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/*
Unix SMB/CIFS implementation.
PAC Glue between Samba and the KDC
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2009
Copyright (C) Simo Sorce <idra@samba.org> 2010
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 3 of the License, or
(at your option) any later version.
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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
#include <hdb.h>
#include "kdc/samba_kdc.h"
#include "kdc/pac-glue.h"
#include "librpc/gen_ndr/ndr_krb5pac.h"
#include "auth/kerberos/pac_utils.h"
#include "kdc/kdc-glue.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_KERBEROS
int kdc_check_pac(krb5_context context,
DATA_BLOB srv_sig,
struct PAC_SIGNATURE_DATA *kdc_sig,
hdb_entry *ent)
{
krb5_enctype etype;
int ret;
krb5_keyblock keyblock;
Key *key;
if (kdc_sig->type == CKSUMTYPE_HMAC_MD5) {
etype = ENCTYPE_ARCFOUR_HMAC;
} else {
ret = krb5_cksumtype_to_enctype(context,
kdc_sig->type,
&etype);
if (ret != 0) {
return ret;
}
}
ret = hdb_enctype2key(context, ent, NULL, etype, &key);
if (ret != 0) {
return ret;
}
keyblock = key->key;
return check_pac_checksum(srv_sig, kdc_sig,
context, &keyblock);
}
struct samba_kdc_entry_pac samba_kdc_get_device_pac(const astgs_request_t r)
{
const hdb_entry *device = kdc_request_get_armor_client(r);
struct samba_kdc_entry *device_skdc_entry = NULL;
const hdb_entry *device_krbtgt = NULL;
const struct samba_kdc_entry *device_krbtgt_skdc_entry = NULL;
const krb5_const_pac device_pac = kdc_request_get_armor_pac(r);
if (device != NULL) {
device_skdc_entry = talloc_get_type_abort(device->context,
struct samba_kdc_entry);
device_krbtgt = kdc_request_get_armor_server(r);
if (device_krbtgt != NULL) {
device_krbtgt_skdc_entry = talloc_get_type_abort(device_krbtgt->context,
struct samba_kdc_entry);
}
}
return samba_kdc_entry_pac(device_pac,
device_skdc_entry,
samba_kdc_entry_is_trust(device_krbtgt_skdc_entry));
}
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