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source: vbox/trunk/src/libs/openssl-3.1.4/ssl/ssl_lib.c@ 104031

Last change on this file since 104031 was 102863, checked in by vboxsync, 11 months ago

openssl-3.1.4: Applied and adjusted our OpenSSL changes to 3.1.3. bugref:10577
File size: 166.3 KB
Line 
1/*
2 * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
5 *
6 * Licensed under the Apache License 2.0 (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
10 */
11
12#include <stdio.h>
13#include "ssl_local.h"
14#include "internal/e_os.h"
15#include <openssl/objects.h>
16#include <openssl/x509v3.h>
17#include <openssl/rand.h>
18#include <openssl/ocsp.h>
19#include <openssl/dh.h>
20#include <openssl/engine.h>
21#include <openssl/async.h>
22#include <openssl/ct.h>
23#include <openssl/trace.h>
24#include "internal/cryptlib.h"
25#include "internal/nelem.h"
26#include "internal/refcount.h"
27#include "internal/ktls.h"
28
29static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
30 SSL_MAC_BUF *mac, size_t macsize)
31{
32 return ssl_undefined_function(ssl);
33}
34
35static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
36 int t)
37{
38 return ssl_undefined_function(ssl);
39}
40
41static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
42 unsigned char *s, size_t t, size_t *u)
43{
44 return ssl_undefined_function(ssl);
45}
46
47static int ssl_undefined_function_4(SSL *ssl, int r)
48{
49 return ssl_undefined_function(ssl);
50}
51
52static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
53 unsigned char *t)
54{
55 return ssl_undefined_function(ssl);
56}
57
58static int ssl_undefined_function_6(int r)
59{
60 return ssl_undefined_function(NULL);
61}
62
63static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
64 const char *t, size_t u,
65 const unsigned char *v, size_t w, int x)
66{
67 return ssl_undefined_function(ssl);
68}
69
70SSL3_ENC_METHOD ssl3_undef_enc_method = {
71 ssl_undefined_function_1,
72 ssl_undefined_function_2,
73 ssl_undefined_function,
74 ssl_undefined_function_3,
75 ssl_undefined_function_4,
76 ssl_undefined_function_5,
77 NULL, /* client_finished_label */
78 0, /* client_finished_label_len */
79 NULL, /* server_finished_label */
80 0, /* server_finished_label_len */
81 ssl_undefined_function_6,
82 ssl_undefined_function_7,
83};
84
85struct ssl_async_args {
86 SSL *s;
87 void *buf;
88 size_t num;
89 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
90 union {
91 int (*func_read) (SSL *, void *, size_t, size_t *);
92 int (*func_write) (SSL *, const void *, size_t, size_t *);
93 int (*func_other) (SSL *);
94 } f;
95};
96
97static const struct {
98 uint8_t mtype;
99 uint8_t ord;
100 int nid;
101} dane_mds[] = {
102 {
103 DANETLS_MATCHING_FULL, 0, NID_undef
104 },
105 {
106 DANETLS_MATCHING_2256, 1, NID_sha256
107 },
108 {
109 DANETLS_MATCHING_2512, 2, NID_sha512
110 },
111};
112
113static int dane_ctx_enable(struct dane_ctx_st *dctx)
114{
115 const EVP_MD **mdevp;
116 uint8_t *mdord;
117 uint8_t mdmax = DANETLS_MATCHING_LAST;
118 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
119 size_t i;
120
121 if (dctx->mdevp != NULL)
122 return 1;
123
124 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
125 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
126
127 if (mdord == NULL || mdevp == NULL) {
128 OPENSSL_free(mdord);
129 OPENSSL_free(mdevp);
130 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
131 return 0;
132 }
133
134 /* Install default entries */
135 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
136 const EVP_MD *md;
137
138 if (dane_mds[i].nid == NID_undef ||
139 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
140 continue;
141 mdevp[dane_mds[i].mtype] = md;
142 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
143 }
144
145 dctx->mdevp = mdevp;
146 dctx->mdord = mdord;
147 dctx->mdmax = mdmax;
148
149 return 1;
150}
151
152static void dane_ctx_final(struct dane_ctx_st *dctx)
153{
154 OPENSSL_free(dctx->mdevp);
155 dctx->mdevp = NULL;
156
157 OPENSSL_free(dctx->mdord);
158 dctx->mdord = NULL;
159 dctx->mdmax = 0;
160}
161
162static void tlsa_free(danetls_record *t)
163{
164 if (t == NULL)
165 return;
166 OPENSSL_free(t->data);
167 EVP_PKEY_free(t->spki);
168 OPENSSL_free(t);
169}
170
171static void dane_final(SSL_DANE *dane)
172{
173 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
174 dane->trecs = NULL;
175
176 sk_X509_pop_free(dane->certs, X509_free);
177 dane->certs = NULL;
178
179 X509_free(dane->mcert);
180 dane->mcert = NULL;
181 dane->mtlsa = NULL;
182 dane->mdpth = -1;
183 dane->pdpth = -1;
184}
185
186/*
187 * dane_copy - Copy dane configuration, sans verification state.
188 */
189static int ssl_dane_dup(SSL *to, SSL *from)
190{
191 int num;
192 int i;
193
194 if (!DANETLS_ENABLED(&from->dane))
195 return 1;
196
197 num = sk_danetls_record_num(from->dane.trecs);
198 dane_final(&to->dane);
199 to->dane.flags = from->dane.flags;
200 to->dane.dctx = &to->ctx->dane;
201 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
202
203 if (to->dane.trecs == NULL) {
204 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
205 return 0;
206 }
207
208 for (i = 0; i < num; ++i) {
209 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
210
211 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
212 t->data, t->dlen) <= 0)
213 return 0;
214 }
215 return 1;
216}
217
218static int dane_mtype_set(struct dane_ctx_st *dctx,
219 const EVP_MD *md, uint8_t mtype, uint8_t ord)
220{
221 int i;
222
223 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
224 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
225 return 0;
226 }
227
228 if (mtype > dctx->mdmax) {
229 const EVP_MD **mdevp;
230 uint8_t *mdord;
231 int n = ((int)mtype) + 1;
232
233 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
234 if (mdevp == NULL) {
235 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
236 return -1;
237 }
238 dctx->mdevp = mdevp;
239
240 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
241 if (mdord == NULL) {
242 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
243 return -1;
244 }
245 dctx->mdord = mdord;
246
247 /* Zero-fill any gaps */
248 for (i = dctx->mdmax + 1; i < mtype; ++i) {
249 mdevp[i] = NULL;
250 mdord[i] = 0;
251 }
252
253 dctx->mdmax = mtype;
254 }
255
256 dctx->mdevp[mtype] = md;
257 /* Coerce ordinal of disabled matching types to 0 */
258 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
259
260 return 1;
261}
262
263static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
264{
265 if (mtype > dane->dctx->mdmax)
266 return NULL;
267 return dane->dctx->mdevp[mtype];
268}
269
270static int dane_tlsa_add(SSL_DANE *dane,
271 uint8_t usage,
272 uint8_t selector,
273 uint8_t mtype, const unsigned char *data, size_t dlen)
274{
275 danetls_record *t;
276 const EVP_MD *md = NULL;
277 int ilen = (int)dlen;
278 int i;
279 int num;
280
281 if (dane->trecs == NULL) {
282 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
283 return -1;
284 }
285
286 if (ilen < 0 || dlen != (size_t)ilen) {
287 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
288 return 0;
289 }
290
291 if (usage > DANETLS_USAGE_LAST) {
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
293 return 0;
294 }
295
296 if (selector > DANETLS_SELECTOR_LAST) {
297 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
298 return 0;
299 }
300
301 if (mtype != DANETLS_MATCHING_FULL) {
302 md = tlsa_md_get(dane, mtype);
303 if (md == NULL) {
304 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
305 return 0;
306 }
307 }
308
309 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
310 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
311 return 0;
312 }
313 if (!data) {
314 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
315 return 0;
316 }
317
318 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
319 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
320 return -1;
321 }
322
323 t->usage = usage;
324 t->selector = selector;
325 t->mtype = mtype;
326 t->data = OPENSSL_malloc(dlen);
327 if (t->data == NULL) {
328 tlsa_free(t);
329 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
330 return -1;
331 }
332 memcpy(t->data, data, dlen);
333 t->dlen = dlen;
334
335 /* Validate and cache full certificate or public key */
336 if (mtype == DANETLS_MATCHING_FULL) {
337 const unsigned char *p = data;
338 X509 *cert = NULL;
339 EVP_PKEY *pkey = NULL;
340
341 switch (selector) {
342 case DANETLS_SELECTOR_CERT:
343 if (!d2i_X509(&cert, &p, ilen) || p < data ||
344 dlen != (size_t)(p - data)) {
345 tlsa_free(t);
346 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
347 return 0;
348 }
349 if (X509_get0_pubkey(cert) == NULL) {
350 tlsa_free(t);
351 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
352 return 0;
353 }
354
355 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
356 X509_free(cert);
357 break;
358 }
359
360 /*
361 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
362 * records that contain full certificates of trust-anchors that are
363 * not present in the wire chain. For usage PKIX-TA(0), we augment
364 * the chain with untrusted Full(0) certificates from DNS, in case
365 * they are missing from the chain.
366 */
367 if ((dane->certs == NULL &&
368 (dane->certs = sk_X509_new_null()) == NULL) ||
369 !sk_X509_push(dane->certs, cert)) {
370 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
371 X509_free(cert);
372 tlsa_free(t);
373 return -1;
374 }
375 break;
376
377 case DANETLS_SELECTOR_SPKI:
378 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
379 dlen != (size_t)(p - data)) {
380 tlsa_free(t);
381 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
382 return 0;
383 }
384
385 /*
386 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
387 * records that contain full bare keys of trust-anchors that are
388 * not present in the wire chain.
389 */
390 if (usage == DANETLS_USAGE_DANE_TA)
391 t->spki = pkey;
392 else
393 EVP_PKEY_free(pkey);
394 break;
395 }
396 }
397
398 /*-
399 * Find the right insertion point for the new record.
400 *
401 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
402 * they can be processed first, as they require no chain building, and no
403 * expiration or hostname checks. Because DANE-EE(3) is numerically
404 * largest, this is accomplished via descending sort by "usage".
405 *
406 * We also sort in descending order by matching ordinal to simplify
407 * the implementation of digest agility in the verification code.
408 *
409 * The choice of order for the selector is not significant, so we
410 * use the same descending order for consistency.
411 */
412 num = sk_danetls_record_num(dane->trecs);
413 for (i = 0; i < num; ++i) {
414 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
415
416 if (rec->usage > usage)
417 continue;
418 if (rec->usage < usage)
419 break;
420 if (rec->selector > selector)
421 continue;
422 if (rec->selector < selector)
423 break;
424 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
425 continue;
426 break;
427 }
428
429 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
430 tlsa_free(t);
431 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
432 return -1;
433 }
434 dane->umask |= DANETLS_USAGE_BIT(usage);
435
436 return 1;
437}
438
439/*
440 * Return 0 if there is only one version configured and it was disabled
441 * at configure time. Return 1 otherwise.
442 */
443static int ssl_check_allowed_versions(int min_version, int max_version)
444{
445 int minisdtls = 0, maxisdtls = 0;
446
447 /* Figure out if we're doing DTLS versions or TLS versions */
448 if (min_version == DTLS1_BAD_VER
449 || min_version >> 8 == DTLS1_VERSION_MAJOR)
450 minisdtls = 1;
451 if (max_version == DTLS1_BAD_VER
452 || max_version >> 8 == DTLS1_VERSION_MAJOR)
453 maxisdtls = 1;
454 /* A wildcard version of 0 could be DTLS or TLS. */
455 if ((minisdtls && !maxisdtls && max_version != 0)
456 || (maxisdtls && !minisdtls && min_version != 0)) {
457 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
458 return 0;
459 }
460
461 if (minisdtls || maxisdtls) {
462 /* Do DTLS version checks. */
463 if (min_version == 0)
464 /* Ignore DTLS1_BAD_VER */
465 min_version = DTLS1_VERSION;
466 if (max_version == 0)
467 max_version = DTLS1_2_VERSION;
468#ifdef OPENSSL_NO_DTLS1_2
469 if (max_version == DTLS1_2_VERSION)
470 max_version = DTLS1_VERSION;
471#endif
472#ifdef OPENSSL_NO_DTLS1
473 if (min_version == DTLS1_VERSION)
474 min_version = DTLS1_2_VERSION;
475#endif
476 /* Done massaging versions; do the check. */
477 if (0
478#ifdef OPENSSL_NO_DTLS1
479 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
480 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
481#endif
482#ifdef OPENSSL_NO_DTLS1_2
483 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
484 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
485#endif
486 )
487 return 0;
488 } else {
489 /* Regular TLS version checks. */
490 if (min_version == 0)
491 min_version = SSL3_VERSION;
492 if (max_version == 0)
493 max_version = TLS1_3_VERSION;
494#ifdef OPENSSL_NO_TLS1_3
495 if (max_version == TLS1_3_VERSION)
496 max_version = TLS1_2_VERSION;
497#endif
498#ifdef OPENSSL_NO_TLS1_2
499 if (max_version == TLS1_2_VERSION)
500 max_version = TLS1_1_VERSION;
501#endif
502#ifdef OPENSSL_NO_TLS1_1
503 if (max_version == TLS1_1_VERSION)
504 max_version = TLS1_VERSION;
505#endif
506#ifdef OPENSSL_NO_TLS1
507 if (max_version == TLS1_VERSION)
508 max_version = SSL3_VERSION;
509#endif
510#ifdef OPENSSL_NO_SSL3
511 if (min_version == SSL3_VERSION)
512 min_version = TLS1_VERSION;
513#endif
514#ifdef OPENSSL_NO_TLS1
515 if (min_version == TLS1_VERSION)
516 min_version = TLS1_1_VERSION;
517#endif
518#ifdef OPENSSL_NO_TLS1_1
519 if (min_version == TLS1_1_VERSION)
520 min_version = TLS1_2_VERSION;
521#endif
522#ifdef OPENSSL_NO_TLS1_2
523 if (min_version == TLS1_2_VERSION)
524 min_version = TLS1_3_VERSION;
525#endif
526 /* Done massaging versions; do the check. */
527 if (0
528#ifdef OPENSSL_NO_SSL3
529 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
530#endif
531#ifdef OPENSSL_NO_TLS1
532 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
533#endif
534#ifdef OPENSSL_NO_TLS1_1
535 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
536#endif
537#ifdef OPENSSL_NO_TLS1_2
538 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
539#endif
540#ifdef OPENSSL_NO_TLS1_3
541 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
542#endif
543 )
544 return 0;
545 }
546 return 1;
547}
548
549#if defined(__TANDEM) && defined(OPENSSL_VPROC)
550/*
551 * Define a VPROC function for HP NonStop build ssl library.
552 * This is used by platform version identification tools.
553 * Do not inline this procedure or make it static.
554 */
555# define OPENSSL_VPROC_STRING_(x) x##_SSL
556# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
557# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
558void OPENSSL_VPROC_FUNC(void) {}
559#endif
560
561
562static void clear_ciphers(SSL *s)
563{
564 /* clear the current cipher */
565 ssl_clear_cipher_ctx(s);
566 ssl_clear_hash_ctx(&s->read_hash);
567 ssl_clear_hash_ctx(&s->write_hash);
568}
569
570int SSL_clear(SSL *s)
571{
572 if (s->method == NULL) {
573 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
574 return 0;
575 }
576
577 if (ssl_clear_bad_session(s)) {
578 SSL_SESSION_free(s->session);
579 s->session = NULL;
580 }
581 SSL_SESSION_free(s->psksession);
582 s->psksession = NULL;
583 OPENSSL_free(s->psksession_id);
584 s->psksession_id = NULL;
585 s->psksession_id_len = 0;
586 s->hello_retry_request = SSL_HRR_NONE;
587 s->sent_tickets = 0;
588
589 s->error = 0;
590 s->hit = 0;
591 s->shutdown = 0;
592
593 if (s->renegotiate) {
594 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
595 return 0;
596 }
597
598 ossl_statem_clear(s);
599
600 s->version = s->method->version;
601 s->client_version = s->version;
602 s->rwstate = SSL_NOTHING;
603
604 BUF_MEM_free(s->init_buf);
605 s->init_buf = NULL;
606 clear_ciphers(s);
607 s->first_packet = 0;
608
609 s->key_update = SSL_KEY_UPDATE_NONE;
610
611 EVP_MD_CTX_free(s->pha_dgst);
612 s->pha_dgst = NULL;
613
614 /* Reset DANE verification result state */
615 s->dane.mdpth = -1;
616 s->dane.pdpth = -1;
617 X509_free(s->dane.mcert);
618 s->dane.mcert = NULL;
619 s->dane.mtlsa = NULL;
620
621 /* Clear the verification result peername */
622 X509_VERIFY_PARAM_move_peername(s->param, NULL);
623
624 /* Clear any shared connection state */
625 OPENSSL_free(s->shared_sigalgs);
626 s->shared_sigalgs = NULL;
627 s->shared_sigalgslen = 0;
628
629 /*
630 * Check to see if we were changed into a different method, if so, revert
631 * back.
632 */
633 if (s->method != s->ctx->method) {
634 s->method->ssl_free(s);
635 s->method = s->ctx->method;
636 if (!s->method->ssl_new(s))
637 return 0;
638 } else {
639 if (!s->method->ssl_clear(s))
640 return 0;
641 }
642
643 RECORD_LAYER_clear(&s->rlayer);
644
645 return 1;
646}
647
648#ifndef OPENSSL_NO_DEPRECATED_3_0
649/** Used to change an SSL_CTXs default SSL method type */
650int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
651{
652 STACK_OF(SSL_CIPHER) *sk;
653
654 ctx->method = meth;
655
656 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
657 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
658 return 0;
659 }
660 sk = ssl_create_cipher_list(ctx,
661 ctx->tls13_ciphersuites,
662 &(ctx->cipher_list),
663 &(ctx->cipher_list_by_id),
664 OSSL_default_cipher_list(), ctx->cert);
665 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
666 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
667 return 0;
668 }
669 return 1;
670}
671#endif
672
673SSL *SSL_new(SSL_CTX *ctx)
674{
675 SSL *s;
676
677 if (ctx == NULL) {
678 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
679 return NULL;
680 }
681 if (ctx->method == NULL) {
682 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
683 return NULL;
684 }
685
686 s = OPENSSL_zalloc(sizeof(*s));
687 if (s == NULL)
688 goto err;
689
690 s->references = 1;
691 s->lock = CRYPTO_THREAD_lock_new();
692 if (s->lock == NULL) {
693 OPENSSL_free(s);
694 s = NULL;
695 goto err;
696 }
697
698 RECORD_LAYER_init(&s->rlayer, s);
699
700 s->options = ctx->options;
701 s->dane.flags = ctx->dane.flags;
702 s->min_proto_version = ctx->min_proto_version;
703 s->max_proto_version = ctx->max_proto_version;
704 s->mode = ctx->mode;
705 s->max_cert_list = ctx->max_cert_list;
706 s->max_early_data = ctx->max_early_data;
707 s->recv_max_early_data = ctx->recv_max_early_data;
708 s->num_tickets = ctx->num_tickets;
709 s->pha_enabled = ctx->pha_enabled;
710
711 /* Shallow copy of the ciphersuites stack */
712 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
713 if (s->tls13_ciphersuites == NULL)
714 goto err;
715
716 /*
717 * Earlier library versions used to copy the pointer to the CERT, not
718 * its contents; only when setting new parameters for the per-SSL
719 * copy, ssl_cert_new would be called (and the direct reference to
720 * the per-SSL_CTX settings would be lost, but those still were
721 * indirectly accessed for various purposes, and for that reason they
722 * used to be known as s->ctx->default_cert). Now we don't look at the
723 * SSL_CTX's CERT after having duplicated it once.
