1 files changed, 381 insertions, 0 deletions
diff --git a/kopete/protocols/msn/incomingtransfer.cpp b/kopete/protocols/msn/incomingtransfer.cpp
new file mode 100644
index 00000000..99422ef7
--- /dev/null
+++ b/kopete/protocols/msn/incomingtransfer.cpp
@@ -0,0 +1,381 @@
+/*
+    incomingtransfer.cpp - msn p2p protocol
+
+    Copyright (c) 2003-2005 by Olivier Goffart        <ogoffart@ kde.org>
+    Copyright (c) 2005      by Gregg Edghill          <gregg.edghill@gmail.com>
+
+    *************************************************************************
+    *                                                                       *
+    * 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.                                   *
+    *                                                                       *
+    *************************************************************************
+*/
+
+#include "incomingtransfer.h"
+using P2P::TransferContext;
+using P2P::IncomingTransfer;
+using P2P::Message;
+
+// Kde includes
+#include <kbufferedsocket.h>
+#include <kdebug.h>
+#include <klocale.h>
+#include <kserversocket.h>
+#include <kstandarddirs.h>
+#include <ktempfile.h>
+using namespace KNetwork;
+
+// Qt includes
+#include <qfile.h>
+#include <qregexp.h>
+
+// Kopete includes
+#include <kopetetransfermanager.h>
+
+IncomingTransfer::IncomingTransfer(const QString& from, P2P::Dispatcher *dispatcher, Q_UINT32 sessionId)
+: TransferContext(from,dispatcher,sessionId)
+{
+	m_direction = P2P::Incoming;
+	m_listener  = 0l;
+}
+
+IncomingTransfer::~IncomingTransfer()
+{
+	kdDebug(14140) << k_funcinfo << endl;
+	if(m_listener)
+	{
+		delete m_listener;
+		m_listener = 0l;
+	}
+
+	if(m_socket)
+	{
+		delete m_socket;
+		m_socket = 0l;
+	}
+}
+
+
+void IncomingTransfer::slotTransferAccepted(Kopete::Transfer* transfer, const QString& /*fileName*/)
+{
+	Q_UINT32 sessionId = transfer->info().internalId().toUInt();
+	if(sessionId!=m_sessionId)
+		return;
+	
+	QObject::connect(transfer , SIGNAL(transferCanceled()), this, SLOT(abort()));
+	m_transfer = transfer;
+		
+	QString content = QString("SessionID: %1\r\n\r\n").arg(sessionId);
+	sendMessage(OK, content);
+	
+	QObject::disconnect(Kopete::TransferManager::transferManager(), 0l, this, 0l);
+}
+
+void IncomingTransfer::slotTransferRefused(const Kopete::FileTransferInfo& info)
+{
+	Q_UINT32 sessionId = info.internalId().toUInt();
+	if(sessionId!=m_sessionId)
+		return;
+	
+	QString content = QString("SessionID: %1\r\n\r\n").arg(sessionId);
+	// Send the sending client a cancelation message.
+	sendMessage(DECLINE, content);
+	m_state=Finished;
+	
+	QObject::disconnect(Kopete::TransferManager::transferManager(), 0l, this, 0l);
+}
+
+
+
+void IncomingTransfer::acknowledged()
+{
+	kdDebug(14140) << k_funcinfo << endl;
+	
+	switch(m_state)
+	{
+		case Invitation:
+				// NOTE UDI: base identifier acknowledge message, ignore.
+				//      UDI: 200 OK message should follow.
+				if(m_type == File)
+				{
+					// FT: 200 OK acknowledged message.
+					// If this is the first connection between the two clients, a direct connection invitation
+					// should follow. Otherwise, the file transfer may start right away.
+					if(m_transfer)
+					{
+						QFile *destination = new QFile(m_transfer->destinationURL().path());
+						if(!destination->open(IO_WriteOnly))
+						{
+							m_transfer->slotError(KIO::ERR_CANNOT_OPEN_FOR_WRITING, i18n("Cannot open file for writing"));
+							m_transfer = 0l;
+							
+							error();
+							return;
+						}
+						m_file = destination;
+					}
+					m_state = Negotiation;
+				}
+			break;
+
+		case Negotiation:
+				// 200 OK acknowledge message.
+			break;
+
+		case DataTransfer:
+			break;
+			
+		case Finished:
+			// UDI: Bye acknowledge message.
