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source: vbox/trunk/src/libs/openssl-3.0.2/ssl/ssl_lib.c@ 94404

Last change on this file since 94404 was 94404, checked in by vboxsync, 3 years ago

libs/openssl: Update to 3.0.2 and switch to it, bugref:10128
File size: 165.8 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 * unprocessed data available or 0 otherwise (as opposed to the number of
1554 * bytes available). Unlike SSL_pending() this will take into account
1555 * read_ahead data. A 1 return simply indicates that we have unprocessed
1556 * data. That data may not result in any application data, or we may fail
1557 * to parse the records for some reason.
1558 */
1559 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1560 return 1;
1561
1562 return RECORD_LAYER_read_pending(&s->rlayer);
1563}
1564
1565X509 *SSL_get1_peer_certificate(const SSL *s)
1566{
1567 X509 *r = SSL_get0_peer_certificate(s);
1568
1569 if (r != NULL)
1570 X509_up_ref(r);
1571
1572 return r;
1573}
1574
1575X509 *SSL_get0_peer_certificate(const SSL *s)
1576{
1577 if ((s == NULL) || (s->session == NULL))
1578 return NULL;
1579 else
1580 return s->session->peer;
1581}
1582
1583STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1584{
1585 STACK_OF(X509) *r;
1586
1587 if ((s == NULL) || (s->session == NULL))
1588 r = NULL;
1589 else
1590 r = s->session->peer_chain;
1591
1592 /*
1593 * If we are a client, cert_chain includes the peer's own certificate; if
1594 * we are a server, it does not.
1595 */
1596
1597 return r;
1598}
1599
1600/*
1601 * Now in theory, since the calling process own 't' it should be safe to
1602 * modify. We need to be able to read f without being hassled
1603 */
1604int SSL_copy_session_id(SSL *t, const SSL *f)
1605{
1606 int i;
1607 /* Do we need to do SSL locking? */
1608 if (!SSL_set_session(t, SSL_get_session(f))) {
1609 return 0;
1610 }
1611
1612 /*
1613 * what if we are setup for one protocol version but want to talk another
1614 */
1615 if (t->method != f->method) {
1616 t->method->ssl_free(t);
1617 t->method = f->method;
1618 if (t->method->ssl_new(t) == 0)
1619 return 0;
1620 }
1621
1622 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1623 ssl_cert_free(t->cert);
1624 t->cert = f->cert;
1625 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1626 return 0;
1627 }
1628
1629 return 1;
1630}
1631
1632/* Fix this so it checks all the valid key/cert options */
1633int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1634{
1635 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1636 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1637 return 0;
1638 }
1639 if (ctx->cert->key->privatekey == NULL) {
1640 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1641 return 0;
1642 }
1643 return X509_check_private_key
1644 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1645}
1646
1647/* Fix this function so that it takes an optional type parameter */
1648int SSL_check_private_key(const SSL *ssl)
1649{
1650 if (ssl == NULL) {
1651 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1652 return 0;
1653 }
1654 if (ssl->cert->key->x509 == NULL) {
1655 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1656 return 0;
1657 }
1658 if (ssl->cert->key->privatekey == NULL) {
1659 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1660 return 0;
1661 }
1662 return X509_check_private_key(ssl->cert->key->x509,
1663 ssl->cert->key->privatekey);
1664}
1665
1666int SSL_waiting_for_async(SSL *s)
1667{
1668 if (s->job)
1669 return 1;
1670
1671 return 0;
1672}
1673
1674int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1675{
1676 ASYNC_WAIT_CTX *ctx = s->waitctx;
1677
1678 if (ctx == NULL)
1679 return 0;
1680 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1681}
1682
1683int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1684 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1685{
1686 ASYNC_WAIT_CTX *ctx = s->waitctx;
1687
1688 if (ctx == NULL)
1689 return 0;
1690 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1691 numdelfds);
1692}
1693
1694int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1695{
1696 ctx->async_cb = callback;
1697 return 1;
1698}
1699
1700int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1701{
1702 ctx->async_cb_arg = arg;
1703 return 1;
1704}
1705
1706int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1707{
1708 s->async_cb = callback;
1709 return 1;
1710}
1711
1712int SSL_set_async_callback_arg(SSL *s, void *arg)
1713{
1714 s->async_cb_arg = arg;
1715 return 1;
1716}
1717
1718int SSL_get_async_status(SSL *s, int *status)
1719{
1720 ASYNC_WAIT_CTX *ctx = s->waitctx;
1721
1722 if (ctx == NULL)
1723 return 0;
1724 *status = ASYNC_WAIT_CTX_get_status(ctx);
1725 return 1;
1726}
1727
1728int SSL_accept(SSL *s)
1729{
1730 if (s->handshake_func == NULL) {
1731 /* Not properly initialized yet */
1732 SSL_set_accept_state(s);
1733 }
1734
1735 return SSL_do_handshake(s);
1736}
1737
1738int SSL_connect(SSL *s)
1739{
1740 if (s->handshake_func == NULL) {
1741 /* Not properly initialized yet */
1742 SSL_set_connect_state(s);
1743 }
1744
1745 return SSL_do_handshake(s);
1746}
1747
1748long SSL_get_default_timeout(const SSL *s)
1749{
1750 return s->method->get_timeout();
1751}
1752
1753static int ssl_async_wait_ctx_cb(void *arg)
1754{
1755 SSL *s = (SSL *)arg;
1756
1757 return s->async_cb(s, s->async_cb_arg);
1758}
1759
1760static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1761 int (*func) (void *))
1762{
1763 int ret;
1764 if (s->waitctx == NULL) {
1765 s->waitctx = ASYNC_WAIT_CTX_new();
1766 if (s->waitctx == NULL)
1767 return -1;
1768 if (s->async_cb != NULL
1769 && !ASYNC_WAIT_CTX_set_callback
1770 (s->waitctx, ssl_async_wait_ctx_cb, s))
1771 return -1;
1772 }
1773
1774 s->rwstate = SSL_NOTHING;
1775 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1776 sizeof(struct ssl_async_args))) {
1777 case ASYNC_ERR:
1778 s->rwstate = SSL_NOTHING;
1779 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
1780 return -1;
1781 case ASYNC_PAUSE:
1782 s->rwstate = SSL_ASYNC_PAUSED;
1783 return -1;
1784 case ASYNC_NO_JOBS:
1785 s->rwstate = SSL_ASYNC_NO_JOBS;
1786 return -1;
1787 case ASYNC_FINISH:
1788 s->job = NULL;
1789 return ret;
1790 default:
1791 s->rwstate = SSL_NOTHING;
1792 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
1793 /* Shouldn't happen */
1794 return -1;
1795 }
1796}
1797
1798static int ssl_io_intern(void *vargs)
1799{
1800 struct ssl_async_args *args;
1801 SSL *s;
1802 void *buf;
1803 size_t num;
1804
1805 args = (struct ssl_async_args *)vargs;
1806 s = args->s;
1807 buf = args->buf;
1808 num = args->num;
1809 switch (args->type) {
1810 case READFUNC:
1811 return args->f.func_read(s, buf, num, &s->asyncrw);
1812 case WRITEFUNC:
1813 return args->f.func_write(s, buf, num, &s->asyncrw);
1814 case OTHERFUNC:
1815 return args->f.func_other(s);
1816 }
1817 return -1;
1818}
1819
1820int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1821{
1822 if (s->handshake_func == NULL) {
1823 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
1824 return -1;
1825 }
1826
1827 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1828 s->rwstate = SSL_NOTHING;
1829 return 0;
1830 }
1831
1832 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1833 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1834 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1835 return 0;
1836 }
1837 /*
1838 * If we are a client and haven't received the ServerHello etc then we
1839 * better do that
1840 */
1841 ossl_statem_check_finish_init(s, 0);
1842
1843 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1844 struct ssl_async_args args;
1845 int ret;
1846
1847 args.s = s;
1848 args.buf = buf;
1849 args.num = num;
1850 args.type = READFUNC;
1851 args.f.func_read = s->method->ssl_read;
1852
1853 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1854 *readbytes = s->asyncrw;
1855 return ret;
1856 } else {
1857 return s->method->ssl_read(s, buf, num, readbytes);
1858 }
1859}
1860
1861int SSL_read(SSL *s, void *buf, int num)
1862{
1863 int ret;
1864 size_t readbytes;
1865
1866 if (num < 0) {
1867 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
1868 return -1;
1869 }
1870
1871 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1872
1873 /*
1874 * The cast is safe here because ret should be <= INT_MAX because num is
1875 * <= INT_MAX
1876 */
1877 if (ret > 0)
1878 ret = (int)readbytes;
1879
1880 return ret;
1881}
1882
1883int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1884{
1885 int ret = ssl_read_internal(s, buf, num, readbytes);
1886
1887 if (ret < 0)
1888 ret = 0;
1889 return ret;
1890}
1891
1892int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1893{
1894 int ret;
1895
1896 if (!s->server) {
1897 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1898 return SSL_READ_EARLY_DATA_ERROR;
1899 }
1900
1901 switch (s->early_data_state) {
1902 case SSL_EARLY_DATA_NONE:
1903 if (!SSL_in_before(s)) {
1904 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1905 return SSL_READ_EARLY_DATA_ERROR;
1906 }
1907 /* fall through */
1908
1909 case SSL_EARLY_DATA_ACCEPT_RETRY:
1910 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1911 ret = SSL_accept(s);
1912 if (ret <= 0) {
1913 /* NBIO or error */
1914 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1915 return SSL_READ_EARLY_DATA_ERROR;
1916 }
1917 /* fall through */
1918
1919 case SSL_EARLY_DATA_READ_RETRY:
1920 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1921 s->early_data_state = SSL_EARLY_DATA_READING;
1922 ret = SSL_read_ex(s, buf, num, readbytes);
1923 /*
1924 * State machine will update early_data_state to
1925 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1926 * message
1927 */
1928 if (ret > 0 || (ret <= 0 && s->early_data_state
1929 != SSL_EARLY_DATA_FINISHED_READING)) {
1930 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1931 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1932 : SSL_READ_EARLY_DATA_ERROR;
1933 }
1934 } else {
1935 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1936 }
1937 *readbytes = 0;
1938 return SSL_READ_EARLY_DATA_FINISH;
1939
1940 default:
1941 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1942 return SSL_READ_EARLY_DATA_ERROR;
1943 }
1944}
1945
1946int SSL_get_early_data_status(const SSL *s)
1947{
1948 return s->ext.early_data;
1949}
1950
1951static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1952{
1953 if (s->handshake_func == NULL) {
1954 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
1955 return -1;
1956 }
1957
1958 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1959 return 0;
1960 }
1961 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1962 struct ssl_async_args args;
1963 int ret;
1964
1965 args.s = s;
1966 args.buf = buf;
1967 args.num = num;
1968 args.type = READFUNC;
1969 args.f.func_read = s->method->ssl_peek;
1970
1971 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1972 *readbytes = s->asyncrw;
1973 return ret;
1974 } else {
1975 return s->method->ssl_peek(s, buf, num, readbytes);
1976 }
1977}
1978
1979int SSL_peek(SSL *s, void *buf, int num)
1980{
1981 int ret;
1982 size_t readbytes;
1983
1984 if (num < 0) {
1985 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
1986 return -1;
1987 }
1988
1989 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1990
1991 /*
1992 * The cast is safe here because ret should be <= INT_MAX because num is
1993 * <= INT_MAX
1994 */
1995 if (ret > 0)
1996 ret = (int)readbytes;
1997
1998 return ret;
1999}
2000
2001
2002int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2003{
2004 int ret = ssl_peek_internal(s, buf, num, readbytes);
2005
2006 if (ret < 0)
2007 ret = 0;
2008 return ret;
2009}
2010
2011int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2012{
2013 if (s->handshake_func == NULL) {
2014 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2015 return -1;
2016 }
2017
2018 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2019 s->rwstate = SSL_NOTHING;
2020 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2021 return -1;
2022 }
2023
2024 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2025 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2026 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2027 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2028 return 0;
2029 }
2030 /* If we are a client and haven't sent the Finished we better do that */
2031 ossl_statem_check_finish_init(s, 1);
2032
2033 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2034 int ret;
2035 struct ssl_async_args args;
2036
2037 args.s = s;
2038 args.buf = (void *)buf;
2039 args.num = num;
2040 args.type = WRITEFUNC;
2041 args.f.func_write = s->method->ssl_write;
2042
2043 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2044 *written = s->asyncrw;
2045 return ret;
2046 } else {
2047 return s->method->ssl_write(s, buf, num, written);
2048 }
2049}
2050
2051ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2052{
2053 ossl_ssize_t ret;
2054
2055 if (s->handshake_func == NULL) {
2056 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2057 return -1;
2058 }
2059
2060 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2061 s->rwstate = SSL_NOTHING;
2062 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2063 return -1;
2064 }
2065
2066 if (!BIO_get_ktls_send(s->wbio)) {
2067 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2068 return -1;
2069 }
2070
2071 /* If we have an alert to send, lets send it */
2072 if (s->s3.alert_dispatch) {
2073 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2074 if (ret <= 0) {
2075 /* SSLfatal() already called if appropriate */
2076 return ret;
2077 }
2078 /* if it went, fall through and send more stuff */
2079 }
2080
2081 s->rwstate = SSL_WRITING;
2082 if (BIO_flush(s->wbio) <= 0) {
2083 if (!BIO_should_retry(s->wbio)) {
2084 s->rwstate = SSL_NOTHING;
2085 } else {
2086#ifdef EAGAIN
2087 set_sys_error(EAGAIN);
2088#endif
2089 }
2090 return -1;
2091 }
2092
2093#ifdef OPENSSL_NO_KTLS
2094 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2095 "can't call ktls_sendfile(), ktls disabled");
2096 return -1;
2097#else
2098 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2099 if (ret < 0) {
2100#if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2101 if ((get_last_sys_error() == EAGAIN) ||
2102 (get_last_sys_error() == EINTR) ||
2103 (get_last_sys_error() == EBUSY))
2104 BIO_set_retry_write(s->wbio);
2105 else
2106#endif
2107 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2108 return ret;
2109 }
2110 s->rwstate = SSL_NOTHING;
2111 return ret;
2112#endif
2113}
2114
2115int SSL_write(SSL *s, const void *buf, int num)
2116{
2117 int ret;
2118 size_t written;
2119
2120 if (num < 0) {
2121 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2122 return -1;
2123 }
2124
2125 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2126
2127 /*
2128 * The cast is safe here because ret should be <= INT_MAX because num is
2129 * <= INT_MAX
2130 */
2131 if (ret > 0)
2132 ret = (int)written;
2133
2134 return ret;
2135}
2136
2137int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2138{
2139 int ret = ssl_write_internal(s, buf, num, written);
2140
2141 if (ret < 0)
2142 ret = 0;
2143 return ret;
2144}
2145
2146int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2147{
2148 int ret, early_data_state;
2149 size_t writtmp;
2150 uint32_t partialwrite;
2151
2152 switch (s->early_data_state) {
2153 case SSL_EARLY_DATA_NONE:
2154 if (s->server
2155 || !SSL_in_before(s)
2156 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2157 && (s->psk_use_session_cb == NULL))) {
2158 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2159 return 0;
2160 }
2161 /* fall through */
2162
2163 case SSL_EARLY_DATA_CONNECT_RETRY:
2164 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2165 ret = SSL_connect(s);
2166 if (ret <= 0) {
2167 /* NBIO or error */
2168 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2169 return 0;
2170 }
2171 /* fall through */
2172
2173 case SSL_EARLY_DATA_WRITE_RETRY:
2174 s->early_data_state = SSL_EARLY_DATA_WRITING;
2175 /*
2176 * We disable partial write for early data because we don't keep track
2177 * of how many bytes we've written between the SSL_write_ex() call and
2178 * the flush if the flush needs to be retried)
2179 */
2180 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2181 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2182 ret = SSL_write_ex(s, buf, num, &writtmp);
2183 s->mode |= partialwrite;
2184 if (!ret) {
2185 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2186 return ret;
2187 }
2188 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2189 /* fall through */
2190
2191 case SSL_EARLY_DATA_WRITE_FLUSH:
2192 /* The buffering BIO is still in place so we need to flush it */
2193 if (statem_flush(s) != 1)
2194 return 0;
2195 *written = num;
2196 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2197 return 1;
2198
2199 case SSL_EARLY_DATA_FINISHED_READING:
2200 case SSL_EARLY_DATA_READ_RETRY:
2201 early_data_state = s->early_data_state;
2202 /* We are a server writing to an unauthenticated client */
2203 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2204 ret = SSL_write_ex(s, buf, num, written);
2205 /* The buffering BIO is still in place */
2206 if (ret)
2207 (void)BIO_flush(s->wbio);
2208 s->early_data_state = early_data_state;
2209 return ret;
2210
2211 default:
2212 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2213 return 0;
2214 }
2215}
2216
2217int SSL_shutdown(SSL *s)
2218{
2219 /*
2220 * Note that this function behaves differently from what one might
2221 * expect. Return values are 0 for no success (yet), 1 for success; but
2222 * calling it once is usually not enough, even if blocking I/O is used
2223 * (see ssl3_shutdown).
