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.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
12 /* We need to use some engine deprecated APIs */
13 #define OPENSSL_SUPPRESS_DEPRECATED
16 #include "ssl_local.h"
18 #include <openssl/objects.h>
19 #include <openssl/x509v3.h>
20 #include <openssl/rand.h>
21 #include <openssl/ocsp.h>
22 #include <openssl/dh.h>
23 #include <openssl/engine.h>
24 #include <openssl/async.h>
25 #include <openssl/ct.h>
26 #include <openssl/trace.h>
27 #include "internal/cryptlib.h"
28 #include "internal/refcount.h"
29 #include "internal/ktls.h"
32 DEFINE_STACK_OF(X509_NAME)
33 DEFINE_STACK_OF_CONST(SSL_CIPHER)
34 DEFINE_STACK_OF(X509_EXTENSION)
35 DEFINE_STACK_OF(OCSP_RESPID)
36 DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
39 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
40 SSL_MAC_BUF *mac, size_t macsize)
42 return ssl_undefined_function(ssl);
45 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
48 return ssl_undefined_function(ssl);
51 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
52 unsigned char *s, size_t t, size_t *u)
54 return ssl_undefined_function(ssl);
57 static int ssl_undefined_function_4(SSL *ssl, int r)
59 return ssl_undefined_function(ssl);
62 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
65 return ssl_undefined_function(ssl);
68 static int ssl_undefined_function_6(int r)
70 return ssl_undefined_function(NULL);
73 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
74 const char *t, size_t u,
75 const unsigned char *v, size_t w, int x)
77 return ssl_undefined_function(ssl);
80 SSL3_ENC_METHOD ssl3_undef_enc_method = {
81 ssl_undefined_function_1,
82 ssl_undefined_function_2,
83 ssl_undefined_function,
84 ssl_undefined_function_3,
85 ssl_undefined_function_4,
86 ssl_undefined_function_5,
87 NULL, /* client_finished_label */
88 0, /* client_finished_label_len */
89 NULL, /* server_finished_label */
90 0, /* server_finished_label_len */
91 ssl_undefined_function_6,
92 ssl_undefined_function_7,
95 struct ssl_async_args {
99 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
101 int (*func_read) (SSL *, void *, size_t, size_t *);
102 int (*func_write) (SSL *, const void *, size_t, size_t *);
103 int (*func_other) (SSL *);
107 static const struct {
113 DANETLS_MATCHING_FULL, 0, NID_undef
116 DANETLS_MATCHING_2256, 1, NID_sha256
119 DANETLS_MATCHING_2512, 2, NID_sha512
123 static int dane_ctx_enable(struct dane_ctx_st *dctx)
125 const EVP_MD **mdevp;
127 uint8_t mdmax = DANETLS_MATCHING_LAST;
128 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
131 if (dctx->mdevp != NULL)
134 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
135 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
137 if (mdord == NULL || mdevp == NULL) {
140 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
144 /* Install default entries */
145 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
148 if (dane_mds[i].nid == NID_undef ||
149 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
151 mdevp[dane_mds[i].mtype] = md;
152 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
162 static void dane_ctx_final(struct dane_ctx_st *dctx)
164 OPENSSL_free(dctx->mdevp);
167 OPENSSL_free(dctx->mdord);
172 static void tlsa_free(danetls_record *t)
176 OPENSSL_free(t->data);
177 EVP_PKEY_free(t->spki);
181 static void dane_final(SSL_DANE *dane)
183 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
186 sk_X509_pop_free(dane->certs, X509_free);
189 X509_free(dane->mcert);
197 * dane_copy - Copy dane configuration, sans verification state.
199 static int ssl_dane_dup(SSL *to, SSL *from)
204 if (!DANETLS_ENABLED(&from->dane))
207 num = sk_danetls_record_num(from->dane.trecs);
208 dane_final(&to->dane);
209 to->dane.flags = from->dane.flags;
210 to->dane.dctx = &to->ctx->dane;
211 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
213 if (to->dane.trecs == NULL) {
214 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
218 for (i = 0; i < num; ++i) {
219 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
221 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
222 t->data, t->dlen) <= 0)
228 static int dane_mtype_set(struct dane_ctx_st *dctx,
229 const EVP_MD *md, uint8_t mtype, uint8_t ord)
233 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
234 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
238 if (mtype > dctx->mdmax) {
239 const EVP_MD **mdevp;
241 int n = ((int)mtype) + 1;
243 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
245 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
250 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
252 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
257 /* Zero-fill any gaps */
258 for (i = dctx->mdmax + 1; i < mtype; ++i) {
266 dctx->mdevp[mtype] = md;
267 /* Coerce ordinal of disabled matching types to 0 */
268 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
273 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
275 if (mtype > dane->dctx->mdmax)
277 return dane->dctx->mdevp[mtype];
280 static int dane_tlsa_add(SSL_DANE *dane,
283 uint8_t mtype, unsigned const char *data, size_t dlen)
286 const EVP_MD *md = NULL;
287 int ilen = (int)dlen;
291 if (dane->trecs == NULL) {
292 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
296 if (ilen < 0 || dlen != (size_t)ilen) {
297 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
301 if (usage > DANETLS_USAGE_LAST) {
302 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
306 if (selector > DANETLS_SELECTOR_LAST) {
307 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
311 if (mtype != DANETLS_MATCHING_FULL) {
312 md = tlsa_md_get(dane, mtype);
314 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
319 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
320 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
324 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
328 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
329 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
334 t->selector = selector;
336 t->data = OPENSSL_malloc(dlen);
337 if (t->data == NULL) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
342 memcpy(t->data, data, dlen);
345 /* Validate and cache full certificate or public key */
346 if (mtype == DANETLS_MATCHING_FULL) {
347 const unsigned char *p = data;
349 EVP_PKEY *pkey = NULL;
352 case DANETLS_SELECTOR_CERT:
353 if (!d2i_X509(&cert, &p, ilen) || p < data ||
354 dlen != (size_t)(p - data)) {
356 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
359 if (X509_get0_pubkey(cert) == NULL) {
361 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
365 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
371 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
372 * records that contain full certificates of trust-anchors that are
373 * not present in the wire chain. For usage PKIX-TA(0), we augment
374 * the chain with untrusted Full(0) certificates from DNS, in case
375 * they are missing from the chain.
377 if ((dane->certs == NULL &&
378 (dane->certs = sk_X509_new_null()) == NULL) ||
379 !sk_X509_push(dane->certs, cert)) {
380 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
387 case DANETLS_SELECTOR_SPKI:
388 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
389 dlen != (size_t)(p - data)) {
391 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
396 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
397 * records that contain full bare keys of trust-anchors that are
398 * not present in the wire chain.
400 if (usage == DANETLS_USAGE_DANE_TA)
409 * Find the right insertion point for the new record.
411 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
412 * they can be processed first, as they require no chain building, and no
413 * expiration or hostname checks. Because DANE-EE(3) is numerically
414 * largest, this is accomplished via descending sort by "usage".
416 * We also sort in descending order by matching ordinal to simplify
417 * the implementation of digest agility in the verification code.
419 * The choice of order for the selector is not significant, so we
420 * use the same descending order for consistency.
422 num = sk_danetls_record_num(dane->trecs);
423 for (i = 0; i < num; ++i) {
424 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
426 if (rec->usage > usage)
428 if (rec->usage < usage)
430 if (rec->selector > selector)
432 if (rec->selector < selector)
434 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
439 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
441 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
444 dane->umask |= DANETLS_USAGE_BIT(usage);
450 * Return 0 if there is only one version configured and it was disabled
451 * at configure time. Return 1 otherwise.
453 static int ssl_check_allowed_versions(int min_version, int max_version)
455 int minisdtls = 0, maxisdtls = 0;
457 /* Figure out if we're doing DTLS versions or TLS versions */
458 if (min_version == DTLS1_BAD_VER
459 || min_version >> 8 == DTLS1_VERSION_MAJOR)
461 if (max_version == DTLS1_BAD_VER
462 || max_version >> 8 == DTLS1_VERSION_MAJOR)
464 /* A wildcard version of 0 could be DTLS or TLS. */
465 if ((minisdtls && !maxisdtls && max_version != 0)
466 || (maxisdtls && !minisdtls && min_version != 0)) {
467 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
471 if (minisdtls || maxisdtls) {
472 /* Do DTLS version checks. */
473 if (min_version == 0)
474 /* Ignore DTLS1_BAD_VER */
475 min_version = DTLS1_VERSION;
476 if (max_version == 0)
477 max_version = DTLS1_2_VERSION;
478 #ifdef OPENSSL_NO_DTLS1_2
479 if (max_version == DTLS1_2_VERSION)
480 max_version = DTLS1_VERSION;
482 #ifdef OPENSSL_NO_DTLS1
483 if (min_version == DTLS1_VERSION)
484 min_version = DTLS1_2_VERSION;
486 /* Done massaging versions; do the check. */
488 #ifdef OPENSSL_NO_DTLS1
489 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
490 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
492 #ifdef OPENSSL_NO_DTLS1_2
493 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
494 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
499 /* Regular TLS version checks. */
500 if (min_version == 0)
501 min_version = SSL3_VERSION;
502 if (max_version == 0)
503 max_version = TLS1_3_VERSION;
504 #ifdef OPENSSL_NO_TLS1_3
505 if (max_version == TLS1_3_VERSION)
506 max_version = TLS1_2_VERSION;
508 #ifdef OPENSSL_NO_TLS1_2
509 if (max_version == TLS1_2_VERSION)
510 max_version = TLS1_1_VERSION;
512 #ifdef OPENSSL_NO_TLS1_1
513 if (max_version == TLS1_1_VERSION)
514 max_version = TLS1_VERSION;
516 #ifdef OPENSSL_NO_TLS1
517 if (max_version == TLS1_VERSION)
518 max_version = SSL3_VERSION;
520 #ifdef OPENSSL_NO_SSL3
521 if (min_version == SSL3_VERSION)
522 min_version = TLS1_VERSION;
524 #ifdef OPENSSL_NO_TLS1
525 if (min_version == TLS1_VERSION)
526 min_version = TLS1_1_VERSION;
528 #ifdef OPENSSL_NO_TLS1_1
529 if (min_version == TLS1_1_VERSION)
530 min_version = TLS1_2_VERSION;
532 #ifdef OPENSSL_NO_TLS1_2
533 if (min_version == TLS1_2_VERSION)
534 min_version = TLS1_3_VERSION;
536 /* Done massaging versions; do the check. */
538 #ifdef OPENSSL_NO_SSL3
539 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
541 #ifdef OPENSSL_NO_TLS1
542 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
544 #ifdef OPENSSL_NO_TLS1_1
545 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
547 #ifdef OPENSSL_NO_TLS1_2
548 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
550 #ifdef OPENSSL_NO_TLS1_3
551 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
559 static void clear_ciphers(SSL *s)
561 /* clear the current cipher */
562 ssl_clear_cipher_ctx(s);
563 ssl_clear_hash_ctx(&s->read_hash);
564 ssl_clear_hash_ctx(&s->write_hash);
567 int SSL_clear(SSL *s)
569 if (s->method == NULL) {
570 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
574 if (ssl_clear_bad_session(s)) {
575 SSL_SESSION_free(s->session);
578 SSL_SESSION_free(s->psksession);
579 s->psksession = NULL;
580 OPENSSL_free(s->psksession_id);
581 s->psksession_id = NULL;
582 s->psksession_id_len = 0;
583 s->hello_retry_request = 0;
590 if (s->renegotiate) {
591 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
595 ossl_statem_clear(s);
597 s->version = s->method->version;
598 s->client_version = s->version;
599 s->rwstate = SSL_NOTHING;
601 BUF_MEM_free(s->init_buf);
606 s->key_update = SSL_KEY_UPDATE_NONE;
608 EVP_MD_CTX_free(s->pha_dgst);
611 /* Reset DANE verification result state */
614 X509_free(s->dane.mcert);
615 s->dane.mcert = NULL;
616 s->dane.mtlsa = NULL;
618 /* Clear the verification result peername */
619 X509_VERIFY_PARAM_move_peername(s->param, NULL);
621 /* Clear any shared connection state */
622 OPENSSL_free(s->shared_sigalgs);
623 s->shared_sigalgs = NULL;
624 s->shared_sigalgslen = 0;
627 * Check to see if we were changed into a different method, if so, revert
630 if (s->method != s->ctx->method) {
631 s->method->ssl_free(s);
632 s->method = s->ctx->method;
633 if (!s->method->ssl_new(s))
636 if (!s->method->ssl_clear(s))
640 RECORD_LAYER_clear(&s->rlayer);
645 #ifndef OPENSSL_NO_DEPRECATED_3_0
646 /** Used to change an SSL_CTXs default SSL method type */
647 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
649 STACK_OF(SSL_CIPHER) *sk;
653 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
654 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
657 sk = ssl_create_cipher_list(ctx->method,
658 ctx->tls13_ciphersuites,
660 &(ctx->cipher_list_by_id),
661 OSSL_default_cipher_list(), ctx->cert);
662 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
663 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
670 SSL *SSL_new(SSL_CTX *ctx)
675 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
678 if (ctx->method == NULL) {
679 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
683 s = OPENSSL_zalloc(sizeof(*s));
688 s->lock = CRYPTO_THREAD_lock_new();
689 if (s->lock == NULL) {
695 RECORD_LAYER_init(&s->rlayer, s);
697 s->options = ctx->options;
698 s->dane.flags = ctx->dane.flags;
699 s->min_proto_version = ctx->min_proto_version;
700 s->max_proto_version = ctx->max_proto_version;
702 s->max_cert_list = ctx->max_cert_list;
703 s->max_early_data = ctx->max_early_data;
704 s->recv_max_early_data = ctx->recv_max_early_data;
705 s->num_tickets = ctx->num_tickets;
706 s->pha_enabled = ctx->pha_enabled;
708 /* Shallow copy of the ciphersuites stack */
709 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
710 if (s->tls13_ciphersuites == NULL)
714 * Earlier library versions used to copy the pointer to the CERT, not
715 * its contents; only when setting new parameters for the per-SSL
716 * copy, ssl_cert_new would be called (and the direct reference to
717 * the per-SSL_CTX settings would be lost, but those still were
718 * indirectly accessed for various purposes, and for that reason they
719 * used to be known as s->ctx->default_cert). Now we don't look at the
720 * SSL_CTX's CERT after having duplicated it once.
