2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
13 #include "ssl_local.h"
14 #include "internal/e_os.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include <openssl/trace.h>
24 #include <openssl/core_names.h>
25 #include "internal/cryptlib.h"
26 #include "internal/refcount.h"
27 #include "internal/ktls.h"
29 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
30 unsigned char *s, size_t t, size_t *u)
32 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
35 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
37 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
40 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
41 size_t s, unsigned char *t)
43 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
46 static int ssl_undefined_function_6(int r)
48 return ssl_undefined_function(NULL);
51 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
52 size_t s, const char *t, size_t u,
53 const unsigned char *v, size_t w, int x)
55 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
58 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
60 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
63 SSL3_ENC_METHOD ssl3_undef_enc_method = {
64 ssl_undefined_function_8,
65 ssl_undefined_function_3,
66 ssl_undefined_function_4,
67 ssl_undefined_function_5,
68 NULL, /* client_finished_label */
69 0, /* client_finished_label_len */
70 NULL, /* server_finished_label */
71 0, /* server_finished_label_len */
72 ssl_undefined_function_6,
73 ssl_undefined_function_7,
76 struct ssl_async_args {
80 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
82 int (*func_read) (SSL *, void *, size_t, size_t *);
83 int (*func_write) (SSL *, const void *, size_t, size_t *);
84 int (*func_other) (SSL *);
94 DANETLS_MATCHING_FULL, 0, NID_undef
97 DANETLS_MATCHING_2256, 1, NID_sha256
100 DANETLS_MATCHING_2512, 2, NID_sha512
104 static int dane_ctx_enable(struct dane_ctx_st *dctx)
106 const EVP_MD **mdevp;
108 uint8_t mdmax = DANETLS_MATCHING_LAST;
109 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
112 if (dctx->mdevp != NULL)
115 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
116 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
118 if (mdord == NULL || mdevp == NULL) {
124 /* Install default entries */
125 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
128 if (dane_mds[i].nid == NID_undef ||
129 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
131 mdevp[dane_mds[i].mtype] = md;
132 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
142 static void dane_ctx_final(struct dane_ctx_st *dctx)
144 OPENSSL_free(dctx->mdevp);
147 OPENSSL_free(dctx->mdord);
152 static void tlsa_free(danetls_record *t)
156 OPENSSL_free(t->data);
157 EVP_PKEY_free(t->spki);
161 static void dane_final(SSL_DANE *dane)
163 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
166 OSSL_STACK_OF_X509_free(dane->certs);
169 X509_free(dane->mcert);
177 * dane_copy - Copy dane configuration, sans verification state.
179 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
184 if (!DANETLS_ENABLED(&from->dane))
187 num = sk_danetls_record_num(from->dane.trecs);
188 dane_final(&to->dane);
189 to->dane.flags = from->dane.flags;
190 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
191 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
193 if (to->dane.trecs == NULL) {
194 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
198 for (i = 0; i < num; ++i) {
199 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
201 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
202 t->selector, t->mtype, t->data, t->dlen) <= 0)
208 static int dane_mtype_set(struct dane_ctx_st *dctx,
209 const EVP_MD *md, uint8_t mtype, uint8_t ord)
213 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
214 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
218 if (mtype > dctx->mdmax) {
219 const EVP_MD **mdevp;
221 int n = ((int)mtype) + 1;
223 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
228 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
233 /* Zero-fill any gaps */
234 for (i = dctx->mdmax + 1; i < mtype; ++i) {
242 dctx->mdevp[mtype] = md;
243 /* Coerce ordinal of disabled matching types to 0 */
244 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
249 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
251 if (mtype > dane->dctx->mdmax)
253 return dane->dctx->mdevp[mtype];
256 static int dane_tlsa_add(SSL_DANE *dane,
259 uint8_t mtype, const unsigned char *data, size_t dlen)
262 const EVP_MD *md = NULL;
263 int ilen = (int)dlen;
267 if (dane->trecs == NULL) {
268 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
272 if (ilen < 0 || dlen != (size_t)ilen) {
273 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
277 if (usage > DANETLS_USAGE_LAST) {
278 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
282 if (selector > DANETLS_SELECTOR_LAST) {
283 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
287 if (mtype != DANETLS_MATCHING_FULL) {
288 md = tlsa_md_get(dane, mtype);
290 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
295 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
296 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
300 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
304 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
308 t->selector = selector;
310 t->data = OPENSSL_malloc(dlen);
311 if (t->data == NULL) {
315 memcpy(t->data, data, dlen);
318 /* Validate and cache full certificate or public key */
319 if (mtype == DANETLS_MATCHING_FULL) {
320 const unsigned char *p = data;
322 EVP_PKEY *pkey = NULL;
325 case DANETLS_SELECTOR_CERT:
326 if (!d2i_X509(&cert, &p, ilen) || p < data ||
327 dlen != (size_t)(p - data)) {
329 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
332 if (X509_get0_pubkey(cert) == NULL) {
334 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
338 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
344 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
345 * records that contain full certificates of trust-anchors that are
346 * not present in the wire chain. For usage PKIX-TA(0), we augment
347 * the chain with untrusted Full(0) certificates from DNS, in case
348 * they are missing from the chain.
350 if ((dane->certs == NULL &&
351 (dane->certs = sk_X509_new_null()) == NULL) ||
352 !sk_X509_push(dane->certs, cert)) {
353 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
360 case DANETLS_SELECTOR_SPKI:
361 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
362 dlen != (size_t)(p - data)) {
364 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
369 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
370 * records that contain full bare keys of trust-anchors that are
371 * not present in the wire chain.
373 if (usage == DANETLS_USAGE_DANE_TA)
382 * Find the right insertion point for the new record.
384 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
385 * they can be processed first, as they require no chain building, and no
386 * expiration or hostname checks. Because DANE-EE(3) is numerically
387 * largest, this is accomplished via descending sort by "usage".
389 * We also sort in descending order by matching ordinal to simplify
390 * the implementation of digest agility in the verification code.
392 * The choice of order for the selector is not significant, so we
393 * use the same descending order for consistency.
395 num = sk_danetls_record_num(dane->trecs);
396 for (i = 0; i < num; ++i) {
397 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
399 if (rec->usage > usage)
401 if (rec->usage < usage)
403 if (rec->selector > selector)
405 if (rec->selector < selector)
407 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
412 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
414 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
417 dane->umask |= DANETLS_USAGE_BIT(usage);
423 * Return 0 if there is only one version configured and it was disabled
424 * at configure time. Return 1 otherwise.
426 static int ssl_check_allowed_versions(int min_version, int max_version)
428 int minisdtls = 0, maxisdtls = 0;
430 /* Figure out if we're doing DTLS versions or TLS versions */
431 if (min_version == DTLS1_BAD_VER
432 || min_version >> 8 == DTLS1_VERSION_MAJOR)
434 if (max_version == DTLS1_BAD_VER
435 || max_version >> 8 == DTLS1_VERSION_MAJOR)
437 /* A wildcard version of 0 could be DTLS or TLS. */
438 if ((minisdtls && !maxisdtls && max_version != 0)
439 || (maxisdtls && !minisdtls && min_version != 0)) {
440 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
444 if (minisdtls || maxisdtls) {
445 /* Do DTLS version checks. */
446 if (min_version == 0)
447 /* Ignore DTLS1_BAD_VER */
448 min_version = DTLS1_VERSION;
449 if (max_version == 0)
450 max_version = DTLS1_2_VERSION;
451 #ifdef OPENSSL_NO_DTLS1_2
452 if (max_version == DTLS1_2_VERSION)
453 max_version = DTLS1_VERSION;
455 #ifdef OPENSSL_NO_DTLS1
456 if (min_version == DTLS1_VERSION)
457 min_version = DTLS1_2_VERSION;
459 /* Done massaging versions; do the check. */
461 #ifdef OPENSSL_NO_DTLS1
462 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
463 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
465 #ifdef OPENSSL_NO_DTLS1_2
466 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
467 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
472 /* Regular TLS version checks. */
473 if (min_version == 0)
474 min_version = SSL3_VERSION;
475 if (max_version == 0)
476 max_version = TLS1_3_VERSION;
477 #ifdef OPENSSL_NO_TLS1_3
478 if (max_version == TLS1_3_VERSION)
479 max_version = TLS1_2_VERSION;
481 #ifdef OPENSSL_NO_TLS1_2
482 if (max_version == TLS1_2_VERSION)
483 max_version = TLS1_1_VERSION;
485 #ifdef OPENSSL_NO_TLS1_1
486 if (max_version == TLS1_1_VERSION)
487 max_version = TLS1_VERSION;
489 #ifdef OPENSSL_NO_TLS1
490 if (max_version == TLS1_VERSION)
491 max_version = SSL3_VERSION;
493 #ifdef OPENSSL_NO_SSL3
494 if (min_version == SSL3_VERSION)
495 min_version = TLS1_VERSION;
497 #ifdef OPENSSL_NO_TLS1
498 if (min_version == TLS1_VERSION)
499 min_version = TLS1_1_VERSION;
501 #ifdef OPENSSL_NO_TLS1_1
502 if (min_version == TLS1_1_VERSION)
503 min_version = TLS1_2_VERSION;
505 #ifdef OPENSSL_NO_TLS1_2
506 if (min_version == TLS1_2_VERSION)
507 min_version = TLS1_3_VERSION;
509 /* Done massaging versions; do the check. */
511 #ifdef OPENSSL_NO_SSL3
512 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
514 #ifdef OPENSSL_NO_TLS1
515 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
517 #ifdef OPENSSL_NO_TLS1_1
518 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
520 #ifdef OPENSSL_NO_TLS1_2
521 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
523 #ifdef OPENSSL_NO_TLS1_3
524 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
532 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
534 * Define a VPROC function for HP NonStop build ssl library.
535 * This is used by platform version identification tools.
536 * Do not inline this procedure or make it static.
538 # define OPENSSL_VPROC_STRING_(x) x##_SSL
539 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
540 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
541 void OPENSSL_VPROC_FUNC(void) {}
545 static void clear_ciphers(SSL_CONNECTION *s)
547 /* clear the current cipher */
548 ssl_clear_cipher_ctx(s);
549 ssl_clear_hash_ctx(&s->read_hash);
550 ssl_clear_hash_ctx(&s->write_hash);
553 int SSL_clear(SSL *s)
555 if (s->method == NULL) {
556 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
560 return s->method->ssl_reset(s);
563 int ossl_ssl_connection_reset(SSL *s)
565 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
570 if (ssl_clear_bad_session(sc)) {
571 SSL_SESSION_free(sc->session);
574 SSL_SESSION_free(sc->psksession);
575 sc->psksession = NULL;
576 OPENSSL_free(sc->psksession_id);
577 sc->psksession_id = NULL;
578 sc->psksession_id_len = 0;
579 sc->hello_retry_request = 0;
580 sc->sent_tickets = 0;
586 if (sc->renegotiate) {
587 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
591 ossl_statem_clear(sc);
593 /* TODO(QUIC): Version handling not yet clear */
594 sc->version = s->method->version;
595 sc->client_version = sc->version;
596 sc->rwstate = SSL_NOTHING;
598 BUF_MEM_free(sc->init_buf);
601 sc->first_packet = 0;
603 sc->key_update = SSL_KEY_UPDATE_NONE;
604 memset(sc->ext.compress_certificate_from_peer, 0,
605 sizeof(sc->ext.compress_certificate_from_peer));
606 sc->ext.compress_certificate_sent = 0;
608 EVP_MD_CTX_free(sc->pha_dgst);
611 /* Reset DANE verification result state */
614 X509_free(sc->dane.mcert);
615 sc->dane.mcert = NULL;
616 sc->dane.mtlsa = NULL;
618 /* Clear the verification result peername */
619 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
621 /* Clear any shared connection state */
622 OPENSSL_free(sc->shared_sigalgs);
623 sc->shared_sigalgs = NULL;
624 sc->shared_sigalgslen = 0;
627 * Check to see if we were changed into a different method, if so, revert
630 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
631 s->method->ssl_deinit(s);
632 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
633 if (!s->method->ssl_init(s))
636 if (!s->method->ssl_clear(s))
640 RECORD_LAYER_clear(&sc->rlayer);
641 BIO_free(sc->rlayer.rrlnext);
642 sc->rlayer.rrlnext = NULL;
644 if (!ssl_set_new_record_layer(sc,
645 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
646 OSSL_RECORD_DIRECTION_READ,
647 OSSL_RECORD_PROTECTION_LEVEL_NONE,
648 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
649 NID_undef, NULL, NULL)) {
650 /* SSLfatal already called */
653 if (!ssl_set_new_record_layer(sc,
654 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
655 OSSL_RECORD_DIRECTION_WRITE,
656 OSSL_RECORD_PROTECTION_LEVEL_NONE,
657 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
658 NID_undef, NULL, NULL)) {
659 /* SSLfatal already called */
666 #ifndef OPENSSL_NO_DEPRECATED_3_0
667 /** Used to change an SSL_CTXs default SSL method type */
668 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
670 STACK_OF(SSL_CIPHER) *sk;
674 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
675 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
678 sk = ssl_create_cipher_list(ctx,
679 ctx->tls13_ciphersuites,
681 &(ctx->cipher_list_by_id),
682 OSSL_default_cipher_list(), ctx->cert);
683 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
684 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
691 SSL *SSL_new(SSL_CTX *ctx)
694 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
697 if (ctx->method == NULL) {
698 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
701 return ctx->method->ssl_new(ctx);
704 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
709 ssl->lock = CRYPTO_THREAD_lock_new();
710 if (ssl->lock == NULL)
716 ssl->method = ctx->method;
718 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
724 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
729 s = OPENSSL_zalloc(sizeof(*s));
734 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
740 #ifndef OPENSSL_NO_QUIC
741 /* set the parent (user visible) ssl to self */
745 RECORD_LAYER_init(&s->rlayer, s);
747 s->options = ctx->options;
748 s->dane.flags = ctx->dane.flags;
749 s->min_proto_version = ctx->min_proto_version;
750 s->max_proto_version = ctx->max_proto_version;
752 s->max_cert_list = ctx->max_cert_list;
753 s->max_early_data = ctx->max_early_data;
754 s->recv_max_early_data = ctx->recv_max_early_data;
755 s->num_tickets = ctx->num_tickets;
756 s->pha_enabled = ctx->pha_enabled;
758 /* Shallow copy of the ciphersuites stack */
759 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
760 if (s->tls13_ciphersuites == NULL)
764 * Earlier library versions used to copy the pointer to the CERT, not
765 * its contents; only when setting new parameters for the per-SSL
766 * copy, ssl_cert_new would be called (and the direct reference to
767 * the per-SSL_CTX settings would be lost, but those still were
768 * indirectly accessed for various purposes, and for that reason they
769 * used to be known as s->ctx->default_cert). Now we don't look at the
770 * SSL_CTX's CERT after having duplicated it once.
