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,
557 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
558 NID_undef, 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,
565 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
566 NID_undef, NULL, NULL);
567 /* SSLfatal already called in the event of failure */
571 int SSL_clear(SSL *s)
573 if (s->method == NULL) {
574 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
578 return s->method->ssl_reset(s);
581 int ossl_ssl_connection_reset(SSL *s)
583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
588 if (ssl_clear_bad_session(sc)) {
589 SSL_SESSION_free(sc->session);
592 SSL_SESSION_free(sc->psksession);
593 sc->psksession = NULL;
594 OPENSSL_free(sc->psksession_id);
595 sc->psksession_id = NULL;
596 sc->psksession_id_len = 0;
597 sc->hello_retry_request = 0;
598 sc->sent_tickets = 0;
604 if (sc->renegotiate) {
605 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
609 ossl_statem_clear(sc);
611 /* TODO(QUIC): Version handling not yet clear */
612 sc->version = s->method->version;
613 sc->client_version = sc->version;
614 sc->rwstate = SSL_NOTHING;
616 BUF_MEM_free(sc->init_buf);
618 sc->first_packet = 0;
620 sc->key_update = SSL_KEY_UPDATE_NONE;
621 memset(sc->ext.compress_certificate_from_peer, 0,
622 sizeof(sc->ext.compress_certificate_from_peer));
623 sc->ext.compress_certificate_sent = 0;
625 EVP_MD_CTX_free(sc->pha_dgst);
628 /* Reset DANE verification result state */
631 X509_free(sc->dane.mcert);
632 sc->dane.mcert = NULL;
633 sc->dane.mtlsa = NULL;
635 /* Clear the verification result peername */
636 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
638 /* Clear any shared connection state */
639 OPENSSL_free(sc->shared_sigalgs);
640 sc->shared_sigalgs = NULL;
641 sc->shared_sigalgslen = 0;
644 * Check to see if we were changed into a different method, if so, revert
647 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
648 s->method->ssl_deinit(s);
649 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
650 if (!s->method->ssl_init(s))
653 if (!s->method->ssl_clear(s))
657 RECORD_LAYER_clear(&sc->rlayer);
658 BIO_free(sc->rlayer.rrlnext);
659 sc->rlayer.rrlnext = NULL;
661 if (!clear_record_layer(sc))
667 #ifndef OPENSSL_NO_DEPRECATED_3_0
668 /** Used to change an SSL_CTXs default SSL method type */
669 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
671 STACK_OF(SSL_CIPHER) *sk;
675 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
676 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
679 sk = ssl_create_cipher_list(ctx,
680 ctx->tls13_ciphersuites,
682 &(ctx->cipher_list_by_id),
683 OSSL_default_cipher_list(), ctx->cert);
684 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
685 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
692 SSL *SSL_new(SSL_CTX *ctx)
695 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
698 if (ctx->method == NULL) {
699 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
702 return ctx->method->ssl_new(ctx);
705 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
710 ssl->lock = CRYPTO_THREAD_lock_new();
711 if (ssl->lock == NULL)
717 ssl->method = ctx->method;
719 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
725 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
730 s = OPENSSL_zalloc(sizeof(*s));
735 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
741 #ifndef OPENSSL_NO_QUIC
742 /* set the parent (user visible) ssl to self */
746 RECORD_LAYER_init(&s->rlayer, s);
748 s->options = ctx->options;
749 s->dane.flags = ctx->dane.flags;
750 s->min_proto_version = ctx->min_proto_version;
751 s->max_proto_version = ctx->max_proto_version;
753 s->max_cert_list = ctx->max_cert_list;
754 s->max_early_data = ctx->max_early_data;
755 s->recv_max_early_data = ctx->recv_max_early_data;
756 s->num_tickets = ctx->num_tickets;
757 s->pha_enabled = ctx->pha_enabled;
759 /* Shallow copy of the ciphersuites stack */
760 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
761 if (s->tls13_ciphersuites == NULL)
765 * Earlier library versions used to copy the pointer to the CERT, not
766 * its contents; only when setting new parameters for the per-SSL
767 * copy, ssl_cert_new would be called (and the direct reference to
768 * the per-SSL_CTX settings would be lost, but those still were
769 * indirectly accessed for various purposes, and for that reason they
770 * used to be known as s->ctx->default_cert). Now we don't look at the
771 * SSL_CTX's CERT after having duplicated it once.
773 s->cert = ssl_cert_dup(ctx->cert);
777 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
778 s->msg_callback = ctx->msg_callback;
779 s->msg_callback_arg = ctx->msg_callback_arg;
780 s->verify_mode = ctx->verify_mode;
781 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
782 s->rlayer.record_padding_cb = ctx->record_padding_cb;
783 s->rlayer.record_padding_arg = ctx->record_padding_arg;
784 s->rlayer.block_padding = ctx->block_padding;
785 s->sid_ctx_length = ctx->sid_ctx_length;
786 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
788 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
789 s->verify_callback = ctx->default_verify_callback;
790 s->generate_session_id = ctx->generate_session_id;
792 s->param = X509_VERIFY_PARAM_new();
793 if (s->param == NULL)
795 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
796 s->quiet_shutdown = ctx->quiet_shutdown;
798 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
799 s->max_send_fragment = ctx->max_send_fragment;
800 s->split_send_fragment = ctx->split_send_fragment;
801 s->max_pipelines = ctx->max_pipelines;
802 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
805 s->ext.debug_arg = NULL;
806 s->ext.ticket_expected = 0;
807 s->ext.status_type = ctx->ext.status_type;
808 s->ext.status_expected = 0;
809 s->ext.ocsp.ids = NULL;
810 s->ext.ocsp.exts = NULL;
811 s->ext.ocsp.resp = NULL;
812 s->ext.ocsp.resp_len = 0;
814 s->session_ctx = ctx;
815 if (ctx->ext.ecpointformats) {
816 s->ext.ecpointformats =
817 OPENSSL_memdup(ctx->ext.ecpointformats,
818 ctx->ext.ecpointformats_len);
819 if (!s->ext.ecpointformats) {
820 s->ext.ecpointformats_len = 0;
823 s->ext.ecpointformats_len =
824 ctx->ext.ecpointformats_len;
826 if (ctx->ext.supportedgroups) {
827 s->ext.supportedgroups =
828 OPENSSL_memdup(ctx->ext.supportedgroups,
829 ctx->ext.supportedgroups_len
830 * sizeof(*ctx->ext.supportedgroups));
831 if (!s->ext.supportedgroups) {
832 s->ext.supportedgroups_len = 0;
835 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
838 #ifndef OPENSSL_NO_NEXTPROTONEG
842 if (ctx->ext.alpn != NULL) {
843 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
844 if (s->ext.alpn == NULL) {
848 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
849 s->ext.alpn_len = ctx->ext.alpn_len;
852 s->verified_chain = NULL;
853 s->verify_result = X509_V_OK;
855 s->default_passwd_callback = ctx->default_passwd_callback;
856 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
858 s->key_update = SSL_KEY_UPDATE_NONE;
860 s->allow_early_data_cb = ctx->allow_early_data_cb;
861 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
863 if (!ssl->method->ssl_init(ssl))
866 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
871 #ifndef OPENSSL_NO_PSK
872 s->psk_client_callback = ctx->psk_client_callback;
873 s->psk_server_callback = ctx->psk_server_callback;
875 s->psk_find_session_cb = ctx->psk_find_session_cb;
876 s->psk_use_session_cb = ctx->psk_use_session_cb;
878 s->async_cb = ctx->async_cb;
879 s->async_cb_arg = ctx->async_cb_arg;
883 #ifndef OPENSSL_NO_COMP_ALG
884 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
887 #ifndef OPENSSL_NO_CT
888 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
889 ctx->ct_validation_callback_arg))
895 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
898 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
901 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
907 int SSL_is_dtls(const SSL *s)
909 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
914 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
917 int SSL_up_ref(SSL *s)
921 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
924 REF_PRINT_COUNT("SSL", s);
925 REF_ASSERT_ISNT(i < 2);
926 return ((i > 1) ? 1 : 0);
929 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
930 unsigned int sid_ctx_len)
932 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
933 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
936 ctx->sid_ctx_length = sid_ctx_len;
937 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
942 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
943 unsigned int sid_ctx_len)
945 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
950 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
951 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
954 sc->sid_ctx_length = sid_ctx_len;
955 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
960 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
962 if (!CRYPTO_THREAD_write_lock(ctx->lock))
964 ctx->generate_session_id = cb;
965 CRYPTO_THREAD_unlock(ctx->lock);
969 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
971 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
973 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
975 sc->generate_session_id = cb;
976 CRYPTO_THREAD_unlock(ssl->lock);
980 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
984 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
985 * we can "construct" a session to give us the desired check - i.e. to
986 * find if there's a session in the hash table that would conflict with
987 * any new session built out of this id/id_len and the ssl_version in use
991 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
993 if (sc == NULL || id_len > sizeof(r.session_id))
996 r.ssl_version = sc->version;
997 r.session_id_length = id_len;
998 memcpy(r.session_id, id, id_len);
1000 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1002 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1003 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1007 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1009 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1012 int SSL_set_purpose(SSL *s, int purpose)
1014 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1019 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1022 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1024 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1027 int SSL_set_trust(SSL *s, int trust)
1029 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1034 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1037 int SSL_set1_host(SSL *s, const char *hostname)
1039 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1044 /* If a hostname is provided and parses as an IP address,
1045 * treat it as such. */
1046 if (hostname != NULL
1047 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1050 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1053 int SSL_add1_host(SSL *s, const char *hostname)
1055 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1060 /* If a hostname is provided and parses as an IP address,
1061 * treat it as such. */
1064 ASN1_OCTET_STRING *ip;
1067 ip = a2i_IPADDRESS(hostname);
1069 /* We didn't want it; only to check if it *is* an IP address */
1070 ASN1_OCTET_STRING_free(ip);
1072 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1075 OPENSSL_free(old_ip);
1076 /* There can be only one IP address */
1080 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1084 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1087 void SSL_set_hostflags(SSL *s, unsigned int flags)
1089 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1094 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1097 const char *SSL_get0_peername(SSL *s)
1099 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1104 return X509_VERIFY_PARAM_get0_peername(sc->param);
1107 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1109 return dane_ctx_enable(&ctx->dane);
1112 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1114 unsigned long orig = ctx->dane.flags;
1116 ctx->dane.flags |= flags;
1120 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1122 unsigned long orig = ctx->dane.flags;
1124 ctx->dane.flags &= ~flags;
1128 int SSL_dane_enable(SSL *s, const char *basedomain)
1131 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1137 if (s->ctx->dane.mdmax == 0) {
1138 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1141 if (dane->trecs != NULL) {
1142 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1147 * Default SNI name. This rejects empty names, while set1_host below
1148 * accepts them and disables hostname checks. To avoid side-effects with
1149 * invalid input, set the SNI name first.
1151 if (sc->ext.hostname == NULL) {
1152 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1153 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1158 /* Primary RFC6125 reference identifier */
1159 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1160 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1166 dane->dctx = &s->ctx->dane;
1167 dane->trecs = sk_danetls_record_new_null();
1169 if (dane->trecs == NULL) {
1170 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1176 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1179 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1184 orig = sc->dane.flags;
1186 sc->dane.flags |= flags;
1190 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1193 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1198 orig = sc->dane.flags;
1200 sc->dane.flags &= ~flags;
1204 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1207 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1214 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1218 *mcert = dane->mcert;
1220 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1225 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1226 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1229 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1236 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1240 *usage = dane->mtlsa->usage;
1242 *selector = dane->mtlsa->selector;
1244 *mtype = dane->mtlsa->mtype;
1246 *data = dane->mtlsa->data;
1248 *dlen = dane->mtlsa->dlen;
1253 SSL_DANE *SSL_get0_dane(SSL *s)
1255 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1263 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1264 uint8_t mtype, const unsigned char *data, size_t dlen)
1266 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1271 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1274 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1277 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1280 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1282 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1285 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1287 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1292 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1295 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1300 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1302 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1310 void SSL_certs_clear(SSL *s)
1312 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1317 ssl_cert_clear_certs(sc->cert);
1320 void SSL_free(SSL *s)
1326 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1327 REF_PRINT_COUNT("SSL", s);
1330 REF_ASSERT_ISNT(i < 0);
1332 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1334 if (s->method != NULL)
1335 s->method->ssl_free(s);
1337 SSL_CTX_free(s->ctx);
1338 CRYPTO_THREAD_lock_free(s->lock);
1343 void ossl_ssl_connection_free(SSL *ssl)
1347 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1351 X509_VERIFY_PARAM_free(s->param);
1352 dane_final(&s->dane);
1354 /* Ignore return value */
1355 ssl_free_wbio_buffer(s);
1357 RECORD_LAYER_clear(&s->rlayer);
1359 BUF_MEM_free(s->init_buf);
1361 /* add extra stuff */
1362 sk_SSL_CIPHER_free(s->cipher_list);
1363 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1364 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1365 sk_SSL_CIPHER_free(s->peer_ciphers);
1367 /* Make the next call work :-) */
1368 if (s->session != NULL) {
1369 ssl_clear_bad_session(s);
1370 SSL_SESSION_free(s->session);
1372 SSL_SESSION_free(s->psksession);
1373 OPENSSL_free(s->psksession_id);
1375 ssl_cert_free(s->cert);
1376 OPENSSL_free(s->shared_sigalgs);
1377 /* Free up if allocated */
1379 OPENSSL_free(s->ext.hostname);
1380 SSL_CTX_free(s->session_ctx);
1381 OPENSSL_free(s->ext.ecpointformats);
1382 OPENSSL_free(s->ext.peer_ecpointformats);
1383 OPENSSL_free(s->ext.supportedgroups);
1384 OPENSSL_free(s->ext.peer_supportedgroups);
1385 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1386 #ifndef OPENSSL_NO_OCSP
1387 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1389 #ifndef OPENSSL_NO_CT
1390 SCT_LIST_free(s->scts);
1391 OPENSSL_free(s->ext.scts);
1393 OPENSSL_free(s->ext.ocsp.resp);
1394 OPENSSL_free(s->ext.alpn);
1395 OPENSSL_free(s->ext.tls13_cookie);
1396 if (s->clienthello != NULL)
1397 OPENSSL_free(s->clienthello->pre_proc_exts);
1398 OPENSSL_free(s->clienthello);
1399 OPENSSL_free(s->pha_context);
1400 EVP_MD_CTX_free(s->pha_dgst);
1402 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1403 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1405 OSSL_STACK_OF_X509_free(s->verified_chain);
1407 if (ssl->method != NULL)
1408 ssl->method->ssl_deinit(ssl);
1410 ASYNC_WAIT_CTX_free(s->waitctx);
1412 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1413 OPENSSL_free(s->ext.npn);
1416 #ifndef OPENSSL_NO_SRTP
1417 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1421 * We do this late. We want to ensure that any other references we held to
1422 * these BIOs are freed first *before* we call BIO_free_all(), because
1423 * BIO_free_all() will only free each BIO in the chain if the number of
1424 * references to the first BIO have dropped to 0
1426 BIO_free_all(s->wbio);
1428 BIO_free_all(s->rbio);
1432 void SSL_set0_rbio(SSL *s, BIO *rbio)
1434 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1435 #ifndef OPENSSL_NO_QUIC
1436 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1439 ossl_quic_conn_set0_net_rbio(qc, rbio);
1447 BIO_free_all(sc->rbio);
1449 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1452 void SSL_set0_wbio(SSL *s, BIO *wbio)
1454 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1455 #ifndef OPENSSL_NO_QUIC
1456 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1459 ossl_quic_conn_set0_net_wbio(qc, wbio);
1468 * If the output buffering BIO is still in place, remove it
1470 if (sc->bbio != NULL)
1471 sc->wbio = BIO_pop(sc->wbio);
1473 BIO_free_all(sc->wbio);
1476 /* Re-attach |bbio| to the new |wbio|. */
1477 if (sc->bbio != NULL)
1478 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1480 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1483 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1486 * For historical reasons, this function has many different cases in
1487 * ownership handling.