724 */
725 s->cert = ssl_cert_dup(ctx->cert);
726 if (s->cert == NULL)
727 goto err;
728
729 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
730 s->msg_callback = ctx->msg_callback;
731 s->msg_callback_arg = ctx->msg_callback_arg;
732 s->verify_mode = ctx->verify_mode;
733 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
734 s->record_padding_cb = ctx->record_padding_cb;
735 s->record_padding_arg = ctx->record_padding_arg;
736 s->block_padding = ctx->block_padding;
737 s->sid_ctx_length = ctx->sid_ctx_length;
738 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
739 goto err;
740 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
741 s->verify_callback = ctx->default_verify_callback;
742 s->generate_session_id = ctx->generate_session_id;
743
744 s->param = X509_VERIFY_PARAM_new();
745 if (s->param == NULL)
746 goto err;
747 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
748 s->quiet_shutdown = ctx->quiet_shutdown;
749
750 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
751 s->max_send_fragment = ctx->max_send_fragment;
752 s->split_send_fragment = ctx->split_send_fragment;
753 s->max_pipelines = ctx->max_pipelines;
754 if (s->max_pipelines > 1)
755 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
756 if (ctx->default_read_buf_len > 0)
757 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
758
759 SSL_CTX_up_ref(ctx);
760 s->ctx = ctx;
761 s->ext.debug_cb = 0;
762 s->ext.debug_arg = NULL;
763 s->ext.ticket_expected = 0;
764 s->ext.status_type = ctx->ext.status_type;
765 s->ext.status_expected = 0;
766 s->ext.ocsp.ids = NULL;
767 s->ext.ocsp.exts = NULL;
768 s->ext.ocsp.resp = NULL;
769 s->ext.ocsp.resp_len = 0;
770 SSL_CTX_up_ref(ctx);
771 s->session_ctx = ctx;
772 if (ctx->ext.ecpointformats) {
773 s->ext.ecpointformats =
774 OPENSSL_memdup(ctx->ext.ecpointformats,
775 ctx->ext.ecpointformats_len);
776 if (!s->ext.ecpointformats) {
777 s->ext.ecpointformats_len = 0;
778 goto err;
779 }
780 s->ext.ecpointformats_len =
781 ctx->ext.ecpointformats_len;
782 }
783 if (ctx->ext.supportedgroups) {
784 s->ext.supportedgroups =
785 OPENSSL_memdup(ctx->ext.supportedgroups,
786 ctx->ext.supportedgroups_len
787 * sizeof(*ctx->ext.supportedgroups));
788 if (!s->ext.supportedgroups) {
789 s->ext.supportedgroups_len = 0;
790 goto err;
791 }
792 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
793 }
794
795#ifndef OPENSSL_NO_NEXTPROTONEG
796 s->ext.npn = NULL;
797#endif
798
799 if (s->ctx->ext.alpn) {
800 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
801 if (s->ext.alpn == NULL) {
802 s->ext.alpn_len = 0;
803 goto err;
804 }
805 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
806 s->ext.alpn_len = s->ctx->ext.alpn_len;
807 }
808
809 s->verified_chain = NULL;
810 s->verify_result = X509_V_OK;
811
812 s->default_passwd_callback = ctx->default_passwd_callback;
813 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
814
815 s->method = ctx->method;
816
817 s->key_update = SSL_KEY_UPDATE_NONE;
818
819 s->allow_early_data_cb = ctx->allow_early_data_cb;
820 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
821
822 if (!s->method->ssl_new(s))
823 goto err;
824
825 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
826
827 if (!SSL_clear(s))
828 goto err;
829
830 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
831 goto err;
832
833#ifndef OPENSSL_NO_PSK
834 s->psk_client_callback = ctx->psk_client_callback;
835 s->psk_server_callback = ctx->psk_server_callback;
836#endif
837 s->psk_find_session_cb = ctx->psk_find_session_cb;
838 s->psk_use_session_cb = ctx->psk_use_session_cb;
839
840 s->async_cb = ctx->async_cb;
841 s->async_cb_arg = ctx->async_cb_arg;
842
843 s->job = NULL;
844
845#ifndef OPENSSL_NO_CT
846 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
847 ctx->ct_validation_callback_arg))
848 goto err;
849#endif
850
851 return s;
852 err:
853 SSL_free(s);
854 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
855 return NULL;
856}
857
858int SSL_is_dtls(const SSL *s)
859{
860 return SSL_IS_DTLS(s) ? 1 : 0;
861}
862
863int SSL_up_ref(SSL *s)
864{
865 int i;
866
867 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
868 return 0;
869
870 REF_PRINT_COUNT("SSL", s);
871 REF_ASSERT_ISNT(i < 2);
872 return ((i > 1) ? 1 : 0);
873}
874
875int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
876 unsigned int sid_ctx_len)
877{
878 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
879 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
880 return 0;
881 }
882 ctx->sid_ctx_length = sid_ctx_len;
883 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
884
885 return 1;
886}
887
888int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
889 unsigned int sid_ctx_len)
890{
891 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
892 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
893 return 0;
894 }
895 ssl->sid_ctx_length = sid_ctx_len;
896 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
897
898 return 1;
899}
900
901int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
902{
903 if (!CRYPTO_THREAD_write_lock(ctx->lock))
904 return 0;
905 ctx->generate_session_id = cb;
906 CRYPTO_THREAD_unlock(ctx->lock);
907 return 1;
908}
909
910int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
911{
912 if (!CRYPTO_THREAD_write_lock(ssl->lock))
913 return 0;
914 ssl->generate_session_id = cb;
915 CRYPTO_THREAD_unlock(ssl->lock);
916 return 1;
917}
918
919int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
920 unsigned int id_len)
921{
922 /*
923 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
924 * we can "construct" a session to give us the desired check - i.e. to
925 * find if there's a session in the hash table that would conflict with
926 * any new session built out of this id/id_len and the ssl_version in use
927 * by this SSL.
928 */
929 SSL_SESSION r, *p;
930
931 if (id_len > sizeof(r.session_id))
932 return 0;
933
934 r.ssl_version = ssl->version;
935 r.session_id_length = id_len;
936 memcpy(r.session_id, id, id_len);
937
938 if (!CRYPTO_THREAD_read_lock(ssl->session_ctx->lock))
939 return 0;
940 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
941 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
942 return (p != NULL);
943}
944
945int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
946{
947 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
948}
949
950int SSL_set_purpose(SSL *s, int purpose)
951{
952 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
953}
954
955int SSL_CTX_set_trust(SSL_CTX *s, int trust)
956{
957 return X509_VERIFY_PARAM_set_trust(s->param, trust);
958}
959
960int SSL_set_trust(SSL *s, int trust)
961{
962 return X509_VERIFY_PARAM_set_trust(s->param, trust);
963}
964
965int SSL_set1_host(SSL *s, const char *hostname)
966{
967 /* If a hostname is provided and parses as an IP address,
968 * treat it as such. */
969 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
970 return 1;
971
972 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
973}
974
975int SSL_add1_host(SSL *s, const char *hostname)
976{
977 /* If a hostname is provided and parses as an IP address,
978 * treat it as such. */
979 if (hostname)
980 {
981 ASN1_OCTET_STRING *ip;
982 char *old_ip;
983
984 ip = a2i_IPADDRESS(hostname);
985 if (ip) {
986 /* We didn't want it; only to check if it *is* an IP address */
987 ASN1_OCTET_STRING_free(ip);
988
989 old_ip = X509_VERIFY_PARAM_get1_ip_asc(s->param);
990 if (old_ip)
991 {
992 OPENSSL_free(old_ip);
993 /* There can be only one IP address */
994 return 0;
995 }
996
997 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
998 }
999 }
1000
1001 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
1002}
1003
1004void SSL_set_hostflags(SSL *s, unsigned int flags)
1005{
1006 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
1007}
1008
1009const char *SSL_get0_peername(SSL *s)
1010{
1011 return X509_VERIFY_PARAM_get0_peername(s->param);
1012}
1013
1014int SSL_CTX_dane_enable(SSL_CTX *ctx)
1015{
1016 return dane_ctx_enable(&ctx->dane);
1017}
1018
1019unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1020{
1021 unsigned long orig = ctx->dane.flags;
1022
1023 ctx->dane.flags |= flags;
1024 return orig;
1025}
1026
1027unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1028{
1029 unsigned long orig = ctx->dane.flags;
1030
1031 ctx->dane.flags &= ~flags;
1032 return orig;
1033}
1034
1035int SSL_dane_enable(SSL *s, const char *basedomain)
1036{
1037 SSL_DANE *dane = &s->dane;
1038
1039 if (s->ctx->dane.mdmax == 0) {
1040 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1041 return 0;
1042 }
1043 if (dane->trecs != NULL) {
1044 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1045 return 0;
1046 }
1047
1048 /*
1049 * Default SNI name. This rejects empty names, while set1_host below
1050 * accepts them and disables hostname checks. To avoid side-effects with
1051 * invalid input, set the SNI name first.
1052 */
1053 if (s->ext.hostname == NULL) {
1054 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1055 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1056 return -1;
1057 }
1058 }
1059
1060 /* Primary RFC6125 reference identifier */
1061 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1062 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1063 return -1;
1064 }
1065
1066 dane->mdpth = -1;
1067 dane->pdpth = -1;
1068 dane->dctx = &s->ctx->dane;
1069 dane->trecs = sk_danetls_record_new_null();
1070
1071 if (dane->trecs == NULL) {
1072 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1073 return -1;
1074 }
1075 return 1;
1076}
1077
1078unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1079{
1080 unsigned long orig = ssl->dane.flags;
1081
1082 ssl->dane.flags |= flags;
1083 return orig;
1084}
1085
1086unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1087{
1088 unsigned long orig = ssl->dane.flags;
1089
1090 ssl->dane.flags &= ~flags;
1091 return orig;
1092}
1093
1094int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1095{
1096 SSL_DANE *dane = &s->dane;
1097
1098 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1099 return -1;
1100 if (dane->mtlsa) {
1101 if (mcert)
1102 *mcert = dane->mcert;
1103 if (mspki)
1104 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1105 }
1106 return dane->mdpth;
1107}
1108
1109int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1110 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1111{
1112 SSL_DANE *dane = &s->dane;
1113
1114 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1115 return -1;
1116 if (dane->mtlsa) {
1117 if (usage)
1118 *usage = dane->mtlsa->usage;
1119 if (selector)
1120 *selector = dane->mtlsa->selector;
1121 if (mtype)
1122 *mtype = dane->mtlsa->mtype;
1123 if (data)
1124 *data = dane->mtlsa->data;
1125 if (dlen)
1126 *dlen = dane->mtlsa->dlen;
1127 }
1128 return dane->mdpth;
1129}
1130
1131SSL_DANE *SSL_get0_dane(SSL *s)
1132{
1133 return &s->dane;
1134}
1135
1136int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1137 uint8_t mtype, const unsigned char *data, size_t dlen)
1138{
1139 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1140}
1141
1142int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1143 uint8_t ord)
1144{
1145 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1146}
1147
1148int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1149{
1150 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1151}
1152
1153int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1154{
1155 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1156}
1157
1158X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1159{
1160 return ctx->param;
1161}
1162
1163X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1164{
1165 return ssl->param;
1166}
1167
1168void SSL_certs_clear(SSL *s)
1169{
1170 ssl_cert_clear_certs(s->cert);
1171}
1172
1173void SSL_free(SSL *s)
1174{
1175 int i;
1176
1177 if (s == NULL)
1178 return;
1179 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1180 REF_PRINT_COUNT("SSL", s);
1181 if (i > 0)
1182 return;
1183 REF_ASSERT_ISNT(i < 0);
1184
1185 X509_VERIFY_PARAM_free(s->param);
1186 dane_final(&s->dane);
1187 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1188
1189 RECORD_LAYER_release(&s->rlayer);
1190
1191 /* Ignore return value */
1192 ssl_free_wbio_buffer(s);
1193
1194 BIO_free_all(s->wbio);
1195 s->wbio = NULL;
1196 BIO_free_all(s->rbio);
1197 s->rbio = NULL;
1198
1199 BUF_MEM_free(s->init_buf);
1200
1201 /* add extra stuff */
1202 sk_SSL_CIPHER_free(s->cipher_list);
1203 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1204 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1205 sk_SSL_CIPHER_free(s->peer_ciphers);
1206
1207 /* Make the next call work :-) */
1208 if (s->session != NULL) {
1209 ssl_clear_bad_session(s);
1210 SSL_SESSION_free(s->session);
1211 }
1212 SSL_SESSION_free(s->psksession);
1213 OPENSSL_free(s->psksession_id);
1214
1215 clear_ciphers(s);
1216
1217 ssl_cert_free(s->cert);
1218 OPENSSL_free(s->shared_sigalgs);
1219 /* Free up if allocated */
1220
1221 OPENSSL_free(s->ext.hostname);
1222 SSL_CTX_free(s->session_ctx);
1223 OPENSSL_free(s->ext.ecpointformats);
1224 OPENSSL_free(s->ext.peer_ecpointformats);
1225 OPENSSL_free(s->ext.supportedgroups);
1226 OPENSSL_free(s->ext.peer_supportedgroups);
1227 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1228#ifndef OPENSSL_NO_OCSP
1229 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1230#endif
1231#ifndef OPENSSL_NO_CT
1232 SCT_LIST_free(s->scts);
1233 OPENSSL_free(s->ext.scts);
1234#endif
1235 OPENSSL_free(s->ext.ocsp.resp);
1236 OPENSSL_free(s->ext.alpn);
1237 OPENSSL_free(s->ext.tls13_cookie);
1238 if (s->clienthello != NULL)
1239 OPENSSL_free(s->clienthello->pre_proc_exts);
1240 OPENSSL_free(s->clienthello);
1241 OPENSSL_free(s->pha_context);
1242 EVP_MD_CTX_free(s->pha_dgst);
1243
1244 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1245 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1246
1247 sk_X509_pop_free(s->verified_chain, X509_free);
1248
1249 if (s->method != NULL)
1250 s->method->ssl_free(s);
1251
1252 SSL_CTX_free(s->ctx);
1253
1254 ASYNC_WAIT_CTX_free(s->waitctx);
1255
1256#if !defined(OPENSSL_NO_NEXTPROTONEG)
1257 OPENSSL_free(s->ext.npn);
1258#endif
1259
1260#ifndef OPENSSL_NO_SRTP
1261 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1262#endif
1263
1264 CRYPTO_THREAD_lock_free(s->lock);
1265
1266 OPENSSL_free(s);
1267}
1268
1269void SSL_set0_rbio(SSL *s, BIO *rbio)
1270{
1271 BIO_free_all(s->rbio);
1272 s->rbio = rbio;
1273}
1274
1275void SSL_set0_wbio(SSL *s, BIO *wbio)
1276{
1277 /*
1278 * If the output buffering BIO is still in place, remove it
1279 */
1280 if (s->bbio != NULL)
1281 s->wbio = BIO_pop(s->wbio);
1282
1283 BIO_free_all(s->wbio);
1284 s->wbio = wbio;
1285
1286 /* Re-attach |bbio| to the new |wbio|. */
1287 if (s->bbio != NULL)
1288 s->wbio = BIO_push(s->bbio, s->wbio);
1289}
1290
1291void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1292{
1293 /*
1294 * For historical reasons, this function has many different cases in
1295 * ownership handling.
1296 */
1297
1298 /* If nothing has changed, do nothing */
1299 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1300 return;
1301
1302 /*
1303 * If the two arguments are equal then one fewer reference is granted by the
1304 * caller than we want to take
1305 */
1306 if (rbio != NULL && rbio == wbio)
1307 BIO_up_ref(rbio);
1308
1309 /*
1310 * If only the wbio is changed only adopt one reference.
1311 */
1312 if (rbio == SSL_get_rbio(s)) {
1313 SSL_set0_wbio(s, wbio);
1314 return;
1315 }
1316 /*
1317 * There is an asymmetry here for historical reasons. If only the rbio is
1318 * changed AND the rbio and wbio were originally different, then we only
1319 * adopt one reference.
1320 */
1321 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1322 SSL_set0_rbio(s, rbio);
1323 return;
1324 }
1325
1326 /* Otherwise, adopt both references. */
1327 SSL_set0_rbio(s, rbio);
1328 SSL_set0_wbio(s, wbio);
1329}
1330
1331BIO *SSL_get_rbio(const SSL *s)
1332{
1333 return s->rbio;
1334}
1335
1336BIO *SSL_get_wbio(const SSL *s)
1337{
1338 if (s->bbio != NULL) {
1339 /*
1340 * If |bbio| is active, the true caller-configured BIO is its
1341 * |next_bio|.
1342 */
1343 return BIO_next(s->bbio);
1344 }
1345 return s->wbio;
1346}
1347
1348int SSL_get_fd(const SSL *s)
1349{
1350 return SSL_get_rfd(s);
1351}
1352
1353int SSL_get_rfd(const SSL *s)
1354{
1355 int ret = -1;
1356 BIO *b, *r;
1357
1358 b = SSL_get_rbio(s);
1359 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1360 if (r != NULL)
1361 BIO_get_fd(r, &ret);
1362 return ret;
1363}
1364
1365int SSL_get_wfd(const SSL *s)
1366{
1367 int ret = -1;
1368 BIO *b, *r;
1369
1370 b = SSL_get_wbio(s);
1371 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1372 if (r != NULL)
1373 BIO_get_fd(r, &ret);
1374 return ret;
1375}
1376
1377#ifndef OPENSSL_NO_SOCK
1378int SSL_set_fd(SSL *s, int fd)
1379{
1380 int ret = 0;
1381 BIO *bio = NULL;
1382
1383 bio = BIO_new(BIO_s_socket());
1384
1385 if (bio == NULL) {
1386 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1387 goto err;
1388 }
1389 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1390 SSL_set_bio(s, bio, bio);
1391#ifndef OPENSSL_NO_KTLS
1392 /*
1393 * The new socket is created successfully regardless of ktls_enable.
1394 * ktls_enable doesn't change any functionality of the socket, except
1395 * changing the setsockopt to enable the processing of ktls_start.
1396 * Thus, it is not a problem to call it for non-TLS sockets.
1397 */
1398 ktls_enable(fd);
1399#endif /* OPENSSL_NO_KTLS */
1400 ret = 1;
1401 err:
1402 return ret;
1403}
1404
1405int SSL_set_wfd(SSL *s, int fd)
1406{
1407 BIO *rbio = SSL_get_rbio(s);
1408
1409 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1410 || (int)BIO_get_fd(rbio, NULL) != fd) {
1411 BIO *bio = BIO_new(BIO_s_socket());
1412
1413 if (bio == NULL) {
1414 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1415 return 0;
1416 }
1417 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1418 SSL_set0_wbio(s, bio);
1419#ifndef OPENSSL_NO_KTLS
1420 /*
1421 * The new socket is created successfully regardless of ktls_enable.
1422 * ktls_enable doesn't change any functionality of the socket, except
1423 * changing the setsockopt to enable the processing of ktls_start.
1424 * Thus, it is not a problem to call it for non-TLS sockets.
