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source: vbox/trunk/src/libs/openssl-3.0.7/ssl/ssl_lib.c@ 98929

Last change on this file since 98929 was 97372, checked in by vboxsync, 2 years ago

libs: Switch to openssl-3.0.7, bugref:10317
File size: 166.2 KB
Line 
1/*
2 * Copyright 1995-2022 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 "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/refcount.h"
26#include "internal/ktls.h"
27
28static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
29 SSL_MAC_BUF *mac, size_t macsize)
30{
31 return ssl_undefined_function(ssl);
32}
33
34static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
35 int t)
36{
37 return ssl_undefined_function(ssl);
38}
39
40static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
41 unsigned char *s, size_t t, size_t *u)
42{
43 return ssl_undefined_function(ssl);
44}
45
46static int ssl_undefined_function_4(SSL *ssl, int r)
47{
48 return ssl_undefined_function(ssl);
49}
50
51static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
52 unsigned char *t)
53{
54 return ssl_undefined_function(ssl);
55}
56
57static int ssl_undefined_function_6(int r)
58{
59 return ssl_undefined_function(NULL);
60}
61
62static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
63 const char *t, size_t u,
64 const unsigned char *v, size_t w, int x)
65{
66 return ssl_undefined_function(ssl);
67}
68
69SSL3_ENC_METHOD ssl3_undef_enc_method = {
70 ssl_undefined_function_1,
71 ssl_undefined_function_2,
72 ssl_undefined_function,
73 ssl_undefined_function_3,
74 ssl_undefined_function_4,
75 ssl_undefined_function_5,
76 NULL, /* client_finished_label */
77 0, /* client_finished_label_len */
78 NULL, /* server_finished_label */
79 0, /* server_finished_label_len */
80 ssl_undefined_function_6,
81 ssl_undefined_function_7,
82};
83
84struct ssl_async_args {
85 SSL *s;
86 void *buf;
87 size_t num;
88 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
89 union {
90 int (*func_read) (SSL *, void *, size_t, size_t *);
91 int (*func_write) (SSL *, const void *, size_t, size_t *);
92 int (*func_other) (SSL *);
93 } f;
94};
95
96static const struct {
97 uint8_t mtype;
98 uint8_t ord;
99 int nid;
100} dane_mds[] = {
101 {
102 DANETLS_MATCHING_FULL, 0, NID_undef
103 },
104 {
105 DANETLS_MATCHING_2256, 1, NID_sha256
106 },
107 {
108 DANETLS_MATCHING_2512, 2, NID_sha512
109 },
110};
111
112static int dane_ctx_enable(struct dane_ctx_st *dctx)
113{
114 const EVP_MD **mdevp;
115 uint8_t *mdord;
116 uint8_t mdmax = DANETLS_MATCHING_LAST;
117 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
118 size_t i;
119
120 if (dctx->mdevp != NULL)
121 return 1;
122
123 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
124 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
125
126 if (mdord == NULL || mdevp == NULL) {
127 OPENSSL_free(mdord);
128 OPENSSL_free(mdevp);
129 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
130 return 0;
131 }
132
133 /* Install default entries */
134 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
135 const EVP_MD *md;
136
137 if (dane_mds[i].nid == NID_undef ||
138 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
139 continue;
140 mdevp[dane_mds[i].mtype] = md;
141 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
142 }
143
144 dctx->mdevp = mdevp;
145 dctx->mdord = mdord;
146 dctx->mdmax = mdmax;
147
148 return 1;
149}
150
151static void dane_ctx_final(struct dane_ctx_st *dctx)
152{
153 OPENSSL_free(dctx->mdevp);
154 dctx->mdevp = NULL;
155
156 OPENSSL_free(dctx->mdord);
157 dctx->mdord = NULL;
158 dctx->mdmax = 0;
159}
160
161static void tlsa_free(danetls_record *t)
162{
163 if (t == NULL)
164 return;
165 OPENSSL_free(t->data);
166 EVP_PKEY_free(t->spki);
167 OPENSSL_free(t);
168}
169
170static void dane_final(SSL_DANE *dane)
171{
172 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
173 dane->trecs = NULL;
174
175 sk_X509_pop_free(dane->certs, X509_free);
176 dane->certs = NULL;
177
178 X509_free(dane->mcert);
179 dane->mcert = NULL;
180 dane->mtlsa = NULL;
181 dane->mdpth = -1;
182 dane->pdpth = -1;
183}
184
185/*
186 * dane_copy - Copy dane configuration, sans verification state.
187 */
188static int ssl_dane_dup(SSL *to, SSL *from)
189{
190 int num;
191 int i;
192
193 if (!DANETLS_ENABLED(&from->dane))
194 return 1;
195
196 num = sk_danetls_record_num(from->dane.trecs);
197 dane_final(&to->dane);
198 to->dane.flags = from->dane.flags;
199 to->dane.dctx = &to->ctx->dane;
200 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
201
202 if (to->dane.trecs == NULL) {
203 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
204 return 0;
205 }
206
207 for (i = 0; i < num; ++i) {
208 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
209
210 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
211 t->data, t->dlen) <= 0)
212 return 0;
213 }
214 return 1;
215}
216
217static int dane_mtype_set(struct dane_ctx_st *dctx,
218 const EVP_MD *md, uint8_t mtype, uint8_t ord)
219{
220 int i;
221
222 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
223 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
224 return 0;
225 }
226
227 if (mtype > dctx->mdmax) {
228 const EVP_MD **mdevp;
229 uint8_t *mdord;
230 int n = ((int)mtype) + 1;
231
232 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
233 if (mdevp == NULL) {
234 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
235 return -1;
236 }
237 dctx->mdevp = mdevp;
238
239 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
240 if (mdord == NULL) {
241 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
242 return -1;
243 }
244 dctx->mdord = mdord;
245
246 /* Zero-fill any gaps */
247 for (i = dctx->mdmax + 1; i < mtype; ++i) {
248 mdevp[i] = NULL;
249 mdord[i] = 0;
250 }
251
252 dctx->mdmax = mtype;
253 }
254
255 dctx->mdevp[mtype] = md;
256 /* Coerce ordinal of disabled matching types to 0 */
257 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
258
259 return 1;
260}
261
262static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
263{
264 if (mtype > dane->dctx->mdmax)
265 return NULL;
266 return dane->dctx->mdevp[mtype];
267}
268
269static int dane_tlsa_add(SSL_DANE *dane,
270 uint8_t usage,
271 uint8_t selector,
272 uint8_t mtype, const unsigned char *data, size_t dlen)
273{
274 danetls_record *t;
275 const EVP_MD *md = NULL;
276 int ilen = (int)dlen;
277 int i;
278 int num;
279
280 if (dane->trecs == NULL) {
281 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
282 return -1;
283 }
284
285 if (ilen < 0 || dlen != (size_t)ilen) {
286 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
287 return 0;
288 }
289
290 if (usage > DANETLS_USAGE_LAST) {
291 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
292 return 0;
293 }
294
295 if (selector > DANETLS_SELECTOR_LAST) {
296 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
297 return 0;
298 }
299
300 if (mtype != DANETLS_MATCHING_FULL) {
301 md = tlsa_md_get(dane, mtype);
302 if (md == NULL) {
303 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
304 return 0;
305 }
306 }
307
308 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
309 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
310 return 0;
311 }
312 if (!data) {
313 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
314 return 0;
315 }
316
317 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
318 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
319 return -1;
320 }
321
322 t->usage = usage;
323 t->selector = selector;
324 t->mtype = mtype;
325 t->data = OPENSSL_malloc(dlen);
326 if (t->data == NULL) {
327 tlsa_free(t);
328 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
329 return -1;
330 }
331 memcpy(t->data, data, dlen);
332 t->dlen = dlen;
333
334 /* Validate and cache full certificate or public key */
335 if (mtype == DANETLS_MATCHING_FULL) {
336 const unsigned char *p = data;
337 X509 *cert = NULL;
338 EVP_PKEY *pkey = NULL;
339
340 switch (selector) {
341 case DANETLS_SELECTOR_CERT:
342 if (!d2i_X509(&cert, &p, ilen) || p < data ||
343 dlen != (size_t)(p - data)) {
344 tlsa_free(t);
345 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
346 return 0;
347 }
348 if (X509_get0_pubkey(cert) == NULL) {
349 tlsa_free(t);
350 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
351 return 0;
352 }
353
354 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
355 X509_free(cert);
356 break;
357 }
358
359 /*
360 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
361 * records that contain full certificates of trust-anchors that are
362 * not present in the wire chain. For usage PKIX-TA(0), we augment
363 * the chain with untrusted Full(0) certificates from DNS, in case
364 * they are missing from the chain.
365 */
366 if ((dane->certs == NULL &&
367 (dane->certs = sk_X509_new_null()) == NULL) ||
368 !sk_X509_push(dane->certs, cert)) {
369 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
370 X509_free(cert);
371 tlsa_free(t);
372 return -1;
373 }
374 break;
375
376 case DANETLS_SELECTOR_SPKI:
377 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
378 dlen != (size_t)(p - data)) {
379 tlsa_free(t);
380 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
381 return 0;
382 }
383
384 /*
385 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
386 * records that contain full bare keys of trust-anchors that are
387 * not present in the wire chain.
388 */
389 if (usage == DANETLS_USAGE_DANE_TA)
390 t->spki = pkey;
391 else
392 EVP_PKEY_free(pkey);
393 break;
394 }
395 }
396
397 /*-
398 * Find the right insertion point for the new record.
399 *
400 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
401 * they can be processed first, as they require no chain building, and no
402 * expiration or hostname checks. Because DANE-EE(3) is numerically
403 * largest, this is accomplished via descending sort by "usage".
404 *
405 * We also sort in descending order by matching ordinal to simplify
406 * the implementation of digest agility in the verification code.
407 *
408 * The choice of order for the selector is not significant, so we
409 * use the same descending order for consistency.
410 */
411 num = sk_danetls_record_num(dane->trecs);
412 for (i = 0; i < num; ++i) {
413 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
414
415 if (rec->usage > usage)
416 continue;
417 if (rec->usage < usage)
418 break;
419 if (rec->selector > selector)
420 continue;
421 if (rec->selector < selector)
422 break;
423 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
424 continue;
425 break;
426 }
427
428 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
429 tlsa_free(t);
430 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
431 return -1;
432 }
433 dane->umask |= DANETLS_USAGE_BIT(usage);
434
435 return 1;
436}
437
438/*
439 * Return 0 if there is only one version configured and it was disabled
440 * at configure time. Return 1 otherwise.
441 */
442static int ssl_check_allowed_versions(int min_version, int max_version)
443{
444 int minisdtls = 0, maxisdtls = 0;
445
446 /* Figure out if we're doing DTLS versions or TLS versions */
447 if (min_version == DTLS1_BAD_VER
448 || min_version >> 8 == DTLS1_VERSION_MAJOR)
449 minisdtls = 1;
450 if (max_version == DTLS1_BAD_VER
451 || max_version >> 8 == DTLS1_VERSION_MAJOR)
452 maxisdtls = 1;
453 /* A wildcard version of 0 could be DTLS or TLS. */
454 if ((minisdtls && !maxisdtls && max_version != 0)
455 || (maxisdtls && !minisdtls && min_version != 0)) {
456 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
457 return 0;
458 }
459
460 if (minisdtls || maxisdtls) {
461 /* Do DTLS version checks. */
462 if (min_version == 0)
463 /* Ignore DTLS1_BAD_VER */
464 min_version = DTLS1_VERSION;
465 if (max_version == 0)
466 max_version = DTLS1_2_VERSION;
467#ifdef OPENSSL_NO_DTLS1_2
468 if (max_version == DTLS1_2_VERSION)
469 max_version = DTLS1_VERSION;
470#endif
471#ifdef OPENSSL_NO_DTLS1
472 if (min_version == DTLS1_VERSION)
473 min_version = DTLS1_2_VERSION;
474#endif
475 /* Done massaging versions; do the check. */
476 if (0
477#ifdef OPENSSL_NO_DTLS1
478 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
479 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
480#endif
481#ifdef OPENSSL_NO_DTLS1_2
482 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
483 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
484#endif
485 )
486 return 0;
487 } else {
488 /* Regular TLS version checks. */
489 if (min_version == 0)
490 min_version = SSL3_VERSION;
491 if (max_version == 0)
492 max_version = TLS1_3_VERSION;
493#ifdef OPENSSL_NO_TLS1_3
494 if (max_version == TLS1_3_VERSION)
495 max_version = TLS1_2_VERSION;
496#endif
497#ifdef OPENSSL_NO_TLS1_2
498 if (max_version == TLS1_2_VERSION)
499 max_version = TLS1_1_VERSION;
500#endif
501#ifdef OPENSSL_NO_TLS1_1
502 if (max_version == TLS1_1_VERSION)
503 max_version = TLS1_VERSION;
504#endif
505#ifdef OPENSSL_NO_TLS1
506 if (max_version == TLS1_VERSION)
507 max_version = SSL3_VERSION;
508#endif
509#ifdef OPENSSL_NO_SSL3
510 if (min_version == SSL3_VERSION)
511 min_version = TLS1_VERSION;
512#endif
513#ifdef OPENSSL_NO_TLS1
514 if (min_version == TLS1_VERSION)
515 min_version = TLS1_1_VERSION;
516#endif
517#ifdef OPENSSL_NO_TLS1_1
518 if (min_version == TLS1_1_VERSION)
519 min_version = TLS1_2_VERSION;
520#endif
521#ifdef OPENSSL_NO_TLS1_2
522 if (min_version == TLS1_2_VERSION)
523 min_version = TLS1_3_VERSION;
524#endif
525 /* Done massaging versions; do the check. */
526 if (0
527#ifdef OPENSSL_NO_SSL3
528 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
529#endif
530#ifdef OPENSSL_NO_TLS1
531 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
532#endif
533#ifdef OPENSSL_NO_TLS1_1
534 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
535#endif
536#ifdef OPENSSL_NO_TLS1_2
537 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
538#endif
539#ifdef OPENSSL_NO_TLS1_3
540 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
541#endif
542 )
543 return 0;
544 }
545 return 1;
546}
547
548#if defined(__TANDEM) && defined(OPENSSL_VPROC)
549/*
550 * Define a VPROC function for HP NonStop build ssl library.
551 * This is used by platform version identification tools.
552 * Do not inline this procedure or make it static.
553 */
554# define OPENSSL_VPROC_STRING_(x) x##_SSL
555# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
556# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
557void OPENSSL_VPROC_FUNC(void) {}
558#endif
559
560
561static void clear_ciphers(SSL *s)
562{
563 /* clear the current cipher */
564 ssl_clear_cipher_ctx(s);
565 ssl_clear_hash_ctx(&s->read_hash);
566 ssl_clear_hash_ctx(&s->write_hash);
567}
568
569int SSL_clear(SSL *s)
570{
571 if (s->method == NULL) {
572 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
573 return 0;
574 }
575
576 if (ssl_clear_bad_session(s)) {
577 SSL_SESSION_free(s->session);
578 s->session = NULL;
579 }
580 SSL_SESSION_free(s->psksession);
581 s->psksession = NULL;
582 OPENSSL_free(s->psksession_id);
583 s->psksession_id = NULL;
584 s->psksession_id_len = 0;
585 s->hello_retry_request = 0;
586 s->sent_tickets = 0;
587
588 s->error = 0;
589 s->hit = 0;
590 s->shutdown = 0;
591
592 if (s->renegotiate) {
593 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
594 return 0;
595 }
596
597 ossl_statem_clear(s);
598
599 s->version = s->method->version;
600 s->client_version = s->version;
601 s->rwstate = SSL_NOTHING;
602
603 BUF_MEM_free(s->init_buf);
604 s->init_buf = NULL;
605 clear_ciphers(s);
606 s->first_packet = 0;
607
608 s->key_update = SSL_KEY_UPDATE_NONE;
609
610 EVP_MD_CTX_free(s->pha_dgst);
611 s->pha_dgst = NULL;
612
613 /* Reset DANE verification result state */
614 s->dane.mdpth = -1;
615 s->dane.pdpth = -1;
616 X509_free(s->dane.mcert);
617 s->dane.mcert = NULL;
618 s->dane.mtlsa = NULL;
619
620 /* Clear the verification result peername */
621 X509_VERIFY_PARAM_move_peername(s->param, NULL);
622
623 /* Clear any shared connection state */
624 OPENSSL_free(s->shared_sigalgs);
625 s->shared_sigalgs = NULL;
626 s->shared_sigalgslen = 0;
627
628 /*
629 * Check to see if we were changed into a different method, if so, revert
630 * back.
631 */
632 if (s->method != s->ctx->method) {
633 s->method->ssl_free(s);
634 s->method = s->ctx->method;
635 if (!s->method->ssl_new(s))
636 return 0;
637 } else {
638 if (!s->method->ssl_clear(s))
639 return 0;
640 }
641
642 RECORD_LAYER_clear(&s->rlayer);
643
644 return 1;
645}
646
647#ifndef OPENSSL_NO_DEPRECATED_3_0
648/** Used to change an SSL_CTXs default SSL method type */
649int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
650{
651 STACK_OF(SSL_CIPHER) *sk;
652
653 ctx->method = meth;
654
655 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
656 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
657 return 0;
658 }
659 sk = ssl_create_cipher_list(ctx,
660 ctx->tls13_ciphersuites,
661 &(ctx->cipher_list),
662 &(ctx->cipher_list_by_id),
663 OSSL_default_cipher_list(), ctx->cert);
664 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
665 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
666 return 0;
667 }
668 return 1;
669}
670#endif
671
672SSL *SSL_new(SSL_CTX *ctx)
673{
674 SSL *s;
675
676 if (ctx == NULL) {
677 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
678 return NULL;
679 }
680 if (ctx->method == NULL) {
681 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
682 return NULL;
683 }
684
685 s = OPENSSL_zalloc(sizeof(*s));
686 if (s == NULL)
687 goto err;
688
689 s->references = 1;
690 s->lock = CRYPTO_THREAD_lock_new();
691 if (s->lock == NULL) {
692 OPENSSL_free(s);
693 s = NULL;
694 goto err;
695 }
696
697 RECORD_LAYER_init(&s->rlayer, s);
698
699 s->options = ctx->options;
700 s->dane.flags = ctx->dane.flags;
701 s->min_proto_version = ctx->min_proto_version;
702 s->max_proto_version = ctx->max_proto_version;
703 s->mode = ctx->mode;
704 s->max_cert_list = ctx->max_cert_list;
705 s->max_early_data = ctx->max_early_data;
706 s->recv_max_early_data = ctx->recv_max_early_data;
707 s->num_tickets = ctx->num_tickets;
708 s->pha_enabled = ctx->pha_enabled;
709
710 /* Shallow copy of the ciphersuites stack */
711 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
712 if (s->tls13_ciphersuites == NULL)
713 goto err;
714
715 /*
716 * Earlier library versions used to copy the pointer to the CERT, not
717 * its contents; only when setting new parameters for the per-SSL
718 * copy, ssl_cert_new would be called (and the direct reference to
719 * the per-SSL_CTX settings would be lost, but those still were
720 * indirectly accessed for various purposes, and for that reason they
721 * used to be known as s->ctx->default_cert). Now we don't look at the
722 * SSL_CTX's CERT after having duplicated it once.