1490 /* If nothing has changed, do nothing */
1491 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1495 * If the two arguments are equal then one fewer reference is granted by the
1496 * caller than we want to take
1498 if (rbio != NULL && rbio == wbio)
1502 * If only the wbio is changed only adopt one reference.
1504 if (rbio == SSL_get_rbio(s)) {
1505 SSL_set0_wbio(s, wbio);
1509 * There is an asymmetry here for historical reasons. If only the rbio is
1510 * changed AND the rbio and wbio were originally different, then we only
1511 * adopt one reference.
1513 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1514 SSL_set0_rbio(s, rbio);
1518 /* Otherwise, adopt both references. */
1519 SSL_set0_rbio(s, rbio);
1520 SSL_set0_wbio(s, wbio);
1523 BIO *SSL_get_rbio(const SSL *s)
1525 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1526 #ifndef OPENSSL_NO_QUIC
1527 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1530 return ossl_quic_conn_get_net_rbio(qc);
1539 BIO *SSL_get_wbio(const SSL *s)
1541 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1542 #ifndef OPENSSL_NO_QUIC
1543 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1546 return ossl_quic_conn_get_net_rbio(qc);
1552 if (sc->bbio != NULL) {
1554 * If |bbio| is active, the true caller-configured BIO is its
1557 return BIO_next(sc->bbio);
1562 int SSL_get_fd(const SSL *s)
1564 return SSL_get_rfd(s);
1567 int SSL_get_rfd(const SSL *s)
1572 b = SSL_get_rbio(s);
1573 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1575 BIO_get_fd(r, &ret);
1579 int SSL_get_wfd(const SSL *s)
1584 b = SSL_get_wbio(s);
1585 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1587 BIO_get_fd(r, &ret);
1591 #ifndef OPENSSL_NO_SOCK
1592 int SSL_set_fd(SSL *s, int fd)
1597 bio = BIO_new(BIO_s_socket());
1600 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1603 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1604 SSL_set_bio(s, bio, bio);
1605 #ifndef OPENSSL_NO_KTLS
1607 * The new socket is created successfully regardless of ktls_enable.
1608 * ktls_enable doesn't change any functionality of the socket, except
1609 * changing the setsockopt to enable the processing of ktls_start.
1610 * Thus, it is not a problem to call it for non-TLS sockets.
1613 #endif /* OPENSSL_NO_KTLS */
1619 int SSL_set_wfd(SSL *s, int fd)
1621 BIO *rbio = SSL_get_rbio(s);
1623 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1624 || (int)BIO_get_fd(rbio, NULL) != fd) {
1625 BIO *bio = BIO_new(BIO_s_socket());
1628 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1631 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1632 SSL_set0_wbio(s, bio);
1633 #ifndef OPENSSL_NO_KTLS
1635 * The new socket is created successfully regardless of ktls_enable.
1636 * ktls_enable doesn't change any functionality of the socket, except
1637 * changing the setsockopt to enable the processing of ktls_start.
1638 * Thus, it is not a problem to call it for non-TLS sockets.
1641 #endif /* OPENSSL_NO_KTLS */
1644 SSL_set0_wbio(s, rbio);
1649 int SSL_set_rfd(SSL *s, int fd)
1651 BIO *wbio = SSL_get_wbio(s);
1653 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1654 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1655 BIO *bio = BIO_new(BIO_s_socket());
1658 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1661 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1662 SSL_set0_rbio(s, bio);
1665 SSL_set0_rbio(s, wbio);
1672 /* return length of latest Finished message we sent, copy to 'buf' */
1673 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1681 ret = sc->s3.tmp.finish_md_len;
1684 memcpy(buf, sc->s3.tmp.finish_md, count);
1688 /* return length of latest Finished message we expected, copy to 'buf' */
1689 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1692 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1697 ret = sc->s3.tmp.peer_finish_md_len;
1700 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1704 int SSL_get_verify_mode(const SSL *s)
1706 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1711 return sc->verify_mode;
1714 int SSL_get_verify_depth(const SSL *s)
1716 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1721 return X509_VERIFY_PARAM_get_depth(sc->param);
1724 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1725 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1730 return sc->verify_callback;
1733 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1735 return ctx->verify_mode;
1738 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1740 return X509_VERIFY_PARAM_get_depth(ctx->param);
1743 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1744 return ctx->default_verify_callback;
1747 void SSL_set_verify(SSL *s, int mode,
1748 int (*callback) (int ok, X509_STORE_CTX *ctx))
1750 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1755 sc->verify_mode = mode;
1756 if (callback != NULL)
1757 sc->verify_callback = callback;
1760 void SSL_set_verify_depth(SSL *s, int depth)
1762 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1767 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1770 void SSL_set_read_ahead(SSL *s, int yes)
1772 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1773 OSSL_PARAM options[2], *opts = options;
1778 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1780 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1781 &sc->rlayer.read_ahead);
1782 *opts = OSSL_PARAM_construct_end();
1784 /* Ignore return value */
1785 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1788 int SSL_get_read_ahead(const SSL *s)
1790 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1795 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1798 int SSL_pending(const SSL *s)
1800 size_t pending = s->method->ssl_pending(s);
1803 * SSL_pending cannot work properly if read-ahead is enabled
1804 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1805 * impossible to fix since SSL_pending cannot report errors that may be
1806 * observed while scanning the new data. (Note that SSL_pending() is
1807 * often used as a boolean value, so we'd better not return -1.)
1809 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1810 * we just return INT_MAX.
1812 return pending < INT_MAX ? (int)pending : INT_MAX;
1815 int SSL_has_pending(const SSL *s)
1818 * Similar to SSL_pending() but returns a 1 to indicate that we have
1819 * processed or unprocessed data available or 0 otherwise (as opposed to the
1820 * number of bytes available). Unlike SSL_pending() this will take into
1821 * account read_ahead data. A 1 return simply indicates that we have data.
1822 * That data may not result in any application data, or we may fail to parse
1823 * the records for some reason.
1825 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1827 /* Check buffered app data if any first */
1828 if (SSL_CONNECTION_IS_DTLS(sc)) {
1832 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1833 while ((item = pqueue_next(&iter)) != NULL) {
1835 if (rdata->length > 0)
1840 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1843 return RECORD_LAYER_read_pending(&sc->rlayer);
1846 X509 *SSL_get1_peer_certificate(const SSL *s)
1848 X509 *r = SSL_get0_peer_certificate(s);
1856 X509 *SSL_get0_peer_certificate(const SSL *s)
1858 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1863 if (sc->session == NULL)
1866 return sc->session->peer;
1869 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1872 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1877 if (sc->session == NULL)
1880 r = sc->session->peer_chain;
1883 * If we are a client, cert_chain includes the peer's own certificate; if
1884 * we are a server, it does not.
1891 * Now in theory, since the calling process own 't' it should be safe to
1892 * modify. We need to be able to read f without being hassled
1894 int SSL_copy_session_id(SSL *t, const SSL *f)
1897 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1898 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1899 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1901 if (tsc == NULL || fsc == NULL)
1904 /* Do we need to do SSL locking? */
1905 if (!SSL_set_session(t, SSL_get_session(f))) {
1910 * what if we are setup for one protocol version but want to talk another
1912 if (t->method != f->method) {
1913 t->method->ssl_deinit(t);
1914 t->method = f->method;
1915 if (t->method->ssl_init(t) == 0)
1919 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1920 ssl_cert_free(tsc->cert);
1921 tsc->cert = fsc->cert;
1922 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1929 /* Fix this so it checks all the valid key/cert options */
1930 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1932 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1933 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1936 if (ctx->cert->key->privatekey == NULL) {
1937 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1940 return X509_check_private_key
1941 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1944 /* Fix this function so that it takes an optional type parameter */
1945 int SSL_check_private_key(const SSL *ssl)
1947 const SSL_CONNECTION *sc;
1949 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1950 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1953 if (sc->cert->key->x509 == NULL) {
1954 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1957 if (sc->cert->key->privatekey == NULL) {
1958 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1961 return X509_check_private_key(sc->cert->key->x509,
1962 sc->cert->key->privatekey);
1965 int SSL_waiting_for_async(SSL *s)
1967 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1978 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1980 ASYNC_WAIT_CTX *ctx;
1981 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1986 if ((ctx = sc->waitctx) == NULL)
1988 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1991 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1992 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1994 ASYNC_WAIT_CTX *ctx;
1995 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2000 if ((ctx = sc->waitctx) == NULL)
2002 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2006 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2008 ctx->async_cb = callback;
2012 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
2014 ctx->async_cb_arg = arg;
2018 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2020 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2025 sc->async_cb = callback;
2029 int SSL_set_async_callback_arg(SSL *s, void *arg)
2031 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2036 sc->async_cb_arg = arg;
2040 int SSL_get_async_status(SSL *s, int *status)
2042 ASYNC_WAIT_CTX *ctx;
2043 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2048 if ((ctx = sc->waitctx) == NULL)
2050 *status = ASYNC_WAIT_CTX_get_status(ctx);
2054 int SSL_accept(SSL *s)
2056 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2057 #ifndef OPENSSL_NO_QUIC
2058 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2061 return s->method->ssl_accept(s);
2067 if (sc->handshake_func == NULL) {
2068 /* Not properly initialized yet */
2069 SSL_set_accept_state(s);
2072 return SSL_do_handshake(s);
2075 int SSL_connect(SSL *s)
2077 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2078 #ifndef OPENSSL_NO_QUIC
2079 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2082 return s->method->ssl_connect(s);
2088 if (sc->handshake_func == NULL) {
2089 /* Not properly initialized yet */
2090 SSL_set_connect_state(s);
2093 return SSL_do_handshake(s);
2096 long SSL_get_default_timeout(const SSL *s)
2098 return (long int)ossl_time2seconds(s->method->get_timeout());
2101 static int ssl_async_wait_ctx_cb(void *arg)
2103 SSL *s = (SSL *)arg;
2104 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2109 return sc->async_cb(s, sc->async_cb_arg);
2112 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2113 int (*func) (void *))
2116 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2121 if (sc->waitctx == NULL) {
2122 sc->waitctx = ASYNC_WAIT_CTX_new();
2123 if (sc->waitctx == NULL)
2125 if (sc->async_cb != NULL
2126 && !ASYNC_WAIT_CTX_set_callback
2127 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2131 sc->rwstate = SSL_NOTHING;
2132 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2133 sizeof(struct ssl_async_args))) {
2135 sc->rwstate = SSL_NOTHING;
2136 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2139 sc->rwstate = SSL_ASYNC_PAUSED;
2142 sc->rwstate = SSL_ASYNC_NO_JOBS;
2148 sc->rwstate = SSL_NOTHING;
2149 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2150 /* Shouldn't happen */
2155 static int ssl_io_intern(void *vargs)
2157 struct ssl_async_args *args;
2163 args = (struct ssl_async_args *)vargs;
2167 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2170 switch (args->type) {
2172 return args->f.func_read(s, buf, num, &sc->asyncrw);
2174 return args->f.func_write(s, buf, num, &sc->asyncrw);
2176 return args->f.func_other(s);
2181 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2183 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2184 #ifndef OPENSSL_NO_QUIC
2185 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2188 return s->method->ssl_read(s, buf, num, readbytes);
2194 if (sc->handshake_func == NULL) {
2195 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2199 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2200 sc->rwstate = SSL_NOTHING;
2204 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2205 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2206 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2210 * If we are a client and haven't received the ServerHello etc then we
2213 ossl_statem_check_finish_init(sc, 0);
2215 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2216 struct ssl_async_args args;
2222 args.type = READFUNC;
2223 args.f.func_read = s->method->ssl_read;
2225 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2226 *readbytes = sc->asyncrw;
2229 return s->method->ssl_read(s, buf, num, readbytes);
2233 int SSL_read(SSL *s, void *buf, int num)
2239 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2243 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2246 * The cast is safe here because ret should be <= INT_MAX because num is
2250 ret = (int)readbytes;
2255 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2257 int ret = ssl_read_internal(s, buf, num, readbytes);
2264 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2267 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2269 /* TODO(QUIC): This will need special handling for QUIC */
2274 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2275 return SSL_READ_EARLY_DATA_ERROR;
2278 switch (sc->early_data_state) {
2279 case SSL_EARLY_DATA_NONE:
2280 if (!SSL_in_before(s)) {
2281 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2282 return SSL_READ_EARLY_DATA_ERROR;
2286 case SSL_EARLY_DATA_ACCEPT_RETRY:
2287 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2288 ret = SSL_accept(s);
2291 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2292 return SSL_READ_EARLY_DATA_ERROR;
2296 case SSL_EARLY_DATA_READ_RETRY:
2297 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2298 sc->early_data_state = SSL_EARLY_DATA_READING;
2299 ret = SSL_read_ex(s, buf, num, readbytes);
2301 * State machine will update early_data_state to
2302 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2305 if (ret > 0 || (ret <= 0 && sc->early_data_state
2306 != SSL_EARLY_DATA_FINISHED_READING)) {
2307 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2308 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2309 : SSL_READ_EARLY_DATA_ERROR;
2312 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2315 return SSL_READ_EARLY_DATA_FINISH;
2318 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2319 return SSL_READ_EARLY_DATA_ERROR;
2323 int SSL_get_early_data_status(const SSL *s)
2325 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2327 /* TODO(QUIC): This will need special handling for QUIC */
2331 return sc->ext.early_data;
2334 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2336 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2337 #ifndef OPENSSL_NO_QUIC
2338 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2341 return s->method->ssl_peek(s, buf, num, readbytes);
2347 if (sc->handshake_func == NULL) {
2348 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2352 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2355 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2356 struct ssl_async_args args;
2362 args.type = READFUNC;
2363 args.f.func_read = s->method->ssl_peek;
2365 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2366 *readbytes = sc->asyncrw;
2369 return s->method->ssl_peek(s, buf, num, readbytes);
2373 int SSL_peek(SSL *s, void *buf, int num)
2379 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2383 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2386 * The cast is safe here because ret should be <= INT_MAX because num is
2390 ret = (int)readbytes;
2396 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2398 int ret = ssl_peek_internal(s, buf, num, readbytes);
2405 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2407 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2408 #ifndef OPENSSL_NO_QUIC
2409 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2412 return s->method->ssl_write(s, buf, num, written);
2418 if (sc->handshake_func == NULL) {
2419 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2423 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2424 sc->rwstate = SSL_NOTHING;
