2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
13 #include "ssl_local.h"
14 #include "internal/e_os.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/ocsp.h>
19 #include <openssl/dh.h>
20 #include <openssl/engine.h>
21 #include <openssl/async.h>
22 #include <openssl/ct.h>
23 #include <openssl/trace.h>
24 #include "internal/cryptlib.h"
25 #include "internal/refcount.h"
26 #include "internal/ktls.h"
28 static int ssl_undefined_function_1(SSL_CONNECTION *sc, SSL3_RECORD *r, size_t s,
29 int t, SSL_MAC_BUF *mac, size_t macsize)
31 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
34 static int ssl_undefined_function_2(SSL_CONNECTION *sc, SSL3_RECORD *r,
35 unsigned char *s, int t)
37 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
40 static int ssl_undefined_function_3(SSL_CONNECTION *sc, unsigned char *r,
41 unsigned char *s, size_t t, size_t *u)
43 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
46 static int ssl_undefined_function_4(SSL_CONNECTION *sc, int r)
48 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
51 static size_t ssl_undefined_function_5(SSL_CONNECTION *sc, const char *r,
52 size_t s, unsigned char *t)
54 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
57 static int ssl_undefined_function_6(int r)
59 return ssl_undefined_function(NULL);
62 static int ssl_undefined_function_7(SSL_CONNECTION *sc, unsigned char *r,
63 size_t s, const char *t, size_t u,
64 const unsigned char *v, size_t w, int x)
66 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
69 static int ssl_undefined_function_8(SSL_CONNECTION *sc)
71 return ssl_undefined_function(SSL_CONNECTION_GET_SSL(sc));
74 SSL3_ENC_METHOD ssl3_undef_enc_method = {
75 ssl_undefined_function_1,
76 ssl_undefined_function_2,
77 ssl_undefined_function_8,
78 ssl_undefined_function_3,
79 ssl_undefined_function_4,
80 ssl_undefined_function_5,
81 NULL, /* client_finished_label */
82 0, /* client_finished_label_len */
83 NULL, /* server_finished_label */
84 0, /* server_finished_label_len */
85 ssl_undefined_function_6,
86 ssl_undefined_function_7,
89 struct ssl_async_args {
93 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
95 int (*func_read) (SSL *, void *, size_t, size_t *);
96 int (*func_write) (SSL *, const void *, size_t, size_t *);
97 int (*func_other) (SSL *);
101 static const struct {
107 DANETLS_MATCHING_FULL, 0, NID_undef
110 DANETLS_MATCHING_2256, 1, NID_sha256
113 DANETLS_MATCHING_2512, 2, NID_sha512
117 static int dane_ctx_enable(struct dane_ctx_st *dctx)
119 const EVP_MD **mdevp;
121 uint8_t mdmax = DANETLS_MATCHING_LAST;
122 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
125 if (dctx->mdevp != NULL)
128 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
129 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
131 if (mdord == NULL || mdevp == NULL) {
134 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
138 /* Install default entries */
139 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
142 if (dane_mds[i].nid == NID_undef ||
143 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
145 mdevp[dane_mds[i].mtype] = md;
146 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
156 static void dane_ctx_final(struct dane_ctx_st *dctx)
158 OPENSSL_free(dctx->mdevp);
161 OPENSSL_free(dctx->mdord);
166 static void tlsa_free(danetls_record *t)
170 OPENSSL_free(t->data);
171 EVP_PKEY_free(t->spki);
175 static void dane_final(SSL_DANE *dane)
177 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
180 OSSL_STACK_OF_X509_free(dane->certs);
183 X509_free(dane->mcert);
191 * dane_copy - Copy dane configuration, sans verification state.
193 static int ssl_dane_dup(SSL_CONNECTION *to, SSL_CONNECTION *from)
198 if (!DANETLS_ENABLED(&from->dane))
201 num = sk_danetls_record_num(from->dane.trecs);
202 dane_final(&to->dane);
203 to->dane.flags = from->dane.flags;
204 to->dane.dctx = &SSL_CONNECTION_GET_CTX(to)->dane;
205 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
207 if (to->dane.trecs == NULL) {
208 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
212 for (i = 0; i < num; ++i) {
213 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
215 if (SSL_dane_tlsa_add(SSL_CONNECTION_GET_SSL(to), t->usage,
216 t->selector, t->mtype, t->data, t->dlen) <= 0)
222 static int dane_mtype_set(struct dane_ctx_st *dctx,
223 const EVP_MD *md, uint8_t mtype, uint8_t ord)
227 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
228 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
232 if (mtype > dctx->mdmax) {
233 const EVP_MD **mdevp;
235 int n = ((int)mtype) + 1;
237 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
239 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
244 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
246 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
251 /* Zero-fill any gaps */
252 for (i = dctx->mdmax + 1; i < mtype; ++i) {
260 dctx->mdevp[mtype] = md;
261 /* Coerce ordinal of disabled matching types to 0 */
262 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
267 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
269 if (mtype > dane->dctx->mdmax)
271 return dane->dctx->mdevp[mtype];
274 static int dane_tlsa_add(SSL_DANE *dane,
277 uint8_t mtype, const unsigned char *data, size_t dlen)
280 const EVP_MD *md = NULL;
281 int ilen = (int)dlen;
285 if (dane->trecs == NULL) {
286 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_NOT_ENABLED);
290 if (ilen < 0 || dlen != (size_t)ilen) {
291 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
295 if (usage > DANETLS_USAGE_LAST) {
296 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
300 if (selector > DANETLS_SELECTOR_LAST) {
301 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_SELECTOR);
305 if (mtype != DANETLS_MATCHING_FULL) {
306 md = tlsa_md_get(dane, mtype);
308 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
313 if (md != NULL && dlen != (size_t)EVP_MD_get_size(md)) {
314 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
318 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_NULL_DATA);
322 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
323 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
328 t->selector = selector;
330 t->data = OPENSSL_malloc(dlen);
331 if (t->data == NULL) {
333 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
336 memcpy(t->data, data, dlen);
339 /* Validate and cache full certificate or public key */
340 if (mtype == DANETLS_MATCHING_FULL) {
341 const unsigned char *p = data;
343 EVP_PKEY *pkey = NULL;
346 case DANETLS_SELECTOR_CERT:
347 if (!d2i_X509(&cert, &p, ilen) || p < data ||
348 dlen != (size_t)(p - data)) {
350 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
353 if (X509_get0_pubkey(cert) == NULL) {
355 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
359 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
365 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
366 * records that contain full certificates of trust-anchors that are
367 * not present in the wire chain. For usage PKIX-TA(0), we augment
368 * the chain with untrusted Full(0) certificates from DNS, in case
369 * they are missing from the chain.
371 if ((dane->certs == NULL &&
372 (dane->certs = sk_X509_new_null()) == NULL) ||
373 !sk_X509_push(dane->certs, cert)) {
374 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
381 case DANETLS_SELECTOR_SPKI:
382 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
383 dlen != (size_t)(p - data)) {
385 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
390 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
391 * records that contain full bare keys of trust-anchors that are
392 * not present in the wire chain.
394 if (usage == DANETLS_USAGE_DANE_TA)
403 * Find the right insertion point for the new record.
405 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
406 * they can be processed first, as they require no chain building, and no
407 * expiration or hostname checks. Because DANE-EE(3) is numerically
408 * largest, this is accomplished via descending sort by "usage".
410 * We also sort in descending order by matching ordinal to simplify
411 * the implementation of digest agility in the verification code.
413 * The choice of order for the selector is not significant, so we
414 * use the same descending order for consistency.
416 num = sk_danetls_record_num(dane->trecs);
417 for (i = 0; i < num; ++i) {
418 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
420 if (rec->usage > usage)
422 if (rec->usage < usage)
424 if (rec->selector > selector)
426 if (rec->selector < selector)
428 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
433 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
435 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
438 dane->umask |= DANETLS_USAGE_BIT(usage);
444 * Return 0 if there is only one version configured and it was disabled
445 * at configure time. Return 1 otherwise.
447 static int ssl_check_allowed_versions(int min_version, int max_version)
449 int minisdtls = 0, maxisdtls = 0;
451 /* Figure out if we're doing DTLS versions or TLS versions */
452 if (min_version == DTLS1_BAD_VER
453 || min_version >> 8 == DTLS1_VERSION_MAJOR)
455 if (max_version == DTLS1_BAD_VER
456 || max_version >> 8 == DTLS1_VERSION_MAJOR)
458 /* A wildcard version of 0 could be DTLS or TLS. */
459 if ((minisdtls && !maxisdtls && max_version != 0)
460 || (maxisdtls && !minisdtls && min_version != 0)) {
461 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
465 if (minisdtls || maxisdtls) {
466 /* Do DTLS version checks. */
467 if (min_version == 0)
468 /* Ignore DTLS1_BAD_VER */
469 min_version = DTLS1_VERSION;
470 if (max_version == 0)
471 max_version = DTLS1_2_VERSION;
472 #ifdef OPENSSL_NO_DTLS1_2
473 if (max_version == DTLS1_2_VERSION)
474 max_version = DTLS1_VERSION;
476 #ifdef OPENSSL_NO_DTLS1
477 if (min_version == DTLS1_VERSION)
478 min_version = DTLS1_2_VERSION;
480 /* Done massaging versions; do the check. */
482 #ifdef OPENSSL_NO_DTLS1
483 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
484 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
486 #ifdef OPENSSL_NO_DTLS1_2
487 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
488 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
493 /* Regular TLS version checks. */
494 if (min_version == 0)
495 min_version = SSL3_VERSION;
496 if (max_version == 0)
497 max_version = TLS1_3_VERSION;
498 #ifdef OPENSSL_NO_TLS1_3
499 if (max_version == TLS1_3_VERSION)
500 max_version = TLS1_2_VERSION;
502 #ifdef OPENSSL_NO_TLS1_2
503 if (max_version == TLS1_2_VERSION)
504 max_version = TLS1_1_VERSION;
506 #ifdef OPENSSL_NO_TLS1_1
507 if (max_version == TLS1_1_VERSION)
508 max_version = TLS1_VERSION;
510 #ifdef OPENSSL_NO_TLS1
511 if (max_version == TLS1_VERSION)
512 max_version = SSL3_VERSION;
514 #ifdef OPENSSL_NO_SSL3
515 if (min_version == SSL3_VERSION)
516 min_version = TLS1_VERSION;
518 #ifdef OPENSSL_NO_TLS1
519 if (min_version == TLS1_VERSION)
520 min_version = TLS1_1_VERSION;
522 #ifdef OPENSSL_NO_TLS1_1
523 if (min_version == TLS1_1_VERSION)
524 min_version = TLS1_2_VERSION;
526 #ifdef OPENSSL_NO_TLS1_2
527 if (min_version == TLS1_2_VERSION)
528 min_version = TLS1_3_VERSION;
530 /* Done massaging versions; do the check. */
532 #ifdef OPENSSL_NO_SSL3
533 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
535 #ifdef OPENSSL_NO_TLS1
536 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
538 #ifdef OPENSSL_NO_TLS1_1
539 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
541 #ifdef OPENSSL_NO_TLS1_2
542 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
544 #ifdef OPENSSL_NO_TLS1_3
545 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
553 #if defined(__TANDEM) && defined(OPENSSL_VPROC)
555 * Define a VPROC function for HP NonStop build ssl library.
556 * This is used by platform version identification tools.
557 * Do not inline this procedure or make it static.
559 # define OPENSSL_VPROC_STRING_(x) x##_SSL
560 # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
561 # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
562 void OPENSSL_VPROC_FUNC(void) {}
566 static void clear_ciphers(SSL_CONNECTION *s)
568 /* clear the current cipher */
569 ssl_clear_cipher_ctx(s);
570 ssl_clear_hash_ctx(&s->read_hash);
571 ssl_clear_hash_ctx(&s->write_hash);
574 int SSL_clear(SSL *s)
576 if (s->method == NULL) {
577 ERR_raise(ERR_LIB_SSL, SSL_R_NO_METHOD_SPECIFIED);
581 return s->method->ssl_reset(s);
584 int ossl_ssl_connection_reset(SSL *s)
586 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
591 if (ssl_clear_bad_session(sc)) {
592 SSL_SESSION_free(sc->session);
595 SSL_SESSION_free(sc->psksession);
596 sc->psksession = NULL;
597 OPENSSL_free(sc->psksession_id);
598 sc->psksession_id = NULL;
599 sc->psksession_id_len = 0;
600 sc->hello_retry_request = 0;
601 sc->sent_tickets = 0;
607 if (sc->renegotiate) {
608 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
612 ossl_statem_clear(sc);
614 /* TODO(QUIC): Version handling not yet clear */
615 sc->version = s->method->version;
616 sc->client_version = sc->version;
617 sc->rwstate = SSL_NOTHING;
619 BUF_MEM_free(sc->init_buf);
622 sc->first_packet = 0;
624 sc->key_update = SSL_KEY_UPDATE_NONE;
626 EVP_MD_CTX_free(sc->pha_dgst);
629 /* Reset DANE verification result state */
632 X509_free(sc->dane.mcert);
633 sc->dane.mcert = NULL;
634 sc->dane.mtlsa = NULL;
636 /* Clear the verification result peername */
637 X509_VERIFY_PARAM_move_peername(sc->param, NULL);
639 /* Clear any shared connection state */
640 OPENSSL_free(sc->shared_sigalgs);
641 sc->shared_sigalgs = NULL;
642 sc->shared_sigalgslen = 0;
645 * Check to see if we were changed into a different method, if so, revert
648 if (s->method != SSL_CONNECTION_GET_CTX(sc)->method) {
649 s->method->ssl_deinit(s);
650 s->method = SSL_CONNECTION_GET_CTX(sc)->method;
651 if (!s->method->ssl_init(s))
654 if (!s->method->ssl_clear(s))
658 RECORD_LAYER_clear(&sc->rlayer);
660 if (sc->rrlmethod != NULL)
661 sc->rrlmethod->free(sc->rrl);
664 * TODO(RECLAYER): This assignment should probably initialy come from the
665 * SSL_METHOD, and potentially be updated later. For now though we just
668 if (SSL_CONNECTION_IS_DTLS(sc))
669 sc->rrlmethod = &ossl_dtls_record_method;
671 sc->rrlmethod = &ossl_tls_record_method;
673 sc->rrl = sc->rrlmethod->new_record_layer(s->ctx->libctx, s->ctx->propq,
674 TLS_ANY_VERSION, sc->server,
675 OSSL_RECORD_DIRECTION_READ,
676 OSSL_RECORD_PROTECTION_LEVEL_NONE,
677 NULL, 0, NULL, 0, NULL, 0, NULL, 0,
678 NID_undef, NULL, NULL, sc->rbio,
679 NULL, NULL, NULL, NULL, sc);
680 if (sc->rrl == NULL) {
681 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
688 #ifndef OPENSSL_NO_DEPRECATED_3_0
689 /** Used to change an SSL_CTXs default SSL method type */
690 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
692 STACK_OF(SSL_CIPHER) *sk;
696 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
697 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
700 sk = ssl_create_cipher_list(ctx,
701 ctx->tls13_ciphersuites,
703 &(ctx->cipher_list_by_id),
704 OSSL_default_cipher_list(), ctx->cert);
705 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
706 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
713 SSL *SSL_new(SSL_CTX *ctx)
716 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
719 if (ctx->method == NULL) {
720 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
723 return ctx->method->ssl_new(ctx);
726 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
731 ssl->lock = CRYPTO_THREAD_lock_new();
732 if (ssl->lock == NULL)
738 ssl->method = ctx->method;
740 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
746 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
751 s = OPENSSL_zalloc(sizeof(*s));
756 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
762 #ifndef OPENSSL_NO_QUIC
763 /* set the parent (user visible) ssl to self */
767 RECORD_LAYER_init(&s->rlayer, s);
769 s->options = ctx->options;
770 s->dane.flags = ctx->dane.flags;
771 s->min_proto_version = ctx->min_proto_version;
772 s->max_proto_version = ctx->max_proto_version;
774 s->max_cert_list = ctx->max_cert_list;
775 s->max_early_data = ctx->max_early_data;
776 s->recv_max_early_data = ctx->recv_max_early_data;
777 s->num_tickets = ctx->num_tickets;
778 s->pha_enabled = ctx->pha_enabled;
780 /* Shallow copy of the ciphersuites stack */
781 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
782 if (s->tls13_ciphersuites == NULL)
786 * Earlier library versions used to copy the pointer to the CERT, not
787 * its contents; only when setting new parameters for the per-SSL
788 * copy, ssl_cert_new would be called (and the direct reference to
789 * the per-SSL_CTX settings would be lost, but those still were
790 * indirectly accessed for various purposes, and for that reason they
791 * used to be known as s->ctx->default_cert). Now we don't look at the
792 * SSL_CTX's CERT after having duplicated it once.
