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 BIO_free_all(s->wbio);
1360 BIO_free_all(s->rbio);
1363 BUF_MEM_free(s->init_buf);
1365 /* add extra stuff */
1366 sk_SSL_CIPHER_free(s->cipher_list);
1367 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1368 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1369 sk_SSL_CIPHER_free(s->peer_ciphers);
1371 /* Make the next call work :-) */
1372 if (s->session != NULL) {
1373 ssl_clear_bad_session(s);
1374 SSL_SESSION_free(s->session);
1376 SSL_SESSION_free(s->psksession);
1377 OPENSSL_free(s->psksession_id);
1381 ssl_cert_free(s->cert);
1382 OPENSSL_free(s->shared_sigalgs);
1383 /* Free up if allocated */
1385 OPENSSL_free(s->ext.hostname);
1386 SSL_CTX_free(s->session_ctx);
1387 OPENSSL_free(s->ext.ecpointformats);
1388 OPENSSL_free(s->ext.peer_ecpointformats);
1389 OPENSSL_free(s->ext.supportedgroups);
1390 OPENSSL_free(s->ext.peer_supportedgroups);
1391 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1392 #ifndef OPENSSL_NO_OCSP
1393 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1395 #ifndef OPENSSL_NO_CT
1396 SCT_LIST_free(s->scts);
1397 OPENSSL_free(s->ext.scts);
1399 OPENSSL_free(s->ext.ocsp.resp);
1400 OPENSSL_free(s->ext.alpn);
1401 OPENSSL_free(s->ext.tls13_cookie);
1402 if (s->clienthello != NULL)
1403 OPENSSL_free(s->clienthello->pre_proc_exts);
1404 OPENSSL_free(s->clienthello);
1405 OPENSSL_free(s->pha_context);
1406 EVP_MD_CTX_free(s->pha_dgst);
1408 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1409 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1411 OSSL_STACK_OF_X509_free(s->verified_chain);
1413 if (ssl->method != NULL)
1414 ssl->method->ssl_deinit(ssl);
1416 ASYNC_WAIT_CTX_free(s->waitctx);
1418 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1419 OPENSSL_free(s->ext.npn);
1422 #ifndef OPENSSL_NO_SRTP
1423 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1427 void SSL_set0_rbio(SSL *s, BIO *rbio)
1429 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1434 BIO_free_all(sc->rbio);
1436 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1439 void SSL_set0_wbio(SSL *s, BIO *wbio)
1441 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1447 * If the output buffering BIO is still in place, remove it
1449 if (sc->bbio != NULL)
1450 sc->wbio = BIO_pop(sc->wbio);
1452 BIO_free_all(sc->wbio);
1455 /* Re-attach |bbio| to the new |wbio|. */
1456 if (sc->bbio != NULL)
1457 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1459 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1462 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1465 * For historical reasons, this function has many different cases in
1466 * ownership handling.
1469 /* If nothing has changed, do nothing */
1470 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1474 * If the two arguments are equal then one fewer reference is granted by the
1475 * caller than we want to take
1477 if (rbio != NULL && rbio == wbio)
1481 * If only the wbio is changed only adopt one reference.
1483 if (rbio == SSL_get_rbio(s)) {
1484 SSL_set0_wbio(s, wbio);
1488 * There is an asymmetry here for historical reasons. If only the rbio is
1489 * changed AND the rbio and wbio were originally different, then we only
1490 * adopt one reference.
1492 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1493 SSL_set0_rbio(s, rbio);
1497 /* Otherwise, adopt both references. */
1498 SSL_set0_rbio(s, rbio);
1499 SSL_set0_wbio(s, wbio);
1502 BIO *SSL_get_rbio(const SSL *s)
1504 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1512 BIO *SSL_get_wbio(const SSL *s)
1514 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1519 if (sc->bbio != NULL) {
1521 * If |bbio| is active, the true caller-configured BIO is its
1524 return BIO_next(sc->bbio);
1529 int SSL_get_fd(const SSL *s)
1531 return SSL_get_rfd(s);
1534 int SSL_get_rfd(const SSL *s)
1539 b = SSL_get_rbio(s);
1540 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1542 BIO_get_fd(r, &ret);
1546 int SSL_get_wfd(const SSL *s)
1551 b = SSL_get_wbio(s);
1552 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1554 BIO_get_fd(r, &ret);
1558 #ifndef OPENSSL_NO_SOCK
1559 int SSL_set_fd(SSL *s, int fd)
1564 bio = BIO_new(BIO_s_socket());
1567 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1570 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1571 SSL_set_bio(s, bio, bio);
1572 #ifndef OPENSSL_NO_KTLS
1574 * The new socket is created successfully regardless of ktls_enable.
1575 * ktls_enable doesn't change any functionality of the socket, except
1576 * changing the setsockopt to enable the processing of ktls_start.
1577 * Thus, it is not a problem to call it for non-TLS sockets.
1580 #endif /* OPENSSL_NO_KTLS */
1586 int SSL_set_wfd(SSL *s, int fd)
1588 BIO *rbio = SSL_get_rbio(s);
1590 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1591 || (int)BIO_get_fd(rbio, NULL) != fd) {
1592 BIO *bio = BIO_new(BIO_s_socket());
1595 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1598 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1599 SSL_set0_wbio(s, bio);
1600 #ifndef OPENSSL_NO_KTLS
1602 * The new socket is created successfully regardless of ktls_enable.
1603 * ktls_enable doesn't change any functionality of the socket, except
1604 * changing the setsockopt to enable the processing of ktls_start.
1605 * Thus, it is not a problem to call it for non-TLS sockets.
1608 #endif /* OPENSSL_NO_KTLS */
1611 SSL_set0_wbio(s, rbio);
1616 int SSL_set_rfd(SSL *s, int fd)
1618 BIO *wbio = SSL_get_wbio(s);
1620 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1621 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1622 BIO *bio = BIO_new(BIO_s_socket());
1625 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1628 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1629 SSL_set0_rbio(s, bio);
1632 SSL_set0_rbio(s, wbio);
1639 /* return length of latest Finished message we sent, copy to 'buf' */
1640 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1643 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1648 ret = sc->s3.tmp.finish_md_len;
1651 memcpy(buf, sc->s3.tmp.finish_md, count);
1655 /* return length of latest Finished message we expected, copy to 'buf' */
1656 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1659 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1664 ret = sc->s3.tmp.peer_finish_md_len;
1667 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1671 int SSL_get_verify_mode(const SSL *s)
1673 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1678 return sc->verify_mode;
1681 int SSL_get_verify_depth(const SSL *s)
1683 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1688 return X509_VERIFY_PARAM_get_depth(sc->param);
1691 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1692 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1697 return sc->verify_callback;
1700 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1702 return ctx->verify_mode;
1705 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1707 return X509_VERIFY_PARAM_get_depth(ctx->param);
1710 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1711 return ctx->default_verify_callback;
1714 void SSL_set_verify(SSL *s, int mode,
1715 int (*callback) (int ok, X509_STORE_CTX *ctx))
1717 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1722 sc->verify_mode = mode;
1723 if (callback != NULL)
1724 sc->verify_callback = callback;
1727 void SSL_set_verify_depth(SSL *s, int depth)
1729 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1734 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1737 void SSL_set_read_ahead(SSL *s, int yes)
1739 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1740 OSSL_PARAM options[2], *opts = options;
1745 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1747 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1748 &sc->rlayer.read_ahead);
1749 *opts = OSSL_PARAM_construct_end();
1751 /* Ignore return value */
1752 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1755 int SSL_get_read_ahead(const SSL *s)
1757 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1762 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1765 int SSL_pending(const SSL *s)
1767 size_t pending = s->method->ssl_pending(s);
1770 * SSL_pending cannot work properly if read-ahead is enabled
1771 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1772 * impossible to fix since SSL_pending cannot report errors that may be
1773 * observed while scanning the new data. (Note that SSL_pending() is
1774 * often used as a boolean value, so we'd better not return -1.)
1776 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1777 * we just return INT_MAX.
1779 return pending < INT_MAX ? (int)pending : INT_MAX;
1782 int SSL_has_pending(const SSL *s)
1785 * Similar to SSL_pending() but returns a 1 to indicate that we have
1786 * processed or unprocessed data available or 0 otherwise (as opposed to the
1787 * number of bytes available). Unlike SSL_pending() this will take into
1788 * account read_ahead data. A 1 return simply indicates that we have data.
1789 * That data may not result in any application data, or we may fail to parse
1790 * the records for some reason.
1792 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1794 /* Check buffered app data if any first */
1795 if (SSL_CONNECTION_IS_DTLS(sc)) {
1799 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1800 while ((item = pqueue_next(&iter)) != NULL) {
1802 if (rdata->length > 0)
1807 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1810 return RECORD_LAYER_read_pending(&sc->rlayer);
1813 X509 *SSL_get1_peer_certificate(const SSL *s)
1815 X509 *r = SSL_get0_peer_certificate(s);
1823 X509 *SSL_get0_peer_certificate(const SSL *s)
1825 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1830 if (sc->session == NULL)
1833 return sc->session->peer;
1836 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1839 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1844 if (sc->session == NULL)
1847 r = sc->session->peer_chain;
1850 * If we are a client, cert_chain includes the peer's own certificate; if
1851 * we are a server, it does not.