2425 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2429 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2430 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2431 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2432 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2435 /* If we are a client and haven't sent the Finished we better do that */
2436 ossl_statem_check_finish_init(sc, 1);
2438 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2440 struct ssl_async_args args;
2443 args.buf = (void *)buf;
2445 args.type = WRITEFUNC;
2446 args.f.func_write = s->method->ssl_write;
2448 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2449 *written = sc->asyncrw;
2452 return s->method->ssl_write(s, buf, num, written);
2456 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2459 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2464 if (sc->handshake_func == NULL) {
2465 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2469 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2470 sc->rwstate = SSL_NOTHING;
2471 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2475 if (!BIO_get_ktls_send(sc->wbio)) {
2476 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2480 /* If we have an alert to send, lets send it */
2481 if (sc->s3.alert_dispatch > 0) {
2482 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2484 /* SSLfatal() already called if appropriate */
2487 /* if it went, fall through and send more stuff */
2490 sc->rwstate = SSL_WRITING;
2491 if (BIO_flush(sc->wbio) <= 0) {
2492 if (!BIO_should_retry(sc->wbio)) {
2493 sc->rwstate = SSL_NOTHING;
2496 set_sys_error(EAGAIN);
2502 #ifdef OPENSSL_NO_KTLS
2503 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2504 "can't call ktls_sendfile(), ktls disabled");
2507 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2509 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2510 if ((get_last_sys_error() == EAGAIN) ||
2511 (get_last_sys_error() == EINTR) ||
2512 (get_last_sys_error() == EBUSY))
2513 BIO_set_retry_write(sc->wbio);
2516 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2519 sc->rwstate = SSL_NOTHING;
2524 int SSL_write(SSL *s, const void *buf, int num)
2530 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2534 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2537 * The cast is safe here because ret should be <= INT_MAX because num is
2546 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2548 int ret = ssl_write_internal(s, buf, num, written);
2555 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2557 int ret, early_data_state;
2559 uint32_t partialwrite;
2560 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2562 /* TODO(QUIC): This will need special handling for QUIC */
2566 switch (sc->early_data_state) {
2567 case SSL_EARLY_DATA_NONE:
2569 || !SSL_in_before(s)
2570 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2571 && (sc->psk_use_session_cb == NULL))) {
2572 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2577 case SSL_EARLY_DATA_CONNECT_RETRY:
2578 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2579 ret = SSL_connect(s);
2582 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2587 case SSL_EARLY_DATA_WRITE_RETRY:
2588 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2590 * We disable partial write for early data because we don't keep track
2591 * of how many bytes we've written between the SSL_write_ex() call and
2592 * the flush if the flush needs to be retried)
2594 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2595 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2596 ret = SSL_write_ex(s, buf, num, &writtmp);
2597 sc->mode |= partialwrite;
2599 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2602 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2605 case SSL_EARLY_DATA_WRITE_FLUSH:
2606 /* The buffering BIO is still in place so we need to flush it */
2607 if (statem_flush(sc) != 1)
2610 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2613 case SSL_EARLY_DATA_FINISHED_READING:
2614 case SSL_EARLY_DATA_READ_RETRY:
2615 early_data_state = sc->early_data_state;
2616 /* We are a server writing to an unauthenticated client */
2617 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2618 ret = SSL_write_ex(s, buf, num, written);
2619 /* The buffering BIO is still in place */
2621 (void)BIO_flush(sc->wbio);
2622 sc->early_data_state = early_data_state;
2626 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2631 int SSL_shutdown(SSL *s)
2634 * Note that this function behaves differently from what one might
2635 * expect. Return values are 0 for no success (yet), 1 for success; but
2636 * calling it once is usually not enough, even if blocking I/O is used
2637 * (see ssl3_shutdown).
2639 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2644 if (sc->handshake_func == NULL) {
2645 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2649 if (!SSL_in_init(s)) {
2650 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2651 struct ssl_async_args args;
2653 memset(&args, 0, sizeof(args));
2655 args.type = OTHERFUNC;
2656 args.f.func_other = s->method->ssl_shutdown;
2658 return ssl_start_async_job(s, &args, ssl_io_intern);
2660 return s->method->ssl_shutdown(s);
2663 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2668 int SSL_key_update(SSL *s, int updatetype)
2670 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2675 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2676 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2680 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2681 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2682 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2686 if (!SSL_is_init_finished(s)) {
2687 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2691 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2692 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2696 ossl_statem_set_in_init(sc, 1);
2697 sc->key_update = updatetype;
2701 int SSL_get_key_update_type(const SSL *s)
2703 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2708 return sc->key_update;
2712 * Can we accept a renegotiation request? If yes, set the flag and
2713 * return 1 if yes. If not, raise error and return 0.
2715 static int can_renegotiate(const SSL_CONNECTION *sc)
2717 if (SSL_CONNECTION_IS_TLS13(sc)) {
2718 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2722 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2723 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2730 int SSL_renegotiate(SSL *s)
2732 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2737 if (!can_renegotiate(sc))
2740 sc->renegotiate = 1;
2741 sc->new_session = 1;
2742 return s->method->ssl_renegotiate(s);
2745 int SSL_renegotiate_abbreviated(SSL *s)
2747 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2752 if (!can_renegotiate(sc))
2755 sc->renegotiate = 1;
2756 sc->new_session = 0;
2757 return s->method->ssl_renegotiate(s);
2760 int SSL_renegotiate_pending(const SSL *s)
2762 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2768 * becomes true when negotiation is requested; false again once a
2769 * handshake has finished
2771 return (sc->renegotiate != 0);
2774 int SSL_new_session_ticket(SSL *s)
2776 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2781 /* If we are in init because we're sending tickets, okay to send more. */
2782 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2783 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2784 || !SSL_CONNECTION_IS_TLS13(sc))
2786 sc->ext.extra_tickets_expected++;
2787 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2788 ossl_statem_set_in_init(sc, 1);
2792 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2795 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2797 /* TODO(QUIC): Special handling for some ctrls will be needed */
2802 case SSL_CTRL_GET_READ_AHEAD:
2803 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2804 case SSL_CTRL_SET_READ_AHEAD:
2805 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2806 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2809 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2810 sc->msg_callback_arg = parg;
2815 OSSL_PARAM options[2], *opts = options;
2819 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2821 *opts = OSSL_PARAM_construct_end();
2823 /* Ignore return value */
2824 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2828 case SSL_CTRL_CLEAR_MODE:
2829 return (sc->mode &= ~larg);
2830 case SSL_CTRL_GET_MAX_CERT_LIST:
2831 return (long)sc->max_cert_list;
2832 case SSL_CTRL_SET_MAX_CERT_LIST:
2835 l = (long)sc->max_cert_list;
2836 sc->max_cert_list = (size_t)larg;
2838 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2839 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2841 #ifndef OPENSSL_NO_KTLS
2842 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2844 #endif /* OPENSSL_NO_KTLS */
2845 sc->max_send_fragment = larg;
2846 if (sc->max_send_fragment < sc->split_send_fragment)
2847 sc->split_send_fragment = sc->max_send_fragment;
2848 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2850 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2851 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2853 sc->split_send_fragment = larg;
2855 case SSL_CTRL_SET_MAX_PIPELINES:
2856 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2858 sc->max_pipelines = larg;
2859 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2860 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2862 case SSL_CTRL_GET_RI_SUPPORT:
2863 return sc->s3.send_connection_binding;
2864 case SSL_CTRL_SET_RETRY_VERIFY:
2865 sc->rwstate = SSL_RETRY_VERIFY;
2867 case SSL_CTRL_CERT_FLAGS:
2868 return (sc->cert->cert_flags |= larg);
2869 case SSL_CTRL_CLEAR_CERT_FLAGS:
2870 return (sc->cert->cert_flags &= ~larg);
2872 case SSL_CTRL_GET_RAW_CIPHERLIST:
2874 if (sc->s3.tmp.ciphers_raw == NULL)
2876 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2877 return (int)sc->s3.tmp.ciphers_rawlen;
2879 return TLS_CIPHER_LEN;
2881 case SSL_CTRL_GET_EXTMS_SUPPORT:
2882 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2884 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2888 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2889 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2890 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2891 &sc->min_proto_version);
2892 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2893 return sc->min_proto_version;
2894 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2895 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2896 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2897 &sc->max_proto_version);
2898 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2899 return sc->max_proto_version;
2901 return s->method->ssl_ctrl(s, cmd, larg, parg);
2905 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2907 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2913 case SSL_CTRL_SET_MSG_CALLBACK:
2914 sc->msg_callback = (void (*)
2915 (int write_p, int version, int content_type,
2916 const void *buf, size_t len, SSL *ssl,
2921 return s->method->ssl_callback_ctrl(s, cmd, fp);
2925 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2927 return ctx->sessions;
2930 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2934 if (ssl_tsan_lock(ctx)) {
2935 res = tsan_load(stat);
2936 ssl_tsan_unlock(ctx);
2941 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2944 /* For some cases with ctx == NULL perform syntax checks */
2947 case SSL_CTRL_SET_GROUPS_LIST:
2948 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2949 case SSL_CTRL_SET_SIGALGS_LIST:
2950 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2951 return tls1_set_sigalgs_list(NULL, parg, 0);
2958 case SSL_CTRL_GET_READ_AHEAD:
2959 return ctx->read_ahead;
2960 case SSL_CTRL_SET_READ_AHEAD:
2961 l = ctx->read_ahead;
2962 ctx->read_ahead = larg;
2965 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2966 ctx->msg_callback_arg = parg;
2969 case SSL_CTRL_GET_MAX_CERT_LIST:
2970 return (long)ctx->max_cert_list;
2971 case SSL_CTRL_SET_MAX_CERT_LIST:
2974 l = (long)ctx->max_cert_list;
2975 ctx->max_cert_list = (size_t)larg;
2978 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2981 l = (long)ctx->session_cache_size;
2982 ctx->session_cache_size = (size_t)larg;
2984 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2985 return (long)ctx->session_cache_size;
2986 case SSL_CTRL_SET_SESS_CACHE_MODE:
2987 l = ctx->session_cache_mode;
2988 ctx->session_cache_mode = larg;
2990 case SSL_CTRL_GET_SESS_CACHE_MODE:
2991 return ctx->session_cache_mode;
2993 case SSL_CTRL_SESS_NUMBER:
2994 return lh_SSL_SESSION_num_items(ctx->sessions);
2995 case SSL_CTRL_SESS_CONNECT:
2996 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2997 case SSL_CTRL_SESS_CONNECT_GOOD:
2998 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2999 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3000 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3001 case SSL_CTRL_SESS_ACCEPT:
3002 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3003 case SSL_CTRL_SESS_ACCEPT_GOOD:
3004 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3005 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3006 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3007 case SSL_CTRL_SESS_HIT:
3008 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3009 case SSL_CTRL_SESS_CB_HIT:
3010 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3011 case SSL_CTRL_SESS_MISSES:
3012 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3013 case SSL_CTRL_SESS_TIMEOUTS:
3014 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3015 case SSL_CTRL_SESS_CACHE_FULL:
3016 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3018 return (ctx->mode |= larg);
3019 case SSL_CTRL_CLEAR_MODE:
3020 return (ctx->mode &= ~larg);
3021 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3022 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
3024 ctx->max_send_fragment = larg;
3025 if (ctx->max_send_fragment < ctx->split_send_fragment)
3026 ctx->split_send_fragment = ctx->max_send_fragment;
3028 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3029 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
3031 ctx->split_send_fragment = larg;
3033 case SSL_CTRL_SET_MAX_PIPELINES:
3034 if (larg < 1 || larg > SSL_MAX_PIPELINES)
3036 ctx->max_pipelines = larg;
3038 case SSL_CTRL_CERT_FLAGS:
3039 return (ctx->cert->cert_flags |= larg);
3040 case SSL_CTRL_CLEAR_CERT_FLAGS:
3041 return (ctx->cert->cert_flags &= ~larg);
3042 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3043 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3044 && ssl_set_version_bound(ctx->method->version, (int)larg,
3045 &ctx->min_proto_version);
3046 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3047 return ctx->min_proto_version;
3048 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3049 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3050 && ssl_set_version_bound(ctx->method->version, (int)larg,
3051 &ctx->max_proto_version);
3052 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3053 return ctx->max_proto_version;
3055 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3059 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3062 case SSL_CTRL_SET_MSG_CALLBACK:
3063 ctx->msg_callback = (void (*)
3064 (int write_p, int version, int content_type,
3065 const void *buf, size_t len, SSL *ssl,
3070 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3074 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3083 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3084 const SSL_CIPHER *const *bp)
3086 if ((*ap)->id > (*bp)->id)
3088 if ((*ap)->id < (*bp)->id)
3094 * return a STACK of the ciphers available for the SSL and in order of
3097 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3099 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3102 if (sc->cipher_list != NULL) {
3103 return sc->cipher_list;
3104 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3105 return s->ctx->cipher_list;
3111 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3113 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3115 if (sc == NULL || !sc->server)
3117 return sc->peer_ciphers;
3120 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3122 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3124 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3129 ciphers = SSL_get_ciphers(s);
3132 if (!ssl_set_client_disabled(sc))
3134 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3135 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3136 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3138 sk = sk_SSL_CIPHER_new_null();
3141 if (!sk_SSL_CIPHER_push(sk, c)) {
3142 sk_SSL_CIPHER_free(sk);
3150 /** return a STACK of the ciphers available for the SSL and in order of
3152 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3155 if (s->cipher_list_by_id != NULL)
3156 return s->cipher_list_by_id;
3157 else if (s->ssl.ctx != NULL
3158 && s->ssl.ctx->cipher_list_by_id != NULL)
3159 return s->ssl.ctx->cipher_list_by_id;
3164 /** The old interface to get the same thing as SSL_get_ciphers() */
3165 const char *SSL_get_cipher_list(const SSL *s, int n)
3167 const SSL_CIPHER *c;
3168 STACK_OF(SSL_CIPHER) *sk;
3172 sk = SSL_get_ciphers(s);
3173 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3175 c = sk_SSL_CIPHER_value(sk, n);
3181 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3183 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3186 return ctx->cipher_list;
3191 * Distinguish between ciphers controlled by set_ciphersuite() and
3192 * set_cipher_list() when counting.
