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aes/asm/{aes-armv4|bsaes-armv7}.pl: make it work with binutils-2.29.
[thirdparty/openssl.git] / ssl / ssl_lib.c
CommitLineData
0f113f3e 1/*
677963e5 2 * Copyright 1995-2017 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>
67c8e7f4 17#include <openssl/ocsp.h>
3c27208f
RS		 18#include <openssl/dh.h>
19#include <openssl/engine.h>
07bbc92c 20#include <openssl/async.h>
3c27208f 21#include <openssl/ct.h>
67dc995e 22#include "internal/cryptlib.h"
ae3947de 23#include "internal/rand.h"
cd420b0b 24#include "internal/refcount.h"
0f113f3e 25
df2ee0e2 26const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
0f113f3e
MC		 27
28SSL3_ENC_METHOD ssl3_undef_enc_method = {
29 /*
30 * evil casts, but these functions are only called if there's a library
31 * bug
32 */
72716e79 33 (int (*)(SSL *, SSL3_RECORD *, size_t, int))ssl_undefined_function,
d102d9df 34 (int (*)(SSL *, SSL3_RECORD *, unsigned char *, int))ssl_undefined_function,
0f113f3e 35 ssl_undefined_function,
8c1a5343 36 (int (*)(SSL *, unsigned char *, unsigned char *, size_t, size_t *))
0f113f3e
MC		 37 ssl_undefined_function,
38 (int (*)(SSL *, int))ssl_undefined_function,
6db6bc5a 39 (size_t (*)(SSL *, const char *, size_t, unsigned char *))
0f113f3e 40 ssl_undefined_function,
0f113f3e
MC		 41 NULL, /* client_finished_label */
42 0, /* client_finished_label_len */
43 NULL, /* server_finished_label */
44 0, /* server_finished_label_len */
45 (int (*)(int))ssl_undefined_function,
46 (int (*)(SSL *, unsigned char *, size_t, const char *,
47 size_t, const unsigned char *, size_t,
48 int use_context))ssl_undefined_function,
49};
d02b48c6 50
07bbc92c
MC		 51struct ssl_async_args {
52 SSL *s;
53 void *buf;
348240c6 54 size_t num;
a230b26e 55 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
add2f5ca 56 union {
eda75751 57 int (*func_read) (SSL *, void *, size_t, size_t *);
7ee8627f 58 int (*func_write) (SSL *, const void *, size_t, size_t *);
a230b26e 59 int (*func_other) (SSL *);
add2f5ca 60 } f;
07bbc92c
MC		 61};
62
919ba009
VD		 63static const struct {
64 uint8_t mtype;
65 uint8_t ord;
a230b26e 66 int nid;
919ba009 67} dane_mds[] = {
a230b26e
EK		 68 {
69 DANETLS_MATCHING_FULL, 0, NID_undef
70 },
71 {
72 DANETLS_MATCHING_2256, 1, NID_sha256
73 },
74 {
75 DANETLS_MATCHING_2512, 2, NID_sha512
76 },
919ba009
VD		 77};
78
79static int dane_ctx_enable(struct dane_ctx_st *dctx)
80{
81 const EVP_MD **mdevp;
82 uint8_t *mdord;
83 uint8_t mdmax = DANETLS_MATCHING_LAST;
a230b26e 84 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
919ba009
VD		 85 size_t i;
86
5ae4ceb9
VD		 87 if (dctx->mdevp != NULL)
88 return 1;
89
919ba009
VD		 90 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
91 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
92
93 if (mdord == NULL || mdevp == NULL) {
b3bd3d5a 94 OPENSSL_free(mdord);
919ba009
VD		 95 OPENSSL_free(mdevp);
96 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
97 return 0;
98 }
99
100 /* Install default entries */
101 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
102 const EVP_MD *md;
103
104 if (dane_mds[i].nid == NID_undef ||
105 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
106 continue;
107 mdevp[dane_mds[i].mtype] = md;
108 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
109 }
110
111 dctx->mdevp = mdevp;
112 dctx->mdord = mdord;
113 dctx->mdmax = mdmax;
114
115 return 1;
116}
117
118static void dane_ctx_final(struct dane_ctx_st *dctx)
119{
120 OPENSSL_free(dctx->mdevp);
121 dctx->mdevp = NULL;
122
123 OPENSSL_free(dctx->mdord);
124 dctx->mdord = NULL;
125 dctx->mdmax = 0;
126}
127
128static void tlsa_free(danetls_record *t)
129{
130 if (t == NULL)
131 return;
132 OPENSSL_free(t->data);
133 EVP_PKEY_free(t->spki);
134 OPENSSL_free(t);
135}
136
b9aec69a 137static void dane_final(SSL_DANE *dane)
919ba009
VD		 138{
139 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
140 dane->trecs = NULL;
141
142 sk_X509_pop_free(dane->certs, X509_free);
143 dane->certs = NULL;
144
145 X509_free(dane->mcert);
146 dane->mcert = NULL;
147 dane->mtlsa = NULL;
148 dane->mdpth = -1;
149 dane->pdpth = -1;
150}
151
152/*
153 * dane_copy - Copy dane configuration, sans verification state.
154 */
155static int ssl_dane_dup(SSL *to, SSL *from)
156{
157 int num;
158 int i;
159
160 if (!DANETLS_ENABLED(&from->dane))
161 return 1;
162
e431363f 163 num = sk_danetls_record_num(from->dane.trecs);
919ba009 164 dane_final(&to->dane);
5ae4ceb9 165 to->dane.flags = from->dane.flags;
9f6b22b8 166 to->dane.dctx = &to->ctx->dane;
7a908204 167 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
9f6b22b8
VD		 168
169 if (to->dane.trecs == NULL) {
170 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
171 return 0;
172 }
919ba009 173
919ba009
VD		 174 for (i = 0; i < num; ++i) {
175 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
9f6b22b8 176
919ba009
VD		 177 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
178 t->data, t->dlen) <= 0)
179 return 0;
180 }
181 return 1;
182}
183
a230b26e
EK		 184static int dane_mtype_set(struct dane_ctx_st *dctx,
185 const EVP_MD *md, uint8_t mtype, uint8_t ord)
919ba009
VD		 186{
187 int i;
188
189 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
a230b26e 190 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
919ba009
VD		 191 return 0;
192 }
193
194 if (mtype > dctx->mdmax) {
195 const EVP_MD **mdevp;
196 uint8_t *mdord;
a230b26e 197 int n = ((int)mtype) + 1;
919ba009
VD		 198
199 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
200 if (mdevp == NULL) {
201 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
202 return -1;
203 }
204 dctx->mdevp = mdevp;
205
206 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
207 if (mdord == NULL) {
208 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
209 return -1;
210 }
211 dctx->mdord = mdord;
212
213 /* Zero-fill any gaps */
a230b26e 214 for (i = dctx->mdmax + 1; i < mtype; ++i) {
919ba009
VD		 215 mdevp[i] = NULL;
216 mdord[i] = 0;
217 }
218
219 dctx->mdmax = mtype;
220 }
221
222 dctx->mdevp[mtype] = md;
223 /* Coerce ordinal of disabled matching types to 0 */
224 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
225
226 return 1;
227}
228
b9aec69a 229static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
919ba009
VD		 230{
231 if (mtype > dane->dctx->mdmax)
232 return NULL;
233 return dane->dctx->mdevp[mtype];
234}
235
a230b26e
EK		 236static int dane_tlsa_add(SSL_DANE *dane,
237 uint8_t usage,
238 uint8_t selector,
239 uint8_t mtype, unsigned char *data, size_t dlen)
919ba009
VD		 240{
241 danetls_record *t;
242 const EVP_MD *md = NULL;
243 int ilen = (int)dlen;
244 int i;
9f6b22b8 245 int num;
919ba009
VD		 246
247 if (dane->trecs == NULL) {
248 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
249 return -1;
250 }
251
252 if (ilen < 0 || dlen != (size_t)ilen) {
253 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
254 return 0;
255 }
256
257 if (usage > DANETLS_USAGE_LAST) {
258 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
259 return 0;
260 }
261
262 if (selector > DANETLS_SELECTOR_LAST) {
263 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
264 return 0;
265 }
266
267 if (mtype != DANETLS_MATCHING_FULL) {
268 md = tlsa_md_get(dane, mtype);
269 if (md == NULL) {
270 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
271 return 0;
272 }
273 }
274
275 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
276 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
277 return 0;
278 }
279 if (!data) {
280 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
281 return 0;
282 }
283
284 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
285 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
286 return -1;
287 }
288
289 t->usage = usage;
290 t->selector = selector;
291 t->mtype = mtype;
348240c6 292 t->data = OPENSSL_malloc(dlen);
919ba009
VD		 293 if (t->data == NULL) {
294 tlsa_free(t);
295 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
296 return -1;
297 }
348240c6
MC		 298 memcpy(t->data, data, dlen);
299 t->dlen = dlen;
919ba009
VD		 300
301 /* Validate and cache full certificate or public key */
302 if (mtype == DANETLS_MATCHING_FULL) {
303 const unsigned char *p = data;
304 X509 *cert = NULL;
305 EVP_PKEY *pkey = NULL;
306
307 switch (selector) {
308 case DANETLS_SELECTOR_CERT:
348240c6 309 if (!d2i_X509(&cert, &p, ilen) || p < data ||
919ba009
VD		 310 dlen != (size_t)(p - data)) {
311 tlsa_free(t);
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
313 return 0;
314 }
315 if (X509_get0_pubkey(cert) == NULL) {
316 tlsa_free(t);
317 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
318 return 0;
319 }
320
321 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
322 X509_free(cert);
323 break;
324 }
325
326 /*
327 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
328 * records that contain full certificates of trust-anchors that are
329 * not present in the wire chain. For usage PKIX-TA(0), we augment
330 * the chain with untrusted Full(0) certificates from DNS, in case
331 * they are missing from the chain.
332 */
333 if ((dane->certs == NULL &&
334 (dane->certs = sk_X509_new_null()) == NULL) ||
335 !sk_X509_push(dane->certs, cert)) {
336 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
337 X509_free(cert);
338 tlsa_free(t);
339 return -1;
340 }
341 break;
342
343 case DANETLS_SELECTOR_SPKI:
348240c6 344 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
919ba009
VD		 345 dlen != (size_t)(p - data)) {
346 tlsa_free(t);
347 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
348 return 0;
349 }
350
351 /*
352 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
353 * records that contain full bare keys of trust-anchors that are
354 * not present in the wire chain.
355 */
356 if (usage == DANETLS_USAGE_DANE_TA)
357 t->spki = pkey;
358 else
359 EVP_PKEY_free(pkey);
360 break;
361 }
362 }
363
364 /*-
365 * Find the right insertion point for the new record.
366 *
367 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
368 * they can be processed first, as they require no chain building, and no
369 * expiration or hostname checks. Because DANE-EE(3) is numerically
370 * largest, this is accomplished via descending sort by "usage".
371 *
372 * We also sort in descending order by matching ordinal to simplify
373 * the implementation of digest agility in the verification code.
374 *
375 * The choice of order for the selector is not significant, so we
376 * use the same descending order for consistency.
377 */
9f6b22b8
VD		 378 num = sk_danetls_record_num(dane->trecs);
379 for (i = 0; i < num; ++i) {
919ba009 380 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
9f6b22b8 381
919ba009
VD		 382 if (rec->usage > usage)
383 continue;
384 if (rec->usage < usage)
385 break;
386 if (rec->selector > selector)
387 continue;
388 if (rec->selector < selector)
389 break;
390 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
391 continue;
392 break;
393 }
394
395 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
396 tlsa_free(t);
397 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
398 return -1;
399 }
400 dane->umask |= DANETLS_USAGE_BIT(usage);
401
402 return 1;
403}
404
c8feba72
BK		 405/*
406 * Return 0 if there is only one version configured and it was disabled
407 * at configure time. Return 1 otherwise.
408 */
409static int ssl_check_allowed_versions(int min_version, int max_version)
410{
411 int minisdtls = 0, maxisdtls = 0;
412
413 /* Figure out if we're doing DTLS versions or TLS versions */
414 if (min_version == DTLS1_BAD_VER
415 || min_version >> 8 == DTLS1_VERSION_MAJOR)
416 minisdtls = 1;
417 if (max_version == DTLS1_BAD_VER
418 || max_version >> 8 == DTLS1_VERSION_MAJOR)
419 maxisdtls = 1;
420 /* A wildcard version of 0 could be DTLS or TLS. */
421 if ((minisdtls && !maxisdtls && max_version != 0)
422 || (maxisdtls && !minisdtls && min_version != 0)) {
423 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
424 return 0;
425 }
426
427 if (minisdtls || maxisdtls) {
428 /* Do DTLS version checks. */
429 if (min_version == 0)
430 /* Ignore DTLS1_BAD_VER */
431 min_version = DTLS1_VERSION;
432 if (max_version == 0)
433 max_version = DTLS1_2_VERSION;
434#ifdef OPENSSL_NO_DTLS1_2
435 if (max_version == DTLS1_2_VERSION)
436 max_version = DTLS1_VERSION;
437#endif
438#ifdef OPENSSL_NO_DTLS1
439 if (min_version == DTLS1_VERSION)
440 min_version = DTLS1_2_VERSION;
441#endif
79b4444d
DMSP		 442 /* Done massaging versions; do the check. */
443 if (0
c8feba72
BK		 444#ifdef OPENSSL_NO_DTLS1
445 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
446 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
447#endif
448#ifdef OPENSSL_NO_DTLS1_2
449 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
450 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
451#endif
452 )
453 return 0;
454 } else {
455 /* Regular TLS version checks. */
79b4444d
DMSP		 456 if (min_version == 0)
457 min_version = SSL3_VERSION;
458 if (max_version == 0)
459 max_version = TLS1_3_VERSION;
c8feba72 460#ifdef OPENSSL_NO_TLS1_3
79b4444d
DMSP		 461 if (max_version == TLS1_3_VERSION)
462 max_version = TLS1_2_VERSION;
c8feba72
BK		 463#endif
464#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 465 if (max_version == TLS1_2_VERSION)
466 max_version = TLS1_1_VERSION;
c8feba72
BK		 467#endif
468#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 469 if (max_version == TLS1_1_VERSION)
470 max_version = TLS1_VERSION;
c8feba72
BK		 471#endif
472#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 473 if (max_version == TLS1_VERSION)
474 max_version = SSL3_VERSION;
c8feba72
BK		 475#endif
476#ifdef OPENSSL_NO_SSL3
79b4444d
DMSP		 477 if (min_version == SSL3_VERSION)
478 min_version = TLS1_VERSION;
c8feba72
BK		 479#endif
480#ifdef OPENSSL_NO_TLS1
79b4444d
DMSP		 481 if (min_version == TLS1_VERSION)
482 min_version = TLS1_1_VERSION;
c8feba72
BK		 483#endif
484#ifdef OPENSSL_NO_TLS1_1
79b4444d
DMSP		 485 if (min_version == TLS1_1_VERSION)
486 min_version = TLS1_2_VERSION;
c8feba72
BK		 487#endif
488#ifdef OPENSSL_NO_TLS1_2
79b4444d
DMSP		 489 if (min_version == TLS1_2_VERSION)
490 min_version = TLS1_3_VERSION;
c8feba72 491#endif
79b4444d
DMSP		 492 /* Done massaging versions; do the check. */
493 if (0
c8feba72
BK		 494#ifdef OPENSSL_NO_SSL3
495 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
496#endif
497#ifdef OPENSSL_NO_TLS1
498 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
499#endif
500#ifdef OPENSSL_NO_TLS1_1
501 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
502#endif
503#ifdef OPENSSL_NO_TLS1_2
504 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
505#endif
506#ifdef OPENSSL_NO_TLS1_3
507 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
508#endif
509 )
510 return 0;
511 }
512 return 1;
513}
514
d31fb0b5
RS		 515static void clear_ciphers(SSL *s)
516{
517 /* clear the current cipher */
518 ssl_clear_cipher_ctx(s);
519 ssl_clear_hash_ctx(&s->read_hash);
520 ssl_clear_hash_ctx(&s->write_hash);
521}
522
4f43d0e7 523int SSL_clear(SSL *s)
0f113f3e 524{
0f113f3e
MC		 525 if (s->method == NULL) {
526 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
a89325e4 527 return 0;
0f113f3e 528 }
d02b48c6 529
0f113f3e
MC		 530 if (ssl_clear_bad_session(s)) {
531 SSL_SESSION_free(s->session);
532 s->session = NULL;
533 }
9368f865
MC		 534 SSL_SESSION_free(s->psksession);
535 s->psksession = NULL;
add8d0e9
MC		 536 OPENSSL_free(s->psksession_id);
537 s->psksession_id = NULL;
538 s->psksession_id_len = 0;
d62bfb39 539
0f113f3e
MC		 540 s->error = 0;
541 s->hit = 0;
542 s->shutdown = 0;
d02b48c6 543
0f113f3e
MC		 544 if (s->renegotiate) {
545 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
546 return 0;
547 }
d02b48c6 548
fe3a3291 549 ossl_statem_clear(s);
413c4f45 550
0f113f3e
MC		 551 s->version = s->method->version;
552 s->client_version = s->version;
553 s->rwstate = SSL_NOTHING;
d02b48c6 554
25aaa98a
RS		 555 BUF_MEM_free(s->init_buf);
556 s->init_buf = NULL;
d31fb0b5 557 clear_ciphers(s);
0f113f3e 558 s->first_packet = 0;
d02b48c6 559
44c04a2e
MC		 560 s->key_update = SSL_KEY_UPDATE_NONE;
561
919ba009
VD		 562 /* Reset DANE verification result state */
563 s->dane.mdpth = -1;
564 s->dane.pdpth = -1;
565 X509_free(s->dane.mcert);
566 s->dane.mcert = NULL;
567 s->dane.mtlsa = NULL;
568
569 /* Clear the verification result peername */
570 X509_VERIFY_PARAM_move_peername(s->param, NULL);
571
0f113f3e
MC		 572 /*
573 * Check to see if we were changed into a different method, if so, revert
24252537 574 * back.
0f113f3e 575 */
24252537 576 if (s->method != s->ctx->method) {
0f113f3e
MC		 577 s->method->ssl_free(s);
578 s->method = s->ctx->method;
579 if (!s->method->ssl_new(s))
a89325e4 580 return 0;
b77f3ed1
MC		 581 } else {
582 if (!s->method->ssl_clear(s))
583 return 0;
584 }
33d23b87 585
af9752e5 586 RECORD_LAYER_clear(&s->rlayer);
33d23b87 587
a89325e4 588 return 1;
0f113f3e 589}
d02b48c6 590
4f43d0e7 591/** Used to change an SSL_CTXs default SSL method type */
0f113f3e
MC		 592int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
593{
594 STACK_OF(SSL_CIPHER) *sk;
595
596 ctx->method = meth;
597
598 sk = ssl_create_cipher_list(ctx->method, &(ctx->cipher_list),
599 &(ctx->cipher_list_by_id),
600 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
601 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
a230b26e 602 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
26a7d938 603 return 0;
0f113f3e 604 }
208fb891 605 return 1;
0f113f3e 606}
d02b48c6 607
4f43d0e7 608SSL *SSL_new(SSL_CTX *ctx)
0f113f3e
MC		 609{
610 SSL *s;
611
612 if (ctx == NULL) {
613 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
26a7d938 614 return NULL;
0f113f3e
MC		 615 }
616 if (ctx->method == NULL) {
617 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
26a7d938 618 return NULL;
0f113f3e
MC		 619 }
620
b51bce94 621 s = OPENSSL_zalloc(sizeof(*s));
0f113f3e
MC		 622 if (s == NULL)
623 goto err;
0f113f3e 624
e6b10c34 625 s->references = 1;
16203f7b 626 s->lock = CRYPTO_THREAD_lock_new();
e6b10c34
BE		 627 if (s->lock == NULL) {
628 OPENSSL_free(s);
629 s = NULL;
ae3947de 630 goto err;
e6b10c34 631 }
ae3947de
RS		 632
633 /*
634 * If not using the standard RAND (say for fuzzing), then don't use a
635 * chained DRBG.
636 */
637 if (RAND_get_rand_method() == RAND_OpenSSL()) {
c16de9d8
DMSP		 638 s->drbg =
639 RAND_DRBG_new(RAND_DRBG_NID, RAND_DRBG_FLAG_CTR_USE_DF,
640 RAND_DRBG_get0_global());
0b14a5b7 641 if (s->drbg == NULL
c16de9d8
DMSP		 642 || RAND_DRBG_instantiate(s->drbg,
643 (const unsigned char *) SSL_version_str,
e6b10c34 644 sizeof(SSL_version_str) - 1) == 0)
ae3947de 645 goto err;
16203f7b
AG		 646 }
647
c036e210 648 RECORD_LAYER_init(&s->rlayer, s);
28d59af8 649
0f113f3e 650 s->options = ctx->options;
5ae4ceb9 651 s->dane.flags = ctx->dane.flags;
7946ab33
KR		 652 s->min_proto_version = ctx->min_proto_version;
653 s->max_proto_version = ctx->max_proto_version;
0f113f3e
MC		 654 s->mode = ctx->mode;
655 s->max_cert_list = ctx->max_cert_list;
3fc8d856 656 s->max_early_data = ctx->max_early_data;
0f113f3e 657
2c382349
KR		 658 /*
659 * Earlier library versions used to copy the pointer to the CERT, not
660 * its contents; only when setting new parameters for the per-SSL
661 * copy, ssl_cert_new would be called (and the direct reference to
662 * the per-SSL_CTX settings would be lost, but those still were
663 * indirectly accessed for various purposes, and for that reason they
664 * used to be known as s->ctx->default_cert). Now we don't look at the
665 * SSL_CTX's CERT after having duplicated it once.
