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_1(SSL_CONNECTION *sc, SSL3_RECORD *r, size_t s,
30 int t, SSL_MAC_BUF *mac, size_t macsize)
32 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
35 static int ssl_undefined_function_2(SSL_CONNECTION *sc, SSL3_RECORD *r,
36 unsigned char *s, int t)
38 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
41 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
42 unsigned char *s, size_t t, size_t *u)
44 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
47 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
49 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
52 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
53 size_t s, unsigned char *t)
55 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
58 static int ssl_undefined_function_6(int r)
60 return ssl_undefined_function(NULL);
63 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
64 size_t s, const char *t, size_t u,
65 const unsigned char *v, size_t w, int x)
67 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
70 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
72 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
75 SSL3_ENC_METHOD ssl3_undef_enc_method = {
76 ssl_undefined_function_1,
77 ssl_undefined_function_2,
78 ssl_undefined_function_8,
79 ssl_undefined_function_3,
80 ssl_undefined_function_4,
81 ssl_undefined_function_5,
82 NULL, /* client_finished_label */
83 0, /* client_finished_label_len */
84 NULL, /* server_finished_label */
85 0, /* server_finished_label_len */
86 ssl_undefined_function_6,
87 ssl_undefined_function_7,
90 struct ssl_async_args {
94 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
96 int (*func_read) (SSL *, void *, size_t, size_t *);
97 int (*func_write) (SSL *, const void *, size_t, size_t *);
98 int (*func_other) (SSL *);
102 static const struct {
108 DANETLS_MATCHING_FULL, 0, NID_undef
111 DANETLS_MATCHING_2256, 1, NID_sha256
114 DANETLS_MATCHING_2512, 2, NID_sha512
118 static int dane_ctx_enable(struct dane_ctx_st *dctx)
120 const EVP_MD **mdevp;
122 uint8_t mdmax = DANETLS_MATCHING_LAST;
123 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
126 if (dctx->mdevp != NULL)
129 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
130 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
132 if (mdord == NULL || mdevp == NULL) {
138 /* Install default entries */
139 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
142 if (dane_mds[i].nid == NID_undef ||
143 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
145 mdevp[dane_mds[i].mtype] = md;
146 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
156 static void dane_ctx_final(struct dane_ctx_st *dctx)
158 OPENSSL_free(dctx->mdevp);
161 OPENSSL_free(dctx->mdord);
166 static void tlsa_free(danetls_record *t)
170 OPENSSL_free(t->data);
171 EVP_PKEY_free(t->spki);
175 static void dane_final(SSL_DANE *dane)
177 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
180 OSSL_STACK_OF_X509_free(dane->certs);
183 X509_free(dane->mcert);
191 * dane_copy - Copy dane configuration, sans verification state.
193 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
198 if (!DANETLS_ENABLED(&from->dane))
201 num = sk_danetls_record_num(from->dane.trecs);
202 dane_final(&to->dane);
203 to->dane.flags = from->dane.flags;
204 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
205 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
207 if (to->dane.trecs == NULL) {
208 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
212 for (i = 0; i < num; ++i) {
213 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
215 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
216 t->selector, t->mtype, t->data, t->dlen) <= 0)
222 static int dane_mtype_set(struct dane_ctx_st *dctx,
223 const EVP_MD *md, uint8_t mtype, uint8_t ord)
227 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
228 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
232 if (mtype > dctx->mdmax) {
233 const EVP_MD **mdevp;
235 int n = ((int)mtype) + 1;
237 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
242 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
247 /* Zero-fill any gaps */
248 for (i = dctx->mdmax + 1; i < mtype; ++i) {
256 dctx->mdevp[mtype] = md;
257 /* Coerce ordinal of disabled matching types to 0 */
258 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
263 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
265 if (mtype > dane->dctx->mdmax)
267 return dane->dctx->mdevp[mtype];
270 static int dane_tlsa_add(SSL_DANE *dane,
273 uint8_t mtype, const unsigned char *data, size_t dlen)
276 const EVP_MD *md = NULL;
277 int ilen = (int)dlen;
281 if (dane->trecs == NULL) {
282 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
286 if (ilen < 0 || dlen != (size_t)ilen) {
287 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
291 if (usage > DANETLS_USAGE_LAST) {
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
296 if (selector > DANETLS_SELECTOR_LAST) {
297 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
301 if (mtype != DANETLS_MATCHING_FULL) {
302 md = tlsa_md_get(dane, mtype);
304 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
309 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
310 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
314 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
318 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
322 t->selector = selector;
324 t->data = OPENSSL_malloc(dlen);
325 if (t->data == NULL) {
329 memcpy(t->data, data, dlen);
332 /* Validate and cache full certificate or public key */
333 if (mtype == DANETLS_MATCHING_FULL) {
334 const unsigned char *p = data;
336 EVP_PKEY *pkey = NULL;
339 case DANETLS_SELECTOR_CERT:
340 if (!d2i_X509(&cert, &p, ilen) || p < data ||
341 dlen != (size_t)(p - data)) {
343 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
346 if (X509_get0_pubkey(cert) == NULL) {
348 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
352 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
358 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
359 * records that contain full certificates of trust-anchors that are
360 * not present in the wire chain. For usage PKIX-TA(0), we augment
361 * the chain with untrusted Full(0) certificates from DNS, in case
362 * they are missing from the chain.
364 if ((dane->certs == NULL &&
365 (dane->certs = sk_X509_new_null()) == NULL) ||
366 !sk_X509_push(dane->certs, cert)) {
367 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
374 case DANETLS_SELECTOR_SPKI:
375 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
376 dlen != (size_t)(p - data)) {
378 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
383 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
384 * records that contain full bare keys of trust-anchors that are
385 * not present in the wire chain.
387 if (usage == DANETLS_USAGE_DANE_TA)
396 * Find the right insertion point for the new record.
398 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
399 * they can be processed first, as they require no chain building, and no
400 * expiration or hostname checks. Because DANE-EE(3) is numerically
401 * largest, this is accomplished via descending sort by "usage".
403 * We also sort in descending order by matching ordinal to simplify
404 * the implementation of digest agility in the verification code.
406 * The choice of order for the selector is not significant, so we
407 * use the same descending order for consistency.
409 num = sk_danetls_record_num(dane->trecs);
410 for (i = 0; i < num; ++i) {
411 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
413 if (rec->usage > usage)
415 if (rec->usage < usage)
417 if (rec->selector > selector)
419 if (rec->selector < selector)
421 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
426 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
428 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
431 dane->umask |= DANETLS_USAGE_BIT(usage);
437 * Return 0 if there is only one version configured and it was disabled
438 * at configure time. Return 1 otherwise.
440 static int ssl_check_allowed_versions(int min_version, int max_version)
442 int minisdtls = 0, maxisdtls = 0;
444 /* Figure out if we're doing DTLS versions or TLS versions */
445 if (min_version == DTLS1_BAD_VER
446 || min_version >> 8 == DTLS1_VERSION_MAJOR)
448 if (max_version == DTLS1_BAD_VER
449 || max_version >> 8 == DTLS1_VERSION_MAJOR)
451 /* A wildcard version of 0 could be DTLS or TLS. */
452 if ((minisdtls && !maxisdtls && max_version != 0)
453 || (maxisdtls && !minisdtls && min_version != 0)) {
454 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
458 if (minisdtls || maxisdtls) {
459 /* Do DTLS version checks. */
460 if (min_version == 0)
461 /* Ignore DTLS1_BAD_VER */
462 min_version = DTLS1_VERSION;
463 if (max_version == 0)
464 max_version = DTLS1_2_VERSION;
465 #ifdef OPENSSL_NO_DTLS1_2
466 if (max_version == DTLS1_2_VERSION)
467 max_version = DTLS1_VERSION;
469 #ifdef OPENSSL_NO_DTLS1
470 if (min_version == DTLS1_VERSION)
471 min_version = DTLS1_2_VERSION;
473 /* Done massaging versions; do the check. */
475 #ifdef OPENSSL_NO_DTLS1
476 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
477 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
479 #ifdef OPENSSL_NO_DTLS1_2
480 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
481 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
486 /* Regular TLS version checks. */
487 if (min_version == 0)
488 min_version = SSL3_VERSION;
489 if (max_version == 0)
490 max_version = TLS1_3_VERSION;
491 #ifdef OPENSSL_NO_TLS1_3
492 if (max_version == TLS1_3_VERSION)
493 max_version = TLS1_2_VERSION;
495 #ifdef OPENSSL_NO_TLS1_2
496 if (max_version == TLS1_2_VERSION)
497 max_version = TLS1_1_VERSION;
499 #ifdef OPENSSL_NO_TLS1_1
500 if (max_version == TLS1_1_VERSION)
501 max_version = TLS1_VERSION;
503 #ifdef OPENSSL_NO_TLS1
504 if (max_version == TLS1_VERSION)
505 max_version = SSL3_VERSION;
507 #ifdef OPENSSL_NO_SSL3
508 if (min_version == SSL3_VERSION)
509 min_version = TLS1_VERSION;
511 #ifdef OPENSSL_NO_TLS1
512 if (min_version == TLS1_VERSION)
513 min_version = TLS1_1_VERSION;
515 #ifdef OPENSSL_NO_TLS1_1
516 if (min_version == TLS1_1_VERSION)
517 min_version = TLS1_2_VERSION;
519 #ifdef OPENSSL_NO_TLS1_2
520 if (min_version == TLS1_2_VERSION)
521 min_version = TLS1_3_VERSION;
523 /* Done massaging versions; do the check. */
525 #ifdef OPENSSL_NO_SSL3
526 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
528 #ifdef OPENSSL_NO_TLS1
529 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
531 #ifdef OPENSSL_NO_TLS1_1
532 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
534 #ifdef OPENSSL_NO_TLS1_2
535 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
537 #ifdef OPENSSL_NO_TLS1_3
538 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
546 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
548 * Define a VPROC function for HP NonStop build ssl library.
549 * This is used by platform version identification tools.
550 * Do not inline this procedure or make it static.
552 # define OPENSSL_VPROC_STRING_(x) x##_SSL
553 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
554 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
555 void OPENSSL_VPROC_FUNC(void) {}
559 static void clear_ciphers(SSL_CONNECTION *s)
561 /* clear the current cipher */
562 ssl_clear_cipher_ctx(s);
563 ssl_clear_hash_ctx(&s->read_hash);
564 ssl_clear_hash_ctx(&s->write_hash);
567 int SSL_clear(SSL *s)
569 if (s->method == NULL) {
570 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
574 return s->method->ssl_reset(s);
577 int ossl_ssl_connection_reset(SSL *s)
579 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
584 if (ssl_clear_bad_session(sc)) {
585 SSL_SESSION_free(sc->session);
588 SSL_SESSION_free(sc->psksession);
589 sc->psksession = NULL;
590 OPENSSL_free(sc->psksession_id);
591 sc->psksession_id = NULL;
592 sc->psksession_id_len = 0;
593 sc->hello_retry_request = 0;
594 sc->sent_tickets = 0;
600 if (sc->renegotiate) {
601 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
605 ossl_statem_clear(sc);
607 /* TODO(QUIC): Version handling not yet clear */
608 sc->version = s->method->version;
609 sc->client_version = sc->version;
610 sc->rwstate = SSL_NOTHING;
612 BUF_MEM_free(sc->init_buf);
615 sc->first_packet = 0;
617 sc->key_update = SSL_KEY_UPDATE_NONE;
618 memset(sc->ext.compress_certificate_from_peer, 0,
619 sizeof(sc->ext.compress_certificate_from_peer));
620 sc->ext.compress_certificate_sent = 0;
622 EVP_MD_CTX_free(sc->pha_dgst);
625 /* Reset DANE verification result state */
628 X509_free(sc->dane.mcert);
629 sc->dane.mcert = NULL;
630 sc->dane.mtlsa = NULL;
632 /* Clear the verification result peername */
633 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
635 /* Clear any shared connection state */
636 OPENSSL_free(sc->shared_sigalgs);
637 sc->shared_sigalgs = NULL;
638 sc->shared_sigalgslen = 0;
641 * Check to see if we were changed into a different method, if so, revert
644 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
645 s->method->ssl_deinit(s);
646 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
647 if (!s->method->ssl_init(s))
650 if (!s->method->ssl_clear(s))
654 RECORD_LAYER_clear(&sc->rlayer);
655 BIO_free(sc->rlayer.rrlnext);
656 sc->rlayer.rrlnext = NULL;
658 if (!ssl_set_new_record_layer(sc,
659 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
660 OSSL_RECORD_DIRECTION_READ,
661 OSSL_RECORD_PROTECTION_LEVEL_NONE,
662 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
663 NID_undef, NULL, NULL)) {
664 /* SSLfatal already called */
667 if (!ssl_set_new_record_layer(sc,
668 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
669 OSSL_RECORD_DIRECTION_WRITE,
670 OSSL_RECORD_PROTECTION_LEVEL_NONE,
671 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
672 NID_undef, NULL, NULL)) {
673 /* SSLfatal already called */
680 #ifndef OPENSSL_NO_DEPRECATED_3_0
681 /** Used to change an SSL_CTXs default SSL method type */
682 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
684 STACK_OF(SSL_CIPHER) *sk;
688 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
689 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
692 sk = ssl_create_cipher_list(ctx,
693 ctx->tls13_ciphersuites,
695 &(ctx->cipher_list_by_id),
696 OSSL_default_cipher_list(), ctx->cert);
697 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
698 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
705 SSL *SSL_new(SSL_CTX *ctx)
708 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
711 if (ctx->method == NULL) {
712 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
715 return ctx->method->ssl_new(ctx);
718 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
723 ssl->lock = CRYPTO_THREAD_lock_new();
724 if (ssl->lock == NULL)
730 ssl->method = ctx->method;
732 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
738 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
743 s = OPENSSL_zalloc(sizeof(*s));
748 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
754 #ifndef OPENSSL_NO_QUIC
755 /* set the parent (user visible) ssl to self */
759 RECORD_LAYER_init(&s->rlayer, s);
761 s->options = ctx->options;
762 s->dane.flags = ctx->dane.flags;
763 s->min_proto_version = ctx->min_proto_version;
764 s->max_proto_version = ctx->max_proto_version;
766 s->max_cert_list = ctx->max_cert_list;
767 s->max_early_data = ctx->max_early_data;
768 s->recv_max_early_data = ctx->recv_max_early_data;
769 s->num_tickets = ctx->num_tickets;
770 s->pha_enabled = ctx->pha_enabled;
772 /* Shallow copy of the ciphersuites stack */
773 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
774 if (s->tls13_ciphersuites == NULL)
778 * Earlier library versions used to copy the pointer to the CERT, not
779 * its contents; only when setting new parameters for the per-SSL
780 * copy, ssl_cert_new would be called (and the direct reference to
781 * the per-SSL_CTX settings would be lost, but those still were
782 * indirectly accessed for various purposes, and for that reason they
783 * used to be known as s->ctx->default_cert). Now we don't look at the
784 * SSL_CTX's CERT after having duplicated it once.
