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 (ctx->default_read_buf_len > 0)
816 SSL_set_default_read_buffer_len(ssl, ctx->default_read_buf_len);
819 s->ext.debug_arg = NULL;
820 s->ext.ticket_expected = 0;
821 s->ext.status_type = ctx->ext.status_type;
822 s->ext.status_expected = 0;
823 s->ext.ocsp.ids = NULL;
824 s->ext.ocsp.exts = NULL;
825 s->ext.ocsp.resp = NULL;
826 s->ext.ocsp.resp_len = 0;
828 s->session_ctx = ctx;
829 if (ctx->ext.ecpointformats) {
830 s->ext.ecpointformats =
831 OPENSSL_memdup(ctx->ext.ecpointformats,
832 ctx->ext.ecpointformats_len);
833 if (!s->ext.ecpointformats) {
834 s->ext.ecpointformats_len = 0;
837 s->ext.ecpointformats_len =
838 ctx->ext.ecpointformats_len;
840 if (ctx->ext.supportedgroups) {
841 s->ext.supportedgroups =
842 OPENSSL_memdup(ctx->ext.supportedgroups,
843 ctx->ext.supportedgroups_len
844 * sizeof(*ctx->ext.supportedgroups));
845 if (!s->ext.supportedgroups) {
846 s->ext.supportedgroups_len = 0;
849 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
852 #ifndef OPENSSL_NO_NEXTPROTONEG
856 if (ctx->ext.alpn != NULL) {
857 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
858 if (s->ext.alpn == NULL) {
862 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
863 s->ext.alpn_len = ctx->ext.alpn_len;
866 s->verified_chain = NULL;
867 s->verify_result = X509_V_OK;
869 s->default_passwd_callback = ctx->default_passwd_callback;
870 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
872 s->key_update = SSL_KEY_UPDATE_NONE;
874 s->allow_early_data_cb = ctx->allow_early_data_cb;
875 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
877 if (!ssl->method->ssl_init(ssl))
880 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
885 #ifndef OPENSSL_NO_PSK
886 s->psk_client_callback = ctx->psk_client_callback;
887 s->psk_server_callback = ctx->psk_server_callback;
889 s->psk_find_session_cb = ctx->psk_find_session_cb;
890 s->psk_use_session_cb = ctx->psk_use_session_cb;
892 s->async_cb = ctx->async_cb;
893 s->async_cb_arg = ctx->async_cb_arg;
897 #ifndef OPENSSL_NO_CT
898 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
899 ctx->ct_validation_callback_arg))
906 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
910 int SSL_is_dtls(const SSL *s)
912 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
917 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
920 int SSL_up_ref(SSL *s)
924 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
927 REF_PRINT_COUNT("SSL", s);
928 REF_ASSERT_ISNT(i < 2);
929 return ((i > 1) ? 1 : 0);
932 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
933 unsigned int sid_ctx_len)
935 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
936 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
939 ctx->sid_ctx_length = sid_ctx_len;
940 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
945 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
946 unsigned int sid_ctx_len)
948 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
953 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
954 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
957 sc->sid_ctx_length = sid_ctx_len;
958 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
963 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
965 if (!CRYPTO_THREAD_write_lock(ctx->lock))
967 ctx->generate_session_id = cb;
968 CRYPTO_THREAD_unlock(ctx->lock);
972 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
974 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
976 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
978 sc->generate_session_id = cb;
979 CRYPTO_THREAD_unlock(ssl->lock);
983 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
987 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
988 * we can "construct" a session to give us the desired check - i.e. to
989 * find if there's a session in the hash table that would conflict with
990 * any new session built out of this id/id_len and the ssl_version in use
994 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
996 if (sc == NULL || id_len > sizeof(r.session_id))
999 r.ssl_version = sc->version;
1000 r.session_id_length = id_len;
1001 memcpy(r.session_id, id, id_len);
1003 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1005 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1006 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1010 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1012 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1015 int SSL_set_purpose(SSL *s, int purpose)
1017 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1022 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1025 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1027 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1030 int SSL_set_trust(SSL *s, int trust)
1032 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1037 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1040 int SSL_set1_host(SSL *s, const char *hostname)
1042 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1047 /* If a hostname is provided and parses as an IP address,
1048 * treat it as such. */
1049 if (hostname != NULL
1050 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1053 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1056 int SSL_add1_host(SSL *s, const char *hostname)
1058 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1063 /* If a hostname is provided and parses as an IP address,
1064 * treat it as such. */
1067 ASN1_OCTET_STRING *ip;
1070 ip = a2i_IPADDRESS(hostname);
1072 /* We didn't want it; only to check if it *is* an IP address */
1073 ASN1_OCTET_STRING_free(ip);
1075 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1078 OPENSSL_free(old_ip);
1079 /* There can be only one IP address */
1083 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1087 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1090 void SSL_set_hostflags(SSL *s, unsigned int flags)
1092 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1097 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1100 const char *SSL_get0_peername(SSL *s)
1102 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1107 return X509_VERIFY_PARAM_get0_peername(sc->param);
1110 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1112 return dane_ctx_enable(&ctx->dane);
1115 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1117 unsigned long orig = ctx->dane.flags;
1119 ctx->dane.flags |= flags;
1123 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1125 unsigned long orig = ctx->dane.flags;
1127 ctx->dane.flags &= ~flags;
1131 int SSL_dane_enable(SSL *s, const char *basedomain)
1134 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1140 if (s->ctx->dane.mdmax == 0) {
1141 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1144 if (dane->trecs != NULL) {
1145 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1150 * Default SNI name. This rejects empty names, while set1_host below
1151 * accepts them and disables host name checks. To avoid side-effects with
1152 * invalid input, set the SNI name first.
1154 if (sc->ext.hostname == NULL) {
1155 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1156 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1161 /* Primary RFC6125 reference identifier */
1162 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1163 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1169 dane->dctx = &s->ctx->dane;
1170 dane->trecs = sk_danetls_record_new_null();
1172 if (dane->trecs == NULL) {
1173 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1179 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1182 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1187 orig = sc->dane.flags;
1189 sc->dane.flags |= flags;
1193 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1196 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1201 orig = sc->dane.flags;
1203 sc->dane.flags &= ~flags;
1207 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1210 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1217 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1221 *mcert = dane->mcert;
1223 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1228 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1229 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1232 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1239 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1243 *usage = dane->mtlsa->usage;
1245 *selector = dane->mtlsa->selector;
1247 *mtype = dane->mtlsa->mtype;
1249 *data = dane->mtlsa->data;
1251 *dlen = dane->mtlsa->dlen;
1256 SSL_DANE *SSL_get0_dane(SSL *s)
1258 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1266 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1267 uint8_t mtype, const unsigned char *data, size_t dlen)
1269 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1274 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1277 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1280 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1283 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1285 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1288 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1290 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1295 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1298 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1303 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1305 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1313 void SSL_certs_clear(SSL *s)
1315 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1320 ssl_cert_clear_certs(sc->cert);
1323 void SSL_free(SSL *s)
1329 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1330 REF_PRINT_COUNT("SSL", s);
1333 REF_ASSERT_ISNT(i < 0);
1335 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1337 if (s->method != NULL)
1338 s->method->ssl_free(s);
1340 SSL_CTX_free(s->ctx);
1341 CRYPTO_THREAD_lock_free(s->lock);
1346 void ossl_ssl_connection_free(SSL *ssl)
1350 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1354 if (s->rrlmethod != NULL)
1355 s->rrlmethod->free(s->rrl); /* Ignore return value */
1356 BIO_free(s->rrlnext);
1358 X509_VERIFY_PARAM_free(s->param);
1359 dane_final(&s->dane);
1361 RECORD_LAYER_release(&s->rlayer);
1363 /* Ignore return value */
1364 ssl_free_wbio_buffer(s);
1366 BIO_free_all(s->wbio);
1368 BIO_free_all(s->rbio);
1371 BUF_MEM_free(s->init_buf);
1373 /* add extra stuff */
1374 sk_SSL_CIPHER_free(s->cipher_list);
1375 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1376 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1377 sk_SSL_CIPHER_free(s->peer_ciphers);
1379 /* Make the next call work :-) */
1380 if (s->session != NULL) {
1381 ssl_clear_bad_session(s);
1382 SSL_SESSION_free(s->session);
1384 SSL_SESSION_free(s->psksession);
1385 OPENSSL_free(s->psksession_id);
1389 ssl_cert_free(s->cert);
1390 OPENSSL_free(s->shared_sigalgs);
1391 /* Free up if allocated */
1393 OPENSSL_free(s->ext.hostname);
1394 SSL_CTX_free(s->session_ctx);
1395 OPENSSL_free(s->ext.ecpointformats);
1396 OPENSSL_free(s->ext.peer_ecpointformats);
1397 OPENSSL_free(s->ext.supportedgroups);
1398 OPENSSL_free(s->ext.peer_supportedgroups);
1399 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1400 #ifndef OPENSSL_NO_OCSP
1401 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1403 #ifndef OPENSSL_NO_CT
1404 SCT_LIST_free(s->scts);
1405 OPENSSL_free(s->ext.scts);
1407 OPENSSL_free(s->ext.ocsp.resp);
1408 OPENSSL_free(s->ext.alpn);
1409 OPENSSL_free(s->ext.tls13_cookie);
1410 if (s->clienthello != NULL)
1411 OPENSSL_free(s->clienthello->pre_proc_exts);
1412 OPENSSL_free(s->clienthello);
1413 OPENSSL_free(s->pha_context);
1414 EVP_MD_CTX_free(s->pha_dgst);
1416 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1417 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1419 OSSL_STACK_OF_X509_free(s->verified_chain);
1421 if (ssl->method != NULL)
1422 ssl->method->ssl_deinit(ssl);
1424 ASYNC_WAIT_CTX_free(s->waitctx);
1426 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1427 OPENSSL_free(s->ext.npn);
1430 #ifndef OPENSSL_NO_SRTP
1431 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1435 void SSL_set0_rbio(SSL *s, BIO *rbio)
1437 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1442 BIO_free_all(sc->rbio);
1444 sc->rrlmethod->set1_bio(sc->rrl, sc->rbio);
1447 void SSL_set0_wbio(SSL *s, BIO *wbio)
1449 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1455 * If the output buffering BIO is still in place, remove it
1457 if (sc->bbio != NULL)
1458 sc->wbio = BIO_pop(sc->wbio);
1460 BIO_free_all(sc->wbio);
1463 /* Re-attach |bbio| to the new |wbio|. */
1464 if (sc->bbio != NULL)
1465 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1468 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1471 * For historical reasons, this function has many different cases in
1472 * ownership handling.
1475 /* If nothing has changed, do nothing */
1476 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1480 * If the two arguments are equal then one fewer reference is granted by the
1481 * caller than we want to take
1483 if (rbio != NULL && rbio == wbio)
1487 * If only the wbio is changed only adopt one reference.
1489 if (rbio == SSL_get_rbio(s)) {
1490 SSL_set0_wbio(s, wbio);
1494 * There is an asymmetry here for historical reasons. If only the rbio is
1495 * changed AND the rbio and wbio were originally different, then we only
1496 * adopt one reference.
1498 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1499 SSL_set0_rbio(s, rbio);
1503 /* Otherwise, adopt both references. */
1504 SSL_set0_rbio(s, rbio);
1505 SSL_set0_wbio(s, wbio);
1508 BIO *SSL_get_rbio(const SSL *s)
1510 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1518 BIO *SSL_get_wbio(const SSL *s)
1520 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1525 if (sc->bbio != NULL) {
1527 * If |bbio| is active, the true caller-configured BIO is its
1530 return BIO_next(sc->bbio);
1535 int SSL_get_fd(const SSL *s)
1537 return SSL_get_rfd(s);
1540 int SSL_get_rfd(const SSL *s)
1545 b = SSL_get_rbio(s);
1546 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1548 BIO_get_fd(r, &ret);
1552 int SSL_get_wfd(const SSL *s)
1557 b = SSL_get_wbio(s);
1558 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1560 BIO_get_fd(r, &ret);
1564 #ifndef OPENSSL_NO_SOCK
1565 int SSL_set_fd(SSL *s, int fd)
1570 bio = BIO_new(BIO_s_socket());
1573 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1576 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1577 SSL_set_bio(s, bio, bio);
1578 #ifndef OPENSSL_NO_KTLS
1580 * The new socket is created successfully regardless of ktls_enable.
1581 * ktls_enable doesn't change any functionality of the socket, except
1582 * changing the setsockopt to enable the processing of ktls_start.
1583 * Thus, it is not a problem to call it for non-TLS sockets.
