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/nelem.h"
27 #include "internal/refcount.h"
28 #include "internal/ktls.h"
29 #include "quic/quic_local.h"
31 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
32 unsigned char *s, size_t t, size_t *u)
34 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
37 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
39 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
42 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
43 size_t s, unsigned char *t)
45 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
48 static int ssl_undefined_function_6(int r)
50 return ssl_undefined_function(NULL);
53 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
54 size_t s, const char *t, size_t u,
55 const unsigned char *v, size_t w, int x)
57 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
60 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
62 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
65 SSL3_ENC_METHOD ssl3_undef_enc_method = {
66 ssl_undefined_function_8,
67 ssl_undefined_function_3,
68 ssl_undefined_function_4,
69 ssl_undefined_function_5,
70 NULL, /* client_finished_label */
71 0, /* client_finished_label_len */
72 NULL, /* server_finished_label */
73 0, /* server_finished_label_len */
74 ssl_undefined_function_6,
75 ssl_undefined_function_7,
78 struct ssl_async_args {
82 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
84 int (*func_read) (SSL *, void *, size_t, size_t *);
85 int (*func_write) (SSL *, const void *, size_t, size_t *);
86 int (*func_other) (SSL *);
96 DANETLS_MATCHING_FULL, 0, NID_undef
99 DANETLS_MATCHING_2256, 1, NID_sha256
102 DANETLS_MATCHING_2512, 2, NID_sha512
106 static int dane_ctx_enable(struct dane_ctx_st *dctx)
108 const EVP_MD **mdevp;
110 uint8_t mdmax = DANETLS_MATCHING_LAST;
111 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
114 if (dctx->mdevp != NULL)
117 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
118 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
120 if (mdord == NULL || mdevp == NULL) {
126 /* Install default entries */
127 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
130 if (dane_mds[i].nid == NID_undef ||
131 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
133 mdevp[dane_mds[i].mtype] = md;
134 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
144 static void dane_ctx_final(struct dane_ctx_st *dctx)
146 OPENSSL_free(dctx->mdevp);
149 OPENSSL_free(dctx->mdord);
154 static void tlsa_free(danetls_record *t)
158 OPENSSL_free(t->data);
159 EVP_PKEY_free(t->spki);
163 static void dane_final(SSL_DANE *dane)
165 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
168 OSSL_STACK_OF_X509_free(dane->certs);
171 X509_free(dane->mcert);
179 * dane_copy - Copy dane configuration, sans verification state.
181 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
186 if (!DANETLS_ENABLED(&from->dane))
189 num = sk_danetls_record_num(from->dane.trecs);
190 dane_final(&to->dane);
191 to->dane.flags = from->dane.flags;
192 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
193 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
195 if (to->dane.trecs == NULL) {
196 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
200 for (i = 0; i < num; ++i) {
201 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
203 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
204 t->selector, t->mtype, t->data, t->dlen) <= 0)
210 static int dane_mtype_set(struct dane_ctx_st *dctx,
211 const EVP_MD *md, uint8_t mtype, uint8_t ord)
215 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
216 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
220 if (mtype > dctx->mdmax) {
221 const EVP_MD **mdevp;
223 int n = ((int)mtype) + 1;
225 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
230 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
235 /* Zero-fill any gaps */
236 for (i = dctx->mdmax + 1; i < mtype; ++i) {
244 dctx->mdevp[mtype] = md;
245 /* Coerce ordinal of disabled matching types to 0 */
246 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
251 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
253 if (mtype > dane->dctx->mdmax)
255 return dane->dctx->mdevp[mtype];
258 static int dane_tlsa_add(SSL_DANE *dane,
261 uint8_t mtype, const unsigned char *data, size_t dlen)
264 const EVP_MD *md = NULL;
265 int ilen = (int)dlen;
269 if (dane->trecs == NULL) {
270 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
274 if (ilen < 0 || dlen != (size_t)ilen) {
275 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
279 if (usage > DANETLS_USAGE_LAST) {
280 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
284 if (selector > DANETLS_SELECTOR_LAST) {
285 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
289 if (mtype != DANETLS_MATCHING_FULL) {
290 md = tlsa_md_get(dane, mtype);
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
297 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
298 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
302 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
306 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
310 t->selector = selector;
312 t->data = OPENSSL_malloc(dlen);
313 if (t->data == NULL) {
317 memcpy(t->data, data, dlen);
320 /* Validate and cache full certificate or public key */
321 if (mtype == DANETLS_MATCHING_FULL) {
322 const unsigned char *p = data;
324 EVP_PKEY *pkey = NULL;
327 case DANETLS_SELECTOR_CERT:
328 if (!d2i_X509(&cert, &p, ilen) || p < data ||
329 dlen != (size_t)(p - data)) {
331 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
334 if (X509_get0_pubkey(cert) == NULL) {
336 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
340 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
346 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
347 * records that contain full certificates of trust-anchors that are
348 * not present in the wire chain. For usage PKIX-TA(0), we augment
349 * the chain with untrusted Full(0) certificates from DNS, in case
350 * they are missing from the chain.
352 if ((dane->certs == NULL &&
353 (dane->certs = sk_X509_new_null()) == NULL) ||
354 !sk_X509_push(dane->certs, cert)) {
355 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
362 case DANETLS_SELECTOR_SPKI:
363 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
364 dlen != (size_t)(p - data)) {
366 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
371 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
372 * records that contain full bare keys of trust-anchors that are
373 * not present in the wire chain.
375 if (usage == DANETLS_USAGE_DANE_TA)
384 * Find the right insertion point for the new record.
386 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
387 * they can be processed first, as they require no chain building, and no
388 * expiration or hostname checks. Because DANE-EE(3) is numerically
389 * largest, this is accomplished via descending sort by "usage".
391 * We also sort in descending order by matching ordinal to simplify
392 * the implementation of digest agility in the verification code.
394 * The choice of order for the selector is not significant, so we
395 * use the same descending order for consistency.
397 num = sk_danetls_record_num(dane->trecs);
398 for (i = 0; i < num; ++i) {
399 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
401 if (rec->usage > usage)
403 if (rec->usage < usage)
405 if (rec->selector > selector)
407 if (rec->selector < selector)
409 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
414 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
416 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
419 dane->umask |= DANETLS_USAGE_BIT(usage);
425 * Return 0 if there is only one version configured and it was disabled
426 * at configure time. Return 1 otherwise.
428 static int ssl_check_allowed_versions(int min_version, int max_version)
430 int minisdtls = 0, maxisdtls = 0;
432 /* Figure out if we're doing DTLS versions or TLS versions */
433 if (min_version == DTLS1_BAD_VER
434 || min_version >> 8 == DTLS1_VERSION_MAJOR)
436 if (max_version == DTLS1_BAD_VER
437 || max_version >> 8 == DTLS1_VERSION_MAJOR)
439 /* A wildcard version of 0 could be DTLS or TLS. */
440 if ((minisdtls && !maxisdtls && max_version != 0)
441 || (maxisdtls && !minisdtls && min_version != 0)) {
442 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
446 if (minisdtls || maxisdtls) {
447 /* Do DTLS version checks. */
448 if (min_version == 0)
449 /* Ignore DTLS1_BAD_VER */
450 min_version = DTLS1_VERSION;
451 if (max_version == 0)
452 max_version = DTLS1_2_VERSION;
453 #ifdef OPENSSL_NO_DTLS1_2
454 if (max_version == DTLS1_2_VERSION)
455 max_version = DTLS1_VERSION;
457 #ifdef OPENSSL_NO_DTLS1
458 if (min_version == DTLS1_VERSION)
459 min_version = DTLS1_2_VERSION;
461 /* Done massaging versions; do the check. */
463 #ifdef OPENSSL_NO_DTLS1
464 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
465 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
467 #ifdef OPENSSL_NO_DTLS1_2
468 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
469 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
474 /* Regular TLS version checks. */
475 if (min_version == 0)
476 min_version = SSL3_VERSION;
477 if (max_version == 0)
478 max_version = TLS1_3_VERSION;
479 #ifdef OPENSSL_NO_TLS1_3
480 if (max_version == TLS1_3_VERSION)
481 max_version = TLS1_2_VERSION;
483 #ifdef OPENSSL_NO_TLS1_2
484 if (max_version == TLS1_2_VERSION)
485 max_version = TLS1_1_VERSION;
487 #ifdef OPENSSL_NO_TLS1_1
488 if (max_version == TLS1_1_VERSION)
489 max_version = TLS1_VERSION;
491 #ifdef OPENSSL_NO_TLS1
492 if (max_version == TLS1_VERSION)
493 max_version = SSL3_VERSION;
495 #ifdef OPENSSL_NO_SSL3
496 if (min_version == SSL3_VERSION)
497 min_version = TLS1_VERSION;
499 #ifdef OPENSSL_NO_TLS1
500 if (min_version == TLS1_VERSION)
501 min_version = TLS1_1_VERSION;
503 #ifdef OPENSSL_NO_TLS1_1
504 if (min_version == TLS1_1_VERSION)
505 min_version = TLS1_2_VERSION;
507 #ifdef OPENSSL_NO_TLS1_2
508 if (min_version == TLS1_2_VERSION)
509 min_version = TLS1_3_VERSION;
511 /* Done massaging versions; do the check. */
513 #ifdef OPENSSL_NO_SSL3
514 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
516 #ifdef OPENSSL_NO_TLS1
517 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
519 #ifdef OPENSSL_NO_TLS1_1
520 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
522 #ifdef OPENSSL_NO_TLS1_2
523 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
525 #ifdef OPENSSL_NO_TLS1_3
526 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
534 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
536 * Define a VPROC function for HP NonStop build ssl library.
537 * This is used by platform version identification tools.
538 * Do not inline this procedure or make it static.
540 # define OPENSSL_VPROC_STRING_(x) x##_SSL
541 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
542 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
543 void OPENSSL_VPROC_FUNC(void) {}
546 static int clear_record_layer(SSL_CONNECTION *s)
550 /* We try and reset both record layers even if one fails */
552 ret = ssl_set_new_record_layer(s,
553 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
555 OSSL_RECORD_DIRECTION_READ,
556 OSSL_RECORD_PROTECTION_LEVEL_NONE, NULL, 0,
557 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
558 NID_undef, NULL, NULL, NULL);
560 ret &= ssl_set_new_record_layer(s,
561 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
563 OSSL_RECORD_DIRECTION_WRITE,
564 OSSL_RECORD_PROTECTION_LEVEL_NONE, NULL, 0,
565 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
566 NID_undef, NULL, NULL, NULL);
568 /* SSLfatal already called in the event of failure */
572 int SSL_clear(SSL *s)
574 if (s->method == NULL) {
575 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
579 return s->method->ssl_reset(s);
582 int ossl_ssl_connection_reset(SSL *s)
584 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
589 if (ssl_clear_bad_session(sc)) {
590 SSL_SESSION_free(sc->session);
593 SSL_SESSION_free(sc->psksession);
594 sc->psksession = NULL;
595 OPENSSL_free(sc->psksession_id);
596 sc->psksession_id = NULL;
597 sc->psksession_id_len = 0;
598 sc->hello_retry_request = 0;
599 sc->sent_tickets = 0;
605 if (sc->renegotiate) {
606 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
610 ossl_statem_clear(sc);
612 /* TODO(QUIC): Version handling not yet clear */
613 sc->version = s->method->version;
614 sc->client_version = sc->version;
615 sc->rwstate = SSL_NOTHING;
617 BUF_MEM_free(sc->init_buf);
619 sc->first_packet = 0;
621 sc->key_update = SSL_KEY_UPDATE_NONE;
622 memset(sc->ext.compress_certificate_from_peer, 0,
623 sizeof(sc->ext.compress_certificate_from_peer));
624 sc->ext.compress_certificate_sent = 0;
626 EVP_MD_CTX_free(sc->pha_dgst);
629 /* Reset DANE verification result state */
632 X509_free(sc->dane.mcert);
633 sc->dane.mcert = NULL;
634 sc->dane.mtlsa = NULL;
636 /* Clear the verification result peername */
637 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
639 /* Clear any shared connection state */
640 OPENSSL_free(sc->shared_sigalgs);
641 sc->shared_sigalgs = NULL;
642 sc->shared_sigalgslen = 0;
645 * Check to see if we were changed into a different method, if so, revert
648 if (s->method != s->defltmeth) {
649 s->method->ssl_deinit(s);
650 s->method = s->defltmeth;
651 if (!s->method->ssl_init(s))
654 if (!s->method->ssl_clear(s))
658 RECORD_LAYER_clear(&sc->rlayer);
659 BIO_free(sc->rlayer.rrlnext);
660 sc->rlayer.rrlnext = NULL;
662 if (!clear_record_layer(sc))
668 #ifndef OPENSSL_NO_DEPRECATED_3_0
669 /** Used to change an SSL_CTXs default SSL method type */
670 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
672 STACK_OF(SSL_CIPHER) *sk;
676 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
677 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
680 sk = ssl_create_cipher_list(ctx,
681 ctx->tls13_ciphersuites,
683 &(ctx->cipher_list_by_id),
684 OSSL_default_cipher_list(), ctx->cert);
685 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
686 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
693 SSL *SSL_new(SSL_CTX *ctx)
696 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
699 if (ctx->method == NULL) {
700 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
703 return ctx->method->ssl_new(ctx);
706 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method, int type)
711 ssl->lock = CRYPTO_THREAD_lock_new();
712 if (ssl->lock == NULL)
715 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data)) {
716 CRYPTO_THREAD_lock_free(ssl->lock);
724 ssl->defltmeth = ssl->method = method;
729 SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, const SSL_METHOD *method)
734 s = OPENSSL_zalloc(sizeof(*s));
739 if (!ossl_ssl_init(ssl, ctx, method, SSL_TYPE_SSL_CONNECTION)) {
745 RECORD_LAYER_init(&s->rlayer, s);
747 s->options = ctx->options;
748 s->dane.flags = ctx->dane.flags;
749 s->min_proto_version = ctx->min_proto_version;
750 s->max_proto_version = ctx->max_proto_version;
752 s->max_cert_list = ctx->max_cert_list;
753 s->max_early_data = ctx->max_early_data;
754 s->recv_max_early_data = ctx->recv_max_early_data;
755 s->num_tickets = ctx->num_tickets;
756 s->pha_enabled = ctx->pha_enabled;
758 /* Shallow copy of the ciphersuites stack */
759 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
760 if (s->tls13_ciphersuites == NULL)
764 * Earlier library versions used to copy the pointer to the CERT, not
765 * its contents; only when setting new parameters for the per-SSL
766 * copy, ssl_cert_new would be called (and the direct reference to
767 * the per-SSL_CTX settings would be lost, but those still were
768 * indirectly accessed for various purposes, and for that reason they
769 * used to be known as s->ctx->default_cert). Now we don't look at the
770 * SSL_CTX's CERT after having duplicated it once.
