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source: vbox/trunk/src/libs/openssl-1.1.1g/ssl/ssl_lib.c@ 84032

Last change on this file since 84032 was 83916, checked in by vboxsync, 5 years ago

openssl-1.1.1g: Applied and adjusted our OpenSSL changes to 1.1.1g. bugref:9719
File size: 156.8 KB
Line 
1/*
2 * Copyright 1995-2020 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 OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
10 */
11
12#include <stdio.h>
13#include "ssl_local.h"
14#include <openssl/objects.h>
15#include <openssl/x509v3.h>
16#include <openssl/rand.h>
17#include <openssl/rand_drbg.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 "internal/cryptlib.h"
24#include "internal/refcount.h"
25
26const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
27
28static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
29{
30 (void)r;
31 (void)s;
32 (void)t;
33 return ssl_undefined_function(ssl);
34}
35
36static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
37 int t)
38{
39 (void)r;
40 (void)s;
41 (void)t;
42 return ssl_undefined_function(ssl);
43}
44
45static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
46 unsigned char *s, size_t t, size_t *u)
47{
48 (void)r;
49 (void)s;
50 (void)t;
51 (void)u;
52 return ssl_undefined_function(ssl);
53}
54
55static int ssl_undefined_function_4(SSL *ssl, int r)
56{
57 (void)r;
58 return ssl_undefined_function(ssl);
59}
60
61static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
62 unsigned char *t)
63{
64 (void)r;
65 (void)s;
66 (void)t;
67 return ssl_undefined_function(ssl);
68}
69
70static int ssl_undefined_function_6(int r)
71{
72 (void)r;
73 return ssl_undefined_function(NULL);
74}
75
76static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
77 const char *t, size_t u,
78 const unsigned char *v, size_t w, int x)
79{
80 (void)r;
81 (void)s;
82 (void)t;
83 (void)u;
84 (void)v;
85 (void)w;
86 (void)x;
87 return ssl_undefined_function(ssl);
88}
89
90SSL3_ENC_METHOD ssl3_undef_enc_method = {
91 ssl_undefined_function_1,
92 ssl_undefined_function_2,
93 ssl_undefined_function,
94 ssl_undefined_function_3,
95 ssl_undefined_function_4,
96 ssl_undefined_function_5,
97 NULL, /* client_finished_label */
98 0, /* client_finished_label_len */
99 NULL, /* server_finished_label */
100 0, /* server_finished_label_len */
101 ssl_undefined_function_6,
102 ssl_undefined_function_7,
103};
104
105struct ssl_async_args {
106 SSL *s;
107 void *buf;
108 size_t num;
109 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
110 union {
111 int (*func_read) (SSL *, void *, size_t, size_t *);
112 int (*func_write) (SSL *, const void *, size_t, size_t *);
113 int (*func_other) (SSL *);
114 } f;
115};
116
117static const struct {
118 uint8_t mtype;
119 uint8_t ord;
120 int nid;
121} dane_mds[] = {
122 {
123 DANETLS_MATCHING_FULL, 0, NID_undef
124 },
125 {
126 DANETLS_MATCHING_2256, 1, NID_sha256
127 },
128 {
129 DANETLS_MATCHING_2512, 2, NID_sha512
130 },
131};
132
133static int dane_ctx_enable(struct dane_ctx_st *dctx)
134{
135 const EVP_MD **mdevp;
136 uint8_t *mdord;
137 uint8_t mdmax = DANETLS_MATCHING_LAST;
138 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
139 size_t i;
140
141 if (dctx->mdevp != NULL)
142 return 1;
143
144 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
145 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
146
147 if (mdord == NULL || mdevp == NULL) {
148 OPENSSL_free(mdord);
149 OPENSSL_free(mdevp);
150 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
151 return 0;
152 }
153
154 /* Install default entries */
155 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
156 const EVP_MD *md;
157
158 if (dane_mds[i].nid == NID_undef ||
159 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
160 continue;
161 mdevp[dane_mds[i].mtype] = md;
162 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
163 }
164
165 dctx->mdevp = mdevp;
166 dctx->mdord = mdord;
167 dctx->mdmax = mdmax;
168
169 return 1;
170}
171
172static void dane_ctx_final(struct dane_ctx_st *dctx)
173{
174 OPENSSL_free(dctx->mdevp);
175 dctx->mdevp = NULL;
176
177 OPENSSL_free(dctx->mdord);
178 dctx->mdord = NULL;
179 dctx->mdmax = 0;
180}
181
182static void tlsa_free(danetls_record *t)
183{
184 if (t == NULL)
185 return;
186 OPENSSL_free(t->data);
187 EVP_PKEY_free(t->spki);
188 OPENSSL_free(t);
189}
190
191static void dane_final(SSL_DANE *dane)
192{
193 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
194 dane->trecs = NULL;
195
196 sk_X509_pop_free(dane->certs, X509_free);
197 dane->certs = NULL;
198
199 X509_free(dane->mcert);
200 dane->mcert = NULL;
201 dane->mtlsa = NULL;
202 dane->mdpth = -1;
203 dane->pdpth = -1;
204}
205
206/*
207 * dane_copy - Copy dane configuration, sans verification state.
208 */
209static int ssl_dane_dup(SSL *to, SSL *from)
210{
211 int num;
212 int i;
213
214 if (!DANETLS_ENABLED(&from->dane))
215 return 1;
216
217 num = sk_danetls_record_num(from->dane.trecs);
218 dane_final(&to->dane);
219 to->dane.flags = from->dane.flags;
220 to->dane.dctx = &to->ctx->dane;
221 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
222
223 if (to->dane.trecs == NULL) {
224 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
225 return 0;
226 }
227
228 for (i = 0; i < num; ++i) {
229 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
230
231 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
232 t->data, t->dlen) <= 0)
233 return 0;
234 }
235 return 1;
236}
237
238static int dane_mtype_set(struct dane_ctx_st *dctx,
239 const EVP_MD *md, uint8_t mtype, uint8_t ord)
240{
241 int i;
242
243 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
244 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
245 return 0;
246 }
247
248 if (mtype > dctx->mdmax) {
249 const EVP_MD **mdevp;
250 uint8_t *mdord;
251 int n = ((int)mtype) + 1;
252
253 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
254 if (mdevp == NULL) {
255 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
256 return -1;
257 }
258 dctx->mdevp = mdevp;
259
260 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
261 if (mdord == NULL) {
262 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
263 return -1;
264 }
265 dctx->mdord = mdord;
266
267 /* Zero-fill any gaps */
268 for (i = dctx->mdmax + 1; i < mtype; ++i) {
269 mdevp[i] = NULL;
270 mdord[i] = 0;
271 }
272
273 dctx->mdmax = mtype;
274 }
275
276 dctx->mdevp[mtype] = md;
277 /* Coerce ordinal of disabled matching types to 0 */
278 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
279
280 return 1;
281}
282
283static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
284{
285 if (mtype > dane->dctx->mdmax)
286 return NULL;
287 return dane->dctx->mdevp[mtype];
288}
289
290static int dane_tlsa_add(SSL_DANE *dane,
291 uint8_t usage,
292 uint8_t selector,
293 uint8_t mtype, unsigned const char *data, size_t dlen)
294{
295 danetls_record *t;
296 const EVP_MD *md = NULL;
297 int ilen = (int)dlen;
298 int i;
299 int num;
300
301 if (dane->trecs == NULL) {
302 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
303 return -1;
304 }
305
306 if (ilen < 0 || dlen != (size_t)ilen) {
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
308 return 0;
309 }
310
311 if (usage > DANETLS_USAGE_LAST) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
313 return 0;
314 }
315
316 if (selector > DANETLS_SELECTOR_LAST) {
317 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
318 return 0;
319 }
320
321 if (mtype != DANETLS_MATCHING_FULL) {
322 md = tlsa_md_get(dane, mtype);
323 if (md == NULL) {
324 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
325 return 0;
326 }
327 }
328
329 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
330 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
331 return 0;
332 }
333 if (!data) {
334 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
335 return 0;
336 }
337
338 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
340 return -1;
341 }
342
343 t->usage = usage;
344 t->selector = selector;
345 t->mtype = mtype;
346 t->data = OPENSSL_malloc(dlen);
347 if (t->data == NULL) {
348 tlsa_free(t);
349 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
350 return -1;
351 }
352 memcpy(t->data, data, dlen);
353 t->dlen = dlen;
354
355 /* Validate and cache full certificate or public key */
356 if (mtype == DANETLS_MATCHING_FULL) {
357 const unsigned char *p = data;
358 X509 *cert = NULL;
359 EVP_PKEY *pkey = NULL;
360
361 switch (selector) {
362 case DANETLS_SELECTOR_CERT:
363 if (!d2i_X509(&cert, &p, ilen) || p < data ||
364 dlen != (size_t)(p - data)) {
365 tlsa_free(t);
366 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
367 return 0;
368 }
369 if (X509_get0_pubkey(cert) == NULL) {
370 tlsa_free(t);
371 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
372 return 0;
373 }
374
375 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
376 X509_free(cert);
377 break;
378 }
379
380 /*
381 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
382 * records that contain full certificates of trust-anchors that are
383 * not present in the wire chain. For usage PKIX-TA(0), we augment
384 * the chain with untrusted Full(0) certificates from DNS, in case
385 * they are missing from the chain.
386 */
387 if ((dane->certs == NULL &&
388 (dane->certs = sk_X509_new_null()) == NULL) ||
389 !sk_X509_push(dane->certs, cert)) {
390 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
391 X509_free(cert);
392 tlsa_free(t);
393 return -1;
394 }
395 break;
396
397 case DANETLS_SELECTOR_SPKI:
398 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
399 dlen != (size_t)(p - data)) {
400 tlsa_free(t);
401 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
402 return 0;
403 }
404
405 /*
406 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
407 * records that contain full bare keys of trust-anchors that are
408 * not present in the wire chain.
409 */
410 if (usage == DANETLS_USAGE_DANE_TA)
411 t->spki = pkey;
412 else
413 EVP_PKEY_free(pkey);
414 break;
415 }
416 }
417
418 /*-
419 * Find the right insertion point for the new record.
420 *
421 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
422 * they can be processed first, as they require no chain building, and no
423 * expiration or hostname checks. Because DANE-EE(3) is numerically
424 * largest, this is accomplished via descending sort by "usage".
425 *
426 * We also sort in descending order by matching ordinal to simplify
427 * the implementation of digest agility in the verification code.
428 *
429 * The choice of order for the selector is not significant, so we
430 * use the same descending order for consistency.
431 */
432 num = sk_danetls_record_num(dane->trecs);
433 for (i = 0; i < num; ++i) {
434 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
435
436 if (rec->usage > usage)
437 continue;
438 if (rec->usage < usage)
439 break;
440 if (rec->selector > selector)
441 continue;
442 if (rec->selector < selector)
443 break;
444 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
445 continue;
446 break;
447 }
448
449 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
450 tlsa_free(t);
451 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
452 return -1;
453 }
454 dane->umask |= DANETLS_USAGE_BIT(usage);
455
456 return 1;
457}
458
459/*
460 * Return 0 if there is only one version configured and it was disabled
461 * at configure time. Return 1 otherwise.
462 */
463static int ssl_check_allowed_versions(int min_version, int max_version)
464{
465 int minisdtls = 0, maxisdtls = 0;
466
467 /* Figure out if we're doing DTLS versions or TLS versions */
468 if (min_version == DTLS1_BAD_VER
469 || min_version >> 8 == DTLS1_VERSION_MAJOR)
470 minisdtls = 1;
471 if (max_version == DTLS1_BAD_VER
472 || max_version >> 8 == DTLS1_VERSION_MAJOR)
473 maxisdtls = 1;
474 /* A wildcard version of 0 could be DTLS or TLS. */
475 if ((minisdtls && !maxisdtls && max_version != 0)
476 || (maxisdtls && !minisdtls && min_version != 0)) {
477 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
478 return 0;
479 }
480
481 if (minisdtls || maxisdtls) {
482 /* Do DTLS version checks. */
483 if (min_version == 0)
484 /* Ignore DTLS1_BAD_VER */
485 min_version = DTLS1_VERSION;
486 if (max_version == 0)
487 max_version = DTLS1_2_VERSION;
488#ifdef OPENSSL_NO_DTLS1_2
489 if (max_version == DTLS1_2_VERSION)
490 max_version = DTLS1_VERSION;
491#endif
492#ifdef OPENSSL_NO_DTLS1
493 if (min_version == DTLS1_VERSION)
494 min_version = DTLS1_2_VERSION;
495#endif
496 /* Done massaging versions; do the check. */
497 if (0
498#ifdef OPENSSL_NO_DTLS1
499 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
500 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
501#endif
502#ifdef OPENSSL_NO_DTLS1_2
503 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
504 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
505#endif
506 )
507 return 0;
508 } else {
509 /* Regular TLS version checks. */
510 if (min_version == 0)
511 min_version = SSL3_VERSION;
512 if (max_version == 0)
513 max_version = TLS1_3_VERSION;
514#ifdef OPENSSL_NO_TLS1_3
515 if (max_version == TLS1_3_VERSION)
516 max_version = TLS1_2_VERSION;
517#endif
518#ifdef OPENSSL_NO_TLS1_2
519 if (max_version == TLS1_2_VERSION)
520 max_version = TLS1_1_VERSION;
521#endif
522#ifdef OPENSSL_NO_TLS1_1
523 if (max_version == TLS1_1_VERSION)
524 max_version = TLS1_VERSION;
525#endif
526#ifdef OPENSSL_NO_TLS1
527 if (max_version == TLS1_VERSION)
528 max_version = SSL3_VERSION;
529#endif
530#ifdef OPENSSL_NO_SSL3
531 if (min_version == SSL3_VERSION)
532 min_version = TLS1_VERSION;
533#endif
534#ifdef OPENSSL_NO_TLS1
535 if (min_version == TLS1_VERSION)
536 min_version = TLS1_1_VERSION;
537#endif
538#ifdef OPENSSL_NO_TLS1_1
539 if (min_version == TLS1_1_VERSION)
540 min_version = TLS1_2_VERSION;
541#endif
542#ifdef OPENSSL_NO_TLS1_2
543 if (min_version == TLS1_2_VERSION)
544 min_version = TLS1_3_VERSION;
545#endif
546 /* Done massaging versions; do the check. */
547 if (0
548#ifdef OPENSSL_NO_SSL3
549 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
550#endif
551#ifdef OPENSSL_NO_TLS1
552 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
553#endif
554#ifdef OPENSSL_NO_TLS1_1
555 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
556#endif
557#ifdef OPENSSL_NO_TLS1_2
558 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
559#endif
560#ifdef OPENSSL_NO_TLS1_3
561 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
562#endif
563 )
564 return 0;
565 }
566 return 1;
567}
568
569static void clear_ciphers(SSL *s)
570{
571 /* clear the current cipher */
572 ssl_clear_cipher_ctx(s);
573 ssl_clear_hash_ctx(&s->read_hash);
574 ssl_clear_hash_ctx(&s->write_hash);
575}
576
577int SSL_clear(SSL *s)
578{
579 if (s->method == NULL) {
580 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
581 return 0;
582 }
583
584 if (ssl_clear_bad_session(s)) {
585 SSL_SESSION_free(s->session);
586 s->session = NULL;
587 }
588 SSL_SESSION_free(s->psksession);
589 s->psksession = NULL;
590 OPENSSL_free(s->psksession_id);
591 s->psksession_id = NULL;
592 s->psksession_id_len = 0;
593 s->hello_retry_request = 0;
594 s->sent_tickets = 0;
595
596 s->error = 0;
597 s->hit = 0;
598 s->shutdown = 0;
599
600 if (s->renegotiate) {
601 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
602 return 0;
603 }
604
605 ossl_statem_clear(s);
606
607 s->version = s->method->version;
608 s->client_version = s->version;
609 s->rwstate = SSL_NOTHING;
610
611 BUF_MEM_free(s->init_buf);
612 s->init_buf = NULL;
613 clear_ciphers(s);
614 s->first_packet = 0;
615
616 s->key_update = SSL_KEY_UPDATE_NONE;
617
618 EVP_MD_CTX_free(s->pha_dgst);
619 s->pha_dgst = NULL;
620
621 /* Reset DANE verification result state */
622 s->dane.mdpth = -1;
623 s->dane.pdpth = -1;
624 X509_free(s->dane.mcert);
625 s->dane.mcert = NULL;
626 s->dane.mtlsa = NULL;
627
628 /* Clear the verification result peername */
629 X509_VERIFY_PARAM_move_peername(s->param, NULL);
630
631 /* Clear any shared connection state */
632 OPENSSL_free(s->shared_sigalgs);
633 s->shared_sigalgs = NULL;
634 s->shared_sigalgslen = 0;
635
636 /*
637 * Check to see if we were changed into a different method, if so, revert
638 * back.
639 */
640 if (s->method != s->ctx->method) {
641 s->method->ssl_free(s);
642 s->method = s->ctx->method;
643 if (!s->method->ssl_new(s))
644 return 0;
645 } else {
646 if (!s->method->ssl_clear(s))
647 return 0;
648 }
649
650 RECORD_LAYER_clear(&s->rlayer);
651
652 return 1;
653}
654
655/** Used to change an SSL_CTXs default SSL method type */
656int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
657{
658 STACK_OF(SSL_CIPHER) *sk;
659
660 ctx->method = meth;
661
662 if (!SSL_CTX_set_ciphersuites(ctx, TLS_DEFAULT_CIPHERSUITES)) {
663 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
664 return 0;
665 }
666 sk = ssl_create_cipher_list(ctx->method,
667 ctx->tls13_ciphersuites,
668 &(ctx->cipher_list),
669 &(ctx->cipher_list_by_id),
670 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
671 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
672 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
673 return 0;
674 }
675 return 1;
676}
677
678SSL *SSL_new(SSL_CTX *ctx)
679{
680 SSL *s;
681
682 if (ctx == NULL) {
683 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
684 return NULL;
685 }
686 if (ctx->method == NULL) {
687 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
688 return NULL;
689 }
690
691 s = OPENSSL_zalloc(sizeof(*s));
692 if (s == NULL)
693 goto err;
694
695 s->references = 1;
696 s->lock = CRYPTO_THREAD_lock_new();
697 if (s->lock == NULL) {
698 OPENSSL_free(s);
699 s = NULL;
700 goto err;
701 }
702
703 RECORD_LAYER_init(&s->rlayer, s);
704
705 s->options = ctx->options;
706 s->dane.flags = ctx->dane.flags;
707 s->min_proto_version = ctx->min_proto_version;
708 s->max_proto_version = ctx->max_proto_version;
709 s->mode = ctx->mode;
710 s->max_cert_list = ctx->max_cert_list;
711 s->max_early_data = ctx->max_early_data;
712 s->recv_max_early_data = ctx->recv_max_early_data;
713 s->num_tickets = ctx->num_tickets;
714 s->pha_enabled = ctx->pha_enabled;
715
716 /* Shallow copy of the ciphersuites stack */
717 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
718 if (s->tls13_ciphersuites == NULL)
719 goto err;
720
721 /*
722 * Earlier library versions used to copy the pointer to the CERT, not
723 * its contents; only when setting new parameters for the per-SSL
724 * copy, ssl_cert_new would be called (and the direct reference to
725 * the per-SSL_CTX settings would be lost, but those still were
726 * indirectly accessed for various purposes, and for that reason they
727 * used to be known as s->ctx->default_cert). Now we don't look at the
728 * SSL_CTX's CERT after having duplicated it once.
