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source: vbox/trunk/src/libs/openssl-1.1.1k/ssl/ssl_lib.c@ 91527

Last change on this file since 91527 was 90293, checked in by vboxsync, 3 years ago

openssl-1.1.1k: Applied and adjusted our OpenSSL changes to 1.1.1k. bugref:10072
File size: 156.9 KB
Line 
1/*
2 * Copyright 1995-2021 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 s->ext.ecpointformats_len = 0;
784 goto err;
785 }
786 s->ext.ecpointformats_len =
787 ctx->ext.ecpointformats_len;
788 }
789 if (ctx->ext.supportedgroups) {
790 s->ext.supportedgroups =
791 OPENSSL_memdup(ctx->ext.supportedgroups,
792 ctx->ext.supportedgroups_len
793 * sizeof(*ctx->ext.supportedgroups));
794 if (!s->ext.supportedgroups) {
795 s->ext.supportedgroups_len = 0;
796 goto err;
797 }
798 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
799 }
800#endif
801#ifndef OPENSSL_NO_NEXTPROTONEG
802 s->ext.npn = NULL;
803#endif
804
805 if (s->ctx->ext.alpn) {
806 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
807 if (s->ext.alpn == NULL) {
808 s->ext.alpn_len = 0;
809 goto err;
810 }
811 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
812 s->ext.alpn_len = s->ctx->ext.alpn_len;
813 }
814
815 s->verified_chain = NULL;
816 s->verify_result = X509_V_OK;
817
818 s->default_passwd_callback = ctx->default_passwd_callback;
819 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
820
821 s->method = ctx->method;
822
823 s->key_update = SSL_KEY_UPDATE_NONE;
824
825 s->allow_early_data_cb = ctx->allow_early_data_cb;
826 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
827
828 if (!s->method->ssl_new(s))
829 goto err;
830
831 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
832
833 if (!SSL_clear(s))
834 goto err;
835
836 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
837 goto err;
838
839#ifndef OPENSSL_NO_PSK
840 s->psk_client_callback = ctx->psk_client_callback;
841 s->psk_server_callback = ctx->psk_server_callback;
842#endif
843 s->psk_find_session_cb = ctx->psk_find_session_cb;
844 s->psk_use_session_cb = ctx->psk_use_session_cb;
845
846 s->job = NULL;
847
848#ifndef OPENSSL_NO_CT
849 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
850 ctx->ct_validation_callback_arg))
851 goto err;
852#endif
853
854 return s;
855 err:
856 SSL_free(s);
857 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
858 return NULL;
859}
860
861int SSL_is_dtls(const SSL *s)
862{
863 return SSL_IS_DTLS(s) ? 1 : 0;
864}
865
866int SSL_up_ref(SSL *s)
867{
868 int i;
869
870 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
871 return 0;
872
873 REF_PRINT_COUNT("SSL", s);
874 REF_ASSERT_ISNT(i < 2);
875 return ((i > 1) ? 1 : 0);
876}
877
878int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
879 unsigned int sid_ctx_len)
880{
881 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
882 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
883 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
884 return 0;
885 }
886 ctx->sid_ctx_length = sid_ctx_len;
887 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
888
889 return 1;
890}
891
892int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
893 unsigned int sid_ctx_len)
894{
895 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
896 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
897 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
898 return 0;
899 }
900 ssl->sid_ctx_length = sid_ctx_len;
901 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
902
903 return 1;
904}
905
906int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
907{
908 CRYPTO_THREAD_write_lock(ctx->lock);
909 ctx->generate_session_id = cb;
910 CRYPTO_THREAD_unlock(ctx->lock);
911 return 1;
912}
913
914int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
915{
916 CRYPTO_THREAD_write_lock(ssl->lock);
917 ssl->generate_session_id = cb;
918 CRYPTO_THREAD_unlock(ssl->lock);
919 return 1;
920}
921
922int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
923 unsigned int id_len)
924{
925 /*
926 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
927 * we can "construct" a session to give us the desired check - i.e. to
928 * find if there's a session in the hash table that would conflict with
929 * any new session built out of this id/id_len and the ssl_version in use
930 * by this SSL.
931 */
932 SSL_SESSION r, *p;
933
934 if (id_len > sizeof(r.session_id))
935 return 0;
936
937 r.ssl_version = ssl->version;
938 r.session_id_length = id_len;
939 memcpy(r.session_id, id, id_len);
940
941 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
942 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
943 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
944 return (p != NULL);
945}
946
947int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
948{
949 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
950}
951
952int SSL_set_purpose(SSL *s, int purpose)
953{
954 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
955}
956
957int SSL_CTX_set_trust(SSL_CTX *s, int trust)
958{
959 return X509_VERIFY_PARAM_set_trust(s->param, trust);
960}
961
962int SSL_set_trust(SSL *s, int trust)
963{
964 return X509_VERIFY_PARAM_set_trust(s->param, trust);
965}
966
967int SSL_set1_host(SSL *s, const char *hostname)
968{
969 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
970}
971
972int SSL_add1_host(SSL *s, const char *hostname)
973{
974 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
975}
976
977void SSL_set_hostflags(SSL *s, unsigned int flags)
978{
979 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
980}
981
982const char *SSL_get0_peername(SSL *s)
983{
984 return X509_VERIFY_PARAM_get0_peername(s->param);
985}
986
987int SSL_CTX_dane_enable(SSL_CTX *ctx)
988{
989 return dane_ctx_enable(&ctx->dane);
990}
991
992unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
993{
994 unsigned long orig = ctx->dane.flags;
995
996 ctx->dane.flags |= flags;
997 return orig;
998}
999
1000unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1001{
1002 unsigned long orig = ctx->dane.flags;
1003
1004 ctx->dane.flags &= ~flags;
1005 return orig;
1006}
1007
1008int SSL_dane_enable(SSL *s, const char *basedomain)
1009{
1010 SSL_DANE *dane = &s->dane;
1011
1012 if (s->ctx->dane.mdmax == 0) {
1013 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1014 return 0;
1015 }
1016 if (dane->trecs != NULL) {
1017 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1018 return 0;
1019 }
1020
1021 /*
1022 * Default SNI name. This rejects empty names, while set1_host below
1023 * accepts them and disables host name checks. To avoid side-effects with
1024 * invalid input, set the SNI name first.
1025 */
1026 if (s->ext.hostname == NULL) {
1027 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1028 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1029 return -1;
1030 }
1031 }
1032
1033 /* Primary RFC6125 reference identifier */
1034 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1035 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1036 return -1;
1037 }
1038
1039 dane->mdpth = -1;
1040 dane->pdpth = -1;
1041 dane->dctx = &s->ctx->dane;
1042 dane->trecs = sk_danetls_record_new_null();
1043
1044 if (dane->trecs == NULL) {
1045 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1046 return -1;
1047 }
1048 return 1;
1049}
1050
1051unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1052{
1053 unsigned long orig = ssl->dane.flags;
1054
1055 ssl->dane.flags |= flags;
1056 return orig;
1057}
1058
1059unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1060{
1061 unsigned long orig = ssl->dane.flags;
1062
1063 ssl->dane.flags &= ~flags;
1064 return orig;
1065}
1066
1067int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1068{
1069 SSL_DANE *dane = &s->dane;
1070
1071 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1072 return -1;
1073 if (dane->mtlsa) {
1074 if (mcert)
1075 *mcert = dane->mcert;
1076 if (mspki)
1077 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1078 }
1079 return dane->mdpth;
1080}
1081
1082int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1083 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1084{
1085 SSL_DANE *dane = &s->dane;
1086
1087 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1088 return -1;
1089 if (dane->mtlsa) {
1090 if (usage)
1091 *usage = dane->mtlsa->usage;
1092 if (selector)
1093 *selector = dane->mtlsa->selector;
1094 if (mtype)
1095 *mtype = dane->mtlsa->mtype;
1096 if (data)
1097 *data = dane->mtlsa->data;
1098 if (dlen)
1099 *dlen = dane->mtlsa->dlen;
1100 }
1101 return dane->mdpth;
1102}
1103
1104SSL_DANE *SSL_get0_dane(SSL *s)
1105{
1106 return &s->dane;
1107}
1108
1109int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1110 uint8_t mtype, unsigned const char *data, size_t dlen)
1111{
1112 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1113}
1114
1115int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1116 uint8_t ord)
1117{
1118 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1119}
1120
1121int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1122{
1123 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1124}
1125
1126int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1127{
1128 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1129}
1130
1131X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1132{
1133 return ctx->param;
1134}
1135
1136X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1137{
1138 return ssl->param;
1139}
1140
1141void SSL_certs_clear(SSL *s)
1142{
1143 ssl_cert_clear_certs(s->cert);
1144}
1145
1146void SSL_free(SSL *s)
1147{
1148 int i;
1149
1150 if (s == NULL)
1151 return;
1152 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1153 REF_PRINT_COUNT("SSL", s);
1154 if (i > 0)
1155 return;
1156 REF_ASSERT_ISNT(i < 0);
1157
1158 X509_VERIFY_PARAM_free(s->param);
1159 dane_final(&s->dane);
1160 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1161
1162 /* Ignore return value */
1163 ssl_free_wbio_buffer(s);
1164
1165 BIO_free_all(s->wbio);
1166 BIO_free_all(s->rbio);
1167
1168 BUF_MEM_free(s->init_buf);
1169
1170 /* add extra stuff */
1171 sk_SSL_CIPHER_free(s->cipher_list);
1172 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1173 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1174 sk_SSL_CIPHER_free(s->peer_ciphers);
1175
1176 /* Make the next call work :-) */
1177 if (s->session != NULL) {
1178 ssl_clear_bad_session(s);
1179 SSL_SESSION_free(s->session);
1180 }
1181 SSL_SESSION_free(s->psksession);
1182 OPENSSL_free(s->psksession_id);
1183
1184 clear_ciphers(s);
1185
1186 ssl_cert_free(s->cert);
1187 OPENSSL_free(s->shared_sigalgs);
1188 /* Free up if allocated */
1189
1190 OPENSSL_free(s->ext.hostname);
1191 SSL_CTX_free(s->session_ctx);
1192#ifndef OPENSSL_NO_EC
1193 OPENSSL_free(s->ext.ecpointformats);
1194 OPENSSL_free(s->ext.peer_ecpointformats);
1195 OPENSSL_free(s->ext.supportedgroups);
1196 OPENSSL_free(s->ext.peer_supportedgroups);
1197#endif /* OPENSSL_NO_EC */
1198 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1199#ifndef OPENSSL_NO_OCSP
1200 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1201#endif
1202#ifndef OPENSSL_NO_CT
1203 SCT_LIST_free(s->scts);
1204 OPENSSL_free(s->ext.scts);
1205#endif
1206 OPENSSL_free(s->ext.ocsp.resp);
1207 OPENSSL_free(s->ext.alpn);
1208 OPENSSL_free(s->ext.tls13_cookie);
1209 if (s->clienthello != NULL)
1210 OPENSSL_free(s->clienthello->pre_proc_exts);
1211 OPENSSL_free(s->clienthello);
1212 OPENSSL_free(s->pha_context);
1213 EVP_MD_CTX_free(s->pha_dgst);
1214
1215 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1216 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1217
1218 sk_X509_pop_free(s->verified_chain, X509_free);
1219
1220 if (s->method != NULL)
1221 s->method->ssl_free(s);
1222
1223 RECORD_LAYER_release(&s->rlayer);
1224
1225 SSL_CTX_free(s->ctx);
1226
1227 ASYNC_WAIT_CTX_free(s->waitctx);
1228
1229#if !defined(OPENSSL_NO_NEXTPROTONEG)
1230 OPENSSL_free(s->ext.npn);
1231#endif
1232
1233#ifndef OPENSSL_NO_SRTP
1234 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1235#endif
1236
1237 CRYPTO_THREAD_lock_free(s->lock);
1238
1239 OPENSSL_free(s);
1240}
1241
1242void SSL_set0_rbio(SSL *s, BIO *rbio)
1243{
1244 BIO_free_all(s->rbio);
1245 s->rbio = rbio;
1246}
1247
1248void SSL_set0_wbio(SSL *s, BIO *wbio)
1249{
1250 /*
1251 * If the output buffering BIO is still in place, remove it
1252 */
1253 if (s->bbio != NULL)
1254 s->wbio = BIO_pop(s->wbio);
1255
1256 BIO_free_all(s->wbio);
1257 s->wbio = wbio;
1258
1259 /* Re-attach |bbio| to the new |wbio|. */
1260 if (s->bbio != NULL)
1261 s->wbio = BIO_push(s->bbio, s->wbio);
1262}
1263
1264void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1265{
1266 /*
1267 * For historical reasons, this function has many different cases in
1268 * ownership handling.
1269 */
1270
1271 /* If nothing has changed, do nothing */
1272 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1273 return;
1274
1275 /*
1276 * If the two arguments are equal then one fewer reference is granted by the
1277 * caller than we want to take
1278 */
1279 if (rbio != NULL && rbio == wbio)
1280 BIO_up_ref(rbio);
1281
1282 /*
1283 * If only the wbio is changed only adopt one reference.
1284 */
1285 if (rbio == SSL_get_rbio(s)) {
1286 SSL_set0_wbio(s, wbio);
1287 return;
1288 }
1289 /*
1290 * There is an asymmetry here for historical reasons. If only the rbio is
1291 * changed AND the rbio and wbio were originally different, then we only
1292 * adopt one reference.
1293 */
1294 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1295 SSL_set0_rbio(s, rbio);
1296 return;
1297 }
1298
1299 /* Otherwise, adopt both references. */
1300 SSL_set0_rbio(s, rbio);
1301 SSL_set0_wbio(s, wbio);
1302}
1303
1304BIO *SSL_get_rbio(const SSL *s)
1305{
1306 return s->rbio;
1307}
1308
1309BIO *SSL_get_wbio(const SSL *s)
1310{
1311 if (s->bbio != NULL) {
1312 /*
1313 * If |bbio| is active, the true caller-configured BIO is its
1314 * |next_bio|.
