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 #ifndef OPENSSL_NO_QUIC
743 /* set the parent (user visible) ssl to self */
747 RECORD_LAYER_init(&s->rlayer, s);
749 s->options = ctx->options;
750 s->dane.flags = ctx->dane.flags;
751 s->min_proto_version = ctx->min_proto_version;
752 s->max_proto_version = ctx->max_proto_version;
754 s->max_cert_list = ctx->max_cert_list;
755 s->max_early_data = ctx->max_early_data;
756 s->recv_max_early_data = ctx->recv_max_early_data;
757 s->num_tickets = ctx->num_tickets;
758 s->pha_enabled = ctx->pha_enabled;
760 /* Shallow copy of the ciphersuites stack */
761 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
762 if (s->tls13_ciphersuites == NULL)
766 * Earlier library versions used to copy the pointer to the CERT, not
767 * its contents; only when setting new parameters for the per-SSL
768 * copy, ssl_cert_new would be called (and the direct reference to
769 * the per-SSL_CTX settings would be lost, but those still were
770 * indirectly accessed for various purposes, and for that reason they
771 * used to be known as s->ctx->default_cert). Now we don't look at the
772 * SSL_CTX's CERT after having duplicated it once.
774 s->cert = ssl_cert_dup(ctx->cert);
778 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
779 s->msg_callback = ctx->msg_callback;
780 s->msg_callback_arg = ctx->msg_callback_arg;
781 s->verify_mode = ctx->verify_mode;
782 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
783 s->rlayer.record_padding_cb = ctx->record_padding_cb;
784 s->rlayer.record_padding_arg = ctx->record_padding_arg;
785 s->rlayer.block_padding = ctx->block_padding;
786 s->sid_ctx_length = ctx->sid_ctx_length;
787 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
789 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
790 s->verify_callback = ctx->default_verify_callback;
791 s->generate_session_id = ctx->generate_session_id;
793 s->param = X509_VERIFY_PARAM_new();
794 if (s->param == NULL)
796 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
797 s->quiet_shutdown = ctx->quiet_shutdown;
799 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
800 s->max_send_fragment = ctx->max_send_fragment;
801 s->split_send_fragment = ctx->split_send_fragment;
802 s->max_pipelines = ctx->max_pipelines;
803 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
806 s->ext.debug_arg = NULL;
807 s->ext.ticket_expected = 0;
808 s->ext.status_type = ctx->ext.status_type;
809 s->ext.status_expected = 0;
810 s->ext.ocsp.ids = NULL;
811 s->ext.ocsp.exts = NULL;
812 s->ext.ocsp.resp = NULL;
813 s->ext.ocsp.resp_len = 0;
815 s->session_ctx = ctx;
816 if (ctx->ext.ecpointformats) {
817 s->ext.ecpointformats =
818 OPENSSL_memdup(ctx->ext.ecpointformats,
819 ctx->ext.ecpointformats_len);
820 if (!s->ext.ecpointformats) {
821 s->ext.ecpointformats_len = 0;
824 s->ext.ecpointformats_len =
825 ctx->ext.ecpointformats_len;
827 if (ctx->ext.supportedgroups) {
828 s->ext.supportedgroups =
829 OPENSSL_memdup(ctx->ext.supportedgroups,
830 ctx->ext.supportedgroups_len
831 * sizeof(*ctx->ext.supportedgroups));
832 if (!s->ext.supportedgroups) {
833 s->ext.supportedgroups_len = 0;
836 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
839 #ifndef OPENSSL_NO_NEXTPROTONEG
843 if (ctx->ext.alpn != NULL) {
844 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
845 if (s->ext.alpn == NULL) {
849 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
850 s->ext.alpn_len = ctx->ext.alpn_len;
853 s->verified_chain = NULL;
854 s->verify_result = X509_V_OK;
856 s->default_passwd_callback = ctx->default_passwd_callback;
857 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
859 s->key_update = SSL_KEY_UPDATE_NONE;
861 s->allow_early_data_cb = ctx->allow_early_data_cb;
862 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
864 if (!method->ssl_init(ssl))
867 s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
869 if (!method->ssl_reset(ssl))
872 #ifndef OPENSSL_NO_PSK
873 s->psk_client_callback = ctx->psk_client_callback;
874 s->psk_server_callback = ctx->psk_server_callback;
876 s->psk_find_session_cb = ctx->psk_find_session_cb;
877 s->psk_use_session_cb = ctx->psk_use_session_cb;
879 s->async_cb = ctx->async_cb;
880 s->async_cb_arg = ctx->async_cb_arg;
884 #ifndef OPENSSL_NO_COMP_ALG
885 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
888 #ifndef OPENSSL_NO_CT
889 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
890 ctx->ct_validation_callback_arg))
896 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
899 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
902 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
908 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
910 return ossl_ssl_connection_new_int(ctx, ctx->method);
913 int SSL_is_dtls(const SSL *s)
915 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
920 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
923 int SSL_up_ref(SSL *s)
927 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
930 REF_PRINT_COUNT("SSL", s);
931 REF_ASSERT_ISNT(i < 2);
932 return ((i > 1) ? 1 : 0);
935 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
936 unsigned int sid_ctx_len)
938 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
939 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
942 ctx->sid_ctx_length = sid_ctx_len;
943 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
948 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
949 unsigned int sid_ctx_len)
951 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
956 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
957 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
960 sc->sid_ctx_length = sid_ctx_len;
961 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
966 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
968 if (!CRYPTO_THREAD_write_lock(ctx->lock))
970 ctx->generate_session_id = cb;
971 CRYPTO_THREAD_unlock(ctx->lock);
975 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
977 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
979 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
981 sc->generate_session_id = cb;
982 CRYPTO_THREAD_unlock(ssl->lock);
986 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
990 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
991 * we can "construct" a session to give us the desired check - i.e. to
992 * find if there's a session in the hash table that would conflict with
993 * any new session built out of this id/id_len and the ssl_version in use
997 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
999 if (sc == NULL || id_len > sizeof(r.session_id))
1002 r.ssl_version = sc->version;
1003 r.session_id_length = id_len;
1004 memcpy(r.session_id, id, id_len);
1006 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1008 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1009 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1013 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1015 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1018 int SSL_set_purpose(SSL *s, int purpose)
1020 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1025 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1028 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1030 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1033 int SSL_set_trust(SSL *s, int trust)
1035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1040 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1043 int SSL_set1_host(SSL *s, const char *hostname)
1045 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1050 /* If a hostname is provided and parses as an IP address,
1051 * treat it as such. */
1052 if (hostname != NULL
1053 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1056 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1059 int SSL_add1_host(SSL *s, const char *hostname)
1061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1066 /* If a hostname is provided and parses as an IP address,
1067 * treat it as such. */
1070 ASN1_OCTET_STRING *ip;
1073 ip = a2i_IPADDRESS(hostname);
1075 /* We didn't want it; only to check if it *is* an IP address */
1076 ASN1_OCTET_STRING_free(ip);
1078 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1081 OPENSSL_free(old_ip);
1082 /* There can be only one IP address */
1086 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1090 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1093 void SSL_set_hostflags(SSL *s, unsigned int flags)
1095 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1100 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1103 const char *SSL_get0_peername(SSL *s)
1105 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1110 return X509_VERIFY_PARAM_get0_peername(sc->param);
1113 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1115 return dane_ctx_enable(&ctx->dane);
1118 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1120 unsigned long orig = ctx->dane.flags;
1122 ctx->dane.flags |= flags;
1126 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1128 unsigned long orig = ctx->dane.flags;
1130 ctx->dane.flags &= ~flags;
1134 int SSL_dane_enable(SSL *s, const char *basedomain)
1137 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1143 if (s->ctx->dane.mdmax == 0) {
1144 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1147 if (dane->trecs != NULL) {
1148 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1153 * Default SNI name. This rejects empty names, while set1_host below
1154 * accepts them and disables hostname checks. To avoid side-effects with
1155 * invalid input, set the SNI name first.
1157 if (sc->ext.hostname == NULL) {
1158 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1159 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1164 /* Primary RFC6125 reference identifier */
1165 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1166 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1172 dane->dctx = &s->ctx->dane;
1173 dane->trecs = sk_danetls_record_new_null();
1175 if (dane->trecs == NULL) {
1176 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1182 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1185 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1190 orig = sc->dane.flags;
1192 sc->dane.flags |= flags;
1196 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1199 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1204 orig = sc->dane.flags;
1206 sc->dane.flags &= ~flags;
1210 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1213 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1220 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1224 *mcert = dane->mcert;
1226 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1231 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1232 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1235 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1242 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1246 *usage = dane->mtlsa->usage;
1248 *selector = dane->mtlsa->selector;
1250 *mtype = dane->mtlsa->mtype;
1252 *data = dane->mtlsa->data;
1254 *dlen = dane->mtlsa->dlen;
1259 SSL_DANE *SSL_get0_dane(SSL *s)
1261 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1269 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1270 uint8_t mtype, const unsigned char *data, size_t dlen)
1272 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1277 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1280 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1283 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1286 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1288 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1291 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1293 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1298 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1301 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1306 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1308 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1316 void SSL_certs_clear(SSL *s)
1318 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1323 ssl_cert_clear_certs(sc->cert);
1326 void SSL_free(SSL *s)
1332 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1333 REF_PRINT_COUNT("SSL", s);
1336 REF_ASSERT_ISNT(i < 0);
1338 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1340 if (s->method != NULL)
1341 s->method->ssl_free(s);
1343 SSL_CTX_free(s->ctx);
1344 CRYPTO_THREAD_lock_free(s->lock);
1349 void ossl_ssl_connection_free(SSL *ssl)
1353 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1357 X509_VERIFY_PARAM_free(s->param);
1358 dane_final(&s->dane);
1360 /* Ignore return value */
1361 ssl_free_wbio_buffer(s);
1363 RECORD_LAYER_clear(&s->rlayer);
1365 BUF_MEM_free(s->init_buf);
1367 /* add extra stuff */
1368 sk_SSL_CIPHER_free(s->cipher_list);
1369 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1370 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1371 sk_SSL_CIPHER_free(s->peer_ciphers);
1373 /* Make the next call work :-) */
1374 if (s->session != NULL) {
1375 ssl_clear_bad_session(s);
1376 SSL_SESSION_free(s->session);
1378 SSL_SESSION_free(s->psksession);
1379 OPENSSL_free(s->psksession_id);
1381 ssl_cert_free(s->cert);
1382 OPENSSL_free(s->shared_sigalgs);
1383 /* Free up if allocated */
1385 OPENSSL_free(s->ext.hostname);
1386 SSL_CTX_free(s->session_ctx);
1387 OPENSSL_free(s->ext.ecpointformats);
1388 OPENSSL_free(s->ext.peer_ecpointformats);
1389 OPENSSL_free(s->ext.supportedgroups);
1390 OPENSSL_free(s->ext.peer_supportedgroups);
1391 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1392 #ifndef OPENSSL_NO_OCSP
1393 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1395 #ifndef OPENSSL_NO_CT
1396 SCT_LIST_free(s->scts);
1397 OPENSSL_free(s->ext.scts);
1399 OPENSSL_free(s->ext.ocsp.resp);
1400 OPENSSL_free(s->ext.alpn);
1401 OPENSSL_free(s->ext.tls13_cookie);
1402 if (s->clienthello != NULL)
1403 OPENSSL_free(s->clienthello->pre_proc_exts);
1404 OPENSSL_free(s->clienthello);
1405 OPENSSL_free(s->pha_context);
1406 EVP_MD_CTX_free(s->pha_dgst);
1408 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1409 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1411 OSSL_STACK_OF_X509_free(s->verified_chain);
1413 if (ssl->method != NULL)
1414 ssl->method->ssl_deinit(ssl);
1416 ASYNC_WAIT_CTX_free(s->waitctx);
1418 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1419 OPENSSL_free(s->ext.npn);
1422 #ifndef OPENSSL_NO_SRTP
1423 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1427 * We do this late. We want to ensure that any other references we held to
1428 * these BIOs are freed first *before* we call BIO_free_all(), because
1429 * BIO_free_all() will only free each BIO in the chain if the number of
1430 * references to the first BIO have dropped to 0
1432 BIO_free_all(s->wbio);
1434 BIO_free_all(s->rbio);
1438 void SSL_set0_rbio(SSL *s, BIO *rbio)
1440 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1441 #ifndef OPENSSL_NO_QUIC
1442 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1445 ossl_quic_conn_set0_net_rbio(qc, rbio);
1453 BIO_free_all(sc->rbio);
1455 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1458 void SSL_set0_wbio(SSL *s, BIO *wbio)
1460 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1461 #ifndef OPENSSL_NO_QUIC
1462 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1465 ossl_quic_conn_set0_net_wbio(qc, wbio);
1474 * If the output buffering BIO is still in place, remove it
1476 if (sc->bbio != NULL)
1477 sc->wbio = BIO_pop(sc->wbio);
1479 BIO_free_all(sc->wbio);
1482 /* Re-attach |bbio| to the new |wbio|. */
1483 if (sc->bbio != NULL)
1484 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1486 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1489 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1492 * For historical reasons, this function has many different cases in
1493 * ownership handling.
1496 /* If nothing has changed, do nothing */
1497 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1501 * If the two arguments are equal then one fewer reference is granted by the
1502 * caller than we want to take
1504 if (rbio != NULL && rbio == wbio)
1508 * If only the wbio is changed only adopt one reference.