794 s->cert = ssl_cert_dup(ctx->cert);
798 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
799 s->msg_callback = ctx->msg_callback;
800 s->msg_callback_arg = ctx->msg_callback_arg;
801 s->verify_mode = ctx->verify_mode;
802 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
803 s->record_padding_cb = ctx->record_padding_cb;
804 s->record_padding_arg = ctx->record_padding_arg;
805 s->block_padding = ctx->block_padding;
806 s->sid_ctx_length = ctx->sid_ctx_length;
807 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
809 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
810 s->verify_callback = ctx->default_verify_callback;
811 s->generate_session_id = ctx->generate_session_id;
813 s->param = X509_VERIFY_PARAM_new();
814 if (s->param == NULL)
816 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
817 s->quiet_shutdown = ctx->quiet_shutdown;
819 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
820 s->max_send_fragment = ctx->max_send_fragment;
821 s->split_send_fragment = ctx->split_send_fragment;
822 s->max_pipelines = ctx->max_pipelines;
823 if (s->max_pipelines > 1)
824 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
825 if (ctx->default_read_buf_len > 0)
826 SSL_set_default_read_buffer_len(ssl, ctx->default_read_buf_len);
829 s->ext.debug_arg = NULL;
830 s->ext.ticket_expected = 0;
831 s->ext.status_type = ctx->ext.status_type;
832 s->ext.status_expected = 0;
833 s->ext.ocsp.ids = NULL;
834 s->ext.ocsp.exts = NULL;
835 s->ext.ocsp.resp = NULL;
836 s->ext.ocsp.resp_len = 0;
838 s->session_ctx = ctx;
839 if (ctx->ext.ecpointformats) {
840 s->ext.ecpointformats =
841 OPENSSL_memdup(ctx->ext.ecpointformats,
842 ctx->ext.ecpointformats_len);
843 if (!s->ext.ecpointformats) {
844 s->ext.ecpointformats_len = 0;
847 s->ext.ecpointformats_len =
848 ctx->ext.ecpointformats_len;
850 if (ctx->ext.supportedgroups) {
851 s->ext.supportedgroups =
852 OPENSSL_memdup(ctx->ext.supportedgroups,
853 ctx->ext.supportedgroups_len
854 * sizeof(*ctx->ext.supportedgroups));
855 if (!s->ext.supportedgroups) {
856 s->ext.supportedgroups_len = 0;
859 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
862 #ifndef OPENSSL_NO_NEXTPROTONEG
866 if (ctx->ext.alpn != NULL) {
867 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
868 if (s->ext.alpn == NULL) {
872 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
873 s->ext.alpn_len = ctx->ext.alpn_len;
876 s->verified_chain = NULL;
877 s->verify_result = X509_V_OK;
879 s->default_passwd_callback = ctx->default_passwd_callback;
880 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
882 s->key_update = SSL_KEY_UPDATE_NONE;
884 s->allow_early_data_cb = ctx->allow_early_data_cb;
885 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
887 if (!ssl->method->ssl_init(ssl))
890 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
895 #ifndef OPENSSL_NO_PSK
896 s->psk_client_callback = ctx->psk_client_callback;
897 s->psk_server_callback = ctx->psk_server_callback;
899 s->psk_find_session_cb = ctx->psk_find_session_cb;
900 s->psk_use_session_cb = ctx->psk_use_session_cb;
902 s->async_cb = ctx->async_cb;
903 s->async_cb_arg = ctx->async_cb_arg;
907 #ifndef OPENSSL_NO_CT
908 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
909 ctx->ct_validation_callback_arg))
916 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
920 int SSL_is_dtls(const SSL *s)
922 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
927 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
930 int SSL_up_ref(SSL *s)
934 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
937 REF_PRINT_COUNT("SSL", s);
938 REF_ASSERT_ISNT(i < 2);
939 return ((i > 1) ? 1 : 0);
942 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
943 unsigned int sid_ctx_len)
945 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
946 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
949 ctx->sid_ctx_length = sid_ctx_len;
950 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
955 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
956 unsigned int sid_ctx_len)
958 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
963 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
964 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
967 sc->sid_ctx_length = sid_ctx_len;
968 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
973 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
975 if (!CRYPTO_THREAD_write_lock(ctx->lock))
977 ctx->generate_session_id = cb;
978 CRYPTO_THREAD_unlock(ctx->lock);
982 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
984 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
986 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
988 sc->generate_session_id = cb;
989 CRYPTO_THREAD_unlock(ssl->lock);
993 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
997 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
998 * we can "construct" a session to give us the desired check - i.e. to
999 * find if there's a session in the hash table that would conflict with
1000 * any new session built out of this id/id_len and the ssl_version in use
1004 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
1006 if (sc == NULL || id_len > sizeof(r.session_id))
1009 r.ssl_version = sc->version;
1010 r.session_id_length = id_len;
1011 memcpy(r.session_id, id, id_len);
1013 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1015 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1016 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1020 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1022 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1025 int SSL_set_purpose(SSL *s, int purpose)
1027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1032 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1035 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1037 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1040 int SSL_set_trust(SSL *s, int trust)
1042 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1047 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1050 int SSL_set1_host(SSL *s, const char *hostname)
1052 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1057 /* If a hostname is provided and parses as an IP address,
1058 * treat it as such. */
1059 if (hostname != NULL
1060 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1063 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1066 int SSL_add1_host(SSL *s, const char *hostname)
1068 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1073 /* If a hostname is provided and parses as an IP address,
1074 * treat it as such. */
1077 ASN1_OCTET_STRING *ip;
1080 ip = a2i_IPADDRESS(hostname);
1082 /* We didn't want it; only to check if it *is* an IP address */
1083 ASN1_OCTET_STRING_free(ip);
1085 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1088 OPENSSL_free(old_ip);
1089 /* There can be only one IP address */
1093 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1097 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1100 void SSL_set_hostflags(SSL *s, unsigned int flags)
1102 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1107 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1110 const char *SSL_get0_peername(SSL *s)
1112 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1117 return X509_VERIFY_PARAM_get0_peername(sc->param);
1120 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1122 return dane_ctx_enable(&ctx->dane);
1125 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1127 unsigned long orig = ctx->dane.flags;
1129 ctx->dane.flags |= flags;
1133 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1135 unsigned long orig = ctx->dane.flags;
1137 ctx->dane.flags &= ~flags;
1141 int SSL_dane_enable(SSL *s, const char *basedomain)
1144 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1150 if (s->ctx->dane.mdmax == 0) {
1151 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1154 if (dane->trecs != NULL) {
1155 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1160 * Default SNI name. This rejects empty names, while set1_host below
1161 * accepts them and disables host name checks. To avoid side-effects with
1162 * invalid input, set the SNI name first.
1164 if (sc->ext.hostname == NULL) {
1165 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1166 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1171 /* Primary RFC6125 reference identifier */
1172 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1173 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1179 dane->dctx = &s->ctx->dane;
1180 dane->trecs = sk_danetls_record_new_null();
1182 if (dane->trecs == NULL) {
1183 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1189 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1192 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1197 orig = sc->dane.flags;
1199 sc->dane.flags |= flags;
1203 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1206 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1211 orig = sc->dane.flags;
1213 sc->dane.flags &= ~flags;
1217 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1220 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1227 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1231 *mcert = dane->mcert;
1233 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1238 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1239 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1242 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1249 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1253 *usage = dane->mtlsa->usage;
1255 *selector = dane->mtlsa->selector;
1257 *mtype = dane->mtlsa->mtype;
1259 *data = dane->mtlsa->data;
1261 *dlen = dane->mtlsa->dlen;
1266 SSL_DANE *SSL_get0_dane(SSL *s)
1268 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1276 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1277 uint8_t mtype, const unsigned char *data, size_t dlen)
1279 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1284 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1287 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1290 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1293 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1295 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1298 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1300 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1305 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1308 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1313 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1315 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1323 void SSL_certs_clear(SSL *s)
1325 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1330 ssl_cert_clear_certs(sc->cert);
1333 void SSL_free(SSL *s)
1339 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1340 REF_PRINT_COUNT("SSL", s);
1343 REF_ASSERT_ISNT(i < 0);
1345 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1347 if (s->method != NULL)
1348 s->method->ssl_free(s);
1350 SSL_CTX_free(s->ctx);
1351 CRYPTO_THREAD_lock_free(s->lock);
1356 void ossl_ssl_connection_free(SSL *ssl)
1360 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1364 X509_VERIFY_PARAM_free(s->param);
1365 dane_final(&s->dane);
1367 RECORD_LAYER_release(&s->rlayer);
1369 /* Ignore return value */
1370 ssl_free_wbio_buffer(s);
1372 BIO_free_all(s->wbio);
1374 BIO_free_all(s->rbio);
1377 BUF_MEM_free(s->init_buf);
1379 /* add extra stuff */
1380 sk_SSL_CIPHER_free(s->cipher_list);
1381 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1382 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1383 sk_SSL_CIPHER_free(s->peer_ciphers);
1385 /* Make the next call work :-) */
1386 if (s->session != NULL) {
1387 ssl_clear_bad_session(s);
1388 SSL_SESSION_free(s->session);
1390 SSL_SESSION_free(s->psksession);
1391 OPENSSL_free(s->psksession_id);
1395 ssl_cert_free(s->cert);
1396 OPENSSL_free(s->shared_sigalgs);
1397 /* Free up if allocated */
1399 OPENSSL_free(s->ext.hostname);
1400 SSL_CTX_free(s->session_ctx);
1401 OPENSSL_free(s->ext.ecpointformats);
1402 OPENSSL_free(s->ext.peer_ecpointformats);
1403 OPENSSL_free(s->ext.supportedgroups);
1404 OPENSSL_free(s->ext.peer_supportedgroups);
1405 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1406 #ifndef OPENSSL_NO_OCSP
1407 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1409 #ifndef OPENSSL_NO_CT
1410 SCT_LIST_free(s->scts);
1411 OPENSSL_free(s->ext.scts);
1413 OPENSSL_free(s->ext.ocsp.resp);
1414 OPENSSL_free(s->ext.alpn);
1415 OPENSSL_free(s->ext.tls13_cookie);
1416 if (s->clienthello != NULL)
1417 OPENSSL_free(s->clienthello->pre_proc_exts);
1418 OPENSSL_free(s->clienthello);
1419 OPENSSL_free(s->pha_context);
1420 EVP_MD_CTX_free(s->pha_dgst);
1422 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1423 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1425 OSSL_STACK_OF_X509_free(s->verified_chain);
1427 if (ssl->method != NULL)
1428 ssl->method->ssl_deinit(ssl);
1430 ASYNC_WAIT_CTX_free(s->waitctx);
1432 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1433 OPENSSL_free(s->ext.npn);
1436 #ifndef OPENSSL_NO_SRTP
1437 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1441 void SSL_set0_rbio(SSL *s, BIO *rbio)
1443 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1448 BIO_free_all(sc->rbio);
1450 sc->rrlmethod->set1_bio(sc->rrl, sc->rbio);
1453 void SSL_set0_wbio(SSL *s, BIO *wbio)
1455 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1461 * If the output buffering BIO is still in place, remove it
1463 if (sc->bbio != NULL)
1464 sc->wbio = BIO_pop(sc->wbio);
1466 BIO_free_all(sc->wbio);
1469 /* Re-attach |bbio| to the new |wbio|. */
1470 if (sc->bbio != NULL)
1471 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1474 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1477 * For historical reasons, this function has many different cases in
1478 * ownership handling.
1481 /* If nothing has changed, do nothing */
1482 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1486 * If the two arguments are equal then one fewer reference is granted by the
1487 * caller than we want to take
1489 if (rbio != NULL && rbio == wbio)
1493 * If only the wbio is changed only adopt one reference.
1495 if (rbio == SSL_get_rbio(s)) {
1496 SSL_set0_wbio(s, wbio);
1500 * There is an asymmetry here for historical reasons. If only the rbio is
1501 * changed AND the rbio and wbio were originally different, then we only
1502 * adopt one reference.
1504 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1505 SSL_set0_rbio(s, rbio);
1509 /* Otherwise, adopt both references. */
1510 SSL_set0_rbio(s, rbio);
1511 SSL_set0_wbio(s, wbio);
1514 BIO *SSL_get_rbio(const SSL *s)
1516 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1524 BIO *SSL_get_wbio(const SSL *s)
1526 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1531 if (sc->bbio != NULL) {
1533 * If |bbio| is active, the true caller-configured BIO is its
1536 return BIO_next(sc->bbio);
1541 int SSL_get_fd(const SSL *s)
1543 return SSL_get_rfd(s);
1546 int SSL_get_rfd(const SSL *s)
1551 b = SSL_get_rbio(s);
1552 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1554 BIO_get_fd(r, &ret);
1558 int SSL_get_wfd(const SSL *s)
1563 b = SSL_get_wbio(s);
1564 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1566 BIO_get_fd(r, &ret);
1570 #ifndef OPENSSL_NO_SOCK
1571 int SSL_set_fd(SSL *s, int fd)
1576 bio = BIO_new(BIO_s_socket());
1579 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1582 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1583 SSL_set_bio(s, bio, bio);
1584 #ifndef OPENSSL_NO_KTLS
1586 * The new socket is created successfully regardless of ktls_enable.