1586 #endif /* OPENSSL_NO_KTLS */
1592 int SSL_set_wfd(SSL *s, int fd)
1594 BIO *rbio = SSL_get_rbio(s);
1596 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1597 || (int)BIO_get_fd(rbio, NULL) != fd) {
1598 BIO *bio = BIO_new(BIO_s_socket());
1601 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1604 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1605 SSL_set0_wbio(s, bio);
1606 #ifndef OPENSSL_NO_KTLS
1608 * The new socket is created successfully regardless of ktls_enable.
1609 * ktls_enable doesn't change any functionality of the socket, except
1610 * changing the setsockopt to enable the processing of ktls_start.
1611 * Thus, it is not a problem to call it for non-TLS sockets.
1614 #endif /* OPENSSL_NO_KTLS */
1617 SSL_set0_wbio(s, rbio);
1622 int SSL_set_rfd(SSL *s, int fd)
1624 BIO *wbio = SSL_get_wbio(s);
1626 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1627 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1628 BIO *bio = BIO_new(BIO_s_socket());
1631 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1634 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1635 SSL_set0_rbio(s, bio);
1638 SSL_set0_rbio(s, wbio);
1645 /* return length of latest Finished message we sent, copy to 'buf' */
1646 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1649 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1654 ret = sc->s3.tmp.finish_md_len;
1657 memcpy(buf, sc->s3.tmp.finish_md, count);
1661 /* return length of latest Finished message we expected, copy to 'buf' */
1662 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1665 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1670 ret = sc->s3.tmp.peer_finish_md_len;
1673 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1677 int SSL_get_verify_mode(const SSL *s)
1679 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1684 return sc->verify_mode;
1687 int SSL_get_verify_depth(const SSL *s)
1689 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1694 return X509_VERIFY_PARAM_get_depth(sc->param);
1697 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1698 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1703 return sc->verify_callback;
1706 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1708 return ctx->verify_mode;
1711 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1713 return X509_VERIFY_PARAM_get_depth(ctx->param);
1716 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1717 return ctx->default_verify_callback;
1720 void SSL_set_verify(SSL *s, int mode,
1721 int (*callback) (int ok, X509_STORE_CTX *ctx))
1723 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1728 sc->verify_mode = mode;
1729 if (callback != NULL)
1730 sc->verify_callback = callback;
1733 void SSL_set_verify_depth(SSL *s, int depth)
1735 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1740 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1743 void SSL_set_read_ahead(SSL *s, int yes)
1745 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1750 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1753 int SSL_get_read_ahead(const SSL *s)
1755 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1760 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1763 int SSL_pending(const SSL *s)
1765 size_t pending = s->method->ssl_pending(s);
1768 * SSL_pending cannot work properly if read-ahead is enabled
1769 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1770 * impossible to fix since SSL_pending cannot report errors that may be
1771 * observed while scanning the new data. (Note that SSL_pending() is
1772 * often used as a boolean value, so we'd better not return -1.)
1774 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1775 * we just return INT_MAX.
1777 return pending < INT_MAX ? (int)pending : INT_MAX;
1780 int SSL_has_pending(const SSL *s)
1783 * Similar to SSL_pending() but returns a 1 to indicate that we have
1784 * processed or unprocessed data available or 0 otherwise (as opposed to the
1785 * number of bytes available). Unlike SSL_pending() this will take into
1786 * account read_ahead data. A 1 return simply indicates that we have data.
1787 * That data may not result in any application data, or we may fail to parse
1788 * the records for some reason.
1790 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1792 /* Check buffered app data if any first */
1793 if (SSL_CONNECTION_IS_DTLS(sc)) {
1794 DTLS1_RECORD_DATA *rdata;
1797 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1798 while ((item = pqueue_next(&iter)) != NULL) {
1800 if (rdata->rrec.length > 0)
1805 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1808 return RECORD_LAYER_read_pending(&sc->rlayer);
1811 X509 *SSL_get1_peer_certificate(const SSL *s)
1813 X509 *r = SSL_get0_peer_certificate(s);
1821 X509 *SSL_get0_peer_certificate(const SSL *s)
1823 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1828 if (sc->session == NULL)
1831 return sc->session->peer;
1834 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1837 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1842 if (sc->session == NULL)
1845 r = sc->session->peer_chain;
1848 * If we are a client, cert_chain includes the peer's own certificate; if
1849 * we are a server, it does not.
1856 * Now in theory, since the calling process own 't' it should be safe to
1857 * modify. We need to be able to read f without being hassled
1859 int SSL_copy_session_id(SSL *t, const SSL *f)
1862 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1863 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1864 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1866 if (tsc == NULL || fsc == NULL)
1869 /* Do we need to do SSL locking? */
1870 if (!SSL_set_session(t, SSL_get_session(f))) {
1875 * what if we are setup for one protocol version but want to talk another
1877 if (t->method != f->method) {
1878 t->method->ssl_deinit(t);
1879 t->method = f->method;
1880 if (t->method->ssl_init(t) == 0)
1884 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1885 ssl_cert_free(tsc->cert);
1886 tsc->cert = fsc->cert;
1887 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1894 /* Fix this so it checks all the valid key/cert options */
1895 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1897 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1898 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1901 if (ctx->cert->key->privatekey == NULL) {
1902 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1905 return X509_check_private_key
1906 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1909 /* Fix this function so that it takes an optional type parameter */
1910 int SSL_check_private_key(const SSL *ssl)
1912 const SSL_CONNECTION *sc;
1914 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1915 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1918 if (sc->cert->key->x509 == NULL) {
1919 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1922 if (sc->cert->key->privatekey == NULL) {
1923 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1926 return X509_check_private_key(sc->cert->key->x509,
1927 sc->cert->key->privatekey);
1930 int SSL_waiting_for_async(SSL *s)
1932 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1943 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1945 ASYNC_WAIT_CTX *ctx;
1946 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1951 if ((ctx = sc->waitctx) == NULL)
1953 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1956 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1957 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1959 ASYNC_WAIT_CTX *ctx;
1960 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1965 if ((ctx = sc->waitctx) == NULL)
1967 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1971 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1973 ctx->async_cb = callback;
1977 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1979 ctx->async_cb_arg = arg;
1983 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1985 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1990 sc->async_cb = callback;
1994 int SSL_set_async_callback_arg(SSL *s, void *arg)
1996 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2001 sc->async_cb_arg = arg;
2005 int SSL_get_async_status(SSL *s, int *status)
2007 ASYNC_WAIT_CTX *ctx;
2008 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2013 if ((ctx = sc->waitctx) == NULL)
2015 *status = ASYNC_WAIT_CTX_get_status(ctx);
2019 int SSL_accept(SSL *s)
2021 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2026 if (sc->handshake_func == NULL) {
2027 /* Not properly initialized yet */
2028 SSL_set_accept_state(s);
2031 return SSL_do_handshake(s);
2034 int SSL_connect(SSL *s)
2036 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2041 if (sc->handshake_func == NULL) {
2042 /* Not properly initialized yet */
2043 SSL_set_connect_state(s);
2046 return SSL_do_handshake(s);
2049 long SSL_get_default_timeout(const SSL *s)
2051 return s->method->get_timeout();
2054 static int ssl_async_wait_ctx_cb(void *arg)
2056 SSL *s = (SSL *)arg;
2057 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2062 return sc->async_cb(s, sc->async_cb_arg);
2065 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2066 int (*func) (void *))
2069 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2074 if (sc->waitctx == NULL) {
2075 sc->waitctx = ASYNC_WAIT_CTX_new();
2076 if (sc->waitctx == NULL)
2078 if (sc->async_cb != NULL
2079 && !ASYNC_WAIT_CTX_set_callback
2080 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2084 sc->rwstate = SSL_NOTHING;
2085 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2086 sizeof(struct ssl_async_args))) {
2088 sc->rwstate = SSL_NOTHING;
2089 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2092 sc->rwstate = SSL_ASYNC_PAUSED;
2095 sc->rwstate = SSL_ASYNC_NO_JOBS;
2101 sc->rwstate = SSL_NOTHING;
2102 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2103 /* Shouldn't happen */
2108 static int ssl_io_intern(void *vargs)
2110 struct ssl_async_args *args;
2116 args = (struct ssl_async_args *)vargs;
2120 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2123 switch (args->type) {
2125 return args->f.func_read(s, buf, num, &sc->asyncrw);
2127 return args->f.func_write(s, buf, num, &sc->asyncrw);
2129 return args->f.func_other(s);
2134 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2136 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2141 if (sc->handshake_func == NULL) {
2142 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2146 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2147 sc->rwstate = SSL_NOTHING;
2151 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2152 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2153 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2157 * If we are a client and haven't received the ServerHello etc then we
2160 ossl_statem_check_finish_init(sc, 0);
2162 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2163 struct ssl_async_args args;
2169 args.type = READFUNC;
2170 args.f.func_read = s->method->ssl_read;
2172 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2173 *readbytes = sc->asyncrw;
2176 return s->method->ssl_read(s, buf, num, readbytes);
2180 int SSL_read(SSL *s, void *buf, int num)
2186 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2190 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2193 * The cast is safe here because ret should be <= INT_MAX because num is
2197 ret = (int)readbytes;
2202 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2204 int ret = ssl_read_internal(s, buf, num, readbytes);
2211 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2214 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2216 /* TODO(QUIC): This will need special handling for QUIC */
2221 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2222 return SSL_READ_EARLY_DATA_ERROR;
2225 switch (sc->early_data_state) {
2226 case SSL_EARLY_DATA_NONE:
2227 if (!SSL_in_before(s)) {
2228 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2229 return SSL_READ_EARLY_DATA_ERROR;
2233 case SSL_EARLY_DATA_ACCEPT_RETRY:
2234 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2235 ret = SSL_accept(s);
2238 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2239 return SSL_READ_EARLY_DATA_ERROR;
2243 case SSL_EARLY_DATA_READ_RETRY:
2244 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2245 sc->early_data_state = SSL_EARLY_DATA_READING;
2246 ret = SSL_read_ex(s, buf, num, readbytes);
2248 * State machine will update early_data_state to
2249 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2252 if (ret > 0 || (ret <= 0 && sc->early_data_state
2253 != SSL_EARLY_DATA_FINISHED_READING)) {
2254 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2255 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2256 : SSL_READ_EARLY_DATA_ERROR;
2259 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2262 return SSL_READ_EARLY_DATA_FINISH;
2265 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2266 return SSL_READ_EARLY_DATA_ERROR;
2270 int SSL_get_early_data_status(const SSL *s)
2272 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2274 /* TODO(QUIC): This will need special handling for QUIC */
2278 return sc->ext.early_data;
2281 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2283 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2288 if (sc->handshake_func == NULL) {
2289 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2293 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2296 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2297 struct ssl_async_args args;
2303 args.type = READFUNC;
2304 args.f.func_read = s->method->ssl_peek;
2306 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2307 *readbytes = sc->asyncrw;
2310 return s->method->ssl_peek(s, buf, num, readbytes);
2314 int SSL_peek(SSL *s, void *buf, int num)
2320 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2324 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2327 * The cast is safe here because ret should be <= INT_MAX because num is
2331 ret = (int)readbytes;
2337 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2339 int ret = ssl_peek_internal(s, buf, num, readbytes);
2346 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2348 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2353 if (sc->handshake_func == NULL) {
2354 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2358 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2359 sc->rwstate = SSL_NOTHING;
2360 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2364 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2365 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2366 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2367 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2370 /* If we are a client and haven't sent the Finished we better do that */
2371 ossl_statem_check_finish_init(sc, 1);
2373 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2375 struct ssl_async_args args;
2378 args.buf = (void *)buf;
2380 args.type = WRITEFUNC;
2381 args.f.func_write = s->method->ssl_write;
2383 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2384 *written = sc->asyncrw;
2387 return s->method->ssl_write(s, buf, num, written);
2391 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2394 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2399 if (sc->handshake_func == NULL) {
2400 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2404 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2405 sc->rwstate = SSL_NOTHING;
2406 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2410 if (!BIO_get_ktls_send(sc->wbio)) {
2411 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2415 /* If we have an alert to send, lets send it */
2416 if (sc->s3.alert_dispatch) {
2417 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2419 /* SSLfatal() already called if appropriate */
2422 /* if it went, fall through and send more stuff */
2425 sc->rwstate = SSL_WRITING;
2426 if (BIO_flush(sc->wbio) <= 0) {
2427 if (!BIO_should_retry(sc->wbio)) {
2428 sc->rwstate = SSL_NOTHING;
2431 set_sys_error(EAGAIN);
2437 #ifdef OPENSSL_NO_KTLS
2438 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2439 "can't call ktls_sendfile(), ktls disabled");
2442 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2444 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2445 if ((get_last_sys_error() == EAGAIN) ||
2446 (get_last_sys_error() == EINTR) ||
2447 (get_last_sys_error() == EBUSY))
2448 BIO_set_retry_write(sc->wbio);
2451 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2454 sc->rwstate = SSL_NOTHING;
2459 int SSL_write(SSL *s, const void *buf, int num)
2465 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2469 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2472 * The cast is safe here because ret should be <= INT_MAX because num is
2481 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2483 int ret = ssl_write_internal(s, buf, num, written);
2490 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2492 int ret, early_data_state;
2494 uint32_t partialwrite;
2495 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2497 /* TODO(QUIC): This will need special handling for QUIC */
2501 switch (sc->early_data_state) {
2502 case SSL_EARLY_DATA_NONE:
2504 || !SSL_in_before(s)
2505 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2506 && (sc->psk_use_session_cb == NULL))) {
2507 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2512 case SSL_EARLY_DATA_CONNECT_RETRY:
2513 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2514 ret = SSL_connect(s);
2517 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2522 case SSL_EARLY_DATA_WRITE_RETRY:
2523 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2525 * We disable partial write for early data because we don't keep track
2526 * of how many bytes we've written between the SSL_write_ex() call and
2527 * the flush if the flush needs to be retried)
2529 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2530 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2531 ret = SSL_write_ex(s, buf, num, &writtmp);
2532 sc->mode |= partialwrite;
2534 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2537 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2540 case SSL_EARLY_DATA_WRITE_FLUSH:
2541 /* The buffering BIO is still in place so we need to flush it */
2542 if (statem_flush(sc) != 1)
2545 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2548 case SSL_EARLY_DATA_FINISHED_READING:
2549 case SSL_EARLY_DATA_READ_RETRY:
2550 early_data_state = sc->early_data_state;
2551 /* We are a server writing to an unauthenticated client */
2552 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2553 ret = SSL_write_ex(s, buf, num, written);
2554 /* The buffering BIO is still in place */
2556 (void)BIO_flush(sc->wbio);
2557 sc->early_data_state = early_data_state;
2561 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2566 int SSL_shutdown(SSL *s)
2569 * Note that this function behaves differently from what one might
2570 * expect. Return values are 0 for no success (yet), 1 for success; but
2571 * calling it once is usually not enough, even if blocking I/O is used
2572 * (see ssl3_shutdown).
