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"
29 #include "quic/quic_local.h"
31 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
32 unsigned char *s, size_t t, size_t *u)
34 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
37 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
39 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
42 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
43 size_t s, unsigned char *t)
45 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
48 static int ssl_undefined_function_6(int r)
50 return ssl_undefined_function(NULL);
53 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
54 size_t s, const char *t, size_t u,
55 const unsigned char *v, size_t w, int x)
57 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
60 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
62 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
65 SSL3_ENC_METHOD ssl3_undef_enc_method = {
66 ssl_undefined_function_8,
67 ssl_undefined_function_3,
68 ssl_undefined_function_4,
69 ssl_undefined_function_5,
70 NULL, /* client_finished_label */
71 0, /* client_finished_label_len */
72 NULL, /* server_finished_label */
73 0, /* server_finished_label_len */
74 ssl_undefined_function_6,
75 ssl_undefined_function_7,
78 struct ssl_async_args {
82 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
84 int (*func_read) (SSL *, void *, size_t, size_t *);
85 int (*func_write) (SSL *, const void *, size_t, size_t *);
86 int (*func_other) (SSL *);
96 DANETLS_MATCHING_FULL, 0, NID_undef
99 DANETLS_MATCHING_2256, 1, NID_sha256
102 DANETLS_MATCHING_2512, 2, NID_sha512
106 static int dane_ctx_enable(struct dane_ctx_st *dctx)
108 const EVP_MD **mdevp;
110 uint8_t mdmax = DANETLS_MATCHING_LAST;
111 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
114 if (dctx->mdevp != NULL)
117 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
118 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
120 if (mdord == NULL || mdevp == NULL) {
126 /* Install default entries */
127 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
130 if (dane_mds[i].nid == NID_undef ||
131 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
133 mdevp[dane_mds[i].mtype] = md;
134 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
144 static void dane_ctx_final(struct dane_ctx_st *dctx)
146 OPENSSL_free(dctx->mdevp);
149 OPENSSL_free(dctx->mdord);
154 static void tlsa_free(danetls_record *t)
158 OPENSSL_free(t->data);
159 EVP_PKEY_free(t->spki);
163 static void dane_final(SSL_DANE *dane)
165 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
168 OSSL_STACK_OF_X509_free(dane->certs);
171 X509_free(dane->mcert);
179 * dane_copy - Copy dane configuration, sans verification state.
181 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
186 if (!DANETLS_ENABLED(&from->dane))
189 num = sk_danetls_record_num(from->dane.trecs);
190 dane_final(&to->dane);
191 to->dane.flags = from->dane.flags;
192 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
193 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
195 if (to->dane.trecs == NULL) {
196 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
200 for (i = 0; i < num; ++i) {
201 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
203 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
204 t->selector, t->mtype, t->data, t->dlen) <= 0)
210 static int dane_mtype_set(struct dane_ctx_st *dctx,
211 const EVP_MD *md, uint8_t mtype, uint8_t ord)
215 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
216 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
220 if (mtype > dctx->mdmax) {
221 const EVP_MD **mdevp;
223 int n = ((int)mtype) + 1;
225 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
230 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
235 /* Zero-fill any gaps */
236 for (i = dctx->mdmax + 1; i < mtype; ++i) {
244 dctx->mdevp[mtype] = md;
245 /* Coerce ordinal of disabled matching types to 0 */
246 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
251 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
253 if (mtype > dane->dctx->mdmax)
255 return dane->dctx->mdevp[mtype];
258 static int dane_tlsa_add(SSL_DANE *dane,
261 uint8_t mtype, const unsigned char *data, size_t dlen)
264 const EVP_MD *md = NULL;
265 int ilen = (int)dlen;
269 if (dane->trecs == NULL) {
270 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
274 if (ilen < 0 || dlen != (size_t)ilen) {
275 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
279 if (usage > DANETLS_USAGE_LAST) {
280 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
284 if (selector > DANETLS_SELECTOR_LAST) {
285 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
289 if (mtype != DANETLS_MATCHING_FULL) {
290 md = tlsa_md_get(dane, mtype);
292 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
297 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
298 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
302 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
306 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL)
310 t->selector = selector;
312 t->data = OPENSSL_malloc(dlen);
313 if (t->data == NULL) {
317 memcpy(t->data, data, dlen);
320 /* Validate and cache full certificate or public key */
321 if (mtype == DANETLS_MATCHING_FULL) {
322 const unsigned char *p = data;
324 EVP_PKEY *pkey = NULL;
327 case DANETLS_SELECTOR_CERT:
328 if (!d2i_X509(&cert, &p, ilen) || p < data ||
329 dlen != (size_t)(p - data)) {
331 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
334 if (X509_get0_pubkey(cert) == NULL) {
336 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
340 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
346 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
347 * records that contain full certificates of trust-anchors that are
348 * not present in the wire chain. For usage PKIX-TA(0), we augment
349 * the chain with untrusted Full(0) certificates from DNS, in case
350 * they are missing from the chain.
352 if ((dane->certs == NULL &&
353 (dane->certs = sk_X509_new_null()) == NULL) ||
354 !sk_X509_push(dane->certs, cert)) {
355 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
362 case DANETLS_SELECTOR_SPKI:
363 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
364 dlen != (size_t)(p - data)) {
366 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
371 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
372 * records that contain full bare keys of trust-anchors that are
373 * not present in the wire chain.
375 if (usage == DANETLS_USAGE_DANE_TA)
384 * Find the right insertion point for the new record.
386 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
387 * they can be processed first, as they require no chain building, and no
388 * expiration or hostname checks. Because DANE-EE(3) is numerically
389 * largest, this is accomplished via descending sort by "usage".
391 * We also sort in descending order by matching ordinal to simplify
392 * the implementation of digest agility in the verification code.
394 * The choice of order for the selector is not significant, so we
395 * use the same descending order for consistency.
397 num = sk_danetls_record_num(dane->trecs);
398 for (i = 0; i < num; ++i) {
399 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
401 if (rec->usage > usage)
403 if (rec->usage < usage)
405 if (rec->selector > selector)
407 if (rec->selector < selector)
409 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
414 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
416 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
419 dane->umask |= DANETLS_USAGE_BIT(usage);
425 * Return 0 if there is only one version configured and it was disabled
426 * at configure time. Return 1 otherwise.
428 static int ssl_check_allowed_versions(int min_version, int max_version)
430 int minisdtls = 0, maxisdtls = 0;
432 /* Figure out if we're doing DTLS versions or TLS versions */
433 if (min_version == DTLS1_BAD_VER
434 || min_version >> 8 == DTLS1_VERSION_MAJOR)
436 if (max_version == DTLS1_BAD_VER
437 || max_version >> 8 == DTLS1_VERSION_MAJOR)
439 /* A wildcard version of 0 could be DTLS or TLS. */
440 if ((minisdtls && !maxisdtls && max_version != 0)
441 || (maxisdtls && !minisdtls && min_version != 0)) {
442 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
446 if (minisdtls || maxisdtls) {
447 /* Do DTLS version checks. */
448 if (min_version == 0)
449 /* Ignore DTLS1_BAD_VER */
450 min_version = DTLS1_VERSION;
451 if (max_version == 0)
452 max_version = DTLS1_2_VERSION;
453 #ifdef OPENSSL_NO_DTLS1_2
454 if (max_version == DTLS1_2_VERSION)
455 max_version = DTLS1_VERSION;
457 #ifdef OPENSSL_NO_DTLS1
458 if (min_version == DTLS1_VERSION)
459 min_version = DTLS1_2_VERSION;
461 /* Done massaging versions; do the check. */
463 #ifdef OPENSSL_NO_DTLS1
464 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
465 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
467 #ifdef OPENSSL_NO_DTLS1_2
468 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
469 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
474 /* Regular TLS version checks. */
475 if (min_version == 0)
476 min_version = SSL3_VERSION;
477 if (max_version == 0)
478 max_version = TLS1_3_VERSION;
479 #ifdef OPENSSL_NO_TLS1_3
480 if (max_version == TLS1_3_VERSION)
481 max_version = TLS1_2_VERSION;
483 #ifdef OPENSSL_NO_TLS1_2
484 if (max_version == TLS1_2_VERSION)
485 max_version = TLS1_1_VERSION;
487 #ifdef OPENSSL_NO_TLS1_1
488 if (max_version == TLS1_1_VERSION)
489 max_version = TLS1_VERSION;
491 #ifdef OPENSSL_NO_TLS1
492 if (max_version == TLS1_VERSION)
493 max_version = SSL3_VERSION;
495 #ifdef OPENSSL_NO_SSL3
496 if (min_version == SSL3_VERSION)
497 min_version = TLS1_VERSION;
499 #ifdef OPENSSL_NO_TLS1
500 if (min_version == TLS1_VERSION)
501 min_version = TLS1_1_VERSION;
503 #ifdef OPENSSL_NO_TLS1_1
504 if (min_version == TLS1_1_VERSION)
505 min_version = TLS1_2_VERSION;
507 #ifdef OPENSSL_NO_TLS1_2
508 if (min_version == TLS1_2_VERSION)
509 min_version = TLS1_3_VERSION;
511 /* Done massaging versions; do the check. */
513 #ifdef OPENSSL_NO_SSL3
514 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
516 #ifdef OPENSSL_NO_TLS1
517 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
519 #ifdef OPENSSL_NO_TLS1_1
520 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
522 #ifdef OPENSSL_NO_TLS1_2
523 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
525 #ifdef OPENSSL_NO_TLS1_3
526 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
534 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
536 * Define a VPROC function for HP NonStop build ssl library.
537 * This is used by platform version identification tools.
538 * Do not inline this procedure or make it static.
540 # define OPENSSL_VPROC_STRING_(x) x##_SSL
541 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
542 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
543 void OPENSSL_VPROC_FUNC(void) {}
546 static int clear_record_layer(SSL_CONNECTION *s)
550 /* We try and reset both record layers even if one fails */
552 ret = ssl_set_new_record_layer(s,
553 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
555 OSSL_RECORD_DIRECTION_READ,
556 OSSL_RECORD_PROTECTION_LEVEL_NONE,
557 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
558 NID_undef, NULL, NULL);
560 ret &= ssl_set_new_record_layer(s,
561 SSL_CONNECTION_IS_DTLS(s) ? DTLS_ANY_VERSION
563 OSSL_RECORD_DIRECTION_WRITE,
564 OSSL_RECORD_PROTECTION_LEVEL_NONE,
565 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
566 NID_undef, NULL, NULL);
567 /* SSLfatal already called in the event of failure */
571 int SSL_clear(SSL *s)
573 if (s->method == NULL) {
574 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
578 return s->method->ssl_reset(s);
581 int ossl_ssl_connection_reset(SSL *s)
583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
588 if (ssl_clear_bad_session(sc)) {
589 SSL_SESSION_free(sc->session);
592 SSL_SESSION_free(sc->psksession);
593 sc->psksession = NULL;
594 OPENSSL_free(sc->psksession_id);
595 sc->psksession_id = NULL;
596 sc->psksession_id_len = 0;
597 sc->hello_retry_request = 0;
598 sc->sent_tickets = 0;
604 if (sc->renegotiate) {
605 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
609 ossl_statem_clear(sc);
611 /* TODO(QUIC): Version handling not yet clear */
612 sc->version = s->method->version;
613 sc->client_version = sc->version;
614 sc->rwstate = SSL_NOTHING;
616 BUF_MEM_free(sc->init_buf);
618 sc->first_packet = 0;
620 sc->key_update = SSL_KEY_UPDATE_NONE;
621 memset(sc->ext.compress_certificate_from_peer, 0,
622 sizeof(sc->ext.compress_certificate_from_peer));
623 sc->ext.compress_certificate_sent = 0;
625 EVP_MD_CTX_free(sc->pha_dgst);
628 /* Reset DANE verification result state */
631 X509_free(sc->dane.mcert);
632 sc->dane.mcert = NULL;
633 sc->dane.mtlsa = NULL;
635 /* Clear the verification result peername */
636 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
638 /* Clear any shared connection state */
639 OPENSSL_free(sc->shared_sigalgs);
640 sc->shared_sigalgs = NULL;
641 sc->shared_sigalgslen = 0;
644 * Check to see if we were changed into a different method, if so, revert
647 if (s->method != s->defltmeth) {
648 s->method->ssl_deinit(s);
649 s->method = s->defltmeth;
650 if (!s->method->ssl_init(s))
653 if (!s->method->ssl_clear(s))
657 RECORD_LAYER_clear(&sc->rlayer);
658 BIO_free(sc->rlayer.rrlnext);
659 sc->rlayer.rrlnext = NULL;
661 if (!clear_record_layer(sc))
667 #ifndef OPENSSL_NO_DEPRECATED_3_0
668 /** Used to change an SSL_CTXs default SSL method type */
669 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
671 STACK_OF(SSL_CIPHER) *sk;
675 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
676 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
679 sk = ssl_create_cipher_list(ctx,
680 ctx->tls13_ciphersuites,
682 &(ctx->cipher_list_by_id),
683 OSSL_default_cipher_list(), ctx->cert);
684 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
685 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
692 SSL *SSL_new(SSL_CTX *ctx)
695 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
698 if (ctx->method == NULL) {
699 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
702 return ctx->method->ssl_new(ctx);
705 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, const SSL_METHOD *method, int type)
710 ssl->lock = CRYPTO_THREAD_lock_new();
711 if (ssl->lock == NULL)
717 ssl->defltmeth = ssl->method = method;
719 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
725 SSL *ossl_ssl_connection_new_int(SSL_CTX *ctx, const SSL_METHOD *method)
730 s = OPENSSL_zalloc(sizeof(*s));
735 if (!ossl_ssl_init(ssl, ctx, method, SSL_TYPE_SSL_CONNECTION)) {
741 #ifndef OPENSSL_NO_QUIC
742 /* set the parent (user visible) ssl to self */
746 RECORD_LAYER_init(&s->rlayer, s);
748 s->options = ctx->options;
749 s->dane.flags = ctx->dane.flags;
750 s->min_proto_version = ctx->min_proto_version;
751 s->max_proto_version = ctx->max_proto_version;
753 s->max_cert_list = ctx->max_cert_list;
754 s->max_early_data = ctx->max_early_data;
755 s->recv_max_early_data = ctx->recv_max_early_data;
756 s->num_tickets = ctx->num_tickets;
757 s->pha_enabled = ctx->pha_enabled;
759 /* Shallow copy of the ciphersuites stack */
760 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
761 if (s->tls13_ciphersuites == NULL)
765 * Earlier library versions used to copy the pointer to the CERT, not
766 * its contents; only when setting new parameters for the per-SSL
767 * copy, ssl_cert_new would be called (and the direct reference to
768 * the per-SSL_CTX settings would be lost, but those still were
769 * indirectly accessed for various purposes, and for that reason they
770 * used to be known as s->ctx->default_cert). Now we don't look at the
771 * SSL_CTX's CERT after having duplicated it once.
