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)
718 ssl->defltmeth = ssl->method = method;
720 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
726 SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, const SSL_METHOD *method)
731 s = OPENSSL_zalloc(sizeof(*s));
736 if (!ossl_ssl_init(ssl, ctx, method, SSL_TYPE_SSL_CONNECTION)) {
742 RECORD_LAYER_init(&s->rlayer, s);
744 s->options = ctx->options;
745 s->dane.flags = ctx->dane.flags;
746 s->min_proto_version = ctx->min_proto_version;
747 s->max_proto_version = ctx->max_proto_version;
749 s->max_cert_list = ctx->max_cert_list;
750 s->max_early_data = ctx->max_early_data;
751 s->recv_max_early_data = ctx->recv_max_early_data;
752 s->num_tickets = ctx->num_tickets;
753 s->pha_enabled = ctx->pha_enabled;
755 /* Shallow copy of the ciphersuites stack */
756 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
757 if (s->tls13_ciphersuites == NULL)
761 * Earlier library versions used to copy the pointer to the CERT, not
762 * its contents; only when setting new parameters for the per-SSL
763 * copy, ssl_cert_new would be called (and the direct reference to
764 * the per-SSL_CTX settings would be lost, but those still were
765 * indirectly accessed for various purposes, and for that reason they
766 * used to be known as s->ctx->default_cert). Now we don't look at the
767 * SSL_CTX's CERT after having duplicated it once.
769 s->cert = ssl_cert_dup(ctx->cert);
773 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
774 s->msg_callback = ctx->msg_callback;
775 s->msg_callback_arg = ctx->msg_callback_arg;
776 s->verify_mode = ctx->verify_mode;
777 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
778 s->rlayer.record_padding_cb = ctx->record_padding_cb;
779 s->rlayer.record_padding_arg = ctx->record_padding_arg;
780 s->rlayer.block_padding = ctx->block_padding;
781 s->sid_ctx_length = ctx->sid_ctx_length;
782 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
784 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
785 s->verify_callback = ctx->default_verify_callback;
786 s->generate_session_id = ctx->generate_session_id;
788 s->param = X509_VERIFY_PARAM_new();
789 if (s->param == NULL)
791 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
792 s->quiet_shutdown = ctx->quiet_shutdown;
794 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
795 s->max_send_fragment = ctx->max_send_fragment;
796 s->split_send_fragment = ctx->split_send_fragment;
797 s->max_pipelines = ctx->max_pipelines;
798 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
801 s->ext.debug_arg = NULL;
802 s->ext.ticket_expected = 0;
803 s->ext.status_type = ctx->ext.status_type;
804 s->ext.status_expected = 0;
805 s->ext.ocsp.ids = NULL;
806 s->ext.ocsp.exts = NULL;
807 s->ext.ocsp.resp = NULL;
808 s->ext.ocsp.resp_len = 0;
810 s->session_ctx = ctx;
811 if (ctx->ext.ecpointformats) {
812 s->ext.ecpointformats =
813 OPENSSL_memdup(ctx->ext.ecpointformats,
814 ctx->ext.ecpointformats_len);
815 if (!s->ext.ecpointformats) {
816 s->ext.ecpointformats_len = 0;
819 s->ext.ecpointformats_len =
820 ctx->ext.ecpointformats_len;
822 if (ctx->ext.supportedgroups) {
823 s->ext.supportedgroups =
824 OPENSSL_memdup(ctx->ext.supportedgroups,
825 ctx->ext.supportedgroups_len
826 * sizeof(*ctx->ext.supportedgroups));
827 if (!s->ext.supportedgroups) {
828 s->ext.supportedgroups_len = 0;
831 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
834 #ifndef OPENSSL_NO_NEXTPROTONEG
838 if (ctx->ext.alpn != NULL) {
839 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
840 if (s->ext.alpn == NULL) {
844 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
845 s->ext.alpn_len = ctx->ext.alpn_len;
848 s->verified_chain = NULL;
849 s->verify_result = X509_V_OK;
851 s->default_passwd_callback = ctx->default_passwd_callback;
852 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
854 s->key_update = SSL_KEY_UPDATE_NONE;
856 s->allow_early_data_cb = ctx->allow_early_data_cb;
857 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
859 if (!method->ssl_init(ssl))
862 s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
864 if (!method->ssl_reset(ssl))
867 #ifndef OPENSSL_NO_PSK
868 s->psk_client_callback = ctx->psk_client_callback;
869 s->psk_server_callback = ctx->psk_server_callback;
871 s->psk_find_session_cb = ctx->psk_find_session_cb;
872 s->psk_use_session_cb = ctx->psk_use_session_cb;
874 s->async_cb = ctx->async_cb;
875 s->async_cb_arg = ctx->async_cb_arg;
879 #ifndef OPENSSL_NO_COMP_ALG
880 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
883 #ifndef OPENSSL_NO_CT
884 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
885 ctx->ct_validation_callback_arg))
891 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
894 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
897 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
903 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
905 return ossl_ssl_connection_new_int(ctx, ctx->method);
908 int SSL_is_dtls(const SSL *s)
910 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
915 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
918 int SSL_up_ref(SSL *s)
922 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
925 REF_PRINT_COUNT("SSL", s);
926 REF_ASSERT_ISNT(i < 2);
927 return ((i > 1) ? 1 : 0);
930 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
931 unsigned int sid_ctx_len)
933 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
934 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
937 ctx->sid_ctx_length = sid_ctx_len;
938 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
943 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
944 unsigned int sid_ctx_len)
946 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
951 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
952 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
955 sc->sid_ctx_length = sid_ctx_len;
956 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
961 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
963 if (!CRYPTO_THREAD_write_lock(ctx->lock))
965 ctx->generate_session_id = cb;
966 CRYPTO_THREAD_unlock(ctx->lock);
970 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
972 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
974 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
976 sc->generate_session_id = cb;
977 CRYPTO_THREAD_unlock(ssl->lock);
981 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
985 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
986 * we can "construct" a session to give us the desired check - i.e. to
987 * find if there's a session in the hash table that would conflict with
988 * any new session built out of this id/id_len and the ssl_version in use
992 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
994 if (sc == NULL || id_len > sizeof(r.session_id))
997 r.ssl_version = sc->version;
998 r.session_id_length = id_len;
999 memcpy(r.session_id, id, id_len);
1001 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1003 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1004 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1008 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1010 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1013 int SSL_set_purpose(SSL *s, int purpose)
1015 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1020 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1023 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1025 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1028 int SSL_set_trust(SSL *s, int trust)
1030 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1035 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1038 int SSL_set1_host(SSL *s, const char *hostname)
1040 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1045 /* If a hostname is provided and parses as an IP address,
1046 * treat it as such. */
1047 if (hostname != NULL
1048 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1051 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1054 int SSL_add1_host(SSL *s, const char *hostname)
1056 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1061 /* If a hostname is provided and parses as an IP address,
1062 * treat it as such. */
1065 ASN1_OCTET_STRING *ip;
1068 ip = a2i_IPADDRESS(hostname);
1070 /* We didn't want it; only to check if it *is* an IP address */
1071 ASN1_OCTET_STRING_free(ip);
1073 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1076 OPENSSL_free(old_ip);
1077 /* There can be only one IP address */
1081 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1085 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1088 void SSL_set_hostflags(SSL *s, unsigned int flags)
1090 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1095 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1098 const char *SSL_get0_peername(SSL *s)
1100 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1105 return X509_VERIFY_PARAM_get0_peername(sc->param);
1108 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1110 return dane_ctx_enable(&ctx->dane);
1113 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1115 unsigned long orig = ctx->dane.flags;
1117 ctx->dane.flags |= flags;
1121 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1123 unsigned long orig = ctx->dane.flags;
1125 ctx->dane.flags &= ~flags;
1129 int SSL_dane_enable(SSL *s, const char *basedomain)
1132 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1138 if (s->ctx->dane.mdmax == 0) {
1139 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1142 if (dane->trecs != NULL) {
1143 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1148 * Default SNI name. This rejects empty names, while set1_host below
1149 * accepts them and disables hostname checks. To avoid side-effects with
1150 * invalid input, set the SNI name first.
1152 if (sc->ext.hostname == NULL) {
1153 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1154 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1159 /* Primary RFC6125 reference identifier */
1160 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1161 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1167 dane->dctx = &s->ctx->dane;
1168 dane->trecs = sk_danetls_record_new_null();
1170 if (dane->trecs == NULL) {
1171 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1177 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1180 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1185 orig = sc->dane.flags;
1187 sc->dane.flags |= flags;
1191 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1194 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1199 orig = sc->dane.flags;
1201 sc->dane.flags &= ~flags;
1205 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1208 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1215 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1219 *mcert = dane->mcert;
1221 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1226 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1227 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1230 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1237 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1241 *usage = dane->mtlsa->usage;
1243 *selector = dane->mtlsa->selector;
1245 *mtype = dane->mtlsa->mtype;
1247 *data = dane->mtlsa->data;
1249 *dlen = dane->mtlsa->dlen;
1254 SSL_DANE *SSL_get0_dane(SSL *s)
1256 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1264 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1265 uint8_t mtype, const unsigned char *data, size_t dlen)
1267 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1272 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1275 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1278 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1281 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1283 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1286 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1288 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1293 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1296 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1301 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1303 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1311 void SSL_certs_clear(SSL *s)
1313 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1318 ssl_cert_clear_certs(sc->cert);
1321 void SSL_free(SSL *s)
1327 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1328 REF_PRINT_COUNT("SSL", s);
1331 REF_ASSERT_ISNT(i < 0);
1333 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1335 if (s->method != NULL)
1336 s->method->ssl_free(s);
1338 SSL_CTX_free(s->ctx);
1339 CRYPTO_THREAD_lock_free(s->lock);
1344 void ossl_ssl_connection_free(SSL *ssl)
1348 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1352 X509_VERIFY_PARAM_free(s->param);
1353 dane_final(&s->dane);
1355 /* Ignore return value */
1356 ssl_free_wbio_buffer(s);
1358 RECORD_LAYER_clear(&s->rlayer);
1360 BUF_MEM_free(s->init_buf);
1362 /* add extra stuff */
1363 sk_SSL_CIPHER_free(s->cipher_list);
1364 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1365 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1366 sk_SSL_CIPHER_free(s->peer_ciphers);
1368 /* Make the next call work :-) */
1369 if (s->session != NULL) {
1370 ssl_clear_bad_session(s);
1371 SSL_SESSION_free(s->session);
1373 SSL_SESSION_free(s->psksession);
1374 OPENSSL_free(s->psksession_id);
1376 ssl_cert_free(s->cert);
1377 OPENSSL_free(s->shared_sigalgs);
1378 /* Free up if allocated */
1380 OPENSSL_free(s->ext.hostname);
1381 SSL_CTX_free(s->session_ctx);
1382 OPENSSL_free(s->ext.ecpointformats);
1383 OPENSSL_free(s->ext.peer_ecpointformats);
1384 OPENSSL_free(s->ext.supportedgroups);
1385 OPENSSL_free(s->ext.peer_supportedgroups);
1386 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1387 #ifndef OPENSSL_NO_OCSP
1388 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1390 #ifndef OPENSSL_NO_CT
1391 SCT_LIST_free(s->scts);
1392 OPENSSL_free(s->ext.scts);
1394 OPENSSL_free(s->ext.ocsp.resp);
1395 OPENSSL_free(s->ext.alpn);
1396 OPENSSL_free(s->ext.tls13_cookie);
1397 if (s->clienthello != NULL)
1398 OPENSSL_free(s->clienthello->pre_proc_exts);
1399 OPENSSL_free(s->clienthello);
1400 OPENSSL_free(s->pha_context);
1401 EVP_MD_CTX_free(s->pha_dgst);
1403 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1404 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1406 OSSL_STACK_OF_X509_free(s->verified_chain);
1408 if (ssl->method != NULL)
1409 ssl->method->ssl_deinit(ssl);
1411 ASYNC_WAIT_CTX_free(s->waitctx);
1413 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1414 OPENSSL_free(s->ext.npn);
1417 #ifndef OPENSSL_NO_SRTP
1418 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1422 * We do this late. We want to ensure that any other references we held to
1423 * these BIOs are freed first *before* we call BIO_free_all(), because
1424 * BIO_free_all() will only free each BIO in the chain if the number of
1425 * references to the first BIO have dropped to 0
1427 BIO_free_all(s->wbio);
1429 BIO_free_all(s->rbio);
1433 void SSL_set0_rbio(SSL *s, BIO *rbio)
1435 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1436 #ifndef OPENSSL_NO_QUIC
1437 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1440 ossl_quic_conn_set0_net_rbio(qc, rbio);
1448 BIO_free_all(sc->rbio);
1450 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1453 void SSL_set0_wbio(SSL *s, BIO *wbio)
1455 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1456 #ifndef OPENSSL_NO_QUIC
1457 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1460 ossl_quic_conn_set0_net_wbio(qc, wbio);
1469 * If the output buffering BIO is still in place, remove it
1471 if (sc->bbio != NULL)
1472 sc->wbio = BIO_pop(sc->wbio);
1474 BIO_free_all(sc->wbio);
1477 /* Re-attach |bbio| to the new |wbio|. */
1478 if (sc->bbio != NULL)
1479 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1481 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1484 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1487 * For historical reasons, this function has many different cases in
1488 * ownership handling.
1491 /* If nothing has changed, do nothing */
1492 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1496 * If the two arguments are equal then one fewer reference is granted by the
1497 * caller than we want to take
1499 if (rbio != NULL && rbio == wbio)
1503 * If only the wbio is changed only adopt one reference.