3194 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3197 const SSL_CIPHER *c;
3201 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3202 c = sk_SSL_CIPHER_value(sk, i);
3203 if (c->min_tls >= TLS1_3_VERSION)
3210 /** specify the ciphers to be used by default by the SSL_CTX */
3211 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3213 STACK_OF(SSL_CIPHER) *sk;
3215 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3216 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3219 * ssl_create_cipher_list may return an empty stack if it was unable to
3220 * find a cipher matching the given rule string (for example if the rule
3221 * string specifies a cipher which has been disabled). This is not an
3222 * error as far as ssl_create_cipher_list is concerned, and hence
3223 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3227 else if (cipher_list_tls12_num(sk) == 0) {
3228 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3234 /** specify the ciphers to be used by the SSL */
3235 int SSL_set_cipher_list(SSL *s, const char *str)
3237 STACK_OF(SSL_CIPHER) *sk;
3238 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3243 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3244 &sc->cipher_list, &sc->cipher_list_by_id, str,
3246 /* see comment in SSL_CTX_set_cipher_list */
3249 else if (cipher_list_tls12_num(sk) == 0) {
3250 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3256 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3259 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3260 const SSL_CIPHER *c;
3262 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3268 || sc->peer_ciphers == NULL
3273 clntsk = sc->peer_ciphers;
3274 srvrsk = SSL_get_ciphers(s);
3275 if (clntsk == NULL || srvrsk == NULL)
3278 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3281 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3284 c = sk_SSL_CIPHER_value(clntsk, i);
3285 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3288 n = strlen(c->name);
3305 * Return the requested servername (SNI) value. Note that the behaviour varies
3307 * - whether this is called by the client or the server,
3308 * - if we are before or during/after the handshake,
3309 * - if a resumption or normal handshake is being attempted/has occurred
3310 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3312 * Note that only the host_name type is defined (RFC 3546).
3314 const char *SSL_get_servername(const SSL *s, const int type)
3316 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3323 * If we don't know if we are the client or the server yet then we assume
3326 server = sc->handshake_func == NULL ? 0 : sc->server;
3328 if (type != TLSEXT_NAMETYPE_host_name)
3334 * In TLSv1.3 on the server SNI is not associated with the session
3335 * but in TLSv1.2 or below it is.
3337 * Before the handshake:
3340 * During/after the handshake (TLSv1.2 or below resumption occurred):
3341 * - If a servername was accepted by the server in the original
3342 * handshake then it will return that servername, or NULL otherwise.
3344 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3345 * - The function will return the servername requested by the client in
3346 * this handshake or NULL if none was requested.
3348 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3349 return sc->session->ext.hostname;
3354 * Before the handshake:
3355 * - If a servername has been set via a call to
3356 * SSL_set_tlsext_host_name() then it will return that servername
3357 * - If one has not been set, but a TLSv1.2 resumption is being
3358 * attempted and the session from the original handshake had a
3359 * servername accepted by the server then it will return that
3361 * - Otherwise it returns NULL
3363 * During/after the handshake (TLSv1.2 or below resumption occurred):
3364 * - If the session from the original handshake had a servername accepted
3365 * by the server then it will return that servername.
3366 * - Otherwise it returns the servername set via
3367 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3369 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3370 * - It will return the servername set via SSL_set_tlsext_host_name()
3371 * (or NULL if it was not called).
3373 if (SSL_in_before(s)) {
3374 if (sc->ext.hostname == NULL
3375 && sc->session != NULL
3376 && sc->session->ssl_version != TLS1_3_VERSION)
3377 return sc->session->ext.hostname;
3379 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3380 && sc->session->ext.hostname != NULL)
3381 return sc->session->ext.hostname;
3385 return sc->ext.hostname;
3388 int SSL_get_servername_type(const SSL *s)
3390 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3391 return TLSEXT_NAMETYPE_host_name;
3396 * SSL_select_next_proto implements the standard protocol selection. It is
3397 * expected that this function is called from the callback set by
3398 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3399 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3400 * not included in the length. A byte string of length 0 is invalid. No byte
3401 * string may be truncated. The current, but experimental algorithm for
3402 * selecting the protocol is: 1) If the server doesn't support NPN then this
3403 * is indicated to the callback. In this case, the client application has to
3404 * abort the connection or have a default application level protocol. 2) If
3405 * the server supports NPN, but advertises an empty list then the client
3406 * selects the first protocol in its list, but indicates via the API that this
3407 * fallback case was enacted. 3) Otherwise, the client finds the first
3408 * protocol in the server's list that it supports and selects this protocol.
3409 * This is because it's assumed that the server has better information about
3410 * which protocol a client should use. 4) If the client doesn't support any
3411 * of the server's advertised protocols, then this is treated the same as
3412 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3413 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3415 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3416 const unsigned char *server,
3417 unsigned int server_len,
3418 const unsigned char *client, unsigned int client_len)
3421 const unsigned char *result;
3422 int status = OPENSSL_NPN_UNSUPPORTED;
3425 * For each protocol in server preference order, see if we support it.
3427 for (i = 0; i < server_len;) {
3428 for (j = 0; j < client_len;) {
3429 if (server[i] == client[j] &&
3430 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3431 /* We found a match */
3432 result = &server[i];
3433 status = OPENSSL_NPN_NEGOTIATED;
3443 /* There's no overlap between our protocols and the server's list. */
3445 status = OPENSSL_NPN_NO_OVERLAP;
3448 *out = (unsigned char *)result + 1;
3449 *outlen = result[0];
3453 #ifndef OPENSSL_NO_NEXTPROTONEG
3455 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3456 * client's requested protocol for this connection and returns 0. If the
3457 * client didn't request any protocol, then *data is set to NULL. Note that
3458 * the client can request any protocol it chooses. The value returned from
3459 * this function need not be a member of the list of supported protocols
3460 * provided by the callback.
3462 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3465 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3468 /* We have no other way to indicate error */
3474 *data = sc->ext.npn;
3475 if (*data == NULL) {
3478 *len = (unsigned int)sc->ext.npn_len;
3483 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3484 * a TLS server needs a list of supported protocols for Next Protocol
3485 * Negotiation. The returned list must be in wire format. The list is
3486 * returned by setting |out| to point to it and |outlen| to its length. This
3487 * memory will not be modified, but one should assume that the SSL* keeps a
3488 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3489 * wishes to advertise. Otherwise, no such extension will be included in the
3492 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3493 SSL_CTX_npn_advertised_cb_func cb,
3496 ctx->ext.npn_advertised_cb = cb;
3497 ctx->ext.npn_advertised_cb_arg = arg;
3501 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3502 * client needs to select a protocol from the server's provided list. |out|
3503 * must be set to point to the selected protocol (which may be within |in|).
3504 * The length of the protocol name must be written into |outlen|. The
3505 * server's advertised protocols are provided in |in| and |inlen|. The
3506 * callback can assume that |in| is syntactically valid. The client must
3507 * select a protocol. It is fatal to the connection if this callback returns
3508 * a value other than SSL_TLSEXT_ERR_OK.
3510 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3511 SSL_CTX_npn_select_cb_func cb,
3514 ctx->ext.npn_select_cb = cb;
3515 ctx->ext.npn_select_cb_arg = arg;
3519 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3523 if (protos_len < 2 || protos == NULL)
3526 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3527 if (protos[idx] == 0)
3530 return idx == protos_len;
3533 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3534 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3535 * length-prefixed strings). Returns 0 on success.
3537 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3538 unsigned int protos_len)
3540 unsigned char *alpn;
3542 if (protos_len == 0 || protos == NULL) {
3543 OPENSSL_free(ctx->ext.alpn);
3544 ctx->ext.alpn = NULL;
3545 ctx->ext.alpn_len = 0;
3548 /* Not valid per RFC */
3549 if (!alpn_value_ok(protos, protos_len))
3552 alpn = OPENSSL_memdup(protos, protos_len);
3555 OPENSSL_free(ctx->ext.alpn);
3556 ctx->ext.alpn = alpn;
3557 ctx->ext.alpn_len = protos_len;
3563 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3564 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3565 * length-prefixed strings). Returns 0 on success.
3567 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3568 unsigned int protos_len)
3570 unsigned char *alpn;
3571 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3576 if (protos_len == 0 || protos == NULL) {
3577 OPENSSL_free(sc->ext.alpn);
3578 sc->ext.alpn = NULL;
3579 sc->ext.alpn_len = 0;
3582 /* Not valid per RFC */
3583 if (!alpn_value_ok(protos, protos_len))
3586 alpn = OPENSSL_memdup(protos, protos_len);
3589 OPENSSL_free(sc->ext.alpn);
3590 sc->ext.alpn = alpn;
3591 sc->ext.alpn_len = protos_len;
3597 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3598 * called during ClientHello processing in order to select an ALPN protocol
3599 * from the client's list of offered protocols.
3601 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3602 SSL_CTX_alpn_select_cb_func cb,
3605 ctx->ext.alpn_select_cb = cb;
3606 ctx->ext.alpn_select_cb_arg = arg;
3610 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3611 * On return it sets |*data| to point to |*len| bytes of protocol name
3612 * (not including the leading length-prefix byte). If the server didn't
3613 * respond with a negotiated protocol then |*len| will be zero.
3615 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3618 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3621 /* We have no other way to indicate error */
3627 *data = sc->s3.alpn_selected;
3631 *len = (unsigned int)sc->s3.alpn_selected_len;
3634 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3635 const char *label, size_t llen,
3636 const unsigned char *context, size_t contextlen,
3639 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3644 if (sc->session == NULL
3645 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3648 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3650 contextlen, use_context);
3653 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3654 const char *label, size_t llen,
3655 const unsigned char *context,
3658 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3663 if (sc->version != TLS1_3_VERSION)
3666 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3667 context, contextlen);
3670 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3672 const unsigned char *session_id = a->session_id;
3674 unsigned char tmp_storage[4];
3676 if (a->session_id_length < sizeof(tmp_storage)) {
3677 memset(tmp_storage, 0, sizeof(tmp_storage));
3678 memcpy(tmp_storage, a->session_id, a->session_id_length);
3679 session_id = tmp_storage;
3683 ((unsigned long)session_id[0]) |
3684 ((unsigned long)session_id[1] << 8L) |
3685 ((unsigned long)session_id[2] << 16L) |
3686 ((unsigned long)session_id[3] << 24L);
3691 * NB: If this function (or indeed the hash function which uses a sort of
3692 * coarser function than this one) is changed, ensure
3693 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3694 * being able to construct an SSL_SESSION that will collide with any existing
3695 * session with a matching session ID.