2224 */
2225
2226 if (s->handshake_func == NULL) {
2227 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2228 return -1;
2229 }
2230
2231 if (!SSL_in_init(s)) {
2232 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2233 struct ssl_async_args args;
2234
2235 args.s = s;
2236 args.type = OTHERFUNC;
2237 args.f.func_other = s->method->ssl_shutdown;
2238
2239 return ssl_start_async_job(s, &args, ssl_io_intern);
2240 } else {
2241 return s->method->ssl_shutdown(s);
2242 }
2243 } else {
2244 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2245 return -1;
2246 }
2247}
2248
2249int SSL_key_update(SSL *s, int updatetype)
2250{
2251 if (!SSL_IS_TLS13(s)) {
2252 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2253 return 0;
2254 }
2255
2256 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2257 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2258 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2259 return 0;
2260 }
2261
2262 if (!SSL_is_init_finished(s)) {
2263 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2264 return 0;
2265 }
2266
2267 if (RECORD_LAYER_write_pending(&s->rlayer)) {
2268 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2269 return 0;
2270 }
2271
2272 ossl_statem_set_in_init(s, 1);
2273 s->key_update = updatetype;
2274 return 1;
2275}
2276
2277int SSL_get_key_update_type(const SSL *s)
2278{
2279 return s->key_update;
2280}
2281
2282/*
2283 * Can we accept a renegotiation request? If yes, set the flag and
2284 * return 1 if yes. If not, raise error and return 0.
2285 */
2286static int can_renegotiate(const SSL *s)
2287{
2288 if (SSL_IS_TLS13(s)) {
2289 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2290 return 0;
2291 }
2292
2293 if ((s->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2294 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2295 return 0;
2296 }
2297
2298 return 1;
2299}
2300
2301int SSL_renegotiate(SSL *s)
2302{
2303 if (!can_renegotiate(s))
2304 return 0;
2305
2306 s->renegotiate = 1;
2307 s->new_session = 1;
2308 return s->method->ssl_renegotiate(s);
2309}
2310
2311int SSL_renegotiate_abbreviated(SSL *s)
2312{
2313 if (!can_renegotiate(s))
2314 return 0;
2315
2316 s->renegotiate = 1;
2317 s->new_session = 0;
2318 return s->method->ssl_renegotiate(s);
2319}
2320
2321int SSL_renegotiate_pending(const SSL *s)
2322{
2323 /*
2324 * becomes true when negotiation is requested; false again once a
2325 * handshake has finished
2326 */
2327 return (s->renegotiate != 0);
2328}
2329
2330int SSL_new_session_ticket(SSL *s)
2331{
2332 /* If we are in init because we're sending tickets, okay to send more. */
2333 if ((SSL_in_init(s) && s->ext.extra_tickets_expected == 0)
2334 || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2335 || !SSL_IS_TLS13(s))
2336 return 0;
2337 s->ext.extra_tickets_expected++;
2338 if (!RECORD_LAYER_write_pending(&s->rlayer) && !SSL_in_init(s))
2339 ossl_statem_set_in_init(s, 1);
2340 return 1;
2341}
2342
2343long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2344{
2345 long l;
2346
2347 switch (cmd) {
2348 case SSL_CTRL_GET_READ_AHEAD:
2349 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2350 case SSL_CTRL_SET_READ_AHEAD:
2351 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2352 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2353 return l;
2354
2355 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2356 s->msg_callback_arg = parg;
2357 return 1;
2358
2359 case SSL_CTRL_MODE:
2360 return (s->mode |= larg);
2361 case SSL_CTRL_CLEAR_MODE:
2362 return (s->mode &= ~larg);
2363 case SSL_CTRL_GET_MAX_CERT_LIST:
2364 return (long)s->max_cert_list;
2365 case SSL_CTRL_SET_MAX_CERT_LIST:
2366 if (larg < 0)
2367 return 0;
2368 l = (long)s->max_cert_list;
2369 s->max_cert_list = (size_t)larg;
2370 return l;
2371 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2372 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2373 return 0;
2374#ifndef OPENSSL_NO_KTLS
2375 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2376 return 0;
2377#endif /* OPENSSL_NO_KTLS */
2378 s->max_send_fragment = larg;
2379 if (s->max_send_fragment < s->split_send_fragment)
2380 s->split_send_fragment = s->max_send_fragment;
2381 return 1;
2382 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2383 if ((size_t)larg > s->max_send_fragment || larg == 0)
2384 return 0;
2385 s->split_send_fragment = larg;
2386 return 1;
2387 case SSL_CTRL_SET_MAX_PIPELINES:
2388 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2389 return 0;
2390 s->max_pipelines = larg;
2391 if (larg > 1)
2392 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2393 return 1;
2394 case SSL_CTRL_GET_RI_SUPPORT:
2395 return s->s3.send_connection_binding;
2396 case SSL_CTRL_SET_RETRY_VERIFY:
2397 s->rwstate = SSL_RETRY_VERIFY;
2398 return 1;
2399 case SSL_CTRL_CERT_FLAGS:
2400 return (s->cert->cert_flags |= larg);
2401 case SSL_CTRL_CLEAR_CERT_FLAGS:
2402 return (s->cert->cert_flags &= ~larg);
2403
2404 case SSL_CTRL_GET_RAW_CIPHERLIST:
2405 if (parg) {
2406 if (s->s3.tmp.ciphers_raw == NULL)
2407 return 0;
2408 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2409 return (int)s->s3.tmp.ciphers_rawlen;
2410 } else {
2411 return TLS_CIPHER_LEN;
2412 }
2413 case SSL_CTRL_GET_EXTMS_SUPPORT:
2414 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2415 return -1;
2416 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2417 return 1;
2418 else
2419 return 0;
2420 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2421 return ssl_check_allowed_versions(larg, s->max_proto_version)
2422 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2423 &s->min_proto_version);
2424 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2425 return s->min_proto_version;
2426 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2427 return ssl_check_allowed_versions(s->min_proto_version, larg)
2428 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2429 &s->max_proto_version);
2430 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2431 return s->max_proto_version;
2432 default:
2433 return s->method->ssl_ctrl(s, cmd, larg, parg);
2434 }
2435}
2436
2437long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2438{
2439 switch (cmd) {
2440 case SSL_CTRL_SET_MSG_CALLBACK:
2441 s->msg_callback = (void (*)
2442 (int write_p, int version, int content_type,
2443 const void *buf, size_t len, SSL *ssl,
2444 void *arg))(fp);
2445 return 1;
2446
2447 default:
2448 return s->method->ssl_callback_ctrl(s, cmd, fp);
2449 }
2450}
2451
2452LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2453{
2454 return ctx->sessions;
2455}
2456
2457static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2458{
2459 int res = 0;
2460
2461 if (ssl_tsan_lock(ctx)) {
2462 res = tsan_load(stat);
2463 ssl_tsan_unlock(ctx);
2464 }
2465 return res;
2466}
2467
2468long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2469{
2470 long l;
2471 /* For some cases with ctx == NULL perform syntax checks */
2472 if (ctx == NULL) {
2473 switch (cmd) {
2474 case SSL_CTRL_SET_GROUPS_LIST:
2475 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2476 case SSL_CTRL_SET_SIGALGS_LIST:
2477 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2478 return tls1_set_sigalgs_list(NULL, parg, 0);
2479 default:
2480 return 0;
2481 }
2482 }
2483
2484 switch (cmd) {
2485 case SSL_CTRL_GET_READ_AHEAD:
2486 return ctx->read_ahead;
2487 case SSL_CTRL_SET_READ_AHEAD:
2488 l = ctx->read_ahead;
2489 ctx->read_ahead = larg;
2490 return l;
2491
2492 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2493 ctx->msg_callback_arg = parg;
2494 return 1;
2495
2496 case SSL_CTRL_GET_MAX_CERT_LIST:
2497 return (long)ctx->max_cert_list;
2498 case SSL_CTRL_SET_MAX_CERT_LIST:
2499 if (larg < 0)
2500 return 0;
2501 l = (long)ctx->max_cert_list;
2502 ctx->max_cert_list = (size_t)larg;
2503 return l;
2504
2505 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2506 if (larg < 0)
2507 return 0;
2508 l = (long)ctx->session_cache_size;
2509 ctx->session_cache_size = (size_t)larg;
2510 return l;
2511 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2512 return (long)ctx->session_cache_size;
2513 case SSL_CTRL_SET_SESS_CACHE_MODE:
2514 l = ctx->session_cache_mode;
2515 ctx->session_cache_mode = larg;
2516 return l;
2517 case SSL_CTRL_GET_SESS_CACHE_MODE:
2518 return ctx->session_cache_mode;
2519
2520 case SSL_CTRL_SESS_NUMBER:
2521 return lh_SSL_SESSION_num_items(ctx->sessions);
2522 case SSL_CTRL_SESS_CONNECT:
2523 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2524 case SSL_CTRL_SESS_CONNECT_GOOD:
2525 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2526 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2527 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2528 case SSL_CTRL_SESS_ACCEPT:
2529 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2530 case SSL_CTRL_SESS_ACCEPT_GOOD:
2531 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2532 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2533 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2534 case SSL_CTRL_SESS_HIT:
2535 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2536 case SSL_CTRL_SESS_CB_HIT:
2537 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2538 case SSL_CTRL_SESS_MISSES:
2539 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2540 case SSL_CTRL_SESS_TIMEOUTS:
2541 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2542 case SSL_CTRL_SESS_CACHE_FULL:
2543 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2544 case SSL_CTRL_MODE:
2545 return (ctx->mode |= larg);
2546 case SSL_CTRL_CLEAR_MODE:
2547 return (ctx->mode &= ~larg);
2548 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2549 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2550 return 0;
2551 ctx->max_send_fragment = larg;
2552 if (ctx->max_send_fragment < ctx->split_send_fragment)
2553 ctx->split_send_fragment = ctx->max_send_fragment;
2554 return 1;
2555 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2556 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2557 return 0;
2558 ctx->split_send_fragment = larg;
2559 return 1;
2560 case SSL_CTRL_SET_MAX_PIPELINES:
2561 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2562 return 0;
2563 ctx->max_pipelines = larg;
2564 return 1;
2565 case SSL_CTRL_CERT_FLAGS:
2566 return (ctx->cert->cert_flags |= larg);
2567 case SSL_CTRL_CLEAR_CERT_FLAGS:
2568 return (ctx->cert->cert_flags &= ~larg);
2569 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2570 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2571 && ssl_set_version_bound(ctx->method->version, (int)larg,
2572 &ctx->min_proto_version);
2573 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2574 return ctx->min_proto_version;
2575 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2576 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2577 && ssl_set_version_bound(ctx->method->version, (int)larg,
2578 &ctx->max_proto_version);
2579 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2580 return ctx->max_proto_version;
2581 default:
2582 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2583 }
2584}
2585
2586long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2587{
2588 switch (cmd) {
2589 case SSL_CTRL_SET_MSG_CALLBACK:
2590 ctx->msg_callback = (void (*)
2591 (int write_p, int version, int content_type,
2592 const void *buf, size_t len, SSL *ssl,
2593 void *arg))(fp);
2594 return 1;
2595
2596 default:
2597 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2598 }
2599}
2600
2601int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2602{
2603 if (a->id > b->id)
2604 return 1;
2605 if (a->id < b->id)
2606 return -1;
2607 return 0;
2608}
2609
2610int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2611 const SSL_CIPHER *const *bp)
2612{
2613 if ((*ap)->id > (*bp)->id)
2614 return 1;
2615 if ((*ap)->id < (*bp)->id)
2616 return -1;
2617 return 0;
2618}
2619
2620/** return a STACK of the ciphers available for the SSL and in order of
2621 * preference */
2622STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2623{
2624 if (s != NULL) {
2625 if (s->cipher_list != NULL) {
2626 return s->cipher_list;
2627 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2628 return s->ctx->cipher_list;
2629 }
2630 }
2631 return NULL;
2632}
2633
2634STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2635{
2636 if ((s == NULL) || !s->server)
2637 return NULL;
2638 return s->peer_ciphers;
2639}
2640
2641STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2642{
2643 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2644 int i;
2645
2646 ciphers = SSL_get_ciphers(s);
2647 if (!ciphers)
2648 return NULL;
2649 if (!ssl_set_client_disabled(s))
2650 return NULL;
2651 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2652 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2653 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2654 if (!sk)
2655 sk = sk_SSL_CIPHER_new_null();
2656 if (!sk)
2657 return NULL;
2658 if (!sk_SSL_CIPHER_push(sk, c)) {
2659 sk_SSL_CIPHER_free(sk);
2660 return NULL;
2661 }
2662 }
2663 }
2664 return sk;
2665}
2666
2667/** return a STACK of the ciphers available for the SSL and in order of
2668 * algorithm id */
2669STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2670{
2671 if (s != NULL) {
2672 if (s->cipher_list_by_id != NULL) {
2673 return s->cipher_list_by_id;
2674 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2675 return s->ctx->cipher_list_by_id;
2676 }
2677 }
2678 return NULL;
2679}
2680
2681/** The old interface to get the same thing as SSL_get_ciphers() */
2682const char *SSL_get_cipher_list(const SSL *s, int n)
2683{
2684 const SSL_CIPHER *c;
2685 STACK_OF(SSL_CIPHER) *sk;
2686
2687 if (s == NULL)
2688 return NULL;
2689 sk = SSL_get_ciphers(s);
2690 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2691 return NULL;
2692 c = sk_SSL_CIPHER_value(sk, n);
2693 if (c == NULL)
2694 return NULL;
2695 return c->name;
2696}
2697
2698/** return a STACK of the ciphers available for the SSL_CTX and in order of
2699 * preference */
2700STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2701{
2702 if (ctx != NULL)
2703 return ctx->cipher_list;
2704 return NULL;
2705}
2706
2707/*
2708 * Distinguish between ciphers controlled by set_ciphersuite() and
2709 * set_cipher_list() when counting.
