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 <openssl/core_names.h>
25 #include "internal/cryptlib.h"
26 #include "internal/nelem.h"
27 #include "internal/refcount.h"
28 #include "internal/ktls.h"
30 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
31 unsigned char *s, size_t t, size_t *u)
33 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
36 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
38 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
41 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
42 size_t s, unsigned char *t)
44 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
47 static int ssl_undefined_function_6(int r)
49 return ssl_undefined_function(NULL);
52 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
53 size_t s, const char *t, size_t u,
54 const unsigned char *v, size_t w, int x)
56 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
59 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
61 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
64 SSL3_ENC_METHOD ssl3_undef_enc_method = {
65 ssl_undefined_function_8,
66 ssl_undefined_function_3,
67 ssl_undefined_function_4,
68 ssl_undefined_function_5,
69 NULL, /* client_finished_label */
70 0, /* client_finished_label_len */
71 NULL, /* server_finished_label */
72 0, /* server_finished_label_len */
73 ssl_undefined_function_6,
74 ssl_undefined_function_7,
77 struct ssl_async_args {
81 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
83 int (*func_read) (SSL *, void *, size_t, size_t *);
84 int (*func_write) (SSL *, const void *, size_t, size_t *);
85 int (*func_other) (SSL *);
95 DANETLS_MATCHING_FULL, 0, NID_undef
98 DANETLS_MATCHING_2256, 1, NID_sha256
101 DANETLS_MATCHING_2512, 2, NID_sha512
105 static int dane_ctx_enable(struct dane_ctx_st *dctx)
107 const EVP_MD **mdevp;
109 uint8_t mdmax = DANETLS_MATCHING_LAST;
110 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
113 if (dctx->mdevp != NULL)
116 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
117 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
119 if (mdord == NULL || mdevp == NULL) {
125 /* Install default entries */
126 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
129 if (dane_mds[i].nid == NID_undef ||
130 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
132 mdevp[dane_mds[i].mtype] = md;
133 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
143 static void dane_ctx_final(struct dane_ctx_st *dctx)
145 OPENSSL_free(dctx->mdevp);
148 OPENSSL_free(dctx->mdord);
153 static void tlsa_free(danetls_record *t)
157 OPENSSL_free(t->data);
158 EVP_PKEY_free(t->spki);
162 static void dane_final(SSL_DANE *dane)
164 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
167 OSSL_STACK_OF_X509_free(dane->certs);
170 X509_free(dane->mcert);
178 * dane_copy - Copy dane configuration, sans verification state.
180 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
185 if (!DANETLS_ENABLED(&from->dane))
188 num = sk_danetls_record_num(from->dane.trecs);
189 dane_final(&to->dane);
190 to->dane.flags = from->dane.flags;
191 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
192 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
194 if (to->dane.trecs == NULL) {
195 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
199 for (i = 0; i < num; ++i) {
200 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
202 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
203 t->selector, t->mtype, t->data, t->dlen) <= 0)
209 static int dane_mtype_set(struct dane_ctx_st *dctx,
210 const EVP_MD *md, uint8_t mtype, uint8_t ord)
214 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
215 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
219 if (mtype > dctx->mdmax) {
220 const EVP_MD **mdevp;
222 int n = ((int)mtype) + 1;
224 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
229 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
234 /* Zero-fill any gaps */
235 for (i = dctx->mdmax + 1; i < mtype; ++i) {
243 dctx->mdevp[mtype] = md;
244 /* Coerce ordinal of disabled matching types to 0 */
245 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
250 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
252 if (mtype > dane->dctx->mdmax)
254 return dane->dctx->mdevp[mtype];
257 static int dane_tlsa_add(SSL_DANE *dane,
260 uint8_t mtype, const unsigned char *data, size_t dlen)
263 const EVP_MD *md = NULL;
264 int ilen = (int)dlen;
268 if (dane->trecs == NULL) {
269 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
273 if (ilen < 0 || dlen != (size_t)ilen) {
274 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
278 if (usage > DANETLS_USAGE_LAST) {
279 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
283 if (selector > DANETLS_SELECTOR_LAST) {
284 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
288 if (mtype != DANETLS_MATCHING_FULL) {
289 md = tlsa_md_get(dane, mtype);
291 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
296 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
297 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
301 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
305 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
309 t->selector = selector;
311 t->data = OPENSSL_malloc(dlen);
312 if (t->data == NULL) {
316 memcpy(t->data, data, dlen);
319 /* Validate and cache full certificate or public key */
320 if (mtype == DANETLS_MATCHING_FULL) {
321 const unsigned char *p = data;
323 EVP_PKEY *pkey = NULL;
326 case DANETLS_SELECTOR_CERT:
327 if (!d2i_X509(&cert, &p, ilen) || p < data ||
328 dlen != (size_t)(p - data)) {
330 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
333 if (X509_get0_pubkey(cert) == NULL) {
335 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
339 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
345 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
346 * records that contain full certificates of trust-anchors that are
347 * not present in the wire chain. For usage PKIX-TA(0), we augment
348 * the chain with untrusted Full(0) certificates from DNS, in case
349 * they are missing from the chain.
351 if ((dane->certs == NULL &&
352 (dane->certs = sk_X509_new_null()) == NULL) ||
353 !sk_X509_push(dane->certs, cert)) {
354 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
361 case DANETLS_SELECTOR_SPKI:
362 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
363 dlen != (size_t)(p - data)) {
365 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
370 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
371 * records that contain full bare keys of trust-anchors that are
372 * not present in the wire chain.
374 if (usage == DANETLS_USAGE_DANE_TA)
383 * Find the right insertion point for the new record.
385 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
386 * they can be processed first, as they require no chain building, and no
387 * expiration or hostname checks. Because DANE-EE(3) is numerically
388 * largest, this is accomplished via descending sort by "usage".
390 * We also sort in descending order by matching ordinal to simplify
391 * the implementation of digest agility in the verification code.
393 * The choice of order for the selector is not significant, so we
394 * use the same descending order for consistency.
396 num = sk_danetls_record_num(dane->trecs);
397 for (i = 0; i < num; ++i) {
398 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
400 if (rec->usage > usage)
402 if (rec->usage < usage)
404 if (rec->selector > selector)
406 if (rec->selector < selector)
408 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
413 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
415 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
418 dane->umask |= DANETLS_USAGE_BIT(usage);
424 * Return 0 if there is only one version configured and it was disabled
425 * at configure time. Return 1 otherwise.
427 static int ssl_check_allowed_versions(int min_version, int max_version)
429 int minisdtls = 0, maxisdtls = 0;
431 /* Figure out if we're doing DTLS versions or TLS versions */
432 if (min_version == DTLS1_BAD_VER
433 || min_version >> 8 == DTLS1_VERSION_MAJOR)
435 if (max_version == DTLS1_BAD_VER
436 || max_version >> 8 == DTLS1_VERSION_MAJOR)
438 /* A wildcard version of 0 could be DTLS or TLS. */
439 if ((minisdtls && !maxisdtls && max_version != 0)
440 || (maxisdtls && !minisdtls && min_version != 0)) {
441 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
445 if (minisdtls || maxisdtls) {
446 /* Do DTLS version checks. */
447 if (min_version == 0)
448 /* Ignore DTLS1_BAD_VER */
449 min_version = DTLS1_VERSION;
450 if (max_version == 0)
451 max_version = DTLS1_2_VERSION;
452 #ifdef OPENSSL_NO_DTLS1_2
453 if (max_version == DTLS1_2_VERSION)
454 max_version = DTLS1_VERSION;
456 #ifdef OPENSSL_NO_DTLS1
457 if (min_version == DTLS1_VERSION)
458 min_version = DTLS1_2_VERSION;
460 /* Done massaging versions; do the check. */
462 #ifdef OPENSSL_NO_DTLS1
463 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
464 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
466 #ifdef OPENSSL_NO_DTLS1_2
467 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
468 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
473 /* Regular TLS version checks. */
474 if (min_version == 0)
475 min_version = SSL3_VERSION;
476 if (max_version == 0)
477 max_version = TLS1_3_VERSION;
478 #ifdef OPENSSL_NO_TLS1_3
479 if (max_version == TLS1_3_VERSION)
480 max_version = TLS1_2_VERSION;
482 #ifdef OPENSSL_NO_TLS1_2
483 if (max_version == TLS1_2_VERSION)
484 max_version = TLS1_1_VERSION;
486 #ifdef OPENSSL_NO_TLS1_1
487 if (max_version == TLS1_1_VERSION)
488 max_version = TLS1_VERSION;
490 #ifdef OPENSSL_NO_TLS1
491 if (max_version == TLS1_VERSION)
492 max_version = SSL3_VERSION;
494 #ifdef OPENSSL_NO_SSL3
495 if (min_version == SSL3_VERSION)
496 min_version = TLS1_VERSION;
498 #ifdef OPENSSL_NO_TLS1
499 if (min_version == TLS1_VERSION)
500 min_version = TLS1_1_VERSION;
502 #ifdef OPENSSL_NO_TLS1_1
503 if (min_version == TLS1_1_VERSION)
504 min_version = TLS1_2_VERSION;
506 #ifdef OPENSSL_NO_TLS1_2
507 if (min_version == TLS1_2_VERSION)
508 min_version = TLS1_3_VERSION;
510 /* Done massaging versions; do the check. */
512 #ifdef OPENSSL_NO_SSL3
513 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
515 #ifdef OPENSSL_NO_TLS1
516 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
518 #ifdef OPENSSL_NO_TLS1_1
519 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
521 #ifdef OPENSSL_NO_TLS1_2
522 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
524 #ifdef OPENSSL_NO_TLS1_3
525 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
533 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
535 * Define a VPROC function for HP NonStop build ssl library.
536 * This is used by platform version identification tools.
537 * Do not inline this procedure or make it static.
539 # define OPENSSL_VPROC_STRING_(x) x##_SSL
540 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
541 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
542 void OPENSSL_VPROC_FUNC(void) {}
545 static int clear_record_layer(SSL_CONNECTION *s)
549 /* We try and reset both record layers even if one fails */
551 ret = ssl_set_new_record_layer(s,
552 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
554 OSSL_RECORD_DIRECTION_READ,
555 OSSL_RECORD_PROTECTION_LEVEL_NONE,
556 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
557 NID_undef, NULL, NULL);
559 ret &= ssl_set_new_record_layer(s,
560 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
562 OSSL_RECORD_DIRECTION_WRITE,
563 OSSL_RECORD_PROTECTION_LEVEL_NONE,
564 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
565 NID_undef, NULL, NULL);
566 /* SSLfatal already called in the event of failure */
570 int SSL_clear(SSL *s)
572 if (s->method == NULL) {
573 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
577 return s->method->ssl_reset(s);
580 int ossl_ssl_connection_reset(SSL *s)
582 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
587 if (ssl_clear_bad_session(sc)) {
588 SSL_SESSION_free(sc->session);
591 SSL_SESSION_free(sc->psksession);
592 sc->psksession = NULL;
593 OPENSSL_free(sc->psksession_id);
594 sc->psksession_id = NULL;
595 sc->psksession_id_len = 0;
596 sc->hello_retry_request = 0;
597 sc->sent_tickets = 0;
603 if (sc->renegotiate) {
604 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
608 ossl_statem_clear(sc);
610 /* TODO(QUIC): Version handling not yet clear */
611 sc->version = s->method->version;
612 sc->client_version = sc->version;
613 sc->rwstate = SSL_NOTHING;
615 BUF_MEM_free(sc->init_buf);
617 sc->first_packet = 0;
619 sc->key_update = SSL_KEY_UPDATE_NONE;
620 memset(sc->ext.compress_certificate_from_peer, 0,
621 sizeof(sc->ext.compress_certificate_from_peer));
622 sc->ext.compress_certificate_sent = 0;
624 EVP_MD_CTX_free(sc->pha_dgst);
627 /* Reset DANE verification result state */
630 X509_free(sc->dane.mcert);
631 sc->dane.mcert = NULL;
632 sc->dane.mtlsa = NULL;
634 /* Clear the verification result peername */
635 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
637 /* Clear any shared connection state */
638 OPENSSL_free(sc->shared_sigalgs);
639 sc->shared_sigalgs = NULL;
640 sc->shared_sigalgslen = 0;
643 * Check to see if we were changed into a different method, if so, revert
646 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
647 s->method->ssl_deinit(s);
648 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
649 if (!s->method->ssl_init(s))
652 if (!s->method->ssl_clear(s))
656 RECORD_LAYER_clear(&sc->rlayer);
657 BIO_free(sc->rlayer.rrlnext);
658 sc->rlayer.rrlnext = NULL;
660 if (!clear_record_layer(sc))
666 #ifndef OPENSSL_NO_DEPRECATED_3_0
667 /** Used to change an SSL_CTXs default SSL method type */
668 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
670 STACK_OF(SSL_CIPHER) *sk;
674 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
675 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
678 sk = ssl_create_cipher_list(ctx,
679 ctx->tls13_ciphersuites,
681 &(ctx->cipher_list_by_id),
682 OSSL_default_cipher_list(), ctx->cert);
683 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
684 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
691 SSL *SSL_new(SSL_CTX *ctx)
694 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
697 if (ctx->method == NULL) {
698 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
701 return ctx->method->ssl_new(ctx);
704 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
709 ssl->lock = CRYPTO_THREAD_lock_new();
710 if (ssl->lock == NULL)
716 ssl->method = ctx->method;
718 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
724 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
729 s = OPENSSL_zalloc(sizeof(*s));
734 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
740 #ifndef OPENSSL_NO_QUIC
741 /* set the parent (user visible) ssl to self */
745 RECORD_LAYER_init(&s->rlayer, s);
747 s->options = ctx->options;
748 s->dane.flags = ctx->dane.flags;
749 s->min_proto_version = ctx->min_proto_version;
750 s->max_proto_version = ctx->max_proto_version;
752 s->max_cert_list = ctx->max_cert_list;
753 s->max_early_data = ctx->max_early_data;
754 s->recv_max_early_data = ctx->recv_max_early_data;
755 s->num_tickets = ctx->num_tickets;
756 s->pha_enabled = ctx->pha_enabled;
758 /* Shallow copy of the ciphersuites stack */
759 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
760 if (s->tls13_ciphersuites == NULL)
764 * Earlier library versions used to copy the pointer to the CERT, not
765 * its contents; only when setting new parameters for the per-SSL
766 * copy, ssl_cert_new would be called (and the direct reference to
767 * the per-SSL_CTX settings would be lost, but those still were
768 * indirectly accessed for various purposes, and for that reason they
769 * used to be known as s->ctx->default_cert). Now we don't look at the
770 * SSL_CTX's CERT after having duplicated it once.