723 */
724 s->cert = ssl_cert_dup(ctx->cert);
725 if (s->cert == NULL)
726 goto err;
727
728 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
729 s->msg_callback = ctx->msg_callback;
730 s->msg_callback_arg = ctx->msg_callback_arg;
731 s->verify_mode = ctx->verify_mode;
732 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
733 s->record_padding_cb = ctx->record_padding_cb;
734 s->record_padding_arg = ctx->record_padding_arg;
735 s->block_padding = ctx->block_padding;
736 s->sid_ctx_length = ctx->sid_ctx_length;
737 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
738 goto err;
739 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
740 s->verify_callback = ctx->default_verify_callback;
741 s->generate_session_id = ctx->generate_session_id;
742
743 s->param = X509_VERIFY_PARAM_new();
744 if (s->param == NULL)
745 goto err;
746 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
747 s->quiet_shutdown = ctx->quiet_shutdown;
748
749 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
750 s->max_send_fragment = ctx->max_send_fragment;
751 s->split_send_fragment = ctx->split_send_fragment;
752 s->max_pipelines = ctx->max_pipelines;
753 if (s->max_pipelines > 1)
754 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
755 if (ctx->default_read_buf_len > 0)
756 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
757
758 SSL_CTX_up_ref(ctx);
759 s->ctx = ctx;
760 s->ext.debug_cb = 0;
761 s->ext.debug_arg = NULL;
762 s->ext.ticket_expected = 0;
763 s->ext.status_type = ctx->ext.status_type;
764 s->ext.status_expected = 0;
765 s->ext.ocsp.ids = NULL;
766 s->ext.ocsp.exts = NULL;
767 s->ext.ocsp.resp = NULL;
768 s->ext.ocsp.resp_len = 0;
769 SSL_CTX_up_ref(ctx);
770 s->session_ctx = ctx;
771 if (ctx->ext.ecpointformats) {
772 s->ext.ecpointformats =
773 OPENSSL_memdup(ctx->ext.ecpointformats,
774 ctx->ext.ecpointformats_len);
775 if (!s->ext.ecpointformats) {
776 s->ext.ecpointformats_len = 0;
777 goto err;
778 }
779 s->ext.ecpointformats_len =
780 ctx->ext.ecpointformats_len;
781 }
782 if (ctx->ext.supportedgroups) {
783 s->ext.supportedgroups =
784 OPENSSL_memdup(ctx->ext.supportedgroups,
785 ctx->ext.supportedgroups_len
786 * sizeof(*ctx->ext.supportedgroups));
787 if (!s->ext.supportedgroups) {
788 s->ext.supportedgroups_len = 0;
789 goto err;
790 }
791 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
792 }
793
794#ifndef OPENSSL_NO_NEXTPROTONEG
795 s->ext.npn = NULL;
796#endif
797
798 if (s->ctx->ext.alpn) {
799 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
800 if (s->ext.alpn == NULL) {
801 s->ext.alpn_len = 0;
802 goto err;
803 }
804 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
805 s->ext.alpn_len = s->ctx->ext.alpn_len;
806 }
807
808 s->verified_chain = NULL;
809 s->verify_result = X509_V_OK;
810
811 s->default_passwd_callback = ctx->default_passwd_callback;
812 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
813
814 s->method = ctx->method;
815
816 s->key_update = SSL_KEY_UPDATE_NONE;
817
818 s->allow_early_data_cb = ctx->allow_early_data_cb;
819 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
820
821 if (!s->method->ssl_new(s))
822 goto err;
823
824 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
825
826 if (!SSL_clear(s))
827 goto err;
828
829 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
830 goto err;
831
832#ifndef OPENSSL_NO_PSK
833 s->psk_client_callback = ctx->psk_client_callback;
834 s->psk_server_callback = ctx->psk_server_callback;
835#endif
836 s->psk_find_session_cb = ctx->psk_find_session_cb;
837 s->psk_use_session_cb = ctx->psk_use_session_cb;
838
839 s->async_cb = ctx->async_cb;
840 s->async_cb_arg = ctx->async_cb_arg;
841
842 s->job = NULL;
843
844#ifndef OPENSSL_NO_CT
845 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
846 ctx->ct_validation_callback_arg))
847 goto err;
848#endif
849
850 return s;
851 err:
852 SSL_free(s);
853 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
854 return NULL;
855}
856
857int SSL_is_dtls(const SSL *s)
858{
859 return SSL_IS_DTLS(s) ? 1 : 0;
860}
861
862int SSL_up_ref(SSL *s)
863{
864 int i;
865
866 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
867 return 0;
868
869 REF_PRINT_COUNT("SSL", s);
870 REF_ASSERT_ISNT(i < 2);
871 return ((i > 1) ? 1 : 0);
872}
873
874int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
875 unsigned int sid_ctx_len)
876{
877 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
878 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
879 return 0;
880 }
881 ctx->sid_ctx_length = sid_ctx_len;
882 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
883
884 return 1;
885}
886
887int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
888 unsigned int sid_ctx_len)
889{
890 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
891 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
892 return 0;
893 }
894 ssl->sid_ctx_length = sid_ctx_len;
895 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
896
897 return 1;
898}
899
900int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
901{
902 if (!CRYPTO_THREAD_write_lock(ctx->lock))
903 return 0;
904 ctx->generate_session_id = cb;
905 CRYPTO_THREAD_unlock(ctx->lock);
906 return 1;
907}
908
909int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
910{
911 if (!CRYPTO_THREAD_write_lock(ssl->lock))
912 return 0;
913 ssl->generate_session_id = cb;
914 CRYPTO_THREAD_unlock(ssl->lock);
915 return 1;
916}
917
918int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
919 unsigned int id_len)
920{
921 /*
922 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
923 * we can "construct" a session to give us the desired check - i.e. to
924 * find if there's a session in the hash table that would conflict with
925 * any new session built out of this id/id_len and the ssl_version in use
926 * by this SSL.
927 */
928 SSL_SESSION r, *p;
929
930 if (id_len > sizeof(r.session_id))
931 return 0;
932
933 r.ssl_version = ssl->version;
934 r.session_id_length = id_len;
935 memcpy(r.session_id, id, id_len);
936
937 if (!CRYPTO_THREAD_read_lock(ssl->session_ctx->lock))
938 return 0;
939 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
940 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
941 return (p != NULL);
942}
943
944int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
945{
946 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
947}
948
949int SSL_set_purpose(SSL *s, int purpose)
950{
951 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
952}
953
954int SSL_CTX_set_trust(SSL_CTX *s, int trust)
955{
956 return X509_VERIFY_PARAM_set_trust(s->param, trust);
957}
958
959int SSL_set_trust(SSL *s, int trust)
960{
961 return X509_VERIFY_PARAM_set_trust(s->param, trust);
962}
963
964int SSL_set1_host(SSL *s, const char *hostname)
965{
966 /* If a hostname is provided and parses as an IP address,
967 * treat it as such. */
968 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
969 return 1;
970
971 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
972}
973
974int SSL_add1_host(SSL *s, const char *hostname)
975{
976 /* If a hostname is provided and parses as an IP address,
977 * treat it as such. */
978 if (hostname)
979 {
980 ASN1_OCTET_STRING *ip;
981 char *old_ip;
982
983 ip = a2i_IPADDRESS(hostname);
984 if (ip) {
985 /* We didn't want it; only to check if it *is* an IP address */
986 ASN1_OCTET_STRING_free(ip);
987
988 old_ip = X509_VERIFY_PARAM_get1_ip_asc(s->param);
989 if (old_ip)
990 {
991 OPENSSL_free(old_ip);
992 /* There can be only one IP address */
993 return 0;
994 }
995
996 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
997 }
998 }
999
1000 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
1001}
1002
1003void SSL_set_hostflags(SSL *s, unsigned int flags)
1004{
1005 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
1006}
1007
1008const char *SSL_get0_peername(SSL *s)
1009{
1010 return X509_VERIFY_PARAM_get0_peername(s->param);
1011}
1012
1013int SSL_CTX_dane_enable(SSL_CTX *ctx)
1014{
1015 return dane_ctx_enable(&ctx->dane);
1016}
1017
1018unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1019{
1020 unsigned long orig = ctx->dane.flags;
1021
1022 ctx->dane.flags |= flags;
1023 return orig;
1024}
1025
1026unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1027{
1028 unsigned long orig = ctx->dane.flags;
1029
1030 ctx->dane.flags &= ~flags;
1031 return orig;
1032}
1033
1034int SSL_dane_enable(SSL *s, const char *basedomain)
1035{
1036 SSL_DANE *dane = &s->dane;
1037
1038 if (s->ctx->dane.mdmax == 0) {
1039 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1040 return 0;
1041 }
1042 if (dane->trecs != NULL) {
1043 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1044 return 0;
1045 }
1046
1047 /*
1048 * Default SNI name. This rejects empty names, while set1_host below
1049 * accepts them and disables host name checks. To avoid side-effects with
1050 * invalid input, set the SNI name first.
1051 */
1052 if (s->ext.hostname == NULL) {
1053 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1054 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1055 return -1;
1056 }
1057 }
1058
1059 /* Primary RFC6125 reference identifier */
1060 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1061 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1062 return -1;
1063 }
1064
1065 dane->mdpth = -1;
1066 dane->pdpth = -1;
1067 dane->dctx = &s->ctx->dane;
1068 dane->trecs = sk_danetls_record_new_null();
1069
1070 if (dane->trecs == NULL) {
1071 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1072 return -1;
1073 }
1074 return 1;
1075}
1076
1077unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1078{
1079 unsigned long orig = ssl->dane.flags;
1080
1081 ssl->dane.flags |= flags;
1082 return orig;
1083}
1084
1085unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1086{
1087 unsigned long orig = ssl->dane.flags;
1088
1089 ssl->dane.flags &= ~flags;
1090 return orig;
1091}
1092
1093int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1094{
1095 SSL_DANE *dane = &s->dane;
1096
1097 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1098 return -1;
1099 if (dane->mtlsa) {
1100 if (mcert)
1101 *mcert = dane->mcert;
1102 if (mspki)
1103 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1104 }
1105 return dane->mdpth;
1106}
1107
1108int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1109 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1110{
1111 SSL_DANE *dane = &s->dane;
1112
1113 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1114 return -1;
1115 if (dane->mtlsa) {
1116 if (usage)
1117 *usage = dane->mtlsa->usage;
1118 if (selector)
1119 *selector = dane->mtlsa->selector;
1120 if (mtype)
1121 *mtype = dane->mtlsa->mtype;
1122 if (data)
1123 *data = dane->mtlsa->data;
1124 if (dlen)
1125 *dlen = dane->mtlsa->dlen;
1126 }
1127 return dane->mdpth;
1128}
1129
1130SSL_DANE *SSL_get0_dane(SSL *s)
1131{
1132 return &s->dane;
1133}
1134
1135int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1136 uint8_t mtype, const unsigned char *data, size_t dlen)
1137{
1138 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1139}
1140
1141int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1142 uint8_t ord)
1143{
1144 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1145}
1146
1147int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1148{
1149 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1150}
1151
1152int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1153{
1154 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1155}
1156
1157X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1158{
1159 return ctx->param;
1160}
1161
1162X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1163{
1164 return ssl->param;
1165}
1166
1167void SSL_certs_clear(SSL *s)
1168{
1169 ssl_cert_clear_certs(s->cert);
1170}
1171
1172void SSL_free(SSL *s)
1173{
1174 int i;
1175
1176 if (s == NULL)
1177 return;
1178 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1179 REF_PRINT_COUNT("SSL", s);
1180 if (i > 0)
1181 return;
1182 REF_ASSERT_ISNT(i < 0);
1183
1184 X509_VERIFY_PARAM_free(s->param);
1185 dane_final(&s->dane);
1186 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1187
1188 RECORD_LAYER_release(&s->rlayer);
1189
1190 /* Ignore return value */
1191 ssl_free_wbio_buffer(s);
1192
1193 BIO_free_all(s->wbio);
1194 s->wbio = NULL;
1195 BIO_free_all(s->rbio);
1196 s->rbio = NULL;
1197
1198 BUF_MEM_free(s->init_buf);
1199
1200 /* add extra stuff */
1201 sk_SSL_CIPHER_free(s->cipher_list);
1202 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1203 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1204 sk_SSL_CIPHER_free(s->peer_ciphers);
1205
1206 /* Make the next call work :-) */
1207 if (s->session != NULL) {
1208 ssl_clear_bad_session(s);
1209 SSL_SESSION_free(s->session);
1210 }
1211 SSL_SESSION_free(s->psksession);
1212 OPENSSL_free(s->psksession_id);
1213
1214 clear_ciphers(s);
1215
1216 ssl_cert_free(s->cert);
1217 OPENSSL_free(s->shared_sigalgs);
1218 /* Free up if allocated */
1219
1220 OPENSSL_free(s->ext.hostname);
1221 SSL_CTX_free(s->session_ctx);
1222 OPENSSL_free(s->ext.ecpointformats);
1223 OPENSSL_free(s->ext.peer_ecpointformats);
1224 OPENSSL_free(s->ext.supportedgroups);
1225 OPENSSL_free(s->ext.peer_supportedgroups);
1226 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1227#ifndef OPENSSL_NO_OCSP
1228 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1229#endif
1230#ifndef OPENSSL_NO_CT
1231 SCT_LIST_free(s->scts);
1232 OPENSSL_free(s->ext.scts);
1233#endif
1234 OPENSSL_free(s->ext.ocsp.resp);
1235 OPENSSL_free(s->ext.alpn);
1236 OPENSSL_free(s->ext.tls13_cookie);
1237 if (s->clienthello != NULL)
1238 OPENSSL_free(s->clienthello->pre_proc_exts);
1239 OPENSSL_free(s->clienthello);
1240 OPENSSL_free(s->pha_context);
1241 EVP_MD_CTX_free(s->pha_dgst);
1242
1243 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1244 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1245
1246 sk_X509_pop_free(s->verified_chain, X509_free);
1247
1248 if (s->method != NULL)
1249 s->method->ssl_free(s);
1250
1251 SSL_CTX_free(s->ctx);
1252
1253 ASYNC_WAIT_CTX_free(s->waitctx);
1254
1255#if !defined(OPENSSL_NO_NEXTPROTONEG)
1256 OPENSSL_free(s->ext.npn);
1257#endif
1258
1259#ifndef OPENSSL_NO_SRTP
1260 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1261#endif
1262
1263 CRYPTO_THREAD_lock_free(s->lock);
1264
1265 OPENSSL_free(s);
1266}
1267
1268void SSL_set0_rbio(SSL *s, BIO *rbio)
1269{
1270 BIO_free_all(s->rbio);
1271 s->rbio = rbio;
1272}
1273
1274void SSL_set0_wbio(SSL *s, BIO *wbio)
1275{
1276 /*
1277 * If the output buffering BIO is still in place, remove it
1278 */
1279 if (s->bbio != NULL)
1280 s->wbio = BIO_pop(s->wbio);
1281
1282 BIO_free_all(s->wbio);
1283 s->wbio = wbio;
1284
1285 /* Re-attach |bbio| to the new |wbio|. */
1286 if (s->bbio != NULL)
1287 s->wbio = BIO_push(s->bbio, s->wbio);
1288}
1289
1290void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1291{
1292 /*
1293 * For historical reasons, this function has many different cases in
1294 * ownership handling.
1295 */
1296
1297 /* If nothing has changed, do nothing */
1298 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1299 return;
1300
1301 /*
1302 * If the two arguments are equal then one fewer reference is granted by the
1303 * caller than we want to take
1304 */
1305 if (rbio != NULL && rbio == wbio)
1306 BIO_up_ref(rbio);
1307
1308 /*
1309 * If only the wbio is changed only adopt one reference.
1310 */
1311 if (rbio == SSL_get_rbio(s)) {
1312 SSL_set0_wbio(s, wbio);
1313 return;
1314 }
1315 /*
1316 * There is an asymmetry here for historical reasons. If only the rbio is
1317 * changed AND the rbio and wbio were originally different, then we only
1318 * adopt one reference.
1319 */
1320 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1321 SSL_set0_rbio(s, rbio);
1322 return;
1323 }
1324
1325 /* Otherwise, adopt both references. */
1326 SSL_set0_rbio(s, rbio);
1327 SSL_set0_wbio(s, wbio);
1328}
1329
1330BIO *SSL_get_rbio(const SSL *s)
1331{
1332 return s->rbio;
1333}
1334
1335BIO *SSL_get_wbio(const SSL *s)
1336{
1337 if (s->bbio != NULL) {
1338 /*
1339 * If |bbio| is active, the true caller-configured BIO is its
1340 * |next_bio|.
1341 */
1342 return BIO_next(s->bbio);
1343 }
1344 return s->wbio;
1345}
1346
1347int SSL_get_fd(const SSL *s)
1348{
1349 return SSL_get_rfd(s);
1350}
1351
1352int SSL_get_rfd(const SSL *s)
1353{
1354 int ret = -1;
1355 BIO *b, *r;
1356
1357 b = SSL_get_rbio(s);
1358 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1359 if (r != NULL)
1360 BIO_get_fd(r, &ret);
1361 return ret;
1362}
1363
1364int SSL_get_wfd(const SSL *s)
1365{
1366 int ret = -1;
1367 BIO *b, *r;
1368
1369 b = SSL_get_wbio(s);
1370 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1371 if (r != NULL)
1372 BIO_get_fd(r, &ret);
1373 return ret;
1374}
1375
1376#ifndef OPENSSL_NO_SOCK
1377int SSL_set_fd(SSL *s, int fd)
1378{
1379 int ret = 0;
1380 BIO *bio = NULL;
1381
1382 bio = BIO_new(BIO_s_socket());
1383
1384 if (bio == NULL) {
1385 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1386 goto err;
1387 }
1388 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1389 SSL_set_bio(s, bio, bio);
1390#ifndef OPENSSL_NO_KTLS
1391 /*
1392 * The new socket is created successfully regardless of ktls_enable.
1393 * ktls_enable doesn't change any functionality of the socket, except
1394 * changing the setsockopt to enable the processing of ktls_start.
1395 * Thus, it is not a problem to call it for non-TLS sockets.
1396 */
1397 ktls_enable(fd);
1398#endif /* OPENSSL_NO_KTLS */
1399 ret = 1;
1400 err:
1401 return ret;
1402}
1403
1404int SSL_set_wfd(SSL *s, int fd)
1405{
1406 BIO *rbio = SSL_get_rbio(s);
1407
1408 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1409 || (int)BIO_get_fd(rbio, NULL) != fd) {
1410 BIO *bio = BIO_new(BIO_s_socket());
1411
1412 if (bio == NULL) {
1413 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1414 return 0;
1415 }
1416 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1417 SSL_set0_wbio(s, bio);
1418#ifndef OPENSSL_NO_KTLS
1419 /*
1420 * The new socket is created successfully regardless of ktls_enable.
1421 * ktls_enable doesn't change any functionality of the socket, except
1422 * changing the setsockopt to enable the processing of ktls_start.
1423 * Thus, it is not a problem to call it for non-TLS sockets.
1424 */
1425 ktls_enable(fd);
1426#endif /* OPENSSL_NO_KTLS */
1427 } else {
1428 BIO_up_ref(rbio);
1429 SSL_set0_wbio(s, rbio);
1430 }
1431 return 1;
1432}
1433
1434int SSL_set_rfd(SSL *s, int fd)
1435{
1436 BIO *wbio = SSL_get_wbio(s);
1437
1438 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1439 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1440 BIO *bio = BIO_new(BIO_s_socket());
1441
1442 if (bio == NULL) {
1443 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1444 return 0;
1445 }
1446 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1447 SSL_set0_rbio(s, bio);
1448 } else {
1449 BIO_up_ref(wbio);
1450 SSL_set0_rbio(s, wbio);
1451 }
1452
1453 return 1;
1454}
1455#endif
1456
1457/* return length of latest Finished message we sent, copy to 'buf' */
1458size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1459{
1460 size_t ret = 0;
1461
1462 ret = s->s3.tmp.finish_md_len;
1463 if (count > ret)
1464 count = ret;
1465 memcpy(buf, s->s3.tmp.finish_md, count);
1466 return ret;
1467}
1468
1469/* return length of latest Finished message we expected, copy to 'buf' */
1470size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1471{
1472 size_t ret = 0;
1473
1474 ret = s->s3.tmp.peer_finish_md_len;
1475 if (count > ret)
1476 count = ret;
1477 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1478 return ret;
1479}
1480
1481int SSL_get_verify_mode(const SSL *s)
1482{
1483 return s->verify_mode;
1484}
1485
1486int SSL_get_verify_depth(const SSL *s)
1487{
1488 return X509_VERIFY_PARAM_get_depth(s->param);
1489}
1490
1491int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1492 return s->verify_callback;
1493}
1494
1495int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1496{
1497 return ctx->verify_mode;
1498}
1499
1500int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1501{
1502 return X509_VERIFY_PARAM_get_depth(ctx->param);
1503}
1504
1505int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1506 return ctx->default_verify_callback;
1507}
1508
1509void SSL_set_verify(SSL *s, int mode,
1510 int (*callback) (int ok, X509_STORE_CTX *ctx))
1511{
1512 s->verify_mode = mode;
1513 if (callback != NULL)
1514 s->verify_callback = callback;
1515}
1516
1517void SSL_set_verify_depth(SSL *s, int depth)
1518{
1519 X509_VERIFY_PARAM_set_depth(s->param, depth);
1520}
1521
1522void SSL_set_read_ahead(SSL *s, int yes)
1523{
1524 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1525}
1526
1527int SSL_get_read_ahead(const SSL *s)
1528{
1529 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1530}
1531
1532int SSL_pending(const SSL *s)
1533{
1534 size_t pending = s->method->ssl_pending(s);
1535
1536 /*
1537 * SSL_pending cannot work properly if read-ahead is enabled
1538 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1539 * impossible to fix since SSL_pending cannot report errors that may be
1540 * observed while scanning the new data. (Note that SSL_pending() is
1541 * often used as a boolean value, so we'd better not return -1.)
