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/rand_drbg.h>
22 #include <openssl/ocsp.h>
23 #include <openssl/dh.h>
24 #include <openssl/engine.h>
25 #include <openssl/async.h>
26 #include <openssl/ct.h>
27 #include <openssl/trace.h>
28 #include "internal/cryptlib.h"
29 #include "internal/refcount.h"
30 #include "internal/ktls.h"
33 DEFINE_STACK_OF(X509_NAME)
34 DEFINE_STACK_OF_CONST(SSL_CIPHER)
35 DEFINE_STACK_OF(X509_EXTENSION)
36 DEFINE_STACK_OF(OCSP_RESPID)
37 DEFINE_STACK_OF(SRTP_PROTECTION_PROFILE)
40 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t,
41 SSL_MAC_BUF *mac, size_t macsize)
43 return ssl_undefined_function(ssl);
46 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
49 return ssl_undefined_function(ssl);
52 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
53 unsigned char *s, size_t t, size_t *u)
55 return ssl_undefined_function(ssl);
58 static int ssl_undefined_function_4(SSL *ssl, int r)
60 return ssl_undefined_function(ssl);
63 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
66 return ssl_undefined_function(ssl);
69 static int ssl_undefined_function_6(int r)
71 return ssl_undefined_function(NULL);
74 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
75 const char *t, size_t u,
76 const unsigned char *v, size_t w, int x)
78 return ssl_undefined_function(ssl);
81 SSL3_ENC_METHOD ssl3_undef_enc_method = {
82 ssl_undefined_function_1,
83 ssl_undefined_function_2,
84 ssl_undefined_function,
85 ssl_undefined_function_3,
86 ssl_undefined_function_4,
87 ssl_undefined_function_5,
88 NULL, /* client_finished_label */
89 0, /* client_finished_label_len */
90 NULL, /* server_finished_label */
91 0, /* server_finished_label_len */
92 ssl_undefined_function_6,
93 ssl_undefined_function_7,
96 struct ssl_async_args {
100 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
102 int (*func_read) (SSL *, void *, size_t, size_t *);
103 int (*func_write) (SSL *, const void *, size_t, size_t *);
104 int (*func_other) (SSL *);
108 static const struct {
114 DANETLS_MATCHING_FULL, 0, NID_undef
117 DANETLS_MATCHING_2256, 1, NID_sha256
120 DANETLS_MATCHING_2512, 2, NID_sha512
124 static int dane_ctx_enable(struct dane_ctx_st *dctx)
126 const EVP_MD **mdevp;
128 uint8_t mdmax = DANETLS_MATCHING_LAST;
129 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
132 if (dctx->mdevp != NULL)
135 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
136 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
138 if (mdord == NULL || mdevp == NULL) {
141 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
145 /* Install default entries */
146 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
149 if (dane_mds[i].nid == NID_undef ||
150 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
152 mdevp[dane_mds[i].mtype] = md;
153 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
163 static void dane_ctx_final(struct dane_ctx_st *dctx)
165 OPENSSL_free(dctx->mdevp);
168 OPENSSL_free(dctx->mdord);
173 static void tlsa_free(danetls_record *t)
177 OPENSSL_free(t->data);
178 EVP_PKEY_free(t->spki);
182 static void dane_final(SSL_DANE *dane)
184 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
187 sk_X509_pop_free(dane->certs, X509_free);
190 X509_free(dane->mcert);
198 * dane_copy - Copy dane configuration, sans verification state.
200 static int ssl_dane_dup(SSL *to, SSL *from)
205 if (!DANETLS_ENABLED(&from->dane))
208 num = sk_danetls_record_num(from->dane.trecs);
209 dane_final(&to->dane);
210 to->dane.flags = from->dane.flags;
211 to->dane.dctx = &to->ctx->dane;
212 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
214 if (to->dane.trecs == NULL) {
215 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
219 for (i = 0; i < num; ++i) {
220 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
222 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
223 t->data, t->dlen) <= 0)
229 static int dane_mtype_set(struct dane_ctx_st *dctx,
230 const EVP_MD *md, uint8_t mtype, uint8_t ord)
234 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
235 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
239 if (mtype > dctx->mdmax) {
240 const EVP_MD **mdevp;
242 int n = ((int)mtype) + 1;
244 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
246 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
251 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
253 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
258 /* Zero-fill any gaps */
259 for (i = dctx->mdmax + 1; i < mtype; ++i) {
267 dctx->mdevp[mtype] = md;
268 /* Coerce ordinal of disabled matching types to 0 */
269 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
274 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
276 if (mtype > dane->dctx->mdmax)
278 return dane->dctx->mdevp[mtype];
281 static int dane_tlsa_add(SSL_DANE *dane,
284 uint8_t mtype, unsigned const char *data, size_t dlen)
287 const EVP_MD *md = NULL;
288 int ilen = (int)dlen;
292 if (dane->trecs == NULL) {
293 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
297 if (ilen < 0 || dlen != (size_t)ilen) {
298 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
302 if (usage > DANETLS_USAGE_LAST) {
303 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
307 if (selector > DANETLS_SELECTOR_LAST) {
308 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
312 if (mtype != DANETLS_MATCHING_FULL) {
313 md = tlsa_md_get(dane, mtype);
315 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
320 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
321 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
325 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
329 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
330 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
335 t->selector = selector;
337 t->data = OPENSSL_malloc(dlen);
338 if (t->data == NULL) {
340 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
343 memcpy(t->data, data, dlen);
346 /* Validate and cache full certificate or public key */
347 if (mtype == DANETLS_MATCHING_FULL) {
348 const unsigned char *p = data;
350 EVP_PKEY *pkey = NULL;
353 case DANETLS_SELECTOR_CERT:
354 if (!d2i_X509(&cert, &p, ilen) || p < data ||
355 dlen != (size_t)(p - data)) {
357 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
360 if (X509_get0_pubkey(cert) == NULL) {
362 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
366 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
372 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
373 * records that contain full certificates of trust-anchors that are
374 * not present in the wire chain. For usage PKIX-TA(0), we augment
375 * the chain with untrusted Full(0) certificates from DNS, in case
376 * they are missing from the chain.
378 if ((dane->certs == NULL &&
379 (dane->certs = sk_X509_new_null()) == NULL) ||
380 !sk_X509_push(dane->certs, cert)) {
381 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
388 case DANETLS_SELECTOR_SPKI:
389 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
390 dlen != (size_t)(p - data)) {
392 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
397 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
398 * records that contain full bare keys of trust-anchors that are
399 * not present in the wire chain.
401 if (usage == DANETLS_USAGE_DANE_TA)
410 * Find the right insertion point for the new record.
412 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
413 * they can be processed first, as they require no chain building, and no
414 * expiration or hostname checks. Because DANE-EE(3) is numerically
415 * largest, this is accomplished via descending sort by "usage".
417 * We also sort in descending order by matching ordinal to simplify
418 * the implementation of digest agility in the verification code.
420 * The choice of order for the selector is not significant, so we
421 * use the same descending order for consistency.
423 num = sk_danetls_record_num(dane->trecs);
424 for (i = 0; i < num; ++i) {
425 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
427 if (rec->usage > usage)
429 if (rec->usage < usage)
431 if (rec->selector > selector)
433 if (rec->selector < selector)
435 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
440 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
442 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
445 dane->umask |= DANETLS_USAGE_BIT(usage);
451 * Return 0 if there is only one version configured and it was disabled
452 * at configure time. Return 1 otherwise.
454 static int ssl_check_allowed_versions(int min_version, int max_version)
456 int minisdtls = 0, maxisdtls = 0;
458 /* Figure out if we're doing DTLS versions or TLS versions */
459 if (min_version == DTLS1_BAD_VER
460 || min_version >> 8 == DTLS1_VERSION_MAJOR)
462 if (max_version == DTLS1_BAD_VER
463 || max_version >> 8 == DTLS1_VERSION_MAJOR)
465 /* A wildcard version of 0 could be DTLS or TLS. */
466 if ((minisdtls && !maxisdtls && max_version != 0)
467 || (maxisdtls && !minisdtls && min_version != 0)) {
468 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
472 if (minisdtls || maxisdtls) {
473 /* Do DTLS version checks. */
474 if (min_version == 0)
475 /* Ignore DTLS1_BAD_VER */
476 min_version = DTLS1_VERSION;
477 if (max_version == 0)
478 max_version = DTLS1_2_VERSION;
479 #ifdef OPENSSL_NO_DTLS1_2
480 if (max_version == DTLS1_2_VERSION)
481 max_version = DTLS1_VERSION;
483 #ifdef OPENSSL_NO_DTLS1
484 if (min_version == DTLS1_VERSION)
485 min_version = DTLS1_2_VERSION;
487 /* Done massaging versions; do the check. */
489 #ifdef OPENSSL_NO_DTLS1
490 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
491 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
493 #ifdef OPENSSL_NO_DTLS1_2
494 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
495 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
500 /* Regular TLS version checks. */
501 if (min_version == 0)
502 min_version = SSL3_VERSION;
503 if (max_version == 0)
504 max_version = TLS1_3_VERSION;
505 #ifdef OPENSSL_NO_TLS1_3
506 if (max_version == TLS1_3_VERSION)
507 max_version = TLS1_2_VERSION;
509 #ifdef OPENSSL_NO_TLS1_2
510 if (max_version == TLS1_2_VERSION)
511 max_version = TLS1_1_VERSION;
513 #ifdef OPENSSL_NO_TLS1_1
514 if (max_version == TLS1_1_VERSION)
515 max_version = TLS1_VERSION;
517 #ifdef OPENSSL_NO_TLS1
518 if (max_version == TLS1_VERSION)
519 max_version = SSL3_VERSION;
521 #ifdef OPENSSL_NO_SSL3
522 if (min_version == SSL3_VERSION)
523 min_version = TLS1_VERSION;
525 #ifdef OPENSSL_NO_TLS1
526 if (min_version == TLS1_VERSION)
527 min_version = TLS1_1_VERSION;
529 #ifdef OPENSSL_NO_TLS1_1
530 if (min_version == TLS1_1_VERSION)
531 min_version = TLS1_2_VERSION;
533 #ifdef OPENSSL_NO_TLS1_2
534 if (min_version == TLS1_2_VERSION)
535 min_version = TLS1_3_VERSION;
537 /* Done massaging versions; do the check. */
539 #ifdef OPENSSL_NO_SSL3
540 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
542 #ifdef OPENSSL_NO_TLS1
543 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
545 #ifdef OPENSSL_NO_TLS1_1
546 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
548 #ifdef OPENSSL_NO_TLS1_2
549 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
551 #ifdef OPENSSL_NO_TLS1_3
552 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
560 static void clear_ciphers(SSL *s)
562 /* clear the current cipher */
563 ssl_clear_cipher_ctx(s);
564 ssl_clear_hash_ctx(&s->read_hash);
565 ssl_clear_hash_ctx(&s->write_hash);
568 int SSL_clear(SSL *s)
570 if (s->method == NULL) {
571 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
575 if (ssl_clear_bad_session(s)) {
576 SSL_SESSION_free(s->session);
579 SSL_SESSION_free(s->psksession);
580 s->psksession = NULL;
581 OPENSSL_free(s->psksession_id);
582 s->psksession_id = NULL;
583 s->psksession_id_len = 0;
584 s->hello_retry_request = 0;
591 if (s->renegotiate) {
592 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
596 ossl_statem_clear(s);
598 s->version = s->method->version;
599 s->client_version = s->version;
600 s->rwstate = SSL_NOTHING;
602 BUF_MEM_free(s->init_buf);
607 s->key_update = SSL_KEY_UPDATE_NONE;
609 EVP_MD_CTX_free(s->pha_dgst);
612 /* Reset DANE verification result state */
615 X509_free(s->dane.mcert);
616 s->dane.mcert = NULL;
617 s->dane.mtlsa = NULL;
619 /* Clear the verification result peername */
620 X509_VERIFY_PARAM_move_peername(s->param, NULL);
622 /* Clear any shared connection state */
623 OPENSSL_free(s->shared_sigalgs);
624 s->shared_sigalgs = NULL;
625 s->shared_sigalgslen = 0;
628 * Check to see if we were changed into a different method, if so, revert
631 if (s->method != s->ctx->method) {
632 s->method->ssl_free(s);
633 s->method = s->ctx->method;
634 if (!s->method->ssl_new(s))
637 if (!s->method->ssl_clear(s))
641 RECORD_LAYER_clear(&s->rlayer);
646 /** Used to change an SSL_CTXs default SSL method type */
647 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
649 STACK_OF(SSL_CIPHER) *sk;
653 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
654 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
657 sk = ssl_create_cipher_list(ctx->method,
658 ctx->tls13_ciphersuites,
660 &(ctx->cipher_list_by_id),
661 OSSL_default_cipher_list(), ctx->cert);
662 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
663 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
669 SSL *SSL_new(SSL_CTX *ctx)
674 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
677 if (ctx->method == NULL) {
678 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
682 s = OPENSSL_zalloc(sizeof(*s));
687 s->lock = CRYPTO_THREAD_lock_new();
688 if (s->lock == NULL) {
694 RECORD_LAYER_init(&s->rlayer, s);
696 s->options = ctx->options;
697 s->dane.flags = ctx->dane.flags;
698 s->min_proto_version = ctx->min_proto_version;
699 s->max_proto_version = ctx->max_proto_version;
701 s->max_cert_list = ctx->max_cert_list;
702 s->max_early_data = ctx->max_early_data;
703 s->recv_max_early_data = ctx->recv_max_early_data;
704 s->num_tickets = ctx->num_tickets;
705 s->pha_enabled = ctx->pha_enabled;
707 /* Shallow copy of the ciphersuites stack */
708 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
709 if (s->tls13_ciphersuites == NULL)
713 * Earlier library versions used to copy the pointer to the CERT, not
714 * its contents; only when setting new parameters for the per-SSL
715 * copy, ssl_cert_new would be called (and the direct reference to
716 * the per-SSL_CTX settings would be lost, but those still were
717 * indirectly accessed for various purposes, and for that reason they
718 * used to be known as s->ctx->default_cert). Now we don't look at the
719 * SSL_CTX's CERT after having duplicated it once.
