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"
31 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
32 SSL_MAC_BUF *mac, size_t macsize)
34 return ssl_undefined_function(ssl);
37 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
40 return ssl_undefined_function(ssl);
43 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
44 unsigned char *s, size_t t, size_t *u)
46 return ssl_undefined_function(ssl);
49 static int ssl_undefined_function_4(SSL *ssl, int r)
51 return ssl_undefined_function(ssl);
54 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
57 return ssl_undefined_function(ssl);
60 static int ssl_undefined_function_6(int r)
62 return ssl_undefined_function(NULL);
65 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
66 const char *t, size_t u,
67 const unsigned char *v, size_t w, int x)
69 return ssl_undefined_function(ssl);
72 SSL3_ENC_METHOD ssl3_undef_enc_method = {
73 ssl_undefined_function_1,
74 ssl_undefined_function_2,
75 ssl_undefined_function,
76 ssl_undefined_function_3,
77 ssl_undefined_function_4,
78 ssl_undefined_function_5,
79 NULL, /* client_finished_label */
80 0, /* client_finished_label_len */
81 NULL, /* server_finished_label */
82 0, /* server_finished_label_len */
83 ssl_undefined_function_6,
84 ssl_undefined_function_7,
87 struct ssl_async_args {
91 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
93 int (*func_read) (SSL *, void *, size_t, size_t *);
94 int (*func_write) (SSL *, const void *, size_t, size_t *);
95 int (*func_other) (SSL *);
105 DANETLS_MATCHING_FULL, 0, NID_undef
108 DANETLS_MATCHING_2256, 1, NID_sha256
111 DANETLS_MATCHING_2512, 2, NID_sha512
115 static int dane_ctx_enable(struct dane_ctx_st *dctx)
117 const EVP_MD **mdevp;
119 uint8_t mdmax = DANETLS_MATCHING_LAST;
120 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
123 if (dctx->mdevp != NULL)
126 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
127 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
129 if (mdord == NULL || mdevp == NULL) {
132 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
136 /* Install default entries */
137 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
140 if (dane_mds[i].nid == NID_undef ||
141 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
143 mdevp[dane_mds[i].mtype] = md;
144 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
154 static void dane_ctx_final(struct dane_ctx_st *dctx)
156 OPENSSL_free(dctx->mdevp);
159 OPENSSL_free(dctx->mdord);
164 static void tlsa_free(danetls_record *t)
168 OPENSSL_free(t->data);
169 EVP_PKEY_free(t->spki);
173 static void dane_final(SSL_DANE *dane)
175 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
178 sk_X509_pop_free(dane->certs, X509_free);
181 X509_free(dane->mcert);
189 * dane_copy - Copy dane configuration, sans verification state.
191 static int ssl_dane_dup(SSL *to, SSL *from)
196 if (!DANETLS_ENABLED(&from->dane))
199 num = sk_danetls_record_num(from->dane.trecs);
200 dane_final(&to->dane);
201 to->dane.flags = from->dane.flags;
202 to->dane.dctx = &to->ctx->dane;
203 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
205 if (to->dane.trecs == NULL) {
206 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
210 for (i = 0; i < num; ++i) {
211 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
213 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
214 t->data, t->dlen) <= 0)
220 static int dane_mtype_set(struct dane_ctx_st *dctx,
221 const EVP_MD *md, uint8_t mtype, uint8_t ord)
225 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
226 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
230 if (mtype > dctx->mdmax) {
231 const EVP_MD **mdevp;
233 int n = ((int)mtype) + 1;
235 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
237 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
242 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
244 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
249 /* Zero-fill any gaps */
250 for (i = dctx->mdmax + 1; i < mtype; ++i) {
258 dctx->mdevp[mtype] = md;
259 /* Coerce ordinal of disabled matching types to 0 */
260 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
265 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
267 if (mtype > dane->dctx->mdmax)
269 return dane->dctx->mdevp[mtype];
272 static int dane_tlsa_add(SSL_DANE *dane,
275 uint8_t mtype, unsigned const char *data, size_t dlen)
278 const EVP_MD *md = NULL;
279 int ilen = (int)dlen;
283 if (dane->trecs == NULL) {
284 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
288 if (ilen < 0 || dlen != (size_t)ilen) {
289 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
293 if (usage > DANETLS_USAGE_LAST) {
294 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
298 if (selector > DANETLS_SELECTOR_LAST) {
299 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
303 if (mtype != DANETLS_MATCHING_FULL) {
304 md = tlsa_md_get(dane, mtype);
306 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
311 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
312 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
316 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
320 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
321 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
326 t->selector = selector;
328 t->data = OPENSSL_malloc(dlen);
329 if (t->data == NULL) {
331 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
334 memcpy(t->data, data, dlen);
337 /* Validate and cache full certificate or public key */
338 if (mtype == DANETLS_MATCHING_FULL) {
339 const unsigned char *p = data;
341 EVP_PKEY *pkey = NULL;
344 case DANETLS_SELECTOR_CERT:
345 if (!d2i_X509(&cert, &p, ilen) || p < data ||
346 dlen != (size_t)(p - data)) {
348 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
351 if (X509_get0_pubkey(cert) == NULL) {
353 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
357 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
363 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
364 * records that contain full certificates of trust-anchors that are
365 * not present in the wire chain. For usage PKIX-TA(0), we augment
366 * the chain with untrusted Full(0) certificates from DNS, in case
367 * they are missing from the chain.
369 if ((dane->certs == NULL &&
370 (dane->certs = sk_X509_new_null()) == NULL) ||
371 !sk_X509_push(dane->certs, cert)) {
372 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
379 case DANETLS_SELECTOR_SPKI:
380 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
381 dlen != (size_t)(p - data)) {
383 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
388 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
389 * records that contain full bare keys of trust-anchors that are
390 * not present in the wire chain.
392 if (usage == DANETLS_USAGE_DANE_TA)
401 * Find the right insertion point for the new record.
403 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
404 * they can be processed first, as they require no chain building, and no
405 * expiration or hostname checks. Because DANE-EE(3) is numerically
406 * largest, this is accomplished via descending sort by "usage".
408 * We also sort in descending order by matching ordinal to simplify
409 * the implementation of digest agility in the verification code.
411 * The choice of order for the selector is not significant, so we
412 * use the same descending order for consistency.
414 num = sk_danetls_record_num(dane->trecs);
415 for (i = 0; i < num; ++i) {
416 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
418 if (rec->usage > usage)
420 if (rec->usage < usage)
422 if (rec->selector > selector)
424 if (rec->selector < selector)
426 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
431 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
433 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
436 dane->umask |= DANETLS_USAGE_BIT(usage);
442 * Return 0 if there is only one version configured and it was disabled
443 * at configure time. Return 1 otherwise.
445 static int ssl_check_allowed_versions(int min_version, int max_version)
447 int minisdtls = 0, maxisdtls = 0;
449 /* Figure out if we're doing DTLS versions or TLS versions */
450 if (min_version == DTLS1_BAD_VER
451 || min_version >> 8 == DTLS1_VERSION_MAJOR)
453 if (max_version == DTLS1_BAD_VER
454 || max_version >> 8 == DTLS1_VERSION_MAJOR)
456 /* A wildcard version of 0 could be DTLS or TLS. */
457 if ((minisdtls && !maxisdtls && max_version != 0)
458 || (maxisdtls && !minisdtls && min_version != 0)) {
459 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
463 if (minisdtls || maxisdtls) {
464 /* Do DTLS version checks. */
465 if (min_version == 0)
466 /* Ignore DTLS1_BAD_VER */
467 min_version = DTLS1_VERSION;
468 if (max_version == 0)
469 max_version = DTLS1_2_VERSION;
470 #ifdef OPENSSL_NO_DTLS1_2
471 if (max_version == DTLS1_2_VERSION)
472 max_version = DTLS1_VERSION;
474 #ifdef OPENSSL_NO_DTLS1
475 if (min_version == DTLS1_VERSION)
476 min_version = DTLS1_2_VERSION;
478 /* Done massaging versions; do the check. */
480 #ifdef OPENSSL_NO_DTLS1
481 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
482 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
484 #ifdef OPENSSL_NO_DTLS1_2
485 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
486 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
491 /* Regular TLS version checks. */
492 if (min_version == 0)
493 min_version = SSL3_VERSION;
494 if (max_version == 0)
495 max_version = TLS1_3_VERSION;
496 #ifdef OPENSSL_NO_TLS1_3
497 if (max_version == TLS1_3_VERSION)
498 max_version = TLS1_2_VERSION;
500 #ifdef OPENSSL_NO_TLS1_2
501 if (max_version == TLS1_2_VERSION)
502 max_version = TLS1_1_VERSION;
504 #ifdef OPENSSL_NO_TLS1_1
505 if (max_version == TLS1_1_VERSION)
506 max_version = TLS1_VERSION;
508 #ifdef OPENSSL_NO_TLS1
509 if (max_version == TLS1_VERSION)
510 max_version = SSL3_VERSION;
512 #ifdef OPENSSL_NO_SSL3
513 if (min_version == SSL3_VERSION)
514 min_version = TLS1_VERSION;
516 #ifdef OPENSSL_NO_TLS1
517 if (min_version == TLS1_VERSION)
518 min_version = TLS1_1_VERSION;
520 #ifdef OPENSSL_NO_TLS1_1
521 if (min_version == TLS1_1_VERSION)
522 min_version = TLS1_2_VERSION;
524 #ifdef OPENSSL_NO_TLS1_2
525 if (min_version == TLS1_2_VERSION)
526 min_version = TLS1_3_VERSION;
528 /* Done massaging versions; do the check. */
530 #ifdef OPENSSL_NO_SSL3
531 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
533 #ifdef OPENSSL_NO_TLS1
534 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
536 #ifdef OPENSSL_NO_TLS1_1
537 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
539 #ifdef OPENSSL_NO_TLS1_2
540 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
542 #ifdef OPENSSL_NO_TLS1_3
543 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
551 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
553 * Define a VPROC function for HP NonStop build ssl library.
554 * This is used by platform version identification tools.
555 * Do not inline this procedure or make it static.
557 # define OPENSSL_VPROC_STRING_(x) x##_SSL
558 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
559 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
560 void OPENSSL_VPROC_FUNC(void) {}
564 static void clear_ciphers(SSL *s)
566 /* clear the current cipher */
567 ssl_clear_cipher_ctx(s);
568 ssl_clear_hash_ctx(&s->read_hash);
569 ssl_clear_hash_ctx(&s->write_hash);
572 int SSL_clear(SSL *s)
574 if (s->method == NULL) {
575 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
579 if (ssl_clear_bad_session(s)) {
580 SSL_SESSION_free(s->session);
583 SSL_SESSION_free(s->psksession);
584 s->psksession = NULL;
585 OPENSSL_free(s->psksession_id);
586 s->psksession_id = NULL;
587 s->psksession_id_len = 0;
588 s->hello_retry_request = 0;
595 if (s->renegotiate) {
596 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
600 ossl_statem_clear(s);
602 s->version = s->method->version;
603 s->client_version = s->version;
604 s->rwstate = SSL_NOTHING;
606 BUF_MEM_free(s->init_buf);
611 s->key_update = SSL_KEY_UPDATE_NONE;
613 EVP_MD_CTX_free(s->pha_dgst);
616 /* Reset DANE verification result state */
619 X509_free(s->dane.mcert);
620 s->dane.mcert = NULL;
621 s->dane.mtlsa = NULL;
623 /* Clear the verification result peername */
624 X509_VERIFY_PARAM_move_peername(s->param, NULL);
626 /* Clear any shared connection state */
627 OPENSSL_free(s->shared_sigalgs);
628 s->shared_sigalgs = NULL;
629 s->shared_sigalgslen = 0;
632 * Check to see if we were changed into a different method, if so, revert
635 if (s->method != s->ctx->method) {
636 s->method->ssl_free(s);
637 s->method = s->ctx->method;
638 if (!s->method->ssl_new(s))
641 if (!s->method->ssl_clear(s))
645 RECORD_LAYER_clear(&s->rlayer);
650 #ifndef OPENSSL_NO_DEPRECATED_3_0
651 /** Used to change an SSL_CTXs default SSL method type */
652 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
654 STACK_OF(SSL_CIPHER) *sk;
658 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
659 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
662 sk = ssl_create_cipher_list(ctx->method,
663 ctx->tls13_ciphersuites,
665 &(ctx->cipher_list_by_id),
666 OSSL_default_cipher_list(), ctx->cert);
667 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
668 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
675 SSL *SSL_new(SSL_CTX *ctx)
680 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
683 if (ctx->method == NULL) {
684 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
688 s = OPENSSL_zalloc(sizeof(*s));
693 s->lock = CRYPTO_THREAD_lock_new();
694 if (s->lock == NULL) {
700 RECORD_LAYER_init(&s->rlayer, s);
702 s->options = ctx->options;
703 s->dane.flags = ctx->dane.flags;
704 s->min_proto_version = ctx->min_proto_version;
705 s->max_proto_version = ctx->max_proto_version;
707 s->max_cert_list = ctx->max_cert_list;
708 s->max_early_data = ctx->max_early_data;
709 s->recv_max_early_data = ctx->recv_max_early_data;
710 s->num_tickets = ctx->num_tickets;
711 s->pha_enabled = ctx->pha_enabled;
713 /* Shallow copy of the ciphersuites stack */
714 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
715 if (s->tls13_ciphersuites == NULL)
719 * Earlier library versions used to copy the pointer to the CERT, not
720 * its contents; only when setting new parameters for the per-SSL
721 * copy, ssl_cert_new would be called (and the direct reference to
722 * the per-SSL_CTX settings would be lost, but those still were
723 * indirectly accessed for various purposes, and for that reason they
724 * used to be known as s->ctx->default_cert). Now we don't look at the
725 * SSL_CTX's CERT after having duplicated it once.