773 s->cert = ssl_cert_dup(ctx->cert);
777 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
778 s->msg_callback = ctx->msg_callback;
779 s->msg_callback_arg = ctx->msg_callback_arg;
780 s->verify_mode = ctx->verify_mode;
781 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
782 s->rlayer.record_padding_cb = ctx->record_padding_cb;
783 s->rlayer.record_padding_arg = ctx->record_padding_arg;
784 s->rlayer.block_padding = ctx->block_padding;
785 s->sid_ctx_length = ctx->sid_ctx_length;
786 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
788 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
789 s->verify_callback = ctx->default_verify_callback;
790 s->generate_session_id = ctx->generate_session_id;
792 s->param = X509_VERIFY_PARAM_new();
793 if (s->param == NULL)
795 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
796 s->quiet_shutdown = ctx->quiet_shutdown;
798 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
799 s->max_send_fragment = ctx->max_send_fragment;
800 s->split_send_fragment = ctx->split_send_fragment;
801 s->max_pipelines = ctx->max_pipelines;
802 s->rlayer.default_read_buf_len = ctx->default_read_buf_len;
805 s->ext.debug_arg = NULL;
806 s->ext.ticket_expected = 0;
807 s->ext.status_type = ctx->ext.status_type;
808 s->ext.status_expected = 0;
809 s->ext.ocsp.ids = NULL;
810 s->ext.ocsp.exts = NULL;
811 s->ext.ocsp.resp = NULL;
812 s->ext.ocsp.resp_len = 0;
814 s->session_ctx = ctx;
815 if (ctx->ext.ecpointformats) {
816 s->ext.ecpointformats =
817 OPENSSL_memdup(ctx->ext.ecpointformats,
818 ctx->ext.ecpointformats_len);
819 if (!s->ext.ecpointformats) {
820 s->ext.ecpointformats_len = 0;
823 s->ext.ecpointformats_len =
824 ctx->ext.ecpointformats_len;
826 if (ctx->ext.supportedgroups) {
827 s->ext.supportedgroups =
828 OPENSSL_memdup(ctx->ext.supportedgroups,
829 ctx->ext.supportedgroups_len
830 * sizeof(*ctx->ext.supportedgroups));
831 if (!s->ext.supportedgroups) {
832 s->ext.supportedgroups_len = 0;
835 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
838 #ifndef OPENSSL_NO_NEXTPROTONEG
842 if (ctx->ext.alpn != NULL) {
843 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
844 if (s->ext.alpn == NULL) {
848 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
849 s->ext.alpn_len = ctx->ext.alpn_len;
852 s->verified_chain = NULL;
853 s->verify_result = X509_V_OK;
855 s->default_passwd_callback = ctx->default_passwd_callback;
856 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
858 s->key_update = SSL_KEY_UPDATE_NONE;
860 s->allow_early_data_cb = ctx->allow_early_data_cb;
861 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
863 if (!method->ssl_init(ssl))
866 s->server = (method->ssl_accept == ssl_undefined_function) ? 0 : 1;
868 if (!method->ssl_reset(ssl))
871 #ifndef OPENSSL_NO_PSK
872 s->psk_client_callback = ctx->psk_client_callback;
873 s->psk_server_callback = ctx->psk_server_callback;
875 s->psk_find_session_cb = ctx->psk_find_session_cb;
876 s->psk_use_session_cb = ctx->psk_use_session_cb;
878 s->async_cb = ctx->async_cb;
879 s->async_cb_arg = ctx->async_cb_arg;
883 #ifndef OPENSSL_NO_COMP_ALG
884 memcpy(s->cert_comp_prefs, ctx->cert_comp_prefs, sizeof(s->cert_comp_prefs));
887 #ifndef OPENSSL_NO_CT
888 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
889 ctx->ct_validation_callback_arg))
895 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
898 ERR_raise(ERR_LIB_SSL, ERR_R_ASN1_LIB);
901 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
907 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
909 return ossl_ssl_connection_new_int(ctx, ctx->method);
912 int SSL_is_dtls(const SSL *s)
914 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
919 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
922 int SSL_up_ref(SSL *s)
926 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
929 REF_PRINT_COUNT("SSL", s);
930 REF_ASSERT_ISNT(i < 2);
931 return ((i > 1) ? 1 : 0);
934 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
935 unsigned int sid_ctx_len)
937 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
938 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
941 ctx->sid_ctx_length = sid_ctx_len;
942 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
947 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
948 unsigned int sid_ctx_len)
950 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
955 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
956 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
959 sc->sid_ctx_length = sid_ctx_len;
960 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
965 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
967 if (!CRYPTO_THREAD_write_lock(ctx->lock))
969 ctx->generate_session_id = cb;
970 CRYPTO_THREAD_unlock(ctx->lock);
974 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
976 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
978 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
980 sc->generate_session_id = cb;
981 CRYPTO_THREAD_unlock(ssl->lock);
985 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
989 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
990 * we can "construct" a session to give us the desired check - i.e. to
991 * find if there's a session in the hash table that would conflict with
992 * any new session built out of this id/id_len and the ssl_version in use
996 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
998 if (sc == NULL || id_len > sizeof(r.session_id))
1001 r.ssl_version = sc->version;
1002 r.session_id_length = id_len;
1003 memcpy(r.session_id, id, id_len);
1005 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1007 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1008 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1012 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1014 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1017 int SSL_set_purpose(SSL *s, int purpose)
1019 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1024 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1027 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1029 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1032 int SSL_set_trust(SSL *s, int trust)
1034 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1039 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1042 int SSL_set1_host(SSL *s, const char *hostname)
1044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1049 /* If a hostname is provided and parses as an IP address,
1050 * treat it as such. */
1051 if (hostname != NULL
1052 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1055 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1058 int SSL_add1_host(SSL *s, const char *hostname)
1060 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1065 /* If a hostname is provided and parses as an IP address,
1066 * treat it as such. */
1069 ASN1_OCTET_STRING *ip;
1072 ip = a2i_IPADDRESS(hostname);
1074 /* We didn't want it; only to check if it *is* an IP address */
1075 ASN1_OCTET_STRING_free(ip);
1077 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1080 OPENSSL_free(old_ip);
1081 /* There can be only one IP address */
1085 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1089 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1092 void SSL_set_hostflags(SSL *s, unsigned int flags)
1094 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1099 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1102 const char *SSL_get0_peername(SSL *s)
1104 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1109 return X509_VERIFY_PARAM_get0_peername(sc->param);
1112 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1114 return dane_ctx_enable(&ctx->dane);
1117 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1119 unsigned long orig = ctx->dane.flags;
1121 ctx->dane.flags |= flags;
1125 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1127 unsigned long orig = ctx->dane.flags;
1129 ctx->dane.flags &= ~flags;
1133 int SSL_dane_enable(SSL *s, const char *basedomain)
1136 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1142 if (s->ctx->dane.mdmax == 0) {
1143 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1146 if (dane->trecs != NULL) {
1147 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1152 * Default SNI name. This rejects empty names, while set1_host below
1153 * accepts them and disables hostname checks. To avoid side-effects with
1154 * invalid input, set the SNI name first.
1156 if (sc->ext.hostname == NULL) {
1157 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1158 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1163 /* Primary RFC6125 reference identifier */
1164 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1165 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1171 dane->dctx = &s->ctx->dane;
1172 dane->trecs = sk_danetls_record_new_null();
1174 if (dane->trecs == NULL) {
1175 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
1181 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1184 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1189 orig = sc->dane.flags;
1191 sc->dane.flags |= flags;
1195 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1198 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1203 orig = sc->dane.flags;
1205 sc->dane.flags &= ~flags;
1209 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1212 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1219 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1223 *mcert = dane->mcert;
1225 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1230 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1231 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1234 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1241 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1245 *usage = dane->mtlsa->usage;
1247 *selector = dane->mtlsa->selector;
1249 *mtype = dane->mtlsa->mtype;
1251 *data = dane->mtlsa->data;
1253 *dlen = dane->mtlsa->dlen;
1258 SSL_DANE *SSL_get0_dane(SSL *s)
1260 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1268 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1269 uint8_t mtype, const unsigned char *data, size_t dlen)
1271 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1276 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1279 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1282 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1285 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1287 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1290 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1292 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1297 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1300 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1305 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1307 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1315 void SSL_certs_clear(SSL *s)
1317 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1322 ssl_cert_clear_certs(sc->cert);
1325 void SSL_free(SSL *s)
1331 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1332 REF_PRINT_COUNT("SSL", s);
1335 REF_ASSERT_ISNT(i < 0);
1337 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1339 if (s->method != NULL)
1340 s->method->ssl_free(s);
1342 SSL_CTX_free(s->ctx);
1343 CRYPTO_THREAD_lock_free(s->lock);
1348 void ossl_ssl_connection_free(SSL *ssl)
1352 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1356 X509_VERIFY_PARAM_free(s->param);
1357 dane_final(&s->dane);
1359 /* Ignore return value */
1360 ssl_free_wbio_buffer(s);
1362 RECORD_LAYER_clear(&s->rlayer);
1364 BUF_MEM_free(s->init_buf);
1366 /* add extra stuff */
1367 sk_SSL_CIPHER_free(s->cipher_list);
1368 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1369 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1370 sk_SSL_CIPHER_free(s->peer_ciphers);
1372 /* Make the next call work :-) */
1373 if (s->session != NULL) {
1374 ssl_clear_bad_session(s);
1375 SSL_SESSION_free(s->session);
1377 SSL_SESSION_free(s->psksession);
1378 OPENSSL_free(s->psksession_id);
1380 ssl_cert_free(s->cert);
1381 OPENSSL_free(s->shared_sigalgs);
1382 /* Free up if allocated */
1384 OPENSSL_free(s->ext.hostname);
1385 SSL_CTX_free(s->session_ctx);
1386 OPENSSL_free(s->ext.ecpointformats);
1387 OPENSSL_free(s->ext.peer_ecpointformats);
1388 OPENSSL_free(s->ext.supportedgroups);
1389 OPENSSL_free(s->ext.peer_supportedgroups);
1390 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1391 #ifndef OPENSSL_NO_OCSP
1392 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1394 #ifndef OPENSSL_NO_CT
1395 SCT_LIST_free(s->scts);
1396 OPENSSL_free(s->ext.scts);
1398 OPENSSL_free(s->ext.ocsp.resp);
1399 OPENSSL_free(s->ext.alpn);
1400 OPENSSL_free(s->ext.tls13_cookie);
1401 if (s->clienthello != NULL)
1402 OPENSSL_free(s->clienthello->pre_proc_exts);
1403 OPENSSL_free(s->clienthello);
1404 OPENSSL_free(s->pha_context);
1405 EVP_MD_CTX_free(s->pha_dgst);
1407 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1408 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1410 OSSL_STACK_OF_X509_free(s->verified_chain);
1412 if (ssl->method != NULL)
1413 ssl->method->ssl_deinit(ssl);
1415 ASYNC_WAIT_CTX_free(s->waitctx);
1417 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1418 OPENSSL_free(s->ext.npn);
1421 #ifndef OPENSSL_NO_SRTP
1422 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1426 * We do this late. We want to ensure that any other references we held to
1427 * these BIOs are freed first *before* we call BIO_free_all(), because
1428 * BIO_free_all() will only free each BIO in the chain if the number of
1429 * references to the first BIO have dropped to 0
1431 BIO_free_all(s->wbio);
1433 BIO_free_all(s->rbio);
1437 void SSL_set0_rbio(SSL *s, BIO *rbio)
1439 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1440 #ifndef OPENSSL_NO_QUIC
1441 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1444 ossl_quic_conn_set0_net_rbio(qc, rbio);
1452 BIO_free_all(sc->rbio);
1454 sc->rlayer.rrlmethod->set1_bio(sc->rlayer.rrl, sc->rbio);
1457 void SSL_set0_wbio(SSL *s, BIO *wbio)
1459 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1460 #ifndef OPENSSL_NO_QUIC
1461 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
1464 ossl_quic_conn_set0_net_wbio(qc, wbio);
1473 * If the output buffering BIO is still in place, remove it
1475 if (sc->bbio != NULL)
1476 sc->wbio = BIO_pop(sc->wbio);
1478 BIO_free_all(sc->wbio);
1481 /* Re-attach |bbio| to the new |wbio|. */
1482 if (sc->bbio != NULL)
1483 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1485 sc->rlayer.wrlmethod->set1_bio(sc->rlayer.wrl, sc->wbio);
1488 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1491 * For historical reasons, this function has many different cases in
1492 * ownership handling.
1495 /* If nothing has changed, do nothing */
1496 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1500 * If the two arguments are equal then one fewer reference is granted by the
1501 * caller than we want to take
1503 if (rbio != NULL && rbio == wbio)
1507 * If only the wbio is changed only adopt one reference.
1509 if (rbio == SSL_get_rbio(s)) {
1510 SSL_set0_wbio(s, wbio);
1514 * There is an asymmetry here for historical reasons. If only the rbio is
1515 * changed AND the rbio and wbio were originally different, then we only
1516 * adopt one reference.
1518 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1519 SSL_set0_rbio(s, rbio);
1523 /* Otherwise, adopt both references. */
1524 SSL_set0_rbio(s, rbio);
1525 SSL_set0_wbio(s, wbio);
1528 BIO *SSL_get_rbio(const SSL *s)
1530 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1531 #ifndef OPENSSL_NO_QUIC
1532 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1535 return ossl_quic_conn_get_net_rbio(qc);
1544 BIO *SSL_get_wbio(const SSL *s)
1546 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1547 #ifndef OPENSSL_NO_QUIC
1548 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
1551 return ossl_quic_conn_get_net_rbio(qc);
1557 if (sc->bbio != NULL) {
1559 * If |bbio| is active, the true caller-configured BIO is its
1562 return BIO_next(sc->bbio);
1567 int SSL_get_fd(const SSL *s)
1569 return SSL_get_rfd(s);
1572 int SSL_get_rfd(const SSL *s)
1577 b = SSL_get_rbio(s);
1578 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1580 BIO_get_fd(r, &ret);
1584 int SSL_get_wfd(const SSL *s)
1589 b = SSL_get_wbio(s);
1590 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1592 BIO_get_fd(r, &ret);
1596 #ifndef OPENSSL_NO_SOCK
1597 int SSL_set_fd(SSL *s, int fd)
1602 bio = BIO_new(BIO_s_socket());
1605 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1608 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1609 SSL_set_bio(s, bio, bio);
1610 #ifndef OPENSSL_NO_KTLS
1612 * The new socket is created successfully regardless of ktls_enable.
1613 * ktls_enable doesn't change any functionality of the socket, except
1614 * changing the setsockopt to enable the processing of ktls_start.
1615 * Thus, it is not a problem to call it for non-TLS sockets.
1618 #endif /* OPENSSL_NO_KTLS */
1624 int SSL_set_wfd(SSL *s, int fd)
1626 BIO *rbio = SSL_get_rbio(s);
1628 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1629 || (int)BIO_get_fd(rbio, NULL) != fd) {
1630 BIO *bio = BIO_new(BIO_s_socket());
1633 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1636 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1637 SSL_set0_wbio(s, bio);
1638 #ifndef OPENSSL_NO_KTLS
1640 * The new socket is created successfully regardless of ktls_enable.
1641 * ktls_enable doesn't change any functionality of the socket, except
1642 * changing the setsockopt to enable the processing of ktls_start.
1643 * Thus, it is not a problem to call it for non-TLS sockets.