721 s->cert = ssl_cert_dup(ctx->cert);
725 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
726 s->msg_callback = ctx->msg_callback;
727 s->msg_callback_arg = ctx->msg_callback_arg;
728 s->verify_mode = ctx->verify_mode;
729 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
730 s->record_padding_cb = ctx->record_padding_cb;
731 s->record_padding_arg = ctx->record_padding_arg;
732 s->block_padding = ctx->block_padding;
733 s->sid_ctx_length = ctx->sid_ctx_length;
734 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
736 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
737 s->verify_callback = ctx->default_verify_callback;
738 s->generate_session_id = ctx->generate_session_id;
740 s->param = X509_VERIFY_PARAM_new();
741 if (s->param == NULL)
743 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
744 s->quiet_shutdown = ctx->quiet_shutdown;
746 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
747 s->max_send_fragment = ctx->max_send_fragment;
748 s->split_send_fragment = ctx->split_send_fragment;
749 s->max_pipelines = ctx->max_pipelines;
750 if (s->max_pipelines > 1)
751 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
752 if (ctx->default_read_buf_len > 0)
753 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
758 s->ext.debug_arg = NULL;
759 s->ext.ticket_expected = 0;
760 s->ext.status_type = ctx->ext.status_type;
761 s->ext.status_expected = 0;
762 s->ext.ocsp.ids = NULL;
763 s->ext.ocsp.exts = NULL;
764 s->ext.ocsp.resp = NULL;
765 s->ext.ocsp.resp_len = 0;
767 s->session_ctx = ctx;
768 #ifndef OPENSSL_NO_EC
769 if (ctx->ext.ecpointformats) {
770 s->ext.ecpointformats =
771 OPENSSL_memdup(ctx->ext.ecpointformats,
772 ctx->ext.ecpointformats_len);
773 if (!s->ext.ecpointformats)
775 s->ext.ecpointformats_len =
776 ctx->ext.ecpointformats_len;
779 if (ctx->ext.supportedgroups) {
780 s->ext.supportedgroups =
781 OPENSSL_memdup(ctx->ext.supportedgroups,
782 ctx->ext.supportedgroups_len
783 * sizeof(*ctx->ext.supportedgroups));
784 if (!s->ext.supportedgroups)
786 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
789 #ifndef OPENSSL_NO_NEXTPROTONEG
793 if (s->ctx->ext.alpn) {
794 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
795 if (s->ext.alpn == NULL)
797 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
798 s->ext.alpn_len = s->ctx->ext.alpn_len;
801 s->verified_chain = NULL;
802 s->verify_result = X509_V_OK;
804 s->default_passwd_callback = ctx->default_passwd_callback;
805 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
807 s->method = ctx->method;
809 s->key_update = SSL_KEY_UPDATE_NONE;
811 s->allow_early_data_cb = ctx->allow_early_data_cb;
812 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
814 if (!s->method->ssl_new(s))
817 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
822 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
825 #ifndef OPENSSL_NO_PSK
826 s->psk_client_callback = ctx->psk_client_callback;
827 s->psk_server_callback = ctx->psk_server_callback;
829 s->psk_find_session_cb = ctx->psk_find_session_cb;
830 s->psk_use_session_cb = ctx->psk_use_session_cb;
832 s->async_cb = ctx->async_cb;
833 s->async_cb_arg = ctx->async_cb_arg;
837 #ifndef OPENSSL_NO_CT
838 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
839 ctx->ct_validation_callback_arg))
846 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
850 int SSL_is_dtls(const SSL *s)
852 return SSL_IS_DTLS(s) ? 1 : 0;
855 int SSL_up_ref(SSL *s)
859 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
862 REF_PRINT_COUNT("SSL", s);
863 REF_ASSERT_ISNT(i < 2);
864 return ((i > 1) ? 1 : 0);
867 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
868 unsigned int sid_ctx_len)
870 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
871 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
872 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
875 ctx->sid_ctx_length = sid_ctx_len;
876 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
881 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
882 unsigned int sid_ctx_len)
884 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
885 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
886 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
889 ssl->sid_ctx_length = sid_ctx_len;
890 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
895 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
897 CRYPTO_THREAD_write_lock(ctx->lock);
898 ctx->generate_session_id = cb;
899 CRYPTO_THREAD_unlock(ctx->lock);
903 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
905 CRYPTO_THREAD_write_lock(ssl->lock);
906 ssl->generate_session_id = cb;
907 CRYPTO_THREAD_unlock(ssl->lock);
911 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
915 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
916 * we can "construct" a session to give us the desired check - i.e. to
917 * find if there's a session in the hash table that would conflict with
918 * any new session built out of this id/id_len and the ssl_version in use
923 if (id_len > sizeof(r.session_id))
926 r.ssl_version = ssl->version;
927 r.session_id_length = id_len;
928 memcpy(r.session_id, id, id_len);
930 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
931 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
932 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
936 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
938 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
941 int SSL_set_purpose(SSL *s, int purpose)
943 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
946 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
948 return X509_VERIFY_PARAM_set_trust(s->param, trust);
951 int SSL_set_trust(SSL *s, int trust)
953 return X509_VERIFY_PARAM_set_trust(s->param, trust);
956 int SSL_set1_host(SSL *s, const char *hostname)
958 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
961 int SSL_add1_host(SSL *s, const char *hostname)
963 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
966 void SSL_set_hostflags(SSL *s, unsigned int flags)
968 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
971 const char *SSL_get0_peername(SSL *s)
973 return X509_VERIFY_PARAM_get0_peername(s->param);
976 int SSL_CTX_dane_enable(SSL_CTX *ctx)
978 return dane_ctx_enable(&ctx->dane);
981 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
983 unsigned long orig = ctx->dane.flags;
985 ctx->dane.flags |= flags;
989 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
991 unsigned long orig = ctx->dane.flags;
993 ctx->dane.flags &= ~flags;
997 int SSL_dane_enable(SSL *s, const char *basedomain)
999 SSL_DANE *dane = &s->dane;
1001 if (s->ctx->dane.mdmax == 0) {
1002 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1005 if (dane->trecs != NULL) {
1006 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1011 * Default SNI name. This rejects empty names, while set1_host below
1012 * accepts them and disables host name checks. To avoid side-effects with
1013 * invalid input, set the SNI name first.
1015 if (s->ext.hostname == NULL) {
1016 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1017 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1022 /* Primary RFC6125 reference identifier */
1023 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1024 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1030 dane->dctx = &s->ctx->dane;
1031 dane->trecs = sk_danetls_record_new_null();
1033 if (dane->trecs == NULL) {
1034 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1040 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1042 unsigned long orig = ssl->dane.flags;
1044 ssl->dane.flags |= flags;
1048 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1050 unsigned long orig = ssl->dane.flags;
1052 ssl->dane.flags &= ~flags;
1056 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1058 SSL_DANE *dane = &s->dane;
1060 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1064 *mcert = dane->mcert;
1066 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1071 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1072 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1074 SSL_DANE *dane = &s->dane;
1076 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1080 *usage = dane->mtlsa->usage;
1082 *selector = dane->mtlsa->selector;
1084 *mtype = dane->mtlsa->mtype;
1086 *data = dane->mtlsa->data;
1088 *dlen = dane->mtlsa->dlen;
1093 SSL_DANE *SSL_get0_dane(SSL *s)
1098 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1099 uint8_t mtype, unsigned const char *data, size_t dlen)
1101 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1104 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1107 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1110 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1112 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1115 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1117 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1120 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1125 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1130 void SSL_certs_clear(SSL *s)
1132 ssl_cert_clear_certs(s->cert);
1135 void SSL_free(SSL *s)
1141 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1142 REF_PRINT_COUNT("SSL", s);
1145 REF_ASSERT_ISNT(i < 0);
1147 X509_VERIFY_PARAM_free(s->param);
1148 dane_final(&s->dane);
1149 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1151 RECORD_LAYER_release(&s->rlayer);
1153 /* Ignore return value */
1154 ssl_free_wbio_buffer(s);
1156 BIO_free_all(s->wbio);
1158 BIO_free_all(s->rbio);
1161 BUF_MEM_free(s->init_buf);
1163 /* add extra stuff */
1164 sk_SSL_CIPHER_free(s->cipher_list);
1165 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1166 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1167 sk_SSL_CIPHER_free(s->peer_ciphers);
1169 /* Make the next call work :-) */
1170 if (s->session != NULL) {
1171 ssl_clear_bad_session(s);
1172 SSL_SESSION_free(s->session);
1174 SSL_SESSION_free(s->psksession);
1175 OPENSSL_free(s->psksession_id);
1179 ssl_cert_free(s->cert);
1180 OPENSSL_free(s->shared_sigalgs);
1181 /* Free up if allocated */
1183 OPENSSL_free(s->ext.hostname);
1184 SSL_CTX_free(s->session_ctx);
1185 #ifndef OPENSSL_NO_EC
1186 OPENSSL_free(s->ext.ecpointformats);
1187 OPENSSL_free(s->ext.peer_ecpointformats);
1188 #endif /* OPENSSL_NO_EC */
1189 OPENSSL_free(s->ext.supportedgroups);
1190 OPENSSL_free(s->ext.peer_supportedgroups);
1191 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1192 #ifndef OPENSSL_NO_OCSP
1193 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1195 #ifndef OPENSSL_NO_CT
1196 SCT_LIST_free(s->scts);
1197 OPENSSL_free(s->ext.scts);
1199 OPENSSL_free(s->ext.ocsp.resp);
1200 OPENSSL_free(s->ext.alpn);
1201 OPENSSL_free(s->ext.tls13_cookie);
1202 if (s->clienthello != NULL)
1203 OPENSSL_free(s->clienthello->pre_proc_exts);
1204 OPENSSL_free(s->clienthello);
1205 OPENSSL_free(s->pha_context);
1206 EVP_MD_CTX_free(s->pha_dgst);
1208 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1209 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1211 sk_X509_pop_free(s->verified_chain, X509_free);
1213 if (s->method != NULL)
1214 s->method->ssl_free(s);
1216 SSL_CTX_free(s->ctx);
1218 ASYNC_WAIT_CTX_free(s->waitctx);
1220 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1221 OPENSSL_free(s->ext.npn);
1224 #ifndef OPENSSL_NO_SRTP
1225 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1228 CRYPTO_THREAD_lock_free(s->lock);
1233 void SSL_set0_rbio(SSL *s, BIO *rbio)
1235 BIO_free_all(s->rbio);
1239 void SSL_set0_wbio(SSL *s, BIO *wbio)
1242 * If the output buffering BIO is still in place, remove it
1244 if (s->bbio != NULL)
1245 s->wbio = BIO_pop(s->wbio);
1247 BIO_free_all(s->wbio);
1250 /* Re-attach |bbio| to the new |wbio|. */
1251 if (s->bbio != NULL)
1252 s->wbio = BIO_push(s->bbio, s->wbio);
1255 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1258 * For historical reasons, this function has many different cases in
1259 * ownership handling.
1262 /* If nothing has changed, do nothing */
1263 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1267 * If the two arguments are equal then one fewer reference is granted by the
1268 * caller than we want to take
1270 if (rbio != NULL && rbio == wbio)
1274 * If only the wbio is changed only adopt one reference.
1276 if (rbio == SSL_get_rbio(s)) {
1277 SSL_set0_wbio(s, wbio);
1281 * There is an asymmetry here for historical reasons. If only the rbio is
1282 * changed AND the rbio and wbio were originally different, then we only
1283 * adopt one reference.
1285 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1286 SSL_set0_rbio(s, rbio);
1290 /* Otherwise, adopt both references. */
1291 SSL_set0_rbio(s, rbio);
1292 SSL_set0_wbio(s, wbio);
1295 BIO *SSL_get_rbio(const SSL *s)
1300 BIO *SSL_get_wbio(const SSL *s)
1302 if (s->bbio != NULL) {
1304 * If |bbio| is active, the true caller-configured BIO is its
1307 return BIO_next(s->bbio);
1312 int SSL_get_fd(const SSL *s)
1314 return SSL_get_rfd(s);
1317 int SSL_get_rfd(const SSL *s)
1322 b = SSL_get_rbio(s);
1323 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1325 BIO_get_fd(r, &ret);
1329 int SSL_get_wfd(const SSL *s)
1334 b = SSL_get_wbio(s);
1335 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1337 BIO_get_fd(r, &ret);
1341 #ifndef OPENSSL_NO_SOCK
1342 int SSL_set_fd(SSL *s, int fd)
1347 bio = BIO_new(BIO_s_socket());
1350 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1353 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1354 SSL_set_bio(s, bio, bio);
1355 #ifndef OPENSSL_NO_KTLS
1357 * The new socket is created successfully regardless of ktls_enable.
1358 * ktls_enable doesn't change any functionality of the socket, except
1359 * changing the setsockopt to enable the processing of ktls_start.
1360 * Thus, it is not a problem to call it for non-TLS sockets.
1363 #endif /* OPENSSL_NO_KTLS */
1369 int SSL_set_wfd(SSL *s, int fd)
1371 BIO *rbio = SSL_get_rbio(s);
1373 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1374 || (int)BIO_get_fd(rbio, NULL) != fd) {
1375 BIO *bio = BIO_new(BIO_s_socket());
1378 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1381 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1382 SSL_set0_wbio(s, bio);
1383 #ifndef OPENSSL_NO_KTLS
1385 * The new socket is created successfully regardless of ktls_enable.
1386 * ktls_enable doesn't change any functionality of the socket, except
1387 * changing the setsockopt to enable the processing of ktls_start.
1388 * Thus, it is not a problem to call it for non-TLS sockets.