727 s->cert = ssl_cert_dup(ctx->cert);
731 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
732 s->msg_callback = ctx->msg_callback;
733 s->msg_callback_arg = ctx->msg_callback_arg;
734 s->verify_mode = ctx->verify_mode;
735 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
736 s->record_padding_cb = ctx->record_padding_cb;
737 s->record_padding_arg = ctx->record_padding_arg;
738 s->block_padding = ctx->block_padding;
739 s->sid_ctx_length = ctx->sid_ctx_length;
740 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
742 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
743 s->verify_callback = ctx->default_verify_callback;
744 s->generate_session_id = ctx->generate_session_id;
746 s->param = X509_VERIFY_PARAM_new();
747 if (s->param == NULL)
749 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
750 s->quiet_shutdown = ctx->quiet_shutdown;
752 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
753 s->max_send_fragment = ctx->max_send_fragment;
754 s->split_send_fragment = ctx->split_send_fragment;
755 s->max_pipelines = ctx->max_pipelines;
756 if (s->max_pipelines > 1)
757 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
758 if (ctx->default_read_buf_len > 0)
759 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
764 s->ext.debug_arg = NULL;
765 s->ext.ticket_expected = 0;
766 s->ext.status_type = ctx->ext.status_type;
767 s->ext.status_expected = 0;
768 s->ext.ocsp.ids = NULL;
769 s->ext.ocsp.exts = NULL;
770 s->ext.ocsp.resp = NULL;
771 s->ext.ocsp.resp_len = 0;
773 s->session_ctx = ctx;
774 #ifndef OPENSSL_NO_EC
775 if (ctx->ext.ecpointformats) {
776 s->ext.ecpointformats =
777 OPENSSL_memdup(ctx->ext.ecpointformats,
778 ctx->ext.ecpointformats_len);
779 if (!s->ext.ecpointformats)
781 s->ext.ecpointformats_len =
782 ctx->ext.ecpointformats_len;
785 if (ctx->ext.supportedgroups) {
786 s->ext.supportedgroups =
787 OPENSSL_memdup(ctx->ext.supportedgroups,
788 ctx->ext.supportedgroups_len
789 * sizeof(*ctx->ext.supportedgroups));
790 if (!s->ext.supportedgroups)
792 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
795 #ifndef OPENSSL_NO_NEXTPROTONEG
799 if (s->ctx->ext.alpn) {
800 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
801 if (s->ext.alpn == NULL)
803 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
804 s->ext.alpn_len = s->ctx->ext.alpn_len;
807 s->verified_chain = NULL;
808 s->verify_result = X509_V_OK;
810 s->default_passwd_callback = ctx->default_passwd_callback;
811 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
813 s->method = ctx->method;
815 s->key_update = SSL_KEY_UPDATE_NONE;
817 s->allow_early_data_cb = ctx->allow_early_data_cb;
818 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
820 if (!s->method->ssl_new(s))
823 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
828 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
831 #ifndef OPENSSL_NO_PSK
832 s->psk_client_callback = ctx->psk_client_callback;
833 s->psk_server_callback = ctx->psk_server_callback;
835 s->psk_find_session_cb = ctx->psk_find_session_cb;
836 s->psk_use_session_cb = ctx->psk_use_session_cb;
838 s->async_cb = ctx->async_cb;
839 s->async_cb_arg = ctx->async_cb_arg;
843 #ifndef OPENSSL_NO_CT
844 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
845 ctx->ct_validation_callback_arg))
852 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
856 int SSL_is_dtls(const SSL *s)
858 return SSL_IS_DTLS(s) ? 1 : 0;
861 int SSL_up_ref(SSL *s)
865 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
868 REF_PRINT_COUNT("SSL", s);
869 REF_ASSERT_ISNT(i < 2);
870 return ((i > 1) ? 1 : 0);
873 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
874 unsigned int sid_ctx_len)
876 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
877 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
878 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
881 ctx->sid_ctx_length = sid_ctx_len;
882 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
887 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
888 unsigned int sid_ctx_len)
890 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
891 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
892 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
895 ssl->sid_ctx_length = sid_ctx_len;
896 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
901 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
903 CRYPTO_THREAD_write_lock(ctx->lock);
904 ctx->generate_session_id = cb;
905 CRYPTO_THREAD_unlock(ctx->lock);
909 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
911 CRYPTO_THREAD_write_lock(ssl->lock);
912 ssl->generate_session_id = cb;
913 CRYPTO_THREAD_unlock(ssl->lock);
917 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
921 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
922 * we can "construct" a session to give us the desired check - i.e. to
923 * find if there's a session in the hash table that would conflict with
924 * any new session built out of this id/id_len and the ssl_version in use
929 if (id_len > sizeof(r.session_id))
932 r.ssl_version = ssl->version;
933 r.session_id_length = id_len;
934 memcpy(r.session_id, id, id_len);
936 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
937 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
938 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
942 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
944 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
947 int SSL_set_purpose(SSL *s, int purpose)
949 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
952 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
954 return X509_VERIFY_PARAM_set_trust(s->param, trust);
957 int SSL_set_trust(SSL *s, int trust)
959 return X509_VERIFY_PARAM_set_trust(s->param, trust);
962 int SSL_set1_host(SSL *s, const char *hostname)
964 /* If a hostname is provided and parses as an IP address,
965 * treat it as such. */
966 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
969 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
972 int SSL_add1_host(SSL *s, const char *hostname)
974 /* If a hostname is provided and parses as an IP address,
975 * treat it as such. */
978 ASN1_OCTET_STRING *ip;
981 ip = a2i_IPADDRESS(hostname);
983 /* We didn't want it; only to check if it *is* an IP address */
984 ASN1_OCTET_STRING_free(ip);
986 old_ip = X509_VERIFY_PARAM_get1_ip_asc(s->param);
989 OPENSSL_free(old_ip);
990 /* There can be only one IP address */
994 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
998 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
1001 void SSL_set_hostflags(SSL *s, unsigned int flags)
1003 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
1006 const char *SSL_get0_peername(SSL *s)
1008 return X509_VERIFY_PARAM_get0_peername(s->param);
1011 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1013 return dane_ctx_enable(&ctx->dane);
1016 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1018 unsigned long orig = ctx->dane.flags;
1020 ctx->dane.flags |= flags;
1024 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1026 unsigned long orig = ctx->dane.flags;
1028 ctx->dane.flags &= ~flags;
1032 int SSL_dane_enable(SSL *s, const char *basedomain)
1034 SSL_DANE *dane = &s->dane;
1036 if (s->ctx->dane.mdmax == 0) {
1037 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1040 if (dane->trecs != NULL) {
1041 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1046 * Default SNI name. This rejects empty names, while set1_host below
1047 * accepts them and disables host name checks. To avoid side-effects with
1048 * invalid input, set the SNI name first.
1050 if (s->ext.hostname == NULL) {
1051 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1052 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1057 /* Primary RFC6125 reference identifier */
1058 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1059 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1065 dane->dctx = &s->ctx->dane;
1066 dane->trecs = sk_danetls_record_new_null();
1068 if (dane->trecs == NULL) {
1069 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1075 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1077 unsigned long orig = ssl->dane.flags;
1079 ssl->dane.flags |= flags;
1083 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1085 unsigned long orig = ssl->dane.flags;
1087 ssl->dane.flags &= ~flags;
1091 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1093 SSL_DANE *dane = &s->dane;
1095 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1099 *mcert = dane->mcert;
1101 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1106 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1107 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1109 SSL_DANE *dane = &s->dane;
1111 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1115 *usage = dane->mtlsa->usage;
1117 *selector = dane->mtlsa->selector;
1119 *mtype = dane->mtlsa->mtype;
1121 *data = dane->mtlsa->data;
1123 *dlen = dane->mtlsa->dlen;
1128 SSL_DANE *SSL_get0_dane(SSL *s)
1133 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1134 uint8_t mtype, unsigned const char *data, size_t dlen)
1136 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1139 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1142 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1145 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1147 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1150 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1152 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1155 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1160 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1165 void SSL_certs_clear(SSL *s)
1167 ssl_cert_clear_certs(s->cert);
1170 void SSL_free(SSL *s)
1176 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1177 REF_PRINT_COUNT("SSL", s);
1180 REF_ASSERT_ISNT(i < 0);
1182 X509_VERIFY_PARAM_free(s->param);
1183 dane_final(&s->dane);
1184 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1186 RECORD_LAYER_release(&s->rlayer);
1188 /* Ignore return value */
1189 ssl_free_wbio_buffer(s);
1191 BIO_free_all(s->wbio);
1193 BIO_free_all(s->rbio);
1196 BUF_MEM_free(s->init_buf);
1198 /* add extra stuff */
1199 sk_SSL_CIPHER_free(s->cipher_list);
1200 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1201 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1202 sk_SSL_CIPHER_free(s->peer_ciphers);
1204 /* Make the next call work :-) */
1205 if (s->session != NULL) {
1206 ssl_clear_bad_session(s);
1207 SSL_SESSION_free(s->session);
1209 SSL_SESSION_free(s->psksession);
1210 OPENSSL_free(s->psksession_id);
1214 ssl_cert_free(s->cert);
1215 OPENSSL_free(s->shared_sigalgs);
1216 /* Free up if allocated */
1218 OPENSSL_free(s->ext.hostname);
1219 SSL_CTX_free(s->session_ctx);
1220 #ifndef OPENSSL_NO_EC
1221 OPENSSL_free(s->ext.ecpointformats);
1222 OPENSSL_free(s->ext.peer_ecpointformats);
1223 #endif /* OPENSSL_NO_EC */
1224 OPENSSL_free(s->ext.supportedgroups);
1225 OPENSSL_free(s->ext.peer_supportedgroups);
1226 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1227 #ifndef OPENSSL_NO_OCSP
1228 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1230 #ifndef OPENSSL_NO_CT
1231 SCT_LIST_free(s->scts);
1232 OPENSSL_free(s->ext.scts);
1234 OPENSSL_free(s->ext.ocsp.resp);
1235 OPENSSL_free(s->ext.alpn);
1236 OPENSSL_free(s->ext.tls13_cookie);
1237 if (s->clienthello != NULL)
1238 OPENSSL_free(s->clienthello->pre_proc_exts);
1239 OPENSSL_free(s->clienthello);
1240 OPENSSL_free(s->pha_context);
1241 EVP_MD_CTX_free(s->pha_dgst);
1243 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1244 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1246 sk_X509_pop_free(s->verified_chain, X509_free);
1248 if (s->method != NULL)
1249 s->method->ssl_free(s);
1251 SSL_CTX_free(s->ctx);
1253 ASYNC_WAIT_CTX_free(s->waitctx);
1255 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1256 OPENSSL_free(s->ext.npn);
1259 #ifndef OPENSSL_NO_SRTP
1260 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1263 CRYPTO_THREAD_lock_free(s->lock);
1268 void SSL_set0_rbio(SSL *s, BIO *rbio)
1270 BIO_free_all(s->rbio);
1274 void SSL_set0_wbio(SSL *s, BIO *wbio)
1277 * If the output buffering BIO is still in place, remove it
1279 if (s->bbio != NULL)
1280 s->wbio = BIO_pop(s->wbio);
1282 BIO_free_all(s->wbio);
1285 /* Re-attach |bbio| to the new |wbio|. */
1286 if (s->bbio != NULL)
1287 s->wbio = BIO_push(s->bbio, s->wbio);
1290 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1293 * For historical reasons, this function has many different cases in
1294 * ownership handling.
1297 /* If nothing has changed, do nothing */
1298 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1302 * If the two arguments are equal then one fewer reference is granted by the
1303 * caller than we want to take
1305 if (rbio != NULL && rbio == wbio)
1309 * If only the wbio is changed only adopt one reference.
1311 if (rbio == SSL_get_rbio(s)) {
1312 SSL_set0_wbio(s, wbio);
1316 * There is an asymmetry here for historical reasons. If only the rbio is
1317 * changed AND the rbio and wbio were originally different, then we only
1318 * adopt one reference.
1320 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1321 SSL_set0_rbio(s, rbio);
1325 /* Otherwise, adopt both references. */
1326 SSL_set0_rbio(s, rbio);
1327 SSL_set0_wbio(s, wbio);
1330 BIO *SSL_get_rbio(const SSL *s)
1335 BIO *SSL_get_wbio(const SSL *s)
1337 if (s->bbio != NULL) {
1339 * If |bbio| is active, the true caller-configured BIO is its
1342 return BIO_next(s->bbio);
1347 int SSL_get_fd(const SSL *s)
1349 return SSL_get_rfd(s);
1352 int SSL_get_rfd(const SSL *s)
1357 b = SSL_get_rbio(s);
1358 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1360 BIO_get_fd(r, &ret);
1364 int SSL_get_wfd(const SSL *s)
1369 b = SSL_get_wbio(s);
1370 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1372 BIO_get_fd(r, &ret);
1376 #ifndef OPENSSL_NO_SOCK
1377 int SSL_set_fd(SSL *s, int fd)
1382 bio = BIO_new(BIO_s_socket());
1385 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1388 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1389 SSL_set_bio(s, bio, bio);
1390 #ifndef OPENSSL_NO_KTLS
1392 * The new socket is created successfully regardless of ktls_enable.
1393 * ktls_enable doesn't change any functionality of the socket, except
1394 * changing the setsockopt to enable the processing of ktls_start.
1395 * Thus, it is not a problem to call it for non-TLS sockets.
1398 #endif /* OPENSSL_NO_KTLS */
1404 int SSL_set_wfd(SSL *s, int fd)
1406 BIO *rbio = SSL_get_rbio(s);
1408 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1409 || (int)BIO_get_fd(rbio, NULL) != fd) {
1410 BIO *bio = BIO_new(BIO_s_socket());
1413 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1416 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1417 SSL_set0_wbio(s, bio);
1418 #ifndef OPENSSL_NO_KTLS
1420 * The new socket is created successfully regardless of ktls_enable.
1421 * ktls_enable doesn't change any functionality of the socket, except
1422 * changing the setsockopt to enable the processing of ktls_start.
1423 * Thus, it is not a problem to call it for non-TLS sockets.
