X509_STORE_CTX *))
3350{
3351 ctx->verify_mode = mode;
3352 ctx->default_verify_callback = cb;
3353}
3354
3355void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3356{
3357 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3358}
3359
a230b26e 3360void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3361{
3362 ssl_cert_set_cert_cb(c->cert, cb, arg);
3363}
3364
3365void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3366{
3367 ssl_cert_set_cert_cb(s->cert, cb, arg);
3368}
18d71588 3369
2cf28d61 3370void ssl_set_masks(SSL *s)
0f113f3e 3371{
6383d316 3372 CERT *c = s->cert;
555cbb32 3373 uint32_t *pvalid = s->s3.tmp.valid_flags;
bc71f910 3374 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3375 unsigned long mask_k, mask_a;
10bf4fc2 3376#ifndef OPENSSL_NO_EC
361a1191 3377 int have_ecc_cert, ecdsa_ok;
14536c8c 3378#endif
0f113f3e
MC		 3379 if (c == NULL)
3380 return;
d02b48c6 3381
bc36ee62 3382#ifndef OPENSSL_NO_DH
0f113f3e 3383 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3384#else
361a1191 3385 dh_tmp = 0;
d02b48c6
RE		 3386#endif
3387
d0ff28f8 3388 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3389 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3390 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3391#ifndef OPENSSL_NO_EC
6383d316 3392 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3393#endif
0f113f3e
MC		 3394 mask_k = 0;
3395 mask_a = 0;
0e1dba93 3396
77359d22
RL		 3397 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3398 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e 3399
2a9b9654 3400#ifndef OPENSSL_NO_GOST
4020c0b3 3401 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3402 mask_k |= SSL_kGOST;
3403 mask_a |= SSL_aGOST12;
3404 }
4020c0b3 3405 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3406 mask_k |= SSL_kGOST;
3407 mask_a |= SSL_aGOST12;
3408 }
4020c0b3 3409 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3410 mask_k |= SSL_kGOST;
3411 mask_a |= SSL_aGOST01;
3412 }
2a9b9654 3413#endif
0f113f3e 3414
361a1191 3415 if (rsa_enc)
0f113f3e 3416 mask_k |= SSL_kRSA;
d02b48c6 3417
0f113f3e
MC		 3418 if (dh_tmp)
3419 mask_k |= SSL_kDHE;
d02b48c6 3420
6aaa29fb
DSH		 3421 /*
3422 * If we only have an RSA-PSS certificate allow RSA authentication
3423 * if TLS 1.2 and peer supports it.
3424 */
3425
3426 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3427 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3428 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3429 mask_a |= SSL_aRSA;
d02b48c6 3430
0f113f3e
MC		 3431 if (dsa_sign) {
3432 mask_a |= SSL_aDSS;
0f113f3e 3433 }
d02b48c6 3434
0f113f3e 3435 mask_a |= SSL_aNULL;
d02b48c6 3436
0f113f3e
MC		 3437 /*
3438 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3439 * depending on the key usage extension.
3440 */
14536c8c 3441#ifndef OPENSSL_NO_EC
0f113f3e 3442 if (have_ecc_cert) {
a8d8e06b 3443 uint32_t ex_kusage;
4020c0b3 3444 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3445 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3446 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3447 ecdsa_ok = 0;
c7c46256 3448 if (ecdsa_ok)
0f113f3e 3449 mask_a |= SSL_aECDSA;
0f113f3e 3450 }
b2021556
DSH		 3451 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3452 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3453 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3454 && TLS1_get_version(s) == TLS1_2_VERSION)
3455 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3456
3457 /* Allow Ed448 for TLS 1.2 if peer supports it */
3458 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3459 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3460 && TLS1_get_version(s) == TLS1_2_VERSION)
3461 mask_a |= SSL_aECDSA;
14536c8c 3462#endif
ea262260 3463
10bf4fc2 3464#ifndef OPENSSL_NO_EC
fe6ef247 3465 mask_k |= SSL_kECDHE;
ea262260 3466#endif
ddac1974
NL		 3467
3468#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3469 mask_k |= SSL_kPSK;
3470 mask_a |= SSL_aPSK;
526f94ad
DSH		 3471 if (mask_k & SSL_kRSA)
3472 mask_k |= SSL_kRSAPSK;
3473 if (mask_k & SSL_kDHE)
3474 mask_k |= SSL_kDHEPSK;
3475 if (mask_k & SSL_kECDHE)
3476 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3477#endif
3478
555cbb32
TS		 3479 s->s3.tmp.mask_k = mask_k;
3480 s->s3.tmp.mask_a = mask_a;
0f113f3e 3481}
d02b48c6 3482
ef236ec3
DSH		 3483#ifndef OPENSSL_NO_EC
3484
a2f9200f 3485int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3486{
555cbb32 3487 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3488 /* key usage, if present, must allow signing */
ce0c1f2b 3489 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3490 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3491 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3492 return 0;
3493 }
3494 }
0f113f3e
MC		 3495 return 1; /* all checks are ok */
3496}
ea262260 3497
ef236ec3
DSH		 3498#endif
3499
a398f821 3500int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3501 size_t *serverinfo_length)
3502{
555cbb32 3503 CERT_PKEY *cpk = s->s3.tmp.cert;
0f113f3e
MC		 3504 *serverinfo_length = 0;
3505
a497cf25 3506 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3507 return 0;
3508
a497cf25
DSH		 3509 *serverinfo = cpk->serverinfo;
3510 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3511 return 1;
3512}
0f113f3e
MC		 3513
3514void ssl_update_cache(SSL *s, int mode)
3515{
3516 int i;
3517
3518 /*
3519 * If the session_id_length is 0, we are not supposed to cache it, and it
3520 * would be rather hard to do anyway :-)
3521 */
3522 if (s->session->session_id_length == 0)
3523 return;
3524
d316cdcf
BK		 3525 /*
3526 * If sid_ctx_length is 0 there is no specific application context
3527 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 3528 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3529 * indication that this is actually a session for the proper application
3530 * context, and the *handshake* will fail, not just the resumption attempt.
3531 * Do not cache (on the server) these sessions that are not resumable
3532 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 3533 */
c4fa1f7f 3534 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 3535 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3536 return;
3537
0f113f3e 3538 i = s->session_ctx->session_cache_mode;
5d61491c 3539 if ((i & mode) != 0
ee94ec2e
MC		 3540 && (!s->hit || SSL_IS_TLS13(s))) {
3541 /*
3542 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 3543 * normally don't do this because by default it's a full stateless ticket
3544 * with only a dummy session id so there is no reason to cache it,
3545 * unless:
ee94ec2e
MC		 3546 * - we are doing early_data, in which case we cache so that we can
3547 * detect replays
3548 * - the application has set a remove_session_cb so needs to know about
3549 * session timeout events
6cc0b3c2 3550 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 3551 */
3552 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3553 && (!SSL_IS_TLS13(s)
3554 || !s->server
5d263fb7
MC		 3555 || (s->max_early_data > 0
3556 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 3557 || s->session_ctx->remove_session_cb != NULL
3558 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 3559 SSL_CTX_add_session(s->session_ctx, s->session);
3560
3561 /*
3562 * Add the session to the external cache. We do this even in server side
3563 * TLSv1.3 without early data because some applications just want to
3564 * know about the creation of a session and aren't doing a full cache.
3565 */
3566 if (s->session_ctx->new_session_cb != NULL) {
3567 SSL_SESSION_up_ref(s->session);
3568 if (!s->session_ctx->new_session_cb(s, s->session))
3569 SSL_SESSION_free(s->session);
3570 }
0f113f3e
MC		 3571 }
3572
3573 /* auto flush every 255 connections */
3574 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 3575 TSAN_QUALIFIER int *stat;
1fcb4e4d
BK		 3576 if (mode & SSL_SESS_CACHE_CLIENT)
3577 stat = &s->session_ctx->stats.sess_connect_good;
3578 else
3579 stat = &s->session_ctx->stats.sess_accept_good;
9ef9088c 3580 if ((tsan_load(stat) & 0xff) == 0xff)
0f113f3e 3581 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3582 }
3583}
d02b48c6 3584
3499327b 3585const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
0f113f3e
MC		 3586{
3587 return ctx->method;
3588}
ba168244 3589
3499327b 3590const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
0f113f3e 3591{
26a7d938 3592 return s->method;
0f113f3e 3593}
d02b48c6 3594
4ebb342f 3595int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3596{
0f113f3e
MC		 3597 int ret = 1;
3598
3599 if (s->method != meth) {
919ba009 3600 const SSL_METHOD *sm = s->method;
a230b26e 3601 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3602
919ba009 3603 if (sm->version == meth->version)
0f113f3e
MC		 3604 s->method = meth;
3605 else {
919ba009 3606 sm->ssl_free(s);
0f113f3e
MC		 3607 s->method = meth;
3608 ret = s->method->ssl_new(s);
3609 }
3610
919ba009 3611 if (hf == sm->ssl_connect)
0f113f3e 3612 s->handshake_func = meth->ssl_connect;
919ba009 3613 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3614 s->handshake_func = meth->ssl_accept;
3615 }
26a7d938 3616 return ret;
0f113f3e
MC		 3617}
3618
3619int SSL_get_error(const SSL *s, int i)
3620{
3621 int reason;
3622 unsigned long l;
3623 BIO *bio;
3624
3625 if (i > 0)
26a7d938 3626 return SSL_ERROR_NONE;
0f113f3e
MC		 3627
3628 /*
3629 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3630 * where we do encode the error
3631 */
3632 if ((l = ERR_peek_error()) != 0) {
3633 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3634 return SSL_ERROR_SYSCALL;
0f113f3e 3635 else
26a7d938 3636 return SSL_ERROR_SSL;
0f113f3e
MC		 3637 }
3638
8051ab2b
MC		 3639 if (SSL_want_read(s)) {
3640 bio = SSL_get_rbio(s);
3641 if (BIO_should_read(bio))
26a7d938 3642 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3643 else if (BIO_should_write(bio))
3644 /*
3645 * This one doesn't make too much sense ... We never try to write
3646 * to the rbio, and an application program where rbio and wbio
3647 * are separate couldn't even know what it should wait for.