2574 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2579 if (sc->handshake_func == NULL) {
2580 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2584 if (!SSL_in_init(s)) {
2585 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2586 struct ssl_async_args args;
2588 memset(&args, 0, sizeof(args));
2590 args.type = OTHERFUNC;
2591 args.f.func_other = s->method->ssl_shutdown;
2593 return ssl_start_async_job(s, &args, ssl_io_intern);
2595 return s->method->ssl_shutdown(s);
2598 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2603 int SSL_key_update(SSL *s, int updatetype)
2605 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2610 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2611 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2615 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2616 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2617 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2621 if (!SSL_is_init_finished(s)) {
2622 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2626 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2627 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2631 ossl_statem_set_in_init(sc, 1);
2632 sc->key_update = updatetype;
2636 int SSL_get_key_update_type(const SSL *s)
2638 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2643 return sc->key_update;
2647 * Can we accept a renegotiation request? If yes, set the flag and
2648 * return 1 if yes. If not, raise error and return 0.
2650 static int can_renegotiate(const SSL_CONNECTION *sc)
2652 if (SSL_CONNECTION_IS_TLS13(sc)) {
2653 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2657 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2658 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2665 int SSL_renegotiate(SSL *s)
2667 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2672 if (!can_renegotiate(sc))
2675 sc->renegotiate = 1;
2676 sc->new_session = 1;
2677 return s->method->ssl_renegotiate(s);
2680 int SSL_renegotiate_abbreviated(SSL *s)
2682 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2687 if (!can_renegotiate(sc))
2690 sc->renegotiate = 1;
2691 sc->new_session = 0;
2692 return s->method->ssl_renegotiate(s);
2695 int SSL_renegotiate_pending(const SSL *s)
2697 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2703 * becomes true when negotiation is requested; false again once a
2704 * handshake has finished
2706 return (sc->renegotiate != 0);
2709 int SSL_new_session_ticket(SSL *s)
2711 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2716 /* If we are in init because we're sending tickets, okay to send more. */
2717 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2718 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2719 || !SSL_CONNECTION_IS_TLS13(sc))
2721 sc->ext.extra_tickets_expected++;
2722 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2723 ossl_statem_set_in_init(sc, 1);
2727 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2730 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2732 /* TODO(QUIC): Special handling for some ctrls will be needed */
2737 case SSL_CTRL_GET_READ_AHEAD:
2738 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2739 case SSL_CTRL_SET_READ_AHEAD:
2740 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2741 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2744 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2745 sc->msg_callback_arg = parg;
2749 return (sc->mode |= larg);
2750 case SSL_CTRL_CLEAR_MODE:
2751 return (sc->mode &= ~larg);
2752 case SSL_CTRL_GET_MAX_CERT_LIST:
2753 return (long)sc->max_cert_list;
2754 case SSL_CTRL_SET_MAX_CERT_LIST:
2757 l = (long)sc->max_cert_list;
2758 sc->max_cert_list = (size_t)larg;
2760 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2761 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2763 #ifndef OPENSSL_NO_KTLS
2764 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2766 #endif /* OPENSSL_NO_KTLS */
2767 sc->max_send_fragment = larg;
2768 if (sc->max_send_fragment < sc->split_send_fragment)
2769 sc->split_send_fragment = sc->max_send_fragment;
2771 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2772 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2774 sc->split_send_fragment = larg;
2776 case SSL_CTRL_SET_MAX_PIPELINES:
2777 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2779 sc->max_pipelines = larg;
2780 if (sc->rrlmethod->set_max_pipelines != NULL)
2781 sc->rrlmethod->set_max_pipelines(sc->rrl, (size_t)larg);
2783 case SSL_CTRL_GET_RI_SUPPORT:
2784 return sc->s3.send_connection_binding;
2785 case SSL_CTRL_SET_RETRY_VERIFY:
2786 sc->rwstate = SSL_RETRY_VERIFY;
2788 case SSL_CTRL_CERT_FLAGS:
2789 return (sc->cert->cert_flags |= larg);
2790 case SSL_CTRL_CLEAR_CERT_FLAGS:
2791 return (sc->cert->cert_flags &= ~larg);
2793 case SSL_CTRL_GET_RAW_CIPHERLIST:
2795 if (sc->s3.tmp.ciphers_raw == NULL)
2797 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2798 return (int)sc->s3.tmp.ciphers_rawlen;
2800 return TLS_CIPHER_LEN;
2802 case SSL_CTRL_GET_EXTMS_SUPPORT:
2803 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2805 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2809 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2810 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2811 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2812 &sc->min_proto_version);
2813 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2814 return sc->min_proto_version;
2815 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2816 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2817 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2818 &sc->max_proto_version);
2819 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2820 return sc->max_proto_version;
2822 return s->method->ssl_ctrl(s, cmd, larg, parg);
2826 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2828 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2834 case SSL_CTRL_SET_MSG_CALLBACK:
2835 sc->msg_callback = (void (*)
2836 (int write_p, int version, int content_type,
2837 const void *buf, size_t len, SSL *ssl,
2842 return s->method->ssl_callback_ctrl(s, cmd, fp);
2846 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2848 return ctx->sessions;
2851 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2855 if (ssl_tsan_lock(ctx)) {
2856 res = tsan_load(stat);
2857 ssl_tsan_unlock(ctx);
2862 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2865 /* For some cases with ctx == NULL perform syntax checks */
2868 case SSL_CTRL_SET_GROUPS_LIST:
2869 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2870 case SSL_CTRL_SET_SIGALGS_LIST:
2871 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2872 return tls1_set_sigalgs_list(NULL, parg, 0);
2879 case SSL_CTRL_GET_READ_AHEAD:
2880 return ctx->read_ahead;
2881 case SSL_CTRL_SET_READ_AHEAD:
2882 l = ctx->read_ahead;
2883 ctx->read_ahead = larg;
2886 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2887 ctx->msg_callback_arg = parg;
2890 case SSL_CTRL_GET_MAX_CERT_LIST:
2891 return (long)ctx->max_cert_list;
2892 case SSL_CTRL_SET_MAX_CERT_LIST:
2895 l = (long)ctx->max_cert_list;
2896 ctx->max_cert_list = (size_t)larg;
2899 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2902 l = (long)ctx->session_cache_size;
2903 ctx->session_cache_size = (size_t)larg;
2905 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2906 return (long)ctx->session_cache_size;
2907 case SSL_CTRL_SET_SESS_CACHE_MODE:
2908 l = ctx->session_cache_mode;
2909 ctx->session_cache_mode = larg;
2911 case SSL_CTRL_GET_SESS_CACHE_MODE:
2912 return ctx->session_cache_mode;
2914 case SSL_CTRL_SESS_NUMBER:
2915 return lh_SSL_SESSION_num_items(ctx->sessions);
2916 case SSL_CTRL_SESS_CONNECT:
2917 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2918 case SSL_CTRL_SESS_CONNECT_GOOD:
2919 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2920 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2921 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2922 case SSL_CTRL_SESS_ACCEPT:
2923 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2924 case SSL_CTRL_SESS_ACCEPT_GOOD:
2925 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2926 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2927 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2928 case SSL_CTRL_SESS_HIT:
2929 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2930 case SSL_CTRL_SESS_CB_HIT:
2931 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2932 case SSL_CTRL_SESS_MISSES:
2933 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2934 case SSL_CTRL_SESS_TIMEOUTS:
2935 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2936 case SSL_CTRL_SESS_CACHE_FULL:
2937 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2939 return (ctx->mode |= larg);
2940 case SSL_CTRL_CLEAR_MODE:
2941 return (ctx->mode &= ~larg);
2942 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2943 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2945 ctx->max_send_fragment = larg;
2946 if (ctx->max_send_fragment < ctx->split_send_fragment)
2947 ctx->split_send_fragment = ctx->max_send_fragment;
2949 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2950 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2952 ctx->split_send_fragment = larg;
2954 case SSL_CTRL_SET_MAX_PIPELINES:
2955 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2957 ctx->max_pipelines = larg;
2959 case SSL_CTRL_CERT_FLAGS:
2960 return (ctx->cert->cert_flags |= larg);
2961 case SSL_CTRL_CLEAR_CERT_FLAGS:
2962 return (ctx->cert->cert_flags &= ~larg);
2963 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2964 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2965 && ssl_set_version_bound(ctx->method->version, (int)larg,
2966 &ctx->min_proto_version);
2967 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2968 return ctx->min_proto_version;
2969 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2970 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2971 && ssl_set_version_bound(ctx->method->version, (int)larg,
2972 &ctx->max_proto_version);
2973 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2974 return ctx->max_proto_version;
2976 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2980 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2983 case SSL_CTRL_SET_MSG_CALLBACK:
2984 ctx->msg_callback = (void (*)
2985 (int write_p, int version, int content_type,
2986 const void *buf, size_t len, SSL *ssl,
2991 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2995 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3004 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3005 const SSL_CIPHER *const *bp)
3007 if ((*ap)->id > (*bp)->id)
3009 if ((*ap)->id < (*bp)->id)
3015 * return a STACK of the ciphers available for the SSL and in order of
3018 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3020 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3023 if (sc->cipher_list != NULL) {
3024 return sc->cipher_list;
3025 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3026 return s->ctx->cipher_list;
3032 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3034 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3036 if (sc == NULL || !sc->server)
3038 return sc->peer_ciphers;
3041 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3043 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3045 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3050 ciphers = SSL_get_ciphers(s);
3053 if (!ssl_set_client_disabled(sc))
3055 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3056 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3057 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3059 sk = sk_SSL_CIPHER_new_null();
3062 if (!sk_SSL_CIPHER_push(sk, c)) {
3063 sk_SSL_CIPHER_free(sk);
3071 /** return a STACK of the ciphers available for the SSL and in order of
3073 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3076 if (s->cipher_list_by_id != NULL)
3077 return s->cipher_list_by_id;
3078 else if (s->ssl.ctx != NULL
3079 && s->ssl.ctx->cipher_list_by_id != NULL)
3080 return s->ssl.ctx->cipher_list_by_id;
3085 /** The old interface to get the same thing as SSL_get_ciphers() */
3086 const char *SSL_get_cipher_list(const SSL *s, int n)
3088 const SSL_CIPHER *c;
3089 STACK_OF(SSL_CIPHER) *sk;
3093 sk = SSL_get_ciphers(s);
3094 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3096 c = sk_SSL_CIPHER_value(sk, n);
3102 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3104 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3107 return ctx->cipher_list;
3112 * Distinguish between ciphers controlled by set_ciphersuite() and
3113 * set_cipher_list() when counting.