3697 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3699 if (a->ssl_version != b->ssl_version)
3701 if (a->session_id_length != b->session_id_length)
3703 return memcmp(a->session_id, b->session_id, a->session_id_length);
3707 * These wrapper functions should remain rather than redeclaring
3708 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3709 * variable. The reason is that the functions aren't static, they're exposed
3713 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3714 const SSL_METHOD *meth)
3716 SSL_CTX *ret = NULL;
3717 #ifndef OPENSSL_NO_COMP_ALG
3722 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3726 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3729 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3730 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3733 ret = OPENSSL_zalloc(sizeof(*ret));
3737 /* Init the reference counting before any call to SSL_CTX_free */
3738 ret->references = 1;
3739 ret->lock = CRYPTO_THREAD_lock_new();
3740 if (ret->lock == NULL) {
3741 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3745 #ifdef TSAN_REQUIRES_LOCKING
3746 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3747 if (ret->tsan_lock == NULL) {
3748 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3753 ret->libctx = libctx;
3754 if (propq != NULL) {
3755 ret->propq = OPENSSL_strdup(propq);
3756 if (ret->propq == NULL)
3761 ret->min_proto_version = 0;
3762 ret->max_proto_version = 0;
3763 ret->mode = SSL_MODE_AUTO_RETRY;
3764 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3765 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3766 /* We take the system default. */
3767 ret->session_timeout = meth->get_timeout();
3768 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3769 ret->verify_mode = SSL_VERIFY_NONE;
3770 if ((ret->cert = ssl_cert_new()) == NULL) {
3771 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3775 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3776 if (ret->sessions == NULL) {
3777 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3780 ret->cert_store = X509_STORE_new();
3781 if (ret->cert_store == NULL) {
3782 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3785 #ifndef OPENSSL_NO_CT
3786 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3787 if (ret->ctlog_store == NULL) {
3788 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3793 /* initialize cipher/digest methods table */
3794 if (!ssl_load_ciphers(ret))
3796 /* initialise sig algs */
3797 if (!ssl_setup_sig_algs(ret))
3800 if (!ssl_load_groups(ret))
3803 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3804 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3808 if (!ssl_create_cipher_list(ret,
3809 ret->tls13_ciphersuites,
3810 &ret->cipher_list, &ret->cipher_list_by_id,
3811 OSSL_default_cipher_list(), ret->cert)
3812 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3813 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3817 ret->param = X509_VERIFY_PARAM_new();
3818 if (ret->param == NULL) {
3819 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3824 * If these aren't available from the provider we'll get NULL returns.
3825 * That's fine but will cause errors later if SSLv3 is negotiated
3827 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3828 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3830 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3831 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3835 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3836 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3840 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3841 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3845 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3848 /* No compression for DTLS */
3849 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3850 ret->comp_methods = SSL_COMP_get_compression_methods();
3852 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3853 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3855 /* Setup RFC5077 ticket keys */
3856 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3857 sizeof(ret->ext.tick_key_name), 0) <= 0)
3858 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3859 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3860 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3861 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3862 ret->options |= SSL_OP_NO_TICKET;
3864 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3865 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3866 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3870 #ifndef OPENSSL_NO_SRP
3871 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3872 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3876 #ifndef OPENSSL_NO_ENGINE
3877 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3878 # define eng_strx(x) #x
3879 # define eng_str(x) eng_strx(x)
3880 /* Use specific client engine automatically... ignore errors */
3883 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3886 ENGINE_load_builtin_engines();
3887 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3889 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3895 #ifndef OPENSSL_NO_COMP_ALG
3897 * Set the default order: brotli, zlib, zstd
3898 * Including only those enabled algorithms
3900 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3902 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3903 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3904 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3905 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3906 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3907 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3910 * Disable compression by default to prevent CRIME. Applications can
3911 * re-enable compression by configuring
3912 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3913 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3914 * middlebox compatibility by default. This may be disabled by default in
3915 * a later OpenSSL version.
3917 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3919 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3922 * We cannot usefully set a default max_early_data here (which gets
3923 * propagated in SSL_new(), for the following reason: setting the
3924 * SSL field causes tls_construct_stoc_early_data() to tell the
3925 * client that early data will be accepted when constructing a TLS 1.3
3926 * session ticket, and the client will accordingly send us early data
3927 * when using that ticket (if the client has early data to send).
3928 * However, in order for the early data to actually be consumed by
3929 * the application, the application must also have calls to
3930 * SSL_read_early_data(); otherwise we'll just skip past the early data
3931 * and ignore it. So, since the application must add calls to
3932 * SSL_read_early_data(), we also require them to add
3933 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3934 * eliminating the bandwidth-wasting early data in the case described
3937 ret->max_early_data = 0;
3940 * Default recv_max_early_data is a fully loaded single record. Could be
3941 * split across multiple records in practice. We set this differently to
3942 * max_early_data so that, in the default case, we do not advertise any
3943 * support for early_data, but if a client were to send us some (e.g.
3944 * because of an old, stale ticket) then we will tolerate it and skip over
3947 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3949 /* By default we send two session tickets automatically in TLSv1.3 */
3950 ret->num_tickets = 2;
3952 ssl_ctx_system_config(ret);
3960 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3962 return SSL_CTX_new_ex(NULL, NULL, meth);
3965 int SSL_CTX_up_ref(SSL_CTX *ctx)
3969 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3972 REF_PRINT_COUNT("SSL_CTX", ctx);
3973 REF_ASSERT_ISNT(i < 2);
3974 return ((i > 1) ? 1 : 0);
3977 void SSL_CTX_free(SSL_CTX *a)
3985 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3986 REF_PRINT_COUNT("SSL_CTX", a);
3989 REF_ASSERT_ISNT(i < 0);
3991 X509_VERIFY_PARAM_free(a->param);
3992 dane_ctx_final(&a->dane);
3995 * Free internal session cache. However: the remove_cb() may reference
3996 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3997 * after the sessions were flushed.
3998 * As the ex_data handling routines might also touch the session cache,
3999 * the most secure solution seems to be: empty (flush) the cache, then
4000 * free ex_data, then finally free the cache.
4001 * (See ticket [openssl.org #212].)
4003 if (a->sessions != NULL)
4004 SSL_CTX_flush_sessions(a, 0);
4006 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4007 lh_SSL_SESSION_free(a->sessions);
4008 X509_STORE_free(a->cert_store);
4009 #ifndef OPENSSL_NO_CT
4010 CTLOG_STORE_free(a->ctlog_store);
4012 sk_SSL_CIPHER_free(a->cipher_list);
4013 sk_SSL_CIPHER_free(a->cipher_list_by_id);
4014 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4015 ssl_cert_free(a->cert);
4016 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4017 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4018 OSSL_STACK_OF_X509_free(a->extra_certs);
4019 a->comp_methods = NULL;
4020 #ifndef OPENSSL_NO_SRTP
4021 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4023 #ifndef OPENSSL_NO_SRP
4024 ssl_ctx_srp_ctx_free_intern(a);
4026 #ifndef OPENSSL_NO_ENGINE
4027 tls_engine_finish(a->client_cert_engine);
4030 OPENSSL_free(a->ext.ecpointformats);
4031 OPENSSL_free(a->ext.supportedgroups);
4032 OPENSSL_free(a->ext.supported_groups_default);
4033 OPENSSL_free(a->ext.alpn);
4034 OPENSSL_secure_free(a->ext.secure);
4036 ssl_evp_md_free(a->md5);
4037 ssl_evp_md_free(a->sha1);
4039 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4040 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4041 for (j = 0; j < SSL_MD_NUM_IDX; j++)
4042 ssl_evp_md_free(a->ssl_digest_methods[j]);
4043 for (j = 0; j < a->group_list_len; j++) {
4044 OPENSSL_free(a->group_list[j].tlsname);
4045 OPENSSL_free(a->group_list[j].realname);
4046 OPENSSL_free(a->group_list[j].algorithm);
4048 OPENSSL_free(a->group_list);
4050 OPENSSL_free(a->sigalg_lookup_cache);
4052 CRYPTO_THREAD_lock_free(a->lock);
4053 #ifdef TSAN_REQUIRES_LOCKING
4054 CRYPTO_THREAD_lock_free(a->tsan_lock);
4057 OPENSSL_free(a->propq);
4062 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4064 ctx->default_passwd_callback = cb;
4067 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4069 ctx->default_passwd_callback_userdata = u;
4072 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4074 return ctx->default_passwd_callback;
4077 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4079 return ctx->default_passwd_callback_userdata;
4082 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4084 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4089 sc->default_passwd_callback = cb;
4092 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4094 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4099 sc->default_passwd_callback_userdata = u;
4102 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4104 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4109 return sc->default_passwd_callback;
4112 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4114 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4119 return sc->default_passwd_callback_userdata;
4122 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4123 int (*cb) (X509_STORE_CTX *, void *),
4126 ctx->app_verify_callback = cb;
4127 ctx->app_verify_arg = arg;
4130 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4131 int (*cb) (int, X509_STORE_CTX *))
4133 ctx->verify_mode = mode;
4134 ctx->default_verify_callback = cb;
4137 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4139 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4142 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4144 ssl_cert_set_cert_cb(c->cert, cb, arg);
4147 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4149 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4154 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4157 void ssl_set_masks(SSL_CONNECTION *s)
4160 uint32_t *pvalid = s->s3.tmp.valid_flags;
4161 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4162 unsigned long mask_k, mask_a;
4163 int have_ecc_cert, ecdsa_ok;
4168 dh_tmp = (c->dh_tmp != NULL
4169 || c->dh_tmp_cb != NULL
4172 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4173 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4174 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4175 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4179 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4180 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4182 #ifndef OPENSSL_NO_GOST
4183 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4184 mask_k |= SSL_kGOST | SSL_kGOST18;
4185 mask_a |= SSL_aGOST12;
4187 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4188 mask_k |= SSL_kGOST | SSL_kGOST18;
4189 mask_a |= SSL_aGOST12;
4191 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4192 mask_k |= SSL_kGOST;
4193 mask_a |= SSL_aGOST01;
4204 * If we only have an RSA-PSS certificate allow RSA authentication
4205 * if TLS 1.2 and peer supports it.
4208 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4209 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4210 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4217 mask_a |= SSL_aNULL;
4220 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4221 * depending on the key usage extension.
4223 if (have_ecc_cert) {
4225 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4226 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4227 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4230 mask_a |= SSL_aECDSA;
4232 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4233 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4234 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4235 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4236 mask_a |= SSL_aECDSA;
4238 /* Allow Ed448 for TLS 1.2 if peer supports it */
4239 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4240 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4241 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4242 mask_a |= SSL_aECDSA;
4244 mask_k |= SSL_kECDHE;
4246 #ifndef OPENSSL_NO_PSK
4249 if (mask_k & SSL_kRSA)
4250 mask_k |= SSL_kRSAPSK;
4251 if (mask_k & SSL_kDHE)
4252 mask_k |= SSL_kDHEPSK;
4253 if (mask_k & SSL_kECDHE)
4254 mask_k |= SSL_kECDHEPSK;
4257 s->s3.tmp.mask_k = mask_k;
4258 s->s3.tmp.mask_a = mask_a;
4261 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4263 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4264 /* key usage, if present, must allow signing */
4265 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4266 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4270 return 1; /* all checks are ok */
4273 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4274 const unsigned char **serverinfo,
4275 size_t *serverinfo_length)
4277 CERT_PKEY *cpk = s->s3.tmp.cert;
4278 *serverinfo_length = 0;
4280 if (cpk == NULL || cpk->serverinfo == NULL)
4283 *serverinfo = cpk->serverinfo;
4284 *serverinfo_length = cpk->serverinfo_length;
4288 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4293 * If the session_id_length is 0, we are not supposed to cache it, and it
4294 * would be rather hard to do anyway :-)
4296 if (s->session->session_id_length == 0)
4300 * If sid_ctx_length is 0 there is no specific application context
4301 * associated with this session, so when we try to resume it and
4302 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4303 * indication that this is actually a session for the proper application
4304 * context, and the *handshake* will fail, not just the resumption attempt.
4305 * Do not cache (on the server) these sessions that are not resumable
4306 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4308 if (s->server && s->session->sid_ctx_length == 0
4309 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4312 i = s->session_ctx->session_cache_mode;
4314 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4316 * Add the session to the internal cache. In server side TLSv1.3 we
4317 * normally don't do this because by default it's a full stateless ticket
4318 * with only a dummy session id so there is no reason to cache it,
4320 * - we are doing early_data, in which case we cache so that we can
4322 * - the application has set a remove_session_cb so needs to know about
4323 * session timeout events
4324 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4326 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4327 && (!SSL_CONNECTION_IS_TLS13(s)
4329 || (s->max_early_data > 0
4330 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4331 || s->session_ctx->remove_session_cb != NULL
4332 || (s->options & SSL_OP_NO_TICKET) != 0))
4333 SSL_CTX_add_session(s->session_ctx, s->session);
4336 * Add the session to the external cache. We do this even in server side
4337 * TLSv1.3 without early data because some applications just want to
4338 * know about the creation of a session and aren't doing a full cache.