1425 */
1426 ktls_enable(fd);
1427#endif /* OPENSSL_NO_KTLS */
1428 } else {
1429 BIO_up_ref(rbio);
1430 SSL_set0_wbio(s, rbio);
1431 }
1432 return 1;
1433}
1434
1435int SSL_set_rfd(SSL *s, int fd)
1436{
1437 BIO *wbio = SSL_get_wbio(s);
1438
1439 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1440 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1441 BIO *bio = BIO_new(BIO_s_socket());
1442
1443 if (bio == NULL) {
1444 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1445 return 0;
1446 }
1447 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1448 SSL_set0_rbio(s, bio);
1449 } else {
1450 BIO_up_ref(wbio);
1451 SSL_set0_rbio(s, wbio);
1452 }
1453
1454 return 1;
1455}
1456#endif
1457
1458/* return length of latest Finished message we sent, copy to 'buf' */
1459size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1460{
1461 size_t ret = 0;
1462
1463 ret = s->s3.tmp.finish_md_len;
1464 if (count > ret)
1465 count = ret;
1466 memcpy(buf, s->s3.tmp.finish_md, count);
1467 return ret;
1468}
1469
1470/* return length of latest Finished message we expected, copy to 'buf' */
1471size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1472{
1473 size_t ret = 0;
1474
1475 ret = s->s3.tmp.peer_finish_md_len;
1476 if (count > ret)
1477 count = ret;
1478 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1479 return ret;
1480}
1481
1482int SSL_get_verify_mode(const SSL *s)
1483{
1484 return s->verify_mode;
1485}
1486
1487int SSL_get_verify_depth(const SSL *s)
1488{
1489 return X509_VERIFY_PARAM_get_depth(s->param);
1490}
1491
1492int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1493 return s->verify_callback;
1494}
1495
1496int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1497{
1498 return ctx->verify_mode;
1499}
1500
1501int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1502{
1503 return X509_VERIFY_PARAM_get_depth(ctx->param);
1504}
1505
1506int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1507 return ctx->default_verify_callback;
1508}
1509
1510void SSL_set_verify(SSL *s, int mode,
1511 int (*callback) (int ok, X509_STORE_CTX *ctx))
1512{
1513 s->verify_mode = mode;
1514 if (callback != NULL)
1515 s->verify_callback = callback;
1516}
1517
1518void SSL_set_verify_depth(SSL *s, int depth)
1519{
1520 X509_VERIFY_PARAM_set_depth(s->param, depth);
1521}
1522
1523void SSL_set_read_ahead(SSL *s, int yes)
1524{
1525 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1526}
1527
1528int SSL_get_read_ahead(const SSL *s)
1529{
1530 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1531}
1532
1533int SSL_pending(const SSL *s)
1534{
1535 size_t pending = s->method->ssl_pending(s);
1536
1537 /*
1538 * SSL_pending cannot work properly if read-ahead is enabled
1539 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1540 * impossible to fix since SSL_pending cannot report errors that may be
1541 * observed while scanning the new data. (Note that SSL_pending() is
1542 * often used as a boolean value, so we'd better not return -1.)
1543 *
1544 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1545 * we just return INT_MAX.
1546 */
1547 return pending < INT_MAX ? (int)pending : INT_MAX;
1548}
1549
1550int SSL_has_pending(const SSL *s)
1551{
1552 /*
1553 * Similar to SSL_pending() but returns a 1 to indicate that we have
1554 * processed or unprocessed data available or 0 otherwise (as opposed to the
1555 * number of bytes available). Unlike SSL_pending() this will take into
1556 * account read_ahead data. A 1 return simply indicates that we have data.
1557 * That data may not result in any application data, or we may fail to parse
1558 * the records for some reason.
1559 */
1560
1561 /* Check buffered app data if any first */
1562 if (SSL_IS_DTLS(s)) {
1563 DTLS1_RECORD_DATA *rdata;
1564 pitem *item, *iter;
1565
1566 iter = pqueue_iterator(s->rlayer.d->buffered_app_data.q);
1567 while ((item = pqueue_next(&iter)) != NULL) {
1568 rdata = item->data;
1569 if (rdata->rrec.length > 0)
1570 return 1;
1571 }
1572 }
1573
1574 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1575 return 1;
1576
1577 return RECORD_LAYER_read_pending(&s->rlayer);
1578}
1579
1580X509 *SSL_get1_peer_certificate(const SSL *s)
1581{
1582 X509 *r = SSL_get0_peer_certificate(s);
1583
1584 if (r != NULL)
1585 X509_up_ref(r);
1586
1587 return r;
1588}
1589
1590X509 *SSL_get0_peer_certificate(const SSL *s)
1591{
1592 if ((s == NULL) || (s->session == NULL))
1593 return NULL;
1594 else
1595 return s->session->peer;
1596}
1597
1598STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1599{
1600 STACK_OF(X509) *r;
1601
1602 if ((s == NULL) || (s->session == NULL))
1603 r = NULL;
1604 else
1605 r = s->session->peer_chain;
1606
1607 /*
1608 * If we are a client, cert_chain includes the peer's own certificate; if
1609 * we are a server, it does not.
1610 */
1611
1612 return r;
1613}
1614
1615/*
1616 * Now in theory, since the calling process own 't' it should be safe to
1617 * modify. We need to be able to read f without being hassled
1618 */
1619int SSL_copy_session_id(SSL *t, const SSL *f)
1620{
1621 int i;
1622 /* Do we need to do SSL locking? */
1623 if (!SSL_set_session(t, SSL_get_session(f))) {
1624 return 0;
1625 }
1626
1627 /*
1628 * what if we are setup for one protocol version but want to talk another
1629 */
1630 if (t->method != f->method) {
1631 t->method->ssl_free(t);
1632 t->method = f->method;
1633 if (t->method->ssl_new(t) == 0)
1634 return 0;
1635 }
1636
1637 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1638 ssl_cert_free(t->cert);
1639 t->cert = f->cert;
1640 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1641 return 0;
1642 }
1643
1644 return 1;
1645}
1646
1647/* Fix this so it checks all the valid key/cert options */
1648int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1649{
1650 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1651 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1652 return 0;
1653 }
1654 if (ctx->cert->key->privatekey == NULL) {
1655 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1656 return 0;
1657 }
1658 return X509_check_private_key
1659 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1660}
1661
1662/* Fix this function so that it takes an optional type parameter */
1663int SSL_check_private_key(const SSL *ssl)
1664{
1665 if (ssl == NULL) {
1666 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1667 return 0;
1668 }
1669 if (ssl->cert->key->x509 == NULL) {
1670 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1671 return 0;
1672 }
1673 if (ssl->cert->key->privatekey == NULL) {
1674 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1675 return 0;
1676 }
1677 return X509_check_private_key(ssl->cert->key->x509,
1678 ssl->cert->key->privatekey);
1679}
1680
1681int SSL_waiting_for_async(SSL *s)
1682{
1683 if (s->job)
1684 return 1;
1685
1686 return 0;
1687}
1688
1689int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1690{
1691 ASYNC_WAIT_CTX *ctx = s->waitctx;
1692
1693 if (ctx == NULL)
1694 return 0;
1695 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1696}
1697
1698int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1699 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1700{
1701 ASYNC_WAIT_CTX *ctx = s->waitctx;
1702
1703 if (ctx == NULL)
1704 return 0;
1705 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1706 numdelfds);
1707}
1708
1709int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1710{
1711 ctx->async_cb = callback;
1712 return 1;
1713}
1714
1715int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1716{
1717 ctx->async_cb_arg = arg;
1718 return 1;
1719}
1720
1721int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1722{
1723 s->async_cb = callback;
1724 return 1;
1725}
1726
1727int SSL_set_async_callback_arg(SSL *s, void *arg)
1728{
1729 s->async_cb_arg = arg;
1730 return 1;
1731}
1732
1733int SSL_get_async_status(SSL *s, int *status)
1734{
1735 ASYNC_WAIT_CTX *ctx = s->waitctx;
1736
1737 if (ctx == NULL)
1738 return 0;
1739 *status = ASYNC_WAIT_CTX_get_status(ctx);
1740 return 1;
1741}
1742
1743int SSL_accept(SSL *s)
1744{
1745 if (s->handshake_func == NULL) {
1746 /* Not properly initialized yet */
1747 SSL_set_accept_state(s);
1748 }
1749
1750 return SSL_do_handshake(s);
1751}
1752
1753int SSL_connect(SSL *s)
1754{
1755 if (s->handshake_func == NULL) {
1756 /* Not properly initialized yet */
1757 SSL_set_connect_state(s);
1758 }
1759
1760 return SSL_do_handshake(s);
1761}
1762
1763long SSL_get_default_timeout(const SSL *s)
1764{
1765 return s->method->get_timeout();
1766}
1767
1768static int ssl_async_wait_ctx_cb(void *arg)
1769{
1770 SSL *s = (SSL *)arg;
1771
1772 return s->async_cb(s, s->async_cb_arg);
1773}
1774
1775static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1776 int (*func) (void *))
1777{
1778 int ret;
1779 if (s->waitctx == NULL) {
1780 s->waitctx = ASYNC_WAIT_CTX_new();
1781 if (s->waitctx == NULL)
1782 return -1;
1783 if (s->async_cb != NULL
1784 && !ASYNC_WAIT_CTX_set_callback
1785 (s->waitctx, ssl_async_wait_ctx_cb, s))
1786 return -1;
1787 }
1788
1789 s->rwstate = SSL_NOTHING;
1790 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1791 sizeof(struct ssl_async_args))) {
1792 case ASYNC_ERR:
1793 s->rwstate = SSL_NOTHING;
1794 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
1795 return -1;
1796 case ASYNC_PAUSE:
1797 s->rwstate = SSL_ASYNC_PAUSED;
1798 return -1;
1799 case ASYNC_NO_JOBS:
1800 s->rwstate = SSL_ASYNC_NO_JOBS;
1801 return -1;
1802 case ASYNC_FINISH:
1803 s->job = NULL;
1804 return ret;
1805 default:
1806 s->rwstate = SSL_NOTHING;
1807 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
1808 /* Shouldn't happen */
1809 return -1;
1810 }
1811}
1812
1813static int ssl_io_intern(void *vargs)
1814{
1815 struct ssl_async_args *args;
1816 SSL *s;
1817 void *buf;
1818 size_t num;
1819
1820 args = (struct ssl_async_args *)vargs;
1821 s = args->s;
1822 buf = args->buf;
1823 num = args->num;
1824 switch (args->type) {
1825 case READFUNC:
1826 return args->f.func_read(s, buf, num, &s->asyncrw);
1827 case WRITEFUNC:
1828 return args->f.func_write(s, buf, num, &s->asyncrw);
1829 case OTHERFUNC:
1830 return args->f.func_other(s);
1831 }
1832 return -1;
1833}
1834
1835int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1836{
1837 if (s->handshake_func == NULL) {
1838 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
1839 return -1;
1840 }
1841
1842 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1843 s->rwstate = SSL_NOTHING;
1844 return 0;
1845 }
1846
1847 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1848 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1849 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1850 return 0;
1851 }
1852 /*
1853 * If we are a client and haven't received the ServerHello etc then we
1854 * better do that
1855 */
1856 ossl_statem_check_finish_init(s, 0);
1857
1858 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1859 struct ssl_async_args args;
1860 int ret;
1861
1862 args.s = s;
1863 args.buf = buf;
1864 args.num = num;
1865 args.type = READFUNC;
1866 args.f.func_read = s->method->ssl_read;
1867
1868 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1869 *readbytes = s->asyncrw;
1870 return ret;
1871 } else {
1872 return s->method->ssl_read(s, buf, num, readbytes);
1873 }
1874}
1875
1876int SSL_read(SSL *s, void *buf, int num)
1877{
1878 int ret;
1879 size_t readbytes;
1880
1881 if (num < 0) {
1882 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
1883 return -1;
1884 }
1885
1886 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1887
1888 /*
1889 * The cast is safe here because ret should be <= INT_MAX because num is
1890 * <= INT_MAX
1891 */
1892 if (ret > 0)
1893 ret = (int)readbytes;
1894
1895 return ret;
1896}
1897
1898int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1899{
1900 int ret = ssl_read_internal(s, buf, num, readbytes);
1901
1902 if (ret < 0)
1903 ret = 0;
1904 return ret;
1905}
1906
1907int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1908{
1909 int ret;
1910
1911 if (!s->server) {
1912 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1913 return SSL_READ_EARLY_DATA_ERROR;
1914 }
1915
1916 switch (s->early_data_state) {
1917 case SSL_EARLY_DATA_NONE:
1918 if (!SSL_in_before(s)) {
1919 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1920 return SSL_READ_EARLY_DATA_ERROR;
1921 }
1922 /* fall through */
1923
1924 case SSL_EARLY_DATA_ACCEPT_RETRY:
1925 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1926 ret = SSL_accept(s);
1927 if (ret <= 0) {
1928 /* NBIO or error */
1929 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1930 return SSL_READ_EARLY_DATA_ERROR;
1931 }
1932 /* fall through */
1933
1934 case SSL_EARLY_DATA_READ_RETRY:
1935 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1936 s->early_data_state = SSL_EARLY_DATA_READING;
1937 ret = SSL_read_ex(s, buf, num, readbytes);
1938 /*
1939 * State machine will update early_data_state to
1940 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1941 * message
1942 */
1943 if (ret > 0 || (ret <= 0 && s->early_data_state
1944 != SSL_EARLY_DATA_FINISHED_READING)) {
1945 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1946 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1947 : SSL_READ_EARLY_DATA_ERROR;
1948 }
1949 } else {
1950 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1951 }
1952 *readbytes = 0;
1953 return SSL_READ_EARLY_DATA_FINISH;
1954
1955 default:
1956 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1957 return SSL_READ_EARLY_DATA_ERROR;
1958 }
1959}
1960
1961int SSL_get_early_data_status(const SSL *s)
1962{
1963 return s->ext.early_data;
1964}
1965
1966static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1967{
1968 if (s->handshake_func == NULL) {
1969 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
1970 return -1;
1971 }
1972
1973 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1974 return 0;
1975 }
1976 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1977 struct ssl_async_args args;
1978 int ret;
1979
1980 args.s = s;
1981 args.buf = buf;
1982 args.num = num;
1983 args.type = READFUNC;
1984 args.f.func_read = s->method->ssl_peek;
1985
1986 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1987 *readbytes = s->asyncrw;
1988 return ret;
1989 } else {
1990 return s->method->ssl_peek(s, buf, num, readbytes);
1991 }
1992}
1993
1994int SSL_peek(SSL *s, void *buf, int num)
1995{
1996 int ret;
1997 size_t readbytes;
1998
1999 if (num < 0) {
2000 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2001 return -1;
2002 }
2003
2004 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2005
2006 /*
2007 * The cast is safe here because ret should be <= INT_MAX because num is
2008 * <= INT_MAX
2009 */
2010 if (ret > 0)
2011 ret = (int)readbytes;
2012
2013 return ret;
2014}
2015
2016
2017int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2018{
2019 int ret = ssl_peek_internal(s, buf, num, readbytes);
2020
2021 if (ret < 0)
2022 ret = 0;
2023 return ret;
2024}
2025
2026int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2027{
2028 if (s->handshake_func == NULL) {
2029 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2030 return -1;
2031 }
2032
2033 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2034 s->rwstate = SSL_NOTHING;
2035 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2036 return -1;
2037 }
2038
2039 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2040 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2041 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2042 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2043 return 0;
2044 }
2045 /* If we are a client and haven't sent the Finished we better do that */
2046 ossl_statem_check_finish_init(s, 1);
2047
2048 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2049 int ret;
2050 struct ssl_async_args args;
2051
2052 args.s = s;
2053 args.buf = (void *)buf;
2054 args.num = num;
2055 args.type = WRITEFUNC;
2056 args.f.func_write = s->method->ssl_write;
2057
2058 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2059 *written = s->asyncrw;
2060 return ret;
2061 } else {
2062 return s->method->ssl_write(s, buf, num, written);
2063 }
2064}
2065
2066ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2067{
2068 ossl_ssize_t ret;
2069
2070 if (s->handshake_func == NULL) {
2071 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2072 return -1;
2073 }
2074
2075 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2076 s->rwstate = SSL_NOTHING;
2077 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2078 return -1;
2079 }
2080
2081 if (!BIO_get_ktls_send(s->wbio)) {
2082 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2083 return -1;
2084 }
2085
2086 /* If we have an alert to send, lets send it */
2087 if (s->s3.alert_dispatch) {
2088 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2089 if (ret <= 0) {
2090 /* SSLfatal() already called if appropriate */
2091 return ret;
2092 }
2093 /* if it went, fall through and send more stuff */
2094 }
2095
2096 s->rwstate = SSL_WRITING;
2097 if (BIO_flush(s->wbio) <= 0) {
2098 if (!BIO_should_retry(s->wbio)) {
2099 s->rwstate = SSL_NOTHING;
2100 } else {
2101#ifdef EAGAIN
2102 set_sys_error(EAGAIN);
2103#endif
2104 }
2105 return -1;
2106 }
2107
2108#ifdef OPENSSL_NO_KTLS
2109 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2110 "can't call ktls_sendfile(), ktls disabled");
2111 return -1;
2112#else
2113 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2114 if (ret < 0) {
2115#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2116 if ((get_last_sys_error() == EAGAIN) ||
2117 (get_last_sys_error() == EINTR) ||
2118 (get_last_sys_error() == EBUSY))
2119 BIO_set_retry_write(s->wbio);
2120 else
2121#endif
2122 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2123 return ret;
2124 }
2125 s->rwstate = SSL_NOTHING;
2126 return ret;
2127#endif
2128}
2129
2130int SSL_write(SSL *s, const void *buf, int num)
2131{
2132 int ret;
2133 size_t written;
2134
2135 if (num < 0) {
2136 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2137 return -1;
2138 }
2139
2140 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2141
2142 /*
2143 * The cast is safe here because ret should be <= INT_MAX because num is
2144 * <= INT_MAX
2145 */
2146 if (ret > 0)
2147 ret = (int)written;
2148
2149 return ret;
2150}
2151
2152int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2153{
2154 int ret = ssl_write_internal(s, buf, num, written);
2155
2156 if (ret < 0)
2157 ret = 0;
2158 return ret;
2159}
2160
2161int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2162{
2163 int ret, early_data_state;
2164 size_t writtmp;
2165 uint32_t partialwrite;
2166
2167 switch (s->early_data_state) {
2168 case SSL_EARLY_DATA_NONE:
2169 if (s->server
2170 || !SSL_in_before(s)
2171 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2172 && (s->psk_use_session_cb == NULL))) {
2173 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2174 return 0;
2175 }
2176 /* fall through */
2177
2178 case SSL_EARLY_DATA_CONNECT_RETRY:
2179 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2180 ret = SSL_connect(s);
2181 if (ret <= 0) {
2182 /* NBIO or error */
2183 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2184 return 0;
2185 }
2186 /* fall through */
2187
2188 case SSL_EARLY_DATA_WRITE_RETRY:
2189 s->early_data_state = SSL_EARLY_DATA_WRITING;
2190 /*
2191 * We disable partial write for early data because we don't keep track
2192 * of how many bytes we've written between the SSL_write_ex() call and
2193 * the flush if the flush needs to be retried)
2194 */
2195 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2196 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2197 ret = SSL_write_ex(s, buf, num, &writtmp);
2198 s->mode |= partialwrite;
2199 if (!ret) {
2200 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2201 return ret;
2202 }
2203 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2204 /* fall through */
2205
2206 case SSL_EARLY_DATA_WRITE_FLUSH:
2207 /* The buffering BIO is still in place so we need to flush it */
2208 if (statem_flush(s) != 1)
2209 return 0;
2210 *written = num;
2211 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2212 return 1;
2213
2214 case SSL_EARLY_DATA_FINISHED_READING:
2215 case SSL_EARLY_DATA_READ_RETRY:
2216 early_data_state = s->early_data_state;
2217 /* We are a server writing to an unauthenticated client */
2218 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2219 ret = SSL_write_ex(s, buf, num, written);
2220 /* The buffering BIO is still in place */
2221 if (ret)
2222 (void)BIO_flush(s->wbio);
2223 s->early_data_state = early_data_state;
2224 return ret;
2225
2226 default:
2227 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2228 return 0;
2229 }
2230}
2231
2232int SSL_shutdown(SSL *s)
2233{
2234 /*
2235 * Note that this function behaves differently from what one might
2236 * expect. Return values are 0 for no success (yet), 1 for success; but
2237 * calling it once is usually not enough, even if blocking I/O is used
2238 * (see ssl3_shutdown).