1542 *
1543 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1544 * we just return INT_MAX.
1545 */
1546 return pending < INT_MAX ? (int)pending : INT_MAX;
1547}
1548
1549int SSL_has_pending(const SSL *s)
1550{
1551 /*
1552 * Similar to SSL_pending() but returns a 1 to indicate that we have
1553 * processed or unprocessed data available or 0 otherwise (as opposed to the
1554 * number of bytes available). Unlike SSL_pending() this will take into
1555 * account read_ahead data. A 1 return simply indicates that we have data.
1556 * That data may not result in any application data, or we may fail to parse
1557 * the records for some reason.
1558 */
1559
1560 /* Check buffered app data if any first */
1561 if (SSL_IS_DTLS(s)) {
1562 DTLS1_RECORD_DATA *rdata;
1563 pitem *item, *iter;
1564
1565 iter = pqueue_iterator(s->rlayer.d->buffered_app_data.q);
1566 while ((item = pqueue_next(&iter)) != NULL) {
1567 rdata = item->data;
1568 if (rdata->rrec.length > 0)
1569 return 1;
1570 }
1571 }
1572
1573 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1574 return 1;
1575
1576 return RECORD_LAYER_read_pending(&s->rlayer);
1577}
1578
1579X509 *SSL_get1_peer_certificate(const SSL *s)
1580{
1581 X509 *r = SSL_get0_peer_certificate(s);
1582
1583 if (r != NULL)
1584 X509_up_ref(r);
1585
1586 return r;
1587}
1588
1589X509 *SSL_get0_peer_certificate(const SSL *s)
1590{
1591 if ((s == NULL) || (s->session == NULL))
1592 return NULL;
1593 else
1594 return s->session->peer;
1595}
1596
1597STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1598{
1599 STACK_OF(X509) *r;
1600
1601 if ((s == NULL) || (s->session == NULL))
1602 r = NULL;
1603 else
1604 r = s->session->peer_chain;
1605
1606 /*
1607 * If we are a client, cert_chain includes the peer's own certificate; if
1608 * we are a server, it does not.
1609 */
1610
1611 return r;
1612}
1613
1614/*
1615 * Now in theory, since the calling process own 't' it should be safe to
1616 * modify. We need to be able to read f without being hassled
1617 */
1618int SSL_copy_session_id(SSL *t, const SSL *f)
1619{
1620 int i;
1621 /* Do we need to do SSL locking? */
1622 if (!SSL_set_session(t, SSL_get_session(f))) {
1623 return 0;
1624 }
1625
1626 /*
1627 * what if we are setup for one protocol version but want to talk another
1628 */
1629 if (t->method != f->method) {
1630 t->method->ssl_free(t);
1631 t->method = f->method;
1632 if (t->method->ssl_new(t) == 0)
1633 return 0;
1634 }
1635
1636 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1637 ssl_cert_free(t->cert);
1638 t->cert = f->cert;
1639 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1640 return 0;
1641 }
1642
1643 return 1;
1644}
1645
1646/* Fix this so it checks all the valid key/cert options */
1647int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1648{
1649 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1650 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1651 return 0;
1652 }
1653 if (ctx->cert->key->privatekey == NULL) {
1654 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1655 return 0;
1656 }
1657 return X509_check_private_key
1658 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1659}
1660
1661/* Fix this function so that it takes an optional type parameter */
1662int SSL_check_private_key(const SSL *ssl)
1663{
1664 if (ssl == NULL) {
1665 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1666 return 0;
1667 }
1668 if (ssl->cert->key->x509 == NULL) {
1669 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1670 return 0;
1671 }
1672 if (ssl->cert->key->privatekey == NULL) {
1673 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1674 return 0;
1675 }
1676 return X509_check_private_key(ssl->cert->key->x509,
1677 ssl->cert->key->privatekey);
1678}
1679
1680int SSL_waiting_for_async(SSL *s)
1681{
1682 if (s->job)
1683 return 1;
1684
1685 return 0;
1686}
1687
1688int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1689{
1690 ASYNC_WAIT_CTX *ctx = s->waitctx;
1691
1692 if (ctx == NULL)
1693 return 0;
1694 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1695}
1696
1697int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1698 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1699{
1700 ASYNC_WAIT_CTX *ctx = s->waitctx;
1701
1702 if (ctx == NULL)
1703 return 0;
1704 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1705 numdelfds);
1706}
1707
1708int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1709{
1710 ctx->async_cb = callback;
1711 return 1;
1712}
1713
1714int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1715{
1716 ctx->async_cb_arg = arg;
1717 return 1;
1718}
1719
1720int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1721{
1722 s->async_cb = callback;
1723 return 1;
1724}
1725
1726int SSL_set_async_callback_arg(SSL *s, void *arg)
1727{
1728 s->async_cb_arg = arg;
1729 return 1;
1730}
1731
1732int SSL_get_async_status(SSL *s, int *status)
1733{
1734 ASYNC_WAIT_CTX *ctx = s->waitctx;
1735
1736 if (ctx == NULL)
1737 return 0;
1738 *status = ASYNC_WAIT_CTX_get_status(ctx);
1739 return 1;
1740}
1741
1742int SSL_accept(SSL *s)
1743{
1744 if (s->handshake_func == NULL) {
1745 /* Not properly initialized yet */
1746 SSL_set_accept_state(s);
1747 }
1748
1749 return SSL_do_handshake(s);
1750}
1751
1752int SSL_connect(SSL *s)
1753{
1754 if (s->handshake_func == NULL) {
1755 /* Not properly initialized yet */
1756 SSL_set_connect_state(s);
1757 }
1758
1759 return SSL_do_handshake(s);
1760}
1761
1762long SSL_get_default_timeout(const SSL *s)
1763{
1764 return s->method->get_timeout();
1765}
1766
1767static int ssl_async_wait_ctx_cb(void *arg)
1768{
1769 SSL *s = (SSL *)arg;
1770
1771 return s->async_cb(s, s->async_cb_arg);
1772}
1773
1774static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1775 int (*func) (void *))
1776{
1777 int ret;
1778 if (s->waitctx == NULL) {
1779 s->waitctx = ASYNC_WAIT_CTX_new();
1780 if (s->waitctx == NULL)
1781 return -1;
1782 if (s->async_cb != NULL
1783 && !ASYNC_WAIT_CTX_set_callback
1784 (s->waitctx, ssl_async_wait_ctx_cb, s))
1785 return -1;
1786 }
1787
1788 s->rwstate = SSL_NOTHING;
1789 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1790 sizeof(struct ssl_async_args))) {
1791 case ASYNC_ERR:
1792 s->rwstate = SSL_NOTHING;
1793 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
1794 return -1;
1795 case ASYNC_PAUSE:
1796 s->rwstate = SSL_ASYNC_PAUSED;
1797 return -1;
1798 case ASYNC_NO_JOBS:
1799 s->rwstate = SSL_ASYNC_NO_JOBS;
1800 return -1;
1801 case ASYNC_FINISH:
1802 s->job = NULL;
1803 return ret;
1804 default:
1805 s->rwstate = SSL_NOTHING;
1806 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
1807 /* Shouldn't happen */
1808 return -1;
1809 }
1810}
1811
1812static int ssl_io_intern(void *vargs)
1813{
1814 struct ssl_async_args *args;
1815 SSL *s;
1816 void *buf;
1817 size_t num;
1818
1819 args = (struct ssl_async_args *)vargs;
1820 s = args->s;
1821 buf = args->buf;
1822 num = args->num;
1823 switch (args->type) {
1824 case READFUNC:
1825 return args->f.func_read(s, buf, num, &s->asyncrw);
1826 case WRITEFUNC:
1827 return args->f.func_write(s, buf, num, &s->asyncrw);
1828 case OTHERFUNC:
1829 return args->f.func_other(s);
1830 }
1831 return -1;
1832}
1833
1834int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1835{
1836 if (s->handshake_func == NULL) {
1837 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
1838 return -1;
1839 }
1840
1841 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1842 s->rwstate = SSL_NOTHING;
1843 return 0;
1844 }
1845
1846 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1847 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1848 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1849 return 0;
1850 }
1851 /*
1852 * If we are a client and haven't received the ServerHello etc then we
1853 * better do that
1854 */
1855 ossl_statem_check_finish_init(s, 0);
1856
1857 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1858 struct ssl_async_args args;
1859 int ret;
1860
1861 args.s = s;
1862 args.buf = buf;
1863 args.num = num;
1864 args.type = READFUNC;
1865 args.f.func_read = s->method->ssl_read;
1866
1867 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1868 *readbytes = s->asyncrw;
1869 return ret;
1870 } else {
1871 return s->method->ssl_read(s, buf, num, readbytes);
1872 }
1873}
1874
1875int SSL_read(SSL *s, void *buf, int num)
1876{
1877 int ret;
1878 size_t readbytes;
1879
1880 if (num < 0) {
1881 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
1882 return -1;
1883 }
1884
1885 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1886
1887 /*
1888 * The cast is safe here because ret should be <= INT_MAX because num is
1889 * <= INT_MAX
1890 */
1891 if (ret > 0)
1892 ret = (int)readbytes;
1893
1894 return ret;
1895}
1896
1897int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1898{
1899 int ret = ssl_read_internal(s, buf, num, readbytes);
1900
1901 if (ret < 0)
1902 ret = 0;
1903 return ret;
1904}
1905
1906int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1907{
1908 int ret;
1909
1910 if (!s->server) {
1911 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1912 return SSL_READ_EARLY_DATA_ERROR;
1913 }
1914
1915 switch (s->early_data_state) {
1916 case SSL_EARLY_DATA_NONE:
1917 if (!SSL_in_before(s)) {
1918 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1919 return SSL_READ_EARLY_DATA_ERROR;
1920 }
1921 /* fall through */
1922
1923 case SSL_EARLY_DATA_ACCEPT_RETRY:
1924 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1925 ret = SSL_accept(s);
1926 if (ret <= 0) {
1927 /* NBIO or error */
1928 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1929 return SSL_READ_EARLY_DATA_ERROR;
1930 }
1931 /* fall through */
1932
1933 case SSL_EARLY_DATA_READ_RETRY:
1934 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1935 s->early_data_state = SSL_EARLY_DATA_READING;
1936 ret = SSL_read_ex(s, buf, num, readbytes);
1937 /*
1938 * State machine will update early_data_state to
1939 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1940 * message
1941 */
1942 if (ret > 0 || (ret <= 0 && s->early_data_state
1943 != SSL_EARLY_DATA_FINISHED_READING)) {
1944 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1945 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1946 : SSL_READ_EARLY_DATA_ERROR;
1947 }
1948 } else {
1949 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1950 }
1951 *readbytes = 0;
1952 return SSL_READ_EARLY_DATA_FINISH;
1953
1954 default:
1955 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1956 return SSL_READ_EARLY_DATA_ERROR;
1957 }
1958}
1959
1960int SSL_get_early_data_status(const SSL *s)
1961{
1962 return s->ext.early_data;
1963}
1964
1965static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1966{
1967 if (s->handshake_func == NULL) {
1968 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
1969 return -1;
1970 }
1971
1972 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1973 return 0;
1974 }
1975 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1976 struct ssl_async_args args;
1977 int ret;
1978
1979 args.s = s;
1980 args.buf = buf;
1981 args.num = num;
1982 args.type = READFUNC;
1983 args.f.func_read = s->method->ssl_peek;
1984
1985 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1986 *readbytes = s->asyncrw;
1987 return ret;
1988 } else {
1989 return s->method->ssl_peek(s, buf, num, readbytes);
1990 }
1991}
1992
1993int SSL_peek(SSL *s, void *buf, int num)
1994{
1995 int ret;
1996 size_t readbytes;
1997
1998 if (num < 0) {
1999 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2000 return -1;
2001 }
2002
2003 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2004
2005 /*
2006 * The cast is safe here because ret should be <= INT_MAX because num is
2007 * <= INT_MAX
2008 */
2009 if (ret > 0)
2010 ret = (int)readbytes;
2011
2012 return ret;
2013}
2014
2015
2016int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2017{
2018 int ret = ssl_peek_internal(s, buf, num, readbytes);
2019
2020 if (ret < 0)
2021 ret = 0;
2022 return ret;
2023}
2024
2025int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2026{
2027 if (s->handshake_func == NULL) {
2028 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2029 return -1;
2030 }
2031
2032 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2033 s->rwstate = SSL_NOTHING;
2034 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2035 return -1;
2036 }
2037
2038 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2039 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2040 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2041 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2042 return 0;
2043 }
2044 /* If we are a client and haven't sent the Finished we better do that */
2045 ossl_statem_check_finish_init(s, 1);
2046
2047 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2048 int ret;
2049 struct ssl_async_args args;
2050
2051 args.s = s;
2052 args.buf = (void *)buf;
2053 args.num = num;
2054 args.type = WRITEFUNC;
2055 args.f.func_write = s->method->ssl_write;
2056
2057 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2058 *written = s->asyncrw;
2059 return ret;
2060 } else {
2061 return s->method->ssl_write(s, buf, num, written);
2062 }
2063}
2064
2065ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2066{
2067 ossl_ssize_t ret;
2068
2069 if (s->handshake_func == NULL) {
2070 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2071 return -1;
2072 }
2073
2074 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2075 s->rwstate = SSL_NOTHING;
2076 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2077 return -1;
2078 }
2079
2080 if (!BIO_get_ktls_send(s->wbio)) {
2081 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2082 return -1;
2083 }
2084
2085 /* If we have an alert to send, lets send it */
2086 if (s->s3.alert_dispatch) {
2087 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2088 if (ret <= 0) {
2089 /* SSLfatal() already called if appropriate */
2090 return ret;
2091 }
2092 /* if it went, fall through and send more stuff */
2093 }
2094
2095 s->rwstate = SSL_WRITING;
2096 if (BIO_flush(s->wbio) <= 0) {
2097 if (!BIO_should_retry(s->wbio)) {
2098 s->rwstate = SSL_NOTHING;
2099 } else {
2100#ifdef EAGAIN
2101 set_sys_error(EAGAIN);
2102#endif
2103 }
2104 return -1;
2105 }
2106
2107#ifdef OPENSSL_NO_KTLS
2108 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2109 "can't call ktls_sendfile(), ktls disabled");
2110 return -1;
2111#else
2112 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2113 if (ret < 0) {
2114#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2115 if ((get_last_sys_error() == EAGAIN) ||
2116 (get_last_sys_error() == EINTR) ||
2117 (get_last_sys_error() == EBUSY))
2118 BIO_set_retry_write(s->wbio);
2119 else
2120#endif
2121 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2122 return ret;
2123 }
2124 s->rwstate = SSL_NOTHING;
2125 return ret;
2126#endif
2127}
2128
2129int SSL_write(SSL *s, const void *buf, int num)
2130{
2131 int ret;
2132 size_t written;
2133
2134 if (num < 0) {
2135 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2136 return -1;
2137 }
2138
2139 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2140
2141 /*
2142 * The cast is safe here because ret should be <= INT_MAX because num is
2143 * <= INT_MAX
2144 */
2145 if (ret > 0)
2146 ret = (int)written;
2147
2148 return ret;
2149}
2150
2151int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2152{
2153 int ret = ssl_write_internal(s, buf, num, written);
2154
2155 if (ret < 0)
2156 ret = 0;
2157 return ret;
2158}
2159
2160int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2161{
2162 int ret, early_data_state;
2163 size_t writtmp;
2164 uint32_t partialwrite;
2165
2166 switch (s->early_data_state) {
2167 case SSL_EARLY_DATA_NONE:
2168 if (s->server
2169 || !SSL_in_before(s)
2170 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2171 && (s->psk_use_session_cb == NULL))) {
2172 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2173 return 0;
2174 }
2175 /* fall through */
2176
2177 case SSL_EARLY_DATA_CONNECT_RETRY:
2178 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2179 ret = SSL_connect(s);
2180 if (ret <= 0) {
2181 /* NBIO or error */
2182 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2183 return 0;
2184 }
2185 /* fall through */
2186
2187 case SSL_EARLY_DATA_WRITE_RETRY:
2188 s->early_data_state = SSL_EARLY_DATA_WRITING;
2189 /*
2190 * We disable partial write for early data because we don't keep track
2191 * of how many bytes we've written between the SSL_write_ex() call and
2192 * the flush if the flush needs to be retried)
2193 */
2194 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2195 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2196 ret = SSL_write_ex(s, buf, num, &writtmp);
2197 s->mode |= partialwrite;
2198 if (!ret) {
2199 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2200 return ret;
2201 }
2202 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2203 /* fall through */
2204
2205 case SSL_EARLY_DATA_WRITE_FLUSH:
2206 /* The buffering BIO is still in place so we need to flush it */
2207 if (statem_flush(s) != 1)
2208 return 0;
2209 *written = num;
2210 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2211 return 1;
2212
2213 case SSL_EARLY_DATA_FINISHED_READING:
2214 case SSL_EARLY_DATA_READ_RETRY:
2215 early_data_state = s->early_data_state;
2216 /* We are a server writing to an unauthenticated client */
2217 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2218 ret = SSL_write_ex(s, buf, num, written);
2219 /* The buffering BIO is still in place */
2220 if (ret)
2221 (void)BIO_flush(s->wbio);
2222 s->early_data_state = early_data_state;
2223 return ret;
2224
2225 default:
2226 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2227 return 0;
2228 }
2229}
2230
2231int SSL_shutdown(SSL *s)
2232{
2233 /*
2234 * Note that this function behaves differently from what one might
2235 * expect. Return values are 0 for no success (yet), 1 for success; but
2236 * calling it once is usually not enough, even if blocking I/O is used
2237 * (see ssl3_shutdown).
2238 */
2239
2240 if (s->handshake_func == NULL) {
2241 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2242 return -1;
2243 }
2244
2245 if (!SSL_in_init(s)) {
2246 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2247 struct ssl_async_args args;
2248
2249 memset(&args, 0, sizeof(args));
2250 args.s = s;
2251 args.type = OTHERFUNC;
2252 args.f.func_other = s->method->ssl_shutdown;
2253
2254 return ssl_start_async_job(s, &args, ssl_io_intern);
2255 } else {
2256 return s->method->ssl_shutdown(s);
2257 }
2258 } else {
2259 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2260 return -1;
2261 }
2262}
2263
2264int SSL_key_update(SSL *s, int updatetype)
2265{
2266 if (!SSL_IS_TLS13(s)) {
2267 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2268 return 0;
2269 }
2270
2271 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2272 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2273 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2274 return 0;
2275 }
2276
2277 if (!SSL_is_init_finished(s)) {
2278 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2279 return 0;
2280 }
2281
2282 if (RECORD_LAYER_write_pending(&s->rlayer)) {
2283 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2284 return 0;
2285 }
2286
2287 ossl_statem_set_in_init(s, 1);
2288 s->key_update = updatetype;
2289 return 1;
2290}
2291
2292int SSL_get_key_update_type(const SSL *s)
2293{
2294 return s->key_update;
2295}
2296
2297/*
2298 * Can we accept a renegotiation request? If yes, set the flag and
2299 * return 1 if yes. If not, raise error and return 0.