1587 * ktls_enable doesn't change any functionality of the socket, except
1588 * changing the setsockopt to enable the processing of ktls_start.
1589 * Thus, it is not a problem to call it for non-TLS sockets.
1592 #endif /* OPENSSL_NO_KTLS */
1598 int SSL_set_wfd(SSL *s, int fd)
1600 BIO *rbio = SSL_get_rbio(s);
1602 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1603 || (int)BIO_get_fd(rbio, NULL) != fd) {
1604 BIO *bio = BIO_new(BIO_s_socket());
1607 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1610 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1611 SSL_set0_wbio(s, bio);
1612 #ifndef OPENSSL_NO_KTLS
1614 * The new socket is created successfully regardless of ktls_enable.
1615 * ktls_enable doesn't change any functionality of the socket, except
1616 * changing the setsockopt to enable the processing of ktls_start.
1617 * Thus, it is not a problem to call it for non-TLS sockets.
1620 #endif /* OPENSSL_NO_KTLS */
1623 SSL_set0_wbio(s, rbio);
1628 int SSL_set_rfd(SSL *s, int fd)
1630 BIO *wbio = SSL_get_wbio(s);
1632 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1633 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1634 BIO *bio = BIO_new(BIO_s_socket());
1637 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1640 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1641 SSL_set0_rbio(s, bio);
1644 SSL_set0_rbio(s, wbio);
1651 /* return length of latest Finished message we sent, copy to 'buf' */
1652 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1655 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1660 ret = sc->s3.tmp.finish_md_len;
1663 memcpy(buf, sc->s3.tmp.finish_md, count);
1667 /* return length of latest Finished message we expected, copy to 'buf' */
1668 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1671 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1676 ret = sc->s3.tmp.peer_finish_md_len;
1679 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1683 int SSL_get_verify_mode(const SSL *s)
1685 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1690 return sc->verify_mode;
1693 int SSL_get_verify_depth(const SSL *s)
1695 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1700 return X509_VERIFY_PARAM_get_depth(sc->param);
1703 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1704 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1709 return sc->verify_callback;
1712 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1714 return ctx->verify_mode;
1717 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1719 return X509_VERIFY_PARAM_get_depth(ctx->param);
1722 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1723 return ctx->default_verify_callback;
1726 void SSL_set_verify(SSL *s, int mode,
1727 int (*callback) (int ok, X509_STORE_CTX *ctx))
1729 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1734 sc->verify_mode = mode;
1735 if (callback != NULL)
1736 sc->verify_callback = callback;
1739 void SSL_set_verify_depth(SSL *s, int depth)
1741 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1746 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1749 void SSL_set_read_ahead(SSL *s, int yes)
1751 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1756 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1759 int SSL_get_read_ahead(const SSL *s)
1761 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1766 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1769 int SSL_pending(const SSL *s)
1771 size_t pending = s->method->ssl_pending(s);
1774 * SSL_pending cannot work properly if read-ahead is enabled
1775 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1776 * impossible to fix since SSL_pending cannot report errors that may be
1777 * observed while scanning the new data. (Note that SSL_pending() is
1778 * often used as a boolean value, so we'd better not return -1.)
1780 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1781 * we just return INT_MAX.
1783 return pending < INT_MAX ? (int)pending : INT_MAX;
1786 int SSL_has_pending(const SSL *s)
1789 * Similar to SSL_pending() but returns a 1 to indicate that we have
1790 * processed or unprocessed data available or 0 otherwise (as opposed to the
1791 * number of bytes available). Unlike SSL_pending() this will take into
1792 * account read_ahead data. A 1 return simply indicates that we have data.
1793 * That data may not result in any application data, or we may fail to parse
1794 * the records for some reason.
1796 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1798 /* Check buffered app data if any first */
1799 if (SSL_CONNECTION_IS_DTLS(sc)) {
1800 DTLS1_RECORD_DATA *rdata;
1803 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1804 while ((item = pqueue_next(&iter)) != NULL) {
1806 if (rdata->rrec.length > 0)
1811 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1814 return RECORD_LAYER_read_pending(&sc->rlayer);
1817 X509 *SSL_get1_peer_certificate(const SSL *s)
1819 X509 *r = SSL_get0_peer_certificate(s);
1827 X509 *SSL_get0_peer_certificate(const SSL *s)
1829 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1834 if (sc->session == NULL)
1837 return sc->session->peer;
1840 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1843 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1848 if (sc->session == NULL)
1851 r = sc->session->peer_chain;
1854 * If we are a client, cert_chain includes the peer's own certificate; if
1855 * we are a server, it does not.
1862 * Now in theory, since the calling process own 't' it should be safe to
1863 * modify. We need to be able to read f without being hassled
1865 int SSL_copy_session_id(SSL *t, const SSL *f)
1868 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1869 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1870 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1872 if (tsc == NULL || fsc == NULL)
1875 /* Do we need to do SSL locking? */
1876 if (!SSL_set_session(t, SSL_get_session(f))) {
1881 * what if we are setup for one protocol version but want to talk another
1883 if (t->method != f->method) {
1884 t->method->ssl_deinit(t);
1885 t->method = f->method;
1886 if (t->method->ssl_init(t) == 0)
1890 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1891 ssl_cert_free(tsc->cert);
1892 tsc->cert = fsc->cert;
1893 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1900 /* Fix this so it checks all the valid key/cert options */
1901 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1903 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1904 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1907 if (ctx->cert->key->privatekey == NULL) {
1908 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1911 return X509_check_private_key
1912 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1915 /* Fix this function so that it takes an optional type parameter */
1916 int SSL_check_private_key(const SSL *ssl)
1918 const SSL_CONNECTION *sc;
1920 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1921 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1924 if (sc->cert->key->x509 == NULL) {
1925 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1928 if (sc->cert->key->privatekey == NULL) {
1929 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1932 return X509_check_private_key(sc->cert->key->x509,
1933 sc->cert->key->privatekey);
1936 int SSL_waiting_for_async(SSL *s)
1938 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1949 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1951 ASYNC_WAIT_CTX *ctx;
1952 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1957 if ((ctx = sc->waitctx) == NULL)
1959 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1962 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1963 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1965 ASYNC_WAIT_CTX *ctx;
1966 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1971 if ((ctx = sc->waitctx) == NULL)
1973 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1977 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1979 ctx->async_cb = callback;
1983 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1985 ctx->async_cb_arg = arg;
1989 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1991 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1996 sc->async_cb = callback;
2000 int SSL_set_async_callback_arg(SSL *s, void *arg)
2002 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2007 sc->async_cb_arg = arg;
2011 int SSL_get_async_status(SSL *s, int *status)
2013 ASYNC_WAIT_CTX *ctx;
2014 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2019 if ((ctx = sc->waitctx) == NULL)
2021 *status = ASYNC_WAIT_CTX_get_status(ctx);
2025 int SSL_accept(SSL *s)
2027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2032 if (sc->handshake_func == NULL) {
2033 /* Not properly initialized yet */
2034 SSL_set_accept_state(s);
2037 return SSL_do_handshake(s);
2040 int SSL_connect(SSL *s)
2042 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2047 if (sc->handshake_func == NULL) {
2048 /* Not properly initialized yet */
2049 SSL_set_connect_state(s);
2052 return SSL_do_handshake(s);
2055 long SSL_get_default_timeout(const SSL *s)
2057 return s->method->get_timeout();
2060 static int ssl_async_wait_ctx_cb(void *arg)
2062 SSL *s = (SSL *)arg;
2063 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2068 return sc->async_cb(s, sc->async_cb_arg);
2071 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2072 int (*func) (void *))
2075 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2080 if (sc->waitctx == NULL) {
2081 sc->waitctx = ASYNC_WAIT_CTX_new();
2082 if (sc->waitctx == NULL)
2084 if (sc->async_cb != NULL
2085 && !ASYNC_WAIT_CTX_set_callback
2086 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2090 sc->rwstate = SSL_NOTHING;
2091 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2092 sizeof(struct ssl_async_args))) {
2094 sc->rwstate = SSL_NOTHING;
2095 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2098 sc->rwstate = SSL_ASYNC_PAUSED;
2101 sc->rwstate = SSL_ASYNC_NO_JOBS;
2107 sc->rwstate = SSL_NOTHING;
2108 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2109 /* Shouldn't happen */
2114 static int ssl_io_intern(void *vargs)
2116 struct ssl_async_args *args;
2122 args = (struct ssl_async_args *)vargs;
2126 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2129 switch (args->type) {
2131 return args->f.func_read(s, buf, num, &sc->asyncrw);
2133 return args->f.func_write(s, buf, num, &sc->asyncrw);
2135 return args->f.func_other(s);
2140 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2142 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2147 if (sc->handshake_func == NULL) {
2148 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2152 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2153 sc->rwstate = SSL_NOTHING;
2157 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2158 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2159 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2163 * If we are a client and haven't received the ServerHello etc then we
2166 ossl_statem_check_finish_init(sc, 0);
2168 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2169 struct ssl_async_args args;
2175 args.type = READFUNC;
2176 args.f.func_read = s->method->ssl_read;
2178 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2179 *readbytes = sc->asyncrw;
2182 return s->method->ssl_read(s, buf, num, readbytes);
2186 int SSL_read(SSL *s, void *buf, int num)
2192 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2196 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2199 * The cast is safe here because ret should be <= INT_MAX because num is
2203 ret = (int)readbytes;
2208 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2210 int ret = ssl_read_internal(s, buf, num, readbytes);
2217 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2220 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2222 /* TODO(QUIC): This will need special handling for QUIC */
2227 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2228 return SSL_READ_EARLY_DATA_ERROR;
2231 switch (sc->early_data_state) {
2232 case SSL_EARLY_DATA_NONE:
2233 if (!SSL_in_before(s)) {
2234 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2235 return SSL_READ_EARLY_DATA_ERROR;
2239 case SSL_EARLY_DATA_ACCEPT_RETRY:
2240 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2241 ret = SSL_accept(s);
2244 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2245 return SSL_READ_EARLY_DATA_ERROR;
2249 case SSL_EARLY_DATA_READ_RETRY:
2250 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2251 sc->early_data_state = SSL_EARLY_DATA_READING;
2252 ret = SSL_read_ex(s, buf, num, readbytes);
2254 * State machine will update early_data_state to
2255 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2258 if (ret > 0 || (ret <= 0 && sc->early_data_state
2259 != SSL_EARLY_DATA_FINISHED_READING)) {
2260 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2261 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2262 : SSL_READ_EARLY_DATA_ERROR;
2265 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2268 return SSL_READ_EARLY_DATA_FINISH;
2271 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2272 return SSL_READ_EARLY_DATA_ERROR;
2276 int SSL_get_early_data_status(const SSL *s)
2278 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2280 /* TODO(QUIC): This will need special handling for QUIC */
2284 return sc->ext.early_data;
2287 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2289 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2294 if (sc->handshake_func == NULL) {
2295 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2299 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2302 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2303 struct ssl_async_args args;
2309 args.type = READFUNC;
2310 args.f.func_read = s->method->ssl_peek;
2312 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2313 *readbytes = sc->asyncrw;
2316 return s->method->ssl_peek(s, buf, num, readbytes);
2320 int SSL_peek(SSL *s, void *buf, int num)
2326 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2330 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2333 * The cast is safe here because ret should be <= INT_MAX because num is
2337 ret = (int)readbytes;
2343 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2345 int ret = ssl_peek_internal(s, buf, num, readbytes);
2352 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2354 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2359 if (sc->handshake_func == NULL) {
2360 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2364 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2365 sc->rwstate = SSL_NOTHING;
2366 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2370 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2371 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2372 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2373 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2376 /* If we are a client and haven't sent the Finished we better do that */
2377 ossl_statem_check_finish_init(sc, 1);
2379 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2381 struct ssl_async_args args;
2384 args.buf = (void *)buf;
2386 args.type = WRITEFUNC;
2387 args.f.func_write = s->method->ssl_write;
2389 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2390 *written = sc->asyncrw;
2393 return s->method->ssl_write(s, buf, num, written);
2397 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2400 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2405 if (sc->handshake_func == NULL) {
2406 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2410 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2411 sc->rwstate = SSL_NOTHING;
2412 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2416 if (!BIO_get_ktls_send(sc->wbio)) {
2417 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2421 /* If we have an alert to send, lets send it */
2422 if (sc->s3.alert_dispatch) {
2423 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2425 /* SSLfatal() already called if appropriate */
2428 /* if it went, fall through and send more stuff */
2431 sc->rwstate = SSL_WRITING;
2432 if (BIO_flush(sc->wbio) <= 0) {
2433 if (!BIO_should_retry(sc->wbio)) {
2434 sc->rwstate = SSL_NOTHING;
2437 set_sys_error(EAGAIN);
2443 #ifdef OPENSSL_NO_KTLS
2444 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2445 "can't call ktls_sendfile(), ktls disabled");
2448 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2450 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2451 if ((get_last_sys_error() == EAGAIN) ||
2452 (get_last_sys_error() == EINTR) ||
2453 (get_last_sys_error() == EBUSY))
2454 BIO_set_retry_write(sc->wbio);
2457 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2460 sc->rwstate = SSL_NOTHING;
2465 int SSL_write(SSL *s, const void *buf, int num)
2471 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2475 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2478 * The cast is safe here because ret should be <= INT_MAX because num is
2487 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2489 int ret = ssl_write_internal(s, buf, num, written);
2496 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2498 int ret, early_data_state;
2500 uint32_t partialwrite;
2501 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2503 /* TODO(QUIC): This will need special handling for QUIC */
2507 switch (sc->early_data_state) {
2508 case SSL_EARLY_DATA_NONE:
2510 || !SSL_in_before(s)
2511 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2512 && (sc->psk_use_session_cb == NULL))) {
2513 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2518 case SSL_EARLY_DATA_CONNECT_RETRY:
2519 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2520 ret = SSL_connect(s);
2523 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2528 case SSL_EARLY_DATA_WRITE_RETRY:
2529 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2531 * We disable partial write for early data because we don't keep track
2532 * of how many bytes we've written between the SSL_write_ex() call and
2533 * the flush if the flush needs to be retried)
2535 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2536 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2537 ret = SSL_write_ex(s, buf, num, &writtmp);
2538 sc->mode |= partialwrite;
2540 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2543 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2546 case SSL_EARLY_DATA_WRITE_FLUSH:
2547 /* The buffering BIO is still in place so we need to flush it */
2548 if (statem_flush(sc) != 1)
2551 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2554 case SSL_EARLY_DATA_FINISHED_READING:
2555 case SSL_EARLY_DATA_READ_RETRY:
2556 early_data_state = sc->early_data_state;
2557 /* We are a server writing to an unauthenticated client */
2558 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2559 ret = SSL_write_ex(s, buf, num, written);
2560 /* The buffering BIO is still in place */
2562 (void)BIO_flush(sc->wbio);
2563 sc->early_data_state = early_data_state;
2567 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2572 int SSL_shutdown(SSL *s)
2575 * Note that this function behaves differently from what one might
2576 * expect. Return values are 0 for no success (yet), 1 for success; but
2577 * calling it once is usually not enough, even if blocking I/O is used
2578 * (see ssl3_shutdown).
