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 /* If a hostname is provided and parses as an IP address,
959 * treat it as such. */
960 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
963 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
966 int SSL_add1_host(SSL *s, const char *hostname)
968 /* If a hostname is provided and parses as an IP address,
969 * treat it as such. */
970 if (hostname && X509_VERIFY_PARAM_set1_ip_asc(s->param, hostname) == 1)
973 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
976 void SSL_set_hostflags(SSL *s, unsigned int flags)
978 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
981 const char *SSL_get0_peername(SSL *s)
983 return X509_VERIFY_PARAM_get0_peername(s->param);
986 int SSL_CTX_dane_enable(SSL_CTX *ctx)
988 return dane_ctx_enable(&ctx->dane);
991 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
993 unsigned long orig = ctx->dane.flags;
995 ctx->dane.flags |= flags;
999 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1001 unsigned long orig = ctx->dane.flags;
1003 ctx->dane.flags &= ~flags;
1007 int SSL_dane_enable(SSL *s, const char *basedomain)
1009 SSL_DANE *dane = &s->dane;
1011 if (s->ctx->dane.mdmax == 0) {
1012 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1015 if (dane->trecs != NULL) {
1016 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1021 * Default SNI name. This rejects empty names, while set1_host below
1022 * accepts them and disables host name checks. To avoid side-effects with
1023 * invalid input, set the SNI name first.
1025 if (s->ext.hostname == NULL) {
1026 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1027 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1032 /* Primary RFC6125 reference identifier */
1033 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1034 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1040 dane->dctx = &s->ctx->dane;
1041 dane->trecs = sk_danetls_record_new_null();
1043 if (dane->trecs == NULL) {
1044 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1050 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1052 unsigned long orig = ssl->dane.flags;
1054 ssl->dane.flags |= flags;
1058 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1060 unsigned long orig = ssl->dane.flags;
1062 ssl->dane.flags &= ~flags;
1066 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1068 SSL_DANE *dane = &s->dane;
1070 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1074 *mcert = dane->mcert;
1076 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1081 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1082 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1084 SSL_DANE *dane = &s->dane;
1086 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1090 *usage = dane->mtlsa->usage;
1092 *selector = dane->mtlsa->selector;
1094 *mtype = dane->mtlsa->mtype;
1096 *data = dane->mtlsa->data;
1098 *dlen = dane->mtlsa->dlen;
1103 SSL_DANE *SSL_get0_dane(SSL *s)
1108 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1109 uint8_t mtype, unsigned const char *data, size_t dlen)
1111 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1114 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1117 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1120 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1122 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1125 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1127 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1130 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1135 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1140 void SSL_certs_clear(SSL *s)
1142 ssl_cert_clear_certs(s->cert);
1145 void SSL_free(SSL *s)
1151 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1152 REF_PRINT_COUNT("SSL", s);
1155 REF_ASSERT_ISNT(i < 0);
1157 X509_VERIFY_PARAM_free(s->param);
1158 dane_final(&s->dane);
1159 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1161 RECORD_LAYER_release(&s->rlayer);
1163 /* Ignore return value */
1164 ssl_free_wbio_buffer(s);
1166 BIO_free_all(s->wbio);
1168 BIO_free_all(s->rbio);
1171 BUF_MEM_free(s->init_buf);
1173 /* add extra stuff */
1174 sk_SSL_CIPHER_free(s->cipher_list);
1175 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1176 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1177 sk_SSL_CIPHER_free(s->peer_ciphers);
1179 /* Make the next call work :-) */
1180 if (s->session != NULL) {
1181 ssl_clear_bad_session(s);
1182 SSL_SESSION_free(s->session);
1184 SSL_SESSION_free(s->psksession);
1185 OPENSSL_free(s->psksession_id);
1189 ssl_cert_free(s->cert);
1190 OPENSSL_free(s->shared_sigalgs);
1191 /* Free up if allocated */
1193 OPENSSL_free(s->ext.hostname);
1194 SSL_CTX_free(s->session_ctx);
1195 #ifndef OPENSSL_NO_EC
1196 OPENSSL_free(s->ext.ecpointformats);
1197 OPENSSL_free(s->ext.peer_ecpointformats);
1198 #endif /* OPENSSL_NO_EC */
1199 OPENSSL_free(s->ext.supportedgroups);
1200 OPENSSL_free(s->ext.peer_supportedgroups);
1201 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1202 #ifndef OPENSSL_NO_OCSP
1203 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1205 #ifndef OPENSSL_NO_CT
1206 SCT_LIST_free(s->scts);
1207 OPENSSL_free(s->ext.scts);
1209 OPENSSL_free(s->ext.ocsp.resp);
1210 OPENSSL_free(s->ext.alpn);
1211 OPENSSL_free(s->ext.tls13_cookie);
1212 if (s->clienthello != NULL)
1213 OPENSSL_free(s->clienthello->pre_proc_exts);
1214 OPENSSL_free(s->clienthello);
1215 OPENSSL_free(s->pha_context);
1216 EVP_MD_CTX_free(s->pha_dgst);
1218 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1219 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1221 sk_X509_pop_free(s->verified_chain, X509_free);
1223 if (s->method != NULL)
1224 s->method->ssl_free(s);
1226 SSL_CTX_free(s->ctx);
1228 ASYNC_WAIT_CTX_free(s->waitctx);
1230 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1231 OPENSSL_free(s->ext.npn);
1234 #ifndef OPENSSL_NO_SRTP
1235 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1238 CRYPTO_THREAD_lock_free(s->lock);
1243 void SSL_set0_rbio(SSL *s, BIO *rbio)
1245 BIO_free_all(s->rbio);
1249 void SSL_set0_wbio(SSL *s, BIO *wbio)
1252 * If the output buffering BIO is still in place, remove it
1254 if (s->bbio != NULL)
1255 s->wbio = BIO_pop(s->wbio);
1257 BIO_free_all(s->wbio);
1260 /* Re-attach |bbio| to the new |wbio|. */
1261 if (s->bbio != NULL)
1262 s->wbio = BIO_push(s->bbio, s->wbio);
1265 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1268 * For historical reasons, this function has many different cases in
1269 * ownership handling.
1272 /* If nothing has changed, do nothing */
1273 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1277 * If the two arguments are equal then one fewer reference is granted by the
1278 * caller than we want to take
1280 if (rbio != NULL && rbio == wbio)
1284 * If only the wbio is changed only adopt one reference.
1286 if (rbio == SSL_get_rbio(s)) {
1287 SSL_set0_wbio(s, wbio);
1291 * There is an asymmetry here for historical reasons. If only the rbio is
1292 * changed AND the rbio and wbio were originally different, then we only
1293 * adopt one reference.
1295 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1296 SSL_set0_rbio(s, rbio);
1300 /* Otherwise, adopt both references. */
1301 SSL_set0_rbio(s, rbio);
1302 SSL_set0_wbio(s, wbio);
1305 BIO *SSL_get_rbio(const SSL *s)
1310 BIO *SSL_get_wbio(const SSL *s)
1312 if (s->bbio != NULL) {
1314 * If |bbio| is active, the true caller-configured BIO is its
1317 return BIO_next(s->bbio);
1322 int SSL_get_fd(const SSL *s)
1324 return SSL_get_rfd(s);
1327 int SSL_get_rfd(const SSL *s)
1332 b = SSL_get_rbio(s);
1333 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1335 BIO_get_fd(r, &ret);
1339 int SSL_get_wfd(const SSL *s)
1344 b = SSL_get_wbio(s);
1345 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1347 BIO_get_fd(r, &ret);
1351 #ifndef OPENSSL_NO_SOCK
1352 int SSL_set_fd(SSL *s, int fd)
1357 bio = BIO_new(BIO_s_socket());
1360 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1363 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1364 SSL_set_bio(s, bio, bio);
1365 #ifndef OPENSSL_NO_KTLS
1367 * The new socket is created successfully regardless of ktls_enable.
1368 * ktls_enable doesn't change any functionality of the socket, except
1369 * changing the setsockopt to enable the processing of ktls_start.
1370 * Thus, it is not a problem to call it for non-TLS sockets.
1373 #endif /* OPENSSL_NO_KTLS */
1379 int SSL_set_wfd(SSL *s, int fd)
1381 BIO *rbio = SSL_get_rbio(s);
1383 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1384 || (int)BIO_get_fd(rbio, NULL) != fd) {
1385 BIO *bio = BIO_new(BIO_s_socket());
1388 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1391 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1392 SSL_set0_wbio(s, bio);
1393 #ifndef OPENSSL_NO_KTLS
1395 * The new socket is created successfully regardless of ktls_enable.
1396 * ktls_enable doesn't change any functionality of the socket, except
1397 * changing the setsockopt to enable the processing of ktls_start.
1398 * Thus, it is not a problem to call it for non-TLS sockets.
1401 #endif /* OPENSSL_NO_KTLS */
1404 SSL_set0_wbio(s, rbio);
1409 int SSL_set_rfd(SSL *s, int fd)
1411 BIO *wbio = SSL_get_wbio(s);
1413 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1414 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1415 BIO *bio = BIO_new(BIO_s_socket());
1418 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1421 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1422 SSL_set0_rbio(s, bio);
1425 SSL_set0_rbio(s, wbio);
1432 /* return length of latest Finished message we sent, copy to 'buf' */
1433 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1437 ret = s->s3.tmp.finish_md_len;
1440 memcpy(buf, s->s3.tmp.finish_md, count);
1444 /* return length of latest Finished message we expected, copy to 'buf' */
1445 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1449 ret = s->s3.tmp.peer_finish_md_len;
1452 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1456 int SSL_get_verify_mode(const SSL *s)
1458 return s->verify_mode;
1461 int SSL_get_verify_depth(const SSL *s)
1463 return X509_VERIFY_PARAM_get_depth(s->param);
1466 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1467 return s->verify_callback;
1470 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1472 return ctx->verify_mode;
1475 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1477 return X509_VERIFY_PARAM_get_depth(ctx->param);
1480 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1481 return ctx->default_verify_callback;
1484 void SSL_set_verify(SSL *s, int mode,
1485 int (*callback) (int ok, X509_STORE_CTX *ctx))
1487 s->verify_mode = mode;
1488 if (callback != NULL)
1489 s->verify_callback = callback;
1492 void SSL_set_verify_depth(SSL *s, int depth)
1494 X509_VERIFY_PARAM_set_depth(s->param, depth);
1497 void SSL_set_read_ahead(SSL *s, int yes)
1499 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1502 int SSL_get_read_ahead(const SSL *s)
1504 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1507 int SSL_pending(const SSL *s)
1509 size_t pending = s->method->ssl_pending(s);
1512 * SSL_pending cannot work properly if read-ahead is enabled
1513 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1514 * impossible to fix since SSL_pending cannot report errors that may be
1515 * observed while scanning the new data. (Note that SSL_pending() is
1516 * often used as a boolean value, so we'd better not return -1.)
1518 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1519 * we just return INT_MAX.
1521 return pending < INT_MAX ? (int)pending : INT_MAX;
1524 int SSL_has_pending(const SSL *s)
1527 * Similar to SSL_pending() but returns a 1 to indicate that we have
1528 * unprocessed data available or 0 otherwise (as opposed to the number of
1529 * bytes available). Unlike SSL_pending() this will take into account
1530 * read_ahead data. A 1 return simply indicates that we have unprocessed
1531 * data. That data may not result in any application data, or we may fail
1532 * to parse the records for some reason.
1534 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1537 return RECORD_LAYER_read_pending(&s->rlayer);
1540 X509 *SSL_get1_peer_certificate(const SSL *s)
1542 X509 *r = SSL_get0_peer_certificate(s);
1550 X509 *SSL_get0_peer_certificate(const SSL *s)
1552 if ((s == NULL) || (s->session == NULL))
1555 return s->session->peer;
1558 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1562 if ((s == NULL) || (s->session == NULL))
1565 r = s->session->peer_chain;
1568 * If we are a client, cert_chain includes the peer's own certificate; if
1569 * we are a server, it does not.