1391 #endif /* OPENSSL_NO_KTLS */
1394 SSL_set0_wbio(s, rbio);
1399 int SSL_set_rfd(SSL *s, int fd)
1401 BIO *wbio = SSL_get_wbio(s);
1403 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1404 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1405 BIO *bio = BIO_new(BIO_s_socket());
1408 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1411 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1412 SSL_set0_rbio(s, bio);
1415 SSL_set0_rbio(s, wbio);
1422 /* return length of latest Finished message we sent, copy to 'buf' */
1423 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1427 ret = s->s3.tmp.finish_md_len;
1430 memcpy(buf, s->s3.tmp.finish_md, count);
1434 /* return length of latest Finished message we expected, copy to 'buf' */
1435 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1439 ret = s->s3.tmp.peer_finish_md_len;
1442 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1446 int SSL_get_verify_mode(const SSL *s)
1448 return s->verify_mode;
1451 int SSL_get_verify_depth(const SSL *s)
1453 return X509_VERIFY_PARAM_get_depth(s->param);
1456 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1457 return s->verify_callback;
1460 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1462 return ctx->verify_mode;
1465 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1467 return X509_VERIFY_PARAM_get_depth(ctx->param);
1470 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1471 return ctx->default_verify_callback;
1474 void SSL_set_verify(SSL *s, int mode,
1475 int (*callback) (int ok, X509_STORE_CTX *ctx))
1477 s->verify_mode = mode;
1478 if (callback != NULL)
1479 s->verify_callback = callback;
1482 void SSL_set_verify_depth(SSL *s, int depth)
1484 X509_VERIFY_PARAM_set_depth(s->param, depth);
1487 void SSL_set_read_ahead(SSL *s, int yes)
1489 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1492 int SSL_get_read_ahead(const SSL *s)
1494 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1497 int SSL_pending(const SSL *s)
1499 size_t pending = s->method->ssl_pending(s);
1502 * SSL_pending cannot work properly if read-ahead is enabled
1503 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1504 * impossible to fix since SSL_pending cannot report errors that may be
1505 * observed while scanning the new data. (Note that SSL_pending() is
1506 * often used as a boolean value, so we'd better not return -1.)
1508 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1509 * we just return INT_MAX.
1511 return pending < INT_MAX ? (int)pending : INT_MAX;
1514 int SSL_has_pending(const SSL *s)
1517 * Similar to SSL_pending() but returns a 1 to indicate that we have
1518 * unprocessed data available or 0 otherwise (as opposed to the number of
1519 * bytes available). Unlike SSL_pending() this will take into account
1520 * read_ahead data. A 1 return simply indicates that we have unprocessed
1521 * data. That data may not result in any application data, or we may fail
1522 * to parse the records for some reason.
1524 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1527 return RECORD_LAYER_read_pending(&s->rlayer);
1530 X509 *SSL_get1_peer_certificate(const SSL *s)
1532 X509 *r = SSL_get0_peer_certificate(s);
1540 X509 *SSL_get0_peer_certificate(const SSL *s)
1542 if ((s == NULL) || (s->session == NULL))
1545 return s->session->peer;
1548 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1552 if ((s == NULL) || (s->session == NULL))
1555 r = s->session->peer_chain;
1558 * If we are a client, cert_chain includes the peer's own certificate; if
1559 * we are a server, it does not.
1566 * Now in theory, since the calling process own 't' it should be safe to
1567 * modify. We need to be able to read f without being hassled
1569 int SSL_copy_session_id(SSL *t, const SSL *f)
1572 /* Do we need to to SSL locking? */
1573 if (!SSL_set_session(t, SSL_get_session(f))) {
1578 * what if we are setup for one protocol version but want to talk another
1580 if (t->method != f->method) {
1581 t->method->ssl_free(t);
1582 t->method = f->method;
1583 if (t->method->ssl_new(t) == 0)
1587 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1588 ssl_cert_free(t->cert);
1590 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1597 /* Fix this so it checks all the valid key/cert options */
1598 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1600 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1601 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1604 if (ctx->cert->key->privatekey == NULL) {
1605 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1608 return X509_check_private_key
1609 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1612 /* Fix this function so that it takes an optional type parameter */
1613 int SSL_check_private_key(const SSL *ssl)
1616 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1619 if (ssl->cert->key->x509 == NULL) {
1620 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1623 if (ssl->cert->key->privatekey == NULL) {
1624 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1627 return X509_check_private_key(ssl->cert->key->x509,
1628 ssl->cert->key->privatekey);
1631 int SSL_waiting_for_async(SSL *s)
1639 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1641 ASYNC_WAIT_CTX *ctx = s->waitctx;
1645 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1648 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1649 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1651 ASYNC_WAIT_CTX *ctx = s->waitctx;
1655 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1659 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1661 ctx->async_cb = callback;
1665 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1667 ctx->async_cb_arg = arg;
1671 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1673 s->async_cb = callback;
1677 int SSL_set_async_callback_arg(SSL *s, void *arg)
1679 s->async_cb_arg = arg;
1683 int SSL_get_async_status(SSL *s, int *status)
1685 ASYNC_WAIT_CTX *ctx = s->waitctx;
1689 *status = ASYNC_WAIT_CTX_get_status(ctx);
1693 int SSL_accept(SSL *s)
1695 if (s->handshake_func == NULL) {
1696 /* Not properly initialized yet */
1697 SSL_set_accept_state(s);
1700 return SSL_do_handshake(s);
1703 int SSL_connect(SSL *s)
1705 if (s->handshake_func == NULL) {
1706 /* Not properly initialized yet */
1707 SSL_set_connect_state(s);
1710 return SSL_do_handshake(s);
1713 long SSL_get_default_timeout(const SSL *s)
1715 return s->method->get_timeout();
1718 static int ssl_async_wait_ctx_cb(void *arg)
1720 SSL *s = (SSL *)arg;
1722 return s->async_cb(s, s->async_cb_arg);
1725 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1726 int (*func) (void *))
1729 if (s->waitctx == NULL) {
1730 s->waitctx = ASYNC_WAIT_CTX_new();
1731 if (s->waitctx == NULL)
1733 if (s->async_cb != NULL
1734 && !ASYNC_WAIT_CTX_set_callback
1735 (s->waitctx, ssl_async_wait_ctx_cb, s))
1738 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1739 sizeof(struct ssl_async_args))) {
1741 s->rwstate = SSL_NOTHING;
1742 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1745 s->rwstate = SSL_ASYNC_PAUSED;
1748 s->rwstate = SSL_ASYNC_NO_JOBS;
1754 s->rwstate = SSL_NOTHING;
1755 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1756 /* Shouldn't happen */
1761 static int ssl_io_intern(void *vargs)
1763 struct ssl_async_args *args;
1768 args = (struct ssl_async_args *)vargs;
1772 switch (args->type) {
1774 return args->f.func_read(s, buf, num, &s->asyncrw);
1776 return args->f.func_write(s, buf, num, &s->asyncrw);
1778 return args->f.func_other(s);
1783 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1785 if (s->handshake_func == NULL) {
1786 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1790 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1791 s->rwstate = SSL_NOTHING;
1795 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1796 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1797 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1801 * If we are a client and haven't received the ServerHello etc then we
1804 ossl_statem_check_finish_init(s, 0);
1806 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1807 struct ssl_async_args args;
1813 args.type = READFUNC;
1814 args.f.func_read = s->method->ssl_read;
1816 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1817 *readbytes = s->asyncrw;
1820 return s->method->ssl_read(s, buf, num, readbytes);
1824 int SSL_read(SSL *s, void *buf, int num)
1830 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1834 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1837 * The cast is safe here because ret should be <= INT_MAX because num is
1841 ret = (int)readbytes;
1846 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1848 int ret = ssl_read_internal(s, buf, num, readbytes);
1855 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1860 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1861 return SSL_READ_EARLY_DATA_ERROR;
1864 switch (s->early_data_state) {
1865 case SSL_EARLY_DATA_NONE:
1866 if (!SSL_in_before(s)) {
1867 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1868 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1869 return SSL_READ_EARLY_DATA_ERROR;
1873 case SSL_EARLY_DATA_ACCEPT_RETRY:
1874 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1875 ret = SSL_accept(s);
1878 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1879 return SSL_READ_EARLY_DATA_ERROR;
1883 case SSL_EARLY_DATA_READ_RETRY:
1884 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1885 s->early_data_state = SSL_EARLY_DATA_READING;
1886 ret = SSL_read_ex(s, buf, num, readbytes);
1888 * State machine will update early_data_state to
1889 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1892 if (ret > 0 || (ret <= 0 && s->early_data_state
1893 != SSL_EARLY_DATA_FINISHED_READING)) {
1894 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1895 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1896 : SSL_READ_EARLY_DATA_ERROR;
1899 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1902 return SSL_READ_EARLY_DATA_FINISH;
1905 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1906 return SSL_READ_EARLY_DATA_ERROR;
1910 int SSL_get_early_data_status(const SSL *s)
1912 return s->ext.early_data;
1915 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1917 if (s->handshake_func == NULL) {
1918 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1922 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1925 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1926 struct ssl_async_args args;
1932 args.type = READFUNC;
1933 args.f.func_read = s->method->ssl_peek;
1935 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1936 *readbytes = s->asyncrw;
1939 return s->method->ssl_peek(s, buf, num, readbytes);
1943 int SSL_peek(SSL *s, void *buf, int num)
1949 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1953 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1956 * The cast is safe here because ret should be <= INT_MAX because num is
1960 ret = (int)readbytes;
1966 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1968 int ret = ssl_peek_internal(s, buf, num, readbytes);
1975 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1977 if (s->handshake_func == NULL) {
1978 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1982 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1983 s->rwstate = SSL_NOTHING;
1984 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1988 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1989 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1990 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1991 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1994 /* If we are a client and haven't sent the Finished we better do that */
1995 ossl_statem_check_finish_init(s, 1);
1997 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1999 struct ssl_async_args args;
2002 args.buf = (void *)buf;
2004 args.type = WRITEFUNC;
2005 args.f.func_write = s->method->ssl_write;
2007 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2008 *written = s->asyncrw;
2011 return s->method->ssl_write(s, buf, num, written);
2015 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2019 if (s->handshake_func == NULL) {
2020 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2024 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2025 s->rwstate = SSL_NOTHING;
2026 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2030 if (!BIO_get_ktls_send(s->wbio)) {
2031 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2035 /* If we have an alert to send, lets send it */
2036 if (s->s3.alert_dispatch) {
2037 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2039 /* SSLfatal() already called if appropriate */
2042 /* if it went, fall through and send more stuff */
2045 s->rwstate = SSL_WRITING;
2046 if (BIO_flush(s->wbio) <= 0) {
2047 if (!BIO_should_retry(s->wbio)) {
2048 s->rwstate = SSL_NOTHING;
2051 set_sys_error(EAGAIN);
2057 #ifdef OPENSSL_NO_KTLS
2058 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2059 "can't call ktls_sendfile(), ktls disabled");
2062 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2064 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2065 if ((get_last_sys_error() == EAGAIN) ||
2066 (get_last_sys_error() == EINTR) ||
2067 (get_last_sys_error() == EBUSY))
2068 BIO_set_retry_write(s->wbio);
2071 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2074 s->rwstate = SSL_NOTHING;
2079 int SSL_write(SSL *s, const void *buf, int num)
2085 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2089 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2092 * The cast is safe here because ret should be <= INT_MAX because num is
2101 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2103 int ret = ssl_write_internal(s, buf, num, written);
2110 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2112 int ret, early_data_state;
2114 uint32_t partialwrite;
2116 switch (s->early_data_state) {
2117 case SSL_EARLY_DATA_NONE:
2119 || !SSL_in_before(s)
2120 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2121 && (s->psk_use_session_cb == NULL))) {
2122 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2123 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2128 case SSL_EARLY_DATA_CONNECT_RETRY:
2129 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2130 ret = SSL_connect(s);
2133 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2138 case SSL_EARLY_DATA_WRITE_RETRY:
2139 s->early_data_state = SSL_EARLY_DATA_WRITING;
2141 * We disable partial write for early data because we don't keep track
2142 * of how many bytes we've written between the SSL_write_ex() call and
2143 * the flush if the flush needs to be retried)
2145 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2146 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2147 ret = SSL_write_ex(s, buf, num, &writtmp);
2148 s->mode |= partialwrite;
2150 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2153 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2156 case SSL_EARLY_DATA_WRITE_FLUSH:
2157 /* The buffering BIO is still in place so we need to flush it */
2158 if (statem_flush(s) != 1)
2161 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2164 case SSL_EARLY_DATA_FINISHED_READING:
2165 case SSL_EARLY_DATA_READ_RETRY:
2166 early_data_state = s->early_data_state;
2167 /* We are a server writing to an unauthenticated client */
2168 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2169 ret = SSL_write_ex(s, buf, num, written);
2170 /* The buffering BIO is still in place */
2172 (void)BIO_flush(s->wbio);
2173 s->early_data_state = early_data_state;
2177 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2182 int SSL_shutdown(SSL *s)
2185 * Note that this function behaves differently from what one might
2186 * expect. Return values are 0 for no success (yet), 1 for success; but
2187 * calling it once is usually not enough, even if blocking I/O is used
2188 * (see ssl3_shutdown).
2191 if (s->handshake_func == NULL) {
2192 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2196 if (!SSL_in_init(s)) {
2197 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2198 struct ssl_async_args args;
2201 args.type = OTHERFUNC;
2202 args.f.func_other = s->method->ssl_shutdown;
2204 return ssl_start_async_job(s, &args, ssl_io_intern);
2206 return s->method->ssl_shutdown(s);
2209 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2214 int SSL_key_update(SSL *s, int updatetype)
2217 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2218 * negotiated, and that it is appropriate to call SSL_key_update() instead
2219 * of SSL_renegotiate().