4340 if (s->session_ctx->new_session_cb != NULL) {
4341 SSL_SESSION_up_ref(s->session);
4342 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4344 SSL_SESSION_free(s->session);
4348 /* auto flush every 255 connections */
4349 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4350 TSAN_QUALIFIER int *stat;
4352 if (mode & SSL_SESS_CACHE_CLIENT)
4353 stat = &s->session_ctx->stats.sess_connect_good;
4355 stat = &s->session_ctx->stats.sess_accept_good;
4356 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4357 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4361 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4366 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4371 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4374 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4376 /* TODO(QUIC): Do we want this for QUIC? */
4378 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4381 if (s->method != meth) {
4382 const SSL_METHOD *sm = s->method;
4383 int (*hf) (SSL *) = sc->handshake_func;
4385 if (sm->version == meth->version)
4390 ret = s->method->ssl_init(s);
4393 if (hf == sm->ssl_connect)
4394 sc->handshake_func = meth->ssl_connect;
4395 else if (hf == sm->ssl_accept)
4396 sc->handshake_func = meth->ssl_accept;
4401 int SSL_get_error(const SSL *s, int i)
4406 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4407 #ifndef OPENSSL_NO_QUIC
4408 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
4412 return SSL_ERROR_NONE;
4414 #ifndef OPENSSL_NO_QUIC
4416 reason = ossl_quic_get_error(qc, i);
4417 if (reason != SSL_ERROR_NONE)
4423 return SSL_ERROR_SSL;
4426 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4427 * where we do encode the error
4429 if ((l = ERR_peek_error()) != 0) {
4430 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4431 return SSL_ERROR_SYSCALL;
4433 return SSL_ERROR_SSL;
4436 #ifndef OPENSSL_NO_QUIC
4440 if (SSL_want_read(s)) {
4441 bio = SSL_get_rbio(s);
4442 if (BIO_should_read(bio))
4443 return SSL_ERROR_WANT_READ;
4444 else if (BIO_should_write(bio))
4446 * This one doesn't make too much sense ... We never try to
4447 * write to the rbio, and an application program where rbio and
4448 * wbio are separate couldn't even know what it should wait for.
4449 * However if we ever set s->rwstate incorrectly (so that we
4450 * have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4451 * and wbio *are* the same, this test works around that bug; so
4452 * it might be safer to keep it.
4454 return SSL_ERROR_WANT_WRITE;
4455 else if (BIO_should_io_special(bio)) {
4456 reason = BIO_get_retry_reason(bio);
4457 if (reason == BIO_RR_CONNECT)
4458 return SSL_ERROR_WANT_CONNECT;
4459 else if (reason == BIO_RR_ACCEPT)
4460 return SSL_ERROR_WANT_ACCEPT;
4462 return SSL_ERROR_SYSCALL; /* unknown */
4466 if (SSL_want_write(s)) {
4468 * Access wbio directly - in order to use the buffered bio if
4472 if (BIO_should_write(bio))
4473 return SSL_ERROR_WANT_WRITE;
4474 else if (BIO_should_read(bio))
4476 * See above (SSL_want_read(s) with BIO_should_write(bio))
4478 return SSL_ERROR_WANT_READ;
4479 else if (BIO_should_io_special(bio)) {
4480 reason = BIO_get_retry_reason(bio);
4481 if (reason == BIO_RR_CONNECT)
4482 return SSL_ERROR_WANT_CONNECT;
4483 else if (reason == BIO_RR_ACCEPT)
4484 return SSL_ERROR_WANT_ACCEPT;
4486 return SSL_ERROR_SYSCALL;
4491 if (SSL_want_x509_lookup(s))
4492 return SSL_ERROR_WANT_X509_LOOKUP;
4493 if (SSL_want_retry_verify(s))
4494 return SSL_ERROR_WANT_RETRY_VERIFY;
4495 if (SSL_want_async(s))
4496 return SSL_ERROR_WANT_ASYNC;
4497 if (SSL_want_async_job(s))
4498 return SSL_ERROR_WANT_ASYNC_JOB;
4499 if (SSL_want_client_hello_cb(s))
4500 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4502 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4503 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4504 return SSL_ERROR_ZERO_RETURN;
4506 return SSL_ERROR_SYSCALL;
4509 static int ssl_do_handshake_intern(void *vargs)
4511 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4513 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4518 return sc->handshake_func(s);
4521 int SSL_do_handshake(SSL *s)
4524 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4525 #ifndef OPENSSL_NO_QUIC
4526 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4529 return ossl_quic_do_handshake(qc);
4532 if (sc->handshake_func == NULL) {
4533 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4537 ossl_statem_check_finish_init(sc, -1);
4539 s->method->ssl_renegotiate_check(s, 0);
4541 if (SSL_in_init(s) || SSL_in_before(s)) {
4542 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4543 struct ssl_async_args args;
4545 memset(&args, 0, sizeof(args));
4548 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4550 ret = sc->handshake_func(s);
4556 void SSL_set_accept_state(SSL *s)
4558 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4559 #ifndef OPENSSL_NO_QUIC
4560 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4563 ossl_quic_set_accept_state(qc);
4570 ossl_statem_clear(sc);
4571 sc->handshake_func = s->method->ssl_accept;
4572 /* Ignore return value. Its a void public API function */
4573 clear_record_layer(sc);
4576 void SSL_set_connect_state(SSL *s)
4578 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4579 #ifndef OPENSSL_NO_QUIC
4580 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4583 ossl_quic_set_connect_state(qc);
4590 ossl_statem_clear(sc);
4591 sc->handshake_func = s->method->ssl_connect;
4592 /* Ignore return value. Its a void public API function */
4593 clear_record_layer(sc);
4596 int ssl_undefined_function(SSL *s)
4598 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4602 int ssl_undefined_void_function(void)
4604 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4608 int ssl_undefined_const_function(const SSL *s)
4613 const SSL_METHOD *ssl_bad_method(int ver)
4615 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4619 const char *ssl_protocol_to_string(int version)
4623 case TLS1_3_VERSION:
4626 case TLS1_2_VERSION:
4629 case TLS1_1_VERSION:
4644 case DTLS1_2_VERSION:
4652 const char *SSL_get_version(const SSL *s)
4654 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4659 return ssl_protocol_to_string(sc->version);
4662 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4664 STACK_OF(X509_NAME) *sk;
4673 if ((sk = sk_X509_NAME_new_null()) == NULL)
4675 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4676 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4678 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4681 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4683 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4692 SSL *SSL_dup(SSL *s)
4696 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4697 SSL_CONNECTION *retsc;
4698 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4703 /* If we're not quiescent, just up_ref! */
4704 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4705 CRYPTO_UP_REF(&s->references, &i, s->lock);
4710 * Otherwise, copy configuration state, and session if set.
4712 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4714 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4717 if (sc->session != NULL) {
4719 * Arranges to share the same session via up_ref. This "copies"
4720 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4722 if (!SSL_copy_session_id(ret, s))
4726 * No session has been established yet, so we have to expect that
4727 * s->cert or ret->cert will be changed later -- they should not both
4728 * point to the same object, and thus we can't use
4729 * SSL_copy_session_id.
4731 if (!SSL_set_ssl_method(ret, s->method))
4734 if (sc->cert != NULL) {
4735 ssl_cert_free(retsc->cert);
4736 retsc->cert = ssl_cert_dup(sc->cert);
4737 if (retsc->cert == NULL)
4741 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4742 (int)sc->sid_ctx_length))
4746 if (!ssl_dane_dup(retsc, sc))
4748 retsc->version = sc->version;
4749 retsc->options = sc->options;
4750 retsc->min_proto_version = sc->min_proto_version;
4751 retsc->max_proto_version = sc->max_proto_version;
4752 retsc->mode = sc->mode;
4753 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4754 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4755 retsc->msg_callback = sc->msg_callback;
4756 retsc->msg_callback_arg = sc->msg_callback_arg;
4757 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4758 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4759 retsc->generate_session_id = sc->generate_session_id;
4761 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4763 /* copy app data, a little dangerous perhaps */
4764 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4767 retsc->server = sc->server;
4768 if (sc->handshake_func) {
4770 SSL_set_accept_state(ret);
4772 SSL_set_connect_state(ret);
4774 retsc->shutdown = sc->shutdown;
4775 retsc->hit = sc->hit;
4777 retsc->default_passwd_callback = sc->default_passwd_callback;
4778 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4780 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4782 /* dup the cipher_list and cipher_list_by_id stacks */
4783 if (sc->cipher_list != NULL) {
4784 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4787 if (sc->cipher_list_by_id != NULL)
4788 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4792 /* Dup the client_CA list */
4793 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4794 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4804 X509 *SSL_get_certificate(const SSL *s)
4806 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4811 if (sc->cert != NULL)
4812 return sc->cert->key->x509;
4817 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4819 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4824 if (sc->cert != NULL)
4825 return sc->cert->key->privatekey;
4830 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4832 if (ctx->cert != NULL)
4833 return ctx->cert->key->x509;
4838 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4840 if (ctx->cert != NULL)
4841 return ctx->cert->key->privatekey;
4846 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4848 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4853 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4854 return sc->session->cipher;
4858 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4860 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4865 return sc->s3.tmp.new_cipher;
4868 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4870 #ifndef OPENSSL_NO_COMP
4871 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4876 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4882 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4884 #ifndef OPENSSL_NO_COMP
4885 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4890 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4896 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4900 if (s->bbio != NULL) {
4901 /* Already buffered. */
4905 bbio = BIO_new(BIO_f_buffer());
4906 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
4908 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4912 s->wbio = BIO_push(bbio, s->wbio);
4914 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4919 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4921 /* callers ensure s is never null */
4922 if (s->bbio == NULL)
4925 s->wbio = BIO_pop(s->wbio);
4926 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4934 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4936 ctx->quiet_shutdown = mode;
4939 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4941 return ctx->quiet_shutdown;
4944 void SSL_set_quiet_shutdown(SSL *s, int mode)
4946 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4948 /* TODO(QUIC): Do we want this for QUIC? */
4952 sc->quiet_shutdown = mode;
4955 int SSL_get_quiet_shutdown(const SSL *s)
4957 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4959 /* TODO(QUIC): Do we want this for QUIC? */
4963 return sc->quiet_shutdown;
4966 void SSL_set_shutdown(SSL *s, int mode)
4968 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4970 /* TODO(QUIC): Do we want this for QUIC? */
4974 sc->shutdown = mode;
4977 int SSL_get_shutdown(const SSL *s)
4979 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4981 /* TODO(QUIC): Do we want this for QUIC? */
4985 return sc->shutdown;
4988 int SSL_version(const SSL *s)
4990 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4992 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4999 int SSL_client_version(const SSL *s)
5001 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5003 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5007 return sc->client_version;
5010 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
5015 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
5018 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5020 /* TODO(QUIC): Do we need this for QUIC support? */
5024 if (ssl->ctx == ctx)
5027 ctx = sc->session_ctx;
5028 new_cert = ssl_cert_dup(ctx->cert);
5029 if (new_cert == NULL) {
5033 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5034 ssl_cert_free(new_cert);
5038 ssl_cert_free(sc->cert);
5039 sc->cert = new_cert;
5042 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5043 * so setter APIs must prevent invalid lengths from entering the system.
5045 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5049 * If the session ID context matches that of the parent SSL_CTX,
5050 * inherit it from the new SSL_CTX as well. If however the context does
5051 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5052 * leave it unchanged.