3115 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3118 const SSL_CIPHER *c;
3122 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3123 c = sk_SSL_CIPHER_value(sk, i);
3124 if (c->min_tls >= TLS1_3_VERSION)
3131 /** specify the ciphers to be used by default by the SSL_CTX */
3132 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3134 STACK_OF(SSL_CIPHER) *sk;
3136 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3137 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3140 * ssl_create_cipher_list may return an empty stack if it was unable to
3141 * find a cipher matching the given rule string (for example if the rule
3142 * string specifies a cipher which has been disabled). This is not an
3143 * error as far as ssl_create_cipher_list is concerned, and hence
3144 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3148 else if (cipher_list_tls12_num(sk) == 0) {
3149 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3155 /** specify the ciphers to be used by the SSL */
3156 int SSL_set_cipher_list(SSL *s, const char *str)
3158 STACK_OF(SSL_CIPHER) *sk;
3159 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3164 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3165 &sc->cipher_list, &sc->cipher_list_by_id, str,
3167 /* see comment in SSL_CTX_set_cipher_list */
3170 else if (cipher_list_tls12_num(sk) == 0) {
3171 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3177 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3180 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3181 const SSL_CIPHER *c;
3183 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3189 || sc->peer_ciphers == NULL
3194 clntsk = sc->peer_ciphers;
3195 srvrsk = SSL_get_ciphers(s);
3196 if (clntsk == NULL || srvrsk == NULL)
3199 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3202 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3205 c = sk_SSL_CIPHER_value(clntsk, i);
3206 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3209 n = strlen(c->name);
3226 * Return the requested servername (SNI) value. Note that the behaviour varies
3228 * - whether this is called by the client or the server,
3229 * - if we are before or during/after the handshake,
3230 * - if a resumption or normal handshake is being attempted/has occurred
3231 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3233 * Note that only the host_name type is defined (RFC 3546).
3235 const char *SSL_get_servername(const SSL *s, const int type)
3237 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3244 * If we don't know if we are the client or the server yet then we assume
3247 server = sc->handshake_func == NULL ? 0 : sc->server;
3249 if (type != TLSEXT_NAMETYPE_host_name)
3255 * In TLSv1.3 on the server SNI is not associated with the session
3256 * but in TLSv1.2 or below it is.
3258 * Before the handshake:
3261 * During/after the handshake (TLSv1.2 or below resumption occurred):
3262 * - If a servername was accepted by the server in the original
3263 * handshake then it will return that servername, or NULL otherwise.
3265 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3266 * - The function will return the servername requested by the client in
3267 * this handshake or NULL if none was requested.
3269 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3270 return sc->session->ext.hostname;
3275 * Before the handshake:
3276 * - If a servername has been set via a call to
3277 * SSL_set_tlsext_host_name() then it will return that servername
3278 * - If one has not been set, but a TLSv1.2 resumption is being
3279 * attempted and the session from the original handshake had a
3280 * servername accepted by the server then it will return that
3282 * - Otherwise it returns NULL
3284 * During/after the handshake (TLSv1.2 or below resumption occurred):
3285 * - If the session from the original handshake had a servername accepted
3286 * by the server then it will return that servername.
3287 * - Otherwise it returns the servername set via
3288 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3290 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3291 * - It will return the servername set via SSL_set_tlsext_host_name()
3292 * (or NULL if it was not called).
3294 if (SSL_in_before(s)) {
3295 if (sc->ext.hostname == NULL
3296 && sc->session != NULL
3297 && sc->session->ssl_version != TLS1_3_VERSION)
3298 return sc->session->ext.hostname;
3300 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3301 && sc->session->ext.hostname != NULL)
3302 return sc->session->ext.hostname;
3306 return sc->ext.hostname;
3309 int SSL_get_servername_type(const SSL *s)
3311 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3312 return TLSEXT_NAMETYPE_host_name;
3317 * SSL_select_next_proto implements the standard protocol selection. It is
3318 * expected that this function is called from the callback set by
3319 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3320 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3321 * not included in the length. A byte string of length 0 is invalid. No byte
3322 * string may be truncated. The current, but experimental algorithm for
3323 * selecting the protocol is: 1) If the server doesn't support NPN then this
3324 * is indicated to the callback. In this case, the client application has to
3325 * abort the connection or have a default application level protocol. 2) If
3326 * the server supports NPN, but advertises an empty list then the client
3327 * selects the first protocol in its list, but indicates via the API that this
3328 * fallback case was enacted. 3) Otherwise, the client finds the first
3329 * protocol in the server's list that it supports and selects this protocol.
3330 * This is because it's assumed that the server has better information about
3331 * which protocol a client should use. 4) If the client doesn't support any
3332 * of the server's advertised protocols, then this is treated the same as
3333 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3334 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3336 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3337 const unsigned char *server,
3338 unsigned int server_len,
3339 const unsigned char *client, unsigned int client_len)
3342 const unsigned char *result;
3343 int status = OPENSSL_NPN_UNSUPPORTED;
3346 * For each protocol in server preference order, see if we support it.
3348 for (i = 0; i < server_len;) {
3349 for (j = 0; j < client_len;) {
3350 if (server[i] == client[j] &&
3351 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3352 /* We found a match */
3353 result = &server[i];
3354 status = OPENSSL_NPN_NEGOTIATED;
3364 /* There's no overlap between our protocols and the server's list. */
3366 status = OPENSSL_NPN_NO_OVERLAP;
3369 *out = (unsigned char *)result + 1;
3370 *outlen = result[0];
3374 #ifndef OPENSSL_NO_NEXTPROTONEG
3376 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3377 * client's requested protocol for this connection and returns 0. If the
3378 * client didn't request any protocol, then *data is set to NULL. Note that
3379 * the client can request any protocol it chooses. The value returned from
3380 * this function need not be a member of the list of supported protocols
3381 * provided by the callback.
3383 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3386 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3389 /* We have no other way to indicate error */
3395 *data = sc->ext.npn;
3396 if (*data == NULL) {
3399 *len = (unsigned int)sc->ext.npn_len;
3404 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3405 * a TLS server needs a list of supported protocols for Next Protocol
3406 * Negotiation. The returned list must be in wire format. The list is
3407 * returned by setting |out| to point to it and |outlen| to its length. This
3408 * memory will not be modified, but one should assume that the SSL* keeps a
3409 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3410 * wishes to advertise. Otherwise, no such extension will be included in the
3413 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3414 SSL_CTX_npn_advertised_cb_func cb,
3417 ctx->ext.npn_advertised_cb = cb;
3418 ctx->ext.npn_advertised_cb_arg = arg;
3422 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3423 * client needs to select a protocol from the server's provided list. |out|
3424 * must be set to point to the selected protocol (which may be within |in|).
3425 * The length of the protocol name must be written into |outlen|. The
3426 * server's advertised protocols are provided in |in| and |inlen|. The
3427 * callback can assume that |in| is syntactically valid. The client must
3428 * select a protocol. It is fatal to the connection if this callback returns
3429 * a value other than SSL_TLSEXT_ERR_OK.
3431 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3432 SSL_CTX_npn_select_cb_func cb,
3435 ctx->ext.npn_select_cb = cb;
3436 ctx->ext.npn_select_cb_arg = arg;
3440 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3444 if (protos_len < 2 || protos == NULL)
3447 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3448 if (protos[idx] == 0)
3451 return idx == protos_len;
3454 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3455 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3456 * length-prefixed strings). Returns 0 on success.
3458 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3459 unsigned int protos_len)
3461 unsigned char *alpn;
3463 if (protos_len == 0 || protos == NULL) {
3464 OPENSSL_free(ctx->ext.alpn);
3465 ctx->ext.alpn = NULL;
3466 ctx->ext.alpn_len = 0;
3469 /* Not valid per RFC */
3470 if (!alpn_value_ok(protos, protos_len))
3473 alpn = OPENSSL_memdup(protos, protos_len);
3475 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3478 OPENSSL_free(ctx->ext.alpn);
3479 ctx->ext.alpn = alpn;
3480 ctx->ext.alpn_len = protos_len;
3486 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3487 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3488 * length-prefixed strings). Returns 0 on success.
3490 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3491 unsigned int protos_len)
3493 unsigned char *alpn;
3494 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3499 if (protos_len == 0 || protos == NULL) {
3500 OPENSSL_free(sc->ext.alpn);
3501 sc->ext.alpn = NULL;
3502 sc->ext.alpn_len = 0;
3505 /* Not valid per RFC */
3506 if (!alpn_value_ok(protos, protos_len))
3509 alpn = OPENSSL_memdup(protos, protos_len);
3511 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3514 OPENSSL_free(sc->ext.alpn);
3515 sc->ext.alpn = alpn;
3516 sc->ext.alpn_len = protos_len;
3522 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3523 * called during ClientHello processing in order to select an ALPN protocol
3524 * from the client's list of offered protocols.
3526 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3527 SSL_CTX_alpn_select_cb_func cb,
3530 ctx->ext.alpn_select_cb = cb;
3531 ctx->ext.alpn_select_cb_arg = arg;
3535 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3536 * On return it sets |*data| to point to |*len| bytes of protocol name
3537 * (not including the leading length-prefix byte). If the server didn't
3538 * respond with a negotiated protocol then |*len| will be zero.
3540 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3543 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3546 /* We have no other way to indicate error */
3552 *data = sc->s3.alpn_selected;
3556 *len = (unsigned int)sc->s3.alpn_selected_len;
3559 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3560 const char *label, size_t llen,
3561 const unsigned char *context, size_t contextlen,
3564 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3569 if (sc->session == NULL
3570 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3573 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3575 contextlen, use_context);
3578 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3579 const char *label, size_t llen,
3580 const unsigned char *context,
3583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3588 if (sc->version != TLS1_3_VERSION)
3591 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3592 context, contextlen);
3595 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3597 const unsigned char *session_id = a->session_id;
3599 unsigned char tmp_storage[4];
3601 if (a->session_id_length < sizeof(tmp_storage)) {
3602 memset(tmp_storage, 0, sizeof(tmp_storage));
3603 memcpy(tmp_storage, a->session_id, a->session_id_length);
3604 session_id = tmp_storage;
3608 ((unsigned long)session_id[0]) |
3609 ((unsigned long)session_id[1] << 8L) |
3610 ((unsigned long)session_id[2] << 16L) |
3611 ((unsigned long)session_id[3] << 24L);
3616 * NB: If this function (or indeed the hash function which uses a sort of
3617 * coarser function than this one) is changed, ensure
3618 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3619 * being able to construct an SSL_SESSION that will collide with any existing
3620 * session with a matching session ID.
3622 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3624 if (a->ssl_version != b->ssl_version)
3626 if (a->session_id_length != b->session_id_length)
3628 return memcmp(a->session_id, b->session_id, a->session_id_length);
3632 * These wrapper functions should remain rather than redeclaring
3633 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3634 * variable. The reason is that the functions aren't static, they're exposed
3638 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3639 const SSL_METHOD *meth)
3641 SSL_CTX *ret = NULL;
3644 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3648 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3651 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3652 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3655 ret = OPENSSL_zalloc(sizeof(*ret));
3659 /* Init the reference counting before any call to SSL_CTX_free */
3660 ret->references = 1;
3661 ret->lock = CRYPTO_THREAD_lock_new();
3662 if (ret->lock == NULL) {
3663 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3668 #ifdef TSAN_REQUIRES_LOCKING
3669 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3670 if (ret->tsan_lock == NULL) {
3671 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3676 ret->libctx = libctx;
3677 if (propq != NULL) {
3678 ret->propq = OPENSSL_strdup(propq);
3679 if (ret->propq == NULL)
3684 ret->min_proto_version = 0;
3685 ret->max_proto_version = 0;
3686 ret->mode = SSL_MODE_AUTO_RETRY;
3687 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3688 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3689 /* We take the system default. */
3690 ret->session_timeout = meth->get_timeout();
3691 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3692 ret->verify_mode = SSL_VERIFY_NONE;
3693 if ((ret->cert = ssl_cert_new()) == NULL)
3696 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3697 if (ret->sessions == NULL)
3699 ret->cert_store = X509_STORE_new();
3700 if (ret->cert_store == NULL)
3702 #ifndef OPENSSL_NO_CT
3703 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3704 if (ret->ctlog_store == NULL)
3708 /* initialize cipher/digest methods table */
3709 if (!ssl_load_ciphers(ret))
3711 /* initialise sig algs */
3712 if (!ssl_setup_sig_algs(ret))
3716 if (!ssl_load_groups(ret))
3719 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3722 if (!ssl_create_cipher_list(ret,
3723 ret->tls13_ciphersuites,
3724 &ret->cipher_list, &ret->cipher_list_by_id,
3725 OSSL_default_cipher_list(), ret->cert)
3726 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3727 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3731 ret->param = X509_VERIFY_PARAM_new();
3732 if (ret->param == NULL)
3736 * If these aren't available from the provider we'll get NULL returns.