1510 if (rbio == SSL_get_rbio(s)) {
1511 SSL_set0_wbio(s, wbio);
1515 * There is an asymmetry here for historical reasons. If only the rbio is
1516 * changed AND the rbio and wbio were originally different, then we only
1517 * adopt one reference.
1519 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1520 SSL_set0_rbio(s, rbio);
1524 /* Otherwise, adopt both references. */
1525 SSL_set0_rbio(s, rbio);
1526 SSL_set0_wbio(s, wbio);
1529 BIO *SSL_get_rbio(const SSL *s)
1531 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1532 #ifndef OPENSSL_NO_QUIC
1533 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1536 return ossl_quic_conn_get_net_rbio(qc);
1545 BIO *SSL_get_wbio(const SSL *s)
1547 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1548 #ifndef OPENSSL_NO_QUIC
1549 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1552 return ossl_quic_conn_get_net_rbio(qc);
1558 if (sc->bbio != NULL) {
1560 * If |bbio| is active, the true caller-configured BIO is its
1563 return BIO_next(sc->bbio);
1568 int SSL_get_fd(const SSL *s)
1570 return SSL_get_rfd(s);
1573 int SSL_get_rfd(const SSL *s)
1578 b = SSL_get_rbio(s);
1579 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1581 BIO_get_fd(r, &ret);
1585 int SSL_get_wfd(const SSL *s)
1590 b = SSL_get_wbio(s);
1591 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1593 BIO_get_fd(r, &ret);
1597 #ifndef OPENSSL_NO_SOCK
1598 int SSL_set_fd(SSL *s, int fd)
1603 bio = BIO_new(BIO_s_socket());
1606 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1609 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1610 SSL_set_bio(s, bio, bio);
1611 #ifndef OPENSSL_NO_KTLS
1613 * The new socket is created successfully regardless of ktls_enable.
1614 * ktls_enable doesn't change any functionality of the socket, except
1615 * changing the setsockopt to enable the processing of ktls_start.
1616 * Thus, it is not a problem to call it for non-TLS sockets.
1619 #endif /* OPENSSL_NO_KTLS */
1625 int SSL_set_wfd(SSL *s, int fd)
1627 BIO *rbio = SSL_get_rbio(s);
1629 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1630 || (int)BIO_get_fd(rbio, NULL) != fd) {
1631 BIO *bio = BIO_new(BIO_s_socket());
1634 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1637 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1638 SSL_set0_wbio(s, bio);
1639 #ifndef OPENSSL_NO_KTLS
1641 * The new socket is created successfully regardless of ktls_enable.
1642 * ktls_enable doesn't change any functionality of the socket, except
1643 * changing the setsockopt to enable the processing of ktls_start.
1644 * Thus, it is not a problem to call it for non-TLS sockets.
1647 #endif /* OPENSSL_NO_KTLS */
1650 SSL_set0_wbio(s, rbio);
1655 int SSL_set_rfd(SSL *s, int fd)
1657 BIO *wbio = SSL_get_wbio(s);
1659 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1660 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1661 BIO *bio = BIO_new(BIO_s_socket());
1664 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1667 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1668 SSL_set0_rbio(s, bio);
1671 SSL_set0_rbio(s, wbio);
1678 /* return length of latest Finished message we sent, copy to 'buf' */
1679 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1682 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1687 ret = sc->s3.tmp.finish_md_len;
1690 memcpy(buf, sc->s3.tmp.finish_md, count);
1694 /* return length of latest Finished message we expected, copy to 'buf' */
1695 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1698 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1703 ret = sc->s3.tmp.peer_finish_md_len;
1706 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1710 int SSL_get_verify_mode(const SSL *s)
1712 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1717 return sc->verify_mode;
1720 int SSL_get_verify_depth(const SSL *s)
1722 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1727 return X509_VERIFY_PARAM_get_depth(sc->param);
1730 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1731 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1736 return sc->verify_callback;
1739 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1741 return ctx->verify_mode;
1744 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1746 return X509_VERIFY_PARAM_get_depth(ctx->param);
1749 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1750 return ctx->default_verify_callback;
1753 void SSL_set_verify(SSL *s, int mode,
1754 int (*callback) (int ok, X509_STORE_CTX *ctx))
1756 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1761 sc->verify_mode = mode;
1762 if (callback != NULL)
1763 sc->verify_callback = callback;
1766 void SSL_set_verify_depth(SSL *s, int depth)
1768 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1773 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1776 void SSL_set_read_ahead(SSL *s, int yes)
1778 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1779 OSSL_PARAM options[2], *opts = options;
1784 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1786 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1787 &sc->rlayer.read_ahead);
1788 *opts = OSSL_PARAM_construct_end();
1790 /* Ignore return value */
1791 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1794 int SSL_get_read_ahead(const SSL *s)
1796 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1801 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1804 int SSL_pending(const SSL *s)
1806 size_t pending = s->method->ssl_pending(s);
1809 * SSL_pending cannot work properly if read-ahead is enabled
1810 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1811 * impossible to fix since SSL_pending cannot report errors that may be
1812 * observed while scanning the new data. (Note that SSL_pending() is
1813 * often used as a boolean value, so we'd better not return -1.)
1815 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1816 * we just return INT_MAX.
1818 return pending < INT_MAX ? (int)pending : INT_MAX;
1821 int SSL_has_pending(const SSL *s)
1824 * Similar to SSL_pending() but returns a 1 to indicate that we have
1825 * processed or unprocessed data available or 0 otherwise (as opposed to the
1826 * number of bytes available). Unlike SSL_pending() this will take into
1827 * account read_ahead data. A 1 return simply indicates that we have data.
1828 * That data may not result in any application data, or we may fail to parse
1829 * the records for some reason.
1831 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1833 /* Check buffered app data if any first */
1834 if (SSL_CONNECTION_IS_DTLS(sc)) {
1838 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1839 while ((item = pqueue_next(&iter)) != NULL) {
1841 if (rdata->length > 0)
1846 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1849 return RECORD_LAYER_read_pending(&sc->rlayer);
1852 X509 *SSL_get1_peer_certificate(const SSL *s)
1854 X509 *r = SSL_get0_peer_certificate(s);
1862 X509 *SSL_get0_peer_certificate(const SSL *s)
1864 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1869 if (sc->session == NULL)
1872 return sc->session->peer;
1875 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1878 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1883 if (sc->session == NULL)
1886 r = sc->session->peer_chain;
1889 * If we are a client, cert_chain includes the peer's own certificate; if
1890 * we are a server, it does not.
1897 * Now in theory, since the calling process own 't' it should be safe to
1898 * modify. We need to be able to read f without being hassled
1900 int SSL_copy_session_id(SSL *t, const SSL *f)
1903 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1904 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1905 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1907 if (tsc == NULL || fsc == NULL)
1910 /* Do we need to do SSL locking? */
1911 if (!SSL_set_session(t, SSL_get_session(f))) {
1916 * what if we are setup for one protocol version but want to talk another
1918 if (t->method != f->method) {
1919 t->method->ssl_deinit(t);
1920 t->method = f->method;
1921 if (t->method->ssl_init(t) == 0)
1925 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1926 ssl_cert_free(tsc->cert);
1927 tsc->cert = fsc->cert;
1928 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1935 /* Fix this so it checks all the valid key/cert options */
1936 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1938 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1939 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1942 if (ctx->cert->key->privatekey == NULL) {
1943 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1946 return X509_check_private_key
1947 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1950 /* Fix this function so that it takes an optional type parameter */
1951 int SSL_check_private_key(const SSL *ssl)
1953 const SSL_CONNECTION *sc;
1955 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1956 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1959 if (sc->cert->key->x509 == NULL) {
1960 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1963 if (sc->cert->key->privatekey == NULL) {
1964 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1967 return X509_check_private_key(sc->cert->key->x509,
1968 sc->cert->key->privatekey);
1971 int SSL_waiting_for_async(SSL *s)
1973 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1984 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1986 ASYNC_WAIT_CTX *ctx;
1987 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1992 if ((ctx = sc->waitctx) == NULL)
1994 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1997 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1998 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
2000 ASYNC_WAIT_CTX *ctx;
2001 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2006 if ((ctx = sc->waitctx) == NULL)
2008 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2012 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2014 ctx->async_cb = callback;
2018 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
2020 ctx->async_cb_arg = arg;
2024 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2026 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2031 sc->async_cb = callback;
2035 int SSL_set_async_callback_arg(SSL *s, void *arg)
2037 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2042 sc->async_cb_arg = arg;
2046 int SSL_get_async_status(SSL *s, int *status)
2048 ASYNC_WAIT_CTX *ctx;
2049 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2054 if ((ctx = sc->waitctx) == NULL)
2056 *status = ASYNC_WAIT_CTX_get_status(ctx);
2060 int SSL_accept(SSL *s)
2062 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2063 #ifndef OPENSSL_NO_QUIC
2064 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2067 return s->method->ssl_accept(s);
2073 if (sc->handshake_func == NULL) {
2074 /* Not properly initialized yet */
2075 SSL_set_accept_state(s);
2078 return SSL_do_handshake(s);
2081 int SSL_connect(SSL *s)
2083 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2084 #ifndef OPENSSL_NO_QUIC
2085 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2088 return s->method->ssl_connect(s);
2094 if (sc->handshake_func == NULL) {
2095 /* Not properly initialized yet */
2096 SSL_set_connect_state(s);
2099 return SSL_do_handshake(s);
2102 long SSL_get_default_timeout(const SSL *s)
2104 return (long int)ossl_time2seconds(s->method->get_timeout());
2107 static int ssl_async_wait_ctx_cb(void *arg)
2109 SSL *s = (SSL *)arg;
2110 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2115 return sc->async_cb(s, sc->async_cb_arg);
2118 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2119 int (*func) (void *))
2122 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2127 if (sc->waitctx == NULL) {
2128 sc->waitctx = ASYNC_WAIT_CTX_new();
2129 if (sc->waitctx == NULL)
2131 if (sc->async_cb != NULL
2132 && !ASYNC_WAIT_CTX_set_callback
2133 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2137 sc->rwstate = SSL_NOTHING;
2138 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2139 sizeof(struct ssl_async_args))) {
2141 sc->rwstate = SSL_NOTHING;
2142 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2145 sc->rwstate = SSL_ASYNC_PAUSED;
2148 sc->rwstate = SSL_ASYNC_NO_JOBS;
2154 sc->rwstate = SSL_NOTHING;
2155 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2156 /* Shouldn't happen */
2161 static int ssl_io_intern(void *vargs)
2163 struct ssl_async_args *args;
2169 args = (struct ssl_async_args *)vargs;
2173 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2176 switch (args->type) {
2178 return args->f.func_read(s, buf, num, &sc->asyncrw);
2180 return args->f.func_write(s, buf, num, &sc->asyncrw);
2182 return args->f.func_other(s);
2187 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2189 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2190 #ifndef OPENSSL_NO_QUIC
2191 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2194 return s->method->ssl_read(s, buf, num, readbytes);
2200 if (sc->handshake_func == NULL) {
2201 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2205 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2206 sc->rwstate = SSL_NOTHING;
2210 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2211 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2212 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2216 * If we are a client and haven't received the ServerHello etc then we
2219 ossl_statem_check_finish_init(sc, 0);
2221 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2222 struct ssl_async_args args;
2228 args.type = READFUNC;
2229 args.f.func_read = s->method->ssl_read;
2231 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2232 *readbytes = sc->asyncrw;
2235 return s->method->ssl_read(s, buf, num, readbytes);
2239 int SSL_read(SSL *s, void *buf, int num)
2245 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2249 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2252 * The cast is safe here because ret should be <= INT_MAX because num is
2256 ret = (int)readbytes;
2261 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2263 int ret = ssl_read_internal(s, buf, num, readbytes);
2270 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2273 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2275 /* TODO(QUIC): This will need special handling for QUIC */
2280 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2281 return SSL_READ_EARLY_DATA_ERROR;
2284 switch (sc->early_data_state) {
2285 case SSL_EARLY_DATA_NONE:
2286 if (!SSL_in_before(s)) {
2287 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2288 return SSL_READ_EARLY_DATA_ERROR;
2292 case SSL_EARLY_DATA_ACCEPT_RETRY:
2293 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2294 ret = SSL_accept(s);
2297 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2298 return SSL_READ_EARLY_DATA_ERROR;
2302 case SSL_EARLY_DATA_READ_RETRY:
2303 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2304 sc->early_data_state = SSL_EARLY_DATA_READING;
2305 ret = SSL_read_ex(s, buf, num, readbytes);
2307 * State machine will update early_data_state to
2308 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2311 if (ret > 0 || (ret <= 0 && sc->early_data_state
2312 != SSL_EARLY_DATA_FINISHED_READING)) {
2313 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2314 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2315 : SSL_READ_EARLY_DATA_ERROR;
2318 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2321 return SSL_READ_EARLY_DATA_FINISH;
2324 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2325 return SSL_READ_EARLY_DATA_ERROR;
2329 int SSL_get_early_data_status(const SSL *s)
2331 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2333 /* TODO(QUIC): This will need special handling for QUIC */
2337 return sc->ext.early_data;
2340 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2342 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2343 #ifndef OPENSSL_NO_QUIC
2344 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2347 return s->method->ssl_peek(s, buf, num, readbytes);
2353 if (sc->handshake_func == NULL) {
2354 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2358 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2361 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2362 struct ssl_async_args args;
2368 args.type = READFUNC;
2369 args.f.func_read = s->method->ssl_peek;
2371 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2372 *readbytes = sc->asyncrw;
2375 return s->method->ssl_peek(s, buf, num, readbytes);
2379 int SSL_peek(SSL *s, void *buf, int num)
2385 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2389 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2392 * The cast is safe here because ret should be <= INT_MAX because num is
2396 ret = (int)readbytes;
2402 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2404 int ret = ssl_peek_internal(s, buf, num, readbytes);
2411 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2413 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2414 #ifndef OPENSSL_NO_QUIC
2415 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2418 return s->method->ssl_write(s, buf, num, written);
2424 if (sc->handshake_func == NULL) {
2425 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2429 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2430 sc->rwstate = SSL_NOTHING;