772 s->cert = ssl_cert_dup(ctx->cert);
776 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
777 s->msg_callback = ctx->msg_callback;
778 s->msg_callback_arg = ctx->msg_callback_arg;
779 s->verify_mode = ctx->verify_mode;
780 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
781 s->rlayer.record_padding_cb = ctx->record_padding_cb;
782 s->rlayer.record_padding_arg = ctx->record_padding_arg;
783 s->rlayer.block_padding = ctx->block_padding;
784 s->sid_ctx_length = ctx->sid_ctx_length;
785 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
787 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
788 s->verify_callback = ctx->default_verify_callback;
789 s->generate_session_id = ctx->generate_session_id;
791 s->param = X509_VERIFY_PARAM_new();
792 if (s->param == NULL)
794 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
795 s->quiet_shutdown = ctx->quiet_shutdown;
797 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
798 s->max_send_fragment = ctx->max_send_fragment;
799 s->split_send_fragment = ctx->split_send_fragment;
800 s->max_pipelines = ctx->max_pipelines;
801 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
804 s->ext.debug_arg = NULL;
805 s->ext.ticket_expected = 0;
806 s->ext.status_type = ctx->ext.status_type;
807 s->ext.status_expected = 0;
808 s->ext.ocsp.ids = NULL;
809 s->ext.ocsp.exts = NULL;
810 s->ext.ocsp.resp = NULL;
811 s->ext.ocsp.resp_len = 0;
813 s->session_ctx = ctx;
814 if (ctx->ext.ecpointformats) {
815 s->ext.ecpointformats =
816 OPENSSL_memdup(ctx->ext.ecpointformats,
817 ctx->ext.ecpointformats_len);
818 if (!s->ext.ecpointformats) {
819 s->ext.ecpointformats_len = 0;
822 s->ext.ecpointformats_len =
823 ctx->ext.ecpointformats_len;
825 if (ctx->ext.supportedgroups) {
826 s->ext.supportedgroups =
827 OPENSSL_memdup(ctx->ext.supportedgroups,
828 ctx->ext.supportedgroups_len
829 * sizeof(*ctx->ext.supportedgroups));
830 if (!s->ext.supportedgroups) {
831 s->ext.supportedgroups_len = 0;
834 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
837 #ifndef OPENSSL_NO_NEXTPROTONEG
841 if (ctx->ext.alpn != NULL) {
842 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
843 if (s->ext.alpn == NULL) {
847 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
848 s->ext.alpn_len = ctx->ext.alpn_len;
851 s->verified_chain = NULL;
852 s->verify_result = X509_V_OK;
854 s->default_passwd_callback = ctx->default_passwd_callback;
855 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
857 s->key_update = SSL_KEY_UPDATE_NONE;
859 s->allow_early_data_cb = ctx->allow_early_data_cb;
860 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
862 if (!method->ssl_init(ssl))
865 s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
867 if (!method->ssl_reset(ssl))
870 #ifndef OPENSSL_NO_PSK
871 s->psk_client_callback = ctx->psk_client_callback;
872 s->psk_server_callback = ctx->psk_server_callback;
874 s->psk_find_session_cb = ctx->psk_find_session_cb;
875 s->psk_use_session_cb = ctx->psk_use_session_cb;
877 s->async_cb = ctx->async_cb;
878 s->async_cb_arg = ctx->async_cb_arg;
882 #ifndef OPENSSL_NO_COMP_ALG
883 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
886 #ifndef OPENSSL_NO_CT
887 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
888 ctx->ct_validation_callback_arg))
894 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
897 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
900 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
906 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
908 return ossl_ssl_connection_new_int(ctx, ctx->method);
911 int SSL_is_dtls(const SSL *s)
913 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
918 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
921 int SSL_up_ref(SSL *s)
925 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
928 REF_PRINT_COUNT("SSL", s);
929 REF_ASSERT_ISNT(i < 2);
930 return ((i > 1) ? 1 : 0);
933 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
934 unsigned int sid_ctx_len)
936 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
937 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
940 ctx->sid_ctx_length = sid_ctx_len;
941 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
946 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
947 unsigned int sid_ctx_len)
949 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
954 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
955 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
958 sc->sid_ctx_length = sid_ctx_len;
959 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
964 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
966 if (!CRYPTO_THREAD_write_lock(ctx->lock))
968 ctx->generate_session_id = cb;
969 CRYPTO_THREAD_unlock(ctx->lock);
973 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
975 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
977 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
979 sc->generate_session_id = cb;
980 CRYPTO_THREAD_unlock(ssl->lock);
984 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
988 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
989 * we can "construct" a session to give us the desired check - i.e. to
990 * find if there's a session in the hash table that would conflict with
991 * any new session built out of this id/id_len and the ssl_version in use
995 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
997 if (sc == NULL || id_len > sizeof(r.session_id))
1000 r.ssl_version = sc->version;
1001 r.session_id_length = id_len;
1002 memcpy(r.session_id, id, id_len);
1004 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1006 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1007 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1011 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1013 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1016 int SSL_set_purpose(SSL *s, int purpose)
1018 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1023 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1026 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1028 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1031 int SSL_set_trust(SSL *s, int trust)
1033 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1038 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1041 int SSL_set1_host(SSL *s, const char *hostname)
1043 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1048 /* If a hostname is provided and parses as an IP address,
1049 * treat it as such. */
1050 if (hostname != NULL
1051 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1054 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1057 int SSL_add1_host(SSL *s, const char *hostname)
1059 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1064 /* If a hostname is provided and parses as an IP address,
1065 * treat it as such. */
1068 ASN1_OCTET_STRING *ip;
1071 ip = a2i_IPADDRESS(hostname);
1073 /* We didn't want it; only to check if it *is* an IP address */
1074 ASN1_OCTET_STRING_free(ip);
1076 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1079 OPENSSL_free(old_ip);
1080 /* There can be only one IP address */
1084 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1088 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1091 void SSL_set_hostflags(SSL *s, unsigned int flags)
1093 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1098 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1101 const char *SSL_get0_peername(SSL *s)
1103 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1108 return X509_VERIFY_PARAM_get0_peername(sc->param);
1111 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1113 return dane_ctx_enable(&ctx->dane);
1116 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1118 unsigned long orig = ctx->dane.flags;
1120 ctx->dane.flags |= flags;
1124 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1126 unsigned long orig = ctx->dane.flags;
1128 ctx->dane.flags &= ~flags;
1132 int SSL_dane_enable(SSL *s, const char *basedomain)
1135 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1141 if (s->ctx->dane.mdmax == 0) {
1142 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1145 if (dane->trecs != NULL) {
1146 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1151 * Default SNI name. This rejects empty names, while set1_host below
1152 * accepts them and disables hostname checks. To avoid side-effects with
1153 * invalid input, set the SNI name first.
1155 if (sc->ext.hostname == NULL) {
1156 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1157 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1162 /* Primary RFC6125 reference identifier */
1163 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1164 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1170 dane->dctx = &s->ctx->dane;
1171 dane->trecs = sk_danetls_record_new_null();
1173 if (dane->trecs == NULL) {
1174 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1180 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1183 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1188 orig = sc->dane.flags;
1190 sc->dane.flags |= flags;
1194 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1197 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1202 orig = sc->dane.flags;
1204 sc->dane.flags &= ~flags;
1208 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1211 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1218 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1222 *mcert = dane->mcert;
1224 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1229 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1230 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1233 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1240 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1244 *usage = dane->mtlsa->usage;
1246 *selector = dane->mtlsa->selector;
1248 *mtype = dane->mtlsa->mtype;
1250 *data = dane->mtlsa->data;
1252 *dlen = dane->mtlsa->dlen;
1257 SSL_DANE *SSL_get0_dane(SSL *s)
1259 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1267 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1268 uint8_t mtype, const unsigned char *data, size_t dlen)
1270 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1275 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1278 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1281 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1284 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1286 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1289 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1291 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1296 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1299 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1304 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1306 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1314 void SSL_certs_clear(SSL *s)
1316 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1321 ssl_cert_clear_certs(sc->cert);
1324 void SSL_free(SSL *s)
1330 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1331 REF_PRINT_COUNT("SSL", s);
1334 REF_ASSERT_ISNT(i < 0);
1336 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1338 if (s->method != NULL)
1339 s->method->ssl_free(s);
1341 SSL_CTX_free(s->ctx);
1342 CRYPTO_THREAD_lock_free(s->lock);
1347 void ossl_ssl_connection_free(SSL *ssl)
1351 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1355 X509_VERIFY_PARAM_free(s->param);
1356 dane_final(&s->dane);
1358 /* Ignore return value */
1359 ssl_free_wbio_buffer(s);
1361 RECORD_LAYER_clear(&s->rlayer);
1363 BUF_MEM_free(s->init_buf);
1365 /* add extra stuff */
1366 sk_SSL_CIPHER_free(s->cipher_list);
1367 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1368 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1369 sk_SSL_CIPHER_free(s->peer_ciphers);
1371 /* Make the next call work :-) */
1372 if (s->session != NULL) {
1373 ssl_clear_bad_session(s);
1374 SSL_SESSION_free(s->session);
1376 SSL_SESSION_free(s->psksession);
1377 OPENSSL_free(s->psksession_id);
1379 ssl_cert_free(s->cert);
1380 OPENSSL_free(s->shared_sigalgs);
1381 /* Free up if allocated */
1383 OPENSSL_free(s->ext.hostname);
1384 SSL_CTX_free(s->session_ctx);
1385 OPENSSL_free(s->ext.ecpointformats);
1386 OPENSSL_free(s->ext.peer_ecpointformats);
1387 OPENSSL_free(s->ext.supportedgroups);
1388 OPENSSL_free(s->ext.peer_supportedgroups);
1389 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1390 #ifndef OPENSSL_NO_OCSP
1391 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1393 #ifndef OPENSSL_NO_CT
1394 SCT_LIST_free(s->scts);
1395 OPENSSL_free(s->ext.scts);
1397 OPENSSL_free(s->ext.ocsp.resp);
1398 OPENSSL_free(s->ext.alpn);
1399 OPENSSL_free(s->ext.tls13_cookie);
1400 if (s->clienthello != NULL)
1401 OPENSSL_free(s->clienthello->pre_proc_exts);
1402 OPENSSL_free(s->clienthello);
1403 OPENSSL_free(s->pha_context);
1404 EVP_MD_CTX_free(s->pha_dgst);
1406 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1407 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1409 OSSL_STACK_OF_X509_free(s->verified_chain);
1411 if (ssl->method != NULL)
1412 ssl->method->ssl_deinit(ssl);
1414 ASYNC_WAIT_CTX_free(s->waitctx);
1416 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1417 OPENSSL_free(s->ext.npn);
1420 #ifndef OPENSSL_NO_SRTP
1421 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1425 * We do this late. We want to ensure that any other references we held to
1426 * these BIOs are freed first *before* we call BIO_free_all(), because
1427 * BIO_free_all() will only free each BIO in the chain if the number of
1428 * references to the first BIO have dropped to 0
1430 BIO_free_all(s->wbio);
1432 BIO_free_all(s->rbio);
1436 void SSL_set0_rbio(SSL *s, BIO *rbio)
1438 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1439 #ifndef OPENSSL_NO_QUIC
1440 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1443 ossl_quic_conn_set0_net_rbio(qc, rbio);
1451 BIO_free_all(sc->rbio);
1453 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1456 void SSL_set0_wbio(SSL *s, BIO *wbio)
1458 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1459 #ifndef OPENSSL_NO_QUIC
1460 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1463 ossl_quic_conn_set0_net_wbio(qc, wbio);
1472 * If the output buffering BIO is still in place, remove it
1474 if (sc->bbio != NULL)
1475 sc->wbio = BIO_pop(sc->wbio);
1477 BIO_free_all(sc->wbio);
1480 /* Re-attach |bbio| to the new |wbio|. */
1481 if (sc->bbio != NULL)
1482 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1484 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1487 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1490 * For historical reasons, this function has many different cases in
1491 * ownership handling.
1494 /* If nothing has changed, do nothing */
1495 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1499 * If the two arguments are equal then one fewer reference is granted by the
1500 * caller than we want to take
1502 if (rbio != NULL && rbio == wbio)
1506 * If only the wbio is changed only adopt one reference.
1508 if (rbio == SSL_get_rbio(s)) {
1509 SSL_set0_wbio(s, wbio);
1513 * There is an asymmetry here for historical reasons. If only the rbio is
1514 * changed AND the rbio and wbio were originally different, then we only
1515 * adopt one reference.
1517 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1518 SSL_set0_rbio(s, rbio);
1522 /* Otherwise, adopt both references. */
1523 SSL_set0_rbio(s, rbio);
1524 SSL_set0_wbio(s, wbio);
1527 BIO *SSL_get_rbio(const SSL *s)
1529 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1530 #ifndef OPENSSL_NO_QUIC
1531 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1534 return ossl_quic_conn_get_net_rbio(qc);
1543 BIO *SSL_get_wbio(const SSL *s)
1545 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1546 #ifndef OPENSSL_NO_QUIC
1547 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1550 return ossl_quic_conn_get_net_rbio(qc);
1556 if (sc->bbio != NULL) {
1558 * If |bbio| is active, the true caller-configured BIO is its
1561 return BIO_next(sc->bbio);
1566 int SSL_get_fd(const SSL *s)
1568 return SSL_get_rfd(s);
1571 int SSL_get_rfd(const SSL *s)
1576 b = SSL_get_rbio(s);
1577 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1579 BIO_get_fd(r, &ret);
1583 int SSL_get_wfd(const SSL *s)
1588 b = SSL_get_wbio(s);
1589 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1591 BIO_get_fd(r, &ret);
1595 #ifndef OPENSSL_NO_SOCK
1596 int SSL_set_fd(SSL *s, int fd)
1601 bio = BIO_new(BIO_s_socket());
1604 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1607 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1608 SSL_set_bio(s, bio, bio);
1609 #ifndef OPENSSL_NO_KTLS
1611 * The new socket is created successfully regardless of ktls_enable.
1612 * ktls_enable doesn't change any functionality of the socket, except
1613 * changing the setsockopt to enable the processing of ktls_start.
1614 * Thus, it is not a problem to call it for non-TLS sockets.
1617 #endif /* OPENSSL_NO_KTLS */
1623 int SSL_set_wfd(SSL *s, int fd)
1625 BIO *rbio = SSL_get_rbio(s);
1627 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1628 || (int)BIO_get_fd(rbio, 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_wbio(s, bio);
1637 #ifndef OPENSSL_NO_KTLS
1639 * The new socket is created successfully regardless of ktls_enable.
1640 * ktls_enable doesn't change any functionality of the socket, except
1641 * changing the setsockopt to enable the processing of ktls_start.
1642 * Thus, it is not a problem to call it for non-TLS sockets.
