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 "internal/cryptlib.h"
25 #include "internal/refcount.h"
26 #include "internal/ktls.h"
28 static int ssl_undefined_function_1(SSL_CONNECTION *sc, SSL3_RECORD *r, size_t s,
29 int t, SSL_MAC_BUF *mac, size_t macsize)
31 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
34 static int ssl_undefined_function_2(SSL_CONNECTION *sc, SSL3_RECORD *r,
35 unsigned char *s, int t)
37 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
40 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
41 unsigned char *s, size_t t, size_t *u)
43 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
46 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
48 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
51 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
52 size_t s, unsigned char *t)
54 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
57 static int ssl_undefined_function_6(int r)
59 return ssl_undefined_function(NULL);
62 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
63 size_t s, const char *t, size_t u,
64 const unsigned char *v, size_t w, int x)
66 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
69 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
71 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
74 SSL3_ENC_METHOD ssl3_undef_enc_method = {
75 ssl_undefined_function_1,
76 ssl_undefined_function_2,
77 ssl_undefined_function_8,
78 ssl_undefined_function_3,
79 ssl_undefined_function_4,
80 ssl_undefined_function_5,
81 NULL, /* client_finished_label */
82 0, /* client_finished_label_len */
83 NULL, /* server_finished_label */
84 0, /* server_finished_label_len */
85 ssl_undefined_function_6,
86 ssl_undefined_function_7,
89 struct ssl_async_args {
93 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
95 int (*func_read) (SSL *, void *, size_t, size_t *);
96 int (*func_write) (SSL *, const void *, size_t, size_t *);
97 int (*func_other) (SSL *);
101 static const struct {
107 DANETLS_MATCHING_FULL, 0, NID_undef
110 DANETLS_MATCHING_2256, 1, NID_sha256
113 DANETLS_MATCHING_2512, 2, NID_sha512
117 static int dane_ctx_enable(struct dane_ctx_st *dctx)
119 const EVP_MD **mdevp;
121 uint8_t mdmax = DANETLS_MATCHING_LAST;
122 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
125 if (dctx->mdevp != NULL)
128 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
129 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
131 if (mdord == NULL || mdevp == NULL) {
134 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
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_MALLOC_FAILURE);
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));
239 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
244 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
246 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
251 /* Zero-fill any gaps */
252 for (i = dctx->mdmax + 1; i < mtype; ++i) {
260 dctx->mdevp[mtype] = md;
261 /* Coerce ordinal of disabled matching types to 0 */
262 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
267 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
269 if (mtype > dane->dctx->mdmax)
271 return dane->dctx->mdevp[mtype];
274 static int dane_tlsa_add(SSL_DANE *dane,
277 uint8_t mtype, const unsigned char *data, size_t dlen)
280 const EVP_MD *md = NULL;
281 int ilen = (int)dlen;
285 if (dane->trecs == NULL) {
286 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
290 if (ilen < 0 || dlen != (size_t)ilen) {
291 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
295 if (usage > DANETLS_USAGE_LAST) {
296 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
300 if (selector > DANETLS_SELECTOR_LAST) {
301 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
305 if (mtype != DANETLS_MATCHING_FULL) {
306 md = tlsa_md_get(dane, mtype);
308 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
313 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
314 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
318 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
322 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
323 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
328 t->selector = selector;
330 t->data = OPENSSL_malloc(dlen);
331 if (t->data == NULL) {
333 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
336 memcpy(t->data, data, dlen);
339 /* Validate and cache full certificate or public key */
340 if (mtype == DANETLS_MATCHING_FULL) {
341 const unsigned char *p = data;
343 EVP_PKEY *pkey = NULL;
346 case DANETLS_SELECTOR_CERT:
347 if (!d2i_X509(&cert, &p, ilen) || p < data ||
348 dlen != (size_t)(p - data)) {
350 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
353 if (X509_get0_pubkey(cert) == NULL) {
355 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
359 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
365 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
366 * records that contain full certificates of trust-anchors that are
367 * not present in the wire chain. For usage PKIX-TA(0), we augment
368 * the chain with untrusted Full(0) certificates from DNS, in case
369 * they are missing from the chain.
371 if ((dane->certs == NULL &&
372 (dane->certs = sk_X509_new_null()) == NULL) ||
373 !sk_X509_push(dane->certs, cert)) {
374 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
381 case DANETLS_SELECTOR_SPKI:
382 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
383 dlen != (size_t)(p - data)) {
385 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
390 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
391 * records that contain full bare keys of trust-anchors that are
392 * not present in the wire chain.
394 if (usage == DANETLS_USAGE_DANE_TA)
403 * Find the right insertion point for the new record.
405 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
406 * they can be processed first, as they require no chain building, and no
407 * expiration or hostname checks. Because DANE-EE(3) is numerically
408 * largest, this is accomplished via descending sort by "usage".
410 * We also sort in descending order by matching ordinal to simplify
411 * the implementation of digest agility in the verification code.
413 * The choice of order for the selector is not significant, so we
414 * use the same descending order for consistency.
416 num = sk_danetls_record_num(dane->trecs);
417 for (i = 0; i < num; ++i) {
418 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
420 if (rec->usage > usage)
422 if (rec->usage < usage)
424 if (rec->selector > selector)
426 if (rec->selector < selector)
428 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
433 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
435 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
438 dane->umask |= DANETLS_USAGE_BIT(usage);
444 * Return 0 if there is only one version configured and it was disabled
445 * at configure time. Return 1 otherwise.
447 static int ssl_check_allowed_versions(int min_version, int max_version)
449 int minisdtls = 0, maxisdtls = 0;
451 /* Figure out if we're doing DTLS versions or TLS versions */
452 if (min_version == DTLS1_BAD_VER
453 || min_version >> 8 == DTLS1_VERSION_MAJOR)
455 if (max_version == DTLS1_BAD_VER
456 || max_version >> 8 == DTLS1_VERSION_MAJOR)
458 /* A wildcard version of 0 could be DTLS or TLS. */
459 if ((minisdtls && !maxisdtls && max_version != 0)
460 || (maxisdtls && !minisdtls && min_version != 0)) {
461 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
465 if (minisdtls || maxisdtls) {
466 /* Do DTLS version checks. */
467 if (min_version == 0)
468 /* Ignore DTLS1_BAD_VER */
469 min_version = DTLS1_VERSION;
470 if (max_version == 0)
471 max_version = DTLS1_2_VERSION;
472 #ifdef OPENSSL_NO_DTLS1_2
473 if (max_version == DTLS1_2_VERSION)
474 max_version = DTLS1_VERSION;
476 #ifdef OPENSSL_NO_DTLS1
477 if (min_version == DTLS1_VERSION)
478 min_version = DTLS1_2_VERSION;
480 /* Done massaging versions; do the check. */
482 #ifdef OPENSSL_NO_DTLS1
483 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
484 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
486 #ifdef OPENSSL_NO_DTLS1_2
487 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
488 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
493 /* Regular TLS version checks. */
494 if (min_version == 0)
495 min_version = SSL3_VERSION;
496 if (max_version == 0)
497 max_version = TLS1_3_VERSION;
498 #ifdef OPENSSL_NO_TLS1_3
499 if (max_version == TLS1_3_VERSION)
500 max_version = TLS1_2_VERSION;
502 #ifdef OPENSSL_NO_TLS1_2
503 if (max_version == TLS1_2_VERSION)
504 max_version = TLS1_1_VERSION;
506 #ifdef OPENSSL_NO_TLS1_1
507 if (max_version == TLS1_1_VERSION)
508 max_version = TLS1_VERSION;
510 #ifdef OPENSSL_NO_TLS1
511 if (max_version == TLS1_VERSION)
512 max_version = SSL3_VERSION;
514 #ifdef OPENSSL_NO_SSL3
515 if (min_version == SSL3_VERSION)
516 min_version = TLS1_VERSION;
518 #ifdef OPENSSL_NO_TLS1
519 if (min_version == TLS1_VERSION)
520 min_version = TLS1_1_VERSION;
522 #ifdef OPENSSL_NO_TLS1_1
523 if (min_version == TLS1_1_VERSION)
524 min_version = TLS1_2_VERSION;
526 #ifdef OPENSSL_NO_TLS1_2
527 if (min_version == TLS1_2_VERSION)
528 min_version = TLS1_3_VERSION;
530 /* Done massaging versions; do the check. */
532 #ifdef OPENSSL_NO_SSL3
533 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
535 #ifdef OPENSSL_NO_TLS1
536 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
538 #ifdef OPENSSL_NO_TLS1_1
539 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
541 #ifdef OPENSSL_NO_TLS1_2
542 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
544 #ifdef OPENSSL_NO_TLS1_3
545 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
553 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
555 * Define a VPROC function for HP NonStop build ssl library.
556 * This is used by platform version identification tools.
557 * Do not inline this procedure or make it static.
559 # define OPENSSL_VPROC_STRING_(x) x##_SSL
560 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
561 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
562 void OPENSSL_VPROC_FUNC(void) {}
566 static void clear_ciphers(SSL_CONNECTION *s)
568 /* clear the current cipher */
569 ssl_clear_cipher_ctx(s);
570 ssl_clear_hash_ctx(&s->read_hash);
571 ssl_clear_hash_ctx(&s->write_hash);
574 int SSL_clear(SSL *s)
576 if (s->method == NULL) {
577 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
581 return s->method->ssl_reset(s);
584 int ossl_ssl_connection_reset(SSL *s)
586 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
591 if (ssl_clear_bad_session(sc)) {
592 SSL_SESSION_free(sc->session);
595 SSL_SESSION_free(sc->psksession);
596 sc->psksession = NULL;
597 OPENSSL_free(sc->psksession_id);
598 sc->psksession_id = NULL;
599 sc->psksession_id_len = 0;
600 sc->hello_retry_request = 0;
601 sc->sent_tickets = 0;
607 if (sc->renegotiate) {
608 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
612 ossl_statem_clear(sc);
614 /* TODO(QUIC): Version handling not yet clear */
615 sc->version = s->method->version;
616 sc->client_version = sc->version;
617 sc->rwstate = SSL_NOTHING;
619 BUF_MEM_free(sc->init_buf);
622 sc->first_packet = 0;
624 sc->key_update = SSL_KEY_UPDATE_NONE;
626 EVP_MD_CTX_free(sc->pha_dgst);
629 /* Reset DANE verification result state */
632 X509_free(sc->dane.mcert);
633 sc->dane.mcert = NULL;
634 sc->dane.mtlsa = NULL;
636 /* Clear the verification result peername */
637 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
639 /* Clear any shared connection state */
640 OPENSSL_free(sc->shared_sigalgs);
641 sc->shared_sigalgs = NULL;
642 sc->shared_sigalgslen = 0;
645 * Check to see if we were changed into a different method, if so, revert
648 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
649 s->method->ssl_deinit(s);
650 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
651 if (!s->method->ssl_init(s))
654 if (!s->method->ssl_clear(s))
658 RECORD_LAYER_clear(&sc->rlayer);
661 * TODO(RECLAYER): The record method should probably initialy come from the
662 * SSL_METHOD, and potentially be updated later. For now though we just
665 if (!ssl_set_new_record_layer(sc,
667 OSSL_RECORD_DIRECTION_READ,
668 OSSL_RECORD_PROTECTION_LEVEL_NONE,
669 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
670 NID_undef, NULL, NULL)) {
671 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, SSL_R_NO_SUITABLE_RECORD_LAYER);
678 #ifndef OPENSSL_NO_DEPRECATED_3_0
679 /** Used to change an SSL_CTXs default SSL method type */
680 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
682 STACK_OF(SSL_CIPHER) *sk;
686 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
687 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
690 sk = ssl_create_cipher_list(ctx,
691 ctx->tls13_ciphersuites,
693 &(ctx->cipher_list_by_id),
694 OSSL_default_cipher_list(), ctx->cert);
695 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
696 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
703 SSL *SSL_new(SSL_CTX *ctx)
706 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
709 if (ctx->method == NULL) {
710 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
713 return ctx->method->ssl_new(ctx);
716 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
721 ssl->lock = CRYPTO_THREAD_lock_new();
722 if (ssl->lock == NULL)
728 ssl->method = ctx->method;
730 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
736 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
741 s = OPENSSL_zalloc(sizeof(*s));
746 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
752 #ifndef OPENSSL_NO_QUIC
753 /* set the parent (user visible) ssl to self */
757 RECORD_LAYER_init(&s->rlayer, s);
759 s->options = ctx->options;
760 s->dane.flags = ctx->dane.flags;
761 s->min_proto_version = ctx->min_proto_version;
762 s->max_proto_version = ctx->max_proto_version;
764 s->max_cert_list = ctx->max_cert_list;
765 s->max_early_data = ctx->max_early_data;
766 s->recv_max_early_data = ctx->recv_max_early_data;
767 s->num_tickets = ctx->num_tickets;
768 s->pha_enabled = ctx->pha_enabled;
770 /* Shallow copy of the ciphersuites stack */
771 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
772 if (s->tls13_ciphersuites == NULL)
776 * Earlier library versions used to copy the pointer to the CERT, not
777 * its contents; only when setting new parameters for the per-SSL
778 * copy, ssl_cert_new would be called (and the direct reference to
779 * the per-SSL_CTX settings would be lost, but those still were
780 * indirectly accessed for various purposes, and for that reason they
781 * used to be known as s->ctx->default_cert). Now we don't look at the
782 * SSL_CTX's CERT after having duplicated it once.