3648 * However if we ever set s->rwstate incorrectly (so that we have
3649 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3650 * wbio *are* the same, this test works around that bug; so it
3651 * might be safer to keep it.
3652 */
26a7d938 3653 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3654 else if (BIO_should_io_special(bio)) {
3655 reason = BIO_get_retry_reason(bio);
3656 if (reason == BIO_RR_CONNECT)
26a7d938 3657 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3658 else if (reason == BIO_RR_ACCEPT)
26a7d938 3659 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3660 else
26a7d938 3661 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3662 }
8051ab2b 3663 }
0f113f3e 3664
8051ab2b 3665 if (SSL_want_write(s)) {
69687aa8 3666 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3667 bio = s->wbio;
3668 if (BIO_should_write(bio))
26a7d938 3669 return SSL_ERROR_WANT_WRITE;
8051ab2b 3670 else if (BIO_should_read(bio))
2e7dc7cd 3671 /*
8051ab2b 3672 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3673 */
26a7d938 3674 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3675 else if (BIO_should_io_special(bio)) {
3676 reason = BIO_get_retry_reason(bio);
3677 if (reason == BIO_RR_CONNECT)
26a7d938 3678 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3679 else if (reason == BIO_RR_ACCEPT)
26a7d938 3680 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3681 else
26a7d938 3682 return SSL_ERROR_SYSCALL;
0f113f3e 3683 }
07bbc92c 3684 }
6b1bb98f 3685 if (SSL_want_x509_lookup(s))
26a7d938 3686 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3687 if (SSL_want_async(s))
8051ab2b 3688 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3689 if (SSL_want_async_job(s))
8051ab2b 3690 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3691 if (SSL_want_client_hello_cb(s))
3692 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3693
3694 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
555cbb32 3695 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3696 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3697
26a7d938 3698 return SSL_ERROR_SYSCALL;
0f113f3e 3699}
d02b48c6 3700
add2f5ca
MC		 3701static int ssl_do_handshake_intern(void *vargs)
3702{
3703 struct ssl_async_args *args;
3704 SSL *s;
3705
3706 args = (struct ssl_async_args *)vargs;
3707 s = args->s;
3708
3709 return s->handshake_func(s);
3710}
3711
4f43d0e7 3712int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3713{
3714 int ret = 1;
3715
3716 if (s->handshake_func == NULL) {
3717 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3718 return -1;
0f113f3e
MC		 3719 }
3720
3eaa4170 3721 ossl_statem_check_finish_init(s, -1);
49e7fe12 3722
c7f47786 3723 s->method->ssl_renegotiate_check(s, 0);
0f113f3e
MC		 3724
3725 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3726 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3727 struct ssl_async_args args;
3728
3729 args.s = s;
3730
7fecbf6f 3731 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3732 } else {
3733 ret = s->handshake_func(s);
3734 }
0f113f3e 3735 }
add2f5ca 3736 return ret;
0f113f3e
MC		 3737}
3738
4f43d0e7 3739void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3740{
3741 s->server = 1;
3742 s->shutdown = 0;
fe3a3291 3743 ossl_statem_clear(s);
0f113f3e 3744 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3745 clear_ciphers(s);
0f113f3e 3746}
d02b48c6 3747
4f43d0e7 3748void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3749{
3750 s->server = 0;
3751 s->shutdown = 0;
fe3a3291 3752 ossl_statem_clear(s);
0f113f3e 3753 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3754 clear_ciphers(s);
0f113f3e 3755}
d02b48c6 3756
4f43d0e7 3757int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3758{
3759 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3760 return 0;
0f113f3e 3761}
d02b48c6 3762
41a15c4f 3763int ssl_undefined_void_function(void)
0f113f3e
MC		 3764{
3765 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3766 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3767 return 0;
0f113f3e 3768}
41a15c4f 3769
0821bcd4 3770int ssl_undefined_const_function(const SSL *s)
0f113f3e 3771{
26a7d938 3772 return 0;
0f113f3e 3773}
0821bcd4 3774
2b8fa1d5 3775const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3776{
3777 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3778 return NULL;
0f113f3e 3779}
d02b48c6 3780
3eb2aff4 3781const char *ssl_protocol_to_string(int version)
7d650072 3782{
2abacef1
MC		 3783 switch(version)
3784 {
3785 case TLS1_3_VERSION:
582a17d6 3786 return "TLSv1.3";
2abacef1
MC		 3787
3788 case TLS1_2_VERSION:
7d650072 3789 return "TLSv1.2";
2abacef1
MC		 3790
3791 case TLS1_1_VERSION:
7d650072 3792 return "TLSv1.1";
2abacef1
MC		 3793
3794 case TLS1_VERSION:
ee3a6c64 3795 return "TLSv1";
2abacef1
MC		 3796
3797 case SSL3_VERSION:
7d650072 3798 return "SSLv3";
2abacef1
MC		 3799
3800 case DTLS1_BAD_VER:
7d650072 3801 return "DTLSv0.9";
2abacef1
MC		 3802
3803 case DTLS1_VERSION:
7d650072 3804 return "DTLSv1";
2abacef1
MC		 3805
3806 case DTLS1_2_VERSION:
7d650072 3807 return "DTLSv1.2";
2abacef1
MC		 3808
3809 default:
3810 return "unknown";
3811 }
0f113f3e 3812}
d02b48c6 3813
7d650072
KR		 3814const char *SSL_get_version(const SSL *s)
3815{
3eb2aff4 3816 return ssl_protocol_to_string(s->version);
7d650072
KR		 3817}
3818
98732979 3819static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
0f113f3e
MC		 3820{
3821 STACK_OF(X509_NAME) *sk;
3822 X509_NAME *xn;
98732979
MC		 3823 int i;
3824
3825 if (src == NULL) {
3826 *dst = NULL;
3827 return 1;
3828 }
3829
3830 if ((sk = sk_X509_NAME_new_null()) == NULL)
3831 return 0;
3832 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3833 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3834 if (xn == NULL) {
3835 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3836 return 0;
3837 }
3838 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3839 X509_NAME_free(xn);
3840 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3841 return 0;
3842 }
3843 }
3844 *dst = sk;
3845
3846 return 1;
3847}
3848
3849SSL *SSL_dup(SSL *s)
3850{
0f113f3e
MC		 3851 SSL *ret;
3852 int i;
3853
919ba009
VD		 3854 /* If we're not quiescent, just up_ref! */
3855 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3856 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3857 return s;
3858 }
3859
3860 /*
3861 * Otherwise, copy configuration state, and session if set.
3862 */
0f113f3e 3863 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3864 return NULL;
0f113f3e 3865
0f113f3e 3866 if (s->session != NULL) {
919ba009
VD		 3867 /*
3868 * Arranges to share the same session via up_ref. This "copies"
3869 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3870 */
61986d32 3871 if (!SSL_copy_session_id(ret, s))
17dd65e6 3872 goto err;
0f113f3e
MC		 3873 } else {
3874 /*
3875 * No session has been established yet, so we have to expect that
3876 * s->cert or ret->cert will be changed later -- they should not both
3877 * point to the same object, and thus we can't use
3878 * SSL_copy_session_id.
