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source: vbox/trunk/src/libs/openssl-1.1.1h/ssl/ssl_lib.c@ 86719

Last change on this file since 86719 was 86560, checked in by vboxsync, 4 years ago

openssl-1.1.1h: Applied our OpenSSL changes to 1.1.1h. Didn't check te build. bugref:9847
File size: 156.7 KB
Line 
1/*
2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
5 *
6 * Licensed under the OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
10 */
11
12#include <stdio.h>
13#include "ssl_local.h"
14#include <openssl/objects.h>
15#include <openssl/x509v3.h>
16#include <openssl/rand.h>
17#include <openssl/rand_drbg.h>
18#include <openssl/ocsp.h>
19#include <openssl/dh.h>
20#include <openssl/engine.h>
21#include <openssl/async.h>
22#include <openssl/ct.h>
23#include "internal/cryptlib.h"
24#include "internal/refcount.h"
25
26const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
27
28static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
29{
30 (void)r;
31 (void)s;
32 (void)t;
33 return ssl_undefined_function(ssl);
34}
35
36static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
37 int t)
38{
39 (void)r;
40 (void)s;
41 (void)t;
42 return ssl_undefined_function(ssl);
43}
44
45static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
46 unsigned char *s, size_t t, size_t *u)
47{
48 (void)r;
49 (void)s;
50 (void)t;
51 (void)u;
52 return ssl_undefined_function(ssl);
53}
54
55static int ssl_undefined_function_4(SSL *ssl, int r)
56{
57 (void)r;
58 return ssl_undefined_function(ssl);
59}
60
61static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
62 unsigned char *t)
63{
64 (void)r;
65 (void)s;
66 (void)t;
67 return ssl_undefined_function(ssl);
68}
69
70static int ssl_undefined_function_6(int r)
71{
72 (void)r;
73 return ssl_undefined_function(NULL);
74}
75
76static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
77 const char *t, size_t u,
78 const unsigned char *v, size_t w, int x)
79{
80 (void)r;
81 (void)s;
82 (void)t;
83 (void)u;
84 (void)v;
85 (void)w;
86 (void)x;
87 return ssl_undefined_function(ssl);
88}
89
90SSL3_ENC_METHOD ssl3_undef_enc_method = {
91 ssl_undefined_function_1,
92 ssl_undefined_function_2,
93 ssl_undefined_function,
94 ssl_undefined_function_3,
95 ssl_undefined_function_4,
96 ssl_undefined_function_5,
97 NULL, /* client_finished_label */
98 0, /* client_finished_label_len */
99 NULL, /* server_finished_label */
100 0, /* server_finished_label_len */
101 ssl_undefined_function_6,
102 ssl_undefined_function_7,
103};
104
105struct ssl_async_args {
106 SSL *s;
107 void *buf;
108 size_t num;
109 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
110 union {
111 int (*func_read) (SSL *, void *, size_t, size_t *);
112 int (*func_write) (SSL *, const void *, size_t, size_t *);
113 int (*func_other) (SSL *);
114 } f;
115};
116
117static const struct {
118 uint8_t mtype;
119 uint8_t ord;
120 int nid;
121} dane_mds[] = {
122 {
123 DANETLS_MATCHING_FULL, 0, NID_undef
124 },
125 {
126 DANETLS_MATCHING_2256, 1, NID_sha256
127 },
128 {
129 DANETLS_MATCHING_2512, 2, NID_sha512
130 },
131};
132
133static int dane_ctx_enable(struct dane_ctx_st *dctx)
134{
135 const EVP_MD **mdevp;
136 uint8_t *mdord;
137 uint8_t mdmax = DANETLS_MATCHING_LAST;
138 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
139 size_t i;
140
141 if (dctx->mdevp != NULL)
142 return 1;
143
144 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
145 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
146
147 if (mdord == NULL || mdevp == NULL) {
148 OPENSSL_free(mdord);
149 OPENSSL_free(mdevp);
150 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
151 return 0;
152 }
153
154 /* Install default entries */
155 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
156 const EVP_MD *md;
157
158 if (dane_mds[i].nid == NID_undef ||
159 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
160 continue;
161 mdevp[dane_mds[i].mtype] = md;
162 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
163 }
164
165 dctx->mdevp = mdevp;
166 dctx->mdord = mdord;
167 dctx->mdmax = mdmax;
168
169 return 1;
170}
171
172static void dane_ctx_final(struct dane_ctx_st *dctx)
173{
174 OPENSSL_free(dctx->mdevp);
175 dctx->mdevp = NULL;
176
177 OPENSSL_free(dctx->mdord);
178 dctx->mdord = NULL;
179 dctx->mdmax = 0;
180}
181
182static void tlsa_free(danetls_record *t)
183{
184 if (t == NULL)
185 return;
186 OPENSSL_free(t->data);
187 EVP_PKEY_free(t->spki);
188 OPENSSL_free(t);
189}
190
191static void dane_final(SSL_DANE *dane)
192{
193 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
194 dane->trecs = NULL;
195
196 sk_X509_pop_free(dane->certs, X509_free);
197 dane->certs = NULL;
198
199 X509_free(dane->mcert);
200 dane->mcert = NULL;
201 dane->mtlsa = NULL;
202 dane->mdpth = -1;
203 dane->pdpth = -1;
204}
205
206/*
207 * dane_copy - Copy dane configuration, sans verification state.
208 */
209static int ssl_dane_dup(SSL *to, SSL *from)
210{
211 int num;
212 int i;
213
214 if (!DANETLS_ENABLED(&from->dane))
215 return 1;
216
217 num = sk_danetls_record_num(from->dane.trecs);
218 dane_final(&to->dane);
219 to->dane.flags = from->dane.flags;
220 to->dane.dctx = &to->ctx->dane;
221 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
222
223 if (to->dane.trecs == NULL) {
224 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
225 return 0;
226 }
227
228 for (i = 0; i < num; ++i) {
229 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
230
231 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
232 t->data, t->dlen) <= 0)
233 return 0;
234 }
235 return 1;
236}
237
238static int dane_mtype_set(struct dane_ctx_st *dctx,
239 const EVP_MD *md, uint8_t mtype, uint8_t ord)
240{
241 int i;
242
243 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
244 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
245 return 0;
246 }
247
248 if (mtype > dctx->mdmax) {
249 const EVP_MD **mdevp;
250 uint8_t *mdord;
251 int n = ((int)mtype) + 1;
252
253 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
254 if (mdevp == NULL) {
255 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
256 return -1;
257 }
258 dctx->mdevp = mdevp;
259
260 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
261 if (mdord == NULL) {
262 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
263 return -1;
264 }
265 dctx->mdord = mdord;
266
267 /* Zero-fill any gaps */
268 for (i = dctx->mdmax + 1; i < mtype; ++i) {
269 mdevp[i] = NULL;
270 mdord[i] = 0;
271 }
272
273 dctx->mdmax = mtype;
274 }
275
276 dctx->mdevp[mtype] = md;
277 /* Coerce ordinal of disabled matching types to 0 */
278 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
279
280 return 1;
281}
282
283static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
284{
285 if (mtype > dane->dctx->mdmax)
286 return NULL;
287 return dane->dctx->mdevp[mtype];
288}
289
290static int dane_tlsa_add(SSL_DANE *dane,
291 uint8_t usage,
292 uint8_t selector,
293 uint8_t mtype, unsigned const char *data, size_t dlen)
294{
295 danetls_record *t;
296 const EVP_MD *md = NULL;
297 int ilen = (int)dlen;
298 int i;
299 int num;
300
301 if (dane->trecs == NULL) {
302 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
303 return -1;
304 }
305
306 if (ilen < 0 || dlen != (size_t)ilen) {
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
308 return 0;
309 }
310
311 if (usage > DANETLS_USAGE_LAST) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
313 return 0;
314 }
315
316 if (selector > DANETLS_SELECTOR_LAST) {
317 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
318 return 0;
319 }
320
321 if (mtype != DANETLS_MATCHING_FULL) {
322 md = tlsa_md_get(dane, mtype);
323 if (md == NULL) {
324 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
325 return 0;
326 }
327 }
328
329 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
330 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
331 return 0;
332 }
333 if (!data) {
334 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
335 return 0;
336 }
337
338 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
340 return -1;
341 }
342
343 t->usage = usage;
344 t->selector = selector;
345 t->mtype = mtype;
346 t->data = OPENSSL_malloc(dlen);
347 if (t->data == NULL) {
348 tlsa_free(t);
349 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
350 return -1;
351 }
352 memcpy(t->data, data, dlen);
353 t->dlen = dlen;
354
355 /* Validate and cache full certificate or public key */
356 if (mtype == DANETLS_MATCHING_FULL) {
357 const unsigned char *p = data;
358 X509 *cert = NULL;
359 EVP_PKEY *pkey = NULL;
360
361 switch (selector) {
362 case DANETLS_SELECTOR_CERT:
363 if (!d2i_X509(&cert, &p, ilen) || p < data ||
364 dlen != (size_t)(p - data)) {
365 tlsa_free(t);
366 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
367 return 0;
368 }
369 if (X509_get0_pubkey(cert) == NULL) {
370 tlsa_free(t);
371 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
372 return 0;
373 }
374
375 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
376 X509_free(cert);
377 break;
378 }
379
380 /*
381 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
382 * records that contain full certificates of trust-anchors that are
383 * not present in the wire chain. For usage PKIX-TA(0), we augment
384 * the chain with untrusted Full(0) certificates from DNS, in case
385 * they are missing from the chain.
386 */
387 if ((dane->certs == NULL &&
388 (dane->certs = sk_X509_new_null()) == NULL) ||
389 !sk_X509_push(dane->certs, cert)) {
390 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
391 X509_free(cert);
392 tlsa_free(t);
393 return -1;
394 }
395 break;
396
397 case DANETLS_SELECTOR_SPKI:
398 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
399 dlen != (size_t)(p - data)) {
400 tlsa_free(t);
401 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
402 return 0;
403 }
404
405 /*
406 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
407 * records that contain full bare keys of trust-anchors that are
408 * not present in the wire chain.
409 */
410 if (usage == DANETLS_USAGE_DANE_TA)
411 t->spki = pkey;
412 else
413 EVP_PKEY_free(pkey);
414 break;
415 }
416 }
417
418 /*-
419 * Find the right insertion point for the new record.
420 *
421 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
422 * they can be processed first, as they require no chain building, and no
423 * expiration or hostname checks. Because DANE-EE(3) is numerically
424 * largest, this is accomplished via descending sort by "usage".
425 *
426 * We also sort in descending order by matching ordinal to simplify
427 * the implementation of digest agility in the verification code.
428 *
429 * The choice of order for the selector is not significant, so we
430 * use the same descending order for consistency.
431 */
432 num = sk_danetls_record_num(dane->trecs);
433 for (i = 0; i < num; ++i) {
434 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
435
436 if (rec->usage > usage)
437 continue;
438 if (rec->usage < usage)
439 break;
440 if (rec->selector > selector)
441 continue;
442 if (rec->selector < selector)
443 break;
444 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
445 continue;
446 break;
447 }
448
449 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
450 tlsa_free(t);
451 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
452 return -1;
453 }
454 dane->umask |= DANETLS_USAGE_BIT(usage);
455
456 return 1;
457}
458
459/*
460 * Return 0 if there is only one version configured and it was disabled
461 * at configure time. Return 1 otherwise.
462 */
463static int ssl_check_allowed_versions(int min_version, int max_version)
464{
465 int minisdtls = 0, maxisdtls = 0;
466
467 /* Figure out if we're doing DTLS versions or TLS versions */
468 if (min_version == DTLS1_BAD_VER
469 || min_version >> 8 == DTLS1_VERSION_MAJOR)
470 minisdtls = 1;
471 if (max_version == DTLS1_BAD_VER
472 || max_version >> 8 == DTLS1_VERSION_MAJOR)
473 maxisdtls = 1;
474 /* A wildcard version of 0 could be DTLS or TLS. */
475 if ((minisdtls && !maxisdtls && max_version != 0)
476 || (maxisdtls && !minisdtls && min_version != 0)) {
477 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
478 return 0;
479 }
480
481 if (minisdtls || maxisdtls) {
482 /* Do DTLS version checks. */
483 if (min_version == 0)
484 /* Ignore DTLS1_BAD_VER */
485 min_version = DTLS1_VERSION;
486 if (max_version == 0)
487 max_version = DTLS1_2_VERSION;
488#ifdef OPENSSL_NO_DTLS1_2
489 if (max_version == DTLS1_2_VERSION)
490 max_version = DTLS1_VERSION;
491#endif
492#ifdef OPENSSL_NO_DTLS1
493 if (min_version == DTLS1_VERSION)
494 min_version = DTLS1_2_VERSION;
495#endif
496 /* Done massaging versions; do the check. */
497 if (0
498#ifdef OPENSSL_NO_DTLS1
499 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
500 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
501#endif
502#ifdef OPENSSL_NO_DTLS1_2
503 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
504 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
505#endif
506 )
507 return 0;
508 } else {
509 /* Regular TLS version checks. */
510 if (min_version == 0)
511 min_version = SSL3_VERSION;
512 if (max_version == 0)
513 max_version = TLS1_3_VERSION;
514#ifdef OPENSSL_NO_TLS1_3
515 if (max_version == TLS1_3_VERSION)
516 max_version = TLS1_2_VERSION;
517#endif
518#ifdef OPENSSL_NO_TLS1_2
519 if (max_version == TLS1_2_VERSION)
520 max_version = TLS1_1_VERSION;
521#endif
522#ifdef OPENSSL_NO_TLS1_1
523 if (max_version == TLS1_1_VERSION)
524 max_version = TLS1_VERSION;
525#endif
526#ifdef OPENSSL_NO_TLS1
527 if (max_version == TLS1_VERSION)
528 max_version = SSL3_VERSION;
529#endif
530#ifdef OPENSSL_NO_SSL3
531 if (min_version == SSL3_VERSION)
532 min_version = TLS1_VERSION;
533#endif
534#ifdef OPENSSL_NO_TLS1
535 if (min_version == TLS1_VERSION)
536 min_version = TLS1_1_VERSION;
537#endif
538#ifdef OPENSSL_NO_TLS1_1
539 if (min_version == TLS1_1_VERSION)
540 min_version = TLS1_2_VERSION;
541#endif
542#ifdef OPENSSL_NO_TLS1_2
543 if (min_version == TLS1_2_VERSION)
544 min_version = TLS1_3_VERSION;
545#endif
546 /* Done massaging versions; do the check. */
547 if (0
548#ifdef OPENSSL_NO_SSL3
549 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
550#endif
551#ifdef OPENSSL_NO_TLS1
552 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
553#endif
554#ifdef OPENSSL_NO_TLS1_1
555 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
556#endif
557#ifdef OPENSSL_NO_TLS1_2
558 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
559#endif
560#ifdef OPENSSL_NO_TLS1_3
561 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
562#endif
563 )
564 return 0;
565 }
566 return 1;
567}
568
569static void clear_ciphers(SSL *s)
570{
571 /* clear the current cipher */
572 ssl_clear_cipher_ctx(s);
573 ssl_clear_hash_ctx(&s->read_hash);
574 ssl_clear_hash_ctx(&s->write_hash);
575}
576
577int SSL_clear(SSL *s)
578{
579 if (s->method == NULL) {
580 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
581 return 0;
582 }
583
584 if (ssl_clear_bad_session(s)) {
585 SSL_SESSION_free(s->session);
586 s->session = NULL;
587 }
588 SSL_SESSION_free(s->psksession);
589 s->psksession = NULL;
590 OPENSSL_free(s->psksession_id);
591 s->psksession_id = NULL;
592 s->psksession_id_len = 0;
593 s->hello_retry_request = 0;
594 s->sent_tickets = 0;
595
596 s->error = 0;
597 s->hit = 0;
598 s->shutdown = 0;
599
600 if (s->renegotiate) {
601 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
602 return 0;
603 }
604
605 ossl_statem_clear(s);
606
607 s->version = s->method->version;
608 s->client_version = s->version;
609 s->rwstate = SSL_NOTHING;
610
611 BUF_MEM_free(s->init_buf);
612 s->init_buf = NULL;
613 clear_ciphers(s);
614 s->first_packet = 0;
615
616 s->key_update = SSL_KEY_UPDATE_NONE;
617
618 EVP_MD_CTX_free(s->pha_dgst);
619 s->pha_dgst = NULL;
620
621 /* Reset DANE verification result state */
622 s->dane.mdpth = -1;
623 s->dane.pdpth = -1;
624 X509_free(s->dane.mcert);
625 s->dane.mcert = NULL;
626 s->dane.mtlsa = NULL;
627
628 /* Clear the verification result peername */
629 X509_VERIFY_PARAM_move_peername(s->param, NULL);
630
631 /* Clear any shared connection state */
632 OPENSSL_free(s->shared_sigalgs);
633 s->shared_sigalgs = NULL;
634 s->shared_sigalgslen = 0;
635
636 /*
637 * Check to see if we were changed into a different method, if so, revert
638 * back.
639 */
640 if (s->method != s->ctx->method) {
641 s->method->ssl_free(s);
642 s->method = s->ctx->method;
643 if (!s->method->ssl_new(s))
644 return 0;
645 } else {
646 if (!s->method->ssl_clear(s))
647 return 0;
648 }
649
650 RECORD_LAYER_clear(&s->rlayer);
651
652 return 1;
653}
654
655/** Used to change an SSL_CTXs default SSL method type */
656int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
657{
658 STACK_OF(SSL_CIPHER) *sk;
659
660 ctx->method = meth;
661
662 if (!SSL_CTX_set_ciphersuites(ctx, TLS_DEFAULT_CIPHERSUITES)) {
663 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
664 return 0;
665 }
666 sk = ssl_create_cipher_list(ctx->method,
667 ctx->tls13_ciphersuites,
668 &(ctx->cipher_list),
669 &(ctx->cipher_list_by_id),
670 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
671 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
672 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
673 return 0;
674 }
675 return 1;
676}
677
678SSL *SSL_new(SSL_CTX *ctx)
679{
680 SSL *s;
681
682 if (ctx == NULL) {
683 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
684 return NULL;
685 }
686 if (ctx->method == NULL) {
687 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
688 return NULL;
689 }
690
691 s = OPENSSL_zalloc(sizeof(*s));
692 if (s == NULL)
693 goto err;
694
695 s->references = 1;
696 s->lock = CRYPTO_THREAD_lock_new();
697 if (s->lock == NULL) {
698 OPENSSL_free(s);
699 s = NULL;
700 goto err;
701 }
702
703 RECORD_LAYER_init(&s->rlayer, s);
704
705 s->options = ctx->options;
706 s->dane.flags = ctx->dane.flags;
707 s->min_proto_version = ctx->min_proto_version;
708 s->max_proto_version = ctx->max_proto_version;
709 s->mode = ctx->mode;
710 s->max_cert_list = ctx->max_cert_list;
711 s->max_early_data = ctx->max_early_data;
712 s->recv_max_early_data = ctx->recv_max_early_data;
713 s->num_tickets = ctx->num_tickets;
714 s->pha_enabled = ctx->pha_enabled;
715
716 /* Shallow copy of the ciphersuites stack */
717 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
718 if (s->tls13_ciphersuites == NULL)
719 goto err;
720
721 /*
722 * Earlier library versions used to copy the pointer to the CERT, not
723 * its contents; only when setting new parameters for the per-SSL
724 * copy, ssl_cert_new would be called (and the direct reference to
725 * the per-SSL_CTX settings would be lost, but those still were
726 * indirectly accessed for various purposes, and for that reason they
727 * used to be known as s->ctx->default_cert). Now we don't look at the
728 * SSL_CTX's CERT after having duplicated it once.
