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,
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 if (s->max_pipelines > 1)
816 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
817 if (ctx->default_read_buf_len > 0)
818 SSL_set_default_read_buffer_len(ssl, ctx->default_read_buf_len);
821 s->ext.debug_arg = NULL;
822 s->ext.ticket_expected = 0;
823 s->ext.status_type = ctx->ext.status_type;
824 s->ext.status_expected = 0;
825 s->ext.ocsp.ids = NULL;
826 s->ext.ocsp.exts = NULL;
827 s->ext.ocsp.resp = NULL;
828 s->ext.ocsp.resp_len = 0;
830 s->session_ctx = ctx;
831 if (ctx->ext.ecpointformats) {
832 s->ext.ecpointformats =
833 OPENSSL_memdup(ctx->ext.ecpointformats,
834 ctx->ext.ecpointformats_len);
835 if (!s->ext.ecpointformats) {
836 s->ext.ecpointformats_len = 0;
839 s->ext.ecpointformats_len =
840 ctx->ext.ecpointformats_len;
842 if (ctx->ext.supportedgroups) {
843 s->ext.supportedgroups =
844 OPENSSL_memdup(ctx->ext.supportedgroups,
845 ctx->ext.supportedgroups_len
846 * sizeof(*ctx->ext.supportedgroups));
847 if (!s->ext.supportedgroups) {
848 s->ext.supportedgroups_len = 0;
851 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
854 #ifndef OPENSSL_NO_NEXTPROTONEG
858 if (ctx->ext.alpn != NULL) {
859 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
860 if (s->ext.alpn == NULL) {
864 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
865 s->ext.alpn_len = ctx->ext.alpn_len;
868 s->verified_chain = NULL;
869 s->verify_result = X509_V_OK;
871 s->default_passwd_callback = ctx->default_passwd_callback;
872 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
874 s->key_update = SSL_KEY_UPDATE_NONE;
876 s->allow_early_data_cb = ctx->allow_early_data_cb;
877 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
879 if (!ssl->method->ssl_init(ssl))
882 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
887 #ifndef OPENSSL_NO_PSK
888 s->psk_client_callback = ctx->psk_client_callback;
889 s->psk_server_callback = ctx->psk_server_callback;
891 s->psk_find_session_cb = ctx->psk_find_session_cb;
892 s->psk_use_session_cb = ctx->psk_use_session_cb;
894 s->async_cb = ctx->async_cb;
895 s->async_cb_arg = ctx->async_cb_arg;
899 #ifndef OPENSSL_NO_CT
900 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
901 ctx->ct_validation_callback_arg))
908 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
912 int SSL_is_dtls(const SSL *s)
914 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
922 int SSL_up_ref(SSL *s)
926 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
929 REF_PRINT_COUNT("SSL", s);
930 REF_ASSERT_ISNT(i < 2);
931 return ((i > 1) ? 1 : 0);
934 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
935 unsigned int sid_ctx_len)
937 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
938 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
941 ctx->sid_ctx_length = sid_ctx_len;
942 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
947 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
948 unsigned int sid_ctx_len)
950 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
955 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
956 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
959 sc->sid_ctx_length = sid_ctx_len;
960 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
965 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
967 if (!CRYPTO_THREAD_write_lock(ctx->lock))
969 ctx->generate_session_id = cb;
970 CRYPTO_THREAD_unlock(ctx->lock);
974 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
976 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
978 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
980 sc->generate_session_id = cb;
981 CRYPTO_THREAD_unlock(ssl->lock);
985 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
989 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
990 * we can "construct" a session to give us the desired check - i.e. to
991 * find if there's a session in the hash table that would conflict with
992 * any new session built out of this id/id_len and the ssl_version in use
996 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
998 if (sc == NULL || id_len > sizeof(r.session_id))
1001 r.ssl_version = sc->version;
1002 r.session_id_length = id_len;
1003 memcpy(r.session_id, id, id_len);
1005 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1007 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1008 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1012 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1014 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1017 int SSL_set_purpose(SSL *s, int purpose)
1019 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1024 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1027 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1029 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1032 int SSL_set_trust(SSL *s, int trust)
1034 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1039 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1042 int SSL_set1_host(SSL *s, const char *hostname)
1044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1049 /* If a hostname is provided and parses as an IP address,
1050 * treat it as such. */
1051 if (hostname != NULL
1052 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1055 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1058 int SSL_add1_host(SSL *s, const char *hostname)
1060 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1065 /* If a hostname is provided and parses as an IP address,
1066 * treat it as such. */
1069 ASN1_OCTET_STRING *ip;
1072 ip = a2i_IPADDRESS(hostname);
1074 /* We didn't want it; only to check if it *is* an IP address */
1075 ASN1_OCTET_STRING_free(ip);
1077 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1080 OPENSSL_free(old_ip);
1081 /* There can be only one IP address */
1085 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1089 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1092 void SSL_set_hostflags(SSL *s, unsigned int flags)
1094 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1099 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1102 const char *SSL_get0_peername(SSL *s)
1104 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1109 return X509_VERIFY_PARAM_get0_peername(sc->param);
1112 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1114 return dane_ctx_enable(&ctx->dane);
1117 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1119 unsigned long orig = ctx->dane.flags;
1121 ctx->dane.flags |= flags;
1125 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1127 unsigned long orig = ctx->dane.flags;
1129 ctx->dane.flags &= ~flags;
1133 int SSL_dane_enable(SSL *s, const char *basedomain)
1136 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1142 if (s->ctx->dane.mdmax == 0) {
1143 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1146 if (dane->trecs != NULL) {
1147 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1152 * Default SNI name. This rejects empty names, while set1_host below
1153 * accepts them and disables host name checks. To avoid side-effects with
1154 * invalid input, set the SNI name first.
1156 if (sc->ext.hostname == NULL) {
1157 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1158 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1163 /* Primary RFC6125 reference identifier */
1164 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1165 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1171 dane->dctx = &s->ctx->dane;
1172 dane->trecs = sk_danetls_record_new_null();
1174 if (dane->trecs == NULL) {
1175 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1181 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1184 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1189 orig = sc->dane.flags;
1191 sc->dane.flags |= flags;
1195 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1198 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1203 orig = sc->dane.flags;
1205 sc->dane.flags &= ~flags;
1209 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1212 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1219 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1223 *mcert = dane->mcert;
1225 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1230 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1231 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1234 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1241 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1245 *usage = dane->mtlsa->usage;
1247 *selector = dane->mtlsa->selector;
1249 *mtype = dane->mtlsa->mtype;
1251 *data = dane->mtlsa->data;
1253 *dlen = dane->mtlsa->dlen;
1258 SSL_DANE *SSL_get0_dane(SSL *s)
1260 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1268 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1269 uint8_t mtype, const unsigned char *data, size_t dlen)
1271 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1276 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1279 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1282 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1285 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1287 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1290 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1292 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1297 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1300 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1305 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1307 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1315 void SSL_certs_clear(SSL *s)
1317 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1322 ssl_cert_clear_certs(sc->cert);
1325 void SSL_free(SSL *s)
1331 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1332 REF_PRINT_COUNT("SSL", s);
1335 REF_ASSERT_ISNT(i < 0);
1337 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1339 if (s->method != NULL)
1340 s->method->ssl_free(s);
1342 SSL_CTX_free(s->ctx);
1343 CRYPTO_THREAD_lock_free(s->lock);
1348 void ossl_ssl_connection_free(SSL *ssl)
1352 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1356 if (s->rrlmethod != NULL)
1357 s->rrlmethod->free(s->rrl); /* Ignore return value */
1358 BIO_free(s->rrlnext);
1360 X509_VERIFY_PARAM_free(s->param);
1361 dane_final(&s->dane);
1363 RECORD_LAYER_release(&s->rlayer);
1365 /* Ignore return value */
1366 ssl_free_wbio_buffer(s);
1368 BIO_free_all(s->wbio);
1370 BIO_free_all(s->rbio);
1373 BUF_MEM_free(s->init_buf);
1375 /* add extra stuff */
1376 sk_SSL_CIPHER_free(s->cipher_list);
1377 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1378 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1379 sk_SSL_CIPHER_free(s->peer_ciphers);
1381 /* Make the next call work :-) */
1382 if (s->session != NULL) {
1383 ssl_clear_bad_session(s);
1384 SSL_SESSION_free(s->session);
1386 SSL_SESSION_free(s->psksession);
1387 OPENSSL_free(s->psksession_id);
1391 ssl_cert_free(s->cert);
1392 OPENSSL_free(s->shared_sigalgs);
1393 /* Free up if allocated */
1395 OPENSSL_free(s->ext.hostname);
1396 SSL_CTX_free(s->session_ctx);
1397 OPENSSL_free(s->ext.ecpointformats);
1398 OPENSSL_free(s->ext.peer_ecpointformats);
1399 OPENSSL_free(s->ext.supportedgroups);
1400 OPENSSL_free(s->ext.peer_supportedgroups);
1401 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1402 #ifndef OPENSSL_NO_OCSP
1403 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1405 #ifndef OPENSSL_NO_CT
1406 SCT_LIST_free(s->scts);
1407 OPENSSL_free(s->ext.scts);
1409 OPENSSL_free(s->ext.ocsp.resp);
1410 OPENSSL_free(s->ext.alpn);
1411 OPENSSL_free(s->ext.tls13_cookie);
1412 if (s->clienthello != NULL)
1413 OPENSSL_free(s->clienthello->pre_proc_exts);
1414 OPENSSL_free(s->clienthello);
1415 OPENSSL_free(s->pha_context);
1416 EVP_MD_CTX_free(s->pha_dgst);
1418 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1419 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1421 OSSL_STACK_OF_X509_free(s->verified_chain);
1423 if (ssl->method != NULL)
1424 ssl->method->ssl_deinit(ssl);
1426 ASYNC_WAIT_CTX_free(s->waitctx);
1428 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1429 OPENSSL_free(s->ext.npn);
1432 #ifndef OPENSSL_NO_SRTP
1433 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1437 void SSL_set0_rbio(SSL *s, BIO *rbio)
1439 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1444 BIO_free_all(sc->rbio);
1446 sc->rrlmethod->set1_bio(sc->rrl, sc->rbio);
1449 void SSL_set0_wbio(SSL *s, BIO *wbio)
1451 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1457 * If the output buffering BIO is still in place, remove it
1459 if (sc->bbio != NULL)
1460 sc->wbio = BIO_pop(sc->wbio);
1462 BIO_free_all(sc->wbio);
1465 /* Re-attach |bbio| to the new |wbio|. */
1466 if (sc->bbio != NULL)
1467 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1470 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1473 * For historical reasons, this function has many different cases in
1474 * ownership handling.
1477 /* If nothing has changed, do nothing */
1478 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1482 * If the two arguments are equal then one fewer reference is granted by the
1483 * caller than we want to take
1485 if (rbio != NULL && rbio == wbio)
1489 * If only the wbio is changed only adopt one reference.
1491 if (rbio == SSL_get_rbio(s)) {
1492 SSL_set0_wbio(s, wbio);
1496 * There is an asymmetry here for historical reasons. If only the rbio is
1497 * changed AND the rbio and wbio were originally different, then we only
1498 * adopt one reference.
1500 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1501 SSL_set0_rbio(s, rbio);
1505 /* Otherwise, adopt both references. */
1506 SSL_set0_rbio(s, rbio);
1507 SSL_set0_wbio(s, wbio);
1510 BIO *SSL_get_rbio(const SSL *s)
1512 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1520 BIO *SSL_get_wbio(const SSL *s)
1522 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1527 if (sc->bbio != NULL) {
1529 * If |bbio| is active, the true caller-configured BIO is its
1532 return BIO_next(sc->bbio);
1537 int SSL_get_fd(const SSL *s)
1539 return SSL_get_rfd(s);
1542 int SSL_get_rfd(const SSL *s)
1547 b = SSL_get_rbio(s);
1548 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1550 BIO_get_fd(r, &ret);
1554 int SSL_get_wfd(const SSL *s)
1559 b = SSL_get_wbio(s);
1560 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1562 BIO_get_fd(r, &ret);
1566 #ifndef OPENSSL_NO_SOCK
1567 int SSL_set_fd(SSL *s, int fd)
1572 bio = BIO_new(BIO_s_socket());
1575 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1578 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1579 SSL_set_bio(s, bio, bio);
1580 #ifndef OPENSSL_NO_KTLS
1582 * The new socket is created successfully regardless of ktls_enable.
1583 * ktls_enable doesn't change any functionality of the socket, except
1584 * changing the setsockopt to enable the processing of ktls_start.
