2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
13 #include "ssl_local.h"
14 #include "internal/e_os.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include <openssl/trace.h>
24 #include <openssl/core_names.h>
25 #include "internal/cryptlib.h"
26 #include "internal/refcount.h"
27 #include "internal/ktls.h"
29 static int ssl_undefined_function_1(SSL_CONNECTION *sc, SSL3_RECORD *r, size_t s,
30 int t, SSL_MAC_BUF *mac, size_t macsize)
32 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
35 static int ssl_undefined_function_2(SSL_CONNECTION *sc, SSL3_RECORD *r,
36 unsigned char *s, int t)
38 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
41 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
42 unsigned char *s, size_t t, size_t *u)
44 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
47 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
49 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
52 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
53 size_t s, unsigned char *t)
55 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
58 static int ssl_undefined_function_6(int r)
60 return ssl_undefined_function(NULL);
63 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
64 size_t s, const char *t, size_t u,
65 const unsigned char *v, size_t w, int x)
67 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
70 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
72 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
75 SSL3_ENC_METHOD ssl3_undef_enc_method = {
76 ssl_undefined_function_1,
77 ssl_undefined_function_2,
78 ssl_undefined_function_8,
79 ssl_undefined_function_3,
80 ssl_undefined_function_4,
81 ssl_undefined_function_5,
82 NULL, /* client_finished_label */
83 0, /* client_finished_label_len */
84 NULL, /* server_finished_label */
85 0, /* server_finished_label_len */
86 ssl_undefined_function_6,
87 ssl_undefined_function_7,
90 struct ssl_async_args {
94 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
96 int (*func_read) (SSL *, void *, size_t, size_t *);
97 int (*func_write) (SSL *, const void *, size_t, size_t *);
98 int (*func_other) (SSL *);
102 static const struct {
108 DANETLS_MATCHING_FULL, 0, NID_undef
111 DANETLS_MATCHING_2256, 1, NID_sha256
114 DANETLS_MATCHING_2512, 2, NID_sha512
118 static int dane_ctx_enable(struct dane_ctx_st *dctx)
120 const EVP_MD **mdevp;
122 uint8_t mdmax = DANETLS_MATCHING_LAST;
123 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
126 if (dctx->mdevp != NULL)
129 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
130 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
132 if (mdord == NULL || mdevp == NULL) {
138 /* Install default entries */
139 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
142 if (dane_mds[i].nid == NID_undef ||
143 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
145 mdevp[dane_mds[i].mtype] = md;
146 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
156 static void dane_ctx_final(struct dane_ctx_st *dctx)
158 OPENSSL_free(dctx->mdevp);
161 OPENSSL_free(dctx->mdord);
166 static void tlsa_free(danetls_record *t)
170 OPENSSL_free(t->data);
171 EVP_PKEY_free(t->spki);
175 static void dane_final(SSL_DANE *dane)
177 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
180 OSSL_STACK_OF_X509_free(dane->certs);
183 X509_free(dane->mcert);
191 * dane_copy - Copy dane configuration, sans verification state.
193 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
198 if (!DANETLS_ENABLED(&from->dane))
201 num = sk_danetls_record_num(from->dane.trecs);
202 dane_final(&to->dane);
203 to->dane.flags = from->dane.flags;
204 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
205 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
207 if (to->dane.trecs == NULL) {
208 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
212 for (i = 0; i < num; ++i) {
213 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
215 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
216 t->selector, t->mtype, t->data, t->dlen) <= 0)
222 static int dane_mtype_set(struct dane_ctx_st *dctx,
223 const EVP_MD *md, uint8_t mtype, uint8_t ord)
227 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
228 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
232 if (mtype > dctx->mdmax) {
233 const EVP_MD **mdevp;
235 int n = ((int)mtype) + 1;
237 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
242 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
247 /* Zero-fill any gaps */
248 for (i = dctx->mdmax + 1; i < mtype; ++i) {
256 dctx->mdevp[mtype] = md;
257 /* Coerce ordinal of disabled matching types to 0 */
258 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
263 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
265 if (mtype > dane->dctx->mdmax)
267 return dane->dctx->mdevp[mtype];
270 static int dane_tlsa_add(SSL_DANE *dane,
273 uint8_t mtype, const unsigned char *data, size_t dlen)
276 const EVP_MD *md = NULL;
277 int ilen = (int)dlen;
281 if (dane->trecs == NULL) {
282 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
286 if (ilen < 0 || dlen != (size_t)ilen) {
287 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
291 if (usage > DANETLS_USAGE_LAST) {
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
296 if (selector > DANETLS_SELECTOR_LAST) {
297 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
301 if (mtype != DANETLS_MATCHING_FULL) {
302 md = tlsa_md_get(dane, mtype);
304 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
309 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
310 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
314 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
318 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
322 t->selector = selector;
324 t->data = OPENSSL_malloc(dlen);
325 if (t->data == NULL) {
329 memcpy(t->data, data, dlen);
332 /* Validate and cache full certificate or public key */
333 if (mtype == DANETLS_MATCHING_FULL) {
334 const unsigned char *p = data;
336 EVP_PKEY *pkey = NULL;
339 case DANETLS_SELECTOR_CERT:
340 if (!d2i_X509(&cert, &p, ilen) || p < data ||
341 dlen != (size_t)(p - data)) {
343 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
346 if (X509_get0_pubkey(cert) == NULL) {
348 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
352 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
358 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
359 * records that contain full certificates of trust-anchors that are
360 * not present in the wire chain. For usage PKIX-TA(0), we augment
361 * the chain with untrusted Full(0) certificates from DNS, in case
362 * they are missing from the chain.
364 if ((dane->certs == NULL &&
365 (dane->certs = sk_X509_new_null()) == NULL) ||
366 !sk_X509_push(dane->certs, cert)) {
367 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
374 case DANETLS_SELECTOR_SPKI:
375 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
376 dlen != (size_t)(p - data)) {
378 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
383 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
384 * records that contain full bare keys of trust-anchors that are
385 * not present in the wire chain.
387 if (usage == DANETLS_USAGE_DANE_TA)
396 * Find the right insertion point for the new record.
398 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
399 * they can be processed first, as they require no chain building, and no
400 * expiration or hostname checks. Because DANE-EE(3) is numerically
401 * largest, this is accomplished via descending sort by "usage".
403 * We also sort in descending order by matching ordinal to simplify
404 * the implementation of digest agility in the verification code.
406 * The choice of order for the selector is not significant, so we
407 * use the same descending order for consistency.
409 num = sk_danetls_record_num(dane->trecs);
410 for (i = 0; i < num; ++i) {
411 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
413 if (rec->usage > usage)
415 if (rec->usage < usage)
417 if (rec->selector > selector)
419 if (rec->selector < selector)
421 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
426 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
428 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
431 dane->umask |= DANETLS_USAGE_BIT(usage);
437 * Return 0 if there is only one version configured and it was disabled
438 * at configure time. Return 1 otherwise.
440 static int ssl_check_allowed_versions(int min_version, int max_version)
442 int minisdtls = 0, maxisdtls = 0;
444 /* Figure out if we're doing DTLS versions or TLS versions */
445 if (min_version == DTLS1_BAD_VER
446 || min_version >> 8 == DTLS1_VERSION_MAJOR)
448 if (max_version == DTLS1_BAD_VER
449 || max_version >> 8 == DTLS1_VERSION_MAJOR)
451 /* A wildcard version of 0 could be DTLS or TLS. */
452 if ((minisdtls && !maxisdtls && max_version != 0)
453 || (maxisdtls && !minisdtls && min_version != 0)) {
454 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
458 if (minisdtls || maxisdtls) {
459 /* Do DTLS version checks. */
460 if (min_version == 0)
461 /* Ignore DTLS1_BAD_VER */
462 min_version = DTLS1_VERSION;
463 if (max_version == 0)
464 max_version = DTLS1_2_VERSION;
465 #ifdef OPENSSL_NO_DTLS1_2
466 if (max_version == DTLS1_2_VERSION)
467 max_version = DTLS1_VERSION;
469 #ifdef OPENSSL_NO_DTLS1
470 if (min_version == DTLS1_VERSION)
471 min_version = DTLS1_2_VERSION;
473 /* Done massaging versions; do the check. */
475 #ifdef OPENSSL_NO_DTLS1
476 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
477 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
479 #ifdef OPENSSL_NO_DTLS1_2
480 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
481 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
486 /* Regular TLS version checks. */
487 if (min_version == 0)
488 min_version = SSL3_VERSION;
489 if (max_version == 0)
490 max_version = TLS1_3_VERSION;
491 #ifdef OPENSSL_NO_TLS1_3
492 if (max_version == TLS1_3_VERSION)
493 max_version = TLS1_2_VERSION;
495 #ifdef OPENSSL_NO_TLS1_2
496 if (max_version == TLS1_2_VERSION)
497 max_version = TLS1_1_VERSION;
499 #ifdef OPENSSL_NO_TLS1_1
500 if (max_version == TLS1_1_VERSION)
501 max_version = TLS1_VERSION;
503 #ifdef OPENSSL_NO_TLS1
504 if (max_version == TLS1_VERSION)
505 max_version = SSL3_VERSION;
507 #ifdef OPENSSL_NO_SSL3
508 if (min_version == SSL3_VERSION)
509 min_version = TLS1_VERSION;
511 #ifdef OPENSSL_NO_TLS1
512 if (min_version == TLS1_VERSION)
513 min_version = TLS1_1_VERSION;
515 #ifdef OPENSSL_NO_TLS1_1
516 if (min_version == TLS1_1_VERSION)
517 min_version = TLS1_2_VERSION;
519 #ifdef OPENSSL_NO_TLS1_2
520 if (min_version == TLS1_2_VERSION)
521 min_version = TLS1_3_VERSION;
523 /* Done massaging versions; do the check. */
525 #ifdef OPENSSL_NO_SSL3
526 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
528 #ifdef OPENSSL_NO_TLS1
529 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
531 #ifdef OPENSSL_NO_TLS1_1
532 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
534 #ifdef OPENSSL_NO_TLS1_2
535 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
537 #ifdef OPENSSL_NO_TLS1_3
538 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
546 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
548 * Define a VPROC function for HP NonStop build ssl library.
549 * This is used by platform version identification tools.
550 * Do not inline this procedure or make it static.
552 # define OPENSSL_VPROC_STRING_(x) x##_SSL
553 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
554 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
555 void OPENSSL_VPROC_FUNC(void) {}
559 static void clear_ciphers(SSL_CONNECTION *s)
561 /* clear the current cipher */
562 ssl_clear_cipher_ctx(s);
563 ssl_clear_hash_ctx(&s->read_hash);
564 ssl_clear_hash_ctx(&s->write_hash);
567 int SSL_clear(SSL *s)
569 if (s->method == NULL) {
570 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
574 return s->method->ssl_reset(s);
577 int ossl_ssl_connection_reset(SSL *s)
579 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
584 if (ssl_clear_bad_session(sc)) {
585 SSL_SESSION_free(sc->session);
588 SSL_SESSION_free(sc->psksession);
589 sc->psksession = NULL;
590 OPENSSL_free(sc->psksession_id);
591 sc->psksession_id = NULL;
592 sc->psksession_id_len = 0;
593 sc->hello_retry_request = 0;
594 sc->sent_tickets = 0;
600 if (sc->renegotiate) {
601 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
605 ossl_statem_clear(sc);
607 /* TODO(QUIC): Version handling not yet clear */
608 sc->version = s->method->version;
609 sc->client_version = sc->version;
610 sc->rwstate = SSL_NOTHING;
612 BUF_MEM_free(sc->init_buf);
615 sc->first_packet = 0;
617 sc->key_update = SSL_KEY_UPDATE_NONE;
619 EVP_MD_CTX_free(sc->pha_dgst);
622 /* Reset DANE verification result state */
625 X509_free(sc->dane.mcert);
626 sc->dane.mcert = NULL;
627 sc->dane.mtlsa = NULL;
629 /* Clear the verification result peername */
630 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
632 /* Clear any shared connection state */
633 OPENSSL_free(sc->shared_sigalgs);
634 sc->shared_sigalgs = NULL;
635 sc->shared_sigalgslen = 0;
638 * Check to see if we were changed into a different method, if so, revert
641 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
642 s->method->ssl_deinit(s);
643 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
644 if (!s->method->ssl_init(s))
647 if (!s->method->ssl_clear(s))
651 RECORD_LAYER_clear(&sc->rlayer);
652 BIO_free(sc->rlayer.rrlnext);
653 sc->rlayer.rrlnext = NULL;
655 if (!ssl_set_new_record_layer(sc,
656 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
657 OSSL_RECORD_DIRECTION_READ,
658 OSSL_RECORD_PROTECTION_LEVEL_NONE,
659 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
660 NID_undef, NULL, NULL)) {
661 /* SSLfatal already called */
664 if (!ssl_set_new_record_layer(sc,
665 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
666 OSSL_RECORD_DIRECTION_WRITE,
667 OSSL_RECORD_PROTECTION_LEVEL_NONE,
668 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
669 NID_undef, NULL, NULL)) {
670 /* SSLfatal already called */
677 #ifndef OPENSSL_NO_DEPRECATED_3_0
678 /** Used to change an SSL_CTXs default SSL method type */
679 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
681 STACK_OF(SSL_CIPHER) *sk;
685 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
686 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
689 sk = ssl_create_cipher_list(ctx,
690 ctx->tls13_ciphersuites,
692 &(ctx->cipher_list_by_id),
693 OSSL_default_cipher_list(), ctx->cert);
694 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
695 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
702 SSL *SSL_new(SSL_CTX *ctx)
705 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
708 if (ctx->method == NULL) {
709 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
712 return ctx->method->ssl_new(ctx);
715 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
720 ssl->lock = CRYPTO_THREAD_lock_new();
721 if (ssl->lock == NULL)
727 ssl->method = ctx->method;
729 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
735 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
740 s = OPENSSL_zalloc(sizeof(*s));
745 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
751 #ifndef OPENSSL_NO_QUIC
752 /* set the parent (user visible) ssl to self */
756 RECORD_LAYER_init(&s->rlayer, s);
758 s->options = ctx->options;
759 s->dane.flags = ctx->dane.flags;
760 s->min_proto_version = ctx->min_proto_version;
761 s->max_proto_version = ctx->max_proto_version;
763 s->max_cert_list = ctx->max_cert_list;
764 s->max_early_data = ctx->max_early_data;
765 s->recv_max_early_data = ctx->recv_max_early_data;
766 s->num_tickets = ctx->num_tickets;
767 s->pha_enabled = ctx->pha_enabled;
769 /* Shallow copy of the ciphersuites stack */
770 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
771 if (s->tls13_ciphersuites == NULL)
775 * Earlier library versions used to copy the pointer to the CERT, not
776 * its contents; only when setting new parameters for the per-SSL
777 * copy, ssl_cert_new would be called (and the direct reference to
778 * the per-SSL_CTX settings would be lost, but those still were
779 * indirectly accessed for various purposes, and for that reason they
780 * used to be known as s->ctx->default_cert). Now we don't look at the
781 * SSL_CTX's CERT after having duplicated it once.
