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);
663 #ifndef OPENSSL_NO_DEPRECATED_3_0
664 /** Used to change an SSL_CTXs default SSL method type */
665 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
667 STACK_OF(SSL_CIPHER) *sk;
671 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
672 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
675 sk = ssl_create_cipher_list(ctx,
676 ctx->tls13_ciphersuites,
678 &(ctx->cipher_list_by_id),
679 OSSL_default_cipher_list(), ctx->cert);
680 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
681 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
688 SSL *SSL_new(SSL_CTX *ctx)
691 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_CTX);
694 if (ctx->method == NULL) {
695 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
698 return ctx->method->ssl_new(ctx);
701 int ossl_ssl_init(SSL *ssl, SSL_CTX *ctx, int type)
706 ssl->lock = CRYPTO_THREAD_lock_new();
707 if (ssl->lock == NULL)
713 ssl->method = ctx->method;
715 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, ssl, &ssl->ex_data))
721 SSL *ossl_ssl_connection_new(SSL_CTX *ctx)
726 s = OPENSSL_zalloc(sizeof(*s));
731 if (!ossl_ssl_init(ssl, ctx, SSL_TYPE_SSL_CONNECTION)) {
737 #ifndef OPENSSL_NO_QUIC
738 /* set the parent (user visible) ssl to self */
742 RECORD_LAYER_init(&s->rlayer, s);
744 s->options = ctx->options;
745 s->dane.flags = ctx->dane.flags;
746 s->min_proto_version = ctx->min_proto_version;
747 s->max_proto_version = ctx->max_proto_version;
749 s->max_cert_list = ctx->max_cert_list;
750 s->max_early_data = ctx->max_early_data;
751 s->recv_max_early_data = ctx->recv_max_early_data;
752 s->num_tickets = ctx->num_tickets;
753 s->pha_enabled = ctx->pha_enabled;
755 /* Shallow copy of the ciphersuites stack */
756 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
757 if (s->tls13_ciphersuites == NULL)
761 * Earlier library versions used to copy the pointer to the CERT, not
762 * its contents; only when setting new parameters for the per-SSL
763 * copy, ssl_cert_new would be called (and the direct reference to
764 * the per-SSL_CTX settings would be lost, but those still were
765 * indirectly accessed for various purposes, and for that reason they
766 * used to be known as s->ctx->default_cert). Now we don't look at the
767 * SSL_CTX's CERT after having duplicated it once.
769 s->cert = ssl_cert_dup(ctx->cert);
773 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
774 s->msg_callback = ctx->msg_callback;
775 s->msg_callback_arg = ctx->msg_callback_arg;
776 s->verify_mode = ctx->verify_mode;
777 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
778 s->record_padding_cb = ctx->record_padding_cb;
779 s->record_padding_arg = ctx->record_padding_arg;
780 s->block_padding = ctx->block_padding;
781 s->sid_ctx_length = ctx->sid_ctx_length;
782 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
784 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
785 s->verify_callback = ctx->default_verify_callback;
786 s->generate_session_id = ctx->generate_session_id;
788 s->param = X509_VERIFY_PARAM_new();
789 if (s->param == NULL)
791 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
792 s->quiet_shutdown = ctx->quiet_shutdown;
794 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
795 s->max_send_fragment = ctx->max_send_fragment;
796 s->split_send_fragment = ctx->split_send_fragment;
797 s->max_pipelines = ctx->max_pipelines;
798 if (s->max_pipelines > 1)
799 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
800 if (ctx->default_read_buf_len > 0)
801 SSL_set_default_read_buffer_len(ssl, ctx->default_read_buf_len);
804 s->ext.debug_arg = NULL;
805 s->ext.ticket_expected = 0;
806 s->ext.status_type = ctx->ext.status_type;
807 s->ext.status_expected = 0;
808 s->ext.ocsp.ids = NULL;
809 s->ext.ocsp.exts = NULL;
810 s->ext.ocsp.resp = NULL;
811 s->ext.ocsp.resp_len = 0;
813 s->session_ctx = ctx;
814 if (ctx->ext.ecpointformats) {
815 s->ext.ecpointformats =
816 OPENSSL_memdup(ctx->ext.ecpointformats,
817 ctx->ext.ecpointformats_len);
818 if (!s->ext.ecpointformats) {
819 s->ext.ecpointformats_len = 0;
822 s->ext.ecpointformats_len =
823 ctx->ext.ecpointformats_len;
825 if (ctx->ext.supportedgroups) {
826 s->ext.supportedgroups =
827 OPENSSL_memdup(ctx->ext.supportedgroups,
828 ctx->ext.supportedgroups_len
829 * sizeof(*ctx->ext.supportedgroups));
830 if (!s->ext.supportedgroups) {
831 s->ext.supportedgroups_len = 0;
834 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
837 #ifndef OPENSSL_NO_NEXTPROTONEG
841 if (ctx->ext.alpn != NULL) {
842 s->ext.alpn = OPENSSL_malloc(ctx->ext.alpn_len);
843 if (s->ext.alpn == NULL) {
847 memcpy(s->ext.alpn, ctx->ext.alpn, ctx->ext.alpn_len);
848 s->ext.alpn_len = ctx->ext.alpn_len;
851 s->verified_chain = NULL;
852 s->verify_result = X509_V_OK;
854 s->default_passwd_callback = ctx->default_passwd_callback;
855 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
857 s->key_update = SSL_KEY_UPDATE_NONE;
859 s->allow_early_data_cb = ctx->allow_early_data_cb;
860 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
862 if (!ssl->method->ssl_init(ssl))
865 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
870 #ifndef OPENSSL_NO_PSK
871 s->psk_client_callback = ctx->psk_client_callback;
872 s->psk_server_callback = ctx->psk_server_callback;
874 s->psk_find_session_cb = ctx->psk_find_session_cb;
875 s->psk_use_session_cb = ctx->psk_use_session_cb;
877 s->async_cb = ctx->async_cb;
878 s->async_cb_arg = ctx->async_cb_arg;
882 #ifndef OPENSSL_NO_CT
883 if (!SSL_set_ct_validation_callback(ssl, ctx->ct_validation_callback,
884 ctx->ct_validation_callback_arg))
891 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
895 int SSL_is_dtls(const SSL *s)
897 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
902 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
905 int SSL_up_ref(SSL *s)
909 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
912 REF_PRINT_COUNT("SSL", s);
913 REF_ASSERT_ISNT(i < 2);
914 return ((i > 1) ? 1 : 0);
917 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
918 unsigned int sid_ctx_len)
920 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
921 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
924 ctx->sid_ctx_length = sid_ctx_len;
925 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
930 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
931 unsigned int sid_ctx_len)
933 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
938 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
939 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
942 sc->sid_ctx_length = sid_ctx_len;
943 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
948 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
950 if (!CRYPTO_THREAD_write_lock(ctx->lock))
952 ctx->generate_session_id = cb;
953 CRYPTO_THREAD_unlock(ctx->lock);
957 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
959 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
961 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
963 sc->generate_session_id = cb;
964 CRYPTO_THREAD_unlock(ssl->lock);
968 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
972 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
973 * we can "construct" a session to give us the desired check - i.e. to
974 * find if there's a session in the hash table that would conflict with
975 * any new session built out of this id/id_len and the ssl_version in use
979 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
981 if (sc == NULL || id_len > sizeof(r.session_id))
984 r.ssl_version = sc->version;
985 r.session_id_length = id_len;
986 memcpy(r.session_id, id, id_len);
988 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
990 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
991 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
995 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
997 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1000 int SSL_set_purpose(SSL *s, int purpose)
1002 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1007 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1010 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1012 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1015 int SSL_set_trust(SSL *s, int trust)
1017 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1022 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1025 int SSL_set1_host(SSL *s, const char *hostname)
1027 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1032 /* If a hostname is provided and parses as an IP address,
1033 * treat it as such. */
1034 if (hostname != NULL
1035 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1038 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1041 int SSL_add1_host(SSL *s, const char *hostname)
1043 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1048 /* If a hostname is provided and parses as an IP address,
1049 * treat it as such. */
1052 ASN1_OCTET_STRING *ip;
1055 ip = a2i_IPADDRESS(hostname);
1057 /* We didn't want it; only to check if it *is* an IP address */
1058 ASN1_OCTET_STRING_free(ip);
1060 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1063 OPENSSL_free(old_ip);
1064 /* There can be only one IP address */
1068 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1072 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1075 void SSL_set_hostflags(SSL *s, unsigned int flags)
1077 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1082 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1085 const char *SSL_get0_peername(SSL *s)
1087 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1092 return X509_VERIFY_PARAM_get0_peername(sc->param);
1095 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1097 return dane_ctx_enable(&ctx->dane);
1100 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1102 unsigned long orig = ctx->dane.flags;
1104 ctx->dane.flags |= flags;
1108 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1110 unsigned long orig = ctx->dane.flags;
1112 ctx->dane.flags &= ~flags;
1116 int SSL_dane_enable(SSL *s, const char *basedomain)
1119 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1125 if (s->ctx->dane.mdmax == 0) {
1126 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1129 if (dane->trecs != NULL) {
1130 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1135 * Default SNI name. This rejects empty names, while set1_host below
1136 * accepts them and disables host name checks. To avoid side-effects with
1137 * invalid input, set the SNI name first.
1139 if (sc->ext.hostname == NULL) {
1140 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1141 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1146 /* Primary RFC6125 reference identifier */
1147 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1148 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1154 dane->dctx = &s->ctx->dane;
1155 dane->trecs = sk_danetls_record_new_null();
1157 if (dane->trecs == NULL) {
1158 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1164 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1167 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1172 orig = sc->dane.flags;
1174 sc->dane.flags |= flags;
1178 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1181 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1186 orig = sc->dane.flags;
1188 sc->dane.flags &= ~flags;
1192 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1195 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1202 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1206 *mcert = dane->mcert;
1208 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1213 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1214 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1217 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1224 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1228 *usage = dane->mtlsa->usage;
1230 *selector = dane->mtlsa->selector;
1232 *mtype = dane->mtlsa->mtype;
1234 *data = dane->mtlsa->data;
1236 *dlen = dane->mtlsa->dlen;
1241 SSL_DANE *SSL_get0_dane(SSL *s)
1243 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1251 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1252 uint8_t mtype, const unsigned char *data, size_t dlen)
1254 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1259 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1262 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1265 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1268 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1270 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1273 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1275 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1280 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1283 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1288 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1290 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1298 void SSL_certs_clear(SSL *s)
1300 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1305 ssl_cert_clear_certs(sc->cert);
1308 void SSL_free(SSL *s)
1314 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1315 REF_PRINT_COUNT("SSL", s);
1318 REF_ASSERT_ISNT(i < 0);
1320 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1322 if (s->method != NULL)
1323 s->method->ssl_free(s);
1325 SSL_CTX_free(s->ctx);
1326 CRYPTO_THREAD_lock_free(s->lock);
1331 void ossl_ssl_connection_free(SSL *ssl)
1335 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1339 X509_VERIFY_PARAM_free(s->param);
1340 dane_final(&s->dane);
1342 RECORD_LAYER_release(&s->rlayer);
1344 /* Ignore return value */
1345 ssl_free_wbio_buffer(s);
1347 BIO_free_all(s->wbio);
1349 BIO_free_all(s->rbio);
1352 BUF_MEM_free(s->init_buf);
1354 /* add extra stuff */
1355 sk_SSL_CIPHER_free(s->cipher_list);
1356 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1357 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1358 sk_SSL_CIPHER_free(s->peer_ciphers);
1360 /* Make the next call work :-) */
1361 if (s->session != NULL) {
1362 ssl_clear_bad_session(s);
1363 SSL_SESSION_free(s->session);
1365 SSL_SESSION_free(s->psksession);
1366 OPENSSL_free(s->psksession_id);
1370 ssl_cert_free(s->cert);
1371 OPENSSL_free(s->shared_sigalgs);
1372 /* Free up if allocated */
1374 OPENSSL_free(s->ext.hostname);
1375 SSL_CTX_free(s->session_ctx);
1376 OPENSSL_free(s->ext.ecpointformats);
1377 OPENSSL_free(s->ext.peer_ecpointformats);
1378 OPENSSL_free(s->ext.supportedgroups);
1379 OPENSSL_free(s->ext.peer_supportedgroups);
1380 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1381 #ifndef OPENSSL_NO_OCSP
1382 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1384 #ifndef OPENSSL_NO_CT
1385 SCT_LIST_free(s->scts);
1386 OPENSSL_free(s->ext.scts);
1388 OPENSSL_free(s->ext.ocsp.resp);
1389 OPENSSL_free(s->ext.alpn);
1390 OPENSSL_free(s->ext.tls13_cookie);
1391 if (s->clienthello != NULL)
1392 OPENSSL_free(s->clienthello->pre_proc_exts);
1393 OPENSSL_free(s->clienthello);
1394 OPENSSL_free(s->pha_context);
1395 EVP_MD_CTX_free(s->pha_dgst);
1397 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1398 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1400 OSSL_STACK_OF_X509_free(s->verified_chain);
1402 if (ssl->method != NULL)
1403 ssl->method->ssl_deinit(ssl);
1405 ASYNC_WAIT_CTX_free(s->waitctx);
1407 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1408 OPENSSL_free(s->ext.npn);
1411 #ifndef OPENSSL_NO_SRTP
1412 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1416 void SSL_set0_rbio(SSL *s, BIO *rbio)
1418 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1423 BIO_free_all(sc->rbio);
1427 void SSL_set0_wbio(SSL *s, BIO *wbio)
1429 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1435 * If the output buffering BIO is still in place, remove it
1437 if (sc->bbio != NULL)
1438 sc->wbio = BIO_pop(sc->wbio);
1440 BIO_free_all(sc->wbio);
1443 /* Re-attach |bbio| to the new |wbio|. */
1444 if (sc->bbio != NULL)
1445 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1448 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1451 * For historical reasons, this function has many different cases in
1452 * ownership handling.
