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Check getauxval on systems that have it when checking for setuid execution.
[thirdparty/openssl.git] / ssl / ssl_lib.c
CommitLineData
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 *
846e33c7
RS		 6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
bf21446a 10 */
846e33c7 11
d02b48c6 12#include <stdio.h>
7b63c0fa 13#include "ssl_locl.h"
ec577822 14#include <openssl/objects.h>
bb7cd4e3 15#include <openssl/x509v3.h>
6434abbf 16#include <openssl/rand.h>
6decf943 17#include <openssl/rand_drbg.h>
67c8e7f4 18#include <openssl/ocsp.h>
3c27208f
RS		 19#include <openssl/dh.h>
20#include <openssl/engine.h>
07bbc92c 21#include <openssl/async.h>
3c27208f 22#include <openssl/ct.h>
67dc995e 23#include "internal/cryptlib.h"
cd420b0b 24#include "internal/refcount.h"
0f113f3e 25
df2ee0e2 26const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
0f113f3e 27
fce78bd4
BE		 28static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
29{
30 (void)r;
31 (void)s;
32 (void)t;
33 return ssl_undefined_function(ssl);
34}
35
36static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
37 int t)
38{
39 (void)r;
40 (void)s;
41 (void)t;
42 return ssl_undefined_function(ssl);
43}
44
45static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
46 unsigned char *s, size_t t, size_t *u)
47{
48 (void)r;
49 (void)s;
50 (void)t;
51 (void)u;
52 return ssl_undefined_function(ssl);
53}
54
55static int ssl_undefined_function_4(SSL *ssl, int r)
56{
57 (void)r;
58 return ssl_undefined_function(ssl);
59}
60
61static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
62 unsigned char *t)
63{
64 (void)r;
65 (void)s;
66 (void)t;
67 return ssl_undefined_function(ssl);
68}
69
70static int ssl_undefined_function_6(int r)
71{
72 (void)r;
73 return ssl_undefined_function(NULL);
74}
75
76static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
77 const char *t, size_t u,
78 const unsigned char *v, size_t w, int x)
79{
80 (void)r;
81 (void)s;
82 (void)t;
83 (void)u;
84 (void)v;
85 (void)w;
86 (void)x;
87 return ssl_undefined_function(ssl);
88}
89
0f113f3e 90SSL3_ENC_METHOD ssl3_undef_enc_method = {
fce78bd4
BE		 91 ssl_undefined_function_1,
92 ssl_undefined_function_2,
0f113f3e 93 ssl_undefined_function,
fce78bd4
BE		 94 ssl_undefined_function_3,
95 ssl_undefined_function_4,
96 ssl_undefined_function_5,
0f113f3e
MC		 97 NULL, /* client_finished_label */
98 0, /* client_finished_label_len */
99 NULL, /* server_finished_label */
100 0, /* server_finished_label_len */
fce78bd4
BE		 101 ssl_undefined_function_6,
102 ssl_undefined_function_7,
0f113f3e 103};
d02b48c6 104
07bbc92c
MC		 105struct ssl_async_args {
106 SSL *s;
107 void *buf;
348240c6 108 size_t num;
a230b26e 109 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 110 union {
eda75751 111 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 112 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 113 int (*func_other) (SSL *);
add2f5ca 114 } f;
07bbc92c
MC		 115};
116
919ba009
VD		 117static const struct {
118 uint8_t mtype;
119 uint8_t ord;
a230b26e 120 int nid;
919ba009 121} dane_mds[] = {
a230b26e
EK		 122 {
123 DANETLS_MATCHING_FULL, 0, NID_undef
124 },
125 {
126 DANETLS_MATCHING_2256, 1, NID_sha256
127 },
128 {
129 DANETLS_MATCHING_2512, 2, NID_sha512
130 },
919ba009
VD		 131};
132
133static int dane_ctx_enable(struct dane_ctx_st *dctx)
134{
135 const EVP_MD **mdevp;
136 uint8_t *mdord;
137 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 138 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 139 size_t i;
140
5ae4ceb9
VD		 141 if (dctx->mdevp != NULL)
142 return 1;
143
919ba009
VD		 144 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
145 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
146
147 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 148 OPENSSL_free(mdord);
919ba009
VD		 149 OPENSSL_free(mdevp);
150 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
151 return 0;
152 }
153
154 /* Install default entries */
155 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
156 const EVP_MD *md;
157
158 if (dane_mds[i].nid == NID_undef ||
159 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
160 continue;
161 mdevp[dane_mds[i].mtype] = md;
162 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
163 }
164
165 dctx->mdevp = mdevp;
166 dctx->mdord = mdord;
167 dctx->mdmax = mdmax;
168
169 return 1;
170}
171
172static void dane_ctx_final(struct dane_ctx_st *dctx)
173{
174 OPENSSL_free(dctx->mdevp);
175 dctx->mdevp = NULL;
176
177 OPENSSL_free(dctx->mdord);
178 dctx->mdord = NULL;
179 dctx->mdmax = 0;
180}
181
182static void tlsa_free(danetls_record *t)
183{
184 if (t == NULL)
185 return;
186 OPENSSL_free(t->data);
187 EVP_PKEY_free(t->spki);
188 OPENSSL_free(t);
189}
190
b9aec69a 191static void dane_final(SSL_DANE *dane)
919ba009
VD		 192{
193 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
194 dane->trecs = NULL;
195
196 sk_X509_pop_free(dane->certs, X509_free);
197 dane->certs = NULL;
198
199 X509_free(dane->mcert);
200 dane->mcert = NULL;
201 dane->mtlsa = NULL;
202 dane->mdpth = -1;
203 dane->pdpth = -1;
204}
205
206/*
207 * dane_copy - Copy dane configuration, sans verification state.
208 */
209static int ssl_dane_dup(SSL *to, SSL *from)
210{
211 int num;
212 int i;
213
214 if (!DANETLS_ENABLED(&from->dane))
215 return 1;
216
e431363f 217 num = sk_danetls_record_num(from->dane.trecs);
919ba009 218 dane_final(&to->dane);
5ae4ceb9 219 to->dane.flags = from->dane.flags;
9f6b22b8 220 to->dane.dctx = &to->ctx->dane;
7a908204 221 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 222
223 if (to->dane.trecs == NULL) {
224 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
225 return 0;
226 }
919ba009 227
919ba009
VD		 228 for (i = 0; i < num; ++i) {
229 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 230
919ba009
VD		 231 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
232 t->data, t->dlen) <= 0)
233 return 0;
234 }
235 return 1;
236}
237
a230b26e
EK		 238static int dane_mtype_set(struct dane_ctx_st *dctx,
239 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 240{
241 int i;
242
243 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
a230b26e 244 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 245 return 0;
246 }
247
248 if (mtype > dctx->mdmax) {
249 const EVP_MD **mdevp;
250 uint8_t *mdord;
a230b26e 251 int n = ((int)mtype) + 1;
919ba009
VD		 252
253 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
254 if (mdevp == NULL) {
255 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
256 return -1;
257 }
258 dctx->mdevp = mdevp;
259
260 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
261 if (mdord == NULL) {
262 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
263 return -1;
264 }
265 dctx->mdord = mdord;
266
267 /* Zero-fill any gaps */
a230b26e 268 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 269 mdevp[i] = NULL;
270 mdord[i] = 0;
271 }
272
273 dctx->mdmax = mtype;
274 }
275
276 dctx->mdevp[mtype] = md;
277 /* Coerce ordinal of disabled matching types to 0 */
278 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
279
280 return 1;
281}
282
b9aec69a 283static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 284{
285 if (mtype > dane->dctx->mdmax)
286 return NULL;
287 return dane->dctx->mdevp[mtype];
288}
289
a230b26e
EK		 290static int dane_tlsa_add(SSL_DANE *dane,
291 uint8_t usage,
292 uint8_t selector,
a41a6120 293 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 294{
295 danetls_record *t;
296 const EVP_MD *md = NULL;
297 int ilen = (int)dlen;
298 int i;
9f6b22b8 299 int num;
919ba009
VD		 300
301 if (dane->trecs == NULL) {
302 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
303 return -1;
304 }
305
306 if (ilen < 0 || dlen != (size_t)ilen) {
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
308 return 0;
309 }
310
311 if (usage > DANETLS_USAGE_LAST) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
313 return 0;
314 }
315
316 if (selector > DANETLS_SELECTOR_LAST) {
317 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
318 return 0;
319 }
320
321 if (mtype != DANETLS_MATCHING_FULL) {
322 md = tlsa_md_get(dane, mtype);
323 if (md == NULL) {
324 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
325 return 0;
326 }
327 }
328
329 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
330 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
331 return 0;
332 }
333 if (!data) {
334 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
335 return 0;
336 }
337
338 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
340 return -1;
341 }
342
343 t->usage = usage;
344 t->selector = selector;
345 t->mtype = mtype;
348240c6 346 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 347 if (t->data == NULL) {
348 tlsa_free(t);
349 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
350 return -1;
351 }
348240c6
MC		 352 memcpy(t->data, data, dlen);
353 t->dlen = dlen;
919ba009
VD		 354
355 /* Validate and cache full certificate or public key */
356 if (mtype == DANETLS_MATCHING_FULL) {
357 const unsigned char *p = data;
358 X509 *cert = NULL;
359 EVP_PKEY *pkey = NULL;
360
361 switch (selector) {
362 case DANETLS_SELECTOR_CERT:
348240c6 363 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 364 dlen != (size_t)(p - data)) {
365 tlsa_free(t);
366 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
367 return 0;
368 }
369 if (X509_get0_pubkey(cert) == NULL) {
370 tlsa_free(t);
371 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
372 return 0;
373 }
374
375 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
376 X509_free(cert);
377 break;
378 }
379
380 /*
381 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
382 * records that contain full certificates of trust-anchors that are
383 * not present in the wire chain. For usage PKIX-TA(0), we augment
384 * the chain with untrusted Full(0) certificates from DNS, in case
385 * they are missing from the chain.
386 */
387 if ((dane->certs == NULL &&
388 (dane->certs = sk_X509_new_null()) == NULL) ||
389 !sk_X509_push(dane->certs, cert)) {
390 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
391 X509_free(cert);
392 tlsa_free(t);
393 return -1;
394 }
395 break;
396
397 case DANETLS_SELECTOR_SPKI:
348240c6 398 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 399 dlen != (size_t)(p - data)) {
400 tlsa_free(t);
401 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
402 return 0;
403 }
404
405 /*
406 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
407 * records that contain full bare keys of trust-anchors that are
408 * not present in the wire chain.
409 */
410 if (usage == DANETLS_USAGE_DANE_TA)
411 t->spki = pkey;
412 else
413 EVP_PKEY_free(pkey);
414 break;
415 }
416 }
417
418 /*-
419 * Find the right insertion point for the new record.
420 *
421 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
422 * they can be processed first, as they require no chain building, and no
423 * expiration or hostname checks. Because DANE-EE(3) is numerically
424 * largest, this is accomplished via descending sort by "usage".
425 *
426 * We also sort in descending order by matching ordinal to simplify
427 * the implementation of digest agility in the verification code.
428 *
429 * The choice of order for the selector is not significant, so we
430 * use the same descending order for consistency.
431 */
9f6b22b8
VD		 432 num = sk_danetls_record_num(dane->trecs);
433 for (i = 0; i < num; ++i) {
919ba009 434 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 435
919ba009
VD		 436 if (rec->usage > usage)
437 continue;
438 if (rec->usage < usage)
439 break;
440 if (rec->selector > selector)
441 continue;
442 if (rec->selector < selector)
443 break;
444 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
445 continue;
446 break;
447 }
448
449 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
450 tlsa_free(t);
451 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
452 return -1;
453 }
454 dane->umask |= DANETLS_USAGE_BIT(usage);
455
456 return 1;
457}
458
c8feba72
BK		 459/*
460 * Return 0 if there is only one version configured and it was disabled
461 * at configure time. Return 1 otherwise.
462 */
463static int ssl_check_allowed_versions(int min_version, int max_version)
464{
465 int minisdtls = 0, maxisdtls = 0;
466
467 /* Figure out if we're doing DTLS versions or TLS versions */
468 if (min_version == DTLS1_BAD_VER
469 || min_version >> 8 == DTLS1_VERSION_MAJOR)
470 minisdtls = 1;
471 if (max_version == DTLS1_BAD_VER
472 || max_version >> 8 == DTLS1_VERSION_MAJOR)
473 maxisdtls = 1;
474 /* A wildcard version of 0 could be DTLS or TLS. */
475 if ((minisdtls && !maxisdtls && max_version != 0)
476 || (maxisdtls && !minisdtls && min_version != 0)) {
477 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
478 return 0;
479 }
480
481 if (minisdtls || maxisdtls) {
482 /* Do DTLS version checks. */
483 if (min_version == 0)
484 /* Ignore DTLS1_BAD_VER */
485 min_version = DTLS1_VERSION;
486 if (max_version == 0)
487 max_version = DTLS1_2_VERSION;
488#ifdef OPENSSL_NO_DTLS1_2
489 if (max_version == DTLS1_2_VERSION)
490 max_version = DTLS1_VERSION;
491#endif
492#ifdef OPENSSL_NO_DTLS1
493 if (min_version == DTLS1_VERSION)
494 min_version = DTLS1_2_VERSION;
495#endif
79b4444d
DMSP		 496 /* Done massaging versions; do the check. */
497 if (0
c8feba72
BK		 498#ifdef OPENSSL_NO_DTLS1
499 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
500 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
501#endif
502#ifdef OPENSSL_NO_DTLS1_2
503 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
504 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
505#endif
506 )
507 return 0;
508 } else {
509 /* Regular TLS version checks. */
79b4444d
DMSP		 510 if (min_version == 0)
511 min_version = SSL3_VERSION;
512 if (max_version == 0)
513 max_version = TLS1_3_VERSION;
c8feba72 514#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 515 if (max_version == TLS1_3_VERSION)
516 max_version = TLS1_2_VERSION;
c8feba72
BK		 517#endif
518#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 519 if (max_version == TLS1_2_VERSION)
520 max_version = TLS1_1_VERSION;
c8feba72
BK		 521#endif
522#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 523 if (max_version == TLS1_1_VERSION)
524 max_version = TLS1_VERSION;
c8feba72
BK		 525#endif
526#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 527 if (max_version == TLS1_VERSION)
528 max_version = SSL3_VERSION;
c8feba72
BK		 529#endif
530#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 531 if (min_version == SSL3_VERSION)
532 min_version = TLS1_VERSION;
c8feba72
BK		 533#endif
534#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 535 if (min_version == TLS1_VERSION)
536 min_version = TLS1_1_VERSION;
c8feba72
BK		 537#endif
538#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 539 if (min_version == TLS1_1_VERSION)
540 min_version = TLS1_2_VERSION;
c8feba72
BK		 541#endif
542#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 543 if (min_version == TLS1_2_VERSION)
544 min_version = TLS1_3_VERSION;
c8feba72 545#endif
79b4444d
DMSP		 546 /* Done massaging versions; do the check. */
547 if (0
c8feba72
BK		 548#ifdef OPENSSL_NO_SSL3
549 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
550#endif
551#ifdef OPENSSL_NO_TLS1
552 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
553#endif
554#ifdef OPENSSL_NO_TLS1_1
555 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
556#endif
557#ifdef OPENSSL_NO_TLS1_2
558 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
559#endif
560#ifdef OPENSSL_NO_TLS1_3
561 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
562#endif
563 )
564 return 0;
565 }
566 return 1;
567}
568
d31fb0b5
RS		 569static void clear_ciphers(SSL *s)
570{
571 /* clear the current cipher */
572 ssl_clear_cipher_ctx(s);
573 ssl_clear_hash_ctx(&s->read_hash);
574 ssl_clear_hash_ctx(&s->write_hash);
575}
576
4f43d0e7 577int SSL_clear(SSL *s)
0f113f3e 578{
0f113f3e
MC		 579 if (s->method == NULL) {
580 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 581 return 0;
0f113f3e 582 }
d02b48c6 583
0f113f3e
MC		 584 if (ssl_clear_bad_session(s)) {
585 SSL_SESSION_free(s->session);
586 s->session = NULL;
587 }
9368f865
MC		 588 SSL_SESSION_free(s->psksession);
589 s->psksession = NULL;
add8d0e9
MC		 590 OPENSSL_free(s->psksession_id);
591 s->psksession_id = NULL;
592 s->psksession_id_len = 0;
808d1601 593 s->hello_retry_request = 0;
36ff232c 594 s->sent_tickets = 0;
d62bfb39 595
0f113f3e
MC		 596 s->error = 0;
597 s->hit = 0;
598 s->shutdown = 0;
d02b48c6 599
0f113f3e
MC		 600 if (s->renegotiate) {
601 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
602 return 0;
603 }
d02b48c6 604
fe3a3291 605 ossl_statem_clear(s);
413c4f45 606
0f113f3e
MC		 607 s->version = s->method->version;
608 s->client_version = s->version;
609 s->rwstate = SSL_NOTHING;
d02b48c6 610
25aaa98a
RS		 611 BUF_MEM_free(s->init_buf);
612 s->init_buf = NULL;
d31fb0b5 613 clear_ciphers(s);
0f113f3e 614 s->first_packet = 0;
d02b48c6 615
44c04a2e
MC		 616 s->key_update = SSL_KEY_UPDATE_NONE;
617
88834998
TS		 618 EVP_MD_CTX_free(s->pha_dgst);
619 s->pha_dgst = NULL;
620
919ba009
VD		 621 /* Reset DANE verification result state */
622 s->dane.mdpth = -1;
623 s->dane.pdpth = -1;
624 X509_free(s->dane.mcert);
625 s->dane.mcert = NULL;
626 s->dane.mtlsa = NULL;
627
628 /* Clear the verification result peername */
629 X509_VERIFY_PARAM_move_peername(s->param, NULL);
630
0f113f3e
MC		 631 /*
632 * Check to see if we were changed into a different method, if so, revert
24252537 633 * back.
0f113f3e 634 */
24252537 635 if (s->method != s->ctx->method) {
0f113f3e
MC		 636 s->method->ssl_free(s);
637 s->method = s->ctx->method;
638 if (!s->method->ssl_new(s))
a89325e4 639 return 0;
b77f3ed1
MC		 640 } else {
641 if (!s->method->ssl_clear(s))
642 return 0;
643 }
33d23b87 644
af9752e5 645 RECORD_LAYER_clear(&s->rlayer);
33d23b87 646
a89325e4 647 return 1;
0f113f3e 648}
d02b48c6 649
4f43d0e7 650/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 651int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
652{
653 STACK_OF(SSL_CIPHER) *sk;
654
655 ctx->method = meth;
656
f865b081
MC		 657 sk = ssl_create_cipher_list(ctx->method,
658 ctx->tls13_ciphersuites,
659 &(ctx->cipher_list),
0f113f3e
MC		 660 &(ctx->cipher_list_by_id),
661 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
662 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 663 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 664 return 0;
0f113f3e 665 }
208fb891 666 return 1;
0f113f3e 667}
d02b48c6 668
4f43d0e7 669SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 670{
671 SSL *s;
672
673 if (ctx == NULL) {
674 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 675 return NULL;
0f113f3e
MC		 676 }
677 if (ctx->method == NULL) {
678 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 679 return NULL;
0f113f3e
MC		 680 }
681
b51bce94 682 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 683 if (s == NULL)
684 goto err;
0f113f3e 685
e6b10c34 686 s->references = 1;
16203f7b 687 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 688 if (s->lock == NULL) {
689 OPENSSL_free(s);
690 s = NULL;
ae3947de 691 goto err;
e6b10c34 692 }
ae3947de 693
c036e210 694 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 695
0f113f3e 696 s->options = ctx->options;
5ae4ceb9 697 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 698 s->min_proto_version = ctx->min_proto_version;
699 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 700 s->mode = ctx->mode;
701 s->max_cert_list = ctx->max_cert_list;
3fc8d856 702 s->max_early_data = ctx->max_early_data;
4e8548e8 703 s->recv_max_early_data = ctx->recv_max_early_data;
9d0a8bb7 704 s->num_tickets = ctx->num_tickets;
0f113f3e 705
f865b081
MC		 706 /* Shallow copy of the ciphersuites stack */
707 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
708 if (s->tls13_ciphersuites == NULL)
709 goto err;
710
2c382349
KR		 711 /*
712 * Earlier library versions used to copy the pointer to the CERT, not
713 * its contents; only when setting new parameters for the per-SSL
714 * copy, ssl_cert_new would be called (and the direct reference to
715 * the per-SSL_CTX settings would be lost, but those still were
716 * indirectly accessed for various purposes, and for that reason they
717 * used to be known as s->ctx->default_cert). Now we don't look at the
718 * SSL_CTX's CERT after having duplicated it once.