1505 if (rbio == SSL_get_rbio(s)) {
1506 SSL_set0_wbio(s, wbio);
1510 * There is an asymmetry here for historical reasons. If only the rbio is
1511 * changed AND the rbio and wbio were originally different, then we only
1512 * adopt one reference.
1514 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1515 SSL_set0_rbio(s, rbio);
1519 /* Otherwise, adopt both references. */
1520 SSL_set0_rbio(s, rbio);
1521 SSL_set0_wbio(s, wbio);
1524 BIO *SSL_get_rbio(const SSL *s)
1526 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1527 #ifndef OPENSSL_NO_QUIC
1528 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1531 return ossl_quic_conn_get_net_rbio(qc);
1540 BIO *SSL_get_wbio(const SSL *s)
1542 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1543 #ifndef OPENSSL_NO_QUIC
1544 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1547 return ossl_quic_conn_get_net_rbio(qc);
1553 if (sc->bbio != NULL) {
1555 * If |bbio| is active, the true caller-configured BIO is its
1558 return BIO_next(sc->bbio);
1563 int SSL_get_fd(const SSL *s)
1565 return SSL_get_rfd(s);
1568 int SSL_get_rfd(const SSL *s)
1573 b = SSL_get_rbio(s);
1574 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1576 BIO_get_fd(r, &ret);
1580 int SSL_get_wfd(const SSL *s)
1585 b = SSL_get_wbio(s);
1586 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1588 BIO_get_fd(r, &ret);
1592 #ifndef OPENSSL_NO_SOCK
1593 int SSL_set_fd(SSL *s, int fd)
1598 bio = BIO_new(BIO_s_socket());
1601 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1604 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1605 SSL_set_bio(s, bio, bio);
1606 #ifndef OPENSSL_NO_KTLS
1608 * The new socket is created successfully regardless of ktls_enable.
1609 * ktls_enable doesn't change any functionality of the socket, except
1610 * changing the setsockopt to enable the processing of ktls_start.
1611 * Thus, it is not a problem to call it for non-TLS sockets.
1614 #endif /* OPENSSL_NO_KTLS */
1620 int SSL_set_wfd(SSL *s, int fd)
1622 BIO *rbio = SSL_get_rbio(s);
1624 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1625 || (int)BIO_get_fd(rbio, NULL) != fd) {
1626 BIO *bio = BIO_new(BIO_s_socket());
1629 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1632 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1633 SSL_set0_wbio(s, bio);
1634 #ifndef OPENSSL_NO_KTLS
1636 * The new socket is created successfully regardless of ktls_enable.
1637 * ktls_enable doesn't change any functionality of the socket, except
1638 * changing the setsockopt to enable the processing of ktls_start.
1639 * Thus, it is not a problem to call it for non-TLS sockets.
1642 #endif /* OPENSSL_NO_KTLS */
1645 SSL_set0_wbio(s, rbio);
1650 int SSL_set_rfd(SSL *s, int fd)
1652 BIO *wbio = SSL_get_wbio(s);
1654 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1655 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1656 BIO *bio = BIO_new(BIO_s_socket());
1659 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1662 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1663 SSL_set0_rbio(s, bio);
1666 SSL_set0_rbio(s, wbio);
1673 /* return length of latest Finished message we sent, copy to 'buf' */
1674 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1677 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1682 ret = sc->s3.tmp.finish_md_len;
1685 memcpy(buf, sc->s3.tmp.finish_md, count);
1689 /* return length of latest Finished message we expected, copy to 'buf' */
1690 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1693 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1698 ret = sc->s3.tmp.peer_finish_md_len;
1701 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1705 int SSL_get_verify_mode(const SSL *s)
1707 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1712 return sc->verify_mode;
1715 int SSL_get_verify_depth(const SSL *s)
1717 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1722 return X509_VERIFY_PARAM_get_depth(sc->param);
1725 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1726 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1731 return sc->verify_callback;
1734 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1736 return ctx->verify_mode;
1739 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1741 return X509_VERIFY_PARAM_get_depth(ctx->param);
1744 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1745 return ctx->default_verify_callback;
1748 void SSL_set_verify(SSL *s, int mode,
1749 int (*callback) (int ok, X509_STORE_CTX *ctx))
1751 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1756 sc->verify_mode = mode;
1757 if (callback != NULL)
1758 sc->verify_callback = callback;
1761 void SSL_set_verify_depth(SSL *s, int depth)
1763 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1768 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1771 void SSL_set_read_ahead(SSL *s, int yes)
1773 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1774 OSSL_PARAM options[2], *opts = options;
1779 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1781 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1782 &sc->rlayer.read_ahead);
1783 *opts = OSSL_PARAM_construct_end();
1785 /* Ignore return value */
1786 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1789 int SSL_get_read_ahead(const SSL *s)
1791 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1796 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1799 int SSL_pending(const SSL *s)
1801 size_t pending = s->method->ssl_pending(s);
1804 * SSL_pending cannot work properly if read-ahead is enabled
1805 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1806 * impossible to fix since SSL_pending cannot report errors that may be
1807 * observed while scanning the new data. (Note that SSL_pending() is
1808 * often used as a boolean value, so we'd better not return -1.)
1810 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1811 * we just return INT_MAX.
1813 return pending < INT_MAX ? (int)pending : INT_MAX;
1816 int SSL_has_pending(const SSL *s)
1819 * Similar to SSL_pending() but returns a 1 to indicate that we have
1820 * processed or unprocessed data available or 0 otherwise (as opposed to the
1821 * number of bytes available). Unlike SSL_pending() this will take into
1822 * account read_ahead data. A 1 return simply indicates that we have data.
1823 * That data may not result in any application data, or we may fail to parse
1824 * the records for some reason.
1826 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1828 /* Check buffered app data if any first */
1829 if (SSL_CONNECTION_IS_DTLS(sc)) {
1833 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1834 while ((item = pqueue_next(&iter)) != NULL) {
1836 if (rdata->length > 0)
1841 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1844 return RECORD_LAYER_read_pending(&sc->rlayer);
1847 X509 *SSL_get1_peer_certificate(const SSL *s)
1849 X509 *r = SSL_get0_peer_certificate(s);
1857 X509 *SSL_get0_peer_certificate(const SSL *s)
1859 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1864 if (sc->session == NULL)
1867 return sc->session->peer;
1870 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1873 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1878 if (sc->session == NULL)
1881 r = sc->session->peer_chain;
1884 * If we are a client, cert_chain includes the peer's own certificate; if
1885 * we are a server, it does not.
1892 * Now in theory, since the calling process own 't' it should be safe to
1893 * modify. We need to be able to read f without being hassled
1895 int SSL_copy_session_id(SSL *t, const SSL *f)
1898 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1899 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1900 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1902 if (tsc == NULL || fsc == NULL)
1905 /* Do we need to do SSL locking? */
1906 if (!SSL_set_session(t, SSL_get_session(f))) {
1911 * what if we are setup for one protocol version but want to talk another
1913 if (t->method != f->method) {
1914 t->method->ssl_deinit(t);
1915 t->method = f->method;
1916 if (t->method->ssl_init(t) == 0)
1920 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1921 ssl_cert_free(tsc->cert);
1922 tsc->cert = fsc->cert;
1923 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1930 /* Fix this so it checks all the valid key/cert options */
1931 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1933 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1934 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1937 if (ctx->cert->key->privatekey == NULL) {
1938 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1941 return X509_check_private_key
1942 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1945 /* Fix this function so that it takes an optional type parameter */
1946 int SSL_check_private_key(const SSL *ssl)
1948 const SSL_CONNECTION *sc;
1950 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1951 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1954 if (sc->cert->key->x509 == NULL) {
1955 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1958 if (sc->cert->key->privatekey == NULL) {
1959 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1962 return X509_check_private_key(sc->cert->key->x509,
1963 sc->cert->key->privatekey);
1966 int SSL_waiting_for_async(SSL *s)
1968 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1979 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1981 ASYNC_WAIT_CTX *ctx;
1982 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1987 if ((ctx = sc->waitctx) == NULL)
1989 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1992 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1993 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1995 ASYNC_WAIT_CTX *ctx;
1996 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2001 if ((ctx = sc->waitctx) == NULL)
2003 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2007 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2009 ctx->async_cb = callback;
2013 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
2015 ctx->async_cb_arg = arg;
2019 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2021 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2026 sc->async_cb = callback;
2030 int SSL_set_async_callback_arg(SSL *s, void *arg)
2032 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2037 sc->async_cb_arg = arg;
2041 int SSL_get_async_status(SSL *s, int *status)
2043 ASYNC_WAIT_CTX *ctx;
2044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2049 if ((ctx = sc->waitctx) == NULL)
2051 *status = ASYNC_WAIT_CTX_get_status(ctx);
2055 int SSL_accept(SSL *s)
2057 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2058 #ifndef OPENSSL_NO_QUIC
2059 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2062 return s->method->ssl_accept(s);
2068 if (sc->handshake_func == NULL) {
2069 /* Not properly initialized yet */
2070 SSL_set_accept_state(s);
2073 return SSL_do_handshake(s);
2076 int SSL_connect(SSL *s)
2078 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2079 #ifndef OPENSSL_NO_QUIC
2080 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2083 return s->method->ssl_connect(s);
2089 if (sc->handshake_func == NULL) {
2090 /* Not properly initialized yet */
2091 SSL_set_connect_state(s);
2094 return SSL_do_handshake(s);
2097 long SSL_get_default_timeout(const SSL *s)
2099 return (long int)ossl_time2seconds(s->method->get_timeout());
2102 static int ssl_async_wait_ctx_cb(void *arg)
2104 SSL *s = (SSL *)arg;
2105 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2110 return sc->async_cb(s, sc->async_cb_arg);
2113 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2114 int (*func) (void *))
2117 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2122 if (sc->waitctx == NULL) {
2123 sc->waitctx = ASYNC_WAIT_CTX_new();
2124 if (sc->waitctx == NULL)
2126 if (sc->async_cb != NULL
2127 && !ASYNC_WAIT_CTX_set_callback
2128 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2132 sc->rwstate = SSL_NOTHING;
2133 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2134 sizeof(struct ssl_async_args))) {
2136 sc->rwstate = SSL_NOTHING;
2137 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2140 sc->rwstate = SSL_ASYNC_PAUSED;
2143 sc->rwstate = SSL_ASYNC_NO_JOBS;
2149 sc->rwstate = SSL_NOTHING;
2150 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2151 /* Shouldn't happen */
2156 static int ssl_io_intern(void *vargs)
2158 struct ssl_async_args *args;
2164 args = (struct ssl_async_args *)vargs;
2168 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2171 switch (args->type) {
2173 return args->f.func_read(s, buf, num, &sc->asyncrw);
2175 return args->f.func_write(s, buf, num, &sc->asyncrw);
2177 return args->f.func_other(s);
2182 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2184 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2185 #ifndef OPENSSL_NO_QUIC
2186 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2189 return s->method->ssl_read(s, buf, num, readbytes);
2195 if (sc->handshake_func == NULL) {
2196 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2200 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2201 sc->rwstate = SSL_NOTHING;
2205 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2206 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2207 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2211 * If we are a client and haven't received the ServerHello etc then we
2214 ossl_statem_check_finish_init(sc, 0);
2216 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2217 struct ssl_async_args args;
2223 args.type = READFUNC;
2224 args.f.func_read = s->method->ssl_read;
2226 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2227 *readbytes = sc->asyncrw;
2230 return s->method->ssl_read(s, buf, num, readbytes);
2234 int SSL_read(SSL *s, void *buf, int num)
2240 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2244 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2247 * The cast is safe here because ret should be <= INT_MAX because num is
2251 ret = (int)readbytes;
2256 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2258 int ret = ssl_read_internal(s, buf, num, readbytes);
2265 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2268 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2270 /* TODO(QUIC): This will need special handling for QUIC */
2275 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2276 return SSL_READ_EARLY_DATA_ERROR;
2279 switch (sc->early_data_state) {
2280 case SSL_EARLY_DATA_NONE:
2281 if (!SSL_in_before(s)) {
2282 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2283 return SSL_READ_EARLY_DATA_ERROR;
2287 case SSL_EARLY_DATA_ACCEPT_RETRY:
2288 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2289 ret = SSL_accept(s);
2292 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2293 return SSL_READ_EARLY_DATA_ERROR;
2297 case SSL_EARLY_DATA_READ_RETRY:
2298 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2299 sc->early_data_state = SSL_EARLY_DATA_READING;
2300 ret = SSL_read_ex(s, buf, num, readbytes);
2302 * State machine will update early_data_state to
2303 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2306 if (ret > 0 || (ret <= 0 && sc->early_data_state
2307 != SSL_EARLY_DATA_FINISHED_READING)) {
2308 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2309 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2310 : SSL_READ_EARLY_DATA_ERROR;
2313 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2316 return SSL_READ_EARLY_DATA_FINISH;
2319 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2320 return SSL_READ_EARLY_DATA_ERROR;
2324 int SSL_get_early_data_status(const SSL *s)
2326 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2328 /* TODO(QUIC): This will need special handling for QUIC */
2332 return sc->ext.early_data;
2335 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2337 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2338 #ifndef OPENSSL_NO_QUIC
2339 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2342 return s->method->ssl_peek(s, buf, num, readbytes);
2348 if (sc->handshake_func == NULL) {
2349 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2353 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2356 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2357 struct ssl_async_args args;
2363 args.type = READFUNC;
2364 args.f.func_read = s->method->ssl_peek;
2366 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2367 *readbytes = sc->asyncrw;
2370 return s->method->ssl_peek(s, buf, num, readbytes);
2374 int SSL_peek(SSL *s, void *buf, int num)
2380 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2384 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2387 * The cast is safe here because ret should be <= INT_MAX because num is
2391 ret = (int)readbytes;
2397 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2399 int ret = ssl_peek_internal(s, buf, num, readbytes);
2406 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2408 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2409 #ifndef OPENSSL_NO_QUIC
2410 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2413 return s->method->ssl_write(s, buf, num, written);
2419 if (sc->handshake_func == NULL) {
2420 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2424 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2425 sc->rwstate = SSL_NOTHING;
2426 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2430 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2431 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2432 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2433 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2436 /* If we are a client and haven't sent the Finished we better do that */