2710 */
2711static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2712{
2713 int i, num = 0;
2714 const SSL_CIPHER *c;
2715
2716 if (sk == NULL)
2717 return 0;
2718 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2719 c = sk_SSL_CIPHER_value(sk, i);
2720 if (c->min_tls >= TLS1_3_VERSION)
2721 continue;
2722 num++;
2723 }
2724 return num;
2725}
2726
2727/** specify the ciphers to be used by default by the SSL_CTX */
2728int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2729{
2730 STACK_OF(SSL_CIPHER) *sk;
2731
2732 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
2733 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2734 ctx->cert);
2735 /*
2736 * ssl_create_cipher_list may return an empty stack if it was unable to
2737 * find a cipher matching the given rule string (for example if the rule
2738 * string specifies a cipher which has been disabled). This is not an
2739 * error as far as ssl_create_cipher_list is concerned, and hence
2740 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2741 */
2742 if (sk == NULL)
2743 return 0;
2744 else if (cipher_list_tls12_num(sk) == 0) {
2745 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
2746 return 0;
2747 }
2748 return 1;
2749}
2750
2751/** specify the ciphers to be used by the SSL */
2752int SSL_set_cipher_list(SSL *s, const char *str)
2753{
2754 STACK_OF(SSL_CIPHER) *sk;
2755
2756 sk = ssl_create_cipher_list(s->ctx, s->tls13_ciphersuites,
2757 &s->cipher_list, &s->cipher_list_by_id, str,
2758 s->cert);
2759 /* see comment in SSL_CTX_set_cipher_list */
2760 if (sk == NULL)
2761 return 0;
2762 else if (cipher_list_tls12_num(sk) == 0) {
2763 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
2764 return 0;
2765 }
2766 return 1;
2767}
2768
2769char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2770{
2771 char *p;
2772 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2773 const SSL_CIPHER *c;
2774 int i;
2775
2776 if (!s->server
2777 || s->peer_ciphers == NULL
2778 || size < 2)
2779 return NULL;
2780
2781 p = buf;
2782 clntsk = s->peer_ciphers;
2783 srvrsk = SSL_get_ciphers(s);
2784 if (clntsk == NULL || srvrsk == NULL)
2785 return NULL;
2786
2787 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2788 return NULL;
2789
2790 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2791 int n;
2792
2793 c = sk_SSL_CIPHER_value(clntsk, i);
2794 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2795 continue;
2796
2797 n = strlen(c->name);
2798 if (n + 1 > size) {
2799 if (p != buf)
2800 --p;
2801 *p = '\0';
2802 return buf;
2803 }
2804 strcpy(p, c->name);
2805 p += n;
2806 *(p++) = ':';
2807 size -= n + 1;
2808 }
2809 p[-1] = '\0';
2810 return buf;
2811}
2812
2813/**
2814 * Return the requested servername (SNI) value. Note that the behaviour varies
2815 * depending on:
2816 * - whether this is called by the client or the server,
2817 * - if we are before or during/after the handshake,
2818 * - if a resumption or normal handshake is being attempted/has occurred
2819 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2820 *
2821 * Note that only the host_name type is defined (RFC 3546).
2822 */
2823const char *SSL_get_servername(const SSL *s, const int type)
2824{
2825 /*
2826 * If we don't know if we are the client or the server yet then we assume
2827 * client.
2828 */
2829 int server = s->handshake_func == NULL ? 0 : s->server;
2830 if (type != TLSEXT_NAMETYPE_host_name)
2831 return NULL;
2832
2833 if (server) {
2834 /**
2835 * Server side
2836 * In TLSv1.3 on the server SNI is not associated with the session
2837 * but in TLSv1.2 or below it is.
2838 *
2839 * Before the handshake:
2840 * - return NULL
2841 *
2842 * During/after the handshake (TLSv1.2 or below resumption occurred):
2843 * - If a servername was accepted by the server in the original
2844 * handshake then it will return that servername, or NULL otherwise.
2845 *
2846 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2847 * - The function will return the servername requested by the client in
2848 * this handshake or NULL if none was requested.
2849 */
2850 if (s->hit && !SSL_IS_TLS13(s))
2851 return s->session->ext.hostname;
2852 } else {
2853 /**
2854 * Client side
2855 *
2856 * Before the handshake:
2857 * - If a servername has been set via a call to
2858 * SSL_set_tlsext_host_name() then it will return that servername
2859 * - If one has not been set, but a TLSv1.2 resumption is being
2860 * attempted and the session from the original handshake had a
2861 * servername accepted by the server then it will return that
2862 * servername
2863 * - Otherwise it returns NULL
2864 *
2865 * During/after the handshake (TLSv1.2 or below resumption occurred):
2866 * - If the session from the original handshake had a servername accepted
2867 * by the server then it will return that servername.
2868 * - Otherwise it returns the servername set via
2869 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2870 *
2871 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2872 * - It will return the servername set via SSL_set_tlsext_host_name()
2873 * (or NULL if it was not called).
2874 */
2875 if (SSL_in_before(s)) {
2876 if (s->ext.hostname == NULL
2877 && s->session != NULL
2878 && s->session->ssl_version != TLS1_3_VERSION)
2879 return s->session->ext.hostname;
2880 } else {
2881 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2882 return s->session->ext.hostname;
2883 }
2884 }
2885
2886 return s->ext.hostname;
2887}
2888
2889int SSL_get_servername_type(const SSL *s)
2890{
2891 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2892 return TLSEXT_NAMETYPE_host_name;
2893 return -1;
2894}
2895
2896/*
2897 * SSL_select_next_proto implements the standard protocol selection. It is
2898 * expected that this function is called from the callback set by
2899 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2900 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2901 * not included in the length. A byte string of length 0 is invalid. No byte
2902 * string may be truncated. The current, but experimental algorithm for
2903 * selecting the protocol is: 1) If the server doesn't support NPN then this
2904 * is indicated to the callback. In this case, the client application has to
2905 * abort the connection or have a default application level protocol. 2) If
2906 * the server supports NPN, but advertises an empty list then the client
2907 * selects the first protocol in its list, but indicates via the API that this
2908 * fallback case was enacted. 3) Otherwise, the client finds the first
2909 * protocol in the server's list that it supports and selects this protocol.
2910 * This is because it's assumed that the server has better information about
2911 * which protocol a client should use. 4) If the client doesn't support any
2912 * of the server's advertised protocols, then this is treated the same as
2913 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2914 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2915 */
2916int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2917 const unsigned char *server,
2918 unsigned int server_len,
2919 const unsigned char *client, unsigned int client_len)
2920{
2921 unsigned int i, j;
2922 const unsigned char *result;
2923 int status = OPENSSL_NPN_UNSUPPORTED;
2924
2925 /*
2926 * For each protocol in server preference order, see if we support it.
2927 */
2928 for (i = 0; i < server_len;) {
2929 for (j = 0; j < client_len;) {
2930 if (server[i] == client[j] &&
2931 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2932 /* We found a match */
2933 result = &server[i];
2934 status = OPENSSL_NPN_NEGOTIATED;
2935 goto found;
2936 }
2937 j += client[j];
2938 j++;
2939 }
2940 i += server[i];
2941 i++;
2942 }
2943
2944 /* There's no overlap between our protocols and the server's list. */
2945 result = client;
2946 status = OPENSSL_NPN_NO_OVERLAP;
2947
2948 found:
2949 *out = (unsigned char *)result + 1;
2950 *outlen = result[0];
2951 return status;
2952}
2953
2954#ifndef OPENSSL_NO_NEXTPROTONEG
2955/*
2956 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2957 * client's requested protocol for this connection and returns 0. If the
2958 * client didn't request any protocol, then *data is set to NULL. Note that
2959 * the client can request any protocol it chooses. The value returned from
2960 * this function need not be a member of the list of supported protocols
2961 * provided by the callback.
2962 */
2963void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2964 unsigned *len)
2965{
2966 *data = s->ext.npn;
2967 if (*data == NULL) {
2968 *len = 0;
2969 } else {
2970 *len = (unsigned int)s->ext.npn_len;
2971 }
2972}
2973
2974/*
2975 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2976 * a TLS server needs a list of supported protocols for Next Protocol
2977 * Negotiation. The returned list must be in wire format. The list is
2978 * returned by setting |out| to point to it and |outlen| to its length. This
2979 * memory will not be modified, but one should assume that the SSL* keeps a
2980 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2981 * wishes to advertise. Otherwise, no such extension will be included in the
2982 * ServerHello.
2983 */
2984void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2985 SSL_CTX_npn_advertised_cb_func cb,
2986 void *arg)
2987{
2988 ctx->ext.npn_advertised_cb = cb;
2989 ctx->ext.npn_advertised_cb_arg = arg;
2990}
2991
2992/*
2993 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2994 * client needs to select a protocol from the server's provided list. |out|
2995 * must be set to point to the selected protocol (which may be within |in|).
2996 * The length of the protocol name must be written into |outlen|. The
2997 * server's advertised protocols are provided in |in| and |inlen|. The
2998 * callback can assume that |in| is syntactically valid. The client must
2999 * select a protocol. It is fatal to the connection if this callback returns
3000 * a value other than SSL_TLSEXT_ERR_OK.
3001 */
3002void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3003 SSL_CTX_npn_select_cb_func cb,
3004 void *arg)
3005{
3006 ctx->ext.npn_select_cb = cb;
3007 ctx->ext.npn_select_cb_arg = arg;
3008}
3009#endif
3010
3011static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3012{
3013 unsigned int idx;
3014
3015 if (protos_len < 2 || protos == NULL)
3016 return 0;
3017
3018 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3019 if (protos[idx] == 0)
3020 return 0;
3021 }
3022 return idx == protos_len;
3023}
3024/*
3025 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3026 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3027 * length-prefixed strings). Returns 0 on success.
3028 */
3029int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3030 unsigned int protos_len)
3031{
3032 unsigned char *alpn;
3033
3034 if (protos_len == 0 || protos == NULL) {
3035 OPENSSL_free(ctx->ext.alpn);
3036 ctx->ext.alpn = NULL;
3037 ctx->ext.alpn_len = 0;
3038 return 0;
3039 }
3040 /* Not valid per RFC */
3041 if (!alpn_value_ok(protos, protos_len))
3042 return 1;
3043
3044 alpn = OPENSSL_memdup(protos, protos_len);
3045 if (alpn == NULL) {
3046 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3047 return 1;
3048 }
3049 OPENSSL_free(ctx->ext.alpn);
3050 ctx->ext.alpn = alpn;
3051 ctx->ext.alpn_len = protos_len;
3052
3053 return 0;
3054}
3055
3056/*
3057 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3058 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3059 * length-prefixed strings). Returns 0 on success.
3060 */
3061int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3062 unsigned int protos_len)
3063{
3064 unsigned char *alpn;
3065
3066 if (protos_len == 0 || protos == NULL) {
3067 OPENSSL_free(ssl->ext.alpn);
3068 ssl->ext.alpn = NULL;
3069 ssl->ext.alpn_len = 0;
3070 return 0;
3071 }
3072 /* Not valid per RFC */
3073 if (!alpn_value_ok(protos, protos_len))
3074 return 1;
3075
3076 alpn = OPENSSL_memdup(protos, protos_len);
3077 if (alpn == NULL) {
3078 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3079 return 1;
3080 }
3081 OPENSSL_free(ssl->ext.alpn);
3082 ssl->ext.alpn = alpn;
3083 ssl->ext.alpn_len = protos_len;
3084
3085 return 0;
3086}
3087
3088/*
3089 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3090 * called during ClientHello processing in order to select an ALPN protocol
3091 * from the client's list of offered protocols.
3092 */
3093void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3094 SSL_CTX_alpn_select_cb_func cb,
3095 void *arg)
3096{
3097 ctx->ext.alpn_select_cb = cb;
3098 ctx->ext.alpn_select_cb_arg = arg;
3099}
3100
3101/*
3102 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3103 * On return it sets |*data| to point to |*len| bytes of protocol name
3104 * (not including the leading length-prefix byte). If the server didn't
3105 * respond with a negotiated protocol then |*len| will be zero.
3106 */
3107void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3108 unsigned int *len)
3109{
3110 *data = ssl->s3.alpn_selected;
3111 if (*data == NULL)
3112 *len = 0;
3113 else
3114 *len = (unsigned int)ssl->s3.alpn_selected_len;
3115}
3116
3117int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3118 const char *label, size_t llen,
3119 const unsigned char *context, size_t contextlen,
3120 int use_context)
3121{
3122 if (s->session == NULL
3123 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3124 return -1;
3125
3126 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3127 llen, context,
3128 contextlen, use_context);
3129}
3130
3131int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3132 const char *label, size_t llen,
3133 const unsigned char *context,
3134 size_t contextlen)
3135{
3136 if (s->version != TLS1_3_VERSION)
3137 return 0;
3138
3139 return tls13_export_keying_material_early(s, out, olen, label, llen,
3140 context, contextlen);
3141}
3142
3143static unsigned long ssl_session_hash(const SSL_SESSION *a)
3144{
3145 const unsigned char *session_id = a->session_id;
3146 unsigned long l;
3147 unsigned char tmp_storage[4];
3148
3149 if (a->session_id_length < sizeof(tmp_storage)) {
3150 memset(tmp_storage, 0, sizeof(tmp_storage));
3151 memcpy(tmp_storage, a->session_id, a->session_id_length);
3152 session_id = tmp_storage;
3153 }
3154
3155 l = (unsigned long)
3156 ((unsigned long)session_id[0]) |
3157 ((unsigned long)session_id[1] << 8L) |
3158 ((unsigned long)session_id[2] << 16L) |
3159 ((unsigned long)session_id[3] << 24L);
3160 return l;
3161}
3162
3163/*
3164 * NB: If this function (or indeed the hash function which uses a sort of
3165 * coarser function than this one) is changed, ensure
3166 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3167 * being able to construct an SSL_SESSION that will collide with any existing
3168 * session with a matching session ID.