1576 * Now in theory, since the calling process own 't' it should be safe to
1577 * modify. We need to be able to read f without being hassled
1579 int SSL_copy_session_id(SSL *t, const SSL *f)
1582 /* Do we need to to SSL locking? */
1583 if (!SSL_set_session(t, SSL_get_session(f))) {
1588 * what if we are setup for one protocol version but want to talk another
1590 if (t->method != f->method) {
1591 t->method->ssl_free(t);
1592 t->method = f->method;
1593 if (t->method->ssl_new(t) == 0)
1597 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1598 ssl_cert_free(t->cert);
1600 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1607 /* Fix this so it checks all the valid key/cert options */
1608 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1610 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1611 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1614 if (ctx->cert->key->privatekey == NULL) {
1615 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1618 return X509_check_private_key
1619 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1622 /* Fix this function so that it takes an optional type parameter */
1623 int SSL_check_private_key(const SSL *ssl)
1626 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1629 if (ssl->cert->key->x509 == NULL) {
1630 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1633 if (ssl->cert->key->privatekey == NULL) {
1634 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1637 return X509_check_private_key(ssl->cert->key->x509,
1638 ssl->cert->key->privatekey);
1641 int SSL_waiting_for_async(SSL *s)
1649 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1651 ASYNC_WAIT_CTX *ctx = s->waitctx;
1655 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1658 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1659 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1661 ASYNC_WAIT_CTX *ctx = s->waitctx;
1665 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1669 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1671 ctx->async_cb = callback;
1675 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1677 ctx->async_cb_arg = arg;
1681 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1683 s->async_cb = callback;
1687 int SSL_set_async_callback_arg(SSL *s, void *arg)
1689 s->async_cb_arg = arg;
1693 int SSL_get_async_status(SSL *s, int *status)
1695 ASYNC_WAIT_CTX *ctx = s->waitctx;
1699 *status = ASYNC_WAIT_CTX_get_status(ctx);
1703 int SSL_accept(SSL *s)
1705 if (s->handshake_func == NULL) {
1706 /* Not properly initialized yet */
1707 SSL_set_accept_state(s);
1710 return SSL_do_handshake(s);
1713 int SSL_connect(SSL *s)
1715 if (s->handshake_func == NULL) {
1716 /* Not properly initialized yet */
1717 SSL_set_connect_state(s);
1720 return SSL_do_handshake(s);
1723 long SSL_get_default_timeout(const SSL *s)
1725 return s->method->get_timeout();
1728 static int ssl_async_wait_ctx_cb(void *arg)
1730 SSL *s = (SSL *)arg;
1732 return s->async_cb(s, s->async_cb_arg);
1735 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1736 int (*func) (void *))
1739 if (s->waitctx == NULL) {
1740 s->waitctx = ASYNC_WAIT_CTX_new();
1741 if (s->waitctx == NULL)
1743 if (s->async_cb != NULL
1744 && !ASYNC_WAIT_CTX_set_callback
1745 (s->waitctx, ssl_async_wait_ctx_cb, s))
1748 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1749 sizeof(struct ssl_async_args))) {
1751 s->rwstate = SSL_NOTHING;
1752 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1755 s->rwstate = SSL_ASYNC_PAUSED;
1758 s->rwstate = SSL_ASYNC_NO_JOBS;
1764 s->rwstate = SSL_NOTHING;
1765 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1766 /* Shouldn't happen */
1771 static int ssl_io_intern(void *vargs)
1773 struct ssl_async_args *args;
1778 args = (struct ssl_async_args *)vargs;
1782 switch (args->type) {
1784 return args->f.func_read(s, buf, num, &s->asyncrw);
1786 return args->f.func_write(s, buf, num, &s->asyncrw);
1788 return args->f.func_other(s);
1793 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1795 if (s->handshake_func == NULL) {
1796 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1800 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1801 s->rwstate = SSL_NOTHING;
1805 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1806 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1807 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1811 * If we are a client and haven't received the ServerHello etc then we
1814 ossl_statem_check_finish_init(s, 0);
1816 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1817 struct ssl_async_args args;
1823 args.type = READFUNC;
1824 args.f.func_read = s->method->ssl_read;
1826 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1827 *readbytes = s->asyncrw;
1830 return s->method->ssl_read(s, buf, num, readbytes);
1834 int SSL_read(SSL *s, void *buf, int num)
1840 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1844 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1847 * The cast is safe here because ret should be <= INT_MAX because num is
1851 ret = (int)readbytes;
1856 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1858 int ret = ssl_read_internal(s, buf, num, readbytes);
1865 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1870 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1871 return SSL_READ_EARLY_DATA_ERROR;
1874 switch (s->early_data_state) {
1875 case SSL_EARLY_DATA_NONE:
1876 if (!SSL_in_before(s)) {
1877 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1878 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1879 return SSL_READ_EARLY_DATA_ERROR;
1883 case SSL_EARLY_DATA_ACCEPT_RETRY:
1884 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1885 ret = SSL_accept(s);
1888 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1889 return SSL_READ_EARLY_DATA_ERROR;
1893 case SSL_EARLY_DATA_READ_RETRY:
1894 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1895 s->early_data_state = SSL_EARLY_DATA_READING;
1896 ret = SSL_read_ex(s, buf, num, readbytes);
1898 * State machine will update early_data_state to
1899 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1902 if (ret > 0 || (ret <= 0 && s->early_data_state
1903 != SSL_EARLY_DATA_FINISHED_READING)) {
1904 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1905 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1906 : SSL_READ_EARLY_DATA_ERROR;
1909 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1912 return SSL_READ_EARLY_DATA_FINISH;
1915 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1916 return SSL_READ_EARLY_DATA_ERROR;
1920 int SSL_get_early_data_status(const SSL *s)
1922 return s->ext.early_data;
1925 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1927 if (s->handshake_func == NULL) {
1928 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1932 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1935 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1936 struct ssl_async_args args;
1942 args.type = READFUNC;
1943 args.f.func_read = s->method->ssl_peek;
1945 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1946 *readbytes = s->asyncrw;
1949 return s->method->ssl_peek(s, buf, num, readbytes);
1953 int SSL_peek(SSL *s, void *buf, int num)
1959 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1963 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1966 * The cast is safe here because ret should be <= INT_MAX because num is
1970 ret = (int)readbytes;
1976 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1978 int ret = ssl_peek_internal(s, buf, num, readbytes);
1985 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1987 if (s->handshake_func == NULL) {
1988 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1992 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1993 s->rwstate = SSL_NOTHING;
1994 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1998 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1999 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2000 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2001 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2004 /* If we are a client and haven't sent the Finished we better do that */
2005 ossl_statem_check_finish_init(s, 1);
2007 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2009 struct ssl_async_args args;
2012 args.buf = (void *)buf;
2014 args.type = WRITEFUNC;
2015 args.f.func_write = s->method->ssl_write;
2017 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2018 *written = s->asyncrw;
2021 return s->method->ssl_write(s, buf, num, written);
2025 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2029 if (s->handshake_func == NULL) {
2030 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2034 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2035 s->rwstate = SSL_NOTHING;
2036 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2040 if (!BIO_get_ktls_send(s->wbio)) {
2041 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2045 /* If we have an alert to send, lets send it */
2046 if (s->s3.alert_dispatch) {
2047 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2049 /* SSLfatal() already called if appropriate */
2052 /* if it went, fall through and send more stuff */
2055 s->rwstate = SSL_WRITING;
2056 if (BIO_flush(s->wbio) <= 0) {
2057 if (!BIO_should_retry(s->wbio)) {
2058 s->rwstate = SSL_NOTHING;
2061 set_sys_error(EAGAIN);
2067 #ifdef OPENSSL_NO_KTLS
2068 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2069 "can't call ktls_sendfile(), ktls disabled");
2072 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2074 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2075 if ((get_last_sys_error() == EAGAIN) ||
2076 (get_last_sys_error() == EINTR) ||
2077 (get_last_sys_error() == EBUSY))
2078 BIO_set_retry_write(s->wbio);
2081 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2084 s->rwstate = SSL_NOTHING;
2089 int SSL_write(SSL *s, const void *buf, int num)
2095 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2099 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2102 * The cast is safe here because ret should be <= INT_MAX because num is
2111 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2113 int ret = ssl_write_internal(s, buf, num, written);
2120 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2122 int ret, early_data_state;
2124 uint32_t partialwrite;
2126 switch (s->early_data_state) {
2127 case SSL_EARLY_DATA_NONE:
2129 || !SSL_in_before(s)
2130 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2131 && (s->psk_use_session_cb == NULL))) {
2132 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2133 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2138 case SSL_EARLY_DATA_CONNECT_RETRY:
2139 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2140 ret = SSL_connect(s);
2143 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2148 case SSL_EARLY_DATA_WRITE_RETRY:
2149 s->early_data_state = SSL_EARLY_DATA_WRITING;
2151 * We disable partial write for early data because we don't keep track
2152 * of how many bytes we've written between the SSL_write_ex() call and
2153 * the flush if the flush needs to be retried)
2155 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2156 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2157 ret = SSL_write_ex(s, buf, num, &writtmp);
2158 s->mode |= partialwrite;
2160 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2163 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2166 case SSL_EARLY_DATA_WRITE_FLUSH:
2167 /* The buffering BIO is still in place so we need to flush it */
2168 if (statem_flush(s) != 1)
2171 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2174 case SSL_EARLY_DATA_FINISHED_READING:
2175 case SSL_EARLY_DATA_READ_RETRY:
2176 early_data_state = s->early_data_state;
2177 /* We are a server writing to an unauthenticated client */
2178 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2179 ret = SSL_write_ex(s, buf, num, written);
2180 /* The buffering BIO is still in place */
2182 (void)BIO_flush(s->wbio);
2183 s->early_data_state = early_data_state;
2187 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2192 int SSL_shutdown(SSL *s)
2195 * Note that this function behaves differently from what one might
2196 * expect. Return values are 0 for no success (yet), 1 for success; but
2197 * calling it once is usually not enough, even if blocking I/O is used
2198 * (see ssl3_shutdown).
2201 if (s->handshake_func == NULL) {
2202 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2206 if (!SSL_in_init(s)) {
2207 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2208 struct ssl_async_args args;
2211 args.type = OTHERFUNC;
2212 args.f.func_other = s->method->ssl_shutdown;
2214 return ssl_start_async_job(s, &args, ssl_io_intern);
2216 return s->method->ssl_shutdown(s);
2219 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2224 int SSL_key_update(SSL *s, int updatetype)
2227 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2228 * negotiated, and that it is appropriate to call SSL_key_update() instead
2229 * of SSL_renegotiate().