784 s->cert = ssl_cert_dup(ctx->cert);
788 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
789 s->msg_callback = ctx->msg_callback;
790 s->msg_callback_arg = ctx->msg_callback_arg;
791 s->verify_mode = ctx->verify_mode;
792 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
793 s->record_padding_cb = ctx->record_padding_cb;
794 s->record_padding_arg = ctx->record_padding_arg;
795 s->block_padding = ctx->block_padding;
796 s->sid_ctx_length = ctx->sid_ctx_length;
797 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
799 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
800 s->verify_callback = ctx->default_verify_callback;
801 s->generate_session_id = ctx->generate_session_id;
803 s->param = X509_VERIFY_PARAM_new();
804 if (s->param == NULL)
806 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
807 s->quiet_shutdown = ctx->quiet_shutdown;
809 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
810 s->max_send_fragment = ctx->max_send_fragment;
811 s->split_send_fragment = ctx->split_send_fragment;
812 s->max_pipelines = ctx->max_pipelines;
813 if (s->max_pipelines > 1)
814 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
815 if (ctx->default_read_buf_len > 0)
816 SSL_set_default_read_buffer_len(ssl, ctx->default_read_buf_len);
819 s->ext.debug_arg = NULL;
820 s->ext.ticket_expected = 0;
821 s->ext.status_type = ctx->ext.status_type;
822 s->ext.status_expected = 0;
823 s->ext.ocsp.ids = NULL;
824 s->ext.ocsp.exts = NULL;
825 s->ext.ocsp.resp = NULL;
826 s->ext.ocsp.resp_len = 0;
828 s->session_ctx = ctx;
829 if (ctx->ext.ecpointformats) {
830 s->ext.ecpointformats =
831 OPENSSL_memdup(ctx->ext.ecpointformats,
832 ctx->ext.ecpointformats_len);
833 if (!s->ext.ecpointformats) {
834 s->ext.ecpointformats_len = 0;
837 s->ext.ecpointformats_len =
838 ctx->ext.ecpointformats_len;
840 if (ctx->ext.supportedgroups) {
841 s->ext.supportedgroups =
842 OPENSSL_memdup(ctx->ext.supportedgroups,
843 ctx->ext.supportedgroups_len
844 * sizeof(*ctx->ext.supportedgroups));
845 if (!s->ext.supportedgroups) {
846 s->ext.supportedgroups_len = 0;
849 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
852 #ifndef OPENSSL_NO_NEXTPROTONEG
856 if (ctx->ext.alpn != NULL) {
857 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
858 if (s->ext.alpn == NULL) {
862 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
863 s->ext.alpn_len = ctx->ext.alpn_len;
866 s->verified_chain = NULL;
867 s->verify_result = X509_V_OK;
869 s->default_passwd_callback = ctx->default_passwd_callback;
870 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
872 s->key_update = SSL_KEY_UPDATE_NONE;
874 s->allow_early_data_cb = ctx->allow_early_data_cb;
875 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
877 if (!ssl->method->ssl_init(ssl))
880 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
885 #ifndef OPENSSL_NO_PSK
886 s->psk_client_callback = ctx->psk_client_callback;
887 s->psk_server_callback = ctx->psk_server_callback;
889 s->psk_find_session_cb = ctx->psk_find_session_cb;
890 s->psk_use_session_cb = ctx->psk_use_session_cb;
892 s->async_cb = ctx->async_cb;
893 s->async_cb_arg = ctx->async_cb_arg;
897 #ifndef OPENSSL_NO_CT
898 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
899 ctx->ct_validation_callback_arg))
906 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
910 int SSL_is_dtls(const SSL *s)
912 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
917 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
920 int SSL_up_ref(SSL *s)
924 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
927 REF_PRINT_COUNT("SSL", s);
928 REF_ASSERT_ISNT(i < 2);
929 return ((i > 1) ? 1 : 0);
932 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
933 unsigned int sid_ctx_len)
935 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
936 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
939 ctx->sid_ctx_length = sid_ctx_len;
940 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
945 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
946 unsigned int sid_ctx_len)
948 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
953 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
954 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
957 sc->sid_ctx_length = sid_ctx_len;
958 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
963 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
965 if (!CRYPTO_THREAD_write_lock(ctx->lock))
967 ctx->generate_session_id = cb;
968 CRYPTO_THREAD_unlock(ctx->lock);
972 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
974 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
976 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
978 sc->generate_session_id = cb;
979 CRYPTO_THREAD_unlock(ssl->lock);
983 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
987 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
988 * we can "construct" a session to give us the desired check - i.e. to
989 * find if there's a session in the hash table that would conflict with
990 * any new session built out of this id/id_len and the ssl_version in use
994 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
996 if (sc == NULL || id_len > sizeof(r.session_id))
999 r.ssl_version = sc->version;
1000 r.session_id_length = id_len;
1001 memcpy(r.session_id, id, id_len);
1003 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1005 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1006 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1010 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1012 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1015 int SSL_set_purpose(SSL *s, int purpose)
1017 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1022 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1025 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1027 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1030 int SSL_set_trust(SSL *s, int trust)
1032 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1037 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1040 int SSL_set1_host(SSL *s, const char *hostname)
1042 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1047 /* If a hostname is provided and parses as an IP address,
1048 * treat it as such. */
1049 if (hostname != NULL
1050 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1053 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1056 int SSL_add1_host(SSL *s, const char *hostname)
1058 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1063 /* If a hostname is provided and parses as an IP address,
1064 * treat it as such. */
1067 ASN1_OCTET_STRING *ip;
1070 ip = a2i_IPADDRESS(hostname);
1072 /* We didn't want it; only to check if it *is* an IP address */
1073 ASN1_OCTET_STRING_free(ip);
1075 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1078 OPENSSL_free(old_ip);
1079 /* There can be only one IP address */
1083 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1087 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1090 void SSL_set_hostflags(SSL *s, unsigned int flags)
1092 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1097 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1100 const char *SSL_get0_peername(SSL *s)
1102 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1107 return X509_VERIFY_PARAM_get0_peername(sc->param);
1110 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1112 return dane_ctx_enable(&ctx->dane);
1115 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1117 unsigned long orig = ctx->dane.flags;
1119 ctx->dane.flags |= flags;
1123 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1125 unsigned long orig = ctx->dane.flags;
1127 ctx->dane.flags &= ~flags;
1131 int SSL_dane_enable(SSL *s, const char *basedomain)
1134 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1140 if (s->ctx->dane.mdmax == 0) {
1141 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1144 if (dane->trecs != NULL) {
1145 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1150 * Default SNI name. This rejects empty names, while set1_host below
1151 * accepts them and disables host name checks. To avoid side-effects with
1152 * invalid input, set the SNI name first.
1154 if (sc->ext.hostname == NULL) {
1155 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1156 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1161 /* Primary RFC6125 reference identifier */
1162 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1163 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1169 dane->dctx = &s->ctx->dane;
1170 dane->trecs = sk_danetls_record_new_null();
1172 if (dane->trecs == NULL) {
1173 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1179 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1182 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1187 orig = sc->dane.flags;
1189 sc->dane.flags |= flags;
1193 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1196 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1201 orig = sc->dane.flags;
1203 sc->dane.flags &= ~flags;
1207 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1210 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1217 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1221 *mcert = dane->mcert;
1223 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1228 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1229 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1232 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1239 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1243 *usage = dane->mtlsa->usage;
1245 *selector = dane->mtlsa->selector;
1247 *mtype = dane->mtlsa->mtype;
1249 *data = dane->mtlsa->data;
1251 *dlen = dane->mtlsa->dlen;
1256 SSL_DANE *SSL_get0_dane(SSL *s)
1258 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1266 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1267 uint8_t mtype, const unsigned char *data, size_t dlen)
1269 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1274 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1277 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1280 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1283 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1285 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1288 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1290 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1295 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1298 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1303 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1305 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1313 void SSL_certs_clear(SSL *s)
1315 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1320 ssl_cert_clear_certs(sc->cert);
1323 void SSL_free(SSL *s)
1329 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1330 REF_PRINT_COUNT("SSL", s);
1333 REF_ASSERT_ISNT(i < 0);
1335 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1337 if (s->method != NULL)
1338 s->method->ssl_free(s);
1340 SSL_CTX_free(s->ctx);
1341 CRYPTO_THREAD_lock_free(s->lock);
1346 void ossl_ssl_connection_free(SSL *ssl)
1350 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1354 X509_VERIFY_PARAM_free(s->param);
1355 dane_final(&s->dane);
1357 RECORD_LAYER_release(&s->rlayer);
1359 /* Ignore return value */
1360 ssl_free_wbio_buffer(s);
1362 BIO_free_all(s->wbio);
1364 BIO_free_all(s->rbio);
1367 BUF_MEM_free(s->init_buf);
1369 /* add extra stuff */
1370 sk_SSL_CIPHER_free(s->cipher_list);
1371 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1372 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1373 sk_SSL_CIPHER_free(s->peer_ciphers);
1375 /* Make the next call work :-) */
1376 if (s->session != NULL) {
1377 ssl_clear_bad_session(s);
1378 SSL_SESSION_free(s->session);
1380 SSL_SESSION_free(s->psksession);
1381 OPENSSL_free(s->psksession_id);
1385 ssl_cert_free(s->cert);
1386 OPENSSL_free(s->shared_sigalgs);
1387 /* Free up if allocated */
1389 OPENSSL_free(s->ext.hostname);
1390 SSL_CTX_free(s->session_ctx);
1391 OPENSSL_free(s->ext.ecpointformats);
1392 OPENSSL_free(s->ext.peer_ecpointformats);
1393 OPENSSL_free(s->ext.supportedgroups);
1394 OPENSSL_free(s->ext.peer_supportedgroups);
1395 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1396 #ifndef OPENSSL_NO_OCSP
1397 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1399 #ifndef OPENSSL_NO_CT
1400 SCT_LIST_free(s->scts);
1401 OPENSSL_free(s->ext.scts);
1403 OPENSSL_free(s->ext.ocsp.resp);
1404 OPENSSL_free(s->ext.alpn);
1405 OPENSSL_free(s->ext.tls13_cookie);
1406 if (s->clienthello != NULL)
1407 OPENSSL_free(s->clienthello->pre_proc_exts);
1408 OPENSSL_free(s->clienthello);
1409 OPENSSL_free(s->pha_context);
1410 EVP_MD_CTX_free(s->pha_dgst);
1412 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1413 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1415 OSSL_STACK_OF_X509_free(s->verified_chain);
1417 if (ssl->method != NULL)
1418 ssl->method->ssl_deinit(ssl);
1420 ASYNC_WAIT_CTX_free(s->waitctx);
1422 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1423 OPENSSL_free(s->ext.npn);
1426 #ifndef OPENSSL_NO_SRTP
1427 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1431 void SSL_set0_rbio(SSL *s, BIO *rbio)
1433 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1438 BIO_free_all(sc->rbio);
1440 sc->rrlmethod->set1_bio(sc->rrl, sc->rbio);
1443 void SSL_set0_wbio(SSL *s, BIO *wbio)
1445 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1451 * If the output buffering BIO is still in place, remove it
1453 if (sc->bbio != NULL)
1454 sc->wbio = BIO_pop(sc->wbio);
1456 BIO_free_all(sc->wbio);
1459 /* Re-attach |bbio| to the new |wbio|. */
1460 if (sc->bbio != NULL)
1461 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1464 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1467 * For historical reasons, this function has many different cases in
1468 * ownership handling.
1471 /* If nothing has changed, do nothing */
1472 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1476 * If the two arguments are equal then one fewer reference is granted by the
1477 * caller than we want to take
1479 if (rbio != NULL && rbio == wbio)
1483 * If only the wbio is changed only adopt one reference.
1485 if (rbio == SSL_get_rbio(s)) {
1486 SSL_set0_wbio(s, wbio);
1490 * There is an asymmetry here for historical reasons. If only the rbio is
1491 * changed AND the rbio and wbio were originally different, then we only
1492 * adopt one reference.
1494 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1495 SSL_set0_rbio(s, rbio);
1499 /* Otherwise, adopt both references. */
1500 SSL_set0_rbio(s, rbio);
1501 SSL_set0_wbio(s, wbio);
1504 BIO *SSL_get_rbio(const SSL *s)
1506 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1514 BIO *SSL_get_wbio(const SSL *s)
1516 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1521 if (sc->bbio != NULL) {
1523 * If |bbio| is active, the true caller-configured BIO is its
1526 return BIO_next(sc->bbio);
1531 int SSL_get_fd(const SSL *s)
1533 return SSL_get_rfd(s);
1536 int SSL_get_rfd(const SSL *s)
1541 b = SSL_get_rbio(s);
1542 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1544 BIO_get_fd(r, &ret);
1548 int SSL_get_wfd(const SSL *s)
1553 b = SSL_get_wbio(s);
1554 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1556 BIO_get_fd(r, &ret);
1560 #ifndef OPENSSL_NO_SOCK
1561 int SSL_set_fd(SSL *s, int fd)
1566 bio = BIO_new(BIO_s_socket());
1569 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1572 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1573 SSL_set_bio(s, bio, bio);
1574 #ifndef OPENSSL_NO_KTLS
1576 * The new socket is created successfully regardless of ktls_enable.
1577 * ktls_enable doesn't change any functionality of the socket, except
1578 * changing the setsockopt to enable the processing of ktls_start.
1579 * Thus, it is not a problem to call it for non-TLS sockets.
1582 #endif /* OPENSSL_NO_KTLS */
1588 int SSL_set_wfd(SSL *s, int fd)
1590 BIO *rbio = SSL_get_rbio(s);
1592 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1593 || (int)BIO_get_fd(rbio, NULL) != fd) {
1594 BIO *bio = BIO_new(BIO_s_socket());
1597 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1600 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1601 SSL_set0_wbio(s, bio);
1602 #ifndef OPENSSL_NO_KTLS
1604 * The new socket is created successfully regardless of ktls_enable.
1605 * ktls_enable doesn't change any functionality of the socket, except
1606 * changing the setsockopt to enable the processing of ktls_start.
1607 * Thus, it is not a problem to call it for non-TLS sockets.
1610 #endif /* OPENSSL_NO_KTLS */
1613 SSL_set0_wbio(s, rbio);
1618 int SSL_set_rfd(SSL *s, int fd)
1620 BIO *wbio = SSL_get_wbio(s);
1622 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1623 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1624 BIO *bio = BIO_new(BIO_s_socket());
1627 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1630 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1631 SSL_set0_rbio(s, bio);
1634 SSL_set0_rbio(s, wbio);
1641 /* return length of latest Finished message we sent, copy to 'buf' */
1642 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1645 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1650 ret = sc->s3.tmp.finish_md_len;
1653 memcpy(buf, sc->s3.tmp.finish_md, count);
1657 /* return length of latest Finished message we expected, copy to 'buf' */
1658 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1661 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1666 ret = sc->s3.tmp.peer_finish_md_len;
1669 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1673 int SSL_get_verify_mode(const SSL *s)
1675 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1680 return sc->verify_mode;
1683 int SSL_get_verify_depth(const SSL *s)
1685 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1690 return X509_VERIFY_PARAM_get_depth(sc->param);
1693 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1694 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1699 return sc->verify_callback;
1702 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1704 return ctx->verify_mode;
1707 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1709 return X509_VERIFY_PARAM_get_depth(ctx->param);
1712 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1713 return ctx->default_verify_callback;
1716 void SSL_set_verify(SSL *s, int mode,
1717 int (*callback) (int ok, X509_STORE_CTX *ctx))
1719 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1724 sc->verify_mode = mode;
1725 if (callback != NULL)
1726 sc->verify_callback = callback;
1729 void SSL_set_verify_depth(SSL *s, int depth)
1731 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1736 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1739 void SSL_set_read_ahead(SSL *s, int yes)
1741 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1746 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1749 int SSL_get_read_ahead(const SSL *s)
1751 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1756 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1759 int SSL_pending(const SSL *s)
1761 size_t pending = s->method->ssl_pending(s);
1764 * SSL_pending cannot work properly if read-ahead is enabled
1765 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1766 * impossible to fix since SSL_pending cannot report errors that may be
1767 * observed while scanning the new data. (Note that SSL_pending() is
1768 * often used as a boolean value, so we'd better not return -1.)