719 */
720 s->cert = ssl_cert_dup(ctx->cert);
721 if (s->cert == NULL)
722 goto err;
0f113f3e 723
52e1d7b1 724 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 725 s->msg_callback = ctx->msg_callback;
726 s->msg_callback_arg = ctx->msg_callback_arg;
727 s->verify_mode = ctx->verify_mode;
728 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 729 s->record_padding_cb = ctx->record_padding_cb;
730 s->record_padding_arg = ctx->record_padding_arg;
731 s->block_padding = ctx->block_padding;
0f113f3e 732 s->sid_ctx_length = ctx->sid_ctx_length;
cbe29648 733 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
380a522f 734 goto err;
0f113f3e
MC		 735 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
736 s->verify_callback = ctx->default_verify_callback;
737 s->generate_session_id = ctx->generate_session_id;
738
739 s->param = X509_VERIFY_PARAM_new();
a71edf3b 740 if (s->param == NULL)
0f113f3e
MC		 741 goto err;
742 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e 743 s->quiet_shutdown = ctx->quiet_shutdown;
cf72c757
F		 744
745 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
0f113f3e 746 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 747 s->split_send_fragment = ctx->split_send_fragment;
748 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 749 if (s->max_pipelines > 1)
750 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 751 if (ctx->default_read_buf_len > 0)
752 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 753
16203f7b 754 SSL_CTX_up_ref(ctx);
0f113f3e 755 s->ctx = ctx;
aff8c126
RS		 756 s->ext.debug_cb = 0;
757 s->ext.debug_arg = NULL;
758 s->ext.ticket_expected = 0;
759 s->ext.status_type = ctx->ext.status_type;
760 s->ext.status_expected = 0;
761 s->ext.ocsp.ids = NULL;
762 s->ext.ocsp.exts = NULL;
763 s->ext.ocsp.resp = NULL;
764 s->ext.ocsp.resp_len = 0;
16203f7b 765 SSL_CTX_up_ref(ctx);
222da979 766 s->session_ctx = ctx;
a230b26e 767#ifndef OPENSSL_NO_EC
aff8c126
RS		 768 if (ctx->ext.ecpointformats) {
769 s->ext.ecpointformats =
770 OPENSSL_memdup(ctx->ext.ecpointformats,
771 ctx->ext.ecpointformats_len);
772 if (!s->ext.ecpointformats)
0f113f3e 773 goto err;
aff8c126
RS		 774 s->ext.ecpointformats_len =
775 ctx->ext.ecpointformats_len;
776 }
777 if (ctx->ext.supportedgroups) {
778 s->ext.supportedgroups =
779 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 780 ctx->ext.supportedgroups_len
b92d7b62 781 * sizeof(*ctx->ext.supportedgroups));
aff8c126 782 if (!s->ext.supportedgroups)
0f113f3e 783 goto err;
aff8c126 784 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 785 }
a230b26e
EK		 786#endif
787#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 788 s->ext.npn = NULL;
a230b26e 789#endif
6f017a8f 790
aff8c126
RS		 791 if (s->ctx->ext.alpn) {
792 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
793 if (s->ext.alpn == NULL)
0f113f3e 794 goto err;
aff8c126
RS		 795 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
796 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 797 }
d02b48c6 798
696178ed 799 s->verified_chain = NULL;
0f113f3e 800 s->verify_result = X509_V_OK;
d02b48c6 801
a974e64a
MC		 802 s->default_passwd_callback = ctx->default_passwd_callback;
803 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
804
0f113f3e 805 s->method = ctx->method;
d02b48c6 806
44c04a2e
MC		 807 s->key_update = SSL_KEY_UPDATE_NONE;
808
c9598459
MC		 809 s->allow_early_data_cb = ctx->allow_early_data_cb;
810 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
811
0f113f3e
MC		 812 if (!s->method->ssl_new(s))
813 goto err;
d02b48c6 814
0f113f3e 815 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 816
61986d32 817 if (!SSL_clear(s))
69f68237 818 goto err;
58964a49 819
25a807bc
F		 820 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
821 goto err;
58964a49 822
ddac1974 823#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 824 s->psk_client_callback = ctx->psk_client_callback;
825 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 826#endif
f46184bd
MC		 827 s->psk_find_session_cb = ctx->psk_find_session_cb;
828 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 829
07bbc92c
MC		 830 s->job = NULL;
831
ed29e82a
RP		 832#ifndef OPENSSL_NO_CT
833 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 834 ctx->ct_validation_callback_arg))
ed29e82a
RP		 835 goto err;
836#endif
837
16203f7b 838 return s;
0f113f3e 839 err:
62adbcee 840 SSL_free(s);
0f113f3e 841 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 842 return NULL;
0f113f3e 843}
d02b48c6 844
e417070c
RS		 845int SSL_is_dtls(const SSL *s)
846{
847 return SSL_IS_DTLS(s) ? 1 : 0;
848}
849
c5ebfcab 850int SSL_up_ref(SSL *s)
a18a31e4 851{
16203f7b 852 int i;
c5ebfcab 853
2f545ae4 854 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 855 return 0;
856
857 REF_PRINT_COUNT("SSL", s);
858 REF_ASSERT_ISNT(i < 2);
859 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 860}
861
0f113f3e
MC		 862int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
863 unsigned int sid_ctx_len)
864{
cbe29648 865 if (sid_ctx_len > sizeof(ctx->sid_ctx)) {
0f113f3e
MC		 866 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
867 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
868 return 0;
869 }
870 ctx->sid_ctx_length = sid_ctx_len;
871 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 872
873 return 1;
0f113f3e 874}
4eb77b26 875
0f113f3e
MC		 876int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
877 unsigned int sid_ctx_len)
878{
879 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
880 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
881 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
882 return 0;
883 }
884 ssl->sid_ctx_length = sid_ctx_len;
885 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 886
887 return 1;
0f113f3e 888}
b4cadc6e 889
dc644fe2 890int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 891{
16203f7b 892 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 893 ctx->generate_session_id = cb;
16203f7b 894 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 895 return 1;
896}
dc644fe2
GT		 897
898int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 899{
16203f7b 900 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 901 ssl->generate_session_id = cb;
16203f7b 902 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 903 return 1;
904}
dc644fe2 905
f85c9904 906int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 907 unsigned int id_len)
908{
909 /*
910 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 911 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 912 * find if there's a session in the hash table that would conflict with
913 * any new session built out of this id/id_len and the ssl_version in use
914 * by this SSL.
915 */
916 SSL_SESSION r, *p;
917
cbe29648 918 if (id_len > sizeof(r.session_id))
0f113f3e
MC		 919 return 0;
920
921 r.ssl_version = ssl->version;
922 r.session_id_length = id_len;
923 memcpy(r.session_id, id, id_len);
924
e2bb9b9b
TS		 925 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
926 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
927 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 928 return (p != NULL);
929}
dc644fe2 930
bb7cd4e3 931int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 932{
933 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
934}
bb7cd4e3
DSH		 935
936int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 937{
938 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
939}
926a56bf 940
bb7cd4e3 941int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 942{
943 return X509_VERIFY_PARAM_set_trust(s->param, trust);
944}
bb7cd4e3
DSH		 945
946int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 947{
948 return X509_VERIFY_PARAM_set_trust(s->param, trust);
949}
bb7cd4e3 950
919ba009
VD		 951int SSL_set1_host(SSL *s, const char *hostname)
952{
953 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
954}
955
956int SSL_add1_host(SSL *s, const char *hostname)
957{
958 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
959}
960
961void SSL_set_hostflags(SSL *s, unsigned int flags)
962{
963 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
964}
965
4588cb44 966const char *SSL_get0_peername(SSL *s)
919ba009
VD		 967{
968 return X509_VERIFY_PARAM_get0_peername(s->param);
969}
970
971int SSL_CTX_dane_enable(SSL_CTX *ctx)
972{
973 return dane_ctx_enable(&ctx->dane);
974}
975
5ae4ceb9
VD		 976unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
977{
978 unsigned long orig = ctx->dane.flags;
979
980 ctx->dane.flags |= flags;
981 return orig;
982}
983
984unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
985{
986 unsigned long orig = ctx->dane.flags;
987
988 ctx->dane.flags &= ~flags;
989 return orig;
990}
991
919ba009
VD		 992int SSL_dane_enable(SSL *s, const char *basedomain)
993{
b9aec69a 994 SSL_DANE *dane = &s->dane;
919ba009
VD		 995
996 if (s->ctx->dane.mdmax == 0) {
997 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
998 return 0;
999 }
1000 if (dane->trecs != NULL) {
1001 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1002 return 0;
1003 }
1004
8d887efa
VD		 1005 /*
1006 * Default SNI name. This rejects empty names, while set1_host below
1007 * accepts them and disables host name checks. To avoid side-effects with
1008 * invalid input, set the SNI name first.
1009 */
aff8c126 1010 if (s->ext.hostname == NULL) {
dccd20d1 1011 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 1012 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 1013 return -1;
8d887efa
VD		 1014 }
1015 }
1016
919ba009
VD		 1017 /* Primary RFC6125 reference identifier */
1018 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1019 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1020 return -1;
1021 }
1022
919ba009
VD		 1023 dane->mdpth = -1;
1024 dane->pdpth = -1;
1025 dane->dctx = &s->ctx->dane;
1026 dane->trecs = sk_danetls_record_new_null();
1027
1028 if (dane->trecs == NULL) {
1029 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1030 return -1;
1031 }
1032 return 1;
1033}
1034
5ae4ceb9
VD		 1035unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1036{
1037 unsigned long orig = ssl->dane.flags;
1038
1039 ssl->dane.flags |= flags;
1040 return orig;
1041}
1042
1043unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1044{
1045 unsigned long orig = ssl->dane.flags;
1046
1047 ssl->dane.flags &= ~flags;
1048 return orig;
1049}
1050
919ba009
VD		 1051int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1052{
b9aec69a 1053 SSL_DANE *dane = &s->dane;
919ba009 1054
c0a445a9 1055 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1056 return -1;
1057 if (dane->mtlsa) {
1058 if (mcert)
1059 *mcert = dane->mcert;
1060 if (mspki)
1061 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1062 }
1063 return dane->mdpth;
1064}
1065
1066int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1067 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1068{
b9aec69a 1069 SSL_DANE *dane = &s->dane;
919ba009 1070
c0a445a9 1071 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1072 return -1;
1073 if (dane->mtlsa) {
1074 if (usage)
1075 *usage = dane->mtlsa->usage;
1076 if (selector)
1077 *selector = dane->mtlsa->selector;
1078 if (mtype)
1079 *mtype = dane->mtlsa->mtype;
1080 if (data)
1081 *data = dane->mtlsa->data;
1082 if (dlen)
1083 *dlen = dane->mtlsa->dlen;
1084 }
1085 return dane->mdpth;
1086}
1087
b9aec69a 1088SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1089{
1090 return &s->dane;
1091}
1092
1093int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
a41a6120 1094 uint8_t mtype, unsigned const char *data, size_t dlen)
919ba009
VD		 1095{
1096 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1097}
1098
a230b26e
EK		 1099int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1100 uint8_t ord)
919ba009
VD		 1101{
1102 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1103}
1104
ccf11751 1105int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1106{
1107 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1108}
ccf11751
DSH		 1109
1110int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1111{
1112 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1113}
ccf11751 1114
7af31968 1115X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1116{
1117 return ctx->param;
1118}
7af31968
DSH		 1119
1120X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1121{
1122 return ssl->param;
1123}
7af31968 1124
a5ee80b9 1125void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1126{
1127 ssl_cert_clear_certs(s->cert);
1128}
a5ee80b9 1129
4f43d0e7 1130void SSL_free(SSL *s)
0f113f3e
MC		 1131{
1132 int i;
58964a49 1133
e6e9170d
RS		 1134 if (s == NULL)
1135 return;
2f545ae4 1136 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1137 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1138 if (i > 0)
1139 return;
f3f1cf84 1140 REF_ASSERT_ISNT(i < 0);
d02b48c6 1141
222561fe 1142 X509_VERIFY_PARAM_free(s->param);
919ba009 1143 dane_final(&s->dane);
0f113f3e
MC		 1144 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1145
b77f3ed1 1146 /* Ignore return value */
2e7dc7cd
MC		 1147 ssl_free_wbio_buffer(s);
1148
65e2d672 1149 BIO_free_all(s->wbio);
325cfa85 1150 BIO_free_all(s->rbio);
0f113f3e 1151
25aaa98a 1152 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1153
1154 /* add extra stuff */
25aaa98a
RS		 1155 sk_SSL_CIPHER_free(s->cipher_list);
1156 sk_SSL_CIPHER_free(s->cipher_list_by_id);
f865b081 1157 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
0f113f3e
MC		 1158
1159 /* Make the next call work :-) */
1160 if (s->session != NULL) {
1161 ssl_clear_bad_session(s);
1162 SSL_SESSION_free(s->session);
1163 }
9368f865 1164 SSL_SESSION_free(s->psksession);
add8d0e9 1165 OPENSSL_free(s->psksession_id);
0f113f3e 1166
d31fb0b5 1167 clear_ciphers(s);
d02b48c6 1168
e0e920b1 1169 ssl_cert_free(s->cert);
0f113f3e 1170 /* Free up if allocated */
d02b48c6 1171
aff8c126 1172 OPENSSL_free(s->ext.hostname);
222da979 1173 SSL_CTX_free(s->session_ctx);
e481f9b9 1174#ifndef OPENSSL_NO_EC
aff8c126
RS		 1175 OPENSSL_free(s->ext.ecpointformats);
1176 OPENSSL_free(s->ext.supportedgroups);
a230b26e 1177#endif /* OPENSSL_NO_EC */
aff8c126 1178 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1179#ifndef OPENSSL_NO_OCSP
aff8c126 1180 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1181#endif
ed29e82a
RP		 1182#ifndef OPENSSL_NO_CT
1183 SCT_LIST_free(s->scts);
aff8c126 1184 OPENSSL_free(s->ext.scts);
ed29e82a 1185#endif
aff8c126
RS		 1186 OPENSSL_free(s->ext.ocsp.resp);
1187 OPENSSL_free(s->ext.alpn);
cfef5027 1188 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1189 OPENSSL_free(s->clienthello);
9d75dce3
TS		 1190 OPENSSL_free(s->pha_context);
1191 EVP_MD_CTX_free(s->pha_dgst);
0f113f3e 1192
fa7c2637 1193 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
0f113f3e 1194
696178ed
DSH		 1195 sk_X509_pop_free(s->verified_chain, X509_free);
1196
0f113f3e
MC		 1197 if (s->method != NULL)
1198 s->method->ssl_free(s);
1199
f161995e 1200 RECORD_LAYER_release(&s->rlayer);
33d23b87 1201
e0e920b1 1202 SSL_CTX_free(s->ctx);
7c3908dd 1203
ff75a257
MC		 1204 ASYNC_WAIT_CTX_free(s->waitctx);
1205
e481f9b9 1206#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1207 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1208#endif
1209
e783bae2 1210#ifndef OPENSSL_NO_SRTP
25aaa98a 1211 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1212#endif
1213
16203f7b
AG		 1214 CRYPTO_THREAD_lock_free(s->lock);
1215
0f113f3e
MC		 1216 OPENSSL_free(s);
1217}
1218
65e2d672 1219void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1220{
65e2d672 1221 BIO_free_all(s->rbio);
3ffbe008
MC		 1222 s->rbio = rbio;
1223}
1224
65e2d672 1225void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1226{
1227 /*
1228 * If the output buffering BIO is still in place, remove it
1229 */
2e7dc7cd
MC		 1230 if (s->bbio != NULL)
1231 s->wbio = BIO_pop(s->wbio);
1232
65e2d672 1233 BIO_free_all(s->wbio);
0f113f3e 1234 s->wbio = wbio;
2e7dc7cd
MC		 1235
1236 /* Re-attach |bbio| to the new |wbio|. */
1237 if (s->bbio != NULL)
1238 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1239}
d02b48c6 1240
3ffbe008
MC		 1241void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1242{
65e2d672
MC		 1243 /*
1244 * For historical reasons, this function has many different cases in
1245 * ownership handling.
1246 */
1247
1248 /* If nothing has changed, do nothing */
1249 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1250 return;
1251
1252 /*
1253 * If the two arguments are equal then one fewer reference is granted by the
1254 * caller than we want to take
1255 */
1256 if (rbio != NULL && rbio == wbio)
1257 BIO_up_ref(rbio);
1258
1259 /*
1260 * If only the wbio is changed only adopt one reference.
1261 */
1262 if (rbio == SSL_get_rbio(s)) {
1263 SSL_set0_wbio(s, wbio);
1264 return;
1265 }
1266 /*
1267 * There is an asymmetry here for historical reasons. If only the rbio is
1268 * changed AND the rbio and wbio were originally different, then we only
1269 * adopt one reference.
1270 */
1271 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1272 SSL_set0_rbio(s, rbio);
1273 return;
1274 }
1275
1276 /* Otherwise, adopt both references. */
1277 SSL_set0_rbio(s, rbio);
1278 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1279}
1280
0821bcd4 1281BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1282{
2e7dc7cd 1283 return s->rbio;
0f113f3e 1284}
d02b48c6 1285
0821bcd4 1286BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1287{
2e7dc7cd
MC		 1288 if (s->bbio != NULL) {
1289 /*
1290 * If |bbio| is active, the true caller-configured BIO is its
1291 * |next_bio|.
1292 */
1293 return BIO_next(s->bbio);
1294 }
1295 return s->wbio;
0f113f3e 1296}
d02b48c6 1297
0821bcd4 1298int SSL_get_fd(const SSL *s)
0f113f3e 1299{
2e7dc7cd 1300 return SSL_get_rfd(s);
0f113f3e 1301}
24cbf3ef 1302
0821bcd4 1303int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1304{
1305 int ret = -1;
1306 BIO *b, *r;
1307
1308 b = SSL_get_rbio(s);
1309 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1310 if (r != NULL)
1311 BIO_get_fd(r, &ret);
26a7d938 1312 return ret;
0f113f3e 1313}
d02b48c6 1314
0821bcd4 1315int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1316{
1317 int ret = -1;
1318 BIO *b, *r;
1319
1320 b = SSL_get_wbio(s);
1321 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1322 if (r != NULL)
1323 BIO_get_fd(r, &ret);
26a7d938 1324 return ret;
0f113f3e 1325}
24cbf3ef 1326
bc36ee62 1327#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1328int SSL_set_fd(SSL *s, int fd)
1329{
1330 int ret = 0;
1331 BIO *bio = NULL;
1332
1333 bio = BIO_new(BIO_s_socket());
1334
1335 if (bio == NULL) {
1336 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1337 goto err;
1338 }
1339 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1340 SSL_set_bio(s, bio, bio);
1341 ret = 1;
1342 err:
26a7d938 1343 return ret;
0f113f3e 1344}
d02b48c6 1345
0f113f3e
MC		 1346int SSL_set_wfd(SSL *s, int fd)
1347{
2e7dc7cd 1348 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1349
2e7dc7cd
MC		 1350 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1351 || (int)BIO_get_fd(rbio, NULL) != fd) {
1352 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1353
1354 if (bio == NULL) {
1355 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1356 return 0;
0f113f3e
MC		 1357 }
1358 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1359 SSL_set0_wbio(s, bio);
2e7dc7cd 1360 } else {
65e2d672
MC		 1361 BIO_up_ref(rbio);
1362 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1363 }
1364 return 1;
0f113f3e
MC		 1365}
1366
1367int SSL_set_rfd(SSL *s, int fd)
1368{
2e7dc7cd 1369 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1370
2e7dc7cd
MC		 1371 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1372 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1373 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1374
1375 if (bio == NULL) {
1376 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1377 return 0;
0f113f3e
MC		 1378 }
1379 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1380 SSL_set0_rbio(s, bio);
2e7dc7cd 1381 } else {
65e2d672
MC		 1382 BIO_up_ref(wbio);
1383 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1384 }
1385
1386 return 1;
0f113f3e
MC		 1387}
1388#endif
ca03109c
BM		 1389
1390/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1391size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1392{
1393 size_t ret = 0;
1394
1395 if (s->s3 != NULL) {
1396 ret = s->s3->tmp.finish_md_len;
1397 if (count > ret)
1398 count = ret;
1399 memcpy(buf, s->s3->tmp.finish_md, count);
1400 }
1401 return ret;
1402}
ca03109c
BM		 1403
1404/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1405size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1406{
1407 size_t ret = 0;
ca03109c 1408
0f113f3e
MC		 1409 if (s->s3 != NULL) {
1410 ret = s->s3->tmp.peer_finish_md_len;
1411 if (count > ret)
1412 count = ret;
1413 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1414 }
1415 return ret;
1416}
ca03109c 1417
0821bcd4 1418int SSL_get_verify_mode(const SSL *s)
0f113f3e 1419{
26a7d938 1420 return s->verify_mode;
0f113f3e 1421}
d02b48c6 1422
0821bcd4 1423int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1424{
1425 return X509_VERIFY_PARAM_get_depth(s->param);
1426}
7f89714e 1427
0f113f3e 1428int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1429 return s->verify_callback;
0f113f3e 1430}
d02b48c6 1431
0821bcd4 1432int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1433{
26a7d938 1434 return ctx->verify_mode;
0f113f3e 1435}
d02b48c6 1436
0821bcd4 1437int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1438{
1439 return X509_VERIFY_PARAM_get_depth(ctx->param);
1440}
1441
1442int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1443 return ctx->default_verify_callback;
0f113f3e
MC		 1444}
1445
1446void SSL_set_verify(SSL *s, int mode,
1447 int (*callback) (int ok, X509_STORE_CTX *ctx))
1448{
1449 s->verify_mode = mode;
1450 if (callback != NULL)
1451 s->verify_callback = callback;
1452}
1453
1454void SSL_set_verify_depth(SSL *s, int depth)
1455{
1456 X509_VERIFY_PARAM_set_depth(s->param, depth);
1457}
1458
1459void SSL_set_read_ahead(SSL *s, int yes)
1460{
52e1d7b1 1461 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1462}
d02b48c6 1463
0821bcd4 1464int SSL_get_read_ahead(const SSL *s)
0f113f3e 1465{
52e1d7b1 1466 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1467}
d02b48c6 1468
0821bcd4 1469int SSL_pending(const SSL *s)
0f113f3e 1470{
8b0e934a
MC		 1471 size_t pending = s->method->ssl_pending(s);
1472
0f113f3e
MC		 1473 /*
1474 * SSL_pending cannot work properly if read-ahead is enabled
1475 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1476 * impossible to fix since SSL_pending cannot report errors that may be
1477 * observed while scanning the new data. (Note that SSL_pending() is
1478 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1479 *
1480 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1481 * we just return INT_MAX.