3879 */
919ba009
VD		 3880 if (!SSL_set_ssl_method(ret, s->method))
3881 goto err;
0f113f3e
MC		 3882
3883 if (s->cert != NULL) {
e0e920b1 3884 ssl_cert_free(ret->cert);
0f113f3e
MC		 3885 ret->cert = ssl_cert_dup(s->cert);
3886 if (ret->cert == NULL)
3887 goto err;
3888 }
3889
348240c6
MC		 3890 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3891 (int)s->sid_ctx_length))
69f68237 3892 goto err;
0f113f3e
MC		 3893 }
3894
9f6b22b8
VD		 3895 if (!ssl_dane_dup(ret, s))
3896 goto err;
919ba009 3897 ret->version = s->version;
0f113f3e
MC		 3898 ret->options = s->options;
3899 ret->mode = s->mode;
3900 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3901 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3902 ret->msg_callback = s->msg_callback;
3903 ret->msg_callback_arg = s->msg_callback_arg;
3904 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3905 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3906 ret->generate_session_id = s->generate_session_id;
3907
3908 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3909
0f113f3e
MC		 3910 /* copy app data, a little dangerous perhaps */
3911 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3912 goto err;
3913
3914 /* setup rbio, and wbio */
3915 if (s->rbio != NULL) {
3916 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3917 goto err;
3918 }
3919 if (s->wbio != NULL) {
3920 if (s->wbio != s->rbio) {
3921 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3922 goto err;
65e2d672
MC		 3923 } else {
3924 BIO_up_ref(ret->rbio);
0f113f3e 3925 ret->wbio = ret->rbio;
65e2d672 3926 }
0f113f3e 3927 }
919ba009 3928
0f113f3e 3929 ret->server = s->server;
919ba009
VD		 3930 if (s->handshake_func) {
3931 if (s->server)
3932 SSL_set_accept_state(ret);
3933 else
3934 SSL_set_connect_state(ret);
3935 }
0f113f3e 3936 ret->shutdown = s->shutdown;
0f113f3e
MC		 3937 ret->hit = s->hit;
3938
a974e64a
MC		 3939 ret->default_passwd_callback = s->default_passwd_callback;
3940 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3941
0f113f3e
MC		 3942 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3943
3944 /* dup the cipher_list and cipher_list_by_id stacks */
3945 if (s->cipher_list != NULL) {
3946 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3947 goto err;
3948 }
3949 if (s->cipher_list_by_id != NULL)
3950 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3951 == NULL)
3952 goto err;
3953
3954 /* Dup the client_CA list */
98732979
MC		 3955 if (!dup_ca_names(&ret->ca_names, s->ca_names)
3956 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
3957 goto err;
3958
66696478 3959 return ret;
0f113f3e 3960
0f113f3e 3961 err:
66696478
RS		 3962 SSL_free(ret);
3963 return NULL;
0f113f3e 3964}
d02b48c6 3965
4f43d0e7 3966void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3967{
3968 if (s->enc_read_ctx != NULL) {
846ec07d 3969 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3970 s->enc_read_ctx = NULL;
3971 }
3972 if (s->enc_write_ctx != NULL) {
846ec07d 3973 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3974 s->enc_write_ctx = NULL;
3975 }
09b6c2ef 3976#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3977 COMP_CTX_free(s->expand);
3978 s->expand = NULL;
3979 COMP_CTX_free(s->compress);
3980 s->compress = NULL;
0f113f3e
MC		 3981#endif
3982}
d02b48c6 3983
0821bcd4 3984X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3985{
3986 if (s->cert != NULL)
26a7d938 3987 return s->cert->key->x509;
0f113f3e 3988 else
26a7d938 3989 return NULL;
0f113f3e 3990}
d02b48c6 3991
a25f9adc 3992EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3993{
3994 if (s->cert != NULL)
26a7d938 3995 return s->cert->key->privatekey;
0f113f3e 3996 else
26a7d938 3997 return NULL;
0f113f3e 3998}
d02b48c6 3999
a25f9adc 4000X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 4001{
4002 if (ctx->cert != NULL)
4003 return ctx->cert->key->x509;
4004 else
4005 return NULL;
4006}
a25f9adc
DSH		 4007
4008EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 4009{
4010 if (ctx->cert != NULL)
4011 return ctx->cert->key->privatekey;
4012 else
4013 return NULL;
4014}
a25f9adc 4015
babb3798 4016const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 4017{
4018 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 4019 return s->session->cipher;
4020 return NULL;
0f113f3e
MC		 4021}
4022
0aed6e44
BK		 4023const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4024{
555cbb32 4025 return s->s3.tmp.new_cipher;
0aed6e44
BK		 4026}
4027
3499327b 4028const COMP_METHOD *SSL_get_current_compression(const SSL *s)
0f113f3e 4029{
9a555706
RS		 4030#ifndef OPENSSL_NO_COMP
4031 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4032#else
4033 return NULL;
4034#endif
0f113f3e 4035}
377dcdba 4036
3499327b 4037const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
0f113f3e 4038{
9a555706
RS		 4039#ifndef OPENSSL_NO_COMP
4040 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4041#else
4042 return NULL;
0f113f3e 4043#endif
9a555706 4044}
0f113f3e 4045
46417569 4046int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 4047{
4048 BIO *bbio;
4049
2e7dc7cd
MC		 4050 if (s->bbio != NULL) {
4051 /* Already buffered. */
4052 return 1;
0f113f3e 4053 }
46417569 4054
2e7dc7cd
MC		 4055 bbio = BIO_new(BIO_f_buffer());
4056 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4057 BIO_free(bbio);
0f113f3e 4058 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 4059 return 0;
0f113f3e 4060 }
2e7dc7cd
MC		 4061 s->bbio = bbio;
4062 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 4063
4064 return 1;
0f113f3e 4065}
413c4f45 4066
b77f3ed1 4067int ssl_free_wbio_buffer(SSL *s)
0f113f3e 4068{
62adbcee 4069 /* callers ensure s is never null */
0f113f3e 4070 if (s->bbio == NULL)
b77f3ed1 4071 return 1;
0f113f3e 4072
2e7dc7cd 4073 s->wbio = BIO_pop(s->wbio);
0f113f3e
MC		 4074 BIO_free(s->bbio);
4075 s->bbio = NULL;
b77f3ed1
MC		 4076
4077 return 1;
0f113f3e
MC		 4078}
4079
4080void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4081{
4082 ctx->quiet_shutdown = mode;
4083}
58964a49 4084
0821bcd4 4085int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 4086{
26a7d938 4087 return ctx->quiet_shutdown;
0f113f3e 4088}
58964a49 4089
0f113f3e
MC		 4090void SSL_set_quiet_shutdown(SSL *s, int mode)
4091{
4092 s->quiet_shutdown = mode;
4093}
58964a49 4094
0821bcd4 4095int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 4096{
26a7d938 4097 return s->quiet_shutdown;
0f113f3e 4098}
58964a49 4099
0f113f3e
MC		 4100void SSL_set_shutdown(SSL *s, int mode)
4101{
4102 s->shutdown = mode;
4103}
58964a49 4104
0821bcd4 4105int SSL_get_shutdown(const SSL *s)
0f113f3e 4106{
6546e9b2 4107 return s->shutdown;
0f113f3e 4108}
58964a49 4109
0821bcd4 4110int SSL_version(const SSL *s)
0f113f3e 4111{
6546e9b2
AG		 4112 return s->version;
4113}
4114
4115int SSL_client_version(const SSL *s)
4116{
4117 return s->client_version;
0f113f3e 4118}
58964a49 4119
0821bcd4 4120SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 4121{
6546e9b2 4122 return ssl->ctx;
0f113f3e
MC		 4123}
4124
4125SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4126{
24a0d393 4127 CERT *new_cert;
0f113f3e
MC		 4128 if (ssl->ctx == ctx)
4129 return ssl->ctx;
0f113f3e 4130 if (ctx == NULL)
222da979 4131 ctx = ssl->session_ctx;
24a0d393
KR		 4132 new_cert = ssl_cert_dup(ctx->cert);
4133 if (new_cert == NULL) {
4134 return NULL;
0f113f3e 4135 }
21181889
MC		 4136
4137 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4138 ssl_cert_free(new_cert);
4139 return NULL;
4140 }
4141
24a0d393
KR		 4142 ssl_cert_free(ssl->cert);
4143 ssl->cert = new_cert;
0f113f3e
MC		 4144
4145 /*
4146 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4147 * so setter APIs must prevent invalid lengths from entering the system.
4148 */
380a522f
MC		 4149 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4150 return NULL;
0f113f3e
MC		 4151
4152 /*
4153 * If the session ID context matches that of the parent SSL_CTX,
4154 * inherit it from the new SSL_CTX as well. If however the context does
4155 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4156 * leave it unchanged.