2431 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2435 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2436 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2437 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2438 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2441 /* If we are a client and haven't sent the Finished we better do that */
2442 ossl_statem_check_finish_init(sc, 1);
2444 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2446 struct ssl_async_args args;
2449 args.buf = (void *)buf;
2451 args.type = WRITEFUNC;
2452 args.f.func_write = s->method->ssl_write;
2454 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2455 *written = sc->asyncrw;
2458 return s->method->ssl_write(s, buf, num, written);
2462 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2465 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2470 if (sc->handshake_func == NULL) {
2471 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2475 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2476 sc->rwstate = SSL_NOTHING;
2477 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2481 if (!BIO_get_ktls_send(sc->wbio)) {
2482 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2486 /* If we have an alert to send, lets send it */
2487 if (sc->s3.alert_dispatch > 0) {
2488 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2490 /* SSLfatal() already called if appropriate */
2493 /* if it went, fall through and send more stuff */
2496 sc->rwstate = SSL_WRITING;
2497 if (BIO_flush(sc->wbio) <= 0) {
2498 if (!BIO_should_retry(sc->wbio)) {
2499 sc->rwstate = SSL_NOTHING;
2502 set_sys_error(EAGAIN);
2508 #ifdef OPENSSL_NO_KTLS
2509 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2510 "can't call ktls_sendfile(), ktls disabled");
2513 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2515 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2516 if ((get_last_sys_error() == EAGAIN) ||
2517 (get_last_sys_error() == EINTR) ||
2518 (get_last_sys_error() == EBUSY))
2519 BIO_set_retry_write(sc->wbio);
2522 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2525 sc->rwstate = SSL_NOTHING;
2530 int SSL_write(SSL *s, const void *buf, int num)
2536 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2540 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2543 * The cast is safe here because ret should be <= INT_MAX because num is
2552 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2554 int ret = ssl_write_internal(s, buf, num, written);
2561 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2563 int ret, early_data_state;
2565 uint32_t partialwrite;
2566 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2568 /* TODO(QUIC): This will need special handling for QUIC */
2572 switch (sc->early_data_state) {
2573 case SSL_EARLY_DATA_NONE:
2575 || !SSL_in_before(s)
2576 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2577 && (sc->psk_use_session_cb == NULL))) {
2578 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2583 case SSL_EARLY_DATA_CONNECT_RETRY:
2584 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2585 ret = SSL_connect(s);
2588 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2593 case SSL_EARLY_DATA_WRITE_RETRY:
2594 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2596 * We disable partial write for early data because we don't keep track
2597 * of how many bytes we've written between the SSL_write_ex() call and
2598 * the flush if the flush needs to be retried)
2600 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2601 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2602 ret = SSL_write_ex(s, buf, num, &writtmp);
2603 sc->mode |= partialwrite;
2605 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2608 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2611 case SSL_EARLY_DATA_WRITE_FLUSH:
2612 /* The buffering BIO is still in place so we need to flush it */
2613 if (statem_flush(sc) != 1)
2616 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2619 case SSL_EARLY_DATA_FINISHED_READING:
2620 case SSL_EARLY_DATA_READ_RETRY:
2621 early_data_state = sc->early_data_state;
2622 /* We are a server writing to an unauthenticated client */
2623 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2624 ret = SSL_write_ex(s, buf, num, written);
2625 /* The buffering BIO is still in place */
2627 (void)BIO_flush(sc->wbio);
2628 sc->early_data_state = early_data_state;
2632 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2637 int SSL_shutdown(SSL *s)
2640 * Note that this function behaves differently from what one might
2641 * expect. Return values are 0 for no success (yet), 1 for success; but
2642 * calling it once is usually not enough, even if blocking I/O is used
2643 * (see ssl3_shutdown).
2645 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2650 if (sc->handshake_func == NULL) {
2651 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2655 if (!SSL_in_init(s)) {
2656 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2657 struct ssl_async_args args;
2659 memset(&args, 0, sizeof(args));
2661 args.type = OTHERFUNC;
2662 args.f.func_other = s->method->ssl_shutdown;
2664 return ssl_start_async_job(s, &args, ssl_io_intern);
2666 return s->method->ssl_shutdown(s);
2669 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2674 int SSL_key_update(SSL *s, int updatetype)
2676 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2681 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2682 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2686 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2687 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2688 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2692 if (!SSL_is_init_finished(s)) {
2693 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2697 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2698 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2702 ossl_statem_set_in_init(sc, 1);
2703 sc->key_update = updatetype;
2707 int SSL_get_key_update_type(const SSL *s)
2709 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2714 return sc->key_update;
2718 * Can we accept a renegotiation request? If yes, set the flag and
2719 * return 1 if yes. If not, raise error and return 0.
2721 static int can_renegotiate(const SSL_CONNECTION *sc)
2723 if (SSL_CONNECTION_IS_TLS13(sc)) {
2724 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2728 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2729 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2736 int SSL_renegotiate(SSL *s)
2738 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2743 if (!can_renegotiate(sc))
2746 sc->renegotiate = 1;
2747 sc->new_session = 1;
2748 return s->method->ssl_renegotiate(s);
2751 int SSL_renegotiate_abbreviated(SSL *s)
2753 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2758 if (!can_renegotiate(sc))
2761 sc->renegotiate = 1;
2762 sc->new_session = 0;
2763 return s->method->ssl_renegotiate(s);
2766 int SSL_renegotiate_pending(const SSL *s)
2768 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2774 * becomes true when negotiation is requested; false again once a
2775 * handshake has finished
2777 return (sc->renegotiate != 0);
2780 int SSL_new_session_ticket(SSL *s)
2782 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2787 /* If we are in init because we're sending tickets, okay to send more. */
2788 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2789 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2790 || !SSL_CONNECTION_IS_TLS13(sc))
2792 sc->ext.extra_tickets_expected++;
2793 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2794 ossl_statem_set_in_init(sc, 1);
2798 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2801 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2803 /* TODO(QUIC): Special handling for some ctrls will be needed */
2808 case SSL_CTRL_GET_READ_AHEAD:
2809 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2810 case SSL_CTRL_SET_READ_AHEAD:
2811 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2812 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2815 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2816 sc->msg_callback_arg = parg;
2821 OSSL_PARAM options[2], *opts = options;
2825 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2827 *opts = OSSL_PARAM_construct_end();
2829 /* Ignore return value */
2830 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2834 case SSL_CTRL_CLEAR_MODE:
2835 return (sc->mode &= ~larg);
2836 case SSL_CTRL_GET_MAX_CERT_LIST:
2837 return (long)sc->max_cert_list;
2838 case SSL_CTRL_SET_MAX_CERT_LIST:
2841 l = (long)sc->max_cert_list;
2842 sc->max_cert_list = (size_t)larg;
2844 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2845 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2847 #ifndef OPENSSL_NO_KTLS
2848 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2850 #endif /* OPENSSL_NO_KTLS */
2851 sc->max_send_fragment = larg;
2852 if (sc->max_send_fragment < sc->split_send_fragment)
2853 sc->split_send_fragment = sc->max_send_fragment;
2854 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2856 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2857 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2859 sc->split_send_fragment = larg;
2861 case SSL_CTRL_SET_MAX_PIPELINES:
2862 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2864 sc->max_pipelines = larg;
2865 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2866 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2868 case SSL_CTRL_GET_RI_SUPPORT:
2869 return sc->s3.send_connection_binding;
2870 case SSL_CTRL_SET_RETRY_VERIFY:
2871 sc->rwstate = SSL_RETRY_VERIFY;
2873 case SSL_CTRL_CERT_FLAGS:
2874 return (sc->cert->cert_flags |= larg);
2875 case SSL_CTRL_CLEAR_CERT_FLAGS:
2876 return (sc->cert->cert_flags &= ~larg);
2878 case SSL_CTRL_GET_RAW_CIPHERLIST:
2880 if (sc->s3.tmp.ciphers_raw == NULL)
2882 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2883 return (int)sc->s3.tmp.ciphers_rawlen;
2885 return TLS_CIPHER_LEN;
2887 case SSL_CTRL_GET_EXTMS_SUPPORT:
2888 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2890 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2894 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2895 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2896 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2897 &sc->min_proto_version);
2898 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2899 return sc->min_proto_version;
2900 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2901 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2902 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2903 &sc->max_proto_version);
2904 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2905 return sc->max_proto_version;
2907 return s->method->ssl_ctrl(s, cmd, larg, parg);
2911 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2913 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2919 case SSL_CTRL_SET_MSG_CALLBACK:
2920 sc->msg_callback = (void (*)
2921 (int write_p, int version, int content_type,
2922 const void *buf, size_t len, SSL *ssl,
2927 return s->method->ssl_callback_ctrl(s, cmd, fp);
2931 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2933 return ctx->sessions;
2936 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2940 if (ssl_tsan_lock(ctx)) {
2941 res = tsan_load(stat);
2942 ssl_tsan_unlock(ctx);
2947 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2950 /* For some cases with ctx == NULL perform syntax checks */
2953 case SSL_CTRL_SET_GROUPS_LIST:
2954 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2955 case SSL_CTRL_SET_SIGALGS_LIST:
2956 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2957 return tls1_set_sigalgs_list(NULL, parg, 0);
2964 case SSL_CTRL_GET_READ_AHEAD:
2965 return ctx->read_ahead;
2966 case SSL_CTRL_SET_READ_AHEAD:
2967 l = ctx->read_ahead;
2968 ctx->read_ahead = larg;
2971 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2972 ctx->msg_callback_arg = parg;
2975 case SSL_CTRL_GET_MAX_CERT_LIST:
2976 return (long)ctx->max_cert_list;
2977 case SSL_CTRL_SET_MAX_CERT_LIST:
2980 l = (long)ctx->max_cert_list;
2981 ctx->max_cert_list = (size_t)larg;
2984 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2987 l = (long)ctx->session_cache_size;
2988 ctx->session_cache_size = (size_t)larg;
2990 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2991 return (long)ctx->session_cache_size;
2992 case SSL_CTRL_SET_SESS_CACHE_MODE:
2993 l = ctx->session_cache_mode;
2994 ctx->session_cache_mode = larg;
2996 case SSL_CTRL_GET_SESS_CACHE_MODE:
2997 return ctx->session_cache_mode;
2999 case SSL_CTRL_SESS_NUMBER:
3000 return lh_SSL_SESSION_num_items(ctx->sessions);
3001 case SSL_CTRL_SESS_CONNECT:
3002 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
3003 case SSL_CTRL_SESS_CONNECT_GOOD:
3004 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
3005 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3006 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3007 case SSL_CTRL_SESS_ACCEPT:
3008 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3009 case SSL_CTRL_SESS_ACCEPT_GOOD:
3010 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3011 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3012 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3013 case SSL_CTRL_SESS_HIT:
3014 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3015 case SSL_CTRL_SESS_CB_HIT:
3016 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3017 case SSL_CTRL_SESS_MISSES:
3018 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3019 case SSL_CTRL_SESS_TIMEOUTS:
3020 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3021 case SSL_CTRL_SESS_CACHE_FULL:
3022 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3024 return (ctx->mode |= larg);
3025 case SSL_CTRL_CLEAR_MODE:
3026 return (ctx->mode &= ~larg);
3027 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3028 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
3030 ctx->max_send_fragment = larg;
3031 if (ctx->max_send_fragment < ctx->split_send_fragment)
3032 ctx->split_send_fragment = ctx->max_send_fragment;
3034 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3035 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
3037 ctx->split_send_fragment = larg;
3039 case SSL_CTRL_SET_MAX_PIPELINES:
3040 if (larg < 1 || larg > SSL_MAX_PIPELINES)
3042 ctx->max_pipelines = larg;
3044 case SSL_CTRL_CERT_FLAGS:
3045 return (ctx->cert->cert_flags |= larg);
3046 case SSL_CTRL_CLEAR_CERT_FLAGS:
3047 return (ctx->cert->cert_flags &= ~larg);
3048 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3049 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3050 && ssl_set_version_bound(ctx->method->version, (int)larg,
3051 &ctx->min_proto_version);
3052 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3053 return ctx->min_proto_version;
3054 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3055 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3056 && ssl_set_version_bound(ctx->method->version, (int)larg,
3057 &ctx->max_proto_version);
3058 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3059 return ctx->max_proto_version;
3061 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3065 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3068 case SSL_CTRL_SET_MSG_CALLBACK:
3069 ctx->msg_callback = (void (*)
3070 (int write_p, int version, int content_type,
3071 const void *buf, size_t len, SSL *ssl,
3076 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3080 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3089 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3090 const SSL_CIPHER *const *bp)
3092 if ((*ap)->id > (*bp)->id)
3094 if ((*ap)->id < (*bp)->id)
3100 * return a STACK of the ciphers available for the SSL and in order of
3103 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3105 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3108 if (sc->cipher_list != NULL) {
3109 return sc->cipher_list;
3110 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3111 return s->ctx->cipher_list;
3117 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3119 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3121 if (sc == NULL || !sc->server)
3123 return sc->peer_ciphers;
3126 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3128 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3130 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3135 ciphers = SSL_get_ciphers(s);
3138 if (!ssl_set_client_disabled(sc))
3140 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3141 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3142 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3144 sk = sk_SSL_CIPHER_new_null();
3147 if (!sk_SSL_CIPHER_push(sk, c)) {
3148 sk_SSL_CIPHER_free(sk);
3156 /** return a STACK of the ciphers available for the SSL and in order of
3158 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3161 if (s->cipher_list_by_id != NULL)
3162 return s->cipher_list_by_id;
3163 else if (s->ssl.ctx != NULL
3164 && s->ssl.ctx->cipher_list_by_id != NULL)
3165 return s->ssl.ctx->cipher_list_by_id;
3170 /** The old interface to get the same thing as SSL_get_ciphers() */
3171 const char *SSL_get_cipher_list(const SSL *s, int n)
3173 const SSL_CIPHER *c;
3174 STACK_OF(SSL_CIPHER) *sk;
3178 sk = SSL_get_ciphers(s);
3179 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3181 c = sk_SSL_CIPHER_value(sk, n);
3187 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3189 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3192 return ctx->cipher_list;
3197 * Distinguish between ciphers controlled by set_ciphersuite() and
3198 * set_cipher_list() when counting.