729 */
730 s->cert = ssl_cert_dup(ctx->cert);
731 if (s->cert == NULL)
732 goto err;
733
734 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
735 s->msg_callback = ctx->msg_callback;
736 s->msg_callback_arg = ctx->msg_callback_arg;
737 s->verify_mode = ctx->verify_mode;
738 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
739 s->record_padding_cb = ctx->record_padding_cb;
740 s->record_padding_arg = ctx->record_padding_arg;
741 s->block_padding = ctx->block_padding;
742 s->sid_ctx_length = ctx->sid_ctx_length;
743 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
744 goto err;
745 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
746 s->verify_callback = ctx->default_verify_callback;
747 s->generate_session_id = ctx->generate_session_id;
748
749 s->param = X509_VERIFY_PARAM_new();
750 if (s->param == NULL)
751 goto err;
752 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
753 s->quiet_shutdown = ctx->quiet_shutdown;
754
755 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
756 s->max_send_fragment = ctx->max_send_fragment;
757 s->split_send_fragment = ctx->split_send_fragment;
758 s->max_pipelines = ctx->max_pipelines;
759 if (s->max_pipelines > 1)
760 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
761 if (ctx->default_read_buf_len > 0)
762 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
763
764 SSL_CTX_up_ref(ctx);
765 s->ctx = ctx;
766 s->ext.debug_cb = 0;
767 s->ext.debug_arg = NULL;
768 s->ext.ticket_expected = 0;
769 s->ext.status_type = ctx->ext.status_type;
770 s->ext.status_expected = 0;
771 s->ext.ocsp.ids = NULL;
772 s->ext.ocsp.exts = NULL;
773 s->ext.ocsp.resp = NULL;
774 s->ext.ocsp.resp_len = 0;
775 SSL_CTX_up_ref(ctx);
776 s->session_ctx = ctx;
777#ifndef OPENSSL_NO_EC
778 if (ctx->ext.ecpointformats) {
779 s->ext.ecpointformats =
780 OPENSSL_memdup(ctx->ext.ecpointformats,
781 ctx->ext.ecpointformats_len);
782 if (!s->ext.ecpointformats)
783 goto err;
784 s->ext.ecpointformats_len =
785 ctx->ext.ecpointformats_len;
786 }
787 if (ctx->ext.supportedgroups) {
788 s->ext.supportedgroups =
789 OPENSSL_memdup(ctx->ext.supportedgroups,
790 ctx->ext.supportedgroups_len
791 * sizeof(*ctx->ext.supportedgroups));
792 if (!s->ext.supportedgroups)
793 goto err;
794 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
795 }
796#endif
797#ifndef OPENSSL_NO_NEXTPROTONEG
798 s->ext.npn = NULL;
799#endif
800
801 if (s->ctx->ext.alpn) {
802 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
803 if (s->ext.alpn == NULL)
804 goto err;
805 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
806 s->ext.alpn_len = s->ctx->ext.alpn_len;
807 }
808
809 s->verified_chain = NULL;
810 s->verify_result = X509_V_OK;
811
812 s->default_passwd_callback = ctx->default_passwd_callback;
813 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
814
815 s->method = ctx->method;
816
817 s->key_update = SSL_KEY_UPDATE_NONE;
818
819 s->allow_early_data_cb = ctx->allow_early_data_cb;
820 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
821
822 if (!s->method->ssl_new(s))
823 goto err;
824
825 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
826
827 if (!SSL_clear(s))
828 goto err;
829
830 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
831 goto err;
832
833#ifndef OPENSSL_NO_PSK
834 s->psk_client_callback = ctx->psk_client_callback;
835 s->psk_server_callback = ctx->psk_server_callback;
836#endif
837 s->psk_find_session_cb = ctx->psk_find_session_cb;
838 s->psk_use_session_cb = ctx->psk_use_session_cb;
839
840 s->job = NULL;
841
842#ifndef OPENSSL_NO_CT
843 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
844 ctx->ct_validation_callback_arg))
845 goto err;
846#endif
847
848 return s;
849 err:
850 SSL_free(s);
851 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
852 return NULL;
853}
854
855int SSL_is_dtls(const SSL *s)
856{
857 return SSL_IS_DTLS(s) ? 1 : 0;
858}
859
860int SSL_up_ref(SSL *s)
861{
862 int i;
863
864 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
865 return 0;
866
867 REF_PRINT_COUNT("SSL", s);
868 REF_ASSERT_ISNT(i < 2);
869 return ((i > 1) ? 1 : 0);
870}
871
872int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
873 unsigned int sid_ctx_len)
874{
875 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
876 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
877 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
878 return 0;
879 }
880 ctx->sid_ctx_length = sid_ctx_len;
881 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
882
883 return 1;
884}
885
886int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
887 unsigned int sid_ctx_len)
888{
889 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
890 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
891 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
892 return 0;
893 }
894 ssl->sid_ctx_length = sid_ctx_len;
895 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
896
897 return 1;
898}
899
900int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
901{
902 CRYPTO_THREAD_write_lock(ctx->lock);
903 ctx->generate_session_id = cb;
904 CRYPTO_THREAD_unlock(ctx->lock);
905 return 1;
906}
907
908int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
909{
910 CRYPTO_THREAD_write_lock(ssl->lock);
911 ssl->generate_session_id = cb;
912 CRYPTO_THREAD_unlock(ssl->lock);
913 return 1;
914}
915
916int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
917 unsigned int id_len)
918{
919 /*
920 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
921 * we can "construct" a session to give us the desired check - i.e. to
922 * find if there's a session in the hash table that would conflict with
923 * any new session built out of this id/id_len and the ssl_version in use
924 * by this SSL.
925 */
926 SSL_SESSION r, *p;
927
928 if (id_len > sizeof(r.session_id))
929 return 0;
930
931 r.ssl_version = ssl->version;
932 r.session_id_length = id_len;
933 memcpy(r.session_id, id, id_len);
934
935 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
936 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
937 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
938 return (p != NULL);
939}
940
941int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
942{
943 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
944}
945
946int SSL_set_purpose(SSL *s, int purpose)
947{
948 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
949}
950
951int SSL_CTX_set_trust(SSL_CTX *s, int trust)
952{
953 return X509_VERIFY_PARAM_set_trust(s->param, trust);
954}
955
956int SSL_set_trust(SSL *s, int trust)
957{
958 return X509_VERIFY_PARAM_set_trust(s->param, trust);
959}
960
961int SSL_set1_host(SSL *s, const char *hostname)
962{
963 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
964}
965
966int SSL_add1_host(SSL *s, const char *hostname)
967{
968 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
969}
970
971void SSL_set_hostflags(SSL *s, unsigned int flags)
972{
973 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
974}
975
976const char *SSL_get0_peername(SSL *s)
977{
978 return X509_VERIFY_PARAM_get0_peername(s->param);
979}
980
981int SSL_CTX_dane_enable(SSL_CTX *ctx)
982{
983 return dane_ctx_enable(&ctx->dane);
984}
985
986unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
987{
988 unsigned long orig = ctx->dane.flags;
989
990 ctx->dane.flags |= flags;
991 return orig;
992}
993
994unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
995{
996 unsigned long orig = ctx->dane.flags;
997
998 ctx->dane.flags &= ~flags;
999 return orig;
1000}
1001
1002int SSL_dane_enable(SSL *s, const char *basedomain)
1003{
1004 SSL_DANE *dane = &s->dane;
1005
1006 if (s->ctx->dane.mdmax == 0) {
1007 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1008 return 0;
1009 }
1010 if (dane->trecs != NULL) {
1011 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1012 return 0;
1013 }
1014
1015 /*
1016 * Default SNI name. This rejects empty names, while set1_host below
1017 * accepts them and disables host name checks. To avoid side-effects with
1018 * invalid input, set the SNI name first.
1019 */
1020 if (s->ext.hostname == NULL) {
1021 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1022 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1023 return -1;
1024 }
1025 }
1026
1027 /* Primary RFC6125 reference identifier */
1028 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1029 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1030 return -1;
1031 }
1032
1033 dane->mdpth = -1;
1034 dane->pdpth = -1;
1035 dane->dctx = &s->ctx->dane;
1036 dane->trecs = sk_danetls_record_new_null();
1037
1038 if (dane->trecs == NULL) {
1039 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1040 return -1;
1041 }
1042 return 1;
1043}
1044
1045unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1046{
1047 unsigned long orig = ssl->dane.flags;
1048
1049 ssl->dane.flags |= flags;
1050 return orig;
1051}
1052
1053unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1054{
1055 unsigned long orig = ssl->dane.flags;
1056
1057 ssl->dane.flags &= ~flags;
1058 return orig;
1059}
1060
1061int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1062{
1063 SSL_DANE *dane = &s->dane;
1064
1065 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1066 return -1;
1067 if (dane->mtlsa) {
1068 if (mcert)
1069 *mcert = dane->mcert;
1070 if (mspki)
1071 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1072 }
1073 return dane->mdpth;
1074}
1075
1076int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1077 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1078{
1079 SSL_DANE *dane = &s->dane;
1080
1081 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1082 return -1;
1083 if (dane->mtlsa) {
1084 if (usage)
1085 *usage = dane->mtlsa->usage;
1086 if (selector)
1087 *selector = dane->mtlsa->selector;
1088 if (mtype)
1089 *mtype = dane->mtlsa->mtype;
1090 if (data)
1091 *data = dane->mtlsa->data;
1092 if (dlen)
1093 *dlen = dane->mtlsa->dlen;
1094 }
1095 return dane->mdpth;
1096}
1097
1098SSL_DANE *SSL_get0_dane(SSL *s)
1099{
1100 return &s->dane;
1101}
1102
1103int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1104 uint8_t mtype, unsigned const char *data, size_t dlen)
1105{
1106 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1107}
1108
1109int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1110 uint8_t ord)
1111{
1112 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1113}
1114
1115int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1116{
1117 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1118}
1119
1120int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1121{
1122 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1123}
1124
1125X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1126{
1127 return ctx->param;
1128}
1129
1130X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1131{
1132 return ssl->param;
1133}
1134
1135void SSL_certs_clear(SSL *s)
1136{
1137 ssl_cert_clear_certs(s->cert);
1138}
1139
1140void SSL_free(SSL *s)
1141{
1142 int i;
1143
1144 if (s == NULL)
1145 return;
1146 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1147 REF_PRINT_COUNT("SSL", s);
1148 if (i > 0)
1149 return;
1150 REF_ASSERT_ISNT(i < 0);
1151
1152 X509_VERIFY_PARAM_free(s->param);
1153 dane_final(&s->dane);
1154 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1155
1156 /* Ignore return value */
1157 ssl_free_wbio_buffer(s);
1158
1159 BIO_free_all(s->wbio);
1160 BIO_free_all(s->rbio);
1161
1162 BUF_MEM_free(s->init_buf);
1163
1164 /* add extra stuff */
1165 sk_SSL_CIPHER_free(s->cipher_list);
1166 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1167 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1168 sk_SSL_CIPHER_free(s->peer_ciphers);
1169
1170 /* Make the next call work :-) */
1171 if (s->session != NULL) {
1172 ssl_clear_bad_session(s);
1173 SSL_SESSION_free(s->session);
1174 }
1175 SSL_SESSION_free(s->psksession);
1176 OPENSSL_free(s->psksession_id);
1177
1178 clear_ciphers(s);
1179
1180 ssl_cert_free(s->cert);
1181 OPENSSL_free(s->shared_sigalgs);
1182 /* Free up if allocated */
1183
1184 OPENSSL_free(s->ext.hostname);
1185 SSL_CTX_free(s->session_ctx);
1186#ifndef OPENSSL_NO_EC
1187 OPENSSL_free(s->ext.ecpointformats);
1188 OPENSSL_free(s->ext.peer_ecpointformats);
1189 OPENSSL_free(s->ext.supportedgroups);
1190 OPENSSL_free(s->ext.peer_supportedgroups);
1191#endif /* OPENSSL_NO_EC */
1192 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1193#ifndef OPENSSL_NO_OCSP
1194 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1195#endif
1196#ifndef OPENSSL_NO_CT
1197 SCT_LIST_free(s->scts);
1198 OPENSSL_free(s->ext.scts);
1199#endif
1200 OPENSSL_free(s->ext.ocsp.resp);
1201 OPENSSL_free(s->ext.alpn);
1202 OPENSSL_free(s->ext.tls13_cookie);
1203 if (s->clienthello != NULL)
1204 OPENSSL_free(s->clienthello->pre_proc_exts);
1205 OPENSSL_free(s->clienthello);
1206 OPENSSL_free(s->pha_context);
1207 EVP_MD_CTX_free(s->pha_dgst);
1208
1209 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1210 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1211
1212 sk_X509_pop_free(s->verified_chain, X509_free);
1213
1214 if (s->method != NULL)
1215 s->method->ssl_free(s);
1216
1217 RECORD_LAYER_release(&s->rlayer);
1218
1219 SSL_CTX_free(s->ctx);
1220
1221 ASYNC_WAIT_CTX_free(s->waitctx);
1222
1223#if !defined(OPENSSL_NO_NEXTPROTONEG)
1224 OPENSSL_free(s->ext.npn);
1225#endif
1226
1227#ifndef OPENSSL_NO_SRTP
1228 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1229#endif
1230
1231 CRYPTO_THREAD_lock_free(s->lock);
1232
1233 OPENSSL_free(s);
1234}
1235
1236void SSL_set0_rbio(SSL *s, BIO *rbio)
1237{
1238 BIO_free_all(s->rbio);
1239 s->rbio = rbio;
1240}
1241
1242void SSL_set0_wbio(SSL *s, BIO *wbio)
1243{
1244 /*
1245 * If the output buffering BIO is still in place, remove it
1246 */
1247 if (s->bbio != NULL)
1248 s->wbio = BIO_pop(s->wbio);
1249
1250 BIO_free_all(s->wbio);
1251 s->wbio = wbio;
1252
1253 /* Re-attach |bbio| to the new |wbio|. */
1254 if (s->bbio != NULL)
1255 s->wbio = BIO_push(s->bbio, s->wbio);
1256}
1257
1258void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1259{
1260 /*
1261 * For historical reasons, this function has many different cases in
1262 * ownership handling.
1263 */
1264
1265 /* If nothing has changed, do nothing */
1266 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1267 return;
1268
1269 /*
1270 * If the two arguments are equal then one fewer reference is granted by the
1271 * caller than we want to take
1272 */
1273 if (rbio != NULL && rbio == wbio)
1274 BIO_up_ref(rbio);
1275
1276 /*
1277 * If only the wbio is changed only adopt one reference.
1278 */
1279 if (rbio == SSL_get_rbio(s)) {
1280 SSL_set0_wbio(s, wbio);
1281 return;
1282 }
1283 /*
1284 * There is an asymmetry here for historical reasons. If only the rbio is
1285 * changed AND the rbio and wbio were originally different, then we only
1286 * adopt one reference.
1287 */
1288 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1289 SSL_set0_rbio(s, rbio);
1290 return;
1291 }
1292
1293 /* Otherwise, adopt both references. */
1294 SSL_set0_rbio(s, rbio);
1295 SSL_set0_wbio(s, wbio);
1296}
1297
1298BIO *SSL_get_rbio(const SSL *s)
1299{
1300 return s->rbio;
1301}
1302
1303BIO *SSL_get_wbio(const SSL *s)
1304{
1305 if (s->bbio != NULL) {
1306 /*
1307 * If |bbio| is active, the true caller-configured BIO is its
1308 * |next_bio|.