4157 */
4158 if ((ssl->ctx != NULL) &&
4159 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4160 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4161 ssl->sid_ctx_length = ctx->sid_ctx_length;
4162 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4163 }
4164
16203f7b 4165 SSL_CTX_up_ref(ctx);
a230b26e 4166 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 4167 ssl->ctx = ctx;
4168
16203f7b 4169 return ssl->ctx;
0f113f3e 4170}
ed3883d2 4171
4f43d0e7 4172int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 4173{
26a7d938 4174 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 4175}
58964a49 4176
d84a7b20
MC		 4177int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4178{
4179 X509_LOOKUP *lookup;
4180
4181 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4182 if (lookup == NULL)
4183 return 0;
6dcb100f
RL		 4184
4185 /* We ignore errors, in case the directory doesn't exist */
4186 ERR_set_mark();
4187
d84a7b20
MC		 4188 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4189
6dcb100f 4190 ERR_pop_to_mark();
d84a7b20
MC		 4191
4192 return 1;
4193}
4194
4195int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4196{
4197 X509_LOOKUP *lookup;
4198
4199 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4200 if (lookup == NULL)
4201 return 0;
4202
6dcb100f
RL		 4203 /* We ignore errors, in case the directory doesn't exist */
4204 ERR_set_mark();
4205
d84a7b20
MC		 4206 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4207
6dcb100f
RL		 4208 ERR_pop_to_mark();
4209
4210 return 1;
4211}
4212
4213int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4214{
4215 X509_LOOKUP *lookup;
4216
4217 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4218 if (lookup == NULL)
4219 return 0;
4220
4221 /* We ignore errors, in case the directory doesn't exist */
4222 ERR_set_mark();
4223
4224 X509_LOOKUP_add_store(lookup, NULL);
4225
4226 ERR_pop_to_mark();
d84a7b20
MC		 4227
4228 return 1;
4229}
4230
6dcb100f
RL		 4231int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4232{
4233 return X509_STORE_load_file(ctx->cert_store, CAfile);
4234}
4235
4236int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4237{
4238 return X509_STORE_load_path(ctx->cert_store, CApath);
4239}
4240
4241int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4242{
4243 return X509_STORE_load_store(ctx->cert_store, CAstore);
4244}
4245
4246#if OPENSSL_API_LEVEL < 3
303c0028 4247int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4248 const char *CApath)
4249{
6dcb100f
RL		 4250 if (CAfile == NULL && CApath == NULL)
4251 return 0;
4252 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4253 return 0;
4254 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4255 return 0;
4256 return 1;
0f113f3e 4257}
6dcb100f 4258#endif
58964a49 4259
45d87a1f 4260void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4261 void (*cb) (const SSL *ssl, int type, int val))
4262{
4263 ssl->info_callback = cb;
4264}
4265
4266/*
4267 * One compiler (Diab DCC) doesn't like argument names in returned function
4268 * pointer.
4269 */
4270void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4271 int /* type */ ,
4272 int /* val */ ) {
4273 return ssl->info_callback;
4274}
58964a49 4275
0f113f3e
MC		 4276void SSL_set_verify_result(SSL *ssl, long arg)
4277{
4278 ssl->verify_result = arg;
4279}
58964a49 4280
0821bcd4 4281long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4282{
26a7d938 4283 return ssl->verify_result;
0f113f3e
MC		 4284}
4285
d9f1c639 4286size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4287{
6b8f5d0d 4288 if (outlen == 0)
555cbb32
TS		 4289 return sizeof(ssl->s3.client_random);
4290 if (outlen > sizeof(ssl->s3.client_random))
4291 outlen = sizeof(ssl->s3.client_random);
4292 memcpy(out, ssl->s3.client_random, outlen);
d9f1c639 4293 return outlen;
858618e7
NM		 4294}
4295
d9f1c639 4296size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4297{
6b8f5d0d 4298 if (outlen == 0)
555cbb32
TS		 4299 return sizeof(ssl->s3.server_random);
4300 if (outlen > sizeof(ssl->s3.server_random))
4301 outlen = sizeof(ssl->s3.server_random);
4302 memcpy(out, ssl->s3.server_random, outlen);
d9f1c639 4303 return outlen;
858618e7
NM		 4304}
4305
d9f1c639 4306size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4307 unsigned char *out, size_t outlen)
858618e7 4308{
d9f1c639
MC		 4309 if (outlen == 0)
4310 return session->master_key_length;
8c1a5343 4311 if (outlen > session->master_key_length)
858618e7
NM		 4312 outlen = session->master_key_length;
4313 memcpy(out, session->master_key, outlen);
d9f1c639 4314 return outlen;
858618e7
NM		 4315}
4316
725b0f1e 4317int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4318 size_t len)
4319{
4320 if (len > sizeof(sess->master_key))
4321 return 0;
4322
4323 memcpy(sess->master_key, in, len);
4324 sess->master_key_length = len;
911d63f2
MC		 4325 return 1;
4326}
4327
4328
0f113f3e
MC		 4329int SSL_set_ex_data(SSL *s, int idx, void *arg)
4330{
26a7d938 4331 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4332}
4333
4334void *SSL_get_ex_data(const SSL *s, int idx)
4335{
26a7d938 4336 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4337}
4338
0f113f3e
MC		 4339int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4340{
26a7d938 4341 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4342}
4343
4344void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4345{
26a7d938 4346 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4347}
58964a49 4348
0821bcd4 4349X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4350{
26a7d938 4351 return ctx->cert_store;
0f113f3e 4352}
413c4f45 4353
0f113f3e
MC		 4354void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4355{
222561fe 4356 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4357 ctx->cert_store = store;
4358}
413c4f45 4359
b50052db
TS		 4360void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4361{
4362 if (store != NULL)
4363 X509_STORE_up_ref(store);
4364 SSL_CTX_set_cert_store(ctx, store);
4365}
4366
0821bcd4 4367int SSL_want(const SSL *s)
0f113f3e 4368{
26a7d938 4369 return s->rwstate;
0f113f3e 4370}
413c4f45 4371
0f113f3e 4372/**
4f43d0e7
BL		 4373 * \brief Set the callback for generating temporary DH keys.
4374 * \param ctx the SSL context.
4375 * \param dh the callback
4376 */
4377
bc36ee62 4378#ifndef OPENSSL_NO_DH
0f113f3e
MC		 4379void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4380 DH *(*dh) (SSL *ssl, int is_export,
4381 int keylength))
4382{
4383 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4384}
f8c3c05d 4385
0f113f3e
MC		 4386void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4387 int keylength))
4388{
4389 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4390}
79df9d62 4391#endif
15d21c2d 4392
ddac1974
NL		 4393#ifndef OPENSSL_NO_PSK
4394int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4395{
4396 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 4397 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4398 return 0;
4399 }
df6da24b 4400 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4401 if (identity_hint != NULL) {
7644a9ae 4402 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4403 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4404 return 0;
4405 } else
df6da24b 4406 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4407 return 1;
4408}
ddac1974
NL		 4409
4410int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4411{
4412 if (s == NULL)
4413 return 0;
4414
0f113f3e
MC		 4415 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4416 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4417 return 0;
4418 }
df6da24b 4419 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4420 if (identity_hint != NULL) {
7644a9ae 4421 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4422 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4423 return 0;
4424 } else
df6da24b 4425 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4426 return 1;
4427}
ddac1974
NL		 4428
4429const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4430{
4431 if (s == NULL || s->session == NULL)
4432 return NULL;
26a7d938 4433 return s->session->psk_identity_hint;
0f113f3e 4434}
ddac1974
NL		 4435
4436const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4437{
4438 if (s == NULL || s->session == NULL)
4439 return NULL;
26a7d938 4440 return s->session->psk_identity;
0f113f3e 4441}
7806f3dd 4442
8cbfcc70 4443void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4444{
4445 s->psk_client_callback = cb;
4446}
7806f3dd 4447
8cbfcc70 4448void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4449{
4450 ctx->psk_client_callback = cb;
4451}
7806f3dd 4452
8cbfcc70 4453void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4454{
4455 s->psk_server_callback = cb;
4456}
7806f3dd 4457
8cbfcc70 4458void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4459{
4460 ctx->psk_server_callback = cb;
4461}
4462#endif
4463
f46184bd
MC		 4464void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4465{
4466 s->psk_find_session_cb = cb;
4467}
4468
4469void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4470 SSL_psk_find_session_cb_func cb)
4471{
4472 ctx->psk_find_session_cb = cb;
4473}
4474
4475void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4476{
4477 s->psk_use_session_cb = cb;
4478}
4479
4480void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4481 SSL_psk_use_session_cb_func cb)
4482{
4483 ctx->psk_use_session_cb = cb;
4484}
4485
0f113f3e
MC		 4486void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4487 void (*cb) (int write_p, int version,
4488 int content_type, const void *buf,
4489 size_t len, SSL *ssl, void *arg))
4490{
4491 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4492}
4493
4494void SSL_set_msg_callback(SSL *ssl,