2300 */
2301static int can_renegotiate(const SSL *s)
2302{
2303 if (SSL_IS_TLS13(s)) {
2304 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2305 return 0;
2306 }
2307
2308 if ((s->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2309 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2310 return 0;
2311 }
2312
2313 return 1;
2314}
2315
2316int SSL_renegotiate(SSL *s)
2317{
2318 if (!can_renegotiate(s))
2319 return 0;
2320
2321 s->renegotiate = 1;
2322 s->new_session = 1;
2323 return s->method->ssl_renegotiate(s);
2324}
2325
2326int SSL_renegotiate_abbreviated(SSL *s)
2327{
2328 if (!can_renegotiate(s))
2329 return 0;
2330
2331 s->renegotiate = 1;
2332 s->new_session = 0;
2333 return s->method->ssl_renegotiate(s);
2334}
2335
2336int SSL_renegotiate_pending(const SSL *s)
2337{
2338 /*
2339 * becomes true when negotiation is requested; false again once a
2340 * handshake has finished
2341 */
2342 return (s->renegotiate != 0);
2343}
2344
2345int SSL_new_session_ticket(SSL *s)
2346{
2347 /* If we are in init because we're sending tickets, okay to send more. */
2348 if ((SSL_in_init(s) && s->ext.extra_tickets_expected == 0)
2349 || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2350 || !SSL_IS_TLS13(s))
2351 return 0;
2352 s->ext.extra_tickets_expected++;
2353 if (!RECORD_LAYER_write_pending(&s->rlayer) && !SSL_in_init(s))
2354 ossl_statem_set_in_init(s, 1);
2355 return 1;
2356}
2357
2358long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2359{
2360 long l;
2361
2362 switch (cmd) {
2363 case SSL_CTRL_GET_READ_AHEAD:
2364 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2365 case SSL_CTRL_SET_READ_AHEAD:
2366 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2367 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2368 return l;
2369
2370 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2371 s->msg_callback_arg = parg;
2372 return 1;
2373
2374 case SSL_CTRL_MODE:
2375 return (s->mode |= larg);
2376 case SSL_CTRL_CLEAR_MODE:
2377 return (s->mode &= ~larg);
2378 case SSL_CTRL_GET_MAX_CERT_LIST:
2379 return (long)s->max_cert_list;
2380 case SSL_CTRL_SET_MAX_CERT_LIST:
2381 if (larg < 0)
2382 return 0;
2383 l = (long)s->max_cert_list;
2384 s->max_cert_list = (size_t)larg;
2385 return l;
2386 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2387 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2388 return 0;
2389#ifndef OPENSSL_NO_KTLS
2390 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2391 return 0;
2392#endif /* OPENSSL_NO_KTLS */
2393 s->max_send_fragment = larg;
2394 if (s->max_send_fragment < s->split_send_fragment)
2395 s->split_send_fragment = s->max_send_fragment;
2396 return 1;
2397 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2398 if ((size_t)larg > s->max_send_fragment || larg == 0)
2399 return 0;
2400 s->split_send_fragment = larg;
2401 return 1;
2402 case SSL_CTRL_SET_MAX_PIPELINES:
2403 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2404 return 0;
2405 s->max_pipelines = larg;
2406 if (larg > 1)
2407 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2408 return 1;
2409 case SSL_CTRL_GET_RI_SUPPORT:
2410 return s->s3.send_connection_binding;
2411 case SSL_CTRL_SET_RETRY_VERIFY:
2412 s->rwstate = SSL_RETRY_VERIFY;
2413 return 1;
2414 case SSL_CTRL_CERT_FLAGS:
2415 return (s->cert->cert_flags |= larg);
2416 case SSL_CTRL_CLEAR_CERT_FLAGS:
2417 return (s->cert->cert_flags &= ~larg);
2418
2419 case SSL_CTRL_GET_RAW_CIPHERLIST:
2420 if (parg) {
2421 if (s->s3.tmp.ciphers_raw == NULL)
2422 return 0;
2423 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2424 return (int)s->s3.tmp.ciphers_rawlen;
2425 } else {
2426 return TLS_CIPHER_LEN;
2427 }
2428 case SSL_CTRL_GET_EXTMS_SUPPORT:
2429 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2430 return -1;
2431 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2432 return 1;
2433 else
2434 return 0;
2435 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2436 return ssl_check_allowed_versions(larg, s->max_proto_version)
2437 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2438 &s->min_proto_version);
2439 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2440 return s->min_proto_version;
2441 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2442 return ssl_check_allowed_versions(s->min_proto_version, larg)
2443 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2444 &s->max_proto_version);
2445 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2446 return s->max_proto_version;
2447 default:
2448 return s->method->ssl_ctrl(s, cmd, larg, parg);
2449 }
2450}
2451
2452long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2453{
2454 switch (cmd) {
2455 case SSL_CTRL_SET_MSG_CALLBACK:
2456 s->msg_callback = (void (*)
2457 (int write_p, int version, int content_type,
2458 const void *buf, size_t len, SSL *ssl,
2459 void *arg))(fp);
2460 return 1;
2461
2462 default:
2463 return s->method->ssl_callback_ctrl(s, cmd, fp);
2464 }
2465}
2466
2467LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2468{
2469 return ctx->sessions;
2470}
2471
2472static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2473{
2474 int res = 0;
2475
2476 if (ssl_tsan_lock(ctx)) {
2477 res = tsan_load(stat);
2478 ssl_tsan_unlock(ctx);
2479 }
2480 return res;
2481}
2482
2483long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2484{
2485 long l;
2486 /* For some cases with ctx == NULL perform syntax checks */
2487 if (ctx == NULL) {
2488 switch (cmd) {
2489 case SSL_CTRL_SET_GROUPS_LIST:
2490 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2491 case SSL_CTRL_SET_SIGALGS_LIST:
2492 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2493 return tls1_set_sigalgs_list(NULL, parg, 0);
2494 default:
2495 return 0;
2496 }
2497 }
2498
2499 switch (cmd) {
2500 case SSL_CTRL_GET_READ_AHEAD:
2501 return ctx->read_ahead;
2502 case SSL_CTRL_SET_READ_AHEAD:
2503 l = ctx->read_ahead;
2504 ctx->read_ahead = larg;
2505 return l;
2506
2507 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2508 ctx->msg_callback_arg = parg;
2509 return 1;
2510
2511 case SSL_CTRL_GET_MAX_CERT_LIST:
2512 return (long)ctx->max_cert_list;
2513 case SSL_CTRL_SET_MAX_CERT_LIST:
2514 if (larg < 0)
2515 return 0;
2516 l = (long)ctx->max_cert_list;
2517 ctx->max_cert_list = (size_t)larg;
2518 return l;
2519
2520 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2521 if (larg < 0)
2522 return 0;
2523 l = (long)ctx->session_cache_size;
2524 ctx->session_cache_size = (size_t)larg;
2525 return l;
2526 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2527 return (long)ctx->session_cache_size;
2528 case SSL_CTRL_SET_SESS_CACHE_MODE:
2529 l = ctx->session_cache_mode;
2530 ctx->session_cache_mode = larg;
2531 return l;
2532 case SSL_CTRL_GET_SESS_CACHE_MODE:
2533 return ctx->session_cache_mode;
2534
2535 case SSL_CTRL_SESS_NUMBER:
2536 return lh_SSL_SESSION_num_items(ctx->sessions);
2537 case SSL_CTRL_SESS_CONNECT:
2538 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2539 case SSL_CTRL_SESS_CONNECT_GOOD:
2540 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2541 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2542 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2543 case SSL_CTRL_SESS_ACCEPT:
2544 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2545 case SSL_CTRL_SESS_ACCEPT_GOOD:
2546 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2547 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2548 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2549 case SSL_CTRL_SESS_HIT:
2550 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2551 case SSL_CTRL_SESS_CB_HIT:
2552 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2553 case SSL_CTRL_SESS_MISSES:
2554 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2555 case SSL_CTRL_SESS_TIMEOUTS:
2556 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2557 case SSL_CTRL_SESS_CACHE_FULL:
2558 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2559 case SSL_CTRL_MODE:
2560 return (ctx->mode |= larg);
2561 case SSL_CTRL_CLEAR_MODE:
2562 return (ctx->mode &= ~larg);
2563 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2564 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2565 return 0;
2566 ctx->max_send_fragment = larg;
2567 if (ctx->max_send_fragment < ctx->split_send_fragment)
2568 ctx->split_send_fragment = ctx->max_send_fragment;
2569 return 1;
2570 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2571 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2572 return 0;
2573 ctx->split_send_fragment = larg;
2574 return 1;
2575 case SSL_CTRL_SET_MAX_PIPELINES:
2576 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2577 return 0;
2578 ctx->max_pipelines = larg;
2579 return 1;
2580 case SSL_CTRL_CERT_FLAGS:
2581 return (ctx->cert->cert_flags |= larg);
2582 case SSL_CTRL_CLEAR_CERT_FLAGS:
2583 return (ctx->cert->cert_flags &= ~larg);
2584 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2585 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2586 && ssl_set_version_bound(ctx->method->version, (int)larg,
2587 &ctx->min_proto_version);
2588 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2589 return ctx->min_proto_version;
2590 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2591 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2592 && ssl_set_version_bound(ctx->method->version, (int)larg,
2593 &ctx->max_proto_version);
2594 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2595 return ctx->max_proto_version;
2596 default:
2597 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2598 }
2599}
2600
2601long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2602{
2603 switch (cmd) {
2604 case SSL_CTRL_SET_MSG_CALLBACK:
2605 ctx->msg_callback = (void (*)
2606 (int write_p, int version, int content_type,
2607 const void *buf, size_t len, SSL *ssl,
2608 void *arg))(fp);
2609 return 1;
2610
2611 default:
2612 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2613 }
2614}
2615
2616int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2617{
2618 if (a->id > b->id)
2619 return 1;
2620 if (a->id < b->id)
2621 return -1;
2622 return 0;
2623}
2624
2625int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2626 const SSL_CIPHER *const *bp)
2627{
2628 if ((*ap)->id > (*bp)->id)
2629 return 1;
2630 if ((*ap)->id < (*bp)->id)
2631 return -1;
2632 return 0;
2633}
2634
2635/** return a STACK of the ciphers available for the SSL and in order of
2636 * preference */
2637STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2638{
2639 if (s != NULL) {
2640 if (s->cipher_list != NULL) {
2641 return s->cipher_list;
2642 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2643 return s->ctx->cipher_list;
2644 }
2645 }
2646 return NULL;
2647}
2648
2649STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2650{
2651 if ((s == NULL) || !s->server)
2652 return NULL;
2653 return s->peer_ciphers;
2654}
2655
2656STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2657{
2658 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2659 int i;
2660
2661 ciphers = SSL_get_ciphers(s);
2662 if (!ciphers)
2663 return NULL;
2664 if (!ssl_set_client_disabled(s))
2665 return NULL;
2666 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2667 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2668 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2669 if (!sk)
2670 sk = sk_SSL_CIPHER_new_null();
2671 if (!sk)
2672 return NULL;
2673 if (!sk_SSL_CIPHER_push(sk, c)) {
2674 sk_SSL_CIPHER_free(sk);
2675 return NULL;
2676 }
2677 }
2678 }
2679 return sk;
2680}
2681
2682/** return a STACK of the ciphers available for the SSL and in order of
2683 * algorithm id */
2684STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2685{
2686 if (s != NULL) {
2687 if (s->cipher_list_by_id != NULL) {
2688 return s->cipher_list_by_id;
2689 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2690 return s->ctx->cipher_list_by_id;
2691 }
2692 }
2693 return NULL;
2694}
2695
2696/** The old interface to get the same thing as SSL_get_ciphers() */
2697const char *SSL_get_cipher_list(const SSL *s, int n)
2698{
2699 const SSL_CIPHER *c;
2700 STACK_OF(SSL_CIPHER) *sk;
2701
2702 if (s == NULL)
2703 return NULL;
2704 sk = SSL_get_ciphers(s);
2705 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2706 return NULL;
2707 c = sk_SSL_CIPHER_value(sk, n);
2708 if (c == NULL)
2709 return NULL;
2710 return c->name;
2711}
2712
2713/** return a STACK of the ciphers available for the SSL_CTX and in order of
2714 * preference */
2715STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2716{
2717 if (ctx != NULL)
2718 return ctx->cipher_list;
2719 return NULL;
2720}
2721
2722/*
2723 * Distinguish between ciphers controlled by set_ciphersuite() and
2724 * set_cipher_list() when counting.
2725 */
2726static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2727{
2728 int i, num = 0;
2729 const SSL_CIPHER *c;
2730
2731 if (sk == NULL)
2732 return 0;
2733 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2734 c = sk_SSL_CIPHER_value(sk, i);
2735 if (c->min_tls >= TLS1_3_VERSION)
2736 continue;
2737 num++;
2738 }
2739 return num;
2740}
2741
2742/** specify the ciphers to be used by default by the SSL_CTX */
2743int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2744{
2745 STACK_OF(SSL_CIPHER) *sk;
2746
2747 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
2748 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2749 ctx->cert);
2750 /*
2751 * ssl_create_cipher_list may return an empty stack if it was unable to
2752 * find a cipher matching the given rule string (for example if the rule
2753 * string specifies a cipher which has been disabled). This is not an
2754 * error as far as ssl_create_cipher_list is concerned, and hence
2755 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2756 */
2757 if (sk == NULL)
2758 return 0;
2759 else if (cipher_list_tls12_num(sk) == 0) {
2760 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
2761 return 0;
2762 }
2763 return 1;
2764}
2765
2766/** specify the ciphers to be used by the SSL */
2767int SSL_set_cipher_list(SSL *s, const char *str)
2768{
2769 STACK_OF(SSL_CIPHER) *sk;
2770
2771 sk = ssl_create_cipher_list(s->ctx, s->tls13_ciphersuites,
2772 &s->cipher_list, &s->cipher_list_by_id, str,
2773 s->cert);
2774 /* see comment in SSL_CTX_set_cipher_list */
2775 if (sk == NULL)
2776 return 0;
2777 else if (cipher_list_tls12_num(sk) == 0) {
2778 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
2779 return 0;
2780 }
2781 return 1;
2782}
2783
2784char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2785{
2786 char *p;
2787 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2788 const SSL_CIPHER *c;
2789 int i;
2790
2791 if (!s->server
2792 || s->peer_ciphers == NULL
2793 || size < 2)
2794 return NULL;
2795
2796 p = buf;
2797 clntsk = s->peer_ciphers;
2798 srvrsk = SSL_get_ciphers(s);
2799 if (clntsk == NULL || srvrsk == NULL)
2800 return NULL;
2801
2802 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2803 return NULL;
2804
2805 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2806 int n;
2807
2808 c = sk_SSL_CIPHER_value(clntsk, i);
2809 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2810 continue;
2811
2812 n = strlen(c->name);
2813 if (n + 1 > size) {
2814 if (p != buf)
2815 --p;
2816 *p = '\0';
2817 return buf;
2818 }
2819 strcpy(p, c->name);
2820 p += n;
2821 *(p++) = ':';
2822 size -= n + 1;
2823 }
2824 p[-1] = '\0';
2825 return buf;
2826}
2827
2828/**
2829 * Return the requested servername (SNI) value. Note that the behaviour varies
2830 * depending on:
2831 * - whether this is called by the client or the server,
2832 * - if we are before or during/after the handshake,
2833 * - if a resumption or normal handshake is being attempted/has occurred
2834 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2835 *
2836 * Note that only the host_name type is defined (RFC 3546).
2837 */
2838const char *SSL_get_servername(const SSL *s, const int type)
2839{
2840 /*
2841 * If we don't know if we are the client or the server yet then we assume
2842 * client.
2843 */
2844 int server = s->handshake_func == NULL ? 0 : s->server;
2845 if (type != TLSEXT_NAMETYPE_host_name)
2846 return NULL;
2847
2848 if (server) {
2849 /**
2850 * Server side
2851 * In TLSv1.3 on the server SNI is not associated with the session
2852 * but in TLSv1.2 or below it is.
2853 *
2854 * Before the handshake:
2855 * - return NULL
2856 *
2857 * During/after the handshake (TLSv1.2 or below resumption occurred):
2858 * - If a servername was accepted by the server in the original
2859 * handshake then it will return that servername, or NULL otherwise.
2860 *
2861 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2862 * - The function will return the servername requested by the client in
2863 * this handshake or NULL if none was requested.
2864 */
2865 if (s->hit && !SSL_IS_TLS13(s))
2866 return s->session->ext.hostname;
2867 } else {
2868 /**
2869 * Client side
2870 *
2871 * Before the handshake:
2872 * - If a servername has been set via a call to
2873 * SSL_set_tlsext_host_name() then it will return that servername
2874 * - If one has not been set, but a TLSv1.2 resumption is being
2875 * attempted and the session from the original handshake had a
2876 * servername accepted by the server then it will return that
2877 * servername
2878 * - Otherwise it returns NULL
2879 *
2880 * During/after the handshake (TLSv1.2 or below resumption occurred):
2881 * - If the session from the original handshake had a servername accepted
2882 * by the server then it will return that servername.
2883 * - Otherwise it returns the servername set via
2884 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2885 *
2886 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2887 * - It will return the servername set via SSL_set_tlsext_host_name()
2888 * (or NULL if it was not called).
2889 */
2890 if (SSL_in_before(s)) {
2891 if (s->ext.hostname == NULL
2892 && s->session != NULL
2893 && s->session->ssl_version != TLS1_3_VERSION)
2894 return s->session->ext.hostname;
2895 } else {
2896 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2897 return s->session->ext.hostname;
2898 }
2899 }
2900
2901 return s->ext.hostname;
2902}
2903
2904int SSL_get_servername_type(const SSL *s)
2905{
2906 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2907 return TLSEXT_NAMETYPE_host_name;
2908 return -1;
2909}
2910
2911/*
2912 * SSL_select_next_proto implements the standard protocol selection. It is
2913 * expected that this function is called from the callback set by
2914 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2915 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2916 * not included in the length. A byte string of length 0 is invalid. No byte
2917 * string may be truncated. The current, but experimental algorithm for
2918 * selecting the protocol is: 1) If the server doesn't support NPN then this
2919 * is indicated to the callback. In this case, the client application has to
2920 * abort the connection or have a default application level protocol. 2) If
2921 * the server supports NPN, but advertises an empty list then the client
2922 * selects the first protocol in its list, but indicates via the API that this
2923 * fallback case was enacted. 3) Otherwise, the client finds the first
2924 * protocol in the server's list that it supports and selects this protocol.
2925 * This is because it's assumed that the server has better information about
2926 * which protocol a client should use. 4) If the client doesn't support any
2927 * of the server's advertised protocols, then this is treated the same as
2928 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2929 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2930 */
2931int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2932 const unsigned char *server,
2933 unsigned int server_len,
2934 const unsigned char *client, unsigned int client_len)
2935{
2936 unsigned int i, j;
2937 const unsigned char *result;
2938 int status = OPENSSL_NPN_UNSUPPORTED;
2939
2940 /*
2941 * For each protocol in server preference order, see if we support it.