1770 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1771 * we just return INT_MAX.
1773 return pending < INT_MAX ? (int)pending : INT_MAX;
1776 int SSL_has_pending(const SSL *s)
1779 * Similar to SSL_pending() but returns a 1 to indicate that we have
1780 * processed or unprocessed data available or 0 otherwise (as opposed to the
1781 * number of bytes available). Unlike SSL_pending() this will take into
1782 * account read_ahead data. A 1 return simply indicates that we have data.
1783 * That data may not result in any application data, or we may fail to parse
1784 * the records for some reason.
1786 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1788 /* Check buffered app data if any first */
1789 if (SSL_CONNECTION_IS_DTLS(sc)) {
1790 DTLS1_RECORD_DATA *rdata;
1793 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1794 while ((item = pqueue_next(&iter)) != NULL) {
1796 if (rdata->rrec.length > 0)
1801 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1804 return RECORD_LAYER_read_pending(&sc->rlayer);
1807 X509 *SSL_get1_peer_certificate(const SSL *s)
1809 X509 *r = SSL_get0_peer_certificate(s);
1817 X509 *SSL_get0_peer_certificate(const SSL *s)
1819 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1824 if (sc->session == NULL)
1827 return sc->session->peer;
1830 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1833 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1838 if (sc->session == NULL)
1841 r = sc->session->peer_chain;
1844 * If we are a client, cert_chain includes the peer's own certificate; if
1845 * we are a server, it does not.
1852 * Now in theory, since the calling process own 't' it should be safe to
1853 * modify. We need to be able to read f without being hassled
1855 int SSL_copy_session_id(SSL *t, const SSL *f)
1858 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1859 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1860 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1862 if (tsc == NULL || fsc == NULL)
1865 /* Do we need to do SSL locking? */
1866 if (!SSL_set_session(t, SSL_get_session(f))) {
1871 * what if we are setup for one protocol version but want to talk another
1873 if (t->method != f->method) {
1874 t->method->ssl_deinit(t);
1875 t->method = f->method;
1876 if (t->method->ssl_init(t) == 0)
1880 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1881 ssl_cert_free(tsc->cert);
1882 tsc->cert = fsc->cert;
1883 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1890 /* Fix this so it checks all the valid key/cert options */
1891 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1893 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1894 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1897 if (ctx->cert->key->privatekey == NULL) {
1898 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1901 return X509_check_private_key
1902 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1905 /* Fix this function so that it takes an optional type parameter */
1906 int SSL_check_private_key(const SSL *ssl)
1908 const SSL_CONNECTION *sc;
1910 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1911 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1914 if (sc->cert->key->x509 == NULL) {
1915 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1918 if (sc->cert->key->privatekey == NULL) {
1919 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1922 return X509_check_private_key(sc->cert->key->x509,
1923 sc->cert->key->privatekey);
1926 int SSL_waiting_for_async(SSL *s)
1928 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1939 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1941 ASYNC_WAIT_CTX *ctx;
1942 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1947 if ((ctx = sc->waitctx) == NULL)
1949 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1952 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1953 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1955 ASYNC_WAIT_CTX *ctx;
1956 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1961 if ((ctx = sc->waitctx) == NULL)
1963 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1967 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1969 ctx->async_cb = callback;
1973 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1975 ctx->async_cb_arg = arg;
1979 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1981 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1986 sc->async_cb = callback;
1990 int SSL_set_async_callback_arg(SSL *s, void *arg)
1992 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1997 sc->async_cb_arg = arg;
2001 int SSL_get_async_status(SSL *s, int *status)
2003 ASYNC_WAIT_CTX *ctx;
2004 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2009 if ((ctx = sc->waitctx) == NULL)
2011 *status = ASYNC_WAIT_CTX_get_status(ctx);
2015 int SSL_accept(SSL *s)
2017 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2022 if (sc->handshake_func == NULL) {
2023 /* Not properly initialized yet */
2024 SSL_set_accept_state(s);
2027 return SSL_do_handshake(s);
2030 int SSL_connect(SSL *s)
2032 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2037 if (sc->handshake_func == NULL) {
2038 /* Not properly initialized yet */
2039 SSL_set_connect_state(s);
2042 return SSL_do_handshake(s);
2045 long SSL_get_default_timeout(const SSL *s)
2047 return s->method->get_timeout();
2050 static int ssl_async_wait_ctx_cb(void *arg)
2052 SSL *s = (SSL *)arg;
2053 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2058 return sc->async_cb(s, sc->async_cb_arg);
2061 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2062 int (*func) (void *))
2065 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2070 if (sc->waitctx == NULL) {
2071 sc->waitctx = ASYNC_WAIT_CTX_new();
2072 if (sc->waitctx == NULL)
2074 if (sc->async_cb != NULL
2075 && !ASYNC_WAIT_CTX_set_callback
2076 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2080 sc->rwstate = SSL_NOTHING;
2081 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2082 sizeof(struct ssl_async_args))) {
2084 sc->rwstate = SSL_NOTHING;
2085 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2088 sc->rwstate = SSL_ASYNC_PAUSED;
2091 sc->rwstate = SSL_ASYNC_NO_JOBS;
2097 sc->rwstate = SSL_NOTHING;
2098 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2099 /* Shouldn't happen */
2104 static int ssl_io_intern(void *vargs)
2106 struct ssl_async_args *args;
2112 args = (struct ssl_async_args *)vargs;
2116 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2119 switch (args->type) {
2121 return args->f.func_read(s, buf, num, &sc->asyncrw);
2123 return args->f.func_write(s, buf, num, &sc->asyncrw);
2125 return args->f.func_other(s);
2130 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2132 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2137 if (sc->handshake_func == NULL) {
2138 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2142 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2143 sc->rwstate = SSL_NOTHING;
2147 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2148 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2149 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2153 * If we are a client and haven't received the ServerHello etc then we
2156 ossl_statem_check_finish_init(sc, 0);
2158 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2159 struct ssl_async_args args;
2165 args.type = READFUNC;
2166 args.f.func_read = s->method->ssl_read;
2168 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2169 *readbytes = sc->asyncrw;
2172 return s->method->ssl_read(s, buf, num, readbytes);
2176 int SSL_read(SSL *s, void *buf, int num)
2182 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2186 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2189 * The cast is safe here because ret should be <= INT_MAX because num is
2193 ret = (int)readbytes;
2198 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2200 int ret = ssl_read_internal(s, buf, num, readbytes);
2207 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2210 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2212 /* TODO(QUIC): This will need special handling for QUIC */
2217 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2218 return SSL_READ_EARLY_DATA_ERROR;
2221 switch (sc->early_data_state) {
2222 case SSL_EARLY_DATA_NONE:
2223 if (!SSL_in_before(s)) {
2224 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2225 return SSL_READ_EARLY_DATA_ERROR;
2229 case SSL_EARLY_DATA_ACCEPT_RETRY:
2230 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2231 ret = SSL_accept(s);
2234 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2235 return SSL_READ_EARLY_DATA_ERROR;
2239 case SSL_EARLY_DATA_READ_RETRY:
2240 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2241 sc->early_data_state = SSL_EARLY_DATA_READING;
2242 ret = SSL_read_ex(s, buf, num, readbytes);
2244 * State machine will update early_data_state to
2245 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2248 if (ret > 0 || (ret <= 0 && sc->early_data_state
2249 != SSL_EARLY_DATA_FINISHED_READING)) {
2250 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2251 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2252 : SSL_READ_EARLY_DATA_ERROR;
2255 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2258 return SSL_READ_EARLY_DATA_FINISH;
2261 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2262 return SSL_READ_EARLY_DATA_ERROR;
2266 int SSL_get_early_data_status(const SSL *s)
2268 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2270 /* TODO(QUIC): This will need special handling for QUIC */
2274 return sc->ext.early_data;
2277 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2279 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2284 if (sc->handshake_func == NULL) {
2285 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2289 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2292 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2293 struct ssl_async_args args;
2299 args.type = READFUNC;
2300 args.f.func_read = s->method->ssl_peek;
2302 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2303 *readbytes = sc->asyncrw;
2306 return s->method->ssl_peek(s, buf, num, readbytes);
2310 int SSL_peek(SSL *s, void *buf, int num)
2316 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2320 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2323 * The cast is safe here because ret should be <= INT_MAX because num is
2327 ret = (int)readbytes;
2333 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2335 int ret = ssl_peek_internal(s, buf, num, readbytes);
2342 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2344 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2349 if (sc->handshake_func == NULL) {
2350 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2354 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2355 sc->rwstate = SSL_NOTHING;
2356 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2360 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2361 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2362 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2363 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2366 /* If we are a client and haven't sent the Finished we better do that */
2367 ossl_statem_check_finish_init(sc, 1);
2369 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2371 struct ssl_async_args args;
2374 args.buf = (void *)buf;
2376 args.type = WRITEFUNC;
2377 args.f.func_write = s->method->ssl_write;
2379 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2380 *written = sc->asyncrw;
2383 return s->method->ssl_write(s, buf, num, written);
2387 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2390 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2395 if (sc->handshake_func == NULL) {
2396 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2400 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2401 sc->rwstate = SSL_NOTHING;
2402 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2406 if (!BIO_get_ktls_send(sc->wbio)) {
2407 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2411 /* If we have an alert to send, lets send it */
2412 if (sc->s3.alert_dispatch) {
2413 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2415 /* SSLfatal() already called if appropriate */
2418 /* if it went, fall through and send more stuff */
2421 sc->rwstate = SSL_WRITING;
2422 if (BIO_flush(sc->wbio) <= 0) {
2423 if (!BIO_should_retry(sc->wbio)) {
2424 sc->rwstate = SSL_NOTHING;
2427 set_sys_error(EAGAIN);
2433 #ifdef OPENSSL_NO_KTLS
2434 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2435 "can't call ktls_sendfile(), ktls disabled");
2438 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2440 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2441 if ((get_last_sys_error() == EAGAIN) ||
2442 (get_last_sys_error() == EINTR) ||
2443 (get_last_sys_error() == EBUSY))
2444 BIO_set_retry_write(sc->wbio);
2447 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2450 sc->rwstate = SSL_NOTHING;
2455 int SSL_write(SSL *s, const void *buf, int num)
2461 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2465 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2468 * The cast is safe here because ret should be <= INT_MAX because num is
2477 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2479 int ret = ssl_write_internal(s, buf, num, written);
2486 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2488 int ret, early_data_state;
2490 uint32_t partialwrite;
2491 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2493 /* TODO(QUIC): This will need special handling for QUIC */
2497 switch (sc->early_data_state) {
2498 case SSL_EARLY_DATA_NONE:
2500 || !SSL_in_before(s)
2501 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2502 && (sc->psk_use_session_cb == NULL))) {
2503 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2508 case SSL_EARLY_DATA_CONNECT_RETRY:
2509 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2510 ret = SSL_connect(s);
2513 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2518 case SSL_EARLY_DATA_WRITE_RETRY:
2519 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2521 * We disable partial write for early data because we don't keep track
2522 * of how many bytes we've written between the SSL_write_ex() call and
2523 * the flush if the flush needs to be retried)
2525 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2526 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2527 ret = SSL_write_ex(s, buf, num, &writtmp);
2528 sc->mode |= partialwrite;
2530 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2533 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2536 case SSL_EARLY_DATA_WRITE_FLUSH:
2537 /* The buffering BIO is still in place so we need to flush it */
2538 if (statem_flush(sc) != 1)
2541 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2544 case SSL_EARLY_DATA_FINISHED_READING:
2545 case SSL_EARLY_DATA_READ_RETRY:
2546 early_data_state = sc->early_data_state;
2547 /* We are a server writing to an unauthenticated client */
2548 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2549 ret = SSL_write_ex(s, buf, num, written);
2550 /* The buffering BIO is still in place */
2552 (void)BIO_flush(sc->wbio);
2553 sc->early_data_state = early_data_state;
2557 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2562 int SSL_shutdown(SSL *s)
2565 * Note that this function behaves differently from what one might
2566 * expect. Return values are 0 for no success (yet), 1 for success; but
2567 * calling it once is usually not enough, even if blocking I/O is used
2568 * (see ssl3_shutdown).
2570 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2575 if (sc->handshake_func == NULL) {
2576 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2580 if (!SSL_in_init(s)) {
2581 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2582 struct ssl_async_args args;
2584 memset(&args, 0, sizeof(args));
2586 args.type = OTHERFUNC;
2587 args.f.func_other = s->method->ssl_shutdown;
2589 return ssl_start_async_job(s, &args, ssl_io_intern);
2591 return s->method->ssl_shutdown(s);
2594 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2599 int SSL_key_update(SSL *s, int updatetype)
2601 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2606 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2607 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2611 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2612 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2613 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2617 if (!SSL_is_init_finished(s)) {
2618 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2622 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2623 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2627 ossl_statem_set_in_init(sc, 1);
2628 sc->key_update = updatetype;
2632 int SSL_get_key_update_type(const SSL *s)
2634 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2639 return sc->key_update;
2643 * Can we accept a renegotiation request? If yes, set the flag and
2644 * return 1 if yes. If not, raise error and return 0.