772 s->cert = ssl_cert_dup(ctx->cert);
776 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
777 s->msg_callback = ctx->msg_callback;
778 s->msg_callback_arg = ctx->msg_callback_arg;
779 s->verify_mode = ctx->verify_mode;
780 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
781 s->rlayer.record_padding_cb = ctx->record_padding_cb;
782 s->rlayer.record_padding_arg = ctx->record_padding_arg;
783 s->rlayer.block_padding = ctx->block_padding;
784 s->sid_ctx_length = ctx->sid_ctx_length;
785 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
787 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
788 s->verify_callback = ctx->default_verify_callback;
789 s->generate_session_id = ctx->generate_session_id;
791 s->param = X509_VERIFY_PARAM_new();
792 if (s->param == NULL)
794 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
795 s->quiet_shutdown = ctx->quiet_shutdown;
797 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
798 s->max_send_fragment = ctx->max_send_fragment;
799 s->split_send_fragment = ctx->split_send_fragment;
800 s->max_pipelines = ctx->max_pipelines;
801 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
804 s->ext.debug_arg = NULL;
805 s->ext.ticket_expected = 0;
806 s->ext.status_type = ctx->ext.status_type;
807 s->ext.status_expected = 0;
808 s->ext.ocsp.ids = NULL;
809 s->ext.ocsp.exts = NULL;
810 s->ext.ocsp.resp = NULL;
811 s->ext.ocsp.resp_len = 0;
813 s->session_ctx = ctx;
814 if (ctx->ext.ecpointformats) {
815 s->ext.ecpointformats =
816 OPENSSL_memdup(ctx->ext.ecpointformats,
817 ctx->ext.ecpointformats_len);
818 if (!s->ext.ecpointformats) {
819 s->ext.ecpointformats_len = 0;
822 s->ext.ecpointformats_len =
823 ctx->ext.ecpointformats_len;
825 if (ctx->ext.supportedgroups) {
826 s->ext.supportedgroups =
827 OPENSSL_memdup(ctx->ext.supportedgroups,
828 ctx->ext.supportedgroups_len
829 * sizeof(*ctx->ext.supportedgroups));
830 if (!s->ext.supportedgroups) {
831 s->ext.supportedgroups_len = 0;
834 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
837 #ifndef OPENSSL_NO_NEXTPROTONEG
841 if (ctx->ext.alpn != NULL) {
842 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
843 if (s->ext.alpn == NULL) {
847 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
848 s->ext.alpn_len = ctx->ext.alpn_len;
851 s->verified_chain = NULL;
852 s->verify_result = X509_V_OK;
854 s->default_passwd_callback = ctx->default_passwd_callback;
855 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
857 s->key_update = SSL_KEY_UPDATE_NONE;
859 s->allow_early_data_cb = ctx->allow_early_data_cb;
860 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
862 if (!ssl->method->ssl_init(ssl))
865 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
870 #ifndef OPENSSL_NO_PSK
871 s->psk_client_callback = ctx->psk_client_callback;
872 s->psk_server_callback = ctx->psk_server_callback;
874 s->psk_find_session_cb = ctx->psk_find_session_cb;
875 s->psk_use_session_cb = ctx->psk_use_session_cb;
877 s->async_cb = ctx->async_cb;
878 s->async_cb_arg = ctx->async_cb_arg;
882 #ifndef OPENSSL_NO_COMP_ALG
883 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
886 #ifndef OPENSSL_NO_CT
887 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
888 ctx->ct_validation_callback_arg))
894 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
897 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
900 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
906 int SSL_is_dtls(const SSL *s)
908 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
913 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
916 int SSL_up_ref(SSL *s)
920 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
923 REF_PRINT_COUNT("SSL", s);
924 REF_ASSERT_ISNT(i < 2);
925 return ((i > 1) ? 1 : 0);
928 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
929 unsigned int sid_ctx_len)
931 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
932 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
935 ctx->sid_ctx_length = sid_ctx_len;
936 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
941 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
942 unsigned int sid_ctx_len)
944 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
949 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
950 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
953 sc->sid_ctx_length = sid_ctx_len;
954 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
959 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
961 if (!CRYPTO_THREAD_write_lock(ctx->lock))
963 ctx->generate_session_id = cb;
964 CRYPTO_THREAD_unlock(ctx->lock);
968 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
970 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
972 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
974 sc->generate_session_id = cb;
975 CRYPTO_THREAD_unlock(ssl->lock);
979 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
983 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
984 * we can "construct" a session to give us the desired check - i.e. to
985 * find if there's a session in the hash table that would conflict with
986 * any new session built out of this id/id_len and the ssl_version in use
990 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
992 if (sc == NULL || id_len > sizeof(r.session_id))
995 r.ssl_version = sc->version;
996 r.session_id_length = id_len;
997 memcpy(r.session_id, id, id_len);
999 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1001 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1002 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1006 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1008 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1011 int SSL_set_purpose(SSL *s, int purpose)
1013 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1018 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1021 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1023 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1026 int SSL_set_trust(SSL *s, int trust)
1028 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1033 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1036 int SSL_set1_host(SSL *s, const char *hostname)
1038 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1043 /* If a hostname is provided and parses as an IP address,
1044 * treat it as such. */
1045 if (hostname != NULL
1046 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1049 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1052 int SSL_add1_host(SSL *s, const char *hostname)
1054 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1059 /* If a hostname is provided and parses as an IP address,
1060 * treat it as such. */
1063 ASN1_OCTET_STRING *ip;
1066 ip = a2i_IPADDRESS(hostname);
1068 /* We didn't want it; only to check if it *is* an IP address */
1069 ASN1_OCTET_STRING_free(ip);
1071 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1074 OPENSSL_free(old_ip);
1075 /* There can be only one IP address */
1079 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1083 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1086 void SSL_set_hostflags(SSL *s, unsigned int flags)
1088 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1093 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1096 const char *SSL_get0_peername(SSL *s)
1098 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1103 return X509_VERIFY_PARAM_get0_peername(sc->param);
1106 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1108 return dane_ctx_enable(&ctx->dane);
1111 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1113 unsigned long orig = ctx->dane.flags;
1115 ctx->dane.flags |= flags;
1119 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1121 unsigned long orig = ctx->dane.flags;
1123 ctx->dane.flags &= ~flags;
1127 int SSL_dane_enable(SSL *s, const char *basedomain)
1130 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1136 if (s->ctx->dane.mdmax == 0) {
1137 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1140 if (dane->trecs != NULL) {
1141 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1146 * Default SNI name. This rejects empty names, while set1_host below
1147 * accepts them and disables hostname checks. To avoid side-effects with
1148 * invalid input, set the SNI name first.
1150 if (sc->ext.hostname == NULL) {
1151 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1152 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1157 /* Primary RFC6125 reference identifier */
1158 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1159 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1165 dane->dctx = &s->ctx->dane;
1166 dane->trecs = sk_danetls_record_new_null();
1168 if (dane->trecs == NULL) {
1169 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1175 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1178 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1183 orig = sc->dane.flags;
1185 sc->dane.flags |= flags;
1189 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1192 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1197 orig = sc->dane.flags;
1199 sc->dane.flags &= ~flags;
1203 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1206 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1213 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1217 *mcert = dane->mcert;
1219 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1224 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1225 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1228 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1235 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1239 *usage = dane->mtlsa->usage;
1241 *selector = dane->mtlsa->selector;
1243 *mtype = dane->mtlsa->mtype;
1245 *data = dane->mtlsa->data;
1247 *dlen = dane->mtlsa->dlen;
1252 SSL_DANE *SSL_get0_dane(SSL *s)
1254 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1262 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1263 uint8_t mtype, const unsigned char *data, size_t dlen)
1265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1270 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1273 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1276 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1279 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1281 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1284 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1286 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1291 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1294 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1299 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1301 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1309 void SSL_certs_clear(SSL *s)
1311 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1316 ssl_cert_clear_certs(sc->cert);
1319 void SSL_free(SSL *s)
1325 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1326 REF_PRINT_COUNT("SSL", s);
1329 REF_ASSERT_ISNT(i < 0);
1331 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1333 if (s->method != NULL)
1334 s->method->ssl_free(s);
1336 SSL_CTX_free(s->ctx);
1337 CRYPTO_THREAD_lock_free(s->lock);
1342 void ossl_ssl_connection_free(SSL *ssl)
1346 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1350 X509_VERIFY_PARAM_free(s->param);
1351 dane_final(&s->dane);
1353 /* Ignore return value */
1354 ssl_free_wbio_buffer(s);
1356 RECORD_LAYER_clear(&s->rlayer);
1358 BUF_MEM_free(s->init_buf);
1360 /* add extra stuff */
1361 sk_SSL_CIPHER_free(s->cipher_list);
1362 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1363 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1364 sk_SSL_CIPHER_free(s->peer_ciphers);
1366 /* Make the next call work :-) */
1367 if (s->session != NULL) {
1368 ssl_clear_bad_session(s);
1369 SSL_SESSION_free(s->session);
1371 SSL_SESSION_free(s->psksession);
1372 OPENSSL_free(s->psksession_id);
1374 ssl_cert_free(s->cert);
1375 OPENSSL_free(s->shared_sigalgs);
1376 /* Free up if allocated */
1378 OPENSSL_free(s->ext.hostname);
1379 SSL_CTX_free(s->session_ctx);
1380 OPENSSL_free(s->ext.ecpointformats);
1381 OPENSSL_free(s->ext.peer_ecpointformats);
1382 OPENSSL_free(s->ext.supportedgroups);
1383 OPENSSL_free(s->ext.peer_supportedgroups);
1384 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1385 #ifndef OPENSSL_NO_OCSP
1386 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1388 #ifndef OPENSSL_NO_CT
1389 SCT_LIST_free(s->scts);
1390 OPENSSL_free(s->ext.scts);
1392 OPENSSL_free(s->ext.ocsp.resp);
1393 OPENSSL_free(s->ext.alpn);
1394 OPENSSL_free(s->ext.tls13_cookie);
1395 if (s->clienthello != NULL)
1396 OPENSSL_free(s->clienthello->pre_proc_exts);
1397 OPENSSL_free(s->clienthello);
1398 OPENSSL_free(s->pha_context);
1399 EVP_MD_CTX_free(s->pha_dgst);
1401 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1402 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1404 OSSL_STACK_OF_X509_free(s->verified_chain);
1406 if (ssl->method != NULL)
1407 ssl->method->ssl_deinit(ssl);
1409 ASYNC_WAIT_CTX_free(s->waitctx);
1411 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1412 OPENSSL_free(s->ext.npn);
1415 #ifndef OPENSSL_NO_SRTP
1416 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1420 * We do this late. We want to ensure that any other references we held to
1421 * these BIOs are freed first *before* we call BIO_free_all(), because
1422 * BIO_free_all() will only free each BIO in the chain if the number of
1423 * references to the first BIO have dropped to 0
1425 BIO_free_all(s->wbio);
1427 BIO_free_all(s->rbio);
1431 void SSL_set0_rbio(SSL *s, BIO *rbio)
1433 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1438 BIO_free_all(sc->rbio);
1440 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1443 void SSL_set0_wbio(SSL *s, BIO *wbio)
1445 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1451 * If the output buffering BIO is still in place, remove it
1453 if (sc->bbio != NULL)
1454 sc->wbio = BIO_pop(sc->wbio);
1456 BIO_free_all(sc->wbio);
1459 /* Re-attach |bbio| to the new |wbio|. */
1460 if (sc->bbio != NULL)
1461 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1463 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1466 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1469 * For historical reasons, this function has many different cases in
1470 * ownership handling.
1473 /* If nothing has changed, do nothing */
1474 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1478 * If the two arguments are equal then one fewer reference is granted by the
1479 * caller than we want to take
1481 if (rbio != NULL && rbio == wbio)
1485 * If only the wbio is changed only adopt one reference.
1487 if (rbio == SSL_get_rbio(s)) {
1488 SSL_set0_wbio(s, wbio);
1492 * There is an asymmetry here for historical reasons. If only the rbio is
1493 * changed AND the rbio and wbio were originally different, then we only
1494 * adopt one reference.
1496 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1497 SSL_set0_rbio(s, rbio);
1501 /* Otherwise, adopt both references. */
1502 SSL_set0_rbio(s, rbio);
1503 SSL_set0_wbio(s, wbio);
1506 BIO *SSL_get_rbio(const SSL *s)
1508 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1516 BIO *SSL_get_wbio(const SSL *s)
1518 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1523 if (sc->bbio != NULL) {
1525 * If |bbio| is active, the true caller-configured BIO is its
1528 return BIO_next(sc->bbio);
1533 int SSL_get_fd(const SSL *s)
1535 return SSL_get_rfd(s);
1538 int SSL_get_rfd(const SSL *s)
1543 b = SSL_get_rbio(s);
1544 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1546 BIO_get_fd(r, &ret);
1550 int SSL_get_wfd(const SSL *s)
1555 b = SSL_get_wbio(s);
1556 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1558 BIO_get_fd(r, &ret);
1562 #ifndef OPENSSL_NO_SOCK
1563 int SSL_set_fd(SSL *s, int fd)
1568 bio = BIO_new(BIO_s_socket());
1571 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1574 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1575 SSL_set_bio(s, bio, bio);
1576 #ifndef OPENSSL_NO_KTLS
1578 * The new socket is created successfully regardless of ktls_enable.
1579 * ktls_enable doesn't change any functionality of the socket, except
1580 * changing the setsockopt to enable the processing of ktls_start.
1581 * Thus, it is not a problem to call it for non-TLS sockets.
1584 #endif /* OPENSSL_NO_KTLS */
1590 int SSL_set_wfd(SSL *s, int fd)
1592 BIO *rbio = SSL_get_rbio(s);
1594 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1595 || (int)BIO_get_fd(rbio, NULL) != fd) {
1596 BIO *bio = BIO_new(BIO_s_socket());
1599 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1602 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1603 SSL_set0_wbio(s, bio);
1604 #ifndef OPENSSL_NO_KTLS
1606 * The new socket is created successfully regardless of ktls_enable.
1607 * ktls_enable doesn't change any functionality of the socket, except
1608 * changing the setsockopt to enable the processing of ktls_start.
1609 * Thus, it is not a problem to call it for non-TLS sockets.