2221 if (!SSL_IS_TLS13(s)) {
2222 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2226 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2227 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2228 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2232 if (!SSL_is_init_finished(s)) {
2233 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2237 ossl_statem_set_in_init(s, 1);
2238 s->key_update = updatetype;
2242 int SSL_get_key_update_type(const SSL *s)
2244 return s->key_update;
2247 int SSL_renegotiate(SSL *s)
2249 if (SSL_IS_TLS13(s)) {
2250 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2254 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2255 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2262 return s->method->ssl_renegotiate(s);
2265 int SSL_renegotiate_abbreviated(SSL *s)
2267 if (SSL_IS_TLS13(s)) {
2268 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2272 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2273 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2280 return s->method->ssl_renegotiate(s);
2283 int SSL_renegotiate_pending(const SSL *s)
2286 * becomes true when negotiation is requested; false again once a
2287 * handshake has finished
2289 return (s->renegotiate != 0);
2292 int SSL_new_session_ticket(SSL *s)
2294 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2295 || !SSL_IS_TLS13(s))
2297 s->ext.extra_tickets_expected++;
2301 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2306 case SSL_CTRL_GET_READ_AHEAD:
2307 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2308 case SSL_CTRL_SET_READ_AHEAD:
2309 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2310 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2313 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2314 s->msg_callback_arg = parg;
2318 return (s->mode |= larg);
2319 case SSL_CTRL_CLEAR_MODE:
2320 return (s->mode &= ~larg);
2321 case SSL_CTRL_GET_MAX_CERT_LIST:
2322 return (long)s->max_cert_list;
2323 case SSL_CTRL_SET_MAX_CERT_LIST:
2326 l = (long)s->max_cert_list;
2327 s->max_cert_list = (size_t)larg;
2329 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2330 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2332 #ifndef OPENSSL_NO_KTLS
2333 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2335 #endif /* OPENSSL_NO_KTLS */
2336 s->max_send_fragment = larg;
2337 if (s->max_send_fragment < s->split_send_fragment)
2338 s->split_send_fragment = s->max_send_fragment;
2340 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2341 if ((size_t)larg > s->max_send_fragment || larg == 0)
2343 s->split_send_fragment = larg;
2345 case SSL_CTRL_SET_MAX_PIPELINES:
2346 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2348 s->max_pipelines = larg;
2350 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2352 case SSL_CTRL_GET_RI_SUPPORT:
2353 return s->s3.send_connection_binding;
2354 case SSL_CTRL_CERT_FLAGS:
2355 return (s->cert->cert_flags |= larg);
2356 case SSL_CTRL_CLEAR_CERT_FLAGS:
2357 return (s->cert->cert_flags &= ~larg);
2359 case SSL_CTRL_GET_RAW_CIPHERLIST:
2361 if (s->s3.tmp.ciphers_raw == NULL)
2363 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2364 return (int)s->s3.tmp.ciphers_rawlen;
2366 return TLS_CIPHER_LEN;
2368 case SSL_CTRL_GET_EXTMS_SUPPORT:
2369 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2371 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2375 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2376 return ssl_check_allowed_versions(larg, s->max_proto_version)
2377 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2378 &s->min_proto_version);
2379 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2380 return s->min_proto_version;
2381 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2382 return ssl_check_allowed_versions(s->min_proto_version, larg)
2383 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2384 &s->max_proto_version);
2385 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2386 return s->max_proto_version;
2388 return s->method->ssl_ctrl(s, cmd, larg, parg);
2392 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2395 case SSL_CTRL_SET_MSG_CALLBACK:
2396 s->msg_callback = (void (*)
2397 (int write_p, int version, int content_type,
2398 const void *buf, size_t len, SSL *ssl,
2403 return s->method->ssl_callback_ctrl(s, cmd, fp);
2407 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2409 return ctx->sessions;
2412 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2415 /* For some cases with ctx == NULL perform syntax checks */
2418 case SSL_CTRL_SET_GROUPS_LIST:
2419 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2420 case SSL_CTRL_SET_SIGALGS_LIST:
2421 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2422 return tls1_set_sigalgs_list(NULL, parg, 0);
2429 case SSL_CTRL_GET_READ_AHEAD:
2430 return ctx->read_ahead;
2431 case SSL_CTRL_SET_READ_AHEAD:
2432 l = ctx->read_ahead;
2433 ctx->read_ahead = larg;
2436 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2437 ctx->msg_callback_arg = parg;
2440 case SSL_CTRL_GET_MAX_CERT_LIST:
2441 return (long)ctx->max_cert_list;
2442 case SSL_CTRL_SET_MAX_CERT_LIST:
2445 l = (long)ctx->max_cert_list;
2446 ctx->max_cert_list = (size_t)larg;
2449 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2452 l = (long)ctx->session_cache_size;
2453 ctx->session_cache_size = (size_t)larg;
2455 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2456 return (long)ctx->session_cache_size;
2457 case SSL_CTRL_SET_SESS_CACHE_MODE:
2458 l = ctx->session_cache_mode;
2459 ctx->session_cache_mode = larg;
2461 case SSL_CTRL_GET_SESS_CACHE_MODE:
2462 return ctx->session_cache_mode;
2464 case SSL_CTRL_SESS_NUMBER:
2465 return lh_SSL_SESSION_num_items(ctx->sessions);
2466 case SSL_CTRL_SESS_CONNECT:
2467 return tsan_load(&ctx->stats.sess_connect);
2468 case SSL_CTRL_SESS_CONNECT_GOOD:
2469 return tsan_load(&ctx->stats.sess_connect_good);
2470 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2471 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2472 case SSL_CTRL_SESS_ACCEPT:
2473 return tsan_load(&ctx->stats.sess_accept);
2474 case SSL_CTRL_SESS_ACCEPT_GOOD:
2475 return tsan_load(&ctx->stats.sess_accept_good);
2476 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2477 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2478 case SSL_CTRL_SESS_HIT:
2479 return tsan_load(&ctx->stats.sess_hit);
2480 case SSL_CTRL_SESS_CB_HIT:
2481 return tsan_load(&ctx->stats.sess_cb_hit);
2482 case SSL_CTRL_SESS_MISSES:
2483 return tsan_load(&ctx->stats.sess_miss);
2484 case SSL_CTRL_SESS_TIMEOUTS:
2485 return tsan_load(&ctx->stats.sess_timeout);
2486 case SSL_CTRL_SESS_CACHE_FULL:
2487 return tsan_load(&ctx->stats.sess_cache_full);
2489 return (ctx->mode |= larg);
2490 case SSL_CTRL_CLEAR_MODE:
2491 return (ctx->mode &= ~larg);
2492 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2493 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2495 ctx->max_send_fragment = larg;
2496 if (ctx->max_send_fragment < ctx->split_send_fragment)
2497 ctx->split_send_fragment = ctx->max_send_fragment;
2499 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2500 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2502 ctx->split_send_fragment = larg;
2504 case SSL_CTRL_SET_MAX_PIPELINES:
2505 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2507 ctx->max_pipelines = larg;
2509 case SSL_CTRL_CERT_FLAGS:
2510 return (ctx->cert->cert_flags |= larg);
2511 case SSL_CTRL_CLEAR_CERT_FLAGS:
2512 return (ctx->cert->cert_flags &= ~larg);
2513 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2514 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2515 && ssl_set_version_bound(ctx->method->version, (int)larg,
2516 &ctx->min_proto_version);
2517 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2518 return ctx->min_proto_version;
2519 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2520 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2521 && ssl_set_version_bound(ctx->method->version, (int)larg,
2522 &ctx->max_proto_version);
2523 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2524 return ctx->max_proto_version;
2526 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2530 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2533 case SSL_CTRL_SET_MSG_CALLBACK:
2534 ctx->msg_callback = (void (*)
2535 (int write_p, int version, int content_type,
2536 const void *buf, size_t len, SSL *ssl,
2541 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2545 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2554 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2555 const SSL_CIPHER *const *bp)
2557 if ((*ap)->id > (*bp)->id)
2559 if ((*ap)->id < (*bp)->id)
2564 /** return a STACK of the ciphers available for the SSL and in order of
2566 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2569 if (s->cipher_list != NULL) {
2570 return s->cipher_list;
2571 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2572 return s->ctx->cipher_list;
2578 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2580 if ((s == NULL) || !s->server)
2582 return s->peer_ciphers;
2585 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2587 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2590 ciphers = SSL_get_ciphers(s);
2593 if (!ssl_set_client_disabled(s))
2595 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2596 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2597 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2599 sk = sk_SSL_CIPHER_new_null();
2602 if (!sk_SSL_CIPHER_push(sk, c)) {
2603 sk_SSL_CIPHER_free(sk);
2611 /** return a STACK of the ciphers available for the SSL and in order of
2613 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2616 if (s->cipher_list_by_id != NULL) {
2617 return s->cipher_list_by_id;
2618 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2619 return s->ctx->cipher_list_by_id;
2625 /** The old interface to get the same thing as SSL_get_ciphers() */
2626 const char *SSL_get_cipher_list(const SSL *s, int n)
2628 const SSL_CIPHER *c;
2629 STACK_OF(SSL_CIPHER) *sk;
2633 sk = SSL_get_ciphers(s);
2634 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2636 c = sk_SSL_CIPHER_value(sk, n);
2642 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2644 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2647 return ctx->cipher_list;
2652 * Distinguish between ciphers controlled by set_ciphersuite() and
2653 * set_cipher_list() when counting.
2655 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2658 const SSL_CIPHER *c;
2662 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2663 c = sk_SSL_CIPHER_value(sk, i);
2664 if (c->min_tls >= TLS1_3_VERSION)
2671 /** specify the ciphers to be used by default by the SSL_CTX */
2672 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2674 STACK_OF(SSL_CIPHER) *sk;
2676 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2677 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2680 * ssl_create_cipher_list may return an empty stack if it was unable to
2681 * find a cipher matching the given rule string (for example if the rule
2682 * string specifies a cipher which has been disabled). This is not an
2683 * error as far as ssl_create_cipher_list is concerned, and hence
2684 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2688 else if (cipher_list_tls12_num(sk) == 0) {
2689 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2695 /** specify the ciphers to be used by the SSL */
2696 int SSL_set_cipher_list(SSL *s, const char *str)
2698 STACK_OF(SSL_CIPHER) *sk;
2700 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2701 &s->cipher_list, &s->cipher_list_by_id, str,
2703 /* see comment in SSL_CTX_set_cipher_list */
2706 else if (cipher_list_tls12_num(sk) == 0) {
2707 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2713 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2716 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2717 const SSL_CIPHER *c;
2721 || s->peer_ciphers == NULL
2726 clntsk = s->peer_ciphers;
2727 srvrsk = SSL_get_ciphers(s);
2728 if (clntsk == NULL || srvrsk == NULL)
2731 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2734 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2737 c = sk_SSL_CIPHER_value(clntsk, i);
2738 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2741 n = strlen(c->name);
2758 * Return the requested servername (SNI) value. Note that the behaviour varies
2760 * - whether this is called by the client or the server,
2761 * - if we are before or during/after the handshake,
2762 * - if a resumption or normal handshake is being attempted/has occurred
2763 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2765 * Note that only the host_name type is defined (RFC 3546).
2767 const char *SSL_get_servername(const SSL *s, const int type)
2770 * If we don't know if we are the client or the server yet then we assume
2773 int server = s->handshake_func == NULL ? 0 : s->server;
2774 if (type != TLSEXT_NAMETYPE_host_name)
2780 * In TLSv1.3 on the server SNI is not associated with the session
2781 * but in TLSv1.2 or below it is.
2783 * Before the handshake:
2786 * During/after the handshake (TLSv1.2 or below resumption occurred):
2787 * - If a servername was accepted by the server in the original
2788 * handshake then it will return that servername, or NULL otherwise.
2790 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2791 * - The function will return the servername requested by the client in
2792 * this handshake or NULL if none was requested.
2794 if (s->hit && !SSL_IS_TLS13(s))
2795 return s->session->ext.hostname;
2800 * Before the handshake:
2801 * - If a servername has been set via a call to
2802 * SSL_set_tlsext_host_name() then it will return that servername
2803 * - If one has not been set, but a TLSv1.2 resumption is being
2804 * attempted and the session from the original handshake had a
2805 * servername accepted by the server then it will return that
2807 * - Otherwise it returns NULL
2809 * During/after the handshake (TLSv1.2 or below resumption occurred):
2810 * - If the session from the orignal handshake had a servername accepted
2811 * by the server then it will return that servername.
2812 * - Otherwise it returns the servername set via
2813 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2815 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2816 * - It will return the servername set via SSL_set_tlsext_host_name()
2817 * (or NULL if it was not called).
2819 if (SSL_in_before(s)) {
2820 if (s->ext.hostname == NULL
2821 && s->session != NULL
2822 && s->session->ssl_version != TLS1_3_VERSION)
2823 return s->session->ext.hostname;
2825 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2826 return s->session->ext.hostname;
2830 return s->ext.hostname;
2833 int SSL_get_servername_type(const SSL *s)
2835 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2836 return TLSEXT_NAMETYPE_host_name;
2841 * SSL_select_next_proto implements the standard protocol selection. It is
2842 * expected that this function is called from the callback set by
2843 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2844 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2845 * not included in the length. A byte string of length 0 is invalid. No byte
2846 * string may be truncated. The current, but experimental algorithm for
2847 * selecting the protocol is: 1) If the server doesn't support NPN then this
2848 * is indicated to the callback. In this case, the client application has to
2849 * abort the connection or have a default application level protocol. 2) If
2850 * the server supports NPN, but advertises an empty list then the client
2851 * selects the first protocol in its list, but indicates via the API that this
2852 * fallback case was enacted. 3) Otherwise, the client finds the first
2853 * protocol in the server's list that it supports and selects this protocol.
2854 * This is because it's assumed that the server has better information about
2855 * which protocol a client should use. 4) If the client doesn't support any
2856 * of the server's advertised protocols, then this is treated the same as
2857 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2858 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2860 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2861 const unsigned char *server,
2862 unsigned int server_len,
2863 const unsigned char *client, unsigned int client_len)
2866 const unsigned char *result;
2867 int status = OPENSSL_NPN_UNSUPPORTED;
2870 * For each protocol in server preference order, see if we support it.