1585 * Thus, it is not a problem to call it for non-TLS sockets.
1588 #endif /* OPENSSL_NO_KTLS */
1594 int SSL_set_wfd(SSL *s, int fd)
1596 BIO *rbio = SSL_get_rbio(s);
1598 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1599 || (int)BIO_get_fd(rbio, NULL) != fd) {
1600 BIO *bio = BIO_new(BIO_s_socket());
1603 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1606 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1607 SSL_set0_wbio(s, bio);
1608 #ifndef OPENSSL_NO_KTLS
1610 * The new socket is created successfully regardless of ktls_enable.
1611 * ktls_enable doesn't change any functionality of the socket, except
1612 * changing the setsockopt to enable the processing of ktls_start.
1613 * Thus, it is not a problem to call it for non-TLS sockets.
1616 #endif /* OPENSSL_NO_KTLS */
1619 SSL_set0_wbio(s, rbio);
1624 int SSL_set_rfd(SSL *s, int fd)
1626 BIO *wbio = SSL_get_wbio(s);
1628 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1629 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1630 BIO *bio = BIO_new(BIO_s_socket());
1633 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1636 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1637 SSL_set0_rbio(s, bio);
1640 SSL_set0_rbio(s, wbio);
1647 /* return length of latest Finished message we sent, copy to 'buf' */
1648 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1651 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1656 ret = sc->s3.tmp.finish_md_len;
1659 memcpy(buf, sc->s3.tmp.finish_md, count);
1663 /* return length of latest Finished message we expected, copy to 'buf' */
1664 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1667 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1672 ret = sc->s3.tmp.peer_finish_md_len;
1675 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1679 int SSL_get_verify_mode(const SSL *s)
1681 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1686 return sc->verify_mode;
1689 int SSL_get_verify_depth(const SSL *s)
1691 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1696 return X509_VERIFY_PARAM_get_depth(sc->param);
1699 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1700 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1705 return sc->verify_callback;
1708 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1710 return ctx->verify_mode;
1713 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1715 return X509_VERIFY_PARAM_get_depth(ctx->param);
1718 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1719 return ctx->default_verify_callback;
1722 void SSL_set_verify(SSL *s, int mode,
1723 int (*callback) (int ok, X509_STORE_CTX *ctx))
1725 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1730 sc->verify_mode = mode;
1731 if (callback != NULL)
1732 sc->verify_callback = callback;
1735 void SSL_set_verify_depth(SSL *s, int depth)
1737 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1742 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1745 void SSL_set_read_ahead(SSL *s, int yes)
1747 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1752 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1755 int SSL_get_read_ahead(const SSL *s)
1757 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1762 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1765 int SSL_pending(const SSL *s)
1767 size_t pending = s->method->ssl_pending(s);
1770 * SSL_pending cannot work properly if read-ahead is enabled
1771 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1772 * impossible to fix since SSL_pending cannot report errors that may be
1773 * observed while scanning the new data. (Note that SSL_pending() is
1774 * often used as a boolean value, so we'd better not return -1.)
1776 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1777 * we just return INT_MAX.
1779 return pending < INT_MAX ? (int)pending : INT_MAX;
1782 int SSL_has_pending(const SSL *s)
1785 * Similar to SSL_pending() but returns a 1 to indicate that we have
1786 * processed or unprocessed data available or 0 otherwise (as opposed to the
1787 * number of bytes available). Unlike SSL_pending() this will take into
1788 * account read_ahead data. A 1 return simply indicates that we have data.
1789 * That data may not result in any application data, or we may fail to parse
1790 * the records for some reason.
1792 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1794 /* Check buffered app data if any first */
1795 if (SSL_CONNECTION_IS_DTLS(sc)) {
1796 DTLS1_RECORD_DATA *rdata;
1799 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1800 while ((item = pqueue_next(&iter)) != NULL) {
1802 if (rdata->rrec.length > 0)
1807 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1810 return RECORD_LAYER_read_pending(&sc->rlayer);
1813 X509 *SSL_get1_peer_certificate(const SSL *s)
1815 X509 *r = SSL_get0_peer_certificate(s);
1823 X509 *SSL_get0_peer_certificate(const SSL *s)
1825 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1830 if (sc->session == NULL)
1833 return sc->session->peer;
1836 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1839 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1844 if (sc->session == NULL)
1847 r = sc->session->peer_chain;
1850 * If we are a client, cert_chain includes the peer's own certificate; if
1851 * we are a server, it does not.
1858 * Now in theory, since the calling process own 't' it should be safe to
1859 * modify. We need to be able to read f without being hassled
1861 int SSL_copy_session_id(SSL *t, const SSL *f)
1864 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1865 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1866 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1868 if (tsc == NULL || fsc == NULL)
1871 /* Do we need to do SSL locking? */
1872 if (!SSL_set_session(t, SSL_get_session(f))) {
1877 * what if we are setup for one protocol version but want to talk another
1879 if (t->method != f->method) {
1880 t->method->ssl_deinit(t);
1881 t->method = f->method;
1882 if (t->method->ssl_init(t) == 0)
1886 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1887 ssl_cert_free(tsc->cert);
1888 tsc->cert = fsc->cert;
1889 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1896 /* Fix this so it checks all the valid key/cert options */
1897 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1899 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1900 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1903 if (ctx->cert->key->privatekey == NULL) {
1904 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1907 return X509_check_private_key
1908 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1911 /* Fix this function so that it takes an optional type parameter */
1912 int SSL_check_private_key(const SSL *ssl)
1914 const SSL_CONNECTION *sc;
1916 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1917 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1920 if (sc->cert->key->x509 == NULL) {
1921 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1924 if (sc->cert->key->privatekey == NULL) {
1925 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1928 return X509_check_private_key(sc->cert->key->x509,
1929 sc->cert->key->privatekey);
1932 int SSL_waiting_for_async(SSL *s)
1934 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1945 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1947 ASYNC_WAIT_CTX *ctx;
1948 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1953 if ((ctx = sc->waitctx) == NULL)
1955 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1958 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1959 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1961 ASYNC_WAIT_CTX *ctx;
1962 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1967 if ((ctx = sc->waitctx) == NULL)
1969 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1973 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1975 ctx->async_cb = callback;
1979 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1981 ctx->async_cb_arg = arg;
1985 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1987 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1992 sc->async_cb = callback;
1996 int SSL_set_async_callback_arg(SSL *s, void *arg)
1998 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2003 sc->async_cb_arg = arg;
2007 int SSL_get_async_status(SSL *s, int *status)
2009 ASYNC_WAIT_CTX *ctx;
2010 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2015 if ((ctx = sc->waitctx) == NULL)
2017 *status = ASYNC_WAIT_CTX_get_status(ctx);
2021 int SSL_accept(SSL *s)
2023 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2028 if (sc->handshake_func == NULL) {
2029 /* Not properly initialized yet */
2030 SSL_set_accept_state(s);
2033 return SSL_do_handshake(s);
2036 int SSL_connect(SSL *s)
2038 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2043 if (sc->handshake_func == NULL) {
2044 /* Not properly initialized yet */
2045 SSL_set_connect_state(s);
2048 return SSL_do_handshake(s);
2051 long SSL_get_default_timeout(const SSL *s)
2053 return s->method->get_timeout();
2056 static int ssl_async_wait_ctx_cb(void *arg)
2058 SSL *s = (SSL *)arg;
2059 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2064 return sc->async_cb(s, sc->async_cb_arg);
2067 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2068 int (*func) (void *))
2071 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2076 if (sc->waitctx == NULL) {
2077 sc->waitctx = ASYNC_WAIT_CTX_new();
2078 if (sc->waitctx == NULL)
2080 if (sc->async_cb != NULL
2081 && !ASYNC_WAIT_CTX_set_callback
2082 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2086 sc->rwstate = SSL_NOTHING;
2087 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2088 sizeof(struct ssl_async_args))) {
2090 sc->rwstate = SSL_NOTHING;
2091 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2094 sc->rwstate = SSL_ASYNC_PAUSED;
2097 sc->rwstate = SSL_ASYNC_NO_JOBS;
2103 sc->rwstate = SSL_NOTHING;
2104 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2105 /* Shouldn't happen */
2110 static int ssl_io_intern(void *vargs)
2112 struct ssl_async_args *args;
2118 args = (struct ssl_async_args *)vargs;
2122 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2125 switch (args->type) {
2127 return args->f.func_read(s, buf, num, &sc->asyncrw);
2129 return args->f.func_write(s, buf, num, &sc->asyncrw);
2131 return args->f.func_other(s);
2136 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2138 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2143 if (sc->handshake_func == NULL) {
2144 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2148 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2149 sc->rwstate = SSL_NOTHING;
2153 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2154 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2155 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2159 * If we are a client and haven't received the ServerHello etc then we
2162 ossl_statem_check_finish_init(sc, 0);
2164 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2165 struct ssl_async_args args;
2171 args.type = READFUNC;
2172 args.f.func_read = s->method->ssl_read;
2174 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2175 *readbytes = sc->asyncrw;
2178 return s->method->ssl_read(s, buf, num, readbytes);
2182 int SSL_read(SSL *s, void *buf, int num)
2188 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2192 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2195 * The cast is safe here because ret should be <= INT_MAX because num is
2199 ret = (int)readbytes;
2204 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2206 int ret = ssl_read_internal(s, buf, num, readbytes);
2213 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2216 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2218 /* TODO(QUIC): This will need special handling for QUIC */
2223 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2224 return SSL_READ_EARLY_DATA_ERROR;
2227 switch (sc->early_data_state) {
2228 case SSL_EARLY_DATA_NONE:
2229 if (!SSL_in_before(s)) {
2230 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2231 return SSL_READ_EARLY_DATA_ERROR;
2235 case SSL_EARLY_DATA_ACCEPT_RETRY:
2236 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2237 ret = SSL_accept(s);
2240 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2241 return SSL_READ_EARLY_DATA_ERROR;
2245 case SSL_EARLY_DATA_READ_RETRY:
2246 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2247 sc->early_data_state = SSL_EARLY_DATA_READING;
2248 ret = SSL_read_ex(s, buf, num, readbytes);
2250 * State machine will update early_data_state to
2251 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2254 if (ret > 0 || (ret <= 0 && sc->early_data_state
2255 != SSL_EARLY_DATA_FINISHED_READING)) {
2256 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2257 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2258 : SSL_READ_EARLY_DATA_ERROR;
2261 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2264 return SSL_READ_EARLY_DATA_FINISH;
2267 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2268 return SSL_READ_EARLY_DATA_ERROR;
2272 int SSL_get_early_data_status(const SSL *s)
2274 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2276 /* TODO(QUIC): This will need special handling for QUIC */
2280 return sc->ext.early_data;
2283 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2285 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2290 if (sc->handshake_func == NULL) {
2291 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2295 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2298 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2299 struct ssl_async_args args;
2305 args.type = READFUNC;
2306 args.f.func_read = s->method->ssl_peek;
2308 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2309 *readbytes = sc->asyncrw;
2312 return s->method->ssl_peek(s, buf, num, readbytes);
2316 int SSL_peek(SSL *s, void *buf, int num)
2322 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2326 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2329 * The cast is safe here because ret should be <= INT_MAX because num is
2333 ret = (int)readbytes;
2339 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2341 int ret = ssl_peek_internal(s, buf, num, readbytes);
2348 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2350 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2355 if (sc->handshake_func == NULL) {
2356 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2360 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2361 sc->rwstate = SSL_NOTHING;
2362 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2366 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2367 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2368 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2369 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2372 /* If we are a client and haven't sent the Finished we better do that */
2373 ossl_statem_check_finish_init(sc, 1);
2375 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2377 struct ssl_async_args args;
2380 args.buf = (void *)buf;
2382 args.type = WRITEFUNC;
2383 args.f.func_write = s->method->ssl_write;
2385 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2386 *written = sc->asyncrw;
2389 return s->method->ssl_write(s, buf, num, written);
2393 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2396 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2401 if (sc->handshake_func == NULL) {
2402 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2406 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2407 sc->rwstate = SSL_NOTHING;
2408 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2412 if (!BIO_get_ktls_send(sc->wbio)) {
2413 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2417 /* If we have an alert to send, lets send it */
2418 if (sc->s3.alert_dispatch) {
2419 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2421 /* SSLfatal() already called if appropriate */
2424 /* if it went, fall through and send more stuff */
2427 sc->rwstate = SSL_WRITING;
2428 if (BIO_flush(sc->wbio) <= 0) {
2429 if (!BIO_should_retry(sc->wbio)) {
2430 sc->rwstate = SSL_NOTHING;
2433 set_sys_error(EAGAIN);
2439 #ifdef OPENSSL_NO_KTLS
2440 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2441 "can't call ktls_sendfile(), ktls disabled");
2444 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2446 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2447 if ((get_last_sys_error() == EAGAIN) ||
2448 (get_last_sys_error() == EINTR) ||
2449 (get_last_sys_error() == EBUSY))
2450 BIO_set_retry_write(sc->wbio);
2453 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2456 sc->rwstate = SSL_NOTHING;
2461 int SSL_write(SSL *s, const void *buf, int num)
2467 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2471 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2474 * The cast is safe here because ret should be <= INT_MAX because num is
2483 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2485 int ret = ssl_write_internal(s, buf, num, written);
2492 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2494 int ret, early_data_state;
2496 uint32_t partialwrite;
2497 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2499 /* TODO(QUIC): This will need special handling for QUIC */
2503 switch (sc->early_data_state) {
2504 case SSL_EARLY_DATA_NONE:
2506 || !SSL_in_before(s)
2507 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2508 && (sc->psk_use_session_cb == NULL))) {
2509 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2514 case SSL_EARLY_DATA_CONNECT_RETRY:
2515 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2516 ret = SSL_connect(s);
2519 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2524 case SSL_EARLY_DATA_WRITE_RETRY:
2525 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2527 * We disable partial write for early data because we don't keep track
2528 * of how many bytes we've written between the SSL_write_ex() call and
2529 * the flush if the flush needs to be retried)
2531 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2532 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2533 ret = SSL_write_ex(s, buf, num, &writtmp);
2534 sc->mode |= partialwrite;
2536 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2539 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2542 case SSL_EARLY_DATA_WRITE_FLUSH:
2543 /* The buffering BIO is still in place so we need to flush it */
2544 if (statem_flush(sc) != 1)
2547 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2550 case SSL_EARLY_DATA_FINISHED_READING:
2551 case SSL_EARLY_DATA_READ_RETRY:
2552 early_data_state = sc->early_data_state;
2553 /* We are a server writing to an unauthenticated client */
2554 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2555 ret = SSL_write_ex(s, buf, num, written);
2556 /* The buffering BIO is still in place */
2558 (void)BIO_flush(sc->wbio);
2559 sc->early_data_state = early_data_state;
2563 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2568 int SSL_shutdown(SSL *s)
2571 * Note that this function behaves differently from what one might
2572 * expect. Return values are 0 for no success (yet), 1 for success; but
2573 * calling it once is usually not enough, even if blocking I/O is used
2574 * (see ssl3_shutdown).