3169 */
3170static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3171{
3172 if (a->ssl_version != b->ssl_version)
3173 return 1;
3174 if (a->session_id_length != b->session_id_length)
3175 return 1;
3176 return memcmp(a->session_id, b->session_id, a->session_id_length);
3177}
3178
3179/*
3180 * These wrapper functions should remain rather than redeclaring
3181 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3182 * variable. The reason is that the functions aren't static, they're exposed
3183 * via ssl.h.
3184 */
3185
3186SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3187 const SSL_METHOD *meth)
3188{
3189 SSL_CTX *ret = NULL;
3190
3191 if (meth == NULL) {
3192 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3193 return NULL;
3194 }
3195
3196 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3197 return NULL;
3198
3199 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3200 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3201 goto err;
3202 }
3203 ret = OPENSSL_zalloc(sizeof(*ret));
3204 if (ret == NULL)
3205 goto err;
3206
3207 /* Init the reference counting before any call to SSL_CTX_free */
3208 ret->references = 1;
3209 ret->lock = CRYPTO_THREAD_lock_new();
3210 if (ret->lock == NULL) {
3211 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3212 OPENSSL_free(ret);
3213 return NULL;
3214 }
3215
3216#ifdef TSAN_REQUIRES_LOCKING
3217 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3218 if (ret->tsan_lock == NULL) {
3219 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3220 goto err;
3221 }
3222#endif
3223
3224 ret->libctx = libctx;
3225 if (propq != NULL) {
3226 ret->propq = OPENSSL_strdup(propq);
3227 if (ret->propq == NULL)
3228 goto err;
3229 }
3230
3231 ret->method = meth;
3232 ret->min_proto_version = 0;
3233 ret->max_proto_version = 0;
3234 ret->mode = SSL_MODE_AUTO_RETRY;
3235 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3236 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3237 /* We take the system default. */
3238 ret->session_timeout = meth->get_timeout();
3239 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3240 ret->verify_mode = SSL_VERIFY_NONE;
3241 if ((ret->cert = ssl_cert_new()) == NULL)
3242 goto err;
3243
3244 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3245 if (ret->sessions == NULL)
3246 goto err;
3247 ret->cert_store = X509_STORE_new();
3248 if (ret->cert_store == NULL)
3249 goto err;
3250#ifndef OPENSSL_NO_CT
3251 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3252 if (ret->ctlog_store == NULL)
3253 goto err;
3254#endif
3255
3256 /* initialize cipher/digest methods table */
3257 if (!ssl_load_ciphers(ret))
3258 goto err2;
3259 /* initialise sig algs */
3260 if (!ssl_setup_sig_algs(ret))
3261 goto err2;
3262
3263
3264 if (!ssl_load_groups(ret))
3265 goto err2;
3266
3267 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3268 goto err;
3269
3270 if (!ssl_create_cipher_list(ret,
3271 ret->tls13_ciphersuites,
3272 &ret->cipher_list, &ret->cipher_list_by_id,
3273 OSSL_default_cipher_list(), ret->cert)
3274 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3275 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3276 goto err2;
3277 }
3278
3279 ret->param = X509_VERIFY_PARAM_new();
3280 if (ret->param == NULL)
3281 goto err;
3282
3283 /*
3284 * If these aren't available from the provider we'll get NULL returns.
3285 * That's fine but will cause errors later if SSLv3 is negotiated
3286 */
3287 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3288 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3289
3290 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3291 goto err;
3292
3293 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3294 goto err;
3295
3296 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3297 goto err;
3298
3299 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3300 goto err;
3301
3302 /* No compression for DTLS */
3303 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3304 ret->comp_methods = SSL_COMP_get_compression_methods();
3305
3306 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3307 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3308
3309 /* Setup RFC5077 ticket keys */
3310 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3311 sizeof(ret->ext.tick_key_name), 0) <= 0)
3312 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3313 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3314 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3315 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3316 ret->options |= SSL_OP_NO_TICKET;
3317
3318 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3319 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3320 goto err;
3321
3322#ifndef OPENSSL_NO_SRP
3323 if (!ssl_ctx_srp_ctx_init_intern(ret))
3324 goto err;
3325#endif
3326#ifndef OPENSSL_NO_ENGINE
3327# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3328# define eng_strx(x) #x
3329# define eng_str(x) eng_strx(x)
3330 /* Use specific client engine automatically... ignore errors */
3331 {
3332 ENGINE *eng;
3333 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3334 if (!eng) {
3335 ERR_clear_error();
3336 ENGINE_load_builtin_engines();
3337 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3338 }
3339 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3340 ERR_clear_error();
3341 }
3342# endif
3343#endif
3344 /*
3345 * Disable compression by default to prevent CRIME. Applications can
3346 * re-enable compression by configuring
3347 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3348 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3349 * middlebox compatibility by default. This may be disabled by default in
3350 * a later OpenSSL version.
3351 */
3352 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3353
3354 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3355
3356 /*
3357 * We cannot usefully set a default max_early_data here (which gets
3358 * propagated in SSL_new(), for the following reason: setting the
3359 * SSL field causes tls_construct_stoc_early_data() to tell the
3360 * client that early data will be accepted when constructing a TLS 1.3
3361 * session ticket, and the client will accordingly send us early data
3362 * when using that ticket (if the client has early data to send).
3363 * However, in order for the early data to actually be consumed by
3364 * the application, the application must also have calls to
3365 * SSL_read_early_data(); otherwise we'll just skip past the early data
3366 * and ignore it. So, since the application must add calls to
3367 * SSL_read_early_data(), we also require them to add
3368 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3369 * eliminating the bandwidth-wasting early data in the case described
3370 * above.
3371 */
3372 ret->max_early_data = 0;
3373
3374 /*
3375 * Default recv_max_early_data is a fully loaded single record. Could be
3376 * split across multiple records in practice. We set this differently to
3377 * max_early_data so that, in the default case, we do not advertise any
3378 * support for early_data, but if a client were to send us some (e.g.
3379 * because of an old, stale ticket) then we will tolerate it and skip over
3380 * it.
3381 */
3382 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3383
3384 /* By default we send two session tickets automatically in TLSv1.3 */
3385 ret->num_tickets = 2;
3386
3387 ssl_ctx_system_config(ret);
3388
3389 return ret;
3390 err:
3391 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3392 err2:
3393 SSL_CTX_free(ret);
3394 return NULL;
3395}
3396
3397SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3398{
3399 return SSL_CTX_new_ex(NULL, NULL, meth);
3400}
3401
3402int SSL_CTX_up_ref(SSL_CTX *ctx)
3403{
3404 int i;
3405
3406 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3407 return 0;
3408
3409 REF_PRINT_COUNT("SSL_CTX", ctx);
3410 REF_ASSERT_ISNT(i < 2);
3411 return ((i > 1) ? 1 : 0);
3412}
3413
3414void SSL_CTX_free(SSL_CTX *a)
3415{
3416 int i;
3417 size_t j;
3418
3419 if (a == NULL)
3420 return;
3421
3422 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3423 REF_PRINT_COUNT("SSL_CTX", a);
3424 if (i > 0)
3425 return;
3426 REF_ASSERT_ISNT(i < 0);
3427
3428 X509_VERIFY_PARAM_free(a->param);
3429 dane_ctx_final(&a->dane);
3430
3431 /*
3432 * Free internal session cache. However: the remove_cb() may reference
3433 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3434 * after the sessions were flushed.
3435 * As the ex_data handling routines might also touch the session cache,
3436 * the most secure solution seems to be: empty (flush) the cache, then
3437 * free ex_data, then finally free the cache.
3438 * (See ticket [openssl.org #212].)
3439 */
3440 if (a->sessions != NULL)
3441 SSL_CTX_flush_sessions(a, 0);
3442
3443 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3444 lh_SSL_SESSION_free(a->sessions);
3445 X509_STORE_free(a->cert_store);
3446#ifndef OPENSSL_NO_CT
3447 CTLOG_STORE_free(a->ctlog_store);
3448#endif
3449 sk_SSL_CIPHER_free(a->cipher_list);
3450 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3451 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3452 ssl_cert_free(a->cert);
3453 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3454 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3455 sk_X509_pop_free(a->extra_certs, X509_free);
3456 a->comp_methods = NULL;
3457#ifndef OPENSSL_NO_SRTP
3458 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3459#endif
3460#ifndef OPENSSL_NO_SRP
3461 ssl_ctx_srp_ctx_free_intern(a);
3462#endif
3463#ifndef OPENSSL_NO_ENGINE
3464 tls_engine_finish(a->client_cert_engine);
3465#endif
3466
3467 OPENSSL_free(a->ext.ecpointformats);
3468 OPENSSL_free(a->ext.supportedgroups);
3469 OPENSSL_free(a->ext.supported_groups_default);
3470 OPENSSL_free(a->ext.alpn);
3471 OPENSSL_secure_free(a->ext.secure);
3472
3473 ssl_evp_md_free(a->md5);
3474 ssl_evp_md_free(a->sha1);
3475
3476 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3477 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3478 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3479 ssl_evp_md_free(a->ssl_digest_methods[j]);
3480 for (j = 0; j < a->group_list_len; j++) {
3481 OPENSSL_free(a->group_list[j].tlsname);
3482 OPENSSL_free(a->group_list[j].realname);
3483 OPENSSL_free(a->group_list[j].algorithm);
3484 }
3485 OPENSSL_free(a->group_list);
3486
3487 OPENSSL_free(a->sigalg_lookup_cache);
3488
3489 CRYPTO_THREAD_lock_free(a->lock);
3490#ifdef TSAN_REQUIRES_LOCKING
3491 CRYPTO_THREAD_lock_free(a->tsan_lock);
3492#endif
3493
3494 OPENSSL_free(a->propq);
3495
3496 OPENSSL_free(a);
3497}
3498
3499void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3500{
3501 ctx->default_passwd_callback = cb;
3502}
3503
3504void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3505{
3506 ctx->default_passwd_callback_userdata = u;
3507}
3508
3509pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3510{
3511 return ctx->default_passwd_callback;
3512}
3513
3514void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3515{
3516 return ctx->default_passwd_callback_userdata;
3517}
3518
3519void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3520{
3521 s->default_passwd_callback = cb;
3522}
3523
3524void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3525{
3526 s->default_passwd_callback_userdata = u;
3527}
3528
3529pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3530{
3531 return s->default_passwd_callback;
3532}
3533
3534void *SSL_get_default_passwd_cb_userdata(SSL *s)
3535{
3536 return s->default_passwd_callback_userdata;
3537}
3538
3539void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3540 int (*cb) (X509_STORE_CTX *, void *),
3541 void *arg)
3542{
3543 ctx->app_verify_callback = cb;
3544 ctx->app_verify_arg = arg;
3545}
3546
3547void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3548 int (*cb) (int, X509_STORE_CTX *))
3549{
3550 ctx->verify_mode = mode;
3551 ctx->default_verify_callback = cb;
3552}
3553
3554void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3555{
3556 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3557}
3558
3559void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3560{
3561 ssl_cert_set_cert_cb(c->cert, cb, arg);
3562}
3563
3564void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3565{
3566 ssl_cert_set_cert_cb(s->cert, cb, arg);
3567}
3568
3569void ssl_set_masks(SSL *s)
3570{
3571 CERT *c = s->cert;
3572 uint32_t *pvalid = s->s3.tmp.valid_flags;
3573 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3574 unsigned long mask_k, mask_a;
3575 int have_ecc_cert, ecdsa_ok;
3576
3577 if (c == NULL)
3578 return;
3579
3580 dh_tmp = (c->dh_tmp != NULL
3581 || c->dh_tmp_cb != NULL
3582 || c->dh_tmp_auto);
3583
3584 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3585 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3586 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3587 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3588 mask_k = 0;
3589 mask_a = 0;
3590
3591 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3592 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3593
3594#ifndef OPENSSL_NO_GOST
3595 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3596 mask_k |= SSL_kGOST | SSL_kGOST18;
3597 mask_a |= SSL_aGOST12;
3598 }
3599 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3600 mask_k |= SSL_kGOST | SSL_kGOST18;
3601 mask_a |= SSL_aGOST12;
3602 }
3603 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3604 mask_k |= SSL_kGOST;
3605 mask_a |= SSL_aGOST01;
3606 }
3607#endif
3608
3609 if (rsa_enc)
3610 mask_k |= SSL_kRSA;
3611
3612 if (dh_tmp)
3613 mask_k |= SSL_kDHE;
3614
3615 /*
3616 * If we only have an RSA-PSS certificate allow RSA authentication
3617 * if TLS 1.2 and peer supports it.
3618 */
3619
3620 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3621 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3622 && TLS1_get_version(s) == TLS1_2_VERSION))
3623 mask_a |= SSL_aRSA;
3624
3625 if (dsa_sign) {
3626 mask_a |= SSL_aDSS;
3627 }
3628
3629 mask_a |= SSL_aNULL;
3630
3631 /*
3632 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3633 * depending on the key usage extension.