786 s->cert = ssl_cert_dup(ctx->cert);
790 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
791 s->msg_callback = ctx->msg_callback;
792 s->msg_callback_arg = ctx->msg_callback_arg;
793 s->verify_mode = ctx->verify_mode;
794 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
795 s->rlayer.record_padding_cb = ctx->record_padding_cb;
796 s->rlayer.record_padding_arg = ctx->record_padding_arg;
797 s->rlayer.block_padding = ctx->block_padding;
798 s->sid_ctx_length = ctx->sid_ctx_length;
799 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
801 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
802 s->verify_callback = ctx->default_verify_callback;
803 s->generate_session_id = ctx->generate_session_id;
805 s->param = X509_VERIFY_PARAM_new();
806 if (s->param == NULL)
808 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
809 s->quiet_shutdown = ctx->quiet_shutdown;
811 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
812 s->max_send_fragment = ctx->max_send_fragment;
813 s->split_send_fragment = ctx->split_send_fragment;
814 s->max_pipelines = ctx->max_pipelines;
815 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
818 s->ext.debug_arg = NULL;
819 s->ext.ticket_expected = 0;
820 s->ext.status_type = ctx->ext.status_type;
821 s->ext.status_expected = 0;
822 s->ext.ocsp.ids = NULL;
823 s->ext.ocsp.exts = NULL;
824 s->ext.ocsp.resp = NULL;
825 s->ext.ocsp.resp_len = 0;
827 s->session_ctx = ctx;
828 if (ctx->ext.ecpointformats) {
829 s->ext.ecpointformats =
830 OPENSSL_memdup(ctx->ext.ecpointformats,
831 ctx->ext.ecpointformats_len);
832 if (!s->ext.ecpointformats) {
833 s->ext.ecpointformats_len = 0;
836 s->ext.ecpointformats_len =
837 ctx->ext.ecpointformats_len;
839 if (ctx->ext.supportedgroups) {
840 s->ext.supportedgroups =
841 OPENSSL_memdup(ctx->ext.supportedgroups,
842 ctx->ext.supportedgroups_len
843 * sizeof(*ctx->ext.supportedgroups));
844 if (!s->ext.supportedgroups) {
845 s->ext.supportedgroups_len = 0;
848 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
851 #ifndef OPENSSL_NO_NEXTPROTONEG
855 if (ctx->ext.alpn != NULL) {
856 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
857 if (s->ext.alpn == NULL) {
861 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
862 s->ext.alpn_len = ctx->ext.alpn_len;
865 s->verified_chain = NULL;
866 s->verify_result = X509_V_OK;
868 s->default_passwd_callback = ctx->default_passwd_callback;
869 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
871 s->key_update = SSL_KEY_UPDATE_NONE;
873 s->allow_early_data_cb = ctx->allow_early_data_cb;
874 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
876 if (!ssl->method->ssl_init(ssl))
879 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
884 #ifndef OPENSSL_NO_PSK
885 s->psk_client_callback = ctx->psk_client_callback;
886 s->psk_server_callback = ctx->psk_server_callback;
888 s->psk_find_session_cb = ctx->psk_find_session_cb;
889 s->psk_use_session_cb = ctx->psk_use_session_cb;
891 s->async_cb = ctx->async_cb;
892 s->async_cb_arg = ctx->async_cb_arg;
896 #ifndef OPENSSL_NO_COMP_ALG
897 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
900 #ifndef OPENSSL_NO_CT
901 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
902 ctx->ct_validation_callback_arg))
908 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
911 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
914 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
920 int SSL_is_dtls(const SSL *s)
922 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
927 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
930 int SSL_up_ref(SSL *s)
934 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
937 REF_PRINT_COUNT("SSL", s);
938 REF_ASSERT_ISNT(i < 2);
939 return ((i > 1) ? 1 : 0);
942 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
943 unsigned int sid_ctx_len)
945 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
946 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
949 ctx->sid_ctx_length = sid_ctx_len;
950 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
955 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
956 unsigned int sid_ctx_len)
958 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
963 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
964 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
967 sc->sid_ctx_length = sid_ctx_len;
968 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
973 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
975 if (!CRYPTO_THREAD_write_lock(ctx->lock))
977 ctx->generate_session_id = cb;
978 CRYPTO_THREAD_unlock(ctx->lock);
982 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
984 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
986 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
988 sc->generate_session_id = cb;
989 CRYPTO_THREAD_unlock(ssl->lock);
993 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
997 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
998 * we can "construct" a session to give us the desired check - i.e. to
999 * find if there's a session in the hash table that would conflict with
1000 * any new session built out of this id/id_len and the ssl_version in use
1004 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
1006 if (sc == NULL || id_len > sizeof(r.session_id))
1009 r.ssl_version = sc->version;
1010 r.session_id_length = id_len;
1011 memcpy(r.session_id, id, id_len);
1013 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1015 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1016 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1020 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1022 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1025 int SSL_set_purpose(SSL *s, int purpose)
1027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1032 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1035 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1037 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1040 int SSL_set_trust(SSL *s, int trust)
1042 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1047 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1050 int SSL_set1_host(SSL *s, const char *hostname)
1052 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1057 /* If a hostname is provided and parses as an IP address,
1058 * treat it as such. */
1059 if (hostname != NULL
1060 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1063 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1066 int SSL_add1_host(SSL *s, const char *hostname)
1068 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1073 /* If a hostname is provided and parses as an IP address,
1074 * treat it as such. */
1077 ASN1_OCTET_STRING *ip;
1080 ip = a2i_IPADDRESS(hostname);
1082 /* We didn't want it; only to check if it *is* an IP address */
1083 ASN1_OCTET_STRING_free(ip);
1085 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1088 OPENSSL_free(old_ip);
1089 /* There can be only one IP address */
1093 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1097 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1100 void SSL_set_hostflags(SSL *s, unsigned int flags)
1102 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1107 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1110 const char *SSL_get0_peername(SSL *s)
1112 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1117 return X509_VERIFY_PARAM_get0_peername(sc->param);
1120 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1122 return dane_ctx_enable(&ctx->dane);
1125 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1127 unsigned long orig = ctx->dane.flags;
1129 ctx->dane.flags |= flags;
1133 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1135 unsigned long orig = ctx->dane.flags;
1137 ctx->dane.flags &= ~flags;
1141 int SSL_dane_enable(SSL *s, const char *basedomain)
1144 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1150 if (s->ctx->dane.mdmax == 0) {
1151 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1154 if (dane->trecs != NULL) {
1155 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1160 * Default SNI name. This rejects empty names, while set1_host below
1161 * accepts them and disables hostname checks. To avoid side-effects with
1162 * invalid input, set the SNI name first.
1164 if (sc->ext.hostname == NULL) {
1165 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1166 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1171 /* Primary RFC6125 reference identifier */
1172 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1173 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1179 dane->dctx = &s->ctx->dane;
1180 dane->trecs = sk_danetls_record_new_null();
1182 if (dane->trecs == NULL) {
1183 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1189 unsigned long SSL_dane_set_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 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1206 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1211 orig = sc->dane.flags;
1213 sc->dane.flags &= ~flags;
1217 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1220 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1227 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1231 *mcert = dane->mcert;
1233 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1238 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1239 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1242 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1249 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1253 *usage = dane->mtlsa->usage;
1255 *selector = dane->mtlsa->selector;
1257 *mtype = dane->mtlsa->mtype;
1259 *data = dane->mtlsa->data;
1261 *dlen = dane->mtlsa->dlen;
1266 SSL_DANE *SSL_get0_dane(SSL *s)
1268 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1276 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1277 uint8_t mtype, const unsigned char *data, size_t dlen)
1279 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1284 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1287 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1290 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1293 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1295 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1298 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1300 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1305 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1308 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1313 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1315 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1323 void SSL_certs_clear(SSL *s)
1325 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1330 ssl_cert_clear_certs(sc->cert);
1333 void SSL_free(SSL *s)
1339 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1340 REF_PRINT_COUNT("SSL", s);
1343 REF_ASSERT_ISNT(i < 0);
1345 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1347 if (s->method != NULL)
1348 s->method->ssl_free(s);
1350 SSL_CTX_free(s->ctx);
1351 CRYPTO_THREAD_lock_free(s->lock);
1356 void ossl_ssl_connection_free(SSL *ssl)
1360 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1364 X509_VERIFY_PARAM_free(s->param);
1365 dane_final(&s->dane);
1367 /* Ignore return value */
1368 ssl_free_wbio_buffer(s);
1370 RECORD_LAYER_clear(&s->rlayer);
1372 BIO_free_all(s->wbio);
1374 BIO_free_all(s->rbio);
1377 BUF_MEM_free(s->init_buf);
1379 /* add extra stuff */
1380 sk_SSL_CIPHER_free(s->cipher_list);
1381 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1382 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1383 sk_SSL_CIPHER_free(s->peer_ciphers);
1385 /* Make the next call work :-) */
1386 if (s->session != NULL) {
1387 ssl_clear_bad_session(s);
1388 SSL_SESSION_free(s->session);
1390 SSL_SESSION_free(s->psksession);
1391 OPENSSL_free(s->psksession_id);
1395 ssl_cert_free(s->cert);
1396 OPENSSL_free(s->shared_sigalgs);
1397 /* Free up if allocated */
1399 OPENSSL_free(s->ext.hostname);
1400 SSL_CTX_free(s->session_ctx);
1401 OPENSSL_free(s->ext.ecpointformats);
1402 OPENSSL_free(s->ext.peer_ecpointformats);
1403 OPENSSL_free(s->ext.supportedgroups);
1404 OPENSSL_free(s->ext.peer_supportedgroups);
1405 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1406 #ifndef OPENSSL_NO_OCSP
1407 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1409 #ifndef OPENSSL_NO_CT
1410 SCT_LIST_free(s->scts);
1411 OPENSSL_free(s->ext.scts);
1413 OPENSSL_free(s->ext.ocsp.resp);
1414 OPENSSL_free(s->ext.alpn);
1415 OPENSSL_free(s->ext.tls13_cookie);
1416 if (s->clienthello != NULL)
1417 OPENSSL_free(s->clienthello->pre_proc_exts);
1418 OPENSSL_free(s->clienthello);
1419 OPENSSL_free(s->pha_context);
1420 EVP_MD_CTX_free(s->pha_dgst);
1422 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1423 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1425 OSSL_STACK_OF_X509_free(s->verified_chain);
1427 if (ssl->method != NULL)
1428 ssl->method->ssl_deinit(ssl);
1430 ASYNC_WAIT_CTX_free(s->waitctx);
1432 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1433 OPENSSL_free(s->ext.npn);
1436 #ifndef OPENSSL_NO_SRTP
1437 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1441 void SSL_set0_rbio(SSL *s, BIO *rbio)
1443 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1448 BIO_free_all(sc->rbio);
1450 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1453 void SSL_set0_wbio(SSL *s, BIO *wbio)
1455 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1461 * If the output buffering BIO is still in place, remove it
1463 if (sc->bbio != NULL)
1464 sc->wbio = BIO_pop(sc->wbio);
1466 BIO_free_all(sc->wbio);
1469 /* Re-attach |bbio| to the new |wbio|. */
1470 if (sc->bbio != NULL)
1471 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1473 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1476 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1479 * For historical reasons, this function has many different cases in
1480 * ownership handling.
1483 /* If nothing has changed, do nothing */
1484 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1488 * If the two arguments are equal then one fewer reference is granted by the
1489 * caller than we want to take
1491 if (rbio != NULL && rbio == wbio)
1495 * If only the wbio is changed only adopt one reference.
1497 if (rbio == SSL_get_rbio(s)) {
1498 SSL_set0_wbio(s, wbio);
1502 * There is an asymmetry here for historical reasons. If only the rbio is
1503 * changed AND the rbio and wbio were originally different, then we only
1504 * adopt one reference.
1506 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1507 SSL_set0_rbio(s, rbio);
1511 /* Otherwise, adopt both references. */
1512 SSL_set0_rbio(s, rbio);
1513 SSL_set0_wbio(s, wbio);
1516 BIO *SSL_get_rbio(const SSL *s)
1518 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1526 BIO *SSL_get_wbio(const SSL *s)
1528 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1533 if (sc->bbio != NULL) {
1535 * If |bbio| is active, the true caller-configured BIO is its
1538 return BIO_next(sc->bbio);
1543 int SSL_get_fd(const SSL *s)
1545 return SSL_get_rfd(s);
1548 int SSL_get_rfd(const SSL *s)
1553 b = SSL_get_rbio(s);
1554 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1556 BIO_get_fd(r, &ret);
1560 int SSL_get_wfd(const SSL *s)
1565 b = SSL_get_wbio(s);
1566 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1568 BIO_get_fd(r, &ret);
1572 #ifndef OPENSSL_NO_SOCK
1573 int SSL_set_fd(SSL *s, int fd)
1578 bio = BIO_new(BIO_s_socket());
1581 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1584 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1585 SSL_set_bio(s, bio, bio);
1586 #ifndef OPENSSL_NO_KTLS
1588 * The new socket is created successfully regardless of ktls_enable.
1589 * ktls_enable doesn't change any functionality of the socket, except
1590 * changing the setsockopt to enable the processing of ktls_start.
1591 * Thus, it is not a problem to call it for non-TLS sockets.
1594 #endif /* OPENSSL_NO_KTLS */
1600 int SSL_set_wfd(SSL *s, int fd)
1602 BIO *rbio = SSL_get_rbio(s);
1604 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1605 || (int)BIO_get_fd(rbio, NULL) != fd) {
1606 BIO *bio = BIO_new(BIO_s_socket());
1609 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1612 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1613 SSL_set0_wbio(s, bio);
1614 #ifndef OPENSSL_NO_KTLS
1616 * The new socket is created successfully regardless of ktls_enable.
1617 * ktls_enable doesn't change any functionality of the socket, except
1618 * changing the setsockopt to enable the processing of ktls_start.
1619 * Thus, it is not a problem to call it for non-TLS sockets.