2576 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2581 if (sc->handshake_func == NULL) {
2582 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2586 if (!SSL_in_init(s)) {
2587 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2588 struct ssl_async_args args;
2590 memset(&args, 0, sizeof(args));
2592 args.type = OTHERFUNC;
2593 args.f.func_other = s->method->ssl_shutdown;
2595 return ssl_start_async_job(s, &args, ssl_io_intern);
2597 return s->method->ssl_shutdown(s);
2600 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2605 int SSL_key_update(SSL *s, int updatetype)
2607 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2612 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2613 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2617 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2618 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2619 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2623 if (!SSL_is_init_finished(s)) {
2624 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2628 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2629 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2633 ossl_statem_set_in_init(sc, 1);
2634 sc->key_update = updatetype;
2638 int SSL_get_key_update_type(const SSL *s)
2640 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2645 return sc->key_update;
2649 * Can we accept a renegotiation request? If yes, set the flag and
2650 * return 1 if yes. If not, raise error and return 0.
2652 static int can_renegotiate(const SSL_CONNECTION *sc)
2654 if (SSL_CONNECTION_IS_TLS13(sc)) {
2655 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2659 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2660 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2667 int SSL_renegotiate(SSL *s)
2669 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2674 if (!can_renegotiate(sc))
2677 sc->renegotiate = 1;
2678 sc->new_session = 1;
2679 return s->method->ssl_renegotiate(s);
2682 int SSL_renegotiate_abbreviated(SSL *s)
2684 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2689 if (!can_renegotiate(sc))
2692 sc->renegotiate = 1;
2693 sc->new_session = 0;
2694 return s->method->ssl_renegotiate(s);
2697 int SSL_renegotiate_pending(const SSL *s)
2699 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2705 * becomes true when negotiation is requested; false again once a
2706 * handshake has finished
2708 return (sc->renegotiate != 0);
2711 int SSL_new_session_ticket(SSL *s)
2713 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2718 /* If we are in init because we're sending tickets, okay to send more. */
2719 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2720 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2721 || !SSL_CONNECTION_IS_TLS13(sc))
2723 sc->ext.extra_tickets_expected++;
2724 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2725 ossl_statem_set_in_init(sc, 1);
2729 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2732 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2734 /* TODO(QUIC): Special handling for some ctrls will be needed */
2739 case SSL_CTRL_GET_READ_AHEAD:
2740 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2741 case SSL_CTRL_SET_READ_AHEAD:
2742 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2743 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2746 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2747 sc->msg_callback_arg = parg;
2751 return (sc->mode |= larg);
2752 case SSL_CTRL_CLEAR_MODE:
2753 return (sc->mode &= ~larg);
2754 case SSL_CTRL_GET_MAX_CERT_LIST:
2755 return (long)sc->max_cert_list;
2756 case SSL_CTRL_SET_MAX_CERT_LIST:
2759 l = (long)sc->max_cert_list;
2760 sc->max_cert_list = (size_t)larg;
2762 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2763 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2765 #ifndef OPENSSL_NO_KTLS
2766 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2768 #endif /* OPENSSL_NO_KTLS */
2769 sc->max_send_fragment = larg;
2770 if (sc->max_send_fragment < sc->split_send_fragment)
2771 sc->split_send_fragment = sc->max_send_fragment;
2773 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2774 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2776 sc->split_send_fragment = larg;
2778 case SSL_CTRL_SET_MAX_PIPELINES:
2779 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2781 sc->max_pipelines = larg;
2783 RECORD_LAYER_set_read_ahead(&sc->rlayer, 1);
2785 case SSL_CTRL_GET_RI_SUPPORT:
2786 return sc->s3.send_connection_binding;
2787 case SSL_CTRL_SET_RETRY_VERIFY:
2788 sc->rwstate = SSL_RETRY_VERIFY;
2790 case SSL_CTRL_CERT_FLAGS:
2791 return (sc->cert->cert_flags |= larg);
2792 case SSL_CTRL_CLEAR_CERT_FLAGS:
2793 return (sc->cert->cert_flags &= ~larg);
2795 case SSL_CTRL_GET_RAW_CIPHERLIST:
2797 if (sc->s3.tmp.ciphers_raw == NULL)
2799 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2800 return (int)sc->s3.tmp.ciphers_rawlen;
2802 return TLS_CIPHER_LEN;
2804 case SSL_CTRL_GET_EXTMS_SUPPORT:
2805 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2807 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2811 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2812 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2813 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2814 &sc->min_proto_version);
2815 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2816 return sc->min_proto_version;
2817 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2818 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2819 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2820 &sc->max_proto_version);
2821 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2822 return sc->max_proto_version;
2824 return s->method->ssl_ctrl(s, cmd, larg, parg);
2828 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2830 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2836 case SSL_CTRL_SET_MSG_CALLBACK:
2837 sc->msg_callback = (void (*)
2838 (int write_p, int version, int content_type,
2839 const void *buf, size_t len, SSL *ssl,
2844 return s->method->ssl_callback_ctrl(s, cmd, fp);
2848 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2850 return ctx->sessions;
2853 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2857 if (ssl_tsan_lock(ctx)) {
2858 res = tsan_load(stat);
2859 ssl_tsan_unlock(ctx);
2864 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2867 /* For some cases with ctx == NULL perform syntax checks */
2870 case SSL_CTRL_SET_GROUPS_LIST:
2871 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2872 case SSL_CTRL_SET_SIGALGS_LIST:
2873 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2874 return tls1_set_sigalgs_list(NULL, parg, 0);
2881 case SSL_CTRL_GET_READ_AHEAD:
2882 return ctx->read_ahead;
2883 case SSL_CTRL_SET_READ_AHEAD:
2884 l = ctx->read_ahead;
2885 ctx->read_ahead = larg;
2888 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2889 ctx->msg_callback_arg = parg;
2892 case SSL_CTRL_GET_MAX_CERT_LIST:
2893 return (long)ctx->max_cert_list;
2894 case SSL_CTRL_SET_MAX_CERT_LIST:
2897 l = (long)ctx->max_cert_list;
2898 ctx->max_cert_list = (size_t)larg;
2901 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2904 l = (long)ctx->session_cache_size;
2905 ctx->session_cache_size = (size_t)larg;
2907 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2908 return (long)ctx->session_cache_size;
2909 case SSL_CTRL_SET_SESS_CACHE_MODE:
2910 l = ctx->session_cache_mode;
2911 ctx->session_cache_mode = larg;
2913 case SSL_CTRL_GET_SESS_CACHE_MODE:
2914 return ctx->session_cache_mode;
2916 case SSL_CTRL_SESS_NUMBER:
2917 return lh_SSL_SESSION_num_items(ctx->sessions);
2918 case SSL_CTRL_SESS_CONNECT:
2919 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2920 case SSL_CTRL_SESS_CONNECT_GOOD:
2921 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2922 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2923 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2924 case SSL_CTRL_SESS_ACCEPT:
2925 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2926 case SSL_CTRL_SESS_ACCEPT_GOOD:
2927 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2928 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2929 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2930 case SSL_CTRL_SESS_HIT:
2931 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2932 case SSL_CTRL_SESS_CB_HIT:
2933 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2934 case SSL_CTRL_SESS_MISSES:
2935 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2936 case SSL_CTRL_SESS_TIMEOUTS:
2937 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2938 case SSL_CTRL_SESS_CACHE_FULL:
2939 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2941 return (ctx->mode |= larg);
2942 case SSL_CTRL_CLEAR_MODE:
2943 return (ctx->mode &= ~larg);
2944 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2945 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2947 ctx->max_send_fragment = larg;
2948 if (ctx->max_send_fragment < ctx->split_send_fragment)
2949 ctx->split_send_fragment = ctx->max_send_fragment;
2951 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2952 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2954 ctx->split_send_fragment = larg;
2956 case SSL_CTRL_SET_MAX_PIPELINES:
2957 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2959 ctx->max_pipelines = larg;
2961 case SSL_CTRL_CERT_FLAGS:
2962 return (ctx->cert->cert_flags |= larg);
2963 case SSL_CTRL_CLEAR_CERT_FLAGS:
2964 return (ctx->cert->cert_flags &= ~larg);
2965 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2966 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2967 && ssl_set_version_bound(ctx->method->version, (int)larg,
2968 &ctx->min_proto_version);
2969 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2970 return ctx->min_proto_version;
2971 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2972 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2973 && ssl_set_version_bound(ctx->method->version, (int)larg,
2974 &ctx->max_proto_version);
2975 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2976 return ctx->max_proto_version;
2978 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2982 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2985 case SSL_CTRL_SET_MSG_CALLBACK:
2986 ctx->msg_callback = (void (*)
2987 (int write_p, int version, int content_type,
2988 const void *buf, size_t len, SSL *ssl,
2993 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2997 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3006 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3007 const SSL_CIPHER *const *bp)
3009 if ((*ap)->id > (*bp)->id)
3011 if ((*ap)->id < (*bp)->id)
3017 * return a STACK of the ciphers available for the SSL and in order of
3020 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3022 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3025 if (sc->cipher_list != NULL) {
3026 return sc->cipher_list;
3027 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3028 return s->ctx->cipher_list;
3034 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3036 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3038 if (sc == NULL || !sc->server)
3040 return sc->peer_ciphers;
3043 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3045 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3047 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3052 ciphers = SSL_get_ciphers(s);
3055 if (!ssl_set_client_disabled(sc))
3057 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3058 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3059 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3061 sk = sk_SSL_CIPHER_new_null();
3064 if (!sk_SSL_CIPHER_push(sk, c)) {
3065 sk_SSL_CIPHER_free(sk);
3073 /** return a STACK of the ciphers available for the SSL and in order of
3075 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3078 if (s->cipher_list_by_id != NULL)
3079 return s->cipher_list_by_id;
3080 else if (s->ssl.ctx != NULL
3081 && s->ssl.ctx->cipher_list_by_id != NULL)
3082 return s->ssl.ctx->cipher_list_by_id;
3087 /** The old interface to get the same thing as SSL_get_ciphers() */
3088 const char *SSL_get_cipher_list(const SSL *s, int n)
3090 const SSL_CIPHER *c;
3091 STACK_OF(SSL_CIPHER) *sk;
3095 sk = SSL_get_ciphers(s);
3096 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3098 c = sk_SSL_CIPHER_value(sk, n);
3104 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3106 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3109 return ctx->cipher_list;
3114 * Distinguish between ciphers controlled by set_ciphersuite() and
3115 * set_cipher_list() when counting.