772 s->cert = ssl_cert_dup(ctx->cert);
776 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
777 s->msg_callback = ctx->msg_callback;
778 s->msg_callback_arg = ctx->msg_callback_arg;
779 s->verify_mode = ctx->verify_mode;
780 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
781 s->rlayer.record_padding_cb = ctx->record_padding_cb;
782 s->rlayer.record_padding_arg = ctx->record_padding_arg;
783 s->rlayer.block_padding = ctx->block_padding;
784 s->sid_ctx_length = ctx->sid_ctx_length;
785 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
787 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
788 s->verify_callback = ctx->default_verify_callback;
789 s->generate_session_id = ctx->generate_session_id;
791 s->param = X509_VERIFY_PARAM_new();
792 if (s->param == NULL)
794 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
795 s->quiet_shutdown = ctx->quiet_shutdown;
797 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
798 s->max_send_fragment = ctx->max_send_fragment;
799 s->split_send_fragment = ctx->split_send_fragment;
800 s->max_pipelines = ctx->max_pipelines;
801 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
804 s->ext.debug_arg = NULL;
805 s->ext.ticket_expected = 0;
806 s->ext.status_type = ctx->ext.status_type;
807 s->ext.status_expected = 0;
808 s->ext.ocsp.ids = NULL;
809 s->ext.ocsp.exts = NULL;
810 s->ext.ocsp.resp = NULL;
811 s->ext.ocsp.resp_len = 0;
813 s->session_ctx = ctx;
814 if (ctx->ext.ecpointformats) {
815 s->ext.ecpointformats =
816 OPENSSL_memdup(ctx->ext.ecpointformats,
817 ctx->ext.ecpointformats_len);
818 if (!s->ext.ecpointformats) {
819 s->ext.ecpointformats_len = 0;
822 s->ext.ecpointformats_len =
823 ctx->ext.ecpointformats_len;
825 if (ctx->ext.supportedgroups) {
826 s->ext.supportedgroups =
827 OPENSSL_memdup(ctx->ext.supportedgroups,
828 ctx->ext.supportedgroups_len
829 * sizeof(*ctx->ext.supportedgroups));
830 if (!s->ext.supportedgroups) {
831 s->ext.supportedgroups_len = 0;
834 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
837 #ifndef OPENSSL_NO_NEXTPROTONEG
841 if (ctx->ext.alpn != NULL) {
842 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
843 if (s->ext.alpn == NULL) {
847 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
848 s->ext.alpn_len = ctx->ext.alpn_len;
851 s->verified_chain = NULL;
852 s->verify_result = X509_V_OK;
854 s->default_passwd_callback = ctx->default_passwd_callback;
855 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
857 s->key_update = SSL_KEY_UPDATE_NONE;
859 s->allow_early_data_cb = ctx->allow_early_data_cb;
860 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
862 if (!ssl->method->ssl_init(ssl))
865 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
870 #ifndef OPENSSL_NO_PSK
871 s->psk_client_callback = ctx->psk_client_callback;
872 s->psk_server_callback = ctx->psk_server_callback;
874 s->psk_find_session_cb = ctx->psk_find_session_cb;
875 s->psk_use_session_cb = ctx->psk_use_session_cb;
877 s->async_cb = ctx->async_cb;
878 s->async_cb_arg = ctx->async_cb_arg;
882 #ifndef OPENSSL_NO_COMP_ALG
883 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
886 #ifndef OPENSSL_NO_CT
887 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
888 ctx->ct_validation_callback_arg))
894 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
897 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
900 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
906 int SSL_is_dtls(const SSL *s)
908 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
913 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
916 int SSL_up_ref(SSL *s)
920 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
923 REF_PRINT_COUNT("SSL", s);
924 REF_ASSERT_ISNT(i < 2);
925 return ((i > 1) ? 1 : 0);
928 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
929 unsigned int sid_ctx_len)
931 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
932 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
935 ctx->sid_ctx_length = sid_ctx_len;
936 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
941 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
942 unsigned int sid_ctx_len)
944 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
949 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
950 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
953 sc->sid_ctx_length = sid_ctx_len;
954 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
959 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
961 if (!CRYPTO_THREAD_write_lock(ctx->lock))
963 ctx->generate_session_id = cb;
964 CRYPTO_THREAD_unlock(ctx->lock);
968 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
970 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
972 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
974 sc->generate_session_id = cb;
975 CRYPTO_THREAD_unlock(ssl->lock);
979 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
983 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
984 * we can "construct" a session to give us the desired check - i.e. to
985 * find if there's a session in the hash table that would conflict with
986 * any new session built out of this id/id_len and the ssl_version in use
990 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
992 if (sc == NULL || id_len > sizeof(r.session_id))
995 r.ssl_version = sc->version;
996 r.session_id_length = id_len;
997 memcpy(r.session_id, id, id_len);
999 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1001 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1002 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1006 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1008 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1011 int SSL_set_purpose(SSL *s, int purpose)
1013 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1018 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1021 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1023 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1026 int SSL_set_trust(SSL *s, int trust)
1028 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1033 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1036 int SSL_set1_host(SSL *s, const char *hostname)
1038 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1043 /* If a hostname is provided and parses as an IP address,
1044 * treat it as such. */
1045 if (hostname != NULL
1046 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1049 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1052 int SSL_add1_host(SSL *s, const char *hostname)
1054 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1059 /* If a hostname is provided and parses as an IP address,
1060 * treat it as such. */
1063 ASN1_OCTET_STRING *ip;
1066 ip = a2i_IPADDRESS(hostname);
1068 /* We didn't want it; only to check if it *is* an IP address */
1069 ASN1_OCTET_STRING_free(ip);
1071 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1074 OPENSSL_free(old_ip);
1075 /* There can be only one IP address */
1079 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1083 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1086 void SSL_set_hostflags(SSL *s, unsigned int flags)
1088 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1093 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1096 const char *SSL_get0_peername(SSL *s)
1098 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1103 return X509_VERIFY_PARAM_get0_peername(sc->param);
1106 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1108 return dane_ctx_enable(&ctx->dane);
1111 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1113 unsigned long orig = ctx->dane.flags;
1115 ctx->dane.flags |= flags;
1119 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1121 unsigned long orig = ctx->dane.flags;
1123 ctx->dane.flags &= ~flags;
1127 int SSL_dane_enable(SSL *s, const char *basedomain)
1130 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1136 if (s->ctx->dane.mdmax == 0) {
1137 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1140 if (dane->trecs != NULL) {
1141 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1146 * Default SNI name. This rejects empty names, while set1_host below
1147 * accepts them and disables hostname checks. To avoid side-effects with
1148 * invalid input, set the SNI name first.
1150 if (sc->ext.hostname == NULL) {
1151 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1152 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1157 /* Primary RFC6125 reference identifier */
1158 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1159 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1165 dane->dctx = &s->ctx->dane;
1166 dane->trecs = sk_danetls_record_new_null();
1168 if (dane->trecs == NULL) {
1169 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1175 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1178 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1183 orig = sc->dane.flags;
1185 sc->dane.flags |= flags;
1189 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1192 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1197 orig = sc->dane.flags;
1199 sc->dane.flags &= ~flags;
1203 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1206 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1213 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1217 *mcert = dane->mcert;
1219 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1224 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1225 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1228 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1235 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1239 *usage = dane->mtlsa->usage;
1241 *selector = dane->mtlsa->selector;
1243 *mtype = dane->mtlsa->mtype;
1245 *data = dane->mtlsa->data;
1247 *dlen = dane->mtlsa->dlen;
1252 SSL_DANE *SSL_get0_dane(SSL *s)
1254 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1262 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1263 uint8_t mtype, const unsigned char *data, size_t dlen)
1265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1270 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1273 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1276 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1279 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1281 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1284 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1286 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1291 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1294 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1299 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1301 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1309 void SSL_certs_clear(SSL *s)
1311 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1316 ssl_cert_clear_certs(sc->cert);
1319 void SSL_free(SSL *s)
1325 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1326 REF_PRINT_COUNT("SSL", s);
1329 REF_ASSERT_ISNT(i < 0);
1331 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1333 if (s->method != NULL)
1334 s->method->ssl_free(s);
1336 SSL_CTX_free(s->ctx);
1337 CRYPTO_THREAD_lock_free(s->lock);
1342 void ossl_ssl_connection_free(SSL *ssl)
1346 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1350 X509_VERIFY_PARAM_free(s->param);
1351 dane_final(&s->dane);
1353 /* Ignore return value */
1354 ssl_free_wbio_buffer(s);
1356 RECORD_LAYER_clear(&s->rlayer);
1358 BUF_MEM_free(s->init_buf);
1360 /* add extra stuff */
1361 sk_SSL_CIPHER_free(s->cipher_list);
1362 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1363 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1364 sk_SSL_CIPHER_free(s->peer_ciphers);
1366 /* Make the next call work :-) */
1367 if (s->session != NULL) {
1368 ssl_clear_bad_session(s);
1369 SSL_SESSION_free(s->session);
1371 SSL_SESSION_free(s->psksession);
1372 OPENSSL_free(s->psksession_id);
1376 ssl_cert_free(s->cert);
1377 OPENSSL_free(s->shared_sigalgs);
1378 /* Free up if allocated */
1380 OPENSSL_free(s->ext.hostname);
1381 SSL_CTX_free(s->session_ctx);
1382 OPENSSL_free(s->ext.ecpointformats);
1383 OPENSSL_free(s->ext.peer_ecpointformats);
1384 OPENSSL_free(s->ext.supportedgroups);
1385 OPENSSL_free(s->ext.peer_supportedgroups);
1386 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1387 #ifndef OPENSSL_NO_OCSP
1388 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1390 #ifndef OPENSSL_NO_CT
1391 SCT_LIST_free(s->scts);
1392 OPENSSL_free(s->ext.scts);
1394 OPENSSL_free(s->ext.ocsp.resp);
1395 OPENSSL_free(s->ext.alpn);
1396 OPENSSL_free(s->ext.tls13_cookie);
1397 if (s->clienthello != NULL)
1398 OPENSSL_free(s->clienthello->pre_proc_exts);
1399 OPENSSL_free(s->clienthello);
1400 OPENSSL_free(s->pha_context);
1401 EVP_MD_CTX_free(s->pha_dgst);
1403 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1404 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1406 OSSL_STACK_OF_X509_free(s->verified_chain);
1408 if (ssl->method != NULL)
1409 ssl->method->ssl_deinit(ssl);
1411 ASYNC_WAIT_CTX_free(s->waitctx);
1413 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1414 OPENSSL_free(s->ext.npn);
1417 #ifndef OPENSSL_NO_SRTP
1418 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1422 * We do this late. We want to ensure that any other references we held to
1423 * these BIOs are freed first *before* we call BIO_free_all(), because
1424 * BIO_free_all() will only free each BIO in the chain if the number of
1425 * references to the first BIO have dropped to 0
1427 BIO_free_all(s->wbio);
1429 BIO_free_all(s->rbio);
1433 void SSL_set0_rbio(SSL *s, BIO *rbio)
1435 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1440 BIO_free_all(sc->rbio);
1442 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1445 void SSL_set0_wbio(SSL *s, BIO *wbio)
1447 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1453 * If the output buffering BIO is still in place, remove it
1455 if (sc->bbio != NULL)
1456 sc->wbio = BIO_pop(sc->wbio);
1458 BIO_free_all(sc->wbio);
1461 /* Re-attach |bbio| to the new |wbio|. */
1462 if (sc->bbio != NULL)
1463 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1465 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1468 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1471 * For historical reasons, this function has many different cases in
1472 * ownership handling.
1475 /* If nothing has changed, do nothing */
1476 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1480 * If the two arguments are equal then one fewer reference is granted by the
1481 * caller than we want to take
1483 if (rbio != NULL && rbio == wbio)
1487 * If only the wbio is changed only adopt one reference.
1489 if (rbio == SSL_get_rbio(s)) {
1490 SSL_set0_wbio(s, wbio);
1494 * There is an asymmetry here for historical reasons. If only the rbio is
1495 * changed AND the rbio and wbio were originally different, then we only
1496 * adopt one reference.
1498 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1499 SSL_set0_rbio(s, rbio);
1503 /* Otherwise, adopt both references. */
1504 SSL_set0_rbio(s, rbio);
1505 SSL_set0_wbio(s, wbio);
1508 BIO *SSL_get_rbio(const SSL *s)
1510 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1518 BIO *SSL_get_wbio(const SSL *s)
1520 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1525 if (sc->bbio != NULL) {
1527 * If |bbio| is active, the true caller-configured BIO is its
1530 return BIO_next(sc->bbio);
1535 int SSL_get_fd(const SSL *s)
1537 return SSL_get_rfd(s);
1540 int SSL_get_rfd(const SSL *s)
1545 b = SSL_get_rbio(s);
1546 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1548 BIO_get_fd(r, &ret);
1552 int SSL_get_wfd(const SSL *s)
1557 b = SSL_get_wbio(s);
1558 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1560 BIO_get_fd(r, &ret);
1564 #ifndef OPENSSL_NO_SOCK
1565 int SSL_set_fd(SSL *s, int fd)
1570 bio = BIO_new(BIO_s_socket());
1573 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1576 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1577 SSL_set_bio(s, bio, bio);
1578 #ifndef OPENSSL_NO_KTLS
1580 * The new socket is created successfully regardless of ktls_enable.
1581 * ktls_enable doesn't change any functionality of the socket, except
1582 * changing the setsockopt to enable the processing of ktls_start.
1583 * Thus, it is not a problem to call it for non-TLS sockets.
1586 #endif /* OPENSSL_NO_KTLS */
1592 int SSL_set_wfd(SSL *s, int fd)
1594 BIO *rbio = SSL_get_rbio(s);
1596 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1597 || (int)BIO_get_fd(rbio, NULL) != fd) {
1598 BIO *bio = BIO_new(BIO_s_socket());
1601 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1604 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1605 SSL_set0_wbio(s, bio);
1606 #ifndef OPENSSL_NO_KTLS
1608 * The new socket is created successfully regardless of ktls_enable.
1609 * ktls_enable doesn't change any functionality of the socket, except
1610 * changing the setsockopt to enable the processing of ktls_start.
1611 * Thus, it is not a problem to call it for non-TLS sockets.