1646 #endif /* OPENSSL_NO_KTLS */
1649 SSL_set0_wbio(s, rbio);
1654 int SSL_set_rfd(SSL *s, int fd)
1656 BIO *wbio = SSL_get_wbio(s);
1658 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1659 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1660 BIO *bio = BIO_new(BIO_s_socket());
1663 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1666 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1667 SSL_set0_rbio(s, bio);
1670 SSL_set0_rbio(s, wbio);
1677 /* return length of latest Finished message we sent, copy to 'buf' */
1678 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1681 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1686 ret = sc->s3.tmp.finish_md_len;
1689 memcpy(buf, sc->s3.tmp.finish_md, count);
1693 /* return length of latest Finished message we expected, copy to 'buf' */
1694 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1697 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1702 ret = sc->s3.tmp.peer_finish_md_len;
1705 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1709 int SSL_get_verify_mode(const SSL *s)
1711 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1716 return sc->verify_mode;
1719 int SSL_get_verify_depth(const SSL *s)
1721 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1726 return X509_VERIFY_PARAM_get_depth(sc->param);
1729 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1730 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1735 return sc->verify_callback;
1738 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1740 return ctx->verify_mode;
1743 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1745 return X509_VERIFY_PARAM_get_depth(ctx->param);
1748 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1749 return ctx->default_verify_callback;
1752 void SSL_set_verify(SSL *s, int mode,
1753 int (*callback) (int ok, X509_STORE_CTX *ctx))
1755 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1760 sc->verify_mode = mode;
1761 if (callback != NULL)
1762 sc->verify_callback = callback;
1765 void SSL_set_verify_depth(SSL *s, int depth)
1767 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1772 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1775 void SSL_set_read_ahead(SSL *s, int yes)
1777 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1778 OSSL_PARAM options[2], *opts = options;
1783 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1785 *opts++ = OSSL_PARAM_construct_int(OSSL_LIBSSL_RECORD_LAYER_PARAM_READ_AHEAD,
1786 &sc->rlayer.read_ahead);
1787 *opts = OSSL_PARAM_construct_end();
1789 /* Ignore return value */
1790 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
1793 int SSL_get_read_ahead(const SSL *s)
1795 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1800 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1803 int SSL_pending(const SSL *s)
1805 size_t pending = s->method->ssl_pending(s);
1808 * SSL_pending cannot work properly if read-ahead is enabled
1809 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1810 * impossible to fix since SSL_pending cannot report errors that may be
1811 * observed while scanning the new data. (Note that SSL_pending() is
1812 * often used as a boolean value, so we'd better not return -1.)
1814 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1815 * we just return INT_MAX.
1817 return pending < INT_MAX ? (int)pending : INT_MAX;
1820 int SSL_has_pending(const SSL *s)
1823 * Similar to SSL_pending() but returns a 1 to indicate that we have
1824 * processed or unprocessed data available or 0 otherwise (as opposed to the
1825 * number of bytes available). Unlike SSL_pending() this will take into
1826 * account read_ahead data. A 1 return simply indicates that we have data.
1827 * That data may not result in any application data, or we may fail to parse
1828 * the records for some reason.
1830 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1832 /* Check buffered app data if any first */
1833 if (SSL_CONNECTION_IS_DTLS(sc)) {
1837 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1838 while ((item = pqueue_next(&iter)) != NULL) {
1840 if (rdata->length > 0)
1845 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1848 return RECORD_LAYER_read_pending(&sc->rlayer);
1851 X509 *SSL_get1_peer_certificate(const SSL *s)
1853 X509 *r = SSL_get0_peer_certificate(s);
1861 X509 *SSL_get0_peer_certificate(const SSL *s)
1863 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1868 if (sc->session == NULL)
1871 return sc->session->peer;
1874 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1877 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1882 if (sc->session == NULL)
1885 r = sc->session->peer_chain;
1888 * If we are a client, cert_chain includes the peer's own certificate; if
1889 * we are a server, it does not.
1896 * Now in theory, since the calling process own 't' it should be safe to
1897 * modify. We need to be able to read f without being hassled
1899 int SSL_copy_session_id(SSL *t, const SSL *f)
1902 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1903 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1904 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1906 if (tsc == NULL || fsc == NULL)
1909 /* Do we need to do SSL locking? */
1910 if (!SSL_set_session(t, SSL_get_session(f))) {
1915 * what if we are setup for one protocol version but want to talk another
1917 if (t->method != f->method) {
1918 t->method->ssl_deinit(t);
1919 t->method = f->method;
1920 if (t->method->ssl_init(t) == 0)
1924 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1925 ssl_cert_free(tsc->cert);
1926 tsc->cert = fsc->cert;
1927 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1934 /* Fix this so it checks all the valid key/cert options */
1935 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1937 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1938 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1941 if (ctx->cert->key->privatekey == NULL) {
1942 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1945 return X509_check_private_key
1946 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1949 /* Fix this function so that it takes an optional type parameter */
1950 int SSL_check_private_key(const SSL *ssl)
1952 const SSL_CONNECTION *sc;
1954 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1955 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1958 if (sc->cert->key->x509 == NULL) {
1959 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1962 if (sc->cert->key->privatekey == NULL) {
1963 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1966 return X509_check_private_key(sc->cert->key->x509,
1967 sc->cert->key->privatekey);
1970 int SSL_waiting_for_async(SSL *s)
1972 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1983 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1985 ASYNC_WAIT_CTX *ctx;
1986 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1991 if ((ctx = sc->waitctx) == NULL)
1993 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1996 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1997 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1999 ASYNC_WAIT_CTX *ctx;
2000 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2005 if ((ctx = sc->waitctx) == NULL)
2007 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
2011 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
2013 ctx->async_cb = callback;
2017 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
2019 ctx->async_cb_arg = arg;
2023 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
2025 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2030 sc->async_cb = callback;
2034 int SSL_set_async_callback_arg(SSL *s, void *arg)
2036 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2041 sc->async_cb_arg = arg;
2045 int SSL_get_async_status(SSL *s, int *status)
2047 ASYNC_WAIT_CTX *ctx;
2048 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2053 if ((ctx = sc->waitctx) == NULL)
2055 *status = ASYNC_WAIT_CTX_get_status(ctx);
2059 int SSL_accept(SSL *s)
2061 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2062 #ifndef OPENSSL_NO_QUIC
2063 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2066 return s->method->ssl_accept(s);
2072 if (sc->handshake_func == NULL) {
2073 /* Not properly initialized yet */
2074 SSL_set_accept_state(s);
2077 return SSL_do_handshake(s);
2080 int SSL_connect(SSL *s)
2082 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2083 #ifndef OPENSSL_NO_QUIC
2084 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2087 return s->method->ssl_connect(s);
2093 if (sc->handshake_func == NULL) {
2094 /* Not properly initialized yet */
2095 SSL_set_connect_state(s);
2098 return SSL_do_handshake(s);
2101 long SSL_get_default_timeout(const SSL *s)
2103 return (long int)ossl_time2seconds(s->method->get_timeout());
2106 static int ssl_async_wait_ctx_cb(void *arg)
2108 SSL *s = (SSL *)arg;
2109 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2114 return sc->async_cb(s, sc->async_cb_arg);
2117 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2118 int (*func) (void *))
2121 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2126 if (sc->waitctx == NULL) {
2127 sc->waitctx = ASYNC_WAIT_CTX_new();
2128 if (sc->waitctx == NULL)
2130 if (sc->async_cb != NULL
2131 && !ASYNC_WAIT_CTX_set_callback
2132 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2136 sc->rwstate = SSL_NOTHING;
2137 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2138 sizeof(struct ssl_async_args))) {
2140 sc->rwstate = SSL_NOTHING;
2141 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2144 sc->rwstate = SSL_ASYNC_PAUSED;
2147 sc->rwstate = SSL_ASYNC_NO_JOBS;
2153 sc->rwstate = SSL_NOTHING;
2154 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2155 /* Shouldn't happen */
2160 static int ssl_io_intern(void *vargs)
2162 struct ssl_async_args *args;
2168 args = (struct ssl_async_args *)vargs;
2172 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2175 switch (args->type) {
2177 return args->f.func_read(s, buf, num, &sc->asyncrw);
2179 return args->f.func_write(s, buf, num, &sc->asyncrw);
2181 return args->f.func_other(s);
2186 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2188 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2189 #ifndef OPENSSL_NO_QUIC
2190 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2193 return s->method->ssl_read(s, buf, num, readbytes);
2199 if (sc->handshake_func == NULL) {
2200 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2204 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2205 sc->rwstate = SSL_NOTHING;
2209 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2210 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2211 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2215 * If we are a client and haven't received the ServerHello etc then we
2218 ossl_statem_check_finish_init(sc, 0);
2220 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2221 struct ssl_async_args args;
2227 args.type = READFUNC;
2228 args.f.func_read = s->method->ssl_read;
2230 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2231 *readbytes = sc->asyncrw;
2234 return s->method->ssl_read(s, buf, num, readbytes);
2238 int SSL_read(SSL *s, void *buf, int num)
2244 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2248 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2251 * The cast is safe here because ret should be <= INT_MAX because num is
2255 ret = (int)readbytes;
2260 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2262 int ret = ssl_read_internal(s, buf, num, readbytes);
2269 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2272 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2274 /* TODO(QUIC): This will need special handling for QUIC */
2279 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2280 return SSL_READ_EARLY_DATA_ERROR;
2283 switch (sc->early_data_state) {
2284 case SSL_EARLY_DATA_NONE:
2285 if (!SSL_in_before(s)) {
2286 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2287 return SSL_READ_EARLY_DATA_ERROR;
2291 case SSL_EARLY_DATA_ACCEPT_RETRY:
2292 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2293 ret = SSL_accept(s);
2296 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2297 return SSL_READ_EARLY_DATA_ERROR;
2301 case SSL_EARLY_DATA_READ_RETRY:
2302 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2303 sc->early_data_state = SSL_EARLY_DATA_READING;
2304 ret = SSL_read_ex(s, buf, num, readbytes);
2306 * State machine will update early_data_state to
2307 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2310 if (ret > 0 || (ret <= 0 && sc->early_data_state
2311 != SSL_EARLY_DATA_FINISHED_READING)) {
2312 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2313 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2314 : SSL_READ_EARLY_DATA_ERROR;
2317 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2320 return SSL_READ_EARLY_DATA_FINISH;
2323 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2324 return SSL_READ_EARLY_DATA_ERROR;
2328 int SSL_get_early_data_status(const SSL *s)
2330 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2332 /* TODO(QUIC): This will need special handling for QUIC */
2336 return sc->ext.early_data;
2339 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2341 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2342 #ifndef OPENSSL_NO_QUIC
2343 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2346 return s->method->ssl_peek(s, buf, num, readbytes);
2352 if (sc->handshake_func == NULL) {
2353 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2357 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2360 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2361 struct ssl_async_args args;
2367 args.type = READFUNC;
2368 args.f.func_read = s->method->ssl_peek;
2370 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2371 *readbytes = sc->asyncrw;
2374 return s->method->ssl_peek(s, buf, num, readbytes);
2378 int SSL_peek(SSL *s, void *buf, int num)
2384 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2388 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2391 * The cast is safe here because ret should be <= INT_MAX because num is
2395 ret = (int)readbytes;
2401 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2403 int ret = ssl_peek_internal(s, buf, num, readbytes);
2410 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2412 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2413 #ifndef OPENSSL_NO_QUIC
2414 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
2417 return s->method->ssl_write(s, buf, num, written);
2423 if (sc->handshake_func == NULL) {
2424 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2428 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2429 sc->rwstate = SSL_NOTHING;
2430 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2434 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2435 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2436 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2437 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2440 /* If we are a client and haven't sent the Finished we better do that */
2441 ossl_statem_check_finish_init(sc, 1);
2443 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2445 struct ssl_async_args args;
2448 args.buf = (void *)buf;
2450 args.type = WRITEFUNC;
2451 args.f.func_write = s->method->ssl_write;
2453 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2454 *written = sc->asyncrw;
2457 return s->method->ssl_write(s, buf, num, written);
2461 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2464 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2469 if (sc->handshake_func == NULL) {
2470 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2474 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2475 sc->rwstate = SSL_NOTHING;
2476 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2480 if (!BIO_get_ktls_send(sc->wbio)) {
2481 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2485 /* If we have an alert to send, lets send it */
2486 if (sc->s3.alert_dispatch > 0) {
2487 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2489 /* SSLfatal() already called if appropriate */
2492 /* if it went, fall through and send more stuff */
2495 sc->rwstate = SSL_WRITING;
2496 if (BIO_flush(sc->wbio) <= 0) {
2497 if (!BIO_should_retry(sc->wbio)) {
2498 sc->rwstate = SSL_NOTHING;
2501 set_sys_error(EAGAIN);
2507 #ifdef OPENSSL_NO_KTLS
2508 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2509 "can't call ktls_sendfile(), ktls disabled");
2512 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2514 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2515 if ((get_last_sys_error() == EAGAIN) ||
2516 (get_last_sys_error() == EINTR) ||
2517 (get_last_sys_error() == EBUSY))
2518 BIO_set_retry_write(sc->wbio);
2521 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2524 sc->rwstate = SSL_NOTHING;
2529 int SSL_write(SSL *s, const void *buf, int num)
2535 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2539 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2542 * The cast is safe here because ret should be <= INT_MAX because num is
2551 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2553 int ret = ssl_write_internal(s, buf, num, written);
2560 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2562 int ret, early_data_state;
2564 uint32_t partialwrite;
2565 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2567 /* TODO(QUIC): This will need special handling for QUIC */
2571 switch (sc->early_data_state) {
2572 case SSL_EARLY_DATA_NONE:
2574 || !SSL_in_before(s)
2575 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2576 && (sc->psk_use_session_cb == NULL))) {
2577 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2582 case SSL_EARLY_DATA_CONNECT_RETRY:
2583 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2584 ret = SSL_connect(s);
2587 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2592 case SSL_EARLY_DATA_WRITE_RETRY:
2593 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2595 * We disable partial write for early data because we don't keep track
2596 * of how many bytes we've written between the SSL_write_ex() call and
2597 * the flush if the flush needs to be retried)
2599 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2600 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2601 ret = SSL_write_ex(s, buf, num, &writtmp);
2602 sc->mode |= partialwrite;
2604 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2607 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2610 case SSL_EARLY_DATA_WRITE_FLUSH:
2611 /* The buffering BIO is still in place so we need to flush it */
2612 if (statem_flush(sc) != 1)
2615 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2618 case SSL_EARLY_DATA_FINISHED_READING:
2619 case SSL_EARLY_DATA_READ_RETRY:
2620 early_data_state = sc->early_data_state;
2621 /* We are a server writing to an unauthenticated client */
2622 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2623 ret = SSL_write_ex(s, buf, num, written);
2624 /* The buffering BIO is still in place */
2626 (void)BIO_flush(sc->wbio);
2627 sc->early_data_state = early_data_state;
2631 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2636 int SSL_shutdown(SSL *s)
2639 * Note that this function behaves differently from what one might
2640 * expect. Return values are 0 for no success (yet), 1 for success; but
2641 * calling it once is usually not enough, even if blocking I/O is used
2642 * (see ssl3_shutdown).
2644 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2649 if (sc->handshake_func == NULL) {
2650 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2654 if (!SSL_in_init(s)) {
2655 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2656 struct ssl_async_args args;
2658 memset(&args, 0, sizeof(args));
2660 args.type = OTHERFUNC;
2661 args.f.func_other = s->method->ssl_shutdown;
2663 return ssl_start_async_job(s, &args, ssl_io_intern);
2665 return s->method->ssl_shutdown(s);
2668 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2673 int SSL_key_update(SSL *s, int updatetype)
2675 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2680 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2681 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2685 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2686 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2687 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2691 if (!SSL_is_init_finished(s)) {
2692 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2696 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2697 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2701 ossl_statem_set_in_init(sc, 1);
2702 sc->key_update = updatetype;
2706 int SSL_get_key_update_type(const SSL *s)
2708 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2713 return sc->key_update;
2717 * Can we accept a renegotiation request? If yes, set the flag and
2718 * return 1 if yes. If not, raise error and return 0.