3117 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3120 const SSL_CIPHER *c;
3124 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3125 c = sk_SSL_CIPHER_value(sk, i);
3126 if (c->min_tls >= TLS1_3_VERSION)
3133 /** specify the ciphers to be used by default by the SSL_CTX */
3134 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3136 STACK_OF(SSL_CIPHER) *sk;
3138 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3139 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3142 * ssl_create_cipher_list may return an empty stack if it was unable to
3143 * find a cipher matching the given rule string (for example if the rule
3144 * string specifies a cipher which has been disabled). This is not an
3145 * error as far as ssl_create_cipher_list is concerned, and hence
3146 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3150 else if (cipher_list_tls12_num(sk) == 0) {
3151 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3157 /** specify the ciphers to be used by the SSL */
3158 int SSL_set_cipher_list(SSL *s, const char *str)
3160 STACK_OF(SSL_CIPHER) *sk;
3161 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3166 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3167 &sc->cipher_list, &sc->cipher_list_by_id, str,
3169 /* see comment in SSL_CTX_set_cipher_list */
3172 else if (cipher_list_tls12_num(sk) == 0) {
3173 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3179 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3182 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3183 const SSL_CIPHER *c;
3185 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3191 || sc->peer_ciphers == NULL
3196 clntsk = sc->peer_ciphers;
3197 srvrsk = SSL_get_ciphers(s);
3198 if (clntsk == NULL || srvrsk == NULL)
3201 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3204 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3207 c = sk_SSL_CIPHER_value(clntsk, i);
3208 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3211 n = strlen(c->name);
3228 * Return the requested servername (SNI) value. Note that the behaviour varies
3230 * - whether this is called by the client or the server,
3231 * - if we are before or during/after the handshake,
3232 * - if a resumption or normal handshake is being attempted/has occurred
3233 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3235 * Note that only the host_name type is defined (RFC 3546).
3237 const char *SSL_get_servername(const SSL *s, const int type)
3239 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3246 * If we don't know if we are the client or the server yet then we assume
3249 server = sc->handshake_func == NULL ? 0 : sc->server;
3251 if (type != TLSEXT_NAMETYPE_host_name)
3257 * In TLSv1.3 on the server SNI is not associated with the session
3258 * but in TLSv1.2 or below it is.
3260 * Before the handshake:
3263 * During/after the handshake (TLSv1.2 or below resumption occurred):
3264 * - If a servername was accepted by the server in the original
3265 * handshake then it will return that servername, or NULL otherwise.
3267 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3268 * - The function will return the servername requested by the client in
3269 * this handshake or NULL if none was requested.
3271 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3272 return sc->session->ext.hostname;
3277 * Before the handshake:
3278 * - If a servername has been set via a call to
3279 * SSL_set_tlsext_host_name() then it will return that servername
3280 * - If one has not been set, but a TLSv1.2 resumption is being
3281 * attempted and the session from the original handshake had a
3282 * servername accepted by the server then it will return that
3284 * - Otherwise it returns NULL
3286 * During/after the handshake (TLSv1.2 or below resumption occurred):
3287 * - If the session from the original handshake had a servername accepted
3288 * by the server then it will return that servername.
3289 * - Otherwise it returns the servername set via
3290 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3292 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3293 * - It will return the servername set via SSL_set_tlsext_host_name()
3294 * (or NULL if it was not called).
3296 if (SSL_in_before(s)) {
3297 if (sc->ext.hostname == NULL
3298 && sc->session != NULL
3299 && sc->session->ssl_version != TLS1_3_VERSION)
3300 return sc->session->ext.hostname;
3302 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3303 && sc->session->ext.hostname != NULL)
3304 return sc->session->ext.hostname;
3308 return sc->ext.hostname;
3311 int SSL_get_servername_type(const SSL *s)
3313 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3314 return TLSEXT_NAMETYPE_host_name;
3319 * SSL_select_next_proto implements the standard protocol selection. It is
3320 * expected that this function is called from the callback set by
3321 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3322 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3323 * not included in the length. A byte string of length 0 is invalid. No byte
3324 * string may be truncated. The current, but experimental algorithm for
3325 * selecting the protocol is: 1) If the server doesn't support NPN then this
3326 * is indicated to the callback. In this case, the client application has to
3327 * abort the connection or have a default application level protocol. 2) If
3328 * the server supports NPN, but advertises an empty list then the client
3329 * selects the first protocol in its list, but indicates via the API that this
3330 * fallback case was enacted. 3) Otherwise, the client finds the first
3331 * protocol in the server's list that it supports and selects this protocol.
3332 * This is because it's assumed that the server has better information about
3333 * which protocol a client should use. 4) If the client doesn't support any
3334 * of the server's advertised protocols, then this is treated the same as
3335 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3336 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3338 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3339 const unsigned char *server,
3340 unsigned int server_len,
3341 const unsigned char *client, unsigned int client_len)
3344 const unsigned char *result;
3345 int status = OPENSSL_NPN_UNSUPPORTED;
3348 * For each protocol in server preference order, see if we support it.
3350 for (i = 0; i < server_len;) {
3351 for (j = 0; j < client_len;) {
3352 if (server[i] == client[j] &&
3353 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3354 /* We found a match */
3355 result = &server[i];
3356 status = OPENSSL_NPN_NEGOTIATED;
3366 /* There's no overlap between our protocols and the server's list. */
3368 status = OPENSSL_NPN_NO_OVERLAP;
3371 *out = (unsigned char *)result + 1;
3372 *outlen = result[0];
3376 #ifndef OPENSSL_NO_NEXTPROTONEG
3378 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3379 * client's requested protocol for this connection and returns 0. If the
3380 * client didn't request any protocol, then *data is set to NULL. Note that
3381 * the client can request any protocol it chooses. The value returned from
3382 * this function need not be a member of the list of supported protocols
3383 * provided by the callback.
3385 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3388 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3391 /* We have no other way to indicate error */
3397 *data = sc->ext.npn;
3398 if (*data == NULL) {
3401 *len = (unsigned int)sc->ext.npn_len;
3406 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3407 * a TLS server needs a list of supported protocols for Next Protocol
3408 * Negotiation. The returned list must be in wire format. The list is
3409 * returned by setting |out| to point to it and |outlen| to its length. This
3410 * memory will not be modified, but one should assume that the SSL* keeps a
3411 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3412 * wishes to advertise. Otherwise, no such extension will be included in the
3415 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3416 SSL_CTX_npn_advertised_cb_func cb,
3419 ctx->ext.npn_advertised_cb = cb;
3420 ctx->ext.npn_advertised_cb_arg = arg;
3424 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3425 * client needs to select a protocol from the server's provided list. |out|
3426 * must be set to point to the selected protocol (which may be within |in|).
3427 * The length of the protocol name must be written into |outlen|. The
3428 * server's advertised protocols are provided in |in| and |inlen|. The
3429 * callback can assume that |in| is syntactically valid. The client must
3430 * select a protocol. It is fatal to the connection if this callback returns
3431 * a value other than SSL_TLSEXT_ERR_OK.
3433 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3434 SSL_CTX_npn_select_cb_func cb,
3437 ctx->ext.npn_select_cb = cb;
3438 ctx->ext.npn_select_cb_arg = arg;
3442 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3446 if (protos_len < 2 || protos == NULL)
3449 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3450 if (protos[idx] == 0)
3453 return idx == protos_len;
3456 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3457 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3458 * length-prefixed strings). Returns 0 on success.
3460 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3461 unsigned int protos_len)
3463 unsigned char *alpn;
3465 if (protos_len == 0 || protos == NULL) {
3466 OPENSSL_free(ctx->ext.alpn);
3467 ctx->ext.alpn = NULL;
3468 ctx->ext.alpn_len = 0;
3471 /* Not valid per RFC */
3472 if (!alpn_value_ok(protos, protos_len))
3475 alpn = OPENSSL_memdup(protos, protos_len);
3477 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3480 OPENSSL_free(ctx->ext.alpn);
3481 ctx->ext.alpn = alpn;
3482 ctx->ext.alpn_len = protos_len;
3488 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3489 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3490 * length-prefixed strings). Returns 0 on success.
3492 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3493 unsigned int protos_len)
3495 unsigned char *alpn;
3496 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3501 if (protos_len == 0 || protos == NULL) {
3502 OPENSSL_free(sc->ext.alpn);
3503 sc->ext.alpn = NULL;
3504 sc->ext.alpn_len = 0;
3507 /* Not valid per RFC */
3508 if (!alpn_value_ok(protos, protos_len))
3511 alpn = OPENSSL_memdup(protos, protos_len);
3513 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3516 OPENSSL_free(sc->ext.alpn);
3517 sc->ext.alpn = alpn;
3518 sc->ext.alpn_len = protos_len;
3524 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3525 * called during ClientHello processing in order to select an ALPN protocol
3526 * from the client's list of offered protocols.
3528 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3529 SSL_CTX_alpn_select_cb_func cb,
3532 ctx->ext.alpn_select_cb = cb;
3533 ctx->ext.alpn_select_cb_arg = arg;
3537 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3538 * On return it sets |*data| to point to |*len| bytes of protocol name
3539 * (not including the leading length-prefix byte). If the server didn't
3540 * respond with a negotiated protocol then |*len| will be zero.
3542 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3545 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3548 /* We have no other way to indicate error */
3554 *data = sc->s3.alpn_selected;
3558 *len = (unsigned int)sc->s3.alpn_selected_len;
3561 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3562 const char *label, size_t llen,
3563 const unsigned char *context, size_t contextlen,
3566 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3571 if (sc->session == NULL
3572 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3575 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3577 contextlen, use_context);
3580 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3581 const char *label, size_t llen,
3582 const unsigned char *context,
3585 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3590 if (sc->version != TLS1_3_VERSION)
3593 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3594 context, contextlen);
3597 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3599 const unsigned char *session_id = a->session_id;
3601 unsigned char tmp_storage[4];
3603 if (a->session_id_length < sizeof(tmp_storage)) {
3604 memset(tmp_storage, 0, sizeof(tmp_storage));
3605 memcpy(tmp_storage, a->session_id, a->session_id_length);
3606 session_id = tmp_storage;
3610 ((unsigned long)session_id[0]) |
3611 ((unsigned long)session_id[1] << 8L) |
3612 ((unsigned long)session_id[2] << 16L) |
3613 ((unsigned long)session_id[3] << 24L);
3618 * NB: If this function (or indeed the hash function which uses a sort of
3619 * coarser function than this one) is changed, ensure
3620 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3621 * being able to construct an SSL_SESSION that will collide with any existing
3622 * session with a matching session ID.
3624 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3626 if (a->ssl_version != b->ssl_version)
3628 if (a->session_id_length != b->session_id_length)
3630 return memcmp(a->session_id, b->session_id, a->session_id_length);
3634 * These wrapper functions should remain rather than redeclaring
3635 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3636 * variable. The reason is that the functions aren't static, they're exposed
3640 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3641 const SSL_METHOD *meth)
3643 SSL_CTX *ret = NULL;
3646 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3650 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3653 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3654 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3657 ret = OPENSSL_zalloc(sizeof(*ret));
3661 /* Init the reference counting before any call to SSL_CTX_free */
3662 ret->references = 1;
3663 ret->lock = CRYPTO_THREAD_lock_new();
3664 if (ret->lock == NULL) {
3665 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3670 #ifdef TSAN_REQUIRES_LOCKING
3671 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3672 if (ret->tsan_lock == NULL) {
3673 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3678 ret->libctx = libctx;
3679 if (propq != NULL) {
3680 ret->propq = OPENSSL_strdup(propq);
3681 if (ret->propq == NULL)
3686 ret->min_proto_version = 0;
3687 ret->max_proto_version = 0;
3688 ret->mode = SSL_MODE_AUTO_RETRY;
3689 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3690 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3691 /* We take the system default. */
3692 ret->session_timeout = meth->get_timeout();
3693 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3694 ret->verify_mode = SSL_VERIFY_NONE;
3695 if ((ret->cert = ssl_cert_new()) == NULL)
3698 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3699 if (ret->sessions == NULL)
3701 ret->cert_store = X509_STORE_new();
3702 if (ret->cert_store == NULL)
3704 #ifndef OPENSSL_NO_CT
3705 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3706 if (ret->ctlog_store == NULL)
3710 /* initialize cipher/digest methods table */
3711 if (!ssl_load_ciphers(ret))
3713 /* initialise sig algs */
3714 if (!ssl_setup_sig_algs(ret))
3718 if (!ssl_load_groups(ret))
3721 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3724 if (!ssl_create_cipher_list(ret,
3725 ret->tls13_ciphersuites,
3726 &ret->cipher_list, &ret->cipher_list_by_id,
3727 OSSL_default_cipher_list(), ret->cert)
3728 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3729 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3733 ret->param = X509_VERIFY_PARAM_new();
3734 if (ret->param == NULL)
3738 * If these aren't available from the provider we'll get NULL returns.