729 */
730 s->cert = ssl_cert_dup(ctx->cert);
731 if (s->cert == NULL)
732 goto err;
733
734 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
735 s->msg_callback = ctx->msg_callback;
736 s->msg_callback_arg = ctx->msg_callback_arg;
737 s->verify_mode = ctx->verify_mode;
738 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
739 s->record_padding_cb = ctx->record_padding_cb;
740 s->record_padding_arg = ctx->record_padding_arg;
741 s->block_padding = ctx->block_padding;
742 s->sid_ctx_length = ctx->sid_ctx_length;
743 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
744 goto err;
745 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
746 s->verify_callback = ctx->default_verify_callback;
747 s->generate_session_id = ctx->generate_session_id;
748
749 s->param = X509_VERIFY_PARAM_new();
750 if (s->param == NULL)
751 goto err;
752 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
753 s->quiet_shutdown = ctx->quiet_shutdown;
754
755 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
756 s->max_send_fragment = ctx->max_send_fragment;
757 s->split_send_fragment = ctx->split_send_fragment;
758 s->max_pipelines = ctx->max_pipelines;
759 if (s->max_pipelines > 1)
760 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
761 if (ctx->default_read_buf_len > 0)
762 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
763
764 SSL_CTX_up_ref(ctx);
765 s->ctx = ctx;
766 s->ext.debug_cb = 0;
767 s->ext.debug_arg = NULL;
768 s->ext.ticket_expected = 0;
769 s->ext.status_type = ctx->ext.status_type;
770 s->ext.status_expected = 0;
771 s->ext.ocsp.ids = NULL;
772 s->ext.ocsp.exts = NULL;
773 s->ext.ocsp.resp = NULL;
774 s->ext.ocsp.resp_len = 0;
775 SSL_CTX_up_ref(ctx);
776 s->session_ctx = ctx;
777#ifndef OPENSSL_NO_EC
778 if (ctx->ext.ecpointformats) {
779 s->ext.ecpointformats =
780 OPENSSL_memdup(ctx->ext.ecpointformats,
781 ctx->ext.ecpointformats_len);
782 if (!s->ext.ecpointformats)
783 goto err;
784 s->ext.ecpointformats_len =
785 ctx->ext.ecpointformats_len;
786 }
787 if (ctx->ext.supportedgroups) {
788 s->ext.supportedgroups =
789 OPENSSL_memdup(ctx->ext.supportedgroups,
790 ctx->ext.supportedgroups_len
791 * sizeof(*ctx->ext.supportedgroups));
792 if (!s->ext.supportedgroups)
793 goto err;
794 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
795 }
796#endif
797#ifndef OPENSSL_NO_NEXTPROTONEG
798 s->ext.npn = NULL;
799#endif
800
801 if (s->ctx->ext.alpn) {
802 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
803 if (s->ext.alpn == NULL)
804 goto err;
805 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
806 s->ext.alpn_len = s->ctx->ext.alpn_len;
807 }
808
809 s->verified_chain = NULL;
810 s->verify_result = X509_V_OK;
811
812 s->default_passwd_callback = ctx->default_passwd_callback;
813 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
814
815 s->method = ctx->method;
816
817 s->key_update = SSL_KEY_UPDATE_NONE;
818
819 s->allow_early_data_cb = ctx->allow_early_data_cb;
820 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
821
822 if (!s->method->ssl_new(s))
823 goto err;
824
825 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
826
827 if (!SSL_clear(s))
828 goto err;
829
830 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
831 goto err;
832
833#ifndef OPENSSL_NO_PSK
834 s->psk_client_callback = ctx->psk_client_callback;
835 s->psk_server_callback = ctx->psk_server_callback;
836#endif
837 s->psk_find_session_cb = ctx->psk_find_session_cb;
838 s->psk_use_session_cb = ctx->psk_use_session_cb;
839
840 s->job = NULL;
841
842#ifndef OPENSSL_NO_CT
843 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
844 ctx->ct_validation_callback_arg))
845 goto err;
846#endif
847
848 return s;
849 err:
850 SSL_free(s);
851 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
852 return NULL;
853}
854
855int SSL_is_dtls(const SSL *s)
856{
857 return SSL_IS_DTLS(s) ? 1 : 0;
858}
859
860int SSL_up_ref(SSL *s)
861{
862 int i;
863
864 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
865 return 0;
866
867 REF_PRINT_COUNT("SSL", s);
868 REF_ASSERT_ISNT(i < 2);
869 return ((i > 1) ? 1 : 0);
870}
871
872int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
873 unsigned int sid_ctx_len)
874{
875 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
876 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
877 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
878 return 0;
879 }
880 ctx->sid_ctx_length = sid_ctx_len;
881 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
882
883 return 1;
884}
885
886int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
887 unsigned int sid_ctx_len)
888{
889 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
890 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
891 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 CRYPTO_THREAD_write_lock(ctx->lock);
903 ctx->generate_session_id = cb;
904 CRYPTO_THREAD_unlock(ctx->lock);
905 return 1;
906}
907
908int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
909{
910 CRYPTO_THREAD_write_lock(ssl->lock);
911 ssl->generate_session_id = cb;
912 CRYPTO_THREAD_unlock(ssl->lock);
913 return 1;
914}
915
916int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
917 unsigned int id_len)
918{
919 /*
920 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
921 * we can "construct" a session to give us the desired check - i.e. to
922 * find if there's a session in the hash table that would conflict with
923 * any new session built out of this id/id_len and the ssl_version in use
924 * by this SSL.
925 */
926 SSL_SESSION r, *p;
927
928 if (id_len > sizeof(r.session_id))
929 return 0;
930
931 r.ssl_version = ssl->version;
932 r.session_id_length = id_len;
933 memcpy(r.session_id, id, id_len);
934
935 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
936 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
937 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
938 return (p != NULL);
939}
940
941int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
942{
943 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
944}
945
946int SSL_set_purpose(SSL *s, int purpose)
947{
948 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
949}
950
951int SSL_CTX_set_trust(SSL_CTX *s, int trust)
952{
953 return X509_VERIFY_PARAM_set_trust(s->param, trust);
954}
955
956int SSL_set_trust(SSL *s, int trust)
957{
958 return X509_VERIFY_PARAM_set_trust(s->param, trust);
959}
960
961int SSL_set1_host(SSL *s, const char *hostname)
962{
963 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
964}
965
966int SSL_add1_host(SSL *s, const char *hostname)
967{
968 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
969}
970
971void SSL_set_hostflags(SSL *s, unsigned int flags)
972{
973 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
974}
975
976const char *SSL_get0_peername(SSL *s)
977{
978 return X509_VERIFY_PARAM_get0_peername(s->param);
979}
980
981int SSL_CTX_dane_enable(SSL_CTX *ctx)
982{
983 return dane_ctx_enable(&ctx->dane);
984}
985
986unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
987{
988 unsigned long orig = ctx->dane.flags;
989
990 ctx->dane.flags |= flags;
991 return orig;
992}
993
994unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
995{
996 unsigned long orig = ctx->dane.flags;
997
998 ctx->dane.flags &= ~flags;
999 return orig;
1000}
1001
1002int SSL_dane_enable(SSL *s, const char *basedomain)
1003{
1004 SSL_DANE *dane = &s->dane;
1005
1006 if (s->ctx->dane.mdmax == 0) {
1007 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1008 return 0;
1009 }
1010 if (dane->trecs != NULL) {
1011 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1012 return 0;
1013 }
1014
1015 /*
1016 * Default SNI name. This rejects empty names, while set1_host below
1017 * accepts them and disables host name checks. To avoid side-effects with
1018 * invalid input, set the SNI name first.
1019 */
1020 if (s->ext.hostname == NULL) {
1021 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1022 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1023 return -1;
1024 }
1025 }
1026
1027 /* Primary RFC6125 reference identifier */
1028 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1029 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1030 return -1;
1031 }
1032
1033 dane->mdpth = -1;
1034 dane->pdpth = -1;
1035 dane->dctx = &s->ctx->dane;
1036 dane->trecs = sk_danetls_record_new_null();
1037
1038 if (dane->trecs == NULL) {
1039 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1040 return -1;
1041 }
1042 return 1;
1043}
1044
1045unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1046{
1047 unsigned long orig = ssl->dane.flags;
1048
1049 ssl->dane.flags |= flags;
1050 return orig;
1051}
1052
1053unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1054{
1055 unsigned long orig = ssl->dane.flags;
1056
1057 ssl->dane.flags &= ~flags;
1058 return orig;
1059}
1060
1061int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1062{
1063 SSL_DANE *dane = &s->dane;
1064
1065 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1066 return -1;
1067 if (dane->mtlsa) {
1068 if (mcert)
1069 *mcert = dane->mcert;
1070 if (mspki)
1071 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1072 }
1073 return dane->mdpth;
1074}
1075
1076int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1077 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1078{
1079 SSL_DANE *dane = &s->dane;
1080
1081 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1082 return -1;
1083 if (dane->mtlsa) {
1084 if (usage)
1085 *usage = dane->mtlsa->usage;
1086 if (selector)
1087 *selector = dane->mtlsa->selector;
1088 if (mtype)
1089 *mtype = dane->mtlsa->mtype;
1090 if (data)
1091 *data = dane->mtlsa->data;
1092 if (dlen)
1093 *dlen = dane->mtlsa->dlen;
1094 }
1095 return dane->mdpth;
1096}
1097
1098SSL_DANE *SSL_get0_dane(SSL *s)
1099{
1100 return &s->dane;
1101}
1102
1103int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1104 uint8_t mtype, unsigned const char *data, size_t dlen)
1105{
1106 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1107}
1108
1109int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1110 uint8_t ord)
1111{
1112 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1113}
1114
1115int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1116{
1117 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1118}
1119
1120int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1121{
1122 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1123}
1124
1125X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1126{
1127 return ctx->param;
1128}
1129
1130X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1131{
1132 return ssl->param;
1133}
1134
1135void SSL_certs_clear(SSL *s)
1136{
1137 ssl_cert_clear_certs(s->cert);
1138}
1139
1140void SSL_free(SSL *s)
1141{
1142 int i;
1143
1144 if (s == NULL)
1145 return;
1146 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1147 REF_PRINT_COUNT("SSL", s);
1148 if (i > 0)
1149 return;
1150 REF_ASSERT_ISNT(i < 0);
1151
1152 X509_VERIFY_PARAM_free(s->param);
1153 dane_final(&s->dane);
1154 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1155
1156 /* Ignore return value */
1157 ssl_free_wbio_buffer(s);
1158
1159 BIO_free_all(s->wbio);
1160 BIO_free_all(s->rbio);
1161
1162 BUF_MEM_free(s->init_buf);
1163
1164 /* add extra stuff */
1165 sk_SSL_CIPHER_free(s->cipher_list);
1166 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1167 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1168 sk_SSL_CIPHER_free(s->peer_ciphers);
1169
1170 /* Make the next call work :-) */
1171 if (s->session != NULL) {
1172 ssl_clear_bad_session(s);
1173 SSL_SESSION_free(s->session);
1174 }
1175 SSL_SESSION_free(s->psksession);
1176 OPENSSL_free(s->psksession_id);
1177
1178 clear_ciphers(s);
1179
1180 ssl_cert_free(s->cert);
1181 OPENSSL_free(s->shared_sigalgs);
1182 /* Free up if allocated */
1183
1184 OPENSSL_free(s->ext.hostname);
1185 SSL_CTX_free(s->session_ctx);
1186#ifndef OPENSSL_NO_EC
1187 OPENSSL_free(s->ext.ecpointformats);
1188 OPENSSL_free(s->ext.peer_ecpointformats);
1189 OPENSSL_free(s->ext.supportedgroups);
1190 OPENSSL_free(s->ext.peer_supportedgroups);
1191#endif /* OPENSSL_NO_EC */
1192 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1193#ifndef OPENSSL_NO_OCSP
1194 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1195#endif
1196#ifndef OPENSSL_NO_CT
1197 SCT_LIST_free(s->scts);
1198 OPENSSL_free(s->ext.scts);
1199#endif
1200 OPENSSL_free(s->ext.ocsp.resp);
1201 OPENSSL_free(s->ext.alpn);
1202 OPENSSL_free(s->ext.tls13_cookie);
1203 OPENSSL_free(s->clienthello);
1204 OPENSSL_free(s->pha_context);
1205 EVP_MD_CTX_free(s->pha_dgst);
1206
1207 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1208 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1209
1210 sk_X509_pop_free(s->verified_chain, X509_free);
1211
1212 if (s->method != NULL)
1213 s->method->ssl_free(s);
1214
1215 RECORD_LAYER_release(&s->rlayer);
1216
1217 SSL_CTX_free(s->ctx);
1218
1219 ASYNC_WAIT_CTX_free(s->waitctx);
1220
1221#if !defined(OPENSSL_NO_NEXTPROTONEG)
1222 OPENSSL_free(s->ext.npn);
1223#endif
1224
1225#ifndef OPENSSL_NO_SRTP
1226 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1227#endif
1228
1229 CRYPTO_THREAD_lock_free(s->lock);
1230
1231 OPENSSL_free(s);
1232}
1233
1234void SSL_set0_rbio(SSL *s, BIO *rbio)
1235{
1236 BIO_free_all(s->rbio);
1237 s->rbio = rbio;
1238}
1239
1240void SSL_set0_wbio(SSL *s, BIO *wbio)
1241{
1242 /*
1243 * If the output buffering BIO is still in place, remove it
1244 */
1245 if (s->bbio != NULL)
1246 s->wbio = BIO_pop(s->wbio);
1247
1248 BIO_free_all(s->wbio);
1249 s->wbio = wbio;
1250
1251 /* Re-attach |bbio| to the new |wbio|. */
1252 if (s->bbio != NULL)
1253 s->wbio = BIO_push(s->bbio, s->wbio);
1254}
1255
1256void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1257{
1258 /*
1259 * For historical reasons, this function has many different cases in
1260 * ownership handling.
1261 */
1262
1263 /* If nothing has changed, do nothing */
1264 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1265 return;
1266
1267 /*
1268 * If the two arguments are equal then one fewer reference is granted by the
1269 * caller than we want to take
1270 */
1271 if (rbio != NULL && rbio == wbio)
1272 BIO_up_ref(rbio);
1273
1274 /*
1275 * If only the wbio is changed only adopt one reference.
1276 */
1277 if (rbio == SSL_get_rbio(s)) {
1278 SSL_set0_wbio(s, wbio);
1279 return;
1280 }
1281 /*
1282 * There is an asymmetry here for historical reasons. If only the rbio is
1283 * changed AND the rbio and wbio were originally different, then we only
1284 * adopt one reference.
1285 */
1286 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1287 SSL_set0_rbio(s, rbio);
1288 return;
1289 }
1290
1291 /* Otherwise, adopt both references. */
1292 SSL_set0_rbio(s, rbio);
1293 SSL_set0_wbio(s, wbio);
1294}
1295
1296BIO *SSL_get_rbio(const SSL *s)
1297{
1298 return s->rbio;
1299}
1300
1301BIO *SSL_get_wbio(const SSL *s)
1302{
1303 if (s->bbio != NULL) {
1304 /*
1305 * If |bbio| is active, the true caller-configured BIO is its
1306 * |next_bio|.
1307 */
1308 return BIO_next(s->bbio);
1309 }
1310 return s->wbio;
1311}
1312
1313int SSL_get_fd(const SSL *s)
1314{
1315 return SSL_get_rfd(s);
1316}
1317
1318int SSL_get_rfd(const SSL *s)
1319{
1320 int ret = -1;
1321 BIO *b, *r;
1322
1323 b = SSL_get_rbio(s);
1324 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1325 if (r != NULL)
1326 BIO_get_fd(r, &ret);
1327 return ret;
1328}
1329
1330int SSL_get_wfd(const SSL *s)
1331{
1332 int ret = -1;
1333 BIO *b, *r;
1334
1335 b = SSL_get_wbio(s);
1336 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1337 if (r != NULL)
1338 BIO_get_fd(r, &ret);
1339 return ret;
1340}
1341
1342#ifndef OPENSSL_NO_SOCK
1343int SSL_set_fd(SSL *s, int fd)
1344{
1345 int ret = 0;
1346 BIO *bio = NULL;
1347
1348 bio = BIO_new(BIO_s_socket());
1349
1350 if (bio == NULL) {
1351 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1352 goto err;
1353 }
1354 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1355 SSL_set_bio(s, bio, bio);
1356 ret = 1;
1357 err:
1358 return ret;
1359}
1360
1361int SSL_set_wfd(SSL *s, int fd)
1362{
1363 BIO *rbio = SSL_get_rbio(s);
1364
1365 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1366 || (int)BIO_get_fd(rbio, NULL) != fd) {
1367 BIO *bio = BIO_new(BIO_s_socket());
1368
1369 if (bio == NULL) {
1370 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1371 return 0;
1372 }
1373 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1374 SSL_set0_wbio(s, bio);
1375 } else {
1376 BIO_up_ref(rbio);
1377 SSL_set0_wbio(s, rbio);
1378 }
1379 return 1;
1380}
1381
1382int SSL_set_rfd(SSL *s, int fd)
1383{
1384 BIO *wbio = SSL_get_wbio(s);
1385
1386 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1387 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1388 BIO *bio = BIO_new(BIO_s_socket());
1389
1390 if (bio == NULL) {
1391 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1392 return 0;
1393 }
1394 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1395 SSL_set0_rbio(s, bio);
1396 } else {
1397 BIO_up_ref(wbio);
1398 SSL_set0_rbio(s, wbio);
1399 }
1400
1401 return 1;
1402}
1403#endif
1404
1405/* return length of latest Finished message we sent, copy to 'buf' */
1406size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1407{
1408 size_t ret = 0;
1409
1410 if (s->s3 != NULL) {
1411 ret = s->s3->tmp.finish_md_len;
1412 if (count > ret)
1413 count = ret;
1414 memcpy(buf, s->s3->tmp.finish_md, count);
1415 }
1416 return ret;
1417}
1418
1419/* return length of latest Finished message we expected, copy to 'buf' */
1420size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1421{
1422 size_t ret = 0;
1423
1424 if (s->s3 != NULL) {
1425 ret = s->s3->tmp.peer_finish_md_len;
1426 if (count > ret)
1427 count = ret;
1428 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1429 }
1430 return ret;
1431}
1432
1433int SSL_get_verify_mode(const SSL *s)
1434{
1435 return s->verify_mode;
1436}
1437
1438int SSL_get_verify_depth(const SSL *s)
1439{
1440 return X509_VERIFY_PARAM_get_depth(s->param);
1441}
1442
1443int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1444 return s->verify_callback;
1445}
1446
1447int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1448{
1449 return ctx->verify_mode;
1450}
1451
1452int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1453{
1454 return X509_VERIFY_PARAM_get_depth(ctx->param);
1455}
1456
1457int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1458 return ctx->default_verify_callback;
1459}
1460
1461void SSL_set_verify(SSL *s, int mode,
1462 int (*callback) (int ok, X509_STORE_CTX *ctx))
1463{
1464 s->verify_mode = mode;
1465 if (callback != NULL)
1466 s->verify_callback = callback;
1467}
1468
1469void SSL_set_verify_depth(SSL *s, int depth)
1470{
1471 X509_VERIFY_PARAM_set_depth(s->param, depth);
1472}
1473
1474void SSL_set_read_ahead(SSL *s, int yes)
1475{
1476 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1477}
1478
1479int SSL_get_read_ahead(const SSL *s)
1480{
1481 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1482}
1483
1484int SSL_pending(const SSL *s)
1485{
1486 size_t pending = s->method->ssl_pending(s);
1487
1488 /*
1489 * SSL_pending cannot work properly if read-ahead is enabled
1490 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1491 * impossible to fix since SSL_pending cannot report errors that may be
1492 * observed while scanning the new data. (Note that SSL_pending() is
1493 * often used as a boolean value, so we'd better not return -1.)