2231 if (!SSL_IS_TLS13(s)) {
2232 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2236 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2237 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2238 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2242 if (!SSL_is_init_finished(s)) {
2243 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2247 ossl_statem_set_in_init(s, 1);
2248 s->key_update = updatetype;
2252 int SSL_get_key_update_type(const SSL *s)
2254 return s->key_update;
2257 int SSL_renegotiate(SSL *s)
2259 if (SSL_IS_TLS13(s)) {
2260 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2264 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2265 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2272 return s->method->ssl_renegotiate(s);
2275 int SSL_renegotiate_abbreviated(SSL *s)
2277 if (SSL_IS_TLS13(s)) {
2278 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2282 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2283 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2290 return s->method->ssl_renegotiate(s);
2293 int SSL_renegotiate_pending(const SSL *s)
2296 * becomes true when negotiation is requested; false again once a
2297 * handshake has finished
2299 return (s->renegotiate != 0);
2302 int SSL_new_session_ticket(SSL *s)
2304 if (SSL_in_init(s) || SSL_IS_FIRST_HANDSHAKE(s) || !s->server
2305 || !SSL_IS_TLS13(s))
2307 s->ext.extra_tickets_expected++;
2311 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2316 case SSL_CTRL_GET_READ_AHEAD:
2317 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2318 case SSL_CTRL_SET_READ_AHEAD:
2319 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2320 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2323 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2324 s->msg_callback_arg = parg;
2328 return (s->mode |= larg);
2329 case SSL_CTRL_CLEAR_MODE:
2330 return (s->mode &= ~larg);
2331 case SSL_CTRL_GET_MAX_CERT_LIST:
2332 return (long)s->max_cert_list;
2333 case SSL_CTRL_SET_MAX_CERT_LIST:
2336 l = (long)s->max_cert_list;
2337 s->max_cert_list = (size_t)larg;
2339 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2340 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2342 #ifndef OPENSSL_NO_KTLS
2343 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2345 #endif /* OPENSSL_NO_KTLS */
2346 s->max_send_fragment = larg;
2347 if (s->max_send_fragment < s->split_send_fragment)
2348 s->split_send_fragment = s->max_send_fragment;
2350 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2351 if ((size_t)larg > s->max_send_fragment || larg == 0)
2353 s->split_send_fragment = larg;
2355 case SSL_CTRL_SET_MAX_PIPELINES:
2356 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2358 s->max_pipelines = larg;
2360 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2362 case SSL_CTRL_GET_RI_SUPPORT:
2363 return s->s3.send_connection_binding;
2364 case SSL_CTRL_CERT_FLAGS:
2365 return (s->cert->cert_flags |= larg);
2366 case SSL_CTRL_CLEAR_CERT_FLAGS:
2367 return (s->cert->cert_flags &= ~larg);
2369 case SSL_CTRL_GET_RAW_CIPHERLIST:
2371 if (s->s3.tmp.ciphers_raw == NULL)
2373 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2374 return (int)s->s3.tmp.ciphers_rawlen;
2376 return TLS_CIPHER_LEN;
2378 case SSL_CTRL_GET_EXTMS_SUPPORT:
2379 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2381 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2385 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2386 return ssl_check_allowed_versions(larg, s->max_proto_version)
2387 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2388 &s->min_proto_version);
2389 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2390 return s->min_proto_version;
2391 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2392 return ssl_check_allowed_versions(s->min_proto_version, larg)
2393 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2394 &s->max_proto_version);
2395 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2396 return s->max_proto_version;
2398 return s->method->ssl_ctrl(s, cmd, larg, parg);
2402 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2405 case SSL_CTRL_SET_MSG_CALLBACK:
2406 s->msg_callback = (void (*)
2407 (int write_p, int version, int content_type,
2408 const void *buf, size_t len, SSL *ssl,
2413 return s->method->ssl_callback_ctrl(s, cmd, fp);
2417 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2419 return ctx->sessions;
2422 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2425 /* For some cases with ctx == NULL perform syntax checks */
2428 case SSL_CTRL_SET_GROUPS_LIST:
2429 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2430 case SSL_CTRL_SET_SIGALGS_LIST:
2431 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2432 return tls1_set_sigalgs_list(NULL, parg, 0);
2439 case SSL_CTRL_GET_READ_AHEAD:
2440 return ctx->read_ahead;
2441 case SSL_CTRL_SET_READ_AHEAD:
2442 l = ctx->read_ahead;
2443 ctx->read_ahead = larg;
2446 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2447 ctx->msg_callback_arg = parg;
2450 case SSL_CTRL_GET_MAX_CERT_LIST:
2451 return (long)ctx->max_cert_list;
2452 case SSL_CTRL_SET_MAX_CERT_LIST:
2455 l = (long)ctx->max_cert_list;
2456 ctx->max_cert_list = (size_t)larg;
2459 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2462 l = (long)ctx->session_cache_size;
2463 ctx->session_cache_size = (size_t)larg;
2465 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2466 return (long)ctx->session_cache_size;
2467 case SSL_CTRL_SET_SESS_CACHE_MODE:
2468 l = ctx->session_cache_mode;
2469 ctx->session_cache_mode = larg;
2471 case SSL_CTRL_GET_SESS_CACHE_MODE:
2472 return ctx->session_cache_mode;
2474 case SSL_CTRL_SESS_NUMBER:
2475 return lh_SSL_SESSION_num_items(ctx->sessions);
2476 case SSL_CTRL_SESS_CONNECT:
2477 return tsan_load(&ctx->stats.sess_connect);
2478 case SSL_CTRL_SESS_CONNECT_GOOD:
2479 return tsan_load(&ctx->stats.sess_connect_good);
2480 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2481 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2482 case SSL_CTRL_SESS_ACCEPT:
2483 return tsan_load(&ctx->stats.sess_accept);
2484 case SSL_CTRL_SESS_ACCEPT_GOOD:
2485 return tsan_load(&ctx->stats.sess_accept_good);
2486 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2487 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2488 case SSL_CTRL_SESS_HIT:
2489 return tsan_load(&ctx->stats.sess_hit);
2490 case SSL_CTRL_SESS_CB_HIT:
2491 return tsan_load(&ctx->stats.sess_cb_hit);
2492 case SSL_CTRL_SESS_MISSES:
2493 return tsan_load(&ctx->stats.sess_miss);
2494 case SSL_CTRL_SESS_TIMEOUTS:
2495 return tsan_load(&ctx->stats.sess_timeout);
2496 case SSL_CTRL_SESS_CACHE_FULL:
2497 return tsan_load(&ctx->stats.sess_cache_full);
2499 return (ctx->mode |= larg);
2500 case SSL_CTRL_CLEAR_MODE:
2501 return (ctx->mode &= ~larg);
2502 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2503 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2505 ctx->max_send_fragment = larg;
2506 if (ctx->max_send_fragment < ctx->split_send_fragment)
2507 ctx->split_send_fragment = ctx->max_send_fragment;
2509 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2510 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2512 ctx->split_send_fragment = larg;
2514 case SSL_CTRL_SET_MAX_PIPELINES:
2515 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2517 ctx->max_pipelines = larg;
2519 case SSL_CTRL_CERT_FLAGS:
2520 return (ctx->cert->cert_flags |= larg);
2521 case SSL_CTRL_CLEAR_CERT_FLAGS:
2522 return (ctx->cert->cert_flags &= ~larg);
2523 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2524 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2525 && ssl_set_version_bound(ctx->method->version, (int)larg,
2526 &ctx->min_proto_version);
2527 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2528 return ctx->min_proto_version;
2529 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2530 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2531 && ssl_set_version_bound(ctx->method->version, (int)larg,
2532 &ctx->max_proto_version);
2533 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2534 return ctx->max_proto_version;
2536 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2540 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2543 case SSL_CTRL_SET_MSG_CALLBACK:
2544 ctx->msg_callback = (void (*)
2545 (int write_p, int version, int content_type,
2546 const void *buf, size_t len, SSL *ssl,
2551 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2555 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2564 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2565 const SSL_CIPHER *const *bp)
2567 if ((*ap)->id > (*bp)->id)
2569 if ((*ap)->id < (*bp)->id)
2574 /** return a STACK of the ciphers available for the SSL and in order of
2576 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2579 if (s->cipher_list != NULL) {
2580 return s->cipher_list;
2581 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2582 return s->ctx->cipher_list;
2588 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2590 if ((s == NULL) || !s->server)
2592 return s->peer_ciphers;
2595 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2597 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2600 ciphers = SSL_get_ciphers(s);
2603 if (!ssl_set_client_disabled(s))
2605 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2606 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2607 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2609 sk = sk_SSL_CIPHER_new_null();
2612 if (!sk_SSL_CIPHER_push(sk, c)) {
2613 sk_SSL_CIPHER_free(sk);
2621 /** return a STACK of the ciphers available for the SSL and in order of
2623 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2626 if (s->cipher_list_by_id != NULL) {
2627 return s->cipher_list_by_id;
2628 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2629 return s->ctx->cipher_list_by_id;
2635 /** The old interface to get the same thing as SSL_get_ciphers() */
2636 const char *SSL_get_cipher_list(const SSL *s, int n)
2638 const SSL_CIPHER *c;
2639 STACK_OF(SSL_CIPHER) *sk;
2643 sk = SSL_get_ciphers(s);
2644 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2646 c = sk_SSL_CIPHER_value(sk, n);
2652 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2654 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2657 return ctx->cipher_list;
2662 * Distinguish between ciphers controlled by set_ciphersuite() and
2663 * set_cipher_list() when counting.
2665 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2668 const SSL_CIPHER *c;
2672 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2673 c = sk_SSL_CIPHER_value(sk, i);
2674 if (c->min_tls >= TLS1_3_VERSION)
2681 /** specify the ciphers to be used by default by the SSL_CTX */
2682 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2684 STACK_OF(SSL_CIPHER) *sk;
2686 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2687 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2690 * ssl_create_cipher_list may return an empty stack if it was unable to
2691 * find a cipher matching the given rule string (for example if the rule
2692 * string specifies a cipher which has been disabled). This is not an
2693 * error as far as ssl_create_cipher_list is concerned, and hence
2694 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2698 else if (cipher_list_tls12_num(sk) == 0) {
2699 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2705 /** specify the ciphers to be used by the SSL */
2706 int SSL_set_cipher_list(SSL *s, const char *str)
2708 STACK_OF(SSL_CIPHER) *sk;
2710 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2711 &s->cipher_list, &s->cipher_list_by_id, str,
2713 /* see comment in SSL_CTX_set_cipher_list */
2716 else if (cipher_list_tls12_num(sk) == 0) {
2717 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2723 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2726 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2727 const SSL_CIPHER *c;
2731 || s->peer_ciphers == NULL
2736 clntsk = s->peer_ciphers;
2737 srvrsk = SSL_get_ciphers(s);
2738 if (clntsk == NULL || srvrsk == NULL)
2741 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2744 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2747 c = sk_SSL_CIPHER_value(clntsk, i);
2748 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2751 n = strlen(c->name);
2768 * Return the requested servername (SNI) value. Note that the behaviour varies
2770 * - whether this is called by the client or the server,
2771 * - if we are before or during/after the handshake,
2772 * - if a resumption or normal handshake is being attempted/has occurred
2773 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
2775 * Note that only the host_name type is defined (RFC 3546).
2777 const char *SSL_get_servername(const SSL *s, const int type)
2780 * If we don't know if we are the client or the server yet then we assume
2783 int server = s->handshake_func == NULL ? 0 : s->server;
2784 if (type != TLSEXT_NAMETYPE_host_name)
2790 * In TLSv1.3 on the server SNI is not associated with the session
2791 * but in TLSv1.2 or below it is.
2793 * Before the handshake:
2796 * During/after the handshake (TLSv1.2 or below resumption occurred):
2797 * - If a servername was accepted by the server in the original
2798 * handshake then it will return that servername, or NULL otherwise.
2800 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2801 * - The function will return the servername requested by the client in
2802 * this handshake or NULL if none was requested.
2804 if (s->hit && !SSL_IS_TLS13(s))
2805 return s->session->ext.hostname;
2810 * Before the handshake:
2811 * - If a servername has been set via a call to
2812 * SSL_set_tlsext_host_name() then it will return that servername
2813 * - If one has not been set, but a TLSv1.2 resumption is being
2814 * attempted and the session from the original handshake had a
2815 * servername accepted by the server then it will return that
2817 * - Otherwise it returns NULL
2819 * During/after the handshake (TLSv1.2 or below resumption occurred):
2820 * - If the session from the orignal handshake had a servername accepted
2821 * by the server then it will return that servername.
2822 * - Otherwise it returns the servername set via
2823 * SSL_set_tlsext_host_name() (or NULL if it was not called).
2825 * During/after the handshake (TLSv1.2 or below resumption did not occur):
2826 * - It will return the servername set via SSL_set_tlsext_host_name()
2827 * (or NULL if it was not called).