3739 * That's fine but will cause errors later if SSLv3 is negotiated
3741 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3742 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3744 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3747 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3750 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3753 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3756 /* No compression for DTLS */
3757 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3758 ret->comp_methods = SSL_COMP_get_compression_methods();
3760 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3761 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3763 /* Setup RFC5077 ticket keys */
3764 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3765 sizeof(ret->ext.tick_key_name), 0) <= 0)
3766 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3767 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3768 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3769 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3770 ret->options |= SSL_OP_NO_TICKET;
3772 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3773 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3776 #ifndef OPENSSL_NO_SRP
3777 if (!ssl_ctx_srp_ctx_init_intern(ret))
3780 #ifndef OPENSSL_NO_ENGINE
3781 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3782 # define eng_strx(x) #x
3783 # define eng_str(x) eng_strx(x)
3784 /* Use specific client engine automatically... ignore errors */
3787 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3790 ENGINE_load_builtin_engines();
3791 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3793 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3799 * Disable compression by default to prevent CRIME. Applications can
3800 * re-enable compression by configuring
3801 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3802 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3803 * middlebox compatibility by default. This may be disabled by default in
3804 * a later OpenSSL version.
3806 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3808 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3811 * We cannot usefully set a default max_early_data here (which gets
3812 * propagated in SSL_new(), for the following reason: setting the
3813 * SSL field causes tls_construct_stoc_early_data() to tell the
3814 * client that early data will be accepted when constructing a TLS 1.3
3815 * session ticket, and the client will accordingly send us early data
3816 * when using that ticket (if the client has early data to send).
3817 * However, in order for the early data to actually be consumed by
3818 * the application, the application must also have calls to
3819 * SSL_read_early_data(); otherwise we'll just skip past the early data
3820 * and ignore it. So, since the application must add calls to
3821 * SSL_read_early_data(), we also require them to add
3822 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3823 * eliminating the bandwidth-wasting early data in the case described
3826 ret->max_early_data = 0;
3829 * Default recv_max_early_data is a fully loaded single record. Could be
3830 * split across multiple records in practice. We set this differently to
3831 * max_early_data so that, in the default case, we do not advertise any
3832 * support for early_data, but if a client were to send us some (e.g.
3833 * because of an old, stale ticket) then we will tolerate it and skip over
3836 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3838 /* By default we send two session tickets automatically in TLSv1.3 */
3839 ret->num_tickets = 2;
3841 ssl_ctx_system_config(ret);
3845 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3851 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3853 return SSL_CTX_new_ex(NULL, NULL, meth);
3856 int SSL_CTX_up_ref(SSL_CTX *ctx)
3860 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3863 REF_PRINT_COUNT("SSL_CTX", ctx);
3864 REF_ASSERT_ISNT(i < 2);
3865 return ((i > 1) ? 1 : 0);
3868 void SSL_CTX_free(SSL_CTX *a)
3876 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3877 REF_PRINT_COUNT("SSL_CTX", a);
3880 REF_ASSERT_ISNT(i < 0);
3882 X509_VERIFY_PARAM_free(a->param);
3883 dane_ctx_final(&a->dane);
3886 * Free internal session cache. However: the remove_cb() may reference
3887 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3888 * after the sessions were flushed.
3889 * As the ex_data handling routines might also touch the session cache,
3890 * the most secure solution seems to be: empty (flush) the cache, then
3891 * free ex_data, then finally free the cache.
3892 * (See ticket [openssl.org #212].)
3894 if (a->sessions != NULL)
3895 SSL_CTX_flush_sessions(a, 0);
3897 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3898 lh_SSL_SESSION_free(a->sessions);
3899 X509_STORE_free(a->cert_store);
3900 #ifndef OPENSSL_NO_CT
3901 CTLOG_STORE_free(a->ctlog_store);
3903 sk_SSL_CIPHER_free(a->cipher_list);
3904 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3905 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3906 ssl_cert_free(a->cert);
3907 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3908 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3909 OSSL_STACK_OF_X509_free(a->extra_certs);
3910 a->comp_methods = NULL;
3911 #ifndef OPENSSL_NO_SRTP
3912 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3914 #ifndef OPENSSL_NO_SRP
3915 ssl_ctx_srp_ctx_free_intern(a);
3917 #ifndef OPENSSL_NO_ENGINE
3918 tls_engine_finish(a->client_cert_engine);
3921 OPENSSL_free(a->ext.ecpointformats);
3922 OPENSSL_free(a->ext.supportedgroups);
3923 OPENSSL_free(a->ext.supported_groups_default);
3924 OPENSSL_free(a->ext.alpn);
3925 OPENSSL_secure_free(a->ext.secure);
3927 ssl_evp_md_free(a->md5);
3928 ssl_evp_md_free(a->sha1);
3930 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3931 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3932 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3933 ssl_evp_md_free(a->ssl_digest_methods[j]);
3934 for (j = 0; j < a->group_list_len; j++) {
3935 OPENSSL_free(a->group_list[j].tlsname);
3936 OPENSSL_free(a->group_list[j].realname);
3937 OPENSSL_free(a->group_list[j].algorithm);
3939 OPENSSL_free(a->group_list);
3941 OPENSSL_free(a->sigalg_lookup_cache);
3943 CRYPTO_THREAD_lock_free(a->lock);
3944 #ifdef TSAN_REQUIRES_LOCKING
3945 CRYPTO_THREAD_lock_free(a->tsan_lock);
3948 OPENSSL_free(a->propq);
3953 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3955 ctx->default_passwd_callback = cb;
3958 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3960 ctx->default_passwd_callback_userdata = u;
3963 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3965 return ctx->default_passwd_callback;
3968 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3970 return ctx->default_passwd_callback_userdata;
3973 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3975 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3980 sc->default_passwd_callback = cb;
3983 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3985 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3990 sc->default_passwd_callback_userdata = u;
3993 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3995 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4000 return sc->default_passwd_callback;
4003 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4005 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4010 return sc->default_passwd_callback_userdata;
4013 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4014 int (*cb) (X509_STORE_CTX *, void *),
4017 ctx->app_verify_callback = cb;
4018 ctx->app_verify_arg = arg;
4021 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4022 int (*cb) (int, X509_STORE_CTX *))
4024 ctx->verify_mode = mode;
4025 ctx->default_verify_callback = cb;
4028 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4030 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4033 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4035 ssl_cert_set_cert_cb(c->cert, cb, arg);
4038 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4040 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4045 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4048 void ssl_set_masks(SSL_CONNECTION *s)
4051 uint32_t *pvalid = s->s3.tmp.valid_flags;
4052 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4053 unsigned long mask_k, mask_a;
4054 int have_ecc_cert, ecdsa_ok;
4059 dh_tmp = (c->dh_tmp != NULL
4060 || c->dh_tmp_cb != NULL
4063 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4064 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4065 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4066 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4070 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4071 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4073 #ifndef OPENSSL_NO_GOST
4074 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4075 mask_k |= SSL_kGOST | SSL_kGOST18;
4076 mask_a |= SSL_aGOST12;
4078 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4079 mask_k |= SSL_kGOST | SSL_kGOST18;
4080 mask_a |= SSL_aGOST12;
4082 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4083 mask_k |= SSL_kGOST;
4084 mask_a |= SSL_aGOST01;
4095 * If we only have an RSA-PSS certificate allow RSA authentication
4096 * if TLS 1.2 and peer supports it.
4099 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4100 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4101 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4108 mask_a |= SSL_aNULL;
4111 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4112 * depending on the key usage extension.
4114 if (have_ecc_cert) {
4116 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4117 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4118 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4121 mask_a |= SSL_aECDSA;
4123 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4124 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4125 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4126 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4127 mask_a |= SSL_aECDSA;
4129 /* Allow Ed448 for TLS 1.2 if peer supports it */
4130 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4131 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4132 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4133 mask_a |= SSL_aECDSA;
4135 mask_k |= SSL_kECDHE;
4137 #ifndef OPENSSL_NO_PSK
4140 if (mask_k & SSL_kRSA)
4141 mask_k |= SSL_kRSAPSK;
4142 if (mask_k & SSL_kDHE)
4143 mask_k |= SSL_kDHEPSK;
4144 if (mask_k & SSL_kECDHE)
4145 mask_k |= SSL_kECDHEPSK;
4148 s->s3.tmp.mask_k = mask_k;
4149 s->s3.tmp.mask_a = mask_a;
4152 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4154 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4155 /* key usage, if present, must allow signing */
4156 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4157 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4161 return 1; /* all checks are ok */
4164 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4165 const unsigned char **serverinfo,
4166 size_t *serverinfo_length)
4168 CERT_PKEY *cpk = s->s3.tmp.cert;
4169 *serverinfo_length = 0;
4171 if (cpk == NULL || cpk->serverinfo == NULL)
4174 *serverinfo = cpk->serverinfo;
4175 *serverinfo_length = cpk->serverinfo_length;
4179 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4184 * If the session_id_length is 0, we are not supposed to cache it, and it
4185 * would be rather hard to do anyway :-)
4187 if (s->session->session_id_length == 0)
4191 * If sid_ctx_length is 0 there is no specific application context
4192 * associated with this session, so when we try to resume it and
4193 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4194 * indication that this is actually a session for the proper application
4195 * context, and the *handshake* will fail, not just the resumption attempt.
4196 * Do not cache (on the server) these sessions that are not resumable
4197 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4199 if (s->server && s->session->sid_ctx_length == 0
4200 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4203 i = s->session_ctx->session_cache_mode;
4205 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4207 * Add the session to the internal cache. In server side TLSv1.3 we
4208 * normally don't do this because by default it's a full stateless ticket
4209 * with only a dummy session id so there is no reason to cache it,
4211 * - we are doing early_data, in which case we cache so that we can
4213 * - the application has set a remove_session_cb so needs to know about
4214 * session timeout events
4215 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4217 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4218 && (!SSL_CONNECTION_IS_TLS13(s)
4220 || (s->max_early_data > 0
4221 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4222 || s->session_ctx->remove_session_cb != NULL
4223 || (s->options & SSL_OP_NO_TICKET) != 0))
4224 SSL_CTX_add_session(s->session_ctx, s->session);
4227 * Add the session to the external cache. We do this even in server side
4228 * TLSv1.3 without early data because some applications just want to
4229 * know about the creation of a session and aren't doing a full cache.
4231 if (s->session_ctx->new_session_cb != NULL) {
4232 SSL_SESSION_up_ref(s->session);
4233 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4235 SSL_SESSION_free(s->session);
4239 /* auto flush every 255 connections */
4240 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4241 TSAN_QUALIFIER int *stat;
4243 if (mode & SSL_SESS_CACHE_CLIENT)
4244 stat = &s->session_ctx->stats.sess_connect_good;
4246 stat = &s->session_ctx->stats.sess_accept_good;
4247 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4248 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4252 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4257 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4262 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4267 /* TODO(QUIC): Do we want this for QUIC? */
4269 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4272 if (s->method != meth) {
4273 const SSL_METHOD *sm = s->method;
4274 int (*hf) (SSL *) = sc->handshake_func;
4276 if (sm->version == meth->version)
4281 ret = s->method->ssl_init(s);
4284 if (hf == sm->ssl_connect)
4285 sc->handshake_func = meth->ssl_connect;
4286 else if (hf == sm->ssl_accept)
4287 sc->handshake_func = meth->ssl_accept;
4292 int SSL_get_error(const SSL *s, int i)
4297 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4300 return SSL_ERROR_NONE;
4302 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4304 return SSL_ERROR_SSL;
4307 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4308 * where we do encode the error
4310 if ((l = ERR_peek_error()) != 0) {
4311 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4312 return SSL_ERROR_SYSCALL;
4314 return SSL_ERROR_SSL;
4317 if (SSL_want_read(s)) {
4318 bio = SSL_get_rbio(s);
4319 if (BIO_should_read(bio))
4320 return SSL_ERROR_WANT_READ;
4321 else if (BIO_should_write(bio))
4323 * This one doesn't make too much sense ... We never try to write
4324 * to the rbio, and an application program where rbio and wbio
4325 * are separate couldn't even know what it should wait for.