+			m_dispatcher->detach(this);
+			break;
+	}
+}
+
+void IncomingTransfer::processMessage(const Message& message)
+{
+	if(m_file && (message.header.flag == 0x20 || message.header.flag == 0x01000030))
+	{
+		// UserDisplayIcon data or File data is in this message.
+		// Write the recieved data to the file.
+		kdDebug(14140) << k_funcinfo << QString("Received, %1 bytes").arg(message.header.dataSize) << endl;
+		
+		m_file->writeBlock(message.body.data(), message.header.dataSize);
+		if(m_transfer){
+			m_transfer->slotProcessed(message.header.dataOffset + message.header.dataSize);
+		}
+		
+		if((message.header.dataOffset + message.header.dataSize) == message.header.totalDataSize)
+		{
+			// Transfer is complete.
+			if(m_type == UserDisplayIcon){
+				m_tempFile->close();
+				m_dispatcher->displayIconReceived(m_tempFile, m_object);
+				m_tempFile = 0l;
+				m_file = 0l;
+			}
+			else
+			{
+				m_file->close();
+			}
+
+			m_isComplete = true;
+			// Send data acknowledge message.
+			acknowledge(message);
+
+			if(m_type == UserDisplayIcon)
+			{
+				m_state = Finished;
+				// Send BYE message.
+				sendMessage(BYE, "\r\n");
+			}
+		}
+	}
+	else if(message.header.dataSize == 4 && message.applicationIdentifier == 1)
+	{
+		// Data preparation message.
+		m_tempFile = new KTempFile(locateLocal("tmp", "msnpicture--"), ".png");
+		m_tempFile->setAutoDelete(true);
+		m_file = m_tempFile->file();
+		m_state = DataTransfer;
+		// Send data preparation acknowledge message.
+		acknowledge(message);
+	}
+	else
+	{
+		QString body =
+			QCString(message.body.data(), message.header.dataSize);
+//		kdDebug(14140) << k_funcinfo << "received, " << body << endl;
+
+		if(body.startsWith("INVITE"))
+		{
+			// Retrieve some MSNSLP headers used when
+			// replying to this INVITE message.
+			QRegExp regex(";branch=\\{([0-9A-F\\-]*)\\}\r\n");
+			regex.search(body);
+			m_branch = regex.cap(1);
+			// NOTE Call-ID never changes.
+			regex = QRegExp("Call-ID: \\{([0-9A-F\\-]*)\\}\r\n");
+			regex.search(body);
+			m_callId = regex.cap(1);
+			regex = QRegExp("Bridges: ([^\r\n]*)\r\n");
+			regex.search(body);
+			QString bridges = regex.cap(1);
+			// The NetID field is 0 if the Conn-Type is
+			// Direct-Connect or Firewall, otherwise, it is
+			// a randomly generated number.
+			regex = QRegExp("NetID: (\\-?\\d+)\r\n");
+			regex.search(body);
+			QString netId = regex.cap(1);
+			kdDebug(14140) << "net id, " << netId << endl;
+			// Connection Types
+			// - Direct-Connect
+			// - Port-Restrict-NAT
+			// - IP-Restrict-NAT
+			// - Symmetric-NAT
+			// - Firewall
+			regex = QRegExp("Conn-Type: ([^\r\n]+)\r\n");
+			regex.search(body);
+			QString connType = regex.cap(1);
+
+			bool wouldListen = false;
+			if(netId.toUInt() == 0 && connType == "Direct-Connect"){
+				wouldListen = true;
+
+			}
+			else if(connType == "IP-Restrict-NAT"){
+				wouldListen = true;
+			}
+#if 1
+			wouldListen = false; // TODO Direct connection support
+#endif			
+			QString content;
+			
+			if(wouldListen)
+			{
+				// Create a listening socket for direct file transfer.
+				m_listener = new KServerSocket("", "");
+				m_listener->setResolutionEnabled(true);
+				// Create the callback that will try to accept incoming connections.
+				QObject::connect(m_listener, SIGNAL(readyAccept()), SLOT(slotAccept()));
+				QObject::connect(m_listener, SIGNAL(gotError(int)), this, SLOT(slotListenError(int)));
+				// Listen for incoming connections.