1315 */
1316 return BIO_next(s->bbio);
1317 }
1318 return s->wbio;
1319}
1320
1321int SSL_get_fd(const SSL *s)
1322{
1323 return SSL_get_rfd(s);
1324}
1325
1326int SSL_get_rfd(const SSL *s)
1327{
1328 int ret = -1;
1329 BIO *b, *r;
1330
1331 b = SSL_get_rbio(s);
1332 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1333 if (r != NULL)
1334 BIO_get_fd(r, &ret);
1335 return ret;
1336}
1337
1338int SSL_get_wfd(const SSL *s)
1339{
1340 int ret = -1;
1341 BIO *b, *r;
1342
1343 b = SSL_get_wbio(s);
1344 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1345 if (r != NULL)
1346 BIO_get_fd(r, &ret);
1347 return ret;
1348}
1349
1350#ifndef OPENSSL_NO_SOCK
1351int SSL_set_fd(SSL *s, int fd)
1352{
1353 int ret = 0;
1354 BIO *bio = NULL;
1355
1356 bio = BIO_new(BIO_s_socket());
1357
1358 if (bio == NULL) {
1359 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1360 goto err;
1361 }
1362 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1363 SSL_set_bio(s, bio, bio);
1364 ret = 1;
1365 err:
1366 return ret;
1367}
1368
1369int SSL_set_wfd(SSL *s, int fd)
1370{
1371 BIO *rbio = SSL_get_rbio(s);
1372
1373 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1374 || (int)BIO_get_fd(rbio, NULL) != fd) {
1375 BIO *bio = BIO_new(BIO_s_socket());
1376
1377 if (bio == NULL) {
1378 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1379 return 0;
1380 }
1381 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1382 SSL_set0_wbio(s, bio);
1383 } else {
1384 BIO_up_ref(rbio);
1385 SSL_set0_wbio(s, rbio);
1386 }
1387 return 1;
1388}
1389
1390int SSL_set_rfd(SSL *s, int fd)
1391{
1392 BIO *wbio = SSL_get_wbio(s);
1393
1394 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1395 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1396 BIO *bio = BIO_new(BIO_s_socket());
1397
1398 if (bio == NULL) {
1399 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1400 return 0;
1401 }
1402 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1403 SSL_set0_rbio(s, bio);
1404 } else {
1405 BIO_up_ref(wbio);
1406 SSL_set0_rbio(s, wbio);
1407 }
1408
1409 return 1;
1410}
1411#endif
1412
1413/* return length of latest Finished message we sent, copy to 'buf' */
1414size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1415{
1416 size_t ret = 0;
1417
1418 if (s->s3 != NULL) {
1419 ret = s->s3->tmp.finish_md_len;
1420 if (count > ret)
1421 count = ret;
1422 memcpy(buf, s->s3->tmp.finish_md, count);
1423 }
1424 return ret;
1425}
1426
1427/* return length of latest Finished message we expected, copy to 'buf' */
1428size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1429{
1430 size_t ret = 0;
1431
1432 if (s->s3 != NULL) {
1433 ret = s->s3->tmp.peer_finish_md_len;
1434 if (count > ret)
1435 count = ret;
1436 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1437 }
1438 return ret;
1439}
1440
1441int SSL_get_verify_mode(const SSL *s)
1442{
1443 return s->verify_mode;
1444}
1445
1446int SSL_get_verify_depth(const SSL *s)
1447{
1448 return X509_VERIFY_PARAM_get_depth(s->param);
1449}
1450
1451int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1452 return s->verify_callback;
1453}
1454
1455int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1456{
1457 return ctx->verify_mode;
1458}
1459
1460int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1461{
1462 return X509_VERIFY_PARAM_get_depth(ctx->param);
1463}
1464
1465int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1466 return ctx->default_verify_callback;
1467}
1468
1469void SSL_set_verify(SSL *s, int mode,
1470 int (*callback) (int ok, X509_STORE_CTX *ctx))
1471{
1472 s->verify_mode = mode;
1473 if (callback != NULL)
1474 s->verify_callback = callback;
1475}
1476
1477void SSL_set_verify_depth(SSL *s, int depth)
1478{
1479 X509_VERIFY_PARAM_set_depth(s->param, depth);
1480}
1481
1482void SSL_set_read_ahead(SSL *s, int yes)
1483{
1484 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1485}
1486
1487int SSL_get_read_ahead(const SSL *s)
1488{
1489 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1490}
1491
1492int SSL_pending(const SSL *s)
1493{
1494 size_t pending = s->method->ssl_pending(s);
1495
1496 /*
1497 * SSL_pending cannot work properly if read-ahead is enabled
1498 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1499 * impossible to fix since SSL_pending cannot report errors that may be
1500 * observed while scanning the new data. (Note that SSL_pending() is
1501 * often used as a boolean value, so we'd better not return -1.)
1502 *
1503 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1504 * we just return INT_MAX.
1505 */
1506 return pending < INT_MAX ? (int)pending : INT_MAX;
1507}
1508
1509int SSL_has_pending(const SSL *s)
1510{
1511 /*
1512 * Similar to SSL_pending() but returns a 1 to indicate that we have
1513 * unprocessed data available or 0 otherwise (as opposed to the number of
1514 * bytes available). Unlike SSL_pending() this will take into account
1515 * read_ahead data. A 1 return simply indicates that we have unprocessed
1516 * data. That data may not result in any application data, or we may fail
1517 * to parse the records for some reason.
1518 */
1519 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1520 return 1;
1521
1522 return RECORD_LAYER_read_pending(&s->rlayer);
1523}
1524
1525X509 *SSL_get_peer_certificate(const SSL *s)
1526{
1527 X509 *r;
1528
1529 if ((s == NULL) || (s->session == NULL))
1530 r = NULL;
1531 else
1532 r = s->session->peer;
1533
1534 if (r == NULL)
1535 return r;
1536
1537 X509_up_ref(r);
1538
1539 return r;
1540}
1541
1542STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1543{
1544 STACK_OF(X509) *r;
1545
1546 if ((s == NULL) || (s->session == NULL))
1547 r = NULL;
1548 else
1549 r = s->session->peer_chain;
1550
1551 /*
1552 * If we are a client, cert_chain includes the peer's own certificate; if
1553 * we are a server, it does not.
1554 */
1555
1556 return r;
1557}
1558
1559/*
1560 * Now in theory, since the calling process own 't' it should be safe to
1561 * modify. We need to be able to read f without being hassled
1562 */
1563int SSL_copy_session_id(SSL *t, const SSL *f)
1564{
1565 int i;
1566 /* Do we need to to SSL locking? */
1567 if (!SSL_set_session(t, SSL_get_session(f))) {
1568 return 0;
1569 }
1570
1571 /*
1572 * what if we are setup for one protocol version but want to talk another
1573 */
1574 if (t->method != f->method) {
1575 t->method->ssl_free(t);
1576 t->method = f->method;
1577 if (t->method->ssl_new(t) == 0)
1578 return 0;
1579 }
1580
1581 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1582 ssl_cert_free(t->cert);
1583 t->cert = f->cert;
1584 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1585 return 0;
1586 }
1587
1588 return 1;
1589}
1590
1591/* Fix this so it checks all the valid key/cert options */
1592int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1593{
1594 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1595 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1596 return 0;
1597 }
1598 if (ctx->cert->key->privatekey == NULL) {
1599 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1600 return 0;
1601 }
1602 return X509_check_private_key
1603 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1604}
1605
1606/* Fix this function so that it takes an optional type parameter */
1607int SSL_check_private_key(const SSL *ssl)
1608{
1609 if (ssl == NULL) {
1610 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1611 return 0;
1612 }
1613 if (ssl->cert->key->x509 == NULL) {
1614 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1615 return 0;
1616 }
1617 if (ssl->cert->key->privatekey == NULL) {
1618 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1619 return 0;
1620 }
1621 return X509_check_private_key(ssl->cert->key->x509,
1622 ssl->cert->key->privatekey);
1623}
1624
1625int SSL_waiting_for_async(SSL *s)
1626{
1627 if (s->job)
1628 return 1;
1629
1630 return 0;
1631}
1632
1633int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1634{
1635 ASYNC_WAIT_CTX *ctx = s->waitctx;
1636
1637 if (ctx == NULL)
1638 return 0;
1639 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1640}
1641
1642int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1643 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1644{
1645 ASYNC_WAIT_CTX *ctx = s->waitctx;
1646
1647 if (ctx == NULL)
1648 return 0;
1649 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1650 numdelfds);
1651}
1652
1653int SSL_accept(SSL *s)
1654{
1655 if (s->handshake_func == NULL) {
1656 /* Not properly initialized yet */
1657 SSL_set_accept_state(s);
1658 }
1659
1660 return SSL_do_handshake(s);
1661}
1662
1663int SSL_connect(SSL *s)
1664{
1665 if (s->handshake_func == NULL) {
1666 /* Not properly initialized yet */
1667 SSL_set_connect_state(s);
1668 }
1669
1670 return SSL_do_handshake(s);
1671}
1672
1673long SSL_get_default_timeout(const SSL *s)
1674{
1675 return s->method->get_timeout();
1676}
1677
1678static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1679 int (*func) (void *))
1680{
1681 int ret;
1682 if (s->waitctx == NULL) {
1683 s->waitctx = ASYNC_WAIT_CTX_new();
1684 if (s->waitctx == NULL)
1685 return -1;
1686 }
1687 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1688 sizeof(struct ssl_async_args))) {
1689 case ASYNC_ERR:
1690 s->rwstate = SSL_NOTHING;
1691 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1692 return -1;
1693 case ASYNC_PAUSE:
1694 s->rwstate = SSL_ASYNC_PAUSED;
1695 return -1;
1696 case ASYNC_NO_JOBS:
1697 s->rwstate = SSL_ASYNC_NO_JOBS;
1698 return -1;
1699 case ASYNC_FINISH:
1700 s->job = NULL;
1701 return ret;
1702 default:
1703 s->rwstate = SSL_NOTHING;
1704 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1705 /* Shouldn't happen */
1706 return -1;
1707 }
1708}
1709
1710static int ssl_io_intern(void *vargs)
1711{
1712 struct ssl_async_args *args;
1713 SSL *s;
1714 void *buf;
1715 size_t num;
1716
1717 args = (struct ssl_async_args *)vargs;
1718 s = args->s;
1719 buf = args->buf;
1720 num = args->num;
1721 switch (args->type) {
1722 case READFUNC:
1723 return args->f.func_read(s, buf, num, &s->asyncrw);
1724 case WRITEFUNC:
1725 return args->f.func_write(s, buf, num, &s->asyncrw);
1726 case OTHERFUNC:
1727 return args->f.func_other(s);
1728 }
1729 return -1;
1730}
1731
1732int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1733{
1734 if (s->handshake_func == NULL) {
1735 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1736 return -1;
1737 }
1738
1739 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1740 s->rwstate = SSL_NOTHING;
1741 return 0;
1742 }
1743
1744 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1745 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1746 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1747 return 0;
1748 }
1749 /*
1750 * If we are a client and haven't received the ServerHello etc then we
1751 * better do that
1752 */
1753 ossl_statem_check_finish_init(s, 0);
1754
1755 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1756 struct ssl_async_args args;
1757 int ret;
1758
1759 args.s = s;
1760 args.buf = buf;
1761 args.num = num;
1762 args.type = READFUNC;
1763 args.f.func_read = s->method->ssl_read;
1764
1765 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1766 *readbytes = s->asyncrw;
1767 return ret;
1768 } else {
1769 return s->method->ssl_read(s, buf, num, readbytes);
1770 }
1771}
1772
1773int SSL_read(SSL *s, void *buf, int num)
1774{
1775 int ret;
1776 size_t readbytes;
1777
1778 if (num < 0) {
1779 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1780 return -1;
1781 }
1782
1783 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1784
1785 /*
1786 * The cast is safe here because ret should be <= INT_MAX because num is
1787 * <= INT_MAX
1788 */
1789 if (ret > 0)
1790 ret = (int)readbytes;
1791
1792 return ret;
1793}
1794
1795int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1796{
1797 int ret = ssl_read_internal(s, buf, num, readbytes);
1798
1799 if (ret < 0)
1800 ret = 0;
1801 return ret;
1802}
1803
1804int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1805{
1806 int ret;
1807
1808 if (!s->server) {
1809 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1810 return SSL_READ_EARLY_DATA_ERROR;
1811 }
1812
1813 switch (s->early_data_state) {
1814 case SSL_EARLY_DATA_NONE:
1815 if (!SSL_in_before(s)) {
1816 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1817 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1818 return SSL_READ_EARLY_DATA_ERROR;
1819 }
1820 /* fall through */
1821
1822 case SSL_EARLY_DATA_ACCEPT_RETRY:
1823 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1824 ret = SSL_accept(s);
1825 if (ret <= 0) {
1826 /* NBIO or error */
1827 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1828 return SSL_READ_EARLY_DATA_ERROR;
1829 }
1830 /* fall through */
1831
1832 case SSL_EARLY_DATA_READ_RETRY:
1833 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1834 s->early_data_state = SSL_EARLY_DATA_READING;
1835 ret = SSL_read_ex(s, buf, num, readbytes);
1836 /*
1837 * State machine will update early_data_state to
1838 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1839 * message
1840 */
1841 if (ret > 0 || (ret <= 0 && s->early_data_state
1842 != SSL_EARLY_DATA_FINISHED_READING)) {
1843 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1844 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1845 : SSL_READ_EARLY_DATA_ERROR;
1846 }
1847 } else {
1848 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1849 }
1850 *readbytes = 0;
1851 return SSL_READ_EARLY_DATA_FINISH;
1852
1853 default:
1854 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1855 return SSL_READ_EARLY_DATA_ERROR;
1856 }
1857}
1858
1859int SSL_get_early_data_status(const SSL *s)
1860{
1861 return s->ext.early_data;
1862}
1863
1864static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1865{
1866 if (s->handshake_func == NULL) {
1867 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1868 return -1;
1869 }
1870
1871 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1872 return 0;
1873 }
1874 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1875 struct ssl_async_args args;
1876 int ret;
1877
1878 args.s = s;
1879 args.buf = buf;
1880 args.num = num;
1881 args.type = READFUNC;
1882 args.f.func_read = s->method->ssl_peek;
1883
1884 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1885 *readbytes = s->asyncrw;
1886 return ret;
1887 } else {
1888 return s->method->ssl_peek(s, buf, num, readbytes);
1889 }
1890}
1891
1892int SSL_peek(SSL *s, void *buf, int num)
1893{
1894 int ret;
1895 size_t readbytes;
1896
1897 if (num < 0) {
1898 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1899 return -1;
1900 }
1901
1902 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1903
1904 /*
1905 * The cast is safe here because ret should be <= INT_MAX because num is
1906 * <= INT_MAX
1907 */
1908 if (ret > 0)
1909 ret = (int)readbytes;
1910
1911 return ret;
1912}
1913
1914
1915int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1916{
1917 int ret = ssl_peek_internal(s, buf, num, readbytes);
1918
1919 if (ret < 0)
1920 ret = 0;
1921 return ret;
1922}
1923
1924int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1925{
1926 if (s->handshake_func == NULL) {
1927 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1928 return -1;
1929 }
1930
1931 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1932 s->rwstate = SSL_NOTHING;
1933 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1934 return -1;
1935 }
1936
1937 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1938 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1939 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1940 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1941 return 0;
1942 }
1943 /* If we are a client and haven't sent the Finished we better do that */
1944 ossl_statem_check_finish_init(s, 1);
1945
1946 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1947 int ret;
1948 struct ssl_async_args args;
1949
1950 args.s = s;
1951 args.buf = (void *)buf;
1952 args.num = num;
1953 args.type = WRITEFUNC;
1954 args.f.func_write = s->method->ssl_write;
1955
1956 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1957 *written = s->asyncrw;
1958 return ret;
1959 } else {
1960 return s->method->ssl_write(s, buf, num, written);
1961 }
1962}
1963
1964int SSL_write(SSL *s, const void *buf, int num)
1965{
1966 int ret;
1967 size_t written;
1968
1969 if (num < 0) {
1970 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1971 return -1;
1972 }
1973
1974 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1975
1976 /*
1977 * The cast is safe here because ret should be <= INT_MAX because num is
1978 * <= INT_MAX
1979 */
1980 if (ret > 0)
1981 ret = (int)written;
1982
1983 return ret;
1984}
1985
1986int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1987{
1988 int ret = ssl_write_internal(s, buf, num, written);
1989
1990 if (ret < 0)
1991 ret = 0;
1992 return ret;
1993}
1994
1995int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1996{
1997 int ret, early_data_state;
1998 size_t writtmp;
1999 uint32_t partialwrite;
2000
2001 switch (s->early_data_state) {
2002 case SSL_EARLY_DATA_NONE:
2003 if (s->server
2004 || !SSL_in_before(s)
2005 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2006 && (s->psk_use_session_cb == NULL))) {
2007 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2008 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2009 return 0;
2010 }
2011 /* fall through */
2012
2013 case SSL_EARLY_DATA_CONNECT_RETRY:
2014 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2015 ret = SSL_connect(s);
2016 if (ret <= 0) {
2017 /* NBIO or error */
2018 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2019 return 0;
2020 }
2021 /* fall through */
2022
2023 case SSL_EARLY_DATA_WRITE_RETRY:
2024 s->early_data_state = SSL_EARLY_DATA_WRITING;
2025 /*
2026 * We disable partial write for early data because we don't keep track
2027 * of how many bytes we've written between the SSL_write_ex() call and
2028 * the flush if the flush needs to be retried)
2029 */
2030 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2031 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2032 ret = SSL_write_ex(s, buf, num, &writtmp);
2033 s->mode |= partialwrite;
2034 if (!ret) {
2035 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2036 return ret;
2037 }
2038 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2039 /* fall through */
2040
2041 case SSL_EARLY_DATA_WRITE_FLUSH:
2042 /* The buffering BIO is still in place so we need to flush it */
2043 if (statem_flush(s) != 1)
2044 return 0;
2045 *written = num;
2046 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2047 return 1;
2048
2049 case SSL_EARLY_DATA_FINISHED_READING:
2050 case SSL_EARLY_DATA_READ_RETRY:
2051 early_data_state = s->early_data_state;
2052 /* We are a server writing to an unauthenticated client */
2053 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2054 ret = SSL_write_ex(s, buf, num, written);
2055 /* The buffering BIO is still in place */
2056 if (ret)
2057 (void)BIO_flush(s->wbio);
2058 s->early_data_state = early_data_state;
2059 return ret;
2060
2061 default:
2062 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2063 return 0;
2064 }
2065}
2066
2067int SSL_shutdown(SSL *s)
2068{
2069 /*
2070 * Note that this function behaves differently from what one might
2071 * expect. Return values are 0 for no success (yet), 1 for success; but
2072 * calling it once is usually not enough, even if blocking I/O is used
2073 * (see ssl3_shutdown).
