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->rlayer.rrlnext);
660 sc->rlayer.rrlnext = NULL;
662 if (!ssl_set_new_record_layer(sc,
663 SSL_CONNECTION_IS_DTLS(sc) ? DTLS_ANY_VERSION : TLS_ANY_VERSION,
664 OSSL_RECORD_DIRECTION_READ,
665 OSSL_RECORD_PROTECTION_LEVEL_NONE,
666 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
667 NID_undef, NULL, NULL)) {
668 /* SSLfatal already called */
675 #ifndef OPENSSL_NO_DEPRECATED_3_0
676 /** Used to change an SSL_CTXs default SSL method type */
677 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
679 STACK_OF(SSL_CIPHER) *sk;
683 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
684 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
687 sk = ssl_create_cipher_list(ctx,
688 ctx->tls13_ciphersuites,
690 &(ctx->cipher_list_by_id),
691 OSSL_default_cipher_list(), ctx->cert);
692 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
693 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
700 SSL *SSL_new(SSL_CTX *ctx)
703 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
706 if (ctx->method == NULL) {
707 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
710 return ctx->method->ssl_new(ctx);
713 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
718 ssl->lock = CRYPTO_THREAD_lock_new();
719 if (ssl->lock == NULL)
725 ssl->method = ctx->method;
727 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
733 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
738 s = OPENSSL_zalloc(sizeof(*s));
743 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
749 #ifndef OPENSSL_NO_QUIC
750 /* set the parent (user visible) ssl to self */
754 RECORD_LAYER_init(&s->rlayer, s);
756 s->options = ctx->options;
757 s->dane.flags = ctx->dane.flags;
758 s->min_proto_version = ctx->min_proto_version;
759 s->max_proto_version = ctx->max_proto_version;
761 s->max_cert_list = ctx->max_cert_list;
762 s->max_early_data = ctx->max_early_data;
763 s->recv_max_early_data = ctx->recv_max_early_data;
764 s->num_tickets = ctx->num_tickets;
765 s->pha_enabled = ctx->pha_enabled;
767 /* Shallow copy of the ciphersuites stack */
768 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
769 if (s->tls13_ciphersuites == NULL)
773 * Earlier library versions used to copy the pointer to the CERT, not
774 * its contents; only when setting new parameters for the per-SSL
775 * copy, ssl_cert_new would be called (and the direct reference to
776 * the per-SSL_CTX settings would be lost, but those still were
777 * indirectly accessed for various purposes, and for that reason they
778 * used to be known as s->ctx->default_cert). Now we don't look at the
779 * SSL_CTX's CERT after having duplicated it once.
781 s->cert = ssl_cert_dup(ctx->cert);
785 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
786 s->msg_callback = ctx->msg_callback;
787 s->msg_callback_arg = ctx->msg_callback_arg;
788 s->verify_mode = ctx->verify_mode;
789 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
790 s->record_padding_cb = ctx->record_padding_cb;
791 s->record_padding_arg = ctx->record_padding_arg;
792 s->block_padding = ctx->block_padding;
793 s->sid_ctx_length = ctx->sid_ctx_length;
794 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
796 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
797 s->verify_callback = ctx->default_verify_callback;
798 s->generate_session_id = ctx->generate_session_id;
800 s->param = X509_VERIFY_PARAM_new();
801 if (s->param == NULL)
803 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
804 s->quiet_shutdown = ctx->quiet_shutdown;
806 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
807 s->max_send_fragment = ctx->max_send_fragment;
808 s->split_send_fragment = ctx->split_send_fragment;
809 s->max_pipelines = ctx->max_pipelines;
810 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
813 s->ext.debug_arg = NULL;
814 s->ext.ticket_expected = 0;
815 s->ext.status_type = ctx->ext.status_type;
816 s->ext.status_expected = 0;
817 s->ext.ocsp.ids = NULL;
818 s->ext.ocsp.exts = NULL;
819 s->ext.ocsp.resp = NULL;
820 s->ext.ocsp.resp_len = 0;
822 s->session_ctx = ctx;
823 if (ctx->ext.ecpointformats) {
824 s->ext.ecpointformats =
825 OPENSSL_memdup(ctx->ext.ecpointformats,
826 ctx->ext.ecpointformats_len);
827 if (!s->ext.ecpointformats) {
828 s->ext.ecpointformats_len = 0;
831 s->ext.ecpointformats_len =
832 ctx->ext.ecpointformats_len;
834 if (ctx->ext.supportedgroups) {
835 s->ext.supportedgroups =
836 OPENSSL_memdup(ctx->ext.supportedgroups,
837 ctx->ext.supportedgroups_len
838 * sizeof(*ctx->ext.supportedgroups));
839 if (!s->ext.supportedgroups) {
840 s->ext.supportedgroups_len = 0;
843 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
846 #ifndef OPENSSL_NO_NEXTPROTONEG
850 if (ctx->ext.alpn != NULL) {
851 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
852 if (s->ext.alpn == NULL) {
856 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
857 s->ext.alpn_len = ctx->ext.alpn_len;
860 s->verified_chain = NULL;
861 s->verify_result = X509_V_OK;
863 s->default_passwd_callback = ctx->default_passwd_callback;
864 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
866 s->key_update = SSL_KEY_UPDATE_NONE;
868 s->allow_early_data_cb = ctx->allow_early_data_cb;
869 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
871 if (!ssl->method->ssl_init(ssl))
874 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
879 #ifndef OPENSSL_NO_PSK
880 s->psk_client_callback = ctx->psk_client_callback;
881 s->psk_server_callback = ctx->psk_server_callback;
883 s->psk_find_session_cb = ctx->psk_find_session_cb;
884 s->psk_use_session_cb = ctx->psk_use_session_cb;
886 s->async_cb = ctx->async_cb;
887 s->async_cb_arg = ctx->async_cb_arg;
891 #ifndef OPENSSL_NO_CT
892 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
893 ctx->ct_validation_callback_arg))
900 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
904 int SSL_is_dtls(const SSL *s)
906 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
911 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
914 int SSL_up_ref(SSL *s)
918 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
921 REF_PRINT_COUNT("SSL", s);
922 REF_ASSERT_ISNT(i < 2);
923 return ((i > 1) ? 1 : 0);
926 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
927 unsigned int sid_ctx_len)
929 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
930 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
933 ctx->sid_ctx_length = sid_ctx_len;
934 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
939 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
940 unsigned int sid_ctx_len)
942 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
947 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
948 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
951 sc->sid_ctx_length = sid_ctx_len;
952 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
957 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
959 if (!CRYPTO_THREAD_write_lock(ctx->lock))
961 ctx->generate_session_id = cb;
962 CRYPTO_THREAD_unlock(ctx->lock);
966 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
968 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
970 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
972 sc->generate_session_id = cb;
973 CRYPTO_THREAD_unlock(ssl->lock);
977 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
981 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
982 * we can "construct" a session to give us the desired check - i.e. to
983 * find if there's a session in the hash table that would conflict with
984 * any new session built out of this id/id_len and the ssl_version in use
988 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
990 if (sc == NULL || id_len > sizeof(r.session_id))
993 r.ssl_version = sc->version;
994 r.session_id_length = id_len;
995 memcpy(r.session_id, id, id_len);
997 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
999 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1000 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1004 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1006 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1009 int SSL_set_purpose(SSL *s, int purpose)
1011 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1016 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1019 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1021 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1024 int SSL_set_trust(SSL *s, int trust)
1026 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1031 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1034 int SSL_set1_host(SSL *s, const char *hostname)
1036 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1041 /* If a hostname is provided and parses as an IP address,
1042 * treat it as such. */
1043 if (hostname != NULL
1044 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1047 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1050 int SSL_add1_host(SSL *s, const char *hostname)
1052 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1057 /* If a hostname is provided and parses as an IP address,
1058 * treat it as such. */
1061 ASN1_OCTET_STRING *ip;
1064 ip = a2i_IPADDRESS(hostname);
1066 /* We didn't want it; only to check if it *is* an IP address */
1067 ASN1_OCTET_STRING_free(ip);
1069 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1072 OPENSSL_free(old_ip);
1073 /* There can be only one IP address */
1077 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1081 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1084 void SSL_set_hostflags(SSL *s, unsigned int flags)
1086 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1091 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1094 const char *SSL_get0_peername(SSL *s)
1096 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1101 return X509_VERIFY_PARAM_get0_peername(sc->param);
1104 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1106 return dane_ctx_enable(&ctx->dane);
1109 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1111 unsigned long orig = ctx->dane.flags;
1113 ctx->dane.flags |= flags;
1117 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1119 unsigned long orig = ctx->dane.flags;
1121 ctx->dane.flags &= ~flags;
1125 int SSL_dane_enable(SSL *s, const char *basedomain)
1128 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1134 if (s->ctx->dane.mdmax == 0) {
1135 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1138 if (dane->trecs != NULL) {
1139 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1144 * Default SNI name. This rejects empty names, while set1_host below
1145 * accepts them and disables host name checks. To avoid side-effects with
1146 * invalid input, set the SNI name first.
1148 if (sc->ext.hostname == NULL) {
1149 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1150 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1155 /* Primary RFC6125 reference identifier */
1156 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1157 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1163 dane->dctx = &s->ctx->dane;
1164 dane->trecs = sk_danetls_record_new_null();
1166 if (dane->trecs == NULL) {
1167 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1173 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1176 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1181 orig = sc->dane.flags;
1183 sc->dane.flags |= flags;
1187 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1190 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1195 orig = sc->dane.flags;
1197 sc->dane.flags &= ~flags;
1201 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1204 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1211 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1215 *mcert = dane->mcert;
1217 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1222 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1223 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1226 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1233 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1237 *usage = dane->mtlsa->usage;
1239 *selector = dane->mtlsa->selector;
1241 *mtype = dane->mtlsa->mtype;
1243 *data = dane->mtlsa->data;
1245 *dlen = dane->mtlsa->dlen;
1250 SSL_DANE *SSL_get0_dane(SSL *s)
1252 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1260 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1261 uint8_t mtype, const unsigned char *data, size_t dlen)
1263 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1268 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1271 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1274 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1277 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1279 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1282 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1284 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1289 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1292 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1297 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1299 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1307 void SSL_certs_clear(SSL *s)
1309 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1314 ssl_cert_clear_certs(sc->cert);
1317 void SSL_free(SSL *s)
1323 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1324 REF_PRINT_COUNT("SSL", s);
1327 REF_ASSERT_ISNT(i < 0);
1329 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1331 if (s->method != NULL)
1332 s->method->ssl_free(s);
1334 SSL_CTX_free(s->ctx);
1335 CRYPTO_THREAD_lock_free(s->lock);
1340 void ossl_ssl_connection_free(SSL *ssl)
1344 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1348 X509_VERIFY_PARAM_free(s->param);
1349 dane_final(&s->dane);
1351 RECORD_LAYER_clear(&s->rlayer);
1353 /* Ignore return value */
1354 ssl_free_wbio_buffer(s);
1356 BIO_free_all(s->wbio);
1358 BIO_free_all(s->rbio);
1361 BUF_MEM_free(s->init_buf);
1363 /* add extra stuff */
1364 sk_SSL_CIPHER_free(s->cipher_list);
1365 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1366 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1367 sk_SSL_CIPHER_free(s->peer_ciphers);
1369 /* Make the next call work :-) */
1370 if (s->session != NULL) {
1371 ssl_clear_bad_session(s);
1372 SSL_SESSION_free(s->session);
1374 SSL_SESSION_free(s->psksession);
1375 OPENSSL_free(s->psksession_id);
1379 ssl_cert_free(s->cert);
1380 OPENSSL_free(s->shared_sigalgs);
1381 /* Free up if allocated */
1383 OPENSSL_free(s->ext.hostname);
1384 SSL_CTX_free(s->session_ctx);
1385 OPENSSL_free(s->ext.ecpointformats);
1386 OPENSSL_free(s->ext.peer_ecpointformats);
1387 OPENSSL_free(s->ext.supportedgroups);
1388 OPENSSL_free(s->ext.peer_supportedgroups);
1389 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1390 #ifndef OPENSSL_NO_OCSP
1391 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1393 #ifndef OPENSSL_NO_CT
1394 SCT_LIST_free(s->scts);
1395 OPENSSL_free(s->ext.scts);
1397 OPENSSL_free(s->ext.ocsp.resp);
1398 OPENSSL_free(s->ext.alpn);
1399 OPENSSL_free(s->ext.tls13_cookie);
1400 if (s->clienthello != NULL)
1401 OPENSSL_free(s->clienthello->pre_proc_exts);
1402 OPENSSL_free(s->clienthello);
1403 OPENSSL_free(s->pha_context);
1404 EVP_MD_CTX_free(s->pha_dgst);
1406 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1407 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1409 OSSL_STACK_OF_X509_free(s->verified_chain);
1411 if (ssl->method != NULL)
1412 ssl->method->ssl_deinit(ssl);
1414 ASYNC_WAIT_CTX_free(s->waitctx);
1416 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1417 OPENSSL_free(s->ext.npn);
1420 #ifndef OPENSSL_NO_SRTP
1421 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1425 void SSL_set0_rbio(SSL *s, BIO *rbio)
1427 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1432 BIO_free_all(sc->rbio);
1434 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1437 void SSL_set0_wbio(SSL *s, BIO *wbio)
1439 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1445 * If the output buffering BIO is still in place, remove it
1447 if (sc->bbio != NULL)
1448 sc->wbio = BIO_pop(sc->wbio);
1450 BIO_free_all(sc->wbio);
1453 /* Re-attach |bbio| to the new |wbio|. */
1454 if (sc->bbio != NULL)
1455 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1458 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1461 * For historical reasons, this function has many different cases in
1462 * ownership handling.