2720 static int can_renegotiate(const SSL_CONNECTION *sc)
2722 if (SSL_CONNECTION_IS_TLS13(sc)) {
2723 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2727 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2728 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2735 int SSL_renegotiate(SSL *s)
2737 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2742 if (!can_renegotiate(sc))
2745 sc->renegotiate = 1;
2746 sc->new_session = 1;
2747 return s->method->ssl_renegotiate(s);
2750 int SSL_renegotiate_abbreviated(SSL *s)
2752 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2757 if (!can_renegotiate(sc))
2760 sc->renegotiate = 1;
2761 sc->new_session = 0;
2762 return s->method->ssl_renegotiate(s);
2765 int SSL_renegotiate_pending(const SSL *s)
2767 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2773 * becomes true when negotiation is requested; false again once a
2774 * handshake has finished
2776 return (sc->renegotiate != 0);
2779 int SSL_new_session_ticket(SSL *s)
2781 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2786 /* If we are in init because we're sending tickets, okay to send more. */
2787 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2788 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2789 || !SSL_CONNECTION_IS_TLS13(sc))
2791 sc->ext.extra_tickets_expected++;
2792 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2793 ossl_statem_set_in_init(sc, 1);
2797 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2800 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2802 /* TODO(QUIC): Special handling for some ctrls will be needed */
2807 case SSL_CTRL_GET_READ_AHEAD:
2808 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2809 case SSL_CTRL_SET_READ_AHEAD:
2810 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2811 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2814 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2815 sc->msg_callback_arg = parg;
2820 OSSL_PARAM options[2], *opts = options;
2824 *opts++ = OSSL_PARAM_construct_uint32(OSSL_LIBSSL_RECORD_LAYER_PARAM_MODE,
2826 *opts = OSSL_PARAM_construct_end();
2828 /* Ignore return value */
2829 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
2833 case SSL_CTRL_CLEAR_MODE:
2834 return (sc->mode &= ~larg);
2835 case SSL_CTRL_GET_MAX_CERT_LIST:
2836 return (long)sc->max_cert_list;
2837 case SSL_CTRL_SET_MAX_CERT_LIST:
2840 l = (long)sc->max_cert_list;
2841 sc->max_cert_list = (size_t)larg;
2843 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2844 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2846 #ifndef OPENSSL_NO_KTLS
2847 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2849 #endif /* OPENSSL_NO_KTLS */
2850 sc->max_send_fragment = larg;
2851 if (sc->max_send_fragment < sc->split_send_fragment)
2852 sc->split_send_fragment = sc->max_send_fragment;
2853 sc->rlayer.wrlmethod->set_max_frag_len(sc->rlayer.wrl, larg);
2855 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2856 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2858 sc->split_send_fragment = larg;
2860 case SSL_CTRL_SET_MAX_PIPELINES:
2861 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2863 sc->max_pipelines = larg;
2864 if (sc->rlayer.rrlmethod->set_max_pipelines != NULL)
2865 sc->rlayer.rrlmethod->set_max_pipelines(sc->rlayer.rrl, (size_t)larg);
2867 case SSL_CTRL_GET_RI_SUPPORT:
2868 return sc->s3.send_connection_binding;
2869 case SSL_CTRL_SET_RETRY_VERIFY:
2870 sc->rwstate = SSL_RETRY_VERIFY;
2872 case SSL_CTRL_CERT_FLAGS:
2873 return (sc->cert->cert_flags |= larg);
2874 case SSL_CTRL_CLEAR_CERT_FLAGS:
2875 return (sc->cert->cert_flags &= ~larg);
2877 case SSL_CTRL_GET_RAW_CIPHERLIST:
2879 if (sc->s3.tmp.ciphers_raw == NULL)
2881 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2882 return (int)sc->s3.tmp.ciphers_rawlen;
2884 return TLS_CIPHER_LEN;
2886 case SSL_CTRL_GET_EXTMS_SUPPORT:
2887 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2889 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2893 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2894 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2895 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2896 &sc->min_proto_version);
2897 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2898 return sc->min_proto_version;
2899 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2900 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2901 && ssl_set_version_bound(s->defltmeth->version, (int)larg,
2902 &sc->max_proto_version);
2903 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2904 return sc->max_proto_version;
2906 return s->method->ssl_ctrl(s, cmd, larg, parg);
2910 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2912 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2918 case SSL_CTRL_SET_MSG_CALLBACK:
2919 sc->msg_callback = (void (*)
2920 (int write_p, int version, int content_type,
2921 const void *buf, size_t len, SSL *ssl,
2926 return s->method->ssl_callback_ctrl(s, cmd, fp);
2930 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2932 return ctx->sessions;
2935 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2939 if (ssl_tsan_lock(ctx)) {
2940 res = tsan_load(stat);
2941 ssl_tsan_unlock(ctx);
2946 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2949 /* For some cases with ctx == NULL perform syntax checks */
2952 case SSL_CTRL_SET_GROUPS_LIST:
2953 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2954 case SSL_CTRL_SET_SIGALGS_LIST:
2955 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2956 return tls1_set_sigalgs_list(NULL, parg, 0);
2963 case SSL_CTRL_GET_READ_AHEAD:
2964 return ctx->read_ahead;
2965 case SSL_CTRL_SET_READ_AHEAD:
2966 l = ctx->read_ahead;
2967 ctx->read_ahead = larg;
2970 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2971 ctx->msg_callback_arg = parg;
2974 case SSL_CTRL_GET_MAX_CERT_LIST:
2975 return (long)ctx->max_cert_list;
2976 case SSL_CTRL_SET_MAX_CERT_LIST:
2979 l = (long)ctx->max_cert_list;
2980 ctx->max_cert_list = (size_t)larg;
2983 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2986 l = (long)ctx->session_cache_size;
2987 ctx->session_cache_size = (size_t)larg;
2989 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2990 return (long)ctx->session_cache_size;
2991 case SSL_CTRL_SET_SESS_CACHE_MODE:
2992 l = ctx->session_cache_mode;
2993 ctx->session_cache_mode = larg;
2995 case SSL_CTRL_GET_SESS_CACHE_MODE:
2996 return ctx->session_cache_mode;
2998 case SSL_CTRL_SESS_NUMBER:
2999 return lh_SSL_SESSION_num_items(ctx->sessions);
3000 case SSL_CTRL_SESS_CONNECT:
3001 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
3002 case SSL_CTRL_SESS_CONNECT_GOOD:
3003 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
3004 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
3005 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
3006 case SSL_CTRL_SESS_ACCEPT:
3007 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
3008 case SSL_CTRL_SESS_ACCEPT_GOOD:
3009 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
3010 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
3011 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
3012 case SSL_CTRL_SESS_HIT:
3013 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
3014 case SSL_CTRL_SESS_CB_HIT:
3015 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
3016 case SSL_CTRL_SESS_MISSES:
3017 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
3018 case SSL_CTRL_SESS_TIMEOUTS:
3019 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
3020 case SSL_CTRL_SESS_CACHE_FULL:
3021 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
3023 return (ctx->mode |= larg);
3024 case SSL_CTRL_CLEAR_MODE:
3025 return (ctx->mode &= ~larg);
3026 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
3027 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
3029 ctx->max_send_fragment = larg;
3030 if (ctx->max_send_fragment < ctx->split_send_fragment)
3031 ctx->split_send_fragment = ctx->max_send_fragment;
3033 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
3034 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
3036 ctx->split_send_fragment = larg;
3038 case SSL_CTRL_SET_MAX_PIPELINES:
3039 if (larg < 1 || larg > SSL_MAX_PIPELINES)
3041 ctx->max_pipelines = larg;
3043 case SSL_CTRL_CERT_FLAGS:
3044 return (ctx->cert->cert_flags |= larg);
3045 case SSL_CTRL_CLEAR_CERT_FLAGS:
3046 return (ctx->cert->cert_flags &= ~larg);
3047 case SSL_CTRL_SET_MIN_PROTO_VERSION:
3048 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
3049 && ssl_set_version_bound(ctx->method->version, (int)larg,
3050 &ctx->min_proto_version);
3051 case SSL_CTRL_GET_MIN_PROTO_VERSION:
3052 return ctx->min_proto_version;
3053 case SSL_CTRL_SET_MAX_PROTO_VERSION:
3054 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
3055 && ssl_set_version_bound(ctx->method->version, (int)larg,
3056 &ctx->max_proto_version);
3057 case SSL_CTRL_GET_MAX_PROTO_VERSION:
3058 return ctx->max_proto_version;
3060 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
3064 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
3067 case SSL_CTRL_SET_MSG_CALLBACK:
3068 ctx->msg_callback = (void (*)
3069 (int write_p, int version, int content_type,
3070 const void *buf, size_t len, SSL *ssl,
3075 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3079 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3088 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3089 const SSL_CIPHER *const *bp)
3091 if ((*ap)->id > (*bp)->id)
3093 if ((*ap)->id < (*bp)->id)
3099 * return a STACK of the ciphers available for the SSL and in order of
3102 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3104 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3107 if (sc->cipher_list != NULL) {
3108 return sc->cipher_list;
3109 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3110 return s->ctx->cipher_list;
3116 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3118 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3120 if (sc == NULL || !sc->server)
3122 return sc->peer_ciphers;
3125 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3127 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3129 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3134 ciphers = SSL_get_ciphers(s);
3137 if (!ssl_set_client_disabled(sc))
3139 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3140 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3141 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3143 sk = sk_SSL_CIPHER_new_null();
3146 if (!sk_SSL_CIPHER_push(sk, c)) {
3147 sk_SSL_CIPHER_free(sk);
3155 /** return a STACK of the ciphers available for the SSL and in order of
3157 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3160 if (s->cipher_list_by_id != NULL)
3161 return s->cipher_list_by_id;
3162 else if (s->ssl.ctx != NULL
3163 && s->ssl.ctx->cipher_list_by_id != NULL)
3164 return s->ssl.ctx->cipher_list_by_id;
3169 /** The old interface to get the same thing as SSL_get_ciphers() */
3170 const char *SSL_get_cipher_list(const SSL *s, int n)
3172 const SSL_CIPHER *c;
3173 STACK_OF(SSL_CIPHER) *sk;
3177 sk = SSL_get_ciphers(s);
3178 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3180 c = sk_SSL_CIPHER_value(sk, n);
3186 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3188 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3191 return ctx->cipher_list;
3196 * Distinguish between ciphers controlled by set_ciphersuite() and
3197 * set_cipher_list() when counting.
3199 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3202 const SSL_CIPHER *c;
3206 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3207 c = sk_SSL_CIPHER_value(sk, i);
3208 if (c->min_tls >= TLS1_3_VERSION)
3215 /** specify the ciphers to be used by default by the SSL_CTX */
3216 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3218 STACK_OF(SSL_CIPHER) *sk;
3220 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3221 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3224 * ssl_create_cipher_list may return an empty stack if it was unable to
3225 * find a cipher matching the given rule string (for example if the rule
3226 * string specifies a cipher which has been disabled). This is not an
3227 * error as far as ssl_create_cipher_list is concerned, and hence
3228 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3232 else if (cipher_list_tls12_num(sk) == 0) {
3233 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3239 /** specify the ciphers to be used by the SSL */
3240 int SSL_set_cipher_list(SSL *s, const char *str)
3242 STACK_OF(SSL_CIPHER) *sk;
3243 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3248 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3249 &sc->cipher_list, &sc->cipher_list_by_id, str,
3251 /* see comment in SSL_CTX_set_cipher_list */
3254 else if (cipher_list_tls12_num(sk) == 0) {
3255 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3261 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3264 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3265 const SSL_CIPHER *c;
3267 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3273 || sc->peer_ciphers == NULL
3278 clntsk = sc->peer_ciphers;
3279 srvrsk = SSL_get_ciphers(s);
3280 if (clntsk == NULL || srvrsk == NULL)
3283 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3286 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3289 c = sk_SSL_CIPHER_value(clntsk, i);
3290 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3293 n = strlen(c->name);
3310 * Return the requested servername (SNI) value. Note that the behaviour varies
3312 * - whether this is called by the client or the server,
3313 * - if we are before or during/after the handshake,
3314 * - if a resumption or normal handshake is being attempted/has occurred
3315 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3317 * Note that only the host_name type is defined (RFC 3546).
3319 const char *SSL_get_servername(const SSL *s, const int type)
3321 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3328 * If we don't know if we are the client or the server yet then we assume
3331 server = sc->handshake_func == NULL ? 0 : sc->server;
3333 if (type != TLSEXT_NAMETYPE_host_name)
3339 * In TLSv1.3 on the server SNI is not associated with the session
3340 * but in TLSv1.2 or below it is.
3342 * Before the handshake:
3345 * During/after the handshake (TLSv1.2 or below resumption occurred):
3346 * - If a servername was accepted by the server in the original
3347 * handshake then it will return that servername, or NULL otherwise.
3349 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3350 * - The function will return the servername requested by the client in
3351 * this handshake or NULL if none was requested.
3353 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3354 return sc->session->ext.hostname;
3359 * Before the handshake:
3360 * - If a servername has been set via a call to
3361 * SSL_set_tlsext_host_name() then it will return that servername
3362 * - If one has not been set, but a TLSv1.2 resumption is being
3363 * attempted and the session from the original handshake had a
3364 * servername accepted by the server then it will return that
3366 * - Otherwise it returns NULL
3368 * During/after the handshake (TLSv1.2 or below resumption occurred):
3369 * - If the session from the original handshake had a servername accepted
3370 * by the server then it will return that servername.
3371 * - Otherwise it returns the servername set via
3372 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3374 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3375 * - It will return the servername set via SSL_set_tlsext_host_name()
3376 * (or NULL if it was not called).
3378 if (SSL_in_before(s)) {
3379 if (sc->ext.hostname == NULL
3380 && sc->session != NULL
3381 && sc->session->ssl_version != TLS1_3_VERSION)
3382 return sc->session->ext.hostname;
3384 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3385 && sc->session->ext.hostname != NULL)
3386 return sc->session->ext.hostname;
3390 return sc->ext.hostname;
3393 int SSL_get_servername_type(const SSL *s)
3395 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3396 return TLSEXT_NAMETYPE_host_name;
3401 * SSL_select_next_proto implements the standard protocol selection. It is
3402 * expected that this function is called from the callback set by
3403 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3404 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3405 * not included in the length. A byte string of length 0 is invalid. No byte
3406 * string may be truncated. The current, but experimental algorithm for
3407 * selecting the protocol is: 1) If the server doesn't support NPN then this
3408 * is indicated to the callback. In this case, the client application has to
3409 * abort the connection or have a default application level protocol. 2) If
3410 * the server supports NPN, but advertises an empty list then the client
3411 * selects the first protocol in its list, but indicates via the API that this
3412 * fallback case was enacted. 3) Otherwise, the client finds the first
3413 * protocol in the server's list that it supports and selects this protocol.
3414 * This is because it's assumed that the server has better information about
3415 * which protocol a client should use. 4) If the client doesn't support any
3416 * of the server's advertised protocols, then this is treated the same as
3417 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3418 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3420 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3421 const unsigned char *server,
3422 unsigned int server_len,
3423 const unsigned char *client, unsigned int client_len)
3426 const unsigned char *result;
3427 int status = OPENSSL_NPN_UNSUPPORTED;
3430 * For each protocol in server preference order, see if we support it.