1645 #endif /* OPENSSL_NO_KTLS */
1648 SSL_set0_wbio(s, rbio);
1653 int SSL_set_rfd(SSL *s, int fd)
1655 BIO *wbio = SSL_get_wbio(s);
1657 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1658 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1659 BIO *bio = BIO_new(BIO_s_socket());
1662 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1665 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1666 SSL_set0_rbio(s, bio);
1669 SSL_set0_rbio(s, wbio);
1676 /* return length of latest Finished message we sent, copy to 'buf' */
1677 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1680 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1685 ret = sc->s3.tmp.finish_md_len;
1688 memcpy(buf, sc->s3.tmp.finish_md, count);
1692 /* return length of latest Finished message we expected, copy to 'buf' */
1693 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1696 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1701 ret = sc->s3.tmp.peer_finish_md_len;
1704 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1708 int SSL_get_verify_mode(const SSL *s)
1710 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1715 return sc->verify_mode;
1718 int SSL_get_verify_depth(const SSL *s)
1720 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1725 return X509_VERIFY_PARAM_get_depth(sc->param);
1728 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1729 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1734 return sc->verify_callback;
1737 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1739 return ctx->verify_mode;
1742 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1744 return X509_VERIFY_PARAM_get_depth(ctx->param);
1747 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1748 return ctx->default_verify_callback;
1751 void SSL_set_verify(SSL *s, int mode,
1752 int (*callback) (int ok, X509_STORE_CTX *ctx))
1754 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1759 sc->verify_mode = mode;
1760 if (callback != NULL)
1761 sc->verify_callback = callback;
1764 void SSL_set_verify_depth(SSL *s, int depth)
1766 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1771 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1774 void SSL_set_read_ahead(SSL *s, int yes)
1776 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1777 OSSL_PARAM options[2], *opts = options;
1782 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1784 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1785 &sc->rlayer.read_ahead);
1786 *opts = OSSL_PARAM_construct_end();
1788 /* Ignore return value */
1789 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1792 int SSL_get_read_ahead(const SSL *s)
1794 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1799 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1802 int SSL_pending(const SSL *s)
1804 size_t pending = s->method->ssl_pending(s);
1807 * SSL_pending cannot work properly if read-ahead is enabled
1808 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1809 * impossible to fix since SSL_pending cannot report errors that may be
1810 * observed while scanning the new data. (Note that SSL_pending() is
1811 * often used as a boolean value, so we'd better not return -1.)
1813 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1814 * we just return INT_MAX.
1816 return pending < INT_MAX ? (int)pending : INT_MAX;
1819 int SSL_has_pending(const SSL *s)
1822 * Similar to SSL_pending() but returns a 1 to indicate that we have
1823 * processed or unprocessed data available or 0 otherwise (as opposed to the
1824 * number of bytes available). Unlike SSL_pending() this will take into
1825 * account read_ahead data. A 1 return simply indicates that we have data.
1826 * That data may not result in any application data, or we may fail to parse
1827 * the records for some reason.
1829 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1831 /* Check buffered app data if any first */
1832 if (SSL_CONNECTION_IS_DTLS(sc)) {
1836 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1837 while ((item = pqueue_next(&iter)) != NULL) {
1839 if (rdata->length > 0)
1844 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1847 return RECORD_LAYER_read_pending(&sc->rlayer);
1850 X509 *SSL_get1_peer_certificate(const SSL *s)
1852 X509 *r = SSL_get0_peer_certificate(s);
1860 X509 *SSL_get0_peer_certificate(const SSL *s)
1862 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1867 if (sc->session == NULL)
1870 return sc->session->peer;
1873 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1876 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1881 if (sc->session == NULL)
1884 r = sc->session->peer_chain;
1887 * If we are a client, cert_chain includes the peer's own certificate; if
1888 * we are a server, it does not.
1895 * Now in theory, since the calling process own 't' it should be safe to
1896 * modify. We need to be able to read f without being hassled
1898 int SSL_copy_session_id(SSL *t, const SSL *f)
1901 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1902 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1903 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1905 if (tsc == NULL || fsc == NULL)
1908 /* Do we need to do SSL locking? */
1909 if (!SSL_set_session(t, SSL_get_session(f))) {
1914 * what if we are setup for one protocol version but want to talk another
1916 if (t->method != f->method) {
1917 t->method->ssl_deinit(t);
1918 t->method = f->method;
1919 if (t->method->ssl_init(t) == 0)
1923 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1924 ssl_cert_free(tsc->cert);
1925 tsc->cert = fsc->cert;
1926 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1933 /* Fix this so it checks all the valid key/cert options */
1934 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1936 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1937 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1940 if (ctx->cert->key->privatekey == NULL) {
1941 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1944 return X509_check_private_key
1945 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1948 /* Fix this function so that it takes an optional type parameter */
1949 int SSL_check_private_key(const SSL *ssl)
1951 const SSL_CONNECTION *sc;
1953 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1954 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1957 if (sc->cert->key->x509 == NULL) {
1958 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1961 if (sc->cert->key->privatekey == NULL) {
1962 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1965 return X509_check_private_key(sc->cert->key->x509,
1966 sc->cert->key->privatekey);
1969 int SSL_waiting_for_async(SSL *s)
1971 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1982 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1984 ASYNC_WAIT_CTX *ctx;
1985 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1990 if ((ctx = sc->waitctx) == NULL)
1992 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1995 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1996 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1998 ASYNC_WAIT_CTX *ctx;
1999 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2004 if ((ctx = sc->waitctx) == NULL)
2006 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2010 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2012 ctx->async_cb = callback;
2016 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
2018 ctx->async_cb_arg = arg;
2022 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2024 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2029 sc->async_cb = callback;
2033 int SSL_set_async_callback_arg(SSL *s, void *arg)
2035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2040 sc->async_cb_arg = arg;
2044 int SSL_get_async_status(SSL *s, int *status)
2046 ASYNC_WAIT_CTX *ctx;
2047 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2052 if ((ctx = sc->waitctx) == NULL)
2054 *status = ASYNC_WAIT_CTX_get_status(ctx);
2058 int SSL_accept(SSL *s)
2060 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2061 #ifndef OPENSSL_NO_QUIC
2062 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2065 return s->method->ssl_accept(s);
2071 if (sc->handshake_func == NULL) {
2072 /* Not properly initialized yet */
2073 SSL_set_accept_state(s);
2076 return SSL_do_handshake(s);
2079 int SSL_connect(SSL *s)
2081 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2082 #ifndef OPENSSL_NO_QUIC
2083 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2086 return s->method->ssl_connect(s);
2092 if (sc->handshake_func == NULL) {
2093 /* Not properly initialized yet */
2094 SSL_set_connect_state(s);
2097 return SSL_do_handshake(s);
2100 long SSL_get_default_timeout(const SSL *s)
2102 return (long int)ossl_time2seconds(s->method->get_timeout());
2105 static int ssl_async_wait_ctx_cb(void *arg)
2107 SSL *s = (SSL *)arg;
2108 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2113 return sc->async_cb(s, sc->async_cb_arg);
2116 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2117 int (*func) (void *))
2120 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2125 if (sc->waitctx == NULL) {
2126 sc->waitctx = ASYNC_WAIT_CTX_new();
2127 if (sc->waitctx == NULL)
2129 if (sc->async_cb != NULL
2130 && !ASYNC_WAIT_CTX_set_callback
2131 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2135 sc->rwstate = SSL_NOTHING;
2136 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2137 sizeof(struct ssl_async_args))) {
2139 sc->rwstate = SSL_NOTHING;
2140 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2143 sc->rwstate = SSL_ASYNC_PAUSED;
2146 sc->rwstate = SSL_ASYNC_NO_JOBS;
2152 sc->rwstate = SSL_NOTHING;
2153 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2154 /* Shouldn't happen */
2159 static int ssl_io_intern(void *vargs)
2161 struct ssl_async_args *args;
2167 args = (struct ssl_async_args *)vargs;
2171 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2174 switch (args->type) {
2176 return args->f.func_read(s, buf, num, &sc->asyncrw);
2178 return args->f.func_write(s, buf, num, &sc->asyncrw);
2180 return args->f.func_other(s);
2185 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2187 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2188 #ifndef OPENSSL_NO_QUIC
2189 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2192 return s->method->ssl_read(s, buf, num, readbytes);
2198 if (sc->handshake_func == NULL) {
2199 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2203 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2204 sc->rwstate = SSL_NOTHING;
2208 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2209 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2210 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2214 * If we are a client and haven't received the ServerHello etc then we
2217 ossl_statem_check_finish_init(sc, 0);
2219 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2220 struct ssl_async_args args;
2226 args.type = READFUNC;
2227 args.f.func_read = s->method->ssl_read;
2229 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2230 *readbytes = sc->asyncrw;
2233 return s->method->ssl_read(s, buf, num, readbytes);
2237 int SSL_read(SSL *s, void *buf, int num)
2243 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2247 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2250 * The cast is safe here because ret should be <= INT_MAX because num is
2254 ret = (int)readbytes;
2259 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2261 int ret = ssl_read_internal(s, buf, num, readbytes);
2268 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2271 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2273 /* TODO(QUIC): This will need special handling for QUIC */
2278 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2279 return SSL_READ_EARLY_DATA_ERROR;
2282 switch (sc->early_data_state) {
2283 case SSL_EARLY_DATA_NONE:
2284 if (!SSL_in_before(s)) {
2285 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2286 return SSL_READ_EARLY_DATA_ERROR;
2290 case SSL_EARLY_DATA_ACCEPT_RETRY:
2291 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2292 ret = SSL_accept(s);
2295 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2296 return SSL_READ_EARLY_DATA_ERROR;
2300 case SSL_EARLY_DATA_READ_RETRY:
2301 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2302 sc->early_data_state = SSL_EARLY_DATA_READING;
2303 ret = SSL_read_ex(s, buf, num, readbytes);
2305 * State machine will update early_data_state to
2306 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2309 if (ret > 0 || (ret <= 0 && sc->early_data_state
2310 != SSL_EARLY_DATA_FINISHED_READING)) {
2311 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2312 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2313 : SSL_READ_EARLY_DATA_ERROR;
2316 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2319 return SSL_READ_EARLY_DATA_FINISH;
2322 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2323 return SSL_READ_EARLY_DATA_ERROR;
2327 int SSL_get_early_data_status(const SSL *s)
2329 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2331 /* TODO(QUIC): This will need special handling for QUIC */
2335 return sc->ext.early_data;
2338 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2340 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2341 #ifndef OPENSSL_NO_QUIC
2342 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2345 return s->method->ssl_peek(s, buf, num, readbytes);
2351 if (sc->handshake_func == NULL) {
2352 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2356 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2359 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2360 struct ssl_async_args args;
2366 args.type = READFUNC;
2367 args.f.func_read = s->method->ssl_peek;
2369 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2370 *readbytes = sc->asyncrw;
2373 return s->method->ssl_peek(s, buf, num, readbytes);
2377 int SSL_peek(SSL *s, void *buf, int num)
2383 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2387 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2390 * The cast is safe here because ret should be <= INT_MAX because num is
2394 ret = (int)readbytes;
2400 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2402 int ret = ssl_peek_internal(s, buf, num, readbytes);
2409 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2411 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2412 #ifndef OPENSSL_NO_QUIC
2413 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2416 return s->method->ssl_write(s, buf, num, written);
2422 if (sc->handshake_func == NULL) {
2423 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2427 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2428 sc->rwstate = SSL_NOTHING;
2429 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2433 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2434 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2435 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2436 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2439 /* If we are a client and haven't sent the Finished we better do that */
2440 ossl_statem_check_finish_init(sc, 1);
2442 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2444 struct ssl_async_args args;
2447 args.buf = (void *)buf;
2449 args.type = WRITEFUNC;
2450 args.f.func_write = s->method->ssl_write;
2452 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2453 *written = sc->asyncrw;
2456 return s->method->ssl_write(s, buf, num, written);
2460 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2463 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2468 if (sc->handshake_func == NULL) {
2469 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2473 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2474 sc->rwstate = SSL_NOTHING;
2475 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2479 if (!BIO_get_ktls_send(sc->wbio)) {
2480 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2484 /* If we have an alert to send, lets send it */
2485 if (sc->s3.alert_dispatch > 0) {
2486 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2488 /* SSLfatal() already called if appropriate */
2491 /* if it went, fall through and send more stuff */
2494 sc->rwstate = SSL_WRITING;
2495 if (BIO_flush(sc->wbio) <= 0) {
2496 if (!BIO_should_retry(sc->wbio)) {
2497 sc->rwstate = SSL_NOTHING;
2500 set_sys_error(EAGAIN);
2506 #ifdef OPENSSL_NO_KTLS
2507 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2508 "can't call ktls_sendfile(), ktls disabled");
2511 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2513 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2514 if ((get_last_sys_error() == EAGAIN) ||
2515 (get_last_sys_error() == EINTR) ||
2516 (get_last_sys_error() == EBUSY))
2517 BIO_set_retry_write(sc->wbio);
2520 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2523 sc->rwstate = SSL_NOTHING;
2528 int SSL_write(SSL *s, const void *buf, int num)
2534 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2538 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2541 * The cast is safe here because ret should be <= INT_MAX because num is
2550 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2552 int ret = ssl_write_internal(s, buf, num, written);
2559 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2561 int ret, early_data_state;
2563 uint32_t partialwrite;
2564 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2566 /* TODO(QUIC): This will need special handling for QUIC */
2570 switch (sc->early_data_state) {
2571 case SSL_EARLY_DATA_NONE:
2573 || !SSL_in_before(s)
2574 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2575 && (sc->psk_use_session_cb == NULL))) {
2576 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2581 case SSL_EARLY_DATA_CONNECT_RETRY:
2582 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2583 ret = SSL_connect(s);
2586 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2591 case SSL_EARLY_DATA_WRITE_RETRY:
2592 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2594 * We disable partial write for early data because we don't keep track
2595 * of how many bytes we've written between the SSL_write_ex() call and
2596 * the flush if the flush needs to be retried)
2598 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2599 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2600 ret = SSL_write_ex(s, buf, num, &writtmp);
2601 sc->mode |= partialwrite;
2603 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2606 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2609 case SSL_EARLY_DATA_WRITE_FLUSH:
2610 /* The buffering BIO is still in place so we need to flush it */
2611 if (statem_flush(sc) != 1)
2614 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2617 case SSL_EARLY_DATA_FINISHED_READING:
2618 case SSL_EARLY_DATA_READ_RETRY:
2619 early_data_state = sc->early_data_state;
2620 /* We are a server writing to an unauthenticated client */
2621 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2622 ret = SSL_write_ex(s, buf, num, written);
2623 /* The buffering BIO is still in place */
2625 (void)BIO_flush(sc->wbio);
2626 sc->early_data_state = early_data_state;
2630 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2635 int SSL_shutdown(SSL *s)
2638 * Note that this function behaves differently from what one might
2639 * expect. Return values are 0 for no success (yet), 1 for success; but
2640 * calling it once is usually not enough, even if blocking I/O is used
2641 * (see ssl3_shutdown).
2643 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2644 #ifndef OPENSSL_NO_QUIC
2645 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2648 return ossl_quic_conn_shutdown(qc, 0, NULL, 0);
2654 if (sc->handshake_func == NULL) {
2655 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2659 if (!SSL_in_init(s)) {
2660 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2661 struct ssl_async_args args;
2663 memset(&args, 0, sizeof(args));
2665 args.type = OTHERFUNC;
2666 args.f.func_other = s->method->ssl_shutdown;
2668 return ssl_start_async_job(s, &args, ssl_io_intern);
2670 return s->method->ssl_shutdown(s);
2673 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2678 int SSL_key_update(SSL *s, int updatetype)
2680 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2685 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2686 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2690 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2691 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2692 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2696 if (!SSL_is_init_finished(s)) {
2697 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2701 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2702 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2706 ossl_statem_set_in_init(sc, 1);
2707 sc->key_update = updatetype;
2711 int SSL_get_key_update_type(const SSL *s)
2713 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2718 return sc->key_update;
2722 * Can we accept a renegotiation request? If yes, set the flag and
2723 * return 1 if yes. If not, raise error and return 0.