722 s->cert = ssl_cert_dup(ctx->cert);
726 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
727 s->msg_callback = ctx->msg_callback;
728 s->msg_callback_arg = ctx->msg_callback_arg;
729 s->verify_mode = ctx->verify_mode;
730 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
731 s->record_padding_cb = ctx->record_padding_cb;
732 s->record_padding_arg = ctx->record_padding_arg;
733 s->block_padding = ctx->block_padding;
734 s->sid_ctx_length = ctx->sid_ctx_length;
735 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
737 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
738 s->verify_callback = ctx->default_verify_callback;
739 s->generate_session_id = ctx->generate_session_id;
741 s->param = X509_VERIFY_PARAM_new();
742 if (s->param == NULL)
744 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
745 s->quiet_shutdown = ctx->quiet_shutdown;
747 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
748 s->max_send_fragment = ctx->max_send_fragment;
749 s->split_send_fragment = ctx->split_send_fragment;
750 s->max_pipelines = ctx->max_pipelines;
751 if (s->max_pipelines > 1)
752 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
753 if (ctx->default_read_buf_len > 0)
754 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
759 s->ext.debug_arg = NULL;
760 s->ext.ticket_expected = 0;
761 s->ext.status_type = ctx->ext.status_type;
762 s->ext.status_expected = 0;
763 s->ext.ocsp.ids = NULL;
764 s->ext.ocsp.exts = NULL;
765 s->ext.ocsp.resp = NULL;
766 s->ext.ocsp.resp_len = 0;
768 s->session_ctx = ctx;
769 #ifndef OPENSSL_NO_EC
770 if (ctx->ext.ecpointformats) {
771 s->ext.ecpointformats =
772 OPENSSL_memdup(ctx->ext.ecpointformats,
773 ctx->ext.ecpointformats_len);
774 if (!s->ext.ecpointformats)
776 s->ext.ecpointformats_len =
777 ctx->ext.ecpointformats_len;
780 if (ctx->ext.supportedgroups) {
781 s->ext.supportedgroups =
782 OPENSSL_memdup(ctx->ext.supportedgroups,
783 ctx->ext.supportedgroups_len
784 * sizeof(*ctx->ext.supportedgroups));
785 if (!s->ext.supportedgroups)
787 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
790 #ifndef OPENSSL_NO_NEXTPROTONEG
794 if (s->ctx->ext.alpn) {
795 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
796 if (s->ext.alpn == NULL)
798 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
799 s->ext.alpn_len = s->ctx->ext.alpn_len;
802 s->verified_chain = NULL;
803 s->verify_result = X509_V_OK;
805 s->default_passwd_callback = ctx->default_passwd_callback;
806 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
808 s->method = ctx->method;
810 s->key_update = SSL_KEY_UPDATE_NONE;
812 s->allow_early_data_cb = ctx->allow_early_data_cb;
813 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
815 if (!s->method->ssl_new(s))
818 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
823 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
826 #ifndef OPENSSL_NO_PSK
827 s->psk_client_callback = ctx->psk_client_callback;
828 s->psk_server_callback = ctx->psk_server_callback;
830 s->psk_find_session_cb = ctx->psk_find_session_cb;
831 s->psk_use_session_cb = ctx->psk_use_session_cb;
833 s->async_cb = ctx->async_cb;
834 s->async_cb_arg = ctx->async_cb_arg;
838 #ifndef OPENSSL_NO_CT
839 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
840 ctx->ct_validation_callback_arg))
847 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
851 int SSL_is_dtls(const SSL *s)
853 return SSL_IS_DTLS(s) ? 1 : 0;
856 int SSL_up_ref(SSL *s)
860 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
863 REF_PRINT_COUNT("SSL", s);
864 REF_ASSERT_ISNT(i < 2);
865 return ((i > 1) ? 1 : 0);
868 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
869 unsigned int sid_ctx_len)
871 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
872 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
873 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
876 ctx->sid_ctx_length = sid_ctx_len;
877 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
882 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
883 unsigned int sid_ctx_len)
885 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
886 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
887 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
890 ssl->sid_ctx_length = sid_ctx_len;
891 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
896 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
898 CRYPTO_THREAD_write_lock(ctx->lock);
899 ctx->generate_session_id = cb;
900 CRYPTO_THREAD_unlock(ctx->lock);
904 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
906 CRYPTO_THREAD_write_lock(ssl->lock);
907 ssl->generate_session_id = cb;
908 CRYPTO_THREAD_unlock(ssl->lock);
912 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
916 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
917 * we can "construct" a session to give us the desired check - i.e. to
918 * find if there's a session in the hash table that would conflict with
919 * any new session built out of this id/id_len and the ssl_version in use
924 if (id_len > sizeof(r.session_id))
927 r.ssl_version = ssl->version;
928 r.session_id_length = id_len;
929 memcpy(r.session_id, id, id_len);
931 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
932 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
933 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
937 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
939 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
942 int SSL_set_purpose(SSL *s, int purpose)
944 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
947 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
949 return X509_VERIFY_PARAM_set_trust(s->param, trust);
952 int SSL_set_trust(SSL *s, int trust)
954 return X509_VERIFY_PARAM_set_trust(s->param, trust);
957 int SSL_set1_host(SSL *s, const char *hostname)
959 /* If a hostname is provided and parses as an IP address,
960 * treat it as such. */
961 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
964 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
967 int SSL_add1_host(SSL *s, const char *hostname)
969 /* If a hostname is provided and parses as an IP address,
970 * treat it as such. */
973 ASN1_OCTET_STRING *ip;
976 ip = a2i_IPADDRESS(hostname);
978 /* We didn't want it; only to check if it *is* an IP address */
979 ASN1_OCTET_STRING_free(ip);
981 old_ip = X509_VERIFY_PARAM_get1_ip_asc(s->param);
984 OPENSSL_free(old_ip);
985 /* There can be only one IP address */
989 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
993 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
996 void SSL_set_hostflags(SSL *s, unsigned int flags)
998 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
1001 const char *SSL_get0_peername(SSL *s)
1003 return X509_VERIFY_PARAM_get0_peername(s->param);
1006 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1008 return dane_ctx_enable(&ctx->dane);
1011 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1013 unsigned long orig = ctx->dane.flags;
1015 ctx->dane.flags |= flags;
1019 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1021 unsigned long orig = ctx->dane.flags;
1023 ctx->dane.flags &= ~flags;
1027 int SSL_dane_enable(SSL *s, const char *basedomain)
1029 SSL_DANE *dane = &s->dane;
1031 if (s->ctx->dane.mdmax == 0) {
1032 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1035 if (dane->trecs != NULL) {
1036 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1041 * Default SNI name. This rejects empty names, while set1_host below
1042 * accepts them and disables host name checks. To avoid side-effects with
1043 * invalid input, set the SNI name first.
1045 if (s->ext.hostname == NULL) {
1046 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1047 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1052 /* Primary RFC6125 reference identifier */
1053 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1054 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1060 dane->dctx = &s->ctx->dane;
1061 dane->trecs = sk_danetls_record_new_null();
1063 if (dane->trecs == NULL) {
1064 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1070 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1072 unsigned long orig = ssl->dane.flags;
1074 ssl->dane.flags |= flags;
1078 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1080 unsigned long orig = ssl->dane.flags;
1082 ssl->dane.flags &= ~flags;
1086 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1088 SSL_DANE *dane = &s->dane;
1090 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1094 *mcert = dane->mcert;
1096 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1101 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1102 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1104 SSL_DANE *dane = &s->dane;
1106 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1110 *usage = dane->mtlsa->usage;
1112 *selector = dane->mtlsa->selector;
1114 *mtype = dane->mtlsa->mtype;
1116 *data = dane->mtlsa->data;
1118 *dlen = dane->mtlsa->dlen;
1123 SSL_DANE *SSL_get0_dane(SSL *s)
1128 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1129 uint8_t mtype, unsigned const char *data, size_t dlen)
1131 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1134 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1137 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1140 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1142 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1145 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1147 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1150 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1155 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1160 void SSL_certs_clear(SSL *s)
1162 ssl_cert_clear_certs(s->cert);
1165 void SSL_free(SSL *s)
1171 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1172 REF_PRINT_COUNT("SSL", s);
1175 REF_ASSERT_ISNT(i < 0);
1177 X509_VERIFY_PARAM_free(s->param);
1178 dane_final(&s->dane);
1179 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1181 RECORD_LAYER_release(&s->rlayer);
1183 /* Ignore return value */
1184 ssl_free_wbio_buffer(s);
1186 BIO_free_all(s->wbio);
1188 BIO_free_all(s->rbio);
1191 BUF_MEM_free(s->init_buf);
1193 /* add extra stuff */
1194 sk_SSL_CIPHER_free(s->cipher_list);
1195 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1196 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1197 sk_SSL_CIPHER_free(s->peer_ciphers);
1199 /* Make the next call work :-) */
1200 if (s->session != NULL) {
1201 ssl_clear_bad_session(s);
1202 SSL_SESSION_free(s->session);
1204 SSL_SESSION_free(s->psksession);
1205 OPENSSL_free(s->psksession_id);
1209 ssl_cert_free(s->cert);
1210 OPENSSL_free(s->shared_sigalgs);
1211 /* Free up if allocated */
1213 OPENSSL_free(s->ext.hostname);
1214 SSL_CTX_free(s->session_ctx);
1215 #ifndef OPENSSL_NO_EC
1216 OPENSSL_free(s->ext.ecpointformats);
1217 OPENSSL_free(s->ext.peer_ecpointformats);
1218 #endif /* OPENSSL_NO_EC */
1219 OPENSSL_free(s->ext.supportedgroups);
1220 OPENSSL_free(s->ext.peer_supportedgroups);
1221 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1222 #ifndef OPENSSL_NO_OCSP
1223 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1225 #ifndef OPENSSL_NO_CT
1226 SCT_LIST_free(s->scts);
1227 OPENSSL_free(s->ext.scts);
1229 OPENSSL_free(s->ext.ocsp.resp);
1230 OPENSSL_free(s->ext.alpn);
1231 OPENSSL_free(s->ext.tls13_cookie);
1232 if (s->clienthello != NULL)
1233 OPENSSL_free(s->clienthello->pre_proc_exts);
1234 OPENSSL_free(s->clienthello);
1235 OPENSSL_free(s->pha_context);
1236 EVP_MD_CTX_free(s->pha_dgst);
1238 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1239 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1241 sk_X509_pop_free(s->verified_chain, X509_free);
1243 if (s->method != NULL)
1244 s->method->ssl_free(s);
1246 SSL_CTX_free(s->ctx);
1248 ASYNC_WAIT_CTX_free(s->waitctx);
1250 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1251 OPENSSL_free(s->ext.npn);
1254 #ifndef OPENSSL_NO_SRTP
1255 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1258 CRYPTO_THREAD_lock_free(s->lock);
1263 void SSL_set0_rbio(SSL *s, BIO *rbio)
1265 BIO_free_all(s->rbio);
1269 void SSL_set0_wbio(SSL *s, BIO *wbio)
1272 * If the output buffering BIO is still in place, remove it
1274 if (s->bbio != NULL)
1275 s->wbio = BIO_pop(s->wbio);
1277 BIO_free_all(s->wbio);
1280 /* Re-attach |bbio| to the new |wbio|. */
1281 if (s->bbio != NULL)
1282 s->wbio = BIO_push(s->bbio, s->wbio);
1285 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1288 * For historical reasons, this function has many different cases in
1289 * ownership handling.
1292 /* If nothing has changed, do nothing */
1293 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1297 * If the two arguments are equal then one fewer reference is granted by the
1298 * caller than we want to take
1300 if (rbio != NULL && rbio == wbio)
1304 * If only the wbio is changed only adopt one reference.
1306 if (rbio == SSL_get_rbio(s)) {
1307 SSL_set0_wbio(s, wbio);
1311 * There is an asymmetry here for historical reasons. If only the rbio is
1312 * changed AND the rbio and wbio were originally different, then we only
1313 * adopt one reference.
1315 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1316 SSL_set0_rbio(s, rbio);
1320 /* Otherwise, adopt both references. */
1321 SSL_set0_rbio(s, rbio);
1322 SSL_set0_wbio(s, wbio);
1325 BIO *SSL_get_rbio(const SSL *s)
1330 BIO *SSL_get_wbio(const SSL *s)
1332 if (s->bbio != NULL) {
1334 * If |bbio| is active, the true caller-configured BIO is its
1337 return BIO_next(s->bbio);
1342 int SSL_get_fd(const SSL *s)
1344 return SSL_get_rfd(s);
1347 int SSL_get_rfd(const SSL *s)
1352 b = SSL_get_rbio(s);
1353 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1355 BIO_get_fd(r, &ret);
1359 int SSL_get_wfd(const SSL *s)
1364 b = SSL_get_wbio(s);
1365 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1367 BIO_get_fd(r, &ret);
1371 #ifndef OPENSSL_NO_SOCK
1372 int SSL_set_fd(SSL *s, int fd)
1377 bio = BIO_new(BIO_s_socket());
1380 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1383 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1384 SSL_set_bio(s, bio, bio);
1385 #ifndef OPENSSL_NO_KTLS
1387 * The new socket is created successfully regardless of ktls_enable.
1388 * ktls_enable doesn't change any functionality of the socket, except
1389 * changing the setsockopt to enable the processing of ktls_start.
1390 * Thus, it is not a problem to call it for non-TLS sockets.
1393 #endif /* OPENSSL_NO_KTLS */
1399 int SSL_set_wfd(SSL *s, int fd)
1401 BIO *rbio = SSL_get_rbio(s);
1403 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1404 || (int)BIO_get_fd(rbio, NULL) != fd) {
1405 BIO *bio = BIO_new(BIO_s_socket());
1408 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1411 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1412 SSL_set0_wbio(s, bio);
1413 #ifndef OPENSSL_NO_KTLS
1415 * The new socket is created successfully regardless of ktls_enable.