1622 #endif /* OPENSSL_NO_KTLS */
1625 SSL_set0_wbio(s, rbio);
1630 int SSL_set_rfd(SSL *s, int fd)
1632 BIO *wbio = SSL_get_wbio(s);
1634 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1635 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1636 BIO *bio = BIO_new(BIO_s_socket());
1639 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1642 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1643 SSL_set0_rbio(s, bio);
1646 SSL_set0_rbio(s, wbio);
1653 /* return length of latest Finished message we sent, copy to 'buf' */
1654 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1657 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1662 ret = sc->s3.tmp.finish_md_len;
1665 memcpy(buf, sc->s3.tmp.finish_md, count);
1669 /* return length of latest Finished message we expected, copy to 'buf' */
1670 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1673 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1678 ret = sc->s3.tmp.peer_finish_md_len;
1681 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1685 int SSL_get_verify_mode(const SSL *s)
1687 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1692 return sc->verify_mode;
1695 int SSL_get_verify_depth(const SSL *s)
1697 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1702 return X509_VERIFY_PARAM_get_depth(sc->param);
1705 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1706 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1711 return sc->verify_callback;
1714 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1716 return ctx->verify_mode;
1719 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1721 return X509_VERIFY_PARAM_get_depth(ctx->param);
1724 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1725 return ctx->default_verify_callback;
1728 void SSL_set_verify(SSL *s, int mode,
1729 int (*callback) (int ok, X509_STORE_CTX *ctx))
1731 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1736 sc->verify_mode = mode;
1737 if (callback != NULL)
1738 sc->verify_callback = callback;
1741 void SSL_set_verify_depth(SSL *s, int depth)
1743 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1748 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1751 void SSL_set_read_ahead(SSL *s, int yes)
1753 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1754 OSSL_PARAM options[2], *opts = options;
1759 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1761 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1762 &sc->rlayer.read_ahead);
1763 *opts = OSSL_PARAM_construct_end();
1765 /* Ignore return value */
1766 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1769 int SSL_get_read_ahead(const SSL *s)
1771 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1776 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1779 int SSL_pending(const SSL *s)
1781 size_t pending = s->method->ssl_pending(s);
1784 * SSL_pending cannot work properly if read-ahead is enabled
1785 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1786 * impossible to fix since SSL_pending cannot report errors that may be
1787 * observed while scanning the new data. (Note that SSL_pending() is
1788 * often used as a boolean value, so we'd better not return -1.)
1790 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1791 * we just return INT_MAX.
1793 return pending < INT_MAX ? (int)pending : INT_MAX;
1796 int SSL_has_pending(const SSL *s)
1799 * Similar to SSL_pending() but returns a 1 to indicate that we have
1800 * processed or unprocessed data available or 0 otherwise (as opposed to the
1801 * number of bytes available). Unlike SSL_pending() this will take into
1802 * account read_ahead data. A 1 return simply indicates that we have data.
1803 * That data may not result in any application data, or we may fail to parse
1804 * the records for some reason.
1806 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1808 /* Check buffered app data if any first */
1809 if (SSL_CONNECTION_IS_DTLS(sc)) {
1813 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1814 while ((item = pqueue_next(&iter)) != NULL) {
1816 if (rdata->length > 0)
1821 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1824 return RECORD_LAYER_read_pending(&sc->rlayer);
1827 X509 *SSL_get1_peer_certificate(const SSL *s)
1829 X509 *r = SSL_get0_peer_certificate(s);
1837 X509 *SSL_get0_peer_certificate(const SSL *s)
1839 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1844 if (sc->session == NULL)
1847 return sc->session->peer;
1850 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1853 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1858 if (sc->session == NULL)
1861 r = sc->session->peer_chain;
1864 * If we are a client, cert_chain includes the peer's own certificate; if
1865 * we are a server, it does not.
1872 * Now in theory, since the calling process own 't' it should be safe to
1873 * modify. We need to be able to read f without being hassled
1875 int SSL_copy_session_id(SSL *t, const SSL *f)
1878 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1879 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1880 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1882 if (tsc == NULL || fsc == NULL)
1885 /* Do we need to do SSL locking? */
1886 if (!SSL_set_session(t, SSL_get_session(f))) {
1891 * what if we are setup for one protocol version but want to talk another
1893 if (t->method != f->method) {
1894 t->method->ssl_deinit(t);
1895 t->method = f->method;
1896 if (t->method->ssl_init(t) == 0)
1900 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1901 ssl_cert_free(tsc->cert);
1902 tsc->cert = fsc->cert;
1903 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1910 /* Fix this so it checks all the valid key/cert options */
1911 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1913 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1914 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1917 if (ctx->cert->key->privatekey == NULL) {
1918 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1921 return X509_check_private_key
1922 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1925 /* Fix this function so that it takes an optional type parameter */
1926 int SSL_check_private_key(const SSL *ssl)
1928 const SSL_CONNECTION *sc;
1930 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1931 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1934 if (sc->cert->key->x509 == NULL) {
1935 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1938 if (sc->cert->key->privatekey == NULL) {
1939 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1942 return X509_check_private_key(sc->cert->key->x509,
1943 sc->cert->key->privatekey);
1946 int SSL_waiting_for_async(SSL *s)
1948 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1959 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
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_all_fds(ctx, fds, numfds);
1972 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1973 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1975 ASYNC_WAIT_CTX *ctx;
1976 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1981 if ((ctx = sc->waitctx) == NULL)
1983 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1987 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1989 ctx->async_cb = callback;
1993 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1995 ctx->async_cb_arg = arg;
1999 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2001 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2006 sc->async_cb = callback;
2010 int SSL_set_async_callback_arg(SSL *s, void *arg)
2012 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2017 sc->async_cb_arg = arg;
2021 int SSL_get_async_status(SSL *s, int *status)
2023 ASYNC_WAIT_CTX *ctx;
2024 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2029 if ((ctx = sc->waitctx) == NULL)
2031 *status = ASYNC_WAIT_CTX_get_status(ctx);
2035 int SSL_accept(SSL *s)
2037 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2042 if (sc->handshake_func == NULL) {
2043 /* Not properly initialized yet */
2044 SSL_set_accept_state(s);
2047 return SSL_do_handshake(s);
2050 int SSL_connect(SSL *s)
2052 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2057 if (sc->handshake_func == NULL) {
2058 /* Not properly initialized yet */
2059 SSL_set_connect_state(s);
2062 return SSL_do_handshake(s);
2065 long SSL_get_default_timeout(const SSL *s)
2067 return (long int)ossl_time2seconds(s->method->get_timeout());
2070 static int ssl_async_wait_ctx_cb(void *arg)
2072 SSL *s = (SSL *)arg;
2073 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2078 return sc->async_cb(s, sc->async_cb_arg);
2081 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2082 int (*func) (void *))
2085 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2090 if (sc->waitctx == NULL) {
2091 sc->waitctx = ASYNC_WAIT_CTX_new();
2092 if (sc->waitctx == NULL)
2094 if (sc->async_cb != NULL
2095 && !ASYNC_WAIT_CTX_set_callback
2096 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2100 sc->rwstate = SSL_NOTHING;
2101 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2102 sizeof(struct ssl_async_args))) {
2104 sc->rwstate = SSL_NOTHING;
2105 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2108 sc->rwstate = SSL_ASYNC_PAUSED;
2111 sc->rwstate = SSL_ASYNC_NO_JOBS;
2117 sc->rwstate = SSL_NOTHING;
2118 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2119 /* Shouldn't happen */
2124 static int ssl_io_intern(void *vargs)
2126 struct ssl_async_args *args;
2132 args = (struct ssl_async_args *)vargs;
2136 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2139 switch (args->type) {
2141 return args->f.func_read(s, buf, num, &sc->asyncrw);
2143 return args->f.func_write(s, buf, num, &sc->asyncrw);
2145 return args->f.func_other(s);
2150 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2152 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2157 if (sc->handshake_func == NULL) {
2158 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2162 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2163 sc->rwstate = SSL_NOTHING;
2167 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2168 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2169 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2173 * If we are a client and haven't received the ServerHello etc then we
2176 ossl_statem_check_finish_init(sc, 0);
2178 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2179 struct ssl_async_args args;
2185 args.type = READFUNC;
2186 args.f.func_read = s->method->ssl_read;
2188 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2189 *readbytes = sc->asyncrw;
2192 return s->method->ssl_read(s, buf, num, readbytes);
2196 int SSL_read(SSL *s, void *buf, int num)
2202 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2206 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2209 * The cast is safe here because ret should be <= INT_MAX because num is
2213 ret = (int)readbytes;
2218 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2220 int ret = ssl_read_internal(s, buf, num, readbytes);
2227 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2230 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2232 /* TODO(QUIC): This will need special handling for QUIC */
2237 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2238 return SSL_READ_EARLY_DATA_ERROR;
2241 switch (sc->early_data_state) {
2242 case SSL_EARLY_DATA_NONE:
2243 if (!SSL_in_before(s)) {
2244 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2245 return SSL_READ_EARLY_DATA_ERROR;
2249 case SSL_EARLY_DATA_ACCEPT_RETRY:
2250 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2251 ret = SSL_accept(s);
2254 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2255 return SSL_READ_EARLY_DATA_ERROR;
2259 case SSL_EARLY_DATA_READ_RETRY:
2260 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2261 sc->early_data_state = SSL_EARLY_DATA_READING;
2262 ret = SSL_read_ex(s, buf, num, readbytes);
2264 * State machine will update early_data_state to
2265 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2268 if (ret > 0 || (ret <= 0 && sc->early_data_state
2269 != SSL_EARLY_DATA_FINISHED_READING)) {
2270 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2271 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2272 : SSL_READ_EARLY_DATA_ERROR;
2275 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2278 return SSL_READ_EARLY_DATA_FINISH;
2281 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2282 return SSL_READ_EARLY_DATA_ERROR;
2286 int SSL_get_early_data_status(const SSL *s)
2288 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2290 /* TODO(QUIC): This will need special handling for QUIC */
2294 return sc->ext.early_data;
2297 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2299 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2304 if (sc->handshake_func == NULL) {
2305 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2309 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2312 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2313 struct ssl_async_args args;
2319 args.type = READFUNC;
2320 args.f.func_read = s->method->ssl_peek;
2322 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2323 *readbytes = sc->asyncrw;
2326 return s->method->ssl_peek(s, buf, num, readbytes);
2330 int SSL_peek(SSL *s, void *buf, int num)
2336 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2340 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2343 * The cast is safe here because ret should be <= INT_MAX because num is
2347 ret = (int)readbytes;
2353 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2355 int ret = ssl_peek_internal(s, buf, num, readbytes);
2362 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2364 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2369 if (sc->handshake_func == NULL) {
2370 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2374 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2375 sc->rwstate = SSL_NOTHING;
2376 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2380 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2381 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2382 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2383 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2386 /* If we are a client and haven't sent the Finished we better do that */
2387 ossl_statem_check_finish_init(sc, 1);
2389 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2391 struct ssl_async_args args;
2394 args.buf = (void *)buf;
2396 args.type = WRITEFUNC;
2397 args.f.func_write = s->method->ssl_write;
2399 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2400 *written = sc->asyncrw;
2403 return s->method->ssl_write(s, buf, num, written);
2407 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2410 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2415 if (sc->handshake_func == NULL) {
2416 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2420 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2421 sc->rwstate = SSL_NOTHING;
2422 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2426 if (!BIO_get_ktls_send(sc->wbio)) {
2427 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2431 /* If we have an alert to send, lets send it */
2432 if (sc->s3.alert_dispatch) {
2433 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2435 /* SSLfatal() already called if appropriate */
2438 /* if it went, fall through and send more stuff */
2441 sc->rwstate = SSL_WRITING;
2442 if (BIO_flush(sc->wbio) <= 0) {
2443 if (!BIO_should_retry(sc->wbio)) {
2444 sc->rwstate = SSL_NOTHING;
2447 set_sys_error(EAGAIN);
2453 #ifdef OPENSSL_NO_KTLS
2454 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2455 "can't call ktls_sendfile(), ktls disabled");
2458 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2460 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2461 if ((get_last_sys_error() == EAGAIN) ||
2462 (get_last_sys_error() == EINTR) ||
2463 (get_last_sys_error() == EBUSY))
2464 BIO_set_retry_write(sc->wbio);
2467 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2470 sc->rwstate = SSL_NOTHING;
2475 int SSL_write(SSL *s, const void *buf, int num)
2481 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2485 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2488 * The cast is safe here because ret should be <= INT_MAX because num is
2497 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2499 int ret = ssl_write_internal(s, buf, num, written);
2506 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2508 int ret, early_data_state;
2510 uint32_t partialwrite;
2511 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2513 /* TODO(QUIC): This will need special handling for QUIC */
2517 switch (sc->early_data_state) {
2518 case SSL_EARLY_DATA_NONE:
2520 || !SSL_in_before(s)
2521 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2522 && (sc->psk_use_session_cb == NULL))) {
2523 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2528 case SSL_EARLY_DATA_CONNECT_RETRY:
2529 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2530 ret = SSL_connect(s);
2533 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2538 case SSL_EARLY_DATA_WRITE_RETRY:
2539 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2541 * We disable partial write for early data because we don't keep track
2542 * of how many bytes we've written between the SSL_write_ex() call and
2543 * the flush if the flush needs to be retried)
2545 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2546 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2547 ret = SSL_write_ex(s, buf, num, &writtmp);
2548 sc->mode |= partialwrite;
2550 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2553 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2556 case SSL_EARLY_DATA_WRITE_FLUSH:
2557 /* The buffering BIO is still in place so we need to flush it */
2558 if (statem_flush(sc) != 1)
2561 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2564 case SSL_EARLY_DATA_FINISHED_READING:
2565 case SSL_EARLY_DATA_READ_RETRY:
2566 early_data_state = sc->early_data_state;
2567 /* We are a server writing to an unauthenticated client */
2568 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2569 ret = SSL_write_ex(s, buf, num, written);
2570 /* The buffering BIO is still in place */
2572 (void)BIO_flush(sc->wbio);
2573 sc->early_data_state = early_data_state;
2577 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2582 int SSL_shutdown(SSL *s)
2585 * Note that this function behaves differently from what one might
2586 * expect. Return values are 0 for no success (yet), 1 for success; but
2587 * calling it once is usually not enough, even if blocking I/O is used
2588 * (see ssl3_shutdown).