3200 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3203 const SSL_CIPHER *c;
3207 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3208 c = sk_SSL_CIPHER_value(sk, i);
3209 if (c->min_tls >= TLS1_3_VERSION)
3216 /** specify the ciphers to be used by default by the SSL_CTX */
3217 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3219 STACK_OF(SSL_CIPHER) *sk;
3221 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3222 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3225 * ssl_create_cipher_list may return an empty stack if it was unable to
3226 * find a cipher matching the given rule string (for example if the rule
3227 * string specifies a cipher which has been disabled). This is not an
3228 * error as far as ssl_create_cipher_list is concerned, and hence
3229 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3233 else if (cipher_list_tls12_num(sk) == 0) {
3234 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3240 /** specify the ciphers to be used by the SSL */
3241 int SSL_set_cipher_list(SSL *s, const char *str)
3243 STACK_OF(SSL_CIPHER) *sk;
3244 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3249 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3250 &sc->cipher_list, &sc->cipher_list_by_id, str,
3252 /* see comment in SSL_CTX_set_cipher_list */
3255 else if (cipher_list_tls12_num(sk) == 0) {
3256 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3262 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3265 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3266 const SSL_CIPHER *c;
3268 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3274 || sc->peer_ciphers == NULL
3279 clntsk = sc->peer_ciphers;
3280 srvrsk = SSL_get_ciphers(s);
3281 if (clntsk == NULL || srvrsk == NULL)
3284 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3287 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3290 c = sk_SSL_CIPHER_value(clntsk, i);
3291 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3294 n = strlen(c->name);
3311 * Return the requested servername (SNI) value. Note that the behaviour varies
3313 * - whether this is called by the client or the server,
3314 * - if we are before or during/after the handshake,
3315 * - if a resumption or normal handshake is being attempted/has occurred
3316 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3318 * Note that only the host_name type is defined (RFC 3546).
3320 const char *SSL_get_servername(const SSL *s, const int type)
3322 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3329 * If we don't know if we are the client or the server yet then we assume
3332 server = sc->handshake_func == NULL ? 0 : sc->server;
3334 if (type != TLSEXT_NAMETYPE_host_name)
3340 * In TLSv1.3 on the server SNI is not associated with the session
3341 * but in TLSv1.2 or below it is.
3343 * Before the handshake:
3346 * During/after the handshake (TLSv1.2 or below resumption occurred):
3347 * - If a servername was accepted by the server in the original
3348 * handshake then it will return that servername, or NULL otherwise.
3350 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3351 * - The function will return the servername requested by the client in
3352 * this handshake or NULL if none was requested.
3354 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3355 return sc->session->ext.hostname;
3360 * Before the handshake:
3361 * - If a servername has been set via a call to
3362 * SSL_set_tlsext_host_name() then it will return that servername
3363 * - If one has not been set, but a TLSv1.2 resumption is being
3364 * attempted and the session from the original handshake had a
3365 * servername accepted by the server then it will return that
3367 * - Otherwise it returns NULL
3369 * During/after the handshake (TLSv1.2 or below resumption occurred):
3370 * - If the session from the original handshake had a servername accepted
3371 * by the server then it will return that servername.
3372 * - Otherwise it returns the servername set via
3373 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3375 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3376 * - It will return the servername set via SSL_set_tlsext_host_name()
3377 * (or NULL if it was not called).
3379 if (SSL_in_before(s)) {
3380 if (sc->ext.hostname == NULL
3381 && sc->session != NULL
3382 && sc->session->ssl_version != TLS1_3_VERSION)
3383 return sc->session->ext.hostname;
3385 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3386 && sc->session->ext.hostname != NULL)
3387 return sc->session->ext.hostname;
3391 return sc->ext.hostname;
3394 int SSL_get_servername_type(const SSL *s)
3396 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3397 return TLSEXT_NAMETYPE_host_name;
3402 * SSL_select_next_proto implements the standard protocol selection. It is
3403 * expected that this function is called from the callback set by
3404 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3405 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3406 * not included in the length. A byte string of length 0 is invalid. No byte
3407 * string may be truncated. The current, but experimental algorithm for
3408 * selecting the protocol is: 1) If the server doesn't support NPN then this
3409 * is indicated to the callback. In this case, the client application has to
3410 * abort the connection or have a default application level protocol. 2) If
3411 * the server supports NPN, but advertises an empty list then the client
3412 * selects the first protocol in its list, but indicates via the API that this
3413 * fallback case was enacted. 3) Otherwise, the client finds the first
3414 * protocol in the server's list that it supports and selects this protocol.
3415 * This is because it's assumed that the server has better information about
3416 * which protocol a client should use. 4) If the client doesn't support any
3417 * of the server's advertised protocols, then this is treated the same as
3418 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3419 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3421 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3422 const unsigned char *server,
3423 unsigned int server_len,
3424 const unsigned char *client, unsigned int client_len)
3427 const unsigned char *result;
3428 int status = OPENSSL_NPN_UNSUPPORTED;
3431 * For each protocol in server preference order, see if we support it.
3433 for (i = 0; i < server_len;) {
3434 for (j = 0; j < client_len;) {
3435 if (server[i] == client[j] &&
3436 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3437 /* We found a match */
3438 result = &server[i];
3439 status = OPENSSL_NPN_NEGOTIATED;
3449 /* There's no overlap between our protocols and the server's list. */
3451 status = OPENSSL_NPN_NO_OVERLAP;
3454 *out = (unsigned char *)result + 1;
3455 *outlen = result[0];
3459 #ifndef OPENSSL_NO_NEXTPROTONEG
3461 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3462 * client's requested protocol for this connection and returns 0. If the
3463 * client didn't request any protocol, then *data is set to NULL. Note that
3464 * the client can request any protocol it chooses. The value returned from
3465 * this function need not be a member of the list of supported protocols
3466 * provided by the callback.
3468 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3471 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3474 /* We have no other way to indicate error */
3480 *data = sc->ext.npn;
3481 if (*data == NULL) {
3484 *len = (unsigned int)sc->ext.npn_len;
3489 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3490 * a TLS server needs a list of supported protocols for Next Protocol
3491 * Negotiation. The returned list must be in wire format. The list is
3492 * returned by setting |out| to point to it and |outlen| to its length. This
3493 * memory will not be modified, but one should assume that the SSL* keeps a
3494 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3495 * wishes to advertise. Otherwise, no such extension will be included in the
3498 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3499 SSL_CTX_npn_advertised_cb_func cb,
3502 ctx->ext.npn_advertised_cb = cb;
3503 ctx->ext.npn_advertised_cb_arg = arg;
3507 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3508 * client needs to select a protocol from the server's provided list. |out|
3509 * must be set to point to the selected protocol (which may be within |in|).
3510 * The length of the protocol name must be written into |outlen|. The
3511 * server's advertised protocols are provided in |in| and |inlen|. The
3512 * callback can assume that |in| is syntactically valid. The client must
3513 * select a protocol. It is fatal to the connection if this callback returns
3514 * a value other than SSL_TLSEXT_ERR_OK.
3516 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3517 SSL_CTX_npn_select_cb_func cb,
3520 ctx->ext.npn_select_cb = cb;
3521 ctx->ext.npn_select_cb_arg = arg;
3525 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3529 if (protos_len < 2 || protos == NULL)
3532 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3533 if (protos[idx] == 0)
3536 return idx == protos_len;
3539 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3540 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3541 * length-prefixed strings). Returns 0 on success.
3543 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3544 unsigned int protos_len)
3546 unsigned char *alpn;
3548 if (protos_len == 0 || protos == NULL) {
3549 OPENSSL_free(ctx->ext.alpn);
3550 ctx->ext.alpn = NULL;
3551 ctx->ext.alpn_len = 0;
3554 /* Not valid per RFC */
3555 if (!alpn_value_ok(protos, protos_len))
3558 alpn = OPENSSL_memdup(protos, protos_len);
3561 OPENSSL_free(ctx->ext.alpn);
3562 ctx->ext.alpn = alpn;
3563 ctx->ext.alpn_len = protos_len;
3569 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3570 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3571 * length-prefixed strings). Returns 0 on success.
3573 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3574 unsigned int protos_len)
3576 unsigned char *alpn;
3577 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3582 if (protos_len == 0 || protos == NULL) {
3583 OPENSSL_free(sc->ext.alpn);
3584 sc->ext.alpn = NULL;
3585 sc->ext.alpn_len = 0;
3588 /* Not valid per RFC */
3589 if (!alpn_value_ok(protos, protos_len))
3592 alpn = OPENSSL_memdup(protos, protos_len);
3595 OPENSSL_free(sc->ext.alpn);
3596 sc->ext.alpn = alpn;
3597 sc->ext.alpn_len = protos_len;
3603 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3604 * called during ClientHello processing in order to select an ALPN protocol
3605 * from the client's list of offered protocols.
3607 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3608 SSL_CTX_alpn_select_cb_func cb,
3611 ctx->ext.alpn_select_cb = cb;
3612 ctx->ext.alpn_select_cb_arg = arg;
3616 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3617 * On return it sets |*data| to point to |*len| bytes of protocol name
3618 * (not including the leading length-prefix byte). If the server didn't
3619 * respond with a negotiated protocol then |*len| will be zero.
3621 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3624 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3627 /* We have no other way to indicate error */
3633 *data = sc->s3.alpn_selected;
3637 *len = (unsigned int)sc->s3.alpn_selected_len;
3640 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3641 const char *label, size_t llen,
3642 const unsigned char *context, size_t contextlen,
3645 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3650 if (sc->session == NULL
3651 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3654 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3656 contextlen, use_context);
3659 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3660 const char *label, size_t llen,
3661 const unsigned char *context,
3664 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3669 if (sc->version != TLS1_3_VERSION)
3672 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3673 context, contextlen);
3676 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3678 const unsigned char *session_id = a->session_id;
3680 unsigned char tmp_storage[4];
3682 if (a->session_id_length < sizeof(tmp_storage)) {
3683 memset(tmp_storage, 0, sizeof(tmp_storage));
3684 memcpy(tmp_storage, a->session_id, a->session_id_length);
3685 session_id = tmp_storage;
3689 ((unsigned long)session_id[0]) |
3690 ((unsigned long)session_id[1] << 8L) |
3691 ((unsigned long)session_id[2] << 16L) |
3692 ((unsigned long)session_id[3] << 24L);
3697 * NB: If this function (or indeed the hash function which uses a sort of
3698 * coarser function than this one) is changed, ensure
3699 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3700 * being able to construct an SSL_SESSION that will collide with any existing
3701 * session with a matching session ID.