1614 #endif /* OPENSSL_NO_KTLS */
1617 SSL_set0_wbio(s, rbio);
1622 int SSL_set_rfd(SSL *s, int fd)
1624 BIO *wbio = SSL_get_wbio(s);
1626 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1627 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1628 BIO *bio = BIO_new(BIO_s_socket());
1631 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1634 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1635 SSL_set0_rbio(s, bio);
1638 SSL_set0_rbio(s, wbio);
1645 /* return length of latest Finished message we sent, copy to 'buf' */
1646 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1649 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1654 ret = sc->s3.tmp.finish_md_len;
1657 memcpy(buf, sc->s3.tmp.finish_md, count);
1661 /* return length of latest Finished message we expected, copy to 'buf' */
1662 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1665 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1670 ret = sc->s3.tmp.peer_finish_md_len;
1673 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1677 int SSL_get_verify_mode(const SSL *s)
1679 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1684 return sc->verify_mode;
1687 int SSL_get_verify_depth(const SSL *s)
1689 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1694 return X509_VERIFY_PARAM_get_depth(sc->param);
1697 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1698 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1703 return sc->verify_callback;
1706 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1708 return ctx->verify_mode;
1711 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1713 return X509_VERIFY_PARAM_get_depth(ctx->param);
1716 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1717 return ctx->default_verify_callback;
1720 void SSL_set_verify(SSL *s, int mode,
1721 int (*callback) (int ok, X509_STORE_CTX *ctx))
1723 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1728 sc->verify_mode = mode;
1729 if (callback != NULL)
1730 sc->verify_callback = callback;
1733 void SSL_set_verify_depth(SSL *s, int depth)
1735 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1740 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1743 void SSL_set_read_ahead(SSL *s, int yes)
1745 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1746 OSSL_PARAM options[2], *opts = options;
1751 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1753 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1754 &sc->rlayer.read_ahead);
1755 *opts = OSSL_PARAM_construct_end();
1757 /* Ignore return value */
1758 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1761 int SSL_get_read_ahead(const SSL *s)
1763 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1768 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1771 int SSL_pending(const SSL *s)
1773 size_t pending = s->method->ssl_pending(s);
1776 * SSL_pending cannot work properly if read-ahead is enabled
1777 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1778 * impossible to fix since SSL_pending cannot report errors that may be
1779 * observed while scanning the new data. (Note that SSL_pending() is
1780 * often used as a boolean value, so we'd better not return -1.)
1782 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1783 * we just return INT_MAX.
1785 return pending < INT_MAX ? (int)pending : INT_MAX;
1788 int SSL_has_pending(const SSL *s)
1791 * Similar to SSL_pending() but returns a 1 to indicate that we have
1792 * processed or unprocessed data available or 0 otherwise (as opposed to the
1793 * number of bytes available). Unlike SSL_pending() this will take into
1794 * account read_ahead data. A 1 return simply indicates that we have data.
1795 * That data may not result in any application data, or we may fail to parse
1796 * the records for some reason.
1798 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1800 /* Check buffered app data if any first */
1801 if (SSL_CONNECTION_IS_DTLS(sc)) {
1805 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1806 while ((item = pqueue_next(&iter)) != NULL) {
1808 if (rdata->length > 0)
1813 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1816 return RECORD_LAYER_read_pending(&sc->rlayer);
1819 X509 *SSL_get1_peer_certificate(const SSL *s)
1821 X509 *r = SSL_get0_peer_certificate(s);
1829 X509 *SSL_get0_peer_certificate(const SSL *s)
1831 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1836 if (sc->session == NULL)
1839 return sc->session->peer;
1842 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1845 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1850 if (sc->session == NULL)
1853 r = sc->session->peer_chain;
1856 * If we are a client, cert_chain includes the peer's own certificate; if
1857 * we are a server, it does not.
1864 * Now in theory, since the calling process own 't' it should be safe to
1865 * modify. We need to be able to read f without being hassled
1867 int SSL_copy_session_id(SSL *t, const SSL *f)
1870 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1871 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1872 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1874 if (tsc == NULL || fsc == NULL)
1877 /* Do we need to do SSL locking? */
1878 if (!SSL_set_session(t, SSL_get_session(f))) {
1883 * what if we are setup for one protocol version but want to talk another
1885 if (t->method != f->method) {
1886 t->method->ssl_deinit(t);
1887 t->method = f->method;
1888 if (t->method->ssl_init(t) == 0)
1892 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1893 ssl_cert_free(tsc->cert);
1894 tsc->cert = fsc->cert;
1895 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1902 /* Fix this so it checks all the valid key/cert options */
1903 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1905 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1906 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1909 if (ctx->cert->key->privatekey == NULL) {
1910 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1913 return X509_check_private_key
1914 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1917 /* Fix this function so that it takes an optional type parameter */
1918 int SSL_check_private_key(const SSL *ssl)
1920 const SSL_CONNECTION *sc;
1922 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1923 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1926 if (sc->cert->key->x509 == NULL) {
1927 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1930 if (sc->cert->key->privatekey == NULL) {
1931 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1934 return X509_check_private_key(sc->cert->key->x509,
1935 sc->cert->key->privatekey);
1938 int SSL_waiting_for_async(SSL *s)
1940 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1951 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1953 ASYNC_WAIT_CTX *ctx;
1954 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1959 if ((ctx = sc->waitctx) == NULL)
1961 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1964 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1965 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1967 ASYNC_WAIT_CTX *ctx;
1968 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1973 if ((ctx = sc->waitctx) == NULL)
1975 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1979 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1981 ctx->async_cb = callback;
1985 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1987 ctx->async_cb_arg = arg;
1991 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1993 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1998 sc->async_cb = callback;
2002 int SSL_set_async_callback_arg(SSL *s, void *arg)
2004 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2009 sc->async_cb_arg = arg;
2013 int SSL_get_async_status(SSL *s, int *status)
2015 ASYNC_WAIT_CTX *ctx;
2016 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2021 if ((ctx = sc->waitctx) == NULL)
2023 *status = ASYNC_WAIT_CTX_get_status(ctx);
2027 int SSL_accept(SSL *s)
2029 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2034 if (sc->handshake_func == NULL) {
2035 /* Not properly initialized yet */
2036 SSL_set_accept_state(s);
2039 return SSL_do_handshake(s);
2042 int SSL_connect(SSL *s)
2044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2049 if (sc->handshake_func == NULL) {
2050 /* Not properly initialized yet */
2051 SSL_set_connect_state(s);
2054 return SSL_do_handshake(s);
2057 long SSL_get_default_timeout(const SSL *s)
2059 return (long int)ossl_time2seconds(s->method->get_timeout());
2062 static int ssl_async_wait_ctx_cb(void *arg)
2064 SSL *s = (SSL *)arg;
2065 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2070 return sc->async_cb(s, sc->async_cb_arg);
2073 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2074 int (*func) (void *))
2077 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2082 if (sc->waitctx == NULL) {
2083 sc->waitctx = ASYNC_WAIT_CTX_new();
2084 if (sc->waitctx == NULL)
2086 if (sc->async_cb != NULL
2087 && !ASYNC_WAIT_CTX_set_callback
2088 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2092 sc->rwstate = SSL_NOTHING;
2093 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2094 sizeof(struct ssl_async_args))) {
2096 sc->rwstate = SSL_NOTHING;
2097 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2100 sc->rwstate = SSL_ASYNC_PAUSED;
2103 sc->rwstate = SSL_ASYNC_NO_JOBS;
2109 sc->rwstate = SSL_NOTHING;
2110 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2111 /* Shouldn't happen */
2116 static int ssl_io_intern(void *vargs)
2118 struct ssl_async_args *args;
2124 args = (struct ssl_async_args *)vargs;
2128 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2131 switch (args->type) {
2133 return args->f.func_read(s, buf, num, &sc->asyncrw);
2135 return args->f.func_write(s, buf, num, &sc->asyncrw);
2137 return args->f.func_other(s);
2142 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2144 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2149 if (sc->handshake_func == NULL) {
2150 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2154 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2155 sc->rwstate = SSL_NOTHING;
2159 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2160 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2161 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2165 * If we are a client and haven't received the ServerHello etc then we
2168 ossl_statem_check_finish_init(sc, 0);
2170 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2171 struct ssl_async_args args;
2177 args.type = READFUNC;
2178 args.f.func_read = s->method->ssl_read;
2180 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2181 *readbytes = sc->asyncrw;
2184 return s->method->ssl_read(s, buf, num, readbytes);
2188 int SSL_read(SSL *s, void *buf, int num)
2194 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2198 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2201 * The cast is safe here because ret should be <= INT_MAX because num is
2205 ret = (int)readbytes;
2210 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2212 int ret = ssl_read_internal(s, buf, num, readbytes);
2219 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2222 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2224 /* TODO(QUIC): This will need special handling for QUIC */
2229 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2230 return SSL_READ_EARLY_DATA_ERROR;
2233 switch (sc->early_data_state) {
2234 case SSL_EARLY_DATA_NONE:
2235 if (!SSL_in_before(s)) {
2236 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2237 return SSL_READ_EARLY_DATA_ERROR;
2241 case SSL_EARLY_DATA_ACCEPT_RETRY:
2242 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2243 ret = SSL_accept(s);
2246 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2247 return SSL_READ_EARLY_DATA_ERROR;
2251 case SSL_EARLY_DATA_READ_RETRY:
2252 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2253 sc->early_data_state = SSL_EARLY_DATA_READING;
2254 ret = SSL_read_ex(s, buf, num, readbytes);
2256 * State machine will update early_data_state to
2257 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2260 if (ret > 0 || (ret <= 0 && sc->early_data_state
2261 != SSL_EARLY_DATA_FINISHED_READING)) {
2262 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2263 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2264 : SSL_READ_EARLY_DATA_ERROR;
2267 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2270 return SSL_READ_EARLY_DATA_FINISH;
2273 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2274 return SSL_READ_EARLY_DATA_ERROR;
2278 int SSL_get_early_data_status(const SSL *s)
2280 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2282 /* TODO(QUIC): This will need special handling for QUIC */
2286 return sc->ext.early_data;
2289 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2291 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2296 if (sc->handshake_func == NULL) {
2297 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2301 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2304 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2305 struct ssl_async_args args;
2311 args.type = READFUNC;
2312 args.f.func_read = s->method->ssl_peek;
2314 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2315 *readbytes = sc->asyncrw;
2318 return s->method->ssl_peek(s, buf, num, readbytes);
2322 int SSL_peek(SSL *s, void *buf, int num)
2328 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2332 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2335 * The cast is safe here because ret should be <= INT_MAX because num is
2339 ret = (int)readbytes;
2345 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2347 int ret = ssl_peek_internal(s, buf, num, readbytes);
2354 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2356 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2361 if (sc->handshake_func == NULL) {
2362 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2366 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2367 sc->rwstate = SSL_NOTHING;
2368 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2372 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2373 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2374 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2375 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2378 /* If we are a client and haven't sent the Finished we better do that */
2379 ossl_statem_check_finish_init(sc, 1);
2381 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2383 struct ssl_async_args args;
2386 args.buf = (void *)buf;
2388 args.type = WRITEFUNC;
2389 args.f.func_write = s->method->ssl_write;
2391 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2392 *written = sc->asyncrw;
2395 return s->method->ssl_write(s, buf, num, written);
2399 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2402 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2407 if (sc->handshake_func == NULL) {
2408 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2412 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2413 sc->rwstate = SSL_NOTHING;
2414 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2418 if (!BIO_get_ktls_send(sc->wbio)) {
2419 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2423 /* If we have an alert to send, lets send it */
2424 if (sc->s3.alert_dispatch) {
2425 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2427 /* SSLfatal() already called if appropriate */
2430 /* if it went, fall through and send more stuff */
2433 sc->rwstate = SSL_WRITING;
2434 if (BIO_flush(sc->wbio) <= 0) {
2435 if (!BIO_should_retry(sc->wbio)) {
2436 sc->rwstate = SSL_NOTHING;
2439 set_sys_error(EAGAIN);
2445 #ifdef OPENSSL_NO_KTLS
2446 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2447 "can't call ktls_sendfile(), ktls disabled");
2450 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2452 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2453 if ((get_last_sys_error() == EAGAIN) ||
2454 (get_last_sys_error() == EINTR) ||
2455 (get_last_sys_error() == EBUSY))
2456 BIO_set_retry_write(sc->wbio);
2459 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2462 sc->rwstate = SSL_NOTHING;
2467 int SSL_write(SSL *s, const void *buf, int num)
2473 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2477 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2480 * The cast is safe here because ret should be <= INT_MAX because num is
2489 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2491 int ret = ssl_write_internal(s, buf, num, written);
2498 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2500 int ret, early_data_state;
2502 uint32_t partialwrite;
2503 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2505 /* TODO(QUIC): This will need special handling for QUIC */
2509 switch (sc->early_data_state) {
2510 case SSL_EARLY_DATA_NONE:
2512 || !SSL_in_before(s)
2513 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2514 && (sc->psk_use_session_cb == NULL))) {
2515 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2520 case SSL_EARLY_DATA_CONNECT_RETRY:
2521 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2522 ret = SSL_connect(s);
2525 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2530 case SSL_EARLY_DATA_WRITE_RETRY:
2531 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2533 * We disable partial write for early data because we don't keep track
2534 * of how many bytes we've written between the SSL_write_ex() call and
2535 * the flush if the flush needs to be retried)
2537 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2538 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2539 ret = SSL_write_ex(s, buf, num, &writtmp);
2540 sc->mode |= partialwrite;
2542 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2545 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2548 case SSL_EARLY_DATA_WRITE_FLUSH:
2549 /* The buffering BIO is still in place so we need to flush it */
2550 if (statem_flush(sc) != 1)
2553 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2556 case SSL_EARLY_DATA_FINISHED_READING:
2557 case SSL_EARLY_DATA_READ_RETRY:
2558 early_data_state = sc->early_data_state;
2559 /* We are a server writing to an unauthenticated client */
2560 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2561 ret = SSL_write_ex(s, buf, num, written);
2562 /* The buffering BIO is still in place */
2564 (void)BIO_flush(sc->wbio);
2565 sc->early_data_state = early_data_state;
2569 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2574 int SSL_shutdown(SSL *s)
2577 * Note that this function behaves differently from what one might
2578 * expect. Return values are 0 for no success (yet), 1 for success; but
2579 * calling it once is usually not enough, even if blocking I/O is used
2580 * (see ssl3_shutdown).