3634 */
3635 if (have_ecc_cert) {
3636 uint32_t ex_kusage;
3637 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3638 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3639 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3640 ecdsa_ok = 0;
3641 if (ecdsa_ok)
3642 mask_a |= SSL_aECDSA;
3643 }
3644 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3645 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3646 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3647 && TLS1_get_version(s) == TLS1_2_VERSION)
3648 mask_a |= SSL_aECDSA;
3649
3650 /* Allow Ed448 for TLS 1.2 if peer supports it */
3651 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3652 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3653 && TLS1_get_version(s) == TLS1_2_VERSION)
3654 mask_a |= SSL_aECDSA;
3655
3656 mask_k |= SSL_kECDHE;
3657
3658#ifndef OPENSSL_NO_PSK
3659 mask_k |= SSL_kPSK;
3660 mask_a |= SSL_aPSK;
3661 if (mask_k & SSL_kRSA)
3662 mask_k |= SSL_kRSAPSK;
3663 if (mask_k & SSL_kDHE)
3664 mask_k |= SSL_kDHEPSK;
3665 if (mask_k & SSL_kECDHE)
3666 mask_k |= SSL_kECDHEPSK;
3667#endif
3668
3669 s->s3.tmp.mask_k = mask_k;
3670 s->s3.tmp.mask_a = mask_a;
3671}
3672
3673int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3674{
3675 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3676 /* key usage, if present, must allow signing */
3677 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3678 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3679 return 0;
3680 }
3681 }
3682 return 1; /* all checks are ok */
3683}
3684
3685int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3686 size_t *serverinfo_length)
3687{
3688 CERT_PKEY *cpk = s->s3.tmp.cert;
3689 *serverinfo_length = 0;
3690
3691 if (cpk == NULL || cpk->serverinfo == NULL)
3692 return 0;
3693
3694 *serverinfo = cpk->serverinfo;
3695 *serverinfo_length = cpk->serverinfo_length;
3696 return 1;
3697}
3698
3699void ssl_update_cache(SSL *s, int mode)
3700{
3701 int i;
3702
3703 /*
3704 * If the session_id_length is 0, we are not supposed to cache it, and it
3705 * would be rather hard to do anyway :-)
3706 */
3707 if (s->session->session_id_length == 0)
3708 return;
3709
3710 /*
3711 * If sid_ctx_length is 0 there is no specific application context
3712 * associated with this session, so when we try to resume it and
3713 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3714 * indication that this is actually a session for the proper application
3715 * context, and the *handshake* will fail, not just the resumption attempt.
3716 * Do not cache (on the server) these sessions that are not resumable
3717 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3718 */
3719 if (s->server && s->session->sid_ctx_length == 0
3720 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3721 return;
3722
3723 i = s->session_ctx->session_cache_mode;
3724 if ((i & mode) != 0
3725 && (!s->hit || SSL_IS_TLS13(s))) {
3726 /*
3727 * Add the session to the internal cache. In server side TLSv1.3 we
3728 * normally don't do this because by default it's a full stateless ticket
3729 * with only a dummy session id so there is no reason to cache it,
3730 * unless:
3731 * - we are doing early_data, in which case we cache so that we can
3732 * detect replays
3733 * - the application has set a remove_session_cb so needs to know about
3734 * session timeout events
3735 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3736 */
3737 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3738 && (!SSL_IS_TLS13(s)
3739 || !s->server
3740 || (s->max_early_data > 0
3741 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3742 || s->session_ctx->remove_session_cb != NULL
3743 || (s->options & SSL_OP_NO_TICKET) != 0))
3744 SSL_CTX_add_session(s->session_ctx, s->session);
3745
3746 /*
3747 * Add the session to the external cache. We do this even in server side
3748 * TLSv1.3 without early data because some applications just want to
3749 * know about the creation of a session and aren't doing a full cache.
3750 */
3751 if (s->session_ctx->new_session_cb != NULL) {
3752 SSL_SESSION_up_ref(s->session);
3753 if (!s->session_ctx->new_session_cb(s, s->session))
3754 SSL_SESSION_free(s->session);
3755 }
3756 }
3757
3758 /* auto flush every 255 connections */
3759 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3760 TSAN_QUALIFIER int *stat;
3761
3762 if (mode & SSL_SESS_CACHE_CLIENT)
3763 stat = &s->session_ctx->stats.sess_connect_good;
3764 else
3765 stat = &s->session_ctx->stats.sess_accept_good;
3766 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
3767 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3768 }
3769}
3770
3771const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3772{
3773 return ctx->method;
3774}
3775
3776const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3777{
3778 return s->method;
3779}
3780
3781int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3782{
3783 int ret = 1;
3784
3785 if (s->method != meth) {
3786 const SSL_METHOD *sm = s->method;
3787 int (*hf) (SSL *) = s->handshake_func;
3788
3789 if (sm->version == meth->version)
3790 s->method = meth;
3791 else {
3792 sm->ssl_free(s);
3793 s->method = meth;
3794 ret = s->method->ssl_new(s);
3795 }
3796
3797 if (hf == sm->ssl_connect)
3798 s->handshake_func = meth->ssl_connect;
3799 else if (hf == sm->ssl_accept)
3800 s->handshake_func = meth->ssl_accept;
3801 }
3802 return ret;
3803}
3804
3805int SSL_get_error(const SSL *s, int i)
3806{
3807 int reason;
3808 unsigned long l;
3809 BIO *bio;
3810
3811 if (i > 0)
3812 return SSL_ERROR_NONE;
3813
3814 /*
3815 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3816 * where we do encode the error
3817 */
3818 if ((l = ERR_peek_error()) != 0) {
3819 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3820 return SSL_ERROR_SYSCALL;
3821 else
3822 return SSL_ERROR_SSL;
3823 }
3824
3825 if (SSL_want_read(s)) {
3826 bio = SSL_get_rbio(s);
3827 if (BIO_should_read(bio))
3828 return SSL_ERROR_WANT_READ;
3829 else if (BIO_should_write(bio))
3830 /*
3831 * This one doesn't make too much sense ... We never try to write
3832 * to the rbio, and an application program where rbio and wbio
3833 * are separate couldn't even know what it should wait for.
3834 * However if we ever set s->rwstate incorrectly (so that we have
3835 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3836 * wbio *are* the same, this test works around that bug; so it
3837 * might be safer to keep it.
3838 */
3839 return SSL_ERROR_WANT_WRITE;
3840 else if (BIO_should_io_special(bio)) {
3841 reason = BIO_get_retry_reason(bio);
3842 if (reason == BIO_RR_CONNECT)
3843 return SSL_ERROR_WANT_CONNECT;
3844 else if (reason == BIO_RR_ACCEPT)
3845 return SSL_ERROR_WANT_ACCEPT;
3846 else
3847 return SSL_ERROR_SYSCALL; /* unknown */
3848 }
3849 }
3850
3851 if (SSL_want_write(s)) {
3852 /* Access wbio directly - in order to use the buffered bio if present */
3853 bio = s->wbio;
3854 if (BIO_should_write(bio))
3855 return SSL_ERROR_WANT_WRITE;
3856 else if (BIO_should_read(bio))
3857 /*
3858 * See above (SSL_want_read(s) with BIO_should_write(bio))
3859 */
3860 return SSL_ERROR_WANT_READ;
3861 else if (BIO_should_io_special(bio)) {
3862 reason = BIO_get_retry_reason(bio);
3863 if (reason == BIO_RR_CONNECT)
3864 return SSL_ERROR_WANT_CONNECT;
3865 else if (reason == BIO_RR_ACCEPT)
3866 return SSL_ERROR_WANT_ACCEPT;
3867 else
3868 return SSL_ERROR_SYSCALL;
3869 }
3870 }
3871 if (SSL_want_x509_lookup(s))
3872 return SSL_ERROR_WANT_X509_LOOKUP;
3873 if (SSL_want_retry_verify(s))
3874 return SSL_ERROR_WANT_RETRY_VERIFY;
3875 if (SSL_want_async(s))
3876 return SSL_ERROR_WANT_ASYNC;
3877 if (SSL_want_async_job(s))
3878 return SSL_ERROR_WANT_ASYNC_JOB;
3879 if (SSL_want_client_hello_cb(s))
3880 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3881
3882 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3883 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3884 return SSL_ERROR_ZERO_RETURN;
3885
3886 return SSL_ERROR_SYSCALL;
3887}
3888
3889static int ssl_do_handshake_intern(void *vargs)
3890{
3891 struct ssl_async_args *args;
3892 SSL *s;
3893
3894 args = (struct ssl_async_args *)vargs;
3895 s = args->s;
3896
3897 return s->handshake_func(s);
3898}
3899
3900int SSL_do_handshake(SSL *s)
3901{
3902 int ret = 1;
3903
3904 if (s->handshake_func == NULL) {
3905 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
3906 return -1;
3907 }
3908
3909 ossl_statem_check_finish_init(s, -1);
3910
3911 s->method->ssl_renegotiate_check(s, 0);
3912
3913 if (SSL_in_init(s) || SSL_in_before(s)) {
3914 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3915 struct ssl_async_args args;
3916
3917 args.s = s;
3918
3919 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3920 } else {
3921 ret = s->handshake_func(s);
3922 }
3923 }
3924 return ret;
3925}
3926
3927void SSL_set_accept_state(SSL *s)
3928{
3929 s->server = 1;
3930 s->shutdown = 0;
3931 ossl_statem_clear(s);
3932 s->handshake_func = s->method->ssl_accept;
3933 clear_ciphers(s);
3934}
3935
3936void SSL_set_connect_state(SSL *s)
3937{
3938 s->server = 0;
3939 s->shutdown = 0;
3940 ossl_statem_clear(s);
3941 s->handshake_func = s->method->ssl_connect;
3942 clear_ciphers(s);
3943}
3944
3945int ssl_undefined_function(SSL *s)
3946{
3947 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3948 return 0;
3949}
3950
3951int ssl_undefined_void_function(void)
3952{
3953 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3954 return 0;
3955}
3956
3957int ssl_undefined_const_function(const SSL *s)
3958{
3959 return 0;
3960}
3961
3962const SSL_METHOD *ssl_bad_method(int ver)
3963{
3964 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3965 return NULL;
3966}
3967
3968const char *ssl_protocol_to_string(int version)
3969{
3970 switch(version)
3971 {
3972 case TLS1_3_VERSION:
3973 return "TLSv1.3";
3974
3975 case TLS1_2_VERSION:
3976 return "TLSv1.2";
3977
3978 case TLS1_1_VERSION:
3979 return "TLSv1.1";
3980
3981 case TLS1_VERSION:
3982 return "TLSv1";
3983
3984 case SSL3_VERSION:
3985 return "SSLv3";
3986
3987 case DTLS1_BAD_VER:
3988 return "DTLSv0.9";
3989
3990 case DTLS1_VERSION:
3991 return "DTLSv1";
3992
3993 case DTLS1_2_VERSION:
3994 return "DTLSv1.2";
3995
3996 default:
3997 return "unknown";
3998 }
3999}
4000
4001const char *SSL_get_version(const SSL *s)
4002{
4003 return ssl_protocol_to_string(s->version);
4004}
4005
4006static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4007{
4008 STACK_OF(X509_NAME) *sk;
4009 X509_NAME *xn;
4010 int i;
4011
4012 if (src == NULL) {
4013 *dst = NULL;
4014 return 1;
4015 }
4016
4017 if ((sk = sk_X509_NAME_new_null()) == NULL)
4018 return 0;
4019 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4020 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4021 if (xn == NULL) {
4022 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4023 return 0;
4024 }
4025 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4026 X509_NAME_free(xn);
4027 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4028 return 0;
4029 }
4030 }
4031 *dst = sk;
4032
4033 return 1;
4034}
4035
4036SSL *SSL_dup(SSL *s)
4037{
4038 SSL *ret;
4039 int i;
4040
4041 /* If we're not quiescent, just up_ref! */
4042 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4043 CRYPTO_UP_REF(&s->references, &i, s->lock);
4044 return s;
4045 }
4046
4047 /*
4048 * Otherwise, copy configuration state, and session if set.
4049 */
4050 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4051 return NULL;
4052
4053 if (s->session != NULL) {
4054 /*
4055 * Arranges to share the same session via up_ref. This "copies"
4056 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4057 */
4058 if (!SSL_copy_session_id(ret, s))
4059 goto err;
4060 } else {
4061 /*
4062 * No session has been established yet, so we have to expect that
4063 * s->cert or ret->cert will be changed later -- they should not both
4064 * point to the same object, and thus we can't use
4065 * SSL_copy_session_id.
4066 */
4067 if (!SSL_set_ssl_method(ret, s->method))
4068 goto err;
4069
4070 if (s->cert != NULL) {
4071 ssl_cert_free(ret->cert);
4072 ret->cert = ssl_cert_dup(s->cert);
4073 if (ret->cert == NULL)
4074 goto err;
4075 }
4076
4077 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4078 (int)s->sid_ctx_length))
4079 goto err;
4080 }
4081
4082 if (!ssl_dane_dup(ret, s))
4083 goto err;
4084 ret->version = s->version;
4085 ret->options = s->options;
4086 ret->min_proto_version = s->min_proto_version;
4087 ret->max_proto_version = s->max_proto_version;
4088 ret->mode = s->mode;
4089 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4090 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4091 ret->msg_callback = s->msg_callback;
4092 ret->msg_callback_arg = s->msg_callback_arg;
4093 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4094 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4095 ret->generate_session_id = s->generate_session_id;
4096
4097 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4098
4099 /* copy app data, a little dangerous perhaps */
4100 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4101 goto err;
4102
4103 ret->server = s->server;
4104 if (s->handshake_func) {
4105 if (s->server)
4106 SSL_set_accept_state(ret);
4107 else
4108 SSL_set_connect_state(ret);
4109 }
4110 ret->shutdown = s->shutdown;
4111 ret->hit = s->hit;
4112
4113 ret->default_passwd_callback = s->default_passwd_callback;
4114 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4115
4116 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4117
4118 /* dup the cipher_list and cipher_list_by_id stacks */
4119 if (s->cipher_list != NULL) {
4120 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4121 goto err;
4122 }
4123 if (s->cipher_list_by_id != NULL)
4124 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4125 == NULL)
4126 goto err;
4127
4128 /* Dup the client_CA list */
4129 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4130 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4131 goto err;
4132
4133 return ret;
4134
4135 err:
4136 SSL_free(ret);
4137 return NULL;
4138}
4139
4140void ssl_clear_cipher_ctx(SSL *s)
4141{
4142 if (s->enc_read_ctx != NULL) {
4143 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4144 s->enc_read_ctx = NULL;
4145 }
4146 if (s->enc_write_ctx != NULL) {
4147 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4148 s->enc_write_ctx = NULL;
4149 }
4150#ifndef OPENSSL_NO_COMP
4151 COMP_CTX_free(s->expand);
4152 s->expand = NULL;
4153 COMP_CTX_free(s->compress);
4154 s->compress = NULL;
4155#endif
4156}
4157
4158X509 *SSL_get_certificate(const SSL *s)
4159{
4160 if (s->cert != NULL)
4161 return s->cert->key->x509;
4162 else
4163 return NULL;
4164}
4165
4166EVP_PKEY *SSL_get_privatekey(const SSL *s)
4167{
4168 if (s->cert != NULL)
4169 return s->cert->key->privatekey;
4170 else
4171 return NULL;
4172}
4173
4174X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4175{
4176 if (ctx->cert != NULL)
4177 return ctx->cert->key->x509;
4178 else
4179 return NULL;
4180}
4181
4182EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4183{
4184 if (ctx->cert != NULL)
4185 return ctx->cert->key->privatekey;
4186 else
4187 return NULL;
4188}
4189
4190const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4191{
4192 if ((s->session != NULL) && (s->session->cipher != NULL))
4193 return s->session->cipher;
4194 return NULL;
4195}
4196
4197const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4198{
4199 return s->s3.tmp.new_cipher;
4200}
4201
4202const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4203{
4204#ifndef OPENSSL_NO_COMP
4205 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4206#else
4207 return NULL;
4208#endif
4209}
4210
4211const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4212{
4213#ifndef OPENSSL_NO_COMP
4214 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4215#else
4216 return NULL;
4217#endif
4218}
4219
4220int ssl_init_wbio_buffer(SSL *s)
4221{
4222 BIO *bbio;
4223
4224 if (s->bbio != NULL) {
4225 /* Already buffered. */
4226 return 1;
4227 }
4228
4229 bbio = BIO_new(BIO_f_buffer());
4230 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4231 BIO_free(bbio);
4232 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4233 return 0;
4234 }
4235 s->bbio = bbio;
4236 s->wbio = BIO_push(bbio, s->wbio);
4237
4238 return 1;
4239}
4240
4241int ssl_free_wbio_buffer(SSL *s)
4242{
4243 /* callers ensure s is never null */
4244 if (s->bbio == NULL)
4245 return 1;
4246
4247 s->wbio = BIO_pop(s->wbio);
4248 BIO_free(s->bbio);
4249 s->bbio = NULL;
4250
4251 return 1;
4252}
4253
4254void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4255{
4256 ctx->quiet_shutdown = mode;
4257}
4258
4259int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4260{
4261 return ctx->quiet_shutdown;
4262}
4263
4264void SSL_set_quiet_shutdown(SSL *s, int mode)
4265{
4266 s->quiet_shutdown = mode;
4267}
4268
4269int SSL_get_quiet_shutdown(const SSL *s)
4270{
4271 return s->quiet_shutdown;
4272}
4273
4274void SSL_set_shutdown(SSL *s, int mode)
4275{
4276 s->shutdown = mode;
4277}
4278
4279int SSL_get_shutdown(const SSL *s)
4280{
4281 return s->shutdown;
4282}
4283
4284int SSL_version(const SSL *s)
4285{
4286 return s->version;
4287}
4288
4289int SSL_client_version(const SSL *s)
4290{
4291 return s->client_version;
4292}
4293
4294SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4295{
4296 return ssl->ctx;
4297}
4298
4299SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4300{
4301 CERT *new_cert;
4302 if (ssl->ctx == ctx)
4303 return ssl->ctx;
4304 if (ctx == NULL)
4305 ctx = ssl->session_ctx;
4306 new_cert = ssl_cert_dup(ctx->cert);
4307 if (new_cert == NULL) {
4308 return NULL;
4309 }
4310
4311 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4312 ssl_cert_free(new_cert);
4313 return NULL;
4314 }
4315
4316 ssl_cert_free(ssl->cert);
4317 ssl->cert = new_cert;
4318
4319 /*
4320 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4321 * so setter APIs must prevent invalid lengths from entering the system.
