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))
889 * TODO(RECLAYER): This assignment should probably initialy come from the
890 * SSL_METHOD, and potentially be updated later. For now though we just
893 if (SSL_CONNECTION_IS_DTLS(s))
894 s->rrlmethod = &ossl_dtls_record_method;
896 s->rrlmethod = &ossl_tls_record_method;
898 /* BIO is NULL initially. It will get updated later */
899 s->rrl = s->rrlmethod->new_record_layer(s->version, s->server,
900 OSSL_RECORD_DIRECTION_READ,
901 0, 0, 0, NULL, NULL, NULL,
907 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
911 int SSL_is_dtls(const SSL *s)
913 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
918 return SSL_CONNECTION_IS_DTLS(sc) ? 1 : 0;
921 int SSL_up_ref(SSL *s)
925 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
928 REF_PRINT_COUNT("SSL", s);
929 REF_ASSERT_ISNT(i < 2);
930 return ((i > 1) ? 1 : 0);
933 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
934 unsigned int sid_ctx_len)
936 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
937 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
940 ctx->sid_ctx_length = sid_ctx_len;
941 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
946 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
947 unsigned int sid_ctx_len)
949 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
954 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
955 ERR_raise(ERR_LIB_SSL, SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
958 sc->sid_ctx_length = sid_ctx_len;
959 memcpy(sc->sid_ctx, sid_ctx, sid_ctx_len);
964 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
966 if (!CRYPTO_THREAD_write_lock(ctx->lock))
968 ctx->generate_session_id = cb;
969 CRYPTO_THREAD_unlock(ctx->lock);
973 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
975 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
977 if (sc == NULL || !CRYPTO_THREAD_write_lock(ssl->lock))
979 sc->generate_session_id = cb;
980 CRYPTO_THREAD_unlock(ssl->lock);
984 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
988 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
989 * we can "construct" a session to give us the desired check - i.e. to
990 * find if there's a session in the hash table that would conflict with
991 * any new session built out of this id/id_len and the ssl_version in use
995 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
997 if (sc == NULL || id_len > sizeof(r.session_id))
1000 r.ssl_version = sc->version;
1001 r.session_id_length = id_len;
1002 memcpy(r.session_id, id, id_len);
1004 if (!CRYPTO_THREAD_read_lock(sc->session_ctx->lock))
1006 p = lh_SSL_SESSION_retrieve(sc->session_ctx->sessions, &r);
1007 CRYPTO_THREAD_unlock(sc->session_ctx->lock);
1011 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
1013 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
1016 int SSL_set_purpose(SSL *s, int purpose)
1018 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1023 return X509_VERIFY_PARAM_set_purpose(sc->param, purpose);
1026 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
1028 return X509_VERIFY_PARAM_set_trust(s->param, trust);
1031 int SSL_set_trust(SSL *s, int trust)
1033 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1038 return X509_VERIFY_PARAM_set_trust(sc->param, trust);
1041 int SSL_set1_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. */
1050 if (hostname != NULL
1051 && X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname) == 1)
1054 return X509_VERIFY_PARAM_set1_host(sc->param, hostname, 0);
1057 int SSL_add1_host(SSL *s, const char *hostname)
1059 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1064 /* If a hostname is provided and parses as an IP address,
1065 * treat it as such. */
1068 ASN1_OCTET_STRING *ip;
1071 ip = a2i_IPADDRESS(hostname);
1073 /* We didn't want it; only to check if it *is* an IP address */
1074 ASN1_OCTET_STRING_free(ip);
1076 old_ip = X509_VERIFY_PARAM_get1_ip_asc(sc->param);
1079 OPENSSL_free(old_ip);
1080 /* There can be only one IP address */
1084 return X509_VERIFY_PARAM_set1_ip_asc(sc->param, hostname);
1088 return X509_VERIFY_PARAM_add1_host(sc->param, hostname, 0);
1091 void SSL_set_hostflags(SSL *s, unsigned int flags)
1093 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1098 X509_VERIFY_PARAM_set_hostflags(sc->param, flags);
1101 const char *SSL_get0_peername(SSL *s)
1103 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1108 return X509_VERIFY_PARAM_get0_peername(sc->param);
1111 int SSL_CTX_dane_enable(SSL_CTX *ctx)
1113 return dane_ctx_enable(&ctx->dane);
1116 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
1118 unsigned long orig = ctx->dane.flags;
1120 ctx->dane.flags |= flags;
1124 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1126 unsigned long orig = ctx->dane.flags;
1128 ctx->dane.flags &= ~flags;
1132 int SSL_dane_enable(SSL *s, const char *basedomain)
1135 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1141 if (s->ctx->dane.mdmax == 0) {
1142 ERR_raise(ERR_LIB_SSL, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1145 if (dane->trecs != NULL) {
1146 ERR_raise(ERR_LIB_SSL, SSL_R_DANE_ALREADY_ENABLED);
1151 * Default SNI name. This rejects empty names, while set1_host below
1152 * accepts them and disables host name checks. To avoid side-effects with
1153 * invalid input, set the SNI name first.
1155 if (sc->ext.hostname == NULL) {
1156 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1157 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1162 /* Primary RFC6125 reference identifier */
1163 if (!X509_VERIFY_PARAM_set1_host(sc->param, basedomain, 0)) {
1164 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1170 dane->dctx = &s->ctx->dane;
1171 dane->trecs = sk_danetls_record_new_null();
1173 if (dane->trecs == NULL) {
1174 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
1180 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1183 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1188 orig = sc->dane.flags;
1190 sc->dane.flags |= flags;
1194 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1197 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1202 orig = sc->dane.flags;
1204 sc->dane.flags &= ~flags;
1208 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1211 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1218 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1222 *mcert = dane->mcert;
1224 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1229 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1230 uint8_t *mtype, const unsigned char **data, size_t *dlen)
1233 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1240 if (!DANETLS_ENABLED(dane) || sc->verify_result != X509_V_OK)
1244 *usage = dane->mtlsa->usage;
1246 *selector = dane->mtlsa->selector;
1248 *mtype = dane->mtlsa->mtype;
1250 *data = dane->mtlsa->data;
1252 *dlen = dane->mtlsa->dlen;
1257 SSL_DANE *SSL_get0_dane(SSL *s)
1259 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1267 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1268 uint8_t mtype, const unsigned char *data, size_t dlen)
1270 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1275 return dane_tlsa_add(&sc->dane, usage, selector, mtype, data, dlen);
1278 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1281 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1284 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1286 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1289 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1291 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1296 return X509_VERIFY_PARAM_set1(sc->param, vpm);
1299 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1304 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1306 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1314 void SSL_certs_clear(SSL *s)
1316 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1321 ssl_cert_clear_certs(sc->cert);
1324 void SSL_free(SSL *s)
1330 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1331 REF_PRINT_COUNT("SSL", s);
1334 REF_ASSERT_ISNT(i < 0);
1336 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1338 if (s->method != NULL)
1339 s->method->ssl_free(s);
1341 SSL_CTX_free(s->ctx);
1342 CRYPTO_THREAD_lock_free(s->lock);
1347 void ossl_ssl_connection_free(SSL *ssl)
1351 s = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
1355 X509_VERIFY_PARAM_free(s->param);
1356 dane_final(&s->dane);
1358 RECORD_LAYER_release(&s->rlayer);
1360 /* Ignore return value */
1361 ssl_free_wbio_buffer(s);
1363 BIO_free_all(s->wbio);
1365 BIO_free_all(s->rbio);
1368 BUF_MEM_free(s->init_buf);
1370 /* add extra stuff */
1371 sk_SSL_CIPHER_free(s->cipher_list);
1372 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1373 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1374 sk_SSL_CIPHER_free(s->peer_ciphers);
1376 /* Make the next call work :-) */
1377 if (s->session != NULL) {
1378 ssl_clear_bad_session(s);
1379 SSL_SESSION_free(s->session);
1381 SSL_SESSION_free(s->psksession);
1382 OPENSSL_free(s->psksession_id);
1386 ssl_cert_free(s->cert);
1387 OPENSSL_free(s->shared_sigalgs);
1388 /* Free up if allocated */
1390 OPENSSL_free(s->ext.hostname);
1391 SSL_CTX_free(s->session_ctx);
1392 OPENSSL_free(s->ext.ecpointformats);
1393 OPENSSL_free(s->ext.peer_ecpointformats);
1394 OPENSSL_free(s->ext.supportedgroups);
1395 OPENSSL_free(s->ext.peer_supportedgroups);
1396 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1397 #ifndef OPENSSL_NO_OCSP
1398 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1400 #ifndef OPENSSL_NO_CT
1401 SCT_LIST_free(s->scts);
1402 OPENSSL_free(s->ext.scts);
1404 OPENSSL_free(s->ext.ocsp.resp);
1405 OPENSSL_free(s->ext.alpn);
1406 OPENSSL_free(s->ext.tls13_cookie);
1407 if (s->clienthello != NULL)
1408 OPENSSL_free(s->clienthello->pre_proc_exts);
1409 OPENSSL_free(s->clienthello);
1410 OPENSSL_free(s->pha_context);
1411 EVP_MD_CTX_free(s->pha_dgst);
1413 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1414 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1416 OSSL_STACK_OF_X509_free(s->verified_chain);
1418 if (ssl->method != NULL)
1419 ssl->method->ssl_deinit(ssl);
1421 ASYNC_WAIT_CTX_free(s->waitctx);
1423 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1424 OPENSSL_free(s->ext.npn);
1427 #ifndef OPENSSL_NO_SRTP
1428 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1432 void SSL_set0_rbio(SSL *s, BIO *rbio)
1434 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1439 BIO_free_all(sc->rbio);
1441 sc->rrlmethod->set1_bio(sc->rrl, sc->rbio);
1444 void SSL_set0_wbio(SSL *s, BIO *wbio)
1446 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1452 * If the output buffering BIO is still in place, remove it
1454 if (sc->bbio != NULL)
1455 sc->wbio = BIO_pop(sc->wbio);
1457 BIO_free_all(sc->wbio);
1460 /* Re-attach |bbio| to the new |wbio|. */
1461 if (sc->bbio != NULL)
1462 sc->wbio = BIO_push(sc->bbio, sc->wbio);
1465 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1468 * For historical reasons, this function has many different cases in
1469 * ownership handling.
1472 /* If nothing has changed, do nothing */
1473 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1477 * If the two arguments are equal then one fewer reference is granted by the
1478 * caller than we want to take
1480 if (rbio != NULL && rbio == wbio)
1484 * If only the wbio is changed only adopt one reference.
1486 if (rbio == SSL_get_rbio(s)) {
1487 SSL_set0_wbio(s, wbio);
1491 * There is an asymmetry here for historical reasons. If only the rbio is
1492 * changed AND the rbio and wbio were originally different, then we only
1493 * adopt one reference.
1495 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1496 SSL_set0_rbio(s, rbio);
1500 /* Otherwise, adopt both references. */
1501 SSL_set0_rbio(s, rbio);
1502 SSL_set0_wbio(s, wbio);
1505 BIO *SSL_get_rbio(const SSL *s)
1507 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1515 BIO *SSL_get_wbio(const SSL *s)
1517 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1522 if (sc->bbio != NULL) {
1524 * If |bbio| is active, the true caller-configured BIO is its
1527 return BIO_next(sc->bbio);
1532 int SSL_get_fd(const SSL *s)
1534 return SSL_get_rfd(s);
1537 int SSL_get_rfd(const SSL *s)
1542 b = SSL_get_rbio(s);
1543 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1545 BIO_get_fd(r, &ret);
1549 int SSL_get_wfd(const SSL *s)
1554 b = SSL_get_wbio(s);
1555 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1557 BIO_get_fd(r, &ret);
1561 #ifndef OPENSSL_NO_SOCK
1562 int SSL_set_fd(SSL *s, int fd)
1567 bio = BIO_new(BIO_s_socket());
1570 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1573 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1574 SSL_set_bio(s, bio, bio);
1575 #ifndef OPENSSL_NO_KTLS
1577 * The new socket is created successfully regardless of ktls_enable.
1578 * ktls_enable doesn't change any functionality of the socket, except
1579 * changing the setsockopt to enable the processing of ktls_start.
1580 * Thus, it is not a problem to call it for non-TLS sockets.
1583 #endif /* OPENSSL_NO_KTLS */
1589 int SSL_set_wfd(SSL *s, int fd)
1591 BIO *rbio = SSL_get_rbio(s);
1593 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1594 || (int)BIO_get_fd(rbio, NULL) != fd) {
1595 BIO *bio = BIO_new(BIO_s_socket());
1598 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1601 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1602 SSL_set0_wbio(s, bio);
1603 #ifndef OPENSSL_NO_KTLS
1605 * The new socket is created successfully regardless of ktls_enable.
1606 * ktls_enable doesn't change any functionality of the socket, except
1607 * changing the setsockopt to enable the processing of ktls_start.
1608 * Thus, it is not a problem to call it for non-TLS sockets.
1611 #endif /* OPENSSL_NO_KTLS */
1614 SSL_set0_wbio(s, rbio);
1619 int SSL_set_rfd(SSL *s, int fd)
1621 BIO *wbio = SSL_get_wbio(s);
1623 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1624 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1625 BIO *bio = BIO_new(BIO_s_socket());
1628 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
1631 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1632 SSL_set0_rbio(s, bio);
1635 SSL_set0_rbio(s, wbio);
1642 /* return length of latest Finished message we sent, copy to 'buf' */
1643 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1646 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1651 ret = sc->s3.tmp.finish_md_len;
1654 memcpy(buf, sc->s3.tmp.finish_md, count);
1658 /* return length of latest Finished message we expected, copy to 'buf' */
1659 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1662 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1667 ret = sc->s3.tmp.peer_finish_md_len;
1670 memcpy(buf, sc->s3.tmp.peer_finish_md, count);
1674 int SSL_get_verify_mode(const SSL *s)
1676 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1681 return sc->verify_mode;
1684 int SSL_get_verify_depth(const SSL *s)
1686 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1691 return X509_VERIFY_PARAM_get_depth(sc->param);
1694 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1695 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1700 return sc->verify_callback;
1703 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1705 return ctx->verify_mode;
1708 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1710 return X509_VERIFY_PARAM_get_depth(ctx->param);
1713 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1714 return ctx->default_verify_callback;
1717 void SSL_set_verify(SSL *s, int mode,
1718 int (*callback) (int ok, X509_STORE_CTX *ctx))
1720 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1725 sc->verify_mode = mode;
1726 if (callback != NULL)
1727 sc->verify_callback = callback;
1730 void SSL_set_verify_depth(SSL *s, int depth)
1732 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1737 X509_VERIFY_PARAM_set_depth(sc->param, depth);
1740 void SSL_set_read_ahead(SSL *s, int yes)
1742 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1747 RECORD_LAYER_set_read_ahead(&sc->rlayer, yes);
1750 int SSL_get_read_ahead(const SSL *s)
1752 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1757 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
1760 int SSL_pending(const SSL *s)
1762 size_t pending = s->method->ssl_pending(s);
1765 * SSL_pending cannot work properly if read-ahead is enabled
1766 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1767 * impossible to fix since SSL_pending cannot report errors that may be
1768 * observed while scanning the new data. (Note that SSL_pending() is
1769 * often used as a boolean value, so we'd better not return -1.)
