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);
659 BIO_free(sc->rrlnext);
663 * TODO(RECLAYER): The record method should probably initialy come from the
664 * SSL_METHOD, and potentially be updated later. For now though we just
667 if (!ssl_set_new_record_layer(sc,
668 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
669 OSSL_RECORD_DIRECTION_READ,
670 OSSL_RECORD_PROTECTION_LEVEL_NONE,
671 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
672 NID_undef, NULL, NULL)) {
673 /* SSLfatal already called */
680 #ifndef OPENSSL_NO_DEPRECATED_3_0
681 /** Used to change an SSL_CTXs default SSL method type */
682 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
684 STACK_OF(SSL_CIPHER) *sk;
688 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
689 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
692 sk = ssl_create_cipher_list(ctx,
693 ctx->tls13_ciphersuites,
695 &(ctx->cipher_list_by_id),
696 OSSL_default_cipher_list(), ctx->cert);
697 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
698 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
705 SSL *SSL_new(SSL_CTX *ctx)
708 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
711 if (ctx->method == NULL) {
712 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
715 return ctx->method->ssl_new(ctx);
718 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
723 ssl->lock = CRYPTO_THREAD_lock_new();
724 if (ssl->lock == NULL)
730 ssl->method = ctx->method;
732 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
738 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
743 s = OPENSSL_zalloc(sizeof(*s));
748 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
754 #ifndef OPENSSL_NO_QUIC
755 /* set the parent (user visible) ssl to self */
759 RECORD_LAYER_init(&s->rlayer, s);
761 s->options = ctx->options;
762 s->dane.flags = ctx->dane.flags;
763 s->min_proto_version = ctx->min_proto_version;
764 s->max_proto_version = ctx->max_proto_version;
766 s->max_cert_list = ctx->max_cert_list;
767 s->max_early_data = ctx->max_early_data;
768 s->recv_max_early_data = ctx->recv_max_early_data;
769 s->num_tickets = ctx->num_tickets;
770 s->pha_enabled = ctx->pha_enabled;
772 /* Shallow copy of the ciphersuites stack */
773 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
774 if (s->tls13_ciphersuites == NULL)
778 * Earlier library versions used to copy the pointer to the CERT, not
779 * its contents; only when setting new parameters for the per-SSL
780 * copy, ssl_cert_new would be called (and the direct reference to
781 * the per-SSL_CTX settings would be lost, but those still were
782 * indirectly accessed for various purposes, and for that reason they
783 * used to be known as s->ctx->default_cert). Now we don't look at the
784 * SSL_CTX's CERT after having duplicated it once.
786 s->cert = ssl_cert_dup(ctx->cert);
790 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
791 s->msg_callback = ctx->msg_callback;
792 s->msg_callback_arg = ctx->msg_callback_arg;
793 s->verify_mode = ctx->verify_mode;
794 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
795 s->record_padding_cb = ctx->record_padding_cb;
796 s->record_padding_arg = ctx->record_padding_arg;
797 s->block_padding = ctx->block_padding;
798 s->sid_ctx_length = ctx->sid_ctx_length;
799 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
801 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
802 s->verify_callback = ctx->default_verify_callback;
803 s->generate_session_id = ctx->generate_session_id;
805 s->param = X509_VERIFY_PARAM_new();
806 if (s->param == NULL)
808 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
809 s->quiet_shutdown = ctx->quiet_shutdown;
811 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
812 s->max_send_fragment = ctx->max_send_fragment;
813 s->split_send_fragment = ctx->split_send_fragment;
814 s->max_pipelines = ctx->max_pipelines;
815 s->default_read_buf_len = ctx->default_read_buf_len;
818 s->ext.debug_arg = NULL;
819 s->ext.ticket_expected = 0;
820 s->ext.status_type = ctx->ext.status_type;
821 s->ext.status_expected = 0;
822 s->ext.ocsp.ids = NULL;
823 s->ext.ocsp.exts = NULL;
824 s->ext.ocsp.resp = NULL;
825 s->ext.ocsp.resp_len = 0;
827 s->session_ctx = ctx;
828 if (ctx->ext.ecpointformats) {
829 s->ext.ecpointformats =
830 OPENSSL_memdup(ctx->ext.ecpointformats,
831 ctx->ext.ecpointformats_len);
832 if (!s->ext.ecpointformats) {
833 s->ext.ecpointformats_len = 0;
836 s->ext.ecpointformats_len =
837 ctx->ext.ecpointformats_len;
839 if (ctx->ext.supportedgroups) {
840 s->ext.supportedgroups =
841 OPENSSL_memdup(ctx->ext.supportedgroups,
842 ctx->ext.supportedgroups_len
843 * sizeof(*ctx->ext.supportedgroups));
844 if (!s->ext.supportedgroups) {
845 s->ext.supportedgroups_len = 0;
848 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
851 #ifndef OPENSSL_NO_NEXTPROTONEG
855 if (ctx->ext.alpn != NULL) {
856 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
857 if (s->ext.alpn == NULL) {
861 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
862 s->ext.alpn_len = ctx->ext.alpn_len;
865 s->verified_chain = NULL;
866 s->verify_result = X509_V_OK;
868 s->default_passwd_callback = ctx->default_passwd_callback;
869 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
871 s->key_update = SSL_KEY_UPDATE_NONE;
873 s->allow_early_data_cb = ctx->allow_early_data_cb;
874 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
876 if (!ssl->method->ssl_init(ssl))
879 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
884 #ifndef OPENSSL_NO_PSK
885 s->psk_client_callback = ctx->psk_client_callback;
886 s->psk_server_callback = ctx->psk_server_callback;
888 s->psk_find_session_cb = ctx->psk_find_session_cb;
889 s->psk_use_session_cb = ctx->psk_use_session_cb;
891 s->async_cb = ctx->async_cb;
892 s->async_cb_arg = ctx->async_cb_arg;
896 #ifndef OPENSSL_NO_CT
897 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
898 ctx->ct_validation_callback_arg))
905 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
909 int SSL_is_dtls(const SSL *s)
911 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
916 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
919 int SSL_up_ref(SSL *s)
923 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
926 REF_PRINT_COUNT("SSL", s);
927 REF_ASSERT_ISNT(i < 2);
928 return ((i > 1) ? 1 : 0);
931 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
932 unsigned int sid_ctx_len)
934 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
935 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
938 ctx->sid_ctx_length = sid_ctx_len;
939 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
944 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
945 unsigned int sid_ctx_len)
947 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
952 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
953 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
956 sc->sid_ctx_length = sid_ctx_len;
957 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
962 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
964 if (!CRYPTO_THREAD_write_lock(ctx->lock))
966 ctx->generate_session_id = cb;
967 CRYPTO_THREAD_unlock(ctx->lock);
971 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
973 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
975 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
977 sc->generate_session_id = cb;
978 CRYPTO_THREAD_unlock(ssl->lock);
982 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
986 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
987 * we can "construct" a session to give us the desired check - i.e. to
988 * find if there's a session in the hash table that would conflict with
989 * any new session built out of this id/id_len and the ssl_version in use
993 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
995 if (sc == NULL || id_len > sizeof(r.session_id))
998 r.ssl_version = sc->version;
999 r.session_id_length = id_len;
1000 memcpy(r.session_id, id, id_len);
1002 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1004 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1005 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1009 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1011 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1014 int SSL_set_purpose(SSL *s, int purpose)
1016 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1021 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1024 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1026 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1029 int SSL_set_trust(SSL *s, int trust)
1031 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1036 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1039 int SSL_set1_host(SSL *s, const char *hostname)
1041 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1046 /* If a hostname is provided and parses as an IP address,
1047 * treat it as such. */
1048 if (hostname != NULL
1049 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1052 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1055 int SSL_add1_host(SSL *s, const char *hostname)
1057 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1062 /* If a hostname is provided and parses as an IP address,
1063 * treat it as such. */
1066 ASN1_OCTET_STRING *ip;
1069 ip = a2i_IPADDRESS(hostname);
1071 /* We didn't want it; only to check if it *is* an IP address */
1072 ASN1_OCTET_STRING_free(ip);
1074 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1077 OPENSSL_free(old_ip);
1078 /* There can be only one IP address */
1082 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1086 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1089 void SSL_set_hostflags(SSL *s, unsigned int flags)
1091 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1096 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1099 const char *SSL_get0_peername(SSL *s)
1101 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1106 return X509_VERIFY_PARAM_get0_peername(sc->param);
1109 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1111 return dane_ctx_enable(&ctx->dane);
1114 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1116 unsigned long orig = ctx->dane.flags;
1118 ctx->dane.flags |= flags;
1122 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1124 unsigned long orig = ctx->dane.flags;
1126 ctx->dane.flags &= ~flags;
1130 int SSL_dane_enable(SSL *s, const char *basedomain)
1133 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1139 if (s->ctx->dane.mdmax == 0) {
1140 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1143 if (dane->trecs != NULL) {
1144 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1149 * Default SNI name. This rejects empty names, while set1_host below
1150 * accepts them and disables host name checks. To avoid side-effects with
1151 * invalid input, set the SNI name first.
1153 if (sc->ext.hostname == NULL) {
1154 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1155 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1160 /* Primary RFC6125 reference identifier */
1161 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1162 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1168 dane->dctx = &s->ctx->dane;
1169 dane->trecs = sk_danetls_record_new_null();
1171 if (dane->trecs == NULL) {
1172 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1178 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1181 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1186 orig = sc->dane.flags;
1188 sc->dane.flags |= flags;
1192 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1195 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1200 orig = sc->dane.flags;
1202 sc->dane.flags &= ~flags;
1206 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1209 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1216 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1220 *mcert = dane->mcert;
1222 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1227 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1228 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1231 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1238 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1242 *usage = dane->mtlsa->usage;
1244 *selector = dane->mtlsa->selector;
1246 *mtype = dane->mtlsa->mtype;
1248 *data = dane->mtlsa->data;
1250 *dlen = dane->mtlsa->dlen;
1255 SSL_DANE *SSL_get0_dane(SSL *s)
1257 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1265 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1266 uint8_t mtype, const unsigned char *data, size_t dlen)
1268 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1273 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1276 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1279 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1282 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1284 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1287 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1289 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1294 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1297 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1302 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1304 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1312 void SSL_certs_clear(SSL *s)
1314 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1319 ssl_cert_clear_certs(sc->cert);
1322 void SSL_free(SSL *s)
1328 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1329 REF_PRINT_COUNT("SSL", s);
1332 REF_ASSERT_ISNT(i < 0);
1334 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1336 if (s->method != NULL)
1337 s->method->ssl_free(s);
1339 SSL_CTX_free(s->ctx);
1340 CRYPTO_THREAD_lock_free(s->lock);
1345 void ossl_ssl_connection_free(SSL *ssl)
1349 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1353 if (s->rrlmethod != NULL)
1354 s->rrlmethod->free(s->rrl); /* Ignore return value */
1355 BIO_free(s->rrlnext);
1357 X509_VERIFY_PARAM_free(s->param);
1358 dane_final(&s->dane);
1360 RECORD_LAYER_release(&s->rlayer);
1362 /* Ignore return value */
1363 ssl_free_wbio_buffer(s);
1365 BIO_free_all(s->wbio);
1367 BIO_free_all(s->rbio);
1370 BUF_MEM_free(s->init_buf);
1372 /* add extra stuff */
1373 sk_SSL_CIPHER_free(s->cipher_list);
1374 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1375 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1376 sk_SSL_CIPHER_free(s->peer_ciphers);
1378 /* Make the next call work :-) */
1379 if (s->session != NULL) {
1380 ssl_clear_bad_session(s);
1381 SSL_SESSION_free(s->session);
1383 SSL_SESSION_free(s->psksession);
1384 OPENSSL_free(s->psksession_id);
1388 ssl_cert_free(s->cert);
1389 OPENSSL_free(s->shared_sigalgs);
1390 /* Free up if allocated */
1392 OPENSSL_free(s->ext.hostname);
1393 SSL_CTX_free(s->session_ctx);
1394 OPENSSL_free(s->ext.ecpointformats);
1395 OPENSSL_free(s->ext.peer_ecpointformats);
1396 OPENSSL_free(s->ext.supportedgroups);
1397 OPENSSL_free(s->ext.peer_supportedgroups);
1398 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1399 #ifndef OPENSSL_NO_OCSP
1400 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1402 #ifndef OPENSSL_NO_CT
1403 SCT_LIST_free(s->scts);
1404 OPENSSL_free(s->ext.scts);
1406 OPENSSL_free(s->ext.ocsp.resp);
1407 OPENSSL_free(s->ext.alpn);
1408 OPENSSL_free(s->ext.tls13_cookie);
1409 if (s->clienthello != NULL)
1410 OPENSSL_free(s->clienthello->pre_proc_exts);
1411 OPENSSL_free(s->clienthello);
1412 OPENSSL_free(s->pha_context);
1413 EVP_MD_CTX_free(s->pha_dgst);
1415 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1416 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1418 OSSL_STACK_OF_X509_free(s->verified_chain);
1420 if (ssl->method != NULL)
1421 ssl->method->ssl_deinit(ssl);
1423 ASYNC_WAIT_CTX_free(s->waitctx);
1425 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1426 OPENSSL_free(s->ext.npn);
1429 #ifndef OPENSSL_NO_SRTP
1430 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1434 void SSL_set0_rbio(SSL *s, BIO *rbio)
1436 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1441 BIO_free_all(sc->rbio);
1443 sc->rrlmethod->set1_bio(sc->rrl, sc->rbio);
1446 void SSL_set0_wbio(SSL *s, BIO *wbio)
1448 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1454 * If the output buffering BIO is still in place, remove it
1456 if (sc->bbio != NULL)
1457 sc->wbio = BIO_pop(sc->wbio);
1459 BIO_free_all(sc->wbio);
1462 /* Re-attach |bbio| to the new |wbio|. */
1463 if (sc->bbio != NULL)
1464 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1467 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1470 * For historical reasons, this function has many different cases in
1471 * ownership handling.
