2 * Copyright 1995-2022 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 OpenSSL license (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
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 "internal/cryptlib.h"
25 #include "internal/refcount.h"
26 #include "internal/ktls.h"
28 const char SSL_version_str[] = OPENSSL_VERSION_TEXT;
30 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
35 return ssl_undefined_function(ssl);
38 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
44 return ssl_undefined_function(ssl);
47 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
48 unsigned char *s, size_t t, size_t *u)
54 return ssl_undefined_function(ssl);
57 static int ssl_undefined_function_4(SSL *ssl, int r)
60 return ssl_undefined_function(ssl);
63 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
69 return ssl_undefined_function(ssl);
72 static int ssl_undefined_function_6(int r)
75 return ssl_undefined_function(NULL);
78 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
79 const char *t, size_t u,
80 const unsigned char *v, size_t w, int x)
89 return ssl_undefined_function(ssl);
92 SSL3_ENC_METHOD ssl3_undef_enc_method = {
93 ssl_undefined_function_1,
94 ssl_undefined_function_2,
95 ssl_undefined_function,
96 ssl_undefined_function_3,
97 ssl_undefined_function_4,
98 ssl_undefined_function_5,
99 NULL, /* client_finished_label */
100 0, /* client_finished_label_len */
101 NULL, /* server_finished_label */
102 0, /* server_finished_label_len */
103 ssl_undefined_function_6,
104 ssl_undefined_function_7,
107 struct ssl_async_args {
111 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
113 int (*func_read) (SSL *, void *, size_t, size_t *);
114 int (*func_write) (SSL *, const void *, size_t, size_t *);
115 int (*func_other) (SSL *);
119 static const struct {
125 DANETLS_MATCHING_FULL, 0, NID_undef
128 DANETLS_MATCHING_2256, 1, NID_sha256
131 DANETLS_MATCHING_2512, 2, NID_sha512
135 static int dane_ctx_enable(struct dane_ctx_st *dctx)
137 const EVP_MD **mdevp;
139 uint8_t mdmax = DANETLS_MATCHING_LAST;
140 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
143 if (dctx->mdevp != NULL)
146 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
147 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
149 if (mdord == NULL || mdevp == NULL) {
152 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
156 /* Install default entries */
157 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
160 if (dane_mds[i].nid == NID_undef ||
161 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
163 mdevp[dane_mds[i].mtype] = md;
164 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
174 static void dane_ctx_final(struct dane_ctx_st *dctx)
176 OPENSSL_free(dctx->mdevp);
179 OPENSSL_free(dctx->mdord);
184 static void tlsa_free(danetls_record *t)
188 OPENSSL_free(t->data);
189 EVP_PKEY_free(t->spki);
193 static void dane_final(SSL_DANE *dane)
195 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
198 sk_X509_pop_free(dane->certs, X509_free);
201 X509_free(dane->mcert);
209 * dane_copy - Copy dane configuration, sans verification state.
211 static int ssl_dane_dup(SSL *to, SSL *from)
216 if (!DANETLS_ENABLED(&from->dane))
219 num = sk_danetls_record_num(from->dane.trecs);
220 dane_final(&to->dane);
221 to->dane.flags = from->dane.flags;
222 to->dane.dctx = &to->ctx->dane;
223 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
225 if (to->dane.trecs == NULL) {
226 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
230 for (i = 0; i < num; ++i) {
231 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
233 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
234 t->data, t->dlen) <= 0)
240 static int dane_mtype_set(struct dane_ctx_st *dctx,
241 const EVP_MD *md, uint8_t mtype, uint8_t ord)
245 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
246 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
250 if (mtype > dctx->mdmax) {
251 const EVP_MD **mdevp;
253 int n = ((int)mtype) + 1;
255 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
257 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
262 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
264 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
269 /* Zero-fill any gaps */
270 for (i = dctx->mdmax + 1; i < mtype; ++i) {
278 dctx->mdevp[mtype] = md;
279 /* Coerce ordinal of disabled matching types to 0 */
280 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
285 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
287 if (mtype > dane->dctx->mdmax)
289 return dane->dctx->mdevp[mtype];
292 static int dane_tlsa_add(SSL_DANE *dane,
295 uint8_t mtype, unsigned const char *data, size_t dlen)
298 const EVP_MD *md = NULL;
299 int ilen = (int)dlen;
303 if (dane->trecs == NULL) {
304 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
308 if (ilen < 0 || dlen != (size_t)ilen) {
309 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
313 if (usage > DANETLS_USAGE_LAST) {
314 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
318 if (selector > DANETLS_SELECTOR_LAST) {
319 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
323 if (mtype != DANETLS_MATCHING_FULL) {
324 md = tlsa_md_get(dane, mtype);
326 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
331 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
332 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
336 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
340 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
341 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
346 t->selector = selector;
348 t->data = OPENSSL_malloc(dlen);
349 if (t->data == NULL) {
351 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
354 memcpy(t->data, data, dlen);
357 /* Validate and cache full certificate or public key */
358 if (mtype == DANETLS_MATCHING_FULL) {
359 const unsigned char *p = data;
361 EVP_PKEY *pkey = NULL;
364 case DANETLS_SELECTOR_CERT:
365 if (!d2i_X509(&cert, &p, ilen) || p < data ||
366 dlen != (size_t)(p - data)) {
368 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
371 if (X509_get0_pubkey(cert) == NULL) {
373 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
377 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
383 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
384 * records that contain full certificates of trust-anchors that are
385 * not present in the wire chain. For usage PKIX-TA(0), we augment
386 * the chain with untrusted Full(0) certificates from DNS, in case
387 * they are missing from the chain.
389 if ((dane->certs == NULL &&
390 (dane->certs = sk_X509_new_null()) == NULL) ||
391 !sk_X509_push(dane->certs, cert)) {
392 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
399 case DANETLS_SELECTOR_SPKI:
400 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
401 dlen != (size_t)(p - data)) {
403 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
408 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
409 * records that contain full bare keys of trust-anchors that are
410 * not present in the wire chain.
412 if (usage == DANETLS_USAGE_DANE_TA)
421 * Find the right insertion point for the new record.
423 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
424 * they can be processed first, as they require no chain building, and no
425 * expiration or hostname checks. Because DANE-EE(3) is numerically
426 * largest, this is accomplished via descending sort by "usage".
428 * We also sort in descending order by matching ordinal to simplify
429 * the implementation of digest agility in the verification code.
431 * The choice of order for the selector is not significant, so we
432 * use the same descending order for consistency.
434 num = sk_danetls_record_num(dane->trecs);
435 for (i = 0; i < num; ++i) {
436 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
438 if (rec->usage > usage)
440 if (rec->usage < usage)
442 if (rec->selector > selector)
444 if (rec->selector < selector)
446 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
451 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
453 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
456 dane->umask |= DANETLS_USAGE_BIT(usage);
462 * Return 0 if there is only one version configured and it was disabled
463 * at configure time. Return 1 otherwise.
465 static int ssl_check_allowed_versions(int min_version, int max_version)
467 int minisdtls = 0, maxisdtls = 0;
469 /* Figure out if we're doing DTLS versions or TLS versions */
470 if (min_version == DTLS1_BAD_VER
471 || min_version >> 8 == DTLS1_VERSION_MAJOR)
473 if (max_version == DTLS1_BAD_VER
474 || max_version >> 8 == DTLS1_VERSION_MAJOR)
476 /* A wildcard version of 0 could be DTLS or TLS. */
477 if ((minisdtls && !maxisdtls && max_version != 0)
478 || (maxisdtls && !minisdtls && min_version != 0)) {
479 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
483 if (minisdtls || maxisdtls) {
484 /* Do DTLS version checks. */
485 if (min_version == 0)
486 /* Ignore DTLS1_BAD_VER */
487 min_version = DTLS1_VERSION;
488 if (max_version == 0)
489 max_version = DTLS1_2_VERSION;
490 #ifdef OPENSSL_NO_DTLS1_2
491 if (max_version == DTLS1_2_VERSION)
492 max_version = DTLS1_VERSION;
494 #ifdef OPENSSL_NO_DTLS1
495 if (min_version == DTLS1_VERSION)
496 min_version = DTLS1_2_VERSION;
498 /* Done massaging versions; do the check. */
500 #ifdef OPENSSL_NO_DTLS1
501 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
502 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
504 #ifdef OPENSSL_NO_DTLS1_2
505 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
506 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
511 /* Regular TLS version checks. */
512 if (min_version == 0)
513 min_version = SSL3_VERSION;
514 if (max_version == 0)
515 max_version = TLS1_3_VERSION;
516 #ifdef OPENSSL_NO_TLS1_3
517 if (max_version == TLS1_3_VERSION)
518 max_version = TLS1_2_VERSION;
520 #ifdef OPENSSL_NO_TLS1_2
521 if (max_version == TLS1_2_VERSION)
522 max_version = TLS1_1_VERSION;
524 #ifdef OPENSSL_NO_TLS1_1
525 if (max_version == TLS1_1_VERSION)
526 max_version = TLS1_VERSION;
528 #ifdef OPENSSL_NO_TLS1
529 if (max_version == TLS1_VERSION)
530 max_version = SSL3_VERSION;
532 #ifdef OPENSSL_NO_SSL3
533 if (min_version == SSL3_VERSION)
534 min_version = TLS1_VERSION;
536 #ifdef OPENSSL_NO_TLS1
537 if (min_version == TLS1_VERSION)
538 min_version = TLS1_1_VERSION;
540 #ifdef OPENSSL_NO_TLS1_1
541 if (min_version == TLS1_1_VERSION)
542 min_version = TLS1_2_VERSION;
544 #ifdef OPENSSL_NO_TLS1_2
545 if (min_version == TLS1_2_VERSION)
546 min_version = TLS1_3_VERSION;
548 /* Done massaging versions; do the check. */
550 #ifdef OPENSSL_NO_SSL3
551 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
553 #ifdef OPENSSL_NO_TLS1
554 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
556 #ifdef OPENSSL_NO_TLS1_1
557 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
559 #ifdef OPENSSL_NO_TLS1_2
560 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
562 #ifdef OPENSSL_NO_TLS1_3
563 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
571 static void clear_ciphers(SSL *s)
573 /* clear the current cipher */
574 ssl_clear_cipher_ctx(s);
575 ssl_clear_hash_ctx(&s->read_hash);
576 ssl_clear_hash_ctx(&s->write_hash);
579 int SSL_clear(SSL *s)
581 if (s->method == NULL) {
582 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
586 if (ssl_clear_bad_session(s)) {
587 SSL_SESSION_free(s->session);
590 SSL_SESSION_free(s->psksession);
591 s->psksession = NULL;
592 OPENSSL_free(s->psksession_id);
593 s->psksession_id = NULL;
594 s->psksession_id_len = 0;
595 s->hello_retry_request = 0;
602 if (s->renegotiate) {
603 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
607 ossl_statem_clear(s);
609 s->version = s->method->version;
610 s->client_version = s->version;
611 s->rwstate = SSL_NOTHING;
613 BUF_MEM_free(s->init_buf);
618 s->key_update = SSL_KEY_UPDATE_NONE;
620 EVP_MD_CTX_free(s->pha_dgst);
623 /* Reset DANE verification result state */
626 X509_free(s->dane.mcert);
627 s->dane.mcert = NULL;
628 s->dane.mtlsa = NULL;
630 /* Clear the verification result peername */
631 X509_VERIFY_PARAM_move_peername(s->param, NULL);
633 /* Clear any shared connection state */
634 OPENSSL_free(s->shared_sigalgs);
635 s->shared_sigalgs = NULL;
636 s->shared_sigalgslen = 0;
639 * Check to see if we were changed into a different method, if so, revert
642 if (s->method != s->ctx->method) {
643 s->method->ssl_free(s);
644 s->method = s->ctx->method;
645 if (!s->method->ssl_new(s))
648 if (!s->method->ssl_clear(s))
652 RECORD_LAYER_clear(&s->rlayer);
657 /** Used to change an SSL_CTXs default SSL method type */
658 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
660 STACK_OF(SSL_CIPHER) *sk;
664 if (!SSL_CTX_set_ciphersuites(ctx, TLS_DEFAULT_CIPHERSUITES)) {
665 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
668 sk = ssl_create_cipher_list(ctx->method,
669 ctx->tls13_ciphersuites,
671 &(ctx->cipher_list_by_id),
672 SSL_DEFAULT_CIPHER_LIST, ctx->cert);
673 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
674 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
680 SSL *SSL_new(SSL_CTX *ctx)
685 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
688 if (ctx->method == NULL) {
689 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
693 s = OPENSSL_zalloc(sizeof(*s));
698 s->lock = CRYPTO_THREAD_lock_new();
699 if (s->lock == NULL) {
705 RECORD_LAYER_init(&s->rlayer, s);
707 s->options = ctx->options;
708 s->dane.flags = ctx->dane.flags;
709 s->min_proto_version = ctx->min_proto_version;
710 s->max_proto_version = ctx->max_proto_version;
712 s->max_cert_list = ctx->max_cert_list;
713 s->max_early_data = ctx->max_early_data;
714 s->recv_max_early_data = ctx->recv_max_early_data;
715 s->num_tickets = ctx->num_tickets;
716 s->pha_enabled = ctx->pha_enabled;
718 /* Shallow copy of the ciphersuites stack */
719 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
720 if (s->tls13_ciphersuites == NULL)
724 * Earlier library versions used to copy the pointer to the CERT, not
725 * its contents; only when setting new parameters for the per-SSL
726 * copy, ssl_cert_new would be called (and the direct reference to
727 * the per-SSL_CTX settings would be lost, but those still were
728 * indirectly accessed for various purposes, and for that reason they
729 * used to be known as s->ctx->default_cert). Now we don't look at the
730 * SSL_CTX's CERT after having duplicated it once.