0f113f3e 1482 */
348240c6 1483 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1484}
d02b48c6 1485
49580f25
MC		 1486int SSL_has_pending(const SSL *s)
1487{
1488 /*
1489 * Similar to SSL_pending() but returns a 1 to indicate that we have
1490 * unprocessed data available or 0 otherwise (as opposed to the number of
1491 * bytes available). Unlike SSL_pending() this will take into account
1492 * read_ahead data. A 1 return simply indicates that we have unprocessed
1493 * data. That data may not result in any application data, or we may fail
1494 * to parse the records for some reason.
1495 */
b8c49611 1496 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1497 return 1;
1498
1499 return RECORD_LAYER_read_pending(&s->rlayer);
1500}
1501
0821bcd4 1502X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1503{
1504 X509 *r;
d02b48c6 1505
0f113f3e
MC		 1506 if ((s == NULL) || (s->session == NULL))
1507 r = NULL;
1508 else
1509 r = s->session->peer;
d02b48c6 1510
0f113f3e 1511 if (r == NULL)
26a7d938 1512 return r;
d02b48c6 1513
05f0fb9f 1514 X509_up_ref(r);
0f113f3e 1515
26a7d938 1516 return r;
0f113f3e 1517}
d02b48c6 1518
0821bcd4 1519STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1520{
1521 STACK_OF(X509) *r;
1522
c34b0f99 1523 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1524 r = NULL;
1525 else
c34b0f99 1526 r = s->session->peer_chain;
0f113f3e
MC		 1527
1528 /*
1529 * If we are a client, cert_chain includes the peer's own certificate; if
1530 * we are a server, it does not.
1531 */
1532
26a7d938 1533 return r;
0f113f3e
MC		 1534}
1535
1536/*
1537 * Now in theory, since the calling process own 't' it should be safe to
1538 * modify. We need to be able to read f without being hassled
1539 */
17dd65e6 1540int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1541{
16203f7b 1542 int i;
0f113f3e 1543 /* Do we need to to SSL locking? */
61986d32 1544 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1545 return 0;
69f68237 1546 }
0f113f3e
MC		 1547
1548 /*
87d9cafa 1549 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1550 */
1551 if (t->method != f->method) {
919ba009
VD		 1552 t->method->ssl_free(t);
1553 t->method = f->method;
1554 if (t->method->ssl_new(t) == 0)
1555 return 0;
0f113f3e
MC		 1556 }
1557
2f545ae4 1558 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1559 ssl_cert_free(t->cert);
1560 t->cert = f->cert;
348240c6 1561 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1562 return 0;
69f68237 1563 }
17dd65e6
MC		 1564
1565 return 1;
0f113f3e 1566}
d02b48c6 1567
58964a49 1568/* Fix this so it checks all the valid key/cert options */
0821bcd4 1569int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1570{
a230b26e
EK		 1571 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1572 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1573 return 0;
0f113f3e
MC		 1574 }
1575 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1576 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1577 return 0;
0f113f3e 1578 }
26a7d938
K		 1579 return X509_check_private_key
1580 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1581}
d02b48c6 1582
58964a49 1583/* Fix this function so that it takes an optional type parameter */
0821bcd4 1584int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1585{
1586 if (ssl == NULL) {
1587 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1588 return 0;
0f113f3e 1589 }
0f113f3e
MC		 1590 if (ssl->cert->key->x509 == NULL) {
1591 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1592 return 0;
0f113f3e
MC		 1593 }
1594 if (ssl->cert->key->privatekey == NULL) {
1595 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1596 return 0;
0f113f3e 1597 }
26a7d938
K		 1598 return X509_check_private_key(ssl->cert->key->x509,
1599 ssl->cert->key->privatekey);
0f113f3e 1600}
d02b48c6 1601
07bbc92c
MC		 1602int SSL_waiting_for_async(SSL *s)
1603{
e8aa8b6c 1604 if (s->job)
82676094
MC		 1605 return 1;
1606
07bbc92c
MC		 1607 return 0;
1608}
1609
ff75a257 1610int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1611{
ff75a257
MC		 1612 ASYNC_WAIT_CTX *ctx = s->waitctx;
1613
1614 if (ctx == NULL)
1615 return 0;
1616 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1617}
f4da39d2 1618
ff75a257
MC		 1619int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1620 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1621{
1622 ASYNC_WAIT_CTX *ctx = s->waitctx;
1623
1624 if (ctx == NULL)
1625 return 0;
1626 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1627 numdelfds);
f4da39d2
MC		 1628}
1629
4f43d0e7 1630int SSL_accept(SSL *s)
0f113f3e 1631{
c4c32155 1632 if (s->handshake_func == NULL) {
0f113f3e
MC		 1633 /* Not properly initialized yet */
1634 SSL_set_accept_state(s);
07bbc92c 1635 }
add2f5ca
MC		 1636
1637 return SSL_do_handshake(s);
0f113f3e 1638}
d02b48c6 1639
4f43d0e7 1640int SSL_connect(SSL *s)
0f113f3e 1641{
c4c32155 1642 if (s->handshake_func == NULL) {
0f113f3e
MC		 1643 /* Not properly initialized yet */
1644 SSL_set_connect_state(s);
add2f5ca 1645 }
b31b04d9 1646
add2f5ca 1647 return SSL_do_handshake(s);
0f113f3e 1648}
d02b48c6 1649
0821bcd4 1650long SSL_get_default_timeout(const SSL *s)
0f113f3e 1651{
26a7d938 1652 return s->method->get_timeout();
0f113f3e
MC		 1653}
1654
7fecbf6f 1655static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1656 int (*func) (void *))
1657{
add2f5ca 1658 int ret;
ff75a257
MC		 1659 if (s->waitctx == NULL) {
1660 s->waitctx = ASYNC_WAIT_CTX_new();
1661 if (s->waitctx == NULL)
1662 return -1;
1663 }
e8aa8b6c 1664 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1665 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1666 case ASYNC_ERR:
1667 s->rwstate = SSL_NOTHING;
7fecbf6f 1668 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1669 return -1;
1670 case ASYNC_PAUSE:
1671 s->rwstate = SSL_ASYNC_PAUSED;
1672 return -1;
fc7f190c
MC		 1673 case ASYNC_NO_JOBS:
1674 s->rwstate = SSL_ASYNC_NO_JOBS;
1675 return -1;
add2f5ca
MC		 1676 case ASYNC_FINISH:
1677 s->job = NULL;
1678 return ret;
1679 default:
1680 s->rwstate = SSL_NOTHING;
7fecbf6f 1681 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1682 /* Shouldn't happen */
1683 return -1;
1684 }
1685}
07bbc92c 1686
add2f5ca 1687static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1688{
1689 struct ssl_async_args *args;
1690 SSL *s;
1691 void *buf;
348240c6 1692 size_t num;
07bbc92c
MC		 1693
1694 args = (struct ssl_async_args *)vargs;
1695 s = args->s;
1696 buf = args->buf;
1697 num = args->num;
ec447924
MC		 1698 switch (args->type) {
1699 case READFUNC:
7ee8627f 1700 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1701 case WRITEFUNC:
7ee8627f 1702 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1703 case OTHERFUNC:
1704 return args->f.func_other(s);
1705 }
1706 return -1;
07bbc92c
MC		 1707}
1708
4ee7d3f9 1709int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1710{
c4c32155 1711 if (s->handshake_func == NULL) {
4ee7d3f9 1712 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1713 return -1;
1714 }
1715
1716 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1717 s->rwstate = SSL_NOTHING;
4ee7d3f9 1718 return 0;
0f113f3e 1719 }
07bbc92c 1720
564547e4
MC		 1721 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1722 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1723 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1724 return 0;
1725 }
564547e4
MC		 1726 /*
1727 * If we are a client and haven't received the ServerHello etc then we
1728 * better do that
1729 */
1730 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1731
e8aa8b6c 1732 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1733 struct ssl_async_args args;
eda75751 1734 int ret;
add2f5ca
MC		 1735
1736 args.s = s;
1737 args.buf = buf;
1738 args.num = num;
ec447924
MC		 1739 args.type = READFUNC;
1740 args.f.func_read = s->method->ssl_read;
add2f5ca 1741
eda75751 1742 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1743 *readbytes = s->asyncrw;
eda75751 1744 return ret;
07bbc92c 1745 } else {
54105ddd 1746 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1747 }
0f113f3e
MC		 1748}
1749
4ee7d3f9 1750int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1751{
1752 int ret;
54105ddd 1753 size_t readbytes;
eda75751
MC		 1754
1755 if (num < 0) {
4ee7d3f9 1756 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1757 return -1;
1758 }
1759
4ee7d3f9 1760 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1761
1762 /*
1763 * The cast is safe here because ret should be <= INT_MAX because num is
1764 * <= INT_MAX
1765 */
1766 if (ret > 0)
54105ddd 1767 ret = (int)readbytes;
eda75751
MC		 1768
1769 return ret;
1770}
1771
4ee7d3f9
KR		 1772int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1773{
1774 int ret = ssl_read_internal(s, buf, num, readbytes);
1775
1776 if (ret < 0)
1777 ret = 0;
1778 return ret;
1779}
1780
f533fbd4 1781int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1782{
1783 int ret;
1784
1785 if (!s->server) {
f533fbd4
MC		 1786 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1787 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1788 }
1789
d781d247
MC		 1790 switch (s->early_data_state) {
1791 case SSL_EARLY_DATA_NONE:
1792 if (!SSL_in_before(s)) {
f533fbd4
MC		 1793 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1794 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1795 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1796 }
1797 /* fall through */
1798
1799 case SSL_EARLY_DATA_ACCEPT_RETRY:
1800 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1801 ret = SSL_accept(s);
1802 if (ret <= 0) {
1803 /* NBIO or error */
1804 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1805 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1806 }
1807 /* fall through */
1808
1809 case SSL_EARLY_DATA_READ_RETRY:
1810 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1811 s->early_data_state = SSL_EARLY_DATA_READING;
1812 ret = SSL_read_ex(s, buf, num, readbytes);
1813 /*
ef6c191b
MC		 1814 * State machine will update early_data_state to
1815 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1816 * message
d781d247
MC		 1817 */
1818 if (ret > 0 || (ret <= 0 && s->early_data_state
1819 != SSL_EARLY_DATA_FINISHED_READING)) {
1820 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1821 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1822 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1823 }
1824 } else {
1825 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1826 }
1827 *readbytes = 0;
f533fbd4 1828 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1829
1830 default:
f533fbd4
MC		 1831 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1832 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1833 }
1834}
1835
f5b519c4 1836int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1837{
1838 return s->ext.early_data;
1839}
1840
4ee7d3f9 1841static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1842{
c4c32155 1843 if (s->handshake_func == NULL) {
4ee7d3f9 1844 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1845 return -1;
1846 }
1847
1848 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1849 return 0;
0f113f3e 1850 }
e8aa8b6c 1851 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1852 struct ssl_async_args args;
eda75751 1853 int ret;
0f113f3e 1854
add2f5ca
MC		 1855 args.s = s;
1856 args.buf = buf;
1857 args.num = num;
ec447924
MC		 1858 args.type = READFUNC;
1859 args.f.func_read = s->method->ssl_peek;
07bbc92c 1860
eda75751 1861 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1862 *readbytes = s->asyncrw;
eda75751 1863 return ret;
add2f5ca 1864 } else {
54105ddd 1865 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1866 }
07bbc92c
MC		 1867}
1868
4ee7d3f9 1869int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1870{
1871 int ret;
4ee7d3f9 1872 size_t readbytes;
7ee8627f
MC		 1873
1874 if (num < 0) {
4ee7d3f9 1875 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1876 return -1;
1877 }
1878
4ee7d3f9 1879 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1880
1881 /*
1882 * The cast is safe here because ret should be <= INT_MAX because num is
1883 * <= INT_MAX
1884 */
1885 if (ret > 0)
4ee7d3f9 1886 ret = (int)readbytes;
7ee8627f
MC		 1887
1888 return ret;
1889}
1890
4ee7d3f9
KR		 1891
1892int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1893{
1894 int ret = ssl_peek_internal(s, buf, num, readbytes);
1895
1896 if (ret < 0)
1897 ret = 0;
1898 return ret;
1899}
1900
1901int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1902{
c4c32155 1903 if (s->handshake_func == NULL) {
4ee7d3f9 1904 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1905 return -1;
1906 }
1907
1908 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1909 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1910 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1911 return -1;
0f113f3e 1912 }
07bbc92c 1913
ef6c191b 1914 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1915 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1916 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1917 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1918 return 0;
0a5ece5b 1919 }
564547e4
MC		 1920 /* If we are a client and haven't sent the Finished we better do that */
1921 ossl_statem_check_finish_init(s, 1);
49e7fe12 1922
e8aa8b6c 1923 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1924 int ret;
add2f5ca
MC		 1925 struct ssl_async_args args;
1926
1927 args.s = s;
1928 args.buf = (void *)buf;
1929 args.num = num;
ec447924
MC		 1930 args.type = WRITEFUNC;
1931 args.f.func_write = s->method->ssl_write;
add2f5ca 1932
7ee8627f
MC		 1933 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1934 *written = s->asyncrw;
1935 return ret;
07bbc92c 1936 } else {
7ee8627f 1937 return s->method->ssl_write(s, buf, num, written);
07bbc92c 1938 }
0f113f3e 1939}
d02b48c6 1940
4ee7d3f9
KR		 1941int SSL_write(SSL *s, const void *buf, int num)
1942{
1943 int ret;
1944 size_t written;
1945
1946 if (num < 0) {
1947 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1948 return -1;
1949 }
1950
1951 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1952
1953 /*
1954 * The cast is safe here because ret should be <= INT_MAX because num is
1955 * <= INT_MAX
1956 */
1957 if (ret > 0)
1958 ret = (int)written;
1959
1960 return ret;
1961}
1962
1963int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1964{
1965 int ret = ssl_write_internal(s, buf, num, written);
1966
1967 if (ret < 0)
1968 ret = 0;
1969 return ret;
1970}
1971
0665b4ed 1972int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 1973{
a0cb628b 1974 int ret, early_data_state;
2a8db717 1975 size_t writtmp;
f7414b08 1976 uint32_t partialwrite;
49e7fe12 1977
49e7fe12
MC		 1978 switch (s->early_data_state) {
1979 case SSL_EARLY_DATA_NONE:
09f28874
MC		 1980 if (s->server
1981 || !SSL_in_before(s)
add8d0e9
MC		 1982 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1983 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 1984 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1985 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1986 return 0;
1987 }
1988 /* fall through */
1989
1990 case SSL_EARLY_DATA_CONNECT_RETRY:
1991 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1992 ret = SSL_connect(s);
1993 if (ret <= 0) {
1994 /* NBIO or error */
1995 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1996 return 0;
1997 }
1998 /* fall through */
1999
2000 case SSL_EARLY_DATA_WRITE_RETRY:
2001 s->early_data_state = SSL_EARLY_DATA_WRITING;
f7414b08
MC		 2002 /*
2003 * We disable partial write for early data because we don't keep track
2004 * of how many bytes we've written between the SSL_write_ex() call and
2005 * the flush if the flush needs to be retried)
2006 */
2007 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2008 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2a8db717 2009 ret = SSL_write_ex(s, buf, num, &writtmp);
f7414b08 2010 s->mode |= partialwrite;
2a8db717
MC		 2011 if (!ret) {
2012 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2013 return ret;
2014 }
2015 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2016 /* fall through */
2017
2018 case SSL_EARLY_DATA_WRITE_FLUSH:
2019 /* The buffering BIO is still in place so we need to flush it */
2020 if (statem_flush(s) != 1)
2021 return 0;
2a8db717 2022 *written = num;
49e7fe12 2023 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2a8db717 2024 return 1;
49e7fe12 2025
116d0da5 2026 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 2027 case SSL_EARLY_DATA_READ_RETRY:
2028 early_data_state = s->early_data_state;
09f28874
MC		 2029 /* We are a server writing to an unauthenticated client */
2030 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2031 ret = SSL_write_ex(s, buf, num, written);
5fe37157
MC		 2032 /* The buffering BIO is still in place */
2033 if (ret)
2034 (void)BIO_flush(s->wbio);
bbea9f2c 2035 s->early_data_state = early_data_state;
09f28874
MC		 2036 return ret;
2037
49e7fe12 2038 default:
09f28874 2039 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 2040 return 0;
2041 }
2042}
2043
4f43d0e7 2044int SSL_shutdown(SSL *s)
0f113f3e
MC		 2045{
2046 /*
2047 * Note that this function behaves differently from what one might
2048 * expect. Return values are 0 for no success (yet), 1 for success; but
2049 * calling it once is usually not enough, even if blocking I/O is used
2050 * (see ssl3_shutdown).
2051 */
2052
c4c32155 2053 if (s->handshake_func == NULL) {
0f113f3e
MC		 2054 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2055 return -1;
2056 }
2057
64f9f406 2058 if (!SSL_in_init(s)) {
e8aa8b6c 2059 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 2060 struct ssl_async_args args;
ec447924 2061
64f9f406
MC		 2062 args.s = s;
2063 args.type = OTHERFUNC;
2064 args.f.func_other = s->method->ssl_shutdown;
ec447924 2065
64f9f406
MC		 2066 return ssl_start_async_job(s, &args, ssl_io_intern);
2067 } else {
2068 return s->method->ssl_shutdown(s);
2069 }
ec447924 2070 } else {
64f9f406
MC		 2071 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2072 return -1;
ec447924 2073 }
0f113f3e 2074}
d02b48c6 2075
4fbfe86a 2076int SSL_key_update(SSL *s, int updatetype)
44c04a2e 2077{
f14afcaa 2078 /*
a9998e2f 2079 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 2080 * negotiated, and that it is appropriate to call SSL_key_update() instead
2081 * of SSL_renegotiate().