1771 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1772 * we just return INT_MAX.
1774 return pending < INT_MAX ? (int)pending : INT_MAX;
1777 int SSL_has_pending(const SSL *s)
1780 * Similar to SSL_pending() but returns a 1 to indicate that we have
1781 * processed or unprocessed data available or 0 otherwise (as opposed to the
1782 * number of bytes available). Unlike SSL_pending() this will take into
1783 * account read_ahead data. A 1 return simply indicates that we have data.
1784 * That data may not result in any application data, or we may fail to parse
1785 * the records for some reason.
1787 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1789 /* Check buffered app data if any first */
1790 if (SSL_CONNECTION_IS_DTLS(sc)) {
1791 DTLS1_RECORD_DATA *rdata;
1794 iter = pqueue_iterator(sc->rlayer.d->buffered_app_data.q);
1795 while ((item = pqueue_next(&iter)) != NULL) {
1797 if (rdata->rrec.length > 0)
1802 if (RECORD_LAYER_processed_read_pending(&sc->rlayer))
1805 return RECORD_LAYER_read_pending(&sc->rlayer);
1808 X509 *SSL_get1_peer_certificate(const SSL *s)
1810 X509 *r = SSL_get0_peer_certificate(s);
1818 X509 *SSL_get0_peer_certificate(const SSL *s)
1820 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1825 if (sc->session == NULL)
1828 return sc->session->peer;
1831 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1834 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
1839 if (sc->session == NULL)
1842 r = sc->session->peer_chain;
1845 * If we are a client, cert_chain includes the peer's own certificate; if
1846 * we are a server, it does not.
1853 * Now in theory, since the calling process own 't' it should be safe to
1854 * modify. We need to be able to read f without being hassled
1856 int SSL_copy_session_id(SSL *t, const SSL *f)
1859 /* TODO(QUIC): Do we want to support this for QUIC connections? */
1860 SSL_CONNECTION *tsc = SSL_CONNECTION_FROM_SSL_ONLY(t);
1861 const SSL_CONNECTION *fsc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(f);
1863 if (tsc == NULL || fsc == NULL)
1866 /* Do we need to do SSL locking? */
1867 if (!SSL_set_session(t, SSL_get_session(f))) {
1872 * what if we are setup for one protocol version but want to talk another
1874 if (t->method != f->method) {
1875 t->method->ssl_deinit(t);
1876 t->method = f->method;
1877 if (t->method->ssl_init(t) == 0)
1881 CRYPTO_UP_REF(&fsc->cert->references, &i, fsc->cert->lock);
1882 ssl_cert_free(tsc->cert);
1883 tsc->cert = fsc->cert;
1884 if (!SSL_set_session_id_context(t, fsc->sid_ctx, (int)fsc->sid_ctx_length)) {
1891 /* Fix this so it checks all the valid key/cert options */
1892 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1894 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1895 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1898 if (ctx->cert->key->privatekey == NULL) {
1899 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1902 return X509_check_private_key
1903 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1906 /* Fix this function so that it takes an optional type parameter */
1907 int SSL_check_private_key(const SSL *ssl)
1909 const SSL_CONNECTION *sc;
1911 if ((sc = SSL_CONNECTION_FROM_CONST_SSL(ssl)) == NULL) {
1912 ERR_raise(ERR_LIB_SSL, ERR_R_PASSED_NULL_PARAMETER);
1915 if (sc->cert->key->x509 == NULL) {
1916 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CERTIFICATE_ASSIGNED);
1919 if (sc->cert->key->privatekey == NULL) {
1920 ERR_raise(ERR_LIB_SSL, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1923 return X509_check_private_key(sc->cert->key->x509,
1924 sc->cert->key->privatekey);
1927 int SSL_waiting_for_async(SSL *s)
1929 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1940 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1942 ASYNC_WAIT_CTX *ctx;
1943 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1948 if ((ctx = sc->waitctx) == NULL)
1950 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1953 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1954 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1956 ASYNC_WAIT_CTX *ctx;
1957 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1962 if ((ctx = sc->waitctx) == NULL)
1964 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1968 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1970 ctx->async_cb = callback;
1974 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1976 ctx->async_cb_arg = arg;
1980 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1982 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1987 sc->async_cb = callback;
1991 int SSL_set_async_callback_arg(SSL *s, void *arg)
1993 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
1998 sc->async_cb_arg = arg;
2002 int SSL_get_async_status(SSL *s, int *status)
2004 ASYNC_WAIT_CTX *ctx;
2005 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2010 if ((ctx = sc->waitctx) == NULL)
2012 *status = ASYNC_WAIT_CTX_get_status(ctx);
2016 int SSL_accept(SSL *s)
2018 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2023 if (sc->handshake_func == NULL) {
2024 /* Not properly initialized yet */
2025 SSL_set_accept_state(s);
2028 return SSL_do_handshake(s);
2031 int SSL_connect(SSL *s)
2033 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2038 if (sc->handshake_func == NULL) {
2039 /* Not properly initialized yet */
2040 SSL_set_connect_state(s);
2043 return SSL_do_handshake(s);
2046 long SSL_get_default_timeout(const SSL *s)
2048 return s->method->get_timeout();
2051 static int ssl_async_wait_ctx_cb(void *arg)
2053 SSL *s = (SSL *)arg;
2054 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2059 return sc->async_cb(s, sc->async_cb_arg);
2062 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
2063 int (*func) (void *))
2066 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2071 if (sc->waitctx == NULL) {
2072 sc->waitctx = ASYNC_WAIT_CTX_new();
2073 if (sc->waitctx == NULL)
2075 if (sc->async_cb != NULL
2076 && !ASYNC_WAIT_CTX_set_callback
2077 (sc->waitctx, ssl_async_wait_ctx_cb, s))
2081 sc->rwstate = SSL_NOTHING;
2082 switch (ASYNC_start_job(&sc->job, sc->waitctx, &ret, func, args,
2083 sizeof(struct ssl_async_args))) {
2085 sc->rwstate = SSL_NOTHING;
2086 ERR_raise(ERR_LIB_SSL, SSL_R_FAILED_TO_INIT_ASYNC);
2089 sc->rwstate = SSL_ASYNC_PAUSED;
2092 sc->rwstate = SSL_ASYNC_NO_JOBS;
2098 sc->rwstate = SSL_NOTHING;
2099 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
2100 /* Shouldn't happen */
2105 static int ssl_io_intern(void *vargs)
2107 struct ssl_async_args *args;
2113 args = (struct ssl_async_args *)vargs;
2117 if ((sc = SSL_CONNECTION_FROM_SSL(s)) == NULL)
2120 switch (args->type) {
2122 return args->f.func_read(s, buf, num, &sc->asyncrw);
2124 return args->f.func_write(s, buf, num, &sc->asyncrw);
2126 return args->f.func_other(s);
2131 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2133 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2138 if (sc->handshake_func == NULL) {
2139 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2143 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2144 sc->rwstate = SSL_NOTHING;
2148 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2149 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
2150 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2154 * If we are a client and haven't received the ServerHello etc then we
2157 ossl_statem_check_finish_init(sc, 0);
2159 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2160 struct ssl_async_args args;
2166 args.type = READFUNC;
2167 args.f.func_read = s->method->ssl_read;
2169 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2170 *readbytes = sc->asyncrw;
2173 return s->method->ssl_read(s, buf, num, readbytes);
2177 int SSL_read(SSL *s, void *buf, int num)
2183 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2187 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
2190 * The cast is safe here because ret should be <= INT_MAX because num is
2194 ret = (int)readbytes;
2199 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2201 int ret = ssl_read_internal(s, buf, num, readbytes);
2208 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
2211 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2213 /* TODO(QUIC): This will need special handling for QUIC */
2218 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2219 return SSL_READ_EARLY_DATA_ERROR;
2222 switch (sc->early_data_state) {
2223 case SSL_EARLY_DATA_NONE:
2224 if (!SSL_in_before(s)) {
2225 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2226 return SSL_READ_EARLY_DATA_ERROR;
2230 case SSL_EARLY_DATA_ACCEPT_RETRY:
2231 sc->early_data_state = SSL_EARLY_DATA_ACCEPTING;
2232 ret = SSL_accept(s);
2235 sc->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
2236 return SSL_READ_EARLY_DATA_ERROR;
2240 case SSL_EARLY_DATA_READ_RETRY:
2241 if (sc->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
2242 sc->early_data_state = SSL_EARLY_DATA_READING;
2243 ret = SSL_read_ex(s, buf, num, readbytes);
2245 * State machine will update early_data_state to
2246 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
2249 if (ret > 0 || (ret <= 0 && sc->early_data_state
2250 != SSL_EARLY_DATA_FINISHED_READING)) {
2251 sc->early_data_state = SSL_EARLY_DATA_READ_RETRY;
2252 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
2253 : SSL_READ_EARLY_DATA_ERROR;
2256 sc->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
2259 return SSL_READ_EARLY_DATA_FINISH;
2262 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2263 return SSL_READ_EARLY_DATA_ERROR;
2267 int SSL_get_early_data_status(const SSL *s)
2269 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
2271 /* TODO(QUIC): This will need special handling for QUIC */
2275 return sc->ext.early_data;
2278 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
2280 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2285 if (sc->handshake_func == NULL) {
2286 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2290 if (sc->shutdown & SSL_RECEIVED_SHUTDOWN) {
2293 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2294 struct ssl_async_args args;
2300 args.type = READFUNC;
2301 args.f.func_read = s->method->ssl_peek;
2303 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2304 *readbytes = sc->asyncrw;
2307 return s->method->ssl_peek(s, buf, num, readbytes);
2311 int SSL_peek(SSL *s, void *buf, int num)
2317 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2321 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
2324 * The cast is safe here because ret should be <= INT_MAX because num is
2328 ret = (int)readbytes;
2334 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
2336 int ret = ssl_peek_internal(s, buf, num, readbytes);
2343 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
2345 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2350 if (sc->handshake_func == NULL) {
2351 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2355 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2356 sc->rwstate = SSL_NOTHING;
2357 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2361 if (sc->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
2362 || sc->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
2363 || sc->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
2364 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2367 /* If we are a client and haven't sent the Finished we better do that */
2368 ossl_statem_check_finish_init(sc, 1);
2370 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2372 struct ssl_async_args args;
2375 args.buf = (void *)buf;
2377 args.type = WRITEFUNC;
2378 args.f.func_write = s->method->ssl_write;
2380 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2381 *written = sc->asyncrw;
2384 return s->method->ssl_write(s, buf, num, written);
2388 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2391 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2396 if (sc->handshake_func == NULL) {
2397 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2401 if (sc->shutdown & SSL_SENT_SHUTDOWN) {
2402 sc->rwstate = SSL_NOTHING;
2403 ERR_raise(ERR_LIB_SSL, SSL_R_PROTOCOL_IS_SHUTDOWN);
2407 if (!BIO_get_ktls_send(sc->wbio)) {
2408 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2412 /* If we have an alert to send, lets send it */
2413 if (sc->s3.alert_dispatch) {
2414 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2416 /* SSLfatal() already called if appropriate */
2419 /* if it went, fall through and send more stuff */
2422 sc->rwstate = SSL_WRITING;
2423 if (BIO_flush(sc->wbio) <= 0) {
2424 if (!BIO_should_retry(sc->wbio)) {
2425 sc->rwstate = SSL_NOTHING;
2428 set_sys_error(EAGAIN);
2434 #ifdef OPENSSL_NO_KTLS
2435 ERR_raise_data(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR,
2436 "can't call ktls_sendfile(), ktls disabled");
2439 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2441 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2442 if ((get_last_sys_error() == EAGAIN) ||
2443 (get_last_sys_error() == EINTR) ||
2444 (get_last_sys_error() == EBUSY))
2445 BIO_set_retry_write(sc->wbio);
2448 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2451 sc->rwstate = SSL_NOTHING;
2456 int SSL_write(SSL *s, const void *buf, int num)
2462 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
2466 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2469 * The cast is safe here because ret should be <= INT_MAX because num is
2478 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2480 int ret = ssl_write_internal(s, buf, num, written);
2487 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2489 int ret, early_data_state;
2491 uint32_t partialwrite;
2492 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2494 /* TODO(QUIC): This will need special handling for QUIC */
2498 switch (sc->early_data_state) {
2499 case SSL_EARLY_DATA_NONE:
2501 || !SSL_in_before(s)
2502 || ((sc->session == NULL || sc->session->ext.max_early_data == 0)
2503 && (sc->psk_use_session_cb == NULL))) {
2504 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2509 case SSL_EARLY_DATA_CONNECT_RETRY:
2510 sc->early_data_state = SSL_EARLY_DATA_CONNECTING;
2511 ret = SSL_connect(s);
2514 sc->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2519 case SSL_EARLY_DATA_WRITE_RETRY:
2520 sc->early_data_state = SSL_EARLY_DATA_WRITING;
2522 * We disable partial write for early data because we don't keep track
2523 * of how many bytes we've written between the SSL_write_ex() call and
2524 * the flush if the flush needs to be retried)
2526 partialwrite = sc->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2527 sc->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2528 ret = SSL_write_ex(s, buf, num, &writtmp);
2529 sc->mode |= partialwrite;
2531 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2534 sc->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2537 case SSL_EARLY_DATA_WRITE_FLUSH:
2538 /* The buffering BIO is still in place so we need to flush it */
2539 if (statem_flush(sc) != 1)
2542 sc->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2545 case SSL_EARLY_DATA_FINISHED_READING:
2546 case SSL_EARLY_DATA_READ_RETRY:
2547 early_data_state = sc->early_data_state;
2548 /* We are a server writing to an unauthenticated client */
2549 sc->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2550 ret = SSL_write_ex(s, buf, num, written);
2551 /* The buffering BIO is still in place */
2553 (void)BIO_flush(sc->wbio);
2554 sc->early_data_state = early_data_state;
2558 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2563 int SSL_shutdown(SSL *s)
2566 * Note that this function behaves differently from what one might
2567 * expect. Return values are 0 for no success (yet), 1 for success; but
2568 * calling it once is usually not enough, even if blocking I/O is used
2569 * (see ssl3_shutdown).