2646 static int can_renegotiate(const SSL_CONNECTION *sc)
2648 if (SSL_CONNECTION_IS_TLS13(sc)) {
2649 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2653 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2654 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2661 int SSL_renegotiate(SSL *s)
2663 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2668 if (!can_renegotiate(sc))
2671 sc->renegotiate = 1;
2672 sc->new_session = 1;
2673 return s->method->ssl_renegotiate(s);
2676 int SSL_renegotiate_abbreviated(SSL *s)
2678 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2683 if (!can_renegotiate(sc))
2686 sc->renegotiate = 1;
2687 sc->new_session = 0;
2688 return s->method->ssl_renegotiate(s);
2691 int SSL_renegotiate_pending(const SSL *s)
2693 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2699 * becomes true when negotiation is requested; false again once a
2700 * handshake has finished
2702 return (sc->renegotiate != 0);
2705 int SSL_new_session_ticket(SSL *s)
2707 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2712 /* If we are in init because we're sending tickets, okay to send more. */
2713 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2714 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2715 || !SSL_CONNECTION_IS_TLS13(sc))
2717 sc->ext.extra_tickets_expected++;
2718 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2719 ossl_statem_set_in_init(sc, 1);
2723 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2726 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2728 /* TODO(QUIC): Special handling for some ctrls will be needed */
2733 case SSL_CTRL_GET_READ_AHEAD:
2734 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2735 case SSL_CTRL_SET_READ_AHEAD:
2736 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2737 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2740 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2741 sc->msg_callback_arg = parg;
2745 return (sc->mode |= larg);
2746 case SSL_CTRL_CLEAR_MODE:
2747 return (sc->mode &= ~larg);
2748 case SSL_CTRL_GET_MAX_CERT_LIST:
2749 return (long)sc->max_cert_list;
2750 case SSL_CTRL_SET_MAX_CERT_LIST:
2753 l = (long)sc->max_cert_list;
2754 sc->max_cert_list = (size_t)larg;
2756 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2757 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2759 #ifndef OPENSSL_NO_KTLS
2760 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2762 #endif /* OPENSSL_NO_KTLS */
2763 sc->max_send_fragment = larg;
2764 if (sc->max_send_fragment < sc->split_send_fragment)
2765 sc->split_send_fragment = sc->max_send_fragment;
2767 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2768 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2770 sc->split_send_fragment = larg;
2772 case SSL_CTRL_SET_MAX_PIPELINES:
2773 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2775 sc->max_pipelines = larg;
2777 RECORD_LAYER_set_read_ahead(&sc->rlayer, 1);
2779 case SSL_CTRL_GET_RI_SUPPORT:
2780 return sc->s3.send_connection_binding;
2781 case SSL_CTRL_SET_RETRY_VERIFY:
2782 sc->rwstate = SSL_RETRY_VERIFY;
2784 case SSL_CTRL_CERT_FLAGS:
2785 return (sc->cert->cert_flags |= larg);
2786 case SSL_CTRL_CLEAR_CERT_FLAGS:
2787 return (sc->cert->cert_flags &= ~larg);
2789 case SSL_CTRL_GET_RAW_CIPHERLIST:
2791 if (sc->s3.tmp.ciphers_raw == NULL)
2793 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2794 return (int)sc->s3.tmp.ciphers_rawlen;
2796 return TLS_CIPHER_LEN;
2798 case SSL_CTRL_GET_EXTMS_SUPPORT:
2799 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2801 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2805 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2806 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2807 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2808 &sc->min_proto_version);
2809 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2810 return sc->min_proto_version;
2811 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2812 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2813 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2814 &sc->max_proto_version);
2815 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2816 return sc->max_proto_version;
2818 return s->method->ssl_ctrl(s, cmd, larg, parg);
2822 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2824 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2830 case SSL_CTRL_SET_MSG_CALLBACK:
2831 sc->msg_callback = (void (*)
2832 (int write_p, int version, int content_type,
2833 const void *buf, size_t len, SSL *ssl,
2838 return s->method->ssl_callback_ctrl(s, cmd, fp);
2842 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2844 return ctx->sessions;
2847 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2851 if (ssl_tsan_lock(ctx)) {
2852 res = tsan_load(stat);
2853 ssl_tsan_unlock(ctx);
2858 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2861 /* For some cases with ctx == NULL perform syntax checks */
2864 case SSL_CTRL_SET_GROUPS_LIST:
2865 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2866 case SSL_CTRL_SET_SIGALGS_LIST:
2867 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2868 return tls1_set_sigalgs_list(NULL, parg, 0);
2875 case SSL_CTRL_GET_READ_AHEAD:
2876 return ctx->read_ahead;
2877 case SSL_CTRL_SET_READ_AHEAD:
2878 l = ctx->read_ahead;
2879 ctx->read_ahead = larg;
2882 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2883 ctx->msg_callback_arg = parg;
2886 case SSL_CTRL_GET_MAX_CERT_LIST:
2887 return (long)ctx->max_cert_list;
2888 case SSL_CTRL_SET_MAX_CERT_LIST:
2891 l = (long)ctx->max_cert_list;
2892 ctx->max_cert_list = (size_t)larg;
2895 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2898 l = (long)ctx->session_cache_size;
2899 ctx->session_cache_size = (size_t)larg;
2901 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2902 return (long)ctx->session_cache_size;
2903 case SSL_CTRL_SET_SESS_CACHE_MODE:
2904 l = ctx->session_cache_mode;
2905 ctx->session_cache_mode = larg;
2907 case SSL_CTRL_GET_SESS_CACHE_MODE:
2908 return ctx->session_cache_mode;
2910 case SSL_CTRL_SESS_NUMBER:
2911 return lh_SSL_SESSION_num_items(ctx->sessions);
2912 case SSL_CTRL_SESS_CONNECT:
2913 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2914 case SSL_CTRL_SESS_CONNECT_GOOD:
2915 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2916 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2917 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2918 case SSL_CTRL_SESS_ACCEPT:
2919 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2920 case SSL_CTRL_SESS_ACCEPT_GOOD:
2921 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2922 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2923 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2924 case SSL_CTRL_SESS_HIT:
2925 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2926 case SSL_CTRL_SESS_CB_HIT:
2927 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2928 case SSL_CTRL_SESS_MISSES:
2929 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2930 case SSL_CTRL_SESS_TIMEOUTS:
2931 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2932 case SSL_CTRL_SESS_CACHE_FULL:
2933 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2935 return (ctx->mode |= larg);
2936 case SSL_CTRL_CLEAR_MODE:
2937 return (ctx->mode &= ~larg);
2938 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2939 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2941 ctx->max_send_fragment = larg;
2942 if (ctx->max_send_fragment < ctx->split_send_fragment)
2943 ctx->split_send_fragment = ctx->max_send_fragment;
2945 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2946 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2948 ctx->split_send_fragment = larg;
2950 case SSL_CTRL_SET_MAX_PIPELINES:
2951 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2953 ctx->max_pipelines = larg;
2955 case SSL_CTRL_CERT_FLAGS:
2956 return (ctx->cert->cert_flags |= larg);
2957 case SSL_CTRL_CLEAR_CERT_FLAGS:
2958 return (ctx->cert->cert_flags &= ~larg);
2959 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2960 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2961 && ssl_set_version_bound(ctx->method->version, (int)larg,
2962 &ctx->min_proto_version);
2963 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2964 return ctx->min_proto_version;
2965 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2966 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2967 && ssl_set_version_bound(ctx->method->version, (int)larg,
2968 &ctx->max_proto_version);
2969 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2970 return ctx->max_proto_version;
2972 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2976 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2979 case SSL_CTRL_SET_MSG_CALLBACK:
2980 ctx->msg_callback = (void (*)
2981 (int write_p, int version, int content_type,
2982 const void *buf, size_t len, SSL *ssl,
2987 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2991 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3000 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3001 const SSL_CIPHER *const *bp)
3003 if ((*ap)->id > (*bp)->id)
3005 if ((*ap)->id < (*bp)->id)
3011 * return a STACK of the ciphers available for the SSL and in order of
3014 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3016 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3019 if (sc->cipher_list != NULL) {
3020 return sc->cipher_list;
3021 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3022 return s->ctx->cipher_list;
3028 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3030 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3032 if (sc == NULL || !sc->server)
3034 return sc->peer_ciphers;
3037 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3039 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3041 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3046 ciphers = SSL_get_ciphers(s);
3049 if (!ssl_set_client_disabled(sc))
3051 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3052 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3053 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3055 sk = sk_SSL_CIPHER_new_null();
3058 if (!sk_SSL_CIPHER_push(sk, c)) {
3059 sk_SSL_CIPHER_free(sk);
3067 /** return a STACK of the ciphers available for the SSL and in order of
3069 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3072 if (s->cipher_list_by_id != NULL)
3073 return s->cipher_list_by_id;
3074 else if (s->ssl.ctx != NULL
3075 && s->ssl.ctx->cipher_list_by_id != NULL)
3076 return s->ssl.ctx->cipher_list_by_id;
3081 /** The old interface to get the same thing as SSL_get_ciphers() */
3082 const char *SSL_get_cipher_list(const SSL *s, int n)
3084 const SSL_CIPHER *c;
3085 STACK_OF(SSL_CIPHER) *sk;
3089 sk = SSL_get_ciphers(s);
3090 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3092 c = sk_SSL_CIPHER_value(sk, n);
3098 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3100 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3103 return ctx->cipher_list;
3108 * Distinguish between ciphers controlled by set_ciphersuite() and
3109 * set_cipher_list() when counting.
3111 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3114 const SSL_CIPHER *c;
3118 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3119 c = sk_SSL_CIPHER_value(sk, i);
3120 if (c->min_tls >= TLS1_3_VERSION)
3127 /** specify the ciphers to be used by default by the SSL_CTX */
3128 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3130 STACK_OF(SSL_CIPHER) *sk;
3132 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3133 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3136 * ssl_create_cipher_list may return an empty stack if it was unable to
3137 * find a cipher matching the given rule string (for example if the rule
3138 * string specifies a cipher which has been disabled). This is not an
3139 * error as far as ssl_create_cipher_list is concerned, and hence
3140 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3144 else if (cipher_list_tls12_num(sk) == 0) {
3145 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3151 /** specify the ciphers to be used by the SSL */
3152 int SSL_set_cipher_list(SSL *s, const char *str)
3154 STACK_OF(SSL_CIPHER) *sk;
3155 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3160 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3161 &sc->cipher_list, &sc->cipher_list_by_id, str,
3163 /* see comment in SSL_CTX_set_cipher_list */
3166 else if (cipher_list_tls12_num(sk) == 0) {
3167 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3173 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3176 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3177 const SSL_CIPHER *c;
3179 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3185 || sc->peer_ciphers == NULL
3190 clntsk = sc->peer_ciphers;
3191 srvrsk = SSL_get_ciphers(s);
3192 if (clntsk == NULL || srvrsk == NULL)
3195 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3198 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3201 c = sk_SSL_CIPHER_value(clntsk, i);
3202 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3205 n = strlen(c->name);
3222 * Return the requested servername (SNI) value. Note that the behaviour varies
3224 * - whether this is called by the client or the server,
3225 * - if we are before or during/after the handshake,
3226 * - if a resumption or normal handshake is being attempted/has occurred
3227 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3229 * Note that only the host_name type is defined (RFC 3546).
3231 const char *SSL_get_servername(const SSL *s, const int type)
3233 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3240 * If we don't know if we are the client or the server yet then we assume
3243 server = sc->handshake_func == NULL ? 0 : sc->server;
3245 if (type != TLSEXT_NAMETYPE_host_name)
3251 * In TLSv1.3 on the server SNI is not associated with the session
3252 * but in TLSv1.2 or below it is.
3254 * Before the handshake:
3257 * During/after the handshake (TLSv1.2 or below resumption occurred):
3258 * - If a servername was accepted by the server in the original
3259 * handshake then it will return that servername, or NULL otherwise.
3261 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3262 * - The function will return the servername requested by the client in
3263 * this handshake or NULL if none was requested.
3265 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3266 return sc->session->ext.hostname;
3271 * Before the handshake:
3272 * - If a servername has been set via a call to
3273 * SSL_set_tlsext_host_name() then it will return that servername
3274 * - If one has not been set, but a TLSv1.2 resumption is being
3275 * attempted and the session from the original handshake had a
3276 * servername accepted by the server then it will return that
3278 * - Otherwise it returns NULL
3280 * During/after the handshake (TLSv1.2 or below resumption occurred):
3281 * - If the session from the original handshake had a servername accepted
3282 * by the server then it will return that servername.
3283 * - Otherwise it returns the servername set via
3284 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3286 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3287 * - It will return the servername set via SSL_set_tlsext_host_name()
3288 * (or NULL if it was not called).
3290 if (SSL_in_before(s)) {
3291 if (sc->ext.hostname == NULL
3292 && sc->session != NULL
3293 && sc->session->ssl_version != TLS1_3_VERSION)
3294 return sc->session->ext.hostname;
3296 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3297 && sc->session->ext.hostname != NULL)
3298 return sc->session->ext.hostname;
3302 return sc->ext.hostname;
3305 int SSL_get_servername_type(const SSL *s)
3307 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3308 return TLSEXT_NAMETYPE_host_name;
3313 * SSL_select_next_proto implements the standard protocol selection. It is
3314 * expected that this function is called from the callback set by
3315 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3316 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3317 * not included in the length. A byte string of length 0 is invalid. No byte
3318 * string may be truncated. The current, but experimental algorithm for
3319 * selecting the protocol is: 1) If the server doesn't support NPN then this
3320 * is indicated to the callback. In this case, the client application has to
3321 * abort the connection or have a default application level protocol. 2) If
3322 * the server supports NPN, but advertises an empty list then the client
3323 * selects the first protocol in its list, but indicates via the API that this
3324 * fallback case was enacted. 3) Otherwise, the client finds the first
3325 * protocol in the server's list that it supports and selects this protocol.
3326 * This is because it's assumed that the server has better information about
3327 * which protocol a client should use. 4) If the client doesn't support any
3328 * of the server's advertised protocols, then this is treated the same as
3329 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3330 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3332 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3333 const unsigned char *server,
3334 unsigned int server_len,
3335 const unsigned char *client, unsigned int client_len)
3338 const unsigned char *result;
3339 int status = OPENSSL_NPN_UNSUPPORTED;
3342 * For each protocol in server preference order, see if we support it.