2082 */
44c04a2e
MC		 2083 if (!SSL_IS_TLS13(s)) {
2084 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2085 return 0;
2086 }
2087
2088 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2089 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2090 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2091 return 0;
2092 }
2093
2094 if (!SSL_is_init_finished(s)) {
2095 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2096 return 0;
2097 }
2098
2099 ossl_statem_set_in_init(s, 1);
44c04a2e 2100 s->key_update = updatetype;
44c04a2e
MC		 2101 return 1;
2102}
2103
4fbfe86a 2104int SSL_get_key_update_type(SSL *s)
53d1d07d
MC		 2105{
2106 return s->key_update;
2107}
2108
4f43d0e7 2109int SSL_renegotiate(SSL *s)
0f113f3e 2110{
44c04a2e
MC		 2111 if (SSL_IS_TLS13(s)) {
2112 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2113 return 0;
44c04a2e 2114 }
cda6b998 2115
db0f35dd
TS		 2116 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2117 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2118 return 0;
2119 }
44959ee4 2120
db0f35dd 2121 s->renegotiate = 1;
0f113f3e 2122 s->new_session = 1;
44959ee4 2123
26a7d938 2124 return s->method->ssl_renegotiate(s);
0f113f3e 2125}
d02b48c6 2126
44959ee4 2127int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2128{
db0f35dd
TS		 2129 if (SSL_IS_TLS13(s)) {
2130 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2131 return 0;
db0f35dd 2132 }
cda6b998 2133
db0f35dd
TS		 2134 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2135 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2136 return 0;
2137 }
c519e89f 2138
db0f35dd 2139 s->renegotiate = 1;
0f113f3e 2140 s->new_session = 0;
c519e89f 2141
26a7d938 2142 return s->method->ssl_renegotiate(s);
0f113f3e 2143}
44959ee4 2144
6b0e9fac 2145int SSL_renegotiate_pending(SSL *s)
0f113f3e
MC		 2146{
2147 /*
2148 * becomes true when negotiation is requested; false again once a
2149 * handshake has finished
2150 */
2151 return (s->renegotiate != 0);
2152}
2153
2154long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2155{
2156 long l;
2157
2158 switch (cmd) {
2159 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2160 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2161 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2162 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2163 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2164 return l;
0f113f3e
MC		 2165
2166 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2167 s->msg_callback_arg = parg;
2168 return 1;
2169
0f113f3e
MC		 2170 case SSL_CTRL_MODE:
2171 return (s->mode |= larg);
2172 case SSL_CTRL_CLEAR_MODE:
2173 return (s->mode &= ~larg);
2174 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2175 return (long)s->max_cert_list;
0f113f3e 2176 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2177 if (larg < 0)
2178 return 0;
2179 l = (long)s->max_cert_list;
2180 s->max_cert_list = (size_t)larg;
2181 return l;
0f113f3e
MC		 2182 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2183 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2184 return 0;
2185 s->max_send_fragment = larg;
d102d9df
MC		 2186 if (s->max_send_fragment < s->split_send_fragment)
2187 s->split_send_fragment = s->max_send_fragment;
2188 return 1;
2189 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2190 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2191 return 0;
2192 s->split_send_fragment = larg;
0f113f3e 2193 return 1;
d102d9df
MC		 2194 case SSL_CTRL_SET_MAX_PIPELINES:
2195 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2196 return 0;
2197 s->max_pipelines = larg;
94777c9c
MC		 2198 if (larg > 1)
2199 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2200 return 1;
0f113f3e
MC		 2201 case SSL_CTRL_GET_RI_SUPPORT:
2202 if (s->s3)
2203 return s->s3->send_connection_binding;
2204 else
2205 return 0;
2206 case SSL_CTRL_CERT_FLAGS:
2207 return (s->cert->cert_flags |= larg);
2208 case SSL_CTRL_CLEAR_CERT_FLAGS:
2209 return (s->cert->cert_flags &= ~larg);
2210
2211 case SSL_CTRL_GET_RAW_CIPHERLIST:
2212 if (parg) {
76106e60 2213 if (s->s3->tmp.ciphers_raw == NULL)
0f113f3e 2214 return 0;
76106e60
DSH		 2215 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2216 return (int)s->s3->tmp.ciphers_rawlen;
e9fa092e
EK		 2217 } else {
2218 return TLS_CIPHER_LEN;
2219 }
c5364614 2220 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2221 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2222 return -1;
dccd20d1 2223 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2224 return 1;
2225 else
2226 return 0;
7946ab33 2227 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2228 return ssl_check_allowed_versions(larg, s->max_proto_version)
2229 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2230 &s->min_proto_version);
3edabd3c
CH		 2231 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2232 return s->min_proto_version;
7946ab33 2233 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2234 return ssl_check_allowed_versions(s->min_proto_version, larg)
2235 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2236 &s->max_proto_version);
3edabd3c
CH		 2237 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2238 return s->max_proto_version;
0f113f3e 2239 default:
26a7d938 2240 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2241 }
2242}
2243
2244long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2245{
2246 switch (cmd) {
2247 case SSL_CTRL_SET_MSG_CALLBACK:
2248 s->msg_callback = (void (*)
2249 (int write_p, int version, int content_type,
2250 const void *buf, size_t len, SSL *ssl,
2251 void *arg))(fp);
2252 return 1;
2253
2254 default:
26a7d938 2255 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2256 }
2257}
d3442bc7 2258
3c1d6bbc 2259LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2260{
2261 return ctx->sessions;
2262}
2263
2264long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2265{
2266 long l;
2267 /* For some cases with ctx == NULL perform syntax checks */
2268 if (ctx == NULL) {
2269 switch (cmd) {
14536c8c 2270#ifndef OPENSSL_NO_EC
de4d764e
MC		 2271 case SSL_CTRL_SET_GROUPS_LIST:
2272 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2273#endif
2274 case SSL_CTRL_SET_SIGALGS_LIST:
2275 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2276 return tls1_set_sigalgs_list(NULL, parg, 0);
2277 default:
2278 return 0;
2279 }
2280 }
2281
2282 switch (cmd) {
2283 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2284 return ctx->read_ahead;
0f113f3e
MC		 2285 case SSL_CTRL_SET_READ_AHEAD:
2286 l = ctx->read_ahead;
2287 ctx->read_ahead = larg;
26a7d938 2288 return l;
0f113f3e
MC		 2289
2290 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2291 ctx->msg_callback_arg = parg;
2292 return 1;
2293
2294 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2295 return (long)ctx->max_cert_list;
0f113f3e 2296 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2297 if (larg < 0)
2298 return 0;
2299 l = (long)ctx->max_cert_list;
2300 ctx->max_cert_list = (size_t)larg;
2301 return l;
0f113f3e
MC		 2302
2303 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2304 if (larg < 0)
2305 return 0;
2306 l = (long)ctx->session_cache_size;
2307 ctx->session_cache_size = (size_t)larg;
2308 return l;
0f113f3e 2309 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2310 return (long)ctx->session_cache_size;
0f113f3e
MC		 2311 case SSL_CTRL_SET_SESS_CACHE_MODE:
2312 l = ctx->session_cache_mode;
2313 ctx->session_cache_mode = larg;
26a7d938 2314 return l;
0f113f3e 2315 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2316 return ctx->session_cache_mode;
0f113f3e
MC		 2317
2318 case SSL_CTRL_SESS_NUMBER:
26a7d938 2319 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2320 case SSL_CTRL_SESS_CONNECT:
9ef9088c 2321 return tsan_load(&ctx->stats.sess_connect);
0f113f3e 2322 case SSL_CTRL_SESS_CONNECT_GOOD:
9ef9088c 2323 return tsan_load(&ctx->stats.sess_connect_good);
0f113f3e 2324 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
9ef9088c 2325 return tsan_load(&ctx->stats.sess_connect_renegotiate);
0f113f3e 2326 case SSL_CTRL_SESS_ACCEPT:
9ef9088c 2327 return tsan_load(&ctx->stats.sess_accept);
0f113f3e 2328 case SSL_CTRL_SESS_ACCEPT_GOOD:
9ef9088c 2329 return tsan_load(&ctx->stats.sess_accept_good);
0f113f3e 2330 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
9ef9088c 2331 return tsan_load(&ctx->stats.sess_accept_renegotiate);
0f113f3e 2332 case SSL_CTRL_SESS_HIT:
9ef9088c 2333 return tsan_load(&ctx->stats.sess_hit);
0f113f3e 2334 case SSL_CTRL_SESS_CB_HIT:
9ef9088c 2335 return tsan_load(&ctx->stats.sess_cb_hit);
0f113f3e 2336 case SSL_CTRL_SESS_MISSES:
9ef9088c 2337 return tsan_load(&ctx->stats.sess_miss);
0f113f3e 2338 case SSL_CTRL_SESS_TIMEOUTS:
9ef9088c 2339 return tsan_load(&ctx->stats.sess_timeout);
0f113f3e 2340 case SSL_CTRL_SESS_CACHE_FULL:
9ef9088c 2341 return tsan_load(&ctx->stats.sess_cache_full);
0f113f3e
MC		 2342 case SSL_CTRL_MODE:
2343 return (ctx->mode |= larg);
2344 case SSL_CTRL_CLEAR_MODE:
2345 return (ctx->mode &= ~larg);
2346 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2347 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2348 return 0;
2349 ctx->max_send_fragment = larg;
d102d9df 2350 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2351 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2352 return 1;
d102d9df 2353 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2354 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2355 return 0;
2356 ctx->split_send_fragment = larg;
2357 return 1;
2358 case SSL_CTRL_SET_MAX_PIPELINES:
2359 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2360 return 0;
2361 ctx->max_pipelines = larg;
07077415 2362 return 1;
0f113f3e
MC		 2363 case SSL_CTRL_CERT_FLAGS:
2364 return (ctx->cert->cert_flags |= larg);
2365 case SSL_CTRL_CLEAR_CERT_FLAGS:
2366 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2367 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2368 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2369 && ssl_set_version_bound(ctx->method->version, (int)larg,
2370 &ctx->min_proto_version);
3edabd3c
CH		 2371 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2372 return ctx->min_proto_version;
7946ab33 2373 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2374 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2375 && ssl_set_version_bound(ctx->method->version, (int)larg,
2376 &ctx->max_proto_version);
3edabd3c
CH		 2377 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2378 return ctx->max_proto_version;
0f113f3e 2379 default:
26a7d938 2380 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2381 }
2382}
2383
2384long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2385{
2386 switch (cmd) {
2387 case SSL_CTRL_SET_MSG_CALLBACK:
2388 ctx->msg_callback = (void (*)
2389 (int write_p, int version, int content_type,
2390 const void *buf, size_t len, SSL *ssl,
2391 void *arg))(fp);
2392 return 1;
2393
2394 default:
26a7d938 2395 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2396 }
2397}
d3442bc7 2398
ccd86b68 2399int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2400{
90d9e49a
DSH		 2401 if (a->id > b->id)
2402 return 1;
2403 if (a->id < b->id)
2404 return -1;
2405 return 0;
0f113f3e
MC		 2406}
2407
2408int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2409 const SSL_CIPHER *const *bp)
2410{
90d9e49a
DSH		 2411 if ((*ap)->id > (*bp)->id)
2412 return 1;
2413 if ((*ap)->id < (*bp)->id)
2414 return -1;
2415 return 0;
0f113f3e 2416}
d02b48c6 2417
4f43d0e7 2418/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2419 * preference */
0821bcd4 2420STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2421{
2422 if (s != NULL) {
2423 if (s->cipher_list != NULL) {
26a7d938 2424 return s->cipher_list;
0f113f3e 2425 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2426 return s->ctx->cipher_list;
0f113f3e
MC		 2427 }
2428 }
26a7d938 2429 return NULL;
0f113f3e
MC		 2430}
2431
831eef2c
NM		 2432STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2433{
2434 if ((s == NULL) || (s->session == NULL) || !s->server)
2435 return NULL;
2436 return s->session->ciphers;
2437}
2438
8b8e5bed 2439STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2440{
2441 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2442 int i;
1d0c08b4 2443
0f113f3e
MC		 2444 ciphers = SSL_get_ciphers(s);
2445 if (!ciphers)
2446 return NULL;
1d0c08b4
MC		 2447 if (!ssl_set_client_disabled(s))
2448 return NULL;
0f113f3e
MC		 2449 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2450 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2451 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2452 if (!sk)
2453 sk = sk_SSL_CIPHER_new_null();
2454 if (!sk)
2455 return NULL;
2456 if (!sk_SSL_CIPHER_push(sk, c)) {
2457 sk_SSL_CIPHER_free(sk);
2458 return NULL;
2459 }
2460 }
2461 }
2462 return sk;
2463}
8b8e5bed 2464
4f43d0e7 2465/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2466 * algorithm id */
f73e07cf 2467STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2468{
2469 if (s != NULL) {
2470 if (s->cipher_list_by_id != NULL) {
26a7d938 2471 return s->cipher_list_by_id;
0f113f3e 2472 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2473 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2474 }
2475 }
26a7d938 2476 return NULL;
0f113f3e 2477}
d02b48c6 2478
4f43d0e7 2479/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2480const char *SSL_get_cipher_list(const SSL *s, int n)
2481{
4a640fb6 2482 const SSL_CIPHER *c;
0f113f3e
MC		 2483 STACK_OF(SSL_CIPHER) *sk;
2484
2485 if (s == NULL)
26a7d938 2486 return NULL;
0f113f3e
MC		 2487 sk = SSL_get_ciphers(s);
2488 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2489 return NULL;
0f113f3e
MC		 2490 c = sk_SSL_CIPHER_value(sk, n);
2491 if (c == NULL)
26a7d938
K		 2492 return NULL;
2493 return c->name;
0f113f3e 2494}
d02b48c6 2495
9d5ac953
KY		 2496/** return a STACK of the ciphers available for the SSL_CTX and in order of
2497 * preference */
2498STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2499{
2500 if (ctx != NULL)
2501 return ctx->cipher_list;
2502 return NULL;
2503}
2504
25f923dd 2505/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2506int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2507{
2508 STACK_OF(SSL_CIPHER) *sk;
2509
f865b081
MC		 2510 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2511 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2512 ctx->cert);
0f113f3e
MC		 2513 /*
2514 * ssl_create_cipher_list may return an empty stack if it was unable to
2515 * find a cipher matching the given rule string (for example if the rule
2516 * string specifies a cipher which has been disabled). This is not an
2517 * error as far as ssl_create_cipher_list is concerned, and hence
2518 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2519 */
2520 if (sk == NULL)
2521 return 0;
2522 else if (sk_SSL_CIPHER_num(sk) == 0) {
2523 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2524 return 0;
2525 }
2526 return 1;
2527}
d02b48c6 2528
4f43d0e7 2529/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2530int SSL_set_cipher_list(SSL *s, const char *str)
2531{
2532 STACK_OF(SSL_CIPHER) *sk;
2533
f865b081
MC		 2534 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2535 &s->cipher_list, &s->cipher_list_by_id, str,
2536 s->cert);
0f113f3e
MC		 2537 /* see comment in SSL_CTX_set_cipher_list */
2538 if (sk == NULL)
2539 return 0;
2540 else if (sk_SSL_CIPHER_num(sk) == 0) {
2541 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2542 return 0;
2543 }
2544 return 1;
2545}
d02b48c6 2546
a216df59 2547char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
0f113f3e
MC		 2548{
2549 char *p;
a216df59 2550 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
4a640fb6 2551 const SSL_CIPHER *c;
0f113f3e
MC		 2552 int i;
2553
a216df59
MC		 2554 if (!s->server
2555 || s->session == NULL
2556 || s->session->ciphers == NULL
2557 || size < 2)
26a7d938 2558 return NULL;
0f113f3e
MC		 2559
2560 p = buf;
a216df59
MC		 2561 clntsk = s->session->ciphers;
2562 srvrsk = SSL_get_ciphers(s);
2563 if (clntsk == NULL || srvrsk == NULL)
2564 return NULL;
0f113f3e 2565
a216df59 2566 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
0f113f3e
MC		 2567 return NULL;
2568
a216df59 2569 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
0f113f3e
MC		 2570 int n;
2571
a216df59
MC		 2572 c = sk_SSL_CIPHER_value(clntsk, i);
2573 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2574 continue;
2575
0f113f3e 2576 n = strlen(c->name);
a216df59 2577 if (n + 1 > size) {
0f113f3e
MC		 2578 if (p != buf)
2579 --p;
2580 *p = '\0';
2581 return buf;
2582 }
4cacc9d5 2583 strcpy(p, c->name);
0f113f3e
MC		 2584 p += n;
2585 *(p++) = ':';
a216df59 2586 size -= n + 1;
0f113f3e
MC		 2587 }
2588 p[-1] = '\0';
26a7d938 2589 return buf;
0f113f3e
MC		 2590}
2591
52b8dad8 2592/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2593 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2594 */
2595
f1fd4544 2596const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2597{
2598 if (type != TLSEXT_NAMETYPE_host_name)
2599 return NULL;
a13c20f6 2600
1c4aa31d
BK		 2601 /*
2602 * TODO(OpenSSL1.2) clean up this compat mess. This API is
2603 * currently a mix of "what did I configure" and "what did the
2604 * peer send" and "what was actually negotiated"; we should have
2605 * a clear distinction amongst those three.
2606 */
a75be9fd
BK		 2607 if (SSL_in_init(s)) {
2608 if (s->hit)
2609 return s->session->ext.hostname;
1c4aa31d 2610 return s->ext.hostname;
a75be9fd 2611 }
1c4aa31d 2612 return (s->session != NULL && s->ext.hostname == NULL) ?
aff8c126 2613 s->session->ext.hostname : s->ext.hostname;
0f113f3e 2614}
ed3883d2 2615
f1fd4544 2616int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2617{
2618 if (s->session
aff8c126
RS		 2619 && (!s->ext.hostname ? s->session->
2620 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2621 return TLSEXT_NAMETYPE_host_name;
2622 return -1;
2623}
ee2ffc27 2624
0f113f3e
MC		 2625/*
2626 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2627 * expected that this function is called from the callback set by
0f113f3e
MC		 2628 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2629 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2630 * not included in the length. A byte string of length 0 is invalid. No byte
2631 * string may be truncated. The current, but experimental algorithm for
2632 * selecting the protocol is: 1) If the server doesn't support NPN then this
2633 * is indicated to the callback. In this case, the client application has to
2634 * abort the connection or have a default application level protocol. 2) If
2635 * the server supports NPN, but advertises an empty list then the client
f430ba31 2636 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2637 * fallback case was enacted. 3) Otherwise, the client finds the first
2638 * protocol in the server's list that it supports and selects this protocol.
2639 * This is because it's assumed that the server has better information about
2640 * which protocol a client should use. 4) If the client doesn't support any
2641 * of the server's advertised protocols, then this is treated the same as
2642 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2643 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2644 */
0f113f3e
MC		 2645int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2646 const unsigned char *server,
2647 unsigned int server_len,
a230b26e 2648 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2649{
2650 unsigned int i, j;
2651 const unsigned char *result;
2652 int status = OPENSSL_NPN_UNSUPPORTED;
2653
2654 /*
2655 * For each protocol in server preference order, see if we support it.
2656 */
2657 for (i = 0; i < server_len;) {
2658 for (j = 0; j < client_len;) {
2659 if (server[i] == client[j] &&
2660 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2661 /* We found a match */
2662 result = &server[i];
2663 status = OPENSSL_NPN_NEGOTIATED;
2664 goto found;
2665 }
2666 j += client[j];
2667 j++;
2668 }
2669 i += server[i];
2670 i++;
2671 }
2672
2673 /* There's no overlap between our protocols and the server's list. */
2674 result = client;
2675 status = OPENSSL_NPN_NO_OVERLAP;
2676
2677 found:
2678 *out = (unsigned char *)result + 1;
2679 *outlen = result[0];
2680 return status;
2681}
ee2ffc27 2682
e481f9b9 2683#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2684/*
2685 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2686 * client's requested protocol for this connection and returns 0. If the
2687 * client didn't request any protocol, then *data is set to NULL. Note that
2688 * the client can request any protocol it chooses. The value returned from
2689 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2690 * provided by the callback.
2691 */
0f113f3e
MC		 2692void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2693 unsigned *len)
2694{
aff8c126 2695 *data = s->ext.npn;
0f113f3e
MC		 2696 if (!*data) {
2697 *len = 0;
2698 } else {
aff8c126 2699 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2700 }
2701}
2702
2703/*
aff8c126 2704 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2705 * a TLS server needs a list of supported protocols for Next Protocol
2706 * Negotiation. The returned list must be in wire format. The list is
2707 * returned by setting |out| to point to it and |outlen| to its length. This
2708 * memory will not be modified, but one should assume that the SSL* keeps a
2709 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2710 * wishes to advertise. Otherwise, no such extension will be included in the
2711 * ServerHello.
2712 */
aff8c126 2713void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2714 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2715 void *arg)
0f113f3e 2716{
aff8c126
RS		 2717 ctx->ext.npn_advertised_cb = cb;
2718 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2719}
2720
2721/*
2722 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2723 * client needs to select a protocol from the server's provided list. |out|
2724 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2725 * The length of the protocol name must be written into |outlen|. The
2726 * server's advertised protocols are provided in |in| and |inlen|. The
2727 * callback can assume that |in| is syntactically valid. The client must
2728 * select a protocol. It is fatal to the connection if this callback returns
2729 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2730 */
aff8c126 2731void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2732 SSL_CTX_npn_select_cb_func cb,
aff8c126 2733 void *arg)
0f113f3e 2734{
aff8c126
RS		 2735 ctx->ext.npn_select_cb = cb;
2736 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2737}
e481f9b9 2738#endif
a398f821 2739
0f113f3e
MC		 2740/*
2741 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2742 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2743 * length-prefixed strings). Returns 0 on success.
2744 */
2745int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2746 unsigned int protos_len)
0f113f3e 2747{
aff8c126
RS		 2748 OPENSSL_free(ctx->ext.alpn);
2749 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2750 if (ctx->ext.alpn == NULL) {
72e9be3d 2751 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2752 return 1;
72e9be3d 2753 }
aff8c126 2754 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2755
2756 return 0;
2757}
2758
2759/*
2760 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2761 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2762 * length-prefixed strings). Returns 0 on success.