2582 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2587 if (sc->handshake_func == NULL) {
2588 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2592 if (!SSL_in_init(s)) {
2593 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2594 struct ssl_async_args args;
2596 memset(&args, 0, sizeof(args));
2598 args.type = OTHERFUNC;
2599 args.f.func_other = s->method->ssl_shutdown;
2601 return ssl_start_async_job(s, &args, ssl_io_intern);
2603 return s->method->ssl_shutdown(s);
2606 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2611 int SSL_key_update(SSL *s, int updatetype)
2613 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2618 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2619 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2623 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2624 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2625 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2629 if (!SSL_is_init_finished(s)) {
2630 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2634 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2635 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2639 ossl_statem_set_in_init(sc, 1);
2640 sc->key_update = updatetype;
2644 int SSL_get_key_update_type(const SSL *s)
2646 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2651 return sc->key_update;
2655 * Can we accept a renegotiation request? If yes, set the flag and
2656 * return 1 if yes. If not, raise error and return 0.
2658 static int can_renegotiate(const SSL_CONNECTION *sc)
2660 if (SSL_CONNECTION_IS_TLS13(sc)) {
2661 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2665 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2666 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2673 int SSL_renegotiate(SSL *s)
2675 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2680 if (!can_renegotiate(sc))
2683 sc->renegotiate = 1;
2684 sc->new_session = 1;
2685 return s->method->ssl_renegotiate(s);
2688 int SSL_renegotiate_abbreviated(SSL *s)
2690 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2695 if (!can_renegotiate(sc))
2698 sc->renegotiate = 1;
2699 sc->new_session = 0;
2700 return s->method->ssl_renegotiate(s);
2703 int SSL_renegotiate_pending(const SSL *s)
2705 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2711 * becomes true when negotiation is requested; false again once a
2712 * handshake has finished
2714 return (sc->renegotiate != 0);
2717 int SSL_new_session_ticket(SSL *s)
2719 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2724 /* If we are in init because we're sending tickets, okay to send more. */
2725 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2726 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2727 || !SSL_CONNECTION_IS_TLS13(sc))
2729 sc->ext.extra_tickets_expected++;
2730 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2731 ossl_statem_set_in_init(sc, 1);
2735 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2738 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2740 /* TODO(QUIC): Special handling for some ctrls will be needed */
2745 case SSL_CTRL_GET_READ_AHEAD:
2746 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2747 case SSL_CTRL_SET_READ_AHEAD:
2748 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2749 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2752 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2753 sc->msg_callback_arg = parg;
2758 OSSL_PARAM options[2], *opts = options;
2762 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2764 *opts = OSSL_PARAM_construct_end();
2766 /* Ignore return value */
2767 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2771 case SSL_CTRL_CLEAR_MODE:
2772 return (sc->mode &= ~larg);
2773 case SSL_CTRL_GET_MAX_CERT_LIST:
2774 return (long)sc->max_cert_list;
2775 case SSL_CTRL_SET_MAX_CERT_LIST:
2778 l = (long)sc->max_cert_list;
2779 sc->max_cert_list = (size_t)larg;
2781 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2782 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2784 #ifndef OPENSSL_NO_KTLS
2785 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2787 #endif /* OPENSSL_NO_KTLS */
2788 sc->max_send_fragment = larg;
2789 if (sc->max_send_fragment < sc->split_send_fragment)
2790 sc->split_send_fragment = sc->max_send_fragment;
2791 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2793 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2794 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2796 sc->split_send_fragment = larg;
2798 case SSL_CTRL_SET_MAX_PIPELINES:
2799 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2801 sc->max_pipelines = larg;
2802 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2803 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2805 case SSL_CTRL_GET_RI_SUPPORT:
2806 return sc->s3.send_connection_binding;
2807 case SSL_CTRL_SET_RETRY_VERIFY:
2808 sc->rwstate = SSL_RETRY_VERIFY;
2810 case SSL_CTRL_CERT_FLAGS:
2811 return (sc->cert->cert_flags |= larg);
2812 case SSL_CTRL_CLEAR_CERT_FLAGS:
2813 return (sc->cert->cert_flags &= ~larg);
2815 case SSL_CTRL_GET_RAW_CIPHERLIST:
2817 if (sc->s3.tmp.ciphers_raw == NULL)
2819 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2820 return (int)sc->s3.tmp.ciphers_rawlen;
2822 return TLS_CIPHER_LEN;
2824 case SSL_CTRL_GET_EXTMS_SUPPORT:
2825 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2827 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2831 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2832 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2833 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2834 &sc->min_proto_version);
2835 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2836 return sc->min_proto_version;
2837 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2838 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2839 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2840 &sc->max_proto_version);
2841 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2842 return sc->max_proto_version;
2844 return s->method->ssl_ctrl(s, cmd, larg, parg);
2848 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2850 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2856 case SSL_CTRL_SET_MSG_CALLBACK:
2857 sc->msg_callback = (void (*)
2858 (int write_p, int version, int content_type,
2859 const void *buf, size_t len, SSL *ssl,
2864 return s->method->ssl_callback_ctrl(s, cmd, fp);
2868 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2870 return ctx->sessions;
2873 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2877 if (ssl_tsan_lock(ctx)) {
2878 res = tsan_load(stat);
2879 ssl_tsan_unlock(ctx);
2884 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2887 /* For some cases with ctx == NULL perform syntax checks */
2890 case SSL_CTRL_SET_GROUPS_LIST:
2891 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2892 case SSL_CTRL_SET_SIGALGS_LIST:
2893 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2894 return tls1_set_sigalgs_list(NULL, parg, 0);
2901 case SSL_CTRL_GET_READ_AHEAD:
2902 return ctx->read_ahead;
2903 case SSL_CTRL_SET_READ_AHEAD:
2904 l = ctx->read_ahead;
2905 ctx->read_ahead = larg;
2908 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2909 ctx->msg_callback_arg = parg;
2912 case SSL_CTRL_GET_MAX_CERT_LIST:
2913 return (long)ctx->max_cert_list;
2914 case SSL_CTRL_SET_MAX_CERT_LIST:
2917 l = (long)ctx->max_cert_list;
2918 ctx->max_cert_list = (size_t)larg;
2921 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2924 l = (long)ctx->session_cache_size;
2925 ctx->session_cache_size = (size_t)larg;
2927 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2928 return (long)ctx->session_cache_size;
2929 case SSL_CTRL_SET_SESS_CACHE_MODE:
2930 l = ctx->session_cache_mode;
2931 ctx->session_cache_mode = larg;
2933 case SSL_CTRL_GET_SESS_CACHE_MODE:
2934 return ctx->session_cache_mode;
2936 case SSL_CTRL_SESS_NUMBER:
2937 return lh_SSL_SESSION_num_items(ctx->sessions);
2938 case SSL_CTRL_SESS_CONNECT:
2939 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2940 case SSL_CTRL_SESS_CONNECT_GOOD:
2941 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2942 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2943 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2944 case SSL_CTRL_SESS_ACCEPT:
2945 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2946 case SSL_CTRL_SESS_ACCEPT_GOOD:
2947 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2948 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2949 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2950 case SSL_CTRL_SESS_HIT:
2951 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2952 case SSL_CTRL_SESS_CB_HIT:
2953 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2954 case SSL_CTRL_SESS_MISSES:
2955 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2956 case SSL_CTRL_SESS_TIMEOUTS:
2957 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2958 case SSL_CTRL_SESS_CACHE_FULL:
2959 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2961 return (ctx->mode |= larg);
2962 case SSL_CTRL_CLEAR_MODE:
2963 return (ctx->mode &= ~larg);
2964 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2965 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2967 ctx->max_send_fragment = larg;
2968 if (ctx->max_send_fragment < ctx->split_send_fragment)
2969 ctx->split_send_fragment = ctx->max_send_fragment;
2971 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2972 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2974 ctx->split_send_fragment = larg;
2976 case SSL_CTRL_SET_MAX_PIPELINES:
2977 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2979 ctx->max_pipelines = larg;
2981 case SSL_CTRL_CERT_FLAGS:
2982 return (ctx->cert->cert_flags |= larg);
2983 case SSL_CTRL_CLEAR_CERT_FLAGS:
2984 return (ctx->cert->cert_flags &= ~larg);
2985 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2986 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2987 && ssl_set_version_bound(ctx->method->version, (int)larg,
2988 &ctx->min_proto_version);
2989 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2990 return ctx->min_proto_version;
2991 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2992 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2993 && ssl_set_version_bound(ctx->method->version, (int)larg,
2994 &ctx->max_proto_version);
2995 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2996 return ctx->max_proto_version;
2998 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3002 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3005 case SSL_CTRL_SET_MSG_CALLBACK:
3006 ctx->msg_callback = (void (*)
3007 (int write_p, int version, int content_type,
3008 const void *buf, size_t len, SSL *ssl,
3013 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3017 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3026 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3027 const SSL_CIPHER *const *bp)
3029 if ((*ap)->id > (*bp)->id)
3031 if ((*ap)->id < (*bp)->id)
3037 * return a STACK of the ciphers available for the SSL and in order of
3040 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3042 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3045 if (sc->cipher_list != NULL) {
3046 return sc->cipher_list;
3047 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3048 return s->ctx->cipher_list;
3054 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3056 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3058 if (sc == NULL || !sc->server)
3060 return sc->peer_ciphers;
3063 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3065 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3067 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3072 ciphers = SSL_get_ciphers(s);
3075 if (!ssl_set_client_disabled(sc))
3077 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3078 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3079 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3081 sk = sk_SSL_CIPHER_new_null();
3084 if (!sk_SSL_CIPHER_push(sk, c)) {
3085 sk_SSL_CIPHER_free(sk);
3093 /** return a STACK of the ciphers available for the SSL and in order of
3095 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3098 if (s->cipher_list_by_id != NULL)
3099 return s->cipher_list_by_id;
3100 else if (s->ssl.ctx != NULL
3101 && s->ssl.ctx->cipher_list_by_id != NULL)
3102 return s->ssl.ctx->cipher_list_by_id;
3107 /** The old interface to get the same thing as SSL_get_ciphers() */
3108 const char *SSL_get_cipher_list(const SSL *s, int n)
3110 const SSL_CIPHER *c;
3111 STACK_OF(SSL_CIPHER) *sk;
3115 sk = SSL_get_ciphers(s);
3116 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3118 c = sk_SSL_CIPHER_value(sk, n);
3124 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3126 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3129 return ctx->cipher_list;
3134 * Distinguish between ciphers controlled by set_ciphersuite() and
3135 * set_cipher_list() when counting.
3137 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3140 const SSL_CIPHER *c;
3144 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3145 c = sk_SSL_CIPHER_value(sk, i);
3146 if (c->min_tls >= TLS1_3_VERSION)
3153 /** specify the ciphers to be used by default by the SSL_CTX */
3154 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3156 STACK_OF(SSL_CIPHER) *sk;
3158 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3159 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3162 * ssl_create_cipher_list may return an empty stack if it was unable to
3163 * find a cipher matching the given rule string (for example if the rule
3164 * string specifies a cipher which has been disabled). This is not an
3165 * error as far as ssl_create_cipher_list is concerned, and hence
3166 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3170 else if (cipher_list_tls12_num(sk) == 0) {
3171 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3177 /** specify the ciphers to be used by the SSL */
3178 int SSL_set_cipher_list(SSL *s, const char *str)
3180 STACK_OF(SSL_CIPHER) *sk;
3181 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3186 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3187 &sc->cipher_list, &sc->cipher_list_by_id, str,
3189 /* see comment in SSL_CTX_set_cipher_list */
3192 else if (cipher_list_tls12_num(sk) == 0) {
3193 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3199 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3202 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3203 const SSL_CIPHER *c;
3205 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3211 || sc->peer_ciphers == NULL
3216 clntsk = sc->peer_ciphers;
3217 srvrsk = SSL_get_ciphers(s);
3218 if (clntsk == NULL || srvrsk == NULL)
3221 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3224 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3227 c = sk_SSL_CIPHER_value(clntsk, i);
3228 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3231 n = strlen(c->name);
3248 * Return the requested servername (SNI) value. Note that the behaviour varies
3250 * - whether this is called by the client or the server,
3251 * - if we are before or during/after the handshake,
3252 * - if a resumption or normal handshake is being attempted/has occurred
3253 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3255 * Note that only the host_name type is defined (RFC 3546).
3257 const char *SSL_get_servername(const SSL *s, const int type)
3259 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3266 * If we don't know if we are the client or the server yet then we assume
3269 server = sc->handshake_func == NULL ? 0 : sc->server;
3271 if (type != TLSEXT_NAMETYPE_host_name)
3277 * In TLSv1.3 on the server SNI is not associated with the session
3278 * but in TLSv1.2 or below it is.
3280 * Before the handshake:
3283 * During/after the handshake (TLSv1.2 or below resumption occurred):
3284 * - If a servername was accepted by the server in the original
3285 * handshake then it will return that servername, or NULL otherwise.
3287 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3288 * - The function will return the servername requested by the client in
3289 * this handshake or NULL if none was requested.
3291 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3292 return sc->session->ext.hostname;
3297 * Before the handshake:
3298 * - If a servername has been set via a call to
3299 * SSL_set_tlsext_host_name() then it will return that servername
3300 * - If one has not been set, but a TLSv1.2 resumption is being
3301 * attempted and the session from the original handshake had a
3302 * servername accepted by the server then it will return that
3304 * - Otherwise it returns NULL
3306 * During/after the handshake (TLSv1.2 or below resumption occurred):
3307 * - If the session from the original handshake had a servername accepted
3308 * by the server then it will return that servername.
3309 * - Otherwise it returns the servername set via
3310 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3312 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3313 * - It will return the servername set via SSL_set_tlsext_host_name()
3314 * (or NULL if it was not called).
3316 if (SSL_in_before(s)) {
3317 if (sc->ext.hostname == NULL
3318 && sc->session != NULL
3319 && sc->session->ssl_version != TLS1_3_VERSION)
3320 return sc->session->ext.hostname;
3322 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3323 && sc->session->ext.hostname != NULL)
3324 return sc->session->ext.hostname;
3328 return sc->ext.hostname;
3331 int SSL_get_servername_type(const SSL *s)
3333 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3334 return TLSEXT_NAMETYPE_host_name;
3339 * SSL_select_next_proto implements the standard protocol selection. It is
3340 * expected that this function is called from the callback set by
3341 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3342 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3343 * not included in the length. A byte string of length 0 is invalid. No byte
3344 * string may be truncated. The current, but experimental algorithm for
3345 * selecting the protocol is: 1) If the server doesn't support NPN then this
3346 * is indicated to the callback. In this case, the client application has to
3347 * abort the connection or have a default application level protocol. 2) If
3348 * the server supports NPN, but advertises an empty list then the client
3349 * selects the first protocol in its list, but indicates via the API that this
3350 * fallback case was enacted. 3) Otherwise, the client finds the first
3351 * protocol in the server's list that it supports and selects this protocol.