1465 /* If nothing has changed, do nothing */
1466 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1470 * If the two arguments are equal then one fewer reference is granted by the
1471 * caller than we want to take
1473 if (rbio != NULL && rbio == wbio)
1477 * If only the wbio is changed only adopt one reference.
1479 if (rbio == SSL_get_rbio(s)) {
1480 SSL_set0_wbio(s, wbio);
1484 * There is an asymmetry here for historical reasons. If only the rbio is
1485 * changed AND the rbio and wbio were originally different, then we only
1486 * adopt one reference.
1488 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1489 SSL_set0_rbio(s, rbio);
1493 /* Otherwise, adopt both references. */
1494 SSL_set0_rbio(s, rbio);
1495 SSL_set0_wbio(s, wbio);
1498 BIO *SSL_get_rbio(const SSL *s)
1500 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1508 BIO *SSL_get_wbio(const SSL *s)
1510 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1515 if (sc->bbio != NULL) {
1517 * If |bbio| is active, the true caller-configured BIO is its
1520 return BIO_next(sc->bbio);
1525 int SSL_get_fd(const SSL *s)
1527 return SSL_get_rfd(s);
1530 int SSL_get_rfd(const SSL *s)
1535 b = SSL_get_rbio(s);
1536 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1538 BIO_get_fd(r, &ret);
1542 int SSL_get_wfd(const SSL *s)
1547 b = SSL_get_wbio(s);
1548 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1550 BIO_get_fd(r, &ret);
1554 #ifndef OPENSSL_NO_SOCK
1555 int SSL_set_fd(SSL *s, int fd)
1560 bio = BIO_new(BIO_s_socket());
1563 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1566 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1567 SSL_set_bio(s, bio, bio);
1568 #ifndef OPENSSL_NO_KTLS
1570 * The new socket is created successfully regardless of ktls_enable.
1571 * ktls_enable doesn't change any functionality of the socket, except
1572 * changing the setsockopt to enable the processing of ktls_start.
1573 * Thus, it is not a problem to call it for non-TLS sockets.
1576 #endif /* OPENSSL_NO_KTLS */
1582 int SSL_set_wfd(SSL *s, int fd)
1584 BIO *rbio = SSL_get_rbio(s);
1586 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1587 || (int)BIO_get_fd(rbio, NULL) != fd) {
1588 BIO *bio = BIO_new(BIO_s_socket());
1591 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1594 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1595 SSL_set0_wbio(s, bio);
1596 #ifndef OPENSSL_NO_KTLS
1598 * The new socket is created successfully regardless of ktls_enable.
1599 * ktls_enable doesn't change any functionality of the socket, except
1600 * changing the setsockopt to enable the processing of ktls_start.
1601 * Thus, it is not a problem to call it for non-TLS sockets.
1604 #endif /* OPENSSL_NO_KTLS */
1607 SSL_set0_wbio(s, rbio);
1612 int SSL_set_rfd(SSL *s, int fd)
1614 BIO *wbio = SSL_get_wbio(s);
1616 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1617 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1618 BIO *bio = BIO_new(BIO_s_socket());
1621 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1624 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1625 SSL_set0_rbio(s, bio);
1628 SSL_set0_rbio(s, wbio);
1635 /* return length of latest Finished message we sent, copy to 'buf' */
1636 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1639 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1644 ret = sc->s3.tmp.finish_md_len;
1647 memcpy(buf, sc->s3.tmp.finish_md, count);
1651 /* return length of latest Finished message we expected, copy to 'buf' */
1652 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1655 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1660 ret = sc->s3.tmp.peer_finish_md_len;
1663 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1667 int SSL_get_verify_mode(const SSL *s)
1669 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1674 return sc->verify_mode;
1677 int SSL_get_verify_depth(const SSL *s)
1679 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1684 return X509_VERIFY_PARAM_get_depth(sc->param);
1687 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1688 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1693 return sc->verify_callback;
1696 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1698 return ctx->verify_mode;
1701 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1703 return X509_VERIFY_PARAM_get_depth(ctx->param);
1706 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1707 return ctx->default_verify_callback;
1710 void SSL_set_verify(SSL *s, int mode,
1711 int (*callback) (int ok, X509_STORE_CTX *ctx))
1713 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1718 sc->verify_mode = mode;
1719 if (callback != NULL)
1720 sc->verify_callback = callback;
1723 void SSL_set_verify_depth(SSL *s, int depth)
1725 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1730 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1733 void SSL_set_read_ahead(SSL *s, int yes)
1735 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1740 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1743 int SSL_get_read_ahead(const SSL *s)
1745 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1750 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1753 int SSL_pending(const SSL *s)
1755 size_t pending = s->method->ssl_pending(s);
1758 * SSL_pending cannot work properly if read-ahead is enabled
1759 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1760 * impossible to fix since SSL_pending cannot report errors that may be
1761 * observed while scanning the new data. (Note that SSL_pending() is
1762 * often used as a boolean value, so we'd better not return -1.)
1764 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1765 * we just return INT_MAX.
1767 return pending < INT_MAX ? (int)pending : INT_MAX;
1770 int SSL_has_pending(const SSL *s)
1773 * Similar to SSL_pending() but returns a 1 to indicate that we have
1774 * processed or unprocessed data available or 0 otherwise (as opposed to the
1775 * number of bytes available). Unlike SSL_pending() this will take into
1776 * account read_ahead data. A 1 return simply indicates that we have data.
1777 * That data may not result in any application data, or we may fail to parse
1778 * the records for some reason.
1780 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1782 /* Check buffered app data if any first */
1783 if (SSL_CONNECTION_IS_DTLS(sc)) {
1787 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1788 while ((item = pqueue_next(&iter)) != NULL) {
1790 if (rdata->length > 0)
1795 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1798 return RECORD_LAYER_read_pending(&sc->rlayer);
1801 X509 *SSL_get1_peer_certificate(const SSL *s)
1803 X509 *r = SSL_get0_peer_certificate(s);
1811 X509 *SSL_get0_peer_certificate(const SSL *s)
1813 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1818 if (sc->session == NULL)
1821 return sc->session->peer;
1824 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1827 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1832 if (sc->session == NULL)
1835 r = sc->session->peer_chain;
1838 * If we are a client, cert_chain includes the peer's own certificate; if
1839 * we are a server, it does not.
1846 * Now in theory, since the calling process own 't' it should be safe to
1847 * modify. We need to be able to read f without being hassled
1849 int SSL_copy_session_id(SSL *t, const SSL *f)
1852 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1853 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1854 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1856 if (tsc == NULL || fsc == NULL)
1859 /* Do we need to do SSL locking? */
1860 if (!SSL_set_session(t, SSL_get_session(f))) {
1865 * what if we are setup for one protocol version but want to talk another
1867 if (t->method != f->method) {
1868 t->method->ssl_deinit(t);
1869 t->method = f->method;
1870 if (t->method->ssl_init(t) == 0)
1874 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1875 ssl_cert_free(tsc->cert);
1876 tsc->cert = fsc->cert;
1877 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1884 /* Fix this so it checks all the valid key/cert options */
1885 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1887 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1888 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1891 if (ctx->cert->key->privatekey == NULL) {
1892 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1895 return X509_check_private_key
1896 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1899 /* Fix this function so that it takes an optional type parameter */
1900 int SSL_check_private_key(const SSL *ssl)
1902 const SSL_CONNECTION *sc;
1904 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1905 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1908 if (sc->cert->key->x509 == NULL) {
1909 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1912 if (sc->cert->key->privatekey == NULL) {
1913 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1916 return X509_check_private_key(sc->cert->key->x509,
1917 sc->cert->key->privatekey);
1920 int SSL_waiting_for_async(SSL *s)
1922 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1933 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1935 ASYNC_WAIT_CTX *ctx;
1936 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1941 if ((ctx = sc->waitctx) == NULL)
1943 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1946 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1947 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1949 ASYNC_WAIT_CTX *ctx;
1950 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1955 if ((ctx = sc->waitctx) == NULL)
1957 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1961 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1963 ctx->async_cb = callback;
1967 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1969 ctx->async_cb_arg = arg;
1973 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1975 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1980 sc->async_cb = callback;
1984 int SSL_set_async_callback_arg(SSL *s, void *arg)
1986 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1991 sc->async_cb_arg = arg;
1995 int SSL_get_async_status(SSL *s, int *status)
1997 ASYNC_WAIT_CTX *ctx;
1998 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2003 if ((ctx = sc->waitctx) == NULL)
2005 *status = ASYNC_WAIT_CTX_get_status(ctx);
2009 int SSL_accept(SSL *s)
2011 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2016 if (sc->handshake_func == NULL) {
2017 /* Not properly initialized yet */
2018 SSL_set_accept_state(s);
2021 return SSL_do_handshake(s);
2024 int SSL_connect(SSL *s)
2026 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2031 if (sc->handshake_func == NULL) {
2032 /* Not properly initialized yet */
2033 SSL_set_connect_state(s);
2036 return SSL_do_handshake(s);
2039 long SSL_get_default_timeout(const SSL *s)
2041 return s->method->get_timeout();
2044 static int ssl_async_wait_ctx_cb(void *arg)
2046 SSL *s = (SSL *)arg;
2047 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2052 return sc->async_cb(s, sc->async_cb_arg);
2055 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2056 int (*func) (void *))
2059 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2064 if (sc->waitctx == NULL) {
2065 sc->waitctx = ASYNC_WAIT_CTX_new();
2066 if (sc->waitctx == NULL)
2068 if (sc->async_cb != NULL
2069 && !ASYNC_WAIT_CTX_set_callback
2070 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2074 sc->rwstate = SSL_NOTHING;
2075 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2076 sizeof(struct ssl_async_args))) {
2078 sc->rwstate = SSL_NOTHING;
2079 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2082 sc->rwstate = SSL_ASYNC_PAUSED;
2085 sc->rwstate = SSL_ASYNC_NO_JOBS;
2091 sc->rwstate = SSL_NOTHING;
2092 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2093 /* Shouldn't happen */
2098 static int ssl_io_intern(void *vargs)
2100 struct ssl_async_args *args;
2106 args = (struct ssl_async_args *)vargs;
2110 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2113 switch (args->type) {
2115 return args->f.func_read(s, buf, num, &sc->asyncrw);
2117 return args->f.func_write(s, buf, num, &sc->asyncrw);
2119 return args->f.func_other(s);
2124 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2126 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2131 if (sc->handshake_func == NULL) {
2132 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2136 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2137 sc->rwstate = SSL_NOTHING;
2141 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2142 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2143 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2147 * If we are a client and haven't received the ServerHello etc then we
2150 ossl_statem_check_finish_init(sc, 0);
2152 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2153 struct ssl_async_args args;
2159 args.type = READFUNC;
2160 args.f.func_read = s->method->ssl_read;
2162 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2163 *readbytes = sc->asyncrw;
2166 return s->method->ssl_read(s, buf, num, readbytes);
2170 int SSL_read(SSL *s, void *buf, int num)
2176 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2180 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2183 * The cast is safe here because ret should be <= INT_MAX because num is
2187 ret = (int)readbytes;
2192 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2194 int ret = ssl_read_internal(s, buf, num, readbytes);
2201 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2204 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2206 /* TODO(QUIC): This will need special handling for QUIC */
2211 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2212 return SSL_READ_EARLY_DATA_ERROR;
2215 switch (sc->early_data_state) {
2216 case SSL_EARLY_DATA_NONE:
2217 if (!SSL_in_before(s)) {
2218 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2219 return SSL_READ_EARLY_DATA_ERROR;
2223 case SSL_EARLY_DATA_ACCEPT_RETRY:
2224 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2225 ret = SSL_accept(s);
2228 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2229 return SSL_READ_EARLY_DATA_ERROR;
2233 case SSL_EARLY_DATA_READ_RETRY:
2234 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2235 sc->early_data_state = SSL_EARLY_DATA_READING;
2236 ret = SSL_read_ex(s, buf, num, readbytes);
2238 * State machine will update early_data_state to
2239 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2242 if (ret > 0 || (ret <= 0 && sc->early_data_state
2243 != SSL_EARLY_DATA_FINISHED_READING)) {
2244 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2245 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2246 : SSL_READ_EARLY_DATA_ERROR;
2249 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2252 return SSL_READ_EARLY_DATA_FINISH;
2255 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2256 return SSL_READ_EARLY_DATA_ERROR;
2260 int SSL_get_early_data_status(const SSL *s)
2262 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2264 /* TODO(QUIC): This will need special handling for QUIC */
2268 return sc->ext.early_data;
2271 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2273 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2278 if (sc->handshake_func == NULL) {
2279 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2283 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2286 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2287 struct ssl_async_args args;
2293 args.type = READFUNC;
2294 args.f.func_read = s->method->ssl_peek;
2296 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2297 *readbytes = sc->asyncrw;
2300 return s->method->ssl_peek(s, buf, num, readbytes);
2304 int SSL_peek(SSL *s, void *buf, int num)
2310 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2314 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2317 * The cast is safe here because ret should be <= INT_MAX because num is
2321 ret = (int)readbytes;
2327 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2329 int ret = ssl_peek_internal(s, buf, num, readbytes);
2336 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2338 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2343 if (sc->handshake_func == NULL) {
2344 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2348 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2349 sc->rwstate = SSL_NOTHING;
2350 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2354 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2355 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2356 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2357 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2360 /* If we are a client and haven't sent the Finished we better do that */
2361 ossl_statem_check_finish_init(sc, 1);
2363 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2365 struct ssl_async_args args;