2763 */
2764int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2765 unsigned int protos_len)
0f113f3e 2766{
aff8c126
RS		 2767 OPENSSL_free(ssl->ext.alpn);
2768 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2769 if (ssl->ext.alpn == NULL) {
72e9be3d 2770 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2771 return 1;
72e9be3d 2772 }
aff8c126 2773 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2774
2775 return 0;
2776}
2777
2778/*
2779 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2780 * called during ClientHello processing in order to select an ALPN protocol
2781 * from the client's list of offered protocols.
2782 */
2783void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2784 SSL_CTX_alpn_select_cb_func cb,
2785 void *arg)
0f113f3e 2786{
aff8c126
RS		 2787 ctx->ext.alpn_select_cb = cb;
2788 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2789}
2790
2791/*
69687aa8
F		 2792 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2793 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2794 * (not including the leading length-prefix byte). If the server didn't
2795 * respond with a negotiated protocol then |*len| will be zero.
2796 */
6f017a8f 2797void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2798 unsigned int *len)
0f113f3e
MC		 2799{
2800 *data = NULL;
2801 if (ssl->s3)
2802 *data = ssl->s3->alpn_selected;
2803 if (*data == NULL)
2804 *len = 0;
2805 else
348240c6 2806 *len = (unsigned int)ssl->s3->alpn_selected_len;
0f113f3e
MC		 2807}
2808
74b4b494 2809int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2810 const char *label, size_t llen,
23cec1f4 2811 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2812 int use_context)
2813{
c8a18468 2814 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2815 return -1;
e0af0405 2816
0f113f3e 2817 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2818 llen, context,
2819 contextlen, use_context);
0f113f3e 2820}
e0af0405 2821
b38ede80
TT		 2822int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2823 const char *label, size_t llen,
2824 const unsigned char *context,
2825 size_t contextlen)
2826{
2827 if (s->version != TLS1_3_VERSION)
2828 return 0;
2829
2830 return tls13_export_keying_material_early(s, out, olen, label, llen,
2831 context, contextlen);
2832}
2833
3c1d6bbc 2834static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2835{
bd5d27c1 2836 const unsigned char *session_id = a->session_id;
0f113f3e 2837 unsigned long l;
bd5d27c1
DB		 2838 unsigned char tmp_storage[4];
2839
2840 if (a->session_id_length < sizeof(tmp_storage)) {
2841 memset(tmp_storage, 0, sizeof(tmp_storage));
2842 memcpy(tmp_storage, a->session_id, a->session_id_length);
2843 session_id = tmp_storage;
2844 }
0f113f3e
MC		 2845
2846 l = (unsigned long)
bd5d27c1
DB		 2847 ((unsigned long)session_id[0]) |
2848 ((unsigned long)session_id[1] << 8L) |
2849 ((unsigned long)session_id[2] << 16L) |
2850 ((unsigned long)session_id[3] << 24L);
26a7d938 2851 return l;
0f113f3e
MC		 2852}
2853
2854/*
2855 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 2856 * coarser function than this one) is changed, ensure
0f113f3e
MC		 2857 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2858 * being able to construct an SSL_SESSION that will collide with any existing
2859 * session with a matching session ID.
2860 */
2861static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2862{
2863 if (a->ssl_version != b->ssl_version)
208fb891 2864 return 1;
0f113f3e 2865 if (a->session_id_length != b->session_id_length)
208fb891 2866 return 1;
26a7d938 2867 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 2868}
2869
2870/*
2871 * These wrapper functions should remain rather than redeclaring
d0fa136c 2872 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 2873 * variable. The reason is that the functions aren't static, they're exposed
2874 * via ssl.h.
2875 */
97b17195 2876
4ebb342f 2877SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 2878{
2879 SSL_CTX *ret = NULL;
2880
2881 if (meth == NULL) {
2882 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 2883 return NULL;
0f113f3e
MC		 2884 }
2885
0fc32b07
MC		 2886 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2887 return NULL;
7fa792d1 2888
0f113f3e
MC		 2889 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2890 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2891 goto err;
2892 }
b51bce94 2893 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 2894 if (ret == NULL)
2895 goto err;
2896
0f113f3e 2897 ret->method = meth;
7946ab33
KR		 2898 ret->min_proto_version = 0;
2899 ret->max_proto_version = 0;
693cf80c 2900 ret->mode = SSL_MODE_AUTO_RETRY;
0f113f3e
MC		 2901 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2902 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 2903 /* We take the system default. */
0f113f3e 2904 ret->session_timeout = meth->get_timeout();
0f113f3e 2905 ret->references = 1;
16203f7b
AG		 2906 ret->lock = CRYPTO_THREAD_lock_new();
2907 if (ret->lock == NULL) {
2908 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2909 OPENSSL_free(ret);
2910 return NULL;
2911 }
0f113f3e 2912 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 2913 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 2914 if ((ret->cert = ssl_cert_new()) == NULL)
2915 goto err;
2916
62d0577e 2917 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 2918 if (ret->sessions == NULL)
2919 goto err;
2920 ret->cert_store = X509_STORE_new();
2921 if (ret->cert_store == NULL)
2922 goto err;
ed29e82a
RP		 2923#ifndef OPENSSL_NO_CT
2924 ret->ctlog_store = CTLOG_STORE_new();
2925 if (ret->ctlog_store == NULL)
2926 goto err;
2927#endif
f865b081 2928
fa25763b 2929 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
f865b081
MC		 2930 goto err;
2931
61986d32 2932 if (!ssl_create_cipher_list(ret->method,
f865b081 2933 ret->tls13_ciphersuites,
a230b26e
EK		 2934 &ret->cipher_list, &ret->cipher_list_by_id,
2935 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2936 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 2937 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2938 goto err2;
2939 }
2940
2941 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 2942 if (ret->param == NULL)
0f113f3e
MC		 2943 goto err;
2944
2945 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2946 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2947 goto err2;
2948 }
2949 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2950 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2951 goto err2;
2952 }
2953
fa7c2637 2954 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 2955 goto err;
2956
25a807bc
F		 2957 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2958 goto err;
0f113f3e 2959
4bfb96f2
TS		 2960 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
2961 goto err;
2962
0f113f3e
MC		 2963 /* No compression for DTLS */
2964 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2965 ret->comp_methods = SSL_COMP_get_compression_methods();
2966
2967 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 2968 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 2969
4e2e1ec9 2970 /* Setup RFC5077 ticket keys */
aff8c126
RS		 2971 if ((RAND_bytes(ret->ext.tick_key_name,
2972 sizeof(ret->ext.tick_key_name)) <= 0)
4cffafe9 2973 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
4bfb96f2 2974 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
4cffafe9 2975 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
4bfb96f2 2976 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
0f113f3e 2977 ret->options |= SSL_OP_NO_TICKET;
6434abbf 2978
4cffafe9 2979 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
43054d3d
MC		 2980 sizeof(ret->ext.cookie_hmac_key)) <= 0)
2981 goto err;
2982
edc032b5 2983#ifndef OPENSSL_NO_SRP
61986d32 2984 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 2985 goto err;
edc032b5 2986#endif
4db9677b 2987#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 2988# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2989# define eng_strx(x) #x
2990# define eng_str(x) eng_strx(x)
2991 /* Use specific client engine automatically... ignore errors */
2992 {
2993 ENGINE *eng;
2994 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2995 if (!eng) {
2996 ERR_clear_error();
2997 ENGINE_load_builtin_engines();
2998 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2999 }
3000 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3001 ERR_clear_error();
3002 }
3003# endif
3004#endif
3005 /*
3006 * Default is to connect to non-RI servers. When RI is more widely
3007 * deployed might change this.
3008 */
3009 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 3010 /*
3011 * Disable compression by default to prevent CRIME. Applications can
3012 * re-enable compression by configuring
3013 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
a5816a5a
MC		 3014 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3015 * middlebox compatibility by default. This may be disabled by default in
3016 * a later OpenSSL version.
dc5744cb 3017 */
a5816a5a 3018 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
0f113f3e 3019
aff8c126 3020 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 3021
bfa9a9af 3022 /*
c39e4048
BK		 3023 * We cannot usefully set a default max_early_data here (which gets
3024 * propagated in SSL_new(), for the following reason: setting the
3025 * SSL field causes tls_construct_stoc_early_data() to tell the
3026 * client that early data will be accepted when constructing a TLS 1.3
3027 * session ticket, and the client will accordingly send us early data
3028 * when using that ticket (if the client has early data to send).
3029 * However, in order for the early data to actually be consumed by
3030 * the application, the application must also have calls to
3031 * SSL_read_early_data(); otherwise we'll just skip past the early data
3032 * and ignore it. So, since the application must add calls to
3033 * SSL_read_early_data(), we also require them to add
3034 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3035 * eliminating the bandwidth-wasting early data in the case described
3036 * above.
bfa9a9af 3037 */
c39e4048 3038 ret->max_early_data = 0;
bfa9a9af 3039
4e8548e8
MC		 3040 /*
3041 * Default recv_max_early_data is a fully loaded single record. Could be
3042 * split across multiple records in practice. We set this differently to
3043 * max_early_data so that, in the default case, we do not advertise any
3044 * support for early_data, but if a client were to send us some (e.g.
3045 * because of an old, stale ticket) then we will tolerate it and skip over
3046 * it.
3047 */
3048 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3049
36ff232c
MC		 3050 /* By default we send two session tickets automatically in TLSv1.3 */
3051 ret->num_tickets = 2;
9d0a8bb7 3052
8a5ed9dc
TM		 3053 ssl_ctx_system_config(ret);
3054
16203f7b 3055 return ret;
0f113f3e
MC		 3056 err:
3057 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3058 err2:
e0e920b1 3059 SSL_CTX_free(ret);
16203f7b 3060 return NULL;
0f113f3e 3061}
d02b48c6 3062
c5ebfcab 3063int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 3064{
16203f7b 3065 int i;
c5ebfcab 3066
2f545ae4 3067 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 3068 return 0;
3069
3070 REF_PRINT_COUNT("SSL_CTX", ctx);
3071 REF_ASSERT_ISNT(i < 2);
3072 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 3073}
3074
4f43d0e7 3075void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 3076{
3077 int i;
d02b48c6 3078
0f113f3e
MC		 3079 if (a == NULL)
3080 return;
d02b48c6 3081
2f545ae4 3082 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 3083 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 3084 if (i > 0)
3085 return;
f3f1cf84 3086 REF_ASSERT_ISNT(i < 0);
0f113f3e 3087
222561fe 3088 X509_VERIFY_PARAM_free(a->param);
919ba009 3089 dane_ctx_final(&a->dane);
0f113f3e
MC		 3090
3091 /*
3092 * Free internal session cache. However: the remove_cb() may reference
3093 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3094 * after the sessions were flushed.
3095 * As the ex_data handling routines might also touch the session cache,
3096 * the most secure solution seems to be: empty (flush) the cache, then
3097 * free ex_data, then finally free the cache.
3098 * (See ticket [openssl.org #212].)
3099 */
3100 if (a->sessions != NULL)
3101 SSL_CTX_flush_sessions(a, 0);
3102
3103 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 3104 lh_SSL_SESSION_free(a->sessions);
222561fe 3105 X509_STORE_free(a->cert_store);
ed29e82a
RP		 3106#ifndef OPENSSL_NO_CT
3107 CTLOG_STORE_free(a->ctlog_store);
3108#endif
25aaa98a
RS		 3109 sk_SSL_CIPHER_free(a->cipher_list);
3110 sk_SSL_CIPHER_free(a->cipher_list_by_id);
f865b081 3111 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
e0e920b1 3112 ssl_cert_free(a->cert);
fa7c2637 3113 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
222561fe 3114 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 3115 a->comp_methods = NULL;
e783bae2 3116#ifndef OPENSSL_NO_SRTP
25aaa98a 3117 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 3118#endif
edc032b5 3119#ifndef OPENSSL_NO_SRP
0f113f3e 3120 SSL_CTX_SRP_CTX_free(a);
edc032b5 3121#endif
bdfe932d 3122#ifndef OPENSSL_NO_ENGINE
7c96dbcd 3123 ENGINE_finish(a->client_cert_engine);
ddac1974 3124#endif
8671b898 3125
e481f9b9 3126#ifndef OPENSSL_NO_EC
aff8c126
RS		 3127 OPENSSL_free(a->ext.ecpointformats);
3128 OPENSSL_free(a->ext.supportedgroups);
8671b898 3129#endif
aff8c126 3130 OPENSSL_free(a->ext.alpn);
4bfb96f2 3131 OPENSSL_secure_free(a->ext.secure);
8671b898 3132
16203f7b
AG		 3133 CRYPTO_THREAD_lock_free(a->lock);
3134
0f113f3e
MC		 3135 OPENSSL_free(a);
3136}
d02b48c6 3137
3ae76679 3138void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 3139{
3140 ctx->default_passwd_callback = cb;
3141}
3142
3143void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3144{
3145 ctx->default_passwd_callback_userdata = u;
3146}
3147
0c452abc
CH		 3148pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3149{
3150 return ctx->default_passwd_callback;
3151}
3152
3153void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3154{
3155 return ctx->default_passwd_callback_userdata;
3156}
3157
a974e64a
MC		 3158void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3159{
3160 s->default_passwd_callback = cb;
3161}
3162
3163void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3164{
3165 s->default_passwd_callback_userdata = u;
3166}
3167
0c452abc
CH		 3168pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3169{
3170 return s->default_passwd_callback;
3171}
3172
3173void *SSL_get_default_passwd_cb_userdata(SSL *s)
3174{
3175 return s->default_passwd_callback_userdata;
3176}
3177
0f113f3e
MC		 3178void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3179 int (*cb) (X509_STORE_CTX *, void *),
3180 void *arg)
3181{
3182 ctx->app_verify_callback = cb;
3183 ctx->app_verify_arg = arg;
3184}
3185
3186void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3187 int (*cb) (int, X509_STORE_CTX *))
3188{
3189 ctx->verify_mode = mode;
3190 ctx->default_verify_callback = cb;
3191}
3192
3193void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3194{
3195 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3196}
3197
a230b26e 3198void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3199{
3200 ssl_cert_set_cert_cb(c->cert, cb, arg);
3201}
3202
3203void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3204{
3205 ssl_cert_set_cert_cb(s->cert, cb, arg);
3206}
18d71588 3207
2cf28d61 3208void ssl_set_masks(SSL *s)
0f113f3e 3209{
6383d316 3210 CERT *c = s->cert;
f7d53487 3211 uint32_t *pvalid = s->s3->tmp.valid_flags;
bc71f910 3212 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3213 unsigned long mask_k, mask_a;
10bf4fc2 3214#ifndef OPENSSL_NO_EC
361a1191 3215 int have_ecc_cert, ecdsa_ok;
14536c8c 3216#endif
0f113f3e
MC		 3217 if (c == NULL)
3218 return;
d02b48c6 3219
bc36ee62 3220#ifndef OPENSSL_NO_DH
0f113f3e 3221 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3222#else
361a1191 3223 dh_tmp = 0;
d02b48c6
RE		 3224#endif
3225
d0ff28f8 3226 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3227 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3228 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3229#ifndef OPENSSL_NO_EC
6383d316 3230 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3231#endif
0f113f3e
MC		 3232 mask_k = 0;
3233 mask_a = 0;
0e1dba93 3234
d02b48c6 3235#ifdef CIPHER_DEBUG
b7557ccf
AG		 3236 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3237 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e
MC		 3238#endif
3239
2a9b9654 3240#ifndef OPENSSL_NO_GOST
4020c0b3 3241 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3242 mask_k |= SSL_kGOST;
3243 mask_a |= SSL_aGOST12;
3244 }
4020c0b3 3245 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3246 mask_k |= SSL_kGOST;
3247 mask_a |= SSL_aGOST12;
3248 }
4020c0b3 3249 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3250 mask_k |= SSL_kGOST;
3251 mask_a |= SSL_aGOST01;
3252 }
2a9b9654 3253#endif
0f113f3e 3254
361a1191 3255 if (rsa_enc)
0f113f3e 3256 mask_k |= SSL_kRSA;
d02b48c6 3257
0f113f3e
MC		 3258 if (dh_tmp)
3259 mask_k |= SSL_kDHE;
d02b48c6 3260
6aaa29fb
DSH		 3261 /*
3262 * If we only have an RSA-PSS certificate allow RSA authentication
3263 * if TLS 1.2 and peer supports it.
3264 */
3265
3266 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3267 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3268 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3269 mask_a |= SSL_aRSA;
d02b48c6 3270
0f113f3e
MC		 3271 if (dsa_sign) {
3272 mask_a |= SSL_aDSS;
0f113f3e 3273 }
d02b48c6 3274
0f113f3e 3275 mask_a |= SSL_aNULL;
d02b48c6 3276
0f113f3e
MC		 3277 /*
3278 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3279 * depending on the key usage extension.
3280 */
14536c8c 3281#ifndef OPENSSL_NO_EC
0f113f3e 3282 if (have_ecc_cert) {
a8d8e06b 3283 uint32_t ex_kusage;
4020c0b3 3284 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3285 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3286 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3287 ecdsa_ok = 0;
c7c46256 3288 if (ecdsa_ok)
0f113f3e 3289 mask_a |= SSL_aECDSA;
0f113f3e 3290 }
b2021556
DSH		 3291 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3292 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3293 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3294 && TLS1_get_version(s) == TLS1_2_VERSION)
3295 mask_a |= SSL_aECDSA;
0e1d6ecf
MC		 3296
3297 /* Allow Ed448 for TLS 1.2 if peer supports it */
3298 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3299 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3300 && TLS1_get_version(s) == TLS1_2_VERSION)
3301 mask_a |= SSL_aECDSA;
14536c8c 3302#endif
ea262260 3303
10bf4fc2 3304#ifndef OPENSSL_NO_EC
fe6ef247 3305 mask_k |= SSL_kECDHE;
ea262260 3306#endif
ddac1974
NL		 3307
3308#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3309 mask_k |= SSL_kPSK;
3310 mask_a |= SSL_aPSK;
526f94ad
DSH		 3311 if (mask_k & SSL_kRSA)
3312 mask_k |= SSL_kRSAPSK;
3313 if (mask_k & SSL_kDHE)
3314 mask_k |= SSL_kDHEPSK;
3315 if (mask_k & SSL_kECDHE)
3316 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3317#endif
3318
4d69f9e6
DSH		 3319 s->s3->tmp.mask_k = mask_k;
3320 s->s3->tmp.mask_a = mask_a;
0f113f3e 3321}
d02b48c6 3322
ef236ec3
DSH		 3323#ifndef OPENSSL_NO_EC
3324
a2f9200f 3325int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3326{
ce0c1f2b 3327 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3328 /* key usage, if present, must allow signing */
ce0c1f2b 3329 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3330 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3331 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3332 return 0;
3333 }
3334 }
0f113f3e
MC		 3335 return 1; /* all checks are ok */
3336}
ea262260 3337
ef236ec3
DSH		 3338#endif
3339
a398f821 3340int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3341 size_t *serverinfo_length)
3342{
a497cf25 3343 CERT_PKEY *cpk = s->s3->tmp.cert;
0f113f3e
MC		 3344 *serverinfo_length = 0;
3345
a497cf25 3346 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3347 return 0;
3348
a497cf25
DSH		 3349 *serverinfo = cpk->serverinfo;
3350 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3351 return 1;
3352}
0f113f3e
MC		 3353
3354void ssl_update_cache(SSL *s, int mode)
3355{
3356 int i;
3357
3358 /*
3359 * If the session_id_length is 0, we are not supposed to cache it, and it
3360 * would be rather hard to do anyway :-)
3361 */
3362 if (s->session->session_id_length == 0)
3363 return;
3364
d316cdcf
BK		 3365 /*
3366 * If sid_ctx_length is 0 there is no specific application context
3367 * associated with this session, so when we try to resume it and
c4fa1f7f
BK		 3368 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3369 * indication that this is actually a session for the proper application
3370 * context, and the *handshake* will fail, not just the resumption attempt.
3371 * Do not cache (on the server) these sessions that are not resumable
3372 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
d316cdcf 3373 */
c4fa1f7f 3374 if (s->server && s->session->sid_ctx_length == 0
d316cdcf
BK		 3375 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3376 return;
3377
0f113f3e 3378 i = s->session_ctx->session_cache_mode;
5d61491c 3379 if ((i & mode) != 0
ee94ec2e
MC		 3380 && (!s->hit || SSL_IS_TLS13(s))) {
3381 /*
3382 * Add the session to the internal cache. In server side TLSv1.3 we
6cc0b3c2
MC		 3383 * normally don't do this because by default it's a full stateless ticket
3384 * with only a dummy session id so there is no reason to cache it,
3385 * unless:
ee94ec2e
MC		 3386 * - we are doing early_data, in which case we cache so that we can
3387 * detect replays
3388 * - the application has set a remove_session_cb so needs to know about
3389 * session timeout events
6cc0b3c2 3390 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
ee94ec2e
MC		 3391 */
3392 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3393 && (!SSL_IS_TLS13(s)
3394 || !s->server
5d263fb7
MC		 3395 || (s->max_early_data > 0
3396 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
6cc0b3c2
MC		 3397 || s->session_ctx->remove_session_cb != NULL
3398 || (s->options & SSL_OP_NO_TICKET) != 0))
ee94ec2e
MC		 3399 SSL_CTX_add_session(s->session_ctx, s->session);
3400
3401 /*
3402 * Add the session to the external cache. We do this even in server side
3403 * TLSv1.3 without early data because some applications just want to
3404 * know about the creation of a session and aren't doing a full cache.