2074 */
2075
2076 if (s->handshake_func == NULL) {
2077 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2078 return -1;
2079 }
2080
2081 if (!SSL_in_init(s)) {
2082 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2083 struct ssl_async_args args;
2084
2085 args.s = s;
2086 args.type = OTHERFUNC;
2087 args.f.func_other = s->method->ssl_shutdown;
2088
2089 return ssl_start_async_job(s, &args, ssl_io_intern);
2090 } else {
2091 return s->method->ssl_shutdown(s);
2092 }
2093 } else {
2094 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2095 return -1;
2096 }
2097}
2098
2099int SSL_key_update(SSL *s, int updatetype)
2100{
2101 /*
2102 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2103 * negotiated, and that it is appropriate to call SSL_key_update() instead
2104 * of SSL_renegotiate().
2105 */
2106 if (!SSL_IS_TLS13(s)) {
2107 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2108 return 0;
2109 }
2110
2111 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2112 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2113 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2114 return 0;
2115 }
2116
2117 if (!SSL_is_init_finished(s)) {
2118 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2119 return 0;
2120 }
2121
2122 ossl_statem_set_in_init(s, 1);
2123 s->key_update = updatetype;
2124 return 1;
2125}
2126
2127int SSL_get_key_update_type(const SSL *s)
2128{
2129 return s->key_update;
2130}
2131
2132int SSL_renegotiate(SSL *s)
2133{
2134 if (SSL_IS_TLS13(s)) {
2135 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2136 return 0;
2137 }
2138
2139 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2140 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2141 return 0;
2142 }
2143
2144 s->renegotiate = 1;
2145 s->new_session = 1;
2146
2147 return s->method->ssl_renegotiate(s);
2148}
2149
2150int SSL_renegotiate_abbreviated(SSL *s)
2151{
2152 if (SSL_IS_TLS13(s)) {
2153 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2154 return 0;
2155 }
2156
2157 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2158 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2159 return 0;
2160 }
2161
2162 s->renegotiate = 1;
2163 s->new_session = 0;
2164
2165 return s->method->ssl_renegotiate(s);
2166}
2167
2168int SSL_renegotiate_pending(const SSL *s)
2169{
2170 /*
2171 * becomes true when negotiation is requested; false again once a
2172 * handshake has finished
2173 */
2174 return (s->renegotiate != 0);
2175}
2176
2177long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2178{
2179 long l;
2180
2181 switch (cmd) {
2182 case SSL_CTRL_GET_READ_AHEAD:
2183 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2184 case SSL_CTRL_SET_READ_AHEAD:
2185 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2186 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2187 return l;
2188
2189 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2190 s->msg_callback_arg = parg;
2191 return 1;
2192
2193 case SSL_CTRL_MODE:
2194 return (s->mode |= larg);
2195 case SSL_CTRL_CLEAR_MODE:
2196 return (s->mode &= ~larg);
2197 case SSL_CTRL_GET_MAX_CERT_LIST:
2198 return (long)s->max_cert_list;
2199 case SSL_CTRL_SET_MAX_CERT_LIST:
2200 if (larg < 0)
2201 return 0;
2202 l = (long)s->max_cert_list;
2203 s->max_cert_list = (size_t)larg;
2204 return l;
2205 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2206 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2207 return 0;
2208 s->max_send_fragment = larg;
2209 if (s->max_send_fragment < s->split_send_fragment)
2210 s->split_send_fragment = s->max_send_fragment;
2211 return 1;
2212 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2213 if ((size_t)larg > s->max_send_fragment || larg == 0)
2214 return 0;
2215 s->split_send_fragment = larg;
2216 return 1;
2217 case SSL_CTRL_SET_MAX_PIPELINES:
2218 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2219 return 0;
2220 s->max_pipelines = larg;
2221 if (larg > 1)
2222 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2223 return 1;
2224 case SSL_CTRL_GET_RI_SUPPORT:
2225 if (s->s3)
2226 return s->s3->send_connection_binding;
2227 else
2228 return 0;
2229 case SSL_CTRL_CERT_FLAGS:
2230 return (s->cert->cert_flags |= larg);
2231 case SSL_CTRL_CLEAR_CERT_FLAGS:
2232 return (s->cert->cert_flags &= ~larg);
2233
2234 case SSL_CTRL_GET_RAW_CIPHERLIST:
2235 if (parg) {
2236 if (s->s3->tmp.ciphers_raw == NULL)
2237 return 0;
2238 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2239 return (int)s->s3->tmp.ciphers_rawlen;
2240 } else {
2241 return TLS_CIPHER_LEN;
2242 }
2243 case SSL_CTRL_GET_EXTMS_SUPPORT:
2244 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2245 return -1;
2246 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2247 return 1;
2248 else
2249 return 0;
2250 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2251 return ssl_check_allowed_versions(larg, s->max_proto_version)
2252 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2253 &s->min_proto_version);
2254 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2255 return s->min_proto_version;
2256 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2257 return ssl_check_allowed_versions(s->min_proto_version, larg)
2258 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2259 &s->max_proto_version);
2260 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2261 return s->max_proto_version;
2262 default:
2263 return s->method->ssl_ctrl(s, cmd, larg, parg);
2264 }
2265}
2266
2267long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2268{
2269 switch (cmd) {
2270 case SSL_CTRL_SET_MSG_CALLBACK:
2271 s->msg_callback = (void (*)
2272 (int write_p, int version, int content_type,
2273 const void *buf, size_t len, SSL *ssl,
2274 void *arg))(fp);
2275 return 1;
2276
2277 default:
2278 return s->method->ssl_callback_ctrl(s, cmd, fp);
2279 }
2280}
2281
2282LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2283{
2284 return ctx->sessions;
2285}
2286
2287long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2288{
2289 long l;
2290 /* For some cases with ctx == NULL perform syntax checks */
2291 if (ctx == NULL) {
2292 switch (cmd) {
2293#ifndef OPENSSL_NO_EC
2294 case SSL_CTRL_SET_GROUPS_LIST:
2295 return tls1_set_groups_list(NULL, NULL, parg);
2296#endif
2297 case SSL_CTRL_SET_SIGALGS_LIST:
2298 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2299 return tls1_set_sigalgs_list(NULL, parg, 0);
2300 default:
2301 return 0;
2302 }
2303 }
2304
2305 switch (cmd) {
2306 case SSL_CTRL_GET_READ_AHEAD:
2307 return ctx->read_ahead;
2308 case SSL_CTRL_SET_READ_AHEAD:
2309 l = ctx->read_ahead;
2310 ctx->read_ahead = larg;
2311 return l;
2312
2313 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2314 ctx->msg_callback_arg = parg;
2315 return 1;
2316
2317 case SSL_CTRL_GET_MAX_CERT_LIST:
2318 return (long)ctx->max_cert_list;
2319 case SSL_CTRL_SET_MAX_CERT_LIST:
2320 if (larg < 0)
2321 return 0;
2322 l = (long)ctx->max_cert_list;
2323 ctx->max_cert_list = (size_t)larg;
2324 return l;
2325
2326 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2327 if (larg < 0)
2328 return 0;
2329 l = (long)ctx->session_cache_size;
2330 ctx->session_cache_size = (size_t)larg;
2331 return l;
2332 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2333 return (long)ctx->session_cache_size;
2334 case SSL_CTRL_SET_SESS_CACHE_MODE:
2335 l = ctx->session_cache_mode;
2336 ctx->session_cache_mode = larg;
2337 return l;
2338 case SSL_CTRL_GET_SESS_CACHE_MODE:
2339 return ctx->session_cache_mode;
2340
2341 case SSL_CTRL_SESS_NUMBER:
2342 return lh_SSL_SESSION_num_items(ctx->sessions);
2343 case SSL_CTRL_SESS_CONNECT:
2344 return tsan_load(&ctx->stats.sess_connect);
2345 case SSL_CTRL_SESS_CONNECT_GOOD:
2346 return tsan_load(&ctx->stats.sess_connect_good);
2347 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2348 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2349 case SSL_CTRL_SESS_ACCEPT:
2350 return tsan_load(&ctx->stats.sess_accept);
2351 case SSL_CTRL_SESS_ACCEPT_GOOD:
2352 return tsan_load(&ctx->stats.sess_accept_good);
2353 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2354 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2355 case SSL_CTRL_SESS_HIT:
2356 return tsan_load(&ctx->stats.sess_hit);
2357 case SSL_CTRL_SESS_CB_HIT:
2358 return tsan_load(&ctx->stats.sess_cb_hit);
2359 case SSL_CTRL_SESS_MISSES:
2360 return tsan_load(&ctx->stats.sess_miss);
2361 case SSL_CTRL_SESS_TIMEOUTS:
2362 return tsan_load(&ctx->stats.sess_timeout);
2363 case SSL_CTRL_SESS_CACHE_FULL:
2364 return tsan_load(&ctx->stats.sess_cache_full);
2365 case SSL_CTRL_MODE:
2366 return (ctx->mode |= larg);
2367 case SSL_CTRL_CLEAR_MODE:
2368 return (ctx->mode &= ~larg);
2369 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2370 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2371 return 0;
2372 ctx->max_send_fragment = larg;
2373 if (ctx->max_send_fragment < ctx->split_send_fragment)
2374 ctx->split_send_fragment = ctx->max_send_fragment;
2375 return 1;
2376 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2377 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2378 return 0;
2379 ctx->split_send_fragment = larg;
2380 return 1;
2381 case SSL_CTRL_SET_MAX_PIPELINES:
2382 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2383 return 0;
2384 ctx->max_pipelines = larg;
2385 return 1;
2386 case SSL_CTRL_CERT_FLAGS:
2387 return (ctx->cert->cert_flags |= larg);
2388 case SSL_CTRL_CLEAR_CERT_FLAGS:
2389 return (ctx->cert->cert_flags &= ~larg);
2390 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2391 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2392 && ssl_set_version_bound(ctx->method->version, (int)larg,
2393 &ctx->min_proto_version);
2394 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2395 return ctx->min_proto_version;
2396 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2397 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2398 && ssl_set_version_bound(ctx->method->version, (int)larg,
2399 &ctx->max_proto_version);
2400 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2401 return ctx->max_proto_version;
2402 default:
2403 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2404 }
2405}
2406
2407long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2408{
2409 switch (cmd) {
2410 case SSL_CTRL_SET_MSG_CALLBACK:
2411 ctx->msg_callback = (void (*)
2412 (int write_p, int version, int content_type,
2413 const void *buf, size_t len, SSL *ssl,
2414 void *arg))(fp);
2415 return 1;
2416
2417 default:
2418 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2419 }
2420}
2421
2422int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2423{
2424 if (a->id > b->id)
2425 return 1;
2426 if (a->id < b->id)
2427 return -1;
2428 return 0;
2429}
2430
2431int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2432 const SSL_CIPHER *const *bp)
2433{
2434 if ((*ap)->id > (*bp)->id)
2435 return 1;
2436 if ((*ap)->id < (*bp)->id)
2437 return -1;
2438 return 0;
2439}
2440
2441/** return a STACK of the ciphers available for the SSL and in order of
2442 * preference */
2443STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2444{
2445 if (s != NULL) {
2446 if (s->cipher_list != NULL) {
2447 return s->cipher_list;
2448 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2449 return s->ctx->cipher_list;
2450 }
2451 }
2452 return NULL;
2453}
2454
2455STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2456{
2457 if ((s == NULL) || !s->server)
2458 return NULL;
2459 return s->peer_ciphers;
2460}
2461
2462STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2463{
2464 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2465 int i;
2466
2467 ciphers = SSL_get_ciphers(s);
2468 if (!ciphers)
2469 return NULL;
2470 if (!ssl_set_client_disabled(s))
2471 return NULL;
2472 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2473 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2474 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2475 if (!sk)
2476 sk = sk_SSL_CIPHER_new_null();
2477 if (!sk)
2478 return NULL;
2479 if (!sk_SSL_CIPHER_push(sk, c)) {
2480 sk_SSL_CIPHER_free(sk);
2481 return NULL;
2482 }
2483 }
2484 }
2485 return sk;
2486}
2487
2488/** return a STACK of the ciphers available for the SSL and in order of
2489 * algorithm id */
2490STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2491{
2492 if (s != NULL) {
2493 if (s->cipher_list_by_id != NULL) {
2494 return s->cipher_list_by_id;
2495 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2496 return s->ctx->cipher_list_by_id;
2497 }
2498 }
2499 return NULL;
2500}
2501
2502/** The old interface to get the same thing as SSL_get_ciphers() */
2503const char *SSL_get_cipher_list(const SSL *s, int n)
2504{
2505 const SSL_CIPHER *c;
2506 STACK_OF(SSL_CIPHER) *sk;
2507
2508 if (s == NULL)
2509 return NULL;
2510 sk = SSL_get_ciphers(s);
2511 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2512 return NULL;
2513 c = sk_SSL_CIPHER_value(sk, n);
2514 if (c == NULL)
2515 return NULL;
2516 return c->name;
2517}
2518
2519/** return a STACK of the ciphers available for the SSL_CTX and in order of
2520 * preference */
2521STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2522{
2523 if (ctx != NULL)
2524 return ctx->cipher_list;
2525 return NULL;
2526}
2527
2528/*
2529 * Distinguish between ciphers controlled by set_ciphersuite() and
2530 * set_cipher_list() when counting.
2531 */
2532static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2533{
2534 int i, num = 0;
2535 const SSL_CIPHER *c;
2536
2537 if (sk == NULL)
2538 return 0;
2539 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2540 c = sk_SSL_CIPHER_value(sk, i);
2541 if (c->min_tls >= TLS1_3_VERSION)
2542 continue;
2543 num++;
2544 }
2545 return num;
2546}
2547
2548/** specify the ciphers to be used by default by the SSL_CTX */
2549int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2550{
2551 STACK_OF(SSL_CIPHER) *sk;
2552
2553 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2554 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2555 ctx->cert);
2556 /*
2557 * ssl_create_cipher_list may return an empty stack if it was unable to
2558 * find a cipher matching the given rule string (for example if the rule
2559 * string specifies a cipher which has been disabled). This is not an
2560 * error as far as ssl_create_cipher_list is concerned, and hence
2561 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2562 */
2563 if (sk == NULL)
2564 return 0;
2565 else if (cipher_list_tls12_num(sk) == 0) {
2566 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2567 return 0;
2568 }
2569 return 1;
2570}
2571
2572/** specify the ciphers to be used by the SSL */
2573int SSL_set_cipher_list(SSL *s, const char *str)
2574{
2575 STACK_OF(SSL_CIPHER) *sk;
2576
2577 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2578 &s->cipher_list, &s->cipher_list_by_id, str,
2579 s->cert);
2580 /* see comment in SSL_CTX_set_cipher_list */
2581 if (sk == NULL)
2582 return 0;
2583 else if (cipher_list_tls12_num(sk) == 0) {
2584 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2585 return 0;
2586 }
2587 return 1;
2588}
2589
2590char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2591{
2592 char *p;
2593 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2594 const SSL_CIPHER *c;
2595 int i;
2596
2597 if (!s->server
2598 || s->peer_ciphers == NULL
2599 || size < 2)
2600 return NULL;
2601
2602 p = buf;
2603 clntsk = s->peer_ciphers;
2604 srvrsk = SSL_get_ciphers(s);
2605 if (clntsk == NULL || srvrsk == NULL)
2606 return NULL;
2607
2608 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2609 return NULL;
2610
2611 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2612 int n;
2613
2614 c = sk_SSL_CIPHER_value(clntsk, i);
2615 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2616 continue;
2617
2618 n = strlen(c->name);
2619 if (n + 1 > size) {
2620 if (p != buf)
2621 --p;
2622 *p = '\0';
2623 return buf;
2624 }
2625 strcpy(p, c->name);
2626 p += n;
2627 *(p++) = ':';
2628 size -= n + 1;
2629 }
2630 p[-1] = '\0';
2631 return buf;
2632}
2633
2634/**
2635 * Return the requested servername (SNI) value. Note that the behaviour varies
2636 * depending on:
2637 * - whether this is called by the client or the server,
2638 * - if we are before or during/after the handshake,
2639 * - if a resumption or normal handshake is being attempted/has occurred
2640 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2641 *
2642 * Note that only the host_name type is defined (RFC 3546).