1858 * Now in theory, since the calling process own 't' it should be safe to
1859 * modify. We need to be able to read f without being hassled
1861 int SSL_copy_session_id(SSL *t, const SSL *f)
1864 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1865 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1866 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1868 if (tsc == NULL || fsc == NULL)
1871 /* Do we need to do SSL locking? */
1872 if (!SSL_set_session(t, SSL_get_session(f))) {
1877 * what if we are setup for one protocol version but want to talk another
1879 if (t->method != f->method) {
1880 t->method->ssl_deinit(t);
1881 t->method = f->method;
1882 if (t->method->ssl_init(t) == 0)
1886 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1887 ssl_cert_free(tsc->cert);
1888 tsc->cert = fsc->cert;
1889 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1896 /* Fix this so it checks all the valid key/cert options */
1897 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1899 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1900 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1903 if (ctx->cert->key->privatekey == NULL) {
1904 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1907 return X509_check_private_key
1908 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1911 /* Fix this function so that it takes an optional type parameter */
1912 int SSL_check_private_key(const SSL *ssl)
1914 const SSL_CONNECTION *sc;
1916 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1917 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1920 if (sc->cert->key->x509 == NULL) {
1921 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1924 if (sc->cert->key->privatekey == NULL) {
1925 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1928 return X509_check_private_key(sc->cert->key->x509,
1929 sc->cert->key->privatekey);
1932 int SSL_waiting_for_async(SSL *s)
1934 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1945 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1947 ASYNC_WAIT_CTX *ctx;
1948 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1953 if ((ctx = sc->waitctx) == NULL)
1955 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1958 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1959 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1961 ASYNC_WAIT_CTX *ctx;
1962 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1967 if ((ctx = sc->waitctx) == NULL)
1969 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1973 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1975 ctx->async_cb = callback;
1979 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1981 ctx->async_cb_arg = arg;
1985 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1987 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1992 sc->async_cb = callback;
1996 int SSL_set_async_callback_arg(SSL *s, void *arg)
1998 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2003 sc->async_cb_arg = arg;
2007 int SSL_get_async_status(SSL *s, int *status)
2009 ASYNC_WAIT_CTX *ctx;
2010 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2015 if ((ctx = sc->waitctx) == NULL)
2017 *status = ASYNC_WAIT_CTX_get_status(ctx);
2021 int SSL_accept(SSL *s)
2023 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2028 if (sc->handshake_func == NULL) {
2029 /* Not properly initialized yet */
2030 SSL_set_accept_state(s);
2033 return SSL_do_handshake(s);
2036 int SSL_connect(SSL *s)
2038 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2043 if (sc->handshake_func == NULL) {
2044 /* Not properly initialized yet */
2045 SSL_set_connect_state(s);
2048 return SSL_do_handshake(s);
2051 long SSL_get_default_timeout(const SSL *s)
2053 return (long int)ossl_time2seconds(s->method->get_timeout());
2056 static int ssl_async_wait_ctx_cb(void *arg)
2058 SSL *s = (SSL *)arg;
2059 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2064 return sc->async_cb(s, sc->async_cb_arg);
2067 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2068 int (*func) (void *))
2071 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2076 if (sc->waitctx == NULL) {
2077 sc->waitctx = ASYNC_WAIT_CTX_new();
2078 if (sc->waitctx == NULL)
2080 if (sc->async_cb != NULL
2081 && !ASYNC_WAIT_CTX_set_callback
2082 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2086 sc->rwstate = SSL_NOTHING;
2087 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2088 sizeof(struct ssl_async_args))) {
2090 sc->rwstate = SSL_NOTHING;
2091 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2094 sc->rwstate = SSL_ASYNC_PAUSED;
2097 sc->rwstate = SSL_ASYNC_NO_JOBS;
2103 sc->rwstate = SSL_NOTHING;
2104 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2105 /* Shouldn't happen */
2110 static int ssl_io_intern(void *vargs)
2112 struct ssl_async_args *args;
2118 args = (struct ssl_async_args *)vargs;
2122 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2125 switch (args->type) {
2127 return args->f.func_read(s, buf, num, &sc->asyncrw);
2129 return args->f.func_write(s, buf, num, &sc->asyncrw);
2131 return args->f.func_other(s);
2136 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2138 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2143 if (sc->handshake_func == NULL) {
2144 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2148 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2149 sc->rwstate = SSL_NOTHING;
2153 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2154 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2155 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2159 * If we are a client and haven't received the ServerHello etc then we
2162 ossl_statem_check_finish_init(sc, 0);
2164 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2165 struct ssl_async_args args;
2171 args.type = READFUNC;
2172 args.f.func_read = s->method->ssl_read;
2174 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2175 *readbytes = sc->asyncrw;
2178 return s->method->ssl_read(s, buf, num, readbytes);
2182 int SSL_read(SSL *s, void *buf, int num)
2188 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2192 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2195 * The cast is safe here because ret should be <= INT_MAX because num is
2199 ret = (int)readbytes;
2204 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2206 int ret = ssl_read_internal(s, buf, num, readbytes);
2213 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2216 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2218 /* TODO(QUIC): This will need special handling for QUIC */
2223 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2224 return SSL_READ_EARLY_DATA_ERROR;
2227 switch (sc->early_data_state) {
2228 case SSL_EARLY_DATA_NONE:
2229 if (!SSL_in_before(s)) {
2230 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2231 return SSL_READ_EARLY_DATA_ERROR;
2235 case SSL_EARLY_DATA_ACCEPT_RETRY:
2236 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2237 ret = SSL_accept(s);
2240 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2241 return SSL_READ_EARLY_DATA_ERROR;
2245 case SSL_EARLY_DATA_READ_RETRY:
2246 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2247 sc->early_data_state = SSL_EARLY_DATA_READING;
2248 ret = SSL_read_ex(s, buf, num, readbytes);
2250 * State machine will update early_data_state to
2251 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2254 if (ret > 0 || (ret <= 0 && sc->early_data_state
2255 != SSL_EARLY_DATA_FINISHED_READING)) {
2256 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2257 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2258 : SSL_READ_EARLY_DATA_ERROR;
2261 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2264 return SSL_READ_EARLY_DATA_FINISH;
2267 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2268 return SSL_READ_EARLY_DATA_ERROR;
2272 int SSL_get_early_data_status(const SSL *s)
2274 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2276 /* TODO(QUIC): This will need special handling for QUIC */
2280 return sc->ext.early_data;
2283 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2285 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2290 if (sc->handshake_func == NULL) {
2291 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2295 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2298 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2299 struct ssl_async_args args;
2305 args.type = READFUNC;
2306 args.f.func_read = s->method->ssl_peek;
2308 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2309 *readbytes = sc->asyncrw;
2312 return s->method->ssl_peek(s, buf, num, readbytes);
2316 int SSL_peek(SSL *s, void *buf, int num)
2322 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2326 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2329 * The cast is safe here because ret should be <= INT_MAX because num is
2333 ret = (int)readbytes;
2339 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2341 int ret = ssl_peek_internal(s, buf, num, readbytes);
2348 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2350 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2355 if (sc->handshake_func == NULL) {
2356 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2360 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2361 sc->rwstate = SSL_NOTHING;
2362 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2366 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2367 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2368 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2369 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2372 /* If we are a client and haven't sent the Finished we better do that */
2373 ossl_statem_check_finish_init(sc, 1);
2375 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2377 struct ssl_async_args args;
2380 args.buf = (void *)buf;
2382 args.type = WRITEFUNC;
2383 args.f.func_write = s->method->ssl_write;
2385 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2386 *written = sc->asyncrw;
2389 return s->method->ssl_write(s, buf, num, written);
2393 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2396 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2401 if (sc->handshake_func == NULL) {
2402 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2406 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2407 sc->rwstate = SSL_NOTHING;
2408 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2412 if (!BIO_get_ktls_send(sc->wbio)) {
2413 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2417 /* If we have an alert to send, lets send it */
2418 if (sc->s3.alert_dispatch) {
2419 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2421 /* SSLfatal() already called if appropriate */
2424 /* if it went, fall through and send more stuff */
2427 sc->rwstate = SSL_WRITING;
2428 if (BIO_flush(sc->wbio) <= 0) {
2429 if (!BIO_should_retry(sc->wbio)) {
2430 sc->rwstate = SSL_NOTHING;
2433 set_sys_error(EAGAIN);
2439 #ifdef OPENSSL_NO_KTLS
2440 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2441 "can't call ktls_sendfile(), ktls disabled");
2444 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2446 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2447 if ((get_last_sys_error() == EAGAIN) ||
2448 (get_last_sys_error() == EINTR) ||
2449 (get_last_sys_error() == EBUSY))
2450 BIO_set_retry_write(sc->wbio);
2453 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2456 sc->rwstate = SSL_NOTHING;
2461 int SSL_write(SSL *s, const void *buf, int num)
2467 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2471 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2474 * The cast is safe here because ret should be <= INT_MAX because num is
2483 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2485 int ret = ssl_write_internal(s, buf, num, written);
2492 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2494 int ret, early_data_state;
2496 uint32_t partialwrite;
2497 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2499 /* TODO(QUIC): This will need special handling for QUIC */
2503 switch (sc->early_data_state) {
2504 case SSL_EARLY_DATA_NONE:
2506 || !SSL_in_before(s)
2507 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2508 && (sc->psk_use_session_cb == NULL))) {
2509 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2514 case SSL_EARLY_DATA_CONNECT_RETRY:
2515 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2516 ret = SSL_connect(s);
2519 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2524 case SSL_EARLY_DATA_WRITE_RETRY:
2525 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2527 * We disable partial write for early data because we don't keep track
2528 * of how many bytes we've written between the SSL_write_ex() call and
2529 * the flush if the flush needs to be retried)
2531 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2532 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2533 ret = SSL_write_ex(s, buf, num, &writtmp);
2534 sc->mode |= partialwrite;
2536 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2539 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2542 case SSL_EARLY_DATA_WRITE_FLUSH:
2543 /* The buffering BIO is still in place so we need to flush it */
2544 if (statem_flush(sc) != 1)
2547 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2550 case SSL_EARLY_DATA_FINISHED_READING:
2551 case SSL_EARLY_DATA_READ_RETRY:
2552 early_data_state = sc->early_data_state;
2553 /* We are a server writing to an unauthenticated client */
2554 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2555 ret = SSL_write_ex(s, buf, num, written);
2556 /* The buffering BIO is still in place */
2558 (void)BIO_flush(sc->wbio);
2559 sc->early_data_state = early_data_state;
2563 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2568 int SSL_shutdown(SSL *s)
2571 * Note that this function behaves differently from what one might
2572 * expect. Return values are 0 for no success (yet), 1 for success; but
2573 * calling it once is usually not enough, even if blocking I/O is used
2574 * (see ssl3_shutdown).
2576 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2581 if (sc->handshake_func == NULL) {
2582 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2586 if (!SSL_in_init(s)) {
2587 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2588 struct ssl_async_args args;
2590 memset(&args, 0, sizeof(args));
2592 args.type = OTHERFUNC;
2593 args.f.func_other = s->method->ssl_shutdown;
2595 return ssl_start_async_job(s, &args, ssl_io_intern);
2597 return s->method->ssl_shutdown(s);
2600 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2605 int SSL_key_update(SSL *s, int updatetype)
2607 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2612 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2613 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2617 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2618 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2619 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2623 if (!SSL_is_init_finished(s)) {
2624 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2628 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2629 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2633 ossl_statem_set_in_init(sc, 1);
2634 sc->key_update = updatetype;
2638 int SSL_get_key_update_type(const SSL *s)
2640 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2645 return sc->key_update;
2649 * Can we accept a renegotiation request? If yes, set the flag and
2650 * return 1 if yes. If not, raise error and return 0.