1455 /* If nothing has changed, do nothing */
1456 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1460 * If the two arguments are equal then one fewer reference is granted by the
1461 * caller than we want to take
1463 if (rbio != NULL && rbio == wbio)
1467 * If only the wbio is changed only adopt one reference.
1469 if (rbio == SSL_get_rbio(s)) {
1470 SSL_set0_wbio(s, wbio);
1474 * There is an asymmetry here for historical reasons. If only the rbio is
1475 * changed AND the rbio and wbio were originally different, then we only
1476 * adopt one reference.
1478 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1479 SSL_set0_rbio(s, rbio);
1483 /* Otherwise, adopt both references. */
1484 SSL_set0_rbio(s, rbio);
1485 SSL_set0_wbio(s, wbio);
1488 BIO *SSL_get_rbio(const SSL *s)
1490 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1498 BIO *SSL_get_wbio(const SSL *s)
1500 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1505 if (sc->bbio != NULL) {
1507 * If |bbio| is active, the true caller-configured BIO is its
1510 return BIO_next(sc->bbio);
1515 int SSL_get_fd(const SSL *s)
1517 return SSL_get_rfd(s);
1520 int SSL_get_rfd(const SSL *s)
1525 b = SSL_get_rbio(s);
1526 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1528 BIO_get_fd(r, &ret);
1532 int SSL_get_wfd(const SSL *s)
1537 b = SSL_get_wbio(s);
1538 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1540 BIO_get_fd(r, &ret);
1544 #ifndef OPENSSL_NO_SOCK
1545 int SSL_set_fd(SSL *s, int fd)
1550 bio = BIO_new(BIO_s_socket());
1553 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1556 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1557 SSL_set_bio(s, bio, bio);
1558 #ifndef OPENSSL_NO_KTLS
1560 * The new socket is created successfully regardless of ktls_enable.
1561 * ktls_enable doesn't change any functionality of the socket, except
1562 * changing the setsockopt to enable the processing of ktls_start.
1563 * Thus, it is not a problem to call it for non-TLS sockets.
1566 #endif /* OPENSSL_NO_KTLS */
1572 int SSL_set_wfd(SSL *s, int fd)
1574 BIO *rbio = SSL_get_rbio(s);
1576 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1577 || (int)BIO_get_fd(rbio, NULL) != fd) {
1578 BIO *bio = BIO_new(BIO_s_socket());
1581 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1584 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1585 SSL_set0_wbio(s, bio);
1586 #ifndef OPENSSL_NO_KTLS
1588 * The new socket is created successfully regardless of ktls_enable.
1589 * ktls_enable doesn't change any functionality of the socket, except
1590 * changing the setsockopt to enable the processing of ktls_start.
1591 * Thus, it is not a problem to call it for non-TLS sockets.
1594 #endif /* OPENSSL_NO_KTLS */
1597 SSL_set0_wbio(s, rbio);
1602 int SSL_set_rfd(SSL *s, int fd)
1604 BIO *wbio = SSL_get_wbio(s);
1606 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1607 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1608 BIO *bio = BIO_new(BIO_s_socket());
1611 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1614 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1615 SSL_set0_rbio(s, bio);
1618 SSL_set0_rbio(s, wbio);
1625 /* return length of latest Finished message we sent, copy to 'buf' */
1626 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1629 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1634 ret = sc->s3.tmp.finish_md_len;
1637 memcpy(buf, sc->s3.tmp.finish_md, count);
1641 /* return length of latest Finished message we expected, copy to 'buf' */
1642 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1645 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1650 ret = sc->s3.tmp.peer_finish_md_len;
1653 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1657 int SSL_get_verify_mode(const SSL *s)
1659 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1664 return sc->verify_mode;
1667 int SSL_get_verify_depth(const SSL *s)
1669 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1674 return X509_VERIFY_PARAM_get_depth(sc->param);
1677 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1678 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1683 return sc->verify_callback;
1686 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1688 return ctx->verify_mode;
1691 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1693 return X509_VERIFY_PARAM_get_depth(ctx->param);
1696 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1697 return ctx->default_verify_callback;
1700 void SSL_set_verify(SSL *s, int mode,
1701 int (*callback) (int ok, X509_STORE_CTX *ctx))
1703 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1708 sc->verify_mode = mode;
1709 if (callback != NULL)
1710 sc->verify_callback = callback;
1713 void SSL_set_verify_depth(SSL *s, int depth)
1715 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1720 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1723 void SSL_set_read_ahead(SSL *s, int yes)
1725 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1730 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1733 int SSL_get_read_ahead(const SSL *s)
1735 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1740 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1743 int SSL_pending(const SSL *s)
1745 size_t pending = s->method->ssl_pending(s);
1748 * SSL_pending cannot work properly if read-ahead is enabled
1749 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1750 * impossible to fix since SSL_pending cannot report errors that may be
1751 * observed while scanning the new data. (Note that SSL_pending() is
1752 * often used as a boolean value, so we'd better not return -1.)
1754 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1755 * we just return INT_MAX.
1757 return pending < INT_MAX ? (int)pending : INT_MAX;
1760 int SSL_has_pending(const SSL *s)
1763 * Similar to SSL_pending() but returns a 1 to indicate that we have
1764 * processed or unprocessed data available or 0 otherwise (as opposed to the
1765 * number of bytes available). Unlike SSL_pending() this will take into
1766 * account read_ahead data. A 1 return simply indicates that we have data.
1767 * That data may not result in any application data, or we may fail to parse
1768 * the records for some reason.
1770 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1772 /* Check buffered app data if any first */
1773 if (SSL_CONNECTION_IS_DTLS(sc)) {
1774 DTLS1_RECORD_DATA *rdata;
1777 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1778 while ((item = pqueue_next(&iter)) != NULL) {
1780 if (rdata->rrec.length > 0)
1785 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1788 return RECORD_LAYER_read_pending(&sc->rlayer);
1791 X509 *SSL_get1_peer_certificate(const SSL *s)
1793 X509 *r = SSL_get0_peer_certificate(s);
1801 X509 *SSL_get0_peer_certificate(const SSL *s)
1803 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1808 if (sc->session == NULL)
1811 return sc->session->peer;
1814 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1817 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1822 if (sc->session == NULL)
1825 r = sc->session->peer_chain;
1828 * If we are a client, cert_chain includes the peer's own certificate; if
1829 * we are a server, it does not.
1836 * Now in theory, since the calling process own 't' it should be safe to
1837 * modify. We need to be able to read f without being hassled
1839 int SSL_copy_session_id(SSL *t, const SSL *f)
1842 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1843 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1844 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1846 if (tsc == NULL || fsc == NULL)
1849 /* Do we need to do SSL locking? */
1850 if (!SSL_set_session(t, SSL_get_session(f))) {
1855 * what if we are setup for one protocol version but want to talk another
1857 if (t->method != f->method) {
1858 t->method->ssl_deinit(t);
1859 t->method = f->method;
1860 if (t->method->ssl_init(t) == 0)
1864 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1865 ssl_cert_free(tsc->cert);
1866 tsc->cert = fsc->cert;
1867 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1874 /* Fix this so it checks all the valid key/cert options */
1875 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1877 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1878 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1881 if (ctx->cert->key->privatekey == NULL) {
1882 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1885 return X509_check_private_key
1886 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1889 /* Fix this function so that it takes an optional type parameter */
1890 int SSL_check_private_key(const SSL *ssl)
1892 const SSL_CONNECTION *sc;
1894 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1895 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1898 if (sc->cert->key->x509 == NULL) {
1899 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1902 if (sc->cert->key->privatekey == NULL) {
1903 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1906 return X509_check_private_key(sc->cert->key->x509,
1907 sc->cert->key->privatekey);
1910 int SSL_waiting_for_async(SSL *s)
1912 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1923 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1925 ASYNC_WAIT_CTX *ctx;
1926 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1931 if ((ctx = sc->waitctx) == NULL)
1933 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1936 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1937 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1939 ASYNC_WAIT_CTX *ctx;
1940 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1945 if ((ctx = sc->waitctx) == NULL)
1947 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1951 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1953 ctx->async_cb = callback;
1957 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1959 ctx->async_cb_arg = arg;
1963 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1965 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1970 sc->async_cb = callback;
1974 int SSL_set_async_callback_arg(SSL *s, void *arg)
1976 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1981 sc->async_cb_arg = arg;
1985 int SSL_get_async_status(SSL *s, int *status)
1987 ASYNC_WAIT_CTX *ctx;
1988 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1993 if ((ctx = sc->waitctx) == NULL)
1995 *status = ASYNC_WAIT_CTX_get_status(ctx);
1999 int SSL_accept(SSL *s)
2001 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2006 if (sc->handshake_func == NULL) {
2007 /* Not properly initialized yet */
2008 SSL_set_accept_state(s);
2011 return SSL_do_handshake(s);
2014 int SSL_connect(SSL *s)
2016 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2021 if (sc->handshake_func == NULL) {
2022 /* Not properly initialized yet */
2023 SSL_set_connect_state(s);
2026 return SSL_do_handshake(s);
2029 long SSL_get_default_timeout(const SSL *s)
2031 return s->method->get_timeout();
2034 static int ssl_async_wait_ctx_cb(void *arg)
2036 SSL *s = (SSL *)arg;
2037 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2042 return sc->async_cb(s, sc->async_cb_arg);
2045 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2046 int (*func) (void *))
2049 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2054 if (sc->waitctx == NULL) {
2055 sc->waitctx = ASYNC_WAIT_CTX_new();
2056 if (sc->waitctx == NULL)
2058 if (sc->async_cb != NULL
2059 && !ASYNC_WAIT_CTX_set_callback
2060 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2064 sc->rwstate = SSL_NOTHING;
2065 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2066 sizeof(struct ssl_async_args))) {
2068 sc->rwstate = SSL_NOTHING;
2069 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2072 sc->rwstate = SSL_ASYNC_PAUSED;
2075 sc->rwstate = SSL_ASYNC_NO_JOBS;
2081 sc->rwstate = SSL_NOTHING;
2082 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2083 /* Shouldn't happen */
2088 static int ssl_io_intern(void *vargs)
2090 struct ssl_async_args *args;
2096 args = (struct ssl_async_args *)vargs;
2100 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2103 switch (args->type) {
2105 return args->f.func_read(s, buf, num, &sc->asyncrw);
2107 return args->f.func_write(s, buf, num, &sc->asyncrw);
2109 return args->f.func_other(s);
2114 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2116 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2121 if (sc->handshake_func == NULL) {
2122 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2126 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2127 sc->rwstate = SSL_NOTHING;
2131 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2132 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2133 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2137 * If we are a client and haven't received the ServerHello etc then we
2140 ossl_statem_check_finish_init(sc, 0);
2142 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2143 struct ssl_async_args args;
2149 args.type = READFUNC;
2150 args.f.func_read = s->method->ssl_read;
2152 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2153 *readbytes = sc->asyncrw;
2156 return s->method->ssl_read(s, buf, num, readbytes);
2160 int SSL_read(SSL *s, void *buf, int num)
2166 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2170 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2173 * The cast is safe here because ret should be <= INT_MAX because num is
2177 ret = (int)readbytes;
2182 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2184 int ret = ssl_read_internal(s, buf, num, readbytes);
2191 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2194 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2196 /* TODO(QUIC): This will need special handling for QUIC */
2201 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2202 return SSL_READ_EARLY_DATA_ERROR;
2205 switch (sc->early_data_state) {
2206 case SSL_EARLY_DATA_NONE:
2207 if (!SSL_in_before(s)) {
2208 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2209 return SSL_READ_EARLY_DATA_ERROR;
2213 case SSL_EARLY_DATA_ACCEPT_RETRY:
2214 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2215 ret = SSL_accept(s);
2218 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2219 return SSL_READ_EARLY_DATA_ERROR;
2223 case SSL_EARLY_DATA_READ_RETRY:
2224 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2225 sc->early_data_state = SSL_EARLY_DATA_READING;
2226 ret = SSL_read_ex(s, buf, num, readbytes);
2228 * State machine will update early_data_state to
2229 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2232 if (ret > 0 || (ret <= 0 && sc->early_data_state
2233 != SSL_EARLY_DATA_FINISHED_READING)) {
2234 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2235 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2236 : SSL_READ_EARLY_DATA_ERROR;
2239 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2242 return SSL_READ_EARLY_DATA_FINISH;
2245 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2246 return SSL_READ_EARLY_DATA_ERROR;
2250 int SSL_get_early_data_status(const SSL *s)
2252 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2254 /* TODO(QUIC): This will need special handling for QUIC */
2258 return sc->ext.early_data;
2261 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2263 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2268 if (sc->handshake_func == NULL) {
2269 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2273 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2276 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2277 struct ssl_async_args args;
2283 args.type = READFUNC;
2284 args.f.func_read = s->method->ssl_peek;
2286 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2287 *readbytes = sc->asyncrw;
2290 return s->method->ssl_peek(s, buf, num, readbytes);
2294 int SSL_peek(SSL *s, void *buf, int num)
2300 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2304 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2307 * The cast is safe here because ret should be <= INT_MAX because num is
2311 ret = (int)readbytes;
2317 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2319 int ret = ssl_peek_internal(s, buf, num, readbytes);
2326 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2328 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2333 if (sc->handshake_func == NULL) {
2334 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2338 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2339 sc->rwstate = SSL_NOTHING;
2340 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2344 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2345 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2346 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2347 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2350 /* If we are a client and haven't sent the Finished we better do that */
2351 ossl_statem_check_finish_init(sc, 1);