2725 static int can_renegotiate(const SSL_CONNECTION *sc)
2727 if (SSL_CONNECTION_IS_TLS13(sc)) {
2728 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2732 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2733 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2740 int SSL_renegotiate(SSL *s)
2742 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2747 if (!can_renegotiate(sc))
2750 sc->renegotiate = 1;
2751 sc->new_session = 1;
2752 return s->method->ssl_renegotiate(s);
2755 int SSL_renegotiate_abbreviated(SSL *s)
2757 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2762 if (!can_renegotiate(sc))
2765 sc->renegotiate = 1;
2766 sc->new_session = 0;
2767 return s->method->ssl_renegotiate(s);
2770 int SSL_renegotiate_pending(const SSL *s)
2772 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2778 * becomes true when negotiation is requested; false again once a
2779 * handshake has finished
2781 return (sc->renegotiate != 0);
2784 int SSL_new_session_ticket(SSL *s)
2786 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2791 /* If we are in init because we're sending tickets, okay to send more. */
2792 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2793 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2794 || !SSL_CONNECTION_IS_TLS13(sc))
2796 sc->ext.extra_tickets_expected++;
2797 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2798 ossl_statem_set_in_init(sc, 1);
2802 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2805 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2807 /* TODO(QUIC): Special handling for some ctrls will be needed */
2812 case SSL_CTRL_GET_READ_AHEAD:
2813 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2814 case SSL_CTRL_SET_READ_AHEAD:
2815 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2816 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2819 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2820 sc->msg_callback_arg = parg;
2825 OSSL_PARAM options[2], *opts = options;
2829 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2831 *opts = OSSL_PARAM_construct_end();
2833 /* Ignore return value */
2834 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2838 case SSL_CTRL_CLEAR_MODE:
2839 return (sc->mode &= ~larg);
2840 case SSL_CTRL_GET_MAX_CERT_LIST:
2841 return (long)sc->max_cert_list;
2842 case SSL_CTRL_SET_MAX_CERT_LIST:
2845 l = (long)sc->max_cert_list;
2846 sc->max_cert_list = (size_t)larg;
2848 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2849 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2851 #ifndef OPENSSL_NO_KTLS
2852 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2854 #endif /* OPENSSL_NO_KTLS */
2855 sc->max_send_fragment = larg;
2856 if (sc->max_send_fragment < sc->split_send_fragment)
2857 sc->split_send_fragment = sc->max_send_fragment;
2858 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2860 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2861 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2863 sc->split_send_fragment = larg;
2865 case SSL_CTRL_SET_MAX_PIPELINES:
2866 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2868 sc->max_pipelines = larg;
2869 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2870 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2872 case SSL_CTRL_GET_RI_SUPPORT:
2873 return sc->s3.send_connection_binding;
2874 case SSL_CTRL_SET_RETRY_VERIFY:
2875 sc->rwstate = SSL_RETRY_VERIFY;
2877 case SSL_CTRL_CERT_FLAGS:
2878 return (sc->cert->cert_flags |= larg);
2879 case SSL_CTRL_CLEAR_CERT_FLAGS:
2880 return (sc->cert->cert_flags &= ~larg);
2882 case SSL_CTRL_GET_RAW_CIPHERLIST:
2884 if (sc->s3.tmp.ciphers_raw == NULL)
2886 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2887 return (int)sc->s3.tmp.ciphers_rawlen;
2889 return TLS_CIPHER_LEN;
2891 case SSL_CTRL_GET_EXTMS_SUPPORT:
2892 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2894 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2898 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2899 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2900 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2901 &sc->min_proto_version);
2902 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2903 return sc->min_proto_version;
2904 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2905 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2906 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2907 &sc->max_proto_version);
2908 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2909 return sc->max_proto_version;
2911 return s->method->ssl_ctrl(s, cmd, larg, parg);
2915 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2917 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2923 case SSL_CTRL_SET_MSG_CALLBACK:
2924 sc->msg_callback = (void (*)
2925 (int write_p, int version, int content_type,
2926 const void *buf, size_t len, SSL *ssl,
2931 return s->method->ssl_callback_ctrl(s, cmd, fp);
2935 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2937 return ctx->sessions;
2940 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2944 if (ssl_tsan_lock(ctx)) {
2945 res = tsan_load(stat);
2946 ssl_tsan_unlock(ctx);
2951 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2954 /* For some cases with ctx == NULL perform syntax checks */
2957 case SSL_CTRL_SET_GROUPS_LIST:
2958 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2959 case SSL_CTRL_SET_SIGALGS_LIST:
2960 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2961 return tls1_set_sigalgs_list(NULL, parg, 0);
2968 case SSL_CTRL_GET_READ_AHEAD:
2969 return ctx->read_ahead;
2970 case SSL_CTRL_SET_READ_AHEAD:
2971 l = ctx->read_ahead;
2972 ctx->read_ahead = larg;
2975 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2976 ctx->msg_callback_arg = parg;
2979 case SSL_CTRL_GET_MAX_CERT_LIST:
2980 return (long)ctx->max_cert_list;
2981 case SSL_CTRL_SET_MAX_CERT_LIST:
2984 l = (long)ctx->max_cert_list;
2985 ctx->max_cert_list = (size_t)larg;
2988 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2991 l = (long)ctx->session_cache_size;
2992 ctx->session_cache_size = (size_t)larg;
2994 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2995 return (long)ctx->session_cache_size;
2996 case SSL_CTRL_SET_SESS_CACHE_MODE:
2997 l = ctx->session_cache_mode;
2998 ctx->session_cache_mode = larg;
3000 case SSL_CTRL_GET_SESS_CACHE_MODE:
3001 return ctx->session_cache_mode;
3003 case SSL_CTRL_SESS_NUMBER:
3004 return lh_SSL_SESSION_num_items(ctx->sessions);
3005 case SSL_CTRL_SESS_CONNECT:
3006 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
3007 case SSL_CTRL_SESS_CONNECT_GOOD:
3008 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
3009 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3010 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3011 case SSL_CTRL_SESS_ACCEPT:
3012 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3013 case SSL_CTRL_SESS_ACCEPT_GOOD:
3014 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3015 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3016 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3017 case SSL_CTRL_SESS_HIT:
3018 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3019 case SSL_CTRL_SESS_CB_HIT:
3020 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3021 case SSL_CTRL_SESS_MISSES:
3022 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3023 case SSL_CTRL_SESS_TIMEOUTS:
3024 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3025 case SSL_CTRL_SESS_CACHE_FULL:
3026 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3028 return (ctx->mode |= larg);
3029 case SSL_CTRL_CLEAR_MODE:
3030 return (ctx->mode &= ~larg);
3031 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3032 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
3034 ctx->max_send_fragment = larg;
3035 if (ctx->max_send_fragment < ctx->split_send_fragment)
3036 ctx->split_send_fragment = ctx->max_send_fragment;
3038 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3039 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
3041 ctx->split_send_fragment = larg;
3043 case SSL_CTRL_SET_MAX_PIPELINES:
3044 if (larg < 1 || larg > SSL_MAX_PIPELINES)
3046 ctx->max_pipelines = larg;
3048 case SSL_CTRL_CERT_FLAGS:
3049 return (ctx->cert->cert_flags |= larg);
3050 case SSL_CTRL_CLEAR_CERT_FLAGS:
3051 return (ctx->cert->cert_flags &= ~larg);
3052 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3053 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3054 && ssl_set_version_bound(ctx->method->version, (int)larg,
3055 &ctx->min_proto_version);
3056 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3057 return ctx->min_proto_version;
3058 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3059 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3060 && ssl_set_version_bound(ctx->method->version, (int)larg,
3061 &ctx->max_proto_version);
3062 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3063 return ctx->max_proto_version;
3065 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3069 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3072 case SSL_CTRL_SET_MSG_CALLBACK:
3073 ctx->msg_callback = (void (*)
3074 (int write_p, int version, int content_type,
3075 const void *buf, size_t len, SSL *ssl,
3080 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3084 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3093 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3094 const SSL_CIPHER *const *bp)
3096 if ((*ap)->id > (*bp)->id)
3098 if ((*ap)->id < (*bp)->id)
3104 * return a STACK of the ciphers available for the SSL and in order of
3107 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3109 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3112 if (sc->cipher_list != NULL) {
3113 return sc->cipher_list;
3114 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3115 return s->ctx->cipher_list;
3121 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3123 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3125 if (sc == NULL || !sc->server)
3127 return sc->peer_ciphers;
3130 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3132 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3134 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3139 ciphers = SSL_get_ciphers(s);
3142 if (!ssl_set_client_disabled(sc))
3144 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3145 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3146 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3148 sk = sk_SSL_CIPHER_new_null();
3151 if (!sk_SSL_CIPHER_push(sk, c)) {
3152 sk_SSL_CIPHER_free(sk);
3160 /** return a STACK of the ciphers available for the SSL and in order of
3162 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3165 if (s->cipher_list_by_id != NULL)
3166 return s->cipher_list_by_id;
3167 else if (s->ssl.ctx != NULL
3168 && s->ssl.ctx->cipher_list_by_id != NULL)
3169 return s->ssl.ctx->cipher_list_by_id;
3174 /** The old interface to get the same thing as SSL_get_ciphers() */
3175 const char *SSL_get_cipher_list(const SSL *s, int n)
3177 const SSL_CIPHER *c;
3178 STACK_OF(SSL_CIPHER) *sk;
3182 sk = SSL_get_ciphers(s);
3183 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3185 c = sk_SSL_CIPHER_value(sk, n);
3191 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3193 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3196 return ctx->cipher_list;
3201 * Distinguish between ciphers controlled by set_ciphersuite() and
3202 * set_cipher_list() when counting.
3204 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3207 const SSL_CIPHER *c;
3211 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3212 c = sk_SSL_CIPHER_value(sk, i);
3213 if (c->min_tls >= TLS1_3_VERSION)
3220 /** specify the ciphers to be used by default by the SSL_CTX */
3221 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3223 STACK_OF(SSL_CIPHER) *sk;
3225 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3226 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3229 * ssl_create_cipher_list may return an empty stack if it was unable to
3230 * find a cipher matching the given rule string (for example if the rule
3231 * string specifies a cipher which has been disabled). This is not an
3232 * error as far as ssl_create_cipher_list is concerned, and hence
3233 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3237 else if (cipher_list_tls12_num(sk) == 0) {
3238 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3244 /** specify the ciphers to be used by the SSL */
3245 int SSL_set_cipher_list(SSL *s, const char *str)
3247 STACK_OF(SSL_CIPHER) *sk;
3248 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3253 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3254 &sc->cipher_list, &sc->cipher_list_by_id, str,
3256 /* see comment in SSL_CTX_set_cipher_list */
3259 else if (cipher_list_tls12_num(sk) == 0) {
3260 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3266 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3269 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3270 const SSL_CIPHER *c;
3272 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3278 || sc->peer_ciphers == NULL
3283 clntsk = sc->peer_ciphers;
3284 srvrsk = SSL_get_ciphers(s);
3285 if (clntsk == NULL || srvrsk == NULL)
3288 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3291 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3294 c = sk_SSL_CIPHER_value(clntsk, i);
3295 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3298 n = strlen(c->name);
3315 * Return the requested servername (SNI) value. Note that the behaviour varies
3317 * - whether this is called by the client or the server,
3318 * - if we are before or during/after the handshake,
3319 * - if a resumption or normal handshake is being attempted/has occurred
3320 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3322 * Note that only the host_name type is defined (RFC 3546).
3324 const char *SSL_get_servername(const SSL *s, const int type)
3326 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3333 * If we don't know if we are the client or the server yet then we assume
3336 server = sc->handshake_func == NULL ? 0 : sc->server;
3338 if (type != TLSEXT_NAMETYPE_host_name)
3344 * In TLSv1.3 on the server SNI is not associated with the session
3345 * but in TLSv1.2 or below it is.
3347 * Before the handshake:
3350 * During/after the handshake (TLSv1.2 or below resumption occurred):
3351 * - If a servername was accepted by the server in the original
3352 * handshake then it will return that servername, or NULL otherwise.
3354 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3355 * - The function will return the servername requested by the client in
3356 * this handshake or NULL if none was requested.
3358 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3359 return sc->session->ext.hostname;
3364 * Before the handshake:
3365 * - If a servername has been set via a call to
3366 * SSL_set_tlsext_host_name() then it will return that servername
3367 * - If one has not been set, but a TLSv1.2 resumption is being
3368 * attempted and the session from the original handshake had a
3369 * servername accepted by the server then it will return that
3371 * - Otherwise it returns NULL
3373 * During/after the handshake (TLSv1.2 or below resumption occurred):
3374 * - If the session from the original handshake had a servername accepted
3375 * by the server then it will return that servername.
3376 * - Otherwise it returns the servername set via
3377 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3379 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3380 * - It will return the servername set via SSL_set_tlsext_host_name()
3381 * (or NULL if it was not called).
3383 if (SSL_in_before(s)) {
3384 if (sc->ext.hostname == NULL
3385 && sc->session != NULL
3386 && sc->session->ssl_version != TLS1_3_VERSION)
3387 return sc->session->ext.hostname;
3389 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3390 && sc->session->ext.hostname != NULL)
3391 return sc->session->ext.hostname;
3395 return sc->ext.hostname;
3398 int SSL_get_servername_type(const SSL *s)
3400 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3401 return TLSEXT_NAMETYPE_host_name;
3406 * SSL_select_next_proto implements the standard protocol selection. It is
3407 * expected that this function is called from the callback set by
3408 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3409 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3410 * not included in the length. A byte string of length 0 is invalid. No byte
3411 * string may be truncated. The current, but experimental algorithm for
3412 * selecting the protocol is: 1) If the server doesn't support NPN then this
3413 * is indicated to the callback. In this case, the client application has to
3414 * abort the connection or have a default application level protocol. 2) If
3415 * the server supports NPN, but advertises an empty list then the client
3416 * selects the first protocol in its list, but indicates via the API that this
3417 * fallback case was enacted. 3) Otherwise, the client finds the first
3418 * protocol in the server's list that it supports and selects this protocol.
3419 * This is because it's assumed that the server has better information about
3420 * which protocol a client should use. 4) If the client doesn't support any
3421 * of the server's advertised protocols, then this is treated the same as
3422 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3423 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3425 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3426 const unsigned char *server,
3427 unsigned int server_len,
3428 const unsigned char *client, unsigned int client_len)
3431 const unsigned char *result;
3432 int status = OPENSSL_NPN_UNSUPPORTED;
3435 * For each protocol in server preference order, see if we support it.