1474 /* If nothing has changed, do nothing */
1475 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1479 * If the two arguments are equal then one fewer reference is granted by the
1480 * caller than we want to take
1482 if (rbio != NULL && rbio == wbio)
1486 * If only the wbio is changed only adopt one reference.
1488 if (rbio == SSL_get_rbio(s)) {
1489 SSL_set0_wbio(s, wbio);
1493 * There is an asymmetry here for historical reasons. If only the rbio is
1494 * changed AND the rbio and wbio were originally different, then we only
1495 * adopt one reference.
1497 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1498 SSL_set0_rbio(s, rbio);
1502 /* Otherwise, adopt both references. */
1503 SSL_set0_rbio(s, rbio);
1504 SSL_set0_wbio(s, wbio);
1507 BIO *SSL_get_rbio(const SSL *s)
1509 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1517 BIO *SSL_get_wbio(const SSL *s)
1519 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1524 if (sc->bbio != NULL) {
1526 * If |bbio| is active, the true caller-configured BIO is its
1529 return BIO_next(sc->bbio);
1534 int SSL_get_fd(const SSL *s)
1536 return SSL_get_rfd(s);
1539 int SSL_get_rfd(const SSL *s)
1544 b = SSL_get_rbio(s);
1545 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1547 BIO_get_fd(r, &ret);
1551 int SSL_get_wfd(const SSL *s)
1556 b = SSL_get_wbio(s);
1557 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1559 BIO_get_fd(r, &ret);
1563 #ifndef OPENSSL_NO_SOCK
1564 int SSL_set_fd(SSL *s, int fd)
1569 bio = BIO_new(BIO_s_socket());
1572 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1575 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1576 SSL_set_bio(s, bio, bio);
1577 #ifndef OPENSSL_NO_KTLS
1579 * The new socket is created successfully regardless of ktls_enable.
1580 * ktls_enable doesn't change any functionality of the socket, except
1581 * changing the setsockopt to enable the processing of ktls_start.
1582 * Thus, it is not a problem to call it for non-TLS sockets.
1585 #endif /* OPENSSL_NO_KTLS */
1591 int SSL_set_wfd(SSL *s, int fd)
1593 BIO *rbio = SSL_get_rbio(s);
1595 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1596 || (int)BIO_get_fd(rbio, NULL) != fd) {
1597 BIO *bio = BIO_new(BIO_s_socket());
1600 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1603 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1604 SSL_set0_wbio(s, bio);
1605 #ifndef OPENSSL_NO_KTLS
1607 * The new socket is created successfully regardless of ktls_enable.
1608 * ktls_enable doesn't change any functionality of the socket, except
1609 * changing the setsockopt to enable the processing of ktls_start.
1610 * Thus, it is not a problem to call it for non-TLS sockets.
1613 #endif /* OPENSSL_NO_KTLS */
1616 SSL_set0_wbio(s, rbio);
1621 int SSL_set_rfd(SSL *s, int fd)
1623 BIO *wbio = SSL_get_wbio(s);
1625 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1626 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1627 BIO *bio = BIO_new(BIO_s_socket());
1630 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1633 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1634 SSL_set0_rbio(s, bio);
1637 SSL_set0_rbio(s, wbio);
1644 /* return length of latest Finished message we sent, copy to 'buf' */
1645 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1648 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1653 ret = sc->s3.tmp.finish_md_len;
1656 memcpy(buf, sc->s3.tmp.finish_md, count);
1660 /* return length of latest Finished message we expected, copy to 'buf' */
1661 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1664 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1669 ret = sc->s3.tmp.peer_finish_md_len;
1672 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1676 int SSL_get_verify_mode(const SSL *s)
1678 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1683 return sc->verify_mode;
1686 int SSL_get_verify_depth(const SSL *s)
1688 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1693 return X509_VERIFY_PARAM_get_depth(sc->param);
1696 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1697 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1702 return sc->verify_callback;
1705 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1707 return ctx->verify_mode;
1710 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1712 return X509_VERIFY_PARAM_get_depth(ctx->param);
1715 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1716 return ctx->default_verify_callback;
1719 void SSL_set_verify(SSL *s, int mode,
1720 int (*callback) (int ok, X509_STORE_CTX *ctx))
1722 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1727 sc->verify_mode = mode;
1728 if (callback != NULL)
1729 sc->verify_callback = callback;
1732 void SSL_set_verify_depth(SSL *s, int depth)
1734 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1739 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1742 void SSL_set_read_ahead(SSL *s, int yes)
1744 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1749 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1752 int SSL_get_read_ahead(const SSL *s)
1754 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1759 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1762 int SSL_pending(const SSL *s)
1764 size_t pending = s->method->ssl_pending(s);
1767 * SSL_pending cannot work properly if read-ahead is enabled
1768 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1769 * impossible to fix since SSL_pending cannot report errors that may be
1770 * observed while scanning the new data. (Note that SSL_pending() is
1771 * often used as a boolean value, so we'd better not return -1.)
1773 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1774 * we just return INT_MAX.
1776 return pending < INT_MAX ? (int)pending : INT_MAX;
1779 int SSL_has_pending(const SSL *s)
1782 * Similar to SSL_pending() but returns a 1 to indicate that we have
1783 * processed or unprocessed data available or 0 otherwise (as opposed to the
1784 * number of bytes available). Unlike SSL_pending() this will take into
1785 * account read_ahead data. A 1 return simply indicates that we have data.
1786 * That data may not result in any application data, or we may fail to parse
1787 * the records for some reason.
1789 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1791 /* Check buffered app data if any first */
1792 if (SSL_CONNECTION_IS_DTLS(sc)) {
1796 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1797 while ((item = pqueue_next(&iter)) != NULL) {
1799 if (rdata->length > 0)
1804 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1807 return RECORD_LAYER_read_pending(&sc->rlayer);
1810 X509 *SSL_get1_peer_certificate(const SSL *s)
1812 X509 *r = SSL_get0_peer_certificate(s);
1820 X509 *SSL_get0_peer_certificate(const SSL *s)
1822 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1827 if (sc->session == NULL)
1830 return sc->session->peer;
1833 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1836 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1841 if (sc->session == NULL)
1844 r = sc->session->peer_chain;
1847 * If we are a client, cert_chain includes the peer's own certificate; if
1848 * we are a server, it does not.
1855 * Now in theory, since the calling process own 't' it should be safe to
1856 * modify. We need to be able to read f without being hassled
1858 int SSL_copy_session_id(SSL *t, const SSL *f)
1861 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1862 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1863 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1865 if (tsc == NULL || fsc == NULL)
1868 /* Do we need to do SSL locking? */
1869 if (!SSL_set_session(t, SSL_get_session(f))) {
1874 * what if we are setup for one protocol version but want to talk another
1876 if (t->method != f->method) {
1877 t->method->ssl_deinit(t);
1878 t->method = f->method;
1879 if (t->method->ssl_init(t) == 0)
1883 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1884 ssl_cert_free(tsc->cert);
1885 tsc->cert = fsc->cert;
1886 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1893 /* Fix this so it checks all the valid key/cert options */
1894 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1896 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1897 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1900 if (ctx->cert->key->privatekey == NULL) {
1901 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1904 return X509_check_private_key
1905 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1908 /* Fix this function so that it takes an optional type parameter */
1909 int SSL_check_private_key(const SSL *ssl)
1911 const SSL_CONNECTION *sc;
1913 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1914 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1917 if (sc->cert->key->x509 == NULL) {
1918 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1921 if (sc->cert->key->privatekey == NULL) {
1922 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1925 return X509_check_private_key(sc->cert->key->x509,
1926 sc->cert->key->privatekey);
1929 int SSL_waiting_for_async(SSL *s)
1931 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1942 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1944 ASYNC_WAIT_CTX *ctx;
1945 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1950 if ((ctx = sc->waitctx) == NULL)
1952 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1955 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1956 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1958 ASYNC_WAIT_CTX *ctx;
1959 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1964 if ((ctx = sc->waitctx) == NULL)
1966 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1970 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1972 ctx->async_cb = callback;
1976 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1978 ctx->async_cb_arg = arg;
1982 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1984 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1989 sc->async_cb = callback;
1993 int SSL_set_async_callback_arg(SSL *s, void *arg)
1995 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2000 sc->async_cb_arg = arg;
2004 int SSL_get_async_status(SSL *s, int *status)
2006 ASYNC_WAIT_CTX *ctx;
2007 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2012 if ((ctx = sc->waitctx) == NULL)
2014 *status = ASYNC_WAIT_CTX_get_status(ctx);
2018 int SSL_accept(SSL *s)
2020 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2025 if (sc->handshake_func == NULL) {
2026 /* Not properly initialized yet */
2027 SSL_set_accept_state(s);
2030 return SSL_do_handshake(s);
2033 int SSL_connect(SSL *s)
2035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2040 if (sc->handshake_func == NULL) {
2041 /* Not properly initialized yet */
2042 SSL_set_connect_state(s);
2045 return SSL_do_handshake(s);
2048 long SSL_get_default_timeout(const SSL *s)
2050 return s->method->get_timeout();
2053 static int ssl_async_wait_ctx_cb(void *arg)
2055 SSL *s = (SSL *)arg;
2056 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2061 return sc->async_cb(s, sc->async_cb_arg);
2064 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2065 int (*func) (void *))
2068 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2073 if (sc->waitctx == NULL) {
2074 sc->waitctx = ASYNC_WAIT_CTX_new();
2075 if (sc->waitctx == NULL)
2077 if (sc->async_cb != NULL
2078 && !ASYNC_WAIT_CTX_set_callback
2079 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2083 sc->rwstate = SSL_NOTHING;
2084 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2085 sizeof(struct ssl_async_args))) {
2087 sc->rwstate = SSL_NOTHING;
2088 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2091 sc->rwstate = SSL_ASYNC_PAUSED;
2094 sc->rwstate = SSL_ASYNC_NO_JOBS;
2100 sc->rwstate = SSL_NOTHING;
2101 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2102 /* Shouldn't happen */
2107 static int ssl_io_intern(void *vargs)
2109 struct ssl_async_args *args;
2115 args = (struct ssl_async_args *)vargs;
2119 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2122 switch (args->type) {
2124 return args->f.func_read(s, buf, num, &sc->asyncrw);
2126 return args->f.func_write(s, buf, num, &sc->asyncrw);
2128 return args->f.func_other(s);
2133 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2135 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2140 if (sc->handshake_func == NULL) {
2141 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2145 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2146 sc->rwstate = SSL_NOTHING;
2150 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2151 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2152 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2156 * If we are a client and haven't received the ServerHello etc then we
2159 ossl_statem_check_finish_init(sc, 0);
2161 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2162 struct ssl_async_args args;
2168 args.type = READFUNC;
2169 args.f.func_read = s->method->ssl_read;
2171 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2172 *readbytes = sc->asyncrw;
2175 return s->method->ssl_read(s, buf, num, readbytes);
2179 int SSL_read(SSL *s, void *buf, int num)
2185 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2189 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2192 * The cast is safe here because ret should be <= INT_MAX because num is
2196 ret = (int)readbytes;
2201 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2203 int ret = ssl_read_internal(s, buf, num, readbytes);
2210 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2213 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2215 /* TODO(QUIC): This will need special handling for QUIC */
2220 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2221 return SSL_READ_EARLY_DATA_ERROR;
2224 switch (sc->early_data_state) {
2225 case SSL_EARLY_DATA_NONE:
2226 if (!SSL_in_before(s)) {
2227 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2228 return SSL_READ_EARLY_DATA_ERROR;
2232 case SSL_EARLY_DATA_ACCEPT_RETRY:
2233 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2234 ret = SSL_accept(s);
2237 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2238 return SSL_READ_EARLY_DATA_ERROR;
2242 case SSL_EARLY_DATA_READ_RETRY:
2243 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2244 sc->early_data_state = SSL_EARLY_DATA_READING;
2245 ret = SSL_read_ex(s, buf, num, readbytes);
2247 * State machine will update early_data_state to
2248 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2251 if (ret > 0 || (ret <= 0 && sc->early_data_state
2252 != SSL_EARLY_DATA_FINISHED_READING)) {
2253 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2254 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2255 : SSL_READ_EARLY_DATA_ERROR;
2258 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2261 return SSL_READ_EARLY_DATA_FINISH;
2264 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2265 return SSL_READ_EARLY_DATA_ERROR;
2269 int SSL_get_early_data_status(const SSL *s)
2271 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2273 /* TODO(QUIC): This will need special handling for QUIC */
2277 return sc->ext.early_data;
2280 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2282 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2287 if (sc->handshake_func == NULL) {
2288 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2292 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2295 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2296 struct ssl_async_args args;
2302 args.type = READFUNC;
2303 args.f.func_read = s->method->ssl_peek;
2305 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2306 *readbytes = sc->asyncrw;
2309 return s->method->ssl_peek(s, buf, num, readbytes);
2313 int SSL_peek(SSL *s, void *buf, int num)
2319 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2323 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2326 * The cast is safe here because ret should be <= INT_MAX because num is
2330 ret = (int)readbytes;
2336 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2338 int ret = ssl_peek_internal(s, buf, num, readbytes);
2345 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2347 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2352 if (sc->handshake_func == NULL) {
2353 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2357 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2358 sc->rwstate = SSL_NOTHING;
2359 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2363 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2364 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2365 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2366 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2369 /* If we are a client and haven't sent the Finished we better do that */
2370 ossl_statem_check_finish_init(sc, 1);
2372 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2374 struct ssl_async_args args;