1612 #endif /* OPENSSL_NO_KTLS */
1615 SSL_set0_wbio(s, rbio);
1620 int SSL_set_rfd(SSL *s, int fd)
1622 BIO *wbio = SSL_get_wbio(s);
1624 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1625 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1626 BIO *bio = BIO_new(BIO_s_socket());
1629 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1632 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1633 SSL_set0_rbio(s, bio);
1636 SSL_set0_rbio(s, wbio);
1643 /* return length of latest Finished message we sent, copy to 'buf' */
1644 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1647 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1652 ret = sc->s3.tmp.finish_md_len;
1655 memcpy(buf, sc->s3.tmp.finish_md, count);
1659 /* return length of latest Finished message we expected, copy to 'buf' */
1660 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1663 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1668 ret = sc->s3.tmp.peer_finish_md_len;
1671 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1675 int SSL_get_verify_mode(const SSL *s)
1677 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1682 return sc->verify_mode;
1685 int SSL_get_verify_depth(const SSL *s)
1687 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1692 return X509_VERIFY_PARAM_get_depth(sc->param);
1695 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1696 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1701 return sc->verify_callback;
1704 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1706 return ctx->verify_mode;
1709 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1711 return X509_VERIFY_PARAM_get_depth(ctx->param);
1714 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1715 return ctx->default_verify_callback;
1718 void SSL_set_verify(SSL *s, int mode,
1719 int (*callback) (int ok, X509_STORE_CTX *ctx))
1721 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1726 sc->verify_mode = mode;
1727 if (callback != NULL)
1728 sc->verify_callback = callback;
1731 void SSL_set_verify_depth(SSL *s, int depth)
1733 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1738 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1741 void SSL_set_read_ahead(SSL *s, int yes)
1743 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1744 OSSL_PARAM options[2], *opts = options;
1749 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1751 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1752 &sc->rlayer.read_ahead);
1753 *opts = OSSL_PARAM_construct_end();
1755 /* Ignore return value */
1756 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1759 int SSL_get_read_ahead(const SSL *s)
1761 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1766 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1769 int SSL_pending(const SSL *s)
1771 size_t pending = s->method->ssl_pending(s);
1774 * SSL_pending cannot work properly if read-ahead is enabled
1775 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1776 * impossible to fix since SSL_pending cannot report errors that may be
1777 * observed while scanning the new data. (Note that SSL_pending() is
1778 * often used as a boolean value, so we'd better not return -1.)
1780 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1781 * we just return INT_MAX.
1783 return pending < INT_MAX ? (int)pending : INT_MAX;
1786 int SSL_has_pending(const SSL *s)
1789 * Similar to SSL_pending() but returns a 1 to indicate that we have
1790 * processed or unprocessed data available or 0 otherwise (as opposed to the
1791 * number of bytes available). Unlike SSL_pending() this will take into
1792 * account read_ahead data. A 1 return simply indicates that we have data.
1793 * That data may not result in any application data, or we may fail to parse
1794 * the records for some reason.
1796 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1798 /* Check buffered app data if any first */
1799 if (SSL_CONNECTION_IS_DTLS(sc)) {
1803 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1804 while ((item = pqueue_next(&iter)) != NULL) {
1806 if (rdata->length > 0)
1811 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1814 return RECORD_LAYER_read_pending(&sc->rlayer);
1817 X509 *SSL_get1_peer_certificate(const SSL *s)
1819 X509 *r = SSL_get0_peer_certificate(s);
1827 X509 *SSL_get0_peer_certificate(const SSL *s)
1829 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1834 if (sc->session == NULL)
1837 return sc->session->peer;
1840 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1843 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1848 if (sc->session == NULL)
1851 r = sc->session->peer_chain;
1854 * If we are a client, cert_chain includes the peer's own certificate; if
1855 * we are a server, it does not.
1862 * Now in theory, since the calling process own 't' it should be safe to
1863 * modify. We need to be able to read f without being hassled
1865 int SSL_copy_session_id(SSL *t, const SSL *f)
1868 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1869 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1870 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1872 if (tsc == NULL || fsc == NULL)
1875 /* Do we need to do SSL locking? */
1876 if (!SSL_set_session(t, SSL_get_session(f))) {
1881 * what if we are setup for one protocol version but want to talk another
1883 if (t->method != f->method) {
1884 t->method->ssl_deinit(t);
1885 t->method = f->method;
1886 if (t->method->ssl_init(t) == 0)
1890 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1891 ssl_cert_free(tsc->cert);
1892 tsc->cert = fsc->cert;
1893 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1900 /* Fix this so it checks all the valid key/cert options */
1901 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1903 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1904 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1907 if (ctx->cert->key->privatekey == NULL) {
1908 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1911 return X509_check_private_key
1912 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1915 /* Fix this function so that it takes an optional type parameter */
1916 int SSL_check_private_key(const SSL *ssl)
1918 const SSL_CONNECTION *sc;
1920 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1921 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1924 if (sc->cert->key->x509 == NULL) {
1925 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1928 if (sc->cert->key->privatekey == NULL) {
1929 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1932 return X509_check_private_key(sc->cert->key->x509,
1933 sc->cert->key->privatekey);
1936 int SSL_waiting_for_async(SSL *s)
1938 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1949 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1951 ASYNC_WAIT_CTX *ctx;
1952 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1957 if ((ctx = sc->waitctx) == NULL)
1959 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1962 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1963 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1965 ASYNC_WAIT_CTX *ctx;
1966 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1971 if ((ctx = sc->waitctx) == NULL)
1973 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1977 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1979 ctx->async_cb = callback;
1983 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1985 ctx->async_cb_arg = arg;
1989 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1991 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1996 sc->async_cb = callback;
2000 int SSL_set_async_callback_arg(SSL *s, void *arg)
2002 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2007 sc->async_cb_arg = arg;
2011 int SSL_get_async_status(SSL *s, int *status)
2013 ASYNC_WAIT_CTX *ctx;
2014 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2019 if ((ctx = sc->waitctx) == NULL)
2021 *status = ASYNC_WAIT_CTX_get_status(ctx);
2025 int SSL_accept(SSL *s)
2027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2032 if (sc->handshake_func == NULL) {
2033 /* Not properly initialized yet */
2034 SSL_set_accept_state(s);
2037 return SSL_do_handshake(s);
2040 int SSL_connect(SSL *s)
2042 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2047 if (sc->handshake_func == NULL) {
2048 /* Not properly initialized yet */
2049 SSL_set_connect_state(s);
2052 return SSL_do_handshake(s);
2055 long SSL_get_default_timeout(const SSL *s)
2057 return (long int)ossl_time2seconds(s->method->get_timeout());
2060 static int ssl_async_wait_ctx_cb(void *arg)
2062 SSL *s = (SSL *)arg;
2063 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2068 return sc->async_cb(s, sc->async_cb_arg);
2071 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2072 int (*func) (void *))
2075 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2080 if (sc->waitctx == NULL) {
2081 sc->waitctx = ASYNC_WAIT_CTX_new();
2082 if (sc->waitctx == NULL)
2084 if (sc->async_cb != NULL
2085 && !ASYNC_WAIT_CTX_set_callback
2086 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2090 sc->rwstate = SSL_NOTHING;
2091 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2092 sizeof(struct ssl_async_args))) {
2094 sc->rwstate = SSL_NOTHING;
2095 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2098 sc->rwstate = SSL_ASYNC_PAUSED;
2101 sc->rwstate = SSL_ASYNC_NO_JOBS;
2107 sc->rwstate = SSL_NOTHING;
2108 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2109 /* Shouldn't happen */
2114 static int ssl_io_intern(void *vargs)
2116 struct ssl_async_args *args;
2122 args = (struct ssl_async_args *)vargs;
2126 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2129 switch (args->type) {
2131 return args->f.func_read(s, buf, num, &sc->asyncrw);
2133 return args->f.func_write(s, buf, num, &sc->asyncrw);
2135 return args->f.func_other(s);
2140 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2142 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2147 if (sc->handshake_func == NULL) {
2148 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2152 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2153 sc->rwstate = SSL_NOTHING;
2157 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2158 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2159 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2163 * If we are a client and haven't received the ServerHello etc then we
2166 ossl_statem_check_finish_init(sc, 0);
2168 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2169 struct ssl_async_args args;
2175 args.type = READFUNC;
2176 args.f.func_read = s->method->ssl_read;
2178 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2179 *readbytes = sc->asyncrw;
2182 return s->method->ssl_read(s, buf, num, readbytes);
2186 int SSL_read(SSL *s, void *buf, int num)
2192 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2196 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2199 * The cast is safe here because ret should be <= INT_MAX because num is
2203 ret = (int)readbytes;
2208 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2210 int ret = ssl_read_internal(s, buf, num, readbytes);
2217 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2220 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2222 /* TODO(QUIC): This will need special handling for QUIC */
2227 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2228 return SSL_READ_EARLY_DATA_ERROR;
2231 switch (sc->early_data_state) {
2232 case SSL_EARLY_DATA_NONE:
2233 if (!SSL_in_before(s)) {
2234 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2235 return SSL_READ_EARLY_DATA_ERROR;
2239 case SSL_EARLY_DATA_ACCEPT_RETRY:
2240 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2241 ret = SSL_accept(s);
2244 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2245 return SSL_READ_EARLY_DATA_ERROR;
2249 case SSL_EARLY_DATA_READ_RETRY:
2250 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2251 sc->early_data_state = SSL_EARLY_DATA_READING;
2252 ret = SSL_read_ex(s, buf, num, readbytes);
2254 * State machine will update early_data_state to
2255 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2258 if (ret > 0 || (ret <= 0 && sc->early_data_state
2259 != SSL_EARLY_DATA_FINISHED_READING)) {
2260 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2261 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2262 : SSL_READ_EARLY_DATA_ERROR;
2265 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2268 return SSL_READ_EARLY_DATA_FINISH;
2271 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2272 return SSL_READ_EARLY_DATA_ERROR;
2276 int SSL_get_early_data_status(const SSL *s)
2278 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2280 /* TODO(QUIC): This will need special handling for QUIC */
2284 return sc->ext.early_data;
2287 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2289 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2294 if (sc->handshake_func == NULL) {
2295 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2299 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2302 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2303 struct ssl_async_args args;
2309 args.type = READFUNC;
2310 args.f.func_read = s->method->ssl_peek;
2312 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2313 *readbytes = sc->asyncrw;
2316 return s->method->ssl_peek(s, buf, num, readbytes);
2320 int SSL_peek(SSL *s, void *buf, int num)
2326 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2330 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2333 * The cast is safe here because ret should be <= INT_MAX because num is
2337 ret = (int)readbytes;
2343 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2345 int ret = ssl_peek_internal(s, buf, num, readbytes);
2352 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2354 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2359 if (sc->handshake_func == NULL) {
2360 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2364 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2365 sc->rwstate = SSL_NOTHING;
2366 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2370 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2371 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2372 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2373 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2376 /* If we are a client and haven't sent the Finished we better do that */
2377 ossl_statem_check_finish_init(sc, 1);
2379 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2381 struct ssl_async_args args;
2384 args.buf = (void *)buf;
2386 args.type = WRITEFUNC;
2387 args.f.func_write = s->method->ssl_write;
2389 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2390 *written = sc->asyncrw;
2393 return s->method->ssl_write(s, buf, num, written);
2397 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2400 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2405 if (sc->handshake_func == NULL) {
2406 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2410 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2411 sc->rwstate = SSL_NOTHING;
2412 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2416 if (!BIO_get_ktls_send(sc->wbio)) {
2417 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2421 /* If we have an alert to send, lets send it */
2422 if (sc->s3.alert_dispatch > 0) {
2423 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2425 /* SSLfatal() already called if appropriate */
2428 /* if it went, fall through and send more stuff */
2431 sc->rwstate = SSL_WRITING;
2432 if (BIO_flush(sc->wbio) <= 0) {
2433 if (!BIO_should_retry(sc->wbio)) {
2434 sc->rwstate = SSL_NOTHING;
2437 set_sys_error(EAGAIN);
2443 #ifdef OPENSSL_NO_KTLS
2444 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2445 "can't call ktls_sendfile(), ktls disabled");
2448 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2450 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2451 if ((get_last_sys_error() == EAGAIN) ||
2452 (get_last_sys_error() == EINTR) ||
2453 (get_last_sys_error() == EBUSY))
2454 BIO_set_retry_write(sc->wbio);
2457 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2460 sc->rwstate = SSL_NOTHING;
2465 int SSL_write(SSL *s, const void *buf, int num)
2471 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2475 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2478 * The cast is safe here because ret should be <= INT_MAX because num is
2487 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2489 int ret = ssl_write_internal(s, buf, num, written);
2496 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2498 int ret, early_data_state;
2500 uint32_t partialwrite;
2501 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2503 /* TODO(QUIC): This will need special handling for QUIC */
2507 switch (sc->early_data_state) {
2508 case SSL_EARLY_DATA_NONE:
2510 || !SSL_in_before(s)
2511 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2512 && (sc->psk_use_session_cb == NULL))) {
2513 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2518 case SSL_EARLY_DATA_CONNECT_RETRY:
2519 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2520 ret = SSL_connect(s);
2523 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2528 case SSL_EARLY_DATA_WRITE_RETRY:
2529 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2531 * We disable partial write for early data because we don't keep track
2532 * of how many bytes we've written between the SSL_write_ex() call and
2533 * the flush if the flush needs to be retried)
2535 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2536 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2537 ret = SSL_write_ex(s, buf, num, &writtmp);
2538 sc->mode |= partialwrite;
2540 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2543 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2546 case SSL_EARLY_DATA_WRITE_FLUSH:
2547 /* The buffering BIO is still in place so we need to flush it */
2548 if (statem_flush(sc) != 1)
2551 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2554 case SSL_EARLY_DATA_FINISHED_READING:
2555 case SSL_EARLY_DATA_READ_RETRY:
2556 early_data_state = sc->early_data_state;
2557 /* We are a server writing to an unauthenticated client */
2558 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2559 ret = SSL_write_ex(s, buf, num, written);
2560 /* The buffering BIO is still in place */
2562 (void)BIO_flush(sc->wbio);
2563 sc->early_data_state = early_data_state;
2567 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2572 int SSL_shutdown(SSL *s)
2575 * Note that this function behaves differently from what one might
2576 * expect. Return values are 0 for no success (yet), 1 for success; but
2577 * calling it once is usually not enough, even if blocking I/O is used
2578 * (see ssl3_shutdown).