2580 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2585 if (sc->handshake_func == NULL) {
2586 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2590 if (!SSL_in_init(s)) {
2591 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2592 struct ssl_async_args args;
2594 memset(&args, 0, sizeof(args));
2596 args.type = OTHERFUNC;
2597 args.f.func_other = s->method->ssl_shutdown;
2599 return ssl_start_async_job(s, &args, ssl_io_intern);
2601 return s->method->ssl_shutdown(s);
2604 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2609 int SSL_key_update(SSL *s, int updatetype)
2611 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2616 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2617 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2621 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2622 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2623 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2627 if (!SSL_is_init_finished(s)) {
2628 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2632 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2633 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2637 ossl_statem_set_in_init(sc, 1);
2638 sc->key_update = updatetype;
2642 int SSL_get_key_update_type(const SSL *s)
2644 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2649 return sc->key_update;
2653 * Can we accept a renegotiation request? If yes, set the flag and
2654 * return 1 if yes. If not, raise error and return 0.
2656 static int can_renegotiate(const SSL_CONNECTION *sc)
2658 if (SSL_CONNECTION_IS_TLS13(sc)) {
2659 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2663 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2664 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2671 int SSL_renegotiate(SSL *s)
2673 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2678 if (!can_renegotiate(sc))
2681 sc->renegotiate = 1;
2682 sc->new_session = 1;
2683 return s->method->ssl_renegotiate(s);
2686 int SSL_renegotiate_abbreviated(SSL *s)
2688 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2693 if (!can_renegotiate(sc))
2696 sc->renegotiate = 1;
2697 sc->new_session = 0;
2698 return s->method->ssl_renegotiate(s);
2701 int SSL_renegotiate_pending(const SSL *s)
2703 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2709 * becomes true when negotiation is requested; false again once a
2710 * handshake has finished
2712 return (sc->renegotiate != 0);
2715 int SSL_new_session_ticket(SSL *s)
2717 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2722 /* If we are in init because we're sending tickets, okay to send more. */
2723 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2724 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2725 || !SSL_CONNECTION_IS_TLS13(sc))
2727 sc->ext.extra_tickets_expected++;
2728 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2729 ossl_statem_set_in_init(sc, 1);
2733 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2736 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2738 /* TODO(QUIC): Special handling for some ctrls will be needed */
2743 case SSL_CTRL_GET_READ_AHEAD:
2744 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2745 case SSL_CTRL_SET_READ_AHEAD:
2746 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2747 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2750 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2751 sc->msg_callback_arg = parg;
2755 return (sc->mode |= larg);
2756 case SSL_CTRL_CLEAR_MODE:
2757 return (sc->mode &= ~larg);
2758 case SSL_CTRL_GET_MAX_CERT_LIST:
2759 return (long)sc->max_cert_list;
2760 case SSL_CTRL_SET_MAX_CERT_LIST:
2763 l = (long)sc->max_cert_list;
2764 sc->max_cert_list = (size_t)larg;
2766 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2767 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2769 #ifndef OPENSSL_NO_KTLS
2770 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2772 #endif /* OPENSSL_NO_KTLS */
2773 sc->max_send_fragment = larg;
2774 if (sc->max_send_fragment < sc->split_send_fragment)
2775 sc->split_send_fragment = sc->max_send_fragment;
2777 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2778 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2780 sc->split_send_fragment = larg;
2782 case SSL_CTRL_SET_MAX_PIPELINES:
2783 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2785 sc->max_pipelines = larg;
2787 RECORD_LAYER_set_read_ahead(&sc->rlayer, 1);
2789 case SSL_CTRL_GET_RI_SUPPORT:
2790 return sc->s3.send_connection_binding;
2791 case SSL_CTRL_SET_RETRY_VERIFY:
2792 sc->rwstate = SSL_RETRY_VERIFY;
2794 case SSL_CTRL_CERT_FLAGS:
2795 return (sc->cert->cert_flags |= larg);
2796 case SSL_CTRL_CLEAR_CERT_FLAGS:
2797 return (sc->cert->cert_flags &= ~larg);
2799 case SSL_CTRL_GET_RAW_CIPHERLIST:
2801 if (sc->s3.tmp.ciphers_raw == NULL)
2803 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2804 return (int)sc->s3.tmp.ciphers_rawlen;
2806 return TLS_CIPHER_LEN;
2808 case SSL_CTRL_GET_EXTMS_SUPPORT:
2809 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2811 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2815 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2816 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2817 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2818 &sc->min_proto_version);
2819 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2820 return sc->min_proto_version;
2821 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2822 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2823 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2824 &sc->max_proto_version);
2825 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2826 return sc->max_proto_version;
2828 return s->method->ssl_ctrl(s, cmd, larg, parg);
2832 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2834 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2840 case SSL_CTRL_SET_MSG_CALLBACK:
2841 sc->msg_callback = (void (*)
2842 (int write_p, int version, int content_type,
2843 const void *buf, size_t len, SSL *ssl,
2848 return s->method->ssl_callback_ctrl(s, cmd, fp);
2852 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2854 return ctx->sessions;
2857 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2861 if (ssl_tsan_lock(ctx)) {
2862 res = tsan_load(stat);
2863 ssl_tsan_unlock(ctx);
2868 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2871 /* For some cases with ctx == NULL perform syntax checks */
2874 case SSL_CTRL_SET_GROUPS_LIST:
2875 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2876 case SSL_CTRL_SET_SIGALGS_LIST:
2877 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2878 return tls1_set_sigalgs_list(NULL, parg, 0);
2885 case SSL_CTRL_GET_READ_AHEAD:
2886 return ctx->read_ahead;
2887 case SSL_CTRL_SET_READ_AHEAD:
2888 l = ctx->read_ahead;
2889 ctx->read_ahead = larg;
2892 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2893 ctx->msg_callback_arg = parg;
2896 case SSL_CTRL_GET_MAX_CERT_LIST:
2897 return (long)ctx->max_cert_list;
2898 case SSL_CTRL_SET_MAX_CERT_LIST:
2901 l = (long)ctx->max_cert_list;
2902 ctx->max_cert_list = (size_t)larg;
2905 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2908 l = (long)ctx->session_cache_size;
2909 ctx->session_cache_size = (size_t)larg;
2911 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2912 return (long)ctx->session_cache_size;
2913 case SSL_CTRL_SET_SESS_CACHE_MODE:
2914 l = ctx->session_cache_mode;
2915 ctx->session_cache_mode = larg;
2917 case SSL_CTRL_GET_SESS_CACHE_MODE:
2918 return ctx->session_cache_mode;
2920 case SSL_CTRL_SESS_NUMBER:
2921 return lh_SSL_SESSION_num_items(ctx->sessions);
2922 case SSL_CTRL_SESS_CONNECT:
2923 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2924 case SSL_CTRL_SESS_CONNECT_GOOD:
2925 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2926 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2927 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2928 case SSL_CTRL_SESS_ACCEPT:
2929 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2930 case SSL_CTRL_SESS_ACCEPT_GOOD:
2931 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2932 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2933 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2934 case SSL_CTRL_SESS_HIT:
2935 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2936 case SSL_CTRL_SESS_CB_HIT:
2937 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2938 case SSL_CTRL_SESS_MISSES:
2939 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2940 case SSL_CTRL_SESS_TIMEOUTS:
2941 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2942 case SSL_CTRL_SESS_CACHE_FULL:
2943 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2945 return (ctx->mode |= larg);
2946 case SSL_CTRL_CLEAR_MODE:
2947 return (ctx->mode &= ~larg);
2948 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2949 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2951 ctx->max_send_fragment = larg;
2952 if (ctx->max_send_fragment < ctx->split_send_fragment)
2953 ctx->split_send_fragment = ctx->max_send_fragment;
2955 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2956 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2958 ctx->split_send_fragment = larg;
2960 case SSL_CTRL_SET_MAX_PIPELINES:
2961 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2963 ctx->max_pipelines = larg;
2965 case SSL_CTRL_CERT_FLAGS:
2966 return (ctx->cert->cert_flags |= larg);
2967 case SSL_CTRL_CLEAR_CERT_FLAGS:
2968 return (ctx->cert->cert_flags &= ~larg);
2969 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2970 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2971 && ssl_set_version_bound(ctx->method->version, (int)larg,
2972 &ctx->min_proto_version);
2973 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2974 return ctx->min_proto_version;
2975 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2976 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2977 && ssl_set_version_bound(ctx->method->version, (int)larg,
2978 &ctx->max_proto_version);
2979 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2980 return ctx->max_proto_version;
2982 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2986 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2989 case SSL_CTRL_SET_MSG_CALLBACK:
2990 ctx->msg_callback = (void (*)
2991 (int write_p, int version, int content_type,
2992 const void *buf, size_t len, SSL *ssl,
2997 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
3001 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3010 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3011 const SSL_CIPHER *const *bp)
3013 if ((*ap)->id > (*bp)->id)
3015 if ((*ap)->id < (*bp)->id)
3021 * return a STACK of the ciphers available for the SSL and in order of
3024 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3026 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3029 if (sc->cipher_list != NULL) {
3030 return sc->cipher_list;
3031 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3032 return s->ctx->cipher_list;
3038 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3040 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3042 if (sc == NULL || !sc->server)
3044 return sc->peer_ciphers;
3047 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3049 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3051 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3056 ciphers = SSL_get_ciphers(s);
3059 if (!ssl_set_client_disabled(sc))
3061 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3062 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3063 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3065 sk = sk_SSL_CIPHER_new_null();
3068 if (!sk_SSL_CIPHER_push(sk, c)) {
3069 sk_SSL_CIPHER_free(sk);
3077 /** return a STACK of the ciphers available for the SSL and in order of
3079 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3082 if (s->cipher_list_by_id != NULL)
3083 return s->cipher_list_by_id;
3084 else if (s->ssl.ctx != NULL
3085 && s->ssl.ctx->cipher_list_by_id != NULL)
3086 return s->ssl.ctx->cipher_list_by_id;
3091 /** The old interface to get the same thing as SSL_get_ciphers() */
3092 const char *SSL_get_cipher_list(const SSL *s, int n)
3094 const SSL_CIPHER *c;
3095 STACK_OF(SSL_CIPHER) *sk;
3099 sk = SSL_get_ciphers(s);
3100 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3102 c = sk_SSL_CIPHER_value(sk, n);
3108 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3110 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3113 return ctx->cipher_list;
3118 * Distinguish between ciphers controlled by set_ciphersuite() and
3119 * set_cipher_list() when counting.
3121 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3124 const SSL_CIPHER *c;
3128 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3129 c = sk_SSL_CIPHER_value(sk, i);
3130 if (c->min_tls >= TLS1_3_VERSION)
3137 /** specify the ciphers to be used by default by the SSL_CTX */
3138 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3140 STACK_OF(SSL_CIPHER) *sk;
3142 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3143 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3146 * ssl_create_cipher_list may return an empty stack if it was unable to
3147 * find a cipher matching the given rule string (for example if the rule
3148 * string specifies a cipher which has been disabled). This is not an
3149 * error as far as ssl_create_cipher_list is concerned, and hence
3150 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3154 else if (cipher_list_tls12_num(sk) == 0) {
3155 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3161 /** specify the ciphers to be used by the SSL */
3162 int SSL_set_cipher_list(SSL *s, const char *str)
3164 STACK_OF(SSL_CIPHER) *sk;
3165 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3170 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3171 &sc->cipher_list, &sc->cipher_list_by_id, str,
3173 /* see comment in SSL_CTX_set_cipher_list */
3176 else if (cipher_list_tls12_num(sk) == 0) {
3177 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3183 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3186 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3187 const SSL_CIPHER *c;
3189 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3195 || sc->peer_ciphers == NULL
3200 clntsk = sc->peer_ciphers;
3201 srvrsk = SSL_get_ciphers(s);
3202 if (clntsk == NULL || srvrsk == NULL)
3205 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3208 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3211 c = sk_SSL_CIPHER_value(clntsk, i);
3212 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3215 n = strlen(c->name);
3232 * Return the requested servername (SNI) value. Note that the behaviour varies
3234 * - whether this is called by the client or the server,
3235 * - if we are before or during/after the handshake,
3236 * - if a resumption or normal handshake is being attempted/has occurred
3237 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3239 * Note that only the host_name type is defined (RFC 3546).
3241 const char *SSL_get_servername(const SSL *s, const int type)
3243 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3250 * If we don't know if we are the client or the server yet then we assume
3253 server = sc->handshake_func == NULL ? 0 : sc->server;
3255 if (type != TLSEXT_NAMETYPE_host_name)
3261 * In TLSv1.3 on the server SNI is not associated with the session
3262 * but in TLSv1.2 or below it is.
3264 * Before the handshake:
3267 * During/after the handshake (TLSv1.2 or below resumption occurred):
3268 * - If a servername was accepted by the server in the original
3269 * handshake then it will return that servername, or NULL otherwise.
3271 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3272 * - The function will return the servername requested by the client in
3273 * this handshake or NULL if none was requested.
3275 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3276 return sc->session->ext.hostname;
3281 * Before the handshake:
3282 * - If a servername has been set via a call to
3283 * SSL_set_tlsext_host_name() then it will return that servername
3284 * - If one has not been set, but a TLSv1.2 resumption is being
3285 * attempted and the session from the original handshake had a
3286 * servername accepted by the server then it will return that
3288 * - Otherwise it returns NULL
3290 * During/after the handshake (TLSv1.2 or below resumption occurred):
3291 * - If the session from the original handshake had a servername accepted
3292 * by the server then it will return that servername.
3293 * - Otherwise it returns the servername set via
3294 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3296 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3297 * - It will return the servername set via SSL_set_tlsext_host_name()
3298 * (or NULL if it was not called).