2571 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2576 if (sc->handshake_func == NULL) {
2577 ERR_raise(ERR_LIB_SSL, SSL_R_UNINITIALIZED);
2581 if (!SSL_in_init(s)) {
2582 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2583 struct ssl_async_args args;
2585 memset(&args, 0, sizeof(args));
2587 args.type = OTHERFUNC;
2588 args.f.func_other = s->method->ssl_shutdown;
2590 return ssl_start_async_job(s, &args, ssl_io_intern);
2592 return s->method->ssl_shutdown(s);
2595 ERR_raise(ERR_LIB_SSL, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2600 int SSL_key_update(SSL *s, int updatetype)
2602 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2607 if (!SSL_CONNECTION_IS_TLS13(sc)) {
2608 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2612 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2613 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2614 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_KEY_UPDATE_TYPE);
2618 if (!SSL_is_init_finished(s)) {
2619 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
2623 if (RECORD_LAYER_write_pending(&sc->rlayer)) {
2624 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_WRITE_RETRY);
2628 ossl_statem_set_in_init(sc, 1);
2629 sc->key_update = updatetype;
2633 int SSL_get_key_update_type(const SSL *s)
2635 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
2640 return sc->key_update;
2644 * Can we accept a renegotiation request? If yes, set the flag and
2645 * return 1 if yes. If not, raise error and return 0.
2647 static int can_renegotiate(const SSL_CONNECTION *sc)
2649 if (SSL_CONNECTION_IS_TLS13(sc)) {
2650 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
2654 if ((sc->options & SSL_OP_NO_RENEGOTIATION) != 0) {
2655 ERR_raise(ERR_LIB_SSL, SSL_R_NO_RENEGOTIATION);
2662 int SSL_renegotiate(SSL *s)
2664 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2669 if (!can_renegotiate(sc))
2672 sc->renegotiate = 1;
2673 sc->new_session = 1;
2674 return s->method->ssl_renegotiate(s);
2677 int SSL_renegotiate_abbreviated(SSL *s)
2679 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2684 if (!can_renegotiate(sc))
2687 sc->renegotiate = 1;
2688 sc->new_session = 0;
2689 return s->method->ssl_renegotiate(s);
2692 int SSL_renegotiate_pending(const SSL *s)
2694 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
2700 * becomes true when negotiation is requested; false again once a
2701 * handshake has finished
2703 return (sc->renegotiate != 0);
2706 int SSL_new_session_ticket(SSL *s)
2708 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2713 /* If we are in init because we're sending tickets, okay to send more. */
2714 if ((SSL_in_init(s) && sc->ext.extra_tickets_expected == 0)
2715 || SSL_IS_FIRST_HANDSHAKE(sc) || !sc->server
2716 || !SSL_CONNECTION_IS_TLS13(sc))
2718 sc->ext.extra_tickets_expected++;
2719 if (!RECORD_LAYER_write_pending(&sc->rlayer) && !SSL_in_init(s))
2720 ossl_statem_set_in_init(sc, 1);
2724 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2727 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2729 /* TODO(QUIC): Special handling for some ctrls will be needed */
2734 case SSL_CTRL_GET_READ_AHEAD:
2735 return RECORD_LAYER_get_read_ahead(&sc->rlayer);
2736 case SSL_CTRL_SET_READ_AHEAD:
2737 l = RECORD_LAYER_get_read_ahead(&sc->rlayer);
2738 RECORD_LAYER_set_read_ahead(&sc->rlayer, larg);
2741 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2742 sc->msg_callback_arg = parg;
2746 return (sc->mode |= larg);
2747 case SSL_CTRL_CLEAR_MODE:
2748 return (sc->mode &= ~larg);
2749 case SSL_CTRL_GET_MAX_CERT_LIST:
2750 return (long)sc->max_cert_list;
2751 case SSL_CTRL_SET_MAX_CERT_LIST:
2754 l = (long)sc->max_cert_list;
2755 sc->max_cert_list = (size_t)larg;
2757 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2758 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2760 #ifndef OPENSSL_NO_KTLS
2761 if (sc->wbio != NULL && BIO_get_ktls_send(sc->wbio))
2763 #endif /* OPENSSL_NO_KTLS */
2764 sc->max_send_fragment = larg;
2765 if (sc->max_send_fragment < sc->split_send_fragment)
2766 sc->split_send_fragment = sc->max_send_fragment;
2768 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2769 if ((size_t)larg > sc->max_send_fragment || larg == 0)
2771 sc->split_send_fragment = larg;
2773 case SSL_CTRL_SET_MAX_PIPELINES:
2774 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2776 sc->max_pipelines = larg;
2778 RECORD_LAYER_set_read_ahead(&sc->rlayer, 1);
2780 case SSL_CTRL_GET_RI_SUPPORT:
2781 return sc->s3.send_connection_binding;
2782 case SSL_CTRL_SET_RETRY_VERIFY:
2783 sc->rwstate = SSL_RETRY_VERIFY;
2785 case SSL_CTRL_CERT_FLAGS:
2786 return (sc->cert->cert_flags |= larg);
2787 case SSL_CTRL_CLEAR_CERT_FLAGS:
2788 return (sc->cert->cert_flags &= ~larg);
2790 case SSL_CTRL_GET_RAW_CIPHERLIST:
2792 if (sc->s3.tmp.ciphers_raw == NULL)
2794 *(unsigned char **)parg = sc->s3.tmp.ciphers_raw;
2795 return (int)sc->s3.tmp.ciphers_rawlen;
2797 return TLS_CIPHER_LEN;
2799 case SSL_CTRL_GET_EXTMS_SUPPORT:
2800 if (!sc->session || SSL_in_init(s) || ossl_statem_get_in_handshake(sc))
2802 if (sc->session->flags & SSL_SESS_FLAG_EXTMS)
2806 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2807 return ssl_check_allowed_versions(larg, sc->max_proto_version)
2808 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2809 &sc->min_proto_version);
2810 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2811 return sc->min_proto_version;
2812 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2813 return ssl_check_allowed_versions(sc->min_proto_version, larg)
2814 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2815 &sc->max_proto_version);
2816 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2817 return sc->max_proto_version;
2819 return s->method->ssl_ctrl(s, cmd, larg, parg);
2823 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2825 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
2831 case SSL_CTRL_SET_MSG_CALLBACK:
2832 sc->msg_callback = (void (*)
2833 (int write_p, int version, int content_type,
2834 const void *buf, size_t len, SSL *ssl,
2839 return s->method->ssl_callback_ctrl(s, cmd, fp);
2843 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2845 return ctx->sessions;
2848 static int ssl_tsan_load(SSL_CTX *ctx, TSAN_QUALIFIER int *stat)
2852 if (ssl_tsan_lock(ctx)) {
2853 res = tsan_load(stat);
2854 ssl_tsan_unlock(ctx);
2859 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2862 /* For some cases with ctx == NULL perform syntax checks */
2865 case SSL_CTRL_SET_GROUPS_LIST:
2866 return tls1_set_groups_list(ctx, NULL, NULL, parg);
2867 case SSL_CTRL_SET_SIGALGS_LIST:
2868 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2869 return tls1_set_sigalgs_list(NULL, parg, 0);
2876 case SSL_CTRL_GET_READ_AHEAD:
2877 return ctx->read_ahead;
2878 case SSL_CTRL_SET_READ_AHEAD:
2879 l = ctx->read_ahead;
2880 ctx->read_ahead = larg;
2883 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2884 ctx->msg_callback_arg = parg;
2887 case SSL_CTRL_GET_MAX_CERT_LIST:
2888 return (long)ctx->max_cert_list;
2889 case SSL_CTRL_SET_MAX_CERT_LIST:
2892 l = (long)ctx->max_cert_list;
2893 ctx->max_cert_list = (size_t)larg;
2896 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2899 l = (long)ctx->session_cache_size;
2900 ctx->session_cache_size = (size_t)larg;
2902 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2903 return (long)ctx->session_cache_size;
2904 case SSL_CTRL_SET_SESS_CACHE_MODE:
2905 l = ctx->session_cache_mode;
2906 ctx->session_cache_mode = larg;
2908 case SSL_CTRL_GET_SESS_CACHE_MODE:
2909 return ctx->session_cache_mode;
2911 case SSL_CTRL_SESS_NUMBER:
2912 return lh_SSL_SESSION_num_items(ctx->sessions);
2913 case SSL_CTRL_SESS_CONNECT:
2914 return ssl_tsan_load(ctx, &ctx->stats.sess_connect);
2915 case SSL_CTRL_SESS_CONNECT_GOOD:
2916 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_good);
2917 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2918 return ssl_tsan_load(ctx, &ctx->stats.sess_connect_renegotiate);
2919 case SSL_CTRL_SESS_ACCEPT:
2920 return ssl_tsan_load(ctx, &ctx->stats.sess_accept);
2921 case SSL_CTRL_SESS_ACCEPT_GOOD:
2922 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_good);
2923 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2924 return ssl_tsan_load(ctx, &ctx->stats.sess_accept_renegotiate);
2925 case SSL_CTRL_SESS_HIT:
2926 return ssl_tsan_load(ctx, &ctx->stats.sess_hit);
2927 case SSL_CTRL_SESS_CB_HIT:
2928 return ssl_tsan_load(ctx, &ctx->stats.sess_cb_hit);
2929 case SSL_CTRL_SESS_MISSES:
2930 return ssl_tsan_load(ctx, &ctx->stats.sess_miss);
2931 case SSL_CTRL_SESS_TIMEOUTS:
2932 return ssl_tsan_load(ctx, &ctx->stats.sess_timeout);
2933 case SSL_CTRL_SESS_CACHE_FULL:
2934 return ssl_tsan_load(ctx, &ctx->stats.sess_cache_full);
2936 return (ctx->mode |= larg);
2937 case SSL_CTRL_CLEAR_MODE:
2938 return (ctx->mode &= ~larg);
2939 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2940 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2942 ctx->max_send_fragment = larg;
2943 if (ctx->max_send_fragment < ctx->split_send_fragment)
2944 ctx->split_send_fragment = ctx->max_send_fragment;
2946 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2947 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2949 ctx->split_send_fragment = larg;
2951 case SSL_CTRL_SET_MAX_PIPELINES:
2952 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2954 ctx->max_pipelines = larg;
2956 case SSL_CTRL_CERT_FLAGS:
2957 return (ctx->cert->cert_flags |= larg);
2958 case SSL_CTRL_CLEAR_CERT_FLAGS:
2959 return (ctx->cert->cert_flags &= ~larg);
2960 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2961 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2962 && ssl_set_version_bound(ctx->method->version, (int)larg,
2963 &ctx->min_proto_version);
2964 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2965 return ctx->min_proto_version;
2966 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2967 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2968 && ssl_set_version_bound(ctx->method->version, (int)larg,
2969 &ctx->max_proto_version);
2970 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2971 return ctx->max_proto_version;
2973 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2977 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2980 case SSL_CTRL_SET_MSG_CALLBACK:
2981 ctx->msg_callback = (void (*)
2982 (int write_p, int version, int content_type,
2983 const void *buf, size_t len, SSL *ssl,
2988 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2992 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
3001 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
3002 const SSL_CIPHER *const *bp)
3004 if ((*ap)->id > (*bp)->id)
3006 if ((*ap)->id < (*bp)->id)
3012 * return a STACK of the ciphers available for the SSL and in order of
3015 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
3017 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3020 if (sc->cipher_list != NULL) {
3021 return sc->cipher_list;
3022 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
3023 return s->ctx->cipher_list;
3029 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
3031 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3033 if (sc == NULL || !sc->server)
3035 return sc->peer_ciphers;
3038 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
3040 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
3042 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3047 ciphers = SSL_get_ciphers(s);
3050 if (!ssl_set_client_disabled(sc))
3052 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
3053 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
3054 if (!ssl_cipher_disabled(sc, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
3056 sk = sk_SSL_CIPHER_new_null();
3059 if (!sk_SSL_CIPHER_push(sk, c)) {
3060 sk_SSL_CIPHER_free(sk);
3068 /** return a STACK of the ciphers available for the SSL and in order of
3070 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL_CONNECTION *s)
3073 if (s->cipher_list_by_id != NULL)
3074 return s->cipher_list_by_id;
3075 else if (s->ssl.ctx != NULL
3076 && s->ssl.ctx->cipher_list_by_id != NULL)
3077 return s->ssl.ctx->cipher_list_by_id;
3082 /** The old interface to get the same thing as SSL_get_ciphers() */
3083 const char *SSL_get_cipher_list(const SSL *s, int n)
3085 const SSL_CIPHER *c;
3086 STACK_OF(SSL_CIPHER) *sk;
3090 sk = SSL_get_ciphers(s);
3091 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
3093 c = sk_SSL_CIPHER_value(sk, n);
3099 /** return a STACK of the ciphers available for the SSL_CTX and in order of
3101 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
3104 return ctx->cipher_list;
3109 * Distinguish between ciphers controlled by set_ciphersuite() and
3110 * set_cipher_list() when counting.
3112 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
3115 const SSL_CIPHER *c;
3119 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
3120 c = sk_SSL_CIPHER_value(sk, i);
3121 if (c->min_tls >= TLS1_3_VERSION)
3128 /** specify the ciphers to be used by default by the SSL_CTX */
3129 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
3131 STACK_OF(SSL_CIPHER) *sk;
3133 sk = ssl_create_cipher_list(ctx, ctx->tls13_ciphersuites,
3134 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
3137 * ssl_create_cipher_list may return an empty stack if it was unable to
3138 * find a cipher matching the given rule string (for example if the rule
3139 * string specifies a cipher which has been disabled). This is not an
3140 * error as far as ssl_create_cipher_list is concerned, and hence
3141 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
3145 else if (cipher_list_tls12_num(sk) == 0) {
3146 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3152 /** specify the ciphers to be used by the SSL */
3153 int SSL_set_cipher_list(SSL *s, const char *str)
3155 STACK_OF(SSL_CIPHER) *sk;
3156 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3161 sk = ssl_create_cipher_list(s->ctx, sc->tls13_ciphersuites,
3162 &sc->cipher_list, &sc->cipher_list_by_id, str,
3164 /* see comment in SSL_CTX_set_cipher_list */
3167 else if (cipher_list_tls12_num(sk) == 0) {
3168 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHER_MATCH);
3174 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
3177 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
3178 const SSL_CIPHER *c;
3180 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3186 || sc->peer_ciphers == NULL
3191 clntsk = sc->peer_ciphers;
3192 srvrsk = SSL_get_ciphers(s);
3193 if (clntsk == NULL || srvrsk == NULL)
3196 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
3199 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
3202 c = sk_SSL_CIPHER_value(clntsk, i);
3203 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
3206 n = strlen(c->name);
3223 * Return the requested servername (SNI) value. Note that the behaviour varies
3225 * - whether this is called by the client or the server,
3226 * - if we are before or during/after the handshake,
3227 * - if a resumption or normal handshake is being attempted/has occurred
3228 * - whether we have negotiated TLSv1.2 (or below) or TLSv1.3
3230 * Note that only the host_name type is defined (RFC 3546).