2239 */
2240
2241 if (s->handshake_func == NULL) {
2242 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2243 return -1;
2244 }
2245
2246 if (!SSL_in_init(s)) {
2247 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2248 struct ssl_async_args args;
2249
2250 memset(&args, 0, sizeof(args));
2251 args.s = s;
2252 args.type = OTHERFUNC;
2253 args.f.func_other = s->method->ssl_shutdown;
2254
2255 return ssl_start_async_job(s, &args, ssl_io_intern);
2256 } else {
2257 return s->method->ssl_shutdown(s);
2258 }
2259 } else {
2260 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2261 return -1;
2262 }
2263}
2264
2265int SSL_key_update(SSL *s, int updatetype)
2266{
2267 if (!SSL_IS_TLS13(s)) {
2268 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2269 return 0;
2270 }
2271
2272 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2273 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2274 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2275 return 0;
2276 }
2277
2278 if (!SSL_is_init_finished(s)) {
2279 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2280 return 0;
2281 }
2282
2283 if (RECORD_LAYER_write_pending(&s->rlayer)) {
2284 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2285 return 0;
2286 }
2287
2288 ossl_statem_set_in_init(s, 1);
2289 s->key_update = updatetype;
2290 return 1;
2291}
2292
2293int SSL_get_key_update_type(const SSL *s)
2294{
2295 return s->key_update;
2296}
2297
2298/*
2299 * Can we accept a renegotiation request? If yes, set the flag and
2300 * return 1 if yes. If not, raise error and return 0.
2301 */
2302static int can_renegotiate(const SSL *s)
2303{
2304 if (SSL_IS_TLS13(s)) {
2305 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2306 return 0;
2307 }
2308
2309 if ((s->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2310 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2311 return 0;
2312 }
2313
2314 return 1;
2315}
2316
2317int SSL_renegotiate(SSL *s)
2318{
2319 if (!can_renegotiate(s))
2320 return 0;
2321
2322 s->renegotiate = 1;
2323 s->new_session = 1;
2324 return s->method->ssl_renegotiate(s);
2325}
2326
2327int SSL_renegotiate_abbreviated(SSL *s)
2328{
2329 if (!can_renegotiate(s))
2330 return 0;
2331
2332 s->renegotiate = 1;
2333 s->new_session = 0;
2334 return s->method->ssl_renegotiate(s);
2335}
2336
2337int SSL_renegotiate_pending(const SSL *s)
2338{
2339 /*
2340 * becomes true when negotiation is requested; false again once a
2341 * handshake has finished
2342 */
2343 return (s->renegotiate != 0);
2344}
2345
2346int SSL_new_session_ticket(SSL *s)
2347{
2348 /* If we are in init because we're sending tickets, okay to send more. */
2349 if ((SSL_in_init(s) && s->ext.extra_tickets_expected == 0)
2350 || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2351 || !SSL_IS_TLS13(s))
2352 return 0;
2353 s->ext.extra_tickets_expected++;
2354 if (!RECORD_LAYER_write_pending(&s->rlayer) && !SSL_in_init(s))
2355 ossl_statem_set_in_init(s, 1);
2356 return 1;
2357}
2358
2359long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2360{
2361 long l;
2362
2363 switch (cmd) {
2364 case SSL_CTRL_GET_READ_AHEAD:
2365 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2366 case SSL_CTRL_SET_READ_AHEAD:
2367 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2368 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2369 return l;
2370
2371 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2372 s->msg_callback_arg = parg;
2373 return 1;
2374
2375 case SSL_CTRL_MODE:
2376 return (s->mode |= larg);
2377 case SSL_CTRL_CLEAR_MODE:
2378 return (s->mode &= ~larg);
2379 case SSL_CTRL_GET_MAX_CERT_LIST:
2380 return (long)s->max_cert_list;
2381 case SSL_CTRL_SET_MAX_CERT_LIST:
2382 if (larg < 0)
2383 return 0;
2384 l = (long)s->max_cert_list;
2385 s->max_cert_list = (size_t)larg;
2386 return l;
2387 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2388 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2389 return 0;
2390#ifndef OPENSSL_NO_KTLS
2391 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2392 return 0;
2393#endif /* OPENSSL_NO_KTLS */
2394 s->max_send_fragment = larg;
2395 if (s->max_send_fragment < s->split_send_fragment)
2396 s->split_send_fragment = s->max_send_fragment;
2397 return 1;
2398 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2399 if ((size_t)larg > s->max_send_fragment || larg == 0)
2400 return 0;
2401 s->split_send_fragment = larg;
2402 return 1;
2403 case SSL_CTRL_SET_MAX_PIPELINES:
2404 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2405 return 0;
2406 s->max_pipelines = larg;
2407 if (larg > 1)
2408 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2409 return 1;
2410 case SSL_CTRL_GET_RI_SUPPORT:
2411 return s->s3.send_connection_binding;
2412 case SSL_CTRL_SET_RETRY_VERIFY:
2413 s->rwstate = SSL_RETRY_VERIFY;
2414 return 1;
2415 case SSL_CTRL_CERT_FLAGS:
2416 return (s->cert->cert_flags |= larg);
2417 case SSL_CTRL_CLEAR_CERT_FLAGS:
2418 return (s->cert->cert_flags &= ~larg);
2419
2420 case SSL_CTRL_GET_RAW_CIPHERLIST:
2421 if (parg) {
2422 if (s->s3.tmp.ciphers_raw == NULL)
2423 return 0;
2424 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2425 return (int)s->s3.tmp.ciphers_rawlen;
2426 } else {
2427 return TLS_CIPHER_LEN;
2428 }
2429 case SSL_CTRL_GET_EXTMS_SUPPORT:
2430 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2431 return -1;
2432 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2433 return 1;
2434 else
2435 return 0;
2436 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2437 return ssl_check_allowed_versions(larg, s->max_proto_version)
2438 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2439 &s->min_proto_version);
2440 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2441 return s->min_proto_version;
2442 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2443 return ssl_check_allowed_versions(s->min_proto_version, larg)
2444 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2445 &s->max_proto_version);
2446 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2447 return s->max_proto_version;
2448 default:
2449 return s->method->ssl_ctrl(s, cmd, larg, parg);
2450 }
2451}
2452
2453long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2454{
2455 switch (cmd) {
2456 case SSL_CTRL_SET_MSG_CALLBACK:
2457 s->msg_callback = (void (*)
2458 (int write_p, int version, int content_type,
2459 const void *buf, size_t len, SSL *ssl,
2460 void *arg))(fp);
2461 return 1;
2462
2463 default:
2464 return s->method->ssl_callback_ctrl(s, cmd, fp);
2465 }
2466}
2467
2468LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2469{
2470 return ctx->sessions;
2471}
2472
2473static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2474{
2475 int res = 0;
2476
2477 if (ssl_tsan_lock(ctx)) {
2478 res = tsan_load(stat);
2479 ssl_tsan_unlock(ctx);
2480 }
2481 return res;
2482}
2483
2484long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2485{
2486 long l;
2487 /* For some cases with ctx == NULL perform syntax checks */
2488 if (ctx == NULL) {
2489 switch (cmd) {
2490 case SSL_CTRL_SET_GROUPS_LIST:
2491 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2492 case SSL_CTRL_SET_SIGALGS_LIST:
2493 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2494 return tls1_set_sigalgs_list(NULL, parg, 0);
2495 default:
2496 return 0;
2497 }
2498 }
2499
2500 switch (cmd) {
2501 case SSL_CTRL_GET_READ_AHEAD:
2502 return ctx->read_ahead;
2503 case SSL_CTRL_SET_READ_AHEAD:
2504 l = ctx->read_ahead;
2505 ctx->read_ahead = larg;
2506 return l;
2507
2508 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2509 ctx->msg_callback_arg = parg;
2510 return 1;
2511
2512 case SSL_CTRL_GET_MAX_CERT_LIST:
2513 return (long)ctx->max_cert_list;
2514 case SSL_CTRL_SET_MAX_CERT_LIST:
2515 if (larg < 0)
2516 return 0;
2517 l = (long)ctx->max_cert_list;
2518 ctx->max_cert_list = (size_t)larg;
2519 return l;
2520
2521 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2522 if (larg < 0)
2523 return 0;
2524 l = (long)ctx->session_cache_size;
2525 ctx->session_cache_size = (size_t)larg;
2526 return l;
2527 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2528 return (long)ctx->session_cache_size;
2529 case SSL_CTRL_SET_SESS_CACHE_MODE:
2530 l = ctx->session_cache_mode;
2531 ctx->session_cache_mode = larg;
2532 return l;
2533 case SSL_CTRL_GET_SESS_CACHE_MODE:
2534 return ctx->session_cache_mode;
2535
2536 case SSL_CTRL_SESS_NUMBER:
2537 return lh_SSL_SESSION_num_items(ctx->sessions);
2538 case SSL_CTRL_SESS_CONNECT:
2539 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2540 case SSL_CTRL_SESS_CONNECT_GOOD:
2541 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2542 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2543 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2544 case SSL_CTRL_SESS_ACCEPT:
2545 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2546 case SSL_CTRL_SESS_ACCEPT_GOOD:
2547 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2548 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2549 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2550 case SSL_CTRL_SESS_HIT:
2551 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2552 case SSL_CTRL_SESS_CB_HIT:
2553 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2554 case SSL_CTRL_SESS_MISSES:
2555 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2556 case SSL_CTRL_SESS_TIMEOUTS:
2557 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2558 case SSL_CTRL_SESS_CACHE_FULL:
2559 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2560 case SSL_CTRL_MODE:
2561 return (ctx->mode |= larg);
2562 case SSL_CTRL_CLEAR_MODE:
2563 return (ctx->mode &= ~larg);
2564 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2565 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2566 return 0;
2567 ctx->max_send_fragment = larg;
2568 if (ctx->max_send_fragment < ctx->split_send_fragment)
2569 ctx->split_send_fragment = ctx->max_send_fragment;
2570 return 1;
2571 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2572 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2573 return 0;
2574 ctx->split_send_fragment = larg;
2575 return 1;
2576 case SSL_CTRL_SET_MAX_PIPELINES:
2577 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2578 return 0;
2579 ctx->max_pipelines = larg;
2580 return 1;
2581 case SSL_CTRL_CERT_FLAGS:
2582 return (ctx->cert->cert_flags |= larg);
2583 case SSL_CTRL_CLEAR_CERT_FLAGS:
2584 return (ctx->cert->cert_flags &= ~larg);
2585 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2586 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2587 && ssl_set_version_bound(ctx->method->version, (int)larg,
2588 &ctx->min_proto_version);
2589 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2590 return ctx->min_proto_version;
2591 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2592 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2593 && ssl_set_version_bound(ctx->method->version, (int)larg,
2594 &ctx->max_proto_version);
2595 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2596 return ctx->max_proto_version;
2597 default:
2598 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2599 }
2600}
2601
2602long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2603{
2604 switch (cmd) {
2605 case SSL_CTRL_SET_MSG_CALLBACK:
2606 ctx->msg_callback = (void (*)
2607 (int write_p, int version, int content_type,
2608 const void *buf, size_t len, SSL *ssl,
2609 void *arg))(fp);
2610 return 1;
2611
2612 default:
2613 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2614 }
2615}
2616
2617int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2618{
2619 if (a->id > b->id)
2620 return 1;
2621 if (a->id < b->id)
2622 return -1;
2623 return 0;
2624}
2625
2626int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2627 const SSL_CIPHER *const *bp)
2628{
2629 if ((*ap)->id > (*bp)->id)
2630 return 1;
2631 if ((*ap)->id < (*bp)->id)
2632 return -1;
2633 return 0;
2634}
2635
2636/** return a STACK of the ciphers available for the SSL and in order of
2637 * preference */
2638STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2639{
2640 if (s != NULL) {
2641 if (s->cipher_list != NULL) {
2642 return s->cipher_list;
2643 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2644 return s->ctx->cipher_list;
2645 }
2646 }
2647 return NULL;
2648}
2649
2650STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2651{
2652 if ((s == NULL) || !s->server)
2653 return NULL;
2654 return s->peer_ciphers;
2655}
2656
2657STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2658{
2659 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2660 int i;
2661
2662 ciphers = SSL_get_ciphers(s);
2663 if (!ciphers)
2664 return NULL;
2665 if (!ssl_set_client_disabled(s))
2666 return NULL;
2667 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2668 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2669 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2670 if (!sk)
2671 sk = sk_SSL_CIPHER_new_null();
2672 if (!sk)
2673 return NULL;
2674 if (!sk_SSL_CIPHER_push(sk, c)) {
2675 sk_SSL_CIPHER_free(sk);
2676 return NULL;
2677 }
2678 }
2679 }
2680 return sk;
2681}
2682
2683/** return a STACK of the ciphers available for the SSL and in order of
2684 * algorithm id */
2685STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2686{
2687 if (s != NULL) {
2688 if (s->cipher_list_by_id != NULL) {
2689 return s->cipher_list_by_id;
2690 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2691 return s->ctx->cipher_list_by_id;
2692 }
2693 }
2694 return NULL;
2695}
2696
2697/** The old interface to get the same thing as SSL_get_ciphers() */
2698const char *SSL_get_cipher_list(const SSL *s, int n)
2699{
2700 const SSL_CIPHER *c;
2701 STACK_OF(SSL_CIPHER) *sk;
2702
2703 if (s == NULL)
2704 return NULL;
2705 sk = SSL_get_ciphers(s);
2706 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2707 return NULL;
2708 c = sk_SSL_CIPHER_value(sk, n);
2709 if (c == NULL)
2710 return NULL;
2711 return c->name;
2712}
2713
2714/** return a STACK of the ciphers available for the SSL_CTX and in order of
2715 * preference */
2716STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2717{
2718 if (ctx != NULL)
2719 return ctx->cipher_list;
2720 return NULL;
2721}
2722
2723/*
2724 * Distinguish between ciphers controlled by set_ciphersuite() and
2725 * set_cipher_list() when counting.
2726 */
2727static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2728{
2729 int i, num = 0;
2730 const SSL_CIPHER *c;
2731
2732 if (sk == NULL)
2733 return 0;
2734 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2735 c = sk_SSL_CIPHER_value(sk, i);
2736 if (c->min_tls >= TLS1_3_VERSION)
2737 continue;
2738 num++;
2739 }
2740 return num;
2741}
2742
2743/** specify the ciphers to be used by default by the SSL_CTX */
2744int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2745{
2746 STACK_OF(SSL_CIPHER) *sk;
2747
2748 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
2749 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2750 ctx->cert);
2751 /*
2752 * ssl_create_cipher_list may return an empty stack if it was unable to
2753 * find a cipher matching the given rule string (for example if the rule
2754 * string specifies a cipher which has been disabled). This is not an
2755 * error as far as ssl_create_cipher_list is concerned, and hence
2756 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2757 */
2758 if (sk == NULL)
2759 return 0;
2760 else if (cipher_list_tls12_num(sk) == 0) {
2761 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
2762 return 0;
2763 }
2764 return 1;
2765}
2766
2767/** specify the ciphers to be used by the SSL */
2768int SSL_set_cipher_list(SSL *s, const char *str)
2769{
2770 STACK_OF(SSL_CIPHER) *sk;
2771
2772 sk = ssl_create_cipher_list(s->ctx, s->tls13_ciphersuites,
2773 &s->cipher_list, &s->cipher_list_by_id, str,
2774 s->cert);
2775 /* see comment in SSL_CTX_set_cipher_list */
2776 if (sk == NULL)
2777 return 0;
2778 else if (cipher_list_tls12_num(sk) == 0) {
2779 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
2780 return 0;
2781 }
2782 return 1;
2783}
2784
2785char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2786{
2787 char *p;
2788 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2789 const SSL_CIPHER *c;
2790 int i;
2791
2792 if (!s->server
2793 || s->peer_ciphers == NULL
2794 || size < 2)
2795 return NULL;
2796
2797 p = buf;
2798 clntsk = s->peer_ciphers;
2799 srvrsk = SSL_get_ciphers(s);
2800 if (clntsk == NULL || srvrsk == NULL)
2801 return NULL;
2802
2803 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2804 return NULL;
2805
2806 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2807 int n;
2808
2809 c = sk_SSL_CIPHER_value(clntsk, i);
2810 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2811 continue;
2812
2813 n = OPENSSL_strnlen(c->name, size);
2814 if (n >= size) {
2815 if (p != buf)
2816 --p;
2817 *p = '\0';
2818 return buf;
2819 }
2820 memcpy(p, c->name, n);
2821 p += n;
2822 *(p++) = ':';
2823 size -= n + 1;
2824 }
2825 p[-1] = '\0';
2826 return buf;
2827}
2828
2829/**
2830 * Return the requested servername (SNI) value. Note that the behaviour varies
2831 * depending on:
2832 * - whether this is called by the client or the server,
2833 * - if we are before or during/after the handshake,
2834 * - if a resumption or normal handshake is being attempted/has occurred
2835 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2836 *
2837 * Note that only the host_name type is defined (RFC 3546).
2838 */
2839const char *SSL_get_servername(const SSL *s, const int type)
2840{
2841 /*
2842 * If we don't know if we are the client or the server yet then we assume
2843 * client.
2844 */
2845 int server = s->handshake_func == NULL ? 0 : s->server;
2846 if (type != TLSEXT_NAMETYPE_host_name)
2847 return NULL;
2848
2849 if (server) {
2850 /**
2851 * Server side
2852 * In TLSv1.3 on the server SNI is not associated with the session
2853 * but in TLSv1.2 or below it is.
2854 *
2855 * Before the handshake:
2856 * - return NULL
2857 *
2858 * During/after the handshake (TLSv1.2 or below resumption occurred):
2859 * - If a servername was accepted by the server in the original
2860 * handshake then it will return that servername, or NULL otherwise.
2861 *
2862 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2863 * - The function will return the servername requested by the client in
2864 * this handshake or NULL if none was requested.
2865 */
2866 if (s->hit && !SSL_IS_TLS13(s))
2867 return s->session->ext.hostname;
2868 } else {
2869 /**
2870 * Client side
2871 *
2872 * Before the handshake:
2873 * - If a servername has been set via a call to
2874 * SSL_set_tlsext_host_name() then it will return that servername
2875 * - If one has not been set, but a TLSv1.2 resumption is being
2876 * attempted and the session from the original handshake had a
2877 * servername accepted by the server then it will return that
2878 * servername
2879 * - Otherwise it returns NULL
2880 *
2881 * During/after the handshake (TLSv1.2 or below resumption occurred):
2882 * - If the session from the original handshake had a servername accepted
2883 * by the server then it will return that servername.
2884 * - Otherwise it returns the servername set via
2885 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2886 *
2887 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2888 * - It will return the servername set via SSL_set_tlsext_host_name()
2889 * (or NULL if it was not called).
2890 */
2891 if (SSL_in_before(s)) {
2892 if (s->ext.hostname == NULL
2893 && s->session != NULL
2894 && s->session->ssl_version != TLS1_3_VERSION)
2895 return s->session->ext.hostname;
2896 } else {
2897 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2898 return s->session->ext.hostname;
2899 }
2900 }
2901
2902 return s->ext.hostname;
2903}
2904
2905int SSL_get_servername_type(const SSL *s)
2906{
2907 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2908 return TLSEXT_NAMETYPE_host_name;
2909 return -1;
2910}
2911
2912/*
2913 * SSL_select_next_proto implements the standard protocol selection. It is
2914 * expected that this function is called from the callback set by
2915 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2916 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2917 * not included in the length. A byte string of length 0 is invalid. No byte
2918 * string may be truncated. The current, but experimental algorithm for
2919 * selecting the protocol is: 1) If the server doesn't support NPN then this
2920 * is indicated to the callback. In this case, the client application has to
2921 * abort the connection or have a default application level protocol. 2) If
2922 * the server supports NPN, but advertises an empty list then the client
2923 * selects the first protocol in its list, but indicates via the API that this
2924 * fallback case was enacted. 3) Otherwise, the client finds the first
2925 * protocol in the server's list that it supports and selects this protocol.
2926 * This is because it's assumed that the server has better information about
2927 * which protocol a client should use. 4) If the client doesn't support any
2928 * of the server's advertised protocols, then this is treated the same as
2929 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2930 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2931 */
2932int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2933 const unsigned char *server,
2934 unsigned int server_len,
2935 const unsigned char *client, unsigned int client_len)
2936{
2937 unsigned int i, j;
2938 const unsigned char *result;
2939 int status = OPENSSL_NPN_UNSUPPORTED;
2940
2941 /*
2942 * For each protocol in server preference order, see if we support it.
