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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "DHTGetPeersMessage.h"
#include <cstring>
#include "DHTNode.h"
#include "DHTRoutingTable.h"
#include "DHTMessageFactory.h"
#include "DHTMessageDispatcher.h"
#include "DHTMessageCallback.h"
#include "DHTPeerAnnounceStorage.h"
#include "Peer.h"
#include "DHTTokenTracker.h"
#include "util.h"
#include "bencode.h"
namespace aria2 {
const std::string DHTGetPeersMessage::GET_PEERS("get_peers");
const std::string DHTGetPeersMessage::INFO_HASH("info_hash");
DHTGetPeersMessage::DHTGetPeersMessage(const SharedHandle<DHTNode>& localNode,
const SharedHandle<DHTNode>& remoteNode,
const unsigned char* infoHash,
const std::string& transactionID):
DHTQueryMessage(localNode, remoteNode, transactionID)
{
memcpy(_infoHash, infoHash, DHT_ID_LENGTH);
}
DHTGetPeersMessage::~DHTGetPeersMessage() {}
void DHTGetPeersMessage::doReceivedAction()
{
std::string token = _tokenTracker->generateToken(_infoHash,
_remoteNode->getIPAddress(),
_remoteNode->getPort());
// Check to see localhost has the contents which has same infohash
std::vector<SharedHandle<Peer> > peers;
_peerAnnounceStorage->getPeers(peers, _infoHash);
SharedHandle<DHTMessage> reply;
if(peers.empty()) {
std::vector<SharedHandle<DHTNode> > nodes;
_routingTable->getClosestKNodes(nodes, _infoHash);
reply =
_factory->createGetPeersReplyMessage(_remoteNode, nodes, token,
_transactionID);
} else {
reply =
_factory->createGetPeersReplyMessage(_remoteNode, peers, token,
_transactionID);
}
_dispatcher->addMessageToQueue(reply);
}
BDE DHTGetPeersMessage::getArgument()
{
BDE aDict = BDE::dict();
aDict[DHTMessage::ID] = BDE(_localNode->getID(), DHT_ID_LENGTH);
aDict[INFO_HASH] = BDE(_infoHash, DHT_ID_LENGTH);
return aDict;
}
std::string DHTGetPeersMessage::getMessageType() const
{
return GET_PEERS;
}
void DHTGetPeersMessage::validate() const {}
void DHTGetPeersMessage::setPeerAnnounceStorage(const WeakHandle<DHTPeerAnnounceStorage>& storage)
{
_peerAnnounceStorage = storage;
}
void DHTGetPeersMessage::setTokenTracker(const WeakHandle<DHTTokenTracker>& tokenTracker)
{
_tokenTracker = tokenTracker;
}
std::string DHTGetPeersMessage::toStringOptional() const
{
return "info_hash="+util::toHex(_infoHash, INFO_HASH_LENGTH);
}
} // namespace aria2
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