783 s->cert = ssl_cert_dup(ctx->cert);
787 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
788 s->msg_callback = ctx->msg_callback;
789 s->msg_callback_arg = ctx->msg_callback_arg;
790 s->verify_mode = ctx->verify_mode;
791 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
792 s->rlayer.record_padding_cb = ctx->record_padding_cb;
793 s->rlayer.record_padding_arg = ctx->record_padding_arg;
794 s->rlayer.block_padding = ctx->block_padding;
795 s->sid_ctx_length = ctx->sid_ctx_length;
796 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
798 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
799 s->verify_callback = ctx->default_verify_callback;
800 s->generate_session_id = ctx->generate_session_id;
802 s->param = X509_VERIFY_PARAM_new();
803 if (s->param == NULL)
805 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
806 s->quiet_shutdown = ctx->quiet_shutdown;
808 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
809 s->max_send_fragment = ctx->max_send_fragment;
810 s->split_send_fragment = ctx->split_send_fragment;
811 s->max_pipelines = ctx->max_pipelines;
812 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
815 s->ext.debug_arg = NULL;
816 s->ext.ticket_expected = 0;
817 s->ext.status_type = ctx->ext.status_type;
818 s->ext.status_expected = 0;
819 s->ext.ocsp.ids = NULL;
820 s->ext.ocsp.exts = NULL;
821 s->ext.ocsp.resp = NULL;
822 s->ext.ocsp.resp_len = 0;
824 s->session_ctx = ctx;
825 if (ctx->ext.ecpointformats) {
826 s->ext.ecpointformats =
827 OPENSSL_memdup(ctx->ext.ecpointformats,
828 ctx->ext.ecpointformats_len);
829 if (!s->ext.ecpointformats) {
830 s->ext.ecpointformats_len = 0;
833 s->ext.ecpointformats_len =
834 ctx->ext.ecpointformats_len;
836 if (ctx->ext.supportedgroups) {
837 s->ext.supportedgroups =
838 OPENSSL_memdup(ctx->ext.supportedgroups,
839 ctx->ext.supportedgroups_len
840 * sizeof(*ctx->ext.supportedgroups));
841 if (!s->ext.supportedgroups) {
842 s->ext.supportedgroups_len = 0;
845 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
848 #ifndef OPENSSL_NO_NEXTPROTONEG
852 if (ctx->ext.alpn != NULL) {
853 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
854 if (s->ext.alpn == NULL) {
858 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
859 s->ext.alpn_len = ctx->ext.alpn_len;
862 s->verified_chain = NULL;
863 s->verify_result = X509_V_OK;
865 s->default_passwd_callback = ctx->default_passwd_callback;
866 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
868 s->key_update = SSL_KEY_UPDATE_NONE;
870 s->allow_early_data_cb = ctx->allow_early_data_cb;
871 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
873 if (!ssl->method->ssl_init(ssl))
876 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
881 #ifndef OPENSSL_NO_PSK
882 s->psk_client_callback = ctx->psk_client_callback;
883 s->psk_server_callback = ctx->psk_server_callback;
885 s->psk_find_session_cb = ctx->psk_find_session_cb;
886 s->psk_use_session_cb = ctx->psk_use_session_cb;
888 s->async_cb = ctx->async_cb;
889 s->async_cb_arg = ctx->async_cb_arg;
893 #ifndef OPENSSL_NO_CT
894 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
895 ctx->ct_validation_callback_arg))
901 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
904 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
907 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
913 int SSL_is_dtls(const SSL *s)
915 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
920 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
923 int SSL_up_ref(SSL *s)
927 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
930 REF_PRINT_COUNT("SSL", s);
931 REF_ASSERT_ISNT(i < 2);
932 return ((i > 1) ? 1 : 0);
935 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
936 unsigned int sid_ctx_len)
938 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
939 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
942 ctx->sid_ctx_length = sid_ctx_len;
943 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
948 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
949 unsigned int sid_ctx_len)
951 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
956 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
957 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
960 sc->sid_ctx_length = sid_ctx_len;
961 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
966 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
968 if (!CRYPTO_THREAD_write_lock(ctx->lock))
970 ctx->generate_session_id = cb;
971 CRYPTO_THREAD_unlock(ctx->lock);
975 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
977 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
979 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
981 sc->generate_session_id = cb;
982 CRYPTO_THREAD_unlock(ssl->lock);
986 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
990 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
991 * we can "construct" a session to give us the desired check - i.e. to
992 * find if there's a session in the hash table that would conflict with
993 * any new session built out of this id/id_len and the ssl_version in use
997 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
999 if (sc == NULL || id_len > sizeof(r.session_id))
1002 r.ssl_version = sc->version;
1003 r.session_id_length = id_len;
1004 memcpy(r.session_id, id, id_len);
1006 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1008 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1009 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1013 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1015 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1018 int SSL_set_purpose(SSL *s, int purpose)
1020 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1025 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1028 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1030 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1033 int SSL_set_trust(SSL *s, int trust)
1035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1040 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1043 int SSL_set1_host(SSL *s, const char *hostname)
1045 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1050 /* If a hostname is provided and parses as an IP address,
1051 * treat it as such. */
1052 if (hostname != NULL
1053 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1056 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1059 int SSL_add1_host(SSL *s, const char *hostname)
1061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1066 /* If a hostname is provided and parses as an IP address,
1067 * treat it as such. */
1070 ASN1_OCTET_STRING *ip;
1073 ip = a2i_IPADDRESS(hostname);
1075 /* We didn't want it; only to check if it *is* an IP address */
1076 ASN1_OCTET_STRING_free(ip);
1078 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1081 OPENSSL_free(old_ip);
1082 /* There can be only one IP address */
1086 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1090 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1093 void SSL_set_hostflags(SSL *s, unsigned int flags)
1095 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1100 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1103 const char *SSL_get0_peername(SSL *s)
1105 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1110 return X509_VERIFY_PARAM_get0_peername(sc->param);
1113 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1115 return dane_ctx_enable(&ctx->dane);
1118 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1120 unsigned long orig = ctx->dane.flags;
1122 ctx->dane.flags |= flags;
1126 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1128 unsigned long orig = ctx->dane.flags;
1130 ctx->dane.flags &= ~flags;
1134 int SSL_dane_enable(SSL *s, const char *basedomain)
1137 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1143 if (s->ctx->dane.mdmax == 0) {
1144 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1147 if (dane->trecs != NULL) {
1148 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1153 * Default SNI name. This rejects empty names, while set1_host below
1154 * accepts them and disables hostname checks. To avoid side-effects with
1155 * invalid input, set the SNI name first.
1157 if (sc->ext.hostname == NULL) {
1158 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1159 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1164 /* Primary RFC6125 reference identifier */
1165 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1166 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1172 dane->dctx = &s->ctx->dane;
1173 dane->trecs = sk_danetls_record_new_null();
1175 if (dane->trecs == NULL) {
1176 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1182 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1185 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1190 orig = sc->dane.flags;
1192 sc->dane.flags |= flags;
1196 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1199 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1204 orig = sc->dane.flags;
1206 sc->dane.flags &= ~flags;
1210 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1213 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1220 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1224 *mcert = dane->mcert;
1226 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1231 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1232 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1235 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1242 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1246 *usage = dane->mtlsa->usage;
1248 *selector = dane->mtlsa->selector;
1250 *mtype = dane->mtlsa->mtype;
1252 *data = dane->mtlsa->data;
1254 *dlen = dane->mtlsa->dlen;
1259 SSL_DANE *SSL_get0_dane(SSL *s)
1261 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1269 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1270 uint8_t mtype, const unsigned char *data, size_t dlen)
1272 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1277 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1280 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1283 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1286 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1288 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1291 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1293 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1298 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1301 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1306 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1308 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1316 void SSL_certs_clear(SSL *s)
1318 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1323 ssl_cert_clear_certs(sc->cert);
1326 void SSL_free(SSL *s)
1332 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1333 REF_PRINT_COUNT("SSL", s);
1336 REF_ASSERT_ISNT(i < 0);
1338 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1340 if (s->method != NULL)
1341 s->method->ssl_free(s);
1343 SSL_CTX_free(s->ctx);
1344 CRYPTO_THREAD_lock_free(s->lock);
1349 void ossl_ssl_connection_free(SSL *ssl)
1353 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1357 X509_VERIFY_PARAM_free(s->param);
1358 dane_final(&s->dane);
1360 /* Ignore return value */
1361 ssl_free_wbio_buffer(s);
1363 RECORD_LAYER_clear(&s->rlayer);
1365 BIO_free_all(s->wbio);
1367 BIO_free_all(s->rbio);
1370 BUF_MEM_free(s->init_buf);
1372 /* add extra stuff */
1373 sk_SSL_CIPHER_free(s->cipher_list);
1374 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1375 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1376 sk_SSL_CIPHER_free(s->peer_ciphers);
1378 /* Make the next call work :-) */
1379 if (s->session != NULL) {
1380 ssl_clear_bad_session(s);
1381 SSL_SESSION_free(s->session);
1383 SSL_SESSION_free(s->psksession);
1384 OPENSSL_free(s->psksession_id);
1388 ssl_cert_free(s->cert);
1389 OPENSSL_free(s->shared_sigalgs);
1390 /* Free up if allocated */
1392 OPENSSL_free(s->ext.hostname);
1393 SSL_CTX_free(s->session_ctx);
1394 OPENSSL_free(s->ext.ecpointformats);
1395 OPENSSL_free(s->ext.peer_ecpointformats);
1396 OPENSSL_free(s->ext.supportedgroups);
1397 OPENSSL_free(s->ext.peer_supportedgroups);
1398 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1399 #ifndef OPENSSL_NO_OCSP
1400 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1402 #ifndef OPENSSL_NO_CT
1403 SCT_LIST_free(s->scts);
1404 OPENSSL_free(s->ext.scts);
1406 OPENSSL_free(s->ext.ocsp.resp);
1407 OPENSSL_free(s->ext.alpn);
1408 OPENSSL_free(s->ext.tls13_cookie);
1409 if (s->clienthello != NULL)
1410 OPENSSL_free(s->clienthello->pre_proc_exts);
1411 OPENSSL_free(s->clienthello);
1412 OPENSSL_free(s->pha_context);
1413 EVP_MD_CTX_free(s->pha_dgst);
1415 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1416 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1418 OSSL_STACK_OF_X509_free(s->verified_chain);
1420 if (ssl->method != NULL)
1421 ssl->method->ssl_deinit(ssl);
1423 ASYNC_WAIT_CTX_free(s->waitctx);
1425 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1426 OPENSSL_free(s->ext.npn);
1429 #ifndef OPENSSL_NO_SRTP
1430 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1434 void SSL_set0_rbio(SSL *s, BIO *rbio)
1436 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1441 BIO_free_all(sc->rbio);
1443 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1446 void SSL_set0_wbio(SSL *s, BIO *wbio)
1448 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1454 * If the output buffering BIO is still in place, remove it
1456 if (sc->bbio != NULL)
1457 sc->wbio = BIO_pop(sc->wbio);
1459 BIO_free_all(sc->wbio);
1462 /* Re-attach |bbio| to the new |wbio|. */
1463 if (sc->bbio != NULL)
1464 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1466 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1469 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1472 * For historical reasons, this function has many different cases in
1473 * ownership handling.
1476 /* If nothing has changed, do nothing */
1477 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1481 * If the two arguments are equal then one fewer reference is granted by the
1482 * caller than we want to take
1484 if (rbio != NULL && rbio == wbio)
1488 * If only the wbio is changed only adopt one reference.
1490 if (rbio == SSL_get_rbio(s)) {
1491 SSL_set0_wbio(s, wbio);
1495 * There is an asymmetry here for historical reasons. If only the rbio is
1496 * changed AND the rbio and wbio were originally different, then we only
1497 * adopt one reference.
1499 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1500 SSL_set0_rbio(s, rbio);
1504 /* Otherwise, adopt both references. */
1505 SSL_set0_rbio(s, rbio);
1506 SSL_set0_wbio(s, wbio);
1509 BIO *SSL_get_rbio(const SSL *s)
1511 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1519 BIO *SSL_get_wbio(const SSL *s)
1521 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1526 if (sc->bbio != NULL) {
1528 * If |bbio| is active, the true caller-configured BIO is its
1531 return BIO_next(sc->bbio);
1536 int SSL_get_fd(const SSL *s)
1538 return SSL_get_rfd(s);
1541 int SSL_get_rfd(const SSL *s)
1546 b = SSL_get_rbio(s);
1547 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1549 BIO_get_fd(r, &ret);
1553 int SSL_get_wfd(const SSL *s)
1558 b = SSL_get_wbio(s);
1559 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1561 BIO_get_fd(r, &ret);
1565 #ifndef OPENSSL_NO_SOCK
1566 int SSL_set_fd(SSL *s, int fd)
1571 bio = BIO_new(BIO_s_socket());
1574 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1577 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1578 SSL_set_bio(s, bio, bio);
1579 #ifndef OPENSSL_NO_KTLS
1581 * The new socket is created successfully regardless of ktls_enable.
1582 * ktls_enable doesn't change any functionality of the socket, except
1583 * changing the setsockopt to enable the processing of ktls_start.
1584 * Thus, it is not a problem to call it for non-TLS sockets.
1587 #endif /* OPENSSL_NO_KTLS */
1593 int SSL_set_wfd(SSL *s, int fd)
1595 BIO *rbio = SSL_get_rbio(s);
1597 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1598 || (int)BIO_get_fd(rbio, NULL) != fd) {
1599 BIO *bio = BIO_new(BIO_s_socket());
1602 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1605 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1606 SSL_set0_wbio(s, bio);
1607 #ifndef OPENSSL_NO_KTLS
1609 * The new socket is created successfully regardless of ktls_enable.
1610 * ktls_enable doesn't change any functionality of the socket, except
1611 * changing the setsockopt to enable the processing of ktls_start.
1612 * Thus, it is not a problem to call it for non-TLS sockets.