2829 if (SSL_in_before(s)) {
2830 if (s->ext.hostname == NULL
2831 && s->session != NULL
2832 && s->session->ssl_version != TLS1_3_VERSION)
2833 return s->session->ext.hostname;
2835 if (!SSL_IS_TLS13(s) && s->hit && s->session->ext.hostname != NULL)
2836 return s->session->ext.hostname;
2840 return s->ext.hostname;
2843 int SSL_get_servername_type(const SSL *s)
2845 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
2846 return TLSEXT_NAMETYPE_host_name;
2851 * SSL_select_next_proto implements the standard protocol selection. It is
2852 * expected that this function is called from the callback set by
2853 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2854 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2855 * not included in the length. A byte string of length 0 is invalid. No byte
2856 * string may be truncated. The current, but experimental algorithm for
2857 * selecting the protocol is: 1) If the server doesn't support NPN then this
2858 * is indicated to the callback. In this case, the client application has to
2859 * abort the connection or have a default application level protocol. 2) If
2860 * the server supports NPN, but advertises an empty list then the client
2861 * selects the first protocol in its list, but indicates via the API that this
2862 * fallback case was enacted. 3) Otherwise, the client finds the first
2863 * protocol in the server's list that it supports and selects this protocol.
2864 * This is because it's assumed that the server has better information about
2865 * which protocol a client should use. 4) If the client doesn't support any
2866 * of the server's advertised protocols, then this is treated the same as
2867 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2868 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2870 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2871 const unsigned char *server,
2872 unsigned int server_len,
2873 const unsigned char *client, unsigned int client_len)
2876 const unsigned char *result;
2877 int status = OPENSSL_NPN_UNSUPPORTED;
2880 * For each protocol in server preference order, see if we support it.
2882 for (i = 0; i < server_len;) {
2883 for (j = 0; j < client_len;) {
2884 if (server[i] == client[j] &&
2885 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2886 /* We found a match */
2887 result = &server[i];
2888 status = OPENSSL_NPN_NEGOTIATED;
2898 /* There's no overlap between our protocols and the server's list. */
2900 status = OPENSSL_NPN_NO_OVERLAP;
2903 *out = (unsigned char *)result + 1;
2904 *outlen = result[0];
2908 #ifndef OPENSSL_NO_NEXTPROTONEG
2910 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2911 * client's requested protocol for this connection and returns 0. If the
2912 * client didn't request any protocol, then *data is set to NULL. Note that
2913 * the client can request any protocol it chooses. The value returned from
2914 * this function need not be a member of the list of supported protocols
2915 * provided by the callback.
2917 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2921 if (*data == NULL) {
2924 *len = (unsigned int)s->ext.npn_len;
2929 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2930 * a TLS server needs a list of supported protocols for Next Protocol
2931 * Negotiation. The returned list must be in wire format. The list is
2932 * returned by setting |out| to point to it and |outlen| to its length. This
2933 * memory will not be modified, but one should assume that the SSL* keeps a
2934 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2935 * wishes to advertise. Otherwise, no such extension will be included in the
2938 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2939 SSL_CTX_npn_advertised_cb_func cb,
2942 ctx->ext.npn_advertised_cb = cb;
2943 ctx->ext.npn_advertised_cb_arg = arg;
2947 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2948 * client needs to select a protocol from the server's provided list. |out|
2949 * must be set to point to the selected protocol (which may be within |in|).
2950 * The length of the protocol name must be written into |outlen|. The
2951 * server's advertised protocols are provided in |in| and |inlen|. The
2952 * callback can assume that |in| is syntactically valid. The client must
2953 * select a protocol. It is fatal to the connection if this callback returns
2954 * a value other than SSL_TLSEXT_ERR_OK.
2956 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2957 SSL_CTX_npn_select_cb_func cb,
2960 ctx->ext.npn_select_cb = cb;
2961 ctx->ext.npn_select_cb_arg = arg;
2966 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2967 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2968 * length-prefixed strings). Returns 0 on success.
2970 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2971 unsigned int protos_len)
2973 OPENSSL_free(ctx->ext.alpn);
2974 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2975 if (ctx->ext.alpn == NULL) {
2976 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2979 ctx->ext.alpn_len = protos_len;
2985 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2986 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2987 * length-prefixed strings). Returns 0 on success.
2989 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2990 unsigned int protos_len)
2992 OPENSSL_free(ssl->ext.alpn);
2993 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2994 if (ssl->ext.alpn == NULL) {
2995 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2998 ssl->ext.alpn_len = protos_len;
3004 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3005 * called during ClientHello processing in order to select an ALPN protocol
3006 * from the client's list of offered protocols.
3008 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3009 SSL_CTX_alpn_select_cb_func cb,
3012 ctx->ext.alpn_select_cb = cb;
3013 ctx->ext.alpn_select_cb_arg = arg;
3017 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3018 * On return it sets |*data| to point to |*len| bytes of protocol name
3019 * (not including the leading length-prefix byte). If the server didn't
3020 * respond with a negotiated protocol then |*len| will be zero.
3022 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3025 *data = ssl->s3.alpn_selected;
3029 *len = (unsigned int)ssl->s3.alpn_selected_len;
3032 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3033 const char *label, size_t llen,
3034 const unsigned char *context, size_t contextlen,
3037 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
3040 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
3042 contextlen, use_context);
3045 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3046 const char *label, size_t llen,
3047 const unsigned char *context,
3050 if (s->version != TLS1_3_VERSION)
3053 return tls13_export_keying_material_early(s, out, olen, label, llen,
3054 context, contextlen);
3057 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3059 const unsigned char *session_id = a->session_id;
3061 unsigned char tmp_storage[4];
3063 if (a->session_id_length < sizeof(tmp_storage)) {
3064 memset(tmp_storage, 0, sizeof(tmp_storage));
3065 memcpy(tmp_storage, a->session_id, a->session_id_length);
3066 session_id = tmp_storage;
3070 ((unsigned long)session_id[0]) |
3071 ((unsigned long)session_id[1] << 8L) |
3072 ((unsigned long)session_id[2] << 16L) |
3073 ((unsigned long)session_id[3] << 24L);
3078 * NB: If this function (or indeed the hash function which uses a sort of
3079 * coarser function than this one) is changed, ensure
3080 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3081 * being able to construct an SSL_SESSION that will collide with any existing
3082 * session with a matching session ID.
3084 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3086 if (a->ssl_version != b->ssl_version)
3088 if (a->session_id_length != b->session_id_length)
3090 return memcmp(a->session_id, b->session_id, a->session_id_length);
3094 * These wrapper functions should remain rather than redeclaring
3095 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3096 * variable. The reason is that the functions aren't static, they're exposed
3100 SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3101 const SSL_METHOD *meth)
3103 SSL_CTX *ret = NULL;
3106 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
3110 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3113 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3114 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3117 ret = OPENSSL_zalloc(sizeof(*ret));
3121 ret->libctx = libctx;
3122 if (propq != NULL) {
3123 ret->propq = OPENSSL_strdup(propq);
3124 if (ret->propq == NULL)
3129 ret->min_proto_version = 0;
3130 ret->max_proto_version = 0;
3131 ret->mode = SSL_MODE_AUTO_RETRY;
3132 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3133 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3134 /* We take the system default. */
3135 ret->session_timeout = meth->get_timeout();
3136 ret->references = 1;
3137 ret->lock = CRYPTO_THREAD_lock_new();
3138 if (ret->lock == NULL) {
3139 SSLerr(0, ERR_R_MALLOC_FAILURE);
3143 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3144 ret->verify_mode = SSL_VERIFY_NONE;
3145 if ((ret->cert = ssl_cert_new()) == NULL)
3148 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3149 if (ret->sessions == NULL)
3151 ret->cert_store = X509_STORE_new();
3152 if (ret->cert_store == NULL)
3154 #ifndef OPENSSL_NO_CT
3155 ret->ctlog_store = CTLOG_STORE_new_with_libctx(libctx, propq);
3156 if (ret->ctlog_store == NULL)
3160 /* initialize cipher/digest methods table */
3161 if (!ssl_load_ciphers(ret))
3163 /* initialise sig algs */
3164 if (!ssl_setup_sig_algs(ret))
3168 if (!ssl_load_groups(ret))
3171 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3174 if (!ssl_create_cipher_list(ret->method,
3175 ret->tls13_ciphersuites,
3176 &ret->cipher_list, &ret->cipher_list_by_id,
3177 OSSL_default_cipher_list(), ret->cert)
3178 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3179 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3183 ret->param = X509_VERIFY_PARAM_new();
3184 if (ret->param == NULL)
3188 * If these aren't available from the provider we'll get NULL returns.
3189 * That's fine but will cause errors later if SSLv3 is negotiated
3191 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3192 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3194 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3197 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3200 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3203 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3206 /* No compression for DTLS */
3207 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3208 ret->comp_methods = SSL_COMP_get_compression_methods();
3210 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3211 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3213 /* Setup RFC5077 ticket keys */
3214 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3215 sizeof(ret->ext.tick_key_name)) <= 0)
3216 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3217 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3218 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3219 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3220 ret->options |= SSL_OP_NO_TICKET;
3222 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3223 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3226 #ifndef OPENSSL_NO_SRP
3227 if (!SSL_CTX_SRP_CTX_init(ret))
3230 #ifndef OPENSSL_NO_ENGINE
3231 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3232 # define eng_strx(x) #x
3233 # define eng_str(x) eng_strx(x)
3234 /* Use specific client engine automatically... ignore errors */
3237 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3240 ENGINE_load_builtin_engines();
3241 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3243 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3249 * Default is to connect to non-RI servers. When RI is more widely
3250 * deployed might change this.
3252 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3254 * Disable compression by default to prevent CRIME. Applications can
3255 * re-enable compression by configuring
3256 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3257 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3258 * middlebox compatibility by default. This may be disabled by default in
3259 * a later OpenSSL version.
3261 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3263 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3266 * We cannot usefully set a default max_early_data here (which gets
3267 * propagated in SSL_new(), for the following reason: setting the
3268 * SSL field causes tls_construct_stoc_early_data() to tell the
3269 * client that early data will be accepted when constructing a TLS 1.3
3270 * session ticket, and the client will accordingly send us early data
3271 * when using that ticket (if the client has early data to send).
3272 * However, in order for the early data to actually be consumed by
3273 * the application, the application must also have calls to
3274 * SSL_read_early_data(); otherwise we'll just skip past the early data
3275 * and ignore it. So, since the application must add calls to
3276 * SSL_read_early_data(), we also require them to add
3277 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3278 * eliminating the bandwidth-wasting early data in the case described
3281 ret->max_early_data = 0;
3284 * Default recv_max_early_data is a fully loaded single record. Could be
3285 * split across multiple records in practice. We set this differently to
3286 * max_early_data so that, in the default case, we do not advertise any
3287 * support for early_data, but if a client were to send us some (e.g.
3288 * because of an old, stale ticket) then we will tolerate it and skip over
3291 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3293 /* By default we send two session tickets automatically in TLSv1.3 */
3294 ret->num_tickets = 2;
3296 ssl_ctx_system_config(ret);
3300 SSLerr(0, ERR_R_MALLOC_FAILURE);
3306 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3308 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3311 int SSL_CTX_up_ref(SSL_CTX *ctx)
3315 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3318 REF_PRINT_COUNT("SSL_CTX", ctx);
3319 REF_ASSERT_ISNT(i < 2);
3320 return ((i > 1) ? 1 : 0);
3323 void SSL_CTX_free(SSL_CTX *a)
3331 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3332 REF_PRINT_COUNT("SSL_CTX", a);
3335 REF_ASSERT_ISNT(i < 0);
3337 X509_VERIFY_PARAM_free(a->param);
3338 dane_ctx_final(&a->dane);
3341 * Free internal session cache. However: the remove_cb() may reference
3342 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3343 * after the sessions were flushed.