666 */
667 s->cert = ssl_cert_dup(ctx->cert);
668 if (s->cert == NULL)
669 goto err;
0f113f3e 670
52e1d7b1 671 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
0f113f3e
MC		 672 s->msg_callback = ctx->msg_callback;
673 s->msg_callback_arg = ctx->msg_callback_arg;
674 s->verify_mode = ctx->verify_mode;
675 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
c649d10d
TS		 676 s->record_padding_cb = ctx->record_padding_cb;
677 s->record_padding_arg = ctx->record_padding_arg;
678 s->block_padding = ctx->block_padding;
0f113f3e 679 s->sid_ctx_length = ctx->sid_ctx_length;
380a522f
MC		 680 if (!ossl_assert(s->sid_ctx_length <= sizeof s->sid_ctx))
681 goto err;
0f113f3e
MC		 682 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
683 s->verify_callback = ctx->default_verify_callback;
684 s->generate_session_id = ctx->generate_session_id;
685
686 s->param = X509_VERIFY_PARAM_new();
a71edf3b 687 if (s->param == NULL)
0f113f3e
MC		 688 goto err;
689 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
0f113f3e
MC		 690 s->quiet_shutdown = ctx->quiet_shutdown;
691 s->max_send_fragment = ctx->max_send_fragment;
d102d9df
MC		 692 s->split_send_fragment = ctx->split_send_fragment;
693 s->max_pipelines = ctx->max_pipelines;
94777c9c
MC		 694 if (s->max_pipelines > 1)
695 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
dad78fb1
MC		 696 if (ctx->default_read_buf_len > 0)
697 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
bf21446a 698
16203f7b 699 SSL_CTX_up_ref(ctx);
0f113f3e 700 s->ctx = ctx;
aff8c126
RS		 701 s->ext.debug_cb = 0;
702 s->ext.debug_arg = NULL;
703 s->ext.ticket_expected = 0;
704 s->ext.status_type = ctx->ext.status_type;
705 s->ext.status_expected = 0;
706 s->ext.ocsp.ids = NULL;
707 s->ext.ocsp.exts = NULL;
708 s->ext.ocsp.resp = NULL;
709 s->ext.ocsp.resp_len = 0;
16203f7b 710 SSL_CTX_up_ref(ctx);
222da979 711 s->session_ctx = ctx;
a230b26e 712#ifndef OPENSSL_NO_EC
aff8c126
RS		 713 if (ctx->ext.ecpointformats) {
714 s->ext.ecpointformats =
715 OPENSSL_memdup(ctx->ext.ecpointformats,
716 ctx->ext.ecpointformats_len);
717 if (!s->ext.ecpointformats)
0f113f3e 718 goto err;
aff8c126
RS		 719 s->ext.ecpointformats_len =
720 ctx->ext.ecpointformats_len;
721 }
722 if (ctx->ext.supportedgroups) {
723 s->ext.supportedgroups =
724 OPENSSL_memdup(ctx->ext.supportedgroups,
9e84a42d 725 ctx->ext.supportedgroups_len
b92d7b62 726 * sizeof(*ctx->ext.supportedgroups));
aff8c126 727 if (!s->ext.supportedgroups)
0f113f3e 728 goto err;
aff8c126 729 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
0f113f3e 730 }
a230b26e
EK		 731#endif
732#ifndef OPENSSL_NO_NEXTPROTONEG
aff8c126 733 s->ext.npn = NULL;
a230b26e 734#endif
6f017a8f 735
aff8c126
RS		 736 if (s->ctx->ext.alpn) {
737 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
738 if (s->ext.alpn == NULL)
0f113f3e 739 goto err;
aff8c126
RS		 740 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
741 s->ext.alpn_len = s->ctx->ext.alpn_len;
0f113f3e 742 }
d02b48c6 743
696178ed 744 s->verified_chain = NULL;
0f113f3e 745 s->verify_result = X509_V_OK;
d02b48c6 746
a974e64a
MC		 747 s->default_passwd_callback = ctx->default_passwd_callback;
748 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
749
0f113f3e 750 s->method = ctx->method;
d02b48c6 751
44c04a2e
MC		 752 s->key_update = SSL_KEY_UPDATE_NONE;
753
0f113f3e
MC		 754 if (!s->method->ssl_new(s))
755 goto err;
d02b48c6 756
0f113f3e 757 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
bf21446a 758
61986d32 759 if (!SSL_clear(s))
69f68237 760 goto err;
58964a49 761
25a807bc
F		 762 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
763 goto err;
58964a49 764
ddac1974 765#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 766 s->psk_client_callback = ctx->psk_client_callback;
767 s->psk_server_callback = ctx->psk_server_callback;
ddac1974 768#endif
f46184bd
MC		 769 s->psk_find_session_cb = ctx->psk_find_session_cb;
770 s->psk_use_session_cb = ctx->psk_use_session_cb;
ddac1974 771
07bbc92c
MC		 772 s->job = NULL;
773
ed29e82a
RP		 774#ifndef OPENSSL_NO_CT
775 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
a230b26e 776 ctx->ct_validation_callback_arg))
ed29e82a
RP		 777 goto err;
778#endif
779
16203f7b 780 return s;
0f113f3e 781 err:
62adbcee 782 SSL_free(s);
0f113f3e 783 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
16203f7b 784 return NULL;
0f113f3e 785}
d02b48c6 786
e417070c
RS		 787int SSL_is_dtls(const SSL *s)
788{
789 return SSL_IS_DTLS(s) ? 1 : 0;
790}
791
c5ebfcab 792int SSL_up_ref(SSL *s)
a18a31e4 793{
16203f7b 794 int i;
c5ebfcab 795
2f545ae4 796 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
c5ebfcab
F		 797 return 0;
798
799 REF_PRINT_COUNT("SSL", s);
800 REF_ASSERT_ISNT(i < 2);
801 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 802}
803
0f113f3e
MC		 804int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
805 unsigned int sid_ctx_len)
806{
807 if (sid_ctx_len > sizeof ctx->sid_ctx) {
808 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
809 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
810 return 0;
811 }
812 ctx->sid_ctx_length = sid_ctx_len;
813 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
4eb77b26
BM		 814
815 return 1;
0f113f3e 816}
4eb77b26 817
0f113f3e
MC		 818int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
819 unsigned int sid_ctx_len)
820{
821 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
822 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
823 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
824 return 0;
825 }
826 ssl->sid_ctx_length = sid_ctx_len;
827 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
b4cadc6e
BL		 828
829 return 1;
0f113f3e 830}
b4cadc6e 831
dc644fe2 832int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
0f113f3e 833{
16203f7b 834 CRYPTO_THREAD_write_lock(ctx->lock);
0f113f3e 835 ctx->generate_session_id = cb;
16203f7b 836 CRYPTO_THREAD_unlock(ctx->lock);
0f113f3e
MC		 837 return 1;
838}
dc644fe2
GT		 839
840int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
0f113f3e 841{
16203f7b 842 CRYPTO_THREAD_write_lock(ssl->lock);
0f113f3e 843 ssl->generate_session_id = cb;
16203f7b 844 CRYPTO_THREAD_unlock(ssl->lock);
0f113f3e
MC		 845 return 1;
846}
dc644fe2 847
f85c9904 848int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
0f113f3e
MC		 849 unsigned int id_len)
850{
851 /*
852 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
69687aa8 853 * we can "construct" a session to give us the desired check - i.e. to
0f113f3e
MC		 854 * find if there's a session in the hash table that would conflict with
855 * any new session built out of this id/id_len and the ssl_version in use
856 * by this SSL.
857 */
858 SSL_SESSION r, *p;
859
860 if (id_len > sizeof r.session_id)
861 return 0;
862
863 r.ssl_version = ssl->version;
864 r.session_id_length = id_len;
865 memcpy(r.session_id, id, id_len);
866
e2bb9b9b
TS		 867 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
868 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
869 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
0f113f3e
MC		 870 return (p != NULL);
871}
dc644fe2 872
bb7cd4e3 873int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
0f113f3e
MC		 874{
875 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
876}
bb7cd4e3
DSH		 877
878int SSL_set_purpose(SSL *s, int purpose)
0f113f3e
MC		 879{
880 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
881}
926a56bf 882
bb7cd4e3 883int SSL_CTX_set_trust(SSL_CTX *s, int trust)
0f113f3e
MC		 884{
885 return X509_VERIFY_PARAM_set_trust(s->param, trust);
886}
bb7cd4e3
DSH		 887
888int SSL_set_trust(SSL *s, int trust)
0f113f3e
MC		 889{
890 return X509_VERIFY_PARAM_set_trust(s->param, trust);
891}
bb7cd4e3 892
919ba009
VD		 893int SSL_set1_host(SSL *s, const char *hostname)
894{
895 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
896}
897
898int SSL_add1_host(SSL *s, const char *hostname)
899{
900 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
901}
902
903void SSL_set_hostflags(SSL *s, unsigned int flags)
904{
905 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
906}
907
4588cb44 908const char *SSL_get0_peername(SSL *s)
919ba009
VD		 909{
910 return X509_VERIFY_PARAM_get0_peername(s->param);
911}
912
913int SSL_CTX_dane_enable(SSL_CTX *ctx)
914{
915 return dane_ctx_enable(&ctx->dane);
916}
917
5ae4ceb9
VD		 918unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
919{
920 unsigned long orig = ctx->dane.flags;
921
922 ctx->dane.flags |= flags;
923 return orig;
924}
925
926unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
927{
928 unsigned long orig = ctx->dane.flags;
929
930 ctx->dane.flags &= ~flags;
931 return orig;
932}
933
919ba009
VD		 934int SSL_dane_enable(SSL *s, const char *basedomain)
935{
b9aec69a 936 SSL_DANE *dane = &s->dane;
919ba009
VD		 937
938 if (s->ctx->dane.mdmax == 0) {
939 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
940 return 0;
941 }
942 if (dane->trecs != NULL) {
943 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
944 return 0;
945 }
946
8d887efa
VD		 947 /*
948 * Default SNI name. This rejects empty names, while set1_host below
949 * accepts them and disables host name checks. To avoid side-effects with
950 * invalid input, set the SNI name first.
951 */
aff8c126 952 if (s->ext.hostname == NULL) {
dccd20d1 953 if (!SSL_set_tlsext_host_name(s, basedomain)) {
8d887efa 954 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
dccd20d1 955 return -1;
8d887efa
VD		 956 }
957 }
958
919ba009
VD		 959 /* Primary RFC6125 reference identifier */
960 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
961 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
962 return -1;
963 }
964
919ba009
VD		 965 dane->mdpth = -1;
966 dane->pdpth = -1;
967 dane->dctx = &s->ctx->dane;
968 dane->trecs = sk_danetls_record_new_null();
969
970 if (dane->trecs == NULL) {
971 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
972 return -1;
973 }
974 return 1;
975}
976
5ae4ceb9
VD		 977unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
978{
979 unsigned long orig = ssl->dane.flags;
980
981 ssl->dane.flags |= flags;
982 return orig;
983}
984
985unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
986{
987 unsigned long orig = ssl->dane.flags;
988
989 ssl->dane.flags &= ~flags;
990 return orig;
991}
992
919ba009
VD		 993int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
994{
b9aec69a 995 SSL_DANE *dane = &s->dane;
919ba009 996
c0a445a9 997 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 998 return -1;
999 if (dane->mtlsa) {
1000 if (mcert)
1001 *mcert = dane->mcert;
1002 if (mspki)
1003 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1004 }
1005 return dane->mdpth;
1006}
1007
1008int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1009 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1010{
b9aec69a 1011 SSL_DANE *dane = &s->dane;
919ba009 1012
c0a445a9 1013 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
919ba009
VD		 1014 return -1;
1015 if (dane->mtlsa) {
1016 if (usage)
1017 *usage = dane->mtlsa->usage;
1018 if (selector)
1019 *selector = dane->mtlsa->selector;
1020 if (mtype)
1021 *mtype = dane->mtlsa->mtype;
1022 if (data)
1023 *data = dane->mtlsa->data;
1024 if (dlen)
1025 *dlen = dane->mtlsa->dlen;
1026 }
1027 return dane->mdpth;
1028}
1029
b9aec69a 1030SSL_DANE *SSL_get0_dane(SSL *s)
919ba009
VD		 1031{
1032 return &s->dane;
1033}
1034
1035int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1036 uint8_t mtype, unsigned char *data, size_t dlen)
1037{
1038 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1039}
1040
a230b26e
EK		 1041int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1042 uint8_t ord)
919ba009
VD		 1043{
1044 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1045}
1046
ccf11751 1047int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1048{
1049 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1050}
ccf11751
DSH		 1051
1052int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
0f113f3e
MC		 1053{
1054 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1055}
ccf11751 1056
7af31968 1057X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
0f113f3e
MC		 1058{
1059 return ctx->param;
1060}
7af31968
DSH		 1061
1062X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
0f113f3e
MC		 1063{
1064 return ssl->param;
1065}
7af31968 1066
a5ee80b9 1067void SSL_certs_clear(SSL *s)
0f113f3e
MC		 1068{
1069 ssl_cert_clear_certs(s->cert);
1070}
a5ee80b9 1071
4f43d0e7 1072void SSL_free(SSL *s)
0f113f3e
MC		 1073{
1074 int i;
58964a49 1075
0f113f3e
MC		 1076 if (s == NULL)
1077 return;
e03ddfae 1078
2f545ae4 1079 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
f3f1cf84 1080 REF_PRINT_COUNT("SSL", s);
0f113f3e
MC		 1081 if (i > 0)
1082 return;
f3f1cf84 1083 REF_ASSERT_ISNT(i < 0);
d02b48c6 1084
222561fe 1085 X509_VERIFY_PARAM_free(s->param);
919ba009 1086 dane_final(&s->dane);
0f113f3e
MC		 1087 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1088
b77f3ed1 1089 /* Ignore return value */
2e7dc7cd
MC		 1090 ssl_free_wbio_buffer(s);
1091
65e2d672 1092 BIO_free_all(s->wbio);
325cfa85 1093 BIO_free_all(s->rbio);
0f113f3e 1094
25aaa98a 1095 BUF_MEM_free(s->init_buf);
0f113f3e
MC		 1096
1097 /* add extra stuff */
25aaa98a
RS		 1098 sk_SSL_CIPHER_free(s->cipher_list);
1099 sk_SSL_CIPHER_free(s->cipher_list_by_id);
0f113f3e
MC		 1100
1101 /* Make the next call work :-) */
1102 if (s->session != NULL) {
1103 ssl_clear_bad_session(s);
1104 SSL_SESSION_free(s->session);
1105 }
9368f865 1106 SSL_SESSION_free(s->psksession);
add8d0e9 1107 OPENSSL_free(s->psksession_id);
0f113f3e 1108
d31fb0b5 1109 clear_ciphers(s);
d02b48c6 1110
e0e920b1 1111 ssl_cert_free(s->cert);
0f113f3e 1112 /* Free up if allocated */
d02b48c6 1113
aff8c126 1114 OPENSSL_free(s->ext.hostname);
222da979 1115 SSL_CTX_free(s->session_ctx);
e481f9b9 1116#ifndef OPENSSL_NO_EC
aff8c126
RS		 1117 OPENSSL_free(s->ext.ecpointformats);
1118 OPENSSL_free(s->ext.supportedgroups);
a230b26e 1119#endif /* OPENSSL_NO_EC */
aff8c126 1120 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
3e41ac35 1121#ifndef OPENSSL_NO_OCSP
aff8c126 1122 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
3e41ac35 1123#endif
ed29e82a
RP		 1124#ifndef OPENSSL_NO_CT
1125 SCT_LIST_free(s->scts);
aff8c126 1126 OPENSSL_free(s->ext.scts);
ed29e82a 1127#endif
aff8c126
RS		 1128 OPENSSL_free(s->ext.ocsp.resp);
1129 OPENSSL_free(s->ext.alpn);
cfef5027 1130 OPENSSL_free(s->ext.tls13_cookie);
6b1bb98f 1131 OPENSSL_free(s->clienthello);
0f113f3e 1132
fa7c2637 1133 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
0f113f3e 1134
696178ed
DSH		 1135 sk_X509_pop_free(s->verified_chain, X509_free);
1136
0f113f3e
MC		 1137 if (s->method != NULL)
1138 s->method->ssl_free(s);
1139
f161995e 1140 RECORD_LAYER_release(&s->rlayer);
33d23b87 1141
e0e920b1 1142 SSL_CTX_free(s->ctx);
7c3908dd 1143
ff75a257
MC		 1144 ASYNC_WAIT_CTX_free(s->waitctx);
1145
e481f9b9 1146#if !defined(OPENSSL_NO_NEXTPROTONEG)
aff8c126 1147 OPENSSL_free(s->ext.npn);
ee2ffc27
BL		 1148#endif
1149
e783bae2 1150#ifndef OPENSSL_NO_SRTP
25aaa98a 1151 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
0f113f3e
MC		 1152#endif
1153
ae3947de 1154 RAND_DRBG_free(s->drbg);
16203f7b
AG		 1155 CRYPTO_THREAD_lock_free(s->lock);
1156
0f113f3e
MC		 1157 OPENSSL_free(s);
1158}
1159
65e2d672 1160void SSL_set0_rbio(SSL *s, BIO *rbio)
3ffbe008 1161{
65e2d672 1162 BIO_free_all(s->rbio);
3ffbe008
MC		 1163 s->rbio = rbio;
1164}
1165
65e2d672 1166void SSL_set0_wbio(SSL *s, BIO *wbio)
0f113f3e
MC		 1167{
1168 /*
1169 * If the output buffering BIO is still in place, remove it
1170 */
2e7dc7cd
MC		 1171 if (s->bbio != NULL)
1172 s->wbio = BIO_pop(s->wbio);
1173
65e2d672 1174 BIO_free_all(s->wbio);
0f113f3e 1175 s->wbio = wbio;
2e7dc7cd
MC		 1176
1177 /* Re-attach |bbio| to the new |wbio|. */
1178 if (s->bbio != NULL)
1179 s->wbio = BIO_push(s->bbio, s->wbio);
0f113f3e 1180}
d02b48c6 1181
3ffbe008
MC		 1182void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1183{
65e2d672
MC		 1184 /*
1185 * For historical reasons, this function has many different cases in
1186 * ownership handling.
1187 */
1188
1189 /* If nothing has changed, do nothing */
1190 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1191 return;
1192
1193 /*
1194 * If the two arguments are equal then one fewer reference is granted by the
1195 * caller than we want to take
1196 */
1197 if (rbio != NULL && rbio == wbio)
1198 BIO_up_ref(rbio);
1199
1200 /*
1201 * If only the wbio is changed only adopt one reference.
1202 */
1203 if (rbio == SSL_get_rbio(s)) {
1204 SSL_set0_wbio(s, wbio);
1205 return;
1206 }
1207 /*
1208 * There is an asymmetry here for historical reasons. If only the rbio is
1209 * changed AND the rbio and wbio were originally different, then we only
1210 * adopt one reference.
1211 */
1212 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1213 SSL_set0_rbio(s, rbio);
1214 return;
1215 }
1216
1217 /* Otherwise, adopt both references. */
1218 SSL_set0_rbio(s, rbio);
1219 SSL_set0_wbio(s, wbio);
3ffbe008
MC		 1220}
1221
0821bcd4 1222BIO *SSL_get_rbio(const SSL *s)
0f113f3e 1223{
2e7dc7cd 1224 return s->rbio;
0f113f3e 1225}
d02b48c6 1226
0821bcd4 1227BIO *SSL_get_wbio(const SSL *s)
0f113f3e 1228{
2e7dc7cd
MC		 1229 if (s->bbio != NULL) {
1230 /*
1231 * If |bbio| is active, the true caller-configured BIO is its
1232 * |next_bio|.
1233 */
1234 return BIO_next(s->bbio);
1235 }
1236 return s->wbio;
0f113f3e 1237}
d02b48c6 1238
0821bcd4 1239int SSL_get_fd(const SSL *s)
0f113f3e 1240{
2e7dc7cd 1241 return SSL_get_rfd(s);
0f113f3e 1242}
24cbf3ef 1243
0821bcd4 1244int SSL_get_rfd(const SSL *s)
0f113f3e
MC		 1245{
1246 int ret = -1;
1247 BIO *b, *r;
1248
1249 b = SSL_get_rbio(s);
1250 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1251 if (r != NULL)
1252 BIO_get_fd(r, &ret);
26a7d938 1253 return ret;
0f113f3e 1254}
d02b48c6 1255
0821bcd4 1256int SSL_get_wfd(const SSL *s)
0f113f3e
MC		 1257{
1258 int ret = -1;
1259 BIO *b, *r;
1260
1261 b = SSL_get_wbio(s);
1262 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1263 if (r != NULL)
1264 BIO_get_fd(r, &ret);
26a7d938 1265 return ret;
0f113f3e 1266}
24cbf3ef 1267
bc36ee62 1268#ifndef OPENSSL_NO_SOCK
0f113f3e
MC		 1269int SSL_set_fd(SSL *s, int fd)
1270{
1271 int ret = 0;
1272 BIO *bio = NULL;
1273
1274 bio = BIO_new(BIO_s_socket());
1275
1276 if (bio == NULL) {
1277 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1278 goto err;
1279 }
1280 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1281 SSL_set_bio(s, bio, bio);
1282 ret = 1;
1283 err:
26a7d938 1284 return ret;
0f113f3e 1285}
d02b48c6 1286
0f113f3e
MC		 1287int SSL_set_wfd(SSL *s, int fd)
1288{
2e7dc7cd 1289 BIO *rbio = SSL_get_rbio(s);
0f113f3e 1290
2e7dc7cd
MC		 1291 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1292 || (int)BIO_get_fd(rbio, NULL) != fd) {
1293 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1294
1295 if (bio == NULL) {
1296 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
2e7dc7cd 1297 return 0;
0f113f3e
MC		 1298 }
1299 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1300 SSL_set0_wbio(s, bio);
2e7dc7cd 1301 } else {
65e2d672
MC		 1302 BIO_up_ref(rbio);
1303 SSL_set0_wbio(s, rbio);
2e7dc7cd
MC		 1304 }
1305 return 1;
0f113f3e
MC		 1306}
1307
1308int SSL_set_rfd(SSL *s, int fd)
1309{
2e7dc7cd 1310 BIO *wbio = SSL_get_wbio(s);
0f113f3e 1311
2e7dc7cd
MC		 1312 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1313 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1314 BIO *bio = BIO_new(BIO_s_socket());
0f113f3e
MC		 1315
1316 if (bio == NULL) {
1317 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
2e7dc7cd 1318 return 0;
0f113f3e
MC		 1319 }
1320 BIO_set_fd(bio, fd, BIO_NOCLOSE);
65e2d672 1321 SSL_set0_rbio(s, bio);
2e7dc7cd 1322 } else {
65e2d672
MC		 1323 BIO_up_ref(wbio);
1324 SSL_set0_rbio(s, wbio);
2e7dc7cd
MC		 1325 }
1326
1327 return 1;
0f113f3e
MC		 1328}
1329#endif
ca03109c
BM		 1330
1331/* return length of latest Finished message we sent, copy to 'buf' */
0821bcd4 1332size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1333{
1334 size_t ret = 0;
1335
1336 if (s->s3 != NULL) {
1337 ret = s->s3->tmp.finish_md_len;
1338 if (count > ret)
1339 count = ret;
1340 memcpy(buf, s->s3->tmp.finish_md, count);
1341 }
1342 return ret;
1343}
ca03109c
BM		 1344
1345/* return length of latest Finished message we expected, copy to 'buf' */
0821bcd4 1346size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
0f113f3e
MC		 1347{
1348 size_t ret = 0;
ca03109c 1349
0f113f3e
MC		 1350 if (s->s3 != NULL) {
1351 ret = s->s3->tmp.peer_finish_md_len;
1352 if (count > ret)
1353 count = ret;
1354 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1355 }
1356 return ret;
1357}
ca03109c 1358
0821bcd4 1359int SSL_get_verify_mode(const SSL *s)
0f113f3e 1360{
26a7d938 1361 return s->verify_mode;
0f113f3e 1362}
d02b48c6 1363
0821bcd4 1364int SSL_get_verify_depth(const SSL *s)
0f113f3e
MC		 1365{
1366 return X509_VERIFY_PARAM_get_depth(s->param);
1367}
7f89714e 1368
0f113f3e 1369int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
26a7d938 1370 return s->verify_callback;
0f113f3e 1371}
d02b48c6 1372
0821bcd4 1373int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
0f113f3e 1374{
26a7d938 1375 return ctx->verify_mode;
0f113f3e 1376}
d02b48c6 1377
0821bcd4 1378int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
0f113f3e
MC		 1379{
1380 return X509_VERIFY_PARAM_get_depth(ctx->param);
1381}
1382
1383int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
26a7d938 1384 return ctx->default_verify_callback;
0f113f3e
MC		 1385}
1386
1387void SSL_set_verify(SSL *s, int mode,
1388 int (*callback) (int ok, X509_STORE_CTX *ctx))
1389{
1390 s->verify_mode = mode;
1391 if (callback != NULL)
1392 s->verify_callback = callback;
1393}
1394
1395void SSL_set_verify_depth(SSL *s, int depth)
1396{
1397 X509_VERIFY_PARAM_set_depth(s->param, depth);
1398}
1399
1400void SSL_set_read_ahead(SSL *s, int yes)
1401{
52e1d7b1 1402 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
0f113f3e 1403}
d02b48c6 1404
0821bcd4 1405int SSL_get_read_ahead(const SSL *s)
0f113f3e 1406{
52e1d7b1 1407 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 1408}
d02b48c6 1409
0821bcd4 1410int SSL_pending(const SSL *s)
0f113f3e 1411{
8b0e934a
MC		 1412 size_t pending = s->method->ssl_pending(s);
1413
0f113f3e
MC		 1414 /*
1415 * SSL_pending cannot work properly if read-ahead is enabled
1416 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1417 * impossible to fix since SSL_pending cannot report errors that may be
1418 * observed while scanning the new data. (Note that SSL_pending() is
1419 * often used as a boolean value, so we'd better not return -1.)