3405 */
3406 if (s->session_ctx->new_session_cb != NULL) {
3407 SSL_SESSION_up_ref(s->session);
3408 if (!s->session_ctx->new_session_cb(s, s->session))
3409 SSL_SESSION_free(s->session);
3410 }
0f113f3e
MC		 3411 }
3412
3413 /* auto flush every 255 connections */
3414 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
9ef9088c 3415 TSAN_QUALIFIER int *stat;
1fcb4e4d
BK		 3416 if (mode & SSL_SESS_CACHE_CLIENT)
3417 stat = &s->session_ctx->stats.sess_connect_good;
3418 else
3419 stat = &s->session_ctx->stats.sess_accept_good;
9ef9088c 3420 if ((tsan_load(stat) & 0xff) == 0xff)
0f113f3e 3421 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3422 }
3423}
d02b48c6 3424
ba168244 3425const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
0f113f3e
MC		 3426{
3427 return ctx->method;
3428}
ba168244 3429
4ebb342f 3430const SSL_METHOD *SSL_get_ssl_method(SSL *s)
0f113f3e 3431{
26a7d938 3432 return s->method;
0f113f3e 3433}
d02b48c6 3434
4ebb342f 3435int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3436{
0f113f3e
MC		 3437 int ret = 1;
3438
3439 if (s->method != meth) {
919ba009 3440 const SSL_METHOD *sm = s->method;
a230b26e 3441 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3442
919ba009 3443 if (sm->version == meth->version)
0f113f3e
MC		 3444 s->method = meth;
3445 else {
919ba009 3446 sm->ssl_free(s);
0f113f3e
MC		 3447 s->method = meth;
3448 ret = s->method->ssl_new(s);
3449 }
3450
919ba009 3451 if (hf == sm->ssl_connect)
0f113f3e 3452 s->handshake_func = meth->ssl_connect;
919ba009 3453 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3454 s->handshake_func = meth->ssl_accept;
3455 }
26a7d938 3456 return ret;
0f113f3e
MC		 3457}
3458
3459int SSL_get_error(const SSL *s, int i)
3460{
3461 int reason;
3462 unsigned long l;
3463 BIO *bio;
3464
3465 if (i > 0)
26a7d938 3466 return SSL_ERROR_NONE;
0f113f3e
MC		 3467
3468 /*
3469 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3470 * where we do encode the error
3471 */
3472 if ((l = ERR_peek_error()) != 0) {
3473 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3474 return SSL_ERROR_SYSCALL;
0f113f3e 3475 else
26a7d938 3476 return SSL_ERROR_SSL;
0f113f3e
MC		 3477 }
3478
8051ab2b
MC		 3479 if (SSL_want_read(s)) {
3480 bio = SSL_get_rbio(s);
3481 if (BIO_should_read(bio))
26a7d938 3482 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3483 else if (BIO_should_write(bio))
3484 /*
3485 * This one doesn't make too much sense ... We never try to write
3486 * to the rbio, and an application program where rbio and wbio
3487 * are separate couldn't even know what it should wait for.
3488 * However if we ever set s->rwstate incorrectly (so that we have
3489 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3490 * wbio *are* the same, this test works around that bug; so it
3491 * might be safer to keep it.
3492 */
26a7d938 3493 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3494 else if (BIO_should_io_special(bio)) {
3495 reason = BIO_get_retry_reason(bio);
3496 if (reason == BIO_RR_CONNECT)
26a7d938 3497 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3498 else if (reason == BIO_RR_ACCEPT)
26a7d938 3499 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3500 else
26a7d938 3501 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3502 }
8051ab2b 3503 }
0f113f3e 3504
8051ab2b 3505 if (SSL_want_write(s)) {
69687aa8 3506 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3507 bio = s->wbio;
3508 if (BIO_should_write(bio))
26a7d938 3509 return SSL_ERROR_WANT_WRITE;
8051ab2b 3510 else if (BIO_should_read(bio))
2e7dc7cd 3511 /*
8051ab2b 3512 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3513 */
26a7d938 3514 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3515 else if (BIO_should_io_special(bio)) {
3516 reason = BIO_get_retry_reason(bio);
3517 if (reason == BIO_RR_CONNECT)
26a7d938 3518 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3519 else if (reason == BIO_RR_ACCEPT)
26a7d938 3520 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3521 else
26a7d938 3522 return SSL_ERROR_SYSCALL;
0f113f3e 3523 }
07bbc92c 3524 }
6b1bb98f 3525 if (SSL_want_x509_lookup(s))
26a7d938 3526 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3527 if (SSL_want_async(s))
8051ab2b 3528 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3529 if (SSL_want_async_job(s))
8051ab2b 3530 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3531 if (SSL_want_client_hello_cb(s))
3532 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3533
3534 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3535 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3536 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3537
26a7d938 3538 return SSL_ERROR_SYSCALL;
0f113f3e 3539}
d02b48c6 3540
add2f5ca
MC		 3541static int ssl_do_handshake_intern(void *vargs)
3542{
3543 struct ssl_async_args *args;
3544 SSL *s;
3545
3546 args = (struct ssl_async_args *)vargs;
3547 s = args->s;
3548
3549 return s->handshake_func(s);
3550}
3551
4f43d0e7 3552int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3553{
3554 int ret = 1;
3555
3556 if (s->handshake_func == NULL) {
3557 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3558 return -1;
0f113f3e
MC		 3559 }
3560
3eaa4170 3561 ossl_statem_check_finish_init(s, -1);
49e7fe12 3562
c7f47786 3563 s->method->ssl_renegotiate_check(s, 0);
0f113f3e 3564
190b9a03
PY		 3565 if (SSL_is_server(s)) {
3566 /* clear SNI settings at server-side */
3567 OPENSSL_free(s->ext.hostname);
3568 s->ext.hostname = NULL;
3569 }
3570
0f113f3e 3571 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3572 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3573 struct ssl_async_args args;
3574
3575 args.s = s;
3576
7fecbf6f 3577 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3578 } else {
3579 ret = s->handshake_func(s);
3580 }
0f113f3e 3581 }
add2f5ca 3582 return ret;
0f113f3e
MC		 3583}
3584
4f43d0e7 3585void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3586{
3587 s->server = 1;
3588 s->shutdown = 0;
fe3a3291 3589 ossl_statem_clear(s);
0f113f3e 3590 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3591 clear_ciphers(s);
0f113f3e 3592}
d02b48c6 3593
4f43d0e7 3594void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3595{
3596 s->server = 0;
3597 s->shutdown = 0;
fe3a3291 3598 ossl_statem_clear(s);
0f113f3e 3599 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3600 clear_ciphers(s);
0f113f3e 3601}
d02b48c6 3602
4f43d0e7 3603int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3604{
3605 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3606 return 0;
0f113f3e 3607}
d02b48c6 3608
41a15c4f 3609int ssl_undefined_void_function(void)
0f113f3e
MC		 3610{
3611 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3612 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3613 return 0;
0f113f3e 3614}
41a15c4f 3615
0821bcd4 3616int ssl_undefined_const_function(const SSL *s)
0f113f3e 3617{
26a7d938 3618 return 0;
0f113f3e 3619}
0821bcd4 3620
2b8fa1d5 3621const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3622{
3623 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3624 return NULL;
0f113f3e 3625}
d02b48c6 3626
3eb2aff4 3627const char *ssl_protocol_to_string(int version)
7d650072 3628{
2abacef1
MC		 3629 switch(version)
3630 {
3631 case TLS1_3_VERSION:
582a17d6 3632 return "TLSv1.3";
2abacef1
MC		 3633
3634 case TLS1_2_VERSION:
7d650072 3635 return "TLSv1.2";
2abacef1
MC		 3636
3637 case TLS1_1_VERSION:
7d650072 3638 return "TLSv1.1";
2abacef1
MC		 3639
3640 case TLS1_VERSION:
ee3a6c64 3641 return "TLSv1";
2abacef1
MC		 3642
3643 case SSL3_VERSION:
7d650072 3644 return "SSLv3";
2abacef1
MC		 3645
3646 case DTLS1_BAD_VER:
7d650072 3647 return "DTLSv0.9";
2abacef1
MC		 3648
3649 case DTLS1_VERSION:
7d650072 3650 return "DTLSv1";
2abacef1
MC		 3651
3652 case DTLS1_2_VERSION:
7d650072 3653 return "DTLSv1.2";
2abacef1
MC		 3654
3655 default:
3656 return "unknown";
3657 }
0f113f3e 3658}
d02b48c6 3659
7d650072
KR		 3660const char *SSL_get_version(const SSL *s)
3661{
3eb2aff4 3662 return ssl_protocol_to_string(s->version);
7d650072
KR		 3663}
3664
4f43d0e7 3665SSL *SSL_dup(SSL *s)
0f113f3e
MC		 3666{
3667 STACK_OF(X509_NAME) *sk;
3668 X509_NAME *xn;
3669 SSL *ret;
3670 int i;
3671
919ba009
VD		 3672 /* If we're not quiescent, just up_ref! */
3673 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3674 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3675 return s;
3676 }
3677
3678 /*
3679 * Otherwise, copy configuration state, and session if set.
3680 */
0f113f3e 3681 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3682 return NULL;
0f113f3e 3683
0f113f3e 3684 if (s->session != NULL) {
919ba009
VD		 3685 /*
3686 * Arranges to share the same session via up_ref. This "copies"
3687 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3688 */
61986d32 3689 if (!SSL_copy_session_id(ret, s))
17dd65e6 3690 goto err;
0f113f3e
MC		 3691 } else {
3692 /*
3693 * No session has been established yet, so we have to expect that
3694 * s->cert or ret->cert will be changed later -- they should not both
3695 * point to the same object, and thus we can't use
3696 * SSL_copy_session_id.
3697 */
919ba009
VD		 3698 if (!SSL_set_ssl_method(ret, s->method))
3699 goto err;
0f113f3e
MC		 3700
3701 if (s->cert != NULL) {
e0e920b1 3702 ssl_cert_free(ret->cert);
0f113f3e
MC		 3703 ret->cert = ssl_cert_dup(s->cert);
3704 if (ret->cert == NULL)
3705 goto err;
3706 }
3707
348240c6
MC		 3708 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3709 (int)s->sid_ctx_length))
69f68237 3710 goto err;
0f113f3e
MC		 3711 }
3712
9f6b22b8
VD		 3713 if (!ssl_dane_dup(ret, s))
3714 goto err;
919ba009 3715 ret->version = s->version;
0f113f3e
MC		 3716 ret->options = s->options;
3717 ret->mode = s->mode;
3718 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3719 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3720 ret->msg_callback = s->msg_callback;
3721 ret->msg_callback_arg = s->msg_callback_arg;
3722 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3723 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3724 ret->generate_session_id = s->generate_session_id;
3725
3726 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3727
0f113f3e
MC		 3728 /* copy app data, a little dangerous perhaps */
3729 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3730 goto err;
3731
3732 /* setup rbio, and wbio */
3733 if (s->rbio != NULL) {
3734 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3735 goto err;
3736 }
3737 if (s->wbio != NULL) {
3738 if (s->wbio != s->rbio) {
3739 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3740 goto err;
65e2d672
MC		 3741 } else {
3742 BIO_up_ref(ret->rbio);
0f113f3e 3743 ret->wbio = ret->rbio;
65e2d672 3744 }
0f113f3e 3745 }
919ba009 3746
0f113f3e 3747 ret->server = s->server;
919ba009
VD		 3748 if (s->handshake_func) {
3749 if (s->server)
3750 SSL_set_accept_state(ret);
3751 else
3752 SSL_set_connect_state(ret);
3753 }
0f113f3e 3754 ret->shutdown = s->shutdown;
0f113f3e
MC		 3755 ret->hit = s->hit;
3756
a974e64a
MC		 3757 ret->default_passwd_callback = s->default_passwd_callback;
3758 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3759
0f113f3e
MC		 3760 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3761
3762 /* dup the cipher_list and cipher_list_by_id stacks */
3763 if (s->cipher_list != NULL) {
3764 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3765 goto err;
3766 }
3767 if (s->cipher_list_by_id != NULL)
3768 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3769 == NULL)
3770 goto err;
3771
3772 /* Dup the client_CA list */
fa7c2637
DSH		 3773 if (s->ca_names != NULL) {
3774 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
0f113f3e 3775 goto err;
fa7c2637 3776 ret->ca_names = sk;
0f113f3e
MC		 3777 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3778 xn = sk_X509_NAME_value(sk, i);
3779 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3780 X509_NAME_free(xn);
3781 goto err;
3782 }
3783 }
3784 }
66696478 3785 return ret;
0f113f3e 3786
0f113f3e 3787 err:
66696478
RS		 3788 SSL_free(ret);
3789 return NULL;
0f113f3e 3790}
d02b48c6 3791
4f43d0e7 3792void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3793{
3794 if (s->enc_read_ctx != NULL) {
846ec07d 3795 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3796 s->enc_read_ctx = NULL;
3797 }
3798 if (s->enc_write_ctx != NULL) {
846ec07d 3799 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3800 s->enc_write_ctx = NULL;
3801 }
09b6c2ef 3802#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3803 COMP_CTX_free(s->expand);
3804 s->expand = NULL;
3805 COMP_CTX_free(s->compress);
3806 s->compress = NULL;
0f113f3e
MC		 3807#endif
3808}
d02b48c6 3809
0821bcd4 3810X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3811{
3812 if (s->cert != NULL)
26a7d938 3813 return s->cert->key->x509;
0f113f3e 3814 else
26a7d938 3815 return NULL;
0f113f3e 3816}
d02b48c6 3817
a25f9adc 3818EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3819{
3820 if (s->cert != NULL)
26a7d938 3821 return s->cert->key->privatekey;
0f113f3e 3822 else
26a7d938 3823 return NULL;
0f113f3e 3824}
d02b48c6 3825
a25f9adc 3826X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 3827{
3828 if (ctx->cert != NULL)
3829 return ctx->cert->key->x509;
3830 else
3831 return NULL;
3832}
a25f9adc
DSH		 3833
3834EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 3835{
3836 if (ctx->cert != NULL)
3837 return ctx->cert->key->privatekey;
3838 else
3839 return NULL;
3840}
a25f9adc 3841
babb3798 3842const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 3843{
3844 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 3845 return s->session->cipher;
3846 return NULL;
0f113f3e
MC		 3847}
3848
0aed6e44
BK		 3849const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3850{
3851 return s->s3->tmp.new_cipher;
3852}
3853
377dcdba 3854const COMP_METHOD *SSL_get_current_compression(SSL *s)
0f113f3e 3855{
9a555706
RS		 3856#ifndef OPENSSL_NO_COMP
3857 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3858#else
3859 return NULL;
3860#endif
0f113f3e 3861}
377dcdba
RL		 3862
3863const COMP_METHOD *SSL_get_current_expansion(SSL *s)
0f113f3e 3864{
9a555706
RS		 3865#ifndef OPENSSL_NO_COMP
3866 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3867#else
3868 return NULL;
0f113f3e 3869#endif
9a555706 3870}
0f113f3e 3871
46417569 3872int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 3873{
3874 BIO *bbio;
3875
2e7dc7cd
MC		 3876 if (s->bbio != NULL) {
3877 /* Already buffered. */
3878 return 1;
0f113f3e 3879 }
46417569 3880
2e7dc7cd
MC		 3881 bbio = BIO_new(BIO_f_buffer());
3882 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3883 BIO_free(bbio);
0f113f3e 3884 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 3885 return 0;
0f113f3e 3886 }
2e7dc7cd
MC		 3887 s->bbio = bbio;
3888 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 3889
3890 return 1;
0f113f3e 3891}
413c4f45 3892
b77f3ed1 3893int ssl_free_wbio_buffer(SSL *s)
0f113f3e 3894{
62adbcee 3895 /* callers ensure s is never null */
0f113f3e 3896 if (s->bbio == NULL)
b77f3ed1 3897 return 1;
0f113f3e 3898
2e7dc7cd 3899 s->wbio = BIO_pop(s->wbio);
0f113f3e
MC		 3900 BIO_free(s->bbio);
3901 s->bbio = NULL;
b77f3ed1
MC		 3902
3903 return 1;
0f113f3e
MC		 3904}
3905
3906void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3907{
3908 ctx->quiet_shutdown = mode;
3909}
58964a49 3910
0821bcd4 3911int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 3912{
26a7d938 3913 return ctx->quiet_shutdown;
0f113f3e 3914}
58964a49 3915
0f113f3e
MC		 3916void SSL_set_quiet_shutdown(SSL *s, int mode)
3917{
3918 s->quiet_shutdown = mode;
3919}
58964a49 3920
0821bcd4 3921int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 3922{
26a7d938 3923 return s->quiet_shutdown;
0f113f3e 3924}
58964a49 3925
0f113f3e
MC		 3926void SSL_set_shutdown(SSL *s, int mode)
3927{
3928 s->shutdown = mode;
3929}
58964a49 3930
0821bcd4 3931int SSL_get_shutdown(const SSL *s)
0f113f3e 3932{
6546e9b2 3933 return s->shutdown;
0f113f3e 3934}
58964a49 3935
0821bcd4 3936int SSL_version(const SSL *s)
0f113f3e 3937{
6546e9b2
AG		 3938 return s->version;
3939}
3940
3941int SSL_client_version(const SSL *s)
3942{
3943 return s->client_version;
0f113f3e 3944}
58964a49 3945
0821bcd4 3946SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 3947{
6546e9b2 3948 return ssl->ctx;
0f113f3e
MC		 3949}
3950
3951SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3952{
24a0d393 3953 CERT *new_cert;
0f113f3e
MC		 3954 if (ssl->ctx == ctx)
3955 return ssl->ctx;
0f113f3e 3956 if (ctx == NULL)
222da979 3957 ctx = ssl->session_ctx;
24a0d393
KR		 3958 new_cert = ssl_cert_dup(ctx->cert);
3959 if (new_cert == NULL) {
3960 return NULL;
0f113f3e 3961 }
21181889
MC		 3962
3963 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3964 ssl_cert_free(new_cert);
3965 return NULL;
3966 }
3967
24a0d393
KR		 3968 ssl_cert_free(ssl->cert);
3969 ssl->cert = new_cert;
0f113f3e
MC		 3970
3971 /*
3972 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3973 * so setter APIs must prevent invalid lengths from entering the system.
3974 */
380a522f
MC		 3975 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3976 return NULL;
0f113f3e
MC		 3977
3978 /*
3979 * If the session ID context matches that of the parent SSL_CTX,
3980 * inherit it from the new SSL_CTX as well. If however the context does
3981 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3982 * leave it unchanged.
3983 */
3984 if ((ssl->ctx != NULL) &&
3985 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3986 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3987 ssl->sid_ctx_length = ctx->sid_ctx_length;
3988 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3989 }
3990
16203f7b 3991 SSL_CTX_up_ref(ctx);
a230b26e 3992 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 3993 ssl->ctx = ctx;
3994
16203f7b 3995 return ssl->ctx;
0f113f3e 3996}
ed3883d2 3997
4f43d0e7 3998int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 3999{
26a7d938 4000 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 4001}
58964a49 4002
d84a7b20
MC		 4003int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4004{
4005 X509_LOOKUP *lookup;
4006
4007 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4008 if (lookup == NULL)
4009 return 0;
4010 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4011
4012 /* Clear any errors if the default directory does not exist */
4013 ERR_clear_error();
4014
4015 return 1;
4016}
4017
4018int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4019{
4020 X509_LOOKUP *lookup;
4021
4022 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4023 if (lookup == NULL)
4024 return 0;
4025
4026 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4027
4028 /* Clear any errors if the default file does not exist */
4029 ERR_clear_error();
4030
4031 return 1;
4032}
4033
303c0028 4034int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 4035 const char *CApath)
4036{
26a7d938 4037 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
0f113f3e 4038}
58964a49 4039
45d87a1f 4040void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 4041 void (*cb) (const SSL *ssl, int type, int val))
4042{
4043 ssl->info_callback = cb;
4044}
4045
4046/*
4047 * One compiler (Diab DCC) doesn't like argument names in returned function
4048 * pointer.