2353 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2355 struct ssl_async_args args;
2358 args.buf = (void *)buf;
2360 args.type = WRITEFUNC;
2361 args.f.func_write = s->method->ssl_write;
2363 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2364 *written = sc->asyncrw;
2367 return s->method->ssl_write(s, buf, num, written);
2371 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2374 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2379 if (sc->handshake_func == NULL) {
2380 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2384 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2385 sc->rwstate = SSL_NOTHING;
2386 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2390 if (!BIO_get_ktls_send(sc->wbio)) {
2391 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2395 /* If we have an alert to send, lets send it */
2396 if (sc->s3.alert_dispatch) {
2397 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2399 /* SSLfatal() already called if appropriate */
2402 /* if it went, fall through and send more stuff */
2405 sc->rwstate = SSL_WRITING;
2406 if (BIO_flush(sc->wbio) <= 0) {
2407 if (!BIO_should_retry(sc->wbio)) {
2408 sc->rwstate = SSL_NOTHING;
2411 set_sys_error(EAGAIN);
2417 #ifdef OPENSSL_NO_KTLS
2418 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2419 "can't call ktls_sendfile(), ktls disabled");
2422 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2424 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2425 if ((get_last_sys_error() == EAGAIN) ||
2426 (get_last_sys_error() == EINTR) ||
2427 (get_last_sys_error() == EBUSY))
2428 BIO_set_retry_write(sc->wbio);
2431 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2434 sc->rwstate = SSL_NOTHING;
2439 int SSL_write(SSL *s, const void *buf, int num)
2445 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2449 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2452 * The cast is safe here because ret should be <= INT_MAX because num is
2461 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2463 int ret = ssl_write_internal(s, buf, num, written);
2470 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2472 int ret, early_data_state;
2474 uint32_t partialwrite;
2475 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2477 /* TODO(QUIC): This will need special handling for QUIC */
2481 switch (sc->early_data_state) {
2482 case SSL_EARLY_DATA_NONE:
2484 || !SSL_in_before(s)
2485 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2486 && (sc->psk_use_session_cb == NULL))) {
2487 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2492 case SSL_EARLY_DATA_CONNECT_RETRY:
2493 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2494 ret = SSL_connect(s);
2497 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2502 case SSL_EARLY_DATA_WRITE_RETRY:
2503 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2505 * We disable partial write for early data because we don't keep track
2506 * of how many bytes we've written between the SSL_write_ex() call and
2507 * the flush if the flush needs to be retried)
2509 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2510 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2511 ret = SSL_write_ex(s, buf, num, &writtmp);
2512 sc->mode |= partialwrite;
2514 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2517 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2520 case SSL_EARLY_DATA_WRITE_FLUSH:
2521 /* The buffering BIO is still in place so we need to flush it */
2522 if (statem_flush(sc) != 1)
2525 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2528 case SSL_EARLY_DATA_FINISHED_READING:
2529 case SSL_EARLY_DATA_READ_RETRY:
2530 early_data_state = sc->early_data_state;
2531 /* We are a server writing to an unauthenticated client */
2532 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2533 ret = SSL_write_ex(s, buf, num, written);
2534 /* The buffering BIO is still in place */
2536 (void)BIO_flush(sc->wbio);
2537 sc->early_data_state = early_data_state;
2541 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2546 int SSL_shutdown(SSL *s)
2549 * Note that this function behaves differently from what one might
2550 * expect. Return values are 0 for no success (yet), 1 for success; but
2551 * calling it once is usually not enough, even if blocking I/O is used
2552 * (see ssl3_shutdown).
2554 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2559 if (sc->handshake_func == NULL) {
2560 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2564 if (!SSL_in_init(s)) {
2565 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2566 struct ssl_async_args args;
2568 memset(&args, 0, sizeof(args));
2570 args.type = OTHERFUNC;
2571 args.f.func_other = s->method->ssl_shutdown;
2573 return ssl_start_async_job(s, &args, ssl_io_intern);
2575 return s->method->ssl_shutdown(s);
2578 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2583 int SSL_key_update(SSL *s, int updatetype)
2585 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2590 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2591 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2595 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2596 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2597 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2601 if (!SSL_is_init_finished(s)) {
2602 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2606 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2607 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2611 ossl_statem_set_in_init(sc, 1);
2612 sc->key_update = updatetype;
2616 int SSL_get_key_update_type(const SSL *s)
2618 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2623 return sc->key_update;
2627 * Can we accept a renegotiation request? If yes, set the flag and
2628 * return 1 if yes. If not, raise error and return 0.
2630 static int can_renegotiate(const SSL_CONNECTION *sc)
2632 if (SSL_CONNECTION_IS_TLS13(sc)) {
2633 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2637 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2638 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2645 int SSL_renegotiate(SSL *s)
2647 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2652 if (!can_renegotiate(sc))
2655 sc->renegotiate = 1;
2656 sc->new_session = 1;
2657 return s->method->ssl_renegotiate(s);
2660 int SSL_renegotiate_abbreviated(SSL *s)
2662 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2667 if (!can_renegotiate(sc))
2670 sc->renegotiate = 1;
2671 sc->new_session = 0;
2672 return s->method->ssl_renegotiate(s);
2675 int SSL_renegotiate_pending(const SSL *s)
2677 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2683 * becomes true when negotiation is requested; false again once a
2684 * handshake has finished
2686 return (sc->renegotiate != 0);
2689 int SSL_new_session_ticket(SSL *s)
2691 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2696 /* If we are in init because we're sending tickets, okay to send more. */
2697 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2698 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2699 || !SSL_CONNECTION_IS_TLS13(sc))
2701 sc->ext.extra_tickets_expected++;
2702 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2703 ossl_statem_set_in_init(sc, 1);
2707 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2710 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2712 /* TODO(QUIC): Special handling for some ctrls will be needed */
2717 case SSL_CTRL_GET_READ_AHEAD:
2718 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2719 case SSL_CTRL_SET_READ_AHEAD:
2720 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2721 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2724 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2725 sc->msg_callback_arg = parg;
2729 return (sc->mode |= larg);
2730 case SSL_CTRL_CLEAR_MODE:
2731 return (sc->mode &= ~larg);
2732 case SSL_CTRL_GET_MAX_CERT_LIST:
2733 return (long)sc->max_cert_list;
2734 case SSL_CTRL_SET_MAX_CERT_LIST:
2737 l = (long)sc->max_cert_list;
2738 sc->max_cert_list = (size_t)larg;
2740 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2741 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2743 #ifndef OPENSSL_NO_KTLS
2744 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2746 #endif /* OPENSSL_NO_KTLS */
2747 sc->max_send_fragment = larg;
2748 if (sc->max_send_fragment < sc->split_send_fragment)
2749 sc->split_send_fragment = sc->max_send_fragment;
2751 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2752 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2754 sc->split_send_fragment = larg;
2756 case SSL_CTRL_SET_MAX_PIPELINES:
2757 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2759 sc->max_pipelines = larg;
2761 RECORD_LAYER_set_read_ahead(&sc->rlayer, 1);
2763 case SSL_CTRL_GET_RI_SUPPORT:
2764 return sc->s3.send_connection_binding;
2765 case SSL_CTRL_SET_RETRY_VERIFY:
2766 sc->rwstate = SSL_RETRY_VERIFY;
2768 case SSL_CTRL_CERT_FLAGS:
2769 return (sc->cert->cert_flags |= larg);
2770 case SSL_CTRL_CLEAR_CERT_FLAGS:
2771 return (sc->cert->cert_flags &= ~larg);
2773 case SSL_CTRL_GET_RAW_CIPHERLIST:
2775 if (sc->s3.tmp.ciphers_raw == NULL)
2777 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2778 return (int)sc->s3.tmp.ciphers_rawlen;
2780 return TLS_CIPHER_LEN;
2782 case SSL_CTRL_GET_EXTMS_SUPPORT:
2783 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2785 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2789 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2790 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2791 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2792 &sc->min_proto_version);
2793 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2794 return sc->min_proto_version;
2795 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2796 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2797 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2798 &sc->max_proto_version);
2799 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2800 return sc->max_proto_version;
2802 return s->method->ssl_ctrl(s, cmd, larg, parg);
2806 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2808 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2814 case SSL_CTRL_SET_MSG_CALLBACK:
2815 sc->msg_callback = (void (*)
2816 (int write_p, int version, int content_type,
2817 const void *buf, size_t len, SSL *ssl,
2822 return s->method->ssl_callback_ctrl(s, cmd, fp);
2826 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2828 return ctx->sessions;
2831 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2835 if (ssl_tsan_lock(ctx)) {
2836 res = tsan_load(stat);
2837 ssl_tsan_unlock(ctx);
2842 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2845 /* For some cases with ctx == NULL perform syntax checks */
2848 case SSL_CTRL_SET_GROUPS_LIST:
2849 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2850 case SSL_CTRL_SET_SIGALGS_LIST:
2851 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2852 return tls1_set_sigalgs_list(NULL, parg, 0);
2859 case SSL_CTRL_GET_READ_AHEAD:
2860 return ctx->read_ahead;
2861 case SSL_CTRL_SET_READ_AHEAD:
2862 l = ctx->read_ahead;
2863 ctx->read_ahead = larg;
2866 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2867 ctx->msg_callback_arg = parg;
2870 case SSL_CTRL_GET_MAX_CERT_LIST:
2871 return (long)ctx->max_cert_list;
2872 case SSL_CTRL_SET_MAX_CERT_LIST:
2875 l = (long)ctx->max_cert_list;
2876 ctx->max_cert_list = (size_t)larg;
2879 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2882 l = (long)ctx->session_cache_size;
2883 ctx->session_cache_size = (size_t)larg;
2885 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2886 return (long)ctx->session_cache_size;
2887 case SSL_CTRL_SET_SESS_CACHE_MODE:
2888 l = ctx->session_cache_mode;
2889 ctx->session_cache_mode = larg;
2891 case SSL_CTRL_GET_SESS_CACHE_MODE:
2892 return ctx->session_cache_mode;
2894 case SSL_CTRL_SESS_NUMBER:
2895 return lh_SSL_SESSION_num_items(ctx->sessions);
2896 case SSL_CTRL_SESS_CONNECT:
2897 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2898 case SSL_CTRL_SESS_CONNECT_GOOD:
2899 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2900 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2901 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2902 case SSL_CTRL_SESS_ACCEPT:
2903 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2904 case SSL_CTRL_SESS_ACCEPT_GOOD:
2905 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2906 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2907 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2908 case SSL_CTRL_SESS_HIT:
2909 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2910 case SSL_CTRL_SESS_CB_HIT:
2911 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2912 case SSL_CTRL_SESS_MISSES:
2913 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2914 case SSL_CTRL_SESS_TIMEOUTS:
2915 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2916 case SSL_CTRL_SESS_CACHE_FULL:
2917 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2919 return (ctx->mode |= larg);
2920 case SSL_CTRL_CLEAR_MODE:
2921 return (ctx->mode &= ~larg);
2922 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2923 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2925 ctx->max_send_fragment = larg;
2926 if (ctx->max_send_fragment < ctx->split_send_fragment)
2927 ctx->split_send_fragment = ctx->max_send_fragment;
2929 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2930 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2932 ctx->split_send_fragment = larg;
2934 case SSL_CTRL_SET_MAX_PIPELINES:
2935 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2937 ctx->max_pipelines = larg;
2939 case SSL_CTRL_CERT_FLAGS:
2940 return (ctx->cert->cert_flags |= larg);
2941 case SSL_CTRL_CLEAR_CERT_FLAGS:
2942 return (ctx->cert->cert_flags &= ~larg);
2943 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2944 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2945 && ssl_set_version_bound(ctx->method->version, (int)larg,
2946 &ctx->min_proto_version);
2947 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2948 return ctx->min_proto_version;
2949 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2950 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2951 && ssl_set_version_bound(ctx->method->version, (int)larg,
2952 &ctx->max_proto_version);
2953 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2954 return ctx->max_proto_version;
2956 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2960 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2963 case SSL_CTRL_SET_MSG_CALLBACK:
2964 ctx->msg_callback = (void (*)
2965 (int write_p, int version, int content_type,
2966 const void *buf, size_t len, SSL *ssl,
2971 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2975 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2984 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2985 const SSL_CIPHER *const *bp)
2987 if ((*ap)->id > (*bp)->id)
2989 if ((*ap)->id < (*bp)->id)
2995 * return a STACK of the ciphers available for the SSL and in order of
2998 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3000 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3003 if (sc->cipher_list != NULL) {
3004 return sc->cipher_list;
3005 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3006 return s->ctx->cipher_list;
3012 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3014 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3016 if (sc == NULL || !sc->server)
3018 return sc->peer_ciphers;
3021 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3023 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3025 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3030 ciphers = SSL_get_ciphers(s);
3033 if (!ssl_set_client_disabled(sc))
3035 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3036 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3037 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3039 sk = sk_SSL_CIPHER_new_null();
3042 if (!sk_SSL_CIPHER_push(sk, c)) {
3043 sk_SSL_CIPHER_free(sk);
3051 /** return a STACK of the ciphers available for the SSL and in order of
3053 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3056 if (s->cipher_list_by_id != NULL)
3057 return s->cipher_list_by_id;
3058 else if (s->ssl.ctx != NULL
3059 && s->ssl.ctx->cipher_list_by_id != NULL)
3060 return s->ssl.ctx->cipher_list_by_id;
3065 /** The old interface to get the same thing as SSL_get_ciphers() */
3066 const char *SSL_get_cipher_list(const SSL *s, int n)
3068 const SSL_CIPHER *c;
3069 STACK_OF(SSL_CIPHER) *sk;
3073 sk = SSL_get_ciphers(s);
3074 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3076 c = sk_SSL_CIPHER_value(sk, n);
3082 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3084 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3087 return ctx->cipher_list;
3092 * Distinguish between ciphers controlled by set_ciphersuite() and
3093 * set_cipher_list() when counting.