2643 */
2644const char *SSL_get_servername(const SSL *s, const int type)
2645{
2646 /*
2647 * If we don't know if we are the client or the server yet then we assume
2648 * client.
2649 */
2650 int server = s->handshake_func == NULL ? 0 : s->server;
2651 if (type != TLSEXT_NAMETYPE_host_name)
2652 return NULL;
2653
2654 if (server) {
2655 /**
2656 * Server side
2657 * In TLSv1.3 on the server SNI is not associated with the session
2658 * but in TLSv1.2 or below it is.
2659 *
2660 * Before the handshake:
2661 * - return NULL
2662 *
2663 * During/after the handshake (TLSv1.2 or below resumption occurred):
2664 * - If a servername was accepted by the server in the original
2665 * handshake then it will return that servername, or NULL otherwise.
2666 *
2667 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2668 * - The function will return the servername requested by the client in
2669 * this handshake or NULL if none was requested.
2670 */
2671 if (s->hit && !SSL_IS_TLS13(s))
2672 return s->session->ext.hostname;
2673 } else {
2674 /**
2675 * Client side
2676 *
2677 * Before the handshake:
2678 * - If a servername has been set via a call to
2679 * SSL_set_tlsext_host_name() then it will return that servername
2680 * - If one has not been set, but a TLSv1.2 resumption is being
2681 * attempted and the session from the original handshake had a
2682 * servername accepted by the server then it will return that
2683 * servername
2684 * - Otherwise it returns NULL
2685 *
2686 * During/after the handshake (TLSv1.2 or below resumption occurred):
2687 * - If the session from the original handshake had a servername accepted
2688 * by the server then it will return that servername.
2689 * - Otherwise it returns the servername set via
2690 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2691 *
2692 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2693 * - It will return the servername set via SSL_set_tlsext_host_name()
2694 * (or NULL if it was not called).
2695 */
2696 if (SSL_in_before(s)) {
2697 if (s->ext.hostname == NULL
2698 && s->session != NULL
2699 && s->session->ssl_version != TLS1_3_VERSION)
2700 return s->session->ext.hostname;
2701 } else {
2702 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2703 return s->session->ext.hostname;
2704 }
2705 }
2706
2707 return s->ext.hostname;
2708}
2709
2710int SSL_get_servername_type(const SSL *s)
2711{
2712 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2713 return TLSEXT_NAMETYPE_host_name;
2714 return -1;
2715}
2716
2717/*
2718 * SSL_select_next_proto implements the standard protocol selection. It is
2719 * expected that this function is called from the callback set by
2720 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2721 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2722 * not included in the length. A byte string of length 0 is invalid. No byte
2723 * string may be truncated. The current, but experimental algorithm for
2724 * selecting the protocol is: 1) If the server doesn't support NPN then this
2725 * is indicated to the callback. In this case, the client application has to
2726 * abort the connection or have a default application level protocol. 2) If
2727 * the server supports NPN, but advertises an empty list then the client
2728 * selects the first protocol in its list, but indicates via the API that this
2729 * fallback case was enacted. 3) Otherwise, the client finds the first
2730 * protocol in the server's list that it supports and selects this protocol.
2731 * This is because it's assumed that the server has better information about
2732 * which protocol a client should use. 4) If the client doesn't support any
2733 * of the server's advertised protocols, then this is treated the same as
2734 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2735 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2736 */
2737int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2738 const unsigned char *server,
2739 unsigned int server_len,
2740 const unsigned char *client, unsigned int client_len)
2741{
2742 unsigned int i, j;
2743 const unsigned char *result;
2744 int status = OPENSSL_NPN_UNSUPPORTED;
2745
2746 /*
2747 * For each protocol in server preference order, see if we support it.
2748 */
2749 for (i = 0; i < server_len;) {
2750 for (j = 0; j < client_len;) {
2751 if (server[i] == client[j] &&
2752 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2753 /* We found a match */
2754 result = &server[i];
2755 status = OPENSSL_NPN_NEGOTIATED;
2756 goto found;
2757 }
2758 j += client[j];
2759 j++;
2760 }
2761 i += server[i];
2762 i++;
2763 }
2764
2765 /* There's no overlap between our protocols and the server's list. */
2766 result = client;
2767 status = OPENSSL_NPN_NO_OVERLAP;
2768
2769 found:
2770 *out = (unsigned char *)result + 1;
2771 *outlen = result[0];
2772 return status;
2773}
2774
2775#ifndef OPENSSL_NO_NEXTPROTONEG
2776/*
2777 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2778 * client's requested protocol for this connection and returns 0. If the
2779 * client didn't request any protocol, then *data is set to NULL. Note that
2780 * the client can request any protocol it chooses. The value returned from
2781 * this function need not be a member of the list of supported protocols
2782 * provided by the callback.
2783 */
2784void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2785 unsigned *len)
2786{
2787 *data = s->ext.npn;
2788 if (!*data) {
2789 *len = 0;
2790 } else {
2791 *len = (unsigned int)s->ext.npn_len;
2792 }
2793}
2794
2795/*
2796 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2797 * a TLS server needs a list of supported protocols for Next Protocol
2798 * Negotiation. The returned list must be in wire format. The list is
2799 * returned by setting |out| to point to it and |outlen| to its length. This
2800 * memory will not be modified, but one should assume that the SSL* keeps a
2801 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2802 * wishes to advertise. Otherwise, no such extension will be included in the
2803 * ServerHello.
2804 */
2805void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2806 SSL_CTX_npn_advertised_cb_func cb,
2807 void *arg)
2808{
2809 ctx->ext.npn_advertised_cb = cb;
2810 ctx->ext.npn_advertised_cb_arg = arg;
2811}
2812
2813/*
2814 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2815 * client needs to select a protocol from the server's provided list. |out|
2816 * must be set to point to the selected protocol (which may be within |in|).
2817 * The length of the protocol name must be written into |outlen|. The
2818 * server's advertised protocols are provided in |in| and |inlen|. The
2819 * callback can assume that |in| is syntactically valid. The client must
2820 * select a protocol. It is fatal to the connection if this callback returns
2821 * a value other than SSL_TLSEXT_ERR_OK.
2822 */
2823void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2824 SSL_CTX_npn_select_cb_func cb,
2825 void *arg)
2826{
2827 ctx->ext.npn_select_cb = cb;
2828 ctx->ext.npn_select_cb_arg = arg;
2829}
2830#endif
2831
2832/*
2833 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2834 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2835 * length-prefixed strings). Returns 0 on success.
2836 */
2837int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2838 unsigned int protos_len)
2839{
2840 OPENSSL_free(ctx->ext.alpn);
2841 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2842 if (ctx->ext.alpn == NULL) {
2843 ctx->ext.alpn_len = 0;
2844 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2845 return 1;
2846 }
2847 ctx->ext.alpn_len = protos_len;
2848
2849 return 0;
2850}
2851
2852/*
2853 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2854 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2855 * length-prefixed strings). Returns 0 on success.
2856 */
2857int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2858 unsigned int protos_len)
2859{
2860 OPENSSL_free(ssl->ext.alpn);
2861 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2862 if (ssl->ext.alpn == NULL) {
2863 ssl->ext.alpn_len = 0;
2864 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2865 return 1;
2866 }
2867 ssl->ext.alpn_len = protos_len;
2868
2869 return 0;
2870}
2871
2872/*
2873 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2874 * called during ClientHello processing in order to select an ALPN protocol
2875 * from the client's list of offered protocols.
2876 */
2877void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2878 SSL_CTX_alpn_select_cb_func cb,
2879 void *arg)
2880{
2881 ctx->ext.alpn_select_cb = cb;
2882 ctx->ext.alpn_select_cb_arg = arg;
2883}
2884
2885/*
2886 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2887 * On return it sets |*data| to point to |*len| bytes of protocol name
2888 * (not including the leading length-prefix byte). If the server didn't
2889 * respond with a negotiated protocol then |*len| will be zero.
2890 */
2891void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2892 unsigned int *len)
2893{
2894 *data = NULL;
2895 if (ssl->s3)
2896 *data = ssl->s3->alpn_selected;
2897 if (*data == NULL)
2898 *len = 0;
2899 else
2900 *len = (unsigned int)ssl->s3->alpn_selected_len;
2901}
2902
2903int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2904 const char *label, size_t llen,
2905 const unsigned char *context, size_t contextlen,
2906 int use_context)
2907{
2908 if (s->session == NULL
2909 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
2910 return -1;
2911
2912 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2913 llen, context,
2914 contextlen, use_context);
2915}
2916
2917int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2918 const char *label, size_t llen,
2919 const unsigned char *context,
2920 size_t contextlen)
2921{
2922 if (s->version != TLS1_3_VERSION)
2923 return 0;
2924
2925 return tls13_export_keying_material_early(s, out, olen, label, llen,
2926 context, contextlen);
2927}
2928
2929static unsigned long ssl_session_hash(const SSL_SESSION *a)
2930{
2931 const unsigned char *session_id = a->session_id;
2932 unsigned long l;
2933 unsigned char tmp_storage[4];
2934
2935 if (a->session_id_length < sizeof(tmp_storage)) {
2936 memset(tmp_storage, 0, sizeof(tmp_storage));
2937 memcpy(tmp_storage, a->session_id, a->session_id_length);
2938 session_id = tmp_storage;
2939 }
2940
2941 l = (unsigned long)
2942 ((unsigned long)session_id[0]) |
2943 ((unsigned long)session_id[1] << 8L) |
2944 ((unsigned long)session_id[2] << 16L) |
2945 ((unsigned long)session_id[3] << 24L);
2946 return l;
2947}
2948
2949/*
2950 * NB: If this function (or indeed the hash function which uses a sort of
2951 * coarser function than this one) is changed, ensure
2952 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2953 * being able to construct an SSL_SESSION that will collide with any existing
2954 * session with a matching session ID.
2955 */
2956static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2957{
2958 if (a->ssl_version != b->ssl_version)
2959 return 1;
2960 if (a->session_id_length != b->session_id_length)
2961 return 1;
2962 return memcmp(a->session_id, b->session_id, a->session_id_length);
2963}
2964
2965/*
2966 * These wrapper functions should remain rather than redeclaring
2967 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2968 * variable. The reason is that the functions aren't static, they're exposed
2969 * via ssl.h.
2970 */
2971
2972SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2973{
2974 SSL_CTX *ret = NULL;
2975
2976 if (meth == NULL) {
2977 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2978 return NULL;
2979 }
2980
2981 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2982 return NULL;
2983
2984 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2985 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2986 goto err;
2987 }
2988 ret = OPENSSL_zalloc(sizeof(*ret));
2989 if (ret == NULL)
2990 goto err;
2991
2992 ret->method = meth;
2993 ret->min_proto_version = 0;
2994 ret->max_proto_version = 0;
2995 ret->mode = SSL_MODE_AUTO_RETRY;
2996 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2997 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2998 /* We take the system default. */
2999 ret->session_timeout = meth->get_timeout();
3000 ret->references = 1;
3001 ret->lock = CRYPTO_THREAD_lock_new();
3002 if (ret->lock == NULL) {
3003 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3004 OPENSSL_free(ret);
3005 return NULL;
3006 }
3007 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3008 ret->verify_mode = SSL_VERIFY_NONE;
3009 if ((ret->cert = ssl_cert_new()) == NULL)
3010 goto err;
3011
3012 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3013 if (ret->sessions == NULL)
3014 goto err;
3015 ret->cert_store = X509_STORE_new();
3016 if (ret->cert_store == NULL)
3017 goto err;
3018#ifndef OPENSSL_NO_CT
3019 ret->ctlog_store = CTLOG_STORE_new();
3020 if (ret->ctlog_store == NULL)
3021 goto err;
3022#endif
3023
3024 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
3025 goto err;
3026
3027 if (!ssl_create_cipher_list(ret->method,
3028 ret->tls13_ciphersuites,
3029 &ret->cipher_list, &ret->cipher_list_by_id,
3030 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3031 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3032 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3033 goto err2;
3034 }
3035
3036 ret->param = X509_VERIFY_PARAM_new();
3037 if (ret->param == NULL)
3038 goto err;
3039
3040 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3041 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3042 goto err2;
3043 }
3044 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3045 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3046 goto err2;
3047 }
3048
3049 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3050 goto err;
3051
3052 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3053 goto err;
3054
3055 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3056 goto err;
3057
3058 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3059 goto err;
3060
3061 /* No compression for DTLS */
3062 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3063 ret->comp_methods = SSL_COMP_get_compression_methods();
3064
3065 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3066 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3067
3068 /* Setup RFC5077 ticket keys */
3069 if ((RAND_bytes(ret->ext.tick_key_name,
3070 sizeof(ret->ext.tick_key_name)) <= 0)
3071 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
3072 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3073 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
3074 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3075 ret->options |= SSL_OP_NO_TICKET;
3076
3077 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
3078 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3079 goto err;
3080
3081#ifndef OPENSSL_NO_SRP
3082 if (!SSL_CTX_SRP_CTX_init(ret))
3083 goto err;
3084#endif
3085#ifndef OPENSSL_NO_ENGINE
3086# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3087# define eng_strx(x) #x
3088# define eng_str(x) eng_strx(x)
3089 /* Use specific client engine automatically... ignore errors */
3090 {
3091 ENGINE *eng;
3092 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3093 if (!eng) {
3094 ERR_clear_error();
3095 ENGINE_load_builtin_engines();
3096 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3097 }
3098 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3099 ERR_clear_error();
3100 }
3101# endif
3102#endif
3103 /*
3104 * Default is to connect to non-RI servers. When RI is more widely
3105 * deployed might change this.
3106 */
3107 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3108 /*
3109 * Disable compression by default to prevent CRIME. Applications can
3110 * re-enable compression by configuring
3111 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3112 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3113 * middlebox compatibility by default. This may be disabled by default in
3114 * a later OpenSSL version.
3115 */
3116 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3117
3118 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3119
3120 /*
3121 * We cannot usefully set a default max_early_data here (which gets
3122 * propagated in SSL_new(), for the following reason: setting the
3123 * SSL field causes tls_construct_stoc_early_data() to tell the
3124 * client that early data will be accepted when constructing a TLS 1.3
3125 * session ticket, and the client will accordingly send us early data
3126 * when using that ticket (if the client has early data to send).
3127 * However, in order for the early data to actually be consumed by
3128 * the application, the application must also have calls to
3129 * SSL_read_early_data(); otherwise we'll just skip past the early data
3130 * and ignore it. So, since the application must add calls to
3131 * SSL_read_early_data(), we also require them to add
3132 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3133 * eliminating the bandwidth-wasting early data in the case described
3134 * above.
3135 */
3136 ret->max_early_data = 0;
3137
3138 /*
3139 * Default recv_max_early_data is a fully loaded single record. Could be
3140 * split across multiple records in practice. We set this differently to
3141 * max_early_data so that, in the default case, we do not advertise any
3142 * support for early_data, but if a client were to send us some (e.g.