3300 if (SSL_in_before(s)) {
3301 if (sc->ext.hostname == NULL
3302 && sc->session != NULL
3303 && sc->session->ssl_version != TLS1_3_VERSION)
3304 return sc->session->ext.hostname;
3306 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3307 && sc->session->ext.hostname != NULL)
3308 return sc->session->ext.hostname;
3312 return sc->ext.hostname;
3315 int SSL_get_servername_type(const SSL *s)
3317 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3318 return TLSEXT_NAMETYPE_host_name;
3323 * SSL_select_next_proto implements the standard protocol selection. It is
3324 * expected that this function is called from the callback set by
3325 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3326 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3327 * not included in the length. A byte string of length 0 is invalid. No byte
3328 * string may be truncated. The current, but experimental algorithm for
3329 * selecting the protocol is: 1) If the server doesn't support NPN then this
3330 * is indicated to the callback. In this case, the client application has to
3331 * abort the connection or have a default application level protocol. 2) If
3332 * the server supports NPN, but advertises an empty list then the client
3333 * selects the first protocol in its list, but indicates via the API that this
3334 * fallback case was enacted. 3) Otherwise, the client finds the first
3335 * protocol in the server's list that it supports and selects this protocol.
3336 * This is because it's assumed that the server has better information about
3337 * which protocol a client should use. 4) If the client doesn't support any
3338 * of the server's advertised protocols, then this is treated the same as
3339 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3340 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3342 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3343 const unsigned char *server,
3344 unsigned int server_len,
3345 const unsigned char *client, unsigned int client_len)
3348 const unsigned char *result;
3349 int status = OPENSSL_NPN_UNSUPPORTED;
3352 * For each protocol in server preference order, see if we support it.
3354 for (i = 0; i < server_len;) {
3355 for (j = 0; j < client_len;) {
3356 if (server[i] == client[j] &&
3357 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3358 /* We found a match */
3359 result = &server[i];
3360 status = OPENSSL_NPN_NEGOTIATED;
3370 /* There's no overlap between our protocols and the server's list. */
3372 status = OPENSSL_NPN_NO_OVERLAP;
3375 *out = (unsigned char *)result + 1;
3376 *outlen = result[0];
3380 #ifndef OPENSSL_NO_NEXTPROTONEG
3382 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3383 * client's requested protocol for this connection and returns 0. If the
3384 * client didn't request any protocol, then *data is set to NULL. Note that
3385 * the client can request any protocol it chooses. The value returned from
3386 * this function need not be a member of the list of supported protocols
3387 * provided by the callback.
3389 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3392 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3395 /* We have no other way to indicate error */
3401 *data = sc->ext.npn;
3402 if (*data == NULL) {
3405 *len = (unsigned int)sc->ext.npn_len;
3410 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3411 * a TLS server needs a list of supported protocols for Next Protocol
3412 * Negotiation. The returned list must be in wire format. The list is
3413 * returned by setting |out| to point to it and |outlen| to its length. This
3414 * memory will not be modified, but one should assume that the SSL* keeps a
3415 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3416 * wishes to advertise. Otherwise, no such extension will be included in the
3419 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3420 SSL_CTX_npn_advertised_cb_func cb,
3423 ctx->ext.npn_advertised_cb = cb;
3424 ctx->ext.npn_advertised_cb_arg = arg;
3428 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3429 * client needs to select a protocol from the server's provided list. |out|
3430 * must be set to point to the selected protocol (which may be within |in|).
3431 * The length of the protocol name must be written into |outlen|. The
3432 * server's advertised protocols are provided in |in| and |inlen|. The
3433 * callback can assume that |in| is syntactically valid. The client must
3434 * select a protocol. It is fatal to the connection if this callback returns
3435 * a value other than SSL_TLSEXT_ERR_OK.
3437 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3438 SSL_CTX_npn_select_cb_func cb,
3441 ctx->ext.npn_select_cb = cb;
3442 ctx->ext.npn_select_cb_arg = arg;
3446 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3450 if (protos_len < 2 || protos == NULL)
3453 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3454 if (protos[idx] == 0)
3457 return idx == protos_len;
3460 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3461 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3462 * length-prefixed strings). Returns 0 on success.
3464 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3465 unsigned int protos_len)
3467 unsigned char *alpn;
3469 if (protos_len == 0 || protos == NULL) {
3470 OPENSSL_free(ctx->ext.alpn);
3471 ctx->ext.alpn = NULL;
3472 ctx->ext.alpn_len = 0;
3475 /* Not valid per RFC */
3476 if (!alpn_value_ok(protos, protos_len))
3479 alpn = OPENSSL_memdup(protos, protos_len);
3481 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3484 OPENSSL_free(ctx->ext.alpn);
3485 ctx->ext.alpn = alpn;
3486 ctx->ext.alpn_len = protos_len;
3492 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3493 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3494 * length-prefixed strings). Returns 0 on success.
3496 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3497 unsigned int protos_len)
3499 unsigned char *alpn;
3500 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3505 if (protos_len == 0 || protos == NULL) {
3506 OPENSSL_free(sc->ext.alpn);
3507 sc->ext.alpn = NULL;
3508 sc->ext.alpn_len = 0;
3511 /* Not valid per RFC */
3512 if (!alpn_value_ok(protos, protos_len))
3515 alpn = OPENSSL_memdup(protos, protos_len);
3517 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3520 OPENSSL_free(sc->ext.alpn);
3521 sc->ext.alpn = alpn;
3522 sc->ext.alpn_len = protos_len;
3528 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3529 * called during ClientHello processing in order to select an ALPN protocol
3530 * from the client's list of offered protocols.
3532 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3533 SSL_CTX_alpn_select_cb_func cb,
3536 ctx->ext.alpn_select_cb = cb;
3537 ctx->ext.alpn_select_cb_arg = arg;
3541 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3542 * On return it sets |*data| to point to |*len| bytes of protocol name
3543 * (not including the leading length-prefix byte). If the server didn't
3544 * respond with a negotiated protocol then |*len| will be zero.
3546 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3549 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3552 /* We have no other way to indicate error */
3558 *data = sc->s3.alpn_selected;
3562 *len = (unsigned int)sc->s3.alpn_selected_len;
3565 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3566 const char *label, size_t llen,
3567 const unsigned char *context, size_t contextlen,
3570 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3575 if (sc->session == NULL
3576 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3579 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3581 contextlen, use_context);
3584 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3585 const char *label, size_t llen,
3586 const unsigned char *context,
3589 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3594 if (sc->version != TLS1_3_VERSION)
3597 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3598 context, contextlen);
3601 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3603 const unsigned char *session_id = a->session_id;
3605 unsigned char tmp_storage[4];
3607 if (a->session_id_length < sizeof(tmp_storage)) {
3608 memset(tmp_storage, 0, sizeof(tmp_storage));
3609 memcpy(tmp_storage, a->session_id, a->session_id_length);
3610 session_id = tmp_storage;
3614 ((unsigned long)session_id[0]) |
3615 ((unsigned long)session_id[1] << 8L) |
3616 ((unsigned long)session_id[2] << 16L) |
3617 ((unsigned long)session_id[3] << 24L);
3622 * NB: If this function (or indeed the hash function which uses a sort of
3623 * coarser function than this one) is changed, ensure
3624 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3625 * being able to construct an SSL_SESSION that will collide with any existing
3626 * session with a matching session ID.
3628 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3630 if (a->ssl_version != b->ssl_version)
3632 if (a->session_id_length != b->session_id_length)
3634 return memcmp(a->session_id, b->session_id, a->session_id_length);
3638 * These wrapper functions should remain rather than redeclaring
3639 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3640 * variable. The reason is that the functions aren't static, they're exposed
3644 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3645 const SSL_METHOD *meth)
3647 SSL_CTX *ret = NULL;
3650 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3654 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3657 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3658 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3661 ret = OPENSSL_zalloc(sizeof(*ret));
3665 /* Init the reference counting before any call to SSL_CTX_free */
3666 ret->references = 1;
3667 ret->lock = CRYPTO_THREAD_lock_new();
3668 if (ret->lock == NULL) {
3669 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3674 #ifdef TSAN_REQUIRES_LOCKING
3675 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3676 if (ret->tsan_lock == NULL) {
3677 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3682 ret->libctx = libctx;
3683 if (propq != NULL) {
3684 ret->propq = OPENSSL_strdup(propq);
3685 if (ret->propq == NULL)
3690 ret->min_proto_version = 0;
3691 ret->max_proto_version = 0;
3692 ret->mode = SSL_MODE_AUTO_RETRY;
3693 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3694 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3695 /* We take the system default. */
3696 ret->session_timeout = meth->get_timeout();
3697 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3698 ret->verify_mode = SSL_VERIFY_NONE;
3699 if ((ret->cert = ssl_cert_new()) == NULL)
3702 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3703 if (ret->sessions == NULL)
3705 ret->cert_store = X509_STORE_new();
3706 if (ret->cert_store == NULL)
3708 #ifndef OPENSSL_NO_CT
3709 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3710 if (ret->ctlog_store == NULL)
3714 /* initialize cipher/digest methods table */
3715 if (!ssl_load_ciphers(ret))
3717 /* initialise sig algs */
3718 if (!ssl_setup_sig_algs(ret))
3722 if (!ssl_load_groups(ret))
3725 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3728 if (!ssl_create_cipher_list(ret,
3729 ret->tls13_ciphersuites,
3730 &ret->cipher_list, &ret->cipher_list_by_id,
3731 OSSL_default_cipher_list(), ret->cert)
3732 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3733 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3737 ret->param = X509_VERIFY_PARAM_new();
3738 if (ret->param == NULL)
3742 * If these aren't available from the provider we'll get NULL returns.
3743 * That's fine but will cause errors later if SSLv3 is negotiated
3745 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3746 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3748 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3751 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3754 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3757 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3760 /* No compression for DTLS */
3761 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3762 ret->comp_methods = SSL_COMP_get_compression_methods();
3764 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3765 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3767 /* Setup RFC5077 ticket keys */
3768 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3769 sizeof(ret->ext.tick_key_name), 0) <= 0)
3770 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3771 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3772 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3773 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3774 ret->options |= SSL_OP_NO_TICKET;
3776 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3777 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3780 #ifndef OPENSSL_NO_SRP
3781 if (!ssl_ctx_srp_ctx_init_intern(ret))
3784 #ifndef OPENSSL_NO_ENGINE
3785 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3786 # define eng_strx(x) #x
3787 # define eng_str(x) eng_strx(x)
3788 /* Use specific client engine automatically... ignore errors */
3791 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3794 ENGINE_load_builtin_engines();
3795 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3797 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3803 * Disable compression by default to prevent CRIME. Applications can
3804 * re-enable compression by configuring
3805 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3806 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3807 * middlebox compatibility by default. This may be disabled by default in
3808 * a later OpenSSL version.
3810 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3812 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3815 * We cannot usefully set a default max_early_data here (which gets
3816 * propagated in SSL_new(), for the following reason: setting the
3817 * SSL field causes tls_construct_stoc_early_data() to tell the
3818 * client that early data will be accepted when constructing a TLS 1.3
3819 * session ticket, and the client will accordingly send us early data
3820 * when using that ticket (if the client has early data to send).
3821 * However, in order for the early data to actually be consumed by
3822 * the application, the application must also have calls to
3823 * SSL_read_early_data(); otherwise we'll just skip past the early data
3824 * and ignore it. So, since the application must add calls to
3825 * SSL_read_early_data(), we also require them to add
3826 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3827 * eliminating the bandwidth-wasting early data in the case described
3830 ret->max_early_data = 0;
3833 * Default recv_max_early_data is a fully loaded single record. Could be
3834 * split across multiple records in practice. We set this differently to
3835 * max_early_data so that, in the default case, we do not advertise any
3836 * support for early_data, but if a client were to send us some (e.g.
3837 * because of an old, stale ticket) then we will tolerate it and skip over
3840 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3842 /* By default we send two session tickets automatically in TLSv1.3 */
3843 ret->num_tickets = 2;
3845 ssl_ctx_system_config(ret);
3849 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3855 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3857 return SSL_CTX_new_ex(NULL, NULL, meth);
3860 int SSL_CTX_up_ref(SSL_CTX *ctx)
3864 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3867 REF_PRINT_COUNT("SSL_CTX", ctx);
3868 REF_ASSERT_ISNT(i < 2);
3869 return ((i > 1) ? 1 : 0);
3872 void SSL_CTX_free(SSL_CTX *a)
3880 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3881 REF_PRINT_COUNT("SSL_CTX", a);
3884 REF_ASSERT_ISNT(i < 0);
3886 X509_VERIFY_PARAM_free(a->param);
3887 dane_ctx_final(&a->dane);
3890 * Free internal session cache. However: the remove_cb() may reference
3891 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3892 * after the sessions were flushed.
3893 * As the ex_data handling routines might also touch the session cache,
3894 * the most secure solution seems to be: empty (flush) the cache, then
3895 * free ex_data, then finally free the cache.
3896 * (See ticket [openssl.org #212].)
