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
13 #include "ssl_local.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/rand_drbg.h>
19 #include <openssl/ocsp.h>
20 #include <openssl/dh.h>
21 #include <openssl/engine.h>
22 #include <openssl/async.h>
23 #include <openssl/ct.h>
24 #include <openssl/trace.h>
25 #include "internal/cryptlib.h"
26 #include "internal/refcount.h"
27 #include "internal/ktls.h"
30 DEFINE_STACK_OF(X509_NAME)
31 DEFINE_STACK_OF_CONST(SSL_CIPHER)
32 DEFINE_STACK_OF(X509_EXTENSION)
33 DEFINE_STACK_OF(OCSP_RESPID)
34 DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
37 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
42 return ssl_undefined_function(ssl);
45 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
51 return ssl_undefined_function(ssl);
54 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
55 unsigned char *s, size_t t, size_t *u)
61 return ssl_undefined_function(ssl);
64 static int ssl_undefined_function_4(SSL *ssl, int r)
67 return ssl_undefined_function(ssl);
70 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
76 return ssl_undefined_function(ssl);
79 static int ssl_undefined_function_6(int r)
82 return ssl_undefined_function(NULL);
85 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
86 const char *t, size_t u,
87 const unsigned char *v, size_t w, int x)
96 return ssl_undefined_function(ssl);
99 SSL3_ENC_METHOD ssl3_undef_enc_method = {
100 ssl_undefined_function_1,
101 ssl_undefined_function_2,
102 ssl_undefined_function,
103 ssl_undefined_function_3,
104 ssl_undefined_function_4,
105 ssl_undefined_function_5,
106 NULL, /* client_finished_label */
107 0, /* client_finished_label_len */
108 NULL, /* server_finished_label */
109 0, /* server_finished_label_len */
110 ssl_undefined_function_6,
111 ssl_undefined_function_7,
114 struct ssl_async_args {
118 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
120 int (*func_read) (SSL *, void *, size_t, size_t *);
121 int (*func_write) (SSL *, const void *, size_t, size_t *);
122 int (*func_other) (SSL *);
126 static const struct {
132 DANETLS_MATCHING_FULL, 0, NID_undef
135 DANETLS_MATCHING_2256, 1, NID_sha256
138 DANETLS_MATCHING_2512, 2, NID_sha512
142 static int dane_ctx_enable(struct dane_ctx_st *dctx)
144 const EVP_MD **mdevp;
146 uint8_t mdmax = DANETLS_MATCHING_LAST;
147 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
150 if (dctx->mdevp != NULL)
153 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
154 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
156 if (mdord == NULL || mdevp == NULL) {
159 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
163 /* Install default entries */
164 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
167 if (dane_mds[i].nid == NID_undef ||
168 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
170 mdevp[dane_mds[i].mtype] = md;
171 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
181 static void dane_ctx_final(struct dane_ctx_st *dctx)
183 OPENSSL_free(dctx->mdevp);
186 OPENSSL_free(dctx->mdord);
191 static void tlsa_free(danetls_record *t)
195 OPENSSL_free(t->data);
196 EVP_PKEY_free(t->spki);
200 static void dane_final(SSL_DANE *dane)
202 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
205 sk_X509_pop_free(dane->certs, X509_free);
208 X509_free(dane->mcert);
216 * dane_copy - Copy dane configuration, sans verification state.
218 static int ssl_dane_dup(SSL *to, SSL *from)
223 if (!DANETLS_ENABLED(&from->dane))
226 num = sk_danetls_record_num(from->dane.trecs);
227 dane_final(&to->dane);
228 to->dane.flags = from->dane.flags;
229 to->dane.dctx = &to->ctx->dane;
230 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
232 if (to->dane.trecs == NULL) {
233 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
237 for (i = 0; i < num; ++i) {
238 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
240 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
241 t->data, t->dlen) <= 0)
247 static int dane_mtype_set(struct dane_ctx_st *dctx,
248 const EVP_MD *md, uint8_t mtype, uint8_t ord)
252 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
253 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
257 if (mtype > dctx->mdmax) {
258 const EVP_MD **mdevp;
260 int n = ((int)mtype) + 1;
262 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
264 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
269 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
271 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
276 /* Zero-fill any gaps */
277 for (i = dctx->mdmax + 1; i < mtype; ++i) {
285 dctx->mdevp[mtype] = md;
286 /* Coerce ordinal of disabled matching types to 0 */
287 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
292 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
294 if (mtype > dane->dctx->mdmax)
296 return dane->dctx->mdevp[mtype];
299 static int dane_tlsa_add(SSL_DANE *dane,
302 uint8_t mtype, unsigned const char *data, size_t dlen)
305 const EVP_MD *md = NULL;
306 int ilen = (int)dlen;
310 if (dane->trecs == NULL) {
311 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
315 if (ilen < 0 || dlen != (size_t)ilen) {
316 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
320 if (usage > DANETLS_USAGE_LAST) {
321 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
325 if (selector > DANETLS_SELECTOR_LAST) {
326 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
330 if (mtype != DANETLS_MATCHING_FULL) {
331 md = tlsa_md_get(dane, mtype);
333 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
338 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
339 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
343 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
347 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
348 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
353 t->selector = selector;
355 t->data = OPENSSL_malloc(dlen);
356 if (t->data == NULL) {
358 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
361 memcpy(t->data, data, dlen);
364 /* Validate and cache full certificate or public key */
365 if (mtype == DANETLS_MATCHING_FULL) {
366 const unsigned char *p = data;
368 EVP_PKEY *pkey = NULL;
371 case DANETLS_SELECTOR_CERT:
372 if (!d2i_X509(&cert, &p, ilen) || p < data ||
373 dlen != (size_t)(p - data)) {
375 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
378 if (X509_get0_pubkey(cert) == NULL) {
380 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
384 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
390 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
391 * records that contain full certificates of trust-anchors that are
392 * not present in the wire chain. For usage PKIX-TA(0), we augment
393 * the chain with untrusted Full(0) certificates from DNS, in case
394 * they are missing from the chain.
396 if ((dane->certs == NULL &&
397 (dane->certs = sk_X509_new_null()) == NULL) ||
398 !sk_X509_push(dane->certs, cert)) {
399 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
406 case DANETLS_SELECTOR_SPKI:
407 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
408 dlen != (size_t)(p - data)) {
410 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
415 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
416 * records that contain full bare keys of trust-anchors that are
417 * not present in the wire chain.
419 if (usage == DANETLS_USAGE_DANE_TA)
428 * Find the right insertion point for the new record.
430 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
431 * they can be processed first, as they require no chain building, and no
432 * expiration or hostname checks. Because DANE-EE(3) is numerically
433 * largest, this is accomplished via descending sort by "usage".
435 * We also sort in descending order by matching ordinal to simplify
436 * the implementation of digest agility in the verification code.
438 * The choice of order for the selector is not significant, so we
439 * use the same descending order for consistency.
441 num = sk_danetls_record_num(dane->trecs);
442 for (i = 0; i < num; ++i) {
443 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
445 if (rec->usage > usage)
447 if (rec->usage < usage)
449 if (rec->selector > selector)
451 if (rec->selector < selector)
453 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
458 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
460 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
463 dane->umask |= DANETLS_USAGE_BIT(usage);
469 * Return 0 if there is only one version configured and it was disabled
470 * at configure time. Return 1 otherwise.
472 static int ssl_check_allowed_versions(int min_version, int max_version)
474 int minisdtls = 0, maxisdtls = 0;
476 /* Figure out if we're doing DTLS versions or TLS versions */
477 if (min_version == DTLS1_BAD_VER
478 || min_version >> 8 == DTLS1_VERSION_MAJOR)
480 if (max_version == DTLS1_BAD_VER
481 || max_version >> 8 == DTLS1_VERSION_MAJOR)
483 /* A wildcard version of 0 could be DTLS or TLS. */
484 if ((minisdtls && !maxisdtls && max_version != 0)
485 || (maxisdtls && !minisdtls && min_version != 0)) {
486 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
490 if (minisdtls || maxisdtls) {
491 /* Do DTLS version checks. */
492 if (min_version == 0)
493 /* Ignore DTLS1_BAD_VER */
494 min_version = DTLS1_VERSION;
495 if (max_version == 0)
496 max_version = DTLS1_2_VERSION;
497 #ifdef OPENSSL_NO_DTLS1_2
498 if (max_version == DTLS1_2_VERSION)
499 max_version = DTLS1_VERSION;
501 #ifdef OPENSSL_NO_DTLS1
502 if (min_version == DTLS1_VERSION)
503 min_version = DTLS1_2_VERSION;
505 /* Done massaging versions; do the check. */
507 #ifdef OPENSSL_NO_DTLS1
508 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
509 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
511 #ifdef OPENSSL_NO_DTLS1_2
512 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
513 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
518 /* Regular TLS version checks. */
519 if (min_version == 0)
520 min_version = SSL3_VERSION;
521 if (max_version == 0)
522 max_version = TLS1_3_VERSION;
523 #ifdef OPENSSL_NO_TLS1_3
524 if (max_version == TLS1_3_VERSION)
525 max_version = TLS1_2_VERSION;
527 #ifdef OPENSSL_NO_TLS1_2
528 if (max_version == TLS1_2_VERSION)
529 max_version = TLS1_1_VERSION;
531 #ifdef OPENSSL_NO_TLS1_1
532 if (max_version == TLS1_1_VERSION)
533 max_version = TLS1_VERSION;
535 #ifdef OPENSSL_NO_TLS1
536 if (max_version == TLS1_VERSION)
537 max_version = SSL3_VERSION;
539 #ifdef OPENSSL_NO_SSL3
540 if (min_version == SSL3_VERSION)
541 min_version = TLS1_VERSION;
543 #ifdef OPENSSL_NO_TLS1
544 if (min_version == TLS1_VERSION)
545 min_version = TLS1_1_VERSION;
547 #ifdef OPENSSL_NO_TLS1_1
548 if (min_version == TLS1_1_VERSION)
549 min_version = TLS1_2_VERSION;
551 #ifdef OPENSSL_NO_TLS1_2
552 if (min_version == TLS1_2_VERSION)
553 min_version = TLS1_3_VERSION;
555 /* Done massaging versions; do the check. */
557 #ifdef OPENSSL_NO_SSL3
558 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
560 #ifdef OPENSSL_NO_TLS1
561 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
563 #ifdef OPENSSL_NO_TLS1_1
564 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
566 #ifdef OPENSSL_NO_TLS1_2
567 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
569 #ifdef OPENSSL_NO_TLS1_3
570 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
578 static void clear_ciphers(SSL *s)
580 /* clear the current cipher */
581 ssl_clear_cipher_ctx(s);
582 ssl_clear_hash_ctx(&s->read_hash);
583 ssl_clear_hash_ctx(&s->write_hash);
586 int SSL_clear(SSL *s)
588 if (s->method == NULL) {
589 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
593 if (ssl_clear_bad_session(s)) {
594 SSL_SESSION_free(s->session);
597 SSL_SESSION_free(s->psksession);
598 s->psksession = NULL;
599 OPENSSL_free(s->psksession_id);
600 s->psksession_id = NULL;
601 s->psksession_id_len = 0;
602 s->hello_retry_request = 0;
609 if (s->renegotiate) {
610 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
614 ossl_statem_clear(s);
616 s->version = s->method->version;
617 s->client_version = s->version;
618 s->rwstate = SSL_NOTHING;
620 BUF_MEM_free(s->init_buf);
625 s->key_update = SSL_KEY_UPDATE_NONE;
627 EVP_MD_CTX_free(s->pha_dgst);
630 /* Reset DANE verification result state */
633 X509_free(s->dane.mcert);
634 s->dane.mcert = NULL;
635 s->dane.mtlsa = NULL;
637 /* Clear the verification result peername */
638 X509_VERIFY_PARAM_move_peername(s->param, NULL);
640 /* Clear any shared connection state */
641 OPENSSL_free(s->shared_sigalgs);
642 s->shared_sigalgs = NULL;
643 s->shared_sigalgslen = 0;
646 * Check to see if we were changed into a different method, if so, revert
649 if (s->method != s->ctx->method) {
650 s->method->ssl_free(s);
651 s->method = s->ctx->method;
652 if (!s->method->ssl_new(s))
655 if (!s->method->ssl_clear(s))
659 RECORD_LAYER_clear(&s->rlayer);
664 /** Used to change an SSL_CTXs default SSL method type */
665 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
667 STACK_OF(SSL_CIPHER) *sk;
671 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
672 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
675 sk = ssl_create_cipher_list(ctx->method,
676 ctx->tls13_ciphersuites,
678 &(ctx->cipher_list_by_id),
679 OSSL_default_cipher_list(), ctx->cert);
680 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
681 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
687 SSL *SSL_new(SSL_CTX *ctx)
692 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
695 if (ctx->method == NULL) {
696 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
700 s = OPENSSL_zalloc(sizeof(*s));
705 s->lock = CRYPTO_THREAD_lock_new();
706 if (s->lock == NULL) {
712 RECORD_LAYER_init(&s->rlayer, s);
714 s->options = ctx->options;
715 s->dane.flags = ctx->dane.flags;
716 s->min_proto_version = ctx->min_proto_version;
717 s->max_proto_version = ctx->max_proto_version;
719 s->max_cert_list = ctx->max_cert_list;
720 s->max_early_data = ctx->max_early_data;
721 s->recv_max_early_data = ctx->recv_max_early_data;
722 s->num_tickets = ctx->num_tickets;
723 s->pha_enabled = ctx->pha_enabled;
725 /* Shallow copy of the ciphersuites stack */
726 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
727 if (s->tls13_ciphersuites == NULL)
731 * Earlier library versions used to copy the pointer to the CERT, not
732 * its contents; only when setting new parameters for the per-SSL
733 * copy, ssl_cert_new would be called (and the direct reference to
734 * the per-SSL_CTX settings would be lost, but those still were
735 * indirectly accessed for various purposes, and for that reason they
736 * used to be known as s->ctx->default_cert). Now we don't look at the
737 * SSL_CTX's CERT after having duplicated it once.