3143 * because of an old, stale ticket) then we will tolerate it and skip over
3144 * it.
3145 */
3146 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3147
3148 /* By default we send two session tickets automatically in TLSv1.3 */
3149 ret->num_tickets = 2;
3150
3151 ssl_ctx_system_config(ret);
3152
3153 return ret;
3154 err:
3155 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3156 err2:
3157 SSL_CTX_free(ret);
3158 return NULL;
3159}
3160
3161int SSL_CTX_up_ref(SSL_CTX *ctx)
3162{
3163 int i;
3164
3165 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3166 return 0;
3167
3168 REF_PRINT_COUNT("SSL_CTX", ctx);
3169 REF_ASSERT_ISNT(i < 2);
3170 return ((i > 1) ? 1 : 0);
3171}
3172
3173void SSL_CTX_free(SSL_CTX *a)
3174{
3175 int i;
3176
3177 if (a == NULL)
3178 return;
3179
3180 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3181 REF_PRINT_COUNT("SSL_CTX", a);
3182 if (i > 0)
3183 return;
3184 REF_ASSERT_ISNT(i < 0);
3185
3186 X509_VERIFY_PARAM_free(a->param);
3187 dane_ctx_final(&a->dane);
3188
3189 /*
3190 * Free internal session cache. However: the remove_cb() may reference
3191 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3192 * after the sessions were flushed.
3193 * As the ex_data handling routines might also touch the session cache,
3194 * the most secure solution seems to be: empty (flush) the cache, then
3195 * free ex_data, then finally free the cache.
3196 * (See ticket [openssl.org #212].)
3197 */
3198 if (a->sessions != NULL)
3199 SSL_CTX_flush_sessions(a, 0);
3200
3201 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3202 lh_SSL_SESSION_free(a->sessions);
3203 X509_STORE_free(a->cert_store);
3204#ifndef OPENSSL_NO_CT
3205 CTLOG_STORE_free(a->ctlog_store);
3206#endif
3207 sk_SSL_CIPHER_free(a->cipher_list);
3208 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3209 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3210 ssl_cert_free(a->cert);
3211 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3212 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3213 sk_X509_pop_free(a->extra_certs, X509_free);
3214 a->comp_methods = NULL;
3215#ifndef OPENSSL_NO_SRTP
3216 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3217#endif
3218#ifndef OPENSSL_NO_SRP
3219 SSL_CTX_SRP_CTX_free(a);
3220#endif
3221#ifndef OPENSSL_NO_ENGINE
3222 ENGINE_finish(a->client_cert_engine);
3223#endif
3224
3225#ifndef OPENSSL_NO_EC
3226 OPENSSL_free(a->ext.ecpointformats);
3227 OPENSSL_free(a->ext.supportedgroups);
3228#endif
3229 OPENSSL_free(a->ext.alpn);
3230 OPENSSL_secure_free(a->ext.secure);
3231
3232 CRYPTO_THREAD_lock_free(a->lock);
3233
3234 OPENSSL_free(a);
3235}
3236
3237void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3238{
3239 ctx->default_passwd_callback = cb;
3240}
3241
3242void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3243{
3244 ctx->default_passwd_callback_userdata = u;
3245}
3246
3247pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3248{
3249 return ctx->default_passwd_callback;
3250}
3251
3252void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3253{
3254 return ctx->default_passwd_callback_userdata;
3255}
3256
3257void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3258{
3259 s->default_passwd_callback = cb;
3260}
3261
3262void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3263{
3264 s->default_passwd_callback_userdata = u;
3265}
3266
3267pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3268{
3269 return s->default_passwd_callback;
3270}
3271
3272void *SSL_get_default_passwd_cb_userdata(SSL *s)
3273{
3274 return s->default_passwd_callback_userdata;
3275}
3276
3277void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3278 int (*cb) (X509_STORE_CTX *, void *),
3279 void *arg)
3280{
3281 ctx->app_verify_callback = cb;
3282 ctx->app_verify_arg = arg;
3283}
3284
3285void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3286 int (*cb) (int, X509_STORE_CTX *))
3287{
3288 ctx->verify_mode = mode;
3289 ctx->default_verify_callback = cb;
3290}
3291
3292void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3293{
3294 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3295}
3296
3297void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3298{
3299 ssl_cert_set_cert_cb(c->cert, cb, arg);
3300}
3301
3302void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3303{
3304 ssl_cert_set_cert_cb(s->cert, cb, arg);
3305}
3306
3307void ssl_set_masks(SSL *s)
3308{
3309 CERT *c = s->cert;
3310 uint32_t *pvalid = s->s3->tmp.valid_flags;
3311 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3312 unsigned long mask_k, mask_a;
3313#ifndef OPENSSL_NO_EC
3314 int have_ecc_cert, ecdsa_ok;
3315#endif
3316 if (c == NULL)
3317 return;
3318
3319#ifndef OPENSSL_NO_DH
3320 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3321#else
3322 dh_tmp = 0;
3323#endif
3324
3325 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3326 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3327 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3328#ifndef OPENSSL_NO_EC
3329 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3330#endif
3331 mask_k = 0;
3332 mask_a = 0;
3333
3334#ifdef CIPHER_DEBUG
3335 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3336 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3337#endif
3338
3339#ifndef OPENSSL_NO_GOST
3340 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3341 mask_k |= SSL_kGOST;
3342 mask_a |= SSL_aGOST12;
3343 }
3344 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3345 mask_k |= SSL_kGOST;
3346 mask_a |= SSL_aGOST12;
3347 }
3348 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3349 mask_k |= SSL_kGOST;
3350 mask_a |= SSL_aGOST01;
3351 }
3352#endif
3353
3354 if (rsa_enc)
3355 mask_k |= SSL_kRSA;
3356
3357 if (dh_tmp)
3358 mask_k |= SSL_kDHE;
3359
3360 /*
3361 * If we only have an RSA-PSS certificate allow RSA authentication
3362 * if TLS 1.2 and peer supports it.
3363 */
3364
3365 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3366 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3367 && TLS1_get_version(s) == TLS1_2_VERSION))
3368 mask_a |= SSL_aRSA;
3369
3370 if (dsa_sign) {
3371 mask_a |= SSL_aDSS;
3372 }
3373
3374 mask_a |= SSL_aNULL;
3375
3376 /*
3377 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3378 * depending on the key usage extension.
3379 */
3380#ifndef OPENSSL_NO_EC
3381 if (have_ecc_cert) {
3382 uint32_t ex_kusage;
3383 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3384 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3385 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3386 ecdsa_ok = 0;
3387 if (ecdsa_ok)
3388 mask_a |= SSL_aECDSA;
3389 }
3390 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3391 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3392 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3393 && TLS1_get_version(s) == TLS1_2_VERSION)
3394 mask_a |= SSL_aECDSA;
3395
3396 /* Allow Ed448 for TLS 1.2 if peer supports it */
3397 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3398 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3399 && TLS1_get_version(s) == TLS1_2_VERSION)
3400 mask_a |= SSL_aECDSA;
3401#endif
3402
3403#ifndef OPENSSL_NO_EC
3404 mask_k |= SSL_kECDHE;
3405#endif
3406
3407#ifndef OPENSSL_NO_PSK
3408 mask_k |= SSL_kPSK;
3409 mask_a |= SSL_aPSK;
3410 if (mask_k & SSL_kRSA)
3411 mask_k |= SSL_kRSAPSK;
3412 if (mask_k & SSL_kDHE)
3413 mask_k |= SSL_kDHEPSK;
3414 if (mask_k & SSL_kECDHE)
3415 mask_k |= SSL_kECDHEPSK;
3416#endif
3417
3418 s->s3->tmp.mask_k = mask_k;
3419 s->s3->tmp.mask_a = mask_a;
3420}
3421
3422#ifndef OPENSSL_NO_EC
3423
3424int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3425{
3426 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3427 /* key usage, if present, must allow signing */
3428 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3429 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3430 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3431 return 0;
3432 }
3433 }
3434 return 1; /* all checks are ok */
3435}
3436
3437#endif
3438
3439int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3440 size_t *serverinfo_length)
3441{
3442 CERT_PKEY *cpk = s->s3->tmp.cert;
3443 *serverinfo_length = 0;
3444
3445 if (cpk == NULL || cpk->serverinfo == NULL)
3446 return 0;
3447
3448 *serverinfo = cpk->serverinfo;
3449 *serverinfo_length = cpk->serverinfo_length;
3450 return 1;
3451}
3452
3453void ssl_update_cache(SSL *s, int mode)
3454{
3455 int i;
3456
3457 /*
3458 * If the session_id_length is 0, we are not supposed to cache it, and it
3459 * would be rather hard to do anyway :-)
3460 */
3461 if (s->session->session_id_length == 0)
3462 return;
3463
3464 /*
3465 * If sid_ctx_length is 0 there is no specific application context
3466 * associated with this session, so when we try to resume it and
3467 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3468 * indication that this is actually a session for the proper application
3469 * context, and the *handshake* will fail, not just the resumption attempt.
3470 * Do not cache (on the server) these sessions that are not resumable
3471 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3472 */
3473 if (s->server && s->session->sid_ctx_length == 0
3474 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3475 return;
3476
3477 i = s->session_ctx->session_cache_mode;
3478 if ((i & mode) != 0
3479 && (!s->hit || SSL_IS_TLS13(s))) {
3480 /*
3481 * Add the session to the internal cache. In server side TLSv1.3 we
3482 * normally don't do this because by default it's a full stateless ticket
3483 * with only a dummy session id so there is no reason to cache it,
3484 * unless:
3485 * - we are doing early_data, in which case we cache so that we can
3486 * detect replays
3487 * - the application has set a remove_session_cb so needs to know about
3488 * session timeout events
3489 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3490 */
3491 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3492 && (!SSL_IS_TLS13(s)
3493 || !s->server
3494 || (s->max_early_data > 0
3495 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3496 || s->session_ctx->remove_session_cb != NULL
3497 || (s->options & SSL_OP_NO_TICKET) != 0))
3498 SSL_CTX_add_session(s->session_ctx, s->session);
3499
3500 /*
3501 * Add the session to the external cache. We do this even in server side
3502 * TLSv1.3 without early data because some applications just want to
3503 * know about the creation of a session and aren't doing a full cache.
3504 */
3505 if (s->session_ctx->new_session_cb != NULL) {
3506 SSL_SESSION_up_ref(s->session);
3507 if (!s->session_ctx->new_session_cb(s, s->session))
3508 SSL_SESSION_free(s->session);
3509 }
3510 }
3511
3512 /* auto flush every 255 connections */
3513 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3514 TSAN_QUALIFIER int *stat;
3515 if (mode & SSL_SESS_CACHE_CLIENT)
3516 stat = &s->session_ctx->stats.sess_connect_good;
3517 else
3518 stat = &s->session_ctx->stats.sess_accept_good;
3519 if ((tsan_load(stat) & 0xff) == 0xff)
3520 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3521 }
3522}
3523
3524const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3525{
3526 return ctx->method;
3527}
3528
3529const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3530{
3531 return s->method;
3532}
3533
3534int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3535{
3536 int ret = 1;
3537
3538 if (s->method != meth) {
3539 const SSL_METHOD *sm = s->method;
3540 int (*hf) (SSL *) = s->handshake_func;
3541
3542 if (sm->version == meth->version)
3543 s->method = meth;
3544 else {
3545 sm->ssl_free(s);
3546 s->method = meth;
3547 ret = s->method->ssl_new(s);
3548 }
3549
3550 if (hf == sm->ssl_connect)
3551 s->handshake_func = meth->ssl_connect;
3552 else if (hf == sm->ssl_accept)
3553 s->handshake_func = meth->ssl_accept;
3554 }
3555 return ret;
3556}
3557
3558int SSL_get_error(const SSL *s, int i)
3559{
3560 int reason;
3561 unsigned long l;
3562 BIO *bio;
3563
3564 if (i > 0)
3565 return SSL_ERROR_NONE;
3566
3567 /*
3568 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3569 * where we do encode the error
3570 */
3571 if ((l = ERR_peek_error()) != 0) {
3572 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3573 return SSL_ERROR_SYSCALL;
3574 else
3575 return SSL_ERROR_SSL;
3576 }
3577
3578 if (SSL_want_read(s)) {
3579 bio = SSL_get_rbio(s);
3580 if (BIO_should_read(bio))
3581 return SSL_ERROR_WANT_READ;
3582 else if (BIO_should_write(bio))
3583 /*
3584 * This one doesn't make too much sense ... We never try to write
3585 * to the rbio, and an application program where rbio and wbio
3586 * are separate couldn't even know what it should wait for.
3587 * However if we ever set s->rwstate incorrectly (so that we have
3588 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3589 * wbio *are* the same, this test works around that bug; so it
3590 * might be safer to keep it.
3591 */
3592 return SSL_ERROR_WANT_WRITE;
3593 else if (BIO_should_io_special(bio)) {
3594 reason = BIO_get_retry_reason(bio);
3595 if (reason == BIO_RR_CONNECT)
3596 return SSL_ERROR_WANT_CONNECT;
3597 else if (reason == BIO_RR_ACCEPT)
3598 return SSL_ERROR_WANT_ACCEPT;
3599 else
3600 return SSL_ERROR_SYSCALL; /* unknown */
3601 }
3602 }
3603
3604 if (SSL_want_write(s)) {
3605 /* Access wbio directly - in order to use the buffered bio if present */
3606 bio = s->wbio;
3607 if (BIO_should_write(bio))
3608 return SSL_ERROR_WANT_WRITE;
3609 else if (BIO_should_read(bio))
3610 /*
3611 * See above (SSL_want_read(s) with BIO_should_write(bio))
3612 */
3613 return SSL_ERROR_WANT_READ;
3614 else if (BIO_should_io_special(bio)) {
3615 reason = BIO_get_retry_reason(bio);
3616 if (reason == BIO_RR_CONNECT)
3617 return SSL_ERROR_WANT_CONNECT;
3618 else if (reason == BIO_RR_ACCEPT)
3619 return SSL_ERROR_WANT_ACCEPT;
3620 else
3621 return SSL_ERROR_SYSCALL;
3622 }
3623 }
3624 if (SSL_want_x509_lookup(s))
3625 return SSL_ERROR_WANT_X509_LOOKUP;
3626 if (SSL_want_async(s))
3627 return SSL_ERROR_WANT_ASYNC;
3628 if (SSL_want_async_job(s))
3629 return SSL_ERROR_WANT_ASYNC_JOB;
3630 if (SSL_want_client_hello_cb(s))
3631 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3632
3633 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3634 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3635 return SSL_ERROR_ZERO_RETURN;
3636
3637 return SSL_ERROR_SYSCALL;
3638}
3639
3640static int ssl_do_handshake_intern(void *vargs)
3641{
3642 struct ssl_async_args *args;
3643 SSL *s;
3644
3645 args = (struct ssl_async_args *)vargs;
3646 s = args->s;
3647
3648 return s->handshake_func(s);
3649}
3650
3651int SSL_do_handshake(SSL *s)
3652{
3653 int ret = 1;
3654
3655 if (s->handshake_func == NULL) {
3656 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3657 return -1;
3658 }
3659
3660 ossl_statem_check_finish_init(s, -1);
3661
3662 s->method->ssl_renegotiate_check(s, 0);
3663
3664 if (SSL_in_init(s) || SSL_in_before(s)) {
3665 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3666 struct ssl_async_args args;
3667
3668 args.s = s;
3669
3670 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3671 } else {
3672 ret = s->handshake_func(s);
3673 }
3674 }
3675 return ret;
3676}
3677
3678void SSL_set_accept_state(SSL *s)
3679{
3680 s->server = 1;
3681 s->shutdown = 0;
3682 ossl_statem_clear(s);
3683 s->handshake_func = s->method->ssl_accept;
3684 clear_ciphers(s);
3685}
3686
3687void SSL_set_connect_state(SSL *s)
3688{
3689 s->server = 0;
3690 s->shutdown = 0;
3691 ossl_statem_clear(s);
3692 s->handshake_func = s->method->ssl_connect;
3693 clear_ciphers(s);
3694}
3695
3696int ssl_undefined_function(SSL *s)
3697{
3698 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3699 return 0;
3700}
3701
3702int ssl_undefined_void_function(void)
3703{
3704 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3705 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3706 return 0;
3707}
3708
3709int ssl_undefined_const_function(const SSL *s)
3710{
3711 return 0;
3712}
3713
3714const SSL_METHOD *ssl_bad_method(int ver)
3715{
3716 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3717 return NULL;
3718}
3719
3720const char *ssl_protocol_to_string(int version)
3721{
3722 switch(version)
3723 {
3724 case TLS1_3_VERSION:
3725 return "TLSv1.3";
3726
3727 case TLS1_2_VERSION:
3728 return "TLSv1.2";
3729
3730 case TLS1_1_VERSION:
3731 return "TLSv1.1";
3732
3733 case TLS1_VERSION:
3734 return "TLSv1";
3735
3736 case SSL3_VERSION:
3737 return "SSLv3";
3738
3739 case DTLS1_BAD_VER:
3740 return "DTLSv0.9";
3741
3742 case DTLS1_VERSION:
3743 return "DTLSv1";
3744
3745 case DTLS1_2_VERSION:
3746 return "DTLSv1.2";
3747
3748 default:
3749 return "unknown";
3750 }
3751}
3752
3753const char *SSL_get_version(const SSL *s)
3754{
3755 return ssl_protocol_to_string(s->version);
3756}
3757
3758static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3759{
3760 STACK_OF(X509_NAME) *sk;
3761 X509_NAME *xn;
3762 int i;
3763
3764 if (src == NULL) {
3765 *dst = NULL;
3766 return 1;
3767 }
3768
3769 if ((sk = sk_X509_NAME_new_null()) == NULL)
3770 return 0;
3771 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3772 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3773 if (xn == NULL) {
3774 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3775 return 0;
3776 }
3777 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3778 X509_NAME_free(xn);
3779 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3780 return 0;
3781 }
3782 }
3783 *dst = sk;
3784
3785 return 1;
3786}
3787
3788SSL *SSL_dup(SSL *s)
3789{
3790 SSL *ret;
3791 int i;
3792
3793 /* If we're not quiescent, just up_ref! */
3794 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3795 CRYPTO_UP_REF(&s->references, &i, s->lock);
3796 return s;
3797 }
3798
3799 /*
3800 * Otherwise, copy configuration state, and session if set.