1309 */
1310 return BIO_next(s->bbio);
1311 }
1312 return s->wbio;
1313}
1314
1315int SSL_get_fd(const SSL *s)
1316{
1317 return SSL_get_rfd(s);
1318}
1319
1320int SSL_get_rfd(const SSL *s)
1321{
1322 int ret = -1;
1323 BIO *b, *r;
1324
1325 b = SSL_get_rbio(s);
1326 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1327 if (r != NULL)
1328 BIO_get_fd(r, &ret);
1329 return ret;
1330}
1331
1332int SSL_get_wfd(const SSL *s)
1333{
1334 int ret = -1;
1335 BIO *b, *r;
1336
1337 b = SSL_get_wbio(s);
1338 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1339 if (r != NULL)
1340 BIO_get_fd(r, &ret);
1341 return ret;
1342}
1343
1344#ifndef OPENSSL_NO_SOCK
1345int SSL_set_fd(SSL *s, int fd)
1346{
1347 int ret = 0;
1348 BIO *bio = NULL;
1349
1350 bio = BIO_new(BIO_s_socket());
1351
1352 if (bio == NULL) {
1353 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1354 goto err;
1355 }
1356 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1357 SSL_set_bio(s, bio, bio);
1358 ret = 1;
1359 err:
1360 return ret;
1361}
1362
1363int SSL_set_wfd(SSL *s, int fd)
1364{
1365 BIO *rbio = SSL_get_rbio(s);
1366
1367 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1368 || (int)BIO_get_fd(rbio, NULL) != fd) {
1369 BIO *bio = BIO_new(BIO_s_socket());
1370
1371 if (bio == NULL) {
1372 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1373 return 0;
1374 }
1375 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1376 SSL_set0_wbio(s, bio);
1377 } else {
1378 BIO_up_ref(rbio);
1379 SSL_set0_wbio(s, rbio);
1380 }
1381 return 1;
1382}
1383
1384int SSL_set_rfd(SSL *s, int fd)
1385{
1386 BIO *wbio = SSL_get_wbio(s);
1387
1388 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1389 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1390 BIO *bio = BIO_new(BIO_s_socket());
1391
1392 if (bio == NULL) {
1393 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1394 return 0;
1395 }
1396 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1397 SSL_set0_rbio(s, bio);
1398 } else {
1399 BIO_up_ref(wbio);
1400 SSL_set0_rbio(s, wbio);
1401 }
1402
1403 return 1;
1404}
1405#endif
1406
1407/* return length of latest Finished message we sent, copy to 'buf' */
1408size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1409{
1410 size_t ret = 0;
1411
1412 if (s->s3 != NULL) {
1413 ret = s->s3->tmp.finish_md_len;
1414 if (count > ret)
1415 count = ret;
1416 memcpy(buf, s->s3->tmp.finish_md, count);
1417 }
1418 return ret;
1419}
1420
1421/* return length of latest Finished message we expected, copy to 'buf' */
1422size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1423{
1424 size_t ret = 0;
1425
1426 if (s->s3 != NULL) {
1427 ret = s->s3->tmp.peer_finish_md_len;
1428 if (count > ret)
1429 count = ret;
1430 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1431 }
1432 return ret;
1433}
1434
1435int SSL_get_verify_mode(const SSL *s)
1436{
1437 return s->verify_mode;
1438}
1439
1440int SSL_get_verify_depth(const SSL *s)
1441{
1442 return X509_VERIFY_PARAM_get_depth(s->param);
1443}
1444
1445int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1446 return s->verify_callback;
1447}
1448
1449int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1450{
1451 return ctx->verify_mode;
1452}
1453
1454int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1455{
1456 return X509_VERIFY_PARAM_get_depth(ctx->param);
1457}
1458
1459int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1460 return ctx->default_verify_callback;
1461}
1462
1463void SSL_set_verify(SSL *s, int mode,
1464 int (*callback) (int ok, X509_STORE_CTX *ctx))
1465{
1466 s->verify_mode = mode;
1467 if (callback != NULL)
1468 s->verify_callback = callback;
1469}
1470
1471void SSL_set_verify_depth(SSL *s, int depth)
1472{
1473 X509_VERIFY_PARAM_set_depth(s->param, depth);
1474}
1475
1476void SSL_set_read_ahead(SSL *s, int yes)
1477{
1478 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1479}
1480
1481int SSL_get_read_ahead(const SSL *s)
1482{
1483 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1484}
1485
1486int SSL_pending(const SSL *s)
1487{
1488 size_t pending = s->method->ssl_pending(s);
1489
1490 /*
1491 * SSL_pending cannot work properly if read-ahead is enabled
1492 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1493 * impossible to fix since SSL_pending cannot report errors that may be
1494 * observed while scanning the new data. (Note that SSL_pending() is
1495 * often used as a boolean value, so we'd better not return -1.)
1496 *
1497 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1498 * we just return INT_MAX.
1499 */
1500 return pending < INT_MAX ? (int)pending : INT_MAX;
1501}
1502
1503int SSL_has_pending(const SSL *s)
1504{
1505 /*
1506 * Similar to SSL_pending() but returns a 1 to indicate that we have
1507 * unprocessed data available or 0 otherwise (as opposed to the number of
1508 * bytes available). Unlike SSL_pending() this will take into account
1509 * read_ahead data. A 1 return simply indicates that we have unprocessed
1510 * data. That data may not result in any application data, or we may fail
1511 * to parse the records for some reason.
1512 */
1513 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1514 return 1;
1515
1516 return RECORD_LAYER_read_pending(&s->rlayer);
1517}
1518
1519X509 *SSL_get_peer_certificate(const SSL *s)
1520{
1521 X509 *r;
1522
1523 if ((s == NULL) || (s->session == NULL))
1524 r = NULL;
1525 else
1526 r = s->session->peer;
1527
1528 if (r == NULL)
1529 return r;
1530
1531 X509_up_ref(r);
1532
1533 return r;
1534}
1535
1536STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1537{
1538 STACK_OF(X509) *r;
1539
1540 if ((s == NULL) || (s->session == NULL))
1541 r = NULL;
1542 else
1543 r = s->session->peer_chain;
1544
1545 /*
1546 * If we are a client, cert_chain includes the peer's own certificate; if
1547 * we are a server, it does not.
1548 */
1549
1550 return r;
1551}
1552
1553/*
1554 * Now in theory, since the calling process own 't' it should be safe to
1555 * modify. We need to be able to read f without being hassled
1556 */
1557int SSL_copy_session_id(SSL *t, const SSL *f)
1558{
1559 int i;
1560 /* Do we need to to SSL locking? */
1561 if (!SSL_set_session(t, SSL_get_session(f))) {
1562 return 0;
1563 }
1564
1565 /*
1566 * what if we are setup for one protocol version but want to talk another
1567 */
1568 if (t->method != f->method) {
1569 t->method->ssl_free(t);
1570 t->method = f->method;
1571 if (t->method->ssl_new(t) == 0)
1572 return 0;
1573 }
1574
1575 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1576 ssl_cert_free(t->cert);
1577 t->cert = f->cert;
1578 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1579 return 0;
1580 }
1581
1582 return 1;
1583}
1584
1585/* Fix this so it checks all the valid key/cert options */
1586int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1587{
1588 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1589 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1590 return 0;
1591 }
1592 if (ctx->cert->key->privatekey == NULL) {
1593 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1594 return 0;
1595 }
1596 return X509_check_private_key
1597 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1598}
1599
1600/* Fix this function so that it takes an optional type parameter */
1601int SSL_check_private_key(const SSL *ssl)
1602{
1603 if (ssl == NULL) {
1604 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1605 return 0;
1606 }
1607 if (ssl->cert->key->x509 == NULL) {
1608 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1609 return 0;
1610 }
1611 if (ssl->cert->key->privatekey == NULL) {
1612 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1613 return 0;
1614 }
1615 return X509_check_private_key(ssl->cert->key->x509,
1616 ssl->cert->key->privatekey);
1617}
1618
1619int SSL_waiting_for_async(SSL *s)
1620{
1621 if (s->job)
1622 return 1;
1623
1624 return 0;
1625}
1626
1627int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1628{
1629 ASYNC_WAIT_CTX *ctx = s->waitctx;
1630
1631 if (ctx == NULL)
1632 return 0;
1633 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1634}
1635
1636int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1637 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1638{
1639 ASYNC_WAIT_CTX *ctx = s->waitctx;
1640
1641 if (ctx == NULL)
1642 return 0;
1643 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1644 numdelfds);
1645}
1646
1647int SSL_accept(SSL *s)
1648{
1649 if (s->handshake_func == NULL) {
1650 /* Not properly initialized yet */
1651 SSL_set_accept_state(s);
1652 }
1653
1654 return SSL_do_handshake(s);
1655}
1656
1657int SSL_connect(SSL *s)
1658{
1659 if (s->handshake_func == NULL) {
1660 /* Not properly initialized yet */
1661 SSL_set_connect_state(s);
1662 }
1663
1664 return SSL_do_handshake(s);
1665}
1666
1667long SSL_get_default_timeout(const SSL *s)
1668{
1669 return s->method->get_timeout();
1670}
1671
1672static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1673 int (*func) (void *))
1674{
1675 int ret;
1676 if (s->waitctx == NULL) {
1677 s->waitctx = ASYNC_WAIT_CTX_new();
1678 if (s->waitctx == NULL)
1679 return -1;
1680 }
1681 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1682 sizeof(struct ssl_async_args))) {
1683 case ASYNC_ERR:
1684 s->rwstate = SSL_NOTHING;
1685 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1686 return -1;
1687 case ASYNC_PAUSE:
1688 s->rwstate = SSL_ASYNC_PAUSED;
1689 return -1;
1690 case ASYNC_NO_JOBS:
1691 s->rwstate = SSL_ASYNC_NO_JOBS;
1692 return -1;
1693 case ASYNC_FINISH:
1694 s->job = NULL;
1695 return ret;
1696 default:
1697 s->rwstate = SSL_NOTHING;
1698 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1699 /* Shouldn't happen */
1700 return -1;
1701 }
1702}
1703
1704static int ssl_io_intern(void *vargs)
1705{
1706 struct ssl_async_args *args;
1707 SSL *s;
1708 void *buf;
1709 size_t num;
1710
1711 args = (struct ssl_async_args *)vargs;
1712 s = args->s;
1713 buf = args->buf;
1714 num = args->num;
1715 switch (args->type) {
1716 case READFUNC:
1717 return args->f.func_read(s, buf, num, &s->asyncrw);
1718 case WRITEFUNC:
1719 return args->f.func_write(s, buf, num, &s->asyncrw);
1720 case OTHERFUNC:
1721 return args->f.func_other(s);
1722 }
1723 return -1;
1724}
1725
1726int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1727{
1728 if (s->handshake_func == NULL) {
1729 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1730 return -1;
1731 }
1732
1733 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1734 s->rwstate = SSL_NOTHING;
1735 return 0;
1736 }
1737
1738 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1739 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1740 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1741 return 0;
1742 }
1743 /*
1744 * If we are a client and haven't received the ServerHello etc then we
1745 * better do that
1746 */
1747 ossl_statem_check_finish_init(s, 0);
1748
1749 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1750 struct ssl_async_args args;
1751 int ret;
1752
1753 args.s = s;
1754 args.buf = buf;
1755 args.num = num;
1756 args.type = READFUNC;
1757 args.f.func_read = s->method->ssl_read;
1758
1759 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1760 *readbytes = s->asyncrw;
1761 return ret;
1762 } else {
1763 return s->method->ssl_read(s, buf, num, readbytes);
1764 }
1765}
1766
1767int SSL_read(SSL *s, void *buf, int num)
1768{
1769 int ret;
1770 size_t readbytes;
1771
1772 if (num < 0) {
1773 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1774 return -1;
1775 }
1776
1777 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1778
1779 /*
1780 * The cast is safe here because ret should be <= INT_MAX because num is
1781 * <= INT_MAX
1782 */
1783 if (ret > 0)
1784 ret = (int)readbytes;
1785
1786 return ret;
1787}
1788
1789int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1790{
1791 int ret = ssl_read_internal(s, buf, num, readbytes);
1792
1793 if (ret < 0)
1794 ret = 0;
1795 return ret;
1796}
1797
1798int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1799{
1800 int ret;
1801
1802 if (!s->server) {
1803 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1804 return SSL_READ_EARLY_DATA_ERROR;
1805 }
1806
1807 switch (s->early_data_state) {
1808 case SSL_EARLY_DATA_NONE:
1809 if (!SSL_in_before(s)) {
1810 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1811 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1812 return SSL_READ_EARLY_DATA_ERROR;
1813 }
1814 /* fall through */
1815
1816 case SSL_EARLY_DATA_ACCEPT_RETRY:
1817 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1818 ret = SSL_accept(s);
1819 if (ret <= 0) {
1820 /* NBIO or error */
1821 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1822 return SSL_READ_EARLY_DATA_ERROR;
1823 }
1824 /* fall through */
1825
1826 case SSL_EARLY_DATA_READ_RETRY:
1827 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1828 s->early_data_state = SSL_EARLY_DATA_READING;
1829 ret = SSL_read_ex(s, buf, num, readbytes);
1830 /*
1831 * State machine will update early_data_state to
1832 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1833 * message
1834 */
1835 if (ret > 0 || (ret <= 0 && s->early_data_state
1836 != SSL_EARLY_DATA_FINISHED_READING)) {
1837 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1838 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1839 : SSL_READ_EARLY_DATA_ERROR;
1840 }
1841 } else {
1842 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1843 }
1844 *readbytes = 0;
1845 return SSL_READ_EARLY_DATA_FINISH;
1846
1847 default:
1848 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1849 return SSL_READ_EARLY_DATA_ERROR;
1850 }
1851}
1852
1853int SSL_get_early_data_status(const SSL *s)
1854{
1855 return s->ext.early_data;
1856}
1857
1858static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1859{
1860 if (s->handshake_func == NULL) {
1861 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1862 return -1;
1863 }
1864
1865 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1866 return 0;
1867 }
1868 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1869 struct ssl_async_args args;
1870 int ret;
1871
1872 args.s = s;
1873 args.buf = buf;
1874 args.num = num;
1875 args.type = READFUNC;
1876 args.f.func_read = s->method->ssl_peek;
1877
1878 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1879 *readbytes = s->asyncrw;
1880 return ret;
1881 } else {
1882 return s->method->ssl_peek(s, buf, num, readbytes);
1883 }
1884}
1885
1886int SSL_peek(SSL *s, void *buf, int num)
1887{
1888 int ret;
1889 size_t readbytes;
1890
1891 if (num < 0) {
1892 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1893 return -1;
1894 }
1895
1896 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1897
1898 /*
1899 * The cast is safe here because ret should be <= INT_MAX because num is
1900 * <= INT_MAX
1901 */
1902 if (ret > 0)
1903 ret = (int)readbytes;
1904
1905 return ret;
1906}
1907
1908
1909int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1910{
1911 int ret = ssl_peek_internal(s, buf, num, readbytes);
1912
1913 if (ret < 0)
1914 ret = 0;
1915 return ret;
1916}
1917
1918int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1919{
1920 if (s->handshake_func == NULL) {
1921 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1922 return -1;
1923 }
1924
1925 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1926 s->rwstate = SSL_NOTHING;
1927 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1928 return -1;
1929 }
1930
1931 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1932 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1933 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1934 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1935 return 0;
1936 }
1937 /* If we are a client and haven't sent the Finished we better do that */
1938 ossl_statem_check_finish_init(s, 1);
1939
1940 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1941 int ret;
1942 struct ssl_async_args args;
1943
1944 args.s = s;
1945 args.buf = (void *)buf;
1946 args.num = num;
1947 args.type = WRITEFUNC;
1948 args.f.func_write = s->method->ssl_write;
1949
1950 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1951 *written = s->asyncrw;
1952 return ret;
1953 } else {
1954 return s->method->ssl_write(s, buf, num, written);
1955 }
1956}
1957
1958int SSL_write(SSL *s, const void *buf, int num)
1959{
1960 int ret;
1961 size_t written;
1962
1963 if (num < 0) {
1964 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
1965 return -1;
1966 }
1967
1968 ret = ssl_write_internal(s, buf, (size_t)num, &written);
1969
1970 /*
1971 * The cast is safe here because ret should be <= INT_MAX because num is
1972 * <= INT_MAX
1973 */
1974 if (ret > 0)
1975 ret = (int)written;
1976
1977 return ret;
1978}
1979
1980int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
1981{
1982 int ret = ssl_write_internal(s, buf, num, written);
1983
1984 if (ret < 0)
1985 ret = 0;
1986 return ret;
1987}
1988
1989int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
1990{
1991 int ret, early_data_state;
1992 size_t writtmp;
1993 uint32_t partialwrite;
1994
1995 switch (s->early_data_state) {
1996 case SSL_EARLY_DATA_NONE:
1997 if (s->server
1998 || !SSL_in_before(s)
1999 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2000 && (s->psk_use_session_cb == NULL))) {
2001 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2002 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2003 return 0;
2004 }
2005 /* fall through */
2006
2007 case SSL_EARLY_DATA_CONNECT_RETRY:
2008 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2009 ret = SSL_connect(s);
2010 if (ret <= 0) {
2011 /* NBIO or error */
2012 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2013 return 0;
2014 }
2015 /* fall through */
2016
2017 case SSL_EARLY_DATA_WRITE_RETRY:
2018 s->early_data_state = SSL_EARLY_DATA_WRITING;
2019 /*
2020 * We disable partial write for early data because we don't keep track
2021 * of how many bytes we've written between the SSL_write_ex() call and
2022 * the flush if the flush needs to be retried)
2023 */
2024 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2025 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2026 ret = SSL_write_ex(s, buf, num, &writtmp);
2027 s->mode |= partialwrite;
2028 if (!ret) {
2029 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2030 return ret;
2031 }
2032 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2033 /* fall through */
2034
2035 case SSL_EARLY_DATA_WRITE_FLUSH:
2036 /* The buffering BIO is still in place so we need to flush it */
2037 if (statem_flush(s) != 1)
2038 return 0;
2039 *written = num;
2040 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2041 return 1;
2042
2043 case SSL_EARLY_DATA_FINISHED_READING:
2044 case SSL_EARLY_DATA_READ_RETRY:
2045 early_data_state = s->early_data_state;
2046 /* We are a server writing to an unauthenticated client */
2047 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2048 ret = SSL_write_ex(s, buf, num, written);
2049 /* The buffering BIO is still in place */
2050 if (ret)
2051 (void)BIO_flush(s->wbio);
2052 s->early_data_state = early_data_state;
2053 return ret;
2054
2055 default:
2056 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2057 return 0;
2058 }
2059}
2060
2061int SSL_shutdown(SSL *s)
2062{
2063 /*
2064 * Note that this function behaves differently from what one might
2065 * expect. Return values are 0 for no success (yet), 1 for success; but
2066 * calling it once is usually not enough, even if blocking I/O is used
2067 * (see ssl3_shutdown).
2068 */
2069
2070 if (s->handshake_func == NULL) {
2071 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2072 return -1;
2073 }
2074
2075 if (!SSL_in_init(s)) {
2076 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2077 struct ssl_async_args args;
2078
2079 args.s = s;
2080 args.type = OTHERFUNC;
2081 args.f.func_other = s->method->ssl_shutdown;
2082
2083 return ssl_start_async_job(s, &args, ssl_io_intern);
2084 } else {
2085 return s->method->ssl_shutdown(s);
2086 }
2087 } else {
2088 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2089 return -1;
2090 }
2091}
2092
2093int SSL_key_update(SSL *s, int updatetype)
2094{
2095 /*
2096 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2097 * negotiated, and that it is appropriate to call SSL_key_update() instead
2098 * of SSL_renegotiate().