8b0e934a
MC		 1420 *
1421 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1422 * we just return INT_MAX.
0f113f3e 1423 */
348240c6 1424 return pending < INT_MAX ? (int)pending : INT_MAX;
0f113f3e 1425}
d02b48c6 1426
49580f25
MC		 1427int SSL_has_pending(const SSL *s)
1428{
1429 /*
1430 * Similar to SSL_pending() but returns a 1 to indicate that we have
1431 * unprocessed data available or 0 otherwise (as opposed to the number of
1432 * bytes available). Unlike SSL_pending() this will take into account
1433 * read_ahead data. A 1 return simply indicates that we have unprocessed
1434 * data. That data may not result in any application data, or we may fail
1435 * to parse the records for some reason.
1436 */
b8c49611 1437 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
49580f25
MC		 1438 return 1;
1439
1440 return RECORD_LAYER_read_pending(&s->rlayer);
1441}
1442
0821bcd4 1443X509 *SSL_get_peer_certificate(const SSL *s)
0f113f3e
MC		 1444{
1445 X509 *r;
d02b48c6 1446
0f113f3e
MC		 1447 if ((s == NULL) || (s->session == NULL))
1448 r = NULL;
1449 else
1450 r = s->session->peer;
d02b48c6 1451
0f113f3e 1452 if (r == NULL)
26a7d938 1453 return r;
d02b48c6 1454
05f0fb9f 1455 X509_up_ref(r);
0f113f3e 1456
26a7d938 1457 return r;
0f113f3e 1458}
d02b48c6 1459
0821bcd4 1460STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
0f113f3e
MC		 1461{
1462 STACK_OF(X509) *r;
1463
c34b0f99 1464 if ((s == NULL) || (s->session == NULL))
0f113f3e
MC		 1465 r = NULL;
1466 else
c34b0f99 1467 r = s->session->peer_chain;
0f113f3e
MC		 1468
1469 /*
1470 * If we are a client, cert_chain includes the peer's own certificate; if
1471 * we are a server, it does not.
1472 */
1473
26a7d938 1474 return r;
0f113f3e
MC		 1475}
1476
1477/*
1478 * Now in theory, since the calling process own 't' it should be safe to
1479 * modify. We need to be able to read f without being hassled
1480 */
17dd65e6 1481int SSL_copy_session_id(SSL *t, const SSL *f)
0f113f3e 1482{
16203f7b 1483 int i;
0f113f3e 1484 /* Do we need to to SSL locking? */
61986d32 1485 if (!SSL_set_session(t, SSL_get_session(f))) {
17dd65e6 1486 return 0;
69f68237 1487 }
0f113f3e
MC		 1488
1489 /*
87d9cafa 1490 * what if we are setup for one protocol version but want to talk another
0f113f3e
MC		 1491 */
1492 if (t->method != f->method) {
919ba009
VD		 1493 t->method->ssl_free(t);
1494 t->method = f->method;
1495 if (t->method->ssl_new(t) == 0)
1496 return 0;
0f113f3e
MC		 1497 }
1498
2f545ae4 1499 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
24a0d393
KR		 1500 ssl_cert_free(t->cert);
1501 t->cert = f->cert;
348240c6 1502 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
17dd65e6 1503 return 0;
69f68237 1504 }
17dd65e6
MC		 1505
1506 return 1;
0f113f3e 1507}
d02b48c6 1508
58964a49 1509/* Fix this so it checks all the valid key/cert options */
0821bcd4 1510int SSL_CTX_check_private_key(const SSL_CTX *ctx)
0f113f3e 1511{
a230b26e
EK		 1512 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1513 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1514 return 0;
0f113f3e
MC		 1515 }
1516 if (ctx->cert->key->privatekey == NULL) {
a230b26e 1517 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1518 return 0;
0f113f3e 1519 }
26a7d938
K		 1520 return X509_check_private_key
1521 (ctx->cert->key->x509, ctx->cert->key->privatekey);
0f113f3e 1522}
d02b48c6 1523
58964a49 1524/* Fix this function so that it takes an optional type parameter */
0821bcd4 1525int SSL_check_private_key(const SSL *ssl)
0f113f3e
MC		 1526{
1527 if (ssl == NULL) {
1528 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
26a7d938 1529 return 0;
0f113f3e 1530 }
0f113f3e
MC		 1531 if (ssl->cert->key->x509 == NULL) {
1532 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
26a7d938 1533 return 0;
0f113f3e
MC		 1534 }
1535 if (ssl->cert->key->privatekey == NULL) {
1536 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
26a7d938 1537 return 0;
0f113f3e 1538 }
26a7d938
K		 1539 return X509_check_private_key(ssl->cert->key->x509,
1540 ssl->cert->key->privatekey);
0f113f3e 1541}
d02b48c6 1542
07bbc92c
MC		 1543int SSL_waiting_for_async(SSL *s)
1544{
e8aa8b6c 1545 if (s->job)
82676094
MC		 1546 return 1;
1547
07bbc92c
MC		 1548 return 0;
1549}
1550
ff75a257 1551int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
f4da39d2 1552{
ff75a257
MC		 1553 ASYNC_WAIT_CTX *ctx = s->waitctx;
1554
1555 if (ctx == NULL)
1556 return 0;
1557 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1558}
f4da39d2 1559
ff75a257
MC		 1560int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1561 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1562{
1563 ASYNC_WAIT_CTX *ctx = s->waitctx;
1564
1565 if (ctx == NULL)
1566 return 0;
1567 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1568 numdelfds);
f4da39d2
MC		 1569}
1570
4f43d0e7 1571int SSL_accept(SSL *s)
0f113f3e 1572{
c4c32155 1573 if (s->handshake_func == NULL) {
0f113f3e
MC		 1574 /* Not properly initialized yet */
1575 SSL_set_accept_state(s);
07bbc92c 1576 }
add2f5ca
MC		 1577
1578 return SSL_do_handshake(s);
0f113f3e 1579}
d02b48c6 1580
4f43d0e7 1581int SSL_connect(SSL *s)
0f113f3e 1582{
c4c32155 1583 if (s->handshake_func == NULL) {
0f113f3e
MC		 1584 /* Not properly initialized yet */
1585 SSL_set_connect_state(s);
add2f5ca 1586 }
b31b04d9 1587
add2f5ca 1588 return SSL_do_handshake(s);
0f113f3e 1589}
d02b48c6 1590
0821bcd4 1591long SSL_get_default_timeout(const SSL *s)
0f113f3e 1592{
26a7d938 1593 return s->method->get_timeout();
0f113f3e
MC		 1594}
1595
7fecbf6f 1596static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
a230b26e
EK		 1597 int (*func) (void *))
1598{
add2f5ca 1599 int ret;
ff75a257
MC		 1600 if (s->waitctx == NULL) {
1601 s->waitctx = ASYNC_WAIT_CTX_new();
1602 if (s->waitctx == NULL)
1603 return -1;
1604 }
e8aa8b6c 1605 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
a230b26e 1606 sizeof(struct ssl_async_args))) {
add2f5ca
MC		 1607 case ASYNC_ERR:
1608 s->rwstate = SSL_NOTHING;
7fecbf6f 1609 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
add2f5ca
MC		 1610 return -1;
1611 case ASYNC_PAUSE:
1612 s->rwstate = SSL_ASYNC_PAUSED;
1613 return -1;
fc7f190c
MC		 1614 case ASYNC_NO_JOBS:
1615 s->rwstate = SSL_ASYNC_NO_JOBS;
1616 return -1;
add2f5ca
MC		 1617 case ASYNC_FINISH:
1618 s->job = NULL;
1619 return ret;
1620 default:
1621 s->rwstate = SSL_NOTHING;
7fecbf6f 1622 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
add2f5ca
MC		 1623 /* Shouldn't happen */
1624 return -1;
1625 }
1626}
07bbc92c 1627
add2f5ca 1628static int ssl_io_intern(void *vargs)
07bbc92c
MC		 1629{
1630 struct ssl_async_args *args;
1631 SSL *s;
1632 void *buf;
348240c6 1633 size_t num;
07bbc92c
MC		 1634
1635 args = (struct ssl_async_args *)vargs;
1636 s = args->s;
1637 buf = args->buf;
1638 num = args->num;
ec447924
MC		 1639 switch (args->type) {
1640 case READFUNC:
7ee8627f 1641 return args->f.func_read(s, buf, num, &s->asyncrw);
ec447924 1642 case WRITEFUNC:
7ee8627f 1643 return args->f.func_write(s, buf, num, &s->asyncrw);
ec447924
MC		 1644 case OTHERFUNC:
1645 return args->f.func_other(s);
1646 }
1647 return -1;
07bbc92c
MC		 1648}
1649
4ee7d3f9 1650int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1651{
c4c32155 1652 if (s->handshake_func == NULL) {
4ee7d3f9 1653 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1654 return -1;
1655 }
1656
1657 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1658 s->rwstate = SSL_NOTHING;
4ee7d3f9 1659 return 0;
0f113f3e 1660 }
07bbc92c 1661
564547e4
MC		 1662 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1663 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
0a5ece5b
MC		 1664 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1665 return 0;
1666 }
564547e4
MC		 1667 /*
1668 * If we are a client and haven't received the ServerHello etc then we
1669 * better do that
1670 */
1671 ossl_statem_check_finish_init(s, 0);
0a5ece5b 1672
e8aa8b6c 1673 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1674 struct ssl_async_args args;
eda75751 1675 int ret;
add2f5ca
MC		 1676
1677 args.s = s;
1678 args.buf = buf;
1679 args.num = num;
ec447924
MC		 1680 args.type = READFUNC;
1681 args.f.func_read = s->method->ssl_read;
add2f5ca 1682
eda75751 1683 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1684 *readbytes = s->asyncrw;
eda75751 1685 return ret;
07bbc92c 1686 } else {
54105ddd 1687 return s->method->ssl_read(s, buf, num, readbytes);
07bbc92c 1688 }
0f113f3e
MC		 1689}
1690
4ee7d3f9 1691int SSL_read(SSL *s, void *buf, int num)
eda75751
MC		 1692{
1693 int ret;
54105ddd 1694 size_t readbytes;
eda75751
MC		 1695
1696 if (num < 0) {
4ee7d3f9 1697 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
eda75751
MC		 1698 return -1;
1699 }
1700
4ee7d3f9 1701 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
eda75751
MC		 1702
1703 /*
1704 * The cast is safe here because ret should be <= INT_MAX because num is
1705 * <= INT_MAX
1706 */
1707 if (ret > 0)
54105ddd 1708 ret = (int)readbytes;
eda75751
MC		 1709
1710 return ret;
1711}
1712
4ee7d3f9
KR		 1713int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1714{
1715 int ret = ssl_read_internal(s, buf, num, readbytes);
1716
1717 if (ret < 0)
1718 ret = 0;
1719 return ret;
1720}
1721
f533fbd4 1722int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
d781d247
MC		 1723{
1724 int ret;
1725
1726 if (!s->server) {
f533fbd4
MC		 1727 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1728 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1729 }
1730
d781d247
MC		 1731 switch (s->early_data_state) {
1732 case SSL_EARLY_DATA_NONE:
1733 if (!SSL_in_before(s)) {
f533fbd4
MC		 1734 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1735 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1736 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1737 }
1738 /* fall through */
1739
1740 case SSL_EARLY_DATA_ACCEPT_RETRY:
1741 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1742 ret = SSL_accept(s);
1743 if (ret <= 0) {
1744 /* NBIO or error */
1745 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
f533fbd4 1746 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1747 }
1748 /* fall through */
1749
1750 case SSL_EARLY_DATA_READ_RETRY:
1751 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1752 s->early_data_state = SSL_EARLY_DATA_READING;
1753 ret = SSL_read_ex(s, buf, num, readbytes);
1754 /*
ef6c191b
MC		 1755 * State machine will update early_data_state to
1756 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1757 * message
d781d247
MC		 1758 */
1759 if (ret > 0 || (ret <= 0 && s->early_data_state
1760 != SSL_EARLY_DATA_FINISHED_READING)) {
1761 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
f533fbd4
MC		 1762 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1763 : SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1764 }
1765 } else {
1766 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1767 }
1768 *readbytes = 0;
f533fbd4 1769 return SSL_READ_EARLY_DATA_FINISH;
d781d247
MC		 1770
1771 default:
f533fbd4
MC		 1772 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1773 return SSL_READ_EARLY_DATA_ERROR;
d781d247
MC		 1774 }
1775}
1776
f5b519c4 1777int SSL_get_early_data_status(const SSL *s)
1ea4d09a
MC		 1778{
1779 return s->ext.early_data;
1780}
1781
4ee7d3f9 1782static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
0f113f3e 1783{
c4c32155 1784 if (s->handshake_func == NULL) {
4ee7d3f9 1785 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1786 return -1;
1787 }
1788
1789 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
4ee7d3f9 1790 return 0;
0f113f3e 1791 }
e8aa8b6c 1792 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca 1793 struct ssl_async_args args;
eda75751 1794 int ret;
0f113f3e 1795
add2f5ca
MC		 1796 args.s = s;
1797 args.buf = buf;
1798 args.num = num;
ec447924
MC		 1799 args.type = READFUNC;
1800 args.f.func_read = s->method->ssl_peek;
07bbc92c 1801
eda75751 1802 ret = ssl_start_async_job(s, &args, ssl_io_intern);
54105ddd 1803 *readbytes = s->asyncrw;
eda75751 1804 return ret;
add2f5ca 1805 } else {
54105ddd 1806 return s->method->ssl_peek(s, buf, num, readbytes);
add2f5ca 1807 }
07bbc92c
MC		 1808}
1809
4ee7d3f9 1810int SSL_peek(SSL *s, void *buf, int num)
7ee8627f
MC		 1811{
1812 int ret;
4ee7d3f9 1813 size_t readbytes;
7ee8627f
MC		 1814
1815 if (num < 0) {
4ee7d3f9 1816 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
7ee8627f
MC		 1817 return -1;
1818 }
1819
4ee7d3f9 1820 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
7ee8627f
MC		 1821
1822 /*
1823 * The cast is safe here because ret should be <= INT_MAX because num is
1824 * <= INT_MAX
1825 */
1826 if (ret > 0)
4ee7d3f9 1827 ret = (int)readbytes;
7ee8627f
MC		 1828
1829 return ret;
1830}
1831
4ee7d3f9
KR		 1832
1833int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1834{
1835 int ret = ssl_peek_internal(s, buf, num, readbytes);
1836
1837 if (ret < 0)
1838 ret = 0;
1839 return ret;
1840}
1841
1842int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
0f113f3e 1843{
c4c32155 1844 if (s->handshake_func == NULL) {
4ee7d3f9 1845 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
0f113f3e
MC		 1846 return -1;
1847 }
1848
1849 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1850 s->rwstate = SSL_NOTHING;
4ee7d3f9
KR		 1851 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1852 return -1;
0f113f3e 1853 }
07bbc92c 1854
ef6c191b 1855 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
09f28874
MC		 1856 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1857 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
0a5ece5b 1858 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12 1859 return 0;
0a5ece5b 1860 }
564547e4
MC		 1861 /* If we are a client and haven't sent the Finished we better do that */
1862 ossl_statem_check_finish_init(s, 1);
49e7fe12 1863
e8aa8b6c 1864 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
7ee8627f 1865 int ret;
add2f5ca
MC		 1866 struct ssl_async_args args;
1867
1868 args.s = s;
1869 args.buf = (void *)buf;
1870 args.num = num;
ec447924
MC		 1871 args.type = WRITEFUNC;
1872 args.f.func_write = s->method->ssl_write;
add2f5ca 1873
7ee8627f
MC		 1874 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1875 *written = s->asyncrw;
1876 return ret;
07bbc92c 1877 } else {
7ee8627f 1878 return s->method->ssl_write(s, buf, num, written);
07bbc92c 1879 }
0f113f3e 1880}
d02b48c6 1881
4ee7d3f9
KR		 1882int SSL_write(SSL *s, const void *buf, int num)
1883{
1884 int ret;
1885 size_t written;
1886
1887 if (num < 0) {
1888 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1889 return -1;
1890 }
1891
1892 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1893
1894 /*
1895 * The cast is safe here because ret should be <= INT_MAX because num is
1896 * <= INT_MAX
1897 */
1898 if (ret > 0)
1899 ret = (int)written;
1900
1901 return ret;
1902}
1903
1904int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1905{
1906 int ret = ssl_write_internal(s, buf, num, written);
1907
1908 if (ret < 0)
1909 ret = 0;
1910 return ret;
1911}
1912
0665b4ed 1913int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
49e7fe12 1914{
a0cb628b 1915 int ret, early_data_state;
49e7fe12 1916
49e7fe12
MC		 1917 switch (s->early_data_state) {
1918 case SSL_EARLY_DATA_NONE:
09f28874
MC		 1919 if (s->server
1920 || !SSL_in_before(s)
add8d0e9
MC		 1921 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1922 && (s->psk_use_session_cb == NULL))) {
09f28874
MC		 1923 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
1924 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1925 return 0;
1926 }
1927 /* fall through */
1928
1929 case SSL_EARLY_DATA_CONNECT_RETRY:
1930 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
1931 ret = SSL_connect(s);
1932 if (ret <= 0) {
1933 /* NBIO or error */
1934 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
1935 return 0;
1936 }
1937 /* fall through */
1938
1939 case SSL_EARLY_DATA_WRITE_RETRY:
1940 s->early_data_state = SSL_EARLY_DATA_WRITING;
1941 ret = SSL_write_ex(s, buf, num, written);
1942 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
1943 return ret;
1944
116d0da5 1945 case SSL_EARLY_DATA_FINISHED_READING:
a0cb628b
MC		 1946 case SSL_EARLY_DATA_READ_RETRY:
1947 early_data_state = s->early_data_state;
09f28874
MC		 1948 /* We are a server writing to an unauthenticated client */
1949 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
1950 ret = SSL_write_ex(s, buf, num, written);
bbea9f2c 1951 s->early_data_state = early_data_state;
09f28874
MC		 1952 return ret;
1953
49e7fe12 1954 default:
09f28874 1955 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
49e7fe12
MC		 1956 return 0;
1957 }
1958}
1959
4f43d0e7 1960int SSL_shutdown(SSL *s)
0f113f3e
MC		 1961{
1962 /*
1963 * Note that this function behaves differently from what one might
1964 * expect. Return values are 0 for no success (yet), 1 for success; but
1965 * calling it once is usually not enough, even if blocking I/O is used
1966 * (see ssl3_shutdown).
1967 */
1968
c4c32155 1969 if (s->handshake_func == NULL) {
0f113f3e
MC		 1970 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
1971 return -1;
1972 }
1973
64f9f406 1974 if (!SSL_in_init(s)) {
e8aa8b6c 1975 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
64f9f406 1976 struct ssl_async_args args;
ec447924 1977
64f9f406
MC		 1978 args.s = s;
1979 args.type = OTHERFUNC;
1980 args.f.func_other = s->method->ssl_shutdown;
ec447924 1981
64f9f406
MC		 1982 return ssl_start_async_job(s, &args, ssl_io_intern);
1983 } else {
1984 return s->method->ssl_shutdown(s);
1985 }
ec447924 1986 } else {
64f9f406
MC		 1987 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
1988 return -1;
ec447924 1989 }
0f113f3e 1990}
d02b48c6 1991
4fbfe86a 1992int SSL_key_update(SSL *s, int updatetype)
44c04a2e 1993{
f14afcaa 1994 /*
a9998e2f 1995 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
f14afcaa
MC		 1996 * negotiated, and that it is appropriate to call SSL_key_update() instead
1997 * of SSL_renegotiate().
