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/*
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "constraints_validator.h"
#include <debug.h>
#include <credentials/certificates/x509.h>
typedef struct private_constraints_validator_t private_constraints_validator_t;
/**
* Private data of an constraints_validator_t object.
*/
struct private_constraints_validator_t {
/**
* Public constraints_validator_t interface.
*/
constraints_validator_t public;
};
/**
* Check pathlen constraint of issuer certificate
*/
static bool check_pathlen(x509_t *issuer, int pathlen)
{
int pathlen_constraint;
pathlen_constraint = issuer->get_pathLenConstraint(issuer);
if (pathlen_constraint != X509_NO_PATH_LEN_CONSTRAINT &&
pathlen > pathlen_constraint)
{
DBG1(DBG_CFG, "path length of %d violates constraint of %d",
pathlen, pathlen_constraint);
return FALSE;
}
return TRUE;
}
METHOD(cert_validator_t, validate, bool,
private_constraints_validator_t *this, certificate_t *subject,
certificate_t *issuer, bool online, int pathlen, auth_cfg_t *auth)
{
if (issuer->get_type(issuer) == CERT_X509 &&
subject->get_type(subject) == CERT_X509)
{
if (!check_pathlen((x509_t*)issuer, pathlen))
{
return FALSE;
}
}
return TRUE;
}
METHOD(constraints_validator_t, destroy, void,
private_constraints_validator_t *this)
{
free(this);
}
/**
* See header
*/
constraints_validator_t *constraints_validator_create()
{
private_constraints_validator_t *this;
INIT(this,
.public = {
.validator.validate = _validate,
.destroy = _destroy,
},
);
return &this->public;
}
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