2652 static int can_renegotiate(const SSL_CONNECTION *sc)
2654 if (SSL_CONNECTION_IS_TLS13(sc)) {
2655 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2659 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2660 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2667 int SSL_renegotiate(SSL *s)
2669 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2674 if (!can_renegotiate(sc))
2677 sc->renegotiate = 1;
2678 sc->new_session = 1;
2679 return s->method->ssl_renegotiate(s);
2682 int SSL_renegotiate_abbreviated(SSL *s)
2684 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2689 if (!can_renegotiate(sc))
2692 sc->renegotiate = 1;
2693 sc->new_session = 0;
2694 return s->method->ssl_renegotiate(s);
2697 int SSL_renegotiate_pending(const SSL *s)
2699 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2705 * becomes true when negotiation is requested; false again once a
2706 * handshake has finished
2708 return (sc->renegotiate != 0);
2711 int SSL_new_session_ticket(SSL *s)
2713 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2718 /* If we are in init because we're sending tickets, okay to send more. */
2719 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2720 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2721 || !SSL_CONNECTION_IS_TLS13(sc))
2723 sc->ext.extra_tickets_expected++;
2724 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2725 ossl_statem_set_in_init(sc, 1);
2729 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2732 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2734 /* TODO(QUIC): Special handling for some ctrls will be needed */
2739 case SSL_CTRL_GET_READ_AHEAD:
2740 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2741 case SSL_CTRL_SET_READ_AHEAD:
2742 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2743 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2746 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2747 sc->msg_callback_arg = parg;
2752 OSSL_PARAM options[2], *opts = options;
2756 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2758 *opts = OSSL_PARAM_construct_end();
2760 /* Ignore return value */
2761 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2765 case SSL_CTRL_CLEAR_MODE:
2766 return (sc->mode &= ~larg);
2767 case SSL_CTRL_GET_MAX_CERT_LIST:
2768 return (long)sc->max_cert_list;
2769 case SSL_CTRL_SET_MAX_CERT_LIST:
2772 l = (long)sc->max_cert_list;
2773 sc->max_cert_list = (size_t)larg;
2775 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2776 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2778 #ifndef OPENSSL_NO_KTLS
2779 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2781 #endif /* OPENSSL_NO_KTLS */
2782 sc->max_send_fragment = larg;
2783 if (sc->max_send_fragment < sc->split_send_fragment)
2784 sc->split_send_fragment = sc->max_send_fragment;
2785 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2787 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2788 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2790 sc->split_send_fragment = larg;
2792 case SSL_CTRL_SET_MAX_PIPELINES:
2793 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2795 sc->max_pipelines = larg;
2796 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2797 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2799 case SSL_CTRL_GET_RI_SUPPORT:
2800 return sc->s3.send_connection_binding;
2801 case SSL_CTRL_SET_RETRY_VERIFY:
2802 sc->rwstate = SSL_RETRY_VERIFY;
2804 case SSL_CTRL_CERT_FLAGS:
2805 return (sc->cert->cert_flags |= larg);
2806 case SSL_CTRL_CLEAR_CERT_FLAGS:
2807 return (sc->cert->cert_flags &= ~larg);
2809 case SSL_CTRL_GET_RAW_CIPHERLIST:
2811 if (sc->s3.tmp.ciphers_raw == NULL)
2813 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2814 return (int)sc->s3.tmp.ciphers_rawlen;
2816 return TLS_CIPHER_LEN;
2818 case SSL_CTRL_GET_EXTMS_SUPPORT:
2819 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2821 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2825 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2826 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2827 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2828 &sc->min_proto_version);
2829 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2830 return sc->min_proto_version;
2831 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2832 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2833 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2834 &sc->max_proto_version);
2835 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2836 return sc->max_proto_version;
2838 return s->method->ssl_ctrl(s, cmd, larg, parg);
2842 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2844 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2850 case SSL_CTRL_SET_MSG_CALLBACK:
2851 sc->msg_callback = (void (*)
2852 (int write_p, int version, int content_type,
2853 const void *buf, size_t len, SSL *ssl,
2858 return s->method->ssl_callback_ctrl(s, cmd, fp);
2862 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2864 return ctx->sessions;
2867 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2871 if (ssl_tsan_lock(ctx)) {
2872 res = tsan_load(stat);
2873 ssl_tsan_unlock(ctx);
2878 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2881 /* For some cases with ctx == NULL perform syntax checks */
2884 case SSL_CTRL_SET_GROUPS_LIST:
2885 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2886 case SSL_CTRL_SET_SIGALGS_LIST:
2887 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2888 return tls1_set_sigalgs_list(NULL, parg, 0);
2895 case SSL_CTRL_GET_READ_AHEAD:
2896 return ctx->read_ahead;
2897 case SSL_CTRL_SET_READ_AHEAD:
2898 l = ctx->read_ahead;
2899 ctx->read_ahead = larg;
2902 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2903 ctx->msg_callback_arg = parg;
2906 case SSL_CTRL_GET_MAX_CERT_LIST:
2907 return (long)ctx->max_cert_list;
2908 case SSL_CTRL_SET_MAX_CERT_LIST:
2911 l = (long)ctx->max_cert_list;
2912 ctx->max_cert_list = (size_t)larg;
2915 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2918 l = (long)ctx->session_cache_size;
2919 ctx->session_cache_size = (size_t)larg;
2921 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2922 return (long)ctx->session_cache_size;
2923 case SSL_CTRL_SET_SESS_CACHE_MODE:
2924 l = ctx->session_cache_mode;
2925 ctx->session_cache_mode = larg;
2927 case SSL_CTRL_GET_SESS_CACHE_MODE:
2928 return ctx->session_cache_mode;
2930 case SSL_CTRL_SESS_NUMBER:
2931 return lh_SSL_SESSION_num_items(ctx->sessions);
2932 case SSL_CTRL_SESS_CONNECT:
2933 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2934 case SSL_CTRL_SESS_CONNECT_GOOD:
2935 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2936 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2937 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2938 case SSL_CTRL_SESS_ACCEPT:
2939 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2940 case SSL_CTRL_SESS_ACCEPT_GOOD:
2941 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2942 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2943 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2944 case SSL_CTRL_SESS_HIT:
2945 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2946 case SSL_CTRL_SESS_CB_HIT:
2947 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2948 case SSL_CTRL_SESS_MISSES:
2949 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2950 case SSL_CTRL_SESS_TIMEOUTS:
2951 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2952 case SSL_CTRL_SESS_CACHE_FULL:
2953 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2955 return (ctx->mode |= larg);
2956 case SSL_CTRL_CLEAR_MODE:
2957 return (ctx->mode &= ~larg);
2958 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2959 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2961 ctx->max_send_fragment = larg;
2962 if (ctx->max_send_fragment < ctx->split_send_fragment)
2963 ctx->split_send_fragment = ctx->max_send_fragment;
2965 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2966 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2968 ctx->split_send_fragment = larg;
2970 case SSL_CTRL_SET_MAX_PIPELINES:
2971 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2973 ctx->max_pipelines = larg;
2975 case SSL_CTRL_CERT_FLAGS:
2976 return (ctx->cert->cert_flags |= larg);
2977 case SSL_CTRL_CLEAR_CERT_FLAGS:
2978 return (ctx->cert->cert_flags &= ~larg);
2979 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2980 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2981 && ssl_set_version_bound(ctx->method->version, (int)larg,
2982 &ctx->min_proto_version);
2983 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2984 return ctx->min_proto_version;
2985 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2986 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2987 && ssl_set_version_bound(ctx->method->version, (int)larg,
2988 &ctx->max_proto_version);
2989 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2990 return ctx->max_proto_version;
2992 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2996 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2999 case SSL_CTRL_SET_MSG_CALLBACK:
3000 ctx->msg_callback = (void (*)
3001 (int write_p, int version, int content_type,
3002 const void *buf, size_t len, SSL *ssl,
3007 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3011 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3020 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3021 const SSL_CIPHER *const *bp)
3023 if ((*ap)->id > (*bp)->id)
3025 if ((*ap)->id < (*bp)->id)
3031 * return a STACK of the ciphers available for the SSL and in order of
3034 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3036 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3039 if (sc->cipher_list != NULL) {
3040 return sc->cipher_list;
3041 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3042 return s->ctx->cipher_list;
3048 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3050 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3052 if (sc == NULL || !sc->server)
3054 return sc->peer_ciphers;
3057 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3059 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3066 ciphers = SSL_get_ciphers(s);
3069 if (!ssl_set_client_disabled(sc))
3071 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3072 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3073 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3075 sk = sk_SSL_CIPHER_new_null();
3078 if (!sk_SSL_CIPHER_push(sk, c)) {
3079 sk_SSL_CIPHER_free(sk);
3087 /** return a STACK of the ciphers available for the SSL and in order of
3089 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3092 if (s->cipher_list_by_id != NULL)
3093 return s->cipher_list_by_id;
3094 else if (s->ssl.ctx != NULL
3095 && s->ssl.ctx->cipher_list_by_id != NULL)
3096 return s->ssl.ctx->cipher_list_by_id;
3101 /** The old interface to get the same thing as SSL_get_ciphers() */
3102 const char *SSL_get_cipher_list(const SSL *s, int n)
3104 const SSL_CIPHER *c;
3105 STACK_OF(SSL_CIPHER) *sk;
3109 sk = SSL_get_ciphers(s);
3110 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3112 c = sk_SSL_CIPHER_value(sk, n);
3118 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3120 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3123 return ctx->cipher_list;
3128 * Distinguish between ciphers controlled by set_ciphersuite() and
3129 * set_cipher_list() when counting.
3131 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3134 const SSL_CIPHER *c;
3138 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3139 c = sk_SSL_CIPHER_value(sk, i);
3140 if (c->min_tls >= TLS1_3_VERSION)
3147 /** specify the ciphers to be used by default by the SSL_CTX */
3148 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3150 STACK_OF(SSL_CIPHER) *sk;
3152 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3153 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3156 * ssl_create_cipher_list may return an empty stack if it was unable to
3157 * find a cipher matching the given rule string (for example if the rule
3158 * string specifies a cipher which has been disabled). This is not an
3159 * error as far as ssl_create_cipher_list is concerned, and hence
3160 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3164 else if (cipher_list_tls12_num(sk) == 0) {
3165 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3171 /** specify the ciphers to be used by the SSL */
3172 int SSL_set_cipher_list(SSL *s, const char *str)
3174 STACK_OF(SSL_CIPHER) *sk;
3175 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3180 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3181 &sc->cipher_list, &sc->cipher_list_by_id, str,
3183 /* see comment in SSL_CTX_set_cipher_list */
3186 else if (cipher_list_tls12_num(sk) == 0) {
3187 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3193 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3196 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3197 const SSL_CIPHER *c;
3199 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3205 || sc->peer_ciphers == NULL
3210 clntsk = sc->peer_ciphers;
3211 srvrsk = SSL_get_ciphers(s);
3212 if (clntsk == NULL || srvrsk == NULL)
3215 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3218 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3221 c = sk_SSL_CIPHER_value(clntsk, i);
3222 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3225 n = strlen(c->name);
3242 * Return the requested servername (SNI) value. Note that the behaviour varies
3244 * - whether this is called by the client or the server,
3245 * - if we are before or during/after the handshake,
3246 * - if a resumption or normal handshake is being attempted/has occurred
3247 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3249 * Note that only the host_name type is defined (RFC 3546).
3251 const char *SSL_get_servername(const SSL *s, const int type)
3253 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3260 * If we don't know if we are the client or the server yet then we assume
3263 server = sc->handshake_func == NULL ? 0 : sc->server;
3265 if (type != TLSEXT_NAMETYPE_host_name)
3271 * In TLSv1.3 on the server SNI is not associated with the session
3272 * but in TLSv1.2 or below it is.
3274 * Before the handshake:
3277 * During/after the handshake (TLSv1.2 or below resumption occurred):
3278 * - If a servername was accepted by the server in the original
3279 * handshake then it will return that servername, or NULL otherwise.
3281 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3282 * - The function will return the servername requested by the client in
3283 * this handshake or NULL if none was requested.
3285 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3286 return sc->session->ext.hostname;
3291 * Before the handshake:
3292 * - If a servername has been set via a call to
3293 * SSL_set_tlsext_host_name() then it will return that servername
3294 * - If one has not been set, but a TLSv1.2 resumption is being
3295 * attempted and the session from the original handshake had a
3296 * servername accepted by the server then it will return that
3298 * - Otherwise it returns NULL
3300 * During/after the handshake (TLSv1.2 or below resumption occurred):
3301 * - If the session from the original handshake had a servername accepted
3302 * by the server then it will return that servername.
3303 * - Otherwise it returns the servername set via
3304 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3306 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3307 * - It will return the servername set via SSL_set_tlsext_host_name()
3308 * (or NULL if it was not called).
3310 if (SSL_in_before(s)) {
3311 if (sc->ext.hostname == NULL
3312 && sc->session != NULL
3313 && sc->session->ssl_version != TLS1_3_VERSION)
3314 return sc->session->ext.hostname;
3316 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3317 && sc->session->ext.hostname != NULL)
3318 return sc->session->ext.hostname;
3322 return sc->ext.hostname;
3325 int SSL_get_servername_type(const SSL *s)
3327 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3328 return TLSEXT_NAMETYPE_host_name;
3333 * SSL_select_next_proto implements the standard protocol selection. It is
3334 * expected that this function is called from the callback set by
3335 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3336 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3337 * not included in the length. A byte string of length 0 is invalid. No byte
3338 * string may be truncated. The current, but experimental algorithm for
3339 * selecting the protocol is: 1) If the server doesn't support NPN then this
3340 * is indicated to the callback. In this case, the client application has to
3341 * abort the connection or have a default application level protocol. 2) If
3342 * the server supports NPN, but advertises an empty list then the client
3343 * selects the first protocol in its list, but indicates via the API that this
3344 * fallback case was enacted. 3) Otherwise, the client finds the first
3345 * protocol in the server's list that it supports and selects this protocol.