2943 */
2944 for (i = 0; i < server_len;) {
2945 for (j = 0; j < client_len;) {
2946 if (server[i] == client[j] &&
2947 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2948 /* We found a match */
2949 result = &server[i];
2950 status = OPENSSL_NPN_NEGOTIATED;
2951 goto found;
2952 }
2953 j += client[j];
2954 j++;
2955 }
2956 i += server[i];
2957 i++;
2958 }
2959
2960 /* There's no overlap between our protocols and the server's list. */
2961 result = client;
2962 status = OPENSSL_NPN_NO_OVERLAP;
2963
2964 found:
2965 *out = (unsigned char *)result + 1;
2966 *outlen = result[0];
2967 return status;
2968}
2969
2970#ifndef OPENSSL_NO_NEXTPROTONEG
2971/*
2972 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2973 * client's requested protocol for this connection and returns 0. If the
2974 * client didn't request any protocol, then *data is set to NULL. Note that
2975 * the client can request any protocol it chooses. The value returned from
2976 * this function need not be a member of the list of supported protocols
2977 * provided by the callback.
2978 */
2979void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2980 unsigned *len)
2981{
2982 *data = s->ext.npn;
2983 if (*data == NULL) {
2984 *len = 0;
2985 } else {
2986 *len = (unsigned int)s->ext.npn_len;
2987 }
2988}
2989
2990/*
2991 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2992 * a TLS server needs a list of supported protocols for Next Protocol
2993 * Negotiation. The returned list must be in wire format. The list is
2994 * returned by setting |out| to point to it and |outlen| to its length. This
2995 * memory will not be modified, but one should assume that the SSL* keeps a
2996 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2997 * wishes to advertise. Otherwise, no such extension will be included in the
2998 * ServerHello.
2999 */
3000void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3001 SSL_CTX_npn_advertised_cb_func cb,
3002 void *arg)
3003{
3004 ctx->ext.npn_advertised_cb = cb;
3005 ctx->ext.npn_advertised_cb_arg = arg;
3006}
3007
3008/*
3009 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3010 * client needs to select a protocol from the server's provided list. |out|
3011 * must be set to point to the selected protocol (which may be within |in|).
3012 * The length of the protocol name must be written into |outlen|. The
3013 * server's advertised protocols are provided in |in| and |inlen|. The
3014 * callback can assume that |in| is syntactically valid. The client must
3015 * select a protocol. It is fatal to the connection if this callback returns
3016 * a value other than SSL_TLSEXT_ERR_OK.
3017 */
3018void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3019 SSL_CTX_npn_select_cb_func cb,
3020 void *arg)
3021{
3022 ctx->ext.npn_select_cb = cb;
3023 ctx->ext.npn_select_cb_arg = arg;
3024}
3025#endif
3026
3027static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3028{
3029 unsigned int idx;
3030
3031 if (protos_len < 2 || protos == NULL)
3032 return 0;
3033
3034 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3035 if (protos[idx] == 0)
3036 return 0;
3037 }
3038 return idx == protos_len;
3039}
3040/*
3041 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3042 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3043 * length-prefixed strings). Returns 0 on success.
3044 */
3045int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3046 unsigned int protos_len)
3047{
3048 unsigned char *alpn;
3049
3050 if (protos_len == 0 || protos == NULL) {
3051 OPENSSL_free(ctx->ext.alpn);
3052 ctx->ext.alpn = NULL;
3053 ctx->ext.alpn_len = 0;
3054 return 0;
3055 }
3056 /* Not valid per RFC */
3057 if (!alpn_value_ok(protos, protos_len))
3058 return 1;
3059
3060 alpn = OPENSSL_memdup(protos, protos_len);
3061 if (alpn == NULL) {
3062 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3063 return 1;
3064 }
3065 OPENSSL_free(ctx->ext.alpn);
3066 ctx->ext.alpn = alpn;
3067 ctx->ext.alpn_len = protos_len;
3068
3069 return 0;
3070}
3071
3072/*
3073 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3074 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3075 * length-prefixed strings). Returns 0 on success.
3076 */
3077int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3078 unsigned int protos_len)
3079{
3080 unsigned char *alpn;
3081
3082 if (protos_len == 0 || protos == NULL) {
3083 OPENSSL_free(ssl->ext.alpn);
3084 ssl->ext.alpn = NULL;
3085 ssl->ext.alpn_len = 0;
3086 return 0;
3087 }
3088 /* Not valid per RFC */
3089 if (!alpn_value_ok(protos, protos_len))
3090 return 1;
3091
3092 alpn = OPENSSL_memdup(protos, protos_len);
3093 if (alpn == NULL) {
3094 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3095 return 1;
3096 }
3097 OPENSSL_free(ssl->ext.alpn);
3098 ssl->ext.alpn = alpn;
3099 ssl->ext.alpn_len = protos_len;
3100
3101 return 0;
3102}
3103
3104/*
3105 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3106 * called during ClientHello processing in order to select an ALPN protocol
3107 * from the client's list of offered protocols.
3108 */
3109void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3110 SSL_CTX_alpn_select_cb_func cb,
3111 void *arg)
3112{
3113 ctx->ext.alpn_select_cb = cb;
3114 ctx->ext.alpn_select_cb_arg = arg;
3115}
3116
3117/*
3118 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3119 * On return it sets |*data| to point to |*len| bytes of protocol name
3120 * (not including the leading length-prefix byte). If the server didn't
3121 * respond with a negotiated protocol then |*len| will be zero.
3122 */
3123void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3124 unsigned int *len)
3125{
3126 *data = ssl->s3.alpn_selected;
3127 if (*data == NULL)
3128 *len = 0;
3129 else
3130 *len = (unsigned int)ssl->s3.alpn_selected_len;
3131}
3132
3133int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3134 const char *label, size_t llen,
3135 const unsigned char *context, size_t contextlen,
3136 int use_context)
3137{
3138 if (s->session == NULL
3139 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3140 return -1;
3141
3142 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3143 llen, context,
3144 contextlen, use_context);
3145}
3146
3147int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3148 const char *label, size_t llen,
3149 const unsigned char *context,
3150 size_t contextlen)
3151{
3152 if (s->version != TLS1_3_VERSION)
3153 return 0;
3154
3155 return tls13_export_keying_material_early(s, out, olen, label, llen,
3156 context, contextlen);
3157}
3158
3159static unsigned long ssl_session_hash(const SSL_SESSION *a)
3160{
3161 const unsigned char *session_id = a->session_id;
3162 unsigned long l;
3163 unsigned char tmp_storage[4];
3164
3165 if (a->session_id_length < sizeof(tmp_storage)) {
3166 memset(tmp_storage, 0, sizeof(tmp_storage));
3167 memcpy(tmp_storage, a->session_id, a->session_id_length);
3168 session_id = tmp_storage;
3169 }
3170
3171 l = (unsigned long)
3172 ((unsigned long)session_id[0]) |
3173 ((unsigned long)session_id[1] << 8L) |
3174 ((unsigned long)session_id[2] << 16L) |
3175 ((unsigned long)session_id[3] << 24L);
3176 return l;
3177}
3178
3179/*
3180 * NB: If this function (or indeed the hash function which uses a sort of
3181 * coarser function than this one) is changed, ensure
3182 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3183 * being able to construct an SSL_SESSION that will collide with any existing
3184 * session with a matching session ID.
3185 */
3186static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3187{
3188 if (a->ssl_version != b->ssl_version)
3189 return 1;
3190 if (a->session_id_length != b->session_id_length)
3191 return 1;
3192 return memcmp(a->session_id, b->session_id, a->session_id_length);
3193}
3194
3195/*
3196 * These wrapper functions should remain rather than redeclaring
3197 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3198 * variable. The reason is that the functions aren't static, they're exposed
3199 * via ssl.h.
3200 */
3201
3202SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3203 const SSL_METHOD *meth)
3204{
3205 SSL_CTX *ret = NULL;
3206
3207 if (meth == NULL) {
3208 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3209 return NULL;
3210 }
3211
3212 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3213 return NULL;
3214
3215 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3216 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3217 goto err;
3218 }
3219 ret = OPENSSL_zalloc(sizeof(*ret));
3220 if (ret == NULL)
3221 goto err;
3222
3223 /* Init the reference counting before any call to SSL_CTX_free */
3224 ret->references = 1;
3225 ret->lock = CRYPTO_THREAD_lock_new();
3226 if (ret->lock == NULL) {
3227 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3228 OPENSSL_free(ret);
3229 return NULL;
3230 }
3231
3232#ifdef TSAN_REQUIRES_LOCKING
3233 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3234 if (ret->tsan_lock == NULL) {
3235 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3236 goto err;
3237 }
3238#endif
3239
3240 ret->libctx = libctx;
3241 if (propq != NULL) {
3242 ret->propq = OPENSSL_strdup(propq);
3243 if (ret->propq == NULL)
3244 goto err;
3245 }
3246
3247 ret->method = meth;
3248 ret->min_proto_version = 0;
3249 ret->max_proto_version = 0;
3250 ret->mode = SSL_MODE_AUTO_RETRY;
3251 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3252 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3253 /* We take the system default. */
3254 ret->session_timeout = meth->get_timeout();
3255 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3256 ret->verify_mode = SSL_VERIFY_NONE;
3257 if ((ret->cert = ssl_cert_new()) == NULL)
3258 goto err;
3259
3260 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3261 if (ret->sessions == NULL)
3262 goto err;
3263 ret->cert_store = X509_STORE_new();
3264 if (ret->cert_store == NULL)
3265 goto err;
3266#ifndef OPENSSL_NO_CT
3267 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3268 if (ret->ctlog_store == NULL)
3269 goto err;
3270#endif
3271
3272 /* initialize cipher/digest methods table */
3273 if (!ssl_load_ciphers(ret))
3274 goto err2;
3275 /* initialise sig algs */
3276 if (!ssl_setup_sig_algs(ret))
3277 goto err2;
3278
3279
3280 if (!ssl_load_groups(ret))
3281 goto err2;
3282
3283 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3284 goto err;
3285
3286 if (!ssl_create_cipher_list(ret,
3287 ret->tls13_ciphersuites,
3288 &ret->cipher_list, &ret->cipher_list_by_id,
3289 OSSL_default_cipher_list(), ret->cert)
3290 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3291 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3292 goto err2;
3293 }
3294
3295 ret->param = X509_VERIFY_PARAM_new();
3296 if (ret->param == NULL)
3297 goto err;
3298
3299 /*
3300 * If these aren't available from the provider we'll get NULL returns.
3301 * That's fine but will cause errors later if SSLv3 is negotiated
3302 */
3303 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3304 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3305
3306 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3307 goto err;
3308
3309 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3310 goto err;
3311
3312 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3313 goto err;
3314
3315 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3316 goto err;
3317
3318 /* No compression for DTLS */
3319 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3320 ret->comp_methods = SSL_COMP_get_compression_methods();
3321
3322 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3323 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3324
3325 /* Setup RFC5077 ticket keys */
3326 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3327 sizeof(ret->ext.tick_key_name), 0) <= 0)
3328 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3329 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3330 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3331 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3332 ret->options |= SSL_OP_NO_TICKET;
3333
3334 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3335 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3336 goto err;
3337
3338#ifndef OPENSSL_NO_SRP
3339 if (!ssl_ctx_srp_ctx_init_intern(ret))
3340 goto err;
3341#endif
3342#ifndef OPENSSL_NO_ENGINE
3343# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3344# define eng_strx(x) #x
3345# define eng_str(x) eng_strx(x)
3346 /* Use specific client engine automatically... ignore errors */
3347 {
3348 ENGINE *eng;
3349 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3350 if (!eng) {
3351 ERR_clear_error();
3352 ENGINE_load_builtin_engines();
3353 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3354 }
3355 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3356 ERR_clear_error();
3357 }
3358# endif
3359#endif
3360 /*
3361 * Disable compression by default to prevent CRIME. Applications can
3362 * re-enable compression by configuring
3363 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3364 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3365 * middlebox compatibility by default. This may be disabled by default in
3366 * a later OpenSSL version.
3367 */
3368 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3369
3370 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3371
3372 /*
3373 * We cannot usefully set a default max_early_data here (which gets
3374 * propagated in SSL_new(), for the following reason: setting the
3375 * SSL field causes tls_construct_stoc_early_data() to tell the
3376 * client that early data will be accepted when constructing a TLS 1.3
3377 * session ticket, and the client will accordingly send us early data
3378 * when using that ticket (if the client has early data to send).
3379 * However, in order for the early data to actually be consumed by
3380 * the application, the application must also have calls to
3381 * SSL_read_early_data(); otherwise we'll just skip past the early data
3382 * and ignore it. So, since the application must add calls to
3383 * SSL_read_early_data(), we also require them to add
3384 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3385 * eliminating the bandwidth-wasting early data in the case described
3386 * above.
3387 */
3388 ret->max_early_data = 0;
3389
3390 /*
3391 * Default recv_max_early_data is a fully loaded single record. Could be
3392 * split across multiple records in practice. We set this differently to
3393 * max_early_data so that, in the default case, we do not advertise any
3394 * support for early_data, but if a client were to send us some (e.g.
3395 * because of an old, stale ticket) then we will tolerate it and skip over
3396 * it.
3397 */
3398 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3399
3400 /* By default we send two session tickets automatically in TLSv1.3 */
3401 ret->num_tickets = 2;
3402
3403 ssl_ctx_system_config(ret);
3404
3405 return ret;
3406 err:
3407 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3408 err2:
3409 SSL_CTX_free(ret);
3410 return NULL;
3411}
3412
3413SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3414{
3415 return SSL_CTX_new_ex(NULL, NULL, meth);
3416}
3417
3418int SSL_CTX_up_ref(SSL_CTX *ctx)
3419{
3420 int i;
3421
3422 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3423 return 0;
3424
3425 REF_PRINT_COUNT("SSL_CTX", ctx);
3426 REF_ASSERT_ISNT(i < 2);
3427 return ((i > 1) ? 1 : 0);
3428}
3429
3430void SSL_CTX_free(SSL_CTX *a)
3431{
3432 int i;
3433 size_t j;
3434
3435 if (a == NULL)
3436 return;
3437
3438 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3439 REF_PRINT_COUNT("SSL_CTX", a);
3440 if (i > 0)
3441 return;
3442 REF_ASSERT_ISNT(i < 0);
3443
3444 X509_VERIFY_PARAM_free(a->param);
3445 dane_ctx_final(&a->dane);
3446
3447 /*
3448 * Free internal session cache. However: the remove_cb() may reference
3449 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3450 * after the sessions were flushed.
3451 * As the ex_data handling routines might also touch the session cache,
3452 * the most secure solution seems to be: empty (flush) the cache, then
3453 * free ex_data, then finally free the cache.
3454 * (See ticket [openssl.org #212].)
3455 */
3456 if (a->sessions != NULL)
3457 SSL_CTX_flush_sessions(a, 0);
3458
3459 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3460 lh_SSL_SESSION_free(a->sessions);
3461 X509_STORE_free(a->cert_store);
3462#ifndef OPENSSL_NO_CT
3463 CTLOG_STORE_free(a->ctlog_store);
3464#endif
3465 sk_SSL_CIPHER_free(a->cipher_list);
3466 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3467 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3468 ssl_cert_free(a->cert);
3469 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3470 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3471 sk_X509_pop_free(a->extra_certs, X509_free);
3472 a->comp_methods = NULL;
3473#ifndef OPENSSL_NO_SRTP
3474 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3475#endif
3476#ifndef OPENSSL_NO_SRP
3477 ssl_ctx_srp_ctx_free_intern(a);
3478#endif
3479#ifndef OPENSSL_NO_ENGINE
3480 tls_engine_finish(a->client_cert_engine);
3481#endif
3482
3483 OPENSSL_free(a->ext.ecpointformats);
3484 OPENSSL_free(a->ext.supportedgroups);
3485 OPENSSL_free(a->ext.supported_groups_default);
3486 OPENSSL_free(a->ext.alpn);
3487 OPENSSL_secure_free(a->ext.secure);
3488
3489 ssl_evp_md_free(a->md5);
3490 ssl_evp_md_free(a->sha1);
3491
3492 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3493 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3494 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3495 ssl_evp_md_free(a->ssl_digest_methods[j]);
3496 for (j = 0; j < a->group_list_len; j++) {
3497 OPENSSL_free(a->group_list[j].tlsname);
3498 OPENSSL_free(a->group_list[j].realname);
3499 OPENSSL_free(a->group_list[j].algorithm);
3500 }
3501 OPENSSL_free(a->group_list);
3502
3503 OPENSSL_free(a->sigalg_lookup_cache);
3504
3505 CRYPTO_THREAD_lock_free(a->lock);
3506#ifdef TSAN_REQUIRES_LOCKING
3507 CRYPTO_THREAD_lock_free(a->tsan_lock);
3508#endif
3509
3510 OPENSSL_free(a->propq);
3511
3512 OPENSSL_free(a);
3513}
3514
3515void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3516{
3517 ctx->default_passwd_callback = cb;
3518}
3519
3520void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3521{
3522 ctx->default_passwd_callback_userdata = u;
3523}
3524
3525pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3526{
3527 return ctx->default_passwd_callback;
3528}
3529
3530void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3531{
3532 return ctx->default_passwd_callback_userdata;
3533}
3534
3535void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3536{
3537 s->default_passwd_callback = cb;
3538}
3539
3540void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3541{
3542 s->default_passwd_callback_userdata = u;
3543}
3544
3545pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3546{
3547 return s->default_passwd_callback;
3548}
3549
3550void *SSL_get_default_passwd_cb_userdata(SSL *s)
3551{
3552 return s->default_passwd_callback_userdata;
3553}
3554
3555void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3556 int (*cb) (X509_STORE_CTX *, void *),
3557 void *arg)
3558{
3559 ctx->app_verify_callback = cb;
3560 ctx->app_verify_arg = arg;
3561}
3562
3563void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3564 int (*cb) (int, X509_STORE_CTX *))
3565{
3566 ctx->verify_mode = mode;
3567 ctx->default_verify_callback = cb;
3568}
3569
3570void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3571{
3572 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3573}
3574
3575void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3576{
3577 ssl_cert_set_cert_cb(c->cert, cb, arg);
3578}
3579
3580void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3581{
3582 ssl_cert_set_cert_cb(s->cert, cb, arg);
3583}
3584
3585void ssl_set_masks(SSL *s)
3586{
3587 CERT *c = s->cert;
3588 uint32_t *pvalid = s->s3.tmp.valid_flags;
3589 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3590 unsigned long mask_k, mask_a;
3591 int have_ecc_cert, ecdsa_ok;
3592
3593 if (c == NULL)
3594 return;
3595
3596 dh_tmp = (c->dh_tmp != NULL
3597 || c->dh_tmp_cb != NULL
3598 || c->dh_tmp_auto);
3599
3600 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3601 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3602 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3603 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3604 mask_k = 0;
3605 mask_a = 0;
3606
3607 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3608 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3609
3610#ifndef OPENSSL_NO_GOST
3611 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3612 mask_k |= SSL_kGOST | SSL_kGOST18;
3613 mask_a |= SSL_aGOST12;
3614 }
3615 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3616 mask_k |= SSL_kGOST | SSL_kGOST18;
3617 mask_a |= SSL_aGOST12;
3618 }
3619 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3620 mask_k |= SSL_kGOST;
3621 mask_a |= SSL_aGOST01;
3622 }
3623#endif
3624
3625 if (rsa_enc)
3626 mask_k |= SSL_kRSA;
3627
3628 if (dh_tmp)
3629 mask_k |= SSL_kDHE;
3630
3631 /*
3632 * If we only have an RSA-PSS certificate allow RSA authentication
3633 * if TLS 1.2 and peer supports it.
3634 */
3635
3636 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3637 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3638 && TLS1_get_version(s) == TLS1_2_VERSION))
3639 mask_a |= SSL_aRSA;
3640
3641 if (dsa_sign) {
3642 mask_a |= SSL_aDSS;
3643 }
3644
3645 mask_a |= SSL_aNULL;
3646
3647 /*
3648 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3649 * depending on the key usage extension.