3737 * That's fine but will cause errors later if SSLv3 is negotiated
3739 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3740 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3742 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3745 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3748 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3751 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3754 /* No compression for DTLS */
3755 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3756 ret->comp_methods = SSL_COMP_get_compression_methods();
3758 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3759 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3761 /* Setup RFC5077 ticket keys */
3762 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3763 sizeof(ret->ext.tick_key_name), 0) <= 0)
3764 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3765 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3766 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3767 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3768 ret->options |= SSL_OP_NO_TICKET;
3770 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3771 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3774 #ifndef OPENSSL_NO_SRP
3775 if (!ssl_ctx_srp_ctx_init_intern(ret))
3778 #ifndef OPENSSL_NO_ENGINE
3779 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3780 # define eng_strx(x) #x
3781 # define eng_str(x) eng_strx(x)
3782 /* Use specific client engine automatically... ignore errors */
3785 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3788 ENGINE_load_builtin_engines();
3789 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3791 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3797 * Disable compression by default to prevent CRIME. Applications can
3798 * re-enable compression by configuring
3799 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3800 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3801 * middlebox compatibility by default. This may be disabled by default in
3802 * a later OpenSSL version.
3804 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3806 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3809 * We cannot usefully set a default max_early_data here (which gets
3810 * propagated in SSL_new(), for the following reason: setting the
3811 * SSL field causes tls_construct_stoc_early_data() to tell the
3812 * client that early data will be accepted when constructing a TLS 1.3
3813 * session ticket, and the client will accordingly send us early data
3814 * when using that ticket (if the client has early data to send).
3815 * However, in order for the early data to actually be consumed by
3816 * the application, the application must also have calls to
3817 * SSL_read_early_data(); otherwise we'll just skip past the early data
3818 * and ignore it. So, since the application must add calls to
3819 * SSL_read_early_data(), we also require them to add
3820 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3821 * eliminating the bandwidth-wasting early data in the case described
3824 ret->max_early_data = 0;
3827 * Default recv_max_early_data is a fully loaded single record. Could be
3828 * split across multiple records in practice. We set this differently to
3829 * max_early_data so that, in the default case, we do not advertise any
3830 * support for early_data, but if a client were to send us some (e.g.
3831 * because of an old, stale ticket) then we will tolerate it and skip over
3834 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3836 /* By default we send two session tickets automatically in TLSv1.3 */
3837 ret->num_tickets = 2;
3839 ssl_ctx_system_config(ret);
3843 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3849 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3851 return SSL_CTX_new_ex(NULL, NULL, meth);
3854 int SSL_CTX_up_ref(SSL_CTX *ctx)
3858 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3861 REF_PRINT_COUNT("SSL_CTX", ctx);
3862 REF_ASSERT_ISNT(i < 2);
3863 return ((i > 1) ? 1 : 0);
3866 void SSL_CTX_free(SSL_CTX *a)
3874 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3875 REF_PRINT_COUNT("SSL_CTX", a);
3878 REF_ASSERT_ISNT(i < 0);
3880 X509_VERIFY_PARAM_free(a->param);
3881 dane_ctx_final(&a->dane);
3884 * Free internal session cache. However: the remove_cb() may reference
3885 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3886 * after the sessions were flushed.
3887 * As the ex_data handling routines might also touch the session cache,
3888 * the most secure solution seems to be: empty (flush) the cache, then
3889 * free ex_data, then finally free the cache.
3890 * (See ticket [openssl.org #212].)
3892 if (a->sessions != NULL)
3893 SSL_CTX_flush_sessions(a, 0);
3895 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3896 lh_SSL_SESSION_free(a->sessions);
3897 X509_STORE_free(a->cert_store);
3898 #ifndef OPENSSL_NO_CT
3899 CTLOG_STORE_free(a->ctlog_store);
3901 sk_SSL_CIPHER_free(a->cipher_list);
3902 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3903 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3904 ssl_cert_free(a->cert);
3905 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3906 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3907 OSSL_STACK_OF_X509_free(a->extra_certs);
3908 a->comp_methods = NULL;
3909 #ifndef OPENSSL_NO_SRTP
3910 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3912 #ifndef OPENSSL_NO_SRP
3913 ssl_ctx_srp_ctx_free_intern(a);
3915 #ifndef OPENSSL_NO_ENGINE
3916 tls_engine_finish(a->client_cert_engine);
3919 OPENSSL_free(a->ext.ecpointformats);
3920 OPENSSL_free(a->ext.supportedgroups);
3921 OPENSSL_free(a->ext.supported_groups_default);
3922 OPENSSL_free(a->ext.alpn);
3923 OPENSSL_secure_free(a->ext.secure);
3925 ssl_evp_md_free(a->md5);
3926 ssl_evp_md_free(a->sha1);
3928 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3929 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3930 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3931 ssl_evp_md_free(a->ssl_digest_methods[j]);
3932 for (j = 0; j < a->group_list_len; j++) {
3933 OPENSSL_free(a->group_list[j].tlsname);
3934 OPENSSL_free(a->group_list[j].realname);
3935 OPENSSL_free(a->group_list[j].algorithm);
3937 OPENSSL_free(a->group_list);
3939 OPENSSL_free(a->sigalg_lookup_cache);
3941 CRYPTO_THREAD_lock_free(a->lock);
3942 #ifdef TSAN_REQUIRES_LOCKING
3943 CRYPTO_THREAD_lock_free(a->tsan_lock);
3946 OPENSSL_free(a->propq);
3951 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3953 ctx->default_passwd_callback = cb;
3956 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3958 ctx->default_passwd_callback_userdata = u;
3961 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3963 return ctx->default_passwd_callback;
3966 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3968 return ctx->default_passwd_callback_userdata;
3971 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3973 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3978 sc->default_passwd_callback = cb;
3981 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3983 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3988 sc->default_passwd_callback_userdata = u;
3991 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3993 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3998 return sc->default_passwd_callback;
4001 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4003 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4008 return sc->default_passwd_callback_userdata;
4011 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4012 int (*cb) (X509_STORE_CTX *, void *),
4015 ctx->app_verify_callback = cb;
4016 ctx->app_verify_arg = arg;
4019 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4020 int (*cb) (int, X509_STORE_CTX *))
4022 ctx->verify_mode = mode;
4023 ctx->default_verify_callback = cb;
4026 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4028 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4031 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4033 ssl_cert_set_cert_cb(c->cert, cb, arg);
4036 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4038 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4043 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4046 void ssl_set_masks(SSL_CONNECTION *s)
4049 uint32_t *pvalid = s->s3.tmp.valid_flags;
4050 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4051 unsigned long mask_k, mask_a;
4052 int have_ecc_cert, ecdsa_ok;
4057 dh_tmp = (c->dh_tmp != NULL
4058 || c->dh_tmp_cb != NULL
4061 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4062 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4063 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4064 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4068 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4069 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4071 #ifndef OPENSSL_NO_GOST
4072 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4073 mask_k |= SSL_kGOST | SSL_kGOST18;
4074 mask_a |= SSL_aGOST12;
4076 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4077 mask_k |= SSL_kGOST | SSL_kGOST18;
4078 mask_a |= SSL_aGOST12;
4080 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4081 mask_k |= SSL_kGOST;
4082 mask_a |= SSL_aGOST01;
4093 * If we only have an RSA-PSS certificate allow RSA authentication
4094 * if TLS 1.2 and peer supports it.
4097 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4098 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4099 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4106 mask_a |= SSL_aNULL;
4109 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4110 * depending on the key usage extension.
4112 if (have_ecc_cert) {
4114 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4115 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4116 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4119 mask_a |= SSL_aECDSA;
4121 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4122 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4123 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4124 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4125 mask_a |= SSL_aECDSA;
4127 /* Allow Ed448 for TLS 1.2 if peer supports it */
4128 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4129 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4130 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4131 mask_a |= SSL_aECDSA;
4133 mask_k |= SSL_kECDHE;
4135 #ifndef OPENSSL_NO_PSK
4138 if (mask_k & SSL_kRSA)
4139 mask_k |= SSL_kRSAPSK;
4140 if (mask_k & SSL_kDHE)
4141 mask_k |= SSL_kDHEPSK;
4142 if (mask_k & SSL_kECDHE)
4143 mask_k |= SSL_kECDHEPSK;
4146 s->s3.tmp.mask_k = mask_k;
4147 s->s3.tmp.mask_a = mask_a;
4150 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4152 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4153 /* key usage, if present, must allow signing */
4154 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4155 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4159 return 1; /* all checks are ok */
4162 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4163 const unsigned char **serverinfo,
4164 size_t *serverinfo_length)
4166 CERT_PKEY *cpk = s->s3.tmp.cert;
4167 *serverinfo_length = 0;
4169 if (cpk == NULL || cpk->serverinfo == NULL)
4172 *serverinfo = cpk->serverinfo;
4173 *serverinfo_length = cpk->serverinfo_length;
4177 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4182 * If the session_id_length is 0, we are not supposed to cache it, and it
4183 * would be rather hard to do anyway :-)
4185 if (s->session->session_id_length == 0)
4189 * If sid_ctx_length is 0 there is no specific application context
4190 * associated with this session, so when we try to resume it and
4191 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4192 * indication that this is actually a session for the proper application
4193 * context, and the *handshake* will fail, not just the resumption attempt.
4194 * Do not cache (on the server) these sessions that are not resumable
4195 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4197 if (s->server && s->session->sid_ctx_length == 0
4198 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4201 i = s->session_ctx->session_cache_mode;
4203 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4205 * Add the session to the internal cache. In server side TLSv1.3 we
4206 * normally don't do this because by default it's a full stateless ticket
4207 * with only a dummy session id so there is no reason to cache it,
4209 * - we are doing early_data, in which case we cache so that we can
4211 * - the application has set a remove_session_cb so needs to know about
4212 * session timeout events
4213 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4215 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4216 && (!SSL_CONNECTION_IS_TLS13(s)
4218 || (s->max_early_data > 0
4219 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4220 || s->session_ctx->remove_session_cb != NULL
4221 || (s->options & SSL_OP_NO_TICKET) != 0))
4222 SSL_CTX_add_session(s->session_ctx, s->session);
4225 * Add the session to the external cache. We do this even in server side
4226 * TLSv1.3 without early data because some applications just want to
4227 * know about the creation of a session and aren't doing a full cache.
4229 if (s->session_ctx->new_session_cb != NULL) {
4230 SSL_SESSION_up_ref(s->session);
4231 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4233 SSL_SESSION_free(s->session);
4237 /* auto flush every 255 connections */
4238 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4239 TSAN_QUALIFIER int *stat;
4241 if (mode & SSL_SESS_CACHE_CLIENT)
4242 stat = &s->session_ctx->stats.sess_connect_good;
4244 stat = &s->session_ctx->stats.sess_accept_good;
4245 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4246 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4250 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4255 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4260 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4263 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4265 /* TODO(QUIC): Do we want this for QUIC? */
4267 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4270 if (s->method != meth) {
4271 const SSL_METHOD *sm = s->method;
4272 int (*hf) (SSL *) = sc->handshake_func;
4274 if (sm->version == meth->version)
4279 ret = s->method->ssl_init(s);
4282 if (hf == sm->ssl_connect)
4283 sc->handshake_func = meth->ssl_connect;
4284 else if (hf == sm->ssl_accept)
4285 sc->handshake_func = meth->ssl_accept;
4290 int SSL_get_error(const SSL *s, int i)
4295 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4298 return SSL_ERROR_NONE;
4300 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4302 return SSL_ERROR_SSL;
4305 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4306 * where we do encode the error
4308 if ((l = ERR_peek_error()) != 0) {
4309 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4310 return SSL_ERROR_SYSCALL;
4312 return SSL_ERROR_SSL;
4315 if (SSL_want_read(s)) {
4316 bio = SSL_get_rbio(s);
4317 if (BIO_should_read(bio))
4318 return SSL_ERROR_WANT_READ;
4319 else if (BIO_should_write(bio))
4321 * This one doesn't make too much sense ... We never try to write
4322 * to the rbio, and an application program where rbio and wbio
4323 * are separate couldn't even know what it should wait for.