4495 void (*cb) (int write_p, int version,
4496 int content_type, const void *buf,
4497 size_t len, SSL *ssl, void *arg))
4498{
4499 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4500}
a661b653 4501
7c2d4fee 4502void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4503 int (*cb) (SSL *ssl,
4504 int
4505 is_forward_secure))
4506{
4507 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4508 (void (*)(void))cb);
4509}
4510
7c2d4fee 4511void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4512 int (*cb) (SSL *ssl,
4513 int is_forward_secure))
4514{
4515 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4516 (void (*)(void))cb);
4517}
4518
c649d10d
TS		 4519void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4520 size_t (*cb) (SSL *ssl, int type,
4521 size_t len, void *arg))
4522{
4523 ctx->record_padding_cb = cb;
4524}
4525
4526void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4527{
4528 ctx->record_padding_arg = arg;
4529}
4530
3499327b 4531void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
c649d10d
TS		 4532{
4533 return ctx->record_padding_arg;
4534}
4535
4536int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4537{
4538 /* block size of 0 or 1 is basically no padding */
4539 if (block_size == 1)
4540 ctx->block_padding = 0;
4541 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4542 ctx->block_padding = block_size;
4543 else
4544 return 0;
4545 return 1;
4546}
4547
4548void SSL_set_record_padding_callback(SSL *ssl,
4549 size_t (*cb) (SSL *ssl, int type,
4550 size_t len, void *arg))
4551{
4552 ssl->record_padding_cb = cb;
4553}
4554
4555void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4556{
4557 ssl->record_padding_arg = arg;
4558}
4559
3499327b 4560void *SSL_get_record_padding_callback_arg(const SSL *ssl)
c649d10d
TS		 4561{
4562 return ssl->record_padding_arg;
4563}
4564
4565int SSL_set_block_padding(SSL *ssl, size_t block_size)
4566{
4567 /* block size of 0 or 1 is basically no padding */
4568 if (block_size == 1)
4569 ssl->block_padding = 0;
4570 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4571 ssl->block_padding = block_size;
4572 else
4573 return 0;
4574 return 1;
4575}
4576
9d0a8bb7
MC		 4577int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4578{
4579 s->num_tickets = num_tickets;
4580
4581 return 1;
4582}
4583
3499327b 4584size_t SSL_get_num_tickets(const SSL *s)
9d0a8bb7
MC		 4585{
4586 return s->num_tickets;
4587}
4588
4589int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4590{
4591 ctx->num_tickets = num_tickets;
4592
4593 return 1;
4594}
4595
3499327b 4596size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
9d0a8bb7
MC		 4597{
4598 return ctx->num_tickets;
4599}
4600
0f113f3e
MC		 4601/*
4602 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4603 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4604 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4605 * Returns the newly allocated ctx;
8671b898 4606 */
b948e2c5 4607
0f113f3e 4608EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4609{
0f113f3e 4610 ssl_clear_hash_ctx(hash);
bfb0641f 4611 *hash = EVP_MD_CTX_new();
5f3d93e4 4612 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4613 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4614 *hash = NULL;
4615 return NULL;
4616 }
0f113f3e 4617 return *hash;
b948e2c5 4618}
0f113f3e
MC		 4619
4620void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4621{
4622
0d9824c1 4623 EVP_MD_CTX_free(*hash);
0f113f3e 4624 *hash = NULL;
b948e2c5 4625}
a661b653 4626
48fbcbac 4627/* Retrieve handshake hashes */
8c1a5343
MC		 4628int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4629 size_t *hashlen)
48fbcbac 4630{
6e59a892 4631 EVP_MD_CTX *ctx = NULL;
555cbb32 4632 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
8c1a5343
MC		 4633 int hashleni = EVP_MD_CTX_size(hdgst);
4634 int ret = 0;
4635
f63a17d6
MC		 4636 if (hashleni < 0 || (size_t)hashleni > outlen) {
4637 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4638 ERR_R_INTERNAL_ERROR);
28ba2541 4639 goto err;
f63a17d6 4640 }
8c1a5343 4641
bfb0641f 4642 ctx = EVP_MD_CTX_new();
8c1a5343 4643 if (ctx == NULL)
6e59a892 4644 goto err;
8c1a5343 4645
6e59a892 4646 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4647 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4648 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4649 ERR_R_INTERNAL_ERROR);
8c1a5343 4650 goto err;
f63a17d6 4651 }
8c1a5343
MC		 4652
4653 *hashlen = hashleni;
4654
4655 ret = 1;
48fbcbac 4656 err:
bfb0641f 4657 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4658 return ret;
4659}
4660
c04b66b1 4661int SSL_session_reused(const SSL *s)
0f113f3e
MC		 4662{
4663 return s->hit;
4664}
08557cf2 4665
69443116 4666int SSL_is_server(const SSL *s)
0f113f3e
MC		 4667{
4668 return s->server;
4669}
87adf1fa 4670
fcd2d5a6 4671#if !OPENSSL_API_1_1_0
47153c72
RS		 4672void SSL_set_debug(SSL *s, int debug)
4673{
4674 /* Old function was do-nothing anyway... */
4675 (void)s;
4676 (void)debug;
4677}
4678#endif
4679
b362ccab 4680void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4681{
4682 s->cert->sec_level = level;
4683}
b362ccab
DSH		 4684
4685int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4686{
4687 return s->cert->sec_level;
4688}
b362ccab 4689
0f113f3e 4690void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4691 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4692 int op, int bits, int nid,
4693 void *other, void *ex))
0f113f3e
MC		 4694{
4695 s->cert->sec_cb = cb;
4696}
b362ccab 4697
a230b26e
EK		 4698int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4699 const SSL_CTX *ctx, int op,
4700 int bits, int nid, void *other,
4701 void *ex) {
0f113f3e
MC		 4702 return s->cert->sec_cb;
4703}
b362ccab
DSH		 4704
4705void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4706{
4707 s->cert->sec_ex = ex;
4708}
b362ccab
DSH		 4709
4710void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4711{
4712 return s->cert->sec_ex;
4713}
b362ccab
DSH		 4714
4715void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4716{
4717 ctx->cert->sec_level = level;
4718}
b362ccab
DSH		 4719
4720int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4721{
4722 return ctx->cert->sec_level;
4723}
b362ccab 4724
0f113f3e 4725void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4726 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4727 int op, int bits, int nid,
4728 void *other, void *ex))
0f113f3e
MC		 4729{
4730 ctx->cert->sec_cb = cb;
4731}
b362ccab 4732
e4646a89
KR		 4733int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4734 const SSL_CTX *ctx,
0f113f3e
MC		 4735 int op, int bits,
4736 int nid,
4737 void *other,
4738 void *ex) {
4739 return ctx->cert->sec_cb;
4740}
b362ccab
DSH		 4741
4742void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4743{
4744 ctx->cert->sec_ex = ex;
4745}
b362ccab
DSH		 4746
4747void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4748{
4749 return ctx->cert->sec_ex;
4750}
b362ccab 4751
8106cb8b
VD		 4752/*
4753 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4754 * can return unsigned long, instead of the generic long return value from the
4755 * control interface.
4756 */
4757unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4758{
4759 return ctx->options;
4760}
a230b26e
EK		 4761
4762unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4763{
4764 return s->options;
4765}
a230b26e 4766
8106cb8b
VD		 4767unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4768{
4769 return ctx->options |= op;
4770}
a230b26e 4771
8106cb8b
VD		 4772unsigned long SSL_set_options(SSL *s, unsigned long op)
4773{
4774 return s->options |= op;
4775}
a230b26e 4776
8106cb8b
VD		 4777unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4778{
4779 return ctx->options &= ~op;
4780}
a230b26e 4781
8106cb8b
VD		 4782unsigned long SSL_clear_options(SSL *s, unsigned long op)
4783{
4784 return s->options &= ~op;
4785}
4786
696178ed
DSH		 4787STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4788{
4789 return s->verified_chain;
4790}
4791
0f113f3e 4792IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4793
4794#ifndef OPENSSL_NO_CT
4795
4796/*
4797 * Moves SCTs from the |src| stack to the |dst| stack.
4798 * The source of each SCT will be set to |origin|.
4799 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4800 * the caller.
4801 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4802 */
a230b26e
EK		 4803static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4804 sct_source_t origin)
ed29e82a
RP		 4805{
4806 int scts_moved = 0;
4807 SCT *sct = NULL;
4808
4809 if (*dst == NULL) {
4810 *dst = sk_SCT_new_null();
4811 if (*dst == NULL) {
4812 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4813 goto err;
4814 }
4815 }
4816
4817 while ((sct = sk_SCT_pop(src)) != NULL) {
4818 if (SCT_set_source(sct, origin) != 1)
4819 goto err;
4820
4821 if (sk_SCT_push(*dst, sct) <= 0)
4822 goto err;
4823 scts_moved += 1;
4824 }
4825
4826 return scts_moved;
a230b26e 4827 err:
ed29e82a 4828 if (sct != NULL)
a230b26e 4829 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4830 return -1;
ed29e82a
RP		 4831}
4832
4833/*
a230b26e 4834 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4835 * Returns the number of SCTs extracted.
a230b26e 4836 */
ed29e82a
RP		 4837static int ct_extract_tls_extension_scts(SSL *s)
4838{
4839 int scts_extracted = 0;
4840
aff8c126
RS		 4841 if (s->ext.scts != NULL) {
4842 const unsigned char *p = s->ext.scts;
4843 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4844
4845 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4846
4847 SCT_LIST_free(scts);
4848 }
4849
4850 return scts_extracted;
4851}
4852
4853/*
4854 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4855 * contains an SCT X509 extension. They will be stored in |s->scts|.