3432 for (i = 0; i < server_len;) {
3433 for (j = 0; j < client_len;) {
3434 if (server[i] == client[j] &&
3435 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3436 /* We found a match */
3437 result = &server[i];
3438 status = OPENSSL_NPN_NEGOTIATED;
3448 /* There's no overlap between our protocols and the server's list. */
3450 status = OPENSSL_NPN_NO_OVERLAP;
3453 *out = (unsigned char *)result + 1;
3454 *outlen = result[0];
3458 #ifndef OPENSSL_NO_NEXTPROTONEG
3460 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3461 * client's requested protocol for this connection and returns 0. If the
3462 * client didn't request any protocol, then *data is set to NULL. Note that
3463 * the client can request any protocol it chooses. The value returned from
3464 * this function need not be a member of the list of supported protocols
3465 * provided by the callback.
3467 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3470 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3473 /* We have no other way to indicate error */
3479 *data = sc->ext.npn;
3480 if (*data == NULL) {
3483 *len = (unsigned int)sc->ext.npn_len;
3488 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3489 * a TLS server needs a list of supported protocols for Next Protocol
3490 * Negotiation. The returned list must be in wire format. The list is
3491 * returned by setting |out| to point to it and |outlen| to its length. This
3492 * memory will not be modified, but one should assume that the SSL* keeps a
3493 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3494 * wishes to advertise. Otherwise, no such extension will be included in the
3497 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3498 SSL_CTX_npn_advertised_cb_func cb,
3501 ctx->ext.npn_advertised_cb = cb;
3502 ctx->ext.npn_advertised_cb_arg = arg;
3506 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3507 * client needs to select a protocol from the server's provided list. |out|
3508 * must be set to point to the selected protocol (which may be within |in|).
3509 * The length of the protocol name must be written into |outlen|. The
3510 * server's advertised protocols are provided in |in| and |inlen|. The
3511 * callback can assume that |in| is syntactically valid. The client must
3512 * select a protocol. It is fatal to the connection if this callback returns
3513 * a value other than SSL_TLSEXT_ERR_OK.
3515 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3516 SSL_CTX_npn_select_cb_func cb,
3519 ctx->ext.npn_select_cb = cb;
3520 ctx->ext.npn_select_cb_arg = arg;
3524 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3528 if (protos_len < 2 || protos == NULL)
3531 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3532 if (protos[idx] == 0)
3535 return idx == protos_len;
3538 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3539 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3540 * length-prefixed strings). Returns 0 on success.
3542 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3543 unsigned int protos_len)
3545 unsigned char *alpn;
3547 if (protos_len == 0 || protos == NULL) {
3548 OPENSSL_free(ctx->ext.alpn);
3549 ctx->ext.alpn = NULL;
3550 ctx->ext.alpn_len = 0;
3553 /* Not valid per RFC */
3554 if (!alpn_value_ok(protos, protos_len))
3557 alpn = OPENSSL_memdup(protos, protos_len);
3560 OPENSSL_free(ctx->ext.alpn);
3561 ctx->ext.alpn = alpn;
3562 ctx->ext.alpn_len = protos_len;
3568 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3569 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3570 * length-prefixed strings). Returns 0 on success.
3572 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3573 unsigned int protos_len)
3575 unsigned char *alpn;
3576 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3581 if (protos_len == 0 || protos == NULL) {
3582 OPENSSL_free(sc->ext.alpn);
3583 sc->ext.alpn = NULL;
3584 sc->ext.alpn_len = 0;
3587 /* Not valid per RFC */
3588 if (!alpn_value_ok(protos, protos_len))
3591 alpn = OPENSSL_memdup(protos, protos_len);
3594 OPENSSL_free(sc->ext.alpn);
3595 sc->ext.alpn = alpn;
3596 sc->ext.alpn_len = protos_len;
3602 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3603 * called during ClientHello processing in order to select an ALPN protocol
3604 * from the client's list of offered protocols.
3606 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3607 SSL_CTX_alpn_select_cb_func cb,
3610 ctx->ext.alpn_select_cb = cb;
3611 ctx->ext.alpn_select_cb_arg = arg;
3615 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3616 * On return it sets |*data| to point to |*len| bytes of protocol name
3617 * (not including the leading length-prefix byte). If the server didn't
3618 * respond with a negotiated protocol then |*len| will be zero.
3620 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3623 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3626 /* We have no other way to indicate error */
3632 *data = sc->s3.alpn_selected;
3636 *len = (unsigned int)sc->s3.alpn_selected_len;
3639 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3640 const char *label, size_t llen,
3641 const unsigned char *context, size_t contextlen,
3644 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3649 if (sc->session == NULL
3650 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3653 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3655 contextlen, use_context);
3658 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3659 const char *label, size_t llen,
3660 const unsigned char *context,
3663 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3668 if (sc->version != TLS1_3_VERSION)
3671 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3672 context, contextlen);
3675 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3677 const unsigned char *session_id = a->session_id;
3679 unsigned char tmp_storage[4];
3681 if (a->session_id_length < sizeof(tmp_storage)) {
3682 memset(tmp_storage, 0, sizeof(tmp_storage));
3683 memcpy(tmp_storage, a->session_id, a->session_id_length);
3684 session_id = tmp_storage;
3688 ((unsigned long)session_id[0]) |
3689 ((unsigned long)session_id[1] << 8L) |
3690 ((unsigned long)session_id[2] << 16L) |
3691 ((unsigned long)session_id[3] << 24L);
3696 * NB: If this function (or indeed the hash function which uses a sort of
3697 * coarser function than this one) is changed, ensure
3698 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3699 * being able to construct an SSL_SESSION that will collide with any existing
3700 * session with a matching session ID.
3702 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3704 if (a->ssl_version != b->ssl_version)
3706 if (a->session_id_length != b->session_id_length)
3708 return memcmp(a->session_id, b->session_id, a->session_id_length);
3712 * These wrapper functions should remain rather than redeclaring
3713 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3714 * variable. The reason is that the functions aren't static, they're exposed
3718 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3719 const SSL_METHOD *meth)
3721 SSL_CTX *ret = NULL;
3722 #ifndef OPENSSL_NO_COMP_ALG
3727 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3731 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3734 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3735 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3738 ret = OPENSSL_zalloc(sizeof(*ret));
3742 /* Init the reference counting before any call to SSL_CTX_free */
3743 ret->references = 1;
3744 ret->lock = CRYPTO_THREAD_lock_new();
3745 if (ret->lock == NULL) {
3746 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3750 #ifdef TSAN_REQUIRES_LOCKING
3751 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3752 if (ret->tsan_lock == NULL) {
3753 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3758 ret->libctx = libctx;
3759 if (propq != NULL) {
3760 ret->propq = OPENSSL_strdup(propq);
3761 if (ret->propq == NULL)
3766 ret->min_proto_version = 0;
3767 ret->max_proto_version = 0;
3768 ret->mode = SSL_MODE_AUTO_RETRY;
3769 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3770 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3771 /* We take the system default. */
3772 ret->session_timeout = meth->get_timeout();
3773 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3774 ret->verify_mode = SSL_VERIFY_NONE;
3775 if ((ret->cert = ssl_cert_new()) == NULL) {
3776 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3780 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3781 if (ret->sessions == NULL) {
3782 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3785 ret->cert_store = X509_STORE_new();
3786 if (ret->cert_store == NULL) {
3787 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3790 #ifndef OPENSSL_NO_CT
3791 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3792 if (ret->ctlog_store == NULL) {
3793 ERR_raise(ERR_LIB_SSL, ERR_R_CT_LIB);
3798 /* initialize cipher/digest methods table */
3799 if (!ssl_load_ciphers(ret))
3801 /* initialise sig algs */
3802 if (!ssl_setup_sig_algs(ret))
3805 if (!ssl_load_groups(ret))
3808 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites())) {
3809 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3813 if (!ssl_create_cipher_list(ret,
3814 ret->tls13_ciphersuites,
3815 &ret->cipher_list, &ret->cipher_list_by_id,
3816 OSSL_default_cipher_list(), ret->cert)
3817 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3818 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3822 ret->param = X509_VERIFY_PARAM_new();
3823 if (ret->param == NULL) {
3824 ERR_raise(ERR_LIB_SSL, ERR_R_X509_LIB);
3829 * If these aren't available from the provider we'll get NULL returns.
3830 * That's fine but will cause errors later if SSLv3 is negotiated
3832 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3833 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3835 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL) {
3836 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3840 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL) {
3841 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3845 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data)) {
3846 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
3850 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3853 /* No compression for DTLS */
3854 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3855 ret->comp_methods = SSL_COMP_get_compression_methods();
3857 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3858 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3860 /* Setup RFC5077 ticket keys */
3861 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3862 sizeof(ret->ext.tick_key_name), 0) <= 0)
3863 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3864 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3865 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3866 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3867 ret->options |= SSL_OP_NO_TICKET;
3869 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3870 sizeof(ret->ext.cookie_hmac_key), 0) <= 0) {
3871 ERR_raise(ERR_LIB_SSL, ERR_R_RAND_LIB);
3875 #ifndef OPENSSL_NO_SRP
3876 if (!ssl_ctx_srp_ctx_init_intern(ret)) {
3877 ERR_raise(ERR_LIB_SSL, ERR_R_SSL_LIB);
3881 #ifndef OPENSSL_NO_ENGINE
3882 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3883 # define eng_strx(x) #x
3884 # define eng_str(x) eng_strx(x)
3885 /* Use specific client engine automatically... ignore errors */
3888 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3891 ENGINE_load_builtin_engines();
3892 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3894 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3900 #ifndef OPENSSL_NO_COMP_ALG
3902 * Set the default order: brotli, zlib, zstd
3903 * Including only those enabled algorithms
3905 memset(ret->cert_comp_prefs, 0, sizeof(ret->cert_comp_prefs));
3907 if (ossl_comp_has_alg(TLSEXT_comp_cert_brotli))
3908 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_brotli;
3909 if (ossl_comp_has_alg(TLSEXT_comp_cert_zlib))
3910 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zlib;
3911 if (ossl_comp_has_alg(TLSEXT_comp_cert_zstd))
3912 ret->cert_comp_prefs[i++] = TLSEXT_comp_cert_zstd;
3915 * Disable compression by default to prevent CRIME. Applications can
3916 * re-enable compression by configuring
3917 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3918 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3919 * middlebox compatibility by default. This may be disabled by default in
3920 * a later OpenSSL version.
3922 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3924 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3927 * We cannot usefully set a default max_early_data here (which gets
3928 * propagated in SSL_new(), for the following reason: setting the
3929 * SSL field causes tls_construct_stoc_early_data() to tell the
3930 * client that early data will be accepted when constructing a TLS 1.3
3931 * session ticket, and the client will accordingly send us early data
3932 * when using that ticket (if the client has early data to send).
3933 * However, in order for the early data to actually be consumed by
3934 * the application, the application must also have calls to
3935 * SSL_read_early_data(); otherwise we'll just skip past the early data
3936 * and ignore it. So, since the application must add calls to
3937 * SSL_read_early_data(), we also require them to add
3938 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3939 * eliminating the bandwidth-wasting early data in the case described
3942 ret->max_early_data = 0;
3945 * Default recv_max_early_data is a fully loaded single record. Could be
3946 * split across multiple records in practice. We set this differently to
3947 * max_early_data so that, in the default case, we do not advertise any
3948 * support for early_data, but if a client were to send us some (e.g.
3949 * because of an old, stale ticket) then we will tolerate it and skip over
3952 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3954 /* By default we send two session tickets automatically in TLSv1.3 */
3955 ret->num_tickets = 2;
3957 ssl_ctx_system_config(ret);
3965 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3967 return SSL_CTX_new_ex(NULL, NULL, meth);
3970 int SSL_CTX_up_ref(SSL_CTX *ctx)
3974 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3977 REF_PRINT_COUNT("SSL_CTX", ctx);
3978 REF_ASSERT_ISNT(i < 2);
3979 return ((i > 1) ? 1 : 0);
3982 void SSL_CTX_free(SSL_CTX *a)
3990 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3991 REF_PRINT_COUNT("SSL_CTX", a);
3994 REF_ASSERT_ISNT(i < 0);
3996 X509_VERIFY_PARAM_free(a->param);
3997 dane_ctx_final(&a->dane);
4000 * Free internal session cache. However: the remove_cb() may reference
4001 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
4002 * after the sessions were flushed.
4003 * As the ex_data handling routines might also touch the session cache,
4004 * the most secure solution seems to be: empty (flush) the cache, then
4005 * free ex_data, then finally free the cache.
4006 * (See ticket [openssl.org #212].)
4008 if (a->sessions != NULL)
4009 SSL_CTX_flush_sessions(a, 0);
4011 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
4012 lh_SSL_SESSION_free(a->sessions);
4013 X509_STORE_free(a->cert_store);
4014 #ifndef OPENSSL_NO_CT
4015 CTLOG_STORE_free(a->ctlog_store);
4017 sk_SSL_CIPHER_free(a->cipher_list);
4018 sk_SSL_CIPHER_free(a->cipher_list_by_id);
4019 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
4020 ssl_cert_free(a->cert);
4021 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
4022 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
4023 OSSL_STACK_OF_X509_free(a->extra_certs);
4024 a->comp_methods = NULL;
4025 #ifndef OPENSSL_NO_SRTP
4026 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
4028 #ifndef OPENSSL_NO_SRP
4029 ssl_ctx_srp_ctx_free_intern(a);
4031 #ifndef OPENSSL_NO_ENGINE
4032 tls_engine_finish(a->client_cert_engine);
4035 OPENSSL_free(a->ext.ecpointformats);
4036 OPENSSL_free(a->ext.supportedgroups);
4037 OPENSSL_free(a->ext.supported_groups_default);
4038 OPENSSL_free(a->ext.alpn);
4039 OPENSSL_secure_free(a->ext.secure);
4041 ssl_evp_md_free(a->md5);
4042 ssl_evp_md_free(a->sha1);
4044 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
4045 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
4046 for (j = 0; j < SSL_MD_NUM_IDX; j++)
4047 ssl_evp_md_free(a->ssl_digest_methods[j]);
4048 for (j = 0; j < a->group_list_len; j++) {
4049 OPENSSL_free(a->group_list[j].tlsname);
4050 OPENSSL_free(a->group_list[j].realname);
4051 OPENSSL_free(a->group_list[j].algorithm);
4053 OPENSSL_free(a->group_list);
4055 OPENSSL_free(a->sigalg_lookup_cache);
4057 CRYPTO_THREAD_lock_free(a->lock);
4058 #ifdef TSAN_REQUIRES_LOCKING
4059 CRYPTO_THREAD_lock_free(a->tsan_lock);
4062 OPENSSL_free(a->propq);
4067 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
4069 ctx->default_passwd_callback = cb;
4072 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
4074 ctx->default_passwd_callback_userdata = u;
4077 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
4079 return ctx->default_passwd_callback;
4082 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
4084 return ctx->default_passwd_callback_userdata;
4087 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
4089 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4094 sc->default_passwd_callback = cb;
4097 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
4099 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4104 sc->default_passwd_callback_userdata = u;
4107 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
4109 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4114 return sc->default_passwd_callback;
4117 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4119 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4124 return sc->default_passwd_callback_userdata;
4127 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4128 int (*cb) (X509_STORE_CTX *, void *),
4131 ctx->app_verify_callback = cb;
4132 ctx->app_verify_arg = arg;
4135 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4136 int (*cb) (int, X509_STORE_CTX *))
4138 ctx->verify_mode = mode;
4139 ctx->default_verify_callback = cb;
4142 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4144 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4147 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4149 ssl_cert_set_cert_cb(c->cert, cb, arg);
4152 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4154 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4159 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4162 void ssl_set_masks(SSL_CONNECTION *s)
4165 uint32_t *pvalid = s->s3.tmp.valid_flags;
4166 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4167 unsigned long mask_k, mask_a;
4168 int have_ecc_cert, ecdsa_ok;
4173 dh_tmp = (c->dh_tmp != NULL
4174 || c->dh_tmp_cb != NULL
4177 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4178 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4179 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4180 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4184 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4185 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4187 #ifndef OPENSSL_NO_GOST
4188 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4189 mask_k |= SSL_kGOST | SSL_kGOST18;
4190 mask_a |= SSL_aGOST12;
4192 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4193 mask_k |= SSL_kGOST | SSL_kGOST18;
4194 mask_a |= SSL_aGOST12;
4196 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4197 mask_k |= SSL_kGOST;
4198 mask_a |= SSL_aGOST01;
4209 * If we only have an RSA-PSS certificate allow RSA authentication
4210 * if TLS 1.2 and peer supports it.