3344 * As the ex_data handling routines might also touch the session cache,
3345 * the most secure solution seems to be: empty (flush) the cache, then
3346 * free ex_data, then finally free the cache.
3347 * (See ticket [openssl.org #212].)
3349 if (a->sessions != NULL)
3350 SSL_CTX_flush_sessions(a, 0);
3352 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3353 lh_SSL_SESSION_free(a->sessions);
3354 X509_STORE_free(a->cert_store);
3355 #ifndef OPENSSL_NO_CT
3356 CTLOG_STORE_free(a->ctlog_store);
3358 sk_SSL_CIPHER_free(a->cipher_list);
3359 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3360 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3361 ssl_cert_free(a->cert);
3362 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3363 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3364 sk_X509_pop_free(a->extra_certs, X509_free);
3365 a->comp_methods = NULL;
3366 #ifndef OPENSSL_NO_SRTP
3367 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3369 #ifndef OPENSSL_NO_SRP
3370 SSL_CTX_SRP_CTX_free(a);
3372 #ifndef OPENSSL_NO_ENGINE
3373 ENGINE_finish(a->client_cert_engine);
3376 #ifndef OPENSSL_NO_EC
3377 OPENSSL_free(a->ext.ecpointformats);
3379 OPENSSL_free(a->ext.supportedgroups);
3380 OPENSSL_free(a->ext.alpn);
3381 OPENSSL_secure_free(a->ext.secure);
3383 ssl_evp_md_free(a->md5);
3384 ssl_evp_md_free(a->sha1);
3386 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3387 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3388 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3389 ssl_evp_md_free(a->ssl_digest_methods[j]);
3390 for (j = 0; j < a->group_list_len; j++) {
3391 OPENSSL_free(a->group_list[j].tlsname);
3392 OPENSSL_free(a->group_list[j].realname);
3393 OPENSSL_free(a->group_list[j].algorithm);
3395 OPENSSL_free(a->group_list);
3397 OPENSSL_free(a->sigalg_lookup_cache);
3399 CRYPTO_THREAD_lock_free(a->lock);
3401 OPENSSL_free(a->propq);
3406 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3408 ctx->default_passwd_callback = cb;
3411 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3413 ctx->default_passwd_callback_userdata = u;
3416 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3418 return ctx->default_passwd_callback;
3421 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3423 return ctx->default_passwd_callback_userdata;
3426 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3428 s->default_passwd_callback = cb;
3431 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3433 s->default_passwd_callback_userdata = u;
3436 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3438 return s->default_passwd_callback;
3441 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3443 return s->default_passwd_callback_userdata;
3446 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3447 int (*cb) (X509_STORE_CTX *, void *),
3450 ctx->app_verify_callback = cb;
3451 ctx->app_verify_arg = arg;
3454 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3455 int (*cb) (int, X509_STORE_CTX *))
3457 ctx->verify_mode = mode;
3458 ctx->default_verify_callback = cb;
3461 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3463 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3466 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3468 ssl_cert_set_cert_cb(c->cert, cb, arg);
3471 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3473 ssl_cert_set_cert_cb(s->cert, cb, arg);
3476 void ssl_set_masks(SSL *s)
3479 uint32_t *pvalid = s->s3.tmp.valid_flags;
3480 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3481 unsigned long mask_k, mask_a;
3482 #ifndef OPENSSL_NO_EC
3483 int have_ecc_cert, ecdsa_ok;
3488 #ifndef OPENSSL_NO_DH
3489 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3494 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3495 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3496 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3497 #ifndef OPENSSL_NO_EC
3498 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3503 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3504 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3506 #ifndef OPENSSL_NO_GOST
3507 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3508 mask_k |= SSL_kGOST | SSL_kGOST18;
3509 mask_a |= SSL_aGOST12;
3511 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3512 mask_k |= SSL_kGOST | SSL_kGOST18;
3513 mask_a |= SSL_aGOST12;
3515 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3516 mask_k |= SSL_kGOST;
3517 mask_a |= SSL_aGOST01;
3528 * If we only have an RSA-PSS certificate allow RSA authentication
3529 * if TLS 1.2 and peer supports it.
3532 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3533 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3534 && TLS1_get_version(s) == TLS1_2_VERSION))
3541 mask_a |= SSL_aNULL;
3544 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3545 * depending on the key usage extension.
3547 #ifndef OPENSSL_NO_EC
3548 if (have_ecc_cert) {
3550 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3551 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3552 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3555 mask_a |= SSL_aECDSA;
3557 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3558 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3559 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3560 && TLS1_get_version(s) == TLS1_2_VERSION)
3561 mask_a |= SSL_aECDSA;
3563 /* Allow Ed448 for TLS 1.2 if peer supports it */
3564 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3565 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3566 && TLS1_get_version(s) == TLS1_2_VERSION)
3567 mask_a |= SSL_aECDSA;
3570 #ifndef OPENSSL_NO_EC
3571 mask_k |= SSL_kECDHE;
3574 #ifndef OPENSSL_NO_PSK
3577 if (mask_k & SSL_kRSA)
3578 mask_k |= SSL_kRSAPSK;
3579 if (mask_k & SSL_kDHE)
3580 mask_k |= SSL_kDHEPSK;
3581 if (mask_k & SSL_kECDHE)
3582 mask_k |= SSL_kECDHEPSK;
3585 s->s3.tmp.mask_k = mask_k;
3586 s->s3.tmp.mask_a = mask_a;
3589 #ifndef OPENSSL_NO_EC
3591 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3593 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3594 /* key usage, if present, must allow signing */
3595 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3596 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3597 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3601 return 1; /* all checks are ok */
3606 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3607 size_t *serverinfo_length)
3609 CERT_PKEY *cpk = s->s3.tmp.cert;
3610 *serverinfo_length = 0;
3612 if (cpk == NULL || cpk->serverinfo == NULL)
3615 *serverinfo = cpk->serverinfo;
3616 *serverinfo_length = cpk->serverinfo_length;
3620 void ssl_update_cache(SSL *s, int mode)
3625 * If the session_id_length is 0, we are not supposed to cache it, and it
3626 * would be rather hard to do anyway :-)
3628 if (s->session->session_id_length == 0)
3632 * If sid_ctx_length is 0 there is no specific application context
3633 * associated with this session, so when we try to resume it and
3634 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3635 * indication that this is actually a session for the proper application
3636 * context, and the *handshake* will fail, not just the resumption attempt.
3637 * Do not cache (on the server) these sessions that are not resumable
3638 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3640 if (s->server && s->session->sid_ctx_length == 0
3641 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3644 i = s->session_ctx->session_cache_mode;
3646 && (!s->hit || SSL_IS_TLS13(s))) {
3648 * Add the session to the internal cache. In server side TLSv1.3 we
3649 * normally don't do this because by default it's a full stateless ticket
3650 * with only a dummy session id so there is no reason to cache it,
3652 * - we are doing early_data, in which case we cache so that we can
3654 * - the application has set a remove_session_cb so needs to know about
3655 * session timeout events
3656 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3658 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3659 && (!SSL_IS_TLS13(s)
3661 || (s->max_early_data > 0
3662 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3663 || s->session_ctx->remove_session_cb != NULL
3664 || (s->options & SSL_OP_NO_TICKET) != 0))
3665 SSL_CTX_add_session(s->session_ctx, s->session);
3668 * Add the session to the external cache. We do this even in server side
3669 * TLSv1.3 without early data because some applications just want to
3670 * know about the creation of a session and aren't doing a full cache.
3672 if (s->session_ctx->new_session_cb != NULL) {
3673 SSL_SESSION_up_ref(s->session);
3674 if (!s->session_ctx->new_session_cb(s, s->session))
3675 SSL_SESSION_free(s->session);
3679 /* auto flush every 255 connections */
3680 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3681 TSAN_QUALIFIER int *stat;
3682 if (mode & SSL_SESS_CACHE_CLIENT)
3683 stat = &s->session_ctx->stats.sess_connect_good;
3685 stat = &s->session_ctx->stats.sess_accept_good;
3686 if ((tsan_load(stat) & 0xff) == 0xff)
3687 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3691 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3696 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3701 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3705 if (s->method != meth) {
3706 const SSL_METHOD *sm = s->method;
3707 int (*hf) (SSL *) = s->handshake_func;
3709 if (sm->version == meth->version)
3714 ret = s->method->ssl_new(s);
3717 if (hf == sm->ssl_connect)
3718 s->handshake_func = meth->ssl_connect;
3719 else if (hf == sm->ssl_accept)
3720 s->handshake_func = meth->ssl_accept;
3725 int SSL_get_error(const SSL *s, int i)
3732 return SSL_ERROR_NONE;
3735 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3736 * where we do encode the error
3738 if ((l = ERR_peek_error()) != 0) {
3739 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3740 return SSL_ERROR_SYSCALL;
3742 return SSL_ERROR_SSL;
3745 if (SSL_want_read(s)) {
3746 bio = SSL_get_rbio(s);
3747 if (BIO_should_read(bio))
3748 return SSL_ERROR_WANT_READ;
3749 else if (BIO_should_write(bio))
3751 * This one doesn't make too much sense ... We never try to write
3752 * to the rbio, and an application program where rbio and wbio
3753 * are separate couldn't even know what it should wait for.
3754 * However if we ever set s->rwstate incorrectly (so that we have
3755 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3756 * wbio *are* the same, this test works around that bug; so it
3757 * might be safer to keep it.
3759 return SSL_ERROR_WANT_WRITE;
3760 else if (BIO_should_io_special(bio)) {
3761 reason = BIO_get_retry_reason(bio);
3762 if (reason == BIO_RR_CONNECT)
3763 return SSL_ERROR_WANT_CONNECT;
3764 else if (reason == BIO_RR_ACCEPT)
3765 return SSL_ERROR_WANT_ACCEPT;
3767 return SSL_ERROR_SYSCALL; /* unknown */
3771 if (SSL_want_write(s)) {
3772 /* Access wbio directly - in order to use the buffered bio if present */
3774 if (BIO_should_write(bio))
3775 return SSL_ERROR_WANT_WRITE;
3776 else if (BIO_should_read(bio))
3778 * See above (SSL_want_read(s) with BIO_should_write(bio))
3780 return SSL_ERROR_WANT_READ;
3781 else if (BIO_should_io_special(bio)) {
3782 reason = BIO_get_retry_reason(bio);
3783 if (reason == BIO_RR_CONNECT)
3784 return SSL_ERROR_WANT_CONNECT;
3785 else if (reason == BIO_RR_ACCEPT)
3786 return SSL_ERROR_WANT_ACCEPT;
3788 return SSL_ERROR_SYSCALL;
3791 if (SSL_want_x509_lookup(s))
3792 return SSL_ERROR_WANT_X509_LOOKUP;
3793 if (SSL_want_async(s))
3794 return SSL_ERROR_WANT_ASYNC;
3795 if (SSL_want_async_job(s))
3796 return SSL_ERROR_WANT_ASYNC_JOB;
3797 if (SSL_want_client_hello_cb(s))
3798 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3800 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3801 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3802 return SSL_ERROR_ZERO_RETURN;
3804 return SSL_ERROR_SYSCALL;
3807 static int ssl_do_handshake_intern(void *vargs)
3809 struct ssl_async_args *args;
3812 args = (struct ssl_async_args *)vargs;
3815 return s->handshake_func(s);
3818 int SSL_do_handshake(SSL *s)
3822 if (s->handshake_func == NULL) {
3823 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3827 ossl_statem_check_finish_init(s, -1);
3829 s->method->ssl_renegotiate_check(s, 0);
3831 if (SSL_in_init(s) || SSL_in_before(s)) {
3832 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3833 struct ssl_async_args args;
3837 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3839 ret = s->handshake_func(s);
3845 void SSL_set_accept_state(SSL *s)
3849 ossl_statem_clear(s);
3850 s->handshake_func = s->method->ssl_accept;
3854 void SSL_set_connect_state(SSL *s)
3858 ossl_statem_clear(s);
3859 s->handshake_func = s->method->ssl_connect;
3863 int ssl_undefined_function(SSL *s)
3865 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3869 int ssl_undefined_void_function(void)
3871 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3872 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3876 int ssl_undefined_const_function(const SSL *s)
3881 const SSL_METHOD *ssl_bad_method(int ver)
3883 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3887 const char *ssl_protocol_to_string(int version)
3891 case TLS1_3_VERSION:
3894 case TLS1_2_VERSION:
3897 case TLS1_1_VERSION:
3912 case DTLS1_2_VERSION:
3920 const char *SSL_get_version(const SSL *s)
3922 return ssl_protocol_to_string(s->version);
3925 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3927 STACK_OF(X509_NAME) *sk;
3936 if ((sk = sk_X509_NAME_new_null()) == NULL)
3938 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3939 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3941 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3944 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3946 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3955 SSL *SSL_dup(SSL *s)
3960 /* If we're not quiescent, just up_ref! */
3961 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3962 CRYPTO_UP_REF(&s->references, &i, s->lock);
3967 * Otherwise, copy configuration state, and session if set.