2437 ossl_statem_check_finish_init(sc, 1);
2439 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2441 struct ssl_async_args args;
2444 args.buf = (void *)buf;
2446 args.type = WRITEFUNC;
2447 args.f.func_write = s->method->ssl_write;
2449 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2450 *written = sc->asyncrw;
2453 return s->method->ssl_write(s, buf, num, written);
2457 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2460 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2465 if (sc->handshake_func == NULL) {
2466 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2470 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2471 sc->rwstate = SSL_NOTHING;
2472 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2476 if (!BIO_get_ktls_send(sc->wbio)) {
2477 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2481 /* If we have an alert to send, lets send it */
2482 if (sc->s3.alert_dispatch > 0) {
2483 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2485 /* SSLfatal() already called if appropriate */
2488 /* if it went, fall through and send more stuff */
2491 sc->rwstate = SSL_WRITING;
2492 if (BIO_flush(sc->wbio) <= 0) {
2493 if (!BIO_should_retry(sc->wbio)) {
2494 sc->rwstate = SSL_NOTHING;
2497 set_sys_error(EAGAIN);
2503 #ifdef OPENSSL_NO_KTLS
2504 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2505 "can't call ktls_sendfile(), ktls disabled");
2508 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2510 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2511 if ((get_last_sys_error() == EAGAIN) ||
2512 (get_last_sys_error() == EINTR) ||
2513 (get_last_sys_error() == EBUSY))
2514 BIO_set_retry_write(sc->wbio);
2517 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2520 sc->rwstate = SSL_NOTHING;
2525 int SSL_write(SSL *s, const void *buf, int num)
2531 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2535 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2538 * The cast is safe here because ret should be <= INT_MAX because num is
2547 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2549 int ret = ssl_write_internal(s, buf, num, written);
2556 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2558 int ret, early_data_state;
2560 uint32_t partialwrite;
2561 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2563 /* TODO(QUIC): This will need special handling for QUIC */
2567 switch (sc->early_data_state) {
2568 case SSL_EARLY_DATA_NONE:
2570 || !SSL_in_before(s)
2571 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2572 && (sc->psk_use_session_cb == NULL))) {
2573 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2578 case SSL_EARLY_DATA_CONNECT_RETRY:
2579 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2580 ret = SSL_connect(s);
2583 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2588 case SSL_EARLY_DATA_WRITE_RETRY:
2589 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2591 * We disable partial write for early data because we don't keep track
2592 * of how many bytes we've written between the SSL_write_ex() call and
2593 * the flush if the flush needs to be retried)
2595 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2596 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2597 ret = SSL_write_ex(s, buf, num, &writtmp);
2598 sc->mode |= partialwrite;
2600 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2603 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2606 case SSL_EARLY_DATA_WRITE_FLUSH:
2607 /* The buffering BIO is still in place so we need to flush it */
2608 if (statem_flush(sc) != 1)
2611 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2614 case SSL_EARLY_DATA_FINISHED_READING:
2615 case SSL_EARLY_DATA_READ_RETRY:
2616 early_data_state = sc->early_data_state;
2617 /* We are a server writing to an unauthenticated client */
2618 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2619 ret = SSL_write_ex(s, buf, num, written);
2620 /* The buffering BIO is still in place */
2622 (void)BIO_flush(sc->wbio);
2623 sc->early_data_state = early_data_state;
2627 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2632 int SSL_shutdown(SSL *s)
2635 * Note that this function behaves differently from what one might
2636 * expect. Return values are 0 for no success (yet), 1 for success; but
2637 * calling it once is usually not enough, even if blocking I/O is used
2638 * (see ssl3_shutdown).
2640 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2641 #ifndef OPENSSL_NO_QUIC
2642 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2645 return ossl_quic_conn_shutdown(qc, 0, NULL, 0);
2651 if (sc->handshake_func == NULL) {
2652 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2656 if (!SSL_in_init(s)) {
2657 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2658 struct ssl_async_args args;
2660 memset(&args, 0, sizeof(args));
2662 args.type = OTHERFUNC;
2663 args.f.func_other = s->method->ssl_shutdown;
2665 return ssl_start_async_job(s, &args, ssl_io_intern);
2667 return s->method->ssl_shutdown(s);
2670 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2675 int SSL_key_update(SSL *s, int updatetype)
2677 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2682 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2683 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2687 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2688 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2689 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2693 if (!SSL_is_init_finished(s)) {
2694 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2698 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2699 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2703 ossl_statem_set_in_init(sc, 1);
2704 sc->key_update = updatetype;
2708 int SSL_get_key_update_type(const SSL *s)
2710 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2715 return sc->key_update;
2719 * Can we accept a renegotiation request? If yes, set the flag and
2720 * return 1 if yes. If not, raise error and return 0.
2722 static int can_renegotiate(const SSL_CONNECTION *sc)
2724 if (SSL_CONNECTION_IS_TLS13(sc)) {
2725 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2729 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2730 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2737 int SSL_renegotiate(SSL *s)
2739 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2744 if (!can_renegotiate(sc))
2747 sc->renegotiate = 1;
2748 sc->new_session = 1;
2749 return s->method->ssl_renegotiate(s);
2752 int SSL_renegotiate_abbreviated(SSL *s)
2754 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2759 if (!can_renegotiate(sc))
2762 sc->renegotiate = 1;
2763 sc->new_session = 0;
2764 return s->method->ssl_renegotiate(s);
2767 int SSL_renegotiate_pending(const SSL *s)
2769 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2775 * becomes true when negotiation is requested; false again once a
2776 * handshake has finished
2778 return (sc->renegotiate != 0);
2781 int SSL_new_session_ticket(SSL *s)
2783 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2788 /* If we are in init because we're sending tickets, okay to send more. */
2789 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2790 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2791 || !SSL_CONNECTION_IS_TLS13(sc))
2793 sc->ext.extra_tickets_expected++;
2794 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2795 ossl_statem_set_in_init(sc, 1);
2799 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2802 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2804 /* TODO(QUIC): Special handling for some ctrls will be needed */
2809 case SSL_CTRL_GET_READ_AHEAD:
2810 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2811 case SSL_CTRL_SET_READ_AHEAD:
2812 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2813 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2816 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2817 sc->msg_callback_arg = parg;
2822 OSSL_PARAM options[2], *opts = options;
2826 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2828 *opts = OSSL_PARAM_construct_end();
2830 /* Ignore return value */
2831 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2835 case SSL_CTRL_CLEAR_MODE:
2836 return (sc->mode &= ~larg);
2837 case SSL_CTRL_GET_MAX_CERT_LIST:
2838 return (long)sc->max_cert_list;
2839 case SSL_CTRL_SET_MAX_CERT_LIST:
2842 l = (long)sc->max_cert_list;
2843 sc->max_cert_list = (size_t)larg;
2845 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2846 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2848 #ifndef OPENSSL_NO_KTLS
2849 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2851 #endif /* OPENSSL_NO_KTLS */
2852 sc->max_send_fragment = larg;
2853 if (sc->max_send_fragment < sc->split_send_fragment)
2854 sc->split_send_fragment = sc->max_send_fragment;
2855 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2857 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2858 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2860 sc->split_send_fragment = larg;
2862 case SSL_CTRL_SET_MAX_PIPELINES:
2863 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2865 sc->max_pipelines = larg;
2866 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2867 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2869 case SSL_CTRL_GET_RI_SUPPORT:
2870 return sc->s3.send_connection_binding;
2871 case SSL_CTRL_SET_RETRY_VERIFY:
2872 sc->rwstate = SSL_RETRY_VERIFY;
2874 case SSL_CTRL_CERT_FLAGS:
2875 return (sc->cert->cert_flags |= larg);
2876 case SSL_CTRL_CLEAR_CERT_FLAGS:
2877 return (sc->cert->cert_flags &= ~larg);
2879 case SSL_CTRL_GET_RAW_CIPHERLIST:
2881 if (sc->s3.tmp.ciphers_raw == NULL)
2883 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2884 return (int)sc->s3.tmp.ciphers_rawlen;
2886 return TLS_CIPHER_LEN;
2888 case SSL_CTRL_GET_EXTMS_SUPPORT:
2889 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2891 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2895 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2896 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2897 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2898 &sc->min_proto_version);
2899 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2900 return sc->min_proto_version;
2901 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2902 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2903 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2904 &sc->max_proto_version);
2905 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2906 return sc->max_proto_version;
2908 return s->method->ssl_ctrl(s, cmd, larg, parg);
2912 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2914 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2920 case SSL_CTRL_SET_MSG_CALLBACK:
2921 sc->msg_callback = (void (*)
2922 (int write_p, int version, int content_type,
2923 const void *buf, size_t len, SSL *ssl,
2928 return s->method->ssl_callback_ctrl(s, cmd, fp);
2932 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2934 return ctx->sessions;
2937 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2941 if (ssl_tsan_lock(ctx)) {
2942 res = tsan_load(stat);
2943 ssl_tsan_unlock(ctx);
2948 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2951 /* For some cases with ctx == NULL perform syntax checks */
2954 case SSL_CTRL_SET_GROUPS_LIST:
2955 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2956 case SSL_CTRL_SET_SIGALGS_LIST:
2957 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2958 return tls1_set_sigalgs_list(NULL, parg, 0);
2965 case SSL_CTRL_GET_READ_AHEAD:
2966 return ctx->read_ahead;
2967 case SSL_CTRL_SET_READ_AHEAD:
2968 l = ctx->read_ahead;
2969 ctx->read_ahead = larg;
2972 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2973 ctx->msg_callback_arg = parg;
2976 case SSL_CTRL_GET_MAX_CERT_LIST:
2977 return (long)ctx->max_cert_list;
2978 case SSL_CTRL_SET_MAX_CERT_LIST:
2981 l = (long)ctx->max_cert_list;
2982 ctx->max_cert_list = (size_t)larg;
2985 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2988 l = (long)ctx->session_cache_size;
2989 ctx->session_cache_size = (size_t)larg;
2991 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2992 return (long)ctx->session_cache_size;
2993 case SSL_CTRL_SET_SESS_CACHE_MODE:
2994 l = ctx->session_cache_mode;
2995 ctx->session_cache_mode = larg;
2997 case SSL_CTRL_GET_SESS_CACHE_MODE:
2998 return ctx->session_cache_mode;
3000 case SSL_CTRL_SESS_NUMBER:
3001 return lh_SSL_SESSION_num_items(ctx->sessions);
3002 case SSL_CTRL_SESS_CONNECT:
3003 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
3004 case SSL_CTRL_SESS_CONNECT_GOOD:
3005 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
3006 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3007 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3008 case SSL_CTRL_SESS_ACCEPT:
3009 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3010 case SSL_CTRL_SESS_ACCEPT_GOOD:
3011 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3012 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3013 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3014 case SSL_CTRL_SESS_HIT:
3015 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3016 case SSL_CTRL_SESS_CB_HIT:
3017 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3018 case SSL_CTRL_SESS_MISSES:
3019 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3020 case SSL_CTRL_SESS_TIMEOUTS:
3021 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3022 case SSL_CTRL_SESS_CACHE_FULL:
3023 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3025 return (ctx->mode |= larg);
3026 case SSL_CTRL_CLEAR_MODE:
3027 return (ctx->mode &= ~larg);
3028 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3029 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
3031 ctx->max_send_fragment = larg;
3032 if (ctx->max_send_fragment < ctx->split_send_fragment)
3033 ctx->split_send_fragment = ctx->max_send_fragment;
3035 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3036 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
3038 ctx->split_send_fragment = larg;
3040 case SSL_CTRL_SET_MAX_PIPELINES:
3041 if (larg < 1 || larg > SSL_MAX_PIPELINES)
3043 ctx->max_pipelines = larg;
3045 case SSL_CTRL_CERT_FLAGS:
3046 return (ctx->cert->cert_flags |= larg);
3047 case SSL_CTRL_CLEAR_CERT_FLAGS:
3048 return (ctx->cert->cert_flags &= ~larg);
3049 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3050 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3051 && ssl_set_version_bound(ctx->method->version, (int)larg,
3052 &ctx->min_proto_version);
3053 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3054 return ctx->min_proto_version;
3055 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3056 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3057 && ssl_set_version_bound(ctx->method->version, (int)larg,
3058 &ctx->max_proto_version);
3059 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3060 return ctx->max_proto_version;
3062 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3066 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3069 case SSL_CTRL_SET_MSG_CALLBACK:
3070 ctx->msg_callback = (void (*)
3071 (int write_p, int version, int content_type,
3072 const void *buf, size_t len, SSL *ssl,
3077 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3081 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3090 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3091 const SSL_CIPHER *const *bp)
3093 if ((*ap)->id > (*bp)->id)
3095 if ((*ap)->id < (*bp)->id)
3101 * return a STACK of the ciphers available for the SSL and in order of
3104 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3106 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3109 if (sc->cipher_list != NULL) {
3110 return sc->cipher_list;
3111 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3112 return s->ctx->cipher_list;
3118 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3120 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3122 if (sc == NULL || !sc->server)
3124 return sc->peer_ciphers;
3127 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3129 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3131 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3136 ciphers = SSL_get_ciphers(s);
3139 if (!ssl_set_client_disabled(sc))
3141 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3142 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3143 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3145 sk = sk_SSL_CIPHER_new_null();
3148 if (!sk_SSL_CIPHER_push(sk, c)) {
3149 sk_SSL_CIPHER_free(sk);
3157 /** return a STACK of the ciphers available for the SSL and in order of
3159 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3162 if (s->cipher_list_by_id != NULL)
3163 return s->cipher_list_by_id;
3164 else if (s->ssl.ctx != NULL
3165 && s->ssl.ctx->cipher_list_by_id != NULL)
3166 return s->ssl.ctx->cipher_list_by_id;
3171 /** The old interface to get the same thing as SSL_get_ciphers() */
3172 const char *SSL_get_cipher_list(const SSL *s, int n)
3174 const SSL_CIPHER *c;
3175 STACK_OF(SSL_CIPHER) *sk;
3179 sk = SSL_get_ciphers(s);
3180 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3182 c = sk_SSL_CIPHER_value(sk, n);
3188 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3190 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3193 return ctx->cipher_list;
3198 * Distinguish between ciphers controlled by set_ciphersuite() and
3199 * set_cipher_list() when counting.