3232 const char *SSL_get_servername(const SSL *s, const int type)
3234 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3241 * If we don't know if we are the client or the server yet then we assume
3244 server = sc->handshake_func == NULL ? 0 : sc->server;
3246 if (type != TLSEXT_NAMETYPE_host_name)
3252 * In TLSv1.3 on the server SNI is not associated with the session
3253 * but in TLSv1.2 or below it is.
3255 * Before the handshake:
3258 * During/after the handshake (TLSv1.2 or below resumption occurred):
3259 * - If a servername was accepted by the server in the original
3260 * handshake then it will return that servername, or NULL otherwise.
3262 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3263 * - The function will return the servername requested by the client in
3264 * this handshake or NULL if none was requested.
3266 if (sc->hit && !SSL_CONNECTION_IS_TLS13(sc))
3267 return sc->session->ext.hostname;
3272 * Before the handshake:
3273 * - If a servername has been set via a call to
3274 * SSL_set_tlsext_host_name() then it will return that servername
3275 * - If one has not been set, but a TLSv1.2 resumption is being
3276 * attempted and the session from the original handshake had a
3277 * servername accepted by the server then it will return that
3279 * - Otherwise it returns NULL
3281 * During/after the handshake (TLSv1.2 or below resumption occurred):
3282 * - If the session from the original handshake had a servername accepted
3283 * by the server then it will return that servername.
3284 * - Otherwise it returns the servername set via
3285 * SSL_set_tlsext_host_name() (or NULL if it was not called).
3287 * During/after the handshake (TLSv1.2 or below resumption did not occur):
3288 * - It will return the servername set via SSL_set_tlsext_host_name()
3289 * (or NULL if it was not called).
3291 if (SSL_in_before(s)) {
3292 if (sc->ext.hostname == NULL
3293 && sc->session != NULL
3294 && sc->session->ssl_version != TLS1_3_VERSION)
3295 return sc->session->ext.hostname;
3297 if (!SSL_CONNECTION_IS_TLS13(sc) && sc->hit
3298 && sc->session->ext.hostname != NULL)
3299 return sc->session->ext.hostname;
3303 return sc->ext.hostname;
3306 int SSL_get_servername_type(const SSL *s)
3308 if (SSL_get_servername(s, TLSEXT_NAMETYPE_host_name) != NULL)
3309 return TLSEXT_NAMETYPE_host_name;
3314 * SSL_select_next_proto implements the standard protocol selection. It is
3315 * expected that this function is called from the callback set by
3316 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
3317 * vector of 8-bit, length prefixed byte strings. The length byte itself is
3318 * not included in the length. A byte string of length 0 is invalid. No byte
3319 * string may be truncated. The current, but experimental algorithm for
3320 * selecting the protocol is: 1) If the server doesn't support NPN then this
3321 * is indicated to the callback. In this case, the client application has to
3322 * abort the connection or have a default application level protocol. 2) If
3323 * the server supports NPN, but advertises an empty list then the client
3324 * selects the first protocol in its list, but indicates via the API that this
3325 * fallback case was enacted. 3) Otherwise, the client finds the first
3326 * protocol in the server's list that it supports and selects this protocol.
3327 * This is because it's assumed that the server has better information about
3328 * which protocol a client should use. 4) If the client doesn't support any
3329 * of the server's advertised protocols, then this is treated the same as
3330 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
3331 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
3333 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
3334 const unsigned char *server,
3335 unsigned int server_len,
3336 const unsigned char *client, unsigned int client_len)
3339 const unsigned char *result;
3340 int status = OPENSSL_NPN_UNSUPPORTED;
3343 * For each protocol in server preference order, see if we support it.
3345 for (i = 0; i < server_len;) {
3346 for (j = 0; j < client_len;) {
3347 if (server[i] == client[j] &&
3348 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
3349 /* We found a match */
3350 result = &server[i];
3351 status = OPENSSL_NPN_NEGOTIATED;
3361 /* There's no overlap between our protocols and the server's list. */
3363 status = OPENSSL_NPN_NO_OVERLAP;
3366 *out = (unsigned char *)result + 1;
3367 *outlen = result[0];
3371 #ifndef OPENSSL_NO_NEXTPROTONEG
3373 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
3374 * client's requested protocol for this connection and returns 0. If the
3375 * client didn't request any protocol, then *data is set to NULL. Note that
3376 * the client can request any protocol it chooses. The value returned from
3377 * this function need not be a member of the list of supported protocols
3378 * provided by the callback.
3380 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
3383 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
3386 /* We have no other way to indicate error */
3392 *data = sc->ext.npn;
3393 if (*data == NULL) {
3396 *len = (unsigned int)sc->ext.npn_len;
3401 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
3402 * a TLS server needs a list of supported protocols for Next Protocol
3403 * Negotiation. The returned list must be in wire format. The list is
3404 * returned by setting |out| to point to it and |outlen| to its length. This
3405 * memory will not be modified, but one should assume that the SSL* keeps a
3406 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
3407 * wishes to advertise. Otherwise, no such extension will be included in the
3410 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
3411 SSL_CTX_npn_advertised_cb_func cb,
3414 ctx->ext.npn_advertised_cb = cb;
3415 ctx->ext.npn_advertised_cb_arg = arg;
3419 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
3420 * client needs to select a protocol from the server's provided list. |out|
3421 * must be set to point to the selected protocol (which may be within |in|).
3422 * The length of the protocol name must be written into |outlen|. The
3423 * server's advertised protocols are provided in |in| and |inlen|. The
3424 * callback can assume that |in| is syntactically valid. The client must
3425 * select a protocol. It is fatal to the connection if this callback returns
3426 * a value other than SSL_TLSEXT_ERR_OK.
3428 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
3429 SSL_CTX_npn_select_cb_func cb,
3432 ctx->ext.npn_select_cb = cb;
3433 ctx->ext.npn_select_cb_arg = arg;
3437 static int alpn_value_ok(const unsigned char *protos, unsigned int protos_len)
3441 if (protos_len < 2 || protos == NULL)
3444 for (idx = 0; idx < protos_len; idx += protos[idx] + 1) {
3445 if (protos[idx] == 0)
3448 return idx == protos_len;
3451 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
3452 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3453 * length-prefixed strings). Returns 0 on success.
3455 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
3456 unsigned int protos_len)
3458 unsigned char *alpn;
3460 if (protos_len == 0 || protos == NULL) {
3461 OPENSSL_free(ctx->ext.alpn);
3462 ctx->ext.alpn = NULL;
3463 ctx->ext.alpn_len = 0;
3466 /* Not valid per RFC */
3467 if (!alpn_value_ok(protos, protos_len))
3470 alpn = OPENSSL_memdup(protos, protos_len);
3472 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3475 OPENSSL_free(ctx->ext.alpn);
3476 ctx->ext.alpn = alpn;
3477 ctx->ext.alpn_len = protos_len;
3483 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
3484 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
3485 * length-prefixed strings). Returns 0 on success.
3487 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
3488 unsigned int protos_len)
3490 unsigned char *alpn;
3491 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
3496 if (protos_len == 0 || protos == NULL) {
3497 OPENSSL_free(sc->ext.alpn);
3498 sc->ext.alpn = NULL;
3499 sc->ext.alpn_len = 0;
3502 /* Not valid per RFC */
3503 if (!alpn_value_ok(protos, protos_len))
3506 alpn = OPENSSL_memdup(protos, protos_len);
3508 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3511 OPENSSL_free(sc->ext.alpn);
3512 sc->ext.alpn = alpn;
3513 sc->ext.alpn_len = protos_len;
3519 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
3520 * called during ClientHello processing in order to select an ALPN protocol
3521 * from the client's list of offered protocols.
3523 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
3524 SSL_CTX_alpn_select_cb_func cb,
3527 ctx->ext.alpn_select_cb = cb;
3528 ctx->ext.alpn_select_cb_arg = arg;
3532 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
3533 * On return it sets |*data| to point to |*len| bytes of protocol name
3534 * (not including the leading length-prefix byte). If the server didn't
3535 * respond with a negotiated protocol then |*len| will be zero.
3537 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
3540 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
3543 /* We have no other way to indicate error */
3549 *data = sc->s3.alpn_selected;
3553 *len = (unsigned int)sc->s3.alpn_selected_len;
3556 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
3557 const char *label, size_t llen,
3558 const unsigned char *context, size_t contextlen,
3561 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3566 if (sc->session == NULL
3567 || (sc->version < TLS1_VERSION && sc->version != DTLS1_BAD_VER))
3570 return s->method->ssl3_enc->export_keying_material(sc, out, olen, label,
3572 contextlen, use_context);
3575 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
3576 const char *label, size_t llen,
3577 const unsigned char *context,
3580 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3585 if (sc->version != TLS1_3_VERSION)
3588 return tls13_export_keying_material_early(sc, out, olen, label, llen,
3589 context, contextlen);
3592 static unsigned long ssl_session_hash(const SSL_SESSION *a)
3594 const unsigned char *session_id = a->session_id;
3596 unsigned char tmp_storage[4];
3598 if (a->session_id_length < sizeof(tmp_storage)) {
3599 memset(tmp_storage, 0, sizeof(tmp_storage));
3600 memcpy(tmp_storage, a->session_id, a->session_id_length);
3601 session_id = tmp_storage;
3605 ((unsigned long)session_id[0]) |
3606 ((unsigned long)session_id[1] << 8L) |
3607 ((unsigned long)session_id[2] << 16L) |
3608 ((unsigned long)session_id[3] << 24L);
3613 * NB: If this function (or indeed the hash function which uses a sort of
3614 * coarser function than this one) is changed, ensure
3615 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3616 * being able to construct an SSL_SESSION that will collide with any existing
3617 * session with a matching session ID.
3619 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3621 if (a->ssl_version != b->ssl_version)
3623 if (a->session_id_length != b->session_id_length)
3625 return memcmp(a->session_id, b->session_id, a->session_id_length);
3629 * These wrapper functions should remain rather than redeclaring
3630 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3631 * variable. The reason is that the functions aren't static, they're exposed
3635 SSL_CTX *SSL_CTX_new_ex(OSSL_LIB_CTX *libctx, const char *propq,
3636 const SSL_METHOD *meth)
3638 SSL_CTX *ret = NULL;
3641 ERR_raise(ERR_LIB_SSL, SSL_R_NULL_SSL_METHOD_PASSED);
3645 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3648 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3649 ERR_raise(ERR_LIB_SSL, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3652 ret = OPENSSL_zalloc(sizeof(*ret));
3656 /* Init the reference counting before any call to SSL_CTX_free */
3657 ret->references = 1;
3658 ret->lock = CRYPTO_THREAD_lock_new();
3659 if (ret->lock == NULL) {
3660 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3665 #ifdef TSAN_REQUIRES_LOCKING
3666 ret->tsan_lock = CRYPTO_THREAD_lock_new();
3667 if (ret->tsan_lock == NULL) {
3668 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3673 ret->libctx = libctx;
3674 if (propq != NULL) {
3675 ret->propq = OPENSSL_strdup(propq);
3676 if (ret->propq == NULL)
3681 ret->min_proto_version = 0;
3682 ret->max_proto_version = 0;
3683 ret->mode = SSL_MODE_AUTO_RETRY;
3684 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3685 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3686 /* We take the system default. */
3687 ret->session_timeout = meth->get_timeout();
3688 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3689 ret->verify_mode = SSL_VERIFY_NONE;
3690 if ((ret->cert = ssl_cert_new()) == NULL)
3693 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3694 if (ret->sessions == NULL)
3696 ret->cert_store = X509_STORE_new();
3697 if (ret->cert_store == NULL)
3699 #ifndef OPENSSL_NO_CT
3700 ret->ctlog_store = CTLOG_STORE_new_ex(libctx, propq);
3701 if (ret->ctlog_store == NULL)
3705 /* initialize cipher/digest methods table */
3706 if (!ssl_load_ciphers(ret))
3708 /* initialise sig algs */
3709 if (!ssl_setup_sig_algs(ret))
3713 if (!ssl_load_groups(ret))
3716 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3719 if (!ssl_create_cipher_list(ret,
3720 ret->tls13_ciphersuites,
3721 &ret->cipher_list, &ret->cipher_list_by_id,
3722 OSSL_default_cipher_list(), ret->cert)
3723 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3724 ERR_raise(ERR_LIB_SSL, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3728 ret->param = X509_VERIFY_PARAM_new();
3729 if (ret->param == NULL)
3733 * If these aren't available from the provider we'll get NULL returns.
3734 * That's fine but will cause errors later if SSLv3 is negotiated
3736 ret->md5 = ssl_evp_md_fetch(libctx, NID_md5, propq);
3737 ret->sha1 = ssl_evp_md_fetch(libctx, NID_sha1, propq);
3739 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3742 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3745 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3748 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3751 /* No compression for DTLS */
3752 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3753 ret->comp_methods = SSL_COMP_get_compression_methods();
3755 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3756 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3758 /* Setup RFC5077 ticket keys */
3759 if ((RAND_bytes_ex(libctx, ret->ext.tick_key_name,
3760 sizeof(ret->ext.tick_key_name), 0) <= 0)
3761 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_hmac_key,
3762 sizeof(ret->ext.secure->tick_hmac_key), 0) <= 0)
3763 || (RAND_priv_bytes_ex(libctx, ret->ext.secure->tick_aes_key,
3764 sizeof(ret->ext.secure->tick_aes_key), 0) <= 0))
3765 ret->options |= SSL_OP_NO_TICKET;
3767 if (RAND_priv_bytes_ex(libctx, ret->ext.cookie_hmac_key,
3768 sizeof(ret->ext.cookie_hmac_key), 0) <= 0)
3771 #ifndef OPENSSL_NO_SRP
3772 if (!ssl_ctx_srp_ctx_init_intern(ret))
3775 #ifndef OPENSSL_NO_ENGINE
3776 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3777 # define eng_strx(x) #x
3778 # define eng_str(x) eng_strx(x)
3779 /* Use specific client engine automatically... ignore errors */
3782 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3785 ENGINE_load_builtin_engines();
3786 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3788 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3794 * Disable compression by default to prevent CRIME. Applications can
3795 * re-enable compression by configuring
3796 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3797 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3798 * middlebox compatibility by default. This may be disabled by default in
3799 * a later OpenSSL version.
