2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
12 /* We need to use some engine deprecated APIs */
13 #define OPENSSL_SUPPRESS_DEPRECATED
16 #include "ssl_local.h"
18 #include <openssl/objects.h>
19 #include <openssl/x509v3.h>
20 #include <openssl/rand.h>
21 #include <openssl/ocsp.h>
22 #include <openssl/dh.h>
23 #include <openssl/engine.h>
24 #include <openssl/async.h>
25 #include <openssl/ct.h>
26 #include <openssl/trace.h>
27 #include "internal/cryptlib.h"
28 #include "internal/refcount.h"
29 #include "internal/ktls.h"
31 DEFINE_STACK_OF(OCSP_RESPID)
34 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
35 SSL_MAC_BUF *mac, size_t macsize)
37 return ssl_undefined_function(ssl);
40 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
43 return ssl_undefined_function(ssl);
46 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
47 unsigned char *s, size_t t, size_t *u)
49 return ssl_undefined_function(ssl);
52 static int ssl_undefined_function_4(SSL *ssl, int r)
54 return ssl_undefined_function(ssl);
57 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
60 return ssl_undefined_function(ssl);
63 static int ssl_undefined_function_6(int r)
65 return ssl_undefined_function(NULL);
68 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
69 const char *t, size_t u,
70 const unsigned char *v, size_t w, int x)
72 return ssl_undefined_function(ssl);
75 SSL3_ENC_METHOD ssl3_undef_enc_method = {
76 ssl_undefined_function_1,
77 ssl_undefined_function_2,
78 ssl_undefined_function,
79 ssl_undefined_function_3,
80 ssl_undefined_function_4,
81 ssl_undefined_function_5,
82 NULL, /* client_finished_label */
83 0, /* client_finished_label_len */
84 NULL, /* server_finished_label */
85 0, /* server_finished_label_len */
86 ssl_undefined_function_6,
87 ssl_undefined_function_7,
90 struct ssl_async_args {
94 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
96 int (*func_read) (SSL *, void *, size_t, size_t *);
97 int (*func_write) (SSL *, const void *, size_t, size_t *);
98 int (*func_other) (SSL *);
102 static const struct {
108 DANETLS_MATCHING_FULL, 0, NID_undef
111 DANETLS_MATCHING_2256, 1, NID_sha256
114 DANETLS_MATCHING_2512, 2, NID_sha512
118 static int dane_ctx_enable(struct dane_ctx_st *dctx)
120 const EVP_MD **mdevp;
122 uint8_t mdmax = DANETLS_MATCHING_LAST;
123 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
126 if (dctx->mdevp != NULL)
129 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
130 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
132 if (mdord == NULL || mdevp == NULL) {
135 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
139 /* Install default entries */
140 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
143 if (dane_mds[i].nid == NID_undef ||
144 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
146 mdevp[dane_mds[i].mtype] = md;
147 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
157 static void dane_ctx_final(struct dane_ctx_st *dctx)
159 OPENSSL_free(dctx->mdevp);
162 OPENSSL_free(dctx->mdord);
167 static void tlsa_free(danetls_record *t)
171 OPENSSL_free(t->data);
172 EVP_PKEY_free(t->spki);
176 static void dane_final(SSL_DANE *dane)
178 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
181 sk_X509_pop_free(dane->certs, X509_free);
184 X509_free(dane->mcert);
192 * dane_copy - Copy dane configuration, sans verification state.
194 static int ssl_dane_dup(SSL *to, SSL *from)
199 if (!DANETLS_ENABLED(&from->dane))
202 num = sk_danetls_record_num(from->dane.trecs);
203 dane_final(&to->dane);
204 to->dane.flags = from->dane.flags;
205 to->dane.dctx = &to->ctx->dane;
206 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
208 if (to->dane.trecs == NULL) {
209 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
213 for (i = 0; i < num; ++i) {
214 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
216 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
217 t->data, t->dlen) <= 0)
223 static int dane_mtype_set(struct dane_ctx_st *dctx,
224 const EVP_MD *md, uint8_t mtype, uint8_t ord)
228 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
229 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
233 if (mtype > dctx->mdmax) {
234 const EVP_MD **mdevp;
236 int n = ((int)mtype) + 1;
238 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
240 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
245 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
247 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
252 /* Zero-fill any gaps */
253 for (i = dctx->mdmax + 1; i < mtype; ++i) {
261 dctx->mdevp[mtype] = md;
262 /* Coerce ordinal of disabled matching types to 0 */
263 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
268 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
270 if (mtype > dane->dctx->mdmax)
272 return dane->dctx->mdevp[mtype];
275 static int dane_tlsa_add(SSL_DANE *dane,
278 uint8_t mtype, unsigned const char *data, size_t dlen)
281 const EVP_MD *md = NULL;
282 int ilen = (int)dlen;
286 if (dane->trecs == NULL) {
287 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
291 if (ilen < 0 || dlen != (size_t)ilen) {
292 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
296 if (usage > DANETLS_USAGE_LAST) {
297 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
301 if (selector > DANETLS_SELECTOR_LAST) {
302 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
306 if (mtype != DANETLS_MATCHING_FULL) {
307 md = tlsa_md_get(dane, mtype);
309 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
314 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
315 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
319 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
323 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
324 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
329 t->selector = selector;
331 t->data = OPENSSL_malloc(dlen);
332 if (t->data == NULL) {
334 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
337 memcpy(t->data, data, dlen);
340 /* Validate and cache full certificate or public key */
341 if (mtype == DANETLS_MATCHING_FULL) {
342 const unsigned char *p = data;
344 EVP_PKEY *pkey = NULL;
347 case DANETLS_SELECTOR_CERT:
348 if (!d2i_X509(&cert, &p, ilen) || p < data ||
349 dlen != (size_t)(p - data)) {
351 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
354 if (X509_get0_pubkey(cert) == NULL) {
356 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
360 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
366 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
367 * records that contain full certificates of trust-anchors that are
368 * not present in the wire chain. For usage PKIX-TA(0), we augment
369 * the chain with untrusted Full(0) certificates from DNS, in case
370 * they are missing from the chain.
372 if ((dane->certs == NULL &&
373 (dane->certs = sk_X509_new_null()) == NULL) ||
374 !sk_X509_push(dane->certs, cert)) {
375 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
382 case DANETLS_SELECTOR_SPKI:
383 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
384 dlen != (size_t)(p - data)) {
386 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
391 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
392 * records that contain full bare keys of trust-anchors that are
393 * not present in the wire chain.
395 if (usage == DANETLS_USAGE_DANE_TA)
404 * Find the right insertion point for the new record.
406 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
407 * they can be processed first, as they require no chain building, and no
408 * expiration or hostname checks. Because DANE-EE(3) is numerically
409 * largest, this is accomplished via descending sort by "usage".
411 * We also sort in descending order by matching ordinal to simplify
412 * the implementation of digest agility in the verification code.
414 * The choice of order for the selector is not significant, so we
415 * use the same descending order for consistency.
417 num = sk_danetls_record_num(dane->trecs);
418 for (i = 0; i < num; ++i) {
419 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
421 if (rec->usage > usage)
423 if (rec->usage < usage)
425 if (rec->selector > selector)
427 if (rec->selector < selector)
429 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
434 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
436 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
439 dane->umask |= DANETLS_USAGE_BIT(usage);
445 * Return 0 if there is only one version configured and it was disabled
446 * at configure time. Return 1 otherwise.
448 static int ssl_check_allowed_versions(int min_version, int max_version)
450 int minisdtls = 0, maxisdtls = 0;
452 /* Figure out if we're doing DTLS versions or TLS versions */
453 if (min_version == DTLS1_BAD_VER
454 || min_version >> 8 == DTLS1_VERSION_MAJOR)
456 if (max_version == DTLS1_BAD_VER
457 || max_version >> 8 == DTLS1_VERSION_MAJOR)
459 /* A wildcard version of 0 could be DTLS or TLS. */
460 if ((minisdtls && !maxisdtls && max_version != 0)
461 || (maxisdtls && !minisdtls && min_version != 0)) {
462 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
466 if (minisdtls || maxisdtls) {
467 /* Do DTLS version checks. */
468 if (min_version == 0)
469 /* Ignore DTLS1_BAD_VER */
470 min_version = DTLS1_VERSION;
471 if (max_version == 0)
472 max_version = DTLS1_2_VERSION;
473 #ifdef OPENSSL_NO_DTLS1_2
474 if (max_version == DTLS1_2_VERSION)
475 max_version = DTLS1_VERSION;
477 #ifdef OPENSSL_NO_DTLS1
478 if (min_version == DTLS1_VERSION)
479 min_version = DTLS1_2_VERSION;
481 /* Done massaging versions; do the check. */
483 #ifdef OPENSSL_NO_DTLS1
484 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
485 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
487 #ifdef OPENSSL_NO_DTLS1_2
488 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
489 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
494 /* Regular TLS version checks. */
495 if (min_version == 0)
496 min_version = SSL3_VERSION;
497 if (max_version == 0)
498 max_version = TLS1_3_VERSION;
499 #ifdef OPENSSL_NO_TLS1_3
500 if (max_version == TLS1_3_VERSION)
501 max_version = TLS1_2_VERSION;
503 #ifdef OPENSSL_NO_TLS1_2
504 if (max_version == TLS1_2_VERSION)
505 max_version = TLS1_1_VERSION;
507 #ifdef OPENSSL_NO_TLS1_1
508 if (max_version == TLS1_1_VERSION)
509 max_version = TLS1_VERSION;
511 #ifdef OPENSSL_NO_TLS1
512 if (max_version == TLS1_VERSION)
513 max_version = SSL3_VERSION;
515 #ifdef OPENSSL_NO_SSL3
516 if (min_version == SSL3_VERSION)
517 min_version = TLS1_VERSION;
519 #ifdef OPENSSL_NO_TLS1
520 if (min_version == TLS1_VERSION)
521 min_version = TLS1_1_VERSION;
523 #ifdef OPENSSL_NO_TLS1_1
524 if (min_version == TLS1_1_VERSION)
525 min_version = TLS1_2_VERSION;
527 #ifdef OPENSSL_NO_TLS1_2
528 if (min_version == TLS1_2_VERSION)
529 min_version = TLS1_3_VERSION;
531 /* Done massaging versions; do the check. */
533 #ifdef OPENSSL_NO_SSL3
534 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
536 #ifdef OPENSSL_NO_TLS1
537 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
539 #ifdef OPENSSL_NO_TLS1_1
540 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
542 #ifdef OPENSSL_NO_TLS1_2
543 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
545 #ifdef OPENSSL_NO_TLS1_3
546 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
554 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
556 * Define a VPROC function for HP NonStop build ssl library.
557 * This is used by platform version identification tools.
558 * Do not inline this procedure or make it static.
560 # define OPENSSL_VPROC_STRING_(x) x##_SSL
561 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
562 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
563 void OPENSSL_VPROC_FUNC(void) {}
567 static void clear_ciphers(SSL *s)
569 /* clear the current cipher */
570 ssl_clear_cipher_ctx(s);
571 ssl_clear_hash_ctx(&s->read_hash);
572 ssl_clear_hash_ctx(&s->write_hash);
575 int SSL_clear(SSL *s)
577 if (s->method == NULL) {
578 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
582 if (ssl_clear_bad_session(s)) {
583 SSL_SESSION_free(s->session);
586 SSL_SESSION_free(s->psksession);
587 s->psksession = NULL;
588 OPENSSL_free(s->psksession_id);
589 s->psksession_id = NULL;
590 s->psksession_id_len = 0;
591 s->hello_retry_request = 0;
598 if (s->renegotiate) {
599 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
603 ossl_statem_clear(s);
605 s->version = s->method->version;
606 s->client_version = s->version;
607 s->rwstate = SSL_NOTHING;
609 BUF_MEM_free(s->init_buf);
614 s->key_update = SSL_KEY_UPDATE_NONE;
616 EVP_MD_CTX_free(s->pha_dgst);
619 /* Reset DANE verification result state */
622 X509_free(s->dane.mcert);
623 s->dane.mcert = NULL;
624 s->dane.mtlsa = NULL;
626 /* Clear the verification result peername */
627 X509_VERIFY_PARAM_move_peername(s->param, NULL);
629 /* Clear any shared connection state */
630 OPENSSL_free(s->shared_sigalgs);
631 s->shared_sigalgs = NULL;
632 s->shared_sigalgslen = 0;
635 * Check to see if we were changed into a different method, if so, revert
638 if (s->method != s->ctx->method) {
639 s->method->ssl_free(s);
640 s->method = s->ctx->method;
641 if (!s->method->ssl_new(s))
644 if (!s->method->ssl_clear(s))
648 RECORD_LAYER_clear(&s->rlayer);
653 #ifndef OPENSSL_NO_DEPRECATED_3_0
654 /** Used to change an SSL_CTXs default SSL method type */
655 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
657 STACK_OF(SSL_CIPHER) *sk;
661 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
662 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
665 sk = ssl_create_cipher_list(ctx->method,
666 ctx->tls13_ciphersuites,
668 &(ctx->cipher_list_by_id),
669 OSSL_default_cipher_list(), ctx->cert);
670 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
671 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
678 SSL *SSL_new(SSL_CTX *ctx)
683 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
686 if (ctx->method == NULL) {
687 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
691 s = OPENSSL_zalloc(sizeof(*s));
696 s->lock = CRYPTO_THREAD_lock_new();
697 if (s->lock == NULL) {
703 RECORD_LAYER_init(&s->rlayer, s);
705 s->options = ctx->options;
706 s->dane.flags = ctx->dane.flags;
707 s->min_proto_version = ctx->min_proto_version;
708 s->max_proto_version = ctx->max_proto_version;
710 s->max_cert_list = ctx->max_cert_list;
711 s->max_early_data = ctx->max_early_data;
712 s->recv_max_early_data = ctx->recv_max_early_data;
713 s->num_tickets = ctx->num_tickets;
714 s->pha_enabled = ctx->pha_enabled;
716 /* Shallow copy of the ciphersuites stack */
717 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
718 if (s->tls13_ciphersuites == NULL)
722 * Earlier library versions used to copy the pointer to the CERT, not
723 * its contents; only when setting new parameters for the per-SSL
724 * copy, ssl_cert_new would be called (and the direct reference to
725 * the per-SSL_CTX settings would be lost, but those still were
726 * indirectly accessed for various purposes, and for that reason they
727 * used to be known as s->ctx->default_cert). Now we don't look at the
728 * SSL_CTX's CERT after having duplicated it once.