4213 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4214 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4215 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4222 mask_a |= SSL_aNULL;
4225 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4226 * depending on the key usage extension.
4228 if (have_ecc_cert) {
4230 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4231 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4232 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4235 mask_a |= SSL_aECDSA;
4237 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4238 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4239 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4240 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4241 mask_a |= SSL_aECDSA;
4243 /* Allow Ed448 for TLS 1.2 if peer supports it */
4244 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4245 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4246 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4247 mask_a |= SSL_aECDSA;
4249 mask_k |= SSL_kECDHE;
4251 #ifndef OPENSSL_NO_PSK
4254 if (mask_k & SSL_kRSA)
4255 mask_k |= SSL_kRSAPSK;
4256 if (mask_k & SSL_kDHE)
4257 mask_k |= SSL_kDHEPSK;
4258 if (mask_k & SSL_kECDHE)
4259 mask_k |= SSL_kECDHEPSK;
4262 s->s3.tmp.mask_k = mask_k;
4263 s->s3.tmp.mask_a = mask_a;
4266 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4268 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4269 /* key usage, if present, must allow signing */
4270 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4271 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4275 return 1; /* all checks are ok */
4278 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4279 const unsigned char **serverinfo,
4280 size_t *serverinfo_length)
4282 CERT_PKEY *cpk = s->s3.tmp.cert;
4283 *serverinfo_length = 0;
4285 if (cpk == NULL || cpk->serverinfo == NULL)
4288 *serverinfo = cpk->serverinfo;
4289 *serverinfo_length = cpk->serverinfo_length;
4293 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4298 * If the session_id_length is 0, we are not supposed to cache it, and it
4299 * would be rather hard to do anyway :-)
4301 if (s->session->session_id_length == 0)
4305 * If sid_ctx_length is 0 there is no specific application context
4306 * associated with this session, so when we try to resume it and
4307 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4308 * indication that this is actually a session for the proper application
4309 * context, and the *handshake* will fail, not just the resumption attempt.
4310 * Do not cache (on the server) these sessions that are not resumable
4311 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4313 if (s->server && s->session->sid_ctx_length == 0
4314 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4317 i = s->session_ctx->session_cache_mode;
4319 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4321 * Add the session to the internal cache. In server side TLSv1.3 we
4322 * normally don't do this because by default it's a full stateless ticket
4323 * with only a dummy session id so there is no reason to cache it,
4325 * - we are doing early_data, in which case we cache so that we can
4327 * - the application has set a remove_session_cb so needs to know about
4328 * session timeout events
4329 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4331 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4332 && (!SSL_CONNECTION_IS_TLS13(s)
4334 || (s->max_early_data > 0
4335 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4336 || s->session_ctx->remove_session_cb != NULL
4337 || (s->options & SSL_OP_NO_TICKET) != 0))
4338 SSL_CTX_add_session(s->session_ctx, s->session);
4341 * Add the session to the external cache. We do this even in server side
4342 * TLSv1.3 without early data because some applications just want to
4343 * know about the creation of a session and aren't doing a full cache.
4345 if (s->session_ctx->new_session_cb != NULL) {
4346 SSL_SESSION_up_ref(s->session);
4347 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4349 SSL_SESSION_free(s->session);
4353 /* auto flush every 255 connections */
4354 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4355 TSAN_QUALIFIER int *stat;
4357 if (mode & SSL_SESS_CACHE_CLIENT)
4358 stat = &s->session_ctx->stats.sess_connect_good;
4360 stat = &s->session_ctx->stats.sess_accept_good;
4361 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4362 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4366 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4371 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4376 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4379 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4381 /* TODO(QUIC): Do we want this for QUIC? */
4383 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4386 if (s->method != meth) {
4387 const SSL_METHOD *sm = s->method;
4388 int (*hf) (SSL *) = sc->handshake_func;
4390 if (sm->version == meth->version)
4395 ret = s->method->ssl_init(s);
4398 if (hf == sm->ssl_connect)
4399 sc->handshake_func = meth->ssl_connect;
4400 else if (hf == sm->ssl_accept)
4401 sc->handshake_func = meth->ssl_accept;
4406 int SSL_get_error(const SSL *s, int i)
4411 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4412 #ifndef OPENSSL_NO_QUIC
4413 const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
4417 return SSL_ERROR_NONE;
4419 #ifndef OPENSSL_NO_QUIC
4421 reason = ossl_quic_get_error(qc, i);
4422 if (reason != SSL_ERROR_NONE)
4428 return SSL_ERROR_SSL;
4431 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4432 * where we do encode the error
4434 if ((l = ERR_peek_error()) != 0) {
4435 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4436 return SSL_ERROR_SYSCALL;
4438 return SSL_ERROR_SSL;
4441 #ifndef OPENSSL_NO_QUIC
4445 if (SSL_want_read(s)) {
4446 bio = SSL_get_rbio(s);
4447 if (BIO_should_read(bio))
4448 return SSL_ERROR_WANT_READ;
4449 else if (BIO_should_write(bio))
4451 * This one doesn't make too much sense ... We never try to
4452 * write to the rbio, and an application program where rbio and
4453 * wbio are separate couldn't even know what it should wait for.
4454 * However if we ever set s->rwstate incorrectly (so that we
4455 * have SSL_want_read(s) instead of SSL_want_write(s)) and rbio
4456 * and wbio *are* the same, this test works around that bug; so
4457 * it might be safer to keep it.
4459 return SSL_ERROR_WANT_WRITE;
4460 else if (BIO_should_io_special(bio)) {
4461 reason = BIO_get_retry_reason(bio);
4462 if (reason == BIO_RR_CONNECT)
4463 return SSL_ERROR_WANT_CONNECT;
4464 else if (reason == BIO_RR_ACCEPT)
4465 return SSL_ERROR_WANT_ACCEPT;
4467 return SSL_ERROR_SYSCALL; /* unknown */
4471 if (SSL_want_write(s)) {
4473 * Access wbio directly - in order to use the buffered bio if
4477 if (BIO_should_write(bio))
4478 return SSL_ERROR_WANT_WRITE;
4479 else if (BIO_should_read(bio))
4481 * See above (SSL_want_read(s) with BIO_should_write(bio))
4483 return SSL_ERROR_WANT_READ;
4484 else if (BIO_should_io_special(bio)) {
4485 reason = BIO_get_retry_reason(bio);
4486 if (reason == BIO_RR_CONNECT)
4487 return SSL_ERROR_WANT_CONNECT;
4488 else if (reason == BIO_RR_ACCEPT)
4489 return SSL_ERROR_WANT_ACCEPT;
4491 return SSL_ERROR_SYSCALL;
4496 if (SSL_want_x509_lookup(s))
4497 return SSL_ERROR_WANT_X509_LOOKUP;
4498 if (SSL_want_retry_verify(s))
4499 return SSL_ERROR_WANT_RETRY_VERIFY;
4500 if (SSL_want_async(s))
4501 return SSL_ERROR_WANT_ASYNC;
4502 if (SSL_want_async_job(s))
4503 return SSL_ERROR_WANT_ASYNC_JOB;
4504 if (SSL_want_client_hello_cb(s))
4505 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4507 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4508 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4509 return SSL_ERROR_ZERO_RETURN;
4511 return SSL_ERROR_SYSCALL;
4514 static int ssl_do_handshake_intern(void *vargs)
4516 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4518 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4523 return sc->handshake_func(s);
4526 int SSL_do_handshake(SSL *s)
4529 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4530 #ifndef OPENSSL_NO_QUIC
4531 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4534 return ossl_quic_do_handshake(qc);
4537 if (sc->handshake_func == NULL) {
4538 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4542 ossl_statem_check_finish_init(sc, -1);
4544 s->method->ssl_renegotiate_check(s, 0);
4546 if (SSL_in_init(s) || SSL_in_before(s)) {
4547 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4548 struct ssl_async_args args;
4550 memset(&args, 0, sizeof(args));
4553 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4555 ret = sc->handshake_func(s);
4561 void SSL_set_accept_state(SSL *s)
4563 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4564 #ifndef OPENSSL_NO_QUIC
4565 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4568 ossl_quic_set_accept_state(qc);
4575 ossl_statem_clear(sc);
4576 sc->handshake_func = s->method->ssl_accept;
4577 /* Ignore return value. Its a void public API function */
4578 clear_record_layer(sc);
4581 void SSL_set_connect_state(SSL *s)
4583 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4584 #ifndef OPENSSL_NO_QUIC
4585 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
4588 ossl_quic_set_connect_state(qc);
4595 ossl_statem_clear(sc);
4596 sc->handshake_func = s->method->ssl_connect;
4597 /* Ignore return value. Its a void public API function */
4598 clear_record_layer(sc);
4601 int ssl_undefined_function(SSL *s)
4603 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4607 int ssl_undefined_void_function(void)
4609 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4613 int ssl_undefined_const_function(const SSL *s)
4618 const SSL_METHOD *ssl_bad_method(int ver)
4620 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4624 const char *ssl_protocol_to_string(int version)
4628 case TLS1_3_VERSION:
4631 case TLS1_2_VERSION:
4634 case TLS1_1_VERSION:
4649 case DTLS1_2_VERSION:
4657 const char *SSL_get_version(const SSL *s)
4659 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4664 return ssl_protocol_to_string(sc->version);
4667 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4669 STACK_OF(X509_NAME) *sk;
4678 if ((sk = sk_X509_NAME_new_null()) == NULL)
4680 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4681 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4683 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4686 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4688 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4697 SSL *SSL_dup(SSL *s)
4701 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4702 SSL_CONNECTION *retsc;
4703 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4708 /* If we're not quiescent, just up_ref! */
4709 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4710 CRYPTO_UP_REF(&s->references, &i, s->lock);
4715 * Otherwise, copy configuration state, and session if set.
4717 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4719 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4722 if (sc->session != NULL) {
4724 * Arranges to share the same session via up_ref. This "copies"
4725 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4727 if (!SSL_copy_session_id(ret, s))
4731 * No session has been established yet, so we have to expect that
4732 * s->cert or ret->cert will be changed later -- they should not both
4733 * point to the same object, and thus we can't use
4734 * SSL_copy_session_id.
4736 if (!SSL_set_ssl_method(ret, s->method))
4739 if (sc->cert != NULL) {
4740 ssl_cert_free(retsc->cert);
4741 retsc->cert = ssl_cert_dup(sc->cert);
4742 if (retsc->cert == NULL)
4746 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4747 (int)sc->sid_ctx_length))
4751 if (!ssl_dane_dup(retsc, sc))
4753 retsc->version = sc->version;
4754 retsc->options = sc->options;
4755 retsc->min_proto_version = sc->min_proto_version;
4756 retsc->max_proto_version = sc->max_proto_version;
4757 retsc->mode = sc->mode;
4758 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4759 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4760 retsc->msg_callback = sc->msg_callback;
4761 retsc->msg_callback_arg = sc->msg_callback_arg;
4762 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4763 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4764 retsc->generate_session_id = sc->generate_session_id;
4766 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4768 /* copy app data, a little dangerous perhaps */
4769 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4772 retsc->server = sc->server;
4773 if (sc->handshake_func) {
4775 SSL_set_accept_state(ret);
4777 SSL_set_connect_state(ret);
4779 retsc->shutdown = sc->shutdown;
4780 retsc->hit = sc->hit;
4782 retsc->default_passwd_callback = sc->default_passwd_callback;
4783 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4785 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4787 /* dup the cipher_list and cipher_list_by_id stacks */
4788 if (sc->cipher_list != NULL) {
4789 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4792 if (sc->cipher_list_by_id != NULL)
4793 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4797 /* Dup the client_CA list */
4798 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4799 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4809 X509 *SSL_get_certificate(const SSL *s)
4811 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4816 if (sc->cert != NULL)
4817 return sc->cert->key->x509;
4822 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4824 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4829 if (sc->cert != NULL)
4830 return sc->cert->key->privatekey;
4835 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4837 if (ctx->cert != NULL)
4838 return ctx->cert->key->x509;
4843 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4845 if (ctx->cert != NULL)
4846 return ctx->cert->key->privatekey;
4851 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4853 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4858 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4859 return sc->session->cipher;
4863 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4865 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4870 return sc->s3.tmp.new_cipher;
4873 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4875 #ifndef OPENSSL_NO_COMP
4876 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4881 return sc->rlayer.wrlmethod->get_compression(sc->rlayer.wrl);
4887 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4889 #ifndef OPENSSL_NO_COMP
4890 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4895 return sc->rlayer.rrlmethod->get_compression(sc->rlayer.rrl);
4901 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4905 if (s->bbio != NULL) {
4906 /* Already buffered. */
4910 bbio = BIO_new(BIO_f_buffer());
4911 if (bbio == NULL || BIO_set_read_buffer_size(bbio, 1) <= 0) {
4913 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4917 s->wbio = BIO_push(bbio, s->wbio);
4919 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4924 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4926 /* callers ensure s is never null */
4927 if (s->bbio == NULL)
4930 s->wbio = BIO_pop(s->wbio);
4931 s->rlayer.wrlmethod->set1_bio(s->rlayer.wrl, s->wbio);
4939 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4941 ctx->quiet_shutdown = mode;
4944 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4946 return ctx->quiet_shutdown;
4949 void SSL_set_quiet_shutdown(SSL *s, int mode)
4951 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4953 /* TODO(QUIC): Do we want this for QUIC? */
4957 sc->quiet_shutdown = mode;
4960 int SSL_get_quiet_shutdown(const SSL *s)
4962 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4964 /* TODO(QUIC): Do we want this for QUIC? */
4968 return sc->quiet_shutdown;
4971 void SSL_set_shutdown(SSL *s, int mode)
4973 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4975 /* TODO(QUIC): Do we want this for QUIC? */
4979 sc->shutdown = mode;
4982 int SSL_get_shutdown(const SSL *s)
4984 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4986 /* TODO(QUIC): Do we want this for QUIC? */
4990 return sc->shutdown;
4993 int SSL_version(const SSL *s)
4995 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4997 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5004 int SSL_client_version(const SSL *s)
5006 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5008 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
5012 return sc->client_version;
5015 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
5020 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
5023 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
5025 /* TODO(QUIC): Do we need this for QUIC support? */
5029 if (ssl->ctx == ctx)
5032 ctx = sc->session_ctx;
5033 new_cert = ssl_cert_dup(ctx->cert);
5034 if (new_cert == NULL) {
5038 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
5039 ssl_cert_free(new_cert);
5043 ssl_cert_free(sc->cert);
5044 sc->cert = new_cert;
5047 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
5048 * so setter APIs must prevent invalid lengths from entering the system.
5050 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
5054 * If the session ID context matches that of the parent SSL_CTX,
5055 * inherit it from the new SSL_CTX as well. If however the context does
5056 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
5057 * leave it unchanged.