2942 */
2943 for (i = 0; i < server_len;) {
2944 for (j = 0; j < client_len;) {
2945 if (server[i] == client[j] &&
2946 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2947 /* We found a match */
2948 result = &server[i];
2949 status = OPENSSL_NPN_NEGOTIATED;
2950 goto found;
2951 }
2952 j += client[j];
2953 j++;
2954 }
2955 i += server[i];
2956 i++;
2957 }
2958
2959 /* There's no overlap between our protocols and the server's list. */
2960 result = client;
2961 status = OPENSSL_NPN_NO_OVERLAP;
2962
2963 found:
2964 *out = (unsigned char *)result + 1;
2965 *outlen = result[0];
2966 return status;
2967}
2968
2969#ifndef OPENSSL_NO_NEXTPROTONEG
2970/*
2971 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2972 * client's requested protocol for this connection and returns 0. If the
2973 * client didn't request any protocol, then *data is set to NULL. Note that
2974 * the client can request any protocol it chooses. The value returned from
2975 * this function need not be a member of the list of supported protocols
2976 * provided by the callback.
2977 */
2978void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2979 unsigned *len)
2980{
2981 *data = s->ext.npn;
2982 if (*data == NULL) {
2983 *len = 0;
2984 } else {
2985 *len = (unsigned int)s->ext.npn_len;
2986 }
2987}
2988
2989/*
2990 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2991 * a TLS server needs a list of supported protocols for Next Protocol
2992 * Negotiation. The returned list must be in wire format. The list is
2993 * returned by setting |out| to point to it and |outlen| to its length. This
2994 * memory will not be modified, but one should assume that the SSL* keeps a
2995 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2996 * wishes to advertise. Otherwise, no such extension will be included in the
2997 * ServerHello.
2998 */
2999void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3000 SSL_CTX_npn_advertised_cb_func cb,
3001 void *arg)
3002{
3003 ctx->ext.npn_advertised_cb = cb;
3004 ctx->ext.npn_advertised_cb_arg = arg;
3005}
3006
3007/*
3008 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3009 * client needs to select a protocol from the server's provided list. |out|
3010 * must be set to point to the selected protocol (which may be within |in|).
3011 * The length of the protocol name must be written into |outlen|. The
3012 * server's advertised protocols are provided in |in| and |inlen|. The
3013 * callback can assume that |in| is syntactically valid. The client must
3014 * select a protocol. It is fatal to the connection if this callback returns
3015 * a value other than SSL_TLSEXT_ERR_OK.
3016 */
3017void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3018 SSL_CTX_npn_select_cb_func cb,
3019 void *arg)
3020{
3021 ctx->ext.npn_select_cb = cb;
3022 ctx->ext.npn_select_cb_arg = arg;
3023}
3024#endif
3025
3026static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3027{
3028 unsigned int idx;
3029
3030 if (protos_len < 2 || protos == NULL)
3031 return 0;
3032
3033 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3034 if (protos[idx] == 0)
3035 return 0;
3036 }
3037 return idx == protos_len;
3038}
3039/*
3040 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3041 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3042 * length-prefixed strings). Returns 0 on success.
3043 */
3044int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3045 unsigned int protos_len)
3046{
3047 unsigned char *alpn;
3048
3049 if (protos_len == 0 || protos == NULL) {
3050 OPENSSL_free(ctx->ext.alpn);
3051 ctx->ext.alpn = NULL;
3052 ctx->ext.alpn_len = 0;
3053 return 0;
3054 }
3055 /* Not valid per RFC */
3056 if (!alpn_value_ok(protos, protos_len))
3057 return 1;
3058
3059 alpn = OPENSSL_memdup(protos, protos_len);
3060 if (alpn == NULL) {
3061 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3062 return 1;
3063 }
3064 OPENSSL_free(ctx->ext.alpn);
3065 ctx->ext.alpn = alpn;
3066 ctx->ext.alpn_len = protos_len;
3067
3068 return 0;
3069}
3070
3071/*
3072 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3073 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3074 * length-prefixed strings). Returns 0 on success.
3075 */
3076int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3077 unsigned int protos_len)
3078{
3079 unsigned char *alpn;
3080
3081 if (protos_len == 0 || protos == NULL) {
3082 OPENSSL_free(ssl->ext.alpn);
3083 ssl->ext.alpn = NULL;
3084 ssl->ext.alpn_len = 0;
3085 return 0;
3086 }
3087 /* Not valid per RFC */
3088 if (!alpn_value_ok(protos, protos_len))
3089 return 1;
3090
3091 alpn = OPENSSL_memdup(protos, protos_len);
3092 if (alpn == NULL) {
3093 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3094 return 1;
3095 }
3096 OPENSSL_free(ssl->ext.alpn);
3097 ssl->ext.alpn = alpn;
3098 ssl->ext.alpn_len = protos_len;
3099
3100 return 0;
3101}
3102
3103/*
3104 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3105 * called during ClientHello processing in order to select an ALPN protocol
3106 * from the client's list of offered protocols.
3107 */
3108void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3109 SSL_CTX_alpn_select_cb_func cb,
3110 void *arg)
3111{
3112 ctx->ext.alpn_select_cb = cb;
3113 ctx->ext.alpn_select_cb_arg = arg;
3114}
3115
3116/*
3117 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3118 * On return it sets |*data| to point to |*len| bytes of protocol name
3119 * (not including the leading length-prefix byte). If the server didn't
3120 * respond with a negotiated protocol then |*len| will be zero.
3121 */
3122void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3123 unsigned int *len)
3124{
3125 *data = ssl->s3.alpn_selected;
3126 if (*data == NULL)
3127 *len = 0;
3128 else
3129 *len = (unsigned int)ssl->s3.alpn_selected_len;
3130}
3131
3132int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3133 const char *label, size_t llen,
3134 const unsigned char *context, size_t contextlen,
3135 int use_context)
3136{
3137 if (s->session == NULL
3138 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3139 return -1;
3140
3141 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3142 llen, context,
3143 contextlen, use_context);
3144}
3145
3146int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3147 const char *label, size_t llen,
3148 const unsigned char *context,
3149 size_t contextlen)
3150{
3151 if (s->version != TLS1_3_VERSION)
3152 return 0;
3153
3154 return tls13_export_keying_material_early(s, out, olen, label, llen,
3155 context, contextlen);
3156}
3157
3158static unsigned long ssl_session_hash(const SSL_SESSION *a)
3159{
3160 const unsigned char *session_id = a->session_id;
3161 unsigned long l;
3162 unsigned char tmp_storage[4];
3163
3164 if (a->session_id_length < sizeof(tmp_storage)) {
3165 memset(tmp_storage, 0, sizeof(tmp_storage));
3166 memcpy(tmp_storage, a->session_id, a->session_id_length);
3167 session_id = tmp_storage;
3168 }
3169
3170 l = (unsigned long)
3171 ((unsigned long)session_id[0]) |
3172 ((unsigned long)session_id[1] << 8L) |
3173 ((unsigned long)session_id[2] << 16L) |
3174 ((unsigned long)session_id[3] << 24L);
3175 return l;
3176}
3177
3178/*
3179 * NB: If this function (or indeed the hash function which uses a sort of
3180 * coarser function than this one) is changed, ensure
3181 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3182 * being able to construct an SSL_SESSION that will collide with any existing
3183 * session with a matching session ID.
3184 */
3185static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3186{
3187 if (a->ssl_version != b->ssl_version)
3188 return 1;
3189 if (a->session_id_length != b->session_id_length)
3190 return 1;
3191 return memcmp(a->session_id, b->session_id, a->session_id_length);
3192}
3193
3194/*
3195 * These wrapper functions should remain rather than redeclaring
3196 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3197 * variable. The reason is that the functions aren't static, they're exposed
3198 * via ssl.h.
3199 */
3200
3201SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3202 const SSL_METHOD *meth)
3203{
3204 SSL_CTX *ret = NULL;
3205
3206 if (meth == NULL) {
3207 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3208 return NULL;
3209 }
3210
3211 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3212 return NULL;
3213
3214 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3215 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3216 goto err;
3217 }
3218 ret = OPENSSL_zalloc(sizeof(*ret));
3219 if (ret == NULL)
3220 goto err;
3221
3222 /* Init the reference counting before any call to SSL_CTX_free */
3223 ret->references = 1;
3224 ret->lock = CRYPTO_THREAD_lock_new();
3225 if (ret->lock == NULL) {
3226 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3227 OPENSSL_free(ret);
3228 return NULL;
3229 }
3230
3231#ifdef TSAN_REQUIRES_LOCKING
3232 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3233 if (ret->tsan_lock == NULL) {
3234 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3235 goto err;
3236 }
3237#endif
3238
3239 ret->libctx = libctx;
3240 if (propq != NULL) {
3241 ret->propq = OPENSSL_strdup(propq);
3242 if (ret->propq == NULL)
3243 goto err;
3244 }
3245
3246 ret->method = meth;
3247 ret->min_proto_version = 0;
3248 ret->max_proto_version = 0;
3249 ret->mode = SSL_MODE_AUTO_RETRY;
3250 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3251 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3252 /* We take the system default. */
3253 ret->session_timeout = meth->get_timeout();
3254 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3255 ret->verify_mode = SSL_VERIFY_NONE;
3256 if ((ret->cert = ssl_cert_new()) == NULL)
3257 goto err;
3258
3259 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3260 if (ret->sessions == NULL)
3261 goto err;
3262 ret->cert_store = X509_STORE_new();
3263 if (ret->cert_store == NULL)
3264 goto err;
3265#ifndef OPENSSL_NO_CT
3266 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3267 if (ret->ctlog_store == NULL)
3268 goto err;
3269#endif
3270
3271 /* initialize cipher/digest methods table */
3272 if (!ssl_load_ciphers(ret))
3273 goto err2;
3274 /* initialise sig algs */
3275 if (!ssl_setup_sig_algs(ret))
3276 goto err2;
3277
3278
3279 if (!ssl_load_groups(ret))
3280 goto err2;
3281
3282 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3283 goto err;
3284
3285 if (!ssl_create_cipher_list(ret,
3286 ret->tls13_ciphersuites,
3287 &ret->cipher_list, &ret->cipher_list_by_id,
3288 OSSL_default_cipher_list(), ret->cert)
3289 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3290 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3291 goto err2;
3292 }
3293
3294 ret->param = X509_VERIFY_PARAM_new();
3295 if (ret->param == NULL)
3296 goto err;
3297
3298 /*
3299 * If these aren't available from the provider we'll get NULL returns.
3300 * That's fine but will cause errors later if SSLv3 is negotiated
3301 */
3302 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3303 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3304
3305 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3306 goto err;
3307
3308 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3309 goto err;
3310
3311 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3312 goto err;
3313
3314 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3315 goto err;
3316
3317 /* No compression for DTLS */
3318 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3319 ret->comp_methods = SSL_COMP_get_compression_methods();
3320
3321 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3322 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3323
3324 /* Setup RFC5077 ticket keys */
3325 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3326 sizeof(ret->ext.tick_key_name), 0) <= 0)
3327 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3328 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3329 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3330 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3331 ret->options |= SSL_OP_NO_TICKET;
3332
3333 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3334 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3335 goto err;
3336
3337#ifndef OPENSSL_NO_SRP
3338 if (!ssl_ctx_srp_ctx_init_intern(ret))
3339 goto err;
3340#endif
3341#ifndef OPENSSL_NO_ENGINE
3342# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3343# define eng_strx(x) #x
3344# define eng_str(x) eng_strx(x)
3345 /* Use specific client engine automatically... ignore errors */
3346 {
3347 ENGINE *eng;
3348 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3349 if (!eng) {
3350 ERR_clear_error();
3351 ENGINE_load_builtin_engines();
3352 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3353 }
3354 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3355 ERR_clear_error();
3356 }
3357# endif
3358#endif
3359 /*
3360 * Disable compression by default to prevent CRIME. Applications can
3361 * re-enable compression by configuring
3362 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3363 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3364 * middlebox compatibility by default. This may be disabled by default in
3365 * a later OpenSSL version.
3366 */
3367 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3368
3369 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3370
3371 /*
3372 * We cannot usefully set a default max_early_data here (which gets
3373 * propagated in SSL_new(), for the following reason: setting the
3374 * SSL field causes tls_construct_stoc_early_data() to tell the
3375 * client that early data will be accepted when constructing a TLS 1.3
3376 * session ticket, and the client will accordingly send us early data
3377 * when using that ticket (if the client has early data to send).
3378 * However, in order for the early data to actually be consumed by
3379 * the application, the application must also have calls to
3380 * SSL_read_early_data(); otherwise we'll just skip past the early data
3381 * and ignore it. So, since the application must add calls to
3382 * SSL_read_early_data(), we also require them to add
3383 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3384 * eliminating the bandwidth-wasting early data in the case described
3385 * above.
3386 */
3387 ret->max_early_data = 0;
3388
3389 /*
3390 * Default recv_max_early_data is a fully loaded single record. Could be
3391 * split across multiple records in practice. We set this differently to
3392 * max_early_data so that, in the default case, we do not advertise any
3393 * support for early_data, but if a client were to send us some (e.g.
3394 * because of an old, stale ticket) then we will tolerate it and skip over
3395 * it.
3396 */
3397 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3398
3399 /* By default we send two session tickets automatically in TLSv1.3 */
3400 ret->num_tickets = 2;
3401
3402 ssl_ctx_system_config(ret);
3403
3404 return ret;
3405 err:
3406 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3407 err2:
3408 SSL_CTX_free(ret);
3409 return NULL;
3410}
3411
3412SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3413{
3414 return SSL_CTX_new_ex(NULL, NULL, meth);
3415}
3416
3417int SSL_CTX_up_ref(SSL_CTX *ctx)
3418{
3419 int i;
3420
3421 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3422 return 0;
3423
3424 REF_PRINT_COUNT("SSL_CTX", ctx);
3425 REF_ASSERT_ISNT(i < 2);
3426 return ((i > 1) ? 1 : 0);
3427}
3428
3429void SSL_CTX_free(SSL_CTX *a)
3430{
3431 int i;
3432 size_t j;
3433
3434 if (a == NULL)
3435 return;
3436
3437 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3438 REF_PRINT_COUNT("SSL_CTX", a);
3439 if (i > 0)
3440 return;
3441 REF_ASSERT_ISNT(i < 0);
3442
3443 X509_VERIFY_PARAM_free(a->param);
3444 dane_ctx_final(&a->dane);
3445
3446 /*
3447 * Free internal session cache. However: the remove_cb() may reference
3448 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3449 * after the sessions were flushed.
3450 * As the ex_data handling routines might also touch the session cache,
3451 * the most secure solution seems to be: empty (flush) the cache, then
3452 * free ex_data, then finally free the cache.
3453 * (See ticket [openssl.org #212].)
3454 */
3455 if (a->sessions != NULL)
3456 SSL_CTX_flush_sessions(a, 0);
3457
3458 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3459 lh_SSL_SESSION_free(a->sessions);
3460 X509_STORE_free(a->cert_store);
3461#ifndef OPENSSL_NO_CT
3462 CTLOG_STORE_free(a->ctlog_store);
3463#endif
3464 sk_SSL_CIPHER_free(a->cipher_list);
3465 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3466 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3467 ssl_cert_free(a->cert);
3468 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3469 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3470 sk_X509_pop_free(a->extra_certs, X509_free);
3471 a->comp_methods = NULL;
3472#ifndef OPENSSL_NO_SRTP
3473 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3474#endif
3475#ifndef OPENSSL_NO_SRP
3476 ssl_ctx_srp_ctx_free_intern(a);
3477#endif
3478#ifndef OPENSSL_NO_ENGINE
3479 tls_engine_finish(a->client_cert_engine);
3480#endif
3481
3482 OPENSSL_free(a->ext.ecpointformats);
3483 OPENSSL_free(a->ext.supportedgroups);
3484 OPENSSL_free(a->ext.supported_groups_default);
3485 OPENSSL_free(a->ext.alpn);
3486 OPENSSL_secure_free(a->ext.secure);
3487
3488 ssl_evp_md_free(a->md5);
3489 ssl_evp_md_free(a->sha1);
3490
3491 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3492 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3493 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3494 ssl_evp_md_free(a->ssl_digest_methods[j]);
3495 for (j = 0; j < a->group_list_len; j++) {
3496 OPENSSL_free(a->group_list[j].tlsname);
3497 OPENSSL_free(a->group_list[j].realname);
3498 OPENSSL_free(a->group_list[j].algorithm);
3499 }
3500 OPENSSL_free(a->group_list);
3501
3502 OPENSSL_free(a->sigalg_lookup_cache);
3503
3504 CRYPTO_THREAD_lock_free(a->lock);
3505#ifdef TSAN_REQUIRES_LOCKING
3506 CRYPTO_THREAD_lock_free(a->tsan_lock);
3507#endif
3508
3509 OPENSSL_free(a->propq);
3510
3511 OPENSSL_free(a);
3512}
3513
3514void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3515{
3516 ctx->default_passwd_callback = cb;
3517}
3518
3519void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3520{
3521 ctx->default_passwd_callback_userdata = u;
3522}
3523
3524pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3525{
3526 return ctx->default_passwd_callback;
3527}
3528
3529void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3530{
3531 return ctx->default_passwd_callback_userdata;
3532}
3533
3534void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3535{
3536 s->default_passwd_callback = cb;
3537}
3538
3539void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3540{
3541 s->default_passwd_callback_userdata = u;
3542}
3543
3544pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3545{
3546 return s->default_passwd_callback;
3547}
3548
3549void *SSL_get_default_passwd_cb_userdata(SSL *s)
3550{
3551 return s->default_passwd_callback_userdata;
3552}
3553
3554void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3555 int (*cb) (X509_STORE_CTX *, void *),
3556 void *arg)
3557{
3558 ctx->app_verify_callback = cb;
3559 ctx->app_verify_arg = arg;
3560}
3561
3562void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3563 int (*cb) (int, X509_STORE_CTX *))
3564{
3565 ctx->verify_mode = mode;
3566 ctx->default_verify_callback = cb;
3567}
3568
3569void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3570{
3571 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3572}
3573
3574void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3575{
3576 ssl_cert_set_cert_cb(c->cert, cb, arg);
3577}
3578
3579void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3580{
3581 ssl_cert_set_cert_cb(s->cert, cb, arg);
3582}
3583
3584void ssl_set_masks(SSL *s)
3585{
3586 CERT *c = s->cert;
3587 uint32_t *pvalid = s->s3.tmp.valid_flags;
3588 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3589 unsigned long mask_k, mask_a;
3590 int have_ecc_cert, ecdsa_ok;
3591
3592 if (c == NULL)
3593 return;
3594
3595 dh_tmp = (c->dh_tmp != NULL
3596 || c->dh_tmp_cb != NULL
3597 || c->dh_tmp_auto);
3598
3599 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3600 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3601 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3602 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3603 mask_k = 0;
3604 mask_a = 0;
3605
3606 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3607 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3608
3609#ifndef OPENSSL_NO_GOST
3610 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3611 mask_k |= SSL_kGOST | SSL_kGOST18;
3612 mask_a |= SSL_aGOST12;
3613 }
3614 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3615 mask_k |= SSL_kGOST | SSL_kGOST18;
3616 mask_a |= SSL_aGOST12;
3617 }
3618 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3619 mask_k |= SSL_kGOST;
3620 mask_a |= SSL_aGOST01;
3621 }
3622#endif
3623
3624 if (rsa_enc)
3625 mask_k |= SSL_kRSA;
3626
3627 if (dh_tmp)
3628 mask_k |= SSL_kDHE;
3629
3630 /*
3631 * If we only have an RSA-PSS certificate allow RSA authentication
3632 * if TLS 1.2 and peer supports it.
3633 */
3634
3635 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3636 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3637 && TLS1_get_version(s) == TLS1_2_VERSION))
3638 mask_a |= SSL_aRSA;
3639
3640 if (dsa_sign) {
3641 mask_a |= SSL_aDSS;
3642 }
3643
3644 mask_a |= SSL_aNULL;
3645
3646 /*
3647 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3648 * depending on the key usage extension.