3703 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3705 if (a->ssl_version != b->ssl_version)
3707 if (a->session_id_length != b->session_id_length)
3709 return memcmp(a->session_id, b->session_id, a->session_id_length);
3713 * These wrapper functions should remain rather than redeclaring
3714 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3715 * variable. The reason is that the functions aren't static, they're exposed
3719 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3720 const SSL_METHOD *meth)
3722 SSL_CTX *ret = NULL;
3723 #ifndef OPENSSL_NO_COMP_ALG
3728 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3732 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3735 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3736 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3739 ret = OPENSSL_zalloc(sizeof(*ret));
3743 /* Init the reference counting before any call to SSL_CTX_free */
3744 ret->references = 1;
3745 ret->lock = CRYPTO_THREAD_lock_new();
3746 if (ret->lock == NULL) {
3747 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3751 #ifdef TSAN_REQUIRES_LOCKING
3752 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3753 if (ret->tsan_lock == NULL) {
3754 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3759 ret->libctx = libctx;
3760 if (propq != NULL) {
3761 ret->propq = OPENSSL_strdup(propq);
3762 if (ret->propq == NULL)
3767 ret->min_proto_version = 0;
3768 ret->max_proto_version = 0;
3769 ret->mode = SSL_MODE_AUTO_RETRY;
3770 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3771 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3772 /* We take the system default. */
3773 ret->session_timeout = meth->get_timeout();
3774 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3775 ret->verify_mode = SSL_VERIFY_NONE;
3776 if ((ret->cert = ssl_cert_new()) == NULL) {
3777 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3781 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3782 if (ret->sessions == NULL) {
3783 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3786 ret->cert_store = X509_STORE_new();
3787 if (ret->cert_store == NULL) {
3788 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3791 #ifndef OPENSSL_NO_CT
3792 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3793 if (ret->ctlog_store == NULL) {
3794 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3799 /* initialize cipher/digest methods table */
3800 if (!ssl_load_ciphers(ret))
3802 /* initialise sig algs */
3803 if (!ssl_setup_sig_algs(ret))
3806 if (!ssl_load_groups(ret))
3809 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3810 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3814 if (!ssl_create_cipher_list(ret,
3815 ret->tls13_ciphersuites,
3816 &ret->cipher_list, &ret->cipher_list_by_id,
3817 OSSL_default_cipher_list(), ret->cert)
3818 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3819 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3823 ret->param = X509_VERIFY_PARAM_new();
3824 if (ret->param == NULL) {
3825 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3830 * If these aren't available from the provider we'll get NULL returns.
3831 * That's fine but will cause errors later if SSLv3 is negotiated
3833 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3834 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3836 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3837 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3841 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3842 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3846 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3847 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3851 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3854 /* No compression for DTLS */
3855 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3856 ret->comp_methods = SSL_COMP_get_compression_methods();
3858 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3859 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3861 /* Setup RFC5077 ticket keys */
3862 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3863 sizeof(ret->ext.tick_key_name), 0) <= 0)
3864 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3865 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3866 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3867 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3868 ret->options |= SSL_OP_NO_TICKET;
3870 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3871 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3872 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3876 #ifndef OPENSSL_NO_SRP
3877 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3878 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3882 #ifndef OPENSSL_NO_ENGINE
3883 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3884 # define eng_strx(x) #x
3885 # define eng_str(x) eng_strx(x)
3886 /* Use specific client engine automatically... ignore errors */
3889 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3892 ENGINE_load_builtin_engines();
3893 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3895 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3901 #ifndef OPENSSL_NO_COMP_ALG
3903 * Set the default order: brotli, zlib, zstd
3904 * Including only those enabled algorithms
3906 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3908 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3909 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3910 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3911 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3912 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3913 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3916 * Disable compression by default to prevent CRIME. Applications can
3917 * re-enable compression by configuring
3918 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3919 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3920 * middlebox compatibility by default. This may be disabled by default in
3921 * a later OpenSSL version.
3923 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3925 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3928 * We cannot usefully set a default max_early_data here (which gets
3929 * propagated in SSL_new(), for the following reason: setting the
3930 * SSL field causes tls_construct_stoc_early_data() to tell the
3931 * client that early data will be accepted when constructing a TLS 1.3
3932 * session ticket, and the client will accordingly send us early data
3933 * when using that ticket (if the client has early data to send).
3934 * However, in order for the early data to actually be consumed by
3935 * the application, the application must also have calls to
3936 * SSL_read_early_data(); otherwise we'll just skip past the early data
3937 * and ignore it. So, since the application must add calls to
3938 * SSL_read_early_data(), we also require them to add
3939 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3940 * eliminating the bandwidth-wasting early data in the case described
3943 ret->max_early_data = 0;
3946 * Default recv_max_early_data is a fully loaded single record. Could be
3947 * split across multiple records in practice. We set this differently to
3948 * max_early_data so that, in the default case, we do not advertise any
3949 * support for early_data, but if a client were to send us some (e.g.
3950 * because of an old, stale ticket) then we will tolerate it and skip over
3953 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3955 /* By default we send two session tickets automatically in TLSv1.3 */
3956 ret->num_tickets = 2;
3958 ssl_ctx_system_config(ret);
3966 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3968 return SSL_CTX_new_ex(NULL, NULL, meth);
3971 int SSL_CTX_up_ref(SSL_CTX *ctx)
3975 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3978 REF_PRINT_COUNT("SSL_CTX", ctx);
3979 REF_ASSERT_ISNT(i < 2);
3980 return ((i > 1) ? 1 : 0);
3983 void SSL_CTX_free(SSL_CTX *a)
3991 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3992 REF_PRINT_COUNT("SSL_CTX", a);
3995 REF_ASSERT_ISNT(i < 0);
3997 X509_VERIFY_PARAM_free(a->param);
3998 dane_ctx_final(&a->dane);
4001 * Free internal session cache. However: the remove_cb() may reference
4002 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
4003 * after the sessions were flushed.
4004 * As the ex_data handling routines might also touch the session cache,
4005 * the most secure solution seems to be: empty (flush) the cache, then
4006 * free ex_data, then finally free the cache.
4007 * (See ticket [openssl.org #212].)
4009 if (a->sessions != NULL)
4010 SSL_CTX_flush_sessions(a, 0);
4012 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4013 lh_SSL_SESSION_free(a->sessions);
4014 X509_STORE_free(a->cert_store);
4015 #ifndef OPENSSL_NO_CT
4016 CTLOG_STORE_free(a->ctlog_store);
4018 sk_SSL_CIPHER_free(a->cipher_list);
4019 sk_SSL_CIPHER_free(a->cipher_list_by_id);
4020 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4021 ssl_cert_free(a->cert);
4022 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4023 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4024 OSSL_STACK_OF_X509_free(a->extra_certs);
4025 a->comp_methods = NULL;
4026 #ifndef OPENSSL_NO_SRTP
4027 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4029 #ifndef OPENSSL_NO_SRP
4030 ssl_ctx_srp_ctx_free_intern(a);
4032 #ifndef OPENSSL_NO_ENGINE
4033 tls_engine_finish(a->client_cert_engine);
4036 OPENSSL_free(a->ext.ecpointformats);
4037 OPENSSL_free(a->ext.supportedgroups);
4038 OPENSSL_free(a->ext.supported_groups_default);
4039 OPENSSL_free(a->ext.alpn);
4040 OPENSSL_secure_free(a->ext.secure);
4042 ssl_evp_md_free(a->md5);
4043 ssl_evp_md_free(a->sha1);
4045 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4046 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4047 for (j = 0; j < SSL_MD_NUM_IDX; j++)
4048 ssl_evp_md_free(a->ssl_digest_methods[j]);
4049 for (j = 0; j < a->group_list_len; j++) {
4050 OPENSSL_free(a->group_list[j].tlsname);
4051 OPENSSL_free(a->group_list[j].realname);
4052 OPENSSL_free(a->group_list[j].algorithm);
4054 OPENSSL_free(a->group_list);
4056 OPENSSL_free(a->sigalg_lookup_cache);
4058 CRYPTO_THREAD_lock_free(a->lock);
4059 #ifdef TSAN_REQUIRES_LOCKING
4060 CRYPTO_THREAD_lock_free(a->tsan_lock);
4063 OPENSSL_free(a->propq);
4068 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4070 ctx->default_passwd_callback = cb;
4073 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4075 ctx->default_passwd_callback_userdata = u;
4078 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4080 return ctx->default_passwd_callback;
4083 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4085 return ctx->default_passwd_callback_userdata;
4088 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4090 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4095 sc->default_passwd_callback = cb;
4098 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4100 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4105 sc->default_passwd_callback_userdata = u;
4108 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4110 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4115 return sc->default_passwd_callback;
4118 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4120 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4125 return sc->default_passwd_callback_userdata;
4128 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4129 int (*cb) (X509_STORE_CTX *, void *),
4132 ctx->app_verify_callback = cb;
4133 ctx->app_verify_arg = arg;
4136 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4137 int (*cb) (int, X509_STORE_CTX *))
4139 ctx->verify_mode = mode;
4140 ctx->default_verify_callback = cb;
4143 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4145 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4148 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4150 ssl_cert_set_cert_cb(c->cert, cb, arg);
4153 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4155 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4160 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4163 void ssl_set_masks(SSL_CONNECTION *s)
4166 uint32_t *pvalid = s->s3.tmp.valid_flags;
4167 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4168 unsigned long mask_k, mask_a;
4169 int have_ecc_cert, ecdsa_ok;
4174 dh_tmp = (c->dh_tmp != NULL
4175 || c->dh_tmp_cb != NULL
4178 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4179 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4180 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4181 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4185 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4186 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4188 #ifndef OPENSSL_NO_GOST
4189 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4190 mask_k |= SSL_kGOST | SSL_kGOST18;
4191 mask_a |= SSL_aGOST12;
4193 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4194 mask_k |= SSL_kGOST | SSL_kGOST18;
4195 mask_a |= SSL_aGOST12;
4197 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4198 mask_k |= SSL_kGOST;
4199 mask_a |= SSL_aGOST01;
4210 * If we only have an RSA-PSS certificate allow RSA authentication
4211 * if TLS 1.2 and peer supports it.
4214 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4215 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4216 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4223 mask_a |= SSL_aNULL;
4226 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4227 * depending on the key usage extension.
4229 if (have_ecc_cert) {
4231 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4232 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4233 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4236 mask_a |= SSL_aECDSA;
4238 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4239 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4240 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4241 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4242 mask_a |= SSL_aECDSA;
4244 /* Allow Ed448 for TLS 1.2 if peer supports it */
4245 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4246 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4247 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4248 mask_a |= SSL_aECDSA;
4250 mask_k |= SSL_kECDHE;
4252 #ifndef OPENSSL_NO_PSK
4255 if (mask_k & SSL_kRSA)
4256 mask_k |= SSL_kRSAPSK;
4257 if (mask_k & SSL_kDHE)
4258 mask_k |= SSL_kDHEPSK;
4259 if (mask_k & SSL_kECDHE)
4260 mask_k |= SSL_kECDHEPSK;
4263 s->s3.tmp.mask_k = mask_k;
4264 s->s3.tmp.mask_a = mask_a;
4267 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4269 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4270 /* key usage, if present, must allow signing */
4271 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4272 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4276 return 1; /* all checks are ok */
4279 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4280 const unsigned char **serverinfo,
4281 size_t *serverinfo_length)
4283 CERT_PKEY *cpk = s->s3.tmp.cert;
4284 *serverinfo_length = 0;
4286 if (cpk == NULL || cpk->serverinfo == NULL)
4289 *serverinfo = cpk->serverinfo;
4290 *serverinfo_length = cpk->serverinfo_length;
4294 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4299 * If the session_id_length is 0, we are not supposed to cache it, and it
4300 * would be rather hard to do anyway :-)
4302 if (s->session->session_id_length == 0)
4306 * If sid_ctx_length is 0 there is no specific application context
4307 * associated with this session, so when we try to resume it and
4308 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4309 * indication that this is actually a session for the proper application
4310 * context, and the *handshake* will fail, not just the resumption attempt.
4311 * Do not cache (on the server) these sessions that are not resumable
4312 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4314 if (s->server && s->session->sid_ctx_length == 0
4315 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4318 i = s->session_ctx->session_cache_mode;
4320 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4322 * Add the session to the internal cache. In server side TLSv1.3 we
4323 * normally don't do this because by default it's a full stateless ticket
4324 * with only a dummy session id so there is no reason to cache it,
4326 * - we are doing early_data, in which case we cache so that we can
4328 * - the application has set a remove_session_cb so needs to know about
4329 * session timeout events
4330 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4332 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4333 && (!SSL_CONNECTION_IS_TLS13(s)
4335 || (s->max_early_data > 0
4336 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4337 || s->session_ctx->remove_session_cb != NULL
4338 || (s->options & SSL_OP_NO_TICKET) != 0))
4339 SSL_CTX_add_session(s->session_ctx, s->session);
4342 * Add the session to the external cache. We do this even in server side
4343 * TLSv1.3 without early data because some applications just want to
4344 * know about the creation of a session and aren't doing a full cache.
4346 if (s->session_ctx->new_session_cb != NULL) {
4347 SSL_SESSION_up_ref(s->session);
4348 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4350 SSL_SESSION_free(s->session);
4354 /* auto flush every 255 connections */
4355 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4356 TSAN_QUALIFIER int *stat;
4358 if (mode & SSL_SESS_CACHE_CLIENT)
4359 stat = &s->session_ctx->stats.sess_connect_good;
4361 stat = &s->session_ctx->stats.sess_accept_good;
4362 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4363 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4367 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4372 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4377 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4380 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4382 /* TODO(QUIC): Do we want this for QUIC? */
4384 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4387 if (s->method != meth) {
4388 const SSL_METHOD *sm = s->method;
4389 int (*hf) (SSL *) = sc->handshake_func;
4391 if (sm->version == meth->version)
4396 ret = s->method->ssl_init(s);
4399 if (hf == sm->ssl_connect)
4400 sc->handshake_func = meth->ssl_connect;
4401 else if (hf == sm->ssl_accept)
4402 sc->handshake_func = meth->ssl_accept;
4407 int SSL_get_error(const SSL *s, int i)
4412 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4413 #ifndef OPENSSL_NO_QUIC
4414 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
4418 return SSL_ERROR_NONE;
4420 #ifndef OPENSSL_NO_QUIC
4422 reason = ossl_quic_get_error(qc, i);
4423 if (reason != SSL_ERROR_NONE)
4429 return SSL_ERROR_SSL;
4432 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4433 * where we do encode the error
4435 if ((l = ERR_peek_error()) != 0) {
4436 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4437 return SSL_ERROR_SYSCALL;
4439 return SSL_ERROR_SSL;
4442 #ifndef OPENSSL_NO_QUIC
4446 if (SSL_want_read(s)) {
4447 bio = SSL_get_rbio(s);
4448 if (BIO_should_read(bio))
4449 return SSL_ERROR_WANT_READ;
4450 else if (BIO_should_write(bio))
4452 * This one doesn't make too much sense ... We never try to
4453 * write to the rbio, and an application program where rbio and
4454 * wbio are separate couldn't even know what it should wait for.