3346 * This is because it's assumed that the server has better information about
3347 * which protocol a client should use. 4) If the client doesn't support any
3348 * of the server's advertised protocols, then this is treated the same as
3349 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3350 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3352 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3353 const unsigned char *server,
3354 unsigned int server_len,
3355 const unsigned char *client, unsigned int client_len)
3358 const unsigned char *result;
3359 int status = OPENSSL_NPN_UNSUPPORTED;
3362 * For each protocol in server preference order, see if we support it.
3364 for (i = 0; i < server_len;) {
3365 for (j = 0; j < client_len;) {
3366 if (server[i] == client[j] &&
3367 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3368 /* We found a match */
3369 result = &server[i];
3370 status = OPENSSL_NPN_NEGOTIATED;
3380 /* There's no overlap between our protocols and the server's list. */
3382 status = OPENSSL_NPN_NO_OVERLAP;
3385 *out = (unsigned char *)result + 1;
3386 *outlen = result[0];
3390 #ifndef OPENSSL_NO_NEXTPROTONEG
3392 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3393 * client's requested protocol for this connection and returns 0. If the
3394 * client didn't request any protocol, then *data is set to NULL. Note that
3395 * the client can request any protocol it chooses. The value returned from
3396 * this function need not be a member of the list of supported protocols
3397 * provided by the callback.
3399 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3402 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3405 /* We have no other way to indicate error */
3411 *data = sc->ext.npn;
3412 if (*data == NULL) {
3415 *len = (unsigned int)sc->ext.npn_len;
3420 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3421 * a TLS server needs a list of supported protocols for Next Protocol
3422 * Negotiation. The returned list must be in wire format. The list is
3423 * returned by setting |out| to point to it and |outlen| to its length. This
3424 * memory will not be modified, but one should assume that the SSL* keeps a
3425 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3426 * wishes to advertise. Otherwise, no such extension will be included in the
3429 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3430 SSL_CTX_npn_advertised_cb_func cb,
3433 ctx->ext.npn_advertised_cb = cb;
3434 ctx->ext.npn_advertised_cb_arg = arg;
3438 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3439 * client needs to select a protocol from the server's provided list. |out|
3440 * must be set to point to the selected protocol (which may be within |in|).
3441 * The length of the protocol name must be written into |outlen|. The
3442 * server's advertised protocols are provided in |in| and |inlen|. The
3443 * callback can assume that |in| is syntactically valid. The client must
3444 * select a protocol. It is fatal to the connection if this callback returns
3445 * a value other than SSL_TLSEXT_ERR_OK.
3447 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3448 SSL_CTX_npn_select_cb_func cb,
3451 ctx->ext.npn_select_cb = cb;
3452 ctx->ext.npn_select_cb_arg = arg;
3456 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3460 if (protos_len < 2 || protos == NULL)
3463 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3464 if (protos[idx] == 0)
3467 return idx == protos_len;
3470 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3471 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3472 * length-prefixed strings). Returns 0 on success.
3474 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3475 unsigned int protos_len)
3477 unsigned char *alpn;
3479 if (protos_len == 0 || protos == NULL) {
3480 OPENSSL_free(ctx->ext.alpn);
3481 ctx->ext.alpn = NULL;
3482 ctx->ext.alpn_len = 0;
3485 /* Not valid per RFC */
3486 if (!alpn_value_ok(protos, protos_len))
3489 alpn = OPENSSL_memdup(protos, protos_len);
3492 OPENSSL_free(ctx->ext.alpn);
3493 ctx->ext.alpn = alpn;
3494 ctx->ext.alpn_len = protos_len;
3500 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3501 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3502 * length-prefixed strings). Returns 0 on success.
3504 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3505 unsigned int protos_len)
3507 unsigned char *alpn;
3508 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3513 if (protos_len == 0 || protos == NULL) {
3514 OPENSSL_free(sc->ext.alpn);
3515 sc->ext.alpn = NULL;
3516 sc->ext.alpn_len = 0;
3519 /* Not valid per RFC */
3520 if (!alpn_value_ok(protos, protos_len))
3523 alpn = OPENSSL_memdup(protos, protos_len);
3526 OPENSSL_free(sc->ext.alpn);
3527 sc->ext.alpn = alpn;
3528 sc->ext.alpn_len = protos_len;
3534 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3535 * called during ClientHello processing in order to select an ALPN protocol
3536 * from the client's list of offered protocols.
3538 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3539 SSL_CTX_alpn_select_cb_func cb,
3542 ctx->ext.alpn_select_cb = cb;
3543 ctx->ext.alpn_select_cb_arg = arg;
3547 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3548 * On return it sets |*data| to point to |*len| bytes of protocol name
3549 * (not including the leading length-prefix byte). If the server didn't
3550 * respond with a negotiated protocol then |*len| will be zero.
3552 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3555 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3558 /* We have no other way to indicate error */
3564 *data = sc->s3.alpn_selected;
3568 *len = (unsigned int)sc->s3.alpn_selected_len;
3571 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3572 const char *label, size_t llen,
3573 const unsigned char *context, size_t contextlen,
3576 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3581 if (sc->session == NULL
3582 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3585 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3587 contextlen, use_context);
3590 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3591 const char *label, size_t llen,
3592 const unsigned char *context,
3595 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3600 if (sc->version != TLS1_3_VERSION)
3603 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3604 context, contextlen);
3607 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3609 const unsigned char *session_id = a->session_id;
3611 unsigned char tmp_storage[4];
3613 if (a->session_id_length < sizeof(tmp_storage)) {
3614 memset(tmp_storage, 0, sizeof(tmp_storage));
3615 memcpy(tmp_storage, a->session_id, a->session_id_length);
3616 session_id = tmp_storage;
3620 ((unsigned long)session_id[0]) |
3621 ((unsigned long)session_id[1] << 8L) |
3622 ((unsigned long)session_id[2] << 16L) |
3623 ((unsigned long)session_id[3] << 24L);
3628 * NB: If this function (or indeed the hash function which uses a sort of
3629 * coarser function than this one) is changed, ensure
3630 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3631 * being able to construct an SSL_SESSION that will collide with any existing
3632 * session with a matching session ID.
3634 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3636 if (a->ssl_version != b->ssl_version)
3638 if (a->session_id_length != b->session_id_length)
3640 return memcmp(a->session_id, b->session_id, a->session_id_length);
3644 * These wrapper functions should remain rather than redeclaring
3645 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3646 * variable. The reason is that the functions aren't static, they're exposed
3650 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3651 const SSL_METHOD *meth)
3653 SSL_CTX *ret = NULL;
3654 #ifndef OPENSSL_NO_COMP_ALG
3659 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3663 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3666 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3667 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3670 ret = OPENSSL_zalloc(sizeof(*ret));
3674 /* Init the reference counting before any call to SSL_CTX_free */
3675 ret->references = 1;
3676 ret->lock = CRYPTO_THREAD_lock_new();
3677 if (ret->lock == NULL) {
3678 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3682 #ifdef TSAN_REQUIRES_LOCKING
3683 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3684 if (ret->tsan_lock == NULL) {
3685 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3690 ret->libctx = libctx;
3691 if (propq != NULL) {
3692 ret->propq = OPENSSL_strdup(propq);
3693 if (ret->propq == NULL)
3698 ret->min_proto_version = 0;
3699 ret->max_proto_version = 0;
3700 ret->mode = SSL_MODE_AUTO_RETRY;
3701 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3702 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3703 /* We take the system default. */
3704 ret->session_timeout = meth->get_timeout();
3705 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3706 ret->verify_mode = SSL_VERIFY_NONE;
3707 if ((ret->cert = ssl_cert_new()) == NULL) {
3708 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3712 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3713 if (ret->sessions == NULL) {
3714 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3717 ret->cert_store = X509_STORE_new();
3718 if (ret->cert_store == NULL) {
3719 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3722 #ifndef OPENSSL_NO_CT
3723 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3724 if (ret->ctlog_store == NULL) {
3725 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3730 /* initialize cipher/digest methods table */
3731 if (!ssl_load_ciphers(ret))
3733 /* initialise sig algs */
3734 if (!ssl_setup_sig_algs(ret))
3737 if (!ssl_load_groups(ret))
3740 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3741 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3745 if (!ssl_create_cipher_list(ret,
3746 ret->tls13_ciphersuites,
3747 &ret->cipher_list, &ret->cipher_list_by_id,
3748 OSSL_default_cipher_list(), ret->cert)
3749 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3750 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3754 ret->param = X509_VERIFY_PARAM_new();
3755 if (ret->param == NULL) {
3756 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3761 * If these aren't available from the provider we'll get NULL returns.
3762 * That's fine but will cause errors later if SSLv3 is negotiated
3764 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3765 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3767 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3768 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3772 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3773 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3777 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3778 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3782 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3785 /* No compression for DTLS */
3786 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3787 ret->comp_methods = SSL_COMP_get_compression_methods();
3789 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3790 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3792 /* Setup RFC5077 ticket keys */
3793 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3794 sizeof(ret->ext.tick_key_name), 0) <= 0)
3795 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3796 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3797 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3798 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3799 ret->options |= SSL_OP_NO_TICKET;
3801 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3802 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3803 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3807 #ifndef OPENSSL_NO_SRP
3808 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3809 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3813 #ifndef OPENSSL_NO_ENGINE
3814 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3815 # define eng_strx(x) #x
3816 # define eng_str(x) eng_strx(x)
3817 /* Use specific client engine automatically... ignore errors */
3820 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3823 ENGINE_load_builtin_engines();
3824 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3826 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3832 #ifndef OPENSSL_NO_COMP_ALG
3834 * Set the default order: brotli, zlib, zstd
3835 * Including only those enabled algorithms
3837 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3839 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3840 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3841 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3842 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3843 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3844 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3847 * Disable compression by default to prevent CRIME. Applications can
3848 * re-enable compression by configuring
3849 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3850 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3851 * middlebox compatibility by default. This may be disabled by default in
3852 * a later OpenSSL version.
3854 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3856 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3859 * We cannot usefully set a default max_early_data here (which gets
3860 * propagated in SSL_new(), for the following reason: setting the
3861 * SSL field causes tls_construct_stoc_early_data() to tell the
3862 * client that early data will be accepted when constructing a TLS 1.3
3863 * session ticket, and the client will accordingly send us early data
3864 * when using that ticket (if the client has early data to send).
3865 * However, in order for the early data to actually be consumed by
3866 * the application, the application must also have calls to
3867 * SSL_read_early_data(); otherwise we'll just skip past the early data
3868 * and ignore it. So, since the application must add calls to
3869 * SSL_read_early_data(), we also require them to add
3870 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3871 * eliminating the bandwidth-wasting early data in the case described
3874 ret->max_early_data = 0;
3877 * Default recv_max_early_data is a fully loaded single record. Could be
3878 * split across multiple records in practice. We set this differently to
3879 * max_early_data so that, in the default case, we do not advertise any
3880 * support for early_data, but if a client were to send us some (e.g.
3881 * because of an old, stale ticket) then we will tolerate it and skip over
3884 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3886 /* By default we send two session tickets automatically in TLSv1.3 */
3887 ret->num_tickets = 2;
3889 ssl_ctx_system_config(ret);
3897 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3899 return SSL_CTX_new_ex(NULL, NULL, meth);
3902 int SSL_CTX_up_ref(SSL_CTX *ctx)
3906 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3909 REF_PRINT_COUNT("SSL_CTX", ctx);
3910 REF_ASSERT_ISNT(i < 2);
3911 return ((i > 1) ? 1 : 0);
3914 void SSL_CTX_free(SSL_CTX *a)
3922 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3923 REF_PRINT_COUNT("SSL_CTX", a);
3926 REF_ASSERT_ISNT(i < 0);
3928 X509_VERIFY_PARAM_free(a->param);
3929 dane_ctx_final(&a->dane);
3932 * Free internal session cache. However: the remove_cb() may reference
3933 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3934 * after the sessions were flushed.