3437 for (i = 0; i < server_len;) {
3438 for (j = 0; j < client_len;) {
3439 if (server[i] == client[j] &&
3440 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3441 /* We found a match */
3442 result = &server[i];
3443 status = OPENSSL_NPN_NEGOTIATED;
3453 /* There's no overlap between our protocols and the server's list. */
3455 status = OPENSSL_NPN_NO_OVERLAP;
3458 *out = (unsigned char *)result + 1;
3459 *outlen = result[0];
3463 #ifndef OPENSSL_NO_NEXTPROTONEG
3465 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3466 * client's requested protocol for this connection and returns 0. If the
3467 * client didn't request any protocol, then *data is set to NULL. Note that
3468 * the client can request any protocol it chooses. The value returned from
3469 * this function need not be a member of the list of supported protocols
3470 * provided by the callback.
3472 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3475 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3478 /* We have no other way to indicate error */
3484 *data = sc->ext.npn;
3485 if (*data == NULL) {
3488 *len = (unsigned int)sc->ext.npn_len;
3493 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3494 * a TLS server needs a list of supported protocols for Next Protocol
3495 * Negotiation. The returned list must be in wire format. The list is
3496 * returned by setting |out| to point to it and |outlen| to its length. This
3497 * memory will not be modified, but one should assume that the SSL* keeps a
3498 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3499 * wishes to advertise. Otherwise, no such extension will be included in the
3502 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3503 SSL_CTX_npn_advertised_cb_func cb,
3506 ctx->ext.npn_advertised_cb = cb;
3507 ctx->ext.npn_advertised_cb_arg = arg;
3511 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3512 * client needs to select a protocol from the server's provided list. |out|
3513 * must be set to point to the selected protocol (which may be within |in|).
3514 * The length of the protocol name must be written into |outlen|. The
3515 * server's advertised protocols are provided in |in| and |inlen|. The
3516 * callback can assume that |in| is syntactically valid. The client must
3517 * select a protocol. It is fatal to the connection if this callback returns
3518 * a value other than SSL_TLSEXT_ERR_OK.
3520 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3521 SSL_CTX_npn_select_cb_func cb,
3524 ctx->ext.npn_select_cb = cb;
3525 ctx->ext.npn_select_cb_arg = arg;
3529 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3533 if (protos_len < 2 || protos == NULL)
3536 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3537 if (protos[idx] == 0)
3540 return idx == protos_len;
3543 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3544 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3545 * length-prefixed strings). Returns 0 on success.
3547 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3548 unsigned int protos_len)
3550 unsigned char *alpn;
3552 if (protos_len == 0 || protos == NULL) {
3553 OPENSSL_free(ctx->ext.alpn);
3554 ctx->ext.alpn = NULL;
3555 ctx->ext.alpn_len = 0;
3558 /* Not valid per RFC */
3559 if (!alpn_value_ok(protos, protos_len))
3562 alpn = OPENSSL_memdup(protos, protos_len);
3565 OPENSSL_free(ctx->ext.alpn);
3566 ctx->ext.alpn = alpn;
3567 ctx->ext.alpn_len = protos_len;
3573 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3574 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3575 * length-prefixed strings). Returns 0 on success.
3577 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3578 unsigned int protos_len)
3580 unsigned char *alpn;
3581 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3586 if (protos_len == 0 || protos == NULL) {
3587 OPENSSL_free(sc->ext.alpn);
3588 sc->ext.alpn = NULL;
3589 sc->ext.alpn_len = 0;
3592 /* Not valid per RFC */
3593 if (!alpn_value_ok(protos, protos_len))
3596 alpn = OPENSSL_memdup(protos, protos_len);
3599 OPENSSL_free(sc->ext.alpn);
3600 sc->ext.alpn = alpn;
3601 sc->ext.alpn_len = protos_len;
3607 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3608 * called during ClientHello processing in order to select an ALPN protocol
3609 * from the client's list of offered protocols.
3611 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3612 SSL_CTX_alpn_select_cb_func cb,
3615 ctx->ext.alpn_select_cb = cb;
3616 ctx->ext.alpn_select_cb_arg = arg;
3620 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3621 * On return it sets |*data| to point to |*len| bytes of protocol name
3622 * (not including the leading length-prefix byte). If the server didn't
3623 * respond with a negotiated protocol then |*len| will be zero.
3625 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3628 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3631 /* We have no other way to indicate error */
3637 *data = sc->s3.alpn_selected;
3641 *len = (unsigned int)sc->s3.alpn_selected_len;
3644 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3645 const char *label, size_t llen,
3646 const unsigned char *context, size_t contextlen,
3649 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3654 if (sc->session == NULL
3655 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3658 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3660 contextlen, use_context);
3663 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3664 const char *label, size_t llen,
3665 const unsigned char *context,
3668 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3673 if (sc->version != TLS1_3_VERSION)
3676 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3677 context, contextlen);
3680 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3682 const unsigned char *session_id = a->session_id;
3684 unsigned char tmp_storage[4];
3686 if (a->session_id_length < sizeof(tmp_storage)) {
3687 memset(tmp_storage, 0, sizeof(tmp_storage));
3688 memcpy(tmp_storage, a->session_id, a->session_id_length);
3689 session_id = tmp_storage;
3693 ((unsigned long)session_id[0]) |
3694 ((unsigned long)session_id[1] << 8L) |
3695 ((unsigned long)session_id[2] << 16L) |
3696 ((unsigned long)session_id[3] << 24L);
3701 * NB: If this function (or indeed the hash function which uses a sort of
3702 * coarser function than this one) is changed, ensure
3703 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3704 * being able to construct an SSL_SESSION that will collide with any existing
3705 * session with a matching session ID.
3707 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3709 if (a->ssl_version != b->ssl_version)
3711 if (a->session_id_length != b->session_id_length)
3713 return memcmp(a->session_id, b->session_id, a->session_id_length);
3717 * These wrapper functions should remain rather than redeclaring
3718 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3719 * variable. The reason is that the functions aren't static, they're exposed
3723 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3724 const SSL_METHOD *meth)
3726 SSL_CTX *ret = NULL;
3727 #ifndef OPENSSL_NO_COMP_ALG
3732 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3736 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3739 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3740 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3743 ret = OPENSSL_zalloc(sizeof(*ret));
3747 /* Init the reference counting before any call to SSL_CTX_free */
3748 ret->references = 1;
3749 ret->lock = CRYPTO_THREAD_lock_new();
3750 if (ret->lock == NULL) {
3751 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3755 #ifdef TSAN_REQUIRES_LOCKING
3756 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3757 if (ret->tsan_lock == NULL) {
3758 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3763 ret->libctx = libctx;
3764 if (propq != NULL) {
3765 ret->propq = OPENSSL_strdup(propq);
3766 if (ret->propq == NULL)
3771 ret->min_proto_version = 0;
3772 ret->max_proto_version = 0;
3773 ret->mode = SSL_MODE_AUTO_RETRY;
3774 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3775 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3776 /* We take the system default. */
3777 ret->session_timeout = meth->get_timeout();
3778 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3779 ret->verify_mode = SSL_VERIFY_NONE;
3780 if ((ret->cert = ssl_cert_new()) == NULL) {
3781 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3785 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3786 if (ret->sessions == NULL) {
3787 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3790 ret->cert_store = X509_STORE_new();
3791 if (ret->cert_store == NULL) {
3792 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3795 #ifndef OPENSSL_NO_CT
3796 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3797 if (ret->ctlog_store == NULL) {
3798 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3803 /* initialize cipher/digest methods table */
3804 if (!ssl_load_ciphers(ret))
3806 /* initialise sig algs */
3807 if (!ssl_setup_sig_algs(ret))
3810 if (!ssl_load_groups(ret))
3813 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3814 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3818 if (!ssl_create_cipher_list(ret,
3819 ret->tls13_ciphersuites,
3820 &ret->cipher_list, &ret->cipher_list_by_id,
3821 OSSL_default_cipher_list(), ret->cert)
3822 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3823 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3827 ret->param = X509_VERIFY_PARAM_new();
3828 if (ret->param == NULL) {
3829 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3834 * If these aren't available from the provider we'll get NULL returns.
3835 * That's fine but will cause errors later if SSLv3 is negotiated
3837 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3838 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3840 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3841 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3845 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3846 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3850 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3851 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3855 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3858 /* No compression for DTLS */
3859 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3860 ret->comp_methods = SSL_COMP_get_compression_methods();
3862 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3863 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3865 /* Setup RFC5077 ticket keys */
3866 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3867 sizeof(ret->ext.tick_key_name), 0) <= 0)
3868 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3869 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3870 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3871 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3872 ret->options |= SSL_OP_NO_TICKET;
3874 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3875 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3876 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3880 #ifndef OPENSSL_NO_SRP
3881 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3882 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3886 #ifndef OPENSSL_NO_ENGINE
3887 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3888 # define eng_strx(x) #x
3889 # define eng_str(x) eng_strx(x)
3890 /* Use specific client engine automatically... ignore errors */
3893 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3896 ENGINE_load_builtin_engines();
3897 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3899 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3905 #ifndef OPENSSL_NO_COMP_ALG
3907 * Set the default order: brotli, zlib, zstd
3908 * Including only those enabled algorithms
3910 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3912 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3913 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3914 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3915 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3916 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3917 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3920 * Disable compression by default to prevent CRIME. Applications can
3921 * re-enable compression by configuring
3922 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3923 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3924 * middlebox compatibility by default. This may be disabled by default in
3925 * a later OpenSSL version.
3927 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3929 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3932 * We cannot usefully set a default max_early_data here (which gets
3933 * propagated in SSL_new(), for the following reason: setting the
3934 * SSL field causes tls_construct_stoc_early_data() to tell the
3935 * client that early data will be accepted when constructing a TLS 1.3
3936 * session ticket, and the client will accordingly send us early data
3937 * when using that ticket (if the client has early data to send).
3938 * However, in order for the early data to actually be consumed by
3939 * the application, the application must also have calls to
3940 * SSL_read_early_data(); otherwise we'll just skip past the early data
3941 * and ignore it. So, since the application must add calls to
3942 * SSL_read_early_data(), we also require them to add
3943 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3944 * eliminating the bandwidth-wasting early data in the case described
3947 ret->max_early_data = 0;
3950 * Default recv_max_early_data is a fully loaded single record. Could be
3951 * split across multiple records in practice. We set this differently to
3952 * max_early_data so that, in the default case, we do not advertise any
3953 * support for early_data, but if a client were to send us some (e.g.
3954 * because of an old, stale ticket) then we will tolerate it and skip over
3957 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3959 /* By default we send two session tickets automatically in TLSv1.3 */
3960 ret->num_tickets = 2;
3962 ssl_ctx_system_config(ret);
3970 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3972 return SSL_CTX_new_ex(NULL, NULL, meth);
3975 int SSL_CTX_up_ref(SSL_CTX *ctx)
3979 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3982 REF_PRINT_COUNT("SSL_CTX", ctx);
3983 REF_ASSERT_ISNT(i < 2);
3984 return ((i > 1) ? 1 : 0);
3987 void SSL_CTX_free(SSL_CTX *a)
3995 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3996 REF_PRINT_COUNT("SSL_CTX", a);
3999 REF_ASSERT_ISNT(i < 0);
4001 X509_VERIFY_PARAM_free(a->param);
4002 dane_ctx_final(&a->dane);
4005 * Free internal session cache. However: the remove_cb() may reference
4006 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
4007 * after the sessions were flushed.
4008 * As the ex_data handling routines might also touch the session cache,
4009 * the most secure solution seems to be: empty (flush) the cache, then
4010 * free ex_data, then finally free the cache.
4011 * (See ticket [openssl.org #212].)
4013 if (a->sessions != NULL)
4014 SSL_CTX_flush_sessions(a, 0);
4016 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4017 lh_SSL_SESSION_free(a->sessions);
4018 X509_STORE_free(a->cert_store);
4019 #ifndef OPENSSL_NO_CT
4020 CTLOG_STORE_free(a->ctlog_store);
4022 sk_SSL_CIPHER_free(a->cipher_list);
4023 sk_SSL_CIPHER_free(a->cipher_list_by_id);
4024 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4025 ssl_cert_free(a->cert);
4026 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4027 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4028 OSSL_STACK_OF_X509_free(a->extra_certs);
4029 a->comp_methods = NULL;
4030 #ifndef OPENSSL_NO_SRTP
4031 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4033 #ifndef OPENSSL_NO_SRP
4034 ssl_ctx_srp_ctx_free_intern(a);
4036 #ifndef OPENSSL_NO_ENGINE
4037 tls_engine_finish(a->client_cert_engine);
4040 OPENSSL_free(a->ext.ecpointformats);
4041 OPENSSL_free(a->ext.supportedgroups);
4042 OPENSSL_free(a->ext.supported_groups_default);
4043 OPENSSL_free(a->ext.alpn);
4044 OPENSSL_secure_free(a->ext.secure);
4046 ssl_evp_md_free(a->md5);
4047 ssl_evp_md_free(a->sha1);
4049 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4050 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4051 for (j = 0; j < SSL_MD_NUM_IDX; j++)
4052 ssl_evp_md_free(a->ssl_digest_methods[j]);
4053 for (j = 0; j < a->group_list_len; j++) {
4054 OPENSSL_free(a->group_list[j].tlsname);
4055 OPENSSL_free(a->group_list[j].realname);
4056 OPENSSL_free(a->group_list[j].algorithm);
4058 OPENSSL_free(a->group_list);
4060 OPENSSL_free(a->sigalg_lookup_cache);
4062 CRYPTO_THREAD_lock_free(a->lock);
4063 #ifdef TSAN_REQUIRES_LOCKING
4064 CRYPTO_THREAD_lock_free(a->tsan_lock);
4067 OPENSSL_free(a->propq);
4072 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4074 ctx->default_passwd_callback = cb;
4077 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4079 ctx->default_passwd_callback_userdata = u;
4082 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4084 return ctx->default_passwd_callback;
4087 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4089 return ctx->default_passwd_callback_userdata;
4092 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4094 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4099 sc->default_passwd_callback = cb;
4102 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4104 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4109 sc->default_passwd_callback_userdata = u;
4112 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4114 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4119 return sc->default_passwd_callback;
4122 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4124 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4129 return sc->default_passwd_callback_userdata;
4132 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4133 int (*cb) (X509_STORE_CTX *, void *),
4136 ctx->app_verify_callback = cb;
4137 ctx->app_verify_arg = arg;
4140 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4141 int (*cb) (int, X509_STORE_CTX *))
4143 ctx->verify_mode = mode;
4144 ctx->default_verify_callback = cb;
4147 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4149 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4152 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4154 ssl_cert_set_cert_cb(c->cert, cb, arg);
4157 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4159 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4164 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4167 void ssl_set_masks(SSL_CONNECTION *s)
4170 uint32_t *pvalid = s->s3.tmp.valid_flags;
4171 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4172 unsigned long mask_k, mask_a;
4173 int have_ecc_cert, ecdsa_ok;
4178 dh_tmp = (c->dh_tmp != NULL
4179 || c->dh_tmp_cb != NULL
4182 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4183 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4184 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4185 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4189 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4190 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4192 #ifndef OPENSSL_NO_GOST
4193 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4194 mask_k |= SSL_kGOST | SSL_kGOST18;
4195 mask_a |= SSL_aGOST12;
4197 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4198 mask_k |= SSL_kGOST | SSL_kGOST18;
4199 mask_a |= SSL_aGOST12;
4201 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4202 mask_k |= SSL_kGOST;
4203 mask_a |= SSL_aGOST01;
4214 * If we only have an RSA-PSS certificate allow RSA authentication
4215 * if TLS 1.2 and peer supports it.