4324 * However if we ever set s->rwstate incorrectly (so that we have
4325 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4326 * wbio *are* the same, this test works around that bug; so it
4327 * might be safer to keep it.
4329 return SSL_ERROR_WANT_WRITE;
4330 else if (BIO_should_io_special(bio)) {
4331 reason = BIO_get_retry_reason(bio);
4332 if (reason == BIO_RR_CONNECT)
4333 return SSL_ERROR_WANT_CONNECT;
4334 else if (reason == BIO_RR_ACCEPT)
4335 return SSL_ERROR_WANT_ACCEPT;
4337 return SSL_ERROR_SYSCALL; /* unknown */
4341 if (SSL_want_write(s)) {
4342 /* Access wbio directly - in order to use the buffered bio if present */
4344 if (BIO_should_write(bio))
4345 return SSL_ERROR_WANT_WRITE;
4346 else if (BIO_should_read(bio))
4348 * See above (SSL_want_read(s) with BIO_should_write(bio))
4350 return SSL_ERROR_WANT_READ;
4351 else if (BIO_should_io_special(bio)) {
4352 reason = BIO_get_retry_reason(bio);
4353 if (reason == BIO_RR_CONNECT)
4354 return SSL_ERROR_WANT_CONNECT;
4355 else if (reason == BIO_RR_ACCEPT)
4356 return SSL_ERROR_WANT_ACCEPT;
4358 return SSL_ERROR_SYSCALL;
4361 if (SSL_want_x509_lookup(s))
4362 return SSL_ERROR_WANT_X509_LOOKUP;
4363 if (SSL_want_retry_verify(s))
4364 return SSL_ERROR_WANT_RETRY_VERIFY;
4365 if (SSL_want_async(s))
4366 return SSL_ERROR_WANT_ASYNC;
4367 if (SSL_want_async_job(s))
4368 return SSL_ERROR_WANT_ASYNC_JOB;
4369 if (SSL_want_client_hello_cb(s))
4370 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4372 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4373 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4374 return SSL_ERROR_ZERO_RETURN;
4376 return SSL_ERROR_SYSCALL;
4379 static int ssl_do_handshake_intern(void *vargs)
4381 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4383 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4388 return sc->handshake_func(s);
4391 int SSL_do_handshake(SSL *s)
4394 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4396 /* TODO(QUIC): Special handling for QUIC will be needed */
4400 if (sc->handshake_func == NULL) {
4401 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4405 ossl_statem_check_finish_init(sc, -1);
4407 s->method->ssl_renegotiate_check(s, 0);
4409 if (SSL_in_init(s) || SSL_in_before(s)) {
4410 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4411 struct ssl_async_args args;
4413 memset(&args, 0, sizeof(args));
4416 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4418 ret = sc->handshake_func(s);
4424 void SSL_set_accept_state(SSL *s)
4426 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4428 /* TODO(QUIC): Special handling for QUIC will be needed */
4434 ossl_statem_clear(sc);
4435 sc->handshake_func = s->method->ssl_accept;
4439 void SSL_set_connect_state(SSL *s)
4441 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4443 /* TODO(QUIC): Special handling for QUIC will be needed */
4449 ossl_statem_clear(sc);
4450 sc->handshake_func = s->method->ssl_connect;
4454 int ssl_undefined_function(SSL *s)
4456 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4460 int ssl_undefined_void_function(void)
4462 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4466 int ssl_undefined_const_function(const SSL *s)
4471 const SSL_METHOD *ssl_bad_method(int ver)
4473 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4477 const char *ssl_protocol_to_string(int version)
4481 case TLS1_3_VERSION:
4484 case TLS1_2_VERSION:
4487 case TLS1_1_VERSION:
4502 case DTLS1_2_VERSION:
4510 const char *SSL_get_version(const SSL *s)
4512 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4514 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4518 return ssl_protocol_to_string(sc->version);
4521 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4523 STACK_OF(X509_NAME) *sk;
4532 if ((sk = sk_X509_NAME_new_null()) == NULL)
4534 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4535 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4537 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4540 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4542 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4551 SSL *SSL_dup(SSL *s)
4555 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4556 SSL_CONNECTION *retsc;
4557 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4562 /* If we're not quiescent, just up_ref! */
4563 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4564 CRYPTO_UP_REF(&s->references, &i, s->lock);
4569 * Otherwise, copy configuration state, and session if set.
4571 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4573 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4576 if (sc->session != NULL) {
4578 * Arranges to share the same session via up_ref. This "copies"
4579 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4581 if (!SSL_copy_session_id(ret, s))
4585 * No session has been established yet, so we have to expect that
4586 * s->cert or ret->cert will be changed later -- they should not both
4587 * point to the same object, and thus we can't use
4588 * SSL_copy_session_id.
4590 if (!SSL_set_ssl_method(ret, s->method))
4593 if (sc->cert != NULL) {
4594 ssl_cert_free(retsc->cert);
4595 retsc->cert = ssl_cert_dup(sc->cert);
4596 if (retsc->cert == NULL)
4600 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4601 (int)sc->sid_ctx_length))
4605 if (!ssl_dane_dup(retsc, sc))
4607 retsc->version = sc->version;
4608 retsc->options = sc->options;
4609 retsc->min_proto_version = sc->min_proto_version;
4610 retsc->max_proto_version = sc->max_proto_version;
4611 retsc->mode = sc->mode;
4612 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4613 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4614 retsc->msg_callback = sc->msg_callback;
4615 retsc->msg_callback_arg = sc->msg_callback_arg;
4616 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4617 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4618 retsc->generate_session_id = sc->generate_session_id;
4620 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4622 /* copy app data, a little dangerous perhaps */
4623 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4626 retsc->server = sc->server;
4627 if (sc->handshake_func) {
4629 SSL_set_accept_state(ret);
4631 SSL_set_connect_state(ret);
4633 retsc->shutdown = sc->shutdown;
4634 retsc->hit = sc->hit;
4636 retsc->default_passwd_callback = sc->default_passwd_callback;
4637 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4639 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4641 /* dup the cipher_list and cipher_list_by_id stacks */
4642 if (sc->cipher_list != NULL) {
4643 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4646 if (sc->cipher_list_by_id != NULL)
4647 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4651 /* Dup the client_CA list */
4652 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4653 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4663 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4665 if (s->enc_read_ctx != NULL) {
4666 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4667 s->enc_read_ctx = NULL;
4669 if (s->enc_write_ctx != NULL) {
4670 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4671 s->enc_write_ctx = NULL;
4673 #ifndef OPENSSL_NO_COMP
4674 COMP_CTX_free(s->expand);
4676 COMP_CTX_free(s->compress);
4681 X509 *SSL_get_certificate(const SSL *s)
4683 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4688 if (sc->cert != NULL)
4689 return sc->cert->key->x509;
4694 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4696 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4701 if (sc->cert != NULL)
4702 return sc->cert->key->privatekey;
4707 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4709 if (ctx->cert != NULL)
4710 return ctx->cert->key->x509;
4715 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4717 if (ctx->cert != NULL)
4718 return ctx->cert->key->privatekey;
4723 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4725 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4730 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4731 return sc->session->cipher;
4735 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4737 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4742 return sc->s3.tmp.new_cipher;
4745 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4747 #ifndef OPENSSL_NO_COMP
4748 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4753 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4759 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4761 #ifndef OPENSSL_NO_COMP
4762 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4767 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4773 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4777 if (s->bbio != NULL) {
4778 /* Already buffered. */
4782 bbio = BIO_new(BIO_f_buffer());
4783 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4785 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4789 s->wbio = BIO_push(bbio, s->wbio);
4794 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4796 /* callers ensure s is never null */
4797 if (s->bbio == NULL)
4800 s->wbio = BIO_pop(s->wbio);
4807 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4809 ctx->quiet_shutdown = mode;
4812 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4814 return ctx->quiet_shutdown;
4817 void SSL_set_quiet_shutdown(SSL *s, int mode)
4819 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4821 /* TODO(QUIC): Do we want this for QUIC? */
4825 sc->quiet_shutdown = mode;
4828 int SSL_get_quiet_shutdown(const SSL *s)
4830 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4832 /* TODO(QUIC): Do we want this for QUIC? */
4836 return sc->quiet_shutdown;
4839 void SSL_set_shutdown(SSL *s, int mode)
4841 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4843 /* TODO(QUIC): Do we want this for QUIC? */
4847 sc->shutdown = mode;
4850 int SSL_get_shutdown(const SSL *s)
4852 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4854 /* TODO(QUIC): Do we want this for QUIC? */
4858 return sc->shutdown;
4861 int SSL_version(const SSL *s)
4863 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4865 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4872 int SSL_client_version(const SSL *s)
4874 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4876 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4880 return sc->client_version;
4883 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4888 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4891 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4893 /* TODO(QUIC): Do we need this for QUIC support? */
4897 if (ssl->ctx == ctx)
4900 ctx = sc->session_ctx;
4901 new_cert = ssl_cert_dup(ctx->cert);
4902 if (new_cert == NULL) {
4906 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4907 ssl_cert_free(new_cert);
4911 ssl_cert_free(sc->cert);
4912 sc->cert = new_cert;
4915 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4916 * so setter APIs must prevent invalid lengths from entering the system.
4918 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4922 * If the session ID context matches that of the parent SSL_CTX,
4923 * inherit it from the new SSL_CTX as well. If however the context does
4924 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4925 * leave it unchanged.