2368 args.buf = (void *)buf;
2370 args.type = WRITEFUNC;
2371 args.f.func_write = s->method->ssl_write;
2373 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2374 *written = sc->asyncrw;
2377 return s->method->ssl_write(s, buf, num, written);
2381 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2384 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2389 if (sc->handshake_func == NULL) {
2390 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2394 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2395 sc->rwstate = SSL_NOTHING;
2396 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2400 if (!BIO_get_ktls_send(sc->wbio)) {
2401 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2405 /* If we have an alert to send, lets send it */
2406 if (sc->s3.alert_dispatch) {
2407 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2409 /* SSLfatal() already called if appropriate */
2412 /* if it went, fall through and send more stuff */
2415 sc->rwstate = SSL_WRITING;
2416 if (BIO_flush(sc->wbio) <= 0) {
2417 if (!BIO_should_retry(sc->wbio)) {
2418 sc->rwstate = SSL_NOTHING;
2421 set_sys_error(EAGAIN);
2427 #ifdef OPENSSL_NO_KTLS
2428 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2429 "can't call ktls_sendfile(), ktls disabled");
2432 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2434 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2435 if ((get_last_sys_error() == EAGAIN) ||
2436 (get_last_sys_error() == EINTR) ||
2437 (get_last_sys_error() == EBUSY))
2438 BIO_set_retry_write(sc->wbio);
2441 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2444 sc->rwstate = SSL_NOTHING;
2449 int SSL_write(SSL *s, const void *buf, int num)
2455 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2459 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2462 * The cast is safe here because ret should be <= INT_MAX because num is
2471 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2473 int ret = ssl_write_internal(s, buf, num, written);
2480 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2482 int ret, early_data_state;
2484 uint32_t partialwrite;
2485 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2487 /* TODO(QUIC): This will need special handling for QUIC */
2491 switch (sc->early_data_state) {
2492 case SSL_EARLY_DATA_NONE:
2494 || !SSL_in_before(s)
2495 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2496 && (sc->psk_use_session_cb == NULL))) {
2497 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2502 case SSL_EARLY_DATA_CONNECT_RETRY:
2503 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2504 ret = SSL_connect(s);
2507 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2512 case SSL_EARLY_DATA_WRITE_RETRY:
2513 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2515 * We disable partial write for early data because we don't keep track
2516 * of how many bytes we've written between the SSL_write_ex() call and
2517 * the flush if the flush needs to be retried)
2519 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2520 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2521 ret = SSL_write_ex(s, buf, num, &writtmp);
2522 sc->mode |= partialwrite;
2524 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2527 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2530 case SSL_EARLY_DATA_WRITE_FLUSH:
2531 /* The buffering BIO is still in place so we need to flush it */
2532 if (statem_flush(sc) != 1)
2535 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2538 case SSL_EARLY_DATA_FINISHED_READING:
2539 case SSL_EARLY_DATA_READ_RETRY:
2540 early_data_state = sc->early_data_state;
2541 /* We are a server writing to an unauthenticated client */
2542 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2543 ret = SSL_write_ex(s, buf, num, written);
2544 /* The buffering BIO is still in place */
2546 (void)BIO_flush(sc->wbio);
2547 sc->early_data_state = early_data_state;
2551 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2556 int SSL_shutdown(SSL *s)
2559 * Note that this function behaves differently from what one might
2560 * expect. Return values are 0 for no success (yet), 1 for success; but
2561 * calling it once is usually not enough, even if blocking I/O is used
2562 * (see ssl3_shutdown).
2564 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2569 if (sc->handshake_func == NULL) {
2570 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2574 if (!SSL_in_init(s)) {
2575 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2576 struct ssl_async_args args;
2578 memset(&args, 0, sizeof(args));
2580 args.type = OTHERFUNC;
2581 args.f.func_other = s->method->ssl_shutdown;
2583 return ssl_start_async_job(s, &args, ssl_io_intern);
2585 return s->method->ssl_shutdown(s);
2588 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2593 int SSL_key_update(SSL *s, int updatetype)
2595 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2600 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2601 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2605 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2606 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2607 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2611 if (!SSL_is_init_finished(s)) {
2612 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2616 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2617 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2621 ossl_statem_set_in_init(sc, 1);
2622 sc->key_update = updatetype;
2626 int SSL_get_key_update_type(const SSL *s)
2628 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2633 return sc->key_update;
2637 * Can we accept a renegotiation request? If yes, set the flag and
2638 * return 1 if yes. If not, raise error and return 0.
2640 static int can_renegotiate(const SSL_CONNECTION *sc)
2642 if (SSL_CONNECTION_IS_TLS13(sc)) {
2643 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2647 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2648 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2655 int SSL_renegotiate(SSL *s)
2657 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2662 if (!can_renegotiate(sc))
2665 sc->renegotiate = 1;
2666 sc->new_session = 1;
2667 return s->method->ssl_renegotiate(s);
2670 int SSL_renegotiate_abbreviated(SSL *s)
2672 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2677 if (!can_renegotiate(sc))
2680 sc->renegotiate = 1;
2681 sc->new_session = 0;
2682 return s->method->ssl_renegotiate(s);
2685 int SSL_renegotiate_pending(const SSL *s)
2687 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2693 * becomes true when negotiation is requested; false again once a
2694 * handshake has finished
2696 return (sc->renegotiate != 0);
2699 int SSL_new_session_ticket(SSL *s)
2701 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2706 /* If we are in init because we're sending tickets, okay to send more. */
2707 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2708 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2709 || !SSL_CONNECTION_IS_TLS13(sc))
2711 sc->ext.extra_tickets_expected++;
2712 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2713 ossl_statem_set_in_init(sc, 1);
2717 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2720 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2722 /* TODO(QUIC): Special handling for some ctrls will be needed */
2727 case SSL_CTRL_GET_READ_AHEAD:
2728 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2729 case SSL_CTRL_SET_READ_AHEAD:
2730 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2731 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2734 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2735 sc->msg_callback_arg = parg;
2739 return (sc->mode |= larg);
2740 case SSL_CTRL_CLEAR_MODE:
2741 return (sc->mode &= ~larg);
2742 case SSL_CTRL_GET_MAX_CERT_LIST:
2743 return (long)sc->max_cert_list;
2744 case SSL_CTRL_SET_MAX_CERT_LIST:
2747 l = (long)sc->max_cert_list;
2748 sc->max_cert_list = (size_t)larg;
2750 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2751 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2753 #ifndef OPENSSL_NO_KTLS
2754 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2756 #endif /* OPENSSL_NO_KTLS */
2757 sc->max_send_fragment = larg;
2758 if (sc->max_send_fragment < sc->split_send_fragment)
2759 sc->split_send_fragment = sc->max_send_fragment;
2761 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2762 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2764 sc->split_send_fragment = larg;
2766 case SSL_CTRL_SET_MAX_PIPELINES:
2767 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2769 sc->max_pipelines = larg;
2770 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2771 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2773 case SSL_CTRL_GET_RI_SUPPORT:
2774 return sc->s3.send_connection_binding;
2775 case SSL_CTRL_SET_RETRY_VERIFY:
2776 sc->rwstate = SSL_RETRY_VERIFY;
2778 case SSL_CTRL_CERT_FLAGS:
2779 return (sc->cert->cert_flags |= larg);
2780 case SSL_CTRL_CLEAR_CERT_FLAGS:
2781 return (sc->cert->cert_flags &= ~larg);
2783 case SSL_CTRL_GET_RAW_CIPHERLIST:
2785 if (sc->s3.tmp.ciphers_raw == NULL)
2787 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2788 return (int)sc->s3.tmp.ciphers_rawlen;
2790 return TLS_CIPHER_LEN;
2792 case SSL_CTRL_GET_EXTMS_SUPPORT:
2793 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2795 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2799 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2800 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2801 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2802 &sc->min_proto_version);
2803 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2804 return sc->min_proto_version;
2805 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2806 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2807 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2808 &sc->max_proto_version);
2809 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2810 return sc->max_proto_version;
2812 return s->method->ssl_ctrl(s, cmd, larg, parg);
2816 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2818 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2824 case SSL_CTRL_SET_MSG_CALLBACK:
2825 sc->msg_callback = (void (*)
2826 (int write_p, int version, int content_type,
2827 const void *buf, size_t len, SSL *ssl,
2832 return s->method->ssl_callback_ctrl(s, cmd, fp);
2836 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2838 return ctx->sessions;
2841 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2845 if (ssl_tsan_lock(ctx)) {
2846 res = tsan_load(stat);
2847 ssl_tsan_unlock(ctx);
2852 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2855 /* For some cases with ctx == NULL perform syntax checks */
2858 case SSL_CTRL_SET_GROUPS_LIST:
2859 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2860 case SSL_CTRL_SET_SIGALGS_LIST:
2861 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2862 return tls1_set_sigalgs_list(NULL, parg, 0);
2869 case SSL_CTRL_GET_READ_AHEAD:
2870 return ctx->read_ahead;
2871 case SSL_CTRL_SET_READ_AHEAD:
2872 l = ctx->read_ahead;
2873 ctx->read_ahead = larg;
2876 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2877 ctx->msg_callback_arg = parg;
2880 case SSL_CTRL_GET_MAX_CERT_LIST:
2881 return (long)ctx->max_cert_list;
2882 case SSL_CTRL_SET_MAX_CERT_LIST:
2885 l = (long)ctx->max_cert_list;
2886 ctx->max_cert_list = (size_t)larg;
2889 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2892 l = (long)ctx->session_cache_size;
2893 ctx->session_cache_size = (size_t)larg;
2895 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2896 return (long)ctx->session_cache_size;
2897 case SSL_CTRL_SET_SESS_CACHE_MODE:
2898 l = ctx->session_cache_mode;
2899 ctx->session_cache_mode = larg;
2901 case SSL_CTRL_GET_SESS_CACHE_MODE:
2902 return ctx->session_cache_mode;
2904 case SSL_CTRL_SESS_NUMBER:
2905 return lh_SSL_SESSION_num_items(ctx->sessions);
2906 case SSL_CTRL_SESS_CONNECT:
2907 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2908 case SSL_CTRL_SESS_CONNECT_GOOD:
2909 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2910 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2911 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2912 case SSL_CTRL_SESS_ACCEPT:
2913 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2914 case SSL_CTRL_SESS_ACCEPT_GOOD:
2915 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2916 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2917 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2918 case SSL_CTRL_SESS_HIT:
2919 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2920 case SSL_CTRL_SESS_CB_HIT:
2921 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2922 case SSL_CTRL_SESS_MISSES:
2923 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2924 case SSL_CTRL_SESS_TIMEOUTS:
2925 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2926 case SSL_CTRL_SESS_CACHE_FULL:
2927 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2929 return (ctx->mode |= larg);
2930 case SSL_CTRL_CLEAR_MODE:
2931 return (ctx->mode &= ~larg);
2932 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2933 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2935 ctx->max_send_fragment = larg;
2936 if (ctx->max_send_fragment < ctx->split_send_fragment)
2937 ctx->split_send_fragment = ctx->max_send_fragment;
2939 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2940 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2942 ctx->split_send_fragment = larg;
2944 case SSL_CTRL_SET_MAX_PIPELINES:
2945 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2947 ctx->max_pipelines = larg;
2949 case SSL_CTRL_CERT_FLAGS:
2950 return (ctx->cert->cert_flags |= larg);
2951 case SSL_CTRL_CLEAR_CERT_FLAGS:
2952 return (ctx->cert->cert_flags &= ~larg);
2953 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2954 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2955 && ssl_set_version_bound(ctx->method->version, (int)larg,
2956 &ctx->min_proto_version);
2957 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2958 return ctx->min_proto_version;
2959 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2960 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2961 && ssl_set_version_bound(ctx->method->version, (int)larg,
2962 &ctx->max_proto_version);
2963 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2964 return ctx->max_proto_version;
2966 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2970 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2973 case SSL_CTRL_SET_MSG_CALLBACK:
2974 ctx->msg_callback = (void (*)
2975 (int write_p, int version, int content_type,
2976 const void *buf, size_t len, SSL *ssl,
2981 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2985 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2994 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2995 const SSL_CIPHER *const *bp)
2997 if ((*ap)->id > (*bp)->id)
2999 if ((*ap)->id < (*bp)->id)
3005 * return a STACK of the ciphers available for the SSL and in order of
3008 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3010 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3013 if (sc->cipher_list != NULL) {
3014 return sc->cipher_list;
3015 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3016 return s->ctx->cipher_list;
3022 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3024 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3026 if (sc == NULL || !sc->server)
3028 return sc->peer_ciphers;
3031 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3033 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3040 ciphers = SSL_get_ciphers(s);
3043 if (!ssl_set_client_disabled(sc))
3045 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3046 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3047 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3049 sk = sk_SSL_CIPHER_new_null();
3052 if (!sk_SSL_CIPHER_push(sk, c)) {
3053 sk_SSL_CIPHER_free(sk);
3061 /** return a STACK of the ciphers available for the SSL and in order of
3063 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3066 if (s->cipher_list_by_id != NULL)
3067 return s->cipher_list_by_id;
3068 else if (s->ssl.ctx != NULL
3069 && s->ssl.ctx->cipher_list_by_id != NULL)
3070 return s->ssl.ctx->cipher_list_by_id;
3075 /** The old interface to get the same thing as SSL_get_ciphers() */
3076 const char *SSL_get_cipher_list(const SSL *s, int n)
3078 const SSL_CIPHER *c;
3079 STACK_OF(SSL_CIPHER) *sk;
3083 sk = SSL_get_ciphers(s);
3084 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3086 c = sk_SSL_CIPHER_value(sk, n);
3092 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3094 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3097 return ctx->cipher_list;
3102 * Distinguish between ciphers controlled by set_ciphersuite() and
3103 * set_cipher_list() when counting.