2590 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2595 if (sc->handshake_func == NULL) {
2596 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2600 if (!SSL_in_init(s)) {
2601 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2602 struct ssl_async_args args;
2604 memset(&args, 0, sizeof(args));
2606 args.type = OTHERFUNC;
2607 args.f.func_other = s->method->ssl_shutdown;
2609 return ssl_start_async_job(s, &args, ssl_io_intern);
2611 return s->method->ssl_shutdown(s);
2614 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2619 int SSL_key_update(SSL *s, int updatetype)
2621 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2626 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2627 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2631 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2632 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2633 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2637 if (!SSL_is_init_finished(s)) {
2638 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2642 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2643 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2647 ossl_statem_set_in_init(sc, 1);
2648 sc->key_update = updatetype;
2652 int SSL_get_key_update_type(const SSL *s)
2654 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2659 return sc->key_update;
2663 * Can we accept a renegotiation request? If yes, set the flag and
2664 * return 1 if yes. If not, raise error and return 0.
2666 static int can_renegotiate(const SSL_CONNECTION *sc)
2668 if (SSL_CONNECTION_IS_TLS13(sc)) {
2669 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2673 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2674 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2681 int SSL_renegotiate(SSL *s)
2683 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2688 if (!can_renegotiate(sc))
2691 sc->renegotiate = 1;
2692 sc->new_session = 1;
2693 return s->method->ssl_renegotiate(s);
2696 int SSL_renegotiate_abbreviated(SSL *s)
2698 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2703 if (!can_renegotiate(sc))
2706 sc->renegotiate = 1;
2707 sc->new_session = 0;
2708 return s->method->ssl_renegotiate(s);
2711 int SSL_renegotiate_pending(const SSL *s)
2713 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2719 * becomes true when negotiation is requested; false again once a
2720 * handshake has finished
2722 return (sc->renegotiate != 0);
2725 int SSL_new_session_ticket(SSL *s)
2727 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2732 /* If we are in init because we're sending tickets, okay to send more. */
2733 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2734 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2735 || !SSL_CONNECTION_IS_TLS13(sc))
2737 sc->ext.extra_tickets_expected++;
2738 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2739 ossl_statem_set_in_init(sc, 1);
2743 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2746 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2748 /* TODO(QUIC): Special handling for some ctrls will be needed */
2753 case SSL_CTRL_GET_READ_AHEAD:
2754 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2755 case SSL_CTRL_SET_READ_AHEAD:
2756 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2757 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2760 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2761 sc->msg_callback_arg = parg;
2766 OSSL_PARAM options[2], *opts = options;
2770 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2772 *opts = OSSL_PARAM_construct_end();
2774 /* Ignore return value */
2775 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2779 case SSL_CTRL_CLEAR_MODE:
2780 return (sc->mode &= ~larg);
2781 case SSL_CTRL_GET_MAX_CERT_LIST:
2782 return (long)sc->max_cert_list;
2783 case SSL_CTRL_SET_MAX_CERT_LIST:
2786 l = (long)sc->max_cert_list;
2787 sc->max_cert_list = (size_t)larg;
2789 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2790 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2792 #ifndef OPENSSL_NO_KTLS
2793 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2795 #endif /* OPENSSL_NO_KTLS */
2796 sc->max_send_fragment = larg;
2797 if (sc->max_send_fragment < sc->split_send_fragment)
2798 sc->split_send_fragment = sc->max_send_fragment;
2799 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2801 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2802 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2804 sc->split_send_fragment = larg;
2806 case SSL_CTRL_SET_MAX_PIPELINES:
2807 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2809 sc->max_pipelines = larg;
2810 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2811 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2813 case SSL_CTRL_GET_RI_SUPPORT:
2814 return sc->s3.send_connection_binding;
2815 case SSL_CTRL_SET_RETRY_VERIFY:
2816 sc->rwstate = SSL_RETRY_VERIFY;
2818 case SSL_CTRL_CERT_FLAGS:
2819 return (sc->cert->cert_flags |= larg);
2820 case SSL_CTRL_CLEAR_CERT_FLAGS:
2821 return (sc->cert->cert_flags &= ~larg);
2823 case SSL_CTRL_GET_RAW_CIPHERLIST:
2825 if (sc->s3.tmp.ciphers_raw == NULL)
2827 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2828 return (int)sc->s3.tmp.ciphers_rawlen;
2830 return TLS_CIPHER_LEN;
2832 case SSL_CTRL_GET_EXTMS_SUPPORT:
2833 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2835 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2839 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2840 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2841 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2842 &sc->min_proto_version);
2843 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2844 return sc->min_proto_version;
2845 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2846 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2847 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2848 &sc->max_proto_version);
2849 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2850 return sc->max_proto_version;
2852 return s->method->ssl_ctrl(s, cmd, larg, parg);
2856 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2858 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2864 case SSL_CTRL_SET_MSG_CALLBACK:
2865 sc->msg_callback = (void (*)
2866 (int write_p, int version, int content_type,
2867 const void *buf, size_t len, SSL *ssl,
2872 return s->method->ssl_callback_ctrl(s, cmd, fp);
2876 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2878 return ctx->sessions;
2881 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2885 if (ssl_tsan_lock(ctx)) {
2886 res = tsan_load(stat);
2887 ssl_tsan_unlock(ctx);
2892 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2895 /* For some cases with ctx == NULL perform syntax checks */
2898 case SSL_CTRL_SET_GROUPS_LIST:
2899 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2900 case SSL_CTRL_SET_SIGALGS_LIST:
2901 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2902 return tls1_set_sigalgs_list(NULL, parg, 0);
2909 case SSL_CTRL_GET_READ_AHEAD:
2910 return ctx->read_ahead;
2911 case SSL_CTRL_SET_READ_AHEAD:
2912 l = ctx->read_ahead;
2913 ctx->read_ahead = larg;
2916 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2917 ctx->msg_callback_arg = parg;
2920 case SSL_CTRL_GET_MAX_CERT_LIST:
2921 return (long)ctx->max_cert_list;
2922 case SSL_CTRL_SET_MAX_CERT_LIST:
2925 l = (long)ctx->max_cert_list;
2926 ctx->max_cert_list = (size_t)larg;
2929 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2932 l = (long)ctx->session_cache_size;
2933 ctx->session_cache_size = (size_t)larg;
2935 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2936 return (long)ctx->session_cache_size;
2937 case SSL_CTRL_SET_SESS_CACHE_MODE:
2938 l = ctx->session_cache_mode;
2939 ctx->session_cache_mode = larg;
2941 case SSL_CTRL_GET_SESS_CACHE_MODE:
2942 return ctx->session_cache_mode;
2944 case SSL_CTRL_SESS_NUMBER:
2945 return lh_SSL_SESSION_num_items(ctx->sessions);
2946 case SSL_CTRL_SESS_CONNECT:
2947 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2948 case SSL_CTRL_SESS_CONNECT_GOOD:
2949 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2950 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2951 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2952 case SSL_CTRL_SESS_ACCEPT:
2953 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2954 case SSL_CTRL_SESS_ACCEPT_GOOD:
2955 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2956 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2957 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2958 case SSL_CTRL_SESS_HIT:
2959 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2960 case SSL_CTRL_SESS_CB_HIT:
2961 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2962 case SSL_CTRL_SESS_MISSES:
2963 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2964 case SSL_CTRL_SESS_TIMEOUTS:
2965 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2966 case SSL_CTRL_SESS_CACHE_FULL:
2967 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2969 return (ctx->mode |= larg);
2970 case SSL_CTRL_CLEAR_MODE:
2971 return (ctx->mode &= ~larg);
2972 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2973 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2975 ctx->max_send_fragment = larg;
2976 if (ctx->max_send_fragment < ctx->split_send_fragment)
2977 ctx->split_send_fragment = ctx->max_send_fragment;
2979 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2980 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2982 ctx->split_send_fragment = larg;
2984 case SSL_CTRL_SET_MAX_PIPELINES:
2985 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2987 ctx->max_pipelines = larg;
2989 case SSL_CTRL_CERT_FLAGS:
2990 return (ctx->cert->cert_flags |= larg);
2991 case SSL_CTRL_CLEAR_CERT_FLAGS:
2992 return (ctx->cert->cert_flags &= ~larg);
2993 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2994 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2995 && ssl_set_version_bound(ctx->method->version, (int)larg,
2996 &ctx->min_proto_version);
2997 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2998 return ctx->min_proto_version;
2999 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3000 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3001 && ssl_set_version_bound(ctx->method->version, (int)larg,
3002 &ctx->max_proto_version);
3003 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3004 return ctx->max_proto_version;
3006 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3010 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3013 case SSL_CTRL_SET_MSG_CALLBACK:
3014 ctx->msg_callback = (void (*)
3015 (int write_p, int version, int content_type,
3016 const void *buf, size_t len, SSL *ssl,
3021 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3025 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3034 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3035 const SSL_CIPHER *const *bp)
3037 if ((*ap)->id > (*bp)->id)
3039 if ((*ap)->id < (*bp)->id)
3045 * return a STACK of the ciphers available for the SSL and in order of
3048 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3050 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3053 if (sc->cipher_list != NULL) {
3054 return sc->cipher_list;
3055 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3056 return s->ctx->cipher_list;
3062 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3064 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3066 if (sc == NULL || !sc->server)
3068 return sc->peer_ciphers;
3071 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3073 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3075 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3080 ciphers = SSL_get_ciphers(s);
3083 if (!ssl_set_client_disabled(sc))
3085 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3086 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3087 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3089 sk = sk_SSL_CIPHER_new_null();
3092 if (!sk_SSL_CIPHER_push(sk, c)) {
3093 sk_SSL_CIPHER_free(sk);
3101 /** return a STACK of the ciphers available for the SSL and in order of
3103 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3106 if (s->cipher_list_by_id != NULL)
3107 return s->cipher_list_by_id;
3108 else if (s->ssl.ctx != NULL
3109 && s->ssl.ctx->cipher_list_by_id != NULL)
3110 return s->ssl.ctx->cipher_list_by_id;
3115 /** The old interface to get the same thing as SSL_get_ciphers() */
3116 const char *SSL_get_cipher_list(const SSL *s, int n)
3118 const SSL_CIPHER *c;
3119 STACK_OF(SSL_CIPHER) *sk;
3123 sk = SSL_get_ciphers(s);
3124 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3126 c = sk_SSL_CIPHER_value(sk, n);
3132 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3134 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3137 return ctx->cipher_list;
3142 * Distinguish between ciphers controlled by set_ciphersuite() and
3143 * set_cipher_list() when counting.
3145 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3148 const SSL_CIPHER *c;
3152 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3153 c = sk_SSL_CIPHER_value(sk, i);
3154 if (c->min_tls >= TLS1_3_VERSION)
3161 /** specify the ciphers to be used by default by the SSL_CTX */
3162 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3164 STACK_OF(SSL_CIPHER) *sk;
3166 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3167 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3170 * ssl_create_cipher_list may return an empty stack if it was unable to
3171 * find a cipher matching the given rule string (for example if the rule
3172 * string specifies a cipher which has been disabled). This is not an
3173 * error as far as ssl_create_cipher_list is concerned, and hence
3174 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3178 else if (cipher_list_tls12_num(sk) == 0) {
3179 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3185 /** specify the ciphers to be used by the SSL */
3186 int SSL_set_cipher_list(SSL *s, const char *str)
3188 STACK_OF(SSL_CIPHER) *sk;
3189 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3194 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3195 &sc->cipher_list, &sc->cipher_list_by_id, str,
3197 /* see comment in SSL_CTX_set_cipher_list */
3200 else if (cipher_list_tls12_num(sk) == 0) {
3201 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3207 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3210 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3211 const SSL_CIPHER *c;
3213 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3219 || sc->peer_ciphers == NULL
3224 clntsk = sc->peer_ciphers;
3225 srvrsk = SSL_get_ciphers(s);
3226 if (clntsk == NULL || srvrsk == NULL)
3229 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3232 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3235 c = sk_SSL_CIPHER_value(clntsk, i);
3236 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3239 n = strlen(c->name);
3256 * Return the requested servername (SNI) value. Note that the behaviour varies
3258 * - whether this is called by the client or the server,
3259 * - if we are before or during/after the handshake,
3260 * - if a resumption or normal handshake is being attempted/has occurred
3261 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3263 * Note that only the host_name type is defined (RFC 3546).
3265 const char *SSL_get_servername(const SSL *s, const int type)
3267 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3274 * If we don't know if we are the client or the server yet then we assume
3277 server = sc->handshake_func == NULL ? 0 : sc->server;
3279 if (type != TLSEXT_NAMETYPE_host_name)
3285 * In TLSv1.3 on the server SNI is not associated with the session
3286 * but in TLSv1.2 or below it is.
3288 * Before the handshake:
3291 * During/after the handshake (TLSv1.2 or below resumption occurred):
3292 * - If a servername was accepted by the server in the original
3293 * handshake then it will return that servername, or NULL otherwise.
3295 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3296 * - The function will return the servername requested by the client in
3297 * this handshake or NULL if none was requested.
3299 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3300 return sc->session->ext.hostname;
3305 * Before the handshake:
3306 * - If a servername has been set via a call to
3307 * SSL_set_tlsext_host_name() then it will return that servername
3308 * - If one has not been set, but a TLSv1.2 resumption is being
3309 * attempted and the session from the original handshake had a
3310 * servername accepted by the server then it will return that
3312 * - Otherwise it returns NULL
3314 * During/after the handshake (TLSv1.2 or below resumption occurred):
3315 * - If the session from the original handshake had a servername accepted
3316 * by the server then it will return that servername.
3317 * - Otherwise it returns the servername set via
3318 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3320 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3321 * - It will return the servername set via SSL_set_tlsext_host_name()
3322 * (or NULL if it was not called).
3324 if (SSL_in_before(s)) {
3325 if (sc->ext.hostname == NULL
3326 && sc->session != NULL
3327 && sc->session->ssl_version != TLS1_3_VERSION)
3328 return sc->session->ext.hostname;
3330 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3331 && sc->session->ext.hostname != NULL)
3332 return sc->session->ext.hostname;
3336 return sc->ext.hostname;
3339 int SSL_get_servername_type(const SSL *s)
3341 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3342 return TLSEXT_NAMETYPE_host_name;
3347 * SSL_select_next_proto implements the standard protocol selection. It is
3348 * expected that this function is called from the callback set by
3349 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3350 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3351 * not included in the length. A byte string of length 0 is invalid. No byte
3352 * string may be truncated. The current, but experimental algorithm for
3353 * selecting the protocol is: 1) If the server doesn't support NPN then this
3354 * is indicated to the callback. In this case, the client application has to
3355 * abort the connection or have a default application level protocol. 2) If
3356 * the server supports NPN, but advertises an empty list then the client
3357 * selects the first protocol in its list, but indicates via the API that this
3358 * fallback case was enacted. 3) Otherwise, the client finds the first
3359 * protocol in the server's list that it supports and selects this protocol.