2377 args.buf = (void *)buf;
2379 args.type = WRITEFUNC;
2380 args.f.func_write = s->method->ssl_write;
2382 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2383 *written = sc->asyncrw;
2386 return s->method->ssl_write(s, buf, num, written);
2390 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2393 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2398 if (sc->handshake_func == NULL) {
2399 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2403 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2404 sc->rwstate = SSL_NOTHING;
2405 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2409 if (!BIO_get_ktls_send(sc->wbio)) {
2410 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2414 /* If we have an alert to send, lets send it */
2415 if (sc->s3.alert_dispatch) {
2416 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2418 /* SSLfatal() already called if appropriate */
2421 /* if it went, fall through and send more stuff */
2424 sc->rwstate = SSL_WRITING;
2425 if (BIO_flush(sc->wbio) <= 0) {
2426 if (!BIO_should_retry(sc->wbio)) {
2427 sc->rwstate = SSL_NOTHING;
2430 set_sys_error(EAGAIN);
2436 #ifdef OPENSSL_NO_KTLS
2437 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2438 "can't call ktls_sendfile(), ktls disabled");
2441 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2443 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2444 if ((get_last_sys_error() == EAGAIN) ||
2445 (get_last_sys_error() == EINTR) ||
2446 (get_last_sys_error() == EBUSY))
2447 BIO_set_retry_write(sc->wbio);
2450 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2453 sc->rwstate = SSL_NOTHING;
2458 int SSL_write(SSL *s, const void *buf, int num)
2464 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2468 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2471 * The cast is safe here because ret should be <= INT_MAX because num is
2480 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2482 int ret = ssl_write_internal(s, buf, num, written);
2489 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2491 int ret, early_data_state;
2493 uint32_t partialwrite;
2494 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2496 /* TODO(QUIC): This will need special handling for QUIC */
2500 switch (sc->early_data_state) {
2501 case SSL_EARLY_DATA_NONE:
2503 || !SSL_in_before(s)
2504 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2505 && (sc->psk_use_session_cb == NULL))) {
2506 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2511 case SSL_EARLY_DATA_CONNECT_RETRY:
2512 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2513 ret = SSL_connect(s);
2516 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2521 case SSL_EARLY_DATA_WRITE_RETRY:
2522 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2524 * We disable partial write for early data because we don't keep track
2525 * of how many bytes we've written between the SSL_write_ex() call and
2526 * the flush if the flush needs to be retried)
2528 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2529 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2530 ret = SSL_write_ex(s, buf, num, &writtmp);
2531 sc->mode |= partialwrite;
2533 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2536 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2539 case SSL_EARLY_DATA_WRITE_FLUSH:
2540 /* The buffering BIO is still in place so we need to flush it */
2541 if (statem_flush(sc) != 1)
2544 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2547 case SSL_EARLY_DATA_FINISHED_READING:
2548 case SSL_EARLY_DATA_READ_RETRY:
2549 early_data_state = sc->early_data_state;
2550 /* We are a server writing to an unauthenticated client */
2551 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2552 ret = SSL_write_ex(s, buf, num, written);
2553 /* The buffering BIO is still in place */
2555 (void)BIO_flush(sc->wbio);
2556 sc->early_data_state = early_data_state;
2560 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2565 int SSL_shutdown(SSL *s)
2568 * Note that this function behaves differently from what one might
2569 * expect. Return values are 0 for no success (yet), 1 for success; but
2570 * calling it once is usually not enough, even if blocking I/O is used
2571 * (see ssl3_shutdown).
2573 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2578 if (sc->handshake_func == NULL) {
2579 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2583 if (!SSL_in_init(s)) {
2584 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2585 struct ssl_async_args args;
2587 memset(&args, 0, sizeof(args));
2589 args.type = OTHERFUNC;
2590 args.f.func_other = s->method->ssl_shutdown;
2592 return ssl_start_async_job(s, &args, ssl_io_intern);
2594 return s->method->ssl_shutdown(s);
2597 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2602 int SSL_key_update(SSL *s, int updatetype)
2604 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2609 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2610 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2614 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2615 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2616 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2620 if (!SSL_is_init_finished(s)) {
2621 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2625 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2626 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2630 ossl_statem_set_in_init(sc, 1);
2631 sc->key_update = updatetype;
2635 int SSL_get_key_update_type(const SSL *s)
2637 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2642 return sc->key_update;
2646 * Can we accept a renegotiation request? If yes, set the flag and
2647 * return 1 if yes. If not, raise error and return 0.
2649 static int can_renegotiate(const SSL_CONNECTION *sc)
2651 if (SSL_CONNECTION_IS_TLS13(sc)) {
2652 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2656 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2657 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2664 int SSL_renegotiate(SSL *s)
2666 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2671 if (!can_renegotiate(sc))
2674 sc->renegotiate = 1;
2675 sc->new_session = 1;
2676 return s->method->ssl_renegotiate(s);
2679 int SSL_renegotiate_abbreviated(SSL *s)
2681 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2686 if (!can_renegotiate(sc))
2689 sc->renegotiate = 1;
2690 sc->new_session = 0;
2691 return s->method->ssl_renegotiate(s);
2694 int SSL_renegotiate_pending(const SSL *s)
2696 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2702 * becomes true when negotiation is requested; false again once a
2703 * handshake has finished
2705 return (sc->renegotiate != 0);
2708 int SSL_new_session_ticket(SSL *s)
2710 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2715 /* If we are in init because we're sending tickets, okay to send more. */
2716 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2717 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2718 || !SSL_CONNECTION_IS_TLS13(sc))
2720 sc->ext.extra_tickets_expected++;
2721 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2722 ossl_statem_set_in_init(sc, 1);
2726 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2729 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2731 /* TODO(QUIC): Special handling for some ctrls will be needed */
2736 case SSL_CTRL_GET_READ_AHEAD:
2737 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2738 case SSL_CTRL_SET_READ_AHEAD:
2739 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2740 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2743 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2744 sc->msg_callback_arg = parg;
2748 return (sc->mode |= larg);
2749 case SSL_CTRL_CLEAR_MODE:
2750 return (sc->mode &= ~larg);
2751 case SSL_CTRL_GET_MAX_CERT_LIST:
2752 return (long)sc->max_cert_list;
2753 case SSL_CTRL_SET_MAX_CERT_LIST:
2756 l = (long)sc->max_cert_list;
2757 sc->max_cert_list = (size_t)larg;
2759 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2760 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2762 #ifndef OPENSSL_NO_KTLS
2763 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2765 #endif /* OPENSSL_NO_KTLS */
2766 sc->max_send_fragment = larg;
2767 if (sc->max_send_fragment < sc->split_send_fragment)
2768 sc->split_send_fragment = sc->max_send_fragment;
2770 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2771 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2773 sc->split_send_fragment = larg;
2775 case SSL_CTRL_SET_MAX_PIPELINES:
2776 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2778 sc->max_pipelines = larg;
2779 if (sc->rrlmethod->set_max_pipelines != NULL)
2780 sc->rrlmethod->set_max_pipelines(sc->rrl, (size_t)larg);
2782 case SSL_CTRL_GET_RI_SUPPORT:
2783 return sc->s3.send_connection_binding;
2784 case SSL_CTRL_SET_RETRY_VERIFY:
2785 sc->rwstate = SSL_RETRY_VERIFY;
2787 case SSL_CTRL_CERT_FLAGS:
2788 return (sc->cert->cert_flags |= larg);
2789 case SSL_CTRL_CLEAR_CERT_FLAGS:
2790 return (sc->cert->cert_flags &= ~larg);
2792 case SSL_CTRL_GET_RAW_CIPHERLIST:
2794 if (sc->s3.tmp.ciphers_raw == NULL)
2796 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2797 return (int)sc->s3.tmp.ciphers_rawlen;
2799 return TLS_CIPHER_LEN;
2801 case SSL_CTRL_GET_EXTMS_SUPPORT:
2802 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2804 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2808 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2809 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2810 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2811 &sc->min_proto_version);
2812 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2813 return sc->min_proto_version;
2814 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2815 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2816 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2817 &sc->max_proto_version);
2818 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2819 return sc->max_proto_version;
2821 return s->method->ssl_ctrl(s, cmd, larg, parg);
2825 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2827 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2833 case SSL_CTRL_SET_MSG_CALLBACK:
2834 sc->msg_callback = (void (*)
2835 (int write_p, int version, int content_type,
2836 const void *buf, size_t len, SSL *ssl,
2841 return s->method->ssl_callback_ctrl(s, cmd, fp);
2845 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2847 return ctx->sessions;
2850 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2854 if (ssl_tsan_lock(ctx)) {
2855 res = tsan_load(stat);
2856 ssl_tsan_unlock(ctx);
2861 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2864 /* For some cases with ctx == NULL perform syntax checks */
2867 case SSL_CTRL_SET_GROUPS_LIST:
2868 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2869 case SSL_CTRL_SET_SIGALGS_LIST:
2870 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2871 return tls1_set_sigalgs_list(NULL, parg, 0);
2878 case SSL_CTRL_GET_READ_AHEAD:
2879 return ctx->read_ahead;
2880 case SSL_CTRL_SET_READ_AHEAD:
2881 l = ctx->read_ahead;
2882 ctx->read_ahead = larg;
2885 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2886 ctx->msg_callback_arg = parg;
2889 case SSL_CTRL_GET_MAX_CERT_LIST:
2890 return (long)ctx->max_cert_list;
2891 case SSL_CTRL_SET_MAX_CERT_LIST:
2894 l = (long)ctx->max_cert_list;
2895 ctx->max_cert_list = (size_t)larg;
2898 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2901 l = (long)ctx->session_cache_size;
2902 ctx->session_cache_size = (size_t)larg;
2904 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2905 return (long)ctx->session_cache_size;
2906 case SSL_CTRL_SET_SESS_CACHE_MODE:
2907 l = ctx->session_cache_mode;
2908 ctx->session_cache_mode = larg;
2910 case SSL_CTRL_GET_SESS_CACHE_MODE:
2911 return ctx->session_cache_mode;
2913 case SSL_CTRL_SESS_NUMBER:
2914 return lh_SSL_SESSION_num_items(ctx->sessions);
2915 case SSL_CTRL_SESS_CONNECT:
2916 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2917 case SSL_CTRL_SESS_CONNECT_GOOD:
2918 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2919 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2920 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2921 case SSL_CTRL_SESS_ACCEPT:
2922 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2923 case SSL_CTRL_SESS_ACCEPT_GOOD:
2924 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2925 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2926 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2927 case SSL_CTRL_SESS_HIT:
2928 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2929 case SSL_CTRL_SESS_CB_HIT:
2930 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2931 case SSL_CTRL_SESS_MISSES:
2932 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2933 case SSL_CTRL_SESS_TIMEOUTS:
2934 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2935 case SSL_CTRL_SESS_CACHE_FULL:
2936 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2938 return (ctx->mode |= larg);
2939 case SSL_CTRL_CLEAR_MODE:
2940 return (ctx->mode &= ~larg);
2941 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2942 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2944 ctx->max_send_fragment = larg;
2945 if (ctx->max_send_fragment < ctx->split_send_fragment)
2946 ctx->split_send_fragment = ctx->max_send_fragment;
2948 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2949 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2951 ctx->split_send_fragment = larg;
2953 case SSL_CTRL_SET_MAX_PIPELINES:
2954 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2956 ctx->max_pipelines = larg;
2958 case SSL_CTRL_CERT_FLAGS:
2959 return (ctx->cert->cert_flags |= larg);
2960 case SSL_CTRL_CLEAR_CERT_FLAGS:
2961 return (ctx->cert->cert_flags &= ~larg);
2962 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2963 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2964 && ssl_set_version_bound(ctx->method->version, (int)larg,
2965 &ctx->min_proto_version);
2966 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2967 return ctx->min_proto_version;
2968 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2969 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2970 && ssl_set_version_bound(ctx->method->version, (int)larg,
2971 &ctx->max_proto_version);
2972 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2973 return ctx->max_proto_version;
2975 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2979 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2982 case SSL_CTRL_SET_MSG_CALLBACK:
2983 ctx->msg_callback = (void (*)
2984 (int write_p, int version, int content_type,
2985 const void *buf, size_t len, SSL *ssl,
2990 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2994 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3003 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3004 const SSL_CIPHER *const *bp)
3006 if ((*ap)->id > (*bp)->id)
3008 if ((*ap)->id < (*bp)->id)
3014 * return a STACK of the ciphers available for the SSL and in order of
3017 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3019 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3022 if (sc->cipher_list != NULL) {
3023 return sc->cipher_list;
3024 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3025 return s->ctx->cipher_list;
3031 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3033 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3035 if (sc == NULL || !sc->server)
3037 return sc->peer_ciphers;
3040 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3042 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3049 ciphers = SSL_get_ciphers(s);
3052 if (!ssl_set_client_disabled(sc))
3054 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3055 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3056 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3058 sk = sk_SSL_CIPHER_new_null();
3061 if (!sk_SSL_CIPHER_push(sk, c)) {
3062 sk_SSL_CIPHER_free(sk);
3070 /** return a STACK of the ciphers available for the SSL and in order of
3072 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3075 if (s->cipher_list_by_id != NULL)
3076 return s->cipher_list_by_id;
3077 else if (s->ssl.ctx != NULL
3078 && s->ssl.ctx->cipher_list_by_id != NULL)
3079 return s->ssl.ctx->cipher_list_by_id;
3084 /** The old interface to get the same thing as SSL_get_ciphers() */
3085 const char *SSL_get_cipher_list(const SSL *s, int n)
3087 const SSL_CIPHER *c;
3088 STACK_OF(SSL_CIPHER) *sk;
3092 sk = SSL_get_ciphers(s);
3093 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3095 c = sk_SSL_CIPHER_value(sk, n);
3101 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3103 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3106 return ctx->cipher_list;
3111 * Distinguish between ciphers controlled by set_ciphersuite() and
3112 * set_cipher_list() when counting.