4218 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4219 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4220 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4227 mask_a |= SSL_aNULL;
4230 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4231 * depending on the key usage extension.
4233 if (have_ecc_cert) {
4235 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4236 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4237 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4240 mask_a |= SSL_aECDSA;
4242 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4243 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4244 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4245 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4246 mask_a |= SSL_aECDSA;
4248 /* Allow Ed448 for TLS 1.2 if peer supports it */
4249 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4250 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4251 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4252 mask_a |= SSL_aECDSA;
4254 mask_k |= SSL_kECDHE;
4256 #ifndef OPENSSL_NO_PSK
4259 if (mask_k & SSL_kRSA)
4260 mask_k |= SSL_kRSAPSK;
4261 if (mask_k & SSL_kDHE)
4262 mask_k |= SSL_kDHEPSK;
4263 if (mask_k & SSL_kECDHE)
4264 mask_k |= SSL_kECDHEPSK;
4267 s->s3.tmp.mask_k = mask_k;
4268 s->s3.tmp.mask_a = mask_a;
4271 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4273 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4274 /* key usage, if present, must allow signing */
4275 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4276 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4280 return 1; /* all checks are ok */
4283 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4284 const unsigned char **serverinfo,
4285 size_t *serverinfo_length)
4287 CERT_PKEY *cpk = s->s3.tmp.cert;
4288 *serverinfo_length = 0;
4290 if (cpk == NULL || cpk->serverinfo == NULL)
4293 *serverinfo = cpk->serverinfo;
4294 *serverinfo_length = cpk->serverinfo_length;
4298 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4303 * If the session_id_length is 0, we are not supposed to cache it, and it
4304 * would be rather hard to do anyway :-)
4306 if (s->session->session_id_length == 0)
4310 * If sid_ctx_length is 0 there is no specific application context
4311 * associated with this session, so when we try to resume it and
4312 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4313 * indication that this is actually a session for the proper application
4314 * context, and the *handshake* will fail, not just the resumption attempt.
4315 * Do not cache (on the server) these sessions that are not resumable
4316 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4318 if (s->server && s->session->sid_ctx_length == 0
4319 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4322 i = s->session_ctx->session_cache_mode;
4324 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4326 * Add the session to the internal cache. In server side TLSv1.3 we
4327 * normally don't do this because by default it's a full stateless ticket
4328 * with only a dummy session id so there is no reason to cache it,
4330 * - we are doing early_data, in which case we cache so that we can
4332 * - the application has set a remove_session_cb so needs to know about
4333 * session timeout events
4334 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4336 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4337 && (!SSL_CONNECTION_IS_TLS13(s)
4339 || (s->max_early_data > 0
4340 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4341 || s->session_ctx->remove_session_cb != NULL
4342 || (s->options & SSL_OP_NO_TICKET) != 0))
4343 SSL_CTX_add_session(s->session_ctx, s->session);
4346 * Add the session to the external cache. We do this even in server side
4347 * TLSv1.3 without early data because some applications just want to
4348 * know about the creation of a session and aren't doing a full cache.
4350 if (s->session_ctx->new_session_cb != NULL) {
4351 SSL_SESSION_up_ref(s->session);
4352 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4354 SSL_SESSION_free(s->session);
4358 /* auto flush every 255 connections */
4359 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4360 TSAN_QUALIFIER int *stat;
4362 if (mode & SSL_SESS_CACHE_CLIENT)
4363 stat = &s->session_ctx->stats.sess_connect_good;
4365 stat = &s->session_ctx->stats.sess_accept_good;
4366 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4367 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4371 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4376 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4381 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4384 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4386 /* TODO(QUIC): Do we want this for QUIC? */
4388 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4391 if (s->method != meth) {
4392 const SSL_METHOD *sm = s->method;
4393 int (*hf) (SSL *) = sc->handshake_func;
4395 if (sm->version == meth->version)
4400 ret = s->method->ssl_init(s);
4403 if (hf == sm->ssl_connect)
4404 sc->handshake_func = meth->ssl_connect;
4405 else if (hf == sm->ssl_accept)
4406 sc->handshake_func = meth->ssl_accept;
4411 int SSL_get_error(const SSL *s, int i)
4416 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4417 #ifndef OPENSSL_NO_QUIC
4418 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
4422 return SSL_ERROR_NONE;
4424 #ifndef OPENSSL_NO_QUIC
4426 reason = ossl_quic_get_error(qc, i);
4427 if (reason != SSL_ERROR_NONE)
4433 return SSL_ERROR_SSL;
4436 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4437 * where we do encode the error
4439 if ((l = ERR_peek_error()) != 0) {
4440 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4441 return SSL_ERROR_SYSCALL;
4443 return SSL_ERROR_SSL;
4446 #ifndef OPENSSL_NO_QUIC
4450 if (SSL_want_read(s)) {
4451 bio = SSL_get_rbio(s);
4452 if (BIO_should_read(bio))
4453 return SSL_ERROR_WANT_READ;
4454 else if (BIO_should_write(bio))
4456 * This one doesn't make too much sense ... We never try to
4457 * write to the rbio, and an application program where rbio and
4458 * wbio are separate couldn't even know what it should wait for.
4459 * However if we ever set s->rwstate incorrectly (so that we
4460 * have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4461 * and wbio *are* the same, this test works around that bug; so
4462 * it might be safer to keep it.
4464 return SSL_ERROR_WANT_WRITE;
4465 else if (BIO_should_io_special(bio)) {
4466 reason = BIO_get_retry_reason(bio);
4467 if (reason == BIO_RR_CONNECT)
4468 return SSL_ERROR_WANT_CONNECT;
4469 else if (reason == BIO_RR_ACCEPT)
4470 return SSL_ERROR_WANT_ACCEPT;
4472 return SSL_ERROR_SYSCALL; /* unknown */
4476 if (SSL_want_write(s)) {
4478 * Access wbio directly - in order to use the buffered bio if
4482 if (BIO_should_write(bio))
4483 return SSL_ERROR_WANT_WRITE;
4484 else if (BIO_should_read(bio))
4486 * See above (SSL_want_read(s) with BIO_should_write(bio))
4488 return SSL_ERROR_WANT_READ;
4489 else if (BIO_should_io_special(bio)) {
4490 reason = BIO_get_retry_reason(bio);
4491 if (reason == BIO_RR_CONNECT)
4492 return SSL_ERROR_WANT_CONNECT;
4493 else if (reason == BIO_RR_ACCEPT)
4494 return SSL_ERROR_WANT_ACCEPT;
4496 return SSL_ERROR_SYSCALL;
4501 if (SSL_want_x509_lookup(s))
4502 return SSL_ERROR_WANT_X509_LOOKUP;
4503 if (SSL_want_retry_verify(s))
4504 return SSL_ERROR_WANT_RETRY_VERIFY;
4505 if (SSL_want_async(s))
4506 return SSL_ERROR_WANT_ASYNC;
4507 if (SSL_want_async_job(s))
4508 return SSL_ERROR_WANT_ASYNC_JOB;
4509 if (SSL_want_client_hello_cb(s))
4510 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4512 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4513 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4514 return SSL_ERROR_ZERO_RETURN;
4516 return SSL_ERROR_SYSCALL;
4519 static int ssl_do_handshake_intern(void *vargs)
4521 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4523 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4528 return sc->handshake_func(s);
4531 int SSL_do_handshake(SSL *s)
4534 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4535 #ifndef OPENSSL_NO_QUIC
4536 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4539 return ossl_quic_do_handshake(qc);
4542 if (sc->handshake_func == NULL) {
4543 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4547 ossl_statem_check_finish_init(sc, -1);
4549 s->method->ssl_renegotiate_check(s, 0);
4551 if (SSL_in_init(s) || SSL_in_before(s)) {
4552 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4553 struct ssl_async_args args;
4555 memset(&args, 0, sizeof(args));
4558 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4560 ret = sc->handshake_func(s);
4566 void SSL_set_accept_state(SSL *s)
4568 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4569 #ifndef OPENSSL_NO_QUIC
4570 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4573 ossl_quic_set_accept_state(qc);
4580 ossl_statem_clear(sc);
4581 sc->handshake_func = s->method->ssl_accept;
4582 /* Ignore return value. Its a void public API function */
4583 clear_record_layer(sc);
4586 void SSL_set_connect_state(SSL *s)
4588 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4589 #ifndef OPENSSL_NO_QUIC
4590 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4593 ossl_quic_set_connect_state(qc);
4600 ossl_statem_clear(sc);
4601 sc->handshake_func = s->method->ssl_connect;
4602 /* Ignore return value. Its a void public API function */
4603 clear_record_layer(sc);
4606 int ssl_undefined_function(SSL *s)
4608 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4612 int ssl_undefined_void_function(void)
4614 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4618 int ssl_undefined_const_function(const SSL *s)
4623 const SSL_METHOD *ssl_bad_method(int ver)
4625 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4629 const char *ssl_protocol_to_string(int version)
4633 case TLS1_3_VERSION:
4636 case TLS1_2_VERSION:
4639 case TLS1_1_VERSION:
4654 case DTLS1_2_VERSION:
4662 const char *SSL_get_version(const SSL *s)
4664 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4669 return ssl_protocol_to_string(sc->version);
4672 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4674 STACK_OF(X509_NAME) *sk;
4683 if ((sk = sk_X509_NAME_new_null()) == NULL)
4685 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4686 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4688 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4691 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4693 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4702 SSL *SSL_dup(SSL *s)
4706 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4707 SSL_CONNECTION *retsc;
4708 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4713 /* If we're not quiescent, just up_ref! */
4714 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4715 CRYPTO_UP_REF(&s->references, &i, s->lock);
4720 * Otherwise, copy configuration state, and session if set.
4722 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4724 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4727 if (sc->session != NULL) {
4729 * Arranges to share the same session via up_ref. This "copies"
4730 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4732 if (!SSL_copy_session_id(ret, s))
4736 * No session has been established yet, so we have to expect that
4737 * s->cert or ret->cert will be changed later -- they should not both
4738 * point to the same object, and thus we can't use
4739 * SSL_copy_session_id.
4741 if (!SSL_set_ssl_method(ret, s->method))
4744 if (sc->cert != NULL) {
4745 ssl_cert_free(retsc->cert);
4746 retsc->cert = ssl_cert_dup(sc->cert);
4747 if (retsc->cert == NULL)
4751 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4752 (int)sc->sid_ctx_length))
4756 if (!ssl_dane_dup(retsc, sc))
4758 retsc->version = sc->version;
4759 retsc->options = sc->options;
4760 retsc->min_proto_version = sc->min_proto_version;
4761 retsc->max_proto_version = sc->max_proto_version;
4762 retsc->mode = sc->mode;
4763 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4764 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4765 retsc->msg_callback = sc->msg_callback;
4766 retsc->msg_callback_arg = sc->msg_callback_arg;
4767 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4768 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4769 retsc->generate_session_id = sc->generate_session_id;
4771 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4773 /* copy app data, a little dangerous perhaps */
4774 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4777 retsc->server = sc->server;
4778 if (sc->handshake_func) {
4780 SSL_set_accept_state(ret);
4782 SSL_set_connect_state(ret);
4784 retsc->shutdown = sc->shutdown;
4785 retsc->hit = sc->hit;
4787 retsc->default_passwd_callback = sc->default_passwd_callback;
4788 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4790 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4792 /* dup the cipher_list and cipher_list_by_id stacks */
4793 if (sc->cipher_list != NULL) {
4794 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4797 if (sc->cipher_list_by_id != NULL)
4798 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4802 /* Dup the client_CA list */
4803 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4804 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4814 X509 *SSL_get_certificate(const SSL *s)
4816 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4821 if (sc->cert != NULL)
4822 return sc->cert->key->x509;
4827 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4829 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4834 if (sc->cert != NULL)
4835 return sc->cert->key->privatekey;
4840 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4842 if (ctx->cert != NULL)
4843 return ctx->cert->key->x509;
4848 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4850 if (ctx->cert != NULL)
4851 return ctx->cert->key->privatekey;
4856 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4858 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4863 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4864 return sc->session->cipher;
4868 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4870 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4875 return sc->s3.tmp.new_cipher;
4878 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4880 #ifndef OPENSSL_NO_COMP
4881 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4886 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4892 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4894 #ifndef OPENSSL_NO_COMP
4895 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4900 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4906 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4910 if (s->bbio != NULL) {
4911 /* Already buffered. */
4915 bbio = BIO_new(BIO_f_buffer());
4916 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
4918 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4922 s->wbio = BIO_push(bbio, s->wbio);
4924 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4929 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4931 /* callers ensure s is never null */
4932 if (s->bbio == NULL)
4935 s->wbio = BIO_pop(s->wbio);
4936 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4944 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4946 ctx->quiet_shutdown = mode;
4949 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4951 return ctx->quiet_shutdown;
4954 void SSL_set_quiet_shutdown(SSL *s, int mode)
4956 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4958 /* TODO(QUIC): Do we want this for QUIC? */
4962 sc->quiet_shutdown = mode;
4965 int SSL_get_quiet_shutdown(const SSL *s)
4967 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4969 /* TODO(QUIC): Do we want this for QUIC? */
4973 return sc->quiet_shutdown;
4976 void SSL_set_shutdown(SSL *s, int mode)
4978 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4980 /* TODO(QUIC): Do we want this for QUIC? */
4984 sc->shutdown = mode;
4987 int SSL_get_shutdown(const SSL *s)
4989 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4991 /* TODO(QUIC): Do we want this for QUIC? */
4995 return sc->shutdown;
4998 int SSL_version(const SSL *s)
5000 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5002 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5009 int SSL_client_version(const SSL *s)
5011 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5013 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5017 return sc->client_version;
5020 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
5025 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
5028 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5030 /* TODO(QUIC): Do we need this for QUIC support? */
5034 if (ssl->ctx == ctx)
5037 ctx = sc->session_ctx;
5038 new_cert = ssl_cert_dup(ctx->cert);
5039 if (new_cert == NULL) {
5043 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5044 ssl_cert_free(new_cert);
5048 ssl_cert_free(sc->cert);
5049 sc->cert = new_cert;
5052 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5053 * so setter APIs must prevent invalid lengths from entering the system.
5055 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5059 * If the session ID context matches that of the parent SSL_CTX,
5060 * inherit it from the new SSL_CTX as well. If however the context does
5061 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5062 * leave it unchanged.