+				bool isListening = m_listener->listen(1);
+				kdDebug(14140) << k_funcinfo << (isListening ? "listening" : "not listening") << endl;
+				kdDebug(14140) << k_funcinfo
+					<< "local endpoint, " << m_listener->localAddress().nodeName()
+					<< endl;
+				
+				content = "Bridge: TCPv1\r\n"
+					"Listening: true\r\n" +
+					QString("Hashed-Nonce: {%1}\r\n").arg(P2P::Uid::createUid()) +
+					QString("IPv4Internal-Addrs: %1\r\n").arg(m_listener->localAddress().nodeName())   +
+					QString("IPv4Internal-Port: %1\r\n").arg(m_listener->localAddress().serviceName()) +
+					"\r\n";
+			}
+			else
+			{
+				content =
+					"Bridge: TCPv1\r\n"
+					"Listening: false\r\n"
+					"Hashed-Nonce: {00000000-0000-0000-0000-000000000000}\r\n"
+					"\r\n";
+			}
+			
+			m_state = DataTransfer;
+			
+			if (m_type != File)
+			{
+				// NOTE For file transfers, the connection invite *must not* be acknowledged in any way
+				//      as this trips MSN 7.5
+				
+				acknowledge(message);
+				// Send 200 OK message to the sending client.
+				sendMessage(OK, content);
+			}
+		}
+		else if(body.startsWith("BYE"))
+		{
+			m_state = Finished;
+			// Send the sending client an acknowledge message.
+			acknowledge(message);
+
+			if(m_file && m_transfer)
+			{
+				if(m_isComplete){
+					// The transfer is complete.
+					m_transfer->slotComplete();
+				}
+				else
+				{
+					// The transfer has been canceled remotely.
+					if(m_transfer){
+						// Inform the user of the file transfer cancelation.
+						m_transfer->slotError(KIO::ERR_ABORTED, i18n("File transfer canceled."));
+					}
+					// Remove the partially received file.
+					m_file->remove();
+				}
+			}
+
+			// Dispose of this transfer context.
+			m_dispatcher->detach(this);
+		}
+		else if(body.startsWith("MSNSLP/1.0 200 OK"))
+		{
+			if(m_type == UserDisplayIcon){
+				m_state = Negotiation;
+				// Acknowledge the 200 OK message.
+				acknowledge(message);
+			}
+		}
+	}
+}
+
+void IncomingTransfer::slotListenError(int /*errorCode*/)
+{
+	kdDebug(14140) << k_funcinfo << m_listener->errorString() << endl;
+}
+
+void IncomingTransfer::slotAccept()
+{
+	// Try to accept an incoming connection from the sending client.
+	m_socket = static_cast<KBufferedSocket*>(m_listener->accept());
+	if(!m_socket)
+	{
+		// NOTE If direct connection fails, the sending
+		// client wil transfer the file data through the
+		// existing session.
+		kdDebug(14140) << k_funcinfo << "Direct connection failed." << endl;
+		// Close the listening endpoint.
+		m_listener->close();
+		return;
+	}
+
+	kdDebug(14140) << k_funcinfo << "Direct connection established." << endl;
+
+	// Set the socket to non blocking,
+	// enable the ready read signal and disable
+	// ready write signal.
+	// NOTE readyWrite consumes too much cpu usage.
+	m_socket->setBlocking(false);
+	m_socket->enableRead(true);
+	m_socket->enableWrite(false);
+
+	// Create the callback that will try to read bytes from the accepted socket.
+	QObject::connect(m_socket, SIGNAL(readyRead()),   this, SLOT(slotSocketRead()));
+	// Create the callback that will try to handle the socket close event.
+	QObject::connect(m_socket, SIGNAL(closed()),      this, SLOT(slotSocketClosed()));
+	// Create the callback that will try to handle the socket error event.
+	QObject::connect(m_socket, SIGNAL(gotError(int)), this, SLOT(slotSocketError(int)));
+}
+
+void IncomingTransfer::slotSocketRead()
+{
+	int available = m_socket->bytesAvailable();
+	kdDebug(14140) << k_funcinfo << available << ", bytes available." << endl;
+	if(available > 0)
+	{
+		QByteArray buffer(available);
+		m_socket->readBlock(buffer.data(), buffer.size());
+
+		if(QString(buffer) == "foo"){
+			kdDebug(14140) << "Connection Check." << endl;
+		}
+	}
+}
+
+void IncomingTransfer::slotSocketClosed()
+{
+	kdDebug(14140) << k_funcinfo << endl;
+}
+
+void IncomingTransfer::slotSocketError(int errorCode)
+{
+	kdDebug(14140) << k_funcinfo << errorCode << endl;
+}
+
+#include "incomingtransfer.moc"