2580 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2585 if (sc->handshake_func == NULL) {
2586 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2590 if (!SSL_in_init(s)) {
2591 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2592 struct ssl_async_args args;
2594 memset(&args, 0, sizeof(args));
2596 args.type = OTHERFUNC;
2597 args.f.func_other = s->method->ssl_shutdown;
2599 return ssl_start_async_job(s, &args, ssl_io_intern);
2601 return s->method->ssl_shutdown(s);
2604 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2609 int SSL_key_update(SSL *s, int updatetype)
2611 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2616 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2617 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2621 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2622 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2623 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2627 if (!SSL_is_init_finished(s)) {
2628 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2632 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2633 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2637 ossl_statem_set_in_init(sc, 1);
2638 sc->key_update = updatetype;
2642 int SSL_get_key_update_type(const SSL *s)
2644 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2649 return sc->key_update;
2653 * Can we accept a renegotiation request? If yes, set the flag and
2654 * return 1 if yes. If not, raise error and return 0.
2656 static int can_renegotiate(const SSL_CONNECTION *sc)
2658 if (SSL_CONNECTION_IS_TLS13(sc)) {
2659 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2663 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2664 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2671 int SSL_renegotiate(SSL *s)
2673 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2678 if (!can_renegotiate(sc))
2681 sc->renegotiate = 1;
2682 sc->new_session = 1;
2683 return s->method->ssl_renegotiate(s);
2686 int SSL_renegotiate_abbreviated(SSL *s)
2688 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2693 if (!can_renegotiate(sc))
2696 sc->renegotiate = 1;
2697 sc->new_session = 0;
2698 return s->method->ssl_renegotiate(s);
2701 int SSL_renegotiate_pending(const SSL *s)
2703 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2709 * becomes true when negotiation is requested; false again once a
2710 * handshake has finished
2712 return (sc->renegotiate != 0);
2715 int SSL_new_session_ticket(SSL *s)
2717 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2722 /* If we are in init because we're sending tickets, okay to send more. */
2723 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2724 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2725 || !SSL_CONNECTION_IS_TLS13(sc))
2727 sc->ext.extra_tickets_expected++;
2728 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2729 ossl_statem_set_in_init(sc, 1);
2733 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2736 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2738 /* TODO(QUIC): Special handling for some ctrls will be needed */
2743 case SSL_CTRL_GET_READ_AHEAD:
2744 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2745 case SSL_CTRL_SET_READ_AHEAD:
2746 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2747 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2750 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2751 sc->msg_callback_arg = parg;
2756 OSSL_PARAM options[2], *opts = options;
2760 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2762 *opts = OSSL_PARAM_construct_end();
2764 /* Ignore return value */
2765 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2769 case SSL_CTRL_CLEAR_MODE:
2770 return (sc->mode &= ~larg);
2771 case SSL_CTRL_GET_MAX_CERT_LIST:
2772 return (long)sc->max_cert_list;
2773 case SSL_CTRL_SET_MAX_CERT_LIST:
2776 l = (long)sc->max_cert_list;
2777 sc->max_cert_list = (size_t)larg;
2779 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2780 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2782 #ifndef OPENSSL_NO_KTLS
2783 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2785 #endif /* OPENSSL_NO_KTLS */
2786 sc->max_send_fragment = larg;
2787 if (sc->max_send_fragment < sc->split_send_fragment)
2788 sc->split_send_fragment = sc->max_send_fragment;
2789 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2791 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2792 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2794 sc->split_send_fragment = larg;
2796 case SSL_CTRL_SET_MAX_PIPELINES:
2797 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2799 sc->max_pipelines = larg;
2800 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2801 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2803 case SSL_CTRL_GET_RI_SUPPORT:
2804 return sc->s3.send_connection_binding;
2805 case SSL_CTRL_SET_RETRY_VERIFY:
2806 sc->rwstate = SSL_RETRY_VERIFY;
2808 case SSL_CTRL_CERT_FLAGS:
2809 return (sc->cert->cert_flags |= larg);
2810 case SSL_CTRL_CLEAR_CERT_FLAGS:
2811 return (sc->cert->cert_flags &= ~larg);
2813 case SSL_CTRL_GET_RAW_CIPHERLIST:
2815 if (sc->s3.tmp.ciphers_raw == NULL)
2817 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2818 return (int)sc->s3.tmp.ciphers_rawlen;
2820 return TLS_CIPHER_LEN;
2822 case SSL_CTRL_GET_EXTMS_SUPPORT:
2823 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2825 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2829 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2830 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2831 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2832 &sc->min_proto_version);
2833 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2834 return sc->min_proto_version;
2835 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2836 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2837 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2838 &sc->max_proto_version);
2839 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2840 return sc->max_proto_version;
2842 return s->method->ssl_ctrl(s, cmd, larg, parg);
2846 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2848 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2854 case SSL_CTRL_SET_MSG_CALLBACK:
2855 sc->msg_callback = (void (*)
2856 (int write_p, int version, int content_type,
2857 const void *buf, size_t len, SSL *ssl,
2862 return s->method->ssl_callback_ctrl(s, cmd, fp);
2866 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2868 return ctx->sessions;
2871 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2875 if (ssl_tsan_lock(ctx)) {
2876 res = tsan_load(stat);
2877 ssl_tsan_unlock(ctx);
2882 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2885 /* For some cases with ctx == NULL perform syntax checks */
2888 case SSL_CTRL_SET_GROUPS_LIST:
2889 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2890 case SSL_CTRL_SET_SIGALGS_LIST:
2891 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2892 return tls1_set_sigalgs_list(NULL, parg, 0);
2899 case SSL_CTRL_GET_READ_AHEAD:
2900 return ctx->read_ahead;
2901 case SSL_CTRL_SET_READ_AHEAD:
2902 l = ctx->read_ahead;
2903 ctx->read_ahead = larg;
2906 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2907 ctx->msg_callback_arg = parg;
2910 case SSL_CTRL_GET_MAX_CERT_LIST:
2911 return (long)ctx->max_cert_list;
2912 case SSL_CTRL_SET_MAX_CERT_LIST:
2915 l = (long)ctx->max_cert_list;
2916 ctx->max_cert_list = (size_t)larg;
2919 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2922 l = (long)ctx->session_cache_size;
2923 ctx->session_cache_size = (size_t)larg;
2925 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2926 return (long)ctx->session_cache_size;
2927 case SSL_CTRL_SET_SESS_CACHE_MODE:
2928 l = ctx->session_cache_mode;
2929 ctx->session_cache_mode = larg;
2931 case SSL_CTRL_GET_SESS_CACHE_MODE:
2932 return ctx->session_cache_mode;
2934 case SSL_CTRL_SESS_NUMBER:
2935 return lh_SSL_SESSION_num_items(ctx->sessions);
2936 case SSL_CTRL_SESS_CONNECT:
2937 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2938 case SSL_CTRL_SESS_CONNECT_GOOD:
2939 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2940 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2941 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2942 case SSL_CTRL_SESS_ACCEPT:
2943 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2944 case SSL_CTRL_SESS_ACCEPT_GOOD:
2945 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2946 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2947 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2948 case SSL_CTRL_SESS_HIT:
2949 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2950 case SSL_CTRL_SESS_CB_HIT:
2951 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2952 case SSL_CTRL_SESS_MISSES:
2953 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2954 case SSL_CTRL_SESS_TIMEOUTS:
2955 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2956 case SSL_CTRL_SESS_CACHE_FULL:
2957 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2959 return (ctx->mode |= larg);
2960 case SSL_CTRL_CLEAR_MODE:
2961 return (ctx->mode &= ~larg);
2962 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2963 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2965 ctx->max_send_fragment = larg;
2966 if (ctx->max_send_fragment < ctx->split_send_fragment)
2967 ctx->split_send_fragment = ctx->max_send_fragment;
2969 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2970 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2972 ctx->split_send_fragment = larg;
2974 case SSL_CTRL_SET_MAX_PIPELINES:
2975 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2977 ctx->max_pipelines = larg;
2979 case SSL_CTRL_CERT_FLAGS:
2980 return (ctx->cert->cert_flags |= larg);
2981 case SSL_CTRL_CLEAR_CERT_FLAGS:
2982 return (ctx->cert->cert_flags &= ~larg);
2983 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2984 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2985 && ssl_set_version_bound(ctx->method->version, (int)larg,
2986 &ctx->min_proto_version);
2987 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2988 return ctx->min_proto_version;
2989 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2990 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2991 && ssl_set_version_bound(ctx->method->version, (int)larg,
2992 &ctx->max_proto_version);
2993 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2994 return ctx->max_proto_version;
2996 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3000 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3003 case SSL_CTRL_SET_MSG_CALLBACK:
3004 ctx->msg_callback = (void (*)
3005 (int write_p, int version, int content_type,
3006 const void *buf, size_t len, SSL *ssl,
3011 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3015 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3024 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3025 const SSL_CIPHER *const *bp)
3027 if ((*ap)->id > (*bp)->id)
3029 if ((*ap)->id < (*bp)->id)
3035 * return a STACK of the ciphers available for the SSL and in order of
3038 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3040 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3043 if (sc->cipher_list != NULL) {
3044 return sc->cipher_list;
3045 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3046 return s->ctx->cipher_list;
3052 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3054 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3056 if (sc == NULL || !sc->server)
3058 return sc->peer_ciphers;
3061 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3063 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3065 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3070 ciphers = SSL_get_ciphers(s);
3073 if (!ssl_set_client_disabled(sc))
3075 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3076 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3077 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3079 sk = sk_SSL_CIPHER_new_null();
3082 if (!sk_SSL_CIPHER_push(sk, c)) {
3083 sk_SSL_CIPHER_free(sk);
3091 /** return a STACK of the ciphers available for the SSL and in order of
3093 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3096 if (s->cipher_list_by_id != NULL)
3097 return s->cipher_list_by_id;
3098 else if (s->ssl.ctx != NULL
3099 && s->ssl.ctx->cipher_list_by_id != NULL)
3100 return s->ssl.ctx->cipher_list_by_id;
3105 /** The old interface to get the same thing as SSL_get_ciphers() */
3106 const char *SSL_get_cipher_list(const SSL *s, int n)
3108 const SSL_CIPHER *c;
3109 STACK_OF(SSL_CIPHER) *sk;
3113 sk = SSL_get_ciphers(s);
3114 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3116 c = sk_SSL_CIPHER_value(sk, n);
3122 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3124 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3127 return ctx->cipher_list;
3132 * Distinguish between ciphers controlled by set_ciphersuite() and
3133 * set_cipher_list() when counting.
3135 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3138 const SSL_CIPHER *c;
3142 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3143 c = sk_SSL_CIPHER_value(sk, i);
3144 if (c->min_tls >= TLS1_3_VERSION)
3151 /** specify the ciphers to be used by default by the SSL_CTX */
3152 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3154 STACK_OF(SSL_CIPHER) *sk;
3156 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3157 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3160 * ssl_create_cipher_list may return an empty stack if it was unable to
3161 * find a cipher matching the given rule string (for example if the rule
3162 * string specifies a cipher which has been disabled). This is not an
3163 * error as far as ssl_create_cipher_list is concerned, and hence
3164 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3168 else if (cipher_list_tls12_num(sk) == 0) {
3169 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3175 /** specify the ciphers to be used by the SSL */
3176 int SSL_set_cipher_list(SSL *s, const char *str)
3178 STACK_OF(SSL_CIPHER) *sk;
3179 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3184 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3185 &sc->cipher_list, &sc->cipher_list_by_id, str,
3187 /* see comment in SSL_CTX_set_cipher_list */
3190 else if (cipher_list_tls12_num(sk) == 0) {
3191 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3197 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3200 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3201 const SSL_CIPHER *c;
3203 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3209 || sc->peer_ciphers == NULL
3214 clntsk = sc->peer_ciphers;
3215 srvrsk = SSL_get_ciphers(s);
3216 if (clntsk == NULL || srvrsk == NULL)
3219 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3222 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3225 c = sk_SSL_CIPHER_value(clntsk, i);
3226 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3229 n = strlen(c->name);
3246 * Return the requested servername (SNI) value. Note that the behaviour varies
3248 * - whether this is called by the client or the server,
3249 * - if we are before or during/after the handshake,
3250 * - if a resumption or normal handshake is being attempted/has occurred
3251 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3253 * Note that only the host_name type is defined (RFC 3546).
3255 const char *SSL_get_servername(const SSL *s, const int type)
3257 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3264 * If we don't know if we are the client or the server yet then we assume
3267 server = sc->handshake_func == NULL ? 0 : sc->server;
3269 if (type != TLSEXT_NAMETYPE_host_name)
3275 * In TLSv1.3 on the server SNI is not associated with the session
3276 * but in TLSv1.2 or below it is.
3278 * Before the handshake:
3281 * During/after the handshake (TLSv1.2 or below resumption occurred):
3282 * - If a servername was accepted by the server in the original
3283 * handshake then it will return that servername, or NULL otherwise.
3285 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3286 * - The function will return the servername requested by the client in
3287 * this handshake or NULL if none was requested.
3289 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3290 return sc->session->ext.hostname;
3295 * Before the handshake:
3296 * - If a servername has been set via a call to
3297 * SSL_set_tlsext_host_name() then it will return that servername
3298 * - If one has not been set, but a TLSv1.2 resumption is being
3299 * attempted and the session from the original handshake had a
3300 * servername accepted by the server then it will return that
3302 * - Otherwise it returns NULL
3304 * During/after the handshake (TLSv1.2 or below resumption occurred):
3305 * - If the session from the original handshake had a servername accepted
3306 * by the server then it will return that servername.
3307 * - Otherwise it returns the servername set via
3308 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3310 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3311 * - It will return the servername set via SSL_set_tlsext_host_name()
3312 * (or NULL if it was not called).
3314 if (SSL_in_before(s)) {
3315 if (sc->ext.hostname == NULL
3316 && sc->session != NULL
3317 && sc->session->ssl_version != TLS1_3_VERSION)
3318 return sc->session->ext.hostname;
3320 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3321 && sc->session->ext.hostname != NULL)
3322 return sc->session->ext.hostname;
3326 return sc->ext.hostname;
3329 int SSL_get_servername_type(const SSL *s)
3331 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3332 return TLSEXT_NAMETYPE_host_name;
3337 * SSL_select_next_proto implements the standard protocol selection. It is
3338 * expected that this function is called from the callback set by
3339 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3340 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3341 * not included in the length. A byte string of length 0 is invalid. No byte
3342 * string may be truncated. The current, but experimental algorithm for
3343 * selecting the protocol is: 1) If the server doesn't support NPN then this
3344 * is indicated to the callback. In this case, the client application has to
3345 * abort the connection or have a default application level protocol. 2) If
3346 * the server supports NPN, but advertises an empty list then the client
3347 * selects the first protocol in its list, but indicates via the API that this
3348 * fallback case was enacted. 3) Otherwise, the client finds the first
3349 * protocol in the server's list that it supports and selects this protocol.