2099 */
2100 if (!SSL_IS_TLS13(s)) {
2101 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2102 return 0;
2103 }
2104
2105 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2106 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2107 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2108 return 0;
2109 }
2110
2111 if (!SSL_is_init_finished(s)) {
2112 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2113 return 0;
2114 }
2115
2116 ossl_statem_set_in_init(s, 1);
2117 s->key_update = updatetype;
2118 return 1;
2119}
2120
2121int SSL_get_key_update_type(const SSL *s)
2122{
2123 return s->key_update;
2124}
2125
2126int SSL_renegotiate(SSL *s)
2127{
2128 if (SSL_IS_TLS13(s)) {
2129 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2130 return 0;
2131 }
2132
2133 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2134 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2135 return 0;
2136 }
2137
2138 s->renegotiate = 1;
2139 s->new_session = 1;
2140
2141 return s->method->ssl_renegotiate(s);
2142}
2143
2144int SSL_renegotiate_abbreviated(SSL *s)
2145{
2146 if (SSL_IS_TLS13(s)) {
2147 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2148 return 0;
2149 }
2150
2151 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2152 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2153 return 0;
2154 }
2155
2156 s->renegotiate = 1;
2157 s->new_session = 0;
2158
2159 return s->method->ssl_renegotiate(s);
2160}
2161
2162int SSL_renegotiate_pending(const SSL *s)
2163{
2164 /*
2165 * becomes true when negotiation is requested; false again once a
2166 * handshake has finished
2167 */
2168 return (s->renegotiate != 0);
2169}
2170
2171long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2172{
2173 long l;
2174
2175 switch (cmd) {
2176 case SSL_CTRL_GET_READ_AHEAD:
2177 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2178 case SSL_CTRL_SET_READ_AHEAD:
2179 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2180 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2181 return l;
2182
2183 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2184 s->msg_callback_arg = parg;
2185 return 1;
2186
2187 case SSL_CTRL_MODE:
2188 return (s->mode |= larg);
2189 case SSL_CTRL_CLEAR_MODE:
2190 return (s->mode &= ~larg);
2191 case SSL_CTRL_GET_MAX_CERT_LIST:
2192 return (long)s->max_cert_list;
2193 case SSL_CTRL_SET_MAX_CERT_LIST:
2194 if (larg < 0)
2195 return 0;
2196 l = (long)s->max_cert_list;
2197 s->max_cert_list = (size_t)larg;
2198 return l;
2199 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2200 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2201 return 0;
2202 s->max_send_fragment = larg;
2203 if (s->max_send_fragment < s->split_send_fragment)
2204 s->split_send_fragment = s->max_send_fragment;
2205 return 1;
2206 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2207 if ((size_t)larg > s->max_send_fragment || larg == 0)
2208 return 0;
2209 s->split_send_fragment = larg;
2210 return 1;
2211 case SSL_CTRL_SET_MAX_PIPELINES:
2212 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2213 return 0;
2214 s->max_pipelines = larg;
2215 if (larg > 1)
2216 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2217 return 1;
2218 case SSL_CTRL_GET_RI_SUPPORT:
2219 if (s->s3)
2220 return s->s3->send_connection_binding;
2221 else
2222 return 0;
2223 case SSL_CTRL_CERT_FLAGS:
2224 return (s->cert->cert_flags |= larg);
2225 case SSL_CTRL_CLEAR_CERT_FLAGS:
2226 return (s->cert->cert_flags &= ~larg);
2227
2228 case SSL_CTRL_GET_RAW_CIPHERLIST:
2229 if (parg) {
2230 if (s->s3->tmp.ciphers_raw == NULL)
2231 return 0;
2232 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2233 return (int)s->s3->tmp.ciphers_rawlen;
2234 } else {
2235 return TLS_CIPHER_LEN;
2236 }
2237 case SSL_CTRL_GET_EXTMS_SUPPORT:
2238 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2239 return -1;
2240 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2241 return 1;
2242 else
2243 return 0;
2244 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2245 return ssl_check_allowed_versions(larg, s->max_proto_version)
2246 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2247 &s->min_proto_version);
2248 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2249 return s->min_proto_version;
2250 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2251 return ssl_check_allowed_versions(s->min_proto_version, larg)
2252 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2253 &s->max_proto_version);
2254 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2255 return s->max_proto_version;
2256 default:
2257 return s->method->ssl_ctrl(s, cmd, larg, parg);
2258 }
2259}
2260
2261long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2262{
2263 switch (cmd) {
2264 case SSL_CTRL_SET_MSG_CALLBACK:
2265 s->msg_callback = (void (*)
2266 (int write_p, int version, int content_type,
2267 const void *buf, size_t len, SSL *ssl,
2268 void *arg))(fp);
2269 return 1;
2270
2271 default:
2272 return s->method->ssl_callback_ctrl(s, cmd, fp);
2273 }
2274}
2275
2276LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2277{
2278 return ctx->sessions;
2279}
2280
2281long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2282{
2283 long l;
2284 /* For some cases with ctx == NULL perform syntax checks */
2285 if (ctx == NULL) {
2286 switch (cmd) {
2287#ifndef OPENSSL_NO_EC
2288 case SSL_CTRL_SET_GROUPS_LIST:
2289 return tls1_set_groups_list(NULL, NULL, parg);
2290#endif
2291 case SSL_CTRL_SET_SIGALGS_LIST:
2292 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2293 return tls1_set_sigalgs_list(NULL, parg, 0);
2294 default:
2295 return 0;
2296 }
2297 }
2298
2299 switch (cmd) {
2300 case SSL_CTRL_GET_READ_AHEAD:
2301 return ctx->read_ahead;
2302 case SSL_CTRL_SET_READ_AHEAD:
2303 l = ctx->read_ahead;
2304 ctx->read_ahead = larg;
2305 return l;
2306
2307 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2308 ctx->msg_callback_arg = parg;
2309 return 1;
2310
2311 case SSL_CTRL_GET_MAX_CERT_LIST:
2312 return (long)ctx->max_cert_list;
2313 case SSL_CTRL_SET_MAX_CERT_LIST:
2314 if (larg < 0)
2315 return 0;
2316 l = (long)ctx->max_cert_list;
2317 ctx->max_cert_list = (size_t)larg;
2318 return l;
2319
2320 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2321 if (larg < 0)
2322 return 0;
2323 l = (long)ctx->session_cache_size;
2324 ctx->session_cache_size = (size_t)larg;
2325 return l;
2326 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2327 return (long)ctx->session_cache_size;
2328 case SSL_CTRL_SET_SESS_CACHE_MODE:
2329 l = ctx->session_cache_mode;
2330 ctx->session_cache_mode = larg;
2331 return l;
2332 case SSL_CTRL_GET_SESS_CACHE_MODE:
2333 return ctx->session_cache_mode;
2334
2335 case SSL_CTRL_SESS_NUMBER:
2336 return lh_SSL_SESSION_num_items(ctx->sessions);
2337 case SSL_CTRL_SESS_CONNECT:
2338 return tsan_load(&ctx->stats.sess_connect);
2339 case SSL_CTRL_SESS_CONNECT_GOOD:
2340 return tsan_load(&ctx->stats.sess_connect_good);
2341 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2342 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2343 case SSL_CTRL_SESS_ACCEPT:
2344 return tsan_load(&ctx->stats.sess_accept);
2345 case SSL_CTRL_SESS_ACCEPT_GOOD:
2346 return tsan_load(&ctx->stats.sess_accept_good);
2347 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2348 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2349 case SSL_CTRL_SESS_HIT:
2350 return tsan_load(&ctx->stats.sess_hit);
2351 case SSL_CTRL_SESS_CB_HIT:
2352 return tsan_load(&ctx->stats.sess_cb_hit);
2353 case SSL_CTRL_SESS_MISSES:
2354 return tsan_load(&ctx->stats.sess_miss);
2355 case SSL_CTRL_SESS_TIMEOUTS:
2356 return tsan_load(&ctx->stats.sess_timeout);
2357 case SSL_CTRL_SESS_CACHE_FULL:
2358 return tsan_load(&ctx->stats.sess_cache_full);
2359 case SSL_CTRL_MODE:
2360 return (ctx->mode |= larg);
2361 case SSL_CTRL_CLEAR_MODE:
2362 return (ctx->mode &= ~larg);
2363 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2364 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2365 return 0;
2366 ctx->max_send_fragment = larg;
2367 if (ctx->max_send_fragment < ctx->split_send_fragment)
2368 ctx->split_send_fragment = ctx->max_send_fragment;
2369 return 1;
2370 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2371 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2372 return 0;
2373 ctx->split_send_fragment = larg;
2374 return 1;
2375 case SSL_CTRL_SET_MAX_PIPELINES:
2376 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2377 return 0;
2378 ctx->max_pipelines = larg;
2379 return 1;
2380 case SSL_CTRL_CERT_FLAGS:
2381 return (ctx->cert->cert_flags |= larg);
2382 case SSL_CTRL_CLEAR_CERT_FLAGS:
2383 return (ctx->cert->cert_flags &= ~larg);
2384 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2385 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2386 && ssl_set_version_bound(ctx->method->version, (int)larg,
2387 &ctx->min_proto_version);
2388 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2389 return ctx->min_proto_version;
2390 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2391 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2392 && ssl_set_version_bound(ctx->method->version, (int)larg,
2393 &ctx->max_proto_version);
2394 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2395 return ctx->max_proto_version;
2396 default:
2397 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2398 }
2399}
2400
2401long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2402{
2403 switch (cmd) {
2404 case SSL_CTRL_SET_MSG_CALLBACK:
2405 ctx->msg_callback = (void (*)
2406 (int write_p, int version, int content_type,
2407 const void *buf, size_t len, SSL *ssl,
2408 void *arg))(fp);
2409 return 1;
2410
2411 default:
2412 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2413 }
2414}
2415
2416int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2417{
2418 if (a->id > b->id)
2419 return 1;
2420 if (a->id < b->id)
2421 return -1;
2422 return 0;
2423}
2424
2425int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2426 const SSL_CIPHER *const *bp)
2427{
2428 if ((*ap)->id > (*bp)->id)
2429 return 1;
2430 if ((*ap)->id < (*bp)->id)
2431 return -1;
2432 return 0;
2433}
2434
2435/** return a STACK of the ciphers available for the SSL and in order of
2436 * preference */
2437STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2438{
2439 if (s != NULL) {
2440 if (s->cipher_list != NULL) {
2441 return s->cipher_list;
2442 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2443 return s->ctx->cipher_list;
2444 }
2445 }
2446 return NULL;
2447}
2448
2449STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2450{
2451 if ((s == NULL) || !s->server)
2452 return NULL;
2453 return s->peer_ciphers;
2454}
2455
2456STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2457{
2458 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2459 int i;
2460
2461 ciphers = SSL_get_ciphers(s);
2462 if (!ciphers)
2463 return NULL;
2464 if (!ssl_set_client_disabled(s))
2465 return NULL;
2466 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2467 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2468 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2469 if (!sk)
2470 sk = sk_SSL_CIPHER_new_null();
2471 if (!sk)
2472 return NULL;
2473 if (!sk_SSL_CIPHER_push(sk, c)) {
2474 sk_SSL_CIPHER_free(sk);
2475 return NULL;
2476 }
2477 }
2478 }
2479 return sk;
2480}
2481
2482/** return a STACK of the ciphers available for the SSL and in order of
2483 * algorithm id */
2484STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2485{
2486 if (s != NULL) {
2487 if (s->cipher_list_by_id != NULL) {
2488 return s->cipher_list_by_id;
2489 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2490 return s->ctx->cipher_list_by_id;
2491 }
2492 }
2493 return NULL;
2494}
2495
2496/** The old interface to get the same thing as SSL_get_ciphers() */
2497const char *SSL_get_cipher_list(const SSL *s, int n)
2498{
2499 const SSL_CIPHER *c;
2500 STACK_OF(SSL_CIPHER) *sk;
2501
2502 if (s == NULL)
2503 return NULL;
2504 sk = SSL_get_ciphers(s);
2505 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2506 return NULL;
2507 c = sk_SSL_CIPHER_value(sk, n);
2508 if (c == NULL)
2509 return NULL;
2510 return c->name;
2511}
2512
2513/** return a STACK of the ciphers available for the SSL_CTX and in order of
2514 * preference */
2515STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2516{
2517 if (ctx != NULL)
2518 return ctx->cipher_list;
2519 return NULL;
2520}
2521
2522/*
2523 * Distinguish between ciphers controlled by set_ciphersuite() and
2524 * set_cipher_list() when counting.
2525 */
2526static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2527{
2528 int i, num = 0;
2529 const SSL_CIPHER *c;
2530
2531 if (sk == NULL)
2532 return 0;
2533 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2534 c = sk_SSL_CIPHER_value(sk, i);
2535 if (c->min_tls >= TLS1_3_VERSION)
2536 continue;
2537 num++;
2538 }
2539 return num;
2540}
2541
2542/** specify the ciphers to be used by default by the SSL_CTX */
2543int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2544{
2545 STACK_OF(SSL_CIPHER) *sk;
2546
2547 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2548 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2549 ctx->cert);
2550 /*
2551 * ssl_create_cipher_list may return an empty stack if it was unable to
2552 * find a cipher matching the given rule string (for example if the rule
2553 * string specifies a cipher which has been disabled). This is not an
2554 * error as far as ssl_create_cipher_list is concerned, and hence
2555 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2556 */
2557 if (sk == NULL)
2558 return 0;
2559 else if (cipher_list_tls12_num(sk) == 0) {
2560 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2561 return 0;
2562 }
2563 return 1;
2564}
2565
2566/** specify the ciphers to be used by the SSL */
2567int SSL_set_cipher_list(SSL *s, const char *str)
2568{
2569 STACK_OF(SSL_CIPHER) *sk;
2570
2571 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2572 &s->cipher_list, &s->cipher_list_by_id, str,
2573 s->cert);
2574 /* see comment in SSL_CTX_set_cipher_list */
2575 if (sk == NULL)
2576 return 0;
2577 else if (cipher_list_tls12_num(sk) == 0) {
2578 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2579 return 0;
2580 }
2581 return 1;
2582}
2583
2584char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2585{
2586 char *p;
2587 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2588 const SSL_CIPHER *c;
2589 int i;
2590
2591 if (!s->server
2592 || s->peer_ciphers == NULL
2593 || size < 2)
2594 return NULL;
2595
2596 p = buf;
2597 clntsk = s->peer_ciphers;
2598 srvrsk = SSL_get_ciphers(s);
2599 if (clntsk == NULL || srvrsk == NULL)
2600 return NULL;
2601
2602 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2603 return NULL;
2604
2605 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2606 int n;
2607
2608 c = sk_SSL_CIPHER_value(clntsk, i);
2609 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2610 continue;
2611
2612 n = strlen(c->name);
2613 if (n + 1 > size) {
2614 if (p != buf)
2615 --p;
2616 *p = '\0';
2617 return buf;
2618 }
2619 strcpy(p, c->name);
2620 p += n;
2621 *(p++) = ':';
2622 size -= n + 1;
2623 }
2624 p[-1] = '\0';
2625 return buf;
2626}
2627
2628/**
2629 * Return the requested servername (SNI) value. Note that the behaviour varies
2630 * depending on:
2631 * - whether this is called by the client or the server,
2632 * - if we are before or during/after the handshake,
2633 * - if a resumption or normal handshake is being attempted/has occurred
2634 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2635 *
2636 * Note that only the host_name type is defined (RFC 3546).
2637 */
2638const char *SSL_get_servername(const SSL *s, const int type)
2639{
2640 /*
2641 * If we don't know if we are the client or the server yet then we assume
2642 * client.
2643 */
2644 int server = s->handshake_func == NULL ? 0 : s->server;
2645 if (type != TLSEXT_NAMETYPE_host_name)
2646 return NULL;
2647
2648 if (server) {
2649 /**
2650 * Server side
2651 * In TLSv1.3 on the server SNI is not associated with the session
2652 * but in TLSv1.2 or below it is.
2653 *
2654 * Before the handshake:
2655 * - return NULL
2656 *
2657 * During/after the handshake (TLSv1.2 or below resumption occurred):
2658 * - If a servername was accepted by the server in the original
2659 * handshake then it will return that servername, or NULL otherwise.
2660 *
2661 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2662 * - The function will return the servername requested by the client in
2663 * this handshake or NULL if none was requested.
2664 */
2665 if (s->hit && !SSL_IS_TLS13(s))
2666 return s->session->ext.hostname;
2667 } else {
2668 /**
2669 * Client side
2670 *
2671 * Before the handshake:
2672 * - If a servername has been set via a call to
2673 * SSL_set_tlsext_host_name() then it will return that servername
2674 * - If one has not been set, but a TLSv1.2 resumption is being
2675 * attempted and the session from the original handshake had a
2676 * servername accepted by the server then it will return that
2677 * servername
2678 * - Otherwise it returns NULL
2679 *
2680 * During/after the handshake (TLSv1.2 or below resumption occurred):
2681 * - If the session from the orignal handshake had a servername accepted
2682 * by the server then it will return that servername.
2683 * - Otherwise it returns the servername set via
2684 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2685 *
2686 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2687 * - It will return the servername set via SSL_set_tlsext_host_name()
2688 * (or NULL if it was not called).
2689 */
2690 if (SSL_in_before(s)) {
2691 if (s->ext.hostname == NULL
2692 && s->session != NULL
2693 && s->session->ssl_version != TLS1_3_VERSION)
2694 return s->session->ext.hostname;
2695 } else {
2696 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2697 return s->session->ext.hostname;
2698 }
2699 }
2700
2701 return s->ext.hostname;
2702}
2703
2704int SSL_get_servername_type(const SSL *s)
2705{
2706 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2707 return TLSEXT_NAMETYPE_host_name;
2708 return -1;
2709}
2710
2711/*
2712 * SSL_select_next_proto implements the standard protocol selection. It is
2713 * expected that this function is called from the callback set by
2714 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2715 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2716 * not included in the length. A byte string of length 0 is invalid. No byte
2717 * string may be truncated. The current, but experimental algorithm for
2718 * selecting the protocol is: 1) If the server doesn't support NPN then this
2719 * is indicated to the callback. In this case, the client application has to
2720 * abort the connection or have a default application level protocol. 2) If
2721 * the server supports NPN, but advertises an empty list then the client
2722 * selects the first protocol in its list, but indicates via the API that this
2723 * fallback case was enacted. 3) Otherwise, the client finds the first
2724 * protocol in the server's list that it supports and selects this protocol.
2725 * This is because it's assumed that the server has better information about
2726 * which protocol a client should use. 4) If the client doesn't support any
2727 * of the server's advertised protocols, then this is treated the same as
2728 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2729 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2730 */
2731int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2732 const unsigned char *server,
2733 unsigned int server_len,
2734 const unsigned char *client, unsigned int client_len)
2735{
2736 unsigned int i, j;
2737 const unsigned char *result;
2738 int status = OPENSSL_NPN_UNSUPPORTED;
2739
2740 /*
2741 * For each protocol in server preference order, see if we support it.