3360 * This is because it's assumed that the server has better information about
3361 * which protocol a client should use. 4) If the client doesn't support any
3362 * of the server's advertised protocols, then this is treated the same as
3363 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3364 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3366 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3367 const unsigned char *server,
3368 unsigned int server_len,
3369 const unsigned char *client, unsigned int client_len)
3372 const unsigned char *result;
3373 int status = OPENSSL_NPN_UNSUPPORTED;
3376 * For each protocol in server preference order, see if we support it.
3378 for (i = 0; i < server_len;) {
3379 for (j = 0; j < client_len;) {
3380 if (server[i] == client[j] &&
3381 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3382 /* We found a match */
3383 result = &server[i];
3384 status = OPENSSL_NPN_NEGOTIATED;
3394 /* There's no overlap between our protocols and the server's list. */
3396 status = OPENSSL_NPN_NO_OVERLAP;
3399 *out = (unsigned char *)result + 1;
3400 *outlen = result[0];
3404 #ifndef OPENSSL_NO_NEXTPROTONEG
3406 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3407 * client's requested protocol for this connection and returns 0. If the
3408 * client didn't request any protocol, then *data is set to NULL. Note that
3409 * the client can request any protocol it chooses. The value returned from
3410 * this function need not be a member of the list of supported protocols
3411 * provided by the callback.
3413 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3416 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3419 /* We have no other way to indicate error */
3425 *data = sc->ext.npn;
3426 if (*data == NULL) {
3429 *len = (unsigned int)sc->ext.npn_len;
3434 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3435 * a TLS server needs a list of supported protocols for Next Protocol
3436 * Negotiation. The returned list must be in wire format. The list is
3437 * returned by setting |out| to point to it and |outlen| to its length. This
3438 * memory will not be modified, but one should assume that the SSL* keeps a
3439 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3440 * wishes to advertise. Otherwise, no such extension will be included in the
3443 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3444 SSL_CTX_npn_advertised_cb_func cb,
3447 ctx->ext.npn_advertised_cb = cb;
3448 ctx->ext.npn_advertised_cb_arg = arg;
3452 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3453 * client needs to select a protocol from the server's provided list. |out|
3454 * must be set to point to the selected protocol (which may be within |in|).
3455 * The length of the protocol name must be written into |outlen|. The
3456 * server's advertised protocols are provided in |in| and |inlen|. The
3457 * callback can assume that |in| is syntactically valid. The client must
3458 * select a protocol. It is fatal to the connection if this callback returns
3459 * a value other than SSL_TLSEXT_ERR_OK.
3461 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3462 SSL_CTX_npn_select_cb_func cb,
3465 ctx->ext.npn_select_cb = cb;
3466 ctx->ext.npn_select_cb_arg = arg;
3470 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3474 if (protos_len < 2 || protos == NULL)
3477 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3478 if (protos[idx] == 0)
3481 return idx == protos_len;
3484 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3485 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3486 * length-prefixed strings). Returns 0 on success.
3488 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3489 unsigned int protos_len)
3491 unsigned char *alpn;
3493 if (protos_len == 0 || protos == NULL) {
3494 OPENSSL_free(ctx->ext.alpn);
3495 ctx->ext.alpn = NULL;
3496 ctx->ext.alpn_len = 0;
3499 /* Not valid per RFC */
3500 if (!alpn_value_ok(protos, protos_len))
3503 alpn = OPENSSL_memdup(protos, protos_len);
3506 OPENSSL_free(ctx->ext.alpn);
3507 ctx->ext.alpn = alpn;
3508 ctx->ext.alpn_len = protos_len;
3514 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3515 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3516 * length-prefixed strings). Returns 0 on success.
3518 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3519 unsigned int protos_len)
3521 unsigned char *alpn;
3522 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3527 if (protos_len == 0 || protos == NULL) {
3528 OPENSSL_free(sc->ext.alpn);
3529 sc->ext.alpn = NULL;
3530 sc->ext.alpn_len = 0;
3533 /* Not valid per RFC */
3534 if (!alpn_value_ok(protos, protos_len))
3537 alpn = OPENSSL_memdup(protos, protos_len);
3540 OPENSSL_free(sc->ext.alpn);
3541 sc->ext.alpn = alpn;
3542 sc->ext.alpn_len = protos_len;
3548 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3549 * called during ClientHello processing in order to select an ALPN protocol
3550 * from the client's list of offered protocols.
3552 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3553 SSL_CTX_alpn_select_cb_func cb,
3556 ctx->ext.alpn_select_cb = cb;
3557 ctx->ext.alpn_select_cb_arg = arg;
3561 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3562 * On return it sets |*data| to point to |*len| bytes of protocol name
3563 * (not including the leading length-prefix byte). If the server didn't
3564 * respond with a negotiated protocol then |*len| will be zero.
3566 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3569 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3572 /* We have no other way to indicate error */
3578 *data = sc->s3.alpn_selected;
3582 *len = (unsigned int)sc->s3.alpn_selected_len;
3585 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3586 const char *label, size_t llen,
3587 const unsigned char *context, size_t contextlen,
3590 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3595 if (sc->session == NULL
3596 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3599 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3601 contextlen, use_context);
3604 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3605 const char *label, size_t llen,
3606 const unsigned char *context,
3609 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3614 if (sc->version != TLS1_3_VERSION)
3617 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3618 context, contextlen);
3621 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3623 const unsigned char *session_id = a->session_id;
3625 unsigned char tmp_storage[4];
3627 if (a->session_id_length < sizeof(tmp_storage)) {
3628 memset(tmp_storage, 0, sizeof(tmp_storage));
3629 memcpy(tmp_storage, a->session_id, a->session_id_length);
3630 session_id = tmp_storage;
3634 ((unsigned long)session_id[0]) |
3635 ((unsigned long)session_id[1] << 8L) |
3636 ((unsigned long)session_id[2] << 16L) |
3637 ((unsigned long)session_id[3] << 24L);
3642 * NB: If this function (or indeed the hash function which uses a sort of
3643 * coarser function than this one) is changed, ensure
3644 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3645 * being able to construct an SSL_SESSION that will collide with any existing
3646 * session with a matching session ID.
3648 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3650 if (a->ssl_version != b->ssl_version)
3652 if (a->session_id_length != b->session_id_length)
3654 return memcmp(a->session_id, b->session_id, a->session_id_length);
3658 * These wrapper functions should remain rather than redeclaring
3659 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3660 * variable. The reason is that the functions aren't static, they're exposed
3664 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3665 const SSL_METHOD *meth)
3667 SSL_CTX *ret = NULL;
3668 #ifndef OPENSSL_NO_COMP_ALG
3673 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3677 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3680 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3681 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3684 ret = OPENSSL_zalloc(sizeof(*ret));
3688 /* Init the reference counting before any call to SSL_CTX_free */
3689 ret->references = 1;
3690 ret->lock = CRYPTO_THREAD_lock_new();
3691 if (ret->lock == NULL) {
3692 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3696 #ifdef TSAN_REQUIRES_LOCKING
3697 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3698 if (ret->tsan_lock == NULL) {
3699 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3704 ret->libctx = libctx;
3705 if (propq != NULL) {
3706 ret->propq = OPENSSL_strdup(propq);
3707 if (ret->propq == NULL)
3712 ret->min_proto_version = 0;
3713 ret->max_proto_version = 0;
3714 ret->mode = SSL_MODE_AUTO_RETRY;
3715 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3716 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3717 /* We take the system default. */
3718 ret->session_timeout = meth->get_timeout();
3719 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3720 ret->verify_mode = SSL_VERIFY_NONE;
3721 if ((ret->cert = ssl_cert_new()) == NULL) {
3722 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3726 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3727 if (ret->sessions == NULL) {
3728 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3731 ret->cert_store = X509_STORE_new();
3732 if (ret->cert_store == NULL) {
3733 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3736 #ifndef OPENSSL_NO_CT
3737 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3738 if (ret->ctlog_store == NULL) {
3739 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3744 /* initialize cipher/digest methods table */
3745 if (!ssl_load_ciphers(ret))
3747 /* initialise sig algs */
3748 if (!ssl_setup_sig_algs(ret))
3751 if (!ssl_load_groups(ret))
3754 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3755 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3759 if (!ssl_create_cipher_list(ret,
3760 ret->tls13_ciphersuites,
3761 &ret->cipher_list, &ret->cipher_list_by_id,
3762 OSSL_default_cipher_list(), ret->cert)
3763 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3764 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3768 ret->param = X509_VERIFY_PARAM_new();
3769 if (ret->param == NULL) {
3770 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3775 * If these aren't available from the provider we'll get NULL returns.
3776 * That's fine but will cause errors later if SSLv3 is negotiated
3778 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3779 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3781 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3782 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3786 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3787 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3791 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3792 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3796 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3799 /* No compression for DTLS */
3800 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3801 ret->comp_methods = SSL_COMP_get_compression_methods();
3803 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3804 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3806 /* Setup RFC5077 ticket keys */
3807 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3808 sizeof(ret->ext.tick_key_name), 0) <= 0)
3809 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3810 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3811 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3812 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3813 ret->options |= SSL_OP_NO_TICKET;
3815 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3816 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3817 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3821 #ifndef OPENSSL_NO_SRP
3822 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3823 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3827 #ifndef OPENSSL_NO_ENGINE
3828 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3829 # define eng_strx(x) #x
3830 # define eng_str(x) eng_strx(x)
3831 /* Use specific client engine automatically... ignore errors */
3834 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3837 ENGINE_load_builtin_engines();
3838 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3840 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3846 #ifndef OPENSSL_NO_COMP_ALG
3848 * Set the default order: brotli, zlib, zstd
3849 * Including only those enabled algorithms
3851 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3853 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3854 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3855 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3856 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3857 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3858 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3861 * Disable compression by default to prevent CRIME. Applications can
3862 * re-enable compression by configuring
3863 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3864 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3865 * middlebox compatibility by default. This may be disabled by default in
3866 * a later OpenSSL version.
3868 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3870 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3873 * We cannot usefully set a default max_early_data here (which gets
3874 * propagated in SSL_new(), for the following reason: setting the
3875 * SSL field causes tls_construct_stoc_early_data() to tell the
3876 * client that early data will be accepted when constructing a TLS 1.3
3877 * session ticket, and the client will accordingly send us early data
3878 * when using that ticket (if the client has early data to send).
3879 * However, in order for the early data to actually be consumed by
3880 * the application, the application must also have calls to
3881 * SSL_read_early_data(); otherwise we'll just skip past the early data
3882 * and ignore it. So, since the application must add calls to
3883 * SSL_read_early_data(), we also require them to add
3884 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3885 * eliminating the bandwidth-wasting early data in the case described
3888 ret->max_early_data = 0;
3891 * Default recv_max_early_data is a fully loaded single record. Could be
3892 * split across multiple records in practice. We set this differently to
3893 * max_early_data so that, in the default case, we do not advertise any
3894 * support for early_data, but if a client were to send us some (e.g.
3895 * because of an old, stale ticket) then we will tolerate it and skip over
3898 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3900 /* By default we send two session tickets automatically in TLSv1.3 */
3901 ret->num_tickets = 2;
3903 ssl_ctx_system_config(ret);
3911 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3913 return SSL_CTX_new_ex(NULL, NULL, meth);
3916 int SSL_CTX_up_ref(SSL_CTX *ctx)
3920 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3923 REF_PRINT_COUNT("SSL_CTX", ctx);
3924 REF_ASSERT_ISNT(i < 2);
3925 return ((i > 1) ? 1 : 0);
3928 void SSL_CTX_free(SSL_CTX *a)
3936 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3937 REF_PRINT_COUNT("SSL_CTX", a);
3940 REF_ASSERT_ISNT(i < 0);
3942 X509_VERIFY_PARAM_free(a->param);
3943 dane_ctx_final(&a->dane);
3946 * Free internal session cache. However: the remove_cb() may reference
3947 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3948 * after the sessions were flushed.
3949 * As the ex_data handling routines might also touch the session cache,
3950 * the most secure solution seems to be: empty (flush) the cache, then
3951 * free ex_data, then finally free the cache.
3952 * (See ticket [openssl.org #212].)
3954 if (a->sessions != NULL)
3955 SSL_CTX_flush_sessions(a, 0);
3957 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3958 lh_SSL_SESSION_free(a->sessions);
3959 X509_STORE_free(a->cert_store);
3960 #ifndef OPENSSL_NO_CT
3961 CTLOG_STORE_free(a->ctlog_store);
3963 sk_SSL_CIPHER_free(a->cipher_list);
3964 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3965 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3966 ssl_cert_free(a->cert);
3967 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3968 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3969 OSSL_STACK_OF_X509_free(a->extra_certs);
3970 a->comp_methods = NULL;
3971 #ifndef OPENSSL_NO_SRTP
3972 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3974 #ifndef OPENSSL_NO_SRP
3975 ssl_ctx_srp_ctx_free_intern(a);
3977 #ifndef OPENSSL_NO_ENGINE
3978 tls_engine_finish(a->client_cert_engine);
3981 OPENSSL_free(a->ext.ecpointformats);
3982 OPENSSL_free(a->ext.supportedgroups);
3983 OPENSSL_free(a->ext.supported_groups_default);
3984 OPENSSL_free(a->ext.alpn);
3985 OPENSSL_secure_free(a->ext.secure);
3987 ssl_evp_md_free(a->md5);
3988 ssl_evp_md_free(a->sha1);
3990 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3991 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3992 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3993 ssl_evp_md_free(a->ssl_digest_methods[j]);
3994 for (j = 0; j < a->group_list_len; j++) {
3995 OPENSSL_free(a->group_list[j].tlsname);
3996 OPENSSL_free(a->group_list[j].realname);
3997 OPENSSL_free(a->group_list[j].algorithm);
3999 OPENSSL_free(a->group_list);
4001 OPENSSL_free(a->sigalg_lookup_cache);
4003 CRYPTO_THREAD_lock_free(a->lock);
4004 #ifdef TSAN_REQUIRES_LOCKING
4005 CRYPTO_THREAD_lock_free(a->tsan_lock);
4008 OPENSSL_free(a->propq);
4013 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4015 ctx->default_passwd_callback = cb;
4018 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4020 ctx->default_passwd_callback_userdata = u;
4023 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4025 return ctx->default_passwd_callback;
4028 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4030 return ctx->default_passwd_callback_userdata;
4033 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4040 sc->default_passwd_callback = cb;
4043 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4045 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4050 sc->default_passwd_callback_userdata = u;
4053 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4055 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4060 return sc->default_passwd_callback;
4063 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4065 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4070 return sc->default_passwd_callback_userdata;
4073 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4074 int (*cb) (X509_STORE_CTX *, void *),
4077 ctx->app_verify_callback = cb;
4078 ctx->app_verify_arg = arg;
4081 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4082 int (*cb) (int, X509_STORE_CTX *))
4084 ctx->verify_mode = mode;
4085 ctx->default_verify_callback = cb;
4088 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4090 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4093 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4095 ssl_cert_set_cert_cb(c->cert, cb, arg);
4098 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4100 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4105 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4108 void ssl_set_masks(SSL_CONNECTION *s)
4111 uint32_t *pvalid = s->s3.tmp.valid_flags;
4112 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4113 unsigned long mask_k, mask_a;
4114 int have_ecc_cert, ecdsa_ok;
4119 dh_tmp = (c->dh_tmp != NULL
4120 || c->dh_tmp_cb != NULL
4123 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4124 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4125 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4126 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4130 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4131 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4133 #ifndef OPENSSL_NO_GOST
4134 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4135 mask_k |= SSL_kGOST | SSL_kGOST18;
4136 mask_a |= SSL_aGOST12;
4138 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4139 mask_k |= SSL_kGOST | SSL_kGOST18;
4140 mask_a |= SSL_aGOST12;
4142 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4143 mask_k |= SSL_kGOST;
4144 mask_a |= SSL_aGOST01;
4155 * If we only have an RSA-PSS certificate allow RSA authentication
4156 * if TLS 1.2 and peer supports it.