5054 if ((ssl->ctx != NULL) &&
5055 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5056 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5057 sc->sid_ctx_length = ctx->sid_ctx_length;
5058 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5061 SSL_CTX_up_ref(ctx);
5062 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5068 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5070 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5074 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5076 X509_LOOKUP *lookup;
5078 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5082 /* We ignore errors, in case the directory doesn't exist */
5085 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5092 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5094 X509_LOOKUP *lookup;
5096 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5100 /* We ignore errors, in case the file doesn't exist */
5103 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5111 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5113 X509_LOOKUP *lookup;
5115 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5119 /* We ignore errors, in case the directory doesn't exist */
5122 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5129 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5131 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5135 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5137 return X509_STORE_load_path(ctx->cert_store, CApath);
5140 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5142 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5146 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5149 if (CAfile == NULL && CApath == NULL)
5151 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5153 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5158 void SSL_set_info_callback(SSL *ssl,
5159 void (*cb) (const SSL *ssl, int type, int val))
5161 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5166 sc->info_callback = cb;
5170 * One compiler (Diab DCC) doesn't like argument names in returned function
5173 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5176 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5181 return sc->info_callback;
5184 void SSL_set_verify_result(SSL *ssl, long arg)
5186 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5191 sc->verify_result = arg;
5194 long SSL_get_verify_result(const SSL *ssl)
5196 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5201 return sc->verify_result;
5204 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5206 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5212 return sizeof(sc->s3.client_random);
5213 if (outlen > sizeof(sc->s3.client_random))
5214 outlen = sizeof(sc->s3.client_random);
5215 memcpy(out, sc->s3.client_random, outlen);
5219 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5221 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5227 return sizeof(sc->s3.server_random);
5228 if (outlen > sizeof(sc->s3.server_random))
5229 outlen = sizeof(sc->s3.server_random);
5230 memcpy(out, sc->s3.server_random, outlen);
5234 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5235 unsigned char *out, size_t outlen)
5238 return session->master_key_length;
5239 if (outlen > session->master_key_length)
5240 outlen = session->master_key_length;
5241 memcpy(out, session->master_key, outlen);
5245 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5248 if (len > sizeof(sess->master_key))
5251 memcpy(sess->master_key, in, len);
5252 sess->master_key_length = len;
5257 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5259 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5262 void *SSL_get_ex_data(const SSL *s, int idx)
5264 return CRYPTO_get_ex_data(&s->ex_data, idx);
5267 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5269 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5272 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5274 return CRYPTO_get_ex_data(&s->ex_data, idx);
5277 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5279 return ctx->cert_store;
5282 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5284 X509_STORE_free(ctx->cert_store);
5285 ctx->cert_store = store;
5288 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5291 X509_STORE_up_ref(store);
5292 SSL_CTX_set_cert_store(ctx, store);
5295 int SSL_want(const SSL *s)
5297 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5305 #ifndef OPENSSL_NO_PSK
5306 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5308 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5309 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5312 OPENSSL_free(ctx->cert->psk_identity_hint);
5313 if (identity_hint != NULL) {
5314 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5315 if (ctx->cert->psk_identity_hint == NULL)
5318 ctx->cert->psk_identity_hint = NULL;
5322 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5324 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5329 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5330 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5333 OPENSSL_free(sc->cert->psk_identity_hint);
5334 if (identity_hint != NULL) {
5335 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5336 if (sc->cert->psk_identity_hint == NULL)
5339 sc->cert->psk_identity_hint = NULL;
5343 const char *SSL_get_psk_identity_hint(const SSL *s)
5345 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5347 if (sc == NULL || sc->session == NULL)
5350 return sc->session->psk_identity_hint;
5353 const char *SSL_get_psk_identity(const SSL *s)
5355 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5357 if (sc == NULL || sc->session == NULL)
5360 return sc->session->psk_identity;
5363 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5365 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5370 sc->psk_client_callback = cb;
5373 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5375 ctx->psk_client_callback = cb;
5378 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5380 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5385 sc->psk_server_callback = cb;
5388 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5390 ctx->psk_server_callback = cb;
5394 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5396 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5401 sc->psk_find_session_cb = cb;
5404 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5405 SSL_psk_find_session_cb_func cb)
5407 ctx->psk_find_session_cb = cb;
5410 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5412 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5417 sc->psk_use_session_cb = cb;
5420 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5421 SSL_psk_use_session_cb_func cb)
5423 ctx->psk_use_session_cb = cb;
5426 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5427 void (*cb) (int write_p, int version,
5428 int content_type, const void *buf,
5429 size_t len, SSL *ssl, void *arg))
5431 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5434 void SSL_set_msg_callback(SSL *ssl,
5435 void (*cb) (int write_p, int version,
5436 int content_type, const void *buf,
5437 size_t len, SSL *ssl, void *arg))
5439 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5442 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5443 int (*cb) (SSL *ssl,
5447 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5448 (void (*)(void))cb);
5451 void SSL_set_not_resumable_session_callback(SSL *ssl,
5452 int (*cb) (SSL *ssl,
5453 int is_forward_secure))
5455 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5456 (void (*)(void))cb);
5459 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5460 size_t (*cb) (SSL *ssl, int type,
5461 size_t len, void *arg))
5463 ctx->record_padding_cb = cb;
5466 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5468 ctx->record_padding_arg = arg;
5471 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5473 return ctx->record_padding_arg;
5476 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5478 /* block size of 0 or 1 is basically no padding */
5479 if (block_size == 1)
5480 ctx->block_padding = 0;
5481 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5482 ctx->block_padding = block_size;
5488 int SSL_set_record_padding_callback(SSL *ssl,
5489 size_t (*cb) (SSL *ssl, int type,
5490 size_t len, void *arg))
5493 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5498 b = SSL_get_wbio(ssl);
5499 if (b == NULL || !BIO_get_ktls_send(b)) {
5500 sc->rlayer.record_padding_cb = cb;
5506 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5508 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5513 sc->rlayer.record_padding_arg = arg;
5516 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5518 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5523 return sc->rlayer.record_padding_arg;
5526 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5528 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5533 /* block size of 0 or 1 is basically no padding */
5534 if (block_size == 1)
5535 sc->rlayer.block_padding = 0;
5536 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5537 sc->rlayer.block_padding = block_size;
5543 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5545 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5550 sc->num_tickets = num_tickets;
5555 size_t SSL_get_num_tickets(const SSL *s)
5557 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5562 return sc->num_tickets;
5565 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5567 ctx->num_tickets = num_tickets;
5572 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5574 return ctx->num_tickets;
5577 /* Retrieve handshake hashes */
5578 int ssl_handshake_hash(SSL_CONNECTION *s,
5579 unsigned char *out, size_t outlen,
5582 EVP_MD_CTX *ctx = NULL;
5583 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5584 int hashleni = EVP_MD_CTX_get_size(hdgst);
5587 if (hashleni < 0 || (size_t)hashleni > outlen) {
5588 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5592 ctx = EVP_MD_CTX_new();
5594 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5598 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5599 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5600 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5604 *hashlen = hashleni;
5608 EVP_MD_CTX_free(ctx);
5612 int SSL_session_reused(const SSL *s)
5614 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5622 int SSL_is_server(const SSL *s)
5624 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5632 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5633 void SSL_set_debug(SSL *s, int debug)
5635 /* Old function was do-nothing anyway... */
5641 void SSL_set_security_level(SSL *s, int level)
5643 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5648 sc->cert->sec_level = level;
5651 int SSL_get_security_level(const SSL *s)
5653 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5658 return sc->cert->sec_level;
5661 void SSL_set_security_callback(SSL *s,
5662 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5663 int op, int bits, int nid,
5664 void *other, void *ex))
5666 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5671 sc->cert->sec_cb = cb;
5674 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5675 const SSL_CTX *ctx, int op,
5676 int bits, int nid, void *other,
5678 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5683 return sc->cert->sec_cb;
5686 void SSL_set0_security_ex_data(SSL *s, void *ex)
5688 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5693 sc->cert->sec_ex = ex;
5696 void *SSL_get0_security_ex_data(const SSL *s)
5698 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5703 return sc->cert->sec_ex;
5706 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5708 ctx->cert->sec_level = level;
5711 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5713 return ctx->cert->sec_level;
5716 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5717 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5718 int op, int bits, int nid,
5719 void *other, void *ex))
5721 ctx->cert->sec_cb = cb;
5724 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5730 return ctx->cert->sec_cb;
5733 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5735 ctx->cert->sec_ex = ex;
5738 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5740 return ctx->cert->sec_ex;
5743 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5745 return ctx->options;
5748 uint64_t SSL_get_options(const SSL *s)
5750 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5758 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5760 return ctx->options |= op;
5763 uint64_t SSL_set_options(SSL *s, uint64_t op)
5765 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5766 OSSL_PARAM options[2], *opts = options;
5773 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5775 *opts = OSSL_PARAM_construct_end();
5777 /* Ignore return value */
5778 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5783 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5785 return ctx->options &= ~op;
5788 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5790 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5795 return sc->options &= ~op;
5798 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5800 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5805 return sc->verified_chain;
5808 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5810 #ifndef OPENSSL_NO_CT
5813 * Moves SCTs from the |src| stack to the |dst| stack.
5814 * The source of each SCT will be set to |origin|.
5815 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5817 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5819 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5820 sct_source_t origin)
5826 *dst = sk_SCT_new_null();
5828 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5833 while ((sct = sk_SCT_pop(src)) != NULL) {
5834 if (SCT_set_source(sct, origin) != 1)
5837 if (sk_SCT_push(*dst, sct) <= 0)
5845 sk_SCT_push(src, sct); /* Put the SCT back */
5850 * Look for data collected during ServerHello and parse if found.
5851 * Returns the number of SCTs extracted.
5853 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5855 int scts_extracted = 0;
5857 if (s->ext.scts != NULL) {
5858 const unsigned char *p = s->ext.scts;
5859 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5861 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5863 SCT_LIST_free(scts);
5866 return scts_extracted;
5870 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5871 * contains an SCT X509 extension. They will be stored in |s->scts|.
5873 * - The number of SCTs extracted, assuming an OCSP response exists.
5874 * - 0 if no OCSP response exists or it contains no SCTs.
5875 * - A negative integer if an error occurs.
5877 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5879 # ifndef OPENSSL_NO_OCSP
5880 int scts_extracted = 0;
5881 const unsigned char *p;
5882 OCSP_BASICRESP *br = NULL;
5883 OCSP_RESPONSE *rsp = NULL;
5884 STACK_OF(SCT) *scts = NULL;
5887 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5890 p = s->ext.ocsp.resp;
5891 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5895 br = OCSP_response_get1_basic(rsp);
5899 for (i = 0; i < OCSP_resp_count(br); ++i) {
5900 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5906 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5908 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5909 if (scts_extracted < 0)
5913 SCT_LIST_free(scts);
5914 OCSP_BASICRESP_free(br);
5915 OCSP_RESPONSE_free(rsp);
5916 return scts_extracted;
5918 /* Behave as if no OCSP response exists */
5924 * Attempts to extract SCTs from the peer certificate.
5925 * Return the number of SCTs extracted, or a negative integer if an error
5928 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5930 int scts_extracted = 0;
5931 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5934 STACK_OF(SCT) *scts =
5935 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5938 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5940 SCT_LIST_free(scts);
5943 return scts_extracted;
5947 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5948 * response (if it exists) and X509v3 extensions in the certificate.
5949 * Returns NULL if an error occurs.
5951 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5953 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5958 if (!sc->scts_parsed) {
5959 if (ct_extract_tls_extension_scts(sc) < 0 ||
5960 ct_extract_ocsp_response_scts(sc) < 0 ||
5961 ct_extract_x509v3_extension_scts(sc) < 0)
5964 sc->scts_parsed = 1;
5971 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5972 const STACK_OF(SCT) *scts, void *unused_arg)
5977 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5978 const STACK_OF(SCT) *scts, void *unused_arg)
5980 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5983 for (i = 0; i < count; ++i) {
5984 SCT *sct = sk_SCT_value(scts, i);
5985 int status = SCT_get_validation_status(sct);
5987 if (status == SCT_VALIDATION_STATUS_VALID)
5990 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5994 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5997 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6003 * Since code exists that uses the custom extension handler for CT, look
6004 * for this and throw an error if they have already registered to use CT.
6006 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6007 TLSEXT_TYPE_signed_certificate_timestamp))
6009 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6013 if (callback != NULL) {
6015 * If we are validating CT, then we MUST accept SCTs served via OCSP
6017 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6021 sc->ct_validation_callback = callback;
6022 sc->ct_validation_callback_arg = arg;
6027 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6028 ssl_ct_validation_cb callback, void *arg)
6031 * Since code exists that uses the custom extension handler for CT, look for
6032 * this and throw an error if they have already registered to use CT.
6034 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6035 TLSEXT_TYPE_signed_certificate_timestamp))
6037 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6041 ctx->ct_validation_callback = callback;
6042 ctx->ct_validation_callback_arg = arg;
6046 int SSL_ct_is_enabled(const SSL *s)
6048 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6053 return sc->ct_validation_callback != NULL;
6056 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6058 return ctx->ct_validation_callback != NULL;
6061 int ssl_validate_ct(SSL_CONNECTION *s)
6064 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6066 SSL_DANE *dane = &s->dane;
6067 CT_POLICY_EVAL_CTX *ctx = NULL;
6068 const STACK_OF(SCT) *scts;
6071 * If no callback is set, the peer is anonymous, or its chain is invalid,
6072 * skip SCT validation - just return success. Applications that continue
6073 * handshakes without certificates, with unverified chains, or pinned leaf
6074 * certificates are outside the scope of the WebPKI and CT.
6076 * The above exclusions notwithstanding the vast majority of peers will
6077 * have rather ordinary certificate chains validated by typical
6078 * applications that perform certificate verification and therefore will
6079 * process SCTs when enabled.
6081 if (s->ct_validation_callback == NULL || cert == NULL ||
6082 s->verify_result != X509_V_OK ||
6083 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6087 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6088 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6090 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6091 switch (dane->mtlsa->usage) {
6092 case DANETLS_USAGE_DANE_TA:
6093 case DANETLS_USAGE_DANE_EE:
6098 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6099 SSL_CONNECTION_GET_CTX(s)->propq);
6101 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6105 issuer = sk_X509_value(s->verified_chain, 1);
6106 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6107 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6108 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6109 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6110 CT_POLICY_EVAL_CTX_set_time(
6111 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6113 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6116 * This function returns success (> 0) only when all the SCTs are valid, 0
6117 * when some are invalid, and < 0 on various internal errors (out of
6118 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6119 * reason to abort the handshake, that decision is up to the callback.
6120 * Therefore, we error out only in the unexpected case that the return
6121 * value is negative.
6123 * XXX: One might well argue that the return value of this function is an
6124 * unfortunate design choice. Its job is only to determine the validation
6125 * status of each of the provided SCTs. So long as it correctly separates
6126 * the wheat from the chaff it should return success. Failure in this case
6127 * ought to correspond to an inability to carry out its duties.
6129 if (SCT_LIST_validate(scts, ctx) < 0) {
6130 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6134 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6136 ret = 0; /* This function returns 0 on failure */
6138 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6141 CT_POLICY_EVAL_CTX_free(ctx);
6143 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6144 * failure return code here. Also the application may wish the complete
6145 * the handshake, and then disconnect cleanly at a higher layer, after
6146 * checking the verification status of the completed connection.
6148 * We therefore force a certificate verification failure which will be
6149 * visible via SSL_get_verify_result() and cached as part of any resumed
6152 * Note: the permissive callback is for information gathering only, always
6153 * returns success, and does not affect verification status. Only the
6154 * strict callback or a custom application-specified callback can trigger
6155 * connection failure or record a verification error.