3095 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3098 const SSL_CIPHER *c;
3102 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3103 c = sk_SSL_CIPHER_value(sk, i);
3104 if (c->min_tls >= TLS1_3_VERSION)
3111 /** specify the ciphers to be used by default by the SSL_CTX */
3112 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3114 STACK_OF(SSL_CIPHER) *sk;
3116 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3117 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3120 * ssl_create_cipher_list may return an empty stack if it was unable to
3121 * find a cipher matching the given rule string (for example if the rule
3122 * string specifies a cipher which has been disabled). This is not an
3123 * error as far as ssl_create_cipher_list is concerned, and hence
3124 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3128 else if (cipher_list_tls12_num(sk) == 0) {
3129 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3135 /** specify the ciphers to be used by the SSL */
3136 int SSL_set_cipher_list(SSL *s, const char *str)
3138 STACK_OF(SSL_CIPHER) *sk;
3139 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3144 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3145 &sc->cipher_list, &sc->cipher_list_by_id, str,
3147 /* see comment in SSL_CTX_set_cipher_list */
3150 else if (cipher_list_tls12_num(sk) == 0) {
3151 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3157 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3160 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3161 const SSL_CIPHER *c;
3163 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3169 || sc->peer_ciphers == NULL
3174 clntsk = sc->peer_ciphers;
3175 srvrsk = SSL_get_ciphers(s);
3176 if (clntsk == NULL || srvrsk == NULL)
3179 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3182 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3185 c = sk_SSL_CIPHER_value(clntsk, i);
3186 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3189 n = strlen(c->name);
3206 * Return the requested servername (SNI) value. Note that the behaviour varies
3208 * - whether this is called by the client or the server,
3209 * - if we are before or during/after the handshake,
3210 * - if a resumption or normal handshake is being attempted/has occurred
3211 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3213 * Note that only the host_name type is defined (RFC 3546).
3215 const char *SSL_get_servername(const SSL *s, const int type)
3217 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3224 * If we don't know if we are the client or the server yet then we assume
3227 server = sc->handshake_func == NULL ? 0 : sc->server;
3229 if (type != TLSEXT_NAMETYPE_host_name)
3235 * In TLSv1.3 on the server SNI is not associated with the session
3236 * but in TLSv1.2 or below it is.
3238 * Before the handshake:
3241 * During/after the handshake (TLSv1.2 or below resumption occurred):
3242 * - If a servername was accepted by the server in the original
3243 * handshake then it will return that servername, or NULL otherwise.
3245 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3246 * - The function will return the servername requested by the client in
3247 * this handshake or NULL if none was requested.
3249 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3250 return sc->session->ext.hostname;
3255 * Before the handshake:
3256 * - If a servername has been set via a call to
3257 * SSL_set_tlsext_host_name() then it will return that servername
3258 * - If one has not been set, but a TLSv1.2 resumption is being
3259 * attempted and the session from the original handshake had a
3260 * servername accepted by the server then it will return that
3262 * - Otherwise it returns NULL
3264 * During/after the handshake (TLSv1.2 or below resumption occurred):
3265 * - If the session from the original handshake had a servername accepted
3266 * by the server then it will return that servername.
3267 * - Otherwise it returns the servername set via
3268 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3270 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3271 * - It will return the servername set via SSL_set_tlsext_host_name()
3272 * (or NULL if it was not called).
3274 if (SSL_in_before(s)) {
3275 if (sc->ext.hostname == NULL
3276 && sc->session != NULL
3277 && sc->session->ssl_version != TLS1_3_VERSION)
3278 return sc->session->ext.hostname;
3280 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3281 && sc->session->ext.hostname != NULL)
3282 return sc->session->ext.hostname;
3286 return sc->ext.hostname;
3289 int SSL_get_servername_type(const SSL *s)
3291 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3292 return TLSEXT_NAMETYPE_host_name;
3297 * SSL_select_next_proto implements the standard protocol selection. It is
3298 * expected that this function is called from the callback set by
3299 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3300 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3301 * not included in the length. A byte string of length 0 is invalid. No byte
3302 * string may be truncated. The current, but experimental algorithm for
3303 * selecting the protocol is: 1) If the server doesn't support NPN then this
3304 * is indicated to the callback. In this case, the client application has to
3305 * abort the connection or have a default application level protocol. 2) If
3306 * the server supports NPN, but advertises an empty list then the client
3307 * selects the first protocol in its list, but indicates via the API that this
3308 * fallback case was enacted. 3) Otherwise, the client finds the first
3309 * protocol in the server's list that it supports and selects this protocol.
3310 * This is because it's assumed that the server has better information about
3311 * which protocol a client should use. 4) If the client doesn't support any
3312 * of the server's advertised protocols, then this is treated the same as
3313 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3314 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3316 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3317 const unsigned char *server,
3318 unsigned int server_len,
3319 const unsigned char *client, unsigned int client_len)
3322 const unsigned char *result;
3323 int status = OPENSSL_NPN_UNSUPPORTED;
3326 * For each protocol in server preference order, see if we support it.
3328 for (i = 0; i < server_len;) {
3329 for (j = 0; j < client_len;) {
3330 if (server[i] == client[j] &&
3331 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3332 /* We found a match */
3333 result = &server[i];
3334 status = OPENSSL_NPN_NEGOTIATED;
3344 /* There's no overlap between our protocols and the server's list. */
3346 status = OPENSSL_NPN_NO_OVERLAP;
3349 *out = (unsigned char *)result + 1;
3350 *outlen = result[0];
3354 #ifndef OPENSSL_NO_NEXTPROTONEG
3356 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3357 * client's requested protocol for this connection and returns 0. If the
3358 * client didn't request any protocol, then *data is set to NULL. Note that
3359 * the client can request any protocol it chooses. The value returned from
3360 * this function need not be a member of the list of supported protocols
3361 * provided by the callback.
3363 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3366 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3369 /* We have no other way to indicate error */
3375 *data = sc->ext.npn;
3376 if (*data == NULL) {
3379 *len = (unsigned int)sc->ext.npn_len;
3384 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3385 * a TLS server needs a list of supported protocols for Next Protocol
3386 * Negotiation. The returned list must be in wire format. The list is
3387 * returned by setting |out| to point to it and |outlen| to its length. This
3388 * memory will not be modified, but one should assume that the SSL* keeps a
3389 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3390 * wishes to advertise. Otherwise, no such extension will be included in the
3393 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3394 SSL_CTX_npn_advertised_cb_func cb,
3397 ctx->ext.npn_advertised_cb = cb;
3398 ctx->ext.npn_advertised_cb_arg = arg;
3402 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3403 * client needs to select a protocol from the server's provided list. |out|
3404 * must be set to point to the selected protocol (which may be within |in|).
3405 * The length of the protocol name must be written into |outlen|. The
3406 * server's advertised protocols are provided in |in| and |inlen|. The
3407 * callback can assume that |in| is syntactically valid. The client must
3408 * select a protocol. It is fatal to the connection if this callback returns
3409 * a value other than SSL_TLSEXT_ERR_OK.
3411 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3412 SSL_CTX_npn_select_cb_func cb,
3415 ctx->ext.npn_select_cb = cb;
3416 ctx->ext.npn_select_cb_arg = arg;
3420 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3424 if (protos_len < 2 || protos == NULL)
3427 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3428 if (protos[idx] == 0)
3431 return idx == protos_len;
3434 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3435 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3436 * length-prefixed strings). Returns 0 on success.
3438 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3439 unsigned int protos_len)
3441 unsigned char *alpn;
3443 if (protos_len == 0 || protos == NULL) {
3444 OPENSSL_free(ctx->ext.alpn);
3445 ctx->ext.alpn = NULL;
3446 ctx->ext.alpn_len = 0;
3449 /* Not valid per RFC */
3450 if (!alpn_value_ok(protos, protos_len))
3453 alpn = OPENSSL_memdup(protos, protos_len);
3455 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3458 OPENSSL_free(ctx->ext.alpn);
3459 ctx->ext.alpn = alpn;
3460 ctx->ext.alpn_len = protos_len;
3466 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3467 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3468 * length-prefixed strings). Returns 0 on success.
3470 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3471 unsigned int protos_len)
3473 unsigned char *alpn;
3474 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3479 if (protos_len == 0 || protos == NULL) {
3480 OPENSSL_free(sc->ext.alpn);
3481 sc->ext.alpn = NULL;
3482 sc->ext.alpn_len = 0;
3485 /* Not valid per RFC */
3486 if (!alpn_value_ok(protos, protos_len))
3489 alpn = OPENSSL_memdup(protos, protos_len);
3491 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3494 OPENSSL_free(sc->ext.alpn);
3495 sc->ext.alpn = alpn;
3496 sc->ext.alpn_len = protos_len;
3502 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3503 * called during ClientHello processing in order to select an ALPN protocol
3504 * from the client's list of offered protocols.
3506 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3507 SSL_CTX_alpn_select_cb_func cb,
3510 ctx->ext.alpn_select_cb = cb;
3511 ctx->ext.alpn_select_cb_arg = arg;
3515 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3516 * On return it sets |*data| to point to |*len| bytes of protocol name
3517 * (not including the leading length-prefix byte). If the server didn't
3518 * respond with a negotiated protocol then |*len| will be zero.
3520 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3523 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3526 /* We have no other way to indicate error */
3532 *data = sc->s3.alpn_selected;
3536 *len = (unsigned int)sc->s3.alpn_selected_len;
3539 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3540 const char *label, size_t llen,
3541 const unsigned char *context, size_t contextlen,
3544 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3549 if (sc->session == NULL
3550 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3553 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3555 contextlen, use_context);
3558 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3559 const char *label, size_t llen,
3560 const unsigned char *context,
3563 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3568 if (sc->version != TLS1_3_VERSION)
3571 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3572 context, contextlen);
3575 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3577 const unsigned char *session_id = a->session_id;
3579 unsigned char tmp_storage[4];
3581 if (a->session_id_length < sizeof(tmp_storage)) {
3582 memset(tmp_storage, 0, sizeof(tmp_storage));
3583 memcpy(tmp_storage, a->session_id, a->session_id_length);
3584 session_id = tmp_storage;
3588 ((unsigned long)session_id[0]) |
3589 ((unsigned long)session_id[1] << 8L) |
3590 ((unsigned long)session_id[2] << 16L) |
3591 ((unsigned long)session_id[3] << 24L);
3596 * NB: If this function (or indeed the hash function which uses a sort of
3597 * coarser function than this one) is changed, ensure
3598 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3599 * being able to construct an SSL_SESSION that will collide with any existing
3600 * session with a matching session ID.