3801 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3803 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3806 * We cannot usefully set a default max_early_data here (which gets
3807 * propagated in SSL_new(), for the following reason: setting the
3808 * SSL field causes tls_construct_stoc_early_data() to tell the
3809 * client that early data will be accepted when constructing a TLS 1.3
3810 * session ticket, and the client will accordingly send us early data
3811 * when using that ticket (if the client has early data to send).
3812 * However, in order for the early data to actually be consumed by
3813 * the application, the application must also have calls to
3814 * SSL_read_early_data(); otherwise we'll just skip past the early data
3815 * and ignore it. So, since the application must add calls to
3816 * SSL_read_early_data(), we also require them to add
3817 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3818 * eliminating the bandwidth-wasting early data in the case described
3821 ret->max_early_data = 0;
3824 * Default recv_max_early_data is a fully loaded single record. Could be
3825 * split across multiple records in practice. We set this differently to
3826 * max_early_data so that, in the default case, we do not advertise any
3827 * support for early_data, but if a client were to send us some (e.g.
3828 * because of an old, stale ticket) then we will tolerate it and skip over
3831 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3833 /* By default we send two session tickets automatically in TLSv1.3 */
3834 ret->num_tickets = 2;
3836 ssl_ctx_system_config(ret);
3840 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
3846 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3848 return SSL_CTX_new_ex(NULL, NULL, meth);
3851 int SSL_CTX_up_ref(SSL_CTX *ctx)
3855 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3858 REF_PRINT_COUNT("SSL_CTX", ctx);
3859 REF_ASSERT_ISNT(i < 2);
3860 return ((i > 1) ? 1 : 0);
3863 void SSL_CTX_free(SSL_CTX *a)
3871 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3872 REF_PRINT_COUNT("SSL_CTX", a);
3875 REF_ASSERT_ISNT(i < 0);
3877 X509_VERIFY_PARAM_free(a->param);
3878 dane_ctx_final(&a->dane);
3881 * Free internal session cache. However: the remove_cb() may reference
3882 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3883 * after the sessions were flushed.
3884 * As the ex_data handling routines might also touch the session cache,
3885 * the most secure solution seems to be: empty (flush) the cache, then
3886 * free ex_data, then finally free the cache.
3887 * (See ticket [openssl.org #212].)
3889 if (a->sessions != NULL)
3890 SSL_CTX_flush_sessions(a, 0);
3892 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3893 lh_SSL_SESSION_free(a->sessions);
3894 X509_STORE_free(a->cert_store);
3895 #ifndef OPENSSL_NO_CT
3896 CTLOG_STORE_free(a->ctlog_store);
3898 sk_SSL_CIPHER_free(a->cipher_list);
3899 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3900 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3901 ssl_cert_free(a->cert);
3902 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3903 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3904 OSSL_STACK_OF_X509_free(a->extra_certs);
3905 a->comp_methods = NULL;
3906 #ifndef OPENSSL_NO_SRTP
3907 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3909 #ifndef OPENSSL_NO_SRP
3910 ssl_ctx_srp_ctx_free_intern(a);
3912 #ifndef OPENSSL_NO_ENGINE
3913 tls_engine_finish(a->client_cert_engine);
3916 OPENSSL_free(a->ext.ecpointformats);
3917 OPENSSL_free(a->ext.supportedgroups);
3918 OPENSSL_free(a->ext.supported_groups_default);
3919 OPENSSL_free(a->ext.alpn);
3920 OPENSSL_secure_free(a->ext.secure);
3922 ssl_evp_md_free(a->md5);
3923 ssl_evp_md_free(a->sha1);
3925 for (j = 0; j < SSL_ENC_NUM_IDX; j++)
3926 ssl_evp_cipher_free(a->ssl_cipher_methods[j]);
3927 for (j = 0; j < SSL_MD_NUM_IDX; j++)
3928 ssl_evp_md_free(a->ssl_digest_methods[j]);
3929 for (j = 0; j < a->group_list_len; j++) {
3930 OPENSSL_free(a->group_list[j].tlsname);
3931 OPENSSL_free(a->group_list[j].realname);
3932 OPENSSL_free(a->group_list[j].algorithm);
3934 OPENSSL_free(a->group_list);
3936 OPENSSL_free(a->sigalg_lookup_cache);
3938 CRYPTO_THREAD_lock_free(a->lock);
3939 #ifdef TSAN_REQUIRES_LOCKING
3940 CRYPTO_THREAD_lock_free(a->tsan_lock);
3943 OPENSSL_free(a->propq);
3948 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3950 ctx->default_passwd_callback = cb;
3953 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3955 ctx->default_passwd_callback_userdata = u;
3958 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3960 return ctx->default_passwd_callback;
3963 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3965 return ctx->default_passwd_callback_userdata;
3968 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3970 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3975 sc->default_passwd_callback = cb;
3978 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3980 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3985 sc->default_passwd_callback_userdata = u;
3988 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3990 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
3995 return sc->default_passwd_callback;
3998 void *SSL_get_default_passwd_cb_userdata(SSL *s)
4000 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4005 return sc->default_passwd_callback_userdata;
4008 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
4009 int (*cb) (X509_STORE_CTX *, void *),
4012 ctx->app_verify_callback = cb;
4013 ctx->app_verify_arg = arg;
4016 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
4017 int (*cb) (int, X509_STORE_CTX *))
4019 ctx->verify_mode = mode;
4020 ctx->default_verify_callback = cb;
4023 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
4025 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
4028 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
4030 ssl_cert_set_cert_cb(c->cert, cb, arg);
4033 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
4035 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4040 ssl_cert_set_cert_cb(sc->cert, cb, arg);
4043 void ssl_set_masks(SSL_CONNECTION *s)
4046 uint32_t *pvalid = s->s3.tmp.valid_flags;
4047 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
4048 unsigned long mask_k, mask_a;
4049 int have_ecc_cert, ecdsa_ok;
4054 dh_tmp = (c->dh_tmp != NULL
4055 || c->dh_tmp_cb != NULL
4058 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4059 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
4060 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
4061 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
4065 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
4066 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
4068 #ifndef OPENSSL_NO_GOST
4069 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
4070 mask_k |= SSL_kGOST | SSL_kGOST18;
4071 mask_a |= SSL_aGOST12;
4073 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
4074 mask_k |= SSL_kGOST | SSL_kGOST18;
4075 mask_a |= SSL_aGOST12;
4077 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
4078 mask_k |= SSL_kGOST;
4079 mask_a |= SSL_aGOST01;
4090 * If we only have an RSA-PSS certificate allow RSA authentication
4091 * if TLS 1.2 and peer supports it.
4094 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
4095 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
4096 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION))
4103 mask_a |= SSL_aNULL;
4106 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
4107 * depending on the key usage extension.
4109 if (have_ecc_cert) {
4111 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
4112 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
4113 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
4116 mask_a |= SSL_aECDSA;
4118 /* Allow Ed25519 for TLS 1.2 if peer supports it */
4119 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
4120 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
4121 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4122 mask_a |= SSL_aECDSA;
4124 /* Allow Ed448 for TLS 1.2 if peer supports it */
4125 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
4126 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
4127 && TLS1_get_version(&s->ssl) == TLS1_2_VERSION)
4128 mask_a |= SSL_aECDSA;
4130 mask_k |= SSL_kECDHE;
4132 #ifndef OPENSSL_NO_PSK
4135 if (mask_k & SSL_kRSA)
4136 mask_k |= SSL_kRSAPSK;
4137 if (mask_k & SSL_kDHE)
4138 mask_k |= SSL_kDHEPSK;
4139 if (mask_k & SSL_kECDHE)
4140 mask_k |= SSL_kECDHEPSK;
4143 s->s3.tmp.mask_k = mask_k;
4144 s->s3.tmp.mask_a = mask_a;
4147 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL_CONNECTION *s)
4149 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
4150 /* key usage, if present, must allow signing */
4151 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
4152 ERR_raise(ERR_LIB_SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
4156 return 1; /* all checks are ok */
4159 int ssl_get_server_cert_serverinfo(SSL_CONNECTION *s,
4160 const unsigned char **serverinfo,
4161 size_t *serverinfo_length)
4163 CERT_PKEY *cpk = s->s3.tmp.cert;
4164 *serverinfo_length = 0;
4166 if (cpk == NULL || cpk->serverinfo == NULL)
4169 *serverinfo = cpk->serverinfo;
4170 *serverinfo_length = cpk->serverinfo_length;
4174 void ssl_update_cache(SSL_CONNECTION *s, int mode)
4179 * If the session_id_length is 0, we are not supposed to cache it, and it
4180 * would be rather hard to do anyway :-)
4182 if (s->session->session_id_length == 0)
4186 * If sid_ctx_length is 0 there is no specific application context
4187 * associated with this session, so when we try to resume it and
4188 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
4189 * indication that this is actually a session for the proper application
4190 * context, and the *handshake* will fail, not just the resumption attempt.
4191 * Do not cache (on the server) these sessions that are not resumable
4192 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
4194 if (s->server && s->session->sid_ctx_length == 0
4195 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
4198 i = s->session_ctx->session_cache_mode;
4200 && (!s->hit || SSL_CONNECTION_IS_TLS13(s))) {
4202 * Add the session to the internal cache. In server side TLSv1.3 we
4203 * normally don't do this because by default it's a full stateless ticket
4204 * with only a dummy session id so there is no reason to cache it,
4206 * - we are doing early_data, in which case we cache so that we can
4208 * - the application has set a remove_session_cb so needs to know about
4209 * session timeout events
4210 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
4212 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
4213 && (!SSL_CONNECTION_IS_TLS13(s)
4215 || (s->max_early_data > 0
4216 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
4217 || s->session_ctx->remove_session_cb != NULL
4218 || (s->options & SSL_OP_NO_TICKET) != 0))
4219 SSL_CTX_add_session(s->session_ctx, s->session);
4222 * Add the session to the external cache. We do this even in server side
4223 * TLSv1.3 without early data because some applications just want to
4224 * know about the creation of a session and aren't doing a full cache.
4226 if (s->session_ctx->new_session_cb != NULL) {
4227 SSL_SESSION_up_ref(s->session);
4228 if (!s->session_ctx->new_session_cb(SSL_CONNECTION_GET_SSL(s),
4230 SSL_SESSION_free(s->session);
4234 /* auto flush every 255 connections */
4235 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
4236 TSAN_QUALIFIER int *stat;
4238 if (mode & SSL_SESS_CACHE_CLIENT)
4239 stat = &s->session_ctx->stats.sess_connect_good;
4241 stat = &s->session_ctx->stats.sess_accept_good;
4242 if ((ssl_tsan_load(s->session_ctx, stat) & 0xff) == 0xff)
4243 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
4247 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
4252 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
4257 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
4260 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4262 /* TODO(QUIC): Do we want this for QUIC? */
4264 || (s->type != SSL_TYPE_SSL_CONNECTION && s->method != meth))
4267 if (s->method != meth) {
4268 const SSL_METHOD *sm = s->method;
4269 int (*hf) (SSL *) = sc->handshake_func;
4271 if (sm->version == meth->version)
4276 ret = s->method->ssl_init(s);
4279 if (hf == sm->ssl_connect)
4280 sc->handshake_func = meth->ssl_connect;
4281 else if (hf == sm->ssl_accept)
4282 sc->handshake_func = meth->ssl_accept;
4287 int SSL_get_error(const SSL *s, int i)
4292 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4295 return SSL_ERROR_NONE;
4297 /* TODO(QUIC): This will need more handling for QUIC_CONNECTIONs */
4299 return SSL_ERROR_SSL;
4302 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
4303 * where we do encode the error
4305 if ((l = ERR_peek_error()) != 0) {
4306 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
4307 return SSL_ERROR_SYSCALL;
4309 return SSL_ERROR_SSL;
4312 if (SSL_want_read(s)) {
4313 bio = SSL_get_rbio(s);
4314 if (BIO_should_read(bio))
4315 return SSL_ERROR_WANT_READ;
4316 else if (BIO_should_write(bio))
4318 * This one doesn't make too much sense ... We never try to write
4319 * to the rbio, and an application program where rbio and wbio
4320 * are separate couldn't even know what it should wait for.
4321 * However if we ever set s->rwstate incorrectly (so that we have
4322 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
4323 * wbio *are* the same, this test works around that bug; so it
4324 * might be safer to keep it.
4326 return SSL_ERROR_WANT_WRITE;
4327 else if (BIO_should_io_special(bio)) {
4328 reason = BIO_get_retry_reason(bio);
4329 if (reason == BIO_RR_CONNECT)
4330 return SSL_ERROR_WANT_CONNECT;
4331 else if (reason == BIO_RR_ACCEPT)
4332 return SSL_ERROR_WANT_ACCEPT;
4334 return SSL_ERROR_SYSCALL; /* unknown */
4338 if (SSL_want_write(s)) {
4339 /* Access wbio directly - in order to use the buffered bio if present */
4341 if (BIO_should_write(bio))
4342 return SSL_ERROR_WANT_WRITE;
4343 else if (BIO_should_read(bio))
4345 * See above (SSL_want_read(s) with BIO_should_write(bio))
4347 return SSL_ERROR_WANT_READ;
4348 else if (BIO_should_io_special(bio)) {
4349 reason = BIO_get_retry_reason(bio);
4350 if (reason == BIO_RR_CONNECT)
4351 return SSL_ERROR_WANT_CONNECT;
4352 else if (reason == BIO_RR_ACCEPT)
4353 return SSL_ERROR_WANT_ACCEPT;
4355 return SSL_ERROR_SYSCALL;
4358 if (SSL_want_x509_lookup(s))
4359 return SSL_ERROR_WANT_X509_LOOKUP;
4360 if (SSL_want_retry_verify(s))
4361 return SSL_ERROR_WANT_RETRY_VERIFY;
4362 if (SSL_want_async(s))
4363 return SSL_ERROR_WANT_ASYNC;
4364 if (SSL_want_async_job(s))
4365 return SSL_ERROR_WANT_ASYNC_JOB;
4366 if (SSL_want_client_hello_cb(s))
4367 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
4369 if ((sc->shutdown & SSL_RECEIVED_SHUTDOWN) &&
4370 (sc->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
4371 return SSL_ERROR_ZERO_RETURN;
4373 return SSL_ERROR_SYSCALL;
4376 static int ssl_do_handshake_intern(void *vargs)
4378 struct ssl_async_args *args = (struct ssl_async_args *)vargs;
4380 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4385 return sc->handshake_func(s);
4388 int SSL_do_handshake(SSL *s)
4391 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4393 /* TODO(QUIC): Special handling for QUIC will be needed */
4397 if (sc->handshake_func == NULL) {
4398 ERR_raise(ERR_LIB_SSL, SSL_R_CONNECTION_TYPE_NOT_SET);
4402 ossl_statem_check_finish_init(sc, -1);
4404 s->method->ssl_renegotiate_check(s, 0);
4406 if (SSL_in_init(s) || SSL_in_before(s)) {
4407 if ((sc->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
4408 struct ssl_async_args args;
4410 memset(&args, 0, sizeof(args));
4413 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
4415 ret = sc->handshake_func(s);
4421 void SSL_set_accept_state(SSL *s)
4423 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4425 /* TODO(QUIC): Special handling for QUIC will be needed */
4431 ossl_statem_clear(sc);
4432 sc->handshake_func = s->method->ssl_accept;
4436 void SSL_set_connect_state(SSL *s)
4438 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4440 /* TODO(QUIC): Special handling for QUIC will be needed */
4446 ossl_statem_clear(sc);
4447 sc->handshake_func = s->method->ssl_connect;
4451 int ssl_undefined_function(SSL *s)
4453 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4457 int ssl_undefined_void_function(void)
4459 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4463 int ssl_undefined_const_function(const SSL *s)
4468 const SSL_METHOD *ssl_bad_method(int ver)
4470 ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
4474 const char *ssl_protocol_to_string(int version)
4478 case TLS1_3_VERSION:
4481 case TLS1_2_VERSION:
4484 case TLS1_1_VERSION:
4499 case DTLS1_2_VERSION:
4507 const char *SSL_get_version(const SSL *s)
4509 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4511 /* TODO(QUIC): Should QUIC return QUIC or TLSv1.3? */
4515 return ssl_protocol_to_string(sc->version);
4518 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
4520 STACK_OF(X509_NAME) *sk;
4529 if ((sk = sk_X509_NAME_new_null()) == NULL)
4531 for (i = 0; i < sk_X509_NAME_num(src); i++) {
4532 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
4534 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4537 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
4539 sk_X509_NAME_pop_free(sk, X509_NAME_free);
4548 SSL *SSL_dup(SSL *s)
4552 /* TODO(QUIC): Add a SSL_METHOD function for duplication */
4553 SSL_CONNECTION *retsc;
4554 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4559 /* If we're not quiescent, just up_ref! */
4560 if (!SSL_in_init(s) || !SSL_in_before(s)) {
4561 CRYPTO_UP_REF(&s->references, &i, s->lock);
4566 * Otherwise, copy configuration state, and session if set.