1494 *
1495 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1496 * we just return INT_MAX.
1497 */
1498 return pending < INT_MAX ? (int)pending : INT_MAX;
1499}
1500
1501int SSL_has_pending(const SSL *s)
1502{
1503 /*
1504 * Similar to SSL_pending() but returns a 1 to indicate that we have
1505 * unprocessed data available or 0 otherwise (as opposed to the number of
1506 * bytes available). Unlike SSL_pending() this will take into account
1507 * read_ahead data. A 1 return simply indicates that we have unprocessed
1508 * data. That data may not result in any application data, or we may fail
1509 * to parse the records for some reason.
1510 */
1511 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1512 return 1;
1513
1514 return RECORD_LAYER_read_pending(&s->rlayer);
1515}
1516
1517X509 *SSL_get_peer_certificate(const SSL *s)
1518{
1519 X509 *r;
1520
1521 if ((s == NULL) || (s->session == NULL))
1522 r = NULL;
1523 else
1524 r = s->session->peer;
1525
1526 if (r == NULL)
1527 return r;
1528
1529 X509_up_ref(r);
1530
1531 return r;
1532}
1533
1534STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1535{
1536 STACK_OF(X509) *r;
1537
1538 if ((s == NULL) || (s->session == NULL))
1539 r = NULL;
1540 else
1541 r = s->session->peer_chain;
1542
1543 /*
1544 * If we are a client, cert_chain includes the peer's own certificate; if
1545 * we are a server, it does not.
1546 */
1547
1548 return r;
1549}
1550
1551/*
1552 * Now in theory, since the calling process own 't' it should be safe to
1553 * modify. We need to be able to read f without being hassled
1554 */
1555int SSL_copy_session_id(SSL *t, const SSL *f)
1556{
1557 int i;
1558 /* Do we need to to SSL locking? */
1559 if (!SSL_set_session(t, SSL_get_session(f))) {
1560 return 0;
1561 }
1562
1563 /*
1564 * what if we are setup for one protocol version but want to talk another
1565 */
1566 if (t->method != f->method) {
1567 t->method->ssl_free(t);
1568 t->method = f->method;
1569 if (t->method->ssl_new(t) == 0)
1570 return 0;
1571 }
1572
1573 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1574 ssl_cert_free(t->cert);
1575 t->cert = f->cert;
1576 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1577 return 0;
1578 }
1579
1580 return 1;
1581}
1582
1583/* Fix this so it checks all the valid key/cert options */
1584int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1585{
1586 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1587 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1588 return 0;
1589 }
1590 if (ctx->cert->key->privatekey == NULL) {
1591 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1592 return 0;
1593 }
1594 return X509_check_private_key
1595 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1596}
1597
1598/* Fix this function so that it takes an optional type parameter */
1599int SSL_check_private_key(const SSL *ssl)
1600{
1601 if (ssl == NULL) {
1602 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1603 return 0;
1604 }
1605 if (ssl->cert->key->x509 == NULL) {
1606 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1607 return 0;
1608 }
1609 if (ssl->cert->key->privatekey == NULL) {
1610 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1611 return 0;
1612 }
1613 return X509_check_private_key(ssl->cert->key->x509,
1614 ssl->cert->key->privatekey);
1615}
1616
1617int SSL_waiting_for_async(SSL *s)
1618{
1619 if (s->job)
1620 return 1;
1621
1622 return 0;
1623}
1624
1625int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1626{
1627 ASYNC_WAIT_CTX *ctx = s->waitctx;
1628
1629 if (ctx == NULL)
1630 return 0;
1631 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1632}
1633
1634int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1635 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1636{
1637 ASYNC_WAIT_CTX *ctx = s->waitctx;
1638
1639 if (ctx == NULL)
1640 return 0;
1641 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1642 numdelfds);
1643}
1644
1645int SSL_accept(SSL *s)
1646{
1647 if (s->handshake_func == NULL) {
1648 /* Not properly initialized yet */
1649 SSL_set_accept_state(s);
1650 }
1651
1652 return SSL_do_handshake(s);
1653}
1654
1655int SSL_connect(SSL *s)
1656{
1657 if (s->handshake_func == NULL) {
1658 /* Not properly initialized yet */
1659 SSL_set_connect_state(s);
1660 }
1661
1662 return SSL_do_handshake(s);
1663}
1664
1665long SSL_get_default_timeout(const SSL *s)
1666{
1667 return s->method->get_timeout();
1668}
1669
1670static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1671 int (*func) (void *))
1672{
1673 int ret;
1674 if (s->waitctx == NULL) {
1675 s->waitctx = ASYNC_WAIT_CTX_new();
1676 if (s->waitctx == NULL)
1677 return -1;
1678 }
1679 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1680 sizeof(struct ssl_async_args))) {
1681 case ASYNC_ERR:
1682 s->rwstate = SSL_NOTHING;
1683 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1684 return -1;
1685 case ASYNC_PAUSE:
1686 s->rwstate = SSL_ASYNC_PAUSED;
1687 return -1;
1688 case ASYNC_NO_JOBS:
1689 s->rwstate = SSL_ASYNC_NO_JOBS;
1690 return -1;
1691 case ASYNC_FINISH:
1692 s->job = NULL;
1693 return ret;
1694 default:
1695 s->rwstate = SSL_NOTHING;
1696 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1697 /* Shouldn't happen */
1698 return -1;
1699 }
1700}
1701
1702static int ssl_io_intern(void *vargs)
1703{
1704 struct ssl_async_args *args;
1705 SSL *s;
1706 void *buf;
1707 size_t num;
1708
1709 args = (struct ssl_async_args *)vargs;
1710 s = args->s;
1711 buf = args->buf;
1712 num = args->num;
1713 switch (args->type) {
1714 case READFUNC:
1715 return args->f.func_read(s, buf, num, &s->asyncrw);
1716 case WRITEFUNC:
1717 return args->f.func_write(s, buf, num, &s->asyncrw);
1718 case OTHERFUNC:
1719 return args->f.func_other(s);
1720 }
1721 return -1;
1722}
1723
1724int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1725{
1726 if (s->handshake_func == NULL) {
1727 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1728 return -1;
1729 }
1730
1731 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1732 s->rwstate = SSL_NOTHING;
1733 return 0;
1734 }
1735
1736 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1737 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1738 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1739 return 0;
1740 }
1741 /*
1742 * If we are a client and haven't received the ServerHello etc then we
1743 * better do that
1744 */
1745 ossl_statem_check_finish_init(s, 0);
1746
1747 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1748 struct ssl_async_args args;
1749 int ret;
1750
1751 args.s = s;
1752 args.buf = buf;
1753 args.num = num;
1754 args.type = READFUNC;
1755 args.f.func_read = s->method->ssl_read;
1756
1757 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1758 *readbytes = s->asyncrw;
1759 return ret;
1760 } else {
1761 return s->method->ssl_read(s, buf, num, readbytes);
1762 }
1763}
1764
1765int SSL_read(SSL *s, void *buf, int num)
1766{
1767 int ret;
1768 size_t readbytes;
1769
1770 if (num < 0) {
1771 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1772 return -1;
1773 }
1774
1775 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1776
1777 /*
1778 * The cast is safe here because ret should be <= INT_MAX because num is
1779 * <= INT_MAX
1780 */
1781 if (ret > 0)
1782 ret = (int)readbytes;
1783
1784 return ret;
1785}
1786
1787int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1788{
1789 int ret = ssl_read_internal(s, buf, num, readbytes);
1790
1791 if (ret < 0)
1792 ret = 0;
1793 return ret;
1794}
1795
1796int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1797{
1798 int ret;
1799
1800 if (!s->server) {
1801 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1802 return SSL_READ_EARLY_DATA_ERROR;
1803 }
1804
1805 switch (s->early_data_state) {
1806 case SSL_EARLY_DATA_NONE:
1807 if (!SSL_in_before(s)) {
1808 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1809 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1810 return SSL_READ_EARLY_DATA_ERROR;
1811 }
1812 /* fall through */
1813
1814 case SSL_EARLY_DATA_ACCEPT_RETRY:
1815 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1816 ret = SSL_accept(s);
1817 if (ret <= 0) {
1818 /* NBIO or error */
1819 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1820 return SSL_READ_EARLY_DATA_ERROR;
1821 }
1822 /* fall through */
1823
1824 case SSL_EARLY_DATA_READ_RETRY:
1825 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1826 s->early_data_state = SSL_EARLY_DATA_READING;
1827 ret = SSL_read_ex(s, buf, num, readbytes);
1828 /*
1829 * State machine will update early_data_state to
1830 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1831 * message
1832 */
1833 if (ret > 0 || (ret <= 0 && s->early_data_state
1834 != SSL_EARLY_DATA_FINISHED_READING)) {
1835 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1836 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1837 : SSL_READ_EARLY_DATA_ERROR;
1838 }
1839 } else {
1840 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1841 }
1842 *readbytes = 0;
1843 return SSL_READ_EARLY_DATA_FINISH;
1844
1845 default:
1846 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1847 return SSL_READ_EARLY_DATA_ERROR;
1848 }
1849}
1850
1851int SSL_get_early_data_status(const SSL *s)
1852{
1853 return s->ext.early_data;
1854}
1855
1856static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1857{
1858 if (s->handshake_func == NULL) {
1859 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1860 return -1;
1861 }
1862
1863 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1864 return 0;
1865 }
1866 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1867 struct ssl_async_args args;
1868 int ret;
1869
1870 args.s = s;
1871 args.buf = buf;
1872 args.num = num;
1873 args.type = READFUNC;
1874 args.f.func_read = s->method->ssl_peek;
1875
1876 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1877 *readbytes = s->asyncrw;
1878 return ret;
1879 } else {
1880 return s->method->ssl_peek(s, buf, num, readbytes);
1881 }
1882}
1883
1884int SSL_peek(SSL *s, void *buf, int num)
1885{
1886 int ret;
1887 size_t readbytes;
1888
1889 if (num < 0) {
1890 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1891 return -1;
1892 }
1893
1894 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1895
1896 /*
1897 * The cast is safe here because ret should be <= INT_MAX because num is
1898 * <= INT_MAX
1899 */
1900 if (ret > 0)
1901 ret = (int)readbytes;
1902
1903 return ret;
1904}
1905
1906
1907int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1908{
1909 int ret = ssl_peek_internal(s, buf, num, readbytes);
1910
1911 if (ret < 0)
1912 ret = 0;
1913 return ret;
1914}
1915
1916int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1917{
1918 if (s->handshake_func == NULL) {
1919 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1920 return -1;
1921 }
1922
1923 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1924 s->rwstate = SSL_NOTHING;
1925 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1926 return -1;
1927 }
1928
1929 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1930 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1931 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1932 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1933 return 0;
1934 }
1935 /* If we are a client and haven't sent the Finished we better do that */
1936 ossl_statem_check_finish_init(s, 1);
1937
1938 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1939 int ret;
1940 struct ssl_async_args args;
1941
1942 args.s = s;
1943 args.buf = (void *)buf;
1944 args.num = num;
1945 args.type = WRITEFUNC;
1946 args.f.func_write = s->method->ssl_write;
1947
1948 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1949 *written = s->asyncrw;
1950 return ret;
1951 } else {
1952 return s->method->ssl_write(s, buf, num, written);
1953 }
1954}
1955
1956int SSL_write(SSL *s, const void *buf, int num)
1957{
1958 int ret;
1959 size_t written;
1960
1961 if (num < 0) {
1962 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1963 return -1;
1964 }
1965
1966 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1967
1968 /*
1969 * The cast is safe here because ret should be <= INT_MAX because num is
1970 * <= INT_MAX
1971 */
1972 if (ret > 0)
1973 ret = (int)written;
1974
1975 return ret;
1976}
1977
1978int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1979{
1980 int ret = ssl_write_internal(s, buf, num, written);
1981
1982 if (ret < 0)
1983 ret = 0;
1984 return ret;
1985}
1986
1987int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1988{
1989 int ret, early_data_state;
1990 size_t writtmp;
1991 uint32_t partialwrite;
1992
1993 switch (s->early_data_state) {
1994 case SSL_EARLY_DATA_NONE:
1995 if (s->server
1996 || !SSL_in_before(s)
1997 || ((s->session == NULL || s->session->ext.max_early_data == 0)
1998 && (s->psk_use_session_cb == NULL))) {
1999 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2000 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2001 return 0;
2002 }
2003 /* fall through */
2004
2005 case SSL_EARLY_DATA_CONNECT_RETRY:
2006 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2007 ret = SSL_connect(s);
2008 if (ret <= 0) {
2009 /* NBIO or error */
2010 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2011 return 0;
2012 }
2013 /* fall through */
2014
2015 case SSL_EARLY_DATA_WRITE_RETRY:
2016 s->early_data_state = SSL_EARLY_DATA_WRITING;
2017 /*
2018 * We disable partial write for early data because we don't keep track
2019 * of how many bytes we've written between the SSL_write_ex() call and
2020 * the flush if the flush needs to be retried)
2021 */
2022 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2023 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2024 ret = SSL_write_ex(s, buf, num, &writtmp);
2025 s->mode |= partialwrite;
2026 if (!ret) {
2027 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2028 return ret;
2029 }
2030 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2031 /* fall through */
2032
2033 case SSL_EARLY_DATA_WRITE_FLUSH:
2034 /* The buffering BIO is still in place so we need to flush it */
2035 if (statem_flush(s) != 1)
2036 return 0;
2037 *written = num;
2038 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2039 return 1;
2040
2041 case SSL_EARLY_DATA_FINISHED_READING:
2042 case SSL_EARLY_DATA_READ_RETRY:
2043 early_data_state = s->early_data_state;
2044 /* We are a server writing to an unauthenticated client */
2045 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2046 ret = SSL_write_ex(s, buf, num, written);
2047 /* The buffering BIO is still in place */
2048 if (ret)
2049 (void)BIO_flush(s->wbio);
2050 s->early_data_state = early_data_state;
2051 return ret;
2052
2053 default:
2054 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2055 return 0;
2056 }
2057}
2058
2059int SSL_shutdown(SSL *s)
2060{
2061 /*
2062 * Note that this function behaves differently from what one might
2063 * expect. Return values are 0 for no success (yet), 1 for success; but
2064 * calling it once is usually not enough, even if blocking I/O is used
2065 * (see ssl3_shutdown).
2066 */
2067
2068 if (s->handshake_func == NULL) {
2069 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2070 return -1;
2071 }
2072
2073 if (!SSL_in_init(s)) {
2074 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2075 struct ssl_async_args args;
2076
2077 args.s = s;
2078 args.type = OTHERFUNC;
2079 args.f.func_other = s->method->ssl_shutdown;
2080
2081 return ssl_start_async_job(s, &args, ssl_io_intern);
2082 } else {
2083 return s->method->ssl_shutdown(s);
2084 }
2085 } else {
2086 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2087 return -1;
2088 }
2089}
2090
2091int SSL_key_update(SSL *s, int updatetype)
2092{
2093 /*
2094 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2095 * negotiated, and that it is appropriate to call SSL_key_update() instead
2096 * of SSL_renegotiate().