3105 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3108 const SSL_CIPHER *c;
3112 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3113 c = sk_SSL_CIPHER_value(sk, i);
3114 if (c->min_tls >= TLS1_3_VERSION)
3121 /** specify the ciphers to be used by default by the SSL_CTX */
3122 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3124 STACK_OF(SSL_CIPHER) *sk;
3126 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3127 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3130 * ssl_create_cipher_list may return an empty stack if it was unable to
3131 * find a cipher matching the given rule string (for example if the rule
3132 * string specifies a cipher which has been disabled). This is not an
3133 * error as far as ssl_create_cipher_list is concerned, and hence
3134 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3138 else if (cipher_list_tls12_num(sk) == 0) {
3139 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3145 /** specify the ciphers to be used by the SSL */
3146 int SSL_set_cipher_list(SSL *s, const char *str)
3148 STACK_OF(SSL_CIPHER) *sk;
3149 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3154 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3155 &sc->cipher_list, &sc->cipher_list_by_id, str,
3157 /* see comment in SSL_CTX_set_cipher_list */
3160 else if (cipher_list_tls12_num(sk) == 0) {
3161 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3167 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3170 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3171 const SSL_CIPHER *c;
3173 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3179 || sc->peer_ciphers == NULL
3184 clntsk = sc->peer_ciphers;
3185 srvrsk = SSL_get_ciphers(s);
3186 if (clntsk == NULL || srvrsk == NULL)
3189 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3192 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3195 c = sk_SSL_CIPHER_value(clntsk, i);
3196 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3199 n = strlen(c->name);
3216 * Return the requested servername (SNI) value. Note that the behaviour varies
3218 * - whether this is called by the client or the server,
3219 * - if we are before or during/after the handshake,
3220 * - if a resumption or normal handshake is being attempted/has occurred
3221 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3223 * Note that only the host_name type is defined (RFC 3546).
3225 const char *SSL_get_servername(const SSL *s, const int type)
3227 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3234 * If we don't know if we are the client or the server yet then we assume
3237 server = sc->handshake_func == NULL ? 0 : sc->server;
3239 if (type != TLSEXT_NAMETYPE_host_name)
3245 * In TLSv1.3 on the server SNI is not associated with the session
3246 * but in TLSv1.2 or below it is.
3248 * Before the handshake:
3251 * During/after the handshake (TLSv1.2 or below resumption occurred):
3252 * - If a servername was accepted by the server in the original
3253 * handshake then it will return that servername, or NULL otherwise.
3255 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3256 * - The function will return the servername requested by the client in
3257 * this handshake or NULL if none was requested.
3259 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3260 return sc->session->ext.hostname;
3265 * Before the handshake:
3266 * - If a servername has been set via a call to
3267 * SSL_set_tlsext_host_name() then it will return that servername
3268 * - If one has not been set, but a TLSv1.2 resumption is being
3269 * attempted and the session from the original handshake had a
3270 * servername accepted by the server then it will return that
3272 * - Otherwise it returns NULL
3274 * During/after the handshake (TLSv1.2 or below resumption occurred):
3275 * - If the session from the original handshake had a servername accepted
3276 * by the server then it will return that servername.
3277 * - Otherwise it returns the servername set via
3278 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3280 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3281 * - It will return the servername set via SSL_set_tlsext_host_name()
3282 * (or NULL if it was not called).
3284 if (SSL_in_before(s)) {
3285 if (sc->ext.hostname == NULL
3286 && sc->session != NULL
3287 && sc->session->ssl_version != TLS1_3_VERSION)
3288 return sc->session->ext.hostname;
3290 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3291 && sc->session->ext.hostname != NULL)
3292 return sc->session->ext.hostname;
3296 return sc->ext.hostname;
3299 int SSL_get_servername_type(const SSL *s)
3301 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3302 return TLSEXT_NAMETYPE_host_name;
3307 * SSL_select_next_proto implements the standard protocol selection. It is
3308 * expected that this function is called from the callback set by
3309 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3310 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3311 * not included in the length. A byte string of length 0 is invalid. No byte
3312 * string may be truncated. The current, but experimental algorithm for
3313 * selecting the protocol is: 1) If the server doesn't support NPN then this
3314 * is indicated to the callback. In this case, the client application has to
3315 * abort the connection or have a default application level protocol. 2) If
3316 * the server supports NPN, but advertises an empty list then the client
3317 * selects the first protocol in its list, but indicates via the API that this
3318 * fallback case was enacted. 3) Otherwise, the client finds the first
3319 * protocol in the server's list that it supports and selects this protocol.
3320 * This is because it's assumed that the server has better information about
3321 * which protocol a client should use. 4) If the client doesn't support any
3322 * of the server's advertised protocols, then this is treated the same as
3323 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3324 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3326 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3327 const unsigned char *server,
3328 unsigned int server_len,
3329 const unsigned char *client, unsigned int client_len)
3332 const unsigned char *result;
3333 int status = OPENSSL_NPN_UNSUPPORTED;
3336 * For each protocol in server preference order, see if we support it.
3338 for (i = 0; i < server_len;) {
3339 for (j = 0; j < client_len;) {
3340 if (server[i] == client[j] &&
3341 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3342 /* We found a match */
3343 result = &server[i];
3344 status = OPENSSL_NPN_NEGOTIATED;
3354 /* There's no overlap between our protocols and the server's list. */
3356 status = OPENSSL_NPN_NO_OVERLAP;
3359 *out = (unsigned char *)result + 1;
3360 *outlen = result[0];
3364 #ifndef OPENSSL_NO_NEXTPROTONEG
3366 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3367 * client's requested protocol for this connection and returns 0. If the
3368 * client didn't request any protocol, then *data is set to NULL. Note that
3369 * the client can request any protocol it chooses. The value returned from
3370 * this function need not be a member of the list of supported protocols
3371 * provided by the callback.
3373 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3376 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3379 /* We have no other way to indicate error */
3385 *data = sc->ext.npn;
3386 if (*data == NULL) {
3389 *len = (unsigned int)sc->ext.npn_len;
3394 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3395 * a TLS server needs a list of supported protocols for Next Protocol
3396 * Negotiation. The returned list must be in wire format. The list is
3397 * returned by setting |out| to point to it and |outlen| to its length. This
3398 * memory will not be modified, but one should assume that the SSL* keeps a
3399 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3400 * wishes to advertise. Otherwise, no such extension will be included in the
3403 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3404 SSL_CTX_npn_advertised_cb_func cb,
3407 ctx->ext.npn_advertised_cb = cb;
3408 ctx->ext.npn_advertised_cb_arg = arg;
3412 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3413 * client needs to select a protocol from the server's provided list. |out|
3414 * must be set to point to the selected protocol (which may be within |in|).
3415 * The length of the protocol name must be written into |outlen|. The
3416 * server's advertised protocols are provided in |in| and |inlen|. The
3417 * callback can assume that |in| is syntactically valid. The client must
3418 * select a protocol. It is fatal to the connection if this callback returns
3419 * a value other than SSL_TLSEXT_ERR_OK.
3421 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3422 SSL_CTX_npn_select_cb_func cb,
3425 ctx->ext.npn_select_cb = cb;
3426 ctx->ext.npn_select_cb_arg = arg;
3430 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3434 if (protos_len < 2 || protos == NULL)
3437 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3438 if (protos[idx] == 0)
3441 return idx == protos_len;
3444 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3445 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3446 * length-prefixed strings). Returns 0 on success.
3448 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3449 unsigned int protos_len)
3451 unsigned char *alpn;
3453 if (protos_len == 0 || protos == NULL) {
3454 OPENSSL_free(ctx->ext.alpn);
3455 ctx->ext.alpn = NULL;
3456 ctx->ext.alpn_len = 0;
3459 /* Not valid per RFC */
3460 if (!alpn_value_ok(protos, protos_len))
3463 alpn = OPENSSL_memdup(protos, protos_len);
3465 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3468 OPENSSL_free(ctx->ext.alpn);
3469 ctx->ext.alpn = alpn;
3470 ctx->ext.alpn_len = protos_len;
3476 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3477 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3478 * length-prefixed strings). Returns 0 on success.
3480 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3481 unsigned int protos_len)
3483 unsigned char *alpn;
3484 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3489 if (protos_len == 0 || protos == NULL) {
3490 OPENSSL_free(sc->ext.alpn);
3491 sc->ext.alpn = NULL;
3492 sc->ext.alpn_len = 0;
3495 /* Not valid per RFC */
3496 if (!alpn_value_ok(protos, protos_len))
3499 alpn = OPENSSL_memdup(protos, protos_len);
3501 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3504 OPENSSL_free(sc->ext.alpn);
3505 sc->ext.alpn = alpn;
3506 sc->ext.alpn_len = protos_len;
3512 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3513 * called during ClientHello processing in order to select an ALPN protocol
3514 * from the client's list of offered protocols.
3516 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3517 SSL_CTX_alpn_select_cb_func cb,
3520 ctx->ext.alpn_select_cb = cb;
3521 ctx->ext.alpn_select_cb_arg = arg;
3525 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3526 * On return it sets |*data| to point to |*len| bytes of protocol name
3527 * (not including the leading length-prefix byte). If the server didn't
3528 * respond with a negotiated protocol then |*len| will be zero.
3530 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3533 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3536 /* We have no other way to indicate error */
3542 *data = sc->s3.alpn_selected;
3546 *len = (unsigned int)sc->s3.alpn_selected_len;
3549 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3550 const char *label, size_t llen,
3551 const unsigned char *context, size_t contextlen,
3554 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3559 if (sc->session == NULL
3560 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3563 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3565 contextlen, use_context);
3568 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3569 const char *label, size_t llen,
3570 const unsigned char *context,
3573 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3578 if (sc->version != TLS1_3_VERSION)
3581 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3582 context, contextlen);
3585 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3587 const unsigned char *session_id = a->session_id;
3589 unsigned char tmp_storage[4];
3591 if (a->session_id_length < sizeof(tmp_storage)) {
3592 memset(tmp_storage, 0, sizeof(tmp_storage));
3593 memcpy(tmp_storage, a->session_id, a->session_id_length);
3594 session_id = tmp_storage;
3598 ((unsigned long)session_id[0]) |
3599 ((unsigned long)session_id[1] << 8L) |
3600 ((unsigned long)session_id[2] << 16L) |
3601 ((unsigned long)session_id[3] << 24L);
3606 * NB: If this function (or indeed the hash function which uses a sort of
3607 * coarser function than this one) is changed, ensure
3608 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3609 * being able to construct an SSL_SESSION that will collide with any existing
3610 * session with a matching session ID.