2742 */
2743 for (i = 0; i < server_len;) {
2744 for (j = 0; j < client_len;) {
2745 if (server[i] == client[j] &&
2746 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2747 /* We found a match */
2748 result = &server[i];
2749 status = OPENSSL_NPN_NEGOTIATED;
2750 goto found;
2751 }
2752 j += client[j];
2753 j++;
2754 }
2755 i += server[i];
2756 i++;
2757 }
2758
2759 /* There's no overlap between our protocols and the server's list. */
2760 result = client;
2761 status = OPENSSL_NPN_NO_OVERLAP;
2762
2763 found:
2764 *out = (unsigned char *)result + 1;
2765 *outlen = result[0];
2766 return status;
2767}
2768
2769#ifndef OPENSSL_NO_NEXTPROTONEG
2770/*
2771 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2772 * client's requested protocol for this connection and returns 0. If the
2773 * client didn't request any protocol, then *data is set to NULL. Note that
2774 * the client can request any protocol it chooses. The value returned from
2775 * this function need not be a member of the list of supported protocols
2776 * provided by the callback.
2777 */
2778void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2779 unsigned *len)
2780{
2781 *data = s->ext.npn;
2782 if (!*data) {
2783 *len = 0;
2784 } else {
2785 *len = (unsigned int)s->ext.npn_len;
2786 }
2787}
2788
2789/*
2790 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2791 * a TLS server needs a list of supported protocols for Next Protocol
2792 * Negotiation. The returned list must be in wire format. The list is
2793 * returned by setting |out| to point to it and |outlen| to its length. This
2794 * memory will not be modified, but one should assume that the SSL* keeps a
2795 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2796 * wishes to advertise. Otherwise, no such extension will be included in the
2797 * ServerHello.
2798 */
2799void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2800 SSL_CTX_npn_advertised_cb_func cb,
2801 void *arg)
2802{
2803 ctx->ext.npn_advertised_cb = cb;
2804 ctx->ext.npn_advertised_cb_arg = arg;
2805}
2806
2807/*
2808 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2809 * client needs to select a protocol from the server's provided list. |out|
2810 * must be set to point to the selected protocol (which may be within |in|).
2811 * The length of the protocol name must be written into |outlen|. The
2812 * server's advertised protocols are provided in |in| and |inlen|. The
2813 * callback can assume that |in| is syntactically valid. The client must
2814 * select a protocol. It is fatal to the connection if this callback returns
2815 * a value other than SSL_TLSEXT_ERR_OK.
2816 */
2817void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2818 SSL_CTX_npn_select_cb_func cb,
2819 void *arg)
2820{
2821 ctx->ext.npn_select_cb = cb;
2822 ctx->ext.npn_select_cb_arg = arg;
2823}
2824#endif
2825
2826/*
2827 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2828 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2829 * length-prefixed strings). Returns 0 on success.
2830 */
2831int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2832 unsigned int protos_len)
2833{
2834 OPENSSL_free(ctx->ext.alpn);
2835 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2836 if (ctx->ext.alpn == NULL) {
2837 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2838 return 1;
2839 }
2840 ctx->ext.alpn_len = protos_len;
2841
2842 return 0;
2843}
2844
2845/*
2846 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2847 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2848 * length-prefixed strings). Returns 0 on success.
2849 */
2850int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2851 unsigned int protos_len)
2852{
2853 OPENSSL_free(ssl->ext.alpn);
2854 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2855 if (ssl->ext.alpn == NULL) {
2856 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2857 return 1;
2858 }
2859 ssl->ext.alpn_len = protos_len;
2860
2861 return 0;
2862}
2863
2864/*
2865 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2866 * called during ClientHello processing in order to select an ALPN protocol
2867 * from the client's list of offered protocols.
2868 */
2869void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2870 SSL_CTX_alpn_select_cb_func cb,
2871 void *arg)
2872{
2873 ctx->ext.alpn_select_cb = cb;
2874 ctx->ext.alpn_select_cb_arg = arg;
2875}
2876
2877/*
2878 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2879 * On return it sets |*data| to point to |*len| bytes of protocol name
2880 * (not including the leading length-prefix byte). If the server didn't
2881 * respond with a negotiated protocol then |*len| will be zero.
2882 */
2883void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2884 unsigned int *len)
2885{
2886 *data = NULL;
2887 if (ssl->s3)
2888 *data = ssl->s3->alpn_selected;
2889 if (*data == NULL)
2890 *len = 0;
2891 else
2892 *len = (unsigned int)ssl->s3->alpn_selected_len;
2893}
2894
2895int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2896 const char *label, size_t llen,
2897 const unsigned char *context, size_t contextlen,
2898 int use_context)
2899{
2900 if (s->session == NULL
2901 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
2902 return -1;
2903
2904 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2905 llen, context,
2906 contextlen, use_context);
2907}
2908
2909int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2910 const char *label, size_t llen,
2911 const unsigned char *context,
2912 size_t contextlen)
2913{
2914 if (s->version != TLS1_3_VERSION)
2915 return 0;
2916
2917 return tls13_export_keying_material_early(s, out, olen, label, llen,
2918 context, contextlen);
2919}
2920
2921static unsigned long ssl_session_hash(const SSL_SESSION *a)
2922{
2923 const unsigned char *session_id = a->session_id;
2924 unsigned long l;
2925 unsigned char tmp_storage[4];
2926
2927 if (a->session_id_length < sizeof(tmp_storage)) {
2928 memset(tmp_storage, 0, sizeof(tmp_storage));
2929 memcpy(tmp_storage, a->session_id, a->session_id_length);
2930 session_id = tmp_storage;
2931 }
2932
2933 l = (unsigned long)
2934 ((unsigned long)session_id[0]) |
2935 ((unsigned long)session_id[1] << 8L) |
2936 ((unsigned long)session_id[2] << 16L) |
2937 ((unsigned long)session_id[3] << 24L);
2938 return l;
2939}
2940
2941/*
2942 * NB: If this function (or indeed the hash function which uses a sort of
2943 * coarser function than this one) is changed, ensure
2944 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
2945 * being able to construct an SSL_SESSION that will collide with any existing
2946 * session with a matching session ID.
2947 */
2948static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
2949{
2950 if (a->ssl_version != b->ssl_version)
2951 return 1;
2952 if (a->session_id_length != b->session_id_length)
2953 return 1;
2954 return memcmp(a->session_id, b->session_id, a->session_id_length);
2955}
2956
2957/*
2958 * These wrapper functions should remain rather than redeclaring
2959 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
2960 * variable. The reason is that the functions aren't static, they're exposed
2961 * via ssl.h.
2962 */
2963
2964SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
2965{
2966 SSL_CTX *ret = NULL;
2967
2968 if (meth == NULL) {
2969 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
2970 return NULL;
2971 }
2972
2973 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
2974 return NULL;
2975
2976 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
2977 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
2978 goto err;
2979 }
2980 ret = OPENSSL_zalloc(sizeof(*ret));
2981 if (ret == NULL)
2982 goto err;
2983
2984 ret->method = meth;
2985 ret->min_proto_version = 0;
2986 ret->max_proto_version = 0;
2987 ret->mode = SSL_MODE_AUTO_RETRY;
2988 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
2989 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
2990 /* We take the system default. */
2991 ret->session_timeout = meth->get_timeout();
2992 ret->references = 1;
2993 ret->lock = CRYPTO_THREAD_lock_new();
2994 if (ret->lock == NULL) {
2995 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
2996 OPENSSL_free(ret);
2997 return NULL;
2998 }
2999 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3000 ret->verify_mode = SSL_VERIFY_NONE;
3001 if ((ret->cert = ssl_cert_new()) == NULL)
3002 goto err;
3003
3004 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3005 if (ret->sessions == NULL)
3006 goto err;
3007 ret->cert_store = X509_STORE_new();
3008 if (ret->cert_store == NULL)
3009 goto err;
3010#ifndef OPENSSL_NO_CT
3011 ret->ctlog_store = CTLOG_STORE_new();
3012 if (ret->ctlog_store == NULL)
3013 goto err;
3014#endif
3015
3016 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
3017 goto err;
3018
3019 if (!ssl_create_cipher_list(ret->method,
3020 ret->tls13_ciphersuites,
3021 &ret->cipher_list, &ret->cipher_list_by_id,
3022 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3023 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3024 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3025 goto err2;
3026 }
3027
3028 ret->param = X509_VERIFY_PARAM_new();
3029 if (ret->param == NULL)
3030 goto err;
3031
3032 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3033 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3034 goto err2;
3035 }
3036 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3037 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3038 goto err2;
3039 }
3040
3041 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3042 goto err;
3043
3044 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3045 goto err;
3046
3047 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3048 goto err;
3049
3050 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3051 goto err;
3052
3053 /* No compression for DTLS */
3054 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3055 ret->comp_methods = SSL_COMP_get_compression_methods();
3056
3057 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3058 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3059
3060 /* Setup RFC5077 ticket keys */
3061 if ((RAND_bytes(ret->ext.tick_key_name,
3062 sizeof(ret->ext.tick_key_name)) <= 0)
3063 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
3064 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3065 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
3066 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3067 ret->options |= SSL_OP_NO_TICKET;
3068
3069 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
3070 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3071 goto err;
3072
3073#ifndef OPENSSL_NO_SRP
3074 if (!SSL_CTX_SRP_CTX_init(ret))
3075 goto err;
3076#endif
3077#ifndef OPENSSL_NO_ENGINE
3078# ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3079# define eng_strx(x) #x
3080# define eng_str(x) eng_strx(x)
3081 /* Use specific client engine automatically... ignore errors */
3082 {
3083 ENGINE *eng;
3084 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3085 if (!eng) {
3086 ERR_clear_error();
3087 ENGINE_load_builtin_engines();
3088 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3089 }
3090 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3091 ERR_clear_error();
3092 }
3093# endif
3094#endif
3095 /*
3096 * Default is to connect to non-RI servers. When RI is more widely
3097 * deployed might change this.
3098 */
3099 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3100 /*
3101 * Disable compression by default to prevent CRIME. Applications can
3102 * re-enable compression by configuring
3103 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3104 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3105 * middlebox compatibility by default. This may be disabled by default in
3106 * a later OpenSSL version.
3107 */
3108 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3109
3110 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3111
3112 /*
3113 * We cannot usefully set a default max_early_data here (which gets
3114 * propagated in SSL_new(), for the following reason: setting the
3115 * SSL field causes tls_construct_stoc_early_data() to tell the
3116 * client that early data will be accepted when constructing a TLS 1.3
3117 * session ticket, and the client will accordingly send us early data
3118 * when using that ticket (if the client has early data to send).
3119 * However, in order for the early data to actually be consumed by
3120 * the application, the application must also have calls to
3121 * SSL_read_early_data(); otherwise we'll just skip past the early data
3122 * and ignore it. So, since the application must add calls to
3123 * SSL_read_early_data(), we also require them to add
3124 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3125 * eliminating the bandwidth-wasting early data in the case described
3126 * above.
3127 */
3128 ret->max_early_data = 0;
3129
3130 /*
3131 * Default recv_max_early_data is a fully loaded single record. Could be
3132 * split across multiple records in practice. We set this differently to
3133 * max_early_data so that, in the default case, we do not advertise any
3134 * support for early_data, but if a client were to send us some (e.g.
3135 * because of an old, stale ticket) then we will tolerate it and skip over
3136 * it.
3137 */
3138 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3139
3140 /* By default we send two session tickets automatically in TLSv1.3 */
3141 ret->num_tickets = 2;
3142
3143 ssl_ctx_system_config(ret);
3144
3145 return ret;
3146 err:
3147 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3148 err2:
3149 SSL_CTX_free(ret);
3150 return NULL;
3151}
3152
3153int SSL_CTX_up_ref(SSL_CTX *ctx)
3154{
3155 int i;
3156
3157 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3158 return 0;
3159
3160 REF_PRINT_COUNT("SSL_CTX", ctx);
3161 REF_ASSERT_ISNT(i < 2);
3162 return ((i > 1) ? 1 : 0);
3163}
3164
3165void SSL_CTX_free(SSL_CTX *a)
3166{
3167 int i;
3168
3169 if (a == NULL)
3170 return;
3171
3172 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3173 REF_PRINT_COUNT("SSL_CTX", a);
3174 if (i > 0)
3175 return;
3176 REF_ASSERT_ISNT(i < 0);
3177
3178 X509_VERIFY_PARAM_free(a->param);
3179 dane_ctx_final(&a->dane);
3180
3181 /*
3182 * Free internal session cache. However: the remove_cb() may reference
3183 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3184 * after the sessions were flushed.
3185 * As the ex_data handling routines might also touch the session cache,
3186 * the most secure solution seems to be: empty (flush) the cache, then
3187 * free ex_data, then finally free the cache.
3188 * (See ticket [openssl.org #212].)
3189 */
3190 if (a->sessions != NULL)
3191 SSL_CTX_flush_sessions(a, 0);
3192
3193 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3194 lh_SSL_SESSION_free(a->sessions);
3195 X509_STORE_free(a->cert_store);
3196#ifndef OPENSSL_NO_CT
3197 CTLOG_STORE_free(a->ctlog_store);
3198#endif
3199 sk_SSL_CIPHER_free(a->cipher_list);
3200 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3201 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3202 ssl_cert_free(a->cert);
3203 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3204 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3205 sk_X509_pop_free(a->extra_certs, X509_free);
3206 a->comp_methods = NULL;
3207#ifndef OPENSSL_NO_SRTP
3208 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3209#endif
3210#ifndef OPENSSL_NO_SRP
3211 SSL_CTX_SRP_CTX_free(a);
3212#endif
3213#ifndef OPENSSL_NO_ENGINE
3214 ENGINE_finish(a->client_cert_engine);
3215#endif
3216
3217#ifndef OPENSSL_NO_EC
3218 OPENSSL_free(a->ext.ecpointformats);
3219 OPENSSL_free(a->ext.supportedgroups);
3220#endif
3221 OPENSSL_free(a->ext.alpn);
3222 OPENSSL_secure_free(a->ext.secure);
3223
3224 CRYPTO_THREAD_lock_free(a->lock);
3225
3226 OPENSSL_free(a);
3227}
3228
3229void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3230{
3231 ctx->default_passwd_callback = cb;
3232}
3233
3234void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3235{
3236 ctx->default_passwd_callback_userdata = u;
3237}
3238
3239pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3240{
3241 return ctx->default_passwd_callback;
3242}
3243
3244void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3245{
3246 return ctx->default_passwd_callback_userdata;
3247}
3248
3249void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3250{
3251 s->default_passwd_callback = cb;
3252}
3253
3254void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3255{
3256 s->default_passwd_callback_userdata = u;
3257}
3258
3259pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3260{
3261 return s->default_passwd_callback;
3262}
3263
3264void *SSL_get_default_passwd_cb_userdata(SSL *s)
3265{
3266 return s->default_passwd_callback_userdata;
3267}
3268
3269void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3270 int (*cb) (X509_STORE_CTX *, void *),
3271 void *arg)
3272{
3273 ctx->app_verify_callback = cb;
3274 ctx->app_verify_arg = arg;
3275}
3276
3277void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3278 int (*cb) (int, X509_STORE_CTX *))
3279{
3280 ctx->verify_mode = mode;
3281 ctx->default_verify_callback = cb;
3282}
3283
3284void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3285{
3286 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3287}
3288
3289void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3290{
3291 ssl_cert_set_cert_cb(c->cert, cb, arg);
3292}
3293
3294void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3295{
3296 ssl_cert_set_cert_cb(s->cert, cb, arg);
3297}
3298
3299void ssl_set_masks(SSL *s)
3300{
3301 CERT *c = s->cert;
3302 uint32_t *pvalid = s->s3->tmp.valid_flags;
3303 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3304 unsigned long mask_k, mask_a;
3305#ifndef OPENSSL_NO_EC
3306 int have_ecc_cert, ecdsa_ok;
3307#endif
3308 if (c == NULL)
3309 return;
3310
3311#ifndef OPENSSL_NO_DH
3312 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3313#else
3314 dh_tmp = 0;
3315#endif
3316
3317 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3318 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3319 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3320#ifndef OPENSSL_NO_EC
3321 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3322#endif
3323 mask_k = 0;
3324 mask_a = 0;
3325
3326#ifdef CIPHER_DEBUG
3327 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3328 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3329#endif
3330
3331#ifndef OPENSSL_NO_GOST
3332 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3333 mask_k |= SSL_kGOST;
3334 mask_a |= SSL_aGOST12;
3335 }
3336 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3337 mask_k |= SSL_kGOST;
3338 mask_a |= SSL_aGOST12;
3339 }
3340 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3341 mask_k |= SSL_kGOST;
3342 mask_a |= SSL_aGOST01;
3343 }
3344#endif
3345
3346 if (rsa_enc)
3347 mask_k |= SSL_kRSA;
3348
3349 if (dh_tmp)
3350 mask_k |= SSL_kDHE;
3351
3352 /*
3353 * If we only have an RSA-PSS certificate allow RSA authentication
3354 * if TLS 1.2 and peer supports it.
3355 */
3356
3357 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3358 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3359 && TLS1_get_version(s) == TLS1_2_VERSION))
3360 mask_a |= SSL_aRSA;
3361
3362 if (dsa_sign) {
3363 mask_a |= SSL_aDSS;
3364 }
3365
3366 mask_a |= SSL_aNULL;
3367
3368 /*
3369 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3370 * depending on the key usage extension.
3371 */
3372#ifndef OPENSSL_NO_EC
3373 if (have_ecc_cert) {
3374 uint32_t ex_kusage;
3375 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3376 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3377 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3378 ecdsa_ok = 0;
3379 if (ecdsa_ok)
3380 mask_a |= SSL_aECDSA;
3381 }
3382 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3383 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3384 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3385 && TLS1_get_version(s) == TLS1_2_VERSION)
3386 mask_a |= SSL_aECDSA;
3387
3388 /* Allow Ed448 for TLS 1.2 if peer supports it */
3389 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3390 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3391 && TLS1_get_version(s) == TLS1_2_VERSION)
3392 mask_a |= SSL_aECDSA;
3393#endif
3394
3395#ifndef OPENSSL_NO_EC
3396 mask_k |= SSL_kECDHE;
3397#endif
3398
3399#ifndef OPENSSL_NO_PSK
3400 mask_k |= SSL_kPSK;
3401 mask_a |= SSL_aPSK;
3402 if (mask_k & SSL_kRSA)
3403 mask_k |= SSL_kRSAPSK;
3404 if (mask_k & SSL_kDHE)
3405 mask_k |= SSL_kDHEPSK;
3406 if (mask_k & SSL_kECDHE)
3407 mask_k |= SSL_kECDHEPSK;
3408#endif
3409
3410 s->s3->tmp.mask_k = mask_k;
3411 s->s3->tmp.mask_a = mask_a;
3412}
3413
3414#ifndef OPENSSL_NO_EC
3415
3416int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3417{
3418 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3419 /* key usage, if present, must allow signing */
3420 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3421 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3422 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3423 return 0;
3424 }
3425 }
3426 return 1; /* all checks are ok */
3427}
3428
3429#endif
3430
3431int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3432 size_t *serverinfo_length)
3433{
3434 CERT_PKEY *cpk = s->s3->tmp.cert;
3435 *serverinfo_length = 0;
3436
3437 if (cpk == NULL || cpk->serverinfo == NULL)
3438 return 0;
3439
3440 *serverinfo = cpk->serverinfo;
3441 *serverinfo_length = cpk->serverinfo_length;
3442 return 1;
3443}
3444
3445void ssl_update_cache(SSL *s, int mode)
3446{
3447 int i;
3448
3449 /*
3450 * If the session_id_length is 0, we are not supposed to cache it, and it
3451 * would be rather hard to do anyway :-)
3452 */
3453 if (s->session->session_id_length == 0)
3454 return;
3455
3456 /*
3457 * If sid_ctx_length is 0 there is no specific application context
3458 * associated with this session, so when we try to resume it and
3459 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3460 * indication that this is actually a session for the proper application
3461 * context, and the *handshake* will fail, not just the resumption attempt.