3344 for (i = 0; i < server_len;) {
3345 for (j = 0; j < client_len;) {
3346 if (server[i] == client[j] &&
3347 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3348 /* We found a match */
3349 result = &server[i];
3350 status = OPENSSL_NPN_NEGOTIATED;
3360 /* There's no overlap between our protocols and the server's list. */
3362 status = OPENSSL_NPN_NO_OVERLAP;
3365 *out = (unsigned char *)result + 1;
3366 *outlen = result[0];
3370 #ifndef OPENSSL_NO_NEXTPROTONEG
3372 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3373 * client's requested protocol for this connection and returns 0. If the
3374 * client didn't request any protocol, then *data is set to NULL. Note that
3375 * the client can request any protocol it chooses. The value returned from
3376 * this function need not be a member of the list of supported protocols
3377 * provided by the callback.
3379 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3382 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3385 /* We have no other way to indicate error */
3391 *data = sc->ext.npn;
3392 if (*data == NULL) {
3395 *len = (unsigned int)sc->ext.npn_len;
3400 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3401 * a TLS server needs a list of supported protocols for Next Protocol
3402 * Negotiation. The returned list must be in wire format. The list is
3403 * returned by setting |out| to point to it and |outlen| to its length. This
3404 * memory will not be modified, but one should assume that the SSL* keeps a
3405 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3406 * wishes to advertise. Otherwise, no such extension will be included in the
3409 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3410 SSL_CTX_npn_advertised_cb_func cb,
3413 ctx->ext.npn_advertised_cb = cb;
3414 ctx->ext.npn_advertised_cb_arg = arg;
3418 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3419 * client needs to select a protocol from the server's provided list. |out|
3420 * must be set to point to the selected protocol (which may be within |in|).
3421 * The length of the protocol name must be written into |outlen|. The
3422 * server's advertised protocols are provided in |in| and |inlen|. The
3423 * callback can assume that |in| is syntactically valid. The client must
3424 * select a protocol. It is fatal to the connection if this callback returns
3425 * a value other than SSL_TLSEXT_ERR_OK.
3427 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3428 SSL_CTX_npn_select_cb_func cb,
3431 ctx->ext.npn_select_cb = cb;
3432 ctx->ext.npn_select_cb_arg = arg;
3436 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3440 if (protos_len < 2 || protos == NULL)
3443 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3444 if (protos[idx] == 0)
3447 return idx == protos_len;
3450 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3451 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3452 * length-prefixed strings). Returns 0 on success.
3454 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3455 unsigned int protos_len)
3457 unsigned char *alpn;
3459 if (protos_len == 0 || protos == NULL) {
3460 OPENSSL_free(ctx->ext.alpn);
3461 ctx->ext.alpn = NULL;
3462 ctx->ext.alpn_len = 0;
3465 /* Not valid per RFC */
3466 if (!alpn_value_ok(protos, protos_len))
3469 alpn = OPENSSL_memdup(protos, protos_len);
3471 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3474 OPENSSL_free(ctx->ext.alpn);
3475 ctx->ext.alpn = alpn;
3476 ctx->ext.alpn_len = protos_len;
3482 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3483 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3484 * length-prefixed strings). Returns 0 on success.
3486 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3487 unsigned int protos_len)
3489 unsigned char *alpn;
3490 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3495 if (protos_len == 0 || protos == NULL) {
3496 OPENSSL_free(sc->ext.alpn);
3497 sc->ext.alpn = NULL;
3498 sc->ext.alpn_len = 0;
3501 /* Not valid per RFC */
3502 if (!alpn_value_ok(protos, protos_len))
3505 alpn = OPENSSL_memdup(protos, protos_len);
3507 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3510 OPENSSL_free(sc->ext.alpn);
3511 sc->ext.alpn = alpn;
3512 sc->ext.alpn_len = protos_len;
3518 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3519 * called during ClientHello processing in order to select an ALPN protocol
3520 * from the client's list of offered protocols.
3522 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3523 SSL_CTX_alpn_select_cb_func cb,
3526 ctx->ext.alpn_select_cb = cb;
3527 ctx->ext.alpn_select_cb_arg = arg;
3531 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3532 * On return it sets |*data| to point to |*len| bytes of protocol name
3533 * (not including the leading length-prefix byte). If the server didn't
3534 * respond with a negotiated protocol then |*len| will be zero.
3536 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3539 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3542 /* We have no other way to indicate error */
3548 *data = sc->s3.alpn_selected;
3552 *len = (unsigned int)sc->s3.alpn_selected_len;
3555 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3556 const char *label, size_t llen,
3557 const unsigned char *context, size_t contextlen,
3560 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3565 if (sc->session == NULL
3566 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3569 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3571 contextlen, use_context);
3574 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3575 const char *label, size_t llen,
3576 const unsigned char *context,
3579 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3584 if (sc->version != TLS1_3_VERSION)
3587 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3588 context, contextlen);
3591 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3593 const unsigned char *session_id = a->session_id;
3595 unsigned char tmp_storage[4];
3597 if (a->session_id_length < sizeof(tmp_storage)) {
3598 memset(tmp_storage, 0, sizeof(tmp_storage));
3599 memcpy(tmp_storage, a->session_id, a->session_id_length);
3600 session_id = tmp_storage;
3604 ((unsigned long)session_id[0]) |
3605 ((unsigned long)session_id[1] << 8L) |
3606 ((unsigned long)session_id[2] << 16L) |
3607 ((unsigned long)session_id[3] << 24L);
3612 * NB: If this function (or indeed the hash function which uses a sort of
3613 * coarser function than this one) is changed, ensure
3614 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3615 * being able to construct an SSL_SESSION that will collide with any existing
3616 * session with a matching session ID.
3618 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3620 if (a->ssl_version != b->ssl_version)
3622 if (a->session_id_length != b->session_id_length)
3624 return memcmp(a->session_id, b->session_id, a->session_id_length);
3628 * These wrapper functions should remain rather than redeclaring
3629 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3630 * variable. The reason is that the functions aren't static, they're exposed
3634 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3635 const SSL_METHOD *meth)
3637 SSL_CTX *ret = NULL;
3640 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3644 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3647 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3648 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3651 ret = OPENSSL_zalloc(sizeof(*ret));
3655 /* Init the reference counting before any call to SSL_CTX_free */
3656 ret->references = 1;
3657 ret->lock = CRYPTO_THREAD_lock_new();
3658 if (ret->lock == NULL) {
3659 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3664 #ifdef TSAN_REQUIRES_LOCKING
3665 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3666 if (ret->tsan_lock == NULL) {
3667 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3672 ret->libctx = libctx;
3673 if (propq != NULL) {
3674 ret->propq = OPENSSL_strdup(propq);
3675 if (ret->propq == NULL)
3680 ret->min_proto_version = 0;
3681 ret->max_proto_version = 0;
3682 ret->mode = SSL_MODE_AUTO_RETRY;
3683 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3684 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3685 /* We take the system default. */
3686 ret->session_timeout = meth->get_timeout();
3687 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3688 ret->verify_mode = SSL_VERIFY_NONE;
3689 if ((ret->cert = ssl_cert_new()) == NULL)
3692 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3693 if (ret->sessions == NULL)
3695 ret->cert_store = X509_STORE_new();
3696 if (ret->cert_store == NULL)
3698 #ifndef OPENSSL_NO_CT
3699 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3700 if (ret->ctlog_store == NULL)
3704 /* initialize cipher/digest methods table */
3705 if (!ssl_load_ciphers(ret))
3707 /* initialise sig algs */
3708 if (!ssl_setup_sig_algs(ret))
3712 if (!ssl_load_groups(ret))
3715 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3718 if (!ssl_create_cipher_list(ret,
3719 ret->tls13_ciphersuites,
3720 &ret->cipher_list, &ret->cipher_list_by_id,
3721 OSSL_default_cipher_list(), ret->cert)
3722 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3723 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3727 ret->param = X509_VERIFY_PARAM_new();
3728 if (ret->param == NULL)
3732 * If these aren't available from the provider we'll get NULL returns.
3733 * That's fine but will cause errors later if SSLv3 is negotiated
3735 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3736 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3738 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3741 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3744 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3747 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3750 /* No compression for DTLS */
3751 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3752 ret->comp_methods = SSL_COMP_get_compression_methods();
3754 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3755 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3757 /* Setup RFC5077 ticket keys */
3758 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3759 sizeof(ret->ext.tick_key_name), 0) <= 0)
3760 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3761 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3762 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3763 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3764 ret->options |= SSL_OP_NO_TICKET;
3766 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3767 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3770 #ifndef OPENSSL_NO_SRP
3771 if (!ssl_ctx_srp_ctx_init_intern(ret))
3774 #ifndef OPENSSL_NO_ENGINE
3775 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3776 # define eng_strx(x) #x
3777 # define eng_str(x) eng_strx(x)
3778 /* Use specific client engine automatically... ignore errors */
3781 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3784 ENGINE_load_builtin_engines();
3785 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3787 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3793 * Disable compression by default to prevent CRIME. Applications can
3794 * re-enable compression by configuring
3795 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3796 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3797 * middlebox compatibility by default. This may be disabled by default in
3798 * a later OpenSSL version.
3800 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3802 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3805 * We cannot usefully set a default max_early_data here (which gets
3806 * propagated in SSL_new(), for the following reason: setting the
3807 * SSL field causes tls_construct_stoc_early_data() to tell the
3808 * client that early data will be accepted when constructing a TLS 1.3
3809 * session ticket, and the client will accordingly send us early data
3810 * when using that ticket (if the client has early data to send).
3811 * However, in order for the early data to actually be consumed by
3812 * the application, the application must also have calls to
3813 * SSL_read_early_data(); otherwise we'll just skip past the early data
3814 * and ignore it. So, since the application must add calls to
3815 * SSL_read_early_data(), we also require them to add
3816 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3817 * eliminating the bandwidth-wasting early data in the case described
3820 ret->max_early_data = 0;
3823 * Default recv_max_early_data is a fully loaded single record. Could be
3824 * split across multiple records in practice. We set this differently to
3825 * max_early_data so that, in the default case, we do not advertise any
3826 * support for early_data, but if a client were to send us some (e.g.
3827 * because of an old, stale ticket) then we will tolerate it and skip over
3830 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3832 /* By default we send two session tickets automatically in TLSv1.3 */
3833 ret->num_tickets = 2;
3835 ssl_ctx_system_config(ret);
3839 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3845 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3847 return SSL_CTX_new_ex(NULL, NULL, meth);
3850 int SSL_CTX_up_ref(SSL_CTX *ctx)
3854 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3857 REF_PRINT_COUNT("SSL_CTX", ctx);
3858 REF_ASSERT_ISNT(i < 2);
3859 return ((i > 1) ? 1 : 0);
3862 void SSL_CTX_free(SSL_CTX *a)
3870 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3871 REF_PRINT_COUNT("SSL_CTX", a);
3874 REF_ASSERT_ISNT(i < 0);
3876 X509_VERIFY_PARAM_free(a->param);
3877 dane_ctx_final(&a->dane);
3880 * Free internal session cache. However: the remove_cb() may reference
3881 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3882 * after the sessions were flushed.
3883 * As the ex_data handling routines might also touch the session cache,
3884 * the most secure solution seems to be: empty (flush) the cache, then
3885 * free ex_data, then finally free the cache.
3886 * (See ticket [openssl.org #212].)
3888 if (a->sessions != NULL)
3889 SSL_CTX_flush_sessions(a, 0);
3891 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3892 lh_SSL_SESSION_free(a->sessions);
3893 X509_STORE_free(a->cert_store);
3894 #ifndef OPENSSL_NO_CT
3895 CTLOG_STORE_free(a->ctlog_store);
3897 sk_SSL_CIPHER_free(a->cipher_list);
3898 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3899 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3900 ssl_cert_free(a->cert);
3901 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3902 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3903 OSSL_STACK_OF_X509_free(a->extra_certs);
3904 a->comp_methods = NULL;
3905 #ifndef OPENSSL_NO_SRTP
3906 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3908 #ifndef OPENSSL_NO_SRP
3909 ssl_ctx_srp_ctx_free_intern(a);
3911 #ifndef OPENSSL_NO_ENGINE
3912 tls_engine_finish(a->client_cert_engine);
3915 OPENSSL_free(a->ext.ecpointformats);
3916 OPENSSL_free(a->ext.supportedgroups);
3917 OPENSSL_free(a->ext.supported_groups_default);
3918 OPENSSL_free(a->ext.alpn);
3919 OPENSSL_secure_free(a->ext.secure);
3921 ssl_evp_md_free(a->md5);
3922 ssl_evp_md_free(a->sha1);
3924 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3925 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3926 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3927 ssl_evp_md_free(a->ssl_digest_methods[j]);
3928 for (j = 0; j < a->group_list_len; j++) {
3929 OPENSSL_free(a->group_list[j].tlsname);
3930 OPENSSL_free(a->group_list[j].realname);
3931 OPENSSL_free(a->group_list[j].algorithm);
3933 OPENSSL_free(a->group_list);
3935 OPENSSL_free(a->sigalg_lookup_cache);
3937 CRYPTO_THREAD_lock_free(a->lock);
3938 #ifdef TSAN_REQUIRES_LOCKING
3939 CRYPTO_THREAD_lock_free(a->tsan_lock);
3942 OPENSSL_free(a->propq);
3947 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3949 ctx->default_passwd_callback = cb;
3952 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3954 ctx->default_passwd_callback_userdata = u;
3957 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3959 return ctx->default_passwd_callback;
3962 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3964 return ctx->default_passwd_callback_userdata;
3967 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3969 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3974 sc->default_passwd_callback = cb;
3977 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3979 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3984 sc->default_passwd_callback_userdata = u;
3987 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3989 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3994 return sc->default_passwd_callback;
3997 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3999 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4004 return sc->default_passwd_callback_userdata;
4007 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4008 int (*cb) (X509_STORE_CTX *, void *),
4011 ctx->app_verify_callback = cb;
4012 ctx->app_verify_arg = arg;
4015 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4016 int (*cb) (int, X509_STORE_CTX *))
4018 ctx->verify_mode = mode;
4019 ctx->default_verify_callback = cb;
4022 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4024 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4027 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4029 ssl_cert_set_cert_cb(c->cert, cb, arg);
4032 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4034 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4039 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4042 void ssl_set_masks(SSL_CONNECTION *s)
4045 uint32_t *pvalid = s->s3.tmp.valid_flags;
4046 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4047 unsigned long mask_k, mask_a;
4048 int have_ecc_cert, ecdsa_ok;
4053 dh_tmp = (c->dh_tmp != NULL
4054 || c->dh_tmp_cb != NULL
4057 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4058 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4059 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4060 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4064 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4065 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4067 #ifndef OPENSSL_NO_GOST
4068 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4069 mask_k |= SSL_kGOST | SSL_kGOST18;
4070 mask_a |= SSL_aGOST12;
4072 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4073 mask_k |= SSL_kGOST | SSL_kGOST18;
4074 mask_a |= SSL_aGOST12;
4076 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4077 mask_k |= SSL_kGOST;
4078 mask_a |= SSL_aGOST01;
4089 * If we only have an RSA-PSS certificate allow RSA authentication
4090 * if TLS 1.2 and peer supports it.