3350 * This is because it's assumed that the server has better information about
3351 * which protocol a client should use. 4) If the client doesn't support any
3352 * of the server's advertised protocols, then this is treated the same as
3353 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3354 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3356 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3357 const unsigned char *server,
3358 unsigned int server_len,
3359 const unsigned char *client, unsigned int client_len)
3362 const unsigned char *result;
3363 int status = OPENSSL_NPN_UNSUPPORTED;
3366 * For each protocol in server preference order, see if we support it.
3368 for (i = 0; i < server_len;) {
3369 for (j = 0; j < client_len;) {
3370 if (server[i] == client[j] &&
3371 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3372 /* We found a match */
3373 result = &server[i];
3374 status = OPENSSL_NPN_NEGOTIATED;
3384 /* There's no overlap between our protocols and the server's list. */
3386 status = OPENSSL_NPN_NO_OVERLAP;
3389 *out = (unsigned char *)result + 1;
3390 *outlen = result[0];
3394 #ifndef OPENSSL_NO_NEXTPROTONEG
3396 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3397 * client's requested protocol for this connection and returns 0. If the
3398 * client didn't request any protocol, then *data is set to NULL. Note that
3399 * the client can request any protocol it chooses. The value returned from
3400 * this function need not be a member of the list of supported protocols
3401 * provided by the callback.
3403 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3406 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3409 /* We have no other way to indicate error */
3415 *data = sc->ext.npn;
3416 if (*data == NULL) {
3419 *len = (unsigned int)sc->ext.npn_len;
3424 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3425 * a TLS server needs a list of supported protocols for Next Protocol
3426 * Negotiation. The returned list must be in wire format. The list is
3427 * returned by setting |out| to point to it and |outlen| to its length. This
3428 * memory will not be modified, but one should assume that the SSL* keeps a
3429 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3430 * wishes to advertise. Otherwise, no such extension will be included in the
3433 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3434 SSL_CTX_npn_advertised_cb_func cb,
3437 ctx->ext.npn_advertised_cb = cb;
3438 ctx->ext.npn_advertised_cb_arg = arg;
3442 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3443 * client needs to select a protocol from the server's provided list. |out|
3444 * must be set to point to the selected protocol (which may be within |in|).
3445 * The length of the protocol name must be written into |outlen|. The
3446 * server's advertised protocols are provided in |in| and |inlen|. The
3447 * callback can assume that |in| is syntactically valid. The client must
3448 * select a protocol. It is fatal to the connection if this callback returns
3449 * a value other than SSL_TLSEXT_ERR_OK.
3451 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3452 SSL_CTX_npn_select_cb_func cb,
3455 ctx->ext.npn_select_cb = cb;
3456 ctx->ext.npn_select_cb_arg = arg;
3460 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3464 if (protos_len < 2 || protos == NULL)
3467 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3468 if (protos[idx] == 0)
3471 return idx == protos_len;
3474 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3475 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3476 * length-prefixed strings). Returns 0 on success.
3478 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3479 unsigned int protos_len)
3481 unsigned char *alpn;
3483 if (protos_len == 0 || protos == NULL) {
3484 OPENSSL_free(ctx->ext.alpn);
3485 ctx->ext.alpn = NULL;
3486 ctx->ext.alpn_len = 0;
3489 /* Not valid per RFC */
3490 if (!alpn_value_ok(protos, protos_len))
3493 alpn = OPENSSL_memdup(protos, protos_len);
3496 OPENSSL_free(ctx->ext.alpn);
3497 ctx->ext.alpn = alpn;
3498 ctx->ext.alpn_len = protos_len;
3504 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3505 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3506 * length-prefixed strings). Returns 0 on success.
3508 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3509 unsigned int protos_len)
3511 unsigned char *alpn;
3512 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3517 if (protos_len == 0 || protos == NULL) {
3518 OPENSSL_free(sc->ext.alpn);
3519 sc->ext.alpn = NULL;
3520 sc->ext.alpn_len = 0;
3523 /* Not valid per RFC */
3524 if (!alpn_value_ok(protos, protos_len))
3527 alpn = OPENSSL_memdup(protos, protos_len);
3530 OPENSSL_free(sc->ext.alpn);
3531 sc->ext.alpn = alpn;
3532 sc->ext.alpn_len = protos_len;
3538 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3539 * called during ClientHello processing in order to select an ALPN protocol
3540 * from the client's list of offered protocols.
3542 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3543 SSL_CTX_alpn_select_cb_func cb,
3546 ctx->ext.alpn_select_cb = cb;
3547 ctx->ext.alpn_select_cb_arg = arg;
3551 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3552 * On return it sets |*data| to point to |*len| bytes of protocol name
3553 * (not including the leading length-prefix byte). If the server didn't
3554 * respond with a negotiated protocol then |*len| will be zero.
3556 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3559 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3562 /* We have no other way to indicate error */
3568 *data = sc->s3.alpn_selected;
3572 *len = (unsigned int)sc->s3.alpn_selected_len;
3575 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3576 const char *label, size_t llen,
3577 const unsigned char *context, size_t contextlen,
3580 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3585 if (sc->session == NULL
3586 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3589 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3591 contextlen, use_context);
3594 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3595 const char *label, size_t llen,
3596 const unsigned char *context,
3599 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3604 if (sc->version != TLS1_3_VERSION)
3607 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3608 context, contextlen);
3611 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3613 const unsigned char *session_id = a->session_id;
3615 unsigned char tmp_storage[4];
3617 if (a->session_id_length < sizeof(tmp_storage)) {
3618 memset(tmp_storage, 0, sizeof(tmp_storage));
3619 memcpy(tmp_storage, a->session_id, a->session_id_length);
3620 session_id = tmp_storage;
3624 ((unsigned long)session_id[0]) |
3625 ((unsigned long)session_id[1] << 8L) |
3626 ((unsigned long)session_id[2] << 16L) |
3627 ((unsigned long)session_id[3] << 24L);
3632 * NB: If this function (or indeed the hash function which uses a sort of
3633 * coarser function than this one) is changed, ensure
3634 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3635 * being able to construct an SSL_SESSION that will collide with any existing
3636 * session with a matching session ID.
3638 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3640 if (a->ssl_version != b->ssl_version)
3642 if (a->session_id_length != b->session_id_length)
3644 return memcmp(a->session_id, b->session_id, a->session_id_length);
3648 * These wrapper functions should remain rather than redeclaring
3649 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3650 * variable. The reason is that the functions aren't static, they're exposed
3654 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3655 const SSL_METHOD *meth)
3657 SSL_CTX *ret = NULL;
3658 #ifndef OPENSSL_NO_COMP_ALG
3663 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3667 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3670 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3671 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3674 ret = OPENSSL_zalloc(sizeof(*ret));
3678 /* Init the reference counting before any call to SSL_CTX_free */
3679 ret->references = 1;
3680 ret->lock = CRYPTO_THREAD_lock_new();
3681 if (ret->lock == NULL) {
3682 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3686 #ifdef TSAN_REQUIRES_LOCKING
3687 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3688 if (ret->tsan_lock == NULL) {
3689 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3694 ret->libctx = libctx;
3695 if (propq != NULL) {
3696 ret->propq = OPENSSL_strdup(propq);
3697 if (ret->propq == NULL)
3702 ret->min_proto_version = 0;
3703 ret->max_proto_version = 0;
3704 ret->mode = SSL_MODE_AUTO_RETRY;
3705 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3706 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3707 /* We take the system default. */
3708 ret->session_timeout = meth->get_timeout();
3709 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3710 ret->verify_mode = SSL_VERIFY_NONE;
3711 if ((ret->cert = ssl_cert_new()) == NULL) {
3712 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3716 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3717 if (ret->sessions == NULL) {
3718 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3721 ret->cert_store = X509_STORE_new();
3722 if (ret->cert_store == NULL) {
3723 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3726 #ifndef OPENSSL_NO_CT
3727 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3728 if (ret->ctlog_store == NULL) {
3729 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3734 /* initialize cipher/digest methods table */
3735 if (!ssl_load_ciphers(ret))
3737 /* initialise sig algs */
3738 if (!ssl_setup_sig_algs(ret))
3741 if (!ssl_load_groups(ret))
3744 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3745 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3749 if (!ssl_create_cipher_list(ret,
3750 ret->tls13_ciphersuites,
3751 &ret->cipher_list, &ret->cipher_list_by_id,
3752 OSSL_default_cipher_list(), ret->cert)
3753 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3754 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3758 ret->param = X509_VERIFY_PARAM_new();
3759 if (ret->param == NULL) {
3760 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3765 * If these aren't available from the provider we'll get NULL returns.
3766 * That's fine but will cause errors later if SSLv3 is negotiated
3768 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3769 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3771 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3772 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3776 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3777 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3781 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3782 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3786 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3789 /* No compression for DTLS */
3790 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3791 ret->comp_methods = SSL_COMP_get_compression_methods();
3793 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3794 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3796 /* Setup RFC5077 ticket keys */
3797 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3798 sizeof(ret->ext.tick_key_name), 0) <= 0)
3799 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3800 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3801 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3802 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3803 ret->options |= SSL_OP_NO_TICKET;
3805 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3806 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3807 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3811 #ifndef OPENSSL_NO_SRP
3812 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3813 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3817 #ifndef OPENSSL_NO_ENGINE
3818 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3819 # define eng_strx(x) #x
3820 # define eng_str(x) eng_strx(x)
3821 /* Use specific client engine automatically... ignore errors */
3824 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3827 ENGINE_load_builtin_engines();
3828 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3830 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3836 #ifndef OPENSSL_NO_COMP_ALG
3838 * Set the default order: brotli, zlib, zstd
3839 * Including only those enabled algorithms
3841 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3843 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3844 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3845 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3846 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3847 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3848 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3851 * Disable compression by default to prevent CRIME. Applications can
3852 * re-enable compression by configuring
3853 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3854 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3855 * middlebox compatibility by default. This may be disabled by default in
3856 * a later OpenSSL version.
3858 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3860 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3863 * We cannot usefully set a default max_early_data here (which gets
3864 * propagated in SSL_new(), for the following reason: setting the
3865 * SSL field causes tls_construct_stoc_early_data() to tell the
3866 * client that early data will be accepted when constructing a TLS 1.3
3867 * session ticket, and the client will accordingly send us early data
3868 * when using that ticket (if the client has early data to send).
3869 * However, in order for the early data to actually be consumed by
3870 * the application, the application must also have calls to
3871 * SSL_read_early_data(); otherwise we'll just skip past the early data
3872 * and ignore it. So, since the application must add calls to
3873 * SSL_read_early_data(), we also require them to add
3874 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3875 * eliminating the bandwidth-wasting early data in the case described
3878 ret->max_early_data = 0;
3881 * Default recv_max_early_data is a fully loaded single record. Could be
3882 * split across multiple records in practice. We set this differently to
3883 * max_early_data so that, in the default case, we do not advertise any
3884 * support for early_data, but if a client were to send us some (e.g.
3885 * because of an old, stale ticket) then we will tolerate it and skip over
3888 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3890 /* By default we send two session tickets automatically in TLSv1.3 */
3891 ret->num_tickets = 2;
3893 ssl_ctx_system_config(ret);
3901 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3903 return SSL_CTX_new_ex(NULL, NULL, meth);
3906 int SSL_CTX_up_ref(SSL_CTX *ctx)
3910 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3913 REF_PRINT_COUNT("SSL_CTX", ctx);
3914 REF_ASSERT_ISNT(i < 2);
3915 return ((i > 1) ? 1 : 0);
3918 void SSL_CTX_free(SSL_CTX *a)
3926 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3927 REF_PRINT_COUNT("SSL_CTX", a);
3930 REF_ASSERT_ISNT(i < 0);
3932 X509_VERIFY_PARAM_free(a->param);
3933 dane_ctx_final(&a->dane);
3936 * Free internal session cache. However: the remove_cb() may reference
3937 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3938 * after the sessions were flushed.
3939 * As the ex_data handling routines might also touch the session cache,
3940 * the most secure solution seems to be: empty (flush) the cache, then
3941 * free ex_data, then finally free the cache.
3942 * (See ticket [openssl.org #212].)
3944 if (a->sessions != NULL)
3945 SSL_CTX_flush_sessions(a, 0);
3947 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3948 lh_SSL_SESSION_free(a->sessions);
3949 X509_STORE_free(a->cert_store);
3950 #ifndef OPENSSL_NO_CT
3951 CTLOG_STORE_free(a->ctlog_store);
3953 sk_SSL_CIPHER_free(a->cipher_list);
3954 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3955 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3956 ssl_cert_free(a->cert);
3957 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3958 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3959 OSSL_STACK_OF_X509_free(a->extra_certs);
3960 a->comp_methods = NULL;
3961 #ifndef OPENSSL_NO_SRTP
3962 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3964 #ifndef OPENSSL_NO_SRP
3965 ssl_ctx_srp_ctx_free_intern(a);
3967 #ifndef OPENSSL_NO_ENGINE
3968 tls_engine_finish(a->client_cert_engine);
3971 OPENSSL_free(a->ext.ecpointformats);
3972 OPENSSL_free(a->ext.supportedgroups);
3973 OPENSSL_free(a->ext.supported_groups_default);
3974 OPENSSL_free(a->ext.alpn);
3975 OPENSSL_secure_free(a->ext.secure);
3977 ssl_evp_md_free(a->md5);
3978 ssl_evp_md_free(a->sha1);
3980 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3981 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3982 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3983 ssl_evp_md_free(a->ssl_digest_methods[j]);
3984 for (j = 0; j < a->group_list_len; j++) {
3985 OPENSSL_free(a->group_list[j].tlsname);
3986 OPENSSL_free(a->group_list[j].realname);
3987 OPENSSL_free(a->group_list[j].algorithm);
3989 OPENSSL_free(a->group_list);
3991 OPENSSL_free(a->sigalg_lookup_cache);
3993 CRYPTO_THREAD_lock_free(a->lock);
3994 #ifdef TSAN_REQUIRES_LOCKING
3995 CRYPTO_THREAD_lock_free(a->tsan_lock);
3998 OPENSSL_free(a->propq);
4003 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4005 ctx->default_passwd_callback = cb;
4008 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4010 ctx->default_passwd_callback_userdata = u;
4013 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4015 return ctx->default_passwd_callback;
4018 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4020 return ctx->default_passwd_callback_userdata;
4023 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4025 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4030 sc->default_passwd_callback = cb;
4033 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4040 sc->default_passwd_callback_userdata = u;
4043 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4045 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4050 return sc->default_passwd_callback;
4053 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4055 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4060 return sc->default_passwd_callback_userdata;
4063 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4064 int (*cb) (X509_STORE_CTX *, void *),
4067 ctx->app_verify_callback = cb;
4068 ctx->app_verify_arg = arg;
4071 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4072 int (*cb) (int, X509_STORE_CTX *))
4074 ctx->verify_mode = mode;
4075 ctx->default_verify_callback = cb;
4078 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4080 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4083 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4085 ssl_cert_set_cert_cb(c->cert, cb, arg);
4088 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4090 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4095 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4098 void ssl_set_masks(SSL_CONNECTION *s)
4101 uint32_t *pvalid = s->s3.tmp.valid_flags;
4102 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4103 unsigned long mask_k, mask_a;
4104 int have_ecc_cert, ecdsa_ok;
4109 dh_tmp = (c->dh_tmp != NULL
4110 || c->dh_tmp_cb != NULL
4113 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4114 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4115 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4116 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4120 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4121 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4123 #ifndef OPENSSL_NO_GOST
4124 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4125 mask_k |= SSL_kGOST | SSL_kGOST18;
4126 mask_a |= SSL_aGOST12;
4128 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4129 mask_k |= SSL_kGOST | SSL_kGOST18;
4130 mask_a |= SSL_aGOST12;
4132 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4133 mask_k |= SSL_kGOST;
4134 mask_a |= SSL_aGOST01;
4145 * If we only have an RSA-PSS certificate allow RSA authentication
4146 * if TLS 1.2 and peer supports it.