3352 * This is because it's assumed that the server has better information about
3353 * which protocol a client should use. 4) If the client doesn't support any
3354 * of the server's advertised protocols, then this is treated the same as
3355 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3356 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3358 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3359 const unsigned char *server,
3360 unsigned int server_len,
3361 const unsigned char *client, unsigned int client_len)
3364 const unsigned char *result;
3365 int status = OPENSSL_NPN_UNSUPPORTED;
3368 * For each protocol in server preference order, see if we support it.
3370 for (i = 0; i < server_len;) {
3371 for (j = 0; j < client_len;) {
3372 if (server[i] == client[j] &&
3373 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3374 /* We found a match */
3375 result = &server[i];
3376 status = OPENSSL_NPN_NEGOTIATED;
3386 /* There's no overlap between our protocols and the server's list. */
3388 status = OPENSSL_NPN_NO_OVERLAP;
3391 *out = (unsigned char *)result + 1;
3392 *outlen = result[0];
3396 #ifndef OPENSSL_NO_NEXTPROTONEG
3398 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3399 * client's requested protocol for this connection and returns 0. If the
3400 * client didn't request any protocol, then *data is set to NULL. Note that
3401 * the client can request any protocol it chooses. The value returned from
3402 * this function need not be a member of the list of supported protocols
3403 * provided by the callback.
3405 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3408 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3411 /* We have no other way to indicate error */
3417 *data = sc->ext.npn;
3418 if (*data == NULL) {
3421 *len = (unsigned int)sc->ext.npn_len;
3426 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3427 * a TLS server needs a list of supported protocols for Next Protocol
3428 * Negotiation. The returned list must be in wire format. The list is
3429 * returned by setting |out| to point to it and |outlen| to its length. This
3430 * memory will not be modified, but one should assume that the SSL* keeps a
3431 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3432 * wishes to advertise. Otherwise, no such extension will be included in the
3435 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3436 SSL_CTX_npn_advertised_cb_func cb,
3439 ctx->ext.npn_advertised_cb = cb;
3440 ctx->ext.npn_advertised_cb_arg = arg;
3444 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3445 * client needs to select a protocol from the server's provided list. |out|
3446 * must be set to point to the selected protocol (which may be within |in|).
3447 * The length of the protocol name must be written into |outlen|. The
3448 * server's advertised protocols are provided in |in| and |inlen|. The
3449 * callback can assume that |in| is syntactically valid. The client must
3450 * select a protocol. It is fatal to the connection if this callback returns
3451 * a value other than SSL_TLSEXT_ERR_OK.
3453 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3454 SSL_CTX_npn_select_cb_func cb,
3457 ctx->ext.npn_select_cb = cb;
3458 ctx->ext.npn_select_cb_arg = arg;
3462 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3466 if (protos_len < 2 || protos == NULL)
3469 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3470 if (protos[idx] == 0)
3473 return idx == protos_len;
3476 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3477 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3478 * length-prefixed strings). Returns 0 on success.
3480 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3481 unsigned int protos_len)
3483 unsigned char *alpn;
3485 if (protos_len == 0 || protos == NULL) {
3486 OPENSSL_free(ctx->ext.alpn);
3487 ctx->ext.alpn = NULL;
3488 ctx->ext.alpn_len = 0;
3491 /* Not valid per RFC */
3492 if (!alpn_value_ok(protos, protos_len))
3495 alpn = OPENSSL_memdup(protos, protos_len);
3498 OPENSSL_free(ctx->ext.alpn);
3499 ctx->ext.alpn = alpn;
3500 ctx->ext.alpn_len = protos_len;
3506 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3507 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3508 * length-prefixed strings). Returns 0 on success.
3510 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3511 unsigned int protos_len)
3513 unsigned char *alpn;
3514 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3519 if (protos_len == 0 || protos == NULL) {
3520 OPENSSL_free(sc->ext.alpn);
3521 sc->ext.alpn = NULL;
3522 sc->ext.alpn_len = 0;
3525 /* Not valid per RFC */
3526 if (!alpn_value_ok(protos, protos_len))
3529 alpn = OPENSSL_memdup(protos, protos_len);
3532 OPENSSL_free(sc->ext.alpn);
3533 sc->ext.alpn = alpn;
3534 sc->ext.alpn_len = protos_len;
3540 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3541 * called during ClientHello processing in order to select an ALPN protocol
3542 * from the client's list of offered protocols.
3544 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3545 SSL_CTX_alpn_select_cb_func cb,
3548 ctx->ext.alpn_select_cb = cb;
3549 ctx->ext.alpn_select_cb_arg = arg;
3553 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3554 * On return it sets |*data| to point to |*len| bytes of protocol name
3555 * (not including the leading length-prefix byte). If the server didn't
3556 * respond with a negotiated protocol then |*len| will be zero.
3558 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3561 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3564 /* We have no other way to indicate error */
3570 *data = sc->s3.alpn_selected;
3574 *len = (unsigned int)sc->s3.alpn_selected_len;
3577 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3578 const char *label, size_t llen,
3579 const unsigned char *context, size_t contextlen,
3582 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3587 if (sc->session == NULL
3588 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3591 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3593 contextlen, use_context);
3596 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3597 const char *label, size_t llen,
3598 const unsigned char *context,
3601 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3606 if (sc->version != TLS1_3_VERSION)
3609 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3610 context, contextlen);
3613 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3615 const unsigned char *session_id = a->session_id;
3617 unsigned char tmp_storage[4];
3619 if (a->session_id_length < sizeof(tmp_storage)) {
3620 memset(tmp_storage, 0, sizeof(tmp_storage));
3621 memcpy(tmp_storage, a->session_id, a->session_id_length);
3622 session_id = tmp_storage;
3626 ((unsigned long)session_id[0]) |
3627 ((unsigned long)session_id[1] << 8L) |
3628 ((unsigned long)session_id[2] << 16L) |
3629 ((unsigned long)session_id[3] << 24L);
3634 * NB: If this function (or indeed the hash function which uses a sort of
3635 * coarser function than this one) is changed, ensure
3636 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3637 * being able to construct an SSL_SESSION that will collide with any existing
3638 * session with a matching session ID.
3640 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3642 if (a->ssl_version != b->ssl_version)
3644 if (a->session_id_length != b->session_id_length)
3646 return memcmp(a->session_id, b->session_id, a->session_id_length);
3650 * These wrapper functions should remain rather than redeclaring
3651 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3652 * variable. The reason is that the functions aren't static, they're exposed
3656 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3657 const SSL_METHOD *meth)
3659 SSL_CTX *ret = NULL;
3660 #ifndef OPENSSL_NO_COMP_ALG
3665 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3669 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3672 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3673 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3676 ret = OPENSSL_zalloc(sizeof(*ret));
3680 /* Init the reference counting before any call to SSL_CTX_free */
3681 ret->references = 1;
3682 ret->lock = CRYPTO_THREAD_lock_new();
3683 if (ret->lock == NULL) {
3684 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3688 #ifdef TSAN_REQUIRES_LOCKING
3689 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3690 if (ret->tsan_lock == NULL) {
3691 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3696 ret->libctx = libctx;
3697 if (propq != NULL) {
3698 ret->propq = OPENSSL_strdup(propq);
3699 if (ret->propq == NULL)
3704 ret->min_proto_version = 0;
3705 ret->max_proto_version = 0;
3706 ret->mode = SSL_MODE_AUTO_RETRY;
3707 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3708 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3709 /* We take the system default. */
3710 ret->session_timeout = meth->get_timeout();
3711 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3712 ret->verify_mode = SSL_VERIFY_NONE;
3713 if ((ret->cert = ssl_cert_new()) == NULL) {
3714 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3718 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3719 if (ret->sessions == NULL) {
3720 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3723 ret->cert_store = X509_STORE_new();
3724 if (ret->cert_store == NULL) {
3725 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3728 #ifndef OPENSSL_NO_CT
3729 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3730 if (ret->ctlog_store == NULL) {
3731 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3736 /* initialize cipher/digest methods table */
3737 if (!ssl_load_ciphers(ret))
3739 /* initialise sig algs */
3740 if (!ssl_setup_sig_algs(ret))
3743 if (!ssl_load_groups(ret))
3746 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3747 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3751 if (!ssl_create_cipher_list(ret,
3752 ret->tls13_ciphersuites,
3753 &ret->cipher_list, &ret->cipher_list_by_id,
3754 OSSL_default_cipher_list(), ret->cert)
3755 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3756 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3760 ret->param = X509_VERIFY_PARAM_new();
3761 if (ret->param == NULL) {
3762 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3767 * If these aren't available from the provider we'll get NULL returns.
3768 * That's fine but will cause errors later if SSLv3 is negotiated
3770 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3771 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3773 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3774 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3778 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3779 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3783 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3784 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3788 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3791 /* No compression for DTLS */
3792 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3793 ret->comp_methods = SSL_COMP_get_compression_methods();
3795 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3796 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3798 /* Setup RFC5077 ticket keys */
3799 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3800 sizeof(ret->ext.tick_key_name), 0) <= 0)
3801 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3802 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3803 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3804 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3805 ret->options |= SSL_OP_NO_TICKET;
3807 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3808 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3809 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3813 #ifndef OPENSSL_NO_SRP
3814 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3815 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3819 #ifndef OPENSSL_NO_ENGINE
3820 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3821 # define eng_strx(x) #x
3822 # define eng_str(x) eng_strx(x)
3823 /* Use specific client engine automatically... ignore errors */
3826 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3829 ENGINE_load_builtin_engines();
3830 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3832 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3838 #ifndef OPENSSL_NO_COMP_ALG
3840 * Set the default order: brotli, zlib, zstd
3841 * Including only those enabled algorithms
3843 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3845 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3846 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3847 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3848 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3849 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3850 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3853 * Disable compression by default to prevent CRIME. Applications can
3854 * re-enable compression by configuring
3855 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3856 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3857 * middlebox compatibility by default. This may be disabled by default in
3858 * a later OpenSSL version.
3860 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3862 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3865 * We cannot usefully set a default max_early_data here (which gets
3866 * propagated in SSL_new(), for the following reason: setting the
3867 * SSL field causes tls_construct_stoc_early_data() to tell the
3868 * client that early data will be accepted when constructing a TLS 1.3
3869 * session ticket, and the client will accordingly send us early data
3870 * when using that ticket (if the client has early data to send).
3871 * However, in order for the early data to actually be consumed by
3872 * the application, the application must also have calls to
3873 * SSL_read_early_data(); otherwise we'll just skip past the early data
3874 * and ignore it. So, since the application must add calls to
3875 * SSL_read_early_data(), we also require them to add
3876 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3877 * eliminating the bandwidth-wasting early data in the case described
3880 ret->max_early_data = 0;
3883 * Default recv_max_early_data is a fully loaded single record. Could be
3884 * split across multiple records in practice. We set this differently to
3885 * max_early_data so that, in the default case, we do not advertise any
3886 * support for early_data, but if a client were to send us some (e.g.
3887 * because of an old, stale ticket) then we will tolerate it and skip over
3890 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3892 /* By default we send two session tickets automatically in TLSv1.3 */
3893 ret->num_tickets = 2;
3895 ssl_ctx_system_config(ret);
3903 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3905 return SSL_CTX_new_ex(NULL, NULL, meth);
3908 int SSL_CTX_up_ref(SSL_CTX *ctx)
3912 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3915 REF_PRINT_COUNT("SSL_CTX", ctx);
3916 REF_ASSERT_ISNT(i < 2);
3917 return ((i > 1) ? 1 : 0);
3920 void SSL_CTX_free(SSL_CTX *a)
3928 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3929 REF_PRINT_COUNT("SSL_CTX", a);
3932 REF_ASSERT_ISNT(i < 0);
3934 X509_VERIFY_PARAM_free(a->param);
3935 dane_ctx_final(&a->dane);
3938 * Free internal session cache. However: the remove_cb() may reference
3939 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3940 * after the sessions were flushed.
3941 * As the ex_data handling routines might also touch the session cache,
3942 * the most secure solution seems to be: empty (flush) the cache, then
3943 * free ex_data, then finally free the cache.
3944 * (See ticket [openssl.org #212].)
3946 if (a->sessions != NULL)
3947 SSL_CTX_flush_sessions(a, 0);
3949 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3950 lh_SSL_SESSION_free(a->sessions);
3951 X509_STORE_free(a->cert_store);
3952 #ifndef OPENSSL_NO_CT
3953 CTLOG_STORE_free(a->ctlog_store);
3955 sk_SSL_CIPHER_free(a->cipher_list);
3956 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3957 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3958 ssl_cert_free(a->cert);
3959 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3960 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3961 OSSL_STACK_OF_X509_free(a->extra_certs);
3962 a->comp_methods = NULL;
3963 #ifndef OPENSSL_NO_SRTP
3964 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3966 #ifndef OPENSSL_NO_SRP
3967 ssl_ctx_srp_ctx_free_intern(a);
3969 #ifndef OPENSSL_NO_ENGINE
3970 tls_engine_finish(a->client_cert_engine);
3973 OPENSSL_free(a->ext.ecpointformats);
3974 OPENSSL_free(a->ext.supportedgroups);
3975 OPENSSL_free(a->ext.supported_groups_default);
3976 OPENSSL_free(a->ext.alpn);
3977 OPENSSL_secure_free(a->ext.secure);
3979 ssl_evp_md_free(a->md5);
3980 ssl_evp_md_free(a->sha1);
3982 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3983 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3984 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3985 ssl_evp_md_free(a->ssl_digest_methods[j]);
3986 for (j = 0; j < a->group_list_len; j++) {
3987 OPENSSL_free(a->group_list[j].tlsname);
3988 OPENSSL_free(a->group_list[j].realname);
3989 OPENSSL_free(a->group_list[j].algorithm);
3991 OPENSSL_free(a->group_list);
3993 OPENSSL_free(a->sigalg_lookup_cache);
3995 CRYPTO_THREAD_lock_free(a->lock);
3996 #ifdef TSAN_REQUIRES_LOCKING
3997 CRYPTO_THREAD_lock_free(a->tsan_lock);
4000 OPENSSL_free(a->propq);
4005 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4007 ctx->default_passwd_callback = cb;
4010 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4012 ctx->default_passwd_callback_userdata = u;
4015 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4017 return ctx->default_passwd_callback;
4020 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4022 return ctx->default_passwd_callback_userdata;
4025 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4032 sc->default_passwd_callback = cb;
4035 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4037 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4042 sc->default_passwd_callback_userdata = u;
4045 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4047 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4052 return sc->default_passwd_callback;
4055 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4057 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4062 return sc->default_passwd_callback_userdata;
4065 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4066 int (*cb) (X509_STORE_CTX *, void *),
4069 ctx->app_verify_callback = cb;
4070 ctx->app_verify_arg = arg;
4073 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4074 int (*cb) (int, X509_STORE_CTX *))
4076 ctx->verify_mode = mode;
4077 ctx->default_verify_callback = cb;
4080 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4082 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4085 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4087 ssl_cert_set_cert_cb(c->cert, cb, arg);
4090 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4092 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4097 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4100 void ssl_set_masks(SSL_CONNECTION *s)
4103 uint32_t *pvalid = s->s3.tmp.valid_flags;
4104 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4105 unsigned long mask_k, mask_a;
4106 int have_ecc_cert, ecdsa_ok;
4111 dh_tmp = (c->dh_tmp != NULL
4112 || c->dh_tmp_cb != NULL
4115 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4116 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4117 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4118 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4122 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4123 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4125 #ifndef OPENSSL_NO_GOST
4126 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4127 mask_k |= SSL_kGOST | SSL_kGOST18;
4128 mask_a |= SSL_aGOST12;
4130 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4131 mask_k |= SSL_kGOST | SSL_kGOST18;
4132 mask_a |= SSL_aGOST12;
4134 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4135 mask_k |= SSL_kGOST;
4136 mask_a |= SSL_aGOST01;
4147 * If we only have an RSA-PSS certificate allow RSA authentication
4148 * if TLS 1.2 and peer supports it.