3201 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3204 const SSL_CIPHER *c;
3208 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3209 c = sk_SSL_CIPHER_value(sk, i);
3210 if (c->min_tls >= TLS1_3_VERSION)
3217 /** specify the ciphers to be used by default by the SSL_CTX */
3218 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3220 STACK_OF(SSL_CIPHER) *sk;
3222 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3223 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3226 * ssl_create_cipher_list may return an empty stack if it was unable to
3227 * find a cipher matching the given rule string (for example if the rule
3228 * string specifies a cipher which has been disabled). This is not an
3229 * error as far as ssl_create_cipher_list is concerned, and hence
3230 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3234 else if (cipher_list_tls12_num(sk) == 0) {
3235 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3241 /** specify the ciphers to be used by the SSL */
3242 int SSL_set_cipher_list(SSL *s, const char *str)
3244 STACK_OF(SSL_CIPHER) *sk;
3245 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3250 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3251 &sc->cipher_list, &sc->cipher_list_by_id, str,
3253 /* see comment in SSL_CTX_set_cipher_list */
3256 else if (cipher_list_tls12_num(sk) == 0) {
3257 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3263 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3266 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3267 const SSL_CIPHER *c;
3269 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3275 || sc->peer_ciphers == NULL
3280 clntsk = sc->peer_ciphers;
3281 srvrsk = SSL_get_ciphers(s);
3282 if (clntsk == NULL || srvrsk == NULL)
3285 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3288 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3291 c = sk_SSL_CIPHER_value(clntsk, i);
3292 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3295 n = strlen(c->name);
3312 * Return the requested servername (SNI) value. Note that the behaviour varies
3314 * - whether this is called by the client or the server,
3315 * - if we are before or during/after the handshake,
3316 * - if a resumption or normal handshake is being attempted/has occurred
3317 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3319 * Note that only the host_name type is defined (RFC 3546).
3321 const char *SSL_get_servername(const SSL *s, const int type)
3323 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3330 * If we don't know if we are the client or the server yet then we assume
3333 server = sc->handshake_func == NULL ? 0 : sc->server;
3335 if (type != TLSEXT_NAMETYPE_host_name)
3341 * In TLSv1.3 on the server SNI is not associated with the session
3342 * but in TLSv1.2 or below it is.
3344 * Before the handshake:
3347 * During/after the handshake (TLSv1.2 or below resumption occurred):
3348 * - If a servername was accepted by the server in the original
3349 * handshake then it will return that servername, or NULL otherwise.
3351 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3352 * - The function will return the servername requested by the client in
3353 * this handshake or NULL if none was requested.
3355 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3356 return sc->session->ext.hostname;
3361 * Before the handshake:
3362 * - If a servername has been set via a call to
3363 * SSL_set_tlsext_host_name() then it will return that servername
3364 * - If one has not been set, but a TLSv1.2 resumption is being
3365 * attempted and the session from the original handshake had a
3366 * servername accepted by the server then it will return that
3368 * - Otherwise it returns NULL
3370 * During/after the handshake (TLSv1.2 or below resumption occurred):
3371 * - If the session from the original handshake had a servername accepted
3372 * by the server then it will return that servername.
3373 * - Otherwise it returns the servername set via
3374 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3376 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3377 * - It will return the servername set via SSL_set_tlsext_host_name()
3378 * (or NULL if it was not called).
3380 if (SSL_in_before(s)) {
3381 if (sc->ext.hostname == NULL
3382 && sc->session != NULL
3383 && sc->session->ssl_version != TLS1_3_VERSION)
3384 return sc->session->ext.hostname;
3386 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3387 && sc->session->ext.hostname != NULL)
3388 return sc->session->ext.hostname;
3392 return sc->ext.hostname;
3395 int SSL_get_servername_type(const SSL *s)
3397 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3398 return TLSEXT_NAMETYPE_host_name;
3403 * SSL_select_next_proto implements the standard protocol selection. It is
3404 * expected that this function is called from the callback set by
3405 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3406 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3407 * not included in the length. A byte string of length 0 is invalid. No byte
3408 * string may be truncated. The current, but experimental algorithm for
3409 * selecting the protocol is: 1) If the server doesn't support NPN then this
3410 * is indicated to the callback. In this case, the client application has to
3411 * abort the connection or have a default application level protocol. 2) If
3412 * the server supports NPN, but advertises an empty list then the client
3413 * selects the first protocol in its list, but indicates via the API that this
3414 * fallback case was enacted. 3) Otherwise, the client finds the first
3415 * protocol in the server's list that it supports and selects this protocol.
3416 * This is because it's assumed that the server has better information about
3417 * which protocol a client should use. 4) If the client doesn't support any
3418 * of the server's advertised protocols, then this is treated the same as
3419 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3420 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3422 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3423 const unsigned char *server,
3424 unsigned int server_len,
3425 const unsigned char *client, unsigned int client_len)
3428 const unsigned char *result;
3429 int status = OPENSSL_NPN_UNSUPPORTED;
3432 * For each protocol in server preference order, see if we support it.
3434 for (i = 0; i < server_len;) {
3435 for (j = 0; j < client_len;) {
3436 if (server[i] == client[j] &&
3437 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3438 /* We found a match */
3439 result = &server[i];
3440 status = OPENSSL_NPN_NEGOTIATED;
3450 /* There's no overlap between our protocols and the server's list. */
3452 status = OPENSSL_NPN_NO_OVERLAP;
3455 *out = (unsigned char *)result + 1;
3456 *outlen = result[0];
3460 #ifndef OPENSSL_NO_NEXTPROTONEG
3462 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3463 * client's requested protocol for this connection and returns 0. If the
3464 * client didn't request any protocol, then *data is set to NULL. Note that
3465 * the client can request any protocol it chooses. The value returned from
3466 * this function need not be a member of the list of supported protocols
3467 * provided by the callback.
3469 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3472 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3475 /* We have no other way to indicate error */
3481 *data = sc->ext.npn;
3482 if (*data == NULL) {
3485 *len = (unsigned int)sc->ext.npn_len;
3490 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3491 * a TLS server needs a list of supported protocols for Next Protocol
3492 * Negotiation. The returned list must be in wire format. The list is
3493 * returned by setting |out| to point to it and |outlen| to its length. This
3494 * memory will not be modified, but one should assume that the SSL* keeps a
3495 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3496 * wishes to advertise. Otherwise, no such extension will be included in the
3499 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3500 SSL_CTX_npn_advertised_cb_func cb,
3503 ctx->ext.npn_advertised_cb = cb;
3504 ctx->ext.npn_advertised_cb_arg = arg;
3508 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3509 * client needs to select a protocol from the server's provided list. |out|
3510 * must be set to point to the selected protocol (which may be within |in|).
3511 * The length of the protocol name must be written into |outlen|. The
3512 * server's advertised protocols are provided in |in| and |inlen|. The
3513 * callback can assume that |in| is syntactically valid. The client must
3514 * select a protocol. It is fatal to the connection if this callback returns
3515 * a value other than SSL_TLSEXT_ERR_OK.
3517 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3518 SSL_CTX_npn_select_cb_func cb,
3521 ctx->ext.npn_select_cb = cb;
3522 ctx->ext.npn_select_cb_arg = arg;
3526 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3530 if (protos_len < 2 || protos == NULL)
3533 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3534 if (protos[idx] == 0)
3537 return idx == protos_len;
3540 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3541 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3542 * length-prefixed strings). Returns 0 on success.
3544 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3545 unsigned int protos_len)
3547 unsigned char *alpn;
3549 if (protos_len == 0 || protos == NULL) {
3550 OPENSSL_free(ctx->ext.alpn);
3551 ctx->ext.alpn = NULL;
3552 ctx->ext.alpn_len = 0;
3555 /* Not valid per RFC */
3556 if (!alpn_value_ok(protos, protos_len))
3559 alpn = OPENSSL_memdup(protos, protos_len);
3562 OPENSSL_free(ctx->ext.alpn);
3563 ctx->ext.alpn = alpn;
3564 ctx->ext.alpn_len = protos_len;
3570 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3571 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3572 * length-prefixed strings). Returns 0 on success.
3574 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3575 unsigned int protos_len)
3577 unsigned char *alpn;
3578 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3583 if (protos_len == 0 || protos == NULL) {
3584 OPENSSL_free(sc->ext.alpn);
3585 sc->ext.alpn = NULL;
3586 sc->ext.alpn_len = 0;
3589 /* Not valid per RFC */
3590 if (!alpn_value_ok(protos, protos_len))
3593 alpn = OPENSSL_memdup(protos, protos_len);
3596 OPENSSL_free(sc->ext.alpn);
3597 sc->ext.alpn = alpn;
3598 sc->ext.alpn_len = protos_len;
3604 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3605 * called during ClientHello processing in order to select an ALPN protocol
3606 * from the client's list of offered protocols.
3608 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3609 SSL_CTX_alpn_select_cb_func cb,
3612 ctx->ext.alpn_select_cb = cb;
3613 ctx->ext.alpn_select_cb_arg = arg;
3617 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3618 * On return it sets |*data| to point to |*len| bytes of protocol name
3619 * (not including the leading length-prefix byte). If the server didn't
3620 * respond with a negotiated protocol then |*len| will be zero.
3622 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3625 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3628 /* We have no other way to indicate error */
3634 *data = sc->s3.alpn_selected;
3638 *len = (unsigned int)sc->s3.alpn_selected_len;
3641 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3642 const char *label, size_t llen,
3643 const unsigned char *context, size_t contextlen,
3646 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3651 if (sc->session == NULL
3652 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3655 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3657 contextlen, use_context);
3660 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3661 const char *label, size_t llen,
3662 const unsigned char *context,
3665 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3670 if (sc->version != TLS1_3_VERSION)
3673 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3674 context, contextlen);
3677 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3679 const unsigned char *session_id = a->session_id;
3681 unsigned char tmp_storage[4];
3683 if (a->session_id_length < sizeof(tmp_storage)) {
3684 memset(tmp_storage, 0, sizeof(tmp_storage));
3685 memcpy(tmp_storage, a->session_id, a->session_id_length);
3686 session_id = tmp_storage;
3690 ((unsigned long)session_id[0]) |
3691 ((unsigned long)session_id[1] << 8L) |
3692 ((unsigned long)session_id[2] << 16L) |
3693 ((unsigned long)session_id[3] << 24L);
3698 * NB: If this function (or indeed the hash function which uses a sort of
3699 * coarser function than this one) is changed, ensure
3700 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3701 * being able to construct an SSL_SESSION that will collide with any existing
3702 * session with a matching session ID.
3704 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3706 if (a->ssl_version != b->ssl_version)
3708 if (a->session_id_length != b->session_id_length)
3710 return memcmp(a->session_id, b->session_id, a->session_id_length);
3714 * These wrapper functions should remain rather than redeclaring
3715 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3716 * variable. The reason is that the functions aren't static, they're exposed
3720 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3721 const SSL_METHOD *meth)
3723 SSL_CTX *ret = NULL;
3724 #ifndef OPENSSL_NO_COMP_ALG
3729 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3733 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3736 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3737 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3740 ret = OPENSSL_zalloc(sizeof(*ret));
3744 /* Init the reference counting before any call to SSL_CTX_free */
3745 ret->references = 1;
3746 ret->lock = CRYPTO_THREAD_lock_new();
3747 if (ret->lock == NULL) {
3748 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3752 #ifdef TSAN_REQUIRES_LOCKING
3753 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3754 if (ret->tsan_lock == NULL) {
3755 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3760 ret->libctx = libctx;
3761 if (propq != NULL) {
3762 ret->propq = OPENSSL_strdup(propq);
3763 if (ret->propq == NULL)
3768 ret->min_proto_version = 0;
3769 ret->max_proto_version = 0;
3770 ret->mode = SSL_MODE_AUTO_RETRY;
3771 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3772 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3773 /* We take the system default. */
3774 ret->session_timeout = meth->get_timeout();
3775 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3776 ret->verify_mode = SSL_VERIFY_NONE;
3777 if ((ret->cert = ssl_cert_new()) == NULL) {
3778 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3782 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3783 if (ret->sessions == NULL) {
3784 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3787 ret->cert_store = X509_STORE_new();
3788 if (ret->cert_store == NULL) {
3789 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3792 #ifndef OPENSSL_NO_CT
3793 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3794 if (ret->ctlog_store == NULL) {
3795 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3800 /* initialize cipher/digest methods table */
3801 if (!ssl_load_ciphers(ret))
3803 /* initialise sig algs */
3804 if (!ssl_setup_sig_algs(ret))
3807 if (!ssl_load_groups(ret))
3810 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3811 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3815 if (!ssl_create_cipher_list(ret,
3816 ret->tls13_ciphersuites,
3817 &ret->cipher_list, &ret->cipher_list_by_id,
3818 OSSL_default_cipher_list(), ret->cert)
3819 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3820 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3824 ret->param = X509_VERIFY_PARAM_new();
3825 if (ret->param == NULL) {
3826 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3831 * If these aren't available from the provider we'll get NULL returns.
