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/*
* This program is 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.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* $Id$
* @file rlm_expiration.c
* @brief Lockout user accounts based on control attributes.
*
* @copyright 2001,2006 The FreeRADIUS server project
* @copyright 2004 Kostas Kalevras <kkalev@noc.ntua.gr>
*/
RCSID("$Id$")
#include <freeradius-devel/radiusd.h>
#include <freeradius-devel/modules.h>
#include <ctype.h>
/*
* Check if account has expired, and if user may login now.
*/
static rlm_rcode_t CC_HINT(nonnull) mod_authorize(UNUSED void *instance, REQUEST *request)
{
VALUE_PAIR *vp, *check_item;
char date[50];
check_item = fr_pair_find_by_num(request->config, PW_EXPIRATION, 0, TAG_ANY);
if (!check_item) return RLM_MODULE_NOOP;
/*
* Has this user's password expired?
*
* If so, remove ALL reply attributes,
* and add our own Reply-Message, saying
* why they're being rejected.
*/
if (((time_t) check_item->vp_date) <= request->timestamp) {
vp_prints_value(date, sizeof(date), check_item, 0);
REDEBUG("Account expired at '%s'", date);
return RLM_MODULE_USERLOCK;
} else {
if (RDEBUG_ENABLED) {
vp_prints_value(date, sizeof(date), check_item, 0);
RDEBUG("Account will expire at '%s'", date);
}
}
/*
* Else the account hasn't expired, but it may do so
* in the future. Set Session-Timeout.
*/
vp = fr_pair_find_by_num(request->reply->vps, PW_SESSION_TIMEOUT, 0, TAG_ANY);
if (!vp) {
vp = radius_pair_create(request->reply, &request->reply->vps, PW_SESSION_TIMEOUT, 0);
vp->vp_date = (uint32_t) (((time_t) check_item->vp_date) - request->timestamp);
} else if (vp->vp_date > ((uint32_t) (((time_t) check_item->vp_date) - request->timestamp))) {
vp->vp_date = (uint32_t) (((time_t) check_item->vp_date) - request->timestamp);
}
return RLM_MODULE_OK;
}
/*
* Compare the expiration date.
*/
static int expirecmp(UNUSED void *instance, REQUEST *req, UNUSED VALUE_PAIR *request, VALUE_PAIR *check,
UNUSED VALUE_PAIR *check_pairs, UNUSED VALUE_PAIR **reply_pairs)
{
time_t now = 0;
now = (req) ? req->timestamp : time(NULL);
if (now <= ((time_t) check->vp_date))
return 0;
return +1;
}
/*
* Do any per-module initialization that is separate to each
* configured instance of the module. e.g. set up connections
* to external databases, read configuration files, set up
* dictionary entries, etc.
*
* If configuration information is given in the config section
* that must be referenced in later calls, store a handle to it
* in *instance otherwise put a null pointer there.
*/
static int mod_instantiate(UNUSED CONF_SECTION *conf, void *instance)
{
/*
* Register the expiration comparison operation.
*/
paircompare_register(dict_attrbyvalue(PW_EXPIRATION, 0), NULL, false, expirecmp, instance);
return 0;
}
/*
* The module name should be the only globally exported symbol.
* That is, everything else should be 'static'.
*
* If the module needs to temporarily modify it's instantiation
* data, the type should be changed to RLM_TYPE_THREAD_UNSAFE.
* The server will then take care of ensuring that the module
* is single-threaded.
*/
extern module_t rlm_expiration;
module_t rlm_expiration = {
.magic = RLM_MODULE_INIT,
.name = "expiration",
.type = RLM_TYPE_THREAD_SAFE,
.instantiate = mod_instantiate,
.methods = {
[MOD_AUTHORIZE] = mod_authorize,
[MOD_POST_AUTH] = mod_authorize
},
};
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