1426 #endif /* OPENSSL_NO_KTLS */
1429 SSL_set0_wbio(s, rbio);
1434 int SSL_set_rfd(SSL *s, int fd)
1436 BIO *wbio = SSL_get_wbio(s);
1438 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1439 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1440 BIO *bio = BIO_new(BIO_s_socket());
1443 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1446 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1447 SSL_set0_rbio(s, bio);
1450 SSL_set0_rbio(s, wbio);
1457 /* return length of latest Finished message we sent, copy to 'buf' */
1458 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1462 ret = s->s3.tmp.finish_md_len;
1465 memcpy(buf, s->s3.tmp.finish_md, count);
1469 /* return length of latest Finished message we expected, copy to 'buf' */
1470 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1474 ret = s->s3.tmp.peer_finish_md_len;
1477 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1481 int SSL_get_verify_mode(const SSL *s)
1483 return s->verify_mode;
1486 int SSL_get_verify_depth(const SSL *s)
1488 return X509_VERIFY_PARAM_get_depth(s->param);
1491 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1492 return s->verify_callback;
1495 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1497 return ctx->verify_mode;
1500 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1502 return X509_VERIFY_PARAM_get_depth(ctx->param);
1505 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1506 return ctx->default_verify_callback;
1509 void SSL_set_verify(SSL *s, int mode,
1510 int (*callback) (int ok, X509_STORE_CTX *ctx))
1512 s->verify_mode = mode;
1513 if (callback != NULL)
1514 s->verify_callback = callback;
1517 void SSL_set_verify_depth(SSL *s, int depth)
1519 X509_VERIFY_PARAM_set_depth(s->param, depth);
1522 void SSL_set_read_ahead(SSL *s, int yes)
1524 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1527 int SSL_get_read_ahead(const SSL *s)
1529 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1532 int SSL_pending(const SSL *s)
1534 size_t pending = s->method->ssl_pending(s);
1537 * SSL_pending cannot work properly if read-ahead is enabled
1538 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1539 * impossible to fix since SSL_pending cannot report errors that may be
1540 * observed while scanning the new data. (Note that SSL_pending() is
1541 * often used as a boolean value, so we'd better not return -1.)
1543 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1544 * we just return INT_MAX.
1546 return pending < INT_MAX ? (int)pending : INT_MAX;
1549 int SSL_has_pending(const SSL *s)
1552 * Similar to SSL_pending() but returns a 1 to indicate that we have
1553 * unprocessed data available or 0 otherwise (as opposed to the number of
1554 * bytes available). Unlike SSL_pending() this will take into account
1555 * read_ahead data. A 1 return simply indicates that we have unprocessed
1556 * data. That data may not result in any application data, or we may fail
1557 * to parse the records for some reason.
1559 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1562 return RECORD_LAYER_read_pending(&s->rlayer);
1565 X509 *SSL_get1_peer_certificate(const SSL *s)
1567 X509 *r = SSL_get0_peer_certificate(s);
1575 X509 *SSL_get0_peer_certificate(const SSL *s)
1577 if ((s == NULL) || (s->session == NULL))
1580 return s->session->peer;
1583 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1587 if ((s == NULL) || (s->session == NULL))
1590 r = s->session->peer_chain;
1593 * If we are a client, cert_chain includes the peer's own certificate; if
1594 * we are a server, it does not.
1601 * Now in theory, since the calling process own 't' it should be safe to
1602 * modify. We need to be able to read f without being hassled
1604 int SSL_copy_session_id(SSL *t, const SSL *f)
1607 /* Do we need to to SSL locking? */
1608 if (!SSL_set_session(t, SSL_get_session(f))) {
1613 * what if we are setup for one protocol version but want to talk another
1615 if (t->method != f->method) {
1616 t->method->ssl_free(t);
1617 t->method = f->method;
1618 if (t->method->ssl_new(t) == 0)
1622 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1623 ssl_cert_free(t->cert);
1625 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1632 /* Fix this so it checks all the valid key/cert options */
1633 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1635 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1636 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1639 if (ctx->cert->key->privatekey == NULL) {
1640 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1643 return X509_check_private_key
1644 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1647 /* Fix this function so that it takes an optional type parameter */
1648 int SSL_check_private_key(const SSL *ssl)
1651 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1654 if (ssl->cert->key->x509 == NULL) {
1655 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1658 if (ssl->cert->key->privatekey == NULL) {
1659 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1662 return X509_check_private_key(ssl->cert->key->x509,
1663 ssl->cert->key->privatekey);
1666 int SSL_waiting_for_async(SSL *s)
1674 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1676 ASYNC_WAIT_CTX *ctx = s->waitctx;
1680 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1683 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1684 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1686 ASYNC_WAIT_CTX *ctx = s->waitctx;
1690 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1694 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1696 ctx->async_cb = callback;
1700 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1702 ctx->async_cb_arg = arg;
1706 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1708 s->async_cb = callback;
1712 int SSL_set_async_callback_arg(SSL *s, void *arg)
1714 s->async_cb_arg = arg;
1718 int SSL_get_async_status(SSL *s, int *status)
1720 ASYNC_WAIT_CTX *ctx = s->waitctx;
1724 *status = ASYNC_WAIT_CTX_get_status(ctx);
1728 int SSL_accept(SSL *s)
1730 if (s->handshake_func == NULL) {
1731 /* Not properly initialized yet */
1732 SSL_set_accept_state(s);
1735 return SSL_do_handshake(s);
1738 int SSL_connect(SSL *s)
1740 if (s->handshake_func == NULL) {
1741 /* Not properly initialized yet */
1742 SSL_set_connect_state(s);
1745 return SSL_do_handshake(s);
1748 long SSL_get_default_timeout(const SSL *s)
1750 return s->method->get_timeout();
1753 static int ssl_async_wait_ctx_cb(void *arg)
1755 SSL *s = (SSL *)arg;
1757 return s->async_cb(s, s->async_cb_arg);
1760 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1761 int (*func) (void *))
1764 if (s->waitctx == NULL) {
1765 s->waitctx = ASYNC_WAIT_CTX_new();
1766 if (s->waitctx == NULL)
1768 if (s->async_cb != NULL
1769 && !ASYNC_WAIT_CTX_set_callback
1770 (s->waitctx, ssl_async_wait_ctx_cb, s))
1773 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1774 sizeof(struct ssl_async_args))) {
1776 s->rwstate = SSL_NOTHING;
1777 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1780 s->rwstate = SSL_ASYNC_PAUSED;
1783 s->rwstate = SSL_ASYNC_NO_JOBS;
1789 s->rwstate = SSL_NOTHING;
1790 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1791 /* Shouldn't happen */
1796 static int ssl_io_intern(void *vargs)
1798 struct ssl_async_args *args;
1803 args = (struct ssl_async_args *)vargs;
1807 switch (args->type) {
1809 return args->f.func_read(s, buf, num, &s->asyncrw);
1811 return args->f.func_write(s, buf, num, &s->asyncrw);
1813 return args->f.func_other(s);
1818 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1820 if (s->handshake_func == NULL) {
1821 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1825 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1826 s->rwstate = SSL_NOTHING;
1830 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1831 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1832 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1836 * If we are a client and haven't received the ServerHello etc then we
1839 ossl_statem_check_finish_init(s, 0);
1841 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1842 struct ssl_async_args args;
1848 args.type = READFUNC;
1849 args.f.func_read = s->method->ssl_read;
1851 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1852 *readbytes = s->asyncrw;
1855 return s->method->ssl_read(s, buf, num, readbytes);
1859 int SSL_read(SSL *s, void *buf, int num)
1865 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1869 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1872 * The cast is safe here because ret should be <= INT_MAX because num is
1876 ret = (int)readbytes;
1881 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1883 int ret = ssl_read_internal(s, buf, num, readbytes);
1890 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1895 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1896 return SSL_READ_EARLY_DATA_ERROR;
1899 switch (s->early_data_state) {
1900 case SSL_EARLY_DATA_NONE:
1901 if (!SSL_in_before(s)) {
1902 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1903 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1904 return SSL_READ_EARLY_DATA_ERROR;
1908 case SSL_EARLY_DATA_ACCEPT_RETRY:
1909 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1910 ret = SSL_accept(s);
1913 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1914 return SSL_READ_EARLY_DATA_ERROR;
1918 case SSL_EARLY_DATA_READ_RETRY:
1919 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1920 s->early_data_state = SSL_EARLY_DATA_READING;
1921 ret = SSL_read_ex(s, buf, num, readbytes);
1923 * State machine will update early_data_state to
1924 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1927 if (ret > 0 || (ret <= 0 && s->early_data_state
1928 != SSL_EARLY_DATA_FINISHED_READING)) {
1929 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1930 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1931 : SSL_READ_EARLY_DATA_ERROR;
1934 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1937 return SSL_READ_EARLY_DATA_FINISH;
1940 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1941 return SSL_READ_EARLY_DATA_ERROR;
1945 int SSL_get_early_data_status(const SSL *s)
1947 return s->ext.early_data;
1950 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1952 if (s->handshake_func == NULL) {
1953 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1957 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1960 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1961 struct ssl_async_args args;
1967 args.type = READFUNC;
1968 args.f.func_read = s->method->ssl_peek;
1970 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1971 *readbytes = s->asyncrw;
1974 return s->method->ssl_peek(s, buf, num, readbytes);
1978 int SSL_peek(SSL *s, void *buf, int num)
1984 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1988 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1991 * The cast is safe here because ret should be <= INT_MAX because num is
1995 ret = (int)readbytes;
2001 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2003 int ret = ssl_peek_internal(s, buf, num, readbytes);
2010 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2012 if (s->handshake_func == NULL) {
2013 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
2017 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2018 s->rwstate = SSL_NOTHING;
2019 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2023 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2024 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2025 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2026 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2029 /* If we are a client and haven't sent the Finished we better do that */
2030 ossl_statem_check_finish_init(s, 1);
2032 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2034 struct ssl_async_args args;
2037 args.buf = (void *)buf;
2039 args.type = WRITEFUNC;
2040 args.f.func_write = s->method->ssl_write;
2042 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2043 *written = s->asyncrw;
2046 return s->method->ssl_write(s, buf, num, written);
2050 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2054 if (s->handshake_func == NULL) {
2055 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2059 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2060 s->rwstate = SSL_NOTHING;
2061 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2065 if (!BIO_get_ktls_send(s->wbio)) {
2066 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2070 /* If we have an alert to send, lets send it */
2071 if (s->s3.alert_dispatch) {
2072 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2074 /* SSLfatal() already called if appropriate */
2077 /* if it went, fall through and send more stuff */
2080 s->rwstate = SSL_WRITING;
2081 if (BIO_flush(s->wbio) <= 0) {
2082 if (!BIO_should_retry(s->wbio)) {
2083 s->rwstate = SSL_NOTHING;
2086 set_sys_error(EAGAIN);
2092 #ifdef OPENSSL_NO_KTLS
2093 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2094 "can't call ktls_sendfile(), ktls disabled");
2097 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2099 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2100 if ((get_last_sys_error() == EAGAIN) ||
2101 (get_last_sys_error() == EINTR) ||
2102 (get_last_sys_error() == EBUSY))
2103 BIO_set_retry_write(s->wbio);
2106 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2109 s->rwstate = SSL_NOTHING;
2114 int SSL_write(SSL *s, const void *buf, int num)
2120 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2124 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2127 * The cast is safe here because ret should be <= INT_MAX because num is
2136 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2138 int ret = ssl_write_internal(s, buf, num, written);
2145 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2147 int ret, early_data_state;
2149 uint32_t partialwrite;
2151 switch (s->early_data_state) {
2152 case SSL_EARLY_DATA_NONE:
2154 || !SSL_in_before(s)
2155 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2156 && (s->psk_use_session_cb == NULL))) {
2157 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2158 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2163 case SSL_EARLY_DATA_CONNECT_RETRY:
2164 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2165 ret = SSL_connect(s);
2168 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2173 case SSL_EARLY_DATA_WRITE_RETRY:
2174 s->early_data_state = SSL_EARLY_DATA_WRITING;
2176 * We disable partial write for early data because we don't keep track
2177 * of how many bytes we've written between the SSL_write_ex() call and
2178 * the flush if the flush needs to be retried)
2180 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2181 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2182 ret = SSL_write_ex(s, buf, num, &writtmp);
2183 s->mode |= partialwrite;
2185 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2188 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2191 case SSL_EARLY_DATA_WRITE_FLUSH:
2192 /* The buffering BIO is still in place so we need to flush it */
2193 if (statem_flush(s) != 1)
2196 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2199 case SSL_EARLY_DATA_FINISHED_READING:
2200 case SSL_EARLY_DATA_READ_RETRY:
2201 early_data_state = s->early_data_state;
2202 /* We are a server writing to an unauthenticated client */
2203 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2204 ret = SSL_write_ex(s, buf, num, written);
2205 /* The buffering BIO is still in place */
2207 (void)BIO_flush(s->wbio);
2208 s->early_data_state = early_data_state;
2212 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2217 int SSL_shutdown(SSL *s)
2220 * Note that this function behaves differently from what one might
2221 * expect. Return values are 0 for no success (yet), 1 for success; but
2222 * calling it once is usually not enough, even if blocking I/O is used
2223 * (see ssl3_shutdown).
2226 if (s->handshake_func == NULL) {
2227 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2231 if (!SSL_in_init(s)) {
2232 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2233 struct ssl_async_args args;
2236 args.type = OTHERFUNC;
2237 args.f.func_other = s->method->ssl_shutdown;
2239 return ssl_start_async_job(s, &args, ssl_io_intern);
2241 return s->method->ssl_shutdown(s);
2244 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2249 int SSL_key_update(SSL *s, int updatetype)
2252 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2253 * negotiated, and that it is appropriate to call SSL_key_update() instead
2254 * of SSL_renegotiate().