730 s->cert = ssl_cert_dup(ctx->cert);
734 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
735 s->msg_callback = ctx->msg_callback;
736 s->msg_callback_arg = ctx->msg_callback_arg;
737 s->verify_mode = ctx->verify_mode;
738 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
739 s->record_padding_cb = ctx->record_padding_cb;
740 s->record_padding_arg = ctx->record_padding_arg;
741 s->block_padding = ctx->block_padding;
742 s->sid_ctx_length = ctx->sid_ctx_length;
743 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
745 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
746 s->verify_callback = ctx->default_verify_callback;
747 s->generate_session_id = ctx->generate_session_id;
749 s->param = X509_VERIFY_PARAM_new();
750 if (s->param == NULL)
752 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
753 s->quiet_shutdown = ctx->quiet_shutdown;
755 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
756 s->max_send_fragment = ctx->max_send_fragment;
757 s->split_send_fragment = ctx->split_send_fragment;
758 s->max_pipelines = ctx->max_pipelines;
759 if (s->max_pipelines > 1)
760 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
761 if (ctx->default_read_buf_len > 0)
762 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
767 s->ext.debug_arg = NULL;
768 s->ext.ticket_expected = 0;
769 s->ext.status_type = ctx->ext.status_type;
770 s->ext.status_expected = 0;
771 s->ext.ocsp.ids = NULL;
772 s->ext.ocsp.exts = NULL;
773 s->ext.ocsp.resp = NULL;
774 s->ext.ocsp.resp_len = 0;
776 s->session_ctx = ctx;
777 #ifndef OPENSSL_NO_EC
778 if (ctx->ext.ecpointformats) {
779 s->ext.ecpointformats =
780 OPENSSL_memdup(ctx->ext.ecpointformats,
781 ctx->ext.ecpointformats_len);
782 if (!s->ext.ecpointformats)
784 s->ext.ecpointformats_len =
785 ctx->ext.ecpointformats_len;
788 if (ctx->ext.supportedgroups) {
789 s->ext.supportedgroups =
790 OPENSSL_memdup(ctx->ext.supportedgroups,
791 ctx->ext.supportedgroups_len
792 * sizeof(*ctx->ext.supportedgroups));
793 if (!s->ext.supportedgroups)
795 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
798 #ifndef OPENSSL_NO_NEXTPROTONEG
802 if (s->ctx->ext.alpn) {
803 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
804 if (s->ext.alpn == NULL)
806 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
807 s->ext.alpn_len = s->ctx->ext.alpn_len;
810 s->verified_chain = NULL;
811 s->verify_result = X509_V_OK;
813 s->default_passwd_callback = ctx->default_passwd_callback;
814 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
816 s->method = ctx->method;
818 s->key_update = SSL_KEY_UPDATE_NONE;
820 s->allow_early_data_cb = ctx->allow_early_data_cb;
821 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
823 if (!s->method->ssl_new(s))
826 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
831 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
834 #ifndef OPENSSL_NO_PSK
835 s->psk_client_callback = ctx->psk_client_callback;
836 s->psk_server_callback = ctx->psk_server_callback;
838 s->psk_find_session_cb = ctx->psk_find_session_cb;
839 s->psk_use_session_cb = ctx->psk_use_session_cb;
841 s->async_cb = ctx->async_cb;
842 s->async_cb_arg = ctx->async_cb_arg;
846 #ifndef OPENSSL_NO_CT
847 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
848 ctx->ct_validation_callback_arg))
855 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
859 int SSL_is_dtls(const SSL *s)
861 return SSL_IS_DTLS(s) ? 1 : 0;
864 int SSL_up_ref(SSL *s)
868 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
871 REF_PRINT_COUNT("SSL", s);
872 REF_ASSERT_ISNT(i < 2);
873 return ((i > 1) ? 1 : 0);
876 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
877 unsigned int sid_ctx_len)
879 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
880 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
881 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
884 ctx->sid_ctx_length = sid_ctx_len;
885 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
890 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
891 unsigned int sid_ctx_len)
893 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
894 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
895 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
898 ssl->sid_ctx_length = sid_ctx_len;
899 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
904 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
906 CRYPTO_THREAD_write_lock(ctx->lock);
907 ctx->generate_session_id = cb;
908 CRYPTO_THREAD_unlock(ctx->lock);
912 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
914 CRYPTO_THREAD_write_lock(ssl->lock);
915 ssl->generate_session_id = cb;
916 CRYPTO_THREAD_unlock(ssl->lock);
920 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
924 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
925 * we can "construct" a session to give us the desired check - i.e. to
926 * find if there's a session in the hash table that would conflict with
927 * any new session built out of this id/id_len and the ssl_version in use
932 if (id_len > sizeof(r.session_id))
935 r.ssl_version = ssl->version;
936 r.session_id_length = id_len;
937 memcpy(r.session_id, id, id_len);
939 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
940 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
941 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
945 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
947 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
950 int SSL_set_purpose(SSL *s, int purpose)
952 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
955 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
957 return X509_VERIFY_PARAM_set_trust(s->param, trust);
960 int SSL_set_trust(SSL *s, int trust)
962 return X509_VERIFY_PARAM_set_trust(s->param, trust);
965 int SSL_set1_host(SSL *s, const char *hostname)
967 /* If a hostname is provided and parses as an IP address,
968 * treat it as such. */
969 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
972 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
975 int SSL_add1_host(SSL *s, const char *hostname)
977 /* If a hostname is provided and parses as an IP address,
978 * treat it as such. */
981 ASN1_OCTET_STRING *ip;
984 ip = a2i_IPADDRESS(hostname);
986 /* We didn't want it; only to check if it *is* an IP address */
987 ASN1_OCTET_STRING_free(ip);
989 old_ip = X509_VERIFY_PARAM_get1_ip_asc(s->param);
992 OPENSSL_free(old_ip);
993 /* There can be only one IP address */
997 return X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname);
1001 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
1004 void SSL_set_hostflags(SSL *s, unsigned int flags)
1006 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
1009 const char *SSL_get0_peername(SSL *s)
1011 return X509_VERIFY_PARAM_get0_peername(s->param);
1014 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1016 return dane_ctx_enable(&ctx->dane);
1019 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1021 unsigned long orig = ctx->dane.flags;
1023 ctx->dane.flags |= flags;
1027 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1029 unsigned long orig = ctx->dane.flags;
1031 ctx->dane.flags &= ~flags;
1035 int SSL_dane_enable(SSL *s, const char *basedomain)
1037 SSL_DANE *dane = &s->dane;
1039 if (s->ctx->dane.mdmax == 0) {
1040 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1043 if (dane->trecs != NULL) {
1044 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1049 * Default SNI name. This rejects empty names, while set1_host below
1050 * accepts them and disables host name checks. To avoid side-effects with
1051 * invalid input, set the SNI name first.
1053 if (s->ext.hostname == NULL) {
1054 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1055 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1060 /* Primary RFC6125 reference identifier */
1061 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1062 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1068 dane->dctx = &s->ctx->dane;
1069 dane->trecs = sk_danetls_record_new_null();
1071 if (dane->trecs == NULL) {
1072 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1078 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1080 unsigned long orig = ssl->dane.flags;
1082 ssl->dane.flags |= flags;
1086 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1088 unsigned long orig = ssl->dane.flags;
1090 ssl->dane.flags &= ~flags;
1094 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1096 SSL_DANE *dane = &s->dane;
1098 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1102 *mcert = dane->mcert;
1104 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1109 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1110 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1112 SSL_DANE *dane = &s->dane;
1114 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1118 *usage = dane->mtlsa->usage;
1120 *selector = dane->mtlsa->selector;
1122 *mtype = dane->mtlsa->mtype;
1124 *data = dane->mtlsa->data;
1126 *dlen = dane->mtlsa->dlen;
1131 SSL_DANE *SSL_get0_dane(SSL *s)
1136 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1137 uint8_t mtype, unsigned const char *data, size_t dlen)
1139 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1142 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1145 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1148 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1150 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1153 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1155 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1158 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1163 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1168 void SSL_certs_clear(SSL *s)
1170 ssl_cert_clear_certs(s->cert);
1173 void SSL_free(SSL *s)
1179 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1180 REF_PRINT_COUNT("SSL", s);
1183 REF_ASSERT_ISNT(i < 0);
1185 X509_VERIFY_PARAM_free(s->param);
1186 dane_final(&s->dane);
1187 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1189 RECORD_LAYER_release(&s->rlayer);
1191 /* Ignore return value */
1192 ssl_free_wbio_buffer(s);
1194 BIO_free_all(s->wbio);
1196 BIO_free_all(s->rbio);
1199 BUF_MEM_free(s->init_buf);
1201 /* add extra stuff */
1202 sk_SSL_CIPHER_free(s->cipher_list);
1203 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1204 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1205 sk_SSL_CIPHER_free(s->peer_ciphers);
1207 /* Make the next call work :-) */
1208 if (s->session != NULL) {
1209 ssl_clear_bad_session(s);
1210 SSL_SESSION_free(s->session);
1212 SSL_SESSION_free(s->psksession);
1213 OPENSSL_free(s->psksession_id);
1217 ssl_cert_free(s->cert);
1218 OPENSSL_free(s->shared_sigalgs);
1219 /* Free up if allocated */
1221 OPENSSL_free(s->ext.hostname);
1222 SSL_CTX_free(s->session_ctx);
1223 #ifndef OPENSSL_NO_EC
1224 OPENSSL_free(s->ext.ecpointformats);
1225 OPENSSL_free(s->ext.peer_ecpointformats);
1226 #endif /* OPENSSL_NO_EC */
1227 OPENSSL_free(s->ext.supportedgroups);
1228 OPENSSL_free(s->ext.peer_supportedgroups);
1229 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1230 #ifndef OPENSSL_NO_OCSP
1231 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1233 #ifndef OPENSSL_NO_CT
1234 SCT_LIST_free(s->scts);
1235 OPENSSL_free(s->ext.scts);
1237 OPENSSL_free(s->ext.ocsp.resp);
1238 OPENSSL_free(s->ext.alpn);
1239 OPENSSL_free(s->ext.tls13_cookie);
1240 if (s->clienthello != NULL)
1241 OPENSSL_free(s->clienthello->pre_proc_exts);
1242 OPENSSL_free(s->clienthello);
1243 OPENSSL_free(s->pha_context);
1244 EVP_MD_CTX_free(s->pha_dgst);
1246 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1247 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1249 sk_X509_pop_free(s->verified_chain, X509_free);
1251 if (s->method != NULL)
1252 s->method->ssl_free(s);
1254 SSL_CTX_free(s->ctx);
1256 ASYNC_WAIT_CTX_free(s->waitctx);
1258 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1259 OPENSSL_free(s->ext.npn);
1262 #ifndef OPENSSL_NO_SRTP
1263 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1266 CRYPTO_THREAD_lock_free(s->lock);
1271 void SSL_set0_rbio(SSL *s, BIO *rbio)
1273 BIO_free_all(s->rbio);
1277 void SSL_set0_wbio(SSL *s, BIO *wbio)
1280 * If the output buffering BIO is still in place, remove it
1282 if (s->bbio != NULL)
1283 s->wbio = BIO_pop(s->wbio);
1285 BIO_free_all(s->wbio);
1288 /* Re-attach |bbio| to the new |wbio|. */
1289 if (s->bbio != NULL)
1290 s->wbio = BIO_push(s->bbio, s->wbio);
1293 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1296 * For historical reasons, this function has many different cases in
1297 * ownership handling.
1300 /* If nothing has changed, do nothing */
1301 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1305 * If the two arguments are equal then one fewer reference is granted by the
1306 * caller than we want to take
1308 if (rbio != NULL && rbio == wbio)
1312 * If only the wbio is changed only adopt one reference.
1314 if (rbio == SSL_get_rbio(s)) {
1315 SSL_set0_wbio(s, wbio);
1319 * There is an asymmetry here for historical reasons. If only the rbio is
1320 * changed AND the rbio and wbio were originally different, then we only
1321 * adopt one reference.
1323 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1324 SSL_set0_rbio(s, rbio);
1328 /* Otherwise, adopt both references. */
1329 SSL_set0_rbio(s, rbio);
1330 SSL_set0_wbio(s, wbio);
1333 BIO *SSL_get_rbio(const SSL *s)
1338 BIO *SSL_get_wbio(const SSL *s)
1340 if (s->bbio != NULL) {
1342 * If |bbio| is active, the true caller-configured BIO is its
1345 return BIO_next(s->bbio);
1350 int SSL_get_fd(const SSL *s)
1352 return SSL_get_rfd(s);
1355 int SSL_get_rfd(const SSL *s)
1360 b = SSL_get_rbio(s);
1361 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1363 BIO_get_fd(r, &ret);
1367 int SSL_get_wfd(const SSL *s)
1372 b = SSL_get_wbio(s);
1373 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1375 BIO_get_fd(r, &ret);
1379 #ifndef OPENSSL_NO_SOCK
1380 int SSL_set_fd(SSL *s, int fd)
1385 bio = BIO_new(BIO_s_socket());
1388 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1391 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1392 SSL_set_bio(s, bio, bio);
1393 #ifndef OPENSSL_NO_KTLS
1395 * The new socket is created successfully regardless of ktls_enable.
1396 * ktls_enable doesn't change any functionality of the socket, except
1397 * changing the setsockopt to enable the processing of ktls_start.
1398 * Thus, it is not a problem to call it for non-TLS sockets.
1401 #endif /* OPENSSL_NO_KTLS */
1407 int SSL_set_wfd(SSL *s, int fd)
1409 BIO *rbio = SSL_get_rbio(s);
1411 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1412 || (int)BIO_get_fd(rbio, NULL) != fd) {
1413 BIO *bio = BIO_new(BIO_s_socket());
1416 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1419 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1420 SSL_set0_wbio(s, bio);
1421 #ifndef OPENSSL_NO_KTLS
1423 * The new socket is created successfully regardless of ktls_enable.