3114 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3117 const SSL_CIPHER *c;
3121 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3122 c = sk_SSL_CIPHER_value(sk, i);
3123 if (c->min_tls >= TLS1_3_VERSION)
3130 /** specify the ciphers to be used by default by the SSL_CTX */
3131 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3133 STACK_OF(SSL_CIPHER) *sk;
3135 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3136 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3139 * ssl_create_cipher_list may return an empty stack if it was unable to
3140 * find a cipher matching the given rule string (for example if the rule
3141 * string specifies a cipher which has been disabled). This is not an
3142 * error as far as ssl_create_cipher_list is concerned, and hence
3143 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3147 else if (cipher_list_tls12_num(sk) == 0) {
3148 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3154 /** specify the ciphers to be used by the SSL */
3155 int SSL_set_cipher_list(SSL *s, const char *str)
3157 STACK_OF(SSL_CIPHER) *sk;
3158 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3163 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3164 &sc->cipher_list, &sc->cipher_list_by_id, str,
3166 /* see comment in SSL_CTX_set_cipher_list */
3169 else if (cipher_list_tls12_num(sk) == 0) {
3170 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3176 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3179 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3180 const SSL_CIPHER *c;
3182 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3188 || sc->peer_ciphers == NULL
3193 clntsk = sc->peer_ciphers;
3194 srvrsk = SSL_get_ciphers(s);
3195 if (clntsk == NULL || srvrsk == NULL)
3198 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3201 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3204 c = sk_SSL_CIPHER_value(clntsk, i);
3205 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3208 n = strlen(c->name);
3225 * Return the requested servername (SNI) value. Note that the behaviour varies
3227 * - whether this is called by the client or the server,
3228 * - if we are before or during/after the handshake,
3229 * - if a resumption or normal handshake is being attempted/has occurred
3230 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3232 * Note that only the host_name type is defined (RFC 3546).
3234 const char *SSL_get_servername(const SSL *s, const int type)
3236 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3243 * If we don't know if we are the client or the server yet then we assume
3246 server = sc->handshake_func == NULL ? 0 : sc->server;
3248 if (type != TLSEXT_NAMETYPE_host_name)
3254 * In TLSv1.3 on the server SNI is not associated with the session
3255 * but in TLSv1.2 or below it is.
3257 * Before the handshake:
3260 * During/after the handshake (TLSv1.2 or below resumption occurred):
3261 * - If a servername was accepted by the server in the original
3262 * handshake then it will return that servername, or NULL otherwise.
3264 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3265 * - The function will return the servername requested by the client in
3266 * this handshake or NULL if none was requested.
3268 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3269 return sc->session->ext.hostname;
3274 * Before the handshake:
3275 * - If a servername has been set via a call to
3276 * SSL_set_tlsext_host_name() then it will return that servername
3277 * - If one has not been set, but a TLSv1.2 resumption is being
3278 * attempted and the session from the original handshake had a
3279 * servername accepted by the server then it will return that
3281 * - Otherwise it returns NULL
3283 * During/after the handshake (TLSv1.2 or below resumption occurred):
3284 * - If the session from the original handshake had a servername accepted
3285 * by the server then it will return that servername.
3286 * - Otherwise it returns the servername set via
3287 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3289 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3290 * - It will return the servername set via SSL_set_tlsext_host_name()
3291 * (or NULL if it was not called).
3293 if (SSL_in_before(s)) {
3294 if (sc->ext.hostname == NULL
3295 && sc->session != NULL
3296 && sc->session->ssl_version != TLS1_3_VERSION)
3297 return sc->session->ext.hostname;
3299 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3300 && sc->session->ext.hostname != NULL)
3301 return sc->session->ext.hostname;
3305 return sc->ext.hostname;
3308 int SSL_get_servername_type(const SSL *s)
3310 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3311 return TLSEXT_NAMETYPE_host_name;
3316 * SSL_select_next_proto implements the standard protocol selection. It is
3317 * expected that this function is called from the callback set by
3318 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3319 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3320 * not included in the length. A byte string of length 0 is invalid. No byte
3321 * string may be truncated. The current, but experimental algorithm for
3322 * selecting the protocol is: 1) If the server doesn't support NPN then this
3323 * is indicated to the callback. In this case, the client application has to
3324 * abort the connection or have a default application level protocol. 2) If
3325 * the server supports NPN, but advertises an empty list then the client
3326 * selects the first protocol in its list, but indicates via the API that this
3327 * fallback case was enacted. 3) Otherwise, the client finds the first
3328 * protocol in the server's list that it supports and selects this protocol.
3329 * This is because it's assumed that the server has better information about
3330 * which protocol a client should use. 4) If the client doesn't support any
3331 * of the server's advertised protocols, then this is treated the same as
3332 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3333 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3335 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3336 const unsigned char *server,
3337 unsigned int server_len,
3338 const unsigned char *client, unsigned int client_len)
3341 const unsigned char *result;
3342 int status = OPENSSL_NPN_UNSUPPORTED;
3345 * For each protocol in server preference order, see if we support it.
3347 for (i = 0; i < server_len;) {
3348 for (j = 0; j < client_len;) {
3349 if (server[i] == client[j] &&
3350 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3351 /* We found a match */
3352 result = &server[i];
3353 status = OPENSSL_NPN_NEGOTIATED;
3363 /* There's no overlap between our protocols and the server's list. */
3365 status = OPENSSL_NPN_NO_OVERLAP;
3368 *out = (unsigned char *)result + 1;
3369 *outlen = result[0];
3373 #ifndef OPENSSL_NO_NEXTPROTONEG
3375 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3376 * client's requested protocol for this connection and returns 0. If the
3377 * client didn't request any protocol, then *data is set to NULL. Note that
3378 * the client can request any protocol it chooses. The value returned from
3379 * this function need not be a member of the list of supported protocols
3380 * provided by the callback.
3382 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3385 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3388 /* We have no other way to indicate error */
3394 *data = sc->ext.npn;
3395 if (*data == NULL) {
3398 *len = (unsigned int)sc->ext.npn_len;
3403 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3404 * a TLS server needs a list of supported protocols for Next Protocol
3405 * Negotiation. The returned list must be in wire format. The list is
3406 * returned by setting |out| to point to it and |outlen| to its length. This
3407 * memory will not be modified, but one should assume that the SSL* keeps a
3408 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3409 * wishes to advertise. Otherwise, no such extension will be included in the
3412 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3413 SSL_CTX_npn_advertised_cb_func cb,
3416 ctx->ext.npn_advertised_cb = cb;
3417 ctx->ext.npn_advertised_cb_arg = arg;
3421 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3422 * client needs to select a protocol from the server's provided list. |out|
3423 * must be set to point to the selected protocol (which may be within |in|).
3424 * The length of the protocol name must be written into |outlen|. The
3425 * server's advertised protocols are provided in |in| and |inlen|. The
3426 * callback can assume that |in| is syntactically valid. The client must
3427 * select a protocol. It is fatal to the connection if this callback returns
3428 * a value other than SSL_TLSEXT_ERR_OK.
3430 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3431 SSL_CTX_npn_select_cb_func cb,
3434 ctx->ext.npn_select_cb = cb;
3435 ctx->ext.npn_select_cb_arg = arg;
3439 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3443 if (protos_len < 2 || protos == NULL)
3446 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3447 if (protos[idx] == 0)
3450 return idx == protos_len;
3453 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3454 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3455 * length-prefixed strings). Returns 0 on success.
3457 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3458 unsigned int protos_len)
3460 unsigned char *alpn;
3462 if (protos_len == 0 || protos == NULL) {
3463 OPENSSL_free(ctx->ext.alpn);
3464 ctx->ext.alpn = NULL;
3465 ctx->ext.alpn_len = 0;
3468 /* Not valid per RFC */
3469 if (!alpn_value_ok(protos, protos_len))
3472 alpn = OPENSSL_memdup(protos, protos_len);
3474 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3477 OPENSSL_free(ctx->ext.alpn);
3478 ctx->ext.alpn = alpn;
3479 ctx->ext.alpn_len = protos_len;
3485 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3486 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3487 * length-prefixed strings). Returns 0 on success.
3489 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3490 unsigned int protos_len)
3492 unsigned char *alpn;
3493 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3498 if (protos_len == 0 || protos == NULL) {
3499 OPENSSL_free(sc->ext.alpn);
3500 sc->ext.alpn = NULL;
3501 sc->ext.alpn_len = 0;
3504 /* Not valid per RFC */
3505 if (!alpn_value_ok(protos, protos_len))
3508 alpn = OPENSSL_memdup(protos, protos_len);
3510 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3513 OPENSSL_free(sc->ext.alpn);
3514 sc->ext.alpn = alpn;
3515 sc->ext.alpn_len = protos_len;
3521 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3522 * called during ClientHello processing in order to select an ALPN protocol
3523 * from the client's list of offered protocols.
3525 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3526 SSL_CTX_alpn_select_cb_func cb,
3529 ctx->ext.alpn_select_cb = cb;
3530 ctx->ext.alpn_select_cb_arg = arg;
3534 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3535 * On return it sets |*data| to point to |*len| bytes of protocol name
3536 * (not including the leading length-prefix byte). If the server didn't
3537 * respond with a negotiated protocol then |*len| will be zero.
3539 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3542 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3545 /* We have no other way to indicate error */
3551 *data = sc->s3.alpn_selected;
3555 *len = (unsigned int)sc->s3.alpn_selected_len;
3558 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3559 const char *label, size_t llen,
3560 const unsigned char *context, size_t contextlen,
3563 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3568 if (sc->session == NULL
3569 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3572 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3574 contextlen, use_context);
3577 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3578 const char *label, size_t llen,
3579 const unsigned char *context,
3582 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3587 if (sc->version != TLS1_3_VERSION)
3590 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3591 context, contextlen);
3594 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3596 const unsigned char *session_id = a->session_id;
3598 unsigned char tmp_storage[4];
3600 if (a->session_id_length < sizeof(tmp_storage)) {
3601 memset(tmp_storage, 0, sizeof(tmp_storage));
3602 memcpy(tmp_storage, a->session_id, a->session_id_length);
3603 session_id = tmp_storage;
3607 ((unsigned long)session_id[0]) |
3608 ((unsigned long)session_id[1] << 8L) |
3609 ((unsigned long)session_id[2] << 16L) |
3610 ((unsigned long)session_id[3] << 24L);
3615 * NB: If this function (or indeed the hash function which uses a sort of
3616 * coarser function than this one) is changed, ensure
3617 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3618 * being able to construct an SSL_SESSION that will collide with any existing
3619 * session with a matching session ID.