4326 * However if we ever set s->rwstate incorrectly (so that we have
4327 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4328 * wbio *are* the same, this test works around that bug; so it
4329 * might be safer to keep it.
4331 return SSL_ERROR_WANT_WRITE;
4332 else if (BIO_should_io_special(bio)) {
4333 reason = BIO_get_retry_reason(bio);
4334 if (reason == BIO_RR_CONNECT)
4335 return SSL_ERROR_WANT_CONNECT;
4336 else if (reason == BIO_RR_ACCEPT)
4337 return SSL_ERROR_WANT_ACCEPT;
4339 return SSL_ERROR_SYSCALL; /* unknown */
4343 if (SSL_want_write(s)) {
4344 /* Access wbio directly - in order to use the buffered bio if present */
4346 if (BIO_should_write(bio))
4347 return SSL_ERROR_WANT_WRITE;
4348 else if (BIO_should_read(bio))
4350 * See above (SSL_want_read(s) with BIO_should_write(bio))
4352 return SSL_ERROR_WANT_READ;
4353 else if (BIO_should_io_special(bio)) {
4354 reason = BIO_get_retry_reason(bio);
4355 if (reason == BIO_RR_CONNECT)
4356 return SSL_ERROR_WANT_CONNECT;
4357 else if (reason == BIO_RR_ACCEPT)
4358 return SSL_ERROR_WANT_ACCEPT;
4360 return SSL_ERROR_SYSCALL;
4363 if (SSL_want_x509_lookup(s))
4364 return SSL_ERROR_WANT_X509_LOOKUP;
4365 if (SSL_want_retry_verify(s))
4366 return SSL_ERROR_WANT_RETRY_VERIFY;
4367 if (SSL_want_async(s))
4368 return SSL_ERROR_WANT_ASYNC;
4369 if (SSL_want_async_job(s))
4370 return SSL_ERROR_WANT_ASYNC_JOB;
4371 if (SSL_want_client_hello_cb(s))
4372 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4374 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4375 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4376 return SSL_ERROR_ZERO_RETURN;
4378 return SSL_ERROR_SYSCALL;
4381 static int ssl_do_handshake_intern(void *vargs)
4383 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4385 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4390 return sc->handshake_func(s);
4393 int SSL_do_handshake(SSL *s)
4396 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4398 /* TODO(QUIC): Special handling for QUIC will be needed */
4402 if (sc->handshake_func == NULL) {
4403 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4407 ossl_statem_check_finish_init(sc, -1);
4409 s->method->ssl_renegotiate_check(s, 0);
4411 if (SSL_in_init(s) || SSL_in_before(s)) {
4412 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4413 struct ssl_async_args args;
4415 memset(&args, 0, sizeof(args));
4418 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4420 ret = sc->handshake_func(s);
4426 void SSL_set_accept_state(SSL *s)
4428 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4430 /* TODO(QUIC): Special handling for QUIC will be needed */
4436 ossl_statem_clear(sc);
4437 sc->handshake_func = s->method->ssl_accept;
4441 void SSL_set_connect_state(SSL *s)
4443 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4445 /* TODO(QUIC): Special handling for QUIC will be needed */
4451 ossl_statem_clear(sc);
4452 sc->handshake_func = s->method->ssl_connect;
4456 int ssl_undefined_function(SSL *s)
4458 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4462 int ssl_undefined_void_function(void)
4464 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4468 int ssl_undefined_const_function(const SSL *s)
4473 const SSL_METHOD *ssl_bad_method(int ver)
4475 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4479 const char *ssl_protocol_to_string(int version)
4483 case TLS1_3_VERSION:
4486 case TLS1_2_VERSION:
4489 case TLS1_1_VERSION:
4504 case DTLS1_2_VERSION:
4512 const char *SSL_get_version(const SSL *s)
4514 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4516 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4520 return ssl_protocol_to_string(sc->version);
4523 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4525 STACK_OF(X509_NAME) *sk;
4534 if ((sk = sk_X509_NAME_new_null()) == NULL)
4536 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4537 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4539 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4542 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4544 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4553 SSL *SSL_dup(SSL *s)
4557 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4558 SSL_CONNECTION *retsc;
4559 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4564 /* If we're not quiescent, just up_ref! */
4565 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4566 CRYPTO_UP_REF(&s->references, &i, s->lock);
4571 * Otherwise, copy configuration state, and session if set.
4573 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4575 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4578 if (sc->session != NULL) {
4580 * Arranges to share the same session via up_ref. This "copies"
4581 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4583 if (!SSL_copy_session_id(ret, s))
4587 * No session has been established yet, so we have to expect that
4588 * s->cert or ret->cert will be changed later -- they should not both
4589 * point to the same object, and thus we can't use
4590 * SSL_copy_session_id.
4592 if (!SSL_set_ssl_method(ret, s->method))
4595 if (sc->cert != NULL) {
4596 ssl_cert_free(retsc->cert);
4597 retsc->cert = ssl_cert_dup(sc->cert);
4598 if (retsc->cert == NULL)
4602 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4603 (int)sc->sid_ctx_length))
4607 if (!ssl_dane_dup(retsc, sc))
4609 retsc->version = sc->version;
4610 retsc->options = sc->options;
4611 retsc->min_proto_version = sc->min_proto_version;
4612 retsc->max_proto_version = sc->max_proto_version;
4613 retsc->mode = sc->mode;
4614 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4615 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4616 retsc->msg_callback = sc->msg_callback;
4617 retsc->msg_callback_arg = sc->msg_callback_arg;
4618 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4619 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4620 retsc->generate_session_id = sc->generate_session_id;
4622 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4624 /* copy app data, a little dangerous perhaps */
4625 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4628 retsc->server = sc->server;
4629 if (sc->handshake_func) {
4631 SSL_set_accept_state(ret);
4633 SSL_set_connect_state(ret);
4635 retsc->shutdown = sc->shutdown;
4636 retsc->hit = sc->hit;
4638 retsc->default_passwd_callback = sc->default_passwd_callback;
4639 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4641 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4643 /* dup the cipher_list and cipher_list_by_id stacks */
4644 if (sc->cipher_list != NULL) {
4645 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4648 if (sc->cipher_list_by_id != NULL)
4649 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4653 /* Dup the client_CA list */
4654 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4655 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4665 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4667 if (s->enc_read_ctx != NULL) {
4668 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4669 s->enc_read_ctx = NULL;
4671 if (s->enc_write_ctx != NULL) {
4672 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4673 s->enc_write_ctx = NULL;
4675 #ifndef OPENSSL_NO_COMP
4676 COMP_CTX_free(s->expand);
4678 COMP_CTX_free(s->compress);
4683 X509 *SSL_get_certificate(const SSL *s)
4685 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4690 if (sc->cert != NULL)
4691 return sc->cert->key->x509;
4696 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4698 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4703 if (sc->cert != NULL)
4704 return sc->cert->key->privatekey;
4709 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4711 if (ctx->cert != NULL)
4712 return ctx->cert->key->x509;
4717 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4719 if (ctx->cert != NULL)
4720 return ctx->cert->key->privatekey;
4725 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4727 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4732 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4733 return sc->session->cipher;
4737 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4739 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4744 return sc->s3.tmp.new_cipher;
4747 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4749 #ifndef OPENSSL_NO_COMP
4750 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4755 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4761 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4763 #ifndef OPENSSL_NO_COMP
4764 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4769 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4775 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4779 if (s->bbio != NULL) {
4780 /* Already buffered. */
4784 bbio = BIO_new(BIO_f_buffer());
4785 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4787 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4791 s->wbio = BIO_push(bbio, s->wbio);
4796 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4798 /* callers ensure s is never null */
4799 if (s->bbio == NULL)
4802 s->wbio = BIO_pop(s->wbio);
4809 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4811 ctx->quiet_shutdown = mode;
4814 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4816 return ctx->quiet_shutdown;
4819 void SSL_set_quiet_shutdown(SSL *s, int mode)
4821 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4823 /* TODO(QUIC): Do we want this for QUIC? */
4827 sc->quiet_shutdown = mode;
4830 int SSL_get_quiet_shutdown(const SSL *s)
4832 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4834 /* TODO(QUIC): Do we want this for QUIC? */
4838 return sc->quiet_shutdown;
4841 void SSL_set_shutdown(SSL *s, int mode)
4843 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4845 /* TODO(QUIC): Do we want this for QUIC? */
4849 sc->shutdown = mode;
4852 int SSL_get_shutdown(const SSL *s)
4854 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4856 /* TODO(QUIC): Do we want this for QUIC? */
4860 return sc->shutdown;
4863 int SSL_version(const SSL *s)
4865 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4867 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4874 int SSL_client_version(const SSL *s)
4876 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4878 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4882 return sc->client_version;
4885 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4890 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4893 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4895 /* TODO(QUIC): Do we need this for QUIC support? */
4899 if (ssl->ctx == ctx)
4902 ctx = sc->session_ctx;
4903 new_cert = ssl_cert_dup(ctx->cert);
4904 if (new_cert == NULL) {
4908 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4909 ssl_cert_free(new_cert);
4913 ssl_cert_free(sc->cert);
4914 sc->cert = new_cert;
4917 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4918 * so setter APIs must prevent invalid lengths from entering the system.
4920 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4924 * If the session ID context matches that of the parent SSL_CTX,
4925 * inherit it from the new SSL_CTX as well. If however the context does
4926 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4927 * leave it unchanged.