1424 * ktls_enable doesn't change any functionality of the socket, except
1425 * changing the setsockopt to enable the processing of ktls_start.
1426 * Thus, it is not a problem to call it for non-TLS sockets.
1429 #endif /* OPENSSL_NO_KTLS */
1432 SSL_set0_wbio(s, rbio);
1437 int SSL_set_rfd(SSL *s, int fd)
1439 BIO *wbio = SSL_get_wbio(s);
1441 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1442 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1443 BIO *bio = BIO_new(BIO_s_socket());
1446 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1449 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1450 SSL_set0_rbio(s, bio);
1453 SSL_set0_rbio(s, wbio);
1460 /* return length of latest Finished message we sent, copy to 'buf' */
1461 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1465 ret = s->s3.tmp.finish_md_len;
1468 memcpy(buf, s->s3.tmp.finish_md, count);
1472 /* return length of latest Finished message we expected, copy to 'buf' */
1473 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1477 ret = s->s3.tmp.peer_finish_md_len;
1480 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1484 int SSL_get_verify_mode(const SSL *s)
1486 return s->verify_mode;
1489 int SSL_get_verify_depth(const SSL *s)
1491 return X509_VERIFY_PARAM_get_depth(s->param);
1494 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1495 return s->verify_callback;
1498 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1500 return ctx->verify_mode;
1503 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1505 return X509_VERIFY_PARAM_get_depth(ctx->param);
1508 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1509 return ctx->default_verify_callback;
1512 void SSL_set_verify(SSL *s, int mode,
1513 int (*callback) (int ok, X509_STORE_CTX *ctx))
1515 s->verify_mode = mode;
1516 if (callback != NULL)
1517 s->verify_callback = callback;
1520 void SSL_set_verify_depth(SSL *s, int depth)
1522 X509_VERIFY_PARAM_set_depth(s->param, depth);
1525 void SSL_set_read_ahead(SSL *s, int yes)
1527 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1530 int SSL_get_read_ahead(const SSL *s)
1532 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1535 int SSL_pending(const SSL *s)
1537 size_t pending = s->method->ssl_pending(s);
1540 * SSL_pending cannot work properly if read-ahead is enabled
1541 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1542 * impossible to fix since SSL_pending cannot report errors that may be
1543 * observed while scanning the new data. (Note that SSL_pending() is
1544 * often used as a boolean value, so we'd better not return -1.)
1546 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1547 * we just return INT_MAX.
1549 return pending < INT_MAX ? (int)pending : INT_MAX;
1552 int SSL_has_pending(const SSL *s)
1555 * Similar to SSL_pending() but returns a 1 to indicate that we have
1556 * unprocessed data available or 0 otherwise (as opposed to the number of
1557 * bytes available). Unlike SSL_pending() this will take into account
1558 * read_ahead data. A 1 return simply indicates that we have unprocessed
1559 * data. That data may not result in any application data, or we may fail
1560 * to parse the records for some reason.
1562 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1565 return RECORD_LAYER_read_pending(&s->rlayer);
1568 X509 *SSL_get1_peer_certificate(const SSL *s)
1570 X509 *r = SSL_get0_peer_certificate(s);
1578 X509 *SSL_get0_peer_certificate(const SSL *s)
1580 if ((s == NULL) || (s->session == NULL))
1583 return s->session->peer;
1586 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1590 if ((s == NULL) || (s->session == NULL))
1593 r = s->session->peer_chain;
1596 * If we are a client, cert_chain includes the peer's own certificate; if
1597 * we are a server, it does not.
1604 * Now in theory, since the calling process own 't' it should be safe to
1605 * modify. We need to be able to read f without being hassled
1607 int SSL_copy_session_id(SSL *t, const SSL *f)
1610 /* Do we need to to SSL locking? */
1611 if (!SSL_set_session(t, SSL_get_session(f))) {
1616 * what if we are setup for one protocol version but want to talk another
1618 if (t->method != f->method) {
1619 t->method->ssl_free(t);
1620 t->method = f->method;
1621 if (t->method->ssl_new(t) == 0)
1625 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1626 ssl_cert_free(t->cert);
1628 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1635 /* Fix this so it checks all the valid key/cert options */
1636 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1638 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1639 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1642 if (ctx->cert->key->privatekey == NULL) {
1643 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1646 return X509_check_private_key
1647 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1650 /* Fix this function so that it takes an optional type parameter */
1651 int SSL_check_private_key(const SSL *ssl)
1654 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1657 if (ssl->cert->key->x509 == NULL) {
1658 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1661 if (ssl->cert->key->privatekey == NULL) {
1662 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1665 return X509_check_private_key(ssl->cert->key->x509,
1666 ssl->cert->key->privatekey);
1669 int SSL_waiting_for_async(SSL *s)
1677 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1679 ASYNC_WAIT_CTX *ctx = s->waitctx;
1683 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1686 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1687 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1689 ASYNC_WAIT_CTX *ctx = s->waitctx;
1693 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1697 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1699 ctx->async_cb = callback;
1703 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1705 ctx->async_cb_arg = arg;
1709 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1711 s->async_cb = callback;
1715 int SSL_set_async_callback_arg(SSL *s, void *arg)
1717 s->async_cb_arg = arg;
1721 int SSL_get_async_status(SSL *s, int *status)
1723 ASYNC_WAIT_CTX *ctx = s->waitctx;
1727 *status = ASYNC_WAIT_CTX_get_status(ctx);
1731 int SSL_accept(SSL *s)
1733 if (s->handshake_func == NULL) {
1734 /* Not properly initialized yet */
1735 SSL_set_accept_state(s);
1738 return SSL_do_handshake(s);
1741 int SSL_connect(SSL *s)
1743 if (s->handshake_func == NULL) {
1744 /* Not properly initialized yet */
1745 SSL_set_connect_state(s);
1748 return SSL_do_handshake(s);
1751 long SSL_get_default_timeout(const SSL *s)
1753 return s->method->get_timeout();
1756 static int ssl_async_wait_ctx_cb(void *arg)
1758 SSL *s = (SSL *)arg;
1760 return s->async_cb(s, s->async_cb_arg);
1763 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1764 int (*func) (void *))
1767 if (s->waitctx == NULL) {
1768 s->waitctx = ASYNC_WAIT_CTX_new();
1769 if (s->waitctx == NULL)
1771 if (s->async_cb != NULL
1772 && !ASYNC_WAIT_CTX_set_callback
1773 (s->waitctx, ssl_async_wait_ctx_cb, s))
1776 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1777 sizeof(struct ssl_async_args))) {
1779 s->rwstate = SSL_NOTHING;
1780 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1783 s->rwstate = SSL_ASYNC_PAUSED;
1786 s->rwstate = SSL_ASYNC_NO_JOBS;
1792 s->rwstate = SSL_NOTHING;
1793 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1794 /* Shouldn't happen */
1799 static int ssl_io_intern(void *vargs)
1801 struct ssl_async_args *args;
1806 args = (struct ssl_async_args *)vargs;
1810 switch (args->type) {
1812 return args->f.func_read(s, buf, num, &s->asyncrw);
1814 return args->f.func_write(s, buf, num, &s->asyncrw);
1816 return args->f.func_other(s);
1821 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1823 if (s->handshake_func == NULL) {
1824 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1828 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1829 s->rwstate = SSL_NOTHING;
1833 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1834 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1835 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1839 * If we are a client and haven't received the ServerHello etc then we
1842 ossl_statem_check_finish_init(s, 0);
1844 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1845 struct ssl_async_args args;
1851 args.type = READFUNC;
1852 args.f.func_read = s->method->ssl_read;
1854 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1855 *readbytes = s->asyncrw;
1858 return s->method->ssl_read(s, buf, num, readbytes);
1862 int SSL_read(SSL *s, void *buf, int num)
1868 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1872 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1875 * The cast is safe here because ret should be <= INT_MAX because num is
1879 ret = (int)readbytes;
1884 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1886 int ret = ssl_read_internal(s, buf, num, readbytes);
1893 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1898 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1899 return SSL_READ_EARLY_DATA_ERROR;
1902 switch (s->early_data_state) {
1903 case SSL_EARLY_DATA_NONE:
1904 if (!SSL_in_before(s)) {
1905 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1906 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1907 return SSL_READ_EARLY_DATA_ERROR;
1911 case SSL_EARLY_DATA_ACCEPT_RETRY:
1912 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1913 ret = SSL_accept(s);
1916 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1917 return SSL_READ_EARLY_DATA_ERROR;
1921 case SSL_EARLY_DATA_READ_RETRY:
1922 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1923 s->early_data_state = SSL_EARLY_DATA_READING;
1924 ret = SSL_read_ex(s, buf, num, readbytes);
1926 * State machine will update early_data_state to
1927 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1930 if (ret > 0 || (ret <= 0 && s->early_data_state
1931 != SSL_EARLY_DATA_FINISHED_READING)) {
1932 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1933 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1934 : SSL_READ_EARLY_DATA_ERROR;
1937 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1940 return SSL_READ_EARLY_DATA_FINISH;
1943 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1944 return SSL_READ_EARLY_DATA_ERROR;
1948 int SSL_get_early_data_status(const SSL *s)
1950 return s->ext.early_data;
1953 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1955 if (s->handshake_func == NULL) {
1956 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1960 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1963 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1964 struct ssl_async_args args;
1970 args.type = READFUNC;
1971 args.f.func_read = s->method->ssl_peek;
1973 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1974 *readbytes = s->asyncrw;
1977 return s->method->ssl_peek(s, buf, num, readbytes);
1981 int SSL_peek(SSL *s, void *buf, int num)
1987 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1991 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1994 * The cast is safe here because ret should be <= INT_MAX because num is
1998 ret = (int)readbytes;
2004 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2006 int ret = ssl_peek_internal(s, buf, num, readbytes);
2013 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2015 if (s->handshake_func == NULL) {
2016 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
2020 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2021 s->rwstate = SSL_NOTHING;
2022 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2026 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2027 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2028 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2029 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2032 /* If we are a client and haven't sent the Finished we better do that */
2033 ossl_statem_check_finish_init(s, 1);
2035 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2037 struct ssl_async_args args;
2040 args.buf = (void *)buf;
2042 args.type = WRITEFUNC;
2043 args.f.func_write = s->method->ssl_write;
2045 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2046 *written = s->asyncrw;
2049 return s->method->ssl_write(s, buf, num, written);
2053 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2057 if (s->handshake_func == NULL) {
2058 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2062 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2063 s->rwstate = SSL_NOTHING;
2064 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2068 if (!BIO_get_ktls_send(s->wbio)) {
2069 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2073 /* If we have an alert to send, lets send it */
2074 if (s->s3.alert_dispatch) {
2075 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2077 /* SSLfatal() already called if appropriate */
2080 /* if it went, fall through and send more stuff */
2083 s->rwstate = SSL_WRITING;
2084 if (BIO_flush(s->wbio) <= 0) {
2085 if (!BIO_should_retry(s->wbio)) {
2086 s->rwstate = SSL_NOTHING;
2089 set_sys_error(EAGAIN);
2095 #ifdef OPENSSL_NO_KTLS
2096 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2097 "can't call ktls_sendfile(), ktls disabled");
2100 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2102 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2103 if ((get_last_sys_error() == EAGAIN) ||
2104 (get_last_sys_error() == EINTR) ||
2105 (get_last_sys_error() == EBUSY))
2106 BIO_set_retry_write(s->wbio);
2109 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2112 s->rwstate = SSL_NOTHING;
2117 int SSL_write(SSL *s, const void *buf, int num)
2123 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2127 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2130 * The cast is safe here because ret should be <= INT_MAX because num is
2139 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2141 int ret = ssl_write_internal(s, buf, num, written);
2148 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2150 int ret, early_data_state;
2152 uint32_t partialwrite;
2154 switch (s->early_data_state) {
2155 case SSL_EARLY_DATA_NONE:
2157 || !SSL_in_before(s)
2158 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2159 && (s->psk_use_session_cb == NULL))) {
2160 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2161 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2166 case SSL_EARLY_DATA_CONNECT_RETRY:
2167 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2168 ret = SSL_connect(s);
2171 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2176 case SSL_EARLY_DATA_WRITE_RETRY:
2177 s->early_data_state = SSL_EARLY_DATA_WRITING;
2179 * We disable partial write for early data because we don't keep track
2180 * of how many bytes we've written between the SSL_write_ex() call and
2181 * the flush if the flush needs to be retried)
2183 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2184 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2185 ret = SSL_write_ex(s, buf, num, &writtmp);
2186 s->mode |= partialwrite;
2188 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2191 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2194 case SSL_EARLY_DATA_WRITE_FLUSH:
2195 /* The buffering BIO is still in place so we need to flush it */
2196 if (statem_flush(s) != 1)
2199 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2202 case SSL_EARLY_DATA_FINISHED_READING:
2203 case SSL_EARLY_DATA_READ_RETRY:
2204 early_data_state = s->early_data_state;
2205 /* We are a server writing to an unauthenticated client */
2206 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2207 ret = SSL_write_ex(s, buf, num, written);
2208 /* The buffering BIO is still in place */
2210 (void)BIO_flush(s->wbio);
2211 s->early_data_state = early_data_state;
2215 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2220 int SSL_shutdown(SSL *s)
2223 * Note that this function behaves differently from what one might
2224 * expect. Return values are 0 for no success (yet), 1 for success; but
2225 * calling it once is usually not enough, even if blocking I/O is used
2226 * (see ssl3_shutdown).
2229 if (s->handshake_func == NULL) {
2230 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2234 if (!SSL_in_init(s)) {
2235 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2236 struct ssl_async_args args;
2239 args.type = OTHERFUNC;
2240 args.f.func_other = s->method->ssl_shutdown;
2242 return ssl_start_async_job(s, &args, ssl_io_intern);
2244 return s->method->ssl_shutdown(s);
2247 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2252 int SSL_key_update(SSL *s, int updatetype)
2255 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2256 * negotiated, and that it is appropriate to call SSL_key_update() instead
2257 * of SSL_renegotiate().