3935 * As the ex_data handling routines might also touch the session cache,
3936 * the most secure solution seems to be: empty (flush) the cache, then
3937 * free ex_data, then finally free the cache.
3938 * (See ticket [openssl.org #212].)
3940 if (a->sessions != NULL)
3941 SSL_CTX_flush_sessions(a, 0);
3943 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3944 lh_SSL_SESSION_free(a->sessions);
3945 X509_STORE_free(a->cert_store);
3946 #ifndef OPENSSL_NO_CT
3947 CTLOG_STORE_free(a->ctlog_store);
3949 sk_SSL_CIPHER_free(a->cipher_list);
3950 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3951 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3952 ssl_cert_free(a->cert);
3953 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3954 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3955 OSSL_STACK_OF_X509_free(a->extra_certs);
3956 a->comp_methods = NULL;
3957 #ifndef OPENSSL_NO_SRTP
3958 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3960 #ifndef OPENSSL_NO_SRP
3961 ssl_ctx_srp_ctx_free_intern(a);
3963 #ifndef OPENSSL_NO_ENGINE
3964 tls_engine_finish(a->client_cert_engine);
3967 OPENSSL_free(a->ext.ecpointformats);
3968 OPENSSL_free(a->ext.supportedgroups);
3969 OPENSSL_free(a->ext.supported_groups_default);
3970 OPENSSL_free(a->ext.alpn);
3971 OPENSSL_secure_free(a->ext.secure);
3973 ssl_evp_md_free(a->md5);
3974 ssl_evp_md_free(a->sha1);
3976 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3977 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3978 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3979 ssl_evp_md_free(a->ssl_digest_methods[j]);
3980 for (j = 0; j < a->group_list_len; j++) {
3981 OPENSSL_free(a->group_list[j].tlsname);
3982 OPENSSL_free(a->group_list[j].realname);
3983 OPENSSL_free(a->group_list[j].algorithm);
3985 OPENSSL_free(a->group_list);
3987 OPENSSL_free(a->sigalg_lookup_cache);
3989 CRYPTO_THREAD_lock_free(a->lock);
3990 #ifdef TSAN_REQUIRES_LOCKING
3991 CRYPTO_THREAD_lock_free(a->tsan_lock);
3994 OPENSSL_free(a->propq);
3999 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4001 ctx->default_passwd_callback = cb;
4004 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4006 ctx->default_passwd_callback_userdata = u;
4009 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4011 return ctx->default_passwd_callback;
4014 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4016 return ctx->default_passwd_callback_userdata;
4019 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4021 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4026 sc->default_passwd_callback = cb;
4029 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4031 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4036 sc->default_passwd_callback_userdata = u;
4039 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4041 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4046 return sc->default_passwd_callback;
4049 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4051 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4056 return sc->default_passwd_callback_userdata;
4059 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4060 int (*cb) (X509_STORE_CTX *, void *),
4063 ctx->app_verify_callback = cb;
4064 ctx->app_verify_arg = arg;
4067 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4068 int (*cb) (int, X509_STORE_CTX *))
4070 ctx->verify_mode = mode;
4071 ctx->default_verify_callback = cb;
4074 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4076 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4079 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4081 ssl_cert_set_cert_cb(c->cert, cb, arg);
4084 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4086 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4091 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4094 void ssl_set_masks(SSL_CONNECTION *s)
4097 uint32_t *pvalid = s->s3.tmp.valid_flags;
4098 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4099 unsigned long mask_k, mask_a;
4100 int have_ecc_cert, ecdsa_ok;
4105 dh_tmp = (c->dh_tmp != NULL
4106 || c->dh_tmp_cb != NULL
4109 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4110 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4111 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4112 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4116 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4117 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4119 #ifndef OPENSSL_NO_GOST
4120 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4121 mask_k |= SSL_kGOST | SSL_kGOST18;
4122 mask_a |= SSL_aGOST12;
4124 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4125 mask_k |= SSL_kGOST | SSL_kGOST18;
4126 mask_a |= SSL_aGOST12;
4128 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4129 mask_k |= SSL_kGOST;
4130 mask_a |= SSL_aGOST01;
4141 * If we only have an RSA-PSS certificate allow RSA authentication
4142 * if TLS 1.2 and peer supports it.
4145 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4146 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4147 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4154 mask_a |= SSL_aNULL;
4157 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4158 * depending on the key usage extension.
4160 if (have_ecc_cert) {
4162 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4163 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4164 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4167 mask_a |= SSL_aECDSA;
4169 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4170 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4171 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4172 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4173 mask_a |= SSL_aECDSA;
4175 /* Allow Ed448 for TLS 1.2 if peer supports it */
4176 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4177 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4178 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4179 mask_a |= SSL_aECDSA;
4181 mask_k |= SSL_kECDHE;
4183 #ifndef OPENSSL_NO_PSK
4186 if (mask_k & SSL_kRSA)
4187 mask_k |= SSL_kRSAPSK;
4188 if (mask_k & SSL_kDHE)
4189 mask_k |= SSL_kDHEPSK;
4190 if (mask_k & SSL_kECDHE)
4191 mask_k |= SSL_kECDHEPSK;
4194 s->s3.tmp.mask_k = mask_k;
4195 s->s3.tmp.mask_a = mask_a;
4198 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4200 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4201 /* key usage, if present, must allow signing */
4202 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4203 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4207 return 1; /* all checks are ok */
4210 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4211 const unsigned char **serverinfo,
4212 size_t *serverinfo_length)
4214 CERT_PKEY *cpk = s->s3.tmp.cert;
4215 *serverinfo_length = 0;
4217 if (cpk == NULL || cpk->serverinfo == NULL)
4220 *serverinfo = cpk->serverinfo;
4221 *serverinfo_length = cpk->serverinfo_length;
4225 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4230 * If the session_id_length is 0, we are not supposed to cache it, and it
4231 * would be rather hard to do anyway :-)
4233 if (s->session->session_id_length == 0)
4237 * If sid_ctx_length is 0 there is no specific application context
4238 * associated with this session, so when we try to resume it and
4239 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4240 * indication that this is actually a session for the proper application
4241 * context, and the *handshake* will fail, not just the resumption attempt.
4242 * Do not cache (on the server) these sessions that are not resumable
4243 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4245 if (s->server && s->session->sid_ctx_length == 0
4246 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4249 i = s->session_ctx->session_cache_mode;
4251 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4253 * Add the session to the internal cache. In server side TLSv1.3 we
4254 * normally don't do this because by default it's a full stateless ticket
4255 * with only a dummy session id so there is no reason to cache it,
4257 * - we are doing early_data, in which case we cache so that we can
4259 * - the application has set a remove_session_cb so needs to know about
4260 * session timeout events
4261 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4263 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4264 && (!SSL_CONNECTION_IS_TLS13(s)
4266 || (s->max_early_data > 0
4267 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4268 || s->session_ctx->remove_session_cb != NULL
4269 || (s->options & SSL_OP_NO_TICKET) != 0))
4270 SSL_CTX_add_session(s->session_ctx, s->session);
4273 * Add the session to the external cache. We do this even in server side
4274 * TLSv1.3 without early data because some applications just want to
4275 * know about the creation of a session and aren't doing a full cache.
4277 if (s->session_ctx->new_session_cb != NULL) {
4278 SSL_SESSION_up_ref(s->session);
4279 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4281 SSL_SESSION_free(s->session);
4285 /* auto flush every 255 connections */
4286 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4287 TSAN_QUALIFIER int *stat;
4289 if (mode & SSL_SESS_CACHE_CLIENT)
4290 stat = &s->session_ctx->stats.sess_connect_good;
4292 stat = &s->session_ctx->stats.sess_accept_good;
4293 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4294 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4298 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4303 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4308 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4311 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4313 /* TODO(QUIC): Do we want this for QUIC? */
4315 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4318 if (s->method != meth) {
4319 const SSL_METHOD *sm = s->method;
4320 int (*hf) (SSL *) = sc->handshake_func;
4322 if (sm->version == meth->version)
4327 ret = s->method->ssl_init(s);
4330 if (hf == sm->ssl_connect)
4331 sc->handshake_func = meth->ssl_connect;
4332 else if (hf == sm->ssl_accept)
4333 sc->handshake_func = meth->ssl_accept;
4338 int SSL_get_error(const SSL *s, int i)
4343 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4346 return SSL_ERROR_NONE;
4348 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4350 return SSL_ERROR_SSL;
4353 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4354 * where we do encode the error
4356 if ((l = ERR_peek_error()) != 0) {
4357 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4358 return SSL_ERROR_SYSCALL;
4360 return SSL_ERROR_SSL;
4363 if (SSL_want_read(s)) {
4364 bio = SSL_get_rbio(s);
4365 if (BIO_should_read(bio))
4366 return SSL_ERROR_WANT_READ;
4367 else if (BIO_should_write(bio))
4369 * This one doesn't make too much sense ... We never try to write
4370 * to the rbio, and an application program where rbio and wbio
4371 * are separate couldn't even know what it should wait for.
4372 * However if we ever set s->rwstate incorrectly (so that we have
4373 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4374 * wbio *are* the same, this test works around that bug; so it
4375 * might be safer to keep it.
4377 return SSL_ERROR_WANT_WRITE;
4378 else if (BIO_should_io_special(bio)) {
4379 reason = BIO_get_retry_reason(bio);
4380 if (reason == BIO_RR_CONNECT)
4381 return SSL_ERROR_WANT_CONNECT;
4382 else if (reason == BIO_RR_ACCEPT)
4383 return SSL_ERROR_WANT_ACCEPT;
4385 return SSL_ERROR_SYSCALL; /* unknown */
4389 if (SSL_want_write(s)) {
4390 /* Access wbio directly - in order to use the buffered bio if present */
4392 if (BIO_should_write(bio))
4393 return SSL_ERROR_WANT_WRITE;
4394 else if (BIO_should_read(bio))
4396 * See above (SSL_want_read(s) with BIO_should_write(bio))
4398 return SSL_ERROR_WANT_READ;
4399 else if (BIO_should_io_special(bio)) {
4400 reason = BIO_get_retry_reason(bio);
4401 if (reason == BIO_RR_CONNECT)
4402 return SSL_ERROR_WANT_CONNECT;
4403 else if (reason == BIO_RR_ACCEPT)
4404 return SSL_ERROR_WANT_ACCEPT;
4406 return SSL_ERROR_SYSCALL;
4409 if (SSL_want_x509_lookup(s))
4410 return SSL_ERROR_WANT_X509_LOOKUP;
4411 if (SSL_want_retry_verify(s))
4412 return SSL_ERROR_WANT_RETRY_VERIFY;
4413 if (SSL_want_async(s))
4414 return SSL_ERROR_WANT_ASYNC;
4415 if (SSL_want_async_job(s))
4416 return SSL_ERROR_WANT_ASYNC_JOB;
4417 if (SSL_want_client_hello_cb(s))
4418 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4420 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4421 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4422 return SSL_ERROR_ZERO_RETURN;
4424 return SSL_ERROR_SYSCALL;
4427 static int ssl_do_handshake_intern(void *vargs)
4429 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4431 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4436 return sc->handshake_func(s);
4439 int SSL_do_handshake(SSL *s)
4442 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4444 /* TODO(QUIC): Special handling for QUIC will be needed */
4448 if (sc->handshake_func == NULL) {
4449 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4453 ossl_statem_check_finish_init(sc, -1);
4455 s->method->ssl_renegotiate_check(s, 0);
4457 if (SSL_in_init(s) || SSL_in_before(s)) {
4458 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4459 struct ssl_async_args args;
4461 memset(&args, 0, sizeof(args));
4464 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4466 ret = sc->handshake_func(s);
4472 void SSL_set_accept_state(SSL *s)
4474 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4476 /* TODO(QUIC): Special handling for QUIC will be needed */
4482 ossl_statem_clear(sc);
4483 sc->handshake_func = s->method->ssl_accept;
4487 void SSL_set_connect_state(SSL *s)
4489 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4491 /* TODO(QUIC): Special handling for QUIC will be needed */
4497 ossl_statem_clear(sc);
4498 sc->handshake_func = s->method->ssl_connect;
4502 int ssl_undefined_function(SSL *s)
4504 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4508 int ssl_undefined_void_function(void)
4510 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4514 int ssl_undefined_const_function(const SSL *s)
4519 const SSL_METHOD *ssl_bad_method(int ver)
4521 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4525 const char *ssl_protocol_to_string(int version)
4529 case TLS1_3_VERSION:
4532 case TLS1_2_VERSION:
4535 case TLS1_1_VERSION:
4550 case DTLS1_2_VERSION:
4558 const char *SSL_get_version(const SSL *s)
4560 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4562 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4566 return ssl_protocol_to_string(sc->version);
4569 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4571 STACK_OF(X509_NAME) *sk;
4580 if ((sk = sk_X509_NAME_new_null()) == NULL)
4582 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4583 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4585 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4588 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4590 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4599 SSL *SSL_dup(SSL *s)
4603 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4604 SSL_CONNECTION *retsc;
4605 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4610 /* If we're not quiescent, just up_ref! */
4611 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4612 CRYPTO_UP_REF(&s->references, &i, s->lock);
4617 * Otherwise, copy configuration state, and session if set.