4151 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4152 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4153 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4160 mask_a |= SSL_aNULL;
4163 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4164 * depending on the key usage extension.
4166 if (have_ecc_cert) {
4168 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4169 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4170 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4173 mask_a |= SSL_aECDSA;
4175 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4176 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4177 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4178 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4179 mask_a |= SSL_aECDSA;
4181 /* Allow Ed448 for TLS 1.2 if peer supports it */
4182 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4183 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4184 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4185 mask_a |= SSL_aECDSA;
4187 mask_k |= SSL_kECDHE;
4189 #ifndef OPENSSL_NO_PSK
4192 if (mask_k & SSL_kRSA)
4193 mask_k |= SSL_kRSAPSK;
4194 if (mask_k & SSL_kDHE)
4195 mask_k |= SSL_kDHEPSK;
4196 if (mask_k & SSL_kECDHE)
4197 mask_k |= SSL_kECDHEPSK;
4200 s->s3.tmp.mask_k = mask_k;
4201 s->s3.tmp.mask_a = mask_a;
4204 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4206 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4207 /* key usage, if present, must allow signing */
4208 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4209 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4213 return 1; /* all checks are ok */
4216 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4217 const unsigned char **serverinfo,
4218 size_t *serverinfo_length)
4220 CERT_PKEY *cpk = s->s3.tmp.cert;
4221 *serverinfo_length = 0;
4223 if (cpk == NULL || cpk->serverinfo == NULL)
4226 *serverinfo = cpk->serverinfo;
4227 *serverinfo_length = cpk->serverinfo_length;
4231 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4236 * If the session_id_length is 0, we are not supposed to cache it, and it
4237 * would be rather hard to do anyway :-)
4239 if (s->session->session_id_length == 0)
4243 * If sid_ctx_length is 0 there is no specific application context
4244 * associated with this session, so when we try to resume it and
4245 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4246 * indication that this is actually a session for the proper application
4247 * context, and the *handshake* will fail, not just the resumption attempt.
4248 * Do not cache (on the server) these sessions that are not resumable
4249 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4251 if (s->server && s->session->sid_ctx_length == 0
4252 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4255 i = s->session_ctx->session_cache_mode;
4257 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4259 * Add the session to the internal cache. In server side TLSv1.3 we
4260 * normally don't do this because by default it's a full stateless ticket
4261 * with only a dummy session id so there is no reason to cache it,
4263 * - we are doing early_data, in which case we cache so that we can
4265 * - the application has set a remove_session_cb so needs to know about
4266 * session timeout events
4267 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4269 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4270 && (!SSL_CONNECTION_IS_TLS13(s)
4272 || (s->max_early_data > 0
4273 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4274 || s->session_ctx->remove_session_cb != NULL
4275 || (s->options & SSL_OP_NO_TICKET) != 0))
4276 SSL_CTX_add_session(s->session_ctx, s->session);
4279 * Add the session to the external cache. We do this even in server side
4280 * TLSv1.3 without early data because some applications just want to
4281 * know about the creation of a session and aren't doing a full cache.
4283 if (s->session_ctx->new_session_cb != NULL) {
4284 SSL_SESSION_up_ref(s->session);
4285 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4287 SSL_SESSION_free(s->session);
4291 /* auto flush every 255 connections */
4292 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4293 TSAN_QUALIFIER int *stat;
4295 if (mode & SSL_SESS_CACHE_CLIENT)
4296 stat = &s->session_ctx->stats.sess_connect_good;
4298 stat = &s->session_ctx->stats.sess_accept_good;
4299 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4300 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4304 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4309 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4314 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4317 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4319 /* TODO(QUIC): Do we want this for QUIC? */
4321 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4324 if (s->method != meth) {
4325 const SSL_METHOD *sm = s->method;
4326 int (*hf) (SSL *) = sc->handshake_func;
4328 if (sm->version == meth->version)
4333 ret = s->method->ssl_init(s);
4336 if (hf == sm->ssl_connect)
4337 sc->handshake_func = meth->ssl_connect;
4338 else if (hf == sm->ssl_accept)
4339 sc->handshake_func = meth->ssl_accept;
4344 int SSL_get_error(const SSL *s, int i)
4349 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4352 return SSL_ERROR_NONE;
4354 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4356 return SSL_ERROR_SSL;
4359 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4360 * where we do encode the error
4362 if ((l = ERR_peek_error()) != 0) {
4363 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4364 return SSL_ERROR_SYSCALL;
4366 return SSL_ERROR_SSL;
4369 if (SSL_want_read(s)) {
4370 bio = SSL_get_rbio(s);
4371 if (BIO_should_read(bio))
4372 return SSL_ERROR_WANT_READ;
4373 else if (BIO_should_write(bio))
4375 * This one doesn't make too much sense ... We never try to write
4376 * to the rbio, and an application program where rbio and wbio
4377 * are separate couldn't even know what it should wait for.
4378 * However if we ever set s->rwstate incorrectly (so that we have
4379 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4380 * wbio *are* the same, this test works around that bug; so it
4381 * might be safer to keep it.
4383 return SSL_ERROR_WANT_WRITE;
4384 else if (BIO_should_io_special(bio)) {
4385 reason = BIO_get_retry_reason(bio);
4386 if (reason == BIO_RR_CONNECT)
4387 return SSL_ERROR_WANT_CONNECT;
4388 else if (reason == BIO_RR_ACCEPT)
4389 return SSL_ERROR_WANT_ACCEPT;
4391 return SSL_ERROR_SYSCALL; /* unknown */
4395 if (SSL_want_write(s)) {
4396 /* Access wbio directly - in order to use the buffered bio if present */
4398 if (BIO_should_write(bio))
4399 return SSL_ERROR_WANT_WRITE;
4400 else if (BIO_should_read(bio))
4402 * See above (SSL_want_read(s) with BIO_should_write(bio))
4404 return SSL_ERROR_WANT_READ;
4405 else if (BIO_should_io_special(bio)) {
4406 reason = BIO_get_retry_reason(bio);
4407 if (reason == BIO_RR_CONNECT)
4408 return SSL_ERROR_WANT_CONNECT;
4409 else if (reason == BIO_RR_ACCEPT)
4410 return SSL_ERROR_WANT_ACCEPT;
4412 return SSL_ERROR_SYSCALL;
4415 if (SSL_want_x509_lookup(s))
4416 return SSL_ERROR_WANT_X509_LOOKUP;
4417 if (SSL_want_retry_verify(s))
4418 return SSL_ERROR_WANT_RETRY_VERIFY;
4419 if (SSL_want_async(s))
4420 return SSL_ERROR_WANT_ASYNC;
4421 if (SSL_want_async_job(s))
4422 return SSL_ERROR_WANT_ASYNC_JOB;
4423 if (SSL_want_client_hello_cb(s))
4424 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4426 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4427 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4428 return SSL_ERROR_ZERO_RETURN;
4430 return SSL_ERROR_SYSCALL;
4433 static int ssl_do_handshake_intern(void *vargs)
4435 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4437 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4442 return sc->handshake_func(s);
4445 int SSL_do_handshake(SSL *s)
4448 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4450 /* TODO(QUIC): Special handling for QUIC will be needed */
4454 if (sc->handshake_func == NULL) {
4455 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4459 ossl_statem_check_finish_init(sc, -1);
4461 s->method->ssl_renegotiate_check(s, 0);
4463 if (SSL_in_init(s) || SSL_in_before(s)) {
4464 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4465 struct ssl_async_args args;
4467 memset(&args, 0, sizeof(args));
4470 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4472 ret = sc->handshake_func(s);
4478 void SSL_set_accept_state(SSL *s)
4480 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4482 /* TODO(QUIC): Special handling for QUIC will be needed */
4488 ossl_statem_clear(sc);
4489 sc->handshake_func = s->method->ssl_accept;
4493 void SSL_set_connect_state(SSL *s)
4495 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4497 /* TODO(QUIC): Special handling for QUIC will be needed */
4503 ossl_statem_clear(sc);
4504 sc->handshake_func = s->method->ssl_connect;
4508 int ssl_undefined_function(SSL *s)
4510 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4514 int ssl_undefined_void_function(void)
4516 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4520 int ssl_undefined_const_function(const SSL *s)
4525 const SSL_METHOD *ssl_bad_method(int ver)
4527 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4531 const char *ssl_protocol_to_string(int version)
4535 case TLS1_3_VERSION:
4538 case TLS1_2_VERSION:
4541 case TLS1_1_VERSION:
4556 case DTLS1_2_VERSION:
4564 const char *SSL_get_version(const SSL *s)
4566 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4568 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4572 return ssl_protocol_to_string(sc->version);
4575 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4577 STACK_OF(X509_NAME) *sk;
4586 if ((sk = sk_X509_NAME_new_null()) == NULL)
4588 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4589 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4591 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4594 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4596 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4605 SSL *SSL_dup(SSL *s)
4609 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4610 SSL_CONNECTION *retsc;
4611 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4616 /* If we're not quiescent, just up_ref! */
4617 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4618 CRYPTO_UP_REF(&s->references, &i, s->lock);
4623 * Otherwise, copy configuration state, and session if set.
4625 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4627 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4630 if (sc->session != NULL) {
4632 * Arranges to share the same session via up_ref. This "copies"
4633 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4635 if (!SSL_copy_session_id(ret, s))
4639 * No session has been established yet, so we have to expect that
4640 * s->cert or ret->cert will be changed later -- they should not both
4641 * point to the same object, and thus we can't use
4642 * SSL_copy_session_id.
4644 if (!SSL_set_ssl_method(ret, s->method))
4647 if (sc->cert != NULL) {
4648 ssl_cert_free(retsc->cert);
4649 retsc->cert = ssl_cert_dup(sc->cert);
4650 if (retsc->cert == NULL)
4654 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4655 (int)sc->sid_ctx_length))
4659 if (!ssl_dane_dup(retsc, sc))
4661 retsc->version = sc->version;
4662 retsc->options = sc->options;
4663 retsc->min_proto_version = sc->min_proto_version;
4664 retsc->max_proto_version = sc->max_proto_version;
4665 retsc->mode = sc->mode;
4666 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4667 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4668 retsc->msg_callback = sc->msg_callback;
4669 retsc->msg_callback_arg = sc->msg_callback_arg;
4670 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4671 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4672 retsc->generate_session_id = sc->generate_session_id;
4674 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4676 /* copy app data, a little dangerous perhaps */
4677 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4680 retsc->server = sc->server;
4681 if (sc->handshake_func) {
4683 SSL_set_accept_state(ret);
4685 SSL_set_connect_state(ret);
4687 retsc->shutdown = sc->shutdown;
4688 retsc->hit = sc->hit;
4690 retsc->default_passwd_callback = sc->default_passwd_callback;
4691 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4693 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4695 /* dup the cipher_list and cipher_list_by_id stacks */
4696 if (sc->cipher_list != NULL) {
4697 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4700 if (sc->cipher_list_by_id != NULL)
4701 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4705 /* Dup the client_CA list */
4706 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4707 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4717 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4719 if (s->enc_read_ctx != NULL) {
4720 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4721 s->enc_read_ctx = NULL;
4723 if (s->enc_write_ctx != NULL) {
4724 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4725 s->enc_write_ctx = NULL;
4727 #ifndef OPENSSL_NO_COMP
4728 COMP_CTX_free(s->expand);
4730 COMP_CTX_free(s->compress);
4735 X509 *SSL_get_certificate(const SSL *s)
4737 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4742 if (sc->cert != NULL)
4743 return sc->cert->key->x509;
4748 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4750 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4755 if (sc->cert != NULL)
4756 return sc->cert->key->privatekey;
4761 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4763 if (ctx->cert != NULL)
4764 return ctx->cert->key->x509;
4769 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4771 if (ctx->cert != NULL)
4772 return ctx->cert->key->privatekey;
4777 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4779 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4784 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4785 return sc->session->cipher;
4789 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4791 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4796 return sc->s3.tmp.new_cipher;
4799 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4801 #ifndef OPENSSL_NO_COMP
4802 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4807 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4813 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4815 #ifndef OPENSSL_NO_COMP
4816 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4821 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4827 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4831 if (s->bbio != NULL) {
4832 /* Already buffered. */
4836 bbio = BIO_new(BIO_f_buffer());
4837 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4839 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4843 s->wbio = BIO_push(bbio, s->wbio);
4845 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4850 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4852 /* callers ensure s is never null */
4853 if (s->bbio == NULL)
4856 s->wbio = BIO_pop(s->wbio);
4857 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4865 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4867 ctx->quiet_shutdown = mode;
4870 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4872 return ctx->quiet_shutdown;
4875 void SSL_set_quiet_shutdown(SSL *s, int mode)
4877 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4879 /* TODO(QUIC): Do we want this for QUIC? */
4883 sc->quiet_shutdown = mode;
4886 int SSL_get_quiet_shutdown(const SSL *s)
4888 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4890 /* TODO(QUIC): Do we want this for QUIC? */
4894 return sc->quiet_shutdown;
4897 void SSL_set_shutdown(SSL *s, int mode)
4899 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4901 /* TODO(QUIC): Do we want this for QUIC? */
4905 sc->shutdown = mode;
4908 int SSL_get_shutdown(const SSL *s)
4910 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4912 /* TODO(QUIC): Do we want this for QUIC? */
4916 return sc->shutdown;
4919 int SSL_version(const SSL *s)
4921 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4923 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4930 int SSL_client_version(const SSL *s)
4932 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4934 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4938 return sc->client_version;
4941 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4946 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4949 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4951 /* TODO(QUIC): Do we need this for QUIC support? */
4955 if (ssl->ctx == ctx)
4958 ctx = sc->session_ctx;
4959 new_cert = ssl_cert_dup(ctx->cert);
4960 if (new_cert == NULL) {
4964 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4965 ssl_cert_free(new_cert);
4969 ssl_cert_free(sc->cert);
4970 sc->cert = new_cert;
4973 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4974 * so setter APIs must prevent invalid lengths from entering the system.