2259 if (!SSL_IS_TLS13(s)) {
2260 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2264 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2265 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2266 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2270 if (!SSL_is_init_finished(s)) {
2271 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2275 ossl_statem_set_in_init(s, 1);
2276 s->key_update = updatetype;
2280 int SSL_get_key_update_type(const SSL *s)
2282 return s->key_update;
2285 int SSL_renegotiate(SSL *s)
2287 if (SSL_IS_TLS13(s)) {
2288 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2292 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2293 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2300 return s->method->ssl_renegotiate(s);
2303 int SSL_renegotiate_abbreviated(SSL *s)
2305 if (SSL_IS_TLS13(s)) {
2306 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2310 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2311 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2318 return s->method->ssl_renegotiate(s);
2321 int SSL_renegotiate_pending(const SSL *s)
2324 * becomes true when negotiation is requested; false again once a
2325 * handshake has finished
2327 return (s->renegotiate != 0);
2330 int SSL_new_session_ticket(SSL *s)
2332 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2333 || !SSL_IS_TLS13(s))
2335 s->ext.extra_tickets_expected++;
2339 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2344 case SSL_CTRL_GET_READ_AHEAD:
2345 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2346 case SSL_CTRL_SET_READ_AHEAD:
2347 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2348 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2351 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2352 s->msg_callback_arg = parg;
2356 return (s->mode |= larg);
2357 case SSL_CTRL_CLEAR_MODE:
2358 return (s->mode &= ~larg);
2359 case SSL_CTRL_GET_MAX_CERT_LIST:
2360 return (long)s->max_cert_list;
2361 case SSL_CTRL_SET_MAX_CERT_LIST:
2364 l = (long)s->max_cert_list;
2365 s->max_cert_list = (size_t)larg;
2367 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2368 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2370 #ifndef OPENSSL_NO_KTLS
2371 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2373 #endif /* OPENSSL_NO_KTLS */
2374 s->max_send_fragment = larg;
2375 if (s->max_send_fragment < s->split_send_fragment)
2376 s->split_send_fragment = s->max_send_fragment;
2378 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2379 if ((size_t)larg > s->max_send_fragment || larg == 0)
2381 s->split_send_fragment = larg;
2383 case SSL_CTRL_SET_MAX_PIPELINES:
2384 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2386 s->max_pipelines = larg;
2388 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2390 case SSL_CTRL_GET_RI_SUPPORT:
2391 return s->s3.send_connection_binding;
2392 case SSL_CTRL_CERT_FLAGS:
2393 return (s->cert->cert_flags |= larg);
2394 case SSL_CTRL_CLEAR_CERT_FLAGS:
2395 return (s->cert->cert_flags &= ~larg);
2397 case SSL_CTRL_GET_RAW_CIPHERLIST:
2399 if (s->s3.tmp.ciphers_raw == NULL)
2401 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2402 return (int)s->s3.tmp.ciphers_rawlen;
2404 return TLS_CIPHER_LEN;
2406 case SSL_CTRL_GET_EXTMS_SUPPORT:
2407 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2409 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2413 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2414 return ssl_check_allowed_versions(larg, s->max_proto_version)
2415 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2416 &s->min_proto_version);
2417 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2418 return s->min_proto_version;
2419 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2420 return ssl_check_allowed_versions(s->min_proto_version, larg)
2421 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2422 &s->max_proto_version);
2423 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2424 return s->max_proto_version;
2426 return s->method->ssl_ctrl(s, cmd, larg, parg);
2430 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2433 case SSL_CTRL_SET_MSG_CALLBACK:
2434 s->msg_callback = (void (*)
2435 (int write_p, int version, int content_type,
2436 const void *buf, size_t len, SSL *ssl,
2441 return s->method->ssl_callback_ctrl(s, cmd, fp);
2445 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2447 return ctx->sessions;
2450 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2453 /* For some cases with ctx == NULL perform syntax checks */
2456 case SSL_CTRL_SET_GROUPS_LIST:
2457 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2458 case SSL_CTRL_SET_SIGALGS_LIST:
2459 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2460 return tls1_set_sigalgs_list(NULL, parg, 0);
2467 case SSL_CTRL_GET_READ_AHEAD:
2468 return ctx->read_ahead;
2469 case SSL_CTRL_SET_READ_AHEAD:
2470 l = ctx->read_ahead;
2471 ctx->read_ahead = larg;
2474 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2475 ctx->msg_callback_arg = parg;
2478 case SSL_CTRL_GET_MAX_CERT_LIST:
2479 return (long)ctx->max_cert_list;
2480 case SSL_CTRL_SET_MAX_CERT_LIST:
2483 l = (long)ctx->max_cert_list;
2484 ctx->max_cert_list = (size_t)larg;
2487 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2490 l = (long)ctx->session_cache_size;
2491 ctx->session_cache_size = (size_t)larg;
2493 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2494 return (long)ctx->session_cache_size;
2495 case SSL_CTRL_SET_SESS_CACHE_MODE:
2496 l = ctx->session_cache_mode;
2497 ctx->session_cache_mode = larg;
2499 case SSL_CTRL_GET_SESS_CACHE_MODE:
2500 return ctx->session_cache_mode;
2502 case SSL_CTRL_SESS_NUMBER:
2503 return lh_SSL_SESSION_num_items(ctx->sessions);
2504 case SSL_CTRL_SESS_CONNECT:
2505 return tsan_load(&ctx->stats.sess_connect);
2506 case SSL_CTRL_SESS_CONNECT_GOOD:
2507 return tsan_load(&ctx->stats.sess_connect_good);
2508 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2509 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2510 case SSL_CTRL_SESS_ACCEPT:
2511 return tsan_load(&ctx->stats.sess_accept);
2512 case SSL_CTRL_SESS_ACCEPT_GOOD:
2513 return tsan_load(&ctx->stats.sess_accept_good);
2514 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2515 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2516 case SSL_CTRL_SESS_HIT:
2517 return tsan_load(&ctx->stats.sess_hit);
2518 case SSL_CTRL_SESS_CB_HIT:
2519 return tsan_load(&ctx->stats.sess_cb_hit);
2520 case SSL_CTRL_SESS_MISSES:
2521 return tsan_load(&ctx->stats.sess_miss);
2522 case SSL_CTRL_SESS_TIMEOUTS:
2523 return tsan_load(&ctx->stats.sess_timeout);
2524 case SSL_CTRL_SESS_CACHE_FULL:
2525 return tsan_load(&ctx->stats.sess_cache_full);
2527 return (ctx->mode |= larg);
2528 case SSL_CTRL_CLEAR_MODE:
2529 return (ctx->mode &= ~larg);
2530 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2531 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2533 ctx->max_send_fragment = larg;
2534 if (ctx->max_send_fragment < ctx->split_send_fragment)
2535 ctx->split_send_fragment = ctx->max_send_fragment;
2537 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2538 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2540 ctx->split_send_fragment = larg;
2542 case SSL_CTRL_SET_MAX_PIPELINES:
2543 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2545 ctx->max_pipelines = larg;
2547 case SSL_CTRL_CERT_FLAGS:
2548 return (ctx->cert->cert_flags |= larg);
2549 case SSL_CTRL_CLEAR_CERT_FLAGS:
2550 return (ctx->cert->cert_flags &= ~larg);
2551 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2552 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2553 && ssl_set_version_bound(ctx->method->version, (int)larg,
2554 &ctx->min_proto_version);
2555 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2556 return ctx->min_proto_version;
2557 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2558 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2559 && ssl_set_version_bound(ctx->method->version, (int)larg,
2560 &ctx->max_proto_version);
2561 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2562 return ctx->max_proto_version;
2564 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2568 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2571 case SSL_CTRL_SET_MSG_CALLBACK:
2572 ctx->msg_callback = (void (*)
2573 (int write_p, int version, int content_type,
2574 const void *buf, size_t len, SSL *ssl,
2579 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2583 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2592 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2593 const SSL_CIPHER *const *bp)
2595 if ((*ap)->id > (*bp)->id)
2597 if ((*ap)->id < (*bp)->id)
2602 /** return a STACK of the ciphers available for the SSL and in order of
2604 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2607 if (s->cipher_list != NULL) {
2608 return s->cipher_list;
2609 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2610 return s->ctx->cipher_list;
2616 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2618 if ((s == NULL) || !s->server)
2620 return s->peer_ciphers;
2623 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2625 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2628 ciphers = SSL_get_ciphers(s);
2631 if (!ssl_set_client_disabled(s))
2633 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2634 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2635 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2637 sk = sk_SSL_CIPHER_new_null();
2640 if (!sk_SSL_CIPHER_push(sk, c)) {
2641 sk_SSL_CIPHER_free(sk);
2649 /** return a STACK of the ciphers available for the SSL and in order of
2651 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2654 if (s->cipher_list_by_id != NULL) {
2655 return s->cipher_list_by_id;
2656 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2657 return s->ctx->cipher_list_by_id;
2663 /** The old interface to get the same thing as SSL_get_ciphers() */
2664 const char *SSL_get_cipher_list(const SSL *s, int n)
2666 const SSL_CIPHER *c;
2667 STACK_OF(SSL_CIPHER) *sk;
2671 sk = SSL_get_ciphers(s);
2672 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2674 c = sk_SSL_CIPHER_value(sk, n);
2680 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2682 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2685 return ctx->cipher_list;
2690 * Distinguish between ciphers controlled by set_ciphersuite() and
2691 * set_cipher_list() when counting.
2693 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2696 const SSL_CIPHER *c;
2700 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2701 c = sk_SSL_CIPHER_value(sk, i);
2702 if (c->min_tls >= TLS1_3_VERSION)
2709 /** specify the ciphers to be used by default by the SSL_CTX */
2710 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2712 STACK_OF(SSL_CIPHER) *sk;
2714 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2715 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2718 * ssl_create_cipher_list may return an empty stack if it was unable to
2719 * find a cipher matching the given rule string (for example if the rule
2720 * string specifies a cipher which has been disabled). This is not an
2721 * error as far as ssl_create_cipher_list is concerned, and hence
2722 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2726 else if (cipher_list_tls12_num(sk) == 0) {
2727 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2733 /** specify the ciphers to be used by the SSL */
2734 int SSL_set_cipher_list(SSL *s, const char *str)
2736 STACK_OF(SSL_CIPHER) *sk;
2738 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2739 &s->cipher_list, &s->cipher_list_by_id, str,
2741 /* see comment in SSL_CTX_set_cipher_list */
2744 else if (cipher_list_tls12_num(sk) == 0) {
2745 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2751 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2754 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2755 const SSL_CIPHER *c;
2759 || s->peer_ciphers == NULL
2764 clntsk = s->peer_ciphers;
2765 srvrsk = SSL_get_ciphers(s);
2766 if (clntsk == NULL || srvrsk == NULL)
2769 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2772 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2775 c = sk_SSL_CIPHER_value(clntsk, i);
2776 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2779 n = strlen(c->name);
2796 * Return the requested servername (SNI) value. Note that the behaviour varies
2798 * - whether this is called by the client or the server,
2799 * - if we are before or during/after the handshake,
2800 * - if a resumption or normal handshake is being attempted/has occurred
2801 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2803 * Note that only the host_name type is defined (RFC 3546).
2805 const char *SSL_get_servername(const SSL *s, const int type)
2808 * If we don't know if we are the client or the server yet then we assume
2811 int server = s->handshake_func == NULL ? 0 : s->server;
2812 if (type != TLSEXT_NAMETYPE_host_name)
2818 * In TLSv1.3 on the server SNI is not associated with the session
2819 * but in TLSv1.2 or below it is.
2821 * Before the handshake:
2824 * During/after the handshake (TLSv1.2 or below resumption occurred):
2825 * - If a servername was accepted by the server in the original
2826 * handshake then it will return that servername, or NULL otherwise.
2828 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2829 * - The function will return the servername requested by the client in
2830 * this handshake or NULL if none was requested.
2832 if (s->hit && !SSL_IS_TLS13(s))
2833 return s->session->ext.hostname;
2838 * Before the handshake:
2839 * - If a servername has been set via a call to
2840 * SSL_set_tlsext_host_name() then it will return that servername
2841 * - If one has not been set, but a TLSv1.2 resumption is being
2842 * attempted and the session from the original handshake had a
2843 * servername accepted by the server then it will return that
2845 * - Otherwise it returns NULL
2847 * During/after the handshake (TLSv1.2 or below resumption occurred):
2848 * - If the session from the orignal handshake had a servername accepted
2849 * by the server then it will return that servername.
2850 * - Otherwise it returns the servername set via
2851 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2853 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2854 * - It will return the servername set via SSL_set_tlsext_host_name()
2855 * (or NULL if it was not called).
2857 if (SSL_in_before(s)) {
2858 if (s->ext.hostname == NULL
2859 && s->session != NULL
2860 && s->session->ssl_version != TLS1_3_VERSION)
2861 return s->session->ext.hostname;
2863 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2864 return s->session->ext.hostname;
2868 return s->ext.hostname;
2871 int SSL_get_servername_type(const SSL *s)
2873 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2874 return TLSEXT_NAMETYPE_host_name;
2879 * SSL_select_next_proto implements the standard protocol selection. It is
2880 * expected that this function is called from the callback set by
2881 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2882 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2883 * not included in the length. A byte string of length 0 is invalid. No byte
2884 * string may be truncated. The current, but experimental algorithm for
2885 * selecting the protocol is: 1) If the server doesn't support NPN then this
2886 * is indicated to the callback. In this case, the client application has to
2887 * abort the connection or have a default application level protocol. 2) If
2888 * the server supports NPN, but advertises an empty list then the client
2889 * selects the first protocol in its list, but indicates via the API that this
2890 * fallback case was enacted. 3) Otherwise, the client finds the first
2891 * protocol in the server's list that it supports and selects this protocol.
2892 * This is because it's assumed that the server has better information about
2893 * which protocol a client should use. 4) If the client doesn't support any
2894 * of the server's advertised protocols, then this is treated the same as
2895 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2896 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2898 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2899 const unsigned char *server,
2900 unsigned int server_len,
2901 const unsigned char *client, unsigned int client_len)
2904 const unsigned char *result;
2905 int status = OPENSSL_NPN_UNSUPPORTED;
2908 * For each protocol in server preference order, see if we support it.