4455 * However if we ever set s->rwstate incorrectly (so that we
4456 * have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4457 * and wbio *are* the same, this test works around that bug; so
4458 * it might be safer to keep it.
4460 return SSL_ERROR_WANT_WRITE;
4461 else if (BIO_should_io_special(bio)) {
4462 reason = BIO_get_retry_reason(bio);
4463 if (reason == BIO_RR_CONNECT)
4464 return SSL_ERROR_WANT_CONNECT;
4465 else if (reason == BIO_RR_ACCEPT)
4466 return SSL_ERROR_WANT_ACCEPT;
4468 return SSL_ERROR_SYSCALL; /* unknown */
4472 if (SSL_want_write(s)) {
4474 * Access wbio directly - in order to use the buffered bio if
4478 if (BIO_should_write(bio))
4479 return SSL_ERROR_WANT_WRITE;
4480 else if (BIO_should_read(bio))
4482 * See above (SSL_want_read(s) with BIO_should_write(bio))
4484 return SSL_ERROR_WANT_READ;
4485 else if (BIO_should_io_special(bio)) {
4486 reason = BIO_get_retry_reason(bio);
4487 if (reason == BIO_RR_CONNECT)
4488 return SSL_ERROR_WANT_CONNECT;
4489 else if (reason == BIO_RR_ACCEPT)
4490 return SSL_ERROR_WANT_ACCEPT;
4492 return SSL_ERROR_SYSCALL;
4497 if (SSL_want_x509_lookup(s))
4498 return SSL_ERROR_WANT_X509_LOOKUP;
4499 if (SSL_want_retry_verify(s))
4500 return SSL_ERROR_WANT_RETRY_VERIFY;
4501 if (SSL_want_async(s))
4502 return SSL_ERROR_WANT_ASYNC;
4503 if (SSL_want_async_job(s))
4504 return SSL_ERROR_WANT_ASYNC_JOB;
4505 if (SSL_want_client_hello_cb(s))
4506 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4508 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4509 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4510 return SSL_ERROR_ZERO_RETURN;
4512 return SSL_ERROR_SYSCALL;
4515 static int ssl_do_handshake_intern(void *vargs)
4517 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4519 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4524 return sc->handshake_func(s);
4527 int SSL_do_handshake(SSL *s)
4530 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4531 #ifndef OPENSSL_NO_QUIC
4532 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4535 return ossl_quic_do_handshake(qc);
4538 if (sc->handshake_func == NULL) {
4539 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4543 ossl_statem_check_finish_init(sc, -1);
4545 s->method->ssl_renegotiate_check(s, 0);
4547 if (SSL_in_init(s) || SSL_in_before(s)) {
4548 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4549 struct ssl_async_args args;
4551 memset(&args, 0, sizeof(args));
4554 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4556 ret = sc->handshake_func(s);
4562 void SSL_set_accept_state(SSL *s)
4564 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4565 #ifndef OPENSSL_NO_QUIC
4566 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4569 ossl_quic_set_accept_state(qc);
4576 ossl_statem_clear(sc);
4577 sc->handshake_func = s->method->ssl_accept;
4578 /* Ignore return value. Its a void public API function */
4579 clear_record_layer(sc);
4582 void SSL_set_connect_state(SSL *s)
4584 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4585 #ifndef OPENSSL_NO_QUIC
4586 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4589 ossl_quic_set_connect_state(qc);
4596 ossl_statem_clear(sc);
4597 sc->handshake_func = s->method->ssl_connect;
4598 /* Ignore return value. Its a void public API function */
4599 clear_record_layer(sc);
4602 int ssl_undefined_function(SSL *s)
4604 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4608 int ssl_undefined_void_function(void)
4610 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4614 int ssl_undefined_const_function(const SSL *s)
4619 const SSL_METHOD *ssl_bad_method(int ver)
4621 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4625 const char *ssl_protocol_to_string(int version)
4629 case TLS1_3_VERSION:
4632 case TLS1_2_VERSION:
4635 case TLS1_1_VERSION:
4650 case DTLS1_2_VERSION:
4658 const char *SSL_get_version(const SSL *s)
4660 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4665 return ssl_protocol_to_string(sc->version);
4668 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4670 STACK_OF(X509_NAME) *sk;
4679 if ((sk = sk_X509_NAME_new_null()) == NULL)
4681 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4682 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4684 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4687 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4689 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4698 SSL *SSL_dup(SSL *s)
4702 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4703 SSL_CONNECTION *retsc;
4704 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4709 /* If we're not quiescent, just up_ref! */
4710 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4711 CRYPTO_UP_REF(&s->references, &i, s->lock);
4716 * Otherwise, copy configuration state, and session if set.
4718 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4720 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4723 if (sc->session != NULL) {
4725 * Arranges to share the same session via up_ref. This "copies"
4726 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4728 if (!SSL_copy_session_id(ret, s))
4732 * No session has been established yet, so we have to expect that
4733 * s->cert or ret->cert will be changed later -- they should not both
4734 * point to the same object, and thus we can't use
4735 * SSL_copy_session_id.
4737 if (!SSL_set_ssl_method(ret, s->method))
4740 if (sc->cert != NULL) {
4741 ssl_cert_free(retsc->cert);
4742 retsc->cert = ssl_cert_dup(sc->cert);
4743 if (retsc->cert == NULL)
4747 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4748 (int)sc->sid_ctx_length))
4752 if (!ssl_dane_dup(retsc, sc))
4754 retsc->version = sc->version;
4755 retsc->options = sc->options;
4756 retsc->min_proto_version = sc->min_proto_version;
4757 retsc->max_proto_version = sc->max_proto_version;
4758 retsc->mode = sc->mode;
4759 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4760 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4761 retsc->msg_callback = sc->msg_callback;
4762 retsc->msg_callback_arg = sc->msg_callback_arg;
4763 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4764 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4765 retsc->generate_session_id = sc->generate_session_id;
4767 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4769 /* copy app data, a little dangerous perhaps */
4770 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4773 retsc->server = sc->server;
4774 if (sc->handshake_func) {
4776 SSL_set_accept_state(ret);
4778 SSL_set_connect_state(ret);
4780 retsc->shutdown = sc->shutdown;
4781 retsc->hit = sc->hit;
4783 retsc->default_passwd_callback = sc->default_passwd_callback;
4784 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4786 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4788 /* dup the cipher_list and cipher_list_by_id stacks */
4789 if (sc->cipher_list != NULL) {
4790 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4793 if (sc->cipher_list_by_id != NULL)
4794 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4798 /* Dup the client_CA list */
4799 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4800 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4810 X509 *SSL_get_certificate(const SSL *s)
4812 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4817 if (sc->cert != NULL)
4818 return sc->cert->key->x509;
4823 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4825 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4830 if (sc->cert != NULL)
4831 return sc->cert->key->privatekey;
4836 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4838 if (ctx->cert != NULL)
4839 return ctx->cert->key->x509;
4844 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4846 if (ctx->cert != NULL)
4847 return ctx->cert->key->privatekey;
4852 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4854 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4859 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4860 return sc->session->cipher;
4864 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4866 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4871 return sc->s3.tmp.new_cipher;
4874 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4876 #ifndef OPENSSL_NO_COMP
4877 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4882 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4888 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4890 #ifndef OPENSSL_NO_COMP
4891 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4896 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4902 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4906 if (s->bbio != NULL) {
4907 /* Already buffered. */
4911 bbio = BIO_new(BIO_f_buffer());
4912 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
4914 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4918 s->wbio = BIO_push(bbio, s->wbio);
4920 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4925 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4927 /* callers ensure s is never null */
4928 if (s->bbio == NULL)
4931 s->wbio = BIO_pop(s->wbio);
4932 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4940 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4942 ctx->quiet_shutdown = mode;
4945 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4947 return ctx->quiet_shutdown;
4950 void SSL_set_quiet_shutdown(SSL *s, int mode)
4952 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4954 /* TODO(QUIC): Do we want this for QUIC? */
4958 sc->quiet_shutdown = mode;
4961 int SSL_get_quiet_shutdown(const SSL *s)
4963 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4965 /* TODO(QUIC): Do we want this for QUIC? */
4969 return sc->quiet_shutdown;
4972 void SSL_set_shutdown(SSL *s, int mode)
4974 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4976 /* TODO(QUIC): Do we want this for QUIC? */
4980 sc->shutdown = mode;
4983 int SSL_get_shutdown(const SSL *s)
4985 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4987 /* TODO(QUIC): Do we want this for QUIC? */
4991 return sc->shutdown;
4994 int SSL_version(const SSL *s)
4996 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4998 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5005 int SSL_client_version(const SSL *s)
5007 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5009 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5013 return sc->client_version;
5016 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
5021 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
5024 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5026 /* TODO(QUIC): Do we need this for QUIC support? */
5030 if (ssl->ctx == ctx)
5033 ctx = sc->session_ctx;
5034 new_cert = ssl_cert_dup(ctx->cert);
5035 if (new_cert == NULL) {
5039 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5040 ssl_cert_free(new_cert);
5044 ssl_cert_free(sc->cert);
5045 sc->cert = new_cert;
5048 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5049 * so setter APIs must prevent invalid lengths from entering the system.
5051 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5055 * If the session ID context matches that of the parent SSL_CTX,
5056 * inherit it from the new SSL_CTX as well. If however the context does
5057 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5058 * leave it unchanged.