5064 if ((ssl->ctx != NULL) &&
5065 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5066 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5067 sc->sid_ctx_length = ctx->sid_ctx_length;
5068 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5071 SSL_CTX_up_ref(ctx);
5072 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5078 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5080 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5084 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5086 X509_LOOKUP *lookup;
5088 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5092 /* We ignore errors, in case the directory doesn't exist */
5095 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5102 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5104 X509_LOOKUP *lookup;
5106 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5110 /* We ignore errors, in case the file doesn't exist */
5113 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5121 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5123 X509_LOOKUP *lookup;
5125 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5129 /* We ignore errors, in case the directory doesn't exist */
5132 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5139 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5141 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5145 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5147 return X509_STORE_load_path(ctx->cert_store, CApath);
5150 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5152 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5156 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5159 if (CAfile == NULL && CApath == NULL)
5161 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5163 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5168 void SSL_set_info_callback(SSL *ssl,
5169 void (*cb) (const SSL *ssl, int type, int val))
5171 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5176 sc->info_callback = cb;
5180 * One compiler (Diab DCC) doesn't like argument names in returned function
5183 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5186 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5191 return sc->info_callback;
5194 void SSL_set_verify_result(SSL *ssl, long arg)
5196 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5201 sc->verify_result = arg;
5204 long SSL_get_verify_result(const SSL *ssl)
5206 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5211 return sc->verify_result;
5214 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5216 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5222 return sizeof(sc->s3.client_random);
5223 if (outlen > sizeof(sc->s3.client_random))
5224 outlen = sizeof(sc->s3.client_random);
5225 memcpy(out, sc->s3.client_random, outlen);
5229 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5231 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5237 return sizeof(sc->s3.server_random);
5238 if (outlen > sizeof(sc->s3.server_random))
5239 outlen = sizeof(sc->s3.server_random);
5240 memcpy(out, sc->s3.server_random, outlen);
5244 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5245 unsigned char *out, size_t outlen)
5248 return session->master_key_length;
5249 if (outlen > session->master_key_length)
5250 outlen = session->master_key_length;
5251 memcpy(out, session->master_key, outlen);
5255 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5258 if (len > sizeof(sess->master_key))
5261 memcpy(sess->master_key, in, len);
5262 sess->master_key_length = len;
5267 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5269 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5272 void *SSL_get_ex_data(const SSL *s, int idx)
5274 return CRYPTO_get_ex_data(&s->ex_data, idx);
5277 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5279 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5282 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5284 return CRYPTO_get_ex_data(&s->ex_data, idx);
5287 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5289 return ctx->cert_store;
5292 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5294 X509_STORE_free(ctx->cert_store);
5295 ctx->cert_store = store;
5298 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5301 X509_STORE_up_ref(store);
5302 SSL_CTX_set_cert_store(ctx, store);
5305 int SSL_want(const SSL *s)
5307 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5315 #ifndef OPENSSL_NO_PSK
5316 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5318 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5319 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5322 OPENSSL_free(ctx->cert->psk_identity_hint);
5323 if (identity_hint != NULL) {
5324 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5325 if (ctx->cert->psk_identity_hint == NULL)
5328 ctx->cert->psk_identity_hint = NULL;
5332 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5334 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5339 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5340 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5343 OPENSSL_free(sc->cert->psk_identity_hint);
5344 if (identity_hint != NULL) {
5345 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5346 if (sc->cert->psk_identity_hint == NULL)
5349 sc->cert->psk_identity_hint = NULL;
5353 const char *SSL_get_psk_identity_hint(const SSL *s)
5355 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5357 if (sc == NULL || sc->session == NULL)
5360 return sc->session->psk_identity_hint;
5363 const char *SSL_get_psk_identity(const SSL *s)
5365 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5367 if (sc == NULL || sc->session == NULL)
5370 return sc->session->psk_identity;
5373 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5375 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5380 sc->psk_client_callback = cb;
5383 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5385 ctx->psk_client_callback = cb;
5388 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5390 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5395 sc->psk_server_callback = cb;
5398 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5400 ctx->psk_server_callback = cb;
5404 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5406 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5411 sc->psk_find_session_cb = cb;
5414 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5415 SSL_psk_find_session_cb_func cb)
5417 ctx->psk_find_session_cb = cb;
5420 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5422 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5427 sc->psk_use_session_cb = cb;
5430 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5431 SSL_psk_use_session_cb_func cb)
5433 ctx->psk_use_session_cb = cb;
5436 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5437 void (*cb) (int write_p, int version,
5438 int content_type, const void *buf,
5439 size_t len, SSL *ssl, void *arg))
5441 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5444 void SSL_set_msg_callback(SSL *ssl,
5445 void (*cb) (int write_p, int version,
5446 int content_type, const void *buf,
5447 size_t len, SSL *ssl, void *arg))
5449 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5452 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5453 int (*cb) (SSL *ssl,
5457 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5458 (void (*)(void))cb);
5461 void SSL_set_not_resumable_session_callback(SSL *ssl,
5462 int (*cb) (SSL *ssl,
5463 int is_forward_secure))
5465 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5466 (void (*)(void))cb);
5469 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5470 size_t (*cb) (SSL *ssl, int type,
5471 size_t len, void *arg))
5473 ctx->record_padding_cb = cb;
5476 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5478 ctx->record_padding_arg = arg;
5481 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5483 return ctx->record_padding_arg;
5486 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5488 /* block size of 0 or 1 is basically no padding */
5489 if (block_size == 1)
5490 ctx->block_padding = 0;
5491 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5492 ctx->block_padding = block_size;
5498 int SSL_set_record_padding_callback(SSL *ssl,
5499 size_t (*cb) (SSL *ssl, int type,
5500 size_t len, void *arg))
5503 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5508 b = SSL_get_wbio(ssl);
5509 if (b == NULL || !BIO_get_ktls_send(b)) {
5510 sc->rlayer.record_padding_cb = cb;
5516 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5518 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5523 sc->rlayer.record_padding_arg = arg;
5526 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5528 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5533 return sc->rlayer.record_padding_arg;
5536 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5538 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5543 /* block size of 0 or 1 is basically no padding */
5544 if (block_size == 1)
5545 sc->rlayer.block_padding = 0;
5546 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5547 sc->rlayer.block_padding = block_size;
5553 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5555 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5560 sc->num_tickets = num_tickets;
5565 size_t SSL_get_num_tickets(const SSL *s)
5567 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5572 return sc->num_tickets;
5575 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5577 ctx->num_tickets = num_tickets;
5582 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5584 return ctx->num_tickets;
5587 /* Retrieve handshake hashes */
5588 int ssl_handshake_hash(SSL_CONNECTION *s,
5589 unsigned char *out, size_t outlen,
5592 EVP_MD_CTX *ctx = NULL;
5593 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5594 int hashleni = EVP_MD_CTX_get_size(hdgst);
5597 if (hashleni < 0 || (size_t)hashleni > outlen) {
5598 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5602 ctx = EVP_MD_CTX_new();
5604 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5608 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5609 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5610 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5614 *hashlen = hashleni;
5618 EVP_MD_CTX_free(ctx);
5622 int SSL_session_reused(const SSL *s)
5624 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5632 int SSL_is_server(const SSL *s)
5634 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5642 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5643 void SSL_set_debug(SSL *s, int debug)
5645 /* Old function was do-nothing anyway... */
5651 void SSL_set_security_level(SSL *s, int level)
5653 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5658 sc->cert->sec_level = level;
5661 int SSL_get_security_level(const SSL *s)
5663 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5668 return sc->cert->sec_level;
5671 void SSL_set_security_callback(SSL *s,
5672 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5673 int op, int bits, int nid,
5674 void *other, void *ex))
5676 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5681 sc->cert->sec_cb = cb;
5684 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5685 const SSL_CTX *ctx, int op,
5686 int bits, int nid, void *other,
5688 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5693 return sc->cert->sec_cb;
5696 void SSL_set0_security_ex_data(SSL *s, void *ex)
5698 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5703 sc->cert->sec_ex = ex;
5706 void *SSL_get0_security_ex_data(const SSL *s)
5708 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5713 return sc->cert->sec_ex;
5716 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5718 ctx->cert->sec_level = level;
5721 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5723 return ctx->cert->sec_level;
5726 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5727 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5728 int op, int bits, int nid,
5729 void *other, void *ex))
5731 ctx->cert->sec_cb = cb;
5734 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5740 return ctx->cert->sec_cb;
5743 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5745 ctx->cert->sec_ex = ex;
5748 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5750 return ctx->cert->sec_ex;
5753 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5755 return ctx->options;
5758 uint64_t SSL_get_options(const SSL *s)
5760 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5768 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5770 return ctx->options |= op;
5773 uint64_t SSL_set_options(SSL *s, uint64_t op)
5775 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5776 OSSL_PARAM options[2], *opts = options;
5783 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5785 *opts = OSSL_PARAM_construct_end();
5787 /* Ignore return value */
5788 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5793 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5795 return ctx->options &= ~op;
5798 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5800 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5805 return sc->options &= ~op;
5808 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5810 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5815 return sc->verified_chain;
5818 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5820 #ifndef OPENSSL_NO_CT
5823 * Moves SCTs from the |src| stack to the |dst| stack.
5824 * The source of each SCT will be set to |origin|.
5825 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5827 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5829 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5830 sct_source_t origin)
5836 *dst = sk_SCT_new_null();
5838 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5843 while ((sct = sk_SCT_pop(src)) != NULL) {
5844 if (SCT_set_source(sct, origin) != 1)
5847 if (sk_SCT_push(*dst, sct) <= 0)
5855 sk_SCT_push(src, sct); /* Put the SCT back */
5860 * Look for data collected during ServerHello and parse if found.
5861 * Returns the number of SCTs extracted.
5863 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5865 int scts_extracted = 0;
5867 if (s->ext.scts != NULL) {
5868 const unsigned char *p = s->ext.scts;
5869 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5871 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5873 SCT_LIST_free(scts);
5876 return scts_extracted;
5880 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5881 * contains an SCT X509 extension. They will be stored in |s->scts|.
5883 * - The number of SCTs extracted, assuming an OCSP response exists.
5884 * - 0 if no OCSP response exists or it contains no SCTs.
5885 * - A negative integer if an error occurs.
5887 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5889 # ifndef OPENSSL_NO_OCSP
5890 int scts_extracted = 0;
5891 const unsigned char *p;
5892 OCSP_BASICRESP *br = NULL;
5893 OCSP_RESPONSE *rsp = NULL;
5894 STACK_OF(SCT) *scts = NULL;
5897 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5900 p = s->ext.ocsp.resp;
5901 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5905 br = OCSP_response_get1_basic(rsp);
5909 for (i = 0; i < OCSP_resp_count(br); ++i) {
5910 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5916 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5918 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5919 if (scts_extracted < 0)
5923 SCT_LIST_free(scts);
5924 OCSP_BASICRESP_free(br);
5925 OCSP_RESPONSE_free(rsp);
5926 return scts_extracted;
5928 /* Behave as if no OCSP response exists */
5934 * Attempts to extract SCTs from the peer certificate.
5935 * Return the number of SCTs extracted, or a negative integer if an error
5938 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5940 int scts_extracted = 0;
5941 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5944 STACK_OF(SCT) *scts =
5945 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5948 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5950 SCT_LIST_free(scts);
5953 return scts_extracted;
5957 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5958 * response (if it exists) and X509v3 extensions in the certificate.
5959 * Returns NULL if an error occurs.
5961 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5963 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5968 if (!sc->scts_parsed) {
5969 if (ct_extract_tls_extension_scts(sc) < 0 ||
5970 ct_extract_ocsp_response_scts(sc) < 0 ||
5971 ct_extract_x509v3_extension_scts(sc) < 0)
5974 sc->scts_parsed = 1;
5981 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5982 const STACK_OF(SCT) *scts, void *unused_arg)
5987 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5988 const STACK_OF(SCT) *scts, void *unused_arg)
5990 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5993 for (i = 0; i < count; ++i) {
5994 SCT *sct = sk_SCT_value(scts, i);
5995 int status = SCT_get_validation_status(sct);
5997 if (status == SCT_VALIDATION_STATUS_VALID)
6000 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
6004 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
6007 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6013 * Since code exists that uses the custom extension handler for CT, look
6014 * for this and throw an error if they have already registered to use CT.
6016 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6017 TLSEXT_TYPE_signed_certificate_timestamp))
6019 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6023 if (callback != NULL) {
6025 * If we are validating CT, then we MUST accept SCTs served via OCSP
6027 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6031 sc->ct_validation_callback = callback;
6032 sc->ct_validation_callback_arg = arg;
6037 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6038 ssl_ct_validation_cb callback, void *arg)
6041 * Since code exists that uses the custom extension handler for CT, look for
6042 * this and throw an error if they have already registered to use CT.
6044 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6045 TLSEXT_TYPE_signed_certificate_timestamp))
6047 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6051 ctx->ct_validation_callback = callback;
6052 ctx->ct_validation_callback_arg = arg;
6056 int SSL_ct_is_enabled(const SSL *s)
6058 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6063 return sc->ct_validation_callback != NULL;
6066 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6068 return ctx->ct_validation_callback != NULL;
6071 int ssl_validate_ct(SSL_CONNECTION *s)
6074 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6076 SSL_DANE *dane = &s->dane;
6077 CT_POLICY_EVAL_CTX *ctx = NULL;
6078 const STACK_OF(SCT) *scts;
6081 * If no callback is set, the peer is anonymous, or its chain is invalid,
6082 * skip SCT validation - just return success. Applications that continue
6083 * handshakes without certificates, with unverified chains, or pinned leaf
6084 * certificates are outside the scope of the WebPKI and CT.
6086 * The above exclusions notwithstanding the vast majority of peers will
6087 * have rather ordinary certificate chains validated by typical
6088 * applications that perform certificate verification and therefore will
6089 * process SCTs when enabled.
6091 if (s->ct_validation_callback == NULL || cert == NULL ||
6092 s->verify_result != X509_V_OK ||
6093 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6097 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6098 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6100 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6101 switch (dane->mtlsa->usage) {
6102 case DANETLS_USAGE_DANE_TA:
6103 case DANETLS_USAGE_DANE_EE:
6108 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6109 SSL_CONNECTION_GET_CTX(s)->propq);
6111 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6115 issuer = sk_X509_value(s->verified_chain, 1);
6116 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6117 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6118 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6119 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6120 CT_POLICY_EVAL_CTX_set_time(
6121 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6123 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6126 * This function returns success (> 0) only when all the SCTs are valid, 0
6127 * when some are invalid, and < 0 on various internal errors (out of
6128 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6129 * reason to abort the handshake, that decision is up to the callback.
6130 * Therefore, we error out only in the unexpected case that the return
6131 * value is negative.
6133 * XXX: One might well argue that the return value of this function is an
6134 * unfortunate design choice. Its job is only to determine the validation
6135 * status of each of the provided SCTs. So long as it correctly separates
6136 * the wheat from the chaff it should return success. Failure in this case
6137 * ought to correspond to an inability to carry out its duties.
6139 if (SCT_LIST_validate(scts, ctx) < 0) {
6140 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6144 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6146 ret = 0; /* This function returns 0 on failure */
6148 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6151 CT_POLICY_EVAL_CTX_free(ctx);
6153 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6154 * failure return code here. Also the application may wish the complete
6155 * the handshake, and then disconnect cleanly at a higher layer, after
6156 * checking the verification status of the completed connection.
6158 * We therefore force a certificate verification failure which will be
6159 * visible via SSL_get_verify_result() and cached as part of any resumed
6162 * Note: the permissive callback is for information gathering only, always
6163 * returns success, and does not affect verification status. Only the
6164 * strict callback or a custom application-specified callback can trigger
6165 * connection failure or record a verification error.