1615 #endif /* OPENSSL_NO_KTLS */
1618 SSL_set0_wbio(s, rbio);
1623 int SSL_set_rfd(SSL *s, int fd)
1625 BIO *wbio = SSL_get_wbio(s);
1627 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1628 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1629 BIO *bio = BIO_new(BIO_s_socket());
1632 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1635 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1636 SSL_set0_rbio(s, bio);
1639 SSL_set0_rbio(s, wbio);
1646 /* return length of latest Finished message we sent, copy to 'buf' */
1647 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1650 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1655 ret = sc->s3.tmp.finish_md_len;
1658 memcpy(buf, sc->s3.tmp.finish_md, count);
1662 /* return length of latest Finished message we expected, copy to 'buf' */
1663 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1666 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1671 ret = sc->s3.tmp.peer_finish_md_len;
1674 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1678 int SSL_get_verify_mode(const SSL *s)
1680 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1685 return sc->verify_mode;
1688 int SSL_get_verify_depth(const SSL *s)
1690 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1695 return X509_VERIFY_PARAM_get_depth(sc->param);
1698 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1699 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1704 return sc->verify_callback;
1707 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1709 return ctx->verify_mode;
1712 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1714 return X509_VERIFY_PARAM_get_depth(ctx->param);
1717 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1718 return ctx->default_verify_callback;
1721 void SSL_set_verify(SSL *s, int mode,
1722 int (*callback) (int ok, X509_STORE_CTX *ctx))
1724 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1729 sc->verify_mode = mode;
1730 if (callback != NULL)
1731 sc->verify_callback = callback;
1734 void SSL_set_verify_depth(SSL *s, int depth)
1736 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1741 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1744 void SSL_set_read_ahead(SSL *s, int yes)
1746 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1747 OSSL_PARAM options[2], *opts = options;
1752 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1754 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1755 &sc->rlayer.read_ahead);
1756 *opts = OSSL_PARAM_construct_end();
1758 /* Ignore return value */
1759 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1762 int SSL_get_read_ahead(const SSL *s)
1764 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1769 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1772 int SSL_pending(const SSL *s)
1774 size_t pending = s->method->ssl_pending(s);
1777 * SSL_pending cannot work properly if read-ahead is enabled
1778 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1779 * impossible to fix since SSL_pending cannot report errors that may be
1780 * observed while scanning the new data. (Note that SSL_pending() is
1781 * often used as a boolean value, so we'd better not return -1.)
1783 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1784 * we just return INT_MAX.
1786 return pending < INT_MAX ? (int)pending : INT_MAX;
1789 int SSL_has_pending(const SSL *s)
1792 * Similar to SSL_pending() but returns a 1 to indicate that we have
1793 * processed or unprocessed data available or 0 otherwise (as opposed to the
1794 * number of bytes available). Unlike SSL_pending() this will take into
1795 * account read_ahead data. A 1 return simply indicates that we have data.
1796 * That data may not result in any application data, or we may fail to parse
1797 * the records for some reason.
1799 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1801 /* Check buffered app data if any first */
1802 if (SSL_CONNECTION_IS_DTLS(sc)) {
1806 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1807 while ((item = pqueue_next(&iter)) != NULL) {
1809 if (rdata->length > 0)
1814 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1817 return RECORD_LAYER_read_pending(&sc->rlayer);
1820 X509 *SSL_get1_peer_certificate(const SSL *s)
1822 X509 *r = SSL_get0_peer_certificate(s);
1830 X509 *SSL_get0_peer_certificate(const SSL *s)
1832 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1837 if (sc->session == NULL)
1840 return sc->session->peer;
1843 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1846 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1851 if (sc->session == NULL)
1854 r = sc->session->peer_chain;
1857 * If we are a client, cert_chain includes the peer's own certificate; if
1858 * we are a server, it does not.
1865 * Now in theory, since the calling process own 't' it should be safe to
1866 * modify. We need to be able to read f without being hassled
1868 int SSL_copy_session_id(SSL *t, const SSL *f)
1871 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1872 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1873 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1875 if (tsc == NULL || fsc == NULL)
1878 /* Do we need to do SSL locking? */
1879 if (!SSL_set_session(t, SSL_get_session(f))) {
1884 * what if we are setup for one protocol version but want to talk another
1886 if (t->method != f->method) {
1887 t->method->ssl_deinit(t);
1888 t->method = f->method;
1889 if (t->method->ssl_init(t) == 0)
1893 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1894 ssl_cert_free(tsc->cert);
1895 tsc->cert = fsc->cert;
1896 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1903 /* Fix this so it checks all the valid key/cert options */
1904 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1906 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1907 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1910 if (ctx->cert->key->privatekey == NULL) {
1911 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1914 return X509_check_private_key
1915 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1918 /* Fix this function so that it takes an optional type parameter */
1919 int SSL_check_private_key(const SSL *ssl)
1921 const SSL_CONNECTION *sc;
1923 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1924 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1927 if (sc->cert->key->x509 == NULL) {
1928 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1931 if (sc->cert->key->privatekey == NULL) {
1932 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1935 return X509_check_private_key(sc->cert->key->x509,
1936 sc->cert->key->privatekey);
1939 int SSL_waiting_for_async(SSL *s)
1941 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1952 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1954 ASYNC_WAIT_CTX *ctx;
1955 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1960 if ((ctx = sc->waitctx) == NULL)
1962 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1965 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1966 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1968 ASYNC_WAIT_CTX *ctx;
1969 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1974 if ((ctx = sc->waitctx) == NULL)
1976 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1980 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1982 ctx->async_cb = callback;
1986 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1988 ctx->async_cb_arg = arg;
1992 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1994 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1999 sc->async_cb = callback;
2003 int SSL_set_async_callback_arg(SSL *s, void *arg)
2005 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2010 sc->async_cb_arg = arg;
2014 int SSL_get_async_status(SSL *s, int *status)
2016 ASYNC_WAIT_CTX *ctx;
2017 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2022 if ((ctx = sc->waitctx) == NULL)
2024 *status = ASYNC_WAIT_CTX_get_status(ctx);
2028 int SSL_accept(SSL *s)
2030 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2035 if (sc->handshake_func == NULL) {
2036 /* Not properly initialized yet */
2037 SSL_set_accept_state(s);
2040 return SSL_do_handshake(s);
2043 int SSL_connect(SSL *s)
2045 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2050 if (sc->handshake_func == NULL) {
2051 /* Not properly initialized yet */
2052 SSL_set_connect_state(s);
2055 return SSL_do_handshake(s);
2058 long SSL_get_default_timeout(const SSL *s)
2060 return (long int)ossl_time2seconds(s->method->get_timeout());
2063 static int ssl_async_wait_ctx_cb(void *arg)
2065 SSL *s = (SSL *)arg;
2066 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2071 return sc->async_cb(s, sc->async_cb_arg);
2074 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2075 int (*func) (void *))
2078 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2083 if (sc->waitctx == NULL) {
2084 sc->waitctx = ASYNC_WAIT_CTX_new();
2085 if (sc->waitctx == NULL)
2087 if (sc->async_cb != NULL
2088 && !ASYNC_WAIT_CTX_set_callback
2089 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2093 sc->rwstate = SSL_NOTHING;
2094 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2095 sizeof(struct ssl_async_args))) {
2097 sc->rwstate = SSL_NOTHING;
2098 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2101 sc->rwstate = SSL_ASYNC_PAUSED;
2104 sc->rwstate = SSL_ASYNC_NO_JOBS;
2110 sc->rwstate = SSL_NOTHING;
2111 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2112 /* Shouldn't happen */
2117 static int ssl_io_intern(void *vargs)
2119 struct ssl_async_args *args;
2125 args = (struct ssl_async_args *)vargs;
2129 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2132 switch (args->type) {
2134 return args->f.func_read(s, buf, num, &sc->asyncrw);
2136 return args->f.func_write(s, buf, num, &sc->asyncrw);
2138 return args->f.func_other(s);
2143 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2145 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2150 if (sc->handshake_func == NULL) {
2151 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2155 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2156 sc->rwstate = SSL_NOTHING;
2160 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2161 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2162 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2166 * If we are a client and haven't received the ServerHello etc then we
2169 ossl_statem_check_finish_init(sc, 0);
2171 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2172 struct ssl_async_args args;
2178 args.type = READFUNC;
2179 args.f.func_read = s->method->ssl_read;
2181 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2182 *readbytes = sc->asyncrw;
2185 return s->method->ssl_read(s, buf, num, readbytes);
2189 int SSL_read(SSL *s, void *buf, int num)
2195 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2199 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2202 * The cast is safe here because ret should be <= INT_MAX because num is
2206 ret = (int)readbytes;
2211 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2213 int ret = ssl_read_internal(s, buf, num, readbytes);
2220 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2223 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2225 /* TODO(QUIC): This will need special handling for QUIC */
2230 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2231 return SSL_READ_EARLY_DATA_ERROR;
2234 switch (sc->early_data_state) {
2235 case SSL_EARLY_DATA_NONE:
2236 if (!SSL_in_before(s)) {
2237 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2238 return SSL_READ_EARLY_DATA_ERROR;
2242 case SSL_EARLY_DATA_ACCEPT_RETRY:
2243 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2244 ret = SSL_accept(s);
2247 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2248 return SSL_READ_EARLY_DATA_ERROR;
2252 case SSL_EARLY_DATA_READ_RETRY:
2253 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2254 sc->early_data_state = SSL_EARLY_DATA_READING;
2255 ret = SSL_read_ex(s, buf, num, readbytes);
2257 * State machine will update early_data_state to
2258 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2261 if (ret > 0 || (ret <= 0 && sc->early_data_state
2262 != SSL_EARLY_DATA_FINISHED_READING)) {
2263 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2264 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2265 : SSL_READ_EARLY_DATA_ERROR;
2268 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2271 return SSL_READ_EARLY_DATA_FINISH;
2274 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2275 return SSL_READ_EARLY_DATA_ERROR;
2279 int SSL_get_early_data_status(const SSL *s)
2281 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2283 /* TODO(QUIC): This will need special handling for QUIC */
2287 return sc->ext.early_data;
2290 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2292 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2297 if (sc->handshake_func == NULL) {
2298 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2302 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2305 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2306 struct ssl_async_args args;
2312 args.type = READFUNC;
2313 args.f.func_read = s->method->ssl_peek;
2315 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2316 *readbytes = sc->asyncrw;
2319 return s->method->ssl_peek(s, buf, num, readbytes);
2323 int SSL_peek(SSL *s, void *buf, int num)
2329 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2333 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2336 * The cast is safe here because ret should be <= INT_MAX because num is
2340 ret = (int)readbytes;
2346 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2348 int ret = ssl_peek_internal(s, buf, num, readbytes);
2355 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2357 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2362 if (sc->handshake_func == NULL) {
2363 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2367 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2368 sc->rwstate = SSL_NOTHING;
2369 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2373 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2374 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2375 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2376 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2379 /* If we are a client and haven't sent the Finished we better do that */
2380 ossl_statem_check_finish_init(sc, 1);
2382 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2384 struct ssl_async_args args;
2387 args.buf = (void *)buf;
2389 args.type = WRITEFUNC;
2390 args.f.func_write = s->method->ssl_write;
2392 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2393 *written = sc->asyncrw;
2396 return s->method->ssl_write(s, buf, num, written);
2400 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2403 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2408 if (sc->handshake_func == NULL) {
2409 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2413 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2414 sc->rwstate = SSL_NOTHING;
2415 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2419 if (!BIO_get_ktls_send(sc->wbio)) {
2420 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2424 /* If we have an alert to send, lets send it */
2425 if (sc->s3.alert_dispatch) {
2426 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2428 /* SSLfatal() already called if appropriate */
2431 /* if it went, fall through and send more stuff */
2434 sc->rwstate = SSL_WRITING;
2435 if (BIO_flush(sc->wbio) <= 0) {
2436 if (!BIO_should_retry(sc->wbio)) {
2437 sc->rwstate = SSL_NOTHING;
2440 set_sys_error(EAGAIN);
2446 #ifdef OPENSSL_NO_KTLS
2447 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2448 "can't call ktls_sendfile(), ktls disabled");
2451 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2453 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2454 if ((get_last_sys_error() == EAGAIN) ||
2455 (get_last_sys_error() == EINTR) ||
2456 (get_last_sys_error() == EBUSY))
2457 BIO_set_retry_write(sc->wbio);
2460 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2463 sc->rwstate = SSL_NOTHING;
2468 int SSL_write(SSL *s, const void *buf, int num)
2474 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2478 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2481 * The cast is safe here because ret should be <= INT_MAX because num is
2490 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2492 int ret = ssl_write_internal(s, buf, num, written);
2499 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2501 int ret, early_data_state;
2503 uint32_t partialwrite;
2504 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2506 /* TODO(QUIC): This will need special handling for QUIC */
2510 switch (sc->early_data_state) {
2511 case SSL_EARLY_DATA_NONE:
2513 || !SSL_in_before(s)
2514 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2515 && (sc->psk_use_session_cb == NULL))) {
2516 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2521 case SSL_EARLY_DATA_CONNECT_RETRY:
2522 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2523 ret = SSL_connect(s);
2526 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2531 case SSL_EARLY_DATA_WRITE_RETRY:
2532 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2534 * We disable partial write for early data because we don't keep track
2535 * of how many bytes we've written between the SSL_write_ex() call and
2536 * the flush if the flush needs to be retried)
2538 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2539 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2540 ret = SSL_write_ex(s, buf, num, &writtmp);
2541 sc->mode |= partialwrite;
2543 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2546 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2549 case SSL_EARLY_DATA_WRITE_FLUSH:
2550 /* The buffering BIO is still in place so we need to flush it */
2551 if (statem_flush(sc) != 1)
2554 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2557 case SSL_EARLY_DATA_FINISHED_READING:
2558 case SSL_EARLY_DATA_READ_RETRY:
2559 early_data_state = sc->early_data_state;
2560 /* We are a server writing to an unauthenticated client */
2561 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2562 ret = SSL_write_ex(s, buf, num, written);
2563 /* The buffering BIO is still in place */
2565 (void)BIO_flush(sc->wbio);
2566 sc->early_data_state = early_data_state;
2570 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2575 int SSL_shutdown(SSL *s)
2578 * Note that this function behaves differently from what one might
2579 * expect. Return values are 0 for no success (yet), 1 for success; but
2580 * calling it once is usually not enough, even if blocking I/O is used
2581 * (see ssl3_shutdown).