739 s->cert = ssl_cert_dup(ctx->cert);
743 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
744 s->msg_callback = ctx->msg_callback;
745 s->msg_callback_arg = ctx->msg_callback_arg;
746 s->verify_mode = ctx->verify_mode;
747 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
748 s->record_padding_cb = ctx->record_padding_cb;
749 s->record_padding_arg = ctx->record_padding_arg;
750 s->block_padding = ctx->block_padding;
751 s->sid_ctx_length = ctx->sid_ctx_length;
752 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
754 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
755 s->verify_callback = ctx->default_verify_callback;
756 s->generate_session_id = ctx->generate_session_id;
758 s->param = X509_VERIFY_PARAM_new();
759 if (s->param == NULL)
761 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
762 s->quiet_shutdown = ctx->quiet_shutdown;
764 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
765 s->max_send_fragment = ctx->max_send_fragment;
766 s->split_send_fragment = ctx->split_send_fragment;
767 s->max_pipelines = ctx->max_pipelines;
768 if (s->max_pipelines > 1)
769 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
770 if (ctx->default_read_buf_len > 0)
771 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
776 s->ext.debug_arg = NULL;
777 s->ext.ticket_expected = 0;
778 s->ext.status_type = ctx->ext.status_type;
779 s->ext.status_expected = 0;
780 s->ext.ocsp.ids = NULL;
781 s->ext.ocsp.exts = NULL;
782 s->ext.ocsp.resp = NULL;
783 s->ext.ocsp.resp_len = 0;
785 s->session_ctx = ctx;
786 #ifndef OPENSSL_NO_EC
787 if (ctx->ext.ecpointformats) {
788 s->ext.ecpointformats =
789 OPENSSL_memdup(ctx->ext.ecpointformats,
790 ctx->ext.ecpointformats_len);
791 if (!s->ext.ecpointformats)
793 s->ext.ecpointformats_len =
794 ctx->ext.ecpointformats_len;
797 if (ctx->ext.supportedgroups) {
798 s->ext.supportedgroups =
799 OPENSSL_memdup(ctx->ext.supportedgroups,
800 ctx->ext.supportedgroups_len
801 * sizeof(*ctx->ext.supportedgroups));
802 if (!s->ext.supportedgroups)
804 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
807 #ifndef OPENSSL_NO_NEXTPROTONEG
811 if (s->ctx->ext.alpn) {
812 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
813 if (s->ext.alpn == NULL)
815 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
816 s->ext.alpn_len = s->ctx->ext.alpn_len;
819 s->verified_chain = NULL;
820 s->verify_result = X509_V_OK;
822 s->default_passwd_callback = ctx->default_passwd_callback;
823 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
825 s->method = ctx->method;
827 s->key_update = SSL_KEY_UPDATE_NONE;
829 s->allow_early_data_cb = ctx->allow_early_data_cb;
830 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
832 if (!s->method->ssl_new(s))
835 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
840 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
843 #ifndef OPENSSL_NO_PSK
844 s->psk_client_callback = ctx->psk_client_callback;
845 s->psk_server_callback = ctx->psk_server_callback;
847 s->psk_find_session_cb = ctx->psk_find_session_cb;
848 s->psk_use_session_cb = ctx->psk_use_session_cb;
850 s->async_cb = ctx->async_cb;
851 s->async_cb_arg = ctx->async_cb_arg;
855 #ifndef OPENSSL_NO_CT
856 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
857 ctx->ct_validation_callback_arg))
864 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
868 int SSL_is_dtls(const SSL *s)
870 return SSL_IS_DTLS(s) ? 1 : 0;
873 int SSL_up_ref(SSL *s)
877 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
880 REF_PRINT_COUNT("SSL", s);
881 REF_ASSERT_ISNT(i < 2);
882 return ((i > 1) ? 1 : 0);
885 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
886 unsigned int sid_ctx_len)
888 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
889 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
890 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
893 ctx->sid_ctx_length = sid_ctx_len;
894 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
899 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
900 unsigned int sid_ctx_len)
902 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
903 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
904 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
907 ssl->sid_ctx_length = sid_ctx_len;
908 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
913 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
915 CRYPTO_THREAD_write_lock(ctx->lock);
916 ctx->generate_session_id = cb;
917 CRYPTO_THREAD_unlock(ctx->lock);
921 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
923 CRYPTO_THREAD_write_lock(ssl->lock);
924 ssl->generate_session_id = cb;
925 CRYPTO_THREAD_unlock(ssl->lock);
929 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
933 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
934 * we can "construct" a session to give us the desired check - i.e. to
935 * find if there's a session in the hash table that would conflict with
936 * any new session built out of this id/id_len and the ssl_version in use
941 if (id_len > sizeof(r.session_id))
944 r.ssl_version = ssl->version;
945 r.session_id_length = id_len;
946 memcpy(r.session_id, id, id_len);
948 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
949 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
950 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
954 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
956 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
959 int SSL_set_purpose(SSL *s, int purpose)
961 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
964 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
966 return X509_VERIFY_PARAM_set_trust(s->param, trust);
969 int SSL_set_trust(SSL *s, int trust)
971 return X509_VERIFY_PARAM_set_trust(s->param, trust);
974 int SSL_set1_host(SSL *s, const char *hostname)
976 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
979 int SSL_add1_host(SSL *s, const char *hostname)
981 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
984 void SSL_set_hostflags(SSL *s, unsigned int flags)
986 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
989 const char *SSL_get0_peername(SSL *s)
991 return X509_VERIFY_PARAM_get0_peername(s->param);
994 int SSL_CTX_dane_enable(SSL_CTX *ctx)
996 return dane_ctx_enable(&ctx->dane);
999 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1001 unsigned long orig = ctx->dane.flags;
1003 ctx->dane.flags |= flags;
1007 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1009 unsigned long orig = ctx->dane.flags;
1011 ctx->dane.flags &= ~flags;
1015 int SSL_dane_enable(SSL *s, const char *basedomain)
1017 SSL_DANE *dane = &s->dane;
1019 if (s->ctx->dane.mdmax == 0) {
1020 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1023 if (dane->trecs != NULL) {
1024 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1029 * Default SNI name. This rejects empty names, while set1_host below
1030 * accepts them and disables host name checks. To avoid side-effects with
1031 * invalid input, set the SNI name first.
1033 if (s->ext.hostname == NULL) {
1034 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1035 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1040 /* Primary RFC6125 reference identifier */
1041 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1042 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1048 dane->dctx = &s->ctx->dane;
1049 dane->trecs = sk_danetls_record_new_null();
1051 if (dane->trecs == NULL) {
1052 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1058 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1060 unsigned long orig = ssl->dane.flags;
1062 ssl->dane.flags |= flags;
1066 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1068 unsigned long orig = ssl->dane.flags;
1070 ssl->dane.flags &= ~flags;
1074 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1076 SSL_DANE *dane = &s->dane;
1078 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1082 *mcert = dane->mcert;
1084 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1089 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1090 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1092 SSL_DANE *dane = &s->dane;
1094 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1098 *usage = dane->mtlsa->usage;
1100 *selector = dane->mtlsa->selector;
1102 *mtype = dane->mtlsa->mtype;
1104 *data = dane->mtlsa->data;
1106 *dlen = dane->mtlsa->dlen;
1111 SSL_DANE *SSL_get0_dane(SSL *s)
1116 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1117 uint8_t mtype, unsigned const char *data, size_t dlen)
1119 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1122 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1125 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1128 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1130 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1133 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1135 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1138 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1143 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1148 void SSL_certs_clear(SSL *s)
1150 ssl_cert_clear_certs(s->cert);
1153 void SSL_free(SSL *s)
1159 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1160 REF_PRINT_COUNT("SSL", s);
1163 REF_ASSERT_ISNT(i < 0);
1165 X509_VERIFY_PARAM_free(s->param);
1166 dane_final(&s->dane);
1167 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1169 RECORD_LAYER_release(&s->rlayer);
1171 /* Ignore return value */
1172 ssl_free_wbio_buffer(s);
1174 BIO_free_all(s->wbio);
1176 BIO_free_all(s->rbio);
1179 BUF_MEM_free(s->init_buf);
1181 /* add extra stuff */
1182 sk_SSL_CIPHER_free(s->cipher_list);
1183 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1184 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1185 sk_SSL_CIPHER_free(s->peer_ciphers);
1187 /* Make the next call work :-) */
1188 if (s->session != NULL) {
1189 ssl_clear_bad_session(s);
1190 SSL_SESSION_free(s->session);
1192 SSL_SESSION_free(s->psksession);
1193 OPENSSL_free(s->psksession_id);
1197 ssl_cert_free(s->cert);
1198 OPENSSL_free(s->shared_sigalgs);
1199 /* Free up if allocated */
1201 OPENSSL_free(s->ext.hostname);
1202 SSL_CTX_free(s->session_ctx);
1203 #ifndef OPENSSL_NO_EC
1204 OPENSSL_free(s->ext.ecpointformats);
1205 OPENSSL_free(s->ext.peer_ecpointformats);
1206 #endif /* OPENSSL_NO_EC */
1207 OPENSSL_free(s->ext.supportedgroups);
1208 OPENSSL_free(s->ext.peer_supportedgroups);
1209 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1210 #ifndef OPENSSL_NO_OCSP
1211 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1213 #ifndef OPENSSL_NO_CT
1214 SCT_LIST_free(s->scts);
1215 OPENSSL_free(s->ext.scts);
1217 OPENSSL_free(s->ext.ocsp.resp);
1218 OPENSSL_free(s->ext.alpn);
1219 OPENSSL_free(s->ext.tls13_cookie);
1220 OPENSSL_free(s->clienthello);
1221 OPENSSL_free(s->pha_context);
1222 EVP_MD_CTX_free(s->pha_dgst);
1224 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1225 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1227 sk_X509_pop_free(s->verified_chain, X509_free);
1229 if (s->method != NULL)
1230 s->method->ssl_free(s);
1232 SSL_CTX_free(s->ctx);
1234 ASYNC_WAIT_CTX_free(s->waitctx);
1236 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1237 OPENSSL_free(s->ext.npn);
1240 #ifndef OPENSSL_NO_SRTP
1241 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1244 CRYPTO_THREAD_lock_free(s->lock);
1249 void SSL_set0_rbio(SSL *s, BIO *rbio)
1251 BIO_free_all(s->rbio);
1255 void SSL_set0_wbio(SSL *s, BIO *wbio)
1258 * If the output buffering BIO is still in place, remove it
1260 if (s->bbio != NULL)
1261 s->wbio = BIO_pop(s->wbio);
1263 BIO_free_all(s->wbio);
1266 /* Re-attach |bbio| to the new |wbio|. */
1267 if (s->bbio != NULL)
1268 s->wbio = BIO_push(s->bbio, s->wbio);
1271 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1274 * For historical reasons, this function has many different cases in
1275 * ownership handling.
1278 /* If nothing has changed, do nothing */
1279 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1283 * If the two arguments are equal then one fewer reference is granted by the
1284 * caller than we want to take
1286 if (rbio != NULL && rbio == wbio)
1290 * If only the wbio is changed only adopt one reference.
1292 if (rbio == SSL_get_rbio(s)) {
1293 SSL_set0_wbio(s, wbio);
1297 * There is an asymmetry here for historical reasons. If only the rbio is
1298 * changed AND the rbio and wbio were originally different, then we only
1299 * adopt one reference.
1301 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1302 SSL_set0_rbio(s, rbio);
1306 /* Otherwise, adopt both references. */
1307 SSL_set0_rbio(s, rbio);
1308 SSL_set0_wbio(s, wbio);
1311 BIO *SSL_get_rbio(const SSL *s)
1316 BIO *SSL_get_wbio(const SSL *s)
1318 if (s->bbio != NULL) {
1320 * If |bbio| is active, the true caller-configured BIO is its
1323 return BIO_next(s->bbio);
1328 int SSL_get_fd(const SSL *s)
1330 return SSL_get_rfd(s);
1333 int SSL_get_rfd(const SSL *s)
1338 b = SSL_get_rbio(s);
1339 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1341 BIO_get_fd(r, &ret);
1345 int SSL_get_wfd(const SSL *s)
1350 b = SSL_get_wbio(s);
1351 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1353 BIO_get_fd(r, &ret);
1357 #ifndef OPENSSL_NO_SOCK
1358 int SSL_set_fd(SSL *s, int fd)
1363 bio = BIO_new(BIO_s_socket());
1366 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1369 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1370 SSL_set_bio(s, bio, bio);
1371 #ifndef OPENSSL_NO_KTLS
1373 * The new socket is created successfully regardless of ktls_enable.
1374 * ktls_enable doesn't change any functionality of the socket, except
1375 * changing the setsockopt to enable the processing of ktls_start.
1376 * Thus, it is not a problem to call it for non-TLS sockets.
1379 #endif /* OPENSSL_NO_KTLS */
1385 int SSL_set_wfd(SSL *s, int fd)
1387 BIO *rbio = SSL_get_rbio(s);
1389 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1390 || (int)BIO_get_fd(rbio, NULL) != fd) {
1391 BIO *bio = BIO_new(BIO_s_socket());
1394 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1397 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1398 SSL_set0_wbio(s, bio);
1399 #ifndef OPENSSL_NO_KTLS
1401 * The new socket is created successfully regardless of ktls_enable.
1402 * ktls_enable doesn't change any functionality of the socket, except
1403 * changing the setsockopt to enable the processing of ktls_start.
1404 * Thus, it is not a problem to call it for non-TLS sockets.