3649 */
3650 if (have_ecc_cert) {
3651 uint32_t ex_kusage;
3652 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3653 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3654 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3655 ecdsa_ok = 0;
3656 if (ecdsa_ok)
3657 mask_a |= SSL_aECDSA;
3658 }
3659 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3660 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3661 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3662 && TLS1_get_version(s) == TLS1_2_VERSION)
3663 mask_a |= SSL_aECDSA;
3664
3665 /* Allow Ed448 for TLS 1.2 if peer supports it */
3666 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3667 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3668 && TLS1_get_version(s) == TLS1_2_VERSION)
3669 mask_a |= SSL_aECDSA;
3670
3671 mask_k |= SSL_kECDHE;
3672
3673#ifndef OPENSSL_NO_PSK
3674 mask_k |= SSL_kPSK;
3675 mask_a |= SSL_aPSK;
3676 if (mask_k & SSL_kRSA)
3677 mask_k |= SSL_kRSAPSK;
3678 if (mask_k & SSL_kDHE)
3679 mask_k |= SSL_kDHEPSK;
3680 if (mask_k & SSL_kECDHE)
3681 mask_k |= SSL_kECDHEPSK;
3682#endif
3683
3684 s->s3.tmp.mask_k = mask_k;
3685 s->s3.tmp.mask_a = mask_a;
3686}
3687
3688int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3689{
3690 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3691 /* key usage, if present, must allow signing */
3692 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3693 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3694 return 0;
3695 }
3696 }
3697 return 1; /* all checks are ok */
3698}
3699
3700int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3701 size_t *serverinfo_length)
3702{
3703 CERT_PKEY *cpk = s->s3.tmp.cert;
3704 *serverinfo_length = 0;
3705
3706 if (cpk == NULL || cpk->serverinfo == NULL)
3707 return 0;
3708
3709 *serverinfo = cpk->serverinfo;
3710 *serverinfo_length = cpk->serverinfo_length;
3711 return 1;
3712}
3713
3714void ssl_update_cache(SSL *s, int mode)
3715{
3716 int i;
3717
3718 /*
3719 * If the session_id_length is 0, we are not supposed to cache it, and it
3720 * would be rather hard to do anyway :-)
3721 */
3722 if (s->session->session_id_length == 0)
3723 return;
3724
3725 /*
3726 * If sid_ctx_length is 0 there is no specific application context
3727 * associated with this session, so when we try to resume it and
3728 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3729 * indication that this is actually a session for the proper application
3730 * context, and the *handshake* will fail, not just the resumption attempt.
3731 * Do not cache (on the server) these sessions that are not resumable
3732 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3733 */
3734 if (s->server && s->session->sid_ctx_length == 0
3735 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3736 return;
3737
3738 i = s->session_ctx->session_cache_mode;
3739 if ((i & mode) != 0
3740 && (!s->hit || SSL_IS_TLS13(s))) {
3741 /*
3742 * Add the session to the internal cache. In server side TLSv1.3 we
3743 * normally don't do this because by default it's a full stateless ticket
3744 * with only a dummy session id so there is no reason to cache it,
3745 * unless:
3746 * - we are doing early_data, in which case we cache so that we can
3747 * detect replays
3748 * - the application has set a remove_session_cb so needs to know about
3749 * session timeout events
3750 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3751 */
3752 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3753 && (!SSL_IS_TLS13(s)
3754 || !s->server
3755 || (s->max_early_data > 0
3756 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3757 || s->session_ctx->remove_session_cb != NULL
3758 || (s->options & SSL_OP_NO_TICKET) != 0))
3759 SSL_CTX_add_session(s->session_ctx, s->session);
3760
3761 /*
3762 * Add the session to the external cache. We do this even in server side
3763 * TLSv1.3 without early data because some applications just want to
3764 * know about the creation of a session and aren't doing a full cache.
3765 */
3766 if (s->session_ctx->new_session_cb != NULL) {
3767 SSL_SESSION_up_ref(s->session);
3768 if (!s->session_ctx->new_session_cb(s, s->session))
3769 SSL_SESSION_free(s->session);
3770 }
3771 }
3772
3773 /* auto flush every 255 connections */
3774 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3775 TSAN_QUALIFIER int *stat;
3776
3777 if (mode & SSL_SESS_CACHE_CLIENT)
3778 stat = &s->session_ctx->stats.sess_connect_good;
3779 else
3780 stat = &s->session_ctx->stats.sess_accept_good;
3781 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
3782 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3783 }
3784}
3785
3786const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3787{
3788 return ctx->method;
3789}
3790
3791const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3792{
3793 return s->method;
3794}
3795
3796int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3797{
3798 int ret = 1;
3799
3800 if (s->method != meth) {
3801 const SSL_METHOD *sm = s->method;
3802 int (*hf) (SSL *) = s->handshake_func;
3803
3804 if (sm->version == meth->version)
3805 s->method = meth;
3806 else {
3807 sm->ssl_free(s);
3808 s->method = meth;
3809 ret = s->method->ssl_new(s);
3810 }
3811
3812 if (hf == sm->ssl_connect)
3813 s->handshake_func = meth->ssl_connect;
3814 else if (hf == sm->ssl_accept)
3815 s->handshake_func = meth->ssl_accept;
3816 }
3817 return ret;
3818}
3819
3820int SSL_get_error(const SSL *s, int i)
3821{
3822 int reason;
3823 unsigned long l;
3824 BIO *bio;
3825
3826 if (i > 0)
3827 return SSL_ERROR_NONE;
3828
3829 /*
3830 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3831 * where we do encode the error
3832 */
3833 if ((l = ERR_peek_error()) != 0) {
3834 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3835 return SSL_ERROR_SYSCALL;
3836 else
3837 return SSL_ERROR_SSL;
3838 }
3839
3840 if (SSL_want_read(s)) {
3841 bio = SSL_get_rbio(s);
3842 if (BIO_should_read(bio))
3843 return SSL_ERROR_WANT_READ;
3844 else if (BIO_should_write(bio))
3845 /*
3846 * This one doesn't make too much sense ... We never try to write
3847 * to the rbio, and an application program where rbio and wbio
3848 * are separate couldn't even know what it should wait for.
3849 * However if we ever set s->rwstate incorrectly (so that we have
3850 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3851 * wbio *are* the same, this test works around that bug; so it
3852 * might be safer to keep it.
3853 */
3854 return SSL_ERROR_WANT_WRITE;
3855 else if (BIO_should_io_special(bio)) {
3856 reason = BIO_get_retry_reason(bio);
3857 if (reason == BIO_RR_CONNECT)
3858 return SSL_ERROR_WANT_CONNECT;
3859 else if (reason == BIO_RR_ACCEPT)
3860 return SSL_ERROR_WANT_ACCEPT;
3861 else
3862 return SSL_ERROR_SYSCALL; /* unknown */
3863 }
3864 }
3865
3866 if (SSL_want_write(s)) {
3867 /* Access wbio directly - in order to use the buffered bio if present */
3868 bio = s->wbio;
3869 if (BIO_should_write(bio))
3870 return SSL_ERROR_WANT_WRITE;
3871 else if (BIO_should_read(bio))
3872 /*
3873 * See above (SSL_want_read(s) with BIO_should_write(bio))
3874 */
3875 return SSL_ERROR_WANT_READ;
3876 else if (BIO_should_io_special(bio)) {
3877 reason = BIO_get_retry_reason(bio);
3878 if (reason == BIO_RR_CONNECT)
3879 return SSL_ERROR_WANT_CONNECT;
3880 else if (reason == BIO_RR_ACCEPT)
3881 return SSL_ERROR_WANT_ACCEPT;
3882 else
3883 return SSL_ERROR_SYSCALL;
3884 }
3885 }
3886 if (SSL_want_x509_lookup(s))
3887 return SSL_ERROR_WANT_X509_LOOKUP;
3888 if (SSL_want_retry_verify(s))
3889 return SSL_ERROR_WANT_RETRY_VERIFY;
3890 if (SSL_want_async(s))
3891 return SSL_ERROR_WANT_ASYNC;
3892 if (SSL_want_async_job(s))
3893 return SSL_ERROR_WANT_ASYNC_JOB;
3894 if (SSL_want_client_hello_cb(s))
3895 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3896
3897 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3898 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3899 return SSL_ERROR_ZERO_RETURN;
3900
3901 return SSL_ERROR_SYSCALL;
3902}
3903
3904static int ssl_do_handshake_intern(void *vargs)
3905{
3906 struct ssl_async_args *args;
3907 SSL *s;
3908
3909 args = (struct ssl_async_args *)vargs;
3910 s = args->s;
3911
3912 return s->handshake_func(s);
3913}
3914
3915int SSL_do_handshake(SSL *s)
3916{
3917 int ret = 1;
3918
3919 if (s->handshake_func == NULL) {
3920 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
3921 return -1;
3922 }
3923
3924 ossl_statem_check_finish_init(s, -1);
3925
3926 s->method->ssl_renegotiate_check(s, 0);
3927
3928 if (SSL_in_init(s) || SSL_in_before(s)) {
3929 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3930 struct ssl_async_args args;
3931
3932 memset(&args, 0, sizeof(args));
3933 args.s = s;
3934
3935 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3936 } else {
3937 ret = s->handshake_func(s);
3938 }
3939 }
3940 return ret;
3941}
3942
3943void SSL_set_accept_state(SSL *s)
3944{
3945 s->server = 1;
3946 s->shutdown = 0;
3947 ossl_statem_clear(s);
3948 s->handshake_func = s->method->ssl_accept;
3949 clear_ciphers(s);
3950}
3951
3952void SSL_set_connect_state(SSL *s)
3953{
3954 s->server = 0;
3955 s->shutdown = 0;
3956 ossl_statem_clear(s);
3957 s->handshake_func = s->method->ssl_connect;
3958 clear_ciphers(s);
3959}
3960
3961int ssl_undefined_function(SSL *s)
3962{
3963 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3964 return 0;
3965}
3966
3967int ssl_undefined_void_function(void)
3968{
3969 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3970 return 0;
3971}
3972
3973int ssl_undefined_const_function(const SSL *s)
3974{
3975 return 0;
3976}
3977
3978const SSL_METHOD *ssl_bad_method(int ver)
3979{
3980 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3981 return NULL;
3982}
3983
3984const char *ssl_protocol_to_string(int version)
3985{
3986 switch(version)
3987 {
3988 case TLS1_3_VERSION:
3989 return "TLSv1.3";
3990
3991 case TLS1_2_VERSION:
3992 return "TLSv1.2";
3993
3994 case TLS1_1_VERSION:
3995 return "TLSv1.1";
3996
3997 case TLS1_VERSION:
3998 return "TLSv1";
3999
4000 case SSL3_VERSION:
4001 return "SSLv3";
4002
4003 case DTLS1_BAD_VER:
4004 return "DTLSv0.9";
4005
4006 case DTLS1_VERSION:
4007 return "DTLSv1";
4008
4009 case DTLS1_2_VERSION:
4010 return "DTLSv1.2";
4011
4012 default:
4013 return "unknown";
4014 }
4015}
4016
4017const char *SSL_get_version(const SSL *s)
4018{
4019 return ssl_protocol_to_string(s->version);
4020}
4021
4022static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4023{
4024 STACK_OF(X509_NAME) *sk;
4025 X509_NAME *xn;
4026 int i;
4027
4028 if (src == NULL) {
4029 *dst = NULL;
4030 return 1;
4031 }
4032
4033 if ((sk = sk_X509_NAME_new_null()) == NULL)
4034 return 0;
4035 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4036 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4037 if (xn == NULL) {
4038 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4039 return 0;
4040 }
4041 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4042 X509_NAME_free(xn);
4043 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4044 return 0;
4045 }
4046 }
4047 *dst = sk;
4048
4049 return 1;
4050}
4051
4052SSL *SSL_dup(SSL *s)
4053{
4054 SSL *ret;
4055 int i;
4056
4057 /* If we're not quiescent, just up_ref! */
4058 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4059 CRYPTO_UP_REF(&s->references, &i, s->lock);
4060 return s;
4061 }
4062
4063 /*
4064 * Otherwise, copy configuration state, and session if set.
4065 */
4066 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4067 return NULL;
4068
4069 if (s->session != NULL) {
4070 /*
4071 * Arranges to share the same session via up_ref. This "copies"
4072 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4073 */
4074 if (!SSL_copy_session_id(ret, s))
4075 goto err;
4076 } else {
4077 /*
4078 * No session has been established yet, so we have to expect that
4079 * s->cert or ret->cert will be changed later -- they should not both
4080 * point to the same object, and thus we can't use
4081 * SSL_copy_session_id.
4082 */
4083 if (!SSL_set_ssl_method(ret, s->method))
4084 goto err;
4085
4086 if (s->cert != NULL) {
4087 ssl_cert_free(ret->cert);
4088 ret->cert = ssl_cert_dup(s->cert);
4089 if (ret->cert == NULL)
4090 goto err;
4091 }
4092
4093 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4094 (int)s->sid_ctx_length))
4095 goto err;
4096 }
4097
4098 if (!ssl_dane_dup(ret, s))
4099 goto err;
4100 ret->version = s->version;
4101 ret->options = s->options;
4102 ret->min_proto_version = s->min_proto_version;
4103 ret->max_proto_version = s->max_proto_version;
4104 ret->mode = s->mode;
4105 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4106 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4107 ret->msg_callback = s->msg_callback;
4108 ret->msg_callback_arg = s->msg_callback_arg;
4109 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4110 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4111 ret->generate_session_id = s->generate_session_id;
4112
4113 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4114
4115 /* copy app data, a little dangerous perhaps */
4116 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4117 goto err;
4118
4119 ret->server = s->server;
4120 if (s->handshake_func) {
4121 if (s->server)
4122 SSL_set_accept_state(ret);
4123 else
4124 SSL_set_connect_state(ret);
4125 }
4126 ret->shutdown = s->shutdown;
4127 ret->hit = s->hit;
4128
4129 ret->default_passwd_callback = s->default_passwd_callback;
4130 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4131
4132 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4133
4134 /* dup the cipher_list and cipher_list_by_id stacks */
4135 if (s->cipher_list != NULL) {
4136 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4137 goto err;
4138 }
4139 if (s->cipher_list_by_id != NULL)
4140 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4141 == NULL)
4142 goto err;
4143
4144 /* Dup the client_CA list */
4145 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4146 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4147 goto err;
4148
4149 return ret;
4150
4151 err:
4152 SSL_free(ret);
4153 return NULL;
4154}
4155
4156void ssl_clear_cipher_ctx(SSL *s)
4157{
4158 if (s->enc_read_ctx != NULL) {
4159 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4160 s->enc_read_ctx = NULL;
4161 }
4162 if (s->enc_write_ctx != NULL) {
4163 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4164 s->enc_write_ctx = NULL;
4165 }
4166#ifndef OPENSSL_NO_COMP
4167 COMP_CTX_free(s->expand);
4168 s->expand = NULL;
4169 COMP_CTX_free(s->compress);
4170 s->compress = NULL;
4171#endif
4172}
4173
4174X509 *SSL_get_certificate(const SSL *s)
4175{
4176 if (s->cert != NULL)
4177 return s->cert->key->x509;
4178 else
4179 return NULL;
4180}
4181
4182EVP_PKEY *SSL_get_privatekey(const SSL *s)
4183{
4184 if (s->cert != NULL)
4185 return s->cert->key->privatekey;
4186 else
4187 return NULL;
4188}
4189
4190X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4191{
4192 if (ctx->cert != NULL)
4193 return ctx->cert->key->x509;
4194 else
4195 return NULL;
4196}
4197
4198EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4199{
4200 if (ctx->cert != NULL)
4201 return ctx->cert->key->privatekey;
4202 else
4203 return NULL;
4204}
4205
4206const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4207{
4208 if ((s->session != NULL) && (s->session->cipher != NULL))
4209 return s->session->cipher;
4210 return NULL;
4211}
4212
4213const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4214{
4215 return s->s3.tmp.new_cipher;
4216}
4217
4218const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4219{
4220#ifndef OPENSSL_NO_COMP
4221 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4222#else
4223 return NULL;
4224#endif
4225}
4226
4227const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4228{
4229#ifndef OPENSSL_NO_COMP
4230 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4231#else
4232 return NULL;
4233#endif
4234}
4235
4236int ssl_init_wbio_buffer(SSL *s)
4237{
4238 BIO *bbio;
4239
4240 if (s->bbio != NULL) {
4241 /* Already buffered. */
4242 return 1;
4243 }
4244
4245 bbio = BIO_new(BIO_f_buffer());
4246 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4247 BIO_free(bbio);
4248 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4249 return 0;
4250 }
4251 s->bbio = bbio;
4252 s->wbio = BIO_push(bbio, s->wbio);
4253
4254 return 1;
4255}
4256
4257int ssl_free_wbio_buffer(SSL *s)
4258{
4259 /* callers ensure s is never null */
4260 if (s->bbio == NULL)
4261 return 1;
4262
4263 s->wbio = BIO_pop(s->wbio);
4264 BIO_free(s->bbio);
4265 s->bbio = NULL;
4266
4267 return 1;
4268}
4269
4270void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4271{
4272 ctx->quiet_shutdown = mode;
4273}
4274
4275int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4276{
4277 return ctx->quiet_shutdown;
4278}
4279
4280void SSL_set_quiet_shutdown(SSL *s, int mode)
4281{
4282 s->quiet_shutdown = mode;
4283}
4284
4285int SSL_get_quiet_shutdown(const SSL *s)
4286{
4287 return s->quiet_shutdown;
4288}
4289
4290void SSL_set_shutdown(SSL *s, int mode)
4291{
4292 s->shutdown = mode;
4293}
4294
4295int SSL_get_shutdown(const SSL *s)
4296{
4297 return s->shutdown;
4298}
4299
4300int SSL_version(const SSL *s)
4301{
4302 return s->version;
4303}
4304
4305int SSL_client_version(const SSL *s)
4306{
4307 return s->client_version;
4308}
4309
4310SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4311{
4312 return ssl->ctx;
4313}
4314
4315SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4316{
4317 CERT *new_cert;
4318 if (ssl->ctx == ctx)
4319 return ssl->ctx;
4320 if (ctx == NULL)
4321 ctx = ssl->session_ctx;
4322 new_cert = ssl_cert_dup(ctx->cert);
4323 if (new_cert == NULL) {
4324 return NULL;
4325 }
4326
4327 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4328 ssl_cert_free(new_cert);
4329 return NULL;
4330 }
4331
4332 ssl_cert_free(ssl->cert);
4333 ssl->cert = new_cert;
4334
4335 /*
4336 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4337 * so setter APIs must prevent invalid lengths from entering the system.
4338 */
4339 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4340 return NULL;
4341
4342 /*
4343 * If the session ID context matches that of the parent SSL_CTX,
4344 * inherit it from the new SSL_CTX as well. If however the context does
4345 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4346 * leave it unchanged.
4347 */
4348 if ((ssl->ctx != NULL) &&
4349 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4350 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4351 ssl->sid_ctx_length = ctx->sid_ctx_length;
4352 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4353 }
4354
4355 SSL_CTX_up_ref(ctx);
4356 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4357 ssl->ctx = ctx;
4358
4359 return ssl->ctx;
4360}
4361
4362int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4363{
4364 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4365 ctx->propq);
4366}
4367
4368int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4369{
4370 X509_LOOKUP *lookup;
4371
4372 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4373 if (lookup == NULL)
4374 return 0;
4375
4376 /* We ignore errors, in case the directory doesn't exist */
4377 ERR_set_mark();
4378
4379 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4380
4381 ERR_pop_to_mark();
4382
4383 return 1;
4384}
4385
4386int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4387{
4388 X509_LOOKUP *lookup;
4389
4390 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4391 if (lookup == NULL)
4392 return 0;
4393
4394 /* We ignore errors, in case the file doesn't exist */
4395 ERR_set_mark();
4396
4397 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4398 ctx->propq);
4399
4400 ERR_pop_to_mark();
4401
4402 return 1;
4403}
4404
4405int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4406{
4407 X509_LOOKUP *lookup;
4408
4409 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4410 if (lookup == NULL)
4411 return 0;
4412
4413 /* We ignore errors, in case the directory doesn't exist */
4414 ERR_set_mark();
4415
4416 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4417
4418 ERR_pop_to_mark();
4419
4420 return 1;
4421}
4422
4423int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4424{
4425 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4426 ctx->propq);
4427}
4428
4429int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4430{
4431 return X509_STORE_load_path(ctx->cert_store, CApath);
4432}
4433
4434int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4435{
4436 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
4437 ctx->propq);
4438}
4439
4440int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4441 const char *CApath)
4442{
4443 if (CAfile == NULL && CApath == NULL)
4444 return 0;
4445 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4446 return 0;
4447 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4448 return 0;
4449 return 1;
4450}
4451
4452void SSL_set_info_callback(SSL *ssl,
4453 void (*cb) (const SSL *ssl, int type, int val))
4454{
4455 ssl->info_callback = cb;
4456}
4457
4458/*
4459 * One compiler (Diab DCC) doesn't like argument names in returned function
4460 * pointer.