3621 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3623 if (a->ssl_version != b->ssl_version)
3625 if (a->session_id_length != b->session_id_length)
3627 return memcmp(a->session_id, b->session_id, a->session_id_length);
3631 * These wrapper functions should remain rather than redeclaring
3632 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3633 * variable. The reason is that the functions aren't static, they're exposed
3637 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3638 const SSL_METHOD *meth)
3640 SSL_CTX *ret = NULL;
3643 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3647 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3650 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3651 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3654 ret = OPENSSL_zalloc(sizeof(*ret));
3658 /* Init the reference counting before any call to SSL_CTX_free */
3659 ret->references = 1;
3660 ret->lock = CRYPTO_THREAD_lock_new();
3661 if (ret->lock == NULL) {
3662 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3667 #ifdef TSAN_REQUIRES_LOCKING
3668 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3669 if (ret->tsan_lock == NULL) {
3670 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3675 ret->libctx = libctx;
3676 if (propq != NULL) {
3677 ret->propq = OPENSSL_strdup(propq);
3678 if (ret->propq == NULL)
3683 ret->min_proto_version = 0;
3684 ret->max_proto_version = 0;
3685 ret->mode = SSL_MODE_AUTO_RETRY;
3686 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3687 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3688 /* We take the system default. */
3689 ret->session_timeout = meth->get_timeout();
3690 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3691 ret->verify_mode = SSL_VERIFY_NONE;
3692 if ((ret->cert = ssl_cert_new()) == NULL)
3695 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3696 if (ret->sessions == NULL)
3698 ret->cert_store = X509_STORE_new();
3699 if (ret->cert_store == NULL)
3701 #ifndef OPENSSL_NO_CT
3702 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3703 if (ret->ctlog_store == NULL)
3707 /* initialize cipher/digest methods table */
3708 if (!ssl_load_ciphers(ret))
3710 /* initialise sig algs */
3711 if (!ssl_setup_sig_algs(ret))
3715 if (!ssl_load_groups(ret))
3718 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3721 if (!ssl_create_cipher_list(ret,
3722 ret->tls13_ciphersuites,
3723 &ret->cipher_list, &ret->cipher_list_by_id,
3724 OSSL_default_cipher_list(), ret->cert)
3725 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3726 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3730 ret->param = X509_VERIFY_PARAM_new();
3731 if (ret->param == NULL)
3735 * If these aren't available from the provider we'll get NULL returns.
3736 * That's fine but will cause errors later if SSLv3 is negotiated
3738 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3739 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3741 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3744 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3747 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3750 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3753 /* No compression for DTLS */
3754 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3755 ret->comp_methods = SSL_COMP_get_compression_methods();
3757 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3758 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3760 /* Setup RFC5077 ticket keys */
3761 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3762 sizeof(ret->ext.tick_key_name), 0) <= 0)
3763 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3764 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3765 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3766 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3767 ret->options |= SSL_OP_NO_TICKET;
3769 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3770 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3773 #ifndef OPENSSL_NO_SRP
3774 if (!ssl_ctx_srp_ctx_init_intern(ret))
3777 #ifndef OPENSSL_NO_ENGINE
3778 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3779 # define eng_strx(x) #x
3780 # define eng_str(x) eng_strx(x)
3781 /* Use specific client engine automatically... ignore errors */
3784 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3787 ENGINE_load_builtin_engines();
3788 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3790 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3796 * Disable compression by default to prevent CRIME. Applications can
3797 * re-enable compression by configuring
3798 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3799 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3800 * middlebox compatibility by default. This may be disabled by default in
3801 * a later OpenSSL version.
3803 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3805 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3808 * We cannot usefully set a default max_early_data here (which gets
3809 * propagated in SSL_new(), for the following reason: setting the
3810 * SSL field causes tls_construct_stoc_early_data() to tell the
3811 * client that early data will be accepted when constructing a TLS 1.3
3812 * session ticket, and the client will accordingly send us early data
3813 * when using that ticket (if the client has early data to send).
3814 * However, in order for the early data to actually be consumed by
3815 * the application, the application must also have calls to
3816 * SSL_read_early_data(); otherwise we'll just skip past the early data
3817 * and ignore it. So, since the application must add calls to
3818 * SSL_read_early_data(), we also require them to add
3819 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3820 * eliminating the bandwidth-wasting early data in the case described
3823 ret->max_early_data = 0;
3826 * Default recv_max_early_data is a fully loaded single record. Could be
3827 * split across multiple records in practice. We set this differently to
3828 * max_early_data so that, in the default case, we do not advertise any
3829 * support for early_data, but if a client were to send us some (e.g.
3830 * because of an old, stale ticket) then we will tolerate it and skip over
3833 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3835 /* By default we send two session tickets automatically in TLSv1.3 */
3836 ret->num_tickets = 2;
3838 ssl_ctx_system_config(ret);
3842 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3848 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3850 return SSL_CTX_new_ex(NULL, NULL, meth);
3853 int SSL_CTX_up_ref(SSL_CTX *ctx)
3857 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3860 REF_PRINT_COUNT("SSL_CTX", ctx);
3861 REF_ASSERT_ISNT(i < 2);
3862 return ((i > 1) ? 1 : 0);
3865 void SSL_CTX_free(SSL_CTX *a)
3873 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3874 REF_PRINT_COUNT("SSL_CTX", a);
3877 REF_ASSERT_ISNT(i < 0);
3879 X509_VERIFY_PARAM_free(a->param);
3880 dane_ctx_final(&a->dane);
3883 * Free internal session cache. However: the remove_cb() may reference
3884 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3885 * after the sessions were flushed.
3886 * As the ex_data handling routines might also touch the session cache,
3887 * the most secure solution seems to be: empty (flush) the cache, then
3888 * free ex_data, then finally free the cache.
3889 * (See ticket [openssl.org #212].)
3891 if (a->sessions != NULL)
3892 SSL_CTX_flush_sessions(a, 0);
3894 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3895 lh_SSL_SESSION_free(a->sessions);
3896 X509_STORE_free(a->cert_store);
3897 #ifndef OPENSSL_NO_CT
3898 CTLOG_STORE_free(a->ctlog_store);
3900 sk_SSL_CIPHER_free(a->cipher_list);
3901 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3902 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3903 ssl_cert_free(a->cert);
3904 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3905 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3906 OSSL_STACK_OF_X509_free(a->extra_certs);
3907 a->comp_methods = NULL;
3908 #ifndef OPENSSL_NO_SRTP
3909 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3911 #ifndef OPENSSL_NO_SRP
3912 ssl_ctx_srp_ctx_free_intern(a);
3914 #ifndef OPENSSL_NO_ENGINE
3915 tls_engine_finish(a->client_cert_engine);
3918 OPENSSL_free(a->ext.ecpointformats);
3919 OPENSSL_free(a->ext.supportedgroups);
3920 OPENSSL_free(a->ext.supported_groups_default);
3921 OPENSSL_free(a->ext.alpn);
3922 OPENSSL_secure_free(a->ext.secure);
3924 ssl_evp_md_free(a->md5);
3925 ssl_evp_md_free(a->sha1);
3927 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3928 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3929 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3930 ssl_evp_md_free(a->ssl_digest_methods[j]);
3931 for (j = 0; j < a->group_list_len; j++) {
3932 OPENSSL_free(a->group_list[j].tlsname);
3933 OPENSSL_free(a->group_list[j].realname);
3934 OPENSSL_free(a->group_list[j].algorithm);
3936 OPENSSL_free(a->group_list);
3938 OPENSSL_free(a->sigalg_lookup_cache);
3940 CRYPTO_THREAD_lock_free(a->lock);
3941 #ifdef TSAN_REQUIRES_LOCKING
3942 CRYPTO_THREAD_lock_free(a->tsan_lock);
3945 OPENSSL_free(a->propq);
3950 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3952 ctx->default_passwd_callback = cb;
3955 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3957 ctx->default_passwd_callback_userdata = u;
3960 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3962 return ctx->default_passwd_callback;
3965 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3967 return ctx->default_passwd_callback_userdata;
3970 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3972 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3977 sc->default_passwd_callback = cb;
3980 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3982 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3987 sc->default_passwd_callback_userdata = u;
3990 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3992 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3997 return sc->default_passwd_callback;
4000 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4002 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4007 return sc->default_passwd_callback_userdata;
4010 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4011 int (*cb) (X509_STORE_CTX *, void *),
4014 ctx->app_verify_callback = cb;
4015 ctx->app_verify_arg = arg;
4018 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4019 int (*cb) (int, X509_STORE_CTX *))
4021 ctx->verify_mode = mode;
4022 ctx->default_verify_callback = cb;
4025 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4027 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4030 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4032 ssl_cert_set_cert_cb(c->cert, cb, arg);
4035 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4037 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4042 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4045 void ssl_set_masks(SSL_CONNECTION *s)
4048 uint32_t *pvalid = s->s3.tmp.valid_flags;
4049 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4050 unsigned long mask_k, mask_a;
4051 int have_ecc_cert, ecdsa_ok;
4056 dh_tmp = (c->dh_tmp != NULL
4057 || c->dh_tmp_cb != NULL
4060 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4061 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4062 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4063 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4067 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4068 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4070 #ifndef OPENSSL_NO_GOST
4071 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4072 mask_k |= SSL_kGOST | SSL_kGOST18;
4073 mask_a |= SSL_aGOST12;
4075 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4076 mask_k |= SSL_kGOST | SSL_kGOST18;
4077 mask_a |= SSL_aGOST12;
4079 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4080 mask_k |= SSL_kGOST;
4081 mask_a |= SSL_aGOST01;
4092 * If we only have an RSA-PSS certificate allow RSA authentication
4093 * if TLS 1.2 and peer supports it.
4096 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4097 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4098 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4105 mask_a |= SSL_aNULL;
4108 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4109 * depending on the key usage extension.
4111 if (have_ecc_cert) {
4113 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4114 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4115 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4118 mask_a |= SSL_aECDSA;
4120 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4121 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4122 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4123 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4124 mask_a |= SSL_aECDSA;
4126 /* Allow Ed448 for TLS 1.2 if peer supports it */
4127 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4128 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4129 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4130 mask_a |= SSL_aECDSA;
4132 mask_k |= SSL_kECDHE;
4134 #ifndef OPENSSL_NO_PSK
4137 if (mask_k & SSL_kRSA)
4138 mask_k |= SSL_kRSAPSK;
4139 if (mask_k & SSL_kDHE)
4140 mask_k |= SSL_kDHEPSK;
4141 if (mask_k & SSL_kECDHE)
4142 mask_k |= SSL_kECDHEPSK;
4145 s->s3.tmp.mask_k = mask_k;
4146 s->s3.tmp.mask_a = mask_a;
4149 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4151 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4152 /* key usage, if present, must allow signing */
4153 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4154 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4158 return 1; /* all checks are ok */
4161 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4162 const unsigned char **serverinfo,
4163 size_t *serverinfo_length)
4165 CERT_PKEY *cpk = s->s3.tmp.cert;
4166 *serverinfo_length = 0;
4168 if (cpk == NULL || cpk->serverinfo == NULL)
4171 *serverinfo = cpk->serverinfo;
4172 *serverinfo_length = cpk->serverinfo_length;
4176 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4181 * If the session_id_length is 0, we are not supposed to cache it, and it
4182 * would be rather hard to do anyway :-)
4184 if (s->session->session_id_length == 0)
4188 * If sid_ctx_length is 0 there is no specific application context
4189 * associated with this session, so when we try to resume it and
4190 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4191 * indication that this is actually a session for the proper application
4192 * context, and the *handshake* will fail, not just the resumption attempt.
4193 * Do not cache (on the server) these sessions that are not resumable
4194 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4196 if (s->server && s->session->sid_ctx_length == 0
4197 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4200 i = s->session_ctx->session_cache_mode;
4202 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4204 * Add the session to the internal cache. In server side TLSv1.3 we
4205 * normally don't do this because by default it's a full stateless ticket
4206 * with only a dummy session id so there is no reason to cache it,
4208 * - we are doing early_data, in which case we cache so that we can
4210 * - the application has set a remove_session_cb so needs to know about
4211 * session timeout events
4212 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4214 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4215 && (!SSL_CONNECTION_IS_TLS13(s)
4217 || (s->max_early_data > 0
4218 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4219 || s->session_ctx->remove_session_cb != NULL
4220 || (s->options & SSL_OP_NO_TICKET) != 0))
4221 SSL_CTX_add_session(s->session_ctx, s->session);
4224 * Add the session to the external cache. We do this even in server side
4225 * TLSv1.3 without early data because some applications just want to
4226 * know about the creation of a session and aren't doing a full cache.