4619 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4621 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4624 if (sc->session != NULL) {
4626 * Arranges to share the same session via up_ref. This "copies"
4627 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4629 if (!SSL_copy_session_id(ret, s))
4633 * No session has been established yet, so we have to expect that
4634 * s->cert or ret->cert will be changed later -- they should not both
4635 * point to the same object, and thus we can't use
4636 * SSL_copy_session_id.
4638 if (!SSL_set_ssl_method(ret, s->method))
4641 if (sc->cert != NULL) {
4642 ssl_cert_free(retsc->cert);
4643 retsc->cert = ssl_cert_dup(sc->cert);
4644 if (retsc->cert == NULL)
4648 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4649 (int)sc->sid_ctx_length))
4653 if (!ssl_dane_dup(retsc, sc))
4655 retsc->version = sc->version;
4656 retsc->options = sc->options;
4657 retsc->min_proto_version = sc->min_proto_version;
4658 retsc->max_proto_version = sc->max_proto_version;
4659 retsc->mode = sc->mode;
4660 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4661 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4662 retsc->msg_callback = sc->msg_callback;
4663 retsc->msg_callback_arg = sc->msg_callback_arg;
4664 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4665 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4666 retsc->generate_session_id = sc->generate_session_id;
4668 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4670 /* copy app data, a little dangerous perhaps */
4671 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4674 retsc->server = sc->server;
4675 if (sc->handshake_func) {
4677 SSL_set_accept_state(ret);
4679 SSL_set_connect_state(ret);
4681 retsc->shutdown = sc->shutdown;
4682 retsc->hit = sc->hit;
4684 retsc->default_passwd_callback = sc->default_passwd_callback;
4685 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4687 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4689 /* dup the cipher_list and cipher_list_by_id stacks */
4690 if (sc->cipher_list != NULL) {
4691 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4694 if (sc->cipher_list_by_id != NULL)
4695 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4699 /* Dup the client_CA list */
4700 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4701 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4711 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4713 if (s->enc_read_ctx != NULL) {
4714 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4715 s->enc_read_ctx = NULL;
4717 if (s->enc_write_ctx != NULL) {
4718 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4719 s->enc_write_ctx = NULL;
4721 #ifndef OPENSSL_NO_COMP
4722 COMP_CTX_free(s->expand);
4724 COMP_CTX_free(s->compress);
4729 X509 *SSL_get_certificate(const SSL *s)
4731 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4736 if (sc->cert != NULL)
4737 return sc->cert->key->x509;
4742 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4744 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4749 if (sc->cert != NULL)
4750 return sc->cert->key->privatekey;
4755 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4757 if (ctx->cert != NULL)
4758 return ctx->cert->key->x509;
4763 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4765 if (ctx->cert != NULL)
4766 return ctx->cert->key->privatekey;
4771 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4773 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4778 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4779 return sc->session->cipher;
4783 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4785 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4790 return sc->s3.tmp.new_cipher;
4793 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4795 #ifndef OPENSSL_NO_COMP
4796 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4801 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4807 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4809 #ifndef OPENSSL_NO_COMP
4810 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4815 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4821 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4825 if (s->bbio != NULL) {
4826 /* Already buffered. */
4830 bbio = BIO_new(BIO_f_buffer());
4831 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4833 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4837 s->wbio = BIO_push(bbio, s->wbio);
4839 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4844 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4846 /* callers ensure s is never null */
4847 if (s->bbio == NULL)
4850 s->wbio = BIO_pop(s->wbio);
4851 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4859 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4861 ctx->quiet_shutdown = mode;
4864 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4866 return ctx->quiet_shutdown;
4869 void SSL_set_quiet_shutdown(SSL *s, int mode)
4871 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4873 /* TODO(QUIC): Do we want this for QUIC? */
4877 sc->quiet_shutdown = mode;
4880 int SSL_get_quiet_shutdown(const SSL *s)
4882 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4884 /* TODO(QUIC): Do we want this for QUIC? */
4888 return sc->quiet_shutdown;
4891 void SSL_set_shutdown(SSL *s, int mode)
4893 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4895 /* TODO(QUIC): Do we want this for QUIC? */
4899 sc->shutdown = mode;
4902 int SSL_get_shutdown(const SSL *s)
4904 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4906 /* TODO(QUIC): Do we want this for QUIC? */
4910 return sc->shutdown;
4913 int SSL_version(const SSL *s)
4915 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4917 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4924 int SSL_client_version(const SSL *s)
4926 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4928 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4932 return sc->client_version;
4935 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4940 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4943 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4945 /* TODO(QUIC): Do we need this for QUIC support? */
4949 if (ssl->ctx == ctx)
4952 ctx = sc->session_ctx;
4953 new_cert = ssl_cert_dup(ctx->cert);
4954 if (new_cert == NULL) {
4958 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4959 ssl_cert_free(new_cert);
4963 ssl_cert_free(sc->cert);
4964 sc->cert = new_cert;
4967 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4968 * so setter APIs must prevent invalid lengths from entering the system.
4970 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4974 * If the session ID context matches that of the parent SSL_CTX,
4975 * inherit it from the new SSL_CTX as well. If however the context does
4976 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4977 * leave it unchanged.
4979 if ((ssl->ctx != NULL) &&
4980 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4981 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4982 sc->sid_ctx_length = ctx->sid_ctx_length;
4983 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4986 SSL_CTX_up_ref(ctx);
4987 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4993 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4995 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4999 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5001 X509_LOOKUP *lookup;
5003 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5007 /* We ignore errors, in case the directory doesn't exist */
5010 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5017 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5019 X509_LOOKUP *lookup;
5021 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5025 /* We ignore errors, in case the file doesn't exist */
5028 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5036 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5038 X509_LOOKUP *lookup;
5040 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5044 /* We ignore errors, in case the directory doesn't exist */
5047 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5054 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5056 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5060 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5062 return X509_STORE_load_path(ctx->cert_store, CApath);
5065 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5067 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5071 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5074 if (CAfile == NULL && CApath == NULL)
5076 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5078 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5083 void SSL_set_info_callback(SSL *ssl,
5084 void (*cb) (const SSL *ssl, int type, int val))
5086 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5091 sc->info_callback = cb;
5095 * One compiler (Diab DCC) doesn't like argument names in returned function
5098 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5101 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5106 return sc->info_callback;
5109 void SSL_set_verify_result(SSL *ssl, long arg)
5111 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5116 sc->verify_result = arg;
5119 long SSL_get_verify_result(const SSL *ssl)
5121 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5126 return sc->verify_result;
5129 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5131 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5137 return sizeof(sc->s3.client_random);
5138 if (outlen > sizeof(sc->s3.client_random))
5139 outlen = sizeof(sc->s3.client_random);
5140 memcpy(out, sc->s3.client_random, outlen);
5144 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5146 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5152 return sizeof(sc->s3.server_random);
5153 if (outlen > sizeof(sc->s3.server_random))
5154 outlen = sizeof(sc->s3.server_random);
5155 memcpy(out, sc->s3.server_random, outlen);
5159 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5160 unsigned char *out, size_t outlen)
5163 return session->master_key_length;
5164 if (outlen > session->master_key_length)
5165 outlen = session->master_key_length;
5166 memcpy(out, session->master_key, outlen);
5170 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5173 if (len > sizeof(sess->master_key))
5176 memcpy(sess->master_key, in, len);
5177 sess->master_key_length = len;
5182 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5184 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5187 void *SSL_get_ex_data(const SSL *s, int idx)
5189 return CRYPTO_get_ex_data(&s->ex_data, idx);
5192 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5194 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5197 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5199 return CRYPTO_get_ex_data(&s->ex_data, idx);
5202 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5204 return ctx->cert_store;
5207 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5209 X509_STORE_free(ctx->cert_store);
5210 ctx->cert_store = store;
5213 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5216 X509_STORE_up_ref(store);
5217 SSL_CTX_set_cert_store(ctx, store);
5220 int SSL_want(const SSL *s)
5222 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5230 #ifndef OPENSSL_NO_PSK
5231 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5233 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5234 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5237 OPENSSL_free(ctx->cert->psk_identity_hint);
5238 if (identity_hint != NULL) {
5239 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5240 if (ctx->cert->psk_identity_hint == NULL)
5243 ctx->cert->psk_identity_hint = NULL;
5247 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5249 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5254 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5255 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5258 OPENSSL_free(sc->cert->psk_identity_hint);
5259 if (identity_hint != NULL) {
5260 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5261 if (sc->cert->psk_identity_hint == NULL)
5264 sc->cert->psk_identity_hint = NULL;
5268 const char *SSL_get_psk_identity_hint(const SSL *s)
5270 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5272 if (sc == NULL || sc->session == NULL)
5275 return sc->session->psk_identity_hint;
5278 const char *SSL_get_psk_identity(const SSL *s)
5280 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5282 if (sc == NULL || sc->session == NULL)
5285 return sc->session->psk_identity;
5288 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5290 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5295 sc->psk_client_callback = cb;
5298 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5300 ctx->psk_client_callback = cb;
5303 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5305 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5310 sc->psk_server_callback = cb;
5313 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5315 ctx->psk_server_callback = cb;
5319 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5321 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5326 sc->psk_find_session_cb = cb;
5329 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5330 SSL_psk_find_session_cb_func cb)
5332 ctx->psk_find_session_cb = cb;
5335 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5337 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5342 sc->psk_use_session_cb = cb;
5345 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5346 SSL_psk_use_session_cb_func cb)
5348 ctx->psk_use_session_cb = cb;
5351 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5352 void (*cb) (int write_p, int version,
5353 int content_type, const void *buf,
5354 size_t len, SSL *ssl, void *arg))
5356 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5359 void SSL_set_msg_callback(SSL *ssl,
5360 void (*cb) (int write_p, int version,
5361 int content_type, const void *buf,
5362 size_t len, SSL *ssl, void *arg))
5364 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5367 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5368 int (*cb) (SSL *ssl,
5372 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5373 (void (*)(void))cb);
5376 void SSL_set_not_resumable_session_callback(SSL *ssl,
5377 int (*cb) (SSL *ssl,
5378 int is_forward_secure))
5380 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5381 (void (*)(void))cb);
5384 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5385 size_t (*cb) (SSL *ssl, int type,
5386 size_t len, void *arg))
5388 ctx->record_padding_cb = cb;
5391 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5393 ctx->record_padding_arg = arg;