3462 * Do not cache (on the server) these sessions that are not resumable
3463 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3464 */
3465 if (s->server && s->session->sid_ctx_length == 0
3466 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3467 return;
3468
3469 i = s->session_ctx->session_cache_mode;
3470 if ((i & mode) != 0
3471 && (!s->hit || SSL_IS_TLS13(s))) {
3472 /*
3473 * Add the session to the internal cache. In server side TLSv1.3 we
3474 * normally don't do this because by default it's a full stateless ticket
3475 * with only a dummy session id so there is no reason to cache it,
3476 * unless:
3477 * - we are doing early_data, in which case we cache so that we can
3478 * detect replays
3479 * - the application has set a remove_session_cb so needs to know about
3480 * session timeout events
3481 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3482 */
3483 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3484 && (!SSL_IS_TLS13(s)
3485 || !s->server
3486 || (s->max_early_data > 0
3487 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3488 || s->session_ctx->remove_session_cb != NULL
3489 || (s->options & SSL_OP_NO_TICKET) != 0))
3490 SSL_CTX_add_session(s->session_ctx, s->session);
3491
3492 /*
3493 * Add the session to the external cache. We do this even in server side
3494 * TLSv1.3 without early data because some applications just want to
3495 * know about the creation of a session and aren't doing a full cache.
3496 */
3497 if (s->session_ctx->new_session_cb != NULL) {
3498 SSL_SESSION_up_ref(s->session);
3499 if (!s->session_ctx->new_session_cb(s, s->session))
3500 SSL_SESSION_free(s->session);
3501 }
3502 }
3503
3504 /* auto flush every 255 connections */
3505 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3506 TSAN_QUALIFIER int *stat;
3507 if (mode & SSL_SESS_CACHE_CLIENT)
3508 stat = &s->session_ctx->stats.sess_connect_good;
3509 else
3510 stat = &s->session_ctx->stats.sess_accept_good;
3511 if ((tsan_load(stat) & 0xff) == 0xff)
3512 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3513 }
3514}
3515
3516const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3517{
3518 return ctx->method;
3519}
3520
3521const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3522{
3523 return s->method;
3524}
3525
3526int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3527{
3528 int ret = 1;
3529
3530 if (s->method != meth) {
3531 const SSL_METHOD *sm = s->method;
3532 int (*hf) (SSL *) = s->handshake_func;
3533
3534 if (sm->version == meth->version)
3535 s->method = meth;
3536 else {
3537 sm->ssl_free(s);
3538 s->method = meth;
3539 ret = s->method->ssl_new(s);
3540 }
3541
3542 if (hf == sm->ssl_connect)
3543 s->handshake_func = meth->ssl_connect;
3544 else if (hf == sm->ssl_accept)
3545 s->handshake_func = meth->ssl_accept;
3546 }
3547 return ret;
3548}
3549
3550int SSL_get_error(const SSL *s, int i)
3551{
3552 int reason;
3553 unsigned long l;
3554 BIO *bio;
3555
3556 if (i > 0)
3557 return SSL_ERROR_NONE;
3558
3559 /*
3560 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3561 * where we do encode the error
3562 */
3563 if ((l = ERR_peek_error()) != 0) {
3564 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3565 return SSL_ERROR_SYSCALL;
3566 else
3567 return SSL_ERROR_SSL;
3568 }
3569
3570 if (SSL_want_read(s)) {
3571 bio = SSL_get_rbio(s);
3572 if (BIO_should_read(bio))
3573 return SSL_ERROR_WANT_READ;
3574 else if (BIO_should_write(bio))
3575 /*
3576 * This one doesn't make too much sense ... We never try to write
3577 * to the rbio, and an application program where rbio and wbio
3578 * are separate couldn't even know what it should wait for.
3579 * However if we ever set s->rwstate incorrectly (so that we have
3580 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3581 * wbio *are* the same, this test works around that bug; so it
3582 * might be safer to keep it.
3583 */
3584 return SSL_ERROR_WANT_WRITE;
3585 else if (BIO_should_io_special(bio)) {
3586 reason = BIO_get_retry_reason(bio);
3587 if (reason == BIO_RR_CONNECT)
3588 return SSL_ERROR_WANT_CONNECT;
3589 else if (reason == BIO_RR_ACCEPT)
3590 return SSL_ERROR_WANT_ACCEPT;
3591 else
3592 return SSL_ERROR_SYSCALL; /* unknown */
3593 }
3594 }
3595
3596 if (SSL_want_write(s)) {
3597 /* Access wbio directly - in order to use the buffered bio if present */
3598 bio = s->wbio;
3599 if (BIO_should_write(bio))
3600 return SSL_ERROR_WANT_WRITE;
3601 else if (BIO_should_read(bio))
3602 /*
3603 * See above (SSL_want_read(s) with BIO_should_write(bio))
3604 */
3605 return SSL_ERROR_WANT_READ;
3606 else if (BIO_should_io_special(bio)) {
3607 reason = BIO_get_retry_reason(bio);
3608 if (reason == BIO_RR_CONNECT)
3609 return SSL_ERROR_WANT_CONNECT;
3610 else if (reason == BIO_RR_ACCEPT)
3611 return SSL_ERROR_WANT_ACCEPT;
3612 else
3613 return SSL_ERROR_SYSCALL;
3614 }
3615 }
3616 if (SSL_want_x509_lookup(s))
3617 return SSL_ERROR_WANT_X509_LOOKUP;
3618 if (SSL_want_async(s))
3619 return SSL_ERROR_WANT_ASYNC;
3620 if (SSL_want_async_job(s))
3621 return SSL_ERROR_WANT_ASYNC_JOB;
3622 if (SSL_want_client_hello_cb(s))
3623 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3624
3625 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3626 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3627 return SSL_ERROR_ZERO_RETURN;
3628
3629 return SSL_ERROR_SYSCALL;
3630}
3631
3632static int ssl_do_handshake_intern(void *vargs)
3633{
3634 struct ssl_async_args *args;
3635 SSL *s;
3636
3637 args = (struct ssl_async_args *)vargs;
3638 s = args->s;
3639
3640 return s->handshake_func(s);
3641}
3642
3643int SSL_do_handshake(SSL *s)
3644{
3645 int ret = 1;
3646
3647 if (s->handshake_func == NULL) {
3648 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3649 return -1;
3650 }
3651
3652 ossl_statem_check_finish_init(s, -1);
3653
3654 s->method->ssl_renegotiate_check(s, 0);
3655
3656 if (SSL_in_init(s) || SSL_in_before(s)) {
3657 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3658 struct ssl_async_args args;
3659
3660 args.s = s;
3661
3662 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3663 } else {
3664 ret = s->handshake_func(s);
3665 }
3666 }
3667 return ret;
3668}
3669
3670void SSL_set_accept_state(SSL *s)
3671{
3672 s->server = 1;
3673 s->shutdown = 0;
3674 ossl_statem_clear(s);
3675 s->handshake_func = s->method->ssl_accept;
3676 clear_ciphers(s);
3677}
3678
3679void SSL_set_connect_state(SSL *s)
3680{
3681 s->server = 0;
3682 s->shutdown = 0;
3683 ossl_statem_clear(s);
3684 s->handshake_func = s->method->ssl_connect;
3685 clear_ciphers(s);
3686}
3687
3688int ssl_undefined_function(SSL *s)
3689{
3690 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3691 return 0;
3692}
3693
3694int ssl_undefined_void_function(void)
3695{
3696 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3697 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3698 return 0;
3699}
3700
3701int ssl_undefined_const_function(const SSL *s)
3702{
3703 return 0;
3704}
3705
3706const SSL_METHOD *ssl_bad_method(int ver)
3707{
3708 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3709 return NULL;
3710}
3711
3712const char *ssl_protocol_to_string(int version)
3713{
3714 switch(version)
3715 {
3716 case TLS1_3_VERSION:
3717 return "TLSv1.3";
3718
3719 case TLS1_2_VERSION:
3720 return "TLSv1.2";
3721
3722 case TLS1_1_VERSION:
3723 return "TLSv1.1";
3724
3725 case TLS1_VERSION:
3726 return "TLSv1";
3727
3728 case SSL3_VERSION:
3729 return "SSLv3";
3730
3731 case DTLS1_BAD_VER:
3732 return "DTLSv0.9";
3733
3734 case DTLS1_VERSION:
3735 return "DTLSv1";
3736
3737 case DTLS1_2_VERSION:
3738 return "DTLSv1.2";
3739
3740 default:
3741 return "unknown";
3742 }
3743}
3744
3745const char *SSL_get_version(const SSL *s)
3746{
3747 return ssl_protocol_to_string(s->version);
3748}
3749
3750static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3751{
3752 STACK_OF(X509_NAME) *sk;
3753 X509_NAME *xn;
3754 int i;
3755
3756 if (src == NULL) {
3757 *dst = NULL;
3758 return 1;
3759 }
3760
3761 if ((sk = sk_X509_NAME_new_null()) == NULL)
3762 return 0;
3763 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3764 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3765 if (xn == NULL) {
3766 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3767 return 0;
3768 }
3769 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3770 X509_NAME_free(xn);
3771 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3772 return 0;
3773 }
3774 }
3775 *dst = sk;
3776
3777 return 1;
3778}
3779
3780SSL *SSL_dup(SSL *s)
3781{
3782 SSL *ret;
3783 int i;
3784
3785 /* If we're not quiescent, just up_ref! */
3786 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3787 CRYPTO_UP_REF(&s->references, &i, s->lock);
3788 return s;
3789 }
3790
3791 /*
3792 * Otherwise, copy configuration state, and session if set.
3793 */
3794 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3795 return NULL;
3796
3797 if (s->session != NULL) {
3798 /*
3799 * Arranges to share the same session via up_ref. This "copies"
3800 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3801 */
3802 if (!SSL_copy_session_id(ret, s))
3803 goto err;
3804 } else {
3805 /*
3806 * No session has been established yet, so we have to expect that
3807 * s->cert or ret->cert will be changed later -- they should not both
3808 * point to the same object, and thus we can't use
3809 * SSL_copy_session_id.
3810 */
3811 if (!SSL_set_ssl_method(ret, s->method))
3812 goto err;
3813
3814 if (s->cert != NULL) {
3815 ssl_cert_free(ret->cert);
3816 ret->cert = ssl_cert_dup(s->cert);
3817 if (ret->cert == NULL)
3818 goto err;
3819 }
3820
3821 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3822 (int)s->sid_ctx_length))
3823 goto err;
3824 }
3825
3826 if (!ssl_dane_dup(ret, s))
3827 goto err;
3828 ret->version = s->version;
3829 ret->options = s->options;
3830 ret->min_proto_version = s->min_proto_version;
3831 ret->max_proto_version = s->max_proto_version;
3832 ret->mode = s->mode;
3833 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3834 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3835 ret->msg_callback = s->msg_callback;
3836 ret->msg_callback_arg = s->msg_callback_arg;
3837 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3838 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3839 ret->generate_session_id = s->generate_session_id;
3840
3841 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3842
3843 /* copy app data, a little dangerous perhaps */
3844 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3845 goto err;
3846
3847 ret->server = s->server;
3848 if (s->handshake_func) {
3849 if (s->server)
3850 SSL_set_accept_state(ret);
3851 else
3852 SSL_set_connect_state(ret);
3853 }
3854 ret->shutdown = s->shutdown;
3855 ret->hit = s->hit;
3856
3857 ret->default_passwd_callback = s->default_passwd_callback;
3858 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3859
3860 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3861
3862 /* dup the cipher_list and cipher_list_by_id stacks */
3863 if (s->cipher_list != NULL) {
3864 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3865 goto err;
3866 }
3867 if (s->cipher_list_by_id != NULL)
3868 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3869 == NULL)
3870 goto err;
3871
3872 /* Dup the client_CA list */
3873 if (!dup_ca_names(&ret->ca_names, s->ca_names)
3874 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
3875 goto err;
3876
3877 return ret;
3878
3879 err:
3880 SSL_free(ret);
3881 return NULL;
3882}
3883
3884void ssl_clear_cipher_ctx(SSL *s)
3885{
3886 if (s->enc_read_ctx != NULL) {
3887 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3888 s->enc_read_ctx = NULL;
3889 }
3890 if (s->enc_write_ctx != NULL) {
3891 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3892 s->enc_write_ctx = NULL;
3893 }
3894#ifndef OPENSSL_NO_COMP
3895 COMP_CTX_free(s->expand);
3896 s->expand = NULL;
3897 COMP_CTX_free(s->compress);
3898 s->compress = NULL;
3899#endif
3900}
3901
3902X509 *SSL_get_certificate(const SSL *s)
3903{
3904 if (s->cert != NULL)
3905 return s->cert->key->x509;
3906 else
3907 return NULL;
3908}
3909
3910EVP_PKEY *SSL_get_privatekey(const SSL *s)
3911{
3912 if (s->cert != NULL)
3913 return s->cert->key->privatekey;
3914 else
3915 return NULL;
3916}
3917
3918X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
3919{
3920 if (ctx->cert != NULL)
3921 return ctx->cert->key->x509;
3922 else
3923 return NULL;
3924}
3925
3926EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
3927{
3928 if (ctx->cert != NULL)
3929 return ctx->cert->key->privatekey;
3930 else
3931 return NULL;
3932}
3933
3934const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
3935{
3936 if ((s->session != NULL) && (s->session->cipher != NULL))
3937 return s->session->cipher;
3938 return NULL;
3939}
3940
3941const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
3942{
3943 return s->s3->tmp.new_cipher;
3944}
3945
3946const COMP_METHOD *SSL_get_current_compression(const SSL *s)
3947{
3948#ifndef OPENSSL_NO_COMP
3949 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
3950#else
3951 return NULL;
3952#endif
3953}
3954
3955const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
3956{
3957#ifndef OPENSSL_NO_COMP
3958 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
3959#else
3960 return NULL;
3961#endif
3962}
3963
3964int ssl_init_wbio_buffer(SSL *s)
3965{
3966 BIO *bbio;
3967
3968 if (s->bbio != NULL) {
3969 /* Already buffered. */
3970 return 1;
3971 }
3972
3973 bbio = BIO_new(BIO_f_buffer());
3974 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
3975 BIO_free(bbio);
3976 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
3977 return 0;
3978 }
3979 s->bbio = bbio;
3980 s->wbio = BIO_push(bbio, s->wbio);
3981
3982 return 1;
3983}
3984
3985int ssl_free_wbio_buffer(SSL *s)
3986{
3987 /* callers ensure s is never null */
3988 if (s->bbio == NULL)
3989 return 1;
3990
3991 s->wbio = BIO_pop(s->wbio);
3992 BIO_free(s->bbio);
3993 s->bbio = NULL;
3994
3995 return 1;
3996}
3997
3998void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
3999{
4000 ctx->quiet_shutdown = mode;
4001}
4002
4003int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4004{
4005 return ctx->quiet_shutdown;
4006}
4007
4008void SSL_set_quiet_shutdown(SSL *s, int mode)
4009{
4010 s->quiet_shutdown = mode;
4011}
4012
4013int SSL_get_quiet_shutdown(const SSL *s)
4014{
4015 return s->quiet_shutdown;
4016}
4017
4018void SSL_set_shutdown(SSL *s, int mode)
4019{
4020 s->shutdown = mode;
4021}
4022
4023int SSL_get_shutdown(const SSL *s)
4024{
4025 return s->shutdown;
4026}
4027
4028int SSL_version(const SSL *s)
4029{
4030 return s->version;
4031}
4032
4033int SSL_client_version(const SSL *s)
4034{
4035 return s->client_version;
4036}
4037
4038SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4039{
4040 return ssl->ctx;
4041}
4042
4043SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4044{
4045 CERT *new_cert;
4046 if (ssl->ctx == ctx)
4047 return ssl->ctx;
4048 if (ctx == NULL)
4049 ctx = ssl->session_ctx;
4050 new_cert = ssl_cert_dup(ctx->cert);
4051 if (new_cert == NULL) {
4052 return NULL;
4053 }
4054
4055 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4056 ssl_cert_free(new_cert);
4057 return NULL;
4058 }
4059
4060 ssl_cert_free(ssl->cert);
4061 ssl->cert = new_cert;
4062
4063 /*
4064 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4065 * so setter APIs must prevent invalid lengths from entering the system.
4066 */
4067 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4068 return NULL;
4069
4070 /*
4071 * If the session ID context matches that of the parent SSL_CTX,
4072 * inherit it from the new SSL_CTX as well. If however the context does
4073 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4074 * leave it unchanged.
4075 */
4076 if ((ssl->ctx != NULL) &&
4077 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4078 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4079 ssl->sid_ctx_length = ctx->sid_ctx_length;
4080 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4081 }
4082
4083 SSL_CTX_up_ref(ctx);
4084 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4085 ssl->ctx = ctx;
4086
4087 return ssl->ctx;
4088}
4089
4090int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4091{
4092 return X509_STORE_set_default_paths(ctx->cert_store);
4093}
4094
4095int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4096{
4097 X509_LOOKUP *lookup;
4098
4099 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4100 if (lookup == NULL)
4101 return 0;
4102 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4103
4104 /* Clear any errors if the default directory does not exist */
4105 ERR_clear_error();
4106
4107 return 1;
4108}
4109
4110int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4111{
4112 X509_LOOKUP *lookup;
4113
4114 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4115 if (lookup == NULL)
4116 return 0;
4117
4118 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4119
4120 /* Clear any errors if the default file does not exist */
4121 ERR_clear_error();
4122
4123 return 1;
4124}
4125
4126int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4127 const char *CApath)
4128{
4129 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
4130}
4131
4132void SSL_set_info_callback(SSL *ssl,
4133 void (*cb) (const SSL *ssl, int type, int val))
4134{
4135 ssl->info_callback = cb;
4136}
4137
4138/*
4139 * One compiler (Diab DCC) doesn't like argument names in returned function
4140 * pointer.