3898 if (a->sessions != NULL)
3899 SSL_CTX_flush_sessions(a, 0);
3901 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3902 lh_SSL_SESSION_free(a->sessions);
3903 X509_STORE_free(a->cert_store);
3904 #ifndef OPENSSL_NO_CT
3905 CTLOG_STORE_free(a->ctlog_store);
3907 sk_SSL_CIPHER_free(a->cipher_list);
3908 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3909 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3910 ssl_cert_free(a->cert);
3911 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3912 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3913 OSSL_STACK_OF_X509_free(a->extra_certs);
3914 a->comp_methods = NULL;
3915 #ifndef OPENSSL_NO_SRTP
3916 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3918 #ifndef OPENSSL_NO_SRP
3919 ssl_ctx_srp_ctx_free_intern(a);
3921 #ifndef OPENSSL_NO_ENGINE
3922 tls_engine_finish(a->client_cert_engine);
3925 OPENSSL_free(a->ext.ecpointformats);
3926 OPENSSL_free(a->ext.supportedgroups);
3927 OPENSSL_free(a->ext.supported_groups_default);
3928 OPENSSL_free(a->ext.alpn);
3929 OPENSSL_secure_free(a->ext.secure);
3931 ssl_evp_md_free(a->md5);
3932 ssl_evp_md_free(a->sha1);
3934 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3935 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3936 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3937 ssl_evp_md_free(a->ssl_digest_methods[j]);
3938 for (j = 0; j < a->group_list_len; j++) {
3939 OPENSSL_free(a->group_list[j].tlsname);
3940 OPENSSL_free(a->group_list[j].realname);
3941 OPENSSL_free(a->group_list[j].algorithm);
3943 OPENSSL_free(a->group_list);
3945 OPENSSL_free(a->sigalg_lookup_cache);
3947 CRYPTO_THREAD_lock_free(a->lock);
3948 #ifdef TSAN_REQUIRES_LOCKING
3949 CRYPTO_THREAD_lock_free(a->tsan_lock);
3952 OPENSSL_free(a->propq);
3957 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3959 ctx->default_passwd_callback = cb;
3962 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3964 ctx->default_passwd_callback_userdata = u;
3967 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3969 return ctx->default_passwd_callback;
3972 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3974 return ctx->default_passwd_callback_userdata;
3977 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3979 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3984 sc->default_passwd_callback = cb;
3987 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3989 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3994 sc->default_passwd_callback_userdata = u;
3997 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3999 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4004 return sc->default_passwd_callback;
4007 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4009 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4014 return sc->default_passwd_callback_userdata;
4017 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4018 int (*cb) (X509_STORE_CTX *, void *),
4021 ctx->app_verify_callback = cb;
4022 ctx->app_verify_arg = arg;
4025 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4026 int (*cb) (int, X509_STORE_CTX *))
4028 ctx->verify_mode = mode;
4029 ctx->default_verify_callback = cb;
4032 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4034 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4037 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4039 ssl_cert_set_cert_cb(c->cert, cb, arg);
4042 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4044 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4049 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4052 void ssl_set_masks(SSL_CONNECTION *s)
4055 uint32_t *pvalid = s->s3.tmp.valid_flags;
4056 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4057 unsigned long mask_k, mask_a;
4058 int have_ecc_cert, ecdsa_ok;
4063 dh_tmp = (c->dh_tmp != NULL
4064 || c->dh_tmp_cb != NULL
4067 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4068 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4069 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4070 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4074 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4075 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4077 #ifndef OPENSSL_NO_GOST
4078 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4079 mask_k |= SSL_kGOST | SSL_kGOST18;
4080 mask_a |= SSL_aGOST12;
4082 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4083 mask_k |= SSL_kGOST | SSL_kGOST18;
4084 mask_a |= SSL_aGOST12;
4086 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4087 mask_k |= SSL_kGOST;
4088 mask_a |= SSL_aGOST01;
4099 * If we only have an RSA-PSS certificate allow RSA authentication
4100 * if TLS 1.2 and peer supports it.
4103 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4104 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4105 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4112 mask_a |= SSL_aNULL;
4115 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4116 * depending on the key usage extension.
4118 if (have_ecc_cert) {
4120 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4121 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4122 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4125 mask_a |= SSL_aECDSA;
4127 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4128 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4129 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4130 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4131 mask_a |= SSL_aECDSA;
4133 /* Allow Ed448 for TLS 1.2 if peer supports it */
4134 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4135 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4136 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4137 mask_a |= SSL_aECDSA;
4139 mask_k |= SSL_kECDHE;
4141 #ifndef OPENSSL_NO_PSK
4144 if (mask_k & SSL_kRSA)
4145 mask_k |= SSL_kRSAPSK;
4146 if (mask_k & SSL_kDHE)
4147 mask_k |= SSL_kDHEPSK;
4148 if (mask_k & SSL_kECDHE)
4149 mask_k |= SSL_kECDHEPSK;
4152 s->s3.tmp.mask_k = mask_k;
4153 s->s3.tmp.mask_a = mask_a;
4156 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4158 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4159 /* key usage, if present, must allow signing */
4160 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4161 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4165 return 1; /* all checks are ok */
4168 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4169 const unsigned char **serverinfo,
4170 size_t *serverinfo_length)
4172 CERT_PKEY *cpk = s->s3.tmp.cert;
4173 *serverinfo_length = 0;
4175 if (cpk == NULL || cpk->serverinfo == NULL)
4178 *serverinfo = cpk->serverinfo;
4179 *serverinfo_length = cpk->serverinfo_length;
4183 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4188 * If the session_id_length is 0, we are not supposed to cache it, and it
4189 * would be rather hard to do anyway :-)
4191 if (s->session->session_id_length == 0)
4195 * If sid_ctx_length is 0 there is no specific application context
4196 * associated with this session, so when we try to resume it and
4197 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4198 * indication that this is actually a session for the proper application
4199 * context, and the *handshake* will fail, not just the resumption attempt.
4200 * Do not cache (on the server) these sessions that are not resumable
4201 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4203 if (s->server && s->session->sid_ctx_length == 0
4204 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4207 i = s->session_ctx->session_cache_mode;
4209 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4211 * Add the session to the internal cache. In server side TLSv1.3 we
4212 * normally don't do this because by default it's a full stateless ticket
4213 * with only a dummy session id so there is no reason to cache it,
4215 * - we are doing early_data, in which case we cache so that we can
4217 * - the application has set a remove_session_cb so needs to know about
4218 * session timeout events
4219 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4221 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4222 && (!SSL_CONNECTION_IS_TLS13(s)
4224 || (s->max_early_data > 0
4225 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4226 || s->session_ctx->remove_session_cb != NULL
4227 || (s->options & SSL_OP_NO_TICKET) != 0))
4228 SSL_CTX_add_session(s->session_ctx, s->session);
4231 * Add the session to the external cache. We do this even in server side
4232 * TLSv1.3 without early data because some applications just want to
4233 * know about the creation of a session and aren't doing a full cache.
4235 if (s->session_ctx->new_session_cb != NULL) {
4236 SSL_SESSION_up_ref(s->session);
4237 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4239 SSL_SESSION_free(s->session);
4243 /* auto flush every 255 connections */
4244 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4245 TSAN_QUALIFIER int *stat;
4247 if (mode & SSL_SESS_CACHE_CLIENT)
4248 stat = &s->session_ctx->stats.sess_connect_good;
4250 stat = &s->session_ctx->stats.sess_accept_good;
4251 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4252 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4256 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4261 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4266 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4269 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4271 /* TODO(QUIC): Do we want this for QUIC? */
4273 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4276 if (s->method != meth) {
4277 const SSL_METHOD *sm = s->method;
4278 int (*hf) (SSL *) = sc->handshake_func;
4280 if (sm->version == meth->version)
4285 ret = s->method->ssl_init(s);
4288 if (hf == sm->ssl_connect)
4289 sc->handshake_func = meth->ssl_connect;
4290 else if (hf == sm->ssl_accept)
4291 sc->handshake_func = meth->ssl_accept;
4296 int SSL_get_error(const SSL *s, int i)
4301 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4304 return SSL_ERROR_NONE;
4306 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4308 return SSL_ERROR_SSL;
4311 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4312 * where we do encode the error
4314 if ((l = ERR_peek_error()) != 0) {
4315 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4316 return SSL_ERROR_SYSCALL;
4318 return SSL_ERROR_SSL;
4321 if (SSL_want_read(s)) {
4322 bio = SSL_get_rbio(s);
4323 if (BIO_should_read(bio))
4324 return SSL_ERROR_WANT_READ;
4325 else if (BIO_should_write(bio))
4327 * This one doesn't make too much sense ... We never try to write
4328 * to the rbio, and an application program where rbio and wbio
4329 * are separate couldn't even know what it should wait for.
4330 * However if we ever set s->rwstate incorrectly (so that we have
4331 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4332 * wbio *are* the same, this test works around that bug; so it
4333 * might be safer to keep it.
4335 return SSL_ERROR_WANT_WRITE;
4336 else if (BIO_should_io_special(bio)) {
4337 reason = BIO_get_retry_reason(bio);
4338 if (reason == BIO_RR_CONNECT)
4339 return SSL_ERROR_WANT_CONNECT;
4340 else if (reason == BIO_RR_ACCEPT)
4341 return SSL_ERROR_WANT_ACCEPT;
4343 return SSL_ERROR_SYSCALL; /* unknown */
4347 if (SSL_want_write(s)) {
4348 /* Access wbio directly - in order to use the buffered bio if present */
4350 if (BIO_should_write(bio))
4351 return SSL_ERROR_WANT_WRITE;
4352 else if (BIO_should_read(bio))
4354 * See above (SSL_want_read(s) with BIO_should_write(bio))
4356 return SSL_ERROR_WANT_READ;
4357 else if (BIO_should_io_special(bio)) {
4358 reason = BIO_get_retry_reason(bio);
4359 if (reason == BIO_RR_CONNECT)
4360 return SSL_ERROR_WANT_CONNECT;
4361 else if (reason == BIO_RR_ACCEPT)
4362 return SSL_ERROR_WANT_ACCEPT;
4364 return SSL_ERROR_SYSCALL;
4367 if (SSL_want_x509_lookup(s))
4368 return SSL_ERROR_WANT_X509_LOOKUP;
4369 if (SSL_want_retry_verify(s))
4370 return SSL_ERROR_WANT_RETRY_VERIFY;
4371 if (SSL_want_async(s))
4372 return SSL_ERROR_WANT_ASYNC;
4373 if (SSL_want_async_job(s))
4374 return SSL_ERROR_WANT_ASYNC_JOB;
4375 if (SSL_want_client_hello_cb(s))
4376 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4378 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4379 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4380 return SSL_ERROR_ZERO_RETURN;
4382 return SSL_ERROR_SYSCALL;
4385 static int ssl_do_handshake_intern(void *vargs)
4387 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4389 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4394 return sc->handshake_func(s);
4397 int SSL_do_handshake(SSL *s)
4400 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4402 /* TODO(QUIC): Special handling for QUIC will be needed */
4406 if (sc->handshake_func == NULL) {
4407 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4411 ossl_statem_check_finish_init(sc, -1);
4413 s->method->ssl_renegotiate_check(s, 0);
4415 if (SSL_in_init(s) || SSL_in_before(s)) {
4416 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4417 struct ssl_async_args args;
4419 memset(&args, 0, sizeof(args));
4422 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4424 ret = sc->handshake_func(s);
4430 void SSL_set_accept_state(SSL *s)
4432 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4434 /* TODO(QUIC): Special handling for QUIC will be needed */
4440 ossl_statem_clear(sc);
4441 sc->handshake_func = s->method->ssl_accept;
4445 void SSL_set_connect_state(SSL *s)
4447 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4449 /* TODO(QUIC): Special handling for QUIC will be needed */
4455 ossl_statem_clear(sc);
4456 sc->handshake_func = s->method->ssl_connect;
4460 int ssl_undefined_function(SSL *s)
4462 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4466 int ssl_undefined_void_function(void)
4468 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4472 int ssl_undefined_const_function(const SSL *s)
4477 const SSL_METHOD *ssl_bad_method(int ver)
4479 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4483 const char *ssl_protocol_to_string(int version)
4487 case TLS1_3_VERSION:
4490 case TLS1_2_VERSION:
4493 case TLS1_1_VERSION:
4508 case DTLS1_2_VERSION:
4516 const char *SSL_get_version(const SSL *s)
4518 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4520 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4524 return ssl_protocol_to_string(sc->version);
4527 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4529 STACK_OF(X509_NAME) *sk;
4538 if ((sk = sk_X509_NAME_new_null()) == NULL)
4540 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4541 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4543 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4546 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4548 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4557 SSL *SSL_dup(SSL *s)
4561 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4562 SSL_CONNECTION *retsc;
4563 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4568 /* If we're not quiescent, just up_ref! */
4569 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4570 CRYPTO_UP_REF(&s->references, &i, s->lock);
4575 * Otherwise, copy configuration state, and session if set.
4577 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4579 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4582 if (sc->session != NULL) {
4584 * Arranges to share the same session via up_ref. This "copies"
4585 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4587 if (!SSL_copy_session_id(ret, s))
4591 * No session has been established yet, so we have to expect that
4592 * s->cert or ret->cert will be changed later -- they should not both
4593 * point to the same object, and thus we can't use
4594 * SSL_copy_session_id.
4596 if (!SSL_set_ssl_method(ret, s->method))
4599 if (sc->cert != NULL) {
4600 ssl_cert_free(retsc->cert);
4601 retsc->cert = ssl_cert_dup(sc->cert);
4602 if (retsc->cert == NULL)
4606 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4607 (int)sc->sid_ctx_length))
4611 if (!ssl_dane_dup(retsc, sc))
4613 retsc->version = sc->version;
4614 retsc->options = sc->options;
4615 retsc->min_proto_version = sc->min_proto_version;
4616 retsc->max_proto_version = sc->max_proto_version;
4617 retsc->mode = sc->mode;
4618 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4619 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4620 retsc->msg_callback = sc->msg_callback;
4621 retsc->msg_callback_arg = sc->msg_callback_arg;
4622 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4623 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4624 retsc->generate_session_id = sc->generate_session_id;
4626 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4628 /* copy app data, a little dangerous perhaps */
4629 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4632 retsc->server = sc->server;
4633 if (sc->handshake_func) {
4635 SSL_set_accept_state(ret);
4637 SSL_set_connect_state(ret);
4639 retsc->shutdown = sc->shutdown;
4640 retsc->hit = sc->hit;
4642 retsc->default_passwd_callback = sc->default_passwd_callback;
4643 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4645 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4647 /* dup the cipher_list and cipher_list_by_id stacks */
4648 if (sc->cipher_list != NULL) {
4649 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4652 if (sc->cipher_list_by_id != NULL)
4653 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4657 /* Dup the client_CA list */
4658 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4659 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4669 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4671 if (s->enc_read_ctx != NULL) {
4672 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4673 s->enc_read_ctx = NULL;
4675 if (s->enc_write_ctx != NULL) {
4676 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4677 s->enc_write_ctx = NULL;
4679 #ifndef OPENSSL_NO_COMP
4680 COMP_CTX_free(s->expand);
4682 COMP_CTX_free(s->compress);
4687 X509 *SSL_get_certificate(const SSL *s)
4689 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4694 if (sc->cert != NULL)
4695 return sc->cert->key->x509;
4700 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4702 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4707 if (sc->cert != NULL)
4708 return sc->cert->key->privatekey;
4713 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4715 if (ctx->cert != NULL)
4716 return ctx->cert->key->x509;
4721 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4723 if (ctx->cert != NULL)
4724 return ctx->cert->key->privatekey;
4729 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4731 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4736 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4737 return sc->session->cipher;
4741 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4743 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4748 return sc->s3.tmp.new_cipher;
4751 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4753 #ifndef OPENSSL_NO_COMP
4754 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4759 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4765 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4767 #ifndef OPENSSL_NO_COMP
4768 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4773 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4779 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4783 if (s->bbio != NULL) {
4784 /* Already buffered. */
4788 bbio = BIO_new(BIO_f_buffer());
4789 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4791 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4795 s->wbio = BIO_push(bbio, s->wbio);
4800 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4802 /* callers ensure s is never null */
4803 if (s->bbio == NULL)
4806 s->wbio = BIO_pop(s->wbio);
4813 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4815 ctx->quiet_shutdown = mode;
4818 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4820 return ctx->quiet_shutdown;
4823 void SSL_set_quiet_shutdown(SSL *s, int mode)
4825 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4827 /* TODO(QUIC): Do we want this for QUIC? */
4831 sc->quiet_shutdown = mode;
4834 int SSL_get_quiet_shutdown(const SSL *s)
4836 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4838 /* TODO(QUIC): Do we want this for QUIC? */
4842 return sc->quiet_shutdown;
4845 void SSL_set_shutdown(SSL *s, int mode)
4847 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4849 /* TODO(QUIC): Do we want this for QUIC? */
4853 sc->shutdown = mode;
4856 int SSL_get_shutdown(const SSL *s)
4858 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4860 /* TODO(QUIC): Do we want this for QUIC? */
4864 return sc->shutdown;
4867 int SSL_version(const SSL *s)
4869 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4871 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4878 int SSL_client_version(const SSL *s)
4880 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4882 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4886 return sc->client_version;
4889 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4894 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4897 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4899 /* TODO(QUIC): Do we need this for QUIC support? */
4903 if (ssl->ctx == ctx)
4906 ctx = sc->session_ctx;
4907 new_cert = ssl_cert_dup(ctx->cert);
4908 if (new_cert == NULL) {
4912 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4913 ssl_cert_free(new_cert);
4917 ssl_cert_free(sc->cert);
4918 sc->cert = new_cert;
4921 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4922 * so setter APIs must prevent invalid lengths from entering the system.