2256 if (!SSL_IS_TLS13(s)) {
2257 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2261 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2262 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2263 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2267 if (!SSL_is_init_finished(s)) {
2268 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2272 ossl_statem_set_in_init(s, 1);
2273 s->key_update = updatetype;
2277 int SSL_get_key_update_type(const SSL *s)
2279 return s->key_update;
2282 int SSL_renegotiate(SSL *s)
2284 if (SSL_IS_TLS13(s)) {
2285 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2289 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2290 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2297 return s->method->ssl_renegotiate(s);
2300 int SSL_renegotiate_abbreviated(SSL *s)
2302 if (SSL_IS_TLS13(s)) {
2303 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2307 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2308 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2315 return s->method->ssl_renegotiate(s);
2318 int SSL_renegotiate_pending(const SSL *s)
2321 * becomes true when negotiation is requested; false again once a
2322 * handshake has finished
2324 return (s->renegotiate != 0);
2327 int SSL_new_session_ticket(SSL *s)
2329 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2330 || !SSL_IS_TLS13(s))
2332 s->ext.extra_tickets_expected++;
2336 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2341 case SSL_CTRL_GET_READ_AHEAD:
2342 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2343 case SSL_CTRL_SET_READ_AHEAD:
2344 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2345 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2348 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2349 s->msg_callback_arg = parg;
2353 return (s->mode |= larg);
2354 case SSL_CTRL_CLEAR_MODE:
2355 return (s->mode &= ~larg);
2356 case SSL_CTRL_GET_MAX_CERT_LIST:
2357 return (long)s->max_cert_list;
2358 case SSL_CTRL_SET_MAX_CERT_LIST:
2361 l = (long)s->max_cert_list;
2362 s->max_cert_list = (size_t)larg;
2364 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2365 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2367 #ifndef OPENSSL_NO_KTLS
2368 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2370 #endif /* OPENSSL_NO_KTLS */
2371 s->max_send_fragment = larg;
2372 if (s->max_send_fragment < s->split_send_fragment)
2373 s->split_send_fragment = s->max_send_fragment;
2375 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2376 if ((size_t)larg > s->max_send_fragment || larg == 0)
2378 s->split_send_fragment = larg;
2380 case SSL_CTRL_SET_MAX_PIPELINES:
2381 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2383 s->max_pipelines = larg;
2385 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2387 case SSL_CTRL_GET_RI_SUPPORT:
2388 return s->s3.send_connection_binding;
2389 case SSL_CTRL_CERT_FLAGS:
2390 return (s->cert->cert_flags |= larg);
2391 case SSL_CTRL_CLEAR_CERT_FLAGS:
2392 return (s->cert->cert_flags &= ~larg);
2394 case SSL_CTRL_GET_RAW_CIPHERLIST:
2396 if (s->s3.tmp.ciphers_raw == NULL)
2398 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2399 return (int)s->s3.tmp.ciphers_rawlen;
2401 return TLS_CIPHER_LEN;
2403 case SSL_CTRL_GET_EXTMS_SUPPORT:
2404 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2406 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2410 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2411 return ssl_check_allowed_versions(larg, s->max_proto_version)
2412 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2413 &s->min_proto_version);
2414 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2415 return s->min_proto_version;
2416 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2417 return ssl_check_allowed_versions(s->min_proto_version, larg)
2418 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2419 &s->max_proto_version);
2420 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2421 return s->max_proto_version;
2423 return s->method->ssl_ctrl(s, cmd, larg, parg);
2427 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2430 case SSL_CTRL_SET_MSG_CALLBACK:
2431 s->msg_callback = (void (*)
2432 (int write_p, int version, int content_type,
2433 const void *buf, size_t len, SSL *ssl,
2438 return s->method->ssl_callback_ctrl(s, cmd, fp);
2442 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2444 return ctx->sessions;
2447 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2450 /* For some cases with ctx == NULL perform syntax checks */
2453 case SSL_CTRL_SET_GROUPS_LIST:
2454 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2455 case SSL_CTRL_SET_SIGALGS_LIST:
2456 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2457 return tls1_set_sigalgs_list(NULL, parg, 0);
2464 case SSL_CTRL_GET_READ_AHEAD:
2465 return ctx->read_ahead;
2466 case SSL_CTRL_SET_READ_AHEAD:
2467 l = ctx->read_ahead;
2468 ctx->read_ahead = larg;
2471 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2472 ctx->msg_callback_arg = parg;
2475 case SSL_CTRL_GET_MAX_CERT_LIST:
2476 return (long)ctx->max_cert_list;
2477 case SSL_CTRL_SET_MAX_CERT_LIST:
2480 l = (long)ctx->max_cert_list;
2481 ctx->max_cert_list = (size_t)larg;
2484 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2487 l = (long)ctx->session_cache_size;
2488 ctx->session_cache_size = (size_t)larg;
2490 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2491 return (long)ctx->session_cache_size;
2492 case SSL_CTRL_SET_SESS_CACHE_MODE:
2493 l = ctx->session_cache_mode;
2494 ctx->session_cache_mode = larg;
2496 case SSL_CTRL_GET_SESS_CACHE_MODE:
2497 return ctx->session_cache_mode;
2499 case SSL_CTRL_SESS_NUMBER:
2500 return lh_SSL_SESSION_num_items(ctx->sessions);
2501 case SSL_CTRL_SESS_CONNECT:
2502 return tsan_load(&ctx->stats.sess_connect);
2503 case SSL_CTRL_SESS_CONNECT_GOOD:
2504 return tsan_load(&ctx->stats.sess_connect_good);
2505 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2506 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2507 case SSL_CTRL_SESS_ACCEPT:
2508 return tsan_load(&ctx->stats.sess_accept);
2509 case SSL_CTRL_SESS_ACCEPT_GOOD:
2510 return tsan_load(&ctx->stats.sess_accept_good);
2511 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2512 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2513 case SSL_CTRL_SESS_HIT:
2514 return tsan_load(&ctx->stats.sess_hit);
2515 case SSL_CTRL_SESS_CB_HIT:
2516 return tsan_load(&ctx->stats.sess_cb_hit);
2517 case SSL_CTRL_SESS_MISSES:
2518 return tsan_load(&ctx->stats.sess_miss);
2519 case SSL_CTRL_SESS_TIMEOUTS:
2520 return tsan_load(&ctx->stats.sess_timeout);
2521 case SSL_CTRL_SESS_CACHE_FULL:
2522 return tsan_load(&ctx->stats.sess_cache_full);
2524 return (ctx->mode |= larg);
2525 case SSL_CTRL_CLEAR_MODE:
2526 return (ctx->mode &= ~larg);
2527 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2528 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2530 ctx->max_send_fragment = larg;
2531 if (ctx->max_send_fragment < ctx->split_send_fragment)
2532 ctx->split_send_fragment = ctx->max_send_fragment;
2534 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2535 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2537 ctx->split_send_fragment = larg;
2539 case SSL_CTRL_SET_MAX_PIPELINES:
2540 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2542 ctx->max_pipelines = larg;
2544 case SSL_CTRL_CERT_FLAGS:
2545 return (ctx->cert->cert_flags |= larg);
2546 case SSL_CTRL_CLEAR_CERT_FLAGS:
2547 return (ctx->cert->cert_flags &= ~larg);
2548 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2549 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2550 && ssl_set_version_bound(ctx->method->version, (int)larg,
2551 &ctx->min_proto_version);
2552 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2553 return ctx->min_proto_version;
2554 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2555 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2556 && ssl_set_version_bound(ctx->method->version, (int)larg,
2557 &ctx->max_proto_version);
2558 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2559 return ctx->max_proto_version;
2561 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2565 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2568 case SSL_CTRL_SET_MSG_CALLBACK:
2569 ctx->msg_callback = (void (*)
2570 (int write_p, int version, int content_type,
2571 const void *buf, size_t len, SSL *ssl,
2576 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2580 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2589 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2590 const SSL_CIPHER *const *bp)
2592 if ((*ap)->id > (*bp)->id)
2594 if ((*ap)->id < (*bp)->id)
2599 /** return a STACK of the ciphers available for the SSL and in order of
2601 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2604 if (s->cipher_list != NULL) {
2605 return s->cipher_list;
2606 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2607 return s->ctx->cipher_list;
2613 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2615 if ((s == NULL) || !s->server)
2617 return s->peer_ciphers;
2620 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2622 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2625 ciphers = SSL_get_ciphers(s);
2628 if (!ssl_set_client_disabled(s))
2630 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2631 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2632 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2634 sk = sk_SSL_CIPHER_new_null();
2637 if (!sk_SSL_CIPHER_push(sk, c)) {
2638 sk_SSL_CIPHER_free(sk);
2646 /** return a STACK of the ciphers available for the SSL and in order of
2648 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2651 if (s->cipher_list_by_id != NULL) {
2652 return s->cipher_list_by_id;
2653 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2654 return s->ctx->cipher_list_by_id;
2660 /** The old interface to get the same thing as SSL_get_ciphers() */
2661 const char *SSL_get_cipher_list(const SSL *s, int n)
2663 const SSL_CIPHER *c;
2664 STACK_OF(SSL_CIPHER) *sk;
2668 sk = SSL_get_ciphers(s);
2669 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2671 c = sk_SSL_CIPHER_value(sk, n);
2677 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2679 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2682 return ctx->cipher_list;
2687 * Distinguish between ciphers controlled by set_ciphersuite() and
2688 * set_cipher_list() when counting.
2690 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2693 const SSL_CIPHER *c;
2697 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2698 c = sk_SSL_CIPHER_value(sk, i);
2699 if (c->min_tls >= TLS1_3_VERSION)
2706 /** specify the ciphers to be used by default by the SSL_CTX */
2707 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2709 STACK_OF(SSL_CIPHER) *sk;
2711 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2712 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2715 * ssl_create_cipher_list may return an empty stack if it was unable to
2716 * find a cipher matching the given rule string (for example if the rule
2717 * string specifies a cipher which has been disabled). This is not an
2718 * error as far as ssl_create_cipher_list is concerned, and hence
2719 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2723 else if (cipher_list_tls12_num(sk) == 0) {
2724 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2730 /** specify the ciphers to be used by the SSL */
2731 int SSL_set_cipher_list(SSL *s, const char *str)
2733 STACK_OF(SSL_CIPHER) *sk;
2735 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2736 &s->cipher_list, &s->cipher_list_by_id, str,
2738 /* see comment in SSL_CTX_set_cipher_list */
2741 else if (cipher_list_tls12_num(sk) == 0) {
2742 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2748 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2751 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2752 const SSL_CIPHER *c;
2756 || s->peer_ciphers == NULL
2761 clntsk = s->peer_ciphers;
2762 srvrsk = SSL_get_ciphers(s);
2763 if (clntsk == NULL || srvrsk == NULL)
2766 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2769 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2772 c = sk_SSL_CIPHER_value(clntsk, i);
2773 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2776 n = strlen(c->name);
2793 * Return the requested servername (SNI) value. Note that the behaviour varies
2795 * - whether this is called by the client or the server,
2796 * - if we are before or during/after the handshake,
2797 * - if a resumption or normal handshake is being attempted/has occurred
2798 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2800 * Note that only the host_name type is defined (RFC 3546).
2802 const char *SSL_get_servername(const SSL *s, const int type)
2805 * If we don't know if we are the client or the server yet then we assume
2808 int server = s->handshake_func == NULL ? 0 : s->server;
2809 if (type != TLSEXT_NAMETYPE_host_name)
2815 * In TLSv1.3 on the server SNI is not associated with the session
2816 * but in TLSv1.2 or below it is.
2818 * Before the handshake:
2821 * During/after the handshake (TLSv1.2 or below resumption occurred):
2822 * - If a servername was accepted by the server in the original
2823 * handshake then it will return that servername, or NULL otherwise.
2825 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2826 * - The function will return the servername requested by the client in
2827 * this handshake or NULL if none was requested.
2829 if (s->hit && !SSL_IS_TLS13(s))
2830 return s->session->ext.hostname;
2835 * Before the handshake:
2836 * - If a servername has been set via a call to
2837 * SSL_set_tlsext_host_name() then it will return that servername
2838 * - If one has not been set, but a TLSv1.2 resumption is being
2839 * attempted and the session from the original handshake had a
2840 * servername accepted by the server then it will return that
2842 * - Otherwise it returns NULL
2844 * During/after the handshake (TLSv1.2 or below resumption occurred):
2845 * - If the session from the orignal handshake had a servername accepted
2846 * by the server then it will return that servername.
2847 * - Otherwise it returns the servername set via
2848 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2850 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2851 * - It will return the servername set via SSL_set_tlsext_host_name()
2852 * (or NULL if it was not called).
2854 if (SSL_in_before(s)) {
2855 if (s->ext.hostname == NULL
2856 && s->session != NULL
2857 && s->session->ssl_version != TLS1_3_VERSION)
2858 return s->session->ext.hostname;
2860 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2861 return s->session->ext.hostname;
2865 return s->ext.hostname;
2868 int SSL_get_servername_type(const SSL *s)
2870 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2871 return TLSEXT_NAMETYPE_host_name;
2876 * SSL_select_next_proto implements the standard protocol selection. It is
2877 * expected that this function is called from the callback set by
2878 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2879 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2880 * not included in the length. A byte string of length 0 is invalid. No byte
2881 * string may be truncated. The current, but experimental algorithm for
2882 * selecting the protocol is: 1) If the server doesn't support NPN then this
2883 * is indicated to the callback. In this case, the client application has to
2884 * abort the connection or have a default application level protocol. 2) If
2885 * the server supports NPN, but advertises an empty list then the client
2886 * selects the first protocol in its list, but indicates via the API that this
2887 * fallback case was enacted. 3) Otherwise, the client finds the first
2888 * protocol in the server's list that it supports and selects this protocol.
2889 * This is because it's assumed that the server has better information about
2890 * which protocol a client should use. 4) If the client doesn't support any
2891 * of the server's advertised protocols, then this is treated the same as
2892 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2893 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2895 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2896 const unsigned char *server,
2897 unsigned int server_len,
2898 const unsigned char *client, unsigned int client_len)
2901 const unsigned char *result;
2902 int status = OPENSSL_NPN_UNSUPPORTED;
2905 * For each protocol in server preference order, see if we support it.