4929 if ((ssl->ctx != NULL) &&
4930 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4931 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4932 sc->sid_ctx_length = ctx->sid_ctx_length;
4933 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4936 SSL_CTX_up_ref(ctx);
4937 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4943 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4945 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4949 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4951 X509_LOOKUP *lookup;
4953 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4957 /* We ignore errors, in case the directory doesn't exist */
4960 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4967 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4969 X509_LOOKUP *lookup;
4971 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4975 /* We ignore errors, in case the file doesn't exist */
4978 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4986 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4988 X509_LOOKUP *lookup;
4990 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4994 /* We ignore errors, in case the directory doesn't exist */
4997 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5004 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5006 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5010 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5012 return X509_STORE_load_path(ctx->cert_store, CApath);
5015 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5017 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5021 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5024 if (CAfile == NULL && CApath == NULL)
5026 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5028 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5033 void SSL_set_info_callback(SSL *ssl,
5034 void (*cb) (const SSL *ssl, int type, int val))
5036 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5041 sc->info_callback = cb;
5045 * One compiler (Diab DCC) doesn't like argument names in returned function
5048 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5051 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5056 return sc->info_callback;
5059 void SSL_set_verify_result(SSL *ssl, long arg)
5061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5066 sc->verify_result = arg;
5069 long SSL_get_verify_result(const SSL *ssl)
5071 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5076 return sc->verify_result;
5079 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5081 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5087 return sizeof(sc->s3.client_random);
5088 if (outlen > sizeof(sc->s3.client_random))
5089 outlen = sizeof(sc->s3.client_random);
5090 memcpy(out, sc->s3.client_random, outlen);
5094 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5096 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5102 return sizeof(sc->s3.server_random);
5103 if (outlen > sizeof(sc->s3.server_random))
5104 outlen = sizeof(sc->s3.server_random);
5105 memcpy(out, sc->s3.server_random, outlen);
5109 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5110 unsigned char *out, size_t outlen)
5113 return session->master_key_length;
5114 if (outlen > session->master_key_length)
5115 outlen = session->master_key_length;
5116 memcpy(out, session->master_key, outlen);
5120 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5123 if (len > sizeof(sess->master_key))
5126 memcpy(sess->master_key, in, len);
5127 sess->master_key_length = len;
5132 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5134 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5137 void *SSL_get_ex_data(const SSL *s, int idx)
5139 return CRYPTO_get_ex_data(&s->ex_data, idx);
5142 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5144 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5147 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5149 return CRYPTO_get_ex_data(&s->ex_data, idx);
5152 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5154 return ctx->cert_store;
5157 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5159 X509_STORE_free(ctx->cert_store);
5160 ctx->cert_store = store;
5163 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5166 X509_STORE_up_ref(store);
5167 SSL_CTX_set_cert_store(ctx, store);
5170 int SSL_want(const SSL *s)
5172 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5180 #ifndef OPENSSL_NO_PSK
5181 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5183 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5184 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5187 OPENSSL_free(ctx->cert->psk_identity_hint);
5188 if (identity_hint != NULL) {
5189 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5190 if (ctx->cert->psk_identity_hint == NULL)
5193 ctx->cert->psk_identity_hint = NULL;
5197 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5199 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5204 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5205 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5208 OPENSSL_free(sc->cert->psk_identity_hint);
5209 if (identity_hint != NULL) {
5210 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5211 if (sc->cert->psk_identity_hint == NULL)
5214 sc->cert->psk_identity_hint = NULL;
5218 const char *SSL_get_psk_identity_hint(const SSL *s)
5220 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5222 if (sc == NULL || sc->session == NULL)
5225 return sc->session->psk_identity_hint;
5228 const char *SSL_get_psk_identity(const SSL *s)
5230 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5232 if (sc == NULL || sc->session == NULL)
5235 return sc->session->psk_identity;
5238 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5240 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5245 sc->psk_client_callback = cb;
5248 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5250 ctx->psk_client_callback = cb;
5253 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5255 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5260 sc->psk_server_callback = cb;
5263 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5265 ctx->psk_server_callback = cb;
5269 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5271 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5276 sc->psk_find_session_cb = cb;
5279 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5280 SSL_psk_find_session_cb_func cb)
5282 ctx->psk_find_session_cb = cb;
5285 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5287 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5292 sc->psk_use_session_cb = cb;
5295 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5296 SSL_psk_use_session_cb_func cb)
5298 ctx->psk_use_session_cb = cb;
5301 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5302 void (*cb) (int write_p, int version,
5303 int content_type, const void *buf,
5304 size_t len, SSL *ssl, void *arg))
5306 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5309 void SSL_set_msg_callback(SSL *ssl,
5310 void (*cb) (int write_p, int version,
5311 int content_type, const void *buf,
5312 size_t len, SSL *ssl, void *arg))
5314 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5317 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5318 int (*cb) (SSL *ssl,
5322 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5323 (void (*)(void))cb);
5326 void SSL_set_not_resumable_session_callback(SSL *ssl,
5327 int (*cb) (SSL *ssl,
5328 int is_forward_secure))
5330 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5331 (void (*)(void))cb);
5334 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5335 size_t (*cb) (SSL *ssl, int type,
5336 size_t len, void *arg))
5338 ctx->record_padding_cb = cb;
5341 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5343 ctx->record_padding_arg = arg;
5346 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5348 return ctx->record_padding_arg;
5351 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5353 /* block size of 0 or 1 is basically no padding */
5354 if (block_size == 1)
5355 ctx->block_padding = 0;
5356 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5357 ctx->block_padding = block_size;
5363 int SSL_set_record_padding_callback(SSL *ssl,
5364 size_t (*cb) (SSL *ssl, int type,
5365 size_t len, void *arg))
5368 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5373 b = SSL_get_wbio(ssl);
5374 if (b == NULL || !BIO_get_ktls_send(b)) {
5375 sc->record_padding_cb = cb;
5381 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5383 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5388 sc->record_padding_arg = arg;
5391 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5393 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5398 return sc->record_padding_arg;
5401 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5403 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5408 /* block size of 0 or 1 is basically no padding */
5409 if (block_size == 1)
5410 sc->block_padding = 0;
5411 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5412 sc->block_padding = block_size;
5418 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5420 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5425 sc->num_tickets = num_tickets;
5430 size_t SSL_get_num_tickets(const SSL *s)
5432 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5437 return sc->num_tickets;
5440 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5442 ctx->num_tickets = num_tickets;
5447 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5449 return ctx->num_tickets;
5453 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5454 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5455 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5456 * Returns the newly allocated ctx;
5459 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5461 ssl_clear_hash_ctx(hash);
5462 *hash = EVP_MD_CTX_new();
5463 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5464 EVP_MD_CTX_free(*hash);
5471 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5474 EVP_MD_CTX_free(*hash);
5478 /* Retrieve handshake hashes */
5479 int ssl_handshake_hash(SSL_CONNECTION *s,
5480 unsigned char *out, size_t outlen,
5483 EVP_MD_CTX *ctx = NULL;
5484 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5485 int hashleni = EVP_MD_CTX_get_size(hdgst);
5488 if (hashleni < 0 || (size_t)hashleni > outlen) {
5489 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5493 ctx = EVP_MD_CTX_new();
5495 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5499 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5500 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5501 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5505 *hashlen = hashleni;
5509 EVP_MD_CTX_free(ctx);
5513 int SSL_session_reused(const SSL *s)
5515 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5523 int SSL_is_server(const SSL *s)
5525 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5533 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5534 void SSL_set_debug(SSL *s, int debug)
5536 /* Old function was do-nothing anyway... */
5542 void SSL_set_security_level(SSL *s, int level)
5544 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5549 sc->cert->sec_level = level;
5552 int SSL_get_security_level(const SSL *s)
5554 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5559 return sc->cert->sec_level;
5562 void SSL_set_security_callback(SSL *s,
5563 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5564 int op, int bits, int nid,
5565 void *other, void *ex))
5567 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5572 sc->cert->sec_cb = cb;
5575 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5576 const SSL_CTX *ctx, int op,
5577 int bits, int nid, void *other,
5579 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5584 return sc->cert->sec_cb;
5587 void SSL_set0_security_ex_data(SSL *s, void *ex)
5589 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5594 sc->cert->sec_ex = ex;
5597 void *SSL_get0_security_ex_data(const SSL *s)
5599 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5604 return sc->cert->sec_ex;
5607 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5609 ctx->cert->sec_level = level;
5612 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5614 return ctx->cert->sec_level;
5617 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5618 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5619 int op, int bits, int nid,
5620 void *other, void *ex))
5622 ctx->cert->sec_cb = cb;
5625 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5631 return ctx->cert->sec_cb;
5634 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5636 ctx->cert->sec_ex = ex;
5639 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5641 return ctx->cert->sec_ex;
5644 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5646 return ctx->options;
5649 uint64_t SSL_get_options(const SSL *s)
5651 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5659 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5661 return ctx->options |= op;
5664 uint64_t SSL_set_options(SSL *s, uint64_t op)
5666 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5671 return sc->options |= op;
5674 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5676 return ctx->options &= ~op;
5679 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5681 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5686 return sc->options &= ~op;
5689 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5691 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5696 return sc->verified_chain;
5699 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5701 #ifndef OPENSSL_NO_CT
5704 * Moves SCTs from the |src| stack to the |dst| stack.
5705 * The source of each SCT will be set to |origin|.
5706 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5708 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5710 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5711 sct_source_t origin)
5717 *dst = sk_SCT_new_null();
5719 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5724 while ((sct = sk_SCT_pop(src)) != NULL) {
5725 if (SCT_set_source(sct, origin) != 1)
5728 if (sk_SCT_push(*dst, sct) <= 0)
5736 sk_SCT_push(src, sct); /* Put the SCT back */
5741 * Look for data collected during ServerHello and parse if found.
5742 * Returns the number of SCTs extracted.
5744 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5746 int scts_extracted = 0;
5748 if (s->ext.scts != NULL) {
5749 const unsigned char *p = s->ext.scts;
5750 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5752 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5754 SCT_LIST_free(scts);
5757 return scts_extracted;
5761 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5762 * contains an SCT X509 extension. They will be stored in |s->scts|.
5764 * - The number of SCTs extracted, assuming an OCSP response exists.
5765 * - 0 if no OCSP response exists or it contains no SCTs.
5766 * - A negative integer if an error occurs.
5768 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5770 # ifndef OPENSSL_NO_OCSP
5771 int scts_extracted = 0;
5772 const unsigned char *p;
5773 OCSP_BASICRESP *br = NULL;
5774 OCSP_RESPONSE *rsp = NULL;
5775 STACK_OF(SCT) *scts = NULL;
5778 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5781 p = s->ext.ocsp.resp;
5782 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5786 br = OCSP_response_get1_basic(rsp);
5790 for (i = 0; i < OCSP_resp_count(br); ++i) {
5791 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5797 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5799 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5800 if (scts_extracted < 0)
5804 SCT_LIST_free(scts);
5805 OCSP_BASICRESP_free(br);
5806 OCSP_RESPONSE_free(rsp);
5807 return scts_extracted;
5809 /* Behave as if no OCSP response exists */
5815 * Attempts to extract SCTs from the peer certificate.
5816 * Return the number of SCTs extracted, or a negative integer if an error
5819 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5821 int scts_extracted = 0;
5822 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5825 STACK_OF(SCT) *scts =
5826 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5829 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5831 SCT_LIST_free(scts);
5834 return scts_extracted;
5838 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5839 * response (if it exists) and X509v3 extensions in the certificate.
5840 * Returns NULL if an error occurs.
5842 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5844 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5849 if (!sc->scts_parsed) {
5850 if (ct_extract_tls_extension_scts(sc) < 0 ||
5851 ct_extract_ocsp_response_scts(sc) < 0 ||
5852 ct_extract_x509v3_extension_scts(sc) < 0)
5855 sc->scts_parsed = 1;
5862 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5863 const STACK_OF(SCT) *scts, void *unused_arg)
5868 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5869 const STACK_OF(SCT) *scts, void *unused_arg)
5871 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5874 for (i = 0; i < count; ++i) {
5875 SCT *sct = sk_SCT_value(scts, i);
5876 int status = SCT_get_validation_status(sct);
5878 if (status == SCT_VALIDATION_STATUS_VALID)
5881 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5885 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5888 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5894 * Since code exists that uses the custom extension handler for CT, look
5895 * for this and throw an error if they have already registered to use CT.
5897 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5898 TLSEXT_TYPE_signed_certificate_timestamp))
5900 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5904 if (callback != NULL) {
5906 * If we are validating CT, then we MUST accept SCTs served via OCSP
5908 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5912 sc->ct_validation_callback = callback;
5913 sc->ct_validation_callback_arg = arg;
5918 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5919 ssl_ct_validation_cb callback, void *arg)
5922 * Since code exists that uses the custom extension handler for CT, look for
5923 * this and throw an error if they have already registered to use CT.
5925 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5926 TLSEXT_TYPE_signed_certificate_timestamp))
5928 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5932 ctx->ct_validation_callback = callback;
5933 ctx->ct_validation_callback_arg = arg;
5937 int SSL_ct_is_enabled(const SSL *s)
5939 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5944 return sc->ct_validation_callback != NULL;
5947 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5949 return ctx->ct_validation_callback != NULL;
5952 int ssl_validate_ct(SSL_CONNECTION *s)
5955 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5957 SSL_DANE *dane = &s->dane;
5958 CT_POLICY_EVAL_CTX *ctx = NULL;
5959 const STACK_OF(SCT) *scts;
5962 * If no callback is set, the peer is anonymous, or its chain is invalid,
5963 * skip SCT validation - just return success. Applications that continue
5964 * handshakes without certificates, with unverified chains, or pinned leaf
5965 * certificates are outside the scope of the WebPKI and CT.
5967 * The above exclusions notwithstanding the vast majority of peers will
5968 * have rather ordinary certificate chains validated by typical
5969 * applications that perform certificate verification and therefore will
5970 * process SCTs when enabled.
5972 if (s->ct_validation_callback == NULL || cert == NULL ||
5973 s->verify_result != X509_V_OK ||
5974 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5978 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5979 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5981 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5982 switch (dane->mtlsa->usage) {
5983 case DANETLS_USAGE_DANE_TA:
5984 case DANETLS_USAGE_DANE_EE:
5989 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5990 SSL_CONNECTION_GET_CTX(s)->propq);
5992 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5996 issuer = sk_X509_value(s->verified_chain, 1);
5997 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5998 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5999 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6000 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6001 CT_POLICY_EVAL_CTX_set_time(
6002 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6004 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6007 * This function returns success (> 0) only when all the SCTs are valid, 0
6008 * when some are invalid, and < 0 on various internal errors (out of
6009 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6010 * reason to abort the handshake, that decision is up to the callback.
6011 * Therefore, we error out only in the unexpected case that the return
6012 * value is negative.
6014 * XXX: One might well argue that the return value of this function is an
6015 * unfortunate design choice. Its job is only to determine the validation
6016 * status of each of the provided SCTs. So long as it correctly separates
6017 * the wheat from the chaff it should return success. Failure in this case
6018 * ought to correspond to an inability to carry out its duties.
6020 if (SCT_LIST_validate(scts, ctx) < 0) {
6021 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6025 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6027 ret = 0; /* This function returns 0 on failure */
6029 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6032 CT_POLICY_EVAL_CTX_free(ctx);
6034 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6035 * failure return code here. Also the application may wish the complete
6036 * the handshake, and then disconnect cleanly at a higher layer, after
6037 * checking the verification status of the completed connection.