3650 */
3651 if (have_ecc_cert) {
3652 uint32_t ex_kusage;
3653 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3654 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3655 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3656 ecdsa_ok = 0;
3657 if (ecdsa_ok)
3658 mask_a |= SSL_aECDSA;
3659 }
3660 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3661 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3662 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3663 && TLS1_get_version(s) == TLS1_2_VERSION)
3664 mask_a |= SSL_aECDSA;
3665
3666 /* Allow Ed448 for TLS 1.2 if peer supports it */
3667 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3668 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3669 && TLS1_get_version(s) == TLS1_2_VERSION)
3670 mask_a |= SSL_aECDSA;
3671
3672 mask_k |= SSL_kECDHE;
3673
3674#ifndef OPENSSL_NO_PSK
3675 mask_k |= SSL_kPSK;
3676 mask_a |= SSL_aPSK;
3677 if (mask_k & SSL_kRSA)
3678 mask_k |= SSL_kRSAPSK;
3679 if (mask_k & SSL_kDHE)
3680 mask_k |= SSL_kDHEPSK;
3681 if (mask_k & SSL_kECDHE)
3682 mask_k |= SSL_kECDHEPSK;
3683#endif
3684
3685 s->s3.tmp.mask_k = mask_k;
3686 s->s3.tmp.mask_a = mask_a;
3687}
3688
3689int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3690{
3691 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3692 /* key usage, if present, must allow signing */
3693 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3694 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3695 return 0;
3696 }
3697 }
3698 return 1; /* all checks are ok */
3699}
3700
3701int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3702 size_t *serverinfo_length)
3703{
3704 CERT_PKEY *cpk = s->s3.tmp.cert;
3705 *serverinfo_length = 0;
3706
3707 if (cpk == NULL || cpk->serverinfo == NULL)
3708 return 0;
3709
3710 *serverinfo = cpk->serverinfo;
3711 *serverinfo_length = cpk->serverinfo_length;
3712 return 1;
3713}
3714
3715void ssl_update_cache(SSL *s, int mode)
3716{
3717 int i;
3718
3719 /*
3720 * If the session_id_length is 0, we are not supposed to cache it, and it
3721 * would be rather hard to do anyway :-)
3722 */
3723 if (s->session->session_id_length == 0)
3724 return;
3725
3726 /*
3727 * If sid_ctx_length is 0 there is no specific application context
3728 * associated with this session, so when we try to resume it and
3729 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3730 * indication that this is actually a session for the proper application
3731 * context, and the *handshake* will fail, not just the resumption attempt.
3732 * Do not cache (on the server) these sessions that are not resumable
3733 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3734 */
3735 if (s->server && s->session->sid_ctx_length == 0
3736 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3737 return;
3738
3739 i = s->session_ctx->session_cache_mode;
3740 if ((i & mode) != 0
3741 && (!s->hit || SSL_IS_TLS13(s))) {
3742 /*
3743 * Add the session to the internal cache. In server side TLSv1.3 we
3744 * normally don't do this because by default it's a full stateless ticket
3745 * with only a dummy session id so there is no reason to cache it,
3746 * unless:
3747 * - we are doing early_data, in which case we cache so that we can
3748 * detect replays
3749 * - the application has set a remove_session_cb so needs to know about
3750 * session timeout events
3751 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3752 */
3753 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3754 && (!SSL_IS_TLS13(s)
3755 || !s->server
3756 || (s->max_early_data > 0
3757 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3758 || s->session_ctx->remove_session_cb != NULL
3759 || (s->options & SSL_OP_NO_TICKET) != 0))
3760 SSL_CTX_add_session(s->session_ctx, s->session);
3761
3762 /*
3763 * Add the session to the external cache. We do this even in server side
3764 * TLSv1.3 without early data because some applications just want to
3765 * know about the creation of a session and aren't doing a full cache.
3766 */
3767 if (s->session_ctx->new_session_cb != NULL) {
3768 SSL_SESSION_up_ref(s->session);
3769 if (!s->session_ctx->new_session_cb(s, s->session))
3770 SSL_SESSION_free(s->session);
3771 }
3772 }
3773
3774 /* auto flush every 255 connections */
3775 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3776 TSAN_QUALIFIER int *stat;
3777
3778 if (mode & SSL_SESS_CACHE_CLIENT)
3779 stat = &s->session_ctx->stats.sess_connect_good;
3780 else
3781 stat = &s->session_ctx->stats.sess_accept_good;
3782 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
3783 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3784 }
3785}
3786
3787const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3788{
3789 return ctx->method;
3790}
3791
3792const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3793{
3794 return s->method;
3795}
3796
3797int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3798{
3799 int ret = 1;
3800
3801 if (s->method != meth) {
3802 const SSL_METHOD *sm = s->method;
3803 int (*hf) (SSL *) = s->handshake_func;
3804
3805 if (sm->version == meth->version)
3806 s->method = meth;
3807 else {
3808 sm->ssl_free(s);
3809 s->method = meth;
3810 ret = s->method->ssl_new(s);
3811 }
3812
3813 if (hf == sm->ssl_connect)
3814 s->handshake_func = meth->ssl_connect;
3815 else if (hf == sm->ssl_accept)
3816 s->handshake_func = meth->ssl_accept;
3817 }
3818 return ret;
3819}
3820
3821int SSL_get_error(const SSL *s, int i)
3822{
3823 int reason;
3824 unsigned long l;
3825 BIO *bio;
3826
3827 if (i > 0)
3828 return SSL_ERROR_NONE;
3829
3830 /*
3831 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3832 * where we do encode the error
3833 */
3834 if ((l = ERR_peek_error()) != 0) {
3835 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3836 return SSL_ERROR_SYSCALL;
3837 else
3838 return SSL_ERROR_SSL;
3839 }
3840
3841 if (SSL_want_read(s)) {
3842 bio = SSL_get_rbio(s);
3843 if (BIO_should_read(bio))
3844 return SSL_ERROR_WANT_READ;
3845 else if (BIO_should_write(bio))
3846 /*
3847 * This one doesn't make too much sense ... We never try to write
3848 * to the rbio, and an application program where rbio and wbio
3849 * are separate couldn't even know what it should wait for.
3850 * However if we ever set s->rwstate incorrectly (so that we have
3851 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3852 * wbio *are* the same, this test works around that bug; so it
3853 * might be safer to keep it.
3854 */
3855 return SSL_ERROR_WANT_WRITE;
3856 else if (BIO_should_io_special(bio)) {
3857 reason = BIO_get_retry_reason(bio);
3858 if (reason == BIO_RR_CONNECT)
3859 return SSL_ERROR_WANT_CONNECT;
3860 else if (reason == BIO_RR_ACCEPT)
3861 return SSL_ERROR_WANT_ACCEPT;
3862 else
3863 return SSL_ERROR_SYSCALL; /* unknown */
3864 }
3865 }
3866
3867 if (SSL_want_write(s)) {
3868 /* Access wbio directly - in order to use the buffered bio if present */
3869 bio = s->wbio;
3870 if (BIO_should_write(bio))
3871 return SSL_ERROR_WANT_WRITE;
3872 else if (BIO_should_read(bio))
3873 /*
3874 * See above (SSL_want_read(s) with BIO_should_write(bio))
3875 */
3876 return SSL_ERROR_WANT_READ;
3877 else if (BIO_should_io_special(bio)) {
3878 reason = BIO_get_retry_reason(bio);
3879 if (reason == BIO_RR_CONNECT)
3880 return SSL_ERROR_WANT_CONNECT;
3881 else if (reason == BIO_RR_ACCEPT)
3882 return SSL_ERROR_WANT_ACCEPT;
3883 else
3884 return SSL_ERROR_SYSCALL;
3885 }
3886 }
3887 if (SSL_want_x509_lookup(s))
3888 return SSL_ERROR_WANT_X509_LOOKUP;
3889 if (SSL_want_retry_verify(s))
3890 return SSL_ERROR_WANT_RETRY_VERIFY;
3891 if (SSL_want_async(s))
3892 return SSL_ERROR_WANT_ASYNC;
3893 if (SSL_want_async_job(s))
3894 return SSL_ERROR_WANT_ASYNC_JOB;
3895 if (SSL_want_client_hello_cb(s))
3896 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3897
3898 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3899 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3900 return SSL_ERROR_ZERO_RETURN;
3901
3902 return SSL_ERROR_SYSCALL;
3903}
3904
3905static int ssl_do_handshake_intern(void *vargs)
3906{
3907 struct ssl_async_args *args;
3908 SSL *s;
3909
3910 args = (struct ssl_async_args *)vargs;
3911 s = args->s;
3912
3913 return s->handshake_func(s);
3914}
3915
3916int SSL_do_handshake(SSL *s)
3917{
3918 int ret = 1;
3919
3920 if (s->handshake_func == NULL) {
3921 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
3922 return -1;
3923 }
3924
3925 ossl_statem_check_finish_init(s, -1);
3926
3927 s->method->ssl_renegotiate_check(s, 0);
3928
3929 if (SSL_in_init(s) || SSL_in_before(s)) {
3930 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3931 struct ssl_async_args args;
3932
3933 memset(&args, 0, sizeof(args));
3934 args.s = s;
3935
3936 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3937 } else {
3938 ret = s->handshake_func(s);
3939 }
3940 }
3941 return ret;
3942}
3943
3944void SSL_set_accept_state(SSL *s)
3945{
3946 s->server = 1;
3947 s->shutdown = 0;
3948 ossl_statem_clear(s);
3949 s->handshake_func = s->method->ssl_accept;
3950 clear_ciphers(s);
3951}
3952
3953void SSL_set_connect_state(SSL *s)
3954{
3955 s->server = 0;
3956 s->shutdown = 0;
3957 ossl_statem_clear(s);
3958 s->handshake_func = s->method->ssl_connect;
3959 clear_ciphers(s);
3960}
3961
3962int ssl_undefined_function(SSL *s)
3963{
3964 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3965 return 0;
3966}
3967
3968int ssl_undefined_void_function(void)
3969{
3970 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3971 return 0;
3972}
3973
3974int ssl_undefined_const_function(const SSL *s)
3975{
3976 return 0;
3977}
3978
3979const SSL_METHOD *ssl_bad_method(int ver)
3980{
3981 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3982 return NULL;
3983}
3984
3985const char *ssl_protocol_to_string(int version)
3986{
3987 switch(version)
3988 {
3989 case TLS1_3_VERSION:
3990 return "TLSv1.3";
3991
3992 case TLS1_2_VERSION:
3993 return "TLSv1.2";
3994
3995 case TLS1_1_VERSION:
3996 return "TLSv1.1";
3997
3998 case TLS1_VERSION:
3999 return "TLSv1";
4000
4001 case SSL3_VERSION:
4002 return "SSLv3";
4003
4004 case DTLS1_BAD_VER:
4005 return "DTLSv0.9";
4006
4007 case DTLS1_VERSION:
4008 return "DTLSv1";
4009
4010 case DTLS1_2_VERSION:
4011 return "DTLSv1.2";
4012
4013 default:
4014 return "unknown";
4015 }
4016}
4017
4018const char *SSL_get_version(const SSL *s)
4019{
4020 return ssl_protocol_to_string(s->version);
4021}
4022
4023static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4024{
4025 STACK_OF(X509_NAME) *sk;
4026 X509_NAME *xn;
4027 int i;
4028
4029 if (src == NULL) {
4030 *dst = NULL;
4031 return 1;
4032 }
4033
4034 if ((sk = sk_X509_NAME_new_null()) == NULL)
4035 return 0;
4036 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4037 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4038 if (xn == NULL) {
4039 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4040 return 0;
4041 }
4042 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4043 X509_NAME_free(xn);
4044 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4045 return 0;
4046 }
4047 }
4048 *dst = sk;
4049
4050 return 1;
4051}
4052
4053SSL *SSL_dup(SSL *s)
4054{
4055 SSL *ret;
4056 int i;
4057
4058 /* If we're not quiescent, just up_ref! */
4059 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4060 CRYPTO_UP_REF(&s->references, &i, s->lock);
4061 return s;
4062 }
4063
4064 /*
4065 * Otherwise, copy configuration state, and session if set.
4066 */
4067 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4068 return NULL;
4069
4070 if (s->session != NULL) {
4071 /*
4072 * Arranges to share the same session via up_ref. This "copies"
4073 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4074 */
4075 if (!SSL_copy_session_id(ret, s))
4076 goto err;
4077 } else {
4078 /*
4079 * No session has been established yet, so we have to expect that
4080 * s->cert or ret->cert will be changed later -- they should not both
4081 * point to the same object, and thus we can't use
4082 * SSL_copy_session_id.
4083 */
4084 if (!SSL_set_ssl_method(ret, s->method))
4085 goto err;
4086
4087 if (s->cert != NULL) {
4088 ssl_cert_free(ret->cert);
4089 ret->cert = ssl_cert_dup(s->cert);
4090 if (ret->cert == NULL)
4091 goto err;
4092 }
4093
4094 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4095 (int)s->sid_ctx_length))
4096 goto err;
4097 }
4098
4099 if (!ssl_dane_dup(ret, s))
4100 goto err;
4101 ret->version = s->version;
4102 ret->options = s->options;
4103 ret->min_proto_version = s->min_proto_version;
4104 ret->max_proto_version = s->max_proto_version;
4105 ret->mode = s->mode;
4106 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4107 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4108 ret->msg_callback = s->msg_callback;
4109 ret->msg_callback_arg = s->msg_callback_arg;
4110 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4111 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4112 ret->generate_session_id = s->generate_session_id;
4113
4114 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4115
4116 /* copy app data, a little dangerous perhaps */
4117 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4118 goto err;
4119
4120 ret->server = s->server;
4121 if (s->handshake_func) {
4122 if (s->server)
4123 SSL_set_accept_state(ret);
4124 else
4125 SSL_set_connect_state(ret);
4126 }
4127 ret->shutdown = s->shutdown;
4128 ret->hit = s->hit;
4129
4130 ret->default_passwd_callback = s->default_passwd_callback;
4131 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4132
4133 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4134
4135 /* dup the cipher_list and cipher_list_by_id stacks */
4136 if (s->cipher_list != NULL) {
4137 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4138 goto err;
4139 }
4140 if (s->cipher_list_by_id != NULL)
4141 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4142 == NULL)
4143 goto err;
4144
4145 /* Dup the client_CA list */
4146 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4147 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4148 goto err;
4149
4150 return ret;
4151
4152 err:
4153 SSL_free(ret);
4154 return NULL;
4155}
4156
4157void ssl_clear_cipher_ctx(SSL *s)
4158{
4159 if (s->enc_read_ctx != NULL) {
4160 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4161 s->enc_read_ctx = NULL;
4162 }
4163 if (s->enc_write_ctx != NULL) {
4164 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4165 s->enc_write_ctx = NULL;
4166 }
4167#ifndef OPENSSL_NO_COMP
4168 COMP_CTX_free(s->expand);
4169 s->expand = NULL;
4170 COMP_CTX_free(s->compress);
4171 s->compress = NULL;
4172#endif
4173}
4174
4175X509 *SSL_get_certificate(const SSL *s)
4176{
4177 if (s->cert != NULL)
4178 return s->cert->key->x509;
4179 else
4180 return NULL;
4181}
4182
4183EVP_PKEY *SSL_get_privatekey(const SSL *s)
4184{
4185 if (s->cert != NULL)
4186 return s->cert->key->privatekey;
4187 else
4188 return NULL;
4189}
4190
4191X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4192{
4193 if (ctx->cert != NULL)
4194 return ctx->cert->key->x509;
4195 else
4196 return NULL;
4197}
4198
4199EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4200{
4201 if (ctx->cert != NULL)
4202 return ctx->cert->key->privatekey;
4203 else
4204 return NULL;
4205}
4206
4207const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4208{
4209 if ((s->session != NULL) && (s->session->cipher != NULL))
4210 return s->session->cipher;
4211 return NULL;
4212}
4213
4214const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4215{
4216 return s->s3.tmp.new_cipher;
4217}
4218
4219const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4220{
4221#ifndef OPENSSL_NO_COMP
4222 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4223#else
4224 return NULL;
4225#endif
4226}
4227
4228const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4229{
4230#ifndef OPENSSL_NO_COMP
4231 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4232#else
4233 return NULL;
4234#endif
4235}
4236
4237int ssl_init_wbio_buffer(SSL *s)
4238{
4239 BIO *bbio;
4240
4241 if (s->bbio != NULL) {
4242 /* Already buffered. */
4243 return 1;
4244 }
4245
4246 bbio = BIO_new(BIO_f_buffer());
4247 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
4248 BIO_free(bbio);
4249 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4250 return 0;
4251 }
4252 s->bbio = bbio;
4253 s->wbio = BIO_push(bbio, s->wbio);
4254
4255 return 1;
4256}
4257
4258int ssl_free_wbio_buffer(SSL *s)
4259{
4260 /* callers ensure s is never null */
4261 if (s->bbio == NULL)
4262 return 1;
4263
4264 s->wbio = BIO_pop(s->wbio);
4265 BIO_free(s->bbio);
4266 s->bbio = NULL;
4267
4268 return 1;
4269}
4270
4271void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4272{
4273 ctx->quiet_shutdown = mode;
4274}
4275
4276int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4277{
4278 return ctx->quiet_shutdown;
4279}
4280
4281void SSL_set_quiet_shutdown(SSL *s, int mode)
4282{
4283 s->quiet_shutdown = mode;
4284}
4285
4286int SSL_get_quiet_shutdown(const SSL *s)
4287{
4288 return s->quiet_shutdown;
4289}
4290
4291void SSL_set_shutdown(SSL *s, int mode)
4292{
4293 s->shutdown = mode;
4294}
4295
4296int SSL_get_shutdown(const SSL *s)
4297{
4298 return s->shutdown;
4299}
4300
4301int SSL_version(const SSL *s)
4302{
4303 return s->version;
4304}
4305
4306int SSL_client_version(const SSL *s)
4307{
4308 return s->client_version;
4309}
4310
4311SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4312{
4313 return ssl->ctx;
4314}
4315
4316SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4317{
4318 CERT *new_cert;
4319 if (ssl->ctx == ctx)
4320 return ssl->ctx;
4321 if (ctx == NULL)
4322 ctx = ssl->session_ctx;
4323 new_cert = ssl_cert_dup(ctx->cert);
4324 if (new_cert == NULL) {
4325 return NULL;
4326 }
4327
4328 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4329 ssl_cert_free(new_cert);
4330 return NULL;
4331 }
4332
4333 ssl_cert_free(ssl->cert);
4334 ssl->cert = new_cert;
4335
4336 /*
4337 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4338 * so setter APIs must prevent invalid lengths from entering the system.
4339 */
4340 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4341 return NULL;
4342
4343 /*
4344 * If the session ID context matches that of the parent SSL_CTX,
4345 * inherit it from the new SSL_CTX as well. If however the context does
4346 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4347 * leave it unchanged.