2583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2588 if (sc->handshake_func == NULL) {
2589 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2593 if (!SSL_in_init(s)) {
2594 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2595 struct ssl_async_args args;
2597 memset(&args, 0, sizeof(args));
2599 args.type = OTHERFUNC;
2600 args.f.func_other = s->method->ssl_shutdown;
2602 return ssl_start_async_job(s, &args, ssl_io_intern);
2604 return s->method->ssl_shutdown(s);
2607 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2612 int SSL_key_update(SSL *s, int updatetype)
2614 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2619 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2620 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2624 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2625 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2626 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2630 if (!SSL_is_init_finished(s)) {
2631 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2635 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2636 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2640 ossl_statem_set_in_init(sc, 1);
2641 sc->key_update = updatetype;
2645 int SSL_get_key_update_type(const SSL *s)
2647 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2652 return sc->key_update;
2656 * Can we accept a renegotiation request? If yes, set the flag and
2657 * return 1 if yes. If not, raise error and return 0.
2659 static int can_renegotiate(const SSL_CONNECTION *sc)
2661 if (SSL_CONNECTION_IS_TLS13(sc)) {
2662 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2666 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2667 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2674 int SSL_renegotiate(SSL *s)
2676 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2681 if (!can_renegotiate(sc))
2684 sc->renegotiate = 1;
2685 sc->new_session = 1;
2686 return s->method->ssl_renegotiate(s);
2689 int SSL_renegotiate_abbreviated(SSL *s)
2691 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2696 if (!can_renegotiate(sc))
2699 sc->renegotiate = 1;
2700 sc->new_session = 0;
2701 return s->method->ssl_renegotiate(s);
2704 int SSL_renegotiate_pending(const SSL *s)
2706 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2712 * becomes true when negotiation is requested; false again once a
2713 * handshake has finished
2715 return (sc->renegotiate != 0);
2718 int SSL_new_session_ticket(SSL *s)
2720 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2725 /* If we are in init because we're sending tickets, okay to send more. */
2726 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2727 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2728 || !SSL_CONNECTION_IS_TLS13(sc))
2730 sc->ext.extra_tickets_expected++;
2731 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2732 ossl_statem_set_in_init(sc, 1);
2736 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2739 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2741 /* TODO(QUIC): Special handling for some ctrls will be needed */
2746 case SSL_CTRL_GET_READ_AHEAD:
2747 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2748 case SSL_CTRL_SET_READ_AHEAD:
2749 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2750 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2753 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2754 sc->msg_callback_arg = parg;
2759 OSSL_PARAM options[2], *opts = options;
2763 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2765 *opts = OSSL_PARAM_construct_end();
2767 /* Ignore return value */
2768 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2772 case SSL_CTRL_CLEAR_MODE:
2773 return (sc->mode &= ~larg);
2774 case SSL_CTRL_GET_MAX_CERT_LIST:
2775 return (long)sc->max_cert_list;
2776 case SSL_CTRL_SET_MAX_CERT_LIST:
2779 l = (long)sc->max_cert_list;
2780 sc->max_cert_list = (size_t)larg;
2782 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2783 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2785 #ifndef OPENSSL_NO_KTLS
2786 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2788 #endif /* OPENSSL_NO_KTLS */
2789 sc->max_send_fragment = larg;
2790 if (sc->max_send_fragment < sc->split_send_fragment)
2791 sc->split_send_fragment = sc->max_send_fragment;
2792 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2794 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2795 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2797 sc->split_send_fragment = larg;
2799 case SSL_CTRL_SET_MAX_PIPELINES:
2800 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2802 sc->max_pipelines = larg;
2803 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2804 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2806 case SSL_CTRL_GET_RI_SUPPORT:
2807 return sc->s3.send_connection_binding;
2808 case SSL_CTRL_SET_RETRY_VERIFY:
2809 sc->rwstate = SSL_RETRY_VERIFY;
2811 case SSL_CTRL_CERT_FLAGS:
2812 return (sc->cert->cert_flags |= larg);
2813 case SSL_CTRL_CLEAR_CERT_FLAGS:
2814 return (sc->cert->cert_flags &= ~larg);
2816 case SSL_CTRL_GET_RAW_CIPHERLIST:
2818 if (sc->s3.tmp.ciphers_raw == NULL)
2820 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2821 return (int)sc->s3.tmp.ciphers_rawlen;
2823 return TLS_CIPHER_LEN;
2825 case SSL_CTRL_GET_EXTMS_SUPPORT:
2826 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2828 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2832 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2833 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2834 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2835 &sc->min_proto_version);
2836 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2837 return sc->min_proto_version;
2838 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2839 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2840 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2841 &sc->max_proto_version);
2842 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2843 return sc->max_proto_version;
2845 return s->method->ssl_ctrl(s, cmd, larg, parg);
2849 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2851 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2857 case SSL_CTRL_SET_MSG_CALLBACK:
2858 sc->msg_callback = (void (*)
2859 (int write_p, int version, int content_type,
2860 const void *buf, size_t len, SSL *ssl,
2865 return s->method->ssl_callback_ctrl(s, cmd, fp);
2869 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2871 return ctx->sessions;
2874 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2878 if (ssl_tsan_lock(ctx)) {
2879 res = tsan_load(stat);
2880 ssl_tsan_unlock(ctx);
2885 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2888 /* For some cases with ctx == NULL perform syntax checks */
2891 case SSL_CTRL_SET_GROUPS_LIST:
2892 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2893 case SSL_CTRL_SET_SIGALGS_LIST:
2894 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2895 return tls1_set_sigalgs_list(NULL, parg, 0);
2902 case SSL_CTRL_GET_READ_AHEAD:
2903 return ctx->read_ahead;
2904 case SSL_CTRL_SET_READ_AHEAD:
2905 l = ctx->read_ahead;
2906 ctx->read_ahead = larg;
2909 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2910 ctx->msg_callback_arg = parg;
2913 case SSL_CTRL_GET_MAX_CERT_LIST:
2914 return (long)ctx->max_cert_list;
2915 case SSL_CTRL_SET_MAX_CERT_LIST:
2918 l = (long)ctx->max_cert_list;
2919 ctx->max_cert_list = (size_t)larg;
2922 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2925 l = (long)ctx->session_cache_size;
2926 ctx->session_cache_size = (size_t)larg;
2928 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2929 return (long)ctx->session_cache_size;
2930 case SSL_CTRL_SET_SESS_CACHE_MODE:
2931 l = ctx->session_cache_mode;
2932 ctx->session_cache_mode = larg;
2934 case SSL_CTRL_GET_SESS_CACHE_MODE:
2935 return ctx->session_cache_mode;
2937 case SSL_CTRL_SESS_NUMBER:
2938 return lh_SSL_SESSION_num_items(ctx->sessions);
2939 case SSL_CTRL_SESS_CONNECT:
2940 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2941 case SSL_CTRL_SESS_CONNECT_GOOD:
2942 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2943 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2944 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2945 case SSL_CTRL_SESS_ACCEPT:
2946 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2947 case SSL_CTRL_SESS_ACCEPT_GOOD:
2948 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2949 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2950 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2951 case SSL_CTRL_SESS_HIT:
2952 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2953 case SSL_CTRL_SESS_CB_HIT:
2954 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2955 case SSL_CTRL_SESS_MISSES:
2956 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2957 case SSL_CTRL_SESS_TIMEOUTS:
2958 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2959 case SSL_CTRL_SESS_CACHE_FULL:
2960 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2962 return (ctx->mode |= larg);
2963 case SSL_CTRL_CLEAR_MODE:
2964 return (ctx->mode &= ~larg);
2965 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2966 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2968 ctx->max_send_fragment = larg;
2969 if (ctx->max_send_fragment < ctx->split_send_fragment)
2970 ctx->split_send_fragment = ctx->max_send_fragment;
2972 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2973 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2975 ctx->split_send_fragment = larg;
2977 case SSL_CTRL_SET_MAX_PIPELINES:
2978 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2980 ctx->max_pipelines = larg;
2982 case SSL_CTRL_CERT_FLAGS:
2983 return (ctx->cert->cert_flags |= larg);
2984 case SSL_CTRL_CLEAR_CERT_FLAGS:
2985 return (ctx->cert->cert_flags &= ~larg);
2986 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2987 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2988 && ssl_set_version_bound(ctx->method->version, (int)larg,
2989 &ctx->min_proto_version);
2990 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2991 return ctx->min_proto_version;
2992 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2993 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2994 && ssl_set_version_bound(ctx->method->version, (int)larg,
2995 &ctx->max_proto_version);
2996 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2997 return ctx->max_proto_version;
2999 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3003 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3006 case SSL_CTRL_SET_MSG_CALLBACK:
3007 ctx->msg_callback = (void (*)
3008 (int write_p, int version, int content_type,
3009 const void *buf, size_t len, SSL *ssl,
3014 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3018 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3027 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3028 const SSL_CIPHER *const *bp)
3030 if ((*ap)->id > (*bp)->id)
3032 if ((*ap)->id < (*bp)->id)
3038 * return a STACK of the ciphers available for the SSL and in order of
3041 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3043 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3046 if (sc->cipher_list != NULL) {
3047 return sc->cipher_list;
3048 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3049 return s->ctx->cipher_list;
3055 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3057 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3059 if (sc == NULL || !sc->server)
3061 return sc->peer_ciphers;
3064 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3066 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3068 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3073 ciphers = SSL_get_ciphers(s);
3076 if (!ssl_set_client_disabled(sc))
3078 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3079 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3080 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3082 sk = sk_SSL_CIPHER_new_null();
3085 if (!sk_SSL_CIPHER_push(sk, c)) {
3086 sk_SSL_CIPHER_free(sk);
3094 /** return a STACK of the ciphers available for the SSL and in order of
3096 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3099 if (s->cipher_list_by_id != NULL)
3100 return s->cipher_list_by_id;
3101 else if (s->ssl.ctx != NULL
3102 && s->ssl.ctx->cipher_list_by_id != NULL)
3103 return s->ssl.ctx->cipher_list_by_id;
3108 /** The old interface to get the same thing as SSL_get_ciphers() */
3109 const char *SSL_get_cipher_list(const SSL *s, int n)
3111 const SSL_CIPHER *c;
3112 STACK_OF(SSL_CIPHER) *sk;
3116 sk = SSL_get_ciphers(s);
3117 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3119 c = sk_SSL_CIPHER_value(sk, n);
3125 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3127 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3130 return ctx->cipher_list;
3135 * Distinguish between ciphers controlled by set_ciphersuite() and
3136 * set_cipher_list() when counting.
3138 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3141 const SSL_CIPHER *c;
3145 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3146 c = sk_SSL_CIPHER_value(sk, i);
3147 if (c->min_tls >= TLS1_3_VERSION)
3154 /** specify the ciphers to be used by default by the SSL_CTX */
3155 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3157 STACK_OF(SSL_CIPHER) *sk;
3159 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3160 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3163 * ssl_create_cipher_list may return an empty stack if it was unable to
3164 * find a cipher matching the given rule string (for example if the rule
3165 * string specifies a cipher which has been disabled). This is not an
3166 * error as far as ssl_create_cipher_list is concerned, and hence
3167 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3171 else if (cipher_list_tls12_num(sk) == 0) {
3172 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3178 /** specify the ciphers to be used by the SSL */
3179 int SSL_set_cipher_list(SSL *s, const char *str)
3181 STACK_OF(SSL_CIPHER) *sk;
3182 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3187 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3188 &sc->cipher_list, &sc->cipher_list_by_id, str,
3190 /* see comment in SSL_CTX_set_cipher_list */
3193 else if (cipher_list_tls12_num(sk) == 0) {
3194 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3200 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3203 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3204 const SSL_CIPHER *c;
3206 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3212 || sc->peer_ciphers == NULL
3217 clntsk = sc->peer_ciphers;
3218 srvrsk = SSL_get_ciphers(s);
3219 if (clntsk == NULL || srvrsk == NULL)
3222 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3225 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3228 c = sk_SSL_CIPHER_value(clntsk, i);
3229 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3232 n = strlen(c->name);
3249 * Return the requested servername (SNI) value. Note that the behaviour varies
3251 * - whether this is called by the client or the server,
3252 * - if we are before or during/after the handshake,
3253 * - if a resumption or normal handshake is being attempted/has occurred
3254 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3256 * Note that only the host_name type is defined (RFC 3546).
3258 const char *SSL_get_servername(const SSL *s, const int type)
3260 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3267 * If we don't know if we are the client or the server yet then we assume
3270 server = sc->handshake_func == NULL ? 0 : sc->server;
3272 if (type != TLSEXT_NAMETYPE_host_name)
3278 * In TLSv1.3 on the server SNI is not associated with the session
3279 * but in TLSv1.2 or below it is.
3281 * Before the handshake:
3284 * During/after the handshake (TLSv1.2 or below resumption occurred):
3285 * - If a servername was accepted by the server in the original
3286 * handshake then it will return that servername, or NULL otherwise.
3288 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3289 * - The function will return the servername requested by the client in
3290 * this handshake or NULL if none was requested.
3292 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3293 return sc->session->ext.hostname;
3298 * Before the handshake:
3299 * - If a servername has been set via a call to
3300 * SSL_set_tlsext_host_name() then it will return that servername
3301 * - If one has not been set, but a TLSv1.2 resumption is being
3302 * attempted and the session from the original handshake had a
3303 * servername accepted by the server then it will return that
3305 * - Otherwise it returns NULL
3307 * During/after the handshake (TLSv1.2 or below resumption occurred):
3308 * - If the session from the original handshake had a servername accepted
3309 * by the server then it will return that servername.
3310 * - Otherwise it returns the servername set via
3311 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3313 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3314 * - It will return the servername set via SSL_set_tlsext_host_name()
3315 * (or NULL if it was not called).
3317 if (SSL_in_before(s)) {
3318 if (sc->ext.hostname == NULL
3319 && sc->session != NULL
3320 && sc->session->ssl_version != TLS1_3_VERSION)
3321 return sc->session->ext.hostname;
3323 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3324 && sc->session->ext.hostname != NULL)
3325 return sc->session->ext.hostname;
3329 return sc->ext.hostname;
3332 int SSL_get_servername_type(const SSL *s)
3334 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3335 return TLSEXT_NAMETYPE_host_name;
3340 * SSL_select_next_proto implements the standard protocol selection. It is
3341 * expected that this function is called from the callback set by
3342 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3343 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3344 * not included in the length. A byte string of length 0 is invalid. No byte
3345 * string may be truncated. The current, but experimental algorithm for
3346 * selecting the protocol is: 1) If the server doesn't support NPN then this
3347 * is indicated to the callback. In this case, the client application has to
3348 * abort the connection or have a default application level protocol. 2) If
3349 * the server supports NPN, but advertises an empty list then the client
3350 * selects the first protocol in its list, but indicates via the API that this
3351 * fallback case was enacted. 3) Otherwise, the client finds the first
3352 * protocol in the server's list that it supports and selects this protocol.
