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/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* [email protected] *
* *
* 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. *
* *
* 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 Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include <kurl.h>
#include <qhostaddress.h>
#include <util/log.h>
#include <util/functions.h>
#include <torrent/globals.h>
#include <torrent/server.h>
#include <torrent/peermanager.h>
#include <interfaces/torrentinterface.h>
#include "dhttrackerbackend.h"
#include "dht.h"
#include "announcetask.h"
using namespace bt;
namespace dht
{
DHTTrackerBackend::DHTTrackerBackend(DHTBase & dh_table,kt::TorrentInterface* tor)
: dh_table(dh_table),curr_task(0),tor(tor)
{
connect(&timer,SIGNAL(timeout()),this,SLOT(onTimeout()));
connect(&dh_table,SIGNAL(started()),this,SLOT(manualUpdate()));
connect(&dh_table,SIGNAL(stopped()),this,SLOT(dhtStopped()));
started = false;
}
DHTTrackerBackend::~DHTTrackerBackend()
{
if (curr_task)
curr_task->kill();
}
void DHTTrackerBackend::start()
{
started = true;
if (dh_table.isRunning())
doRequest();
}
void DHTTrackerBackend::dhtStopped()
{
stop(0);
curr_task = 0;
}
void DHTTrackerBackend::stop(bt::WaitJob*)
{
started = false;
if (curr_task)
{
curr_task->kill();
timer.stop();
}
}
void DHTTrackerBackend::manualUpdate()
{
if (dh_table.isRunning() && started)
doRequest();
}
bool DHTTrackerBackend::doRequest()
{
if (!dh_table.isRunning())
return false;
if (curr_task)
return true;
const SHA1Hash & info_hash = tor->getInfoHash();
Uint16 port = bt::Globals::instance().getServer().getPortInUse();
curr_task = dh_table.announce(info_hash,port);
if (curr_task)
{
for (Uint32 i = 0;i < tor->getNumDHTNodes();i++)
{
const kt::DHTNode & n = tor->getDHTNode(i);
curr_task->addDHTNode(n.ip,n.port);
}
connect(curr_task,SIGNAL(dataReady( Task* )),this,SLOT(onDataReady( Task* )));
connect(curr_task,SIGNAL(finished( Task* )),this,SLOT(onFinished( Task* )));
return true;
}
return false;
}
void DHTTrackerBackend::onFinished(Task* t)
{
if (curr_task == t)
{
onDataReady(curr_task);
curr_task = 0;
// do another announce in 5 minutes or so
timer.start(5 * 60 * 1000,true);
}
}
void DHTTrackerBackend::onDataReady(Task* t)
{
if (curr_task == t)
{
Uint32 cnt = 0;
DBItem item;
while (curr_task->takeItem(item))
{
Uint16 port = bt::ReadUint16(item.getData(),4);
QString ip = QHostAddress(ReadUint32(item.getData(),0)).toString();
addPeer(ip,port);
cnt++;
}
if (cnt)
{
Out(SYS_DHT|LOG_NOTICE) <<
QString("DHT: Got %1 potential peers for torrent %2")
.arg(cnt).arg(tor->getStats().torrent_name) << endl;
peersReady(this);
}
}
}
void DHTTrackerBackend::onTimeout()
{
if (dh_table.isRunning() && started)
doRequest();
}
}
#include "dhttrackerbackend.moc"
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