3832 * That's fine but will cause errors later if SSLv3 is negotiated
3834 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3835 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3837 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3838 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3842 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3843 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3847 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3848 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3852 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3855 /* No compression for DTLS */
3856 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3857 ret->comp_methods = SSL_COMP_get_compression_methods();
3859 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3860 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3862 /* Setup RFC5077 ticket keys */
3863 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3864 sizeof(ret->ext.tick_key_name), 0) <= 0)
3865 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3866 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3867 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3868 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3869 ret->options |= SSL_OP_NO_TICKET;
3871 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3872 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3873 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3877 #ifndef OPENSSL_NO_SRP
3878 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3879 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3883 #ifndef OPENSSL_NO_ENGINE
3884 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3885 # define eng_strx(x) #x
3886 # define eng_str(x) eng_strx(x)
3887 /* Use specific client engine automatically... ignore errors */
3890 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3893 ENGINE_load_builtin_engines();
3894 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3896 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3902 #ifndef OPENSSL_NO_COMP_ALG
3904 * Set the default order: brotli, zlib, zstd
3905 * Including only those enabled algorithms
3907 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3909 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3910 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3911 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3912 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3913 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3914 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3917 * Disable compression by default to prevent CRIME. Applications can
3918 * re-enable compression by configuring
3919 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3920 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3921 * middlebox compatibility by default. This may be disabled by default in
3922 * a later OpenSSL version.
3924 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3926 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3929 * We cannot usefully set a default max_early_data here (which gets
3930 * propagated in SSL_new(), for the following reason: setting the
3931 * SSL field causes tls_construct_stoc_early_data() to tell the
3932 * client that early data will be accepted when constructing a TLS 1.3
3933 * session ticket, and the client will accordingly send us early data
3934 * when using that ticket (if the client has early data to send).
3935 * However, in order for the early data to actually be consumed by
3936 * the application, the application must also have calls to
3937 * SSL_read_early_data(); otherwise we'll just skip past the early data
3938 * and ignore it. So, since the application must add calls to
3939 * SSL_read_early_data(), we also require them to add
3940 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3941 * eliminating the bandwidth-wasting early data in the case described
3944 ret->max_early_data = 0;
3947 * Default recv_max_early_data is a fully loaded single record. Could be
3948 * split across multiple records in practice. We set this differently to
3949 * max_early_data so that, in the default case, we do not advertise any
3950 * support for early_data, but if a client were to send us some (e.g.
3951 * because of an old, stale ticket) then we will tolerate it and skip over
3954 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3956 /* By default we send two session tickets automatically in TLSv1.3 */
3957 ret->num_tickets = 2;
3959 ssl_ctx_system_config(ret);
3967 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3969 return SSL_CTX_new_ex(NULL, NULL, meth);
3972 int SSL_CTX_up_ref(SSL_CTX *ctx)
3976 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3979 REF_PRINT_COUNT("SSL_CTX", ctx);
3980 REF_ASSERT_ISNT(i < 2);
3981 return ((i > 1) ? 1 : 0);
3984 void SSL_CTX_free(SSL_CTX *a)
3992 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3993 REF_PRINT_COUNT("SSL_CTX", a);
3996 REF_ASSERT_ISNT(i < 0);
3998 X509_VERIFY_PARAM_free(a->param);
3999 dane_ctx_final(&a->dane);
4002 * Free internal session cache. However: the remove_cb() may reference
4003 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
4004 * after the sessions were flushed.
4005 * As the ex_data handling routines might also touch the session cache,
4006 * the most secure solution seems to be: empty (flush) the cache, then
4007 * free ex_data, then finally free the cache.
4008 * (See ticket [openssl.org #212].)
4010 if (a->sessions != NULL)
4011 SSL_CTX_flush_sessions(a, 0);
4013 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4014 lh_SSL_SESSION_free(a->sessions);
4015 X509_STORE_free(a->cert_store);
4016 #ifndef OPENSSL_NO_CT
4017 CTLOG_STORE_free(a->ctlog_store);
4019 sk_SSL_CIPHER_free(a->cipher_list);
4020 sk_SSL_CIPHER_free(a->cipher_list_by_id);
4021 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4022 ssl_cert_free(a->cert);
4023 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4024 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4025 OSSL_STACK_OF_X509_free(a->extra_certs);
4026 a->comp_methods = NULL;
4027 #ifndef OPENSSL_NO_SRTP
4028 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4030 #ifndef OPENSSL_NO_SRP
4031 ssl_ctx_srp_ctx_free_intern(a);
4033 #ifndef OPENSSL_NO_ENGINE
4034 tls_engine_finish(a->client_cert_engine);
4037 OPENSSL_free(a->ext.ecpointformats);
4038 OPENSSL_free(a->ext.supportedgroups);
4039 OPENSSL_free(a->ext.supported_groups_default);
4040 OPENSSL_free(a->ext.alpn);
4041 OPENSSL_secure_free(a->ext.secure);
4043 ssl_evp_md_free(a->md5);
4044 ssl_evp_md_free(a->sha1);
4046 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4047 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4048 for (j = 0; j < SSL_MD_NUM_IDX; j++)
4049 ssl_evp_md_free(a->ssl_digest_methods[j]);
4050 for (j = 0; j < a->group_list_len; j++) {
4051 OPENSSL_free(a->group_list[j].tlsname);
4052 OPENSSL_free(a->group_list[j].realname);
4053 OPENSSL_free(a->group_list[j].algorithm);
4055 OPENSSL_free(a->group_list);
4057 OPENSSL_free(a->sigalg_lookup_cache);
4059 CRYPTO_THREAD_lock_free(a->lock);
4060 #ifdef TSAN_REQUIRES_LOCKING
4061 CRYPTO_THREAD_lock_free(a->tsan_lock);
4064 OPENSSL_free(a->propq);
4069 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4071 ctx->default_passwd_callback = cb;
4074 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4076 ctx->default_passwd_callback_userdata = u;
4079 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4081 return ctx->default_passwd_callback;
4084 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4086 return ctx->default_passwd_callback_userdata;
4089 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4091 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4096 sc->default_passwd_callback = cb;
4099 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4101 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4106 sc->default_passwd_callback_userdata = u;
4109 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4111 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4116 return sc->default_passwd_callback;
4119 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4121 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4126 return sc->default_passwd_callback_userdata;
4129 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4130 int (*cb) (X509_STORE_CTX *, void *),
4133 ctx->app_verify_callback = cb;
4134 ctx->app_verify_arg = arg;
4137 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4138 int (*cb) (int, X509_STORE_CTX *))
4140 ctx->verify_mode = mode;
4141 ctx->default_verify_callback = cb;
4144 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4146 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4149 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4151 ssl_cert_set_cert_cb(c->cert, cb, arg);
4154 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4156 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4161 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4164 void ssl_set_masks(SSL_CONNECTION *s)
4167 uint32_t *pvalid = s->s3.tmp.valid_flags;
4168 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4169 unsigned long mask_k, mask_a;
4170 int have_ecc_cert, ecdsa_ok;
4175 dh_tmp = (c->dh_tmp != NULL
4176 || c->dh_tmp_cb != NULL
4179 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4180 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4181 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4182 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4186 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4187 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4189 #ifndef OPENSSL_NO_GOST
4190 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4191 mask_k |= SSL_kGOST | SSL_kGOST18;
4192 mask_a |= SSL_aGOST12;
4194 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4195 mask_k |= SSL_kGOST | SSL_kGOST18;
4196 mask_a |= SSL_aGOST12;
4198 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4199 mask_k |= SSL_kGOST;
4200 mask_a |= SSL_aGOST01;
4211 * If we only have an RSA-PSS certificate allow RSA authentication
4212 * if TLS 1.2 and peer supports it.
4215 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4216 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4217 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4224 mask_a |= SSL_aNULL;
4227 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4228 * depending on the key usage extension.
4230 if (have_ecc_cert) {
4232 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4233 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4234 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4237 mask_a |= SSL_aECDSA;
4239 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4240 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4241 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4242 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4243 mask_a |= SSL_aECDSA;
4245 /* Allow Ed448 for TLS 1.2 if peer supports it */
4246 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4247 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4248 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4249 mask_a |= SSL_aECDSA;
4251 mask_k |= SSL_kECDHE;
4253 #ifndef OPENSSL_NO_PSK
4256 if (mask_k & SSL_kRSA)
4257 mask_k |= SSL_kRSAPSK;
4258 if (mask_k & SSL_kDHE)
4259 mask_k |= SSL_kDHEPSK;
4260 if (mask_k & SSL_kECDHE)
4261 mask_k |= SSL_kECDHEPSK;
4264 s->s3.tmp.mask_k = mask_k;
4265 s->s3.tmp.mask_a = mask_a;
4268 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4270 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4271 /* key usage, if present, must allow signing */
4272 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4273 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4277 return 1; /* all checks are ok */
4280 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4281 const unsigned char **serverinfo,
4282 size_t *serverinfo_length)
4284 CERT_PKEY *cpk = s->s3.tmp.cert;
4285 *serverinfo_length = 0;
4287 if (cpk == NULL || cpk->serverinfo == NULL)
4290 *serverinfo = cpk->serverinfo;
4291 *serverinfo_length = cpk->serverinfo_length;
4295 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4300 * If the session_id_length is 0, we are not supposed to cache it, and it
4301 * would be rather hard to do anyway :-)
4303 if (s->session->session_id_length == 0)
4307 * If sid_ctx_length is 0 there is no specific application context
4308 * associated with this session, so when we try to resume it and
4309 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4310 * indication that this is actually a session for the proper application
4311 * context, and the *handshake* will fail, not just the resumption attempt.
4312 * Do not cache (on the server) these sessions that are not resumable
4313 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4315 if (s->server && s->session->sid_ctx_length == 0
4316 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4319 i = s->session_ctx->session_cache_mode;
4321 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4323 * Add the session to the internal cache. In server side TLSv1.3 we
4324 * normally don't do this because by default it's a full stateless ticket
4325 * with only a dummy session id so there is no reason to cache it,
4327 * - we are doing early_data, in which case we cache so that we can
4329 * - the application has set a remove_session_cb so needs to know about
4330 * session timeout events
4331 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4333 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4334 && (!SSL_CONNECTION_IS_TLS13(s)
4336 || (s->max_early_data > 0
4337 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4338 || s->session_ctx->remove_session_cb != NULL
4339 || (s->options & SSL_OP_NO_TICKET) != 0))
4340 SSL_CTX_add_session(s->session_ctx, s->session);
4343 * Add the session to the external cache. We do this even in server side
4344 * TLSv1.3 without early data because some applications just want to
4345 * know about the creation of a session and aren't doing a full cache.
4347 if (s->session_ctx->new_session_cb != NULL) {
4348 SSL_SESSION_up_ref(s->session);
4349 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4351 SSL_SESSION_free(s->session);
4355 /* auto flush every 255 connections */
4356 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4357 TSAN_QUALIFIER int *stat;
4359 if (mode & SSL_SESS_CACHE_CLIENT)
4360 stat = &s->session_ctx->stats.sess_connect_good;
4362 stat = &s->session_ctx->stats.sess_accept_good;
4363 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4364 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4368 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4373 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4378 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4381 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4383 /* TODO(QUIC): Do we want this for QUIC? */
4385 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4388 if (s->method != meth) {
4389 const SSL_METHOD *sm = s->method;
4390 int (*hf) (SSL *) = sc->handshake_func;
4392 if (sm->version == meth->version)
4397 ret = s->method->ssl_init(s);
4400 if (hf == sm->ssl_connect)
4401 sc->handshake_func = meth->ssl_connect;
4402 else if (hf == sm->ssl_accept)
4403 sc->handshake_func = meth->ssl_accept;
4408 int SSL_get_error(const SSL *s, int i)
4413 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4414 #ifndef OPENSSL_NO_QUIC
4415 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
4419 return SSL_ERROR_NONE;
4421 #ifndef OPENSSL_NO_QUIC
4423 reason = ossl_quic_get_error(qc, i);
4424 if (reason != SSL_ERROR_NONE)
4430 return SSL_ERROR_SSL;
4433 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4434 * where we do encode the error
4436 if ((l = ERR_peek_error()) != 0) {
4437 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4438 return SSL_ERROR_SYSCALL;
4440 return SSL_ERROR_SSL;
4443 #ifndef OPENSSL_NO_QUIC
4447 if (SSL_want_read(s)) {
4448 bio = SSL_get_rbio(s);
4449 if (BIO_should_read(bio))
4450 return SSL_ERROR_WANT_READ;
4451 else if (BIO_should_write(bio))
4453 * This one doesn't make too much sense ... We never try to
4454 * write to the rbio, and an application program where rbio and
4455 * wbio are separate couldn't even know what it should wait for.