3353 * This is because it's assumed that the server has better information about
3354 * which protocol a client should use. 4) If the client doesn't support any
3355 * of the server's advertised protocols, then this is treated the same as
3356 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3357 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3359 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3360 const unsigned char *server,
3361 unsigned int server_len,
3362 const unsigned char *client, unsigned int client_len)
3365 const unsigned char *result;
3366 int status = OPENSSL_NPN_UNSUPPORTED;
3369 * For each protocol in server preference order, see if we support it.
3371 for (i = 0; i < server_len;) {
3372 for (j = 0; j < client_len;) {
3373 if (server[i] == client[j] &&
3374 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3375 /* We found a match */
3376 result = &server[i];
3377 status = OPENSSL_NPN_NEGOTIATED;
3387 /* There's no overlap between our protocols and the server's list. */
3389 status = OPENSSL_NPN_NO_OVERLAP;
3392 *out = (unsigned char *)result + 1;
3393 *outlen = result[0];
3397 #ifndef OPENSSL_NO_NEXTPROTONEG
3399 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3400 * client's requested protocol for this connection and returns 0. If the
3401 * client didn't request any protocol, then *data is set to NULL. Note that
3402 * the client can request any protocol it chooses. The value returned from
3403 * this function need not be a member of the list of supported protocols
3404 * provided by the callback.
3406 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3409 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3412 /* We have no other way to indicate error */
3418 *data = sc->ext.npn;
3419 if (*data == NULL) {
3422 *len = (unsigned int)sc->ext.npn_len;
3427 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3428 * a TLS server needs a list of supported protocols for Next Protocol
3429 * Negotiation. The returned list must be in wire format. The list is
3430 * returned by setting |out| to point to it and |outlen| to its length. This
3431 * memory will not be modified, but one should assume that the SSL* keeps a
3432 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3433 * wishes to advertise. Otherwise, no such extension will be included in the
3436 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3437 SSL_CTX_npn_advertised_cb_func cb,
3440 ctx->ext.npn_advertised_cb = cb;
3441 ctx->ext.npn_advertised_cb_arg = arg;
3445 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3446 * client needs to select a protocol from the server's provided list. |out|
3447 * must be set to point to the selected protocol (which may be within |in|).
3448 * The length of the protocol name must be written into |outlen|. The
3449 * server's advertised protocols are provided in |in| and |inlen|. The
3450 * callback can assume that |in| is syntactically valid. The client must
3451 * select a protocol. It is fatal to the connection if this callback returns
3452 * a value other than SSL_TLSEXT_ERR_OK.
3454 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3455 SSL_CTX_npn_select_cb_func cb,
3458 ctx->ext.npn_select_cb = cb;
3459 ctx->ext.npn_select_cb_arg = arg;
3463 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3467 if (protos_len < 2 || protos == NULL)
3470 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3471 if (protos[idx] == 0)
3474 return idx == protos_len;
3477 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3478 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3479 * length-prefixed strings). Returns 0 on success.
3481 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3482 unsigned int protos_len)
3484 unsigned char *alpn;
3486 if (protos_len == 0 || protos == NULL) {
3487 OPENSSL_free(ctx->ext.alpn);
3488 ctx->ext.alpn = NULL;
3489 ctx->ext.alpn_len = 0;
3492 /* Not valid per RFC */
3493 if (!alpn_value_ok(protos, protos_len))
3496 alpn = OPENSSL_memdup(protos, protos_len);
3499 OPENSSL_free(ctx->ext.alpn);
3500 ctx->ext.alpn = alpn;
3501 ctx->ext.alpn_len = protos_len;
3507 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3508 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3509 * length-prefixed strings). Returns 0 on success.
3511 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3512 unsigned int protos_len)
3514 unsigned char *alpn;
3515 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3520 if (protos_len == 0 || protos == NULL) {
3521 OPENSSL_free(sc->ext.alpn);
3522 sc->ext.alpn = NULL;
3523 sc->ext.alpn_len = 0;
3526 /* Not valid per RFC */
3527 if (!alpn_value_ok(protos, protos_len))
3530 alpn = OPENSSL_memdup(protos, protos_len);
3533 OPENSSL_free(sc->ext.alpn);
3534 sc->ext.alpn = alpn;
3535 sc->ext.alpn_len = protos_len;
3541 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3542 * called during ClientHello processing in order to select an ALPN protocol
3543 * from the client's list of offered protocols.
3545 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3546 SSL_CTX_alpn_select_cb_func cb,
3549 ctx->ext.alpn_select_cb = cb;
3550 ctx->ext.alpn_select_cb_arg = arg;
3554 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3555 * On return it sets |*data| to point to |*len| bytes of protocol name
3556 * (not including the leading length-prefix byte). If the server didn't
3557 * respond with a negotiated protocol then |*len| will be zero.
3559 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3562 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3565 /* We have no other way to indicate error */
3571 *data = sc->s3.alpn_selected;
3575 *len = (unsigned int)sc->s3.alpn_selected_len;
3578 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3579 const char *label, size_t llen,
3580 const unsigned char *context, size_t contextlen,
3583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3588 if (sc->session == NULL
3589 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3592 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3594 contextlen, use_context);
3597 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3598 const char *label, size_t llen,
3599 const unsigned char *context,
3602 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3607 if (sc->version != TLS1_3_VERSION)
3610 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3611 context, contextlen);
3614 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3616 const unsigned char *session_id = a->session_id;
3618 unsigned char tmp_storage[4];
3620 if (a->session_id_length < sizeof(tmp_storage)) {
3621 memset(tmp_storage, 0, sizeof(tmp_storage));
3622 memcpy(tmp_storage, a->session_id, a->session_id_length);
3623 session_id = tmp_storage;
3627 ((unsigned long)session_id[0]) |
3628 ((unsigned long)session_id[1] << 8L) |
3629 ((unsigned long)session_id[2] << 16L) |
3630 ((unsigned long)session_id[3] << 24L);
3635 * NB: If this function (or indeed the hash function which uses a sort of
3636 * coarser function than this one) is changed, ensure
3637 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3638 * being able to construct an SSL_SESSION that will collide with any existing
3639 * session with a matching session ID.
3641 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3643 if (a->ssl_version != b->ssl_version)
3645 if (a->session_id_length != b->session_id_length)
3647 return memcmp(a->session_id, b->session_id, a->session_id_length);
3651 * These wrapper functions should remain rather than redeclaring
3652 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3653 * variable. The reason is that the functions aren't static, they're exposed
3657 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3658 const SSL_METHOD *meth)
3660 SSL_CTX *ret = NULL;
3663 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3667 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3670 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3671 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3674 ret = OPENSSL_zalloc(sizeof(*ret));
3678 /* Init the reference counting before any call to SSL_CTX_free */
3679 ret->references = 1;
3680 ret->lock = CRYPTO_THREAD_lock_new();
3681 if (ret->lock == NULL) {
3682 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3686 #ifdef TSAN_REQUIRES_LOCKING
3687 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3688 if (ret->tsan_lock == NULL) {
3689 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3694 ret->libctx = libctx;
3695 if (propq != NULL) {
3696 ret->propq = OPENSSL_strdup(propq);
3697 if (ret->propq == NULL)
3702 ret->min_proto_version = 0;
3703 ret->max_proto_version = 0;
3704 ret->mode = SSL_MODE_AUTO_RETRY;
3705 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3706 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3707 /* We take the system default. */
3708 ret->session_timeout = meth->get_timeout();
3709 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3710 ret->verify_mode = SSL_VERIFY_NONE;
3711 if ((ret->cert = ssl_cert_new()) == NULL) {
3712 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3716 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3717 if (ret->sessions == NULL) {
3718 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3721 ret->cert_store = X509_STORE_new();
3722 if (ret->cert_store == NULL) {
3723 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3726 #ifndef OPENSSL_NO_CT
3727 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3728 if (ret->ctlog_store == NULL) {
3729 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3734 /* initialize cipher/digest methods table */
3735 if (!ssl_load_ciphers(ret))
3737 /* initialise sig algs */
3738 if (!ssl_setup_sig_algs(ret))
3741 if (!ssl_load_groups(ret))
3744 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3745 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3749 if (!ssl_create_cipher_list(ret,
3750 ret->tls13_ciphersuites,
3751 &ret->cipher_list, &ret->cipher_list_by_id,
3752 OSSL_default_cipher_list(), ret->cert)
3753 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3754 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3758 ret->param = X509_VERIFY_PARAM_new();
3759 if (ret->param == NULL) {
3760 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3765 * If these aren't available from the provider we'll get NULL returns.
3766 * That's fine but will cause errors later if SSLv3 is negotiated
3768 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3769 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3771 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3772 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3776 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3777 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3781 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3782 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3786 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3789 /* No compression for DTLS */
3790 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3791 ret->comp_methods = SSL_COMP_get_compression_methods();
3793 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3794 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3796 /* Setup RFC5077 ticket keys */
3797 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3798 sizeof(ret->ext.tick_key_name), 0) <= 0)
3799 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3800 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3801 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3802 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3803 ret->options |= SSL_OP_NO_TICKET;
3805 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3806 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3807 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3811 #ifndef OPENSSL_NO_SRP
3812 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3813 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3817 #ifndef OPENSSL_NO_ENGINE
3818 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3819 # define eng_strx(x) #x
3820 # define eng_str(x) eng_strx(x)
3821 /* Use specific client engine automatically... ignore errors */
3824 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3827 ENGINE_load_builtin_engines();
3828 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3830 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3836 * Disable compression by default to prevent CRIME. Applications can
3837 * re-enable compression by configuring
3838 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3839 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3840 * middlebox compatibility by default. This may be disabled by default in
3841 * a later OpenSSL version.
3843 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3845 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3848 * We cannot usefully set a default max_early_data here (which gets
3849 * propagated in SSL_new(), for the following reason: setting the
3850 * SSL field causes tls_construct_stoc_early_data() to tell the
3851 * client that early data will be accepted when constructing a TLS 1.3
3852 * session ticket, and the client will accordingly send us early data
3853 * when using that ticket (if the client has early data to send).
3854 * However, in order for the early data to actually be consumed by
3855 * the application, the application must also have calls to
3856 * SSL_read_early_data(); otherwise we'll just skip past the early data
3857 * and ignore it. So, since the application must add calls to
3858 * SSL_read_early_data(), we also require them to add
3859 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3860 * eliminating the bandwidth-wasting early data in the case described
3863 ret->max_early_data = 0;
3866 * Default recv_max_early_data is a fully loaded single record. Could be
3867 * split across multiple records in practice. We set this differently to
3868 * max_early_data so that, in the default case, we do not advertise any
3869 * support for early_data, but if a client were to send us some (e.g.
3870 * because of an old, stale ticket) then we will tolerate it and skip over
3873 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3875 /* By default we send two session tickets automatically in TLSv1.3 */
3876 ret->num_tickets = 2;
3878 ssl_ctx_system_config(ret);
3886 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3888 return SSL_CTX_new_ex(NULL, NULL, meth);
3891 int SSL_CTX_up_ref(SSL_CTX *ctx)
3895 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3898 REF_PRINT_COUNT("SSL_CTX", ctx);
3899 REF_ASSERT_ISNT(i < 2);
3900 return ((i > 1) ? 1 : 0);
3903 void SSL_CTX_free(SSL_CTX *a)
3911 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3912 REF_PRINT_COUNT("SSL_CTX", a);
3915 REF_ASSERT_ISNT(i < 0);
3917 X509_VERIFY_PARAM_free(a->param);
3918 dane_ctx_final(&a->dane);
3921 * Free internal session cache. However: the remove_cb() may reference
3922 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3923 * after the sessions were flushed.
3924 * As the ex_data handling routines might also touch the session cache,
3925 * the most secure solution seems to be: empty (flush) the cache, then
3926 * free ex_data, then finally free the cache.
3927 * (See ticket [openssl.org #212].)
3929 if (a->sessions != NULL)
3930 SSL_CTX_flush_sessions(a, 0);
3932 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3933 lh_SSL_SESSION_free(a->sessions);
3934 X509_STORE_free(a->cert_store);
3935 #ifndef OPENSSL_NO_CT
3936 CTLOG_STORE_free(a->ctlog_store);
3938 sk_SSL_CIPHER_free(a->cipher_list);
3939 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3940 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3941 ssl_cert_free(a->cert);
3942 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3943 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3944 OSSL_STACK_OF_X509_free(a->extra_certs);
3945 a->comp_methods = NULL;
3946 #ifndef OPENSSL_NO_SRTP
3947 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3949 #ifndef OPENSSL_NO_SRP
3950 ssl_ctx_srp_ctx_free_intern(a);
3952 #ifndef OPENSSL_NO_ENGINE
3953 tls_engine_finish(a->client_cert_engine);
3956 OPENSSL_free(a->ext.ecpointformats);
3957 OPENSSL_free(a->ext.supportedgroups);
3958 OPENSSL_free(a->ext.supported_groups_default);
3959 OPENSSL_free(a->ext.alpn);
3960 OPENSSL_secure_free(a->ext.secure);
3962 ssl_evp_md_free(a->md5);
3963 ssl_evp_md_free(a->sha1);
3965 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3966 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3967 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3968 ssl_evp_md_free(a->ssl_digest_methods[j]);
3969 for (j = 0; j < a->group_list_len; j++) {
3970 OPENSSL_free(a->group_list[j].tlsname);
3971 OPENSSL_free(a->group_list[j].realname);
3972 OPENSSL_free(a->group_list[j].algorithm);
3974 OPENSSL_free(a->group_list);
3976 OPENSSL_free(a->sigalg_lookup_cache);
3978 CRYPTO_THREAD_lock_free(a->lock);
3979 #ifdef TSAN_REQUIRES_LOCKING
3980 CRYPTO_THREAD_lock_free(a->tsan_lock);
3983 OPENSSL_free(a->propq);
3988 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3990 ctx->default_passwd_callback = cb;
3993 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3995 ctx->default_passwd_callback_userdata = u;
3998 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4000 return ctx->default_passwd_callback;
4003 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4005 return ctx->default_passwd_callback_userdata;
4008 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4010 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4015 sc->default_passwd_callback = cb;
4018 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4020 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4025 sc->default_passwd_callback_userdata = u;
4028 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4030 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4035 return sc->default_passwd_callback;
4038 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4040 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4045 return sc->default_passwd_callback_userdata;
4048 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4049 int (*cb) (X509_STORE_CTX *, void *),
4052 ctx->app_verify_callback = cb;
4053 ctx->app_verify_arg = arg;
4056 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4057 int (*cb) (int, X509_STORE_CTX *))
4059 ctx->verify_mode = mode;
4060 ctx->default_verify_callback = cb;
4063 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4065 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4068 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4070 ssl_cert_set_cert_cb(c->cert, cb, arg);
4073 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4075 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4080 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4083 void ssl_set_masks(SSL_CONNECTION *s)
4086 uint32_t *pvalid = s->s3.tmp.valid_flags;
4087 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4088 unsigned long mask_k, mask_a;
4089 int have_ecc_cert, ecdsa_ok;
4094 dh_tmp = (c->dh_tmp != NULL
4095 || c->dh_tmp_cb != NULL
4098 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4099 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4100 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4101 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4105 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4106 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4108 #ifndef OPENSSL_NO_GOST
4109 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4110 mask_k |= SSL_kGOST | SSL_kGOST18;
4111 mask_a |= SSL_aGOST12;
4113 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4114 mask_k |= SSL_kGOST | SSL_kGOST18;
4115 mask_a |= SSL_aGOST12;
4117 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4118 mask_k |= SSL_kGOST;
4119 mask_a |= SSL_aGOST01;
4130 * If we only have an RSA-PSS certificate allow RSA authentication
4131 * if TLS 1.2 and peer supports it.