4924 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4928 * If the session ID context matches that of the parent SSL_CTX,
4929 * inherit it from the new SSL_CTX as well. If however the context does
4930 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4931 * leave it unchanged.
4933 if ((ssl->ctx != NULL) &&
4934 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4935 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4936 sc->sid_ctx_length = ctx->sid_ctx_length;
4937 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4940 SSL_CTX_up_ref(ctx);
4941 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4947 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4949 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4953 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4955 X509_LOOKUP *lookup;
4957 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4961 /* We ignore errors, in case the directory doesn't exist */
4964 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4971 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4973 X509_LOOKUP *lookup;
4975 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4979 /* We ignore errors, in case the file doesn't exist */
4982 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4990 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4992 X509_LOOKUP *lookup;
4994 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4998 /* We ignore errors, in case the directory doesn't exist */
5001 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
5008 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5010 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5014 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5016 return X509_STORE_load_path(ctx->cert_store, CApath);
5019 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5021 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5025 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5028 if (CAfile == NULL && CApath == NULL)
5030 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5032 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5037 void SSL_set_info_callback(SSL *ssl,
5038 void (*cb) (const SSL *ssl, int type, int val))
5040 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5045 sc->info_callback = cb;
5049 * One compiler (Diab DCC) doesn't like argument names in returned function
5052 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5055 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5060 return sc->info_callback;
5063 void SSL_set_verify_result(SSL *ssl, long arg)
5065 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5070 sc->verify_result = arg;
5073 long SSL_get_verify_result(const SSL *ssl)
5075 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5080 return sc->verify_result;
5083 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5085 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5091 return sizeof(sc->s3.client_random);
5092 if (outlen > sizeof(sc->s3.client_random))
5093 outlen = sizeof(sc->s3.client_random);
5094 memcpy(out, sc->s3.client_random, outlen);
5098 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5100 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5106 return sizeof(sc->s3.server_random);
5107 if (outlen > sizeof(sc->s3.server_random))
5108 outlen = sizeof(sc->s3.server_random);
5109 memcpy(out, sc->s3.server_random, outlen);
5113 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5114 unsigned char *out, size_t outlen)
5117 return session->master_key_length;
5118 if (outlen > session->master_key_length)
5119 outlen = session->master_key_length;
5120 memcpy(out, session->master_key, outlen);
5124 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5127 if (len > sizeof(sess->master_key))
5130 memcpy(sess->master_key, in, len);
5131 sess->master_key_length = len;
5136 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5138 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5141 void *SSL_get_ex_data(const SSL *s, int idx)
5143 return CRYPTO_get_ex_data(&s->ex_data, idx);
5146 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5148 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5151 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5153 return CRYPTO_get_ex_data(&s->ex_data, idx);
5156 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5158 return ctx->cert_store;
5161 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5163 X509_STORE_free(ctx->cert_store);
5164 ctx->cert_store = store;
5167 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5170 X509_STORE_up_ref(store);
5171 SSL_CTX_set_cert_store(ctx, store);
5174 int SSL_want(const SSL *s)
5176 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5184 #ifndef OPENSSL_NO_PSK
5185 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5187 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5188 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5191 OPENSSL_free(ctx->cert->psk_identity_hint);
5192 if (identity_hint != NULL) {
5193 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5194 if (ctx->cert->psk_identity_hint == NULL)
5197 ctx->cert->psk_identity_hint = NULL;
5201 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5203 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5208 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5209 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5212 OPENSSL_free(sc->cert->psk_identity_hint);
5213 if (identity_hint != NULL) {
5214 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5215 if (sc->cert->psk_identity_hint == NULL)
5218 sc->cert->psk_identity_hint = NULL;
5222 const char *SSL_get_psk_identity_hint(const SSL *s)
5224 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5226 if (sc == NULL || sc->session == NULL)
5229 return sc->session->psk_identity_hint;
5232 const char *SSL_get_psk_identity(const SSL *s)
5234 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5236 if (sc == NULL || sc->session == NULL)
5239 return sc->session->psk_identity;
5242 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5244 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5249 sc->psk_client_callback = cb;
5252 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5254 ctx->psk_client_callback = cb;
5257 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5259 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5264 sc->psk_server_callback = cb;
5267 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5269 ctx->psk_server_callback = cb;
5273 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5275 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5280 sc->psk_find_session_cb = cb;
5283 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5284 SSL_psk_find_session_cb_func cb)
5286 ctx->psk_find_session_cb = cb;
5289 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5291 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5296 sc->psk_use_session_cb = cb;
5299 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5300 SSL_psk_use_session_cb_func cb)
5302 ctx->psk_use_session_cb = cb;
5305 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5306 void (*cb) (int write_p, int version,
5307 int content_type, const void *buf,
5308 size_t len, SSL *ssl, void *arg))
5310 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5313 void SSL_set_msg_callback(SSL *ssl,
5314 void (*cb) (int write_p, int version,
5315 int content_type, const void *buf,
5316 size_t len, SSL *ssl, void *arg))
5318 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5321 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5322 int (*cb) (SSL *ssl,
5326 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5327 (void (*)(void))cb);
5330 void SSL_set_not_resumable_session_callback(SSL *ssl,
5331 int (*cb) (SSL *ssl,
5332 int is_forward_secure))
5334 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5335 (void (*)(void))cb);
5338 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5339 size_t (*cb) (SSL *ssl, int type,
5340 size_t len, void *arg))
5342 ctx->record_padding_cb = cb;
5345 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5347 ctx->record_padding_arg = arg;
5350 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5352 return ctx->record_padding_arg;
5355 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5357 /* block size of 0 or 1 is basically no padding */
5358 if (block_size == 1)
5359 ctx->block_padding = 0;
5360 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5361 ctx->block_padding = block_size;
5367 int SSL_set_record_padding_callback(SSL *ssl,
5368 size_t (*cb) (SSL *ssl, int type,
5369 size_t len, void *arg))
5372 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5377 b = SSL_get_wbio(ssl);
5378 if (b == NULL || !BIO_get_ktls_send(b)) {
5379 sc->record_padding_cb = cb;
5385 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5387 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5392 sc->record_padding_arg = arg;
5395 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5397 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5402 return sc->record_padding_arg;
5405 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5407 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5412 /* block size of 0 or 1 is basically no padding */
5413 if (block_size == 1)
5414 sc->block_padding = 0;
5415 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5416 sc->block_padding = block_size;
5422 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5424 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5429 sc->num_tickets = num_tickets;
5434 size_t SSL_get_num_tickets(const SSL *s)
5436 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5441 return sc->num_tickets;
5444 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5446 ctx->num_tickets = num_tickets;
5451 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5453 return ctx->num_tickets;
5457 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5458 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5459 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5460 * Returns the newly allocated ctx;
5463 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5465 ssl_clear_hash_ctx(hash);
5466 *hash = EVP_MD_CTX_new();
5467 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5468 EVP_MD_CTX_free(*hash);
5475 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5478 EVP_MD_CTX_free(*hash);
5482 /* Retrieve handshake hashes */
5483 int ssl_handshake_hash(SSL_CONNECTION *s,
5484 unsigned char *out, size_t outlen,
5487 EVP_MD_CTX *ctx = NULL;
5488 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5489 int hashleni = EVP_MD_CTX_get_size(hdgst);
5492 if (hashleni < 0 || (size_t)hashleni > outlen) {
5493 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5497 ctx = EVP_MD_CTX_new();
5499 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5503 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5504 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5505 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5509 *hashlen = hashleni;
5513 EVP_MD_CTX_free(ctx);
5517 int SSL_session_reused(const SSL *s)
5519 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5527 int SSL_is_server(const SSL *s)
5529 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5537 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5538 void SSL_set_debug(SSL *s, int debug)
5540 /* Old function was do-nothing anyway... */
5546 void SSL_set_security_level(SSL *s, int level)
5548 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5553 sc->cert->sec_level = level;
5556 int SSL_get_security_level(const SSL *s)
5558 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5563 return sc->cert->sec_level;
5566 void SSL_set_security_callback(SSL *s,
5567 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5568 int op, int bits, int nid,
5569 void *other, void *ex))
5571 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5576 sc->cert->sec_cb = cb;
5579 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5580 const SSL_CTX *ctx, int op,
5581 int bits, int nid, void *other,
5583 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5588 return sc->cert->sec_cb;
5591 void SSL_set0_security_ex_data(SSL *s, void *ex)
5593 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5598 sc->cert->sec_ex = ex;
5601 void *SSL_get0_security_ex_data(const SSL *s)
5603 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5608 return sc->cert->sec_ex;
5611 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5613 ctx->cert->sec_level = level;
5616 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5618 return ctx->cert->sec_level;
5621 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5622 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5623 int op, int bits, int nid,
5624 void *other, void *ex))
5626 ctx->cert->sec_cb = cb;
5629 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5635 return ctx->cert->sec_cb;
5638 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5640 ctx->cert->sec_ex = ex;
5643 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5645 return ctx->cert->sec_ex;
5648 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5650 return ctx->options;
5653 uint64_t SSL_get_options(const SSL *s)
5655 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5663 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5665 return ctx->options |= op;
5668 uint64_t SSL_set_options(SSL *s, uint64_t op)
5670 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5675 return sc->options |= op;
5678 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5680 return ctx->options &= ~op;
5683 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5685 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5690 return sc->options &= ~op;
5693 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5695 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5700 return sc->verified_chain;
5703 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5705 #ifndef OPENSSL_NO_CT
5708 * Moves SCTs from the |src| stack to the |dst| stack.
5709 * The source of each SCT will be set to |origin|.
5710 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5712 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5714 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5715 sct_source_t origin)
5721 *dst = sk_SCT_new_null();
5723 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5728 while ((sct = sk_SCT_pop(src)) != NULL) {
5729 if (SCT_set_source(sct, origin) != 1)
5732 if (sk_SCT_push(*dst, sct) <= 0)
5740 sk_SCT_push(src, sct); /* Put the SCT back */
5745 * Look for data collected during ServerHello and parse if found.
5746 * Returns the number of SCTs extracted.
5748 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5750 int scts_extracted = 0;
5752 if (s->ext.scts != NULL) {
5753 const unsigned char *p = s->ext.scts;
5754 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5756 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5758 SCT_LIST_free(scts);
5761 return scts_extracted;
5765 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5766 * contains an SCT X509 extension. They will be stored in |s->scts|.
5768 * - The number of SCTs extracted, assuming an OCSP response exists.
5769 * - 0 if no OCSP response exists or it contains no SCTs.
5770 * - A negative integer if an error occurs.
5772 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5774 # ifndef OPENSSL_NO_OCSP
5775 int scts_extracted = 0;
5776 const unsigned char *p;
5777 OCSP_BASICRESP *br = NULL;
5778 OCSP_RESPONSE *rsp = NULL;
5779 STACK_OF(SCT) *scts = NULL;
5782 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5785 p = s->ext.ocsp.resp;
5786 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5790 br = OCSP_response_get1_basic(rsp);
5794 for (i = 0; i < OCSP_resp_count(br); ++i) {
5795 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5801 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5803 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5804 if (scts_extracted < 0)
5808 SCT_LIST_free(scts);
5809 OCSP_BASICRESP_free(br);
5810 OCSP_RESPONSE_free(rsp);
5811 return scts_extracted;
5813 /* Behave as if no OCSP response exists */
5819 * Attempts to extract SCTs from the peer certificate.
5820 * Return the number of SCTs extracted, or a negative integer if an error
5823 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5825 int scts_extracted = 0;
5826 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5829 STACK_OF(SCT) *scts =
5830 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5833 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5835 SCT_LIST_free(scts);
5838 return scts_extracted;
5842 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5843 * response (if it exists) and X509v3 extensions in the certificate.
5844 * Returns NULL if an error occurs.
5846 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5848 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5853 if (!sc->scts_parsed) {
5854 if (ct_extract_tls_extension_scts(sc) < 0 ||
5855 ct_extract_ocsp_response_scts(sc) < 0 ||
5856 ct_extract_x509v3_extension_scts(sc) < 0)
5859 sc->scts_parsed = 1;
5866 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5867 const STACK_OF(SCT) *scts, void *unused_arg)
5872 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5873 const STACK_OF(SCT) *scts, void *unused_arg)
5875 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5878 for (i = 0; i < count; ++i) {
5879 SCT *sct = sk_SCT_value(scts, i);
5880 int status = SCT_get_validation_status(sct);
5882 if (status == SCT_VALIDATION_STATUS_VALID)
5885 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5889 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5892 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5898 * Since code exists that uses the custom extension handler for CT, look
5899 * for this and throw an error if they have already registered to use CT.
5901 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5902 TLSEXT_TYPE_signed_certificate_timestamp))
5904 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5908 if (callback != NULL) {
5910 * If we are validating CT, then we MUST accept SCTs served via OCSP
5912 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5916 sc->ct_validation_callback = callback;
5917 sc->ct_validation_callback_arg = arg;
5922 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5923 ssl_ct_validation_cb callback, void *arg)
5926 * Since code exists that uses the custom extension handler for CT, look for
5927 * this and throw an error if they have already registered to use CT.