3969 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3972 if (s->session != NULL) {
3974 * Arranges to share the same session via up_ref. This "copies"
3975 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3977 if (!SSL_copy_session_id(ret, s))
3981 * No session has been established yet, so we have to expect that
3982 * s->cert or ret->cert will be changed later -- they should not both
3983 * point to the same object, and thus we can't use
3984 * SSL_copy_session_id.
3986 if (!SSL_set_ssl_method(ret, s->method))
3989 if (s->cert != NULL) {
3990 ssl_cert_free(ret->cert);
3991 ret->cert = ssl_cert_dup(s->cert);
3992 if (ret->cert == NULL)
3996 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3997 (int)s->sid_ctx_length))
4001 if (!ssl_dane_dup(ret, s))
4003 ret->version = s->version;
4004 ret->options = s->options;
4005 ret->min_proto_version = s->min_proto_version;
4006 ret->max_proto_version = s->max_proto_version;
4007 ret->mode = s->mode;
4008 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4009 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4010 ret->msg_callback = s->msg_callback;
4011 ret->msg_callback_arg = s->msg_callback_arg;
4012 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4013 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4014 ret->generate_session_id = s->generate_session_id;
4016 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4018 /* copy app data, a little dangerous perhaps */
4019 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4022 ret->server = s->server;
4023 if (s->handshake_func) {
4025 SSL_set_accept_state(ret);
4027 SSL_set_connect_state(ret);
4029 ret->shutdown = s->shutdown;
4032 ret->default_passwd_callback = s->default_passwd_callback;
4033 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
4035 X509_VERIFY_PARAM_inherit(ret->param, s->param);
4037 /* dup the cipher_list and cipher_list_by_id stacks */
4038 if (s->cipher_list != NULL) {
4039 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
4042 if (s->cipher_list_by_id != NULL)
4043 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
4047 /* Dup the client_CA list */
4048 if (!dup_ca_names(&ret->ca_names, s->ca_names)
4049 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
4059 void ssl_clear_cipher_ctx(SSL *s)
4061 if (s->enc_read_ctx != NULL) {
4062 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4063 s->enc_read_ctx = NULL;
4065 if (s->enc_write_ctx != NULL) {
4066 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4067 s->enc_write_ctx = NULL;
4069 #ifndef OPENSSL_NO_COMP
4070 COMP_CTX_free(s->expand);
4072 COMP_CTX_free(s->compress);
4077 X509 *SSL_get_certificate(const SSL *s)
4079 if (s->cert != NULL)
4080 return s->cert->key->x509;
4085 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4087 if (s->cert != NULL)
4088 return s->cert->key->privatekey;
4093 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4095 if (ctx->cert != NULL)
4096 return ctx->cert->key->x509;
4101 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4103 if (ctx->cert != NULL)
4104 return ctx->cert->key->privatekey;
4109 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4111 if ((s->session != NULL) && (s->session->cipher != NULL))
4112 return s->session->cipher;
4116 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4118 return s->s3.tmp.new_cipher;
4121 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4123 #ifndef OPENSSL_NO_COMP
4124 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4130 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4132 #ifndef OPENSSL_NO_COMP
4133 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4139 int ssl_init_wbio_buffer(SSL *s)
4143 if (s->bbio != NULL) {
4144 /* Already buffered. */
4148 bbio = BIO_new(BIO_f_buffer());
4149 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4151 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4155 s->wbio = BIO_push(bbio, s->wbio);
4160 int ssl_free_wbio_buffer(SSL *s)
4162 /* callers ensure s is never null */
4163 if (s->bbio == NULL)
4166 s->wbio = BIO_pop(s->wbio);
4173 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4175 ctx->quiet_shutdown = mode;
4178 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4180 return ctx->quiet_shutdown;
4183 void SSL_set_quiet_shutdown(SSL *s, int mode)
4185 s->quiet_shutdown = mode;
4188 int SSL_get_quiet_shutdown(const SSL *s)
4190 return s->quiet_shutdown;
4193 void SSL_set_shutdown(SSL *s, int mode)
4198 int SSL_get_shutdown(const SSL *s)
4203 int SSL_version(const SSL *s)
4208 int SSL_client_version(const SSL *s)
4210 return s->client_version;
4213 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4218 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4221 if (ssl->ctx == ctx)
4224 ctx = ssl->session_ctx;
4225 new_cert = ssl_cert_dup(ctx->cert);
4226 if (new_cert == NULL) {
4230 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4231 ssl_cert_free(new_cert);
4235 ssl_cert_free(ssl->cert);
4236 ssl->cert = new_cert;
4239 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4240 * so setter APIs must prevent invalid lengths from entering the system.
4242 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4246 * If the session ID context matches that of the parent SSL_CTX,
4247 * inherit it from the new SSL_CTX as well. If however the context does
4248 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4249 * leave it unchanged.
4251 if ((ssl->ctx != NULL) &&
4252 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4253 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4254 ssl->sid_ctx_length = ctx->sid_ctx_length;
4255 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4258 SSL_CTX_up_ref(ctx);
4259 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4265 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4267 return X509_STORE_set_default_paths_with_libctx(ctx->cert_store,
4268 ctx->libctx, ctx->propq);
4271 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4273 X509_LOOKUP *lookup;
4275 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4279 /* We ignore errors, in case the directory doesn't exist */
4282 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4289 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4291 X509_LOOKUP *lookup;
4293 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4297 /* We ignore errors, in case the directory doesn't exist */
4300 X509_LOOKUP_load_file_with_libctx(lookup, NULL, X509_FILETYPE_DEFAULT,
4301 ctx->libctx, ctx->propq);
4308 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4310 X509_LOOKUP *lookup;
4312 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4316 /* We ignore errors, in case the directory doesn't exist */
4319 X509_LOOKUP_add_store_with_libctx(lookup, NULL, ctx->libctx, ctx->propq);
4326 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4328 return X509_STORE_load_file_with_libctx(ctx->cert_store, CAfile,
4329 ctx->libctx, ctx->propq);
4332 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4334 return X509_STORE_load_path(ctx->cert_store, CApath);
4337 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4339 return X509_STORE_load_store_with_libctx(ctx->cert_store, CAstore,
4340 ctx->libctx, ctx->propq);
4343 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4346 if (CAfile == NULL && CApath == NULL)
4348 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4350 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4355 void SSL_set_info_callback(SSL *ssl,
4356 void (*cb) (const SSL *ssl, int type, int val))
4358 ssl->info_callback = cb;
4362 * One compiler (Diab DCC) doesn't like argument names in returned function
4365 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4368 return ssl->info_callback;
4371 void SSL_set_verify_result(SSL *ssl, long arg)
4373 ssl->verify_result = arg;
4376 long SSL_get_verify_result(const SSL *ssl)
4378 return ssl->verify_result;
4381 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4384 return sizeof(ssl->s3.client_random);
4385 if (outlen > sizeof(ssl->s3.client_random))
4386 outlen = sizeof(ssl->s3.client_random);
4387 memcpy(out, ssl->s3.client_random, outlen);
4391 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4394 return sizeof(ssl->s3.server_random);
4395 if (outlen > sizeof(ssl->s3.server_random))
4396 outlen = sizeof(ssl->s3.server_random);
4397 memcpy(out, ssl->s3.server_random, outlen);
4401 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4402 unsigned char *out, size_t outlen)
4405 return session->master_key_length;
4406 if (outlen > session->master_key_length)
4407 outlen = session->master_key_length;
4408 memcpy(out, session->master_key, outlen);
4412 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4415 if (len > sizeof(sess->master_key))
4418 memcpy(sess->master_key, in, len);
4419 sess->master_key_length = len;
4424 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4426 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4429 void *SSL_get_ex_data(const SSL *s, int idx)
4431 return CRYPTO_get_ex_data(&s->ex_data, idx);
4434 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4436 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4439 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4441 return CRYPTO_get_ex_data(&s->ex_data, idx);
4444 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4446 return ctx->cert_store;
4449 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4451 X509_STORE_free(ctx->cert_store);
4452 ctx->cert_store = store;
4455 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4458 X509_STORE_up_ref(store);
4459 SSL_CTX_set_cert_store(ctx, store);
4462 int SSL_want(const SSL *s)
4468 * \brief Set the callback for generating temporary DH keys.
4469 * \param ctx the SSL context.