4461 */
4462void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4463 int /* type */ ,
4464 int /* val */ ) {
4465 return ssl->info_callback;
4466}
4467
4468void SSL_set_verify_result(SSL *ssl, long arg)
4469{
4470 ssl->verify_result = arg;
4471}
4472
4473long SSL_get_verify_result(const SSL *ssl)
4474{
4475 return ssl->verify_result;
4476}
4477
4478size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4479{
4480 if (outlen == 0)
4481 return sizeof(ssl->s3.client_random);
4482 if (outlen > sizeof(ssl->s3.client_random))
4483 outlen = sizeof(ssl->s3.client_random);
4484 memcpy(out, ssl->s3.client_random, outlen);
4485 return outlen;
4486}
4487
4488size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4489{
4490 if (outlen == 0)
4491 return sizeof(ssl->s3.server_random);
4492 if (outlen > sizeof(ssl->s3.server_random))
4493 outlen = sizeof(ssl->s3.server_random);
4494 memcpy(out, ssl->s3.server_random, outlen);
4495 return outlen;
4496}
4497
4498size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4499 unsigned char *out, size_t outlen)
4500{
4501 if (outlen == 0)
4502 return session->master_key_length;
4503 if (outlen > session->master_key_length)
4504 outlen = session->master_key_length;
4505 memcpy(out, session->master_key, outlen);
4506 return outlen;
4507}
4508
4509int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4510 size_t len)
4511{
4512 if (len > sizeof(sess->master_key))
4513 return 0;
4514
4515 memcpy(sess->master_key, in, len);
4516 sess->master_key_length = len;
4517 return 1;
4518}
4519
4520
4521int SSL_set_ex_data(SSL *s, int idx, void *arg)
4522{
4523 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4524}
4525
4526void *SSL_get_ex_data(const SSL *s, int idx)
4527{
4528 return CRYPTO_get_ex_data(&s->ex_data, idx);
4529}
4530
4531int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4532{
4533 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4534}
4535
4536void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4537{
4538 return CRYPTO_get_ex_data(&s->ex_data, idx);
4539}
4540
4541X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4542{
4543 return ctx->cert_store;
4544}
4545
4546void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4547{
4548 X509_STORE_free(ctx->cert_store);
4549 ctx->cert_store = store;
4550}
4551
4552void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4553{
4554 if (store != NULL)
4555 X509_STORE_up_ref(store);
4556 SSL_CTX_set_cert_store(ctx, store);
4557}
4558
4559int SSL_want(const SSL *s)
4560{
4561 return s->rwstate;
4562}
4563
4564#ifndef OPENSSL_NO_PSK
4565int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4566{
4567 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4568 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
4569 return 0;
4570 }
4571 OPENSSL_free(ctx->cert->psk_identity_hint);
4572 if (identity_hint != NULL) {
4573 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4574 if (ctx->cert->psk_identity_hint == NULL)
4575 return 0;
4576 } else
4577 ctx->cert->psk_identity_hint = NULL;
4578 return 1;
4579}
4580
4581int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4582{
4583 if (s == NULL)
4584 return 0;
4585
4586 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4587 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
4588 return 0;
4589 }
4590 OPENSSL_free(s->cert->psk_identity_hint);
4591 if (identity_hint != NULL) {
4592 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4593 if (s->cert->psk_identity_hint == NULL)
4594 return 0;
4595 } else
4596 s->cert->psk_identity_hint = NULL;
4597 return 1;
4598}
4599
4600const char *SSL_get_psk_identity_hint(const SSL *s)
4601{
4602 if (s == NULL || s->session == NULL)
4603 return NULL;
4604 return s->session->psk_identity_hint;
4605}
4606
4607const char *SSL_get_psk_identity(const SSL *s)
4608{
4609 if (s == NULL || s->session == NULL)
4610 return NULL;
4611 return s->session->psk_identity;
4612}
4613
4614void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4615{
4616 s->psk_client_callback = cb;
4617}
4618
4619void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4620{
4621 ctx->psk_client_callback = cb;
4622}
4623
4624void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4625{
4626 s->psk_server_callback = cb;
4627}
4628
4629void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4630{
4631 ctx->psk_server_callback = cb;
4632}
4633#endif
4634
4635void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4636{
4637 s->psk_find_session_cb = cb;
4638}
4639
4640void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4641 SSL_psk_find_session_cb_func cb)
4642{
4643 ctx->psk_find_session_cb = cb;
4644}
4645
4646void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4647{
4648 s->psk_use_session_cb = cb;
4649}
4650
4651void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4652 SSL_psk_use_session_cb_func cb)
4653{
4654 ctx->psk_use_session_cb = cb;
4655}
4656
4657void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4658 void (*cb) (int write_p, int version,
4659 int content_type, const void *buf,
4660 size_t len, SSL *ssl, void *arg))
4661{
4662 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4663}
4664
4665void SSL_set_msg_callback(SSL *ssl,
4666 void (*cb) (int write_p, int version,
4667 int content_type, const void *buf,
4668 size_t len, SSL *ssl, void *arg))
4669{
4670 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4671}
4672
4673void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4674 int (*cb) (SSL *ssl,
4675 int
4676 is_forward_secure))
4677{
4678 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4679 (void (*)(void))cb);
4680}
4681
4682void SSL_set_not_resumable_session_callback(SSL *ssl,
4683 int (*cb) (SSL *ssl,
4684 int is_forward_secure))
4685{
4686 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4687 (void (*)(void))cb);
4688}
4689
4690void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4691 size_t (*cb) (SSL *ssl, int type,
4692 size_t len, void *arg))
4693{
4694 ctx->record_padding_cb = cb;
4695}
4696
4697void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4698{
4699 ctx->record_padding_arg = arg;
4700}
4701
4702void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4703{
4704 return ctx->record_padding_arg;
4705}
4706
4707int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4708{
4709 /* block size of 0 or 1 is basically no padding */
4710 if (block_size == 1)
4711 ctx->block_padding = 0;
4712 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4713 ctx->block_padding = block_size;
4714 else
4715 return 0;
4716 return 1;
4717}
4718
4719int SSL_set_record_padding_callback(SSL *ssl,
4720 size_t (*cb) (SSL *ssl, int type,
4721 size_t len, void *arg))
4722{
4723 BIO *b;
4724
4725 b = SSL_get_wbio(ssl);
4726 if (b == NULL || !BIO_get_ktls_send(b)) {
4727 ssl->record_padding_cb = cb;
4728 return 1;
4729 }
4730 return 0;
4731}
4732
4733void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4734{
4735 ssl->record_padding_arg = arg;
4736}
4737
4738void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4739{
4740 return ssl->record_padding_arg;
4741}
4742
4743int SSL_set_block_padding(SSL *ssl, size_t block_size)
4744{
4745 /* block size of 0 or 1 is basically no padding */
4746 if (block_size == 1)
4747 ssl->block_padding = 0;
4748 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4749 ssl->block_padding = block_size;
4750 else
4751 return 0;
4752 return 1;
4753}
4754
4755int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4756{
4757 s->num_tickets = num_tickets;
4758
4759 return 1;
4760}
4761
4762size_t SSL_get_num_tickets(const SSL *s)
4763{
4764 return s->num_tickets;
4765}
4766
4767int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4768{
4769 ctx->num_tickets = num_tickets;
4770
4771 return 1;
4772}
4773
4774size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4775{
4776 return ctx->num_tickets;
4777}
4778
4779/*
4780 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4781 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4782 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4783 * Returns the newly allocated ctx;
4784 */
4785
4786EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4787{
4788 ssl_clear_hash_ctx(hash);
4789 *hash = EVP_MD_CTX_new();
4790 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4791 EVP_MD_CTX_free(*hash);
4792 *hash = NULL;
4793 return NULL;
4794 }
4795 return *hash;
4796}
4797
4798void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4799{
4800
4801 EVP_MD_CTX_free(*hash);
4802 *hash = NULL;
4803}
4804
4805/* Retrieve handshake hashes */
4806int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4807 size_t *hashlen)
4808{
4809 EVP_MD_CTX *ctx = NULL;
4810 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4811 int hashleni = EVP_MD_CTX_get_size(hdgst);
4812 int ret = 0;
4813
4814 if (hashleni < 0 || (size_t)hashleni > outlen) {
4815 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4816 goto err;
4817 }
4818
4819 ctx = EVP_MD_CTX_new();
4820 if (ctx == NULL) {
4821 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4822 goto err;
4823 }
4824
4825 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4826 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4827 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4828 goto err;
4829 }
4830
4831 *hashlen = hashleni;
4832
4833 ret = 1;
4834 err:
4835 EVP_MD_CTX_free(ctx);
4836 return ret;
4837}
4838
4839int SSL_session_reused(const SSL *s)
4840{
4841 return s->hit;
4842}
4843
4844int SSL_is_server(const SSL *s)
4845{
4846 return s->server;
4847}
4848
4849#ifndef OPENSSL_NO_DEPRECATED_1_1_0
4850void SSL_set_debug(SSL *s, int debug)
4851{
4852 /* Old function was do-nothing anyway... */
4853 (void)s;
4854 (void)debug;
4855}
4856#endif
4857
4858void SSL_set_security_level(SSL *s, int level)
4859{
4860 s->cert->sec_level = level;
4861}
4862
4863int SSL_get_security_level(const SSL *s)
4864{
4865 return s->cert->sec_level;
4866}
4867
4868void SSL_set_security_callback(SSL *s,
4869 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4870 int op, int bits, int nid,
4871 void *other, void *ex))
4872{
4873 s->cert->sec_cb = cb;
4874}
4875
4876int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4877 const SSL_CTX *ctx, int op,
4878 int bits, int nid, void *other,
4879 void *ex) {
4880 return s->cert->sec_cb;
4881}
4882
4883void SSL_set0_security_ex_data(SSL *s, void *ex)
4884{
4885 s->cert->sec_ex = ex;
4886}
4887
4888void *SSL_get0_security_ex_data(const SSL *s)
4889{
4890 return s->cert->sec_ex;
4891}
4892
4893void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4894{
4895 ctx->cert->sec_level = level;
4896}
4897
4898int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4899{
4900 return ctx->cert->sec_level;
4901}
4902
4903void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4904 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4905 int op, int bits, int nid,
4906 void *other, void *ex))
4907{
4908 ctx->cert->sec_cb = cb;
4909}
4910
4911int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4912 const SSL_CTX *ctx,
4913 int op, int bits,
4914 int nid,
4915 void *other,
4916 void *ex) {
4917 return ctx->cert->sec_cb;
4918}
4919
4920void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4921{
4922 ctx->cert->sec_ex = ex;
4923}
4924
4925void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4926{
4927 return ctx->cert->sec_ex;
4928}
4929
4930uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
4931{
4932 return ctx->options;
4933}
4934
4935uint64_t SSL_get_options(const SSL *s)
4936{
4937 return s->options;
4938}
4939
4940uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
4941{
4942 return ctx->options |= op;
4943}
4944
4945uint64_t SSL_set_options(SSL *s, uint64_t op)
4946{
4947 return s->options |= op;
4948}
4949
4950uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
4951{
4952 return ctx->options &= ~op;
4953}
4954
4955uint64_t SSL_clear_options(SSL *s, uint64_t op)
4956{
4957 return s->options &= ~op;
4958}
4959
4960STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4961{
4962 return s->verified_chain;
4963}
4964
4965IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4966
4967#ifndef OPENSSL_NO_CT
4968
4969/*
4970 * Moves SCTs from the |src| stack to the |dst| stack.
4971 * The source of each SCT will be set to |origin|.
4972 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4973 * the caller.
4974 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4975 */
4976static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4977 sct_source_t origin)
4978{
4979 int scts_moved = 0;
4980 SCT *sct = NULL;
4981
4982 if (*dst == NULL) {
4983 *dst = sk_SCT_new_null();
4984 if (*dst == NULL) {
4985 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
4986 goto err;
4987 }
4988 }
4989
4990 while ((sct = sk_SCT_pop(src)) != NULL) {
4991 if (SCT_set_source(sct, origin) != 1)
4992 goto err;
4993
4994 if (sk_SCT_push(*dst, sct) <= 0)
4995 goto err;
4996 scts_moved += 1;
4997 }
4998
4999 return scts_moved;
5000 err:
5001 if (sct != NULL)
5002 sk_SCT_push(src, sct); /* Put the SCT back */
5003 return -1;
5004}
5005
5006/*
5007 * Look for data collected during ServerHello and parse if found.
5008 * Returns the number of SCTs extracted.
5009 */
5010static int ct_extract_tls_extension_scts(SSL *s)
5011{
5012 int scts_extracted = 0;
5013
5014 if (s->ext.scts != NULL) {
5015 const unsigned char *p = s->ext.scts;
5016 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5017
5018 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5019
5020 SCT_LIST_free(scts);
5021 }
5022
5023 return scts_extracted;
5024}
5025
5026/*
5027 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5028 * contains an SCT X509 extension. They will be stored in |s->scts|.
5029 * Returns:
5030 * - The number of SCTs extracted, assuming an OCSP response exists.
5031 * - 0 if no OCSP response exists or it contains no SCTs.
5032 * - A negative integer if an error occurs.
5033 */
5034static int ct_extract_ocsp_response_scts(SSL *s)
5035{
5036# ifndef OPENSSL_NO_OCSP
5037 int scts_extracted = 0;
5038 const unsigned char *p;
5039 OCSP_BASICRESP *br = NULL;
5040 OCSP_RESPONSE *rsp = NULL;
5041 STACK_OF(SCT) *scts = NULL;
5042 int i;
5043
5044 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5045 goto err;
5046
5047 p = s->ext.ocsp.resp;
5048 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5049 if (rsp == NULL)
5050 goto err;
5051
5052 br = OCSP_response_get1_basic(rsp);
5053 if (br == NULL)
5054 goto err;
5055
5056 for (i = 0; i < OCSP_resp_count(br); ++i) {
5057 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5058
5059 if (single == NULL)
5060 continue;
5061
5062 scts =
5063 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5064 scts_extracted =
5065 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5066 if (scts_extracted < 0)
5067 goto err;
5068 }
5069 err:
5070 SCT_LIST_free(scts);
5071 OCSP_BASICRESP_free(br);
5072 OCSP_RESPONSE_free(rsp);
5073 return scts_extracted;
5074# else
5075 /* Behave as if no OCSP response exists */
5076 return 0;
5077# endif
5078}
5079
5080/*
5081 * Attempts to extract SCTs from the peer certificate.
5082 * Return the number of SCTs extracted, or a negative integer if an error
5083 * occurs.
5084 */
5085static int ct_extract_x509v3_extension_scts(SSL *s)
5086{
5087 int scts_extracted = 0;
5088 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5089
5090 if (cert != NULL) {
5091 STACK_OF(SCT) *scts =
5092 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5093
5094 scts_extracted =
5095 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5096
5097 SCT_LIST_free(scts);
5098 }
5099
5100 return scts_extracted;
5101}
5102
5103/*
5104 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5105 * response (if it exists) and X509v3 extensions in the certificate.
5106 * Returns NULL if an error occurs.
5107 */
5108const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5109{
5110 if (!s->scts_parsed) {
5111 if (ct_extract_tls_extension_scts(s) < 0 ||
5112 ct_extract_ocsp_response_scts(s) < 0 ||
5113 ct_extract_x509v3_extension_scts(s) < 0)
5114 goto err;
5115
5116 s->scts_parsed = 1;
5117 }
5118 return s->scts;
5119 err:
5120 return NULL;
5121}
5122
5123static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5124 const STACK_OF(SCT) *scts, void *unused_arg)
5125{
5126 return 1;
5127}
5128
5129static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5130 const STACK_OF(SCT) *scts, void *unused_arg)
5131{
5132 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5133 int i;
5134
5135 for (i = 0; i < count; ++i) {
5136 SCT *sct = sk_SCT_value(scts, i);
5137 int status = SCT_get_validation_status(sct);
5138
5139 if (status == SCT_VALIDATION_STATUS_VALID)
5140 return 1;
5141 }
5142 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5143 return 0;
5144}
5145
5146int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5147 void *arg)
5148{
5149 /*
5150 * Since code exists that uses the custom extension handler for CT, look
5151 * for this and throw an error if they have already registered to use CT.
5152 */
5153 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5154 TLSEXT_TYPE_signed_certificate_timestamp))
5155 {
5156 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5157 return 0;
5158 }
5159
5160 if (callback != NULL) {
5161 /*
5162 * If we are validating CT, then we MUST accept SCTs served via OCSP
5163 */
5164 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5165 return 0;
5166 }
5167
5168 s->ct_validation_callback = callback;
5169 s->ct_validation_callback_arg = arg;
5170
5171 return 1;
5172}
5173
5174int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5175 ssl_ct_validation_cb callback, void *arg)
5176{
5177 /*
5178 * Since code exists that uses the custom extension handler for CT, look for
5179 * this and throw an error if they have already registered to use CT.
5180 */
5181 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5182 TLSEXT_TYPE_signed_certificate_timestamp))
5183 {
5184 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5185 return 0;
5186 }
5187
5188 ctx->ct_validation_callback = callback;
5189 ctx->ct_validation_callback_arg = arg;
5190 return 1;
5191}
5192
5193int SSL_ct_is_enabled(const SSL *s)
5194{
5195 return s->ct_validation_callback != NULL;
5196}
5197
5198int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5199{
5200 return ctx->ct_validation_callback != NULL;
5201}
5202
5203int ssl_validate_ct(SSL *s)
5204{
5205 int ret = 0;
5206 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5207 X509 *issuer;
5208 SSL_DANE *dane = &s->dane;
5209 CT_POLICY_EVAL_CTX *ctx = NULL;
5210 const STACK_OF(SCT) *scts;
5211
5212 /*
5213 * If no callback is set, the peer is anonymous, or its chain is invalid,
5214 * skip SCT validation - just return success. Applications that continue
5215 * handshakes without certificates, with unverified chains, or pinned leaf
5216 * certificates are outside the scope of the WebPKI and CT.
5217 *
5218 * The above exclusions notwithstanding the vast majority of peers will
5219 * have rather ordinary certificate chains validated by typical
5220 * applications that perform certificate verification and therefore will
5221 * process SCTs when enabled.
5222 */
5223 if (s->ct_validation_callback == NULL || cert == NULL ||
5224 s->verify_result != X509_V_OK ||
5225 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5226 return 1;
5227
5228 /*
5229 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5230 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5231 */
5232 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5233 switch (dane->mtlsa->usage) {
5234 case DANETLS_USAGE_DANE_TA:
5235 case DANETLS_USAGE_DANE_EE:
5236 return 1;
5237 }
5238 }
5239
5240 ctx = CT_POLICY_EVAL_CTX_new_ex(s->ctx->libctx, s->ctx->propq);
5241 if (ctx == NULL) {
5242 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5243 goto end;
5244 }
5245
5246 issuer = sk_X509_value(s->verified_chain, 1);
5247 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5248 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5249 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5250 CT_POLICY_EVAL_CTX_set_time(
5251 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5252
5253 scts = SSL_get0_peer_scts(s);
5254
5255 /*
5256 * This function returns success (> 0) only when all the SCTs are valid, 0
5257 * when some are invalid, and < 0 on various internal errors (out of
5258 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5259 * reason to abort the handshake, that decision is up to the callback.