6039 * We therefore force a certificate verification failure which will be
6040 * visible via SSL_get_verify_result() and cached as part of any resumed
6043 * Note: the permissive callback is for information gathering only, always
6044 * returns success, and does not affect verification status. Only the
6045 * strict callback or a custom application-specified callback can trigger
6046 * connection failure or record a verification error.
6049 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6053 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6055 switch (validation_mode) {
6057 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6059 case SSL_CT_VALIDATION_PERMISSIVE:
6060 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6061 case SSL_CT_VALIDATION_STRICT:
6062 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6066 int SSL_enable_ct(SSL *s, int validation_mode)
6068 switch (validation_mode) {
6070 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6072 case SSL_CT_VALIDATION_PERMISSIVE:
6073 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6074 case SSL_CT_VALIDATION_STRICT:
6075 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6079 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6081 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6084 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6086 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6089 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6091 CTLOG_STORE_free(ctx->ctlog_store);
6092 ctx->ctlog_store = logs;
6095 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6097 return ctx->ctlog_store;
6100 #endif /* OPENSSL_NO_CT */
6102 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6105 c->client_hello_cb = cb;
6106 c->client_hello_cb_arg = arg;
6109 int SSL_client_hello_isv2(SSL *s)
6111 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6116 if (sc->clienthello == NULL)
6118 return sc->clienthello->isv2;
6121 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6123 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6128 if (sc->clienthello == NULL)
6130 return sc->clienthello->legacy_version;
6133 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6135 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6140 if (sc->clienthello == NULL)
6143 *out = sc->clienthello->random;
6144 return SSL3_RANDOM_SIZE;
6147 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6149 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6154 if (sc->clienthello == NULL)
6157 *out = sc->clienthello->session_id;
6158 return sc->clienthello->session_id_len;
6161 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6163 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6168 if (sc->clienthello == NULL)
6171 *out = PACKET_data(&sc->clienthello->ciphersuites);
6172 return PACKET_remaining(&sc->clienthello->ciphersuites);
6175 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6177 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6182 if (sc->clienthello == NULL)
6185 *out = sc->clienthello->compressions;
6186 return sc->clienthello->compressions_len;
6189 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6194 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6199 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6201 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6202 ext = sc->clienthello->pre_proc_exts + i;
6211 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6212 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6215 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6216 ext = sc->clienthello->pre_proc_exts + i;
6218 if (ext->received_order >= num)
6220 present[ext->received_order] = ext->type;
6227 OPENSSL_free(present);
6231 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6235 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6240 if (sc->clienthello == NULL || num_exts == NULL)
6242 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6243 ext = sc->clienthello->pre_proc_exts + i;
6255 if (*num_exts < num)
6257 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6258 ext = sc->clienthello->pre_proc_exts + i;
6260 if (ext->received_order >= num)
6262 exts[ext->received_order] = ext->type;
6269 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6274 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6279 if (sc->clienthello == NULL)
6281 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6282 r = sc->clienthello->pre_proc_exts + i;
6283 if (r->present && r->type == type) {
6285 *out = PACKET_data(&r->data);
6287 *outlen = PACKET_remaining(&r->data);
6294 int SSL_free_buffers(SSL *ssl)
6297 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6304 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6307 RECORD_LAYER_release(rl);
6311 int SSL_alloc_buffers(SSL *ssl)
6313 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6318 return ssl3_setup_buffers(sc);
6321 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6323 ctx->keylog_callback = cb;
6326 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6328 return ctx->keylog_callback;
6331 static int nss_keylog_int(const char *prefix,
6333 const uint8_t *parameter_1,
6334 size_t parameter_1_len,
6335 const uint8_t *parameter_2,
6336 size_t parameter_2_len)
6339 char *cursor = NULL;
6343 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6345 if (sctx->keylog_callback == NULL)
6349 * Our output buffer will contain the following strings, rendered with
6350 * space characters in between, terminated by a NULL character: first the
6351 * prefix, then the first parameter, then the second parameter. The
6352 * meaning of each parameter depends on the specific key material being
6353 * logged. Note that the first and second parameters are encoded in
6354 * hexadecimal, so we need a buffer that is twice their lengths.
6356 prefix_len = strlen(prefix);
6357 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6358 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6359 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6363 strcpy(cursor, prefix);
6364 cursor += prefix_len;
6367 for (i = 0; i < parameter_1_len; i++) {
6368 sprintf(cursor, "%02x", parameter_1[i]);
6373 for (i = 0; i < parameter_2_len; i++) {
6374 sprintf(cursor, "%02x", parameter_2[i]);
6379 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6380 OPENSSL_clear_free(out, out_len);
6385 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6386 const uint8_t *encrypted_premaster,
6387 size_t encrypted_premaster_len,
6388 const uint8_t *premaster,
6389 size_t premaster_len)
6391 if (encrypted_premaster_len < 8) {
6392 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6396 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6397 return nss_keylog_int("RSA",
6399 encrypted_premaster,
6405 int ssl_log_secret(SSL_CONNECTION *sc,
6407 const uint8_t *secret,
6410 return nss_keylog_int(label,
6412 sc->s3.client_random,
6418 #define SSLV2_CIPHER_LEN 3
6420 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6424 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6426 if (PACKET_remaining(cipher_suites) == 0) {
6427 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6431 if (PACKET_remaining(cipher_suites) % n != 0) {
6432 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6436 OPENSSL_free(s->s3.tmp.ciphers_raw);
6437 s->s3.tmp.ciphers_raw = NULL;
6438 s->s3.tmp.ciphers_rawlen = 0;
6441 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6442 PACKET sslv2ciphers = *cipher_suites;
6443 unsigned int leadbyte;
6447 * We store the raw ciphers list in SSLv3+ format so we need to do some
6448 * preprocessing to convert the list first. If there are any SSLv2 only
6449 * ciphersuites with a non-zero leading byte then we are going to
6450 * slightly over allocate because we won't store those. But that isn't a
6453 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6454 s->s3.tmp.ciphers_raw = raw;
6456 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6459 for (s->s3.tmp.ciphers_rawlen = 0;
6460 PACKET_remaining(&sslv2ciphers) > 0;
6461 raw += TLS_CIPHER_LEN) {
6462 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6464 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6467 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6468 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6469 OPENSSL_free(s->s3.tmp.ciphers_raw);
6470 s->s3.tmp.ciphers_raw = NULL;
6471 s->s3.tmp.ciphers_rawlen = 0;
6475 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6477 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6478 &s->s3.tmp.ciphers_rawlen)) {
6479 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6485 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6486 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6487 STACK_OF(SSL_CIPHER) **scsvs)
6490 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6495 if (!PACKET_buf_init(&pkt, bytes, len))
6497 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6500 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6501 STACK_OF(SSL_CIPHER) **skp,
6502 STACK_OF(SSL_CIPHER) **scsvs_out,
6503 int sslv2format, int fatal)
6505 const SSL_CIPHER *c;
6506 STACK_OF(SSL_CIPHER) *sk = NULL;
6507 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6509 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6510 unsigned char cipher[SSLV2_CIPHER_LEN];
6512 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6514 if (PACKET_remaining(cipher_suites) == 0) {
6516 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6518 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6522 if (PACKET_remaining(cipher_suites) % n != 0) {
6524 SSLfatal(s, SSL_AD_DECODE_ERROR,
6525 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6527 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6531 sk = sk_SSL_CIPHER_new_null();
6532 scsvs = sk_SSL_CIPHER_new_null();
6533 if (sk == NULL || scsvs == NULL) {
6535 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6537 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6541 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6543 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6544 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6545 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6547 if (sslv2format && cipher[0] != '\0')
6550 /* For SSLv2-compat, ignore leading 0-byte. */
6551 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6553 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6554 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6556 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6558 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6563 if (PACKET_remaining(cipher_suites) > 0) {
6565 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6567 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6574 sk_SSL_CIPHER_free(sk);
6575 if (scsvs_out != NULL)
6578 sk_SSL_CIPHER_free(scsvs);
6581 sk_SSL_CIPHER_free(sk);
6582 sk_SSL_CIPHER_free(scsvs);
6586 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6588 ctx->max_early_data = max_early_data;
6593 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6595 return ctx->max_early_data;
6598 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6600 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6605 sc->max_early_data = max_early_data;
6610 uint32_t SSL_get_max_early_data(const SSL *s)
6612 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6617 return sc->max_early_data;
6620 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6622 ctx->recv_max_early_data = recv_max_early_data;
6627 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6629 return ctx->recv_max_early_data;
6632 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6634 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6639 sc->recv_max_early_data = recv_max_early_data;
6644 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6646 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6651 return sc->recv_max_early_data;
6654 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6656 /* Return any active Max Fragment Len extension */
6657 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6658 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6660 /* return current SSL connection setting */
6661 return sc->max_send_fragment;
6664 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6666 /* Return a value regarding an active Max Fragment Len extension */
6667 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6668 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6669 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6671 /* else limit |split_send_fragment| to current |max_send_fragment| */
6672 if (sc->split_send_fragment > sc->max_send_fragment)
6673 return sc->max_send_fragment;
6675 /* return current SSL connection setting */
6676 return sc->split_send_fragment;
6679 int SSL_stateless(SSL *s)
6682 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6684 /* TODO(QUIC): This will need further work. */
6688 /* Ensure there is no state left over from a previous invocation */
6694 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6695 ret = SSL_accept(s);
6696 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6698 if (ret > 0 && sc->ext.cookieok)
6701 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6707 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6709 ctx->pha_enabled = val;
6712 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6714 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6719 sc->pha_enabled = val;
6722 int SSL_verify_client_post_handshake(SSL *ssl)
6724 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6729 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6730 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6734 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6738 if (!SSL_is_init_finished(ssl)) {
6739 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6743 switch (sc->post_handshake_auth) {
6745 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6748 case SSL_PHA_EXT_SENT:
6749 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6751 case SSL_PHA_EXT_RECEIVED:
6753 case SSL_PHA_REQUEST_PENDING:
6754 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6756 case SSL_PHA_REQUESTED:
6757 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6761 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6763 /* checks verify_mode and algorithm_auth */
6764 if (!send_certificate_request(sc)) {
6765 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6766 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6770 ossl_statem_set_in_init(sc, 1);
6774 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6775 SSL_CTX_generate_session_ticket_fn gen_cb,
6776 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6779 ctx->generate_ticket_cb = gen_cb;
6780 ctx->decrypt_ticket_cb = dec_cb;
6781 ctx->ticket_cb_data = arg;
6785 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6786 SSL_allow_early_data_cb_fn cb,
6789 ctx->allow_early_data_cb = cb;
6790 ctx->allow_early_data_cb_data = arg;
6793 void SSL_set_allow_early_data_cb(SSL *s,
6794 SSL_allow_early_data_cb_fn cb,
6797 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6802 sc->allow_early_data_cb = cb;
6803 sc->allow_early_data_cb_data = arg;
6806 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6808 const char *properties)
6810 const EVP_CIPHER *ciph;
6812 ciph = tls_get_cipher_from_engine(nid);
6817 * If there is no engine cipher then we do an explicit fetch. This may fail
6818 * and that could be ok
6821 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6827 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6829 /* Don't up-ref an implicit EVP_CIPHER */
6830 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6834 * The cipher was explicitly fetched and therefore it is safe to cast
6837 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6840 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6845 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6847 * The cipher was explicitly fetched and therefore it is safe to cast
6850 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6854 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6856 const char *properties)
6860 md = tls_get_digest_from_engine(nid);
6864 /* Otherwise we do an explicit fetch */
6866 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6871 int ssl_evp_md_up_ref(const EVP_MD *md)
6873 /* Don't up-ref an implicit EVP_MD */
6874 if (EVP_MD_get0_provider(md) == NULL)
6878 * The digest was explicitly fetched and therefore it is safe to cast
6881 return EVP_MD_up_ref((EVP_MD *)md);
6884 void ssl_evp_md_free(const EVP_MD *md)
6889 if (EVP_MD_get0_provider(md) != NULL) {
6891 * The digest was explicitly fetched and therefore it is safe to cast
6894 EVP_MD_free((EVP_MD *)md);
6898 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6900 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6905 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6906 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6907 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6910 EVP_PKEY_free(sc->cert->dh_tmp);
6911 sc->cert->dh_tmp = dhpkey;
6915 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6917 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6918 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6919 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6922 EVP_PKEY_free(ctx->cert->dh_tmp);
6923 ctx->cert->dh_tmp = dhpkey;