4927 if ((ssl->ctx != NULL) &&
4928 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4929 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4930 sc->sid_ctx_length = ctx->sid_ctx_length;
4931 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4934 SSL_CTX_up_ref(ctx);
4935 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4941 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4943 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4947 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4949 X509_LOOKUP *lookup;
4951 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4955 /* We ignore errors, in case the directory doesn't exist */
4958 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4965 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4967 X509_LOOKUP *lookup;
4969 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4973 /* We ignore errors, in case the file doesn't exist */
4976 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4984 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4986 X509_LOOKUP *lookup;
4988 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4992 /* We ignore errors, in case the directory doesn't exist */
4995 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5002 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5004 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5008 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5010 return X509_STORE_load_path(ctx->cert_store, CApath);
5013 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5015 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5019 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5022 if (CAfile == NULL && CApath == NULL)
5024 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5026 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5031 void SSL_set_info_callback(SSL *ssl,
5032 void (*cb) (const SSL *ssl, int type, int val))
5034 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5039 sc->info_callback = cb;
5043 * One compiler (Diab DCC) doesn't like argument names in returned function
5046 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5049 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5054 return sc->info_callback;
5057 void SSL_set_verify_result(SSL *ssl, long arg)
5059 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5064 sc->verify_result = arg;
5067 long SSL_get_verify_result(const SSL *ssl)
5069 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5074 return sc->verify_result;
5077 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5079 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5085 return sizeof(sc->s3.client_random);
5086 if (outlen > sizeof(sc->s3.client_random))
5087 outlen = sizeof(sc->s3.client_random);
5088 memcpy(out, sc->s3.client_random, outlen);
5092 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5094 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5100 return sizeof(sc->s3.server_random);
5101 if (outlen > sizeof(sc->s3.server_random))
5102 outlen = sizeof(sc->s3.server_random);
5103 memcpy(out, sc->s3.server_random, outlen);
5107 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5108 unsigned char *out, size_t outlen)
5111 return session->master_key_length;
5112 if (outlen > session->master_key_length)
5113 outlen = session->master_key_length;
5114 memcpy(out, session->master_key, outlen);
5118 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5121 if (len > sizeof(sess->master_key))
5124 memcpy(sess->master_key, in, len);
5125 sess->master_key_length = len;
5130 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5132 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5135 void *SSL_get_ex_data(const SSL *s, int idx)
5137 return CRYPTO_get_ex_data(&s->ex_data, idx);
5140 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5142 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5145 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5147 return CRYPTO_get_ex_data(&s->ex_data, idx);
5150 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5152 return ctx->cert_store;
5155 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5157 X509_STORE_free(ctx->cert_store);
5158 ctx->cert_store = store;
5161 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5164 X509_STORE_up_ref(store);
5165 SSL_CTX_set_cert_store(ctx, store);
5168 int SSL_want(const SSL *s)
5170 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5178 #ifndef OPENSSL_NO_PSK
5179 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5181 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5182 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5185 OPENSSL_free(ctx->cert->psk_identity_hint);
5186 if (identity_hint != NULL) {
5187 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5188 if (ctx->cert->psk_identity_hint == NULL)
5191 ctx->cert->psk_identity_hint = NULL;
5195 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5197 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5202 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5203 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5206 OPENSSL_free(sc->cert->psk_identity_hint);
5207 if (identity_hint != NULL) {
5208 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5209 if (sc->cert->psk_identity_hint == NULL)
5212 sc->cert->psk_identity_hint = NULL;
5216 const char *SSL_get_psk_identity_hint(const SSL *s)
5218 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5220 if (sc == NULL || sc->session == NULL)
5223 return sc->session->psk_identity_hint;
5226 const char *SSL_get_psk_identity(const SSL *s)
5228 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5230 if (sc == NULL || sc->session == NULL)
5233 return sc->session->psk_identity;
5236 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5238 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5243 sc->psk_client_callback = cb;
5246 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5248 ctx->psk_client_callback = cb;
5251 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5253 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5258 sc->psk_server_callback = cb;
5261 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5263 ctx->psk_server_callback = cb;
5267 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5269 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5274 sc->psk_find_session_cb = cb;
5277 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5278 SSL_psk_find_session_cb_func cb)
5280 ctx->psk_find_session_cb = cb;
5283 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5285 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5290 sc->psk_use_session_cb = cb;
5293 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5294 SSL_psk_use_session_cb_func cb)
5296 ctx->psk_use_session_cb = cb;
5299 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5300 void (*cb) (int write_p, int version,
5301 int content_type, const void *buf,
5302 size_t len, SSL *ssl, void *arg))
5304 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5307 void SSL_set_msg_callback(SSL *ssl,
5308 void (*cb) (int write_p, int version,
5309 int content_type, const void *buf,
5310 size_t len, SSL *ssl, void *arg))
5312 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5315 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5316 int (*cb) (SSL *ssl,
5320 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5321 (void (*)(void))cb);
5324 void SSL_set_not_resumable_session_callback(SSL *ssl,
5325 int (*cb) (SSL *ssl,
5326 int is_forward_secure))
5328 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5329 (void (*)(void))cb);
5332 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5333 size_t (*cb) (SSL *ssl, int type,
5334 size_t len, void *arg))
5336 ctx->record_padding_cb = cb;
5339 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5341 ctx->record_padding_arg = arg;
5344 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5346 return ctx->record_padding_arg;
5349 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5351 /* block size of 0 or 1 is basically no padding */
5352 if (block_size == 1)
5353 ctx->block_padding = 0;
5354 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5355 ctx->block_padding = block_size;
5361 int SSL_set_record_padding_callback(SSL *ssl,
5362 size_t (*cb) (SSL *ssl, int type,
5363 size_t len, void *arg))
5366 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5371 b = SSL_get_wbio(ssl);
5372 if (b == NULL || !BIO_get_ktls_send(b)) {
5373 sc->record_padding_cb = cb;
5379 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5381 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5386 sc->record_padding_arg = arg;
5389 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5391 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5396 return sc->record_padding_arg;
5399 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5401 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5406 /* block size of 0 or 1 is basically no padding */
5407 if (block_size == 1)
5408 sc->block_padding = 0;
5409 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5410 sc->block_padding = block_size;
5416 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5418 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5423 sc->num_tickets = num_tickets;
5428 size_t SSL_get_num_tickets(const SSL *s)
5430 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5435 return sc->num_tickets;
5438 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5440 ctx->num_tickets = num_tickets;
5445 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5447 return ctx->num_tickets;
5451 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5452 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5453 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5454 * Returns the newly allocated ctx;
5457 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5459 ssl_clear_hash_ctx(hash);
5460 *hash = EVP_MD_CTX_new();
5461 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5462 EVP_MD_CTX_free(*hash);
5469 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5472 EVP_MD_CTX_free(*hash);
5476 /* Retrieve handshake hashes */
5477 int ssl_handshake_hash(SSL_CONNECTION *s,
5478 unsigned char *out, size_t outlen,
5481 EVP_MD_CTX *ctx = NULL;
5482 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5483 int hashleni = EVP_MD_CTX_get_size(hdgst);
5486 if (hashleni < 0 || (size_t)hashleni > outlen) {
5487 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5491 ctx = EVP_MD_CTX_new();
5493 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5497 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5498 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5499 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5503 *hashlen = hashleni;
5507 EVP_MD_CTX_free(ctx);
5511 int SSL_session_reused(const SSL *s)
5513 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5521 int SSL_is_server(const SSL *s)
5523 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5531 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5532 void SSL_set_debug(SSL *s, int debug)
5534 /* Old function was do-nothing anyway... */
5540 void SSL_set_security_level(SSL *s, int level)
5542 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5547 sc->cert->sec_level = level;
5550 int SSL_get_security_level(const SSL *s)
5552 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5557 return sc->cert->sec_level;
5560 void SSL_set_security_callback(SSL *s,
5561 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5562 int op, int bits, int nid,
5563 void *other, void *ex))
5565 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5570 sc->cert->sec_cb = cb;
5573 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5574 const SSL_CTX *ctx, int op,
5575 int bits, int nid, void *other,
5577 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5582 return sc->cert->sec_cb;
5585 void SSL_set0_security_ex_data(SSL *s, void *ex)
5587 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5592 sc->cert->sec_ex = ex;
5595 void *SSL_get0_security_ex_data(const SSL *s)
5597 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5602 return sc->cert->sec_ex;
5605 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5607 ctx->cert->sec_level = level;
5610 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5612 return ctx->cert->sec_level;
5615 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5616 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5617 int op, int bits, int nid,
5618 void *other, void *ex))
5620 ctx->cert->sec_cb = cb;
5623 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5629 return ctx->cert->sec_cb;
5632 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5634 ctx->cert->sec_ex = ex;
5637 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5639 return ctx->cert->sec_ex;
5642 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5644 return ctx->options;
5647 uint64_t SSL_get_options(const SSL *s)
5649 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5657 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5659 return ctx->options |= op;
5662 uint64_t SSL_set_options(SSL *s, uint64_t op)
5664 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5669 return sc->options |= op;
5672 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5674 return ctx->options &= ~op;
5677 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5679 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5684 return sc->options &= ~op;
5687 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5689 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5694 return sc->verified_chain;
5697 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5699 #ifndef OPENSSL_NO_CT
5702 * Moves SCTs from the |src| stack to the |dst| stack.
5703 * The source of each SCT will be set to |origin|.
5704 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5706 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5708 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5709 sct_source_t origin)
5715 *dst = sk_SCT_new_null();
5717 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5722 while ((sct = sk_SCT_pop(src)) != NULL) {
5723 if (SCT_set_source(sct, origin) != 1)
5726 if (sk_SCT_push(*dst, sct) <= 0)
5734 sk_SCT_push(src, sct); /* Put the SCT back */
5739 * Look for data collected during ServerHello and parse if found.
5740 * Returns the number of SCTs extracted.
5742 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5744 int scts_extracted = 0;
5746 if (s->ext.scts != NULL) {
5747 const unsigned char *p = s->ext.scts;
5748 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5750 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5752 SCT_LIST_free(scts);
5755 return scts_extracted;
5759 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5760 * contains an SCT X509 extension. They will be stored in |s->scts|.
5762 * - The number of SCTs extracted, assuming an OCSP response exists.
5763 * - 0 if no OCSP response exists or it contains no SCTs.
5764 * - A negative integer if an error occurs.
5766 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5768 # ifndef OPENSSL_NO_OCSP
5769 int scts_extracted = 0;
5770 const unsigned char *p;
5771 OCSP_BASICRESP *br = NULL;
5772 OCSP_RESPONSE *rsp = NULL;
5773 STACK_OF(SCT) *scts = NULL;
5776 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5779 p = s->ext.ocsp.resp;
5780 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5784 br = OCSP_response_get1_basic(rsp);
5788 for (i = 0; i < OCSP_resp_count(br); ++i) {
5789 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5795 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5797 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5798 if (scts_extracted < 0)
5802 SCT_LIST_free(scts);
5803 OCSP_BASICRESP_free(br);
5804 OCSP_RESPONSE_free(rsp);
5805 return scts_extracted;
5807 /* Behave as if no OCSP response exists */
5813 * Attempts to extract SCTs from the peer certificate.
5814 * Return the number of SCTs extracted, or a negative integer if an error
5817 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5819 int scts_extracted = 0;
5820 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5823 STACK_OF(SCT) *scts =
5824 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5827 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5829 SCT_LIST_free(scts);
5832 return scts_extracted;
5836 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5837 * response (if it exists) and X509v3 extensions in the certificate.
5838 * Returns NULL if an error occurs.
5840 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5842 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5847 if (!sc->scts_parsed) {
5848 if (ct_extract_tls_extension_scts(sc) < 0 ||
5849 ct_extract_ocsp_response_scts(sc) < 0 ||
5850 ct_extract_x509v3_extension_scts(sc) < 0)
5853 sc->scts_parsed = 1;
5860 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5861 const STACK_OF(SCT) *scts, void *unused_arg)
5866 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5867 const STACK_OF(SCT) *scts, void *unused_arg)
5869 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5872 for (i = 0; i < count; ++i) {
5873 SCT *sct = sk_SCT_value(scts, i);
5874 int status = SCT_get_validation_status(sct);
5876 if (status == SCT_VALIDATION_STATUS_VALID)
5879 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5883 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5886 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5892 * Since code exists that uses the custom extension handler for CT, look
5893 * for this and throw an error if they have already registered to use CT.
5895 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5896 TLSEXT_TYPE_signed_certificate_timestamp))
5898 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5902 if (callback != NULL) {
5904 * If we are validating CT, then we MUST accept SCTs served via OCSP
5906 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5910 sc->ct_validation_callback = callback;
5911 sc->ct_validation_callback_arg = arg;
5916 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5917 ssl_ct_validation_cb callback, void *arg)
5920 * Since code exists that uses the custom extension handler for CT, look for
5921 * this and throw an error if they have already registered to use CT.
5923 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5924 TLSEXT_TYPE_signed_certificate_timestamp))
5926 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5930 ctx->ct_validation_callback = callback;
5931 ctx->ct_validation_callback_arg = arg;
5935 int SSL_ct_is_enabled(const SSL *s)
5937 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5942 return sc->ct_validation_callback != NULL;
5945 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5947 return ctx->ct_validation_callback != NULL;
5950 int ssl_validate_ct(SSL_CONNECTION *s)
5953 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5955 SSL_DANE *dane = &s->dane;
5956 CT_POLICY_EVAL_CTX *ctx = NULL;
5957 const STACK_OF(SCT) *scts;
5960 * If no callback is set, the peer is anonymous, or its chain is invalid,
5961 * skip SCT validation - just return success. Applications that continue
5962 * handshakes without certificates, with unverified chains, or pinned leaf
5963 * certificates are outside the scope of the WebPKI and CT.
5965 * The above exclusions notwithstanding the vast majority of peers will
5966 * have rather ordinary certificate chains validated by typical
5967 * applications that perform certificate verification and therefore will
5968 * process SCTs when enabled.
5970 if (s->ct_validation_callback == NULL || cert == NULL ||
5971 s->verify_result != X509_V_OK ||
5972 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5976 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5977 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5979 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5980 switch (dane->mtlsa->usage) {
5981 case DANETLS_USAGE_DANE_TA:
5982 case DANETLS_USAGE_DANE_EE:
5987 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5988 SSL_CONNECTION_GET_CTX(s)->propq);
5990 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5994 issuer = sk_X509_value(s->verified_chain, 1);
5995 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5996 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5997 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
5998 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
5999 CT_POLICY_EVAL_CTX_set_time(
6000 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6002 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6005 * This function returns success (> 0) only when all the SCTs are valid, 0
6006 * when some are invalid, and < 0 on various internal errors (out of
6007 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6008 * reason to abort the handshake, that decision is up to the callback.
6009 * Therefore, we error out only in the unexpected case that the return
6010 * value is negative.
6012 * XXX: One might well argue that the return value of this function is an
6013 * unfortunate design choice. Its job is only to determine the validation
6014 * status of each of the provided SCTs. So long as it correctly separates
6015 * the wheat from the chaff it should return success. Failure in this case
6016 * ought to correspond to an inability to carry out its duties.
6018 if (SCT_LIST_validate(scts, ctx) < 0) {
6019 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6023 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6025 ret = 0; /* This function returns 0 on failure */
6027 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6030 CT_POLICY_EVAL_CTX_free(ctx);
6032 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6033 * failure return code here. Also the application may wish the complete
6034 * the handshake, and then disconnect cleanly at a higher layer, after
6035 * checking the verification status of the completed connection.