4322 */
4323 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4324 return NULL;
4325
4326 /*
4327 * If the session ID context matches that of the parent SSL_CTX,
4328 * inherit it from the new SSL_CTX as well. If however the context does
4329 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4330 * leave it unchanged.
4331 */
4332 if ((ssl->ctx != NULL) &&
4333 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4334 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4335 ssl->sid_ctx_length = ctx->sid_ctx_length;
4336 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4337 }
4338
4339 SSL_CTX_up_ref(ctx);
4340 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4341 ssl->ctx = ctx;
4342
4343 return ssl->ctx;
4344}
4345
4346int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4347{
4348 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4349 ctx->propq);
4350}
4351
4352int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4353{
4354 X509_LOOKUP *lookup;
4355
4356 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4357 if (lookup == NULL)
4358 return 0;
4359
4360 /* We ignore errors, in case the directory doesn't exist */
4361 ERR_set_mark();
4362
4363 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4364
4365 ERR_pop_to_mark();
4366
4367 return 1;
4368}
4369
4370int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4371{
4372 X509_LOOKUP *lookup;
4373
4374 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4375 if (lookup == NULL)
4376 return 0;
4377
4378 /* We ignore errors, in case the file doesn't exist */
4379 ERR_set_mark();
4380
4381 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4382 ctx->propq);
4383
4384 ERR_pop_to_mark();
4385
4386 return 1;
4387}
4388
4389int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4390{
4391 X509_LOOKUP *lookup;
4392
4393 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4394 if (lookup == NULL)
4395 return 0;
4396
4397 /* We ignore errors, in case the directory doesn't exist */
4398 ERR_set_mark();
4399
4400 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4401
4402 ERR_pop_to_mark();
4403
4404 return 1;
4405}
4406
4407int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4408{
4409 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4410 ctx->propq);
4411}
4412
4413int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4414{
4415 return X509_STORE_load_path(ctx->cert_store, CApath);
4416}
4417
4418int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4419{
4420 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
4421 ctx->propq);
4422}
4423
4424int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4425 const char *CApath)
4426{
4427 if (CAfile == NULL && CApath == NULL)
4428 return 0;
4429 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4430 return 0;
4431 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4432 return 0;
4433 return 1;
4434}
4435
4436void SSL_set_info_callback(SSL *ssl,
4437 void (*cb) (const SSL *ssl, int type, int val))
4438{
4439 ssl->info_callback = cb;
4440}
4441
4442/*
4443 * One compiler (Diab DCC) doesn't like argument names in returned function
4444 * pointer.
4445 */
4446void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4447 int /* type */ ,
4448 int /* val */ ) {
4449 return ssl->info_callback;
4450}
4451
4452void SSL_set_verify_result(SSL *ssl, long arg)
4453{
4454 ssl->verify_result = arg;
4455}
4456
4457long SSL_get_verify_result(const SSL *ssl)
4458{
4459 return ssl->verify_result;
4460}
4461
4462size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4463{
4464 if (outlen == 0)
4465 return sizeof(ssl->s3.client_random);
4466 if (outlen > sizeof(ssl->s3.client_random))
4467 outlen = sizeof(ssl->s3.client_random);
4468 memcpy(out, ssl->s3.client_random, outlen);
4469 return outlen;
4470}
4471
4472size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4473{
4474 if (outlen == 0)
4475 return sizeof(ssl->s3.server_random);
4476 if (outlen > sizeof(ssl->s3.server_random))
4477 outlen = sizeof(ssl->s3.server_random);
4478 memcpy(out, ssl->s3.server_random, outlen);
4479 return outlen;
4480}
4481
4482size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4483 unsigned char *out, size_t outlen)
4484{
4485 if (outlen == 0)
4486 return session->master_key_length;
4487 if (outlen > session->master_key_length)
4488 outlen = session->master_key_length;
4489 memcpy(out, session->master_key, outlen);
4490 return outlen;
4491}
4492
4493int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4494 size_t len)
4495{
4496 if (len > sizeof(sess->master_key))
4497 return 0;
4498
4499 memcpy(sess->master_key, in, len);
4500 sess->master_key_length = len;
4501 return 1;
4502}
4503
4504
4505int SSL_set_ex_data(SSL *s, int idx, void *arg)
4506{
4507 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4508}
4509
4510void *SSL_get_ex_data(const SSL *s, int idx)
4511{
4512 return CRYPTO_get_ex_data(&s->ex_data, idx);
4513}
4514
4515int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4516{
4517 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4518}
4519
4520void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4521{
4522 return CRYPTO_get_ex_data(&s->ex_data, idx);
4523}
4524
4525X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4526{
4527 return ctx->cert_store;
4528}
4529
4530void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4531{
4532 X509_STORE_free(ctx->cert_store);
4533 ctx->cert_store = store;
4534}
4535
4536void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4537{
4538 if (store != NULL)
4539 X509_STORE_up_ref(store);
4540 SSL_CTX_set_cert_store(ctx, store);
4541}
4542
4543int SSL_want(const SSL *s)
4544{
4545 return s->rwstate;
4546}
4547
4548#ifndef OPENSSL_NO_PSK
4549int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4550{
4551 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4552 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
4553 return 0;
4554 }
4555 OPENSSL_free(ctx->cert->psk_identity_hint);
4556 if (identity_hint != NULL) {
4557 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4558 if (ctx->cert->psk_identity_hint == NULL)
4559 return 0;
4560 } else
4561 ctx->cert->psk_identity_hint = NULL;
4562 return 1;
4563}
4564
4565int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4566{
4567 if (s == NULL)
4568 return 0;
4569
4570 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4571 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
4572 return 0;
4573 }
4574 OPENSSL_free(s->cert->psk_identity_hint);
4575 if (identity_hint != NULL) {
4576 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4577 if (s->cert->psk_identity_hint == NULL)
4578 return 0;
4579 } else
4580 s->cert->psk_identity_hint = NULL;
4581 return 1;
4582}
4583
4584const char *SSL_get_psk_identity_hint(const SSL *s)
4585{
4586 if (s == NULL || s->session == NULL)
4587 return NULL;
4588 return s->session->psk_identity_hint;
4589}
4590
4591const char *SSL_get_psk_identity(const SSL *s)
4592{
4593 if (s == NULL || s->session == NULL)
4594 return NULL;
4595 return s->session->psk_identity;
4596}
4597
4598void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4599{
4600 s->psk_client_callback = cb;
4601}
4602
4603void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4604{
4605 ctx->psk_client_callback = cb;
4606}
4607
4608void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4609{
4610 s->psk_server_callback = cb;
4611}
4612
4613void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4614{
4615 ctx->psk_server_callback = cb;
4616}
4617#endif
4618
4619void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4620{
4621 s->psk_find_session_cb = cb;
4622}
4623
4624void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4625 SSL_psk_find_session_cb_func cb)
4626{
4627 ctx->psk_find_session_cb = cb;
4628}
4629
4630void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4631{
4632 s->psk_use_session_cb = cb;
4633}
4634
4635void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4636 SSL_psk_use_session_cb_func cb)
4637{
4638 ctx->psk_use_session_cb = cb;
4639}
4640
4641void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4642 void (*cb) (int write_p, int version,
4643 int content_type, const void *buf,
4644 size_t len, SSL *ssl, void *arg))
4645{
4646 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4647}
4648
4649void SSL_set_msg_callback(SSL *ssl,
4650 void (*cb) (int write_p, int version,
4651 int content_type, const void *buf,
4652 size_t len, SSL *ssl, void *arg))
4653{
4654 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4655}
4656
4657void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4658 int (*cb) (SSL *ssl,
4659 int
4660 is_forward_secure))
4661{
4662 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4663 (void (*)(void))cb);
4664}
4665
4666void SSL_set_not_resumable_session_callback(SSL *ssl,
4667 int (*cb) (SSL *ssl,
4668 int is_forward_secure))
4669{
4670 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4671 (void (*)(void))cb);
4672}
4673
4674void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4675 size_t (*cb) (SSL *ssl, int type,
4676 size_t len, void *arg))
4677{
4678 ctx->record_padding_cb = cb;
4679}
4680
4681void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4682{
4683 ctx->record_padding_arg = arg;
4684}
4685
4686void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4687{
4688 return ctx->record_padding_arg;
4689}
4690
4691int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4692{
4693 /* block size of 0 or 1 is basically no padding */
4694 if (block_size == 1)
4695 ctx->block_padding = 0;
4696 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4697 ctx->block_padding = block_size;
4698 else
4699 return 0;
4700 return 1;
4701}
4702
4703int SSL_set_record_padding_callback(SSL *ssl,
4704 size_t (*cb) (SSL *ssl, int type,
4705 size_t len, void *arg))
4706{
4707 BIO *b;
4708
4709 b = SSL_get_wbio(ssl);
4710 if (b == NULL || !BIO_get_ktls_send(b)) {
4711 ssl->record_padding_cb = cb;
4712 return 1;
4713 }
4714 return 0;
4715}
4716
4717void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4718{
4719 ssl->record_padding_arg = arg;
4720}
4721
4722void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4723{
4724 return ssl->record_padding_arg;
4725}
4726
4727int SSL_set_block_padding(SSL *ssl, size_t block_size)
4728{
4729 /* block size of 0 or 1 is basically no padding */
4730 if (block_size == 1)
4731 ssl->block_padding = 0;
4732 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4733 ssl->block_padding = block_size;
4734 else
4735 return 0;
4736 return 1;
4737}
4738
4739int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4740{
4741 s->num_tickets = num_tickets;
4742
4743 return 1;
4744}
4745
4746size_t SSL_get_num_tickets(const SSL *s)
4747{
4748 return s->num_tickets;
4749}
4750
4751int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4752{
4753 ctx->num_tickets = num_tickets;
4754
4755 return 1;
4756}
4757
4758size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4759{
4760 return ctx->num_tickets;
4761}
4762
4763/*
4764 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4765 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4766 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4767 * Returns the newly allocated ctx;
4768 */
4769
4770EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4771{
4772 ssl_clear_hash_ctx(hash);
4773 *hash = EVP_MD_CTX_new();
4774 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4775 EVP_MD_CTX_free(*hash);
4776 *hash = NULL;
4777 return NULL;
4778 }
4779 return *hash;
4780}
4781
4782void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4783{
4784
4785 EVP_MD_CTX_free(*hash);
4786 *hash = NULL;
4787}
4788
4789/* Retrieve handshake hashes */
4790int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4791 size_t *hashlen)
4792{
4793 EVP_MD_CTX *ctx = NULL;
4794 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4795 int hashleni = EVP_MD_CTX_get_size(hdgst);
4796 int ret = 0;
4797
4798 if (hashleni < 0 || (size_t)hashleni > outlen) {
4799 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4800 goto err;
4801 }
4802
4803 ctx = EVP_MD_CTX_new();
4804 if (ctx == NULL) {
4805 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4806 goto err;
4807 }
4808
4809 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4810 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4811 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
4812 goto err;
4813 }
4814
4815 *hashlen = hashleni;
4816
4817 ret = 1;
4818 err:
4819 EVP_MD_CTX_free(ctx);
4820 return ret;
4821}
4822
4823int SSL_session_reused(const SSL *s)
4824{
4825 return s->hit;
4826}
4827
4828int SSL_is_server(const SSL *s)
4829{
4830 return s->server;
4831}
4832
4833#ifndef OPENSSL_NO_DEPRECATED_1_1_0
4834void SSL_set_debug(SSL *s, int debug)
4835{
4836 /* Old function was do-nothing anyway... */
4837 (void)s;
4838 (void)debug;
4839}
4840#endif
4841
4842void SSL_set_security_level(SSL *s, int level)
4843{
4844 s->cert->sec_level = level;
4845}
4846
4847int SSL_get_security_level(const SSL *s)
4848{
4849 return s->cert->sec_level;
4850}
4851
4852void SSL_set_security_callback(SSL *s,
4853 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4854 int op, int bits, int nid,
4855 void *other, void *ex))
4856{
4857 s->cert->sec_cb = cb;
4858}
4859
4860int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4861 const SSL_CTX *ctx, int op,
4862 int bits, int nid, void *other,
4863 void *ex) {
4864 return s->cert->sec_cb;
4865}
4866
4867void SSL_set0_security_ex_data(SSL *s, void *ex)
4868{
4869 s->cert->sec_ex = ex;
4870}
4871
4872void *SSL_get0_security_ex_data(const SSL *s)
4873{
4874 return s->cert->sec_ex;
4875}
4876
4877void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4878{
4879 ctx->cert->sec_level = level;
4880}
4881
4882int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4883{
4884 return ctx->cert->sec_level;
4885}
4886
4887void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4888 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4889 int op, int bits, int nid,
4890 void *other, void *ex))
4891{
4892 ctx->cert->sec_cb = cb;
4893}
4894
4895int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4896 const SSL_CTX *ctx,
4897 int op, int bits,
4898 int nid,
4899 void *other,
4900 void *ex) {
4901 return ctx->cert->sec_cb;
4902}
4903
4904void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4905{
4906 ctx->cert->sec_ex = ex;
4907}
4908
4909void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4910{
4911 return ctx->cert->sec_ex;
4912}
4913
4914uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
4915{
4916 return ctx->options;
4917}
4918
4919uint64_t SSL_get_options(const SSL *s)
4920{
4921 return s->options;
4922}
4923
4924uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
4925{
4926 return ctx->options |= op;
4927}
4928
4929uint64_t SSL_set_options(SSL *s, uint64_t op)
4930{
4931 return s->options |= op;
4932}
4933
4934uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
4935{
4936 return ctx->options &= ~op;
4937}
4938
4939uint64_t SSL_clear_options(SSL *s, uint64_t op)
4940{
4941 return s->options &= ~op;
4942}
4943
4944STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4945{
4946 return s->verified_chain;
4947}
4948
4949IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4950
4951#ifndef OPENSSL_NO_CT
4952
4953/*
4954 * Moves SCTs from the |src| stack to the |dst| stack.