4049 */
4050void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4051 int /* type */ ,
4052 int /* val */ ) {
4053 return ssl->info_callback;
4054}
58964a49 4055
0f113f3e
MC		 4056void SSL_set_verify_result(SSL *ssl, long arg)
4057{
4058 ssl->verify_result = arg;
4059}
58964a49 4060
0821bcd4 4061long SSL_get_verify_result(const SSL *ssl)
0f113f3e 4062{
26a7d938 4063 return ssl->verify_result;
0f113f3e
MC		 4064}
4065
d9f1c639 4066size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4067{
6b8f5d0d 4068 if (outlen == 0)
858618e7
NM		 4069 return sizeof(ssl->s3->client_random);
4070 if (outlen > sizeof(ssl->s3->client_random))
4071 outlen = sizeof(ssl->s3->client_random);
4072 memcpy(out, ssl->s3->client_random, outlen);
d9f1c639 4073 return outlen;
858618e7
NM		 4074}
4075
d9f1c639 4076size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 4077{
6b8f5d0d 4078 if (outlen == 0)
858618e7
NM		 4079 return sizeof(ssl->s3->server_random);
4080 if (outlen > sizeof(ssl->s3->server_random))
4081 outlen = sizeof(ssl->s3->server_random);
4082 memcpy(out, ssl->s3->server_random, outlen);
d9f1c639 4083 return outlen;
858618e7
NM		 4084}
4085
d9f1c639 4086size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 4087 unsigned char *out, size_t outlen)
858618e7 4088{
d9f1c639
MC		 4089 if (outlen == 0)
4090 return session->master_key_length;
8c1a5343 4091 if (outlen > session->master_key_length)
858618e7
NM		 4092 outlen = session->master_key_length;
4093 memcpy(out, session->master_key, outlen);
d9f1c639 4094 return outlen;
858618e7
NM		 4095}
4096
725b0f1e 4097int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 4098 size_t len)
4099{
4100 if (len > sizeof(sess->master_key))
4101 return 0;
4102
4103 memcpy(sess->master_key, in, len);
4104 sess->master_key_length = len;
911d63f2
MC		 4105 return 1;
4106}
4107
4108
0f113f3e
MC		 4109int SSL_set_ex_data(SSL *s, int idx, void *arg)
4110{
26a7d938 4111 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4112}
4113
4114void *SSL_get_ex_data(const SSL *s, int idx)
4115{
26a7d938 4116 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 4117}
4118
0f113f3e
MC		 4119int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4120{
26a7d938 4121 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 4122}
4123
4124void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4125{
26a7d938 4126 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 4127}
58964a49 4128
0821bcd4 4129X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 4130{
26a7d938 4131 return ctx->cert_store;
0f113f3e 4132}
413c4f45 4133
0f113f3e
MC		 4134void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4135{
222561fe 4136 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 4137 ctx->cert_store = store;
4138}
413c4f45 4139
b50052db
TS		 4140void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4141{
4142 if (store != NULL)
4143 X509_STORE_up_ref(store);
4144 SSL_CTX_set_cert_store(ctx, store);
4145}
4146
0821bcd4 4147int SSL_want(const SSL *s)
0f113f3e 4148{
26a7d938 4149 return s->rwstate;
0f113f3e 4150}
413c4f45 4151
0f113f3e 4152/**
4f43d0e7
BL		 4153 * \brief Set the callback for generating temporary DH keys.
4154 * \param ctx the SSL context.
4155 * \param dh the callback
4156 */
4157
bc36ee62 4158#ifndef OPENSSL_NO_DH
0f113f3e
MC		 4159void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4160 DH *(*dh) (SSL *ssl, int is_export,
4161 int keylength))
4162{
4163 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4164}
f8c3c05d 4165
0f113f3e
MC		 4166void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4167 int keylength))
4168{
4169 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4170}
79df9d62 4171#endif
15d21c2d 4172
ddac1974
NL		 4173#ifndef OPENSSL_NO_PSK
4174int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 4175{
4176 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 4177 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 4178 return 0;
4179 }
df6da24b 4180 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 4181 if (identity_hint != NULL) {
7644a9ae 4182 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4183 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4184 return 0;
4185 } else
df6da24b 4186 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4187 return 1;
4188}
ddac1974
NL		 4189
4190int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4191{
4192 if (s == NULL)
4193 return 0;
4194
0f113f3e
MC		 4195 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4196 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4197 return 0;
4198 }
df6da24b 4199 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4200 if (identity_hint != NULL) {
7644a9ae 4201 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4202 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4203 return 0;
4204 } else
df6da24b 4205 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4206 return 1;
4207}
ddac1974
NL		 4208
4209const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4210{
4211 if (s == NULL || s->session == NULL)
4212 return NULL;
26a7d938 4213 return s->session->psk_identity_hint;
0f113f3e 4214}
ddac1974
NL		 4215
4216const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4217{
4218 if (s == NULL || s->session == NULL)
4219 return NULL;
26a7d938 4220 return s->session->psk_identity;
0f113f3e 4221}
7806f3dd 4222
8cbfcc70 4223void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4224{
4225 s->psk_client_callback = cb;
4226}
7806f3dd 4227
8cbfcc70 4228void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4229{
4230 ctx->psk_client_callback = cb;
4231}
7806f3dd 4232
8cbfcc70 4233void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4234{
4235 s->psk_server_callback = cb;
4236}
7806f3dd 4237
8cbfcc70 4238void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4239{
4240 ctx->psk_server_callback = cb;
4241}
4242#endif
4243
f46184bd
MC		 4244void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4245{
4246 s->psk_find_session_cb = cb;
4247}
4248
4249void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4250 SSL_psk_find_session_cb_func cb)
4251{
4252 ctx->psk_find_session_cb = cb;
4253}
4254
4255void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4256{
4257 s->psk_use_session_cb = cb;
4258}
4259
4260void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4261 SSL_psk_use_session_cb_func cb)
4262{
4263 ctx->psk_use_session_cb = cb;
4264}
4265
0f113f3e
MC		 4266void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4267 void (*cb) (int write_p, int version,
4268 int content_type, const void *buf,
4269 size_t len, SSL *ssl, void *arg))
4270{
4271 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4272}
4273
4274void SSL_set_msg_callback(SSL *ssl,
4275 void (*cb) (int write_p, int version,
4276 int content_type, const void *buf,
4277 size_t len, SSL *ssl, void *arg))
4278{
4279 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4280}
a661b653 4281
7c2d4fee 4282void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4283 int (*cb) (SSL *ssl,
4284 int
4285 is_forward_secure))
4286{
4287 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4288 (void (*)(void))cb);
4289}
4290
7c2d4fee 4291void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4292 int (*cb) (SSL *ssl,
4293 int is_forward_secure))
4294{
4295 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4296 (void (*)(void))cb);
4297}
4298
c649d10d
TS		 4299void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4300 size_t (*cb) (SSL *ssl, int type,
4301 size_t len, void *arg))
4302{
4303 ctx->record_padding_cb = cb;
4304}
4305
4306void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4307{
4308 ctx->record_padding_arg = arg;
4309}
4310
4311void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4312{
4313 return ctx->record_padding_arg;
4314}
4315
4316int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4317{
4318 /* block size of 0 or 1 is basically no padding */
4319 if (block_size == 1)
4320 ctx->block_padding = 0;
4321 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4322 ctx->block_padding = block_size;
4323 else
4324 return 0;
4325 return 1;
4326}
4327
4328void SSL_set_record_padding_callback(SSL *ssl,
4329 size_t (*cb) (SSL *ssl, int type,
4330 size_t len, void *arg))
4331{
4332 ssl->record_padding_cb = cb;
4333}
4334
4335void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4336{
4337 ssl->record_padding_arg = arg;
4338}
4339
4340void *SSL_get_record_padding_callback_arg(SSL *ssl)
4341{
4342 return ssl->record_padding_arg;
4343}
4344
4345int SSL_set_block_padding(SSL *ssl, size_t block_size)
4346{
4347 /* block size of 0 or 1 is basically no padding */
4348 if (block_size == 1)
4349 ssl->block_padding = 0;
4350 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4351 ssl->block_padding = block_size;
4352 else
4353 return 0;
4354 return 1;
4355}
4356
9d0a8bb7
MC		 4357int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4358{
4359 s->num_tickets = num_tickets;
4360
4361 return 1;
4362}
4363
4364size_t SSL_get_num_tickets(SSL *s)
4365{
4366 return s->num_tickets;
4367}
4368
4369int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4370{
4371 ctx->num_tickets = num_tickets;
4372
4373 return 1;
4374}
4375
4376size_t SSL_CTX_get_num_tickets(SSL_CTX *ctx)
4377{
4378 return ctx->num_tickets;
4379}
4380
0f113f3e
MC		 4381/*
4382 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4383 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4384 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4385 * Returns the newly allocated ctx;
8671b898 4386 */
b948e2c5 4387
0f113f3e 4388EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4389{
0f113f3e 4390 ssl_clear_hash_ctx(hash);
bfb0641f 4391 *hash = EVP_MD_CTX_new();
5f3d93e4 4392 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4393 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4394 *hash = NULL;
4395 return NULL;
4396 }
0f113f3e 4397 return *hash;
b948e2c5 4398}
0f113f3e
MC		 4399
4400void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4401{
4402
0d9824c1 4403 EVP_MD_CTX_free(*hash);
0f113f3e 4404 *hash = NULL;
b948e2c5 4405}
a661b653 4406
48fbcbac 4407/* Retrieve handshake hashes */
8c1a5343
MC		 4408int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4409 size_t *hashlen)
48fbcbac 4410{
6e59a892 4411 EVP_MD_CTX *ctx = NULL;
28ba2541 4412 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
8c1a5343
MC		 4413 int hashleni = EVP_MD_CTX_size(hdgst);
4414 int ret = 0;
4415
f63a17d6
MC		 4416 if (hashleni < 0 || (size_t)hashleni > outlen) {
4417 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4418 ERR_R_INTERNAL_ERROR);
28ba2541 4419 goto err;
f63a17d6 4420 }
8c1a5343 4421
bfb0641f 4422 ctx = EVP_MD_CTX_new();
8c1a5343 4423 if (ctx == NULL)
6e59a892 4424 goto err;
8c1a5343 4425
6e59a892 4426 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
f63a17d6
MC		 4427 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4428 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4429 ERR_R_INTERNAL_ERROR);
8c1a5343 4430 goto err;
f63a17d6 4431 }
8c1a5343
MC		 4432
4433 *hashlen = hashleni;
4434
4435 ret = 1;
48fbcbac 4436 err:
bfb0641f 4437 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4438 return ret;
4439}
4440
b577fd0b 4441int SSL_session_reused(SSL *s)
0f113f3e
MC		 4442{
4443 return s->hit;
4444}
08557cf2 4445
69443116 4446int SSL_is_server(const SSL *s)
0f113f3e
MC		 4447{
4448 return s->server;
4449}
87adf1fa 4450
47153c72
RS		 4451#if OPENSSL_API_COMPAT < 0x10100000L
4452void SSL_set_debug(SSL *s, int debug)
4453{
4454 /* Old function was do-nothing anyway... */
4455 (void)s;
4456 (void)debug;
4457}
4458#endif
4459
b362ccab 4460void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4461{
4462 s->cert->sec_level = level;
4463}
b362ccab
DSH		 4464
4465int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4466{
4467 return s->cert->sec_level;
4468}
b362ccab 4469
0f113f3e 4470void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4471 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4472 int op, int bits, int nid,
4473 void *other, void *ex))
0f113f3e
MC		 4474{
4475 s->cert->sec_cb = cb;
4476}
b362ccab 4477
a230b26e
EK		 4478int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4479 const SSL_CTX *ctx, int op,
4480 int bits, int nid, void *other,
4481 void *ex) {
0f113f3e
MC		 4482 return s->cert->sec_cb;
4483}
b362ccab
DSH		 4484
4485void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4486{
4487 s->cert->sec_ex = ex;
4488}
b362ccab
DSH		 4489
4490void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4491{
4492 return s->cert->sec_ex;
4493}
b362ccab
DSH		 4494
4495void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4496{
4497 ctx->cert->sec_level = level;
4498}
b362ccab
DSH		 4499
4500int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4501{
4502 return ctx->cert->sec_level;
4503}
b362ccab 4504
0f113f3e 4505void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4506 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4507 int op, int bits, int nid,
4508 void *other, void *ex))
0f113f3e
MC		 4509{
4510 ctx->cert->sec_cb = cb;
4511}
b362ccab 4512
e4646a89
KR		 4513int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4514 const SSL_CTX *ctx,
0f113f3e
MC		 4515 int op, int bits,
4516 int nid,
4517 void *other,
4518 void *ex) {
4519 return ctx->cert->sec_cb;
4520}
b362ccab
DSH		 4521
4522void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4523{
4524 ctx->cert->sec_ex = ex;
4525}
b362ccab
DSH		 4526
4527void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4528{
4529 return ctx->cert->sec_ex;
4530}
b362ccab 4531
8106cb8b
VD		 4532/*
4533 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4534 * can return unsigned long, instead of the generic long return value from the
4535 * control interface.
4536 */
4537unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4538{
4539 return ctx->options;
4540}
a230b26e
EK		 4541
4542unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4543{
4544 return s->options;
4545}
a230b26e 4546
8106cb8b
VD		 4547unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4548{
4549 return ctx->options |= op;
4550}
a230b26e 4551
8106cb8b
VD		 4552unsigned long SSL_set_options(SSL *s, unsigned long op)
4553{
4554 return s->options |= op;
4555}
a230b26e 4556
8106cb8b
VD		 4557unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4558{
4559 return ctx->options &= ~op;
4560}
a230b26e 4561
8106cb8b
VD		 4562unsigned long SSL_clear_options(SSL *s, unsigned long op)
4563{
4564 return s->options &= ~op;
4565}
4566
696178ed
DSH		 4567STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4568{
4569 return s->verified_chain;
4570}
4571
0f113f3e 4572IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4573
4574#ifndef OPENSSL_NO_CT
4575
4576/*
4577 * Moves SCTs from the |src| stack to the |dst| stack.
4578 * The source of each SCT will be set to |origin|.
4579 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4580 * the caller.
4581 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4582 */
a230b26e
EK		 4583static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4584 sct_source_t origin)
ed29e82a
RP		 4585{
4586 int scts_moved = 0;
4587 SCT *sct = NULL;
4588
4589 if (*dst == NULL) {
4590 *dst = sk_SCT_new_null();
4591 if (*dst == NULL) {
4592 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4593 goto err;
4594 }
4595 }
4596
4597 while ((sct = sk_SCT_pop(src)) != NULL) {
4598 if (SCT_set_source(sct, origin) != 1)
4599 goto err;
4600
4601 if (sk_SCT_push(*dst, sct) <= 0)
4602 goto err;
4603 scts_moved += 1;
4604 }
4605
4606 return scts_moved;
a230b26e 4607 err:
ed29e82a 4608 if (sct != NULL)
a230b26e 4609 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4610 return -1;
ed29e82a
RP		 4611}
4612
4613/*
a230b26e 4614 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4615 * Returns the number of SCTs extracted.
a230b26e 4616 */
ed29e82a
RP		 4617static int ct_extract_tls_extension_scts(SSL *s)
4618{
4619 int scts_extracted = 0;
4620
aff8c126
RS		 4621 if (s->ext.scts != NULL) {
4622 const unsigned char *p = s->ext.scts;
4623 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4624
4625 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4626
4627 SCT_LIST_free(scts);
4628 }
4629
4630 return scts_extracted;
4631}
4632
4633/*
4634 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4635 * contains an SCT X509 extension. They will be stored in |s->scts|.
4636 * Returns:
4637 * - The number of SCTs extracted, assuming an OCSP response exists.
4638 * - 0 if no OCSP response exists or it contains no SCTs.
4639 * - A negative integer if an error occurs.
4640 */
4641static int ct_extract_ocsp_response_scts(SSL *s)
4642{
a230b26e 4643# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4644 int scts_extracted = 0;
4645 const unsigned char *p;
4646 OCSP_BASICRESP *br = NULL;
4647 OCSP_RESPONSE *rsp = NULL;
4648 STACK_OF(SCT) *scts = NULL;
4649 int i;
4650
aff8c126 4651 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4652 goto err;
4653
aff8c126
RS		 4654 p = s->ext.ocsp.resp;
4655 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4656 if (rsp == NULL)
4657 goto err;
4658
4659 br = OCSP_response_get1_basic(rsp);
4660 if (br == NULL)
4661 goto err;
4662
4663 for (i = 0; i < OCSP_resp_count(br); ++i) {
4664 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4665
4666 if (single == NULL)
4667 continue;
4668
a230b26e
EK		 4669 scts =
4670 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4671 scts_extracted =
4672 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4673 if (scts_extracted < 0)
4674 goto err;
4675 }
a230b26e 4676 err:
ed29e82a
RP		 4677 SCT_LIST_free(scts);
4678 OCSP_BASICRESP_free(br);
4679 OCSP_RESPONSE_free(rsp);
4680 return scts_extracted;
a230b26e 4681# else
3e41ac35
MC		 4682 /* Behave as if no OCSP response exists */
4683 return 0;
a230b26e 4684# endif
ed29e82a
RP		 4685}
4686
4687/*
4688 * Attempts to extract SCTs from the peer certificate.
4689 * Return the number of SCTs extracted, or a negative integer if an error
4690 * occurs.
4691 */
4692static int ct_extract_x509v3_extension_scts(SSL *s)
4693{
4694 int scts_extracted = 0;
3f3c7d26 4695 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4696
4697 if (cert != NULL) {
4698 STACK_OF(SCT) *scts =
4699 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4700
4701 scts_extracted =
4702 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4703
4704 SCT_LIST_free(scts);
4705 }
4706
4707 return scts_extracted;
4708}
4709
4710/*
4711 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4712 * response (if it exists) and X509v3 extensions in the certificate.
4713 * Returns NULL if an error occurs.
4714 */
4715const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4716{
4717 if (!s->scts_parsed) {
4718 if (ct_extract_tls_extension_scts(s) < 0 ||
4719 ct_extract_ocsp_response_scts(s) < 0 ||
4720 ct_extract_x509v3_extension_scts(s) < 0)
4721 goto err;
4722
4723 s->scts_parsed = 1;
4724 }
4725 return s->scts;
a230b26e 4726 err:
ed29e82a
RP		 4727 return NULL;
4728}
4729
a230b26e 4730static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4731 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4732{
43341433
VD		 4733 return 1;
4734}
4735
a230b26e 4736static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4737 const STACK_OF(SCT) *scts, void *unused_arg)
4738{
4739 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4740 int i;
ed29e82a 4741
43341433
VD		 4742 for (i = 0; i < count; ++i) {
4743 SCT *sct = sk_SCT_value(scts, i);
4744 int status = SCT_get_validation_status(sct);
4745
4746 if (status == SCT_VALIDATION_STATUS_VALID)
4747 return 1;
4748 }
4749 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4750 return 0;
4751}
4752
4753int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4754 void *arg)
4755{
ed29e82a
RP		 4756 /*
4757 * Since code exists that uses the custom extension handler for CT, look
4758 * for this and throw an error if they have already registered to use CT.
4759 */
4760 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4761 TLSEXT_TYPE_signed_certificate_timestamp))
4762 {
ed29e82a
RP		 4763 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4764 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4765 return 0;
ed29e82a
RP		 4766 }
4767
ed29e82a 4768 if (callback != NULL) {
a230b26e
EK		 4769 /*
4770 * If we are validating CT, then we MUST accept SCTs served via OCSP
4771 */
ed29e82a 4772 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4773 return 0;
ed29e82a
RP		 4774 }
4775
43341433
VD		 4776 s->ct_validation_callback = callback;
4777 s->ct_validation_callback_arg = arg;
4778
4779 return 1;
ed29e82a
RP		 4780}
4781
43341433 4782int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 4783 ssl_ct_validation_cb callback, void *arg)
ed29e82a 4784{
ed29e82a
RP		 4785 /*
4786 * Since code exists that uses the custom extension handler for CT, look for
4787 * this and throw an error if they have already registered to use CT.
4788 */
4789 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 4790 TLSEXT_TYPE_signed_certificate_timestamp))
4791 {
ed29e82a
RP		 4792 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4793 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4794 return 0;
ed29e82a
RP		 4795 }
4796
4797 ctx->ct_validation_callback = callback;
4798 ctx->ct_validation_callback_arg = arg;
43341433 4799 return 1;
ed29e82a
RP		 4800}
4801
43341433 4802int SSL_ct_is_enabled(const SSL *s)
ed29e82a 4803{
43341433 4804 return s->ct_validation_callback != NULL;
ed29e82a
RP		 4805}
4806
43341433 4807int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 4808{
43341433 4809 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 4810}
4811
4d482ee2 4812int ssl_validate_ct(SSL *s)
ed29e82a
RP		 4813{
4814 int ret = 0;
3f3c7d26 4815 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 4816 X509 *issuer;
b9aec69a 4817 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 4818 CT_POLICY_EVAL_CTX *ctx = NULL;
4819 const STACK_OF(SCT) *scts;
4820
43341433
VD		 4821 /*
4822 * If no callback is set, the peer is anonymous, or its chain is invalid,
4823 * skip SCT validation - just return success. Applications that continue
4824 * handshakes without certificates, with unverified chains, or pinned leaf
4825 * certificates are outside the scope of the WebPKI and CT.