732 s->cert = ssl_cert_dup(ctx->cert);
736 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
737 s->msg_callback = ctx->msg_callback;
738 s->msg_callback_arg = ctx->msg_callback_arg;
739 s->verify_mode = ctx->verify_mode;
740 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
741 s->record_padding_cb = ctx->record_padding_cb;
742 s->record_padding_arg = ctx->record_padding_arg;
743 s->block_padding = ctx->block_padding;
744 s->sid_ctx_length = ctx->sid_ctx_length;
745 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
747 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
748 s->verify_callback = ctx->default_verify_callback;
749 s->generate_session_id = ctx->generate_session_id;
751 s->param = X509_VERIFY_PARAM_new();
752 if (s->param == NULL)
754 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
755 s->quiet_shutdown = ctx->quiet_shutdown;
757 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
758 s->max_send_fragment = ctx->max_send_fragment;
759 s->split_send_fragment = ctx->split_send_fragment;
760 s->max_pipelines = ctx->max_pipelines;
761 if (s->max_pipelines > 1)
762 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
763 if (ctx->default_read_buf_len > 0)
764 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
769 s->ext.debug_arg = NULL;
770 s->ext.ticket_expected = 0;
771 s->ext.status_type = ctx->ext.status_type;
772 s->ext.status_expected = 0;
773 s->ext.ocsp.ids = NULL;
774 s->ext.ocsp.exts = NULL;
775 s->ext.ocsp.resp = NULL;
776 s->ext.ocsp.resp_len = 0;
778 s->session_ctx = ctx;
779 #ifndef OPENSSL_NO_EC
780 if (ctx->ext.ecpointformats) {
781 s->ext.ecpointformats =
782 OPENSSL_memdup(ctx->ext.ecpointformats,
783 ctx->ext.ecpointformats_len);
784 if (!s->ext.ecpointformats) {
785 s->ext.ecpointformats_len = 0;
788 s->ext.ecpointformats_len =
789 ctx->ext.ecpointformats_len;
791 if (ctx->ext.supportedgroups) {
792 s->ext.supportedgroups =
793 OPENSSL_memdup(ctx->ext.supportedgroups,
794 ctx->ext.supportedgroups_len
795 * sizeof(*ctx->ext.supportedgroups));
796 if (!s->ext.supportedgroups) {
797 s->ext.supportedgroups_len = 0;
800 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
803 #ifndef OPENSSL_NO_NEXTPROTONEG
807 if (s->ctx->ext.alpn) {
808 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
809 if (s->ext.alpn == NULL) {
813 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
814 s->ext.alpn_len = s->ctx->ext.alpn_len;
817 s->verified_chain = NULL;
818 s->verify_result = X509_V_OK;
820 s->default_passwd_callback = ctx->default_passwd_callback;
821 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
823 s->method = ctx->method;
825 s->key_update = SSL_KEY_UPDATE_NONE;
827 s->allow_early_data_cb = ctx->allow_early_data_cb;
828 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
830 if (!s->method->ssl_new(s))
833 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
838 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
841 #ifndef OPENSSL_NO_PSK
842 s->psk_client_callback = ctx->psk_client_callback;
843 s->psk_server_callback = ctx->psk_server_callback;
845 s->psk_find_session_cb = ctx->psk_find_session_cb;
846 s->psk_use_session_cb = ctx->psk_use_session_cb;
850 #ifndef OPENSSL_NO_CT
851 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
852 ctx->ct_validation_callback_arg))
859 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
863 int SSL_is_dtls(const SSL *s)
865 return SSL_IS_DTLS(s) ? 1 : 0;
868 int SSL_up_ref(SSL *s)
872 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
875 REF_PRINT_COUNT("SSL", s);
876 REF_ASSERT_ISNT(i < 2);
877 return ((i > 1) ? 1 : 0);
880 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
881 unsigned int sid_ctx_len)
883 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
884 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
885 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
888 ctx->sid_ctx_length = sid_ctx_len;
889 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
894 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
895 unsigned int sid_ctx_len)
897 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
898 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
899 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
902 ssl->sid_ctx_length = sid_ctx_len;
903 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
908 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
910 CRYPTO_THREAD_write_lock(ctx->lock);
911 ctx->generate_session_id = cb;
912 CRYPTO_THREAD_unlock(ctx->lock);
916 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
918 CRYPTO_THREAD_write_lock(ssl->lock);
919 ssl->generate_session_id = cb;
920 CRYPTO_THREAD_unlock(ssl->lock);
924 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
928 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
929 * we can "construct" a session to give us the desired check - i.e. to
930 * find if there's a session in the hash table that would conflict with
931 * any new session built out of this id/id_len and the ssl_version in use
936 if (id_len > sizeof(r.session_id))
939 r.ssl_version = ssl->version;
940 r.session_id_length = id_len;
941 memcpy(r.session_id, id, id_len);
943 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
944 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
945 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
949 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
951 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
954 int SSL_set_purpose(SSL *s, int purpose)
956 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
959 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
961 return X509_VERIFY_PARAM_set_trust(s->param, trust);
964 int SSL_set_trust(SSL *s, int trust)
966 return X509_VERIFY_PARAM_set_trust(s->param, trust);
969 int SSL_set1_host(SSL *s, const char *hostname)
971 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
974 int SSL_add1_host(SSL *s, const char *hostname)
976 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
979 void SSL_set_hostflags(SSL *s, unsigned int flags)
981 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
984 const char *SSL_get0_peername(SSL *s)
986 return X509_VERIFY_PARAM_get0_peername(s->param);
989 int SSL_CTX_dane_enable(SSL_CTX *ctx)
991 return dane_ctx_enable(&ctx->dane);
994 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
996 unsigned long orig = ctx->dane.flags;
998 ctx->dane.flags |= flags;
1002 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1004 unsigned long orig = ctx->dane.flags;
1006 ctx->dane.flags &= ~flags;
1010 int SSL_dane_enable(SSL *s, const char *basedomain)
1012 SSL_DANE *dane = &s->dane;
1014 if (s->ctx->dane.mdmax == 0) {
1015 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1018 if (dane->trecs != NULL) {
1019 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1024 * Default SNI name. This rejects empty names, while set1_host below
1025 * accepts them and disables host name checks. To avoid side-effects with
1026 * invalid input, set the SNI name first.
1028 if (s->ext.hostname == NULL) {
1029 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1030 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1035 /* Primary RFC6125 reference identifier */
1036 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1037 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1043 dane->dctx = &s->ctx->dane;
1044 dane->trecs = sk_danetls_record_new_null();
1046 if (dane->trecs == NULL) {
1047 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1053 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1055 unsigned long orig = ssl->dane.flags;
1057 ssl->dane.flags |= flags;
1061 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1063 unsigned long orig = ssl->dane.flags;
1065 ssl->dane.flags &= ~flags;
1069 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1071 SSL_DANE *dane = &s->dane;
1073 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1077 *mcert = dane->mcert;
1079 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1084 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1085 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1087 SSL_DANE *dane = &s->dane;
1089 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1093 *usage = dane->mtlsa->usage;
1095 *selector = dane->mtlsa->selector;
1097 *mtype = dane->mtlsa->mtype;
1099 *data = dane->mtlsa->data;
1101 *dlen = dane->mtlsa->dlen;
1106 SSL_DANE *SSL_get0_dane(SSL *s)
1111 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1112 uint8_t mtype, unsigned const char *data, size_t dlen)
1114 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1117 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1120 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1123 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1125 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1128 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1130 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1133 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1138 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1143 void SSL_certs_clear(SSL *s)
1145 ssl_cert_clear_certs(s->cert);
1148 void SSL_free(SSL *s)
1154 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1155 REF_PRINT_COUNT("SSL", s);
1158 REF_ASSERT_ISNT(i < 0);
1160 X509_VERIFY_PARAM_free(s->param);
1161 dane_final(&s->dane);
1162 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1164 RECORD_LAYER_release(&s->rlayer);
1166 /* Ignore return value */
1167 ssl_free_wbio_buffer(s);
1169 BIO_free_all(s->wbio);
1171 BIO_free_all(s->rbio);
1174 BUF_MEM_free(s->init_buf);
1176 /* add extra stuff */
1177 sk_SSL_CIPHER_free(s->cipher_list);
1178 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1179 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1180 sk_SSL_CIPHER_free(s->peer_ciphers);
1182 /* Make the next call work :-) */
1183 if (s->session != NULL) {
1184 ssl_clear_bad_session(s);
1185 SSL_SESSION_free(s->session);
1187 SSL_SESSION_free(s->psksession);
1188 OPENSSL_free(s->psksession_id);
1192 ssl_cert_free(s->cert);
1193 OPENSSL_free(s->shared_sigalgs);
1194 /* Free up if allocated */
1196 OPENSSL_free(s->ext.hostname);
1197 SSL_CTX_free(s->session_ctx);
1198 #ifndef OPENSSL_NO_EC
1199 OPENSSL_free(s->ext.ecpointformats);
1200 OPENSSL_free(s->ext.peer_ecpointformats);
1201 OPENSSL_free(s->ext.supportedgroups);
1202 OPENSSL_free(s->ext.peer_supportedgroups);
1203 #endif /* OPENSSL_NO_EC */
1204 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1205 #ifndef OPENSSL_NO_OCSP
1206 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1208 #ifndef OPENSSL_NO_CT
1209 SCT_LIST_free(s->scts);
1210 OPENSSL_free(s->ext.scts);
1212 OPENSSL_free(s->ext.ocsp.resp);
1213 OPENSSL_free(s->ext.alpn);
1214 OPENSSL_free(s->ext.tls13_cookie);
1215 if (s->clienthello != NULL)
1216 OPENSSL_free(s->clienthello->pre_proc_exts);
1217 OPENSSL_free(s->clienthello);
1218 OPENSSL_free(s->pha_context);
1219 EVP_MD_CTX_free(s->pha_dgst);
1221 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1222 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1224 sk_X509_pop_free(s->verified_chain, X509_free);
1226 if (s->method != NULL)
1227 s->method->ssl_free(s);
1229 SSL_CTX_free(s->ctx);
1231 ASYNC_WAIT_CTX_free(s->waitctx);
1233 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1234 OPENSSL_free(s->ext.npn);
1237 #ifndef OPENSSL_NO_SRTP
1238 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1241 CRYPTO_THREAD_lock_free(s->lock);
1246 void SSL_set0_rbio(SSL *s, BIO *rbio)
1248 BIO_free_all(s->rbio);
1252 void SSL_set0_wbio(SSL *s, BIO *wbio)
1255 * If the output buffering BIO is still in place, remove it
1257 if (s->bbio != NULL)
1258 s->wbio = BIO_pop(s->wbio);
1260 BIO_free_all(s->wbio);
1263 /* Re-attach |bbio| to the new |wbio|. */
1264 if (s->bbio != NULL)
1265 s->wbio = BIO_push(s->bbio, s->wbio);
1268 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1271 * For historical reasons, this function has many different cases in
1272 * ownership handling.
1275 /* If nothing has changed, do nothing */
1276 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1280 * If the two arguments are equal then one fewer reference is granted by the
1281 * caller than we want to take
1283 if (rbio != NULL && rbio == wbio)
1287 * If only the wbio is changed only adopt one reference.
1289 if (rbio == SSL_get_rbio(s)) {
1290 SSL_set0_wbio(s, wbio);
1294 * There is an asymmetry here for historical reasons. If only the rbio is
1295 * changed AND the rbio and wbio were originally different, then we only
1296 * adopt one reference.
1298 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1299 SSL_set0_rbio(s, rbio);
1303 /* Otherwise, adopt both references. */
1304 SSL_set0_rbio(s, rbio);
1305 SSL_set0_wbio(s, wbio);
1308 BIO *SSL_get_rbio(const SSL *s)
1313 BIO *SSL_get_wbio(const SSL *s)
1315 if (s->bbio != NULL) {
1317 * If |bbio| is active, the true caller-configured BIO is its
1320 return BIO_next(s->bbio);
1325 int SSL_get_fd(const SSL *s)
1327 return SSL_get_rfd(s);
1330 int SSL_get_rfd(const SSL *s)
1335 b = SSL_get_rbio(s);
1336 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1338 BIO_get_fd(r, &ret);
1342 int SSL_get_wfd(const SSL *s)
1347 b = SSL_get_wbio(s);
1348 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1350 BIO_get_fd(r, &ret);
1354 #ifndef OPENSSL_NO_SOCK
1355 int SSL_set_fd(SSL *s, int fd)
1360 bio = BIO_new(BIO_s_socket());
1363 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1366 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1367 SSL_set_bio(s, bio, bio);
1368 #ifndef OPENSSL_NO_KTLS
1370 * The new socket is created successfully regardless of ktls_enable.
1371 * ktls_enable doesn't change any functionality of the socket, except
1372 * changing the setsockopt to enable the processing of ktls_start.
1373 * Thus, it is not a problem to call it for non-TLS sockets.
1376 #endif /* OPENSSL_NO_KTLS */
1382 int SSL_set_wfd(SSL *s, int fd)
1384 BIO *rbio = SSL_get_rbio(s);
1386 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1387 || (int)BIO_get_fd(rbio, NULL) != fd) {
1388 BIO *bio = BIO_new(BIO_s_socket());
1391 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1394 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1395 SSL_set0_wbio(s, bio);
1396 #ifndef OPENSSL_NO_KTLS
1398 * The new socket is created successfully regardless of ktls_enable.