6037 * We therefore force a certificate verification failure which will be
6038 * visible via SSL_get_verify_result() and cached as part of any resumed
6041 * Note: the permissive callback is for information gathering only, always
6042 * returns success, and does not affect verification status. Only the
6043 * strict callback or a custom application-specified callback can trigger
6044 * connection failure or record a verification error.
6047 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6051 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6053 switch (validation_mode) {
6055 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6057 case SSL_CT_VALIDATION_PERMISSIVE:
6058 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6059 case SSL_CT_VALIDATION_STRICT:
6060 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6064 int SSL_enable_ct(SSL *s, int validation_mode)
6066 switch (validation_mode) {
6068 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6070 case SSL_CT_VALIDATION_PERMISSIVE:
6071 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6072 case SSL_CT_VALIDATION_STRICT:
6073 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6077 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6079 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6082 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6084 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6087 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6089 CTLOG_STORE_free(ctx->ctlog_store);
6090 ctx->ctlog_store = logs;
6093 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6095 return ctx->ctlog_store;
6098 #endif /* OPENSSL_NO_CT */
6100 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6103 c->client_hello_cb = cb;
6104 c->client_hello_cb_arg = arg;
6107 int SSL_client_hello_isv2(SSL *s)
6109 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6114 if (sc->clienthello == NULL)
6116 return sc->clienthello->isv2;
6119 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6121 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6126 if (sc->clienthello == NULL)
6128 return sc->clienthello->legacy_version;
6131 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6133 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6138 if (sc->clienthello == NULL)
6141 *out = sc->clienthello->random;
6142 return SSL3_RANDOM_SIZE;
6145 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6147 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6152 if (sc->clienthello == NULL)
6155 *out = sc->clienthello->session_id;
6156 return sc->clienthello->session_id_len;
6159 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6161 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6166 if (sc->clienthello == NULL)
6169 *out = PACKET_data(&sc->clienthello->ciphersuites);
6170 return PACKET_remaining(&sc->clienthello->ciphersuites);
6173 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6175 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6180 if (sc->clienthello == NULL)
6183 *out = sc->clienthello->compressions;
6184 return sc->clienthello->compressions_len;
6187 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6192 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6197 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6199 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6200 ext = sc->clienthello->pre_proc_exts + i;
6209 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6210 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6213 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6214 ext = sc->clienthello->pre_proc_exts + i;
6216 if (ext->received_order >= num)
6218 present[ext->received_order] = ext->type;
6225 OPENSSL_free(present);
6229 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6233 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6238 if (sc->clienthello == NULL || num_exts == NULL)
6240 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6241 ext = sc->clienthello->pre_proc_exts + i;
6253 if (*num_exts < num)
6255 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6256 ext = sc->clienthello->pre_proc_exts + i;
6258 if (ext->received_order >= num)
6260 exts[ext->received_order] = ext->type;
6267 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6272 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6277 if (sc->clienthello == NULL)
6279 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6280 r = sc->clienthello->pre_proc_exts + i;
6281 if (r->present && r->type == type) {
6283 *out = PACKET_data(&r->data);
6285 *outlen = PACKET_remaining(&r->data);
6292 int SSL_free_buffers(SSL *ssl)
6295 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6302 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6305 RECORD_LAYER_release(rl);
6309 int SSL_alloc_buffers(SSL *ssl)
6311 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6316 return ssl3_setup_buffers(sc);
6319 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6321 ctx->keylog_callback = cb;
6324 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6326 return ctx->keylog_callback;
6329 static int nss_keylog_int(const char *prefix,
6331 const uint8_t *parameter_1,
6332 size_t parameter_1_len,
6333 const uint8_t *parameter_2,
6334 size_t parameter_2_len)
6337 char *cursor = NULL;
6341 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6343 if (sctx->keylog_callback == NULL)
6347 * Our output buffer will contain the following strings, rendered with
6348 * space characters in between, terminated by a NULL character: first the
6349 * prefix, then the first parameter, then the second parameter. The
6350 * meaning of each parameter depends on the specific key material being
6351 * logged. Note that the first and second parameters are encoded in
6352 * hexadecimal, so we need a buffer that is twice their lengths.
6354 prefix_len = strlen(prefix);
6355 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6356 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6357 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6361 strcpy(cursor, prefix);
6362 cursor += prefix_len;
6365 for (i = 0; i < parameter_1_len; i++) {
6366 sprintf(cursor, "%02x", parameter_1[i]);
6371 for (i = 0; i < parameter_2_len; i++) {
6372 sprintf(cursor, "%02x", parameter_2[i]);
6377 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6378 OPENSSL_clear_free(out, out_len);
6383 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6384 const uint8_t *encrypted_premaster,
6385 size_t encrypted_premaster_len,
6386 const uint8_t *premaster,
6387 size_t premaster_len)
6389 if (encrypted_premaster_len < 8) {
6390 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6394 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6395 return nss_keylog_int("RSA",
6397 encrypted_premaster,
6403 int ssl_log_secret(SSL_CONNECTION *sc,
6405 const uint8_t *secret,
6408 return nss_keylog_int(label,
6410 sc->s3.client_random,
6416 #define SSLV2_CIPHER_LEN 3
6418 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6422 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6424 if (PACKET_remaining(cipher_suites) == 0) {
6425 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6429 if (PACKET_remaining(cipher_suites) % n != 0) {
6430 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6434 OPENSSL_free(s->s3.tmp.ciphers_raw);
6435 s->s3.tmp.ciphers_raw = NULL;
6436 s->s3.tmp.ciphers_rawlen = 0;
6439 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6440 PACKET sslv2ciphers = *cipher_suites;
6441 unsigned int leadbyte;
6445 * We store the raw ciphers list in SSLv3+ format so we need to do some
6446 * preprocessing to convert the list first. If there are any SSLv2 only
6447 * ciphersuites with a non-zero leading byte then we are going to
6448 * slightly over allocate because we won't store those. But that isn't a
6451 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6452 s->s3.tmp.ciphers_raw = raw;
6454 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6457 for (s->s3.tmp.ciphers_rawlen = 0;
6458 PACKET_remaining(&sslv2ciphers) > 0;
6459 raw += TLS_CIPHER_LEN) {
6460 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6462 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6465 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6466 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6467 OPENSSL_free(s->s3.tmp.ciphers_raw);
6468 s->s3.tmp.ciphers_raw = NULL;
6469 s->s3.tmp.ciphers_rawlen = 0;
6473 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6475 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6476 &s->s3.tmp.ciphers_rawlen)) {
6477 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6483 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6484 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6485 STACK_OF(SSL_CIPHER) **scsvs)
6488 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6493 if (!PACKET_buf_init(&pkt, bytes, len))
6495 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6498 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6499 STACK_OF(SSL_CIPHER) **skp,
6500 STACK_OF(SSL_CIPHER) **scsvs_out,
6501 int sslv2format, int fatal)
6503 const SSL_CIPHER *c;
6504 STACK_OF(SSL_CIPHER) *sk = NULL;
6505 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6507 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6508 unsigned char cipher[SSLV2_CIPHER_LEN];
6510 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6512 if (PACKET_remaining(cipher_suites) == 0) {
6514 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6516 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6520 if (PACKET_remaining(cipher_suites) % n != 0) {
6522 SSLfatal(s, SSL_AD_DECODE_ERROR,
6523 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6525 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6529 sk = sk_SSL_CIPHER_new_null();
6530 scsvs = sk_SSL_CIPHER_new_null();
6531 if (sk == NULL || scsvs == NULL) {
6533 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6535 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6539 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6541 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6542 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6543 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6545 if (sslv2format && cipher[0] != '\0')
6548 /* For SSLv2-compat, ignore leading 0-byte. */
6549 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6551 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6552 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6554 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6556 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6561 if (PACKET_remaining(cipher_suites) > 0) {
6563 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6565 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6572 sk_SSL_CIPHER_free(sk);
6573 if (scsvs_out != NULL)
6576 sk_SSL_CIPHER_free(scsvs);
6579 sk_SSL_CIPHER_free(sk);
6580 sk_SSL_CIPHER_free(scsvs);
6584 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6586 ctx->max_early_data = max_early_data;
6591 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6593 return ctx->max_early_data;
6596 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6598 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6603 sc->max_early_data = max_early_data;
6608 uint32_t SSL_get_max_early_data(const SSL *s)
6610 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6615 return sc->max_early_data;
6618 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6620 ctx->recv_max_early_data = recv_max_early_data;
6625 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6627 return ctx->recv_max_early_data;
6630 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6632 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6637 sc->recv_max_early_data = recv_max_early_data;
6642 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6644 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6649 return sc->recv_max_early_data;
6652 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6654 /* Return any active Max Fragment Len extension */
6655 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6656 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6658 /* return current SSL connection setting */
6659 return sc->max_send_fragment;
6662 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6664 /* Return a value regarding an active Max Fragment Len extension */
6665 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6666 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6667 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6669 /* else limit |split_send_fragment| to current |max_send_fragment| */
6670 if (sc->split_send_fragment > sc->max_send_fragment)
6671 return sc->max_send_fragment;
6673 /* return current SSL connection setting */
6674 return sc->split_send_fragment;
6677 int SSL_stateless(SSL *s)
6680 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6682 /* TODO(QUIC): This will need further work. */
6686 /* Ensure there is no state left over from a previous invocation */
6692 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6693 ret = SSL_accept(s);
6694 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6696 if (ret > 0 && sc->ext.cookieok)
6699 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6705 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6707 ctx->pha_enabled = val;
6710 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6712 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6717 sc->pha_enabled = val;
6720 int SSL_verify_client_post_handshake(SSL *ssl)
6722 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6727 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6728 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6732 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6736 if (!SSL_is_init_finished(ssl)) {
6737 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6741 switch (sc->post_handshake_auth) {
6743 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6746 case SSL_PHA_EXT_SENT:
6747 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6749 case SSL_PHA_EXT_RECEIVED:
6751 case SSL_PHA_REQUEST_PENDING:
6752 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6754 case SSL_PHA_REQUESTED:
6755 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6759 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6761 /* checks verify_mode and algorithm_auth */
6762 if (!send_certificate_request(sc)) {
6763 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6764 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6768 ossl_statem_set_in_init(sc, 1);
6772 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6773 SSL_CTX_generate_session_ticket_fn gen_cb,
6774 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6777 ctx->generate_ticket_cb = gen_cb;
6778 ctx->decrypt_ticket_cb = dec_cb;
6779 ctx->ticket_cb_data = arg;
6783 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6784 SSL_allow_early_data_cb_fn cb,
6787 ctx->allow_early_data_cb = cb;
6788 ctx->allow_early_data_cb_data = arg;
6791 void SSL_set_allow_early_data_cb(SSL *s,
6792 SSL_allow_early_data_cb_fn cb,
6795 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6800 sc->allow_early_data_cb = cb;
6801 sc->allow_early_data_cb_data = arg;
6804 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6806 const char *properties)
6808 const EVP_CIPHER *ciph;
6810 ciph = tls_get_cipher_from_engine(nid);
6815 * If there is no engine cipher then we do an explicit fetch. This may fail
6816 * and that could be ok
6819 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6825 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6827 /* Don't up-ref an implicit EVP_CIPHER */
6828 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6832 * The cipher was explicitly fetched and therefore it is safe to cast
6835 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6838 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6843 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6845 * The cipher was explicitly fetched and therefore it is safe to cast
6848 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6852 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6854 const char *properties)
6858 md = tls_get_digest_from_engine(nid);
6862 /* Otherwise we do an explicit fetch */
6864 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6869 int ssl_evp_md_up_ref(const EVP_MD *md)
6871 /* Don't up-ref an implicit EVP_MD */
6872 if (EVP_MD_get0_provider(md) == NULL)
6876 * The digest was explicitly fetched and therefore it is safe to cast
6879 return EVP_MD_up_ref((EVP_MD *)md);
6882 void ssl_evp_md_free(const EVP_MD *md)
6887 if (EVP_MD_get0_provider(md) != NULL) {
6889 * The digest was explicitly fetched and therefore it is safe to cast
6892 EVP_MD_free((EVP_MD *)md);
6896 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6898 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6903 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6904 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6905 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6908 EVP_PKEY_free(sc->cert->dh_tmp);
6909 sc->cert->dh_tmp = dhpkey;
6913 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6915 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6916 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6917 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6920 EVP_PKEY_free(ctx->cert->dh_tmp);
6921 ctx->cert->dh_tmp = dhpkey;