4149 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4150 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4151 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4158 mask_a |= SSL_aNULL;
4161 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4162 * depending on the key usage extension.
4164 if (have_ecc_cert) {
4166 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4167 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4168 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4171 mask_a |= SSL_aECDSA;
4173 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4174 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4175 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4176 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4177 mask_a |= SSL_aECDSA;
4179 /* Allow Ed448 for TLS 1.2 if peer supports it */
4180 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4181 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4182 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4183 mask_a |= SSL_aECDSA;
4185 mask_k |= SSL_kECDHE;
4187 #ifndef OPENSSL_NO_PSK
4190 if (mask_k & SSL_kRSA)
4191 mask_k |= SSL_kRSAPSK;
4192 if (mask_k & SSL_kDHE)
4193 mask_k |= SSL_kDHEPSK;
4194 if (mask_k & SSL_kECDHE)
4195 mask_k |= SSL_kECDHEPSK;
4198 s->s3.tmp.mask_k = mask_k;
4199 s->s3.tmp.mask_a = mask_a;
4202 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4204 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4205 /* key usage, if present, must allow signing */
4206 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4207 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4211 return 1; /* all checks are ok */
4214 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4215 const unsigned char **serverinfo,
4216 size_t *serverinfo_length)
4218 CERT_PKEY *cpk = s->s3.tmp.cert;
4219 *serverinfo_length = 0;
4221 if (cpk == NULL || cpk->serverinfo == NULL)
4224 *serverinfo = cpk->serverinfo;
4225 *serverinfo_length = cpk->serverinfo_length;
4229 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4234 * If the session_id_length is 0, we are not supposed to cache it, and it
4235 * would be rather hard to do anyway :-)
4237 if (s->session->session_id_length == 0)
4241 * If sid_ctx_length is 0 there is no specific application context
4242 * associated with this session, so when we try to resume it and
4243 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4244 * indication that this is actually a session for the proper application
4245 * context, and the *handshake* will fail, not just the resumption attempt.
4246 * Do not cache (on the server) these sessions that are not resumable
4247 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4249 if (s->server && s->session->sid_ctx_length == 0
4250 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4253 i = s->session_ctx->session_cache_mode;
4255 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4257 * Add the session to the internal cache. In server side TLSv1.3 we
4258 * normally don't do this because by default it's a full stateless ticket
4259 * with only a dummy session id so there is no reason to cache it,
4261 * - we are doing early_data, in which case we cache so that we can
4263 * - the application has set a remove_session_cb so needs to know about
4264 * session timeout events
4265 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4267 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4268 && (!SSL_CONNECTION_IS_TLS13(s)
4270 || (s->max_early_data > 0
4271 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4272 || s->session_ctx->remove_session_cb != NULL
4273 || (s->options & SSL_OP_NO_TICKET) != 0))
4274 SSL_CTX_add_session(s->session_ctx, s->session);
4277 * Add the session to the external cache. We do this even in server side
4278 * TLSv1.3 without early data because some applications just want to
4279 * know about the creation of a session and aren't doing a full cache.
4281 if (s->session_ctx->new_session_cb != NULL) {
4282 SSL_SESSION_up_ref(s->session);
4283 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4285 SSL_SESSION_free(s->session);
4289 /* auto flush every 255 connections */
4290 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4291 TSAN_QUALIFIER int *stat;
4293 if (mode & SSL_SESS_CACHE_CLIENT)
4294 stat = &s->session_ctx->stats.sess_connect_good;
4296 stat = &s->session_ctx->stats.sess_accept_good;
4297 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4298 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4302 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4307 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4312 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4315 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4317 /* TODO(QUIC): Do we want this for QUIC? */
4319 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4322 if (s->method != meth) {
4323 const SSL_METHOD *sm = s->method;
4324 int (*hf) (SSL *) = sc->handshake_func;
4326 if (sm->version == meth->version)
4331 ret = s->method->ssl_init(s);
4334 if (hf == sm->ssl_connect)
4335 sc->handshake_func = meth->ssl_connect;
4336 else if (hf == sm->ssl_accept)
4337 sc->handshake_func = meth->ssl_accept;
4342 int SSL_get_error(const SSL *s, int i)
4347 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4350 return SSL_ERROR_NONE;
4352 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4354 return SSL_ERROR_SSL;
4357 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4358 * where we do encode the error
4360 if ((l = ERR_peek_error()) != 0) {
4361 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4362 return SSL_ERROR_SYSCALL;
4364 return SSL_ERROR_SSL;
4367 if (SSL_want_read(s)) {
4368 bio = SSL_get_rbio(s);
4369 if (BIO_should_read(bio))
4370 return SSL_ERROR_WANT_READ;
4371 else if (BIO_should_write(bio))
4373 * This one doesn't make too much sense ... We never try to write
4374 * to the rbio, and an application program where rbio and wbio
4375 * are separate couldn't even know what it should wait for.
4376 * However if we ever set s->rwstate incorrectly (so that we have
4377 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4378 * wbio *are* the same, this test works around that bug; so it
4379 * might be safer to keep it.
4381 return SSL_ERROR_WANT_WRITE;
4382 else if (BIO_should_io_special(bio)) {
4383 reason = BIO_get_retry_reason(bio);
4384 if (reason == BIO_RR_CONNECT)
4385 return SSL_ERROR_WANT_CONNECT;
4386 else if (reason == BIO_RR_ACCEPT)
4387 return SSL_ERROR_WANT_ACCEPT;
4389 return SSL_ERROR_SYSCALL; /* unknown */
4393 if (SSL_want_write(s)) {
4394 /* Access wbio directly - in order to use the buffered bio if present */
4396 if (BIO_should_write(bio))
4397 return SSL_ERROR_WANT_WRITE;
4398 else if (BIO_should_read(bio))
4400 * See above (SSL_want_read(s) with BIO_should_write(bio))
4402 return SSL_ERROR_WANT_READ;
4403 else if (BIO_should_io_special(bio)) {
4404 reason = BIO_get_retry_reason(bio);
4405 if (reason == BIO_RR_CONNECT)
4406 return SSL_ERROR_WANT_CONNECT;
4407 else if (reason == BIO_RR_ACCEPT)
4408 return SSL_ERROR_WANT_ACCEPT;
4410 return SSL_ERROR_SYSCALL;
4413 if (SSL_want_x509_lookup(s))
4414 return SSL_ERROR_WANT_X509_LOOKUP;
4415 if (SSL_want_retry_verify(s))
4416 return SSL_ERROR_WANT_RETRY_VERIFY;
4417 if (SSL_want_async(s))
4418 return SSL_ERROR_WANT_ASYNC;
4419 if (SSL_want_async_job(s))
4420 return SSL_ERROR_WANT_ASYNC_JOB;
4421 if (SSL_want_client_hello_cb(s))
4422 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4424 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4425 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4426 return SSL_ERROR_ZERO_RETURN;
4428 return SSL_ERROR_SYSCALL;
4431 static int ssl_do_handshake_intern(void *vargs)
4433 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4435 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4440 return sc->handshake_func(s);
4443 int SSL_do_handshake(SSL *s)
4446 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4448 /* TODO(QUIC): Special handling for QUIC will be needed */
4452 if (sc->handshake_func == NULL) {
4453 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4457 ossl_statem_check_finish_init(sc, -1);
4459 s->method->ssl_renegotiate_check(s, 0);
4461 if (SSL_in_init(s) || SSL_in_before(s)) {
4462 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4463 struct ssl_async_args args;
4465 memset(&args, 0, sizeof(args));
4468 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4470 ret = sc->handshake_func(s);
4476 void SSL_set_accept_state(SSL *s)
4478 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4480 /* TODO(QUIC): Special handling for QUIC will be needed */
4486 ossl_statem_clear(sc);
4487 sc->handshake_func = s->method->ssl_accept;
4488 /* Ignore return value. Its a void public API function */
4489 clear_record_layer(sc);
4492 void SSL_set_connect_state(SSL *s)
4494 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4496 /* TODO(QUIC): Special handling for QUIC will be needed */
4502 ossl_statem_clear(sc);
4503 sc->handshake_func = s->method->ssl_connect;
4504 /* Ignore return value. Its a void public API function */
4505 clear_record_layer(sc);
4508 int ssl_undefined_function(SSL *s)
4510 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4514 int ssl_undefined_void_function(void)
4516 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4520 int ssl_undefined_const_function(const SSL *s)
4525 const SSL_METHOD *ssl_bad_method(int ver)
4527 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4531 const char *ssl_protocol_to_string(int version)
4535 case TLS1_3_VERSION:
4538 case TLS1_2_VERSION:
4541 case TLS1_1_VERSION:
4556 case DTLS1_2_VERSION:
4564 const char *SSL_get_version(const SSL *s)
4566 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4568 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4572 return ssl_protocol_to_string(sc->version);
4575 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4577 STACK_OF(X509_NAME) *sk;
4586 if ((sk = sk_X509_NAME_new_null()) == NULL)
4588 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4589 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4591 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4594 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4596 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4605 SSL *SSL_dup(SSL *s)
4609 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4610 SSL_CONNECTION *retsc;
4611 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4616 /* If we're not quiescent, just up_ref! */
4617 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4618 CRYPTO_UP_REF(&s->references, &i, s->lock);
4623 * Otherwise, copy configuration state, and session if set.
4625 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4627 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4630 if (sc->session != NULL) {
4632 * Arranges to share the same session via up_ref. This "copies"
4633 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4635 if (!SSL_copy_session_id(ret, s))
4639 * No session has been established yet, so we have to expect that
4640 * s->cert or ret->cert will be changed later -- they should not both
4641 * point to the same object, and thus we can't use
4642 * SSL_copy_session_id.
4644 if (!SSL_set_ssl_method(ret, s->method))
4647 if (sc->cert != NULL) {
4648 ssl_cert_free(retsc->cert);
4649 retsc->cert = ssl_cert_dup(sc->cert);
4650 if (retsc->cert == NULL)
4654 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4655 (int)sc->sid_ctx_length))
4659 if (!ssl_dane_dup(retsc, sc))
4661 retsc->version = sc->version;
4662 retsc->options = sc->options;
4663 retsc->min_proto_version = sc->min_proto_version;
4664 retsc->max_proto_version = sc->max_proto_version;
4665 retsc->mode = sc->mode;
4666 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4667 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4668 retsc->msg_callback = sc->msg_callback;
4669 retsc->msg_callback_arg = sc->msg_callback_arg;
4670 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4671 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4672 retsc->generate_session_id = sc->generate_session_id;
4674 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4676 /* copy app data, a little dangerous perhaps */
4677 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4680 retsc->server = sc->server;
4681 if (sc->handshake_func) {
4683 SSL_set_accept_state(ret);
4685 SSL_set_connect_state(ret);
4687 retsc->shutdown = sc->shutdown;
4688 retsc->hit = sc->hit;
4690 retsc->default_passwd_callback = sc->default_passwd_callback;
4691 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4693 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4695 /* dup the cipher_list and cipher_list_by_id stacks */
4696 if (sc->cipher_list != NULL) {
4697 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4700 if (sc->cipher_list_by_id != NULL)
4701 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4705 /* Dup the client_CA list */
4706 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4707 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4717 X509 *SSL_get_certificate(const SSL *s)
4719 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4724 if (sc->cert != NULL)
4725 return sc->cert->key->x509;
4730 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4732 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4737 if (sc->cert != NULL)
4738 return sc->cert->key->privatekey;
4743 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4745 if (ctx->cert != NULL)
4746 return ctx->cert->key->x509;
4751 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4753 if (ctx->cert != NULL)
4754 return ctx->cert->key->privatekey;
4759 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4761 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4766 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4767 return sc->session->cipher;
4771 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4773 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4778 return sc->s3.tmp.new_cipher;
4781 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4783 #ifndef OPENSSL_NO_COMP
4784 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4789 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4795 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4797 #ifndef OPENSSL_NO_COMP
4798 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4803 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4809 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4813 if (s->bbio != NULL) {
4814 /* Already buffered. */
4818 bbio = BIO_new(BIO_f_buffer());
4819 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
4821 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4825 s->wbio = BIO_push(bbio, s->wbio);
4827 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4832 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4834 /* callers ensure s is never null */
4835 if (s->bbio == NULL)
4838 s->wbio = BIO_pop(s->wbio);
4839 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4847 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4849 ctx->quiet_shutdown = mode;
4852 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4854 return ctx->quiet_shutdown;
4857 void SSL_set_quiet_shutdown(SSL *s, int mode)
4859 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4861 /* TODO(QUIC): Do we want this for QUIC? */
4865 sc->quiet_shutdown = mode;
4868 int SSL_get_quiet_shutdown(const SSL *s)
4870 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4872 /* TODO(QUIC): Do we want this for QUIC? */
4876 return sc->quiet_shutdown;
4879 void SSL_set_shutdown(SSL *s, int mode)
4881 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4883 /* TODO(QUIC): Do we want this for QUIC? */
4887 sc->shutdown = mode;
4890 int SSL_get_shutdown(const SSL *s)
4892 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4894 /* TODO(QUIC): Do we want this for QUIC? */
4898 return sc->shutdown;
4901 int SSL_version(const SSL *s)
4903 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4905 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4912 int SSL_client_version(const SSL *s)
4914 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4916 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4920 return sc->client_version;
4923 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4928 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4931 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4933 /* TODO(QUIC): Do we need this for QUIC support? */
4937 if (ssl->ctx == ctx)
4940 ctx = sc->session_ctx;
4941 new_cert = ssl_cert_dup(ctx->cert);
4942 if (new_cert == NULL) {
4946 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4947 ssl_cert_free(new_cert);
4951 ssl_cert_free(sc->cert);
4952 sc->cert = new_cert;
4955 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4956 * so setter APIs must prevent invalid lengths from entering the system.