4976 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4980 * If the session ID context matches that of the parent SSL_CTX,
4981 * inherit it from the new SSL_CTX as well. If however the context does
4982 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4983 * leave it unchanged.
4985 if ((ssl->ctx != NULL) &&
4986 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4987 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4988 sc->sid_ctx_length = ctx->sid_ctx_length;
4989 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4992 SSL_CTX_up_ref(ctx);
4993 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4999 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5001 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5005 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5007 X509_LOOKUP *lookup;
5009 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5013 /* We ignore errors, in case the directory doesn't exist */
5016 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5023 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5025 X509_LOOKUP *lookup;
5027 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5031 /* We ignore errors, in case the file doesn't exist */
5034 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5042 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5044 X509_LOOKUP *lookup;
5046 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5050 /* We ignore errors, in case the directory doesn't exist */
5053 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5060 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5062 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5066 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5068 return X509_STORE_load_path(ctx->cert_store, CApath);
5071 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5073 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5077 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5080 if (CAfile == NULL && CApath == NULL)
5082 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5084 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5089 void SSL_set_info_callback(SSL *ssl,
5090 void (*cb) (const SSL *ssl, int type, int val))
5092 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5097 sc->info_callback = cb;
5101 * One compiler (Diab DCC) doesn't like argument names in returned function
5104 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5107 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5112 return sc->info_callback;
5115 void SSL_set_verify_result(SSL *ssl, long arg)
5117 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5122 sc->verify_result = arg;
5125 long SSL_get_verify_result(const SSL *ssl)
5127 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5132 return sc->verify_result;
5135 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5137 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5143 return sizeof(sc->s3.client_random);
5144 if (outlen > sizeof(sc->s3.client_random))
5145 outlen = sizeof(sc->s3.client_random);
5146 memcpy(out, sc->s3.client_random, outlen);
5150 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5152 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5158 return sizeof(sc->s3.server_random);
5159 if (outlen > sizeof(sc->s3.server_random))
5160 outlen = sizeof(sc->s3.server_random);
5161 memcpy(out, sc->s3.server_random, outlen);
5165 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5166 unsigned char *out, size_t outlen)
5169 return session->master_key_length;
5170 if (outlen > session->master_key_length)
5171 outlen = session->master_key_length;
5172 memcpy(out, session->master_key, outlen);
5176 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5179 if (len > sizeof(sess->master_key))
5182 memcpy(sess->master_key, in, len);
5183 sess->master_key_length = len;
5188 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5190 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5193 void *SSL_get_ex_data(const SSL *s, int idx)
5195 return CRYPTO_get_ex_data(&s->ex_data, idx);
5198 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5200 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5203 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5205 return CRYPTO_get_ex_data(&s->ex_data, idx);
5208 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5210 return ctx->cert_store;
5213 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5215 X509_STORE_free(ctx->cert_store);
5216 ctx->cert_store = store;
5219 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5222 X509_STORE_up_ref(store);
5223 SSL_CTX_set_cert_store(ctx, store);
5226 int SSL_want(const SSL *s)
5228 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5236 #ifndef OPENSSL_NO_PSK
5237 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5239 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5240 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5243 OPENSSL_free(ctx->cert->psk_identity_hint);
5244 if (identity_hint != NULL) {
5245 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5246 if (ctx->cert->psk_identity_hint == NULL)
5249 ctx->cert->psk_identity_hint = NULL;
5253 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5255 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5260 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5261 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5264 OPENSSL_free(sc->cert->psk_identity_hint);
5265 if (identity_hint != NULL) {
5266 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5267 if (sc->cert->psk_identity_hint == NULL)
5270 sc->cert->psk_identity_hint = NULL;
5274 const char *SSL_get_psk_identity_hint(const SSL *s)
5276 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5278 if (sc == NULL || sc->session == NULL)
5281 return sc->session->psk_identity_hint;
5284 const char *SSL_get_psk_identity(const SSL *s)
5286 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5288 if (sc == NULL || sc->session == NULL)
5291 return sc->session->psk_identity;
5294 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5296 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5301 sc->psk_client_callback = cb;
5304 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5306 ctx->psk_client_callback = cb;
5309 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5311 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5316 sc->psk_server_callback = cb;
5319 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5321 ctx->psk_server_callback = cb;
5325 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5327 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5332 sc->psk_find_session_cb = cb;
5335 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5336 SSL_psk_find_session_cb_func cb)
5338 ctx->psk_find_session_cb = cb;
5341 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5343 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5348 sc->psk_use_session_cb = cb;
5351 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5352 SSL_psk_use_session_cb_func cb)
5354 ctx->psk_use_session_cb = cb;
5357 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5358 void (*cb) (int write_p, int version,
5359 int content_type, const void *buf,
5360 size_t len, SSL *ssl, void *arg))
5362 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5365 void SSL_set_msg_callback(SSL *ssl,
5366 void (*cb) (int write_p, int version,
5367 int content_type, const void *buf,
5368 size_t len, SSL *ssl, void *arg))
5370 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5373 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5374 int (*cb) (SSL *ssl,
5378 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5379 (void (*)(void))cb);
5382 void SSL_set_not_resumable_session_callback(SSL *ssl,
5383 int (*cb) (SSL *ssl,
5384 int is_forward_secure))
5386 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5387 (void (*)(void))cb);
5390 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5391 size_t (*cb) (SSL *ssl, int type,
5392 size_t len, void *arg))
5394 ctx->record_padding_cb = cb;
5397 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5399 ctx->record_padding_arg = arg;
5402 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5404 return ctx->record_padding_arg;
5407 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5409 /* block size of 0 or 1 is basically no padding */
5410 if (block_size == 1)
5411 ctx->block_padding = 0;
5412 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5413 ctx->block_padding = block_size;
5419 int SSL_set_record_padding_callback(SSL *ssl,
5420 size_t (*cb) (SSL *ssl, int type,
5421 size_t len, void *arg))
5424 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5429 b = SSL_get_wbio(ssl);
5430 if (b == NULL || !BIO_get_ktls_send(b)) {
5431 sc->rlayer.record_padding_cb = cb;
5437 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5439 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5444 sc->rlayer.record_padding_arg = arg;
5447 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5449 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5454 return sc->rlayer.record_padding_arg;
5457 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5459 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5464 /* block size of 0 or 1 is basically no padding */
5465 if (block_size == 1)
5466 sc->rlayer.block_padding = 0;
5467 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5468 sc->rlayer.block_padding = block_size;
5474 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5476 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5481 sc->num_tickets = num_tickets;
5486 size_t SSL_get_num_tickets(const SSL *s)
5488 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5493 return sc->num_tickets;
5496 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5498 ctx->num_tickets = num_tickets;
5503 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5505 return ctx->num_tickets;
5509 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5510 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5511 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5512 * Returns the newly allocated ctx;
5515 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5517 ssl_clear_hash_ctx(hash);
5518 *hash = EVP_MD_CTX_new();
5519 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5520 EVP_MD_CTX_free(*hash);
5527 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5530 EVP_MD_CTX_free(*hash);
5534 /* Retrieve handshake hashes */
5535 int ssl_handshake_hash(SSL_CONNECTION *s,
5536 unsigned char *out, size_t outlen,
5539 EVP_MD_CTX *ctx = NULL;
5540 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5541 int hashleni = EVP_MD_CTX_get_size(hdgst);
5544 if (hashleni < 0 || (size_t)hashleni > outlen) {
5545 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5549 ctx = EVP_MD_CTX_new();
5551 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5555 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5556 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5557 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5561 *hashlen = hashleni;
5565 EVP_MD_CTX_free(ctx);
5569 int SSL_session_reused(const SSL *s)
5571 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5579 int SSL_is_server(const SSL *s)
5581 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5589 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5590 void SSL_set_debug(SSL *s, int debug)
5592 /* Old function was do-nothing anyway... */
5598 void SSL_set_security_level(SSL *s, int level)
5600 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5605 sc->cert->sec_level = level;
5608 int SSL_get_security_level(const SSL *s)
5610 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5615 return sc->cert->sec_level;
5618 void SSL_set_security_callback(SSL *s,
5619 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5620 int op, int bits, int nid,
5621 void *other, void *ex))
5623 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5628 sc->cert->sec_cb = cb;
5631 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5632 const SSL_CTX *ctx, int op,
5633 int bits, int nid, void *other,
5635 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5640 return sc->cert->sec_cb;
5643 void SSL_set0_security_ex_data(SSL *s, void *ex)
5645 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5650 sc->cert->sec_ex = ex;
5653 void *SSL_get0_security_ex_data(const SSL *s)
5655 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5660 return sc->cert->sec_ex;
5663 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5665 ctx->cert->sec_level = level;
5668 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5670 return ctx->cert->sec_level;
5673 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5674 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5675 int op, int bits, int nid,
5676 void *other, void *ex))
5678 ctx->cert->sec_cb = cb;
5681 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5687 return ctx->cert->sec_cb;
5690 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5692 ctx->cert->sec_ex = ex;
5695 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5697 return ctx->cert->sec_ex;
5700 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5702 return ctx->options;
5705 uint64_t SSL_get_options(const SSL *s)
5707 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5715 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5717 return ctx->options |= op;
5720 uint64_t SSL_set_options(SSL *s, uint64_t op)
5722 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5723 OSSL_PARAM options[2], *opts = options;
5730 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5732 *opts = OSSL_PARAM_construct_end();
5734 /* Ignore return value */
5735 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5740 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5742 return ctx->options &= ~op;
5745 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5747 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5752 return sc->options &= ~op;
5755 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5757 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5762 return sc->verified_chain;
5765 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5767 #ifndef OPENSSL_NO_CT
5770 * Moves SCTs from the |src| stack to the |dst| stack.
5771 * The source of each SCT will be set to |origin|.
5772 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5774 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5776 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5777 sct_source_t origin)
5783 *dst = sk_SCT_new_null();
5785 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5790 while (sk_SCT_num(src) > 0) {
5791 sct = sk_SCT_pop(src);
5792 if (SCT_set_source(sct, origin) != 1)
5795 if (sk_SCT_push(*dst, sct) <= 0)
5803 sk_SCT_push(src, sct); /* Put the SCT back */
5808 * Look for data collected during ServerHello and parse if found.
5809 * Returns the number of SCTs extracted.
5811 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5813 int scts_extracted = 0;
5815 if (s->ext.scts != NULL) {
5816 const unsigned char *p = s->ext.scts;
5817 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5819 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5821 SCT_LIST_free(scts);
5824 return scts_extracted;
5828 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5829 * contains an SCT X509 extension. They will be stored in |s->scts|.
5831 * - The number of SCTs extracted, assuming an OCSP response exists.
5832 * - 0 if no OCSP response exists or it contains no SCTs.
5833 * - A negative integer if an error occurs.
5835 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5837 # ifndef OPENSSL_NO_OCSP
5838 int scts_extracted = 0;
5839 const unsigned char *p;
5840 OCSP_BASICRESP *br = NULL;
5841 OCSP_RESPONSE *rsp = NULL;
5842 STACK_OF(SCT) *scts = NULL;
5845 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5848 p = s->ext.ocsp.resp;
5849 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5853 br = OCSP_response_get1_basic(rsp);
5857 for (i = 0; i < OCSP_resp_count(br); ++i) {
5858 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5864 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5866 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5867 if (scts_extracted < 0)
5871 SCT_LIST_free(scts);
5872 OCSP_BASICRESP_free(br);
5873 OCSP_RESPONSE_free(rsp);
5874 return scts_extracted;
5876 /* Behave as if no OCSP response exists */
5882 * Attempts to extract SCTs from the peer certificate.
5883 * Return the number of SCTs extracted, or a negative integer if an error
5886 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5888 int scts_extracted = 0;
5889 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5892 STACK_OF(SCT) *scts =
5893 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5896 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5898 SCT_LIST_free(scts);
5901 return scts_extracted;
5905 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5906 * response (if it exists) and X509v3 extensions in the certificate.
5907 * Returns NULL if an error occurs.
5909 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5911 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5916 if (!sc->scts_parsed) {
5917 if (ct_extract_tls_extension_scts(sc) < 0 ||
5918 ct_extract_ocsp_response_scts(sc) < 0 ||
5919 ct_extract_x509v3_extension_scts(sc) < 0)
5922 sc->scts_parsed = 1;
5929 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5930 const STACK_OF(SCT) *scts, void *unused_arg)
5935 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5936 const STACK_OF(SCT) *scts, void *unused_arg)
5938 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5941 for (i = 0; i < count; ++i) {
5942 SCT *sct = sk_SCT_value(scts, i);
5943 int status = SCT_get_validation_status(sct);
5945 if (status == SCT_VALIDATION_STATUS_VALID)
5948 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5952 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5955 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5961 * Since code exists that uses the custom extension handler for CT, look
5962 * for this and throw an error if they have already registered to use CT.
5964 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5965 TLSEXT_TYPE_signed_certificate_timestamp))
5967 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5971 if (callback != NULL) {
5973 * If we are validating CT, then we MUST accept SCTs served via OCSP
5975 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5979 sc->ct_validation_callback = callback;
5980 sc->ct_validation_callback_arg = arg;
5985 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5986 ssl_ct_validation_cb callback, void *arg)
5989 * Since code exists that uses the custom extension handler for CT, look for
5990 * this and throw an error if they have already registered to use CT.