4093 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4094 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4095 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4102 mask_a |= SSL_aNULL;
4105 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4106 * depending on the key usage extension.
4108 if (have_ecc_cert) {
4110 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4111 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4112 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4115 mask_a |= SSL_aECDSA;
4117 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4118 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4119 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4120 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4121 mask_a |= SSL_aECDSA;
4123 /* Allow Ed448 for TLS 1.2 if peer supports it */
4124 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4125 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4126 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4127 mask_a |= SSL_aECDSA;
4129 mask_k |= SSL_kECDHE;
4131 #ifndef OPENSSL_NO_PSK
4134 if (mask_k & SSL_kRSA)
4135 mask_k |= SSL_kRSAPSK;
4136 if (mask_k & SSL_kDHE)
4137 mask_k |= SSL_kDHEPSK;
4138 if (mask_k & SSL_kECDHE)
4139 mask_k |= SSL_kECDHEPSK;
4142 s->s3.tmp.mask_k = mask_k;
4143 s->s3.tmp.mask_a = mask_a;
4146 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4148 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4149 /* key usage, if present, must allow signing */
4150 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4151 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4155 return 1; /* all checks are ok */
4158 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4159 const unsigned char **serverinfo,
4160 size_t *serverinfo_length)
4162 CERT_PKEY *cpk = s->s3.tmp.cert;
4163 *serverinfo_length = 0;
4165 if (cpk == NULL || cpk->serverinfo == NULL)
4168 *serverinfo = cpk->serverinfo;
4169 *serverinfo_length = cpk->serverinfo_length;
4173 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4178 * If the session_id_length is 0, we are not supposed to cache it, and it
4179 * would be rather hard to do anyway :-)
4181 if (s->session->session_id_length == 0)
4185 * If sid_ctx_length is 0 there is no specific application context
4186 * associated with this session, so when we try to resume it and
4187 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4188 * indication that this is actually a session for the proper application
4189 * context, and the *handshake* will fail, not just the resumption attempt.
4190 * Do not cache (on the server) these sessions that are not resumable
4191 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4193 if (s->server && s->session->sid_ctx_length == 0
4194 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4197 i = s->session_ctx->session_cache_mode;
4199 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4201 * Add the session to the internal cache. In server side TLSv1.3 we
4202 * normally don't do this because by default it's a full stateless ticket
4203 * with only a dummy session id so there is no reason to cache it,
4205 * - we are doing early_data, in which case we cache so that we can
4207 * - the application has set a remove_session_cb so needs to know about
4208 * session timeout events
4209 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4211 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4212 && (!SSL_CONNECTION_IS_TLS13(s)
4214 || (s->max_early_data > 0
4215 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4216 || s->session_ctx->remove_session_cb != NULL
4217 || (s->options & SSL_OP_NO_TICKET) != 0))
4218 SSL_CTX_add_session(s->session_ctx, s->session);
4221 * Add the session to the external cache. We do this even in server side
4222 * TLSv1.3 without early data because some applications just want to
4223 * know about the creation of a session and aren't doing a full cache.
4225 if (s->session_ctx->new_session_cb != NULL) {
4226 SSL_SESSION_up_ref(s->session);
4227 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4229 SSL_SESSION_free(s->session);
4233 /* auto flush every 255 connections */
4234 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4235 TSAN_QUALIFIER int *stat;
4237 if (mode & SSL_SESS_CACHE_CLIENT)
4238 stat = &s->session_ctx->stats.sess_connect_good;
4240 stat = &s->session_ctx->stats.sess_accept_good;
4241 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4242 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4246 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4251 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4256 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4259 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4261 /* TODO(QUIC): Do we want this for QUIC? */
4263 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4266 if (s->method != meth) {
4267 const SSL_METHOD *sm = s->method;
4268 int (*hf) (SSL *) = sc->handshake_func;
4270 if (sm->version == meth->version)
4275 ret = s->method->ssl_init(s);
4278 if (hf == sm->ssl_connect)
4279 sc->handshake_func = meth->ssl_connect;
4280 else if (hf == sm->ssl_accept)
4281 sc->handshake_func = meth->ssl_accept;
4286 int SSL_get_error(const SSL *s, int i)
4291 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4294 return SSL_ERROR_NONE;
4296 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4298 return SSL_ERROR_SSL;
4301 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4302 * where we do encode the error
4304 if ((l = ERR_peek_error()) != 0) {
4305 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4306 return SSL_ERROR_SYSCALL;
4308 return SSL_ERROR_SSL;
4311 if (SSL_want_read(s)) {
4312 bio = SSL_get_rbio(s);
4313 if (BIO_should_read(bio))
4314 return SSL_ERROR_WANT_READ;
4315 else if (BIO_should_write(bio))
4317 * This one doesn't make too much sense ... We never try to write
4318 * to the rbio, and an application program where rbio and wbio
4319 * are separate couldn't even know what it should wait for.
4320 * However if we ever set s->rwstate incorrectly (so that we have
4321 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4322 * wbio *are* the same, this test works around that bug; so it
4323 * might be safer to keep it.
4325 return SSL_ERROR_WANT_WRITE;
4326 else if (BIO_should_io_special(bio)) {
4327 reason = BIO_get_retry_reason(bio);
4328 if (reason == BIO_RR_CONNECT)
4329 return SSL_ERROR_WANT_CONNECT;
4330 else if (reason == BIO_RR_ACCEPT)
4331 return SSL_ERROR_WANT_ACCEPT;
4333 return SSL_ERROR_SYSCALL; /* unknown */
4337 if (SSL_want_write(s)) {
4338 /* Access wbio directly - in order to use the buffered bio if present */
4340 if (BIO_should_write(bio))
4341 return SSL_ERROR_WANT_WRITE;
4342 else if (BIO_should_read(bio))
4344 * See above (SSL_want_read(s) with BIO_should_write(bio))
4346 return SSL_ERROR_WANT_READ;
4347 else if (BIO_should_io_special(bio)) {
4348 reason = BIO_get_retry_reason(bio);
4349 if (reason == BIO_RR_CONNECT)
4350 return SSL_ERROR_WANT_CONNECT;
4351 else if (reason == BIO_RR_ACCEPT)
4352 return SSL_ERROR_WANT_ACCEPT;
4354 return SSL_ERROR_SYSCALL;
4357 if (SSL_want_x509_lookup(s))
4358 return SSL_ERROR_WANT_X509_LOOKUP;
4359 if (SSL_want_retry_verify(s))
4360 return SSL_ERROR_WANT_RETRY_VERIFY;
4361 if (SSL_want_async(s))
4362 return SSL_ERROR_WANT_ASYNC;
4363 if (SSL_want_async_job(s))
4364 return SSL_ERROR_WANT_ASYNC_JOB;
4365 if (SSL_want_client_hello_cb(s))
4366 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4368 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4369 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4370 return SSL_ERROR_ZERO_RETURN;
4372 return SSL_ERROR_SYSCALL;
4375 static int ssl_do_handshake_intern(void *vargs)
4377 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4379 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4384 return sc->handshake_func(s);
4387 int SSL_do_handshake(SSL *s)
4390 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4392 /* TODO(QUIC): Special handling for QUIC will be needed */
4396 if (sc->handshake_func == NULL) {
4397 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4401 ossl_statem_check_finish_init(sc, -1);
4403 s->method->ssl_renegotiate_check(s, 0);
4405 if (SSL_in_init(s) || SSL_in_before(s)) {
4406 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4407 struct ssl_async_args args;
4409 memset(&args, 0, sizeof(args));
4412 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4414 ret = sc->handshake_func(s);
4420 void SSL_set_accept_state(SSL *s)
4422 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4424 /* TODO(QUIC): Special handling for QUIC will be needed */
4430 ossl_statem_clear(sc);
4431 sc->handshake_func = s->method->ssl_accept;
4435 void SSL_set_connect_state(SSL *s)
4437 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4439 /* TODO(QUIC): Special handling for QUIC will be needed */
4445 ossl_statem_clear(sc);
4446 sc->handshake_func = s->method->ssl_connect;
4450 int ssl_undefined_function(SSL *s)
4452 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4456 int ssl_undefined_void_function(void)
4458 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4462 int ssl_undefined_const_function(const SSL *s)
4467 const SSL_METHOD *ssl_bad_method(int ver)
4469 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4473 const char *ssl_protocol_to_string(int version)
4477 case TLS1_3_VERSION:
4480 case TLS1_2_VERSION:
4483 case TLS1_1_VERSION:
4498 case DTLS1_2_VERSION:
4506 const char *SSL_get_version(const SSL *s)
4508 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4510 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4514 return ssl_protocol_to_string(sc->version);
4517 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4519 STACK_OF(X509_NAME) *sk;
4528 if ((sk = sk_X509_NAME_new_null()) == NULL)
4530 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4531 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4533 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4536 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4538 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4547 SSL *SSL_dup(SSL *s)
4551 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4552 SSL_CONNECTION *retsc;
4553 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4558 /* If we're not quiescent, just up_ref! */
4559 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4560 CRYPTO_UP_REF(&s->references, &i, s->lock);
4565 * Otherwise, copy configuration state, and session if set.
4567 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4569 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4572 if (sc->session != NULL) {
4574 * Arranges to share the same session via up_ref. This "copies"
4575 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4577 if (!SSL_copy_session_id(ret, s))
4581 * No session has been established yet, so we have to expect that
4582 * s->cert or ret->cert will be changed later -- they should not both
4583 * point to the same object, and thus we can't use
4584 * SSL_copy_session_id.
4586 if (!SSL_set_ssl_method(ret, s->method))
4589 if (sc->cert != NULL) {
4590 ssl_cert_free(retsc->cert);
4591 retsc->cert = ssl_cert_dup(sc->cert);
4592 if (retsc->cert == NULL)
4596 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4597 (int)sc->sid_ctx_length))
4601 if (!ssl_dane_dup(retsc, sc))
4603 retsc->version = sc->version;
4604 retsc->options = sc->options;
4605 retsc->min_proto_version = sc->min_proto_version;
4606 retsc->max_proto_version = sc->max_proto_version;
4607 retsc->mode = sc->mode;
4608 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4609 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4610 retsc->msg_callback = sc->msg_callback;
4611 retsc->msg_callback_arg = sc->msg_callback_arg;
4612 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4613 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4614 retsc->generate_session_id = sc->generate_session_id;
4616 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4618 /* copy app data, a little dangerous perhaps */
4619 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4622 retsc->server = sc->server;
4623 if (sc->handshake_func) {
4625 SSL_set_accept_state(ret);
4627 SSL_set_connect_state(ret);
4629 retsc->shutdown = sc->shutdown;
4630 retsc->hit = sc->hit;
4632 retsc->default_passwd_callback = sc->default_passwd_callback;
4633 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4635 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4637 /* dup the cipher_list and cipher_list_by_id stacks */
4638 if (sc->cipher_list != NULL) {
4639 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4642 if (sc->cipher_list_by_id != NULL)
4643 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4647 /* Dup the client_CA list */
4648 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4649 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4659 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4661 if (s->enc_read_ctx != NULL) {
4662 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4663 s->enc_read_ctx = NULL;
4665 if (s->enc_write_ctx != NULL) {
4666 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4667 s->enc_write_ctx = NULL;
4669 #ifndef OPENSSL_NO_COMP
4670 COMP_CTX_free(s->expand);
4672 COMP_CTX_free(s->compress);
4677 X509 *SSL_get_certificate(const SSL *s)
4679 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4684 if (sc->cert != NULL)
4685 return sc->cert->key->x509;
4690 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4692 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4697 if (sc->cert != NULL)
4698 return sc->cert->key->privatekey;
4703 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4705 if (ctx->cert != NULL)
4706 return ctx->cert->key->x509;
4711 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4713 if (ctx->cert != NULL)
4714 return ctx->cert->key->privatekey;
4719 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4721 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4726 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4727 return sc->session->cipher;
4731 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4733 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4738 return sc->s3.tmp.new_cipher;
4741 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4743 #ifndef OPENSSL_NO_COMP
4744 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4749 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4755 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4757 #ifndef OPENSSL_NO_COMP
4758 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4763 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4769 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4773 if (s->bbio != NULL) {
4774 /* Already buffered. */
4778 bbio = BIO_new(BIO_f_buffer());
4779 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4781 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4785 s->wbio = BIO_push(bbio, s->wbio);
4790 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4792 /* callers ensure s is never null */
4793 if (s->bbio == NULL)
4796 s->wbio = BIO_pop(s->wbio);
4803 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4805 ctx->quiet_shutdown = mode;
4808 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4810 return ctx->quiet_shutdown;
4813 void SSL_set_quiet_shutdown(SSL *s, int mode)
4815 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4817 /* TODO(QUIC): Do we want this for QUIC? */
4821 sc->quiet_shutdown = mode;
4824 int SSL_get_quiet_shutdown(const SSL *s)
4826 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4828 /* TODO(QUIC): Do we want this for QUIC? */
4832 return sc->quiet_shutdown;
4835 void SSL_set_shutdown(SSL *s, int mode)
4837 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4839 /* TODO(QUIC): Do we want this for QUIC? */
4843 sc->shutdown = mode;
4846 int SSL_get_shutdown(const SSL *s)
4848 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4850 /* TODO(QUIC): Do we want this for QUIC? */
4854 return sc->shutdown;
4857 int SSL_version(const SSL *s)
4859 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4861 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4868 int SSL_client_version(const SSL *s)
4870 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4872 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4876 return sc->client_version;
4879 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4884 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4887 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4889 /* TODO(QUIC): Do we need this for QUIC support? */
4893 if (ssl->ctx == ctx)
4896 ctx = sc->session_ctx;
4897 new_cert = ssl_cert_dup(ctx->cert);
4898 if (new_cert == NULL) {
4902 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4903 ssl_cert_free(new_cert);
4907 ssl_cert_free(sc->cert);
4908 sc->cert = new_cert;
4911 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4912 * so setter APIs must prevent invalid lengths from entering the system.