4134 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4135 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4136 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4143 mask_a |= SSL_aNULL;
4146 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4147 * depending on the key usage extension.
4149 if (have_ecc_cert) {
4151 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4152 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4153 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4156 mask_a |= SSL_aECDSA;
4158 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4159 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4160 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4161 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4162 mask_a |= SSL_aECDSA;
4164 /* Allow Ed448 for TLS 1.2 if peer supports it */
4165 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4166 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4167 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4168 mask_a |= SSL_aECDSA;
4170 mask_k |= SSL_kECDHE;
4172 #ifndef OPENSSL_NO_PSK
4175 if (mask_k & SSL_kRSA)
4176 mask_k |= SSL_kRSAPSK;
4177 if (mask_k & SSL_kDHE)
4178 mask_k |= SSL_kDHEPSK;
4179 if (mask_k & SSL_kECDHE)
4180 mask_k |= SSL_kECDHEPSK;
4183 s->s3.tmp.mask_k = mask_k;
4184 s->s3.tmp.mask_a = mask_a;
4187 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4189 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4190 /* key usage, if present, must allow signing */
4191 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4192 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4196 return 1; /* all checks are ok */
4199 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4200 const unsigned char **serverinfo,
4201 size_t *serverinfo_length)
4203 CERT_PKEY *cpk = s->s3.tmp.cert;
4204 *serverinfo_length = 0;
4206 if (cpk == NULL || cpk->serverinfo == NULL)
4209 *serverinfo = cpk->serverinfo;
4210 *serverinfo_length = cpk->serverinfo_length;
4214 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4219 * If the session_id_length is 0, we are not supposed to cache it, and it
4220 * would be rather hard to do anyway :-)
4222 if (s->session->session_id_length == 0)
4226 * If sid_ctx_length is 0 there is no specific application context
4227 * associated with this session, so when we try to resume it and
4228 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4229 * indication that this is actually a session for the proper application
4230 * context, and the *handshake* will fail, not just the resumption attempt.
4231 * Do not cache (on the server) these sessions that are not resumable
4232 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4234 if (s->server && s->session->sid_ctx_length == 0
4235 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4238 i = s->session_ctx->session_cache_mode;
4240 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4242 * Add the session to the internal cache. In server side TLSv1.3 we
4243 * normally don't do this because by default it's a full stateless ticket
4244 * with only a dummy session id so there is no reason to cache it,
4246 * - we are doing early_data, in which case we cache so that we can
4248 * - the application has set a remove_session_cb so needs to know about
4249 * session timeout events
4250 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4252 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4253 && (!SSL_CONNECTION_IS_TLS13(s)
4255 || (s->max_early_data > 0
4256 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4257 || s->session_ctx->remove_session_cb != NULL
4258 || (s->options & SSL_OP_NO_TICKET) != 0))
4259 SSL_CTX_add_session(s->session_ctx, s->session);
4262 * Add the session to the external cache. We do this even in server side
4263 * TLSv1.3 without early data because some applications just want to
4264 * know about the creation of a session and aren't doing a full cache.
4266 if (s->session_ctx->new_session_cb != NULL) {
4267 SSL_SESSION_up_ref(s->session);
4268 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4270 SSL_SESSION_free(s->session);
4274 /* auto flush every 255 connections */
4275 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4276 TSAN_QUALIFIER int *stat;
4278 if (mode & SSL_SESS_CACHE_CLIENT)
4279 stat = &s->session_ctx->stats.sess_connect_good;
4281 stat = &s->session_ctx->stats.sess_accept_good;
4282 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4283 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4287 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4292 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4297 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4300 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4302 /* TODO(QUIC): Do we want this for QUIC? */
4304 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4307 if (s->method != meth) {
4308 const SSL_METHOD *sm = s->method;
4309 int (*hf) (SSL *) = sc->handshake_func;
4311 if (sm->version == meth->version)
4316 ret = s->method->ssl_init(s);
4319 if (hf == sm->ssl_connect)
4320 sc->handshake_func = meth->ssl_connect;
4321 else if (hf == sm->ssl_accept)
4322 sc->handshake_func = meth->ssl_accept;
4327 int SSL_get_error(const SSL *s, int i)
4332 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4335 return SSL_ERROR_NONE;
4337 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4339 return SSL_ERROR_SSL;
4342 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4343 * where we do encode the error
4345 if ((l = ERR_peek_error()) != 0) {
4346 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4347 return SSL_ERROR_SYSCALL;
4349 return SSL_ERROR_SSL;
4352 if (SSL_want_read(s)) {
4353 bio = SSL_get_rbio(s);
4354 if (BIO_should_read(bio))
4355 return SSL_ERROR_WANT_READ;
4356 else if (BIO_should_write(bio))
4358 * This one doesn't make too much sense ... We never try to write
4359 * to the rbio, and an application program where rbio and wbio
4360 * are separate couldn't even know what it should wait for.
4361 * However if we ever set s->rwstate incorrectly (so that we have
4362 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4363 * wbio *are* the same, this test works around that bug; so it
4364 * might be safer to keep it.
4366 return SSL_ERROR_WANT_WRITE;
4367 else if (BIO_should_io_special(bio)) {
4368 reason = BIO_get_retry_reason(bio);
4369 if (reason == BIO_RR_CONNECT)
4370 return SSL_ERROR_WANT_CONNECT;
4371 else if (reason == BIO_RR_ACCEPT)
4372 return SSL_ERROR_WANT_ACCEPT;
4374 return SSL_ERROR_SYSCALL; /* unknown */
4378 if (SSL_want_write(s)) {
4379 /* Access wbio directly - in order to use the buffered bio if present */
4381 if (BIO_should_write(bio))
4382 return SSL_ERROR_WANT_WRITE;
4383 else if (BIO_should_read(bio))
4385 * See above (SSL_want_read(s) with BIO_should_write(bio))
4387 return SSL_ERROR_WANT_READ;
4388 else if (BIO_should_io_special(bio)) {
4389 reason = BIO_get_retry_reason(bio);
4390 if (reason == BIO_RR_CONNECT)
4391 return SSL_ERROR_WANT_CONNECT;
4392 else if (reason == BIO_RR_ACCEPT)
4393 return SSL_ERROR_WANT_ACCEPT;
4395 return SSL_ERROR_SYSCALL;
4398 if (SSL_want_x509_lookup(s))
4399 return SSL_ERROR_WANT_X509_LOOKUP;
4400 if (SSL_want_retry_verify(s))
4401 return SSL_ERROR_WANT_RETRY_VERIFY;
4402 if (SSL_want_async(s))
4403 return SSL_ERROR_WANT_ASYNC;
4404 if (SSL_want_async_job(s))
4405 return SSL_ERROR_WANT_ASYNC_JOB;
4406 if (SSL_want_client_hello_cb(s))
4407 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4409 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4410 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4411 return SSL_ERROR_ZERO_RETURN;
4413 return SSL_ERROR_SYSCALL;
4416 static int ssl_do_handshake_intern(void *vargs)
4418 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4420 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4425 return sc->handshake_func(s);
4428 int SSL_do_handshake(SSL *s)
4431 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4433 /* TODO(QUIC): Special handling for QUIC will be needed */
4437 if (sc->handshake_func == NULL) {
4438 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4442 ossl_statem_check_finish_init(sc, -1);
4444 s->method->ssl_renegotiate_check(s, 0);
4446 if (SSL_in_init(s) || SSL_in_before(s)) {
4447 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4448 struct ssl_async_args args;
4450 memset(&args, 0, sizeof(args));
4453 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4455 ret = sc->handshake_func(s);
4461 void SSL_set_accept_state(SSL *s)
4463 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4465 /* TODO(QUIC): Special handling for QUIC will be needed */
4471 ossl_statem_clear(sc);
4472 sc->handshake_func = s->method->ssl_accept;
4476 void SSL_set_connect_state(SSL *s)
4478 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4480 /* TODO(QUIC): Special handling for QUIC will be needed */
4486 ossl_statem_clear(sc);
4487 sc->handshake_func = s->method->ssl_connect;
4491 int ssl_undefined_function(SSL *s)
4493 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4497 int ssl_undefined_void_function(void)
4499 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4503 int ssl_undefined_const_function(const SSL *s)
4508 const SSL_METHOD *ssl_bad_method(int ver)
4510 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4514 const char *ssl_protocol_to_string(int version)
4518 case TLS1_3_VERSION:
4521 case TLS1_2_VERSION:
4524 case TLS1_1_VERSION:
4539 case DTLS1_2_VERSION:
4547 const char *SSL_get_version(const SSL *s)
4549 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4551 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4555 return ssl_protocol_to_string(sc->version);
4558 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4560 STACK_OF(X509_NAME) *sk;
4569 if ((sk = sk_X509_NAME_new_null()) == NULL)
4571 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4572 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4574 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4577 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4579 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4588 SSL *SSL_dup(SSL *s)
4592 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4593 SSL_CONNECTION *retsc;
4594 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4599 /* If we're not quiescent, just up_ref! */
4600 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4601 CRYPTO_UP_REF(&s->references, &i, s->lock);
4606 * Otherwise, copy configuration state, and session if set.
4608 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4610 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4613 if (sc->session != NULL) {
4615 * Arranges to share the same session via up_ref. This "copies"
4616 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4618 if (!SSL_copy_session_id(ret, s))
4622 * No session has been established yet, so we have to expect that
4623 * s->cert or ret->cert will be changed later -- they should not both
4624 * point to the same object, and thus we can't use
4625 * SSL_copy_session_id.
4627 if (!SSL_set_ssl_method(ret, s->method))
4630 if (sc->cert != NULL) {
4631 ssl_cert_free(retsc->cert);
4632 retsc->cert = ssl_cert_dup(sc->cert);
4633 if (retsc->cert == NULL)
4637 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4638 (int)sc->sid_ctx_length))
4642 if (!ssl_dane_dup(retsc, sc))
4644 retsc->version = sc->version;
4645 retsc->options = sc->options;
4646 retsc->min_proto_version = sc->min_proto_version;
4647 retsc->max_proto_version = sc->max_proto_version;
4648 retsc->mode = sc->mode;
4649 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4650 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4651 retsc->msg_callback = sc->msg_callback;
4652 retsc->msg_callback_arg = sc->msg_callback_arg;
4653 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4654 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4655 retsc->generate_session_id = sc->generate_session_id;
4657 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4659 /* copy app data, a little dangerous perhaps */
4660 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4663 retsc->server = sc->server;
4664 if (sc->handshake_func) {
4666 SSL_set_accept_state(ret);
4668 SSL_set_connect_state(ret);
4670 retsc->shutdown = sc->shutdown;
4671 retsc->hit = sc->hit;
4673 retsc->default_passwd_callback = sc->default_passwd_callback;
4674 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4676 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4678 /* dup the cipher_list and cipher_list_by_id stacks */
4679 if (sc->cipher_list != NULL) {
4680 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4683 if (sc->cipher_list_by_id != NULL)
4684 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4688 /* Dup the client_CA list */
4689 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4690 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4700 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4702 if (s->enc_read_ctx != NULL) {
4703 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4704 s->enc_read_ctx = NULL;
4706 if (s->enc_write_ctx != NULL) {
4707 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4708 s->enc_write_ctx = NULL;
4710 #ifndef OPENSSL_NO_COMP
4711 COMP_CTX_free(s->expand);
4713 COMP_CTX_free(s->compress);
4718 X509 *SSL_get_certificate(const SSL *s)
4720 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4725 if (sc->cert != NULL)
4726 return sc->cert->key->x509;
4731 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4733 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4738 if (sc->cert != NULL)
4739 return sc->cert->key->privatekey;
4744 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4746 if (ctx->cert != NULL)
4747 return ctx->cert->key->x509;
4752 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4754 if (ctx->cert != NULL)
4755 return ctx->cert->key->privatekey;
4760 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4762 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4767 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4768 return sc->session->cipher;
4772 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4774 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4779 return sc->s3.tmp.new_cipher;
4782 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4784 #ifndef OPENSSL_NO_COMP
4785 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4790 /* TODO(RECLAYER): Remove me once SSLv3/DTLS moved to write record layer */
4791 if (SSL_CONNECTION_IS_DTLS(sc) || sc->version == SSL3_VERSION)
4792 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4794 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4800 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4802 #ifndef OPENSSL_NO_COMP
4803 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4808 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4814 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4818 if (s->bbio != NULL) {
4819 /* Already buffered. */
4823 bbio = BIO_new(BIO_f_buffer());
4824 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4826 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4830 s->wbio = BIO_push(bbio, s->wbio);
4832 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4837 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4839 /* callers ensure s is never null */
4840 if (s->bbio == NULL)
4843 s->wbio = BIO_pop(s->wbio);
4844 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4852 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4854 ctx->quiet_shutdown = mode;
4857 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4859 return ctx->quiet_shutdown;
4862 void SSL_set_quiet_shutdown(SSL *s, int mode)
4864 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4866 /* TODO(QUIC): Do we want this for QUIC? */
4870 sc->quiet_shutdown = mode;
4873 int SSL_get_quiet_shutdown(const SSL *s)
4875 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4877 /* TODO(QUIC): Do we want this for QUIC? */
4881 return sc->quiet_shutdown;
4884 void SSL_set_shutdown(SSL *s, int mode)
4886 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4888 /* TODO(QUIC): Do we want this for QUIC? */
4892 sc->shutdown = mode;
4895 int SSL_get_shutdown(const SSL *s)
4897 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4899 /* TODO(QUIC): Do we want this for QUIC? */
4903 return sc->shutdown;
4906 int SSL_version(const SSL *s)
4908 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4910 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4917 int SSL_client_version(const SSL *s)
4919 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4921 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4925 return sc->client_version;
4928 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4933 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4936 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4938 /* TODO(QUIC): Do we need this for QUIC support? */
4942 if (ssl->ctx == ctx)
4945 ctx = sc->session_ctx;
4946 new_cert = ssl_cert_dup(ctx->cert);
4947 if (new_cert == NULL) {
4951 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4952 ssl_cert_free(new_cert);
4956 ssl_cert_free(sc->cert);
4957 sc->cert = new_cert;
4960 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4961 * so setter APIs must prevent invalid lengths from entering the system.