3612 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3614 if (a->ssl_version != b->ssl_version)
3616 if (a->session_id_length != b->session_id_length)
3618 return memcmp(a->session_id, b->session_id, a->session_id_length);
3622 * These wrapper functions should remain rather than redeclaring
3623 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3624 * variable. The reason is that the functions aren't static, they're exposed
3628 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3629 const SSL_METHOD *meth)
3631 SSL_CTX *ret = NULL;
3634 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3638 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3641 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3642 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3645 ret = OPENSSL_zalloc(sizeof(*ret));
3649 /* Init the reference counting before any call to SSL_CTX_free */
3650 ret->references = 1;
3651 ret->lock = CRYPTO_THREAD_lock_new();
3652 if (ret->lock == NULL) {
3653 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3658 #ifdef TSAN_REQUIRES_LOCKING
3659 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3660 if (ret->tsan_lock == NULL) {
3661 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3666 ret->libctx = libctx;
3667 if (propq != NULL) {
3668 ret->propq = OPENSSL_strdup(propq);
3669 if (ret->propq == NULL)
3674 ret->min_proto_version = 0;
3675 ret->max_proto_version = 0;
3676 ret->mode = SSL_MODE_AUTO_RETRY;
3677 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3678 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3679 /* We take the system default. */
3680 ret->session_timeout = meth->get_timeout();
3681 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3682 ret->verify_mode = SSL_VERIFY_NONE;
3683 if ((ret->cert = ssl_cert_new()) == NULL)
3686 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3687 if (ret->sessions == NULL)
3689 ret->cert_store = X509_STORE_new();
3690 if (ret->cert_store == NULL)
3692 #ifndef OPENSSL_NO_CT
3693 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3694 if (ret->ctlog_store == NULL)
3698 /* initialize cipher/digest methods table */
3699 if (!ssl_load_ciphers(ret))
3701 /* initialise sig algs */
3702 if (!ssl_setup_sig_algs(ret))
3706 if (!ssl_load_groups(ret))
3709 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3712 if (!ssl_create_cipher_list(ret,
3713 ret->tls13_ciphersuites,
3714 &ret->cipher_list, &ret->cipher_list_by_id,
3715 OSSL_default_cipher_list(), ret->cert)
3716 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3717 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3721 ret->param = X509_VERIFY_PARAM_new();
3722 if (ret->param == NULL)
3726 * If these aren't available from the provider we'll get NULL returns.
3727 * That's fine but will cause errors later if SSLv3 is negotiated
3729 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3730 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3732 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3735 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3738 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3741 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3744 /* No compression for DTLS */
3745 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3746 ret->comp_methods = SSL_COMP_get_compression_methods();
3748 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3749 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3751 /* Setup RFC5077 ticket keys */
3752 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3753 sizeof(ret->ext.tick_key_name), 0) <= 0)
3754 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3755 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3756 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3757 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3758 ret->options |= SSL_OP_NO_TICKET;
3760 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3761 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3764 #ifndef OPENSSL_NO_SRP
3765 if (!ssl_ctx_srp_ctx_init_intern(ret))
3768 #ifndef OPENSSL_NO_ENGINE
3769 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3770 # define eng_strx(x) #x
3771 # define eng_str(x) eng_strx(x)
3772 /* Use specific client engine automatically... ignore errors */
3775 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3778 ENGINE_load_builtin_engines();
3779 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3781 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3787 * Disable compression by default to prevent CRIME. Applications can
3788 * re-enable compression by configuring
3789 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3790 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3791 * middlebox compatibility by default. This may be disabled by default in
3792 * a later OpenSSL version.
3794 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3796 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3799 * We cannot usefully set a default max_early_data here (which gets
3800 * propagated in SSL_new(), for the following reason: setting the
3801 * SSL field causes tls_construct_stoc_early_data() to tell the
3802 * client that early data will be accepted when constructing a TLS 1.3
3803 * session ticket, and the client will accordingly send us early data
3804 * when using that ticket (if the client has early data to send).
3805 * However, in order for the early data to actually be consumed by
3806 * the application, the application must also have calls to
3807 * SSL_read_early_data(); otherwise we'll just skip past the early data
3808 * and ignore it. So, since the application must add calls to
3809 * SSL_read_early_data(), we also require them to add
3810 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3811 * eliminating the bandwidth-wasting early data in the case described
3814 ret->max_early_data = 0;
3817 * Default recv_max_early_data is a fully loaded single record. Could be
3818 * split across multiple records in practice. We set this differently to
3819 * max_early_data so that, in the default case, we do not advertise any
3820 * support for early_data, but if a client were to send us some (e.g.
3821 * because of an old, stale ticket) then we will tolerate it and skip over
3824 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3826 /* By default we send two session tickets automatically in TLSv1.3 */
3827 ret->num_tickets = 2;
3829 ssl_ctx_system_config(ret);
3833 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3839 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3841 return SSL_CTX_new_ex(NULL, NULL, meth);
3844 int SSL_CTX_up_ref(SSL_CTX *ctx)
3848 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3851 REF_PRINT_COUNT("SSL_CTX", ctx);
3852 REF_ASSERT_ISNT(i < 2);
3853 return ((i > 1) ? 1 : 0);
3856 void SSL_CTX_free(SSL_CTX *a)
3864 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3865 REF_PRINT_COUNT("SSL_CTX", a);
3868 REF_ASSERT_ISNT(i < 0);
3870 X509_VERIFY_PARAM_free(a->param);
3871 dane_ctx_final(&a->dane);
3874 * Free internal session cache. However: the remove_cb() may reference
3875 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3876 * after the sessions were flushed.
3877 * As the ex_data handling routines might also touch the session cache,
3878 * the most secure solution seems to be: empty (flush) the cache, then
3879 * free ex_data, then finally free the cache.
3880 * (See ticket [openssl.org #212].)
3882 if (a->sessions != NULL)
3883 SSL_CTX_flush_sessions(a, 0);
3885 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3886 lh_SSL_SESSION_free(a->sessions);
3887 X509_STORE_free(a->cert_store);
3888 #ifndef OPENSSL_NO_CT
3889 CTLOG_STORE_free(a->ctlog_store);
3891 sk_SSL_CIPHER_free(a->cipher_list);
3892 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3893 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3894 ssl_cert_free(a->cert);
3895 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3896 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3897 OSSL_STACK_OF_X509_free(a->extra_certs);
3898 a->comp_methods = NULL;
3899 #ifndef OPENSSL_NO_SRTP
3900 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3902 #ifndef OPENSSL_NO_SRP
3903 ssl_ctx_srp_ctx_free_intern(a);
3905 #ifndef OPENSSL_NO_ENGINE
3906 tls_engine_finish(a->client_cert_engine);
3909 OPENSSL_free(a->ext.ecpointformats);
3910 OPENSSL_free(a->ext.supportedgroups);
3911 OPENSSL_free(a->ext.supported_groups_default);
3912 OPENSSL_free(a->ext.alpn);
3913 OPENSSL_secure_free(a->ext.secure);
3915 ssl_evp_md_free(a->md5);
3916 ssl_evp_md_free(a->sha1);
3918 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3919 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3920 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3921 ssl_evp_md_free(a->ssl_digest_methods[j]);
3922 for (j = 0; j < a->group_list_len; j++) {
3923 OPENSSL_free(a->group_list[j].tlsname);
3924 OPENSSL_free(a->group_list[j].realname);
3925 OPENSSL_free(a->group_list[j].algorithm);
3927 OPENSSL_free(a->group_list);
3929 OPENSSL_free(a->sigalg_lookup_cache);
3931 CRYPTO_THREAD_lock_free(a->lock);
3932 #ifdef TSAN_REQUIRES_LOCKING
3933 CRYPTO_THREAD_lock_free(a->tsan_lock);
3936 OPENSSL_free(a->propq);
3941 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3943 ctx->default_passwd_callback = cb;
3946 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3948 ctx->default_passwd_callback_userdata = u;
3951 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3953 return ctx->default_passwd_callback;
3956 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3958 return ctx->default_passwd_callback_userdata;
3961 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3963 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3968 sc->default_passwd_callback = cb;
3971 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3973 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3978 sc->default_passwd_callback_userdata = u;
3981 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3983 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3988 return sc->default_passwd_callback;
3991 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3993 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3998 return sc->default_passwd_callback_userdata;
4001 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4002 int (*cb) (X509_STORE_CTX *, void *),
4005 ctx->app_verify_callback = cb;
4006 ctx->app_verify_arg = arg;
4009 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4010 int (*cb) (int, X509_STORE_CTX *))
4012 ctx->verify_mode = mode;
4013 ctx->default_verify_callback = cb;
4016 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4018 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4021 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4023 ssl_cert_set_cert_cb(c->cert, cb, arg);
4026 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4028 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4033 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4036 void ssl_set_masks(SSL_CONNECTION *s)
4039 uint32_t *pvalid = s->s3.tmp.valid_flags;
4040 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4041 unsigned long mask_k, mask_a;
4042 int have_ecc_cert, ecdsa_ok;
4047 dh_tmp = (c->dh_tmp != NULL
4048 || c->dh_tmp_cb != NULL
4051 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4052 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4053 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4054 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4058 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4059 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4061 #ifndef OPENSSL_NO_GOST
4062 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4063 mask_k |= SSL_kGOST | SSL_kGOST18;
4064 mask_a |= SSL_aGOST12;
4066 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4067 mask_k |= SSL_kGOST | SSL_kGOST18;
4068 mask_a |= SSL_aGOST12;
4070 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4071 mask_k |= SSL_kGOST;
4072 mask_a |= SSL_aGOST01;
4083 * If we only have an RSA-PSS certificate allow RSA authentication
4084 * if TLS 1.2 and peer supports it.
4087 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4088 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4089 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4096 mask_a |= SSL_aNULL;
4099 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4100 * depending on the key usage extension.
4102 if (have_ecc_cert) {
4104 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4105 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4106 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4109 mask_a |= SSL_aECDSA;
4111 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4112 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4113 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4114 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4115 mask_a |= SSL_aECDSA;
4117 /* Allow Ed448 for TLS 1.2 if peer supports it */
4118 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4119 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4120 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4121 mask_a |= SSL_aECDSA;
4123 mask_k |= SSL_kECDHE;
4125 #ifndef OPENSSL_NO_PSK
4128 if (mask_k & SSL_kRSA)
4129 mask_k |= SSL_kRSAPSK;
4130 if (mask_k & SSL_kDHE)
4131 mask_k |= SSL_kDHEPSK;
4132 if (mask_k & SSL_kECDHE)
4133 mask_k |= SSL_kECDHEPSK;
4136 s->s3.tmp.mask_k = mask_k;
4137 s->s3.tmp.mask_a = mask_a;
4140 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4142 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4143 /* key usage, if present, must allow signing */
4144 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4145 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4149 return 1; /* all checks are ok */
4152 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4153 const unsigned char **serverinfo,
4154 size_t *serverinfo_length)
4156 CERT_PKEY *cpk = s->s3.tmp.cert;
4157 *serverinfo_length = 0;
4159 if (cpk == NULL || cpk->serverinfo == NULL)
4162 *serverinfo = cpk->serverinfo;
4163 *serverinfo_length = cpk->serverinfo_length;
4167 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4172 * If the session_id_length is 0, we are not supposed to cache it, and it
4173 * would be rather hard to do anyway :-)
4175 if (s->session->session_id_length == 0)
4179 * If sid_ctx_length is 0 there is no specific application context
4180 * associated with this session, so when we try to resume it and
4181 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4182 * indication that this is actually a session for the proper application
4183 * context, and the *handshake* will fail, not just the resumption attempt.
4184 * Do not cache (on the server) these sessions that are not resumable
4185 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4187 if (s->server && s->session->sid_ctx_length == 0
4188 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4191 i = s->session_ctx->session_cache_mode;
4193 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4195 * Add the session to the internal cache. In server side TLSv1.3 we
4196 * normally don't do this because by default it's a full stateless ticket
4197 * with only a dummy session id so there is no reason to cache it,
4199 * - we are doing early_data, in which case we cache so that we can
4201 * - the application has set a remove_session_cb so needs to know about
4202 * session timeout events
4203 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4205 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4206 && (!SSL_CONNECTION_IS_TLS13(s)
4208 || (s->max_early_data > 0
4209 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4210 || s->session_ctx->remove_session_cb != NULL
4211 || (s->options & SSL_OP_NO_TICKET) != 0))
4212 SSL_CTX_add_session(s->session_ctx, s->session);
4215 * Add the session to the external cache. We do this even in server side
4216 * TLSv1.3 without early data because some applications just want to
4217 * know about the creation of a session and aren't doing a full cache.
