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/*
* Copyright (C) 2010 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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 "inactivity_job.h"
#include <daemon.h>
typedef struct private_inactivity_job_t private_inactivity_job_t;
/**
* Private data of an inactivity_job_t object.
*/
struct private_inactivity_job_t {
/**
* Public inactivity_job_t interface.
*/
inactivity_job_t public;
/**
* Reqid of CHILD_SA to check
*/
u_int32_t reqid;
/**
* Inactivity timeout
*/
u_int32_t timeout;
/**
* Close IKE_SA if last remaining CHILD inactive?
*/
bool close_ike;
};
METHOD(job_t, destroy, void,
private_inactivity_job_t *this)
{
free(this);
}
METHOD(job_t, execute, job_requeue_t,
private_inactivity_job_t *this)
{
ike_sa_t *ike_sa;
u_int32_t reschedule = 0;
ike_sa = charon->ike_sa_manager->checkout_by_id(charon->ike_sa_manager,
this->reqid, TRUE);
if (ike_sa)
{
enumerator_t *enumerator;
child_sa_t *child_sa;
u_int32_t delete = 0;
protocol_id_t proto = 0;
int children = 0;
status_t status = SUCCESS;
enumerator = ike_sa->create_child_sa_enumerator(ike_sa);
while (enumerator->enumerate(enumerator, (void**)&child_sa))
{
if (child_sa->get_reqid(child_sa) == this->reqid)
{
time_t in, out, diff;
child_sa->get_usestats(child_sa, TRUE, &in, NULL, NULL);
child_sa->get_usestats(child_sa, FALSE, &out, NULL, NULL);
diff = time_monotonic(NULL) - max(in, out);
if (diff >= this->timeout)
{
delete = child_sa->get_spi(child_sa, TRUE);
proto = child_sa->get_protocol(child_sa);
}
else
{
reschedule = this->timeout - diff;
}
}
children++;
}
enumerator->destroy(enumerator);
if (delete)
{
if (children == 1 && this->close_ike)
{
DBG1(DBG_JOB, "deleting IKE_SA after %d seconds "
"of CHILD_SA inactivity", this->timeout);
status = ike_sa->delete(ike_sa);
}
else
{
DBG1(DBG_JOB, "deleting CHILD_SA after %d seconds "
"of inactivity", this->timeout);
status = ike_sa->delete_child_sa(ike_sa, proto, delete, FALSE);
}
}
if (status == DESTROY_ME)
{
charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager,
ike_sa);
}
else
{
charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
}
}
if (reschedule)
{
return JOB_RESCHEDULE(reschedule);
}
return JOB_REQUEUE_NONE;
}
METHOD(job_t, get_priority, job_priority_t,
private_inactivity_job_t *this)
{
return JOB_PRIO_MEDIUM;
}
/**
* See header
*/
inactivity_job_t *inactivity_job_create(u_int32_t reqid, u_int32_t timeout,
bool close_ike)
{
private_inactivity_job_t *this;
INIT(this,
.public = {
.job_interface = {
.execute = _execute,
.get_priority = _get_priority,
.destroy = _destroy,
},
},
.reqid = reqid,
.timeout = timeout,
.close_ike = close_ike,
);
return &this->public;
}
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