1416 * ktls_enable doesn't change any functionality of the socket, except
1417 * changing the setsockopt to enable the processing of ktls_start.
1418 * Thus, it is not a problem to call it for non-TLS sockets.
1421 #endif /* OPENSSL_NO_KTLS */
1424 SSL_set0_wbio(s, rbio);
1429 int SSL_set_rfd(SSL *s, int fd)
1431 BIO *wbio = SSL_get_wbio(s);
1433 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1434 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1435 BIO *bio = BIO_new(BIO_s_socket());
1438 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1441 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1442 SSL_set0_rbio(s, bio);
1445 SSL_set0_rbio(s, wbio);
1452 /* return length of latest Finished message we sent, copy to 'buf' */
1453 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1457 ret = s->s3.tmp.finish_md_len;
1460 memcpy(buf, s->s3.tmp.finish_md, count);
1464 /* return length of latest Finished message we expected, copy to 'buf' */
1465 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1469 ret = s->s3.tmp.peer_finish_md_len;
1472 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1476 int SSL_get_verify_mode(const SSL *s)
1478 return s->verify_mode;
1481 int SSL_get_verify_depth(const SSL *s)
1483 return X509_VERIFY_PARAM_get_depth(s->param);
1486 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1487 return s->verify_callback;
1490 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1492 return ctx->verify_mode;
1495 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1497 return X509_VERIFY_PARAM_get_depth(ctx->param);
1500 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1501 return ctx->default_verify_callback;
1504 void SSL_set_verify(SSL *s, int mode,
1505 int (*callback) (int ok, X509_STORE_CTX *ctx))
1507 s->verify_mode = mode;
1508 if (callback != NULL)
1509 s->verify_callback = callback;
1512 void SSL_set_verify_depth(SSL *s, int depth)
1514 X509_VERIFY_PARAM_set_depth(s->param, depth);
1517 void SSL_set_read_ahead(SSL *s, int yes)
1519 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1522 int SSL_get_read_ahead(const SSL *s)
1524 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1527 int SSL_pending(const SSL *s)
1529 size_t pending = s->method->ssl_pending(s);
1532 * SSL_pending cannot work properly if read-ahead is enabled
1533 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1534 * impossible to fix since SSL_pending cannot report errors that may be
1535 * observed while scanning the new data. (Note that SSL_pending() is
1536 * often used as a boolean value, so we'd better not return -1.)
1538 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1539 * we just return INT_MAX.
1541 return pending < INT_MAX ? (int)pending : INT_MAX;
1544 int SSL_has_pending(const SSL *s)
1547 * Similar to SSL_pending() but returns a 1 to indicate that we have
1548 * unprocessed data available or 0 otherwise (as opposed to the number of
1549 * bytes available). Unlike SSL_pending() this will take into account
1550 * read_ahead data. A 1 return simply indicates that we have unprocessed
1551 * data. That data may not result in any application data, or we may fail
1552 * to parse the records for some reason.
1554 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1557 return RECORD_LAYER_read_pending(&s->rlayer);
1560 X509 *SSL_get1_peer_certificate(const SSL *s)
1562 X509 *r = SSL_get0_peer_certificate(s);
1570 X509 *SSL_get0_peer_certificate(const SSL *s)
1572 if ((s == NULL) || (s->session == NULL))
1575 return s->session->peer;
1578 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1582 if ((s == NULL) || (s->session == NULL))
1585 r = s->session->peer_chain;
1588 * If we are a client, cert_chain includes the peer's own certificate; if
1589 * we are a server, it does not.
1596 * Now in theory, since the calling process own 't' it should be safe to
1597 * modify. We need to be able to read f without being hassled
1599 int SSL_copy_session_id(SSL *t, const SSL *f)
1602 /* Do we need to to SSL locking? */
1603 if (!SSL_set_session(t, SSL_get_session(f))) {
1608 * what if we are setup for one protocol version but want to talk another
1610 if (t->method != f->method) {
1611 t->method->ssl_free(t);
1612 t->method = f->method;
1613 if (t->method->ssl_new(t) == 0)
1617 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1618 ssl_cert_free(t->cert);
1620 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1627 /* Fix this so it checks all the valid key/cert options */
1628 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1630 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1631 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1634 if (ctx->cert->key->privatekey == NULL) {
1635 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1638 return X509_check_private_key
1639 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1642 /* Fix this function so that it takes an optional type parameter */
1643 int SSL_check_private_key(const SSL *ssl)
1646 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1649 if (ssl->cert->key->x509 == NULL) {
1650 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1653 if (ssl->cert->key->privatekey == NULL) {
1654 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1657 return X509_check_private_key(ssl->cert->key->x509,
1658 ssl->cert->key->privatekey);
1661 int SSL_waiting_for_async(SSL *s)
1669 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1671 ASYNC_WAIT_CTX *ctx = s->waitctx;
1675 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1678 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1679 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1681 ASYNC_WAIT_CTX *ctx = s->waitctx;
1685 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1689 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1691 ctx->async_cb = callback;
1695 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1697 ctx->async_cb_arg = arg;
1701 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1703 s->async_cb = callback;
1707 int SSL_set_async_callback_arg(SSL *s, void *arg)
1709 s->async_cb_arg = arg;
1713 int SSL_get_async_status(SSL *s, int *status)
1715 ASYNC_WAIT_CTX *ctx = s->waitctx;
1719 *status = ASYNC_WAIT_CTX_get_status(ctx);
1723 int SSL_accept(SSL *s)
1725 if (s->handshake_func == NULL) {
1726 /* Not properly initialized yet */
1727 SSL_set_accept_state(s);
1730 return SSL_do_handshake(s);
1733 int SSL_connect(SSL *s)
1735 if (s->handshake_func == NULL) {
1736 /* Not properly initialized yet */
1737 SSL_set_connect_state(s);
1740 return SSL_do_handshake(s);
1743 long SSL_get_default_timeout(const SSL *s)
1745 return s->method->get_timeout();
1748 static int ssl_async_wait_ctx_cb(void *arg)
1750 SSL *s = (SSL *)arg;
1752 return s->async_cb(s, s->async_cb_arg);
1755 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1756 int (*func) (void *))
1759 if (s->waitctx == NULL) {
1760 s->waitctx = ASYNC_WAIT_CTX_new();
1761 if (s->waitctx == NULL)
1763 if (s->async_cb != NULL
1764 && !ASYNC_WAIT_CTX_set_callback
1765 (s->waitctx, ssl_async_wait_ctx_cb, s))
1768 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1769 sizeof(struct ssl_async_args))) {
1771 s->rwstate = SSL_NOTHING;
1772 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1775 s->rwstate = SSL_ASYNC_PAUSED;
1778 s->rwstate = SSL_ASYNC_NO_JOBS;
1784 s->rwstate = SSL_NOTHING;
1785 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1786 /* Shouldn't happen */
1791 static int ssl_io_intern(void *vargs)
1793 struct ssl_async_args *args;
1798 args = (struct ssl_async_args *)vargs;
1802 switch (args->type) {
1804 return args->f.func_read(s, buf, num, &s->asyncrw);
1806 return args->f.func_write(s, buf, num, &s->asyncrw);
1808 return args->f.func_other(s);
1813 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1815 if (s->handshake_func == NULL) {
1816 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1820 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1821 s->rwstate = SSL_NOTHING;
1825 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1826 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1827 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1831 * If we are a client and haven't received the ServerHello etc then we
1834 ossl_statem_check_finish_init(s, 0);
1836 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1837 struct ssl_async_args args;
1843 args.type = READFUNC;
1844 args.f.func_read = s->method->ssl_read;
1846 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1847 *readbytes = s->asyncrw;
1850 return s->method->ssl_read(s, buf, num, readbytes);
1854 int SSL_read(SSL *s, void *buf, int num)
1860 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1864 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1867 * The cast is safe here because ret should be <= INT_MAX because num is
1871 ret = (int)readbytes;
1876 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1878 int ret = ssl_read_internal(s, buf, num, readbytes);
1885 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1890 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1891 return SSL_READ_EARLY_DATA_ERROR;
1894 switch (s->early_data_state) {
1895 case SSL_EARLY_DATA_NONE:
1896 if (!SSL_in_before(s)) {
1897 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1898 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1899 return SSL_READ_EARLY_DATA_ERROR;
1903 case SSL_EARLY_DATA_ACCEPT_RETRY:
1904 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1905 ret = SSL_accept(s);
1908 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1909 return SSL_READ_EARLY_DATA_ERROR;
1913 case SSL_EARLY_DATA_READ_RETRY:
1914 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1915 s->early_data_state = SSL_EARLY_DATA_READING;
1916 ret = SSL_read_ex(s, buf, num, readbytes);
1918 * State machine will update early_data_state to
1919 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1922 if (ret > 0 || (ret <= 0 && s->early_data_state
1923 != SSL_EARLY_DATA_FINISHED_READING)) {
1924 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1925 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1926 : SSL_READ_EARLY_DATA_ERROR;
1929 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1932 return SSL_READ_EARLY_DATA_FINISH;
1935 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1936 return SSL_READ_EARLY_DATA_ERROR;
1940 int SSL_get_early_data_status(const SSL *s)
1942 return s->ext.early_data;
1945 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1947 if (s->handshake_func == NULL) {
1948 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1952 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1955 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1956 struct ssl_async_args args;
1962 args.type = READFUNC;
1963 args.f.func_read = s->method->ssl_peek;
1965 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1966 *readbytes = s->asyncrw;
1969 return s->method->ssl_peek(s, buf, num, readbytes);
1973 int SSL_peek(SSL *s, void *buf, int num)
1979 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1983 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1986 * The cast is safe here because ret should be <= INT_MAX because num is
1990 ret = (int)readbytes;
1996 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1998 int ret = ssl_peek_internal(s, buf, num, readbytes);
2005 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2007 if (s->handshake_func == NULL) {
2008 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
2012 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2013 s->rwstate = SSL_NOTHING;
2014 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2018 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2019 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2020 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2021 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2024 /* If we are a client and haven't sent the Finished we better do that */
2025 ossl_statem_check_finish_init(s, 1);
2027 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2029 struct ssl_async_args args;
2032 args.buf = (void *)buf;
2034 args.type = WRITEFUNC;
2035 args.f.func_write = s->method->ssl_write;
2037 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2038 *written = s->asyncrw;
2041 return s->method->ssl_write(s, buf, num, written);
2045 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2049 if (s->handshake_func == NULL) {
2050 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2054 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2055 s->rwstate = SSL_NOTHING;
2056 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2060 if (!BIO_get_ktls_send(s->wbio)) {
2061 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2065 /* If we have an alert to send, lets send it */
2066 if (s->s3.alert_dispatch) {
2067 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2069 /* SSLfatal() already called if appropriate */
2072 /* if it went, fall through and send more stuff */
2075 s->rwstate = SSL_WRITING;
2076 if (BIO_flush(s->wbio) <= 0) {
2077 if (!BIO_should_retry(s->wbio)) {
2078 s->rwstate = SSL_NOTHING;
2081 set_sys_error(EAGAIN);
2087 #ifdef OPENSSL_NO_KTLS
2088 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2089 "can't call ktls_sendfile(), ktls disabled");
2092 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2094 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2095 if ((get_last_sys_error() == EAGAIN) ||
2096 (get_last_sys_error() == EINTR) ||
2097 (get_last_sys_error() == EBUSY))
2098 BIO_set_retry_write(s->wbio);
2101 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2104 s->rwstate = SSL_NOTHING;
2109 int SSL_write(SSL *s, const void *buf, int num)
2115 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2119 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2122 * The cast is safe here because ret should be <= INT_MAX because num is
2131 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2133 int ret = ssl_write_internal(s, buf, num, written);
2140 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2142 int ret, early_data_state;
2144 uint32_t partialwrite;
2146 switch (s->early_data_state) {
2147 case SSL_EARLY_DATA_NONE:
2149 || !SSL_in_before(s)
2150 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2151 && (s->psk_use_session_cb == NULL))) {
2152 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2153 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2158 case SSL_EARLY_DATA_CONNECT_RETRY:
2159 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2160 ret = SSL_connect(s);
2163 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2168 case SSL_EARLY_DATA_WRITE_RETRY:
2169 s->early_data_state = SSL_EARLY_DATA_WRITING;
2171 * We disable partial write for early data because we don't keep track
2172 * of how many bytes we've written between the SSL_write_ex() call and
2173 * the flush if the flush needs to be retried)
2175 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2176 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2177 ret = SSL_write_ex(s, buf, num, &writtmp);
2178 s->mode |= partialwrite;
2180 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2183 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2186 case SSL_EARLY_DATA_WRITE_FLUSH:
2187 /* The buffering BIO is still in place so we need to flush it */
2188 if (statem_flush(s) != 1)
2191 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2194 case SSL_EARLY_DATA_FINISHED_READING:
2195 case SSL_EARLY_DATA_READ_RETRY:
2196 early_data_state = s->early_data_state;
2197 /* We are a server writing to an unauthenticated client */
2198 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2199 ret = SSL_write_ex(s, buf, num, written);
2200 /* The buffering BIO is still in place */
2202 (void)BIO_flush(s->wbio);
2203 s->early_data_state = early_data_state;
2207 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2212 int SSL_shutdown(SSL *s)
2215 * Note that this function behaves differently from what one might
2216 * expect. Return values are 0 for no success (yet), 1 for success; but
2217 * calling it once is usually not enough, even if blocking I/O is used
2218 * (see ssl3_shutdown).
2221 if (s->handshake_func == NULL) {
2222 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2226 if (!SSL_in_init(s)) {
2227 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2228 struct ssl_async_args args;
2231 args.type = OTHERFUNC;
2232 args.f.func_other = s->method->ssl_shutdown;
2234 return ssl_start_async_job(s, &args, ssl_io_intern);
2236 return s->method->ssl_shutdown(s);
2239 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2244 int SSL_key_update(SSL *s, int updatetype)
2247 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2248 * negotiated, and that it is appropriate to call SSL_key_update() instead
2249 * of SSL_renegotiate().