3602 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3604 if (a->ssl_version != b->ssl_version)
3606 if (a->session_id_length != b->session_id_length)
3608 return memcmp(a->session_id, b->session_id, a->session_id_length);
3612 * These wrapper functions should remain rather than redeclaring
3613 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3614 * variable. The reason is that the functions aren't static, they're exposed
3618 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3619 const SSL_METHOD *meth)
3621 SSL_CTX *ret = NULL;
3624 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3628 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3631 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3632 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3635 ret = OPENSSL_zalloc(sizeof(*ret));
3639 /* Init the reference counting before any call to SSL_CTX_free */
3640 ret->references = 1;
3641 ret->lock = CRYPTO_THREAD_lock_new();
3642 if (ret->lock == NULL) {
3643 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3648 #ifdef TSAN_REQUIRES_LOCKING
3649 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3650 if (ret->tsan_lock == NULL) {
3651 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3656 ret->libctx = libctx;
3657 if (propq != NULL) {
3658 ret->propq = OPENSSL_strdup(propq);
3659 if (ret->propq == NULL)
3664 ret->min_proto_version = 0;
3665 ret->max_proto_version = 0;
3666 ret->mode = SSL_MODE_AUTO_RETRY;
3667 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3668 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3669 /* We take the system default. */
3670 ret->session_timeout = meth->get_timeout();
3671 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3672 ret->verify_mode = SSL_VERIFY_NONE;
3673 if ((ret->cert = ssl_cert_new()) == NULL)
3676 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3677 if (ret->sessions == NULL)
3679 ret->cert_store = X509_STORE_new();
3680 if (ret->cert_store == NULL)
3682 #ifndef OPENSSL_NO_CT
3683 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3684 if (ret->ctlog_store == NULL)
3688 /* initialize cipher/digest methods table */
3689 if (!ssl_load_ciphers(ret))
3691 /* initialise sig algs */
3692 if (!ssl_setup_sig_algs(ret))
3696 if (!ssl_load_groups(ret))
3699 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3702 if (!ssl_create_cipher_list(ret,
3703 ret->tls13_ciphersuites,
3704 &ret->cipher_list, &ret->cipher_list_by_id,
3705 OSSL_default_cipher_list(), ret->cert)
3706 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3707 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3711 ret->param = X509_VERIFY_PARAM_new();
3712 if (ret->param == NULL)
3716 * If these aren't available from the provider we'll get NULL returns.
3717 * That's fine but will cause errors later if SSLv3 is negotiated
3719 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3720 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3722 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3725 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3728 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3731 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3734 /* No compression for DTLS */
3735 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3736 ret->comp_methods = SSL_COMP_get_compression_methods();
3738 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3739 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3741 /* Setup RFC5077 ticket keys */
3742 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3743 sizeof(ret->ext.tick_key_name), 0) <= 0)
3744 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3745 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3746 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3747 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3748 ret->options |= SSL_OP_NO_TICKET;
3750 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3751 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3754 #ifndef OPENSSL_NO_SRP
3755 if (!ssl_ctx_srp_ctx_init_intern(ret))
3758 #ifndef OPENSSL_NO_ENGINE
3759 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3760 # define eng_strx(x) #x
3761 # define eng_str(x) eng_strx(x)
3762 /* Use specific client engine automatically... ignore errors */
3765 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3768 ENGINE_load_builtin_engines();
3769 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3771 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3777 * Disable compression by default to prevent CRIME. Applications can
3778 * re-enable compression by configuring
3779 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3780 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3781 * middlebox compatibility by default. This may be disabled by default in
3782 * a later OpenSSL version.
3784 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3786 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3789 * We cannot usefully set a default max_early_data here (which gets
3790 * propagated in SSL_new(), for the following reason: setting the
3791 * SSL field causes tls_construct_stoc_early_data() to tell the
3792 * client that early data will be accepted when constructing a TLS 1.3
3793 * session ticket, and the client will accordingly send us early data
3794 * when using that ticket (if the client has early data to send).
3795 * However, in order for the early data to actually be consumed by
3796 * the application, the application must also have calls to
3797 * SSL_read_early_data(); otherwise we'll just skip past the early data
3798 * and ignore it. So, since the application must add calls to
3799 * SSL_read_early_data(), we also require them to add
3800 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3801 * eliminating the bandwidth-wasting early data in the case described
3804 ret->max_early_data = 0;
3807 * Default recv_max_early_data is a fully loaded single record. Could be
3808 * split across multiple records in practice. We set this differently to
3809 * max_early_data so that, in the default case, we do not advertise any
3810 * support for early_data, but if a client were to send us some (e.g.
3811 * because of an old, stale ticket) then we will tolerate it and skip over
3814 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3816 /* By default we send two session tickets automatically in TLSv1.3 */
3817 ret->num_tickets = 2;
3819 ssl_ctx_system_config(ret);
3823 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3829 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3831 return SSL_CTX_new_ex(NULL, NULL, meth);
3834 int SSL_CTX_up_ref(SSL_CTX *ctx)
3838 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3841 REF_PRINT_COUNT("SSL_CTX", ctx);
3842 REF_ASSERT_ISNT(i < 2);
3843 return ((i > 1) ? 1 : 0);
3846 void SSL_CTX_free(SSL_CTX *a)
3854 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3855 REF_PRINT_COUNT("SSL_CTX", a);
3858 REF_ASSERT_ISNT(i < 0);
3860 X509_VERIFY_PARAM_free(a->param);
3861 dane_ctx_final(&a->dane);
3864 * Free internal session cache. However: the remove_cb() may reference
3865 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3866 * after the sessions were flushed.
3867 * As the ex_data handling routines might also touch the session cache,
3868 * the most secure solution seems to be: empty (flush) the cache, then
3869 * free ex_data, then finally free the cache.
3870 * (See ticket [openssl.org #212].)
3872 if (a->sessions != NULL)
3873 SSL_CTX_flush_sessions(a, 0);
3875 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3876 lh_SSL_SESSION_free(a->sessions);
3877 X509_STORE_free(a->cert_store);
3878 #ifndef OPENSSL_NO_CT
3879 CTLOG_STORE_free(a->ctlog_store);
3881 sk_SSL_CIPHER_free(a->cipher_list);
3882 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3883 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3884 ssl_cert_free(a->cert);
3885 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3886 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3887 OSSL_STACK_OF_X509_free(a->extra_certs);
3888 a->comp_methods = NULL;
3889 #ifndef OPENSSL_NO_SRTP
3890 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3892 #ifndef OPENSSL_NO_SRP
3893 ssl_ctx_srp_ctx_free_intern(a);
3895 #ifndef OPENSSL_NO_ENGINE
3896 tls_engine_finish(a->client_cert_engine);
3899 OPENSSL_free(a->ext.ecpointformats);
3900 OPENSSL_free(a->ext.supportedgroups);
3901 OPENSSL_free(a->ext.supported_groups_default);
3902 OPENSSL_free(a->ext.alpn);
3903 OPENSSL_secure_free(a->ext.secure);
3905 ssl_evp_md_free(a->md5);
3906 ssl_evp_md_free(a->sha1);
3908 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3909 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3910 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3911 ssl_evp_md_free(a->ssl_digest_methods[j]);
3912 for (j = 0; j < a->group_list_len; j++) {
3913 OPENSSL_free(a->group_list[j].tlsname);
3914 OPENSSL_free(a->group_list[j].realname);
3915 OPENSSL_free(a->group_list[j].algorithm);
3917 OPENSSL_free(a->group_list);
3919 OPENSSL_free(a->sigalg_lookup_cache);
3921 CRYPTO_THREAD_lock_free(a->lock);
3922 #ifdef TSAN_REQUIRES_LOCKING
3923 CRYPTO_THREAD_lock_free(a->tsan_lock);
3926 OPENSSL_free(a->propq);
3931 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3933 ctx->default_passwd_callback = cb;
3936 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3938 ctx->default_passwd_callback_userdata = u;
3941 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3943 return ctx->default_passwd_callback;
3946 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3948 return ctx->default_passwd_callback_userdata;
3951 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3953 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3958 sc->default_passwd_callback = cb;
3961 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3963 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3968 sc->default_passwd_callback_userdata = u;
3971 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3973 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3978 return sc->default_passwd_callback;
3981 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3983 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3988 return sc->default_passwd_callback_userdata;
3991 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3992 int (*cb) (X509_STORE_CTX *, void *),
3995 ctx->app_verify_callback = cb;
3996 ctx->app_verify_arg = arg;
3999 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4000 int (*cb) (int, X509_STORE_CTX *))
4002 ctx->verify_mode = mode;
4003 ctx->default_verify_callback = cb;
4006 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4008 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4011 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4013 ssl_cert_set_cert_cb(c->cert, cb, arg);
4016 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4018 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4023 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4026 void ssl_set_masks(SSL_CONNECTION *s)
4029 uint32_t *pvalid = s->s3.tmp.valid_flags;
4030 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4031 unsigned long mask_k, mask_a;
4032 int have_ecc_cert, ecdsa_ok;
4037 dh_tmp = (c->dh_tmp != NULL
4038 || c->dh_tmp_cb != NULL
4041 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4042 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4043 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4044 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4048 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4049 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4051 #ifndef OPENSSL_NO_GOST
4052 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4053 mask_k |= SSL_kGOST | SSL_kGOST18;
4054 mask_a |= SSL_aGOST12;
4056 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4057 mask_k |= SSL_kGOST | SSL_kGOST18;
4058 mask_a |= SSL_aGOST12;
4060 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4061 mask_k |= SSL_kGOST;
4062 mask_a |= SSL_aGOST01;
4073 * If we only have an RSA-PSS certificate allow RSA authentication
4074 * if TLS 1.2 and peer supports it.
4077 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4078 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4079 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4086 mask_a |= SSL_aNULL;
4089 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4090 * depending on the key usage extension.
4092 if (have_ecc_cert) {
4094 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4095 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4096 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4099 mask_a |= SSL_aECDSA;
4101 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4102 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4103 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4104 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4105 mask_a |= SSL_aECDSA;
4107 /* Allow Ed448 for TLS 1.2 if peer supports it */
4108 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4109 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4110 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4111 mask_a |= SSL_aECDSA;
4113 mask_k |= SSL_kECDHE;
4115 #ifndef OPENSSL_NO_PSK
4118 if (mask_k & SSL_kRSA)
4119 mask_k |= SSL_kRSAPSK;
4120 if (mask_k & SSL_kDHE)
4121 mask_k |= SSL_kDHEPSK;
4122 if (mask_k & SSL_kECDHE)
4123 mask_k |= SSL_kECDHEPSK;
4126 s->s3.tmp.mask_k = mask_k;
4127 s->s3.tmp.mask_a = mask_a;
4130 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4132 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4133 /* key usage, if present, must allow signing */
4134 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4135 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4139 return 1; /* all checks are ok */
4142 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4143 const unsigned char **serverinfo,
4144 size_t *serverinfo_length)
4146 CERT_PKEY *cpk = s->s3.tmp.cert;
4147 *serverinfo_length = 0;
4149 if (cpk == NULL || cpk->serverinfo == NULL)
4152 *serverinfo = cpk->serverinfo;
4153 *serverinfo_length = cpk->serverinfo_length;
4157 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4162 * If the session_id_length is 0, we are not supposed to cache it, and it
4163 * would be rather hard to do anyway :-)
4165 if (s->session->session_id_length == 0)
4169 * If sid_ctx_length is 0 there is no specific application context
4170 * associated with this session, so when we try to resume it and
4171 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4172 * indication that this is actually a session for the proper application
4173 * context, and the *handshake* will fail, not just the resumption attempt.
4174 * Do not cache (on the server) these sessions that are not resumable
4175 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4177 if (s->server && s->session->sid_ctx_length == 0
4178 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4181 i = s->session_ctx->session_cache_mode;
4183 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4185 * Add the session to the internal cache. In server side TLSv1.3 we
4186 * normally don't do this because by default it's a full stateless ticket
4187 * with only a dummy session id so there is no reason to cache it,
4189 * - we are doing early_data, in which case we cache so that we can
4191 * - the application has set a remove_session_cb so needs to know about
4192 * session timeout events
4193 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4195 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4196 && (!SSL_CONNECTION_IS_TLS13(s)
4198 || (s->max_early_data > 0
4199 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4200 || s->session_ctx->remove_session_cb != NULL
4201 || (s->options & SSL_OP_NO_TICKET) != 0))
4202 SSL_CTX_add_session(s->session_ctx, s->session);
4205 * Add the session to the external cache. We do this even in server side
4206 * TLSv1.3 without early data because some applications just want to
4207 * know about the creation of a session and aren't doing a full cache.
