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/*
* kdc/policy.c
*
* Copyright 1990 by the Massachusetts Institute of Technology.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* Policy decision routines for KDC.
*/
/*
* Copyright (c) 2006-2008, Novell, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * The copyright holder's name is not used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
*/
#include "k5-int.h"
#include "kdc_util.h"
#include "extern.h"
int
against_local_policy_as(register krb5_kdc_req *request, krb5_db_entry client,
krb5_db_entry server, krb5_timestamp kdc_time,
const char **status)
{
krb5_error_code code;
kdb_check_policy_as_req req;
kdb_check_policy_as_rep rep;
krb5_data req_data;
krb5_data rep_data;
#if 0
/* An AS request must include the addresses field */
if (request->addresses == 0) {
*status = "NO ADDRESS";
return KRB5KDC_ERR_POLICY;
}
#endif
memset(&req, 0, sizeof(req));
memset(&rep, 0, sizeof(rep));
req.request = request;
req.client = &client;
req.server = &server;
req.kdc_time = kdc_time;
req_data.data = (void *)&req;
req_data.length = sizeof(req);
rep_data.data = (void *)&rep;
rep_data.length = sizeof(rep);
code = krb5_db_invoke(kdc_context,
KRB5_KDB_METHOD_CHECK_POLICY_AS,
&req_data,
&rep_data);
if (code == KRB5_KDB_DBTYPE_NOSUP)
return 0;
*status = rep.status;
if (code != 0) {
code -= ERROR_TABLE_BASE_krb5;
if (code < 0 || code > 128)
code = KRB_ERR_GENERIC;
}
return code;
}
/*
* This is where local policy restrictions for the TGS should placed.
*/
krb5_error_code
against_local_policy_tgs(register krb5_kdc_req *request, krb5_db_entry server,
krb5_ticket *ticket, const char **status)
{
krb5_error_code code;
kdb_check_policy_tgs_req req;
kdb_check_policy_tgs_rep rep;
krb5_data req_data;
krb5_data rep_data;
#if 0
/*
* For example, if your site wants to disallow ticket forwarding,
* you might do something like this:
*/
if (isflagset(request->kdc_options, KDC_OPT_FORWARDED)) {
*status = "FORWARD POLICY";
return KRB5KDC_ERR_POLICY;
}
#endif
memset(&req, 0, sizeof(req));
memset(&rep, 0, sizeof(rep));
req.request = request;
req.server = &server;
req.ticket = ticket;
req_data.data = (void *)&req;
req_data.length = sizeof(req);
rep_data.data = (void *)&rep;
rep_data.length = sizeof(rep);
code = krb5_db_invoke(kdc_context,
KRB5_KDB_METHOD_CHECK_POLICY_TGS,
&req_data,
&rep_data);
if (code == KRB5_KDB_DBTYPE_NOSUP)
return 0;
*status = rep.status;
if (code != 0) {
code -= ERROR_TABLE_BASE_krb5;
if (code < 0 || code > 128)
code = KRB_ERR_GENERIC;
}
return code;
}
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