1998 */
44c04a2e
MC		 1999 if (!SSL_IS_TLS13(s)) {
2000 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2001 return 0;
2002 }
2003
2004 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2005 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2006 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2007 return 0;
2008 }
2009
2010 if (!SSL_is_init_finished(s)) {
2011 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2012 return 0;
2013 }
2014
2015 ossl_statem_set_in_init(s, 1);
44c04a2e 2016 s->key_update = updatetype;
44c04a2e
MC		 2017 return 1;
2018}
2019
4fbfe86a 2020int SSL_get_key_update_type(SSL *s)
53d1d07d
MC		 2021{
2022 return s->key_update;
2023}
2024
4f43d0e7 2025int SSL_renegotiate(SSL *s)
0f113f3e 2026{
44c04a2e
MC		 2027 if (SSL_IS_TLS13(s)) {
2028 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2029 return 0;
44c04a2e 2030 }
cda6b998 2031
db0f35dd
TS		 2032 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2033 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2034 return 0;
2035 }
44959ee4 2036
db0f35dd 2037 s->renegotiate = 1;
0f113f3e 2038 s->new_session = 1;
44959ee4 2039
26a7d938 2040 return s->method->ssl_renegotiate(s);
0f113f3e 2041}
d02b48c6 2042
44959ee4 2043int SSL_renegotiate_abbreviated(SSL *s)
0f113f3e 2044{
db0f35dd
TS		 2045 if (SSL_IS_TLS13(s)) {
2046 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2c0980d2 2047 return 0;
db0f35dd 2048 }
cda6b998 2049
db0f35dd
TS		 2050 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2051 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2052 return 0;
2053 }
c519e89f 2054
db0f35dd 2055 s->renegotiate = 1;
0f113f3e 2056 s->new_session = 0;
c519e89f 2057
26a7d938 2058 return s->method->ssl_renegotiate(s);
0f113f3e 2059}
44959ee4 2060
6b0e9fac 2061int SSL_renegotiate_pending(SSL *s)
0f113f3e
MC		 2062{
2063 /*
2064 * becomes true when negotiation is requested; false again once a
2065 * handshake has finished
2066 */
2067 return (s->renegotiate != 0);
2068}
2069
2070long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2071{
2072 long l;
2073
2074 switch (cmd) {
2075 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2076 return RECORD_LAYER_get_read_ahead(&s->rlayer);
0f113f3e 2077 case SSL_CTRL_SET_READ_AHEAD:
52e1d7b1
MC		 2078 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2079 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
26a7d938 2080 return l;
0f113f3e
MC		 2081
2082 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2083 s->msg_callback_arg = parg;
2084 return 1;
2085
0f113f3e
MC		 2086 case SSL_CTRL_MODE:
2087 return (s->mode |= larg);
2088 case SSL_CTRL_CLEAR_MODE:
2089 return (s->mode &= ~larg);
2090 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2091 return (long)s->max_cert_list;
0f113f3e 2092 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2093 if (larg < 0)
2094 return 0;
2095 l = (long)s->max_cert_list;
2096 s->max_cert_list = (size_t)larg;
2097 return l;
0f113f3e
MC		 2098 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2099 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2100 return 0;
2101 s->max_send_fragment = larg;
d102d9df
MC		 2102 if (s->max_send_fragment < s->split_send_fragment)
2103 s->split_send_fragment = s->max_send_fragment;
2104 return 1;
2105 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2106 if ((size_t)larg > s->max_send_fragment || larg == 0)
d102d9df
MC		 2107 return 0;
2108 s->split_send_fragment = larg;
0f113f3e 2109 return 1;
d102d9df
MC		 2110 case SSL_CTRL_SET_MAX_PIPELINES:
2111 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2112 return 0;
2113 s->max_pipelines = larg;
94777c9c
MC		 2114 if (larg > 1)
2115 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
07077415 2116 return 1;
0f113f3e
MC		 2117 case SSL_CTRL_GET_RI_SUPPORT:
2118 if (s->s3)
2119 return s->s3->send_connection_binding;
2120 else
2121 return 0;
2122 case SSL_CTRL_CERT_FLAGS:
2123 return (s->cert->cert_flags |= larg);
2124 case SSL_CTRL_CLEAR_CERT_FLAGS:
2125 return (s->cert->cert_flags &= ~larg);
2126
2127 case SSL_CTRL_GET_RAW_CIPHERLIST:
2128 if (parg) {
76106e60 2129 if (s->s3->tmp.ciphers_raw == NULL)
0f113f3e 2130 return 0;
76106e60
DSH		 2131 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2132 return (int)s->s3->tmp.ciphers_rawlen;
e9fa092e
EK		 2133 } else {
2134 return TLS_CIPHER_LEN;
2135 }
c5364614 2136 case SSL_CTRL_GET_EXTMS_SUPPORT:
024f543c 2137 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
a230b26e 2138 return -1;
dccd20d1 2139 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
c5364614
DSH		 2140 return 1;
2141 else
2142 return 0;
7946ab33 2143 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2144 return ssl_check_allowed_versions(larg, s->max_proto_version)
2145 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2146 &s->min_proto_version);
3edabd3c
CH		 2147 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2148 return s->min_proto_version;
7946ab33 2149 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2150 return ssl_check_allowed_versions(s->min_proto_version, larg)
2151 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2152 &s->max_proto_version);
3edabd3c
CH		 2153 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2154 return s->max_proto_version;
0f113f3e 2155 default:
26a7d938 2156 return s->method->ssl_ctrl(s, cmd, larg, parg);
0f113f3e
MC		 2157 }
2158}
2159
2160long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2161{
2162 switch (cmd) {
2163 case SSL_CTRL_SET_MSG_CALLBACK:
2164 s->msg_callback = (void (*)
2165 (int write_p, int version, int content_type,
2166 const void *buf, size_t len, SSL *ssl,
2167 void *arg))(fp);
2168 return 1;
2169
2170 default:
26a7d938 2171 return s->method->ssl_callback_ctrl(s, cmd, fp);
0f113f3e
MC		 2172 }
2173}
d3442bc7 2174
3c1d6bbc 2175LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
0f113f3e
MC		 2176{
2177 return ctx->sessions;
2178}
2179
2180long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2181{
2182 long l;
1fcb4e4d 2183 int i;
0f113f3e
MC		 2184 /* For some cases with ctx == NULL perform syntax checks */
2185 if (ctx == NULL) {
2186 switch (cmd) {
14536c8c 2187#ifndef OPENSSL_NO_EC
de4d764e
MC		 2188 case SSL_CTRL_SET_GROUPS_LIST:
2189 return tls1_set_groups_list(NULL, NULL, parg);
0f113f3e
MC		 2190#endif
2191 case SSL_CTRL_SET_SIGALGS_LIST:
2192 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2193 return tls1_set_sigalgs_list(NULL, parg, 0);
2194 default:
2195 return 0;
2196 }
2197 }
2198
2199 switch (cmd) {
2200 case SSL_CTRL_GET_READ_AHEAD:
26a7d938 2201 return ctx->read_ahead;
0f113f3e
MC		 2202 case SSL_CTRL_SET_READ_AHEAD:
2203 l = ctx->read_ahead;
2204 ctx->read_ahead = larg;
26a7d938 2205 return l;
0f113f3e
MC		 2206
2207 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2208 ctx->msg_callback_arg = parg;
2209 return 1;
2210
2211 case SSL_CTRL_GET_MAX_CERT_LIST:
26a7d938 2212 return (long)ctx->max_cert_list;
0f113f3e 2213 case SSL_CTRL_SET_MAX_CERT_LIST:
348240c6
MC		 2214 if (larg < 0)
2215 return 0;
2216 l = (long)ctx->max_cert_list;
2217 ctx->max_cert_list = (size_t)larg;
2218 return l;
0f113f3e
MC		 2219
2220 case SSL_CTRL_SET_SESS_CACHE_SIZE:
348240c6
MC		 2221 if (larg < 0)
2222 return 0;
2223 l = (long)ctx->session_cache_size;
2224 ctx->session_cache_size = (size_t)larg;
2225 return l;
0f113f3e 2226 case SSL_CTRL_GET_SESS_CACHE_SIZE:
26a7d938 2227 return (long)ctx->session_cache_size;
0f113f3e
MC		 2228 case SSL_CTRL_SET_SESS_CACHE_MODE:
2229 l = ctx->session_cache_mode;
2230 ctx->session_cache_mode = larg;
26a7d938 2231 return l;
0f113f3e 2232 case SSL_CTRL_GET_SESS_CACHE_MODE:
26a7d938 2233 return ctx->session_cache_mode;
0f113f3e
MC		 2234
2235 case SSL_CTRL_SESS_NUMBER:
26a7d938 2236 return lh_SSL_SESSION_num_items(ctx->sessions);
0f113f3e 2237 case SSL_CTRL_SESS_CONNECT:
1fcb4e4d
BK		 2238 return CRYPTO_atomic_read(&ctx->stats.sess_connect, &i, ctx->lock)
2239 ? i : 0;
0f113f3e 2240 case SSL_CTRL_SESS_CONNECT_GOOD:
1fcb4e4d
BK		 2241 return CRYPTO_atomic_read(&ctx->stats.sess_connect_good, &i, ctx->lock)
2242 ? i : 0;
0f113f3e 2243 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
1fcb4e4d
BK		 2244 return CRYPTO_atomic_read(&ctx->stats.sess_connect_renegotiate, &i,
2245 ctx->lock)
2246 ? i : 0;
0f113f3e 2247 case SSL_CTRL_SESS_ACCEPT:
1fcb4e4d
BK		 2248 return CRYPTO_atomic_read(&ctx->stats.sess_accept, &i, ctx->lock)
2249 ? i : 0;
0f113f3e 2250 case SSL_CTRL_SESS_ACCEPT_GOOD:
1fcb4e4d
BK		 2251 return CRYPTO_atomic_read(&ctx->stats.sess_accept_good, &i, ctx->lock)
2252 ? i : 0;
0f113f3e 2253 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
1fcb4e4d
BK		 2254 return CRYPTO_atomic_read(&ctx->stats.sess_accept_renegotiate, &i,
2255 ctx->lock)
2256 ? i : 0;
0f113f3e 2257 case SSL_CTRL_SESS_HIT:
1fcb4e4d
BK		 2258 return CRYPTO_atomic_read(&ctx->stats.sess_hit, &i, ctx->lock)
2259 ? i : 0;
0f113f3e 2260 case SSL_CTRL_SESS_CB_HIT:
1fcb4e4d
BK		 2261 return CRYPTO_atomic_read(&ctx->stats.sess_cb_hit, &i, ctx->lock)
2262 ? i : 0;
0f113f3e 2263 case SSL_CTRL_SESS_MISSES:
1fcb4e4d
BK		 2264 return CRYPTO_atomic_read(&ctx->stats.sess_miss, &i, ctx->lock)
2265 ? i : 0;
0f113f3e 2266 case SSL_CTRL_SESS_TIMEOUTS:
1fcb4e4d
BK		 2267 return CRYPTO_atomic_read(&ctx->stats.sess_timeout, &i, ctx->lock)
2268 ? i : 0;
0f113f3e 2269 case SSL_CTRL_SESS_CACHE_FULL:
1fcb4e4d
BK		 2270 return CRYPTO_atomic_read(&ctx->stats.sess_cache_full, &i, ctx->lock)
2271 ? i : 0;
0f113f3e
MC		 2272 case SSL_CTRL_MODE:
2273 return (ctx->mode |= larg);
2274 case SSL_CTRL_CLEAR_MODE:
2275 return (ctx->mode &= ~larg);
2276 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2277 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2278 return 0;
2279 ctx->max_send_fragment = larg;
d102d9df 2280 if (ctx->max_send_fragment < ctx->split_send_fragment)
bfb155c1 2281 ctx->split_send_fragment = ctx->max_send_fragment;
0f113f3e 2282 return 1;
d102d9df 2283 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
7ee8627f 2284 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
d102d9df
MC		 2285 return 0;
2286 ctx->split_send_fragment = larg;
2287 return 1;
2288 case SSL_CTRL_SET_MAX_PIPELINES:
2289 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2290 return 0;
2291 ctx->max_pipelines = larg;
07077415 2292 return 1;
0f113f3e
MC		 2293 case SSL_CTRL_CERT_FLAGS:
2294 return (ctx->cert->cert_flags |= larg);
2295 case SSL_CTRL_CLEAR_CERT_FLAGS:
2296 return (ctx->cert->cert_flags &= ~larg);
7946ab33 2297 case SSL_CTRL_SET_MIN_PROTO_VERSION:
c8feba72
BK		 2298 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2299 && ssl_set_version_bound(ctx->method->version, (int)larg,
2300 &ctx->min_proto_version);
3edabd3c
CH		 2301 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2302 return ctx->min_proto_version;
7946ab33 2303 case SSL_CTRL_SET_MAX_PROTO_VERSION:
c8feba72
BK		 2304 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2305 && ssl_set_version_bound(ctx->method->version, (int)larg,
2306 &ctx->max_proto_version);
3edabd3c
CH		 2307 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2308 return ctx->max_proto_version;
0f113f3e 2309 default:
26a7d938 2310 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
0f113f3e
MC		 2311 }
2312}
2313
2314long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2315{
2316 switch (cmd) {
2317 case SSL_CTRL_SET_MSG_CALLBACK:
2318 ctx->msg_callback = (void (*)
2319 (int write_p, int version, int content_type,
2320 const void *buf, size_t len, SSL *ssl,
2321 void *arg))(fp);
2322 return 1;
2323
2324 default:
26a7d938 2325 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
0f113f3e
MC		 2326 }
2327}
d3442bc7 2328
ccd86b68 2329int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
0f113f3e 2330{
90d9e49a
DSH		 2331 if (a->id > b->id)
2332 return 1;
2333 if (a->id < b->id)
2334 return -1;
2335 return 0;
0f113f3e
MC		 2336}
2337
2338int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2339 const SSL_CIPHER *const *bp)
2340{
90d9e49a
DSH		 2341 if ((*ap)->id > (*bp)->id)
2342 return 1;
2343 if ((*ap)->id < (*bp)->id)
2344 return -1;
2345 return 0;
0f113f3e 2346}
d02b48c6 2347
4f43d0e7 2348/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2349 * preference */
0821bcd4 2350STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
0f113f3e
MC		 2351{
2352 if (s != NULL) {
2353 if (s->cipher_list != NULL) {
26a7d938 2354 return s->cipher_list;
0f113f3e 2355 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
26a7d938 2356 return s->ctx->cipher_list;
0f113f3e
MC		 2357 }
2358 }
26a7d938 2359 return NULL;
0f113f3e
MC		 2360}
2361
831eef2c
NM		 2362STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2363{
2364 if ((s == NULL) || (s->session == NULL) || !s->server)
2365 return NULL;
2366 return s->session->ciphers;
2367}
2368
8b8e5bed 2369STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
0f113f3e
MC		 2370{
2371 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2372 int i;
2373 ciphers = SSL_get_ciphers(s);
2374 if (!ciphers)
2375 return NULL;
2376 ssl_set_client_disabled(s);
2377 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2378 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
8af91fd9 2379 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
0f113f3e
MC		 2380 if (!sk)
2381 sk = sk_SSL_CIPHER_new_null();
2382 if (!sk)
2383 return NULL;
2384 if (!sk_SSL_CIPHER_push(sk, c)) {
2385 sk_SSL_CIPHER_free(sk);
2386 return NULL;
2387 }
2388 }
2389 }
2390 return sk;
2391}
8b8e5bed 2392
4f43d0e7 2393/** return a STACK of the ciphers available for the SSL and in order of
d02b48c6 2394 * algorithm id */
f73e07cf 2395STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
0f113f3e
MC		 2396{
2397 if (s != NULL) {
2398 if (s->cipher_list_by_id != NULL) {
26a7d938 2399 return s->cipher_list_by_id;
0f113f3e 2400 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
26a7d938 2401 return s->ctx->cipher_list_by_id;
0f113f3e
MC		 2402 }
2403 }
26a7d938 2404 return NULL;
0f113f3e 2405}
d02b48c6 2406
4f43d0e7 2407/** The old interface to get the same thing as SSL_get_ciphers() */
0f113f3e
MC		 2408const char *SSL_get_cipher_list(const SSL *s, int n)
2409{
4a640fb6 2410 const SSL_CIPHER *c;
0f113f3e
MC		 2411 STACK_OF(SSL_CIPHER) *sk;
2412
2413 if (s == NULL)
26a7d938 2414 return NULL;
0f113f3e
MC		 2415 sk = SSL_get_ciphers(s);
2416 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
26a7d938 2417 return NULL;
0f113f3e
MC		 2418 c = sk_SSL_CIPHER_value(sk, n);
2419 if (c == NULL)
26a7d938
K		 2420 return NULL;
2421 return c->name;
0f113f3e 2422}
d02b48c6 2423
9d5ac953
KY		 2424/** return a STACK of the ciphers available for the SSL_CTX and in order of
2425 * preference */
2426STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2427{
2428 if (ctx != NULL)
2429 return ctx->cipher_list;
2430 return NULL;
2431}
2432
25f923dd 2433/** specify the ciphers to be used by default by the SSL_CTX */
018e57c7 2434int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
0f113f3e
MC		 2435{
2436 STACK_OF(SSL_CIPHER) *sk;
2437
2438 sk = ssl_create_cipher_list(ctx->method, &ctx->cipher_list,
2439 &ctx->cipher_list_by_id, str, ctx->cert);
2440 /*
2441 * ssl_create_cipher_list may return an empty stack if it was unable to
2442 * find a cipher matching the given rule string (for example if the rule
2443 * string specifies a cipher which has been disabled). This is not an
2444 * error as far as ssl_create_cipher_list is concerned, and hence
2445 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2446 */
2447 if (sk == NULL)
2448 return 0;
2449 else if (sk_SSL_CIPHER_num(sk) == 0) {
2450 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2451 return 0;
2452 }
2453 return 1;
2454}
d02b48c6 2455
4f43d0e7 2456/** specify the ciphers to be used by the SSL */
0f113f3e
MC		 2457int SSL_set_cipher_list(SSL *s, const char *str)
2458{
2459 STACK_OF(SSL_CIPHER) *sk;
2460
2461 sk = ssl_create_cipher_list(s->ctx->method, &s->cipher_list,
2462 &s->cipher_list_by_id, str, s->cert);
2463 /* see comment in SSL_CTX_set_cipher_list */
2464 if (sk == NULL)
2465 return 0;
2466 else if (sk_SSL_CIPHER_num(sk) == 0) {
2467 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2468 return 0;
2469 }
2470 return 1;
2471}
d02b48c6 2472
0f113f3e
MC		 2473char *SSL_get_shared_ciphers(const SSL *s, char *buf, int len)
2474{
2475 char *p;
2476 STACK_OF(SSL_CIPHER) *sk;
4a640fb6 2477 const SSL_CIPHER *c;
0f113f3e
MC		 2478 int i;
2479
2480 if ((s->session == NULL) || (s->session->ciphers == NULL) || (len < 2))
26a7d938 2481 return NULL;
0f113f3e
MC		 2482
2483 p = buf;
2484 sk = s->session->ciphers;
2485
2486 if (sk_SSL_CIPHER_num(sk) == 0)
2487 return NULL;
2488
2489 for (i = 0; i < sk_SSL_CIPHER_num(sk); i++) {
2490 int n;
2491
2492 c = sk_SSL_CIPHER_value(sk, i);
2493 n = strlen(c->name);
2494 if (n + 1 > len) {
2495 if (p != buf)
2496 --p;
2497 *p = '\0';
2498 return buf;
2499 }
4cacc9d5 2500 strcpy(p, c->name);
0f113f3e
MC		 2501 p += n;
2502 *(p++) = ':';
2503 len -= n + 1;
2504 }
2505 p[-1] = '\0';
26a7d938 2506 return buf;
0f113f3e
MC		 2507}
2508
52b8dad8 2509/** return a servername extension value if provided in Client Hello, or NULL.
f1fd4544 2510 * So far, only host_name types are defined (RFC 3546).
ed3883d2
BM		 2511 */
2512
f1fd4544 2513const char *SSL_get_servername(const SSL *s, const int type)
0f113f3e
MC		 2514{
2515 if (type != TLSEXT_NAMETYPE_host_name)
2516 return NULL;
a13c20f6 2517
aff8c126
RS		 2518 return s->session && !s->ext.hostname ?
2519 s->session->ext.hostname : s->ext.hostname;
0f113f3e 2520}
ed3883d2 2521
f1fd4544 2522int SSL_get_servername_type(const SSL *s)
0f113f3e
MC		 2523{
2524 if (s->session
aff8c126
RS		 2525 && (!s->ext.hostname ? s->session->
2526 ext.hostname : s->ext.hostname))
0f113f3e
MC		 2527 return TLSEXT_NAMETYPE_host_name;
2528 return -1;
2529}
ee2ffc27 2530
0f113f3e
MC		 2531/*
2532 * SSL_select_next_proto implements the standard protocol selection. It is
ee2ffc27 2533 * expected that this function is called from the callback set by
0f113f3e
MC		 2534 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2535 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2536 * not included in the length. A byte string of length 0 is invalid. No byte
2537 * string may be truncated. The current, but experimental algorithm for
2538 * selecting the protocol is: 1) If the server doesn't support NPN then this
2539 * is indicated to the callback. In this case, the client application has to
2540 * abort the connection or have a default application level protocol. 2) If
2541 * the server supports NPN, but advertises an empty list then the client
f430ba31 2542 * selects the first protocol in its list, but indicates via the API that this
0f113f3e
MC		 2543 * fallback case was enacted. 3) Otherwise, the client finds the first
2544 * protocol in the server's list that it supports and selects this protocol.
2545 * This is because it's assumed that the server has better information about
2546 * which protocol a client should use. 4) If the client doesn't support any
2547 * of the server's advertised protocols, then this is treated the same as
2548 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2549 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
ee2ffc27 2550 */
0f113f3e
MC		 2551int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2552 const unsigned char *server,
2553 unsigned int server_len,
a230b26e 2554 const unsigned char *client, unsigned int client_len)
0f113f3e
MC		 2555{
2556 unsigned int i, j;
2557 const unsigned char *result;
2558 int status = OPENSSL_NPN_UNSUPPORTED;
2559
2560 /*
2561 * For each protocol in server preference order, see if we support it.