1407 #endif /* OPENSSL_NO_KTLS */
1410 SSL_set0_wbio(s, rbio);
1415 int SSL_set_rfd(SSL *s, int fd)
1417 BIO *wbio = SSL_get_wbio(s);
1419 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1420 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1421 BIO *bio = BIO_new(BIO_s_socket());
1424 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1427 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1428 SSL_set0_rbio(s, bio);
1431 SSL_set0_rbio(s, wbio);
1438 /* return length of latest Finished message we sent, copy to 'buf' */
1439 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1443 ret = s->s3.tmp.finish_md_len;
1446 memcpy(buf, s->s3.tmp.finish_md, count);
1450 /* return length of latest Finished message we expected, copy to 'buf' */
1451 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1455 ret = s->s3.tmp.peer_finish_md_len;
1458 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1462 int SSL_get_verify_mode(const SSL *s)
1464 return s->verify_mode;
1467 int SSL_get_verify_depth(const SSL *s)
1469 return X509_VERIFY_PARAM_get_depth(s->param);
1472 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1473 return s->verify_callback;
1476 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1478 return ctx->verify_mode;
1481 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1483 return X509_VERIFY_PARAM_get_depth(ctx->param);
1486 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1487 return ctx->default_verify_callback;
1490 void SSL_set_verify(SSL *s, int mode,
1491 int (*callback) (int ok, X509_STORE_CTX *ctx))
1493 s->verify_mode = mode;
1494 if (callback != NULL)
1495 s->verify_callback = callback;
1498 void SSL_set_verify_depth(SSL *s, int depth)
1500 X509_VERIFY_PARAM_set_depth(s->param, depth);
1503 void SSL_set_read_ahead(SSL *s, int yes)
1505 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1508 int SSL_get_read_ahead(const SSL *s)
1510 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1513 int SSL_pending(const SSL *s)
1515 size_t pending = s->method->ssl_pending(s);
1518 * SSL_pending cannot work properly if read-ahead is enabled
1519 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1520 * impossible to fix since SSL_pending cannot report errors that may be
1521 * observed while scanning the new data. (Note that SSL_pending() is
1522 * often used as a boolean value, so we'd better not return -1.)
1524 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1525 * we just return INT_MAX.
1527 return pending < INT_MAX ? (int)pending : INT_MAX;
1530 int SSL_has_pending(const SSL *s)
1533 * Similar to SSL_pending() but returns a 1 to indicate that we have
1534 * unprocessed data available or 0 otherwise (as opposed to the number of
1535 * bytes available). Unlike SSL_pending() this will take into account
1536 * read_ahead data. A 1 return simply indicates that we have unprocessed
1537 * data. That data may not result in any application data, or we may fail
1538 * to parse the records for some reason.
1540 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1543 return RECORD_LAYER_read_pending(&s->rlayer);
1546 X509 *SSL_get_peer_certificate(const SSL *s)
1550 if ((s == NULL) || (s->session == NULL))
1553 r = s->session->peer;
1563 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1567 if ((s == NULL) || (s->session == NULL))
1570 r = s->session->peer_chain;
1573 * If we are a client, cert_chain includes the peer's own certificate; if
1574 * we are a server, it does not.
1581 * Now in theory, since the calling process own 't' it should be safe to
1582 * modify. We need to be able to read f without being hassled
1584 int SSL_copy_session_id(SSL *t, const SSL *f)
1587 /* Do we need to to SSL locking? */
1588 if (!SSL_set_session(t, SSL_get_session(f))) {
1593 * what if we are setup for one protocol version but want to talk another
1595 if (t->method != f->method) {
1596 t->method->ssl_free(t);
1597 t->method = f->method;
1598 if (t->method->ssl_new(t) == 0)
1602 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1603 ssl_cert_free(t->cert);
1605 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1612 /* Fix this so it checks all the valid key/cert options */
1613 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1615 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1616 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1619 if (ctx->cert->key->privatekey == NULL) {
1620 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1623 return X509_check_private_key
1624 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1627 /* Fix this function so that it takes an optional type parameter */
1628 int SSL_check_private_key(const SSL *ssl)
1631 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1634 if (ssl->cert->key->x509 == NULL) {
1635 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1638 if (ssl->cert->key->privatekey == NULL) {
1639 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1642 return X509_check_private_key(ssl->cert->key->x509,
1643 ssl->cert->key->privatekey);
1646 int SSL_waiting_for_async(SSL *s)
1654 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1656 ASYNC_WAIT_CTX *ctx = s->waitctx;
1660 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1663 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1664 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1666 ASYNC_WAIT_CTX *ctx = s->waitctx;
1670 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1674 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1676 ctx->async_cb = callback;
1680 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1682 ctx->async_cb_arg = arg;
1686 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1688 s->async_cb = callback;
1692 int SSL_set_async_callback_arg(SSL *s, void *arg)
1694 s->async_cb_arg = arg;
1698 int SSL_get_async_status(SSL *s, int *status)
1700 ASYNC_WAIT_CTX *ctx = s->waitctx;
1704 *status = ASYNC_WAIT_CTX_get_status(ctx);
1708 int SSL_accept(SSL *s)
1710 if (s->handshake_func == NULL) {
1711 /* Not properly initialized yet */
1712 SSL_set_accept_state(s);
1715 return SSL_do_handshake(s);
1718 int SSL_connect(SSL *s)
1720 if (s->handshake_func == NULL) {
1721 /* Not properly initialized yet */
1722 SSL_set_connect_state(s);
1725 return SSL_do_handshake(s);
1728 long SSL_get_default_timeout(const SSL *s)
1730 return s->method->get_timeout();
1733 static int ssl_async_wait_ctx_cb(void *arg)
1735 SSL *s = (SSL *)arg;
1737 return s->async_cb(s, s->async_cb_arg);
1740 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1741 int (*func) (void *))
1744 if (s->waitctx == NULL) {
1745 s->waitctx = ASYNC_WAIT_CTX_new();
1746 if (s->waitctx == NULL)
1748 if (s->async_cb != NULL
1749 && !ASYNC_WAIT_CTX_set_callback
1750 (s->waitctx, ssl_async_wait_ctx_cb, s))
1753 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1754 sizeof(struct ssl_async_args))) {
1756 s->rwstate = SSL_NOTHING;
1757 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1760 s->rwstate = SSL_ASYNC_PAUSED;
1763 s->rwstate = SSL_ASYNC_NO_JOBS;
1769 s->rwstate = SSL_NOTHING;
1770 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1771 /* Shouldn't happen */
1776 static int ssl_io_intern(void *vargs)
1778 struct ssl_async_args *args;
1783 args = (struct ssl_async_args *)vargs;
1787 switch (args->type) {
1789 return args->f.func_read(s, buf, num, &s->asyncrw);
1791 return args->f.func_write(s, buf, num, &s->asyncrw);
1793 return args->f.func_other(s);
1798 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1800 if (s->handshake_func == NULL) {
1801 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1805 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1806 s->rwstate = SSL_NOTHING;
1810 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1811 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1812 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1816 * If we are a client and haven't received the ServerHello etc then we
1819 ossl_statem_check_finish_init(s, 0);
1821 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1822 struct ssl_async_args args;
1828 args.type = READFUNC;
1829 args.f.func_read = s->method->ssl_read;
1831 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1832 *readbytes = s->asyncrw;
1835 return s->method->ssl_read(s, buf, num, readbytes);
1839 int SSL_read(SSL *s, void *buf, int num)
1845 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1849 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1852 * The cast is safe here because ret should be <= INT_MAX because num is
1856 ret = (int)readbytes;
1861 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1863 int ret = ssl_read_internal(s, buf, num, readbytes);
1870 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1875 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1876 return SSL_READ_EARLY_DATA_ERROR;
1879 switch (s->early_data_state) {
1880 case SSL_EARLY_DATA_NONE:
1881 if (!SSL_in_before(s)) {
1882 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1883 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1884 return SSL_READ_EARLY_DATA_ERROR;
1888 case SSL_EARLY_DATA_ACCEPT_RETRY:
1889 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1890 ret = SSL_accept(s);
1893 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1894 return SSL_READ_EARLY_DATA_ERROR;
1898 case SSL_EARLY_DATA_READ_RETRY:
1899 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1900 s->early_data_state = SSL_EARLY_DATA_READING;
1901 ret = SSL_read_ex(s, buf, num, readbytes);
1903 * State machine will update early_data_state to
1904 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1907 if (ret > 0 || (ret <= 0 && s->early_data_state
1908 != SSL_EARLY_DATA_FINISHED_READING)) {
1909 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1910 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1911 : SSL_READ_EARLY_DATA_ERROR;
1914 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1917 return SSL_READ_EARLY_DATA_FINISH;
1920 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1921 return SSL_READ_EARLY_DATA_ERROR;
1925 int SSL_get_early_data_status(const SSL *s)
1927 return s->ext.early_data;
1930 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1932 if (s->handshake_func == NULL) {
1933 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1937 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1940 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1941 struct ssl_async_args args;
1947 args.type = READFUNC;
1948 args.f.func_read = s->method->ssl_peek;
1950 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1951 *readbytes = s->asyncrw;
1954 return s->method->ssl_peek(s, buf, num, readbytes);
1958 int SSL_peek(SSL *s, void *buf, int num)
1964 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1968 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1971 * The cast is safe here because ret should be <= INT_MAX because num is
1975 ret = (int)readbytes;
1981 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1983 int ret = ssl_peek_internal(s, buf, num, readbytes);
1990 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1992 if (s->handshake_func == NULL) {
1993 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1997 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1998 s->rwstate = SSL_NOTHING;
1999 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2003 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2004 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2005 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2006 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2009 /* If we are a client and haven't sent the Finished we better do that */
2010 ossl_statem_check_finish_init(s, 1);
2012 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2014 struct ssl_async_args args;
2017 args.buf = (void *)buf;
2019 args.type = WRITEFUNC;
2020 args.f.func_write = s->method->ssl_write;
2022 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2023 *written = s->asyncrw;
2026 return s->method->ssl_write(s, buf, num, written);
2030 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2034 if (s->handshake_func == NULL) {
2035 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2039 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2040 s->rwstate = SSL_NOTHING;
2041 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2045 if (!BIO_get_ktls_send(s->wbio)) {
2046 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2050 /* If we have an alert to send, lets send it */
2051 if (s->s3.alert_dispatch) {
2052 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2054 /* SSLfatal() already called if appropriate */
2057 /* if it went, fall through and send more stuff */
2060 s->rwstate = SSL_WRITING;
2061 if (BIO_flush(s->wbio) <= 0) {
2062 if (!BIO_should_retry(s->wbio)) {
2063 s->rwstate = SSL_NOTHING;
2066 set_sys_error(EAGAIN);
2072 #ifdef OPENSSL_NO_KTLS
2073 ERR_raise_data(ERR_LIB_SYS, ERR_R_INTERNAL_ERROR, "calling sendfile()");
2076 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2078 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2079 if ((get_last_sys_error() == EAGAIN) ||
2080 (get_last_sys_error() == EINTR) ||
2081 (get_last_sys_error() == EBUSY))
2082 BIO_set_retry_write(s->wbio);
2085 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2088 s->rwstate = SSL_NOTHING;
2093 int SSL_write(SSL *s, const void *buf, int num)
2099 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2103 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2106 * The cast is safe here because ret should be <= INT_MAX because num is
2115 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2117 int ret = ssl_write_internal(s, buf, num, written);
2124 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2126 int ret, early_data_state;
2128 uint32_t partialwrite;
2130 switch (s->early_data_state) {
2131 case SSL_EARLY_DATA_NONE:
2133 || !SSL_in_before(s)
2134 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2135 && (s->psk_use_session_cb == NULL))) {
2136 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2137 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2142 case SSL_EARLY_DATA_CONNECT_RETRY:
2143 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2144 ret = SSL_connect(s);
2147 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2152 case SSL_EARLY_DATA_WRITE_RETRY:
2153 s->early_data_state = SSL_EARLY_DATA_WRITING;
2155 * We disable partial write for early data because we don't keep track
2156 * of how many bytes we've written between the SSL_write_ex() call and
2157 * the flush if the flush needs to be retried)
2159 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2160 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2161 ret = SSL_write_ex(s, buf, num, &writtmp);
2162 s->mode |= partialwrite;
2164 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2167 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2170 case SSL_EARLY_DATA_WRITE_FLUSH:
2171 /* The buffering BIO is still in place so we need to flush it */
2172 if (statem_flush(s) != 1)
2175 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2178 case SSL_EARLY_DATA_FINISHED_READING:
2179 case SSL_EARLY_DATA_READ_RETRY:
2180 early_data_state = s->early_data_state;
2181 /* We are a server writing to an unauthenticated client */
2182 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2183 ret = SSL_write_ex(s, buf, num, written);
2184 /* The buffering BIO is still in place */
2186 (void)BIO_flush(s->wbio);
2187 s->early_data_state = early_data_state;
2191 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2196 int SSL_shutdown(SSL *s)
2199 * Note that this function behaves differently from what one might
2200 * expect. Return values are 0 for no success (yet), 1 for success; but
2201 * calling it once is usually not enough, even if blocking I/O is used
2202 * (see ssl3_shutdown).
2205 if (s->handshake_func == NULL) {
2206 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2210 if (!SSL_in_init(s)) {
2211 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2212 struct ssl_async_args args;
2215 args.type = OTHERFUNC;
2216 args.f.func_other = s->method->ssl_shutdown;
2218 return ssl_start_async_job(s, &args, ssl_io_intern);
2220 return s->method->ssl_shutdown(s);
2223 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2228 int SSL_key_update(SSL *s, int updatetype)
2231 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2232 * negotiated, and that it is appropriate to call SSL_key_update() instead
2233 * of SSL_renegotiate().