6168 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6172 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6174 switch (validation_mode) {
6176 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6178 case SSL_CT_VALIDATION_PERMISSIVE:
6179 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6180 case SSL_CT_VALIDATION_STRICT:
6181 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6185 int SSL_enable_ct(SSL *s, int validation_mode)
6187 switch (validation_mode) {
6189 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6191 case SSL_CT_VALIDATION_PERMISSIVE:
6192 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6193 case SSL_CT_VALIDATION_STRICT:
6194 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6198 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6200 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6203 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6205 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6208 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6210 CTLOG_STORE_free(ctx->ctlog_store);
6211 ctx->ctlog_store = logs;
6214 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6216 return ctx->ctlog_store;
6219 #endif /* OPENSSL_NO_CT */
6221 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6224 c->client_hello_cb = cb;
6225 c->client_hello_cb_arg = arg;
6228 int SSL_client_hello_isv2(SSL *s)
6230 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6235 if (sc->clienthello == NULL)
6237 return sc->clienthello->isv2;
6240 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6242 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6247 if (sc->clienthello == NULL)
6249 return sc->clienthello->legacy_version;
6252 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6254 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6259 if (sc->clienthello == NULL)
6262 *out = sc->clienthello->random;
6263 return SSL3_RANDOM_SIZE;
6266 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6268 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6273 if (sc->clienthello == NULL)
6276 *out = sc->clienthello->session_id;
6277 return sc->clienthello->session_id_len;
6280 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6282 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6287 if (sc->clienthello == NULL)
6290 *out = PACKET_data(&sc->clienthello->ciphersuites);
6291 return PACKET_remaining(&sc->clienthello->ciphersuites);
6294 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6296 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6301 if (sc->clienthello == NULL)
6304 *out = sc->clienthello->compressions;
6305 return sc->clienthello->compressions_len;
6308 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6313 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6318 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6320 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6321 ext = sc->clienthello->pre_proc_exts + i;
6330 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6332 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6333 ext = sc->clienthello->pre_proc_exts + i;
6335 if (ext->received_order >= num)
6337 present[ext->received_order] = ext->type;
6344 OPENSSL_free(present);
6348 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6352 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6357 if (sc->clienthello == NULL || num_exts == NULL)
6359 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6360 ext = sc->clienthello->pre_proc_exts + i;
6372 if (*num_exts < num)
6374 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6375 ext = sc->clienthello->pre_proc_exts + i;
6377 if (ext->received_order >= num)
6379 exts[ext->received_order] = ext->type;
6386 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6391 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6396 if (sc->clienthello == NULL)
6398 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6399 r = sc->clienthello->pre_proc_exts + i;
6400 if (r->present && r->type == type) {
6402 *out = PACKET_data(&r->data);
6404 *outlen = PACKET_remaining(&r->data);
6411 int SSL_free_buffers(SSL *ssl)
6414 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6421 return rl->rrlmethod->free_buffers(rl->rrl)
6422 && rl->wrlmethod->free_buffers(rl->wrl);
6425 int SSL_alloc_buffers(SSL *ssl)
6428 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6435 return rl->rrlmethod->alloc_buffers(rl->rrl)
6436 && rl->wrlmethod->alloc_buffers(rl->wrl);
6439 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6441 ctx->keylog_callback = cb;
6444 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6446 return ctx->keylog_callback;
6449 static int nss_keylog_int(const char *prefix,
6451 const uint8_t *parameter_1,
6452 size_t parameter_1_len,
6453 const uint8_t *parameter_2,
6454 size_t parameter_2_len)
6457 char *cursor = NULL;
6461 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6463 if (sctx->keylog_callback == NULL)
6467 * Our output buffer will contain the following strings, rendered with
6468 * space characters in between, terminated by a NULL character: first the
6469 * prefix, then the first parameter, then the second parameter. The
6470 * meaning of each parameter depends on the specific key material being
6471 * logged. Note that the first and second parameters are encoded in
6472 * hexadecimal, so we need a buffer that is twice their lengths.
6474 prefix_len = strlen(prefix);
6475 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6476 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6479 strcpy(cursor, prefix);
6480 cursor += prefix_len;
6483 for (i = 0; i < parameter_1_len; i++) {
6484 sprintf(cursor, "%02x", parameter_1[i]);
6489 for (i = 0; i < parameter_2_len; i++) {
6490 sprintf(cursor, "%02x", parameter_2[i]);
6495 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6496 OPENSSL_clear_free(out, out_len);
6501 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6502 const uint8_t *encrypted_premaster,
6503 size_t encrypted_premaster_len,
6504 const uint8_t *premaster,
6505 size_t premaster_len)
6507 if (encrypted_premaster_len < 8) {
6508 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6512 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6513 return nss_keylog_int("RSA",
6515 encrypted_premaster,
6521 int ssl_log_secret(SSL_CONNECTION *sc,
6523 const uint8_t *secret,
6526 return nss_keylog_int(label,
6528 sc->s3.client_random,
6534 #define SSLV2_CIPHER_LEN 3
6536 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6540 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6542 if (PACKET_remaining(cipher_suites) == 0) {
6543 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6547 if (PACKET_remaining(cipher_suites) % n != 0) {
6548 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6552 OPENSSL_free(s->s3.tmp.ciphers_raw);
6553 s->s3.tmp.ciphers_raw = NULL;
6554 s->s3.tmp.ciphers_rawlen = 0;
6557 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6558 PACKET sslv2ciphers = *cipher_suites;
6559 unsigned int leadbyte;
6563 * We store the raw ciphers list in SSLv3+ format so we need to do some
6564 * preprocessing to convert the list first. If there are any SSLv2 only
6565 * ciphersuites with a non-zero leading byte then we are going to
6566 * slightly over allocate because we won't store those. But that isn't a
6569 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6570 s->s3.tmp.ciphers_raw = raw;
6572 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6575 for (s->s3.tmp.ciphers_rawlen = 0;
6576 PACKET_remaining(&sslv2ciphers) > 0;
6577 raw += TLS_CIPHER_LEN) {
6578 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6580 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6583 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6584 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6585 OPENSSL_free(s->s3.tmp.ciphers_raw);
6586 s->s3.tmp.ciphers_raw = NULL;
6587 s->s3.tmp.ciphers_rawlen = 0;
6591 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6593 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6594 &s->s3.tmp.ciphers_rawlen)) {
6595 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6601 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6602 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6603 STACK_OF(SSL_CIPHER) **scsvs)
6606 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6611 if (!PACKET_buf_init(&pkt, bytes, len))
6613 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6616 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6617 STACK_OF(SSL_CIPHER) **skp,
6618 STACK_OF(SSL_CIPHER) **scsvs_out,
6619 int sslv2format, int fatal)
6621 const SSL_CIPHER *c;
6622 STACK_OF(SSL_CIPHER) *sk = NULL;
6623 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6625 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6626 unsigned char cipher[SSLV2_CIPHER_LEN];
6628 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6630 if (PACKET_remaining(cipher_suites) == 0) {
6632 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6634 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6638 if (PACKET_remaining(cipher_suites) % n != 0) {
6640 SSLfatal(s, SSL_AD_DECODE_ERROR,
6641 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6643 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6647 sk = sk_SSL_CIPHER_new_null();
6648 scsvs = sk_SSL_CIPHER_new_null();
6649 if (sk == NULL || scsvs == NULL) {
6651 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6653 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6657 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6659 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6660 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6661 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6663 if (sslv2format && cipher[0] != '\0')
6666 /* For SSLv2-compat, ignore leading 0-byte. */
6667 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6669 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6670 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6672 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6674 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6679 if (PACKET_remaining(cipher_suites) > 0) {
6681 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6683 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6690 sk_SSL_CIPHER_free(sk);
6691 if (scsvs_out != NULL)
6694 sk_SSL_CIPHER_free(scsvs);
6697 sk_SSL_CIPHER_free(sk);
6698 sk_SSL_CIPHER_free(scsvs);
6702 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6704 ctx->max_early_data = max_early_data;
6709 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6711 return ctx->max_early_data;
6714 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6716 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6721 sc->max_early_data = max_early_data;
6726 uint32_t SSL_get_max_early_data(const SSL *s)
6728 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6733 return sc->max_early_data;
6736 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6738 ctx->recv_max_early_data = recv_max_early_data;
6743 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6745 return ctx->recv_max_early_data;
6748 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6750 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6755 sc->recv_max_early_data = recv_max_early_data;
6760 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6762 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6767 return sc->recv_max_early_data;
6770 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6772 /* Return any active Max Fragment Len extension */
6773 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6774 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6776 /* return current SSL connection setting */
6777 return sc->max_send_fragment;
6780 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6782 /* Return a value regarding an active Max Fragment Len extension */
6783 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6784 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6785 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6787 /* else limit |split_send_fragment| to current |max_send_fragment| */
6788 if (sc->split_send_fragment > sc->max_send_fragment)
6789 return sc->max_send_fragment;
6791 /* return current SSL connection setting */
6792 return sc->split_send_fragment;
6795 int SSL_stateless(SSL *s)
6798 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6800 /* TODO(QUIC): This will need further work. */
6804 /* Ensure there is no state left over from a previous invocation */
6810 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6811 ret = SSL_accept(s);
6812 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6814 if (ret > 0 && sc->ext.cookieok)
6817 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6823 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6825 ctx->pha_enabled = val;
6828 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6830 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6835 sc->pha_enabled = val;
6838 int SSL_verify_client_post_handshake(SSL *ssl)
6840 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6845 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6846 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6850 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6854 if (!SSL_is_init_finished(ssl)) {
6855 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6859 switch (sc->post_handshake_auth) {
6861 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6864 case SSL_PHA_EXT_SENT:
6865 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6867 case SSL_PHA_EXT_RECEIVED:
6869 case SSL_PHA_REQUEST_PENDING:
6870 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6872 case SSL_PHA_REQUESTED:
6873 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6877 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6879 /* checks verify_mode and algorithm_auth */
6880 if (!send_certificate_request(sc)) {
6881 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6882 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6886 ossl_statem_set_in_init(sc, 1);
6890 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6891 SSL_CTX_generate_session_ticket_fn gen_cb,
6892 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6895 ctx->generate_ticket_cb = gen_cb;
6896 ctx->decrypt_ticket_cb = dec_cb;
6897 ctx->ticket_cb_data = arg;
6901 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6902 SSL_allow_early_data_cb_fn cb,
6905 ctx->allow_early_data_cb = cb;
6906 ctx->allow_early_data_cb_data = arg;
6909 void SSL_set_allow_early_data_cb(SSL *s,
6910 SSL_allow_early_data_cb_fn cb,
6913 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6918 sc->allow_early_data_cb = cb;
6919 sc->allow_early_data_cb_data = arg;
6922 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6924 const char *properties)
6926 const EVP_CIPHER *ciph;
6928 ciph = tls_get_cipher_from_engine(nid);
6933 * If there is no engine cipher then we do an explicit fetch. This may fail
6934 * and that could be ok
6937 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6943 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6945 /* Don't up-ref an implicit EVP_CIPHER */
6946 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6950 * The cipher was explicitly fetched and therefore it is safe to cast
6953 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6956 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6961 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6963 * The cipher was explicitly fetched and therefore it is safe to cast
6966 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6970 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6972 const char *properties)
6976 md = tls_get_digest_from_engine(nid);
6980 /* Otherwise we do an explicit fetch */
6982 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6987 int ssl_evp_md_up_ref(const EVP_MD *md)
6989 /* Don't up-ref an implicit EVP_MD */
6990 if (EVP_MD_get0_provider(md) == NULL)
6994 * The digest was explicitly fetched and therefore it is safe to cast
6997 return EVP_MD_up_ref((EVP_MD *)md);
7000 void ssl_evp_md_free(const EVP_MD *md)
7005 if (EVP_MD_get0_provider(md) != NULL) {
7007 * The digest was explicitly fetched and therefore it is safe to cast
7010 EVP_MD_free((EVP_MD *)md);
7014 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
7016 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7021 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7022 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7023 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7026 EVP_PKEY_free(sc->cert->dh_tmp);
7027 sc->cert->dh_tmp = dhpkey;
7031 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
7033 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7034 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7035 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7038 EVP_PKEY_free(ctx->cert->dh_tmp);
7039 ctx->cert->dh_tmp = dhpkey;
7043 /* QUIC-specific methods which are supported on QUIC connections only. */
7044 int SSL_tick(SSL *s)
7047 #ifndef OPENSSL_NO_QUIC
7048 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7051 return ossl_quic_tick(qc);
7054 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7055 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7057 * DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7058 * which we consider a success case. Theoretically DTLSv1_handle_timeout
7059 * can also return 0 if s is NULL or not a DTLS object, but we've
7060 * already ruled out those possibilities above, so this is not possible
7061 * here. Thus the only failure cases are where DTLSv1_handle_timeout
7064 return DTLSv1_handle_timeout(s) >= 0;
7069 int SSL_get_tick_timeout(SSL *s, struct timeval *tv)
7072 #ifndef OPENSSL_NO_QUIC
7073 QUIC_CONNECTION *qc;
7075 qc = QUIC_CONNECTION_FROM_SSL(s);
7077 return ossl_quic_get_tick_timeout(qc, tv);
7080 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7081 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7082 && DTLSv1_get_timeout(s, tv))
7090 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7092 #ifndef OPENSSL_NO_QUIC
7093 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7098 return ossl_quic_get_rpoll_descriptor(qc, desc);
7104 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7106 #ifndef OPENSSL_NO_QUIC
7107 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7112 return ossl_quic_get_wpoll_descriptor(qc, desc);
7118 int SSL_net_read_desired(SSL *s)
7120 #ifndef OPENSSL_NO_QUIC
7121 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7126 return ossl_quic_get_net_read_desired(qc);
7132 int SSL_net_write_desired(SSL *s)
7134 #ifndef OPENSSL_NO_QUIC
7135 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7140 return ossl_quic_get_net_write_desired(qc);
7146 int SSL_set_blocking_mode(SSL *s, int blocking)
7148 #ifndef OPENSSL_NO_QUIC
7149 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7154 return ossl_quic_conn_set_blocking_mode(qc, blocking);
7160 int SSL_get_blocking_mode(SSL *s)
7162 #ifndef OPENSSL_NO_QUIC
7163 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7168 return ossl_quic_conn_get_blocking_mode(qc);
7174 int SSL_set_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr)
7176 #ifndef OPENSSL_NO_QUIC
7177 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7182 return ossl_quic_conn_set_initial_peer_addr(qc, peer_addr);
7188 int SSL_shutdown_ex(SSL *ssl, uint64_t flags,
7189 const SSL_SHUTDOWN_EX_ARGS *args,
7192 #ifndef OPENSSL_NO_QUIC
7193 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(ssl);
7196 return SSL_shutdown(ssl);
7198 return ossl_quic_conn_shutdown(qc, flags, args, args_len);
7200 return SSL_shutdown(ssl);
7204 int SSL_stream_conclude(SSL *ssl, uint64_t flags)
7206 #ifndef OPENSSL_NO_QUIC
7207 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(ssl);
7212 return ossl_quic_conn_stream_conclude(qc);