2251 if (!SSL_IS_TLS13(s)) {
2252 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2256 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2257 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2258 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2262 if (!SSL_is_init_finished(s)) {
2263 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2267 ossl_statem_set_in_init(s, 1);
2268 s->key_update = updatetype;
2272 int SSL_get_key_update_type(const SSL *s)
2274 return s->key_update;
2277 int SSL_renegotiate(SSL *s)
2279 if (SSL_IS_TLS13(s)) {
2280 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2284 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2285 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2292 return s->method->ssl_renegotiate(s);
2295 int SSL_renegotiate_abbreviated(SSL *s)
2297 if (SSL_IS_TLS13(s)) {
2298 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2302 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2303 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2310 return s->method->ssl_renegotiate(s);
2313 int SSL_renegotiate_pending(const SSL *s)
2316 * becomes true when negotiation is requested; false again once a
2317 * handshake has finished
2319 return (s->renegotiate != 0);
2322 int SSL_new_session_ticket(SSL *s)
2324 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2325 || !SSL_IS_TLS13(s))
2327 s->ext.extra_tickets_expected++;
2331 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2336 case SSL_CTRL_GET_READ_AHEAD:
2337 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2338 case SSL_CTRL_SET_READ_AHEAD:
2339 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2340 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2343 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2344 s->msg_callback_arg = parg;
2348 return (s->mode |= larg);
2349 case SSL_CTRL_CLEAR_MODE:
2350 return (s->mode &= ~larg);
2351 case SSL_CTRL_GET_MAX_CERT_LIST:
2352 return (long)s->max_cert_list;
2353 case SSL_CTRL_SET_MAX_CERT_LIST:
2356 l = (long)s->max_cert_list;
2357 s->max_cert_list = (size_t)larg;
2359 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2360 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2362 #ifndef OPENSSL_NO_KTLS
2363 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2365 #endif /* OPENSSL_NO_KTLS */
2366 s->max_send_fragment = larg;
2367 if (s->max_send_fragment < s->split_send_fragment)
2368 s->split_send_fragment = s->max_send_fragment;
2370 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2371 if ((size_t)larg > s->max_send_fragment || larg == 0)
2373 s->split_send_fragment = larg;
2375 case SSL_CTRL_SET_MAX_PIPELINES:
2376 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2378 s->max_pipelines = larg;
2380 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2382 case SSL_CTRL_GET_RI_SUPPORT:
2383 return s->s3.send_connection_binding;
2384 case SSL_CTRL_CERT_FLAGS:
2385 return (s->cert->cert_flags |= larg);
2386 case SSL_CTRL_CLEAR_CERT_FLAGS:
2387 return (s->cert->cert_flags &= ~larg);
2389 case SSL_CTRL_GET_RAW_CIPHERLIST:
2391 if (s->s3.tmp.ciphers_raw == NULL)
2393 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2394 return (int)s->s3.tmp.ciphers_rawlen;
2396 return TLS_CIPHER_LEN;
2398 case SSL_CTRL_GET_EXTMS_SUPPORT:
2399 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2401 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2405 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2406 return ssl_check_allowed_versions(larg, s->max_proto_version)
2407 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2408 &s->min_proto_version);
2409 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2410 return s->min_proto_version;
2411 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2412 return ssl_check_allowed_versions(s->min_proto_version, larg)
2413 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2414 &s->max_proto_version);
2415 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2416 return s->max_proto_version;
2418 return s->method->ssl_ctrl(s, cmd, larg, parg);
2422 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2425 case SSL_CTRL_SET_MSG_CALLBACK:
2426 s->msg_callback = (void (*)
2427 (int write_p, int version, int content_type,
2428 const void *buf, size_t len, SSL *ssl,
2433 return s->method->ssl_callback_ctrl(s, cmd, fp);
2437 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2439 return ctx->sessions;
2442 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2445 /* For some cases with ctx == NULL perform syntax checks */
2448 case SSL_CTRL_SET_GROUPS_LIST:
2449 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2450 case SSL_CTRL_SET_SIGALGS_LIST:
2451 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2452 return tls1_set_sigalgs_list(NULL, parg, 0);
2459 case SSL_CTRL_GET_READ_AHEAD:
2460 return ctx->read_ahead;
2461 case SSL_CTRL_SET_READ_AHEAD:
2462 l = ctx->read_ahead;
2463 ctx->read_ahead = larg;
2466 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2467 ctx->msg_callback_arg = parg;
2470 case SSL_CTRL_GET_MAX_CERT_LIST:
2471 return (long)ctx->max_cert_list;
2472 case SSL_CTRL_SET_MAX_CERT_LIST:
2475 l = (long)ctx->max_cert_list;
2476 ctx->max_cert_list = (size_t)larg;
2479 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2482 l = (long)ctx->session_cache_size;
2483 ctx->session_cache_size = (size_t)larg;
2485 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2486 return (long)ctx->session_cache_size;
2487 case SSL_CTRL_SET_SESS_CACHE_MODE:
2488 l = ctx->session_cache_mode;
2489 ctx->session_cache_mode = larg;
2491 case SSL_CTRL_GET_SESS_CACHE_MODE:
2492 return ctx->session_cache_mode;
2494 case SSL_CTRL_SESS_NUMBER:
2495 return lh_SSL_SESSION_num_items(ctx->sessions);
2496 case SSL_CTRL_SESS_CONNECT:
2497 return tsan_load(&ctx->stats.sess_connect);
2498 case SSL_CTRL_SESS_CONNECT_GOOD:
2499 return tsan_load(&ctx->stats.sess_connect_good);
2500 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2501 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2502 case SSL_CTRL_SESS_ACCEPT:
2503 return tsan_load(&ctx->stats.sess_accept);
2504 case SSL_CTRL_SESS_ACCEPT_GOOD:
2505 return tsan_load(&ctx->stats.sess_accept_good);
2506 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2507 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2508 case SSL_CTRL_SESS_HIT:
2509 return tsan_load(&ctx->stats.sess_hit);
2510 case SSL_CTRL_SESS_CB_HIT:
2511 return tsan_load(&ctx->stats.sess_cb_hit);
2512 case SSL_CTRL_SESS_MISSES:
2513 return tsan_load(&ctx->stats.sess_miss);
2514 case SSL_CTRL_SESS_TIMEOUTS:
2515 return tsan_load(&ctx->stats.sess_timeout);
2516 case SSL_CTRL_SESS_CACHE_FULL:
2517 return tsan_load(&ctx->stats.sess_cache_full);
2519 return (ctx->mode |= larg);
2520 case SSL_CTRL_CLEAR_MODE:
2521 return (ctx->mode &= ~larg);
2522 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2523 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2525 ctx->max_send_fragment = larg;
2526 if (ctx->max_send_fragment < ctx->split_send_fragment)
2527 ctx->split_send_fragment = ctx->max_send_fragment;
2529 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2530 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2532 ctx->split_send_fragment = larg;
2534 case SSL_CTRL_SET_MAX_PIPELINES:
2535 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2537 ctx->max_pipelines = larg;
2539 case SSL_CTRL_CERT_FLAGS:
2540 return (ctx->cert->cert_flags |= larg);
2541 case SSL_CTRL_CLEAR_CERT_FLAGS:
2542 return (ctx->cert->cert_flags &= ~larg);
2543 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2544 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2545 && ssl_set_version_bound(ctx->method->version, (int)larg,
2546 &ctx->min_proto_version);
2547 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2548 return ctx->min_proto_version;
2549 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2550 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2551 && ssl_set_version_bound(ctx->method->version, (int)larg,
2552 &ctx->max_proto_version);
2553 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2554 return ctx->max_proto_version;
2556 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2560 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2563 case SSL_CTRL_SET_MSG_CALLBACK:
2564 ctx->msg_callback = (void (*)
2565 (int write_p, int version, int content_type,
2566 const void *buf, size_t len, SSL *ssl,
2571 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2575 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2584 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2585 const SSL_CIPHER *const *bp)
2587 if ((*ap)->id > (*bp)->id)
2589 if ((*ap)->id < (*bp)->id)
2594 /** return a STACK of the ciphers available for the SSL and in order of
2596 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2599 if (s->cipher_list != NULL) {
2600 return s->cipher_list;
2601 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2602 return s->ctx->cipher_list;
2608 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2610 if ((s == NULL) || !s->server)
2612 return s->peer_ciphers;
2615 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2617 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2620 ciphers = SSL_get_ciphers(s);
2623 if (!ssl_set_client_disabled(s))
2625 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2626 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2627 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2629 sk = sk_SSL_CIPHER_new_null();
2632 if (!sk_SSL_CIPHER_push(sk, c)) {
2633 sk_SSL_CIPHER_free(sk);
2641 /** return a STACK of the ciphers available for the SSL and in order of
2643 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2646 if (s->cipher_list_by_id != NULL) {
2647 return s->cipher_list_by_id;
2648 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2649 return s->ctx->cipher_list_by_id;
2655 /** The old interface to get the same thing as SSL_get_ciphers() */
2656 const char *SSL_get_cipher_list(const SSL *s, int n)
2658 const SSL_CIPHER *c;
2659 STACK_OF(SSL_CIPHER) *sk;
2663 sk = SSL_get_ciphers(s);
2664 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2666 c = sk_SSL_CIPHER_value(sk, n);
2672 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2674 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2677 return ctx->cipher_list;
2682 * Distinguish between ciphers controlled by set_ciphersuite() and
2683 * set_cipher_list() when counting.
2685 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2688 const SSL_CIPHER *c;
2692 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2693 c = sk_SSL_CIPHER_value(sk, i);
2694 if (c->min_tls >= TLS1_3_VERSION)
2701 /** specify the ciphers to be used by default by the SSL_CTX */
2702 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2704 STACK_OF(SSL_CIPHER) *sk;
2706 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2707 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2710 * ssl_create_cipher_list may return an empty stack if it was unable to
2711 * find a cipher matching the given rule string (for example if the rule
2712 * string specifies a cipher which has been disabled). This is not an
2713 * error as far as ssl_create_cipher_list is concerned, and hence
2714 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2718 else if (cipher_list_tls12_num(sk) == 0) {
2719 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2725 /** specify the ciphers to be used by the SSL */
2726 int SSL_set_cipher_list(SSL *s, const char *str)
2728 STACK_OF(SSL_CIPHER) *sk;
2730 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2731 &s->cipher_list, &s->cipher_list_by_id, str,
2733 /* see comment in SSL_CTX_set_cipher_list */
2736 else if (cipher_list_tls12_num(sk) == 0) {
2737 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2743 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2746 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2747 const SSL_CIPHER *c;
2751 || s->peer_ciphers == NULL
2756 clntsk = s->peer_ciphers;
2757 srvrsk = SSL_get_ciphers(s);
2758 if (clntsk == NULL || srvrsk == NULL)
2761 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2764 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2767 c = sk_SSL_CIPHER_value(clntsk, i);
2768 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2771 n = strlen(c->name);
2788 * Return the requested servername (SNI) value. Note that the behaviour varies
2790 * - whether this is called by the client or the server,
2791 * - if we are before or during/after the handshake,
2792 * - if a resumption or normal handshake is being attempted/has occurred
2793 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2795 * Note that only the host_name type is defined (RFC 3546).
2797 const char *SSL_get_servername(const SSL *s, const int type)
2800 * If we don't know if we are the client or the server yet then we assume
2803 int server = s->handshake_func == NULL ? 0 : s->server;
2804 if (type != TLSEXT_NAMETYPE_host_name)
2810 * In TLSv1.3 on the server SNI is not associated with the session
2811 * but in TLSv1.2 or below it is.
2813 * Before the handshake:
2816 * During/after the handshake (TLSv1.2 or below resumption occurred):
2817 * - If a servername was accepted by the server in the original
2818 * handshake then it will return that servername, or NULL otherwise.
2820 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2821 * - The function will return the servername requested by the client in
2822 * this handshake or NULL if none was requested.
2824 if (s->hit && !SSL_IS_TLS13(s))
2825 return s->session->ext.hostname;
2830 * Before the handshake:
2831 * - If a servername has been set via a call to
2832 * SSL_set_tlsext_host_name() then it will return that servername
2833 * - If one has not been set, but a TLSv1.2 resumption is being
2834 * attempted and the session from the original handshake had a
2835 * servername accepted by the server then it will return that
2837 * - Otherwise it returns NULL
2839 * During/after the handshake (TLSv1.2 or below resumption occurred):
2840 * - If the session from the orignal handshake had a servername accepted
2841 * by the server then it will return that servername.
2842 * - Otherwise it returns the servername set via
2843 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2845 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2846 * - It will return the servername set via SSL_set_tlsext_host_name()
2847 * (or NULL if it was not called).
2849 if (SSL_in_before(s)) {
2850 if (s->ext.hostname == NULL
2851 && s->session != NULL
2852 && s->session->ssl_version != TLS1_3_VERSION)
2853 return s->session->ext.hostname;
2855 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2856 return s->session->ext.hostname;
2860 return s->ext.hostname;
2863 int SSL_get_servername_type(const SSL *s)
2865 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2866 return TLSEXT_NAMETYPE_host_name;
2871 * SSL_select_next_proto implements the standard protocol selection. It is
2872 * expected that this function is called from the callback set by
2873 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2874 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2875 * not included in the length. A byte string of length 0 is invalid. No byte
2876 * string may be truncated. The current, but experimental algorithm for
2877 * selecting the protocol is: 1) If the server doesn't support NPN then this
2878 * is indicated to the callback. In this case, the client application has to
2879 * abort the connection or have a default application level protocol. 2) If
2880 * the server supports NPN, but advertises an empty list then the client
2881 * selects the first protocol in its list, but indicates via the API that this
2882 * fallback case was enacted. 3) Otherwise, the client finds the first
2883 * protocol in the server's list that it supports and selects this protocol.
2884 * This is because it's assumed that the server has better information about
2885 * which protocol a client should use. 4) If the client doesn't support any
2886 * of the server's advertised protocols, then this is treated the same as
2887 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2888 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2890 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2891 const unsigned char *server,
2892 unsigned int server_len,
2893 const unsigned char *client, unsigned int client_len)
2896 const unsigned char *result;
2897 int status = OPENSSL_NPN_UNSUPPORTED;
2900 * For each protocol in server preference order, see if we support it.