2235 if (!SSL_IS_TLS13(s)) {
2236 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2240 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2241 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2242 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2246 if (!SSL_is_init_finished(s)) {
2247 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2251 ossl_statem_set_in_init(s, 1);
2252 s->key_update = updatetype;
2256 int SSL_get_key_update_type(const SSL *s)
2258 return s->key_update;
2261 int SSL_renegotiate(SSL *s)
2263 if (SSL_IS_TLS13(s)) {
2264 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2268 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2269 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2276 return s->method->ssl_renegotiate(s);
2279 int SSL_renegotiate_abbreviated(SSL *s)
2281 if (SSL_IS_TLS13(s)) {
2282 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2286 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2287 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2294 return s->method->ssl_renegotiate(s);
2297 int SSL_renegotiate_pending(const SSL *s)
2300 * becomes true when negotiation is requested; false again once a
2301 * handshake has finished
2303 return (s->renegotiate != 0);
2306 int SSL_new_session_ticket(SSL *s)
2308 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2309 || !SSL_IS_TLS13(s))
2311 s->ext.extra_tickets_expected++;
2315 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2320 case SSL_CTRL_GET_READ_AHEAD:
2321 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2322 case SSL_CTRL_SET_READ_AHEAD:
2323 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2324 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2327 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2328 s->msg_callback_arg = parg;
2332 return (s->mode |= larg);
2333 case SSL_CTRL_CLEAR_MODE:
2334 return (s->mode &= ~larg);
2335 case SSL_CTRL_GET_MAX_CERT_LIST:
2336 return (long)s->max_cert_list;
2337 case SSL_CTRL_SET_MAX_CERT_LIST:
2340 l = (long)s->max_cert_list;
2341 s->max_cert_list = (size_t)larg;
2343 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2344 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2346 #ifndef OPENSSL_NO_KTLS
2347 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2349 #endif /* OPENSSL_NO_KTLS */
2350 s->max_send_fragment = larg;
2351 if (s->max_send_fragment < s->split_send_fragment)
2352 s->split_send_fragment = s->max_send_fragment;
2354 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2355 if ((size_t)larg > s->max_send_fragment || larg == 0)
2357 s->split_send_fragment = larg;
2359 case SSL_CTRL_SET_MAX_PIPELINES:
2360 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2362 s->max_pipelines = larg;
2364 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2366 case SSL_CTRL_GET_RI_SUPPORT:
2367 return s->s3.send_connection_binding;
2368 case SSL_CTRL_CERT_FLAGS:
2369 return (s->cert->cert_flags |= larg);
2370 case SSL_CTRL_CLEAR_CERT_FLAGS:
2371 return (s->cert->cert_flags &= ~larg);
2373 case SSL_CTRL_GET_RAW_CIPHERLIST:
2375 if (s->s3.tmp.ciphers_raw == NULL)
2377 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2378 return (int)s->s3.tmp.ciphers_rawlen;
2380 return TLS_CIPHER_LEN;
2382 case SSL_CTRL_GET_EXTMS_SUPPORT:
2383 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2385 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2389 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2390 return ssl_check_allowed_versions(larg, s->max_proto_version)
2391 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2392 &s->min_proto_version);
2393 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2394 return s->min_proto_version;
2395 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2396 return ssl_check_allowed_versions(s->min_proto_version, larg)
2397 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2398 &s->max_proto_version);
2399 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2400 return s->max_proto_version;
2402 return s->method->ssl_ctrl(s, cmd, larg, parg);
2406 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2409 case SSL_CTRL_SET_MSG_CALLBACK:
2410 s->msg_callback = (void (*)
2411 (int write_p, int version, int content_type,
2412 const void *buf, size_t len, SSL *ssl,
2417 return s->method->ssl_callback_ctrl(s, cmd, fp);
2421 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2423 return ctx->sessions;
2426 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2429 /* For some cases with ctx == NULL perform syntax checks */
2432 case SSL_CTRL_SET_GROUPS_LIST:
2433 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2434 case SSL_CTRL_SET_SIGALGS_LIST:
2435 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2436 return tls1_set_sigalgs_list(NULL, parg, 0);
2443 case SSL_CTRL_GET_READ_AHEAD:
2444 return ctx->read_ahead;
2445 case SSL_CTRL_SET_READ_AHEAD:
2446 l = ctx->read_ahead;
2447 ctx->read_ahead = larg;
2450 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2451 ctx->msg_callback_arg = parg;
2454 case SSL_CTRL_GET_MAX_CERT_LIST:
2455 return (long)ctx->max_cert_list;
2456 case SSL_CTRL_SET_MAX_CERT_LIST:
2459 l = (long)ctx->max_cert_list;
2460 ctx->max_cert_list = (size_t)larg;
2463 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2466 l = (long)ctx->session_cache_size;
2467 ctx->session_cache_size = (size_t)larg;
2469 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2470 return (long)ctx->session_cache_size;
2471 case SSL_CTRL_SET_SESS_CACHE_MODE:
2472 l = ctx->session_cache_mode;
2473 ctx->session_cache_mode = larg;
2475 case SSL_CTRL_GET_SESS_CACHE_MODE:
2476 return ctx->session_cache_mode;
2478 case SSL_CTRL_SESS_NUMBER:
2479 return lh_SSL_SESSION_num_items(ctx->sessions);
2480 case SSL_CTRL_SESS_CONNECT:
2481 return tsan_load(&ctx->stats.sess_connect);
2482 case SSL_CTRL_SESS_CONNECT_GOOD:
2483 return tsan_load(&ctx->stats.sess_connect_good);
2484 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2485 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2486 case SSL_CTRL_SESS_ACCEPT:
2487 return tsan_load(&ctx->stats.sess_accept);
2488 case SSL_CTRL_SESS_ACCEPT_GOOD:
2489 return tsan_load(&ctx->stats.sess_accept_good);
2490 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2491 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2492 case SSL_CTRL_SESS_HIT:
2493 return tsan_load(&ctx->stats.sess_hit);
2494 case SSL_CTRL_SESS_CB_HIT:
2495 return tsan_load(&ctx->stats.sess_cb_hit);
2496 case SSL_CTRL_SESS_MISSES:
2497 return tsan_load(&ctx->stats.sess_miss);
2498 case SSL_CTRL_SESS_TIMEOUTS:
2499 return tsan_load(&ctx->stats.sess_timeout);
2500 case SSL_CTRL_SESS_CACHE_FULL:
2501 return tsan_load(&ctx->stats.sess_cache_full);
2503 return (ctx->mode |= larg);
2504 case SSL_CTRL_CLEAR_MODE:
2505 return (ctx->mode &= ~larg);
2506 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2507 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2509 ctx->max_send_fragment = larg;
2510 if (ctx->max_send_fragment < ctx->split_send_fragment)
2511 ctx->split_send_fragment = ctx->max_send_fragment;
2513 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2514 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2516 ctx->split_send_fragment = larg;
2518 case SSL_CTRL_SET_MAX_PIPELINES:
2519 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2521 ctx->max_pipelines = larg;
2523 case SSL_CTRL_CERT_FLAGS:
2524 return (ctx->cert->cert_flags |= larg);
2525 case SSL_CTRL_CLEAR_CERT_FLAGS:
2526 return (ctx->cert->cert_flags &= ~larg);
2527 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2528 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2529 && ssl_set_version_bound(ctx->method->version, (int)larg,
2530 &ctx->min_proto_version);
2531 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2532 return ctx->min_proto_version;
2533 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2534 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2535 && ssl_set_version_bound(ctx->method->version, (int)larg,
2536 &ctx->max_proto_version);
2537 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2538 return ctx->max_proto_version;
2540 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2544 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2547 case SSL_CTRL_SET_MSG_CALLBACK:
2548 ctx->msg_callback = (void (*)
2549 (int write_p, int version, int content_type,
2550 const void *buf, size_t len, SSL *ssl,
2555 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2559 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2568 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2569 const SSL_CIPHER *const *bp)
2571 if ((*ap)->id > (*bp)->id)
2573 if ((*ap)->id < (*bp)->id)
2578 /** return a STACK of the ciphers available for the SSL and in order of
2580 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2583 if (s->cipher_list != NULL) {
2584 return s->cipher_list;
2585 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2586 return s->ctx->cipher_list;
2592 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2594 if ((s == NULL) || !s->server)
2596 return s->peer_ciphers;
2599 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2601 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2604 ciphers = SSL_get_ciphers(s);
2607 if (!ssl_set_client_disabled(s))
2609 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2610 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2611 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2613 sk = sk_SSL_CIPHER_new_null();
2616 if (!sk_SSL_CIPHER_push(sk, c)) {
2617 sk_SSL_CIPHER_free(sk);
2625 /** return a STACK of the ciphers available for the SSL and in order of
2627 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2630 if (s->cipher_list_by_id != NULL) {
2631 return s->cipher_list_by_id;
2632 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2633 return s->ctx->cipher_list_by_id;
2639 /** The old interface to get the same thing as SSL_get_ciphers() */
2640 const char *SSL_get_cipher_list(const SSL *s, int n)
2642 const SSL_CIPHER *c;
2643 STACK_OF(SSL_CIPHER) *sk;
2647 sk = SSL_get_ciphers(s);
2648 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2650 c = sk_SSL_CIPHER_value(sk, n);
2656 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2658 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2661 return ctx->cipher_list;
2666 * Distinguish between ciphers controlled by set_ciphersuite() and
2667 * set_cipher_list() when counting.
2669 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2672 const SSL_CIPHER *c;
2676 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2677 c = sk_SSL_CIPHER_value(sk, i);
2678 if (c->min_tls >= TLS1_3_VERSION)
2685 /** specify the ciphers to be used by default by the SSL_CTX */
2686 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2688 STACK_OF(SSL_CIPHER) *sk;
2690 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2691 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2694 * ssl_create_cipher_list may return an empty stack if it was unable to
2695 * find a cipher matching the given rule string (for example if the rule
2696 * string specifies a cipher which has been disabled). This is not an
2697 * error as far as ssl_create_cipher_list is concerned, and hence
2698 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2702 else if (cipher_list_tls12_num(sk) == 0) {
2703 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2709 /** specify the ciphers to be used by the SSL */
2710 int SSL_set_cipher_list(SSL *s, const char *str)
2712 STACK_OF(SSL_CIPHER) *sk;
2714 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2715 &s->cipher_list, &s->cipher_list_by_id, str,
2717 /* see comment in SSL_CTX_set_cipher_list */
2720 else if (cipher_list_tls12_num(sk) == 0) {
2721 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2727 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2730 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2731 const SSL_CIPHER *c;
2735 || s->peer_ciphers == NULL
2740 clntsk = s->peer_ciphers;
2741 srvrsk = SSL_get_ciphers(s);
2742 if (clntsk == NULL || srvrsk == NULL)
2745 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2748 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2751 c = sk_SSL_CIPHER_value(clntsk, i);
2752 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2755 n = strlen(c->name);
2772 * Return the requested servername (SNI) value. Note that the behaviour varies
2774 * - whether this is called by the client or the server,
2775 * - if we are before or during/after the handshake,
2776 * - if a resumption or normal handshake is being attempted/has occurred
2777 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2779 * Note that only the host_name type is defined (RFC 3546).
2781 const char *SSL_get_servername(const SSL *s, const int type)
2784 * If we don't know if we are the client or the server yet then we assume
2787 int server = s->handshake_func == NULL ? 0 : s->server;
2788 if (type != TLSEXT_NAMETYPE_host_name)
2794 * In TLSv1.3 on the server SNI is not associated with the session
2795 * but in TLSv1.2 or below it is.
2797 * Before the handshake:
2800 * During/after the handshake (TLSv1.2 or below resumption occurred):
2801 * - If a servername was accepted by the server in the original
2802 * handshake then it will return that servername, or NULL otherwise.
2804 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2805 * - The function will return the servername requested by the client in
2806 * this handshake or NULL if none was requested.
2808 if (s->hit && !SSL_IS_TLS13(s))
2809 return s->session->ext.hostname;
2814 * Before the handshake:
2815 * - If a servername has been set via a call to
2816 * SSL_set_tlsext_host_name() then it will return that servername
2817 * - If one has not been set, but a TLSv1.2 resumption is being
2818 * attempted and the session from the original handshake had a
2819 * servername accepted by the server then it will return that
2821 * - Otherwise it returns NULL
2823 * During/after the handshake (TLSv1.2 or below resumption occurred):
2824 * - If the session from the orignal handshake had a servername accepted
2825 * by the server then it will return that servername.
2826 * - Otherwise it returns the servername set via
2827 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2829 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2830 * - It will return the servername set via SSL_set_tlsext_host_name()
2831 * (or NULL if it was not called).
2833 if (SSL_in_before(s)) {
2834 if (s->ext.hostname == NULL
2835 && s->session != NULL
2836 && s->session->ssl_version != TLS1_3_VERSION)
2837 return s->session->ext.hostname;
2839 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2840 return s->session->ext.hostname;
2844 return s->ext.hostname;
2847 int SSL_get_servername_type(const SSL *s)
2849 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2850 return TLSEXT_NAMETYPE_host_name;
2855 * SSL_select_next_proto implements the standard protocol selection. It is
2856 * expected that this function is called from the callback set by
2857 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2858 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2859 * not included in the length. A byte string of length 0 is invalid. No byte
2860 * string may be truncated. The current, but experimental algorithm for
2861 * selecting the protocol is: 1) If the server doesn't support NPN then this
2862 * is indicated to the callback. In this case, the client application has to
2863 * abort the connection or have a default application level protocol. 2) If
2864 * the server supports NPN, but advertises an empty list then the client
2865 * selects the first protocol in its list, but indicates via the API that this
2866 * fallback case was enacted. 3) Otherwise, the client finds the first
2867 * protocol in the server's list that it supports and selects this protocol.
2868 * This is because it's assumed that the server has better information about
2869 * which protocol a client should use. 4) If the client doesn't support any
2870 * of the server's advertised protocols, then this is treated the same as
2871 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2872 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2874 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2875 const unsigned char *server,
2876 unsigned int server_len,
2877 const unsigned char *client, unsigned int client_len)
2880 const unsigned char *result;
2881 int status = OPENSSL_NPN_UNSUPPORTED;
2884 * For each protocol in server preference order, see if we support it.