4568 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
4570 if ((retsc = SSL_CONNECTION_FROM_SSL_ONLY(ret)) == NULL)
4573 if (sc->session != NULL) {
4575 * Arranges to share the same session via up_ref. This "copies"
4576 * session-id, SSL_METHOD, sid_ctx, and 'cert'
4578 if (!SSL_copy_session_id(ret, s))
4582 * No session has been established yet, so we have to expect that
4583 * s->cert or ret->cert will be changed later -- they should not both
4584 * point to the same object, and thus we can't use
4585 * SSL_copy_session_id.
4587 if (!SSL_set_ssl_method(ret, s->method))
4590 if (sc->cert != NULL) {
4591 ssl_cert_free(retsc->cert);
4592 retsc->cert = ssl_cert_dup(sc->cert);
4593 if (retsc->cert == NULL)
4597 if (!SSL_set_session_id_context(ret, sc->sid_ctx,
4598 (int)sc->sid_ctx_length))
4602 if (!ssl_dane_dup(retsc, sc))
4604 retsc->version = sc->version;
4605 retsc->options = sc->options;
4606 retsc->min_proto_version = sc->min_proto_version;
4607 retsc->max_proto_version = sc->max_proto_version;
4608 retsc->mode = sc->mode;
4609 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
4610 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
4611 retsc->msg_callback = sc->msg_callback;
4612 retsc->msg_callback_arg = sc->msg_callback_arg;
4613 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
4614 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
4615 retsc->generate_session_id = sc->generate_session_id;
4617 SSL_set_info_callback(ret, SSL_get_info_callback(s));
4619 /* copy app data, a little dangerous perhaps */
4620 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
4623 retsc->server = sc->server;
4624 if (sc->handshake_func) {
4626 SSL_set_accept_state(ret);
4628 SSL_set_connect_state(ret);
4630 retsc->shutdown = sc->shutdown;
4631 retsc->hit = sc->hit;
4633 retsc->default_passwd_callback = sc->default_passwd_callback;
4634 retsc->default_passwd_callback_userdata = sc->default_passwd_callback_userdata;
4636 X509_VERIFY_PARAM_inherit(retsc->param, sc->param);
4638 /* dup the cipher_list and cipher_list_by_id stacks */
4639 if (sc->cipher_list != NULL) {
4640 if ((retsc->cipher_list = sk_SSL_CIPHER_dup(sc->cipher_list)) == NULL)
4643 if (sc->cipher_list_by_id != NULL)
4644 if ((retsc->cipher_list_by_id = sk_SSL_CIPHER_dup(sc->cipher_list_by_id))
4648 /* Dup the client_CA list */
4649 if (!dup_ca_names(&retsc->ca_names, sc->ca_names)
4650 || !dup_ca_names(&retsc->client_ca_names, sc->client_ca_names))
4660 void ssl_clear_cipher_ctx(SSL_CONNECTION *s)
4662 if (s->enc_read_ctx != NULL) {
4663 EVP_CIPHER_CTX_free(s->enc_read_ctx);
4664 s->enc_read_ctx = NULL;
4666 if (s->enc_write_ctx != NULL) {
4667 EVP_CIPHER_CTX_free(s->enc_write_ctx);
4668 s->enc_write_ctx = NULL;
4670 #ifndef OPENSSL_NO_COMP
4671 COMP_CTX_free(s->expand);
4673 COMP_CTX_free(s->compress);
4678 X509 *SSL_get_certificate(const SSL *s)
4680 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
4685 if (sc->cert != NULL)
4686 return sc->cert->key->x509;
4691 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4693 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4698 if (sc->cert != NULL)
4699 return sc->cert->key->privatekey;
4704 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4706 if (ctx->cert != NULL)
4707 return ctx->cert->key->x509;
4712 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4714 if (ctx->cert != NULL)
4715 return ctx->cert->key->privatekey;
4720 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4722 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4727 if ((sc->session != NULL) && (sc->session->cipher != NULL))
4728 return sc->session->cipher;
4732 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4734 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4739 return sc->s3.tmp.new_cipher;
4742 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4744 #ifndef OPENSSL_NO_COMP
4745 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4750 return sc->compress ? COMP_CTX_get_method(sc->compress) : NULL;
4756 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4758 #ifndef OPENSSL_NO_COMP
4759 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4764 return sc->expand ? COMP_CTX_get_method(sc->expand) : NULL;
4770 int ssl_init_wbio_buffer(SSL_CONNECTION *s)
4774 if (s->bbio != NULL) {
4775 /* Already buffered. */
4779 bbio = BIO_new(BIO_f_buffer());
4780 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4782 ERR_raise(ERR_LIB_SSL, ERR_R_BUF_LIB);
4786 s->wbio = BIO_push(bbio, s->wbio);
4791 int ssl_free_wbio_buffer(SSL_CONNECTION *s)
4793 /* callers ensure s is never null */
4794 if (s->bbio == NULL)
4797 s->wbio = BIO_pop(s->wbio);
4804 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4806 ctx->quiet_shutdown = mode;
4809 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4811 return ctx->quiet_shutdown;
4814 void SSL_set_quiet_shutdown(SSL *s, int mode)
4816 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4818 /* TODO(QUIC): Do we want this for QUIC? */
4822 sc->quiet_shutdown = mode;
4825 int SSL_get_quiet_shutdown(const SSL *s)
4827 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4829 /* TODO(QUIC): Do we want this for QUIC? */
4833 return sc->quiet_shutdown;
4836 void SSL_set_shutdown(SSL *s, int mode)
4838 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(s);
4840 /* TODO(QUIC): Do we want this for QUIC? */
4844 sc->shutdown = mode;
4847 int SSL_get_shutdown(const SSL *s)
4849 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL_ONLY(s);
4851 /* TODO(QUIC): Do we want this for QUIC? */
4855 return sc->shutdown;
4858 int SSL_version(const SSL *s)
4860 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4862 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4869 int SSL_client_version(const SSL *s)
4871 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
4873 /* TODO(QUIC): Do we want to report QUIC version this way instead? */
4877 return sc->client_version;
4880 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4885 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4888 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL_ONLY(ssl);
4890 /* TODO(QUIC): Do we need this for QUIC support? */
4894 if (ssl->ctx == ctx)
4897 ctx = sc->session_ctx;
4898 new_cert = ssl_cert_dup(ctx->cert);
4899 if (new_cert == NULL) {
4903 if (!custom_exts_copy_flags(&new_cert->custext, &sc->cert->custext)) {
4904 ssl_cert_free(new_cert);
4908 ssl_cert_free(sc->cert);
4909 sc->cert = new_cert;
4912 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4913 * so setter APIs must prevent invalid lengths from entering the system.
4915 if (!ossl_assert(sc->sid_ctx_length <= sizeof(sc->sid_ctx)))
4919 * If the session ID context matches that of the parent SSL_CTX,
4920 * inherit it from the new SSL_CTX as well. If however the context does
4921 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4922 * leave it unchanged.
4924 if ((ssl->ctx != NULL) &&
4925 (sc->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4926 (memcmp(sc->sid_ctx, ssl->ctx->sid_ctx, sc->sid_ctx_length) == 0)) {
4927 sc->sid_ctx_length = ctx->sid_ctx_length;
4928 memcpy(&sc->sid_ctx, &ctx->sid_ctx, sizeof(sc->sid_ctx));
4931 SSL_CTX_up_ref(ctx);
4932 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4938 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4940 return X509_STORE_set_default_paths_ex(ctx->cert_store, ctx->libctx,
4944 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4946 X509_LOOKUP *lookup;
4948 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4952 /* We ignore errors, in case the directory doesn't exist */
4955 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4962 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4964 X509_LOOKUP *lookup;
4966 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4970 /* We ignore errors, in case the file doesn't exist */
4973 X509_LOOKUP_load_file_ex(lookup, NULL, X509_FILETYPE_DEFAULT, ctx->libctx,
4981 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4983 X509_LOOKUP *lookup;
4985 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4989 /* We ignore errors, in case the directory doesn't exist */
4992 X509_LOOKUP_add_store_ex(lookup, NULL, ctx->libctx, ctx->propq);
4999 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
5001 return X509_STORE_load_file_ex(ctx->cert_store, CAfile, ctx->libctx,
5005 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
5007 return X509_STORE_load_path(ctx->cert_store, CApath);
5010 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
5012 return X509_STORE_load_store_ex(ctx->cert_store, CAstore, ctx->libctx,
5016 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
5019 if (CAfile == NULL && CApath == NULL)
5021 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
5023 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
5028 void SSL_set_info_callback(SSL *ssl,
5029 void (*cb) (const SSL *ssl, int type, int val))
5031 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5036 sc->info_callback = cb;
5040 * One compiler (Diab DCC) doesn't like argument names in returned function
5043 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
5046 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5051 return sc->info_callback;
5054 void SSL_set_verify_result(SSL *ssl, long arg)
5056 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5061 sc->verify_result = arg;
5064 long SSL_get_verify_result(const SSL *ssl)
5066 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5071 return sc->verify_result;
5074 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
5076 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5082 return sizeof(sc->s3.client_random);
5083 if (outlen > sizeof(sc->s3.client_random))
5084 outlen = sizeof(sc->s3.client_random);
5085 memcpy(out, sc->s3.client_random, outlen);
5089 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
5091 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5097 return sizeof(sc->s3.server_random);
5098 if (outlen > sizeof(sc->s3.server_random))
5099 outlen = sizeof(sc->s3.server_random);
5100 memcpy(out, sc->s3.server_random, outlen);
5104 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
5105 unsigned char *out, size_t outlen)
5108 return session->master_key_length;
5109 if (outlen > session->master_key_length)
5110 outlen = session->master_key_length;
5111 memcpy(out, session->master_key, outlen);
5115 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
5118 if (len > sizeof(sess->master_key))
5121 memcpy(sess->master_key, in, len);
5122 sess->master_key_length = len;
5127 int SSL_set_ex_data(SSL *s, int idx, void *arg)
5129 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5132 void *SSL_get_ex_data(const SSL *s, int idx)
5134 return CRYPTO_get_ex_data(&s->ex_data, idx);
5137 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
5139 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
5142 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
5144 return CRYPTO_get_ex_data(&s->ex_data, idx);
5147 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
5149 return ctx->cert_store;
5152 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
5154 X509_STORE_free(ctx->cert_store);
5155 ctx->cert_store = store;
5158 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
5161 X509_STORE_up_ref(store);
5162 SSL_CTX_set_cert_store(ctx, store);
5165 int SSL_want(const SSL *s)
5167 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5175 #ifndef OPENSSL_NO_PSK
5176 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
5178 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5179 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5182 OPENSSL_free(ctx->cert->psk_identity_hint);
5183 if (identity_hint != NULL) {
5184 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5185 if (ctx->cert->psk_identity_hint == NULL)
5188 ctx->cert->psk_identity_hint = NULL;
5192 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
5194 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5199 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
5200 ERR_raise(ERR_LIB_SSL, SSL_R_DATA_LENGTH_TOO_LONG);
5203 OPENSSL_free(sc->cert->psk_identity_hint);
5204 if (identity_hint != NULL) {
5205 sc->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
5206 if (sc->cert->psk_identity_hint == NULL)
5209 sc->cert->psk_identity_hint = NULL;
5213 const char *SSL_get_psk_identity_hint(const SSL *s)
5215 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5217 if (sc == NULL || sc->session == NULL)
5220 return sc->session->psk_identity_hint;
5223 const char *SSL_get_psk_identity(const SSL *s)
5225 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5227 if (sc == NULL || sc->session == NULL)
5230 return sc->session->psk_identity;
5233 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
5235 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5240 sc->psk_client_callback = cb;
5243 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
5245 ctx->psk_client_callback = cb;
5248 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
5250 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5255 sc->psk_server_callback = cb;
5258 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
5260 ctx->psk_server_callback = cb;
5264 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
5266 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5271 sc->psk_find_session_cb = cb;
5274 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
5275 SSL_psk_find_session_cb_func cb)
5277 ctx->psk_find_session_cb = cb;
5280 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
5282 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5287 sc->psk_use_session_cb = cb;
5290 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
5291 SSL_psk_use_session_cb_func cb)
5293 ctx->psk_use_session_cb = cb;
5296 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
5297 void (*cb) (int write_p, int version,
5298 int content_type, const void *buf,
5299 size_t len, SSL *ssl, void *arg))
5301 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5304 void SSL_set_msg_callback(SSL *ssl,
5305 void (*cb) (int write_p, int version,
5306 int content_type, const void *buf,
5307 size_t len, SSL *ssl, void *arg))
5309 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
5312 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
5313 int (*cb) (SSL *ssl,
5317 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5318 (void (*)(void))cb);
5321 void SSL_set_not_resumable_session_callback(SSL *ssl,
5322 int (*cb) (SSL *ssl,
5323 int is_forward_secure))
5325 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
5326 (void (*)(void))cb);
5329 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
5330 size_t (*cb) (SSL *ssl, int type,
5331 size_t len, void *arg))
5333 ctx->record_padding_cb = cb;
5336 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
5338 ctx->record_padding_arg = arg;
5341 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
5343 return ctx->record_padding_arg;
5346 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
5348 /* block size of 0 or 1 is basically no padding */
5349 if (block_size == 1)
5350 ctx->block_padding = 0;
5351 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5352 ctx->block_padding = block_size;
5358 int SSL_set_record_padding_callback(SSL *ssl,
5359 size_t (*cb) (SSL *ssl, int type,
5360 size_t len, void *arg))
5363 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5368 b = SSL_get_wbio(ssl);
5369 if (b == NULL || !BIO_get_ktls_send(b)) {
5370 sc->record_padding_cb = cb;
5376 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
5378 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5383 sc->record_padding_arg = arg;
5386 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
5388 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
5393 return sc->record_padding_arg;
5396 int SSL_set_block_padding(SSL *ssl, size_t block_size)
5398 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
5403 /* block size of 0 or 1 is basically no padding */
5404 if (block_size == 1)
5405 sc->block_padding = 0;
5406 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
5407 sc->block_padding = block_size;
5413 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
5415 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5420 sc->num_tickets = num_tickets;
5425 size_t SSL_get_num_tickets(const SSL *s)
5427 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5432 return sc->num_tickets;
5435 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
5437 ctx->num_tickets = num_tickets;
5442 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
5444 return ctx->num_tickets;
5448 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
5449 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
5450 * If EVP_MD pointer is passed, initializes ctx with this |md|.