2910 for (i = 0; i < server_len;) {
2911 for (j = 0; j < client_len;) {
2912 if (server[i] == client[j] &&
2913 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2914 /* We found a match */
2915 result = &server[i];
2916 status = OPENSSL_NPN_NEGOTIATED;
2926 /* There's no overlap between our protocols and the server's list. */
2928 status = OPENSSL_NPN_NO_OVERLAP;
2931 *out = (unsigned char *)result + 1;
2932 *outlen = result[0];
2936 #ifndef OPENSSL_NO_NEXTPROTONEG
2938 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2939 * client's requested protocol for this connection and returns 0. If the
2940 * client didn't request any protocol, then *data is set to NULL. Note that
2941 * the client can request any protocol it chooses. The value returned from
2942 * this function need not be a member of the list of supported protocols
2943 * provided by the callback.
2945 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2949 if (*data == NULL) {
2952 *len = (unsigned int)s->ext.npn_len;
2957 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2958 * a TLS server needs a list of supported protocols for Next Protocol
2959 * Negotiation. The returned list must be in wire format. The list is
2960 * returned by setting |out| to point to it and |outlen| to its length. This
2961 * memory will not be modified, but one should assume that the SSL* keeps a
2962 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2963 * wishes to advertise. Otherwise, no such extension will be included in the
2966 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2967 SSL_CTX_npn_advertised_cb_func cb,
2970 ctx->ext.npn_advertised_cb = cb;
2971 ctx->ext.npn_advertised_cb_arg = arg;
2975 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2976 * client needs to select a protocol from the server's provided list. |out|
2977 * must be set to point to the selected protocol (which may be within |in|).
2978 * The length of the protocol name must be written into |outlen|. The
2979 * server's advertised protocols are provided in |in| and |inlen|. The
2980 * callback can assume that |in| is syntactically valid. The client must
2981 * select a protocol. It is fatal to the connection if this callback returns
2982 * a value other than SSL_TLSEXT_ERR_OK.
2984 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2985 SSL_CTX_npn_select_cb_func cb,
2988 ctx->ext.npn_select_cb = cb;
2989 ctx->ext.npn_select_cb_arg = arg;
2994 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2995 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2996 * length-prefixed strings). Returns 0 on success.
2998 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2999 unsigned int protos_len)
3001 OPENSSL_free(ctx->ext.alpn);
3002 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
3003 if (ctx->ext.alpn == NULL) {
3004 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3007 ctx->ext.alpn_len = protos_len;
3013 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3014 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3015 * length-prefixed strings). Returns 0 on success.
3017 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3018 unsigned int protos_len)
3020 OPENSSL_free(ssl->ext.alpn);
3021 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
3022 if (ssl->ext.alpn == NULL) {
3023 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
3026 ssl->ext.alpn_len = protos_len;
3032 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3033 * called during ClientHello processing in order to select an ALPN protocol
3034 * from the client's list of offered protocols.
3036 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3037 SSL_CTX_alpn_select_cb_func cb,
3040 ctx->ext.alpn_select_cb = cb;
3041 ctx->ext.alpn_select_cb_arg = arg;
3045 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3046 * On return it sets |*data| to point to |*len| bytes of protocol name
3047 * (not including the leading length-prefix byte). If the server didn't
3048 * respond with a negotiated protocol then |*len| will be zero.
3050 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3053 *data = ssl->s3.alpn_selected;
3057 *len = (unsigned int)ssl->s3.alpn_selected_len;
3060 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3061 const char *label, size_t llen,
3062 const unsigned char *context, size_t contextlen,
3065 if (s->session == NULL
3066 || (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER))
3069 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3071 contextlen, use_context);
3074 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3075 const char *label, size_t llen,
3076 const unsigned char *context,
3079 if (s->version != TLS1_3_VERSION)
3082 return tls13_export_keying_material_early(s, out, olen, label, llen,
3083 context, contextlen);
3086 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3088 const unsigned char *session_id = a->session_id;
3090 unsigned char tmp_storage[4];
3092 if (a->session_id_length < sizeof(tmp_storage)) {
3093 memset(tmp_storage, 0, sizeof(tmp_storage));
3094 memcpy(tmp_storage, a->session_id, a->session_id_length);
3095 session_id = tmp_storage;
3099 ((unsigned long)session_id[0]) |
3100 ((unsigned long)session_id[1] << 8L) |
3101 ((unsigned long)session_id[2] << 16L) |
3102 ((unsigned long)session_id[3] << 24L);
3107 * NB: If this function (or indeed the hash function which uses a sort of
3108 * coarser function than this one) is changed, ensure
3109 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3110 * being able to construct an SSL_SESSION that will collide with any existing
3111 * session with a matching session ID.
3113 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3115 if (a->ssl_version != b->ssl_version)
3117 if (a->session_id_length != b->session_id_length)
3119 return memcmp(a->session_id, b->session_id, a->session_id_length);
3123 * These wrapper functions should remain rather than redeclaring
3124 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3125 * variable. The reason is that the functions aren't static, they're exposed
3129 SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3130 const SSL_METHOD *meth)
3132 SSL_CTX *ret = NULL;
3135 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
3139 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3142 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3143 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3146 ret = OPENSSL_zalloc(sizeof(*ret));
3150 ret->libctx = libctx;
3151 if (propq != NULL) {
3152 ret->propq = OPENSSL_strdup(propq);
3153 if (ret->propq == NULL)
3158 ret->min_proto_version = 0;
3159 ret->max_proto_version = 0;
3160 ret->mode = SSL_MODE_AUTO_RETRY;
3161 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3162 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3163 /* We take the system default. */
3164 ret->session_timeout = meth->get_timeout();
3165 ret->references = 1;
3166 ret->lock = CRYPTO_THREAD_lock_new();
3167 if (ret->lock == NULL) {
3168 SSLerr(0, ERR_R_MALLOC_FAILURE);
3172 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3173 ret->verify_mode = SSL_VERIFY_NONE;
3174 if ((ret->cert = ssl_cert_new()) == NULL)
3177 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3178 if (ret->sessions == NULL)
3180 ret->cert_store = X509_STORE_new();
3181 if (ret->cert_store == NULL)
3183 #ifndef OPENSSL_NO_CT
3184 ret->ctlog_store = CTLOG_STORE_new_with_libctx(libctx, propq);
3185 if (ret->ctlog_store == NULL)
3189 /* initialize cipher/digest methods table */
3190 if (!ssl_load_ciphers(ret))
3192 /* initialise sig algs */
3193 if (!ssl_setup_sig_algs(ret))
3197 if (!ssl_load_groups(ret))
3200 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3203 if (!ssl_create_cipher_list(ret->method,
3204 ret->tls13_ciphersuites,
3205 &ret->cipher_list, &ret->cipher_list_by_id,
3206 OSSL_default_cipher_list(), ret->cert)
3207 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3208 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3212 ret->param = X509_VERIFY_PARAM_new();
3213 if (ret->param == NULL)
3217 * If these aren't available from the provider we'll get NULL returns.
3218 * That's fine but will cause errors later if SSLv3 is negotiated
3220 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3221 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3223 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3226 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3229 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3232 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3235 /* No compression for DTLS */
3236 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3237 ret->comp_methods = SSL_COMP_get_compression_methods();
3239 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3240 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3242 /* Setup RFC5077 ticket keys */
3243 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3244 sizeof(ret->ext.tick_key_name)) <= 0)
3245 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3246 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3247 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3248 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3249 ret->options |= SSL_OP_NO_TICKET;
3251 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3252 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3255 #ifndef OPENSSL_NO_SRP
3256 if (!SSL_CTX_SRP_CTX_init(ret))
3259 #ifndef OPENSSL_NO_ENGINE
3260 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3261 # define eng_strx(x) #x
3262 # define eng_str(x) eng_strx(x)
3263 /* Use specific client engine automatically... ignore errors */
3266 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3269 ENGINE_load_builtin_engines();
3270 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3272 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3278 * Default is to connect to non-RI servers. When RI is more widely
3279 * deployed might change this.
3281 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3283 * Disable compression by default to prevent CRIME. Applications can
3284 * re-enable compression by configuring
3285 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3286 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3287 * middlebox compatibility by default. This may be disabled by default in
3288 * a later OpenSSL version.
3290 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3292 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3295 * We cannot usefully set a default max_early_data here (which gets
3296 * propagated in SSL_new(), for the following reason: setting the
3297 * SSL field causes tls_construct_stoc_early_data() to tell the
3298 * client that early data will be accepted when constructing a TLS 1.3
3299 * session ticket, and the client will accordingly send us early data
3300 * when using that ticket (if the client has early data to send).
3301 * However, in order for the early data to actually be consumed by
3302 * the application, the application must also have calls to
3303 * SSL_read_early_data(); otherwise we'll just skip past the early data
3304 * and ignore it. So, since the application must add calls to
3305 * SSL_read_early_data(), we also require them to add
3306 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3307 * eliminating the bandwidth-wasting early data in the case described
3310 ret->max_early_data = 0;
3313 * Default recv_max_early_data is a fully loaded single record. Could be
3314 * split across multiple records in practice. We set this differently to
3315 * max_early_data so that, in the default case, we do not advertise any
3316 * support for early_data, but if a client were to send us some (e.g.
3317 * because of an old, stale ticket) then we will tolerate it and skip over
3320 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3322 /* By default we send two session tickets automatically in TLSv1.3 */
3323 ret->num_tickets = 2;
3325 ssl_ctx_system_config(ret);
3329 SSLerr(0, ERR_R_MALLOC_FAILURE);
3335 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3337 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3340 int SSL_CTX_up_ref(SSL_CTX *ctx)
3344 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3347 REF_PRINT_COUNT("SSL_CTX", ctx);
3348 REF_ASSERT_ISNT(i < 2);
3349 return ((i > 1) ? 1 : 0);
3352 void SSL_CTX_free(SSL_CTX *a)
3360 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3361 REF_PRINT_COUNT("SSL_CTX", a);
3364 REF_ASSERT_ISNT(i < 0);
3366 X509_VERIFY_PARAM_free(a->param);
3367 dane_ctx_final(&a->dane);
3370 * Free internal session cache. However: the remove_cb() may reference
3371 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3372 * after the sessions were flushed.
3373 * As the ex_data handling routines might also touch the session cache,
3374 * the most secure solution seems to be: empty (flush) the cache, then
3375 * free ex_data, then finally free the cache.
3376 * (See ticket [openssl.org #212].)
3378 if (a->sessions != NULL)
3379 SSL_CTX_flush_sessions(a, 0);
3381 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3382 lh_SSL_SESSION_free(a->sessions);
3383 X509_STORE_free(a->cert_store);
3384 #ifndef OPENSSL_NO_CT
3385 CTLOG_STORE_free(a->ctlog_store);
3387 sk_SSL_CIPHER_free(a->cipher_list);
3388 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3389 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3390 ssl_cert_free(a->cert);
3391 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3392 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3393 sk_X509_pop_free(a->extra_certs, X509_free);
3394 a->comp_methods = NULL;
3395 #ifndef OPENSSL_NO_SRTP
3396 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3398 #ifndef OPENSSL_NO_SRP
3399 SSL_CTX_SRP_CTX_free(a);
3401 #ifndef OPENSSL_NO_ENGINE
3402 ENGINE_finish(a->client_cert_engine);
3405 #ifndef OPENSSL_NO_EC
3406 OPENSSL_free(a->ext.ecpointformats);
3408 OPENSSL_free(a->ext.supportedgroups);
3409 OPENSSL_free(a->ext.alpn);
3410 OPENSSL_secure_free(a->ext.secure);
3412 ssl_evp_md_free(a->md5);
3413 ssl_evp_md_free(a->sha1);
3415 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3416 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3417 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3418 ssl_evp_md_free(a->ssl_digest_methods[j]);
3419 for (j = 0; j < a->group_list_len; j++) {
3420 OPENSSL_free(a->group_list[j].tlsname);
3421 OPENSSL_free(a->group_list[j].realname);
3422 OPENSSL_free(a->group_list[j].algorithm);
3424 OPENSSL_free(a->group_list);
3426 OPENSSL_free(a->sigalg_lookup_cache);
3428 CRYPTO_THREAD_lock_free(a->lock);
3430 OPENSSL_free(a->propq);
3435 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3437 ctx->default_passwd_callback = cb;
3440 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3442 ctx->default_passwd_callback_userdata = u;
3445 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3447 return ctx->default_passwd_callback;
3450 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3452 return ctx->default_passwd_callback_userdata;
3455 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3457 s->default_passwd_callback = cb;
3460 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3462 s->default_passwd_callback_userdata = u;
3465 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3467 return s->default_passwd_callback;
3470 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3472 return s->default_passwd_callback_userdata;
3475 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3476 int (*cb) (X509_STORE_CTX *, void *),
3479 ctx->app_verify_callback = cb;
3480 ctx->app_verify_arg = arg;
3483 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3484 int (*cb) (int, X509_STORE_CTX *))
3486 ctx->verify_mode = mode;
3487 ctx->default_verify_callback = cb;
3490 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3492 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3495 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3497 ssl_cert_set_cert_cb(c->cert, cb, arg);
3500 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3502 ssl_cert_set_cert_cb(s->cert, cb, arg);
3505 void ssl_set_masks(SSL *s)
3508 uint32_t *pvalid = s->s3.tmp.valid_flags;
3509 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3510 unsigned long mask_k, mask_a;
3511 #ifndef OPENSSL_NO_EC
3512 int have_ecc_cert, ecdsa_ok;
3517 #ifndef OPENSSL_NO_DH
3518 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3523 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3524 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3525 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3526 #ifndef OPENSSL_NO_EC
3527 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3532 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3533 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3535 #ifndef OPENSSL_NO_GOST
3536 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3537 mask_k |= SSL_kGOST | SSL_kGOST18;
3538 mask_a |= SSL_aGOST12;
3540 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3541 mask_k |= SSL_kGOST | SSL_kGOST18;
3542 mask_a |= SSL_aGOST12;
3544 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3545 mask_k |= SSL_kGOST;
3546 mask_a |= SSL_aGOST01;
3557 * If we only have an RSA-PSS certificate allow RSA authentication
3558 * if TLS 1.2 and peer supports it.