2907 for (i = 0; i < server_len;) {
2908 for (j = 0; j < client_len;) {
2909 if (server[i] == client[j] &&
2910 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2911 /* We found a match */
2912 result = &server[i];
2913 status = OPENSSL_NPN_NEGOTIATED;
2923 /* There's no overlap between our protocols and the server's list. */
2925 status = OPENSSL_NPN_NO_OVERLAP;
2928 *out = (unsigned char *)result + 1;
2929 *outlen = result[0];
2933 #ifndef OPENSSL_NO_NEXTPROTONEG
2935 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2936 * client's requested protocol for this connection and returns 0. If the
2937 * client didn't request any protocol, then *data is set to NULL. Note that
2938 * the client can request any protocol it chooses. The value returned from
2939 * this function need not be a member of the list of supported protocols
2940 * provided by the callback.
2942 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2946 if (*data == NULL) {
2949 *len = (unsigned int)s->ext.npn_len;
2954 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2955 * a TLS server needs a list of supported protocols for Next Protocol
2956 * Negotiation. The returned list must be in wire format. The list is
2957 * returned by setting |out| to point to it and |outlen| to its length. This
2958 * memory will not be modified, but one should assume that the SSL* keeps a
2959 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2960 * wishes to advertise. Otherwise, no such extension will be included in the
2963 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2964 SSL_CTX_npn_advertised_cb_func cb,
2967 ctx->ext.npn_advertised_cb = cb;
2968 ctx->ext.npn_advertised_cb_arg = arg;
2972 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2973 * client needs to select a protocol from the server's provided list. |out|
2974 * must be set to point to the selected protocol (which may be within |in|).
2975 * The length of the protocol name must be written into |outlen|. The
2976 * server's advertised protocols are provided in |in| and |inlen|. The
2977 * callback can assume that |in| is syntactically valid. The client must
2978 * select a protocol. It is fatal to the connection if this callback returns
2979 * a value other than SSL_TLSEXT_ERR_OK.
2981 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2982 SSL_CTX_npn_select_cb_func cb,
2985 ctx->ext.npn_select_cb = cb;
2986 ctx->ext.npn_select_cb_arg = arg;
2991 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2992 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2993 * length-prefixed strings). Returns 0 on success.
2995 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2996 unsigned int protos_len)
2998 OPENSSL_free(ctx->ext.alpn);
2999 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
3000 if (ctx->ext.alpn == NULL) {
3001 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3004 ctx->ext.alpn_len = protos_len;
3010 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3011 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3012 * length-prefixed strings). Returns 0 on success.
3014 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3015 unsigned int protos_len)
3017 OPENSSL_free(ssl->ext.alpn);
3018 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
3019 if (ssl->ext.alpn == NULL) {
3020 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3023 ssl->ext.alpn_len = protos_len;
3029 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3030 * called during ClientHello processing in order to select an ALPN protocol
3031 * from the client's list of offered protocols.
3033 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3034 SSL_CTX_alpn_select_cb_func cb,
3037 ctx->ext.alpn_select_cb = cb;
3038 ctx->ext.alpn_select_cb_arg = arg;
3042 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3043 * On return it sets |*data| to point to |*len| bytes of protocol name
3044 * (not including the leading length-prefix byte). If the server didn't
3045 * respond with a negotiated protocol then |*len| will be zero.
3047 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3050 *data = ssl->s3.alpn_selected;
3054 *len = (unsigned int)ssl->s3.alpn_selected_len;
3057 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3058 const char *label, size_t llen,
3059 const unsigned char *context, size_t contextlen,
3062 if (s->session == NULL
3063 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3066 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3068 contextlen, use_context);
3071 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3072 const char *label, size_t llen,
3073 const unsigned char *context,
3076 if (s->version != TLS1_3_VERSION)
3079 return tls13_export_keying_material_early(s, out, olen, label, llen,
3080 context, contextlen);
3083 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3085 const unsigned char *session_id = a->session_id;
3087 unsigned char tmp_storage[4];
3089 if (a->session_id_length < sizeof(tmp_storage)) {
3090 memset(tmp_storage, 0, sizeof(tmp_storage));
3091 memcpy(tmp_storage, a->session_id, a->session_id_length);
3092 session_id = tmp_storage;
3096 ((unsigned long)session_id[0]) |
3097 ((unsigned long)session_id[1] << 8L) |
3098 ((unsigned long)session_id[2] << 16L) |
3099 ((unsigned long)session_id[3] << 24L);
3104 * NB: If this function (or indeed the hash function which uses a sort of
3105 * coarser function than this one) is changed, ensure
3106 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3107 * being able to construct an SSL_SESSION that will collide with any existing
3108 * session with a matching session ID.
3110 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3112 if (a->ssl_version != b->ssl_version)
3114 if (a->session_id_length != b->session_id_length)
3116 return memcmp(a->session_id, b->session_id, a->session_id_length);
3120 * These wrapper functions should remain rather than redeclaring
3121 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3122 * variable. The reason is that the functions aren't static, they're exposed
3126 SSL_CTX *SSL_CTX_new_ex(OPENSSL_CTX *libctx, const char *propq,
3127 const SSL_METHOD *meth)
3129 SSL_CTX *ret = NULL;
3132 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
3136 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3139 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3140 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3143 ret = OPENSSL_zalloc(sizeof(*ret));
3147 ret->libctx = libctx;
3148 if (propq != NULL) {
3149 ret->propq = OPENSSL_strdup(propq);
3150 if (ret->propq == NULL)
3155 ret->min_proto_version = 0;
3156 ret->max_proto_version = 0;
3157 ret->mode = SSL_MODE_AUTO_RETRY;
3158 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3159 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3160 /* We take the system default. */
3161 ret->session_timeout = meth->get_timeout();
3162 ret->references = 1;
3163 ret->lock = CRYPTO_THREAD_lock_new();
3164 if (ret->lock == NULL) {
3165 SSLerr(0, ERR_R_MALLOC_FAILURE);
3169 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3170 ret->verify_mode = SSL_VERIFY_NONE;
3171 if ((ret->cert = ssl_cert_new()) == NULL)
3174 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3175 if (ret->sessions == NULL)
3177 ret->cert_store = X509_STORE_new();
3178 if (ret->cert_store == NULL)
3180 #ifndef OPENSSL_NO_CT
3181 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3182 if (ret->ctlog_store == NULL)
3186 /* initialize cipher/digest methods table */
3187 if (!ssl_load_ciphers(ret))
3189 /* initialise sig algs */
3190 if (!ssl_setup_sig_algs(ret))
3194 if (!ssl_load_groups(ret))
3197 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3200 if (!ssl_create_cipher_list(ret->method,
3201 ret->tls13_ciphersuites,
3202 &ret->cipher_list, &ret->cipher_list_by_id,
3203 OSSL_default_cipher_list(), ret->cert)
3204 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3205 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3209 ret->param = X509_VERIFY_PARAM_new();
3210 if (ret->param == NULL)
3214 * If these aren't available from the provider we'll get NULL returns.
3215 * That's fine but will cause errors later if SSLv3 is negotiated
3217 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3218 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3220 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3223 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3226 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3229 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3232 /* No compression for DTLS */
3233 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3234 ret->comp_methods = SSL_COMP_get_compression_methods();
3236 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3237 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3239 /* Setup RFC5077 ticket keys */
3240 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3241 sizeof(ret->ext.tick_key_name)) <= 0)
3242 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3243 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3244 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3245 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3246 ret->options |= SSL_OP_NO_TICKET;
3248 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3249 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3252 #ifndef OPENSSL_NO_SRP
3253 if (!SSL_CTX_SRP_CTX_init(ret))
3256 #ifndef OPENSSL_NO_ENGINE
3257 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3258 # define eng_strx(x) #x
3259 # define eng_str(x) eng_strx(x)
3260 /* Use specific client engine automatically... ignore errors */
3263 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3266 ENGINE_load_builtin_engines();
3267 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3269 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3275 * Default is to connect to non-RI servers. When RI is more widely
3276 * deployed might change this.
3278 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3280 * Disable compression by default to prevent CRIME. Applications can
3281 * re-enable compression by configuring
3282 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3283 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3284 * middlebox compatibility by default. This may be disabled by default in
3285 * a later OpenSSL version.
3287 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3289 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3292 * We cannot usefully set a default max_early_data here (which gets
3293 * propagated in SSL_new(), for the following reason: setting the
3294 * SSL field causes tls_construct_stoc_early_data() to tell the
3295 * client that early data will be accepted when constructing a TLS 1.3
3296 * session ticket, and the client will accordingly send us early data
3297 * when using that ticket (if the client has early data to send).
3298 * However, in order for the early data to actually be consumed by
3299 * the application, the application must also have calls to
3300 * SSL_read_early_data(); otherwise we'll just skip past the early data
3301 * and ignore it. So, since the application must add calls to
3302 * SSL_read_early_data(), we also require them to add
3303 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3304 * eliminating the bandwidth-wasting early data in the case described
3307 ret->max_early_data = 0;
3310 * Default recv_max_early_data is a fully loaded single record. Could be
3311 * split across multiple records in practice. We set this differently to
3312 * max_early_data so that, in the default case, we do not advertise any
3313 * support for early_data, but if a client were to send us some (e.g.
3314 * because of an old, stale ticket) then we will tolerate it and skip over
3317 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3319 /* By default we send two session tickets automatically in TLSv1.3 */
3320 ret->num_tickets = 2;
3322 ssl_ctx_system_config(ret);
3326 SSLerr(0, ERR_R_MALLOC_FAILURE);
3332 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3334 return SSL_CTX_new_ex(NULL, NULL, meth);
3337 int SSL_CTX_up_ref(SSL_CTX *ctx)
3341 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3344 REF_PRINT_COUNT("SSL_CTX", ctx);
3345 REF_ASSERT_ISNT(i < 2);
3346 return ((i > 1) ? 1 : 0);
3349 void SSL_CTX_free(SSL_CTX *a)
3357 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3358 REF_PRINT_COUNT("SSL_CTX", a);
3361 REF_ASSERT_ISNT(i < 0);
3363 X509_VERIFY_PARAM_free(a->param);
3364 dane_ctx_final(&a->dane);
3367 * Free internal session cache. However: the remove_cb() may reference
3368 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3369 * after the sessions were flushed.
3370 * As the ex_data handling routines might also touch the session cache,
3371 * the most secure solution seems to be: empty (flush) the cache, then
3372 * free ex_data, then finally free the cache.
3373 * (See ticket [openssl.org #212].)
3375 if (a->sessions != NULL)
3376 SSL_CTX_flush_sessions(a, 0);
3378 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3379 lh_SSL_SESSION_free(a->sessions);
3380 X509_STORE_free(a->cert_store);
3381 #ifndef OPENSSL_NO_CT
3382 CTLOG_STORE_free(a->ctlog_store);
3384 sk_SSL_CIPHER_free(a->cipher_list);
3385 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3386 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3387 ssl_cert_free(a->cert);
3388 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3389 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3390 sk_X509_pop_free(a->extra_certs, X509_free);
3391 a->comp_methods = NULL;
3392 #ifndef OPENSSL_NO_SRTP
3393 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3395 #ifndef OPENSSL_NO_SRP
3396 SSL_CTX_SRP_CTX_free(a);
3398 #ifndef OPENSSL_NO_ENGINE
3399 ENGINE_finish(a->client_cert_engine);
3402 #ifndef OPENSSL_NO_EC
3403 OPENSSL_free(a->ext.ecpointformats);
3405 OPENSSL_free(a->ext.supportedgroups);
3406 OPENSSL_free(a->ext.alpn);
3407 OPENSSL_secure_free(a->ext.secure);
3409 ssl_evp_md_free(a->md5);
3410 ssl_evp_md_free(a->sha1);
3412 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3413 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3414 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3415 ssl_evp_md_free(a->ssl_digest_methods[j]);
3416 for (j = 0; j < a->group_list_len; j++) {
3417 OPENSSL_free(a->group_list[j].tlsname);
3418 OPENSSL_free(a->group_list[j].realname);
3419 OPENSSL_free(a->group_list[j].algorithm);
3421 OPENSSL_free(a->group_list);
3423 OPENSSL_free(a->sigalg_lookup_cache);
3425 CRYPTO_THREAD_lock_free(a->lock);
3427 OPENSSL_free(a->propq);
3432 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3434 ctx->default_passwd_callback = cb;
3437 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3439 ctx->default_passwd_callback_userdata = u;
3442 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3444 return ctx->default_passwd_callback;
3447 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3449 return ctx->default_passwd_callback_userdata;
3452 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3454 s->default_passwd_callback = cb;
3457 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3459 s->default_passwd_callback_userdata = u;
3462 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3464 return s->default_passwd_callback;
3467 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3469 return s->default_passwd_callback_userdata;
3472 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3473 int (*cb) (X509_STORE_CTX *, void *),
3476 ctx->app_verify_callback = cb;
3477 ctx->app_verify_arg = arg;
3480 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3481 int (*cb) (int, X509_STORE_CTX *))
3483 ctx->verify_mode = mode;
3484 ctx->default_verify_callback = cb;
3487 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3489 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3492 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3494 ssl_cert_set_cert_cb(c->cert, cb, arg);
3497 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3499 ssl_cert_set_cert_cb(s->cert, cb, arg);
3502 void ssl_set_masks(SSL *s)
3505 uint32_t *pvalid = s->s3.tmp.valid_flags;
3506 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3507 unsigned long mask_k, mask_a;
3508 #ifndef OPENSSL_NO_EC
3509 int have_ecc_cert, ecdsa_ok;
3514 #ifndef OPENSSL_NO_DH
3515 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3520 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3521 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3522 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3523 #ifndef OPENSSL_NO_EC
3524 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3529 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3530 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3532 #ifndef OPENSSL_NO_GOST
3533 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3534 mask_k |= SSL_kGOST | SSL_kGOST18;
3535 mask_a |= SSL_aGOST12;
3537 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3538 mask_k |= SSL_kGOST | SSL_kGOST18;
3539 mask_a |= SSL_aGOST12;
3541 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3542 mask_k |= SSL_kGOST;
3543 mask_a |= SSL_aGOST01;
3554 * If we only have an RSA-PSS certificate allow RSA authentication
3555 * if TLS 1.2 and peer supports it.