5451 * Returns the newly allocated ctx;
5454 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
5456 ssl_clear_hash_ctx(hash);
5457 *hash = EVP_MD_CTX_new();
5458 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
5459 EVP_MD_CTX_free(*hash);
5466 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
5469 EVP_MD_CTX_free(*hash);
5473 /* Retrieve handshake hashes */
5474 int ssl_handshake_hash(SSL_CONNECTION *s,
5475 unsigned char *out, size_t outlen,
5478 EVP_MD_CTX *ctx = NULL;
5479 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
5480 int hashleni = EVP_MD_CTX_get_size(hdgst);
5483 if (hashleni < 0 || (size_t)hashleni > outlen) {
5484 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5488 ctx = EVP_MD_CTX_new();
5490 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5494 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
5495 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
5496 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
5500 *hashlen = hashleni;
5504 EVP_MD_CTX_free(ctx);
5508 int SSL_session_reused(const SSL *s)
5510 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5518 int SSL_is_server(const SSL *s)
5520 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5528 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
5529 void SSL_set_debug(SSL *s, int debug)
5531 /* Old function was do-nothing anyway... */
5537 void SSL_set_security_level(SSL *s, int level)
5539 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5544 sc->cert->sec_level = level;
5547 int SSL_get_security_level(const SSL *s)
5549 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5554 return sc->cert->sec_level;
5557 void SSL_set_security_callback(SSL *s,
5558 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5559 int op, int bits, int nid,
5560 void *other, void *ex))
5562 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5567 sc->cert->sec_cb = cb;
5570 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
5571 const SSL_CTX *ctx, int op,
5572 int bits, int nid, void *other,
5574 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5579 return sc->cert->sec_cb;
5582 void SSL_set0_security_ex_data(SSL *s, void *ex)
5584 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5589 sc->cert->sec_ex = ex;
5592 void *SSL_get0_security_ex_data(const SSL *s)
5594 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5599 return sc->cert->sec_ex;
5602 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
5604 ctx->cert->sec_level = level;
5607 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
5609 return ctx->cert->sec_level;
5612 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
5613 int (*cb) (const SSL *s, const SSL_CTX *ctx,
5614 int op, int bits, int nid,
5615 void *other, void *ex))
5617 ctx->cert->sec_cb = cb;
5620 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
5626 return ctx->cert->sec_cb;
5629 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
5631 ctx->cert->sec_ex = ex;
5634 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
5636 return ctx->cert->sec_ex;
5639 uint64_t SSL_CTX_get_options(const SSL_CTX *ctx)
5641 return ctx->options;
5644 uint64_t SSL_get_options(const SSL *s)
5646 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5654 uint64_t SSL_CTX_set_options(SSL_CTX *ctx, uint64_t op)
5656 return ctx->options |= op;
5659 uint64_t SSL_set_options(SSL *s, uint64_t op)
5661 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5666 return sc->options |= op;
5669 uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op)
5671 return ctx->options &= ~op;
5674 uint64_t SSL_clear_options(SSL *s, uint64_t op)
5676 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5681 return sc->options &= ~op;
5684 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
5686 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5691 return sc->verified_chain;
5694 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
5696 #ifndef OPENSSL_NO_CT
5699 * Moves SCTs from the |src| stack to the |dst| stack.
5700 * The source of each SCT will be set to |origin|.
5701 * If |dst| points to a NULL pointer, a new stack will be created and owned by
5703 * Returns the number of SCTs moved, or a negative integer if an error occurs.
5705 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
5706 sct_source_t origin)
5712 *dst = sk_SCT_new_null();
5714 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
5719 while ((sct = sk_SCT_pop(src)) != NULL) {
5720 if (SCT_set_source(sct, origin) != 1)
5723 if (sk_SCT_push(*dst, sct) <= 0)
5731 sk_SCT_push(src, sct); /* Put the SCT back */
5736 * Look for data collected during ServerHello and parse if found.
5737 * Returns the number of SCTs extracted.
5739 static int ct_extract_tls_extension_scts(SSL_CONNECTION *s)
5741 int scts_extracted = 0;
5743 if (s->ext.scts != NULL) {
5744 const unsigned char *p = s->ext.scts;
5745 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
5747 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
5749 SCT_LIST_free(scts);
5752 return scts_extracted;
5756 * Checks for an OCSP response and then attempts to extract any SCTs found if it
5757 * contains an SCT X509 extension. They will be stored in |s->scts|.
5759 * - The number of SCTs extracted, assuming an OCSP response exists.
5760 * - 0 if no OCSP response exists or it contains no SCTs.
5761 * - A negative integer if an error occurs.
5763 static int ct_extract_ocsp_response_scts(SSL_CONNECTION *s)
5765 # ifndef OPENSSL_NO_OCSP
5766 int scts_extracted = 0;
5767 const unsigned char *p;
5768 OCSP_BASICRESP *br = NULL;
5769 OCSP_RESPONSE *rsp = NULL;
5770 STACK_OF(SCT) *scts = NULL;
5773 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
5776 p = s->ext.ocsp.resp;
5777 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
5781 br = OCSP_response_get1_basic(rsp);
5785 for (i = 0; i < OCSP_resp_count(br); ++i) {
5786 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
5792 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
5794 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
5795 if (scts_extracted < 0)
5799 SCT_LIST_free(scts);
5800 OCSP_BASICRESP_free(br);
5801 OCSP_RESPONSE_free(rsp);
5802 return scts_extracted;
5804 /* Behave as if no OCSP response exists */
5810 * Attempts to extract SCTs from the peer certificate.
5811 * Return the number of SCTs extracted, or a negative integer if an error
5814 static int ct_extract_x509v3_extension_scts(SSL_CONNECTION *s)
5816 int scts_extracted = 0;
5817 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5820 STACK_OF(SCT) *scts =
5821 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
5824 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
5826 SCT_LIST_free(scts);
5829 return scts_extracted;
5833 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
5834 * response (if it exists) and X509v3 extensions in the certificate.
5835 * Returns NULL if an error occurs.
5837 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
5839 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5844 if (!sc->scts_parsed) {
5845 if (ct_extract_tls_extension_scts(sc) < 0 ||
5846 ct_extract_ocsp_response_scts(sc) < 0 ||
5847 ct_extract_x509v3_extension_scts(sc) < 0)
5850 sc->scts_parsed = 1;
5857 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
5858 const STACK_OF(SCT) *scts, void *unused_arg)
5863 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
5864 const STACK_OF(SCT) *scts, void *unused_arg)
5866 int count = scts != NULL ? sk_SCT_num(scts) : 0;
5869 for (i = 0; i < count; ++i) {
5870 SCT *sct = sk_SCT_value(scts, i);
5871 int status = SCT_get_validation_status(sct);
5873 if (status == SCT_VALIDATION_STATUS_VALID)
5876 ERR_raise(ERR_LIB_SSL, SSL_R_NO_VALID_SCTS);
5880 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
5883 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
5889 * Since code exists that uses the custom extension handler for CT, look
5890 * for this and throw an error if they have already registered to use CT.
5892 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
5893 TLSEXT_TYPE_signed_certificate_timestamp))
5895 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5899 if (callback != NULL) {
5901 * If we are validating CT, then we MUST accept SCTs served via OCSP
5903 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5907 sc->ct_validation_callback = callback;
5908 sc->ct_validation_callback_arg = arg;
5913 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5914 ssl_ct_validation_cb callback, void *arg)
5917 * Since code exists that uses the custom extension handler for CT, look for
5918 * this and throw an error if they have already registered to use CT.
5920 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5921 TLSEXT_TYPE_signed_certificate_timestamp))
5923 ERR_raise(ERR_LIB_SSL, SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5927 ctx->ct_validation_callback = callback;
5928 ctx->ct_validation_callback_arg = arg;
5932 int SSL_ct_is_enabled(const SSL *s)
5934 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
5939 return sc->ct_validation_callback != NULL;
5942 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5944 return ctx->ct_validation_callback != NULL;
5947 int ssl_validate_ct(SSL_CONNECTION *s)
5950 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5952 SSL_DANE *dane = &s->dane;
5953 CT_POLICY_EVAL_CTX *ctx = NULL;
5954 const STACK_OF(SCT) *scts;
5957 * If no callback is set, the peer is anonymous, or its chain is invalid,
5958 * skip SCT validation - just return success. Applications that continue
5959 * handshakes without certificates, with unverified chains, or pinned leaf
5960 * certificates are outside the scope of the WebPKI and CT.
5962 * The above exclusions notwithstanding the vast majority of peers will
5963 * have rather ordinary certificate chains validated by typical
5964 * applications that perform certificate verification and therefore will
5965 * process SCTs when enabled.
5967 if (s->ct_validation_callback == NULL || cert == NULL ||
5968 s->verify_result != X509_V_OK ||
5969 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5973 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5974 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5976 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5977 switch (dane->mtlsa->usage) {
5978 case DANETLS_USAGE_DANE_TA:
5979 case DANETLS_USAGE_DANE_EE:
5984 ctx = CT_POLICY_EVAL_CTX_new_ex(SSL_CONNECTION_GET_CTX(s)->libctx,
5985 SSL_CONNECTION_GET_CTX(s)->propq);
5987 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
5991 issuer = sk_X509_value(s->verified_chain, 1);
5992 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5993 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5994 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx,
5995 SSL_CONNECTION_GET_CTX(s)->ctlog_store);
5996 CT_POLICY_EVAL_CTX_set_time(
5997 ctx, (uint64_t)SSL_SESSION_get_time(s->session) * 1000);
5999 scts = SSL_get0_peer_scts(SSL_CONNECTION_GET_SSL(s));
6002 * This function returns success (> 0) only when all the SCTs are valid, 0
6003 * when some are invalid, and < 0 on various internal errors (out of
6004 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
6005 * reason to abort the handshake, that decision is up to the callback.
6006 * Therefore, we error out only in the unexpected case that the return
6007 * value is negative.
6009 * XXX: One might well argue that the return value of this function is an
6010 * unfortunate design choice. Its job is only to determine the validation
6011 * status of each of the provided SCTs. So long as it correctly separates
6012 * the wheat from the chaff it should return success. Failure in this case
6013 * ought to correspond to an inability to carry out its duties.
6015 if (SCT_LIST_validate(scts, ctx) < 0) {
6016 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_SCT_VERIFICATION_FAILED);
6020 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
6022 ret = 0; /* This function returns 0 on failure */
6024 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_R_CALLBACK_FAILED);
6027 CT_POLICY_EVAL_CTX_free(ctx);
6029 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
6030 * failure return code here. Also the application may wish the complete
6031 * the handshake, and then disconnect cleanly at a higher layer, after
6032 * checking the verification status of the completed connection.
6034 * We therefore force a certificate verification failure which will be
6035 * visible via SSL_get_verify_result() and cached as part of any resumed
6038 * Note: the permissive callback is for information gathering only, always
6039 * returns success, and does not affect verification status. Only the
6040 * strict callback or a custom application-specified callback can trigger
6041 * connection failure or record a verification error.