4958 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4962 * If the session ID context matches that of the parent SSL_CTX,
4963 * inherit it from the new SSL_CTX as well. If however the context does
4964 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4965 * leave it unchanged.
4967 if ((ssl->ctx != NULL) &&
4968 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4969 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4970 sc->sid_ctx_length = ctx->sid_ctx_length;
4971 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4974 SSL_CTX_up_ref(ctx);
4975 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4981 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4983 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4987 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4989 X509_LOOKUP *lookup;
4991 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4995 /* We ignore errors, in case the directory doesn't exist */
4998 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5005 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5007 X509_LOOKUP *lookup;
5009 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5013 /* We ignore errors, in case the file doesn't exist */
5016 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5024 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5026 X509_LOOKUP *lookup;
5028 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5032 /* We ignore errors, in case the directory doesn't exist */
5035 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5042 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5044 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5048 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5050 return X509_STORE_load_path(ctx->cert_store, CApath);
5053 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5055 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5059 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5062 if (CAfile == NULL && CApath == NULL)
5064 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5066 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5071 void SSL_set_info_callback(SSL *ssl,
5072 void (*cb) (const SSL *ssl, int type, int val))
5074 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5079 sc->info_callback = cb;
5083 * One compiler (Diab DCC) doesn't like argument names in returned function
5086 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5089 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5094 return sc->info_callback;
5097 void SSL_set_verify_result(SSL *ssl, long arg)
5099 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5104 sc->verify_result = arg;
5107 long SSL_get_verify_result(const SSL *ssl)
5109 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5114 return sc->verify_result;
5117 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5119 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5125 return sizeof(sc->s3.client_random);
5126 if (outlen > sizeof(sc->s3.client_random))
5127 outlen = sizeof(sc->s3.client_random);
5128 memcpy(out, sc->s3.client_random, outlen);
5132 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5134 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5140 return sizeof(sc->s3.server_random);
5141 if (outlen > sizeof(sc->s3.server_random))
5142 outlen = sizeof(sc->s3.server_random);
5143 memcpy(out, sc->s3.server_random, outlen);
5147 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5148 unsigned char *out, size_t outlen)
5151 return session->master_key_length;
5152 if (outlen > session->master_key_length)
5153 outlen = session->master_key_length;
5154 memcpy(out, session->master_key, outlen);
5158 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5161 if (len > sizeof(sess->master_key))
5164 memcpy(sess->master_key, in, len);
5165 sess->master_key_length = len;
5170 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5172 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5175 void *SSL_get_ex_data(const SSL *s, int idx)
5177 return CRYPTO_get_ex_data(&s->ex_data, idx);
5180 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5182 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5185 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5187 return CRYPTO_get_ex_data(&s->ex_data, idx);
5190 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5192 return ctx->cert_store;
5195 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5197 X509_STORE_free(ctx->cert_store);
5198 ctx->cert_store = store;
5201 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5204 X509_STORE_up_ref(store);
5205 SSL_CTX_set_cert_store(ctx, store);
5208 int SSL_want(const SSL *s)
5210 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5218 #ifndef OPENSSL_NO_PSK
5219 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5221 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5222 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5225 OPENSSL_free(ctx->cert->psk_identity_hint);
5226 if (identity_hint != NULL) {
5227 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5228 if (ctx->cert->psk_identity_hint == NULL)
5231 ctx->cert->psk_identity_hint = NULL;
5235 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5237 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5242 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5243 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5246 OPENSSL_free(sc->cert->psk_identity_hint);
5247 if (identity_hint != NULL) {
5248 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5249 if (sc->cert->psk_identity_hint == NULL)
5252 sc->cert->psk_identity_hint = NULL;
5256 const char *SSL_get_psk_identity_hint(const SSL *s)
5258 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5260 if (sc == NULL || sc->session == NULL)
5263 return sc->session->psk_identity_hint;
5266 const char *SSL_get_psk_identity(const SSL *s)
5268 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5270 if (sc == NULL || sc->session == NULL)
5273 return sc->session->psk_identity;
5276 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5278 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5283 sc->psk_client_callback = cb;
5286 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5288 ctx->psk_client_callback = cb;
5291 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5293 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5298 sc->psk_server_callback = cb;
5301 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5303 ctx->psk_server_callback = cb;
5307 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5309 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5314 sc->psk_find_session_cb = cb;
5317 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5318 SSL_psk_find_session_cb_func cb)
5320 ctx->psk_find_session_cb = cb;
5323 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5325 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5330 sc->psk_use_session_cb = cb;
5333 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5334 SSL_psk_use_session_cb_func cb)
5336 ctx->psk_use_session_cb = cb;
5339 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5340 void (*cb) (int write_p, int version,
5341 int content_type, const void *buf,
5342 size_t len, SSL *ssl, void *arg))
5344 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5347 void SSL_set_msg_callback(SSL *ssl,
5348 void (*cb) (int write_p, int version,
5349 int content_type, const void *buf,
5350 size_t len, SSL *ssl, void *arg))
5352 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5355 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5356 int (*cb) (SSL *ssl,
5360 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5361 (void (*)(void))cb);
5364 void SSL_set_not_resumable_session_callback(SSL *ssl,
5365 int (*cb) (SSL *ssl,
5366 int is_forward_secure))
5368 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5369 (void (*)(void))cb);
5372 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5373 size_t (*cb) (SSL *ssl, int type,
5374 size_t len, void *arg))
5376 ctx->record_padding_cb = cb;
5379 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5381 ctx->record_padding_arg = arg;
5384 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5386 return ctx->record_padding_arg;
5389 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5391 /* block size of 0 or 1 is basically no padding */
5392 if (block_size == 1)
5393 ctx->block_padding = 0;
5394 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5395 ctx->block_padding = block_size;
5401 int SSL_set_record_padding_callback(SSL *ssl,
5402 size_t (*cb) (SSL *ssl, int type,
5403 size_t len, void *arg))
5406 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5411 b = SSL_get_wbio(ssl);
5412 if (b == NULL || !BIO_get_ktls_send(b)) {
5413 sc->rlayer.record_padding_cb = cb;
5419 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5421 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5426 sc->rlayer.record_padding_arg = arg;
5429 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5431 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5436 return sc->rlayer.record_padding_arg;
5439 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5441 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5446 /* block size of 0 or 1 is basically no padding */
5447 if (block_size == 1)
5448 sc->rlayer.block_padding = 0;
5449 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5450 sc->rlayer.block_padding = block_size;
5456 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5458 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5463 sc->num_tickets = num_tickets;
5468 size_t SSL_get_num_tickets(const SSL *s)
5470 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5475 return sc->num_tickets;
5478 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5480 ctx->num_tickets = num_tickets;
5485 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5487 return ctx->num_tickets;
5490 /* Retrieve handshake hashes */
5491 int ssl_handshake_hash(SSL_CONNECTION *s,
5492 unsigned char *out, size_t outlen,
5495 EVP_MD_CTX *ctx = NULL;
5496 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5497 int hashleni = EVP_MD_CTX_get_size(hdgst);
5500 if (hashleni < 0 || (size_t)hashleni > outlen) {
5501 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5505 ctx = EVP_MD_CTX_new();
5507 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5511 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5512 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5513 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5517 *hashlen = hashleni;
5521 EVP_MD_CTX_free(ctx);
5525 int SSL_session_reused(const SSL *s)
5527 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5535 int SSL_is_server(const SSL *s)
5537 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5545 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5546 void SSL_set_debug(SSL *s, int debug)
5548 /* Old function was do-nothing anyway... */
5554 void SSL_set_security_level(SSL *s, int level)
5556 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5561 sc->cert->sec_level = level;
5564 int SSL_get_security_level(const SSL *s)
5566 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5571 return sc->cert->sec_level;
5574 void SSL_set_security_callback(SSL *s,
5575 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5576 int op, int bits, int nid,
5577 void *other, void *ex))
5579 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5584 sc->cert->sec_cb = cb;
5587 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5588 const SSL_CTX *ctx, int op,
5589 int bits, int nid, void *other,
5591 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5596 return sc->cert->sec_cb;
5599 void SSL_set0_security_ex_data(SSL *s, void *ex)
5601 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5606 sc->cert->sec_ex = ex;
5609 void *SSL_get0_security_ex_data(const SSL *s)
5611 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5616 return sc->cert->sec_ex;
5619 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5621 ctx->cert->sec_level = level;
5624 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5626 return ctx->cert->sec_level;
5629 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5630 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5631 int op, int bits, int nid,
5632 void *other, void *ex))
5634 ctx->cert->sec_cb = cb;
5637 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5643 return ctx->cert->sec_cb;
5646 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5648 ctx->cert->sec_ex = ex;
5651 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5653 return ctx->cert->sec_ex;
5656 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5658 return ctx->options;
5661 uint64_t SSL_get_options(const SSL *s)
5663 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5671 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5673 return ctx->options |= op;
5676 uint64_t SSL_set_options(SSL *s, uint64_t op)
5678 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5679 OSSL_PARAM options[2], *opts = options;
5686 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5688 *opts = OSSL_PARAM_construct_end();
5690 /* Ignore return value */
5691 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5696 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5698 return ctx->options &= ~op;
5701 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5703 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5708 return sc->options &= ~op;
5711 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5713 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5718 return sc->verified_chain;
5721 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5723 #ifndef OPENSSL_NO_CT
5726 * Moves SCTs from the |src| stack to the |dst| stack.
5727 * The source of each SCT will be set to |origin|.
5728 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5730 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5732 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5733 sct_source_t origin)
5739 *dst = sk_SCT_new_null();
5741 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5746 while ((sct = sk_SCT_pop(src)) != NULL) {
5747 if (SCT_set_source(sct, origin) != 1)
5750 if (sk_SCT_push(*dst, sct) <= 0)
5758 sk_SCT_push(src, sct); /* Put the SCT back */
5763 * Look for data collected during ServerHello and parse if found.
5764 * Returns the number of SCTs extracted.
5766 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5768 int scts_extracted = 0;
5770 if (s->ext.scts != NULL) {
5771 const unsigned char *p = s->ext.scts;
5772 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5774 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5776 SCT_LIST_free(scts);
5779 return scts_extracted;
5783 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5784 * contains an SCT X509 extension. They will be stored in |s->scts|.
5786 * - The number of SCTs extracted, assuming an OCSP response exists.
5787 * - 0 if no OCSP response exists or it contains no SCTs.
5788 * - A negative integer if an error occurs.
5790 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5792 # ifndef OPENSSL_NO_OCSP
5793 int scts_extracted = 0;
5794 const unsigned char *p;
5795 OCSP_BASICRESP *br = NULL;
5796 OCSP_RESPONSE *rsp = NULL;
5797 STACK_OF(SCT) *scts = NULL;
5800 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5803 p = s->ext.ocsp.resp;
5804 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5808 br = OCSP_response_get1_basic(rsp);
5812 for (i = 0; i < OCSP_resp_count(br); ++i) {
5813 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5819 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5821 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5822 if (scts_extracted < 0)
5826 SCT_LIST_free(scts);
5827 OCSP_BASICRESP_free(br);
5828 OCSP_RESPONSE_free(rsp);
5829 return scts_extracted;
5831 /* Behave as if no OCSP response exists */
5837 * Attempts to extract SCTs from the peer certificate.
5838 * Return the number of SCTs extracted, or a negative integer if an error
5841 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5843 int scts_extracted = 0;
5844 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5847 STACK_OF(SCT) *scts =
5848 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5851 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5853 SCT_LIST_free(scts);
5856 return scts_extracted;
5860 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5861 * response (if it exists) and X509v3 extensions in the certificate.
5862 * Returns NULL if an error occurs.
5864 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5866 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5871 if (!sc->scts_parsed) {
5872 if (ct_extract_tls_extension_scts(sc) < 0 ||
5873 ct_extract_ocsp_response_scts(sc) < 0 ||
5874 ct_extract_x509v3_extension_scts(sc) < 0)
5877 sc->scts_parsed = 1;
5884 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5885 const STACK_OF(SCT) *scts, void *unused_arg)
5890 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5891 const STACK_OF(SCT) *scts, void *unused_arg)
5893 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5896 for (i = 0; i < count; ++i) {
5897 SCT *sct = sk_SCT_value(scts, i);
5898 int status = SCT_get_validation_status(sct);
5900 if (status == SCT_VALIDATION_STATUS_VALID)
5903 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5907 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5910 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5916 * Since code exists that uses the custom extension handler for CT, look
5917 * for this and throw an error if they have already registered to use CT.
5919 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5920 TLSEXT_TYPE_signed_certificate_timestamp))
5922 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5926 if (callback != NULL) {
5928 * If we are validating CT, then we MUST accept SCTs served via OCSP
5930 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5934 sc->ct_validation_callback = callback;
5935 sc->ct_validation_callback_arg = arg;
5940 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5941 ssl_ct_validation_cb callback, void *arg)
5944 * Since code exists that uses the custom extension handler for CT, look for
5945 * this and throw an error if they have already registered to use CT.
5947 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5948 TLSEXT_TYPE_signed_certificate_timestamp))
5950 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5954 ctx->ct_validation_callback = callback;
5955 ctx->ct_validation_callback_arg = arg;
5959 int SSL_ct_is_enabled(const SSL *s)
5961 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5966 return sc->ct_validation_callback != NULL;
5969 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5971 return ctx->ct_validation_callback != NULL;
5974 int ssl_validate_ct(SSL_CONNECTION *s)
5977 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5979 SSL_DANE *dane = &s->dane;
5980 CT_POLICY_EVAL_CTX *ctx = NULL;
5981 const STACK_OF(SCT) *scts;
5984 * If no callback is set, the peer is anonymous, or its chain is invalid,
5985 * skip SCT validation - just return success. Applications that continue
5986 * handshakes without certificates, with unverified chains, or pinned leaf
5987 * certificates are outside the scope of the WebPKI and CT.