3801 */
3802 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3803 return NULL;
3804
3805 if (s->session != NULL) {
3806 /*
3807 * Arranges to share the same session via up_ref. This "copies"
3808 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3809 */
3810 if (!SSL_copy_session_id(ret, s))
3811 goto err;
3812 } else {
3813 /*
3814 * No session has been established yet, so we have to expect that
3815 * s->cert or ret->cert will be changed later -- they should not both
3816 * point to the same object, and thus we can't use
3817 * SSL_copy_session_id.
3818 */
3819 if (!SSL_set_ssl_method(ret, s->method))
3820 goto err;
3821
3822 if (s->cert != NULL) {
3823 ssl_cert_free(ret->cert);
3824 ret->cert = ssl_cert_dup(s->cert);
3825 if (ret->cert == NULL)
3826 goto err;
3827 }
3828
3829 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3830 (int)s->sid_ctx_length))
3831 goto err;
3832 }
3833
3834 if (!ssl_dane_dup(ret, s))
3835 goto err;
3836 ret->version = s->version;
3837 ret->options = s->options;
3838 ret->min_proto_version = s->min_proto_version;
3839 ret->max_proto_version = s->max_proto_version;
3840 ret->mode = s->mode;
3841 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3842 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3843 ret->msg_callback = s->msg_callback;
3844 ret->msg_callback_arg = s->msg_callback_arg;
3845 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3846 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3847 ret->generate_session_id = s->generate_session_id;
3848
3849 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3850
3851 /* copy app data, a little dangerous perhaps */
3852 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3853 goto err;
3854
3855 ret->server = s->server;
3856 if (s->handshake_func) {
3857 if (s->server)
3858 SSL_set_accept_state(ret);
3859 else
3860 SSL_set_connect_state(ret);
3861 }
3862 ret->shutdown = s->shutdown;
3863 ret->hit = s->hit;
3864
3865 ret->default_passwd_callback = s->default_passwd_callback;
3866 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3867
3868 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3869
3870 /* dup the cipher_list and cipher_list_by_id stacks */
3871 if (s->cipher_list != NULL) {
3872 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3873 goto err;
3874 }
3875 if (s->cipher_list_by_id != NULL)
3876 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3877 == NULL)
3878 goto err;
3879
3880 /* Dup the client_CA list */
3881 if (!dup_ca_names(&ret->ca_names, s->ca_names)
3882 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
3883 goto err;
3884
3885 return ret;
3886
3887 err:
3888 SSL_free(ret);
3889 return NULL;
3890}
3891
3892void ssl_clear_cipher_ctx(SSL *s)
3893{
3894 if (s->enc_read_ctx != NULL) {
3895 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3896 s->enc_read_ctx = NULL;
3897 }
3898 if (s->enc_write_ctx != NULL) {
3899 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3900 s->enc_write_ctx = NULL;
3901 }
3902#ifndef OPENSSL_NO_COMP
3903 COMP_CTX_free(s->expand);
3904 s->expand = NULL;
3905 COMP_CTX_free(s->compress);
3906 s->compress = NULL;
3907#endif
3908}
3909
3910X509 *SSL_get_certificate(const SSL *s)
3911{
3912 if (s->cert != NULL)
3913 return s->cert->key->x509;
3914 else
3915 return NULL;
3916}
3917
3918EVP_PKEY *SSL_get_privatekey(const SSL *s)
3919{
3920 if (s->cert != NULL)
3921 return s->cert->key->privatekey;
3922 else
3923 return NULL;
3924}
3925
3926X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3927{
3928 if (ctx->cert != NULL)
3929 return ctx->cert->key->x509;
3930 else
3931 return NULL;
3932}
3933
3934EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3935{
3936 if (ctx->cert != NULL)
3937 return ctx->cert->key->privatekey;
3938 else
3939 return NULL;
3940}
3941
3942const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3943{
3944 if ((s->session != NULL) && (s->session->cipher != NULL))
3945 return s->session->cipher;
3946 return NULL;
3947}
3948
3949const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3950{
3951 return s->s3->tmp.new_cipher;
3952}
3953
3954const COMP_METHOD *SSL_get_current_compression(const SSL *s)
3955{
3956#ifndef OPENSSL_NO_COMP
3957 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3958#else
3959 return NULL;
3960#endif
3961}
3962
3963const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
3964{
3965#ifndef OPENSSL_NO_COMP
3966 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3967#else
3968 return NULL;
3969#endif
3970}
3971
3972int ssl_init_wbio_buffer(SSL *s)
3973{
3974 BIO *bbio;
3975
3976 if (s->bbio != NULL) {
3977 /* Already buffered. */
3978 return 1;
3979 }
3980
3981 bbio = BIO_new(BIO_f_buffer());
3982 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3983 BIO_free(bbio);
3984 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3985 return 0;
3986 }
3987 s->bbio = bbio;
3988 s->wbio = BIO_push(bbio, s->wbio);
3989
3990 return 1;
3991}
3992
3993int ssl_free_wbio_buffer(SSL *s)
3994{
3995 /* callers ensure s is never null */
3996 if (s->bbio == NULL)
3997 return 1;
3998
3999 s->wbio = BIO_pop(s->wbio);
4000 BIO_free(s->bbio);
4001 s->bbio = NULL;
4002
4003 return 1;
4004}
4005
4006void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4007{
4008 ctx->quiet_shutdown = mode;
4009}
4010
4011int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4012{
4013 return ctx->quiet_shutdown;
4014}
4015
4016void SSL_set_quiet_shutdown(SSL *s, int mode)
4017{
4018 s->quiet_shutdown = mode;
4019}
4020
4021int SSL_get_quiet_shutdown(const SSL *s)
4022{
4023 return s->quiet_shutdown;
4024}
4025
4026void SSL_set_shutdown(SSL *s, int mode)
4027{
4028 s->shutdown = mode;
4029}
4030
4031int SSL_get_shutdown(const SSL *s)
4032{
4033 return s->shutdown;
4034}
4035
4036int SSL_version(const SSL *s)
4037{
4038 return s->version;
4039}
4040
4041int SSL_client_version(const SSL *s)
4042{
4043 return s->client_version;
4044}
4045
4046SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4047{
4048 return ssl->ctx;
4049}
4050
4051SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4052{
4053 CERT *new_cert;
4054 if (ssl->ctx == ctx)
4055 return ssl->ctx;
4056 if (ctx == NULL)
4057 ctx = ssl->session_ctx;
4058 new_cert = ssl_cert_dup(ctx->cert);
4059 if (new_cert == NULL) {
4060 return NULL;
4061 }
4062
4063 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4064 ssl_cert_free(new_cert);
4065 return NULL;
4066 }
4067
4068 ssl_cert_free(ssl->cert);
4069 ssl->cert = new_cert;
4070
4071 /*
4072 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4073 * so setter APIs must prevent invalid lengths from entering the system.
4074 */
4075 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4076 return NULL;
4077
4078 /*
4079 * If the session ID context matches that of the parent SSL_CTX,
4080 * inherit it from the new SSL_CTX as well. If however the context does
4081 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4082 * leave it unchanged.
4083 */
4084 if ((ssl->ctx != NULL) &&
4085 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4086 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4087 ssl->sid_ctx_length = ctx->sid_ctx_length;
4088 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4089 }
4090
4091 SSL_CTX_up_ref(ctx);
4092 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4093 ssl->ctx = ctx;
4094
4095 return ssl->ctx;
4096}
4097
4098int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4099{
4100 return X509_STORE_set_default_paths(ctx->cert_store);
4101}
4102
4103int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4104{
4105 X509_LOOKUP *lookup;
4106
4107 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4108 if (lookup == NULL)
4109 return 0;
4110 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4111
4112 /* Clear any errors if the default directory does not exist */
4113 ERR_clear_error();
4114
4115 return 1;
4116}
4117
4118int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4119{
4120 X509_LOOKUP *lookup;
4121
4122 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4123 if (lookup == NULL)
4124 return 0;
4125
4126 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4127
4128 /* Clear any errors if the default file does not exist */
4129 ERR_clear_error();
4130
4131 return 1;
4132}
4133
4134int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4135 const char *CApath)
4136{
4137 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
4138}
4139
4140void SSL_set_info_callback(SSL *ssl,
4141 void (*cb) (const SSL *ssl, int type, int val))
4142{
4143 ssl->info_callback = cb;
4144}
4145
4146/*
4147 * One compiler (Diab DCC) doesn't like argument names in returned function
4148 * pointer.
4149 */
4150void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4151 int /* type */ ,
4152 int /* val */ ) {
4153 return ssl->info_callback;
4154}
4155
4156void SSL_set_verify_result(SSL *ssl, long arg)
4157{
4158 ssl->verify_result = arg;
4159}
4160
4161long SSL_get_verify_result(const SSL *ssl)
4162{
4163 return ssl->verify_result;
4164}
4165
4166size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4167{
4168 if (outlen == 0)
4169 return sizeof(ssl->s3->client_random);
4170 if (outlen > sizeof(ssl->s3->client_random))
4171 outlen = sizeof(ssl->s3->client_random);
4172 memcpy(out, ssl->s3->client_random, outlen);
4173 return outlen;
4174}
4175
4176size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4177{
4178 if (outlen == 0)
4179 return sizeof(ssl->s3->server_random);
4180 if (outlen > sizeof(ssl->s3->server_random))
4181 outlen = sizeof(ssl->s3->server_random);
4182 memcpy(out, ssl->s3->server_random, outlen);
4183 return outlen;
4184}
4185
4186size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4187 unsigned char *out, size_t outlen)
4188{
4189 if (outlen == 0)
4190 return session->master_key_length;
4191 if (outlen > session->master_key_length)
4192 outlen = session->master_key_length;
4193 memcpy(out, session->master_key, outlen);
4194 return outlen;
4195}
4196
4197int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4198 size_t len)
4199{
4200 if (len > sizeof(sess->master_key))
4201 return 0;
4202
4203 memcpy(sess->master_key, in, len);
4204 sess->master_key_length = len;
4205 return 1;
4206}
4207
4208
4209int SSL_set_ex_data(SSL *s, int idx, void *arg)
4210{
4211 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4212}
4213
4214void *SSL_get_ex_data(const SSL *s, int idx)
4215{
4216 return CRYPTO_get_ex_data(&s->ex_data, idx);
4217}
4218
4219int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4220{
4221 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4222}
4223
4224void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4225{
4226 return CRYPTO_get_ex_data(&s->ex_data, idx);
4227}
4228
4229X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4230{
4231 return ctx->cert_store;
4232}
4233
4234void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4235{
4236 X509_STORE_free(ctx->cert_store);
4237 ctx->cert_store = store;
4238}
4239
4240void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4241{
4242 if (store != NULL)
4243 X509_STORE_up_ref(store);
4244 SSL_CTX_set_cert_store(ctx, store);
4245}
4246
4247int SSL_want(const SSL *s)
4248{
4249 return s->rwstate;
4250}
4251
4252/**
4253 * \brief Set the callback for generating temporary DH keys.
4254 * \param ctx the SSL context.