4159 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4160 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4161 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4168 mask_a |= SSL_aNULL;
4171 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4172 * depending on the key usage extension.
4174 if (have_ecc_cert) {
4176 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4177 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4178 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4181 mask_a |= SSL_aECDSA;
4183 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4184 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4185 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4186 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4187 mask_a |= SSL_aECDSA;
4189 /* Allow Ed448 for TLS 1.2 if peer supports it */
4190 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4191 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4192 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4193 mask_a |= SSL_aECDSA;
4195 mask_k |= SSL_kECDHE;
4197 #ifndef OPENSSL_NO_PSK
4200 if (mask_k & SSL_kRSA)
4201 mask_k |= SSL_kRSAPSK;
4202 if (mask_k & SSL_kDHE)
4203 mask_k |= SSL_kDHEPSK;
4204 if (mask_k & SSL_kECDHE)
4205 mask_k |= SSL_kECDHEPSK;
4208 s->s3.tmp.mask_k = mask_k;
4209 s->s3.tmp.mask_a = mask_a;
4212 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4214 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4215 /* key usage, if present, must allow signing */
4216 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4217 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4221 return 1; /* all checks are ok */
4224 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4225 const unsigned char **serverinfo,
4226 size_t *serverinfo_length)
4228 CERT_PKEY *cpk = s->s3.tmp.cert;
4229 *serverinfo_length = 0;
4231 if (cpk == NULL || cpk->serverinfo == NULL)
4234 *serverinfo = cpk->serverinfo;
4235 *serverinfo_length = cpk->serverinfo_length;
4239 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4244 * If the session_id_length is 0, we are not supposed to cache it, and it
4245 * would be rather hard to do anyway :-)
4247 if (s->session->session_id_length == 0)
4251 * If sid_ctx_length is 0 there is no specific application context
4252 * associated with this session, so when we try to resume it and
4253 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4254 * indication that this is actually a session for the proper application
4255 * context, and the *handshake* will fail, not just the resumption attempt.
4256 * Do not cache (on the server) these sessions that are not resumable
4257 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4259 if (s->server && s->session->sid_ctx_length == 0
4260 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4263 i = s->session_ctx->session_cache_mode;
4265 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4267 * Add the session to the internal cache. In server side TLSv1.3 we
4268 * normally don't do this because by default it's a full stateless ticket
4269 * with only a dummy session id so there is no reason to cache it,
4271 * - we are doing early_data, in which case we cache so that we can
4273 * - the application has set a remove_session_cb so needs to know about
4274 * session timeout events
4275 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4277 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4278 && (!SSL_CONNECTION_IS_TLS13(s)
4280 || (s->max_early_data > 0
4281 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4282 || s->session_ctx->remove_session_cb != NULL
4283 || (s->options & SSL_OP_NO_TICKET) != 0))
4284 SSL_CTX_add_session(s->session_ctx, s->session);
4287 * Add the session to the external cache. We do this even in server side
4288 * TLSv1.3 without early data because some applications just want to
4289 * know about the creation of a session and aren't doing a full cache.
4291 if (s->session_ctx->new_session_cb != NULL) {
4292 SSL_SESSION_up_ref(s->session);
4293 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4295 SSL_SESSION_free(s->session);
4299 /* auto flush every 255 connections */
4300 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4301 TSAN_QUALIFIER int *stat;
4303 if (mode & SSL_SESS_CACHE_CLIENT)
4304 stat = &s->session_ctx->stats.sess_connect_good;
4306 stat = &s->session_ctx->stats.sess_accept_good;
4307 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4308 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4312 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4317 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4322 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4325 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4327 /* TODO(QUIC): Do we want this for QUIC? */
4329 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4332 if (s->method != meth) {
4333 const SSL_METHOD *sm = s->method;
4334 int (*hf) (SSL *) = sc->handshake_func;
4336 if (sm->version == meth->version)
4341 ret = s->method->ssl_init(s);
4344 if (hf == sm->ssl_connect)
4345 sc->handshake_func = meth->ssl_connect;
4346 else if (hf == sm->ssl_accept)
4347 sc->handshake_func = meth->ssl_accept;
4352 int SSL_get_error(const SSL *s, int i)
4357 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4360 return SSL_ERROR_NONE;
4362 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4364 return SSL_ERROR_SSL;
4367 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4368 * where we do encode the error
4370 if ((l = ERR_peek_error()) != 0) {
4371 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4372 return SSL_ERROR_SYSCALL;
4374 return SSL_ERROR_SSL;
4377 if (SSL_want_read(s)) {
4378 bio = SSL_get_rbio(s);
4379 if (BIO_should_read(bio))
4380 return SSL_ERROR_WANT_READ;
4381 else if (BIO_should_write(bio))
4383 * This one doesn't make too much sense ... We never try to write
4384 * to the rbio, and an application program where rbio and wbio
4385 * are separate couldn't even know what it should wait for.
4386 * However if we ever set s->rwstate incorrectly (so that we have
4387 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4388 * wbio *are* the same, this test works around that bug; so it
4389 * might be safer to keep it.
4391 return SSL_ERROR_WANT_WRITE;
4392 else if (BIO_should_io_special(bio)) {
4393 reason = BIO_get_retry_reason(bio);
4394 if (reason == BIO_RR_CONNECT)
4395 return SSL_ERROR_WANT_CONNECT;
4396 else if (reason == BIO_RR_ACCEPT)
4397 return SSL_ERROR_WANT_ACCEPT;
4399 return SSL_ERROR_SYSCALL; /* unknown */
4403 if (SSL_want_write(s)) {
4404 /* Access wbio directly - in order to use the buffered bio if present */
4406 if (BIO_should_write(bio))
4407 return SSL_ERROR_WANT_WRITE;
4408 else if (BIO_should_read(bio))
4410 * See above (SSL_want_read(s) with BIO_should_write(bio))
4412 return SSL_ERROR_WANT_READ;
4413 else if (BIO_should_io_special(bio)) {
4414 reason = BIO_get_retry_reason(bio);
4415 if (reason == BIO_RR_CONNECT)
4416 return SSL_ERROR_WANT_CONNECT;
4417 else if (reason == BIO_RR_ACCEPT)
4418 return SSL_ERROR_WANT_ACCEPT;
4420 return SSL_ERROR_SYSCALL;
4423 if (SSL_want_x509_lookup(s))
4424 return SSL_ERROR_WANT_X509_LOOKUP;
4425 if (SSL_want_retry_verify(s))
4426 return SSL_ERROR_WANT_RETRY_VERIFY;
4427 if (SSL_want_async(s))
4428 return SSL_ERROR_WANT_ASYNC;
4429 if (SSL_want_async_job(s))
4430 return SSL_ERROR_WANT_ASYNC_JOB;
4431 if (SSL_want_client_hello_cb(s))
4432 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4434 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4435 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4436 return SSL_ERROR_ZERO_RETURN;
4438 return SSL_ERROR_SYSCALL;
4441 static int ssl_do_handshake_intern(void *vargs)
4443 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4445 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4450 return sc->handshake_func(s);
4453 int SSL_do_handshake(SSL *s)
4456 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4458 /* TODO(QUIC): Special handling for QUIC will be needed */
4462 if (sc->handshake_func == NULL) {
4463 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4467 ossl_statem_check_finish_init(sc, -1);
4469 s->method->ssl_renegotiate_check(s, 0);
4471 if (SSL_in_init(s) || SSL_in_before(s)) {
4472 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4473 struct ssl_async_args args;
4475 memset(&args, 0, sizeof(args));
4478 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4480 ret = sc->handshake_func(s);
4486 void SSL_set_accept_state(SSL *s)
4488 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4490 /* TODO(QUIC): Special handling for QUIC will be needed */
4496 ossl_statem_clear(sc);
4497 sc->handshake_func = s->method->ssl_accept;
4501 void SSL_set_connect_state(SSL *s)
4503 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4505 /* TODO(QUIC): Special handling for QUIC will be needed */
4511 ossl_statem_clear(sc);
4512 sc->handshake_func = s->method->ssl_connect;
4516 int ssl_undefined_function(SSL *s)
4518 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4522 int ssl_undefined_void_function(void)
4524 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4528 int ssl_undefined_const_function(const SSL *s)
4533 const SSL_METHOD *ssl_bad_method(int ver)
4535 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4539 const char *ssl_protocol_to_string(int version)
4543 case TLS1_3_VERSION:
4546 case TLS1_2_VERSION:
4549 case TLS1_1_VERSION:
4564 case DTLS1_2_VERSION:
4572 const char *SSL_get_version(const SSL *s)
4574 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4576 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4580 return ssl_protocol_to_string(sc->version);
4583 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4585 STACK_OF(X509_NAME) *sk;
4594 if ((sk = sk_X509_NAME_new_null()) == NULL)
4596 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4597 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4599 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4602 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4604 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4613 SSL *SSL_dup(SSL *s)
4617 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4618 SSL_CONNECTION *retsc;
4619 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4624 /* If we're not quiescent, just up_ref! */
4625 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4626 CRYPTO_UP_REF(&s->references, &i, s->lock);
4631 * Otherwise, copy configuration state, and session if set.
4633 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4635 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4638 if (sc->session != NULL) {
4640 * Arranges to share the same session via up_ref. This "copies"
4641 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4643 if (!SSL_copy_session_id(ret, s))
4647 * No session has been established yet, so we have to expect that
4648 * s->cert or ret->cert will be changed later -- they should not both
4649 * point to the same object, and thus we can't use
4650 * SSL_copy_session_id.
4652 if (!SSL_set_ssl_method(ret, s->method))
4655 if (sc->cert != NULL) {
4656 ssl_cert_free(retsc->cert);
4657 retsc->cert = ssl_cert_dup(sc->cert);
4658 if (retsc->cert == NULL)
4662 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4663 (int)sc->sid_ctx_length))
4667 if (!ssl_dane_dup(retsc, sc))
4669 retsc->version = sc->version;
4670 retsc->options = sc->options;
4671 retsc->min_proto_version = sc->min_proto_version;
4672 retsc->max_proto_version = sc->max_proto_version;
4673 retsc->mode = sc->mode;
4674 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4675 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4676 retsc->msg_callback = sc->msg_callback;
4677 retsc->msg_callback_arg = sc->msg_callback_arg;
4678 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4679 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4680 retsc->generate_session_id = sc->generate_session_id;
4682 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4684 /* copy app data, a little dangerous perhaps */
4685 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4688 retsc->server = sc->server;
4689 if (sc->handshake_func) {
4691 SSL_set_accept_state(ret);
4693 SSL_set_connect_state(ret);
4695 retsc->shutdown = sc->shutdown;
4696 retsc->hit = sc->hit;
4698 retsc->default_passwd_callback = sc->default_passwd_callback;
4699 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4701 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4703 /* dup the cipher_list and cipher_list_by_id stacks */
4704 if (sc->cipher_list != NULL) {
4705 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4708 if (sc->cipher_list_by_id != NULL)
4709 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4713 /* Dup the client_CA list */
4714 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4715 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4725 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4727 if (s->enc_read_ctx != NULL) {
4728 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4729 s->enc_read_ctx = NULL;
4731 if (s->enc_write_ctx != NULL) {
4732 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4733 s->enc_write_ctx = NULL;
4735 #ifndef OPENSSL_NO_COMP
4736 COMP_CTX_free(s->expand);
4738 COMP_CTX_free(s->compress);
4743 X509 *SSL_get_certificate(const SSL *s)
4745 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4750 if (sc->cert != NULL)
4751 return sc->cert->key->x509;
4756 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4758 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4763 if (sc->cert != NULL)
4764 return sc->cert->key->privatekey;
4769 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4771 if (ctx->cert != NULL)
4772 return ctx->cert->key->x509;
4777 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4779 if (ctx->cert != NULL)
4780 return ctx->cert->key->privatekey;
4785 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4787 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4792 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4793 return sc->session->cipher;
4797 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4799 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4804 return sc->s3.tmp.new_cipher;
4807 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4809 #ifndef OPENSSL_NO_COMP
4810 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4815 /* TODO(RECLAYER): Remove me once SSLv3/DTLS moved to write record layer */
4816 if (SSL_CONNECTION_IS_DTLS(sc) || sc->version == SSL3_VERSION)
4817 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4819 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4825 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4827 #ifndef OPENSSL_NO_COMP
4828 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4833 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4839 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4843 if (s->bbio != NULL) {
4844 /* Already buffered. */
4848 bbio = BIO_new(BIO_f_buffer());
4849 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4851 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4855 s->wbio = BIO_push(bbio, s->wbio);
4857 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4862 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4864 /* callers ensure s is never null */
4865 if (s->bbio == NULL)
4868 s->wbio = BIO_pop(s->wbio);
4869 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4877 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4879 ctx->quiet_shutdown = mode;
4882 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4884 return ctx->quiet_shutdown;
4887 void SSL_set_quiet_shutdown(SSL *s, int mode)
4889 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4891 /* TODO(QUIC): Do we want this for QUIC? */
4895 sc->quiet_shutdown = mode;
4898 int SSL_get_quiet_shutdown(const SSL *s)
4900 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4902 /* TODO(QUIC): Do we want this for QUIC? */
4906 return sc->quiet_shutdown;
4909 void SSL_set_shutdown(SSL *s, int mode)
4911 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4913 /* TODO(QUIC): Do we want this for QUIC? */
4917 sc->shutdown = mode;
4920 int SSL_get_shutdown(const SSL *s)
4922 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4924 /* TODO(QUIC): Do we want this for QUIC? */
4928 return sc->shutdown;
4931 int SSL_version(const SSL *s)
4933 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4935 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4942 int SSL_client_version(const SSL *s)
4944 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4946 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4950 return sc->client_version;
4953 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4958 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4961 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4963 /* TODO(QUIC): Do we need this for QUIC support? */
4967 if (ssl->ctx == ctx)
4970 ctx = sc->session_ctx;
4971 new_cert = ssl_cert_dup(ctx->cert);
4972 if (new_cert == NULL) {
4976 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4977 ssl_cert_free(new_cert);
4981 ssl_cert_free(sc->cert);
4982 sc->cert = new_cert;
4985 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4986 * so setter APIs must prevent invalid lengths from entering the system.