2902 for (i = 0; i < server_len;) {
2903 for (j = 0; j < client_len;) {
2904 if (server[i] == client[j] &&
2905 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2906 /* We found a match */
2907 result = &server[i];
2908 status = OPENSSL_NPN_NEGOTIATED;
2918 /* There's no overlap between our protocols and the server's list. */
2920 status = OPENSSL_NPN_NO_OVERLAP;
2923 *out = (unsigned char *)result + 1;
2924 *outlen = result[0];
2928 #ifndef OPENSSL_NO_NEXTPROTONEG
2930 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2931 * client's requested protocol for this connection and returns 0. If the
2932 * client didn't request any protocol, then *data is set to NULL. Note that
2933 * the client can request any protocol it chooses. The value returned from
2934 * this function need not be a member of the list of supported protocols
2935 * provided by the callback.
2937 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2941 if (*data == NULL) {
2944 *len = (unsigned int)s->ext.npn_len;
2949 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2950 * a TLS server needs a list of supported protocols for Next Protocol
2951 * Negotiation. The returned list must be in wire format. The list is
2952 * returned by setting |out| to point to it and |outlen| to its length. This
2953 * memory will not be modified, but one should assume that the SSL* keeps a
2954 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2955 * wishes to advertise. Otherwise, no such extension will be included in the
2958 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2959 SSL_CTX_npn_advertised_cb_func cb,
2962 ctx->ext.npn_advertised_cb = cb;
2963 ctx->ext.npn_advertised_cb_arg = arg;
2967 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2968 * client needs to select a protocol from the server's provided list. |out|
2969 * must be set to point to the selected protocol (which may be within |in|).
2970 * The length of the protocol name must be written into |outlen|. The
2971 * server's advertised protocols are provided in |in| and |inlen|. The
2972 * callback can assume that |in| is syntactically valid. The client must
2973 * select a protocol. It is fatal to the connection if this callback returns
2974 * a value other than SSL_TLSEXT_ERR_OK.
2976 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2977 SSL_CTX_npn_select_cb_func cb,
2980 ctx->ext.npn_select_cb = cb;
2981 ctx->ext.npn_select_cb_arg = arg;
2986 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2987 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2988 * length-prefixed strings). Returns 0 on success.
2990 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2991 unsigned int protos_len)
2993 OPENSSL_free(ctx->ext.alpn);
2994 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2995 if (ctx->ext.alpn == NULL) {
2996 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2999 ctx->ext.alpn_len = protos_len;
3005 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3006 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3007 * length-prefixed strings). Returns 0 on success.
3009 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3010 unsigned int protos_len)
3012 OPENSSL_free(ssl->ext.alpn);
3013 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
3014 if (ssl->ext.alpn == NULL) {
3015 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3018 ssl->ext.alpn_len = protos_len;
3024 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3025 * called during ClientHello processing in order to select an ALPN protocol
3026 * from the client's list of offered protocols.
3028 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3029 SSL_CTX_alpn_select_cb_func cb,
3032 ctx->ext.alpn_select_cb = cb;
3033 ctx->ext.alpn_select_cb_arg = arg;
3037 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3038 * On return it sets |*data| to point to |*len| bytes of protocol name
3039 * (not including the leading length-prefix byte). If the server didn't
3040 * respond with a negotiated protocol then |*len| will be zero.
3042 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3045 *data = ssl->s3.alpn_selected;
3049 *len = (unsigned int)ssl->s3.alpn_selected_len;
3052 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3053 const char *label, size_t llen,
3054 const unsigned char *context, size_t contextlen,
3057 if (s->session == NULL
3058 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3061 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3063 contextlen, use_context);
3066 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3067 const char *label, size_t llen,
3068 const unsigned char *context,
3071 if (s->version != TLS1_3_VERSION)
3074 return tls13_export_keying_material_early(s, out, olen, label, llen,
3075 context, contextlen);
3078 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3080 const unsigned char *session_id = a->session_id;
3082 unsigned char tmp_storage[4];
3084 if (a->session_id_length < sizeof(tmp_storage)) {
3085 memset(tmp_storage, 0, sizeof(tmp_storage));
3086 memcpy(tmp_storage, a->session_id, a->session_id_length);
3087 session_id = tmp_storage;
3091 ((unsigned long)session_id[0]) |
3092 ((unsigned long)session_id[1] << 8L) |
3093 ((unsigned long)session_id[2] << 16L) |
3094 ((unsigned long)session_id[3] << 24L);
3099 * NB: If this function (or indeed the hash function which uses a sort of
3100 * coarser function than this one) is changed, ensure
3101 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3102 * being able to construct an SSL_SESSION that will collide with any existing
3103 * session with a matching session ID.
3105 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3107 if (a->ssl_version != b->ssl_version)
3109 if (a->session_id_length != b->session_id_length)
3111 return memcmp(a->session_id, b->session_id, a->session_id_length);
3115 * These wrapper functions should remain rather than redeclaring
3116 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3117 * variable. The reason is that the functions aren't static, they're exposed
3121 SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3122 const SSL_METHOD *meth)
3124 SSL_CTX *ret = NULL;
3127 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
3131 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3134 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3135 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3138 ret = OPENSSL_zalloc(sizeof(*ret));
3142 ret->libctx = libctx;
3143 if (propq != NULL) {
3144 ret->propq = OPENSSL_strdup(propq);
3145 if (ret->propq == NULL)
3150 ret->min_proto_version = 0;
3151 ret->max_proto_version = 0;
3152 ret->mode = SSL_MODE_AUTO_RETRY;
3153 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3154 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3155 /* We take the system default. */
3156 ret->session_timeout = meth->get_timeout();
3157 ret->references = 1;
3158 ret->lock = CRYPTO_THREAD_lock_new();
3159 if (ret->lock == NULL) {
3160 SSLerr(0, ERR_R_MALLOC_FAILURE);
3164 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3165 ret->verify_mode = SSL_VERIFY_NONE;
3166 if ((ret->cert = ssl_cert_new()) == NULL)
3169 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3170 if (ret->sessions == NULL)
3172 ret->cert_store = X509_STORE_new();
3173 if (ret->cert_store == NULL)
3175 #ifndef OPENSSL_NO_CT
3176 ret->ctlog_store = CTLOG_STORE_new_with_libctx(libctx, propq);
3177 if (ret->ctlog_store == NULL)
3181 /* initialize cipher/digest methods table */
3182 if (!ssl_load_ciphers(ret))
3184 /* initialise sig algs */
3185 if (!ssl_setup_sig_algs(ret))
3189 if (!ssl_load_groups(ret))
3192 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3195 if (!ssl_create_cipher_list(ret->method,
3196 ret->tls13_ciphersuites,
3197 &ret->cipher_list, &ret->cipher_list_by_id,
3198 OSSL_default_cipher_list(), ret->cert)
3199 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3200 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3204 ret->param = X509_VERIFY_PARAM_new();
3205 if (ret->param == NULL)
3209 * If these aren't available from the provider we'll get NULL returns.
3210 * That's fine but will cause errors later if SSLv3 is negotiated
3212 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3213 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3215 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3218 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3221 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3224 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3227 /* No compression for DTLS */
3228 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3229 ret->comp_methods = SSL_COMP_get_compression_methods();
3231 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3232 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3234 /* Setup RFC5077 ticket keys */
3235 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3236 sizeof(ret->ext.tick_key_name)) <= 0)
3237 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3238 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3239 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3240 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3241 ret->options |= SSL_OP_NO_TICKET;
3243 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3244 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3247 #ifndef OPENSSL_NO_SRP
3248 if (!SSL_CTX_SRP_CTX_init(ret))
3251 #ifndef OPENSSL_NO_ENGINE
3252 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3253 # define eng_strx(x) #x
3254 # define eng_str(x) eng_strx(x)
3255 /* Use specific client engine automatically... ignore errors */
3258 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3261 ENGINE_load_builtin_engines();
3262 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3264 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3270 * Default is to connect to non-RI servers. When RI is more widely
3271 * deployed might change this.
3273 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3275 * Disable compression by default to prevent CRIME. Applications can
3276 * re-enable compression by configuring
3277 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3278 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3279 * middlebox compatibility by default. This may be disabled by default in
3280 * a later OpenSSL version.
3282 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3284 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3287 * We cannot usefully set a default max_early_data here (which gets
3288 * propagated in SSL_new(), for the following reason: setting the
3289 * SSL field causes tls_construct_stoc_early_data() to tell the
3290 * client that early data will be accepted when constructing a TLS 1.3
3291 * session ticket, and the client will accordingly send us early data
3292 * when using that ticket (if the client has early data to send).
3293 * However, in order for the early data to actually be consumed by
3294 * the application, the application must also have calls to
3295 * SSL_read_early_data(); otherwise we'll just skip past the early data
3296 * and ignore it. So, since the application must add calls to
3297 * SSL_read_early_data(), we also require them to add
3298 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3299 * eliminating the bandwidth-wasting early data in the case described
3302 ret->max_early_data = 0;
3305 * Default recv_max_early_data is a fully loaded single record. Could be
3306 * split across multiple records in practice. We set this differently to
3307 * max_early_data so that, in the default case, we do not advertise any
3308 * support for early_data, but if a client were to send us some (e.g.
3309 * because of an old, stale ticket) then we will tolerate it and skip over
3312 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3314 /* By default we send two session tickets automatically in TLSv1.3 */
3315 ret->num_tickets = 2;
3317 ssl_ctx_system_config(ret);
3321 SSLerr(0, ERR_R_MALLOC_FAILURE);
3327 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3329 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3332 int SSL_CTX_up_ref(SSL_CTX *ctx)
3336 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3339 REF_PRINT_COUNT("SSL_CTX", ctx);
3340 REF_ASSERT_ISNT(i < 2);
3341 return ((i > 1) ? 1 : 0);
3344 void SSL_CTX_free(SSL_CTX *a)
3352 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3353 REF_PRINT_COUNT("SSL_CTX", a);
3356 REF_ASSERT_ISNT(i < 0);
3358 X509_VERIFY_PARAM_free(a->param);
3359 dane_ctx_final(&a->dane);
3362 * Free internal session cache. However: the remove_cb() may reference
3363 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3364 * after the sessions were flushed.
3365 * As the ex_data handling routines might also touch the session cache,
3366 * the most secure solution seems to be: empty (flush) the cache, then
3367 * free ex_data, then finally free the cache.
3368 * (See ticket [openssl.org #212].)
3370 if (a->sessions != NULL)
3371 SSL_CTX_flush_sessions(a, 0);
3373 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3374 lh_SSL_SESSION_free(a->sessions);
3375 X509_STORE_free(a->cert_store);
3376 #ifndef OPENSSL_NO_CT
3377 CTLOG_STORE_free(a->ctlog_store);
3379 sk_SSL_CIPHER_free(a->cipher_list);
3380 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3381 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3382 ssl_cert_free(a->cert);
3383 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3384 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3385 sk_X509_pop_free(a->extra_certs, X509_free);
3386 a->comp_methods = NULL;
3387 #ifndef OPENSSL_NO_SRTP
3388 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3390 #ifndef OPENSSL_NO_SRP
3391 SSL_CTX_SRP_CTX_free(a);
3393 #ifndef OPENSSL_NO_ENGINE
3394 ENGINE_finish(a->client_cert_engine);
3397 #ifndef OPENSSL_NO_EC
3398 OPENSSL_free(a->ext.ecpointformats);
3400 OPENSSL_free(a->ext.supportedgroups);
3401 OPENSSL_free(a->ext.alpn);
3402 OPENSSL_secure_free(a->ext.secure);
3404 ssl_evp_md_free(a->md5);
3405 ssl_evp_md_free(a->sha1);
3407 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3408 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3409 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3410 ssl_evp_md_free(a->ssl_digest_methods[j]);
3411 for (j = 0; j < a->group_list_len; j++) {
3412 OPENSSL_free(a->group_list[j].tlsname);
3413 OPENSSL_free(a->group_list[j].realname);
3414 OPENSSL_free(a->group_list[j].algorithm);
3416 OPENSSL_free(a->group_list);
3418 OPENSSL_free(a->sigalg_lookup_cache);
3420 CRYPTO_THREAD_lock_free(a->lock);
3422 OPENSSL_free(a->propq);
3427 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3429 ctx->default_passwd_callback = cb;
3432 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3434 ctx->default_passwd_callback_userdata = u;
3437 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3439 return ctx->default_passwd_callback;
3442 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3444 return ctx->default_passwd_callback_userdata;
3447 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3449 s->default_passwd_callback = cb;
3452 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3454 s->default_passwd_callback_userdata = u;
3457 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3459 return s->default_passwd_callback;
3462 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3464 return s->default_passwd_callback_userdata;
3467 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3468 int (*cb) (X509_STORE_CTX *, void *),
3471 ctx->app_verify_callback = cb;
3472 ctx->app_verify_arg = arg;
3475 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3476 int (*cb) (int, X509_STORE_CTX *))
3478 ctx->verify_mode = mode;
3479 ctx->default_verify_callback = cb;
3482 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3484 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3487 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3489 ssl_cert_set_cert_cb(c->cert, cb, arg);
3492 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3494 ssl_cert_set_cert_cb(s->cert, cb, arg);
3497 void ssl_set_masks(SSL *s)
3500 uint32_t *pvalid = s->s3.tmp.valid_flags;
3501 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3502 unsigned long mask_k, mask_a;
3503 #ifndef OPENSSL_NO_EC
3504 int have_ecc_cert, ecdsa_ok;
3509 #ifndef OPENSSL_NO_DH
3510 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3515 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3516 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3517 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3518 #ifndef OPENSSL_NO_EC
3519 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3524 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3525 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3527 #ifndef OPENSSL_NO_GOST
3528 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3529 mask_k |= SSL_kGOST | SSL_kGOST18;
3530 mask_a |= SSL_aGOST12;
3532 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3533 mask_k |= SSL_kGOST | SSL_kGOST18;
3534 mask_a |= SSL_aGOST12;
3536 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3537 mask_k |= SSL_kGOST;
3538 mask_a |= SSL_aGOST01;
3549 * If we only have an RSA-PSS certificate allow RSA authentication
3550 * if TLS 1.2 and peer supports it.