2886 for (i = 0; i < server_len;) {
2887 for (j = 0; j < client_len;) {
2888 if (server[i] == client[j] &&
2889 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2890 /* We found a match */
2891 result = &server[i];
2892 status = OPENSSL_NPN_NEGOTIATED;
2902 /* There's no overlap between our protocols and the server's list. */
2904 status = OPENSSL_NPN_NO_OVERLAP;
2907 *out = (unsigned char *)result + 1;
2908 *outlen = result[0];
2912 #ifndef OPENSSL_NO_NEXTPROTONEG
2914 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2915 * client's requested protocol for this connection and returns 0. If the
2916 * client didn't request any protocol, then *data is set to NULL. Note that
2917 * the client can request any protocol it chooses. The value returned from
2918 * this function need not be a member of the list of supported protocols
2919 * provided by the callback.
2921 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2925 if (*data == NULL) {
2928 *len = (unsigned int)s->ext.npn_len;
2933 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2934 * a TLS server needs a list of supported protocols for Next Protocol
2935 * Negotiation. The returned list must be in wire format. The list is
2936 * returned by setting |out| to point to it and |outlen| to its length. This
2937 * memory will not be modified, but one should assume that the SSL* keeps a
2938 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2939 * wishes to advertise. Otherwise, no such extension will be included in the
2942 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2943 SSL_CTX_npn_advertised_cb_func cb,
2946 ctx->ext.npn_advertised_cb = cb;
2947 ctx->ext.npn_advertised_cb_arg = arg;
2951 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2952 * client needs to select a protocol from the server's provided list. |out|
2953 * must be set to point to the selected protocol (which may be within |in|).
2954 * The length of the protocol name must be written into |outlen|. The
2955 * server's advertised protocols are provided in |in| and |inlen|. The
2956 * callback can assume that |in| is syntactically valid. The client must
2957 * select a protocol. It is fatal to the connection if this callback returns
2958 * a value other than SSL_TLSEXT_ERR_OK.
2960 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2961 SSL_CTX_npn_select_cb_func cb,
2964 ctx->ext.npn_select_cb = cb;
2965 ctx->ext.npn_select_cb_arg = arg;
2970 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2971 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2972 * length-prefixed strings). Returns 0 on success.
2974 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2975 unsigned int protos_len)
2977 OPENSSL_free(ctx->ext.alpn);
2978 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2979 if (ctx->ext.alpn == NULL) {
2980 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2983 ctx->ext.alpn_len = protos_len;
2989 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2990 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2991 * length-prefixed strings). Returns 0 on success.
2993 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2994 unsigned int protos_len)
2996 OPENSSL_free(ssl->ext.alpn);
2997 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2998 if (ssl->ext.alpn == NULL) {
2999 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3002 ssl->ext.alpn_len = protos_len;
3008 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3009 * called during ClientHello processing in order to select an ALPN protocol
3010 * from the client's list of offered protocols.
3012 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3013 SSL_CTX_alpn_select_cb_func cb,
3016 ctx->ext.alpn_select_cb = cb;
3017 ctx->ext.alpn_select_cb_arg = arg;
3021 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3022 * On return it sets |*data| to point to |*len| bytes of protocol name
3023 * (not including the leading length-prefix byte). If the server didn't
3024 * respond with a negotiated protocol then |*len| will be zero.
3026 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3029 *data = ssl->s3.alpn_selected;
3033 *len = (unsigned int)ssl->s3.alpn_selected_len;
3036 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3037 const char *label, size_t llen,
3038 const unsigned char *context, size_t contextlen,
3041 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
3044 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3046 contextlen, use_context);
3049 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3050 const char *label, size_t llen,
3051 const unsigned char *context,
3054 if (s->version != TLS1_3_VERSION)
3057 return tls13_export_keying_material_early(s, out, olen, label, llen,
3058 context, contextlen);
3061 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3063 const unsigned char *session_id = a->session_id;
3065 unsigned char tmp_storage[4];
3067 if (a->session_id_length < sizeof(tmp_storage)) {
3068 memset(tmp_storage, 0, sizeof(tmp_storage));
3069 memcpy(tmp_storage, a->session_id, a->session_id_length);
3070 session_id = tmp_storage;
3074 ((unsigned long)session_id[0]) |
3075 ((unsigned long)session_id[1] << 8L) |
3076 ((unsigned long)session_id[2] << 16L) |
3077 ((unsigned long)session_id[3] << 24L);
3082 * NB: If this function (or indeed the hash function which uses a sort of
3083 * coarser function than this one) is changed, ensure
3084 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3085 * being able to construct an SSL_SESSION that will collide with any existing
3086 * session with a matching session ID.
3088 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3090 if (a->ssl_version != b->ssl_version)
3092 if (a->session_id_length != b->session_id_length)
3094 return memcmp(a->session_id, b->session_id, a->session_id_length);
3098 * These wrapper functions should remain rather than redeclaring
3099 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3100 * variable. The reason is that the functions aren't static, they're exposed
3104 SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3105 const SSL_METHOD *meth)
3107 SSL_CTX *ret = NULL;
3110 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
3114 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3117 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3118 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3121 ret = OPENSSL_zalloc(sizeof(*ret));
3125 ret->libctx = libctx;
3126 if (propq != NULL) {
3127 ret->propq = OPENSSL_strdup(propq);
3128 if (ret->propq == NULL)
3133 ret->min_proto_version = 0;
3134 ret->max_proto_version = 0;
3135 ret->mode = SSL_MODE_AUTO_RETRY;
3136 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3137 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3138 /* We take the system default. */
3139 ret->session_timeout = meth->get_timeout();
3140 ret->references = 1;
3141 ret->lock = CRYPTO_THREAD_lock_new();
3142 if (ret->lock == NULL) {
3143 SSLerr(0, ERR_R_MALLOC_FAILURE);
3147 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3148 ret->verify_mode = SSL_VERIFY_NONE;
3149 if ((ret->cert = ssl_cert_new()) == NULL)
3152 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3153 if (ret->sessions == NULL)
3155 ret->cert_store = X509_STORE_new();
3156 if (ret->cert_store == NULL)
3158 #ifndef OPENSSL_NO_CT
3159 ret->ctlog_store = CTLOG_STORE_new_with_libctx(libctx, propq);
3160 if (ret->ctlog_store == NULL)
3164 /* initialize cipher/digest methods table */
3165 if (!ssl_load_ciphers(ret))
3167 /* initialise sig algs */
3168 if (!ssl_setup_sig_algs(ret))
3172 if (!ssl_load_groups(ret))
3175 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3178 if (!ssl_create_cipher_list(ret->method,
3179 ret->tls13_ciphersuites,
3180 &ret->cipher_list, &ret->cipher_list_by_id,
3181 OSSL_default_cipher_list(), ret->cert)
3182 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3183 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3187 ret->param = X509_VERIFY_PARAM_new();
3188 if (ret->param == NULL)
3192 * If these aren't available from the provider we'll get NULL returns.
3193 * That's fine but will cause errors later if SSLv3 is negotiated
3195 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3196 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3198 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3201 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3204 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3207 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3210 /* No compression for DTLS */
3211 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3212 ret->comp_methods = SSL_COMP_get_compression_methods();
3214 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3215 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3217 /* Setup RFC5077 ticket keys */
3218 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3219 sizeof(ret->ext.tick_key_name)) <= 0)
3220 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3221 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3222 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3223 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3224 ret->options |= SSL_OP_NO_TICKET;
3226 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3227 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3230 #ifndef OPENSSL_NO_SRP
3231 if (!SSL_CTX_SRP_CTX_init(ret))
3234 #ifndef OPENSSL_NO_ENGINE
3235 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3236 # define eng_strx(x) #x
3237 # define eng_str(x) eng_strx(x)
3238 /* Use specific client engine automatically... ignore errors */
3241 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3244 ENGINE_load_builtin_engines();
3245 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3247 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3253 * Default is to connect to non-RI servers. When RI is more widely
3254 * deployed might change this.
3256 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3258 * Disable compression by default to prevent CRIME. Applications can
3259 * re-enable compression by configuring
3260 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3261 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3262 * middlebox compatibility by default. This may be disabled by default in
3263 * a later OpenSSL version.
3265 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3267 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3270 * We cannot usefully set a default max_early_data here (which gets
3271 * propagated in SSL_new(), for the following reason: setting the
3272 * SSL field causes tls_construct_stoc_early_data() to tell the
3273 * client that early data will be accepted when constructing a TLS 1.3
3274 * session ticket, and the client will accordingly send us early data
3275 * when using that ticket (if the client has early data to send).
3276 * However, in order for the early data to actually be consumed by
3277 * the application, the application must also have calls to
3278 * SSL_read_early_data(); otherwise we'll just skip past the early data
3279 * and ignore it. So, since the application must add calls to
3280 * SSL_read_early_data(), we also require them to add
3281 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3282 * eliminating the bandwidth-wasting early data in the case described
3285 ret->max_early_data = 0;
3288 * Default recv_max_early_data is a fully loaded single record. Could be
3289 * split across multiple records in practice. We set this differently to
3290 * max_early_data so that, in the default case, we do not advertise any
3291 * support for early_data, but if a client were to send us some (e.g.
3292 * because of an old, stale ticket) then we will tolerate it and skip over
3295 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3297 /* By default we send two session tickets automatically in TLSv1.3 */
3298 ret->num_tickets = 2;
3300 ssl_ctx_system_config(ret);
3304 SSLerr(0, ERR_R_MALLOC_FAILURE);
3310 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3312 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3315 int SSL_CTX_up_ref(SSL_CTX *ctx)
3319 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3322 REF_PRINT_COUNT("SSL_CTX", ctx);
3323 REF_ASSERT_ISNT(i < 2);
3324 return ((i > 1) ? 1 : 0);
3327 void SSL_CTX_free(SSL_CTX *a)
3335 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3336 REF_PRINT_COUNT("SSL_CTX", a);
3339 REF_ASSERT_ISNT(i < 0);
3341 X509_VERIFY_PARAM_free(a->param);
3342 dane_ctx_final(&a->dane);
3345 * Free internal session cache. However: the remove_cb() may reference
3346 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3347 * after the sessions were flushed.
3348 * As the ex_data handling routines might also touch the session cache,
3349 * the most secure solution seems to be: empty (flush) the cache, then
3350 * free ex_data, then finally free the cache.
3351 * (See ticket [openssl.org #212].)
3353 if (a->sessions != NULL)
3354 SSL_CTX_flush_sessions(a, 0);
3356 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3357 lh_SSL_SESSION_free(a->sessions);
3358 X509_STORE_free(a->cert_store);
3359 #ifndef OPENSSL_NO_CT
3360 CTLOG_STORE_free(a->ctlog_store);
3362 sk_SSL_CIPHER_free(a->cipher_list);
3363 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3364 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3365 ssl_cert_free(a->cert);
3366 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3367 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3368 sk_X509_pop_free(a->extra_certs, X509_free);
3369 a->comp_methods = NULL;
3370 #ifndef OPENSSL_NO_SRTP
3371 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3373 #ifndef OPENSSL_NO_SRP
3374 SSL_CTX_SRP_CTX_free(a);
3376 #ifndef OPENSSL_NO_ENGINE
3377 ENGINE_finish(a->client_cert_engine);
3380 #ifndef OPENSSL_NO_EC
3381 OPENSSL_free(a->ext.ecpointformats);
3383 OPENSSL_free(a->ext.supportedgroups);
3384 OPENSSL_free(a->ext.alpn);
3385 OPENSSL_secure_free(a->ext.secure);
3387 ssl_evp_md_free(a->md5);
3388 ssl_evp_md_free(a->sha1);
3390 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3391 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3392 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3393 ssl_evp_md_free(a->ssl_digest_methods[j]);
3394 for (j = 0; j < a->group_list_len; j++) {
3395 OPENSSL_free(a->group_list[j].tlsname);
3396 OPENSSL_free(a->group_list[j].realname);
3397 OPENSSL_free(a->group_list[j].algorithm);
3399 OPENSSL_free(a->group_list);
3401 OPENSSL_free(a->sigalg_lookup_cache);
3403 CRYPTO_THREAD_lock_free(a->lock);
3405 OPENSSL_free(a->propq);
3410 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3412 ctx->default_passwd_callback = cb;
3415 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3417 ctx->default_passwd_callback_userdata = u;
3420 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3422 return ctx->default_passwd_callback;
3425 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3427 return ctx->default_passwd_callback_userdata;
3430 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3432 s->default_passwd_callback = cb;
3435 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3437 s->default_passwd_callback_userdata = u;
3440 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3442 return s->default_passwd_callback;
3445 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3447 return s->default_passwd_callback_userdata;
3450 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3451 int (*cb) (X509_STORE_CTX *, void *),
3454 ctx->app_verify_callback = cb;
3455 ctx->app_verify_arg = arg;
3458 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3459 int (*cb) (int, X509_STORE_CTX *))
3461 ctx->verify_mode = mode;
3462 ctx->default_verify_callback = cb;
3465 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3467 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3470 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3472 ssl_cert_set_cert_cb(c->cert, cb, arg);
3475 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3477 ssl_cert_set_cert_cb(s->cert, cb, arg);
3480 void ssl_set_masks(SSL *s)
3483 uint32_t *pvalid = s->s3.tmp.valid_flags;
3484 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3485 unsigned long mask_k, mask_a;
3486 #ifndef OPENSSL_NO_EC
3487 int have_ecc_cert, ecdsa_ok;
3492 #ifndef OPENSSL_NO_DH
3493 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3498 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3499 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3500 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3501 #ifndef OPENSSL_NO_EC
3502 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3507 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3508 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3510 #ifndef OPENSSL_NO_GOST
3511 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3512 mask_k |= SSL_kGOST | SSL_kGOST18;
3513 mask_a |= SSL_aGOST12;
3515 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3516 mask_k |= SSL_kGOST | SSL_kGOST18;
3517 mask_a |= SSL_aGOST12;
3519 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3520 mask_k |= SSL_kGOST;
3521 mask_a |= SSL_aGOST01;
3532 * If we only have an RSA-PSS certificate allow RSA authentication
3533 * if TLS 1.2 and peer supports it.
3536 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3537 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3538 && TLS1_get_version(s) == TLS1_2_VERSION))
3545 mask_a |= SSL_aNULL;
3548 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3549 * depending on the key usage extension.