2562 */
2563 for (i = 0; i < server_len;) {
2564 for (j = 0; j < client_len;) {
2565 if (server[i] == client[j] &&
2566 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2567 /* We found a match */
2568 result = &server[i];
2569 status = OPENSSL_NPN_NEGOTIATED;
2570 goto found;
2571 }
2572 j += client[j];
2573 j++;
2574 }
2575 i += server[i];
2576 i++;
2577 }
2578
2579 /* There's no overlap between our protocols and the server's list. */
2580 result = client;
2581 status = OPENSSL_NPN_NO_OVERLAP;
2582
2583 found:
2584 *out = (unsigned char *)result + 1;
2585 *outlen = result[0];
2586 return status;
2587}
ee2ffc27 2588
e481f9b9 2589#ifndef OPENSSL_NO_NEXTPROTONEG
0f113f3e
MC		 2590/*
2591 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2592 * client's requested protocol for this connection and returns 0. If the
2593 * client didn't request any protocol, then *data is set to NULL. Note that
2594 * the client can request any protocol it chooses. The value returned from
2595 * this function need not be a member of the list of supported protocols
ee2ffc27
BL		 2596 * provided by the callback.
2597 */
0f113f3e
MC		 2598void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2599 unsigned *len)
2600{
aff8c126 2601 *data = s->ext.npn;
0f113f3e
MC		 2602 if (!*data) {
2603 *len = 0;
2604 } else {
aff8c126 2605 *len = (unsigned int)s->ext.npn_len;
0f113f3e
MC		 2606 }
2607}
2608
2609/*
aff8c126 2610 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
0f113f3e
MC		 2611 * a TLS server needs a list of supported protocols for Next Protocol
2612 * Negotiation. The returned list must be in wire format. The list is
2613 * returned by setting |out| to point to it and |outlen| to its length. This
2614 * memory will not be modified, but one should assume that the SSL* keeps a
2615 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2616 * wishes to advertise. Otherwise, no such extension will be included in the
2617 * ServerHello.
2618 */
aff8c126 2619void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
8cbfcc70 2620 SSL_CTX_npn_advertised_cb_func cb,
aff8c126 2621 void *arg)
0f113f3e 2622{
aff8c126
RS		 2623 ctx->ext.npn_advertised_cb = cb;
2624 ctx->ext.npn_advertised_cb_arg = arg;
0f113f3e
MC		 2625}
2626
2627/*
2628 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
ee2ffc27
BL		 2629 * client needs to select a protocol from the server's provided list. |out|
2630 * must be set to point to the selected protocol (which may be within |in|).
0f113f3e
MC		 2631 * The length of the protocol name must be written into |outlen|. The
2632 * server's advertised protocols are provided in |in| and |inlen|. The
2633 * callback can assume that |in| is syntactically valid. The client must
2634 * select a protocol. It is fatal to the connection if this callback returns
2635 * a value other than SSL_TLSEXT_ERR_OK.
ee2ffc27 2636 */
aff8c126 2637void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
8cbfcc70 2638 SSL_CTX_npn_select_cb_func cb,
aff8c126 2639 void *arg)
0f113f3e 2640{
aff8c126
RS		 2641 ctx->ext.npn_select_cb = cb;
2642 ctx->ext.npn_select_cb_arg = arg;
0f113f3e 2643}
e481f9b9 2644#endif
a398f821 2645
0f113f3e
MC		 2646/*
2647 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
6f017a8f 2648 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2649 * length-prefixed strings). Returns 0 on success.
2650 */
2651int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
817cd0d5 2652 unsigned int protos_len)
0f113f3e 2653{
aff8c126
RS		 2654 OPENSSL_free(ctx->ext.alpn);
2655 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2656 if (ctx->ext.alpn == NULL) {
72e9be3d 2657 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2658 return 1;
72e9be3d 2659 }
aff8c126 2660 ctx->ext.alpn_len = protos_len;
0f113f3e
MC		 2661
2662 return 0;
2663}
2664
2665/*
2666 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
6f017a8f 2667 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
0f113f3e
MC		 2668 * length-prefixed strings). Returns 0 on success.
2669 */
2670int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
817cd0d5 2671 unsigned int protos_len)
0f113f3e 2672{
aff8c126
RS		 2673 OPENSSL_free(ssl->ext.alpn);
2674 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2675 if (ssl->ext.alpn == NULL) {
72e9be3d 2676 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
0f113f3e 2677 return 1;
72e9be3d 2678 }
aff8c126 2679 ssl->ext.alpn_len = protos_len;
0f113f3e
MC		 2680
2681 return 0;
2682}
2683
2684/*
2685 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2686 * called during ClientHello processing in order to select an ALPN protocol
2687 * from the client's list of offered protocols.
2688 */
2689void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
8cbfcc70
RS		 2690 SSL_CTX_alpn_select_cb_func cb,
2691 void *arg)
0f113f3e 2692{
aff8c126
RS		 2693 ctx->ext.alpn_select_cb = cb;
2694 ctx->ext.alpn_select_cb_arg = arg;
0f113f3e
MC		 2695}
2696
2697/*
69687aa8
F		 2698 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2699 * On return it sets |*data| to point to |*len| bytes of protocol name
0f113f3e
MC		 2700 * (not including the leading length-prefix byte). If the server didn't
2701 * respond with a negotiated protocol then |*len| will be zero.
2702 */
6f017a8f 2703void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
817cd0d5 2704 unsigned int *len)
0f113f3e
MC		 2705{
2706 *data = NULL;
2707 if (ssl->s3)
2708 *data = ssl->s3->alpn_selected;
2709 if (*data == NULL)
2710 *len = 0;
2711 else
348240c6 2712 *len = (unsigned int)ssl->s3->alpn_selected_len;
0f113f3e
MC		 2713}
2714
74b4b494 2715int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
0f113f3e 2716 const char *label, size_t llen,
23cec1f4 2717 const unsigned char *context, size_t contextlen,
0f113f3e
MC		 2718 int use_context)
2719{
c8a18468 2720 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
0f113f3e 2721 return -1;
e0af0405 2722
0f113f3e 2723 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
23cec1f4
MC		 2724 llen, context,
2725 contextlen, use_context);
0f113f3e 2726}
e0af0405 2727
3c1d6bbc 2728static unsigned long ssl_session_hash(const SSL_SESSION *a)
0f113f3e 2729{
bd5d27c1 2730 const unsigned char *session_id = a->session_id;
0f113f3e 2731 unsigned long l;
bd5d27c1
DB		 2732 unsigned char tmp_storage[4];
2733
2734 if (a->session_id_length < sizeof(tmp_storage)) {
2735 memset(tmp_storage, 0, sizeof(tmp_storage));
2736 memcpy(tmp_storage, a->session_id, a->session_id_length);
2737 session_id = tmp_storage;
2738 }
0f113f3e
MC		 2739
2740 l = (unsigned long)
bd5d27c1
DB		 2741 ((unsigned long)session_id[0]) |
2742 ((unsigned long)session_id[1] << 8L) |
2743 ((unsigned long)session_id[2] << 16L) |
2744 ((unsigned long)session_id[3] << 24L);
26a7d938 2745 return l;
0f113f3e
MC		 2746}
2747
2748/*
2749 * NB: If this function (or indeed the hash function which uses a sort of
dc644fe2 2750 * coarser function than this one) is changed, ensure
0f113f3e
MC		 2751 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2752 * being able to construct an SSL_SESSION that will collide with any existing
2753 * session with a matching session ID.
2754 */
2755static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2756{
2757 if (a->ssl_version != b->ssl_version)
208fb891 2758 return 1;
0f113f3e 2759 if (a->session_id_length != b->session_id_length)
208fb891 2760 return 1;
26a7d938 2761 return memcmp(a->session_id, b->session_id, a->session_id_length);
0f113f3e
MC		 2762}
2763
2764/*
2765 * These wrapper functions should remain rather than redeclaring
d0fa136c 2766 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
0f113f3e
MC		 2767 * variable. The reason is that the functions aren't static, they're exposed
2768 * via ssl.h.
2769 */
97b17195 2770
4ebb342f 2771SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
0f113f3e
MC		 2772{
2773 SSL_CTX *ret = NULL;
2774
2775 if (meth == NULL) {
2776 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
26a7d938 2777 return NULL;
0f113f3e
MC		 2778 }
2779
0fc32b07
MC		 2780 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2781 return NULL;
7fa792d1 2782
0f113f3e
MC		 2783 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2784 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2785 goto err;
2786 }
b51bce94 2787 ret = OPENSSL_zalloc(sizeof(*ret));
0f113f3e
MC		 2788 if (ret == NULL)
2789 goto err;
2790
0f113f3e 2791 ret->method = meth;
7946ab33
KR		 2792 ret->min_proto_version = 0;
2793 ret->max_proto_version = 0;
0f113f3e
MC		 2794 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2795 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
64b25758 2796 /* We take the system default. */
0f113f3e 2797 ret->session_timeout = meth->get_timeout();
0f113f3e 2798 ret->references = 1;
16203f7b
AG		 2799 ret->lock = CRYPTO_THREAD_lock_new();
2800 if (ret->lock == NULL) {
2801 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2802 OPENSSL_free(ret);
2803 return NULL;
2804 }
0f113f3e 2805 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
0f113f3e 2806 ret->verify_mode = SSL_VERIFY_NONE;
0f113f3e
MC		 2807 if ((ret->cert = ssl_cert_new()) == NULL)
2808 goto err;
2809
62d0577e 2810 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
0f113f3e
MC		 2811 if (ret->sessions == NULL)
2812 goto err;
2813 ret->cert_store = X509_STORE_new();
2814 if (ret->cert_store == NULL)
2815 goto err;
ed29e82a
RP		 2816#ifndef OPENSSL_NO_CT
2817 ret->ctlog_store = CTLOG_STORE_new();
2818 if (ret->ctlog_store == NULL)
2819 goto err;
2820#endif
61986d32 2821 if (!ssl_create_cipher_list(ret->method,
a230b26e
EK		 2822 &ret->cipher_list, &ret->cipher_list_by_id,
2823 SSL_DEFAULT_CIPHER_LIST, ret->cert)
2824 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
0f113f3e
MC		 2825 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
2826 goto err2;
2827 }
2828
2829 ret->param = X509_VERIFY_PARAM_new();
a71edf3b 2830 if (ret->param == NULL)
0f113f3e
MC		 2831 goto err;
2832
2833 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
2834 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
2835 goto err2;
2836 }
2837 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
2838 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
2839 goto err2;
2840 }
2841
fa7c2637 2842 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
0f113f3e
MC		 2843 goto err;
2844
25a807bc
F		 2845 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
2846 goto err;
0f113f3e 2847
0f113f3e
MC		 2848 /* No compression for DTLS */
2849 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
2850 ret->comp_methods = SSL_COMP_get_compression_methods();
2851
2852 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
d102d9df 2853 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
566dda07 2854
4e2e1ec9 2855 /* Setup RFC5077 ticket keys */
aff8c126
RS		 2856 if ((RAND_bytes(ret->ext.tick_key_name,
2857 sizeof(ret->ext.tick_key_name)) <= 0)
2858 || (RAND_bytes(ret->ext.tick_hmac_key,
2859 sizeof(ret->ext.tick_hmac_key)) <= 0)
2860 || (RAND_bytes(ret->ext.tick_aes_key,
2861 sizeof(ret->ext.tick_aes_key)) <= 0))
0f113f3e 2862 ret->options |= SSL_OP_NO_TICKET;
6434abbf 2863
edc032b5 2864#ifndef OPENSSL_NO_SRP
61986d32 2865 if (!SSL_CTX_SRP_CTX_init(ret))
69f68237 2866 goto err;
edc032b5 2867#endif
4db9677b 2868#ifndef OPENSSL_NO_ENGINE
0f113f3e
MC		 2869# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
2870# define eng_strx(x) #x
2871# define eng_str(x) eng_strx(x)
2872 /* Use specific client engine automatically... ignore errors */
2873 {
2874 ENGINE *eng;
2875 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2876 if (!eng) {
2877 ERR_clear_error();
2878 ENGINE_load_builtin_engines();
2879 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
2880 }
2881 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
2882 ERR_clear_error();
2883 }
2884# endif
2885#endif
2886 /*
2887 * Default is to connect to non-RI servers. When RI is more widely
2888 * deployed might change this.
2889 */
2890 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
dc5744cb
EK		 2891 /*
2892 * Disable compression by default to prevent CRIME. Applications can
2893 * re-enable compression by configuring
2894 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
2895 * or by using the SSL_CONF library.
2896 */
2897 ret->options |= SSL_OP_NO_COMPRESSION;
0f113f3e 2898
aff8c126 2899 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
ba261f71 2900
bfa9a9af
MC		 2901 /*
2902 * Default max early data is a fully loaded single record. Could be split
2903 * across multiple records in practice
2904 */
2905 ret->max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
2906
16203f7b 2907 return ret;
0f113f3e
MC		 2908 err:
2909 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2910 err2:
e0e920b1 2911 SSL_CTX_free(ret);
16203f7b 2912 return NULL;
0f113f3e 2913}
d02b48c6 2914
c5ebfcab 2915int SSL_CTX_up_ref(SSL_CTX *ctx)
a18a31e4 2916{
16203f7b 2917 int i;
c5ebfcab 2918
2f545ae4 2919 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
c5ebfcab
F		 2920 return 0;
2921
2922 REF_PRINT_COUNT("SSL_CTX", ctx);
2923 REF_ASSERT_ISNT(i < 2);
2924 return ((i > 1) ? 1 : 0);
a18a31e4
MC		 2925}
2926
4f43d0e7 2927void SSL_CTX_free(SSL_CTX *a)
0f113f3e
MC		 2928{
2929 int i;
d02b48c6 2930
0f113f3e
MC		 2931 if (a == NULL)
2932 return;
d02b48c6 2933
2f545ae4 2934 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
f3f1cf84 2935 REF_PRINT_COUNT("SSL_CTX", a);
0f113f3e
MC		 2936 if (i > 0)
2937 return;
f3f1cf84 2938 REF_ASSERT_ISNT(i < 0);
0f113f3e 2939
222561fe 2940 X509_VERIFY_PARAM_free(a->param);
919ba009 2941 dane_ctx_final(&a->dane);
0f113f3e
MC		 2942
2943 /*
2944 * Free internal session cache. However: the remove_cb() may reference
2945 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
2946 * after the sessions were flushed.
2947 * As the ex_data handling routines might also touch the session cache,
2948 * the most secure solution seems to be: empty (flush) the cache, then
2949 * free ex_data, then finally free the cache.
2950 * (See ticket [openssl.org #212].)
2951 */
2952 if (a->sessions != NULL)
2953 SSL_CTX_flush_sessions(a, 0);
2954
2955 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
25aaa98a 2956 lh_SSL_SESSION_free(a->sessions);
222561fe 2957 X509_STORE_free(a->cert_store);
ed29e82a
RP		 2958#ifndef OPENSSL_NO_CT
2959 CTLOG_STORE_free(a->ctlog_store);
2960#endif
25aaa98a
RS		 2961 sk_SSL_CIPHER_free(a->cipher_list);
2962 sk_SSL_CIPHER_free(a->cipher_list_by_id);
e0e920b1 2963 ssl_cert_free(a->cert);
fa7c2637 2964 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
222561fe 2965 sk_X509_pop_free(a->extra_certs, X509_free);
0f113f3e 2966 a->comp_methods = NULL;
e783bae2 2967#ifndef OPENSSL_NO_SRTP
25aaa98a 2968 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
e783bae2 2969#endif
edc032b5 2970#ifndef OPENSSL_NO_SRP
0f113f3e 2971 SSL_CTX_SRP_CTX_free(a);
edc032b5 2972#endif
bdfe932d 2973#ifndef OPENSSL_NO_ENGINE
7c96dbcd 2974 ENGINE_finish(a->client_cert_engine);
ddac1974 2975#endif
8671b898 2976
e481f9b9 2977#ifndef OPENSSL_NO_EC
aff8c126
RS		 2978 OPENSSL_free(a->ext.ecpointformats);
2979 OPENSSL_free(a->ext.supportedgroups);
8671b898 2980#endif
aff8c126 2981 OPENSSL_free(a->ext.alpn);
8671b898 2982
16203f7b
AG		 2983 CRYPTO_THREAD_lock_free(a->lock);
2984
0f113f3e
MC		 2985 OPENSSL_free(a);
2986}
d02b48c6 2987
3ae76679 2988void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
0f113f3e
MC		 2989{
2990 ctx->default_passwd_callback = cb;
2991}
2992
2993void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
2994{
2995 ctx->default_passwd_callback_userdata = u;
2996}
2997
0c452abc
CH		 2998pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
2999{
3000 return ctx->default_passwd_callback;
3001}
3002
3003void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3004{
3005 return ctx->default_passwd_callback_userdata;
3006}
3007
a974e64a
MC		 3008void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3009{
3010 s->default_passwd_callback = cb;
3011}
3012
3013void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3014{
3015 s->default_passwd_callback_userdata = u;
3016}
3017
0c452abc
CH		 3018pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3019{
3020 return s->default_passwd_callback;
3021}
3022
3023void *SSL_get_default_passwd_cb_userdata(SSL *s)
3024{
3025 return s->default_passwd_callback_userdata;
3026}
3027
0f113f3e
MC		 3028void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3029 int (*cb) (X509_STORE_CTX *, void *),
3030 void *arg)
3031{
3032 ctx->app_verify_callback = cb;
3033 ctx->app_verify_arg = arg;
3034}
3035
3036void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3037 int (*cb) (int, X509_STORE_CTX *))
3038{
3039 ctx->verify_mode = mode;
3040 ctx->default_verify_callback = cb;
3041}
3042
3043void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3044{
3045 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3046}
3047
a230b26e 3048void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
0f113f3e
MC		 3049{
3050 ssl_cert_set_cert_cb(c->cert, cb, arg);
3051}
3052
3053void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3054{
3055 ssl_cert_set_cert_cb(s->cert, cb, arg);
3056}
18d71588 3057
2cf28d61 3058void ssl_set_masks(SSL *s)
0f113f3e 3059{
6383d316 3060 CERT *c = s->cert;
f7d53487 3061 uint32_t *pvalid = s->s3->tmp.valid_flags;
bc71f910 3062 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
361a1191 3063 unsigned long mask_k, mask_a;
10bf4fc2 3064#ifndef OPENSSL_NO_EC
361a1191 3065 int have_ecc_cert, ecdsa_ok;
14536c8c 3066#endif
0f113f3e
MC		 3067 if (c == NULL)
3068 return;
d02b48c6 3069
bc36ee62 3070#ifndef OPENSSL_NO_DH
0f113f3e 3071 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
d02b48c6 3072#else
361a1191 3073 dh_tmp = 0;
d02b48c6
RE		 3074#endif
3075
d0ff28f8 3076 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
38e8f3cd
DSH		 3077 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3078 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
14536c8c 3079#ifndef OPENSSL_NO_EC
6383d316 3080 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
14536c8c 3081#endif
0f113f3e
MC		 3082 mask_k = 0;
3083 mask_a = 0;
0e1dba93 3084
d02b48c6 3085#ifdef CIPHER_DEBUG
b7557ccf
AG		 3086 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3087 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
0f113f3e
MC		 3088#endif
3089
2a9b9654 3090#ifndef OPENSSL_NO_GOST
4020c0b3 3091 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
e44380a9
DB		 3092 mask_k |= SSL_kGOST;
3093 mask_a |= SSL_aGOST12;
3094 }
4020c0b3 3095 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
e44380a9
DB		 3096 mask_k |= SSL_kGOST;
3097 mask_a |= SSL_aGOST12;
3098 }
4020c0b3 3099 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
0f113f3e
MC		 3100 mask_k |= SSL_kGOST;
3101 mask_a |= SSL_aGOST01;
3102 }
2a9b9654 3103#endif
0f113f3e 3104
361a1191 3105 if (rsa_enc)
0f113f3e 3106 mask_k |= SSL_kRSA;
d02b48c6 3107
0f113f3e
MC		 3108 if (dh_tmp)
3109 mask_k |= SSL_kDHE;
d02b48c6 3110
6aaa29fb
DSH		 3111 /*
3112 * If we only have an RSA-PSS certificate allow RSA authentication
3113 * if TLS 1.2 and peer supports it.
3114 */
3115
3116 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3117 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3118 && TLS1_get_version(s) == TLS1_2_VERSION))
0f113f3e 3119 mask_a |= SSL_aRSA;
d02b48c6 3120
0f113f3e
MC		 3121 if (dsa_sign) {
3122 mask_a |= SSL_aDSS;
0f113f3e 3123 }
d02b48c6 3124
0f113f3e 3125 mask_a |= SSL_aNULL;
d02b48c6 3126
0f113f3e
MC		 3127 /*
3128 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3129 * depending on the key usage extension.