4141 */
4142void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4143 int /* type */ ,
4144 int /* val */ ) {
4145 return ssl->info_callback;
4146}
4147
4148void SSL_set_verify_result(SSL *ssl, long arg)
4149{
4150 ssl->verify_result = arg;
4151}
4152
4153long SSL_get_verify_result(const SSL *ssl)
4154{
4155 return ssl->verify_result;
4156}
4157
4158size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4159{
4160 if (outlen == 0)
4161 return sizeof(ssl->s3->client_random);
4162 if (outlen > sizeof(ssl->s3->client_random))
4163 outlen = sizeof(ssl->s3->client_random);
4164 memcpy(out, ssl->s3->client_random, outlen);
4165 return outlen;
4166}
4167
4168size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4169{
4170 if (outlen == 0)
4171 return sizeof(ssl->s3->server_random);
4172 if (outlen > sizeof(ssl->s3->server_random))
4173 outlen = sizeof(ssl->s3->server_random);
4174 memcpy(out, ssl->s3->server_random, outlen);
4175 return outlen;
4176}
4177
4178size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4179 unsigned char *out, size_t outlen)
4180{
4181 if (outlen == 0)
4182 return session->master_key_length;
4183 if (outlen > session->master_key_length)
4184 outlen = session->master_key_length;
4185 memcpy(out, session->master_key, outlen);
4186 return outlen;
4187}
4188
4189int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4190 size_t len)
4191{
4192 if (len > sizeof(sess->master_key))
4193 return 0;
4194
4195 memcpy(sess->master_key, in, len);
4196 sess->master_key_length = len;
4197 return 1;
4198}
4199
4200
4201int SSL_set_ex_data(SSL *s, int idx, void *arg)
4202{
4203 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4204}
4205
4206void *SSL_get_ex_data(const SSL *s, int idx)
4207{
4208 return CRYPTO_get_ex_data(&s->ex_data, idx);
4209}
4210
4211int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4212{
4213 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4214}
4215
4216void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4217{
4218 return CRYPTO_get_ex_data(&s->ex_data, idx);
4219}
4220
4221X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4222{
4223 return ctx->cert_store;
4224}
4225
4226void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4227{
4228 X509_STORE_free(ctx->cert_store);
4229 ctx->cert_store = store;
4230}
4231
4232void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4233{
4234 if (store != NULL)
4235 X509_STORE_up_ref(store);
4236 SSL_CTX_set_cert_store(ctx, store);
4237}
4238
4239int SSL_want(const SSL *s)
4240{
4241 return s->rwstate;
4242}
4243
4244/**
4245 * \brief Set the callback for generating temporary DH keys.
4246 * \param ctx the SSL context.
4247 * \param dh the callback
4248 */
4249
4250#ifndef OPENSSL_NO_DH
4251void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4252 DH *(*dh) (SSL *ssl, int is_export,
4253 int keylength))
4254{
4255 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4256}
4257
4258void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4259 int keylength))
4260{
4261 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4262}
4263#endif
4264
4265#ifndef OPENSSL_NO_PSK
4266int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4267{
4268 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4269 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4270 return 0;
4271 }
4272 OPENSSL_free(ctx->cert->psk_identity_hint);
4273 if (identity_hint != NULL) {
4274 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4275 if (ctx->cert->psk_identity_hint == NULL)
4276 return 0;
4277 } else
4278 ctx->cert->psk_identity_hint = NULL;
4279 return 1;
4280}
4281
4282int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4283{
4284 if (s == NULL)
4285 return 0;
4286
4287 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4288 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4289 return 0;
4290 }
4291 OPENSSL_free(s->cert->psk_identity_hint);
4292 if (identity_hint != NULL) {
4293 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4294 if (s->cert->psk_identity_hint == NULL)
4295 return 0;
4296 } else
4297 s->cert->psk_identity_hint = NULL;
4298 return 1;
4299}
4300
4301const char *SSL_get_psk_identity_hint(const SSL *s)
4302{
4303 if (s == NULL || s->session == NULL)
4304 return NULL;
4305 return s->session->psk_identity_hint;
4306}
4307
4308const char *SSL_get_psk_identity(const SSL *s)
4309{
4310 if (s == NULL || s->session == NULL)
4311 return NULL;
4312 return s->session->psk_identity;
4313}
4314
4315void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4316{
4317 s->psk_client_callback = cb;
4318}
4319
4320void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4321{
4322 ctx->psk_client_callback = cb;
4323}
4324
4325void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4326{
4327 s->psk_server_callback = cb;
4328}
4329
4330void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4331{
4332 ctx->psk_server_callback = cb;
4333}
4334#endif
4335
4336void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4337{
4338 s->psk_find_session_cb = cb;
4339}
4340
4341void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4342 SSL_psk_find_session_cb_func cb)
4343{
4344 ctx->psk_find_session_cb = cb;
4345}
4346
4347void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4348{
4349 s->psk_use_session_cb = cb;
4350}
4351
4352void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4353 SSL_psk_use_session_cb_func cb)
4354{
4355 ctx->psk_use_session_cb = cb;
4356}
4357
4358void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4359 void (*cb) (int write_p, int version,
4360 int content_type, const void *buf,
4361 size_t len, SSL *ssl, void *arg))
4362{
4363 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4364}
4365
4366void SSL_set_msg_callback(SSL *ssl,
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_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4372}
4373
4374void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4375 int (*cb) (SSL *ssl,
4376 int
4377 is_forward_secure))
4378{
4379 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4380 (void (*)(void))cb);
4381}
4382
4383void SSL_set_not_resumable_session_callback(SSL *ssl,
4384 int (*cb) (SSL *ssl,
4385 int is_forward_secure))
4386{
4387 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4388 (void (*)(void))cb);
4389}
4390
4391void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4392 size_t (*cb) (SSL *ssl, int type,
4393 size_t len, void *arg))
4394{
4395 ctx->record_padding_cb = cb;
4396}
4397
4398void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4399{
4400 ctx->record_padding_arg = arg;
4401}
4402
4403void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4404{
4405 return ctx->record_padding_arg;
4406}
4407
4408int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4409{
4410 /* block size of 0 or 1 is basically no padding */
4411 if (block_size == 1)
4412 ctx->block_padding = 0;
4413 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4414 ctx->block_padding = block_size;
4415 else
4416 return 0;
4417 return 1;
4418}
4419
4420void SSL_set_record_padding_callback(SSL *ssl,
4421 size_t (*cb) (SSL *ssl, int type,
4422 size_t len, void *arg))
4423{
4424 ssl->record_padding_cb = cb;
4425}
4426
4427void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4428{
4429 ssl->record_padding_arg = arg;
4430}
4431
4432void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4433{
4434 return ssl->record_padding_arg;
4435}
4436
4437int SSL_set_block_padding(SSL *ssl, size_t block_size)
4438{
4439 /* block size of 0 or 1 is basically no padding */
4440 if (block_size == 1)
4441 ssl->block_padding = 0;
4442 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4443 ssl->block_padding = block_size;
4444 else
4445 return 0;
4446 return 1;
4447}
4448
4449int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4450{
4451 s->num_tickets = num_tickets;
4452
4453 return 1;
4454}
4455
4456size_t SSL_get_num_tickets(const SSL *s)
4457{
4458 return s->num_tickets;
4459}
4460
4461int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4462{
4463 ctx->num_tickets = num_tickets;
4464
4465 return 1;
4466}
4467
4468size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4469{
4470 return ctx->num_tickets;
4471}
4472
4473/*
4474 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4475 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4476 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4477 * Returns the newly allocated ctx;
4478 */
4479
4480EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4481{
4482 ssl_clear_hash_ctx(hash);
4483 *hash = EVP_MD_CTX_new();
4484 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4485 EVP_MD_CTX_free(*hash);
4486 *hash = NULL;
4487 return NULL;
4488 }
4489 return *hash;
4490}
4491
4492void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4493{
4494
4495 EVP_MD_CTX_free(*hash);
4496 *hash = NULL;
4497}
4498
4499/* Retrieve handshake hashes */
4500int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4501 size_t *hashlen)
4502{
4503 EVP_MD_CTX *ctx = NULL;
4504 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4505 int hashleni = EVP_MD_CTX_size(hdgst);
4506 int ret = 0;
4507
4508 if (hashleni < 0 || (size_t)hashleni > outlen) {
4509 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4510 ERR_R_INTERNAL_ERROR);
4511 goto err;
4512 }
4513
4514 ctx = EVP_MD_CTX_new();
4515 if (ctx == NULL)
4516 goto err;
4517
4518 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4519 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4520 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4521 ERR_R_INTERNAL_ERROR);
4522 goto err;
4523 }
4524
4525 *hashlen = hashleni;
4526
4527 ret = 1;
4528 err:
4529 EVP_MD_CTX_free(ctx);
4530 return ret;
4531}
4532
4533int SSL_session_reused(const SSL *s)
4534{
4535 return s->hit;
4536}
4537
4538int SSL_is_server(const SSL *s)
4539{
4540 return s->server;
4541}
4542
4543#if OPENSSL_API_COMPAT < 0x10100000L
4544void SSL_set_debug(SSL *s, int debug)
4545{
4546 /* Old function was do-nothing anyway... */
4547 (void)s;
4548 (void)debug;
4549}
4550#endif
4551
4552void SSL_set_security_level(SSL *s, int level)
4553{
4554 s->cert->sec_level = level;
4555}
4556
4557int SSL_get_security_level(const SSL *s)
4558{
4559 return s->cert->sec_level;
4560}
4561
4562void SSL_set_security_callback(SSL *s,
4563 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4564 int op, int bits, int nid,
4565 void *other, void *ex))
4566{
4567 s->cert->sec_cb = cb;
4568}
4569
4570int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4571 const SSL_CTX *ctx, int op,
4572 int bits, int nid, void *other,
4573 void *ex) {
4574 return s->cert->sec_cb;
4575}
4576
4577void SSL_set0_security_ex_data(SSL *s, void *ex)
4578{
4579 s->cert->sec_ex = ex;
4580}
4581
4582void *SSL_get0_security_ex_data(const SSL *s)
4583{
4584 return s->cert->sec_ex;
4585}
4586
4587void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4588{
4589 ctx->cert->sec_level = level;
4590}
4591
4592int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4593{
4594 return ctx->cert->sec_level;
4595}
4596
4597void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4598 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4599 int op, int bits, int nid,
4600 void *other, void *ex))
4601{
4602 ctx->cert->sec_cb = cb;
4603}
4604
4605int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4606 const SSL_CTX *ctx,
4607 int op, int bits,
4608 int nid,
4609 void *other,
4610 void *ex) {
4611 return ctx->cert->sec_cb;
4612}
4613
4614void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4615{
4616 ctx->cert->sec_ex = ex;
4617}
4618
4619void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4620{
4621 return ctx->cert->sec_ex;
4622}
4623
4624/*
4625 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4626 * can return unsigned long, instead of the generic long return value from the
4627 * control interface.
4628 */
4629unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4630{
4631 return ctx->options;
4632}
4633
4634unsigned long SSL_get_options(const SSL *s)
4635{
4636 return s->options;
4637}
4638
4639unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4640{
4641 return ctx->options |= op;
4642}
4643
4644unsigned long SSL_set_options(SSL *s, unsigned long op)
4645{
4646 return s->options |= op;
4647}
4648
4649unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4650{
4651 return ctx->options &= ~op;
4652}
4653
4654unsigned long SSL_clear_options(SSL *s, unsigned long op)
4655{
4656 return s->options &= ~op;
4657}
4658
4659STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4660{
4661 return s->verified_chain;
4662}
4663
4664IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4665
4666#ifndef OPENSSL_NO_CT
4667
4668/*
4669 * Moves SCTs from the |src| stack to the |dst| stack.
4670 * The source of each SCT will be set to |origin|.
4671 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4672 * the caller.
4673 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4674 */
4675static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4676 sct_source_t origin)
4677{
4678 int scts_moved = 0;
4679 SCT *sct = NULL;
4680
4681 if (*dst == NULL) {
4682 *dst = sk_SCT_new_null();
4683 if (*dst == NULL) {
4684 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4685 goto err;
4686 }
4687 }
4688
4689 while ((sct = sk_SCT_pop(src)) != NULL) {
4690 if (SCT_set_source(sct, origin) != 1)
4691 goto err;
4692
4693 if (sk_SCT_push(*dst, sct) <= 0)
4694 goto err;
4695 scts_moved += 1;
4696 }
4697
4698 return scts_moved;
4699 err:
4700 if (sct != NULL)
4701 sk_SCT_push(src, sct); /* Put the SCT back */
4702 return -1;
4703}
4704
4705/*
4706 * Look for data collected during ServerHello and parse if found.
4707 * Returns the number of SCTs extracted.
4708 */
4709static int ct_extract_tls_extension_scts(SSL *s)
4710{
4711 int scts_extracted = 0;
4712
4713 if (s->ext.scts != NULL) {
4714 const unsigned char *p = s->ext.scts;
4715 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4716
4717 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4718
4719 SCT_LIST_free(scts);
4720 }
4721
4722 return scts_extracted;
4723}
4724
4725/*
4726 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4727 * contains an SCT X509 extension. They will be stored in |s->scts|.
4728 * Returns:
4729 * - The number of SCTs extracted, assuming an OCSP response exists.
4730 * - 0 if no OCSP response exists or it contains no SCTs.
4731 * - A negative integer if an error occurs.
4732 */
4733static int ct_extract_ocsp_response_scts(SSL *s)
4734{
4735# ifndef OPENSSL_NO_OCSP
4736 int scts_extracted = 0;
4737 const unsigned char *p;
4738 OCSP_BASICRESP *br = NULL;
4739 OCSP_RESPONSE *rsp = NULL;
4740 STACK_OF(SCT) *scts = NULL;
4741 int i;
4742
4743 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4744 goto err;
4745
4746 p = s->ext.ocsp.resp;
4747 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4748 if (rsp == NULL)
4749 goto err;
4750
4751 br = OCSP_response_get1_basic(rsp);
4752 if (br == NULL)
4753 goto err;
4754
4755 for (i = 0; i < OCSP_resp_count(br); ++i) {
4756 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4757
4758 if (single == NULL)
4759 continue;
4760
4761 scts =
4762 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4763 scts_extracted =
4764 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4765 if (scts_extracted < 0)
4766 goto err;
4767 }
4768 err:
4769 SCT_LIST_free(scts);
4770 OCSP_BASICRESP_free(br);
4771 OCSP_RESPONSE_free(rsp);
4772 return scts_extracted;
4773# else
4774 /* Behave as if no OCSP response exists */
4775 return 0;
4776# endif
4777}
4778
4779/*
4780 * Attempts to extract SCTs from the peer certificate.
4781 * Return the number of SCTs extracted, or a negative integer if an error
4782 * occurs.
4783 */
4784static int ct_extract_x509v3_extension_scts(SSL *s)
4785{
4786 int scts_extracted = 0;
4787 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4788
4789 if (cert != NULL) {
4790 STACK_OF(SCT) *scts =
4791 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4792
4793 scts_extracted =
4794 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4795
4796 SCT_LIST_free(scts);
4797 }
4798
4799 return scts_extracted;
4800}
4801
4802/*
4803 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4804 * response (if it exists) and X509v3 extensions in the certificate.
4805 * Returns NULL if an error occurs.
4806 */
4807const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4808{
4809 if (!s->scts_parsed) {
4810 if (ct_extract_tls_extension_scts(s) < 0 ||
4811 ct_extract_ocsp_response_scts(s) < 0 ||
4812 ct_extract_x509v3_extension_scts(s) < 0)
4813 goto err;
4814
4815 s->scts_parsed = 1;
4816 }
4817 return s->scts;
4818 err:
4819 return NULL;
4820}
4821
4822static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4823 const STACK_OF(SCT) *scts, void *unused_arg)
4824{
4825 return 1;
4826}
4827
4828static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4829 const STACK_OF(SCT) *scts, void *unused_arg)
4830{
4831 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4832 int i;
4833
4834 for (i = 0; i < count; ++i) {
4835 SCT *sct = sk_SCT_value(scts, i);
4836 int status = SCT_get_validation_status(sct);
4837
4838 if (status == SCT_VALIDATION_STATUS_VALID)
4839 return 1;
4840 }
4841 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4842 return 0;
4843}
4844
4845int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4846 void *arg)
4847{
4848 /*
4849 * Since code exists that uses the custom extension handler for CT, look
4850 * for this and throw an error if they have already registered to use CT.
4851 */
4852 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4853 TLSEXT_TYPE_signed_certificate_timestamp))
4854 {
4855 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4856 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4857 return 0;
4858 }
4859
4860 if (callback != NULL) {
4861 /*
4862 * If we are validating CT, then we MUST accept SCTs served via OCSP
4863 */
4864 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
4865 return 0;
4866 }
4867
4868 s->ct_validation_callback = callback;
4869 s->ct_validation_callback_arg = arg;
4870
4871 return 1;
4872}
4873
4874int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
4875 ssl_ct_validation_cb callback, void *arg)
4876{
4877 /*
4878 * Since code exists that uses the custom extension handler for CT, look for
4879 * this and throw an error if they have already registered to use CT.
4880 */
4881 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
4882 TLSEXT_TYPE_signed_certificate_timestamp))
4883 {
4884 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
4885 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
4886 return 0;
4887 }
4888
4889 ctx->ct_validation_callback = callback;
4890 ctx->ct_validation_callback_arg = arg;
4891 return 1;
4892}
4893
4894int SSL_ct_is_enabled(const SSL *s)
4895{
4896 return s->ct_validation_callback != NULL;
4897}
4898
4899int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
4900{
4901 return ctx->ct_validation_callback != NULL;
4902}
4903
4904int ssl_validate_ct(SSL *s)
4905{
4906 int ret = 0;
4907 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4908 X509 *issuer;
4909 SSL_DANE *dane = &s->dane;
4910 CT_POLICY_EVAL_CTX *ctx = NULL;
4911 const STACK_OF(SCT) *scts;
4912
4913 /*
4914 * If no callback is set, the peer is anonymous, or its chain is invalid,
4915 * skip SCT validation - just return success. Applications that continue
4916 * handshakes without certificates, with unverified chains, or pinned leaf
4917 * certificates are outside the scope of the WebPKI and CT.