5059 if ((ssl->ctx != NULL) &&
5060 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
5061 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
5062 sc->sid_ctx_length = ctx->sid_ctx_length;
5063 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
5066 SSL_CTX_up_ref(ctx);
5067 SSL_CTX_free(ssl->ctx); /* decrement reference count */
5073 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
5075 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
5079 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
5081 X509_LOOKUP *lookup;
5083 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
5087 /* We ignore errors, in case the directory doesn't exist */
5090 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
5097 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
5099 X509_LOOKUP *lookup;
5101 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
5105 /* We ignore errors, in case the file doesn't exist */
5108 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
5116 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
5118 X509_LOOKUP *lookup;
5120 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
5124 /* We ignore errors, in case the directory doesn't exist */
5127 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5134 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5136 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5140 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5142 return X509_STORE_load_path(ctx->cert_store, CApath);
5145 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5147 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5151 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5154 if (CAfile == NULL && CApath == NULL)
5156 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5158 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5163 void SSL_set_info_callback(SSL *ssl,
5164 void (*cb) (const SSL *ssl, int type, int val))
5166 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5171 sc->info_callback = cb;
5175 * One compiler (Diab DCC) doesn't like argument names in returned function
5178 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5181 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5186 return sc->info_callback;
5189 void SSL_set_verify_result(SSL *ssl, long arg)
5191 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5196 sc->verify_result = arg;
5199 long SSL_get_verify_result(const SSL *ssl)
5201 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5206 return sc->verify_result;
5209 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5211 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5217 return sizeof(sc->s3.client_random);
5218 if (outlen > sizeof(sc->s3.client_random))
5219 outlen = sizeof(sc->s3.client_random);
5220 memcpy(out, sc->s3.client_random, outlen);
5224 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5226 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5232 return sizeof(sc->s3.server_random);
5233 if (outlen > sizeof(sc->s3.server_random))
5234 outlen = sizeof(sc->s3.server_random);
5235 memcpy(out, sc->s3.server_random, outlen);
5239 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5240 unsigned char *out, size_t outlen)
5243 return session->master_key_length;
5244 if (outlen > session->master_key_length)
5245 outlen = session->master_key_length;
5246 memcpy(out, session->master_key, outlen);
5250 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5253 if (len > sizeof(sess->master_key))
5256 memcpy(sess->master_key, in, len);
5257 sess->master_key_length = len;
5262 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5264 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5267 void *SSL_get_ex_data(const SSL *s, int idx)
5269 return CRYPTO_get_ex_data(&s->ex_data, idx);
5272 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5274 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5277 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5279 return CRYPTO_get_ex_data(&s->ex_data, idx);
5282 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5284 return ctx->cert_store;
5287 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5289 X509_STORE_free(ctx->cert_store);
5290 ctx->cert_store = store;
5293 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5296 X509_STORE_up_ref(store);
5297 SSL_CTX_set_cert_store(ctx, store);
5300 int SSL_want(const SSL *s)
5302 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5310 #ifndef OPENSSL_NO_PSK
5311 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5313 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5314 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5317 OPENSSL_free(ctx->cert->psk_identity_hint);
5318 if (identity_hint != NULL) {
5319 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5320 if (ctx->cert->psk_identity_hint == NULL)
5323 ctx->cert->psk_identity_hint = NULL;
5327 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5329 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5334 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5335 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5338 OPENSSL_free(sc->cert->psk_identity_hint);
5339 if (identity_hint != NULL) {
5340 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5341 if (sc->cert->psk_identity_hint == NULL)
5344 sc->cert->psk_identity_hint = NULL;
5348 const char *SSL_get_psk_identity_hint(const SSL *s)
5350 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5352 if (sc == NULL || sc->session == NULL)
5355 return sc->session->psk_identity_hint;
5358 const char *SSL_get_psk_identity(const SSL *s)
5360 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5362 if (sc == NULL || sc->session == NULL)
5365 return sc->session->psk_identity;
5368 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5370 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5375 sc->psk_client_callback = cb;
5378 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5380 ctx->psk_client_callback = cb;
5383 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5385 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5390 sc->psk_server_callback = cb;
5393 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5395 ctx->psk_server_callback = cb;
5399 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5401 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5406 sc->psk_find_session_cb = cb;
5409 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5410 SSL_psk_find_session_cb_func cb)
5412 ctx->psk_find_session_cb = cb;
5415 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5417 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5422 sc->psk_use_session_cb = cb;
5425 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5426 SSL_psk_use_session_cb_func cb)
5428 ctx->psk_use_session_cb = cb;
5431 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5432 void (*cb) (int write_p, int version,
5433 int content_type, const void *buf,
5434 size_t len, SSL *ssl, void *arg))
5436 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5439 void SSL_set_msg_callback(SSL *ssl,
5440 void (*cb) (int write_p, int version,
5441 int content_type, const void *buf,
5442 size_t len, SSL *ssl, void *arg))
5444 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5447 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5448 int (*cb) (SSL *ssl,
5452 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5453 (void (*)(void))cb);
5456 void SSL_set_not_resumable_session_callback(SSL *ssl,
5457 int (*cb) (SSL *ssl,
5458 int is_forward_secure))
5460 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5461 (void (*)(void))cb);
5464 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5465 size_t (*cb) (SSL *ssl, int type,
5466 size_t len, void *arg))
5468 ctx->record_padding_cb = cb;
5471 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5473 ctx->record_padding_arg = arg;
5476 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5478 return ctx->record_padding_arg;
5481 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5483 /* block size of 0 or 1 is basically no padding */
5484 if (block_size == 1)
5485 ctx->block_padding = 0;
5486 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5487 ctx->block_padding = block_size;
5493 int SSL_set_record_padding_callback(SSL *ssl,
5494 size_t (*cb) (SSL *ssl, int type,
5495 size_t len, void *arg))
5498 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5503 b = SSL_get_wbio(ssl);
5504 if (b == NULL || !BIO_get_ktls_send(b)) {
5505 sc->rlayer.record_padding_cb = cb;
5511 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5513 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5518 sc->rlayer.record_padding_arg = arg;
5521 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5523 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5528 return sc->rlayer.record_padding_arg;
5531 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5533 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5538 /* block size of 0 or 1 is basically no padding */
5539 if (block_size == 1)
5540 sc->rlayer.block_padding = 0;
5541 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5542 sc->rlayer.block_padding = block_size;
5548 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5550 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5555 sc->num_tickets = num_tickets;
5560 size_t SSL_get_num_tickets(const SSL *s)
5562 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5567 return sc->num_tickets;
5570 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5572 ctx->num_tickets = num_tickets;
5577 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5579 return ctx->num_tickets;
5582 /* Retrieve handshake hashes */
5583 int ssl_handshake_hash(SSL_CONNECTION *s,
5584 unsigned char *out, size_t outlen,
5587 EVP_MD_CTX *ctx = NULL;
5588 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5589 int hashleni = EVP_MD_CTX_get_size(hdgst);
5592 if (hashleni < 0 || (size_t)hashleni > outlen) {
5593 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5597 ctx = EVP_MD_CTX_new();
5599 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5603 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5604 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5605 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5609 *hashlen = hashleni;
5613 EVP_MD_CTX_free(ctx);
5617 int SSL_session_reused(const SSL *s)
5619 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5627 int SSL_is_server(const SSL *s)
5629 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5637 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5638 void SSL_set_debug(SSL *s, int debug)
5640 /* Old function was do-nothing anyway... */
5646 void SSL_set_security_level(SSL *s, int level)
5648 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5653 sc->cert->sec_level = level;
5656 int SSL_get_security_level(const SSL *s)
5658 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5663 return sc->cert->sec_level;
5666 void SSL_set_security_callback(SSL *s,
5667 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5668 int op, int bits, int nid,
5669 void *other, void *ex))
5671 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5676 sc->cert->sec_cb = cb;
5679 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5680 const SSL_CTX *ctx, int op,
5681 int bits, int nid, void *other,
5683 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5688 return sc->cert->sec_cb;
5691 void SSL_set0_security_ex_data(SSL *s, void *ex)
5693 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5698 sc->cert->sec_ex = ex;
5701 void *SSL_get0_security_ex_data(const SSL *s)
5703 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5708 return sc->cert->sec_ex;
5711 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5713 ctx->cert->sec_level = level;
5716 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5718 return ctx->cert->sec_level;
5721 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5722 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5723 int op, int bits, int nid,
5724 void *other, void *ex))
5726 ctx->cert->sec_cb = cb;
5729 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5735 return ctx->cert->sec_cb;
5738 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5740 ctx->cert->sec_ex = ex;
5743 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5745 return ctx->cert->sec_ex;
5748 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5750 return ctx->options;
5753 uint64_t SSL_get_options(const SSL *s)
5755 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5763 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5765 return ctx->options |= op;
5768 uint64_t SSL_set_options(SSL *s, uint64_t op)
5770 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5771 OSSL_PARAM options[2], *opts = options;
5778 *opts++ = OSSL_PARAM_construct_uint64(OSSL_LIBSSL_RECORD_LAYER_PARAM_OPTIONS,
5780 *opts = OSSL_PARAM_construct_end();
5782 /* Ignore return value */
5783 sc->rlayer.rrlmethod->set_options(sc->rlayer.rrl, options);
5788 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5790 return ctx->options &= ~op;
5793 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5795 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5800 return sc->options &= ~op;
5803 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5805 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5810 return sc->verified_chain;
5813 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5815 #ifndef OPENSSL_NO_CT
5818 * Moves SCTs from the |src| stack to the |dst| stack.
5819 * The source of each SCT will be set to |origin|.
5820 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5822 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5824 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5825 sct_source_t origin)
5831 *dst = sk_SCT_new_null();
5833 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
5838 while ((sct = sk_SCT_pop(src)) != NULL) {
5839 if (SCT_set_source(sct, origin) != 1)
5842 if (sk_SCT_push(*dst, sct) <= 0)
5850 sk_SCT_push(src, sct); /* Put the SCT back */
5855 * Look for data collected during ServerHello and parse if found.
5856 * Returns the number of SCTs extracted.
5858 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5860 int scts_extracted = 0;
5862 if (s->ext.scts != NULL) {
5863 const unsigned char *p = s->ext.scts;
5864 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5866 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5868 SCT_LIST_free(scts);
5871 return scts_extracted;
5875 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5876 * contains an SCT X509 extension. They will be stored in |s->scts|.
5878 * - The number of SCTs extracted, assuming an OCSP response exists.
5879 * - 0 if no OCSP response exists or it contains no SCTs.
5880 * - A negative integer if an error occurs.
5882 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5884 # ifndef OPENSSL_NO_OCSP
5885 int scts_extracted = 0;
5886 const unsigned char *p;
5887 OCSP_BASICRESP *br = NULL;
5888 OCSP_RESPONSE *rsp = NULL;
5889 STACK_OF(SCT) *scts = NULL;
5892 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5895 p = s->ext.ocsp.resp;
5896 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5900 br = OCSP_response_get1_basic(rsp);
5904 for (i = 0; i < OCSP_resp_count(br); ++i) {
5905 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5911 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5913 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5914 if (scts_extracted < 0)
5918 SCT_LIST_free(scts);
5919 OCSP_BASICRESP_free(br);
5920 OCSP_RESPONSE_free(rsp);
5921 return scts_extracted;
5923 /* Behave as if no OCSP response exists */
5929 * Attempts to extract SCTs from the peer certificate.
5930 * Return the number of SCTs extracted, or a negative integer if an error
5933 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5935 int scts_extracted = 0;
5936 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5939 STACK_OF(SCT) *scts =
5940 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5943 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5945 SCT_LIST_free(scts);
5948 return scts_extracted;
5952 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5953 * response (if it exists) and X509v3 extensions in the certificate.
5954 * Returns NULL if an error occurs.
5956 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5958 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5963 if (!sc->scts_parsed) {
5964 if (ct_extract_tls_extension_scts(sc) < 0 ||
5965 ct_extract_ocsp_response_scts(sc) < 0 ||
5966 ct_extract_x509v3_extension_scts(sc) < 0)
5969 sc->scts_parsed = 1;
5976 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5977 const STACK_OF(SCT) *scts, void *unused_arg)
5982 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5983 const STACK_OF(SCT) *scts, void *unused_arg)
5985 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5988 for (i = 0; i < count; ++i) {
5989 SCT *sct = sk_SCT_value(scts, i);
5990 int status = SCT_get_validation_status(sct);
5992 if (status == SCT_VALIDATION_STATUS_VALID)
5995 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5999 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
6002 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6008 * Since code exists that uses the custom extension handler for CT, look
6009 * for this and throw an error if they have already registered to use CT.
6011 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
6012 TLSEXT_TYPE_signed_certificate_timestamp))
6014 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6018 if (callback != NULL) {
6020 * If we are validating CT, then we MUST accept SCTs served via OCSP
6022 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
6026 sc->ct_validation_callback = callback;
6027 sc->ct_validation_callback_arg = arg;
6032 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
6033 ssl_ct_validation_cb callback, void *arg)
6036 * Since code exists that uses the custom extension handler for CT, look for
6037 * this and throw an error if they have already registered to use CT.
6039 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
6040 TLSEXT_TYPE_signed_certificate_timestamp))
6042 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
6046 ctx->ct_validation_callback = callback;
6047 ctx->ct_validation_callback_arg = arg;
6051 int SSL_ct_is_enabled(const SSL *s)
6053 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6058 return sc->ct_validation_callback != NULL;
6061 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
6063 return ctx->ct_validation_callback != NULL;
6066 int ssl_validate_ct(SSL_CONNECTION *s)
6069 X509 *cert = s->session != NULL ? s->session->peer : NULL;
6071 SSL_DANE *dane = &s->dane;
6072 CT_POLICY_EVAL_CTX *ctx = NULL;
6073 const STACK_OF(SCT) *scts;
6076 * If no callback is set, the peer is anonymous, or its chain is invalid,
6077 * skip SCT validation - just return success. Applications that continue
6078 * handshakes without certificates, with unverified chains, or pinned leaf
6079 * certificates are outside the scope of the WebPKI and CT.
6081 * The above exclusions notwithstanding the vast majority of peers will
6082 * have rather ordinary certificate chains validated by typical
6083 * applications that perform certificate verification and therefore will
6084 * process SCTs when enabled.
6086 if (s->ct_validation_callback == NULL || cert == NULL ||
6087 s->verify_result != X509_V_OK ||
6088 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
6092 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
6093 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
6095 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
6096 switch (dane->mtlsa->usage) {
6097 case DANETLS_USAGE_DANE_TA:
6098 case DANETLS_USAGE_DANE_EE:
6103 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
6104 SSL_CONNECTION_GET_CTX(s)->propq);
6106 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CT_LIB);
6110 issuer = sk_X509_value(s->verified_chain, 1);
6111 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6112 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6113 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6114 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6115 CT_POLICY_EVAL_CTX_set_time(
6116 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6118 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6121 * This function returns success (> 0) only when all the SCTs are valid, 0
6122 * when some are invalid, and < 0 on various internal errors (out of
6123 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6124 * reason to abort the handshake, that decision is up to the callback.
6125 * Therefore, we error out only in the unexpected case that the return
6126 * value is negative.
6128 * XXX: One might well argue that the return value of this function is an
6129 * unfortunate design choice. Its job is only to determine the validation
6130 * status of each of the provided SCTs. So long as it correctly separates
6131 * the wheat from the chaff it should return success. Failure in this case
6132 * ought to correspond to an inability to carry out its duties.