4209 if (s->session_ctx->new_session_cb != NULL) {
4210 SSL_SESSION_up_ref(s->session);
4211 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4213 SSL_SESSION_free(s->session);
4217 /* auto flush every 255 connections */
4218 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4219 TSAN_QUALIFIER int *stat;
4221 if (mode & SSL_SESS_CACHE_CLIENT)
4222 stat = &s->session_ctx->stats.sess_connect_good;
4224 stat = &s->session_ctx->stats.sess_accept_good;
4225 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4226 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4230 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4235 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4240 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4243 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4245 /* TODO(QUIC): Do we want this for QUIC? */
4247 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4250 if (s->method != meth) {
4251 const SSL_METHOD *sm = s->method;
4252 int (*hf) (SSL *) = sc->handshake_func;
4254 if (sm->version == meth->version)
4259 ret = s->method->ssl_init(s);
4262 if (hf == sm->ssl_connect)
4263 sc->handshake_func = meth->ssl_connect;
4264 else if (hf == sm->ssl_accept)
4265 sc->handshake_func = meth->ssl_accept;
4270 int SSL_get_error(const SSL *s, int i)
4275 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4278 return SSL_ERROR_NONE;
4280 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4282 return SSL_ERROR_SSL;
4285 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4286 * where we do encode the error
4288 if ((l = ERR_peek_error()) != 0) {
4289 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4290 return SSL_ERROR_SYSCALL;
4292 return SSL_ERROR_SSL;
4295 if (SSL_want_read(s)) {
4296 bio = SSL_get_rbio(s);
4297 if (BIO_should_read(bio))
4298 return SSL_ERROR_WANT_READ;
4299 else if (BIO_should_write(bio))
4301 * This one doesn't make too much sense ... We never try to write
4302 * to the rbio, and an application program where rbio and wbio
4303 * are separate couldn't even know what it should wait for.
4304 * However if we ever set s->rwstate incorrectly (so that we have
4305 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4306 * wbio *are* the same, this test works around that bug; so it
4307 * might be safer to keep it.
4309 return SSL_ERROR_WANT_WRITE;
4310 else if (BIO_should_io_special(bio)) {
4311 reason = BIO_get_retry_reason(bio);
4312 if (reason == BIO_RR_CONNECT)
4313 return SSL_ERROR_WANT_CONNECT;
4314 else if (reason == BIO_RR_ACCEPT)
4315 return SSL_ERROR_WANT_ACCEPT;
4317 return SSL_ERROR_SYSCALL; /* unknown */
4321 if (SSL_want_write(s)) {
4322 /* Access wbio directly - in order to use the buffered bio if present */
4324 if (BIO_should_write(bio))
4325 return SSL_ERROR_WANT_WRITE;
4326 else if (BIO_should_read(bio))
4328 * See above (SSL_want_read(s) with BIO_should_write(bio))
4330 return SSL_ERROR_WANT_READ;
4331 else if (BIO_should_io_special(bio)) {
4332 reason = BIO_get_retry_reason(bio);
4333 if (reason == BIO_RR_CONNECT)
4334 return SSL_ERROR_WANT_CONNECT;
4335 else if (reason == BIO_RR_ACCEPT)
4336 return SSL_ERROR_WANT_ACCEPT;
4338 return SSL_ERROR_SYSCALL;
4341 if (SSL_want_x509_lookup(s))
4342 return SSL_ERROR_WANT_X509_LOOKUP;
4343 if (SSL_want_retry_verify(s))
4344 return SSL_ERROR_WANT_RETRY_VERIFY;
4345 if (SSL_want_async(s))
4346 return SSL_ERROR_WANT_ASYNC;
4347 if (SSL_want_async_job(s))
4348 return SSL_ERROR_WANT_ASYNC_JOB;
4349 if (SSL_want_client_hello_cb(s))
4350 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4352 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4353 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4354 return SSL_ERROR_ZERO_RETURN;
4356 return SSL_ERROR_SYSCALL;
4359 static int ssl_do_handshake_intern(void *vargs)
4361 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4363 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4368 return sc->handshake_func(s);
4371 int SSL_do_handshake(SSL *s)
4374 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4376 /* TODO(QUIC): Special handling for QUIC will be needed */
4380 if (sc->handshake_func == NULL) {
4381 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4385 ossl_statem_check_finish_init(sc, -1);
4387 s->method->ssl_renegotiate_check(s, 0);
4389 if (SSL_in_init(s) || SSL_in_before(s)) {
4390 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4391 struct ssl_async_args args;
4393 memset(&args, 0, sizeof(args));
4396 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4398 ret = sc->handshake_func(s);
4404 void SSL_set_accept_state(SSL *s)
4406 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4408 /* TODO(QUIC): Special handling for QUIC will be needed */
4414 ossl_statem_clear(sc);
4415 sc->handshake_func = s->method->ssl_accept;
4419 void SSL_set_connect_state(SSL *s)
4421 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4423 /* TODO(QUIC): Special handling for QUIC will be needed */
4429 ossl_statem_clear(sc);
4430 sc->handshake_func = s->method->ssl_connect;
4434 int ssl_undefined_function(SSL *s)
4436 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4440 int ssl_undefined_void_function(void)
4442 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4446 int ssl_undefined_const_function(const SSL *s)
4451 const SSL_METHOD *ssl_bad_method(int ver)
4453 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4457 const char *ssl_protocol_to_string(int version)
4461 case TLS1_3_VERSION:
4464 case TLS1_2_VERSION:
4467 case TLS1_1_VERSION:
4482 case DTLS1_2_VERSION:
4490 const char *SSL_get_version(const SSL *s)
4492 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4494 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4498 return ssl_protocol_to_string(sc->version);
4501 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4503 STACK_OF(X509_NAME) *sk;
4512 if ((sk = sk_X509_NAME_new_null()) == NULL)
4514 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4515 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4517 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4520 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4522 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4531 SSL *SSL_dup(SSL *s)
4535 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4536 SSL_CONNECTION *retsc;
4537 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4542 /* If we're not quiescent, just up_ref! */
4543 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4544 CRYPTO_UP_REF(&s->references, &i, s->lock);
4549 * Otherwise, copy configuration state, and session if set.
4551 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4553 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4556 if (sc->session != NULL) {
4558 * Arranges to share the same session via up_ref. This "copies"
4559 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4561 if (!SSL_copy_session_id(ret, s))
4565 * No session has been established yet, so we have to expect that
4566 * s->cert or ret->cert will be changed later -- they should not both
4567 * point to the same object, and thus we can't use
4568 * SSL_copy_session_id.
4570 if (!SSL_set_ssl_method(ret, s->method))
4573 if (sc->cert != NULL) {
4574 ssl_cert_free(retsc->cert);
4575 retsc->cert = ssl_cert_dup(sc->cert);
4576 if (retsc->cert == NULL)
4580 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4581 (int)sc->sid_ctx_length))
4585 if (!ssl_dane_dup(retsc, sc))
4587 retsc->version = sc->version;
4588 retsc->options = sc->options;
4589 retsc->min_proto_version = sc->min_proto_version;
4590 retsc->max_proto_version = sc->max_proto_version;
4591 retsc->mode = sc->mode;
4592 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4593 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4594 retsc->msg_callback = sc->msg_callback;
4595 retsc->msg_callback_arg = sc->msg_callback_arg;
4596 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4597 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4598 retsc->generate_session_id = sc->generate_session_id;
4600 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4602 /* copy app data, a little dangerous perhaps */
4603 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4606 retsc->server = sc->server;
4607 if (sc->handshake_func) {
4609 SSL_set_accept_state(ret);
4611 SSL_set_connect_state(ret);
4613 retsc->shutdown = sc->shutdown;
4614 retsc->hit = sc->hit;
4616 retsc->default_passwd_callback = sc->default_passwd_callback;
4617 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4619 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4621 /* dup the cipher_list and cipher_list_by_id stacks */
4622 if (sc->cipher_list != NULL) {
4623 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4626 if (sc->cipher_list_by_id != NULL)
4627 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4631 /* Dup the client_CA list */
4632 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4633 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4643 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4645 if (s->enc_read_ctx != NULL) {
4646 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4647 s->enc_read_ctx = NULL;
4649 if (s->enc_write_ctx != NULL) {
4650 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4651 s->enc_write_ctx = NULL;
4653 #ifndef OPENSSL_NO_COMP
4654 COMP_CTX_free(s->expand);
4656 COMP_CTX_free(s->compress);
4661 X509 *SSL_get_certificate(const SSL *s)
4663 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4668 if (sc->cert != NULL)
4669 return sc->cert->key->x509;
4674 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4681 if (sc->cert != NULL)
4682 return sc->cert->key->privatekey;
4687 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4689 if (ctx->cert != NULL)
4690 return ctx->cert->key->x509;
4695 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4697 if (ctx->cert != NULL)
4698 return ctx->cert->key->privatekey;
4703 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4705 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4710 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4711 return sc->session->cipher;
4715 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4717 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4722 return sc->s3.tmp.new_cipher;
4725 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4727 #ifndef OPENSSL_NO_COMP
4728 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4733 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4739 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4741 #ifndef OPENSSL_NO_COMP
4742 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4747 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4753 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4757 if (s->bbio != NULL) {
4758 /* Already buffered. */
4762 bbio = BIO_new(BIO_f_buffer());
4763 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4765 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4769 s->wbio = BIO_push(bbio, s->wbio);
4774 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4776 /* callers ensure s is never null */
4777 if (s->bbio == NULL)
4780 s->wbio = BIO_pop(s->wbio);
4787 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4789 ctx->quiet_shutdown = mode;
4792 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4794 return ctx->quiet_shutdown;
4797 void SSL_set_quiet_shutdown(SSL *s, int mode)
4799 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4801 /* TODO(QUIC): Do we want this for QUIC? */
4805 sc->quiet_shutdown = mode;
4808 int SSL_get_quiet_shutdown(const SSL *s)
4810 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4812 /* TODO(QUIC): Do we want this for QUIC? */
4816 return sc->quiet_shutdown;
4819 void SSL_set_shutdown(SSL *s, int mode)
4821 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4823 /* TODO(QUIC): Do we want this for QUIC? */
4827 sc->shutdown = mode;
4830 int SSL_get_shutdown(const SSL *s)
4832 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4834 /* TODO(QUIC): Do we want this for QUIC? */
4838 return sc->shutdown;
4841 int SSL_version(const SSL *s)
4843 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4845 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4852 int SSL_client_version(const SSL *s)
4854 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4856 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4860 return sc->client_version;
4863 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4868 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4871 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4873 /* TODO(QUIC): Do we need this for QUIC support? */
4877 if (ssl->ctx == ctx)
4880 ctx = sc->session_ctx;
4881 new_cert = ssl_cert_dup(ctx->cert);
4882 if (new_cert == NULL) {
4886 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4887 ssl_cert_free(new_cert);
4891 ssl_cert_free(sc->cert);
4892 sc->cert = new_cert;
4895 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4896 * so setter APIs must prevent invalid lengths from entering the system.
4898 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4902 * If the session ID context matches that of the parent SSL_CTX,
4903 * inherit it from the new SSL_CTX as well. If however the context does
4904 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4905 * leave it unchanged.