3551 #ifndef OPENSSL_NO_EC
3552 if (have_ecc_cert) {
3554 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3555 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3556 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3559 mask_a |= SSL_aECDSA;
3561 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3562 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3563 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3564 && TLS1_get_version(s) == TLS1_2_VERSION)
3565 mask_a |= SSL_aECDSA;
3567 /* Allow Ed448 for TLS 1.2 if peer supports it */
3568 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3569 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3570 && TLS1_get_version(s) == TLS1_2_VERSION)
3571 mask_a |= SSL_aECDSA;
3574 #ifndef OPENSSL_NO_EC
3575 mask_k |= SSL_kECDHE;
3578 #ifndef OPENSSL_NO_PSK
3581 if (mask_k & SSL_kRSA)
3582 mask_k |= SSL_kRSAPSK;
3583 if (mask_k & SSL_kDHE)
3584 mask_k |= SSL_kDHEPSK;
3585 if (mask_k & SSL_kECDHE)
3586 mask_k |= SSL_kECDHEPSK;
3589 s->s3.tmp.mask_k = mask_k;
3590 s->s3.tmp.mask_a = mask_a;
3593 #ifndef OPENSSL_NO_EC
3595 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3597 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3598 /* key usage, if present, must allow signing */
3599 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3600 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3601 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3605 return 1; /* all checks are ok */
3610 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3611 size_t *serverinfo_length)
3613 CERT_PKEY *cpk = s->s3.tmp.cert;
3614 *serverinfo_length = 0;
3616 if (cpk == NULL || cpk->serverinfo == NULL)
3619 *serverinfo = cpk->serverinfo;
3620 *serverinfo_length = cpk->serverinfo_length;
3624 void ssl_update_cache(SSL *s, int mode)
3629 * If the session_id_length is 0, we are not supposed to cache it, and it
3630 * would be rather hard to do anyway :-)
3632 if (s->session->session_id_length == 0)
3636 * If sid_ctx_length is 0 there is no specific application context
3637 * associated with this session, so when we try to resume it and
3638 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3639 * indication that this is actually a session for the proper application
3640 * context, and the *handshake* will fail, not just the resumption attempt.
3641 * Do not cache (on the server) these sessions that are not resumable
3642 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3644 if (s->server && s->session->sid_ctx_length == 0
3645 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3648 i = s->session_ctx->session_cache_mode;
3650 && (!s->hit || SSL_IS_TLS13(s))) {
3652 * Add the session to the internal cache. In server side TLSv1.3 we
3653 * normally don't do this because by default it's a full stateless ticket
3654 * with only a dummy session id so there is no reason to cache it,
3656 * - we are doing early_data, in which case we cache so that we can
3658 * - the application has set a remove_session_cb so needs to know about
3659 * session timeout events
3660 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3662 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3663 && (!SSL_IS_TLS13(s)
3665 || (s->max_early_data > 0
3666 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3667 || s->session_ctx->remove_session_cb != NULL
3668 || (s->options & SSL_OP_NO_TICKET) != 0))
3669 SSL_CTX_add_session(s->session_ctx, s->session);
3672 * Add the session to the external cache. We do this even in server side
3673 * TLSv1.3 without early data because some applications just want to
3674 * know about the creation of a session and aren't doing a full cache.
3676 if (s->session_ctx->new_session_cb != NULL) {
3677 SSL_SESSION_up_ref(s->session);
3678 if (!s->session_ctx->new_session_cb(s, s->session))
3679 SSL_SESSION_free(s->session);
3683 /* auto flush every 255 connections */
3684 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3685 TSAN_QUALIFIER int *stat;
3686 if (mode & SSL_SESS_CACHE_CLIENT)
3687 stat = &s->session_ctx->stats.sess_connect_good;
3689 stat = &s->session_ctx->stats.sess_accept_good;
3690 if ((tsan_load(stat) & 0xff) == 0xff)
3691 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3695 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3700 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3705 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3709 if (s->method != meth) {
3710 const SSL_METHOD *sm = s->method;
3711 int (*hf) (SSL *) = s->handshake_func;
3713 if (sm->version == meth->version)
3718 ret = s->method->ssl_new(s);
3721 if (hf == sm->ssl_connect)
3722 s->handshake_func = meth->ssl_connect;
3723 else if (hf == sm->ssl_accept)
3724 s->handshake_func = meth->ssl_accept;
3729 int SSL_get_error(const SSL *s, int i)
3736 return SSL_ERROR_NONE;
3739 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3740 * where we do encode the error
3742 if ((l = ERR_peek_error()) != 0) {
3743 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3744 return SSL_ERROR_SYSCALL;
3746 return SSL_ERROR_SSL;
3749 if (SSL_want_read(s)) {
3750 bio = SSL_get_rbio(s);
3751 if (BIO_should_read(bio))
3752 return SSL_ERROR_WANT_READ;
3753 else if (BIO_should_write(bio))
3755 * This one doesn't make too much sense ... We never try to write
3756 * to the rbio, and an application program where rbio and wbio
3757 * are separate couldn't even know what it should wait for.
3758 * However if we ever set s->rwstate incorrectly (so that we have
3759 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3760 * wbio *are* the same, this test works around that bug; so it
3761 * might be safer to keep it.
3763 return SSL_ERROR_WANT_WRITE;
3764 else if (BIO_should_io_special(bio)) {
3765 reason = BIO_get_retry_reason(bio);
3766 if (reason == BIO_RR_CONNECT)
3767 return SSL_ERROR_WANT_CONNECT;
3768 else if (reason == BIO_RR_ACCEPT)
3769 return SSL_ERROR_WANT_ACCEPT;
3771 return SSL_ERROR_SYSCALL; /* unknown */
3775 if (SSL_want_write(s)) {
3776 /* Access wbio directly - in order to use the buffered bio if present */
3778 if (BIO_should_write(bio))
3779 return SSL_ERROR_WANT_WRITE;
3780 else if (BIO_should_read(bio))
3782 * See above (SSL_want_read(s) with BIO_should_write(bio))
3784 return SSL_ERROR_WANT_READ;
3785 else if (BIO_should_io_special(bio)) {
3786 reason = BIO_get_retry_reason(bio);
3787 if (reason == BIO_RR_CONNECT)
3788 return SSL_ERROR_WANT_CONNECT;
3789 else if (reason == BIO_RR_ACCEPT)
3790 return SSL_ERROR_WANT_ACCEPT;
3792 return SSL_ERROR_SYSCALL;
3795 if (SSL_want_x509_lookup(s))
3796 return SSL_ERROR_WANT_X509_LOOKUP;
3797 if (SSL_want_async(s))
3798 return SSL_ERROR_WANT_ASYNC;
3799 if (SSL_want_async_job(s))
3800 return SSL_ERROR_WANT_ASYNC_JOB;
3801 if (SSL_want_client_hello_cb(s))
3802 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3804 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3805 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3806 return SSL_ERROR_ZERO_RETURN;
3808 return SSL_ERROR_SYSCALL;
3811 static int ssl_do_handshake_intern(void *vargs)
3813 struct ssl_async_args *args;
3816 args = (struct ssl_async_args *)vargs;
3819 return s->handshake_func(s);
3822 int SSL_do_handshake(SSL *s)
3826 if (s->handshake_func == NULL) {
3827 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3831 ossl_statem_check_finish_init(s, -1);
3833 s->method->ssl_renegotiate_check(s, 0);
3835 if (SSL_in_init(s) || SSL_in_before(s)) {
3836 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3837 struct ssl_async_args args;
3841 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3843 ret = s->handshake_func(s);
3849 void SSL_set_accept_state(SSL *s)
3853 ossl_statem_clear(s);
3854 s->handshake_func = s->method->ssl_accept;
3858 void SSL_set_connect_state(SSL *s)
3862 ossl_statem_clear(s);
3863 s->handshake_func = s->method->ssl_connect;
3867 int ssl_undefined_function(SSL *s)
3869 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3873 int ssl_undefined_void_function(void)
3875 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3876 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3880 int ssl_undefined_const_function(const SSL *s)
3885 const SSL_METHOD *ssl_bad_method(int ver)
3887 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3891 const char *ssl_protocol_to_string(int version)
3895 case TLS1_3_VERSION:
3898 case TLS1_2_VERSION:
3901 case TLS1_1_VERSION:
3916 case DTLS1_2_VERSION:
3924 const char *SSL_get_version(const SSL *s)
3926 return ssl_protocol_to_string(s->version);
3929 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3931 STACK_OF(X509_NAME) *sk;
3940 if ((sk = sk_X509_NAME_new_null()) == NULL)
3942 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3943 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3945 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3948 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3950 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3959 SSL *SSL_dup(SSL *s)
3964 /* If we're not quiescent, just up_ref! */
3965 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3966 CRYPTO_UP_REF(&s->references, &i, s->lock);
3971 * Otherwise, copy configuration state, and session if set.
3973 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3976 if (s->session != NULL) {
3978 * Arranges to share the same session via up_ref. This "copies"
3979 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3981 if (!SSL_copy_session_id(ret, s))
3985 * No session has been established yet, so we have to expect that
3986 * s->cert or ret->cert will be changed later -- they should not both
3987 * point to the same object, and thus we can't use
3988 * SSL_copy_session_id.
3990 if (!SSL_set_ssl_method(ret, s->method))
3993 if (s->cert != NULL) {
3994 ssl_cert_free(ret->cert);
3995 ret->cert = ssl_cert_dup(s->cert);
3996 if (ret->cert == NULL)
4000 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4001 (int)s->sid_ctx_length))
4005 if (!ssl_dane_dup(ret, s))
4007 ret->version = s->version;
4008 ret->options = s->options;
4009 ret->min_proto_version = s->min_proto_version;
4010 ret->max_proto_version = s->max_proto_version;
4011 ret->mode = s->mode;
4012 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4013 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4014 ret->msg_callback = s->msg_callback;
4015 ret->msg_callback_arg = s->msg_callback_arg;
4016 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4017 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4018 ret->generate_session_id = s->generate_session_id;
4020 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4022 /* copy app data, a little dangerous perhaps */
4023 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4026 ret->server = s->server;
4027 if (s->handshake_func) {
4029 SSL_set_accept_state(ret);
4031 SSL_set_connect_state(ret);
4033 ret->shutdown = s->shutdown;
4036 ret->default_passwd_callback = s->default_passwd_callback;
4037 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4039 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4041 /* dup the cipher_list and cipher_list_by_id stacks */
4042 if (s->cipher_list != NULL) {
4043 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4046 if (s->cipher_list_by_id != NULL)
4047 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4051 /* Dup the client_CA list */
4052 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4053 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4063 void ssl_clear_cipher_ctx(SSL *s)
4065 if (s->enc_read_ctx != NULL) {
4066 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4067 s->enc_read_ctx = NULL;
4069 if (s->enc_write_ctx != NULL) {
4070 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4071 s->enc_write_ctx = NULL;
4073 #ifndef OPENSSL_NO_COMP
4074 COMP_CTX_free(s->expand);
4076 COMP_CTX_free(s->compress);
4081 X509 *SSL_get_certificate(const SSL *s)
4083 if (s->cert != NULL)
4084 return s->cert->key->x509;
4089 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4091 if (s->cert != NULL)
4092 return s->cert->key->privatekey;
4097 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4099 if (ctx->cert != NULL)
4100 return ctx->cert->key->x509;
4105 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4107 if (ctx->cert != NULL)
4108 return ctx->cert->key->privatekey;
4113 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4115 if ((s->session != NULL) && (s->session->cipher != NULL))
4116 return s->session->cipher;
4120 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4122 return s->s3.tmp.new_cipher;
4125 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4127 #ifndef OPENSSL_NO_COMP
4128 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4134 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4136 #ifndef OPENSSL_NO_COMP
4137 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4143 int ssl_init_wbio_buffer(SSL *s)
4147 if (s->bbio != NULL) {
4148 /* Already buffered. */
4152 bbio = BIO_new(BIO_f_buffer());
4153 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4155 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4159 s->wbio = BIO_push(bbio, s->wbio);
4164 int ssl_free_wbio_buffer(SSL *s)
4166 /* callers ensure s is never null */
4167 if (s->bbio == NULL)
4170 s->wbio = BIO_pop(s->wbio);
4177 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4179 ctx->quiet_shutdown = mode;
4182 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4184 return ctx->quiet_shutdown;
4187 void SSL_set_quiet_shutdown(SSL *s, int mode)
4189 s->quiet_shutdown = mode;
4192 int SSL_get_quiet_shutdown(const SSL *s)
4194 return s->quiet_shutdown;
4197 void SSL_set_shutdown(SSL *s, int mode)
4202 int SSL_get_shutdown(const SSL *s)
4207 int SSL_version(const SSL *s)
4212 int SSL_client_version(const SSL *s)
4214 return s->client_version;
4217 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4222 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4225 if (ssl->ctx == ctx)
4228 ctx = ssl->session_ctx;
4229 new_cert = ssl_cert_dup(ctx->cert);
4230 if (new_cert == NULL) {
4234 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4235 ssl_cert_free(new_cert);
4239 ssl_cert_free(ssl->cert);
4240 ssl->cert = new_cert;
4243 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4244 * so setter APIs must prevent invalid lengths from entering the system.
4246 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4250 * If the session ID context matches that of the parent SSL_CTX,
4251 * inherit it from the new SSL_CTX as well. If however the context does
4252 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4253 * leave it unchanged.