6134 if (SCT_LIST_validate(scts, ctx) < 0) {
6135 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6139 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6141 ret = 0; /* This function returns 0 on failure */
6143 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6146 CT_POLICY_EVAL_CTX_free(ctx);
6148 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6149 * failure return code here. Also the application may wish the complete
6150 * the handshake, and then disconnect cleanly at a higher layer, after
6151 * checking the verification status of the completed connection.
6153 * We therefore force a certificate verification failure which will be
6154 * visible via SSL_get_verify_result() and cached as part of any resumed
6157 * Note: the permissive callback is for information gathering only, always
6158 * returns success, and does not affect verification status. Only the
6159 * strict callback or a custom application-specified callback can trigger
6160 * connection failure or record a verification error.
6163 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6167 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6169 switch (validation_mode) {
6171 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6173 case SSL_CT_VALIDATION_PERMISSIVE:
6174 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6175 case SSL_CT_VALIDATION_STRICT:
6176 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6180 int SSL_enable_ct(SSL *s, int validation_mode)
6182 switch (validation_mode) {
6184 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6186 case SSL_CT_VALIDATION_PERMISSIVE:
6187 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6188 case SSL_CT_VALIDATION_STRICT:
6189 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6193 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6195 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6198 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6200 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6203 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6205 CTLOG_STORE_free(ctx->ctlog_store);
6206 ctx->ctlog_store = logs;
6209 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6211 return ctx->ctlog_store;
6214 #endif /* OPENSSL_NO_CT */
6216 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6219 c->client_hello_cb = cb;
6220 c->client_hello_cb_arg = arg;
6223 int SSL_client_hello_isv2(SSL *s)
6225 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6230 if (sc->clienthello == NULL)
6232 return sc->clienthello->isv2;
6235 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6237 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6242 if (sc->clienthello == NULL)
6244 return sc->clienthello->legacy_version;
6247 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6249 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6254 if (sc->clienthello == NULL)
6257 *out = sc->clienthello->random;
6258 return SSL3_RANDOM_SIZE;
6261 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6263 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6268 if (sc->clienthello == NULL)
6271 *out = sc->clienthello->session_id;
6272 return sc->clienthello->session_id_len;
6275 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6277 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6282 if (sc->clienthello == NULL)
6285 *out = PACKET_data(&sc->clienthello->ciphersuites);
6286 return PACKET_remaining(&sc->clienthello->ciphersuites);
6289 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6291 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6296 if (sc->clienthello == NULL)
6299 *out = sc->clienthello->compressions;
6300 return sc->clienthello->compressions_len;
6303 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6308 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6313 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6315 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6316 ext = sc->clienthello->pre_proc_exts + i;
6325 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL)
6327 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6328 ext = sc->clienthello->pre_proc_exts + i;
6330 if (ext->received_order >= num)
6332 present[ext->received_order] = ext->type;
6339 OPENSSL_free(present);
6343 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6347 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6352 if (sc->clienthello == NULL || num_exts == NULL)
6354 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6355 ext = sc->clienthello->pre_proc_exts + i;
6367 if (*num_exts < num)
6369 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6370 ext = sc->clienthello->pre_proc_exts + i;
6372 if (ext->received_order >= num)
6374 exts[ext->received_order] = ext->type;
6381 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6386 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6391 if (sc->clienthello == NULL)
6393 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6394 r = sc->clienthello->pre_proc_exts + i;
6395 if (r->present && r->type == type) {
6397 *out = PACKET_data(&r->data);
6399 *outlen = PACKET_remaining(&r->data);
6406 int SSL_free_buffers(SSL *ssl)
6409 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6416 return rl->rrlmethod->free_buffers(rl->rrl)
6417 && rl->wrlmethod->free_buffers(rl->wrl);
6420 int SSL_alloc_buffers(SSL *ssl)
6423 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6430 return rl->rrlmethod->alloc_buffers(rl->rrl)
6431 && rl->wrlmethod->alloc_buffers(rl->wrl);
6434 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6436 ctx->keylog_callback = cb;
6439 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6441 return ctx->keylog_callback;
6444 static int nss_keylog_int(const char *prefix,
6446 const uint8_t *parameter_1,
6447 size_t parameter_1_len,
6448 const uint8_t *parameter_2,
6449 size_t parameter_2_len)
6452 char *cursor = NULL;
6456 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6458 if (sctx->keylog_callback == NULL)
6462 * Our output buffer will contain the following strings, rendered with
6463 * space characters in between, terminated by a NULL character: first the
6464 * prefix, then the first parameter, then the second parameter. The
6465 * meaning of each parameter depends on the specific key material being
6466 * logged. Note that the first and second parameters are encoded in
6467 * hexadecimal, so we need a buffer that is twice their lengths.
6469 prefix_len = strlen(prefix);
6470 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6471 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL)
6474 strcpy(cursor, prefix);
6475 cursor += prefix_len;
6478 for (i = 0; i < parameter_1_len; i++) {
6479 sprintf(cursor, "%02x", parameter_1[i]);
6484 for (i = 0; i < parameter_2_len; i++) {
6485 sprintf(cursor, "%02x", parameter_2[i]);
6490 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6491 OPENSSL_clear_free(out, out_len);
6496 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6497 const uint8_t *encrypted_premaster,
6498 size_t encrypted_premaster_len,
6499 const uint8_t *premaster,
6500 size_t premaster_len)
6502 if (encrypted_premaster_len < 8) {
6503 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6507 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6508 return nss_keylog_int("RSA",
6510 encrypted_premaster,
6516 int ssl_log_secret(SSL_CONNECTION *sc,
6518 const uint8_t *secret,
6521 return nss_keylog_int(label,
6523 sc->s3.client_random,
6529 #define SSLV2_CIPHER_LEN 3
6531 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6535 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6537 if (PACKET_remaining(cipher_suites) == 0) {
6538 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6542 if (PACKET_remaining(cipher_suites) % n != 0) {
6543 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6547 OPENSSL_free(s->s3.tmp.ciphers_raw);
6548 s->s3.tmp.ciphers_raw = NULL;
6549 s->s3.tmp.ciphers_rawlen = 0;
6552 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6553 PACKET sslv2ciphers = *cipher_suites;
6554 unsigned int leadbyte;
6558 * We store the raw ciphers list in SSLv3+ format so we need to do some
6559 * preprocessing to convert the list first. If there are any SSLv2 only
6560 * ciphersuites with a non-zero leading byte then we are going to
6561 * slightly over allocate because we won't store those. But that isn't a
6564 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6565 s->s3.tmp.ciphers_raw = raw;
6567 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6570 for (s->s3.tmp.ciphers_rawlen = 0;
6571 PACKET_remaining(&sslv2ciphers) > 0;
6572 raw += TLS_CIPHER_LEN) {
6573 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6575 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6578 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6579 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6580 OPENSSL_free(s->s3.tmp.ciphers_raw);
6581 s->s3.tmp.ciphers_raw = NULL;
6582 s->s3.tmp.ciphers_rawlen = 0;
6586 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6588 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6589 &s->s3.tmp.ciphers_rawlen)) {
6590 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6596 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6597 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6598 STACK_OF(SSL_CIPHER) **scsvs)
6601 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6606 if (!PACKET_buf_init(&pkt, bytes, len))
6608 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6611 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6612 STACK_OF(SSL_CIPHER) **skp,
6613 STACK_OF(SSL_CIPHER) **scsvs_out,
6614 int sslv2format, int fatal)
6616 const SSL_CIPHER *c;
6617 STACK_OF(SSL_CIPHER) *sk = NULL;
6618 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6620 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6621 unsigned char cipher[SSLV2_CIPHER_LEN];
6623 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6625 if (PACKET_remaining(cipher_suites) == 0) {
6627 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6629 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6633 if (PACKET_remaining(cipher_suites) % n != 0) {
6635 SSLfatal(s, SSL_AD_DECODE_ERROR,
6636 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6638 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6642 sk = sk_SSL_CIPHER_new_null();
6643 scsvs = sk_SSL_CIPHER_new_null();
6644 if (sk == NULL || scsvs == NULL) {
6646 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6648 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6652 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6654 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6655 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6656 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6658 if (sslv2format && cipher[0] != '\0')
6661 /* For SSLv2-compat, ignore leading 0-byte. */
6662 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6664 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6665 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6667 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_CRYPTO_LIB);
6669 ERR_raise(ERR_LIB_SSL, ERR_R_CRYPTO_LIB);
6674 if (PACKET_remaining(cipher_suites) > 0) {
6676 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6678 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6685 sk_SSL_CIPHER_free(sk);
6686 if (scsvs_out != NULL)
6689 sk_SSL_CIPHER_free(scsvs);
6692 sk_SSL_CIPHER_free(sk);
6693 sk_SSL_CIPHER_free(scsvs);
6697 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6699 ctx->max_early_data = max_early_data;
6704 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6706 return ctx->max_early_data;
6709 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6711 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6716 sc->max_early_data = max_early_data;
6721 uint32_t SSL_get_max_early_data(const SSL *s)
6723 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6728 return sc->max_early_data;
6731 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6733 ctx->recv_max_early_data = recv_max_early_data;
6738 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6740 return ctx->recv_max_early_data;
6743 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6745 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6750 sc->recv_max_early_data = recv_max_early_data;
6755 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6757 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6762 return sc->recv_max_early_data;
6765 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6767 /* Return any active Max Fragment Len extension */
6768 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6769 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6771 /* return current SSL connection setting */
6772 return sc->max_send_fragment;
6775 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6777 /* Return a value regarding an active Max Fragment Len extension */
6778 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6779 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6780 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6782 /* else limit |split_send_fragment| to current |max_send_fragment| */
6783 if (sc->split_send_fragment > sc->max_send_fragment)
6784 return sc->max_send_fragment;
6786 /* return current SSL connection setting */
6787 return sc->split_send_fragment;
6790 int SSL_stateless(SSL *s)
6793 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6795 /* TODO(QUIC): This will need further work. */
6799 /* Ensure there is no state left over from a previous invocation */
6805 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6806 ret = SSL_accept(s);
6807 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6809 if (ret > 0 && sc->ext.cookieok)
6812 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6818 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6820 ctx->pha_enabled = val;
6823 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6825 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6830 sc->pha_enabled = val;
6833 int SSL_verify_client_post_handshake(SSL *ssl)
6835 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6840 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6841 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6845 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6849 if (!SSL_is_init_finished(ssl)) {
6850 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6854 switch (sc->post_handshake_auth) {
6856 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6859 case SSL_PHA_EXT_SENT:
6860 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6862 case SSL_PHA_EXT_RECEIVED:
6864 case SSL_PHA_REQUEST_PENDING:
6865 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6867 case SSL_PHA_REQUESTED:
6868 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6872 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6874 /* checks verify_mode and algorithm_auth */
6875 if (!send_certificate_request(sc)) {
6876 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6877 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6881 ossl_statem_set_in_init(sc, 1);
6885 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6886 SSL_CTX_generate_session_ticket_fn gen_cb,
6887 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6890 ctx->generate_ticket_cb = gen_cb;
6891 ctx->decrypt_ticket_cb = dec_cb;
6892 ctx->ticket_cb_data = arg;
6896 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6897 SSL_allow_early_data_cb_fn cb,
6900 ctx->allow_early_data_cb = cb;
6901 ctx->allow_early_data_cb_data = arg;
6904 void SSL_set_allow_early_data_cb(SSL *s,
6905 SSL_allow_early_data_cb_fn cb,
6908 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6913 sc->allow_early_data_cb = cb;
6914 sc->allow_early_data_cb_data = arg;
6917 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6919 const char *properties)
6921 const EVP_CIPHER *ciph;
6923 ciph = tls_get_cipher_from_engine(nid);
6928 * If there is no engine cipher then we do an explicit fetch. This may fail
6929 * and that could be ok
6932 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6938 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6940 /* Don't up-ref an implicit EVP_CIPHER */
6941 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6945 * The cipher was explicitly fetched and therefore it is safe to cast
6948 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6951 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6956 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6958 * The cipher was explicitly fetched and therefore it is safe to cast
6961 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6965 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6967 const char *properties)
6971 md = tls_get_digest_from_engine(nid);
6975 /* Otherwise we do an explicit fetch */
6977 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6982 int ssl_evp_md_up_ref(const EVP_MD *md)
6984 /* Don't up-ref an implicit EVP_MD */
6985 if (EVP_MD_get0_provider(md) == NULL)
6989 * The digest was explicitly fetched and therefore it is safe to cast
6992 return EVP_MD_up_ref((EVP_MD *)md);
6995 void ssl_evp_md_free(const EVP_MD *md)
7000 if (EVP_MD_get0_provider(md) != NULL) {
7002 * The digest was explicitly fetched and therefore it is safe to cast
7005 EVP_MD_free((EVP_MD *)md);
7009 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
7011 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
7016 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
7017 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7018 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7021 EVP_PKEY_free(sc->cert->dh_tmp);
7022 sc->cert->dh_tmp = dhpkey;
7026 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
7028 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
7029 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
7030 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
7033 EVP_PKEY_free(ctx->cert->dh_tmp);
7034 ctx->cert->dh_tmp = dhpkey;
7038 /* QUIC-specific methods which are supported on QUIC connections only. */
7039 int SSL_tick(SSL *s)
7042 #ifndef OPENSSL_NO_QUIC
7043 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7046 return ossl_quic_tick(qc);
7049 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7050 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc))
7052 * DTLSv1_handle_timeout returns 0 if the timer wasn't expired yet,
7053 * which we consider a success case. Theoretically DTLSv1_handle_timeout
7054 * can also return 0 if s is NULL or not a DTLS object, but we've
7055 * already ruled out those possibilities above, so this is not possible
7056 * here. Thus the only failure cases are where DTLSv1_handle_timeout
7059 return DTLSv1_handle_timeout(s) >= 0;
7064 int SSL_get_tick_timeout(SSL *s, struct timeval *tv)
7067 #ifndef OPENSSL_NO_QUIC
7068 QUIC_CONNECTION *qc;
7070 qc = QUIC_CONNECTION_FROM_SSL(s);
7072 return ossl_quic_get_tick_timeout(qc, tv);
7075 sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
7076 if (sc != NULL && SSL_CONNECTION_IS_DTLS(sc)
7077 && DTLSv1_get_timeout(s, tv))
7085 int SSL_get_rpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7087 #ifndef OPENSSL_NO_QUIC
7088 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7093 return ossl_quic_get_rpoll_descriptor(qc, desc);
7099 int SSL_get_wpoll_descriptor(SSL *s, BIO_POLL_DESCRIPTOR *desc)
7101 #ifndef OPENSSL_NO_QUIC
7102 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7107 return ossl_quic_get_wpoll_descriptor(qc, desc);
7113 int SSL_net_read_desired(SSL *s)
7115 #ifndef OPENSSL_NO_QUIC
7116 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7121 return ossl_quic_get_net_read_desired(qc);
7127 int SSL_net_write_desired(SSL *s)
7129 #ifndef OPENSSL_NO_QUIC
7130 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7135 return ossl_quic_get_net_write_desired(qc);
7141 int SSL_set_blocking_mode(SSL *s, int blocking)
7143 #ifndef OPENSSL_NO_QUIC
7144 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7149 return ossl_quic_conn_set_blocking_mode(qc, blocking);
7155 int SSL_get_blocking_mode(SSL *s)
7157 #ifndef OPENSSL_NO_QUIC
7158 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7163 return ossl_quic_conn_get_blocking_mode(qc);
7169 int SSL_set_initial_peer_addr(SSL *s, const BIO_ADDR *peer_addr)
7171 #ifndef OPENSSL_NO_QUIC
7172 QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
7177 return ossl_quic_conn_set_initial_peer_addr(qc, peer_addr);