3553 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3554 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3555 && TLS1_get_version(s) == TLS1_2_VERSION))
3562 mask_a |= SSL_aNULL;
3565 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3566 * depending on the key usage extension.
3568 #ifndef OPENSSL_NO_EC
3569 if (have_ecc_cert) {
3571 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3572 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3573 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3576 mask_a |= SSL_aECDSA;
3578 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3579 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3580 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3581 && TLS1_get_version(s) == TLS1_2_VERSION)
3582 mask_a |= SSL_aECDSA;
3584 /* Allow Ed448 for TLS 1.2 if peer supports it */
3585 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3586 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3587 && TLS1_get_version(s) == TLS1_2_VERSION)
3588 mask_a |= SSL_aECDSA;
3591 #ifndef OPENSSL_NO_EC
3592 mask_k |= SSL_kECDHE;
3595 #ifndef OPENSSL_NO_PSK
3598 if (mask_k & SSL_kRSA)
3599 mask_k |= SSL_kRSAPSK;
3600 if (mask_k & SSL_kDHE)
3601 mask_k |= SSL_kDHEPSK;
3602 if (mask_k & SSL_kECDHE)
3603 mask_k |= SSL_kECDHEPSK;
3606 s->s3.tmp.mask_k = mask_k;
3607 s->s3.tmp.mask_a = mask_a;
3610 #ifndef OPENSSL_NO_EC
3612 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3614 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3615 /* key usage, if present, must allow signing */
3616 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3617 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3618 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3622 return 1; /* all checks are ok */
3627 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3628 size_t *serverinfo_length)
3630 CERT_PKEY *cpk = s->s3.tmp.cert;
3631 *serverinfo_length = 0;
3633 if (cpk == NULL || cpk->serverinfo == NULL)
3636 *serverinfo = cpk->serverinfo;
3637 *serverinfo_length = cpk->serverinfo_length;
3641 void ssl_update_cache(SSL *s, int mode)
3646 * If the session_id_length is 0, we are not supposed to cache it, and it
3647 * would be rather hard to do anyway :-)
3649 if (s->session->session_id_length == 0)
3653 * If sid_ctx_length is 0 there is no specific application context
3654 * associated with this session, so when we try to resume it and
3655 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3656 * indication that this is actually a session for the proper application
3657 * context, and the *handshake* will fail, not just the resumption attempt.
3658 * Do not cache (on the server) these sessions that are not resumable
3659 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3661 if (s->server && s->session->sid_ctx_length == 0
3662 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3665 i = s->session_ctx->session_cache_mode;
3667 && (!s->hit || SSL_IS_TLS13(s))) {
3669 * Add the session to the internal cache. In server side TLSv1.3 we
3670 * normally don't do this because by default it's a full stateless ticket
3671 * with only a dummy session id so there is no reason to cache it,
3673 * - we are doing early_data, in which case we cache so that we can
3675 * - the application has set a remove_session_cb so needs to know about
3676 * session timeout events
3677 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3679 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3680 && (!SSL_IS_TLS13(s)
3682 || (s->max_early_data > 0
3683 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3684 || s->session_ctx->remove_session_cb != NULL
3685 || (s->options & SSL_OP_NO_TICKET) != 0))
3686 SSL_CTX_add_session(s->session_ctx, s->session);
3689 * Add the session to the external cache. We do this even in server side
3690 * TLSv1.3 without early data because some applications just want to
3691 * know about the creation of a session and aren't doing a full cache.
3693 if (s->session_ctx->new_session_cb != NULL) {
3694 SSL_SESSION_up_ref(s->session);
3695 if (!s->session_ctx->new_session_cb(s, s->session))
3696 SSL_SESSION_free(s->session);
3700 /* auto flush every 255 connections */
3701 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3702 TSAN_QUALIFIER int *stat;
3703 if (mode & SSL_SESS_CACHE_CLIENT)
3704 stat = &s->session_ctx->stats.sess_connect_good;
3706 stat = &s->session_ctx->stats.sess_accept_good;
3707 if ((tsan_load(stat) & 0xff) == 0xff)
3708 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3712 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3717 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3722 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3726 if (s->method != meth) {
3727 const SSL_METHOD *sm = s->method;
3728 int (*hf) (SSL *) = s->handshake_func;
3730 if (sm->version == meth->version)
3735 ret = s->method->ssl_new(s);
3738 if (hf == sm->ssl_connect)
3739 s->handshake_func = meth->ssl_connect;
3740 else if (hf == sm->ssl_accept)
3741 s->handshake_func = meth->ssl_accept;
3746 int SSL_get_error(const SSL *s, int i)
3753 return SSL_ERROR_NONE;
3756 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3757 * where we do encode the error
3759 if ((l = ERR_peek_error()) != 0) {
3760 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3761 return SSL_ERROR_SYSCALL;
3763 return SSL_ERROR_SSL;
3766 if (SSL_want_read(s)) {
3767 bio = SSL_get_rbio(s);
3768 if (BIO_should_read(bio))
3769 return SSL_ERROR_WANT_READ;
3770 else if (BIO_should_write(bio))
3772 * This one doesn't make too much sense ... We never try to write
3773 * to the rbio, and an application program where rbio and wbio
3774 * are separate couldn't even know what it should wait for.
3775 * However if we ever set s->rwstate incorrectly (so that we have
3776 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3777 * wbio *are* the same, this test works around that bug; so it
3778 * might be safer to keep it.
3780 return SSL_ERROR_WANT_WRITE;
3781 else if (BIO_should_io_special(bio)) {
3782 reason = BIO_get_retry_reason(bio);
3783 if (reason == BIO_RR_CONNECT)
3784 return SSL_ERROR_WANT_CONNECT;
3785 else if (reason == BIO_RR_ACCEPT)
3786 return SSL_ERROR_WANT_ACCEPT;
3788 return SSL_ERROR_SYSCALL; /* unknown */
3792 if (SSL_want_write(s)) {
3793 /* Access wbio directly - in order to use the buffered bio if present */
3795 if (BIO_should_write(bio))
3796 return SSL_ERROR_WANT_WRITE;
3797 else if (BIO_should_read(bio))
3799 * See above (SSL_want_read(s) with BIO_should_write(bio))
3801 return SSL_ERROR_WANT_READ;
3802 else if (BIO_should_io_special(bio)) {
3803 reason = BIO_get_retry_reason(bio);
3804 if (reason == BIO_RR_CONNECT)
3805 return SSL_ERROR_WANT_CONNECT;
3806 else if (reason == BIO_RR_ACCEPT)
3807 return SSL_ERROR_WANT_ACCEPT;
3809 return SSL_ERROR_SYSCALL;
3812 if (SSL_want_x509_lookup(s))
3813 return SSL_ERROR_WANT_X509_LOOKUP;
3814 if (SSL_want_async(s))
3815 return SSL_ERROR_WANT_ASYNC;
3816 if (SSL_want_async_job(s))
3817 return SSL_ERROR_WANT_ASYNC_JOB;
3818 if (SSL_want_client_hello_cb(s))
3819 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3821 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3822 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3823 return SSL_ERROR_ZERO_RETURN;
3825 return SSL_ERROR_SYSCALL;
3828 static int ssl_do_handshake_intern(void *vargs)
3830 struct ssl_async_args *args;
3833 args = (struct ssl_async_args *)vargs;
3836 return s->handshake_func(s);
3839 int SSL_do_handshake(SSL *s)
3843 if (s->handshake_func == NULL) {
3844 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3848 ossl_statem_check_finish_init(s, -1);
3850 s->method->ssl_renegotiate_check(s, 0);
3852 if (SSL_in_init(s) || SSL_in_before(s)) {
3853 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3854 struct ssl_async_args args;
3858 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3860 ret = s->handshake_func(s);
3866 void SSL_set_accept_state(SSL *s)
3870 ossl_statem_clear(s);
3871 s->handshake_func = s->method->ssl_accept;
3875 void SSL_set_connect_state(SSL *s)
3879 ossl_statem_clear(s);
3880 s->handshake_func = s->method->ssl_connect;
3884 int ssl_undefined_function(SSL *s)
3886 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3890 int ssl_undefined_void_function(void)
3892 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3893 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3897 int ssl_undefined_const_function(const SSL *s)
3902 const SSL_METHOD *ssl_bad_method(int ver)
3904 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3908 const char *ssl_protocol_to_string(int version)
3912 case TLS1_3_VERSION:
3915 case TLS1_2_VERSION:
3918 case TLS1_1_VERSION:
3933 case DTLS1_2_VERSION:
3941 const char *SSL_get_version(const SSL *s)
3943 return ssl_protocol_to_string(s->version);
3946 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3948 STACK_OF(X509_NAME) *sk;
3957 if ((sk = sk_X509_NAME_new_null()) == NULL)
3959 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3960 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3962 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3965 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3967 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3976 SSL *SSL_dup(SSL *s)
3981 /* If we're not quiescent, just up_ref! */
3982 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3983 CRYPTO_UP_REF(&s->references, &i, s->lock);
3988 * Otherwise, copy configuration state, and session if set.
3990 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3993 if (s->session != NULL) {
3995 * Arranges to share the same session via up_ref. This "copies"
3996 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3998 if (!SSL_copy_session_id(ret, s))
4002 * No session has been established yet, so we have to expect that
4003 * s->cert or ret->cert will be changed later -- they should not both
4004 * point to the same object, and thus we can't use
4005 * SSL_copy_session_id.
4007 if (!SSL_set_ssl_method(ret, s->method))
4010 if (s->cert != NULL) {
4011 ssl_cert_free(ret->cert);
4012 ret->cert = ssl_cert_dup(s->cert);
4013 if (ret->cert == NULL)
4017 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4018 (int)s->sid_ctx_length))
4022 if (!ssl_dane_dup(ret, s))
4024 ret->version = s->version;
4025 ret->options = s->options;
4026 ret->min_proto_version = s->min_proto_version;
4027 ret->max_proto_version = s->max_proto_version;
4028 ret->mode = s->mode;
4029 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4030 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4031 ret->msg_callback = s->msg_callback;
4032 ret->msg_callback_arg = s->msg_callback_arg;
4033 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4034 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4035 ret->generate_session_id = s->generate_session_id;
4037 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4039 /* copy app data, a little dangerous perhaps */
4040 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4043 ret->server = s->server;
4044 if (s->handshake_func) {
4046 SSL_set_accept_state(ret);
4048 SSL_set_connect_state(ret);
4050 ret->shutdown = s->shutdown;
4053 ret->default_passwd_callback = s->default_passwd_callback;
4054 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4056 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4058 /* dup the cipher_list and cipher_list_by_id stacks */
4059 if (s->cipher_list != NULL) {
4060 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4063 if (s->cipher_list_by_id != NULL)
4064 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4068 /* Dup the client_CA list */
4069 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4070 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4080 void ssl_clear_cipher_ctx(SSL *s)
4082 if (s->enc_read_ctx != NULL) {
4083 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4084 s->enc_read_ctx = NULL;
4086 if (s->enc_write_ctx != NULL) {
4087 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4088 s->enc_write_ctx = NULL;
4090 #ifndef OPENSSL_NO_COMP
4091 COMP_CTX_free(s->expand);
4093 COMP_CTX_free(s->compress);
4098 X509 *SSL_get_certificate(const SSL *s)
4100 if (s->cert != NULL)
4101 return s->cert->key->x509;
4106 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4108 if (s->cert != NULL)
4109 return s->cert->key->privatekey;
4114 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4116 if (ctx->cert != NULL)
4117 return ctx->cert->key->x509;
4122 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4124 if (ctx->cert != NULL)
4125 return ctx->cert->key->privatekey;
4130 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4132 if ((s->session != NULL) && (s->session->cipher != NULL))
4133 return s->session->cipher;
4137 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4139 return s->s3.tmp.new_cipher;
4142 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4144 #ifndef OPENSSL_NO_COMP
4145 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4151 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4153 #ifndef OPENSSL_NO_COMP
4154 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4160 int ssl_init_wbio_buffer(SSL *s)
4164 if (s->bbio != NULL) {
4165 /* Already buffered. */
4169 bbio = BIO_new(BIO_f_buffer());
4170 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4172 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4176 s->wbio = BIO_push(bbio, s->wbio);
4181 int ssl_free_wbio_buffer(SSL *s)
4183 /* callers ensure s is never null */
4184 if (s->bbio == NULL)
4187 s->wbio = BIO_pop(s->wbio);
4194 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4196 ctx->quiet_shutdown = mode;
4199 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4201 return ctx->quiet_shutdown;
4204 void SSL_set_quiet_shutdown(SSL *s, int mode)
4206 s->quiet_shutdown = mode;
4209 int SSL_get_quiet_shutdown(const SSL *s)
4211 return s->quiet_shutdown;
4214 void SSL_set_shutdown(SSL *s, int mode)
4219 int SSL_get_shutdown(const SSL *s)
4224 int SSL_version(const SSL *s)
4229 int SSL_client_version(const SSL *s)
4231 return s->client_version;
4234 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4239 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4242 if (ssl->ctx == ctx)
4245 ctx = ssl->session_ctx;
4246 new_cert = ssl_cert_dup(ctx->cert);
4247 if (new_cert == NULL) {
4251 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4252 ssl_cert_free(new_cert);
4256 ssl_cert_free(ssl->cert);
4257 ssl->cert = new_cert;
4260 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4261 * so setter APIs must prevent invalid lengths from entering the system.
4263 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4267 * If the session ID context matches that of the parent SSL_CTX,
4268 * inherit it from the new SSL_CTX as well. If however the context does
4269 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4270 * leave it unchanged.