4228 if (s->session_ctx->new_session_cb != NULL) {
4229 SSL_SESSION_up_ref(s->session);
4230 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4232 SSL_SESSION_free(s->session);
4236 /* auto flush every 255 connections */
4237 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4238 TSAN_QUALIFIER int *stat;
4240 if (mode & SSL_SESS_CACHE_CLIENT)
4241 stat = &s->session_ctx->stats.sess_connect_good;
4243 stat = &s->session_ctx->stats.sess_accept_good;
4244 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4245 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4249 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4254 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4259 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4262 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4264 /* TODO(QUIC): Do we want this for QUIC? */
4266 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4269 if (s->method != meth) {
4270 const SSL_METHOD *sm = s->method;
4271 int (*hf) (SSL *) = sc->handshake_func;
4273 if (sm->version == meth->version)
4278 ret = s->method->ssl_init(s);
4281 if (hf == sm->ssl_connect)
4282 sc->handshake_func = meth->ssl_connect;
4283 else if (hf == sm->ssl_accept)
4284 sc->handshake_func = meth->ssl_accept;
4289 int SSL_get_error(const SSL *s, int i)
4294 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4297 return SSL_ERROR_NONE;
4299 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4301 return SSL_ERROR_SSL;
4304 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4305 * where we do encode the error
4307 if ((l = ERR_peek_error()) != 0) {
4308 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4309 return SSL_ERROR_SYSCALL;
4311 return SSL_ERROR_SSL;
4314 if (SSL_want_read(s)) {
4315 bio = SSL_get_rbio(s);
4316 if (BIO_should_read(bio))
4317 return SSL_ERROR_WANT_READ;
4318 else if (BIO_should_write(bio))
4320 * This one doesn't make too much sense ... We never try to write
4321 * to the rbio, and an application program where rbio and wbio
4322 * are separate couldn't even know what it should wait for.
4323 * However if we ever set s->rwstate incorrectly (so that we have
4324 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4325 * wbio *are* the same, this test works around that bug; so it
4326 * might be safer to keep it.
4328 return SSL_ERROR_WANT_WRITE;
4329 else if (BIO_should_io_special(bio)) {
4330 reason = BIO_get_retry_reason(bio);
4331 if (reason == BIO_RR_CONNECT)
4332 return SSL_ERROR_WANT_CONNECT;
4333 else if (reason == BIO_RR_ACCEPT)
4334 return SSL_ERROR_WANT_ACCEPT;
4336 return SSL_ERROR_SYSCALL; /* unknown */
4340 if (SSL_want_write(s)) {
4341 /* Access wbio directly - in order to use the buffered bio if present */
4343 if (BIO_should_write(bio))
4344 return SSL_ERROR_WANT_WRITE;
4345 else if (BIO_should_read(bio))
4347 * See above (SSL_want_read(s) with BIO_should_write(bio))
4349 return SSL_ERROR_WANT_READ;
4350 else if (BIO_should_io_special(bio)) {
4351 reason = BIO_get_retry_reason(bio);
4352 if (reason == BIO_RR_CONNECT)
4353 return SSL_ERROR_WANT_CONNECT;
4354 else if (reason == BIO_RR_ACCEPT)
4355 return SSL_ERROR_WANT_ACCEPT;
4357 return SSL_ERROR_SYSCALL;
4360 if (SSL_want_x509_lookup(s))
4361 return SSL_ERROR_WANT_X509_LOOKUP;
4362 if (SSL_want_retry_verify(s))
4363 return SSL_ERROR_WANT_RETRY_VERIFY;
4364 if (SSL_want_async(s))
4365 return SSL_ERROR_WANT_ASYNC;
4366 if (SSL_want_async_job(s))
4367 return SSL_ERROR_WANT_ASYNC_JOB;
4368 if (SSL_want_client_hello_cb(s))
4369 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4371 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4372 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4373 return SSL_ERROR_ZERO_RETURN;
4375 return SSL_ERROR_SYSCALL;
4378 static int ssl_do_handshake_intern(void *vargs)
4380 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4382 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4387 return sc->handshake_func(s);
4390 int SSL_do_handshake(SSL *s)
4393 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4395 /* TODO(QUIC): Special handling for QUIC will be needed */
4399 if (sc->handshake_func == NULL) {
4400 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4404 ossl_statem_check_finish_init(sc, -1);
4406 s->method->ssl_renegotiate_check(s, 0);
4408 if (SSL_in_init(s) || SSL_in_before(s)) {
4409 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4410 struct ssl_async_args args;
4412 memset(&args, 0, sizeof(args));
4415 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4417 ret = sc->handshake_func(s);
4423 void SSL_set_accept_state(SSL *s)
4425 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4427 /* TODO(QUIC): Special handling for QUIC will be needed */
4433 ossl_statem_clear(sc);
4434 sc->handshake_func = s->method->ssl_accept;
4438 void SSL_set_connect_state(SSL *s)
4440 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4442 /* TODO(QUIC): Special handling for QUIC will be needed */
4448 ossl_statem_clear(sc);
4449 sc->handshake_func = s->method->ssl_connect;
4453 int ssl_undefined_function(SSL *s)
4455 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4459 int ssl_undefined_void_function(void)
4461 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4465 int ssl_undefined_const_function(const SSL *s)
4470 const SSL_METHOD *ssl_bad_method(int ver)
4472 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4476 const char *ssl_protocol_to_string(int version)
4480 case TLS1_3_VERSION:
4483 case TLS1_2_VERSION:
4486 case TLS1_1_VERSION:
4501 case DTLS1_2_VERSION:
4509 const char *SSL_get_version(const SSL *s)
4511 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4513 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4517 return ssl_protocol_to_string(sc->version);
4520 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4522 STACK_OF(X509_NAME) *sk;
4531 if ((sk = sk_X509_NAME_new_null()) == NULL)
4533 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4534 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4536 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4539 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4541 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4550 SSL *SSL_dup(SSL *s)
4554 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4555 SSL_CONNECTION *retsc;
4556 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4561 /* If we're not quiescent, just up_ref! */
4562 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4563 CRYPTO_UP_REF(&s->references, &i, s->lock);
4568 * Otherwise, copy configuration state, and session if set.
4570 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4572 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4575 if (sc->session != NULL) {
4577 * Arranges to share the same session via up_ref. This "copies"
4578 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4580 if (!SSL_copy_session_id(ret, s))
4584 * No session has been established yet, so we have to expect that
4585 * s->cert or ret->cert will be changed later -- they should not both
4586 * point to the same object, and thus we can't use
4587 * SSL_copy_session_id.
4589 if (!SSL_set_ssl_method(ret, s->method))
4592 if (sc->cert != NULL) {
4593 ssl_cert_free(retsc->cert);
4594 retsc->cert = ssl_cert_dup(sc->cert);
4595 if (retsc->cert == NULL)
4599 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4600 (int)sc->sid_ctx_length))
4604 if (!ssl_dane_dup(retsc, sc))
4606 retsc->version = sc->version;
4607 retsc->options = sc->options;
4608 retsc->min_proto_version = sc->min_proto_version;
4609 retsc->max_proto_version = sc->max_proto_version;
4610 retsc->mode = sc->mode;
4611 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4612 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4613 retsc->msg_callback = sc->msg_callback;
4614 retsc->msg_callback_arg = sc->msg_callback_arg;
4615 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4616 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4617 retsc->generate_session_id = sc->generate_session_id;
4619 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4621 /* copy app data, a little dangerous perhaps */
4622 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4625 retsc->server = sc->server;
4626 if (sc->handshake_func) {
4628 SSL_set_accept_state(ret);
4630 SSL_set_connect_state(ret);
4632 retsc->shutdown = sc->shutdown;
4633 retsc->hit = sc->hit;
4635 retsc->default_passwd_callback = sc->default_passwd_callback;
4636 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4638 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4640 /* dup the cipher_list and cipher_list_by_id stacks */
4641 if (sc->cipher_list != NULL) {
4642 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4645 if (sc->cipher_list_by_id != NULL)
4646 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4650 /* Dup the client_CA list */
4651 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4652 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4662 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4664 if (s->enc_read_ctx != NULL) {
4665 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4666 s->enc_read_ctx = NULL;
4668 if (s->enc_write_ctx != NULL) {
4669 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4670 s->enc_write_ctx = NULL;
4672 #ifndef OPENSSL_NO_COMP
4673 COMP_CTX_free(s->expand);
4675 COMP_CTX_free(s->compress);
4680 X509 *SSL_get_certificate(const SSL *s)
4682 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4687 if (sc->cert != NULL)
4688 return sc->cert->key->x509;
4693 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4695 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4700 if (sc->cert != NULL)
4701 return sc->cert->key->privatekey;
4706 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4708 if (ctx->cert != NULL)
4709 return ctx->cert->key->x509;
4714 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4716 if (ctx->cert != NULL)
4717 return ctx->cert->key->privatekey;
4722 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4724 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4729 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4730 return sc->session->cipher;
4734 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4736 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4741 return sc->s3.tmp.new_cipher;
4744 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4746 #ifndef OPENSSL_NO_COMP
4747 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4752 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4758 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4760 #ifndef OPENSSL_NO_COMP
4761 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4766 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4772 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4776 if (s->bbio != NULL) {
4777 /* Already buffered. */
4781 bbio = BIO_new(BIO_f_buffer());
4782 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4784 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4788 s->wbio = BIO_push(bbio, s->wbio);
4793 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4795 /* callers ensure s is never null */
4796 if (s->bbio == NULL)
4799 s->wbio = BIO_pop(s->wbio);
4806 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4808 ctx->quiet_shutdown = mode;
4811 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4813 return ctx->quiet_shutdown;
4816 void SSL_set_quiet_shutdown(SSL *s, int mode)
4818 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4820 /* TODO(QUIC): Do we want this for QUIC? */
4824 sc->quiet_shutdown = mode;
4827 int SSL_get_quiet_shutdown(const SSL *s)
4829 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4831 /* TODO(QUIC): Do we want this for QUIC? */
4835 return sc->quiet_shutdown;
4838 void SSL_set_shutdown(SSL *s, int mode)
4840 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4842 /* TODO(QUIC): Do we want this for QUIC? */
4846 sc->shutdown = mode;
4849 int SSL_get_shutdown(const SSL *s)
4851 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4853 /* TODO(QUIC): Do we want this for QUIC? */
4857 return sc->shutdown;
4860 int SSL_version(const SSL *s)
4862 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4864 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4871 int SSL_client_version(const SSL *s)
4873 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4875 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4879 return sc->client_version;
4882 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4887 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4890 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4892 /* TODO(QUIC): Do we need this for QUIC support? */
4896 if (ssl->ctx == ctx)
4899 ctx = sc->session_ctx;
4900 new_cert = ssl_cert_dup(ctx->cert);
4901 if (new_cert == NULL) {
4905 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4906 ssl_cert_free(new_cert);
4910 ssl_cert_free(sc->cert);
4911 sc->cert = new_cert;
4914 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4915 * so setter APIs must prevent invalid lengths from entering the system.
4917 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4921 * If the session ID context matches that of the parent SSL_CTX,
4922 * inherit it from the new SSL_CTX as well. If however the context does
4923 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4924 * leave it unchanged.