4456 * However if we ever set s->rwstate incorrectly (so that we
4457 * have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4458 * and wbio *are* the same, this test works around that bug; so
4459 * it might be safer to keep it.
4461 return SSL_ERROR_WANT_WRITE;
4462 else if (BIO_should_io_special(bio)) {
4463 reason = BIO_get_retry_reason(bio);
4464 if (reason == BIO_RR_CONNECT)
4465 return SSL_ERROR_WANT_CONNECT;
4466 else if (reason == BIO_RR_ACCEPT)
4467 return SSL_ERROR_WANT_ACCEPT;
4469 return SSL_ERROR_SYSCALL; /* unknown */
4473 if (SSL_want_write(s)) {
4475 * Access wbio directly - in order to use the buffered bio if
4479 if (BIO_should_write(bio))
4480 return SSL_ERROR_WANT_WRITE;
4481 else if (BIO_should_read(bio))
4483 * See above (SSL_want_read(s) with BIO_should_write(bio))
4485 return SSL_ERROR_WANT_READ;
4486 else if (BIO_should_io_special(bio)) {
4487 reason = BIO_get_retry_reason(bio);
4488 if (reason == BIO_RR_CONNECT)
4489 return SSL_ERROR_WANT_CONNECT;
4490 else if (reason == BIO_RR_ACCEPT)
4491 return SSL_ERROR_WANT_ACCEPT;
4493 return SSL_ERROR_SYSCALL;
4498 if (SSL_want_x509_lookup(s))
4499 return SSL_ERROR_WANT_X509_LOOKUP;
4500 if (SSL_want_retry_verify(s))
4501 return SSL_ERROR_WANT_RETRY_VERIFY;
4502 if (SSL_want_async(s))
4503 return SSL_ERROR_WANT_ASYNC;
4504 if (SSL_want_async_job(s))
4505 return SSL_ERROR_WANT_ASYNC_JOB;
4506 if (SSL_want_client_hello_cb(s))
4507 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4509 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4510 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4511 return SSL_ERROR_ZERO_RETURN;
4513 return SSL_ERROR_SYSCALL;
4516 static int ssl_do_handshake_intern(void *vargs)
4518 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4520 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4525 return sc->handshake_func(s);
4528 int SSL_do_handshake(SSL *s)
4531 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4532 #ifndef OPENSSL_NO_QUIC
4533 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4536 return ossl_quic_do_handshake(qc);
4539 if (sc->handshake_func == NULL) {
4540 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4544 ossl_statem_check_finish_init(sc, -1);
4546 s->method->ssl_renegotiate_check(s, 0);
4548 if (SSL_in_init(s) || SSL_in_before(s)) {
4549 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4550 struct ssl_async_args args;
4552 memset(&args, 0, sizeof(args));
4555 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4557 ret = sc->handshake_func(s);
4563 void SSL_set_accept_state(SSL *s)
4565 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4566 #ifndef OPENSSL_NO_QUIC
4567 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4570 ossl_quic_set_accept_state(qc);
4577 ossl_statem_clear(sc);
4578 sc->handshake_func = s->method->ssl_accept;
4579 /* Ignore return value. Its a void public API function */
4580 clear_record_layer(sc);
4583 void SSL_set_connect_state(SSL *s)
4585 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4586 #ifndef OPENSSL_NO_QUIC
4587 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4590 ossl_quic_set_connect_state(qc);
4597 ossl_statem_clear(sc);
4598 sc->handshake_func = s->method->ssl_connect;
4599 /* Ignore return value. Its a void public API function */
4600 clear_record_layer(sc);
4603 int ssl_undefined_function(SSL *s)
4605 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4609 int ssl_undefined_void_function(void)
4611 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4615 int ssl_undefined_const_function(const SSL *s)
4620 const SSL_METHOD *ssl_bad_method(int ver)
4622 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4626 const char *ssl_protocol_to_string(int version)
4630 case TLS1_3_VERSION:
4633 case TLS1_2_VERSION:
4636 case TLS1_1_VERSION:
4651 case DTLS1_2_VERSION:
4659 const char *SSL_get_version(const SSL *s)
4661 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4666 return ssl_protocol_to_string(sc->version);
4669 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4671 STACK_OF(X509_NAME) *sk;
4680 if ((sk = sk_X509_NAME_new_null()) == NULL)
4682 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4683 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4685 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4688 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4690 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4699 SSL *SSL_dup(SSL *s)
4703 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4704 SSL_CONNECTION *retsc;
4705 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4710 /* If we're not quiescent, just up_ref! */
4711 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4712 CRYPTO_UP_REF(&s->references, &i, s->lock);
4717 * Otherwise, copy configuration state, and session if set.
4719 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4721 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4724 if (sc->session != NULL) {
4726 * Arranges to share the same session via up_ref. This "copies"
4727 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4729 if (!SSL_copy_session_id(ret, s))
4733 * No session has been established yet, so we have to expect that
4734 * s->cert or ret->cert will be changed later -- they should not both
4735 * point to the same object, and thus we can't use
4736 * SSL_copy_session_id.
4738 if (!SSL_set_ssl_method(ret, s->method))
4741 if (sc->cert != NULL) {
4742 ssl_cert_free(retsc->cert);
4743 retsc->cert = ssl_cert_dup(sc->cert);
4744 if (retsc->cert == NULL)
4748 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4749 (int)sc->sid_ctx_length))
4753 if (!ssl_dane_dup(retsc, sc))
4755 retsc->version = sc->version;
4756 retsc->options = sc->options;
4757 retsc->min_proto_version = sc->min_proto_version;
4758 retsc->max_proto_version = sc->max_proto_version;
4759 retsc->mode = sc->mode;
4760 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4761 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4762 retsc->msg_callback = sc->msg_callback;
4763 retsc->msg_callback_arg = sc->msg_callback_arg;
4764 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4765 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4766 retsc->generate_session_id = sc->generate_session_id;
4768 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4770 /* copy app data, a little dangerous perhaps */
4771 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4774 retsc->server = sc->server;
4775 if (sc->handshake_func) {
4777 SSL_set_accept_state(ret);
4779 SSL_set_connect_state(ret);
4781 retsc->shutdown = sc->shutdown;
4782 retsc->hit = sc->hit;
4784 retsc->default_passwd_callback = sc->default_passwd_callback;
4785 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4787 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4789 /* dup the cipher_list and cipher_list_by_id stacks */
4790 if (sc->cipher_list != NULL) {
4791 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4794 if (sc->cipher_list_by_id != NULL)
4795 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4799 /* Dup the client_CA list */
4800 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4801 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4811 X509 *SSL_get_certificate(const SSL *s)
4813 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4818 if (sc->cert != NULL)
4819 return sc->cert->key->x509;
4824 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4826 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4831 if (sc->cert != NULL)
4832 return sc->cert->key->privatekey;
4837 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4839 if (ctx->cert != NULL)
4840 return ctx->cert->key->x509;
4845 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4847 if (ctx->cert != NULL)
4848 return ctx->cert->key->privatekey;
4853 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4855 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4860 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4861 return sc->session->cipher;
4865 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4867 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4872 return sc->s3.tmp.new_cipher;
4875 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4877 #ifndef OPENSSL_NO_COMP
4878 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4883 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4889 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4891 #ifndef OPENSSL_NO_COMP
4892 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4897 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4903 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4907 if (s->bbio != NULL) {
4908 /* Already buffered. */
4912 bbio = BIO_new(BIO_f_buffer());
4913 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
4915 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4919 s->wbio = BIO_push(bbio, s->wbio);
4921 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4926 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4928 /* callers ensure s is never null */
4929 if (s->bbio == NULL)
4932 s->wbio = BIO_pop(s->wbio);
4933 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4941 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4943 ctx->quiet_shutdown = mode;
4946 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4948 return ctx->quiet_shutdown;
4951 void SSL_set_quiet_shutdown(SSL *s, int mode)
4953 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4955 /* TODO(QUIC): Do we want this for QUIC? */
4959 sc->quiet_shutdown = mode;
4962 int SSL_get_quiet_shutdown(const SSL *s)
4964 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4966 /* TODO(QUIC): Do we want this for QUIC? */
4970 return sc->quiet_shutdown;
4973 void SSL_set_shutdown(SSL *s, int mode)
4975 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4977 /* TODO(QUIC): Do we want this for QUIC? */
4981 sc->shutdown = mode;
4984 int SSL_get_shutdown(const SSL *s)
4986 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4988 /* TODO(QUIC): Do we want this for QUIC? */
4992 return sc->shutdown;
4995 int SSL_version(const SSL *s)
4997 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4999 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5006 int SSL_client_version(const SSL *s)
5008 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5010 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5014 return sc->client_version;
5017 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
5022 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
5025 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5027 /* TODO(QUIC): Do we need this for QUIC support? */
5031 if (ssl->ctx == ctx)
5034 ctx = sc->session_ctx;
5035 new_cert = ssl_cert_dup(ctx->cert);
5036 if (new_cert == NULL) {
5040 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5041 ssl_cert_free(new_cert);
5045 ssl_cert_free(sc->cert);
5046 sc->cert = new_cert;
5049 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5050 * so setter APIs must prevent invalid lengths from entering the system.
5052 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5056 * If the session ID context matches that of the parent SSL_CTX,
5057 * inherit it from the new SSL_CTX as well. If however the context does
5058 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5059 * leave it unchanged.