4856 * Returns:
4857 * - The number of SCTs extracted, assuming an OCSP response exists.
4858 * - 0 if no OCSP response exists or it contains no SCTs.
4859 * - A negative integer if an error occurs.
4860 */
4861static int ct_extract_ocsp_response_scts(SSL *s)
4862{
a230b26e 4863# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4864 int scts_extracted = 0;
4865 const unsigned char *p;
4866 OCSP_BASICRESP *br = NULL;
4867 OCSP_RESPONSE *rsp = NULL;
4868 STACK_OF(SCT) *scts = NULL;
4869 int i;
4870
aff8c126 4871 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4872 goto err;
4873
aff8c126
RS		 4874 p = s->ext.ocsp.resp;
4875 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4876 if (rsp == NULL)
4877 goto err;
4878
4879 br = OCSP_response_get1_basic(rsp);
4880 if (br == NULL)
4881 goto err;
4882
4883 for (i = 0; i < OCSP_resp_count(br); ++i) {
4884 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4885
4886 if (single == NULL)
4887 continue;
4888
a230b26e
EK		 4889 scts =
4890 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4891 scts_extracted =
4892 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4893 if (scts_extracted < 0)
4894 goto err;
4895 }
a230b26e 4896 err:
ed29e82a
RP		 4897 SCT_LIST_free(scts);
4898 OCSP_BASICRESP_free(br);
4899 OCSP_RESPONSE_free(rsp);
4900 return scts_extracted;
a230b26e 4901# else
3e41ac35
MC		 4902 /* Behave as if no OCSP response exists */
4903 return 0;
a230b26e 4904# endif
ed29e82a
RP		 4905}
4906
4907/*
4908 * Attempts to extract SCTs from the peer certificate.
4909 * Return the number of SCTs extracted, or a negative integer if an error
4910 * occurs.
4911 */
4912static int ct_extract_x509v3_extension_scts(SSL *s)
4913{
4914 int scts_extracted = 0;
3f3c7d26 4915 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4916
4917 if (cert != NULL) {
4918 STACK_OF(SCT) *scts =
4919 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4920
4921 scts_extracted =
4922 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4923
4924 SCT_LIST_free(scts);
4925 }
4926
4927 return scts_extracted;
4928}
4929
4930/*
4931 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4932 * response (if it exists) and X509v3 extensions in the certificate.
4933 * Returns NULL if an error occurs.
4934 */
4935const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4936{
4937 if (!s->scts_parsed) {
4938 if (ct_extract_tls_extension_scts(s) < 0 ||
4939 ct_extract_ocsp_response_scts(s) < 0 ||
4940 ct_extract_x509v3_extension_scts(s) < 0)
4941 goto err;
4942
4943 s->scts_parsed = 1;
4944 }
4945 return s->scts;
a230b26e 4946 err:
ed29e82a
RP		 4947 return NULL;
4948}
4949
a230b26e 4950static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4951 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4952{
43341433
VD		 4953 return 1;
4954}
4955
a230b26e 4956static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4957 const STACK_OF(SCT) *scts, void *unused_arg)
4958{
4959 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4960 int i;
ed29e82a 4961
43341433
VD		 4962 for (i = 0; i < count; ++i) {
4963 SCT *sct = sk_SCT_value(scts, i);
4964 int status = SCT_get_validation_status(sct);
4965
4966 if (status == SCT_VALIDATION_STATUS_VALID)
4967 return 1;
4968 }
4969 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4970 return 0;
4971}
4972
4973int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4974 void *arg)
4975{
ed29e82a
RP		 4976 /*
4977 * Since code exists that uses the custom extension handler for CT, look
4978 * for this and throw an error if they have already registered to use CT.
4979 */
4980 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4981 TLSEXT_TYPE_signed_certificate_timestamp))
4982 {
ed29e82a
RP		 4983 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4984 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4985 return 0;
ed29e82a
RP		 4986 }
4987
ed29e82a 4988 if (callback != NULL) {
a230b26e
EK		 4989 /*
4990 * If we are validating CT, then we MUST accept SCTs served via OCSP
4991 */
ed29e82a 4992 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4993 return 0;
ed29e82a
RP		 4994 }
4995
43341433
VD		 4996 s->ct_validation_callback = callback;
4997 s->ct_validation_callback_arg = arg;
4998
4999 return 1;
ed29e82a
RP		 5000}
5001
43341433 5002int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 5003 ssl_ct_validation_cb callback, void *arg)
ed29e82a 5004{
ed29e82a
RP		 5005 /*
5006 * Since code exists that uses the custom extension handler for CT, look for
5007 * this and throw an error if they have already registered to use CT.
5008 */
5009 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 5010 TLSEXT_TYPE_signed_certificate_timestamp))
5011 {
ed29e82a
RP		 5012 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5013 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 5014 return 0;
ed29e82a
RP		 5015 }
5016
5017 ctx->ct_validation_callback = callback;
5018 ctx->ct_validation_callback_arg = arg;
43341433 5019 return 1;
ed29e82a
RP		 5020}
5021
43341433 5022int SSL_ct_is_enabled(const SSL *s)
ed29e82a 5023{
43341433 5024 return s->ct_validation_callback != NULL;
ed29e82a
RP		 5025}
5026
43341433 5027int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 5028{
43341433 5029 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 5030}
5031
4d482ee2 5032int ssl_validate_ct(SSL *s)
ed29e82a
RP		 5033{
5034 int ret = 0;
3f3c7d26 5035 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 5036 X509 *issuer;
b9aec69a 5037 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 5038 CT_POLICY_EVAL_CTX *ctx = NULL;
5039 const STACK_OF(SCT) *scts;
5040
43341433
VD		 5041 /*
5042 * If no callback is set, the peer is anonymous, or its chain is invalid,
5043 * skip SCT validation - just return success. Applications that continue
5044 * handshakes without certificates, with unverified chains, or pinned leaf
5045 * certificates are outside the scope of the WebPKI and CT.
5046 *
5047 * The above exclusions notwithstanding the vast majority of peers will
5048 * have rather ordinary certificate chains validated by typical
5049 * applications that perform certificate verification and therefore will
5050 * process SCTs when enabled.
5051 */
5052 if (s->ct_validation_callback == NULL || cert == NULL ||
5053 s->verify_result != X509_V_OK ||
a230b26e 5054 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 5055 return 1;
5056
43341433
VD		 5057 /*
5058 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5059 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5060 */
5061 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5062 switch (dane->mtlsa->usage) {
5063 case DANETLS_USAGE_DANE_TA:
5064 case DANETLS_USAGE_DANE_EE:
5065 return 1;
5066 }
ed29e82a
RP		 5067 }
5068
ed29e82a
RP		 5069 ctx = CT_POLICY_EVAL_CTX_new();
5070 if (ctx == NULL) {
f63a17d6
MC		 5071 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5072 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 5073 goto end;
5074 }
5075
43341433 5076 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 5077 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5078 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5079 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 5080 CT_POLICY_EVAL_CTX_set_time(
5081 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 5082
5083 scts = SSL_get0_peer_scts(s);
5084
43341433
VD		 5085 /*
5086 * This function returns success (> 0) only when all the SCTs are valid, 0
5087 * when some are invalid, and < 0 on various internal errors (out of
5088 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5089 * reason to abort the handshake, that decision is up to the callback.
5090 * Therefore, we error out only in the unexpected case that the return
5091 * value is negative.
5092 *
5093 * XXX: One might well argue that the return value of this function is an
f430ba31 5094 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 5095 * status of each of the provided SCTs. So long as it correctly separates
5096 * the wheat from the chaff it should return success. Failure in this case
5097 * ought to correspond to an inability to carry out its duties.
5098 */
5099 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 5100 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5101 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 5102 goto end;
5103 }
5104
5105 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5106 if (ret < 0)
a230b26e 5107 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 5108 if (!ret)
5109 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5110 SSL_R_CALLBACK_FAILED);
ed29e82a 5111
a230b26e 5112 end:
ed29e82a 5113 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 5114 /*
5115 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5116 * failure return code here. Also the application may wish the complete
5117 * the handshake, and then disconnect cleanly at a higher layer, after
5118 * checking the verification status of the completed connection.
5119 *
5120 * We therefore force a certificate verification failure which will be
5121 * visible via SSL_get_verify_result() and cached as part of any resumed
5122 * session.