4219 if (s->session_ctx->new_session_cb != NULL) {
4220 SSL_SESSION_up_ref(s->session);
4221 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4223 SSL_SESSION_free(s->session);
4227 /* auto flush every 255 connections */
4228 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4229 TSAN_QUALIFIER int *stat;
4231 if (mode & SSL_SESS_CACHE_CLIENT)
4232 stat = &s->session_ctx->stats.sess_connect_good;
4234 stat = &s->session_ctx->stats.sess_accept_good;
4235 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4236 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4240 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4245 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4250 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4253 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4255 /* TODO(QUIC): Do we want this for QUIC? */
4257 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4260 if (s->method != meth) {
4261 const SSL_METHOD *sm = s->method;
4262 int (*hf) (SSL *) = sc->handshake_func;
4264 if (sm->version == meth->version)
4269 ret = s->method->ssl_init(s);
4272 if (hf == sm->ssl_connect)
4273 sc->handshake_func = meth->ssl_connect;
4274 else if (hf == sm->ssl_accept)
4275 sc->handshake_func = meth->ssl_accept;
4280 int SSL_get_error(const SSL *s, int i)
4285 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4288 return SSL_ERROR_NONE;
4290 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4292 return SSL_ERROR_SSL;
4295 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4296 * where we do encode the error
4298 if ((l = ERR_peek_error()) != 0) {
4299 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4300 return SSL_ERROR_SYSCALL;
4302 return SSL_ERROR_SSL;
4305 if (SSL_want_read(s)) {
4306 bio = SSL_get_rbio(s);
4307 if (BIO_should_read(bio))
4308 return SSL_ERROR_WANT_READ;
4309 else if (BIO_should_write(bio))
4311 * This one doesn't make too much sense ... We never try to write
4312 * to the rbio, and an application program where rbio and wbio
4313 * are separate couldn't even know what it should wait for.
4314 * However if we ever set s->rwstate incorrectly (so that we have
4315 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4316 * wbio *are* the same, this test works around that bug; so it
4317 * might be safer to keep it.
4319 return SSL_ERROR_WANT_WRITE;
4320 else if (BIO_should_io_special(bio)) {
4321 reason = BIO_get_retry_reason(bio);
4322 if (reason == BIO_RR_CONNECT)
4323 return SSL_ERROR_WANT_CONNECT;
4324 else if (reason == BIO_RR_ACCEPT)
4325 return SSL_ERROR_WANT_ACCEPT;
4327 return SSL_ERROR_SYSCALL; /* unknown */
4331 if (SSL_want_write(s)) {
4332 /* Access wbio directly - in order to use the buffered bio if present */
4334 if (BIO_should_write(bio))
4335 return SSL_ERROR_WANT_WRITE;
4336 else if (BIO_should_read(bio))
4338 * See above (SSL_want_read(s) with BIO_should_write(bio))
4340 return SSL_ERROR_WANT_READ;
4341 else if (BIO_should_io_special(bio)) {
4342 reason = BIO_get_retry_reason(bio);
4343 if (reason == BIO_RR_CONNECT)
4344 return SSL_ERROR_WANT_CONNECT;
4345 else if (reason == BIO_RR_ACCEPT)
4346 return SSL_ERROR_WANT_ACCEPT;
4348 return SSL_ERROR_SYSCALL;
4351 if (SSL_want_x509_lookup(s))
4352 return SSL_ERROR_WANT_X509_LOOKUP;
4353 if (SSL_want_retry_verify(s))
4354 return SSL_ERROR_WANT_RETRY_VERIFY;
4355 if (SSL_want_async(s))
4356 return SSL_ERROR_WANT_ASYNC;
4357 if (SSL_want_async_job(s))
4358 return SSL_ERROR_WANT_ASYNC_JOB;
4359 if (SSL_want_client_hello_cb(s))
4360 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4362 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4363 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4364 return SSL_ERROR_ZERO_RETURN;
4366 return SSL_ERROR_SYSCALL;
4369 static int ssl_do_handshake_intern(void *vargs)
4371 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4373 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4378 return sc->handshake_func(s);
4381 int SSL_do_handshake(SSL *s)
4384 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4386 /* TODO(QUIC): Special handling for QUIC will be needed */
4390 if (sc->handshake_func == NULL) {
4391 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4395 ossl_statem_check_finish_init(sc, -1);
4397 s->method->ssl_renegotiate_check(s, 0);
4399 if (SSL_in_init(s) || SSL_in_before(s)) {
4400 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4401 struct ssl_async_args args;
4403 memset(&args, 0, sizeof(args));
4406 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4408 ret = sc->handshake_func(s);
4414 void SSL_set_accept_state(SSL *s)
4416 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4418 /* TODO(QUIC): Special handling for QUIC will be needed */
4424 ossl_statem_clear(sc);
4425 sc->handshake_func = s->method->ssl_accept;
4429 void SSL_set_connect_state(SSL *s)
4431 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4433 /* TODO(QUIC): Special handling for QUIC will be needed */
4439 ossl_statem_clear(sc);
4440 sc->handshake_func = s->method->ssl_connect;
4444 int ssl_undefined_function(SSL *s)
4446 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4450 int ssl_undefined_void_function(void)
4452 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4456 int ssl_undefined_const_function(const SSL *s)
4461 const SSL_METHOD *ssl_bad_method(int ver)
4463 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4467 const char *ssl_protocol_to_string(int version)
4471 case TLS1_3_VERSION:
4474 case TLS1_2_VERSION:
4477 case TLS1_1_VERSION:
4492 case DTLS1_2_VERSION:
4500 const char *SSL_get_version(const SSL *s)
4502 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4504 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4508 return ssl_protocol_to_string(sc->version);
4511 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4513 STACK_OF(X509_NAME) *sk;
4522 if ((sk = sk_X509_NAME_new_null()) == NULL)
4524 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4525 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4527 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4530 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4532 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4541 SSL *SSL_dup(SSL *s)
4545 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4546 SSL_CONNECTION *retsc;
4547 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4552 /* If we're not quiescent, just up_ref! */
4553 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4554 CRYPTO_UP_REF(&s->references, &i, s->lock);
4559 * Otherwise, copy configuration state, and session if set.
4561 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4563 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4566 if (sc->session != NULL) {
4568 * Arranges to share the same session via up_ref. This "copies"
4569 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4571 if (!SSL_copy_session_id(ret, s))
4575 * No session has been established yet, so we have to expect that
4576 * s->cert or ret->cert will be changed later -- they should not both
4577 * point to the same object, and thus we can't use
4578 * SSL_copy_session_id.
4580 if (!SSL_set_ssl_method(ret, s->method))
4583 if (sc->cert != NULL) {
4584 ssl_cert_free(retsc->cert);
4585 retsc->cert = ssl_cert_dup(sc->cert);
4586 if (retsc->cert == NULL)
4590 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4591 (int)sc->sid_ctx_length))
4595 if (!ssl_dane_dup(retsc, sc))
4597 retsc->version = sc->version;
4598 retsc->options = sc->options;
4599 retsc->min_proto_version = sc->min_proto_version;
4600 retsc->max_proto_version = sc->max_proto_version;
4601 retsc->mode = sc->mode;
4602 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4603 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4604 retsc->msg_callback = sc->msg_callback;
4605 retsc->msg_callback_arg = sc->msg_callback_arg;
4606 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4607 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4608 retsc->generate_session_id = sc->generate_session_id;
4610 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4612 /* copy app data, a little dangerous perhaps */
4613 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4616 retsc->server = sc->server;
4617 if (sc->handshake_func) {
4619 SSL_set_accept_state(ret);
4621 SSL_set_connect_state(ret);
4623 retsc->shutdown = sc->shutdown;
4624 retsc->hit = sc->hit;
4626 retsc->default_passwd_callback = sc->default_passwd_callback;
4627 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4629 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4631 /* dup the cipher_list and cipher_list_by_id stacks */
4632 if (sc->cipher_list != NULL) {
4633 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4636 if (sc->cipher_list_by_id != NULL)
4637 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4641 /* Dup the client_CA list */
4642 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4643 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4653 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4655 if (s->enc_read_ctx != NULL) {
4656 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4657 s->enc_read_ctx = NULL;
4659 if (s->enc_write_ctx != NULL) {
4660 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4661 s->enc_write_ctx = NULL;
4663 #ifndef OPENSSL_NO_COMP
4664 COMP_CTX_free(s->expand);
4666 COMP_CTX_free(s->compress);
4671 X509 *SSL_get_certificate(const SSL *s)
4673 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4678 if (sc->cert != NULL)
4679 return sc->cert->key->x509;
4684 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4686 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4691 if (sc->cert != NULL)
4692 return sc->cert->key->privatekey;
4697 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4699 if (ctx->cert != NULL)
4700 return ctx->cert->key->x509;
4705 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4707 if (ctx->cert != NULL)
4708 return ctx->cert->key->privatekey;
4713 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4715 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4720 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4721 return sc->session->cipher;
4725 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4727 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4732 return sc->s3.tmp.new_cipher;
4735 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4737 #ifndef OPENSSL_NO_COMP
4738 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4743 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4749 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4751 #ifndef OPENSSL_NO_COMP
4752 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4757 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4763 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4767 if (s->bbio != NULL) {
4768 /* Already buffered. */
4772 bbio = BIO_new(BIO_f_buffer());
4773 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4775 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4779 s->wbio = BIO_push(bbio, s->wbio);
4784 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4786 /* callers ensure s is never null */
4787 if (s->bbio == NULL)
4790 s->wbio = BIO_pop(s->wbio);
4797 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4799 ctx->quiet_shutdown = mode;
4802 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4804 return ctx->quiet_shutdown;
4807 void SSL_set_quiet_shutdown(SSL *s, int mode)
4809 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4811 /* TODO(QUIC): Do we want this for QUIC? */
4815 sc->quiet_shutdown = mode;
4818 int SSL_get_quiet_shutdown(const SSL *s)
4820 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4822 /* TODO(QUIC): Do we want this for QUIC? */
4826 return sc->quiet_shutdown;
4829 void SSL_set_shutdown(SSL *s, int mode)
4831 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4833 /* TODO(QUIC): Do we want this for QUIC? */
4837 sc->shutdown = mode;
4840 int SSL_get_shutdown(const SSL *s)
4842 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4844 /* TODO(QUIC): Do we want this for QUIC? */
4848 return sc->shutdown;
4851 int SSL_version(const SSL *s)
4853 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4855 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4862 int SSL_client_version(const SSL *s)
4864 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4866 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4870 return sc->client_version;
4873 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4878 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4881 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4883 /* TODO(QUIC): Do we need this for QUIC support? */
4887 if (ssl->ctx == ctx)
4890 ctx = sc->session_ctx;
4891 new_cert = ssl_cert_dup(ctx->cert);
4892 if (new_cert == NULL) {
4896 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4897 ssl_cert_free(new_cert);
4901 ssl_cert_free(sc->cert);
4902 sc->cert = new_cert;
4905 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4906 * so setter APIs must prevent invalid lengths from entering the system.
4908 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4912 * If the session ID context matches that of the parent SSL_CTX,
4913 * inherit it from the new SSL_CTX as well. If however the context does
4914 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4915 * leave it unchanged.