4914 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4918 * If the session ID context matches that of the parent SSL_CTX,
4919 * inherit it from the new SSL_CTX as well. If however the context does
4920 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4921 * leave it unchanged.
4923 if ((ssl->ctx != NULL) &&
4924 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4925 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4926 sc->sid_ctx_length = ctx->sid_ctx_length;
4927 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4930 SSL_CTX_up_ref(ctx);
4931 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4937 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4939 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4943 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4945 X509_LOOKUP *lookup;
4947 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4951 /* We ignore errors, in case the directory doesn't exist */
4954 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4961 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4963 X509_LOOKUP *lookup;
4965 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4969 /* We ignore errors, in case the file doesn't exist */
4972 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4980 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4982 X509_LOOKUP *lookup;
4984 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4988 /* We ignore errors, in case the directory doesn't exist */
4991 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4998 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5000 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5004 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5006 return X509_STORE_load_path(ctx->cert_store, CApath);
5009 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5011 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5015 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5018 if (CAfile == NULL && CApath == NULL)
5020 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5022 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5027 void SSL_set_info_callback(SSL *ssl,
5028 void (*cb) (const SSL *ssl, int type, int val))
5030 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5035 sc->info_callback = cb;
5039 * One compiler (Diab DCC) doesn't like argument names in returned function
5042 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5045 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5050 return sc->info_callback;
5053 void SSL_set_verify_result(SSL *ssl, long arg)
5055 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5060 sc->verify_result = arg;
5063 long SSL_get_verify_result(const SSL *ssl)
5065 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5070 return sc->verify_result;
5073 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5075 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5081 return sizeof(sc->s3.client_random);
5082 if (outlen > sizeof(sc->s3.client_random))
5083 outlen = sizeof(sc->s3.client_random);
5084 memcpy(out, sc->s3.client_random, outlen);
5088 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5090 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5096 return sizeof(sc->s3.server_random);
5097 if (outlen > sizeof(sc->s3.server_random))
5098 outlen = sizeof(sc->s3.server_random);
5099 memcpy(out, sc->s3.server_random, outlen);
5103 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5104 unsigned char *out, size_t outlen)
5107 return session->master_key_length;
5108 if (outlen > session->master_key_length)
5109 outlen = session->master_key_length;
5110 memcpy(out, session->master_key, outlen);
5114 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5117 if (len > sizeof(sess->master_key))
5120 memcpy(sess->master_key, in, len);
5121 sess->master_key_length = len;
5126 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5128 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5131 void *SSL_get_ex_data(const SSL *s, int idx)
5133 return CRYPTO_get_ex_data(&s->ex_data, idx);
5136 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5138 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5141 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5143 return CRYPTO_get_ex_data(&s->ex_data, idx);
5146 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5148 return ctx->cert_store;
5151 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5153 X509_STORE_free(ctx->cert_store);
5154 ctx->cert_store = store;
5157 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5160 X509_STORE_up_ref(store);
5161 SSL_CTX_set_cert_store(ctx, store);
5164 int SSL_want(const SSL *s)
5166 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5174 #ifndef OPENSSL_NO_PSK
5175 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5177 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5178 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5181 OPENSSL_free(ctx->cert->psk_identity_hint);
5182 if (identity_hint != NULL) {
5183 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5184 if (ctx->cert->psk_identity_hint == NULL)
5187 ctx->cert->psk_identity_hint = NULL;
5191 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5193 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5198 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5199 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5202 OPENSSL_free(sc->cert->psk_identity_hint);
5203 if (identity_hint != NULL) {
5204 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5205 if (sc->cert->psk_identity_hint == NULL)
5208 sc->cert->psk_identity_hint = NULL;
5212 const char *SSL_get_psk_identity_hint(const SSL *s)
5214 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5216 if (sc == NULL || sc->session == NULL)
5219 return sc->session->psk_identity_hint;
5222 const char *SSL_get_psk_identity(const SSL *s)
5224 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5226 if (sc == NULL || sc->session == NULL)
5229 return sc->session->psk_identity;
5232 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5234 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5239 sc->psk_client_callback = cb;
5242 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5244 ctx->psk_client_callback = cb;
5247 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5249 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5254 sc->psk_server_callback = cb;
5257 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5259 ctx->psk_server_callback = cb;
5263 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5270 sc->psk_find_session_cb = cb;
5273 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5274 SSL_psk_find_session_cb_func cb)
5276 ctx->psk_find_session_cb = cb;
5279 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5281 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5286 sc->psk_use_session_cb = cb;
5289 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5290 SSL_psk_use_session_cb_func cb)
5292 ctx->psk_use_session_cb = cb;
5295 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5296 void (*cb) (int write_p, int version,
5297 int content_type, const void *buf,
5298 size_t len, SSL *ssl, void *arg))
5300 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5303 void SSL_set_msg_callback(SSL *ssl,
5304 void (*cb) (int write_p, int version,
5305 int content_type, const void *buf,
5306 size_t len, SSL *ssl, void *arg))
5308 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5311 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5312 int (*cb) (SSL *ssl,
5316 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5317 (void (*)(void))cb);
5320 void SSL_set_not_resumable_session_callback(SSL *ssl,
5321 int (*cb) (SSL *ssl,
5322 int is_forward_secure))
5324 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5325 (void (*)(void))cb);
5328 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5329 size_t (*cb) (SSL *ssl, int type,
5330 size_t len, void *arg))
5332 ctx->record_padding_cb = cb;
5335 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5337 ctx->record_padding_arg = arg;
5340 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5342 return ctx->record_padding_arg;
5345 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5347 /* block size of 0 or 1 is basically no padding */
5348 if (block_size == 1)
5349 ctx->block_padding = 0;
5350 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5351 ctx->block_padding = block_size;
5357 int SSL_set_record_padding_callback(SSL *ssl,
5358 size_t (*cb) (SSL *ssl, int type,
5359 size_t len, void *arg))
5362 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5367 b = SSL_get_wbio(ssl);
5368 if (b == NULL || !BIO_get_ktls_send(b)) {
5369 sc->record_padding_cb = cb;
5375 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5377 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5382 sc->record_padding_arg = arg;
5385 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5387 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5392 return sc->record_padding_arg;
5395 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5397 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5402 /* block size of 0 or 1 is basically no padding */
5403 if (block_size == 1)
5404 sc->block_padding = 0;
5405 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5406 sc->block_padding = block_size;
5412 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5414 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5419 sc->num_tickets = num_tickets;
5424 size_t SSL_get_num_tickets(const SSL *s)
5426 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5431 return sc->num_tickets;
5434 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5436 ctx->num_tickets = num_tickets;
5441 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5443 return ctx->num_tickets;
5447 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5448 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5449 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5450 * Returns the newly allocated ctx;
5453 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5455 ssl_clear_hash_ctx(hash);
5456 *hash = EVP_MD_CTX_new();
5457 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5458 EVP_MD_CTX_free(*hash);
5465 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5468 EVP_MD_CTX_free(*hash);
5472 /* Retrieve handshake hashes */
5473 int ssl_handshake_hash(SSL_CONNECTION *s,
5474 unsigned char *out, size_t outlen,
5477 EVP_MD_CTX *ctx = NULL;
5478 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5479 int hashleni = EVP_MD_CTX_get_size(hdgst);
5482 if (hashleni < 0 || (size_t)hashleni > outlen) {
5483 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5487 ctx = EVP_MD_CTX_new();
5489 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5493 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5494 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5495 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5499 *hashlen = hashleni;
5503 EVP_MD_CTX_free(ctx);
5507 int SSL_session_reused(const SSL *s)
5509 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5517 int SSL_is_server(const SSL *s)
5519 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5527 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5528 void SSL_set_debug(SSL *s, int debug)
5530 /* Old function was do-nothing anyway... */
5536 void SSL_set_security_level(SSL *s, int level)
5538 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5543 sc->cert->sec_level = level;
5546 int SSL_get_security_level(const SSL *s)
5548 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5553 return sc->cert->sec_level;
5556 void SSL_set_security_callback(SSL *s,
5557 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5558 int op, int bits, int nid,
5559 void *other, void *ex))
5561 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5566 sc->cert->sec_cb = cb;
5569 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5570 const SSL_CTX *ctx, int op,
5571 int bits, int nid, void *other,
5573 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5578 return sc->cert->sec_cb;
5581 void SSL_set0_security_ex_data(SSL *s, void *ex)
5583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5588 sc->cert->sec_ex = ex;
5591 void *SSL_get0_security_ex_data(const SSL *s)
5593 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5598 return sc->cert->sec_ex;
5601 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5603 ctx->cert->sec_level = level;
5606 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5608 return ctx->cert->sec_level;
5611 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5612 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5613 int op, int bits, int nid,
5614 void *other, void *ex))
5616 ctx->cert->sec_cb = cb;
5619 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5625 return ctx->cert->sec_cb;
5628 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5630 ctx->cert->sec_ex = ex;
5633 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5635 return ctx->cert->sec_ex;
5638 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5640 return ctx->options;
5643 uint64_t SSL_get_options(const SSL *s)
5645 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5653 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5655 return ctx->options |= op;
5658 uint64_t SSL_set_options(SSL *s, uint64_t op)
5660 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5665 return sc->options |= op;
5668 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5670 return ctx->options &= ~op;
5673 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5675 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5680 return sc->options &= ~op;
5683 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5685 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5690 return sc->verified_chain;
5693 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5695 #ifndef OPENSSL_NO_CT
5698 * Moves SCTs from the |src| stack to the |dst| stack.
5699 * The source of each SCT will be set to |origin|.
5700 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5702 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5704 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5705 sct_source_t origin)
5711 *dst = sk_SCT_new_null();
5713 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5718 while ((sct = sk_SCT_pop(src)) != NULL) {
5719 if (SCT_set_source(sct, origin) != 1)
5722 if (sk_SCT_push(*dst, sct) <= 0)
5730 sk_SCT_push(src, sct); /* Put the SCT back */
5735 * Look for data collected during ServerHello and parse if found.
5736 * Returns the number of SCTs extracted.
5738 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5740 int scts_extracted = 0;
5742 if (s->ext.scts != NULL) {
5743 const unsigned char *p = s->ext.scts;
5744 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5746 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5748 SCT_LIST_free(scts);
5751 return scts_extracted;
5755 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5756 * contains an SCT X509 extension. They will be stored in |s->scts|.
5758 * - The number of SCTs extracted, assuming an OCSP response exists.
5759 * - 0 if no OCSP response exists or it contains no SCTs.
5760 * - A negative integer if an error occurs.
5762 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5764 # ifndef OPENSSL_NO_OCSP
5765 int scts_extracted = 0;
5766 const unsigned char *p;
5767 OCSP_BASICRESP *br = NULL;
5768 OCSP_RESPONSE *rsp = NULL;
5769 STACK_OF(SCT) *scts = NULL;
5772 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5775 p = s->ext.ocsp.resp;
5776 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5780 br = OCSP_response_get1_basic(rsp);
5784 for (i = 0; i < OCSP_resp_count(br); ++i) {
5785 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5791 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5793 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5794 if (scts_extracted < 0)
5798 SCT_LIST_free(scts);
5799 OCSP_BASICRESP_free(br);
5800 OCSP_RESPONSE_free(rsp);
5801 return scts_extracted;
5803 /* Behave as if no OCSP response exists */
5809 * Attempts to extract SCTs from the peer certificate.
5810 * Return the number of SCTs extracted, or a negative integer if an error
5813 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5815 int scts_extracted = 0;
5816 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5819 STACK_OF(SCT) *scts =
5820 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5823 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5825 SCT_LIST_free(scts);
5828 return scts_extracted;
5832 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5833 * response (if it exists) and X509v3 extensions in the certificate.
5834 * Returns NULL if an error occurs.
5836 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5838 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5843 if (!sc->scts_parsed) {
5844 if (ct_extract_tls_extension_scts(sc) < 0 ||
5845 ct_extract_ocsp_response_scts(sc) < 0 ||
5846 ct_extract_x509v3_extension_scts(sc) < 0)
5849 sc->scts_parsed = 1;
5856 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5857 const STACK_OF(SCT) *scts, void *unused_arg)
5862 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5863 const STACK_OF(SCT) *scts, void *unused_arg)
5865 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5868 for (i = 0; i < count; ++i) {
5869 SCT *sct = sk_SCT_value(scts, i);
5870 int status = SCT_get_validation_status(sct);
5872 if (status == SCT_VALIDATION_STATUS_VALID)
5875 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5879 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5882 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5888 * Since code exists that uses the custom extension handler for CT, look
5889 * for this and throw an error if they have already registered to use CT.
5891 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5892 TLSEXT_TYPE_signed_certificate_timestamp))
5894 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5898 if (callback != NULL) {
5900 * If we are validating CT, then we MUST accept SCTs served via OCSP
5902 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5906 sc->ct_validation_callback = callback;
5907 sc->ct_validation_callback_arg = arg;
5912 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5913 ssl_ct_validation_cb callback, void *arg)
5916 * Since code exists that uses the custom extension handler for CT, look for
5917 * this and throw an error if they have already registered to use CT.
5919 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5920 TLSEXT_TYPE_signed_certificate_timestamp))
5922 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5926 ctx->ct_validation_callback = callback;
5927 ctx->ct_validation_callback_arg = arg;
5931 int SSL_ct_is_enabled(const SSL *s)
5933 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5938 return sc->ct_validation_callback != NULL;
5941 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5943 return ctx->ct_validation_callback != NULL;
5946 int ssl_validate_ct(SSL_CONNECTION *s)
5949 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5951 SSL_DANE *dane = &s->dane;
5952 CT_POLICY_EVAL_CTX *ctx = NULL;
5953 const STACK_OF(SCT) *scts;
5956 * If no callback is set, the peer is anonymous, or its chain is invalid,
5957 * skip SCT validation - just return success. Applications that continue
5958 * handshakes without certificates, with unverified chains, or pinned leaf
5959 * certificates are outside the scope of the WebPKI and CT.