5396 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5398 return ctx->record_padding_arg;
5401 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5403 /* block size of 0 or 1 is basically no padding */
5404 if (block_size == 1)
5405 ctx->block_padding = 0;
5406 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5407 ctx->block_padding = block_size;
5413 int SSL_set_record_padding_callback(SSL *ssl,
5414 size_t (*cb) (SSL *ssl, int type,
5415 size_t len, void *arg))
5418 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5423 b = SSL_get_wbio(ssl);
5424 if (b == NULL || !BIO_get_ktls_send(b)) {
5425 sc->rlayer.record_padding_cb = cb;
5431 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5433 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5438 sc->rlayer.record_padding_arg = arg;
5441 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5443 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5448 return sc->rlayer.record_padding_arg;
5451 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5453 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5458 /* block size of 0 or 1 is basically no padding */
5459 if (block_size == 1)
5460 sc->rlayer.block_padding = 0;
5461 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5462 sc->rlayer.block_padding = block_size;
5468 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5470 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5475 sc->num_tickets = num_tickets;
5480 size_t SSL_get_num_tickets(const SSL *s)
5482 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5487 return sc->num_tickets;
5490 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5492 ctx->num_tickets = num_tickets;
5497 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5499 return ctx->num_tickets;
5503 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5504 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5505 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5506 * Returns the newly allocated ctx;
5509 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5511 ssl_clear_hash_ctx(hash);
5512 *hash = EVP_MD_CTX_new();
5513 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5514 EVP_MD_CTX_free(*hash);
5521 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5524 EVP_MD_CTX_free(*hash);
5528 /* Retrieve handshake hashes */
5529 int ssl_handshake_hash(SSL_CONNECTION *s,
5530 unsigned char *out, size_t outlen,
5533 EVP_MD_CTX *ctx = NULL;
5534 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5535 int hashleni = EVP_MD_CTX_get_size(hdgst);
5538 if (hashleni < 0 || (size_t)hashleni > outlen) {
5539 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5543 ctx = EVP_MD_CTX_new();
5545 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5549 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5550 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5551 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5555 *hashlen = hashleni;
5559 EVP_MD_CTX_free(ctx);
5563 int SSL_session_reused(const SSL *s)
5565 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5573 int SSL_is_server(const SSL *s)
5575 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5583 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5584 void SSL_set_debug(SSL *s, int debug)
5586 /* Old function was do-nothing anyway... */
5592 void SSL_set_security_level(SSL *s, int level)
5594 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5599 sc->cert->sec_level = level;
5602 int SSL_get_security_level(const SSL *s)
5604 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5609 return sc->cert->sec_level;
5612 void SSL_set_security_callback(SSL *s,
5613 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5614 int op, int bits, int nid,
5615 void *other, void *ex))
5617 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5622 sc->cert->sec_cb = cb;
5625 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5626 const SSL_CTX *ctx, int op,
5627 int bits, int nid, void *other,
5629 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5634 return sc->cert->sec_cb;
5637 void SSL_set0_security_ex_data(SSL *s, void *ex)
5639 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5644 sc->cert->sec_ex = ex;
5647 void *SSL_get0_security_ex_data(const SSL *s)
5649 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5654 return sc->cert->sec_ex;
5657 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5659 ctx->cert->sec_level = level;
5662 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5664 return ctx->cert->sec_level;
5667 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5668 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5669 int op, int bits, int nid,
5670 void *other, void *ex))
5672 ctx->cert->sec_cb = cb;
5675 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5681 return ctx->cert->sec_cb;
5684 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5686 ctx->cert->sec_ex = ex;
5689 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5691 return ctx->cert->sec_ex;
5694 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5696 return ctx->options;
5699 uint64_t SSL_get_options(const SSL *s)
5701 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5709 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5711 return ctx->options |= op;
5714 uint64_t SSL_set_options(SSL *s, uint64_t op)
5716 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5717 OSSL_PARAM options[2], *opts = options;
5724 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5726 *opts = OSSL_PARAM_construct_end();
5728 /* Ignore return value */
5729 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5734 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5736 return ctx->options &= ~op;
5739 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5741 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5746 return sc->options &= ~op;
5749 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5751 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5756 return sc->verified_chain;
5759 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5761 #ifndef OPENSSL_NO_CT
5764 * Moves SCTs from the |src| stack to the |dst| stack.
5765 * The source of each SCT will be set to |origin|.
5766 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5768 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5770 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5771 sct_source_t origin)
5777 *dst = sk_SCT_new_null();
5779 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5784 while (sk_SCT_num(src) > 0) {
5785 sct = sk_SCT_pop(src);
5786 if (SCT_set_source(sct, origin) != 1)
5789 if (sk_SCT_push(*dst, sct) <= 0)
5797 sk_SCT_push(src, sct); /* Put the SCT back */
5802 * Look for data collected during ServerHello and parse if found.
5803 * Returns the number of SCTs extracted.
5805 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5807 int scts_extracted = 0;
5809 if (s->ext.scts != NULL) {
5810 const unsigned char *p = s->ext.scts;
5811 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5813 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5815 SCT_LIST_free(scts);
5818 return scts_extracted;
5822 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5823 * contains an SCT X509 extension. They will be stored in |s->scts|.
5825 * - The number of SCTs extracted, assuming an OCSP response exists.
5826 * - 0 if no OCSP response exists or it contains no SCTs.
5827 * - A negative integer if an error occurs.
5829 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5831 # ifndef OPENSSL_NO_OCSP
5832 int scts_extracted = 0;
5833 const unsigned char *p;
5834 OCSP_BASICRESP *br = NULL;
5835 OCSP_RESPONSE *rsp = NULL;
5836 STACK_OF(SCT) *scts = NULL;
5839 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5842 p = s->ext.ocsp.resp;
5843 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5847 br = OCSP_response_get1_basic(rsp);
5851 for (i = 0; i < OCSP_resp_count(br); ++i) {
5852 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5858 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5860 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5861 if (scts_extracted < 0)
5865 SCT_LIST_free(scts);
5866 OCSP_BASICRESP_free(br);
5867 OCSP_RESPONSE_free(rsp);
5868 return scts_extracted;
5870 /* Behave as if no OCSP response exists */
5876 * Attempts to extract SCTs from the peer certificate.
5877 * Return the number of SCTs extracted, or a negative integer if an error
5880 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5882 int scts_extracted = 0;
5883 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5886 STACK_OF(SCT) *scts =
5887 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5890 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5892 SCT_LIST_free(scts);
5895 return scts_extracted;
5899 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5900 * response (if it exists) and X509v3 extensions in the certificate.
5901 * Returns NULL if an error occurs.
5903 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5905 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5910 if (!sc->scts_parsed) {
5911 if (ct_extract_tls_extension_scts(sc) < 0 ||
5912 ct_extract_ocsp_response_scts(sc) < 0 ||
5913 ct_extract_x509v3_extension_scts(sc) < 0)
5916 sc->scts_parsed = 1;
5923 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5924 const STACK_OF(SCT) *scts, void *unused_arg)
5929 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5930 const STACK_OF(SCT) *scts, void *unused_arg)
5932 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5935 for (i = 0; i < count; ++i) {
5936 SCT *sct = sk_SCT_value(scts, i);
5937 int status = SCT_get_validation_status(sct);
5939 if (status == SCT_VALIDATION_STATUS_VALID)
5942 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5946 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5949 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5955 * Since code exists that uses the custom extension handler for CT, look
5956 * for this and throw an error if they have already registered to use CT.
5958 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5959 TLSEXT_TYPE_signed_certificate_timestamp))
5961 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5965 if (callback != NULL) {
5967 * If we are validating CT, then we MUST accept SCTs served via OCSP
5969 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5973 sc->ct_validation_callback = callback;
5974 sc->ct_validation_callback_arg = arg;
5979 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5980 ssl_ct_validation_cb callback, void *arg)
5983 * Since code exists that uses the custom extension handler for CT, look for
5984 * this and throw an error if they have already registered to use CT.
5986 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5987 TLSEXT_TYPE_signed_certificate_timestamp))
5989 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5993 ctx->ct_validation_callback = callback;
5994 ctx->ct_validation_callback_arg = arg;
5998 int SSL_ct_is_enabled(const SSL *s)
6000 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6005 return sc->ct_validation_callback != NULL;
6008 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6010 return ctx->ct_validation_callback != NULL;
6013 int ssl_validate_ct(SSL_CONNECTION *s)
6016 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6018 SSL_DANE *dane = &s->dane;
6019 CT_POLICY_EVAL_CTX *ctx = NULL;
6020 const STACK_OF(SCT) *scts;
6023 * If no callback is set, the peer is anonymous, or its chain is invalid,
6024 * skip SCT validation - just return success. Applications that continue
6025 * handshakes without certificates, with unverified chains, or pinned leaf
6026 * certificates are outside the scope of the WebPKI and CT.
6028 * The above exclusions notwithstanding the vast majority of peers will
6029 * have rather ordinary certificate chains validated by typical
6030 * applications that perform certificate verification and therefore will
6031 * process SCTs when enabled.
6033 if (s->ct_validation_callback == NULL || cert == NULL ||
6034 s->verify_result != X509_V_OK ||
6035 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6039 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6040 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6042 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6043 switch (dane->mtlsa->usage) {
6044 case DANETLS_USAGE_DANE_TA:
6045 case DANETLS_USAGE_DANE_EE:
6050 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6051 SSL_CONNECTION_GET_CTX(s)->propq);
6053 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6057 issuer = sk_X509_value(s->verified_chain, 1);
6058 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6059 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6060 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6061 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6062 CT_POLICY_EVAL_CTX_set_time(
6063 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6065 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6068 * This function returns success (> 0) only when all the SCTs are valid, 0
6069 * when some are invalid, and < 0 on various internal errors (out of
6070 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6071 * reason to abort the handshake, that decision is up to the callback.
6072 * Therefore, we error out only in the unexpected case that the return
6073 * value is negative.
6075 * XXX: One might well argue that the return value of this function is an
6076 * unfortunate design choice. Its job is only to determine the validation
6077 * status of each of the provided SCTs. So long as it correctly separates
6078 * the wheat from the chaff it should return success. Failure in this case
6079 * ought to correspond to an inability to carry out its duties.
6081 if (SCT_LIST_validate(scts, ctx) < 0) {
6082 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6086 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6088 ret = 0; /* This function returns 0 on failure */
6090 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6093 CT_POLICY_EVAL_CTX_free(ctx);
6095 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6096 * failure return code here. Also the application may wish the complete
6097 * the handshake, and then disconnect cleanly at a higher layer, after
6098 * checking the verification status of the completed connection.
6100 * We therefore force a certificate verification failure which will be
6101 * visible via SSL_get_verify_result() and cached as part of any resumed
6104 * Note: the permissive callback is for information gathering only, always
6105 * returns success, and does not affect verification status. Only the
6106 * strict callback or a custom application-specified callback can trigger
6107 * connection failure or record a verification error.