2097 */
2098 if (!SSL_IS_TLS13(s)) {
2099 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2100 return 0;
2101 }
2102
2103 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2104 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2105 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2106 return 0;
2107 }
2108
2109 if (!SSL_is_init_finished(s)) {
2110 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2111 return 0;
2112 }
2113
2114 ossl_statem_set_in_init(s, 1);
2115 s->key_update = updatetype;
2116 return 1;
2117}
2118
2119int SSL_get_key_update_type(const SSL *s)
2120{
2121 return s->key_update;
2122}
2123
2124int SSL_renegotiate(SSL *s)
2125{
2126 if (SSL_IS_TLS13(s)) {
2127 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2128 return 0;
2129 }
2130
2131 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2132 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2133 return 0;
2134 }
2135
2136 s->renegotiate = 1;
2137 s->new_session = 1;
2138
2139 return s->method->ssl_renegotiate(s);
2140}
2141
2142int SSL_renegotiate_abbreviated(SSL *s)
2143{
2144 if (SSL_IS_TLS13(s)) {
2145 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2146 return 0;
2147 }
2148
2149 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2150 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2151 return 0;
2152 }
2153
2154 s->renegotiate = 1;
2155 s->new_session = 0;
2156
2157 return s->method->ssl_renegotiate(s);
2158}
2159
2160int SSL_renegotiate_pending(const SSL *s)
2161{
2162 /*
2163 * becomes true when negotiation is requested; false again once a
2164 * handshake has finished
2165 */
2166 return (s->renegotiate != 0);
2167}
2168
2169long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2170{
2171 long l;
2172
2173 switch (cmd) {
2174 case SSL_CTRL_GET_READ_AHEAD:
2175 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2176 case SSL_CTRL_SET_READ_AHEAD:
2177 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2178 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2179 return l;
2180
2181 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2182 s->msg_callback_arg = parg;
2183 return 1;
2184
2185 case SSL_CTRL_MODE:
2186 return (s->mode |= larg);
2187 case SSL_CTRL_CLEAR_MODE:
2188 return (s->mode &= ~larg);
2189 case SSL_CTRL_GET_MAX_CERT_LIST:
2190 return (long)s->max_cert_list;
2191 case SSL_CTRL_SET_MAX_CERT_LIST:
2192 if (larg < 0)
2193 return 0;
2194 l = (long)s->max_cert_list;
2195 s->max_cert_list = (size_t)larg;
2196 return l;
2197 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2198 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2199 return 0;
2200 s->max_send_fragment = larg;
2201 if (s->max_send_fragment < s->split_send_fragment)
2202 s->split_send_fragment = s->max_send_fragment;
2203 return 1;
2204 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2205 if ((size_t)larg > s->max_send_fragment || larg == 0)
2206 return 0;
2207 s->split_send_fragment = larg;
2208 return 1;
2209 case SSL_CTRL_SET_MAX_PIPELINES:
2210 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2211 return 0;
2212 s->max_pipelines = larg;
2213 if (larg > 1)
2214 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2215 return 1;
2216 case SSL_CTRL_GET_RI_SUPPORT:
2217 if (s->s3)
2218 return s->s3->send_connection_binding;
2219 else
2220 return 0;
2221 case SSL_CTRL_CERT_FLAGS:
2222 return (s->cert->cert_flags |= larg);
2223 case SSL_CTRL_CLEAR_CERT_FLAGS:
2224 return (s->cert->cert_flags &= ~larg);
2225
2226 case SSL_CTRL_GET_RAW_CIPHERLIST:
2227 if (parg) {
2228 if (s->s3->tmp.ciphers_raw == NULL)
2229 return 0;
2230 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2231 return (int)s->s3->tmp.ciphers_rawlen;
2232 } else {
2233 return TLS_CIPHER_LEN;
2234 }
2235 case SSL_CTRL_GET_EXTMS_SUPPORT:
2236 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2237 return -1;
2238 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2239 return 1;
2240 else
2241 return 0;
2242 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2243 return ssl_check_allowed_versions(larg, s->max_proto_version)
2244 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2245 &s->min_proto_version);
2246 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2247 return s->min_proto_version;
2248 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2249 return ssl_check_allowed_versions(s->min_proto_version, larg)
2250 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2251 &s->max_proto_version);
2252 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2253 return s->max_proto_version;
2254 default:
2255 return s->method->ssl_ctrl(s, cmd, larg, parg);
2256 }
2257}
2258
2259long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2260{
2261 switch (cmd) {
2262 case SSL_CTRL_SET_MSG_CALLBACK:
2263 s->msg_callback = (void (*)
2264 (int write_p, int version, int content_type,
2265 const void *buf, size_t len, SSL *ssl,
2266 void *arg))(fp);
2267 return 1;
2268
2269 default:
2270 return s->method->ssl_callback_ctrl(s, cmd, fp);
2271 }
2272}
2273
2274LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2275{
2276 return ctx->sessions;
2277}
2278
2279long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2280{
2281 long l;
2282 /* For some cases with ctx == NULL perform syntax checks */
2283 if (ctx == NULL) {
2284 switch (cmd) {
2285#ifndef OPENSSL_NO_EC
2286 case SSL_CTRL_SET_GROUPS_LIST:
2287 return tls1_set_groups_list(NULL, NULL, parg);
2288#endif
2289 case SSL_CTRL_SET_SIGALGS_LIST:
2290 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2291 return tls1_set_sigalgs_list(NULL, parg, 0);
2292 default:
2293 return 0;
2294 }
2295 }
2296
2297 switch (cmd) {
2298 case SSL_CTRL_GET_READ_AHEAD:
2299 return ctx->read_ahead;
2300 case SSL_CTRL_SET_READ_AHEAD:
2301 l = ctx->read_ahead;
2302 ctx->read_ahead = larg;
2303 return l;
2304
2305 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2306 ctx->msg_callback_arg = parg;
2307 return 1;
2308
2309 case SSL_CTRL_GET_MAX_CERT_LIST:
2310 return (long)ctx->max_cert_list;
2311 case SSL_CTRL_SET_MAX_CERT_LIST:
2312 if (larg < 0)
2313 return 0;
2314 l = (long)ctx->max_cert_list;
2315 ctx->max_cert_list = (size_t)larg;
2316 return l;
2317
2318 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2319 if (larg < 0)
2320 return 0;
2321 l = (long)ctx->session_cache_size;
2322 ctx->session_cache_size = (size_t)larg;
2323 return l;
2324 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2325 return (long)ctx->session_cache_size;
2326 case SSL_CTRL_SET_SESS_CACHE_MODE:
2327 l = ctx->session_cache_mode;
2328 ctx->session_cache_mode = larg;
2329 return l;
2330 case SSL_CTRL_GET_SESS_CACHE_MODE:
2331 return ctx->session_cache_mode;
2332
2333 case SSL_CTRL_SESS_NUMBER:
2334 return lh_SSL_SESSION_num_items(ctx->sessions);
2335 case SSL_CTRL_SESS_CONNECT:
2336 return tsan_load(&ctx->stats.sess_connect);
2337 case SSL_CTRL_SESS_CONNECT_GOOD:
2338 return tsan_load(&ctx->stats.sess_connect_good);
2339 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2340 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2341 case SSL_CTRL_SESS_ACCEPT:
2342 return tsan_load(&ctx->stats.sess_accept);
2343 case SSL_CTRL_SESS_ACCEPT_GOOD:
2344 return tsan_load(&ctx->stats.sess_accept_good);
2345 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2346 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2347 case SSL_CTRL_SESS_HIT:
2348 return tsan_load(&ctx->stats.sess_hit);
2349 case SSL_CTRL_SESS_CB_HIT:
2350 return tsan_load(&ctx->stats.sess_cb_hit);
2351 case SSL_CTRL_SESS_MISSES:
2352 return tsan_load(&ctx->stats.sess_miss);
2353 case SSL_CTRL_SESS_TIMEOUTS:
2354 return tsan_load(&ctx->stats.sess_timeout);
2355 case SSL_CTRL_SESS_CACHE_FULL:
2356 return tsan_load(&ctx->stats.sess_cache_full);
2357 case SSL_CTRL_MODE:
2358 return (ctx->mode |= larg);
2359 case SSL_CTRL_CLEAR_MODE:
2360 return (ctx->mode &= ~larg);
2361 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2362 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2363 return 0;
2364 ctx->max_send_fragment = larg;
2365 if (ctx->max_send_fragment < ctx->split_send_fragment)
2366 ctx->split_send_fragment = ctx->max_send_fragment;
2367 return 1;
2368 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2369 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2370 return 0;
2371 ctx->split_send_fragment = larg;
2372 return 1;
2373 case SSL_CTRL_SET_MAX_PIPELINES:
2374 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2375 return 0;
2376 ctx->max_pipelines = larg;
2377 return 1;
2378 case SSL_CTRL_CERT_FLAGS:
2379 return (ctx->cert->cert_flags |= larg);
2380 case SSL_CTRL_CLEAR_CERT_FLAGS:
2381 return (ctx->cert->cert_flags &= ~larg);
2382 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2383 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2384 && ssl_set_version_bound(ctx->method->version, (int)larg,
2385 &ctx->min_proto_version);
2386 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2387 return ctx->min_proto_version;
2388 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2389 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2390 && ssl_set_version_bound(ctx->method->version, (int)larg,
2391 &ctx->max_proto_version);
2392 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2393 return ctx->max_proto_version;
2394 default:
2395 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2396 }
2397}
2398
2399long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2400{
2401 switch (cmd) {
2402 case SSL_CTRL_SET_MSG_CALLBACK:
2403 ctx->msg_callback = (void (*)
2404 (int write_p, int version, int content_type,
2405 const void *buf, size_t len, SSL *ssl,
2406 void *arg))(fp);
2407 return 1;
2408
2409 default:
2410 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2411 }
2412}
2413
2414int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2415{
2416 if (a->id > b->id)
2417 return 1;
2418 if (a->id < b->id)
2419 return -1;
2420 return 0;
2421}
2422
2423int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2424 const SSL_CIPHER *const *bp)
2425{
2426 if ((*ap)->id > (*bp)->id)
2427 return 1;
2428 if ((*ap)->id < (*bp)->id)
2429 return -1;
2430 return 0;
2431}
2432
2433/** return a STACK of the ciphers available for the SSL and in order of
2434 * preference */
2435STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2436{
2437 if (s != NULL) {
2438 if (s->cipher_list != NULL) {
2439 return s->cipher_list;
2440 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2441 return s->ctx->cipher_list;
2442 }
2443 }
2444 return NULL;
2445}
2446
2447STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2448{
2449 if ((s == NULL) || !s->server)
2450 return NULL;
2451 return s->peer_ciphers;
2452}
2453
2454STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2455{
2456 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2457 int i;
2458
2459 ciphers = SSL_get_ciphers(s);
2460 if (!ciphers)
2461 return NULL;
2462 if (!ssl_set_client_disabled(s))
2463 return NULL;
2464 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2465 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2466 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2467 if (!sk)
2468 sk = sk_SSL_CIPHER_new_null();
2469 if (!sk)
2470 return NULL;
2471 if (!sk_SSL_CIPHER_push(sk, c)) {
2472 sk_SSL_CIPHER_free(sk);
2473 return NULL;
2474 }
2475 }
2476 }
2477 return sk;
2478}
2479
2480/** return a STACK of the ciphers available for the SSL and in order of
2481 * algorithm id */
2482STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2483{
2484 if (s != NULL) {
2485 if (s->cipher_list_by_id != NULL) {
2486 return s->cipher_list_by_id;
2487 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2488 return s->ctx->cipher_list_by_id;
2489 }
2490 }
2491 return NULL;
2492}
2493
2494/** The old interface to get the same thing as SSL_get_ciphers() */
2495const char *SSL_get_cipher_list(const SSL *s, int n)
2496{
2497 const SSL_CIPHER *c;
2498 STACK_OF(SSL_CIPHER) *sk;
2499
2500 if (s == NULL)
2501 return NULL;
2502 sk = SSL_get_ciphers(s);
2503 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2504 return NULL;
2505 c = sk_SSL_CIPHER_value(sk, n);
2506 if (c == NULL)
2507 return NULL;
2508 return c->name;
2509}
2510
2511/** return a STACK of the ciphers available for the SSL_CTX and in order of
2512 * preference */
2513STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2514{
2515 if (ctx != NULL)
2516 return ctx->cipher_list;
2517 return NULL;
2518}
2519
2520/*
2521 * Distinguish between ciphers controlled by set_ciphersuite() and
2522 * set_cipher_list() when counting.
2523 */
2524static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2525{
2526 int i, num = 0;
2527 const SSL_CIPHER *c;
2528
2529 if (sk == NULL)
2530 return 0;
2531 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2532 c = sk_SSL_CIPHER_value(sk, i);
2533 if (c->min_tls >= TLS1_3_VERSION)
2534 continue;
2535 num++;
2536 }
2537 return num;
2538}
2539
2540/** specify the ciphers to be used by default by the SSL_CTX */
2541int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2542{
2543 STACK_OF(SSL_CIPHER) *sk;
2544
2545 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2546 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2547 ctx->cert);
2548 /*
2549 * ssl_create_cipher_list may return an empty stack if it was unable to
2550 * find a cipher matching the given rule string (for example if the rule
2551 * string specifies a cipher which has been disabled). This is not an
2552 * error as far as ssl_create_cipher_list is concerned, and hence
2553 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2554 */
2555 if (sk == NULL)
2556 return 0;
2557 else if (cipher_list_tls12_num(sk) == 0) {
2558 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2559 return 0;
2560 }
2561 return 1;
2562}
2563
2564/** specify the ciphers to be used by the SSL */
2565int SSL_set_cipher_list(SSL *s, const char *str)
2566{
2567 STACK_OF(SSL_CIPHER) *sk;
2568
2569 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2570 &s->cipher_list, &s->cipher_list_by_id, str,
2571 s->cert);
2572 /* see comment in SSL_CTX_set_cipher_list */
2573 if (sk == NULL)
2574 return 0;
2575 else if (cipher_list_tls12_num(sk) == 0) {
2576 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2577 return 0;
2578 }
2579 return 1;
2580}
2581
2582char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2583{
2584 char *p;
2585 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2586 const SSL_CIPHER *c;
2587 int i;
2588
2589 if (!s->server
2590 || s->peer_ciphers == NULL
2591 || size < 2)
2592 return NULL;
2593
2594 p = buf;
2595 clntsk = s->peer_ciphers;
2596 srvrsk = SSL_get_ciphers(s);
2597 if (clntsk == NULL || srvrsk == NULL)
2598 return NULL;
2599
2600 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2601 return NULL;
2602
2603 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2604 int n;
2605
2606 c = sk_SSL_CIPHER_value(clntsk, i);
2607 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2608 continue;
2609
2610 n = strlen(c->name);
2611 if (n + 1 > size) {
2612 if (p != buf)
2613 --p;
2614 *p = '\0';
2615 return buf;
2616 }
2617 strcpy(p, c->name);
2618 p += n;
2619 *(p++) = ':';
2620 size -= n + 1;
2621 }
2622 p[-1] = '\0';
2623 return buf;
2624}
2625
2626/**
2627 * Return the requested servername (SNI) value. Note that the behaviour varies
2628 * depending on:
2629 * - whether this is called by the client or the server,
2630 * - if we are before or during/after the handshake,
2631 * - if a resumption or normal handshake is being attempted/has occurred
2632 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2633 *
2634 * Note that only the host_name type is defined (RFC 3546).
2635 */
2636const char *SSL_get_servername(const SSL *s, const int type)
2637{
2638 /*
2639 * If we don't know if we are the client or the server yet then we assume
2640 * client.
2641 */
2642 int server = s->handshake_func == NULL ? 0 : s->server;
2643 if (type != TLSEXT_NAMETYPE_host_name)
2644 return NULL;
2645
2646 if (server) {
2647 /**
2648 * Server side
2649 * In TLSv1.3 on the server SNI is not associated with the session
2650 * but in TLSv1.2 or below it is.
2651 *
2652 * Before the handshake:
2653 * - return NULL
2654 *
2655 * During/after the handshake (TLSv1.2 or below resumption occurred):
2656 * - If a servername was accepted by the server in the original
2657 * handshake then it will return that servername, or NULL otherwise.
2658 *
2659 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2660 * - The function will return the servername requested by the client in
2661 * this handshake or NULL if none was requested.
2662 */
2663 if (s->hit && !SSL_IS_TLS13(s))
2664 return s->session->ext.hostname;
2665 } else {
2666 /**
2667 * Client side
2668 *
2669 * Before the handshake:
2670 * - If a servername has been set via a call to
2671 * SSL_set_tlsext_host_name() then it will return that servername
2672 * - If one has not been set, but a TLSv1.2 resumption is being
2673 * attempted and the session from the original handshake had a
2674 * servername accepted by the server then it will return that
2675 * servername
2676 * - Otherwise it returns NULL
2677 *
2678 * During/after the handshake (TLSv1.2 or below resumption occurred):
2679 * - If the session from the orignal handshake had a servername accepted
2680 * by the server then it will return that servername.
2681 * - Otherwise it returns the servername set via
2682 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2683 *
2684 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2685 * - It will return the servername set via SSL_set_tlsext_host_name()
2686 * (or NULL if it was not called).
2687 */
2688 if (SSL_in_before(s)) {
2689 if (s->ext.hostname == NULL
2690 && s->session != NULL
2691 && s->session->ssl_version != TLS1_3_VERSION)
2692 return s->session->ext.hostname;
2693 } else {
2694 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2695 return s->session->ext.hostname;
2696 }
2697 }
2698
2699 return s->ext.hostname;
2700}
2701
2702int SSL_get_servername_type(const SSL *s)
2703{
2704 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2705 return TLSEXT_NAMETYPE_host_name;
2706 return -1;
2707}
2708
2709/*
2710 * SSL_select_next_proto implements the standard protocol selection. It is
2711 * expected that this function is called from the callback set by
2712 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2713 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2714 * not included in the length. A byte string of length 0 is invalid. No byte
2715 * string may be truncated. The current, but experimental algorithm for
2716 * selecting the protocol is: 1) If the server doesn't support NPN then this
2717 * is indicated to the callback. In this case, the client application has to
2718 * abort the connection or have a default application level protocol. 2) If
2719 * the server supports NPN, but advertises an empty list then the client
2720 * selects the first protocol in its list, but indicates via the API that this
2721 * fallback case was enacted. 3) Otherwise, the client finds the first
2722 * protocol in the server's list that it supports and selects this protocol.
2723 * This is because it's assumed that the server has better information about
2724 * which protocol a client should use. 4) If the client doesn't support any
2725 * of the server's advertised protocols, then this is treated the same as
2726 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2727 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2728 */
2729int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2730 const unsigned char *server,
2731 unsigned int server_len,
2732 const unsigned char *client, unsigned int client_len)
2733{
2734 unsigned int i, j;
2735 const unsigned char *result;
2736 int status = OPENSSL_NPN_UNSUPPORTED;
2737
2738 /*
2739 * For each protocol in server preference order, see if we support it.
2740 */
2741 for (i = 0; i < server_len;) {
2742 for (j = 0; j < client_len;) {
2743 if (server[i] == client[j] &&
2744 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2745 /* We found a match */
2746 result = &server[i];
2747 status = OPENSSL_NPN_NEGOTIATED;
2748 goto found;
2749 }
2750 j += client[j];
2751 j++;
2752 }
2753 i += server[i];
2754 i++;
2755 }
2756
2757 /* There's no overlap between our protocols and the server's list. */
2758 result = client;
2759 status = OPENSSL_NPN_NO_OVERLAP;
2760
2761 found:
2762 *out = (unsigned char *)result + 1;
2763 *outlen = result[0];
2764 return status;
2765}
2766
2767#ifndef OPENSSL_NO_NEXTPROTONEG
2768/*
2769 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2770 * client's requested protocol for this connection and returns 0. If the
2771 * client didn't request any protocol, then *data is set to NULL. Note that
2772 * the client can request any protocol it chooses. The value returned from
2773 * this function need not be a member of the list of supported protocols
2774 * provided by the callback.