1399 * ktls_enable doesn't change any functionality of the socket, except
1400 * changing the setsockopt to enable the processing of ktls_start.
1401 * Thus, it is not a problem to call it for non-TLS sockets.
1404 #endif /* OPENSSL_NO_KTLS */
1407 SSL_set0_wbio(s, rbio);
1412 int SSL_set_rfd(SSL *s, int fd)
1414 BIO *wbio = SSL_get_wbio(s);
1416 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1417 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1418 BIO *bio = BIO_new(BIO_s_socket());
1421 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1424 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1425 SSL_set0_rbio(s, bio);
1428 SSL_set0_rbio(s, wbio);
1435 /* return length of latest Finished message we sent, copy to 'buf' */
1436 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1440 if (s->s3 != NULL) {
1441 ret = s->s3->tmp.finish_md_len;
1444 memcpy(buf, s->s3->tmp.finish_md, count);
1449 /* return length of latest Finished message we expected, copy to 'buf' */
1450 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1454 if (s->s3 != NULL) {
1455 ret = s->s3->tmp.peer_finish_md_len;
1458 memcpy(buf, s->s3->tmp.peer_finish_md, count);
1463 int SSL_get_verify_mode(const SSL *s)
1465 return s->verify_mode;
1468 int SSL_get_verify_depth(const SSL *s)
1470 return X509_VERIFY_PARAM_get_depth(s->param);
1473 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1474 return s->verify_callback;
1477 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1479 return ctx->verify_mode;
1482 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1484 return X509_VERIFY_PARAM_get_depth(ctx->param);
1487 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1488 return ctx->default_verify_callback;
1491 void SSL_set_verify(SSL *s, int mode,
1492 int (*callback) (int ok, X509_STORE_CTX *ctx))
1494 s->verify_mode = mode;
1495 if (callback != NULL)
1496 s->verify_callback = callback;
1499 void SSL_set_verify_depth(SSL *s, int depth)
1501 X509_VERIFY_PARAM_set_depth(s->param, depth);
1504 void SSL_set_read_ahead(SSL *s, int yes)
1506 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1509 int SSL_get_read_ahead(const SSL *s)
1511 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1514 int SSL_pending(const SSL *s)
1516 size_t pending = s->method->ssl_pending(s);
1519 * SSL_pending cannot work properly if read-ahead is enabled
1520 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1521 * impossible to fix since SSL_pending cannot report errors that may be
1522 * observed while scanning the new data. (Note that SSL_pending() is
1523 * often used as a boolean value, so we'd better not return -1.)
1525 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1526 * we just return INT_MAX.
1528 return pending < INT_MAX ? (int)pending : INT_MAX;
1531 int SSL_has_pending(const SSL *s)
1534 * Similar to SSL_pending() but returns a 1 to indicate that we have
1535 * processed or unprocessed data available or 0 otherwise (as opposed to the
1536 * number of bytes available). Unlike SSL_pending() this will take into
1537 * account read_ahead data. A 1 return simply indicates that we have data.
1538 * That data may not result in any application data, or we may fail to parse
1539 * the records for some reason.
1542 /* Check buffered app data if any first */
1543 if (SSL_IS_DTLS(s)) {
1544 DTLS1_RECORD_DATA *rdata;
1547 iter = pqueue_iterator(s->rlayer.d->buffered_app_data.q);
1548 while ((item = pqueue_next(&iter)) != NULL) {
1550 if (rdata->rrec.length > 0)
1555 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1558 return RECORD_LAYER_read_pending(&s->rlayer);
1561 X509 *SSL_get_peer_certificate(const SSL *s)
1565 if ((s == NULL) || (s->session == NULL))
1568 r = s->session->peer;
1578 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1582 if ((s == NULL) || (s->session == NULL))
1585 r = s->session->peer_chain;
1588 * If we are a client, cert_chain includes the peer's own certificate; if
1589 * we are a server, it does not.
1596 * Now in theory, since the calling process own 't' it should be safe to
1597 * modify. We need to be able to read f without being hassled
1599 int SSL_copy_session_id(SSL *t, const SSL *f)
1602 /* Do we need to to SSL locking? */
1603 if (!SSL_set_session(t, SSL_get_session(f))) {
1608 * what if we are setup for one protocol version but want to talk another
1610 if (t->method != f->method) {
1611 t->method->ssl_free(t);
1612 t->method = f->method;
1613 if (t->method->ssl_new(t) == 0)
1617 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1618 ssl_cert_free(t->cert);
1620 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1627 /* Fix this so it checks all the valid key/cert options */
1628 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1630 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1631 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1634 if (ctx->cert->key->privatekey == NULL) {
1635 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1638 return X509_check_private_key
1639 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1642 /* Fix this function so that it takes an optional type parameter */
1643 int SSL_check_private_key(const SSL *ssl)
1646 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1649 if (ssl->cert->key->x509 == NULL) {
1650 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1653 if (ssl->cert->key->privatekey == NULL) {
1654 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1657 return X509_check_private_key(ssl->cert->key->x509,
1658 ssl->cert->key->privatekey);
1661 int SSL_waiting_for_async(SSL *s)
1669 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1671 ASYNC_WAIT_CTX *ctx = s->waitctx;
1675 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1678 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1679 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1681 ASYNC_WAIT_CTX *ctx = s->waitctx;
1685 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1689 int SSL_accept(SSL *s)
1691 if (s->handshake_func == NULL) {
1692 /* Not properly initialized yet */
1693 SSL_set_accept_state(s);
1696 return SSL_do_handshake(s);
1699 int SSL_connect(SSL *s)
1701 if (s->handshake_func == NULL) {
1702 /* Not properly initialized yet */
1703 SSL_set_connect_state(s);
1706 return SSL_do_handshake(s);
1709 long SSL_get_default_timeout(const SSL *s)
1711 return s->method->get_timeout();
1714 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1715 int (*func) (void *))
1718 if (s->waitctx == NULL) {
1719 s->waitctx = ASYNC_WAIT_CTX_new();
1720 if (s->waitctx == NULL)
1724 s->rwstate = SSL_NOTHING;
1725 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1726 sizeof(struct ssl_async_args))) {
1728 s->rwstate = SSL_NOTHING;
1729 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1732 s->rwstate = SSL_ASYNC_PAUSED;
1735 s->rwstate = SSL_ASYNC_NO_JOBS;
1741 s->rwstate = SSL_NOTHING;
1742 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1743 /* Shouldn't happen */
1748 static int ssl_io_intern(void *vargs)
1750 struct ssl_async_args *args;
1755 args = (struct ssl_async_args *)vargs;
1759 switch (args->type) {
1761 return args->f.func_read(s, buf, num, &s->asyncrw);
1763 return args->f.func_write(s, buf, num, &s->asyncrw);
1765 return args->f.func_other(s);
1770 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1772 if (s->handshake_func == NULL) {
1773 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1777 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1778 s->rwstate = SSL_NOTHING;
1782 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1783 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1784 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1788 * If we are a client and haven't received the ServerHello etc then we
1791 ossl_statem_check_finish_init(s, 0);
1793 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1794 struct ssl_async_args args;
1800 args.type = READFUNC;
1801 args.f.func_read = s->method->ssl_read;
1803 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1804 *readbytes = s->asyncrw;
1807 return s->method->ssl_read(s, buf, num, readbytes);
1811 int SSL_read(SSL *s, void *buf, int num)
1817 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1821 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1824 * The cast is safe here because ret should be <= INT_MAX because num is
1828 ret = (int)readbytes;
1833 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1835 int ret = ssl_read_internal(s, buf, num, readbytes);
1842 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1847 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1848 return SSL_READ_EARLY_DATA_ERROR;
1851 switch (s->early_data_state) {
1852 case SSL_EARLY_DATA_NONE:
1853 if (!SSL_in_before(s)) {
1854 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1855 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1856 return SSL_READ_EARLY_DATA_ERROR;
1860 case SSL_EARLY_DATA_ACCEPT_RETRY:
1861 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1862 ret = SSL_accept(s);
1865 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1866 return SSL_READ_EARLY_DATA_ERROR;
1870 case SSL_EARLY_DATA_READ_RETRY:
1871 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1872 s->early_data_state = SSL_EARLY_DATA_READING;
1873 ret = SSL_read_ex(s, buf, num, readbytes);
1875 * State machine will update early_data_state to
1876 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1879 if (ret > 0 || (ret <= 0 && s->early_data_state
1880 != SSL_EARLY_DATA_FINISHED_READING)) {
1881 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1882 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1883 : SSL_READ_EARLY_DATA_ERROR;
1886 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1889 return SSL_READ_EARLY_DATA_FINISH;
1892 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1893 return SSL_READ_EARLY_DATA_ERROR;
1897 int SSL_get_early_data_status(const SSL *s)
1899 return s->ext.early_data;
1902 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1904 if (s->handshake_func == NULL) {
1905 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1909 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1912 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1913 struct ssl_async_args args;
1919 args.type = READFUNC;
1920 args.f.func_read = s->method->ssl_peek;
1922 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1923 *readbytes = s->asyncrw;
1926 return s->method->ssl_peek(s, buf, num, readbytes);
1930 int SSL_peek(SSL *s, void *buf, int num)
1936 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1940 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1943 * The cast is safe here because ret should be <= INT_MAX because num is
1947 ret = (int)readbytes;
1953 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1955 int ret = ssl_peek_internal(s, buf, num, readbytes);
1962 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1964 if (s->handshake_func == NULL) {
1965 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1969 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1970 s->rwstate = SSL_NOTHING;
1971 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1975 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1976 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1977 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1978 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1981 /* If we are a client and haven't sent the Finished we better do that */
1982 ossl_statem_check_finish_init(s, 1);
1984 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1986 struct ssl_async_args args;
1989 args.buf = (void *)buf;
1991 args.type = WRITEFUNC;
1992 args.f.func_write = s->method->ssl_write;
1994 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1995 *written = s->asyncrw;
1998 return s->method->ssl_write(s, buf, num, written);
2002 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2006 if (s->handshake_func == NULL) {
2007 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2011 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2012 s->rwstate = SSL_NOTHING;
2013 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2017 if (!BIO_get_ktls_send(s->wbio)) {
2018 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2022 /* If we have an alert to send, lets send it */
2023 if (s->s3->alert_dispatch) {
2024 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2026 /* SSLfatal() already called if appropriate */
2029 /* if it went, fall through and send more stuff */
2032 s->rwstate = SSL_WRITING;
2033 if (BIO_flush(s->wbio) <= 0) {
2034 if (!BIO_should_retry(s->wbio)) {
2035 s->rwstate = SSL_NOTHING;
2038 set_sys_error(EAGAIN);
2044 #ifdef OPENSSL_NO_KTLS
2045 SYSerr(SSL_F_SSL_SENDFILE, ERR_R_INTERNAL_ERROR);
2046 ERR_add_error_data(1, "calling sendfile()");
2049 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2051 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2052 if ((get_last_sys_error() == EAGAIN) ||
2053 (get_last_sys_error() == EINTR) ||
2054 (get_last_sys_error() == EBUSY))
2055 BIO_set_retry_write(s->wbio);
2058 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2061 s->rwstate = SSL_NOTHING;
2066 int SSL_write(SSL *s, const void *buf, int num)
2072 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2076 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2079 * The cast is safe here because ret should be <= INT_MAX because num is
2088 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2090 int ret = ssl_write_internal(s, buf, num, written);
2097 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2099 int ret, early_data_state;
2101 uint32_t partialwrite;
2103 switch (s->early_data_state) {
2104 case SSL_EARLY_DATA_NONE:
2106 || !SSL_in_before(s)
2107 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2108 && (s->psk_use_session_cb == NULL))) {
2109 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2110 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2115 case SSL_EARLY_DATA_CONNECT_RETRY:
2116 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2117 ret = SSL_connect(s);
2120 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2125 case SSL_EARLY_DATA_WRITE_RETRY:
2126 s->early_data_state = SSL_EARLY_DATA_WRITING;
2128 * We disable partial write for early data because we don't keep track
2129 * of how many bytes we've written between the SSL_write_ex() call and
2130 * the flush if the flush needs to be retried)
2132 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2133 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2134 ret = SSL_write_ex(s, buf, num, &writtmp);
2135 s->mode |= partialwrite;
2137 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2140 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2143 case SSL_EARLY_DATA_WRITE_FLUSH:
2144 /* The buffering BIO is still in place so we need to flush it */
2145 if (statem_flush(s) != 1)
2148 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2151 case SSL_EARLY_DATA_FINISHED_READING:
2152 case SSL_EARLY_DATA_READ_RETRY:
2153 early_data_state = s->early_data_state;
2154 /* We are a server writing to an unauthenticated client */
2155 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2156 ret = SSL_write_ex(s, buf, num, written);
2157 /* The buffering BIO is still in place */
2159 (void)BIO_flush(s->wbio);
2160 s->early_data_state = early_data_state;
2164 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2169 int SSL_shutdown(SSL *s)
2172 * Note that this function behaves differently from what one might
2173 * expect. Return values are 0 for no success (yet), 1 for success; but
2174 * calling it once is usually not enough, even if blocking I/O is used
2175 * (see ssl3_shutdown).