4255 if ((ssl->ctx != NULL) &&
4256 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4257 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4258 ssl->sid_ctx_length = ctx->sid_ctx_length;
4259 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4262 SSL_CTX_up_ref(ctx);
4263 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4269 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4271 return X509_STORE_set_default_paths(ctx->cert_store);
4274 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4276 X509_LOOKUP *lookup;
4278 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4282 /* We ignore errors, in case the directory doesn't exist */
4285 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4292 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4294 X509_LOOKUP *lookup;
4296 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4300 /* We ignore errors, in case the directory doesn't exist */
4303 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4310 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4312 X509_LOOKUP *lookup;
4314 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4318 /* We ignore errors, in case the directory doesn't exist */
4321 X509_LOOKUP_add_store(lookup, NULL);
4328 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4330 return X509_STORE_load_file(ctx->cert_store, CAfile);
4333 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4335 return X509_STORE_load_path(ctx->cert_store, CApath);
4338 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4340 return X509_STORE_load_store(ctx->cert_store, CAstore);
4343 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4346 if (CAfile == NULL && CApath == NULL)
4348 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4350 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4355 void SSL_set_info_callback(SSL *ssl,
4356 void (*cb) (const SSL *ssl, int type, int val))
4358 ssl->info_callback = cb;
4362 * One compiler (Diab DCC) doesn't like argument names in returned function
4365 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4368 return ssl->info_callback;
4371 void SSL_set_verify_result(SSL *ssl, long arg)
4373 ssl->verify_result = arg;
4376 long SSL_get_verify_result(const SSL *ssl)
4378 return ssl->verify_result;
4381 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4384 return sizeof(ssl->s3.client_random);
4385 if (outlen > sizeof(ssl->s3.client_random))
4386 outlen = sizeof(ssl->s3.client_random);
4387 memcpy(out, ssl->s3.client_random, outlen);
4391 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4394 return sizeof(ssl->s3.server_random);
4395 if (outlen > sizeof(ssl->s3.server_random))
4396 outlen = sizeof(ssl->s3.server_random);
4397 memcpy(out, ssl->s3.server_random, outlen);
4401 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4402 unsigned char *out, size_t outlen)
4405 return session->master_key_length;
4406 if (outlen > session->master_key_length)
4407 outlen = session->master_key_length;
4408 memcpy(out, session->master_key, outlen);
4412 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4415 if (len > sizeof(sess->master_key))
4418 memcpy(sess->master_key, in, len);
4419 sess->master_key_length = len;
4424 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4426 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4429 void *SSL_get_ex_data(const SSL *s, int idx)
4431 return CRYPTO_get_ex_data(&s->ex_data, idx);
4434 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4436 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4439 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4441 return CRYPTO_get_ex_data(&s->ex_data, idx);
4444 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4446 return ctx->cert_store;
4449 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4451 X509_STORE_free(ctx->cert_store);
4452 ctx->cert_store = store;
4455 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4458 X509_STORE_up_ref(store);
4459 SSL_CTX_set_cert_store(ctx, store);
4462 int SSL_want(const SSL *s)
4468 * \brief Set the callback for generating temporary DH keys.
4469 * \param ctx the SSL context.
4470 * \param dh the callback
4473 #ifndef OPENSSL_NO_DH
4474 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4475 DH *(*dh) (SSL *ssl, int is_export,
4478 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4481 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4484 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4488 #ifndef OPENSSL_NO_PSK
4489 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4491 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4492 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4495 OPENSSL_free(ctx->cert->psk_identity_hint);
4496 if (identity_hint != NULL) {
4497 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4498 if (ctx->cert->psk_identity_hint == NULL)
4501 ctx->cert->psk_identity_hint = NULL;
4505 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4510 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4511 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4514 OPENSSL_free(s->cert->psk_identity_hint);
4515 if (identity_hint != NULL) {
4516 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4517 if (s->cert->psk_identity_hint == NULL)
4520 s->cert->psk_identity_hint = NULL;
4524 const char *SSL_get_psk_identity_hint(const SSL *s)
4526 if (s == NULL || s->session == NULL)
4528 return s->session->psk_identity_hint;
4531 const char *SSL_get_psk_identity(const SSL *s)
4533 if (s == NULL || s->session == NULL)
4535 return s->session->psk_identity;
4538 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4540 s->psk_client_callback = cb;
4543 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4545 ctx->psk_client_callback = cb;
4548 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4550 s->psk_server_callback = cb;
4553 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4555 ctx->psk_server_callback = cb;
4559 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4561 s->psk_find_session_cb = cb;
4564 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4565 SSL_psk_find_session_cb_func cb)
4567 ctx->psk_find_session_cb = cb;
4570 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4572 s->psk_use_session_cb = cb;
4575 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4576 SSL_psk_use_session_cb_func cb)
4578 ctx->psk_use_session_cb = cb;
4581 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4582 void (*cb) (int write_p, int version,
4583 int content_type, const void *buf,
4584 size_t len, SSL *ssl, void *arg))
4586 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4589 void SSL_set_msg_callback(SSL *ssl,
4590 void (*cb) (int write_p, int version,
4591 int content_type, const void *buf,
4592 size_t len, SSL *ssl, void *arg))
4594 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4597 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4598 int (*cb) (SSL *ssl,
4602 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4603 (void (*)(void))cb);
4606 void SSL_set_not_resumable_session_callback(SSL *ssl,
4607 int (*cb) (SSL *ssl,
4608 int is_forward_secure))
4610 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4611 (void (*)(void))cb);
4614 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4615 size_t (*cb) (SSL *ssl, int type,
4616 size_t len, void *arg))
4618 ctx->record_padding_cb = cb;
4621 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4623 ctx->record_padding_arg = arg;
4626 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4628 return ctx->record_padding_arg;
4631 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4633 /* block size of 0 or 1 is basically no padding */
4634 if (block_size == 1)
4635 ctx->block_padding = 0;
4636 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4637 ctx->block_padding = block_size;
4643 int SSL_set_record_padding_callback(SSL *ssl,
4644 size_t (*cb) (SSL *ssl, int type,
4645 size_t len, void *arg))
4649 b = SSL_get_wbio(ssl);
4650 if (b == NULL || !BIO_get_ktls_send(b)) {
4651 ssl->record_padding_cb = cb;
4657 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4659 ssl->record_padding_arg = arg;
4662 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4664 return ssl->record_padding_arg;
4667 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4669 /* block size of 0 or 1 is basically no padding */
4670 if (block_size == 1)
4671 ssl->block_padding = 0;
4672 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4673 ssl->block_padding = block_size;
4679 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4681 s->num_tickets = num_tickets;
4686 size_t SSL_get_num_tickets(const SSL *s)
4688 return s->num_tickets;
4691 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4693 ctx->num_tickets = num_tickets;
4698 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4700 return ctx->num_tickets;
4704 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4705 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4706 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4707 * Returns the newly allocated ctx;
4710 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4712 ssl_clear_hash_ctx(hash);
4713 *hash = EVP_MD_CTX_new();
4714 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4715 EVP_MD_CTX_free(*hash);
4722 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4725 EVP_MD_CTX_free(*hash);
4729 /* Retrieve handshake hashes */
4730 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4733 EVP_MD_CTX *ctx = NULL;
4734 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4735 int hashleni = EVP_MD_CTX_size(hdgst);
4738 if (hashleni < 0 || (size_t)hashleni > outlen) {
4739 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4740 ERR_R_INTERNAL_ERROR);
4744 ctx = EVP_MD_CTX_new();
4748 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4749 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4750 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4751 ERR_R_INTERNAL_ERROR);
4755 *hashlen = hashleni;
4759 EVP_MD_CTX_free(ctx);
4763 int SSL_session_reused(const SSL *s)
4768 int SSL_is_server(const SSL *s)
4773 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4774 void SSL_set_debug(SSL *s, int debug)
4776 /* Old function was do-nothing anyway... */
4782 void SSL_set_security_level(SSL *s, int level)
4784 s->cert->sec_level = level;
4787 int SSL_get_security_level(const SSL *s)
4789 return s->cert->sec_level;
4792 void SSL_set_security_callback(SSL *s,
4793 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4794 int op, int bits, int nid,
4795 void *other, void *ex))
4797 s->cert->sec_cb = cb;
4800 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4801 const SSL_CTX *ctx, int op,
4802 int bits, int nid, void *other,
4804 return s->cert->sec_cb;
4807 void SSL_set0_security_ex_data(SSL *s, void *ex)
4809 s->cert->sec_ex = ex;
4812 void *SSL_get0_security_ex_data(const SSL *s)
4814 return s->cert->sec_ex;
4817 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4819 ctx->cert->sec_level = level;
4822 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4824 return ctx->cert->sec_level;
4827 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4828 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4829 int op, int bits, int nid,
4830 void *other, void *ex))
4832 ctx->cert->sec_cb = cb;
4835 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4841 return ctx->cert->sec_cb;
4844 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4846 ctx->cert->sec_ex = ex;
4849 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4851 return ctx->cert->sec_ex;
4855 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4856 * can return unsigned long, instead of the generic long return value from the
4857 * control interface.
4859 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4861 return ctx->options;
4864 unsigned long SSL_get_options(const SSL *s)
4869 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4871 return ctx->options |= op;
4874 unsigned long SSL_set_options(SSL *s, unsigned long op)
4876 return s->options |= op;
4879 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4881 return ctx->options &= ~op;
4884 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4886 return s->options &= ~op;
4889 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4891 return s->verified_chain;
4894 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4896 #ifndef OPENSSL_NO_CT
4899 * Moves SCTs from the |src| stack to the |dst| stack.
4900 * The source of each SCT will be set to |origin|.
4901 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4903 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4905 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4906 sct_source_t origin)
4912 *dst = sk_SCT_new_null();
4914 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4919 while ((sct = sk_SCT_pop(src)) != NULL) {
4920 if (SCT_set_source(sct, origin) != 1)
4923 if (sk_SCT_push(*dst, sct) <= 0)
4931 sk_SCT_push(src, sct); /* Put the SCT back */
4936 * Look for data collected during ServerHello and parse if found.
4937 * Returns the number of SCTs extracted.
4939 static int ct_extract_tls_extension_scts(SSL *s)
4941 int scts_extracted = 0;
4943 if (s->ext.scts != NULL) {
4944 const unsigned char *p = s->ext.scts;
4945 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4947 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4949 SCT_LIST_free(scts);
4952 return scts_extracted;
4956 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4957 * contains an SCT X509 extension. They will be stored in |s->scts|.
4959 * - The number of SCTs extracted, assuming an OCSP response exists.
4960 * - 0 if no OCSP response exists or it contains no SCTs.
4961 * - A negative integer if an error occurs.
4963 static int ct_extract_ocsp_response_scts(SSL *s)
4965 # ifndef OPENSSL_NO_OCSP
4966 int scts_extracted = 0;
4967 const unsigned char *p;
4968 OCSP_BASICRESP *br = NULL;
4969 OCSP_RESPONSE *rsp = NULL;
4970 STACK_OF(SCT) *scts = NULL;
4973 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4976 p = s->ext.ocsp.resp;
4977 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4981 br = OCSP_response_get1_basic(rsp);
4985 for (i = 0; i < OCSP_resp_count(br); ++i) {
4986 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4992 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4994 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4995 if (scts_extracted < 0)
4999 SCT_LIST_free(scts);
5000 OCSP_BASICRESP_free(br);
5001 OCSP_RESPONSE_free(rsp);
5002 return scts_extracted;
5004 /* Behave as if no OCSP response exists */
5010 * Attempts to extract SCTs from the peer certificate.
5011 * Return the number of SCTs extracted, or a negative integer if an error
5014 static int ct_extract_x509v3_extension_scts(SSL *s)
5016 int scts_extracted = 0;
5017 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5020 STACK_OF(SCT) *scts =
5021 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5024 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5026 SCT_LIST_free(scts);
5029 return scts_extracted;
5033 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5034 * response (if it exists) and X509v3 extensions in the certificate.
5035 * Returns NULL if an error occurs.
5037 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5039 if (!s->scts_parsed) {
5040 if (ct_extract_tls_extension_scts(s) < 0 ||
5041 ct_extract_ocsp_response_scts(s) < 0 ||
5042 ct_extract_x509v3_extension_scts(s) < 0)
5052 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5053 const STACK_OF(SCT) *scts, void *unused_arg)
5058 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5059 const STACK_OF(SCT) *scts, void *unused_arg)
5061 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5064 for (i = 0; i < count; ++i) {
5065 SCT *sct = sk_SCT_value(scts, i);
5066 int status = SCT_get_validation_status(sct);
5068 if (status == SCT_VALIDATION_STATUS_VALID)
5071 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5075 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5079 * Since code exists that uses the custom extension handler for CT, look
5080 * for this and throw an error if they have already registered to use CT.
5082 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5083 TLSEXT_TYPE_signed_certificate_timestamp))
5085 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5086 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5090 if (callback != NULL) {
5092 * If we are validating CT, then we MUST accept SCTs served via OCSP
5094 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5098 s->ct_validation_callback = callback;
5099 s->ct_validation_callback_arg = arg;
5104 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5105 ssl_ct_validation_cb callback, void *arg)
5108 * Since code exists that uses the custom extension handler for CT, look for
5109 * this and throw an error if they have already registered to use CT.
5111 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5112 TLSEXT_TYPE_signed_certificate_timestamp))
5114 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5115 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5119 ctx->ct_validation_callback = callback;
5120 ctx->ct_validation_callback_arg = arg;
5124 int SSL_ct_is_enabled(const SSL *s)
5126 return s->ct_validation_callback != NULL;
5129 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5131 return ctx->ct_validation_callback != NULL;
5134 int ssl_validate_ct(SSL *s)
5137 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5139 SSL_DANE *dane = &s->dane;
5140 CT_POLICY_EVAL_CTX *ctx = NULL;
5141 const STACK_OF(SCT) *scts;
5144 * If no callback is set, the peer is anonymous, or its chain is invalid,
5145 * skip SCT validation - just return success. Applications that continue
5146 * handshakes without certificates, with unverified chains, or pinned leaf
5147 * certificates are outside the scope of the WebPKI and CT.
5149 * The above exclusions notwithstanding the vast majority of peers will
5150 * have rather ordinary certificate chains validated by typical
5151 * applications that perform certificate verification and therefore will
5152 * process SCTs when enabled.
