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/*
* Copyright (C) 2012-2013 Tobias Brunner
* 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 "android_net.h"
#include "../charonservice.h"
#include <hydra.h>
#include <processing/jobs/callback_job.h>
#include <threading/mutex.h>
/** delay before firing roam events (ms) */
#define ROAM_DELAY 100
typedef struct private_android_net_t private_android_net_t;
struct private_android_net_t {
/**
* Public kernel interface
*/
android_net_t public;
/**
* Reference to NetworkManager object
*/
network_manager_t *network_manager;
/**
* earliest time of the next roam event
*/
timeval_t next_roam;
/**
* mutex to check and update roam event time
*/
mutex_t *mutex;
};
/**
* callback function that raises the delayed roam event
*/
static job_requeue_t roam_event()
{
/* this will fail if no connection is up */
charonservice->bypass_socket(charonservice, -1, 0);
hydra->kernel_interface->roam(hydra->kernel_interface, TRUE);
return JOB_REQUEUE_NONE;
}
/**
* Listen for connectivity change events and queue a roam event
*/
static void connectivity_cb(private_android_net_t *this,
bool disconnected)
{
timeval_t now;
job_t *job;
time_monotonic(&now);
this->mutex->lock(this->mutex);
if (!timercmp(&now, &this->next_roam, >))
{
this->mutex->unlock(this->mutex);
return;
}
timeval_add_ms(&now, ROAM_DELAY);
this->next_roam = now;
this->mutex->unlock(this->mutex);
job = (job_t*)callback_job_create((callback_job_cb_t)roam_event, NULL,
NULL, NULL);
lib->scheduler->schedule_job_ms(lib->scheduler, job, ROAM_DELAY);
}
METHOD(android_net_t, destroy, void,
private_android_net_t *this)
{
this->network_manager->remove_connectivity_cb(this->network_manager,
(void*)connectivity_cb);
this->mutex->destroy(this->mutex);
free(this);
}
/*
* Described in header.
*/
android_net_t *android_net_create()
{
private_android_net_t *this;
INIT(this,
.public = {
.destroy = _destroy,
},
.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
.network_manager = charonservice->get_network_manager(charonservice),
);
timerclear(&this->next_roam);
this->network_manager->add_connectivity_cb(this->network_manager,
(void*)connectivity_cb, this);
return &this->public;
};
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