5123 *
5124 * Note: the permissive callback is for information gathering only, always
5125 * returns success, and does not affect verification status. Only the
5126 * strict callback or a custom application-specified callback can trigger
5127 * connection failure or record a verification error.
5128 */
5129 if (ret <= 0)
5130 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 5131 return ret;
5132}
5133
43341433
VD		 5134int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5135{
5136 switch (validation_mode) {
5137 default:
5138 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5139 return 0;
5140 case SSL_CT_VALIDATION_PERMISSIVE:
5141 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5142 case SSL_CT_VALIDATION_STRICT:
5143 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5144 }
5145}
5146
5147int SSL_enable_ct(SSL *s, int validation_mode)
5148{
5149 switch (validation_mode) {
5150 default:
5151 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5152 return 0;
5153 case SSL_CT_VALIDATION_PERMISSIVE:
5154 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5155 case SSL_CT_VALIDATION_STRICT:
5156 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5157 }
5158}
5159
ed29e82a
RP		 5160int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5161{
328f36c5 5162 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 5163}
5164
5165int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5166{
5167 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5168}
5169
a230b26e 5170void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 5171{
5172 CTLOG_STORE_free(ctx->ctlog_store);
5173 ctx->ctlog_store = logs;
5174}
5175
5176const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5177{
5178 return ctx->ctlog_store;
5179}
5180
6b1bb98f
BK		 5181#endif /* OPENSSL_NO_CT */
5182
a9c0d8be
DB		 5183void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5184 void *arg)
6b1bb98f 5185{
a9c0d8be
DB		 5186 c->client_hello_cb = cb;
5187 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 5188}
5189
a9c0d8be 5190int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 5191{
5192 if (s->clienthello == NULL)
5193 return 0;
5194 return s->clienthello->isv2;
5195}
5196
a9c0d8be 5197unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 5198{
5199 if (s->clienthello == NULL)
5200 return 0;
5201 return s->clienthello->legacy_version;
5202}
5203
a9c0d8be 5204size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5205{
5206 if (s->clienthello == NULL)
5207 return 0;
5208 if (out != NULL)
5209 *out = s->clienthello->random;
5210 return SSL3_RANDOM_SIZE;
5211}
5212
a9c0d8be 5213size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5214{
5215 if (s->clienthello == NULL)
5216 return 0;
5217 if (out != NULL)
5218 *out = s->clienthello->session_id;
5219 return s->clienthello->session_id_len;
5220}
5221
a9c0d8be 5222size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5223{
5224 if (s->clienthello == NULL)
5225 return 0;
5226 if (out != NULL)
5227 *out = PACKET_data(&s->clienthello->ciphersuites);
5228 return PACKET_remaining(&s->clienthello->ciphersuites);
5229}
5230
a9c0d8be 5231size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5232{
5233 if (s->clienthello == NULL)
5234 return 0;
5235 if (out != NULL)
5236 *out = s->clienthello->compressions;
5237 return s->clienthello->compressions_len;
5238}
5239
a9c0d8be 5240int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5241{
5242 RAW_EXTENSION *ext;
5243 int *present;
5244 size_t num = 0, i;
5245
5246 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5247 return 0;
5248 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5249 ext = s->clienthello->pre_proc_exts + i;
5250 if (ext->present)
5251 num++;
5252 }
6fda11ae 5253 if (num == 0) {
5254 *out = NULL;
5255 *outlen = 0;
5256 return 1;
5257 }
cdb10bae
RS		 5258 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5259 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5260 ERR_R_MALLOC_FAILURE);
193b5d76 5261 return 0;
cdb10bae 5262 }
193b5d76
BK		 5263 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5264 ext = s->clienthello->pre_proc_exts + i;
5265 if (ext->present) {
5266 if (ext->received_order >= num)
5267 goto err;
5268 present[ext->received_order] = ext->type;
5269 }
5270 }
5271 *out = present;
5272 *outlen = num;
5273 return 1;
5274 err:
5275 OPENSSL_free(present);
5276 return 0;
5277}
5278
a9c0d8be 5279int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5280 size_t *outlen)
5281{
5282 size_t i;
5283 RAW_EXTENSION *r;
5284
5285 if (s->clienthello == NULL)
5286 return 0;
5287 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5288 r = s->clienthello->pre_proc_exts + i;
5289 if (r->present && r->type == type) {
5290 if (out != NULL)
5291 *out = PACKET_data(&r->data);
5292 if (outlen != NULL)
5293 *outlen = PACKET_remaining(&r->data);
5294 return 1;
5295 }
5296 }
5297 return 0;
5298}
2faa1b48 5299
a58eb06d
TS		 5300int SSL_free_buffers(SSL *ssl)
5301{
5302 RECORD_LAYER *rl = &ssl->rlayer;
5303
5304 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5305 return 0;
5306
5307 RECORD_LAYER_release(rl);
5308 return 1;
5309}
5310
5311int SSL_alloc_buffers(SSL *ssl)
5312{
5313 return ssl3_setup_buffers(ssl);
5314}
5315
2faa1b48
CB		 5316void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5317{
5318 ctx->keylog_callback = cb;
5319}
5320
5321SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5322{
5323 return ctx->keylog_callback;
5324}
5325
5326static int nss_keylog_int(const char *prefix,
5327 SSL *ssl,
5328 const uint8_t *parameter_1,
5329 size_t parameter_1_len,
5330 const uint8_t *parameter_2,
5331 size_t parameter_2_len)
5332{
5333 char *out = NULL;
5334 char *cursor = NULL;
5335 size_t out_len = 0;
5336 size_t i;
5337 size_t prefix_len;
5338
20870286
P		 5339 if (ssl->ctx->keylog_callback == NULL)
5340 return 1;
2faa1b48
CB		 5341
5342 /*
5343 * Our output buffer will contain the following strings, rendered with
5344 * space characters in between, terminated by a NULL character: first the
5345 * prefix, then the first parameter, then the second parameter. The
5346 * meaning of each parameter depends on the specific key material being
5347 * logged. Note that the first and second parameters are encoded in
5348 * hexadecimal, so we need a buffer that is twice their lengths.
5349 */
5350 prefix_len = strlen(prefix);
e931f370 5351 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
2faa1b48 5352 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 5353 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5354 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5355 return 0;
5356 }
5357
5358 strcpy(cursor, prefix);
5359 cursor += prefix_len;
5360 *cursor++ = ' ';
5361
5362 for (i = 0; i < parameter_1_len; i++) {
5363 sprintf(cursor, "%02x", parameter_1[i]);
5364 cursor += 2;
5365 }
5366 *cursor++ = ' ';
5367
5368 for (i = 0; i < parameter_2_len; i++) {
5369 sprintf(cursor, "%02x", parameter_2[i]);
5370 cursor += 2;
5371 }
5372 *cursor = '\0';
5373
5374 ssl->ctx->keylog_callback(ssl, (const char *)out);
e931f370 5375 OPENSSL_clear_free(out, out_len);
2faa1b48
CB		 5376 return 1;
5377
5378}
5379
5380int ssl_log_rsa_client_key_exchange(SSL *ssl,
5381 const uint8_t *encrypted_premaster,
5382 size_t encrypted_premaster_len,
5383 const uint8_t *premaster,
5384 size_t premaster_len)
5385{
5386 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 5387 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5388 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5389 return 0;
5390 }
5391
f0deb4d3 5392 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5393 return nss_keylog_int("RSA",
5394 ssl,
5395 encrypted_premaster,
f0deb4d3 5396 8,
2faa1b48
CB		 5397 premaster,
5398 premaster_len);
5399}
5400
2c7bd692
CB		 5401int ssl_log_secret(SSL *ssl,
5402 const char *label,
5403 const uint8_t *secret,
5404 size_t secret_len)
2faa1b48 5405{
2c7bd692 5406 return nss_keylog_int(label,
2faa1b48 5407 ssl,
555cbb32 5408 ssl->s3.client_random,
2c7bd692
CB		 5409 SSL3_RANDOM_SIZE,
5410 secret,
5411 secret_len);
2faa1b48
CB		 5412}
5413
ccb8e6e0
BK		 5414#define SSLV2_CIPHER_LEN 3
5415
f63a17d6 5416int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5417{
ccb8e6e0 5418 int n;
ccb8e6e0
BK		 5419
5420 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5421
5422 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5423 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5424 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5425 return 0;
ccb8e6e0
BK		 5426 }
5427
5428 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5429 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 5430 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5431 return 0;
ccb8e6e0
BK		 5432 }
5433
555cbb32
TS		 5434 OPENSSL_free(s->s3.tmp.ciphers_raw);
5435 s->s3.tmp.ciphers_raw = NULL;
5436 s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5437
5438 if (sslv2format) {
5439 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5440 PACKET sslv2ciphers = *cipher_suites;
5441 unsigned int leadbyte;
5442 unsigned char *raw;
5443
5444 /*
5445 * We store the raw ciphers list in SSLv3+ format so we need to do some
5446 * preprocessing to convert the list first. If there are any SSLv2 only
5447 * ciphersuites with a non-zero leading byte then we are going to
5448 * slightly over allocate because we won't store those. But that isn't a
5449 * problem.