5060 if ((ssl->ctx != NULL) &&
5061 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5062 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5063 sc->sid_ctx_length = ctx->sid_ctx_length;
5064 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5067 SSL_CTX_up_ref(ctx);
5068 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5074 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5076 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5080 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5082 X509_LOOKUP *lookup;
5084 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5088 /* We ignore errors, in case the directory doesn't exist */
5091 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5098 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5100 X509_LOOKUP *lookup;
5102 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5106 /* We ignore errors, in case the file doesn't exist */
5109 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5117 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5119 X509_LOOKUP *lookup;
5121 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5125 /* We ignore errors, in case the directory doesn't exist */
5128 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5135 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5137 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5141 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5143 return X509_STORE_load_path(ctx->cert_store, CApath);
5146 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5148 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5152 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5155 if (CAfile == NULL && CApath == NULL)
5157 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5159 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5164 void SSL_set_info_callback(SSL *ssl,
5165 void (*cb) (const SSL *ssl, int type, int val))
5167 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5172 sc->info_callback = cb;
5176 * One compiler (Diab DCC) doesn't like argument names in returned function
5179 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5182 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5187 return sc->info_callback;
5190 void SSL_set_verify_result(SSL *ssl, long arg)
5192 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5197 sc->verify_result = arg;
5200 long SSL_get_verify_result(const SSL *ssl)
5202 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5207 return sc->verify_result;
5210 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5212 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5218 return sizeof(sc->s3.client_random);
5219 if (outlen > sizeof(sc->s3.client_random))
5220 outlen = sizeof(sc->s3.client_random);
5221 memcpy(out, sc->s3.client_random, outlen);
5225 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5227 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5233 return sizeof(sc->s3.server_random);
5234 if (outlen > sizeof(sc->s3.server_random))
5235 outlen = sizeof(sc->s3.server_random);
5236 memcpy(out, sc->s3.server_random, outlen);
5240 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5241 unsigned char *out, size_t outlen)
5244 return session->master_key_length;
5245 if (outlen > session->master_key_length)
5246 outlen = session->master_key_length;
5247 memcpy(out, session->master_key, outlen);
5251 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5254 if (len > sizeof(sess->master_key))
5257 memcpy(sess->master_key, in, len);
5258 sess->master_key_length = len;
5263 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5265 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5268 void *SSL_get_ex_data(const SSL *s, int idx)
5270 return CRYPTO_get_ex_data(&s->ex_data, idx);
5273 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5275 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5278 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5280 return CRYPTO_get_ex_data(&s->ex_data, idx);
5283 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5285 return ctx->cert_store;
5288 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5290 X509_STORE_free(ctx->cert_store);
5291 ctx->cert_store = store;
5294 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5297 X509_STORE_up_ref(store);
5298 SSL_CTX_set_cert_store(ctx, store);
5301 int SSL_want(const SSL *s)
5303 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5311 #ifndef OPENSSL_NO_PSK
5312 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5314 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5315 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5318 OPENSSL_free(ctx->cert->psk_identity_hint);
5319 if (identity_hint != NULL) {
5320 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5321 if (ctx->cert->psk_identity_hint == NULL)
5324 ctx->cert->psk_identity_hint = NULL;
5328 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5330 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5335 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5336 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5339 OPENSSL_free(sc->cert->psk_identity_hint);
5340 if (identity_hint != NULL) {
5341 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5342 if (sc->cert->psk_identity_hint == NULL)
5345 sc->cert->psk_identity_hint = NULL;
5349 const char *SSL_get_psk_identity_hint(const SSL *s)
5351 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5353 if (sc == NULL || sc->session == NULL)
5356 return sc->session->psk_identity_hint;
5359 const char *SSL_get_psk_identity(const SSL *s)
5361 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5363 if (sc == NULL || sc->session == NULL)
5366 return sc->session->psk_identity;
5369 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5371 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5376 sc->psk_client_callback = cb;
5379 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5381 ctx->psk_client_callback = cb;
5384 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5386 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5391 sc->psk_server_callback = cb;
5394 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5396 ctx->psk_server_callback = cb;
5400 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5402 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5407 sc->psk_find_session_cb = cb;
5410 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5411 SSL_psk_find_session_cb_func cb)
5413 ctx->psk_find_session_cb = cb;
5416 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5418 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5423 sc->psk_use_session_cb = cb;
5426 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5427 SSL_psk_use_session_cb_func cb)
5429 ctx->psk_use_session_cb = cb;
5432 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5433 void (*cb) (int write_p, int version,
5434 int content_type, const void *buf,
5435 size_t len, SSL *ssl, void *arg))
5437 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5440 void SSL_set_msg_callback(SSL *ssl,
5441 void (*cb) (int write_p, int version,
5442 int content_type, const void *buf,
5443 size_t len, SSL *ssl, void *arg))
5445 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5448 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5449 int (*cb) (SSL *ssl,
5453 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5454 (void (*)(void))cb);
5457 void SSL_set_not_resumable_session_callback(SSL *ssl,
5458 int (*cb) (SSL *ssl,
5459 int is_forward_secure))
5461 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5462 (void (*)(void))cb);
5465 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5466 size_t (*cb) (SSL *ssl, int type,
5467 size_t len, void *arg))
5469 ctx->record_padding_cb = cb;
5472 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5474 ctx->record_padding_arg = arg;
5477 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5479 return ctx->record_padding_arg;
5482 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5484 /* block size of 0 or 1 is basically no padding */
5485 if (block_size == 1)
5486 ctx->block_padding = 0;
5487 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5488 ctx->block_padding = block_size;
5494 int SSL_set_record_padding_callback(SSL *ssl,
5495 size_t (*cb) (SSL *ssl, int type,
5496 size_t len, void *arg))
5499 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5504 b = SSL_get_wbio(ssl);
5505 if (b == NULL || !BIO_get_ktls_send(b)) {
5506 sc->rlayer.record_padding_cb = cb;
5512 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5514 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5519 sc->rlayer.record_padding_arg = arg;
5522 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5524 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5529 return sc->rlayer.record_padding_arg;
5532 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5534 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5539 /* block size of 0 or 1 is basically no padding */
5540 if (block_size == 1)
5541 sc->rlayer.block_padding = 0;
5542 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5543 sc->rlayer.block_padding = block_size;
5549 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5551 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5556 sc->num_tickets = num_tickets;
5561 size_t SSL_get_num_tickets(const SSL *s)
5563 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5568 return sc->num_tickets;
5571 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5573 ctx->num_tickets = num_tickets;
5578 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5580 return ctx->num_tickets;
5583 /* Retrieve handshake hashes */
5584 int ssl_handshake_hash(SSL_CONNECTION *s,
5585 unsigned char *out, size_t outlen,
5588 EVP_MD_CTX *ctx = NULL;
5589 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5590 int hashleni = EVP_MD_CTX_get_size(hdgst);
5593 if (hashleni < 0 || (size_t)hashleni > outlen) {
5594 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5598 ctx = EVP_MD_CTX_new();
5600 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5604 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5605 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5606 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5610 *hashlen = hashleni;
5614 EVP_MD_CTX_free(ctx);
5618 int SSL_session_reused(const SSL *s)
5620 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5628 int SSL_is_server(const SSL *s)
5630 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5638 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5639 void SSL_set_debug(SSL *s, int debug)
5641 /* Old function was do-nothing anyway... */
5647 void SSL_set_security_level(SSL *s, int level)
5649 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5654 sc->cert->sec_level = level;
5657 int SSL_get_security_level(const SSL *s)
5659 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5664 return sc->cert->sec_level;
5667 void SSL_set_security_callback(SSL *s,
5668 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5669 int op, int bits, int nid,
5670 void *other, void *ex))
5672 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5677 sc->cert->sec_cb = cb;
5680 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5681 const SSL_CTX *ctx, int op,
5682 int bits, int nid, void *other,
5684 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5689 return sc->cert->sec_cb;
5692 void SSL_set0_security_ex_data(SSL *s, void *ex)
5694 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5699 sc->cert->sec_ex = ex;
5702 void *SSL_get0_security_ex_data(const SSL *s)
5704 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5709 return sc->cert->sec_ex;
5712 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5714 ctx->cert->sec_level = level;
5717 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5719 return ctx->cert->sec_level;
5722 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5723 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5724 int op, int bits, int nid,
5725 void *other, void *ex))
5727 ctx->cert->sec_cb = cb;
5730 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5736 return ctx->cert->sec_cb;
5739 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5741 ctx->cert->sec_ex = ex;
5744 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5746 return ctx->cert->sec_ex;
5749 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5751 return ctx->options;
5754 uint64_t SSL_get_options(const SSL *s)
5756 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5764 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5766 return ctx->options |= op;
5769 uint64_t SSL_set_options(SSL *s, uint64_t op)
5771 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5772 OSSL_PARAM options[2], *opts = options;
5779 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5781 *opts = OSSL_PARAM_construct_end();
5783 /* Ignore return value */
5784 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5789 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5791 return ctx->options &= ~op;
5794 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5796 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5801 return sc->options &= ~op;
5804 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5806 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5811 return sc->verified_chain;
5814 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5816 #ifndef OPENSSL_NO_CT
5819 * Moves SCTs from the |src| stack to the |dst| stack.
5820 * The source of each SCT will be set to |origin|.
5821 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5823 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5825 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5826 sct_source_t origin)
5832 *dst = sk_SCT_new_null();
5834 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5839 while ((sct = sk_SCT_pop(src)) != NULL) {
5840 if (SCT_set_source(sct, origin) != 1)
5843 if (sk_SCT_push(*dst, sct) <= 0)
5851 sk_SCT_push(src, sct); /* Put the SCT back */
5856 * Look for data collected during ServerHello and parse if found.
5857 * Returns the number of SCTs extracted.
5859 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5861 int scts_extracted = 0;
5863 if (s->ext.scts != NULL) {
5864 const unsigned char *p = s->ext.scts;
5865 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5867 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5869 SCT_LIST_free(scts);
5872 return scts_extracted;
5876 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5877 * contains an SCT X509 extension. They will be stored in |s->scts|.
5879 * - The number of SCTs extracted, assuming an OCSP response exists.
5880 * - 0 if no OCSP response exists or it contains no SCTs.
5881 * - A negative integer if an error occurs.
5883 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5885 # ifndef OPENSSL_NO_OCSP
5886 int scts_extracted = 0;
5887 const unsigned char *p;
5888 OCSP_BASICRESP *br = NULL;
5889 OCSP_RESPONSE *rsp = NULL;
5890 STACK_OF(SCT) *scts = NULL;
5893 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5896 p = s->ext.ocsp.resp;
5897 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5901 br = OCSP_response_get1_basic(rsp);
5905 for (i = 0; i < OCSP_resp_count(br); ++i) {
5906 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5912 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5914 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5915 if (scts_extracted < 0)
5919 SCT_LIST_free(scts);
5920 OCSP_BASICRESP_free(br);
5921 OCSP_RESPONSE_free(rsp);
5922 return scts_extracted;
5924 /* Behave as if no OCSP response exists */
5930 * Attempts to extract SCTs from the peer certificate.
5931 * Return the number of SCTs extracted, or a negative integer if an error
5934 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5936 int scts_extracted = 0;
5937 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5940 STACK_OF(SCT) *scts =
5941 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5944 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5946 SCT_LIST_free(scts);
5949 return scts_extracted;
5953 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5954 * response (if it exists) and X509v3 extensions in the certificate.
5955 * Returns NULL if an error occurs.
5957 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5959 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5964 if (!sc->scts_parsed) {
5965 if (ct_extract_tls_extension_scts(sc) < 0 ||
5966 ct_extract_ocsp_response_scts(sc) < 0 ||
5967 ct_extract_x509v3_extension_scts(sc) < 0)
5970 sc->scts_parsed = 1;
5977 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5978 const STACK_OF(SCT) *scts, void *unused_arg)
5983 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5984 const STACK_OF(SCT) *scts, void *unused_arg)
5986 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5989 for (i = 0; i < count; ++i) {
5990 SCT *sct = sk_SCT_value(scts, i);
5991 int status = SCT_get_validation_status(sct);
5993 if (status == SCT_VALIDATION_STATUS_VALID)
5996 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
6000 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
6003 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6009 * Since code exists that uses the custom extension handler for CT, look
6010 * for this and throw an error if they have already registered to use CT.
6012 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6013 TLSEXT_TYPE_signed_certificate_timestamp))
6015 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6019 if (callback != NULL) {
6021 * If we are validating CT, then we MUST accept SCTs served via OCSP
6023 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6027 sc->ct_validation_callback = callback;
6028 sc->ct_validation_callback_arg = arg;
6033 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6034 ssl_ct_validation_cb callback, void *arg)
6037 * Since code exists that uses the custom extension handler for CT, look for
6038 * this and throw an error if they have already registered to use CT.
6040 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6041 TLSEXT_TYPE_signed_certificate_timestamp))
6043 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6047 ctx->ct_validation_callback = callback;
6048 ctx->ct_validation_callback_arg = arg;
6052 int SSL_ct_is_enabled(const SSL *s)
6054 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6059 return sc->ct_validation_callback != NULL;
6062 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6064 return ctx->ct_validation_callback != NULL;
6067 int ssl_validate_ct(SSL_CONNECTION *s)
6070 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6072 SSL_DANE *dane = &s->dane;
6073 CT_POLICY_EVAL_CTX *ctx = NULL;
6074 const STACK_OF(SCT) *scts;
6077 * If no callback is set, the peer is anonymous, or its chain is invalid,
6078 * skip SCT validation - just return success. Applications that continue
6079 * handshakes without certificates, with unverified chains, or pinned leaf
6080 * certificates are outside the scope of the WebPKI and CT.
6082 * The above exclusions notwithstanding the vast majority of peers will
6083 * have rather ordinary certificate chains validated by typical
6084 * applications that perform certificate verification and therefore will
6085 * process SCTs when enabled.
6087 if (s->ct_validation_callback == NULL || cert == NULL ||
6088 s->verify_result != X509_V_OK ||
6089 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6093 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6094 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6096 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6097 switch (dane->mtlsa->usage) {
6098 case DANETLS_USAGE_DANE_TA:
6099 case DANETLS_USAGE_DANE_EE:
6104 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6105 SSL_CONNECTION_GET_CTX(s)->propq);
6107 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6111 issuer = sk_X509_value(s->verified_chain, 1);
6112 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6113 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6114 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6115 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6116 CT_POLICY_EVAL_CTX_set_time(
6117 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6119 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6122 * This function returns success (> 0) only when all the SCTs are valid, 0
6123 * when some are invalid, and < 0 on various internal errors (out of
6124 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6125 * reason to abort the handshake, that decision is up to the callback.
6126 * Therefore, we error out only in the unexpected case that the return
6127 * value is negative.
6129 * XXX: One might well argue that the return value of this function is an
6130 * unfortunate design choice. Its job is only to determine the validation
6131 * status of each of the provided SCTs. So long as it correctly separates
6132 * the wheat from the chaff it should return success. Failure in this case
6133 * ought to correspond to an inability to carry out its duties.
6135 if (SCT_LIST_validate(scts, ctx) < 0) {
6136 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6140 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6142 ret = 0; /* This function returns 0 on failure */
6144 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6147 CT_POLICY_EVAL_CTX_free(ctx);
6149 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6150 * failure return code here. Also the application may wish the complete
6151 * the handshake, and then disconnect cleanly at a higher layer, after
6152 * checking the verification status of the completed connection.
6154 * We therefore force a certificate verification failure which will be
6155 * visible via SSL_get_verify_result() and cached as part of any resumed
6158 * Note: the permissive callback is for information gathering only, always
6159 * returns success, and does not affect verification status. Only the
6160 * strict callback or a custom application-specified callback can trigger
6161 * connection failure or record a verification error.