2178 if (s->handshake_func == NULL) {
2179 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2183 if (!SSL_in_init(s)) {
2184 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2185 struct ssl_async_args args;
2187 memset(&args, 0, sizeof(args));
2189 args.type = OTHERFUNC;
2190 args.f.func_other = s->method->ssl_shutdown;
2192 return ssl_start_async_job(s, &args, ssl_io_intern);
2194 return s->method->ssl_shutdown(s);
2197 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2202 int SSL_key_update(SSL *s, int updatetype)
2205 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2206 * negotiated, and that it is appropriate to call SSL_key_update() instead
2207 * of SSL_renegotiate().
2209 if (!SSL_IS_TLS13(s)) {
2210 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2214 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2215 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2216 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2220 if (!SSL_is_init_finished(s)) {
2221 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2225 if (RECORD_LAYER_write_pending(&s->rlayer)) {
2226 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_BAD_WRITE_RETRY);
2230 ossl_statem_set_in_init(s, 1);
2231 s->key_update = updatetype;
2235 int SSL_get_key_update_type(const SSL *s)
2237 return s->key_update;
2240 int SSL_renegotiate(SSL *s)
2242 if (SSL_IS_TLS13(s)) {
2243 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2247 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2248 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2255 return s->method->ssl_renegotiate(s);
2258 int SSL_renegotiate_abbreviated(SSL *s)
2260 if (SSL_IS_TLS13(s)) {
2261 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2265 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2266 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2273 return s->method->ssl_renegotiate(s);
2276 int SSL_renegotiate_pending(const SSL *s)
2279 * becomes true when negotiation is requested; false again once a
2280 * handshake has finished
2282 return (s->renegotiate != 0);
2285 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2290 case SSL_CTRL_GET_READ_AHEAD:
2291 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2292 case SSL_CTRL_SET_READ_AHEAD:
2293 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2294 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2297 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2298 s->msg_callback_arg = parg;
2302 return (s->mode |= larg);
2303 case SSL_CTRL_CLEAR_MODE:
2304 return (s->mode &= ~larg);
2305 case SSL_CTRL_GET_MAX_CERT_LIST:
2306 return (long)s->max_cert_list;
2307 case SSL_CTRL_SET_MAX_CERT_LIST:
2310 l = (long)s->max_cert_list;
2311 s->max_cert_list = (size_t)larg;
2313 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2314 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2316 #ifndef OPENSSL_NO_KTLS
2317 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2319 #endif /* OPENSSL_NO_KTLS */
2320 s->max_send_fragment = larg;
2321 if (s->max_send_fragment < s->split_send_fragment)
2322 s->split_send_fragment = s->max_send_fragment;
2324 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2325 if ((size_t)larg > s->max_send_fragment || larg == 0)
2327 s->split_send_fragment = larg;
2329 case SSL_CTRL_SET_MAX_PIPELINES:
2330 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2332 s->max_pipelines = larg;
2334 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2336 case SSL_CTRL_GET_RI_SUPPORT:
2338 return s->s3->send_connection_binding;
2341 case SSL_CTRL_CERT_FLAGS:
2342 return (s->cert->cert_flags |= larg);
2343 case SSL_CTRL_CLEAR_CERT_FLAGS:
2344 return (s->cert->cert_flags &= ~larg);
2346 case SSL_CTRL_GET_RAW_CIPHERLIST:
2348 if (s->s3->tmp.ciphers_raw == NULL)
2350 *(unsigned char **)parg = s->s3->tmp.ciphers_raw;
2351 return (int)s->s3->tmp.ciphers_rawlen;
2353 return TLS_CIPHER_LEN;
2355 case SSL_CTRL_GET_EXTMS_SUPPORT:
2356 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2358 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2362 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2363 return ssl_check_allowed_versions(larg, s->max_proto_version)
2364 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2365 &s->min_proto_version);
2366 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2367 return s->min_proto_version;
2368 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2369 return ssl_check_allowed_versions(s->min_proto_version, larg)
2370 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2371 &s->max_proto_version);
2372 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2373 return s->max_proto_version;
2375 return s->method->ssl_ctrl(s, cmd, larg, parg);
2379 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2382 case SSL_CTRL_SET_MSG_CALLBACK:
2383 s->msg_callback = (void (*)
2384 (int write_p, int version, int content_type,
2385 const void *buf, size_t len, SSL *ssl,
2390 return s->method->ssl_callback_ctrl(s, cmd, fp);
2394 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2396 return ctx->sessions;
2399 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2402 /* For some cases with ctx == NULL perform syntax checks */
2405 #ifndef OPENSSL_NO_EC
2406 case SSL_CTRL_SET_GROUPS_LIST:
2407 return tls1_set_groups_list(NULL, NULL, parg);
2409 case SSL_CTRL_SET_SIGALGS_LIST:
2410 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2411 return tls1_set_sigalgs_list(NULL, parg, 0);
2418 case SSL_CTRL_GET_READ_AHEAD:
2419 return ctx->read_ahead;
2420 case SSL_CTRL_SET_READ_AHEAD:
2421 l = ctx->read_ahead;
2422 ctx->read_ahead = larg;
2425 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2426 ctx->msg_callback_arg = parg;
2429 case SSL_CTRL_GET_MAX_CERT_LIST:
2430 return (long)ctx->max_cert_list;
2431 case SSL_CTRL_SET_MAX_CERT_LIST:
2434 l = (long)ctx->max_cert_list;
2435 ctx->max_cert_list = (size_t)larg;
2438 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2441 l = (long)ctx->session_cache_size;
2442 ctx->session_cache_size = (size_t)larg;
2444 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2445 return (long)ctx->session_cache_size;
2446 case SSL_CTRL_SET_SESS_CACHE_MODE:
2447 l = ctx->session_cache_mode;
2448 ctx->session_cache_mode = larg;
2450 case SSL_CTRL_GET_SESS_CACHE_MODE:
2451 return ctx->session_cache_mode;
2453 case SSL_CTRL_SESS_NUMBER:
2454 return lh_SSL_SESSION_num_items(ctx->sessions);
2455 case SSL_CTRL_SESS_CONNECT:
2456 return tsan_load(&ctx->stats.sess_connect);
2457 case SSL_CTRL_SESS_CONNECT_GOOD:
2458 return tsan_load(&ctx->stats.sess_connect_good);
2459 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2460 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2461 case SSL_CTRL_SESS_ACCEPT:
2462 return tsan_load(&ctx->stats.sess_accept);
2463 case SSL_CTRL_SESS_ACCEPT_GOOD:
2464 return tsan_load(&ctx->stats.sess_accept_good);
2465 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2466 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2467 case SSL_CTRL_SESS_HIT:
2468 return tsan_load(&ctx->stats.sess_hit);
2469 case SSL_CTRL_SESS_CB_HIT:
2470 return tsan_load(&ctx->stats.sess_cb_hit);
2471 case SSL_CTRL_SESS_MISSES:
2472 return tsan_load(&ctx->stats.sess_miss);
2473 case SSL_CTRL_SESS_TIMEOUTS:
2474 return tsan_load(&ctx->stats.sess_timeout);
2475 case SSL_CTRL_SESS_CACHE_FULL:
2476 return tsan_load(&ctx->stats.sess_cache_full);
2478 return (ctx->mode |= larg);
2479 case SSL_CTRL_CLEAR_MODE:
2480 return (ctx->mode &= ~larg);
2481 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2482 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2484 ctx->max_send_fragment = larg;
2485 if (ctx->max_send_fragment < ctx->split_send_fragment)
2486 ctx->split_send_fragment = ctx->max_send_fragment;
2488 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2489 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2491 ctx->split_send_fragment = larg;
2493 case SSL_CTRL_SET_MAX_PIPELINES:
2494 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2496 ctx->max_pipelines = larg;
2498 case SSL_CTRL_CERT_FLAGS:
2499 return (ctx->cert->cert_flags |= larg);
2500 case SSL_CTRL_CLEAR_CERT_FLAGS:
2501 return (ctx->cert->cert_flags &= ~larg);
2502 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2503 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2504 && ssl_set_version_bound(ctx->method->version, (int)larg,
2505 &ctx->min_proto_version);
2506 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2507 return ctx->min_proto_version;
2508 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2509 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2510 && ssl_set_version_bound(ctx->method->version, (int)larg,
2511 &ctx->max_proto_version);
2512 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2513 return ctx->max_proto_version;
2515 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2519 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2522 case SSL_CTRL_SET_MSG_CALLBACK:
2523 ctx->msg_callback = (void (*)
2524 (int write_p, int version, int content_type,
2525 const void *buf, size_t len, SSL *ssl,
2530 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2534 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2543 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2544 const SSL_CIPHER *const *bp)
2546 if ((*ap)->id > (*bp)->id)
2548 if ((*ap)->id < (*bp)->id)
2553 /** return a STACK of the ciphers available for the SSL and in order of
2555 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2558 if (s->cipher_list != NULL) {
2559 return s->cipher_list;
2560 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2561 return s->ctx->cipher_list;
2567 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2569 if ((s == NULL) || !s->server)
2571 return s->peer_ciphers;
2574 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2576 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2579 ciphers = SSL_get_ciphers(s);
2582 if (!ssl_set_client_disabled(s))
2584 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2585 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2586 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2588 sk = sk_SSL_CIPHER_new_null();
2591 if (!sk_SSL_CIPHER_push(sk, c)) {
2592 sk_SSL_CIPHER_free(sk);
2600 /** return a STACK of the ciphers available for the SSL and in order of
2602 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2605 if (s->cipher_list_by_id != NULL) {
2606 return s->cipher_list_by_id;
2607 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2608 return s->ctx->cipher_list_by_id;
2614 /** The old interface to get the same thing as SSL_get_ciphers() */
2615 const char *SSL_get_cipher_list(const SSL *s, int n)
2617 const SSL_CIPHER *c;
2618 STACK_OF(SSL_CIPHER) *sk;
2622 sk = SSL_get_ciphers(s);
2623 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2625 c = sk_SSL_CIPHER_value(sk, n);
2631 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2633 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2636 return ctx->cipher_list;
2641 * Distinguish between ciphers controlled by set_ciphersuite() and
2642 * set_cipher_list() when counting.
2644 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2647 const SSL_CIPHER *c;
2651 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2652 c = sk_SSL_CIPHER_value(sk, i);
2653 if (c->min_tls >= TLS1_3_VERSION)
2660 /** specify the ciphers to be used by default by the SSL_CTX */
2661 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2663 STACK_OF(SSL_CIPHER) *sk;
2665 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2666 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2669 * ssl_create_cipher_list may return an empty stack if it was unable to
2670 * find a cipher matching the given rule string (for example if the rule
2671 * string specifies a cipher which has been disabled). This is not an
2672 * error as far as ssl_create_cipher_list is concerned, and hence
2673 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2677 else if (cipher_list_tls12_num(sk) == 0) {
2678 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2684 /** specify the ciphers to be used by the SSL */
2685 int SSL_set_cipher_list(SSL *s, const char *str)
2687 STACK_OF(SSL_CIPHER) *sk;
2689 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2690 &s->cipher_list, &s->cipher_list_by_id, str,
2692 /* see comment in SSL_CTX_set_cipher_list */
2695 else if (cipher_list_tls12_num(sk) == 0) {
2696 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2702 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2705 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2706 const SSL_CIPHER *c;
2710 || s->peer_ciphers == NULL
2715 clntsk = s->peer_ciphers;
2716 srvrsk = SSL_get_ciphers(s);
2717 if (clntsk == NULL || srvrsk == NULL)
2720 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2723 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2726 c = sk_SSL_CIPHER_value(clntsk, i);
2727 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2730 n = strlen(c->name);
2747 * Return the requested servername (SNI) value. Note that the behaviour varies
2749 * - whether this is called by the client or the server,
2750 * - if we are before or during/after the handshake,
2751 * - if a resumption or normal handshake is being attempted/has occurred
2752 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2754 * Note that only the host_name type is defined (RFC 3546).
2756 const char *SSL_get_servername(const SSL *s, const int type)
2759 * If we don't know if we are the client or the server yet then we assume
2762 int server = s->handshake_func == NULL ? 0 : s->server;
2763 if (type != TLSEXT_NAMETYPE_host_name)
2769 * In TLSv1.3 on the server SNI is not associated with the session
2770 * but in TLSv1.2 or below it is.
2772 * Before the handshake:
2775 * During/after the handshake (TLSv1.2 or below resumption occurred):
2776 * - If a servername was accepted by the server in the original
2777 * handshake then it will return that servername, or NULL otherwise.
2779 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2780 * - The function will return the servername requested by the client in
2781 * this handshake or NULL if none was requested.
2783 if (s->hit && !SSL_IS_TLS13(s))
2784 return s->session->ext.hostname;
2789 * Before the handshake:
2790 * - If a servername has been set via a call to
2791 * SSL_set_tlsext_host_name() then it will return that servername
2792 * - If one has not been set, but a TLSv1.2 resumption is being
2793 * attempted and the session from the original handshake had a
2794 * servername accepted by the server then it will return that
2796 * - Otherwise it returns NULL
2798 * During/after the handshake (TLSv1.2 or below resumption occurred):
2799 * - If the session from the original handshake had a servername accepted
2800 * by the server then it will return that servername.
2801 * - Otherwise it returns the servername set via
2802 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2804 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2805 * - It will return the servername set via SSL_set_tlsext_host_name()
2806 * (or NULL if it was not called).