4926 if ((ssl->ctx != NULL) &&
4927 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4928 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4929 sc->sid_ctx_length = ctx->sid_ctx_length;
4930 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4933 SSL_CTX_up_ref(ctx);
4934 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4940 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4942 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4946 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4948 X509_LOOKUP *lookup;
4950 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4954 /* We ignore errors, in case the directory doesn't exist */
4957 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4964 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4966 X509_LOOKUP *lookup;
4968 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4972 /* We ignore errors, in case the file doesn't exist */
4975 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4983 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4985 X509_LOOKUP *lookup;
4987 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4991 /* We ignore errors, in case the directory doesn't exist */
4994 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5001 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5003 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5007 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5009 return X509_STORE_load_path(ctx->cert_store, CApath);
5012 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5014 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5018 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5021 if (CAfile == NULL && CApath == NULL)
5023 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5025 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5030 void SSL_set_info_callback(SSL *ssl,
5031 void (*cb) (const SSL *ssl, int type, int val))
5033 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5038 sc->info_callback = cb;
5042 * One compiler (Diab DCC) doesn't like argument names in returned function
5045 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5048 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5053 return sc->info_callback;
5056 void SSL_set_verify_result(SSL *ssl, long arg)
5058 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5063 sc->verify_result = arg;
5066 long SSL_get_verify_result(const SSL *ssl)
5068 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5073 return sc->verify_result;
5076 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5078 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5084 return sizeof(sc->s3.client_random);
5085 if (outlen > sizeof(sc->s3.client_random))
5086 outlen = sizeof(sc->s3.client_random);
5087 memcpy(out, sc->s3.client_random, outlen);
5091 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5093 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5099 return sizeof(sc->s3.server_random);
5100 if (outlen > sizeof(sc->s3.server_random))
5101 outlen = sizeof(sc->s3.server_random);
5102 memcpy(out, sc->s3.server_random, outlen);
5106 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5107 unsigned char *out, size_t outlen)
5110 return session->master_key_length;
5111 if (outlen > session->master_key_length)
5112 outlen = session->master_key_length;
5113 memcpy(out, session->master_key, outlen);
5117 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5120 if (len > sizeof(sess->master_key))
5123 memcpy(sess->master_key, in, len);
5124 sess->master_key_length = len;
5129 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5131 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5134 void *SSL_get_ex_data(const SSL *s, int idx)
5136 return CRYPTO_get_ex_data(&s->ex_data, idx);
5139 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5141 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5144 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5146 return CRYPTO_get_ex_data(&s->ex_data, idx);
5149 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5151 return ctx->cert_store;
5154 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5156 X509_STORE_free(ctx->cert_store);
5157 ctx->cert_store = store;
5160 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5163 X509_STORE_up_ref(store);
5164 SSL_CTX_set_cert_store(ctx, store);
5167 int SSL_want(const SSL *s)
5169 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5177 #ifndef OPENSSL_NO_PSK
5178 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5180 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5181 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5184 OPENSSL_free(ctx->cert->psk_identity_hint);
5185 if (identity_hint != NULL) {
5186 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5187 if (ctx->cert->psk_identity_hint == NULL)
5190 ctx->cert->psk_identity_hint = NULL;
5194 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5196 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5201 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5202 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5205 OPENSSL_free(sc->cert->psk_identity_hint);
5206 if (identity_hint != NULL) {
5207 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5208 if (sc->cert->psk_identity_hint == NULL)
5211 sc->cert->psk_identity_hint = NULL;
5215 const char *SSL_get_psk_identity_hint(const SSL *s)
5217 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5219 if (sc == NULL || sc->session == NULL)
5222 return sc->session->psk_identity_hint;
5225 const char *SSL_get_psk_identity(const SSL *s)
5227 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5229 if (sc == NULL || sc->session == NULL)
5232 return sc->session->psk_identity;
5235 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5237 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5242 sc->psk_client_callback = cb;
5245 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5247 ctx->psk_client_callback = cb;
5250 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5252 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5257 sc->psk_server_callback = cb;
5260 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5262 ctx->psk_server_callback = cb;
5266 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5268 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5273 sc->psk_find_session_cb = cb;
5276 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5277 SSL_psk_find_session_cb_func cb)
5279 ctx->psk_find_session_cb = cb;
5282 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5284 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5289 sc->psk_use_session_cb = cb;
5292 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5293 SSL_psk_use_session_cb_func cb)
5295 ctx->psk_use_session_cb = cb;
5298 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5299 void (*cb) (int write_p, int version,
5300 int content_type, const void *buf,
5301 size_t len, SSL *ssl, void *arg))
5303 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5306 void SSL_set_msg_callback(SSL *ssl,
5307 void (*cb) (int write_p, int version,
5308 int content_type, const void *buf,
5309 size_t len, SSL *ssl, void *arg))
5311 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5314 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5315 int (*cb) (SSL *ssl,
5319 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5320 (void (*)(void))cb);
5323 void SSL_set_not_resumable_session_callback(SSL *ssl,
5324 int (*cb) (SSL *ssl,
5325 int is_forward_secure))
5327 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5328 (void (*)(void))cb);
5331 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5332 size_t (*cb) (SSL *ssl, int type,
5333 size_t len, void *arg))
5335 ctx->record_padding_cb = cb;
5338 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5340 ctx->record_padding_arg = arg;
5343 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5345 return ctx->record_padding_arg;
5348 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5350 /* block size of 0 or 1 is basically no padding */
5351 if (block_size == 1)
5352 ctx->block_padding = 0;
5353 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5354 ctx->block_padding = block_size;
5360 int SSL_set_record_padding_callback(SSL *ssl,
5361 size_t (*cb) (SSL *ssl, int type,
5362 size_t len, void *arg))
5365 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5370 b = SSL_get_wbio(ssl);
5371 if (b == NULL || !BIO_get_ktls_send(b)) {
5372 sc->record_padding_cb = cb;
5378 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5380 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5385 sc->record_padding_arg = arg;
5388 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5390 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5395 return sc->record_padding_arg;
5398 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5400 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5405 /* block size of 0 or 1 is basically no padding */
5406 if (block_size == 1)
5407 sc->block_padding = 0;
5408 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5409 sc->block_padding = block_size;
5415 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5417 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5422 sc->num_tickets = num_tickets;
5427 size_t SSL_get_num_tickets(const SSL *s)
5429 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5434 return sc->num_tickets;
5437 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5439 ctx->num_tickets = num_tickets;
5444 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5446 return ctx->num_tickets;
5450 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5451 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5452 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5453 * Returns the newly allocated ctx;
5456 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5458 ssl_clear_hash_ctx(hash);
5459 *hash = EVP_MD_CTX_new();
5460 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5461 EVP_MD_CTX_free(*hash);
5468 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5471 EVP_MD_CTX_free(*hash);
5475 /* Retrieve handshake hashes */
5476 int ssl_handshake_hash(SSL_CONNECTION *s,
5477 unsigned char *out, size_t outlen,
5480 EVP_MD_CTX *ctx = NULL;
5481 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5482 int hashleni = EVP_MD_CTX_get_size(hdgst);
5485 if (hashleni < 0 || (size_t)hashleni > outlen) {
5486 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5490 ctx = EVP_MD_CTX_new();
5492 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5496 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5497 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5498 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5502 *hashlen = hashleni;
5506 EVP_MD_CTX_free(ctx);
5510 int SSL_session_reused(const SSL *s)
5512 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5520 int SSL_is_server(const SSL *s)
5522 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5530 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5531 void SSL_set_debug(SSL *s, int debug)
5533 /* Old function was do-nothing anyway... */
5539 void SSL_set_security_level(SSL *s, int level)
5541 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5546 sc->cert->sec_level = level;
5549 int SSL_get_security_level(const SSL *s)
5551 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5556 return sc->cert->sec_level;
5559 void SSL_set_security_callback(SSL *s,
5560 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5561 int op, int bits, int nid,
5562 void *other, void *ex))
5564 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5569 sc->cert->sec_cb = cb;
5572 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5573 const SSL_CTX *ctx, int op,
5574 int bits, int nid, void *other,
5576 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5581 return sc->cert->sec_cb;
5584 void SSL_set0_security_ex_data(SSL *s, void *ex)
5586 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5591 sc->cert->sec_ex = ex;
5594 void *SSL_get0_security_ex_data(const SSL *s)
5596 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5601 return sc->cert->sec_ex;
5604 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5606 ctx->cert->sec_level = level;
5609 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5611 return ctx->cert->sec_level;
5614 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5615 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5616 int op, int bits, int nid,
5617 void *other, void *ex))
5619 ctx->cert->sec_cb = cb;
5622 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5628 return ctx->cert->sec_cb;
5631 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5633 ctx->cert->sec_ex = ex;
5636 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5638 return ctx->cert->sec_ex;
5641 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5643 return ctx->options;
5646 uint64_t SSL_get_options(const SSL *s)
5648 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5656 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5658 return ctx->options |= op;
5661 uint64_t SSL_set_options(SSL *s, uint64_t op)
5663 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5668 return sc->options |= op;
5671 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5673 return ctx->options &= ~op;
5676 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5678 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5683 return sc->options &= ~op;
5686 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5688 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5693 return sc->verified_chain;
5696 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5698 #ifndef OPENSSL_NO_CT
5701 * Moves SCTs from the |src| stack to the |dst| stack.
5702 * The source of each SCT will be set to |origin|.
5703 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5705 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5707 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5708 sct_source_t origin)
5714 *dst = sk_SCT_new_null();
5716 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5721 while ((sct = sk_SCT_pop(src)) != NULL) {
5722 if (SCT_set_source(sct, origin) != 1)
5725 if (sk_SCT_push(*dst, sct) <= 0)
5733 sk_SCT_push(src, sct); /* Put the SCT back */
5738 * Look for data collected during ServerHello and parse if found.
5739 * Returns the number of SCTs extracted.
5741 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5743 int scts_extracted = 0;
5745 if (s->ext.scts != NULL) {
5746 const unsigned char *p = s->ext.scts;
5747 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5749 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5751 SCT_LIST_free(scts);
5754 return scts_extracted;
5758 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5759 * contains an SCT X509 extension. They will be stored in |s->scts|.
5761 * - The number of SCTs extracted, assuming an OCSP response exists.
5762 * - 0 if no OCSP response exists or it contains no SCTs.
5763 * - A negative integer if an error occurs.
5765 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5767 # ifndef OPENSSL_NO_OCSP
5768 int scts_extracted = 0;
5769 const unsigned char *p;
5770 OCSP_BASICRESP *br = NULL;
5771 OCSP_RESPONSE *rsp = NULL;
5772 STACK_OF(SCT) *scts = NULL;
5775 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5778 p = s->ext.ocsp.resp;
5779 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5783 br = OCSP_response_get1_basic(rsp);
5787 for (i = 0; i < OCSP_resp_count(br); ++i) {
5788 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5794 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5796 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5797 if (scts_extracted < 0)
5801 SCT_LIST_free(scts);
5802 OCSP_BASICRESP_free(br);
5803 OCSP_RESPONSE_free(rsp);
5804 return scts_extracted;
5806 /* Behave as if no OCSP response exists */
5812 * Attempts to extract SCTs from the peer certificate.
5813 * Return the number of SCTs extracted, or a negative integer if an error
5816 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5818 int scts_extracted = 0;
5819 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5822 STACK_OF(SCT) *scts =
5823 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5826 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5828 SCT_LIST_free(scts);
5831 return scts_extracted;
5835 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5836 * response (if it exists) and X509v3 extensions in the certificate.
5837 * Returns NULL if an error occurs.
5839 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5841 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5846 if (!sc->scts_parsed) {
5847 if (ct_extract_tls_extension_scts(sc) < 0 ||
5848 ct_extract_ocsp_response_scts(sc) < 0 ||
5849 ct_extract_x509v3_extension_scts(sc) < 0)
5852 sc->scts_parsed = 1;
5859 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5860 const STACK_OF(SCT) *scts, void *unused_arg)
5865 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5866 const STACK_OF(SCT) *scts, void *unused_arg)
5868 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5871 for (i = 0; i < count; ++i) {
5872 SCT *sct = sk_SCT_value(scts, i);
5873 int status = SCT_get_validation_status(sct);
5875 if (status == SCT_VALIDATION_STATUS_VALID)
5878 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5882 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5885 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5891 * Since code exists that uses the custom extension handler for CT, look
5892 * for this and throw an error if they have already registered to use CT.
5894 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5895 TLSEXT_TYPE_signed_certificate_timestamp))
5897 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5901 if (callback != NULL) {
5903 * If we are validating CT, then we MUST accept SCTs served via OCSP
5905 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5909 sc->ct_validation_callback = callback;
5910 sc->ct_validation_callback_arg = arg;
5915 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5916 ssl_ct_validation_cb callback, void *arg)
5919 * Since code exists that uses the custom extension handler for CT, look for
5920 * this and throw an error if they have already registered to use CT.
5922 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5923 TLSEXT_TYPE_signed_certificate_timestamp))
5925 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5929 ctx->ct_validation_callback = callback;
5930 ctx->ct_validation_callback_arg = arg;
5934 int SSL_ct_is_enabled(const SSL *s)
5936 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5941 return sc->ct_validation_callback != NULL;
5944 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5946 return ctx->ct_validation_callback != NULL;
5949 int ssl_validate_ct(SSL_CONNECTION *s)
5952 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5954 SSL_DANE *dane = &s->dane;
5955 CT_POLICY_EVAL_CTX *ctx = NULL;
5956 const STACK_OF(SCT) *scts;
5959 * If no callback is set, the peer is anonymous, or its chain is invalid,
5960 * skip SCT validation - just return success. Applications that continue
5961 * handshakes without certificates, with unverified chains, or pinned leaf
5962 * certificates are outside the scope of the WebPKI and CT.
5964 * The above exclusions notwithstanding the vast majority of peers will
5965 * have rather ordinary certificate chains validated by typical
5966 * applications that perform certificate verification and therefore will
5967 * process SCTs when enabled.
5969 if (s->ct_validation_callback == NULL || cert == NULL ||
5970 s->verify_result != X509_V_OK ||
5971 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5975 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5976 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5978 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5979 switch (dane->mtlsa->usage) {
5980 case DANETLS_USAGE_DANE_TA:
5981 case DANETLS_USAGE_DANE_EE:
5986 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5987 SSL_CONNECTION_GET_CTX(s)->propq);
5989 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5993 issuer = sk_X509_value(s->verified_chain, 1);
5994 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5995 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5996 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
5997 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
5998 CT_POLICY_EVAL_CTX_set_time(
5999 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6001 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6004 * This function returns success (> 0) only when all the SCTs are valid, 0
6005 * when some are invalid, and < 0 on various internal errors (out of
6006 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6007 * reason to abort the handshake, that decision is up to the callback.
6008 * Therefore, we error out only in the unexpected case that the return
6009 * value is negative.
6011 * XXX: One might well argue that the return value of this function is an
6012 * unfortunate design choice. Its job is only to determine the validation
6013 * status of each of the provided SCTs. So long as it correctly separates
6014 * the wheat from the chaff it should return success. Failure in this case
6015 * ought to correspond to an inability to carry out its duties.
