ref: 464763202be7bdafa703c8c2ecfe1f4a5142f26f
dir: /sys/src/ape/lib/openssl/crypto/x509/x509_trs.c/
/* x509_trs.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 <stdio.h>
#include "cryptlib.h"
#include <openssl/x509v3.h>
static int tr_cmp(const X509_TRUST * const *a,
const X509_TRUST * const *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, "compatible", 0, NULL},
{X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},
{X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth, NULL},
{X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
{X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign, NULL},
{X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL},
{X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL}
};
#define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
IMPLEMENT_STACK_OF(X509_TRUST)
static STACK_OF(X509_TRUST) *trtable = NULL;
static int tr_cmp(const X509_TRUST * const *a,
const X509_TRUST * const *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;
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;
int idx;
if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
return id - X509_TRUST_MIN;
tmp.trust = id;
if(!trtable) return -1;
idx = sk_X509_TRUST_find(trtable, &tmp);
if(idx == -1) return -1;
return idx + X509_TRUST_COUNT;
}
int X509_TRUST_set(int *t, int trust)
{
if(X509_TRUST_get_by_id(trust) == -1) {
X509err(X509_F_X509_TRUST_SET, 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;
/* 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)))) {
X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
return 0;
}
trtmp->flags = X509_TRUST_DYNAMIC;
} else trtmp = X509_TRUST_get0(idx);
/* OPENSSL_free existing name if dynamic */
if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name);
/* dup supplied name */
if(!(trtmp->name = BUF_strdup(name))) {
X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
return 0;
}
/* 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))) {
X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
return 0;
}
if (!sk_X509_TRUST_push(trtable, trtmp)) {
X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
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(X509_TRUST *xp)
{
return xp->flags;
}
char *X509_TRUST_get0_name(X509_TRUST *xp)
{
return xp->name;
}
int X509_TRUST_get_trust(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)
{
X509_check_purpose(x, -1, 0);
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;
int 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;
}