4826 *
4827 * The above exclusions notwithstanding the vast majority of peers will
4828 * have rather ordinary certificate chains validated by typical
4829 * applications that perform certificate verification and therefore will
4830 * process SCTs when enabled.
4831 */
4832 if (s->ct_validation_callback == NULL || cert == NULL ||
4833 s->verify_result != X509_V_OK ||
a230b26e 4834 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 4835 return 1;
4836
43341433
VD		 4837 /*
4838 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4839 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4840 */
4841 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4842 switch (dane->mtlsa->usage) {
4843 case DANETLS_USAGE_DANE_TA:
4844 case DANETLS_USAGE_DANE_EE:
4845 return 1;
4846 }
ed29e82a
RP		 4847 }
4848
ed29e82a
RP		 4849 ctx = CT_POLICY_EVAL_CTX_new();
4850 if (ctx == NULL) {
f63a17d6
MC		 4851 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
4852 ERR_R_MALLOC_FAILURE);
ed29e82a
RP		 4853 goto end;
4854 }
4855
43341433 4856 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 4857 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4858 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4859 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 4860 CT_POLICY_EVAL_CTX_set_time(
4861 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 4862
4863 scts = SSL_get0_peer_scts(s);
4864
43341433
VD		 4865 /*
4866 * This function returns success (> 0) only when all the SCTs are valid, 0
4867 * when some are invalid, and < 0 on various internal errors (out of
4868 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4869 * reason to abort the handshake, that decision is up to the callback.
4870 * Therefore, we error out only in the unexpected case that the return
4871 * value is negative.
4872 *
4873 * XXX: One might well argue that the return value of this function is an
f430ba31 4874 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 4875 * status of each of the provided SCTs. So long as it correctly separates
4876 * the wheat from the chaff it should return success. Failure in this case
4877 * ought to correspond to an inability to carry out its duties.
4878 */
4879 if (SCT_LIST_validate(scts, ctx) < 0) {
f63a17d6
MC		 4880 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4881 SSL_R_SCT_VERIFICATION_FAILED);
ed29e82a
RP		 4882 goto end;
4883 }
4884
4885 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4886 if (ret < 0)
a230b26e 4887 ret = 0; /* This function returns 0 on failure */
f63a17d6
MC		 4888 if (!ret)
4889 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4890 SSL_R_CALLBACK_FAILED);
ed29e82a 4891
a230b26e 4892 end:
ed29e82a 4893 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 4894 /*
4895 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4896 * failure return code here. Also the application may wish the complete
4897 * the handshake, and then disconnect cleanly at a higher layer, after
4898 * checking the verification status of the completed connection.
4899 *
4900 * We therefore force a certificate verification failure which will be
4901 * visible via SSL_get_verify_result() and cached as part of any resumed
4902 * session.
4903 *
4904 * Note: the permissive callback is for information gathering only, always
4905 * returns success, and does not affect verification status. Only the
4906 * strict callback or a custom application-specified callback can trigger
4907 * connection failure or record a verification error.
4908 */
4909 if (ret <= 0)
4910 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 4911 return ret;
4912}
4913
43341433
VD		 4914int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4915{
4916 switch (validation_mode) {
4917 default:
4918 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4919 return 0;
4920 case SSL_CT_VALIDATION_PERMISSIVE:
4921 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4922 case SSL_CT_VALIDATION_STRICT:
4923 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4924 }
4925}
4926
4927int SSL_enable_ct(SSL *s, int validation_mode)
4928{
4929 switch (validation_mode) {
4930 default:
4931 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4932 return 0;
4933 case SSL_CT_VALIDATION_PERMISSIVE:
4934 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4935 case SSL_CT_VALIDATION_STRICT:
4936 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4937 }
4938}
4939
ed29e82a
RP		 4940int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4941{
328f36c5 4942 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 4943}
4944
4945int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4946{
4947 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4948}
4949
a230b26e 4950void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 4951{
4952 CTLOG_STORE_free(ctx->ctlog_store);
4953 ctx->ctlog_store = logs;
4954}
4955
4956const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4957{
4958 return ctx->ctlog_store;
4959}
4960
6b1bb98f
BK		 4961#endif /* OPENSSL_NO_CT */
4962
a9c0d8be
DB		 4963void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4964 void *arg)
6b1bb98f 4965{
a9c0d8be
DB		 4966 c->client_hello_cb = cb;
4967 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 4968}
4969
a9c0d8be 4970int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 4971{
4972 if (s->clienthello == NULL)
4973 return 0;
4974 return s->clienthello->isv2;
4975}
4976
a9c0d8be 4977unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 4978{
4979 if (s->clienthello == NULL)
4980 return 0;
4981 return s->clienthello->legacy_version;
4982}
4983
a9c0d8be 4984size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4985{
4986 if (s->clienthello == NULL)
4987 return 0;
4988 if (out != NULL)
4989 *out = s->clienthello->random;
4990 return SSL3_RANDOM_SIZE;
4991}
4992
a9c0d8be 4993size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4994{
4995 if (s->clienthello == NULL)
4996 return 0;
4997 if (out != NULL)
4998 *out = s->clienthello->session_id;
4999 return s->clienthello->session_id_len;
5000}
5001
a9c0d8be 5002size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5003{
5004 if (s->clienthello == NULL)
5005 return 0;
5006 if (out != NULL)
5007 *out = PACKET_data(&s->clienthello->ciphersuites);
5008 return PACKET_remaining(&s->clienthello->ciphersuites);
5009}
5010
a9c0d8be 5011size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 5012{
5013 if (s->clienthello == NULL)
5014 return 0;
5015 if (out != NULL)
5016 *out = s->clienthello->compressions;
5017 return s->clienthello->compressions_len;
5018}
5019
a9c0d8be 5020int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 5021{
5022 RAW_EXTENSION *ext;
5023 int *present;
5024 size_t num = 0, i;
5025
5026 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5027 return 0;
5028 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5029 ext = s->clienthello->pre_proc_exts + i;
5030 if (ext->present)
5031 num++;
5032 }
cdb10bae
RS		 5033 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5034 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5035 ERR_R_MALLOC_FAILURE);
193b5d76 5036 return 0;
cdb10bae 5037 }
193b5d76
BK		 5038 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5039 ext = s->clienthello->pre_proc_exts + i;
5040 if (ext->present) {
5041 if (ext->received_order >= num)
5042 goto err;
5043 present[ext->received_order] = ext->type;
5044 }
5045 }
5046 *out = present;
5047 *outlen = num;
5048 return 1;
5049 err:
5050 OPENSSL_free(present);
5051 return 0;
5052}
5053
a9c0d8be 5054int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 5055 size_t *outlen)
5056{
5057 size_t i;
5058 RAW_EXTENSION *r;
5059
5060 if (s->clienthello == NULL)
5061 return 0;
5062 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5063 r = s->clienthello->pre_proc_exts + i;
5064 if (r->present && r->type == type) {
5065 if (out != NULL)
5066 *out = PACKET_data(&r->data);
5067 if (outlen != NULL)
5068 *outlen = PACKET_remaining(&r->data);
5069 return 1;
5070 }
5071 }
5072 return 0;
5073}
2faa1b48 5074
a58eb06d
TS		 5075int SSL_free_buffers(SSL *ssl)
5076{
5077 RECORD_LAYER *rl = &ssl->rlayer;
5078
5079 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5080 return 0;
5081
5082 RECORD_LAYER_release(rl);
5083 return 1;
5084}
5085
5086int SSL_alloc_buffers(SSL *ssl)
5087{
5088 return ssl3_setup_buffers(ssl);
5089}
5090
2faa1b48
CB		 5091void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5092{
5093 ctx->keylog_callback = cb;
5094}
5095
5096SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5097{
5098 return ctx->keylog_callback;
5099}
5100
5101static int nss_keylog_int(const char *prefix,
5102 SSL *ssl,
5103 const uint8_t *parameter_1,
5104 size_t parameter_1_len,
5105 const uint8_t *parameter_2,
5106 size_t parameter_2_len)
5107{
5108 char *out = NULL;
5109 char *cursor = NULL;
5110 size_t out_len = 0;
5111 size_t i;
5112 size_t prefix_len;
5113
5114 if (ssl->ctx->keylog_callback == NULL) return 1;
5115
5116 /*
5117 * Our output buffer will contain the following strings, rendered with
5118 * space characters in between, terminated by a NULL character: first the
5119 * prefix, then the first parameter, then the second parameter. The
5120 * meaning of each parameter depends on the specific key material being
5121 * logged. Note that the first and second parameters are encoded in
5122 * hexadecimal, so we need a buffer that is twice their lengths.
5123 */
5124 prefix_len = strlen(prefix);
5125 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
5126 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
f63a17d6
MC		 5127 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5128 ERR_R_MALLOC_FAILURE);
2faa1b48
CB		 5129 return 0;
5130 }
5131
5132 strcpy(cursor, prefix);
5133 cursor += prefix_len;
5134 *cursor++ = ' ';
5135
5136 for (i = 0; i < parameter_1_len; i++) {
5137 sprintf(cursor, "%02x", parameter_1[i]);
5138 cursor += 2;
5139 }
5140 *cursor++ = ' ';
5141
5142 for (i = 0; i < parameter_2_len; i++) {
5143 sprintf(cursor, "%02x", parameter_2[i]);
5144 cursor += 2;
5145 }
5146 *cursor = '\0';
5147
5148 ssl->ctx->keylog_callback(ssl, (const char *)out);
5149 OPENSSL_free(out);
5150 return 1;
5151
5152}
5153
5154int ssl_log_rsa_client_key_exchange(SSL *ssl,
5155 const uint8_t *encrypted_premaster,
5156 size_t encrypted_premaster_len,
5157 const uint8_t *premaster,
5158 size_t premaster_len)
5159{
5160 if (encrypted_premaster_len < 8) {
f63a17d6
MC		 5161 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5162 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
2faa1b48
CB		 5163 return 0;
5164 }
5165
f0deb4d3 5166 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 5167 return nss_keylog_int("RSA",
5168 ssl,
5169 encrypted_premaster,
f0deb4d3 5170 8,
2faa1b48
CB		 5171 premaster,
5172 premaster_len);
5173}
5174
2c7bd692
CB		 5175int ssl_log_secret(SSL *ssl,
5176 const char *label,
5177 const uint8_t *secret,
5178 size_t secret_len)
2faa1b48 5179{
2c7bd692 5180 return nss_keylog_int(label,
2faa1b48 5181 ssl,
2c7bd692
CB		 5182 ssl->s3->client_random,
5183 SSL3_RANDOM_SIZE,
5184 secret,
5185 secret_len);
2faa1b48
CB		 5186}
5187
ccb8e6e0
BK		 5188#define SSLV2_CIPHER_LEN 3
5189
f63a17d6 5190int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
ccb8e6e0 5191{
ccb8e6e0 5192 int n;
ccb8e6e0
BK		 5193
5194 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5195
5196 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5197 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5198 SSL_R_NO_CIPHERS_SPECIFIED);
90134d98 5199 return 0;
ccb8e6e0
BK		 5200 }
5201
5202 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6 5203 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
dd5a4279 5204 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98 5205 return 0;
ccb8e6e0
BK		 5206 }
5207
5208 OPENSSL_free(s->s3->tmp.ciphers_raw);
5209 s->s3->tmp.ciphers_raw = NULL;
5210 s->s3->tmp.ciphers_rawlen = 0;
5211
5212 if (sslv2format) {
5213 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5214 PACKET sslv2ciphers = *cipher_suites;
5215 unsigned int leadbyte;
5216 unsigned char *raw;
5217
5218 /*
5219 * We store the raw ciphers list in SSLv3+ format so we need to do some
5220 * preprocessing to convert the list first. If there are any SSLv2 only
5221 * ciphersuites with a non-zero leading byte then we are going to
5222 * slightly over allocate because we won't store those. But that isn't a
5223 * problem.
5224 */
5225 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5226 s->s3->tmp.ciphers_raw = raw;
5227 if (raw == NULL) {
f63a17d6
MC		 5228 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5229 ERR_R_MALLOC_FAILURE);
5230 return 0;
ccb8e6e0
BK		 5231 }
5232 for (s->s3->tmp.ciphers_rawlen = 0;
5233 PACKET_remaining(&sslv2ciphers) > 0;
5234 raw += TLS_CIPHER_LEN) {
5235 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5236 || (leadbyte == 0
5237 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5238 TLS_CIPHER_LEN))
5239 || (leadbyte != 0
5240 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
f63a17d6
MC		 5241 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5242 SSL_R_BAD_PACKET);
ccb8e6e0
BK		 5243 OPENSSL_free(s->s3->tmp.ciphers_raw);
5244 s->s3->tmp.ciphers_raw = NULL;
5245 s->s3->tmp.ciphers_rawlen = 0;
f63a17d6 5246 return 0;
ccb8e6e0
BK		 5247 }
5248 if (leadbyte == 0)
5249 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5250 }
5251 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5252 &s->s3->tmp.ciphers_rawlen)) {
f63a17d6
MC		 5253 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5254 ERR_R_INTERNAL_ERROR);
5255 return 0;
ccb8e6e0 5256 }
90134d98 5257 return 1;
90134d98
BK		 5258}
5259
5260int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5261 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5262 STACK_OF(SSL_CIPHER) **scsvs)
5263{
90134d98
BK		 5264 PACKET pkt;
5265
5266 if (!PACKET_buf_init(&pkt, bytes, len))
5267 return 0;
f63a17d6 5268 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
90134d98
BK		 5269}
5270
5271int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5272 STACK_OF(SSL_CIPHER) **skp,
5273 STACK_OF(SSL_CIPHER) **scsvs_out,
f63a17d6 5274 int sslv2format, int fatal)
90134d98
BK		 5275{
5276 const SSL_CIPHER *c;
5277 STACK_OF(SSL_CIPHER) *sk = NULL;
5278 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5279 int n;
5280 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5281 unsigned char cipher[SSLV2_CIPHER_LEN];
5282
5283 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5284
5285 if (PACKET_remaining(cipher_suites) == 0) {
f63a17d6
MC		 5286 if (fatal)
5287 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5288 SSL_R_NO_CIPHERS_SPECIFIED);
5289 else
5290 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
90134d98
BK		 5291 return 0;
5292 }
5293
5294 if (PACKET_remaining(cipher_suites) % n != 0) {
f63a17d6
MC		 5295 if (fatal)
5296 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5297 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5298 else
5299 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5300 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
90134d98
BK		 5301 return 0;
5302 }
5303
5304 sk = sk_SSL_CIPHER_new_null();
5305 scsvs = sk_SSL_CIPHER_new_null();
5306 if (sk == NULL || scsvs == NULL) {
f63a17d6
MC		 5307 if (fatal)
5308 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5309 ERR_R_MALLOC_FAILURE);
5310 else
5311 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
90134d98
BK		 5312 goto err;
5313 }
ccb8e6e0
BK		 5314
5315 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5316 /*
5317 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5318 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5319 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5320 */
5321 if (sslv2format && cipher[0] != '\0')
5322 continue;
5323
ccb8e6e0
BK		 5324 /* For SSLv2-compat, ignore leading 0-byte. */
5325 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5326 if (c != NULL) {
90134d98
BK		 5327 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5328 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
f63a17d6
MC		 5329 if (fatal)
5330 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5331 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5332 else
5333 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
ccb8e6e0
BK		 5334 goto err;
5335 }
5336 }
5337 }
5338 if (PACKET_remaining(cipher_suites) > 0) {
f63a17d6
MC		 5339 if (fatal)
5340 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5341 SSL_R_BAD_LENGTH);
5342 else
5343 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5344 goto err;
5345 }
5346
90134d98
BK		 5347 if (skp != NULL)
5348 *skp = sk;
5349 else
5350 sk_SSL_CIPHER_free(sk);
5351 if (scsvs_out != NULL)
5352 *scsvs_out = scsvs;
5353 else
5354 sk_SSL_CIPHER_free(scsvs);
5355 return 1;
ccb8e6e0
BK		 5356 err:
5357 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5358 sk_SSL_CIPHER_free(scsvs);
5359 return 0;
ccb8e6e0 5360}
3fc8d856
MC		 5361
5362int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5363{
5364 ctx->max_early_data = max_early_data;
5365
5366 return 1;
5367}
5368
46dcb945 5369uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5370{
5371 return ctx->max_early_data;
5372}
5373
5374int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5375{
5376 s->max_early_data = max_early_data;
5377
5378 return 1;
5379}
5380
a8e75d56 5381uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5382{
5383 return s->max_early_data;
5384}
ae3947de 5385
4e8548e8
MC		 5386int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5387{
5388 ctx->recv_max_early_data = recv_max_early_data;
5389
5390 return 1;
5391}
5392
5393uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5394{
5395 return ctx->recv_max_early_data;
5396}
5397
5398int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5399{
5400 s->recv_max_early_data = recv_max_early_data;
5401
5402 return 1;
5403}
5404
5405uint32_t SSL_get_recv_max_early_data(const SSL *s)
5406{
5407 return s->recv_max_early_data;
5408}
5409
cf72c757
F		 5410__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5411{
5412 /* Return any active Max Fragment Len extension */
5413 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5414 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5415
5416 /* return current SSL connection setting */
5417 return ssl->max_send_fragment;
5418}
5419
5420__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5421{
5422 /* Return a value regarding an active Max Fragment Len extension */
5423 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5424 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5425 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5426
5427 /* else limit |split_send_fragment| to current |max_send_fragment| */
5428 if (ssl->split_send_fragment > ssl->max_send_fragment)
5429 return ssl->max_send_fragment;
5430
5431 /* return current SSL connection setting */
5432 return ssl->split_send_fragment;
5433}
042c5753
MC		 5434
5435int SSL_stateless(SSL *s)
5436{
5437 int ret;
5438
5439 /* Ensure there is no state left over from a previous invocation */
5440 if (!SSL_clear(s))
d6bb50a5 5441 return 0;
042c5753
MC		 5442
5443 ERR_clear_error();
5444
5445 s->s3->flags |= TLS1_FLAGS_STATELESS;
5446 ret = SSL_accept(s);
5447 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5448
d6bb50a5 5449 if (ret > 0 && s->ext.cookieok)
c36001c3
MC		 5450 return 1;
5451
e440f513
MC		 5452 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5453 return 0;
5454
5455 return -1;
042c5753 5456}
9d75dce3
TS		 5457
5458void SSL_force_post_handshake_auth(SSL *ssl)
5459{
5460 ssl->pha_forced = 1;
5461}
5462
5463int SSL_verify_client_post_handshake(SSL *ssl)
5464{
5465 if (!SSL_IS_TLS13(ssl)) {
5466 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5467 return 0;
5468 }
5469 if (!ssl->server) {
5470 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5471 return 0;
5472 }
5473
5474 if (!SSL_is_init_finished(ssl)) {
5475 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5476 return 0;
5477 }
5478
5479 switch (ssl->post_handshake_auth) {
5480 case SSL_PHA_NONE:
5481 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5482 return 0;
5483 default:
5484 case SSL_PHA_EXT_SENT:
5485 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5486 return 0;
5487 case SSL_PHA_EXT_RECEIVED:
5488 break;
5489 case SSL_PHA_REQUEST_PENDING:
5490 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5491 return 0;
5492 case SSL_PHA_REQUESTED:
5493 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5494 return 0;
5495 }
5496
5497 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5498
5499 /* checks verify_mode and algorithm_auth */
5500 if (!send_certificate_request(ssl)) {
5501 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5502 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5503 return 0;
5504 }
5505
5506 ossl_statem_set_in_init(ssl, 1);
5507 return 1;
5508}
df0fed9a
TS		 5509
5510int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5511 SSL_CTX_generate_session_ticket_fn gen_cb,
5512 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5513 void *arg)
5514{
5515 ctx->generate_ticket_cb = gen_cb;
5516 ctx->decrypt_ticket_cb = dec_cb;
5517 ctx->ticket_cb_data = arg;
5518 return 1;
5519}
c9598459
MC		 5520
5521void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5522 SSL_allow_early_data_cb_fn cb,
5523 void *arg)
5524{
5525 ctx->allow_early_data_cb = cb;
5526 ctx->allow_early_data_cb_data = arg;
5527}
5528
5529void SSL_set_allow_early_data_cb(SSL *s,
5530 SSL_allow_early_data_cb_fn cb,
5531 void *arg)
5532{
5533 s->allow_early_data_cb = cb;
5534 s->allow_early_data_cb_data = arg;
5535}
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