3561 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3562 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3563 && TLS1_get_version(s) == TLS1_2_VERSION))
3570 mask_a |= SSL_aNULL;
3573 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3574 * depending on the key usage extension.
3576 #ifndef OPENSSL_NO_EC
3577 if (have_ecc_cert) {
3579 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3580 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3581 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3584 mask_a |= SSL_aECDSA;
3586 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3587 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3588 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3589 && TLS1_get_version(s) == TLS1_2_VERSION)
3590 mask_a |= SSL_aECDSA;
3592 /* Allow Ed448 for TLS 1.2 if peer supports it */
3593 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3594 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3595 && TLS1_get_version(s) == TLS1_2_VERSION)
3596 mask_a |= SSL_aECDSA;
3599 #ifndef OPENSSL_NO_EC
3600 mask_k |= SSL_kECDHE;
3603 #ifndef OPENSSL_NO_PSK
3606 if (mask_k & SSL_kRSA)
3607 mask_k |= SSL_kRSAPSK;
3608 if (mask_k & SSL_kDHE)
3609 mask_k |= SSL_kDHEPSK;
3610 if (mask_k & SSL_kECDHE)
3611 mask_k |= SSL_kECDHEPSK;
3614 s->s3.tmp.mask_k = mask_k;
3615 s->s3.tmp.mask_a = mask_a;
3618 #ifndef OPENSSL_NO_EC
3620 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3622 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3623 /* key usage, if present, must allow signing */
3624 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3625 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3626 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3630 return 1; /* all checks are ok */
3635 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3636 size_t *serverinfo_length)
3638 CERT_PKEY *cpk = s->s3.tmp.cert;
3639 *serverinfo_length = 0;
3641 if (cpk == NULL || cpk->serverinfo == NULL)
3644 *serverinfo = cpk->serverinfo;
3645 *serverinfo_length = cpk->serverinfo_length;
3649 void ssl_update_cache(SSL *s, int mode)
3654 * If the session_id_length is 0, we are not supposed to cache it, and it
3655 * would be rather hard to do anyway :-)
3657 if (s->session->session_id_length == 0)
3661 * If sid_ctx_length is 0 there is no specific application context
3662 * associated with this session, so when we try to resume it and
3663 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3664 * indication that this is actually a session for the proper application
3665 * context, and the *handshake* will fail, not just the resumption attempt.
3666 * Do not cache (on the server) these sessions that are not resumable
3667 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3669 if (s->server && s->session->sid_ctx_length == 0
3670 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3673 i = s->session_ctx->session_cache_mode;
3675 && (!s->hit || SSL_IS_TLS13(s))) {
3677 * Add the session to the internal cache. In server side TLSv1.3 we
3678 * normally don't do this because by default it's a full stateless ticket
3679 * with only a dummy session id so there is no reason to cache it,
3681 * - we are doing early_data, in which case we cache so that we can
3683 * - the application has set a remove_session_cb so needs to know about
3684 * session timeout events
3685 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3687 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3688 && (!SSL_IS_TLS13(s)
3690 || (s->max_early_data > 0
3691 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3692 || s->session_ctx->remove_session_cb != NULL
3693 || (s->options & SSL_OP_NO_TICKET) != 0))
3694 SSL_CTX_add_session(s->session_ctx, s->session);
3697 * Add the session to the external cache. We do this even in server side
3698 * TLSv1.3 without early data because some applications just want to
3699 * know about the creation of a session and aren't doing a full cache.
3701 if (s->session_ctx->new_session_cb != NULL) {
3702 SSL_SESSION_up_ref(s->session);
3703 if (!s->session_ctx->new_session_cb(s, s->session))
3704 SSL_SESSION_free(s->session);
3708 /* auto flush every 255 connections */
3709 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3710 TSAN_QUALIFIER int *stat;
3711 if (mode & SSL_SESS_CACHE_CLIENT)
3712 stat = &s->session_ctx->stats.sess_connect_good;
3714 stat = &s->session_ctx->stats.sess_accept_good;
3715 if ((tsan_load(stat) & 0xff) == 0xff)
3716 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3720 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3725 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3730 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3734 if (s->method != meth) {
3735 const SSL_METHOD *sm = s->method;
3736 int (*hf) (SSL *) = s->handshake_func;
3738 if (sm->version == meth->version)
3743 ret = s->method->ssl_new(s);
3746 if (hf == sm->ssl_connect)
3747 s->handshake_func = meth->ssl_connect;
3748 else if (hf == sm->ssl_accept)
3749 s->handshake_func = meth->ssl_accept;
3754 int SSL_get_error(const SSL *s, int i)
3761 return SSL_ERROR_NONE;
3764 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3765 * where we do encode the error
3767 if ((l = ERR_peek_error()) != 0) {
3768 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3769 return SSL_ERROR_SYSCALL;
3771 return SSL_ERROR_SSL;
3774 if (SSL_want_read(s)) {
3775 bio = SSL_get_rbio(s);
3776 if (BIO_should_read(bio))
3777 return SSL_ERROR_WANT_READ;
3778 else if (BIO_should_write(bio))
3780 * This one doesn't make too much sense ... We never try to write
3781 * to the rbio, and an application program where rbio and wbio
3782 * are separate couldn't even know what it should wait for.
3783 * However if we ever set s->rwstate incorrectly (so that we have
3784 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3785 * wbio *are* the same, this test works around that bug; so it
3786 * might be safer to keep it.
3788 return SSL_ERROR_WANT_WRITE;
3789 else if (BIO_should_io_special(bio)) {
3790 reason = BIO_get_retry_reason(bio);
3791 if (reason == BIO_RR_CONNECT)
3792 return SSL_ERROR_WANT_CONNECT;
3793 else if (reason == BIO_RR_ACCEPT)
3794 return SSL_ERROR_WANT_ACCEPT;
3796 return SSL_ERROR_SYSCALL; /* unknown */
3800 if (SSL_want_write(s)) {
3801 /* Access wbio directly - in order to use the buffered bio if present */
3803 if (BIO_should_write(bio))
3804 return SSL_ERROR_WANT_WRITE;
3805 else if (BIO_should_read(bio))
3807 * See above (SSL_want_read(s) with BIO_should_write(bio))
3809 return SSL_ERROR_WANT_READ;
3810 else if (BIO_should_io_special(bio)) {
3811 reason = BIO_get_retry_reason(bio);
3812 if (reason == BIO_RR_CONNECT)
3813 return SSL_ERROR_WANT_CONNECT;
3814 else if (reason == BIO_RR_ACCEPT)
3815 return SSL_ERROR_WANT_ACCEPT;
3817 return SSL_ERROR_SYSCALL;
3820 if (SSL_want_x509_lookup(s))
3821 return SSL_ERROR_WANT_X509_LOOKUP;
3822 if (SSL_want_async(s))
3823 return SSL_ERROR_WANT_ASYNC;
3824 if (SSL_want_async_job(s))
3825 return SSL_ERROR_WANT_ASYNC_JOB;
3826 if (SSL_want_client_hello_cb(s))
3827 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3829 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3830 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3831 return SSL_ERROR_ZERO_RETURN;
3833 return SSL_ERROR_SYSCALL;
3836 static int ssl_do_handshake_intern(void *vargs)
3838 struct ssl_async_args *args;
3841 args = (struct ssl_async_args *)vargs;
3844 return s->handshake_func(s);
3847 int SSL_do_handshake(SSL *s)
3851 if (s->handshake_func == NULL) {
3852 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3856 ossl_statem_check_finish_init(s, -1);
3858 s->method->ssl_renegotiate_check(s, 0);
3860 if (SSL_in_init(s) || SSL_in_before(s)) {
3861 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3862 struct ssl_async_args args;
3866 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3868 ret = s->handshake_func(s);
3874 void SSL_set_accept_state(SSL *s)
3878 ossl_statem_clear(s);
3879 s->handshake_func = s->method->ssl_accept;
3883 void SSL_set_connect_state(SSL *s)
3887 ossl_statem_clear(s);
3888 s->handshake_func = s->method->ssl_connect;
3892 int ssl_undefined_function(SSL *s)
3894 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3898 int ssl_undefined_void_function(void)
3900 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3901 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3905 int ssl_undefined_const_function(const SSL *s)
3910 const SSL_METHOD *ssl_bad_method(int ver)
3912 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3916 const char *ssl_protocol_to_string(int version)
3920 case TLS1_3_VERSION:
3923 case TLS1_2_VERSION:
3926 case TLS1_1_VERSION:
3941 case DTLS1_2_VERSION:
3949 const char *SSL_get_version(const SSL *s)
3951 return ssl_protocol_to_string(s->version);
3954 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3956 STACK_OF(X509_NAME) *sk;
3965 if ((sk = sk_X509_NAME_new_null()) == NULL)
3967 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3968 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3970 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3973 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3975 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3984 SSL *SSL_dup(SSL *s)
3989 /* If we're not quiescent, just up_ref! */
3990 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3991 CRYPTO_UP_REF(&s->references, &i, s->lock);
3996 * Otherwise, copy configuration state, and session if set.
3998 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4001 if (s->session != NULL) {
4003 * Arranges to share the same session via up_ref. This "copies"
4004 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4006 if (!SSL_copy_session_id(ret, s))
4010 * No session has been established yet, so we have to expect that
4011 * s->cert or ret->cert will be changed later -- they should not both
4012 * point to the same object, and thus we can't use
4013 * SSL_copy_session_id.
4015 if (!SSL_set_ssl_method(ret, s->method))
4018 if (s->cert != NULL) {
4019 ssl_cert_free(ret->cert);
4020 ret->cert = ssl_cert_dup(s->cert);
4021 if (ret->cert == NULL)
4025 if (!SSL_set_session_id_context(ret, s->sid_ctx,
4026 (int)s->sid_ctx_length))
4030 if (!ssl_dane_dup(ret, s))
4032 ret->version = s->version;
4033 ret->options = s->options;
4034 ret->min_proto_version = s->min_proto_version;
4035 ret->max_proto_version = s->max_proto_version;
4036 ret->mode = s->mode;
4037 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4038 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4039 ret->msg_callback = s->msg_callback;
4040 ret->msg_callback_arg = s->msg_callback_arg;
4041 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4042 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4043 ret->generate_session_id = s->generate_session_id;
4045 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4047 /* copy app data, a little dangerous perhaps */
4048 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4051 ret->server = s->server;
4052 if (s->handshake_func) {
4054 SSL_set_accept_state(ret);
4056 SSL_set_connect_state(ret);
4058 ret->shutdown = s->shutdown;
4061 ret->default_passwd_callback = s->default_passwd_callback;
4062 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4064 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4066 /* dup the cipher_list and cipher_list_by_id stacks */
4067 if (s->cipher_list != NULL) {
4068 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4071 if (s->cipher_list_by_id != NULL)
4072 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4076 /* Dup the client_CA list */
4077 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4078 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4088 void ssl_clear_cipher_ctx(SSL *s)
4090 if (s->enc_read_ctx != NULL) {
4091 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4092 s->enc_read_ctx = NULL;
4094 if (s->enc_write_ctx != NULL) {
4095 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4096 s->enc_write_ctx = NULL;
4098 #ifndef OPENSSL_NO_COMP
4099 COMP_CTX_free(s->expand);
4101 COMP_CTX_free(s->compress);
4106 X509 *SSL_get_certificate(const SSL *s)
4108 if (s->cert != NULL)
4109 return s->cert->key->x509;
4114 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4116 if (s->cert != NULL)
4117 return s->cert->key->privatekey;
4122 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4124 if (ctx->cert != NULL)
4125 return ctx->cert->key->x509;
4130 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4132 if (ctx->cert != NULL)
4133 return ctx->cert->key->privatekey;
4138 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4140 if ((s->session != NULL) && (s->session->cipher != NULL))
4141 return s->session->cipher;
4145 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4147 return s->s3.tmp.new_cipher;
4150 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4152 #ifndef OPENSSL_NO_COMP
4153 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4159 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4161 #ifndef OPENSSL_NO_COMP
4162 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4168 int ssl_init_wbio_buffer(SSL *s)
4172 if (s->bbio != NULL) {
4173 /* Already buffered. */
4177 bbio = BIO_new(BIO_f_buffer());
4178 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4180 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4184 s->wbio = BIO_push(bbio, s->wbio);
4189 int ssl_free_wbio_buffer(SSL *s)
4191 /* callers ensure s is never null */
4192 if (s->bbio == NULL)
4195 s->wbio = BIO_pop(s->wbio);
4202 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4204 ctx->quiet_shutdown = mode;
4207 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4209 return ctx->quiet_shutdown;
4212 void SSL_set_quiet_shutdown(SSL *s, int mode)
4214 s->quiet_shutdown = mode;
4217 int SSL_get_quiet_shutdown(const SSL *s)
4219 return s->quiet_shutdown;
4222 void SSL_set_shutdown(SSL *s, int mode)
4227 int SSL_get_shutdown(const SSL *s)
4232 int SSL_version(const SSL *s)
4237 int SSL_client_version(const SSL *s)
4239 return s->client_version;
4242 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4247 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4250 if (ssl->ctx == ctx)
4253 ctx = ssl->session_ctx;
4254 new_cert = ssl_cert_dup(ctx->cert);
4255 if (new_cert == NULL) {
4259 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4260 ssl_cert_free(new_cert);
4264 ssl_cert_free(ssl->cert);
4265 ssl->cert = new_cert;
4268 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4269 * so setter APIs must prevent invalid lengths from entering the system.
4271 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4275 * If the session ID context matches that of the parent SSL_CTX,
4276 * inherit it from the new SSL_CTX as well. If however the context does
4277 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4278 * leave it unchanged.