3558 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3559 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3560 && TLS1_get_version(s) == TLS1_2_VERSION))
3567 mask_a |= SSL_aNULL;
3570 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3571 * depending on the key usage extension.
3573 #ifndef OPENSSL_NO_EC
3574 if (have_ecc_cert) {
3576 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3577 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3578 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3581 mask_a |= SSL_aECDSA;
3583 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3584 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3585 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3586 && TLS1_get_version(s) == TLS1_2_VERSION)
3587 mask_a |= SSL_aECDSA;
3589 /* Allow Ed448 for TLS 1.2 if peer supports it */
3590 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3591 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3592 && TLS1_get_version(s) == TLS1_2_VERSION)
3593 mask_a |= SSL_aECDSA;
3596 #ifndef OPENSSL_NO_EC
3597 mask_k |= SSL_kECDHE;
3600 #ifndef OPENSSL_NO_PSK
3603 if (mask_k & SSL_kRSA)
3604 mask_k |= SSL_kRSAPSK;
3605 if (mask_k & SSL_kDHE)
3606 mask_k |= SSL_kDHEPSK;
3607 if (mask_k & SSL_kECDHE)
3608 mask_k |= SSL_kECDHEPSK;
3611 s->s3.tmp.mask_k = mask_k;
3612 s->s3.tmp.mask_a = mask_a;
3615 #ifndef OPENSSL_NO_EC
3617 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3619 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3620 /* key usage, if present, must allow signing */
3621 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3622 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3623 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3627 return 1; /* all checks are ok */
3632 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3633 size_t *serverinfo_length)
3635 CERT_PKEY *cpk = s->s3.tmp.cert;
3636 *serverinfo_length = 0;
3638 if (cpk == NULL || cpk->serverinfo == NULL)
3641 *serverinfo = cpk->serverinfo;
3642 *serverinfo_length = cpk->serverinfo_length;
3646 void ssl_update_cache(SSL *s, int mode)
3651 * If the session_id_length is 0, we are not supposed to cache it, and it
3652 * would be rather hard to do anyway :-)
3654 if (s->session->session_id_length == 0)
3658 * If sid_ctx_length is 0 there is no specific application context
3659 * associated with this session, so when we try to resume it and
3660 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3661 * indication that this is actually a session for the proper application
3662 * context, and the *handshake* will fail, not just the resumption attempt.
3663 * Do not cache (on the server) these sessions that are not resumable
3664 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3666 if (s->server && s->session->sid_ctx_length == 0
3667 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3670 i = s->session_ctx->session_cache_mode;
3672 && (!s->hit || SSL_IS_TLS13(s))) {
3674 * Add the session to the internal cache. In server side TLSv1.3 we
3675 * normally don't do this because by default it's a full stateless ticket
3676 * with only a dummy session id so there is no reason to cache it,
3678 * - we are doing early_data, in which case we cache so that we can
3680 * - the application has set a remove_session_cb so needs to know about
3681 * session timeout events
3682 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3684 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3685 && (!SSL_IS_TLS13(s)
3687 || (s->max_early_data > 0
3688 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3689 || s->session_ctx->remove_session_cb != NULL
3690 || (s->options & SSL_OP_NO_TICKET) != 0))
3691 SSL_CTX_add_session(s->session_ctx, s->session);
3694 * Add the session to the external cache. We do this even in server side
3695 * TLSv1.3 without early data because some applications just want to
3696 * know about the creation of a session and aren't doing a full cache.
3698 if (s->session_ctx->new_session_cb != NULL) {
3699 SSL_SESSION_up_ref(s->session);
3700 if (!s->session_ctx->new_session_cb(s, s->session))
3701 SSL_SESSION_free(s->session);
3705 /* auto flush every 255 connections */
3706 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3707 TSAN_QUALIFIER int *stat;
3708 if (mode & SSL_SESS_CACHE_CLIENT)
3709 stat = &s->session_ctx->stats.sess_connect_good;
3711 stat = &s->session_ctx->stats.sess_accept_good;
3712 if ((tsan_load(stat) & 0xff) == 0xff)
3713 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3717 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3722 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3727 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3731 if (s->method != meth) {
3732 const SSL_METHOD *sm = s->method;
3733 int (*hf) (SSL *) = s->handshake_func;
3735 if (sm->version == meth->version)
3740 ret = s->method->ssl_new(s);
3743 if (hf == sm->ssl_connect)
3744 s->handshake_func = meth->ssl_connect;
3745 else if (hf == sm->ssl_accept)
3746 s->handshake_func = meth->ssl_accept;
3751 int SSL_get_error(const SSL *s, int i)
3758 return SSL_ERROR_NONE;
3761 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3762 * where we do encode the error
3764 if ((l = ERR_peek_error()) != 0) {
3765 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3766 return SSL_ERROR_SYSCALL;
3768 return SSL_ERROR_SSL;
3771 if (SSL_want_read(s)) {
3772 bio = SSL_get_rbio(s);
3773 if (BIO_should_read(bio))
3774 return SSL_ERROR_WANT_READ;
3775 else if (BIO_should_write(bio))
3777 * This one doesn't make too much sense ... We never try to write
3778 * to the rbio, and an application program where rbio and wbio
3779 * are separate couldn't even know what it should wait for.
3780 * However if we ever set s->rwstate incorrectly (so that we have
3781 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3782 * wbio *are* the same, this test works around that bug; so it
3783 * might be safer to keep it.
3785 return SSL_ERROR_WANT_WRITE;
3786 else if (BIO_should_io_special(bio)) {
3787 reason = BIO_get_retry_reason(bio);
3788 if (reason == BIO_RR_CONNECT)
3789 return SSL_ERROR_WANT_CONNECT;
3790 else if (reason == BIO_RR_ACCEPT)
3791 return SSL_ERROR_WANT_ACCEPT;
3793 return SSL_ERROR_SYSCALL; /* unknown */
3797 if (SSL_want_write(s)) {
3798 /* Access wbio directly - in order to use the buffered bio if present */
3800 if (BIO_should_write(bio))
3801 return SSL_ERROR_WANT_WRITE;
3802 else if (BIO_should_read(bio))
3804 * See above (SSL_want_read(s) with BIO_should_write(bio))
3806 return SSL_ERROR_WANT_READ;
3807 else if (BIO_should_io_special(bio)) {
3808 reason = BIO_get_retry_reason(bio);
3809 if (reason == BIO_RR_CONNECT)
3810 return SSL_ERROR_WANT_CONNECT;
3811 else if (reason == BIO_RR_ACCEPT)
3812 return SSL_ERROR_WANT_ACCEPT;
3814 return SSL_ERROR_SYSCALL;
3817 if (SSL_want_x509_lookup(s))
3818 return SSL_ERROR_WANT_X509_LOOKUP;
3819 if (SSL_want_async(s))
3820 return SSL_ERROR_WANT_ASYNC;
3821 if (SSL_want_async_job(s))
3822 return SSL_ERROR_WANT_ASYNC_JOB;
3823 if (SSL_want_client_hello_cb(s))
3824 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3826 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3827 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3828 return SSL_ERROR_ZERO_RETURN;
3830 return SSL_ERROR_SYSCALL;
3833 static int ssl_do_handshake_intern(void *vargs)
3835 struct ssl_async_args *args;
3838 args = (struct ssl_async_args *)vargs;
3841 return s->handshake_func(s);
3844 int SSL_do_handshake(SSL *s)
3848 if (s->handshake_func == NULL) {
3849 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3853 ossl_statem_check_finish_init(s, -1);
3855 s->method->ssl_renegotiate_check(s, 0);
3857 if (SSL_in_init(s) || SSL_in_before(s)) {
3858 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3859 struct ssl_async_args args;
3863 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3865 ret = s->handshake_func(s);
3871 void SSL_set_accept_state(SSL *s)
3875 ossl_statem_clear(s);
3876 s->handshake_func = s->method->ssl_accept;
3880 void SSL_set_connect_state(SSL *s)
3884 ossl_statem_clear(s);
3885 s->handshake_func = s->method->ssl_connect;
3889 int ssl_undefined_function(SSL *s)
3891 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3895 int ssl_undefined_void_function(void)
3897 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3898 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3902 int ssl_undefined_const_function(const SSL *s)
3907 const SSL_METHOD *ssl_bad_method(int ver)
3909 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3913 const char *ssl_protocol_to_string(int version)
3917 case TLS1_3_VERSION:
3920 case TLS1_2_VERSION:
3923 case TLS1_1_VERSION:
3938 case DTLS1_2_VERSION:
3946 const char *SSL_get_version(const SSL *s)
3948 return ssl_protocol_to_string(s->version);
3951 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3953 STACK_OF(X509_NAME) *sk;
3962 if ((sk = sk_X509_NAME_new_null()) == NULL)
3964 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3965 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3967 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3970 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3972 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3981 SSL *SSL_dup(SSL *s)
3986 /* If we're not quiescent, just up_ref! */
3987 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3988 CRYPTO_UP_REF(&s->references, &i, s->lock);
3993 * Otherwise, copy configuration state, and session if set.
3995 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3998 if (s->session != NULL) {
4000 * Arranges to share the same session via up_ref. This "copies"
4001 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4003 if (!SSL_copy_session_id(ret, s))
4007 * No session has been established yet, so we have to expect that
4008 * s->cert or ret->cert will be changed later -- they should not both
4009 * point to the same object, and thus we can't use
4010 * SSL_copy_session_id.
4012 if (!SSL_set_ssl_method(ret, s->method))
4015 if (s->cert != NULL) {
4016 ssl_cert_free(ret->cert);
4017 ret->cert = ssl_cert_dup(s->cert);
4018 if (ret->cert == NULL)
4022 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4023 (int)s->sid_ctx_length))
4027 if (!ssl_dane_dup(ret, s))
4029 ret->version = s->version;
4030 ret->options = s->options;
4031 ret->min_proto_version = s->min_proto_version;
4032 ret->max_proto_version = s->max_proto_version;
4033 ret->mode = s->mode;
4034 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4035 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4036 ret->msg_callback = s->msg_callback;
4037 ret->msg_callback_arg = s->msg_callback_arg;
4038 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4039 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4040 ret->generate_session_id = s->generate_session_id;
4042 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4044 /* copy app data, a little dangerous perhaps */
4045 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4048 ret->server = s->server;
4049 if (s->handshake_func) {
4051 SSL_set_accept_state(ret);
4053 SSL_set_connect_state(ret);
4055 ret->shutdown = s->shutdown;
4058 ret->default_passwd_callback = s->default_passwd_callback;
4059 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4061 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4063 /* dup the cipher_list and cipher_list_by_id stacks */
4064 if (s->cipher_list != NULL) {
4065 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4068 if (s->cipher_list_by_id != NULL)
4069 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4073 /* Dup the client_CA list */
4074 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4075 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4085 void ssl_clear_cipher_ctx(SSL *s)
4087 if (s->enc_read_ctx != NULL) {
4088 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4089 s->enc_read_ctx = NULL;
4091 if (s->enc_write_ctx != NULL) {
4092 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4093 s->enc_write_ctx = NULL;
4095 #ifndef OPENSSL_NO_COMP
4096 COMP_CTX_free(s->expand);
4098 COMP_CTX_free(s->compress);
4103 X509 *SSL_get_certificate(const SSL *s)
4105 if (s->cert != NULL)
4106 return s->cert->key->x509;
4111 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4113 if (s->cert != NULL)
4114 return s->cert->key->privatekey;
4119 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4121 if (ctx->cert != NULL)
4122 return ctx->cert->key->x509;
4127 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4129 if (ctx->cert != NULL)
4130 return ctx->cert->key->privatekey;
4135 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4137 if ((s->session != NULL) && (s->session->cipher != NULL))
4138 return s->session->cipher;
4142 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4144 return s->s3.tmp.new_cipher;
4147 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4149 #ifndef OPENSSL_NO_COMP
4150 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4156 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4158 #ifndef OPENSSL_NO_COMP
4159 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4165 int ssl_init_wbio_buffer(SSL *s)
4169 if (s->bbio != NULL) {
4170 /* Already buffered. */
4174 bbio = BIO_new(BIO_f_buffer());
4175 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4177 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4181 s->wbio = BIO_push(bbio, s->wbio);
4186 int ssl_free_wbio_buffer(SSL *s)
4188 /* callers ensure s is never null */
4189 if (s->bbio == NULL)
4192 s->wbio = BIO_pop(s->wbio);
4199 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4201 ctx->quiet_shutdown = mode;
4204 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4206 return ctx->quiet_shutdown;
4209 void SSL_set_quiet_shutdown(SSL *s, int mode)
4211 s->quiet_shutdown = mode;
4214 int SSL_get_quiet_shutdown(const SSL *s)
4216 return s->quiet_shutdown;
4219 void SSL_set_shutdown(SSL *s, int mode)
4224 int SSL_get_shutdown(const SSL *s)
4229 int SSL_version(const SSL *s)
4234 int SSL_client_version(const SSL *s)
4236 return s->client_version;
4239 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4244 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4247 if (ssl->ctx == ctx)
4250 ctx = ssl->session_ctx;
4251 new_cert = ssl_cert_dup(ctx->cert);
4252 if (new_cert == NULL) {
4256 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4257 ssl_cert_free(new_cert);
4261 ssl_cert_free(ssl->cert);
4262 ssl->cert = new_cert;
4265 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4266 * so setter APIs must prevent invalid lengths from entering the system.
4268 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4272 * If the session ID context matches that of the parent SSL_CTX,
4273 * inherit it from the new SSL_CTX as well. If however the context does
4274 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4275 * leave it unchanged.