2808 if (SSL_in_before(s)) {
2809 if (s->ext.hostname == NULL
2810 && s->session != NULL
2811 && s->session->ssl_version != TLS1_3_VERSION)
2812 return s->session->ext.hostname;
2814 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2815 return s->session->ext.hostname;
2819 return s->ext.hostname;
2822 int SSL_get_servername_type(const SSL *s)
2824 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2825 return TLSEXT_NAMETYPE_host_name;
2830 * SSL_select_next_proto implements the standard protocol selection. It is
2831 * expected that this function is called from the callback set by
2832 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2833 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2834 * not included in the length. A byte string of length 0 is invalid. No byte
2835 * string may be truncated. The current, but experimental algorithm for
2836 * selecting the protocol is: 1) If the server doesn't support NPN then this
2837 * is indicated to the callback. In this case, the client application has to
2838 * abort the connection or have a default application level protocol. 2) If
2839 * the server supports NPN, but advertises an empty list then the client
2840 * selects the first protocol in its list, but indicates via the API that this
2841 * fallback case was enacted. 3) Otherwise, the client finds the first
2842 * protocol in the server's list that it supports and selects this protocol.
2843 * This is because it's assumed that the server has better information about
2844 * which protocol a client should use. 4) If the client doesn't support any
2845 * of the server's advertised protocols, then this is treated the same as
2846 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2847 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2849 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2850 const unsigned char *server,
2851 unsigned int server_len,
2852 const unsigned char *client, unsigned int client_len)
2855 const unsigned char *result;
2856 int status = OPENSSL_NPN_UNSUPPORTED;
2859 * For each protocol in server preference order, see if we support it.
2861 for (i = 0; i < server_len;) {
2862 for (j = 0; j < client_len;) {
2863 if (server[i] == client[j] &&
2864 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2865 /* We found a match */
2866 result = &server[i];
2867 status = OPENSSL_NPN_NEGOTIATED;
2877 /* There's no overlap between our protocols and the server's list. */
2879 status = OPENSSL_NPN_NO_OVERLAP;
2882 *out = (unsigned char *)result + 1;
2883 *outlen = result[0];
2887 #ifndef OPENSSL_NO_NEXTPROTONEG
2889 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2890 * client's requested protocol for this connection and returns 0. If the
2891 * client didn't request any protocol, then *data is set to NULL. Note that
2892 * the client can request any protocol it chooses. The value returned from
2893 * this function need not be a member of the list of supported protocols
2894 * provided by the callback.
2896 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2903 *len = (unsigned int)s->ext.npn_len;
2908 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2909 * a TLS server needs a list of supported protocols for Next Protocol
2910 * Negotiation. The returned list must be in wire format. The list is
2911 * returned by setting |out| to point to it and |outlen| to its length. This
2912 * memory will not be modified, but one should assume that the SSL* keeps a
2913 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2914 * wishes to advertise. Otherwise, no such extension will be included in the
2917 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2918 SSL_CTX_npn_advertised_cb_func cb,
2921 ctx->ext.npn_advertised_cb = cb;
2922 ctx->ext.npn_advertised_cb_arg = arg;
2926 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2927 * client needs to select a protocol from the server's provided list. |out|
2928 * must be set to point to the selected protocol (which may be within |in|).
2929 * The length of the protocol name must be written into |outlen|. The
2930 * server's advertised protocols are provided in |in| and |inlen|. The
2931 * callback can assume that |in| is syntactically valid. The client must
2932 * select a protocol. It is fatal to the connection if this callback returns
2933 * a value other than SSL_TLSEXT_ERR_OK.
2935 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2936 SSL_CTX_npn_select_cb_func cb,
2939 ctx->ext.npn_select_cb = cb;
2940 ctx->ext.npn_select_cb_arg = arg;
2944 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
2948 if (protos_len < 2 || protos == NULL)
2951 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
2952 if (protos[idx] == 0)
2955 return idx == protos_len;
2958 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2959 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2960 * length-prefixed strings). Returns 0 on success.
2962 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2963 unsigned int protos_len)
2965 unsigned char *alpn;
2967 if (protos_len == 0 || protos == NULL) {
2968 OPENSSL_free(ctx->ext.alpn);
2969 ctx->ext.alpn = NULL;
2970 ctx->ext.alpn_len = 0;
2973 /* Not valid per RFC */
2974 if (!alpn_value_ok(protos, protos_len))
2977 alpn = OPENSSL_memdup(protos, protos_len);
2979 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2982 OPENSSL_free(ctx->ext.alpn);
2983 ctx->ext.alpn = alpn;
2984 ctx->ext.alpn_len = protos_len;
2990 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2991 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2992 * length-prefixed strings). Returns 0 on success.
2994 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2995 unsigned int protos_len)
2997 unsigned char *alpn;
2999 if (protos_len == 0 || protos == NULL) {
3000 OPENSSL_free(ssl->ext.alpn);
3001 ssl->ext.alpn = NULL;
3002 ssl->ext.alpn_len = 0;
3005 /* Not valid per RFC */
3006 if (!alpn_value_ok(protos, protos_len))
3009 alpn = OPENSSL_memdup(protos, protos_len);
3011 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3014 OPENSSL_free(ssl->ext.alpn);
3015 ssl->ext.alpn = alpn;
3016 ssl->ext.alpn_len = protos_len;
3022 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3023 * called during ClientHello processing in order to select an ALPN protocol
3024 * from the client's list of offered protocols.
3026 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3027 SSL_CTX_alpn_select_cb_func cb,
3030 ctx->ext.alpn_select_cb = cb;
3031 ctx->ext.alpn_select_cb_arg = arg;
3035 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3036 * On return it sets |*data| to point to |*len| bytes of protocol name
3037 * (not including the leading length-prefix byte). If the server didn't
3038 * respond with a negotiated protocol then |*len| will be zero.
3040 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3045 *data = ssl->s3->alpn_selected;
3049 *len = (unsigned int)ssl->s3->alpn_selected_len;
3052 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3053 const char *label, size_t llen,
3054 const unsigned char *context, size_t contextlen,
3057 if (s->session == NULL
3058 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3061 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3063 contextlen, use_context);
3066 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3067 const char *label, size_t llen,
3068 const unsigned char *context,
3071 if (s->version != TLS1_3_VERSION)
3074 return tls13_export_keying_material_early(s, out, olen, label, llen,
3075 context, contextlen);
3078 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3080 const unsigned char *session_id = a->session_id;
3082 unsigned char tmp_storage[4];
3084 if (a->session_id_length < sizeof(tmp_storage)) {
3085 memset(tmp_storage, 0, sizeof(tmp_storage));
3086 memcpy(tmp_storage, a->session_id, a->session_id_length);
3087 session_id = tmp_storage;
3091 ((unsigned long)session_id[0]) |
3092 ((unsigned long)session_id[1] << 8L) |
3093 ((unsigned long)session_id[2] << 16L) |
3094 ((unsigned long)session_id[3] << 24L);
3099 * NB: If this function (or indeed the hash function which uses a sort of
3100 * coarser function than this one) is changed, ensure
3101 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3102 * being able to construct an SSL_SESSION that will collide with any existing
3103 * session with a matching session ID.
3105 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3107 if (a->ssl_version != b->ssl_version)
3109 if (a->session_id_length != b->session_id_length)
3111 return memcmp(a->session_id, b->session_id, a->session_id_length);
3115 * These wrapper functions should remain rather than redeclaring
3116 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3117 * variable. The reason is that the functions aren't static, they're exposed
3121 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3123 SSL_CTX *ret = NULL;
3126 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_NULL_SSL_METHOD_PASSED);
3130 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3133 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3134 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3137 ret = OPENSSL_zalloc(sizeof(*ret));
3142 ret->min_proto_version = 0;
3143 ret->max_proto_version = 0;
3144 ret->mode = SSL_MODE_AUTO_RETRY;
3145 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3146 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3147 /* We take the system default. */
3148 ret->session_timeout = meth->get_timeout();
3149 ret->references = 1;
3150 ret->lock = CRYPTO_THREAD_lock_new();
3151 if (ret->lock == NULL) {
3152 SSLerr(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3156 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3157 ret->verify_mode = SSL_VERIFY_NONE;
3158 if ((ret->cert = ssl_cert_new()) == NULL)
3161 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3162 if (ret->sessions == NULL)
3164 ret->cert_store = X509_STORE_new();
3165 if (ret->cert_store == NULL)
3167 #ifndef OPENSSL_NO_CT
3168 ret->ctlog_store = CTLOG_STORE_new();
3169 if (ret->ctlog_store == NULL)
3173 if (!SSL_CTX_set_ciphersuites(ret, TLS_DEFAULT_CIPHERSUITES))
3176 if (!ssl_create_cipher_list(ret->method,
3177 ret->tls13_ciphersuites,
3178 &ret->cipher_list, &ret->cipher_list_by_id,
3179 SSL_DEFAULT_CIPHER_LIST, ret->cert)
3180 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3181 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3185 ret->param = X509_VERIFY_PARAM_new();
3186 if (ret->param == NULL)
3189 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3190 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3193 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3194 SSLerr(SSL_F_SSL_CTX_NEW, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
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(ret->ext.tick_key_name,
3219 sizeof(ret->ext.tick_key_name)) <= 0)
3220 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
3221 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3222 || (RAND_priv_bytes(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(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(SSL_F_SSL_CTX_NEW, ERR_R_MALLOC_FAILURE);
3310 int SSL_CTX_up_ref(SSL_CTX *ctx)
3314 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3317 REF_PRINT_COUNT("SSL_CTX", ctx);
3318 REF_ASSERT_ISNT(i < 2);
3319 return ((i > 1) ? 1 : 0);
3322 void SSL_CTX_free(SSL_CTX *a)
3329 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3330 REF_PRINT_COUNT("SSL_CTX", a);
3333 REF_ASSERT_ISNT(i < 0);
3335 X509_VERIFY_PARAM_free(a->param);
3336 dane_ctx_final(&a->dane);
3339 * Free internal session cache. However: the remove_cb() may reference
3340 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3341 * after the sessions were flushed.
3342 * As the ex_data handling routines might also touch the session cache,
3343 * the most secure solution seems to be: empty (flush) the cache, then
3344 * free ex_data, then finally free the cache.
3345 * (See ticket [openssl.org #212].)
3347 if (a->sessions != NULL)
3348 SSL_CTX_flush_sessions(a, 0);
3350 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3351 lh_SSL_SESSION_free(a->sessions);
3352 X509_STORE_free(a->cert_store);
3353 #ifndef OPENSSL_NO_CT
3354 CTLOG_STORE_free(a->ctlog_store);
3356 sk_SSL_CIPHER_free(a->cipher_list);
3357 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3358 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3359 ssl_cert_free(a->cert);
3360 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3361 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3362 sk_X509_pop_free(a->extra_certs, X509_free);
3363 a->comp_methods = NULL;
3364 #ifndef OPENSSL_NO_SRTP
3365 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3367 #ifndef OPENSSL_NO_SRP
3368 SSL_CTX_SRP_CTX_free(a);
3370 #ifndef OPENSSL_NO_ENGINE
3371 ENGINE_finish(a->client_cert_engine);
3374 #ifndef OPENSSL_NO_EC
3375 OPENSSL_free(a->ext.ecpointformats);
3376 OPENSSL_free(a->ext.supportedgroups);
3378 OPENSSL_free(a->ext.alpn);
3379 OPENSSL_secure_free(a->ext.secure);
3381 CRYPTO_THREAD_lock_free(a->lock);
3386 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3388 ctx->default_passwd_callback = cb;
3391 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3393 ctx->default_passwd_callback_userdata = u;
3396 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3398 return ctx->default_passwd_callback;
3401 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3403 return ctx->default_passwd_callback_userdata;
3406 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3408 s->default_passwd_callback = cb;
3411 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3413 s->default_passwd_callback_userdata = u;
3416 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3418 return s->default_passwd_callback;
3421 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3423 return s->default_passwd_callback_userdata;
3426 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3427 int (*cb) (X509_STORE_CTX *, void *),
3430 ctx->app_verify_callback = cb;
3431 ctx->app_verify_arg = arg;
3434 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3435 int (*cb) (int, X509_STORE_CTX *))
3437 ctx->verify_mode = mode;
3438 ctx->default_verify_callback = cb;
3441 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3443 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3446 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3448 ssl_cert_set_cert_cb(c->cert, cb, arg);
3451 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3453 ssl_cert_set_cert_cb(s->cert, cb, arg);
3456 void ssl_set_masks(SSL *s)
3459 uint32_t *pvalid = s->s3->tmp.valid_flags;
3460 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3461 unsigned long mask_k, mask_a;
3462 #ifndef OPENSSL_NO_EC
3463 int have_ecc_cert, ecdsa_ok;
3468 #ifndef OPENSSL_NO_DH
3469 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3474 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3475 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3476 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3477 #ifndef OPENSSL_NO_EC
3478 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3484 fprintf(stderr, "dht=%d re=%d rs=%d ds=%d\n",
3485 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3488 #ifndef OPENSSL_NO_GOST
3489 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3490 mask_k |= SSL_kGOST;
3491 mask_a |= SSL_aGOST12;
3493 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3494 mask_k |= SSL_kGOST;
3495 mask_a |= SSL_aGOST12;
3497 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3498 mask_k |= SSL_kGOST;
3499 mask_a |= SSL_aGOST01;
3510 * If we only have an RSA-PSS certificate allow RSA authentication
3511 * if TLS 1.2 and peer supports it.
3514 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3515 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3516 && TLS1_get_version(s) == TLS1_2_VERSION))
3523 mask_a |= SSL_aNULL;
3526 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3527 * depending on the key usage extension.