4348 */
4349 if ((ssl->ctx != NULL) &&
4350 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4351 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4352 ssl->sid_ctx_length = ctx->sid_ctx_length;
4353 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4354 }
4355
4356 SSL_CTX_up_ref(ctx);
4357 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4358 ssl->ctx = ctx;
4359
4360 return ssl->ctx;
4361}
4362
4363int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4364{
4365 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4366 ctx->propq);
4367}
4368
4369int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4370{
4371 X509_LOOKUP *lookup;
4372
4373 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4374 if (lookup == NULL)
4375 return 0;
4376
4377 /* We ignore errors, in case the directory doesn't exist */
4378 ERR_set_mark();
4379
4380 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4381
4382 ERR_pop_to_mark();
4383
4384 return 1;
4385}
4386
4387int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4388{
4389 X509_LOOKUP *lookup;
4390
4391 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4392 if (lookup == NULL)
4393 return 0;
4394
4395 /* We ignore errors, in case the file doesn't exist */
4396 ERR_set_mark();
4397
4398 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4399 ctx->propq);
4400
4401 ERR_pop_to_mark();
4402
4403 return 1;
4404}
4405
4406int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4407{
4408 X509_LOOKUP *lookup;
4409
4410 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4411 if (lookup == NULL)
4412 return 0;
4413
4414 /* We ignore errors, in case the directory doesn't exist */
4415 ERR_set_mark();
4416
4417 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4418
4419 ERR_pop_to_mark();
4420
4421 return 1;
4422}
4423
4424int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4425{
4426 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4427 ctx->propq);
4428}
4429
4430int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4431{
4432 return X509_STORE_load_path(ctx->cert_store, CApath);
4433}
4434
4435int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4436{
4437 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
4438 ctx->propq);
4439}
4440
4441int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4442 const char *CApath)
4443{
4444 if (CAfile == NULL && CApath == NULL)
4445 return 0;
4446 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4447 return 0;
4448 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4449 return 0;
4450 return 1;
4451}
4452
4453void SSL_set_info_callback(SSL *ssl,
4454 void (*cb) (const SSL *ssl, int type, int val))
4455{
4456 ssl->info_callback = cb;
4457}
4458
4459/*
4460 * One compiler (Diab DCC) doesn't like argument names in returned function
4461 * pointer.
4462 */
4463void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4464 int /* type */ ,
4465 int /* val */ ) {
4466 return ssl->info_callback;
4467}
4468
4469void SSL_set_verify_result(SSL *ssl, long arg)
4470{
4471 ssl->verify_result = arg;
4472}
4473
4474long SSL_get_verify_result(const SSL *ssl)
4475{
4476 return ssl->verify_result;
4477}
4478
4479size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4480{
4481 if (outlen == 0)
4482 return sizeof(ssl->s3.client_random);
4483 if (outlen > sizeof(ssl->s3.client_random))
4484 outlen = sizeof(ssl->s3.client_random);
4485 memcpy(out, ssl->s3.client_random, outlen);
4486 return outlen;
4487}
4488
4489size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4490{
4491 if (outlen == 0)
4492 return sizeof(ssl->s3.server_random);
4493 if (outlen > sizeof(ssl->s3.server_random))
4494 outlen = sizeof(ssl->s3.server_random);
4495 memcpy(out, ssl->s3.server_random, outlen);
4496 return outlen;
4497}
4498
4499size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4500 unsigned char *out, size_t outlen)
4501{
4502 if (outlen == 0)
4503 return session->master_key_length;
4504 if (outlen > session->master_key_length)
4505 outlen = session->master_key_length;
4506 memcpy(out, session->master_key, outlen);
4507 return outlen;
4508}
4509
4510int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4511 size_t len)
4512{
4513 if (len > sizeof(sess->master_key))
4514 return 0;
4515
4516 memcpy(sess->master_key, in, len);
4517 sess->master_key_length = len;
4518 return 1;
4519}
4520
4521
4522int SSL_set_ex_data(SSL *s, int idx, void *arg)
4523{
4524 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4525}
4526
4527void *SSL_get_ex_data(const SSL *s, int idx)
4528{
4529 return CRYPTO_get_ex_data(&s->ex_data, idx);
4530}
4531
4532int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4533{
4534 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4535}
4536
4537void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4538{
4539 return CRYPTO_get_ex_data(&s->ex_data, idx);
4540}
4541
4542X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4543{
4544 return ctx->cert_store;
4545}
4546
4547void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4548{
4549 X509_STORE_free(ctx->cert_store);
4550 ctx->cert_store = store;
4551}
4552
4553void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4554{
4555 if (store != NULL)
4556 X509_STORE_up_ref(store);
4557 SSL_CTX_set_cert_store(ctx, store);
4558}
4559
4560int SSL_want(const SSL *s)
4561{
4562 return s->rwstate;
4563}
4564
4565#ifndef OPENSSL_NO_PSK
4566int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4567{
4568 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4569 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
4570 return 0;
4571 }
4572 OPENSSL_free(ctx->cert->psk_identity_hint);
4573 if (identity_hint != NULL) {
4574 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4575 if (ctx->cert->psk_identity_hint == NULL)
4576 return 0;
4577 } else
4578 ctx->cert->psk_identity_hint = NULL;
4579 return 1;
4580}
4581
4582int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4583{
4584 if (s == NULL)
4585 return 0;
4586
4587 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4588 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
4589 return 0;
4590 }
4591 OPENSSL_free(s->cert->psk_identity_hint);
4592 if (identity_hint != NULL) {
4593 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4594 if (s->cert->psk_identity_hint == NULL)
4595 return 0;
4596 } else
4597 s->cert->psk_identity_hint = NULL;
4598 return 1;
4599}
4600
4601const char *SSL_get_psk_identity_hint(const SSL *s)
4602{
4603 if (s == NULL || s->session == NULL)
4604 return NULL;
4605 return s->session->psk_identity_hint;
4606}
4607
4608const char *SSL_get_psk_identity(const SSL *s)
4609{
4610 if (s == NULL || s->session == NULL)
4611 return NULL;
4612 return s->session->psk_identity;
4613}
4614
4615void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4616{
4617 s->psk_client_callback = cb;
4618}
4619
4620void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4621{
4622 ctx->psk_client_callback = cb;
4623}
4624
4625void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4626{
4627 s->psk_server_callback = cb;
4628}
4629
4630void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4631{
4632 ctx->psk_server_callback = cb;
4633}
4634#endif
4635
4636void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4637{
4638 s->psk_find_session_cb = cb;
4639}
4640
4641void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4642 SSL_psk_find_session_cb_func cb)
4643{
4644 ctx->psk_find_session_cb = cb;
4645}
4646
4647void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4648{
4649 s->psk_use_session_cb = cb;
4650}
4651
4652void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4653 SSL_psk_use_session_cb_func cb)
4654{
4655 ctx->psk_use_session_cb = cb;
4656}
4657
4658void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4659 void (*cb) (int write_p, int version,
4660 int content_type, const void *buf,
4661 size_t len, SSL *ssl, void *arg))
4662{
4663 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4664}
4665
4666void SSL_set_msg_callback(SSL *ssl,
4667 void (*cb) (int write_p, int version,
4668 int content_type, const void *buf,
4669 size_t len, SSL *ssl, void *arg))
4670{
4671 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4672}
4673
4674void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4675 int (*cb) (SSL *ssl,
4676 int
4677 is_forward_secure))
4678{
4679 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4680 (void (*)(void))cb);
4681}
4682
4683void SSL_set_not_resumable_session_callback(SSL *ssl,
4684 int (*cb) (SSL *ssl,
4685 int is_forward_secure))
4686{
4687 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4688 (void (*)(void))cb);
4689}
4690
4691void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4692 size_t (*cb) (SSL *ssl, int type,
4693 size_t len, void *arg))
4694{
4695 ctx->record_padding_cb = cb;
4696}
4697
4698void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4699{
4700 ctx->record_padding_arg = arg;
4701}
4702
4703void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4704{
4705 return ctx->record_padding_arg;
4706}
4707
4708int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4709{
4710 /* block size of 0 or 1 is basically no padding */
4711 if (block_size == 1)
4712 ctx->block_padding = 0;
4713 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4714 ctx->block_padding = block_size;
4715 else
4716 return 0;
4717 return 1;
4718}
4719
4720int SSL_set_record_padding_callback(SSL *ssl,
4721 size_t (*cb) (SSL *ssl, int type,
4722 size_t len, void *arg))
4723{
4724 BIO *b;
4725
4726 b = SSL_get_wbio(ssl);
4727 if (b == NULL || !BIO_get_ktls_send(b)) {
4728 ssl->record_padding_cb = cb;
4729 return 1;
4730 }
4731 return 0;
4732}
4733
4734void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4735{
4736 ssl->record_padding_arg = arg;
4737}
4738
4739void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4740{
4741 return ssl->record_padding_arg;
4742}
4743
4744int SSL_set_block_padding(SSL *ssl, size_t block_size)
4745{
4746 /* block size of 0 or 1 is basically no padding */
4747 if (block_size == 1)
4748 ssl->block_padding = 0;
4749 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4750 ssl->block_padding = block_size;
4751 else
4752 return 0;
4753 return 1;
4754}
4755
4756int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4757{
4758 s->num_tickets = num_tickets;
4759
4760 return 1;
4761}
4762
4763size_t SSL_get_num_tickets(const SSL *s)
4764{
4765 return s->num_tickets;
4766}
4767
4768int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4769{
4770 ctx->num_tickets = num_tickets;
4771
4772 return 1;
4773}
4774
4775size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4776{
4777 return ctx->num_tickets;
4778}
4779
4780/*
4781 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4782 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4783 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4784 * Returns the newly allocated ctx;
4785 */
4786
4787EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4788{
4789 ssl_clear_hash_ctx(hash);
4790 *hash = EVP_MD_CTX_new();
4791 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4792 EVP_MD_CTX_free(*hash);
4793 *hash = NULL;
4794 return NULL;
4795 }
4796 return *hash;
4797}
4798
4799void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4800{
4801
4802 EVP_MD_CTX_free(*hash);
4803 *hash = NULL;
4804}
4805
4806/* Retrieve handshake hashes */
4807int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4808 size_t *hashlen)
4809{
4810 EVP_MD_CTX *ctx = NULL;
4811 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4812 int hashleni = EVP_MD_CTX_get_size(hdgst);
4813 int ret = 0;
4814
4815 if (hashleni < 0 || (size_t)hashleni > outlen) {
4816 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4817 goto err;
4818 }
4819
4820 ctx = EVP_MD_CTX_new();
4821 if (ctx == NULL) {
4822 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4823 goto err;
4824 }
4825
4826 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4827 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4828 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4829 goto err;
4830 }
4831
4832 *hashlen = hashleni;
4833
4834 ret = 1;
4835 err:
4836 EVP_MD_CTX_free(ctx);
4837 return ret;
4838}
4839
4840int SSL_session_reused(const SSL *s)
4841{
4842 return s->hit;
4843}
4844
4845int SSL_is_server(const SSL *s)
4846{
4847 return s->server;
4848}
4849
4850#ifndef OPENSSL_NO_DEPRECATED_1_1_0
4851void SSL_set_debug(SSL *s, int debug)
4852{
4853 /* Old function was do-nothing anyway... */
4854 (void)s;
4855 (void)debug;
4856}
4857#endif
4858
4859void SSL_set_security_level(SSL *s, int level)
4860{
4861 s->cert->sec_level = level;
4862}
4863
4864int SSL_get_security_level(const SSL *s)
4865{
4866 return s->cert->sec_level;
4867}
4868
4869void SSL_set_security_callback(SSL *s,
4870 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4871 int op, int bits, int nid,
4872 void *other, void *ex))
4873{
4874 s->cert->sec_cb = cb;
4875}
4876
4877int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4878 const SSL_CTX *ctx, int op,
4879 int bits, int nid, void *other,
4880 void *ex) {
4881 return s->cert->sec_cb;
4882}
4883
4884void SSL_set0_security_ex_data(SSL *s, void *ex)
4885{
4886 s->cert->sec_ex = ex;
4887}
4888
4889void *SSL_get0_security_ex_data(const SSL *s)
4890{
4891 return s->cert->sec_ex;
4892}
4893
4894void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4895{
4896 ctx->cert->sec_level = level;
4897}
4898
4899int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4900{
4901 return ctx->cert->sec_level;
4902}
4903
4904void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4905 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4906 int op, int bits, int nid,
4907 void *other, void *ex))
4908{
4909 ctx->cert->sec_cb = cb;
4910}
4911
4912int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4913 const SSL_CTX *ctx,
4914 int op, int bits,
4915 int nid,
4916 void *other,
4917 void *ex) {
4918 return ctx->cert->sec_cb;
4919}
4920
4921void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4922{
4923 ctx->cert->sec_ex = ex;
4924}
4925
4926void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4927{
4928 return ctx->cert->sec_ex;
4929}
4930
4931uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
4932{
4933 return ctx->options;
4934}
4935
4936uint64_t SSL_get_options(const SSL *s)
4937{
4938 return s->options;
4939}
4940
4941uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
4942{
4943 return ctx->options |= op;
4944}
4945
4946uint64_t SSL_set_options(SSL *s, uint64_t op)
4947{
4948 return s->options |= op;
4949}
4950
4951uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
4952{
4953 return ctx->options &= ~op;
4954}
4955
4956uint64_t SSL_clear_options(SSL *s, uint64_t op)
4957{
4958 return s->options &= ~op;
4959}
4960
4961STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4962{
4963 return s->verified_chain;
4964}
4965
4966IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4967
4968#ifndef OPENSSL_NO_CT
4969
4970/*
4971 * Moves SCTs from the |src| stack to the |dst| stack.
4972 * The source of each SCT will be set to |origin|.
4973 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4974 * the caller.
4975 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4976 */
4977static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4978 sct_source_t origin)
4979{
4980 int scts_moved = 0;
4981 SCT *sct = NULL;
4982
4983 if (*dst == NULL) {
4984 *dst = sk_SCT_new_null();
4985 if (*dst == NULL) {
4986 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
4987 goto err;
4988 }
4989 }
4990
4991 while ((sct = sk_SCT_pop(src)) != NULL) {
4992 if (SCT_set_source(sct, origin) != 1)
4993 goto err;
4994
4995 if (sk_SCT_push(*dst, sct) <= 0)
4996 goto err;
4997 scts_moved += 1;
4998 }
4999
5000 return scts_moved;
5001 err:
5002 if (sct != NULL)
5003 sk_SCT_push(src, sct); /* Put the SCT back */
5004 return -1;
5005}
5006
5007/*
5008 * Look for data collected during ServerHello and parse if found.
5009 * Returns the number of SCTs extracted.
5010 */
5011static int ct_extract_tls_extension_scts(SSL *s)
5012{
5013 int scts_extracted = 0;
5014
5015 if (s->ext.scts != NULL) {
5016 const unsigned char *p = s->ext.scts;
5017 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5018
5019 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5020
5021 SCT_LIST_free(scts);
5022 }
5023
5024 return scts_extracted;
5025}
5026
5027/*
5028 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5029 * contains an SCT X509 extension. They will be stored in |s->scts|.
5030 * Returns:
5031 * - The number of SCTs extracted, assuming an OCSP response exists.
5032 * - 0 if no OCSP response exists or it contains no SCTs.
5033 * - A negative integer if an error occurs.
5034 */
5035static int ct_extract_ocsp_response_scts(SSL *s)
5036{
5037# ifndef OPENSSL_NO_OCSP
5038 int scts_extracted = 0;
5039 const unsigned char *p;
5040 OCSP_BASICRESP *br = NULL;
5041 OCSP_RESPONSE *rsp = NULL;
5042 STACK_OF(SCT) *scts = NULL;
5043 int i;
5044
5045 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5046 goto err;
5047
5048 p = s->ext.ocsp.resp;
5049 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5050 if (rsp == NULL)
5051 goto err;
5052
5053 br = OCSP_response_get1_basic(rsp);
5054 if (br == NULL)
5055 goto err;
5056
5057 for (i = 0; i < OCSP_resp_count(br); ++i) {
5058 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5059
5060 if (single == NULL)
5061 continue;
5062
5063 scts =
5064 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5065 scts_extracted =
5066 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5067 if (scts_extracted < 0)
5068 goto err;
5069 }
5070 err:
5071 SCT_LIST_free(scts);
5072 OCSP_BASICRESP_free(br);
5073 OCSP_RESPONSE_free(rsp);
5074 return scts_extracted;
5075# else
5076 /* Behave as if no OCSP response exists */
5077 return 0;
5078# endif
5079}
5080
5081/*
5082 * Attempts to extract SCTs from the peer certificate.
5083 * Return the number of SCTs extracted, or a negative integer if an error
5084 * occurs.
5085 */
5086static int ct_extract_x509v3_extension_scts(SSL *s)
5087{
5088 int scts_extracted = 0;
5089 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5090
5091 if (cert != NULL) {
5092 STACK_OF(SCT) *scts =
5093 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5094
5095 scts_extracted =
5096 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5097
5098 SCT_LIST_free(scts);
5099 }
5100
5101 return scts_extracted;
5102}
5103
5104/*
5105 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5106 * response (if it exists) and X509v3 extensions in the certificate.
5107 * Returns NULL if an error occurs.
5108 */
5109const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5110{
5111 if (!s->scts_parsed) {
5112 if (ct_extract_tls_extension_scts(s) < 0 ||
5113 ct_extract_ocsp_response_scts(s) < 0 ||
5114 ct_extract_x509v3_extension_scts(s) < 0)
5115 goto err;
5116
5117 s->scts_parsed = 1;
5118 }
5119 return s->scts;
5120 err:
5121 return NULL;
5122}
5123
5124static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5125 const STACK_OF(SCT) *scts, void *unused_arg)
5126{
5127 return 1;
5128}
5129
5130static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5131 const STACK_OF(SCT) *scts, void *unused_arg)
5132{
5133 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5134 int i;
5135
5136 for (i = 0; i < count; ++i) {
5137 SCT *sct = sk_SCT_value(scts, i);
5138 int status = SCT_get_validation_status(sct);
5139
5140 if (status == SCT_VALIDATION_STATUS_VALID)
5141 return 1;
5142 }
5143 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5144 return 0;
5145}
5146
5147int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5148 void *arg)
5149{
5150 /*
5151 * Since code exists that uses the custom extension handler for CT, look
5152 * for this and throw an error if they have already registered to use CT.
5153 */
5154 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5155 TLSEXT_TYPE_signed_certificate_timestamp))
5156 {
5157 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5158 return 0;
5159 }
5160
5161 if (callback != NULL) {
5162 /*
5163 * If we are validating CT, then we MUST accept SCTs served via OCSP
5164 */
5165 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5166 return 0;
5167 }
5168
5169 s->ct_validation_callback = callback;
5170 s->ct_validation_callback_arg = arg;
5171
5172 return 1;
5173}
5174
5175int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5176 ssl_ct_validation_cb callback, void *arg)
5177{
5178 /*
5179 * Since code exists that uses the custom extension handler for CT, look for
5180 * this and throw an error if they have already registered to use CT.
5181 */
5182 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5183 TLSEXT_TYPE_signed_certificate_timestamp))
5184 {
5185 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5186 return 0;
5187 }
5188
5189 ctx->ct_validation_callback = callback;
5190 ctx->ct_validation_callback_arg = arg;
5191 return 1;
5192}
5193
5194int SSL_ct_is_enabled(const SSL *s)
5195{
5196 return s->ct_validation_callback != NULL;
5197}
5198
5199int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5200{
5201 return ctx->ct_validation_callback != NULL;
5202}
5203
5204int ssl_validate_ct(SSL *s)
5205{
5206 int ret = 0;
5207 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5208 X509 *issuer;
5209 SSL_DANE *dane = &s->dane;
5210 CT_POLICY_EVAL_CTX *ctx = NULL;
5211 const STACK_OF(SCT) *scts;
5212
5213 /*
5214 * If no callback is set, the peer is anonymous, or its chain is invalid,
5215 * skip SCT validation - just return success. Applications that continue
5216 * handshakes without certificates, with unverified chains, or pinned leaf
5217 * certificates are outside the scope of the WebPKI and CT.
5218 *
5219 * The above exclusions notwithstanding the vast majority of peers will
5220 * have rather ordinary certificate chains validated by typical
5221 * applications that perform certificate verification and therefore will
5222 * process SCTs when enabled.
5223 */
5224 if (s->ct_validation_callback == NULL || cert == NULL ||
5225 s->verify_result != X509_V_OK ||
5226 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5227 return 1;
5228
5229 /*
5230 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5231 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5232 */
5233 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5234 switch (dane->mtlsa->usage) {
5235 case DANETLS_USAGE_DANE_TA:
5236 case DANETLS_USAGE_DANE_EE:
5237 return 1;
5238 }
5239 }
5240
5241 ctx = CT_POLICY_EVAL_CTX_new_ex(s->ctx->libctx, s->ctx->propq);
5242 if (ctx == NULL) {
5243 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5244 goto end;
5245 }
5246
5247 issuer = sk_X509_value(s->verified_chain, 1);
5248 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5249 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5250 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5251 CT_POLICY_EVAL_CTX_set_time(
5252 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5253
5254 scts = SSL_get0_peer_scts(s);
5255
5256 /*
5257 * This function returns success (> 0) only when all the SCTs are valid, 0
5258 * when some are invalid, and < 0 on various internal errors (out of
5259 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5260 * reason to abort the handshake, that decision is up to the callback.