6110 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6114 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6116 switch (validation_mode) {
6118 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6120 case SSL_CT_VALIDATION_PERMISSIVE:
6121 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6122 case SSL_CT_VALIDATION_STRICT:
6123 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6127 int SSL_enable_ct(SSL *s, int validation_mode)
6129 switch (validation_mode) {
6131 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6133 case SSL_CT_VALIDATION_PERMISSIVE:
6134 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6135 case SSL_CT_VALIDATION_STRICT:
6136 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6140 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6142 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6145 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6147 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6150 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6152 CTLOG_STORE_free(ctx->ctlog_store);
6153 ctx->ctlog_store = logs;
6156 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6158 return ctx->ctlog_store;
6161 #endif /* OPENSSL_NO_CT */
6163 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6166 c->client_hello_cb = cb;
6167 c->client_hello_cb_arg = arg;
6170 int SSL_client_hello_isv2(SSL *s)
6172 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6177 if (sc->clienthello == NULL)
6179 return sc->clienthello->isv2;
6182 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6184 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6189 if (sc->clienthello == NULL)
6191 return sc->clienthello->legacy_version;
6194 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6196 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6201 if (sc->clienthello == NULL)
6204 *out = sc->clienthello->random;
6205 return SSL3_RANDOM_SIZE;
6208 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6210 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6215 if (sc->clienthello == NULL)
6218 *out = sc->clienthello->session_id;
6219 return sc->clienthello->session_id_len;
6222 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6224 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6229 if (sc->clienthello == NULL)
6232 *out = PACKET_data(&sc->clienthello->ciphersuites);
6233 return PACKET_remaining(&sc->clienthello->ciphersuites);
6236 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6238 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6243 if (sc->clienthello == NULL)
6246 *out = sc->clienthello->compressions;
6247 return sc->clienthello->compressions_len;
6250 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6255 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6260 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6262 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6263 ext = sc->clienthello->pre_proc_exts + i;
6272 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6274 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6275 ext = sc->clienthello->pre_proc_exts + i;
6277 if (ext->received_order >= num)
6279 present[ext->received_order] = ext->type;
6286 OPENSSL_free(present);
6290 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6294 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6299 if (sc->clienthello == NULL || num_exts == NULL)
6301 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6302 ext = sc->clienthello->pre_proc_exts + i;
6314 if (*num_exts < num)
6316 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6317 ext = sc->clienthello->pre_proc_exts + i;
6319 if (ext->received_order >= num)
6321 exts[ext->received_order] = ext->type;
6328 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6333 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6338 if (sc->clienthello == NULL)
6340 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6341 r = sc->clienthello->pre_proc_exts + i;
6342 if (r->present && r->type == type) {
6344 *out = PACKET_data(&r->data);
6346 *outlen = PACKET_remaining(&r->data);
6353 int SSL_free_buffers(SSL *ssl)
6356 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6363 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6366 RECORD_LAYER_release(rl);
6370 int SSL_alloc_buffers(SSL *ssl)
6372 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6377 /* TODO(RECLAYER): Need a way to make this happen in the record layer */
6381 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6383 ctx->keylog_callback = cb;
6386 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6388 return ctx->keylog_callback;
6391 static int nss_keylog_int(const char *prefix,
6393 const uint8_t *parameter_1,
6394 size_t parameter_1_len,
6395 const uint8_t *parameter_2,
6396 size_t parameter_2_len)
6399 char *cursor = NULL;
6403 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6405 if (sctx->keylog_callback == NULL)
6409 * Our output buffer will contain the following strings, rendered with
6410 * space characters in between, terminated by a NULL character: first the
6411 * prefix, then the first parameter, then the second parameter. The
6412 * meaning of each parameter depends on the specific key material being
6413 * logged. Note that the first and second parameters are encoded in
6414 * hexadecimal, so we need a buffer that is twice their lengths.
6416 prefix_len = strlen(prefix);
6417 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6418 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6421 strcpy(cursor, prefix);
6422 cursor += prefix_len;
6425 for (i = 0; i < parameter_1_len; i++) {
6426 sprintf(cursor, "%02x", parameter_1[i]);
6431 for (i = 0; i < parameter_2_len; i++) {
6432 sprintf(cursor, "%02x", parameter_2[i]);
6437 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6438 OPENSSL_clear_free(out, out_len);
6443 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6444 const uint8_t *encrypted_premaster,
6445 size_t encrypted_premaster_len,
6446 const uint8_t *premaster,
6447 size_t premaster_len)
6449 if (encrypted_premaster_len < 8) {
6450 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6454 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6455 return nss_keylog_int("RSA",
6457 encrypted_premaster,
6463 int ssl_log_secret(SSL_CONNECTION *sc,
6465 const uint8_t *secret,
6468 return nss_keylog_int(label,
6470 sc->s3.client_random,
6476 #define SSLV2_CIPHER_LEN 3
6478 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6482 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6484 if (PACKET_remaining(cipher_suites) == 0) {
6485 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6489 if (PACKET_remaining(cipher_suites) % n != 0) {
6490 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6494 OPENSSL_free(s->s3.tmp.ciphers_raw);
6495 s->s3.tmp.ciphers_raw = NULL;
6496 s->s3.tmp.ciphers_rawlen = 0;
6499 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6500 PACKET sslv2ciphers = *cipher_suites;
6501 unsigned int leadbyte;
6505 * We store the raw ciphers list in SSLv3+ format so we need to do some
6506 * preprocessing to convert the list first. If there are any SSLv2 only
6507 * ciphersuites with a non-zero leading byte then we are going to
6508 * slightly over allocate because we won't store those. But that isn't a
6511 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6512 s->s3.tmp.ciphers_raw = raw;
6514 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6517 for (s->s3.tmp.ciphers_rawlen = 0;
6518 PACKET_remaining(&sslv2ciphers) > 0;
6519 raw += TLS_CIPHER_LEN) {
6520 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6522 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6525 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6526 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6527 OPENSSL_free(s->s3.tmp.ciphers_raw);
6528 s->s3.tmp.ciphers_raw = NULL;
6529 s->s3.tmp.ciphers_rawlen = 0;
6533 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6535 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6536 &s->s3.tmp.ciphers_rawlen)) {
6537 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6543 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6544 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6545 STACK_OF(SSL_CIPHER) **scsvs)
6548 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6553 if (!PACKET_buf_init(&pkt, bytes, len))
6555 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6558 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6559 STACK_OF(SSL_CIPHER) **skp,
6560 STACK_OF(SSL_CIPHER) **scsvs_out,
6561 int sslv2format, int fatal)
6563 const SSL_CIPHER *c;
6564 STACK_OF(SSL_CIPHER) *sk = NULL;
6565 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6567 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6568 unsigned char cipher[SSLV2_CIPHER_LEN];
6570 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6572 if (PACKET_remaining(cipher_suites) == 0) {
6574 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6576 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6580 if (PACKET_remaining(cipher_suites) % n != 0) {
6582 SSLfatal(s, SSL_AD_DECODE_ERROR,
6583 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6585 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6589 sk = sk_SSL_CIPHER_new_null();
6590 scsvs = sk_SSL_CIPHER_new_null();
6591 if (sk == NULL || scsvs == NULL) {
6593 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6595 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6599 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6601 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6602 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6603 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6605 if (sslv2format && cipher[0] != '\0')
6608 /* For SSLv2-compat, ignore leading 0-byte. */
6609 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6611 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6612 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6614 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6616 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6621 if (PACKET_remaining(cipher_suites) > 0) {
6623 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6625 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6632 sk_SSL_CIPHER_free(sk);
6633 if (scsvs_out != NULL)
6636 sk_SSL_CIPHER_free(scsvs);
6639 sk_SSL_CIPHER_free(sk);
6640 sk_SSL_CIPHER_free(scsvs);
6644 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6646 ctx->max_early_data = max_early_data;
6651 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6653 return ctx->max_early_data;
6656 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6658 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6663 sc->max_early_data = max_early_data;
6668 uint32_t SSL_get_max_early_data(const SSL *s)
6670 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6675 return sc->max_early_data;
6678 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6680 ctx->recv_max_early_data = recv_max_early_data;
6685 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6687 return ctx->recv_max_early_data;
6690 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6692 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6697 sc->recv_max_early_data = recv_max_early_data;
6702 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6704 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6709 return sc->recv_max_early_data;
6712 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6714 /* Return any active Max Fragment Len extension */
6715 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6716 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6718 /* return current SSL connection setting */
6719 return sc->max_send_fragment;
6722 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6724 /* Return a value regarding an active Max Fragment Len extension */
6725 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6726 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6727 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6729 /* else limit |split_send_fragment| to current |max_send_fragment| */
6730 if (sc->split_send_fragment > sc->max_send_fragment)
6731 return sc->max_send_fragment;
6733 /* return current SSL connection setting */
6734 return sc->split_send_fragment;
6737 int SSL_stateless(SSL *s)
6740 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6742 /* TODO(QUIC): This will need further work. */
6746 /* Ensure there is no state left over from a previous invocation */
6752 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6753 ret = SSL_accept(s);
6754 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6756 if (ret > 0 && sc->ext.cookieok)
6759 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6765 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6767 ctx->pha_enabled = val;
6770 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6772 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6777 sc->pha_enabled = val;
6780 int SSL_verify_client_post_handshake(SSL *ssl)
6782 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6787 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6788 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6792 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6796 if (!SSL_is_init_finished(ssl)) {
6797 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6801 switch (sc->post_handshake_auth) {
6803 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6806 case SSL_PHA_EXT_SENT:
6807 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6809 case SSL_PHA_EXT_RECEIVED:
6811 case SSL_PHA_REQUEST_PENDING:
6812 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6814 case SSL_PHA_REQUESTED:
6815 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6819 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6821 /* checks verify_mode and algorithm_auth */
6822 if (!send_certificate_request(sc)) {
6823 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6824 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6828 ossl_statem_set_in_init(sc, 1);
6832 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6833 SSL_CTX_generate_session_ticket_fn gen_cb,
6834 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6837 ctx->generate_ticket_cb = gen_cb;
6838 ctx->decrypt_ticket_cb = dec_cb;
6839 ctx->ticket_cb_data = arg;
6843 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6844 SSL_allow_early_data_cb_fn cb,
6847 ctx->allow_early_data_cb = cb;
6848 ctx->allow_early_data_cb_data = arg;
6851 void SSL_set_allow_early_data_cb(SSL *s,
6852 SSL_allow_early_data_cb_fn cb,
6855 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6860 sc->allow_early_data_cb = cb;
6861 sc->allow_early_data_cb_data = arg;
6864 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6866 const char *properties)
6868 const EVP_CIPHER *ciph;
6870 ciph = tls_get_cipher_from_engine(nid);
6875 * If there is no engine cipher then we do an explicit fetch. This may fail
6876 * and that could be ok
6879 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6885 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6887 /* Don't up-ref an implicit EVP_CIPHER */
6888 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6892 * The cipher was explicitly fetched and therefore it is safe to cast
6895 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6898 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6903 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6905 * The cipher was explicitly fetched and therefore it is safe to cast
6908 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6912 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6914 const char *properties)
6918 md = tls_get_digest_from_engine(nid);
6922 /* Otherwise we do an explicit fetch */
6924 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6929 int ssl_evp_md_up_ref(const EVP_MD *md)
6931 /* Don't up-ref an implicit EVP_MD */
6932 if (EVP_MD_get0_provider(md) == NULL)
6936 * The digest was explicitly fetched and therefore it is safe to cast
6939 return EVP_MD_up_ref((EVP_MD *)md);
6942 void ssl_evp_md_free(const EVP_MD *md)
6947 if (EVP_MD_get0_provider(md) != NULL) {
6949 * The digest was explicitly fetched and therefore it is safe to cast
6952 EVP_MD_free((EVP_MD *)md);
6956 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6958 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6963 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6964 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6965 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6968 EVP_PKEY_free(sc->cert->dh_tmp);
6969 sc->cert->dh_tmp = dhpkey;
6973 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6975 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6976 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6977 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6980 EVP_PKEY_free(ctx->cert->dh_tmp);
6981 ctx->cert->dh_tmp = dhpkey;