5450 */
5451 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
555cbb32 5452 s->s3.tmp.ciphers_raw = raw;
ccb8e6e0 5453 if (raw == NULL) {
f63a17d6
MC		 5454 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5455 ERR_R_MALLOC_FAILURE);
5456 return 0;
ccb8e6e0 5457 }
555cbb32 5458 for (s->s3.tmp.ciphers_rawlen = 0;
ccb8e6e0
BK		 5459 PACKET_remaining(&sslv2ciphers) > 0;
5460 raw += TLS_CIPHER_LEN) {
5461 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5462 || (leadbyte == 0
5463 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5464 TLS_CIPHER_LEN))
5465 || (leadbyte != 0
5466 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5467 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5468 SSL_R_BAD_PACKET);
555cbb32
TS		 5469 OPENSSL_free(s->s3.tmp.ciphers_raw);
5470 s->s3.tmp.ciphers_raw = NULL;
5471 s->s3.tmp.ciphers_rawlen = 0;
f63a17d6 5472 return 0;
ccb8e6e0
BK		 5473 }
5474 if (leadbyte == 0)
555cbb32 5475 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
ccb8e6e0 5476 }
555cbb32
TS		 5477 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5478 &s->s3.tmp.ciphers_rawlen)) {
f63a17d6
MC		 5479 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5480 ERR_R_INTERNAL_ERROR);
5481 return 0;
ccb8e6e0 5482 }
90134d98 5483 return 1;
90134d98
BK		 5484}
5485
5486int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5487 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5488 STACK_OF(SSL_CIPHER) **scsvs)
5489{
90134d98
BK		 5490 PACKET pkt;
5491
5492 if (!PACKET_buf_init(&pkt, bytes, len))
5493 return 0;
f63a17d6 5494 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5495}
5496
5497int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5498 STACK_OF(SSL_CIPHER) **skp,
5499 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5500 int sslv2format, int fatal)
90134d98
BK		 5501{
5502 const SSL_CIPHER *c;
5503 STACK_OF(SSL_CIPHER) *sk = NULL;
5504 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5505 int n;
5506 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5507 unsigned char cipher[SSLV2_CIPHER_LEN];
5508
5509 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5510
5511 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5512 if (fatal)
5513 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5514 SSL_R_NO_CIPHERS_SPECIFIED);
5515 else
5516 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5517 return 0;
5518 }
5519
5520 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5521 if (fatal)
5522 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5523 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5524 else
5525 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5526 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5527 return 0;
5528 }
5529
5530 sk = sk_SSL_CIPHER_new_null();
5531 scsvs = sk_SSL_CIPHER_new_null();
5532 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5533 if (fatal)
5534 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5535 ERR_R_MALLOC_FAILURE);
5536 else
5537 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5538 goto err;
5539 }
ccb8e6e0
BK		 5540
5541 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5542 /*
5543 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5544 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5545 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5546 */
5547 if (sslv2format && cipher[0] != '\0')
5548 continue;
5549
ccb8e6e0
BK		 5550 /* For SSLv2-compat, ignore leading 0-byte. */
5551 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5552 if (c != NULL) {
90134d98
BK		 5553 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5554 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5555 if (fatal)
5556 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5557 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5558 else
5559 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5560 goto err;
5561 }
5562 }
5563 }
5564 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5565 if (fatal)
5566 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5567 SSL_R_BAD_LENGTH);
5568 else
5569 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5570 goto err;
5571 }
5572
90134d98
BK		 5573 if (skp != NULL)
5574 *skp = sk;
5575 else
5576 sk_SSL_CIPHER_free(sk);
5577 if (scsvs_out != NULL)
5578 *scsvs_out = scsvs;
5579 else
5580 sk_SSL_CIPHER_free(scsvs);
5581 return 1;
ccb8e6e0
BK		 5582 err:
5583 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5584 sk_SSL_CIPHER_free(scsvs);
5585 return 0;
ccb8e6e0 5586}
3fc8d856
MC		 5587
5588int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5589{
5590 ctx->max_early_data = max_early_data;
5591
5592 return 1;
5593}
5594
46dcb945 5595uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5596{
5597 return ctx->max_early_data;
5598}
5599
5600int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5601{
5602 s->max_early_data = max_early_data;
5603
5604 return 1;
5605}
5606
a8e75d56 5607uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5608{
5609 return s->max_early_data;
5610}
ae3947de 5611
4e8548e8
MC		 5612int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5613{
5614 ctx->recv_max_early_data = recv_max_early_data;
5615
5616 return 1;
5617}
5618
5619uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5620{
5621 return ctx->recv_max_early_data;
5622}
5623
5624int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5625{
5626 s->recv_max_early_data = recv_max_early_data;
5627
5628 return 1;
5629}
5630
5631uint32_t SSL_get_recv_max_early_data(const SSL *s)
5632{
5633 return s->recv_max_early_data;
5634}
5635
cf72c757
F		 5636__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5637{
5638 /* Return any active Max Fragment Len extension */
5639 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5640 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5641
5642 /* return current SSL connection setting */
5643 return ssl->max_send_fragment;
5644}
5645
5646__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5647{
5648 /* Return a value regarding an active Max Fragment Len extension */
5649 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5650 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5651 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5652
5653 /* else limit |split_send_fragment| to current |max_send_fragment| */
5654 if (ssl->split_send_fragment > ssl->max_send_fragment)
5655 return ssl->max_send_fragment;
5656
5657 /* return current SSL connection setting */
5658 return ssl->split_send_fragment;
5659}
042c5753
MC		 5660
5661int SSL_stateless(SSL *s)
5662{
5663 int ret;
5664
5665 /* Ensure there is no state left over from a previous invocation */
5666 if (!SSL_clear(s))
d6bb50a5 5667 return 0;
042c5753
MC		 5668
5669 ERR_clear_error();
5670
555cbb32 5671 s->s3.flags |= TLS1_FLAGS_STATELESS;
042c5753 5672 ret = SSL_accept(s);
555cbb32 5673 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
042c5753 5674
d6bb50a5 5675 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5676 return 1;
5677
e440f513
MC		 5678 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5679 return 0;
5680
5681 return -1;
042c5753 5682}
9d75dce3 5683
e97be718
MC		 5684void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5685{
5686 ctx->pha_enabled = val;
5687}
5688
32097b33 5689void SSL_set_post_handshake_auth(SSL *ssl, int val)
9d75dce3 5690{
32097b33 5691 ssl->pha_enabled = val;
9d75dce3
TS		 5692}
5693
5694int SSL_verify_client_post_handshake(SSL *ssl)
5695{
5696 if (!SSL_IS_TLS13(ssl)) {
5697 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5698 return 0;
5699 }
5700 if (!ssl->server) {
5701 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5702 return 0;
5703 }
5704
5705 if (!SSL_is_init_finished(ssl)) {
5706 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5707 return 0;
5708 }
5709
5710 switch (ssl->post_handshake_auth) {
5711 case SSL_PHA_NONE:
5712 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5713 return 0;
5714 default:
5715 case SSL_PHA_EXT_SENT:
5716 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5717 return 0;
5718 case SSL_PHA_EXT_RECEIVED:
5719 break;
5720 case SSL_PHA_REQUEST_PENDING:
5721 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5722 return 0;
5723 case SSL_PHA_REQUESTED:
5724 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5725 return 0;
5726 }
5727
5728 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5729
5730 /* checks verify_mode and algorithm_auth */
5731 if (!send_certificate_request(ssl)) {
5732 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5733 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5734 return 0;
5735 }
5736
5737 ossl_statem_set_in_init(ssl, 1);
5738 return 1;
5739}
df0fed9a
TS		 5740
5741int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5742 SSL_CTX_generate_session_ticket_fn gen_cb,
5743 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5744 void *arg)
5745{
5746 ctx->generate_ticket_cb = gen_cb;
5747 ctx->decrypt_ticket_cb = dec_cb;
5748 ctx->ticket_cb_data = arg;
5749 return 1;
5750}
c9598459
MC		 5751
5752void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5753 SSL_allow_early_data_cb_fn cb,
5754 void *arg)
5755{
5756 ctx->allow_early_data_cb = cb;
5757 ctx->allow_early_data_cb_data = arg;
5758}
5759
5760void SSL_set_allow_early_data_cb(SSL *s,
5761 SSL_allow_early_data_cb_fn cb,
5762 void *arg)
5763{
5764 s->allow_early_data_cb = cb;
5765 s->allow_early_data_cb_data = arg;
5766}
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