5261 * Therefore, we error out only in the unexpected case that the return
5262 * value is negative.
5263 *
5264 * XXX: One might well argue that the return value of this function is an
5265 * unfortunate design choice. Its job is only to determine the validation
5266 * status of each of the provided SCTs. So long as it correctly separates
5267 * the wheat from the chaff it should return success. Failure in this case
5268 * ought to correspond to an inability to carry out its duties.
5269 */
5270 if (SCT_LIST_validate(scts, ctx) < 0) {
5271 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
5272 goto end;
5273 }
5274
5275 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5276 if (ret < 0)
5277 ret = 0; /* This function returns 0 on failure */
5278 if (!ret)
5279 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
5280
5281 end:
5282 CT_POLICY_EVAL_CTX_free(ctx);
5283 /*
5284 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5285 * failure return code here. Also the application may wish the complete
5286 * the handshake, and then disconnect cleanly at a higher layer, after
5287 * checking the verification status of the completed connection.
5288 *
5289 * We therefore force a certificate verification failure which will be
5290 * visible via SSL_get_verify_result() and cached as part of any resumed
5291 * session.
5292 *
5293 * Note: the permissive callback is for information gathering only, always
5294 * returns success, and does not affect verification status. Only the
5295 * strict callback or a custom application-specified callback can trigger
5296 * connection failure or record a verification error.
5297 */
5298 if (ret <= 0)
5299 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5300 return ret;
5301}
5302
5303int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5304{
5305 switch (validation_mode) {
5306 default:
5307 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
5308 return 0;
5309 case SSL_CT_VALIDATION_PERMISSIVE:
5310 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5311 case SSL_CT_VALIDATION_STRICT:
5312 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5313 }
5314}
5315
5316int SSL_enable_ct(SSL *s, int validation_mode)
5317{
5318 switch (validation_mode) {
5319 default:
5320 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
5321 return 0;
5322 case SSL_CT_VALIDATION_PERMISSIVE:
5323 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5324 case SSL_CT_VALIDATION_STRICT:
5325 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5326 }
5327}
5328
5329int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5330{
5331 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5332}
5333
5334int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5335{
5336 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5337}
5338
5339void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5340{
5341 CTLOG_STORE_free(ctx->ctlog_store);
5342 ctx->ctlog_store = logs;
5343}
5344
5345const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5346{
5347 return ctx->ctlog_store;
5348}
5349
5350#endif /* OPENSSL_NO_CT */
5351
5352void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5353 void *arg)
5354{
5355 c->client_hello_cb = cb;
5356 c->client_hello_cb_arg = arg;
5357}
5358
5359int SSL_client_hello_isv2(SSL *s)
5360{
5361 if (s->clienthello == NULL)
5362 return 0;
5363 return s->clienthello->isv2;
5364}
5365
5366unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5367{
5368 if (s->clienthello == NULL)
5369 return 0;
5370 return s->clienthello->legacy_version;
5371}
5372
5373size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5374{
5375 if (s->clienthello == NULL)
5376 return 0;
5377 if (out != NULL)
5378 *out = s->clienthello->random;
5379 return SSL3_RANDOM_SIZE;
5380}
5381
5382size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5383{
5384 if (s->clienthello == NULL)
5385 return 0;
5386 if (out != NULL)
5387 *out = s->clienthello->session_id;
5388 return s->clienthello->session_id_len;
5389}
5390
5391size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5392{
5393 if (s->clienthello == NULL)
5394 return 0;
5395 if (out != NULL)
5396 *out = PACKET_data(&s->clienthello->ciphersuites);
5397 return PACKET_remaining(&s->clienthello->ciphersuites);
5398}
5399
5400size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5401{
5402 if (s->clienthello == NULL)
5403 return 0;
5404 if (out != NULL)
5405 *out = s->clienthello->compressions;
5406 return s->clienthello->compressions_len;
5407}
5408
5409int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5410{
5411 RAW_EXTENSION *ext;
5412 int *present;
5413 size_t num = 0, i;
5414
5415 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5416 return 0;
5417 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5418 ext = s->clienthello->pre_proc_exts + i;
5419 if (ext->present)
5420 num++;
5421 }
5422 if (num == 0) {
5423 *out = NULL;
5424 *outlen = 0;
5425 return 1;
5426 }
5427 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5428 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5429 return 0;
5430 }
5431 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5432 ext = s->clienthello->pre_proc_exts + i;
5433 if (ext->present) {
5434 if (ext->received_order >= num)
5435 goto err;
5436 present[ext->received_order] = ext->type;
5437 }
5438 }
5439 *out = present;
5440 *outlen = num;
5441 return 1;
5442 err:
5443 OPENSSL_free(present);
5444 return 0;
5445}
5446
5447int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5448 size_t *outlen)
5449{
5450 size_t i;
5451 RAW_EXTENSION *r;
5452
5453 if (s->clienthello == NULL)
5454 return 0;
5455 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5456 r = s->clienthello->pre_proc_exts + i;
5457 if (r->present && r->type == type) {
5458 if (out != NULL)
5459 *out = PACKET_data(&r->data);
5460 if (outlen != NULL)
5461 *outlen = PACKET_remaining(&r->data);
5462 return 1;
5463 }
5464 }
5465 return 0;
5466}
5467
5468int SSL_free_buffers(SSL *ssl)
5469{
5470 RECORD_LAYER *rl = &ssl->rlayer;
5471
5472 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5473 return 0;
5474
5475 RECORD_LAYER_release(rl);
5476 return 1;
5477}
5478
5479int SSL_alloc_buffers(SSL *ssl)
5480{
5481 return ssl3_setup_buffers(ssl);
5482}
5483
5484void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5485{
5486 ctx->keylog_callback = cb;
5487}
5488
5489SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5490{
5491 return ctx->keylog_callback;
5492}
5493
5494static int nss_keylog_int(const char *prefix,
5495 SSL *ssl,
5496 const uint8_t *parameter_1,
5497 size_t parameter_1_len,
5498 const uint8_t *parameter_2,
5499 size_t parameter_2_len)
5500{
5501 char *out = NULL;
5502 char *cursor = NULL;
5503 size_t out_len = 0;
5504 size_t i;
5505 size_t prefix_len;
5506
5507 if (ssl->ctx->keylog_callback == NULL)
5508 return 1;
5509
5510 /*
5511 * Our output buffer will contain the following strings, rendered with
5512 * space characters in between, terminated by a NULL character: first the
5513 * prefix, then the first parameter, then the second parameter. The
5514 * meaning of each parameter depends on the specific key material being
5515 * logged. Note that the first and second parameters are encoded in
5516 * hexadecimal, so we need a buffer that is twice their lengths.
5517 */
5518 prefix_len = strlen(prefix);
5519 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5520 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5521 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5522 return 0;
5523 }
5524
5525 strcpy(cursor, prefix);
5526 cursor += prefix_len;
5527 *cursor++ = ' ';
5528
5529 for (i = 0; i < parameter_1_len; i++) {
5530 sprintf(cursor, "%02x", parameter_1[i]);
5531 cursor += 2;
5532 }
5533 *cursor++ = ' ';
5534
5535 for (i = 0; i < parameter_2_len; i++) {
5536 sprintf(cursor, "%02x", parameter_2[i]);
5537 cursor += 2;
5538 }
5539 *cursor = '\0';
5540
5541 ssl->ctx->keylog_callback(ssl, (const char *)out);
5542 OPENSSL_clear_free(out, out_len);
5543 return 1;
5544
5545}
5546
5547int ssl_log_rsa_client_key_exchange(SSL *ssl,
5548 const uint8_t *encrypted_premaster,
5549 size_t encrypted_premaster_len,
5550 const uint8_t *premaster,
5551 size_t premaster_len)
5552{
5553 if (encrypted_premaster_len < 8) {
5554 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5555 return 0;
5556 }
5557
5558 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5559 return nss_keylog_int("RSA",
5560 ssl,
5561 encrypted_premaster,
5562 8,
5563 premaster,
5564 premaster_len);
5565}
5566
5567int ssl_log_secret(SSL *ssl,
5568 const char *label,
5569 const uint8_t *secret,
5570 size_t secret_len)
5571{
5572 return nss_keylog_int(label,
5573 ssl,
5574 ssl->s3.client_random,
5575 SSL3_RANDOM_SIZE,
5576 secret,
5577 secret_len);
5578}
5579
5580#define SSLV2_CIPHER_LEN 3
5581
5582int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5583{
5584 int n;
5585
5586 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5587
5588 if (PACKET_remaining(cipher_suites) == 0) {
5589 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
5590 return 0;
5591 }
5592
5593 if (PACKET_remaining(cipher_suites) % n != 0) {
5594 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5595 return 0;
5596 }
5597
5598 OPENSSL_free(s->s3.tmp.ciphers_raw);
5599 s->s3.tmp.ciphers_raw = NULL;
5600 s->s3.tmp.ciphers_rawlen = 0;
5601
5602 if (sslv2format) {
5603 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5604 PACKET sslv2ciphers = *cipher_suites;
5605 unsigned int leadbyte;
5606 unsigned char *raw;
5607
5608 /*
5609 * We store the raw ciphers list in SSLv3+ format so we need to do some
5610 * preprocessing to convert the list first. If there are any SSLv2 only
5611 * ciphersuites with a non-zero leading byte then we are going to
5612 * slightly over allocate because we won't store those. But that isn't a
5613 * problem.
5614 */
5615 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5616 s->s3.tmp.ciphers_raw = raw;
5617 if (raw == NULL) {
5618 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5619 return 0;
5620 }
5621 for (s->s3.tmp.ciphers_rawlen = 0;
5622 PACKET_remaining(&sslv2ciphers) > 0;
5623 raw += TLS_CIPHER_LEN) {
5624 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5625 || (leadbyte == 0
5626 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5627 TLS_CIPHER_LEN))
5628 || (leadbyte != 0
5629 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5630 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
5631 OPENSSL_free(s->s3.tmp.ciphers_raw);
5632 s->s3.tmp.ciphers_raw = NULL;
5633 s->s3.tmp.ciphers_rawlen = 0;
5634 return 0;
5635 }
5636 if (leadbyte == 0)
5637 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5638 }
5639 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5640 &s->s3.tmp.ciphers_rawlen)) {
5641 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5642 return 0;
5643 }
5644 return 1;
5645}
5646
5647int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5648 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5649 STACK_OF(SSL_CIPHER) **scsvs)
5650{
5651 PACKET pkt;
5652
5653 if (!PACKET_buf_init(&pkt, bytes, len))
5654 return 0;
5655 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5656}
5657
5658int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5659 STACK_OF(SSL_CIPHER) **skp,
5660 STACK_OF(SSL_CIPHER) **scsvs_out,
5661 int sslv2format, int fatal)
5662{
5663 const SSL_CIPHER *c;
5664 STACK_OF(SSL_CIPHER) *sk = NULL;
5665 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5666 int n;
5667 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5668 unsigned char cipher[SSLV2_CIPHER_LEN];
5669
5670 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5671
5672 if (PACKET_remaining(cipher_suites) == 0) {
5673 if (fatal)
5674 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
5675 else
5676 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
5677 return 0;
5678 }
5679
5680 if (PACKET_remaining(cipher_suites) % n != 0) {
5681 if (fatal)
5682 SSLfatal(s, SSL_AD_DECODE_ERROR,
5683 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5684 else
5685 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5686 return 0;
5687 }
5688
5689 sk = sk_SSL_CIPHER_new_null();
5690 scsvs = sk_SSL_CIPHER_new_null();
5691 if (sk == NULL || scsvs == NULL) {
5692 if (fatal)
5693 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5694 else
5695 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5696 goto err;
5697 }
5698
5699 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5700 /*
5701 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5702 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5703 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5704 */
5705 if (sslv2format && cipher[0] != '\0')
5706 continue;
5707
5708 /* For SSLv2-compat, ignore leading 0-byte. */
5709 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5710 if (c != NULL) {
5711 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5712 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5713 if (fatal)
5714 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5715 else
5716 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5717 goto err;
5718 }
5719 }
5720 }
5721 if (PACKET_remaining(cipher_suites) > 0) {
5722 if (fatal)
5723 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
5724 else
5725 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
5726 goto err;
5727 }
5728
5729 if (skp != NULL)
5730 *skp = sk;
5731 else
5732 sk_SSL_CIPHER_free(sk);
5733 if (scsvs_out != NULL)
5734 *scsvs_out = scsvs;
5735 else
5736 sk_SSL_CIPHER_free(scsvs);
5737 return 1;
5738 err:
5739 sk_SSL_CIPHER_free(sk);
5740 sk_SSL_CIPHER_free(scsvs);
5741 return 0;
5742}
5743
5744int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5745{
5746 ctx->max_early_data = max_early_data;
5747
5748 return 1;
5749}
5750
5751uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5752{
5753 return ctx->max_early_data;
5754}
5755
5756int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5757{
5758 s->max_early_data = max_early_data;
5759
5760 return 1;
5761}
5762
5763uint32_t SSL_get_max_early_data(const SSL *s)
5764{
5765 return s->max_early_data;
5766}
5767
5768int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5769{
5770 ctx->recv_max_early_data = recv_max_early_data;
5771
5772 return 1;
5773}
5774
5775uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5776{
5777 return ctx->recv_max_early_data;
5778}
5779
5780int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5781{
5782 s->recv_max_early_data = recv_max_early_data;
5783
5784 return 1;
5785}
5786
5787uint32_t SSL_get_recv_max_early_data(const SSL *s)
5788{
5789 return s->recv_max_early_data;
5790}
5791
5792__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5793{
5794 /* Return any active Max Fragment Len extension */
5795 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5796 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5797
5798 /* return current SSL connection setting */
5799 return ssl->max_send_fragment;
5800}
5801
5802__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5803{
5804 /* Return a value regarding an active Max Fragment Len extension */
5805 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5806 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5807 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5808
5809 /* else limit |split_send_fragment| to current |max_send_fragment| */
5810 if (ssl->split_send_fragment > ssl->max_send_fragment)
5811 return ssl->max_send_fragment;
5812
5813 /* return current SSL connection setting */
5814 return ssl->split_send_fragment;
5815}
5816
5817int SSL_stateless(SSL *s)
5818{
5819 int ret;
5820
5821 /* Ensure there is no state left over from a previous invocation */
5822 if (!SSL_clear(s))
5823 return 0;
5824
5825 ERR_clear_error();
5826
5827 s->s3.flags |= TLS1_FLAGS_STATELESS;
5828 ret = SSL_accept(s);
5829 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5830
5831 if (ret > 0 && s->ext.cookieok)
5832 return 1;
5833
5834 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5835 return 0;
5836
5837 return -1;
5838}
5839
5840void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5841{
5842 ctx->pha_enabled = val;
5843}
5844
5845void SSL_set_post_handshake_auth(SSL *ssl, int val)
5846{
5847 ssl->pha_enabled = val;
5848}
5849
5850int SSL_verify_client_post_handshake(SSL *ssl)
5851{
5852 if (!SSL_IS_TLS13(ssl)) {
5853 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
5854 return 0;
5855 }
5856 if (!ssl->server) {
5857 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
5858 return 0;
5859 }
5860
5861 if (!SSL_is_init_finished(ssl)) {
5862 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
5863 return 0;
5864 }
5865
5866 switch (ssl->post_handshake_auth) {
5867 case SSL_PHA_NONE:
5868 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
5869 return 0;
5870 default:
5871 case SSL_PHA_EXT_SENT:
5872 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
5873 return 0;
5874 case SSL_PHA_EXT_RECEIVED:
5875 break;
5876 case SSL_PHA_REQUEST_PENDING:
5877 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
5878 return 0;
5879 case SSL_PHA_REQUESTED:
5880 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
5881 return 0;
5882 }
5883
5884 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5885
5886 /* checks verify_mode and algorithm_auth */
5887 if (!send_certificate_request(ssl)) {
5888 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5889 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
5890 return 0;
5891 }
5892
5893 ossl_statem_set_in_init(ssl, 1);
5894 return 1;
5895}
5896
5897int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5898 SSL_CTX_generate_session_ticket_fn gen_cb,
5899 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5900 void *arg)
5901{
5902 ctx->generate_ticket_cb = gen_cb;
5903 ctx->decrypt_ticket_cb = dec_cb;
5904 ctx->ticket_cb_data = arg;
5905 return 1;
5906}
5907
5908void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5909 SSL_allow_early_data_cb_fn cb,
5910 void *arg)
5911{
5912 ctx->allow_early_data_cb = cb;
5913 ctx->allow_early_data_cb_data = arg;
5914}
5915
5916void SSL_set_allow_early_data_cb(SSL *s,
5917 SSL_allow_early_data_cb_fn cb,
5918 void *arg)
5919{
5920 s->allow_early_data_cb = cb;
5921 s->allow_early_data_cb_data = arg;
5922}
5923
5924const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
5925 int nid,
5926 const char *properties)
5927{
5928 const EVP_CIPHER *ciph;
5929
5930 ciph = tls_get_cipher_from_engine(nid);
5931 if (ciph != NULL)
5932 return ciph;
5933
5934 /*
5935 * If there is no engine cipher then we do an explicit fetch. This may fail
5936 * and that could be ok
5937 */
5938 ERR_set_mark();
5939 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5940 ERR_pop_to_mark();
5941 return ciph;
5942}
5943
5944
5945int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5946{
5947 /* Don't up-ref an implicit EVP_CIPHER */
5948 if (EVP_CIPHER_get0_provider(cipher) == NULL)
5949 return 1;
5950
5951 /*
5952 * The cipher was explicitly fetched and therefore it is safe to cast
5953 * away the const
5954 */
5955 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5956}
5957
5958void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5959{
5960 if (cipher == NULL)
5961 return;
5962
5963 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
5964 /*
5965 * The cipher was explicitly fetched and therefore it is safe to cast
5966 * away the const
5967 */
5968 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5969 }
5970}
5971
5972const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
5973 int nid,
5974 const char *properties)
5975{
5976 const EVP_MD *md;
5977
5978 md = tls_get_digest_from_engine(nid);
5979 if (md != NULL)
5980 return md;
5981
5982 /* Otherwise we do an explicit fetch */
5983 ERR_set_mark();
5984 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5985 ERR_pop_to_mark();
5986 return md;
5987}
5988
5989int ssl_evp_md_up_ref(const EVP_MD *md)
5990{
5991 /* Don't up-ref an implicit EVP_MD */
5992 if (EVP_MD_get0_provider(md) == NULL)
5993 return 1;
5994
5995 /*
5996 * The digest was explicitly fetched and therefore it is safe to cast
5997 * away the const
5998 */
5999 return EVP_MD_up_ref((EVP_MD *)md);
6000}
6001
6002void ssl_evp_md_free(const EVP_MD *md)
6003{
6004 if (md == NULL)
6005 return;
6006
6007 if (EVP_MD_get0_provider(md) != NULL) {
6008 /*
6009 * The digest was explicitly fetched and therefore it is safe to cast
6010 * away the const
6011 */
6012 EVP_MD_free((EVP_MD *)md);
6013 }
6014}
6015
6016int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6017{
6018 if (!ssl_security(s, SSL_SECOP_TMP_DH,
6019 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6020 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6021 return 0;
6022 }
6023 EVP_PKEY_free(s->cert->dh_tmp);
6024 s->cert->dh_tmp = dhpkey;
6025 return 1;
6026}
6027
6028int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6029{
6030 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6031 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6032 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6033 return 0;
6034 }
6035 EVP_PKEY_free(ctx->cert->dh_tmp);
6036 ctx->cert->dh_tmp = dhpkey;
6037 return 1;
6038}
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