3130 */
14536c8c 3131#ifndef OPENSSL_NO_EC
0f113f3e 3132 if (have_ecc_cert) {
a8d8e06b 3133 uint32_t ex_kusage;
4020c0b3 3134 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
a8d8e06b 3135 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
6383d316 3136 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
0f113f3e 3137 ecdsa_ok = 0;
c7c46256 3138 if (ecdsa_ok)
0f113f3e 3139 mask_a |= SSL_aECDSA;
0f113f3e 3140 }
b2021556
DSH		 3141 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3142 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3143 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3144 && TLS1_get_version(s) == TLS1_2_VERSION)
3145 mask_a |= SSL_aECDSA;
14536c8c 3146#endif
ea262260 3147
10bf4fc2 3148#ifndef OPENSSL_NO_EC
fe6ef247 3149 mask_k |= SSL_kECDHE;
ea262260 3150#endif
ddac1974
NL		 3151
3152#ifndef OPENSSL_NO_PSK
0f113f3e
MC		 3153 mask_k |= SSL_kPSK;
3154 mask_a |= SSL_aPSK;
526f94ad
DSH		 3155 if (mask_k & SSL_kRSA)
3156 mask_k |= SSL_kRSAPSK;
3157 if (mask_k & SSL_kDHE)
3158 mask_k |= SSL_kDHEPSK;
3159 if (mask_k & SSL_kECDHE)
3160 mask_k |= SSL_kECDHEPSK;
ddac1974
NL		 3161#endif
3162
4d69f9e6
DSH		 3163 s->s3->tmp.mask_k = mask_k;
3164 s->s3->tmp.mask_a = mask_a;
0f113f3e 3165}
d02b48c6 3166
ef236ec3
DSH		 3167#ifndef OPENSSL_NO_EC
3168
a2f9200f 3169int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
0f113f3e 3170{
ce0c1f2b 3171 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
0f113f3e 3172 /* key usage, if present, must allow signing */
ce0c1f2b 3173 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
0f113f3e
MC		 3174 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3175 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3176 return 0;
3177 }
3178 }
0f113f3e
MC		 3179 return 1; /* all checks are ok */
3180}
ea262260 3181
ef236ec3
DSH		 3182#endif
3183
a398f821 3184int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
0f113f3e
MC		 3185 size_t *serverinfo_length)
3186{
a497cf25 3187 CERT_PKEY *cpk = s->s3->tmp.cert;
0f113f3e
MC		 3188 *serverinfo_length = 0;
3189
a497cf25 3190 if (cpk == NULL || cpk->serverinfo == NULL)
0f113f3e
MC		 3191 return 0;
3192
a497cf25
DSH		 3193 *serverinfo = cpk->serverinfo;
3194 *serverinfo_length = cpk->serverinfo_length;
0f113f3e
MC		 3195 return 1;
3196}
0f113f3e
MC		 3197
3198void ssl_update_cache(SSL *s, int mode)
3199{
3200 int i;
3201
3202 /*
3203 * If the session_id_length is 0, we are not supposed to cache it, and it
3204 * would be rather hard to do anyway :-)
3205 */
3206 if (s->session->session_id_length == 0)
3207 return;
3208
3209 i = s->session_ctx->session_cache_mode;
5d61491c
MC		 3210 if ((i & mode) != 0
3211 && (!s->hit || SSL_IS_TLS13(s))
3212 && ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) != 0
0f113f3e 3213 || SSL_CTX_add_session(s->session_ctx, s->session))
5d61491c 3214 && s->session_ctx->new_session_cb != NULL) {
16203f7b 3215 SSL_SESSION_up_ref(s->session);
0f113f3e
MC		 3216 if (!s->session_ctx->new_session_cb(s, s->session))
3217 SSL_SESSION_free(s->session);
3218 }
3219
3220 /* auto flush every 255 connections */
3221 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
1fcb4e4d
BK		 3222 int *stat, val;
3223 if (mode & SSL_SESS_CACHE_CLIENT)
3224 stat = &s->session_ctx->stats.sess_connect_good;
3225 else
3226 stat = &s->session_ctx->stats.sess_accept_good;
3227 if (CRYPTO_atomic_read(stat, &val, s->session_ctx->lock)
3228 && (val & 0xff) == 0xff)
0f113f3e 3229 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
0f113f3e
MC		 3230 }
3231}
d02b48c6 3232
ba168244 3233const SSL_METHOD *SSL_CTX_get_ssl_method(SSL_CTX *ctx)
0f113f3e
MC		 3234{
3235 return ctx->method;
3236}
ba168244 3237
4ebb342f 3238const SSL_METHOD *SSL_get_ssl_method(SSL *s)
0f113f3e 3239{
26a7d938 3240 return s->method;
0f113f3e 3241}
d02b48c6 3242
4ebb342f 3243int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
0f113f3e 3244{
0f113f3e
MC		 3245 int ret = 1;
3246
3247 if (s->method != meth) {
919ba009 3248 const SSL_METHOD *sm = s->method;
a230b26e 3249 int (*hf) (SSL *) = s->handshake_func;
0f113f3e 3250
919ba009 3251 if (sm->version == meth->version)
0f113f3e
MC		 3252 s->method = meth;
3253 else {
919ba009 3254 sm->ssl_free(s);
0f113f3e
MC		 3255 s->method = meth;
3256 ret = s->method->ssl_new(s);
3257 }
3258
919ba009 3259 if (hf == sm->ssl_connect)
0f113f3e 3260 s->handshake_func = meth->ssl_connect;
919ba009 3261 else if (hf == sm->ssl_accept)
0f113f3e
MC		 3262 s->handshake_func = meth->ssl_accept;
3263 }
26a7d938 3264 return ret;
0f113f3e
MC		 3265}
3266
3267int SSL_get_error(const SSL *s, int i)
3268{
3269 int reason;
3270 unsigned long l;
3271 BIO *bio;
3272
3273 if (i > 0)
26a7d938 3274 return SSL_ERROR_NONE;
0f113f3e
MC		 3275
3276 /*
3277 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3278 * where we do encode the error
3279 */
3280 if ((l = ERR_peek_error()) != 0) {
3281 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
26a7d938 3282 return SSL_ERROR_SYSCALL;
0f113f3e 3283 else
26a7d938 3284 return SSL_ERROR_SSL;
0f113f3e
MC		 3285 }
3286
8051ab2b
MC		 3287 if (SSL_want_read(s)) {
3288 bio = SSL_get_rbio(s);
3289 if (BIO_should_read(bio))
26a7d938 3290 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3291 else if (BIO_should_write(bio))
3292 /*
3293 * This one doesn't make too much sense ... We never try to write
3294 * to the rbio, and an application program where rbio and wbio
3295 * are separate couldn't even know what it should wait for.
3296 * However if we ever set s->rwstate incorrectly (so that we have
3297 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3298 * wbio *are* the same, this test works around that bug; so it
3299 * might be safer to keep it.
3300 */
26a7d938 3301 return SSL_ERROR_WANT_WRITE;
8051ab2b
MC		 3302 else if (BIO_should_io_special(bio)) {
3303 reason = BIO_get_retry_reason(bio);
3304 if (reason == BIO_RR_CONNECT)
26a7d938 3305 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3306 else if (reason == BIO_RR_ACCEPT)
26a7d938 3307 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3308 else
26a7d938 3309 return SSL_ERROR_SYSCALL; /* unknown */
0f113f3e 3310 }
8051ab2b 3311 }
0f113f3e 3312
8051ab2b 3313 if (SSL_want_write(s)) {
69687aa8 3314 /* Access wbio directly - in order to use the buffered bio if present */
8051ab2b
MC		 3315 bio = s->wbio;
3316 if (BIO_should_write(bio))
26a7d938 3317 return SSL_ERROR_WANT_WRITE;
8051ab2b 3318 else if (BIO_should_read(bio))
2e7dc7cd 3319 /*
8051ab2b 3320 * See above (SSL_want_read(s) with BIO_should_write(bio))
2e7dc7cd 3321 */
26a7d938 3322 return SSL_ERROR_WANT_READ;
8051ab2b
MC		 3323 else if (BIO_should_io_special(bio)) {
3324 reason = BIO_get_retry_reason(bio);
3325 if (reason == BIO_RR_CONNECT)
26a7d938 3326 return SSL_ERROR_WANT_CONNECT;
8051ab2b 3327 else if (reason == BIO_RR_ACCEPT)
26a7d938 3328 return SSL_ERROR_WANT_ACCEPT;
8051ab2b 3329 else
26a7d938 3330 return SSL_ERROR_SYSCALL;
0f113f3e 3331 }
07bbc92c 3332 }
6b1bb98f 3333 if (SSL_want_x509_lookup(s))
26a7d938 3334 return SSL_ERROR_WANT_X509_LOOKUP;
6b1bb98f 3335 if (SSL_want_async(s))
8051ab2b 3336 return SSL_ERROR_WANT_ASYNC;
6b1bb98f 3337 if (SSL_want_async_job(s))
8051ab2b 3338 return SSL_ERROR_WANT_ASYNC_JOB;
a9c0d8be
DB		 3339 if (SSL_want_client_hello_cb(s))
3340 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
8051ab2b
MC		 3341
3342 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3343 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
26a7d938 3344 return SSL_ERROR_ZERO_RETURN;
8051ab2b 3345
26a7d938 3346 return SSL_ERROR_SYSCALL;
0f113f3e 3347}
d02b48c6 3348
add2f5ca
MC		 3349static int ssl_do_handshake_intern(void *vargs)
3350{
3351 struct ssl_async_args *args;
3352 SSL *s;
3353
3354 args = (struct ssl_async_args *)vargs;
3355 s = args->s;
3356
3357 return s->handshake_func(s);
3358}
3359
4f43d0e7 3360int SSL_do_handshake(SSL *s)
0f113f3e
MC		 3361{
3362 int ret = 1;
3363
3364 if (s->handshake_func == NULL) {
3365 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
add2f5ca 3366 return -1;
0f113f3e
MC		 3367 }
3368
3eaa4170 3369 ossl_statem_check_finish_init(s, -1);
49e7fe12 3370
c7f47786 3371 s->method->ssl_renegotiate_check(s, 0);
0f113f3e 3372
190b9a03
PY		 3373 if (SSL_is_server(s)) {
3374 /* clear SNI settings at server-side */
3375 OPENSSL_free(s->ext.hostname);
3376 s->ext.hostname = NULL;
3377 }
3378
0f113f3e 3379 if (SSL_in_init(s) || SSL_in_before(s)) {
e8aa8b6c 3380 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
add2f5ca
MC		 3381 struct ssl_async_args args;
3382
3383 args.s = s;
3384
7fecbf6f 3385 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
add2f5ca
MC		 3386 } else {
3387 ret = s->handshake_func(s);
3388 }
0f113f3e 3389 }
add2f5ca 3390 return ret;
0f113f3e
MC		 3391}
3392
4f43d0e7 3393void SSL_set_accept_state(SSL *s)
0f113f3e
MC		 3394{
3395 s->server = 1;
3396 s->shutdown = 0;
fe3a3291 3397 ossl_statem_clear(s);
0f113f3e 3398 s->handshake_func = s->method->ssl_accept;
d31fb0b5 3399 clear_ciphers(s);
0f113f3e 3400}
d02b48c6 3401
4f43d0e7 3402void SSL_set_connect_state(SSL *s)
0f113f3e
MC		 3403{
3404 s->server = 0;
3405 s->shutdown = 0;
fe3a3291 3406 ossl_statem_clear(s);
0f113f3e 3407 s->handshake_func = s->method->ssl_connect;
d31fb0b5 3408 clear_ciphers(s);
0f113f3e 3409}
d02b48c6 3410
4f43d0e7 3411int ssl_undefined_function(SSL *s)
0f113f3e
MC		 3412{
3413 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3414 return 0;
0f113f3e 3415}
d02b48c6 3416
41a15c4f 3417int ssl_undefined_void_function(void)
0f113f3e
MC		 3418{
3419 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3420 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3421 return 0;
0f113f3e 3422}
41a15c4f 3423
0821bcd4 3424int ssl_undefined_const_function(const SSL *s)
0f113f3e 3425{
26a7d938 3426 return 0;
0f113f3e 3427}
0821bcd4 3428
2b8fa1d5 3429const SSL_METHOD *ssl_bad_method(int ver)
0f113f3e
MC		 3430{
3431 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
26a7d938 3432 return NULL;
0f113f3e 3433}
d02b48c6 3434
3eb2aff4 3435const char *ssl_protocol_to_string(int version)
7d650072 3436{
2abacef1
MC		 3437 switch(version)
3438 {
3439 case TLS1_3_VERSION:
582a17d6 3440 return "TLSv1.3";
2abacef1
MC		 3441
3442 case TLS1_2_VERSION:
7d650072 3443 return "TLSv1.2";
2abacef1
MC		 3444
3445 case TLS1_1_VERSION:
7d650072 3446 return "TLSv1.1";
2abacef1
MC		 3447
3448 case TLS1_VERSION:
ee3a6c64 3449 return "TLSv1";
2abacef1
MC		 3450
3451 case SSL3_VERSION:
7d650072 3452 return "SSLv3";
2abacef1
MC		 3453
3454 case DTLS1_BAD_VER:
7d650072 3455 return "DTLSv0.9";
2abacef1
MC		 3456
3457 case DTLS1_VERSION:
7d650072 3458 return "DTLSv1";
2abacef1
MC		 3459
3460 case DTLS1_2_VERSION:
7d650072 3461 return "DTLSv1.2";
2abacef1
MC		 3462
3463 default:
3464 return "unknown";
3465 }
0f113f3e 3466}
d02b48c6 3467
7d650072
KR		 3468const char *SSL_get_version(const SSL *s)
3469{
3eb2aff4 3470 return ssl_protocol_to_string(s->version);
7d650072
KR		 3471}
3472
4f43d0e7 3473SSL *SSL_dup(SSL *s)
0f113f3e
MC		 3474{
3475 STACK_OF(X509_NAME) *sk;
3476 X509_NAME *xn;
3477 SSL *ret;
3478 int i;
3479
919ba009
VD		 3480 /* If we're not quiescent, just up_ref! */
3481 if (!SSL_in_init(s) || !SSL_in_before(s)) {
2f545ae4 3482 CRYPTO_UP_REF(&s->references, &i, s->lock);
919ba009
VD		 3483 return s;
3484 }
3485
3486 /*
3487 * Otherwise, copy configuration state, and session if set.
3488 */
0f113f3e 3489 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
26a7d938 3490 return NULL;
0f113f3e 3491
0f113f3e 3492 if (s->session != NULL) {
919ba009
VD		 3493 /*
3494 * Arranges to share the same session via up_ref. This "copies"
3495 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3496 */
61986d32 3497 if (!SSL_copy_session_id(ret, s))
17dd65e6 3498 goto err;
0f113f3e
MC		 3499 } else {
3500 /*
3501 * No session has been established yet, so we have to expect that
3502 * s->cert or ret->cert will be changed later -- they should not both
3503 * point to the same object, and thus we can't use
3504 * SSL_copy_session_id.
3505 */
919ba009
VD		 3506 if (!SSL_set_ssl_method(ret, s->method))
3507 goto err;
0f113f3e
MC		 3508
3509 if (s->cert != NULL) {
e0e920b1 3510 ssl_cert_free(ret->cert);
0f113f3e
MC		 3511 ret->cert = ssl_cert_dup(s->cert);
3512 if (ret->cert == NULL)
3513 goto err;
3514 }
3515
348240c6
MC		 3516 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3517 (int)s->sid_ctx_length))
69f68237 3518 goto err;
0f113f3e
MC		 3519 }
3520
9f6b22b8
VD		 3521 if (!ssl_dane_dup(ret, s))
3522 goto err;
919ba009 3523 ret->version = s->version;
0f113f3e
MC		 3524 ret->options = s->options;
3525 ret->mode = s->mode;
3526 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3527 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3528 ret->msg_callback = s->msg_callback;
3529 ret->msg_callback_arg = s->msg_callback_arg;
3530 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3531 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3532 ret->generate_session_id = s->generate_session_id;
3533
3534 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3535
0f113f3e
MC		 3536 /* copy app data, a little dangerous perhaps */
3537 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3538 goto err;
3539
3540 /* setup rbio, and wbio */
3541 if (s->rbio != NULL) {
3542 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3543 goto err;
3544 }
3545 if (s->wbio != NULL) {
3546 if (s->wbio != s->rbio) {
3547 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3548 goto err;
65e2d672
MC		 3549 } else {
3550 BIO_up_ref(ret->rbio);
0f113f3e 3551 ret->wbio = ret->rbio;
65e2d672 3552 }
0f113f3e 3553 }
919ba009 3554
0f113f3e 3555 ret->server = s->server;
919ba009
VD		 3556 if (s->handshake_func) {
3557 if (s->server)
3558 SSL_set_accept_state(ret);
3559 else
3560 SSL_set_connect_state(ret);
3561 }
0f113f3e 3562 ret->shutdown = s->shutdown;
0f113f3e
MC		 3563 ret->hit = s->hit;
3564
a974e64a
MC		 3565 ret->default_passwd_callback = s->default_passwd_callback;
3566 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3567
0f113f3e
MC		 3568 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3569
3570 /* dup the cipher_list and cipher_list_by_id stacks */
3571 if (s->cipher_list != NULL) {
3572 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3573 goto err;
3574 }
3575 if (s->cipher_list_by_id != NULL)
3576 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3577 == NULL)
3578 goto err;
3579
3580 /* Dup the client_CA list */
fa7c2637
DSH		 3581 if (s->ca_names != NULL) {
3582 if ((sk = sk_X509_NAME_dup(s->ca_names)) == NULL)
0f113f3e 3583 goto err;
fa7c2637 3584 ret->ca_names = sk;
0f113f3e
MC		 3585 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
3586 xn = sk_X509_NAME_value(sk, i);
3587 if (sk_X509_NAME_set(sk, i, X509_NAME_dup(xn)) == NULL) {
3588 X509_NAME_free(xn);
3589 goto err;
3590 }
3591 }
3592 }
66696478 3593 return ret;
0f113f3e 3594
0f113f3e 3595 err:
66696478
RS		 3596 SSL_free(ret);
3597 return NULL;
0f113f3e 3598}
d02b48c6 3599
4f43d0e7 3600void ssl_clear_cipher_ctx(SSL *s)
0f113f3e
MC		 3601{
3602 if (s->enc_read_ctx != NULL) {
846ec07d 3603 EVP_CIPHER_CTX_free(s->enc_read_ctx);
0f113f3e
MC		 3604 s->enc_read_ctx = NULL;
3605 }
3606 if (s->enc_write_ctx != NULL) {
846ec07d 3607 EVP_CIPHER_CTX_free(s->enc_write_ctx);
0f113f3e
MC		 3608 s->enc_write_ctx = NULL;
3609 }
09b6c2ef 3610#ifndef OPENSSL_NO_COMP
efa7dd64
RS		 3611 COMP_CTX_free(s->expand);
3612 s->expand = NULL;
3613 COMP_CTX_free(s->compress);
3614 s->compress = NULL;
0f113f3e
MC		 3615#endif
3616}
d02b48c6 3617
0821bcd4 3618X509 *SSL_get_certificate(const SSL *s)
0f113f3e
MC		 3619{
3620 if (s->cert != NULL)
26a7d938 3621 return s->cert->key->x509;
0f113f3e 3622 else
26a7d938 3623 return NULL;
0f113f3e 3624}
d02b48c6 3625
a25f9adc 3626EVP_PKEY *SSL_get_privatekey(const SSL *s)
0f113f3e
MC		 3627{
3628 if (s->cert != NULL)
26a7d938 3629 return s->cert->key->privatekey;
0f113f3e 3630 else
26a7d938 3631 return NULL;
0f113f3e 3632}
d02b48c6 3633
a25f9adc 3634X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
0f113f3e
MC		 3635{
3636 if (ctx->cert != NULL)
3637 return ctx->cert->key->x509;
3638 else
3639 return NULL;
3640}
a25f9adc
DSH		 3641
3642EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
0f113f3e
MC		 3643{
3644 if (ctx->cert != NULL)
3645 return ctx->cert->key->privatekey;
3646 else
3647 return NULL;
3648}
a25f9adc 3649
babb3798 3650const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
0f113f3e
MC		 3651{
3652 if ((s->session != NULL) && (s->session->cipher != NULL))
26a7d938
K		 3653 return s->session->cipher;
3654 return NULL;
0f113f3e
MC		 3655}
3656
0aed6e44
BK		 3657const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3658{
3659 return s->s3->tmp.new_cipher;
3660}
3661
377dcdba 3662const COMP_METHOD *SSL_get_current_compression(SSL *s)
0f113f3e 3663{
9a555706
RS		 3664#ifndef OPENSSL_NO_COMP
3665 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3666#else
3667 return NULL;
3668#endif
0f113f3e 3669}
377dcdba
RL		 3670
3671const COMP_METHOD *SSL_get_current_expansion(SSL *s)
0f113f3e 3672{
9a555706
RS		 3673#ifndef OPENSSL_NO_COMP
3674 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3675#else
3676 return NULL;
0f113f3e 3677#endif
9a555706 3678}
0f113f3e 3679
46417569 3680int ssl_init_wbio_buffer(SSL *s)
0f113f3e
MC		 3681{
3682 BIO *bbio;
3683
2e7dc7cd
MC		 3684 if (s->bbio != NULL) {
3685 /* Already buffered. */
3686 return 1;
0f113f3e 3687 }
46417569 3688
2e7dc7cd
MC		 3689 bbio = BIO_new(BIO_f_buffer());
3690 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3691 BIO_free(bbio);
0f113f3e 3692 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
46417569 3693 return 0;
0f113f3e 3694 }
2e7dc7cd
MC		 3695 s->bbio = bbio;
3696 s->wbio = BIO_push(bbio, s->wbio);
46417569
MC		 3697
3698 return 1;
0f113f3e 3699}
413c4f45 3700
b77f3ed1 3701int ssl_free_wbio_buffer(SSL *s)
0f113f3e 3702{
62adbcee 3703 /* callers ensure s is never null */
0f113f3e 3704 if (s->bbio == NULL)
b77f3ed1 3705 return 1;
0f113f3e 3706
2e7dc7cd 3707 s->wbio = BIO_pop(s->wbio);
b77f3ed1
MC		 3708 if (!ossl_assert(s->wbio != NULL))
3709 return 0;
0f113f3e
MC		 3710 BIO_free(s->bbio);
3711 s->bbio = NULL;
b77f3ed1
MC		 3712
3713 return 1;
0f113f3e
MC		 3714}
3715
3716void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3717{
3718 ctx->quiet_shutdown = mode;
3719}
58964a49 3720
0821bcd4 3721int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
0f113f3e 3722{
26a7d938 3723 return ctx->quiet_shutdown;
0f113f3e 3724}
58964a49 3725
0f113f3e
MC		 3726void SSL_set_quiet_shutdown(SSL *s, int mode)
3727{
3728 s->quiet_shutdown = mode;
3729}
58964a49 3730
0821bcd4 3731int SSL_get_quiet_shutdown(const SSL *s)
0f113f3e 3732{
26a7d938 3733 return s->quiet_shutdown;
0f113f3e 3734}
58964a49 3735
0f113f3e
MC		 3736void SSL_set_shutdown(SSL *s, int mode)
3737{
3738 s->shutdown = mode;
3739}
58964a49 3740
0821bcd4 3741int SSL_get_shutdown(const SSL *s)
0f113f3e 3742{
6546e9b2 3743 return s->shutdown;
0f113f3e 3744}
58964a49 3745
0821bcd4 3746int SSL_version(const SSL *s)
0f113f3e 3747{
6546e9b2
AG		 3748 return s->version;
3749}
3750
3751int SSL_client_version(const SSL *s)
3752{
3753 return s->client_version;
0f113f3e 3754}
58964a49 3755
0821bcd4 3756SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
0f113f3e 3757{
6546e9b2 3758 return ssl->ctx;
0f113f3e
MC		 3759}
3760
3761SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
3762{
24a0d393 3763 CERT *new_cert;
0f113f3e
MC		 3764 if (ssl->ctx == ctx)
3765 return ssl->ctx;
0f113f3e 3766 if (ctx == NULL)
222da979 3767 ctx = ssl->session_ctx;
24a0d393
KR		 3768 new_cert = ssl_cert_dup(ctx->cert);
3769 if (new_cert == NULL) {
3770 return NULL;
0f113f3e 3771 }
21181889
MC		 3772
3773 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
3774 ssl_cert_free(new_cert);
3775 return NULL;
3776 }
3777
24a0d393
KR		 3778 ssl_cert_free(ssl->cert);
3779 ssl->cert = new_cert;
0f113f3e
MC		 3780
3781 /*
3782 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
3783 * so setter APIs must prevent invalid lengths from entering the system.