2872 for (i = 0; i < server_len;) {
2873 for (j = 0; j < client_len;) {
2874 if (server[i] == client[j] &&
2875 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2876 /* We found a match */
2877 result = &server[i];
2878 status = OPENSSL_NPN_NEGOTIATED;
2888 /* There's no overlap between our protocols and the server's list. */
2890 status = OPENSSL_NPN_NO_OVERLAP;
2893 *out = (unsigned char *)result + 1;
2894 *outlen = result[0];
2898 #ifndef OPENSSL_NO_NEXTPROTONEG
2900 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2901 * client's requested protocol for this connection and returns 0. If the
2902 * client didn't request any protocol, then *data is set to NULL. Note that
2903 * the client can request any protocol it chooses. The value returned from
2904 * this function need not be a member of the list of supported protocols
2905 * provided by the callback.
2907 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2911 if (*data == NULL) {
2914 *len = (unsigned int)s->ext.npn_len;
2919 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2920 * a TLS server needs a list of supported protocols for Next Protocol
2921 * Negotiation. The returned list must be in wire format. The list is
2922 * returned by setting |out| to point to it and |outlen| to its length. This
2923 * memory will not be modified, but one should assume that the SSL* keeps a
2924 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2925 * wishes to advertise. Otherwise, no such extension will be included in the
2928 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2929 SSL_CTX_npn_advertised_cb_func cb,
2932 ctx->ext.npn_advertised_cb = cb;
2933 ctx->ext.npn_advertised_cb_arg = arg;
2937 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2938 * client needs to select a protocol from the server's provided list. |out|
2939 * must be set to point to the selected protocol (which may be within |in|).
2940 * The length of the protocol name must be written into |outlen|. The
2941 * server's advertised protocols are provided in |in| and |inlen|. The
2942 * callback can assume that |in| is syntactically valid. The client must
2943 * select a protocol. It is fatal to the connection if this callback returns
2944 * a value other than SSL_TLSEXT_ERR_OK.
2946 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2947 SSL_CTX_npn_select_cb_func cb,
2950 ctx->ext.npn_select_cb = cb;
2951 ctx->ext.npn_select_cb_arg = arg;
2956 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2957 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2958 * length-prefixed strings). Returns 0 on success.
2960 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2961 unsigned int protos_len)
2963 OPENSSL_free(ctx->ext.alpn);
2964 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2965 if (ctx->ext.alpn == NULL) {
2966 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2969 ctx->ext.alpn_len = protos_len;
2975 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2976 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2977 * length-prefixed strings). Returns 0 on success.
2979 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2980 unsigned int protos_len)
2982 OPENSSL_free(ssl->ext.alpn);
2983 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2984 if (ssl->ext.alpn == NULL) {
2985 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2988 ssl->ext.alpn_len = protos_len;
2994 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2995 * called during ClientHello processing in order to select an ALPN protocol
2996 * from the client's list of offered protocols.
2998 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2999 SSL_CTX_alpn_select_cb_func cb,
3002 ctx->ext.alpn_select_cb = cb;
3003 ctx->ext.alpn_select_cb_arg = arg;
3007 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3008 * On return it sets |*data| to point to |*len| bytes of protocol name
3009 * (not including the leading length-prefix byte). If the server didn't
3010 * respond with a negotiated protocol then |*len| will be zero.
3012 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3015 *data = ssl->s3.alpn_selected;
3019 *len = (unsigned int)ssl->s3.alpn_selected_len;
3022 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3023 const char *label, size_t llen,
3024 const unsigned char *context, size_t contextlen,
3027 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
3030 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3032 contextlen, use_context);
3035 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3036 const char *label, size_t llen,
3037 const unsigned char *context,
3040 if (s->version != TLS1_3_VERSION)
3043 return tls13_export_keying_material_early(s, out, olen, label, llen,
3044 context, contextlen);
3047 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3049 const unsigned char *session_id = a->session_id;
3051 unsigned char tmp_storage[4];
3053 if (a->session_id_length < sizeof(tmp_storage)) {
3054 memset(tmp_storage, 0, sizeof(tmp_storage));
3055 memcpy(tmp_storage, a->session_id, a->session_id_length);
3056 session_id = tmp_storage;
3060 ((unsigned long)session_id[0]) |
3061 ((unsigned long)session_id[1] << 8L) |
3062 ((unsigned long)session_id[2] << 16L) |
3063 ((unsigned long)session_id[3] << 24L);
3068 * NB: If this function (or indeed the hash function which uses a sort of
3069 * coarser function than this one) is changed, ensure
3070 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3071 * being able to construct an SSL_SESSION that will collide with any existing
3072 * session with a matching session ID.
3074 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3076 if (a->ssl_version != b->ssl_version)
3078 if (a->session_id_length != b->session_id_length)
3080 return memcmp(a->session_id, b->session_id, a->session_id_length);
3084 * These wrapper functions should remain rather than redeclaring
3085 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3086 * variable. The reason is that the functions aren't static, they're exposed
3090 SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3091 const SSL_METHOD *meth)
3093 SSL_CTX *ret = NULL;
3096 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
3100 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3103 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3104 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3107 ret = OPENSSL_zalloc(sizeof(*ret));
3111 ret->libctx = libctx;
3112 if (propq != NULL) {
3113 ret->propq = OPENSSL_strdup(propq);
3114 if (ret->propq == NULL)
3119 ret->min_proto_version = 0;
3120 ret->max_proto_version = 0;
3121 ret->mode = SSL_MODE_AUTO_RETRY;
3122 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3123 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3124 /* We take the system default. */
3125 ret->session_timeout = meth->get_timeout();
3126 ret->references = 1;
3127 ret->lock = CRYPTO_THREAD_lock_new();
3128 if (ret->lock == NULL) {
3129 SSLerr(0, ERR_R_MALLOC_FAILURE);
3133 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3134 ret->verify_mode = SSL_VERIFY_NONE;
3135 if ((ret->cert = ssl_cert_new()) == NULL)
3138 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3139 if (ret->sessions == NULL)
3141 ret->cert_store = X509_STORE_new();
3142 if (ret->cert_store == NULL)
3144 #ifndef OPENSSL_NO_CT
3145 ret->ctlog_store = CTLOG_STORE_new_with_libctx(libctx, propq);
3146 if (ret->ctlog_store == NULL)
3150 /* initialize cipher/digest methods table */
3151 if (!ssl_load_ciphers(ret))
3153 /* initialise sig algs */
3154 if (!ssl_setup_sig_algs(ret))
3158 if (!ssl_load_groups(ret))
3161 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3164 if (!ssl_create_cipher_list(ret->method,
3165 ret->tls13_ciphersuites,
3166 &ret->cipher_list, &ret->cipher_list_by_id,
3167 OSSL_default_cipher_list(), ret->cert)
3168 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3169 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3173 ret->param = X509_VERIFY_PARAM_new();
3174 if (ret->param == NULL)
3178 * If these aren't available from the provider we'll get NULL returns.
3179 * That's fine but will cause errors later if SSLv3 is negotiated
3181 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3182 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3184 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3187 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3190 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3193 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3196 /* No compression for DTLS */
3197 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3198 ret->comp_methods = SSL_COMP_get_compression_methods();
3200 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3201 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3203 /* Setup RFC5077 ticket keys */
3204 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3205 sizeof(ret->ext.tick_key_name)) <= 0)
3206 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3207 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3208 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3209 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3210 ret->options |= SSL_OP_NO_TICKET;
3212 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3213 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3216 #ifndef OPENSSL_NO_SRP
3217 if (!SSL_CTX_SRP_CTX_init(ret))
3220 #ifndef OPENSSL_NO_ENGINE
3221 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3222 # define eng_strx(x) #x
3223 # define eng_str(x) eng_strx(x)
3224 /* Use specific client engine automatically... ignore errors */
3227 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3230 ENGINE_load_builtin_engines();
3231 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3233 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3239 * Default is to connect to non-RI servers. When RI is more widely
3240 * deployed might change this.
3242 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3244 * Disable compression by default to prevent CRIME. Applications can
3245 * re-enable compression by configuring
3246 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3247 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3248 * middlebox compatibility by default. This may be disabled by default in
3249 * a later OpenSSL version.
3251 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3253 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3256 * We cannot usefully set a default max_early_data here (which gets
3257 * propagated in SSL_new(), for the following reason: setting the
3258 * SSL field causes tls_construct_stoc_early_data() to tell the
3259 * client that early data will be accepted when constructing a TLS 1.3
3260 * session ticket, and the client will accordingly send us early data
3261 * when using that ticket (if the client has early data to send).
3262 * However, in order for the early data to actually be consumed by
3263 * the application, the application must also have calls to
3264 * SSL_read_early_data(); otherwise we'll just skip past the early data
3265 * and ignore it. So, since the application must add calls to
3266 * SSL_read_early_data(), we also require them to add
3267 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3268 * eliminating the bandwidth-wasting early data in the case described
3271 ret->max_early_data = 0;
3274 * Default recv_max_early_data is a fully loaded single record. Could be
3275 * split across multiple records in practice. We set this differently to
3276 * max_early_data so that, in the default case, we do not advertise any
3277 * support for early_data, but if a client were to send us some (e.g.
3278 * because of an old, stale ticket) then we will tolerate it and skip over
3281 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3283 /* By default we send two session tickets automatically in TLSv1.3 */
3284 ret->num_tickets = 2;
3286 ssl_ctx_system_config(ret);
3290 SSLerr(0, ERR_R_MALLOC_FAILURE);
3296 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3298 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3301 int SSL_CTX_up_ref(SSL_CTX *ctx)
3305 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3308 REF_PRINT_COUNT("SSL_CTX", ctx);
3309 REF_ASSERT_ISNT(i < 2);
3310 return ((i > 1) ? 1 : 0);
3313 void SSL_CTX_free(SSL_CTX *a)
3321 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3322 REF_PRINT_COUNT("SSL_CTX", a);
3325 REF_ASSERT_ISNT(i < 0);
3327 X509_VERIFY_PARAM_free(a->param);
3328 dane_ctx_final(&a->dane);
3331 * Free internal session cache. However: the remove_cb() may reference
3332 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3333 * after the sessions were flushed.
3334 * As the ex_data handling routines might also touch the session cache,
3335 * the most secure solution seems to be: empty (flush) the cache, then
3336 * free ex_data, then finally free the cache.
3337 * (See ticket [openssl.org #212].)
3339 if (a->sessions != NULL)
3340 SSL_CTX_flush_sessions(a, 0);
3342 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3343 lh_SSL_SESSION_free(a->sessions);
3344 X509_STORE_free(a->cert_store);
3345 #ifndef OPENSSL_NO_CT
3346 CTLOG_STORE_free(a->ctlog_store);
3348 sk_SSL_CIPHER_free(a->cipher_list);
3349 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3350 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3351 ssl_cert_free(a->cert);
3352 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3353 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3354 sk_X509_pop_free(a->extra_certs, X509_free);
3355 a->comp_methods = NULL;
3356 #ifndef OPENSSL_NO_SRTP
3357 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3359 #ifndef OPENSSL_NO_SRP
3360 SSL_CTX_SRP_CTX_free(a);
3362 #ifndef OPENSSL_NO_ENGINE
3363 ENGINE_finish(a->client_cert_engine);
3366 #ifndef OPENSSL_NO_EC
3367 OPENSSL_free(a->ext.ecpointformats);
3369 OPENSSL_free(a->ext.supportedgroups);
3370 OPENSSL_free(a->ext.alpn);
3371 OPENSSL_secure_free(a->ext.secure);
3373 ssl_evp_md_free(a->md5);
3374 ssl_evp_md_free(a->sha1);
3376 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3377 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3378 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3379 ssl_evp_md_free(a->ssl_digest_methods[j]);
3380 for (j = 0; j < a->group_list_len; j++) {
3381 OPENSSL_free(a->group_list[j].tlsname);
3382 OPENSSL_free(a->group_list[j].realname);
3383 OPENSSL_free(a->group_list[j].algorithm);
3385 OPENSSL_free(a->group_list);
3387 OPENSSL_free(a->sigalg_lookup_cache);
3389 CRYPTO_THREAD_lock_free(a->lock);
3391 OPENSSL_free(a->propq);
3396 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3398 ctx->default_passwd_callback = cb;
3401 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3403 ctx->default_passwd_callback_userdata = u;
3406 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3408 return ctx->default_passwd_callback;
3411 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3413 return ctx->default_passwd_callback_userdata;
3416 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3418 s->default_passwd_callback = cb;
3421 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3423 s->default_passwd_callback_userdata = u;
3426 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3428 return s->default_passwd_callback;
3431 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3433 return s->default_passwd_callback_userdata;
3436 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3437 int (*cb) (X509_STORE_CTX *, void *),
3440 ctx->app_verify_callback = cb;
3441 ctx->app_verify_arg = arg;
3444 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3445 int (*cb) (int, X509_STORE_CTX *))
3447 ctx->verify_mode = mode;
3448 ctx->default_verify_callback = cb;
3451 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3453 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3456 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3458 ssl_cert_set_cert_cb(c->cert, cb, arg);
3461 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3463 ssl_cert_set_cert_cb(s->cert, cb, arg);
3466 void ssl_set_masks(SSL *s)
3469 uint32_t *pvalid = s->s3.tmp.valid_flags;
3470 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3471 unsigned long mask_k, mask_a;
3472 #ifndef OPENSSL_NO_EC
3473 int have_ecc_cert, ecdsa_ok;
3478 #ifndef OPENSSL_NO_DH
3479 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3484 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3485 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3486 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3487 #ifndef OPENSSL_NO_EC
3488 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3493 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3494 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3496 #ifndef OPENSSL_NO_GOST
3497 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3498 mask_k |= SSL_kGOST | SSL_kGOST18;
3499 mask_a |= SSL_aGOST12;
3501 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3502 mask_k |= SSL_kGOST | SSL_kGOST18;
3503 mask_a |= SSL_aGOST12;
3505 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3506 mask_k |= SSL_kGOST;
3507 mask_a |= SSL_aGOST01;
3518 * If we only have an RSA-PSS certificate allow RSA authentication
3519 * if TLS 1.2 and peer supports it.
3522 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3523 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3524 && TLS1_get_version(s) == TLS1_2_VERSION))
3531 mask_a |= SSL_aNULL;
3534 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3535 * depending on the key usage extension.