4255 * \param dh the callback
4256 */
4257
4258#ifndef OPENSSL_NO_DH
4259void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4260 DH *(*dh) (SSL *ssl, int is_export,
4261 int keylength))
4262{
4263 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4264}
4265
4266void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4267 int keylength))
4268{
4269 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4270}
4271#endif
4272
4273#ifndef OPENSSL_NO_PSK
4274int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4275{
4276 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4277 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4278 return 0;
4279 }
4280 OPENSSL_free(ctx->cert->psk_identity_hint);
4281 if (identity_hint != NULL) {
4282 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4283 if (ctx->cert->psk_identity_hint == NULL)
4284 return 0;
4285 } else
4286 ctx->cert->psk_identity_hint = NULL;
4287 return 1;
4288}
4289
4290int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4291{
4292 if (s == NULL)
4293 return 0;
4294
4295 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4296 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4297 return 0;
4298 }
4299 OPENSSL_free(s->cert->psk_identity_hint);
4300 if (identity_hint != NULL) {
4301 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4302 if (s->cert->psk_identity_hint == NULL)
4303 return 0;
4304 } else
4305 s->cert->psk_identity_hint = NULL;
4306 return 1;
4307}
4308
4309const char *SSL_get_psk_identity_hint(const SSL *s)
4310{
4311 if (s == NULL || s->session == NULL)
4312 return NULL;
4313 return s->session->psk_identity_hint;
4314}
4315
4316const char *SSL_get_psk_identity(const SSL *s)
4317{
4318 if (s == NULL || s->session == NULL)
4319 return NULL;
4320 return s->session->psk_identity;
4321}
4322
4323void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4324{
4325 s->psk_client_callback = cb;
4326}
4327
4328void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4329{
4330 ctx->psk_client_callback = cb;
4331}
4332
4333void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4334{
4335 s->psk_server_callback = cb;
4336}
4337
4338void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4339{
4340 ctx->psk_server_callback = cb;
4341}
4342#endif
4343
4344void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4345{
4346 s->psk_find_session_cb = cb;
4347}
4348
4349void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4350 SSL_psk_find_session_cb_func cb)
4351{
4352 ctx->psk_find_session_cb = cb;
4353}
4354
4355void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4356{
4357 s->psk_use_session_cb = cb;
4358}
4359
4360void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4361 SSL_psk_use_session_cb_func cb)
4362{
4363 ctx->psk_use_session_cb = cb;
4364}
4365
4366void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4367 void (*cb) (int write_p, int version,
4368 int content_type, const void *buf,
4369 size_t len, SSL *ssl, void *arg))
4370{
4371 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4372}
4373
4374void SSL_set_msg_callback(SSL *ssl,
4375 void (*cb) (int write_p, int version,
4376 int content_type, const void *buf,
4377 size_t len, SSL *ssl, void *arg))
4378{
4379 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4380}
4381
4382void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4383 int (*cb) (SSL *ssl,
4384 int
4385 is_forward_secure))
4386{
4387 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4388 (void (*)(void))cb);
4389}
4390
4391void SSL_set_not_resumable_session_callback(SSL *ssl,
4392 int (*cb) (SSL *ssl,
4393 int is_forward_secure))
4394{
4395 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4396 (void (*)(void))cb);
4397}
4398
4399void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4400 size_t (*cb) (SSL *ssl, int type,
4401 size_t len, void *arg))
4402{
4403 ctx->record_padding_cb = cb;
4404}
4405
4406void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4407{
4408 ctx->record_padding_arg = arg;
4409}
4410
4411void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4412{
4413 return ctx->record_padding_arg;
4414}
4415
4416int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4417{
4418 /* block size of 0 or 1 is basically no padding */
4419 if (block_size == 1)
4420 ctx->block_padding = 0;
4421 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4422 ctx->block_padding = block_size;
4423 else
4424 return 0;
4425 return 1;
4426}
4427
4428void SSL_set_record_padding_callback(SSL *ssl,
4429 size_t (*cb) (SSL *ssl, int type,
4430 size_t len, void *arg))
4431{
4432 ssl->record_padding_cb = cb;
4433}
4434
4435void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4436{
4437 ssl->record_padding_arg = arg;
4438}
4439
4440void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4441{
4442 return ssl->record_padding_arg;
4443}
4444
4445int SSL_set_block_padding(SSL *ssl, size_t block_size)
4446{
4447 /* block size of 0 or 1 is basically no padding */
4448 if (block_size == 1)
4449 ssl->block_padding = 0;
4450 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4451 ssl->block_padding = block_size;
4452 else
4453 return 0;
4454 return 1;
4455}
4456
4457int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4458{
4459 s->num_tickets = num_tickets;
4460
4461 return 1;
4462}
4463
4464size_t SSL_get_num_tickets(const SSL *s)
4465{
4466 return s->num_tickets;
4467}
4468
4469int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4470{
4471 ctx->num_tickets = num_tickets;
4472
4473 return 1;
4474}
4475
4476size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4477{
4478 return ctx->num_tickets;
4479}
4480
4481/*
4482 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4483 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4484 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4485 * Returns the newly allocated ctx;
4486 */
4487
4488EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4489{
4490 ssl_clear_hash_ctx(hash);
4491 *hash = EVP_MD_CTX_new();
4492 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4493 EVP_MD_CTX_free(*hash);
4494 *hash = NULL;
4495 return NULL;
4496 }
4497 return *hash;
4498}
4499
4500void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4501{
4502
4503 EVP_MD_CTX_free(*hash);
4504 *hash = NULL;
4505}
4506
4507/* Retrieve handshake hashes */
4508int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4509 size_t *hashlen)
4510{
4511 EVP_MD_CTX *ctx = NULL;
4512 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4513 int hashleni = EVP_MD_CTX_size(hdgst);
4514 int ret = 0;
4515
4516 if (hashleni < 0 || (size_t)hashleni > outlen) {
4517 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4518 ERR_R_INTERNAL_ERROR);
4519 goto err;
4520 }
4521
4522 ctx = EVP_MD_CTX_new();
4523 if (ctx == NULL)
4524 goto err;
4525
4526 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4527 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4528 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4529 ERR_R_INTERNAL_ERROR);
4530 goto err;
4531 }
4532
4533 *hashlen = hashleni;
4534
4535 ret = 1;
4536 err:
4537 EVP_MD_CTX_free(ctx);
4538 return ret;
4539}
4540
4541int SSL_session_reused(const SSL *s)
4542{
4543 return s->hit;
4544}
4545
4546int SSL_is_server(const SSL *s)
4547{
4548 return s->server;
4549}
4550
4551#if OPENSSL_API_COMPAT < 0x10100000L
4552void SSL_set_debug(SSL *s, int debug)
4553{
4554 /* Old function was do-nothing anyway... */
4555 (void)s;
4556 (void)debug;
4557}
4558#endif
4559
4560void SSL_set_security_level(SSL *s, int level)
4561{
4562 s->cert->sec_level = level;
4563}
4564
4565int SSL_get_security_level(const SSL *s)
4566{
4567 return s->cert->sec_level;
4568}
4569
4570void SSL_set_security_callback(SSL *s,
4571 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4572 int op, int bits, int nid,
4573 void *other, void *ex))
4574{
4575 s->cert->sec_cb = cb;
4576}
4577
4578int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4579 const SSL_CTX *ctx, int op,
4580 int bits, int nid, void *other,
4581 void *ex) {
4582 return s->cert->sec_cb;
4583}
4584
4585void SSL_set0_security_ex_data(SSL *s, void *ex)
4586{
4587 s->cert->sec_ex = ex;
4588}
4589
4590void *SSL_get0_security_ex_data(const SSL *s)
4591{
4592 return s->cert->sec_ex;
4593}
4594
4595void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4596{
4597 ctx->cert->sec_level = level;
4598}
4599
4600int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4601{
4602 return ctx->cert->sec_level;
4603}
4604
4605void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4606 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4607 int op, int bits, int nid,
4608 void *other, void *ex))
4609{
4610 ctx->cert->sec_cb = cb;
4611}
4612
4613int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4614 const SSL_CTX *ctx,
4615 int op, int bits,
4616 int nid,
4617 void *other,
4618 void *ex) {
4619 return ctx->cert->sec_cb;
4620}
4621
4622void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4623{
4624 ctx->cert->sec_ex = ex;
4625}
4626
4627void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4628{
4629 return ctx->cert->sec_ex;
4630}
4631
4632/*
4633 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4634 * can return unsigned long, instead of the generic long return value from the
4635 * control interface.
4636 */
4637unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4638{
4639 return ctx->options;
4640}
4641
4642unsigned long SSL_get_options(const SSL *s)
4643{
4644 return s->options;
4645}
4646
4647unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4648{
4649 return ctx->options |= op;
4650}
4651
4652unsigned long SSL_set_options(SSL *s, unsigned long op)
4653{
4654 return s->options |= op;
4655}
4656
4657unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4658{
4659 return ctx->options &= ~op;
4660}
4661
4662unsigned long SSL_clear_options(SSL *s, unsigned long op)
4663{
4664 return s->options &= ~op;
4665}
4666
4667STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4668{
4669 return s->verified_chain;
4670}
4671
4672IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4673
4674#ifndef OPENSSL_NO_CT
4675
4676/*
4677 * Moves SCTs from the |src| stack to the |dst| stack.
4678 * The source of each SCT will be set to |origin|.
4679 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4680 * the caller.
4681 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4682 */
4683static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4684 sct_source_t origin)
4685{
4686 int scts_moved = 0;
4687 SCT *sct = NULL;
4688
4689 if (*dst == NULL) {
4690 *dst = sk_SCT_new_null();
4691 if (*dst == NULL) {
4692 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4693 goto err;
4694 }
4695 }
4696
4697 while ((sct = sk_SCT_pop(src)) != NULL) {
4698 if (SCT_set_source(sct, origin) != 1)
4699 goto err;
4700
4701 if (sk_SCT_push(*dst, sct) <= 0)
4702 goto err;
4703 scts_moved += 1;
4704 }
4705
4706 return scts_moved;
4707 err:
4708 if (sct != NULL)
4709 sk_SCT_push(src, sct); /* Put the SCT back */
4710 return -1;
4711}
4712
4713/*
4714 * Look for data collected during ServerHello and parse if found.
4715 * Returns the number of SCTs extracted.
4716 */
4717static int ct_extract_tls_extension_scts(SSL *s)
4718{
4719 int scts_extracted = 0;
4720
4721 if (s->ext.scts != NULL) {
4722 const unsigned char *p = s->ext.scts;
4723 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4724
4725 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4726
4727 SCT_LIST_free(scts);
4728 }
4729
4730 return scts_extracted;
4731}
4732
4733/*
4734 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4735 * contains an SCT X509 extension. They will be stored in |s->scts|.
4736 * Returns:
4737 * - The number of SCTs extracted, assuming an OCSP response exists.
4738 * - 0 if no OCSP response exists or it contains no SCTs.
4739 * - A negative integer if an error occurs.
4740 */
4741static int ct_extract_ocsp_response_scts(SSL *s)
4742{
4743# ifndef OPENSSL_NO_OCSP
4744 int scts_extracted = 0;
4745 const unsigned char *p;
4746 OCSP_BASICRESP *br = NULL;
4747 OCSP_RESPONSE *rsp = NULL;
4748 STACK_OF(SCT) *scts = NULL;
4749 int i;
4750
4751 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4752 goto err;
4753
4754 p = s->ext.ocsp.resp;
4755 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4756 if (rsp == NULL)
4757 goto err;
4758
4759 br = OCSP_response_get1_basic(rsp);
4760 if (br == NULL)
4761 goto err;
4762
4763 for (i = 0; i < OCSP_resp_count(br); ++i) {
4764 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4765
4766 if (single == NULL)
4767 continue;
4768
4769 scts =
4770 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4771 scts_extracted =
4772 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4773 if (scts_extracted < 0)
4774 goto err;
4775 }
4776 err:
4777 SCT_LIST_free(scts);
4778 OCSP_BASICRESP_free(br);
4779 OCSP_RESPONSE_free(rsp);
4780 return scts_extracted;
4781# else
4782 /* Behave as if no OCSP response exists */
4783 return 0;
4784# endif
4785}
4786
4787/*
4788 * Attempts to extract SCTs from the peer certificate.
4789 * Return the number of SCTs extracted, or a negative integer if an error
4790 * occurs.
4791 */
4792static int ct_extract_x509v3_extension_scts(SSL *s)
4793{
4794 int scts_extracted = 0;
4795 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4796
4797 if (cert != NULL) {
4798 STACK_OF(SCT) *scts =
4799 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4800
4801 scts_extracted =
4802 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4803
4804 SCT_LIST_free(scts);
4805 }
4806
4807 return scts_extracted;
4808}
4809
4810/*
4811 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4812 * response (if it exists) and X509v3 extensions in the certificate.
4813 * Returns NULL if an error occurs.
4814 */
4815const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4816{
4817 if (!s->scts_parsed) {
4818 if (ct_extract_tls_extension_scts(s) < 0 ||
4819 ct_extract_ocsp_response_scts(s) < 0 ||
4820 ct_extract_x509v3_extension_scts(s) < 0)
4821 goto err;
4822
4823 s->scts_parsed = 1;
4824 }
4825 return s->scts;
4826 err:
4827 return NULL;
4828}
4829
4830static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4831 const STACK_OF(SCT) *scts, void *unused_arg)
4832{
4833 return 1;
4834}
4835
4836static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4837 const STACK_OF(SCT) *scts, void *unused_arg)
4838{
4839 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4840 int i;
4841
4842 for (i = 0; i < count; ++i) {
4843 SCT *sct = sk_SCT_value(scts, i);
4844 int status = SCT_get_validation_status(sct);
4845
4846 if (status == SCT_VALIDATION_STATUS_VALID)
4847 return 1;
4848 }
4849 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4850 return 0;
4851}
4852
4853int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4854 void *arg)
4855{
4856 /*
4857 * Since code exists that uses the custom extension handler for CT, look
4858 * for this and throw an error if they have already registered to use CT.
4859 */
4860 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4861 TLSEXT_TYPE_signed_certificate_timestamp))
4862 {
4863 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4864 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4865 return 0;
4866 }
4867
4868 if (callback != NULL) {
4869 /*
4870 * If we are validating CT, then we MUST accept SCTs served via OCSP
4871 */
4872 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4873 return 0;
4874 }
4875
4876 s->ct_validation_callback = callback;
4877 s->ct_validation_callback_arg = arg;
4878
4879 return 1;
4880}
4881
4882int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4883 ssl_ct_validation_cb callback, void *arg)
4884{
4885 /*
4886 * Since code exists that uses the custom extension handler for CT, look for
4887 * this and throw an error if they have already registered to use CT.
4888 */
4889 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4890 TLSEXT_TYPE_signed_certificate_timestamp))
4891 {
4892 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4893 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4894 return 0;
4895 }
4896
4897 ctx->ct_validation_callback = callback;
4898 ctx->ct_validation_callback_arg = arg;
4899 return 1;
4900}
4901
4902int SSL_ct_is_enabled(const SSL *s)
4903{
4904 return s->ct_validation_callback != NULL;
4905}
4906
4907int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4908{
4909 return ctx->ct_validation_callback != NULL;
4910}
4911
4912int ssl_validate_ct(SSL *s)
4913{
4914 int ret = 0;
4915 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4916 X509 *issuer;
4917 SSL_DANE *dane = &s->dane;
4918 CT_POLICY_EVAL_CTX *ctx = NULL;
4919 const STACK_OF(SCT) *scts;
4920
4921 /*
4922 * If no callback is set, the peer is anonymous, or its chain is invalid,
4923 * skip SCT validation - just return success. Applications that continue
4924 * handshakes without certificates, with unverified chains, or pinned leaf
4925 * certificates are outside the scope of the WebPKI and CT.
4926 *
4927 * The above exclusions notwithstanding the vast majority of peers will
4928 * have rather ordinary certificate chains validated by typical
4929 * applications that perform certificate verification and therefore will
4930 * process SCTs when enabled.
4931 */
4932 if (s->ct_validation_callback == NULL || cert == NULL ||
4933 s->verify_result != X509_V_OK ||
4934 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4935 return 1;
4936
4937 /*
4938 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4939 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4940 */
4941 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4942 switch (dane->mtlsa->usage) {
4943 case DANETLS_USAGE_DANE_TA:
4944 case DANETLS_USAGE_DANE_EE:
4945 return 1;
4946 }
4947 }
4948
4949 ctx = CT_POLICY_EVAL_CTX_new();
4950 if (ctx == NULL) {
4951 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
4952 ERR_R_MALLOC_FAILURE);
4953 goto end;
4954 }
4955
4956 issuer = sk_X509_value(s->verified_chain, 1);
4957 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4958 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4959 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4960 CT_POLICY_EVAL_CTX_set_time(
4961 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4962
4963 scts = SSL_get0_peer_scts(s);
4964
4965 /*
4966 * This function returns success (> 0) only when all the SCTs are valid, 0
4967 * when some are invalid, and < 0 on various internal errors (out of
4968 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4969 * reason to abort the handshake, that decision is up to the callback.
4970 * Therefore, we error out only in the unexpected case that the return
4971 * value is negative.
4972 *
4973 * XXX: One might well argue that the return value of this function is an
4974 * unfortunate design choice. Its job is only to determine the validation
4975 * status of each of the provided SCTs. So long as it correctly separates
4976 * the wheat from the chaff it should return success. Failure in this case
4977 * ought to correspond to an inability to carry out its duties.
4978 */
4979 if (SCT_LIST_validate(scts, ctx) < 0) {
4980 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4981 SSL_R_SCT_VERIFICATION_FAILED);
4982 goto end;
4983 }
4984
4985 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4986 if (ret < 0)
4987 ret = 0; /* This function returns 0 on failure */
4988 if (!ret)
4989 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4990 SSL_R_CALLBACK_FAILED);
4991
4992 end:
4993 CT_POLICY_EVAL_CTX_free(ctx);
4994 /*
4995 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4996 * failure return code here. Also the application may wish the complete
4997 * the handshake, and then disconnect cleanly at a higher layer, after
4998 * checking the verification status of the completed connection.
4999 *
5000 * We therefore force a certificate verification failure which will be
5001 * visible via SSL_get_verify_result() and cached as part of any resumed
5002 * session.
5003 *
5004 * Note: the permissive callback is for information gathering only, always
5005 * returns success, and does not affect verification status. Only the
5006 * strict callback or a custom application-specified callback can trigger
5007 * connection failure or record a verification error.