5061 if ((ssl->ctx != NULL) &&
5062 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5063 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5064 sc->sid_ctx_length = ctx->sid_ctx_length;
5065 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5068 SSL_CTX_up_ref(ctx);
5069 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5075 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5077 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5081 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5083 X509_LOOKUP *lookup;
5085 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5089 /* We ignore errors, in case the directory doesn't exist */
5092 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5099 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5101 X509_LOOKUP *lookup;
5103 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5107 /* We ignore errors, in case the file doesn't exist */
5110 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5118 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5120 X509_LOOKUP *lookup;
5122 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5126 /* We ignore errors, in case the directory doesn't exist */
5129 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5136 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5138 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5142 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5144 return X509_STORE_load_path(ctx->cert_store, CApath);
5147 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5149 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5153 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5156 if (CAfile == NULL && CApath == NULL)
5158 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5160 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5165 void SSL_set_info_callback(SSL *ssl,
5166 void (*cb) (const SSL *ssl, int type, int val))
5168 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5173 sc->info_callback = cb;
5177 * One compiler (Diab DCC) doesn't like argument names in returned function
5180 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5183 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5188 return sc->info_callback;
5191 void SSL_set_verify_result(SSL *ssl, long arg)
5193 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5198 sc->verify_result = arg;
5201 long SSL_get_verify_result(const SSL *ssl)
5203 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5208 return sc->verify_result;
5211 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5213 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5219 return sizeof(sc->s3.client_random);
5220 if (outlen > sizeof(sc->s3.client_random))
5221 outlen = sizeof(sc->s3.client_random);
5222 memcpy(out, sc->s3.client_random, outlen);
5226 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5228 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5234 return sizeof(sc->s3.server_random);
5235 if (outlen > sizeof(sc->s3.server_random))
5236 outlen = sizeof(sc->s3.server_random);
5237 memcpy(out, sc->s3.server_random, outlen);
5241 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5242 unsigned char *out, size_t outlen)
5245 return session->master_key_length;
5246 if (outlen > session->master_key_length)
5247 outlen = session->master_key_length;
5248 memcpy(out, session->master_key, outlen);
5252 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5255 if (len > sizeof(sess->master_key))
5258 memcpy(sess->master_key, in, len);
5259 sess->master_key_length = len;
5264 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5266 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5269 void *SSL_get_ex_data(const SSL *s, int idx)
5271 return CRYPTO_get_ex_data(&s->ex_data, idx);
5274 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5276 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5279 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5281 return CRYPTO_get_ex_data(&s->ex_data, idx);
5284 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5286 return ctx->cert_store;
5289 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5291 X509_STORE_free(ctx->cert_store);
5292 ctx->cert_store = store;
5295 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5298 X509_STORE_up_ref(store);
5299 SSL_CTX_set_cert_store(ctx, store);
5302 int SSL_want(const SSL *s)
5304 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5312 #ifndef OPENSSL_NO_PSK
5313 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5315 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5316 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5319 OPENSSL_free(ctx->cert->psk_identity_hint);
5320 if (identity_hint != NULL) {
5321 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5322 if (ctx->cert->psk_identity_hint == NULL)
5325 ctx->cert->psk_identity_hint = NULL;
5329 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5331 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5336 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5337 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5340 OPENSSL_free(sc->cert->psk_identity_hint);
5341 if (identity_hint != NULL) {
5342 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5343 if (sc->cert->psk_identity_hint == NULL)
5346 sc->cert->psk_identity_hint = NULL;
5350 const char *SSL_get_psk_identity_hint(const SSL *s)
5352 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5354 if (sc == NULL || sc->session == NULL)
5357 return sc->session->psk_identity_hint;
5360 const char *SSL_get_psk_identity(const SSL *s)
5362 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5364 if (sc == NULL || sc->session == NULL)
5367 return sc->session->psk_identity;
5370 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5372 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5377 sc->psk_client_callback = cb;
5380 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5382 ctx->psk_client_callback = cb;
5385 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5387 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5392 sc->psk_server_callback = cb;
5395 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5397 ctx->psk_server_callback = cb;
5401 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5403 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5408 sc->psk_find_session_cb = cb;
5411 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5412 SSL_psk_find_session_cb_func cb)
5414 ctx->psk_find_session_cb = cb;
5417 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5419 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5424 sc->psk_use_session_cb = cb;
5427 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5428 SSL_psk_use_session_cb_func cb)
5430 ctx->psk_use_session_cb = cb;
5433 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5434 void (*cb) (int write_p, int version,
5435 int content_type, const void *buf,
5436 size_t len, SSL *ssl, void *arg))
5438 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5441 void SSL_set_msg_callback(SSL *ssl,
5442 void (*cb) (int write_p, int version,
5443 int content_type, const void *buf,
5444 size_t len, SSL *ssl, void *arg))
5446 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5449 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5450 int (*cb) (SSL *ssl,
5454 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5455 (void (*)(void))cb);
5458 void SSL_set_not_resumable_session_callback(SSL *ssl,
5459 int (*cb) (SSL *ssl,
5460 int is_forward_secure))
5462 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5463 (void (*)(void))cb);
5466 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5467 size_t (*cb) (SSL *ssl, int type,
5468 size_t len, void *arg))
5470 ctx->record_padding_cb = cb;
5473 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5475 ctx->record_padding_arg = arg;
5478 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5480 return ctx->record_padding_arg;
5483 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5485 /* block size of 0 or 1 is basically no padding */
5486 if (block_size == 1)
5487 ctx->block_padding = 0;
5488 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5489 ctx->block_padding = block_size;
5495 int SSL_set_record_padding_callback(SSL *ssl,
5496 size_t (*cb) (SSL *ssl, int type,
5497 size_t len, void *arg))
5500 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5505 b = SSL_get_wbio(ssl);
5506 if (b == NULL || !BIO_get_ktls_send(b)) {
5507 sc->rlayer.record_padding_cb = cb;
5513 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5515 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5520 sc->rlayer.record_padding_arg = arg;
5523 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5525 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5530 return sc->rlayer.record_padding_arg;
5533 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5535 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5540 /* block size of 0 or 1 is basically no padding */
5541 if (block_size == 1)
5542 sc->rlayer.block_padding = 0;
5543 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5544 sc->rlayer.block_padding = block_size;
5550 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5552 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5557 sc->num_tickets = num_tickets;
5562 size_t SSL_get_num_tickets(const SSL *s)
5564 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5569 return sc->num_tickets;
5572 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5574 ctx->num_tickets = num_tickets;
5579 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5581 return ctx->num_tickets;
5584 /* Retrieve handshake hashes */
5585 int ssl_handshake_hash(SSL_CONNECTION *s,
5586 unsigned char *out, size_t outlen,
5589 EVP_MD_CTX *ctx = NULL;
5590 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5591 int hashleni = EVP_MD_CTX_get_size(hdgst);
5594 if (hashleni < 0 || (size_t)hashleni > outlen) {
5595 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5599 ctx = EVP_MD_CTX_new();
5601 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5605 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5606 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5607 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5611 *hashlen = hashleni;
5615 EVP_MD_CTX_free(ctx);
5619 int SSL_session_reused(const SSL *s)
5621 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5629 int SSL_is_server(const SSL *s)
5631 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5639 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5640 void SSL_set_debug(SSL *s, int debug)
5642 /* Old function was do-nothing anyway... */
5648 void SSL_set_security_level(SSL *s, int level)
5650 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5655 sc->cert->sec_level = level;
5658 int SSL_get_security_level(const SSL *s)
5660 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5665 return sc->cert->sec_level;
5668 void SSL_set_security_callback(SSL *s,
5669 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5670 int op, int bits, int nid,
5671 void *other, void *ex))
5673 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5678 sc->cert->sec_cb = cb;
5681 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5682 const SSL_CTX *ctx, int op,
5683 int bits, int nid, void *other,
5685 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5690 return sc->cert->sec_cb;
5693 void SSL_set0_security_ex_data(SSL *s, void *ex)
5695 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5700 sc->cert->sec_ex = ex;
5703 void *SSL_get0_security_ex_data(const SSL *s)
5705 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5710 return sc->cert->sec_ex;
5713 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5715 ctx->cert->sec_level = level;
5718 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5720 return ctx->cert->sec_level;
5723 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5724 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5725 int op, int bits, int nid,
5726 void *other, void *ex))
5728 ctx->cert->sec_cb = cb;
5731 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5737 return ctx->cert->sec_cb;
5740 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5742 ctx->cert->sec_ex = ex;
5745 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5747 return ctx->cert->sec_ex;
5750 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5752 return ctx->options;
5755 uint64_t SSL_get_options(const SSL *s)
5757 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5765 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5767 return ctx->options |= op;
5770 uint64_t SSL_set_options(SSL *s, uint64_t op)
5772 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5773 OSSL_PARAM options[2], *opts = options;
5780 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5782 *opts = OSSL_PARAM_construct_end();
5784 /* Ignore return value */
5785 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5790 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5792 return ctx->options &= ~op;
5795 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5797 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5802 return sc->options &= ~op;
5805 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5807 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5812 return sc->verified_chain;
5815 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5817 #ifndef OPENSSL_NO_CT
5820 * Moves SCTs from the |src| stack to the |dst| stack.
5821 * The source of each SCT will be set to |origin|.
5822 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5824 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5826 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5827 sct_source_t origin)
5833 *dst = sk_SCT_new_null();
5835 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5840 while ((sct = sk_SCT_pop(src)) != NULL) {
5841 if (SCT_set_source(sct, origin) != 1)
5844 if (sk_SCT_push(*dst, sct) <= 0)
5852 sk_SCT_push(src, sct); /* Put the SCT back */
5857 * Look for data collected during ServerHello and parse if found.
5858 * Returns the number of SCTs extracted.
5860 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5862 int scts_extracted = 0;
5864 if (s->ext.scts != NULL) {
5865 const unsigned char *p = s->ext.scts;
5866 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5868 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5870 SCT_LIST_free(scts);
5873 return scts_extracted;
5877 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5878 * contains an SCT X509 extension. They will be stored in |s->scts|.
5880 * - The number of SCTs extracted, assuming an OCSP response exists.
5881 * - 0 if no OCSP response exists or it contains no SCTs.
5882 * - A negative integer if an error occurs.
5884 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5886 # ifndef OPENSSL_NO_OCSP
5887 int scts_extracted = 0;
5888 const unsigned char *p;
5889 OCSP_BASICRESP *br = NULL;
5890 OCSP_RESPONSE *rsp = NULL;
5891 STACK_OF(SCT) *scts = NULL;
5894 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5897 p = s->ext.ocsp.resp;
5898 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5902 br = OCSP_response_get1_basic(rsp);
5906 for (i = 0; i < OCSP_resp_count(br); ++i) {
5907 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5913 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5915 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5916 if (scts_extracted < 0)
5920 SCT_LIST_free(scts);
5921 OCSP_BASICRESP_free(br);
5922 OCSP_RESPONSE_free(rsp);
5923 return scts_extracted;
5925 /* Behave as if no OCSP response exists */
5931 * Attempts to extract SCTs from the peer certificate.
5932 * Return the number of SCTs extracted, or a negative integer if an error
5935 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5937 int scts_extracted = 0;
5938 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5941 STACK_OF(SCT) *scts =
5942 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5945 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5947 SCT_LIST_free(scts);
5950 return scts_extracted;
5954 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5955 * response (if it exists) and X509v3 extensions in the certificate.
5956 * Returns NULL if an error occurs.
5958 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5960 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5965 if (!sc->scts_parsed) {
5966 if (ct_extract_tls_extension_scts(sc) < 0 ||
5967 ct_extract_ocsp_response_scts(sc) < 0 ||
5968 ct_extract_x509v3_extension_scts(sc) < 0)
5971 sc->scts_parsed = 1;
5978 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5979 const STACK_OF(SCT) *scts, void *unused_arg)
5984 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5985 const STACK_OF(SCT) *scts, void *unused_arg)
5987 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5990 for (i = 0; i < count; ++i) {
5991 SCT *sct = sk_SCT_value(scts, i);
5992 int status = SCT_get_validation_status(sct);
5994 if (status == SCT_VALIDATION_STATUS_VALID)
5997 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
6001 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
6004 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6010 * Since code exists that uses the custom extension handler for CT, look
6011 * for this and throw an error if they have already registered to use CT.
6013 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6014 TLSEXT_TYPE_signed_certificate_timestamp))
6016 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6020 if (callback != NULL) {
6022 * If we are validating CT, then we MUST accept SCTs served via OCSP
6024 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6028 sc->ct_validation_callback = callback;
6029 sc->ct_validation_callback_arg = arg;
6034 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6035 ssl_ct_validation_cb callback, void *arg)
6038 * Since code exists that uses the custom extension handler for CT, look for
6039 * this and throw an error if they have already registered to use CT.
6041 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6042 TLSEXT_TYPE_signed_certificate_timestamp))
6044 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6048 ctx->ct_validation_callback = callback;
6049 ctx->ct_validation_callback_arg = arg;
6053 int SSL_ct_is_enabled(const SSL *s)
6055 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6060 return sc->ct_validation_callback != NULL;
6063 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6065 return ctx->ct_validation_callback != NULL;
6068 int ssl_validate_ct(SSL_CONNECTION *s)
6071 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6073 SSL_DANE *dane = &s->dane;
6074 CT_POLICY_EVAL_CTX *ctx = NULL;
6075 const STACK_OF(SCT) *scts;
6078 * If no callback is set, the peer is anonymous, or its chain is invalid,
6079 * skip SCT validation - just return success. Applications that continue
6080 * handshakes without certificates, with unverified chains, or pinned leaf
6081 * certificates are outside the scope of the WebPKI and CT.
6083 * The above exclusions notwithstanding the vast majority of peers will
6084 * have rather ordinary certificate chains validated by typical
6085 * applications that perform certificate verification and therefore will
6086 * process SCTs when enabled.
6088 if (s->ct_validation_callback == NULL || cert == NULL ||
6089 s->verify_result != X509_V_OK ||
6090 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6094 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6095 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6097 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6098 switch (dane->mtlsa->usage) {
6099 case DANETLS_USAGE_DANE_TA:
6100 case DANETLS_USAGE_DANE_EE:
6105 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6106 SSL_CONNECTION_GET_CTX(s)->propq);
6108 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6112 issuer = sk_X509_value(s->verified_chain, 1);
6113 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6114 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6115 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6116 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6117 CT_POLICY_EVAL_CTX_set_time(
6118 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6120 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6123 * This function returns success (> 0) only when all the SCTs are valid, 0
6124 * when some are invalid, and < 0 on various internal errors (out of
6125 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6126 * reason to abort the handshake, that decision is up to the callback.
6127 * Therefore, we error out only in the unexpected case that the return
6128 * value is negative.
6130 * XXX: One might well argue that the return value of this function is an
6131 * unfortunate design choice. Its job is only to determine the validation
6132 * status of each of the provided SCTs. So long as it correctly separates
6133 * the wheat from the chaff it should return success. Failure in this case
6134 * ought to correspond to an inability to carry out its duties.
6136 if (SCT_LIST_validate(scts, ctx) < 0) {
6137 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6141 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6143 ret = 0; /* This function returns 0 on failure */
6145 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6148 CT_POLICY_EVAL_CTX_free(ctx);
6150 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6151 * failure return code here. Also the application may wish the complete
6152 * the handshake, and then disconnect cleanly at a higher layer, after
6153 * checking the verification status of the completed connection.
6155 * We therefore force a certificate verification failure which will be
6156 * visible via SSL_get_verify_result() and cached as part of any resumed
6159 * Note: the permissive callback is for information gathering only, always
6160 * returns success, and does not affect verification status. Only the
6161 * strict callback or a custom application-specified callback can trigger
6162 * connection failure or record a verification error.