6017 if (SCT_LIST_validate(scts, ctx) < 0) {
6018 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6022 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6024 ret = 0; /* This function returns 0 on failure */
6026 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6029 CT_POLICY_EVAL_CTX_free(ctx);
6031 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6032 * failure return code here. Also the application may wish the complete
6033 * the handshake, and then disconnect cleanly at a higher layer, after
6034 * checking the verification status of the completed connection.
6036 * We therefore force a certificate verification failure which will be
6037 * visible via SSL_get_verify_result() and cached as part of any resumed
6040 * Note: the permissive callback is for information gathering only, always
6041 * returns success, and does not affect verification status. Only the
6042 * strict callback or a custom application-specified callback can trigger
6043 * connection failure or record a verification error.
6046 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6050 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6052 switch (validation_mode) {
6054 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6056 case SSL_CT_VALIDATION_PERMISSIVE:
6057 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6058 case SSL_CT_VALIDATION_STRICT:
6059 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6063 int SSL_enable_ct(SSL *s, int validation_mode)
6065 switch (validation_mode) {
6067 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6069 case SSL_CT_VALIDATION_PERMISSIVE:
6070 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6071 case SSL_CT_VALIDATION_STRICT:
6072 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6076 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6078 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6081 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6083 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6086 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6088 CTLOG_STORE_free(ctx->ctlog_store);
6089 ctx->ctlog_store = logs;
6092 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6094 return ctx->ctlog_store;
6097 #endif /* OPENSSL_NO_CT */
6099 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6102 c->client_hello_cb = cb;
6103 c->client_hello_cb_arg = arg;
6106 int SSL_client_hello_isv2(SSL *s)
6108 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6113 if (sc->clienthello == NULL)
6115 return sc->clienthello->isv2;
6118 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6120 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6125 if (sc->clienthello == NULL)
6127 return sc->clienthello->legacy_version;
6130 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6132 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6137 if (sc->clienthello == NULL)
6140 *out = sc->clienthello->random;
6141 return SSL3_RANDOM_SIZE;
6144 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6146 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6151 if (sc->clienthello == NULL)
6154 *out = sc->clienthello->session_id;
6155 return sc->clienthello->session_id_len;
6158 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6160 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6165 if (sc->clienthello == NULL)
6168 *out = PACKET_data(&sc->clienthello->ciphersuites);
6169 return PACKET_remaining(&sc->clienthello->ciphersuites);
6172 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6174 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6179 if (sc->clienthello == NULL)
6182 *out = sc->clienthello->compressions;
6183 return sc->clienthello->compressions_len;
6186 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6191 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6196 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6198 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6199 ext = sc->clienthello->pre_proc_exts + i;
6208 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6209 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6212 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6213 ext = sc->clienthello->pre_proc_exts + i;
6215 if (ext->received_order >= num)
6217 present[ext->received_order] = ext->type;
6224 OPENSSL_free(present);
6228 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6232 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6237 if (sc->clienthello == NULL || num_exts == NULL)
6239 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6240 ext = sc->clienthello->pre_proc_exts + i;
6252 if (*num_exts < num)
6254 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6255 ext = sc->clienthello->pre_proc_exts + i;
6257 if (ext->received_order >= num)
6259 exts[ext->received_order] = ext->type;
6266 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6271 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6276 if (sc->clienthello == NULL)
6278 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6279 r = sc->clienthello->pre_proc_exts + i;
6280 if (r->present && r->type == type) {
6282 *out = PACKET_data(&r->data);
6284 *outlen = PACKET_remaining(&r->data);
6291 int SSL_free_buffers(SSL *ssl)
6294 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6301 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6304 RECORD_LAYER_release(rl);
6308 int SSL_alloc_buffers(SSL *ssl)
6310 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6315 return ssl3_setup_buffers(sc);
6318 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6320 ctx->keylog_callback = cb;
6323 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6325 return ctx->keylog_callback;
6328 static int nss_keylog_int(const char *prefix,
6330 const uint8_t *parameter_1,
6331 size_t parameter_1_len,
6332 const uint8_t *parameter_2,
6333 size_t parameter_2_len)
6336 char *cursor = NULL;
6340 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6342 if (sctx->keylog_callback == NULL)
6346 * Our output buffer will contain the following strings, rendered with
6347 * space characters in between, terminated by a NULL character: first the
6348 * prefix, then the first parameter, then the second parameter. The
6349 * meaning of each parameter depends on the specific key material being
6350 * logged. Note that the first and second parameters are encoded in
6351 * hexadecimal, so we need a buffer that is twice their lengths.
6353 prefix_len = strlen(prefix);
6354 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6355 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6356 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6360 strcpy(cursor, prefix);
6361 cursor += prefix_len;
6364 for (i = 0; i < parameter_1_len; i++) {
6365 sprintf(cursor, "%02x", parameter_1[i]);
6370 for (i = 0; i < parameter_2_len; i++) {
6371 sprintf(cursor, "%02x", parameter_2[i]);
6376 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6377 OPENSSL_clear_free(out, out_len);
6382 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6383 const uint8_t *encrypted_premaster,
6384 size_t encrypted_premaster_len,
6385 const uint8_t *premaster,
6386 size_t premaster_len)
6388 if (encrypted_premaster_len < 8) {
6389 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6393 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6394 return nss_keylog_int("RSA",
6396 encrypted_premaster,
6402 int ssl_log_secret(SSL_CONNECTION *sc,
6404 const uint8_t *secret,
6407 return nss_keylog_int(label,
6409 sc->s3.client_random,
6415 #define SSLV2_CIPHER_LEN 3
6417 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6421 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6423 if (PACKET_remaining(cipher_suites) == 0) {
6424 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6428 if (PACKET_remaining(cipher_suites) % n != 0) {
6429 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6433 OPENSSL_free(s->s3.tmp.ciphers_raw);
6434 s->s3.tmp.ciphers_raw = NULL;
6435 s->s3.tmp.ciphers_rawlen = 0;
6438 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6439 PACKET sslv2ciphers = *cipher_suites;
6440 unsigned int leadbyte;
6444 * We store the raw ciphers list in SSLv3+ format so we need to do some
6445 * preprocessing to convert the list first. If there are any SSLv2 only
6446 * ciphersuites with a non-zero leading byte then we are going to
6447 * slightly over allocate because we won't store those. But that isn't a
6450 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6451 s->s3.tmp.ciphers_raw = raw;
6453 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6456 for (s->s3.tmp.ciphers_rawlen = 0;
6457 PACKET_remaining(&sslv2ciphers) > 0;
6458 raw += TLS_CIPHER_LEN) {
6459 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6461 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6464 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6465 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6466 OPENSSL_free(s->s3.tmp.ciphers_raw);
6467 s->s3.tmp.ciphers_raw = NULL;
6468 s->s3.tmp.ciphers_rawlen = 0;
6472 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6474 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6475 &s->s3.tmp.ciphers_rawlen)) {
6476 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6482 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6483 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6484 STACK_OF(SSL_CIPHER) **scsvs)
6487 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6492 if (!PACKET_buf_init(&pkt, bytes, len))
6494 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6497 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6498 STACK_OF(SSL_CIPHER) **skp,
6499 STACK_OF(SSL_CIPHER) **scsvs_out,
6500 int sslv2format, int fatal)
6502 const SSL_CIPHER *c;
6503 STACK_OF(SSL_CIPHER) *sk = NULL;
6504 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6506 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6507 unsigned char cipher[SSLV2_CIPHER_LEN];
6509 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6511 if (PACKET_remaining(cipher_suites) == 0) {
6513 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6515 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6519 if (PACKET_remaining(cipher_suites) % n != 0) {
6521 SSLfatal(s, SSL_AD_DECODE_ERROR,
6522 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6524 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6528 sk = sk_SSL_CIPHER_new_null();
6529 scsvs = sk_SSL_CIPHER_new_null();
6530 if (sk == NULL || scsvs == NULL) {
6532 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6534 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6538 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6540 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6541 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6542 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6544 if (sslv2format && cipher[0] != '\0')
6547 /* For SSLv2-compat, ignore leading 0-byte. */
6548 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6550 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6551 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6553 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6555 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6560 if (PACKET_remaining(cipher_suites) > 0) {
6562 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6564 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6571 sk_SSL_CIPHER_free(sk);
6572 if (scsvs_out != NULL)
6575 sk_SSL_CIPHER_free(scsvs);
6578 sk_SSL_CIPHER_free(sk);
6579 sk_SSL_CIPHER_free(scsvs);
6583 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6585 ctx->max_early_data = max_early_data;
6590 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6592 return ctx->max_early_data;
6595 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6597 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6602 sc->max_early_data = max_early_data;
6607 uint32_t SSL_get_max_early_data(const SSL *s)
6609 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6614 return sc->max_early_data;
6617 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6619 ctx->recv_max_early_data = recv_max_early_data;
6624 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6626 return ctx->recv_max_early_data;
6629 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6631 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6636 sc->recv_max_early_data = recv_max_early_data;
6641 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6643 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6648 return sc->recv_max_early_data;
6651 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6653 /* Return any active Max Fragment Len extension */
6654 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6655 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6657 /* return current SSL connection setting */
6658 return sc->max_send_fragment;
6661 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6663 /* Return a value regarding an active Max Fragment Len extension */
6664 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6665 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6666 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6668 /* else limit |split_send_fragment| to current |max_send_fragment| */
6669 if (sc->split_send_fragment > sc->max_send_fragment)
6670 return sc->max_send_fragment;
6672 /* return current SSL connection setting */
6673 return sc->split_send_fragment;
6676 int SSL_stateless(SSL *s)
6679 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6681 /* TODO(QUIC): This will need further work. */
6685 /* Ensure there is no state left over from a previous invocation */
6691 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6692 ret = SSL_accept(s);
6693 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6695 if (ret > 0 && sc->ext.cookieok)
6698 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6704 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6706 ctx->pha_enabled = val;
6709 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6711 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6716 sc->pha_enabled = val;
6719 int SSL_verify_client_post_handshake(SSL *ssl)
6721 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6726 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6727 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6731 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6735 if (!SSL_is_init_finished(ssl)) {
6736 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6740 switch (sc->post_handshake_auth) {
6742 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6745 case SSL_PHA_EXT_SENT:
6746 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6748 case SSL_PHA_EXT_RECEIVED:
6750 case SSL_PHA_REQUEST_PENDING:
6751 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6753 case SSL_PHA_REQUESTED:
6754 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6758 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6760 /* checks verify_mode and algorithm_auth */
6761 if (!send_certificate_request(sc)) {
6762 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6763 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6767 ossl_statem_set_in_init(sc, 1);
6771 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6772 SSL_CTX_generate_session_ticket_fn gen_cb,
6773 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6776 ctx->generate_ticket_cb = gen_cb;
6777 ctx->decrypt_ticket_cb = dec_cb;
6778 ctx->ticket_cb_data = arg;
6782 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6783 SSL_allow_early_data_cb_fn cb,
6786 ctx->allow_early_data_cb = cb;
6787 ctx->allow_early_data_cb_data = arg;
6790 void SSL_set_allow_early_data_cb(SSL *s,
6791 SSL_allow_early_data_cb_fn cb,
6794 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6799 sc->allow_early_data_cb = cb;
6800 sc->allow_early_data_cb_data = arg;
6803 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6805 const char *properties)
6807 const EVP_CIPHER *ciph;
6809 ciph = tls_get_cipher_from_engine(nid);
6814 * If there is no engine cipher then we do an explicit fetch. This may fail
6815 * and that could be ok
6818 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6824 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6826 /* Don't up-ref an implicit EVP_CIPHER */
6827 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6831 * The cipher was explicitly fetched and therefore it is safe to cast
6834 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6837 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6842 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6844 * The cipher was explicitly fetched and therefore it is safe to cast
6847 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6851 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6853 const char *properties)
6857 md = tls_get_digest_from_engine(nid);
6861 /* Otherwise we do an explicit fetch */
6863 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6868 int ssl_evp_md_up_ref(const EVP_MD *md)
6870 /* Don't up-ref an implicit EVP_MD */
6871 if (EVP_MD_get0_provider(md) == NULL)
6875 * The digest was explicitly fetched and therefore it is safe to cast
6878 return EVP_MD_up_ref((EVP_MD *)md);
6881 void ssl_evp_md_free(const EVP_MD *md)
6886 if (EVP_MD_get0_provider(md) != NULL) {
6888 * The digest was explicitly fetched and therefore it is safe to cast
6891 EVP_MD_free((EVP_MD *)md);
6895 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6897 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6902 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6903 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6904 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6907 EVP_PKEY_free(sc->cert->dh_tmp);
6908 sc->cert->dh_tmp = dhpkey;
6912 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6914 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6915 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6916 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6919 EVP_PKEY_free(ctx->cert->dh_tmp);
6920 ctx->cert->dh_tmp = dhpkey;