4988 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4992 * If the session ID context matches that of the parent SSL_CTX,
4993 * inherit it from the new SSL_CTX as well. If however the context does
4994 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4995 * leave it unchanged.
4997 if ((ssl->ctx != NULL) &&
4998 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4999 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5000 sc->sid_ctx_length = ctx->sid_ctx_length;
5001 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5004 SSL_CTX_up_ref(ctx);
5005 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5011 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5013 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5017 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5019 X509_LOOKUP *lookup;
5021 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5025 /* We ignore errors, in case the directory doesn't exist */
5028 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5035 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5037 X509_LOOKUP *lookup;
5039 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5043 /* We ignore errors, in case the file doesn't exist */
5046 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5054 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5056 X509_LOOKUP *lookup;
5058 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5062 /* We ignore errors, in case the directory doesn't exist */
5065 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5072 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5074 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5078 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5080 return X509_STORE_load_path(ctx->cert_store, CApath);
5083 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5085 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5089 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5092 if (CAfile == NULL && CApath == NULL)
5094 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5096 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5101 void SSL_set_info_callback(SSL *ssl,
5102 void (*cb) (const SSL *ssl, int type, int val))
5104 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5109 sc->info_callback = cb;
5113 * One compiler (Diab DCC) doesn't like argument names in returned function
5116 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5119 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5124 return sc->info_callback;
5127 void SSL_set_verify_result(SSL *ssl, long arg)
5129 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5134 sc->verify_result = arg;
5137 long SSL_get_verify_result(const SSL *ssl)
5139 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5144 return sc->verify_result;
5147 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5149 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5155 return sizeof(sc->s3.client_random);
5156 if (outlen > sizeof(sc->s3.client_random))
5157 outlen = sizeof(sc->s3.client_random);
5158 memcpy(out, sc->s3.client_random, outlen);
5162 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5164 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5170 return sizeof(sc->s3.server_random);
5171 if (outlen > sizeof(sc->s3.server_random))
5172 outlen = sizeof(sc->s3.server_random);
5173 memcpy(out, sc->s3.server_random, outlen);
5177 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5178 unsigned char *out, size_t outlen)
5181 return session->master_key_length;
5182 if (outlen > session->master_key_length)
5183 outlen = session->master_key_length;
5184 memcpy(out, session->master_key, outlen);
5188 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5191 if (len > sizeof(sess->master_key))
5194 memcpy(sess->master_key, in, len);
5195 sess->master_key_length = len;
5200 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5202 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5205 void *SSL_get_ex_data(const SSL *s, int idx)
5207 return CRYPTO_get_ex_data(&s->ex_data, idx);
5210 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5212 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5215 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5217 return CRYPTO_get_ex_data(&s->ex_data, idx);
5220 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5222 return ctx->cert_store;
5225 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5227 X509_STORE_free(ctx->cert_store);
5228 ctx->cert_store = store;
5231 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5234 X509_STORE_up_ref(store);
5235 SSL_CTX_set_cert_store(ctx, store);
5238 int SSL_want(const SSL *s)
5240 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5248 #ifndef OPENSSL_NO_PSK
5249 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5251 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5252 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5255 OPENSSL_free(ctx->cert->psk_identity_hint);
5256 if (identity_hint != NULL) {
5257 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5258 if (ctx->cert->psk_identity_hint == NULL)
5261 ctx->cert->psk_identity_hint = NULL;
5265 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5267 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5272 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5273 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5276 OPENSSL_free(sc->cert->psk_identity_hint);
5277 if (identity_hint != NULL) {
5278 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5279 if (sc->cert->psk_identity_hint == NULL)
5282 sc->cert->psk_identity_hint = NULL;
5286 const char *SSL_get_psk_identity_hint(const SSL *s)
5288 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5290 if (sc == NULL || sc->session == NULL)
5293 return sc->session->psk_identity_hint;
5296 const char *SSL_get_psk_identity(const SSL *s)
5298 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5300 if (sc == NULL || sc->session == NULL)
5303 return sc->session->psk_identity;
5306 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5308 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5313 sc->psk_client_callback = cb;
5316 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5318 ctx->psk_client_callback = cb;
5321 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5323 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5328 sc->psk_server_callback = cb;
5331 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5333 ctx->psk_server_callback = cb;
5337 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5339 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5344 sc->psk_find_session_cb = cb;
5347 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5348 SSL_psk_find_session_cb_func cb)
5350 ctx->psk_find_session_cb = cb;
5353 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5355 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5360 sc->psk_use_session_cb = cb;
5363 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5364 SSL_psk_use_session_cb_func cb)
5366 ctx->psk_use_session_cb = cb;
5369 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5370 void (*cb) (int write_p, int version,
5371 int content_type, const void *buf,
5372 size_t len, SSL *ssl, void *arg))
5374 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5377 void SSL_set_msg_callback(SSL *ssl,
5378 void (*cb) (int write_p, int version,
5379 int content_type, const void *buf,
5380 size_t len, SSL *ssl, void *arg))
5382 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5385 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5386 int (*cb) (SSL *ssl,
5390 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5391 (void (*)(void))cb);
5394 void SSL_set_not_resumable_session_callback(SSL *ssl,
5395 int (*cb) (SSL *ssl,
5396 int is_forward_secure))
5398 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5399 (void (*)(void))cb);
5402 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5403 size_t (*cb) (SSL *ssl, int type,
5404 size_t len, void *arg))
5406 ctx->record_padding_cb = cb;
5409 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5411 ctx->record_padding_arg = arg;
5414 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5416 return ctx->record_padding_arg;
5419 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5421 /* block size of 0 or 1 is basically no padding */
5422 if (block_size == 1)
5423 ctx->block_padding = 0;
5424 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5425 ctx->block_padding = block_size;
5431 int SSL_set_record_padding_callback(SSL *ssl,
5432 size_t (*cb) (SSL *ssl, int type,
5433 size_t len, void *arg))
5436 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5441 b = SSL_get_wbio(ssl);
5442 if (b == NULL || !BIO_get_ktls_send(b)) {
5443 sc->rlayer.record_padding_cb = cb;
5449 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5451 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5456 sc->rlayer.record_padding_arg = arg;
5459 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5461 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5466 return sc->rlayer.record_padding_arg;
5469 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5471 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5476 /* block size of 0 or 1 is basically no padding */
5477 if (block_size == 1)
5478 sc->rlayer.block_padding = 0;
5479 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5480 sc->rlayer.block_padding = block_size;
5486 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5488 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5493 sc->num_tickets = num_tickets;
5498 size_t SSL_get_num_tickets(const SSL *s)
5500 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5505 return sc->num_tickets;
5508 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5510 ctx->num_tickets = num_tickets;
5515 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5517 return ctx->num_tickets;
5521 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5522 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5523 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5524 * Returns the newly allocated ctx;
5527 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5529 ssl_clear_hash_ctx(hash);
5530 *hash = EVP_MD_CTX_new();
5531 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5532 EVP_MD_CTX_free(*hash);
5539 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5542 EVP_MD_CTX_free(*hash);
5546 /* Retrieve handshake hashes */
5547 int ssl_handshake_hash(SSL_CONNECTION *s,
5548 unsigned char *out, size_t outlen,
5551 EVP_MD_CTX *ctx = NULL;
5552 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5553 int hashleni = EVP_MD_CTX_get_size(hdgst);
5556 if (hashleni < 0 || (size_t)hashleni > outlen) {
5557 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5561 ctx = EVP_MD_CTX_new();
5563 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5567 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5568 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5569 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5573 *hashlen = hashleni;
5577 EVP_MD_CTX_free(ctx);
5581 int SSL_session_reused(const SSL *s)
5583 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5591 int SSL_is_server(const SSL *s)
5593 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5601 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5602 void SSL_set_debug(SSL *s, int debug)
5604 /* Old function was do-nothing anyway... */
5610 void SSL_set_security_level(SSL *s, int level)
5612 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5617 sc->cert->sec_level = level;
5620 int SSL_get_security_level(const SSL *s)
5622 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5627 return sc->cert->sec_level;
5630 void SSL_set_security_callback(SSL *s,
5631 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5632 int op, int bits, int nid,
5633 void *other, void *ex))
5635 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5640 sc->cert->sec_cb = cb;
5643 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5644 const SSL_CTX *ctx, int op,
5645 int bits, int nid, void *other,
5647 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5652 return sc->cert->sec_cb;
5655 void SSL_set0_security_ex_data(SSL *s, void *ex)
5657 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5662 sc->cert->sec_ex = ex;
5665 void *SSL_get0_security_ex_data(const SSL *s)
5667 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5672 return sc->cert->sec_ex;
5675 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5677 ctx->cert->sec_level = level;
5680 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5682 return ctx->cert->sec_level;
5685 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5686 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5687 int op, int bits, int nid,
5688 void *other, void *ex))
5690 ctx->cert->sec_cb = cb;
5693 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5699 return ctx->cert->sec_cb;
5702 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5704 ctx->cert->sec_ex = ex;
5707 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5709 return ctx->cert->sec_ex;
5712 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5714 return ctx->options;
5717 uint64_t SSL_get_options(const SSL *s)
5719 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5727 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5729 return ctx->options |= op;
5732 uint64_t SSL_set_options(SSL *s, uint64_t op)
5734 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5735 OSSL_PARAM options[2], *opts = options;
5742 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5744 *opts = OSSL_PARAM_construct_end();
5746 /* Ignore return value */
5747 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5752 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5754 return ctx->options &= ~op;
5757 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5759 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5764 return sc->options &= ~op;
5767 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5769 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5774 return sc->verified_chain;
5777 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5779 #ifndef OPENSSL_NO_CT
5782 * Moves SCTs from the |src| stack to the |dst| stack.
5783 * The source of each SCT will be set to |origin|.
5784 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5786 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5788 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5789 sct_source_t origin)
5795 *dst = sk_SCT_new_null();
5797 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5802 while (sk_SCT_num(src) > 0) {
5803 sct = sk_SCT_pop(src);
5804 if (SCT_set_source(sct, origin) != 1)
5807 if (sk_SCT_push(*dst, sct) <= 0)
5815 sk_SCT_push(src, sct); /* Put the SCT back */
5820 * Look for data collected during ServerHello and parse if found.
5821 * Returns the number of SCTs extracted.
5823 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5825 int scts_extracted = 0;
5827 if (s->ext.scts != NULL) {
5828 const unsigned char *p = s->ext.scts;
5829 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5831 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5833 SCT_LIST_free(scts);
5836 return scts_extracted;
5840 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5841 * contains an SCT X509 extension. They will be stored in |s->scts|.
5843 * - The number of SCTs extracted, assuming an OCSP response exists.
5844 * - 0 if no OCSP response exists or it contains no SCTs.
5845 * - A negative integer if an error occurs.
5847 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5849 # ifndef OPENSSL_NO_OCSP
5850 int scts_extracted = 0;
5851 const unsigned char *p;
5852 OCSP_BASICRESP *br = NULL;
5853 OCSP_RESPONSE *rsp = NULL;
5854 STACK_OF(SCT) *scts = NULL;
5857 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5860 p = s->ext.ocsp.resp;
5861 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5865 br = OCSP_response_get1_basic(rsp);
5869 for (i = 0; i < OCSP_resp_count(br); ++i) {
5870 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5876 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5878 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5879 if (scts_extracted < 0)
5883 SCT_LIST_free(scts);
5884 OCSP_BASICRESP_free(br);
5885 OCSP_RESPONSE_free(rsp);
5886 return scts_extracted;
5888 /* Behave as if no OCSP response exists */
5894 * Attempts to extract SCTs from the peer certificate.
5895 * Return the number of SCTs extracted, or a negative integer if an error
5898 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5900 int scts_extracted = 0;
5901 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5904 STACK_OF(SCT) *scts =
5905 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5908 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5910 SCT_LIST_free(scts);
5913 return scts_extracted;
5917 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5918 * response (if it exists) and X509v3 extensions in the certificate.
5919 * Returns NULL if an error occurs.
5921 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5923 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5928 if (!sc->scts_parsed) {
5929 if (ct_extract_tls_extension_scts(sc) < 0 ||
5930 ct_extract_ocsp_response_scts(sc) < 0 ||
5931 ct_extract_x509v3_extension_scts(sc) < 0)
5934 sc->scts_parsed = 1;
5941 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5942 const STACK_OF(SCT) *scts, void *unused_arg)
5947 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5948 const STACK_OF(SCT) *scts, void *unused_arg)
5950 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5953 for (i = 0; i < count; ++i) {
5954 SCT *sct = sk_SCT_value(scts, i);
5955 int status = SCT_get_validation_status(sct);
5957 if (status == SCT_VALIDATION_STATUS_VALID)
5960 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5964 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5967 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5973 * Since code exists that uses the custom extension handler for CT, look
5974 * for this and throw an error if they have already registered to use CT.
5976 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5977 TLSEXT_TYPE_signed_certificate_timestamp))
5979 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5983 if (callback != NULL) {
5985 * If we are validating CT, then we MUST accept SCTs served via OCSP
5987 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5991 sc->ct_validation_callback = callback;
5992 sc->ct_validation_callback_arg = arg;
5997 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5998 ssl_ct_validation_cb callback, void *arg)
6001 * Since code exists that uses the custom extension handler for CT, look for
6002 * this and throw an error if they have already registered to use CT.
6004 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6005 TLSEXT_TYPE_signed_certificate_timestamp))
6007 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6011 ctx->ct_validation_callback = callback;
6012 ctx->ct_validation_callback_arg = arg;
6016 int SSL_ct_is_enabled(const SSL *s)
6018 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6023 return sc->ct_validation_callback != NULL;
6026 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6028 return ctx->ct_validation_callback != NULL;
6031 int ssl_validate_ct(SSL_CONNECTION *s)
6034 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6036 SSL_DANE *dane = &s->dane;
6037 CT_POLICY_EVAL_CTX *ctx = NULL;
6038 const STACK_OF(SCT) *scts;
6041 * If no callback is set, the peer is anonymous, or its chain is invalid,
6042 * skip SCT validation - just return success. Applications that continue
6043 * handshakes without certificates, with unverified chains, or pinned leaf
6044 * certificates are outside the scope of the WebPKI and CT.