4963 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4967 * If the session ID context matches that of the parent SSL_CTX,
4968 * inherit it from the new SSL_CTX as well. If however the context does
4969 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4970 * leave it unchanged.
4972 if ((ssl->ctx != NULL) &&
4973 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4974 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4975 sc->sid_ctx_length = ctx->sid_ctx_length;
4976 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4979 SSL_CTX_up_ref(ctx);
4980 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4986 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4988 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4992 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4994 X509_LOOKUP *lookup;
4996 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5000 /* We ignore errors, in case the directory doesn't exist */
5003 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5010 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5012 X509_LOOKUP *lookup;
5014 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5018 /* We ignore errors, in case the file doesn't exist */
5021 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5029 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5031 X509_LOOKUP *lookup;
5033 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5037 /* We ignore errors, in case the directory doesn't exist */
5040 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5047 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5049 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5053 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5055 return X509_STORE_load_path(ctx->cert_store, CApath);
5058 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5060 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5064 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5067 if (CAfile == NULL && CApath == NULL)
5069 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5071 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5076 void SSL_set_info_callback(SSL *ssl,
5077 void (*cb) (const SSL *ssl, int type, int val))
5079 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5084 sc->info_callback = cb;
5088 * One compiler (Diab DCC) doesn't like argument names in returned function
5091 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5094 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5099 return sc->info_callback;
5102 void SSL_set_verify_result(SSL *ssl, long arg)
5104 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5109 sc->verify_result = arg;
5112 long SSL_get_verify_result(const SSL *ssl)
5114 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5119 return sc->verify_result;
5122 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5124 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5130 return sizeof(sc->s3.client_random);
5131 if (outlen > sizeof(sc->s3.client_random))
5132 outlen = sizeof(sc->s3.client_random);
5133 memcpy(out, sc->s3.client_random, outlen);
5137 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5139 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5145 return sizeof(sc->s3.server_random);
5146 if (outlen > sizeof(sc->s3.server_random))
5147 outlen = sizeof(sc->s3.server_random);
5148 memcpy(out, sc->s3.server_random, outlen);
5152 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5153 unsigned char *out, size_t outlen)
5156 return session->master_key_length;
5157 if (outlen > session->master_key_length)
5158 outlen = session->master_key_length;
5159 memcpy(out, session->master_key, outlen);
5163 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5166 if (len > sizeof(sess->master_key))
5169 memcpy(sess->master_key, in, len);
5170 sess->master_key_length = len;
5175 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5177 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5180 void *SSL_get_ex_data(const SSL *s, int idx)
5182 return CRYPTO_get_ex_data(&s->ex_data, idx);
5185 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5187 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5190 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5192 return CRYPTO_get_ex_data(&s->ex_data, idx);
5195 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5197 return ctx->cert_store;
5200 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5202 X509_STORE_free(ctx->cert_store);
5203 ctx->cert_store = store;
5206 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5209 X509_STORE_up_ref(store);
5210 SSL_CTX_set_cert_store(ctx, store);
5213 int SSL_want(const SSL *s)
5215 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5223 #ifndef OPENSSL_NO_PSK
5224 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5226 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5227 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5230 OPENSSL_free(ctx->cert->psk_identity_hint);
5231 if (identity_hint != NULL) {
5232 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5233 if (ctx->cert->psk_identity_hint == NULL)
5236 ctx->cert->psk_identity_hint = NULL;
5240 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5242 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5247 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5248 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5251 OPENSSL_free(sc->cert->psk_identity_hint);
5252 if (identity_hint != NULL) {
5253 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5254 if (sc->cert->psk_identity_hint == NULL)
5257 sc->cert->psk_identity_hint = NULL;
5261 const char *SSL_get_psk_identity_hint(const SSL *s)
5263 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5265 if (sc == NULL || sc->session == NULL)
5268 return sc->session->psk_identity_hint;
5271 const char *SSL_get_psk_identity(const SSL *s)
5273 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5275 if (sc == NULL || sc->session == NULL)
5278 return sc->session->psk_identity;
5281 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5283 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5288 sc->psk_client_callback = cb;
5291 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5293 ctx->psk_client_callback = cb;
5296 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5298 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5303 sc->psk_server_callback = cb;
5306 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5308 ctx->psk_server_callback = cb;
5312 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5314 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5319 sc->psk_find_session_cb = cb;
5322 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5323 SSL_psk_find_session_cb_func cb)
5325 ctx->psk_find_session_cb = cb;
5328 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5330 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5335 sc->psk_use_session_cb = cb;
5338 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5339 SSL_psk_use_session_cb_func cb)
5341 ctx->psk_use_session_cb = cb;
5344 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5345 void (*cb) (int write_p, int version,
5346 int content_type, const void *buf,
5347 size_t len, SSL *ssl, void *arg))
5349 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5352 void SSL_set_msg_callback(SSL *ssl,
5353 void (*cb) (int write_p, int version,
5354 int content_type, const void *buf,
5355 size_t len, SSL *ssl, void *arg))
5357 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5360 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5361 int (*cb) (SSL *ssl,
5365 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5366 (void (*)(void))cb);
5369 void SSL_set_not_resumable_session_callback(SSL *ssl,
5370 int (*cb) (SSL *ssl,
5371 int is_forward_secure))
5373 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5374 (void (*)(void))cb);
5377 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5378 size_t (*cb) (SSL *ssl, int type,
5379 size_t len, void *arg))
5381 ctx->record_padding_cb = cb;
5384 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5386 ctx->record_padding_arg = arg;
5389 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5391 return ctx->record_padding_arg;
5394 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5396 /* block size of 0 or 1 is basically no padding */
5397 if (block_size == 1)
5398 ctx->block_padding = 0;
5399 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5400 ctx->block_padding = block_size;
5406 int SSL_set_record_padding_callback(SSL *ssl,
5407 size_t (*cb) (SSL *ssl, int type,
5408 size_t len, void *arg))
5411 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5416 b = SSL_get_wbio(ssl);
5417 if (b == NULL || !BIO_get_ktls_send(b)) {
5418 sc->rlayer.record_padding_cb = cb;
5424 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5426 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5431 sc->rlayer.record_padding_arg = arg;
5434 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5436 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5441 return sc->rlayer.record_padding_arg;
5444 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5446 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5451 /* block size of 0 or 1 is basically no padding */
5452 if (block_size == 1)
5453 sc->rlayer.block_padding = 0;
5454 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5455 sc->rlayer.block_padding = block_size;
5461 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5463 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5468 sc->num_tickets = num_tickets;
5473 size_t SSL_get_num_tickets(const SSL *s)
5475 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5480 return sc->num_tickets;
5483 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5485 ctx->num_tickets = num_tickets;
5490 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5492 return ctx->num_tickets;
5496 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5497 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5498 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5499 * Returns the newly allocated ctx;
5502 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5504 ssl_clear_hash_ctx(hash);
5505 *hash = EVP_MD_CTX_new();
5506 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5507 EVP_MD_CTX_free(*hash);
5514 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5517 EVP_MD_CTX_free(*hash);
5521 /* Retrieve handshake hashes */
5522 int ssl_handshake_hash(SSL_CONNECTION *s,
5523 unsigned char *out, size_t outlen,
5526 EVP_MD_CTX *ctx = NULL;
5527 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5528 int hashleni = EVP_MD_CTX_get_size(hdgst);
5531 if (hashleni < 0 || (size_t)hashleni > outlen) {
5532 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5536 ctx = EVP_MD_CTX_new();
5538 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5542 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5543 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5544 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5548 *hashlen = hashleni;
5552 EVP_MD_CTX_free(ctx);
5556 int SSL_session_reused(const SSL *s)
5558 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5566 int SSL_is_server(const SSL *s)
5568 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5576 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5577 void SSL_set_debug(SSL *s, int debug)
5579 /* Old function was do-nothing anyway... */
5585 void SSL_set_security_level(SSL *s, int level)
5587 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5592 sc->cert->sec_level = level;
5595 int SSL_get_security_level(const SSL *s)
5597 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5602 return sc->cert->sec_level;
5605 void SSL_set_security_callback(SSL *s,
5606 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5607 int op, int bits, int nid,
5608 void *other, void *ex))
5610 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5615 sc->cert->sec_cb = cb;
5618 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5619 const SSL_CTX *ctx, int op,
5620 int bits, int nid, void *other,
5622 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5627 return sc->cert->sec_cb;
5630 void SSL_set0_security_ex_data(SSL *s, void *ex)
5632 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5637 sc->cert->sec_ex = ex;
5640 void *SSL_get0_security_ex_data(const SSL *s)
5642 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5647 return sc->cert->sec_ex;
5650 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5652 ctx->cert->sec_level = level;
5655 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5657 return ctx->cert->sec_level;
5660 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5661 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5662 int op, int bits, int nid,
5663 void *other, void *ex))
5665 ctx->cert->sec_cb = cb;
5668 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5674 return ctx->cert->sec_cb;
5677 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5679 ctx->cert->sec_ex = ex;
5682 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5684 return ctx->cert->sec_ex;
5687 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5689 return ctx->options;
5692 uint64_t SSL_get_options(const SSL *s)
5694 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5702 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5704 return ctx->options |= op;
5707 uint64_t SSL_set_options(SSL *s, uint64_t op)
5709 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5710 OSSL_PARAM options[2], *opts = options;
5717 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5719 *opts = OSSL_PARAM_construct_end();
5721 /* Ignore return value */
5722 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5727 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5729 return ctx->options &= ~op;
5732 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5734 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5739 return sc->options &= ~op;
5742 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5744 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5749 return sc->verified_chain;
5752 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5754 #ifndef OPENSSL_NO_CT
5757 * Moves SCTs from the |src| stack to the |dst| stack.
5758 * The source of each SCT will be set to |origin|.
5759 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5761 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5763 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5764 sct_source_t origin)
5770 *dst = sk_SCT_new_null();
5772 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5777 while (sk_SCT_num(src) > 0) {
5778 sct = sk_SCT_pop(src);
5779 if (SCT_set_source(sct, origin) != 1)
5782 if (sk_SCT_push(*dst, sct) <= 0)
5790 sk_SCT_push(src, sct); /* Put the SCT back */
5795 * Look for data collected during ServerHello and parse if found.
5796 * Returns the number of SCTs extracted.
5798 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5800 int scts_extracted = 0;
5802 if (s->ext.scts != NULL) {
5803 const unsigned char *p = s->ext.scts;
5804 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5806 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5808 SCT_LIST_free(scts);
5811 return scts_extracted;
5815 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5816 * contains an SCT X509 extension. They will be stored in |s->scts|.
5818 * - The number of SCTs extracted, assuming an OCSP response exists.
5819 * - 0 if no OCSP response exists or it contains no SCTs.
5820 * - A negative integer if an error occurs.
5822 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5824 # ifndef OPENSSL_NO_OCSP
5825 int scts_extracted = 0;
5826 const unsigned char *p;
5827 OCSP_BASICRESP *br = NULL;
5828 OCSP_RESPONSE *rsp = NULL;
5829 STACK_OF(SCT) *scts = NULL;
5832 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5835 p = s->ext.ocsp.resp;
5836 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5840 br = OCSP_response_get1_basic(rsp);
5844 for (i = 0; i < OCSP_resp_count(br); ++i) {
5845 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5851 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5853 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5854 if (scts_extracted < 0)
5858 SCT_LIST_free(scts);
5859 OCSP_BASICRESP_free(br);
5860 OCSP_RESPONSE_free(rsp);
5861 return scts_extracted;
5863 /* Behave as if no OCSP response exists */
5869 * Attempts to extract SCTs from the peer certificate.
5870 * Return the number of SCTs extracted, or a negative integer if an error
5873 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5875 int scts_extracted = 0;
5876 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5879 STACK_OF(SCT) *scts =
5880 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5883 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5885 SCT_LIST_free(scts);
5888 return scts_extracted;
5892 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5893 * response (if it exists) and X509v3 extensions in the certificate.
5894 * Returns NULL if an error occurs.
5896 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5898 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5903 if (!sc->scts_parsed) {
5904 if (ct_extract_tls_extension_scts(sc) < 0 ||
5905 ct_extract_ocsp_response_scts(sc) < 0 ||
5906 ct_extract_x509v3_extension_scts(sc) < 0)
5909 sc->scts_parsed = 1;
5916 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5917 const STACK_OF(SCT) *scts, void *unused_arg)
5922 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5923 const STACK_OF(SCT) *scts, void *unused_arg)
5925 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5928 for (i = 0; i < count; ++i) {
5929 SCT *sct = sk_SCT_value(scts, i);
5930 int status = SCT_get_validation_status(sct);
5932 if (status == SCT_VALIDATION_STATUS_VALID)
5935 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5939 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5942 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5948 * Since code exists that uses the custom extension handler for CT, look
5949 * for this and throw an error if they have already registered to use CT.
5951 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5952 TLSEXT_TYPE_signed_certificate_timestamp))
5954 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5958 if (callback != NULL) {
5960 * If we are validating CT, then we MUST accept SCTs served via OCSP
5962 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5966 sc->ct_validation_callback = callback;
5967 sc->ct_validation_callback_arg = arg;
5972 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5973 ssl_ct_validation_cb callback, void *arg)
5976 * Since code exists that uses the custom extension handler for CT, look for
5977 * this and throw an error if they have already registered to use CT.
5979 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5980 TLSEXT_TYPE_signed_certificate_timestamp))
5982 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5986 ctx->ct_validation_callback = callback;
5987 ctx->ct_validation_callback_arg = arg;
5991 int SSL_ct_is_enabled(const SSL *s)
5993 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5998 return sc->ct_validation_callback != NULL;
6001 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6003 return ctx->ct_validation_callback != NULL;
6006 int ssl_validate_ct(SSL_CONNECTION *s)
6009 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6011 SSL_DANE *dane = &s->dane;
6012 CT_POLICY_EVAL_CTX *ctx = NULL;
6013 const STACK_OF(SCT) *scts;
6016 * If no callback is set, the peer is anonymous, or its chain is invalid,
6017 * skip SCT validation - just return success. Applications that continue
6018 * handshakes without certificates, with unverified chains, or pinned leaf
6019 * certificates are outside the scope of the WebPKI and CT.
