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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/krb5/ccache/ccselect_realm.c - realm ccselect module */
/*
* Copyright (C) 2011 by the Massachusetts Institute of Technology.
* All rights reserved.
*
* 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.
*/
#include "k5-int.h"
#include "cc-int.h"
#include <krb5/ccselect_plugin.h>
static krb5_error_code
realm_init(krb5_context context, krb5_ccselect_moddata *data_out,
int *priority_out)
{
*data_out = NULL;
*priority_out = KRB5_CCSELECT_PRIORITY_HEURISTIC;
return 0;
}
static krb5_error_code
realm_choose(krb5_context context, krb5_ccselect_moddata data,
krb5_principal server, krb5_ccache *cache_out,
krb5_principal *princ_out)
{
krb5_error_code ret;
krb5_cccol_cursor cursor;
krb5_ccache cache;
krb5_principal princ;
*cache_out = NULL;
*princ_out = NULL;
if (krb5_is_referral_realm(&server->realm))
return KRB5_PLUGIN_NO_HANDLE;
/* Scan the collection for a cache with a client principal in the same
* realm as the server principal. */
ret = krb5_cccol_cursor_new(context, &cursor);
if (ret)
return ret;
while ((ret = krb5_cccol_cursor_next(context, cursor, &cache)) == 0 &&
cache != NULL) {
ret = krb5_cc_get_principal(context, cache, &princ);
if (ret == 0) {
if (data_eq(princ->realm, server->realm))
break;
krb5_free_principal(context, princ);
}
krb5_cc_close(context, cache);
}
krb5_cccol_cursor_free(context, &cursor);
if (ret)
return ret;
if (cache == NULL)
return KRB5_PLUGIN_NO_HANDLE;
*cache_out = cache;
*princ_out = princ;
return 0;
}
krb5_error_code
ccselect_realm_initvt(krb5_context context, int maj_ver, int min_ver,
krb5_plugin_vtable vtable)
{
krb5_ccselect_vtable vt;
if (maj_ver != 1)
return KRB5_PLUGIN_VER_NOTSUPP;
vt = (krb5_ccselect_vtable)vtable;
vt->name = "realm";
vt->init = realm_init;
vt->choose = realm_choose;
return 0;
}
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