2775 */
2776void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2777 unsigned *len)
2778{
2779 *data = s->ext.npn;
2780 if (!*data) {
2781 *len = 0;
2782 } else {
2783 *len = (unsigned int)s->ext.npn_len;
2784 }
2785}
2786
2787/*
2788 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2789 * a TLS server needs a list of supported protocols for Next Protocol
2790 * Negotiation. The returned list must be in wire format. The list is
2791 * returned by setting |out| to point to it and |outlen| to its length. This
2792 * memory will not be modified, but one should assume that the SSL* keeps a
2793 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2794 * wishes to advertise. Otherwise, no such extension will be included in the
2795 * ServerHello.
2796 */
2797void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2798 SSL_CTX_npn_advertised_cb_func cb,
2799 void *arg)
2800{
2801 ctx->ext.npn_advertised_cb = cb;
2802 ctx->ext.npn_advertised_cb_arg = arg;
2803}
2804
2805/*
2806 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2807 * client needs to select a protocol from the server's provided list. |out|
2808 * must be set to point to the selected protocol (which may be within |in|).
2809 * The length of the protocol name must be written into |outlen|. The
2810 * server's advertised protocols are provided in |in| and |inlen|. The
2811 * callback can assume that |in| is syntactically valid. The client must
2812 * select a protocol. It is fatal to the connection if this callback returns
2813 * a value other than SSL_TLSEXT_ERR_OK.
2814 */
2815void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2816 SSL_CTX_npn_select_cb_func cb,
2817 void *arg)
2818{
2819 ctx->ext.npn_select_cb = cb;
2820 ctx->ext.npn_select_cb_arg = arg;
2821}
2822#endif
2823
2824/*
2825 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2826 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2827 * length-prefixed strings). Returns 0 on success.
2828 */
2829int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2830 unsigned int protos_len)
2831{
2832 OPENSSL_free(ctx->ext.alpn);
2833 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2834 if (ctx->ext.alpn == NULL) {
2835 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2836 return 1;
2837 }
2838 ctx->ext.alpn_len = protos_len;
2839
2840 return 0;
2841}
2842
2843/*
2844 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2845 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2846 * length-prefixed strings). Returns 0 on success.
2847 */
2848int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2849 unsigned int protos_len)
2850{
2851 OPENSSL_free(ssl->ext.alpn);
2852 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2853 if (ssl->ext.alpn == NULL) {
2854 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2855 return 1;
2856 }
2857 ssl->ext.alpn_len = protos_len;
2858
2859 return 0;
2860}
2861
2862/*
2863 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2864 * called during ClientHello processing in order to select an ALPN protocol
2865 * from the client's list of offered protocols.
2866 */
2867void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2868 SSL_CTX_alpn_select_cb_func cb,
2869 void *arg)
2870{
2871 ctx->ext.alpn_select_cb = cb;
2872 ctx->ext.alpn_select_cb_arg = arg;
2873}
2874
2875/*
2876 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2877 * On return it sets |*data| to point to |*len| bytes of protocol name
2878 * (not including the leading length-prefix byte). If the server didn't
2879 * respond with a negotiated protocol then |*len| will be zero.
2880 */
2881void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2882 unsigned int *len)
2883{
2884 *data = NULL;
2885 if (ssl->s3)
2886 *data = ssl->s3->alpn_selected;
2887 if (*data == NULL)
2888 *len = 0;
2889 else
2890 *len = (unsigned int)ssl->s3->alpn_selected_len;
2891}
2892
2893int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2894 const char *label, size_t llen,
2895 const unsigned char *context, size_t contextlen,
2896 int use_context)
2897{
2898 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2899 return -1;
2900
2901 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2902 llen, context,
2903 contextlen, use_context);
2904}
2905
2906int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2907 const char *label, size_t llen,
2908 const unsigned char *context,
2909 size_t contextlen)
2910{
2911 if (s->version != TLS1_3_VERSION)
2912 return 0;
2913
2914 return tls13_export_keying_material_early(s, out, olen, label, llen,
2915 context, contextlen);
2916}
2917
2918static unsigned long ssl_session_hash(const SSL_SESSION *a)
2919{
2920 const unsigned char *session_id = a->session_id;
2921 unsigned long l;
2922 unsigned char tmp_storage[4];
2923
2924 if (a->session_id_length < sizeof(tmp_storage)) {
2925 memset(tmp_storage, 0, sizeof(tmp_storage));
2926 memcpy(tmp_storage, a->session_id, a->session_id_length);
2927 session_id = tmp_storage;
2928 }
2929
2930 l = (unsigned long)
2931 ((unsigned long)session_id[0]) |
2932 ((unsigned long)session_id[1] << 8L) |
2933 ((unsigned long)session_id[2] << 16L) |
2934 ((unsigned long)session_id[3] << 24L);
2935 return l;
2936}
2937
2938/*
2939 * NB: If this function (or indeed the hash function which uses a sort of
2940 * coarser function than this one) is changed, ensure
2941 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2942 * being able to construct an SSL_SESSION that will collide with any existing
2943 * session with a matching session ID.
2944 */
2945static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2946{
2947 if (a->ssl_version != b->ssl_version)
2948 return 1;
2949 if (a->session_id_length != b->session_id_length)
2950 return 1;
2951 return memcmp(a->session_id, b->session_id, a->session_id_length);
2952}
2953
2954/*
2955 * These wrapper functions should remain rather than redeclaring
2956 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2957 * variable. The reason is that the functions aren't static, they're exposed
2958 * via ssl.h.
2959 */
2960
2961SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2962{
2963 SSL_CTX *ret = NULL;
2964
2965 if (meth == NULL) {
2966 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2967 return NULL;
2968 }
2969
2970 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2971 return NULL;
2972
2973 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2974 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2975 goto err;
2976 }
2977 ret = OPENSSL_zalloc(sizeof(*ret));
2978 if (ret == NULL)
2979 goto err;
2980
2981 ret->method = meth;
2982 ret->min_proto_version = 0;
2983 ret->max_proto_version = 0;
2984 ret->mode = SSL_MODE_AUTO_RETRY;
2985 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2986 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2987 /* We take the system default. */
2988 ret->session_timeout = meth->get_timeout();
2989 ret->references = 1;
2990 ret->lock = CRYPTO_THREAD_lock_new();
2991 if (ret->lock == NULL) {
2992 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2993 OPENSSL_free(ret);
2994 return NULL;
2995 }
2996 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
2997 ret->verify_mode = SSL_VERIFY_NONE;
2998 if ((ret->cert = ssl_cert_new()) == NULL)
2999 goto err;
3000
3001 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3002 if (ret->sessions == NULL)
3003 goto err;
3004 ret->cert_store = X509_STORE_new();
3005 if (ret->cert_store == NULL)
3006 goto err;
3007#ifndef OPENSSL_NO_CT
3008 ret->ctlog_store = CTLOG_STORE_new();
3009 if (ret->ctlog_store == NULL)
3010 goto err;
3011#endif
3012
3013 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
3014 goto err;
3015
3016 if (!ssl_create_cipher_list(ret->method,
3017 ret->tls13_ciphersuites,
3018 &ret->cipher_list, &ret->cipher_list_by_id,
3019 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3020 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3021 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3022 goto err2;
3023 }
3024
3025 ret->param = X509_VERIFY_PARAM_new();
3026 if (ret->param == NULL)
3027 goto err;
3028
3029 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3030 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3031 goto err2;
3032 }
3033 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3034 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3035 goto err2;
3036 }
3037
3038 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3039 goto err;
3040
3041 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3042 goto err;
3043
3044 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3045 goto err;
3046
3047 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3048 goto err;
3049
3050 /* No compression for DTLS */
3051 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3052 ret->comp_methods = SSL_COMP_get_compression_methods();
3053
3054 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3055 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3056
3057 /* Setup RFC5077 ticket keys */
3058 if ((RAND_bytes(ret->ext.tick_key_name,
3059 sizeof(ret->ext.tick_key_name)) <= 0)
3060 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
3061 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3062 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
3063 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3064 ret->options |= SSL_OP_NO_TICKET;
3065
3066 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
3067 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3068 goto err;
3069
3070#ifndef OPENSSL_NO_SRP
3071 if (!SSL_CTX_SRP_CTX_init(ret))
3072 goto err;
3073#endif
3074#ifndef OPENSSL_NO_ENGINE
3075# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3076# define eng_strx(x) #x
3077# define eng_str(x) eng_strx(x)
3078 /* Use specific client engine automatically... ignore errors */
3079 {
3080 ENGINE *eng;
3081 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3082 if (!eng) {
3083 ERR_clear_error();
3084 ENGINE_load_builtin_engines();
3085 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3086 }
3087 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3088 ERR_clear_error();
3089 }
3090# endif
3091#endif
3092 /*
3093 * Default is to connect to non-RI servers. When RI is more widely
3094 * deployed might change this.
3095 */
3096 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3097 /*
3098 * Disable compression by default to prevent CRIME. Applications can
3099 * re-enable compression by configuring
3100 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3101 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3102 * middlebox compatibility by default. This may be disabled by default in
3103 * a later OpenSSL version.
3104 */
3105 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3106
3107 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3108
3109 /*
3110 * We cannot usefully set a default max_early_data here (which gets
3111 * propagated in SSL_new(), for the following reason: setting the
3112 * SSL field causes tls_construct_stoc_early_data() to tell the
3113 * client that early data will be accepted when constructing a TLS 1.3
3114 * session ticket, and the client will accordingly send us early data
3115 * when using that ticket (if the client has early data to send).
3116 * However, in order for the early data to actually be consumed by
3117 * the application, the application must also have calls to
3118 * SSL_read_early_data(); otherwise we'll just skip past the early data
3119 * and ignore it. So, since the application must add calls to
3120 * SSL_read_early_data(), we also require them to add
3121 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3122 * eliminating the bandwidth-wasting early data in the case described
3123 * above.
3124 */
3125 ret->max_early_data = 0;
3126
3127 /*
3128 * Default recv_max_early_data is a fully loaded single record. Could be
3129 * split across multiple records in practice. We set this differently to
3130 * max_early_data so that, in the default case, we do not advertise any
3131 * support for early_data, but if a client were to send us some (e.g.
3132 * because of an old, stale ticket) then we will tolerate it and skip over
3133 * it.
3134 */
3135 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3136
3137 /* By default we send two session tickets automatically in TLSv1.3 */
3138 ret->num_tickets = 2;
3139
3140 ssl_ctx_system_config(ret);
3141
3142 return ret;
3143 err:
3144 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3145 err2:
3146 SSL_CTX_free(ret);
3147 return NULL;
3148}
3149
3150int SSL_CTX_up_ref(SSL_CTX *ctx)
3151{
3152 int i;
3153
3154 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3155 return 0;
3156
3157 REF_PRINT_COUNT("SSL_CTX", ctx);
3158 REF_ASSERT_ISNT(i < 2);
3159 return ((i > 1) ? 1 : 0);
3160}
3161
3162void SSL_CTX_free(SSL_CTX *a)
3163{
3164 int i;
3165
3166 if (a == NULL)
3167 return;
3168
3169 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3170 REF_PRINT_COUNT("SSL_CTX", a);
3171 if (i > 0)
3172 return;
3173 REF_ASSERT_ISNT(i < 0);
3174
3175 X509_VERIFY_PARAM_free(a->param);
3176 dane_ctx_final(&a->dane);
3177
3178 /*
3179 * Free internal session cache. However: the remove_cb() may reference
3180 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3181 * after the sessions were flushed.
3182 * As the ex_data handling routines might also touch the session cache,
3183 * the most secure solution seems to be: empty (flush) the cache, then
3184 * free ex_data, then finally free the cache.
3185 * (See ticket [openssl.org #212].)
3186 */
3187 if (a->sessions != NULL)
3188 SSL_CTX_flush_sessions(a, 0);
3189
3190 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3191 lh_SSL_SESSION_free(a->sessions);
3192 X509_STORE_free(a->cert_store);
3193#ifndef OPENSSL_NO_CT
3194 CTLOG_STORE_free(a->ctlog_store);
3195#endif
3196 sk_SSL_CIPHER_free(a->cipher_list);
3197 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3198 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3199 ssl_cert_free(a->cert);
3200 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3201 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3202 sk_X509_pop_free(a->extra_certs, X509_free);
3203 a->comp_methods = NULL;
3204#ifndef OPENSSL_NO_SRTP
3205 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3206#endif
3207#ifndef OPENSSL_NO_SRP
3208 SSL_CTX_SRP_CTX_free(a);
3209#endif
3210#ifndef OPENSSL_NO_ENGINE
3211 ENGINE_finish(a->client_cert_engine);
3212#endif
3213
3214#ifndef OPENSSL_NO_EC
3215 OPENSSL_free(a->ext.ecpointformats);
3216 OPENSSL_free(a->ext.supportedgroups);
3217#endif
3218 OPENSSL_free(a->ext.alpn);
3219 OPENSSL_secure_free(a->ext.secure);
3220
3221 CRYPTO_THREAD_lock_free(a->lock);
3222
3223 OPENSSL_free(a);
3224}
3225
3226void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3227{
3228 ctx->default_passwd_callback = cb;
3229}
3230
3231void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3232{
3233 ctx->default_passwd_callback_userdata = u;
3234}
3235
3236pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3237{
3238 return ctx->default_passwd_callback;
3239}
3240
3241void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3242{
3243 return ctx->default_passwd_callback_userdata;
3244}
3245
3246void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3247{
3248 s->default_passwd_callback = cb;
3249}
3250
3251void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3252{
3253 s->default_passwd_callback_userdata = u;
3254}
3255
3256pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3257{
3258 return s->default_passwd_callback;
3259}
3260
3261void *SSL_get_default_passwd_cb_userdata(SSL *s)
3262{
3263 return s->default_passwd_callback_userdata;
3264}
3265
3266void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3267 int (*cb) (X509_STORE_CTX *, void *),
3268 void *arg)
3269{
3270 ctx->app_verify_callback = cb;
3271 ctx->app_verify_arg = arg;
3272}
3273
3274void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3275 int (*cb) (int, X509_STORE_CTX *))
3276{
3277 ctx->verify_mode = mode;
3278 ctx->default_verify_callback = cb;
3279}
3280
3281void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3282{
3283 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3284}
3285
3286void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3287{
3288 ssl_cert_set_cert_cb(c->cert, cb, arg);
3289}
3290
3291void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3292{
3293 ssl_cert_set_cert_cb(s->cert, cb, arg);
3294}
3295
3296void ssl_set_masks(SSL *s)
3297{
3298 CERT *c = s->cert;
3299 uint32_t *pvalid = s->s3->tmp.valid_flags;
3300 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3301 unsigned long mask_k, mask_a;
3302#ifndef OPENSSL_NO_EC
3303 int have_ecc_cert, ecdsa_ok;
3304#endif
3305 if (c == NULL)
3306 return;
3307
3308#ifndef OPENSSL_NO_DH
3309 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3310#else
3311 dh_tmp = 0;
3312#endif
3313
3314 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3315 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3316 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3317#ifndef OPENSSL_NO_EC
3318 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3319#endif
3320 mask_k = 0;
3321 mask_a = 0;
3322
3323#ifdef CIPHER_DEBUG
3324 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3325 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3326#endif
3327
3328#ifndef OPENSSL_NO_GOST
3329 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3330 mask_k |= SSL_kGOST;
3331 mask_a |= SSL_aGOST12;
3332 }
3333 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3334 mask_k |= SSL_kGOST;
3335 mask_a |= SSL_aGOST12;
3336 }
3337 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3338 mask_k |= SSL_kGOST;
3339 mask_a |= SSL_aGOST01;
3340 }
3341#endif
3342
3343 if (rsa_enc)
3344 mask_k |= SSL_kRSA;
3345
3346 if (dh_tmp)
3347 mask_k |= SSL_kDHE;
3348
3349 /*
3350 * If we only have an RSA-PSS certificate allow RSA authentication
3351 * if TLS 1.2 and peer supports it.
3352 */
3353
3354 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3355 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3356 && TLS1_get_version(s) == TLS1_2_VERSION))
3357 mask_a |= SSL_aRSA;
3358
3359 if (dsa_sign) {
3360 mask_a |= SSL_aDSS;
3361 }
3362
3363 mask_a |= SSL_aNULL;
3364
3365 /*
3366 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3367 * depending on the key usage extension.
3368 */
3369#ifndef OPENSSL_NO_EC
3370 if (have_ecc_cert) {
3371 uint32_t ex_kusage;
3372 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3373 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3374 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3375 ecdsa_ok = 0;
3376 if (ecdsa_ok)
3377 mask_a |= SSL_aECDSA;
3378 }
3379 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3380 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3381 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3382 && TLS1_get_version(s) == TLS1_2_VERSION)
3383 mask_a |= SSL_aECDSA;
3384
3385 /* Allow Ed448 for TLS 1.2 if peer supports it */
3386 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3387 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3388 && TLS1_get_version(s) == TLS1_2_VERSION)
3389 mask_a |= SSL_aECDSA;
3390#endif
3391
3392#ifndef OPENSSL_NO_EC
3393 mask_k |= SSL_kECDHE;
3394#endif
3395
3396#ifndef OPENSSL_NO_PSK
3397 mask_k |= SSL_kPSK;
3398 mask_a |= SSL_aPSK;
3399 if (mask_k & SSL_kRSA)
3400 mask_k |= SSL_kRSAPSK;
3401 if (mask_k & SSL_kDHE)
3402 mask_k |= SSL_kDHEPSK;
3403 if (mask_k & SSL_kECDHE)
3404 mask_k |= SSL_kECDHEPSK;
3405#endif
3406
3407 s->s3->tmp.mask_k = mask_k;
3408 s->s3->tmp.mask_a = mask_a;
3409}
3410
3411#ifndef OPENSSL_NO_EC
3412
3413int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3414{
3415 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3416 /* key usage, if present, must allow signing */
3417 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3418 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3419 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3420 return 0;
3421 }
3422 }
3423 return 1; /* all checks are ok */
3424}
3425
3426#endif
3427
3428int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3429 size_t *serverinfo_length)
3430{
3431 CERT_PKEY *cpk = s->s3->tmp.cert;
3432 *serverinfo_length = 0;
3433
3434 if (cpk == NULL || cpk->serverinfo == NULL)
3435 return 0;
3436
3437 *serverinfo = cpk->serverinfo;
3438 *serverinfo_length = cpk->serverinfo_length;
3439 return 1;
3440}
3441
3442void ssl_update_cache(SSL *s, int mode)
3443{
3444 int i;
3445
3446 /*
3447 * If the session_id_length is 0, we are not supposed to cache it, and it
3448 * would be rather hard to do anyway :-)
3449 */
3450 if (s->session->session_id_length == 0)
3451 return;
3452
3453 /*
3454 * If sid_ctx_length is 0 there is no specific application context
3455 * associated with this session, so when we try to resume it and
3456 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3457 * indication that this is actually a session for the proper application
3458 * context, and the *handshake* will fail, not just the resumption attempt.