4917 if ((ssl->ctx != NULL) &&
4918 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4919 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4920 sc->sid_ctx_length = ctx->sid_ctx_length;
4921 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4924 SSL_CTX_up_ref(ctx);
4925 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4931 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4933 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4937 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4939 X509_LOOKUP *lookup;
4941 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4945 /* We ignore errors, in case the directory doesn't exist */
4948 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4955 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4957 X509_LOOKUP *lookup;
4959 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4963 /* We ignore errors, in case the file doesn't exist */
4966 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4974 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4976 X509_LOOKUP *lookup;
4978 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4982 /* We ignore errors, in case the directory doesn't exist */
4985 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4992 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4994 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4998 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5000 return X509_STORE_load_path(ctx->cert_store, CApath);
5003 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5005 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5009 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5012 if (CAfile == NULL && CApath == NULL)
5014 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5016 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5021 void SSL_set_info_callback(SSL *ssl,
5022 void (*cb) (const SSL *ssl, int type, int val))
5024 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5029 sc->info_callback = cb;
5033 * One compiler (Diab DCC) doesn't like argument names in returned function
5036 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5039 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5044 return sc->info_callback;
5047 void SSL_set_verify_result(SSL *ssl, long arg)
5049 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5054 sc->verify_result = arg;
5057 long SSL_get_verify_result(const SSL *ssl)
5059 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5064 return sc->verify_result;
5067 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5069 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5075 return sizeof(sc->s3.client_random);
5076 if (outlen > sizeof(sc->s3.client_random))
5077 outlen = sizeof(sc->s3.client_random);
5078 memcpy(out, sc->s3.client_random, outlen);
5082 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5084 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5090 return sizeof(sc->s3.server_random);
5091 if (outlen > sizeof(sc->s3.server_random))
5092 outlen = sizeof(sc->s3.server_random);
5093 memcpy(out, sc->s3.server_random, outlen);
5097 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5098 unsigned char *out, size_t outlen)
5101 return session->master_key_length;
5102 if (outlen > session->master_key_length)
5103 outlen = session->master_key_length;
5104 memcpy(out, session->master_key, outlen);
5108 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5111 if (len > sizeof(sess->master_key))
5114 memcpy(sess->master_key, in, len);
5115 sess->master_key_length = len;
5120 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5122 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5125 void *SSL_get_ex_data(const SSL *s, int idx)
5127 return CRYPTO_get_ex_data(&s->ex_data, idx);
5130 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5132 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5135 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5137 return CRYPTO_get_ex_data(&s->ex_data, idx);
5140 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5142 return ctx->cert_store;
5145 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5147 X509_STORE_free(ctx->cert_store);
5148 ctx->cert_store = store;
5151 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5154 X509_STORE_up_ref(store);
5155 SSL_CTX_set_cert_store(ctx, store);
5158 int SSL_want(const SSL *s)
5160 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5168 #ifndef OPENSSL_NO_PSK
5169 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5171 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5172 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5175 OPENSSL_free(ctx->cert->psk_identity_hint);
5176 if (identity_hint != NULL) {
5177 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5178 if (ctx->cert->psk_identity_hint == NULL)
5181 ctx->cert->psk_identity_hint = NULL;
5185 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5187 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5192 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5193 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5196 OPENSSL_free(sc->cert->psk_identity_hint);
5197 if (identity_hint != NULL) {
5198 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5199 if (sc->cert->psk_identity_hint == NULL)
5202 sc->cert->psk_identity_hint = NULL;
5206 const char *SSL_get_psk_identity_hint(const SSL *s)
5208 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5210 if (sc == NULL || sc->session == NULL)
5213 return sc->session->psk_identity_hint;
5216 const char *SSL_get_psk_identity(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;
5226 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5228 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5233 sc->psk_client_callback = cb;
5236 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5238 ctx->psk_client_callback = cb;
5241 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5243 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5248 sc->psk_server_callback = cb;
5251 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5253 ctx->psk_server_callback = cb;
5257 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5259 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5264 sc->psk_find_session_cb = cb;
5267 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5268 SSL_psk_find_session_cb_func cb)
5270 ctx->psk_find_session_cb = cb;
5273 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5275 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5280 sc->psk_use_session_cb = cb;
5283 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5284 SSL_psk_use_session_cb_func cb)
5286 ctx->psk_use_session_cb = cb;
5289 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5290 void (*cb) (int write_p, int version,
5291 int content_type, const void *buf,
5292 size_t len, SSL *ssl, void *arg))
5294 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5297 void SSL_set_msg_callback(SSL *ssl,
5298 void (*cb) (int write_p, int version,
5299 int content_type, const void *buf,
5300 size_t len, SSL *ssl, void *arg))
5302 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5305 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5306 int (*cb) (SSL *ssl,
5310 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5311 (void (*)(void))cb);
5314 void SSL_set_not_resumable_session_callback(SSL *ssl,
5315 int (*cb) (SSL *ssl,
5316 int is_forward_secure))
5318 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5319 (void (*)(void))cb);
5322 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5323 size_t (*cb) (SSL *ssl, int type,
5324 size_t len, void *arg))
5326 ctx->record_padding_cb = cb;
5329 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5331 ctx->record_padding_arg = arg;
5334 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5336 return ctx->record_padding_arg;
5339 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5341 /* block size of 0 or 1 is basically no padding */
5342 if (block_size == 1)
5343 ctx->block_padding = 0;
5344 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5345 ctx->block_padding = block_size;
5351 int SSL_set_record_padding_callback(SSL *ssl,
5352 size_t (*cb) (SSL *ssl, int type,
5353 size_t len, void *arg))
5356 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5361 b = SSL_get_wbio(ssl);
5362 if (b == NULL || !BIO_get_ktls_send(b)) {
5363 sc->record_padding_cb = cb;
5369 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5371 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5376 sc->record_padding_arg = arg;
5379 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5381 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5386 return sc->record_padding_arg;
5389 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5391 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5396 /* block size of 0 or 1 is basically no padding */
5397 if (block_size == 1)
5398 sc->block_padding = 0;
5399 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5400 sc->block_padding = block_size;
5406 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5408 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5413 sc->num_tickets = num_tickets;
5418 size_t SSL_get_num_tickets(const SSL *s)
5420 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5425 return sc->num_tickets;
5428 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5430 ctx->num_tickets = num_tickets;
5435 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5437 return ctx->num_tickets;
5441 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5442 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5443 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5444 * Returns the newly allocated ctx;
5447 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5449 ssl_clear_hash_ctx(hash);
5450 *hash = EVP_MD_CTX_new();
5451 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5452 EVP_MD_CTX_free(*hash);
5459 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5462 EVP_MD_CTX_free(*hash);
5466 /* Retrieve handshake hashes */
5467 int ssl_handshake_hash(SSL_CONNECTION *s,
5468 unsigned char *out, size_t outlen,
5471 EVP_MD_CTX *ctx = NULL;
5472 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5473 int hashleni = EVP_MD_CTX_get_size(hdgst);
5476 if (hashleni < 0 || (size_t)hashleni > outlen) {
5477 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5481 ctx = EVP_MD_CTX_new();
5483 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5487 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5488 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5489 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5493 *hashlen = hashleni;
5497 EVP_MD_CTX_free(ctx);
5501 int SSL_session_reused(const SSL *s)
5503 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5511 int SSL_is_server(const SSL *s)
5513 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5521 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5522 void SSL_set_debug(SSL *s, int debug)
5524 /* Old function was do-nothing anyway... */
5530 void SSL_set_security_level(SSL *s, int level)
5532 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5537 sc->cert->sec_level = level;
5540 int SSL_get_security_level(const SSL *s)
5542 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5547 return sc->cert->sec_level;
5550 void SSL_set_security_callback(SSL *s,
5551 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5552 int op, int bits, int nid,
5553 void *other, void *ex))
5555 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5560 sc->cert->sec_cb = cb;
5563 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5564 const SSL_CTX *ctx, int op,
5565 int bits, int nid, void *other,
5567 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5572 return sc->cert->sec_cb;
5575 void SSL_set0_security_ex_data(SSL *s, void *ex)
5577 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5582 sc->cert->sec_ex = ex;
5585 void *SSL_get0_security_ex_data(const SSL *s)
5587 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5592 return sc->cert->sec_ex;
5595 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5597 ctx->cert->sec_level = level;
5600 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5602 return ctx->cert->sec_level;
5605 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5606 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5607 int op, int bits, int nid,
5608 void *other, void *ex))
5610 ctx->cert->sec_cb = cb;
5613 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5619 return ctx->cert->sec_cb;
5622 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5624 ctx->cert->sec_ex = ex;
5627 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5629 return ctx->cert->sec_ex;
5632 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5634 return ctx->options;
5637 uint64_t SSL_get_options(const SSL *s)
5639 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5647 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5649 return ctx->options |= op;
5652 uint64_t SSL_set_options(SSL *s, uint64_t op)
5654 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5659 return sc->options |= op;
5662 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5664 return ctx->options &= ~op;
5667 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5669 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5674 return sc->options &= ~op;
5677 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5679 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5684 return sc->verified_chain;
5687 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5689 #ifndef OPENSSL_NO_CT
5692 * Moves SCTs from the |src| stack to the |dst| stack.
5693 * The source of each SCT will be set to |origin|.
5694 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5696 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5698 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5699 sct_source_t origin)
5705 *dst = sk_SCT_new_null();
5707 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5712 while ((sct = sk_SCT_pop(src)) != NULL) {
5713 if (SCT_set_source(sct, origin) != 1)
5716 if (sk_SCT_push(*dst, sct) <= 0)
5724 sk_SCT_push(src, sct); /* Put the SCT back */
5729 * Look for data collected during ServerHello and parse if found.
5730 * Returns the number of SCTs extracted.
5732 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5734 int scts_extracted = 0;
5736 if (s->ext.scts != NULL) {
5737 const unsigned char *p = s->ext.scts;
5738 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5740 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5742 SCT_LIST_free(scts);
5745 return scts_extracted;
5749 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5750 * contains an SCT X509 extension. They will be stored in |s->scts|.
5752 * - The number of SCTs extracted, assuming an OCSP response exists.
5753 * - 0 if no OCSP response exists or it contains no SCTs.
5754 * - A negative integer if an error occurs.
5756 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5758 # ifndef OPENSSL_NO_OCSP
5759 int scts_extracted = 0;
5760 const unsigned char *p;
5761 OCSP_BASICRESP *br = NULL;
5762 OCSP_RESPONSE *rsp = NULL;
5763 STACK_OF(SCT) *scts = NULL;
5766 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5769 p = s->ext.ocsp.resp;
5770 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5774 br = OCSP_response_get1_basic(rsp);
5778 for (i = 0; i < OCSP_resp_count(br); ++i) {
5779 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5785 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5787 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5788 if (scts_extracted < 0)
5792 SCT_LIST_free(scts);
5793 OCSP_BASICRESP_free(br);
5794 OCSP_RESPONSE_free(rsp);
5795 return scts_extracted;
5797 /* Behave as if no OCSP response exists */
5803 * Attempts to extract SCTs from the peer certificate.
5804 * Return the number of SCTs extracted, or a negative integer if an error
5807 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5809 int scts_extracted = 0;
5810 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5813 STACK_OF(SCT) *scts =
5814 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5817 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5819 SCT_LIST_free(scts);
5822 return scts_extracted;
5826 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5827 * response (if it exists) and X509v3 extensions in the certificate.
5828 * Returns NULL if an error occurs.
5830 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5832 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5837 if (!sc->scts_parsed) {
5838 if (ct_extract_tls_extension_scts(sc) < 0 ||
5839 ct_extract_ocsp_response_scts(sc) < 0 ||
5840 ct_extract_x509v3_extension_scts(sc) < 0)
5843 sc->scts_parsed = 1;
5850 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5851 const STACK_OF(SCT) *scts, void *unused_arg)
5856 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5857 const STACK_OF(SCT) *scts, void *unused_arg)
5859 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5862 for (i = 0; i < count; ++i) {
5863 SCT *sct = sk_SCT_value(scts, i);
5864 int status = SCT_get_validation_status(sct);
5866 if (status == SCT_VALIDATION_STATUS_VALID)
5869 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5873 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5876 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5882 * Since code exists that uses the custom extension handler for CT, look
5883 * for this and throw an error if they have already registered to use CT.
5885 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5886 TLSEXT_TYPE_signed_certificate_timestamp))
5888 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5892 if (callback != NULL) {
5894 * If we are validating CT, then we MUST accept SCTs served via OCSP
5896 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5900 sc->ct_validation_callback = callback;
5901 sc->ct_validation_callback_arg = arg;
5906 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5907 ssl_ct_validation_cb callback, void *arg)
5910 * Since code exists that uses the custom extension handler for CT, look for
5911 * this and throw an error if they have already registered to use CT.
5913 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5914 TLSEXT_TYPE_signed_certificate_timestamp))
5916 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5920 ctx->ct_validation_callback = callback;
5921 ctx->ct_validation_callback_arg = arg;
5925 int SSL_ct_is_enabled(const SSL *s)
5927 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5932 return sc->ct_validation_callback != NULL;
5935 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5937 return ctx->ct_validation_callback != NULL;
5940 int ssl_validate_ct(SSL_CONNECTION *s)
5943 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5945 SSL_DANE *dane = &s->dane;
5946 CT_POLICY_EVAL_CTX *ctx = NULL;
5947 const STACK_OF(SCT) *scts;
5950 * If no callback is set, the peer is anonymous, or its chain is invalid,
5951 * skip SCT validation - just return success. Applications that continue
5952 * handshakes without certificates, with unverified chains, or pinned leaf
5953 * certificates are outside the scope of the WebPKI and CT.
5955 * The above exclusions notwithstanding the vast majority of peers will
5956 * have rather ordinary certificate chains validated by typical
5957 * applications that perform certificate verification and therefore will
5958 * process SCTs when enabled.
5960 if (s->ct_validation_callback == NULL || cert == NULL ||
5961 s->verify_result != X509_V_OK ||
5962 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5966 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5967 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5969 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5970 switch (dane->mtlsa->usage) {
5971 case DANETLS_USAGE_DANE_TA:
5972 case DANETLS_USAGE_DANE_EE:
5977 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5978 SSL_CONNECTION_GET_CTX(s)->propq);
5980 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5984 issuer = sk_X509_value(s->verified_chain, 1);
5985 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5986 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5987 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
5988 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
5989 CT_POLICY_EVAL_CTX_set_time(
5990 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
5992 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
5995 * This function returns success (> 0) only when all the SCTs are valid, 0
5996 * when some are invalid, and < 0 on various internal errors (out of
5997 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5998 * reason to abort the handshake, that decision is up to the callback.
5999 * Therefore, we error out only in the unexpected case that the return
6000 * value is negative.
6002 * XXX: One might well argue that the return value of this function is an
6003 * unfortunate design choice. Its job is only to determine the validation
6004 * status of each of the provided SCTs. So long as it correctly separates
6005 * the wheat from the chaff it should return success. Failure in this case
6006 * ought to correspond to an inability to carry out its duties.