3784 */
380a522f
MC		 3785 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
3786 return NULL;
0f113f3e
MC		 3787
3788 /*
3789 * If the session ID context matches that of the parent SSL_CTX,
3790 * inherit it from the new SSL_CTX as well. If however the context does
3791 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
3792 * leave it unchanged.
3793 */
3794 if ((ssl->ctx != NULL) &&
3795 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
3796 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
3797 ssl->sid_ctx_length = ctx->sid_ctx_length;
3798 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
3799 }
3800
16203f7b 3801 SSL_CTX_up_ref(ctx);
a230b26e 3802 SSL_CTX_free(ssl->ctx); /* decrement reference count */
0f113f3e
MC		 3803 ssl->ctx = ctx;
3804
16203f7b 3805 return ssl->ctx;
0f113f3e 3806}
ed3883d2 3807
4f43d0e7 3808int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
0f113f3e 3809{
26a7d938 3810 return X509_STORE_set_default_paths(ctx->cert_store);
0f113f3e 3811}
58964a49 3812
d84a7b20
MC		 3813int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
3814{
3815 X509_LOOKUP *lookup;
3816
3817 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
3818 if (lookup == NULL)
3819 return 0;
3820 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
3821
3822 /* Clear any errors if the default directory does not exist */
3823 ERR_clear_error();
3824
3825 return 1;
3826}
3827
3828int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
3829{
3830 X509_LOOKUP *lookup;
3831
3832 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
3833 if (lookup == NULL)
3834 return 0;
3835
3836 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
3837
3838 /* Clear any errors if the default file does not exist */
3839 ERR_clear_error();
3840
3841 return 1;
3842}
3843
303c0028 3844int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
0f113f3e
MC		 3845 const char *CApath)
3846{
26a7d938 3847 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
0f113f3e 3848}
58964a49 3849
45d87a1f 3850void SSL_set_info_callback(SSL *ssl,
0f113f3e
MC		 3851 void (*cb) (const SSL *ssl, int type, int val))
3852{
3853 ssl->info_callback = cb;
3854}
3855
3856/*
3857 * One compiler (Diab DCC) doesn't like argument names in returned function
3858 * pointer.
3859 */
3860void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
3861 int /* type */ ,
3862 int /* val */ ) {
3863 return ssl->info_callback;
3864}
58964a49 3865
0f113f3e
MC		 3866void SSL_set_verify_result(SSL *ssl, long arg)
3867{
3868 ssl->verify_result = arg;
3869}
58964a49 3870
0821bcd4 3871long SSL_get_verify_result(const SSL *ssl)
0f113f3e 3872{
26a7d938 3873 return ssl->verify_result;
0f113f3e
MC		 3874}
3875
d9f1c639 3876size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3877{
6b8f5d0d 3878 if (outlen == 0)
858618e7
NM		 3879 return sizeof(ssl->s3->client_random);
3880 if (outlen > sizeof(ssl->s3->client_random))
3881 outlen = sizeof(ssl->s3->client_random);
3882 memcpy(out, ssl->s3->client_random, outlen);
d9f1c639 3883 return outlen;
858618e7
NM		 3884}
3885
d9f1c639 3886size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
858618e7 3887{
6b8f5d0d 3888 if (outlen == 0)
858618e7
NM		 3889 return sizeof(ssl->s3->server_random);
3890 if (outlen > sizeof(ssl->s3->server_random))
3891 outlen = sizeof(ssl->s3->server_random);
3892 memcpy(out, ssl->s3->server_random, outlen);
d9f1c639 3893 return outlen;
858618e7
NM		 3894}
3895
d9f1c639 3896size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
a230b26e 3897 unsigned char *out, size_t outlen)
858618e7 3898{
d9f1c639
MC		 3899 if (outlen == 0)
3900 return session->master_key_length;
8c1a5343 3901 if (outlen > session->master_key_length)
858618e7
NM		 3902 outlen = session->master_key_length;
3903 memcpy(out, session->master_key, outlen);
d9f1c639 3904 return outlen;
858618e7
NM		 3905}
3906
725b0f1e 3907int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
911d63f2
MC		 3908 size_t len)
3909{
3910 if (len > sizeof(sess->master_key))
3911 return 0;
3912
3913 memcpy(sess->master_key, in, len);
3914 sess->master_key_length = len;
911d63f2
MC		 3915 return 1;
3916}
3917
3918
0f113f3e
MC		 3919int SSL_set_ex_data(SSL *s, int idx, void *arg)
3920{
26a7d938 3921 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 3922}
3923
3924void *SSL_get_ex_data(const SSL *s, int idx)
3925{
26a7d938 3926 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e
MC		 3927}
3928
0f113f3e
MC		 3929int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
3930{
26a7d938 3931 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
0f113f3e
MC		 3932}
3933
3934void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
3935{
26a7d938 3936 return CRYPTO_get_ex_data(&s->ex_data, idx);
0f113f3e 3937}
58964a49 3938
0821bcd4 3939X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
0f113f3e 3940{
26a7d938 3941 return ctx->cert_store;
0f113f3e 3942}
413c4f45 3943
0f113f3e
MC		 3944void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
3945{
222561fe 3946 X509_STORE_free(ctx->cert_store);
0f113f3e
MC		 3947 ctx->cert_store = store;
3948}
413c4f45 3949
b50052db
TS		 3950void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
3951{
3952 if (store != NULL)
3953 X509_STORE_up_ref(store);
3954 SSL_CTX_set_cert_store(ctx, store);
3955}
3956
0821bcd4 3957int SSL_want(const SSL *s)
0f113f3e 3958{
26a7d938 3959 return s->rwstate;
0f113f3e 3960}
413c4f45 3961
0f113f3e 3962/**
4f43d0e7
BL		 3963 * \brief Set the callback for generating temporary DH keys.
3964 * \param ctx the SSL context.
3965 * \param dh the callback
3966 */
3967
bc36ee62 3968#ifndef OPENSSL_NO_DH
0f113f3e
MC		 3969void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
3970 DH *(*dh) (SSL *ssl, int is_export,
3971 int keylength))
3972{
3973 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3974}
f8c3c05d 3975
0f113f3e
MC		 3976void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
3977 int keylength))
3978{
3979 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
3980}
79df9d62 3981#endif
15d21c2d 3982
ddac1974
NL		 3983#ifndef OPENSSL_NO_PSK
3984int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
0f113f3e
MC		 3985{
3986 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
a230b26e 3987 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
0f113f3e
MC		 3988 return 0;
3989 }
df6da24b 3990 OPENSSL_free(ctx->cert->psk_identity_hint);
0f113f3e 3991 if (identity_hint != NULL) {
7644a9ae 3992 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 3993 if (ctx->cert->psk_identity_hint == NULL)
0f113f3e
MC		 3994 return 0;
3995 } else
df6da24b 3996 ctx->cert->psk_identity_hint = NULL;
0f113f3e
MC		 3997 return 1;
3998}
ddac1974
NL		 3999
4000int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
0f113f3e
MC		 4001{
4002 if (s == NULL)
4003 return 0;
4004
0f113f3e
MC		 4005 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4006 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4007 return 0;
4008 }
df6da24b 4009 OPENSSL_free(s->cert->psk_identity_hint);
0f113f3e 4010 if (identity_hint != NULL) {
7644a9ae 4011 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
df6da24b 4012 if (s->cert->psk_identity_hint == NULL)
0f113f3e
MC		 4013 return 0;
4014 } else
df6da24b 4015 s->cert->psk_identity_hint = NULL;
0f113f3e
MC		 4016 return 1;
4017}
ddac1974
NL		 4018
4019const char *SSL_get_psk_identity_hint(const SSL *s)
0f113f3e
MC		 4020{
4021 if (s == NULL || s->session == NULL)
4022 return NULL;
26a7d938 4023 return s->session->psk_identity_hint;
0f113f3e 4024}
ddac1974
NL		 4025
4026const char *SSL_get_psk_identity(const SSL *s)
0f113f3e
MC		 4027{
4028 if (s == NULL || s->session == NULL)
4029 return NULL;
26a7d938 4030 return s->session->psk_identity;
0f113f3e 4031}
7806f3dd 4032
8cbfcc70 4033void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4034{
4035 s->psk_client_callback = cb;
4036}
7806f3dd 4037
8cbfcc70 4038void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
0f113f3e
MC		 4039{
4040 ctx->psk_client_callback = cb;
4041}
7806f3dd 4042
8cbfcc70 4043void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4044{
4045 s->psk_server_callback = cb;
4046}
7806f3dd 4047
8cbfcc70 4048void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
0f113f3e
MC		 4049{
4050 ctx->psk_server_callback = cb;
4051}
4052#endif
4053
f46184bd
MC		 4054void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4055{
4056 s->psk_find_session_cb = cb;
4057}
4058
4059void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4060 SSL_psk_find_session_cb_func cb)
4061{
4062 ctx->psk_find_session_cb = cb;
4063}
4064
4065void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4066{
4067 s->psk_use_session_cb = cb;
4068}
4069
4070void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4071 SSL_psk_use_session_cb_func cb)
4072{
4073 ctx->psk_use_session_cb = cb;
4074}
4075
0f113f3e
MC		 4076void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4077 void (*cb) (int write_p, int version,
4078 int content_type, const void *buf,
4079 size_t len, SSL *ssl, void *arg))
4080{
4081 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4082}
4083
4084void SSL_set_msg_callback(SSL *ssl,
4085 void (*cb) (int write_p, int version,
4086 int content_type, const void *buf,
4087 size_t len, SSL *ssl, void *arg))
4088{
4089 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4090}
a661b653 4091
7c2d4fee 4092void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
0f113f3e
MC		 4093 int (*cb) (SSL *ssl,
4094 int
4095 is_forward_secure))
4096{
4097 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4098 (void (*)(void))cb);
4099}
4100
7c2d4fee 4101void SSL_set_not_resumable_session_callback(SSL *ssl,
0f113f3e
MC		 4102 int (*cb) (SSL *ssl,
4103 int is_forward_secure))
4104{
4105 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4106 (void (*)(void))cb);
4107}
4108
c649d10d
TS		 4109void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4110 size_t (*cb) (SSL *ssl, int type,
4111 size_t len, void *arg))
4112{
4113 ctx->record_padding_cb = cb;
4114}
4115
4116void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4117{
4118 ctx->record_padding_arg = arg;
4119}
4120
4121void *SSL_CTX_get_record_padding_callback_arg(SSL_CTX *ctx)
4122{
4123 return ctx->record_padding_arg;
4124}
4125
4126int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4127{
4128 /* block size of 0 or 1 is basically no padding */
4129 if (block_size == 1)
4130 ctx->block_padding = 0;
4131 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4132 ctx->block_padding = block_size;
4133 else
4134 return 0;
4135 return 1;
4136}
4137
4138void SSL_set_record_padding_callback(SSL *ssl,
4139 size_t (*cb) (SSL *ssl, int type,
4140 size_t len, void *arg))
4141{
4142 ssl->record_padding_cb = cb;
4143}
4144
4145void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4146{
4147 ssl->record_padding_arg = arg;
4148}
4149
4150void *SSL_get_record_padding_callback_arg(SSL *ssl)
4151{
4152 return ssl->record_padding_arg;
4153}
4154
4155int SSL_set_block_padding(SSL *ssl, size_t block_size)
4156{
4157 /* block size of 0 or 1 is basically no padding */
4158 if (block_size == 1)
4159 ssl->block_padding = 0;
4160 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4161 ssl->block_padding = block_size;
4162 else
4163 return 0;
4164 return 1;
4165}
4166
0f113f3e
MC		 4167/*
4168 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
8483a003 4169 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
69687aa8 4170 * If EVP_MD pointer is passed, initializes ctx with this |md|.
48722ff5 4171 * Returns the newly allocated ctx;
8671b898 4172 */
b948e2c5 4173
0f113f3e 4174EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
b948e2c5 4175{
0f113f3e 4176 ssl_clear_hash_ctx(hash);
bfb0641f 4177 *hash = EVP_MD_CTX_new();
5f3d93e4 4178 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
bfb0641f 4179 EVP_MD_CTX_free(*hash);
5f3d93e4
MC		 4180 *hash = NULL;
4181 return NULL;
4182 }
0f113f3e 4183 return *hash;
b948e2c5 4184}
0f113f3e
MC		 4185
4186void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
b948e2c5
DSH		 4187{
4188
0d9824c1 4189 EVP_MD_CTX_free(*hash);
0f113f3e 4190 *hash = NULL;
b948e2c5 4191}
a661b653 4192
48fbcbac 4193/* Retrieve handshake hashes */
8c1a5343
MC		 4194int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4195 size_t *hashlen)
48fbcbac 4196{
6e59a892 4197 EVP_MD_CTX *ctx = NULL;
28ba2541 4198 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
8c1a5343
MC		 4199 int hashleni = EVP_MD_CTX_size(hdgst);
4200 int ret = 0;
4201
4202 if (hashleni < 0 || (size_t)hashleni > outlen)
28ba2541 4203 goto err;
8c1a5343 4204
bfb0641f 4205 ctx = EVP_MD_CTX_new();
8c1a5343 4206 if (ctx == NULL)
6e59a892 4207 goto err;
8c1a5343 4208
6e59a892
RL		 4209 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4210 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0)
8c1a5343
MC		 4211 goto err;
4212
4213 *hashlen = hashleni;
4214
4215 ret = 1;
48fbcbac 4216 err:
bfb0641f 4217 EVP_MD_CTX_free(ctx);
48fbcbac
DSH		 4218 return ret;
4219}
4220
b577fd0b 4221int SSL_session_reused(SSL *s)
0f113f3e
MC		 4222{
4223 return s->hit;
4224}
08557cf2 4225
69443116 4226int SSL_is_server(const SSL *s)
0f113f3e
MC		 4227{
4228 return s->server;
4229}
87adf1fa 4230
47153c72
RS		 4231#if OPENSSL_API_COMPAT < 0x10100000L
4232void SSL_set_debug(SSL *s, int debug)
4233{
4234 /* Old function was do-nothing anyway... */
4235 (void)s;
4236 (void)debug;
4237}
4238#endif
4239
b362ccab 4240void SSL_set_security_level(SSL *s, int level)
0f113f3e
MC		 4241{
4242 s->cert->sec_level = level;
4243}
b362ccab
DSH		 4244
4245int SSL_get_security_level(const SSL *s)
0f113f3e
MC		 4246{
4247 return s->cert->sec_level;
4248}
b362ccab 4249
0f113f3e 4250void SSL_set_security_callback(SSL *s,
a230b26e
EK		 4251 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4252 int op, int bits, int nid,
4253 void *other, void *ex))
0f113f3e
MC		 4254{
4255 s->cert->sec_cb = cb;
4256}
b362ccab 4257
a230b26e
EK		 4258int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4259 const SSL_CTX *ctx, int op,
4260 int bits, int nid, void *other,
4261 void *ex) {
0f113f3e
MC		 4262 return s->cert->sec_cb;
4263}
b362ccab
DSH		 4264
4265void SSL_set0_security_ex_data(SSL *s, void *ex)
0f113f3e
MC		 4266{
4267 s->cert->sec_ex = ex;
4268}
b362ccab
DSH		 4269
4270void *SSL_get0_security_ex_data(const SSL *s)
0f113f3e
MC		 4271{
4272 return s->cert->sec_ex;
4273}
b362ccab
DSH		 4274
4275void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
0f113f3e
MC		 4276{
4277 ctx->cert->sec_level = level;
4278}
b362ccab
DSH		 4279
4280int SSL_CTX_get_security_level(const SSL_CTX *ctx)
0f113f3e
MC		 4281{
4282 return ctx->cert->sec_level;
4283}
b362ccab 4284
0f113f3e 4285void SSL_CTX_set_security_callback(SSL_CTX *ctx,
a230b26e
EK		 4286 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4287 int op, int bits, int nid,
4288 void *other, void *ex))
0f113f3e
MC		 4289{
4290 ctx->cert->sec_cb = cb;
4291}
b362ccab 4292
e4646a89
KR		 4293int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4294 const SSL_CTX *ctx,
0f113f3e
MC		 4295 int op, int bits,
4296 int nid,
4297 void *other,
4298 void *ex) {
4299 return ctx->cert->sec_cb;
4300}
b362ccab
DSH		 4301
4302void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
0f113f3e
MC		 4303{
4304 ctx->cert->sec_ex = ex;
4305}
b362ccab
DSH		 4306
4307void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
0f113f3e
MC		 4308{
4309 return ctx->cert->sec_ex;
4310}
b362ccab 4311
8106cb8b
VD		 4312/*
4313 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4314 * can return unsigned long, instead of the generic long return value from the
4315 * control interface.
4316 */
4317unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4318{
4319 return ctx->options;
4320}
a230b26e
EK		 4321
4322unsigned long SSL_get_options(const SSL *s)
8106cb8b
VD		 4323{
4324 return s->options;
4325}
a230b26e 4326
8106cb8b
VD		 4327unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4328{
4329 return ctx->options |= op;
4330}
a230b26e 4331
8106cb8b
VD		 4332unsigned long SSL_set_options(SSL *s, unsigned long op)
4333{
4334 return s->options |= op;
4335}
a230b26e 4336
8106cb8b
VD		 4337unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4338{
4339 return ctx->options &= ~op;
4340}
a230b26e 4341
8106cb8b
VD		 4342unsigned long SSL_clear_options(SSL *s, unsigned long op)
4343{
4344 return s->options &= ~op;
4345}
4346
696178ed
DSH		 4347STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4348{
4349 return s->verified_chain;
4350}
4351
0f113f3e 4352IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
ed29e82a
RP		 4353
4354#ifndef OPENSSL_NO_CT
4355
4356/*
4357 * Moves SCTs from the |src| stack to the |dst| stack.
4358 * The source of each SCT will be set to |origin|.
4359 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4360 * the caller.
4361 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4362 */
a230b26e
EK		 4363static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4364 sct_source_t origin)
ed29e82a
RP		 4365{
4366 int scts_moved = 0;
4367 SCT *sct = NULL;
4368
4369 if (*dst == NULL) {
4370 *dst = sk_SCT_new_null();
4371 if (*dst == NULL) {
4372 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4373 goto err;
4374 }
4375 }
4376
4377 while ((sct = sk_SCT_pop(src)) != NULL) {
4378 if (SCT_set_source(sct, origin) != 1)
4379 goto err;
4380
4381 if (sk_SCT_push(*dst, sct) <= 0)
4382 goto err;
4383 scts_moved += 1;
4384 }
4385
4386 return scts_moved;
a230b26e 4387 err:
ed29e82a 4388 if (sct != NULL)
a230b26e 4389 sk_SCT_push(src, sct); /* Put the SCT back */
cc7113e8 4390 return -1;
ed29e82a
RP		 4391}
4392
4393/*
a230b26e 4394 * Look for data collected during ServerHello and parse if found.
6b13bd1d 4395 * Returns the number of SCTs extracted.
a230b26e 4396 */
ed29e82a
RP		 4397static int ct_extract_tls_extension_scts(SSL *s)
4398{
4399 int scts_extracted = 0;
4400
aff8c126
RS		 4401 if (s->ext.scts != NULL) {
4402 const unsigned char *p = s->ext.scts;
4403 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
ed29e82a
RP		 4404
4405 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4406
4407 SCT_LIST_free(scts);
4408 }
4409
4410 return scts_extracted;
4411}
4412
4413/*
4414 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4415 * contains an SCT X509 extension. They will be stored in |s->scts|.
4416 * Returns:
4417 * - The number of SCTs extracted, assuming an OCSP response exists.
4418 * - 0 if no OCSP response exists or it contains no SCTs.
4419 * - A negative integer if an error occurs.
4420 */
4421static int ct_extract_ocsp_response_scts(SSL *s)
4422{
a230b26e 4423# ifndef OPENSSL_NO_OCSP
ed29e82a
RP		 4424 int scts_extracted = 0;
4425 const unsigned char *p;
4426 OCSP_BASICRESP *br = NULL;
4427 OCSP_RESPONSE *rsp = NULL;
4428 STACK_OF(SCT) *scts = NULL;
4429 int i;
4430
aff8c126 4431 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
ed29e82a
RP		 4432 goto err;
4433
aff8c126
RS		 4434 p = s->ext.ocsp.resp;
4435 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
ed29e82a
RP		 4436 if (rsp == NULL)
4437 goto err;
4438
4439 br = OCSP_response_get1_basic(rsp);
4440 if (br == NULL)
4441 goto err;
4442
4443 for (i = 0; i < OCSP_resp_count(br); ++i) {
4444 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4445
4446 if (single == NULL)
4447 continue;
4448
a230b26e
EK		 4449 scts =
4450 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4451 scts_extracted =
4452 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
ed29e82a
RP		 4453 if (scts_extracted < 0)
4454 goto err;
4455 }
a230b26e 4456 err:
ed29e82a
RP		 4457 SCT_LIST_free(scts);
4458 OCSP_BASICRESP_free(br);
4459 OCSP_RESPONSE_free(rsp);
4460 return scts_extracted;
a230b26e 4461# else
3e41ac35
MC		 4462 /* Behave as if no OCSP response exists */
4463 return 0;
a230b26e 4464# endif
ed29e82a
RP		 4465}
4466
4467/*
4468 * Attempts to extract SCTs from the peer certificate.
4469 * Return the number of SCTs extracted, or a negative integer if an error
4470 * occurs.
4471 */
4472static int ct_extract_x509v3_extension_scts(SSL *s)
4473{
4474 int scts_extracted = 0;
3f3c7d26 4475 X509 *cert = s->session != NULL ? s->session->peer : NULL;
ed29e82a
RP		 4476
4477 if (cert != NULL) {
4478 STACK_OF(SCT) *scts =
4479 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4480
4481 scts_extracted =
4482 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4483
4484 SCT_LIST_free(scts);
4485 }
4486
4487 return scts_extracted;
4488}
4489
4490/*
4491 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4492 * response (if it exists) and X509v3 extensions in the certificate.