3459 * Do not cache (on the server) these sessions that are not resumable
3460 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3461 */
3462 if (s->server && s->session->sid_ctx_length == 0
3463 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3464 return;
3465
3466 i = s->session_ctx->session_cache_mode;
3467 if ((i & mode) != 0
3468 && (!s->hit || SSL_IS_TLS13(s))) {
3469 /*
3470 * Add the session to the internal cache. In server side TLSv1.3 we
3471 * normally don't do this because by default it's a full stateless ticket
3472 * with only a dummy session id so there is no reason to cache it,
3473 * unless:
3474 * - we are doing early_data, in which case we cache so that we can
3475 * detect replays
3476 * - the application has set a remove_session_cb so needs to know about
3477 * session timeout events
3478 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3479 */
3480 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3481 && (!SSL_IS_TLS13(s)
3482 || !s->server
3483 || (s->max_early_data > 0
3484 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3485 || s->session_ctx->remove_session_cb != NULL
3486 || (s->options & SSL_OP_NO_TICKET) != 0))
3487 SSL_CTX_add_session(s->session_ctx, s->session);
3488
3489 /*
3490 * Add the session to the external cache. We do this even in server side
3491 * TLSv1.3 without early data because some applications just want to
3492 * know about the creation of a session and aren't doing a full cache.
3493 */
3494 if (s->session_ctx->new_session_cb != NULL) {
3495 SSL_SESSION_up_ref(s->session);
3496 if (!s->session_ctx->new_session_cb(s, s->session))
3497 SSL_SESSION_free(s->session);
3498 }
3499 }
3500
3501 /* auto flush every 255 connections */
3502 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3503 TSAN_QUALIFIER int *stat;
3504 if (mode & SSL_SESS_CACHE_CLIENT)
3505 stat = &s->session_ctx->stats.sess_connect_good;
3506 else
3507 stat = &s->session_ctx->stats.sess_accept_good;
3508 if ((tsan_load(stat) & 0xff) == 0xff)
3509 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3510 }
3511}
3512
3513const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3514{
3515 return ctx->method;
3516}
3517
3518const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3519{
3520 return s->method;
3521}
3522
3523int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3524{
3525 int ret = 1;
3526
3527 if (s->method != meth) {
3528 const SSL_METHOD *sm = s->method;
3529 int (*hf) (SSL *) = s->handshake_func;
3530
3531 if (sm->version == meth->version)
3532 s->method = meth;
3533 else {
3534 sm->ssl_free(s);
3535 s->method = meth;
3536 ret = s->method->ssl_new(s);
3537 }
3538
3539 if (hf == sm->ssl_connect)
3540 s->handshake_func = meth->ssl_connect;
3541 else if (hf == sm->ssl_accept)
3542 s->handshake_func = meth->ssl_accept;
3543 }
3544 return ret;
3545}
3546
3547int SSL_get_error(const SSL *s, int i)
3548{
3549 int reason;
3550 unsigned long l;
3551 BIO *bio;
3552
3553 if (i > 0)
3554 return SSL_ERROR_NONE;
3555
3556 /*
3557 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3558 * where we do encode the error
3559 */
3560 if ((l = ERR_peek_error()) != 0) {
3561 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3562 return SSL_ERROR_SYSCALL;
3563 else
3564 return SSL_ERROR_SSL;
3565 }
3566
3567 if (SSL_want_read(s)) {
3568 bio = SSL_get_rbio(s);
3569 if (BIO_should_read(bio))
3570 return SSL_ERROR_WANT_READ;
3571 else if (BIO_should_write(bio))
3572 /*
3573 * This one doesn't make too much sense ... We never try to write
3574 * to the rbio, and an application program where rbio and wbio
3575 * are separate couldn't even know what it should wait for.
3576 * However if we ever set s->rwstate incorrectly (so that we have
3577 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3578 * wbio *are* the same, this test works around that bug; so it
3579 * might be safer to keep it.
3580 */
3581 return SSL_ERROR_WANT_WRITE;
3582 else if (BIO_should_io_special(bio)) {
3583 reason = BIO_get_retry_reason(bio);
3584 if (reason == BIO_RR_CONNECT)
3585 return SSL_ERROR_WANT_CONNECT;
3586 else if (reason == BIO_RR_ACCEPT)
3587 return SSL_ERROR_WANT_ACCEPT;
3588 else
3589 return SSL_ERROR_SYSCALL; /* unknown */
3590 }
3591 }
3592
3593 if (SSL_want_write(s)) {
3594 /* Access wbio directly - in order to use the buffered bio if present */
3595 bio = s->wbio;
3596 if (BIO_should_write(bio))
3597 return SSL_ERROR_WANT_WRITE;
3598 else if (BIO_should_read(bio))
3599 /*
3600 * See above (SSL_want_read(s) with BIO_should_write(bio))
3601 */
3602 return SSL_ERROR_WANT_READ;
3603 else if (BIO_should_io_special(bio)) {
3604 reason = BIO_get_retry_reason(bio);
3605 if (reason == BIO_RR_CONNECT)
3606 return SSL_ERROR_WANT_CONNECT;
3607 else if (reason == BIO_RR_ACCEPT)
3608 return SSL_ERROR_WANT_ACCEPT;
3609 else
3610 return SSL_ERROR_SYSCALL;
3611 }
3612 }
3613 if (SSL_want_x509_lookup(s))
3614 return SSL_ERROR_WANT_X509_LOOKUP;
3615 if (SSL_want_async(s))
3616 return SSL_ERROR_WANT_ASYNC;
3617 if (SSL_want_async_job(s))
3618 return SSL_ERROR_WANT_ASYNC_JOB;
3619 if (SSL_want_client_hello_cb(s))
3620 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3621
3622 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3623 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3624 return SSL_ERROR_ZERO_RETURN;
3625
3626 return SSL_ERROR_SYSCALL;
3627}
3628
3629static int ssl_do_handshake_intern(void *vargs)
3630{
3631 struct ssl_async_args *args;
3632 SSL *s;
3633
3634 args = (struct ssl_async_args *)vargs;
3635 s = args->s;
3636
3637 return s->handshake_func(s);
3638}
3639
3640int SSL_do_handshake(SSL *s)
3641{
3642 int ret = 1;
3643
3644 if (s->handshake_func == NULL) {
3645 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3646 return -1;
3647 }
3648
3649 ossl_statem_check_finish_init(s, -1);
3650
3651 s->method->ssl_renegotiate_check(s, 0);
3652
3653 if (SSL_in_init(s) || SSL_in_before(s)) {
3654 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3655 struct ssl_async_args args;
3656
3657 args.s = s;
3658
3659 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3660 } else {
3661 ret = s->handshake_func(s);
3662 }
3663 }
3664 return ret;
3665}
3666
3667void SSL_set_accept_state(SSL *s)
3668{
3669 s->server = 1;
3670 s->shutdown = 0;
3671 ossl_statem_clear(s);
3672 s->handshake_func = s->method->ssl_accept;
3673 clear_ciphers(s);
3674}
3675
3676void SSL_set_connect_state(SSL *s)
3677{
3678 s->server = 0;
3679 s->shutdown = 0;
3680 ossl_statem_clear(s);
3681 s->handshake_func = s->method->ssl_connect;
3682 clear_ciphers(s);
3683}
3684
3685int ssl_undefined_function(SSL *s)
3686{
3687 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3688 return 0;
3689}
3690
3691int ssl_undefined_void_function(void)
3692{
3693 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3694 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3695 return 0;
3696}
3697
3698int ssl_undefined_const_function(const SSL *s)
3699{
3700 return 0;
3701}
3702
3703const SSL_METHOD *ssl_bad_method(int ver)
3704{
3705 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3706 return NULL;
3707}
3708
3709const char *ssl_protocol_to_string(int version)
3710{
3711 switch(version)
3712 {
3713 case TLS1_3_VERSION:
3714 return "TLSv1.3";
3715
3716 case TLS1_2_VERSION:
3717 return "TLSv1.2";
3718
3719 case TLS1_1_VERSION:
3720 return "TLSv1.1";
3721
3722 case TLS1_VERSION:
3723 return "TLSv1";
3724
3725 case SSL3_VERSION:
3726 return "SSLv3";
3727
3728 case DTLS1_BAD_VER:
3729 return "DTLSv0.9";
3730
3731 case DTLS1_VERSION:
3732 return "DTLSv1";
3733
3734 case DTLS1_2_VERSION:
3735 return "DTLSv1.2";
3736
3737 default:
3738 return "unknown";
3739 }
3740}
3741
3742const char *SSL_get_version(const SSL *s)
3743{
3744 return ssl_protocol_to_string(s->version);
3745}
3746
3747static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3748{
3749 STACK_OF(X509_NAME) *sk;
3750 X509_NAME *xn;
3751 int i;
3752
3753 if (src == NULL) {
3754 *dst = NULL;
3755 return 1;
3756 }
3757
3758 if ((sk = sk_X509_NAME_new_null()) == NULL)
3759 return 0;
3760 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3761 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3762 if (xn == NULL) {
3763 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3764 return 0;
3765 }
3766 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3767 X509_NAME_free(xn);
3768 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3769 return 0;
3770 }
3771 }
3772 *dst = sk;
3773
3774 return 1;
3775}
3776
3777SSL *SSL_dup(SSL *s)
3778{
3779 SSL *ret;
3780 int i;
3781
3782 /* If we're not quiescent, just up_ref! */
3783 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3784 CRYPTO_UP_REF(&s->references, &i, s->lock);
3785 return s;
3786 }
3787
3788 /*
3789 * Otherwise, copy configuration state, and session if set.
3790 */
3791 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3792 return NULL;
3793
3794 if (s->session != NULL) {
3795 /*
3796 * Arranges to share the same session via up_ref. This "copies"
3797 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3798 */
3799 if (!SSL_copy_session_id(ret, s))
3800 goto err;
3801 } else {
3802 /*
3803 * No session has been established yet, so we have to expect that
3804 * s->cert or ret->cert will be changed later -- they should not both
3805 * point to the same object, and thus we can't use
3806 * SSL_copy_session_id.
3807 */
3808 if (!SSL_set_ssl_method(ret, s->method))
3809 goto err;
3810
3811 if (s->cert != NULL) {
3812 ssl_cert_free(ret->cert);
3813 ret->cert = ssl_cert_dup(s->cert);
3814 if (ret->cert == NULL)
3815 goto err;
3816 }
3817
3818 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3819 (int)s->sid_ctx_length))
3820 goto err;
3821 }
3822
3823 if (!ssl_dane_dup(ret, s))
3824 goto err;
3825 ret->version = s->version;
3826 ret->options = s->options;
3827 ret->mode = s->mode;
3828 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3829 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3830 ret->msg_callback = s->msg_callback;
3831 ret->msg_callback_arg = s->msg_callback_arg;
3832 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3833 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3834 ret->generate_session_id = s->generate_session_id;
3835
3836 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3837
3838 /* copy app data, a little dangerous perhaps */
3839 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3840 goto err;
3841
3842 /* setup rbio, and wbio */
3843 if (s->rbio != NULL) {
3844 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3845 goto err;
3846 }
3847 if (s->wbio != NULL) {
3848 if (s->wbio != s->rbio) {
3849 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3850 goto err;
3851 } else {
3852 BIO_up_ref(ret->rbio);
3853 ret->wbio = ret->rbio;
3854 }
3855 }
3856
3857 ret->server = s->server;
3858 if (s->handshake_func) {
3859 if (s->server)
3860 SSL_set_accept_state(ret);
3861 else
3862 SSL_set_connect_state(ret);
3863 }
3864 ret->shutdown = s->shutdown;
3865 ret->hit = s->hit;
3866
3867 ret->default_passwd_callback = s->default_passwd_callback;
3868 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3869
3870 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3871
3872 /* dup the cipher_list and cipher_list_by_id stacks */
3873 if (s->cipher_list != NULL) {
3874 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3875 goto err;
3876 }
3877 if (s->cipher_list_by_id != NULL)
3878 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3879 == NULL)
3880 goto err;
3881
3882 /* Dup the client_CA list */
3883 if (!dup_ca_names(&ret->ca_names, s->ca_names)
3884 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
3885 goto err;
3886
3887 return ret;
3888
3889 err:
3890 SSL_free(ret);
3891 return NULL;
3892}
3893
3894void ssl_clear_cipher_ctx(SSL *s)
3895{
3896 if (s->enc_read_ctx != NULL) {
3897 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3898 s->enc_read_ctx = NULL;
3899 }
3900 if (s->enc_write_ctx != NULL) {
3901 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3902 s->enc_write_ctx = NULL;
3903 }
3904#ifndef OPENSSL_NO_COMP
3905 COMP_CTX_free(s->expand);
3906 s->expand = NULL;
3907 COMP_CTX_free(s->compress);
3908 s->compress = NULL;
3909#endif
3910}
3911
3912X509 *SSL_get_certificate(const SSL *s)
3913{
3914 if (s->cert != NULL)
3915 return s->cert->key->x509;
3916 else
3917 return NULL;
3918}
3919
3920EVP_PKEY *SSL_get_privatekey(const SSL *s)
3921{
3922 if (s->cert != NULL)
3923 return s->cert->key->privatekey;
3924 else
3925 return NULL;
3926}
3927
3928X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3929{
3930 if (ctx->cert != NULL)
3931 return ctx->cert->key->x509;
3932 else
3933 return NULL;
3934}
3935
3936EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3937{
3938 if (ctx->cert != NULL)
3939 return ctx->cert->key->privatekey;
3940 else
3941 return NULL;
3942}
3943
3944const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3945{
3946 if ((s->session != NULL) && (s->session->cipher != NULL))
3947 return s->session->cipher;
3948 return NULL;
3949}
3950
3951const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3952{
3953 return s->s3->tmp.new_cipher;
3954}
3955
3956const COMP_METHOD *SSL_get_current_compression(const SSL *s)
3957{
3958#ifndef OPENSSL_NO_COMP
3959 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3960#else
3961 return NULL;
3962#endif
3963}
3964
3965const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
3966{
3967#ifndef OPENSSL_NO_COMP
3968 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3969#else
3970 return NULL;
3971#endif
3972}
3973
3974int ssl_init_wbio_buffer(SSL *s)
3975{
3976 BIO *bbio;
3977
3978 if (s->bbio != NULL) {
3979 /* Already buffered. */
3980 return 1;
3981 }
3982
3983 bbio = BIO_new(BIO_f_buffer());
3984 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3985 BIO_free(bbio);
3986 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3987 return 0;
3988 }
3989 s->bbio = bbio;
3990 s->wbio = BIO_push(bbio, s->wbio);
3991
3992 return 1;
3993}
3994
3995int ssl_free_wbio_buffer(SSL *s)
3996{
3997 /* callers ensure s is never null */
3998 if (s->bbio == NULL)
3999 return 1;
4000
4001 s->wbio = BIO_pop(s->wbio);
4002 BIO_free(s->bbio);
4003 s->bbio = NULL;
4004
4005 return 1;
4006}
4007
4008void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4009{
4010 ctx->quiet_shutdown = mode;
4011}
4012
4013int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4014{
4015 return ctx->quiet_shutdown;
4016}
4017
4018void SSL_set_quiet_shutdown(SSL *s, int mode)
4019{
4020 s->quiet_shutdown = mode;
4021}
4022
4023int SSL_get_quiet_shutdown(const SSL *s)
4024{
4025 return s->quiet_shutdown;
4026}
4027
4028void SSL_set_shutdown(SSL *s, int mode)
4029{
4030 s->shutdown = mode;
4031}
4032
4033int SSL_get_shutdown(const SSL *s)
4034{
4035 return s->shutdown;
4036}
4037
4038int SSL_version(const SSL *s)
4039{
4040 return s->version;
4041}
4042
4043int SSL_client_version(const SSL *s)
4044{
4045 return s->client_version;
4046}
4047
4048SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4049{
4050 return ssl->ctx;
4051}
4052
4053SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4054{
4055 CERT *new_cert;
4056 if (ssl->ctx == ctx)
4057 return ssl->ctx;
4058 if (ctx == NULL)
4059 ctx = ssl->session_ctx;
4060 new_cert = ssl_cert_dup(ctx->cert);
4061 if (new_cert == NULL) {
4062 return NULL;
4063 }
4064
4065 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4066 ssl_cert_free(new_cert);
4067 return NULL;
4068 }
4069
4070 ssl_cert_free(ssl->cert);
4071 ssl->cert = new_cert;
4072
4073 /*
4074 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4075 * so setter APIs must prevent invalid lengths from entering the system.
4076 */
4077 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4078 return NULL;
4079
4080 /*
4081 * If the session ID context matches that of the parent SSL_CTX,
4082 * inherit it from the new SSL_CTX as well. If however the context does
4083 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4084 * leave it unchanged.
4085 */
4086 if ((ssl->ctx != NULL) &&
4087 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4088 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4089 ssl->sid_ctx_length = ctx->sid_ctx_length;
4090 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4091 }
4092
4093 SSL_CTX_up_ref(ctx);
4094 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4095 ssl->ctx = ctx;
4096
4097 return ssl->ctx;
4098}
4099
4100int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4101{
4102 return X509_STORE_set_default_paths(ctx->cert_store);
4103}
4104
4105int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4106{
4107 X509_LOOKUP *lookup;
4108
4109 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4110 if (lookup == NULL)
4111 return 0;
4112 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4113
4114 /* Clear any errors if the default directory does not exist */
4115 ERR_clear_error();
4116
4117 return 1;
4118}
4119
4120int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4121{
4122 X509_LOOKUP *lookup;
4123
4124 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4125 if (lookup == NULL)
4126 return 0;
4127
4128 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4129
4130 /* Clear any errors if the default file does not exist */
4131 ERR_clear_error();
4132
4133 return 1;
4134}
4135
4136int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4137 const char *CApath)
4138{
4139 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
4140}
4141
4142void SSL_set_info_callback(SSL *ssl,
4143 void (*cb) (const SSL *ssl, int type, int val))
4144{
4145 ssl->info_callback = cb;
4146}
4147
4148/*
4149 * One compiler (Diab DCC) doesn't like argument names in returned function
4150 * pointer.