3537 #ifndef OPENSSL_NO_EC
3538 if (have_ecc_cert) {
3540 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3541 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3542 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3545 mask_a |= SSL_aECDSA;
3547 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3548 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3549 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3550 && TLS1_get_version(s) == TLS1_2_VERSION)
3551 mask_a |= SSL_aECDSA;
3553 /* Allow Ed448 for TLS 1.2 if peer supports it */
3554 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3555 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3556 && TLS1_get_version(s) == TLS1_2_VERSION)
3557 mask_a |= SSL_aECDSA;
3560 #ifndef OPENSSL_NO_EC
3561 mask_k |= SSL_kECDHE;
3564 #ifndef OPENSSL_NO_PSK
3567 if (mask_k & SSL_kRSA)
3568 mask_k |= SSL_kRSAPSK;
3569 if (mask_k & SSL_kDHE)
3570 mask_k |= SSL_kDHEPSK;
3571 if (mask_k & SSL_kECDHE)
3572 mask_k |= SSL_kECDHEPSK;
3575 s->s3.tmp.mask_k = mask_k;
3576 s->s3.tmp.mask_a = mask_a;
3579 #ifndef OPENSSL_NO_EC
3581 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3583 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3584 /* key usage, if present, must allow signing */
3585 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3586 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3587 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3591 return 1; /* all checks are ok */
3596 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3597 size_t *serverinfo_length)
3599 CERT_PKEY *cpk = s->s3.tmp.cert;
3600 *serverinfo_length = 0;
3602 if (cpk == NULL || cpk->serverinfo == NULL)
3605 *serverinfo = cpk->serverinfo;
3606 *serverinfo_length = cpk->serverinfo_length;
3610 void ssl_update_cache(SSL *s, int mode)
3615 * If the session_id_length is 0, we are not supposed to cache it, and it
3616 * would be rather hard to do anyway :-)
3618 if (s->session->session_id_length == 0)
3622 * If sid_ctx_length is 0 there is no specific application context
3623 * associated with this session, so when we try to resume it and
3624 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3625 * indication that this is actually a session for the proper application
3626 * context, and the *handshake* will fail, not just the resumption attempt.
3627 * Do not cache (on the server) these sessions that are not resumable
3628 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3630 if (s->server && s->session->sid_ctx_length == 0
3631 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3634 i = s->session_ctx->session_cache_mode;
3636 && (!s->hit || SSL_IS_TLS13(s))) {
3638 * Add the session to the internal cache. In server side TLSv1.3 we
3639 * normally don't do this because by default it's a full stateless ticket
3640 * with only a dummy session id so there is no reason to cache it,
3642 * - we are doing early_data, in which case we cache so that we can
3644 * - the application has set a remove_session_cb so needs to know about
3645 * session timeout events
3646 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3648 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3649 && (!SSL_IS_TLS13(s)
3651 || (s->max_early_data > 0
3652 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3653 || s->session_ctx->remove_session_cb != NULL
3654 || (s->options & SSL_OP_NO_TICKET) != 0))
3655 SSL_CTX_add_session(s->session_ctx, s->session);
3658 * Add the session to the external cache. We do this even in server side
3659 * TLSv1.3 without early data because some applications just want to
3660 * know about the creation of a session and aren't doing a full cache.
3662 if (s->session_ctx->new_session_cb != NULL) {
3663 SSL_SESSION_up_ref(s->session);
3664 if (!s->session_ctx->new_session_cb(s, s->session))
3665 SSL_SESSION_free(s->session);
3669 /* auto flush every 255 connections */
3670 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3671 TSAN_QUALIFIER int *stat;
3672 if (mode & SSL_SESS_CACHE_CLIENT)
3673 stat = &s->session_ctx->stats.sess_connect_good;
3675 stat = &s->session_ctx->stats.sess_accept_good;
3676 if ((tsan_load(stat) & 0xff) == 0xff)
3677 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3681 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3686 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3691 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3695 if (s->method != meth) {
3696 const SSL_METHOD *sm = s->method;
3697 int (*hf) (SSL *) = s->handshake_func;
3699 if (sm->version == meth->version)
3704 ret = s->method->ssl_new(s);
3707 if (hf == sm->ssl_connect)
3708 s->handshake_func = meth->ssl_connect;
3709 else if (hf == sm->ssl_accept)
3710 s->handshake_func = meth->ssl_accept;
3715 int SSL_get_error(const SSL *s, int i)
3722 return SSL_ERROR_NONE;
3725 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3726 * where we do encode the error
3728 if ((l = ERR_peek_error()) != 0) {
3729 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3730 return SSL_ERROR_SYSCALL;
3732 return SSL_ERROR_SSL;
3735 if (SSL_want_read(s)) {
3736 bio = SSL_get_rbio(s);
3737 if (BIO_should_read(bio))
3738 return SSL_ERROR_WANT_READ;
3739 else if (BIO_should_write(bio))
3741 * This one doesn't make too much sense ... We never try to write
3742 * to the rbio, and an application program where rbio and wbio
3743 * are separate couldn't even know what it should wait for.
3744 * However if we ever set s->rwstate incorrectly (so that we have
3745 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3746 * wbio *are* the same, this test works around that bug; so it
3747 * might be safer to keep it.
3749 return SSL_ERROR_WANT_WRITE;
3750 else if (BIO_should_io_special(bio)) {
3751 reason = BIO_get_retry_reason(bio);
3752 if (reason == BIO_RR_CONNECT)
3753 return SSL_ERROR_WANT_CONNECT;
3754 else if (reason == BIO_RR_ACCEPT)
3755 return SSL_ERROR_WANT_ACCEPT;
3757 return SSL_ERROR_SYSCALL; /* unknown */
3761 if (SSL_want_write(s)) {
3762 /* Access wbio directly - in order to use the buffered bio if present */
3764 if (BIO_should_write(bio))
3765 return SSL_ERROR_WANT_WRITE;
3766 else if (BIO_should_read(bio))
3768 * See above (SSL_want_read(s) with BIO_should_write(bio))
3770 return SSL_ERROR_WANT_READ;
3771 else if (BIO_should_io_special(bio)) {
3772 reason = BIO_get_retry_reason(bio);
3773 if (reason == BIO_RR_CONNECT)
3774 return SSL_ERROR_WANT_CONNECT;
3775 else if (reason == BIO_RR_ACCEPT)
3776 return SSL_ERROR_WANT_ACCEPT;
3778 return SSL_ERROR_SYSCALL;
3781 if (SSL_want_x509_lookup(s))
3782 return SSL_ERROR_WANT_X509_LOOKUP;
3783 if (SSL_want_async(s))
3784 return SSL_ERROR_WANT_ASYNC;
3785 if (SSL_want_async_job(s))
3786 return SSL_ERROR_WANT_ASYNC_JOB;
3787 if (SSL_want_client_hello_cb(s))
3788 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3790 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3791 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3792 return SSL_ERROR_ZERO_RETURN;
3794 return SSL_ERROR_SYSCALL;
3797 static int ssl_do_handshake_intern(void *vargs)
3799 struct ssl_async_args *args;
3802 args = (struct ssl_async_args *)vargs;
3805 return s->handshake_func(s);
3808 int SSL_do_handshake(SSL *s)
3812 if (s->handshake_func == NULL) {
3813 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3817 ossl_statem_check_finish_init(s, -1);
3819 s->method->ssl_renegotiate_check(s, 0);
3821 if (SSL_in_init(s) || SSL_in_before(s)) {
3822 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3823 struct ssl_async_args args;
3827 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3829 ret = s->handshake_func(s);
3835 void SSL_set_accept_state(SSL *s)
3839 ossl_statem_clear(s);
3840 s->handshake_func = s->method->ssl_accept;
3844 void SSL_set_connect_state(SSL *s)
3848 ossl_statem_clear(s);
3849 s->handshake_func = s->method->ssl_connect;
3853 int ssl_undefined_function(SSL *s)
3855 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3859 int ssl_undefined_void_function(void)
3861 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3862 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3866 int ssl_undefined_const_function(const SSL *s)
3871 const SSL_METHOD *ssl_bad_method(int ver)
3873 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3877 const char *ssl_protocol_to_string(int version)
3881 case TLS1_3_VERSION:
3884 case TLS1_2_VERSION:
3887 case TLS1_1_VERSION:
3902 case DTLS1_2_VERSION:
3910 const char *SSL_get_version(const SSL *s)
3912 return ssl_protocol_to_string(s->version);
3915 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3917 STACK_OF(X509_NAME) *sk;
3926 if ((sk = sk_X509_NAME_new_null()) == NULL)
3928 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3929 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3931 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3934 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3936 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3945 SSL *SSL_dup(SSL *s)
3950 /* If we're not quiescent, just up_ref! */
3951 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3952 CRYPTO_UP_REF(&s->references, &i, s->lock);
3957 * Otherwise, copy configuration state, and session if set.
3959 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3962 if (s->session != NULL) {
3964 * Arranges to share the same session via up_ref. This "copies"
3965 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3967 if (!SSL_copy_session_id(ret, s))
3971 * No session has been established yet, so we have to expect that
3972 * s->cert or ret->cert will be changed later -- they should not both
3973 * point to the same object, and thus we can't use
3974 * SSL_copy_session_id.
3976 if (!SSL_set_ssl_method(ret, s->method))
3979 if (s->cert != NULL) {
3980 ssl_cert_free(ret->cert);
3981 ret->cert = ssl_cert_dup(s->cert);
3982 if (ret->cert == NULL)
3986 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3987 (int)s->sid_ctx_length))
3991 if (!ssl_dane_dup(ret, s))
3993 ret->version = s->version;
3994 ret->options = s->options;
3995 ret->min_proto_version = s->min_proto_version;
3996 ret->max_proto_version = s->max_proto_version;
3997 ret->mode = s->mode;
3998 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3999 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4000 ret->msg_callback = s->msg_callback;
4001 ret->msg_callback_arg = s->msg_callback_arg;
4002 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4003 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4004 ret->generate_session_id = s->generate_session_id;
4006 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4008 /* copy app data, a little dangerous perhaps */
4009 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4012 ret->server = s->server;
4013 if (s->handshake_func) {
4015 SSL_set_accept_state(ret);
4017 SSL_set_connect_state(ret);
4019 ret->shutdown = s->shutdown;
4022 ret->default_passwd_callback = s->default_passwd_callback;
4023 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4025 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4027 /* dup the cipher_list and cipher_list_by_id stacks */
4028 if (s->cipher_list != NULL) {
4029 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4032 if (s->cipher_list_by_id != NULL)
4033 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4037 /* Dup the client_CA list */
4038 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4039 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4049 void ssl_clear_cipher_ctx(SSL *s)
4051 if (s->enc_read_ctx != NULL) {
4052 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4053 s->enc_read_ctx = NULL;
4055 if (s->enc_write_ctx != NULL) {
4056 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4057 s->enc_write_ctx = NULL;
4059 #ifndef OPENSSL_NO_COMP
4060 COMP_CTX_free(s->expand);
4062 COMP_CTX_free(s->compress);
4067 X509 *SSL_get_certificate(const SSL *s)
4069 if (s->cert != NULL)
4070 return s->cert->key->x509;
4075 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4077 if (s->cert != NULL)
4078 return s->cert->key->privatekey;
4083 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4085 if (ctx->cert != NULL)
4086 return ctx->cert->key->x509;
4091 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4093 if (ctx->cert != NULL)
4094 return ctx->cert->key->privatekey;
4099 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4101 if ((s->session != NULL) && (s->session->cipher != NULL))
4102 return s->session->cipher;
4106 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4108 return s->s3.tmp.new_cipher;
4111 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4113 #ifndef OPENSSL_NO_COMP
4114 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4120 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4122 #ifndef OPENSSL_NO_COMP
4123 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4129 int ssl_init_wbio_buffer(SSL *s)
4133 if (s->bbio != NULL) {
4134 /* Already buffered. */
4138 bbio = BIO_new(BIO_f_buffer());
4139 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4141 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4145 s->wbio = BIO_push(bbio, s->wbio);
4150 int ssl_free_wbio_buffer(SSL *s)
4152 /* callers ensure s is never null */
4153 if (s->bbio == NULL)
4156 s->wbio = BIO_pop(s->wbio);
4163 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4165 ctx->quiet_shutdown = mode;
4168 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4170 return ctx->quiet_shutdown;
4173 void SSL_set_quiet_shutdown(SSL *s, int mode)
4175 s->quiet_shutdown = mode;
4178 int SSL_get_quiet_shutdown(const SSL *s)
4180 return s->quiet_shutdown;
4183 void SSL_set_shutdown(SSL *s, int mode)
4188 int SSL_get_shutdown(const SSL *s)
4193 int SSL_version(const SSL *s)
4198 int SSL_client_version(const SSL *s)
4200 return s->client_version;
4203 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4208 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4211 if (ssl->ctx == ctx)
4214 ctx = ssl->session_ctx;
4215 new_cert = ssl_cert_dup(ctx->cert);
4216 if (new_cert == NULL) {
4220 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4221 ssl_cert_free(new_cert);
4225 ssl_cert_free(ssl->cert);
4226 ssl->cert = new_cert;
4229 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4230 * so setter APIs must prevent invalid lengths from entering the system.
4232 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4236 * If the session ID context matches that of the parent SSL_CTX,
4237 * inherit it from the new SSL_CTX as well. If however the context does
4238 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4239 * leave it unchanged.