6021 * The above exclusions notwithstanding the vast majority of peers will
6022 * have rather ordinary certificate chains validated by typical
6023 * applications that perform certificate verification and therefore will
6024 * process SCTs when enabled.
6026 if (s->ct_validation_callback == NULL || cert == NULL ||
6027 s->verify_result != X509_V_OK ||
6028 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6032 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6033 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6035 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6036 switch (dane->mtlsa->usage) {
6037 case DANETLS_USAGE_DANE_TA:
6038 case DANETLS_USAGE_DANE_EE:
6043 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6044 SSL_CONNECTION_GET_CTX(s)->propq);
6046 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6050 issuer = sk_X509_value(s->verified_chain, 1);
6051 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6052 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6053 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6054 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6055 CT_POLICY_EVAL_CTX_set_time(
6056 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6058 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6061 * This function returns success (> 0) only when all the SCTs are valid, 0
6062 * when some are invalid, and < 0 on various internal errors (out of
6063 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6064 * reason to abort the handshake, that decision is up to the callback.
6065 * Therefore, we error out only in the unexpected case that the return
6066 * value is negative.
6068 * XXX: One might well argue that the return value of this function is an
6069 * unfortunate design choice. Its job is only to determine the validation
6070 * status of each of the provided SCTs. So long as it correctly separates
6071 * the wheat from the chaff it should return success. Failure in this case
6072 * ought to correspond to an inability to carry out its duties.
6074 if (SCT_LIST_validate(scts, ctx) < 0) {
6075 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6079 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6081 ret = 0; /* This function returns 0 on failure */
6083 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6086 CT_POLICY_EVAL_CTX_free(ctx);
6088 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6089 * failure return code here. Also the application may wish the complete
6090 * the handshake, and then disconnect cleanly at a higher layer, after
6091 * checking the verification status of the completed connection.
6093 * We therefore force a certificate verification failure which will be
6094 * visible via SSL_get_verify_result() and cached as part of any resumed
6097 * Note: the permissive callback is for information gathering only, always
6098 * returns success, and does not affect verification status. Only the
6099 * strict callback or a custom application-specified callback can trigger
6100 * connection failure or record a verification error.
6103 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6107 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6109 switch (validation_mode) {
6111 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6113 case SSL_CT_VALIDATION_PERMISSIVE:
6114 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6115 case SSL_CT_VALIDATION_STRICT:
6116 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6120 int SSL_enable_ct(SSL *s, int validation_mode)
6122 switch (validation_mode) {
6124 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6126 case SSL_CT_VALIDATION_PERMISSIVE:
6127 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6128 case SSL_CT_VALIDATION_STRICT:
6129 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6133 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6135 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6138 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6140 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6143 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6145 CTLOG_STORE_free(ctx->ctlog_store);
6146 ctx->ctlog_store = logs;
6149 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6151 return ctx->ctlog_store;
6154 #endif /* OPENSSL_NO_CT */
6156 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6159 c->client_hello_cb = cb;
6160 c->client_hello_cb_arg = arg;
6163 int SSL_client_hello_isv2(SSL *s)
6165 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6170 if (sc->clienthello == NULL)
6172 return sc->clienthello->isv2;
6175 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6177 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6182 if (sc->clienthello == NULL)
6184 return sc->clienthello->legacy_version;
6187 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6189 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6194 if (sc->clienthello == NULL)
6197 *out = sc->clienthello->random;
6198 return SSL3_RANDOM_SIZE;
6201 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6203 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6208 if (sc->clienthello == NULL)
6211 *out = sc->clienthello->session_id;
6212 return sc->clienthello->session_id_len;
6215 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6217 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6222 if (sc->clienthello == NULL)
6225 *out = PACKET_data(&sc->clienthello->ciphersuites);
6226 return PACKET_remaining(&sc->clienthello->ciphersuites);
6229 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6231 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6236 if (sc->clienthello == NULL)
6239 *out = sc->clienthello->compressions;
6240 return sc->clienthello->compressions_len;
6243 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6248 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6253 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6255 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6256 ext = sc->clienthello->pre_proc_exts + i;
6265 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6267 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6268 ext = sc->clienthello->pre_proc_exts + i;
6270 if (ext->received_order >= num)
6272 present[ext->received_order] = ext->type;
6279 OPENSSL_free(present);
6283 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6287 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6292 if (sc->clienthello == NULL || num_exts == NULL)
6294 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6295 ext = sc->clienthello->pre_proc_exts + i;
6307 if (*num_exts < num)
6309 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6310 ext = sc->clienthello->pre_proc_exts + i;
6312 if (ext->received_order >= num)
6314 exts[ext->received_order] = ext->type;
6321 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6326 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6331 if (sc->clienthello == NULL)
6333 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6334 r = sc->clienthello->pre_proc_exts + i;
6335 if (r->present && r->type == type) {
6337 *out = PACKET_data(&r->data);
6339 *outlen = PACKET_remaining(&r->data);
6346 int SSL_free_buffers(SSL *ssl)
6349 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6356 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6359 RECORD_LAYER_release(rl);
6363 int SSL_alloc_buffers(SSL *ssl)
6365 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6370 return ssl3_setup_buffers(sc);
6373 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6375 ctx->keylog_callback = cb;
6378 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6380 return ctx->keylog_callback;
6383 static int nss_keylog_int(const char *prefix,
6385 const uint8_t *parameter_1,
6386 size_t parameter_1_len,
6387 const uint8_t *parameter_2,
6388 size_t parameter_2_len)
6391 char *cursor = NULL;
6395 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6397 if (sctx->keylog_callback == NULL)
6401 * Our output buffer will contain the following strings, rendered with
6402 * space characters in between, terminated by a NULL character: first the
6403 * prefix, then the first parameter, then the second parameter. The
6404 * meaning of each parameter depends on the specific key material being
6405 * logged. Note that the first and second parameters are encoded in
6406 * hexadecimal, so we need a buffer that is twice their lengths.
6408 prefix_len = strlen(prefix);
6409 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6410 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6413 strcpy(cursor, prefix);
6414 cursor += prefix_len;
6417 for (i = 0; i < parameter_1_len; i++) {
6418 sprintf(cursor, "%02x", parameter_1[i]);
6423 for (i = 0; i < parameter_2_len; i++) {
6424 sprintf(cursor, "%02x", parameter_2[i]);
6429 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6430 OPENSSL_clear_free(out, out_len);
6435 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6436 const uint8_t *encrypted_premaster,
6437 size_t encrypted_premaster_len,
6438 const uint8_t *premaster,
6439 size_t premaster_len)
6441 if (encrypted_premaster_len < 8) {
6442 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6446 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6447 return nss_keylog_int("RSA",
6449 encrypted_premaster,
6455 int ssl_log_secret(SSL_CONNECTION *sc,
6457 const uint8_t *secret,
6460 return nss_keylog_int(label,
6462 sc->s3.client_random,
6468 #define SSLV2_CIPHER_LEN 3
6470 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6474 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6476 if (PACKET_remaining(cipher_suites) == 0) {
6477 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6481 if (PACKET_remaining(cipher_suites) % n != 0) {
6482 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6486 OPENSSL_free(s->s3.tmp.ciphers_raw);
6487 s->s3.tmp.ciphers_raw = NULL;
6488 s->s3.tmp.ciphers_rawlen = 0;
6491 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6492 PACKET sslv2ciphers = *cipher_suites;
6493 unsigned int leadbyte;
6497 * We store the raw ciphers list in SSLv3+ format so we need to do some
6498 * preprocessing to convert the list first. If there are any SSLv2 only
6499 * ciphersuites with a non-zero leading byte then we are going to
6500 * slightly over allocate because we won't store those. But that isn't a
6503 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6504 s->s3.tmp.ciphers_raw = raw;
6506 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6509 for (s->s3.tmp.ciphers_rawlen = 0;
6510 PACKET_remaining(&sslv2ciphers) > 0;
6511 raw += TLS_CIPHER_LEN) {
6512 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6514 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6517 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6518 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6519 OPENSSL_free(s->s3.tmp.ciphers_raw);
6520 s->s3.tmp.ciphers_raw = NULL;
6521 s->s3.tmp.ciphers_rawlen = 0;
6525 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6527 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6528 &s->s3.tmp.ciphers_rawlen)) {
6529 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6535 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6536 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6537 STACK_OF(SSL_CIPHER) **scsvs)
6540 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6545 if (!PACKET_buf_init(&pkt, bytes, len))
6547 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6550 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6551 STACK_OF(SSL_CIPHER) **skp,
6552 STACK_OF(SSL_CIPHER) **scsvs_out,
6553 int sslv2format, int fatal)
6555 const SSL_CIPHER *c;
6556 STACK_OF(SSL_CIPHER) *sk = NULL;
6557 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6559 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6560 unsigned char cipher[SSLV2_CIPHER_LEN];
6562 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6564 if (PACKET_remaining(cipher_suites) == 0) {
6566 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6568 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6572 if (PACKET_remaining(cipher_suites) % n != 0) {
6574 SSLfatal(s, SSL_AD_DECODE_ERROR,
6575 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6577 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6581 sk = sk_SSL_CIPHER_new_null();
6582 scsvs = sk_SSL_CIPHER_new_null();
6583 if (sk == NULL || scsvs == NULL) {
6585 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6587 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6591 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6593 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6594 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6595 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6597 if (sslv2format && cipher[0] != '\0')
6600 /* For SSLv2-compat, ignore leading 0-byte. */
6601 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6603 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6604 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6606 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6608 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6613 if (PACKET_remaining(cipher_suites) > 0) {
6615 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6617 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6624 sk_SSL_CIPHER_free(sk);
6625 if (scsvs_out != NULL)
6628 sk_SSL_CIPHER_free(scsvs);
6631 sk_SSL_CIPHER_free(sk);
6632 sk_SSL_CIPHER_free(scsvs);
6636 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6638 ctx->max_early_data = max_early_data;
6643 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6645 return ctx->max_early_data;
6648 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6650 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6655 sc->max_early_data = max_early_data;
6660 uint32_t SSL_get_max_early_data(const SSL *s)
6662 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6667 return sc->max_early_data;
6670 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6672 ctx->recv_max_early_data = recv_max_early_data;
6677 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6679 return ctx->recv_max_early_data;
6682 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6684 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6689 sc->recv_max_early_data = recv_max_early_data;
6694 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6696 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6701 return sc->recv_max_early_data;
6704 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6706 /* Return any active Max Fragment Len extension */
6707 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6708 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6710 /* return current SSL connection setting */
6711 return sc->max_send_fragment;
6714 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6716 /* Return a value regarding an active Max Fragment Len extension */
6717 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6718 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6719 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6721 /* else limit |split_send_fragment| to current |max_send_fragment| */
6722 if (sc->split_send_fragment > sc->max_send_fragment)
6723 return sc->max_send_fragment;
6725 /* return current SSL connection setting */
6726 return sc->split_send_fragment;
6729 int SSL_stateless(SSL *s)
6732 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6734 /* TODO(QUIC): This will need further work. */
6738 /* Ensure there is no state left over from a previous invocation */
6744 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6745 ret = SSL_accept(s);
6746 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6748 if (ret > 0 && sc->ext.cookieok)
6751 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6757 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6759 ctx->pha_enabled = val;
6762 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6764 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6769 sc->pha_enabled = val;
6772 int SSL_verify_client_post_handshake(SSL *ssl)
6774 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6779 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6780 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6784 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6788 if (!SSL_is_init_finished(ssl)) {
6789 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6793 switch (sc->post_handshake_auth) {
6795 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6798 case SSL_PHA_EXT_SENT:
6799 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6801 case SSL_PHA_EXT_RECEIVED:
6803 case SSL_PHA_REQUEST_PENDING:
6804 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6806 case SSL_PHA_REQUESTED:
6807 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6811 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6813 /* checks verify_mode and algorithm_auth */
6814 if (!send_certificate_request(sc)) {
6815 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6816 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6820 ossl_statem_set_in_init(sc, 1);
6824 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6825 SSL_CTX_generate_session_ticket_fn gen_cb,
6826 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6829 ctx->generate_ticket_cb = gen_cb;
6830 ctx->decrypt_ticket_cb = dec_cb;
6831 ctx->ticket_cb_data = arg;
6835 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6836 SSL_allow_early_data_cb_fn cb,
6839 ctx->allow_early_data_cb = cb;
6840 ctx->allow_early_data_cb_data = arg;
6843 void SSL_set_allow_early_data_cb(SSL *s,
6844 SSL_allow_early_data_cb_fn cb,
6847 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6852 sc->allow_early_data_cb = cb;
6853 sc->allow_early_data_cb_data = arg;
6856 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6858 const char *properties)
6860 const EVP_CIPHER *ciph;
6862 ciph = tls_get_cipher_from_engine(nid);
6867 * If there is no engine cipher then we do an explicit fetch. This may fail
6868 * and that could be ok
6871 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6877 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6879 /* Don't up-ref an implicit EVP_CIPHER */
6880 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6884 * The cipher was explicitly fetched and therefore it is safe to cast
6887 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6890 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6895 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6897 * The cipher was explicitly fetched and therefore it is safe to cast
6900 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6904 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6906 const char *properties)
6910 md = tls_get_digest_from_engine(nid);
6914 /* Otherwise we do an explicit fetch */
6916 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6921 int ssl_evp_md_up_ref(const EVP_MD *md)
6923 /* Don't up-ref an implicit EVP_MD */
6924 if (EVP_MD_get0_provider(md) == NULL)
6928 * The digest was explicitly fetched and therefore it is safe to cast
6931 return EVP_MD_up_ref((EVP_MD *)md);
6934 void ssl_evp_md_free(const EVP_MD *md)
6939 if (EVP_MD_get0_provider(md) != NULL) {
6941 * The digest was explicitly fetched and therefore it is safe to cast
6944 EVP_MD_free((EVP_MD *)md);
6948 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6950 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6955 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6956 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6957 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6960 EVP_PKEY_free(sc->cert->dh_tmp);
6961 sc->cert->dh_tmp = dhpkey;
6965 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6967 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6968 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6969 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6972 EVP_PKEY_free(ctx->cert->dh_tmp);
6973 ctx->cert->dh_tmp = dhpkey;