4277 if ((ssl->ctx != NULL) &&
4278 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4279 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4280 ssl->sid_ctx_length = ctx->sid_ctx_length;
4281 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4284 SSL_CTX_up_ref(ctx);
4285 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4291 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4293 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4297 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4299 X509_LOOKUP *lookup;
4301 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4305 /* We ignore errors, in case the directory doesn't exist */
4308 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4315 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4317 X509_LOOKUP *lookup;
4319 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4323 /* We ignore errors, in case the directory doesn't exist */
4326 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4334 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4336 X509_LOOKUP *lookup;
4338 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4342 /* We ignore errors, in case the directory doesn't exist */
4345 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4352 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4354 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4358 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4360 return X509_STORE_load_path(ctx->cert_store, CApath);
4363 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4365 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
4369 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4372 if (CAfile == NULL && CApath == NULL)
4374 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4376 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4381 void SSL_set_info_callback(SSL *ssl,
4382 void (*cb) (const SSL *ssl, int type, int val))
4384 ssl->info_callback = cb;
4388 * One compiler (Diab DCC) doesn't like argument names in returned function
4391 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4394 return ssl->info_callback;
4397 void SSL_set_verify_result(SSL *ssl, long arg)
4399 ssl->verify_result = arg;
4402 long SSL_get_verify_result(const SSL *ssl)
4404 return ssl->verify_result;
4407 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4410 return sizeof(ssl->s3.client_random);
4411 if (outlen > sizeof(ssl->s3.client_random))
4412 outlen = sizeof(ssl->s3.client_random);
4413 memcpy(out, ssl->s3.client_random, outlen);
4417 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4420 return sizeof(ssl->s3.server_random);
4421 if (outlen > sizeof(ssl->s3.server_random))
4422 outlen = sizeof(ssl->s3.server_random);
4423 memcpy(out, ssl->s3.server_random, outlen);
4427 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4428 unsigned char *out, size_t outlen)
4431 return session->master_key_length;
4432 if (outlen > session->master_key_length)
4433 outlen = session->master_key_length;
4434 memcpy(out, session->master_key, outlen);
4438 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4441 if (len > sizeof(sess->master_key))
4444 memcpy(sess->master_key, in, len);
4445 sess->master_key_length = len;
4450 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4452 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4455 void *SSL_get_ex_data(const SSL *s, int idx)
4457 return CRYPTO_get_ex_data(&s->ex_data, idx);
4460 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4462 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4465 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4467 return CRYPTO_get_ex_data(&s->ex_data, idx);
4470 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4472 return ctx->cert_store;
4475 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4477 X509_STORE_free(ctx->cert_store);
4478 ctx->cert_store = store;
4481 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4484 X509_STORE_up_ref(store);
4485 SSL_CTX_set_cert_store(ctx, store);
4488 int SSL_want(const SSL *s)
4494 * \brief Set the callback for generating temporary DH keys.
4495 * \param ctx the SSL context.
4496 * \param dh the callback
4499 #ifndef OPENSSL_NO_DH
4500 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4501 DH *(*dh) (SSL *ssl, int is_export,
4504 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4507 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4510 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4514 #ifndef OPENSSL_NO_PSK
4515 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4517 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4518 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4521 OPENSSL_free(ctx->cert->psk_identity_hint);
4522 if (identity_hint != NULL) {
4523 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4524 if (ctx->cert->psk_identity_hint == NULL)
4527 ctx->cert->psk_identity_hint = NULL;
4531 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4536 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4537 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4540 OPENSSL_free(s->cert->psk_identity_hint);
4541 if (identity_hint != NULL) {
4542 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4543 if (s->cert->psk_identity_hint == NULL)
4546 s->cert->psk_identity_hint = NULL;
4550 const char *SSL_get_psk_identity_hint(const SSL *s)
4552 if (s == NULL || s->session == NULL)
4554 return s->session->psk_identity_hint;
4557 const char *SSL_get_psk_identity(const SSL *s)
4559 if (s == NULL || s->session == NULL)
4561 return s->session->psk_identity;
4564 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4566 s->psk_client_callback = cb;
4569 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4571 ctx->psk_client_callback = cb;
4574 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4576 s->psk_server_callback = cb;
4579 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4581 ctx->psk_server_callback = cb;
4585 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4587 s->psk_find_session_cb = cb;
4590 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4591 SSL_psk_find_session_cb_func cb)
4593 ctx->psk_find_session_cb = cb;
4596 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4598 s->psk_use_session_cb = cb;
4601 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4602 SSL_psk_use_session_cb_func cb)
4604 ctx->psk_use_session_cb = cb;
4607 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4608 void (*cb) (int write_p, int version,
4609 int content_type, const void *buf,
4610 size_t len, SSL *ssl, void *arg))
4612 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4615 void SSL_set_msg_callback(SSL *ssl,
4616 void (*cb) (int write_p, int version,
4617 int content_type, const void *buf,
4618 size_t len, SSL *ssl, void *arg))
4620 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4623 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4624 int (*cb) (SSL *ssl,
4628 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4629 (void (*)(void))cb);
4632 void SSL_set_not_resumable_session_callback(SSL *ssl,
4633 int (*cb) (SSL *ssl,
4634 int is_forward_secure))
4636 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4637 (void (*)(void))cb);
4640 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4641 size_t (*cb) (SSL *ssl, int type,
4642 size_t len, void *arg))
4644 ctx->record_padding_cb = cb;
4647 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4649 ctx->record_padding_arg = arg;
4652 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4654 return ctx->record_padding_arg;
4657 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4659 /* block size of 0 or 1 is basically no padding */
4660 if (block_size == 1)
4661 ctx->block_padding = 0;
4662 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4663 ctx->block_padding = block_size;
4669 int SSL_set_record_padding_callback(SSL *ssl,
4670 size_t (*cb) (SSL *ssl, int type,
4671 size_t len, void *arg))
4675 b = SSL_get_wbio(ssl);
4676 if (b == NULL || !BIO_get_ktls_send(b)) {
4677 ssl->record_padding_cb = cb;
4683 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4685 ssl->record_padding_arg = arg;
4688 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4690 return ssl->record_padding_arg;
4693 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4695 /* block size of 0 or 1 is basically no padding */
4696 if (block_size == 1)
4697 ssl->block_padding = 0;
4698 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4699 ssl->block_padding = block_size;
4705 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4707 s->num_tickets = num_tickets;
4712 size_t SSL_get_num_tickets(const SSL *s)
4714 return s->num_tickets;
4717 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4719 ctx->num_tickets = num_tickets;
4724 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4726 return ctx->num_tickets;
4730 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4731 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4732 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4733 * Returns the newly allocated ctx;
4736 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4738 ssl_clear_hash_ctx(hash);
4739 *hash = EVP_MD_CTX_new();
4740 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4741 EVP_MD_CTX_free(*hash);
4748 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4751 EVP_MD_CTX_free(*hash);
4755 /* Retrieve handshake hashes */
4756 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4759 EVP_MD_CTX *ctx = NULL;
4760 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4761 int hashleni = EVP_MD_CTX_size(hdgst);
4764 if (hashleni < 0 || (size_t)hashleni > outlen) {
4765 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4766 ERR_R_INTERNAL_ERROR);
4770 ctx = EVP_MD_CTX_new();
4774 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4775 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4776 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4777 ERR_R_INTERNAL_ERROR);
4781 *hashlen = hashleni;
4785 EVP_MD_CTX_free(ctx);
4789 int SSL_session_reused(const SSL *s)
4794 int SSL_is_server(const SSL *s)
4799 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4800 void SSL_set_debug(SSL *s, int debug)
4802 /* Old function was do-nothing anyway... */
4808 void SSL_set_security_level(SSL *s, int level)
4810 s->cert->sec_level = level;
4813 int SSL_get_security_level(const SSL *s)
4815 return s->cert->sec_level;
4818 void SSL_set_security_callback(SSL *s,
4819 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4820 int op, int bits, int nid,
4821 void *other, void *ex))
4823 s->cert->sec_cb = cb;
4826 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4827 const SSL_CTX *ctx, int op,
4828 int bits, int nid, void *other,
4830 return s->cert->sec_cb;
4833 void SSL_set0_security_ex_data(SSL *s, void *ex)
4835 s->cert->sec_ex = ex;
4838 void *SSL_get0_security_ex_data(const SSL *s)
4840 return s->cert->sec_ex;
4843 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4845 ctx->cert->sec_level = level;
4848 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4850 return ctx->cert->sec_level;
4853 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4854 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4855 int op, int bits, int nid,
4856 void *other, void *ex))
4858 ctx->cert->sec_cb = cb;
4861 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4867 return ctx->cert->sec_cb;
4870 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4872 ctx->cert->sec_ex = ex;
4875 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4877 return ctx->cert->sec_ex;
4881 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4882 * can return unsigned long, instead of the generic long return value from the
4883 * control interface.
4885 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4887 return ctx->options;
4890 unsigned long SSL_get_options(const SSL *s)
4895 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4897 return ctx->options |= op;
4900 unsigned long SSL_set_options(SSL *s, unsigned long op)
4902 return s->options |= op;
4905 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4907 return ctx->options &= ~op;
4910 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4912 return s->options &= ~op;
4915 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4917 return s->verified_chain;
4920 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4922 #ifndef OPENSSL_NO_CT
4925 * Moves SCTs from the |src| stack to the |dst| stack.
4926 * The source of each SCT will be set to |origin|.
4927 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4929 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4931 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4932 sct_source_t origin)
4938 *dst = sk_SCT_new_null();
4940 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4945 while ((sct = sk_SCT_pop(src)) != NULL) {
4946 if (SCT_set_source(sct, origin) != 1)
4949 if (sk_SCT_push(*dst, sct) <= 0)
4957 sk_SCT_push(src, sct); /* Put the SCT back */
4962 * Look for data collected during ServerHello and parse if found.
4963 * Returns the number of SCTs extracted.
4965 static int ct_extract_tls_extension_scts(SSL *s)
4967 int scts_extracted = 0;
4969 if (s->ext.scts != NULL) {
4970 const unsigned char *p = s->ext.scts;
4971 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4973 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4975 SCT_LIST_free(scts);
4978 return scts_extracted;
4982 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4983 * contains an SCT X509 extension. They will be stored in |s->scts|.
4985 * - The number of SCTs extracted, assuming an OCSP response exists.
4986 * - 0 if no OCSP response exists or it contains no SCTs.
4987 * - A negative integer if an error occurs.
4989 static int ct_extract_ocsp_response_scts(SSL *s)
4991 # ifndef OPENSSL_NO_OCSP
4992 int scts_extracted = 0;
4993 const unsigned char *p;
4994 OCSP_BASICRESP *br = NULL;
4995 OCSP_RESPONSE *rsp = NULL;
4996 STACK_OF(SCT) *scts = NULL;
4999 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5002 p = s->ext.ocsp.resp;
5003 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5007 br = OCSP_response_get1_basic(rsp);
5011 for (i = 0; i < OCSP_resp_count(br); ++i) {
5012 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5018 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5020 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5021 if (scts_extracted < 0)
5025 SCT_LIST_free(scts);
5026 OCSP_BASICRESP_free(br);
5027 OCSP_RESPONSE_free(rsp);
5028 return scts_extracted;
5030 /* Behave as if no OCSP response exists */
5036 * Attempts to extract SCTs from the peer certificate.
5037 * Return the number of SCTs extracted, or a negative integer if an error
5040 static int ct_extract_x509v3_extension_scts(SSL *s)
5042 int scts_extracted = 0;
5043 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5046 STACK_OF(SCT) *scts =
5047 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5050 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5052 SCT_LIST_free(scts);
5055 return scts_extracted;
5059 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5060 * response (if it exists) and X509v3 extensions in the certificate.
5061 * Returns NULL if an error occurs.
5063 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5065 if (!s->scts_parsed) {
5066 if (ct_extract_tls_extension_scts(s) < 0 ||
5067 ct_extract_ocsp_response_scts(s) < 0 ||
5068 ct_extract_x509v3_extension_scts(s) < 0)
5078 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5079 const STACK_OF(SCT) *scts, void *unused_arg)
5084 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5085 const STACK_OF(SCT) *scts, void *unused_arg)
5087 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5090 for (i = 0; i < count; ++i) {
5091 SCT *sct = sk_SCT_value(scts, i);
5092 int status = SCT_get_validation_status(sct);
5094 if (status == SCT_VALIDATION_STATUS_VALID)
5097 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5101 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5105 * Since code exists that uses the custom extension handler for CT, look
5106 * for this and throw an error if they have already registered to use CT.
5108 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5109 TLSEXT_TYPE_signed_certificate_timestamp))
5111 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5112 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5116 if (callback != NULL) {
5118 * If we are validating CT, then we MUST accept SCTs served via OCSP
5120 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5124 s->ct_validation_callback = callback;
5125 s->ct_validation_callback_arg = arg;
5130 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5131 ssl_ct_validation_cb callback, void *arg)
5134 * Since code exists that uses the custom extension handler for CT, look for
5135 * this and throw an error if they have already registered to use CT.
5137 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5138 TLSEXT_TYPE_signed_certificate_timestamp))
5140 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5141 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5145 ctx->ct_validation_callback = callback;
5146 ctx->ct_validation_callback_arg = arg;
5150 int SSL_ct_is_enabled(const SSL *s)
5152 return s->ct_validation_callback != NULL;
5155 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5157 return ctx->ct_validation_callback != NULL;
5160 int ssl_validate_ct(SSL *s)
5163 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5165 SSL_DANE *dane = &s->dane;
5166 CT_POLICY_EVAL_CTX *ctx = NULL;
5167 const STACK_OF(SCT) *scts;
5170 * If no callback is set, the peer is anonymous, or its chain is invalid,
5171 * skip SCT validation - just return success. Applications that continue
5172 * handshakes without certificates, with unverified chains, or pinned leaf
5173 * certificates are outside the scope of the WebPKI and CT.
5175 * The above exclusions notwithstanding the vast majority of peers will
5176 * have rather ordinary certificate chains validated by typical
5177 * applications that perform certificate verification and therefore will
5178 * process SCTs when enabled.