5989 * The above exclusions notwithstanding the vast majority of peers will
5990 * have rather ordinary certificate chains validated by typical
5991 * applications that perform certificate verification and therefore will
5992 * process SCTs when enabled.
5994 if (s->ct_validation_callback == NULL || cert == NULL ||
5995 s->verify_result != X509_V_OK ||
5996 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6000 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6001 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6003 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6004 switch (dane->mtlsa->usage) {
6005 case DANETLS_USAGE_DANE_TA:
6006 case DANETLS_USAGE_DANE_EE:
6011 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6012 SSL_CONNECTION_GET_CTX(s)->propq);
6014 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6018 issuer = sk_X509_value(s->verified_chain, 1);
6019 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6020 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6021 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6022 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6023 CT_POLICY_EVAL_CTX_set_time(
6024 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6026 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6029 * This function returns success (> 0) only when all the SCTs are valid, 0
6030 * when some are invalid, and < 0 on various internal errors (out of
6031 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6032 * reason to abort the handshake, that decision is up to the callback.
6033 * Therefore, we error out only in the unexpected case that the return
6034 * value is negative.
6036 * XXX: One might well argue that the return value of this function is an
6037 * unfortunate design choice. Its job is only to determine the validation
6038 * status of each of the provided SCTs. So long as it correctly separates
6039 * the wheat from the chaff it should return success. Failure in this case
6040 * ought to correspond to an inability to carry out its duties.
6042 if (SCT_LIST_validate(scts, ctx) < 0) {
6043 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6047 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6049 ret = 0; /* This function returns 0 on failure */
6051 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6054 CT_POLICY_EVAL_CTX_free(ctx);
6056 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6057 * failure return code here. Also the application may wish the complete
6058 * the handshake, and then disconnect cleanly at a higher layer, after
6059 * checking the verification status of the completed connection.
6061 * We therefore force a certificate verification failure which will be
6062 * visible via SSL_get_verify_result() and cached as part of any resumed
6065 * Note: the permissive callback is for information gathering only, always
6066 * returns success, and does not affect verification status. Only the
6067 * strict callback or a custom application-specified callback can trigger
6068 * connection failure or record a verification error.
6071 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6075 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6077 switch (validation_mode) {
6079 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6081 case SSL_CT_VALIDATION_PERMISSIVE:
6082 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6083 case SSL_CT_VALIDATION_STRICT:
6084 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6088 int SSL_enable_ct(SSL *s, int validation_mode)
6090 switch (validation_mode) {
6092 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6094 case SSL_CT_VALIDATION_PERMISSIVE:
6095 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6096 case SSL_CT_VALIDATION_STRICT:
6097 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6101 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6103 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6106 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6108 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6111 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6113 CTLOG_STORE_free(ctx->ctlog_store);
6114 ctx->ctlog_store = logs;
6117 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6119 return ctx->ctlog_store;
6122 #endif /* OPENSSL_NO_CT */
6124 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6127 c->client_hello_cb = cb;
6128 c->client_hello_cb_arg = arg;
6131 int SSL_client_hello_isv2(SSL *s)
6133 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6138 if (sc->clienthello == NULL)
6140 return sc->clienthello->isv2;
6143 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6145 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6150 if (sc->clienthello == NULL)
6152 return sc->clienthello->legacy_version;
6155 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6157 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6162 if (sc->clienthello == NULL)
6165 *out = sc->clienthello->random;
6166 return SSL3_RANDOM_SIZE;
6169 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6171 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6176 if (sc->clienthello == NULL)
6179 *out = sc->clienthello->session_id;
6180 return sc->clienthello->session_id_len;
6183 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6185 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6190 if (sc->clienthello == NULL)
6193 *out = PACKET_data(&sc->clienthello->ciphersuites);
6194 return PACKET_remaining(&sc->clienthello->ciphersuites);
6197 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6199 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6204 if (sc->clienthello == NULL)
6207 *out = sc->clienthello->compressions;
6208 return sc->clienthello->compressions_len;
6211 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6216 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6221 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6223 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6224 ext = sc->clienthello->pre_proc_exts + i;
6233 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6235 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6236 ext = sc->clienthello->pre_proc_exts + i;
6238 if (ext->received_order >= num)
6240 present[ext->received_order] = ext->type;
6247 OPENSSL_free(present);
6251 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6255 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6260 if (sc->clienthello == NULL || num_exts == NULL)
6262 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6263 ext = sc->clienthello->pre_proc_exts + i;
6275 if (*num_exts < num)
6277 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6278 ext = sc->clienthello->pre_proc_exts + i;
6280 if (ext->received_order >= num)
6282 exts[ext->received_order] = ext->type;
6289 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6294 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6299 if (sc->clienthello == NULL)
6301 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6302 r = sc->clienthello->pre_proc_exts + i;
6303 if (r->present && r->type == type) {
6305 *out = PACKET_data(&r->data);
6307 *outlen = PACKET_remaining(&r->data);
6314 int SSL_free_buffers(SSL *ssl)
6317 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6324 return rl->rrlmethod->free_buffers(rl->rrl)
6325 && rl->wrlmethod->free_buffers(rl->wrl);
6328 int SSL_alloc_buffers(SSL *ssl)
6331 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6338 return rl->rrlmethod->alloc_buffers(rl->rrl)
6339 && rl->wrlmethod->alloc_buffers(rl->wrl);
6342 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6344 ctx->keylog_callback = cb;
6347 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6349 return ctx->keylog_callback;
6352 static int nss_keylog_int(const char *prefix,
6354 const uint8_t *parameter_1,
6355 size_t parameter_1_len,
6356 const uint8_t *parameter_2,
6357 size_t parameter_2_len)
6360 char *cursor = NULL;
6364 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6366 if (sctx->keylog_callback == NULL)
6370 * Our output buffer will contain the following strings, rendered with
6371 * space characters in between, terminated by a NULL character: first the
6372 * prefix, then the first parameter, then the second parameter. The
6373 * meaning of each parameter depends on the specific key material being
6374 * logged. Note that the first and second parameters are encoded in
6375 * hexadecimal, so we need a buffer that is twice their lengths.
6377 prefix_len = strlen(prefix);
6378 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6379 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6382 strcpy(cursor, prefix);
6383 cursor += prefix_len;
6386 for (i = 0; i < parameter_1_len; i++) {
6387 sprintf(cursor, "%02x", parameter_1[i]);
6392 for (i = 0; i < parameter_2_len; i++) {
6393 sprintf(cursor, "%02x", parameter_2[i]);
6398 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6399 OPENSSL_clear_free(out, out_len);
6404 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6405 const uint8_t *encrypted_premaster,
6406 size_t encrypted_premaster_len,
6407 const uint8_t *premaster,
6408 size_t premaster_len)
6410 if (encrypted_premaster_len < 8) {
6411 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6415 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6416 return nss_keylog_int("RSA",
6418 encrypted_premaster,
6424 int ssl_log_secret(SSL_CONNECTION *sc,
6426 const uint8_t *secret,
6429 return nss_keylog_int(label,
6431 sc->s3.client_random,
6437 #define SSLV2_CIPHER_LEN 3
6439 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6443 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6445 if (PACKET_remaining(cipher_suites) == 0) {
6446 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6450 if (PACKET_remaining(cipher_suites) % n != 0) {
6451 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6455 OPENSSL_free(s->s3.tmp.ciphers_raw);
6456 s->s3.tmp.ciphers_raw = NULL;
6457 s->s3.tmp.ciphers_rawlen = 0;
6460 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6461 PACKET sslv2ciphers = *cipher_suites;
6462 unsigned int leadbyte;
6466 * We store the raw ciphers list in SSLv3+ format so we need to do some
6467 * preprocessing to convert the list first. If there are any SSLv2 only
6468 * ciphersuites with a non-zero leading byte then we are going to
6469 * slightly over allocate because we won't store those. But that isn't a
6472 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6473 s->s3.tmp.ciphers_raw = raw;
6475 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6478 for (s->s3.tmp.ciphers_rawlen = 0;
6479 PACKET_remaining(&sslv2ciphers) > 0;
6480 raw += TLS_CIPHER_LEN) {
6481 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6483 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6486 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6487 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6488 OPENSSL_free(s->s3.tmp.ciphers_raw);
6489 s->s3.tmp.ciphers_raw = NULL;
6490 s->s3.tmp.ciphers_rawlen = 0;
6494 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6496 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6497 &s->s3.tmp.ciphers_rawlen)) {
6498 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6504 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6505 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6506 STACK_OF(SSL_CIPHER) **scsvs)
6509 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6514 if (!PACKET_buf_init(&pkt, bytes, len))
6516 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6519 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6520 STACK_OF(SSL_CIPHER) **skp,
6521 STACK_OF(SSL_CIPHER) **scsvs_out,
6522 int sslv2format, int fatal)
6524 const SSL_CIPHER *c;
6525 STACK_OF(SSL_CIPHER) *sk = NULL;
6526 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6528 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6529 unsigned char cipher[SSLV2_CIPHER_LEN];
6531 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6533 if (PACKET_remaining(cipher_suites) == 0) {
6535 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6537 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6541 if (PACKET_remaining(cipher_suites) % n != 0) {
6543 SSLfatal(s, SSL_AD_DECODE_ERROR,
6544 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6546 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6550 sk = sk_SSL_CIPHER_new_null();
6551 scsvs = sk_SSL_CIPHER_new_null();
6552 if (sk == NULL || scsvs == NULL) {
6554 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6556 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6560 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6562 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6563 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6564 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6566 if (sslv2format && cipher[0] != '\0')
6569 /* For SSLv2-compat, ignore leading 0-byte. */
6570 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6572 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6573 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6575 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6577 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6582 if (PACKET_remaining(cipher_suites) > 0) {
6584 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6586 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6593 sk_SSL_CIPHER_free(sk);
6594 if (scsvs_out != NULL)
6597 sk_SSL_CIPHER_free(scsvs);
6600 sk_SSL_CIPHER_free(sk);
6601 sk_SSL_CIPHER_free(scsvs);
6605 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6607 ctx->max_early_data = max_early_data;
6612 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6614 return ctx->max_early_data;
6617 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6619 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6624 sc->max_early_data = max_early_data;
6629 uint32_t SSL_get_max_early_data(const SSL *s)
6631 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6636 return sc->max_early_data;
6639 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6641 ctx->recv_max_early_data = recv_max_early_data;
6646 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6648 return ctx->recv_max_early_data;
6651 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6653 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6658 sc->recv_max_early_data = recv_max_early_data;
6663 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6665 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6670 return sc->recv_max_early_data;
6673 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6675 /* Return any active Max Fragment Len extension */
6676 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6677 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6679 /* return current SSL connection setting */
6680 return sc->max_send_fragment;
6683 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6685 /* Return a value regarding an active Max Fragment Len extension */
6686 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6687 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6688 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6690 /* else limit |split_send_fragment| to current |max_send_fragment| */
6691 if (sc->split_send_fragment > sc->max_send_fragment)
6692 return sc->max_send_fragment;
6694 /* return current SSL connection setting */
6695 return sc->split_send_fragment;
6698 int SSL_stateless(SSL *s)
6701 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6703 /* TODO(QUIC): This will need further work. */
6707 /* Ensure there is no state left over from a previous invocation */
6713 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6714 ret = SSL_accept(s);
6715 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6717 if (ret > 0 && sc->ext.cookieok)
6720 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6726 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6728 ctx->pha_enabled = val;
6731 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6733 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6738 sc->pha_enabled = val;
6741 int SSL_verify_client_post_handshake(SSL *ssl)
6743 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6748 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6749 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6753 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6757 if (!SSL_is_init_finished(ssl)) {
6758 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6762 switch (sc->post_handshake_auth) {
6764 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6767 case SSL_PHA_EXT_SENT:
6768 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6770 case SSL_PHA_EXT_RECEIVED:
6772 case SSL_PHA_REQUEST_PENDING:
6773 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6775 case SSL_PHA_REQUESTED:
6776 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6780 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6782 /* checks verify_mode and algorithm_auth */
6783 if (!send_certificate_request(sc)) {
6784 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6785 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6789 ossl_statem_set_in_init(sc, 1);
6793 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6794 SSL_CTX_generate_session_ticket_fn gen_cb,
6795 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6798 ctx->generate_ticket_cb = gen_cb;
6799 ctx->decrypt_ticket_cb = dec_cb;
6800 ctx->ticket_cb_data = arg;
6804 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6805 SSL_allow_early_data_cb_fn cb,
6808 ctx->allow_early_data_cb = cb;
6809 ctx->allow_early_data_cb_data = arg;
6812 void SSL_set_allow_early_data_cb(SSL *s,
6813 SSL_allow_early_data_cb_fn cb,
6816 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6821 sc->allow_early_data_cb = cb;
6822 sc->allow_early_data_cb_data = arg;
6825 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6827 const char *properties)
6829 const EVP_CIPHER *ciph;
6831 ciph = tls_get_cipher_from_engine(nid);
6836 * If there is no engine cipher then we do an explicit fetch. This may fail
6837 * and that could be ok
6840 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6846 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6848 /* Don't up-ref an implicit EVP_CIPHER */
6849 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6853 * The cipher was explicitly fetched and therefore it is safe to cast
6856 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6859 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6864 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6866 * The cipher was explicitly fetched and therefore it is safe to cast
6869 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6873 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6875 const char *properties)
6879 md = tls_get_digest_from_engine(nid);
6883 /* Otherwise we do an explicit fetch */
6885 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6890 int ssl_evp_md_up_ref(const EVP_MD *md)
6892 /* Don't up-ref an implicit EVP_MD */
6893 if (EVP_MD_get0_provider(md) == NULL)
6897 * The digest was explicitly fetched and therefore it is safe to cast
6900 return EVP_MD_up_ref((EVP_MD *)md);
6903 void ssl_evp_md_free(const EVP_MD *md)
6908 if (EVP_MD_get0_provider(md) != NULL) {
6910 * The digest was explicitly fetched and therefore it is safe to cast
6913 EVP_MD_free((EVP_MD *)md);
6917 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6919 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6924 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6925 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6926 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6929 EVP_PKEY_free(sc->cert->dh_tmp);
6930 sc->cert->dh_tmp = dhpkey;
6934 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6936 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6937 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6938 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6941 EVP_PKEY_free(ctx->cert->dh_tmp);
6942 ctx->cert->dh_tmp = dhpkey;
6946 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
6948 #ifndef OPENSSL_NO_QUIC
6949 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
6954 return -1; /* TODO(QUIC) */
6960 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
6962 #ifndef OPENSSL_NO_QUIC
6963 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
6968 return -1; /* TODO(QUIC) */