5260 * Therefore, we error out only in the unexpected case that the return
5261 * value is negative.
5262 *
5263 * XXX: One might well argue that the return value of this function is an
5264 * unfortunate design choice. Its job is only to determine the validation
5265 * status of each of the provided SCTs. So long as it correctly separates
5266 * the wheat from the chaff it should return success. Failure in this case
5267 * ought to correspond to an inability to carry out its duties.
5268 */
5269 if (SCT_LIST_validate(scts, ctx) < 0) {
5270 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
5271 goto end;
5272 }
5273
5274 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5275 if (ret < 0)
5276 ret = 0; /* This function returns 0 on failure */
5277 if (!ret)
5278 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
5279
5280 end:
5281 CT_POLICY_EVAL_CTX_free(ctx);
5282 /*
5283 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5284 * failure return code here. Also the application may wish the complete
5285 * the handshake, and then disconnect cleanly at a higher layer, after
5286 * checking the verification status of the completed connection.
5287 *
5288 * We therefore force a certificate verification failure which will be
5289 * visible via SSL_get_verify_result() and cached as part of any resumed
5290 * session.
5291 *
5292 * Note: the permissive callback is for information gathering only, always
5293 * returns success, and does not affect verification status. Only the
5294 * strict callback or a custom application-specified callback can trigger
5295 * connection failure or record a verification error.
5296 */
5297 if (ret <= 0)
5298 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5299 return ret;
5300}
5301
5302int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5303{
5304 switch (validation_mode) {
5305 default:
5306 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
5307 return 0;
5308 case SSL_CT_VALIDATION_PERMISSIVE:
5309 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5310 case SSL_CT_VALIDATION_STRICT:
5311 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5312 }
5313}
5314
5315int SSL_enable_ct(SSL *s, int validation_mode)
5316{
5317 switch (validation_mode) {
5318 default:
5319 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
5320 return 0;
5321 case SSL_CT_VALIDATION_PERMISSIVE:
5322 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5323 case SSL_CT_VALIDATION_STRICT:
5324 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5325 }
5326}
5327
5328int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5329{
5330 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5331}
5332
5333int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5334{
5335 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5336}
5337
5338void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5339{
5340 CTLOG_STORE_free(ctx->ctlog_store);
5341 ctx->ctlog_store = logs;
5342}
5343
5344const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5345{
5346 return ctx->ctlog_store;
5347}
5348
5349#endif /* OPENSSL_NO_CT */
5350
5351void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5352 void *arg)
5353{
5354 c->client_hello_cb = cb;
5355 c->client_hello_cb_arg = arg;
5356}
5357
5358int SSL_client_hello_isv2(SSL *s)
5359{
5360 if (s->clienthello == NULL)
5361 return 0;
5362 return s->clienthello->isv2;
5363}
5364
5365unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5366{
5367 if (s->clienthello == NULL)
5368 return 0;
5369 return s->clienthello->legacy_version;
5370}
5371
5372size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5373{
5374 if (s->clienthello == NULL)
5375 return 0;
5376 if (out != NULL)
5377 *out = s->clienthello->random;
5378 return SSL3_RANDOM_SIZE;
5379}
5380
5381size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5382{
5383 if (s->clienthello == NULL)
5384 return 0;
5385 if (out != NULL)
5386 *out = s->clienthello->session_id;
5387 return s->clienthello->session_id_len;
5388}
5389
5390size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5391{
5392 if (s->clienthello == NULL)
5393 return 0;
5394 if (out != NULL)
5395 *out = PACKET_data(&s->clienthello->ciphersuites);
5396 return PACKET_remaining(&s->clienthello->ciphersuites);
5397}
5398
5399size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5400{
5401 if (s->clienthello == NULL)
5402 return 0;
5403 if (out != NULL)
5404 *out = s->clienthello->compressions;
5405 return s->clienthello->compressions_len;
5406}
5407
5408int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5409{
5410 RAW_EXTENSION *ext;
5411 int *present;
5412 size_t num = 0, i;
5413
5414 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5415 return 0;
5416 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5417 ext = s->clienthello->pre_proc_exts + i;
5418 if (ext->present)
5419 num++;
5420 }
5421 if (num == 0) {
5422 *out = NULL;
5423 *outlen = 0;
5424 return 1;
5425 }
5426 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5427 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5428 return 0;
5429 }
5430 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5431 ext = s->clienthello->pre_proc_exts + i;
5432 if (ext->present) {
5433 if (ext->received_order >= num)
5434 goto err;
5435 present[ext->received_order] = ext->type;
5436 }
5437 }
5438 *out = present;
5439 *outlen = num;
5440 return 1;
5441 err:
5442 OPENSSL_free(present);
5443 return 0;
5444}
5445
5446int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5447 size_t *outlen)
5448{
5449 size_t i;
5450 RAW_EXTENSION *r;
5451
5452 if (s->clienthello == NULL)
5453 return 0;
5454 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5455 r = s->clienthello->pre_proc_exts + i;
5456 if (r->present && r->type == type) {
5457 if (out != NULL)
5458 *out = PACKET_data(&r->data);
5459 if (outlen != NULL)
5460 *outlen = PACKET_remaining(&r->data);
5461 return 1;
5462 }
5463 }
5464 return 0;
5465}
5466
5467int SSL_free_buffers(SSL *ssl)
5468{
5469 RECORD_LAYER *rl = &ssl->rlayer;
5470
5471 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5472 return 0;
5473
5474 RECORD_LAYER_release(rl);
5475 return 1;
5476}
5477
5478int SSL_alloc_buffers(SSL *ssl)
5479{
5480 return ssl3_setup_buffers(ssl);
5481}
5482
5483void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5484{
5485 ctx->keylog_callback = cb;
5486}
5487
5488SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5489{
5490 return ctx->keylog_callback;
5491}
5492
5493static int nss_keylog_int(const char *prefix,
5494 SSL *ssl,
5495 const uint8_t *parameter_1,
5496 size_t parameter_1_len,
5497 const uint8_t *parameter_2,
5498 size_t parameter_2_len)
5499{
5500 char *out = NULL;
5501 char *cursor = NULL;
5502 size_t out_len = 0;
5503 size_t i;
5504 size_t prefix_len;
5505
5506 if (ssl->ctx->keylog_callback == NULL)
5507 return 1;
5508
5509 /*
5510 * Our output buffer will contain the following strings, rendered with
5511 * space characters in between, terminated by a NULL character: first the
5512 * prefix, then the first parameter, then the second parameter. The
5513 * meaning of each parameter depends on the specific key material being
5514 * logged. Note that the first and second parameters are encoded in
5515 * hexadecimal, so we need a buffer that is twice their lengths.
5516 */
5517 prefix_len = strlen(prefix);
5518 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5519 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5520 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5521 return 0;
5522 }
5523
5524 strcpy(cursor, prefix);
5525 cursor += prefix_len;
5526 *cursor++ = ' ';
5527
5528 for (i = 0; i < parameter_1_len; i++) {
5529 sprintf(cursor, "%02x", parameter_1[i]);
5530 cursor += 2;
5531 }
5532 *cursor++ = ' ';
5533
5534 for (i = 0; i < parameter_2_len; i++) {
5535 sprintf(cursor, "%02x", parameter_2[i]);
5536 cursor += 2;
5537 }
5538 *cursor = '\0';
5539
5540 ssl->ctx->keylog_callback(ssl, (const char *)out);
5541 OPENSSL_clear_free(out, out_len);
5542 return 1;
5543
5544}
5545
5546int ssl_log_rsa_client_key_exchange(SSL *ssl,
5547 const uint8_t *encrypted_premaster,
5548 size_t encrypted_premaster_len,
5549 const uint8_t *premaster,
5550 size_t premaster_len)
5551{
5552 if (encrypted_premaster_len < 8) {
5553 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5554 return 0;
5555 }
5556
5557 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5558 return nss_keylog_int("RSA",
5559 ssl,
5560 encrypted_premaster,
5561 8,
5562 premaster,
5563 premaster_len);
5564}
5565
5566int ssl_log_secret(SSL *ssl,
5567 const char *label,
5568 const uint8_t *secret,
5569 size_t secret_len)
5570{
5571 return nss_keylog_int(label,
5572 ssl,
5573 ssl->s3.client_random,
5574 SSL3_RANDOM_SIZE,
5575 secret,
5576 secret_len);
5577}
5578
5579#define SSLV2_CIPHER_LEN 3
5580
5581int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5582{
5583 int n;
5584
5585 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5586
5587 if (PACKET_remaining(cipher_suites) == 0) {
5588 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
5589 return 0;
5590 }
5591
5592 if (PACKET_remaining(cipher_suites) % n != 0) {
5593 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5594 return 0;
5595 }
5596
5597 OPENSSL_free(s->s3.tmp.ciphers_raw);
5598 s->s3.tmp.ciphers_raw = NULL;
5599 s->s3.tmp.ciphers_rawlen = 0;
5600
5601 if (sslv2format) {
5602 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5603 PACKET sslv2ciphers = *cipher_suites;
5604 unsigned int leadbyte;
5605 unsigned char *raw;
5606
5607 /*
5608 * We store the raw ciphers list in SSLv3+ format so we need to do some
5609 * preprocessing to convert the list first. If there are any SSLv2 only
5610 * ciphersuites with a non-zero leading byte then we are going to
5611 * slightly over allocate because we won't store those. But that isn't a
5612 * problem.
5613 */
5614 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5615 s->s3.tmp.ciphers_raw = raw;
5616 if (raw == NULL) {
5617 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5618 return 0;
5619 }
5620 for (s->s3.tmp.ciphers_rawlen = 0;
5621 PACKET_remaining(&sslv2ciphers) > 0;
5622 raw += TLS_CIPHER_LEN) {
5623 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5624 || (leadbyte == 0
5625 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5626 TLS_CIPHER_LEN))
5627 || (leadbyte != 0
5628 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5629 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
5630 OPENSSL_free(s->s3.tmp.ciphers_raw);
5631 s->s3.tmp.ciphers_raw = NULL;
5632 s->s3.tmp.ciphers_rawlen = 0;
5633 return 0;
5634 }
5635 if (leadbyte == 0)
5636 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5637 }
5638 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5639 &s->s3.tmp.ciphers_rawlen)) {
5640 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5641 return 0;
5642 }
5643 return 1;
5644}
5645
5646int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5647 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5648 STACK_OF(SSL_CIPHER) **scsvs)
5649{
5650 PACKET pkt;
5651
5652 if (!PACKET_buf_init(&pkt, bytes, len))
5653 return 0;
5654 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5655}
5656
5657int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5658 STACK_OF(SSL_CIPHER) **skp,
5659 STACK_OF(SSL_CIPHER) **scsvs_out,
5660 int sslv2format, int fatal)
5661{
5662 const SSL_CIPHER *c;
5663 STACK_OF(SSL_CIPHER) *sk = NULL;
5664 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5665 int n;
5666 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5667 unsigned char cipher[SSLV2_CIPHER_LEN];
5668
5669 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5670
5671 if (PACKET_remaining(cipher_suites) == 0) {
5672 if (fatal)
5673 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
5674 else
5675 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
5676 return 0;
5677 }
5678
5679 if (PACKET_remaining(cipher_suites) % n != 0) {
5680 if (fatal)
5681 SSLfatal(s, SSL_AD_DECODE_ERROR,
5682 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5683 else
5684 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5685 return 0;
5686 }
5687
5688 sk = sk_SSL_CIPHER_new_null();
5689 scsvs = sk_SSL_CIPHER_new_null();
5690 if (sk == NULL || scsvs == NULL) {
5691 if (fatal)
5692 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5693 else
5694 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5695 goto err;
5696 }
5697
5698 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5699 /*
5700 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5701 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5702 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5703 */
5704 if (sslv2format && cipher[0] != '\0')
5705 continue;
5706
5707 /* For SSLv2-compat, ignore leading 0-byte. */
5708 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5709 if (c != NULL) {
5710 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5711 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5712 if (fatal)
5713 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5714 else
5715 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5716 goto err;
5717 }
5718 }
5719 }
5720 if (PACKET_remaining(cipher_suites) > 0) {
5721 if (fatal)
5722 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
5723 else
5724 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
5725 goto err;
5726 }
5727
5728 if (skp != NULL)
5729 *skp = sk;
5730 else
5731 sk_SSL_CIPHER_free(sk);
5732 if (scsvs_out != NULL)
5733 *scsvs_out = scsvs;
5734 else
5735 sk_SSL_CIPHER_free(scsvs);
5736 return 1;
5737 err:
5738 sk_SSL_CIPHER_free(sk);
5739 sk_SSL_CIPHER_free(scsvs);
5740 return 0;
5741}
5742
5743int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5744{
5745 ctx->max_early_data = max_early_data;
5746
5747 return 1;
5748}
5749
5750uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5751{
5752 return ctx->max_early_data;
5753}
5754
5755int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5756{
5757 s->max_early_data = max_early_data;
5758
5759 return 1;
5760}
5761
5762uint32_t SSL_get_max_early_data(const SSL *s)
5763{
5764 return s->max_early_data;
5765}
5766
5767int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5768{
5769 ctx->recv_max_early_data = recv_max_early_data;
5770
5771 return 1;
5772}
5773
5774uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5775{
5776 return ctx->recv_max_early_data;
5777}
5778
5779int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5780{
5781 s->recv_max_early_data = recv_max_early_data;
5782
5783 return 1;
5784}
5785
5786uint32_t SSL_get_recv_max_early_data(const SSL *s)
5787{
5788 return s->recv_max_early_data;
5789}
5790
5791__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5792{
5793 /* Return any active Max Fragment Len extension */
5794 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5795 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5796
5797 /* return current SSL connection setting */
5798 return ssl->max_send_fragment;
5799}
5800
5801__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5802{
5803 /* Return a value regarding an active Max Fragment Len extension */
5804 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5805 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5806 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5807
5808 /* else limit |split_send_fragment| to current |max_send_fragment| */
5809 if (ssl->split_send_fragment > ssl->max_send_fragment)
5810 return ssl->max_send_fragment;
5811
5812 /* return current SSL connection setting */
5813 return ssl->split_send_fragment;
5814}
5815
5816int SSL_stateless(SSL *s)
5817{
5818 int ret;
5819
5820 /* Ensure there is no state left over from a previous invocation */
5821 if (!SSL_clear(s))
5822 return 0;
5823
5824 ERR_clear_error();
5825
5826 s->s3.flags |= TLS1_FLAGS_STATELESS;
5827 ret = SSL_accept(s);
5828 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5829
5830 if (ret > 0 && s->ext.cookieok)
5831 return 1;
5832
5833 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5834 return 0;
5835
5836 return -1;
5837}
5838
5839void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5840{
5841 ctx->pha_enabled = val;
5842}
5843
5844void SSL_set_post_handshake_auth(SSL *ssl, int val)
5845{
5846 ssl->pha_enabled = val;
5847}
5848
5849int SSL_verify_client_post_handshake(SSL *ssl)
5850{
5851 if (!SSL_IS_TLS13(ssl)) {
5852 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
5853 return 0;
5854 }
5855 if (!ssl->server) {
5856 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
5857 return 0;
5858 }
5859
5860 if (!SSL_is_init_finished(ssl)) {
5861 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
5862 return 0;
5863 }
5864
5865 switch (ssl->post_handshake_auth) {
5866 case SSL_PHA_NONE:
5867 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
5868 return 0;
5869 default:
5870 case SSL_PHA_EXT_SENT:
5871 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
5872 return 0;
5873 case SSL_PHA_EXT_RECEIVED:
5874 break;
5875 case SSL_PHA_REQUEST_PENDING:
5876 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
5877 return 0;
5878 case SSL_PHA_REQUESTED:
5879 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
5880 return 0;
5881 }
5882
5883 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5884
5885 /* checks verify_mode and algorithm_auth */
5886 if (!send_certificate_request(ssl)) {
5887 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5888 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
5889 return 0;
5890 }
5891
5892 ossl_statem_set_in_init(ssl, 1);
5893 return 1;
5894}
5895
5896int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5897 SSL_CTX_generate_session_ticket_fn gen_cb,
5898 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5899 void *arg)
5900{
5901 ctx->generate_ticket_cb = gen_cb;
5902 ctx->decrypt_ticket_cb = dec_cb;
5903 ctx->ticket_cb_data = arg;
5904 return 1;
5905}
5906
5907void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5908 SSL_allow_early_data_cb_fn cb,
5909 void *arg)
5910{
5911 ctx->allow_early_data_cb = cb;
5912 ctx->allow_early_data_cb_data = arg;
5913}
5914
5915void SSL_set_allow_early_data_cb(SSL *s,
5916 SSL_allow_early_data_cb_fn cb,
5917 void *arg)
5918{
5919 s->allow_early_data_cb = cb;
5920 s->allow_early_data_cb_data = arg;
5921}
5922
5923const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
5924 int nid,
5925 const char *properties)
5926{
5927 const EVP_CIPHER *ciph;
5928
5929 ciph = tls_get_cipher_from_engine(nid);
5930 if (ciph != NULL)
5931 return ciph;
5932
5933 /*
5934 * If there is no engine cipher then we do an explicit fetch. This may fail
5935 * and that could be ok
5936 */
5937 ERR_set_mark();
5938 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5939 ERR_pop_to_mark();
5940 return ciph;
5941}
5942
5943
5944int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5945{
5946 /* Don't up-ref an implicit EVP_CIPHER */
5947 if (EVP_CIPHER_get0_provider(cipher) == NULL)
5948 return 1;
5949
5950 /*
5951 * The cipher was explicitly fetched and therefore it is safe to cast
5952 * away the const
5953 */
5954 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5955}
5956
5957void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5958{
5959 if (cipher == NULL)
5960 return;
5961
5962 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
5963 /*
5964 * The cipher was explicitly fetched and therefore it is safe to cast
5965 * away the const
5966 */
5967 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5968 }
5969}
5970
5971const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
5972 int nid,
5973 const char *properties)
5974{
5975 const EVP_MD *md;
5976
5977 md = tls_get_digest_from_engine(nid);
5978 if (md != NULL)
5979 return md;
5980
5981 /* Otherwise we do an explicit fetch */
5982 ERR_set_mark();
5983 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5984 ERR_pop_to_mark();
5985 return md;
5986}
5987
5988int ssl_evp_md_up_ref(const EVP_MD *md)
5989{
5990 /* Don't up-ref an implicit EVP_MD */
5991 if (EVP_MD_get0_provider(md) == NULL)
5992 return 1;
5993
5994 /*
5995 * The digest was explicitly fetched and therefore it is safe to cast
5996 * away the const
5997 */
5998 return EVP_MD_up_ref((EVP_MD *)md);
5999}
6000
6001void ssl_evp_md_free(const EVP_MD *md)
6002{
6003 if (md == NULL)
6004 return;
6005
6006 if (EVP_MD_get0_provider(md) != NULL) {
6007 /*
6008 * The digest was explicitly fetched and therefore it is safe to cast
6009 * away the const
6010 */
6011 EVP_MD_free((EVP_MD *)md);
6012 }
6013}
6014
6015int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6016{
6017 if (!ssl_security(s, SSL_SECOP_TMP_DH,
6018 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6019 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6020 return 0;
6021 }
6022 EVP_PKEY_free(s->cert->dh_tmp);
6023 s->cert->dh_tmp = dhpkey;
6024 return 1;
6025}
6026
6027int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6028{
6029 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6030 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6031 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6032 return 0;
6033 }
6034 EVP_PKEY_free(ctx->cert->dh_tmp);
6035 ctx->cert->dh_tmp = dhpkey;
6036 return 1;
6037}
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