4918 *
4919 * The above exclusions notwithstanding the vast majority of peers will
4920 * have rather ordinary certificate chains validated by typical
4921 * applications that perform certificate verification and therefore will
4922 * process SCTs when enabled.
4923 */
4924 if (s->ct_validation_callback == NULL || cert == NULL ||
4925 s->verify_result != X509_V_OK ||
4926 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
4927 return 1;
4928
4929 /*
4930 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
4931 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
4932 */
4933 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
4934 switch (dane->mtlsa->usage) {
4935 case DANETLS_USAGE_DANE_TA:
4936 case DANETLS_USAGE_DANE_EE:
4937 return 1;
4938 }
4939 }
4940
4941 ctx = CT_POLICY_EVAL_CTX_new();
4942 if (ctx == NULL) {
4943 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
4944 ERR_R_MALLOC_FAILURE);
4945 goto end;
4946 }
4947
4948 issuer = sk_X509_value(s->verified_chain, 1);
4949 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
4950 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
4951 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
4952 CT_POLICY_EVAL_CTX_set_time(
4953 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
4954
4955 scts = SSL_get0_peer_scts(s);
4956
4957 /*
4958 * This function returns success (> 0) only when all the SCTs are valid, 0
4959 * when some are invalid, and < 0 on various internal errors (out of
4960 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
4961 * reason to abort the handshake, that decision is up to the callback.
4962 * Therefore, we error out only in the unexpected case that the return
4963 * value is negative.
4964 *
4965 * XXX: One might well argue that the return value of this function is an
4966 * unfortunate design choice. Its job is only to determine the validation
4967 * status of each of the provided SCTs. So long as it correctly separates
4968 * the wheat from the chaff it should return success. Failure in this case
4969 * ought to correspond to an inability to carry out its duties.
4970 */
4971 if (SCT_LIST_validate(scts, ctx) < 0) {
4972 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4973 SSL_R_SCT_VERIFICATION_FAILED);
4974 goto end;
4975 }
4976
4977 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
4978 if (ret < 0)
4979 ret = 0; /* This function returns 0 on failure */
4980 if (!ret)
4981 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
4982 SSL_R_CALLBACK_FAILED);
4983
4984 end:
4985 CT_POLICY_EVAL_CTX_free(ctx);
4986 /*
4987 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
4988 * failure return code here. Also the application may wish the complete
4989 * the handshake, and then disconnect cleanly at a higher layer, after
4990 * checking the verification status of the completed connection.
4991 *
4992 * We therefore force a certificate verification failure which will be
4993 * visible via SSL_get_verify_result() and cached as part of any resumed
4994 * session.
4995 *
4996 * Note: the permissive callback is for information gathering only, always
4997 * returns success, and does not affect verification status. Only the
4998 * strict callback or a custom application-specified callback can trigger
4999 * connection failure or record a verification error.
5000 */
5001 if (ret <= 0)
5002 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5003 return ret;
5004}
5005
5006int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5007{
5008 switch (validation_mode) {
5009 default:
5010 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5011 return 0;
5012 case SSL_CT_VALIDATION_PERMISSIVE:
5013 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5014 case SSL_CT_VALIDATION_STRICT:
5015 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5016 }
5017}
5018
5019int SSL_enable_ct(SSL *s, int validation_mode)
5020{
5021 switch (validation_mode) {
5022 default:
5023 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5024 return 0;
5025 case SSL_CT_VALIDATION_PERMISSIVE:
5026 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5027 case SSL_CT_VALIDATION_STRICT:
5028 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5029 }
5030}
5031
5032int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5033{
5034 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5035}
5036
5037int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5038{
5039 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5040}
5041
5042void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5043{
5044 CTLOG_STORE_free(ctx->ctlog_store);
5045 ctx->ctlog_store = logs;
5046}
5047
5048const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5049{
5050 return ctx->ctlog_store;
5051}
5052
5053#endif /* OPENSSL_NO_CT */
5054
5055void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5056 void *arg)
5057{
5058 c->client_hello_cb = cb;
5059 c->client_hello_cb_arg = arg;
5060}
5061
5062int SSL_client_hello_isv2(SSL *s)
5063{
5064 if (s->clienthello == NULL)
5065 return 0;
5066 return s->clienthello->isv2;
5067}
5068
5069unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5070{
5071 if (s->clienthello == NULL)
5072 return 0;
5073 return s->clienthello->legacy_version;
5074}
5075
5076size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5077{
5078 if (s->clienthello == NULL)
5079 return 0;
5080 if (out != NULL)
5081 *out = s->clienthello->random;
5082 return SSL3_RANDOM_SIZE;
5083}
5084
5085size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5086{
5087 if (s->clienthello == NULL)
5088 return 0;
5089 if (out != NULL)
5090 *out = s->clienthello->session_id;
5091 return s->clienthello->session_id_len;
5092}
5093
5094size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5095{
5096 if (s->clienthello == NULL)
5097 return 0;
5098 if (out != NULL)
5099 *out = PACKET_data(&s->clienthello->ciphersuites);
5100 return PACKET_remaining(&s->clienthello->ciphersuites);
5101}
5102
5103size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5104{
5105 if (s->clienthello == NULL)
5106 return 0;
5107 if (out != NULL)
5108 *out = s->clienthello->compressions;
5109 return s->clienthello->compressions_len;
5110}
5111
5112int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5113{
5114 RAW_EXTENSION *ext;
5115 int *present;
5116 size_t num = 0, i;
5117
5118 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5119 return 0;
5120 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5121 ext = s->clienthello->pre_proc_exts + i;
5122 if (ext->present)
5123 num++;
5124 }
5125 if (num == 0) {
5126 *out = NULL;
5127 *outlen = 0;
5128 return 1;
5129 }
5130 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5131 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5132 ERR_R_MALLOC_FAILURE);
5133 return 0;
5134 }
5135 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5136 ext = s->clienthello->pre_proc_exts + i;
5137 if (ext->present) {
5138 if (ext->received_order >= num)
5139 goto err;
5140 present[ext->received_order] = ext->type;
5141 }
5142 }
5143 *out = present;
5144 *outlen = num;
5145 return 1;
5146 err:
5147 OPENSSL_free(present);
5148 return 0;
5149}
5150
5151int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5152 size_t *outlen)
5153{
5154 size_t i;
5155 RAW_EXTENSION *r;
5156
5157 if (s->clienthello == NULL)
5158 return 0;
5159 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5160 r = s->clienthello->pre_proc_exts + i;
5161 if (r->present && r->type == type) {
5162 if (out != NULL)
5163 *out = PACKET_data(&r->data);
5164 if (outlen != NULL)
5165 *outlen = PACKET_remaining(&r->data);
5166 return 1;
5167 }
5168 }
5169 return 0;
5170}
5171
5172int SSL_free_buffers(SSL *ssl)
5173{
5174 RECORD_LAYER *rl = &ssl->rlayer;
5175
5176 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5177 return 0;
5178
5179 RECORD_LAYER_release(rl);
5180 return 1;
5181}
5182
5183int SSL_alloc_buffers(SSL *ssl)
5184{
5185 return ssl3_setup_buffers(ssl);
5186}
5187
5188void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5189{
5190 ctx->keylog_callback = cb;
5191}
5192
5193SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5194{
5195 return ctx->keylog_callback;
5196}
5197
5198static int nss_keylog_int(const char *prefix,
5199 SSL *ssl,
5200 const uint8_t *parameter_1,
5201 size_t parameter_1_len,
5202 const uint8_t *parameter_2,
5203 size_t parameter_2_len)
5204{
5205 char *out = NULL;
5206 char *cursor = NULL;
5207 size_t out_len = 0;
5208 size_t i;
5209 size_t prefix_len;
5210
5211 if (ssl->ctx->keylog_callback == NULL)
5212 return 1;
5213
5214 /*
5215 * Our output buffer will contain the following strings, rendered with
5216 * space characters in between, terminated by a NULL character: first the
5217 * prefix, then the first parameter, then the second parameter. The
5218 * meaning of each parameter depends on the specific key material being
5219 * logged. Note that the first and second parameters are encoded in
5220 * hexadecimal, so we need a buffer that is twice their lengths.
5221 */
5222 prefix_len = strlen(prefix);
5223 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5224 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5225 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5226 ERR_R_MALLOC_FAILURE);
5227 return 0;
5228 }
5229
5230 strcpy(cursor, prefix);
5231 cursor += prefix_len;
5232 *cursor++ = ' ';
5233
5234 for (i = 0; i < parameter_1_len; i++) {
5235 sprintf(cursor, "%02x", parameter_1[i]);
5236 cursor += 2;
5237 }
5238 *cursor++ = ' ';
5239
5240 for (i = 0; i < parameter_2_len; i++) {
5241 sprintf(cursor, "%02x", parameter_2[i]);
5242 cursor += 2;
5243 }
5244 *cursor = '\0';
5245
5246 ssl->ctx->keylog_callback(ssl, (const char *)out);
5247 OPENSSL_clear_free(out, out_len);
5248 return 1;
5249
5250}
5251
5252int ssl_log_rsa_client_key_exchange(SSL *ssl,
5253 const uint8_t *encrypted_premaster,
5254 size_t encrypted_premaster_len,
5255 const uint8_t *premaster,
5256 size_t premaster_len)
5257{
5258 if (encrypted_premaster_len < 8) {
5259 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5260 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5261 return 0;
5262 }
5263
5264 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5265 return nss_keylog_int("RSA",
5266 ssl,
5267 encrypted_premaster,
5268 8,
5269 premaster,
5270 premaster_len);
5271}
5272
5273int ssl_log_secret(SSL *ssl,
5274 const char *label,
5275 const uint8_t *secret,
5276 size_t secret_len)
5277{
5278 return nss_keylog_int(label,
5279 ssl,
5280 ssl->s3->client_random,
5281 SSL3_RANDOM_SIZE,
5282 secret,
5283 secret_len);
5284}
5285
5286#define SSLV2_CIPHER_LEN 3
5287
5288int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5289{
5290 int n;
5291
5292 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5293
5294 if (PACKET_remaining(cipher_suites) == 0) {
5295 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5296 SSL_R_NO_CIPHERS_SPECIFIED);
5297 return 0;
5298 }
5299
5300 if (PACKET_remaining(cipher_suites) % n != 0) {
5301 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5302 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5303 return 0;
5304 }
5305
5306 OPENSSL_free(s->s3->tmp.ciphers_raw);
5307 s->s3->tmp.ciphers_raw = NULL;
5308 s->s3->tmp.ciphers_rawlen = 0;
5309
5310 if (sslv2format) {
5311 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5312 PACKET sslv2ciphers = *cipher_suites;
5313 unsigned int leadbyte;
5314 unsigned char *raw;
5315
5316 /*
5317 * We store the raw ciphers list in SSLv3+ format so we need to do some
5318 * preprocessing to convert the list first. If there are any SSLv2 only
5319 * ciphersuites with a non-zero leading byte then we are going to
5320 * slightly over allocate because we won't store those. But that isn't a
5321 * problem.
5322 */
5323 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5324 s->s3->tmp.ciphers_raw = raw;
5325 if (raw == NULL) {
5326 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5327 ERR_R_MALLOC_FAILURE);
5328 return 0;
5329 }
5330 for (s->s3->tmp.ciphers_rawlen = 0;
5331 PACKET_remaining(&sslv2ciphers) > 0;
5332 raw += TLS_CIPHER_LEN) {
5333 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5334 || (leadbyte == 0
5335 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5336 TLS_CIPHER_LEN))
5337 || (leadbyte != 0
5338 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5339 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5340 SSL_R_BAD_PACKET);
5341 OPENSSL_free(s->s3->tmp.ciphers_raw);
5342 s->s3->tmp.ciphers_raw = NULL;
5343 s->s3->tmp.ciphers_rawlen = 0;
5344 return 0;
5345 }
5346 if (leadbyte == 0)
5347 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5348 }
5349 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5350 &s->s3->tmp.ciphers_rawlen)) {
5351 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5352 ERR_R_INTERNAL_ERROR);
5353 return 0;
5354 }
5355 return 1;
5356}
5357
5358int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5359 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5360 STACK_OF(SSL_CIPHER) **scsvs)
5361{
5362 PACKET pkt;
5363
5364 if (!PACKET_buf_init(&pkt, bytes, len))
5365 return 0;
5366 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5367}
5368
5369int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5370 STACK_OF(SSL_CIPHER) **skp,
5371 STACK_OF(SSL_CIPHER) **scsvs_out,
5372 int sslv2format, int fatal)
5373{
5374 const SSL_CIPHER *c;
5375 STACK_OF(SSL_CIPHER) *sk = NULL;
5376 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5377 int n;
5378 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5379 unsigned char cipher[SSLV2_CIPHER_LEN];
5380
5381 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5382
5383 if (PACKET_remaining(cipher_suites) == 0) {
5384 if (fatal)
5385 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5386 SSL_R_NO_CIPHERS_SPECIFIED);
5387 else
5388 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5389 return 0;
5390 }
5391
5392 if (PACKET_remaining(cipher_suites) % n != 0) {
5393 if (fatal)
5394 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5395 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5396 else
5397 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5398 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5399 return 0;
5400 }
5401
5402 sk = sk_SSL_CIPHER_new_null();
5403 scsvs = sk_SSL_CIPHER_new_null();
5404 if (sk == NULL || scsvs == NULL) {
5405 if (fatal)
5406 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5407 ERR_R_MALLOC_FAILURE);
5408 else
5409 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5410 goto err;
5411 }
5412
5413 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5414 /*
5415 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5416 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5417 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5418 */
5419 if (sslv2format && cipher[0] != '\0')
5420 continue;
5421
5422 /* For SSLv2-compat, ignore leading 0-byte. */
5423 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5424 if (c != NULL) {
5425 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5426 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5427 if (fatal)
5428 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5429 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5430 else
5431 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5432 goto err;
5433 }
5434 }
5435 }
5436 if (PACKET_remaining(cipher_suites) > 0) {
5437 if (fatal)
5438 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5439 SSL_R_BAD_LENGTH);
5440 else
5441 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5442 goto err;
5443 }
5444
5445 if (skp != NULL)
5446 *skp = sk;
5447 else
5448 sk_SSL_CIPHER_free(sk);
5449 if (scsvs_out != NULL)
5450 *scsvs_out = scsvs;
5451 else
5452 sk_SSL_CIPHER_free(scsvs);
5453 return 1;
5454 err:
5455 sk_SSL_CIPHER_free(sk);
5456 sk_SSL_CIPHER_free(scsvs);
5457 return 0;
5458}
5459
5460int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5461{
5462 ctx->max_early_data = max_early_data;
5463
5464 return 1;
5465}
5466
5467uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5468{
5469 return ctx->max_early_data;
5470}
5471
5472int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5473{
5474 s->max_early_data = max_early_data;
5475
5476 return 1;
5477}
5478
5479uint32_t SSL_get_max_early_data(const SSL *s)
5480{
5481 return s->max_early_data;
5482}
5483
5484int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5485{
5486 ctx->recv_max_early_data = recv_max_early_data;
5487
5488 return 1;
5489}
5490
5491uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5492{
5493 return ctx->recv_max_early_data;
5494}
5495
5496int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5497{
5498 s->recv_max_early_data = recv_max_early_data;
5499
5500 return 1;
5501}
5502
5503uint32_t SSL_get_recv_max_early_data(const SSL *s)
5504{
5505 return s->recv_max_early_data;
5506}
5507
5508__owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5509{
5510 /* Return any active Max Fragment Len extension */
5511 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5512 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5513
5514 /* return current SSL connection setting */
5515 return ssl->max_send_fragment;
5516}
5517
5518__owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5519{
5520 /* Return a value regarding an active Max Fragment Len extension */
5521 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5522 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5523 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5524
5525 /* else limit |split_send_fragment| to current |max_send_fragment| */
5526 if (ssl->split_send_fragment > ssl->max_send_fragment)
5527 return ssl->max_send_fragment;
5528
5529 /* return current SSL connection setting */
5530 return ssl->split_send_fragment;
5531}
5532
5533int SSL_stateless(SSL *s)
5534{
5535 int ret;
5536
5537 /* Ensure there is no state left over from a previous invocation */
5538 if (!SSL_clear(s))
5539 return 0;
5540
5541 ERR_clear_error();
5542
5543 s->s3->flags |= TLS1_FLAGS_STATELESS;
5544 ret = SSL_accept(s);
5545 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5546
5547 if (ret > 0 && s->ext.cookieok)
5548 return 1;
5549
5550 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5551 return 0;
5552
5553 return -1;
5554}
5555
5556void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5557{
5558 ctx->pha_enabled = val;
5559}
5560
5561void SSL_set_post_handshake_auth(SSL *ssl, int val)
5562{
5563 ssl->pha_enabled = val;
5564}
5565
5566int SSL_verify_client_post_handshake(SSL *ssl)
5567{
5568 if (!SSL_IS_TLS13(ssl)) {
5569 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5570 return 0;
5571 }
5572 if (!ssl->server) {
5573 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5574 return 0;
5575 }
5576
5577 if (!SSL_is_init_finished(ssl)) {
5578 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5579 return 0;
5580 }
5581
5582 switch (ssl->post_handshake_auth) {
5583 case SSL_PHA_NONE:
5584 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5585 return 0;
5586 default:
5587 case SSL_PHA_EXT_SENT:
5588 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5589 return 0;
5590 case SSL_PHA_EXT_RECEIVED:
5591 break;
5592 case SSL_PHA_REQUEST_PENDING:
5593 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5594 return 0;
5595 case SSL_PHA_REQUESTED:
5596 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5597 return 0;
5598 }
5599
5600 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5601
5602 /* checks verify_mode and algorithm_auth */
5603 if (!send_certificate_request(ssl)) {
5604 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5605 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5606 return 0;
5607 }
5608
5609 ossl_statem_set_in_init(ssl, 1);
5610 return 1;
5611}
5612
5613int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5614 SSL_CTX_generate_session_ticket_fn gen_cb,
5615 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5616 void *arg)
5617{
5618 ctx->generate_ticket_cb = gen_cb;
5619 ctx->decrypt_ticket_cb = dec_cb;
5620 ctx->ticket_cb_data = arg;
5621 return 1;
5622}
5623
5624void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5625 SSL_allow_early_data_cb_fn cb,
5626 void *arg)
5627{
5628 ctx->allow_early_data_cb = cb;
5629 ctx->allow_early_data_cb_data = arg;
5630}
5631
5632void SSL_set_allow_early_data_cb(SSL *s,
5633 SSL_allow_early_data_cb_fn cb,
5634 void *arg)
5635{
5636 s->allow_early_data_cb = cb;
5637 s->allow_early_data_cb_data = arg;
5638}
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