4151 */
4152void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4153 int /* type */ ,
4154 int /* val */ ) {
4155 return ssl->info_callback;
4156}
4157
4158void SSL_set_verify_result(SSL *ssl, long arg)
4159{
4160 ssl->verify_result = arg;
4161}
4162
4163long SSL_get_verify_result(const SSL *ssl)
4164{
4165 return ssl->verify_result;
4166}
4167
4168size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4169{
4170 if (outlen == 0)
4171 return sizeof(ssl->s3->client_random);
4172 if (outlen > sizeof(ssl->s3->client_random))
4173 outlen = sizeof(ssl->s3->client_random);
4174 memcpy(out, ssl->s3->client_random, outlen);
4175 return outlen;
4176}
4177
4178size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4179{
4180 if (outlen == 0)
4181 return sizeof(ssl->s3->server_random);
4182 if (outlen > sizeof(ssl->s3->server_random))
4183 outlen = sizeof(ssl->s3->server_random);
4184 memcpy(out, ssl->s3->server_random, outlen);
4185 return outlen;
4186}
4187
4188size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4189 unsigned char *out, size_t outlen)
4190{
4191 if (outlen == 0)
4192 return session->master_key_length;
4193 if (outlen > session->master_key_length)
4194 outlen = session->master_key_length;
4195 memcpy(out, session->master_key, outlen);
4196 return outlen;
4197}
4198
4199int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4200 size_t len)
4201{
4202 if (len > sizeof(sess->master_key))
4203 return 0;
4204
4205 memcpy(sess->master_key, in, len);
4206 sess->master_key_length = len;
4207 return 1;
4208}
4209
4210
4211int SSL_set_ex_data(SSL *s, int idx, void *arg)
4212{
4213 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4214}
4215
4216void *SSL_get_ex_data(const SSL *s, int idx)
4217{
4218 return CRYPTO_get_ex_data(&s->ex_data, idx);
4219}
4220
4221int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4222{
4223 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4224}
4225
4226void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4227{
4228 return CRYPTO_get_ex_data(&s->ex_data, idx);
4229}
4230
4231X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4232{
4233 return ctx->cert_store;
4234}
4235
4236void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4237{
4238 X509_STORE_free(ctx->cert_store);
4239 ctx->cert_store = store;
4240}
4241
4242void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4243{
4244 if (store != NULL)
4245 X509_STORE_up_ref(store);
4246 SSL_CTX_set_cert_store(ctx, store);
4247}
4248
4249int SSL_want(const SSL *s)
4250{
4251 return s->rwstate;
4252}
4253
4254/**
4255 * \brief Set the callback for generating temporary DH keys.
4256 * \param ctx the SSL context.
4257 * \param dh the callback
4258 */
4259
4260#ifndef OPENSSL_NO_DH
4261void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4262 DH *(*dh) (SSL *ssl, int is_export,
4263 int keylength))
4264{
4265 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4266}
4267
4268void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4269 int keylength))
4270{
4271 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4272}
4273#endif
4274
4275#ifndef OPENSSL_NO_PSK
4276int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4277{
4278 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4279 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4280 return 0;
4281 }
4282 OPENSSL_free(ctx->cert->psk_identity_hint);
4283 if (identity_hint != NULL) {
4284 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4285 if (ctx->cert->psk_identity_hint == NULL)
4286 return 0;
4287 } else
4288 ctx->cert->psk_identity_hint = NULL;
4289 return 1;
4290}
4291
4292int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4293{
4294 if (s == NULL)
4295 return 0;
4296
4297 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4298 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4299 return 0;
4300 }
4301 OPENSSL_free(s->cert->psk_identity_hint);
4302 if (identity_hint != NULL) {
4303 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4304 if (s->cert->psk_identity_hint == NULL)
4305 return 0;
4306 } else
4307 s->cert->psk_identity_hint = NULL;
4308 return 1;
4309}
4310
4311const char *SSL_get_psk_identity_hint(const SSL *s)
4312{
4313 if (s == NULL || s->session == NULL)
4314 return NULL;
4315 return s->session->psk_identity_hint;
4316}
4317
4318const char *SSL_get_psk_identity(const SSL *s)
4319{
4320 if (s == NULL || s->session == NULL)
4321 return NULL;
4322 return s->session->psk_identity;
4323}
4324
4325void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4326{
4327 s->psk_client_callback = cb;
4328}
4329
4330void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4331{
4332 ctx->psk_client_callback = cb;
4333}
4334
4335void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4336{
4337 s->psk_server_callback = cb;
4338}
4339
4340void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4341{
4342 ctx->psk_server_callback = cb;
4343}
4344#endif
4345
4346void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4347{
4348 s->psk_find_session_cb = cb;
4349}
4350
4351void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4352 SSL_psk_find_session_cb_func cb)
4353{
4354 ctx->psk_find_session_cb = cb;
4355}
4356
4357void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4358{
4359 s->psk_use_session_cb = cb;
4360}
4361
4362void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4363 SSL_psk_use_session_cb_func cb)
4364{
4365 ctx->psk_use_session_cb = cb;
4366}
4367
4368void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4369 void (*cb) (int write_p, int version,
4370 int content_type, const void *buf,
4371 size_t len, SSL *ssl, void *arg))
4372{
4373 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4374}
4375
4376void SSL_set_msg_callback(SSL *ssl,
4377 void (*cb) (int write_p, int version,
4378 int content_type, const void *buf,
4379 size_t len, SSL *ssl, void *arg))
4380{
4381 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4382}
4383
4384void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4385 int (*cb) (SSL *ssl,
4386 int
4387 is_forward_secure))
4388{
4389 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4390 (void (*)(void))cb);
4391}
4392
4393void SSL_set_not_resumable_session_callback(SSL *ssl,
4394 int (*cb) (SSL *ssl,
4395 int is_forward_secure))
4396{
4397 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4398 (void (*)(void))cb);
4399}
4400
4401void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4402 size_t (*cb) (SSL *ssl, int type,
4403 size_t len, void *arg))
4404{
4405 ctx->record_padding_cb = cb;
4406}
4407
4408void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4409{
4410 ctx->record_padding_arg = arg;
4411}
4412
4413void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4414{
4415 return ctx->record_padding_arg;
4416}
4417
4418int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4419{
4420 /* block size of 0 or 1 is basically no padding */
4421 if (block_size == 1)
4422 ctx->block_padding = 0;
4423 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4424 ctx->block_padding = block_size;
4425 else
4426 return 0;
4427 return 1;
4428}
4429
4430void SSL_set_record_padding_callback(SSL *ssl,
4431 size_t (*cb) (SSL *ssl, int type,
4432 size_t len, void *arg))
4433{
4434 ssl->record_padding_cb = cb;
4435}
4436
4437void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4438{
4439 ssl->record_padding_arg = arg;
4440}
4441
4442void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4443{
4444 return ssl->record_padding_arg;
4445}
4446
4447int SSL_set_block_padding(SSL *ssl, size_t block_size)
4448{
4449 /* block size of 0 or 1 is basically no padding */
4450 if (block_size == 1)
4451 ssl->block_padding = 0;
4452 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4453 ssl->block_padding = block_size;
4454 else
4455 return 0;
4456 return 1;
4457}
4458
4459int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4460{
4461 s->num_tickets = num_tickets;
4462
4463 return 1;
4464}
4465
4466size_t SSL_get_num_tickets(const SSL *s)
4467{
4468 return s->num_tickets;
4469}
4470
4471int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4472{
4473 ctx->num_tickets = num_tickets;
4474
4475 return 1;
4476}
4477
4478size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4479{
4480 return ctx->num_tickets;
4481}
4482
4483/*
4484 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4485 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4486 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4487 * Returns the newly allocated ctx;
4488 */
4489
4490EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4491{
4492 ssl_clear_hash_ctx(hash);
4493 *hash = EVP_MD_CTX_new();
4494 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4495 EVP_MD_CTX_free(*hash);
4496 *hash = NULL;
4497 return NULL;
4498 }
4499 return *hash;
4500}
4501
4502void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4503{
4504
4505 EVP_MD_CTX_free(*hash);
4506 *hash = NULL;
4507}
4508
4509/* Retrieve handshake hashes */
4510int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4511 size_t *hashlen)
4512{
4513 EVP_MD_CTX *ctx = NULL;
4514 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4515 int hashleni = EVP_MD_CTX_size(hdgst);
4516 int ret = 0;
4517
4518 if (hashleni < 0 || (size_t)hashleni > outlen) {
4519 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4520 ERR_R_INTERNAL_ERROR);
4521 goto err;
4522 }
4523
4524 ctx = EVP_MD_CTX_new();
4525 if (ctx == NULL)
4526 goto err;
4527
4528 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4529 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4530 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4531 ERR_R_INTERNAL_ERROR);
4532 goto err;
4533 }
4534
4535 *hashlen = hashleni;
4536
4537 ret = 1;
4538 err:
4539 EVP_MD_CTX_free(ctx);
4540 return ret;
4541}
4542
4543int SSL_session_reused(const SSL *s)
4544{
4545 return s->hit;
4546}
4547
4548int SSL_is_server(const SSL *s)
4549{
4550 return s->server;
4551}
4552
4553#if OPENSSL_API_COMPAT < 0x10100000L
4554void SSL_set_debug(SSL *s, int debug)
4555{
4556 /* Old function was do-nothing anyway... */
4557 (void)s;
4558 (void)debug;
4559}
4560#endif
4561
4562void SSL_set_security_level(SSL *s, int level)
4563{
4564 s->cert->sec_level = level;
4565}
4566
4567int SSL_get_security_level(const SSL *s)
4568{
4569 return s->cert->sec_level;
4570}
4571
4572void SSL_set_security_callback(SSL *s,
4573 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4574 int op, int bits, int nid,
4575 void *other, void *ex))
4576{
4577 s->cert->sec_cb = cb;
4578}
4579
4580int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4581 const SSL_CTX *ctx, int op,
4582 int bits, int nid, void *other,
4583 void *ex) {
4584 return s->cert->sec_cb;
4585}
4586
4587void SSL_set0_security_ex_data(SSL *s, void *ex)
4588{
4589 s->cert->sec_ex = ex;
4590}
4591
4592void *SSL_get0_security_ex_data(const SSL *s)
4593{
4594 return s->cert->sec_ex;
4595}
4596
4597void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4598{
4599 ctx->cert->sec_level = level;
4600}
4601
4602int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4603{
4604 return ctx->cert->sec_level;
4605}
4606
4607void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4608 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4609 int op, int bits, int nid,
4610 void *other, void *ex))
4611{
4612 ctx->cert->sec_cb = cb;
4613}
4614
4615int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4616 const SSL_CTX *ctx,
4617 int op, int bits,
4618 int nid,
4619 void *other,
4620 void *ex) {
4621 return ctx->cert->sec_cb;
4622}
4623
4624void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4625{
4626 ctx->cert->sec_ex = ex;
4627}
4628
4629void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4630{
4631 return ctx->cert->sec_ex;
4632}
4633
4634/*
4635 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4636 * can return unsigned long, instead of the generic long return value from the
4637 * control interface.
4638 */
4639unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4640{
4641 return ctx->options;
4642}
4643
4644unsigned long SSL_get_options(const SSL *s)
4645{
4646 return s->options;
4647}
4648
4649unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4650{
4651 return ctx->options |= op;
4652}
4653
4654unsigned long SSL_set_options(SSL *s, unsigned long op)
4655{
4656 return s->options |= op;
4657}
4658
4659unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4660{
4661 return ctx->options &= ~op;
4662}
4663
4664unsigned long SSL_clear_options(SSL *s, unsigned long op)
4665{
4666 return s->options &= ~op;
4667}
4668
4669STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4670{
4671 return s->verified_chain;
4672}
4673
4674IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4675
4676#ifndef OPENSSL_NO_CT
4677
4678/*
4679 * Moves SCTs from the |src| stack to the |dst| stack.
4680 * The source of each SCT will be set to |origin|.
4681 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4682 * the caller.
4683 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4684 */
4685static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4686 sct_source_t origin)
4687{
4688 int scts_moved = 0;
4689 SCT *sct = NULL;
4690
4691 if (*dst == NULL) {
4692 *dst = sk_SCT_new_null();
4693 if (*dst == NULL) {
4694 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4695 goto err;
4696 }
4697 }
4698
4699 while ((sct = sk_SCT_pop(src)) != NULL) {
4700 if (SCT_set_source(sct, origin) != 1)
4701 goto err;
4702
4703 if (sk_SCT_push(*dst, sct) <= 0)
4704 goto err;
4705 scts_moved += 1;
4706 }
4707
4708 return scts_moved;
4709 err:
4710 if (sct != NULL)
4711 sk_SCT_push(src, sct); /* Put the SCT back */
4712 return -1;
4713}
4714
4715/*
4716 * Look for data collected during ServerHello and parse if found.
4717 * Returns the number of SCTs extracted.
4718 */
4719static int ct_extract_tls_extension_scts(SSL *s)
4720{
4721 int scts_extracted = 0;
4722
4723 if (s->ext.scts != NULL) {
4724 const unsigned char *p = s->ext.scts;
4725 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4726
4727 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4728
4729 SCT_LIST_free(scts);
4730 }
4731
4732 return scts_extracted;
4733}
4734
4735/*
4736 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4737 * contains an SCT X509 extension. They will be stored in |s->scts|.
4738 * Returns:
4739 * - The number of SCTs extracted, assuming an OCSP response exists.
4740 * - 0 if no OCSP response exists or it contains no SCTs.
4741 * - A negative integer if an error occurs.
4742 */
4743static int ct_extract_ocsp_response_scts(SSL *s)
4744{
4745# ifndef OPENSSL_NO_OCSP
4746 int scts_extracted = 0;
4747 const unsigned char *p;
4748 OCSP_BASICRESP *br = NULL;
4749 OCSP_RESPONSE *rsp = NULL;
4750 STACK_OF(SCT) *scts = NULL;
4751 int i;
4752
4753 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4754 goto err;
4755
4756 p = s->ext.ocsp.resp;
4757 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4758 if (rsp == NULL)
4759 goto err;
4760
4761 br = OCSP_response_get1_basic(rsp);
4762 if (br == NULL)
4763 goto err;
4764
4765 for (i = 0; i < OCSP_resp_count(br); ++i) {
4766 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4767
4768 if (single == NULL)
4769 continue;
4770
4771 scts =
4772 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4773 scts_extracted =
4774 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4775 if (scts_extracted < 0)
4776 goto err;
4777 }
4778 err:
4779 SCT_LIST_free(scts);
4780 OCSP_BASICRESP_free(br);
4781 OCSP_RESPONSE_free(rsp);
4782 return scts_extracted;
4783# else
4784 /* Behave as if no OCSP response exists */
4785 return 0;
4786# endif
4787}
4788
4789/*
4790 * Attempts to extract SCTs from the peer certificate.
4791 * Return the number of SCTs extracted, or a negative integer if an error
4792 * occurs.
4793 */
4794static int ct_extract_x509v3_extension_scts(SSL *s)
4795{
4796 int scts_extracted = 0;
4797 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4798
4799 if (cert != NULL) {
4800 STACK_OF(SCT) *scts =
4801 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4802
4803 scts_extracted =
4804 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4805
4806 SCT_LIST_free(scts);
4807 }
4808
4809 return scts_extracted;
4810}
4811
4812/*
4813 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4814 * response (if it exists) and X509v3 extensions in the certificate.
4815 * Returns NULL if an error occurs.
4816 */
4817const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4818{
4819 if (!s->scts_parsed) {
4820 if (ct_extract_tls_extension_scts(s) < 0 ||
4821 ct_extract_ocsp_response_scts(s) < 0 ||
4822 ct_extract_x509v3_extension_scts(s) < 0)
4823 goto err;
4824
4825 s->scts_parsed = 1;
4826 }
4827 return s->scts;
4828 err:
4829 return NULL;
4830}
4831
4832static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4833 const STACK_OF(SCT) *scts, void *unused_arg)
4834{
4835 return 1;
4836}
4837
4838static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4839 const STACK_OF(SCT) *scts, void *unused_arg)
4840{
4841 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4842 int i;
4843
4844 for (i = 0; i < count; ++i) {
4845 SCT *sct = sk_SCT_value(scts, i);
4846 int status = SCT_get_validation_status(sct);
4847
4848 if (status == SCT_VALIDATION_STATUS_VALID)
4849 return 1;
4850 }
4851 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4852 return 0;
4853}
4854
4855int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4856 void *arg)
4857{
4858 /*
4859 * Since code exists that uses the custom extension handler for CT, look
4860 * for this and throw an error if they have already registered to use CT.
4861 */
4862 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4863 TLSEXT_TYPE_signed_certificate_timestamp))
4864 {
4865 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4866 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4867 return 0;
4868 }
4869
4870 if (callback != NULL) {
4871 /*
4872 * If we are validating CT, then we MUST accept SCTs served via OCSP
4873 */
4874 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4875 return 0;
4876 }
4877
4878 s->ct_validation_callback = callback;
4879 s->ct_validation_callback_arg = arg;
4880
4881 return 1;
4882}
4883
4884int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4885 ssl_ct_validation_cb callback, void *arg)
4886{
4887 /*
4888 * Since code exists that uses the custom extension handler for CT, look for
4889 * this and throw an error if they have already registered to use CT.
4890 */
4891 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4892 TLSEXT_TYPE_signed_certificate_timestamp))
4893 {
4894 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4895 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4896 return 0;
4897 }
4898
4899 ctx->ct_validation_callback = callback;
4900 ctx->ct_validation_callback_arg = arg;
4901 return 1;
4902}
4903
4904int SSL_ct_is_enabled(const SSL *s)
4905{
4906 return s->ct_validation_callback != NULL;
4907}
4908
4909int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4910{
4911 return ctx->ct_validation_callback != NULL;
4912}
4913
4914int ssl_validate_ct(SSL *s)
4915{
4916 int ret = 0;
4917 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4918 X509 *issuer;
4919 SSL_DANE *dane = &s->dane;
4920 CT_POLICY_EVAL_CTX *ctx = NULL;
4921 const STACK_OF(SCT) *scts;
4922
4923 /*
4924 * If no callback is set, the peer is anonymous, or its chain is invalid,
4925 * skip SCT validation - just return success. Applications that continue
4926 * handshakes without certificates, with unverified chains, or pinned leaf
4927 * certificates are outside the scope of the WebPKI and CT.