4272 if ((ssl->ctx != NULL) &&
4273 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4274 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4275 ssl->sid_ctx_length = ctx->sid_ctx_length;
4276 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4279 SSL_CTX_up_ref(ctx);
4280 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4286 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4288 return X509_STORE_set_default_paths_with_libctx(ctx->cert_store,
4289 ctx->libctx, ctx->propq);
4292 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4294 X509_LOOKUP *lookup;
4296 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4300 /* We ignore errors, in case the directory doesn't exist */
4303 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4310 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4312 X509_LOOKUP *lookup;
4314 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4318 /* We ignore errors, in case the directory doesn't exist */
4321 X509_LOOKUP_load_file_with_libctx(lookup, NULL, X509_FILETYPE_DEFAULT,
4322 ctx->libctx, ctx->propq);
4329 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4331 X509_LOOKUP *lookup;
4333 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4337 /* We ignore errors, in case the directory doesn't exist */
4340 X509_LOOKUP_add_store_with_libctx(lookup, NULL, ctx->libctx, ctx->propq);
4347 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4349 return X509_STORE_load_file_with_libctx(ctx->cert_store, CAfile,
4350 ctx->libctx, ctx->propq);
4353 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4355 return X509_STORE_load_path(ctx->cert_store, CApath);
4358 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4360 return X509_STORE_load_store_with_libctx(ctx->cert_store, CAstore,
4361 ctx->libctx, ctx->propq);
4364 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4367 if (CAfile == NULL && CApath == NULL)
4369 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4371 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4376 void SSL_set_info_callback(SSL *ssl,
4377 void (*cb) (const SSL *ssl, int type, int val))
4379 ssl->info_callback = cb;
4383 * One compiler (Diab DCC) doesn't like argument names in returned function
4386 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4389 return ssl->info_callback;
4392 void SSL_set_verify_result(SSL *ssl, long arg)
4394 ssl->verify_result = arg;
4397 long SSL_get_verify_result(const SSL *ssl)
4399 return ssl->verify_result;
4402 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4405 return sizeof(ssl->s3.client_random);
4406 if (outlen > sizeof(ssl->s3.client_random))
4407 outlen = sizeof(ssl->s3.client_random);
4408 memcpy(out, ssl->s3.client_random, outlen);
4412 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4415 return sizeof(ssl->s3.server_random);
4416 if (outlen > sizeof(ssl->s3.server_random))
4417 outlen = sizeof(ssl->s3.server_random);
4418 memcpy(out, ssl->s3.server_random, outlen);
4422 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4423 unsigned char *out, size_t outlen)
4426 return session->master_key_length;
4427 if (outlen > session->master_key_length)
4428 outlen = session->master_key_length;
4429 memcpy(out, session->master_key, outlen);
4433 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4436 if (len > sizeof(sess->master_key))
4439 memcpy(sess->master_key, in, len);
4440 sess->master_key_length = len;
4445 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4447 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4450 void *SSL_get_ex_data(const SSL *s, int idx)
4452 return CRYPTO_get_ex_data(&s->ex_data, idx);
4455 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4457 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4460 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4462 return CRYPTO_get_ex_data(&s->ex_data, idx);
4465 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4467 return ctx->cert_store;
4470 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4472 X509_STORE_free(ctx->cert_store);
4473 ctx->cert_store = store;
4476 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4479 X509_STORE_up_ref(store);
4480 SSL_CTX_set_cert_store(ctx, store);
4483 int SSL_want(const SSL *s)
4489 * \brief Set the callback for generating temporary DH keys.
4490 * \param ctx the SSL context.
4491 * \param dh the callback
4494 #ifndef OPENSSL_NO_DH
4495 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4496 DH *(*dh) (SSL *ssl, int is_export,
4499 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4502 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4505 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4509 #ifndef OPENSSL_NO_PSK
4510 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4512 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4513 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4516 OPENSSL_free(ctx->cert->psk_identity_hint);
4517 if (identity_hint != NULL) {
4518 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4519 if (ctx->cert->psk_identity_hint == NULL)
4522 ctx->cert->psk_identity_hint = NULL;
4526 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4531 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4532 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4535 OPENSSL_free(s->cert->psk_identity_hint);
4536 if (identity_hint != NULL) {
4537 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4538 if (s->cert->psk_identity_hint == NULL)
4541 s->cert->psk_identity_hint = NULL;
4545 const char *SSL_get_psk_identity_hint(const SSL *s)
4547 if (s == NULL || s->session == NULL)
4549 return s->session->psk_identity_hint;
4552 const char *SSL_get_psk_identity(const SSL *s)
4554 if (s == NULL || s->session == NULL)
4556 return s->session->psk_identity;
4559 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4561 s->psk_client_callback = cb;
4564 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4566 ctx->psk_client_callback = cb;
4569 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4571 s->psk_server_callback = cb;
4574 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4576 ctx->psk_server_callback = cb;
4580 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4582 s->psk_find_session_cb = cb;
4585 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4586 SSL_psk_find_session_cb_func cb)
4588 ctx->psk_find_session_cb = cb;
4591 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4593 s->psk_use_session_cb = cb;
4596 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4597 SSL_psk_use_session_cb_func cb)
4599 ctx->psk_use_session_cb = cb;
4602 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4603 void (*cb) (int write_p, int version,
4604 int content_type, const void *buf,
4605 size_t len, SSL *ssl, void *arg))
4607 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4610 void SSL_set_msg_callback(SSL *ssl,
4611 void (*cb) (int write_p, int version,
4612 int content_type, const void *buf,
4613 size_t len, SSL *ssl, void *arg))
4615 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4618 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4619 int (*cb) (SSL *ssl,
4623 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4624 (void (*)(void))cb);
4627 void SSL_set_not_resumable_session_callback(SSL *ssl,
4628 int (*cb) (SSL *ssl,
4629 int is_forward_secure))
4631 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4632 (void (*)(void))cb);
4635 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4636 size_t (*cb) (SSL *ssl, int type,
4637 size_t len, void *arg))
4639 ctx->record_padding_cb = cb;
4642 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4644 ctx->record_padding_arg = arg;
4647 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4649 return ctx->record_padding_arg;
4652 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4654 /* block size of 0 or 1 is basically no padding */
4655 if (block_size == 1)
4656 ctx->block_padding = 0;
4657 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4658 ctx->block_padding = block_size;
4664 int SSL_set_record_padding_callback(SSL *ssl,
4665 size_t (*cb) (SSL *ssl, int type,
4666 size_t len, void *arg))
4670 b = SSL_get_wbio(ssl);
4671 if (b == NULL || !BIO_get_ktls_send(b)) {
4672 ssl->record_padding_cb = cb;
4678 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4680 ssl->record_padding_arg = arg;
4683 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4685 return ssl->record_padding_arg;
4688 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4690 /* block size of 0 or 1 is basically no padding */
4691 if (block_size == 1)
4692 ssl->block_padding = 0;
4693 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4694 ssl->block_padding = block_size;
4700 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4702 s->num_tickets = num_tickets;
4707 size_t SSL_get_num_tickets(const SSL *s)
4709 return s->num_tickets;
4712 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4714 ctx->num_tickets = num_tickets;
4719 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4721 return ctx->num_tickets;
4725 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4726 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4727 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4728 * Returns the newly allocated ctx;
4731 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4733 ssl_clear_hash_ctx(hash);
4734 *hash = EVP_MD_CTX_new();
4735 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4736 EVP_MD_CTX_free(*hash);
4743 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4746 EVP_MD_CTX_free(*hash);
4750 /* Retrieve handshake hashes */
4751 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4754 EVP_MD_CTX *ctx = NULL;
4755 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4756 int hashleni = EVP_MD_CTX_size(hdgst);
4759 if (hashleni < 0 || (size_t)hashleni > outlen) {
4760 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4761 ERR_R_INTERNAL_ERROR);
4765 ctx = EVP_MD_CTX_new();
4769 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4770 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4771 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4772 ERR_R_INTERNAL_ERROR);
4776 *hashlen = hashleni;
4780 EVP_MD_CTX_free(ctx);
4784 int SSL_session_reused(const SSL *s)
4789 int SSL_is_server(const SSL *s)
4794 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4795 void SSL_set_debug(SSL *s, int debug)
4797 /* Old function was do-nothing anyway... */
4803 void SSL_set_security_level(SSL *s, int level)
4805 s->cert->sec_level = level;
4808 int SSL_get_security_level(const SSL *s)
4810 return s->cert->sec_level;
4813 void SSL_set_security_callback(SSL *s,
4814 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4815 int op, int bits, int nid,
4816 void *other, void *ex))
4818 s->cert->sec_cb = cb;
4821 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4822 const SSL_CTX *ctx, int op,
4823 int bits, int nid, void *other,
4825 return s->cert->sec_cb;
4828 void SSL_set0_security_ex_data(SSL *s, void *ex)
4830 s->cert->sec_ex = ex;
4833 void *SSL_get0_security_ex_data(const SSL *s)
4835 return s->cert->sec_ex;
4838 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4840 ctx->cert->sec_level = level;
4843 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4845 return ctx->cert->sec_level;
4848 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4849 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4850 int op, int bits, int nid,
4851 void *other, void *ex))
4853 ctx->cert->sec_cb = cb;
4856 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4862 return ctx->cert->sec_cb;
4865 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4867 ctx->cert->sec_ex = ex;
4870 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4872 return ctx->cert->sec_ex;
4876 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4877 * can return unsigned long, instead of the generic long return value from the
4878 * control interface.
4880 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4882 return ctx->options;
4885 unsigned long SSL_get_options(const SSL *s)
4890 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4892 return ctx->options |= op;
4895 unsigned long SSL_set_options(SSL *s, unsigned long op)
4897 return s->options |= op;
4900 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4902 return ctx->options &= ~op;
4905 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4907 return s->options &= ~op;
4910 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4912 return s->verified_chain;
4915 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4917 #ifndef OPENSSL_NO_CT
4920 * Moves SCTs from the |src| stack to the |dst| stack.
4921 * The source of each SCT will be set to |origin|.
4922 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4924 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4926 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4927 sct_source_t origin)
4933 *dst = sk_SCT_new_null();
4935 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4940 while ((sct = sk_SCT_pop(src)) != NULL) {
4941 if (SCT_set_source(sct, origin) != 1)
4944 if (sk_SCT_push(*dst, sct) <= 0)
4952 sk_SCT_push(src, sct); /* Put the SCT back */
4957 * Look for data collected during ServerHello and parse if found.
4958 * Returns the number of SCTs extracted.
4960 static int ct_extract_tls_extension_scts(SSL *s)
4962 int scts_extracted = 0;
4964 if (s->ext.scts != NULL) {
4965 const unsigned char *p = s->ext.scts;
4966 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4968 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4970 SCT_LIST_free(scts);
4973 return scts_extracted;
4977 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4978 * contains an SCT X509 extension. They will be stored in |s->scts|.
4980 * - The number of SCTs extracted, assuming an OCSP response exists.
4981 * - 0 if no OCSP response exists or it contains no SCTs.
4982 * - A negative integer if an error occurs.
4984 static int ct_extract_ocsp_response_scts(SSL *s)
4986 # ifndef OPENSSL_NO_OCSP
4987 int scts_extracted = 0;
4988 const unsigned char *p;
4989 OCSP_BASICRESP *br = NULL;
4990 OCSP_RESPONSE *rsp = NULL;
4991 STACK_OF(SCT) *scts = NULL;
4994 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4997 p = s->ext.ocsp.resp;
4998 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5002 br = OCSP_response_get1_basic(rsp);
5006 for (i = 0; i < OCSP_resp_count(br); ++i) {
5007 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5013 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5015 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5016 if (scts_extracted < 0)
5020 SCT_LIST_free(scts);
5021 OCSP_BASICRESP_free(br);
5022 OCSP_RESPONSE_free(rsp);
5023 return scts_extracted;
5025 /* Behave as if no OCSP response exists */
5031 * Attempts to extract SCTs from the peer certificate.
5032 * Return the number of SCTs extracted, or a negative integer if an error
5035 static int ct_extract_x509v3_extension_scts(SSL *s)
5037 int scts_extracted = 0;
5038 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5041 STACK_OF(SCT) *scts =
5042 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5045 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5047 SCT_LIST_free(scts);
5050 return scts_extracted;
5054 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5055 * response (if it exists) and X509v3 extensions in the certificate.
5056 * Returns NULL if an error occurs.
5058 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5060 if (!s->scts_parsed) {
5061 if (ct_extract_tls_extension_scts(s) < 0 ||
5062 ct_extract_ocsp_response_scts(s) < 0 ||
5063 ct_extract_x509v3_extension_scts(s) < 0)
5073 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5074 const STACK_OF(SCT) *scts, void *unused_arg)
5079 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5080 const STACK_OF(SCT) *scts, void *unused_arg)
5082 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5085 for (i = 0; i < count; ++i) {
5086 SCT *sct = sk_SCT_value(scts, i);
5087 int status = SCT_get_validation_status(sct);
5089 if (status == SCT_VALIDATION_STATUS_VALID)
5092 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5096 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5100 * Since code exists that uses the custom extension handler for CT, look
5101 * for this and throw an error if they have already registered to use CT.
5103 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5104 TLSEXT_TYPE_signed_certificate_timestamp))
5106 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5107 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5111 if (callback != NULL) {
5113 * If we are validating CT, then we MUST accept SCTs served via OCSP
5115 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5119 s->ct_validation_callback = callback;
5120 s->ct_validation_callback_arg = arg;
5125 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5126 ssl_ct_validation_cb callback, void *arg)
5129 * Since code exists that uses the custom extension handler for CT, look for
5130 * this and throw an error if they have already registered to use CT.
5132 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5133 TLSEXT_TYPE_signed_certificate_timestamp))
5135 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5136 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5140 ctx->ct_validation_callback = callback;
5141 ctx->ct_validation_callback_arg = arg;
5145 int SSL_ct_is_enabled(const SSL *s)
5147 return s->ct_validation_callback != NULL;
5150 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5152 return ctx->ct_validation_callback != NULL;
5155 int ssl_validate_ct(SSL *s)
5158 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5160 SSL_DANE *dane = &s->dane;
5161 CT_POLICY_EVAL_CTX *ctx = NULL;
5162 const STACK_OF(SCT) *scts;
5165 * If no callback is set, the peer is anonymous, or its chain is invalid,
5166 * skip SCT validation - just return success. Applications that continue
5167 * handshakes without certificates, with unverified chains, or pinned leaf
5168 * certificates are outside the scope of the WebPKI and CT.
5170 * The above exclusions notwithstanding the vast majority of peers will
5171 * have rather ordinary certificate chains validated by typical
5172 * applications that perform certificate verification and therefore will
5173 * process SCTs when enabled.