3529 #ifndef OPENSSL_NO_EC
3530 if (have_ecc_cert) {
3532 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3533 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3534 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3537 mask_a |= SSL_aECDSA;
3539 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3540 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3541 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3542 && TLS1_get_version(s) == TLS1_2_VERSION)
3543 mask_a |= SSL_aECDSA;
3545 /* Allow Ed448 for TLS 1.2 if peer supports it */
3546 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3547 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3548 && TLS1_get_version(s) == TLS1_2_VERSION)
3549 mask_a |= SSL_aECDSA;
3552 #ifndef OPENSSL_NO_EC
3553 mask_k |= SSL_kECDHE;
3556 #ifndef OPENSSL_NO_PSK
3559 if (mask_k & SSL_kRSA)
3560 mask_k |= SSL_kRSAPSK;
3561 if (mask_k & SSL_kDHE)
3562 mask_k |= SSL_kDHEPSK;
3563 if (mask_k & SSL_kECDHE)
3564 mask_k |= SSL_kECDHEPSK;
3567 s->s3->tmp.mask_k = mask_k;
3568 s->s3->tmp.mask_a = mask_a;
3571 #ifndef OPENSSL_NO_EC
3573 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3575 if (s->s3->tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3576 /* key usage, if present, must allow signing */
3577 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3578 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3579 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3583 return 1; /* all checks are ok */
3588 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3589 size_t *serverinfo_length)
3591 CERT_PKEY *cpk = s->s3->tmp.cert;
3592 *serverinfo_length = 0;
3594 if (cpk == NULL || cpk->serverinfo == NULL)
3597 *serverinfo = cpk->serverinfo;
3598 *serverinfo_length = cpk->serverinfo_length;
3602 void ssl_update_cache(SSL *s, int mode)
3607 * If the session_id_length is 0, we are not supposed to cache it, and it
3608 * would be rather hard to do anyway :-)
3610 if (s->session->session_id_length == 0)
3614 * If sid_ctx_length is 0 there is no specific application context
3615 * associated with this session, so when we try to resume it and
3616 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3617 * indication that this is actually a session for the proper application
3618 * context, and the *handshake* will fail, not just the resumption attempt.
3619 * Do not cache (on the server) these sessions that are not resumable
3620 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3622 if (s->server && s->session->sid_ctx_length == 0
3623 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3626 i = s->session_ctx->session_cache_mode;
3628 && (!s->hit || SSL_IS_TLS13(s))) {
3630 * Add the session to the internal cache. In server side TLSv1.3 we
3631 * normally don't do this because by default it's a full stateless ticket
3632 * with only a dummy session id so there is no reason to cache it,
3634 * - we are doing early_data, in which case we cache so that we can
3636 * - the application has set a remove_session_cb so needs to know about
3637 * session timeout events
3638 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3640 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3641 && (!SSL_IS_TLS13(s)
3643 || (s->max_early_data > 0
3644 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3645 || s->session_ctx->remove_session_cb != NULL
3646 || (s->options & SSL_OP_NO_TICKET) != 0))
3647 SSL_CTX_add_session(s->session_ctx, s->session);
3650 * Add the session to the external cache. We do this even in server side
3651 * TLSv1.3 without early data because some applications just want to
3652 * know about the creation of a session and aren't doing a full cache.
3654 if (s->session_ctx->new_session_cb != NULL) {
3655 SSL_SESSION_up_ref(s->session);
3656 if (!s->session_ctx->new_session_cb(s, s->session))
3657 SSL_SESSION_free(s->session);
3661 /* auto flush every 255 connections */
3662 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3663 TSAN_QUALIFIER int *stat;
3664 if (mode & SSL_SESS_CACHE_CLIENT)
3665 stat = &s->session_ctx->stats.sess_connect_good;
3667 stat = &s->session_ctx->stats.sess_accept_good;
3668 if ((tsan_load(stat) & 0xff) == 0xff)
3669 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3673 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3678 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3683 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3687 if (s->method != meth) {
3688 const SSL_METHOD *sm = s->method;
3689 int (*hf) (SSL *) = s->handshake_func;
3691 if (sm->version == meth->version)
3696 ret = s->method->ssl_new(s);
3699 if (hf == sm->ssl_connect)
3700 s->handshake_func = meth->ssl_connect;
3701 else if (hf == sm->ssl_accept)
3702 s->handshake_func = meth->ssl_accept;
3707 int SSL_get_error(const SSL *s, int i)
3714 return SSL_ERROR_NONE;
3717 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3718 * where we do encode the error
3720 if ((l = ERR_peek_error()) != 0) {
3721 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3722 return SSL_ERROR_SYSCALL;
3724 return SSL_ERROR_SSL;
3727 if (SSL_want_read(s)) {
3728 bio = SSL_get_rbio(s);
3729 if (BIO_should_read(bio))
3730 return SSL_ERROR_WANT_READ;
3731 else if (BIO_should_write(bio))
3733 * This one doesn't make too much sense ... We never try to write
3734 * to the rbio, and an application program where rbio and wbio
3735 * are separate couldn't even know what it should wait for.
3736 * However if we ever set s->rwstate incorrectly (so that we have
3737 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3738 * wbio *are* the same, this test works around that bug; so it
3739 * might be safer to keep it.
3741 return SSL_ERROR_WANT_WRITE;
3742 else if (BIO_should_io_special(bio)) {
3743 reason = BIO_get_retry_reason(bio);
3744 if (reason == BIO_RR_CONNECT)
3745 return SSL_ERROR_WANT_CONNECT;
3746 else if (reason == BIO_RR_ACCEPT)
3747 return SSL_ERROR_WANT_ACCEPT;
3749 return SSL_ERROR_SYSCALL; /* unknown */
3753 if (SSL_want_write(s)) {
3754 /* Access wbio directly - in order to use the buffered bio if present */
3756 if (BIO_should_write(bio))
3757 return SSL_ERROR_WANT_WRITE;
3758 else if (BIO_should_read(bio))
3760 * See above (SSL_want_read(s) with BIO_should_write(bio))
3762 return SSL_ERROR_WANT_READ;
3763 else if (BIO_should_io_special(bio)) {
3764 reason = BIO_get_retry_reason(bio);
3765 if (reason == BIO_RR_CONNECT)
3766 return SSL_ERROR_WANT_CONNECT;
3767 else if (reason == BIO_RR_ACCEPT)
3768 return SSL_ERROR_WANT_ACCEPT;
3770 return SSL_ERROR_SYSCALL;
3773 if (SSL_want_x509_lookup(s))
3774 return SSL_ERROR_WANT_X509_LOOKUP;
3775 if (SSL_want_async(s))
3776 return SSL_ERROR_WANT_ASYNC;
3777 if (SSL_want_async_job(s))
3778 return SSL_ERROR_WANT_ASYNC_JOB;
3779 if (SSL_want_client_hello_cb(s))
3780 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3782 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3783 (s->s3->warn_alert == SSL_AD_CLOSE_NOTIFY))
3784 return SSL_ERROR_ZERO_RETURN;
3786 return SSL_ERROR_SYSCALL;
3789 static int ssl_do_handshake_intern(void *vargs)
3791 struct ssl_async_args *args;
3794 args = (struct ssl_async_args *)vargs;
3797 return s->handshake_func(s);
3800 int SSL_do_handshake(SSL *s)
3804 if (s->handshake_func == NULL) {
3805 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3809 ossl_statem_check_finish_init(s, -1);
3811 s->method->ssl_renegotiate_check(s, 0);
3813 if (SSL_in_init(s) || SSL_in_before(s)) {
3814 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3815 struct ssl_async_args args;
3817 memset(&args, 0, sizeof(args));
3820 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3822 ret = s->handshake_func(s);
3828 void SSL_set_accept_state(SSL *s)
3832 ossl_statem_clear(s);
3833 s->handshake_func = s->method->ssl_accept;
3837 void SSL_set_connect_state(SSL *s)
3841 ossl_statem_clear(s);
3842 s->handshake_func = s->method->ssl_connect;
3846 int ssl_undefined_function(SSL *s)
3848 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3852 int ssl_undefined_void_function(void)
3854 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3855 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3859 int ssl_undefined_const_function(const SSL *s)
3864 const SSL_METHOD *ssl_bad_method(int ver)
3866 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3870 const char *ssl_protocol_to_string(int version)
3874 case TLS1_3_VERSION:
3877 case TLS1_2_VERSION:
3880 case TLS1_1_VERSION:
3895 case DTLS1_2_VERSION:
3903 const char *SSL_get_version(const SSL *s)
3905 return ssl_protocol_to_string(s->version);
3908 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3910 STACK_OF(X509_NAME) *sk;
3919 if ((sk = sk_X509_NAME_new_null()) == NULL)
3921 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3922 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3924 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3927 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3929 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3938 SSL *SSL_dup(SSL *s)
3943 /* If we're not quiescent, just up_ref! */
3944 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3945 CRYPTO_UP_REF(&s->references, &i, s->lock);
3950 * Otherwise, copy configuration state, and session if set.
3952 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3955 if (s->session != NULL) {
3957 * Arranges to share the same session via up_ref. This "copies"
3958 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3960 if (!SSL_copy_session_id(ret, s))
3964 * No session has been established yet, so we have to expect that
3965 * s->cert or ret->cert will be changed later -- they should not both
3966 * point to the same object, and thus we can't use
3967 * SSL_copy_session_id.
3969 if (!SSL_set_ssl_method(ret, s->method))
3972 if (s->cert != NULL) {
3973 ssl_cert_free(ret->cert);
3974 ret->cert = ssl_cert_dup(s->cert);
3975 if (ret->cert == NULL)
3979 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3980 (int)s->sid_ctx_length))
3984 if (!ssl_dane_dup(ret, s))
3986 ret->version = s->version;
3987 ret->options = s->options;
3988 ret->min_proto_version = s->min_proto_version;
3989 ret->max_proto_version = s->max_proto_version;
3990 ret->mode = s->mode;
3991 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3992 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3993 ret->msg_callback = s->msg_callback;
3994 ret->msg_callback_arg = s->msg_callback_arg;
3995 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3996 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3997 ret->generate_session_id = s->generate_session_id;
3999 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4001 /* copy app data, a little dangerous perhaps */
4002 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4005 ret->server = s->server;
4006 if (s->handshake_func) {
4008 SSL_set_accept_state(ret);
4010 SSL_set_connect_state(ret);
4012 ret->shutdown = s->shutdown;
4015 ret->default_passwd_callback = s->default_passwd_callback;
4016 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4018 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4020 /* dup the cipher_list and cipher_list_by_id stacks */
4021 if (s->cipher_list != NULL) {
4022 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4025 if (s->cipher_list_by_id != NULL)
4026 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4030 /* Dup the client_CA list */
4031 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4032 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4042 void ssl_clear_cipher_ctx(SSL *s)
4044 if (s->enc_read_ctx != NULL) {
4045 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4046 s->enc_read_ctx = NULL;
4048 if (s->enc_write_ctx != NULL) {
4049 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4050 s->enc_write_ctx = NULL;
4052 #ifndef OPENSSL_NO_COMP
4053 COMP_CTX_free(s->expand);
4055 COMP_CTX_free(s->compress);
4060 X509 *SSL_get_certificate(const SSL *s)
4062 if (s->cert != NULL)
4063 return s->cert->key->x509;
4068 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4070 if (s->cert != NULL)
4071 return s->cert->key->privatekey;
4076 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4078 if (ctx->cert != NULL)
4079 return ctx->cert->key->x509;
4084 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4086 if (ctx->cert != NULL)
4087 return ctx->cert->key->privatekey;
4092 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4094 if ((s->session != NULL) && (s->session->cipher != NULL))
4095 return s->session->cipher;
4099 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4101 return s->s3->tmp.new_cipher;
4104 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4106 #ifndef OPENSSL_NO_COMP
4107 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4113 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4115 #ifndef OPENSSL_NO_COMP
4116 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4122 int ssl_init_wbio_buffer(SSL *s)
4126 if (s->bbio != NULL) {
4127 /* Already buffered. */
4131 bbio = BIO_new(BIO_f_buffer());
4132 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4134 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4138 s->wbio = BIO_push(bbio, s->wbio);
4143 int ssl_free_wbio_buffer(SSL *s)
4145 /* callers ensure s is never null */
4146 if (s->bbio == NULL)
4149 s->wbio = BIO_pop(s->wbio);
4156 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4158 ctx->quiet_shutdown = mode;
4161 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4163 return ctx->quiet_shutdown;
4166 void SSL_set_quiet_shutdown(SSL *s, int mode)
4168 s->quiet_shutdown = mode;
4171 int SSL_get_quiet_shutdown(const SSL *s)
4173 return s->quiet_shutdown;
4176 void SSL_set_shutdown(SSL *s, int mode)
4181 int SSL_get_shutdown(const SSL *s)
4186 int SSL_version(const SSL *s)
4191 int SSL_client_version(const SSL *s)
4193 return s->client_version;
4196 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4201 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4204 if (ssl->ctx == ctx)
4207 ctx = ssl->session_ctx;
4208 new_cert = ssl_cert_dup(ctx->cert);
4209 if (new_cert == NULL) {
4213 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4214 ssl_cert_free(new_cert);
4218 ssl_cert_free(ssl->cert);
4219 ssl->cert = new_cert;
4222 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4223 * so setter APIs must prevent invalid lengths from entering the system.
4225 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4229 * If the session ID context matches that of the parent SSL_CTX,
4230 * inherit it from the new SSL_CTX as well. If however the context does
4231 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4232 * leave it unchanged.