4280 if ((ssl->ctx != NULL) &&
4281 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4282 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4283 ssl->sid_ctx_length = ctx->sid_ctx_length;
4284 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4287 SSL_CTX_up_ref(ctx);
4288 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4294 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4296 return X509_STORE_set_default_paths_with_libctx(ctx->cert_store,
4297 ctx->libctx, ctx->propq);
4300 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4302 X509_LOOKUP *lookup;
4304 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4308 /* We ignore errors, in case the directory doesn't exist */
4311 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4318 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4320 X509_LOOKUP *lookup;
4322 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4326 /* We ignore errors, in case the directory doesn't exist */
4329 X509_LOOKUP_load_file_with_libctx(lookup, NULL, X509_FILETYPE_DEFAULT,
4330 ctx->libctx, ctx->propq);
4337 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4339 X509_LOOKUP *lookup;
4341 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4345 /* We ignore errors, in case the directory doesn't exist */
4348 X509_LOOKUP_add_store_with_libctx(lookup, NULL, ctx->libctx, ctx->propq);
4355 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4357 return X509_STORE_load_file_with_libctx(ctx->cert_store, CAfile,
4358 ctx->libctx, ctx->propq);
4361 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4363 return X509_STORE_load_path(ctx->cert_store, CApath);
4366 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4368 return X509_STORE_load_store_with_libctx(ctx->cert_store, CAstore,
4369 ctx->libctx, ctx->propq);
4372 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4375 if (CAfile == NULL && CApath == NULL)
4377 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4379 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4384 void SSL_set_info_callback(SSL *ssl,
4385 void (*cb) (const SSL *ssl, int type, int val))
4387 ssl->info_callback = cb;
4391 * One compiler (Diab DCC) doesn't like argument names in returned function
4394 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4397 return ssl->info_callback;
4400 void SSL_set_verify_result(SSL *ssl, long arg)
4402 ssl->verify_result = arg;
4405 long SSL_get_verify_result(const SSL *ssl)
4407 return ssl->verify_result;
4410 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4413 return sizeof(ssl->s3.client_random);
4414 if (outlen > sizeof(ssl->s3.client_random))
4415 outlen = sizeof(ssl->s3.client_random);
4416 memcpy(out, ssl->s3.client_random, outlen);
4420 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4423 return sizeof(ssl->s3.server_random);
4424 if (outlen > sizeof(ssl->s3.server_random))
4425 outlen = sizeof(ssl->s3.server_random);
4426 memcpy(out, ssl->s3.server_random, outlen);
4430 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4431 unsigned char *out, size_t outlen)
4434 return session->master_key_length;
4435 if (outlen > session->master_key_length)
4436 outlen = session->master_key_length;
4437 memcpy(out, session->master_key, outlen);
4441 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4444 if (len > sizeof(sess->master_key))
4447 memcpy(sess->master_key, in, len);
4448 sess->master_key_length = len;
4453 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4455 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4458 void *SSL_get_ex_data(const SSL *s, int idx)
4460 return CRYPTO_get_ex_data(&s->ex_data, idx);
4463 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4465 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4468 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4470 return CRYPTO_get_ex_data(&s->ex_data, idx);
4473 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4475 return ctx->cert_store;
4478 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4480 X509_STORE_free(ctx->cert_store);
4481 ctx->cert_store = store;
4484 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4487 X509_STORE_up_ref(store);
4488 SSL_CTX_set_cert_store(ctx, store);
4491 int SSL_want(const SSL *s)
4497 * \brief Set the callback for generating temporary DH keys.
4498 * \param ctx the SSL context.
4499 * \param dh the callback
4502 #ifndef OPENSSL_NO_DH
4503 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4504 DH *(*dh) (SSL *ssl, int is_export,
4507 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4510 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4513 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4517 #ifndef OPENSSL_NO_PSK
4518 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4520 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4521 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4524 OPENSSL_free(ctx->cert->psk_identity_hint);
4525 if (identity_hint != NULL) {
4526 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4527 if (ctx->cert->psk_identity_hint == NULL)
4530 ctx->cert->psk_identity_hint = NULL;
4534 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4539 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4540 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4543 OPENSSL_free(s->cert->psk_identity_hint);
4544 if (identity_hint != NULL) {
4545 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4546 if (s->cert->psk_identity_hint == NULL)
4549 s->cert->psk_identity_hint = NULL;
4553 const char *SSL_get_psk_identity_hint(const SSL *s)
4555 if (s == NULL || s->session == NULL)
4557 return s->session->psk_identity_hint;
4560 const char *SSL_get_psk_identity(const SSL *s)
4562 if (s == NULL || s->session == NULL)
4564 return s->session->psk_identity;
4567 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4569 s->psk_client_callback = cb;
4572 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4574 ctx->psk_client_callback = cb;
4577 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4579 s->psk_server_callback = cb;
4582 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4584 ctx->psk_server_callback = cb;
4588 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4590 s->psk_find_session_cb = cb;
4593 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4594 SSL_psk_find_session_cb_func cb)
4596 ctx->psk_find_session_cb = cb;
4599 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4601 s->psk_use_session_cb = cb;
4604 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4605 SSL_psk_use_session_cb_func cb)
4607 ctx->psk_use_session_cb = cb;
4610 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4611 void (*cb) (int write_p, int version,
4612 int content_type, const void *buf,
4613 size_t len, SSL *ssl, void *arg))
4615 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4618 void SSL_set_msg_callback(SSL *ssl,
4619 void (*cb) (int write_p, int version,
4620 int content_type, const void *buf,
4621 size_t len, SSL *ssl, void *arg))
4623 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4626 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4627 int (*cb) (SSL *ssl,
4631 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4632 (void (*)(void))cb);
4635 void SSL_set_not_resumable_session_callback(SSL *ssl,
4636 int (*cb) (SSL *ssl,
4637 int is_forward_secure))
4639 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4640 (void (*)(void))cb);
4643 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4644 size_t (*cb) (SSL *ssl, int type,
4645 size_t len, void *arg))
4647 ctx->record_padding_cb = cb;
4650 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4652 ctx->record_padding_arg = arg;
4655 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4657 return ctx->record_padding_arg;
4660 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4662 /* block size of 0 or 1 is basically no padding */
4663 if (block_size == 1)
4664 ctx->block_padding = 0;
4665 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4666 ctx->block_padding = block_size;
4672 int SSL_set_record_padding_callback(SSL *ssl,
4673 size_t (*cb) (SSL *ssl, int type,
4674 size_t len, void *arg))
4678 b = SSL_get_wbio(ssl);
4679 if (b == NULL || !BIO_get_ktls_send(b)) {
4680 ssl->record_padding_cb = cb;
4686 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4688 ssl->record_padding_arg = arg;
4691 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4693 return ssl->record_padding_arg;
4696 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4698 /* block size of 0 or 1 is basically no padding */
4699 if (block_size == 1)
4700 ssl->block_padding = 0;
4701 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4702 ssl->block_padding = block_size;
4708 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4710 s->num_tickets = num_tickets;
4715 size_t SSL_get_num_tickets(const SSL *s)
4717 return s->num_tickets;
4720 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4722 ctx->num_tickets = num_tickets;
4727 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4729 return ctx->num_tickets;
4733 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4734 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4735 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4736 * Returns the newly allocated ctx;
4739 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4741 ssl_clear_hash_ctx(hash);
4742 *hash = EVP_MD_CTX_new();
4743 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4744 EVP_MD_CTX_free(*hash);
4751 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4754 EVP_MD_CTX_free(*hash);
4758 /* Retrieve handshake hashes */
4759 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4762 EVP_MD_CTX *ctx = NULL;
4763 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4764 int hashleni = EVP_MD_CTX_size(hdgst);
4767 if (hashleni < 0 || (size_t)hashleni > outlen) {
4768 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4769 ERR_R_INTERNAL_ERROR);
4773 ctx = EVP_MD_CTX_new();
4777 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4778 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4779 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4780 ERR_R_INTERNAL_ERROR);
4784 *hashlen = hashleni;
4788 EVP_MD_CTX_free(ctx);
4792 int SSL_session_reused(const SSL *s)
4797 int SSL_is_server(const SSL *s)
4802 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4803 void SSL_set_debug(SSL *s, int debug)
4805 /* Old function was do-nothing anyway... */
4811 void SSL_set_security_level(SSL *s, int level)
4813 s->cert->sec_level = level;
4816 int SSL_get_security_level(const SSL *s)
4818 return s->cert->sec_level;
4821 void SSL_set_security_callback(SSL *s,
4822 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4823 int op, int bits, int nid,
4824 void *other, void *ex))
4826 s->cert->sec_cb = cb;
4829 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4830 const SSL_CTX *ctx, int op,
4831 int bits, int nid, void *other,
4833 return s->cert->sec_cb;
4836 void SSL_set0_security_ex_data(SSL *s, void *ex)
4838 s->cert->sec_ex = ex;
4841 void *SSL_get0_security_ex_data(const SSL *s)
4843 return s->cert->sec_ex;
4846 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4848 ctx->cert->sec_level = level;
4851 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4853 return ctx->cert->sec_level;
4856 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4857 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4858 int op, int bits, int nid,
4859 void *other, void *ex))
4861 ctx->cert->sec_cb = cb;
4864 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4870 return ctx->cert->sec_cb;
4873 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4875 ctx->cert->sec_ex = ex;
4878 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4880 return ctx->cert->sec_ex;
4884 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4885 * can return unsigned long, instead of the generic long return value from the
4886 * control interface.
4888 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4890 return ctx->options;
4893 unsigned long SSL_get_options(const SSL *s)
4898 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4900 return ctx->options |= op;
4903 unsigned long SSL_set_options(SSL *s, unsigned long op)
4905 return s->options |= op;
4908 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4910 return ctx->options &= ~op;
4913 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4915 return s->options &= ~op;
4918 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4920 return s->verified_chain;
4923 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4925 #ifndef OPENSSL_NO_CT
4928 * Moves SCTs from the |src| stack to the |dst| stack.
4929 * The source of each SCT will be set to |origin|.
4930 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4932 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4934 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4935 sct_source_t origin)
4941 *dst = sk_SCT_new_null();
4943 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4948 while ((sct = sk_SCT_pop(src)) != NULL) {
4949 if (SCT_set_source(sct, origin) != 1)
4952 if (sk_SCT_push(*dst, sct) <= 0)
4960 sk_SCT_push(src, sct); /* Put the SCT back */
4965 * Look for data collected during ServerHello and parse if found.
4966 * Returns the number of SCTs extracted.
4968 static int ct_extract_tls_extension_scts(SSL *s)
4970 int scts_extracted = 0;
4972 if (s->ext.scts != NULL) {
4973 const unsigned char *p = s->ext.scts;
4974 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4976 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4978 SCT_LIST_free(scts);
4981 return scts_extracted;
4985 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4986 * contains an SCT X509 extension. They will be stored in |s->scts|.
4988 * - The number of SCTs extracted, assuming an OCSP response exists.
4989 * - 0 if no OCSP response exists or it contains no SCTs.
4990 * - A negative integer if an error occurs.
4992 static int ct_extract_ocsp_response_scts(SSL *s)
4994 # ifndef OPENSSL_NO_OCSP
4995 int scts_extracted = 0;
4996 const unsigned char *p;
4997 OCSP_BASICRESP *br = NULL;
4998 OCSP_RESPONSE *rsp = NULL;
4999 STACK_OF(SCT) *scts = NULL;
5002 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5005 p = s->ext.ocsp.resp;
5006 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5010 br = OCSP_response_get1_basic(rsp);
5014 for (i = 0; i < OCSP_resp_count(br); ++i) {
5015 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5021 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5023 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5024 if (scts_extracted < 0)
5028 SCT_LIST_free(scts);
5029 OCSP_BASICRESP_free(br);
5030 OCSP_RESPONSE_free(rsp);
5031 return scts_extracted;
5033 /* Behave as if no OCSP response exists */
5039 * Attempts to extract SCTs from the peer certificate.
5040 * Return the number of SCTs extracted, or a negative integer if an error
5043 static int ct_extract_x509v3_extension_scts(SSL *s)
5045 int scts_extracted = 0;
5046 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5049 STACK_OF(SCT) *scts =
5050 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5053 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5055 SCT_LIST_free(scts);
5058 return scts_extracted;
5062 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5063 * response (if it exists) and X509v3 extensions in the certificate.
5064 * Returns NULL if an error occurs.
5066 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5068 if (!s->scts_parsed) {
5069 if (ct_extract_tls_extension_scts(s) < 0 ||
5070 ct_extract_ocsp_response_scts(s) < 0 ||
5071 ct_extract_x509v3_extension_scts(s) < 0)
5081 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5082 const STACK_OF(SCT) *scts, void *unused_arg)
5087 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5088 const STACK_OF(SCT) *scts, void *unused_arg)
5090 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5093 for (i = 0; i < count; ++i) {
5094 SCT *sct = sk_SCT_value(scts, i);
5095 int status = SCT_get_validation_status(sct);
5097 if (status == SCT_VALIDATION_STATUS_VALID)
5100 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5104 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5108 * Since code exists that uses the custom extension handler for CT, look
5109 * for this and throw an error if they have already registered to use CT.
5111 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5112 TLSEXT_TYPE_signed_certificate_timestamp))
5114 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5115 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5119 if (callback != NULL) {
5121 * If we are validating CT, then we MUST accept SCTs served via OCSP
5123 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5127 s->ct_validation_callback = callback;
5128 s->ct_validation_callback_arg = arg;
5133 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5134 ssl_ct_validation_cb callback, void *arg)
5137 * Since code exists that uses the custom extension handler for CT, look for
5138 * this and throw an error if they have already registered to use CT.
5140 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5141 TLSEXT_TYPE_signed_certificate_timestamp))
5143 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5144 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5148 ctx->ct_validation_callback = callback;
5149 ctx->ct_validation_callback_arg = arg;
5153 int SSL_ct_is_enabled(const SSL *s)
5155 return s->ct_validation_callback != NULL;
5158 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5160 return ctx->ct_validation_callback != NULL;
5163 int ssl_validate_ct(SSL *s)
5166 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5168 SSL_DANE *dane = &s->dane;
5169 CT_POLICY_EVAL_CTX *ctx = NULL;
5170 const STACK_OF(SCT) *scts;
5173 * If no callback is set, the peer is anonymous, or its chain is invalid,
5174 * skip SCT validation - just return success. Applications that continue
5175 * handshakes without certificates, with unverified chains, or pinned leaf
5176 * certificates are outside the scope of the WebPKI and CT.
5178 * The above exclusions notwithstanding the vast majority of peers will
5179 * have rather ordinary certificate chains validated by typical
5180 * applications that perform certificate verification and therefore will
5181 * process SCTs when enabled.