4955 * The source of each SCT will be set to |origin|.
4956 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4957 * the caller.
4958 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4959 */
4960static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4961 sct_source_t origin)
4962{
4963 int scts_moved = 0;
4964 SCT *sct = NULL;
4965
4966 if (*dst == NULL) {
4967 *dst = sk_SCT_new_null();
4968 if (*dst == NULL) {
4969 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
4970 goto err;
4971 }
4972 }
4973
4974 while ((sct = sk_SCT_pop(src)) != NULL) {
4975 if (SCT_set_source(sct, origin) != 1)
4976 goto err;
4977
4978 if (sk_SCT_push(*dst, sct) <= 0)
4979 goto err;
4980 scts_moved += 1;
4981 }
4982
4983 return scts_moved;
4984 err:
4985 if (sct != NULL)
4986 sk_SCT_push(src, sct); /* Put the SCT back */
4987 return -1;
4988}
4989
4990/*
4991 * Look for data collected during ServerHello and parse if found.
4992 * Returns the number of SCTs extracted.
4993 */
4994static int ct_extract_tls_extension_scts(SSL *s)
4995{
4996 int scts_extracted = 0;
4997
4998 if (s->ext.scts != NULL) {
4999 const unsigned char *p = s->ext.scts;
5000 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5001
5002 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5003
5004 SCT_LIST_free(scts);
5005 }
5006
5007 return scts_extracted;
5008}
5009
5010/*
5011 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5012 * contains an SCT X509 extension. They will be stored in |s->scts|.
5013 * Returns:
5014 * - The number of SCTs extracted, assuming an OCSP response exists.
5015 * - 0 if no OCSP response exists or it contains no SCTs.
5016 * - A negative integer if an error occurs.
5017 */
5018static int ct_extract_ocsp_response_scts(SSL *s)
5019{
5020# ifndef OPENSSL_NO_OCSP
5021 int scts_extracted = 0;
5022 const unsigned char *p;
5023 OCSP_BASICRESP *br = NULL;
5024 OCSP_RESPONSE *rsp = NULL;
5025 STACK_OF(SCT) *scts = NULL;
5026 int i;
5027
5028 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5029 goto err;
5030
5031 p = s->ext.ocsp.resp;
5032 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5033 if (rsp == NULL)
5034 goto err;
5035
5036 br = OCSP_response_get1_basic(rsp);
5037 if (br == NULL)
5038 goto err;
5039
5040 for (i = 0; i < OCSP_resp_count(br); ++i) {
5041 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5042
5043 if (single == NULL)
5044 continue;
5045
5046 scts =
5047 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5048 scts_extracted =
5049 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5050 if (scts_extracted < 0)
5051 goto err;
5052 }
5053 err:
5054 SCT_LIST_free(scts);
5055 OCSP_BASICRESP_free(br);
5056 OCSP_RESPONSE_free(rsp);
5057 return scts_extracted;
5058# else
5059 /* Behave as if no OCSP response exists */
5060 return 0;
5061# endif
5062}
5063
5064/*
5065 * Attempts to extract SCTs from the peer certificate.
5066 * Return the number of SCTs extracted, or a negative integer if an error
5067 * occurs.
5068 */
5069static int ct_extract_x509v3_extension_scts(SSL *s)
5070{
5071 int scts_extracted = 0;
5072 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5073
5074 if (cert != NULL) {
5075 STACK_OF(SCT) *scts =
5076 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5077
5078 scts_extracted =
5079 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5080
5081 SCT_LIST_free(scts);
5082 }
5083
5084 return scts_extracted;
5085}
5086
5087/*
5088 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5089 * response (if it exists) and X509v3 extensions in the certificate.
5090 * Returns NULL if an error occurs.
5091 */
5092const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5093{
5094 if (!s->scts_parsed) {
5095 if (ct_extract_tls_extension_scts(s) < 0 ||
5096 ct_extract_ocsp_response_scts(s) < 0 ||
5097 ct_extract_x509v3_extension_scts(s) < 0)
5098 goto err;
5099
5100 s->scts_parsed = 1;
5101 }
5102 return s->scts;
5103 err:
5104 return NULL;
5105}
5106
5107static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5108 const STACK_OF(SCT) *scts, void *unused_arg)
5109{
5110 return 1;
5111}
5112
5113static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5114 const STACK_OF(SCT) *scts, void *unused_arg)
5115{
5116 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5117 int i;
5118
5119 for (i = 0; i < count; ++i) {
5120 SCT *sct = sk_SCT_value(scts, i);
5121 int status = SCT_get_validation_status(sct);
5122
5123 if (status == SCT_VALIDATION_STATUS_VALID)
5124 return 1;
5125 }
5126 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5127 return 0;
5128}
5129
5130int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5131 void *arg)
5132{
5133 /*
5134 * Since code exists that uses the custom extension handler for CT, look
5135 * for this and throw an error if they have already registered to use CT.
5136 */
5137 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5138 TLSEXT_TYPE_signed_certificate_timestamp))
5139 {
5140 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5141 return 0;
5142 }
5143
5144 if (callback != NULL) {
5145 /*
5146 * If we are validating CT, then we MUST accept SCTs served via OCSP
5147 */
5148 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5149 return 0;
5150 }
5151
5152 s->ct_validation_callback = callback;
5153 s->ct_validation_callback_arg = arg;
5154
5155 return 1;
5156}
5157
5158int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5159 ssl_ct_validation_cb callback, void *arg)
5160{
5161 /*
5162 * Since code exists that uses the custom extension handler for CT, look for
5163 * this and throw an error if they have already registered to use CT.
5164 */
5165 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5166 TLSEXT_TYPE_signed_certificate_timestamp))
5167 {
5168 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5169 return 0;
5170 }
5171
5172 ctx->ct_validation_callback = callback;
5173 ctx->ct_validation_callback_arg = arg;
5174 return 1;
5175}
5176
5177int SSL_ct_is_enabled(const SSL *s)
5178{
5179 return s->ct_validation_callback != NULL;
5180}
5181
5182int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5183{
5184 return ctx->ct_validation_callback != NULL;
5185}
5186
5187int ssl_validate_ct(SSL *s)
5188{
5189 int ret = 0;
5190 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5191 X509 *issuer;
5192 SSL_DANE *dane = &s->dane;
5193 CT_POLICY_EVAL_CTX *ctx = NULL;
5194 const STACK_OF(SCT) *scts;
5195
5196 /*
5197 * If no callback is set, the peer is anonymous, or its chain is invalid,
5198 * skip SCT validation - just return success. Applications that continue
5199 * handshakes without certificates, with unverified chains, or pinned leaf
5200 * certificates are outside the scope of the WebPKI and CT.
5201 *
5202 * The above exclusions notwithstanding the vast majority of peers will
5203 * have rather ordinary certificate chains validated by typical
5204 * applications that perform certificate verification and therefore will
5205 * process SCTs when enabled.
5206 */
5207 if (s->ct_validation_callback == NULL || cert == NULL ||
5208 s->verify_result != X509_V_OK ||
5209 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5210 return 1;
5211
5212 /*
5213 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5214 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5215 */
5216 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5217 switch (dane->mtlsa->usage) {
5218 case DANETLS_USAGE_DANE_TA:
5219 case DANETLS_USAGE_DANE_EE:
5220 return 1;
5221 }
5222 }
5223
5224 ctx = CT_POLICY_EVAL_CTX_new_ex(s->ctx->libctx, s->ctx->propq);
5225 if (ctx == NULL) {
5226 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5227 goto end;
5228 }
5229
5230 issuer = sk_X509_value(s->verified_chain, 1);
5231 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5232 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5233 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5234 CT_POLICY_EVAL_CTX_set_time(
5235 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5236
5237 scts = SSL_get0_peer_scts(s);
5238
5239 /*
5240 * This function returns success (> 0) only when all the SCTs are valid, 0
5241 * when some are invalid, and < 0 on various internal errors (out of
5242 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5243 * reason to abort the handshake, that decision is up to the callback.
5244 * Therefore, we error out only in the unexpected case that the return
5245 * value is negative.
5246 *
5247 * XXX: One might well argue that the return value of this function is an
5248 * unfortunate design choice. Its job is only to determine the validation
5249 * status of each of the provided SCTs. So long as it correctly separates
5250 * the wheat from the chaff it should return success. Failure in this case
5251 * ought to correspond to an inability to carry out its duties.
5252 */
5253 if (SCT_LIST_validate(scts, ctx) < 0) {
5254 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
5255 goto end;
5256 }
5257
5258 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5259 if (ret < 0)
5260 ret = 0; /* This function returns 0 on failure */
5261 if (!ret)
5262 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
5263
5264 end:
5265 CT_POLICY_EVAL_CTX_free(ctx);
5266 /*
5267 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5268 * failure return code here. Also the application may wish the complete
5269 * the handshake, and then disconnect cleanly at a higher layer, after
5270 * checking the verification status of the completed connection.
5271 *
5272 * We therefore force a certificate verification failure which will be
5273 * visible via SSL_get_verify_result() and cached as part of any resumed
5274 * session.
5275 *
5276 * Note: the permissive callback is for information gathering only, always
5277 * returns success, and does not affect verification status. Only the
5278 * strict callback or a custom application-specified callback can trigger
5279 * connection failure or record a verification error.
5280 */
5281 if (ret <= 0)
5282 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5283 return ret;
5284}
5285
5286int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5287{
5288 switch (validation_mode) {
5289 default:
5290 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
5291 return 0;
5292 case SSL_CT_VALIDATION_PERMISSIVE:
5293 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5294 case SSL_CT_VALIDATION_STRICT:
5295 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5296 }
5297}
5298
5299int SSL_enable_ct(SSL *s, int validation_mode)
5300{
5301 switch (validation_mode) {
5302 default:
5303 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
5304 return 0;
5305 case SSL_CT_VALIDATION_PERMISSIVE:
5306 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5307 case SSL_CT_VALIDATION_STRICT:
5308 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5309 }
5310}
5311
5312int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5313{
5314 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5315}
5316
5317int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5318{
5319 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5320}
5321
5322void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5323{
5324 CTLOG_STORE_free(ctx->ctlog_store);
5325 ctx->ctlog_store = logs;
5326}
5327
5328const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5329{
5330 return ctx->ctlog_store;
5331}
5332
5333#endif /* OPENSSL_NO_CT */
5334
5335void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5336 void *arg)
5337{
5338 c->client_hello_cb = cb;
5339 c->client_hello_cb_arg = arg;
5340}
5341
5342int SSL_client_hello_isv2(SSL *s)
5343{
5344 if (s->clienthello == NULL)
5345 return 0;
5346 return s->clienthello->isv2;
5347}
5348
5349unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5350{
5351 if (s->clienthello == NULL)
5352 return 0;
5353 return s->clienthello->legacy_version;
5354}
5355
5356size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5357{
5358 if (s->clienthello == NULL)
5359 return 0;
5360 if (out != NULL)
5361 *out = s->clienthello->random;
5362 return SSL3_RANDOM_SIZE;
5363}
5364
5365size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5366{
5367 if (s->clienthello == NULL)
5368 return 0;
5369 if (out != NULL)
5370 *out = s->clienthello->session_id;
5371 return s->clienthello->session_id_len;
5372}
5373
5374size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5375{
5376 if (s->clienthello == NULL)
5377 return 0;
5378 if (out != NULL)
5379 *out = PACKET_data(&s->clienthello->ciphersuites);
5380 return PACKET_remaining(&s->clienthello->ciphersuites);
5381}
5382
5383size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5384{
5385 if (s->clienthello == NULL)
5386 return 0;
5387 if (out != NULL)
5388 *out = s->clienthello->compressions;
5389 return s->clienthello->compressions_len;
5390}
5391
5392int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5393{
5394 RAW_EXTENSION *ext;
5395 int *present;
5396 size_t num = 0, i;
5397
5398 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5399 return 0;
5400 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5401 ext = s->clienthello->pre_proc_exts + i;
5402 if (ext->present)
5403 num++;
5404 }
5405 if (num == 0) {
5406 *out = NULL;
5407 *outlen = 0;
5408 return 1;
5409 }
5410 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5411 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5412 return 0;
5413 }
5414 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5415 ext = s->clienthello->pre_proc_exts + i;
5416 if (ext->present) {
5417 if (ext->received_order >= num)
5418 goto err;
5419 present[ext->received_order] = ext->type;
5420 }
5421 }
5422 *out = present;
5423 *outlen = num;
5424 return 1;
5425 err:
5426 OPENSSL_free(present);
5427 return 0;
5428}
5429
5430int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5431 size_t *outlen)
5432{
5433 size_t i;
5434 RAW_EXTENSION *r;
5435
5436 if (s->clienthello == NULL)
5437 return 0;
5438 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5439 r = s->clienthello->pre_proc_exts + i;
5440 if (r->present && r->type == type) {
5441 if (out != NULL)
5442 *out = PACKET_data(&r->data);
5443 if (outlen != NULL)
5444 *outlen = PACKET_remaining(&r->data);
5445 return 1;
5446 }
5447 }
5448 return 0;
5449}
5450
5451int SSL_free_buffers(SSL *ssl)
5452{
5453 RECORD_LAYER *rl = &ssl->rlayer;
5454
5455 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5456 return 0;
5457
5458 RECORD_LAYER_release(rl);
5459 return 1;
5460}
5461
5462int SSL_alloc_buffers(SSL *ssl)
5463{
5464 return ssl3_setup_buffers(ssl);
5465}
5466
5467void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5468{
5469 ctx->keylog_callback = cb;
5470}
5471
5472SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5473{
5474 return ctx->keylog_callback;
5475}
5476
5477static int nss_keylog_int(const char *prefix,
5478 SSL *ssl,
5479 const uint8_t *parameter_1,
5480 size_t parameter_1_len,
5481 const uint8_t *parameter_2,
5482 size_t parameter_2_len)
5483{
5484 char *out = NULL;
5485 char *cursor = NULL;
5486 size_t out_len = 0;
5487 size_t i;
5488 size_t prefix_len;
5489
5490 if (ssl->ctx->keylog_callback == NULL)
5491 return 1;
5492
5493 /*
5494 * Our output buffer will contain the following strings, rendered with
5495 * space characters in between, terminated by a NULL character: first the
5496 * prefix, then the first parameter, then the second parameter. The
5497 * meaning of each parameter depends on the specific key material being
5498 * logged. Note that the first and second parameters are encoded in
5499 * hexadecimal, so we need a buffer that is twice their lengths.
