ref: 009439541d2c6e8af2596f8fb1b4df85861fd212
dir: /third_party/boringssl/src/crypto/x509/x509_trs.c/
/*
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
* 1999.
*/
/* ====================================================================
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com). */
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/obj.h>
#include <openssl/x509.h>
#include "../internal.h"
#include "internal.h"
typedef struct x509_trust_st X509_TRUST;
struct x509_trust_st {
int trust;
int (*check_trust)(const X509_TRUST *, X509 *);
int nid;
} /* X509_TRUST */;
static int trust_1oidany(const X509_TRUST *trust, X509 *x);
static int trust_compat(const X509_TRUST *trust, X509 *x);
static int obj_trust(int id, X509 *x);
static const X509_TRUST trstandard[] = {
{X509_TRUST_COMPAT, trust_compat, 0},
{X509_TRUST_SSL_CLIENT, trust_1oidany, NID_client_auth},
{X509_TRUST_SSL_SERVER, trust_1oidany, NID_server_auth},
{X509_TRUST_EMAIL, trust_1oidany, NID_email_protect},
{X509_TRUST_OBJECT_SIGN, trust_1oidany, NID_code_sign},
{X509_TRUST_TSA, trust_1oidany, NID_time_stamp}};
static const X509_TRUST *X509_TRUST_get0(int id) {
for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(trstandard); i++) {
if (trstandard[i].trust == id) {
return &trstandard[i];
}
}
return NULL;
}
int X509_check_trust(X509 *x, int id, int flags) {
if (id == -1) {
return X509_TRUST_TRUSTED;
}
// We get this as a default value
if (id == 0) {
int rv = obj_trust(NID_anyExtendedKeyUsage, x);
if (rv != X509_TRUST_UNTRUSTED) {
return rv;
}
return trust_compat(NULL, x);
}
const X509_TRUST *pt = X509_TRUST_get0(id);
if (pt == NULL) {
// Unknown trust IDs are silently reintrepreted as NIDs. This is unreachable
// from the certificate verifier itself, but wpa_supplicant relies on it.
// Note this relies on commonly-used NIDs and trust IDs not colliding.
return obj_trust(id, x);
}
return pt->check_trust(pt, x);
}
int X509_is_valid_trust_id(int trust) {
return X509_TRUST_get0(trust) != NULL;
}
static int trust_1oidany(const X509_TRUST *trust, X509 *x) {
if (x->aux && (x->aux->trust || x->aux->reject)) {
return obj_trust(trust->nid, x);
}
// we don't have any trust settings: for compatibility we return trusted
// if it is self signed
return trust_compat(trust, x);
}
static int trust_compat(const X509_TRUST *trust, X509 *x) {
if (!x509v3_cache_extensions(x)) {
return X509_TRUST_UNTRUSTED;
}
if (x->ex_flags & EXFLAG_SS) {
return X509_TRUST_TRUSTED;
} else {
return X509_TRUST_UNTRUSTED;
}
}
static int obj_trust(int id, X509 *x) {
X509_CERT_AUX *ax = x->aux;
if (!ax) {
return X509_TRUST_UNTRUSTED;
}
for (size_t i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
const ASN1_OBJECT *obj = sk_ASN1_OBJECT_value(ax->reject, i);
if (OBJ_obj2nid(obj) == id) {
return X509_TRUST_REJECTED;
}
}
for (size_t i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
const ASN1_OBJECT *obj = sk_ASN1_OBJECT_value(ax->trust, i);
if (OBJ_obj2nid(obj) == id) {
return X509_TRUST_TRUSTED;
}
}
return X509_TRUST_UNTRUSTED;
}