5154 if (s->ct_validation_callback == NULL || cert == NULL ||
5155 s->verify_result != X509_V_OK ||
5156 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5160 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5161 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5163 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5164 switch (dane->mtlsa->usage) {
5165 case DANETLS_USAGE_DANE_TA:
5166 case DANETLS_USAGE_DANE_EE:
5171 ctx = CT_POLICY_EVAL_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
5173 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5174 ERR_R_MALLOC_FAILURE);
5178 issuer = sk_X509_value(s->verified_chain, 1);
5179 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5180 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5181 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5182 CT_POLICY_EVAL_CTX_set_time(
5183 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5185 scts = SSL_get0_peer_scts(s);
5188 * This function returns success (> 0) only when all the SCTs are valid, 0
5189 * when some are invalid, and < 0 on various internal errors (out of
5190 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5191 * reason to abort the handshake, that decision is up to the callback.
5192 * Therefore, we error out only in the unexpected case that the return
5193 * value is negative.
5195 * XXX: One might well argue that the return value of this function is an
5196 * unfortunate design choice. Its job is only to determine the validation
5197 * status of each of the provided SCTs. So long as it correctly separates
5198 * the wheat from the chaff it should return success. Failure in this case
5199 * ought to correspond to an inability to carry out its duties.
5201 if (SCT_LIST_validate(scts, ctx) < 0) {
5202 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5203 SSL_R_SCT_VERIFICATION_FAILED);
5207 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5209 ret = 0; /* This function returns 0 on failure */
5211 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5212 SSL_R_CALLBACK_FAILED);
5215 CT_POLICY_EVAL_CTX_free(ctx);
5217 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5218 * failure return code here. Also the application may wish the complete
5219 * the handshake, and then disconnect cleanly at a higher layer, after
5220 * checking the verification status of the completed connection.
5222 * We therefore force a certificate verification failure which will be
5223 * visible via SSL_get_verify_result() and cached as part of any resumed
5226 * Note: the permissive callback is for information gathering only, always
5227 * returns success, and does not affect verification status. Only the
5228 * strict callback or a custom application-specified callback can trigger
5229 * connection failure or record a verification error.
5232 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5236 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5238 switch (validation_mode) {
5240 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5242 case SSL_CT_VALIDATION_PERMISSIVE:
5243 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5244 case SSL_CT_VALIDATION_STRICT:
5245 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5249 int SSL_enable_ct(SSL *s, int validation_mode)
5251 switch (validation_mode) {
5253 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5255 case SSL_CT_VALIDATION_PERMISSIVE:
5256 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5257 case SSL_CT_VALIDATION_STRICT:
5258 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5262 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5264 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5267 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5269 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5272 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5274 CTLOG_STORE_free(ctx->ctlog_store);
5275 ctx->ctlog_store = logs;
5278 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5280 return ctx->ctlog_store;
5283 #endif /* OPENSSL_NO_CT */
5285 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5288 c->client_hello_cb = cb;
5289 c->client_hello_cb_arg = arg;
5292 int SSL_client_hello_isv2(SSL *s)
5294 if (s->clienthello == NULL)
5296 return s->clienthello->isv2;
5299 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5301 if (s->clienthello == NULL)
5303 return s->clienthello->legacy_version;
5306 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5308 if (s->clienthello == NULL)
5311 *out = s->clienthello->random;
5312 return SSL3_RANDOM_SIZE;
5315 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5317 if (s->clienthello == NULL)
5320 *out = s->clienthello->session_id;
5321 return s->clienthello->session_id_len;
5324 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5326 if (s->clienthello == NULL)
5329 *out = PACKET_data(&s->clienthello->ciphersuites);
5330 return PACKET_remaining(&s->clienthello->ciphersuites);
5333 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5335 if (s->clienthello == NULL)
5338 *out = s->clienthello->compressions;
5339 return s->clienthello->compressions_len;
5342 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5348 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5350 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5351 ext = s->clienthello->pre_proc_exts + i;
5360 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5361 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5362 ERR_R_MALLOC_FAILURE);
5365 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5366 ext = s->clienthello->pre_proc_exts + i;
5368 if (ext->received_order >= num)
5370 present[ext->received_order] = ext->type;
5377 OPENSSL_free(present);
5381 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5387 if (s->clienthello == NULL)
5389 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5390 r = s->clienthello->pre_proc_exts + i;
5391 if (r->present && r->type == type) {
5393 *out = PACKET_data(&r->data);
5395 *outlen = PACKET_remaining(&r->data);
5402 int SSL_free_buffers(SSL *ssl)
5404 RECORD_LAYER *rl = &ssl->rlayer;
5406 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5409 RECORD_LAYER_release(rl);
5413 int SSL_alloc_buffers(SSL *ssl)
5415 return ssl3_setup_buffers(ssl);
5418 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5420 ctx->keylog_callback = cb;
5423 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5425 return ctx->keylog_callback;
5428 static int nss_keylog_int(const char *prefix,
5430 const uint8_t *parameter_1,
5431 size_t parameter_1_len,
5432 const uint8_t *parameter_2,
5433 size_t parameter_2_len)
5436 char *cursor = NULL;
5441 if (ssl->ctx->keylog_callback == NULL)
5445 * Our output buffer will contain the following strings, rendered with
5446 * space characters in between, terminated by a NULL character: first the
5447 * prefix, then the first parameter, then the second parameter. The
5448 * meaning of each parameter depends on the specific key material being
5449 * logged. Note that the first and second parameters are encoded in
5450 * hexadecimal, so we need a buffer that is twice their lengths.
5452 prefix_len = strlen(prefix);
5453 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5454 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5455 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5456 ERR_R_MALLOC_FAILURE);
5460 strcpy(cursor, prefix);
5461 cursor += prefix_len;
5464 for (i = 0; i < parameter_1_len; i++) {
5465 sprintf(cursor, "%02x", parameter_1[i]);
5470 for (i = 0; i < parameter_2_len; i++) {
5471 sprintf(cursor, "%02x", parameter_2[i]);
5476 ssl->ctx->keylog_callback(ssl, (const char *)out);
5477 OPENSSL_clear_free(out, out_len);
5482 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5483 const uint8_t *encrypted_premaster,
5484 size_t encrypted_premaster_len,
5485 const uint8_t *premaster,
5486 size_t premaster_len)
5488 if (encrypted_premaster_len < 8) {
5489 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5490 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5494 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5495 return nss_keylog_int("RSA",
5497 encrypted_premaster,
5503 int ssl_log_secret(SSL *ssl,
5505 const uint8_t *secret,
5508 return nss_keylog_int(label,
5510 ssl->s3.client_random,
5516 #define SSLV2_CIPHER_LEN 3
5518 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5522 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5524 if (PACKET_remaining(cipher_suites) == 0) {
5525 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5526 SSL_R_NO_CIPHERS_SPECIFIED);
5530 if (PACKET_remaining(cipher_suites) % n != 0) {
5531 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5532 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5536 OPENSSL_free(s->s3.tmp.ciphers_raw);
5537 s->s3.tmp.ciphers_raw = NULL;
5538 s->s3.tmp.ciphers_rawlen = 0;
5541 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5542 PACKET sslv2ciphers = *cipher_suites;
5543 unsigned int leadbyte;
5547 * We store the raw ciphers list in SSLv3+ format so we need to do some
5548 * preprocessing to convert the list first. If there are any SSLv2 only
5549 * ciphersuites with a non-zero leading byte then we are going to
5550 * slightly over allocate because we won't store those. But that isn't a
5553 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5554 s->s3.tmp.ciphers_raw = raw;
5556 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5557 ERR_R_MALLOC_FAILURE);
5560 for (s->s3.tmp.ciphers_rawlen = 0;
5561 PACKET_remaining(&sslv2ciphers) > 0;
5562 raw += TLS_CIPHER_LEN) {
5563 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5565 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5568 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5569 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5571 OPENSSL_free(s->s3.tmp.ciphers_raw);
5572 s->s3.tmp.ciphers_raw = NULL;
5573 s->s3.tmp.ciphers_rawlen = 0;
5577 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5579 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5580 &s->s3.tmp.ciphers_rawlen)) {
5581 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5582 ERR_R_INTERNAL_ERROR);
5588 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5589 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5590 STACK_OF(SSL_CIPHER) **scsvs)
5594 if (!PACKET_buf_init(&pkt, bytes, len))
5596 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5599 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5600 STACK_OF(SSL_CIPHER) **skp,
5601 STACK_OF(SSL_CIPHER) **scsvs_out,
5602 int sslv2format, int fatal)
5604 const SSL_CIPHER *c;
5605 STACK_OF(SSL_CIPHER) *sk = NULL;
5606 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5608 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5609 unsigned char cipher[SSLV2_CIPHER_LEN];
5611 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5613 if (PACKET_remaining(cipher_suites) == 0) {
5615 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5616 SSL_R_NO_CIPHERS_SPECIFIED);
5618 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5622 if (PACKET_remaining(cipher_suites) % n != 0) {
5624 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5625 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5627 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5628 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5632 sk = sk_SSL_CIPHER_new_null();
5633 scsvs = sk_SSL_CIPHER_new_null();
5634 if (sk == NULL || scsvs == NULL) {
5636 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5637 ERR_R_MALLOC_FAILURE);
5639 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5643 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5645 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5646 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5647 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5649 if (sslv2format && cipher[0] != '\0')
5652 /* For SSLv2-compat, ignore leading 0-byte. */
5653 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5655 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5656 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5658 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5659 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5661 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5666 if (PACKET_remaining(cipher_suites) > 0) {
5668 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5671 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5678 sk_SSL_CIPHER_free(sk);
5679 if (scsvs_out != NULL)
5682 sk_SSL_CIPHER_free(scsvs);
5685 sk_SSL_CIPHER_free(sk);
5686 sk_SSL_CIPHER_free(scsvs);
5690 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5692 ctx->max_early_data = max_early_data;
5697 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5699 return ctx->max_early_data;
5702 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5704 s->max_early_data = max_early_data;
5709 uint32_t SSL_get_max_early_data(const SSL *s)
5711 return s->max_early_data;
5714 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5716 ctx->recv_max_early_data = recv_max_early_data;
5721 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5723 return ctx->recv_max_early_data;
5726 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5728 s->recv_max_early_data = recv_max_early_data;
5733 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5735 return s->recv_max_early_data;
5738 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5740 /* Return any active Max Fragment Len extension */
5741 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5742 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5744 /* return current SSL connection setting */
5745 return ssl->max_send_fragment;
5748 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5750 /* Return a value regarding an active Max Fragment Len extension */
5751 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5752 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5753 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5755 /* else limit |split_send_fragment| to current |max_send_fragment| */
5756 if (ssl->split_send_fragment > ssl->max_send_fragment)
5757 return ssl->max_send_fragment;
5759 /* return current SSL connection setting */
5760 return ssl->split_send_fragment;
5763 int SSL_stateless(SSL *s)
5767 /* Ensure there is no state left over from a previous invocation */
5773 s->s3.flags |= TLS1_FLAGS_STATELESS;
5774 ret = SSL_accept(s);
5775 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5777 if (ret > 0 && s->ext.cookieok)
5780 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5786 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5788 ctx->pha_enabled = val;
5791 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5793 ssl->pha_enabled = val;
5796 int SSL_verify_client_post_handshake(SSL *ssl)
5798 if (!SSL_IS_TLS13(ssl)) {
5799 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5803 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5807 if (!SSL_is_init_finished(ssl)) {
5808 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5812 switch (ssl->post_handshake_auth) {
5814 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5817 case SSL_PHA_EXT_SENT:
5818 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5820 case SSL_PHA_EXT_RECEIVED:
5822 case SSL_PHA_REQUEST_PENDING:
5823 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5825 case SSL_PHA_REQUESTED:
5826 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5830 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5832 /* checks verify_mode and algorithm_auth */
5833 if (!send_certificate_request(ssl)) {
5834 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5835 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5839 ossl_statem_set_in_init(ssl, 1);
5843 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5844 SSL_CTX_generate_session_ticket_fn gen_cb,
5845 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5848 ctx->generate_ticket_cb = gen_cb;
5849 ctx->decrypt_ticket_cb = dec_cb;
5850 ctx->ticket_cb_data = arg;
5854 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5855 SSL_allow_early_data_cb_fn cb,
5858 ctx->allow_early_data_cb = cb;
5859 ctx->allow_early_data_cb_data = arg;
5862 void SSL_set_allow_early_data_cb(SSL *s,
5863 SSL_allow_early_data_cb_fn cb,
5866 s->allow_early_data_cb = cb;
5867 s->allow_early_data_cb_data = arg;
5870 const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5872 const char *properties)
5876 #ifndef OPENSSL_NO_ENGINE
5880 * If there is an Engine available for this cipher we use the "implicit"
5881 * form to ensure we use that engine later.
5883 eng = ENGINE_get_cipher_engine(nid);
5886 return EVP_get_cipherbynid(nid);
5890 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5892 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5898 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5900 /* Don't up-ref an implicit EVP_CIPHER */
5901 if (EVP_CIPHER_provider(cipher) == NULL)
5905 * The cipher was explicitly fetched and therefore it is safe to cast
5908 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5911 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5916 if (EVP_CIPHER_provider(cipher) != NULL) {
5918 * The cipher was explicitly fetched and therefore it is safe to cast
5921 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5925 const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5927 const char *properties)
5931 #ifndef OPENSSL_NO_ENGINE
5935 * If there is an Engine available for this digest we use the "implicit"
5936 * form to ensure we use that engine later.
5938 eng = ENGINE_get_digest_engine(nid);
5941 return EVP_get_digestbynid(nid);
5945 /* Otherwise we do an explicit fetch */
5947 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5952 int ssl_evp_md_up_ref(const EVP_MD *md)
5954 /* Don't up-ref an implicit EVP_MD */
5955 if (EVP_MD_provider(md) == NULL)
5959 * The digest was explicitly fetched and therefore it is safe to cast
5962 return EVP_MD_up_ref((EVP_MD *)md);
5965 void ssl_evp_md_free(const EVP_MD *md)
5970 if (EVP_MD_provider(md) != NULL) {
5972 * The digest was explicitly fetched and therefore it is safe to cast
5975 EVP_MD_free((EVP_MD *)md);