4241 if ((ssl->ctx != NULL) &&
4242 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4243 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4244 ssl->sid_ctx_length = ctx->sid_ctx_length;
4245 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4248 SSL_CTX_up_ref(ctx);
4249 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4255 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4257 return X509_STORE_set_default_paths(ctx->cert_store);
4260 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4262 X509_LOOKUP *lookup;
4264 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4268 /* We ignore errors, in case the directory doesn't exist */
4271 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4278 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4280 X509_LOOKUP *lookup;
4282 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4286 /* We ignore errors, in case the directory doesn't exist */
4289 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4296 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4298 X509_LOOKUP *lookup;
4300 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4304 /* We ignore errors, in case the directory doesn't exist */
4307 X509_LOOKUP_add_store(lookup, NULL);
4314 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4316 return X509_STORE_load_file(ctx->cert_store, CAfile);
4319 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4321 return X509_STORE_load_path(ctx->cert_store, CApath);
4324 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4326 return X509_STORE_load_store(ctx->cert_store, CAstore);
4329 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4332 if (CAfile == NULL && CApath == NULL)
4334 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4336 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4341 void SSL_set_info_callback(SSL *ssl,
4342 void (*cb) (const SSL *ssl, int type, int val))
4344 ssl->info_callback = cb;
4348 * One compiler (Diab DCC) doesn't like argument names in returned function
4351 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4354 return ssl->info_callback;
4357 void SSL_set_verify_result(SSL *ssl, long arg)
4359 ssl->verify_result = arg;
4362 long SSL_get_verify_result(const SSL *ssl)
4364 return ssl->verify_result;
4367 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4370 return sizeof(ssl->s3.client_random);
4371 if (outlen > sizeof(ssl->s3.client_random))
4372 outlen = sizeof(ssl->s3.client_random);
4373 memcpy(out, ssl->s3.client_random, outlen);
4377 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4380 return sizeof(ssl->s3.server_random);
4381 if (outlen > sizeof(ssl->s3.server_random))
4382 outlen = sizeof(ssl->s3.server_random);
4383 memcpy(out, ssl->s3.server_random, outlen);
4387 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4388 unsigned char *out, size_t outlen)
4391 return session->master_key_length;
4392 if (outlen > session->master_key_length)
4393 outlen = session->master_key_length;
4394 memcpy(out, session->master_key, outlen);
4398 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4401 if (len > sizeof(sess->master_key))
4404 memcpy(sess->master_key, in, len);
4405 sess->master_key_length = len;
4410 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4412 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4415 void *SSL_get_ex_data(const SSL *s, int idx)
4417 return CRYPTO_get_ex_data(&s->ex_data, idx);
4420 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4422 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4425 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4427 return CRYPTO_get_ex_data(&s->ex_data, idx);
4430 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4432 return ctx->cert_store;
4435 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4437 X509_STORE_free(ctx->cert_store);
4438 ctx->cert_store = store;
4441 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4444 X509_STORE_up_ref(store);
4445 SSL_CTX_set_cert_store(ctx, store);
4448 int SSL_want(const SSL *s)
4454 * \brief Set the callback for generating temporary DH keys.
4455 * \param ctx the SSL context.
4456 * \param dh the callback
4459 #ifndef OPENSSL_NO_DH
4460 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4461 DH *(*dh) (SSL *ssl, int is_export,
4464 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4467 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4470 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4474 #ifndef OPENSSL_NO_PSK
4475 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4477 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4478 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4481 OPENSSL_free(ctx->cert->psk_identity_hint);
4482 if (identity_hint != NULL) {
4483 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4484 if (ctx->cert->psk_identity_hint == NULL)
4487 ctx->cert->psk_identity_hint = NULL;
4491 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4496 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4497 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4500 OPENSSL_free(s->cert->psk_identity_hint);
4501 if (identity_hint != NULL) {
4502 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4503 if (s->cert->psk_identity_hint == NULL)
4506 s->cert->psk_identity_hint = NULL;
4510 const char *SSL_get_psk_identity_hint(const SSL *s)
4512 if (s == NULL || s->session == NULL)
4514 return s->session->psk_identity_hint;
4517 const char *SSL_get_psk_identity(const SSL *s)
4519 if (s == NULL || s->session == NULL)
4521 return s->session->psk_identity;
4524 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4526 s->psk_client_callback = cb;
4529 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4531 ctx->psk_client_callback = cb;
4534 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4536 s->psk_server_callback = cb;
4539 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4541 ctx->psk_server_callback = cb;
4545 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4547 s->psk_find_session_cb = cb;
4550 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4551 SSL_psk_find_session_cb_func cb)
4553 ctx->psk_find_session_cb = cb;
4556 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4558 s->psk_use_session_cb = cb;
4561 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4562 SSL_psk_use_session_cb_func cb)
4564 ctx->psk_use_session_cb = cb;
4567 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4568 void (*cb) (int write_p, int version,
4569 int content_type, const void *buf,
4570 size_t len, SSL *ssl, void *arg))
4572 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4575 void SSL_set_msg_callback(SSL *ssl,
4576 void (*cb) (int write_p, int version,
4577 int content_type, const void *buf,
4578 size_t len, SSL *ssl, void *arg))
4580 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4583 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4584 int (*cb) (SSL *ssl,
4588 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4589 (void (*)(void))cb);
4592 void SSL_set_not_resumable_session_callback(SSL *ssl,
4593 int (*cb) (SSL *ssl,
4594 int is_forward_secure))
4596 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4597 (void (*)(void))cb);
4600 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4601 size_t (*cb) (SSL *ssl, int type,
4602 size_t len, void *arg))
4604 ctx->record_padding_cb = cb;
4607 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4609 ctx->record_padding_arg = arg;
4612 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4614 return ctx->record_padding_arg;
4617 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4619 /* block size of 0 or 1 is basically no padding */
4620 if (block_size == 1)
4621 ctx->block_padding = 0;
4622 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4623 ctx->block_padding = block_size;
4629 int SSL_set_record_padding_callback(SSL *ssl,
4630 size_t (*cb) (SSL *ssl, int type,
4631 size_t len, void *arg))
4635 b = SSL_get_wbio(ssl);
4636 if (b == NULL || !BIO_get_ktls_send(b)) {
4637 ssl->record_padding_cb = cb;
4643 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4645 ssl->record_padding_arg = arg;
4648 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4650 return ssl->record_padding_arg;
4653 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4655 /* block size of 0 or 1 is basically no padding */
4656 if (block_size == 1)
4657 ssl->block_padding = 0;
4658 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4659 ssl->block_padding = block_size;
4665 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4667 s->num_tickets = num_tickets;
4672 size_t SSL_get_num_tickets(const SSL *s)
4674 return s->num_tickets;
4677 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4679 ctx->num_tickets = num_tickets;
4684 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4686 return ctx->num_tickets;
4690 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4691 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4692 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4693 * Returns the newly allocated ctx;
4696 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4698 ssl_clear_hash_ctx(hash);
4699 *hash = EVP_MD_CTX_new();
4700 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4701 EVP_MD_CTX_free(*hash);
4708 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4711 EVP_MD_CTX_free(*hash);
4715 /* Retrieve handshake hashes */
4716 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4719 EVP_MD_CTX *ctx = NULL;
4720 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4721 int hashleni = EVP_MD_CTX_size(hdgst);
4724 if (hashleni < 0 || (size_t)hashleni > outlen) {
4725 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4726 ERR_R_INTERNAL_ERROR);
4730 ctx = EVP_MD_CTX_new();
4734 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4735 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4736 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4737 ERR_R_INTERNAL_ERROR);
4741 *hashlen = hashleni;
4745 EVP_MD_CTX_free(ctx);
4749 int SSL_session_reused(const SSL *s)
4754 int SSL_is_server(const SSL *s)
4759 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4760 void SSL_set_debug(SSL *s, int debug)
4762 /* Old function was do-nothing anyway... */
4768 void SSL_set_security_level(SSL *s, int level)
4770 s->cert->sec_level = level;
4773 int SSL_get_security_level(const SSL *s)
4775 return s->cert->sec_level;
4778 void SSL_set_security_callback(SSL *s,
4779 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4780 int op, int bits, int nid,
4781 void *other, void *ex))
4783 s->cert->sec_cb = cb;
4786 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4787 const SSL_CTX *ctx, int op,
4788 int bits, int nid, void *other,
4790 return s->cert->sec_cb;
4793 void SSL_set0_security_ex_data(SSL *s, void *ex)
4795 s->cert->sec_ex = ex;
4798 void *SSL_get0_security_ex_data(const SSL *s)
4800 return s->cert->sec_ex;
4803 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4805 ctx->cert->sec_level = level;
4808 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4810 return ctx->cert->sec_level;
4813 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4814 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4815 int op, int bits, int nid,
4816 void *other, void *ex))
4818 ctx->cert->sec_cb = cb;
4821 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4827 return ctx->cert->sec_cb;
4830 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4832 ctx->cert->sec_ex = ex;
4835 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4837 return ctx->cert->sec_ex;
4841 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4842 * can return unsigned long, instead of the generic long return value from the
4843 * control interface.
4845 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4847 return ctx->options;
4850 unsigned long SSL_get_options(const SSL *s)
4855 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4857 return ctx->options |= op;
4860 unsigned long SSL_set_options(SSL *s, unsigned long op)
4862 return s->options |= op;
4865 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4867 return ctx->options &= ~op;
4870 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4872 return s->options &= ~op;
4875 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4877 return s->verified_chain;
4880 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4882 #ifndef OPENSSL_NO_CT
4885 * Moves SCTs from the |src| stack to the |dst| stack.
4886 * The source of each SCT will be set to |origin|.
4887 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4889 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4891 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4892 sct_source_t origin)
4898 *dst = sk_SCT_new_null();
4900 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4905 while ((sct = sk_SCT_pop(src)) != NULL) {
4906 if (SCT_set_source(sct, origin) != 1)
4909 if (sk_SCT_push(*dst, sct) <= 0)
4917 sk_SCT_push(src, sct); /* Put the SCT back */
4922 * Look for data collected during ServerHello and parse if found.
4923 * Returns the number of SCTs extracted.
4925 static int ct_extract_tls_extension_scts(SSL *s)
4927 int scts_extracted = 0;
4929 if (s->ext.scts != NULL) {
4930 const unsigned char *p = s->ext.scts;
4931 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4933 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4935 SCT_LIST_free(scts);
4938 return scts_extracted;
4942 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4943 * contains an SCT X509 extension. They will be stored in |s->scts|.
4945 * - The number of SCTs extracted, assuming an OCSP response exists.
4946 * - 0 if no OCSP response exists or it contains no SCTs.
4947 * - A negative integer if an error occurs.
4949 static int ct_extract_ocsp_response_scts(SSL *s)
4951 # ifndef OPENSSL_NO_OCSP
4952 int scts_extracted = 0;
4953 const unsigned char *p;
4954 OCSP_BASICRESP *br = NULL;
4955 OCSP_RESPONSE *rsp = NULL;
4956 STACK_OF(SCT) *scts = NULL;
4959 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4962 p = s->ext.ocsp.resp;
4963 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4967 br = OCSP_response_get1_basic(rsp);
4971 for (i = 0; i < OCSP_resp_count(br); ++i) {
4972 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4978 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4980 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4981 if (scts_extracted < 0)
4985 SCT_LIST_free(scts);
4986 OCSP_BASICRESP_free(br);
4987 OCSP_RESPONSE_free(rsp);
4988 return scts_extracted;
4990 /* Behave as if no OCSP response exists */
4996 * Attempts to extract SCTs from the peer certificate.
4997 * Return the number of SCTs extracted, or a negative integer if an error
5000 static int ct_extract_x509v3_extension_scts(SSL *s)
5002 int scts_extracted = 0;
5003 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5006 STACK_OF(SCT) *scts =
5007 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5010 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5012 SCT_LIST_free(scts);
5015 return scts_extracted;
5019 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5020 * response (if it exists) and X509v3 extensions in the certificate.
5021 * Returns NULL if an error occurs.
5023 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5025 if (!s->scts_parsed) {
5026 if (ct_extract_tls_extension_scts(s) < 0 ||
5027 ct_extract_ocsp_response_scts(s) < 0 ||
5028 ct_extract_x509v3_extension_scts(s) < 0)
5038 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5039 const STACK_OF(SCT) *scts, void *unused_arg)
5044 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5045 const STACK_OF(SCT) *scts, void *unused_arg)
5047 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5050 for (i = 0; i < count; ++i) {
5051 SCT *sct = sk_SCT_value(scts, i);
5052 int status = SCT_get_validation_status(sct);
5054 if (status == SCT_VALIDATION_STATUS_VALID)
5057 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5061 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5065 * Since code exists that uses the custom extension handler for CT, look
5066 * for this and throw an error if they have already registered to use CT.
5068 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5069 TLSEXT_TYPE_signed_certificate_timestamp))
5071 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5072 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5076 if (callback != NULL) {
5078 * If we are validating CT, then we MUST accept SCTs served via OCSP
5080 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5084 s->ct_validation_callback = callback;
5085 s->ct_validation_callback_arg = arg;
5090 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5091 ssl_ct_validation_cb callback, void *arg)
5094 * Since code exists that uses the custom extension handler for CT, look for
5095 * this and throw an error if they have already registered to use CT.
5097 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5098 TLSEXT_TYPE_signed_certificate_timestamp))
5100 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5101 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5105 ctx->ct_validation_callback = callback;
5106 ctx->ct_validation_callback_arg = arg;
5110 int SSL_ct_is_enabled(const SSL *s)
5112 return s->ct_validation_callback != NULL;
5115 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5117 return ctx->ct_validation_callback != NULL;
5120 int ssl_validate_ct(SSL *s)
5123 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5125 SSL_DANE *dane = &s->dane;
5126 CT_POLICY_EVAL_CTX *ctx = NULL;
5127 const STACK_OF(SCT) *scts;
5130 * If no callback is set, the peer is anonymous, or its chain is invalid,
5131 * skip SCT validation - just return success. Applications that continue
5132 * handshakes without certificates, with unverified chains, or pinned leaf
5133 * certificates are outside the scope of the WebPKI and CT.
5135 * The above exclusions notwithstanding the vast majority of peers will
5136 * have rather ordinary certificate chains validated by typical
5137 * applications that perform certificate verification and therefore will
5138 * process SCTs when enabled.