4234 if ((ssl->ctx != NULL) &&
4235 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4236 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4237 ssl->sid_ctx_length = ctx->sid_ctx_length;
4238 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4241 SSL_CTX_up_ref(ctx);
4242 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4248 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4250 return X509_STORE_set_default_paths(ctx->cert_store);
4253 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4255 X509_LOOKUP *lookup;
4257 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4260 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4262 /* Clear any errors if the default directory does not exist */
4268 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4270 X509_LOOKUP *lookup;
4272 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4276 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4278 /* Clear any errors if the default file does not exist */
4284 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4287 return X509_STORE_load_locations(ctx->cert_store, CAfile, CApath);
4290 void SSL_set_info_callback(SSL *ssl,
4291 void (*cb) (const SSL *ssl, int type, int val))
4293 ssl->info_callback = cb;
4297 * One compiler (Diab DCC) doesn't like argument names in returned function
4300 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4303 return ssl->info_callback;
4306 void SSL_set_verify_result(SSL *ssl, long arg)
4308 ssl->verify_result = arg;
4311 long SSL_get_verify_result(const SSL *ssl)
4313 return ssl->verify_result;
4316 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4319 return sizeof(ssl->s3->client_random);
4320 if (outlen > sizeof(ssl->s3->client_random))
4321 outlen = sizeof(ssl->s3->client_random);
4322 memcpy(out, ssl->s3->client_random, outlen);
4326 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4329 return sizeof(ssl->s3->server_random);
4330 if (outlen > sizeof(ssl->s3->server_random))
4331 outlen = sizeof(ssl->s3->server_random);
4332 memcpy(out, ssl->s3->server_random, outlen);
4336 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4337 unsigned char *out, size_t outlen)
4340 return session->master_key_length;
4341 if (outlen > session->master_key_length)
4342 outlen = session->master_key_length;
4343 memcpy(out, session->master_key, outlen);
4347 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4350 if (len > sizeof(sess->master_key))
4353 memcpy(sess->master_key, in, len);
4354 sess->master_key_length = len;
4359 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4361 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4364 void *SSL_get_ex_data(const SSL *s, int idx)
4366 return CRYPTO_get_ex_data(&s->ex_data, idx);
4369 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4371 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4374 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4376 return CRYPTO_get_ex_data(&s->ex_data, idx);
4379 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4381 return ctx->cert_store;
4384 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4386 X509_STORE_free(ctx->cert_store);
4387 ctx->cert_store = store;
4390 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4393 X509_STORE_up_ref(store);
4394 SSL_CTX_set_cert_store(ctx, store);
4397 int SSL_want(const SSL *s)
4403 * \brief Set the callback for generating temporary DH keys.
4404 * \param ctx the SSL context.
4405 * \param dh the callback
4408 #ifndef OPENSSL_NO_DH
4409 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4410 DH *(*dh) (SSL *ssl, int is_export,
4413 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4416 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4419 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4423 #ifndef OPENSSL_NO_PSK
4424 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4426 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4427 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4430 OPENSSL_free(ctx->cert->psk_identity_hint);
4431 if (identity_hint != NULL) {
4432 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4433 if (ctx->cert->psk_identity_hint == NULL)
4436 ctx->cert->psk_identity_hint = NULL;
4440 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4445 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4446 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4449 OPENSSL_free(s->cert->psk_identity_hint);
4450 if (identity_hint != NULL) {
4451 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4452 if (s->cert->psk_identity_hint == NULL)
4455 s->cert->psk_identity_hint = NULL;
4459 const char *SSL_get_psk_identity_hint(const SSL *s)
4461 if (s == NULL || s->session == NULL)
4463 return s->session->psk_identity_hint;
4466 const char *SSL_get_psk_identity(const SSL *s)
4468 if (s == NULL || s->session == NULL)
4470 return s->session->psk_identity;
4473 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4475 s->psk_client_callback = cb;
4478 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4480 ctx->psk_client_callback = cb;
4483 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4485 s->psk_server_callback = cb;
4488 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4490 ctx->psk_server_callback = cb;
4494 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4496 s->psk_find_session_cb = cb;
4499 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4500 SSL_psk_find_session_cb_func cb)
4502 ctx->psk_find_session_cb = cb;
4505 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4507 s->psk_use_session_cb = cb;
4510 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4511 SSL_psk_use_session_cb_func cb)
4513 ctx->psk_use_session_cb = cb;
4516 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4517 void (*cb) (int write_p, int version,
4518 int content_type, const void *buf,
4519 size_t len, SSL *ssl, void *arg))
4521 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4524 void SSL_set_msg_callback(SSL *ssl,
4525 void (*cb) (int write_p, int version,
4526 int content_type, const void *buf,
4527 size_t len, SSL *ssl, void *arg))
4529 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4532 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4533 int (*cb) (SSL *ssl,
4537 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4538 (void (*)(void))cb);
4541 void SSL_set_not_resumable_session_callback(SSL *ssl,
4542 int (*cb) (SSL *ssl,
4543 int is_forward_secure))
4545 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4546 (void (*)(void))cb);
4549 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4550 size_t (*cb) (SSL *ssl, int type,
4551 size_t len, void *arg))
4553 ctx->record_padding_cb = cb;
4556 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4558 ctx->record_padding_arg = arg;
4561 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4563 return ctx->record_padding_arg;
4566 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4568 /* block size of 0 or 1 is basically no padding */
4569 if (block_size == 1)
4570 ctx->block_padding = 0;
4571 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4572 ctx->block_padding = block_size;
4578 int SSL_set_record_padding_callback(SSL *ssl,
4579 size_t (*cb) (SSL *ssl, int type,
4580 size_t len, void *arg))
4584 b = SSL_get_wbio(ssl);
4585 if (b == NULL || !BIO_get_ktls_send(b)) {
4586 ssl->record_padding_cb = cb;
4592 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4594 ssl->record_padding_arg = arg;
4597 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4599 return ssl->record_padding_arg;
4602 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4604 /* block size of 0 or 1 is basically no padding */
4605 if (block_size == 1)
4606 ssl->block_padding = 0;
4607 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4608 ssl->block_padding = block_size;
4614 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4616 s->num_tickets = num_tickets;
4621 size_t SSL_get_num_tickets(const SSL *s)
4623 return s->num_tickets;
4626 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4628 ctx->num_tickets = num_tickets;
4633 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4635 return ctx->num_tickets;
4639 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4640 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4641 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4642 * Returns the newly allocated ctx;
4645 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4647 ssl_clear_hash_ctx(hash);
4648 *hash = EVP_MD_CTX_new();
4649 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4650 EVP_MD_CTX_free(*hash);
4657 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4660 EVP_MD_CTX_free(*hash);
4664 /* Retrieve handshake hashes */
4665 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4668 EVP_MD_CTX *ctx = NULL;
4669 EVP_MD_CTX *hdgst = s->s3->handshake_dgst;
4670 int hashleni = EVP_MD_CTX_size(hdgst);
4673 if (hashleni < 0 || (size_t)hashleni > outlen) {
4674 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4675 ERR_R_INTERNAL_ERROR);
4679 ctx = EVP_MD_CTX_new();
4681 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4682 ERR_R_INTERNAL_ERROR);
4686 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4687 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4688 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4689 ERR_R_INTERNAL_ERROR);
4693 *hashlen = hashleni;
4697 EVP_MD_CTX_free(ctx);
4701 int SSL_session_reused(const SSL *s)
4706 int SSL_is_server(const SSL *s)
4711 #if OPENSSL_API_COMPAT < 0x10100000L
4712 void SSL_set_debug(SSL *s, int debug)
4714 /* Old function was do-nothing anyway... */
4720 void SSL_set_security_level(SSL *s, int level)
4722 s->cert->sec_level = level;
4725 int SSL_get_security_level(const SSL *s)
4727 return s->cert->sec_level;
4730 void SSL_set_security_callback(SSL *s,
4731 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4732 int op, int bits, int nid,
4733 void *other, void *ex))
4735 s->cert->sec_cb = cb;
4738 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4739 const SSL_CTX *ctx, int op,
4740 int bits, int nid, void *other,
4742 return s->cert->sec_cb;
4745 void SSL_set0_security_ex_data(SSL *s, void *ex)
4747 s->cert->sec_ex = ex;
4750 void *SSL_get0_security_ex_data(const SSL *s)
4752 return s->cert->sec_ex;
4755 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4757 ctx->cert->sec_level = level;
4760 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4762 return ctx->cert->sec_level;
4765 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4766 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4767 int op, int bits, int nid,
4768 void *other, void *ex))
4770 ctx->cert->sec_cb = cb;
4773 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4779 return ctx->cert->sec_cb;
4782 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4784 ctx->cert->sec_ex = ex;
4787 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4789 return ctx->cert->sec_ex;
4793 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4794 * can return unsigned long, instead of the generic long return value from the
4795 * control interface.
4797 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4799 return ctx->options;
4802 unsigned long SSL_get_options(const SSL *s)
4807 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4809 return ctx->options |= op;
4812 unsigned long SSL_set_options(SSL *s, unsigned long op)
4814 return s->options |= op;
4817 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4819 return ctx->options &= ~op;
4822 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4824 return s->options &= ~op;
4827 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4829 return s->verified_chain;
4832 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4834 #ifndef OPENSSL_NO_CT
4837 * Moves SCTs from the |src| stack to the |dst| stack.
4838 * The source of each SCT will be set to |origin|.
4839 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4841 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4843 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4844 sct_source_t origin)
4850 *dst = sk_SCT_new_null();
4852 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4857 while ((sct = sk_SCT_pop(src)) != NULL) {
4858 if (SCT_set_source(sct, origin) != 1)
4861 if (sk_SCT_push(*dst, sct) <= 0)
4869 sk_SCT_push(src, sct); /* Put the SCT back */
4874 * Look for data collected during ServerHello and parse if found.
4875 * Returns the number of SCTs extracted.
4877 static int ct_extract_tls_extension_scts(SSL *s)
4879 int scts_extracted = 0;
4881 if (s->ext.scts != NULL) {
4882 const unsigned char *p = s->ext.scts;
4883 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4885 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4887 SCT_LIST_free(scts);
4890 return scts_extracted;
4894 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4895 * contains an SCT X509 extension. They will be stored in |s->scts|.
4897 * - The number of SCTs extracted, assuming an OCSP response exists.
4898 * - 0 if no OCSP response exists or it contains no SCTs.
4899 * - A negative integer if an error occurs.
4901 static int ct_extract_ocsp_response_scts(SSL *s)
4903 # ifndef OPENSSL_NO_OCSP
4904 int scts_extracted = 0;
4905 const unsigned char *p;
4906 OCSP_BASICRESP *br = NULL;
4907 OCSP_RESPONSE *rsp = NULL;
4908 STACK_OF(SCT) *scts = NULL;
4911 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4914 p = s->ext.ocsp.resp;
4915 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4919 br = OCSP_response_get1_basic(rsp);
4923 for (i = 0; i < OCSP_resp_count(br); ++i) {
4924 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4930 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4932 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4933 if (scts_extracted < 0)
4937 SCT_LIST_free(scts);
4938 OCSP_BASICRESP_free(br);
4939 OCSP_RESPONSE_free(rsp);
4940 return scts_extracted;
4942 /* Behave as if no OCSP response exists */
4948 * Attempts to extract SCTs from the peer certificate.
4949 * Return the number of SCTs extracted, or a negative integer if an error
4952 static int ct_extract_x509v3_extension_scts(SSL *s)
4954 int scts_extracted = 0;
4955 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4958 STACK_OF(SCT) *scts =
4959 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4962 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4964 SCT_LIST_free(scts);
4967 return scts_extracted;
4971 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4972 * response (if it exists) and X509v3 extensions in the certificate.
4973 * Returns NULL if an error occurs.
4975 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4977 if (!s->scts_parsed) {
4978 if (ct_extract_tls_extension_scts(s) < 0 ||
4979 ct_extract_ocsp_response_scts(s) < 0 ||
4980 ct_extract_x509v3_extension_scts(s) < 0)
4990 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4991 const STACK_OF(SCT) *scts, void *unused_arg)
4996 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4997 const STACK_OF(SCT) *scts, void *unused_arg)
4999 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5002 for (i = 0; i < count; ++i) {
5003 SCT *sct = sk_SCT_value(scts, i);
5004 int status = SCT_get_validation_status(sct);
5006 if (status == SCT_VALIDATION_STATUS_VALID)
5009 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5013 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5017 * Since code exists that uses the custom extension handler for CT, look
5018 * for this and throw an error if they have already registered to use CT.
5020 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5021 TLSEXT_TYPE_signed_certificate_timestamp))
5023 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5024 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5028 if (callback != NULL) {
5030 * If we are validating CT, then we MUST accept SCTs served via OCSP
5032 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5036 s->ct_validation_callback = callback;
5037 s->ct_validation_callback_arg = arg;
5042 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5043 ssl_ct_validation_cb callback, void *arg)
5046 * Since code exists that uses the custom extension handler for CT, look for
5047 * this and throw an error if they have already registered to use CT.