6046 * The above exclusions notwithstanding the vast majority of peers will
6047 * have rather ordinary certificate chains validated by typical
6048 * applications that perform certificate verification and therefore will
6049 * process SCTs when enabled.
6051 if (s->ct_validation_callback == NULL || cert == NULL ||
6052 s->verify_result != X509_V_OK ||
6053 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6057 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6058 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6060 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6061 switch (dane->mtlsa->usage) {
6062 case DANETLS_USAGE_DANE_TA:
6063 case DANETLS_USAGE_DANE_EE:
6068 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6069 SSL_CONNECTION_GET_CTX(s)->propq);
6071 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6075 issuer = sk_X509_value(s->verified_chain, 1);
6076 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6077 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6078 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6079 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6080 CT_POLICY_EVAL_CTX_set_time(
6081 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6083 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6086 * This function returns success (> 0) only when all the SCTs are valid, 0
6087 * when some are invalid, and < 0 on various internal errors (out of
6088 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6089 * reason to abort the handshake, that decision is up to the callback.
6090 * Therefore, we error out only in the unexpected case that the return
6091 * value is negative.
6093 * XXX: One might well argue that the return value of this function is an
6094 * unfortunate design choice. Its job is only to determine the validation
6095 * status of each of the provided SCTs. So long as it correctly separates
6096 * the wheat from the chaff it should return success. Failure in this case
6097 * ought to correspond to an inability to carry out its duties.
6099 if (SCT_LIST_validate(scts, ctx) < 0) {
6100 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6104 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6106 ret = 0; /* This function returns 0 on failure */
6108 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6111 CT_POLICY_EVAL_CTX_free(ctx);
6113 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6114 * failure return code here. Also the application may wish the complete
6115 * the handshake, and then disconnect cleanly at a higher layer, after
6116 * checking the verification status of the completed connection.
6118 * We therefore force a certificate verification failure which will be
6119 * visible via SSL_get_verify_result() and cached as part of any resumed
6122 * Note: the permissive callback is for information gathering only, always
6123 * returns success, and does not affect verification status. Only the
6124 * strict callback or a custom application-specified callback can trigger
6125 * connection failure or record a verification error.
6128 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6132 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6134 switch (validation_mode) {
6136 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6138 case SSL_CT_VALIDATION_PERMISSIVE:
6139 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6140 case SSL_CT_VALIDATION_STRICT:
6141 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6145 int SSL_enable_ct(SSL *s, int validation_mode)
6147 switch (validation_mode) {
6149 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6151 case SSL_CT_VALIDATION_PERMISSIVE:
6152 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6153 case SSL_CT_VALIDATION_STRICT:
6154 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6158 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6160 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6163 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6165 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6168 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6170 CTLOG_STORE_free(ctx->ctlog_store);
6171 ctx->ctlog_store = logs;
6174 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6176 return ctx->ctlog_store;
6179 #endif /* OPENSSL_NO_CT */
6181 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6184 c->client_hello_cb = cb;
6185 c->client_hello_cb_arg = arg;
6188 int SSL_client_hello_isv2(SSL *s)
6190 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6195 if (sc->clienthello == NULL)
6197 return sc->clienthello->isv2;
6200 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6202 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6207 if (sc->clienthello == NULL)
6209 return sc->clienthello->legacy_version;
6212 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6214 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6219 if (sc->clienthello == NULL)
6222 *out = sc->clienthello->random;
6223 return SSL3_RANDOM_SIZE;
6226 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6228 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6233 if (sc->clienthello == NULL)
6236 *out = sc->clienthello->session_id;
6237 return sc->clienthello->session_id_len;
6240 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6242 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6247 if (sc->clienthello == NULL)
6250 *out = PACKET_data(&sc->clienthello->ciphersuites);
6251 return PACKET_remaining(&sc->clienthello->ciphersuites);
6254 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6256 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6261 if (sc->clienthello == NULL)
6264 *out = sc->clienthello->compressions;
6265 return sc->clienthello->compressions_len;
6268 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6273 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6278 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6280 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6281 ext = sc->clienthello->pre_proc_exts + i;
6290 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6292 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6293 ext = sc->clienthello->pre_proc_exts + i;
6295 if (ext->received_order >= num)
6297 present[ext->received_order] = ext->type;
6304 OPENSSL_free(present);
6308 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6312 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6317 if (sc->clienthello == NULL || num_exts == NULL)
6319 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6320 ext = sc->clienthello->pre_proc_exts + i;
6332 if (*num_exts < num)
6334 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6335 ext = sc->clienthello->pre_proc_exts + i;
6337 if (ext->received_order >= num)
6339 exts[ext->received_order] = ext->type;
6346 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6351 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6356 if (sc->clienthello == NULL)
6358 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6359 r = sc->clienthello->pre_proc_exts + i;
6360 if (r->present && r->type == type) {
6362 *out = PACKET_data(&r->data);
6364 *outlen = PACKET_remaining(&r->data);
6371 int SSL_free_buffers(SSL *ssl)
6374 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6381 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6384 RECORD_LAYER_release(rl);
6388 int SSL_alloc_buffers(SSL *ssl)
6390 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6395 return ssl3_setup_buffers(sc);
6398 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6400 ctx->keylog_callback = cb;
6403 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6405 return ctx->keylog_callback;
6408 static int nss_keylog_int(const char *prefix,
6410 const uint8_t *parameter_1,
6411 size_t parameter_1_len,
6412 const uint8_t *parameter_2,
6413 size_t parameter_2_len)
6416 char *cursor = NULL;
6420 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6422 if (sctx->keylog_callback == NULL)
6426 * Our output buffer will contain the following strings, rendered with
6427 * space characters in between, terminated by a NULL character: first the
6428 * prefix, then the first parameter, then the second parameter. The
6429 * meaning of each parameter depends on the specific key material being
6430 * logged. Note that the first and second parameters are encoded in
6431 * hexadecimal, so we need a buffer that is twice their lengths.
6433 prefix_len = strlen(prefix);
6434 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6435 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6438 strcpy(cursor, prefix);
6439 cursor += prefix_len;
6442 for (i = 0; i < parameter_1_len; i++) {
6443 sprintf(cursor, "%02x", parameter_1[i]);
6448 for (i = 0; i < parameter_2_len; i++) {
6449 sprintf(cursor, "%02x", parameter_2[i]);
6454 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6455 OPENSSL_clear_free(out, out_len);
6460 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6461 const uint8_t *encrypted_premaster,
6462 size_t encrypted_premaster_len,
6463 const uint8_t *premaster,
6464 size_t premaster_len)
6466 if (encrypted_premaster_len < 8) {
6467 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6471 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6472 return nss_keylog_int("RSA",
6474 encrypted_premaster,
6480 int ssl_log_secret(SSL_CONNECTION *sc,
6482 const uint8_t *secret,
6485 return nss_keylog_int(label,
6487 sc->s3.client_random,
6493 #define SSLV2_CIPHER_LEN 3
6495 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6499 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6501 if (PACKET_remaining(cipher_suites) == 0) {
6502 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6506 if (PACKET_remaining(cipher_suites) % n != 0) {
6507 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6511 OPENSSL_free(s->s3.tmp.ciphers_raw);
6512 s->s3.tmp.ciphers_raw = NULL;
6513 s->s3.tmp.ciphers_rawlen = 0;
6516 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6517 PACKET sslv2ciphers = *cipher_suites;
6518 unsigned int leadbyte;
6522 * We store the raw ciphers list in SSLv3+ format so we need to do some
6523 * preprocessing to convert the list first. If there are any SSLv2 only
6524 * ciphersuites with a non-zero leading byte then we are going to
6525 * slightly over allocate because we won't store those. But that isn't a
6528 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6529 s->s3.tmp.ciphers_raw = raw;
6531 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6534 for (s->s3.tmp.ciphers_rawlen = 0;
6535 PACKET_remaining(&sslv2ciphers) > 0;
6536 raw += TLS_CIPHER_LEN) {
6537 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6539 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6542 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6543 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6544 OPENSSL_free(s->s3.tmp.ciphers_raw);
6545 s->s3.tmp.ciphers_raw = NULL;
6546 s->s3.tmp.ciphers_rawlen = 0;
6550 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6552 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6553 &s->s3.tmp.ciphers_rawlen)) {
6554 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6560 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6561 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6562 STACK_OF(SSL_CIPHER) **scsvs)
6565 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6570 if (!PACKET_buf_init(&pkt, bytes, len))
6572 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6575 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6576 STACK_OF(SSL_CIPHER) **skp,
6577 STACK_OF(SSL_CIPHER) **scsvs_out,
6578 int sslv2format, int fatal)
6580 const SSL_CIPHER *c;
6581 STACK_OF(SSL_CIPHER) *sk = NULL;
6582 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6584 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6585 unsigned char cipher[SSLV2_CIPHER_LEN];
6587 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6589 if (PACKET_remaining(cipher_suites) == 0) {
6591 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6593 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6597 if (PACKET_remaining(cipher_suites) % n != 0) {
6599 SSLfatal(s, SSL_AD_DECODE_ERROR,
6600 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6602 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6606 sk = sk_SSL_CIPHER_new_null();
6607 scsvs = sk_SSL_CIPHER_new_null();
6608 if (sk == NULL || scsvs == NULL) {
6610 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6612 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6616 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6618 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6619 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6620 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6622 if (sslv2format && cipher[0] != '\0')
6625 /* For SSLv2-compat, ignore leading 0-byte. */
6626 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6628 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6629 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6631 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6633 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6638 if (PACKET_remaining(cipher_suites) > 0) {
6640 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6642 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6649 sk_SSL_CIPHER_free(sk);
6650 if (scsvs_out != NULL)
6653 sk_SSL_CIPHER_free(scsvs);
6656 sk_SSL_CIPHER_free(sk);
6657 sk_SSL_CIPHER_free(scsvs);
6661 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6663 ctx->max_early_data = max_early_data;
6668 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6670 return ctx->max_early_data;
6673 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6675 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6680 sc->max_early_data = max_early_data;
6685 uint32_t SSL_get_max_early_data(const SSL *s)
6687 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6692 return sc->max_early_data;
6695 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6697 ctx->recv_max_early_data = recv_max_early_data;
6702 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6704 return ctx->recv_max_early_data;
6707 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6709 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6714 sc->recv_max_early_data = recv_max_early_data;
6719 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6721 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6726 return sc->recv_max_early_data;
6729 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6731 /* Return any active Max Fragment Len extension */
6732 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6733 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6735 /* return current SSL connection setting */
6736 return sc->max_send_fragment;
6739 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6741 /* Return a value regarding an active Max Fragment Len extension */
6742 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6743 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6744 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6746 /* else limit |split_send_fragment| to current |max_send_fragment| */
6747 if (sc->split_send_fragment > sc->max_send_fragment)
6748 return sc->max_send_fragment;
6750 /* return current SSL connection setting */
6751 return sc->split_send_fragment;
6754 int SSL_stateless(SSL *s)
6757 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6759 /* TODO(QUIC): This will need further work. */
6763 /* Ensure there is no state left over from a previous invocation */
6769 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6770 ret = SSL_accept(s);
6771 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6773 if (ret > 0 && sc->ext.cookieok)
6776 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6782 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6784 ctx->pha_enabled = val;
6787 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6789 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6794 sc->pha_enabled = val;
6797 int SSL_verify_client_post_handshake(SSL *ssl)
6799 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6804 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6805 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6809 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6813 if (!SSL_is_init_finished(ssl)) {
6814 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6818 switch (sc->post_handshake_auth) {
6820 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6823 case SSL_PHA_EXT_SENT:
6824 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6826 case SSL_PHA_EXT_RECEIVED:
6828 case SSL_PHA_REQUEST_PENDING:
6829 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6831 case SSL_PHA_REQUESTED:
6832 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6836 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6838 /* checks verify_mode and algorithm_auth */
6839 if (!send_certificate_request(sc)) {
6840 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6841 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6845 ossl_statem_set_in_init(sc, 1);
6849 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6850 SSL_CTX_generate_session_ticket_fn gen_cb,
6851 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6854 ctx->generate_ticket_cb = gen_cb;
6855 ctx->decrypt_ticket_cb = dec_cb;
6856 ctx->ticket_cb_data = arg;
6860 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6861 SSL_allow_early_data_cb_fn cb,
6864 ctx->allow_early_data_cb = cb;
6865 ctx->allow_early_data_cb_data = arg;
6868 void SSL_set_allow_early_data_cb(SSL *s,
6869 SSL_allow_early_data_cb_fn cb,
6872 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6877 sc->allow_early_data_cb = cb;
6878 sc->allow_early_data_cb_data = arg;
6881 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6883 const char *properties)
6885 const EVP_CIPHER *ciph;
6887 ciph = tls_get_cipher_from_engine(nid);
6892 * If there is no engine cipher then we do an explicit fetch. This may fail
6893 * and that could be ok
6896 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6902 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6904 /* Don't up-ref an implicit EVP_CIPHER */
6905 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6909 * The cipher was explicitly fetched and therefore it is safe to cast
6912 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6915 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6920 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6922 * The cipher was explicitly fetched and therefore it is safe to cast
6925 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6929 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6931 const char *properties)
6935 md = tls_get_digest_from_engine(nid);
6939 /* Otherwise we do an explicit fetch */
6941 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6946 int ssl_evp_md_up_ref(const EVP_MD *md)
6948 /* Don't up-ref an implicit EVP_MD */
6949 if (EVP_MD_get0_provider(md) == NULL)
6953 * The digest was explicitly fetched and therefore it is safe to cast
6956 return EVP_MD_up_ref((EVP_MD *)md);
6959 void ssl_evp_md_free(const EVP_MD *md)
6964 if (EVP_MD_get0_provider(md) != NULL) {
6966 * The digest was explicitly fetched and therefore it is safe to cast
6969 EVP_MD_free((EVP_MD *)md);
6973 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6975 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6980 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6981 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6982 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6985 EVP_PKEY_free(sc->cert->dh_tmp);
6986 sc->cert->dh_tmp = dhpkey;
6990 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6992 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6993 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6994 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6997 EVP_PKEY_free(ctx->cert->dh_tmp);
6998 ctx->cert->dh_tmp = dhpkey;