5929 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5930 TLSEXT_TYPE_signed_certificate_timestamp))
5932 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5936 ctx->ct_validation_callback = callback;
5937 ctx->ct_validation_callback_arg = arg;
5941 int SSL_ct_is_enabled(const SSL *s)
5943 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5948 return sc->ct_validation_callback != NULL;
5951 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5953 return ctx->ct_validation_callback != NULL;
5956 int ssl_validate_ct(SSL_CONNECTION *s)
5959 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5961 SSL_DANE *dane = &s->dane;
5962 CT_POLICY_EVAL_CTX *ctx = NULL;
5963 const STACK_OF(SCT) *scts;
5966 * If no callback is set, the peer is anonymous, or its chain is invalid,
5967 * skip SCT validation - just return success. Applications that continue
5968 * handshakes without certificates, with unverified chains, or pinned leaf
5969 * certificates are outside the scope of the WebPKI and CT.
5971 * The above exclusions notwithstanding the vast majority of peers will
5972 * have rather ordinary certificate chains validated by typical
5973 * applications that perform certificate verification and therefore will
5974 * process SCTs when enabled.
5976 if (s->ct_validation_callback == NULL || cert == NULL ||
5977 s->verify_result != X509_V_OK ||
5978 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5982 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5983 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5985 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5986 switch (dane->mtlsa->usage) {
5987 case DANETLS_USAGE_DANE_TA:
5988 case DANETLS_USAGE_DANE_EE:
5993 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5994 SSL_CONNECTION_GET_CTX(s)->propq);
5996 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6000 issuer = sk_X509_value(s->verified_chain, 1);
6001 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
6002 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
6003 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
6004 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
6005 CT_POLICY_EVAL_CTX_set_time(
6006 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
6008 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6011 * This function returns success (> 0) only when all the SCTs are valid, 0
6012 * when some are invalid, and < 0 on various internal errors (out of
6013 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6014 * reason to abort the handshake, that decision is up to the callback.
6015 * Therefore, we error out only in the unexpected case that the return
6016 * value is negative.
6018 * XXX: One might well argue that the return value of this function is an
6019 * unfortunate design choice. Its job is only to determine the validation
6020 * status of each of the provided SCTs. So long as it correctly separates
6021 * the wheat from the chaff it should return success. Failure in this case
6022 * ought to correspond to an inability to carry out its duties.
6024 if (SCT_LIST_validate(scts, ctx) < 0) {
6025 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6029 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6031 ret = 0; /* This function returns 0 on failure */
6033 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6036 CT_POLICY_EVAL_CTX_free(ctx);
6038 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6039 * failure return code here. Also the application may wish the complete
6040 * the handshake, and then disconnect cleanly at a higher layer, after
6041 * checking the verification status of the completed connection.
6043 * We therefore force a certificate verification failure which will be
6044 * visible via SSL_get_verify_result() and cached as part of any resumed
6047 * Note: the permissive callback is for information gathering only, always
6048 * returns success, and does not affect verification status. Only the
6049 * strict callback or a custom application-specified callback can trigger
6050 * connection failure or record a verification error.
6053 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6057 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6059 switch (validation_mode) {
6061 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6063 case SSL_CT_VALIDATION_PERMISSIVE:
6064 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6065 case SSL_CT_VALIDATION_STRICT:
6066 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6070 int SSL_enable_ct(SSL *s, int validation_mode)
6072 switch (validation_mode) {
6074 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6076 case SSL_CT_VALIDATION_PERMISSIVE:
6077 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6078 case SSL_CT_VALIDATION_STRICT:
6079 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6083 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6085 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6088 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6090 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6093 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6095 CTLOG_STORE_free(ctx->ctlog_store);
6096 ctx->ctlog_store = logs;
6099 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6101 return ctx->ctlog_store;
6104 #endif /* OPENSSL_NO_CT */
6106 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6109 c->client_hello_cb = cb;
6110 c->client_hello_cb_arg = arg;
6113 int SSL_client_hello_isv2(SSL *s)
6115 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6120 if (sc->clienthello == NULL)
6122 return sc->clienthello->isv2;
6125 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6127 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6132 if (sc->clienthello == NULL)
6134 return sc->clienthello->legacy_version;
6137 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6139 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6144 if (sc->clienthello == NULL)
6147 *out = sc->clienthello->random;
6148 return SSL3_RANDOM_SIZE;
6151 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6153 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6158 if (sc->clienthello == NULL)
6161 *out = sc->clienthello->session_id;
6162 return sc->clienthello->session_id_len;
6165 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6167 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6172 if (sc->clienthello == NULL)
6175 *out = PACKET_data(&sc->clienthello->ciphersuites);
6176 return PACKET_remaining(&sc->clienthello->ciphersuites);
6179 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6181 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6186 if (sc->clienthello == NULL)
6189 *out = sc->clienthello->compressions;
6190 return sc->clienthello->compressions_len;
6193 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6198 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6203 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6205 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6206 ext = sc->clienthello->pre_proc_exts + i;
6215 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6216 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6219 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6220 ext = sc->clienthello->pre_proc_exts + i;
6222 if (ext->received_order >= num)
6224 present[ext->received_order] = ext->type;
6231 OPENSSL_free(present);
6235 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6239 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6244 if (sc->clienthello == NULL || num_exts == NULL)
6246 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6247 ext = sc->clienthello->pre_proc_exts + i;
6259 if (*num_exts < num)
6261 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6262 ext = sc->clienthello->pre_proc_exts + i;
6264 if (ext->received_order >= num)
6266 exts[ext->received_order] = ext->type;
6273 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6278 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6283 if (sc->clienthello == NULL)
6285 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6286 r = sc->clienthello->pre_proc_exts + i;
6287 if (r->present && r->type == type) {
6289 *out = PACKET_data(&r->data);
6291 *outlen = PACKET_remaining(&r->data);
6298 int SSL_free_buffers(SSL *ssl)
6301 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6308 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6311 RECORD_LAYER_release(rl);
6315 int SSL_alloc_buffers(SSL *ssl)
6317 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6322 return ssl3_setup_buffers(sc);
6325 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6327 ctx->keylog_callback = cb;
6330 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6332 return ctx->keylog_callback;
6335 static int nss_keylog_int(const char *prefix,
6337 const uint8_t *parameter_1,
6338 size_t parameter_1_len,
6339 const uint8_t *parameter_2,
6340 size_t parameter_2_len)
6343 char *cursor = NULL;
6347 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6349 if (sctx->keylog_callback == NULL)
6353 * Our output buffer will contain the following strings, rendered with
6354 * space characters in between, terminated by a NULL character: first the
6355 * prefix, then the first parameter, then the second parameter. The
6356 * meaning of each parameter depends on the specific key material being
6357 * logged. Note that the first and second parameters are encoded in
6358 * hexadecimal, so we need a buffer that is twice their lengths.
6360 prefix_len = strlen(prefix);
6361 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6362 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6363 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6367 strcpy(cursor, prefix);
6368 cursor += prefix_len;
6371 for (i = 0; i < parameter_1_len; i++) {
6372 sprintf(cursor, "%02x", parameter_1[i]);
6377 for (i = 0; i < parameter_2_len; i++) {
6378 sprintf(cursor, "%02x", parameter_2[i]);
6383 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6384 OPENSSL_clear_free(out, out_len);
6389 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6390 const uint8_t *encrypted_premaster,
6391 size_t encrypted_premaster_len,
6392 const uint8_t *premaster,
6393 size_t premaster_len)
6395 if (encrypted_premaster_len < 8) {
6396 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6400 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6401 return nss_keylog_int("RSA",
6403 encrypted_premaster,
6409 int ssl_log_secret(SSL_CONNECTION *sc,
6411 const uint8_t *secret,
6414 return nss_keylog_int(label,
6416 sc->s3.client_random,
6422 #define SSLV2_CIPHER_LEN 3
6424 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6428 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6430 if (PACKET_remaining(cipher_suites) == 0) {
6431 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6435 if (PACKET_remaining(cipher_suites) % n != 0) {
6436 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6440 OPENSSL_free(s->s3.tmp.ciphers_raw);
6441 s->s3.tmp.ciphers_raw = NULL;
6442 s->s3.tmp.ciphers_rawlen = 0;
6445 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6446 PACKET sslv2ciphers = *cipher_suites;
6447 unsigned int leadbyte;
6451 * We store the raw ciphers list in SSLv3+ format so we need to do some
6452 * preprocessing to convert the list first. If there are any SSLv2 only
6453 * ciphersuites with a non-zero leading byte then we are going to
6454 * slightly over allocate because we won't store those. But that isn't a
6457 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6458 s->s3.tmp.ciphers_raw = raw;
6460 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6463 for (s->s3.tmp.ciphers_rawlen = 0;
6464 PACKET_remaining(&sslv2ciphers) > 0;
6465 raw += TLS_CIPHER_LEN) {
6466 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6468 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6471 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6472 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6473 OPENSSL_free(s->s3.tmp.ciphers_raw);
6474 s->s3.tmp.ciphers_raw = NULL;
6475 s->s3.tmp.ciphers_rawlen = 0;
6479 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6481 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6482 &s->s3.tmp.ciphers_rawlen)) {
6483 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6489 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6490 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6491 STACK_OF(SSL_CIPHER) **scsvs)
6494 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6499 if (!PACKET_buf_init(&pkt, bytes, len))
6501 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6504 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6505 STACK_OF(SSL_CIPHER) **skp,
6506 STACK_OF(SSL_CIPHER) **scsvs_out,
6507 int sslv2format, int fatal)
6509 const SSL_CIPHER *c;
6510 STACK_OF(SSL_CIPHER) *sk = NULL;
6511 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6513 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6514 unsigned char cipher[SSLV2_CIPHER_LEN];
6516 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6518 if (PACKET_remaining(cipher_suites) == 0) {
6520 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6522 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6526 if (PACKET_remaining(cipher_suites) % n != 0) {
6528 SSLfatal(s, SSL_AD_DECODE_ERROR,
6529 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6531 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6535 sk = sk_SSL_CIPHER_new_null();
6536 scsvs = sk_SSL_CIPHER_new_null();
6537 if (sk == NULL || scsvs == NULL) {
6539 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6541 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6545 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6547 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6548 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6549 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6551 if (sslv2format && cipher[0] != '\0')
6554 /* For SSLv2-compat, ignore leading 0-byte. */
6555 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6557 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6558 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6560 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6562 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6567 if (PACKET_remaining(cipher_suites) > 0) {
6569 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6571 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6578 sk_SSL_CIPHER_free(sk);
6579 if (scsvs_out != NULL)
6582 sk_SSL_CIPHER_free(scsvs);
6585 sk_SSL_CIPHER_free(sk);
6586 sk_SSL_CIPHER_free(scsvs);
6590 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6592 ctx->max_early_data = max_early_data;
6597 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6599 return ctx->max_early_data;
6602 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6604 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6609 sc->max_early_data = max_early_data;
6614 uint32_t SSL_get_max_early_data(const SSL *s)
6616 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6621 return sc->max_early_data;
6624 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6626 ctx->recv_max_early_data = recv_max_early_data;
6631 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6633 return ctx->recv_max_early_data;
6636 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6638 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6643 sc->recv_max_early_data = recv_max_early_data;
6648 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6650 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6655 return sc->recv_max_early_data;
6658 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6660 /* Return any active Max Fragment Len extension */
6661 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6662 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6664 /* return current SSL connection setting */
6665 return sc->max_send_fragment;
6668 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6670 /* Return a value regarding an active Max Fragment Len extension */
6671 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6672 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6673 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6675 /* else limit |split_send_fragment| to current |max_send_fragment| */
6676 if (sc->split_send_fragment > sc->max_send_fragment)
6677 return sc->max_send_fragment;
6679 /* return current SSL connection setting */
6680 return sc->split_send_fragment;
6683 int SSL_stateless(SSL *s)
6686 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6688 /* TODO(QUIC): This will need further work. */
6692 /* Ensure there is no state left over from a previous invocation */
6698 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6699 ret = SSL_accept(s);
6700 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6702 if (ret > 0 && sc->ext.cookieok)
6705 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6711 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6713 ctx->pha_enabled = val;
6716 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6718 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6723 sc->pha_enabled = val;
6726 int SSL_verify_client_post_handshake(SSL *ssl)
6728 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6733 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6734 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6738 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6742 if (!SSL_is_init_finished(ssl)) {
6743 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6747 switch (sc->post_handshake_auth) {
6749 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6752 case SSL_PHA_EXT_SENT:
6753 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6755 case SSL_PHA_EXT_RECEIVED:
6757 case SSL_PHA_REQUEST_PENDING:
6758 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6760 case SSL_PHA_REQUESTED:
6761 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6765 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6767 /* checks verify_mode and algorithm_auth */
6768 if (!send_certificate_request(sc)) {
6769 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6770 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6774 ossl_statem_set_in_init(sc, 1);
6778 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6779 SSL_CTX_generate_session_ticket_fn gen_cb,
6780 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6783 ctx->generate_ticket_cb = gen_cb;
6784 ctx->decrypt_ticket_cb = dec_cb;
6785 ctx->ticket_cb_data = arg;
6789 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6790 SSL_allow_early_data_cb_fn cb,
6793 ctx->allow_early_data_cb = cb;
6794 ctx->allow_early_data_cb_data = arg;
6797 void SSL_set_allow_early_data_cb(SSL *s,
6798 SSL_allow_early_data_cb_fn cb,
6801 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6806 sc->allow_early_data_cb = cb;
6807 sc->allow_early_data_cb_data = arg;
6810 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6812 const char *properties)
6814 const EVP_CIPHER *ciph;
6816 ciph = tls_get_cipher_from_engine(nid);
6821 * If there is no engine cipher then we do an explicit fetch. This may fail
6822 * and that could be ok
6825 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6831 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6833 /* Don't up-ref an implicit EVP_CIPHER */
6834 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6838 * The cipher was explicitly fetched and therefore it is safe to cast
6841 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6844 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6849 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6851 * The cipher was explicitly fetched and therefore it is safe to cast
6854 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6858 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6860 const char *properties)
6864 md = tls_get_digest_from_engine(nid);
6868 /* Otherwise we do an explicit fetch */
6870 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6875 int ssl_evp_md_up_ref(const EVP_MD *md)
6877 /* Don't up-ref an implicit EVP_MD */
6878 if (EVP_MD_get0_provider(md) == NULL)
6882 * The digest was explicitly fetched and therefore it is safe to cast
6885 return EVP_MD_up_ref((EVP_MD *)md);
6888 void ssl_evp_md_free(const EVP_MD *md)
6893 if (EVP_MD_get0_provider(md) != NULL) {
6895 * The digest was explicitly fetched and therefore it is safe to cast
6898 EVP_MD_free((EVP_MD *)md);
6902 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6904 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6909 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6910 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6911 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6914 EVP_PKEY_free(sc->cert->dh_tmp);
6915 sc->cert->dh_tmp = dhpkey;
6919 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6921 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6922 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6923 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6926 EVP_PKEY_free(ctx->cert->dh_tmp);
6927 ctx->cert->dh_tmp = dhpkey;