6165 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6169 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6171 switch (validation_mode) {
6173 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6175 case SSL_CT_VALIDATION_PERMISSIVE:
6176 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6177 case SSL_CT_VALIDATION_STRICT:
6178 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6182 int SSL_enable_ct(SSL *s, int validation_mode)
6184 switch (validation_mode) {
6186 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6188 case SSL_CT_VALIDATION_PERMISSIVE:
6189 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6190 case SSL_CT_VALIDATION_STRICT:
6191 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6195 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6197 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6200 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6202 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6205 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6207 CTLOG_STORE_free(ctx->ctlog_store);
6208 ctx->ctlog_store = logs;
6211 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6213 return ctx->ctlog_store;
6216 #endif /* OPENSSL_NO_CT */
6218 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6221 c->client_hello_cb = cb;
6222 c->client_hello_cb_arg = arg;
6225 int SSL_client_hello_isv2(SSL *s)
6227 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6232 if (sc->clienthello == NULL)
6234 return sc->clienthello->isv2;
6237 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6239 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6244 if (sc->clienthello == NULL)
6246 return sc->clienthello->legacy_version;
6249 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6251 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6256 if (sc->clienthello == NULL)
6259 *out = sc->clienthello->random;
6260 return SSL3_RANDOM_SIZE;
6263 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6265 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6270 if (sc->clienthello == NULL)
6273 *out = sc->clienthello->session_id;
6274 return sc->clienthello->session_id_len;
6277 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6279 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6284 if (sc->clienthello == NULL)
6287 *out = PACKET_data(&sc->clienthello->ciphersuites);
6288 return PACKET_remaining(&sc->clienthello->ciphersuites);
6291 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6293 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6298 if (sc->clienthello == NULL)
6301 *out = sc->clienthello->compressions;
6302 return sc->clienthello->compressions_len;
6305 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6310 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6315 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6317 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6318 ext = sc->clienthello->pre_proc_exts + i;
6327 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6329 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6330 ext = sc->clienthello->pre_proc_exts + i;
6332 if (ext->received_order >= num)
6334 present[ext->received_order] = ext->type;
6341 OPENSSL_free(present);
6345 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6349 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6354 if (sc->clienthello == NULL || num_exts == NULL)
6356 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6357 ext = sc->clienthello->pre_proc_exts + i;
6369 if (*num_exts < num)
6371 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6372 ext = sc->clienthello->pre_proc_exts + i;
6374 if (ext->received_order >= num)
6376 exts[ext->received_order] = ext->type;
6383 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6388 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6393 if (sc->clienthello == NULL)
6395 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6396 r = sc->clienthello->pre_proc_exts + i;
6397 if (r->present && r->type == type) {
6399 *out = PACKET_data(&r->data);
6401 *outlen = PACKET_remaining(&r->data);
6408 int SSL_free_buffers(SSL *ssl)
6411 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6418 return rl->rrlmethod->free_buffers(rl->rrl)
6419 && rl->wrlmethod->free_buffers(rl->wrl);
6422 int SSL_alloc_buffers(SSL *ssl)
6425 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6432 return rl->rrlmethod->alloc_buffers(rl->rrl)
6433 && rl->wrlmethod->alloc_buffers(rl->wrl);
6436 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6438 ctx->keylog_callback = cb;
6441 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6443 return ctx->keylog_callback;
6446 static int nss_keylog_int(const char *prefix,
6448 const uint8_t *parameter_1,
6449 size_t parameter_1_len,
6450 const uint8_t *parameter_2,
6451 size_t parameter_2_len)
6454 char *cursor = NULL;
6458 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6460 if (sctx->keylog_callback == NULL)
6464 * Our output buffer will contain the following strings, rendered with
6465 * space characters in between, terminated by a NULL character: first the
6466 * prefix, then the first parameter, then the second parameter. The
6467 * meaning of each parameter depends on the specific key material being
6468 * logged. Note that the first and second parameters are encoded in
6469 * hexadecimal, so we need a buffer that is twice their lengths.
6471 prefix_len = strlen(prefix);
6472 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6473 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6476 strcpy(cursor, prefix);
6477 cursor += prefix_len;
6480 for (i = 0; i < parameter_1_len; i++) {
6481 sprintf(cursor, "%02x", parameter_1[i]);
6486 for (i = 0; i < parameter_2_len; i++) {
6487 sprintf(cursor, "%02x", parameter_2[i]);
6492 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6493 OPENSSL_clear_free(out, out_len);
6498 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6499 const uint8_t *encrypted_premaster,
6500 size_t encrypted_premaster_len,
6501 const uint8_t *premaster,
6502 size_t premaster_len)
6504 if (encrypted_premaster_len < 8) {
6505 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6509 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6510 return nss_keylog_int("RSA",
6512 encrypted_premaster,
6518 int ssl_log_secret(SSL_CONNECTION *sc,
6520 const uint8_t *secret,
6523 return nss_keylog_int(label,
6525 sc->s3.client_random,
6531 #define SSLV2_CIPHER_LEN 3
6533 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6537 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6539 if (PACKET_remaining(cipher_suites) == 0) {
6540 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6544 if (PACKET_remaining(cipher_suites) % n != 0) {
6545 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6549 OPENSSL_free(s->s3.tmp.ciphers_raw);
6550 s->s3.tmp.ciphers_raw = NULL;
6551 s->s3.tmp.ciphers_rawlen = 0;
6554 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6555 PACKET sslv2ciphers = *cipher_suites;
6556 unsigned int leadbyte;
6560 * We store the raw ciphers list in SSLv3+ format so we need to do some
6561 * preprocessing to convert the list first. If there are any SSLv2 only
6562 * ciphersuites with a non-zero leading byte then we are going to
6563 * slightly over allocate because we won't store those. But that isn't a
6566 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6567 s->s3.tmp.ciphers_raw = raw;
6569 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6572 for (s->s3.tmp.ciphers_rawlen = 0;
6573 PACKET_remaining(&sslv2ciphers) > 0;
6574 raw += TLS_CIPHER_LEN) {
6575 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6577 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6580 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6581 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6582 OPENSSL_free(s->s3.tmp.ciphers_raw);
6583 s->s3.tmp.ciphers_raw = NULL;
6584 s->s3.tmp.ciphers_rawlen = 0;
6588 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6590 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6591 &s->s3.tmp.ciphers_rawlen)) {
6592 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6598 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6599 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6600 STACK_OF(SSL_CIPHER) **scsvs)
6603 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6608 if (!PACKET_buf_init(&pkt, bytes, len))
6610 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6613 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6614 STACK_OF(SSL_CIPHER) **skp,
6615 STACK_OF(SSL_CIPHER) **scsvs_out,
6616 int sslv2format, int fatal)
6618 const SSL_CIPHER *c;
6619 STACK_OF(SSL_CIPHER) *sk = NULL;
6620 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6622 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6623 unsigned char cipher[SSLV2_CIPHER_LEN];
6625 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6627 if (PACKET_remaining(cipher_suites) == 0) {
6629 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6631 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6635 if (PACKET_remaining(cipher_suites) % n != 0) {
6637 SSLfatal(s, SSL_AD_DECODE_ERROR,
6638 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6640 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6644 sk = sk_SSL_CIPHER_new_null();
6645 scsvs = sk_SSL_CIPHER_new_null();
6646 if (sk == NULL || scsvs == NULL) {
6648 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6650 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6654 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6656 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6657 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6658 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6660 if (sslv2format && cipher[0] != '\0')
6663 /* For SSLv2-compat, ignore leading 0-byte. */
6664 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6666 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6667 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6669 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6671 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6676 if (PACKET_remaining(cipher_suites) > 0) {
6678 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6680 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6687 sk_SSL_CIPHER_free(sk);
6688 if (scsvs_out != NULL)
6691 sk_SSL_CIPHER_free(scsvs);
6694 sk_SSL_CIPHER_free(sk);
6695 sk_SSL_CIPHER_free(scsvs);
6699 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6701 ctx->max_early_data = max_early_data;
6706 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6708 return ctx->max_early_data;
6711 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6713 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6718 sc->max_early_data = max_early_data;
6723 uint32_t SSL_get_max_early_data(const SSL *s)
6725 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6730 return sc->max_early_data;
6733 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6735 ctx->recv_max_early_data = recv_max_early_data;
6740 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6742 return ctx->recv_max_early_data;
6745 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6747 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6752 sc->recv_max_early_data = recv_max_early_data;
6757 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6759 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6764 return sc->recv_max_early_data;
6767 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6769 /* Return any active Max Fragment Len extension */
6770 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6771 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6773 /* return current SSL connection setting */
6774 return sc->max_send_fragment;
6777 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6779 /* Return a value regarding an active Max Fragment Len extension */
6780 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6781 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6782 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6784 /* else limit |split_send_fragment| to current |max_send_fragment| */
6785 if (sc->split_send_fragment > sc->max_send_fragment)
6786 return sc->max_send_fragment;
6788 /* return current SSL connection setting */
6789 return sc->split_send_fragment;
6792 int SSL_stateless(SSL *s)
6795 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6797 /* TODO(QUIC): This will need further work. */
6801 /* Ensure there is no state left over from a previous invocation */
6807 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6808 ret = SSL_accept(s);
6809 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6811 if (ret > 0 && sc->ext.cookieok)
6814 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6820 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6822 ctx->pha_enabled = val;
6825 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6827 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6832 sc->pha_enabled = val;
6835 int SSL_verify_client_post_handshake(SSL *ssl)
6837 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6842 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6843 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6847 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6851 if (!SSL_is_init_finished(ssl)) {
6852 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6856 switch (sc->post_handshake_auth) {
6858 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6861 case SSL_PHA_EXT_SENT:
6862 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6864 case SSL_PHA_EXT_RECEIVED:
6866 case SSL_PHA_REQUEST_PENDING:
6867 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6869 case SSL_PHA_REQUESTED:
6870 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6874 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6876 /* checks verify_mode and algorithm_auth */
6877 if (!send_certificate_request(sc)) {
6878 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6879 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6883 ossl_statem_set_in_init(sc, 1);
6887 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6888 SSL_CTX_generate_session_ticket_fn gen_cb,
6889 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6892 ctx->generate_ticket_cb = gen_cb;
6893 ctx->decrypt_ticket_cb = dec_cb;
6894 ctx->ticket_cb_data = arg;
6898 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6899 SSL_allow_early_data_cb_fn cb,
6902 ctx->allow_early_data_cb = cb;
6903 ctx->allow_early_data_cb_data = arg;
6906 void SSL_set_allow_early_data_cb(SSL *s,
6907 SSL_allow_early_data_cb_fn cb,
6910 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6915 sc->allow_early_data_cb = cb;
6916 sc->allow_early_data_cb_data = arg;
6919 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6921 const char *properties)
6923 const EVP_CIPHER *ciph;
6925 ciph = tls_get_cipher_from_engine(nid);
6930 * If there is no engine cipher then we do an explicit fetch. This may fail
6931 * and that could be ok
6934 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6940 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6942 /* Don't up-ref an implicit EVP_CIPHER */
6943 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6947 * The cipher was explicitly fetched and therefore it is safe to cast
6950 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6953 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6958 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6960 * The cipher was explicitly fetched and therefore it is safe to cast
6963 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6967 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6969 const char *properties)
6973 md = tls_get_digest_from_engine(nid);
6977 /* Otherwise we do an explicit fetch */
6979 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6984 int ssl_evp_md_up_ref(const EVP_MD *md)
6986 /* Don't up-ref an implicit EVP_MD */
6987 if (EVP_MD_get0_provider(md) == NULL)
6991 * The digest was explicitly fetched and therefore it is safe to cast
6994 return EVP_MD_up_ref((EVP_MD *)md);
6997 void ssl_evp_md_free(const EVP_MD *md)
7002 if (EVP_MD_get0_provider(md) != NULL) {
7004 * The digest was explicitly fetched and therefore it is safe to cast
7007 EVP_MD_free((EVP_MD *)md);
7011 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
7013 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7018 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7019 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7020 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7023 EVP_PKEY_free(sc->cert->dh_tmp);
7024 sc->cert->dh_tmp = dhpkey;
7028 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
7030 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7031 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7032 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7035 EVP_PKEY_free(ctx->cert->dh_tmp);
7036 ctx->cert->dh_tmp = dhpkey;
7040 /* QUIC-specific methods which are supported on QUIC connections only. */
7041 int SSL_tick(SSL *s)
7044 #ifndef OPENSSL_NO_QUIC
7045 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7048 return ossl_quic_tick(qc);
7051 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7052 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7054 * DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7055 * which we consider a success case. Theoretically DTLSv1_handle_timeout
7056 * can also return 0 if s is NULL or not a DTLS object, but we've
7057 * already ruled out those possibilities above, so this is not possible
7058 * here. Thus the only failure cases are where DTLSv1_handle_timeout
7061 return DTLSv1_handle_timeout(s) >= 0;
7066 int SSL_get_tick_timeout(SSL *s, struct timeval *tv)
7069 #ifndef OPENSSL_NO_QUIC
7070 QUIC_CONNECTION *qc;
7072 qc = QUIC_CONNECTION_FROM_SSL(s);
7074 return ossl_quic_get_tick_timeout(qc, tv);
7077 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7078 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7079 && DTLSv1_get_timeout(s, tv))
7087 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7089 #ifndef OPENSSL_NO_QUIC
7090 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7095 return ossl_quic_get_rpoll_descriptor(qc, desc);
7101 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7103 #ifndef OPENSSL_NO_QUIC
7104 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7109 return ossl_quic_get_wpoll_descriptor(qc, desc);
7115 int SSL_net_read_desired(SSL *s)
7117 #ifndef OPENSSL_NO_QUIC
7118 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7123 return ossl_quic_get_net_read_desired(qc);
7129 int SSL_net_write_desired(SSL *s)
7131 #ifndef OPENSSL_NO_QUIC
7132 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7137 return ossl_quic_get_net_write_desired(qc);
7143 int SSL_set_blocking_mode(SSL *s, int blocking)
7145 #ifndef OPENSSL_NO_QUIC
7146 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7151 return ossl_quic_conn_set_blocking_mode(qc, blocking);
7157 int SSL_get_blocking_mode(SSL *s)
7159 #ifndef OPENSSL_NO_QUIC
7160 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7165 return ossl_quic_conn_get_blocking_mode(qc);
7171 int SSL_set_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr)
7173 #ifndef OPENSSL_NO_QUIC
7174 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7179 return ossl_quic_conn_set_initial_peer_addr(qc, peer_addr);
7185 int SSL_shutdown_ex(SSL *ssl, uint64_t flags,
7186 const SSL_SHUTDOWN_EX_ARGS *args,
7189 #ifndef OPENSSL_NO_QUIC
7190 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(ssl);
7193 return SSL_shutdown(ssl);
7195 return ossl_quic_conn_shutdown(qc, flags, args, args_len);
7197 return SSL_shutdown(ssl);