5183 if (s->ct_validation_callback == NULL || cert == NULL ||
5184 s->verify_result != X509_V_OK ||
5185 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5189 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5190 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5192 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5193 switch (dane->mtlsa->usage) {
5194 case DANETLS_USAGE_DANE_TA:
5195 case DANETLS_USAGE_DANE_EE:
5200 ctx = CT_POLICY_EVAL_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
5202 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5203 ERR_R_MALLOC_FAILURE);
5207 issuer = sk_X509_value(s->verified_chain, 1);
5208 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5209 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5210 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5211 CT_POLICY_EVAL_CTX_set_time(
5212 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5214 scts = SSL_get0_peer_scts(s);
5217 * This function returns success (> 0) only when all the SCTs are valid, 0
5218 * when some are invalid, and < 0 on various internal errors (out of
5219 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5220 * reason to abort the handshake, that decision is up to the callback.
5221 * Therefore, we error out only in the unexpected case that the return
5222 * value is negative.
5224 * XXX: One might well argue that the return value of this function is an
5225 * unfortunate design choice. Its job is only to determine the validation
5226 * status of each of the provided SCTs. So long as it correctly separates
5227 * the wheat from the chaff it should return success. Failure in this case
5228 * ought to correspond to an inability to carry out its duties.
5230 if (SCT_LIST_validate(scts, ctx) < 0) {
5231 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5232 SSL_R_SCT_VERIFICATION_FAILED);
5236 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5238 ret = 0; /* This function returns 0 on failure */
5240 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5241 SSL_R_CALLBACK_FAILED);
5244 CT_POLICY_EVAL_CTX_free(ctx);
5246 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5247 * failure return code here. Also the application may wish the complete
5248 * the handshake, and then disconnect cleanly at a higher layer, after
5249 * checking the verification status of the completed connection.
5251 * We therefore force a certificate verification failure which will be
5252 * visible via SSL_get_verify_result() and cached as part of any resumed
5255 * Note: the permissive callback is for information gathering only, always
5256 * returns success, and does not affect verification status. Only the
5257 * strict callback or a custom application-specified callback can trigger
5258 * connection failure or record a verification error.
5261 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5265 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5267 switch (validation_mode) {
5269 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5271 case SSL_CT_VALIDATION_PERMISSIVE:
5272 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5273 case SSL_CT_VALIDATION_STRICT:
5274 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5278 int SSL_enable_ct(SSL *s, int validation_mode)
5280 switch (validation_mode) {
5282 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5284 case SSL_CT_VALIDATION_PERMISSIVE:
5285 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5286 case SSL_CT_VALIDATION_STRICT:
5287 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5291 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5293 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5296 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5298 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5301 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5303 CTLOG_STORE_free(ctx->ctlog_store);
5304 ctx->ctlog_store = logs;
5307 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5309 return ctx->ctlog_store;
5312 #endif /* OPENSSL_NO_CT */
5314 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5317 c->client_hello_cb = cb;
5318 c->client_hello_cb_arg = arg;
5321 int SSL_client_hello_isv2(SSL *s)
5323 if (s->clienthello == NULL)
5325 return s->clienthello->isv2;
5328 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5330 if (s->clienthello == NULL)
5332 return s->clienthello->legacy_version;
5335 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5337 if (s->clienthello == NULL)
5340 *out = s->clienthello->random;
5341 return SSL3_RANDOM_SIZE;
5344 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5346 if (s->clienthello == NULL)
5349 *out = s->clienthello->session_id;
5350 return s->clienthello->session_id_len;
5353 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5355 if (s->clienthello == NULL)
5358 *out = PACKET_data(&s->clienthello->ciphersuites);
5359 return PACKET_remaining(&s->clienthello->ciphersuites);
5362 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5364 if (s->clienthello == NULL)
5367 *out = s->clienthello->compressions;
5368 return s->clienthello->compressions_len;
5371 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5377 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5379 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5380 ext = s->clienthello->pre_proc_exts + i;
5389 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5390 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5391 ERR_R_MALLOC_FAILURE);
5394 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5395 ext = s->clienthello->pre_proc_exts + i;
5397 if (ext->received_order >= num)
5399 present[ext->received_order] = ext->type;
5406 OPENSSL_free(present);
5410 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5416 if (s->clienthello == NULL)
5418 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5419 r = s->clienthello->pre_proc_exts + i;
5420 if (r->present && r->type == type) {
5422 *out = PACKET_data(&r->data);
5424 *outlen = PACKET_remaining(&r->data);
5431 int SSL_free_buffers(SSL *ssl)
5433 RECORD_LAYER *rl = &ssl->rlayer;
5435 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5438 RECORD_LAYER_release(rl);
5442 int SSL_alloc_buffers(SSL *ssl)
5444 return ssl3_setup_buffers(ssl);
5447 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5449 ctx->keylog_callback = cb;
5452 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5454 return ctx->keylog_callback;
5457 static int nss_keylog_int(const char *prefix,
5459 const uint8_t *parameter_1,
5460 size_t parameter_1_len,
5461 const uint8_t *parameter_2,
5462 size_t parameter_2_len)
5465 char *cursor = NULL;
5470 if (ssl->ctx->keylog_callback == NULL)
5474 * Our output buffer will contain the following strings, rendered with
5475 * space characters in between, terminated by a NULL character: first the
5476 * prefix, then the first parameter, then the second parameter. The
5477 * meaning of each parameter depends on the specific key material being
5478 * logged. Note that the first and second parameters are encoded in
5479 * hexadecimal, so we need a buffer that is twice their lengths.
5481 prefix_len = strlen(prefix);
5482 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5483 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5484 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5485 ERR_R_MALLOC_FAILURE);
5489 strcpy(cursor, prefix);
5490 cursor += prefix_len;
5493 for (i = 0; i < parameter_1_len; i++) {
5494 sprintf(cursor, "%02x", parameter_1[i]);
5499 for (i = 0; i < parameter_2_len; i++) {
5500 sprintf(cursor, "%02x", parameter_2[i]);
5505 ssl->ctx->keylog_callback(ssl, (const char *)out);
5506 OPENSSL_clear_free(out, out_len);
5511 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5512 const uint8_t *encrypted_premaster,
5513 size_t encrypted_premaster_len,
5514 const uint8_t *premaster,
5515 size_t premaster_len)
5517 if (encrypted_premaster_len < 8) {
5518 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5519 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5523 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5524 return nss_keylog_int("RSA",
5526 encrypted_premaster,
5532 int ssl_log_secret(SSL *ssl,
5534 const uint8_t *secret,
5537 return nss_keylog_int(label,
5539 ssl->s3.client_random,
5545 #define SSLV2_CIPHER_LEN 3
5547 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5551 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5553 if (PACKET_remaining(cipher_suites) == 0) {
5554 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5555 SSL_R_NO_CIPHERS_SPECIFIED);
5559 if (PACKET_remaining(cipher_suites) % n != 0) {
5560 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5561 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5565 OPENSSL_free(s->s3.tmp.ciphers_raw);
5566 s->s3.tmp.ciphers_raw = NULL;
5567 s->s3.tmp.ciphers_rawlen = 0;
5570 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5571 PACKET sslv2ciphers = *cipher_suites;
5572 unsigned int leadbyte;
5576 * We store the raw ciphers list in SSLv3+ format so we need to do some
5577 * preprocessing to convert the list first. If there are any SSLv2 only
5578 * ciphersuites with a non-zero leading byte then we are going to
5579 * slightly over allocate because we won't store those. But that isn't a
5582 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5583 s->s3.tmp.ciphers_raw = raw;
5585 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5586 ERR_R_MALLOC_FAILURE);
5589 for (s->s3.tmp.ciphers_rawlen = 0;
5590 PACKET_remaining(&sslv2ciphers) > 0;
5591 raw += TLS_CIPHER_LEN) {
5592 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5594 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5597 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5598 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5600 OPENSSL_free(s->s3.tmp.ciphers_raw);
5601 s->s3.tmp.ciphers_raw = NULL;
5602 s->s3.tmp.ciphers_rawlen = 0;
5606 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5608 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5609 &s->s3.tmp.ciphers_rawlen)) {
5610 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5611 ERR_R_INTERNAL_ERROR);
5617 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5618 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5619 STACK_OF(SSL_CIPHER) **scsvs)
5623 if (!PACKET_buf_init(&pkt, bytes, len))
5625 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5628 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5629 STACK_OF(SSL_CIPHER) **skp,
5630 STACK_OF(SSL_CIPHER) **scsvs_out,
5631 int sslv2format, int fatal)
5633 const SSL_CIPHER *c;
5634 STACK_OF(SSL_CIPHER) *sk = NULL;
5635 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5637 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5638 unsigned char cipher[SSLV2_CIPHER_LEN];
5640 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5642 if (PACKET_remaining(cipher_suites) == 0) {
5644 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5645 SSL_R_NO_CIPHERS_SPECIFIED);
5647 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5651 if (PACKET_remaining(cipher_suites) % n != 0) {
5653 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5654 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5656 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5657 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5661 sk = sk_SSL_CIPHER_new_null();
5662 scsvs = sk_SSL_CIPHER_new_null();
5663 if (sk == NULL || scsvs == NULL) {
5665 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5666 ERR_R_MALLOC_FAILURE);
5668 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5672 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5674 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5675 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5676 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5678 if (sslv2format && cipher[0] != '\0')
5681 /* For SSLv2-compat, ignore leading 0-byte. */
5682 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5684 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5685 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5687 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5688 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5690 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5695 if (PACKET_remaining(cipher_suites) > 0) {
5697 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5700 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5707 sk_SSL_CIPHER_free(sk);
5708 if (scsvs_out != NULL)
5711 sk_SSL_CIPHER_free(scsvs);
5714 sk_SSL_CIPHER_free(sk);
5715 sk_SSL_CIPHER_free(scsvs);
5719 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5721 ctx->max_early_data = max_early_data;
5726 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5728 return ctx->max_early_data;
5731 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5733 s->max_early_data = max_early_data;
5738 uint32_t SSL_get_max_early_data(const SSL *s)
5740 return s->max_early_data;
5743 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5745 ctx->recv_max_early_data = recv_max_early_data;
5750 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5752 return ctx->recv_max_early_data;
5755 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5757 s->recv_max_early_data = recv_max_early_data;
5762 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5764 return s->recv_max_early_data;
5767 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5769 /* Return any active Max Fragment Len extension */
5770 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5771 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5773 /* return current SSL connection setting */
5774 return ssl->max_send_fragment;
5777 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5779 /* Return a value regarding an active Max Fragment Len extension */
5780 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5781 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5782 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5784 /* else limit |split_send_fragment| to current |max_send_fragment| */
5785 if (ssl->split_send_fragment > ssl->max_send_fragment)
5786 return ssl->max_send_fragment;
5788 /* return current SSL connection setting */
5789 return ssl->split_send_fragment;
5792 int SSL_stateless(SSL *s)
5796 /* Ensure there is no state left over from a previous invocation */
5802 s->s3.flags |= TLS1_FLAGS_STATELESS;
5803 ret = SSL_accept(s);
5804 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5806 if (ret > 0 && s->ext.cookieok)
5809 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5815 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5817 ctx->pha_enabled = val;
5820 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5822 ssl->pha_enabled = val;
5825 int SSL_verify_client_post_handshake(SSL *ssl)
5827 if (!SSL_IS_TLS13(ssl)) {
5828 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5832 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5836 if (!SSL_is_init_finished(ssl)) {
5837 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5841 switch (ssl->post_handshake_auth) {
5843 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5846 case SSL_PHA_EXT_SENT:
5847 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5849 case SSL_PHA_EXT_RECEIVED:
5851 case SSL_PHA_REQUEST_PENDING:
5852 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5854 case SSL_PHA_REQUESTED:
5855 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5859 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5861 /* checks verify_mode and algorithm_auth */
5862 if (!send_certificate_request(ssl)) {
5863 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5864 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5868 ossl_statem_set_in_init(ssl, 1);
5872 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5873 SSL_CTX_generate_session_ticket_fn gen_cb,
5874 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5877 ctx->generate_ticket_cb = gen_cb;
5878 ctx->decrypt_ticket_cb = dec_cb;
5879 ctx->ticket_cb_data = arg;
5883 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5884 SSL_allow_early_data_cb_fn cb,
5887 ctx->allow_early_data_cb = cb;
5888 ctx->allow_early_data_cb_data = arg;
5891 void SSL_set_allow_early_data_cb(SSL *s,
5892 SSL_allow_early_data_cb_fn cb,
5895 s->allow_early_data_cb = cb;
5896 s->allow_early_data_cb_data = arg;
5899 const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5901 const char *properties)
5905 #ifndef OPENSSL_NO_ENGINE
5909 * If there is an Engine available for this cipher we use the "implicit"
5910 * form to ensure we use that engine later.
5912 eng = ENGINE_get_cipher_engine(nid);
5915 return EVP_get_cipherbynid(nid);
5919 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5921 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5927 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5929 /* Don't up-ref an implicit EVP_CIPHER */
5930 if (EVP_CIPHER_provider(cipher) == NULL)
5934 * The cipher was explicitly fetched and therefore it is safe to cast
5937 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5940 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5945 if (EVP_CIPHER_provider(cipher) != NULL) {
5947 * The cipher was explicitly fetched and therefore it is safe to cast
5950 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5954 const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5956 const char *properties)
5960 #ifndef OPENSSL_NO_ENGINE
5964 * If there is an Engine available for this digest we use the "implicit"
5965 * form to ensure we use that engine later.
5967 eng = ENGINE_get_digest_engine(nid);
5970 return EVP_get_digestbynid(nid);
5974 /* Otherwise we do an explicit fetch */
5976 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5981 int ssl_evp_md_up_ref(const EVP_MD *md)
5983 /* Don't up-ref an implicit EVP_MD */
5984 if (EVP_MD_provider(md) == NULL)
5988 * The digest was explicitly fetched and therefore it is safe to cast
5991 return EVP_MD_up_ref((EVP_MD *)md);
5994 void ssl_evp_md_free(const EVP_MD *md)
5999 if (EVP_MD_provider(md) != NULL) {
6001 * The digest was explicitly fetched and therefore it is safe to cast
6004 EVP_MD_free((EVP_MD *)md);