5992 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5993 TLSEXT_TYPE_signed_certificate_timestamp))
5995 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5999 ctx->ct_validation_callback = callback;
6000 ctx->ct_validation_callback_arg = arg;
6004 int SSL_ct_is_enabled(const SSL *s)
6006 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6011 return sc->ct_validation_callback != NULL;
6014 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6016 return ctx->ct_validation_callback != NULL;
6019 int ssl_validate_ct(SSL_CONNECTION *s)
6022 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6024 SSL_DANE *dane = &s->dane;
6025 CT_POLICY_EVAL_CTX *ctx = NULL;
6026 const STACK_OF(SCT) *scts;
6029 * If no callback is set, the peer is anonymous, or its chain is invalid,
6030 * skip SCT validation - just return success. Applications that continue
6031 * handshakes without certificates, with unverified chains, or pinned leaf
6032 * certificates are outside the scope of the WebPKI and CT.
6034 * The above exclusions notwithstanding the vast majority of peers will
6035 * have rather ordinary certificate chains validated by typical
6036 * applications that perform certificate verification and therefore will
6037 * process SCTs when enabled.
6039 if (s->ct_validation_callback == NULL || cert == NULL ||
6040 s->verify_result != X509_V_OK ||
6041 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6045 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6046 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6048 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6049 switch (dane->mtlsa->usage) {
6050 case DANETLS_USAGE_DANE_TA:
6051 case DANETLS_USAGE_DANE_EE:
6056 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6057 SSL_CONNECTION_GET_CTX(s)->propq);
6059 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6063 issuer = sk_X509_value(s->verified_chain, 1);
6064 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6065 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6066 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6067 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6068 CT_POLICY_EVAL_CTX_set_time(
6069 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6071 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6074 * This function returns success (> 0) only when all the SCTs are valid, 0
6075 * when some are invalid, and < 0 on various internal errors (out of
6076 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6077 * reason to abort the handshake, that decision is up to the callback.
6078 * Therefore, we error out only in the unexpected case that the return
6079 * value is negative.
6081 * XXX: One might well argue that the return value of this function is an
6082 * unfortunate design choice. Its job is only to determine the validation
6083 * status of each of the provided SCTs. So long as it correctly separates
6084 * the wheat from the chaff it should return success. Failure in this case
6085 * ought to correspond to an inability to carry out its duties.
6087 if (SCT_LIST_validate(scts, ctx) < 0) {
6088 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6092 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6094 ret = 0; /* This function returns 0 on failure */
6096 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6099 CT_POLICY_EVAL_CTX_free(ctx);
6101 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6102 * failure return code here. Also the application may wish the complete
6103 * the handshake, and then disconnect cleanly at a higher layer, after
6104 * checking the verification status of the completed connection.
6106 * We therefore force a certificate verification failure which will be
6107 * visible via SSL_get_verify_result() and cached as part of any resumed
6110 * Note: the permissive callback is for information gathering only, always
6111 * returns success, and does not affect verification status. Only the
6112 * strict callback or a custom application-specified callback can trigger
6113 * connection failure or record a verification error.
6116 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6120 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6122 switch (validation_mode) {
6124 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6126 case SSL_CT_VALIDATION_PERMISSIVE:
6127 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6128 case SSL_CT_VALIDATION_STRICT:
6129 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6133 int SSL_enable_ct(SSL *s, int validation_mode)
6135 switch (validation_mode) {
6137 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6139 case SSL_CT_VALIDATION_PERMISSIVE:
6140 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6141 case SSL_CT_VALIDATION_STRICT:
6142 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6146 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6148 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6151 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6153 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6156 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6158 CTLOG_STORE_free(ctx->ctlog_store);
6159 ctx->ctlog_store = logs;
6162 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6164 return ctx->ctlog_store;
6167 #endif /* OPENSSL_NO_CT */
6169 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6172 c->client_hello_cb = cb;
6173 c->client_hello_cb_arg = arg;
6176 int SSL_client_hello_isv2(SSL *s)
6178 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6183 if (sc->clienthello == NULL)
6185 return sc->clienthello->isv2;
6188 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6190 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6195 if (sc->clienthello == NULL)
6197 return sc->clienthello->legacy_version;
6200 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6202 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6207 if (sc->clienthello == NULL)
6210 *out = sc->clienthello->random;
6211 return SSL3_RANDOM_SIZE;
6214 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6216 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6221 if (sc->clienthello == NULL)
6224 *out = sc->clienthello->session_id;
6225 return sc->clienthello->session_id_len;
6228 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6230 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6235 if (sc->clienthello == NULL)
6238 *out = PACKET_data(&sc->clienthello->ciphersuites);
6239 return PACKET_remaining(&sc->clienthello->ciphersuites);
6242 size_t SSL_client_hello_get0_compression_methods(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->compressions;
6253 return sc->clienthello->compressions_len;
6256 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6261 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6266 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6268 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6269 ext = sc->clienthello->pre_proc_exts + i;
6278 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6280 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6281 ext = sc->clienthello->pre_proc_exts + i;
6283 if (ext->received_order >= num)
6285 present[ext->received_order] = ext->type;
6292 OPENSSL_free(present);
6296 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6300 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6305 if (sc->clienthello == NULL || num_exts == NULL)
6307 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6308 ext = sc->clienthello->pre_proc_exts + i;
6320 if (*num_exts < num)
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 exts[ext->received_order] = ext->type;
6334 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6339 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6344 if (sc->clienthello == NULL)
6346 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6347 r = sc->clienthello->pre_proc_exts + i;
6348 if (r->present && r->type == type) {
6350 *out = PACKET_data(&r->data);
6352 *outlen = PACKET_remaining(&r->data);
6359 int SSL_free_buffers(SSL *ssl)
6362 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6369 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6372 RECORD_LAYER_release(rl);
6376 int SSL_alloc_buffers(SSL *ssl)
6378 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6383 /* TODO(RECLAYER): Need a way to make this happen in the record layer */
6387 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6389 ctx->keylog_callback = cb;
6392 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6394 return ctx->keylog_callback;
6397 static int nss_keylog_int(const char *prefix,
6399 const uint8_t *parameter_1,
6400 size_t parameter_1_len,
6401 const uint8_t *parameter_2,
6402 size_t parameter_2_len)
6405 char *cursor = NULL;
6409 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6411 if (sctx->keylog_callback == NULL)
6415 * Our output buffer will contain the following strings, rendered with
6416 * space characters in between, terminated by a NULL character: first the
6417 * prefix, then the first parameter, then the second parameter. The
6418 * meaning of each parameter depends on the specific key material being
6419 * logged. Note that the first and second parameters are encoded in
6420 * hexadecimal, so we need a buffer that is twice their lengths.
6422 prefix_len = strlen(prefix);
6423 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6424 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6427 strcpy(cursor, prefix);
6428 cursor += prefix_len;
6431 for (i = 0; i < parameter_1_len; i++) {
6432 sprintf(cursor, "%02x", parameter_1[i]);
6437 for (i = 0; i < parameter_2_len; i++) {
6438 sprintf(cursor, "%02x", parameter_2[i]);
6443 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6444 OPENSSL_clear_free(out, out_len);
6449 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6450 const uint8_t *encrypted_premaster,
6451 size_t encrypted_premaster_len,
6452 const uint8_t *premaster,
6453 size_t premaster_len)
6455 if (encrypted_premaster_len < 8) {
6456 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6460 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6461 return nss_keylog_int("RSA",
6463 encrypted_premaster,
6469 int ssl_log_secret(SSL_CONNECTION *sc,
6471 const uint8_t *secret,
6474 return nss_keylog_int(label,
6476 sc->s3.client_random,
6482 #define SSLV2_CIPHER_LEN 3
6484 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6488 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6490 if (PACKET_remaining(cipher_suites) == 0) {
6491 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6495 if (PACKET_remaining(cipher_suites) % n != 0) {
6496 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6500 OPENSSL_free(s->s3.tmp.ciphers_raw);
6501 s->s3.tmp.ciphers_raw = NULL;
6502 s->s3.tmp.ciphers_rawlen = 0;
6505 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6506 PACKET sslv2ciphers = *cipher_suites;
6507 unsigned int leadbyte;
6511 * We store the raw ciphers list in SSLv3+ format so we need to do some
6512 * preprocessing to convert the list first. If there are any SSLv2 only
6513 * ciphersuites with a non-zero leading byte then we are going to
6514 * slightly over allocate because we won't store those. But that isn't a
6517 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6518 s->s3.tmp.ciphers_raw = raw;
6520 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6523 for (s->s3.tmp.ciphers_rawlen = 0;
6524 PACKET_remaining(&sslv2ciphers) > 0;
6525 raw += TLS_CIPHER_LEN) {
6526 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6528 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6531 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6532 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6533 OPENSSL_free(s->s3.tmp.ciphers_raw);
6534 s->s3.tmp.ciphers_raw = NULL;
6535 s->s3.tmp.ciphers_rawlen = 0;
6539 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6541 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6542 &s->s3.tmp.ciphers_rawlen)) {
6543 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6549 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6550 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6551 STACK_OF(SSL_CIPHER) **scsvs)
6554 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6559 if (!PACKET_buf_init(&pkt, bytes, len))
6561 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6564 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6565 STACK_OF(SSL_CIPHER) **skp,
6566 STACK_OF(SSL_CIPHER) **scsvs_out,
6567 int sslv2format, int fatal)
6569 const SSL_CIPHER *c;
6570 STACK_OF(SSL_CIPHER) *sk = NULL;
6571 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6573 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6574 unsigned char cipher[SSLV2_CIPHER_LEN];
6576 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6578 if (PACKET_remaining(cipher_suites) == 0) {
6580 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6582 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6586 if (PACKET_remaining(cipher_suites) % n != 0) {
6588 SSLfatal(s, SSL_AD_DECODE_ERROR,
6589 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6591 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6595 sk = sk_SSL_CIPHER_new_null();
6596 scsvs = sk_SSL_CIPHER_new_null();
6597 if (sk == NULL || scsvs == NULL) {
6599 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6601 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6605 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6607 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6608 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6609 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6611 if (sslv2format && cipher[0] != '\0')
6614 /* For SSLv2-compat, ignore leading 0-byte. */
6615 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6617 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6618 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6620 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6622 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6627 if (PACKET_remaining(cipher_suites) > 0) {
6629 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6631 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6638 sk_SSL_CIPHER_free(sk);
6639 if (scsvs_out != NULL)
6642 sk_SSL_CIPHER_free(scsvs);
6645 sk_SSL_CIPHER_free(sk);
6646 sk_SSL_CIPHER_free(scsvs);
6650 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6652 ctx->max_early_data = max_early_data;
6657 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6659 return ctx->max_early_data;
6662 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6664 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6669 sc->max_early_data = max_early_data;
6674 uint32_t SSL_get_max_early_data(const SSL *s)
6676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6681 return sc->max_early_data;
6684 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6686 ctx->recv_max_early_data = recv_max_early_data;
6691 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6693 return ctx->recv_max_early_data;
6696 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6698 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6703 sc->recv_max_early_data = recv_max_early_data;
6708 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6710 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6715 return sc->recv_max_early_data;
6718 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6720 /* Return any active Max Fragment Len extension */
6721 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6722 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6724 /* return current SSL connection setting */
6725 return sc->max_send_fragment;
6728 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6730 /* Return a value regarding an active Max Fragment Len extension */
6731 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6732 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6733 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6735 /* else limit |split_send_fragment| to current |max_send_fragment| */
6736 if (sc->split_send_fragment > sc->max_send_fragment)
6737 return sc->max_send_fragment;
6739 /* return current SSL connection setting */
6740 return sc->split_send_fragment;
6743 int SSL_stateless(SSL *s)
6746 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6748 /* TODO(QUIC): This will need further work. */
6752 /* Ensure there is no state left over from a previous invocation */
6758 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6759 ret = SSL_accept(s);
6760 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6762 if (ret > 0 && sc->ext.cookieok)
6765 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6771 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6773 ctx->pha_enabled = val;
6776 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6778 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6783 sc->pha_enabled = val;
6786 int SSL_verify_client_post_handshake(SSL *ssl)
6788 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6793 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6794 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6798 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6802 if (!SSL_is_init_finished(ssl)) {
6803 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6807 switch (sc->post_handshake_auth) {
6809 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6812 case SSL_PHA_EXT_SENT:
6813 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6815 case SSL_PHA_EXT_RECEIVED:
6817 case SSL_PHA_REQUEST_PENDING:
6818 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6820 case SSL_PHA_REQUESTED:
6821 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6825 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6827 /* checks verify_mode and algorithm_auth */
6828 if (!send_certificate_request(sc)) {
6829 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6830 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6834 ossl_statem_set_in_init(sc, 1);
6838 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6839 SSL_CTX_generate_session_ticket_fn gen_cb,
6840 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6843 ctx->generate_ticket_cb = gen_cb;
6844 ctx->decrypt_ticket_cb = dec_cb;
6845 ctx->ticket_cb_data = arg;
6849 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6850 SSL_allow_early_data_cb_fn cb,
6853 ctx->allow_early_data_cb = cb;
6854 ctx->allow_early_data_cb_data = arg;
6857 void SSL_set_allow_early_data_cb(SSL *s,
6858 SSL_allow_early_data_cb_fn cb,
6861 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6866 sc->allow_early_data_cb = cb;
6867 sc->allow_early_data_cb_data = arg;
6870 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6872 const char *properties)
6874 const EVP_CIPHER *ciph;
6876 ciph = tls_get_cipher_from_engine(nid);
6881 * If there is no engine cipher then we do an explicit fetch. This may fail
6882 * and that could be ok
6885 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6891 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6893 /* Don't up-ref an implicit EVP_CIPHER */
6894 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6898 * The cipher was explicitly fetched and therefore it is safe to cast
6901 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6904 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6909 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6911 * The cipher was explicitly fetched and therefore it is safe to cast
6914 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6918 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6920 const char *properties)
6924 md = tls_get_digest_from_engine(nid);
6928 /* Otherwise we do an explicit fetch */
6930 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6935 int ssl_evp_md_up_ref(const EVP_MD *md)
6937 /* Don't up-ref an implicit EVP_MD */
6938 if (EVP_MD_get0_provider(md) == NULL)
6942 * The digest was explicitly fetched and therefore it is safe to cast
6945 return EVP_MD_up_ref((EVP_MD *)md);
6948 void ssl_evp_md_free(const EVP_MD *md)
6953 if (EVP_MD_get0_provider(md) != NULL) {
6955 * The digest was explicitly fetched and therefore it is safe to cast
6958 EVP_MD_free((EVP_MD *)md);
6962 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6964 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6969 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6970 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6971 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6974 EVP_PKEY_free(sc->cert->dh_tmp);
6975 sc->cert->dh_tmp = dhpkey;
6979 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6981 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6982 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6983 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6986 EVP_PKEY_free(ctx->cert->dh_tmp);
6987 ctx->cert->dh_tmp = dhpkey;