4928 *
4929 * The above exclusions notwithstanding the vast majority of peers will
4930 * have rather ordinary certificate chains validated by typical
4931 * applications that perform certificate verification and therefore will
4932 * process SCTs when enabled.
4933 */
4934 if (s->ct_validation_callback == NULL || cert == NULL ||
4935 s->verify_result != X509_V_OK ||
4936 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4937 return 1;
4938
4939 /*
4940 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4941 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4942 */
4943 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4944 switch (dane->mtlsa->usage) {
4945 case DANETLS_USAGE_DANE_TA:
4946 case DANETLS_USAGE_DANE_EE:
4947 return 1;
4948 }
4949 }
4950
4951 ctx = CT_POLICY_EVAL_CTX_new();
4952 if (ctx == NULL) {
4953 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
4954 ERR_R_MALLOC_FAILURE);
4955 goto end;
4956 }
4957
4958 issuer = sk_X509_value(s->verified_chain, 1);
4959 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4960 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4961 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4962 CT_POLICY_EVAL_CTX_set_time(
4963 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4964
4965 scts = SSL_get0_peer_scts(s);
4966
4967 /*
4968 * This function returns success (> 0) only when all the SCTs are valid, 0
4969 * when some are invalid, and < 0 on various internal errors (out of
4970 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4971 * reason to abort the handshake, that decision is up to the callback.
4972 * Therefore, we error out only in the unexpected case that the return
4973 * value is negative.
4974 *
4975 * XXX: One might well argue that the return value of this function is an
4976 * unfortunate design choice. Its job is only to determine the validation
4977 * status of each of the provided SCTs. So long as it correctly separates
4978 * the wheat from the chaff it should return success. Failure in this case
4979 * ought to correspond to an inability to carry out its duties.
4980 */
4981 if (SCT_LIST_validate(scts, ctx) < 0) {
4982 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4983 SSL_R_SCT_VERIFICATION_FAILED);
4984 goto end;
4985 }
4986
4987 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4988 if (ret < 0)
4989 ret = 0; /* This function returns 0 on failure */
4990 if (!ret)
4991 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4992 SSL_R_CALLBACK_FAILED);
4993
4994 end:
4995 CT_POLICY_EVAL_CTX_free(ctx);
4996 /*
4997 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4998 * failure return code here. Also the application may wish the complete
4999 * the handshake, and then disconnect cleanly at a higher layer, after
5000 * checking the verification status of the completed connection.
5001 *
5002 * We therefore force a certificate verification failure which will be
5003 * visible via SSL_get_verify_result() and cached as part of any resumed
5004 * session.
5005 *
5006 * Note: the permissive callback is for information gathering only, always
5007 * returns success, and does not affect verification status. Only the
5008 * strict callback or a custom application-specified callback can trigger
5009 * connection failure or record a verification error.
5010 */
5011 if (ret <= 0)
5012 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5013 return ret;
5014}
5015
5016int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5017{
5018 switch (validation_mode) {
5019 default:
5020 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5021 return 0;
5022 case SSL_CT_VALIDATION_PERMISSIVE:
5023 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5024 case SSL_CT_VALIDATION_STRICT:
5025 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5026 }
5027}
5028
5029int SSL_enable_ct(SSL *s, int validation_mode)
5030{
5031 switch (validation_mode) {
5032 default:
5033 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5034 return 0;
5035 case SSL_CT_VALIDATION_PERMISSIVE:
5036 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5037 case SSL_CT_VALIDATION_STRICT:
5038 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5039 }
5040}
5041
5042int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5043{
5044 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5045}
5046
5047int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5048{
5049 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5050}
5051
5052void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5053{
5054 CTLOG_STORE_free(ctx->ctlog_store);
5055 ctx->ctlog_store = logs;
5056}
5057
5058const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5059{
5060 return ctx->ctlog_store;
5061}
5062
5063#endif /* OPENSSL_NO_CT */
5064
5065void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5066 void *arg)
5067{
5068 c->client_hello_cb = cb;
5069 c->client_hello_cb_arg = arg;
5070}
5071
5072int SSL_client_hello_isv2(SSL *s)
5073{
5074 if (s->clienthello == NULL)
5075 return 0;
5076 return s->clienthello->isv2;
5077}
5078
5079unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5080{
5081 if (s->clienthello == NULL)
5082 return 0;
5083 return s->clienthello->legacy_version;
5084}
5085
5086size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5087{
5088 if (s->clienthello == NULL)
5089 return 0;
5090 if (out != NULL)
5091 *out = s->clienthello->random;
5092 return SSL3_RANDOM_SIZE;
5093}
5094
5095size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5096{
5097 if (s->clienthello == NULL)
5098 return 0;
5099 if (out != NULL)
5100 *out = s->clienthello->session_id;
5101 return s->clienthello->session_id_len;
5102}
5103
5104size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5105{
5106 if (s->clienthello == NULL)
5107 return 0;
5108 if (out != NULL)
5109 *out = PACKET_data(&s->clienthello->ciphersuites);
5110 return PACKET_remaining(&s->clienthello->ciphersuites);
5111}
5112
5113size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5114{
5115 if (s->clienthello == NULL)
5116 return 0;
5117 if (out != NULL)
5118 *out = s->clienthello->compressions;
5119 return s->clienthello->compressions_len;
5120}
5121
5122int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5123{
5124 RAW_EXTENSION *ext;
5125 int *present;
5126 size_t num = 0, i;
5127
5128 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5129 return 0;
5130 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5131 ext = s->clienthello->pre_proc_exts + i;
5132 if (ext->present)
5133 num++;
5134 }
5135 if (num == 0) {
5136 *out = NULL;
5137 *outlen = 0;
5138 return 1;
5139 }
5140 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5141 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5142 ERR_R_MALLOC_FAILURE);
5143 return 0;
5144 }
5145 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5146 ext = s->clienthello->pre_proc_exts + i;
5147 if (ext->present) {
5148 if (ext->received_order >= num)
5149 goto err;
5150 present[ext->received_order] = ext->type;
5151 }
5152 }
5153 *out = present;
5154 *outlen = num;
5155 return 1;
5156 err:
5157 OPENSSL_free(present);
5158 return 0;
5159}
5160
5161int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5162 size_t *outlen)
5163{
5164 size_t i;
5165 RAW_EXTENSION *r;
5166
5167 if (s->clienthello == NULL)
5168 return 0;
5169 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5170 r = s->clienthello->pre_proc_exts + i;
5171 if (r->present && r->type == type) {
5172 if (out != NULL)
5173 *out = PACKET_data(&r->data);
5174 if (outlen != NULL)
5175 *outlen = PACKET_remaining(&r->data);
5176 return 1;
5177 }
5178 }
5179 return 0;
5180}
5181
5182int SSL_free_buffers(SSL *ssl)
5183{
5184 RECORD_LAYER *rl = &ssl->rlayer;
5185
5186 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5187 return 0;
5188
5189 RECORD_LAYER_release(rl);
5190 return 1;
5191}
5192
5193int SSL_alloc_buffers(SSL *ssl)
5194{
5195 return ssl3_setup_buffers(ssl);
5196}
5197
5198void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5199{
5200 ctx->keylog_callback = cb;
5201}
5202
5203SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5204{
5205 return ctx->keylog_callback;
5206}
5207
5208static int nss_keylog_int(const char *prefix,
5209 SSL *ssl,
5210 const uint8_t *parameter_1,
5211 size_t parameter_1_len,
5212 const uint8_t *parameter_2,
5213 size_t parameter_2_len)
5214{
5215 char *out = NULL;
5216 char *cursor = NULL;
5217 size_t out_len = 0;
5218 size_t i;
5219 size_t prefix_len;
5220
5221 if (ssl->ctx->keylog_callback == NULL)
5222 return 1;
5223
5224 /*
5225 * Our output buffer will contain the following strings, rendered with
5226 * space characters in between, terminated by a NULL character: first the
5227 * prefix, then the first parameter, then the second parameter. The
5228 * meaning of each parameter depends on the specific key material being
5229 * logged. Note that the first and second parameters are encoded in
5230 * hexadecimal, so we need a buffer that is twice their lengths.
5231 */
5232 prefix_len = strlen(prefix);
5233 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5234 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5235 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5236 ERR_R_MALLOC_FAILURE);
5237 return 0;
5238 }
5239
5240 strcpy(cursor, prefix);
5241 cursor += prefix_len;
5242 *cursor++ = ' ';
5243
5244 for (i = 0; i < parameter_1_len; i++) {
5245 sprintf(cursor, "%02x", parameter_1[i]);
5246 cursor += 2;
5247 }
5248 *cursor++ = ' ';
5249
5250 for (i = 0; i < parameter_2_len; i++) {
5251 sprintf(cursor, "%02x", parameter_2[i]);
5252 cursor += 2;
5253 }
5254 *cursor = '\0';
5255
5256 ssl->ctx->keylog_callback(ssl, (const char *)out);
5257 OPENSSL_clear_free(out, out_len);
5258 return 1;
5259
5260}
5261
5262int ssl_log_rsa_client_key_exchange(SSL *ssl,
5263 const uint8_t *encrypted_premaster,
5264 size_t encrypted_premaster_len,
5265 const uint8_t *premaster,
5266 size_t premaster_len)
5267{
5268 if (encrypted_premaster_len < 8) {
5269 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5270 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5271 return 0;
5272 }
5273
5274 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5275 return nss_keylog_int("RSA",
5276 ssl,
5277 encrypted_premaster,
5278 8,
5279 premaster,
5280 premaster_len);
5281}
5282
5283int ssl_log_secret(SSL *ssl,
5284 const char *label,
5285 const uint8_t *secret,
5286 size_t secret_len)
5287{
5288 return nss_keylog_int(label,
5289 ssl,
5290 ssl->s3->client_random,
5291 SSL3_RANDOM_SIZE,
5292 secret,
5293 secret_len);
5294}
5295
5296#define SSLV2_CIPHER_LEN 3
5297
5298int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5299{
5300 int n;
5301
5302 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5303
5304 if (PACKET_remaining(cipher_suites) == 0) {
5305 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5306 SSL_R_NO_CIPHERS_SPECIFIED);
5307 return 0;
5308 }
5309
5310 if (PACKET_remaining(cipher_suites) % n != 0) {
5311 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5312 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5313 return 0;
5314 }
5315
5316 OPENSSL_free(s->s3->tmp.ciphers_raw);
5317 s->s3->tmp.ciphers_raw = NULL;
5318 s->s3->tmp.ciphers_rawlen = 0;
5319
5320 if (sslv2format) {
5321 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5322 PACKET sslv2ciphers = *cipher_suites;
5323 unsigned int leadbyte;
5324 unsigned char *raw;
5325
5326 /*
5327 * We store the raw ciphers list in SSLv3+ format so we need to do some
5328 * preprocessing to convert the list first. If there are any SSLv2 only
5329 * ciphersuites with a non-zero leading byte then we are going to
5330 * slightly over allocate because we won't store those. But that isn't a
5331 * problem.
5332 */
5333 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5334 s->s3->tmp.ciphers_raw = raw;
5335 if (raw == NULL) {
5336 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5337 ERR_R_MALLOC_FAILURE);
5338 return 0;
5339 }
5340 for (s->s3->tmp.ciphers_rawlen = 0;
5341 PACKET_remaining(&sslv2ciphers) > 0;
5342 raw += TLS_CIPHER_LEN) {
5343 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5344 || (leadbyte == 0
5345 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5346 TLS_CIPHER_LEN))
5347 || (leadbyte != 0
5348 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5349 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5350 SSL_R_BAD_PACKET);
5351 OPENSSL_free(s->s3->tmp.ciphers_raw);
5352 s->s3->tmp.ciphers_raw = NULL;
5353 s->s3->tmp.ciphers_rawlen = 0;
5354 return 0;
5355 }
5356 if (leadbyte == 0)
5357 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5358 }
5359 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5360 &s->s3->tmp.ciphers_rawlen)) {
5361 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5362 ERR_R_INTERNAL_ERROR);
5363 return 0;
5364 }
5365 return 1;
5366}
5367
5368int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5369 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5370 STACK_OF(SSL_CIPHER) **scsvs)
5371{
5372 PACKET pkt;
5373
5374 if (!PACKET_buf_init(&pkt, bytes, len))
5375 return 0;
5376 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5377}
5378
5379int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5380 STACK_OF(SSL_CIPHER) **skp,
5381 STACK_OF(SSL_CIPHER) **scsvs_out,
5382 int sslv2format, int fatal)
5383{
5384 const SSL_CIPHER *c;
5385 STACK_OF(SSL_CIPHER) *sk = NULL;
5386 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5387 int n;
5388 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5389 unsigned char cipher[SSLV2_CIPHER_LEN];
5390
5391 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5392
5393 if (PACKET_remaining(cipher_suites) == 0) {
5394 if (fatal)
5395 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5396 SSL_R_NO_CIPHERS_SPECIFIED);
5397 else
5398 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5399 return 0;
5400 }
5401
5402 if (PACKET_remaining(cipher_suites) % n != 0) {
5403 if (fatal)
5404 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5405 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5406 else
5407 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5408 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5409 return 0;
5410 }
5411
5412 sk = sk_SSL_CIPHER_new_null();
5413 scsvs = sk_SSL_CIPHER_new_null();
5414 if (sk == NULL || scsvs == NULL) {
5415 if (fatal)
5416 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5417 ERR_R_MALLOC_FAILURE);
5418 else
5419 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5420 goto err;
5421 }
5422
5423 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5424 /*
5425 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5426 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5427 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5428 */
5429 if (sslv2format && cipher[0] != '\0')
5430 continue;
5431
5432 /* For SSLv2-compat, ignore leading 0-byte. */
5433 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5434 if (c != NULL) {
5435 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5436 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5437 if (fatal)
5438 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5439 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5440 else
5441 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5442 goto err;
5443 }
5444 }
5445 }
5446 if (PACKET_remaining(cipher_suites) > 0) {
5447 if (fatal)
5448 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5449 SSL_R_BAD_LENGTH);
5450 else
5451 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5452 goto err;
5453 }
5454
5455 if (skp != NULL)
5456 *skp = sk;
5457 else
5458 sk_SSL_CIPHER_free(sk);
5459 if (scsvs_out != NULL)
5460 *scsvs_out = scsvs;
5461 else
5462 sk_SSL_CIPHER_free(scsvs);
5463 return 1;
5464 err:
5465 sk_SSL_CIPHER_free(sk);
5466 sk_SSL_CIPHER_free(scsvs);
5467 return 0;
5468}
5469
5470int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5471{
5472 ctx->max_early_data = max_early_data;
5473
5474 return 1;
5475}
5476
5477uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5478{
5479 return ctx->max_early_data;
5480}
5481
5482int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5483{
5484 s->max_early_data = max_early_data;
5485
5486 return 1;
5487}
5488
5489uint32_t SSL_get_max_early_data(const SSL *s)
5490{
5491 return s->max_early_data;
5492}
5493
5494int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5495{
5496 ctx->recv_max_early_data = recv_max_early_data;
5497
5498 return 1;
5499}
5500
5501uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5502{
5503 return ctx->recv_max_early_data;
5504}
5505
5506int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5507{
5508 s->recv_max_early_data = recv_max_early_data;
5509
5510 return 1;
5511}
5512
5513uint32_t SSL_get_recv_max_early_data(const SSL *s)
5514{
5515 return s->recv_max_early_data;
5516}
5517
5518__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5519{
5520 /* Return any active Max Fragment Len extension */
5521 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5522 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5523
5524 /* return current SSL connection setting */
5525 return ssl->max_send_fragment;
5526}
5527
5528__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5529{
5530 /* Return a value regarding an active Max Fragment Len extension */
5531 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5532 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5533 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5534
5535 /* else limit |split_send_fragment| to current |max_send_fragment| */
5536 if (ssl->split_send_fragment > ssl->max_send_fragment)
5537 return ssl->max_send_fragment;
5538
5539 /* return current SSL connection setting */
5540 return ssl->split_send_fragment;
5541}
5542
5543int SSL_stateless(SSL *s)
5544{
5545 int ret;
5546
5547 /* Ensure there is no state left over from a previous invocation */
5548 if (!SSL_clear(s))
5549 return 0;
5550
5551 ERR_clear_error();
5552
5553 s->s3->flags |= TLS1_FLAGS_STATELESS;
5554 ret = SSL_accept(s);
5555 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5556
5557 if (ret > 0 && s->ext.cookieok)
5558 return 1;
5559
5560 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5561 return 0;
5562
5563 return -1;
5564}
5565
5566void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5567{
5568 ctx->pha_enabled = val;
5569}
5570
5571void SSL_set_post_handshake_auth(SSL *ssl, int val)
5572{
5573 ssl->pha_enabled = val;
5574}
5575
5576int SSL_verify_client_post_handshake(SSL *ssl)
5577{
5578 if (!SSL_IS_TLS13(ssl)) {
5579 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5580 return 0;
5581 }
5582 if (!ssl->server) {
5583 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5584 return 0;
5585 }
5586
5587 if (!SSL_is_init_finished(ssl)) {
5588 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5589 return 0;
5590 }
5591
5592 switch (ssl->post_handshake_auth) {
5593 case SSL_PHA_NONE:
5594 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5595 return 0;
5596 default:
5597 case SSL_PHA_EXT_SENT:
5598 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5599 return 0;
5600 case SSL_PHA_EXT_RECEIVED:
5601 break;
5602 case SSL_PHA_REQUEST_PENDING:
5603 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5604 return 0;
5605 case SSL_PHA_REQUESTED:
5606 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5607 return 0;
5608 }
5609
5610 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5611
5612 /* checks verify_mode and algorithm_auth */
5613 if (!send_certificate_request(ssl)) {
5614 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5615 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5616 return 0;
5617 }
5618
5619 ossl_statem_set_in_init(ssl, 1);
5620 return 1;
5621}
5622
5623int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5624 SSL_CTX_generate_session_ticket_fn gen_cb,
5625 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5626 void *arg)
5627{
5628 ctx->generate_ticket_cb = gen_cb;
5629 ctx->decrypt_ticket_cb = dec_cb;
5630 ctx->ticket_cb_data = arg;
5631 return 1;
5632}
5633
5634void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5635 SSL_allow_early_data_cb_fn cb,
5636 void *arg)
5637{
5638 ctx->allow_early_data_cb = cb;
5639 ctx->allow_early_data_cb_data = arg;
5640}
5641
5642void SSL_set_allow_early_data_cb(SSL *s,
5643 SSL_allow_early_data_cb_fn cb,
5644 void *arg)
5645{
5646 s->allow_early_data_cb = cb;
5647 s->allow_early_data_cb_data = arg;
5648}
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