5049 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5050 TLSEXT_TYPE_signed_certificate_timestamp))
5052 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5053 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5057 ctx->ct_validation_callback = callback;
5058 ctx->ct_validation_callback_arg = arg;
5062 int SSL_ct_is_enabled(const SSL *s)
5064 return s->ct_validation_callback != NULL;
5067 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5069 return ctx->ct_validation_callback != NULL;
5072 int ssl_validate_ct(SSL *s)
5075 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5077 SSL_DANE *dane = &s->dane;
5078 CT_POLICY_EVAL_CTX *ctx = NULL;
5079 const STACK_OF(SCT) *scts;
5082 * If no callback is set, the peer is anonymous, or its chain is invalid,
5083 * skip SCT validation - just return success. Applications that continue
5084 * handshakes without certificates, with unverified chains, or pinned leaf
5085 * certificates are outside the scope of the WebPKI and CT.
5087 * The above exclusions notwithstanding the vast majority of peers will
5088 * have rather ordinary certificate chains validated by typical
5089 * applications that perform certificate verification and therefore will
5090 * process SCTs when enabled.
5092 if (s->ct_validation_callback == NULL || cert == NULL ||
5093 s->verify_result != X509_V_OK ||
5094 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5098 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5099 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5101 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5102 switch (dane->mtlsa->usage) {
5103 case DANETLS_USAGE_DANE_TA:
5104 case DANETLS_USAGE_DANE_EE:
5109 ctx = CT_POLICY_EVAL_CTX_new();
5111 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5112 ERR_R_MALLOC_FAILURE);
5116 issuer = sk_X509_value(s->verified_chain, 1);
5117 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5118 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5119 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5120 CT_POLICY_EVAL_CTX_set_time(
5121 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5123 scts = SSL_get0_peer_scts(s);
5126 * This function returns success (> 0) only when all the SCTs are valid, 0
5127 * when some are invalid, and < 0 on various internal errors (out of
5128 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5129 * reason to abort the handshake, that decision is up to the callback.
5130 * Therefore, we error out only in the unexpected case that the return
5131 * value is negative.
5133 * XXX: One might well argue that the return value of this function is an
5134 * unfortunate design choice. Its job is only to determine the validation
5135 * status of each of the provided SCTs. So long as it correctly separates
5136 * the wheat from the chaff it should return success. Failure in this case
5137 * ought to correspond to an inability to carry out its duties.
5139 if (SCT_LIST_validate(scts, ctx) < 0) {
5140 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5141 SSL_R_SCT_VERIFICATION_FAILED);
5145 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5147 ret = 0; /* This function returns 0 on failure */
5149 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5150 SSL_R_CALLBACK_FAILED);
5153 CT_POLICY_EVAL_CTX_free(ctx);
5155 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5156 * failure return code here. Also the application may wish the complete
5157 * the handshake, and then disconnect cleanly at a higher layer, after
5158 * checking the verification status of the completed connection.
5160 * We therefore force a certificate verification failure which will be
5161 * visible via SSL_get_verify_result() and cached as part of any resumed
5164 * Note: the permissive callback is for information gathering only, always
5165 * returns success, and does not affect verification status. Only the
5166 * strict callback or a custom application-specified callback can trigger
5167 * connection failure or record a verification error.
5170 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5174 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5176 switch (validation_mode) {
5178 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5180 case SSL_CT_VALIDATION_PERMISSIVE:
5181 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5182 case SSL_CT_VALIDATION_STRICT:
5183 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5187 int SSL_enable_ct(SSL *s, int validation_mode)
5189 switch (validation_mode) {
5191 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5193 case SSL_CT_VALIDATION_PERMISSIVE:
5194 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5195 case SSL_CT_VALIDATION_STRICT:
5196 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5200 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5202 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5205 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5207 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5210 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5212 CTLOG_STORE_free(ctx->ctlog_store);
5213 ctx->ctlog_store = logs;
5216 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5218 return ctx->ctlog_store;
5221 #endif /* OPENSSL_NO_CT */
5223 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5226 c->client_hello_cb = cb;
5227 c->client_hello_cb_arg = arg;
5230 int SSL_client_hello_isv2(SSL *s)
5232 if (s->clienthello == NULL)
5234 return s->clienthello->isv2;
5237 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5239 if (s->clienthello == NULL)
5241 return s->clienthello->legacy_version;
5244 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5246 if (s->clienthello == NULL)
5249 *out = s->clienthello->random;
5250 return SSL3_RANDOM_SIZE;
5253 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5255 if (s->clienthello == NULL)
5258 *out = s->clienthello->session_id;
5259 return s->clienthello->session_id_len;
5262 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5264 if (s->clienthello == NULL)
5267 *out = PACKET_data(&s->clienthello->ciphersuites);
5268 return PACKET_remaining(&s->clienthello->ciphersuites);
5271 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5273 if (s->clienthello == NULL)
5276 *out = s->clienthello->compressions;
5277 return s->clienthello->compressions_len;
5280 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5286 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5288 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5289 ext = s->clienthello->pre_proc_exts + i;
5298 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5299 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5300 ERR_R_MALLOC_FAILURE);
5303 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5304 ext = s->clienthello->pre_proc_exts + i;
5306 if (ext->received_order >= num)
5308 present[ext->received_order] = ext->type;
5315 OPENSSL_free(present);
5319 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5325 if (s->clienthello == NULL)
5327 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5328 r = s->clienthello->pre_proc_exts + i;
5329 if (r->present && r->type == type) {
5331 *out = PACKET_data(&r->data);
5333 *outlen = PACKET_remaining(&r->data);
5340 int SSL_free_buffers(SSL *ssl)
5342 RECORD_LAYER *rl = &ssl->rlayer;
5344 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5347 RECORD_LAYER_release(rl);
5351 int SSL_alloc_buffers(SSL *ssl)
5353 return ssl3_setup_buffers(ssl);
5356 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5358 ctx->keylog_callback = cb;
5361 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5363 return ctx->keylog_callback;
5366 static int nss_keylog_int(const char *prefix,
5368 const uint8_t *parameter_1,
5369 size_t parameter_1_len,
5370 const uint8_t *parameter_2,
5371 size_t parameter_2_len)
5374 char *cursor = NULL;
5379 if (ssl->ctx->keylog_callback == NULL)
5383 * Our output buffer will contain the following strings, rendered with
5384 * space characters in between, terminated by a NULL character: first the
5385 * prefix, then the first parameter, then the second parameter. The
5386 * meaning of each parameter depends on the specific key material being
5387 * logged. Note that the first and second parameters are encoded in
5388 * hexadecimal, so we need a buffer that is twice their lengths.
5390 prefix_len = strlen(prefix);
5391 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5392 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5393 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5394 ERR_R_MALLOC_FAILURE);
5398 strcpy(cursor, prefix);
5399 cursor += prefix_len;
5402 for (i = 0; i < parameter_1_len; i++) {
5403 sprintf(cursor, "%02x", parameter_1[i]);
5408 for (i = 0; i < parameter_2_len; i++) {
5409 sprintf(cursor, "%02x", parameter_2[i]);
5414 ssl->ctx->keylog_callback(ssl, (const char *)out);
5415 OPENSSL_clear_free(out, out_len);
5420 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5421 const uint8_t *encrypted_premaster,
5422 size_t encrypted_premaster_len,
5423 const uint8_t *premaster,
5424 size_t premaster_len)
5426 if (encrypted_premaster_len < 8) {
5427 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5428 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5432 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5433 return nss_keylog_int("RSA",
5435 encrypted_premaster,
5441 int ssl_log_secret(SSL *ssl,
5443 const uint8_t *secret,
5446 return nss_keylog_int(label,
5448 ssl->s3->client_random,
5454 #define SSLV2_CIPHER_LEN 3
5456 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5460 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5462 if (PACKET_remaining(cipher_suites) == 0) {
5463 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5464 SSL_R_NO_CIPHERS_SPECIFIED);
5468 if (PACKET_remaining(cipher_suites) % n != 0) {
5469 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5470 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5474 OPENSSL_free(s->s3->tmp.ciphers_raw);
5475 s->s3->tmp.ciphers_raw = NULL;
5476 s->s3->tmp.ciphers_rawlen = 0;
5479 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5480 PACKET sslv2ciphers = *cipher_suites;
5481 unsigned int leadbyte;
5485 * We store the raw ciphers list in SSLv3+ format so we need to do some
5486 * preprocessing to convert the list first. If there are any SSLv2 only
5487 * ciphersuites with a non-zero leading byte then we are going to
5488 * slightly over allocate because we won't store those. But that isn't a
5491 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5492 s->s3->tmp.ciphers_raw = raw;
5494 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5495 ERR_R_MALLOC_FAILURE);
5498 for (s->s3->tmp.ciphers_rawlen = 0;
5499 PACKET_remaining(&sslv2ciphers) > 0;
5500 raw += TLS_CIPHER_LEN) {
5501 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5503 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5506 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5507 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5509 OPENSSL_free(s->s3->tmp.ciphers_raw);
5510 s->s3->tmp.ciphers_raw = NULL;
5511 s->s3->tmp.ciphers_rawlen = 0;
5515 s->s3->tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5517 } else if (!PACKET_memdup(cipher_suites, &s->s3->tmp.ciphers_raw,
5518 &s->s3->tmp.ciphers_rawlen)) {
5519 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5520 ERR_R_INTERNAL_ERROR);
5526 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5527 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5528 STACK_OF(SSL_CIPHER) **scsvs)
5532 if (!PACKET_buf_init(&pkt, bytes, len))
5534 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5537 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5538 STACK_OF(SSL_CIPHER) **skp,
5539 STACK_OF(SSL_CIPHER) **scsvs_out,
5540 int sslv2format, int fatal)
5542 const SSL_CIPHER *c;
5543 STACK_OF(SSL_CIPHER) *sk = NULL;
5544 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5546 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5547 unsigned char cipher[SSLV2_CIPHER_LEN];
5549 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5551 if (PACKET_remaining(cipher_suites) == 0) {
5553 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5554 SSL_R_NO_CIPHERS_SPECIFIED);
5556 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5560 if (PACKET_remaining(cipher_suites) % n != 0) {
5562 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5563 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5565 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5566 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5570 sk = sk_SSL_CIPHER_new_null();
5571 scsvs = sk_SSL_CIPHER_new_null();
5572 if (sk == NULL || scsvs == NULL) {
5574 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5575 ERR_R_MALLOC_FAILURE);
5577 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5581 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5583 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5584 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5585 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5587 if (sslv2format && cipher[0] != '\0')
5590 /* For SSLv2-compat, ignore leading 0-byte. */
5591 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5593 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5594 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5596 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5597 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5599 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5604 if (PACKET_remaining(cipher_suites) > 0) {
5606 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5609 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5616 sk_SSL_CIPHER_free(sk);
5617 if (scsvs_out != NULL)
5620 sk_SSL_CIPHER_free(scsvs);
5623 sk_SSL_CIPHER_free(sk);
5624 sk_SSL_CIPHER_free(scsvs);
5628 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5630 ctx->max_early_data = max_early_data;
5635 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5637 return ctx->max_early_data;
5640 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5642 s->max_early_data = max_early_data;
5647 uint32_t SSL_get_max_early_data(const SSL *s)
5649 return s->max_early_data;
5652 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5654 ctx->recv_max_early_data = recv_max_early_data;
5659 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5661 return ctx->recv_max_early_data;
5664 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5666 s->recv_max_early_data = recv_max_early_data;
5671 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5673 return s->recv_max_early_data;
5676 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5678 /* Return any active Max Fragment Len extension */
5679 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5680 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5682 /* return current SSL connection setting */
5683 return ssl->max_send_fragment;
5686 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5688 /* Return a value regarding an active Max Fragment Len extension */
5689 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5690 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5691 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5693 /* else limit |split_send_fragment| to current |max_send_fragment| */
5694 if (ssl->split_send_fragment > ssl->max_send_fragment)
5695 return ssl->max_send_fragment;
5697 /* return current SSL connection setting */
5698 return ssl->split_send_fragment;
5701 int SSL_stateless(SSL *s)
5705 /* Ensure there is no state left over from a previous invocation */
5711 s->s3->flags |= TLS1_FLAGS_STATELESS;
5712 ret = SSL_accept(s);
5713 s->s3->flags &= ~TLS1_FLAGS_STATELESS;
5715 if (ret > 0 && s->ext.cookieok)
5718 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5724 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5726 ctx->pha_enabled = val;
5729 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5731 ssl->pha_enabled = val;
5734 int SSL_verify_client_post_handshake(SSL *ssl)
5736 if (!SSL_IS_TLS13(ssl)) {
5737 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5741 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5745 if (!SSL_is_init_finished(ssl)) {
5746 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5750 switch (ssl->post_handshake_auth) {
5752 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5755 case SSL_PHA_EXT_SENT:
5756 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5758 case SSL_PHA_EXT_RECEIVED:
5760 case SSL_PHA_REQUEST_PENDING:
5761 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5763 case SSL_PHA_REQUESTED:
5764 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5768 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5770 /* checks verify_mode and algorithm_auth */
5771 if (!send_certificate_request(ssl)) {
5772 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5773 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5777 ossl_statem_set_in_init(ssl, 1);
5781 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5782 SSL_CTX_generate_session_ticket_fn gen_cb,
5783 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5786 ctx->generate_ticket_cb = gen_cb;
5787 ctx->decrypt_ticket_cb = dec_cb;
5788 ctx->ticket_cb_data = arg;
5792 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5793 SSL_allow_early_data_cb_fn cb,
5796 ctx->allow_early_data_cb = cb;
5797 ctx->allow_early_data_cb_data = arg;
5800 void SSL_set_allow_early_data_cb(SSL *s,
5801 SSL_allow_early_data_cb_fn cb,
5804 s->allow_early_data_cb = cb;
5805 s->allow_early_data_cb_data = arg;