5500 */
5501 prefix_len = strlen(prefix);
5502 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5503 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5504 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5505 return 0;
5506 }
5507
5508 strcpy(cursor, prefix);
5509 cursor += prefix_len;
5510 *cursor++ = ' ';
5511
5512 for (i = 0; i < parameter_1_len; i++) {
5513 sprintf(cursor, "%02x", parameter_1[i]);
5514 cursor += 2;
5515 }
5516 *cursor++ = ' ';
5517
5518 for (i = 0; i < parameter_2_len; i++) {
5519 sprintf(cursor, "%02x", parameter_2[i]);
5520 cursor += 2;
5521 }
5522 *cursor = '\0';
5523
5524 ssl->ctx->keylog_callback(ssl, (const char *)out);
5525 OPENSSL_clear_free(out, out_len);
5526 return 1;
5527
5528}
5529
5530int ssl_log_rsa_client_key_exchange(SSL *ssl,
5531 const uint8_t *encrypted_premaster,
5532 size_t encrypted_premaster_len,
5533 const uint8_t *premaster,
5534 size_t premaster_len)
5535{
5536 if (encrypted_premaster_len < 8) {
5537 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5538 return 0;
5539 }
5540
5541 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5542 return nss_keylog_int("RSA",
5543 ssl,
5544 encrypted_premaster,
5545 8,
5546 premaster,
5547 premaster_len);
5548}
5549
5550int ssl_log_secret(SSL *ssl,
5551 const char *label,
5552 const uint8_t *secret,
5553 size_t secret_len)
5554{
5555 return nss_keylog_int(label,
5556 ssl,
5557 ssl->s3.client_random,
5558 SSL3_RANDOM_SIZE,
5559 secret,
5560 secret_len);
5561}
5562
5563#define SSLV2_CIPHER_LEN 3
5564
5565int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5566{
5567 int n;
5568
5569 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5570
5571 if (PACKET_remaining(cipher_suites) == 0) {
5572 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
5573 return 0;
5574 }
5575
5576 if (PACKET_remaining(cipher_suites) % n != 0) {
5577 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5578 return 0;
5579 }
5580
5581 OPENSSL_free(s->s3.tmp.ciphers_raw);
5582 s->s3.tmp.ciphers_raw = NULL;
5583 s->s3.tmp.ciphers_rawlen = 0;
5584
5585 if (sslv2format) {
5586 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5587 PACKET sslv2ciphers = *cipher_suites;
5588 unsigned int leadbyte;
5589 unsigned char *raw;
5590
5591 /*
5592 * We store the raw ciphers list in SSLv3+ format so we need to do some
5593 * preprocessing to convert the list first. If there are any SSLv2 only
5594 * ciphersuites with a non-zero leading byte then we are going to
5595 * slightly over allocate because we won't store those. But that isn't a
5596 * problem.
5597 */
5598 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5599 s->s3.tmp.ciphers_raw = raw;
5600 if (raw == NULL) {
5601 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5602 return 0;
5603 }
5604 for (s->s3.tmp.ciphers_rawlen = 0;
5605 PACKET_remaining(&sslv2ciphers) > 0;
5606 raw += TLS_CIPHER_LEN) {
5607 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5608 || (leadbyte == 0
5609 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5610 TLS_CIPHER_LEN))
5611 || (leadbyte != 0
5612 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5613 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
5614 OPENSSL_free(s->s3.tmp.ciphers_raw);
5615 s->s3.tmp.ciphers_raw = NULL;
5616 s->s3.tmp.ciphers_rawlen = 0;
5617 return 0;
5618 }
5619 if (leadbyte == 0)
5620 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5621 }
5622 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5623 &s->s3.tmp.ciphers_rawlen)) {
5624 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5625 return 0;
5626 }
5627 return 1;
5628}
5629
5630int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5631 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5632 STACK_OF(SSL_CIPHER) **scsvs)
5633{
5634 PACKET pkt;
5635
5636 if (!PACKET_buf_init(&pkt, bytes, len))
5637 return 0;
5638 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5639}
5640
5641int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5642 STACK_OF(SSL_CIPHER) **skp,
5643 STACK_OF(SSL_CIPHER) **scsvs_out,
5644 int sslv2format, int fatal)
5645{
5646 const SSL_CIPHER *c;
5647 STACK_OF(SSL_CIPHER) *sk = NULL;
5648 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5649 int n;
5650 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5651 unsigned char cipher[SSLV2_CIPHER_LEN];
5652
5653 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5654
5655 if (PACKET_remaining(cipher_suites) == 0) {
5656 if (fatal)
5657 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
5658 else
5659 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
5660 return 0;
5661 }
5662
5663 if (PACKET_remaining(cipher_suites) % n != 0) {
5664 if (fatal)
5665 SSLfatal(s, SSL_AD_DECODE_ERROR,
5666 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5667 else
5668 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5669 return 0;
5670 }
5671
5672 sk = sk_SSL_CIPHER_new_null();
5673 scsvs = sk_SSL_CIPHER_new_null();
5674 if (sk == NULL || scsvs == NULL) {
5675 if (fatal)
5676 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5677 else
5678 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5679 goto err;
5680 }
5681
5682 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5683 /*
5684 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5685 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5686 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5687 */
5688 if (sslv2format && cipher[0] != '\0')
5689 continue;
5690
5691 /* For SSLv2-compat, ignore leading 0-byte. */
5692 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5693 if (c != NULL) {
5694 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5695 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5696 if (fatal)
5697 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5698 else
5699 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5700 goto err;
5701 }
5702 }
5703 }
5704 if (PACKET_remaining(cipher_suites) > 0) {
5705 if (fatal)
5706 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
5707 else
5708 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
5709 goto err;
5710 }
5711
5712 if (skp != NULL)
5713 *skp = sk;
5714 else
5715 sk_SSL_CIPHER_free(sk);
5716 if (scsvs_out != NULL)
5717 *scsvs_out = scsvs;
5718 else
5719 sk_SSL_CIPHER_free(scsvs);
5720 return 1;
5721 err:
5722 sk_SSL_CIPHER_free(sk);
5723 sk_SSL_CIPHER_free(scsvs);
5724 return 0;
5725}
5726
5727int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5728{
5729 ctx->max_early_data = max_early_data;
5730
5731 return 1;
5732}
5733
5734uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5735{
5736 return ctx->max_early_data;
5737}
5738
5739int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5740{
5741 s->max_early_data = max_early_data;
5742
5743 return 1;
5744}
5745
5746uint32_t SSL_get_max_early_data(const SSL *s)
5747{
5748 return s->max_early_data;
5749}
5750
5751int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5752{
5753 ctx->recv_max_early_data = recv_max_early_data;
5754
5755 return 1;
5756}
5757
5758uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5759{
5760 return ctx->recv_max_early_data;
5761}
5762
5763int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5764{
5765 s->recv_max_early_data = recv_max_early_data;
5766
5767 return 1;
5768}
5769
5770uint32_t SSL_get_recv_max_early_data(const SSL *s)
5771{
5772 return s->recv_max_early_data;
5773}
5774
5775__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5776{
5777 /* Return any active Max Fragment Len extension */
5778 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5779 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5780
5781 /* return current SSL connection setting */
5782 return ssl->max_send_fragment;
5783}
5784
5785__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5786{
5787 /* Return a value regarding an active Max Fragment Len extension */
5788 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5789 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5790 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5791
5792 /* else limit |split_send_fragment| to current |max_send_fragment| */
5793 if (ssl->split_send_fragment > ssl->max_send_fragment)
5794 return ssl->max_send_fragment;
5795
5796 /* return current SSL connection setting */
5797 return ssl->split_send_fragment;
5798}
5799
5800int SSL_stateless(SSL *s)
5801{
5802 int ret;
5803
5804 /* Ensure there is no state left over from a previous invocation */
5805 if (!SSL_clear(s))
5806 return 0;
5807
5808 ERR_clear_error();
5809
5810 s->s3.flags |= TLS1_FLAGS_STATELESS;
5811 ret = SSL_accept(s);
5812 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5813
5814 if (ret > 0 && s->ext.cookieok)
5815 return 1;
5816
5817 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5818 return 0;
5819
5820 return -1;
5821}
5822
5823void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5824{
5825 ctx->pha_enabled = val;
5826}
5827
5828void SSL_set_post_handshake_auth(SSL *ssl, int val)
5829{
5830 ssl->pha_enabled = val;
5831}
5832
5833int SSL_verify_client_post_handshake(SSL *ssl)
5834{
5835 if (!SSL_IS_TLS13(ssl)) {
5836 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
5837 return 0;
5838 }
5839 if (!ssl->server) {
5840 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
5841 return 0;
5842 }
5843
5844 if (!SSL_is_init_finished(ssl)) {
5845 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
5846 return 0;
5847 }
5848
5849 switch (ssl->post_handshake_auth) {
5850 case SSL_PHA_NONE:
5851 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
5852 return 0;
5853 default:
5854 case SSL_PHA_EXT_SENT:
5855 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
5856 return 0;
5857 case SSL_PHA_EXT_RECEIVED:
5858 break;
5859 case SSL_PHA_REQUEST_PENDING:
5860 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
5861 return 0;
5862 case SSL_PHA_REQUESTED:
5863 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
5864 return 0;
5865 }
5866
5867 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5868
5869 /* checks verify_mode and algorithm_auth */
5870 if (!send_certificate_request(ssl)) {
5871 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5872 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
5873 return 0;
5874 }
5875
5876 ossl_statem_set_in_init(ssl, 1);
5877 return 1;
5878}
5879
5880int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5881 SSL_CTX_generate_session_ticket_fn gen_cb,
5882 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5883 void *arg)
5884{
5885 ctx->generate_ticket_cb = gen_cb;
5886 ctx->decrypt_ticket_cb = dec_cb;
5887 ctx->ticket_cb_data = arg;
5888 return 1;
5889}
5890
5891void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5892 SSL_allow_early_data_cb_fn cb,
5893 void *arg)
5894{
5895 ctx->allow_early_data_cb = cb;
5896 ctx->allow_early_data_cb_data = arg;
5897}
5898
5899void SSL_set_allow_early_data_cb(SSL *s,
5900 SSL_allow_early_data_cb_fn cb,
5901 void *arg)
5902{
5903 s->allow_early_data_cb = cb;
5904 s->allow_early_data_cb_data = arg;
5905}
5906
5907const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
5908 int nid,
5909 const char *properties)
5910{
5911 const EVP_CIPHER *ciph;
5912
5913 ciph = tls_get_cipher_from_engine(nid);
5914 if (ciph != NULL)
5915 return ciph;
5916
5917 /*
5918 * If there is no engine cipher then we do an explicit fetch. This may fail
5919 * and that could be ok
5920 */
5921 ERR_set_mark();
5922 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5923 ERR_pop_to_mark();
5924 return ciph;
5925}
5926
5927
5928int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5929{
5930 /* Don't up-ref an implicit EVP_CIPHER */
5931 if (EVP_CIPHER_get0_provider(cipher) == NULL)
5932 return 1;
5933
5934 /*
5935 * The cipher was explicitly fetched and therefore it is safe to cast
5936 * away the const
5937 */
5938 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5939}
5940
5941void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5942{
5943 if (cipher == NULL)
5944 return;
5945
5946 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
5947 /*
5948 * The cipher was explicitly fetched and therefore it is safe to cast
5949 * away the const
5950 */
5951 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5952 }
5953}
5954
5955const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
5956 int nid,
5957 const char *properties)
5958{
5959 const EVP_MD *md;
5960
5961 md = tls_get_digest_from_engine(nid);
5962 if (md != NULL)
5963 return md;
5964
5965 /* Otherwise we do an explicit fetch */
5966 ERR_set_mark();
5967 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5968 ERR_pop_to_mark();
5969 return md;
5970}
5971
5972int ssl_evp_md_up_ref(const EVP_MD *md)
5973{
5974 /* Don't up-ref an implicit EVP_MD */
5975 if (EVP_MD_get0_provider(md) == NULL)
5976 return 1;
5977
5978 /*
5979 * The digest was explicitly fetched and therefore it is safe to cast
5980 * away the const
5981 */
5982 return EVP_MD_up_ref((EVP_MD *)md);
5983}
5984
5985void ssl_evp_md_free(const EVP_MD *md)
5986{
5987 if (md == NULL)
5988 return;
5989
5990 if (EVP_MD_get0_provider(md) != NULL) {
5991 /*
5992 * The digest was explicitly fetched and therefore it is safe to cast
5993 * away the const
5994 */
5995 EVP_MD_free((EVP_MD *)md);
5996 }
5997}
5998
5999int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6000{
6001 if (!ssl_security(s, SSL_SECOP_TMP_DH,
6002 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6003 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6004 return 0;
6005 }
6006 EVP_PKEY_free(s->cert->dh_tmp);
6007 s->cert->dh_tmp = dhpkey;
6008 return 1;
6009}
6010
6011int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6012{
6013 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6014 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6015 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6016 return 0;
6017 }
6018 EVP_PKEY_free(ctx->cert->dh_tmp);
6019 ctx->cert->dh_tmp = dhpkey;
6020 return 1;
6021}
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