Updated to final KDE3 ktorrent release (2.2.6)

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/ktorrent@1077377 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 243 insertions, 0 deletions

diff --git a/libktorrent/kademlia/rpcserver.cpp b/libktorrent/kademlia/rpcserver.cpp
new file mode 100644
index 0000000..1242dae
--- /dev/null
+++ b/libktorrent/kademlia/rpcserver.cpp
@@ -0,0 +1,243 @@
+/***************************************************************************
+ *   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 <unistd.h>
+#include <string.h>
+#include <net/portlist.h>
+#include <util/log.h>
+#include <util/error.h>
+#include <torrent/globals.h>
+#include <torrent/bnode.h>
+#include <torrent/bdecoder.h>
+#include <torrent/bencoder.h>
+#include <ksocketdevice.h>
+#include "rpcserver.h"
+#include "rpccall.h"
+#include "rpcmsg.h"
+#include "kbucket.h"
+#include "node.h"
+#include "dht.h"
+
+using namespace KNetwork;
+using namespace bt;
+
+namespace dht
+{
+	
+
+
+	RPCServer::RPCServer(DHT* dh_table,Uint16 port,QObject *parent) : QObject(parent),dh_table(dh_table),next_mtid(0),port(port)
+	{
+		sock = new KDatagramSocket(this);
+		sock->setBlocking(false);
+		sock->setAddressReuseable(true);
+	}
+
+
+	RPCServer::~RPCServer()
+	{
+		bt::Globals::instance().getPortList().removePort(port,net::UDP);
+		sock->close();
+		calls.setAutoDelete(true);
+		calls.clear();
+		call_queue.setAutoDelete(true);
+		call_queue.clear();
+	}
+	
+	void RPCServer::start()
+	{
+		sock->setBlocking(true);
+		if (!sock->bind(QString::null,QString::number(port)))
+		{
+			Out(SYS_DHT|LOG_IMPORTANT) << "DHT: Failed to bind to UDP port " << port << " for DHT" << endl;
+		}
+		else
+		{
+			bt::Globals::instance().getPortList().addNewPort(port,net::UDP,true);
+		}
+		sock->setBlocking(false);
+		connect(sock,SIGNAL(readyRead()),this,SLOT(readPacket()));
+	}
+		
+	void RPCServer::stop()
+	{
+		bt::Globals::instance().getPortList().removePort(port,net::UDP);
+		sock->close();
+	}
+	
+	static void PrintRawData(const QByteArray & data)
+	{
+		QString tmp;
+		for (Uint32 i = 0;i < data.size();i++)
+		{
+			char c = QChar(data[i]).latin1();
+			if (!QChar(data[i]).isPrint() || c == 0)
+				tmp += '#';
+			else
+				tmp += c;
+		}
+		
+		Out(SYS_DHT|LOG_DEBUG) << tmp << endl;
+	}
+
+	void RPCServer::readPacket()
+	{
+		if (sock->bytesAvailable() == 0)
+		{
+			Out(SYS_DHT|LOG_NOTICE) << "0 byte UDP packet " << endl;
+			// KDatagramSocket wrongly handles UDP packets with no payload
+			// so we need to deal with it oursleves
+			int fd = sock->socketDevice()->socket();
+			char tmp;
+			read(fd,&tmp,1);
+			return;
+		}
+		
+		KDatagramPacket pck = sock->receive();
+		/*
+		Out() << "RPCServer::readPacket" << endl;
+		PrintRawData(pck.data());
+		*/
+		BNode* n = 0;
+		try
+		{
+		// read and decode the packet
+			BDecoder bdec(pck.data(),false);	
+			n = bdec.decode();
+			
+			if (!n || n->getType() != BNode::DICT)
+			{
+				delete n;
+				return;
+			}
+			
+			// try to make a RPCMsg of it
+			MsgBase* msg = MakeRPCMsg((BDictNode*)n,this);
+			if (msg)
+			{
+				msg->setOrigin(pck.address());
+				msg->apply(dh_table);
+			// erase an existing call
+				if (msg->getType() == RSP_MSG && calls.contains(msg->getMTID()))
+				{
+				// delete the call, but first notify it off the response
+					RPCCall* c = calls.find(msg->getMTID());
+					c->response(msg);
+					calls.erase(msg->getMTID());
+					c->deleteLater();
+					doQueuedCalls();
+				}
+				delete msg;
+			}
+		}
+		catch (bt::Error & err)
+		{
+			Out(SYS_DHT|LOG_IMPORTANT) << "Error happened during parsing : " << err.toString() << endl;
+		}
+		delete n;
+		
+		if (sock->bytesAvailable() > 0)
+			readPacket();
+	}
+	
+	
+	void RPCServer::send(const KNetwork::KSocketAddress & addr,const QByteArray & msg)
+	{
+		sock->send(KNetwork::KDatagramPacket(msg,addr));
+	}
+	
+	RPCCall* RPCServer::doCall(MsgBase* msg)
+	{
+		Uint8 start = next_mtid;
+		while (calls.contains(next_mtid))
+		{
+			next_mtid++;
+			if (next_mtid == start) // if this happens we cannot do any calls
+			{
+				// so queue the call
+				RPCCall* c = new RPCCall(this,msg,true);
+				call_queue.append(c);
+				Out(SYS_DHT|LOG_NOTICE) << "Queueing RPC call, no slots available at the moment" << endl;
+				return c; 
+			}
+		}
+		
+		msg->setMTID(next_mtid++);
+		sendMsg(msg);
+		RPCCall* c = new RPCCall(this,msg,false);
+		calls.insert(msg->getMTID(),c);
+		return c;
+	}
+	
+	void RPCServer::sendMsg(MsgBase* msg)
+	{
+		QByteArray data;
+		msg->encode(data);
+		send(msg->getDestination(),data);
+		
+	//	PrintRawData(data);
+	}
+	
+	void RPCServer::timedOut(Uint8 mtid)
+	{
+		// delete the call
+		RPCCall* c = calls.find(mtid);
+		if (c)
+		{
+			dh_table->timeout(c->getRequest());
+			calls.erase(mtid);
+			c->deleteLater();
+		}
+		doQueuedCalls();	
+	}
+	
+	void RPCServer::doQueuedCalls()
+	{
+		while (call_queue.count() > 0 && calls.count() < 256)
+		{
+			RPCCall* c = call_queue.first();
+			call_queue.removeFirst();
+			
+			while (calls.contains(next_mtid))
+				next_mtid++;
+			
+			MsgBase* msg = c->getRequest();
+			msg->setMTID(next_mtid++);
+			sendMsg(msg);
+			calls.insert(msg->getMTID(),c);
+			c->start();
+		}
+	}
+	
+	const RPCCall* RPCServer::findCall(Uint8 mtid) const
+	{
+		return calls.find(mtid);
+	}
+	
+	void RPCServer::ping(const dht::Key & our_id,const KNetwork::KSocketAddress & addr)
+	{
+		Out(SYS_DHT|LOG_NOTICE) << "DHT: pinging " << addr.nodeName() << endl;
+		PingReq* pr = new PingReq(our_id);
+		pr->setOrigin(addr);
+		doCall(pr);
+	}
+	
+
+}
+#include "rpcserver.moc"