6164 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6168 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6170 switch (validation_mode) {
6172 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6174 case SSL_CT_VALIDATION_PERMISSIVE:
6175 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6176 case SSL_CT_VALIDATION_STRICT:
6177 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6181 int SSL_enable_ct(SSL *s, int validation_mode)
6183 switch (validation_mode) {
6185 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6187 case SSL_CT_VALIDATION_PERMISSIVE:
6188 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6189 case SSL_CT_VALIDATION_STRICT:
6190 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6194 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6196 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6199 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6201 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6204 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6206 CTLOG_STORE_free(ctx->ctlog_store);
6207 ctx->ctlog_store = logs;
6210 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6212 return ctx->ctlog_store;
6215 #endif /* OPENSSL_NO_CT */
6217 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6220 c->client_hello_cb = cb;
6221 c->client_hello_cb_arg = arg;
6224 int SSL_client_hello_isv2(SSL *s)
6226 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6231 if (sc->clienthello == NULL)
6233 return sc->clienthello->isv2;
6236 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6238 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6243 if (sc->clienthello == NULL)
6245 return sc->clienthello->legacy_version;
6248 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6250 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6255 if (sc->clienthello == NULL)
6258 *out = sc->clienthello->random;
6259 return SSL3_RANDOM_SIZE;
6262 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6264 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6269 if (sc->clienthello == NULL)
6272 *out = sc->clienthello->session_id;
6273 return sc->clienthello->session_id_len;
6276 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6278 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6283 if (sc->clienthello == NULL)
6286 *out = PACKET_data(&sc->clienthello->ciphersuites);
6287 return PACKET_remaining(&sc->clienthello->ciphersuites);
6290 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6292 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6297 if (sc->clienthello == NULL)
6300 *out = sc->clienthello->compressions;
6301 return sc->clienthello->compressions_len;
6304 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6309 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6314 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6316 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6317 ext = sc->clienthello->pre_proc_exts + i;
6326 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6328 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6329 ext = sc->clienthello->pre_proc_exts + i;
6331 if (ext->received_order >= num)
6333 present[ext->received_order] = ext->type;
6340 OPENSSL_free(present);
6344 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6348 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6353 if (sc->clienthello == NULL || num_exts == NULL)
6355 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6356 ext = sc->clienthello->pre_proc_exts + i;
6368 if (*num_exts < num)
6370 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6371 ext = sc->clienthello->pre_proc_exts + i;
6373 if (ext->received_order >= num)
6375 exts[ext->received_order] = ext->type;
6382 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6387 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6392 if (sc->clienthello == NULL)
6394 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6395 r = sc->clienthello->pre_proc_exts + i;
6396 if (r->present && r->type == type) {
6398 *out = PACKET_data(&r->data);
6400 *outlen = PACKET_remaining(&r->data);
6407 int SSL_free_buffers(SSL *ssl)
6410 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6417 return rl->rrlmethod->free_buffers(rl->rrl)
6418 && rl->wrlmethod->free_buffers(rl->wrl);
6421 int SSL_alloc_buffers(SSL *ssl)
6424 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6431 return rl->rrlmethod->alloc_buffers(rl->rrl)
6432 && rl->wrlmethod->alloc_buffers(rl->wrl);
6435 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6437 ctx->keylog_callback = cb;
6440 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6442 return ctx->keylog_callback;
6445 static int nss_keylog_int(const char *prefix,
6447 const uint8_t *parameter_1,
6448 size_t parameter_1_len,
6449 const uint8_t *parameter_2,
6450 size_t parameter_2_len)
6453 char *cursor = NULL;
6457 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6459 if (sctx->keylog_callback == NULL)
6463 * Our output buffer will contain the following strings, rendered with
6464 * space characters in between, terminated by a NULL character: first the
6465 * prefix, then the first parameter, then the second parameter. The
6466 * meaning of each parameter depends on the specific key material being
6467 * logged. Note that the first and second parameters are encoded in
6468 * hexadecimal, so we need a buffer that is twice their lengths.
6470 prefix_len = strlen(prefix);
6471 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6472 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6475 strcpy(cursor, prefix);
6476 cursor += prefix_len;
6479 for (i = 0; i < parameter_1_len; i++) {
6480 sprintf(cursor, "%02x", parameter_1[i]);
6485 for (i = 0; i < parameter_2_len; i++) {
6486 sprintf(cursor, "%02x", parameter_2[i]);
6491 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6492 OPENSSL_clear_free(out, out_len);
6497 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6498 const uint8_t *encrypted_premaster,
6499 size_t encrypted_premaster_len,
6500 const uint8_t *premaster,
6501 size_t premaster_len)
6503 if (encrypted_premaster_len < 8) {
6504 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6508 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6509 return nss_keylog_int("RSA",
6511 encrypted_premaster,
6517 int ssl_log_secret(SSL_CONNECTION *sc,
6519 const uint8_t *secret,
6522 return nss_keylog_int(label,
6524 sc->s3.client_random,
6530 #define SSLV2_CIPHER_LEN 3
6532 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6536 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6538 if (PACKET_remaining(cipher_suites) == 0) {
6539 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6543 if (PACKET_remaining(cipher_suites) % n != 0) {
6544 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6548 OPENSSL_free(s->s3.tmp.ciphers_raw);
6549 s->s3.tmp.ciphers_raw = NULL;
6550 s->s3.tmp.ciphers_rawlen = 0;
6553 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6554 PACKET sslv2ciphers = *cipher_suites;
6555 unsigned int leadbyte;
6559 * We store the raw ciphers list in SSLv3+ format so we need to do some
6560 * preprocessing to convert the list first. If there are any SSLv2 only
6561 * ciphersuites with a non-zero leading byte then we are going to
6562 * slightly over allocate because we won't store those. But that isn't a
6565 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6566 s->s3.tmp.ciphers_raw = raw;
6568 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6571 for (s->s3.tmp.ciphers_rawlen = 0;
6572 PACKET_remaining(&sslv2ciphers) > 0;
6573 raw += TLS_CIPHER_LEN) {
6574 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6576 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6579 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6580 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6581 OPENSSL_free(s->s3.tmp.ciphers_raw);
6582 s->s3.tmp.ciphers_raw = NULL;
6583 s->s3.tmp.ciphers_rawlen = 0;
6587 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6589 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6590 &s->s3.tmp.ciphers_rawlen)) {
6591 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6597 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6598 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6599 STACK_OF(SSL_CIPHER) **scsvs)
6602 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6607 if (!PACKET_buf_init(&pkt, bytes, len))
6609 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6612 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6613 STACK_OF(SSL_CIPHER) **skp,
6614 STACK_OF(SSL_CIPHER) **scsvs_out,
6615 int sslv2format, int fatal)
6617 const SSL_CIPHER *c;
6618 STACK_OF(SSL_CIPHER) *sk = NULL;
6619 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6621 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6622 unsigned char cipher[SSLV2_CIPHER_LEN];
6624 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6626 if (PACKET_remaining(cipher_suites) == 0) {
6628 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6630 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6634 if (PACKET_remaining(cipher_suites) % n != 0) {
6636 SSLfatal(s, SSL_AD_DECODE_ERROR,
6637 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6639 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6643 sk = sk_SSL_CIPHER_new_null();
6644 scsvs = sk_SSL_CIPHER_new_null();
6645 if (sk == NULL || scsvs == NULL) {
6647 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6649 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6653 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6655 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6656 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6657 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6659 if (sslv2format && cipher[0] != '\0')
6662 /* For SSLv2-compat, ignore leading 0-byte. */
6663 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6665 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6666 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6668 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6670 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6675 if (PACKET_remaining(cipher_suites) > 0) {
6677 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6679 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6686 sk_SSL_CIPHER_free(sk);
6687 if (scsvs_out != NULL)
6690 sk_SSL_CIPHER_free(scsvs);
6693 sk_SSL_CIPHER_free(sk);
6694 sk_SSL_CIPHER_free(scsvs);
6698 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6700 ctx->max_early_data = max_early_data;
6705 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6707 return ctx->max_early_data;
6710 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6712 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6717 sc->max_early_data = max_early_data;
6722 uint32_t SSL_get_max_early_data(const SSL *s)
6724 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6729 return sc->max_early_data;
6732 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6734 ctx->recv_max_early_data = recv_max_early_data;
6739 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6741 return ctx->recv_max_early_data;
6744 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6746 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6751 sc->recv_max_early_data = recv_max_early_data;
6756 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6758 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6763 return sc->recv_max_early_data;
6766 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6768 /* Return any active Max Fragment Len extension */
6769 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6770 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6772 /* return current SSL connection setting */
6773 return sc->max_send_fragment;
6776 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6778 /* Return a value regarding an active Max Fragment Len extension */
6779 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6780 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6781 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6783 /* else limit |split_send_fragment| to current |max_send_fragment| */
6784 if (sc->split_send_fragment > sc->max_send_fragment)
6785 return sc->max_send_fragment;
6787 /* return current SSL connection setting */
6788 return sc->split_send_fragment;
6791 int SSL_stateless(SSL *s)
6794 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6796 /* TODO(QUIC): This will need further work. */
6800 /* Ensure there is no state left over from a previous invocation */
6806 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6807 ret = SSL_accept(s);
6808 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6810 if (ret > 0 && sc->ext.cookieok)
6813 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6819 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6821 ctx->pha_enabled = val;
6824 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6826 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6831 sc->pha_enabled = val;
6834 int SSL_verify_client_post_handshake(SSL *ssl)
6836 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6841 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6842 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6846 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6850 if (!SSL_is_init_finished(ssl)) {
6851 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6855 switch (sc->post_handshake_auth) {
6857 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6860 case SSL_PHA_EXT_SENT:
6861 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6863 case SSL_PHA_EXT_RECEIVED:
6865 case SSL_PHA_REQUEST_PENDING:
6866 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6868 case SSL_PHA_REQUESTED:
6869 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6873 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6875 /* checks verify_mode and algorithm_auth */
6876 if (!send_certificate_request(sc)) {
6877 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6878 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6882 ossl_statem_set_in_init(sc, 1);
6886 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6887 SSL_CTX_generate_session_ticket_fn gen_cb,
6888 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6891 ctx->generate_ticket_cb = gen_cb;
6892 ctx->decrypt_ticket_cb = dec_cb;
6893 ctx->ticket_cb_data = arg;
6897 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6898 SSL_allow_early_data_cb_fn cb,
6901 ctx->allow_early_data_cb = cb;
6902 ctx->allow_early_data_cb_data = arg;
6905 void SSL_set_allow_early_data_cb(SSL *s,
6906 SSL_allow_early_data_cb_fn cb,
6909 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6914 sc->allow_early_data_cb = cb;
6915 sc->allow_early_data_cb_data = arg;
6918 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6920 const char *properties)
6922 const EVP_CIPHER *ciph;
6924 ciph = tls_get_cipher_from_engine(nid);
6929 * If there is no engine cipher then we do an explicit fetch. This may fail
6930 * and that could be ok
6933 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6939 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6941 /* Don't up-ref an implicit EVP_CIPHER */
6942 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6946 * The cipher was explicitly fetched and therefore it is safe to cast
6949 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6952 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6957 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6959 * The cipher was explicitly fetched and therefore it is safe to cast
6962 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6966 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6968 const char *properties)
6972 md = tls_get_digest_from_engine(nid);
6976 /* Otherwise we do an explicit fetch */
6978 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6983 int ssl_evp_md_up_ref(const EVP_MD *md)
6985 /* Don't up-ref an implicit EVP_MD */
6986 if (EVP_MD_get0_provider(md) == NULL)
6990 * The digest was explicitly fetched and therefore it is safe to cast
6993 return EVP_MD_up_ref((EVP_MD *)md);
6996 void ssl_evp_md_free(const EVP_MD *md)
7001 if (EVP_MD_get0_provider(md) != NULL) {
7003 * The digest was explicitly fetched and therefore it is safe to cast
7006 EVP_MD_free((EVP_MD *)md);
7010 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
7012 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7017 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7018 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7019 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7022 EVP_PKEY_free(sc->cert->dh_tmp);
7023 sc->cert->dh_tmp = dhpkey;
7027 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
7029 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7030 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7031 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7034 EVP_PKEY_free(ctx->cert->dh_tmp);
7035 ctx->cert->dh_tmp = dhpkey;
7039 /* QUIC-specific methods which are supported on QUIC connections only. */
7040 int SSL_tick(SSL *s)
7043 #ifndef OPENSSL_NO_QUIC
7044 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7047 return ossl_quic_tick(qc);
7050 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7051 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7053 * DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7054 * which we consider a success case. Theoretically DTLSv1_handle_timeout
7055 * can also return 0 if s is NULL or not a DTLS object, but we've
7056 * already ruled out those possibilities above, so this is not possible
7057 * here. Thus the only failure cases are where DTLSv1_handle_timeout
7060 return DTLSv1_handle_timeout(s) >= 0;
7065 int SSL_get_tick_timeout(SSL *s, struct timeval *tv)
7068 #ifndef OPENSSL_NO_QUIC
7069 QUIC_CONNECTION *qc;
7071 qc = QUIC_CONNECTION_FROM_SSL(s);
7073 return ossl_quic_get_tick_timeout(qc, tv);
7076 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7077 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7078 && DTLSv1_get_timeout(s, tv))
7086 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7088 #ifndef OPENSSL_NO_QUIC
7089 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7094 return ossl_quic_get_rpoll_descriptor(qc, desc);
7100 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7102 #ifndef OPENSSL_NO_QUIC
7103 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7108 return ossl_quic_get_wpoll_descriptor(qc, desc);
7114 int SSL_net_read_desired(SSL *s)
7116 #ifndef OPENSSL_NO_QUIC
7117 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7122 return ossl_quic_get_net_read_desired(qc);
7128 int SSL_net_write_desired(SSL *s)
7130 #ifndef OPENSSL_NO_QUIC
7131 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7136 return ossl_quic_get_net_write_desired(qc);
7142 int SSL_set_blocking_mode(SSL *s, int blocking)
7144 #ifndef OPENSSL_NO_QUIC
7145 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7150 return ossl_quic_conn_set_blocking_mode(qc, blocking);
7156 int SSL_get_blocking_mode(SSL *s)
7158 #ifndef OPENSSL_NO_QUIC
7159 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7164 return ossl_quic_conn_get_blocking_mode(qc);
7170 int SSL_set_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr)
7172 #ifndef OPENSSL_NO_QUIC
7173 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7178 return ossl_quic_conn_set_initial_peer_addr(qc, peer_addr);