5140 if (s->ct_validation_callback == NULL || cert == NULL ||
5141 s->verify_result != X509_V_OK ||
5142 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5146 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5147 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5149 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5150 switch (dane->mtlsa->usage) {
5151 case DANETLS_USAGE_DANE_TA:
5152 case DANETLS_USAGE_DANE_EE:
5157 ctx = CT_POLICY_EVAL_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
5159 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5160 ERR_R_MALLOC_FAILURE);
5164 issuer = sk_X509_value(s->verified_chain, 1);
5165 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5166 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5167 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5168 CT_POLICY_EVAL_CTX_set_time(
5169 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5171 scts = SSL_get0_peer_scts(s);
5174 * This function returns success (> 0) only when all the SCTs are valid, 0
5175 * when some are invalid, and < 0 on various internal errors (out of
5176 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5177 * reason to abort the handshake, that decision is up to the callback.
5178 * Therefore, we error out only in the unexpected case that the return
5179 * value is negative.
5181 * XXX: One might well argue that the return value of this function is an
5182 * unfortunate design choice. Its job is only to determine the validation
5183 * status of each of the provided SCTs. So long as it correctly separates
5184 * the wheat from the chaff it should return success. Failure in this case
5185 * ought to correspond to an inability to carry out its duties.
5187 if (SCT_LIST_validate(scts, ctx) < 0) {
5188 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5189 SSL_R_SCT_VERIFICATION_FAILED);
5193 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5195 ret = 0; /* This function returns 0 on failure */
5197 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5198 SSL_R_CALLBACK_FAILED);
5201 CT_POLICY_EVAL_CTX_free(ctx);
5203 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5204 * failure return code here. Also the application may wish the complete
5205 * the handshake, and then disconnect cleanly at a higher layer, after
5206 * checking the verification status of the completed connection.
5208 * We therefore force a certificate verification failure which will be
5209 * visible via SSL_get_verify_result() and cached as part of any resumed
5212 * Note: the permissive callback is for information gathering only, always
5213 * returns success, and does not affect verification status. Only the
5214 * strict callback or a custom application-specified callback can trigger
5215 * connection failure or record a verification error.
5218 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5222 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5224 switch (validation_mode) {
5226 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5228 case SSL_CT_VALIDATION_PERMISSIVE:
5229 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5230 case SSL_CT_VALIDATION_STRICT:
5231 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5235 int SSL_enable_ct(SSL *s, int validation_mode)
5237 switch (validation_mode) {
5239 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5241 case SSL_CT_VALIDATION_PERMISSIVE:
5242 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5243 case SSL_CT_VALIDATION_STRICT:
5244 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5248 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5250 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5253 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5255 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5258 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5260 CTLOG_STORE_free(ctx->ctlog_store);
5261 ctx->ctlog_store = logs;
5264 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5266 return ctx->ctlog_store;
5269 #endif /* OPENSSL_NO_CT */
5271 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5274 c->client_hello_cb = cb;
5275 c->client_hello_cb_arg = arg;
5278 int SSL_client_hello_isv2(SSL *s)
5280 if (s->clienthello == NULL)
5282 return s->clienthello->isv2;
5285 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5287 if (s->clienthello == NULL)
5289 return s->clienthello->legacy_version;
5292 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5294 if (s->clienthello == NULL)
5297 *out = s->clienthello->random;
5298 return SSL3_RANDOM_SIZE;
5301 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5303 if (s->clienthello == NULL)
5306 *out = s->clienthello->session_id;
5307 return s->clienthello->session_id_len;
5310 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5312 if (s->clienthello == NULL)
5315 *out = PACKET_data(&s->clienthello->ciphersuites);
5316 return PACKET_remaining(&s->clienthello->ciphersuites);
5319 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5321 if (s->clienthello == NULL)
5324 *out = s->clienthello->compressions;
5325 return s->clienthello->compressions_len;
5328 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5334 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5336 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5337 ext = s->clienthello->pre_proc_exts + i;
5346 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5347 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5348 ERR_R_MALLOC_FAILURE);
5351 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5352 ext = s->clienthello->pre_proc_exts + i;
5354 if (ext->received_order >= num)
5356 present[ext->received_order] = ext->type;
5363 OPENSSL_free(present);
5367 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5373 if (s->clienthello == NULL)
5375 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5376 r = s->clienthello->pre_proc_exts + i;
5377 if (r->present && r->type == type) {
5379 *out = PACKET_data(&r->data);
5381 *outlen = PACKET_remaining(&r->data);
5388 int SSL_free_buffers(SSL *ssl)
5390 RECORD_LAYER *rl = &ssl->rlayer;
5392 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5395 RECORD_LAYER_release(rl);
5399 int SSL_alloc_buffers(SSL *ssl)
5401 return ssl3_setup_buffers(ssl);
5404 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5406 ctx->keylog_callback = cb;
5409 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5411 return ctx->keylog_callback;
5414 static int nss_keylog_int(const char *prefix,
5416 const uint8_t *parameter_1,
5417 size_t parameter_1_len,
5418 const uint8_t *parameter_2,
5419 size_t parameter_2_len)
5422 char *cursor = NULL;
5427 if (ssl->ctx->keylog_callback == NULL)
5431 * Our output buffer will contain the following strings, rendered with
5432 * space characters in between, terminated by a NULL character: first the
5433 * prefix, then the first parameter, then the second parameter. The
5434 * meaning of each parameter depends on the specific key material being
5435 * logged. Note that the first and second parameters are encoded in
5436 * hexadecimal, so we need a buffer that is twice their lengths.
5438 prefix_len = strlen(prefix);
5439 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5440 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5441 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5442 ERR_R_MALLOC_FAILURE);
5446 strcpy(cursor, prefix);
5447 cursor += prefix_len;
5450 for (i = 0; i < parameter_1_len; i++) {
5451 sprintf(cursor, "%02x", parameter_1[i]);
5456 for (i = 0; i < parameter_2_len; i++) {
5457 sprintf(cursor, "%02x", parameter_2[i]);
5462 ssl->ctx->keylog_callback(ssl, (const char *)out);
5463 OPENSSL_clear_free(out, out_len);
5468 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5469 const uint8_t *encrypted_premaster,
5470 size_t encrypted_premaster_len,
5471 const uint8_t *premaster,
5472 size_t premaster_len)
5474 if (encrypted_premaster_len < 8) {
5475 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5476 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5480 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5481 return nss_keylog_int("RSA",
5483 encrypted_premaster,
5489 int ssl_log_secret(SSL *ssl,
5491 const uint8_t *secret,
5494 return nss_keylog_int(label,
5496 ssl->s3.client_random,
5502 #define SSLV2_CIPHER_LEN 3
5504 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5508 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5510 if (PACKET_remaining(cipher_suites) == 0) {
5511 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5512 SSL_R_NO_CIPHERS_SPECIFIED);
5516 if (PACKET_remaining(cipher_suites) % n != 0) {
5517 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5518 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5522 OPENSSL_free(s->s3.tmp.ciphers_raw);
5523 s->s3.tmp.ciphers_raw = NULL;
5524 s->s3.tmp.ciphers_rawlen = 0;
5527 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5528 PACKET sslv2ciphers = *cipher_suites;
5529 unsigned int leadbyte;
5533 * We store the raw ciphers list in SSLv3+ format so we need to do some
5534 * preprocessing to convert the list first. If there are any SSLv2 only
5535 * ciphersuites with a non-zero leading byte then we are going to
5536 * slightly over allocate because we won't store those. But that isn't a
5539 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5540 s->s3.tmp.ciphers_raw = raw;
5542 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5543 ERR_R_MALLOC_FAILURE);
5546 for (s->s3.tmp.ciphers_rawlen = 0;
5547 PACKET_remaining(&sslv2ciphers) > 0;
5548 raw += TLS_CIPHER_LEN) {
5549 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5551 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5554 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5555 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5557 OPENSSL_free(s->s3.tmp.ciphers_raw);
5558 s->s3.tmp.ciphers_raw = NULL;
5559 s->s3.tmp.ciphers_rawlen = 0;
5563 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5565 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5566 &s->s3.tmp.ciphers_rawlen)) {
5567 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5568 ERR_R_INTERNAL_ERROR);
5574 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5575 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5576 STACK_OF(SSL_CIPHER) **scsvs)
5580 if (!PACKET_buf_init(&pkt, bytes, len))
5582 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5585 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5586 STACK_OF(SSL_CIPHER) **skp,
5587 STACK_OF(SSL_CIPHER) **scsvs_out,
5588 int sslv2format, int fatal)
5590 const SSL_CIPHER *c;
5591 STACK_OF(SSL_CIPHER) *sk = NULL;
5592 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5594 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5595 unsigned char cipher[SSLV2_CIPHER_LEN];
5597 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5599 if (PACKET_remaining(cipher_suites) == 0) {
5601 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5602 SSL_R_NO_CIPHERS_SPECIFIED);
5604 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5608 if (PACKET_remaining(cipher_suites) % n != 0) {
5610 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5611 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5613 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5614 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5618 sk = sk_SSL_CIPHER_new_null();
5619 scsvs = sk_SSL_CIPHER_new_null();
5620 if (sk == NULL || scsvs == NULL) {
5622 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5623 ERR_R_MALLOC_FAILURE);
5625 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5629 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5631 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5632 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5633 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5635 if (sslv2format && cipher[0] != '\0')
5638 /* For SSLv2-compat, ignore leading 0-byte. */
5639 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5641 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5642 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5644 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5645 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5647 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5652 if (PACKET_remaining(cipher_suites) > 0) {
5654 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5657 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5664 sk_SSL_CIPHER_free(sk);
5665 if (scsvs_out != NULL)
5668 sk_SSL_CIPHER_free(scsvs);
5671 sk_SSL_CIPHER_free(sk);
5672 sk_SSL_CIPHER_free(scsvs);
5676 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5678 ctx->max_early_data = max_early_data;
5683 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5685 return ctx->max_early_data;
5688 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5690 s->max_early_data = max_early_data;
5695 uint32_t SSL_get_max_early_data(const SSL *s)
5697 return s->max_early_data;
5700 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5702 ctx->recv_max_early_data = recv_max_early_data;
5707 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5709 return ctx->recv_max_early_data;
5712 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5714 s->recv_max_early_data = recv_max_early_data;
5719 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5721 return s->recv_max_early_data;
5724 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5726 /* Return any active Max Fragment Len extension */
5727 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5728 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5730 /* return current SSL connection setting */
5731 return ssl->max_send_fragment;
5734 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5736 /* Return a value regarding an active Max Fragment Len extension */
5737 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5738 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5739 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5741 /* else limit |split_send_fragment| to current |max_send_fragment| */
5742 if (ssl->split_send_fragment > ssl->max_send_fragment)
5743 return ssl->max_send_fragment;
5745 /* return current SSL connection setting */
5746 return ssl->split_send_fragment;
5749 int SSL_stateless(SSL *s)
5753 /* Ensure there is no state left over from a previous invocation */
5759 s->s3.flags |= TLS1_FLAGS_STATELESS;
5760 ret = SSL_accept(s);
5761 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5763 if (ret > 0 && s->ext.cookieok)
5766 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5772 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5774 ctx->pha_enabled = val;
5777 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5779 ssl->pha_enabled = val;
5782 int SSL_verify_client_post_handshake(SSL *ssl)
5784 if (!SSL_IS_TLS13(ssl)) {
5785 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5789 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5793 if (!SSL_is_init_finished(ssl)) {
5794 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5798 switch (ssl->post_handshake_auth) {
5800 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5803 case SSL_PHA_EXT_SENT:
5804 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5806 case SSL_PHA_EXT_RECEIVED:
5808 case SSL_PHA_REQUEST_PENDING:
5809 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5811 case SSL_PHA_REQUESTED:
5812 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5816 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5818 /* checks verify_mode and algorithm_auth */
5819 if (!send_certificate_request(ssl)) {
5820 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5821 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5825 ossl_statem_set_in_init(ssl, 1);
5829 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5830 SSL_CTX_generate_session_ticket_fn gen_cb,
5831 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5834 ctx->generate_ticket_cb = gen_cb;
5835 ctx->decrypt_ticket_cb = dec_cb;
5836 ctx->ticket_cb_data = arg;
5840 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5841 SSL_allow_early_data_cb_fn cb,
5844 ctx->allow_early_data_cb = cb;
5845 ctx->allow_early_data_cb_data = arg;
5848 void SSL_set_allow_early_data_cb(SSL *s,
5849 SSL_allow_early_data_cb_fn cb,
5852 s->allow_early_data_cb = cb;
5853 s->allow_early_data_cb_data = arg;
5856 const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5858 const char *properties)
5862 #ifndef OPENSSL_NO_ENGINE
5866 * If there is an Engine available for this cipher we use the "implicit"
5867 * form to ensure we use that engine later.
5869 eng = ENGINE_get_cipher_engine(nid);
5872 return EVP_get_cipherbynid(nid);
5876 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5878 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5884 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5886 /* Don't up-ref an implicit EVP_CIPHER */
5887 if (EVP_CIPHER_provider(cipher) == NULL)
5891 * The cipher was explicitly fetched and therefore it is safe to cast
5894 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5897 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5902 if (EVP_CIPHER_provider(cipher) != NULL) {
5904 * The cipher was explicitly fetched and therefore it is safe to cast
5907 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5911 const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5913 const char *properties)
5917 #ifndef OPENSSL_NO_ENGINE
5921 * If there is an Engine available for this digest we use the "implicit"
5922 * form to ensure we use that engine later.
5924 eng = ENGINE_get_digest_engine(nid);
5927 return EVP_get_digestbynid(nid);
5931 /* Otherwise we do an explicit fetch */
5933 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5938 int ssl_evp_md_up_ref(const EVP_MD *md)
5940 /* Don't up-ref an implicit EVP_MD */
5941 if (EVP_MD_provider(md) == NULL)
5945 * The digest was explicitly fetched and therefore it is safe to cast
5948 return EVP_MD_up_ref((EVP_MD *)md);
5951 void ssl_evp_md_free(const EVP_MD *md)
5956 if (EVP_MD_provider(md) != NULL) {
5958 * The digest was explicitly fetched and therefore it is safe to cast
5961 EVP_MD_free((EVP_MD *)md);