4907 if ((ssl->ctx != NULL) &&
4908 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4909 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4910 sc->sid_ctx_length = ctx->sid_ctx_length;
4911 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4914 SSL_CTX_up_ref(ctx);
4915 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4921 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4923 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4927 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4929 X509_LOOKUP *lookup;
4931 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4935 /* We ignore errors, in case the directory doesn't exist */
4938 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4945 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4947 X509_LOOKUP *lookup;
4949 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4953 /* We ignore errors, in case the file doesn't exist */
4956 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4964 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4966 X509_LOOKUP *lookup;
4968 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4972 /* We ignore errors, in case the directory doesn't exist */
4975 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4982 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4984 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
4988 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4990 return X509_STORE_load_path(ctx->cert_store, CApath);
4993 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4995 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
4999 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5002 if (CAfile == NULL && CApath == NULL)
5004 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5006 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5011 void SSL_set_info_callback(SSL *ssl,
5012 void (*cb) (const SSL *ssl, int type, int val))
5014 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5019 sc->info_callback = cb;
5023 * One compiler (Diab DCC) doesn't like argument names in returned function
5026 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5029 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5034 return sc->info_callback;
5037 void SSL_set_verify_result(SSL *ssl, long arg)
5039 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5044 sc->verify_result = arg;
5047 long SSL_get_verify_result(const SSL *ssl)
5049 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5054 return sc->verify_result;
5057 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5059 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5065 return sizeof(sc->s3.client_random);
5066 if (outlen > sizeof(sc->s3.client_random))
5067 outlen = sizeof(sc->s3.client_random);
5068 memcpy(out, sc->s3.client_random, outlen);
5072 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5074 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5080 return sizeof(sc->s3.server_random);
5081 if (outlen > sizeof(sc->s3.server_random))
5082 outlen = sizeof(sc->s3.server_random);
5083 memcpy(out, sc->s3.server_random, outlen);
5087 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5088 unsigned char *out, size_t outlen)
5091 return session->master_key_length;
5092 if (outlen > session->master_key_length)
5093 outlen = session->master_key_length;
5094 memcpy(out, session->master_key, outlen);
5098 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5101 if (len > sizeof(sess->master_key))
5104 memcpy(sess->master_key, in, len);
5105 sess->master_key_length = len;
5110 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5112 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5115 void *SSL_get_ex_data(const SSL *s, int idx)
5117 return CRYPTO_get_ex_data(&s->ex_data, idx);
5120 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5122 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5125 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5127 return CRYPTO_get_ex_data(&s->ex_data, idx);
5130 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5132 return ctx->cert_store;
5135 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5137 X509_STORE_free(ctx->cert_store);
5138 ctx->cert_store = store;
5141 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5144 X509_STORE_up_ref(store);
5145 SSL_CTX_set_cert_store(ctx, store);
5148 int SSL_want(const SSL *s)
5150 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5158 #ifndef OPENSSL_NO_PSK
5159 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5161 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5162 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5165 OPENSSL_free(ctx->cert->psk_identity_hint);
5166 if (identity_hint != NULL) {
5167 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5168 if (ctx->cert->psk_identity_hint == NULL)
5171 ctx->cert->psk_identity_hint = NULL;
5175 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5177 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5182 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5183 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5186 OPENSSL_free(sc->cert->psk_identity_hint);
5187 if (identity_hint != NULL) {
5188 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5189 if (sc->cert->psk_identity_hint == NULL)
5192 sc->cert->psk_identity_hint = NULL;
5196 const char *SSL_get_psk_identity_hint(const SSL *s)
5198 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5200 if (sc == NULL || sc->session == NULL)
5203 return sc->session->psk_identity_hint;
5206 const char *SSL_get_psk_identity(const SSL *s)
5208 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5210 if (sc == NULL || sc->session == NULL)
5213 return sc->session->psk_identity;
5216 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5218 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5223 sc->psk_client_callback = cb;
5226 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5228 ctx->psk_client_callback = cb;
5231 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5233 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5238 sc->psk_server_callback = cb;
5241 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5243 ctx->psk_server_callback = cb;
5247 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5249 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5254 sc->psk_find_session_cb = cb;
5257 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5258 SSL_psk_find_session_cb_func cb)
5260 ctx->psk_find_session_cb = cb;
5263 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5265 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5270 sc->psk_use_session_cb = cb;
5273 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5274 SSL_psk_use_session_cb_func cb)
5276 ctx->psk_use_session_cb = cb;
5279 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5280 void (*cb) (int write_p, int version,
5281 int content_type, const void *buf,
5282 size_t len, SSL *ssl, void *arg))
5284 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5287 void SSL_set_msg_callback(SSL *ssl,
5288 void (*cb) (int write_p, int version,
5289 int content_type, const void *buf,
5290 size_t len, SSL *ssl, void *arg))
5292 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5295 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5296 int (*cb) (SSL *ssl,
5300 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5301 (void (*)(void))cb);
5304 void SSL_set_not_resumable_session_callback(SSL *ssl,
5305 int (*cb) (SSL *ssl,
5306 int is_forward_secure))
5308 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5309 (void (*)(void))cb);
5312 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5313 size_t (*cb) (SSL *ssl, int type,
5314 size_t len, void *arg))
5316 ctx->record_padding_cb = cb;
5319 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5321 ctx->record_padding_arg = arg;
5324 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5326 return ctx->record_padding_arg;
5329 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5331 /* block size of 0 or 1 is basically no padding */
5332 if (block_size == 1)
5333 ctx->block_padding = 0;
5334 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5335 ctx->block_padding = block_size;
5341 int SSL_set_record_padding_callback(SSL *ssl,
5342 size_t (*cb) (SSL *ssl, int type,
5343 size_t len, void *arg))
5346 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5351 b = SSL_get_wbio(ssl);
5352 if (b == NULL || !BIO_get_ktls_send(b)) {
5353 sc->record_padding_cb = cb;
5359 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5361 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5366 sc->record_padding_arg = arg;
5369 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5371 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5376 return sc->record_padding_arg;
5379 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5381 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5386 /* block size of 0 or 1 is basically no padding */
5387 if (block_size == 1)
5388 sc->block_padding = 0;
5389 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5390 sc->block_padding = block_size;
5396 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5398 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5403 sc->num_tickets = num_tickets;
5408 size_t SSL_get_num_tickets(const SSL *s)
5410 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5415 return sc->num_tickets;
5418 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5420 ctx->num_tickets = num_tickets;
5425 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5427 return ctx->num_tickets;
5431 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5432 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5433 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5434 * Returns the newly allocated ctx;
5437 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5439 ssl_clear_hash_ctx(hash);
5440 *hash = EVP_MD_CTX_new();
5441 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5442 EVP_MD_CTX_free(*hash);
5449 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5452 EVP_MD_CTX_free(*hash);
5456 /* Retrieve handshake hashes */
5457 int ssl_handshake_hash(SSL_CONNECTION *s,
5458 unsigned char *out, size_t outlen,
5461 EVP_MD_CTX *ctx = NULL;
5462 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5463 int hashleni = EVP_MD_CTX_get_size(hdgst);
5466 if (hashleni < 0 || (size_t)hashleni > outlen) {
5467 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5471 ctx = EVP_MD_CTX_new();
5473 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5477 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5478 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5479 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5483 *hashlen = hashleni;
5487 EVP_MD_CTX_free(ctx);
5491 int SSL_session_reused(const SSL *s)
5493 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5501 int SSL_is_server(const SSL *s)
5503 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5511 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5512 void SSL_set_debug(SSL *s, int debug)
5514 /* Old function was do-nothing anyway... */
5520 void SSL_set_security_level(SSL *s, int level)
5522 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5527 sc->cert->sec_level = level;
5530 int SSL_get_security_level(const SSL *s)
5532 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5537 return sc->cert->sec_level;
5540 void SSL_set_security_callback(SSL *s,
5541 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5542 int op, int bits, int nid,
5543 void *other, void *ex))
5545 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5550 sc->cert->sec_cb = cb;
5553 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5554 const SSL_CTX *ctx, int op,
5555 int bits, int nid, void *other,
5557 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5562 return sc->cert->sec_cb;
5565 void SSL_set0_security_ex_data(SSL *s, void *ex)
5567 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5572 sc->cert->sec_ex = ex;
5575 void *SSL_get0_security_ex_data(const SSL *s)
5577 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5582 return sc->cert->sec_ex;
5585 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5587 ctx->cert->sec_level = level;
5590 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5592 return ctx->cert->sec_level;
5595 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5596 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5597 int op, int bits, int nid,
5598 void *other, void *ex))
5600 ctx->cert->sec_cb = cb;
5603 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5609 return ctx->cert->sec_cb;
5612 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5614 ctx->cert->sec_ex = ex;
5617 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5619 return ctx->cert->sec_ex;
5622 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5624 return ctx->options;
5627 uint64_t SSL_get_options(const SSL *s)
5629 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5637 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5639 return ctx->options |= op;
5642 uint64_t SSL_set_options(SSL *s, uint64_t op)
5644 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5649 return sc->options |= op;
5652 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5654 return ctx->options &= ~op;
5657 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5659 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5664 return sc->options &= ~op;
5667 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5669 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5674 return sc->verified_chain;
5677 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5679 #ifndef OPENSSL_NO_CT
5682 * Moves SCTs from the |src| stack to the |dst| stack.
5683 * The source of each SCT will be set to |origin|.
5684 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5686 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5688 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5689 sct_source_t origin)
5695 *dst = sk_SCT_new_null();
5697 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5702 while ((sct = sk_SCT_pop(src)) != NULL) {
5703 if (SCT_set_source(sct, origin) != 1)
5706 if (sk_SCT_push(*dst, sct) <= 0)
5714 sk_SCT_push(src, sct); /* Put the SCT back */
5719 * Look for data collected during ServerHello and parse if found.
5720 * Returns the number of SCTs extracted.
5722 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5724 int scts_extracted = 0;
5726 if (s->ext.scts != NULL) {
5727 const unsigned char *p = s->ext.scts;
5728 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5730 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5732 SCT_LIST_free(scts);
5735 return scts_extracted;
5739 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5740 * contains an SCT X509 extension. They will be stored in |s->scts|.
5742 * - The number of SCTs extracted, assuming an OCSP response exists.
5743 * - 0 if no OCSP response exists or it contains no SCTs.
5744 * - A negative integer if an error occurs.
5746 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5748 # ifndef OPENSSL_NO_OCSP
5749 int scts_extracted = 0;
5750 const unsigned char *p;
5751 OCSP_BASICRESP *br = NULL;
5752 OCSP_RESPONSE *rsp = NULL;
5753 STACK_OF(SCT) *scts = NULL;
5756 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5759 p = s->ext.ocsp.resp;
5760 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5764 br = OCSP_response_get1_basic(rsp);
5768 for (i = 0; i < OCSP_resp_count(br); ++i) {
5769 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5775 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5777 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5778 if (scts_extracted < 0)
5782 SCT_LIST_free(scts);
5783 OCSP_BASICRESP_free(br);
5784 OCSP_RESPONSE_free(rsp);
5785 return scts_extracted;
5787 /* Behave as if no OCSP response exists */
5793 * Attempts to extract SCTs from the peer certificate.
5794 * Return the number of SCTs extracted, or a negative integer if an error
5797 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5799 int scts_extracted = 0;
5800 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5803 STACK_OF(SCT) *scts =
5804 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5807 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5809 SCT_LIST_free(scts);
5812 return scts_extracted;
5816 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5817 * response (if it exists) and X509v3 extensions in the certificate.
5818 * Returns NULL if an error occurs.
5820 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5822 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5827 if (!sc->scts_parsed) {
5828 if (ct_extract_tls_extension_scts(sc) < 0 ||
5829 ct_extract_ocsp_response_scts(sc) < 0 ||
5830 ct_extract_x509v3_extension_scts(sc) < 0)
5833 sc->scts_parsed = 1;
5840 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5841 const STACK_OF(SCT) *scts, void *unused_arg)
5846 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5847 const STACK_OF(SCT) *scts, void *unused_arg)
5849 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5852 for (i = 0; i < count; ++i) {
5853 SCT *sct = sk_SCT_value(scts, i);
5854 int status = SCT_get_validation_status(sct);
5856 if (status == SCT_VALIDATION_STATUS_VALID)
5859 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5863 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5866 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5872 * Since code exists that uses the custom extension handler for CT, look
5873 * for this and throw an error if they have already registered to use CT.
5875 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5876 TLSEXT_TYPE_signed_certificate_timestamp))
5878 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5882 if (callback != NULL) {
5884 * If we are validating CT, then we MUST accept SCTs served via OCSP
5886 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5890 sc->ct_validation_callback = callback;
5891 sc->ct_validation_callback_arg = arg;
5896 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5897 ssl_ct_validation_cb callback, void *arg)
5900 * Since code exists that uses the custom extension handler for CT, look for
5901 * this and throw an error if they have already registered to use CT.
5903 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5904 TLSEXT_TYPE_signed_certificate_timestamp))
5906 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5910 ctx->ct_validation_callback = callback;
5911 ctx->ct_validation_callback_arg = arg;
5915 int SSL_ct_is_enabled(const SSL *s)
5917 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5922 return sc->ct_validation_callback != NULL;
5925 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5927 return ctx->ct_validation_callback != NULL;
5930 int ssl_validate_ct(SSL_CONNECTION *s)
5933 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5935 SSL_DANE *dane = &s->dane;
5936 CT_POLICY_EVAL_CTX *ctx = NULL;
5937 const STACK_OF(SCT) *scts;
5940 * If no callback is set, the peer is anonymous, or its chain is invalid,
5941 * skip SCT validation - just return success. Applications that continue
5942 * handshakes without certificates, with unverified chains, or pinned leaf
5943 * certificates are outside the scope of the WebPKI and CT.
5945 * The above exclusions notwithstanding the vast majority of peers will
5946 * have rather ordinary certificate chains validated by typical
5947 * applications that perform certificate verification and therefore will
5948 * process SCTs when enabled.
5950 if (s->ct_validation_callback == NULL || cert == NULL ||
5951 s->verify_result != X509_V_OK ||
5952 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5956 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5957 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5959 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5960 switch (dane->mtlsa->usage) {
5961 case DANETLS_USAGE_DANE_TA:
5962 case DANETLS_USAGE_DANE_EE:
5967 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5968 SSL_CONNECTION_GET_CTX(s)->propq);
5970 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5974 issuer = sk_X509_value(s->verified_chain, 1);
5975 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5976 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5977 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
5978 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
5979 CT_POLICY_EVAL_CTX_set_time(
5980 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
5982 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
5985 * This function returns success (> 0) only when all the SCTs are valid, 0
5986 * when some are invalid, and < 0 on various internal errors (out of
5987 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5988 * reason to abort the handshake, that decision is up to the callback.
5989 * Therefore, we error out only in the unexpected case that the return
5990 * value is negative.
5992 * XXX: One might well argue that the return value of this function is an
5993 * unfortunate design choice. Its job is only to determine the validation
5994 * status of each of the provided SCTs. So long as it correctly separates
5995 * the wheat from the chaff it should return success. Failure in this case
5996 * ought to correspond to an inability to carry out its duties.