5175 if (s->ct_validation_callback == NULL || cert == NULL ||
5176 s->verify_result != X509_V_OK ||
5177 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5181 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5182 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5184 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5185 switch (dane->mtlsa->usage) {
5186 case DANETLS_USAGE_DANE_TA:
5187 case DANETLS_USAGE_DANE_EE:
5192 ctx = CT_POLICY_EVAL_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
5194 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5195 ERR_R_MALLOC_FAILURE);
5199 issuer = sk_X509_value(s->verified_chain, 1);
5200 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5201 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5202 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5203 CT_POLICY_EVAL_CTX_set_time(
5204 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5206 scts = SSL_get0_peer_scts(s);
5209 * This function returns success (> 0) only when all the SCTs are valid, 0
5210 * when some are invalid, and < 0 on various internal errors (out of
5211 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5212 * reason to abort the handshake, that decision is up to the callback.
5213 * Therefore, we error out only in the unexpected case that the return
5214 * value is negative.
5216 * XXX: One might well argue that the return value of this function is an
5217 * unfortunate design choice. Its job is only to determine the validation
5218 * status of each of the provided SCTs. So long as it correctly separates
5219 * the wheat from the chaff it should return success. Failure in this case
5220 * ought to correspond to an inability to carry out its duties.
5222 if (SCT_LIST_validate(scts, ctx) < 0) {
5223 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5224 SSL_R_SCT_VERIFICATION_FAILED);
5228 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5230 ret = 0; /* This function returns 0 on failure */
5232 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5233 SSL_R_CALLBACK_FAILED);
5236 CT_POLICY_EVAL_CTX_free(ctx);
5238 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5239 * failure return code here. Also the application may wish the complete
5240 * the handshake, and then disconnect cleanly at a higher layer, after
5241 * checking the verification status of the completed connection.
5243 * We therefore force a certificate verification failure which will be
5244 * visible via SSL_get_verify_result() and cached as part of any resumed
5247 * Note: the permissive callback is for information gathering only, always
5248 * returns success, and does not affect verification status. Only the
5249 * strict callback or a custom application-specified callback can trigger
5250 * connection failure or record a verification error.
5253 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5257 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5259 switch (validation_mode) {
5261 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5263 case SSL_CT_VALIDATION_PERMISSIVE:
5264 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5265 case SSL_CT_VALIDATION_STRICT:
5266 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5270 int SSL_enable_ct(SSL *s, int validation_mode)
5272 switch (validation_mode) {
5274 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5276 case SSL_CT_VALIDATION_PERMISSIVE:
5277 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5278 case SSL_CT_VALIDATION_STRICT:
5279 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5283 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5285 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5288 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5290 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5293 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5295 CTLOG_STORE_free(ctx->ctlog_store);
5296 ctx->ctlog_store = logs;
5299 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5301 return ctx->ctlog_store;
5304 #endif /* OPENSSL_NO_CT */
5306 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5309 c->client_hello_cb = cb;
5310 c->client_hello_cb_arg = arg;
5313 int SSL_client_hello_isv2(SSL *s)
5315 if (s->clienthello == NULL)
5317 return s->clienthello->isv2;
5320 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5322 if (s->clienthello == NULL)
5324 return s->clienthello->legacy_version;
5327 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5329 if (s->clienthello == NULL)
5332 *out = s->clienthello->random;
5333 return SSL3_RANDOM_SIZE;
5336 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5338 if (s->clienthello == NULL)
5341 *out = s->clienthello->session_id;
5342 return s->clienthello->session_id_len;
5345 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5347 if (s->clienthello == NULL)
5350 *out = PACKET_data(&s->clienthello->ciphersuites);
5351 return PACKET_remaining(&s->clienthello->ciphersuites);
5354 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5356 if (s->clienthello == NULL)
5359 *out = s->clienthello->compressions;
5360 return s->clienthello->compressions_len;
5363 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5369 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5371 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5372 ext = s->clienthello->pre_proc_exts + i;
5381 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5382 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5383 ERR_R_MALLOC_FAILURE);
5386 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5387 ext = s->clienthello->pre_proc_exts + i;
5389 if (ext->received_order >= num)
5391 present[ext->received_order] = ext->type;
5398 OPENSSL_free(present);
5402 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5408 if (s->clienthello == NULL)
5410 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5411 r = s->clienthello->pre_proc_exts + i;
5412 if (r->present && r->type == type) {
5414 *out = PACKET_data(&r->data);
5416 *outlen = PACKET_remaining(&r->data);
5423 int SSL_free_buffers(SSL *ssl)
5425 RECORD_LAYER *rl = &ssl->rlayer;
5427 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5430 RECORD_LAYER_release(rl);
5434 int SSL_alloc_buffers(SSL *ssl)
5436 return ssl3_setup_buffers(ssl);
5439 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5441 ctx->keylog_callback = cb;
5444 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5446 return ctx->keylog_callback;
5449 static int nss_keylog_int(const char *prefix,
5451 const uint8_t *parameter_1,
5452 size_t parameter_1_len,
5453 const uint8_t *parameter_2,
5454 size_t parameter_2_len)
5457 char *cursor = NULL;
5462 if (ssl->ctx->keylog_callback == NULL)
5466 * Our output buffer will contain the following strings, rendered with
5467 * space characters in between, terminated by a NULL character: first the
5468 * prefix, then the first parameter, then the second parameter. The
5469 * meaning of each parameter depends on the specific key material being
5470 * logged. Note that the first and second parameters are encoded in
5471 * hexadecimal, so we need a buffer that is twice their lengths.
5473 prefix_len = strlen(prefix);
5474 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5475 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5476 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5477 ERR_R_MALLOC_FAILURE);
5481 strcpy(cursor, prefix);
5482 cursor += prefix_len;
5485 for (i = 0; i < parameter_1_len; i++) {
5486 sprintf(cursor, "%02x", parameter_1[i]);
5491 for (i = 0; i < parameter_2_len; i++) {
5492 sprintf(cursor, "%02x", parameter_2[i]);
5497 ssl->ctx->keylog_callback(ssl, (const char *)out);
5498 OPENSSL_clear_free(out, out_len);
5503 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5504 const uint8_t *encrypted_premaster,
5505 size_t encrypted_premaster_len,
5506 const uint8_t *premaster,
5507 size_t premaster_len)
5509 if (encrypted_premaster_len < 8) {
5510 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5511 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5515 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5516 return nss_keylog_int("RSA",
5518 encrypted_premaster,
5524 int ssl_log_secret(SSL *ssl,
5526 const uint8_t *secret,
5529 return nss_keylog_int(label,
5531 ssl->s3.client_random,
5537 #define SSLV2_CIPHER_LEN 3
5539 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5543 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5545 if (PACKET_remaining(cipher_suites) == 0) {
5546 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5547 SSL_R_NO_CIPHERS_SPECIFIED);
5551 if (PACKET_remaining(cipher_suites) % n != 0) {
5552 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5553 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5557 OPENSSL_free(s->s3.tmp.ciphers_raw);
5558 s->s3.tmp.ciphers_raw = NULL;
5559 s->s3.tmp.ciphers_rawlen = 0;
5562 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5563 PACKET sslv2ciphers = *cipher_suites;
5564 unsigned int leadbyte;
5568 * We store the raw ciphers list in SSLv3+ format so we need to do some
5569 * preprocessing to convert the list first. If there are any SSLv2 only
5570 * ciphersuites with a non-zero leading byte then we are going to
5571 * slightly over allocate because we won't store those. But that isn't a
5574 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5575 s->s3.tmp.ciphers_raw = raw;
5577 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5578 ERR_R_MALLOC_FAILURE);
5581 for (s->s3.tmp.ciphers_rawlen = 0;
5582 PACKET_remaining(&sslv2ciphers) > 0;
5583 raw += TLS_CIPHER_LEN) {
5584 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5586 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5589 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5590 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5592 OPENSSL_free(s->s3.tmp.ciphers_raw);
5593 s->s3.tmp.ciphers_raw = NULL;
5594 s->s3.tmp.ciphers_rawlen = 0;
5598 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5600 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5601 &s->s3.tmp.ciphers_rawlen)) {
5602 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5603 ERR_R_INTERNAL_ERROR);
5609 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5610 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5611 STACK_OF(SSL_CIPHER) **scsvs)
5615 if (!PACKET_buf_init(&pkt, bytes, len))
5617 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5620 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5621 STACK_OF(SSL_CIPHER) **skp,
5622 STACK_OF(SSL_CIPHER) **scsvs_out,
5623 int sslv2format, int fatal)
5625 const SSL_CIPHER *c;
5626 STACK_OF(SSL_CIPHER) *sk = NULL;
5627 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5629 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5630 unsigned char cipher[SSLV2_CIPHER_LEN];
5632 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5634 if (PACKET_remaining(cipher_suites) == 0) {
5636 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5637 SSL_R_NO_CIPHERS_SPECIFIED);
5639 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5643 if (PACKET_remaining(cipher_suites) % n != 0) {
5645 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5646 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5648 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5649 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5653 sk = sk_SSL_CIPHER_new_null();
5654 scsvs = sk_SSL_CIPHER_new_null();
5655 if (sk == NULL || scsvs == NULL) {
5657 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5658 ERR_R_MALLOC_FAILURE);
5660 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5664 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5666 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5667 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5668 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5670 if (sslv2format && cipher[0] != '\0')
5673 /* For SSLv2-compat, ignore leading 0-byte. */
5674 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5676 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5677 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5679 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5680 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5682 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5687 if (PACKET_remaining(cipher_suites) > 0) {
5689 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5692 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5699 sk_SSL_CIPHER_free(sk);
5700 if (scsvs_out != NULL)
5703 sk_SSL_CIPHER_free(scsvs);
5706 sk_SSL_CIPHER_free(sk);
5707 sk_SSL_CIPHER_free(scsvs);
5711 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5713 ctx->max_early_data = max_early_data;
5718 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5720 return ctx->max_early_data;
5723 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5725 s->max_early_data = max_early_data;
5730 uint32_t SSL_get_max_early_data(const SSL *s)
5732 return s->max_early_data;
5735 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5737 ctx->recv_max_early_data = recv_max_early_data;
5742 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5744 return ctx->recv_max_early_data;
5747 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5749 s->recv_max_early_data = recv_max_early_data;
5754 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5756 return s->recv_max_early_data;
5759 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5761 /* Return any active Max Fragment Len extension */
5762 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5763 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5765 /* return current SSL connection setting */
5766 return ssl->max_send_fragment;
5769 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5771 /* Return a value regarding an active Max Fragment Len extension */
5772 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5773 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5774 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5776 /* else limit |split_send_fragment| to current |max_send_fragment| */
5777 if (ssl->split_send_fragment > ssl->max_send_fragment)
5778 return ssl->max_send_fragment;
5780 /* return current SSL connection setting */
5781 return ssl->split_send_fragment;
5784 int SSL_stateless(SSL *s)
5788 /* Ensure there is no state left over from a previous invocation */
5794 s->s3.flags |= TLS1_FLAGS_STATELESS;
5795 ret = SSL_accept(s);
5796 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5798 if (ret > 0 && s->ext.cookieok)
5801 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5807 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5809 ctx->pha_enabled = val;
5812 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5814 ssl->pha_enabled = val;
5817 int SSL_verify_client_post_handshake(SSL *ssl)
5819 if (!SSL_IS_TLS13(ssl)) {
5820 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5824 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5828 if (!SSL_is_init_finished(ssl)) {
5829 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5833 switch (ssl->post_handshake_auth) {
5835 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5838 case SSL_PHA_EXT_SENT:
5839 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5841 case SSL_PHA_EXT_RECEIVED:
5843 case SSL_PHA_REQUEST_PENDING:
5844 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5846 case SSL_PHA_REQUESTED:
5847 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5851 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5853 /* checks verify_mode and algorithm_auth */
5854 if (!send_certificate_request(ssl)) {
5855 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5856 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5860 ossl_statem_set_in_init(ssl, 1);
5864 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5865 SSL_CTX_generate_session_ticket_fn gen_cb,
5866 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5869 ctx->generate_ticket_cb = gen_cb;
5870 ctx->decrypt_ticket_cb = dec_cb;
5871 ctx->ticket_cb_data = arg;
5875 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5876 SSL_allow_early_data_cb_fn cb,
5879 ctx->allow_early_data_cb = cb;
5880 ctx->allow_early_data_cb_data = arg;
5883 void SSL_set_allow_early_data_cb(SSL *s,
5884 SSL_allow_early_data_cb_fn cb,
5887 s->allow_early_data_cb = cb;
5888 s->allow_early_data_cb_data = arg;
5891 const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5893 const char *properties)
5897 #ifndef OPENSSL_NO_ENGINE
5901 * If there is an Engine available for this cipher we use the "implicit"
5902 * form to ensure we use that engine later.
5904 eng = ENGINE_get_cipher_engine(nid);
5907 return EVP_get_cipherbynid(nid);
5911 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5913 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5919 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5921 /* Don't up-ref an implicit EVP_CIPHER */
5922 if (EVP_CIPHER_provider(cipher) == NULL)
5926 * The cipher was explicitly fetched and therefore it is safe to cast
5929 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5932 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5937 if (EVP_CIPHER_provider(cipher) != NULL) {
5939 * The cipher was explicitly fetched and therefore it is safe to cast
5942 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5946 const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5948 const char *properties)
5952 #ifndef OPENSSL_NO_ENGINE
5956 * If there is an Engine available for this digest we use the "implicit"
5957 * form to ensure we use that engine later.
5959 eng = ENGINE_get_digest_engine(nid);
5962 return EVP_get_digestbynid(nid);
5966 /* Otherwise we do an explicit fetch */
5968 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5973 int ssl_evp_md_up_ref(const EVP_MD *md)
5975 /* Don't up-ref an implicit EVP_MD */
5976 if (EVP_MD_provider(md) == NULL)
5980 * The digest was explicitly fetched and therefore it is safe to cast
5983 return EVP_MD_up_ref((EVP_MD *)md);
5986 void ssl_evp_md_free(const EVP_MD *md)
5991 if (EVP_MD_provider(md) != NULL) {
5993 * The digest was explicitly fetched and therefore it is safe to cast
5996 EVP_MD_free((EVP_MD *)md);