5008 */
5009 if (ret <= 0)
5010 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5011 return ret;
5012}
5013
5014int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5015{
5016 switch (validation_mode) {
5017 default:
5018 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5019 return 0;
5020 case SSL_CT_VALIDATION_PERMISSIVE:
5021 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5022 case SSL_CT_VALIDATION_STRICT:
5023 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5024 }
5025}
5026
5027int SSL_enable_ct(SSL *s, int validation_mode)
5028{
5029 switch (validation_mode) {
5030 default:
5031 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5032 return 0;
5033 case SSL_CT_VALIDATION_PERMISSIVE:
5034 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5035 case SSL_CT_VALIDATION_STRICT:
5036 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5037 }
5038}
5039
5040int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5041{
5042 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5043}
5044
5045int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5046{
5047 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5048}
5049
5050void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5051{
5052 CTLOG_STORE_free(ctx->ctlog_store);
5053 ctx->ctlog_store = logs;
5054}
5055
5056const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5057{
5058 return ctx->ctlog_store;
5059}
5060
5061#endif /* OPENSSL_NO_CT */
5062
5063void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5064 void *arg)
5065{
5066 c->client_hello_cb = cb;
5067 c->client_hello_cb_arg = arg;
5068}
5069
5070int SSL_client_hello_isv2(SSL *s)
5071{
5072 if (s->clienthello == NULL)
5073 return 0;
5074 return s->clienthello->isv2;
5075}
5076
5077unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5078{
5079 if (s->clienthello == NULL)
5080 return 0;
5081 return s->clienthello->legacy_version;
5082}
5083
5084size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5085{
5086 if (s->clienthello == NULL)
5087 return 0;
5088 if (out != NULL)
5089 *out = s->clienthello->random;
5090 return SSL3_RANDOM_SIZE;
5091}
5092
5093size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5094{
5095 if (s->clienthello == NULL)
5096 return 0;
5097 if (out != NULL)
5098 *out = s->clienthello->session_id;
5099 return s->clienthello->session_id_len;
5100}
5101
5102size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5103{
5104 if (s->clienthello == NULL)
5105 return 0;
5106 if (out != NULL)
5107 *out = PACKET_data(&s->clienthello->ciphersuites);
5108 return PACKET_remaining(&s->clienthello->ciphersuites);
5109}
5110
5111size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5112{
5113 if (s->clienthello == NULL)
5114 return 0;
5115 if (out != NULL)
5116 *out = s->clienthello->compressions;
5117 return s->clienthello->compressions_len;
5118}
5119
5120int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5121{
5122 RAW_EXTENSION *ext;
5123 int *present;
5124 size_t num = 0, i;
5125
5126 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5127 return 0;
5128 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5129 ext = s->clienthello->pre_proc_exts + i;
5130 if (ext->present)
5131 num++;
5132 }
5133 if (num == 0) {
5134 *out = NULL;
5135 *outlen = 0;
5136 return 1;
5137 }
5138 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5139 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5140 ERR_R_MALLOC_FAILURE);
5141 return 0;
5142 }
5143 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5144 ext = s->clienthello->pre_proc_exts + i;
5145 if (ext->present) {
5146 if (ext->received_order >= num)
5147 goto err;
5148 present[ext->received_order] = ext->type;
5149 }
5150 }
5151 *out = present;
5152 *outlen = num;
5153 return 1;
5154 err:
5155 OPENSSL_free(present);
5156 return 0;
5157}
5158
5159int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5160 size_t *outlen)
5161{
5162 size_t i;
5163 RAW_EXTENSION *r;
5164
5165 if (s->clienthello == NULL)
5166 return 0;
5167 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5168 r = s->clienthello->pre_proc_exts + i;
5169 if (r->present && r->type == type) {
5170 if (out != NULL)
5171 *out = PACKET_data(&r->data);
5172 if (outlen != NULL)
5173 *outlen = PACKET_remaining(&r->data);
5174 return 1;
5175 }
5176 }
5177 return 0;
5178}
5179
5180int SSL_free_buffers(SSL *ssl)
5181{
5182 RECORD_LAYER *rl = &ssl->rlayer;
5183
5184 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5185 return 0;
5186
5187 RECORD_LAYER_release(rl);
5188 return 1;
5189}
5190
5191int SSL_alloc_buffers(SSL *ssl)
5192{
5193 return ssl3_setup_buffers(ssl);
5194}
5195
5196void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5197{
5198 ctx->keylog_callback = cb;
5199}
5200
5201SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5202{
5203 return ctx->keylog_callback;
5204}
5205
5206static int nss_keylog_int(const char *prefix,
5207 SSL *ssl,
5208 const uint8_t *parameter_1,
5209 size_t parameter_1_len,
5210 const uint8_t *parameter_2,
5211 size_t parameter_2_len)
5212{
5213 char *out = NULL;
5214 char *cursor = NULL;
5215 size_t out_len = 0;
5216 size_t i;
5217 size_t prefix_len;
5218
5219 if (ssl->ctx->keylog_callback == NULL)
5220 return 1;
5221
5222 /*
5223 * Our output buffer will contain the following strings, rendered with
5224 * space characters in between, terminated by a NULL character: first the
5225 * prefix, then the first parameter, then the second parameter. The
5226 * meaning of each parameter depends on the specific key material being
5227 * logged. Note that the first and second parameters are encoded in
5228 * hexadecimal, so we need a buffer that is twice their lengths.
5229 */
5230 prefix_len = strlen(prefix);
5231 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5232 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5233 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5234 ERR_R_MALLOC_FAILURE);
5235 return 0;
5236 }
5237
5238 strcpy(cursor, prefix);
5239 cursor += prefix_len;
5240 *cursor++ = ' ';
5241
5242 for (i = 0; i < parameter_1_len; i++) {
5243 sprintf(cursor, "%02x", parameter_1[i]);
5244 cursor += 2;
5245 }
5246 *cursor++ = ' ';
5247
5248 for (i = 0; i < parameter_2_len; i++) {
5249 sprintf(cursor, "%02x", parameter_2[i]);
5250 cursor += 2;
5251 }
5252 *cursor = '\0';
5253
5254 ssl->ctx->keylog_callback(ssl, (const char *)out);
5255 OPENSSL_clear_free(out, out_len);
5256 return 1;
5257
5258}
5259
5260int ssl_log_rsa_client_key_exchange(SSL *ssl,
5261 const uint8_t *encrypted_premaster,
5262 size_t encrypted_premaster_len,
5263 const uint8_t *premaster,
5264 size_t premaster_len)
5265{
5266 if (encrypted_premaster_len < 8) {
5267 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5268 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5269 return 0;
5270 }
5271
5272 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5273 return nss_keylog_int("RSA",
5274 ssl,
5275 encrypted_premaster,
5276 8,
5277 premaster,
5278 premaster_len);
5279}
5280
5281int ssl_log_secret(SSL *ssl,
5282 const char *label,
5283 const uint8_t *secret,
5284 size_t secret_len)
5285{
5286 return nss_keylog_int(label,
5287 ssl,
5288 ssl->s3->client_random,
5289 SSL3_RANDOM_SIZE,
5290 secret,
5291 secret_len);
5292}
5293
5294#define SSLV2_CIPHER_LEN 3
5295
5296int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5297{
5298 int n;
5299
5300 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5301
5302 if (PACKET_remaining(cipher_suites) == 0) {
5303 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5304 SSL_R_NO_CIPHERS_SPECIFIED);
5305 return 0;
5306 }
5307
5308 if (PACKET_remaining(cipher_suites) % n != 0) {
5309 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5310 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5311 return 0;
5312 }
5313
5314 OPENSSL_free(s->s3->tmp.ciphers_raw);
5315 s->s3->tmp.ciphers_raw = NULL;
5316 s->s3->tmp.ciphers_rawlen = 0;
5317
5318 if (sslv2format) {
5319 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5320 PACKET sslv2ciphers = *cipher_suites;
5321 unsigned int leadbyte;
5322 unsigned char *raw;
5323
5324 /*
5325 * We store the raw ciphers list in SSLv3+ format so we need to do some
5326 * preprocessing to convert the list first. If there are any SSLv2 only
5327 * ciphersuites with a non-zero leading byte then we are going to
5328 * slightly over allocate because we won't store those. But that isn't a
5329 * problem.
5330 */
5331 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5332 s->s3->tmp.ciphers_raw = raw;
5333 if (raw == NULL) {
5334 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5335 ERR_R_MALLOC_FAILURE);
5336 return 0;
5337 }
5338 for (s->s3->tmp.ciphers_rawlen = 0;
5339 PACKET_remaining(&sslv2ciphers) > 0;
5340 raw += TLS_CIPHER_LEN) {
5341 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5342 || (leadbyte == 0
5343 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5344 TLS_CIPHER_LEN))
5345 || (leadbyte != 0
5346 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5347 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5348 SSL_R_BAD_PACKET);
5349 OPENSSL_free(s->s3->tmp.ciphers_raw);
5350 s->s3->tmp.ciphers_raw = NULL;
5351 s->s3->tmp.ciphers_rawlen = 0;
5352 return 0;
5353 }
5354 if (leadbyte == 0)
5355 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5356 }
5357 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5358 &s->s3->tmp.ciphers_rawlen)) {
5359 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5360 ERR_R_INTERNAL_ERROR);
5361 return 0;
5362 }
5363 return 1;
5364}
5365
5366int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5367 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5368 STACK_OF(SSL_CIPHER) **scsvs)
5369{
5370 PACKET pkt;
5371
5372 if (!PACKET_buf_init(&pkt, bytes, len))
5373 return 0;
5374 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5375}
5376
5377int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5378 STACK_OF(SSL_CIPHER) **skp,
5379 STACK_OF(SSL_CIPHER) **scsvs_out,
5380 int sslv2format, int fatal)
5381{
5382 const SSL_CIPHER *c;
5383 STACK_OF(SSL_CIPHER) *sk = NULL;
5384 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5385 int n;
5386 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5387 unsigned char cipher[SSLV2_CIPHER_LEN];
5388
5389 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5390
5391 if (PACKET_remaining(cipher_suites) == 0) {
5392 if (fatal)
5393 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5394 SSL_R_NO_CIPHERS_SPECIFIED);
5395 else
5396 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5397 return 0;
5398 }
5399
5400 if (PACKET_remaining(cipher_suites) % n != 0) {
5401 if (fatal)
5402 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5403 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5404 else
5405 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5406 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5407 return 0;
5408 }
5409
5410 sk = sk_SSL_CIPHER_new_null();
5411 scsvs = sk_SSL_CIPHER_new_null();
5412 if (sk == NULL || scsvs == NULL) {
5413 if (fatal)
5414 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5415 ERR_R_MALLOC_FAILURE);
5416 else
5417 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5418 goto err;
5419 }
5420
5421 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5422 /*
5423 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5424 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5425 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5426 */
5427 if (sslv2format && cipher[0] != '\0')
5428 continue;
5429
5430 /* For SSLv2-compat, ignore leading 0-byte. */
5431 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5432 if (c != NULL) {
5433 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5434 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5435 if (fatal)
5436 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5437 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5438 else
5439 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5440 goto err;
5441 }
5442 }
5443 }
5444 if (PACKET_remaining(cipher_suites) > 0) {
5445 if (fatal)
5446 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5447 SSL_R_BAD_LENGTH);
5448 else
5449 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5450 goto err;
5451 }
5452
5453 if (skp != NULL)
5454 *skp = sk;
5455 else
5456 sk_SSL_CIPHER_free(sk);
5457 if (scsvs_out != NULL)
5458 *scsvs_out = scsvs;
5459 else
5460 sk_SSL_CIPHER_free(scsvs);
5461 return 1;
5462 err:
5463 sk_SSL_CIPHER_free(sk);
5464 sk_SSL_CIPHER_free(scsvs);
5465 return 0;
5466}
5467
5468int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5469{
5470 ctx->max_early_data = max_early_data;
5471
5472 return 1;
5473}
5474
5475uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5476{
5477 return ctx->max_early_data;
5478}
5479
5480int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5481{
5482 s->max_early_data = max_early_data;
5483
5484 return 1;
5485}
5486
5487uint32_t SSL_get_max_early_data(const SSL *s)
5488{
5489 return s->max_early_data;
5490}
5491
5492int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5493{
5494 ctx->recv_max_early_data = recv_max_early_data;
5495
5496 return 1;
5497}
5498
5499uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5500{
5501 return ctx->recv_max_early_data;
5502}
5503
5504int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5505{
5506 s->recv_max_early_data = recv_max_early_data;
5507
5508 return 1;
5509}
5510
5511uint32_t SSL_get_recv_max_early_data(const SSL *s)
5512{
5513 return s->recv_max_early_data;
5514}
5515
5516__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5517{
5518 /* Return any active Max Fragment Len extension */
5519 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5520 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5521
5522 /* return current SSL connection setting */
5523 return ssl->max_send_fragment;
5524}
5525
5526__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5527{
5528 /* Return a value regarding an active Max Fragment Len extension */
5529 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5530 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5531 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5532
5533 /* else limit |split_send_fragment| to current |max_send_fragment| */
5534 if (ssl->split_send_fragment > ssl->max_send_fragment)
5535 return ssl->max_send_fragment;
5536
5537 /* return current SSL connection setting */
5538 return ssl->split_send_fragment;
5539}
5540
5541int SSL_stateless(SSL *s)
5542{
5543 int ret;
5544
5545 /* Ensure there is no state left over from a previous invocation */
5546 if (!SSL_clear(s))
5547 return 0;
5548
5549 ERR_clear_error();
5550
5551 s->s3->flags |= TLS1_FLAGS_STATELESS;
5552 ret = SSL_accept(s);
5553 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5554
5555 if (ret > 0 && s->ext.cookieok)
5556 return 1;
5557
5558 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5559 return 0;
5560
5561 return -1;
5562}
5563
5564void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5565{
5566 ctx->pha_enabled = val;
5567}
5568
5569void SSL_set_post_handshake_auth(SSL *ssl, int val)
5570{
5571 ssl->pha_enabled = val;
5572}
5573
5574int SSL_verify_client_post_handshake(SSL *ssl)
5575{
5576 if (!SSL_IS_TLS13(ssl)) {
5577 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5578 return 0;
5579 }
5580 if (!ssl->server) {
5581 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5582 return 0;
5583 }
5584
5585 if (!SSL_is_init_finished(ssl)) {
5586 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5587 return 0;
5588 }
5589
5590 switch (ssl->post_handshake_auth) {
5591 case SSL_PHA_NONE:
5592 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5593 return 0;
5594 default:
5595 case SSL_PHA_EXT_SENT:
5596 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5597 return 0;
5598 case SSL_PHA_EXT_RECEIVED:
5599 break;
5600 case SSL_PHA_REQUEST_PENDING:
5601 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5602 return 0;
5603 case SSL_PHA_REQUESTED:
5604 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5605 return 0;
5606 }
5607
5608 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5609
5610 /* checks verify_mode and algorithm_auth */
5611 if (!send_certificate_request(ssl)) {
5612 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5613 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5614 return 0;
5615 }
5616
5617 ossl_statem_set_in_init(ssl, 1);
5618 return 1;
5619}
5620
5621int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5622 SSL_CTX_generate_session_ticket_fn gen_cb,
5623 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5624 void *arg)
5625{
5626 ctx->generate_ticket_cb = gen_cb;
5627 ctx->decrypt_ticket_cb = dec_cb;
5628 ctx->ticket_cb_data = arg;
5629 return 1;
5630}
5631
5632void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5633 SSL_allow_early_data_cb_fn cb,
5634 void *arg)
5635{
5636 ctx->allow_early_data_cb = cb;
5637 ctx->allow_early_data_cb_data = arg;
5638}
5639
5640void SSL_set_allow_early_data_cb(SSL *s,
5641 SSL_allow_early_data_cb_fn cb,
5642 void *arg)
5643{
5644 s->allow_early_data_cb = cb;
5645 s->allow_early_data_cb_data = arg;
5646}
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