6008 if (SCT_LIST_validate(scts, ctx) < 0) {
6009 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6013 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6015 ret = 0; /* This function returns 0 on failure */
6017 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6020 CT_POLICY_EVAL_CTX_free(ctx);
6022 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6023 * failure return code here. Also the application may wish the complete
6024 * the handshake, and then disconnect cleanly at a higher layer, after
6025 * checking the verification status of the completed connection.
6027 * We therefore force a certificate verification failure which will be
6028 * visible via SSL_get_verify_result() and cached as part of any resumed
6031 * Note: the permissive callback is for information gathering only, always
6032 * returns success, and does not affect verification status. Only the
6033 * strict callback or a custom application-specified callback can trigger
6034 * connection failure or record a verification error.
6037 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6041 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6043 switch (validation_mode) {
6045 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6047 case SSL_CT_VALIDATION_PERMISSIVE:
6048 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6049 case SSL_CT_VALIDATION_STRICT:
6050 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6054 int SSL_enable_ct(SSL *s, int validation_mode)
6056 switch (validation_mode) {
6058 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6060 case SSL_CT_VALIDATION_PERMISSIVE:
6061 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6062 case SSL_CT_VALIDATION_STRICT:
6063 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6067 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6069 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6072 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6074 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6077 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6079 CTLOG_STORE_free(ctx->ctlog_store);
6080 ctx->ctlog_store = logs;
6083 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6085 return ctx->ctlog_store;
6088 #endif /* OPENSSL_NO_CT */
6090 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6093 c->client_hello_cb = cb;
6094 c->client_hello_cb_arg = arg;
6097 int SSL_client_hello_isv2(SSL *s)
6099 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6104 if (sc->clienthello == NULL)
6106 return sc->clienthello->isv2;
6109 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6111 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6116 if (sc->clienthello == NULL)
6118 return sc->clienthello->legacy_version;
6121 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6123 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6128 if (sc->clienthello == NULL)
6131 *out = sc->clienthello->random;
6132 return SSL3_RANDOM_SIZE;
6135 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6137 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6142 if (sc->clienthello == NULL)
6145 *out = sc->clienthello->session_id;
6146 return sc->clienthello->session_id_len;
6149 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6151 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6156 if (sc->clienthello == NULL)
6159 *out = PACKET_data(&sc->clienthello->ciphersuites);
6160 return PACKET_remaining(&sc->clienthello->ciphersuites);
6163 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6165 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6170 if (sc->clienthello == NULL)
6173 *out = sc->clienthello->compressions;
6174 return sc->clienthello->compressions_len;
6177 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6182 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6187 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6189 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6190 ext = sc->clienthello->pre_proc_exts + i;
6199 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6200 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6203 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6204 ext = sc->clienthello->pre_proc_exts + i;
6206 if (ext->received_order >= num)
6208 present[ext->received_order] = ext->type;
6215 OPENSSL_free(present);
6219 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6223 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6228 if (sc->clienthello == NULL || num_exts == NULL)
6230 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6231 ext = sc->clienthello->pre_proc_exts + i;
6243 if (*num_exts < num)
6245 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6246 ext = sc->clienthello->pre_proc_exts + i;
6248 if (ext->received_order >= num)
6250 exts[ext->received_order] = ext->type;
6257 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6262 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6267 if (sc->clienthello == NULL)
6269 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6270 r = sc->clienthello->pre_proc_exts + i;
6271 if (r->present && r->type == type) {
6273 *out = PACKET_data(&r->data);
6275 *outlen = PACKET_remaining(&r->data);
6282 int SSL_free_buffers(SSL *ssl)
6285 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6292 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6295 RECORD_LAYER_release(rl);
6299 int SSL_alloc_buffers(SSL *ssl)
6301 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6306 return ssl3_setup_buffers(sc);
6309 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6311 ctx->keylog_callback = cb;
6314 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6316 return ctx->keylog_callback;
6319 static int nss_keylog_int(const char *prefix,
6321 const uint8_t *parameter_1,
6322 size_t parameter_1_len,
6323 const uint8_t *parameter_2,
6324 size_t parameter_2_len)
6327 char *cursor = NULL;
6331 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6333 if (sctx->keylog_callback == NULL)
6337 * Our output buffer will contain the following strings, rendered with
6338 * space characters in between, terminated by a NULL character: first the
6339 * prefix, then the first parameter, then the second parameter. The
6340 * meaning of each parameter depends on the specific key material being
6341 * logged. Note that the first and second parameters are encoded in
6342 * hexadecimal, so we need a buffer that is twice their lengths.
6344 prefix_len = strlen(prefix);
6345 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6346 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6347 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6351 strcpy(cursor, prefix);
6352 cursor += prefix_len;
6355 for (i = 0; i < parameter_1_len; i++) {
6356 sprintf(cursor, "%02x", parameter_1[i]);
6361 for (i = 0; i < parameter_2_len; i++) {
6362 sprintf(cursor, "%02x", parameter_2[i]);
6367 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6368 OPENSSL_clear_free(out, out_len);
6373 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6374 const uint8_t *encrypted_premaster,
6375 size_t encrypted_premaster_len,
6376 const uint8_t *premaster,
6377 size_t premaster_len)
6379 if (encrypted_premaster_len < 8) {
6380 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6384 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6385 return nss_keylog_int("RSA",
6387 encrypted_premaster,
6393 int ssl_log_secret(SSL_CONNECTION *sc,
6395 const uint8_t *secret,
6398 return nss_keylog_int(label,
6400 sc->s3.client_random,
6406 #define SSLV2_CIPHER_LEN 3
6408 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6412 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6414 if (PACKET_remaining(cipher_suites) == 0) {
6415 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6419 if (PACKET_remaining(cipher_suites) % n != 0) {
6420 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6424 OPENSSL_free(s->s3.tmp.ciphers_raw);
6425 s->s3.tmp.ciphers_raw = NULL;
6426 s->s3.tmp.ciphers_rawlen = 0;
6429 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6430 PACKET sslv2ciphers = *cipher_suites;
6431 unsigned int leadbyte;
6435 * We store the raw ciphers list in SSLv3+ format so we need to do some
6436 * preprocessing to convert the list first. If there are any SSLv2 only
6437 * ciphersuites with a non-zero leading byte then we are going to
6438 * slightly over allocate because we won't store those. But that isn't a
6441 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6442 s->s3.tmp.ciphers_raw = raw;
6444 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6447 for (s->s3.tmp.ciphers_rawlen = 0;
6448 PACKET_remaining(&sslv2ciphers) > 0;
6449 raw += TLS_CIPHER_LEN) {
6450 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6452 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6455 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6456 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6457 OPENSSL_free(s->s3.tmp.ciphers_raw);
6458 s->s3.tmp.ciphers_raw = NULL;
6459 s->s3.tmp.ciphers_rawlen = 0;
6463 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6465 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6466 &s->s3.tmp.ciphers_rawlen)) {
6467 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6473 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6474 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6475 STACK_OF(SSL_CIPHER) **scsvs)
6478 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6483 if (!PACKET_buf_init(&pkt, bytes, len))
6485 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6488 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6489 STACK_OF(SSL_CIPHER) **skp,
6490 STACK_OF(SSL_CIPHER) **scsvs_out,
6491 int sslv2format, int fatal)
6493 const SSL_CIPHER *c;
6494 STACK_OF(SSL_CIPHER) *sk = NULL;
6495 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6497 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6498 unsigned char cipher[SSLV2_CIPHER_LEN];
6500 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6502 if (PACKET_remaining(cipher_suites) == 0) {
6504 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6506 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6510 if (PACKET_remaining(cipher_suites) % n != 0) {
6512 SSLfatal(s, SSL_AD_DECODE_ERROR,
6513 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6515 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6519 sk = sk_SSL_CIPHER_new_null();
6520 scsvs = sk_SSL_CIPHER_new_null();
6521 if (sk == NULL || scsvs == NULL) {
6523 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6525 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6529 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6531 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6532 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6533 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6535 if (sslv2format && cipher[0] != '\0')
6538 /* For SSLv2-compat, ignore leading 0-byte. */
6539 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6541 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6542 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6544 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6546 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6551 if (PACKET_remaining(cipher_suites) > 0) {
6553 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6555 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6562 sk_SSL_CIPHER_free(sk);
6563 if (scsvs_out != NULL)
6566 sk_SSL_CIPHER_free(scsvs);
6569 sk_SSL_CIPHER_free(sk);
6570 sk_SSL_CIPHER_free(scsvs);
6574 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6576 ctx->max_early_data = max_early_data;
6581 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6583 return ctx->max_early_data;
6586 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6588 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6593 sc->max_early_data = max_early_data;
6598 uint32_t SSL_get_max_early_data(const SSL *s)
6600 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6605 return sc->max_early_data;
6608 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6610 ctx->recv_max_early_data = recv_max_early_data;
6615 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6617 return ctx->recv_max_early_data;
6620 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6622 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6627 sc->recv_max_early_data = recv_max_early_data;
6632 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6634 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6639 return sc->recv_max_early_data;
6642 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6644 /* Return any active Max Fragment Len extension */
6645 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6646 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6648 /* return current SSL connection setting */
6649 return sc->max_send_fragment;
6652 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6654 /* Return a value regarding an active Max Fragment Len extension */
6655 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6656 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6657 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6659 /* else limit |split_send_fragment| to current |max_send_fragment| */
6660 if (sc->split_send_fragment > sc->max_send_fragment)
6661 return sc->max_send_fragment;
6663 /* return current SSL connection setting */
6664 return sc->split_send_fragment;
6667 int SSL_stateless(SSL *s)
6670 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6672 /* TODO(QUIC): This will need further work. */
6676 /* Ensure there is no state left over from a previous invocation */
6682 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6683 ret = SSL_accept(s);
6684 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6686 if (ret > 0 && sc->ext.cookieok)
6689 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6695 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6697 ctx->pha_enabled = val;
6700 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6702 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6707 sc->pha_enabled = val;
6710 int SSL_verify_client_post_handshake(SSL *ssl)
6712 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6717 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6718 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6722 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6726 if (!SSL_is_init_finished(ssl)) {
6727 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6731 switch (sc->post_handshake_auth) {
6733 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6736 case SSL_PHA_EXT_SENT:
6737 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6739 case SSL_PHA_EXT_RECEIVED:
6741 case SSL_PHA_REQUEST_PENDING:
6742 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6744 case SSL_PHA_REQUESTED:
6745 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6749 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6751 /* checks verify_mode and algorithm_auth */
6752 if (!send_certificate_request(sc)) {
6753 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6754 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6758 ossl_statem_set_in_init(sc, 1);
6762 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6763 SSL_CTX_generate_session_ticket_fn gen_cb,
6764 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6767 ctx->generate_ticket_cb = gen_cb;
6768 ctx->decrypt_ticket_cb = dec_cb;
6769 ctx->ticket_cb_data = arg;
6773 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6774 SSL_allow_early_data_cb_fn cb,
6777 ctx->allow_early_data_cb = cb;
6778 ctx->allow_early_data_cb_data = arg;
6781 void SSL_set_allow_early_data_cb(SSL *s,
6782 SSL_allow_early_data_cb_fn cb,
6785 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6790 sc->allow_early_data_cb = cb;
6791 sc->allow_early_data_cb_data = arg;
6794 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6796 const char *properties)
6798 const EVP_CIPHER *ciph;
6800 ciph = tls_get_cipher_from_engine(nid);
6805 * If there is no engine cipher then we do an explicit fetch. This may fail
6806 * and that could be ok
6809 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6815 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6817 /* Don't up-ref an implicit EVP_CIPHER */
6818 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6822 * The cipher was explicitly fetched and therefore it is safe to cast
6825 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6828 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6833 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6835 * The cipher was explicitly fetched and therefore it is safe to cast
6838 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6842 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6844 const char *properties)
6848 md = tls_get_digest_from_engine(nid);
6852 /* Otherwise we do an explicit fetch */
6854 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6859 int ssl_evp_md_up_ref(const EVP_MD *md)
6861 /* Don't up-ref an implicit EVP_MD */
6862 if (EVP_MD_get0_provider(md) == NULL)
6866 * The digest was explicitly fetched and therefore it is safe to cast
6869 return EVP_MD_up_ref((EVP_MD *)md);
6872 void ssl_evp_md_free(const EVP_MD *md)
6877 if (EVP_MD_get0_provider(md) != NULL) {
6879 * The digest was explicitly fetched and therefore it is safe to cast
6882 EVP_MD_free((EVP_MD *)md);
6886 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6888 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6893 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6894 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6895 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6898 EVP_PKEY_free(sc->cert->dh_tmp);
6899 sc->cert->dh_tmp = dhpkey;
6903 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6905 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6906 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6907 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6910 EVP_PKEY_free(ctx->cert->dh_tmp);
6911 ctx->cert->dh_tmp = dhpkey;