4470 * \param dh the callback
4473 #ifndef OPENSSL_NO_DH
4474 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4475 DH *(*dh) (SSL *ssl, int is_export,
4478 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4481 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4484 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4488 #ifndef OPENSSL_NO_PSK
4489 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4491 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4492 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4495 OPENSSL_free(ctx->cert->psk_identity_hint);
4496 if (identity_hint != NULL) {
4497 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4498 if (ctx->cert->psk_identity_hint == NULL)
4501 ctx->cert->psk_identity_hint = NULL;
4505 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4510 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4511 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4514 OPENSSL_free(s->cert->psk_identity_hint);
4515 if (identity_hint != NULL) {
4516 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4517 if (s->cert->psk_identity_hint == NULL)
4520 s->cert->psk_identity_hint = NULL;
4524 const char *SSL_get_psk_identity_hint(const SSL *s)
4526 if (s == NULL || s->session == NULL)
4528 return s->session->psk_identity_hint;
4531 const char *SSL_get_psk_identity(const SSL *s)
4533 if (s == NULL || s->session == NULL)
4535 return s->session->psk_identity;
4538 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4540 s->psk_client_callback = cb;
4543 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4545 ctx->psk_client_callback = cb;
4548 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4550 s->psk_server_callback = cb;
4553 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4555 ctx->psk_server_callback = cb;
4559 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4561 s->psk_find_session_cb = cb;
4564 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4565 SSL_psk_find_session_cb_func cb)
4567 ctx->psk_find_session_cb = cb;
4570 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4572 s->psk_use_session_cb = cb;
4575 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4576 SSL_psk_use_session_cb_func cb)
4578 ctx->psk_use_session_cb = cb;
4581 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4582 void (*cb) (int write_p, int version,
4583 int content_type, const void *buf,
4584 size_t len, SSL *ssl, void *arg))
4586 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4589 void SSL_set_msg_callback(SSL *ssl,
4590 void (*cb) (int write_p, int version,
4591 int content_type, const void *buf,
4592 size_t len, SSL *ssl, void *arg))
4594 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4597 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4598 int (*cb) (SSL *ssl,
4602 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4603 (void (*)(void))cb);
4606 void SSL_set_not_resumable_session_callback(SSL *ssl,
4607 int (*cb) (SSL *ssl,
4608 int is_forward_secure))
4610 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4611 (void (*)(void))cb);
4614 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4615 size_t (*cb) (SSL *ssl, int type,
4616 size_t len, void *arg))
4618 ctx->record_padding_cb = cb;
4621 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4623 ctx->record_padding_arg = arg;
4626 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4628 return ctx->record_padding_arg;
4631 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4633 /* block size of 0 or 1 is basically no padding */
4634 if (block_size == 1)
4635 ctx->block_padding = 0;
4636 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4637 ctx->block_padding = block_size;
4643 int SSL_set_record_padding_callback(SSL *ssl,
4644 size_t (*cb) (SSL *ssl, int type,
4645 size_t len, void *arg))
4649 b = SSL_get_wbio(ssl);
4650 if (b == NULL || !BIO_get_ktls_send(b)) {
4651 ssl->record_padding_cb = cb;
4657 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4659 ssl->record_padding_arg = arg;
4662 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4664 return ssl->record_padding_arg;
4667 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4669 /* block size of 0 or 1 is basically no padding */
4670 if (block_size == 1)
4671 ssl->block_padding = 0;
4672 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4673 ssl->block_padding = block_size;
4679 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4681 s->num_tickets = num_tickets;
4686 size_t SSL_get_num_tickets(const SSL *s)
4688 return s->num_tickets;
4691 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4693 ctx->num_tickets = num_tickets;
4698 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4700 return ctx->num_tickets;
4704 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4705 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4706 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4707 * Returns the newly allocated ctx;
4710 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4712 ssl_clear_hash_ctx(hash);
4713 *hash = EVP_MD_CTX_new();
4714 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4715 EVP_MD_CTX_free(*hash);
4722 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4725 EVP_MD_CTX_free(*hash);
4729 /* Retrieve handshake hashes */
4730 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4733 EVP_MD_CTX *ctx = NULL;
4734 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4735 int hashleni = EVP_MD_CTX_size(hdgst);
4738 if (hashleni < 0 || (size_t)hashleni > outlen) {
4739 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4740 ERR_R_INTERNAL_ERROR);
4744 ctx = EVP_MD_CTX_new();
4748 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4749 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4750 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4751 ERR_R_INTERNAL_ERROR);
4755 *hashlen = hashleni;
4759 EVP_MD_CTX_free(ctx);
4763 int SSL_session_reused(const SSL *s)
4768 int SSL_is_server(const SSL *s)
4773 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4774 void SSL_set_debug(SSL *s, int debug)
4776 /* Old function was do-nothing anyway... */
4782 void SSL_set_security_level(SSL *s, int level)
4784 s->cert->sec_level = level;
4787 int SSL_get_security_level(const SSL *s)
4789 return s->cert->sec_level;
4792 void SSL_set_security_callback(SSL *s,
4793 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4794 int op, int bits, int nid,
4795 void *other, void *ex))
4797 s->cert->sec_cb = cb;
4800 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4801 const SSL_CTX *ctx, int op,
4802 int bits, int nid, void *other,
4804 return s->cert->sec_cb;
4807 void SSL_set0_security_ex_data(SSL *s, void *ex)
4809 s->cert->sec_ex = ex;
4812 void *SSL_get0_security_ex_data(const SSL *s)
4814 return s->cert->sec_ex;
4817 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4819 ctx->cert->sec_level = level;
4822 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4824 return ctx->cert->sec_level;
4827 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4828 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4829 int op, int bits, int nid,
4830 void *other, void *ex))
4832 ctx->cert->sec_cb = cb;
4835 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4841 return ctx->cert->sec_cb;
4844 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4846 ctx->cert->sec_ex = ex;
4849 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4851 return ctx->cert->sec_ex;
4855 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4856 * can return unsigned long, instead of the generic long return value from the
4857 * control interface.
4859 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4861 return ctx->options;
4864 unsigned long SSL_get_options(const SSL *s)
4869 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4871 return ctx->options |= op;
4874 unsigned long SSL_set_options(SSL *s, unsigned long op)
4876 return s->options |= op;
4879 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4881 return ctx->options &= ~op;
4884 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4886 return s->options &= ~op;
4889 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4891 return s->verified_chain;
4894 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4896 #ifndef OPENSSL_NO_CT
4899 * Moves SCTs from the |src| stack to the |dst| stack.
4900 * The source of each SCT will be set to |origin|.
4901 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4903 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4905 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4906 sct_source_t origin)
4912 *dst = sk_SCT_new_null();
4914 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4919 while ((sct = sk_SCT_pop(src)) != NULL) {
4920 if (SCT_set_source(sct, origin) != 1)
4923 if (sk_SCT_push(*dst, sct) <= 0)
4931 sk_SCT_push(src, sct); /* Put the SCT back */
4936 * Look for data collected during ServerHello and parse if found.
4937 * Returns the number of SCTs extracted.
4939 static int ct_extract_tls_extension_scts(SSL *s)
4941 int scts_extracted = 0;
4943 if (s->ext.scts != NULL) {
4944 const unsigned char *p = s->ext.scts;
4945 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4947 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4949 SCT_LIST_free(scts);
4952 return scts_extracted;
4956 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4957 * contains an SCT X509 extension. They will be stored in |s->scts|.
4959 * - The number of SCTs extracted, assuming an OCSP response exists.
4960 * - 0 if no OCSP response exists or it contains no SCTs.
4961 * - A negative integer if an error occurs.
4963 static int ct_extract_ocsp_response_scts(SSL *s)
4965 # ifndef OPENSSL_NO_OCSP
4966 int scts_extracted = 0;
4967 const unsigned char *p;
4968 OCSP_BASICRESP *br = NULL;
4969 OCSP_RESPONSE *rsp = NULL;
4970 STACK_OF(SCT) *scts = NULL;
4973 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4976 p = s->ext.ocsp.resp;
4977 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4981 br = OCSP_response_get1_basic(rsp);
4985 for (i = 0; i < OCSP_resp_count(br); ++i) {
4986 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4992 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4994 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4995 if (scts_extracted < 0)
4999 SCT_LIST_free(scts);
5000 OCSP_BASICRESP_free(br);
5001 OCSP_RESPONSE_free(rsp);
5002 return scts_extracted;
5004 /* Behave as if no OCSP response exists */
5010 * Attempts to extract SCTs from the peer certificate.
5011 * Return the number of SCTs extracted, or a negative integer if an error
5014 static int ct_extract_x509v3_extension_scts(SSL *s)
5016 int scts_extracted = 0;
5017 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5020 STACK_OF(SCT) *scts =
5021 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5024 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5026 SCT_LIST_free(scts);
5029 return scts_extracted;
5033 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5034 * response (if it exists) and X509v3 extensions in the certificate.
5035 * Returns NULL if an error occurs.
5037 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5039 if (!s->scts_parsed) {
5040 if (ct_extract_tls_extension_scts(s) < 0 ||
5041 ct_extract_ocsp_response_scts(s) < 0 ||
5042 ct_extract_x509v3_extension_scts(s) < 0)
5052 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5053 const STACK_OF(SCT) *scts, void *unused_arg)
5058 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5059 const STACK_OF(SCT) *scts, void *unused_arg)
5061 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5064 for (i = 0; i < count; ++i) {
5065 SCT *sct = sk_SCT_value(scts, i);
5066 int status = SCT_get_validation_status(sct);
5068 if (status == SCT_VALIDATION_STATUS_VALID)
5071 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
5075 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5079 * Since code exists that uses the custom extension handler for CT, look
5080 * for this and throw an error if they have already registered to use CT.
5082 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5083 TLSEXT_TYPE_signed_certificate_timestamp))
5085 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
5086 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5090 if (callback != NULL) {
5092 * If we are validating CT, then we MUST accept SCTs served via OCSP
5094 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5098 s->ct_validation_callback = callback;
5099 s->ct_validation_callback_arg = arg;
5104 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5105 ssl_ct_validation_cb callback, void *arg)
5108 * Since code exists that uses the custom extension handler for CT, look for
5109 * this and throw an error if they have already registered to use CT.
5111 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5112 TLSEXT_TYPE_signed_certificate_timestamp))
5114 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5115 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5119 ctx->ct_validation_callback = callback;
5120 ctx->ct_validation_callback_arg = arg;
5124 int SSL_ct_is_enabled(const SSL *s)
5126 return s->ct_validation_callback != NULL;
5129 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5131 return ctx->ct_validation_callback != NULL;
5134 int ssl_validate_ct(SSL *s)
5137 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5139 SSL_DANE *dane = &s->dane;
5140 CT_POLICY_EVAL_CTX *ctx = NULL;
5141 const STACK_OF(SCT) *scts;
5144 * If no callback is set, the peer is anonymous, or its chain is invalid,
5145 * skip SCT validation - just return success. Applications that continue
5146 * handshakes without certificates, with unverified chains, or pinned leaf
5147 * certificates are outside the scope of the WebPKI and CT.
5149 * The above exclusions notwithstanding the vast majority of peers will
5150 * have rather ordinary certificate chains validated by typical
5151 * applications that perform certificate verification and therefore will
5152 * process SCTs when enabled.
5154 if (s->ct_validation_callback == NULL || cert == NULL ||
5155 s->verify_result != X509_V_OK ||
5156 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5160 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5161 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5163 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5164 switch (dane->mtlsa->usage) {
5165 case DANETLS_USAGE_DANE_TA:
5166 case DANETLS_USAGE_DANE_EE:
5171 ctx = CT_POLICY_EVAL_CTX_new_with_libctx(s->ctx->libctx, s->ctx->propq);
5173 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5174 ERR_R_MALLOC_FAILURE);
5178 issuer = sk_X509_value(s->verified_chain, 1);
5179 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5180 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5181 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5182 CT_POLICY_EVAL_CTX_set_time(
5183 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5185 scts = SSL_get0_peer_scts(s);
5188 * This function returns success (> 0) only when all the SCTs are valid, 0
5189 * when some are invalid, and < 0 on various internal errors (out of
5190 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5191 * reason to abort the handshake, that decision is up to the callback.
5192 * Therefore, we error out only in the unexpected case that the return
5193 * value is negative.
5195 * XXX: One might well argue that the return value of this function is an
5196 * unfortunate design choice. Its job is only to determine the validation
5197 * status of each of the provided SCTs. So long as it correctly separates
5198 * the wheat from the chaff it should return success. Failure in this case
5199 * ought to correspond to an inability to carry out its duties.
5201 if (SCT_LIST_validate(scts, ctx) < 0) {
5202 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5203 SSL_R_SCT_VERIFICATION_FAILED);
5207 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5209 ret = 0; /* This function returns 0 on failure */
5211 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5212 SSL_R_CALLBACK_FAILED);
5215 CT_POLICY_EVAL_CTX_free(ctx);
5217 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5218 * failure return code here. Also the application may wish the complete
5219 * the handshake, and then disconnect cleanly at a higher layer, after
5220 * checking the verification status of the completed connection.
5222 * We therefore force a certificate verification failure which will be
5223 * visible via SSL_get_verify_result() and cached as part of any resumed
5226 * Note: the permissive callback is for information gathering only, always
5227 * returns success, and does not affect verification status. Only the
5228 * strict callback or a custom application-specified callback can trigger
5229 * connection failure or record a verification error.
