ref: bfe9da47cfa2f51ebef78c59332b5ba2deba306d
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/x509v3.h>
#include "../x509v3/internal.h"
#include "internal.h"
static int tr_cmp(const X509_TRUST **a, const X509_TRUST **b);
static void trtable_free(X509_TRUST *p);
static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);
static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
static int obj_trust(int id, X509 *x, int flags);
static int (*default_trust) (int id, X509 *x, int flags) = obj_trust;
/*
* WARNING: the following table should be kept in order of trust and without
* any gaps so we can just subtract the minimum trust value to get an index
* into the table
*/
static X509_TRUST trstandard[] = {
{X509_TRUST_COMPAT, 0, trust_compat, (char *)"compatible", 0, NULL},
{X509_TRUST_SSL_CLIENT, 0, trust_1oidany, (char *)"SSL Client",
NID_client_auth, NULL},
{X509_TRUST_SSL_SERVER, 0, trust_1oidany, (char *)"SSL Server",
NID_server_auth, NULL},
{X509_TRUST_EMAIL, 0, trust_1oidany, (char *)"S/MIME email",
NID_email_protect, NULL},
{X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, (char *)"Object Signer",
NID_code_sign, NULL},
{X509_TRUST_OCSP_SIGN, 0, trust_1oid, (char *)"OCSP responder",
NID_OCSP_sign, NULL},
{X509_TRUST_OCSP_REQUEST, 0, trust_1oid, (char *)"OCSP request",
NID_ad_OCSP, NULL},
{X509_TRUST_TSA, 0, trust_1oidany, (char *)"TSA server", NID_time_stamp,
NULL}
};
#define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
static STACK_OF(X509_TRUST) *trtable = NULL;
static int tr_cmp(const X509_TRUST **a, const X509_TRUST **b)
{
return (*a)->trust - (*b)->trust;
}
int (*X509_TRUST_set_default(int (*trust) (int, X509 *, int))) (int, X509 *,
int) {
int (*oldtrust) (int, X509 *, int);
oldtrust = default_trust;
default_trust = trust;
return oldtrust;
}
int X509_check_trust(X509 *x, int id, int flags)
{
X509_TRUST *pt;
int idx;
if (id == -1)
return 1;
/* We get this as a default value */
if (id == 0) {
int rv;
rv = obj_trust(NID_anyExtendedKeyUsage, x, 0);
if (rv != X509_TRUST_UNTRUSTED)
return rv;
return trust_compat(NULL, x, 0);
}
idx = X509_TRUST_get_by_id(id);
if (idx == -1)
return default_trust(id, x, flags);
pt = X509_TRUST_get0(idx);
return pt->check_trust(pt, x, flags);
}
int X509_TRUST_get_count(void)
{
if (!trtable)
return X509_TRUST_COUNT;
return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
}
X509_TRUST *X509_TRUST_get0(int idx)
{
if (idx < 0)
return NULL;
if (idx < (int)X509_TRUST_COUNT)
return trstandard + idx;
return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
}
int X509_TRUST_get_by_id(int id)
{
X509_TRUST tmp;
size_t idx;
if ((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
return id - X509_TRUST_MIN;
tmp.trust = id;
if (!trtable)
return -1;
sk_X509_TRUST_sort(trtable);
if (!sk_X509_TRUST_find(trtable, &idx, &tmp)) {
return -1;
}
return idx + X509_TRUST_COUNT;
}
int X509_TRUST_set(int *t, int trust)
{
if (X509_TRUST_get_by_id(trust) == -1) {
OPENSSL_PUT_ERROR(X509, X509_R_INVALID_TRUST);
return 0;
}
*t = trust;
return 1;
}
int X509_TRUST_add(int id, int flags, int (*ck) (X509_TRUST *, X509 *, int),
char *name, int arg1, void *arg2)
{
int idx;
X509_TRUST *trtmp;
char *name_dup;
/*
* This is set according to what we change: application can't set it
*/
flags &= ~X509_TRUST_DYNAMIC;
/* This will always be set for application modified trust entries */
flags |= X509_TRUST_DYNAMIC_NAME;
/* Get existing entry if any */
idx = X509_TRUST_get_by_id(id);
/* Need a new entry */
if (idx == -1) {
if (!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
return 0;
}
trtmp->flags = X509_TRUST_DYNAMIC;
} else
trtmp = X509_TRUST_get0(idx);
/* Duplicate the supplied name. */
name_dup = OPENSSL_strdup(name);
if (name_dup == NULL) {
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
if (idx == -1)
OPENSSL_free(trtmp);
return 0;
}
/* OPENSSL_free existing name if dynamic */
if (trtmp->flags & X509_TRUST_DYNAMIC_NAME)
OPENSSL_free(trtmp->name);
trtmp->name = name_dup;
/* Keep the dynamic flag of existing entry */
trtmp->flags &= X509_TRUST_DYNAMIC;
/* Set all other flags */
trtmp->flags |= flags;
trtmp->trust = id;
trtmp->check_trust = ck;
trtmp->arg1 = arg1;
trtmp->arg2 = arg2;
/* If its a new entry manage the dynamic table */
if (idx == -1) {
if (!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
trtable_free(trtmp);
return 0;
}
if (!sk_X509_TRUST_push(trtable, trtmp)) {
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
trtable_free(trtmp);
return 0;
}
}
return 1;
}
static void trtable_free(X509_TRUST *p)
{
if (!p)
return;
if (p->flags & X509_TRUST_DYNAMIC) {
if (p->flags & X509_TRUST_DYNAMIC_NAME)
OPENSSL_free(p->name);
OPENSSL_free(p);
}
}
void X509_TRUST_cleanup(void)
{
unsigned int i;
for (i = 0; i < X509_TRUST_COUNT; i++)
trtable_free(trstandard + i);
sk_X509_TRUST_pop_free(trtable, trtable_free);
trtable = NULL;
}
int X509_TRUST_get_flags(const X509_TRUST *xp)
{
return xp->flags;
}
char *X509_TRUST_get0_name(const X509_TRUST *xp)
{
return xp->name;
}
int X509_TRUST_get_trust(const X509_TRUST *xp)
{
return xp->trust;
}
static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
{
if (x->aux && (x->aux->trust || x->aux->reject))
return obj_trust(trust->arg1, x, flags);
/*
* we don't have any trust settings: for compatibility we return trusted
* if it is self signed
*/
return trust_compat(trust, x, flags);
}
static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
{
if (x->aux)
return obj_trust(trust->arg1, x, flags);
return X509_TRUST_UNTRUSTED;
}
static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
{
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, int flags)
{
ASN1_OBJECT *obj;
size_t i;
X509_CERT_AUX *ax;
ax = x->aux;
if (!ax)
return X509_TRUST_UNTRUSTED;
if (ax->reject) {
for (i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
obj = sk_ASN1_OBJECT_value(ax->reject, i);
if (OBJ_obj2nid(obj) == id)
return X509_TRUST_REJECTED;
}
}
if (ax->trust) {
for (i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
obj = sk_ASN1_OBJECT_value(ax->trust, i);
if (OBJ_obj2nid(obj) == id)
return X509_TRUST_TRUSTED;
}
}
return X509_TRUST_UNTRUSTED;
}