6158 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6162 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6164 switch (validation_mode) {
6166 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6168 case SSL_CT_VALIDATION_PERMISSIVE:
6169 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6170 case SSL_CT_VALIDATION_STRICT:
6171 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6175 int SSL_enable_ct(SSL *s, int validation_mode)
6177 switch (validation_mode) {
6179 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6181 case SSL_CT_VALIDATION_PERMISSIVE:
6182 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6183 case SSL_CT_VALIDATION_STRICT:
6184 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6188 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6190 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6193 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6195 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6198 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6200 CTLOG_STORE_free(ctx->ctlog_store);
6201 ctx->ctlog_store = logs;
6204 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6206 return ctx->ctlog_store;
6209 #endif /* OPENSSL_NO_CT */
6211 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6214 c->client_hello_cb = cb;
6215 c->client_hello_cb_arg = arg;
6218 int SSL_client_hello_isv2(SSL *s)
6220 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6225 if (sc->clienthello == NULL)
6227 return sc->clienthello->isv2;
6230 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6232 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6237 if (sc->clienthello == NULL)
6239 return sc->clienthello->legacy_version;
6242 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6244 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6249 if (sc->clienthello == NULL)
6252 *out = sc->clienthello->random;
6253 return SSL3_RANDOM_SIZE;
6256 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6258 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6263 if (sc->clienthello == NULL)
6266 *out = sc->clienthello->session_id;
6267 return sc->clienthello->session_id_len;
6270 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6272 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6277 if (sc->clienthello == NULL)
6280 *out = PACKET_data(&sc->clienthello->ciphersuites);
6281 return PACKET_remaining(&sc->clienthello->ciphersuites);
6284 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6286 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6291 if (sc->clienthello == NULL)
6294 *out = sc->clienthello->compressions;
6295 return sc->clienthello->compressions_len;
6298 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6303 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6308 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6310 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6311 ext = sc->clienthello->pre_proc_exts + i;
6320 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6322 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6323 ext = sc->clienthello->pre_proc_exts + i;
6325 if (ext->received_order >= num)
6327 present[ext->received_order] = ext->type;
6334 OPENSSL_free(present);
6338 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6342 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6347 if (sc->clienthello == NULL || num_exts == NULL)
6349 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6350 ext = sc->clienthello->pre_proc_exts + i;
6362 if (*num_exts < num)
6364 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6365 ext = sc->clienthello->pre_proc_exts + i;
6367 if (ext->received_order >= num)
6369 exts[ext->received_order] = ext->type;
6376 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6381 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6386 if (sc->clienthello == NULL)
6388 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6389 r = sc->clienthello->pre_proc_exts + i;
6390 if (r->present && r->type == type) {
6392 *out = PACKET_data(&r->data);
6394 *outlen = PACKET_remaining(&r->data);
6401 int SSL_free_buffers(SSL *ssl)
6404 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6411 return rl->rrlmethod->free_buffers(rl->rrl)
6412 && rl->wrlmethod->free_buffers(rl->wrl);
6415 int SSL_alloc_buffers(SSL *ssl)
6418 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6425 return rl->rrlmethod->alloc_buffers(rl->rrl)
6426 && rl->wrlmethod->alloc_buffers(rl->wrl);
6429 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6431 ctx->keylog_callback = cb;
6434 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6436 return ctx->keylog_callback;
6439 static int nss_keylog_int(const char *prefix,
6441 const uint8_t *parameter_1,
6442 size_t parameter_1_len,
6443 const uint8_t *parameter_2,
6444 size_t parameter_2_len)
6447 char *cursor = NULL;
6451 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6453 if (sctx->keylog_callback == NULL)
6457 * Our output buffer will contain the following strings, rendered with
6458 * space characters in between, terminated by a NULL character: first the
6459 * prefix, then the first parameter, then the second parameter. The
6460 * meaning of each parameter depends on the specific key material being
6461 * logged. Note that the first and second parameters are encoded in
6462 * hexadecimal, so we need a buffer that is twice their lengths.
6464 prefix_len = strlen(prefix);
6465 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6466 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6469 strcpy(cursor, prefix);
6470 cursor += prefix_len;
6473 for (i = 0; i < parameter_1_len; i++) {
6474 sprintf(cursor, "%02x", parameter_1[i]);
6479 for (i = 0; i < parameter_2_len; i++) {
6480 sprintf(cursor, "%02x", parameter_2[i]);
6485 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6486 OPENSSL_clear_free(out, out_len);
6491 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6492 const uint8_t *encrypted_premaster,
6493 size_t encrypted_premaster_len,
6494 const uint8_t *premaster,
6495 size_t premaster_len)
6497 if (encrypted_premaster_len < 8) {
6498 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6502 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6503 return nss_keylog_int("RSA",
6505 encrypted_premaster,
6511 int ssl_log_secret(SSL_CONNECTION *sc,
6513 const uint8_t *secret,
6516 return nss_keylog_int(label,
6518 sc->s3.client_random,
6524 #define SSLV2_CIPHER_LEN 3
6526 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6530 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6532 if (PACKET_remaining(cipher_suites) == 0) {
6533 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6537 if (PACKET_remaining(cipher_suites) % n != 0) {
6538 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6542 OPENSSL_free(s->s3.tmp.ciphers_raw);
6543 s->s3.tmp.ciphers_raw = NULL;
6544 s->s3.tmp.ciphers_rawlen = 0;
6547 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6548 PACKET sslv2ciphers = *cipher_suites;
6549 unsigned int leadbyte;
6553 * We store the raw ciphers list in SSLv3+ format so we need to do some
6554 * preprocessing to convert the list first. If there are any SSLv2 only
6555 * ciphersuites with a non-zero leading byte then we are going to
6556 * slightly over allocate because we won't store those. But that isn't a
6559 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6560 s->s3.tmp.ciphers_raw = raw;
6562 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6565 for (s->s3.tmp.ciphers_rawlen = 0;
6566 PACKET_remaining(&sslv2ciphers) > 0;
6567 raw += TLS_CIPHER_LEN) {
6568 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6570 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6573 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6574 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6575 OPENSSL_free(s->s3.tmp.ciphers_raw);
6576 s->s3.tmp.ciphers_raw = NULL;
6577 s->s3.tmp.ciphers_rawlen = 0;
6581 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6583 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6584 &s->s3.tmp.ciphers_rawlen)) {
6585 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6591 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6592 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6593 STACK_OF(SSL_CIPHER) **scsvs)
6596 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6601 if (!PACKET_buf_init(&pkt, bytes, len))
6603 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6606 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6607 STACK_OF(SSL_CIPHER) **skp,
6608 STACK_OF(SSL_CIPHER) **scsvs_out,
6609 int sslv2format, int fatal)
6611 const SSL_CIPHER *c;
6612 STACK_OF(SSL_CIPHER) *sk = NULL;
6613 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6615 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6616 unsigned char cipher[SSLV2_CIPHER_LEN];
6618 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6620 if (PACKET_remaining(cipher_suites) == 0) {
6622 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6624 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6628 if (PACKET_remaining(cipher_suites) % n != 0) {
6630 SSLfatal(s, SSL_AD_DECODE_ERROR,
6631 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6633 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6637 sk = sk_SSL_CIPHER_new_null();
6638 scsvs = sk_SSL_CIPHER_new_null();
6639 if (sk == NULL || scsvs == NULL) {
6641 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6643 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6647 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6649 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6650 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6651 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6653 if (sslv2format && cipher[0] != '\0')
6656 /* For SSLv2-compat, ignore leading 0-byte. */
6657 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6659 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6660 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6662 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6664 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6669 if (PACKET_remaining(cipher_suites) > 0) {
6671 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6673 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6680 sk_SSL_CIPHER_free(sk);
6681 if (scsvs_out != NULL)
6684 sk_SSL_CIPHER_free(scsvs);
6687 sk_SSL_CIPHER_free(sk);
6688 sk_SSL_CIPHER_free(scsvs);
6692 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6694 ctx->max_early_data = max_early_data;
6699 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6701 return ctx->max_early_data;
6704 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6706 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6711 sc->max_early_data = max_early_data;
6716 uint32_t SSL_get_max_early_data(const SSL *s)
6718 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6723 return sc->max_early_data;
6726 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6728 ctx->recv_max_early_data = recv_max_early_data;
6733 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6735 return ctx->recv_max_early_data;
6738 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6740 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6745 sc->recv_max_early_data = recv_max_early_data;
6750 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6752 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6757 return sc->recv_max_early_data;
6760 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6762 /* Return any active Max Fragment Len extension */
6763 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6764 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6766 /* return current SSL connection setting */
6767 return sc->max_send_fragment;
6770 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6772 /* Return a value regarding an active Max Fragment Len extension */
6773 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6774 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6775 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6777 /* else limit |split_send_fragment| to current |max_send_fragment| */
6778 if (sc->split_send_fragment > sc->max_send_fragment)
6779 return sc->max_send_fragment;
6781 /* return current SSL connection setting */
6782 return sc->split_send_fragment;
6785 int SSL_stateless(SSL *s)
6788 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6790 /* TODO(QUIC): This will need further work. */
6794 /* Ensure there is no state left over from a previous invocation */
6800 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6801 ret = SSL_accept(s);
6802 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6804 if (ret > 0 && sc->ext.cookieok)
6807 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6813 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6815 ctx->pha_enabled = val;
6818 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6820 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6825 sc->pha_enabled = val;
6828 int SSL_verify_client_post_handshake(SSL *ssl)
6830 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6835 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6836 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6840 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6844 if (!SSL_is_init_finished(ssl)) {
6845 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6849 switch (sc->post_handshake_auth) {
6851 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6854 case SSL_PHA_EXT_SENT:
6855 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6857 case SSL_PHA_EXT_RECEIVED:
6859 case SSL_PHA_REQUEST_PENDING:
6860 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6862 case SSL_PHA_REQUESTED:
6863 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6867 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6869 /* checks verify_mode and algorithm_auth */
6870 if (!send_certificate_request(sc)) {
6871 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6872 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6876 ossl_statem_set_in_init(sc, 1);
6880 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6881 SSL_CTX_generate_session_ticket_fn gen_cb,
6882 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6885 ctx->generate_ticket_cb = gen_cb;
6886 ctx->decrypt_ticket_cb = dec_cb;
6887 ctx->ticket_cb_data = arg;
6891 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6892 SSL_allow_early_data_cb_fn cb,
6895 ctx->allow_early_data_cb = cb;
6896 ctx->allow_early_data_cb_data = arg;
6899 void SSL_set_allow_early_data_cb(SSL *s,
6900 SSL_allow_early_data_cb_fn cb,
6903 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6908 sc->allow_early_data_cb = cb;
6909 sc->allow_early_data_cb_data = arg;
6912 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6914 const char *properties)
6916 const EVP_CIPHER *ciph;
6918 ciph = tls_get_cipher_from_engine(nid);
6923 * If there is no engine cipher then we do an explicit fetch. This may fail
6924 * and that could be ok
6927 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6933 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6935 /* Don't up-ref an implicit EVP_CIPHER */
6936 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6940 * The cipher was explicitly fetched and therefore it is safe to cast
6943 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6946 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6951 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6953 * The cipher was explicitly fetched and therefore it is safe to cast
6956 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6960 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6962 const char *properties)
6966 md = tls_get_digest_from_engine(nid);
6970 /* Otherwise we do an explicit fetch */
6972 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6977 int ssl_evp_md_up_ref(const EVP_MD *md)
6979 /* Don't up-ref an implicit EVP_MD */
6980 if (EVP_MD_get0_provider(md) == NULL)
6984 * The digest was explicitly fetched and therefore it is safe to cast
6987 return EVP_MD_up_ref((EVP_MD *)md);
6990 void ssl_evp_md_free(const EVP_MD *md)
6995 if (EVP_MD_get0_provider(md) != NULL) {
6997 * The digest was explicitly fetched and therefore it is safe to cast
7000 EVP_MD_free((EVP_MD *)md);
7004 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
7006 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7011 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7012 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7013 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7016 EVP_PKEY_free(sc->cert->dh_tmp);
7017 sc->cert->dh_tmp = dhpkey;
7021 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
7023 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7024 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7025 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7028 EVP_PKEY_free(ctx->cert->dh_tmp);
7029 ctx->cert->dh_tmp = dhpkey;
7033 /* QUIC-specific methods which are supported on QUIC connections only. */
7034 int SSL_tick(SSL *s)
7037 #ifndef OPENSSL_NO_QUIC
7038 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7041 return ossl_quic_tick(qc);
7044 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7045 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7047 * DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7048 * which we consider a success case. Theoretically DTLSv1_handle_timeout
7049 * can also return 0 if s is NULL or not a DTLS object, but we've
7050 * already ruled out those possibilities above, so this is not possible
7051 * here. Thus the only failure cases are where DTLSv1_handle_timeout
7054 return DTLSv1_handle_timeout(s) >= 0;
7059 int SSL_get_tick_timeout(SSL *s, struct timeval *tv)
7062 #ifndef OPENSSL_NO_QUIC
7063 QUIC_CONNECTION *qc;
7065 qc = QUIC_CONNECTION_FROM_SSL(s);
7067 return ossl_quic_get_tick_timeout(qc, tv);
7070 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7071 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7072 && DTLSv1_get_timeout(s, tv))
7080 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7082 #ifndef OPENSSL_NO_QUIC
7083 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7088 return ossl_quic_get_rpoll_descriptor(qc, desc);
7094 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7096 #ifndef OPENSSL_NO_QUIC
7097 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7102 return ossl_quic_get_wpoll_descriptor(qc, desc);
7108 int SSL_net_read_desired(SSL *s)
7110 #ifndef OPENSSL_NO_QUIC
7111 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7116 return ossl_quic_get_net_read_desired(qc);
7122 int SSL_net_write_desired(SSL *s)
7124 #ifndef OPENSSL_NO_QUIC
7125 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7130 return ossl_quic_get_net_write_desired(qc);
7136 int SSL_set_blocking_mode(SSL *s, int blocking)
7138 #ifndef OPENSSL_NO_QUIC
7139 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7144 return ossl_quic_conn_set_blocking_mode(qc, blocking);
7150 int SSL_get_blocking_mode(SSL *s)
7152 #ifndef OPENSSL_NO_QUIC
7153 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7158 return ossl_quic_conn_get_blocking_mode(qc);
7164 int SSL_set_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr)
7166 #ifndef OPENSSL_NO_QUIC
7167 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7172 return ossl_quic_conn_set_initial_peer_addr(qc, peer_addr);