5232 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5236 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5238 switch (validation_mode) {
5240 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5242 case SSL_CT_VALIDATION_PERMISSIVE:
5243 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5244 case SSL_CT_VALIDATION_STRICT:
5245 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5249 int SSL_enable_ct(SSL *s, int validation_mode)
5251 switch (validation_mode) {
5253 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5255 case SSL_CT_VALIDATION_PERMISSIVE:
5256 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5257 case SSL_CT_VALIDATION_STRICT:
5258 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5262 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5264 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5267 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5269 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5272 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5274 CTLOG_STORE_free(ctx->ctlog_store);
5275 ctx->ctlog_store = logs;
5278 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5280 return ctx->ctlog_store;
5283 #endif /* OPENSSL_NO_CT */
5285 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5288 c->client_hello_cb = cb;
5289 c->client_hello_cb_arg = arg;
5292 int SSL_client_hello_isv2(SSL *s)
5294 if (s->clienthello == NULL)
5296 return s->clienthello->isv2;
5299 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5301 if (s->clienthello == NULL)
5303 return s->clienthello->legacy_version;
5306 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5308 if (s->clienthello == NULL)
5311 *out = s->clienthello->random;
5312 return SSL3_RANDOM_SIZE;
5315 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5317 if (s->clienthello == NULL)
5320 *out = s->clienthello->session_id;
5321 return s->clienthello->session_id_len;
5324 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5326 if (s->clienthello == NULL)
5329 *out = PACKET_data(&s->clienthello->ciphersuites);
5330 return PACKET_remaining(&s->clienthello->ciphersuites);
5333 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5335 if (s->clienthello == NULL)
5338 *out = s->clienthello->compressions;
5339 return s->clienthello->compressions_len;
5342 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5348 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5350 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5351 ext = s->clienthello->pre_proc_exts + i;
5360 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5361 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5362 ERR_R_MALLOC_FAILURE);
5365 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5366 ext = s->clienthello->pre_proc_exts + i;
5368 if (ext->received_order >= num)
5370 present[ext->received_order] = ext->type;
5377 OPENSSL_free(present);
5381 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5387 if (s->clienthello == NULL)
5389 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5390 r = s->clienthello->pre_proc_exts + i;
5391 if (r->present && r->type == type) {
5393 *out = PACKET_data(&r->data);
5395 *outlen = PACKET_remaining(&r->data);
5402 int SSL_free_buffers(SSL *ssl)
5404 RECORD_LAYER *rl = &ssl->rlayer;
5406 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5409 RECORD_LAYER_release(rl);
5413 int SSL_alloc_buffers(SSL *ssl)
5415 return ssl3_setup_buffers(ssl);
5418 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5420 ctx->keylog_callback = cb;
5423 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5425 return ctx->keylog_callback;
5428 static int nss_keylog_int(const char *prefix,
5430 const uint8_t *parameter_1,
5431 size_t parameter_1_len,
5432 const uint8_t *parameter_2,
5433 size_t parameter_2_len)
5436 char *cursor = NULL;
5441 if (ssl->ctx->keylog_callback == NULL)
5445 * Our output buffer will contain the following strings, rendered with
5446 * space characters in between, terminated by a NULL character: first the
5447 * prefix, then the first parameter, then the second parameter. The
5448 * meaning of each parameter depends on the specific key material being
5449 * logged. Note that the first and second parameters are encoded in
5450 * hexadecimal, so we need a buffer that is twice their lengths.
5452 prefix_len = strlen(prefix);
5453 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5454 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5455 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5456 ERR_R_MALLOC_FAILURE);
5460 strcpy(cursor, prefix);
5461 cursor += prefix_len;
5464 for (i = 0; i < parameter_1_len; i++) {
5465 sprintf(cursor, "%02x", parameter_1[i]);
5470 for (i = 0; i < parameter_2_len; i++) {
5471 sprintf(cursor, "%02x", parameter_2[i]);
5476 ssl->ctx->keylog_callback(ssl, (const char *)out);
5477 OPENSSL_clear_free(out, out_len);
5482 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5483 const uint8_t *encrypted_premaster,
5484 size_t encrypted_premaster_len,
5485 const uint8_t *premaster,
5486 size_t premaster_len)
5488 if (encrypted_premaster_len < 8) {
5489 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5490 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5494 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5495 return nss_keylog_int("RSA",
5497 encrypted_premaster,
5503 int ssl_log_secret(SSL *ssl,
5505 const uint8_t *secret,
5508 return nss_keylog_int(label,
5510 ssl->s3.client_random,
5516 #define SSLV2_CIPHER_LEN 3
5518 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5522 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5524 if (PACKET_remaining(cipher_suites) == 0) {
5525 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5526 SSL_R_NO_CIPHERS_SPECIFIED);
5530 if (PACKET_remaining(cipher_suites) % n != 0) {
5531 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5532 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5536 OPENSSL_free(s->s3.tmp.ciphers_raw);
5537 s->s3.tmp.ciphers_raw = NULL;
5538 s->s3.tmp.ciphers_rawlen = 0;
5541 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5542 PACKET sslv2ciphers = *cipher_suites;
5543 unsigned int leadbyte;
5547 * We store the raw ciphers list in SSLv3+ format so we need to do some
5548 * preprocessing to convert the list first. If there are any SSLv2 only
5549 * ciphersuites with a non-zero leading byte then we are going to
5550 * slightly over allocate because we won't store those. But that isn't a
5553 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5554 s->s3.tmp.ciphers_raw = raw;
5556 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5557 ERR_R_MALLOC_FAILURE);
5560 for (s->s3.tmp.ciphers_rawlen = 0;
5561 PACKET_remaining(&sslv2ciphers) > 0;
5562 raw += TLS_CIPHER_LEN) {
5563 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5565 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5568 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5569 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5571 OPENSSL_free(s->s3.tmp.ciphers_raw);
5572 s->s3.tmp.ciphers_raw = NULL;
5573 s->s3.tmp.ciphers_rawlen = 0;
5577 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5579 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5580 &s->s3.tmp.ciphers_rawlen)) {
5581 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5582 ERR_R_INTERNAL_ERROR);
5588 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5589 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5590 STACK_OF(SSL_CIPHER) **scsvs)
5594 if (!PACKET_buf_init(&pkt, bytes, len))
5596 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5599 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5600 STACK_OF(SSL_CIPHER) **skp,
5601 STACK_OF(SSL_CIPHER) **scsvs_out,
5602 int sslv2format, int fatal)
5604 const SSL_CIPHER *c;
5605 STACK_OF(SSL_CIPHER) *sk = NULL;
5606 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5608 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5609 unsigned char cipher[SSLV2_CIPHER_LEN];
5611 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5613 if (PACKET_remaining(cipher_suites) == 0) {
5615 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5616 SSL_R_NO_CIPHERS_SPECIFIED);
5618 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5622 if (PACKET_remaining(cipher_suites) % n != 0) {
5624 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5625 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5627 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5628 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5632 sk = sk_SSL_CIPHER_new_null();
5633 scsvs = sk_SSL_CIPHER_new_null();
5634 if (sk == NULL || scsvs == NULL) {
5636 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5637 ERR_R_MALLOC_FAILURE);
5639 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5643 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5645 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5646 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5647 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5649 if (sslv2format && cipher[0] != '\0')
5652 /* For SSLv2-compat, ignore leading 0-byte. */
5653 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5655 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5656 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5658 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5659 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5661 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5666 if (PACKET_remaining(cipher_suites) > 0) {
5668 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5671 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5678 sk_SSL_CIPHER_free(sk);
5679 if (scsvs_out != NULL)
5682 sk_SSL_CIPHER_free(scsvs);
5685 sk_SSL_CIPHER_free(sk);
5686 sk_SSL_CIPHER_free(scsvs);
5690 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5692 ctx->max_early_data = max_early_data;
5697 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5699 return ctx->max_early_data;
5702 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5704 s->max_early_data = max_early_data;
5709 uint32_t SSL_get_max_early_data(const SSL *s)
5711 return s->max_early_data;
5714 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5716 ctx->recv_max_early_data = recv_max_early_data;
5721 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5723 return ctx->recv_max_early_data;
5726 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5728 s->recv_max_early_data = recv_max_early_data;
5733 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5735 return s->recv_max_early_data;
5738 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5740 /* Return any active Max Fragment Len extension */
5741 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5742 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5744 /* return current SSL connection setting */
5745 return ssl->max_send_fragment;
5748 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5750 /* Return a value regarding an active Max Fragment Len extension */
5751 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5752 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5753 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5755 /* else limit |split_send_fragment| to current |max_send_fragment| */
5756 if (ssl->split_send_fragment > ssl->max_send_fragment)
5757 return ssl->max_send_fragment;
5759 /* return current SSL connection setting */
5760 return ssl->split_send_fragment;
5763 int SSL_stateless(SSL *s)
5767 /* Ensure there is no state left over from a previous invocation */
5773 s->s3.flags |= TLS1_FLAGS_STATELESS;
5774 ret = SSL_accept(s);
5775 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5777 if (ret > 0 && s->ext.cookieok)
5780 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5786 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5788 ctx->pha_enabled = val;
5791 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5793 ssl->pha_enabled = val;
5796 int SSL_verify_client_post_handshake(SSL *ssl)
5798 if (!SSL_IS_TLS13(ssl)) {
5799 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5803 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5807 if (!SSL_is_init_finished(ssl)) {
5808 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5812 switch (ssl->post_handshake_auth) {
5814 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5817 case SSL_PHA_EXT_SENT:
5818 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5820 case SSL_PHA_EXT_RECEIVED:
5822 case SSL_PHA_REQUEST_PENDING:
5823 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5825 case SSL_PHA_REQUESTED:
5826 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5830 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5832 /* checks verify_mode and algorithm_auth */
5833 if (!send_certificate_request(ssl)) {
5834 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5835 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5839 ossl_statem_set_in_init(ssl, 1);
5843 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5844 SSL_CTX_generate_session_ticket_fn gen_cb,
5845 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5848 ctx->generate_ticket_cb = gen_cb;
5849 ctx->decrypt_ticket_cb = dec_cb;
5850 ctx->ticket_cb_data = arg;
5854 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5855 SSL_allow_early_data_cb_fn cb,
5858 ctx->allow_early_data_cb = cb;
5859 ctx->allow_early_data_cb_data = arg;
5862 void SSL_set_allow_early_data_cb(SSL *s,
5863 SSL_allow_early_data_cb_fn cb,
5866 s->allow_early_data_cb = cb;
5867 s->allow_early_data_cb_data = arg;
5870 const EVP_CIPHER *ssl_evp_cipher_fetch(OPENSSL_CTX *libctx,
5872 const char *properties)
5876 #ifndef OPENSSL_NO_ENGINE
5880 * If there is an Engine available for this cipher we use the "implicit"
5881 * form to ensure we use that engine later.
5883 eng = ENGINE_get_cipher_engine(nid);
5886 return EVP_get_cipherbynid(nid);
5890 /* Otherwise we do an explicit fetch. This may fail and that could be ok */
5892 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
5898 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
5900 /* Don't up-ref an implicit EVP_CIPHER */
5901 if (EVP_CIPHER_provider(cipher) == NULL)
5905 * The cipher was explicitly fetched and therefore it is safe to cast
5908 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
5911 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
5916 if (EVP_CIPHER_provider(cipher) != NULL) {
5918 * The cipher was explicitly fetched and therefore it is safe to cast
5921 EVP_CIPHER_free((EVP_CIPHER *)cipher);
5925 const EVP_MD *ssl_evp_md_fetch(OPENSSL_CTX *libctx,
5927 const char *properties)
5931 #ifndef OPENSSL_NO_ENGINE
5935 * If there is an Engine available for this digest we use the "implicit"
5936 * form to ensure we use that engine later.
5938 eng = ENGINE_get_digest_engine(nid);
5941 return EVP_get_digestbynid(nid);
5945 /* Otherwise we do an explicit fetch */
5947 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
5952 int ssl_evp_md_up_ref(const EVP_MD *md)
5954 /* Don't up-ref an implicit EVP_MD */
5955 if (EVP_MD_provider(md) == NULL)
5959 * The digest was explicitly fetched and therefore it is safe to cast
5962 return EVP_MD_up_ref((EVP_MD *)md);
5965 void ssl_evp_md_free(const EVP_MD *md)
5970 if (EVP_MD_provider(md) != NULL) {
5972 * The digest was explicitly fetched and therefore it is safe to cast
5975 EVP_MD_free((EVP_MD *)md);