5961 * The above exclusions notwithstanding the vast majority of peers will
5962 * have rather ordinary certificate chains validated by typical
5963 * applications that perform certificate verification and therefore will
5964 * process SCTs when enabled.
5966 if (s->ct_validation_callback == NULL || cert == NULL ||
5967 s->verify_result != X509_V_OK ||
5968 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5972 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5973 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5975 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5976 switch (dane->mtlsa->usage) {
5977 case DANETLS_USAGE_DANE_TA:
5978 case DANETLS_USAGE_DANE_EE:
5983 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5984 SSL_CONNECTION_GET_CTX(s)->propq);
5986 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5990 issuer = sk_X509_value(s->verified_chain, 1);
5991 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5992 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5993 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
5994 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
5995 CT_POLICY_EVAL_CTX_set_time(
5996 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
5998 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6001 * This function returns success (> 0) only when all the SCTs are valid, 0
6002 * when some are invalid, and < 0 on various internal errors (out of
6003 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6004 * reason to abort the handshake, that decision is up to the callback.
6005 * Therefore, we error out only in the unexpected case that the return
6006 * value is negative.
6008 * XXX: One might well argue that the return value of this function is an
6009 * unfortunate design choice. Its job is only to determine the validation
6010 * status of each of the provided SCTs. So long as it correctly separates
6011 * the wheat from the chaff it should return success. Failure in this case
6012 * ought to correspond to an inability to carry out its duties.
6014 if (SCT_LIST_validate(scts, ctx) < 0) {
6015 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6019 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6021 ret = 0; /* This function returns 0 on failure */
6023 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6026 CT_POLICY_EVAL_CTX_free(ctx);
6028 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6029 * failure return code here. Also the application may wish the complete
6030 * the handshake, and then disconnect cleanly at a higher layer, after
6031 * checking the verification status of the completed connection.
6033 * We therefore force a certificate verification failure which will be
6034 * visible via SSL_get_verify_result() and cached as part of any resumed
6037 * Note: the permissive callback is for information gathering only, always
6038 * returns success, and does not affect verification status. Only the
6039 * strict callback or a custom application-specified callback can trigger
6040 * connection failure or record a verification error.
6043 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6047 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6049 switch (validation_mode) {
6051 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6053 case SSL_CT_VALIDATION_PERMISSIVE:
6054 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6055 case SSL_CT_VALIDATION_STRICT:
6056 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6060 int SSL_enable_ct(SSL *s, int validation_mode)
6062 switch (validation_mode) {
6064 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6066 case SSL_CT_VALIDATION_PERMISSIVE:
6067 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6068 case SSL_CT_VALIDATION_STRICT:
6069 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6073 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6075 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6078 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6080 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6083 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6085 CTLOG_STORE_free(ctx->ctlog_store);
6086 ctx->ctlog_store = logs;
6089 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6091 return ctx->ctlog_store;
6094 #endif /* OPENSSL_NO_CT */
6096 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6099 c->client_hello_cb = cb;
6100 c->client_hello_cb_arg = arg;
6103 int SSL_client_hello_isv2(SSL *s)
6105 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6110 if (sc->clienthello == NULL)
6112 return sc->clienthello->isv2;
6115 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6117 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6122 if (sc->clienthello == NULL)
6124 return sc->clienthello->legacy_version;
6127 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6129 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6134 if (sc->clienthello == NULL)
6137 *out = sc->clienthello->random;
6138 return SSL3_RANDOM_SIZE;
6141 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6143 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6148 if (sc->clienthello == NULL)
6151 *out = sc->clienthello->session_id;
6152 return sc->clienthello->session_id_len;
6155 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6157 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6162 if (sc->clienthello == NULL)
6165 *out = PACKET_data(&sc->clienthello->ciphersuites);
6166 return PACKET_remaining(&sc->clienthello->ciphersuites);
6169 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6171 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6176 if (sc->clienthello == NULL)
6179 *out = sc->clienthello->compressions;
6180 return sc->clienthello->compressions_len;
6183 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6188 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6193 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6195 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6196 ext = sc->clienthello->pre_proc_exts + i;
6205 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6206 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6209 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6210 ext = sc->clienthello->pre_proc_exts + i;
6212 if (ext->received_order >= num)
6214 present[ext->received_order] = ext->type;
6221 OPENSSL_free(present);
6225 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6229 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6234 if (sc->clienthello == NULL || num_exts == NULL)
6236 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6237 ext = sc->clienthello->pre_proc_exts + i;
6249 if (*num_exts < num)
6251 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6252 ext = sc->clienthello->pre_proc_exts + i;
6254 if (ext->received_order >= num)
6256 exts[ext->received_order] = ext->type;
6263 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6268 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6273 if (sc->clienthello == NULL)
6275 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6276 r = sc->clienthello->pre_proc_exts + i;
6277 if (r->present && r->type == type) {
6279 *out = PACKET_data(&r->data);
6281 *outlen = PACKET_remaining(&r->data);
6288 int SSL_free_buffers(SSL *ssl)
6291 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6298 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6301 RECORD_LAYER_release(rl);
6305 int SSL_alloc_buffers(SSL *ssl)
6307 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6312 return ssl3_setup_buffers(sc);
6315 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6317 ctx->keylog_callback = cb;
6320 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6322 return ctx->keylog_callback;
6325 static int nss_keylog_int(const char *prefix,
6327 const uint8_t *parameter_1,
6328 size_t parameter_1_len,
6329 const uint8_t *parameter_2,
6330 size_t parameter_2_len)
6333 char *cursor = NULL;
6337 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6339 if (sctx->keylog_callback == NULL)
6343 * Our output buffer will contain the following strings, rendered with
6344 * space characters in between, terminated by a NULL character: first the
6345 * prefix, then the first parameter, then the second parameter. The
6346 * meaning of each parameter depends on the specific key material being
6347 * logged. Note that the first and second parameters are encoded in
6348 * hexadecimal, so we need a buffer that is twice their lengths.
6350 prefix_len = strlen(prefix);
6351 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6352 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6353 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6357 strcpy(cursor, prefix);
6358 cursor += prefix_len;
6361 for (i = 0; i < parameter_1_len; i++) {
6362 sprintf(cursor, "%02x", parameter_1[i]);
6367 for (i = 0; i < parameter_2_len; i++) {
6368 sprintf(cursor, "%02x", parameter_2[i]);
6373 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6374 OPENSSL_clear_free(out, out_len);
6379 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6380 const uint8_t *encrypted_premaster,
6381 size_t encrypted_premaster_len,
6382 const uint8_t *premaster,
6383 size_t premaster_len)
6385 if (encrypted_premaster_len < 8) {
6386 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6390 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6391 return nss_keylog_int("RSA",
6393 encrypted_premaster,
6399 int ssl_log_secret(SSL_CONNECTION *sc,
6401 const uint8_t *secret,
6404 return nss_keylog_int(label,
6406 sc->s3.client_random,
6412 #define SSLV2_CIPHER_LEN 3
6414 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6418 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6420 if (PACKET_remaining(cipher_suites) == 0) {
6421 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6425 if (PACKET_remaining(cipher_suites) % n != 0) {
6426 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6430 OPENSSL_free(s->s3.tmp.ciphers_raw);
6431 s->s3.tmp.ciphers_raw = NULL;
6432 s->s3.tmp.ciphers_rawlen = 0;
6435 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6436 PACKET sslv2ciphers = *cipher_suites;
6437 unsigned int leadbyte;
6441 * We store the raw ciphers list in SSLv3+ format so we need to do some
6442 * preprocessing to convert the list first. If there are any SSLv2 only
6443 * ciphersuites with a non-zero leading byte then we are going to
6444 * slightly over allocate because we won't store those. But that isn't a
6447 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6448 s->s3.tmp.ciphers_raw = raw;
6450 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6453 for (s->s3.tmp.ciphers_rawlen = 0;
6454 PACKET_remaining(&sslv2ciphers) > 0;
6455 raw += TLS_CIPHER_LEN) {
6456 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6458 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6461 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6462 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6463 OPENSSL_free(s->s3.tmp.ciphers_raw);
6464 s->s3.tmp.ciphers_raw = NULL;
6465 s->s3.tmp.ciphers_rawlen = 0;
6469 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6471 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6472 &s->s3.tmp.ciphers_rawlen)) {
6473 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6479 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6480 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6481 STACK_OF(SSL_CIPHER) **scsvs)
6484 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6489 if (!PACKET_buf_init(&pkt, bytes, len))
6491 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6494 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6495 STACK_OF(SSL_CIPHER) **skp,
6496 STACK_OF(SSL_CIPHER) **scsvs_out,
6497 int sslv2format, int fatal)
6499 const SSL_CIPHER *c;
6500 STACK_OF(SSL_CIPHER) *sk = NULL;
6501 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6503 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6504 unsigned char cipher[SSLV2_CIPHER_LEN];
6506 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6508 if (PACKET_remaining(cipher_suites) == 0) {
6510 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6512 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6516 if (PACKET_remaining(cipher_suites) % n != 0) {
6518 SSLfatal(s, SSL_AD_DECODE_ERROR,
6519 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6521 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6525 sk = sk_SSL_CIPHER_new_null();
6526 scsvs = sk_SSL_CIPHER_new_null();
6527 if (sk == NULL || scsvs == NULL) {
6529 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6531 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6535 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6537 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6538 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6539 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6541 if (sslv2format && cipher[0] != '\0')
6544 /* For SSLv2-compat, ignore leading 0-byte. */
6545 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6547 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6548 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6550 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6552 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6557 if (PACKET_remaining(cipher_suites) > 0) {
6559 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6561 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6568 sk_SSL_CIPHER_free(sk);
6569 if (scsvs_out != NULL)
6572 sk_SSL_CIPHER_free(scsvs);
6575 sk_SSL_CIPHER_free(sk);
6576 sk_SSL_CIPHER_free(scsvs);
6580 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6582 ctx->max_early_data = max_early_data;
6587 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6589 return ctx->max_early_data;
6592 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6594 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6599 sc->max_early_data = max_early_data;
6604 uint32_t SSL_get_max_early_data(const SSL *s)
6606 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6611 return sc->max_early_data;
6614 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6616 ctx->recv_max_early_data = recv_max_early_data;
6621 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6623 return ctx->recv_max_early_data;
6626 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6628 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6633 sc->recv_max_early_data = recv_max_early_data;
6638 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6640 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6645 return sc->recv_max_early_data;
6648 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6650 /* Return any active Max Fragment Len extension */
6651 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6652 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6654 /* return current SSL connection setting */
6655 return sc->max_send_fragment;
6658 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6660 /* Return a value regarding an active Max Fragment Len extension */
6661 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6662 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6663 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6665 /* else limit |split_send_fragment| to current |max_send_fragment| */
6666 if (sc->split_send_fragment > sc->max_send_fragment)
6667 return sc->max_send_fragment;
6669 /* return current SSL connection setting */
6670 return sc->split_send_fragment;
6673 int SSL_stateless(SSL *s)
6676 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6678 /* TODO(QUIC): This will need further work. */
6682 /* Ensure there is no state left over from a previous invocation */
6688 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6689 ret = SSL_accept(s);
6690 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6692 if (ret > 0 && sc->ext.cookieok)
6695 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6701 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6703 ctx->pha_enabled = val;
6706 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6708 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6713 sc->pha_enabled = val;
6716 int SSL_verify_client_post_handshake(SSL *ssl)
6718 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6723 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6724 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6728 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6732 if (!SSL_is_init_finished(ssl)) {
6733 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6737 switch (sc->post_handshake_auth) {
6739 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6742 case SSL_PHA_EXT_SENT:
6743 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6745 case SSL_PHA_EXT_RECEIVED:
6747 case SSL_PHA_REQUEST_PENDING:
6748 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6750 case SSL_PHA_REQUESTED:
6751 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6755 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6757 /* checks verify_mode and algorithm_auth */
6758 if (!send_certificate_request(sc)) {
6759 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6760 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6764 ossl_statem_set_in_init(sc, 1);
6768 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6769 SSL_CTX_generate_session_ticket_fn gen_cb,
6770 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6773 ctx->generate_ticket_cb = gen_cb;
6774 ctx->decrypt_ticket_cb = dec_cb;
6775 ctx->ticket_cb_data = arg;
6779 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6780 SSL_allow_early_data_cb_fn cb,
6783 ctx->allow_early_data_cb = cb;
6784 ctx->allow_early_data_cb_data = arg;
6787 void SSL_set_allow_early_data_cb(SSL *s,
6788 SSL_allow_early_data_cb_fn cb,
6791 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6796 sc->allow_early_data_cb = cb;
6797 sc->allow_early_data_cb_data = arg;
6800 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6802 const char *properties)
6804 const EVP_CIPHER *ciph;
6806 ciph = tls_get_cipher_from_engine(nid);
6811 * If there is no engine cipher then we do an explicit fetch. This may fail
6812 * and that could be ok
6815 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6821 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6823 /* Don't up-ref an implicit EVP_CIPHER */
6824 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6828 * The cipher was explicitly fetched and therefore it is safe to cast
6831 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6834 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6839 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6841 * The cipher was explicitly fetched and therefore it is safe to cast
6844 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6848 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6850 const char *properties)
6854 md = tls_get_digest_from_engine(nid);
6858 /* Otherwise we do an explicit fetch */
6860 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6865 int ssl_evp_md_up_ref(const EVP_MD *md)
6867 /* Don't up-ref an implicit EVP_MD */
6868 if (EVP_MD_get0_provider(md) == NULL)
6872 * The digest was explicitly fetched and therefore it is safe to cast
6875 return EVP_MD_up_ref((EVP_MD *)md);
6878 void ssl_evp_md_free(const EVP_MD *md)
6883 if (EVP_MD_get0_provider(md) != NULL) {
6885 * The digest was explicitly fetched and therefore it is safe to cast
6888 EVP_MD_free((EVP_MD *)md);
6892 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6894 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6899 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6900 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6901 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6904 EVP_PKEY_free(sc->cert->dh_tmp);
6905 sc->cert->dh_tmp = dhpkey;
6909 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6911 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6912 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6913 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6916 EVP_PKEY_free(ctx->cert->dh_tmp);
6917 ctx->cert->dh_tmp = dhpkey;