6044 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
6048 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
6050 switch (validation_mode) {
6052 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6054 case SSL_CT_VALIDATION_PERMISSIVE:
6055 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
6056 case SSL_CT_VALIDATION_STRICT:
6057 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
6061 int SSL_enable_ct(SSL *s, int validation_mode)
6063 switch (validation_mode) {
6065 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CT_VALIDATION_TYPE);
6067 case SSL_CT_VALIDATION_PERMISSIVE:
6068 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
6069 case SSL_CT_VALIDATION_STRICT:
6070 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
6074 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
6076 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
6079 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
6081 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
6084 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
6086 CTLOG_STORE_free(ctx->ctlog_store);
6087 ctx->ctlog_store = logs;
6090 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
6092 return ctx->ctlog_store;
6095 #endif /* OPENSSL_NO_CT */
6097 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
6100 c->client_hello_cb = cb;
6101 c->client_hello_cb_arg = arg;
6104 int SSL_client_hello_isv2(SSL *s)
6106 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6111 if (sc->clienthello == NULL)
6113 return sc->clienthello->isv2;
6116 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
6118 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6123 if (sc->clienthello == NULL)
6125 return sc->clienthello->legacy_version;
6128 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
6130 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6135 if (sc->clienthello == NULL)
6138 *out = sc->clienthello->random;
6139 return SSL3_RANDOM_SIZE;
6142 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
6144 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6149 if (sc->clienthello == NULL)
6152 *out = sc->clienthello->session_id;
6153 return sc->clienthello->session_id_len;
6156 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
6158 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6163 if (sc->clienthello == NULL)
6166 *out = PACKET_data(&sc->clienthello->ciphersuites);
6167 return PACKET_remaining(&sc->clienthello->ciphersuites);
6170 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
6172 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6177 if (sc->clienthello == NULL)
6180 *out = sc->clienthello->compressions;
6181 return sc->clienthello->compressions_len;
6184 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
6189 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6194 if (sc->clienthello == NULL || out == NULL || outlen == NULL)
6196 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6197 ext = sc->clienthello->pre_proc_exts + i;
6206 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
6207 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6210 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6211 ext = sc->clienthello->pre_proc_exts + i;
6213 if (ext->received_order >= num)
6215 present[ext->received_order] = ext->type;
6222 OPENSSL_free(present);
6226 int SSL_client_hello_get_extension_order(SSL *s, uint16_t *exts, size_t *num_exts)
6230 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6235 if (sc->clienthello == NULL || num_exts == NULL)
6237 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6238 ext = sc->clienthello->pre_proc_exts + i;
6250 if (*num_exts < num)
6252 for (i = 0; i < sc->clienthello->pre_proc_exts_len; i++) {
6253 ext = sc->clienthello->pre_proc_exts + i;
6255 if (ext->received_order >= num)
6257 exts[ext->received_order] = ext->type;
6264 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
6269 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6274 if (sc->clienthello == NULL)
6276 for (i = 0; i < sc->clienthello->pre_proc_exts_len; ++i) {
6277 r = sc->clienthello->pre_proc_exts + i;
6278 if (r->present && r->type == type) {
6280 *out = PACKET_data(&r->data);
6282 *outlen = PACKET_remaining(&r->data);
6289 int SSL_free_buffers(SSL *ssl)
6292 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6299 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
6302 RECORD_LAYER_release(rl);
6306 int SSL_alloc_buffers(SSL *ssl)
6308 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6313 return ssl3_setup_buffers(sc);
6316 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
6318 ctx->keylog_callback = cb;
6321 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
6323 return ctx->keylog_callback;
6326 static int nss_keylog_int(const char *prefix,
6328 const uint8_t *parameter_1,
6329 size_t parameter_1_len,
6330 const uint8_t *parameter_2,
6331 size_t parameter_2_len)
6334 char *cursor = NULL;
6338 SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(sc);
6340 if (sctx->keylog_callback == NULL)
6344 * Our output buffer will contain the following strings, rendered with
6345 * space characters in between, terminated by a NULL character: first the
6346 * prefix, then the first parameter, then the second parameter. The
6347 * meaning of each parameter depends on the specific key material being
6348 * logged. Note that the first and second parameters are encoded in
6349 * hexadecimal, so we need a buffer that is twice their lengths.
6351 prefix_len = strlen(prefix);
6352 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
6353 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
6354 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6358 strcpy(cursor, prefix);
6359 cursor += prefix_len;
6362 for (i = 0; i < parameter_1_len; i++) {
6363 sprintf(cursor, "%02x", parameter_1[i]);
6368 for (i = 0; i < parameter_2_len; i++) {
6369 sprintf(cursor, "%02x", parameter_2[i]);
6374 sctx->keylog_callback(SSL_CONNECTION_GET_SSL(sc), (const char *)out);
6375 OPENSSL_clear_free(out, out_len);
6380 int ssl_log_rsa_client_key_exchange(SSL_CONNECTION *sc,
6381 const uint8_t *encrypted_premaster,
6382 size_t encrypted_premaster_len,
6383 const uint8_t *premaster,
6384 size_t premaster_len)
6386 if (encrypted_premaster_len < 8) {
6387 SSLfatal(sc, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6391 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
6392 return nss_keylog_int("RSA",
6394 encrypted_premaster,
6400 int ssl_log_secret(SSL_CONNECTION *sc,
6402 const uint8_t *secret,
6405 return nss_keylog_int(label,
6407 sc->s3.client_random,
6413 #define SSLV2_CIPHER_LEN 3
6415 int ssl_cache_cipherlist(SSL_CONNECTION *s, PACKET *cipher_suites, int sslv2format)
6419 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6421 if (PACKET_remaining(cipher_suites) == 0) {
6422 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6426 if (PACKET_remaining(cipher_suites) % n != 0) {
6427 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6431 OPENSSL_free(s->s3.tmp.ciphers_raw);
6432 s->s3.tmp.ciphers_raw = NULL;
6433 s->s3.tmp.ciphers_rawlen = 0;
6436 size_t numciphers = PACKET_remaining(cipher_suites) / n;
6437 PACKET sslv2ciphers = *cipher_suites;
6438 unsigned int leadbyte;
6442 * We store the raw ciphers list in SSLv3+ format so we need to do some
6443 * preprocessing to convert the list first. If there are any SSLv2 only
6444 * ciphersuites with a non-zero leading byte then we are going to
6445 * slightly over allocate because we won't store those. But that isn't a
6448 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
6449 s->s3.tmp.ciphers_raw = raw;
6451 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6454 for (s->s3.tmp.ciphers_rawlen = 0;
6455 PACKET_remaining(&sslv2ciphers) > 0;
6456 raw += TLS_CIPHER_LEN) {
6457 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
6459 && !PACKET_copy_bytes(&sslv2ciphers, raw,
6462 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
6463 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_PACKET);
6464 OPENSSL_free(s->s3.tmp.ciphers_raw);
6465 s->s3.tmp.ciphers_raw = NULL;
6466 s->s3.tmp.ciphers_rawlen = 0;
6470 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
6472 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
6473 &s->s3.tmp.ciphers_rawlen)) {
6474 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
6480 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
6481 int isv2format, STACK_OF(SSL_CIPHER) **sk,
6482 STACK_OF(SSL_CIPHER) **scsvs)
6485 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6490 if (!PACKET_buf_init(&pkt, bytes, len))
6492 return ossl_bytes_to_cipher_list(sc, &pkt, sk, scsvs, isv2format, 0);
6495 int ossl_bytes_to_cipher_list(SSL_CONNECTION *s, PACKET *cipher_suites,
6496 STACK_OF(SSL_CIPHER) **skp,
6497 STACK_OF(SSL_CIPHER) **scsvs_out,
6498 int sslv2format, int fatal)
6500 const SSL_CIPHER *c;
6501 STACK_OF(SSL_CIPHER) *sk = NULL;
6502 STACK_OF(SSL_CIPHER) *scsvs = NULL;
6504 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
6505 unsigned char cipher[SSLV2_CIPHER_LEN];
6507 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
6509 if (PACKET_remaining(cipher_suites) == 0) {
6511 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_R_NO_CIPHERS_SPECIFIED);
6513 ERR_raise(ERR_LIB_SSL, SSL_R_NO_CIPHERS_SPECIFIED);
6517 if (PACKET_remaining(cipher_suites) % n != 0) {
6519 SSLfatal(s, SSL_AD_DECODE_ERROR,
6520 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6522 ERR_raise(ERR_LIB_SSL, SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
6526 sk = sk_SSL_CIPHER_new_null();
6527 scsvs = sk_SSL_CIPHER_new_null();
6528 if (sk == NULL || scsvs == NULL) {
6530 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6532 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6536 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
6538 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
6539 * first byte set to zero, while true SSLv2 ciphers have a non-zero
6540 * first byte. We don't support any true SSLv2 ciphers, so skip them.
6542 if (sslv2format && cipher[0] != '\0')
6545 /* For SSLv2-compat, ignore leading 0-byte. */
6546 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
6548 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
6549 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
6551 SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_MALLOC_FAILURE);
6553 ERR_raise(ERR_LIB_SSL, ERR_R_MALLOC_FAILURE);
6558 if (PACKET_remaining(cipher_suites) > 0) {
6560 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_R_BAD_LENGTH);
6562 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_LENGTH);
6569 sk_SSL_CIPHER_free(sk);
6570 if (scsvs_out != NULL)
6573 sk_SSL_CIPHER_free(scsvs);
6576 sk_SSL_CIPHER_free(sk);
6577 sk_SSL_CIPHER_free(scsvs);
6581 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
6583 ctx->max_early_data = max_early_data;
6588 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
6590 return ctx->max_early_data;
6593 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
6595 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6600 sc->max_early_data = max_early_data;
6605 uint32_t SSL_get_max_early_data(const SSL *s)
6607 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6612 return sc->max_early_data;
6615 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
6617 ctx->recv_max_early_data = recv_max_early_data;
6622 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
6624 return ctx->recv_max_early_data;
6627 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
6629 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6634 sc->recv_max_early_data = recv_max_early_data;
6639 uint32_t SSL_get_recv_max_early_data(const SSL *s)
6641 const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
6646 return sc->recv_max_early_data;
6649 __owur unsigned int ssl_get_max_send_fragment(const SSL_CONNECTION *sc)
6651 /* Return any active Max Fragment Len extension */
6652 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session))
6653 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6655 /* return current SSL connection setting */
6656 return sc->max_send_fragment;
6659 __owur unsigned int ssl_get_split_send_fragment(const SSL_CONNECTION *sc)
6661 /* Return a value regarding an active Max Fragment Len extension */
6662 if (sc->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(sc->session)
6663 && sc->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(sc->session))
6664 return GET_MAX_FRAGMENT_LENGTH(sc->session);
6666 /* else limit |split_send_fragment| to current |max_send_fragment| */
6667 if (sc->split_send_fragment > sc->max_send_fragment)
6668 return sc->max_send_fragment;
6670 /* return current SSL connection setting */
6671 return sc->split_send_fragment;
6674 int SSL_stateless(SSL *s)
6677 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6679 /* TODO(QUIC): This will need further work. */
6683 /* Ensure there is no state left over from a previous invocation */
6689 sc->s3.flags |= TLS1_FLAGS_STATELESS;
6690 ret = SSL_accept(s);
6691 sc->s3.flags &= ~TLS1_FLAGS_STATELESS;
6693 if (ret > 0 && sc->ext.cookieok)
6696 if (sc->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(sc))
6702 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
6704 ctx->pha_enabled = val;
6707 void SSL_set_post_handshake_auth(SSL *ssl, int val)
6709 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6714 sc->pha_enabled = val;
6717 int SSL_verify_client_post_handshake(SSL *ssl)
6719 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
6724 if (!SSL_CONNECTION_IS_TLS13(sc)) {
6725 ERR_raise(ERR_LIB_SSL, SSL_R_WRONG_SSL_VERSION);
6729 ERR_raise(ERR_LIB_SSL, SSL_R_NOT_SERVER);
6733 if (!SSL_is_init_finished(ssl)) {
6734 ERR_raise(ERR_LIB_SSL, SSL_R_STILL_IN_INIT);
6738 switch (sc->post_handshake_auth) {
6740 ERR_raise(ERR_LIB_SSL, SSL_R_EXTENSION_NOT_RECEIVED);
6743 case SSL_PHA_EXT_SENT:
6744 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
6746 case SSL_PHA_EXT_RECEIVED:
6748 case SSL_PHA_REQUEST_PENDING:
6749 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_PENDING);
6751 case SSL_PHA_REQUESTED:
6752 ERR_raise(ERR_LIB_SSL, SSL_R_REQUEST_SENT);
6756 sc->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
6758 /* checks verify_mode and algorithm_auth */
6759 if (!send_certificate_request(sc)) {
6760 sc->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
6761 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_CONFIG);
6765 ossl_statem_set_in_init(sc, 1);
6769 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
6770 SSL_CTX_generate_session_ticket_fn gen_cb,
6771 SSL_CTX_decrypt_session_ticket_fn dec_cb,
6774 ctx->generate_ticket_cb = gen_cb;
6775 ctx->decrypt_ticket_cb = dec_cb;
6776 ctx->ticket_cb_data = arg;
6780 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
6781 SSL_allow_early_data_cb_fn cb,
6784 ctx->allow_early_data_cb = cb;
6785 ctx->allow_early_data_cb_data = arg;
6788 void SSL_set_allow_early_data_cb(SSL *s,
6789 SSL_allow_early_data_cb_fn cb,
6792 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6797 sc->allow_early_data_cb = cb;
6798 sc->allow_early_data_cb_data = arg;
6801 const EVP_CIPHER *ssl_evp_cipher_fetch(OSSL_LIB_CTX *libctx,
6803 const char *properties)
6805 const EVP_CIPHER *ciph;
6807 ciph = tls_get_cipher_from_engine(nid);
6812 * If there is no engine cipher then we do an explicit fetch. This may fail
6813 * and that could be ok
6816 ciph = EVP_CIPHER_fetch(libctx, OBJ_nid2sn(nid), properties);
6822 int ssl_evp_cipher_up_ref(const EVP_CIPHER *cipher)
6824 /* Don't up-ref an implicit EVP_CIPHER */
6825 if (EVP_CIPHER_get0_provider(cipher) == NULL)
6829 * The cipher was explicitly fetched and therefore it is safe to cast
6832 return EVP_CIPHER_up_ref((EVP_CIPHER *)cipher);
6835 void ssl_evp_cipher_free(const EVP_CIPHER *cipher)
6840 if (EVP_CIPHER_get0_provider(cipher) != NULL) {
6842 * The cipher was explicitly fetched and therefore it is safe to cast
6845 EVP_CIPHER_free((EVP_CIPHER *)cipher);
6849 const EVP_MD *ssl_evp_md_fetch(OSSL_LIB_CTX *libctx,
6851 const char *properties)
6855 md = tls_get_digest_from_engine(nid);
6859 /* Otherwise we do an explicit fetch */
6861 md = EVP_MD_fetch(libctx, OBJ_nid2sn(nid), properties);
6866 int ssl_evp_md_up_ref(const EVP_MD *md)
6868 /* Don't up-ref an implicit EVP_MD */
6869 if (EVP_MD_get0_provider(md) == NULL)
6873 * The digest was explicitly fetched and therefore it is safe to cast
6876 return EVP_MD_up_ref((EVP_MD *)md);
6879 void ssl_evp_md_free(const EVP_MD *md)
6884 if (EVP_MD_get0_provider(md) != NULL) {
6886 * The digest was explicitly fetched and therefore it is safe to cast
6889 EVP_MD_free((EVP_MD *)md);
6893 int SSL_set0_tmp_dh_pkey(SSL *s, EVP_PKEY *dhpkey)
6895 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
6900 if (!ssl_security(sc, SSL_SECOP_TMP_DH,
6901 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6902 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6905 EVP_PKEY_free(sc->cert->dh_tmp);
6906 sc->cert->dh_tmp = dhpkey;
6910 int SSL_CTX_set0_tmp_dh_pkey(SSL_CTX *ctx, EVP_PKEY *dhpkey)
6912 if (!ssl_ctx_security(ctx, SSL_SECOP_TMP_DH,
6913 EVP_PKEY_get_security_bits(dhpkey), 0, dhpkey)) {
6914 ERR_raise(ERR_LIB_SSL, SSL_R_DH_KEY_TOO_SMALL);
6917 EVP_PKEY_free(ctx->cert->dh_tmp);
6918 ctx->cert->dh_tmp = dhpkey;