4493 * Returns NULL if an error occurs.
4494 */
4495const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4496{
4497 if (!s->scts_parsed) {
4498 if (ct_extract_tls_extension_scts(s) < 0 ||
4499 ct_extract_ocsp_response_scts(s) < 0 ||
4500 ct_extract_x509v3_extension_scts(s) < 0)
4501 goto err;
4502
4503 s->scts_parsed = 1;
4504 }
4505 return s->scts;
a230b26e 4506 err:
ed29e82a
RP		 4507 return NULL;
4508}
4509
a230b26e 4510static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
43341433 4511 const STACK_OF(SCT) *scts, void *unused_arg)
ed29e82a 4512{
43341433
VD		 4513 return 1;
4514}
4515
a230b26e 4516static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
43341433
VD		 4517 const STACK_OF(SCT) *scts, void *unused_arg)
4518{
4519 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4520 int i;
ed29e82a 4521
43341433
VD		 4522 for (i = 0; i < count; ++i) {
4523 SCT *sct = sk_SCT_value(scts, i);
4524 int status = SCT_get_validation_status(sct);
4525
4526 if (status == SCT_VALIDATION_STATUS_VALID)
4527 return 1;
4528 }
4529 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4530 return 0;
4531}
4532
4533int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4534 void *arg)
4535{
ed29e82a
RP		 4536 /*
4537 * Since code exists that uses the custom extension handler for CT, look
4538 * for this and throw an error if they have already registered to use CT.
4539 */
4540 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
a230b26e
EK		 4541 TLSEXT_TYPE_signed_certificate_timestamp))
4542 {
ed29e82a
RP		 4543 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4544 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4545 return 0;
ed29e82a
RP		 4546 }
4547
ed29e82a 4548 if (callback != NULL) {
a230b26e
EK		 4549 /*
4550 * If we are validating CT, then we MUST accept SCTs served via OCSP
4551 */
ed29e82a 4552 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
43341433 4553 return 0;
ed29e82a
RP		 4554 }
4555
43341433
VD		 4556 s->ct_validation_callback = callback;
4557 s->ct_validation_callback_arg = arg;
4558
4559 return 1;
ed29e82a
RP		 4560}
4561
43341433 4562int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
a230b26e 4563 ssl_ct_validation_cb callback, void *arg)
ed29e82a 4564{
ed29e82a
RP		 4565 /*
4566 * Since code exists that uses the custom extension handler for CT, look for
4567 * this and throw an error if they have already registered to use CT.
4568 */
4569 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
a230b26e
EK		 4570 TLSEXT_TYPE_signed_certificate_timestamp))
4571 {
ed29e82a
RP		 4572 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4573 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
43341433 4574 return 0;
ed29e82a
RP		 4575 }
4576
4577 ctx->ct_validation_callback = callback;
4578 ctx->ct_validation_callback_arg = arg;
43341433 4579 return 1;
ed29e82a
RP		 4580}
4581
43341433 4582int SSL_ct_is_enabled(const SSL *s)
ed29e82a 4583{
43341433 4584 return s->ct_validation_callback != NULL;
ed29e82a
RP		 4585}
4586
43341433 4587int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
ed29e82a 4588{
43341433 4589 return ctx->ct_validation_callback != NULL;
ed29e82a
RP		 4590}
4591
4d482ee2 4592int ssl_validate_ct(SSL *s)
ed29e82a
RP		 4593{
4594 int ret = 0;
3f3c7d26 4595 X509 *cert = s->session != NULL ? s->session->peer : NULL;
43341433 4596 X509 *issuer;
b9aec69a 4597 SSL_DANE *dane = &s->dane;
ed29e82a
RP		 4598 CT_POLICY_EVAL_CTX *ctx = NULL;
4599 const STACK_OF(SCT) *scts;
4600
43341433
VD		 4601 /*
4602 * If no callback is set, the peer is anonymous, or its chain is invalid,
4603 * skip SCT validation - just return success. Applications that continue
4604 * handshakes without certificates, with unverified chains, or pinned leaf
4605 * certificates are outside the scope of the WebPKI and CT.
4606 *
4607 * The above exclusions notwithstanding the vast majority of peers will
4608 * have rather ordinary certificate chains validated by typical
4609 * applications that perform certificate verification and therefore will
4610 * process SCTs when enabled.
4611 */
4612 if (s->ct_validation_callback == NULL || cert == NULL ||
4613 s->verify_result != X509_V_OK ||
a230b26e 4614 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
ed29e82a
RP		 4615 return 1;
4616
43341433
VD		 4617 /*
4618 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4619 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4620 */
4621 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4622 switch (dane->mtlsa->usage) {
4623 case DANETLS_USAGE_DANE_TA:
4624 case DANETLS_USAGE_DANE_EE:
4625 return 1;
4626 }
ed29e82a
RP		 4627 }
4628
ed29e82a
RP		 4629 ctx = CT_POLICY_EVAL_CTX_new();
4630 if (ctx == NULL) {
4631 SSLerr(SSL_F_SSL_VALIDATE_CT, ERR_R_MALLOC_FAILURE);
4632 goto end;
4633 }
4634
43341433 4635 issuer = sk_X509_value(s->verified_chain, 1);
a1bb7708
RP		 4636 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4637 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4638 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
6a71e06d
RP		 4639 CT_POLICY_EVAL_CTX_set_time(
4640 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
ed29e82a
RP		 4641
4642 scts = SSL_get0_peer_scts(s);
4643
43341433
VD		 4644 /*
4645 * This function returns success (> 0) only when all the SCTs are valid, 0
4646 * when some are invalid, and < 0 on various internal errors (out of
4647 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4648 * reason to abort the handshake, that decision is up to the callback.
4649 * Therefore, we error out only in the unexpected case that the return
4650 * value is negative.
4651 *
4652 * XXX: One might well argue that the return value of this function is an
f430ba31 4653 * unfortunate design choice. Its job is only to determine the validation
43341433
VD		 4654 * status of each of the provided SCTs. So long as it correctly separates
4655 * the wheat from the chaff it should return success. Failure in this case
4656 * ought to correspond to an inability to carry out its duties.
4657 */
4658 if (SCT_LIST_validate(scts, ctx) < 0) {
ed29e82a
RP		 4659 SSLerr(SSL_F_SSL_VALIDATE_CT, SSL_R_SCT_VERIFICATION_FAILED);
4660 goto end;
4661 }
4662
4663 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4664 if (ret < 0)
a230b26e 4665 ret = 0; /* This function returns 0 on failure */
ed29e82a 4666
a230b26e 4667 end:
ed29e82a 4668 CT_POLICY_EVAL_CTX_free(ctx);
f75b34c8
VD		 4669 /*
4670 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4671 * failure return code here. Also the application may wish the complete
4672 * the handshake, and then disconnect cleanly at a higher layer, after
4673 * checking the verification status of the completed connection.
4674 *
4675 * We therefore force a certificate verification failure which will be
4676 * visible via SSL_get_verify_result() and cached as part of any resumed
4677 * session.
4678 *
4679 * Note: the permissive callback is for information gathering only, always
4680 * returns success, and does not affect verification status. Only the
4681 * strict callback or a custom application-specified callback can trigger
4682 * connection failure or record a verification error.
4683 */
4684 if (ret <= 0)
4685 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
ed29e82a
RP		 4686 return ret;
4687}
4688
43341433
VD		 4689int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
4690{
4691 switch (validation_mode) {
4692 default:
4693 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4694 return 0;
4695 case SSL_CT_VALIDATION_PERMISSIVE:
4696 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
4697 case SSL_CT_VALIDATION_STRICT:
4698 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
4699 }
4700}
4701
4702int SSL_enable_ct(SSL *s, int validation_mode)
4703{
4704 switch (validation_mode) {
4705 default:
4706 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
4707 return 0;
4708 case SSL_CT_VALIDATION_PERMISSIVE:
4709 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
4710 case SSL_CT_VALIDATION_STRICT:
4711 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
4712 }
4713}
4714
ed29e82a
RP		 4715int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
4716{
328f36c5 4717 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
ed29e82a
RP		 4718}
4719
4720int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
4721{
4722 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
4723}
4724
a230b26e 4725void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
8359b57f
RP		 4726{
4727 CTLOG_STORE_free(ctx->ctlog_store);
4728 ctx->ctlog_store = logs;
4729}
4730
4731const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
4732{
4733 return ctx->ctlog_store;
4734}
4735
6b1bb98f
BK		 4736#endif /* OPENSSL_NO_CT */
4737
a9c0d8be
DB		 4738void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
4739 void *arg)
6b1bb98f 4740{
a9c0d8be
DB		 4741 c->client_hello_cb = cb;
4742 c->client_hello_cb_arg = arg;
6b1bb98f
BK		 4743}
4744
a9c0d8be 4745int SSL_client_hello_isv2(SSL *s)
6b1bb98f
BK		 4746{
4747 if (s->clienthello == NULL)
4748 return 0;
4749 return s->clienthello->isv2;
4750}
4751
a9c0d8be 4752unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6b1bb98f
BK		 4753{
4754 if (s->clienthello == NULL)
4755 return 0;
4756 return s->clienthello->legacy_version;
4757}
4758
a9c0d8be 4759size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4760{
4761 if (s->clienthello == NULL)
4762 return 0;
4763 if (out != NULL)
4764 *out = s->clienthello->random;
4765 return SSL3_RANDOM_SIZE;
4766}
4767
a9c0d8be 4768size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4769{
4770 if (s->clienthello == NULL)
4771 return 0;
4772 if (out != NULL)
4773 *out = s->clienthello->session_id;
4774 return s->clienthello->session_id_len;
4775}
4776
a9c0d8be 4777size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4778{
4779 if (s->clienthello == NULL)
4780 return 0;
4781 if (out != NULL)
4782 *out = PACKET_data(&s->clienthello->ciphersuites);
4783 return PACKET_remaining(&s->clienthello->ciphersuites);
4784}
4785
a9c0d8be 4786size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6b1bb98f
BK		 4787{
4788 if (s->clienthello == NULL)
4789 return 0;
4790 if (out != NULL)
4791 *out = s->clienthello->compressions;
4792 return s->clienthello->compressions_len;
4793}
4794
a9c0d8be 4795int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
193b5d76
BK		 4796{
4797 RAW_EXTENSION *ext;
4798 int *present;
4799 size_t num = 0, i;
4800
4801 if (s->clienthello == NULL || out == NULL || outlen == NULL)
4802 return 0;
4803 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4804 ext = s->clienthello->pre_proc_exts + i;
4805 if (ext->present)
4806 num++;
4807 }
4808 present = OPENSSL_malloc(sizeof(*present) * num);
4809 if (present == NULL)
4810 return 0;
4811 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
4812 ext = s->clienthello->pre_proc_exts + i;
4813 if (ext->present) {
4814 if (ext->received_order >= num)
4815 goto err;
4816 present[ext->received_order] = ext->type;
4817 }
4818 }
4819 *out = present;
4820 *outlen = num;
4821 return 1;
4822 err:
4823 OPENSSL_free(present);
4824 return 0;
4825}
4826
a9c0d8be 4827int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6b1bb98f
BK		 4828 size_t *outlen)
4829{
4830 size_t i;
4831 RAW_EXTENSION *r;
4832
4833 if (s->clienthello == NULL)
4834 return 0;
4835 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
4836 r = s->clienthello->pre_proc_exts + i;
4837 if (r->present && r->type == type) {
4838 if (out != NULL)
4839 *out = PACKET_data(&r->data);
4840 if (outlen != NULL)
4841 *outlen = PACKET_remaining(&r->data);
4842 return 1;
4843 }
4844 }
4845 return 0;
4846}
2faa1b48 4847
a58eb06d
TS		 4848int SSL_free_buffers(SSL *ssl)
4849{
4850 RECORD_LAYER *rl = &ssl->rlayer;
4851
4852 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
4853 return 0;
4854
4855 RECORD_LAYER_release(rl);
4856 return 1;
4857}
4858
4859int SSL_alloc_buffers(SSL *ssl)
4860{
4861 return ssl3_setup_buffers(ssl);
4862}
4863
2faa1b48
CB		 4864void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
4865{
4866 ctx->keylog_callback = cb;
4867}
4868
4869SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
4870{
4871 return ctx->keylog_callback;
4872}
4873
4874static int nss_keylog_int(const char *prefix,
4875 SSL *ssl,
4876 const uint8_t *parameter_1,
4877 size_t parameter_1_len,
4878 const uint8_t *parameter_2,
4879 size_t parameter_2_len)
4880{
4881 char *out = NULL;
4882 char *cursor = NULL;
4883 size_t out_len = 0;
4884 size_t i;
4885 size_t prefix_len;
4886
4887 if (ssl->ctx->keylog_callback == NULL) return 1;
4888
4889 /*
4890 * Our output buffer will contain the following strings, rendered with
4891 * space characters in between, terminated by a NULL character: first the
4892 * prefix, then the first parameter, then the second parameter. The
4893 * meaning of each parameter depends on the specific key material being
4894 * logged. Note that the first and second parameters are encoded in
4895 * hexadecimal, so we need a buffer that is twice their lengths.
4896 */
4897 prefix_len = strlen(prefix);
4898 out_len = prefix_len + (2*parameter_1_len) + (2*parameter_2_len) + 3;
4899 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
4900 SSLerr(SSL_F_NSS_KEYLOG_INT, ERR_R_MALLOC_FAILURE);
4901 return 0;
4902 }
4903
4904 strcpy(cursor, prefix);
4905 cursor += prefix_len;
4906 *cursor++ = ' ';
4907
4908 for (i = 0; i < parameter_1_len; i++) {
4909 sprintf(cursor, "%02x", parameter_1[i]);
4910 cursor += 2;
4911 }
4912 *cursor++ = ' ';
4913
4914 for (i = 0; i < parameter_2_len; i++) {
4915 sprintf(cursor, "%02x", parameter_2[i]);
4916 cursor += 2;
4917 }
4918 *cursor = '\0';
4919
4920 ssl->ctx->keylog_callback(ssl, (const char *)out);
4921 OPENSSL_free(out);
4922 return 1;
4923
4924}
4925
4926int ssl_log_rsa_client_key_exchange(SSL *ssl,
4927 const uint8_t *encrypted_premaster,
4928 size_t encrypted_premaster_len,
4929 const uint8_t *premaster,
4930 size_t premaster_len)
4931{
4932 if (encrypted_premaster_len < 8) {
4933 SSLerr(SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
4934 return 0;
4935 }
4936
f0deb4d3 4937 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
2faa1b48
CB		 4938 return nss_keylog_int("RSA",
4939 ssl,
4940 encrypted_premaster,
f0deb4d3 4941 8,
2faa1b48
CB		 4942 premaster,
4943 premaster_len);
4944}
4945
2c7bd692
CB		 4946int ssl_log_secret(SSL *ssl,
4947 const char *label,
4948 const uint8_t *secret,
4949 size_t secret_len)
2faa1b48 4950{
2c7bd692 4951 return nss_keylog_int(label,
2faa1b48 4952 ssl,
2c7bd692
CB		 4953 ssl->s3->client_random,
4954 SSL3_RANDOM_SIZE,
4955 secret,
4956 secret_len);
2faa1b48
CB		 4957}
4958
ccb8e6e0
BK		 4959#define SSLV2_CIPHER_LEN 3
4960
90134d98
BK		 4961int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format,
4962 int *al)
ccb8e6e0 4963{
ccb8e6e0 4964 int n;
ccb8e6e0
BK		 4965
4966 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
4967
4968 if (PACKET_remaining(cipher_suites) == 0) {
90134d98 4969 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST, SSL_R_NO_CIPHERS_SPECIFIED);
ccb8e6e0 4970 *al = SSL_AD_ILLEGAL_PARAMETER;
90134d98 4971 return 0;
ccb8e6e0
BK		 4972 }
4973
4974 if (PACKET_remaining(cipher_suites) % n != 0) {
90134d98 4975 SSLerr(SSL_F_SSL_CACHE_CIPHERLIST,
ccb8e6e0
BK		 4976 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
4977 *al = SSL_AD_DECODE_ERROR;
90134d98 4978 return 0;
ccb8e6e0
BK		 4979 }
4980
4981 OPENSSL_free(s->s3->tmp.ciphers_raw);
4982 s->s3->tmp.ciphers_raw = NULL;
4983 s->s3->tmp.ciphers_rawlen = 0;
4984
4985 if (sslv2format) {
4986 size_t numciphers = PACKET_remaining(cipher_suites) / n;
4987 PACKET sslv2ciphers = *cipher_suites;
4988 unsigned int leadbyte;
4989 unsigned char *raw;
4990
4991 /*
4992 * We store the raw ciphers list in SSLv3+ format so we need to do some
4993 * preprocessing to convert the list first. If there are any SSLv2 only
4994 * ciphersuites with a non-zero leading byte then we are going to
4995 * slightly over allocate because we won't store those. But that isn't a
4996 * problem.
4997 */
4998 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
4999 s->s3->tmp.ciphers_raw = raw;
5000 if (raw == NULL) {
5001 *al = SSL_AD_INTERNAL_ERROR;
5002 goto err;
5003 }
5004 for (s->s3->tmp.ciphers_rawlen = 0;
5005 PACKET_remaining(&sslv2ciphers) > 0;
5006 raw += TLS_CIPHER_LEN) {
5007 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5008 || (leadbyte == 0
5009 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5010 TLS_CIPHER_LEN))
5011 || (leadbyte != 0
5012 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
fb34a0f4 5013 *al = SSL_AD_DECODE_ERROR;
ccb8e6e0
BK		 5014 OPENSSL_free(s->s3->tmp.ciphers_raw);
5015 s->s3->tmp.ciphers_raw = NULL;
5016 s->s3->tmp.ciphers_rawlen = 0;
5017 goto err;
5018 }
5019 if (leadbyte == 0)
5020 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5021 }
5022 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5023 &s->s3->tmp.ciphers_rawlen)) {
5024 *al = SSL_AD_INTERNAL_ERROR;
5025 goto err;
5026 }
90134d98
BK		 5027 return 1;
5028 err:
5029 return 0;
5030}
5031
5032int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5033 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5034 STACK_OF(SSL_CIPHER) **scsvs)
5035{
5036 int alert;
5037 PACKET pkt;
5038
5039 if (!PACKET_buf_init(&pkt, bytes, len))
5040 return 0;
5041 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, &alert);
5042}
5043
5044int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5045 STACK_OF(SSL_CIPHER) **skp,
5046 STACK_OF(SSL_CIPHER) **scsvs_out,
5047 int sslv2format, int *al)
5048{
5049 const SSL_CIPHER *c;
5050 STACK_OF(SSL_CIPHER) *sk = NULL;
5051 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5052 int n;
5053 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5054 unsigned char cipher[SSLV2_CIPHER_LEN];
5055
5056 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5057
5058 if (PACKET_remaining(cipher_suites) == 0) {
5059 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5060 *al = SSL_AD_ILLEGAL_PARAMETER;
5061 return 0;
5062 }
5063
5064 if (PACKET_remaining(cipher_suites) % n != 0) {
5065 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5066 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5067 *al = SSL_AD_DECODE_ERROR;
5068 return 0;
5069 }
5070
5071 sk = sk_SSL_CIPHER_new_null();
5072 scsvs = sk_SSL_CIPHER_new_null();
5073 if (sk == NULL || scsvs == NULL) {
5074 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5075 *al = SSL_AD_INTERNAL_ERROR;
5076 goto err;
5077 }
ccb8e6e0
BK		 5078
5079 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5080 /*
5081 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5082 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5083 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5084 */
5085 if (sslv2format && cipher[0] != '\0')
5086 continue;
5087
ccb8e6e0
BK		 5088 /* For SSLv2-compat, ignore leading 0-byte. */
5089 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5090 if (c != NULL) {
90134d98
BK		 5091 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5092 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
ccb8e6e0
BK		 5093 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5094 *al = SSL_AD_INTERNAL_ERROR;
5095 goto err;
5096 }
5097 }
5098 }
5099 if (PACKET_remaining(cipher_suites) > 0) {
fb34a0f4
MC		 5100 *al = SSL_AD_DECODE_ERROR;
5101 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
ccb8e6e0
BK		 5102 goto err;
5103 }
5104
90134d98
BK		 5105 if (skp != NULL)
5106 *skp = sk;
5107 else
5108 sk_SSL_CIPHER_free(sk);
5109 if (scsvs_out != NULL)
5110 *scsvs_out = scsvs;
5111 else
5112 sk_SSL_CIPHER_free(scsvs);
5113 return 1;
ccb8e6e0
BK		 5114 err:
5115 sk_SSL_CIPHER_free(sk);
90134d98
BK		 5116 sk_SSL_CIPHER_free(scsvs);
5117 return 0;
ccb8e6e0 5118}
3fc8d856
MC		 5119
5120int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5121{
5122 ctx->max_early_data = max_early_data;
5123
5124 return 1;
5125}
5126
46dcb945 5127uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
3fc8d856
MC		 5128{
5129 return ctx->max_early_data;
5130}
5131
5132int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5133{
5134 s->max_early_data = max_early_data;
5135
5136 return 1;
5137}
5138
a8e75d56 5139uint32_t SSL_get_max_early_data(const SSL *s)
3fc8d856
MC		 5140{
5141 return s->max_early_data;
5142}
ae3947de
RS		 5143
5144int ssl_randbytes(SSL *s, unsigned char *rnd, size_t size)
5145{
2139145b
BK		 5146 if (s->drbg != NULL) {
5147 /*
5148 * Currently, it's the duty of the caller to serialize the generate
5149 * requests to the DRBG. So formally we have to check whether
5150 * s->drbg->lock != NULL and take the lock if this is the case.
5151 * However, this DRBG is unique to a given SSL object, and we already
5152 * require that SSL objects are only accessed by a single thread at
5153 * a given time. Also, SSL DRBGs have no child DRBG, so there is
5154 * no risk that this DRBG is accessed by a child DRBG in parallel
5155 * for reseeding. As such, we can rely on the application's
5156 * serialization of SSL accesses for the needed concurrency protection
5157 * here.
5158 */
5159 return RAND_DRBG_generate(s->drbg, rnd, size, 0, NULL, 0);
5160 }
ae3947de
RS		 5161 return RAND_bytes(rnd, (int)size);
5162}
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