5998 if (SCT_LIST_validate(scts, ctx) < 0) {
5999 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6003 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6005 ret = 0; /* This function returns 0 on failure */
6007 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6010 CT_POLICY_EVAL_CTX_free(ctx);
6012 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6013 * failure return code here. Also the application may wish the complete
6014 * the handshake, and then disconnect cleanly at a higher layer, after
6015 * checking the verification status of the completed connection.
6017 * We therefore force a certificate verification failure which will be
6018 * visible via SSL_get_verify_result() and cached as part of any resumed
6021 * Note: the permissive callback is for information gathering only, always
6022 * returns success, and does not affect verification status. Only the
6023 * strict callback or a custom application-specified callback can trigger
6024 * connection failure or record a verification error.
6027 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6031 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6033 switch (validation_mode) {
6035 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6037 case SSL_CT_VALIDATION_PERMISSIVE:
6038 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6039 case SSL_CT_VALIDATION_STRICT:
6040 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6044 int SSL_enable_ct(SSL *s, int validation_mode)
6046 switch (validation_mode) {
6048 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6050 case SSL_CT_VALIDATION_PERMISSIVE:
6051 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6052 case SSL_CT_VALIDATION_STRICT:
6053 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6057 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6059 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6062 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6064 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6067 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6069 CTLOG_STORE_free(ctx->ctlog_store);
6070 ctx->ctlog_store = logs;
6073 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6075 return ctx->ctlog_store;
6078 #endif /* OPENSSL_NO_CT */
6080 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6083 c->client_hello_cb = cb;
6084 c->client_hello_cb_arg = arg;
6087 int SSL_client_hello_isv2(SSL *s)
6089 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6094 if (sc->clienthello == NULL)
6096 return sc->clienthello->isv2;
6099 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6101 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6106 if (sc->clienthello == NULL)
6108 return sc->clienthello->legacy_version;
6111 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6113 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6118 if (sc->clienthello == NULL)
6121 *out = sc->clienthello->random;
6122 return SSL3_RANDOM_SIZE;
6125 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6127 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6132 if (sc->clienthello == NULL)
6135 *out = sc->clienthello->session_id;
6136 return sc->clienthello->session_id_len;
6139 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6141 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6146 if (sc->clienthello == NULL)
6149 *out = PACKET_data(&sc->clienthello->ciphersuites);
6150 return PACKET_remaining(&sc->clienthello->ciphersuites);
6153 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6155 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6160 if (sc->clienthello == NULL)
6163 *out = sc->clienthello->compressions;
6164 return sc->clienthello->compressions_len;
6167 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6172 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6177 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6179 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6180 ext = sc->clienthello->pre_proc_exts + i;
6189 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6190 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6193 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6194 ext = sc->clienthello->pre_proc_exts + i;
6196 if (ext->received_order >= num)
6198 present[ext->received_order] = ext->type;
6205 OPENSSL_free(present);
6209 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6213 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6218 if (sc->clienthello == NULL || num_exts == NULL)
6220 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6221 ext = sc->clienthello->pre_proc_exts + i;
6233 if (*num_exts < num)
6235 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6236 ext = sc->clienthello->pre_proc_exts + i;
6238 if (ext->received_order >= num)
6240 exts[ext->received_order] = ext->type;
6247 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6252 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6257 if (sc->clienthello == NULL)
6259 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6260 r = sc->clienthello->pre_proc_exts + i;
6261 if (r->present && r->type == type) {
6263 *out = PACKET_data(&r->data);
6265 *outlen = PACKET_remaining(&r->data);
6272 int SSL_free_buffers(SSL *ssl)
6275 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6282 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6285 RECORD_LAYER_release(rl);
6289 int SSL_alloc_buffers(SSL *ssl)
6291 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6296 return ssl3_setup_buffers(sc);
6299 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6301 ctx->keylog_callback = cb;
6304 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6306 return ctx->keylog_callback;
6309 static int nss_keylog_int(const char *prefix,
6311 const uint8_t *parameter_1,
6312 size_t parameter_1_len,
6313 const uint8_t *parameter_2,
6314 size_t parameter_2_len)
6317 char *cursor = NULL;
6321 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6323 if (sctx->keylog_callback == NULL)
6327 * Our output buffer will contain the following strings, rendered with
6328 * space characters in between, terminated by a NULL character: first the
6329 * prefix, then the first parameter, then the second parameter. The
6330 * meaning of each parameter depends on the specific key material being
6331 * logged. Note that the first and second parameters are encoded in
6332 * hexadecimal, so we need a buffer that is twice their lengths.
6334 prefix_len = strlen(prefix);
6335 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6336 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6337 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6341 strcpy(cursor, prefix);
6342 cursor += prefix_len;
6345 for (i = 0; i < parameter_1_len; i++) {
6346 sprintf(cursor, "%02x", parameter_1[i]);
6351 for (i = 0; i < parameter_2_len; i++) {
6352 sprintf(cursor, "%02x", parameter_2[i]);
6357 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6358 OPENSSL_clear_free(out, out_len);
6363 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6364 const uint8_t *encrypted_premaster,
6365 size_t encrypted_premaster_len,
6366 const uint8_t *premaster,
6367 size_t premaster_len)
6369 if (encrypted_premaster_len < 8) {
6370 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6374 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6375 return nss_keylog_int("RSA",
6377 encrypted_premaster,
6383 int ssl_log_secret(SSL_CONNECTION *sc,
6385 const uint8_t *secret,
6388 return nss_keylog_int(label,
6390 sc->s3.client_random,
6396 #define SSLV2_CIPHER_LEN 3
6398 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6402 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6404 if (PACKET_remaining(cipher_suites) == 0) {
6405 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6409 if (PACKET_remaining(cipher_suites) % n != 0) {
6410 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6414 OPENSSL_free(s->s3.tmp.ciphers_raw);
6415 s->s3.tmp.ciphers_raw = NULL;
6416 s->s3.tmp.ciphers_rawlen = 0;
6419 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6420 PACKET sslv2ciphers = *cipher_suites;
6421 unsigned int leadbyte;
6425 * We store the raw ciphers list in SSLv3+ format so we need to do some
6426 * preprocessing to convert the list first. If there are any SSLv2 only
6427 * ciphersuites with a non-zero leading byte then we are going to
6428 * slightly over allocate because we won't store those. But that isn't a
6431 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6432 s->s3.tmp.ciphers_raw = raw;
6434 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6437 for (s->s3.tmp.ciphers_rawlen = 0;
6438 PACKET_remaining(&sslv2ciphers) > 0;
6439 raw += TLS_CIPHER_LEN) {
6440 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6442 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6445 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6446 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6447 OPENSSL_free(s->s3.tmp.ciphers_raw);
6448 s->s3.tmp.ciphers_raw = NULL;
6449 s->s3.tmp.ciphers_rawlen = 0;
6453 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6455 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6456 &s->s3.tmp.ciphers_rawlen)) {
6457 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6463 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6464 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6465 STACK_OF(SSL_CIPHER) **scsvs)
6468 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6473 if (!PACKET_buf_init(&pkt, bytes, len))
6475 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6478 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6479 STACK_OF(SSL_CIPHER) **skp,
6480 STACK_OF(SSL_CIPHER) **scsvs_out,
6481 int sslv2format, int fatal)
6483 const SSL_CIPHER *c;
6484 STACK_OF(SSL_CIPHER) *sk = NULL;
6485 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6487 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6488 unsigned char cipher[SSLV2_CIPHER_LEN];
6490 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6492 if (PACKET_remaining(cipher_suites) == 0) {
6494 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6496 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6500 if (PACKET_remaining(cipher_suites) % n != 0) {
6502 SSLfatal(s, SSL_AD_DECODE_ERROR,
6503 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6505 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6509 sk = sk_SSL_CIPHER_new_null();
6510 scsvs = sk_SSL_CIPHER_new_null();
6511 if (sk == NULL || scsvs == NULL) {
6513 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6515 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6519 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6521 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6522 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6523 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6525 if (sslv2format && cipher[0] != '\0')
6528 /* For SSLv2-compat, ignore leading 0-byte. */
6529 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6531 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6532 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6534 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6536 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6541 if (PACKET_remaining(cipher_suites) > 0) {
6543 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6545 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6552 sk_SSL_CIPHER_free(sk);
6553 if (scsvs_out != NULL)
6556 sk_SSL_CIPHER_free(scsvs);
6559 sk_SSL_CIPHER_free(sk);
6560 sk_SSL_CIPHER_free(scsvs);
6564 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6566 ctx->max_early_data = max_early_data;
6571 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6573 return ctx->max_early_data;
6576 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6578 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6583 sc->max_early_data = max_early_data;
6588 uint32_t SSL_get_max_early_data(const SSL *s)
6590 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6595 return sc->max_early_data;
6598 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6600 ctx->recv_max_early_data = recv_max_early_data;
6605 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6607 return ctx->recv_max_early_data;
6610 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6612 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6617 sc->recv_max_early_data = recv_max_early_data;
6622 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6624 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6629 return sc->recv_max_early_data;
6632 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6634 /* Return any active Max Fragment Len extension */
6635 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6636 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6638 /* return current SSL connection setting */
6639 return sc->max_send_fragment;
6642 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6644 /* Return a value regarding an active Max Fragment Len extension */
6645 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6646 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6647 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6649 /* else limit |split_send_fragment| to current |max_send_fragment| */
6650 if (sc->split_send_fragment > sc->max_send_fragment)
6651 return sc->max_send_fragment;
6653 /* return current SSL connection setting */
6654 return sc->split_send_fragment;
6657 int SSL_stateless(SSL *s)
6660 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6662 /* TODO(QUIC): This will need further work. */
6666 /* Ensure there is no state left over from a previous invocation */
6672 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6673 ret = SSL_accept(s);
6674 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6676 if (ret > 0 && sc->ext.cookieok)
6679 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6685 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6687 ctx->pha_enabled = val;
6690 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6692 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6697 sc->pha_enabled = val;
6700 int SSL_verify_client_post_handshake(SSL *ssl)
6702 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6707 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6708 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6712 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6716 if (!SSL_is_init_finished(ssl)) {
6717 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6721 switch (sc->post_handshake_auth) {
6723 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6726 case SSL_PHA_EXT_SENT:
6727 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6729 case SSL_PHA_EXT_RECEIVED:
6731 case SSL_PHA_REQUEST_PENDING:
6732 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6734 case SSL_PHA_REQUESTED:
6735 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6739 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6741 /* checks verify_mode and algorithm_auth */
6742 if (!send_certificate_request(sc)) {
6743 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6744 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6748 ossl_statem_set_in_init(sc, 1);
6752 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6753 SSL_CTX_generate_session_ticket_fn gen_cb,
6754 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6757 ctx->generate_ticket_cb = gen_cb;
6758 ctx->decrypt_ticket_cb = dec_cb;
6759 ctx->ticket_cb_data = arg;
6763 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6764 SSL_allow_early_data_cb_fn cb,
6767 ctx->allow_early_data_cb = cb;
6768 ctx->allow_early_data_cb_data = arg;
6771 void SSL_set_allow_early_data_cb(SSL *s,
6772 SSL_allow_early_data_cb_fn cb,
6775 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6780 sc->allow_early_data_cb = cb;
6781 sc->allow_early_data_cb_data = arg;
6784 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6786 const char *properties)
6788 const EVP_CIPHER *ciph;
6790 ciph = tls_get_cipher_from_engine(nid);
6795 * If there is no engine cipher then we do an explicit fetch. This may fail
6796 * and that could be ok
6799 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6805 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6807 /* Don't up-ref an implicit EVP_CIPHER */
6808 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6812 * The cipher was explicitly fetched and therefore it is safe to cast
6815 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6818 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6823 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6825 * The cipher was explicitly fetched and therefore it is safe to cast
6828 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6832 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6834 const char *properties)
6838 md = tls_get_digest_from_engine(nid);
6842 /* Otherwise we do an explicit fetch */
6844 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6849 int ssl_evp_md_up_ref(const EVP_MD *md)
6851 /* Don't up-ref an implicit EVP_MD */
6852 if (EVP_MD_get0_provider(md) == NULL)
6856 * The digest was explicitly fetched and therefore it is safe to cast
6859 return EVP_MD_up_ref((EVP_MD *)md);
6862 void ssl_evp_md_free(const EVP_MD *md)
6867 if (EVP_MD_get0_provider(md) != NULL) {
6869 * The digest was explicitly fetched and therefore it is safe to cast
6872 EVP_MD_free((EVP_MD *)md);
6876 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6878 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6883 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6884 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6885 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6888 EVP_PKEY_free(sc->cert->dh_tmp);
6889 sc->cert->dh_tmp = dhpkey;
6893 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6895 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6896 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6897 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6900 EVP_PKEY_free(ctx->cert->dh_tmp);
6901 ctx->cert->dh_tmp = dhpkey;