5180 if (s->ct_validation_callback == NULL || cert == NULL ||
5181 s->verify_result != X509_V_OK ||
5182 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5186 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5187 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5189 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5190 switch (dane->mtlsa->usage) {
5191 case DANETLS_USAGE_DANE_TA:
5192 case DANETLS_USAGE_DANE_EE:
5197 ctx = CT_POLICY_EVAL_CTX_new_ex(s->ctx->libctx, s->ctx->propq);
5199 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5200 ERR_R_MALLOC_FAILURE);
5204 issuer = sk_X509_value(s->verified_chain, 1);
5205 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5206 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5207 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5208 CT_POLICY_EVAL_CTX_set_time(
5209 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5211 scts = SSL_get0_peer_scts(s);
5214 * This function returns success (> 0) only when all the SCTs are valid, 0
5215 * when some are invalid, and < 0 on various internal errors (out of
5216 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5217 * reason to abort the handshake, that decision is up to the callback.
5218 * Therefore, we error out only in the unexpected case that the return
5219 * value is negative.
5221 * XXX: One might well argue that the return value of this function is an
5222 * unfortunate design choice. Its job is only to determine the validation
5223 * status of each of the provided SCTs. So long as it correctly separates
5224 * the wheat from the chaff it should return success. Failure in this case
5225 * ought to correspond to an inability to carry out its duties.
5227 if (SCT_LIST_validate(scts, ctx) < 0) {
5228 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5229 SSL_R_SCT_VERIFICATION_FAILED);
5233 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5235 ret = 0; /* This function returns 0 on failure */
5237 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5238 SSL_R_CALLBACK_FAILED);
5241 CT_POLICY_EVAL_CTX_free(ctx);
5243 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5244 * failure return code here. Also the application may wish the complete
5245 * the handshake, and then disconnect cleanly at a higher layer, after
5246 * checking the verification status of the completed connection.
5248 * We therefore force a certificate verification failure which will be
5249 * visible via SSL_get_verify_result() and cached as part of any resumed
5252 * Note: the permissive callback is for information gathering only, always
5253 * returns success, and does not affect verification status. Only the
5254 * strict callback or a custom application-specified callback can trigger
5255 * connection failure or record a verification error.
5258 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5262 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5264 switch (validation_mode) {
5266 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5268 case SSL_CT_VALIDATION_PERMISSIVE:
5269 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5270 case SSL_CT_VALIDATION_STRICT:
5271 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5275 int SSL_enable_ct(SSL *s, int validation_mode)
5277 switch (validation_mode) {
5279 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5281 case SSL_CT_VALIDATION_PERMISSIVE:
5282 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5283 case SSL_CT_VALIDATION_STRICT:
5284 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5288 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5290 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5293 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5295 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5298 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5300 CTLOG_STORE_free(ctx->ctlog_store);
5301 ctx->ctlog_store = logs;
5304 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5306 return ctx->ctlog_store;
5309 #endif /* OPENSSL_NO_CT */
5311 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5314 c->client_hello_cb = cb;
5315 c->client_hello_cb_arg = arg;
5318 int SSL_client_hello_isv2(SSL *s)
5320 if (s->clienthello == NULL)
5322 return s->clienthello->isv2;
5325 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5327 if (s->clienthello == NULL)
5329 return s->clienthello->legacy_version;
5332 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5334 if (s->clienthello == NULL)
5337 *out = s->clienthello->random;
5338 return SSL3_RANDOM_SIZE;
5341 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5343 if (s->clienthello == NULL)
5346 *out = s->clienthello->session_id;
5347 return s->clienthello->session_id_len;
5350 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5352 if (s->clienthello == NULL)
5355 *out = PACKET_data(&s->clienthello->ciphersuites);
5356 return PACKET_remaining(&s->clienthello->ciphersuites);
5359 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5361 if (s->clienthello == NULL)
5364 *out = s->clienthello->compressions;
5365 return s->clienthello->compressions_len;
5368 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5374 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5376 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5377 ext = s->clienthello->pre_proc_exts + i;
5386 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5387 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5388 ERR_R_MALLOC_FAILURE);
5391 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5392 ext = s->clienthello->pre_proc_exts + i;
5394 if (ext->received_order >= num)
5396 present[ext->received_order] = ext->type;
5403 OPENSSL_free(present);
5407 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5413 if (s->clienthello == NULL)
5415 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5416 r = s->clienthello->pre_proc_exts + i;
5417 if (r->present && r->type == type) {
5419 *out = PACKET_data(&r->data);
5421 *outlen = PACKET_remaining(&r->data);
5428 int SSL_free_buffers(SSL *ssl)
5430 RECORD_LAYER *rl = &ssl->rlayer;
5432 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5435 RECORD_LAYER_release(rl);
5439 int SSL_alloc_buffers(SSL *ssl)
5441 return ssl3_setup_buffers(ssl);
5444 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5446 ctx->keylog_callback = cb;
5449 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5451 return ctx->keylog_callback;
5454 static int nss_keylog_int(const char *prefix,
5456 const uint8_t *parameter_1,
5457 size_t parameter_1_len,
5458 const uint8_t *parameter_2,
5459 size_t parameter_2_len)
5462 char *cursor = NULL;
5467 if (ssl->ctx->keylog_callback == NULL)
5471 * Our output buffer will contain the following strings, rendered with
5472 * space characters in between, terminated by a NULL character: first the
5473 * prefix, then the first parameter, then the second parameter. The
5474 * meaning of each parameter depends on the specific key material being
5475 * logged. Note that the first and second parameters are encoded in
5476 * hexadecimal, so we need a buffer that is twice their lengths.
5478 prefix_len = strlen(prefix);
5479 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5480 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5481 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5482 ERR_R_MALLOC_FAILURE);
5486 strcpy(cursor, prefix);
5487 cursor += prefix_len;
5490 for (i = 0; i < parameter_1_len; i++) {
5491 sprintf(cursor, "%02x", parameter_1[i]);
5496 for (i = 0; i < parameter_2_len; i++) {
5497 sprintf(cursor, "%02x", parameter_2[i]);
5502 ssl->ctx->keylog_callback(ssl, (const char *)out);
5503 OPENSSL_clear_free(out, out_len);
5508 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5509 const uint8_t *encrypted_premaster,
5510 size_t encrypted_premaster_len,
5511 const uint8_t *premaster,
5512 size_t premaster_len)
5514 if (encrypted_premaster_len < 8) {
5515 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5516 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5520 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5521 return nss_keylog_int("RSA",
5523 encrypted_premaster,
5529 int ssl_log_secret(SSL *ssl,
5531 const uint8_t *secret,
5534 return nss_keylog_int(label,
5536 ssl->s3.client_random,
5542 #define SSLV2_CIPHER_LEN 3
5544 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5548 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5550 if (PACKET_remaining(cipher_suites) == 0) {
5551 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5552 SSL_R_NO_CIPHERS_SPECIFIED);
5556 if (PACKET_remaining(cipher_suites) % n != 0) {
5557 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5558 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5562 OPENSSL_free(s->s3.tmp.ciphers_raw);
5563 s->s3.tmp.ciphers_raw = NULL;
5564 s->s3.tmp.ciphers_rawlen = 0;
5567 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5568 PACKET sslv2ciphers = *cipher_suites;
5569 unsigned int leadbyte;
5573 * We store the raw ciphers list in SSLv3+ format so we need to do some
5574 * preprocessing to convert the list first. If there are any SSLv2 only
5575 * ciphersuites with a non-zero leading byte then we are going to
5576 * slightly over allocate because we won't store those. But that isn't a
5579 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5580 s->s3.tmp.ciphers_raw = raw;
5582 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5583 ERR_R_MALLOC_FAILURE);
5586 for (s->s3.tmp.ciphers_rawlen = 0;
5587 PACKET_remaining(&sslv2ciphers) > 0;
5588 raw += TLS_CIPHER_LEN) {
5589 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5591 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5594 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5595 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5597 OPENSSL_free(s->s3.tmp.ciphers_raw);
5598 s->s3.tmp.ciphers_raw = NULL;
5599 s->s3.tmp.ciphers_rawlen = 0;
5603 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5605 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5606 &s->s3.tmp.ciphers_rawlen)) {
5607 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5608 ERR_R_INTERNAL_ERROR);
5614 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5615 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5616 STACK_OF(SSL_CIPHER) **scsvs)
5620 if (!PACKET_buf_init(&pkt, bytes, len))
5622 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5625 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5626 STACK_OF(SSL_CIPHER) **skp,
5627 STACK_OF(SSL_CIPHER) **scsvs_out,
5628 int sslv2format, int fatal)
5630 const SSL_CIPHER *c;
5631 STACK_OF(SSL_CIPHER) *sk = NULL;
5632 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5634 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5635 unsigned char cipher[SSLV2_CIPHER_LEN];
5637 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5639 if (PACKET_remaining(cipher_suites) == 0) {
5641 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5642 SSL_R_NO_CIPHERS_SPECIFIED);
5644 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5648 if (PACKET_remaining(cipher_suites) % n != 0) {
5650 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5651 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5653 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5654 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5658 sk = sk_SSL_CIPHER_new_null();
5659 scsvs = sk_SSL_CIPHER_new_null();
5660 if (sk == NULL || scsvs == NULL) {
5662 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5663 ERR_R_MALLOC_FAILURE);
5665 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5669 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5671 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5672 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5673 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5675 if (sslv2format && cipher[0] != '\0')
5678 /* For SSLv2-compat, ignore leading 0-byte. */
5679 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5681 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5682 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5684 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5685 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5687 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5692 if (PACKET_remaining(cipher_suites) > 0) {
5694 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5697 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5704 sk_SSL_CIPHER_free(sk);
5705 if (scsvs_out != NULL)
5708 sk_SSL_CIPHER_free(scsvs);
5711 sk_SSL_CIPHER_free(sk);
5712 sk_SSL_CIPHER_free(scsvs);
5716 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5718 ctx->max_early_data = max_early_data;
5723 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5725 return ctx->max_early_data;
5728 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5730 s->max_early_data = max_early_data;
5735 uint32_t SSL_get_max_early_data(const SSL *s)
5737 return s->max_early_data;
5740 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5742 ctx->recv_max_early_data = recv_max_early_data;
5747 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5749 return ctx->recv_max_early_data;
5752 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5754 s->recv_max_early_data = recv_max_early_data;
5759 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5761 return s->recv_max_early_data;
5764 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5766 /* Return any active Max Fragment Len extension */
5767 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5768 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5770 /* return current SSL connection setting */
5771 return ssl->max_send_fragment;
5774 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5776 /* Return a value regarding an active Max Fragment Len extension */
5777 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5778 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5779 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5781 /* else limit |split_send_fragment| to current |max_send_fragment| */
5782 if (ssl->split_send_fragment > ssl->max_send_fragment)
5783 return ssl->max_send_fragment;
5785 /* return current SSL connection setting */
5786 return ssl->split_send_fragment;
5789 int SSL_stateless(SSL *s)
5793 /* Ensure there is no state left over from a previous invocation */
5799 s->s3.flags |= TLS1_FLAGS_STATELESS;
5800 ret = SSL_accept(s);
5801 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5803 if (ret > 0 && s->ext.cookieok)
5806 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5812 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5814 ctx->pha_enabled = val;
5817 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5819 ssl->pha_enabled = val;
5822 int SSL_verify_client_post_handshake(SSL *ssl)
5824 if (!SSL_IS_TLS13(ssl)) {
5825 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5829 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5833 if (!SSL_is_init_finished(ssl)) {
5834 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5838 switch (ssl->post_handshake_auth) {
5840 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5843 case SSL_PHA_EXT_SENT:
5844 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5846 case SSL_PHA_EXT_RECEIVED:
5848 case SSL_PHA_REQUEST_PENDING:
5849 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5851 case SSL_PHA_REQUESTED:
5852 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5856 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5858 /* checks verify_mode and algorithm_auth */
5859 if (!send_certificate_request(ssl)) {
5860 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5861 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5865 ossl_statem_set_in_init(ssl, 1);
5869 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5870 SSL_CTX_generate_session_ticket_fn gen_cb,
5871 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5874 ctx->generate_ticket_cb = gen_cb;
5875 ctx->decrypt_ticket_cb = dec_cb;
5876 ctx->ticket_cb_data = arg;
5880 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5881 SSL_allow_early_data_cb_fn cb,
5884 ctx->allow_early_data_cb = cb;
5885 ctx->allow_early_data_cb_data = arg;
5888 void SSL_set_allow_early_data_cb(SSL *s,
5889 SSL_allow_early_data_cb_fn cb,
5892 s->allow_early_data_cb = cb;
5893 s->allow_early_data_cb_data = arg;
5896 const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5898 const char *properties)
5902 #ifndef OPENSSL_NO_ENGINE
5906 * If there is an Engine available for this cipher we use the "implicit"
5907 * form to ensure we use that engine later.
5909 eng = ENGINE_get_cipher_engine(nid);
5912 return EVP_get_cipherbynid(nid);
5916 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5918 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5924 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5926 /* Don't up-ref an implicit EVP_CIPHER */
5927 if (EVP_CIPHER_provider(cipher) == NULL)
5931 * The cipher was explicitly fetched and therefore it is safe to cast
5934 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5937 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5942 if (EVP_CIPHER_provider(cipher) != NULL) {
5944 * The cipher was explicitly fetched and therefore it is safe to cast
5947 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5951 const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5953 const char *properties)
5957 #ifndef OPENSSL_NO_ENGINE
5961 * If there is an Engine available for this digest we use the "implicit"
5962 * form to ensure we use that engine later.
5964 eng = ENGINE_get_digest_engine(nid);
5967 return EVP_get_digestbynid(nid);
5971 /* Otherwise we do an explicit fetch */
5973 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5978 int ssl_evp_md_up_ref(const EVP_MD *md)
5980 /* Don't up-ref an implicit EVP_MD */
5981 if (EVP_MD_provider(md) == NULL)
5985 * The digest was explicitly fetched and therefore it is safe to cast
5988 return EVP_MD_up_ref((EVP_MD *)md);
5991 void ssl_evp_md_free(const EVP_MD *md)
5996 if (EVP_MD_provider(md) != NULL) {
5998 * The digest was explicitly fetched and therefore it is safe to cast
6001 EVP_MD_free((EVP_MD *)md);